#include "actions.h"
#include "datapath.h"
-#include "openvswitch/datapath-protocol.h"
+#include "openvswitch/xflow.h"
#include "vport.h"
- static struct sk_buff *
- make_writable(struct sk_buff *skb, unsigned min_headroom, gfp_t gfp)
+ static struct sk_buff *make_writable(struct sk_buff *skb, unsigned min_headroom, gfp_t gfp)
{
if (skb_shared(skb) || skb_cloned(skb)) {
struct sk_buff *nskb;
return skb;
}
-
- static struct sk_buff *
- modify_vlan_tci(struct datapath *dp, struct sk_buff *skb,
- struct xflow_key *key, const union xflow_action *a,
- int n_actions, gfp_t gfp)
+ static struct sk_buff *modify_vlan_tci(struct datapath *dp, struct sk_buff *skb,
- const struct odp_flow_key *key,
- const union odp_action *a, int n_actions,
- gfp_t gfp)
++ struct xflow_key *key, const union xflow_action *a,
++ int n_actions, gfp_t gfp)
{
- u16 tci, mask;
-
- if (a->type == ODPAT_SET_VLAN_VID) {
- tci = ntohs(a->vlan_vid.vlan_vid);
- mask = VLAN_VID_MASK;
- } else {
- tci = a->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT;
- mask = VLAN_PCP_MASK;
- }
+ __be16 mask = a->dl_tci.mask;
+ __be16 tci = a->dl_tci.tci;
- key->dl_tci = (key->dl_tci & ~(mask | VLAN_TAG_PRESENT)) | tci;
-
skb = make_writable(skb, VLAN_HLEN, gfp);
if (!skb)
return ERR_PTR(-ENOMEM);
/* GSO can change the checksum type so update.*/
compute_ip_summed(segs, true);
- segs = __vlan_put_tag(segs, tci);
+ segs = __vlan_put_tag(segs, ntohs(tci));
err = -ENOMEM;
if (segs) {
- struct xflow_key segkey = *key;
err = execute_actions(dp, segs,
- &segkey, a + 1,
+ key, a + 1,
n_actions - 1,
gfp);
}
}
static struct sk_buff *set_dl_addr(struct sk_buff *skb,
- struct xflow_key *key,
- const struct odp_action_dl_addr *a,
+ const struct xflow_action_dl_addr *a,
gfp_t gfp)
{
skb = make_writable(skb, 0, gfp);
if (skb) {
struct ethhdr *eh = eth_hdr(skb);
- if (a->type == XFLOWAT_SET_DL_SRC) {
- if (a->type == ODPAT_SET_DL_SRC)
++ if (a->type == XFLOWAT_SET_DL_SRC)
memcpy(eh->h_source, a->dl_addr, ETH_ALEN);
- memcpy(key->dl_src, a->dl_addr, ETH_ALEN);
- } else {
+ else
memcpy(eh->h_dest, a->dl_addr, ETH_ALEN);
- memcpy(key->dl_dst, a->dl_addr, ETH_ALEN);
- }
}
return skb;
}
}
static struct sk_buff *set_nw_addr(struct sk_buff *skb,
- struct xflow_key *key,
- const struct odp_flow_key *key,
- const struct odp_action_nw_addr *a,
++ const struct xflow_key *key,
+ const struct xflow_action_nw_addr *a,
gfp_t gfp)
{
if (key->dl_type != htons(ETH_P_IP))
}
static struct sk_buff *set_nw_tos(struct sk_buff *skb,
- struct xflow_key *key,
- const struct odp_flow_key *key,
- const struct odp_action_nw_tos *a,
++ const struct xflow_key *key,
+ const struct xflow_action_nw_tos *a,
gfp_t gfp)
{
if (key->dl_type != htons(ETH_P_IP))
return skb;
}
- static struct sk_buff *
- set_tp_port(struct sk_buff *skb, struct xflow_key *key,
- const struct xflow_action_tp_port *a,
- gfp_t gfp)
+ static struct sk_buff *set_tp_port(struct sk_buff *skb,
- const struct odp_flow_key *key,
- const struct odp_action_tp_port *a, gfp_t gfp)
++ const struct xflow_key *key,
++ const struct xflow_action_tp_port *a,
++ gfp_t gfp)
{
int check_ofs;
/* Execute a list of actions against 'skb'. */
int execute_actions(struct datapath *dp, struct sk_buff *skb,
- struct xflow_key *key,
- const struct odp_flow_key *key,
- const union odp_action *a, int n_actions,
++ const struct xflow_key *key,
+ const union xflow_action *a, int n_actions,
gfp_t gfp)
{
/* Every output action needs a separate clone of 'skb', but the common
}
break;
- case ODPAT_SET_TUNNEL:
+ case XFLOWAT_SET_TUNNEL:
- set_tunnel(skb, key, a->tunnel.tun_id);
+ OVS_CB(skb)->tun_id = a->tunnel.tun_id;
break;
- case ODPAT_SET_VLAN_VID:
- case ODPAT_SET_VLAN_PCP:
+ case XFLOWAT_SET_DL_TCI:
skb = modify_vlan_tci(dp, skb, key, a, n_actions, gfp);
if (IS_ERR(skb))
return PTR_ERR(skb);
break;
- case ODPAT_STRIP_VLAN:
+ case XFLOWAT_STRIP_VLAN:
- skb = strip_vlan(skb, key, gfp);
+ skb = strip_vlan(skb, gfp);
break;
- case ODPAT_SET_DL_SRC:
- case ODPAT_SET_DL_DST:
+ case XFLOWAT_SET_DL_SRC:
+ case XFLOWAT_SET_DL_DST:
- skb = set_dl_addr(skb, key, &a->dl_addr, gfp);
+ skb = set_dl_addr(skb, &a->dl_addr, gfp);
break;
- case ODPAT_SET_NW_SRC:
- case ODPAT_SET_NW_DST:
+ case XFLOWAT_SET_NW_SRC:
+ case XFLOWAT_SET_NW_DST:
skb = set_nw_addr(skb, key, &a->nw_addr, gfp);
break;
struct datapath;
struct sk_buff;
-struct odp_flow_key;
-union odp_action;
+struct xflow_key;
+union xflow_action;
int execute_actions(struct datapath *dp, struct sk_buff *skb,
- struct xflow_key *key,
- const struct odp_flow_key *key,
- const union odp_action *, int n_actions,
++ const struct xflow_key *key,
+ const union xflow_action *, int n_actions,
gfp_t gfp);
- static inline void
- set_skb_csum_bits(const struct sk_buff *old_skb, struct sk_buff *new_skb)
+ static inline void set_skb_csum_bits(const struct sk_buff *old_skb,
+ struct sk_buff *new_skb)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
/* Before 2.6.24 these fields were not copied when
}
}
- static int
- put_port(const struct dp_port *p, struct xflow_port __user *uop)
-static int put_port(const struct dp_port *p, struct odp_port __user *uop)
++static int put_port(const struct dp_port *p, struct xflow_port __user *uop)
{
- struct odp_port op;
+ struct xflow_port op;
memset(&op, 0, sizeof op);
return copy_to_user(uop, &op, sizeof op) ? -EFAULT : 0;
}
- static int
- query_port(struct datapath *dp, struct xflow_port __user *uport)
-static int query_port(struct datapath *dp, struct odp_port __user *uport)
++static int query_port(struct datapath *dp, struct xflow_port __user *uport)
{
- struct odp_port port;
+ struct xflow_port port;
if (copy_from_user(&port, uport, sizeof port))
return -EFAULT;
return put_port(dp->ports[port.port], uport);
}
- static int
- do_list_ports(struct datapath *dp, struct xflow_port __user *uports, int n_ports)
-static int do_list_ports(struct datapath *dp, struct odp_port __user *uports,
++static int do_list_ports(struct datapath *dp, struct xflow_port __user *uports,
+ int n_ports)
{
int idx = 0;
if (n_ports) {
return idx;
}
- static int
- list_ports(struct datapath *dp, struct xflow_portvec __user *upv)
-static int list_ports(struct datapath *dp, struct odp_portvec __user *upv)
++static int list_ports(struct datapath *dp, struct xflow_portvec __user *upv)
{
- struct odp_portvec pv;
+ struct xflow_portvec pv;
int retval;
if (copy_from_user(&pv, upv, sizeof pv))
return error;
}
- static int
- set_port_group(struct datapath *dp, const struct xflow_port_group __user *upg)
+ static int set_port_group(struct datapath *dp,
- const struct odp_port_group __user *upg)
++ const struct xflow_port_group __user *upg)
{
- struct odp_port_group pg;
+ struct xflow_port_group pg;
if (copy_from_user(&pg, upg, sizeof pg))
return -EFAULT;
return &netdev_vport->dev->NETDEV_DEV_MEMBER.kobj;
}
- int
- netdev_get_stats(const struct vport *vport, struct xflow_vport_stats *stats)
-int netdev_get_stats(const struct vport *vport, struct odp_vport_stats *stats)
++int netdev_get_stats(const struct vport *vport, struct xflow_vport_stats *stats)
{
const struct netdev_vport *netdev_vport = netdev_vport_priv(vport);
const struct net_device_stats *netdev_stats;
kfree(dev_table);
}
- static int
- do_vport_add(struct xflow_vport_add *vport_config)
-static int do_vport_add(struct odp_vport_add *vport_config)
++static int do_vport_add(struct xflow_vport_add *vport_config)
{
struct vport *vport;
int err = 0;
* on device type). This function is for userspace callers and assumes no
* locks are held.
*/
- int
- vport_user_add(const struct xflow_vport_add __user *uvport_config)
-int vport_user_add(const struct odp_vport_add __user *uvport_config)
++int vport_user_add(const struct xflow_vport_add __user *uvport_config)
{
- struct odp_vport_add vport_config;
+ struct xflow_vport_add vport_config;
- if (copy_from_user(&vport_config, uvport_config, sizeof(struct odp_vport_add)))
+ if (copy_from_user(&vport_config, uvport_config, sizeof(struct xflow_vport_add)))
return -EFAULT;
return do_vport_add(&vport_config);
}
#ifdef CONFIG_COMPAT
- int
- compat_vport_user_add(struct compat_xflow_vport_add *ucompat)
-int compat_vport_user_add(struct compat_odp_vport_add *ucompat)
++int compat_vport_user_add(struct compat_xflow_vport_add *ucompat)
{
- struct compat_odp_vport_add compat;
- struct odp_vport_add vport_config;
+ struct compat_xflow_vport_add compat;
+ struct xflow_vport_add vport_config;
- if (copy_from_user(&compat, ucompat, sizeof(struct compat_odp_vport_add)))
+ if (copy_from_user(&compat, ucompat, sizeof(struct compat_xflow_vport_add)))
return -EFAULT;
memcpy(vport_config.port_type, compat.port_type, VPORT_TYPE_SIZE);
}
#endif
- static int
- do_vport_mod(struct xflow_vport_mod *vport_config)
-static int do_vport_mod(struct odp_vport_mod *vport_config)
++static int do_vport_mod(struct xflow_vport_mod *vport_config)
{
struct vport *vport;
int err;
* dependent on device type). This function is for userspace callers and
* assumes no locks are held.
*/
- int
- vport_user_mod(const struct xflow_vport_mod __user *uvport_config)
-int vport_user_mod(const struct odp_vport_mod __user *uvport_config)
++int vport_user_mod(const struct xflow_vport_mod __user *uvport_config)
{
- struct odp_vport_mod vport_config;
+ struct xflow_vport_mod vport_config;
- if (copy_from_user(&vport_config, uvport_config, sizeof(struct odp_vport_mod)))
+ if (copy_from_user(&vport_config, uvport_config, sizeof(struct xflow_vport_mod)))
return -EFAULT;
return do_vport_mod(&vport_config);
}
#ifdef CONFIG_COMPAT
- int
- compat_vport_user_mod(struct compat_xflow_vport_mod *ucompat)
-int compat_vport_user_mod(struct compat_odp_vport_mod *ucompat)
++int compat_vport_user_mod(struct compat_xflow_vport_mod *ucompat)
{
- struct compat_odp_vport_mod compat;
- struct odp_vport_mod vport_config;
+ struct compat_xflow_vport_mod compat;
+ struct xflow_vport_mod vport_config;
- if (copy_from_user(&compat, ucompat, sizeof(struct compat_odp_vport_mod)))
+ if (copy_from_user(&compat, ucompat, sizeof(struct compat_xflow_vport_mod)))
return -EFAULT;
memcpy(vport_config.devname, compat.devname, IFNAMSIZ);
* Retrieves transmit, receive, and error stats for the given device. This
* function is for userspace callers and assumes no locks are held.
*/
- int
- vport_user_stats_get(struct xflow_vport_stats_req __user *ustats_req)
-int vport_user_stats_get(struct odp_vport_stats_req __user *ustats_req)
++int vport_user_stats_get(struct xflow_vport_stats_req __user *ustats_req)
{
- struct odp_vport_stats_req stats_req;
+ struct xflow_vport_stats_req stats_req;
struct vport *vport;
int err;
* -EOPNOTSUPP. This function is for userspace callers and assumes no locks
* are held.
*/
- int
- vport_user_stats_set(struct xflow_vport_stats_req __user *ustats_req)
-int vport_user_stats_set(struct odp_vport_stats_req __user *ustats_req)
++int vport_user_stats_set(struct xflow_vport_stats_req __user *ustats_req)
{
- struct odp_vport_stats_req stats_req;
+ struct xflow_vport_stats_req stats_req;
struct vport *vport;
int err;
* Retrieves the Ethernet address of the given device. This function is for
* userspace callers and assumes no locks are held.
*/
- int
- vport_user_ether_get(struct xflow_vport_ether __user *uvport_ether)
-int vport_user_ether_get(struct odp_vport_ether __user *uvport_ether)
++int vport_user_ether_get(struct xflow_vport_ether __user *uvport_ether)
{
- struct odp_vport_ether vport_ether;
+ struct xflow_vport_ether vport_ether;
struct vport *vport;
int err = 0;
* -EOPNOTSUPP. This function is for userspace callers and assumes no locks
* are held.
*/
- int
- vport_user_ether_set(struct xflow_vport_ether __user *uvport_ether)
-int vport_user_ether_set(struct odp_vport_ether __user *uvport_ether)
++int vport_user_ether_set(struct xflow_vport_ether __user *uvport_ether)
{
- struct odp_vport_ether vport_ether;
+ struct xflow_vport_ether vport_ether;
struct vport *vport;
int err;
* Retrieves the MTU of the given device. This function is for userspace
* callers and assumes no locks are held.
*/
- int
- vport_user_mtu_get(struct xflow_vport_mtu __user *uvport_mtu)
-int vport_user_mtu_get(struct odp_vport_mtu __user *uvport_mtu)
++int vport_user_mtu_get(struct xflow_vport_mtu __user *uvport_mtu)
{
- struct odp_vport_mtu vport_mtu;
+ struct xflow_vport_mtu vport_mtu;
struct vport *vport;
int err = 0;
* MTU, in which case the result will always be -EOPNOTSUPP. This function is
* for userspace callers and assumes no locks are held.
*/
- int
- vport_user_mtu_set(struct xflow_vport_mtu __user *uvport_mtu)
-int vport_user_mtu_set(struct odp_vport_mtu __user *uvport_mtu)
++int vport_user_mtu_set(struct xflow_vport_mtu __user *uvport_mtu)
{
- struct odp_vport_mtu vport_mtu;
+ struct xflow_vport_mtu vport_mtu;
struct vport *vport;
int err;
* support setting the stats, in which case the result will always be
* -EOPNOTSUPP. RTNL lock must be held.
*/
- int
- vport_set_stats(struct vport *vport, struct xflow_vport_stats *stats)
-int vport_set_stats(struct vport *vport, struct odp_vport_stats *stats)
++int vport_set_stats(struct vport *vport, struct xflow_vport_stats *stats)
{
ASSERT_RTNL();
*
* Retrieves transmit, receive, and error stats for the given device.
*/
- int
- vport_get_stats(struct vport *vport, struct xflow_vport_stats *stats)
-int vport_get_stats(struct vport *vport, struct odp_vport_stats *stats)
++int vport_get_stats(struct vport *vport, struct xflow_vport_stats *stats)
{
- struct odp_vport_stats dev_stats;
- struct odp_vport_stats *dev_statsp = NULL;
+ struct xflow_vport_stats dev_stats;
+ struct xflow_vport_stats *dev_statsp = NULL;
int err;
if (vport->ops->get_stats) {
#include "hash.h"
#include "ofpbuf.h"
#include "openflow/openflow.h"
-#include "openvswitch/datapath-protocol.h"
+#include "openvswitch/xflow.h"
#include "packets.h"
#include "unaligned.h"
+ #include "vlog.h"
#include "xtoxll.h"
- #include "vlog.h"
- #define THIS_MODULE VLM_flow
+ VLOG_DEFINE_THIS_MODULE(flow)
static struct arp_eth_header *
pull_arp(struct ofpbuf *packet)
#include "netdev-provider.h"
#include "netdev-vport.h"
#include "openflow/openflow.h"
-#include "openvswitch/datapath-protocol.h"
#include "openvswitch/gre.h"
+#include "openvswitch/xflow.h"
#include "packets.h"
#include "socket-util.h"
-
- #define THIS_MODULE VLM_netdev_gre
#include "vlog.h"
+ VLOG_DEFINE_THIS_MODULE(netdev_gre)
+
struct netdev_dev_gre {
struct netdev_dev netdev_dev;
};
return err;
}
- err = netdev_vport_do_ioctl(XFLOW_VPORT_ADD, &ova);
- if (err == EEXIST) {
- err = netdev_vport_do_ioctl(ODP_VPORT_ADD, &ova);
++ err = netdev_vpor_do_ioctl(XFLOW_VPORT_ADD, &ova);
+ if (err == EBUSY) {
VLOG_WARN("%s: destroying existing device", name);
- err = netdev_vport_do_ioctl(ODP_VPORT_DEL, ova.devname);
+ err = netdev_vport_do_ioctl(XFLOW_VPORT_DEL, ova.devname);
if (err) {
return err;
}
#include "netdev-provider.h"
#include "netdev-vport.h"
#include "openflow/openflow.h"
-#include "openvswitch/datapath-protocol.h"
+#include "openvswitch/xflow.h"
#include "packets.h"
#include "socket-util.h"
-
- #define THIS_MODULE VLM_netdev_patch
#include "vlog.h"
+ VLOG_DEFINE_THIS_MODULE(netdev_patch)
+
struct netdev_dev_patch {
struct netdev_dev netdev_dev;
};
ovs_strlcpy(ova.devname, name, sizeof ova.devname);
ova.config = (char *)peer;
- err = netdev_vport_do_ioctl(ODP_VPORT_ADD, &ova);
+ err = netdev_vport_do_ioctl(XFLOW_VPORT_ADD, &ova);
- if (err == EEXIST) {
+ if (err == EBUSY) {
VLOG_WARN("%s: destroying existing device", name);
- err = netdev_vport_do_ioctl(ODP_VPORT_DEL, ova.devname);
+ err = netdev_vport_do_ioctl(XFLOW_VPORT_DEL, ova.devname);
if (err) {
return err;
}
#include "list.h"
#include "netdev-vport.h"
-#include "openvswitch/datapath-protocol.h"
+#include "openvswitch/xflow.h"
#include "shash.h"
#include "socket-util.h"
-
- #define THIS_MODULE VLM_netdev_vport
#include "vlog.h"
+ VLOG_DEFINE_THIS_MODULE(netdev_vport)
+
struct netdev_vport_notifier {
struct netdev_notifier notifier;
struct list list_node;
m->wildcards = htonl(wc);
}
+/* Converts all of the fields in 'opp' from host to native byte-order. */
+void
+hton_ofp_phy_port(struct ofp_phy_port *opp)
+{
+ opp->port_no = htons(opp->port_no);
+ opp->config = htonl(opp->config);
+ opp->state = htonl(opp->state);
+ opp->curr = htonl(opp->curr);
+ opp->advertised = htonl(opp->advertised);
+ opp->supported = htonl(opp->supported);
+ opp->peer = htonl(opp->peer);
+}
+
+/* Converts all of the fields in 'opp' from native to host byte-order. */
+void
+ntoh_ofp_phy_port(struct ofp_phy_port *opp)
+{
+ /* ntohX and htonX are really the same functions. */
+ hton_ofp_phy_port(opp);
+}
++
+ /* Returns a string that describes 'match' in a very literal way, without
+ * interpreting its contents except in a very basic fashion. The returned
+ * string is intended to be fixed-length, so that it is easy to see differences
+ * between two such strings if one is put above another. This is useful for
+ * describing changes made by normalize_match().
+ *
+ * The caller must free the returned string (with free()). */
+ char *
+ ofp_match_to_literal_string(const struct ofp_match *match)
+ {
+ return xasprintf("wildcards=%#10"PRIx32" "
+ " in_port=%5"PRId16" "
+ " dl_src="ETH_ADDR_FMT" "
+ " dl_dst="ETH_ADDR_FMT" "
+ " dl_vlan=%5"PRId16" "
+ " dl_vlan_pcp=%3"PRId8" "
+ " dl_type=%#6"PRIx16" "
+ " nw_tos=%#4"PRIx8" "
+ " nw_proto=%#4"PRIx16" "
+ " nw_src=%#10"PRIx32" "
+ " nw_dst=%#10"PRIx32" "
+ " tp_src=%5"PRId16" "
+ " tp_dst=%5"PRId16,
+ ntohl(match->wildcards),
+ ntohs(match->in_port),
+ ETH_ADDR_ARGS(match->dl_src),
+ ETH_ADDR_ARGS(match->dl_dst),
+ ntohs(match->dl_vlan),
+ match->dl_vlan_pcp,
+ ntohs(match->dl_type),
+ match->nw_tos,
+ match->nw_proto,
+ ntohl(match->nw_src),
+ ntohl(match->nw_dst),
+ ntohs(match->tp_src),
+ ntohs(match->tp_dst));
+ }
bool action_outputs_to_port(const union ofp_action *, uint16_t port);
void normalize_match(struct ofp_match *);
+ char *ofp_match_to_literal_string(const struct ofp_match *match);
+void hton_ofp_phy_port(struct ofp_phy_port *);
+void ntoh_ofp_phy_port(struct ofp_phy_port *);
+\f
+/* OpenFlow errors.
+ *
+ * OpenFlow errors have two 16-bit parts: a "type" and a "code". A "type" has
+ * a unique meaning. The "code" values are different for each "type".
+ *
+ * We embed OpenFlow errors in the same space as errno values by shifting
+ * 'type' left 16 bits and adding the 'code'. An "int" value is thus broken
+ * into a few different ranges:
+ *
+ * - 0: success.
+ *
+ * - 1...65535: system errno values.
+ *
+ * The assumption that system errno values are less than 65536 is true
+ * on at least Linux, FreeBSD, OpenBSD, and Windows. RFC 1813 defines
+ * NFSv3-specific errno codes starting at 10000, another hint that this
+ * is a reasonable assumption.
+ *
+ * C and POSIX say that errno values are positive.
+ *
+ * - 65536...INT_MAX: OpenFlow errors.
+ *
+ * In OpenFlow, a "type" of 0 is valid, but it corresponds to
+ * OFPET_HELLO_FAILED. That's not a general-purpose error: only the
+ * vconn library would ever care to send it. So we ignore it.
+ *
+ * - negative values: not used.
+ */
+
+/* Returns the OpenFlow error with the specified 'type' and 'code' as an
+ * integer. */
static inline int
ofp_mkerr(uint16_t type, uint16_t code)
{
#include "shash.h"
#include "svec.h"
#include "util.h"
+ #include "vlog.h"
+#include "xfif-provider.h"
- #include "vlog.h"
- #define THIS_MODULE VLM_xfif_linux
-VLOG_DEFINE_THIS_MODULE(dpif_linux)
++VLOG_DEFINE_THIS_MODULE(xfif_linux)
/* Datapath interface for the openvswitch Linux kernel module. */
-struct dpif_linux {
- struct dpif dpif;
+struct xfif_linux {
+ struct xfif xfif;
int fd;
- /* Used by dpif_linux_get_all_names(). */
+ /* Used by xfif_linux_get_all_names(). */
char *local_ifname;
int minor;
}
static int
-dpif_linux_set_sflow_probability(struct dpif *dpif_, uint32_t probability)
+xfif_linux_set_sflow_probability(struct xfif *xfif_, uint32_t probability)
{
- return do_ioctl(dpif_, ODP_SET_SFLOW_PROBABILITY, &probability);
+ return do_ioctl(xfif_, XFLOW_SET_SFLOW_PROBABILITY, &probability);
}
-dpif_linux_queue_to_priority(const struct dpif *dpif OVS_UNUSED,
+ static int
++xfif_linux_queue_to_priority(const struct xfif *xfif OVS_UNUSED,
+ uint32_t queue_id, uint32_t *priority)
+ {
+ if (queue_id < 0xf000) {
+ *priority = TC_H_MAKE(1 << 16, queue_id + 1);
+ return 0;
+ } else {
+ return EINVAL;
+ }
+ }
+
static int
-dpif_linux_recv(struct dpif *dpif_, struct ofpbuf **bufp)
+xfif_linux_recv(struct xfif *xfif_, struct ofpbuf **bufp)
{
- struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+ struct xfif_linux *xfif = xfif_linux_cast(xfif_);
struct ofpbuf *buf;
int retval;
int error;
"system",
NULL,
NULL,
- dpif_linux_enumerate,
- dpif_linux_open,
- dpif_linux_close,
- dpif_linux_get_all_names,
- dpif_linux_destroy,
- dpif_linux_get_stats,
- dpif_linux_get_drop_frags,
- dpif_linux_set_drop_frags,
- dpif_linux_port_add,
- dpif_linux_port_del,
- dpif_linux_port_query_by_number,
- dpif_linux_port_query_by_name,
- dpif_linux_port_list,
- dpif_linux_port_poll,
- dpif_linux_port_poll_wait,
- dpif_linux_port_group_get,
- dpif_linux_port_group_set,
- dpif_linux_flow_get,
- dpif_linux_flow_put,
- dpif_linux_flow_del,
- dpif_linux_flow_flush,
- dpif_linux_flow_list,
- dpif_linux_execute,
- dpif_linux_recv_get_mask,
- dpif_linux_recv_set_mask,
- dpif_linux_get_sflow_probability,
- dpif_linux_set_sflow_probability,
- dpif_linux_queue_to_priority,
- dpif_linux_recv,
- dpif_linux_recv_wait,
+ xfif_linux_enumerate,
+ xfif_linux_open,
+ xfif_linux_close,
+ xfif_linux_get_all_names,
+ xfif_linux_destroy,
+ xfif_linux_get_stats,
+ xfif_linux_get_drop_frags,
+ xfif_linux_set_drop_frags,
+ xfif_linux_port_add,
+ xfif_linux_port_del,
+ xfif_linux_port_query_by_number,
+ xfif_linux_port_query_by_name,
+ xfif_linux_port_list,
+ xfif_linux_port_poll,
+ xfif_linux_port_poll_wait,
+ xfif_linux_port_group_get,
+ xfif_linux_port_group_set,
+ xfif_linux_flow_get,
+ xfif_linux_flow_put,
+ xfif_linux_flow_del,
+ xfif_linux_flow_flush,
+ xfif_linux_flow_list,
+ xfif_linux_execute,
+ xfif_linux_recv_get_mask,
+ xfif_linux_recv_set_mask,
+ xfif_linux_get_sflow_probability,
+ xfif_linux_set_sflow_probability,
++ xfif_linux_queue_to_priority,
+ xfif_linux_recv,
+ xfif_linux_recv_wait,
};
\f
static int get_openvswitch_major(void);
--- /dev/null
- #include "vlog.h"
- #define THIS_MODULE VLM_xfif_netdev
+/*
+ * Copyright (c) 2009, 2010 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <config.h>
+#include "xfif.h"
+
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "csum.h"
+#include "flow.h"
+#include "hmap.h"
+#include "list.h"
+#include "netdev.h"
+#include "xflow-util.h"
+#include "ofp-print.h"
+#include "ofpbuf.h"
+#include "packets.h"
+#include "poll-loop.h"
+#include "queue.h"
+#include "timeval.h"
+#include "util.h"
++#include "vlog.h"
+#include "xfif-provider.h"
+
- xf_netdev_set_dl_src(struct ofpbuf *packet, struct xflow_key *key,
++VLOG_DEFINE_THIS_MODULE(xfif_netdev)
+
+/* Configuration parameters. */
+enum { N_QUEUES = 2 }; /* Number of queues for xfif_recv(). */
+enum { MAX_QUEUE_LEN = 100 }; /* Maximum number of packets per queue. */
+enum { N_GROUPS = 16 }; /* Number of port groups. */
+enum { MAX_PORTS = 256 }; /* Maximum number of ports. */
+enum { MAX_FLOWS = 65536 }; /* Maximum number of flows in flow table. */
+
+/* Enough headroom to add a vlan tag, plus an extra 2 bytes to allow IP
+ * headers to be aligned on a 4-byte boundary. */
+enum { XF_NETDEV_HEADROOM = 2 + VLAN_HEADER_LEN };
+
+/* Datapath based on the network device interface from netdev.h. */
+struct xf_netdev {
+ struct list node;
+ int xf_idx;
+ int open_cnt;
+ bool destroyed;
+
+ bool drop_frags; /* Drop all IP fragments, if true. */
+ struct ovs_queue queues[N_QUEUES]; /* Messages queued for xfif_recv(). */
+ struct hmap flow_table; /* Flow table. */
+ struct xflow_port_group groups[N_GROUPS];
+
+ /* Statistics. */
+ long long int n_frags; /* Number of dropped IP fragments. */
+ long long int n_hit; /* Number of flow table matches. */
+ long long int n_missed; /* Number of flow table misses. */
+ long long int n_lost; /* Number of misses not passed to client. */
+
+ /* Ports. */
+ int n_ports;
+ struct xf_netdev_port *ports[MAX_PORTS];
+ struct list port_list;
+ unsigned int serial;
+};
+
+/* A port in a netdev-based datapath. */
+struct xf_netdev_port {
+ int port_no; /* Index into xf_netdev's 'ports'. */
+ struct list node; /* Element in xf_netdev's 'port_list'. */
+ struct netdev *netdev;
+ bool internal; /* Internal port (as XFLOW_PORT_INTERNAL)? */
+};
+
+/* A flow in xf_netdev's 'flow_table'. */
+struct xf_netdev_flow {
+ struct hmap_node node; /* Element in xf_netdev's 'flow_table'. */
+ struct xflow_key key;
+
+ /* Statistics. */
+ struct timespec used; /* Last used time. */
+ long long int packet_count; /* Number of packets matched. */
+ long long int byte_count; /* Number of bytes matched. */
+ uint8_t ip_tos; /* IP TOS value. */
+ uint16_t tcp_ctl; /* Bitwise-OR of seen tcp_ctl values. */
+
+ /* Actions. */
+ union xflow_action *actions;
+ unsigned int n_actions;
+};
+
+/* Interface to netdev-based datapath. */
+struct xfif_netdev {
+ struct xfif xfif;
+ struct xf_netdev *xf;
+ int listen_mask;
+ unsigned int xf_serial;
+};
+
+/* All netdev-based datapaths. */
+static struct xf_netdev *xf_netdevs[256];
+struct list xf_netdev_list = LIST_INITIALIZER(&xf_netdev_list);
+enum { N_XF_NETDEVS = ARRAY_SIZE(xf_netdevs) };
+
+/* Maximum port MTU seen so far. */
+static int max_mtu = ETH_PAYLOAD_MAX;
+
+static int get_port_by_number(struct xf_netdev *, uint16_t port_no,
+ struct xf_netdev_port **portp);
+static int get_port_by_name(struct xf_netdev *, const char *devname,
+ struct xf_netdev_port **portp);
+static void xf_netdev_free(struct xf_netdev *);
+static void xf_netdev_flow_flush(struct xf_netdev *);
+static int do_add_port(struct xf_netdev *, const char *devname, uint16_t flags,
+ uint16_t port_no);
+static int do_del_port(struct xf_netdev *, uint16_t port_no);
+static int xf_netdev_output_control(struct xf_netdev *, const struct ofpbuf *,
+ int queue_no, int port_no, uint32_t arg);
+static int xf_netdev_execute_actions(struct xf_netdev *,
+ struct ofpbuf *, struct xflow_key *,
+ const union xflow_action *, int n);
+
+static struct xfif_netdev *
+xfif_netdev_cast(const struct xfif *xfif)
+{
+ xfif_assert_class(xfif, &xfif_netdev_class);
+ return CONTAINER_OF(xfif, struct xfif_netdev, xfif);
+}
+
+static struct xf_netdev *
+get_xf_netdev(const struct xfif *xfif)
+{
+ return xfif_netdev_cast(xfif)->xf;
+}
+
+static int
+name_to_xf_idx(const char *name)
+{
+ if (!strncmp(name, "xf", 2) && isdigit((unsigned char)name[2])) {
+ int xf_idx = atoi(name + 2);
+ if (xf_idx >= 0 && xf_idx < N_XF_NETDEVS) {
+ return xf_idx;
+ }
+ }
+ return -1;
+}
+
+static struct xf_netdev *
+find_xf_netdev(const char *name)
+{
+ int xf_idx;
+ size_t i;
+
+ xf_idx = name_to_xf_idx(name);
+ if (xf_idx >= 0) {
+ return xf_netdevs[xf_idx];
+ }
+
+ for (i = 0; i < N_XF_NETDEVS; i++) {
+ struct xf_netdev *xf = xf_netdevs[i];
+ if (xf) {
+ struct xf_netdev_port *port;
+ if (!get_port_by_name(xf, name, &port)) {
+ return xf;
+ }
+ }
+ }
+ return NULL;
+}
+
+static struct xfif *
+create_xfif_netdev(struct xf_netdev *xf)
+{
+ struct xfif_netdev *xfif;
+ char *xfname;
+
+ xf->open_cnt++;
+
+ xfname = xasprintf("xf%d", xf->xf_idx);
+ xfif = xmalloc(sizeof *xfif);
+ xfif_init(&xfif->xfif, &xfif_netdev_class, xfname, xf->xf_idx, xf->xf_idx);
+ xfif->xf = xf;
+ xfif->listen_mask = 0;
+ xfif->xf_serial = xf->serial;
+ free(xfname);
+
+ return &xfif->xfif;
+}
+
+static int
+create_xf_netdev(const char *name, int xf_idx, struct xfif **xfifp)
+{
+ struct xf_netdev *xf;
+ int error;
+ int i;
+
+ if (xf_netdevs[xf_idx]) {
+ return EBUSY;
+ }
+
+ /* Create datapath. */
+ xf_netdevs[xf_idx] = xf = xzalloc(sizeof *xf);
+ list_push_back(&xf_netdev_list, &xf->node);
+ xf->xf_idx = xf_idx;
+ xf->open_cnt = 0;
+ xf->drop_frags = false;
+ for (i = 0; i < N_QUEUES; i++) {
+ queue_init(&xf->queues[i]);
+ }
+ hmap_init(&xf->flow_table);
+ for (i = 0; i < N_GROUPS; i++) {
+ xf->groups[i].ports = NULL;
+ xf->groups[i].n_ports = 0;
+ xf->groups[i].group = i;
+ }
+ list_init(&xf->port_list);
+ error = do_add_port(xf, name, XFLOW_PORT_INTERNAL, XFLOWP_LOCAL);
+ if (error) {
+ xf_netdev_free(xf);
+ return ENODEV;
+ }
+
+ *xfifp = create_xfif_netdev(xf);
+ return 0;
+}
+
+static int
+xfif_netdev_open(const char *name, const char *type OVS_UNUSED, bool create,
+ struct xfif **xfifp)
+{
+ if (create) {
+ if (find_xf_netdev(name)) {
+ return EEXIST;
+ } else {
+ int xf_idx = name_to_xf_idx(name);
+ if (xf_idx >= 0) {
+ return create_xf_netdev(name, xf_idx, xfifp);
+ } else {
+ /* Scan for unused xf_idx number. */
+ for (xf_idx = 0; xf_idx < N_XF_NETDEVS; xf_idx++) {
+ int error = create_xf_netdev(name, xf_idx, xfifp);
+ if (error != EBUSY) {
+ return error;
+ }
+ }
+
+ /* All datapath numbers in use. */
+ return ENOBUFS;
+ }
+ }
+ } else {
+ struct xf_netdev *xf = find_xf_netdev(name);
+ if (xf) {
+ *xfifp = create_xfif_netdev(xf);
+ return 0;
+ } else {
+ return ENODEV;
+ }
+ }
+}
+
+static void
+xf_netdev_free(struct xf_netdev *xf)
+{
+ int i;
+
+ xf_netdev_flow_flush(xf);
+ while (xf->n_ports > 0) {
+ struct xf_netdev_port *port = CONTAINER_OF(
+ xf->port_list.next, struct xf_netdev_port, node);
+ do_del_port(xf, port->port_no);
+ }
+ for (i = 0; i < N_QUEUES; i++) {
+ queue_destroy(&xf->queues[i]);
+ }
+ hmap_destroy(&xf->flow_table);
+ for (i = 0; i < N_GROUPS; i++) {
+ free(xf->groups[i].ports);
+ }
+ xf_netdevs[xf->xf_idx] = NULL;
+ list_remove(&xf->node);
+ free(xf);
+}
+
+static void
+xfif_netdev_close(struct xfif *xfif)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ assert(xf->open_cnt > 0);
+ if (--xf->open_cnt == 0 && xf->destroyed) {
+ xf_netdev_free(xf);
+ }
+ free(xfif);
+}
+
+static int
+xfif_netdev_destroy(struct xfif *xfif)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ xf->destroyed = true;
+ return 0;
+}
+
+static int
+xfif_netdev_get_stats(const struct xfif *xfif, struct xflow_stats *stats)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ memset(stats, 0, sizeof *stats);
+ stats->n_flows = hmap_count(&xf->flow_table);
+ stats->cur_capacity = hmap_capacity(&xf->flow_table);
+ stats->max_capacity = MAX_FLOWS;
+ stats->n_ports = xf->n_ports;
+ stats->max_ports = MAX_PORTS;
+ stats->max_groups = N_GROUPS;
+ stats->n_frags = xf->n_frags;
+ stats->n_hit = xf->n_hit;
+ stats->n_missed = xf->n_missed;
+ stats->n_lost = xf->n_lost;
+ stats->max_miss_queue = MAX_QUEUE_LEN;
+ stats->max_action_queue = MAX_QUEUE_LEN;
+ return 0;
+}
+
+static int
+xfif_netdev_get_drop_frags(const struct xfif *xfif, bool *drop_fragsp)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ *drop_fragsp = xf->drop_frags;
+ return 0;
+}
+
+static int
+xfif_netdev_set_drop_frags(struct xfif *xfif, bool drop_frags)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ xf->drop_frags = drop_frags;
+ return 0;
+}
+
+static int
+do_add_port(struct xf_netdev *xf, const char *devname, uint16_t flags,
+ uint16_t port_no)
+{
+ bool internal = (flags & XFLOW_PORT_INTERNAL) != 0;
+ struct xf_netdev_port *port;
+ struct netdev_options netdev_options;
+ struct netdev *netdev;
+ int mtu;
+ int error;
+
+ /* XXX reject devices already in some xf_netdev. */
+
+ /* Open and validate network device. */
+ memset(&netdev_options, 0, sizeof netdev_options);
+ netdev_options.name = devname;
+ netdev_options.ethertype = NETDEV_ETH_TYPE_ANY;
+ if (internal) {
+ netdev_options.type = "tap";
+ }
+
+ error = netdev_open(&netdev_options, &netdev);
+ if (error) {
+ return error;
+ }
+ /* XXX reject loopback devices */
+ /* XXX reject non-Ethernet devices */
+
+ error = netdev_turn_flags_on(netdev, NETDEV_PROMISC, false);
+ if (error) {
+ netdev_close(netdev);
+ return error;
+ }
+
+ port = xmalloc(sizeof *port);
+ port->port_no = port_no;
+ port->netdev = netdev;
+ port->internal = internal;
+
+ netdev_get_mtu(netdev, &mtu);
+ if (mtu > max_mtu) {
+ max_mtu = mtu;
+ }
+
+ list_push_back(&xf->port_list, &port->node);
+ xf->ports[port_no] = port;
+ xf->n_ports++;
+ xf->serial++;
+
+ return 0;
+}
+
+static int
+xfif_netdev_port_add(struct xfif *xfif, const char *devname, uint16_t flags,
+ uint16_t *port_nop)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ int port_no;
+
+ for (port_no = 0; port_no < MAX_PORTS; port_no++) {
+ if (!xf->ports[port_no]) {
+ *port_nop = port_no;
+ return do_add_port(xf, devname, flags, port_no);
+ }
+ }
+ return EFBIG;
+}
+
+static int
+xfif_netdev_port_del(struct xfif *xfif, uint16_t port_no)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ return port_no == XFLOWP_LOCAL ? EINVAL : do_del_port(xf, port_no);
+}
+
+static bool
+is_valid_port_number(uint16_t port_no)
+{
+ return port_no < MAX_PORTS;
+}
+
+static int
+get_port_by_number(struct xf_netdev *xf,
+ uint16_t port_no, struct xf_netdev_port **portp)
+{
+ if (!is_valid_port_number(port_no)) {
+ *portp = NULL;
+ return EINVAL;
+ } else {
+ *portp = xf->ports[port_no];
+ return *portp ? 0 : ENOENT;
+ }
+}
+
+static int
+get_port_by_name(struct xf_netdev *xf,
+ const char *devname, struct xf_netdev_port **portp)
+{
+ struct xf_netdev_port *port;
+
+ LIST_FOR_EACH (port, struct xf_netdev_port, node, &xf->port_list) {
+ if (!strcmp(netdev_get_name(port->netdev), devname)) {
+ *portp = port;
+ return 0;
+ }
+ }
+ return ENOENT;
+}
+
+static int
+do_del_port(struct xf_netdev *xf, uint16_t port_no)
+{
+ struct xf_netdev_port *port;
+ char *name;
+ int error;
+
+ error = get_port_by_number(xf, port_no, &port);
+ if (error) {
+ return error;
+ }
+
+ list_remove(&port->node);
+ xf->ports[port->port_no] = NULL;
+ xf->n_ports--;
+ xf->serial++;
+
+ name = xstrdup(netdev_get_name(port->netdev));
+ netdev_close(port->netdev);
+
+ free(name);
+ free(port);
+
+ return 0;
+}
+
+static void
+answer_port_query(const struct xf_netdev_port *port, struct xflow_port *xflow_port)
+{
+ memset(xflow_port, 0, sizeof *xflow_port);
+ ovs_strlcpy(xflow_port->devname, netdev_get_name(port->netdev),
+ sizeof xflow_port->devname);
+ xflow_port->port = port->port_no;
+ xflow_port->flags = port->internal ? XFLOW_PORT_INTERNAL : 0;
+}
+
+static int
+xfif_netdev_port_query_by_number(const struct xfif *xfif, uint16_t port_no,
+ struct xflow_port *xflow_port)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ struct xf_netdev_port *port;
+ int error;
+
+ error = get_port_by_number(xf, port_no, &port);
+ if (!error) {
+ answer_port_query(port, xflow_port);
+ }
+ return error;
+}
+
+static int
+xfif_netdev_port_query_by_name(const struct xfif *xfif, const char *devname,
+ struct xflow_port *xflow_port)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ struct xf_netdev_port *port;
+ int error;
+
+ error = get_port_by_name(xf, devname, &port);
+ if (!error) {
+ answer_port_query(port, xflow_port);
+ }
+ return error;
+}
+
+static void
+xf_netdev_free_flow(struct xf_netdev *xf, struct xf_netdev_flow *flow)
+{
+ hmap_remove(&xf->flow_table, &flow->node);
+ free(flow->actions);
+ free(flow);
+}
+
+static void
+xf_netdev_flow_flush(struct xf_netdev *xf)
+{
+ struct xf_netdev_flow *flow, *next;
+
+ HMAP_FOR_EACH_SAFE (flow, next, struct xf_netdev_flow, node,
+ &xf->flow_table) {
+ xf_netdev_free_flow(xf, flow);
+ }
+}
+
+static int
+xfif_netdev_flow_flush(struct xfif *xfif)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ xf_netdev_flow_flush(xf);
+ return 0;
+}
+
+static int
+xfif_netdev_port_list(const struct xfif *xfif, struct xflow_port *ports, int n)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ struct xf_netdev_port *port;
+ int i;
+
+ i = 0;
+ LIST_FOR_EACH (port, struct xf_netdev_port, node, &xf->port_list) {
+ struct xflow_port *xflow_port = &ports[i];
+ if (i >= n) {
+ break;
+ }
+ answer_port_query(port, xflow_port);
+ i++;
+ }
+ return xf->n_ports;
+}
+
+static int
+xfif_netdev_port_poll(const struct xfif *xfif_, char **devnamep OVS_UNUSED)
+{
+ struct xfif_netdev *xfif = xfif_netdev_cast(xfif_);
+ if (xfif->xf_serial != xfif->xf->serial) {
+ xfif->xf_serial = xfif->xf->serial;
+ return ENOBUFS;
+ } else {
+ return EAGAIN;
+ }
+}
+
+static void
+xfif_netdev_port_poll_wait(const struct xfif *xfif_)
+{
+ struct xfif_netdev *xfif = xfif_netdev_cast(xfif_);
+ if (xfif->xf_serial != xfif->xf->serial) {
+ poll_immediate_wake();
+ }
+}
+
+static int
+get_port_group(const struct xfif *xfif, int group_no,
+ struct xflow_port_group **groupp)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+
+ if (group_no >= 0 && group_no < N_GROUPS) {
+ *groupp = &xf->groups[group_no];
+ return 0;
+ } else {
+ *groupp = NULL;
+ return EINVAL;
+ }
+}
+
+static int
+xfif_netdev_port_group_get(const struct xfif *xfif, int group_no,
+ uint16_t ports[], int n)
+{
+ struct xflow_port_group *group;
+ int error;
+
+ if (n < 0) {
+ return -EINVAL;
+ }
+
+ error = get_port_group(xfif, group_no, &group);
+ if (!error) {
+ memcpy(ports, group->ports, MIN(n, group->n_ports) * sizeof *ports);
+ return group->n_ports;
+ } else {
+ return -error;
+ }
+}
+
+static int
+xfif_netdev_port_group_set(struct xfif *xfif, int group_no,
+ const uint16_t ports[], int n)
+{
+ struct xflow_port_group *group;
+ int error;
+
+ if (n < 0 || n > MAX_PORTS) {
+ return EINVAL;
+ }
+
+ error = get_port_group(xfif, group_no, &group);
+ if (!error) {
+ free(group->ports);
+ group->ports = xmemdup(ports, n * sizeof *group->ports);
+ group->n_ports = n;
+ group->group = group_no;
+ }
+ return error;
+}
+
+static struct xf_netdev_flow *
+xf_netdev_lookup_flow(const struct xf_netdev *xf,
+ const struct xflow_key *key)
+{
+ struct xf_netdev_flow *flow;
+
+ HMAP_FOR_EACH_WITH_HASH (flow, struct xf_netdev_flow, node,
+ xflow_key_hash(key, 0), &xf->flow_table) {
+ if (xflow_key_equal(&flow->key, key)) {
+ return flow;
+ }
+ }
+ return NULL;
+}
+
+static void
+answer_flow_query(struct xf_netdev_flow *flow, uint32_t query_flags,
+ struct xflow_flow *xflow_flow)
+{
+ if (flow) {
+ xflow_flow->key = flow->key;
+ xflow_flow->stats.n_packets = flow->packet_count;
+ xflow_flow->stats.n_bytes = flow->byte_count;
+ xflow_flow->stats.used_sec = flow->used.tv_sec;
+ xflow_flow->stats.used_nsec = flow->used.tv_nsec;
+ xflow_flow->stats.tcp_flags = TCP_FLAGS(flow->tcp_ctl);
+ xflow_flow->stats.ip_tos = flow->ip_tos;
+ xflow_flow->stats.error = 0;
+ if (xflow_flow->n_actions > 0) {
+ unsigned int n = MIN(xflow_flow->n_actions, flow->n_actions);
+ memcpy(xflow_flow->actions, flow->actions,
+ n * sizeof *xflow_flow->actions);
+ xflow_flow->n_actions = flow->n_actions;
+ }
+
+ if (query_flags & XFLOWFF_ZERO_TCP_FLAGS) {
+ flow->tcp_ctl = 0;
+ }
+
+ } else {
+ xflow_flow->stats.error = ENOENT;
+ }
+}
+
+static int
+xfif_netdev_flow_get(const struct xfif *xfif, struct xflow_flow flows[], int n)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ int i;
+
+ for (i = 0; i < n; i++) {
+ struct xflow_flow *xflow_flow = &flows[i];
+ answer_flow_query(xf_netdev_lookup_flow(xf, &xflow_flow->key),
+ xflow_flow->flags, xflow_flow);
+ }
+ return 0;
+}
+
+static int
+xfif_netdev_validate_actions(const union xflow_action *actions, int n_actions,
+ bool *mutates)
+{
+ unsigned int i;
+
+ *mutates = false;
+ for (i = 0; i < n_actions; i++) {
+ const union xflow_action *a = &actions[i];
+ switch (a->type) {
+ case XFLOWAT_OUTPUT:
+ if (a->output.port >= MAX_PORTS) {
+ return EINVAL;
+ }
+ break;
+
+ case XFLOWAT_OUTPUT_GROUP:
+ *mutates = true;
+ if (a->output_group.group >= N_GROUPS) {
+ return EINVAL;
+ }
+ break;
+
+ case XFLOWAT_CONTROLLER:
+ break;
+
+ case XFLOWAT_SET_DL_TCI:
+ *mutates = true;
+ if (a->dl_tci.mask != htons(VLAN_VID_MASK)
+ && a->dl_tci.mask != htons(VLAN_PCP_MASK)
+ && a->dl_tci.mask != htons(VLAN_VID_MASK | VLAN_PCP_MASK)) {
+ return EINVAL;
+ }
+ if (a->dl_tci.tci & ~a->dl_tci.mask){
+ return EINVAL;
+ }
+ break;
+
+ case XFLOWAT_SET_NW_TOS:
+ *mutates = true;
+ if (a->nw_tos.nw_tos & IP_ECN_MASK) {
+ return EINVAL;
+ }
+ break;
+
+ case XFLOWAT_STRIP_VLAN:
+ case XFLOWAT_SET_DL_SRC:
+ case XFLOWAT_SET_DL_DST:
+ case XFLOWAT_SET_NW_SRC:
+ case XFLOWAT_SET_NW_DST:
+ case XFLOWAT_SET_TP_SRC:
+ case XFLOWAT_SET_TP_DST:
+ *mutates = true;
+ break;
+
+ default:
+ return EOPNOTSUPP;
+ }
+ }
+ return 0;
+}
+
+static int
+set_flow_actions(struct xf_netdev_flow *flow, struct xflow_flow *xflow_flow)
+{
+ size_t n_bytes;
+ bool mutates;
+ int error;
+
+ if (xflow_flow->n_actions >= 4096 / sizeof *xflow_flow->actions) {
+ return EINVAL;
+ }
+ error = xfif_netdev_validate_actions(xflow_flow->actions,
+ xflow_flow->n_actions, &mutates);
+ if (error) {
+ return error;
+ }
+
+ n_bytes = xflow_flow->n_actions * sizeof *flow->actions;
+ flow->actions = xrealloc(flow->actions, n_bytes);
+ flow->n_actions = xflow_flow->n_actions;
+ memcpy(flow->actions, xflow_flow->actions, n_bytes);
+ return 0;
+}
+
+static int
+add_flow(struct xfif *xfif, struct xflow_flow *xflow_flow)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ struct xf_netdev_flow *flow;
+ int error;
+
+ flow = xzalloc(sizeof *flow);
+ flow->key = xflow_flow->key;
+
+ error = set_flow_actions(flow, xflow_flow);
+ if (error) {
+ free(flow);
+ return error;
+ }
+
+ hmap_insert(&xf->flow_table, &flow->node,
+ xflow_key_hash(&flow->key, 0));
+ return 0;
+}
+
+static void
+clear_stats(struct xf_netdev_flow *flow)
+{
+ flow->used.tv_sec = 0;
+ flow->used.tv_nsec = 0;
+ flow->packet_count = 0;
+ flow->byte_count = 0;
+ flow->ip_tos = 0;
+ flow->tcp_ctl = 0;
+}
+
+static int
+xfif_netdev_flow_put(struct xfif *xfif, struct xflow_flow_put *put)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ struct xf_netdev_flow *flow;
+
+ flow = xf_netdev_lookup_flow(xf, &put->flow.key);
+ if (!flow) {
+ if (put->flags & XFLOWPF_CREATE) {
+ if (hmap_count(&xf->flow_table) < MAX_FLOWS) {
+ return add_flow(xfif, &put->flow);
+ } else {
+ return EFBIG;
+ }
+ } else {
+ return ENOENT;
+ }
+ } else {
+ if (put->flags & XFLOWPF_MODIFY) {
+ int error = set_flow_actions(flow, &put->flow);
+ if (!error && put->flags & XFLOWPF_ZERO_STATS) {
+ clear_stats(flow);
+ }
+ return error;
+ } else {
+ return EEXIST;
+ }
+ }
+}
+
+
+static int
+xfif_netdev_flow_del(struct xfif *xfif, struct xflow_flow *xflow_flow)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ struct xf_netdev_flow *flow;
+
+ flow = xf_netdev_lookup_flow(xf, &xflow_flow->key);
+ if (flow) {
+ answer_flow_query(flow, 0, xflow_flow);
+ xf_netdev_free_flow(xf, flow);
+ return 0;
+ } else {
+ return ENOENT;
+ }
+}
+
+static int
+xfif_netdev_flow_list(const struct xfif *xfif, struct xflow_flow flows[], int n)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ struct xf_netdev_flow *flow;
+ int i;
+
+ i = 0;
+ HMAP_FOR_EACH (flow, struct xf_netdev_flow, node, &xf->flow_table) {
+ if (i >= n) {
+ break;
+ }
+ answer_flow_query(flow, 0, &flows[i++]);
+ }
+ return hmap_count(&xf->flow_table);
+}
+
+static int
+xfif_netdev_execute(struct xfif *xfif, uint16_t in_port,
+ const union xflow_action actions[], int n_actions,
+ const struct ofpbuf *packet)
+{
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ struct ofpbuf copy;
+ bool mutates;
+ struct xflow_key key;
+ flow_t flow;
+ int error;
+
+ if (packet->size < ETH_HEADER_LEN || packet->size > UINT16_MAX) {
+ return EINVAL;
+ }
+
+ error = xfif_netdev_validate_actions(actions, n_actions, &mutates);
+ if (error) {
+ return error;
+ }
+
+ if (mutates) {
+ /* We need a deep copy of 'packet' since we're going to modify its
+ * data. */
+ ofpbuf_init(©, XF_NETDEV_HEADROOM + packet->size);
+ copy.data = (char*)copy.base + XF_NETDEV_HEADROOM;
+ ofpbuf_put(©, packet->data, packet->size);
+ } else {
+ /* We still need a shallow copy of 'packet', even though we won't
+ * modify its data, because flow_extract() modifies packet->l2, etc.
+ * We could probably get away with modifying those but it's more polite
+ * if we don't. */
+ copy = *packet;
+ }
+ flow_extract(©, 0, in_port, &flow);
+ xflow_key_from_flow(&key, &flow);
+ error = xf_netdev_execute_actions(xf, ©, &key, actions, n_actions);
+ if (mutates) {
+ ofpbuf_uninit(©);
+ }
+ return error;
+}
+
+static int
+xfif_netdev_recv_get_mask(const struct xfif *xfif, int *listen_mask)
+{
+ struct xfif_netdev *xfif_netdev = xfif_netdev_cast(xfif);
+ *listen_mask = xfif_netdev->listen_mask;
+ return 0;
+}
+
+static int
+xfif_netdev_recv_set_mask(struct xfif *xfif, int listen_mask)
+{
+ struct xfif_netdev *xfif_netdev = xfif_netdev_cast(xfif);
+ if (!(listen_mask & ~XFLOWL_ALL)) {
+ xfif_netdev->listen_mask = listen_mask;
+ return 0;
+ } else {
+ return EINVAL;
+ }
+}
+
+static struct ovs_queue *
+find_nonempty_queue(struct xfif *xfif)
+{
+ struct xfif_netdev *xfif_netdev = xfif_netdev_cast(xfif);
+ struct xf_netdev *xf = get_xf_netdev(xfif);
+ int mask = xfif_netdev->listen_mask;
+ int i;
+
+ for (i = 0; i < N_QUEUES; i++) {
+ struct ovs_queue *q = &xf->queues[i];
+ if (q->n && mask & (1u << i)) {
+ return q;
+ }
+ }
+ return NULL;
+}
+
+static int
+xfif_netdev_recv(struct xfif *xfif, struct ofpbuf **bufp)
+{
+ struct ovs_queue *q = find_nonempty_queue(xfif);
+ if (q) {
+ *bufp = queue_pop_head(q);
+ return 0;
+ } else {
+ return EAGAIN;
+ }
+}
+
+static void
+xfif_netdev_recv_wait(struct xfif *xfif)
+{
+ struct ovs_queue *q = find_nonempty_queue(xfif);
+ if (q) {
+ poll_immediate_wake();
+ } else {
+ /* No messages ready to be received, and xf_wait() will ensure that we
+ * wake up to queue new messages, so there is nothing to do. */
+ }
+}
+\f
+static void
+xf_netdev_flow_used(struct xf_netdev_flow *flow,
+ const struct xflow_key *key,
+ const struct ofpbuf *packet)
+{
+ time_timespec(&flow->used);
+ flow->packet_count++;
+ flow->byte_count += packet->size;
+ if (key->dl_type == htons(ETH_TYPE_IP)) {
+ struct ip_header *nh = packet->l3;
+ flow->ip_tos = nh->ip_tos;
+
+ if (key->nw_proto == IPPROTO_TCP) {
+ struct tcp_header *th = packet->l4;
+ flow->tcp_ctl |= th->tcp_ctl;
+ }
+ }
+}
+
+static void
+xf_netdev_port_input(struct xf_netdev *xf, struct xf_netdev_port *port,
+ struct ofpbuf *packet)
+{
+ struct xf_netdev_flow *flow;
+ struct xflow_key key;
+ flow_t f;
+
+ if (flow_extract(packet, 0, port->port_no, &f) && xf->drop_frags) {
+ xf->n_frags++;
+ return;
+ }
+ xflow_key_from_flow(&key, &f);
+
+ flow = xf_netdev_lookup_flow(xf, &key);
+ if (flow) {
+ xf_netdev_flow_used(flow, &key, packet);
+ xf_netdev_execute_actions(xf, packet, &key,
+ flow->actions, flow->n_actions);
+ xf->n_hit++;
+ } else {
+ xf->n_missed++;
+ xf_netdev_output_control(xf, packet, _XFLOWL_MISS_NR, port->port_no, 0);
+ }
+}
+
+static void
+xf_netdev_run(void)
+{
+ struct ofpbuf packet;
+ struct xf_netdev *xf;
+
+ ofpbuf_init(&packet, XF_NETDEV_HEADROOM + max_mtu);
+ LIST_FOR_EACH (xf, struct xf_netdev, node, &xf_netdev_list) {
+ struct xf_netdev_port *port;
+
+ LIST_FOR_EACH (port, struct xf_netdev_port, node, &xf->port_list) {
+ int error;
+
+ /* Reset packet contents. */
+ packet.data = (char*)packet.base + XF_NETDEV_HEADROOM;
+ packet.size = 0;
+
+ error = netdev_recv(port->netdev, &packet);
+ if (!error) {
+ xf_netdev_port_input(xf, port, &packet);
+ } else if (error != EAGAIN) {
+ struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+ VLOG_ERR_RL(&rl, "error receiving data from %s: %s",
+ netdev_get_name(port->netdev), strerror(error));
+ }
+ }
+ }
+ ofpbuf_uninit(&packet);
+}
+
+static void
+xf_netdev_wait(void)
+{
+ struct xf_netdev *xf;
+
+ LIST_FOR_EACH (xf, struct xf_netdev, node, &xf_netdev_list) {
+ struct xf_netdev_port *port;
+ LIST_FOR_EACH (port, struct xf_netdev_port, node, &xf->port_list) {
+ netdev_recv_wait(port->netdev);
+ }
+ }
+}
+
+
+/* Modify or add a 802.1Q header in 'packet' according to 'a'. */
+static void
+xf_netdev_set_dl_tci(struct ofpbuf *packet, struct xflow_key *key,
+ const struct xflow_action_dl_tci *a)
+{
+ struct vlan_eth_header *veh;
+
+ if (key->dl_tci) {
+ veh = packet->l2;
+ veh->veth_tci = (veh->veth_tci & ~a->mask) | a->tci;
+ } else {
+ /* Insert new 802.1Q header. */
+ struct eth_header *eh = packet->l2;
+ struct vlan_eth_header tmp;
+ memcpy(tmp.veth_dst, eh->eth_dst, ETH_ADDR_LEN);
+ memcpy(tmp.veth_src, eh->eth_src, ETH_ADDR_LEN);
+ tmp.veth_type = htons(ETH_TYPE_VLAN);
+ tmp.veth_tci = htons(a->tci);
+ tmp.veth_next_type = eh->eth_type;
+
+ veh = ofpbuf_push_uninit(packet, VLAN_HEADER_LEN);
+ memcpy(veh, &tmp, sizeof tmp);
+ packet->l2 = (char*)packet->l2 - VLAN_HEADER_LEN;
+ }
+
+ key->dl_tci = veh->veth_tci | htons(XFLOW_TCI_PRESENT);
+}
+
+static void
+xf_netdev_strip_vlan(struct ofpbuf *packet, struct xflow_key *key)
+{
+ struct vlan_eth_header *veh = packet->l2;
+ if (veh->veth_type == htons(ETH_TYPE_VLAN)) {
+ struct eth_header tmp;
+
+ memcpy(tmp.eth_dst, veh->veth_dst, ETH_ADDR_LEN);
+ memcpy(tmp.eth_src, veh->veth_src, ETH_ADDR_LEN);
+ tmp.eth_type = veh->veth_next_type;
+
+ packet->size -= VLAN_HEADER_LEN;
+ packet->data = (char*)packet->data + VLAN_HEADER_LEN;
+ packet->l2 = (char*)packet->l2 + VLAN_HEADER_LEN;
+ memcpy(packet->data, &tmp, sizeof tmp);
+
+ key->dl_tci = htons(0);
+ }
+}
+
+static void
- memcpy(key->dl_src, dl_addr, sizeof key->dl_src);
++xf_netdev_set_dl_src(struct ofpbuf *packet,
+ const uint8_t dl_addr[ETH_ADDR_LEN])
+{
+ struct eth_header *eh = packet->l2;
+ memcpy(eh->eth_src, dl_addr, sizeof eh->eth_src);
- xf_netdev_set_dl_dst(struct ofpbuf *packet, struct xflow_key *key,
+}
+
+static void
- memcpy(key->dl_dst, dl_addr, sizeof key->dl_dst);
++xf_netdev_set_dl_dst(struct ofpbuf *packet,
+ const uint8_t dl_addr[ETH_ADDR_LEN])
+{
+ struct eth_header *eh = packet->l2;
+ memcpy(eh->eth_dst, dl_addr, sizeof eh->eth_dst);
- xf_netdev_set_nw_addr(struct ofpbuf *packet, struct xflow_key *key,
+}
+
+static void
-
- if (a->type == XFLOWAT_SET_NW_SRC) {
- key->nw_src = a->type;
- } else {
- key->nw_dst = a->type;
- }
++xf_netdev_set_nw_addr(struct ofpbuf *packet, const struct xflow_key *key,
+ const struct xflow_action_nw_addr *a)
+{
+ if (key->dl_type == htons(ETH_TYPE_IP)) {
+ struct ip_header *nh = packet->l3;
+ uint32_t *field;
+
+ field = a->type == XFLOWAT_SET_NW_SRC ? &nh->ip_src : &nh->ip_dst;
+ if (key->nw_proto == IP_TYPE_TCP) {
+ struct tcp_header *th = packet->l4;
+ th->tcp_csum = recalc_csum32(th->tcp_csum, *field, a->nw_addr);
+ } else if (key->nw_proto == IP_TYPE_UDP) {
+ struct udp_header *uh = packet->l4;
+ if (uh->udp_csum) {
+ uh->udp_csum = recalc_csum32(uh->udp_csum, *field, a->nw_addr);
+ if (!uh->udp_csum) {
+ uh->udp_csum = 0xffff;
+ }
+ }
+ }
+ nh->ip_csum = recalc_csum32(nh->ip_csum, *field, a->nw_addr);
+ *field = a->nw_addr;
- xf_netdev_set_nw_tos(struct ofpbuf *packet, struct xflow_key *key,
+ }
+}
+
+static void
- key->nw_tos = a->nw_tos;
++xf_netdev_set_nw_tos(struct ofpbuf *packet, const struct xflow_key *key,
+ const struct xflow_action_nw_tos *a)
+{
+ if (key->dl_type == htons(ETH_TYPE_IP)) {
+ struct ip_header *nh = packet->l3;
+ uint8_t *field = &nh->ip_tos;
+
+ /* Set the DSCP bits and preserve the ECN bits. */
+ uint8_t new = a->nw_tos | (nh->ip_tos & IP_ECN_MASK);
+
+ nh->ip_csum = recalc_csum16(nh->ip_csum, htons((uint16_t)*field),
+ htons((uint16_t)a->nw_tos));
+ *field = new;
- xf_netdev_set_tp_port(struct ofpbuf *packet, struct xflow_key *key,
+ }
+}
+
+static void
-
- if (a->type == XFLOWAT_SET_TP_SRC) {
- key->tp_src = a->tp_port;
- } else {
- key->tp_dst = a->tp_port;
- }
++xf_netdev_set_tp_port(struct ofpbuf *packet, const struct xflow_key *key,
+ const struct xflow_action_tp_port *a)
+{
+ if (key->dl_type == htons(ETH_TYPE_IP)) {
+ uint16_t *field;
+ if (key->nw_proto == IPPROTO_TCP) {
+ struct tcp_header *th = packet->l4;
+ field = a->type == XFLOWAT_SET_TP_SRC ? &th->tcp_src : &th->tcp_dst;
+ th->tcp_csum = recalc_csum16(th->tcp_csum, *field, a->tp_port);
+ *field = a->tp_port;
+ } else if (key->nw_proto == IPPROTO_UDP) {
+ struct udp_header *uh = packet->l4;
+ field = a->type == XFLOWAT_SET_TP_SRC ? &uh->udp_src : &uh->udp_dst;
+ uh->udp_csum = recalc_csum16(uh->udp_csum, *field, a->tp_port);
+ *field = a->tp_port;
+ } else {
+ return;
+ }
- xf_netdev_set_dl_src(packet, key, a->dl_addr.dl_addr);
+ }
+}
+
+static void
+xf_netdev_output_port(struct xf_netdev *xf, struct ofpbuf *packet,
+ uint16_t out_port)
+{
+ struct xf_netdev_port *p = xf->ports[out_port];
+ if (p) {
+ netdev_send(p->netdev, packet);
+ }
+}
+
+static void
+xf_netdev_output_group(struct xf_netdev *xf, uint16_t group, uint16_t in_port,
+ struct ofpbuf *packet)
+{
+ struct xflow_port_group *g = &xf->groups[group];
+ int i;
+
+ for (i = 0; i < g->n_ports; i++) {
+ uint16_t out_port = g->ports[i];
+ if (out_port != in_port) {
+ xf_netdev_output_port(xf, packet, out_port);
+ }
+ }
+}
+
+static int
+xf_netdev_output_control(struct xf_netdev *xf, const struct ofpbuf *packet,
+ int queue_no, int port_no, uint32_t arg)
+{
+ struct ovs_queue *q = &xf->queues[queue_no];
+ struct xflow_msg *header;
+ struct ofpbuf *msg;
+ size_t msg_size;
+
+ if (q->n >= MAX_QUEUE_LEN) {
+ xf->n_lost++;
+ return ENOBUFS;
+ }
+
+ msg_size = sizeof *header + packet->size;
+ msg = ofpbuf_new(msg_size + XFIF_RECV_MSG_PADDING);
+ header = ofpbuf_put_uninit(msg, sizeof *header);
+ ofpbuf_reserve(msg, XFIF_RECV_MSG_PADDING);
+ header->type = queue_no;
+ header->length = msg_size;
+ header->port = port_no;
+ header->arg = arg;
+ ofpbuf_put(msg, packet->data, packet->size);
+ queue_push_tail(q, msg);
+
+ return 0;
+}
+
+static int
+xf_netdev_execute_actions(struct xf_netdev *xf,
+ struct ofpbuf *packet, struct xflow_key *key,
+ const union xflow_action *actions, int n_actions)
+{
+ int i;
+ for (i = 0; i < n_actions; i++) {
+ const union xflow_action *a = &actions[i];
+
+ switch (a->type) {
+ case XFLOWAT_OUTPUT:
+ xf_netdev_output_port(xf, packet, a->output.port);
+ break;
+
+ case XFLOWAT_OUTPUT_GROUP:
+ xf_netdev_output_group(xf, a->output_group.group, key->in_port,
+ packet);
+ break;
+
+ case XFLOWAT_CONTROLLER:
+ xf_netdev_output_control(xf, packet, _XFLOWL_ACTION_NR,
+ key->in_port, a->controller.arg);
+ break;
+
+ case XFLOWAT_SET_DL_TCI:
+ xf_netdev_set_dl_tci(packet, key, &a->dl_tci);
+ break;
+
+ case XFLOWAT_STRIP_VLAN:
+ xf_netdev_strip_vlan(packet, key);
+ break;
+
+ case XFLOWAT_SET_DL_SRC:
- xf_netdev_set_dl_dst(packet, key, a->dl_addr.dl_addr);
++ xf_netdev_set_dl_src(packet, a->dl_addr.dl_addr);
+ break;
+
+ case XFLOWAT_SET_DL_DST:
++ xf_netdev_set_dl_dst(packet, a->dl_addr.dl_addr);
+ break;
+
+ case XFLOWAT_SET_NW_SRC:
+ case XFLOWAT_SET_NW_DST:
+ xf_netdev_set_nw_addr(packet, key, &a->nw_addr);
+ break;
+
+ case XFLOWAT_SET_NW_TOS:
+ xf_netdev_set_nw_tos(packet, key, &a->nw_tos);
+ break;
+
+ case XFLOWAT_SET_TP_SRC:
+ case XFLOWAT_SET_TP_DST:
+ xf_netdev_set_tp_port(packet, key, &a->tp_port);
+ break;
+ }
+ }
+ return 0;
+}
+
+const struct xfif_class xfif_netdev_class = {
+ "netdev",
+ xf_netdev_run,
+ xf_netdev_wait,
+ NULL, /* enumerate */
+ xfif_netdev_open,
+ xfif_netdev_close,
+ NULL, /* get_all_names */
+ xfif_netdev_destroy,
+ xfif_netdev_get_stats,
+ xfif_netdev_get_drop_frags,
+ xfif_netdev_set_drop_frags,
+ xfif_netdev_port_add,
+ xfif_netdev_port_del,
+ xfif_netdev_port_query_by_number,
+ xfif_netdev_port_query_by_name,
+ xfif_netdev_port_list,
+ xfif_netdev_port_poll,
+ xfif_netdev_port_poll_wait,
+ xfif_netdev_port_group_get,
+ xfif_netdev_port_group_set,
+ xfif_netdev_flow_get,
+ xfif_netdev_flow_put,
+ xfif_netdev_flow_del,
+ xfif_netdev_flow_flush,
+ xfif_netdev_flow_list,
+ xfif_netdev_execute,
+ xfif_netdev_recv_get_mask,
+ xfif_netdev_recv_set_mask,
+ NULL, /* get_sflow_probability */
+ NULL, /* set_sflow_probability */
+ xfif_netdev_recv,
+ xfif_netdev_recv_wait,
+};
* 'probability' is expressed as the number of packets out of UINT_MAX to
* sample, e.g. probability/UINT_MAX is the probability of sampling a given
* packet. */
- int (*set_sflow_probability)(struct dpif *dpif, uint32_t probability);
+ int (*set_sflow_probability)(struct xfif *xfif, uint32_t probability);
- * priority value for use in the ODPAT_SET_PRIORITY action in
+ /* Translates OpenFlow queue ID 'queue_id' (in host byte order) into a
- int (*queue_to_priority)(const struct dpif *dpif, uint32_t queue_id,
++ * priority value for use in the XFLOWAT_SET_PRIORITY action in
+ * '*priority'. */
- /* Attempts to receive a message from 'dpif'. If successful, stores the
++ int (*queue_to_priority)(const struct xfif *xfif, uint32_t queue_id,
+ uint32_t *priority);
+
+ /* Attempts to receive a message from 'xfif'. If successful, stores the
* message into '*packetp'. The message, if one is received, must begin
- * with 'struct odp_msg' as a header, and must have at least
- * DPIF_RECV_MSG_PADDING bytes of headroom (allocated using
+ * with 'struct xflow_msg' as a header, and must have at least
+ * XFIF_RECV_MSG_PADDING bytes of headroom (allocated using
* e.g. ofpbuf_reserve()). Only messages of the types selected with the
* set_listen_mask member function should be received.
*
#include "svec.h"
#include "util.h"
#include "valgrind.h"
-
#include "vlog.h"
- #define THIS_MODULE VLM_xfif
+
-VLOG_DEFINE_THIS_MODULE(dpif)
++VLOG_DEFINE_THIS_MODULE(xfif)
-static const struct dpif_class *base_dpif_classes[] = {
+static const struct xfif_class *base_xfif_classes[] = {
#ifdef HAVE_NETLINK
- &dpif_linux_class,
+ &xfif_linux_class,
#endif
- &dpif_netdev_class,
+ &xfif_netdev_class,
};
-struct registered_dpif_class {
- struct dpif_class dpif_class;
+struct registered_xfif_class {
+ struct xfif_class xfif_class;
int refcount;
};
-static struct shash dpif_classes = SHASH_INITIALIZER(&dpif_classes);
+static struct shash xfif_classes = SHASH_INITIALIZER(&xfif_classes);
/* Rate limit for individual messages going to or from the datapath, output at
* DBG level. This is very high because, if these are enabled, it is because
return 0;
}
-/* Arranges for the poll loop to wake up when 'dpif' has a message queued to be
- * received with dpif_recv(). */
+/* Arranges for the poll loop to wake up when 'xfif' has a message queued to be
+ * received with xfif_recv(). */
void
-dpif_recv_wait(struct dpif *dpif)
+xfif_recv_wait(struct xfif *xfif)
{
- dpif->dpif_class->recv_wait(dpif);
+ xfif->xfif_class->recv_wait(xfif);
}
-/* Obtains the NetFlow engine type and engine ID for 'dpif' into '*engine_type'
+/* Obtains the NetFlow engine type and engine ID for 'xfif' into '*engine_type'
* and '*engine_id', respectively. */
void
-dpif_get_netflow_ids(const struct dpif *dpif,
+xfif_get_netflow_ids(const struct xfif *xfif,
uint8_t *engine_type, uint8_t *engine_id)
{
- *engine_type = dpif->netflow_engine_type;
- *engine_id = dpif->netflow_engine_id;
+ *engine_type = xfif->netflow_engine_type;
+ *engine_id = xfif->netflow_engine_id;
}
+
+ /* Translates OpenFlow queue ID 'queue_id' (in host byte order) into a priority
+ * value for use in the ODPAT_SET_PRIORITY action. On success, returns 0 and
+ * stores the priority into '*priority'. On failure, returns a positive errno
+ * value and stores 0 into '*priority'. */
+ int
+ dpif_queue_to_priority(const struct dpif *dpif, uint32_t queue_id,
+ uint32_t *priority)
+ {
+ int error = (dpif->dpif_class->queue_to_priority
+ ? dpif->dpif_class->queue_to_priority(dpif, queue_id,
+ priority)
+ : EOPNOTSUPP);
+ if (error) {
+ *priority = 0;
+ }
+ log_operation(dpif, "queue_to_priority", error);
+ return error;
+ }
\f
void
-dpif_init(struct dpif *dpif, const struct dpif_class *dpif_class,
+xfif_init(struct xfif *xfif, const struct xfif_class *xfif_class,
const char *name,
uint8_t netflow_engine_type, uint8_t netflow_engine_id)
{
--- /dev/null
+/*
+ * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#ifndef XFIF_H
+#define XFIF_H 1
+
+#include "openvswitch/xflow.h"
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct xfif;
+struct ofpbuf;
+struct svec;
+struct xfif_class;
+
+void xf_run(void);
+void xf_wait(void);
+
+int xf_register_provider(const struct xfif_class *);
+int xf_unregister_provider(const char *type);
+void xf_enumerate_types(struct svec *types);
+
+int xf_enumerate_names(const char *type, struct svec *names);
+void xf_parse_name(const char *datapath_name, char **name, char **type);
+
+int xfif_open(const char *name, const char *type, struct xfif **);
+int xfif_create(const char *name, const char *type, struct xfif **);
+int xfif_create_and_open(const char *name, const char *type, struct xfif **);
+void xfif_close(struct xfif *);
+
+const char *xfif_name(const struct xfif *);
+const char *xfif_base_name(const struct xfif *);
+int xfif_get_all_names(const struct xfif *, struct svec *);
+
+int xfif_delete(struct xfif *);
+
+int xfif_get_xf_stats(const struct xfif *, struct xflow_stats *);
+int xfif_get_drop_frags(const struct xfif *, bool *drop_frags);
+int xfif_set_drop_frags(struct xfif *, bool drop_frags);
+
+int xfif_port_add(struct xfif *, const char *devname, uint16_t flags,
+ uint16_t *port_no);
+int xfif_port_del(struct xfif *, uint16_t port_no);
+int xfif_port_query_by_number(const struct xfif *, uint16_t port_no,
+ struct xflow_port *);
+int xfif_port_query_by_name(const struct xfif *, const char *devname,
+ struct xflow_port *);
+int xfif_port_get_name(struct xfif *, uint16_t port_no,
+ char *name, size_t name_size);
+int xfif_port_list(const struct xfif *, struct xflow_port **, size_t *n_ports);
+
+int xfif_port_poll(const struct xfif *, char **devnamep);
+void xfif_port_poll_wait(const struct xfif *);
+
+int xfif_port_group_get(const struct xfif *, uint16_t group,
+ uint16_t **ports, size_t *n_ports);
+int xfif_port_group_set(struct xfif *, uint16_t group,
+ const uint16_t ports[], size_t n_ports);
+
+int xfif_flow_flush(struct xfif *);
+int xfif_flow_put(struct xfif *, struct xflow_flow_put *);
+int xfif_flow_del(struct xfif *, struct xflow_flow *);
+int xfif_flow_get(const struct xfif *, struct xflow_flow *);
+int xfif_flow_get_multiple(const struct xfif *, struct xflow_flow[], size_t n);
+int xfif_flow_list(const struct xfif *, struct xflow_flow[], size_t n,
+ size_t *n_out);
+int xfif_flow_list_all(const struct xfif *,
+ struct xflow_flow **flowsp, size_t *np);
+
+int xfif_execute(struct xfif *, uint16_t in_port,
+ const union xflow_action[], size_t n_actions,
+ const struct ofpbuf *);
+
+int xfif_recv_get_mask(const struct xfif *, int *listen_mask);
+int xfif_recv_set_mask(struct xfif *, int listen_mask);
+int xfif_get_sflow_probability(const struct xfif *, uint32_t *probability);
+int xfif_set_sflow_probability(struct xfif *, uint32_t probability);
+int xfif_recv(struct xfif *, struct ofpbuf **);
+int xfif_recv_purge(struct xfif *);
+void xfif_recv_wait(struct xfif *);
+
+void xfif_get_netflow_ids(const struct xfif *,
+ uint8_t *engine_type, uint8_t *engine_id);
+
++int xfif_queue_to_priority(const struct xfif *, uint32_t queue_id,
++ uint32_t *priority);
++
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* xfif.h */
--- /dev/null
+/*
+ * Copyright (c) 2009, 2010 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <config.h>
+#include "xflow-util.h"
+#include <inttypes.h>
+#include <stdlib.h>
+#include <string.h>
+#include "coverage.h"
+#include "dynamic-string.h"
+#include "flow.h"
+#include "packets.h"
+#include "timeval.h"
+#include "util.h"
+
+union xflow_action *
+xflow_actions_add(struct xflow_actions *actions, uint16_t type)
+{
+ union xflow_action *a;
+ if (actions->n_actions < MAX_XFLOW_ACTIONS) {
+ a = &actions->actions[actions->n_actions++];
+ } else {
+ COVERAGE_INC(xflow_overflow);
+ actions->n_actions = MAX_XFLOW_ACTIONS + 1;
+ a = &actions->actions[MAX_XFLOW_ACTIONS - 1];
+ }
+ memset(a, 0, sizeof *a);
+ a->type = type;
+ return a;
+}
+
+void
+format_xflow_key(struct ds *ds, const struct xflow_key *key)
+{
+ ds_put_format(ds, "tunnel%"PRIx32":in_port%04x",
+ key->tun_id, key->in_port);
+ if (key->dl_tci) {
+ ds_put_format(ds, ":vlan%"PRIu16":pcp%d",
+ vlan_tci_to_vid(key->dl_tci),
+ vlan_tci_to_pcp(key->dl_tci));
+ }
+ ds_put_format(ds, " mac"ETH_ADDR_FMT"->"ETH_ADDR_FMT" type%04x "
+ "proto%"PRId8" tos%"PRIu8" ip"IP_FMT"->"IP_FMT" port%d->%d",
+ ETH_ADDR_ARGS(key->dl_src), ETH_ADDR_ARGS(key->dl_dst),
+ ntohs(key->dl_type), key->nw_proto, key->nw_tos,
+ IP_ARGS(&key->nw_src), IP_ARGS(&key->nw_dst),
+ ntohs(key->tp_src), ntohs(key->tp_dst));
+}
+
+void
+format_xflow_action(struct ds *ds, const union xflow_action *a)
+{
+ switch (a->type) {
+ case XFLOWAT_OUTPUT:
+ ds_put_format(ds, "%"PRIu16, a->output.port);
+ break;
+ case XFLOWAT_OUTPUT_GROUP:
+ ds_put_format(ds, "g%"PRIu16, a->output_group.group);
+ break;
+ case XFLOWAT_CONTROLLER:
+ ds_put_format(ds, "ctl(%"PRIu32")", a->controller.arg);
+ break;
+ case XFLOWAT_SET_TUNNEL:
+ ds_put_format(ds, "set_tunnel(0x%08"PRIx32")", ntohl(a->tunnel.tun_id));
+ break;
+ case XFLOWAT_SET_DL_TCI:
+ ds_put_format(ds, "set_tci(%04"PRIx16",mask=%04"PRIx16")",
+ ntohs(a->dl_tci.tci), ntohs(a->dl_tci.mask));
+ break;
+ case XFLOWAT_STRIP_VLAN:
+ ds_put_format(ds, "strip_vlan");
+ break;
+ case XFLOWAT_SET_DL_SRC:
+ ds_put_format(ds, "set_dl_src("ETH_ADDR_FMT")",
+ ETH_ADDR_ARGS(a->dl_addr.dl_addr));
+ break;
+ case XFLOWAT_SET_DL_DST:
+ ds_put_format(ds, "set_dl_dst("ETH_ADDR_FMT")",
+ ETH_ADDR_ARGS(a->dl_addr.dl_addr));
+ break;
+ case XFLOWAT_SET_NW_SRC:
+ ds_put_format(ds, "set_nw_src("IP_FMT")",
+ IP_ARGS(&a->nw_addr.nw_addr));
+ break;
+ case XFLOWAT_SET_NW_DST:
+ ds_put_format(ds, "set_nw_dst("IP_FMT")",
+ IP_ARGS(&a->nw_addr.nw_addr));
+ break;
+ case XFLOWAT_SET_NW_TOS:
+ ds_put_format(ds, "set_nw_tos(%"PRIu8")", a->nw_tos.nw_tos);
+ break;
+ case XFLOWAT_SET_TP_SRC:
+ ds_put_format(ds, "set_tp_src(%"PRIu16")", ntohs(a->tp_port.tp_port));
+ break;
+ case XFLOWAT_SET_TP_DST:
+ ds_put_format(ds, "set_tp_dst(%"PRIu16")", ntohs(a->tp_port.tp_port));
+ break;
++ case XFLOWAT_SET_PRIORITY:
++ ds_put_format(ds, "set_priority(0x%"PRIx32")", a->priority.priority);
++ break;
++ case XFLOWAT_POP_PRIORITY:
++ ds_put_cstr(ds, "pop_priority");
++ break;
+ default:
+ ds_put_format(ds, "***bad action 0x%"PRIx16"***", a->type);
+ break;
+ }
+}
+
+void
+format_xflow_actions(struct ds *ds, const union xflow_action *actions,
+ size_t n_actions)
+{
+ size_t i;
+ for (i = 0; i < n_actions; i++) {
+ if (i) {
+ ds_put_char(ds, ',');
+ }
+ format_xflow_action(ds, &actions[i]);
+ }
+ if (!n_actions) {
+ ds_put_cstr(ds, "drop");
+ }
+}
+
+void
+format_xflow_flow_stats(struct ds *ds, const struct xflow_flow_stats *s)
+{
+ ds_put_format(ds, "packets:%llu, bytes:%llu, used:",
+ (unsigned long long int) s->n_packets,
+ (unsigned long long int) s->n_bytes);
+ if (s->used_sec) {
+ long long int used = s->used_sec * 1000 + s->used_nsec / 1000000;
+ ds_put_format(ds, "%.3fs", (time_msec() - used) / 1000.0);
+ } else {
+ ds_put_format(ds, "never");
+ }
+}
+
+void
+format_xflow_flow(struct ds *ds, const struct xflow_flow *f)
+{
+ format_xflow_key(ds, &f->key);
+ ds_put_cstr(ds, ", ");
+ format_xflow_flow_stats(ds, &f->stats);
+ ds_put_cstr(ds, ", actions:");
+ format_xflow_actions(ds, f->actions, f->n_actions);
+}
+\f
+void
+xflow_key_from_flow(struct xflow_key *key, const struct flow *flow)
+{
+ key->tun_id = flow->tun_id;
+ key->nw_src = flow->nw_src;
+ key->nw_dst = flow->nw_dst;
+ key->in_port = ofp_port_to_xflow_port(flow->in_port);
+ if (flow->dl_vlan == htons(OFP_VLAN_NONE)) {
+ key->dl_tci = htons(0);
+ } else {
+ uint16_t vid = flow->dl_vlan & htons(VLAN_VID_MASK);
+ uint16_t pcp = htons((flow->dl_vlan_pcp << VLAN_PCP_SHIFT)
+ & VLAN_PCP_MASK);
+ key->dl_tci = vid | pcp | htons(XFLOW_TCI_PRESENT);
+ }
+ key->dl_type = flow->dl_type;
+ key->tp_src = flow->tp_src;
+ key->tp_dst = flow->tp_dst;
+ memcpy(key->dl_src, flow->dl_src, ETH_ADDR_LEN);
+ memcpy(key->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
+ key->nw_proto = flow->nw_proto;
+ key->nw_tos = flow->nw_tos;
+}
+
+void
+xflow_key_to_flow(const struct xflow_key *key, struct flow *flow)
+{
+ flow->wildcards = 0;
+ flow->priority = 0xffff;
+ flow->tun_id = key->tun_id;
+ flow->nw_src = key->nw_src;
+ flow->nw_dst = key->nw_dst;
+ flow->in_port = xflow_port_to_ofp_port(key->in_port);
+ if (key->dl_tci) {
+ flow->dl_vlan = htons(vlan_tci_to_vid(key->dl_tci));
+ flow->dl_vlan_pcp = vlan_tci_to_pcp(key->dl_tci);
+ } else {
+ flow->dl_vlan = htons(OFP_VLAN_NONE);
+ flow->dl_vlan_pcp = 0;
+ }
+ flow->dl_type = key->dl_type;
+ flow->tp_src = key->tp_src;
+ flow->tp_dst = key->tp_dst;
+ memcpy(flow->dl_src, key->dl_src, ETH_ADDR_LEN);
+ memcpy(flow->dl_dst, key->dl_dst, ETH_ADDR_LEN);
+ flow->nw_proto = key->nw_proto;
+ flow->nw_tos = key->nw_tos;
+}
#include "packets.h"
#include "status.h"
#include "stream-ssl.h"
+ #include "vlog.h"
+#include "wdp.h"
+#include "xfif.h"
- #define THIS_MODULE VLM_discovery
- #include "vlog.h"
+ VLOG_DEFINE_THIS_MODULE(discovery)
struct discovery {
char *dpif_name;
#include "poll-loop.h"
#include "status.h"
#include "timeval.h"
+ #include "vlog.h"
+#include "wdp.h"
- #define THIS_MODULE VLM_in_band
- #include "vlog.h"
+ VLOG_DEFINE_THIS_MODULE(in_band)
/* In-band control allows a single network to be used for OpenFlow
* traffic and other data traffic. Refer to ovs-vswitchd.conf(5) and
#include "sflow_api.h"
#include "socket-util.h"
#include "timeval.h"
+ #include "vlog.h"
+#include "wdp.h"
+#include "xfif.h"
- #define THIS_MODULE VLM_sflow
- #include "vlog.h"
+ VLOG_DEFINE_THIS_MODULE(sflow)
struct ofproto_sflow_port {
struct netdev *netdev; /* Underlying network device, for stats. */
#include "timeval.h"
#include "unixctl.h"
#include "vconn.h"
+ #include "vlog.h"
+#include "wdp.h"
+#include "xfif.h"
#include "xtoxll.h"
- #define THIS_MODULE VLM_ofproto
- #include "vlog.h"
+ VLOG_DEFINE_THIS_MODULE(ofproto)
#include "sflow_api.h"
--- /dev/null
- #include <linux/types.h> /* XXX */
- #include <linux/pkt_sched.h> /* XXX */
-
- #define THIS_MODULE VLM_wdp_xflow
- #include "vlog.h"
+/*
+ * Copyright (c) 2010 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <config.h>
+
+#include "wdp-xflow.h"
+
+#include <errno.h>
+#include <inttypes.h>
+
+#include "coverage.h"
+#include "dhcp.h"
+#include "mac-learning.h"
+#include "netdev.h"
+#include "netflow.h"
+#include "ofp-util.h"
+#include "ofpbuf.h"
+#include "ofproto.h"
+#include "openflow/nicira-ext.h"
+#include "openflow/openflow.h"
+#include "packets.h"
+#include "poll-loop.h"
+#include "port-array.h"
+#include "shash.h"
+#include "stp.h"
+#include "svec.h"
+#include "timeval.h"
+#include "util.h"
+#include "vconn.h"
+#include "wdp-provider.h"
+#include "xfif.h"
+#include "xflow-util.h"
++#include "vlog.h"
+#include "xtoxll.h"
+
- add_controller_action(struct xflow_actions *actions,
- const struct ofp_action_output *oao)
++VLOG_DEFINE_THIS_MODULE(wdp_xflow)
+
+enum {
+ TABLEID_HASH = 0,
+ TABLEID_CLASSIFIER = 1
+};
+
+static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+\f
+/* Maximum numbers of rules. */
+#define WX_MAX_WILD 65536 /* Wildcarded rules. */
+#define WX_MAX_EXACT 1048576 /* Exact-match rules. */
+
+struct wx {
+ struct list list_node;
+ struct wdp wdp;
+ struct xfif *xfif;
+ struct classifier cls;
+ struct netdev_monitor *netdev_monitor;
+ struct port_array ports; /* Index is xflow port nr;
+ * wdp_port->opp.port_no is OFP port nr. */
+ struct shash port_by_name;
+ long long int next_expiration;
+
+ /* Rules that might need to be revalidated. */
+ bool need_revalidate; /* Revalidate all subrules? */
+ bool revalidate_all; /* Revalidate all subrules and other rules? */
+ struct tag_set revalidate_set; /* Tag set of (sub)rules to revalidate. */
+
+ /* Hooks for ovs-vswitchd. */
+ const struct ofhooks *ofhooks;
+ void *aux;
+
+ /* Used by default ofhooks. */
+ struct mac_learning *ml;
+};
+
+static const struct ofhooks default_ofhooks;
+
+static struct list all_wx = LIST_INITIALIZER(&all_wx);
+
+static int wx_port_init(struct wx *);
+static void wx_port_process_change(struct wx *wx, int error, char *devname,
+ wdp_port_poll_cb_func *cb, void *aux);
+static void wx_port_refresh_groups(struct wx *);
+
+enum {
+ WX_GROUP_FLOOD = 0,
+ WX_GROUP_ALL = 1
+};
+
+static struct wx *
+wx_cast(const struct wdp *wdp)
+{
+ return CONTAINER_OF(wdp, struct wx, wdp);
+}
+
+static int
+wx_xlate_actions(struct wx *, const union ofp_action *, size_t n,
+ const flow_t *flow, const struct ofpbuf *packet,
+ tag_type *tags, struct xflow_actions *out,
+ bool *may_set_up_flow);
+\f
+struct wx_rule {
+ struct wdp_rule wr;
+
+ uint64_t packet_count; /* Number of packets received. */
+ uint64_t byte_count; /* Number of bytes received. */
+ uint64_t accounted_bytes; /* Number of bytes passed to account_cb. */
+ long long int used; /* Last-used time (0 if never used). */
+ tag_type tags; /* Tags (set only by hooks). */
+
+ /* If 'super' is non-NULL, this rule is a subrule, that is, it is an
+ * exact-match rule (having cr.wc.wildcards of 0) generated from the
+ * wildcard rule 'super'. In this case, 'list' is an element of the
+ * super-rule's list.
+ *
+ * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of
+ * a list of subrules. A super-rule with no wildcards (where
+ * cr.wc.wildcards is 0) will never have any subrules. */
+ struct wx_rule *super;
+ struct list list;
+
+ /* Datapath actions.
+ *
+ * A super-rule with wildcard fields never has xflow actions (since the
+ * datapath only supports exact-match flows). */
+ bool installed; /* Installed in datapath? */
+ bool may_install; /* True ordinarily; false if actions must
+ * be reassessed for every packet. */
+ int n_xflow_actions;
+ union xflow_action *xflow_actions;
+};
+
+static void wx_rule_destroy(struct wx *, struct wx_rule *);
+static void wx_rule_update_actions(struct wx *, struct wx_rule *);
+static void wx_rule_execute(struct wx *, struct wx_rule *,
+ struct ofpbuf *packet, const flow_t *);
+static bool wx_rule_make_actions(struct wx *, struct wx_rule *,
+ const struct ofpbuf *packet);
+static void wx_rule_install(struct wx *, struct wx_rule *,
+ struct wx_rule *displaced_rule);
+
+static struct wx_rule *
+wx_rule_cast(const struct cls_rule *cls_rule)
+{
+ return cls_rule ? CONTAINER_OF(cls_rule, struct wx_rule, wr.cr) : NULL;
+}
+
+/* Returns true if 'rule' is merely an implementation detail that should be
+ * hidden from the client. */
+static inline bool
+wx_rule_is_hidden(const struct wx_rule *rule)
+{
+ return rule->super != NULL;
+}
+
+static void
+wx_rule_free(struct wx_rule *rule)
+{
+ wdp_rule_uninit(&rule->wr);
+ free(rule->xflow_actions);
+ free(rule);
+}
+
+static void
+wx_rule_account(struct wx *wx OVS_UNUSED, struct wx_rule *rule OVS_UNUSED,
+ uint64_t extra_bytes OVS_UNUSED)
+{
+ /* XXX call account_cb hook */
+}
+
+static void
+wx_rule_post_uninstall(struct wx *wx, struct wx_rule *rule)
+{
+ struct wx_rule *super = rule->super;
+
+ wx_rule_account(wx, rule, 0);
+
+ /* XXX netflow expiration */
+
+ if (super) {
+ super->packet_count += rule->packet_count;
+ super->byte_count += rule->byte_count;
+
+ /* Reset counters to prevent double counting if the rule ever gets
+ * reinstalled. */
+ rule->packet_count = 0;
+ rule->byte_count = 0;
+ rule->accounted_bytes = 0;
+
+ //XXX netflow_flow_clear(&rule->nf_flow);
+ }
+}
+
+static long long int
+xflow_flow_stats_to_msec(const struct xflow_flow_stats *stats)
+{
+ return (stats->used_sec
+ ? stats->used_sec * 1000 + stats->used_nsec / 1000000
+ : 0);
+}
+
+static void
+wx_rule_update_time(struct wx *wx OVS_UNUSED, struct wx_rule *rule,
+ const struct xflow_flow_stats *stats)
+{
+ long long int used = xflow_flow_stats_to_msec(stats);
+ if (used > rule->used) {
+ rule->used = used;
+ if (rule->super && used > rule->super->used) {
+ rule->super->used = used;
+ }
+ //XXX netflow_flow_update_time(ofproto->netflow, &rule->nf_flow, used);
+ }
+}
+
+static void
+wx_rule_update_stats(struct wx *wx, struct wx_rule *rule,
+ const struct xflow_flow_stats *stats)
+{
+ if (stats->n_packets) {
+ wx_rule_update_time(wx, rule, stats);
+ rule->packet_count += stats->n_packets;
+ rule->byte_count += stats->n_bytes;
+ /* XXX netflow_flow_update_flags(&rule->nf_flow, stats->ip_tos,
+ stats->tcp_flags); */
+ }
+}
+
+static void
+wx_rule_uninstall(struct wx *wx, struct wx_rule *rule)
+{
+ assert(!rule->wr.cr.flow.wildcards);
+ if (rule->installed) {
+ struct xflow_flow xflow_flow;
+
+ xflow_key_from_flow(&xflow_flow.key, &rule->wr.cr.flow);
+ xflow_flow.actions = NULL;
+ xflow_flow.n_actions = 0;
+ xflow_flow.flags = 0;
+ if (!xfif_flow_del(wx->xfif, &xflow_flow)) {
+ wx_rule_update_stats(wx, rule, &xflow_flow.stats);
+ }
+ rule->installed = false;
+
+ wx_rule_post_uninstall(wx, rule);
+ }
+}
+
+#if 0
+static bool
+is_controller_rule(struct wx_rule *rule)
+{
+ /* If the only action is send to the controller then don't report
+ * NetFlow expiration messages since it is just part of the control
+ * logic for the network and not real traffic. */
+
+ return (rule
+ && rule->super
+ && rule->super->n_actions == 1
+ && action_outputs_to_port(&rule->super->actions[0],
+ htons(OFPP_CONTROLLER)));
+}
+#endif
+
+static void
+wx_rule_remove(struct wx *wx, struct wx_rule *rule)
+{
+ if (rule->wr.cr.flow.wildcards) {
+ COVERAGE_INC(wx_del_wc_flow);
+ wx->need_revalidate = true;
+ } else {
+ wx_rule_uninstall(wx, rule);
+ }
+ classifier_remove(&wx->cls, &rule->wr.cr);
+ wx_rule_destroy(wx, rule);
+}
+
+static bool
+wx_rule_revalidate(struct wx *wx, struct wx_rule *rule)
+{
+ const flow_t *flow = &rule->wr.cr.flow;
+
+ COVERAGE_INC(wx_rule_revalidate);
+ if (rule->super) {
+ struct wx_rule *super;
+ super = wx_rule_cast(classifier_lookup_wild(&wx->cls, flow));
+ if (!super) {
+ wx_rule_remove(wx, rule);
+ return false;
+ } else if (super != rule->super) {
+ COVERAGE_INC(wx_revalidate_moved);
+ list_remove(&rule->list);
+ list_push_back(&super->list, &rule->list);
+ rule->super = super;
+ rule->wr.hard_timeout = super->wr.hard_timeout;
+ rule->wr.idle_timeout = super->wr.idle_timeout;
+ rule->wr.created = super->wr.created;
+ rule->used = 0;
+ }
+ }
+
+ wx_rule_update_actions(wx, rule);
+ return true;
+}
+
+/* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
+ * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
+ * through all of its subrules and revalidates them, destroying any that no
+ * longer has a super-rule (which is probably all of them).
+ *
+ * Before calling this function, the caller must make have removed 'rule' from
+ * the classifier. If 'rule' is an exact-match rule, the caller is also
+ * responsible for ensuring that it has been uninstalled from the datapath. */
+static void
+wx_rule_destroy(struct wx *wx, struct wx_rule *rule)
+{
+ if (!rule->super) {
+ struct wx_rule *subrule, *next;
+ LIST_FOR_EACH_SAFE (subrule, next, struct wx_rule, list, &rule->list) {
+ wx_rule_revalidate(wx, subrule);
+ }
+ } else {
+ list_remove(&rule->list);
+ }
+ wx_rule_free(rule);
+}
+
+#if 0
+static bool
+wx_rule_has_out_port(const struct wx_rule *rule, uint16_t out_port)
+{
+ const union ofp_action *oa;
+ struct actions_iterator i;
+
+ if (out_port == htons(OFPP_NONE)) {
+ return true;
+ }
+ for (oa = actions_first(&i, rule->wr.actions,
+ rule->wr.n_actions);
+ oa;
+ oa = actions_next(&i)) {
+ if (oa->type == htons(OFPAT_OUTPUT) && oa->output.port == out_port) {
+ return true;
+ }
+ }
+ return false;
+}
+#endif
+
+/* Caller is responsible for initializing the 'cr' and ofp_table_id members of
+ * the returned rule. */
+static struct wx_rule *
+wx_rule_create(struct wx_rule *super,
+ const union ofp_action *actions, size_t n_actions,
+ uint16_t idle_timeout, uint16_t hard_timeout)
+{
+ struct wx_rule *rule = xzalloc(sizeof *rule);
+ wdp_rule_init(&rule->wr, actions, n_actions);
+ rule->wr.idle_timeout = idle_timeout;
+ rule->wr.hard_timeout = hard_timeout;
+ rule->used = rule->wr.created;
+ rule->super = super;
+ if (super) {
+ list_push_back(&super->list, &rule->list);
+ } else {
+ list_init(&rule->list);
+ }
+#if 0
+ netflow_flow_clear(&rule->nf_flow);
+ netflow_flow_update_time(ofproto->netflow, &rule->nf_flow, rule->created);
+#endif
+
+ return rule;
+}
+
+/* Executes the actions indicated by 'rule' on 'packet', which is in flow
+ * 'flow' and is considered to have arrived on xflow port 'in_port'.
+ *
+ * The flow that 'packet' actually contains does not need to actually match
+ * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
+ * the packet and byte counters for 'rule' will be credited for the packet sent
+ * out whether or not the packet actually matches 'rule'.
+ *
+ * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
+ * the caller must already have accurately composed xflow actions for it given
+ * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
+ * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
+ * function will compose a set of xflow actions based on 'rule''s OpenFlow
+ * actions and apply them to 'packet'. */
+static void
+wx_rule_execute(struct wx *wx, struct wx_rule *rule,
+ struct ofpbuf *packet, const flow_t *flow)
+{
+ const union xflow_action *actions;
+ size_t n_actions;
+ struct xflow_actions a;
+
+ /* Grab or compose the xflow actions.
+ *
+ * The special case for an exact-match 'rule' where 'flow' is not the
+ * rule's flow is important to avoid, e.g., sending a packet out its input
+ * port simply because the xflow actions were composed for the wrong
+ * scenario. */
+ if (rule->wr.cr.flow.wildcards
+ || !flow_equal(flow, &rule->wr.cr.flow))
+ {
+ struct wx_rule *super = rule->super ? rule->super : rule;
+ if (wx_xlate_actions(wx, super->wr.actions, super->wr.n_actions, flow,
+ packet, NULL, &a, NULL)) {
+ return;
+ }
+ actions = a.actions;
+ n_actions = a.n_actions;
+ } else {
+ actions = rule->xflow_actions;
+ n_actions = rule->n_xflow_actions;
+ }
+
+ /* Execute the xflow actions. */
+ if (!xfif_execute(wx->xfif, flow->in_port,
+ actions, n_actions, packet)) {
+ struct xflow_flow_stats stats;
+ flow_extract_stats(flow, packet, &stats);
+ wx_rule_update_stats(wx, rule, &stats);
+ rule->used = time_msec();
+ //XXX netflow_flow_update_time(wx->netflow, &rule->nf_flow, rule->used);
+ }
+}
+
+static void
+wx_rule_insert(struct wx *wx, struct wx_rule *rule, struct ofpbuf *packet,
+ uint16_t in_port)
+{
+ struct wx_rule *displaced_rule;
+
+ /* Insert the rule in the classifier. */
+ displaced_rule = wx_rule_cast(classifier_insert(&wx->cls, &rule->wr.cr));
+ if (!rule->wr.cr.flow.wildcards) {
+ wx_rule_make_actions(wx, rule, packet);
+ }
+
+ /* Send the packet and credit it to the rule. */
+ if (packet) {
+ flow_t flow;
+ flow_extract(packet, 0, in_port, &flow);
+ wx_rule_execute(wx, rule, packet, &flow);
+ }
+
+ /* Install the rule in the datapath only after sending the packet, to
+ * avoid packet reordering. */
+ if (rule->wr.cr.flow.wildcards) {
+ COVERAGE_INC(wx_add_wc_flow);
+ wx->need_revalidate = true;
+ } else {
+ wx_rule_install(wx, rule, displaced_rule);
+ }
+
+ /* Free the rule that was displaced, if any. */
+ if (displaced_rule) {
+ rule->wr.client_data = displaced_rule->wr.client_data;
+ wx_rule_destroy(wx, displaced_rule);
+ }
+}
+
+static struct wx_rule *
+wx_rule_create_subrule(struct wx *wx, struct wx_rule *rule, const flow_t *flow)
+{
+ struct wx_rule *subrule;
+
+ subrule = wx_rule_create(rule, NULL, 0,
+ rule->wr.idle_timeout,
+ rule->wr.hard_timeout);
+ /* Subrules aren't really in any OpenFlow table, so don't bother with
+ * subrule->wr.ofp_table_id. */
+ COVERAGE_INC(wx_subrule_create);
+ cls_rule_from_flow(flow, &subrule->wr.cr);
+ classifier_insert_exact(&wx->cls, &subrule->wr.cr);
+
+ return subrule;
+}
+
+/* Returns true if the actions changed, false otherwise. */
+static bool
+wx_rule_make_actions(struct wx *wx, struct wx_rule *rule,
+ const struct ofpbuf *packet)
+{
+ const struct wx_rule *super;
+ struct xflow_actions a;
+ size_t actions_len;
+
+ assert(!rule->wr.cr.flow.wildcards);
+
+ super = rule->super ? rule->super : rule;
+ wx_xlate_actions(wx, super->wr.actions, super->wr.n_actions,
+ &rule->wr.cr.flow, packet,
+ &rule->tags, &a, &rule->may_install);
+
+ actions_len = a.n_actions * sizeof *a.actions;
+ if (rule->n_xflow_actions != a.n_actions
+ || memcmp(rule->xflow_actions, a.actions, actions_len)) {
+ COVERAGE_INC(wx_xflow_unchanged);
+ free(rule->xflow_actions);
+ rule->n_xflow_actions = a.n_actions;
+ rule->xflow_actions = xmemdup(a.actions, actions_len);
+ return true;
+ } else {
+ return false;
+ }
+}
+
+static int
+do_put_flow(struct wx *wx, struct wx_rule *rule, int flags,
+ struct xflow_flow_put *put)
+{
+ memset(&put->flow.stats, 0, sizeof put->flow.stats);
+ xflow_key_from_flow(&put->flow.key, &rule->wr.cr.flow);
+ put->flow.actions = rule->xflow_actions;
+ put->flow.n_actions = rule->n_xflow_actions;
+ put->flow.flags = 0;
+ put->flags = flags;
+ return xfif_flow_put(wx->xfif, put);
+}
+
+static void
+wx_rule_install(struct wx *wx, struct wx_rule *rule, struct wx_rule *displaced_rule)
+{
+ assert(!rule->wr.cr.flow.wildcards);
+
+ if (rule->may_install) {
+ struct xflow_flow_put put;
+ if (!do_put_flow(wx, rule,
+ XFLOWPF_CREATE | XFLOWPF_MODIFY | XFLOWPF_ZERO_STATS,
+ &put)) {
+ rule->installed = true;
+ if (displaced_rule) {
+ wx_rule_update_stats(wx, displaced_rule, &put.flow.stats);
+ wx_rule_post_uninstall(wx, displaced_rule);
+ }
+ }
+ } else if (displaced_rule) {
+ wx_rule_uninstall(wx, displaced_rule);
+ }
+}
+
+static void
+wx_rule_reinstall(struct wx *wx, struct wx_rule *rule)
+{
+ if (rule->installed) {
+ struct xflow_flow_put put;
+ COVERAGE_INC(wx_dp_missed);
+ do_put_flow(wx, rule, XFLOWPF_CREATE | XFLOWPF_MODIFY, &put);
+ } else {
+ wx_rule_install(wx, rule, NULL);
+ }
+}
+
+static void
+wx_rule_update_actions(struct wx *wx, struct wx_rule *rule)
+{
+ bool actions_changed;
+#if 0
+ uint16_t new_out_iface, old_out_iface;
+
+ old_out_iface = rule->nf_flow.output_iface;
+#endif
+ actions_changed = wx_rule_make_actions(wx, rule, NULL);
+
+ if (rule->may_install) {
+ if (rule->installed) {
+ if (actions_changed) {
+ struct xflow_flow_put put;
+ do_put_flow(wx, rule, XFLOWPF_CREATE | XFLOWPF_MODIFY
+ | XFLOWPF_ZERO_STATS, &put);
+ wx_rule_update_stats(wx, rule, &put.flow.stats);
+#if 0
+ /* Temporarily set the old output iface so that NetFlow
+ * messages have the correct output interface for the old
+ * stats. */
+ new_out_iface = rule->nf_flow.output_iface;
+ rule->nf_flow.output_iface = old_out_iface;
+#endif
+ wx_rule_post_uninstall(wx, rule);
+ //rule->nf_flow.output_iface = new_out_iface;
+ }
+ } else {
+ wx_rule_install(wx, rule, NULL);
+ }
+ } else {
+ wx_rule_uninstall(wx, rule);
+ }
+}
+\f
+static void
+add_output_group_action(struct xflow_actions *actions, uint16_t group,
+ uint16_t *nf_output_iface)
+{
+ xflow_actions_add(actions, XFLOWAT_OUTPUT_GROUP)->output_group.group = group;
+
+ if (group == WX_GROUP_ALL || group == WX_GROUP_FLOOD) {
+ *nf_output_iface = NF_OUT_FLOOD;
+ }
+}
+
+static void
- a->controller.arg = ntohs(oao->max_len);
++add_controller_action(struct xflow_actions *actions, uint16_t max_len)
+{
+ union xflow_action *a = xflow_actions_add(actions, XFLOWAT_CONTROLLER);
- xlate_output_action(struct wx_xlate_ctx *ctx,
- const struct ofp_action_output *oao)
++ a->controller.arg = max_len;
+}
+
+struct wx_xlate_ctx {
+ /* Input. */
+ flow_t flow; /* Flow to which these actions correspond. */
+ int recurse; /* Recursion level, via xlate_table_action. */
+ struct wx *wx;
+ const struct ofpbuf *packet; /* The packet corresponding to 'flow', or a
+ * null pointer if we are revalidating
+ * without a packet to refer to. */
+
+ /* Output. */
+ struct xflow_actions *out; /* Datapath actions. */
+ tag_type *tags; /* Tags associated with OFPP_NORMAL actions. */
+ bool may_set_up_flow; /* True ordinarily; false if the actions must
+ * be reassessed for every packet. */
+ uint16_t nf_output_iface; /* Output interface index for NetFlow. */
+};
+
+static void do_xlate_actions(const union ofp_action *in, size_t n_in,
+ struct wx_xlate_ctx *ctx);
+
+static void
+add_output_action(struct wx_xlate_ctx *ctx, uint16_t port)
+{
+ const struct wdp_port *wdp_port = port_array_get(&ctx->wx->ports, port);
+
+ if (wdp_port) {
+ if (wdp_port->opp.config & OFPPC_NO_FWD) {
+ /* Forwarding disabled on port. */
+ return;
+ }
+ } else {
+ /*
+ * We don't have an ofport record for this port, but it doesn't hurt to
+ * allow forwarding to it anyhow. Maybe such a port will appear later
+ * and we're pre-populating the flow table.
+ */
+ }
+
+ xflow_actions_add(ctx->out, XFLOWAT_OUTPUT)->output.port = port;
+ //ctx->nf_output_iface = port;
+}
+
+static struct wx_rule *
+wx_rule_lookup_valid(struct wx *wx, const flow_t *flow)
+{
+ struct wx_rule *rule = wx_rule_cast(classifier_lookup(&wx->cls, flow));
+
+ /* The rule we found might not be valid, since we could be in need of
+ * revalidation. If it is not valid, don't return it. */
+ if (rule
+ && rule->super
+ && wx->need_revalidate
+ && !wx_rule_revalidate(wx, rule)) {
+ COVERAGE_INC(wx_invalidated);
+ return NULL;
+ }
+
+ return rule;
+}
+
+static void
+xlate_table_action(struct wx_xlate_ctx *ctx, uint16_t in_port)
+{
+ if (!ctx->recurse) {
+ uint16_t old_in_port;
+ struct wx_rule *rule;
+
+ /* Look up a flow with 'in_port' as the input port. Then restore the
+ * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
+ * have surprising behavior). */
+ old_in_port = ctx->flow.in_port;
+ ctx->flow.in_port = in_port;
+ rule = wx_rule_lookup_valid(ctx->wx, &ctx->flow);
+ ctx->flow.in_port = old_in_port;
+
+ if (rule) {
+ if (rule->super) {
+ rule = rule->super;
+ }
+
+ ctx->recurse++;
+ do_xlate_actions(rule->wr.actions, rule->wr.n_actions, ctx);
+ ctx->recurse--;
+ }
+ }
+}
+
+static void
- switch (ntohs(oao->port)) {
++xlate_output_action__(struct wx_xlate_ctx *ctx,
++ uint16_t port, uint16_t max_len)
+{
+ uint16_t xflow_port;
+ uint16_t prev_nf_output_iface = ctx->nf_output_iface;
+
+ ctx->nf_output_iface = NF_OUT_DROP;
+
- add_controller_action(ctx->out, oao);
++ switch (port) {
+ case OFPP_IN_PORT:
+ add_output_action(ctx, ctx->flow.in_port);
+ break;
+ case OFPP_TABLE:
+ xlate_table_action(ctx, ctx->flow.in_port);
+ break;
+ case OFPP_NORMAL:
+ if (!ctx->wx->ofhooks->normal_cb(&ctx->flow, ctx->packet,
+ ctx->out, ctx->tags,
+ &ctx->nf_output_iface,
+ ctx->wx->aux)) {
+ COVERAGE_INC(wx_uninstallable);
+ ctx->may_set_up_flow = false;
+ }
+ break;
+
+ case OFPP_FLOOD:
+ add_output_group_action(ctx->out, WX_GROUP_FLOOD,
+ &ctx->nf_output_iface);
+ break;
+ case OFPP_ALL:
+ add_output_group_action(ctx->out, WX_GROUP_ALL, &ctx->nf_output_iface);
+ break;
+ case OFPP_CONTROLLER:
- xflow_port = ofp_port_to_xflow_port(ntohs(oao->port));
++ add_controller_action(ctx->out, max_len);
+ break;
+ case OFPP_LOCAL:
+ add_output_action(ctx, XFLOWP_LOCAL);
+ break;
+ default:
- = TC_H_MAKE(1, ntohl(oae->queue_id)); /* XXX */
++ xflow_port = ofp_port_to_xflow_port(port);
+ if (xflow_port != ctx->flow.in_port) {
+ add_output_action(ctx, xflow_port);
+ }
+ break;
+ }
+
+ if (prev_nf_output_iface == NF_OUT_FLOOD) {
+ ctx->nf_output_iface = NF_OUT_FLOOD;
+ } else if (ctx->nf_output_iface == NF_OUT_DROP) {
+ ctx->nf_output_iface = prev_nf_output_iface;
+ } else if (prev_nf_output_iface != NF_OUT_DROP &&
+ ctx->nf_output_iface != NF_OUT_FLOOD) {
+ ctx->nf_output_iface = NF_OUT_MULTI;
+ }
+}
+
++static void
++xlate_output_action(struct action_xlate_ctx *ctx,
++ const struct ofp_action_output *oao)
++{
++ xlate_output_action__(ctx, ntohs(oao->port), ntohs(oao->max_len));
++}
++
+/* If the final xflow action in 'ctx' is "pop priority", drop it, as an
+ * optimization, because we're going to add another action that sets the
+ * priority immediately after, or because there are no actions following the
+ * pop. */
+static void
+remove_pop_action(struct wx_xlate_ctx *ctx)
+{
+ size_t n = ctx->out->n_actions;
+ if (n > 0 && ctx->out->actions[n - 1].type == XFLOWAT_POP_PRIORITY) {
+ ctx->out->n_actions--;
+ }
+}
+
+static void
+xlate_enqueue_action(struct wx_xlate_ctx *ctx,
+ const struct ofp_action_enqueue *oae)
+{
+ uint16_t ofp_port, xflow_port;
++ uint32_t priority;
++ int error;
++
++ error = xfif_queue_to_priority(ctx->wx->xfif, ntohl(oae->queue_id),
++ &priority);
++ if (error) {
++ /* Fall back to ordinary output action. */
++ xlate_output_action__(ctx, ntohs(oae->port), 0);
++ return;
++ }
+
+ /* Figure out xflow output port. */
+ ofp_port = ntohs(oae->port);
+ if (ofp_port != OFPP_IN_PORT) {
+ xflow_port = ofp_port_to_xflow_port(ofp_port);
+ } else {
+ xflow_port = ctx->flow.in_port;
+ }
+
+ /* Add xflow actions. */
+ remove_pop_action(ctx);
+ xflow_actions_add(ctx->out, XFLOWAT_SET_PRIORITY)->priority.priority
++ = priority;
+ add_output_action(ctx, xflow_port);
+ xflow_actions_add(ctx->out, XFLOWAT_POP_PRIORITY);
+
+ /* Update NetFlow output port. */
+ if (ctx->nf_output_iface == NF_OUT_DROP) {
+ ctx->nf_output_iface = xflow_port;
+ } else if (ctx->nf_output_iface != NF_OUT_FLOOD) {
+ ctx->nf_output_iface = NF_OUT_MULTI;
+ }
+}
+
+static void
+xlate_nicira_action(struct wx_xlate_ctx *ctx,
+ const struct nx_action_header *nah)
+{
+ const struct nx_action_resubmit *nar;
+ const struct nx_action_set_tunnel *nast;
+ union xflow_action *oa;
+ int subtype = ntohs(nah->subtype);
+
+ assert(nah->vendor == htonl(NX_VENDOR_ID));
+ switch (subtype) {
+ case NXAST_RESUBMIT:
+ nar = (const struct nx_action_resubmit *) nah;
+ xlate_table_action(ctx, ofp_port_to_xflow_port(ntohs(nar->in_port)));
+ break;
+
+ case NXAST_SET_TUNNEL:
+ nast = (const struct nx_action_set_tunnel *) nah;
+ oa = xflow_actions_add(ctx->out, XFLOWAT_SET_TUNNEL);
+ ctx->flow.tun_id = oa->tunnel.tun_id = nast->tun_id;
+ break;
+
+ /* If you add a new action here that modifies flow data, don't forget to
+ * update the flow key in ctx->flow at the same time. */
+
+ default:
+ VLOG_DBG_RL(&rl, "unknown Nicira action type %"PRIu16, subtype);
+ break;
+ }
+}
+
+static void
+do_xlate_actions(const union ofp_action *in, size_t n_in,
+ struct wx_xlate_ctx *ctx)
+{
+ struct actions_iterator iter;
+ const union ofp_action *ia;
+ const struct wdp_port *port;
+
+ port = port_array_get(&ctx->wx->ports, ctx->flow.in_port);
+ if (port && port->opp.config & (OFPPC_NO_RECV | OFPPC_NO_RECV_STP) &&
+ port->opp.config & (eth_addr_equals(ctx->flow.dl_dst, stp_eth_addr)
+ ? OFPPC_NO_RECV_STP : OFPPC_NO_RECV)) {
+ /* Drop this flow. */
+ return;
+ }
+
+ for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) {
+ uint16_t type = ntohs(ia->type);
+ union xflow_action *oa;
+
+ switch (type) {
+ case OFPAT_OUTPUT:
+ xlate_output_action(ctx, &ia->output);
+ break;
+
+ case OFPAT_SET_VLAN_VID:
+ oa = xflow_actions_add(ctx->out, XFLOWAT_SET_DL_TCI);
+ oa->dl_tci.tci = ia->vlan_vid.vlan_vid & htons(VLAN_VID_MASK);
+ oa->dl_tci.mask = htons(VLAN_VID_MASK);
+ ctx->flow.dl_vlan = ia->vlan_vid.vlan_vid;
+ break;
+
+ case OFPAT_SET_VLAN_PCP:
+ oa = xflow_actions_add(ctx->out, XFLOWAT_SET_DL_TCI);
+ oa->dl_tci.tci = htons((ia->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT)
+ & VLAN_PCP_MASK);
+ oa->dl_tci.mask = htons(VLAN_PCP_MASK);
+
+ if (ctx->flow.dl_vlan == htons(OFP_VLAN_NONE)) {
+ ctx->flow.dl_vlan = htons(0);
+ }
+ ctx->flow.dl_vlan_pcp = ia->vlan_pcp.vlan_pcp;
+ break;
+
+ case OFPAT_STRIP_VLAN:
+ xflow_actions_add(ctx->out, XFLOWAT_STRIP_VLAN);
+ ctx->flow.dl_vlan = htons(OFP_VLAN_NONE);
+ ctx->flow.dl_vlan_pcp = 0;
+ break;
+
+ case OFPAT_SET_DL_SRC:
+ oa = xflow_actions_add(ctx->out, XFLOWAT_SET_DL_SRC);
+ memcpy(oa->dl_addr.dl_addr,
+ ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
+ memcpy(ctx->flow.dl_src,
+ ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
+ break;
+
+ case OFPAT_SET_DL_DST:
+ oa = xflow_actions_add(ctx->out, XFLOWAT_SET_DL_DST);
+ memcpy(oa->dl_addr.dl_addr,
+ ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
+ memcpy(ctx->flow.dl_dst,
+ ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
+ break;
+
+ case OFPAT_SET_NW_SRC:
+ oa = xflow_actions_add(ctx->out, XFLOWAT_SET_NW_SRC);
+ ctx->flow.nw_src = oa->nw_addr.nw_addr = ia->nw_addr.nw_addr;
+ break;
+
+ case OFPAT_SET_NW_DST:
+ oa = xflow_actions_add(ctx->out, XFLOWAT_SET_NW_DST);
+ ctx->flow.nw_dst = oa->nw_addr.nw_addr = ia->nw_addr.nw_addr;
+ break;
+
+ case OFPAT_SET_NW_TOS:
+ oa = xflow_actions_add(ctx->out, XFLOWAT_SET_NW_TOS);
+ ctx->flow.nw_tos = oa->nw_tos.nw_tos = ia->nw_tos.nw_tos;
+ break;
+
+ case OFPAT_SET_TP_SRC:
+ oa = xflow_actions_add(ctx->out, XFLOWAT_SET_TP_SRC);
+ ctx->flow.tp_src = oa->tp_port.tp_port = ia->tp_port.tp_port;
+ break;
+
+ case OFPAT_SET_TP_DST:
+ oa = xflow_actions_add(ctx->out, XFLOWAT_SET_TP_DST);
+ ctx->flow.tp_dst = oa->tp_port.tp_port = ia->tp_port.tp_port;
+ break;
+
+ case OFPAT_ENQUEUE:
+ xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia);
+ break;
+
+ case OFPAT_VENDOR:
+ xlate_nicira_action(ctx, (const struct nx_action_header *) ia);
+ break;
+
+ default:
+ VLOG_DBG_RL(&rl, "unknown action type %"PRIu16, type);
+ break;
+ }
+ }
+}
+
+/* Returns true if 'flow' and 'actions' may be set up as a flow in the kernel.
+ * This is true most of the time, but we don't allow flows that would prevent
+ * DHCP replies from being seen by the local port to be set up in the
+ * kernel.
+ *
+ * We only need this, strictly speaking, when in-band control is turned on. */
+static bool
+wx_may_set_up(const flow_t *flow, const struct xflow_actions *actions)
+{
+ if (flow->dl_type == htons(ETH_TYPE_IP)
+ && flow->nw_proto == IP_TYPE_UDP
+ && flow->tp_src == htons(DHCP_SERVER_PORT)
+ && flow->tp_dst == htons(DHCP_CLIENT_PORT)) {
+ int i;
+
+ for (i = 0; i < actions->n_actions; i++) {
+ const struct xflow_action_output *oao = &actions->actions[i].output;
+ if (oao->type == XFLOWAT_OUTPUT && oao->port == XFLOWP_LOCAL) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ return true;
+}
+
+static int
+wx_xlate_actions(struct wx *wx, const union ofp_action *in, size_t n_in,
+ const flow_t *flow, const struct ofpbuf *packet,
+ tag_type *tags, struct xflow_actions *out,
+ bool *may_set_up_flow)
+{
+ tag_type no_tags = 0;
+ struct wx_xlate_ctx ctx;
+ COVERAGE_INC(wx_ofp2xflow);
+ xflow_actions_init(out);
+ ctx.flow = *flow;
+ ctx.recurse = 0;
+ ctx.wx = wx;
+ ctx.packet = packet;
+ ctx.out = out;
+ ctx.tags = tags ? tags : &no_tags;
+ ctx.may_set_up_flow = true;
+ ctx.nf_output_iface = NF_OUT_DROP;
+ do_xlate_actions(in, n_in, &ctx);
+ remove_pop_action(&ctx);
+
+ if (may_set_up_flow) {
+ *may_set_up_flow = ctx.may_set_up_flow && wx_may_set_up(flow, out);
+ }
+#if 0
+ if (nf_output_iface) {
+ *nf_output_iface = ctx.nf_output_iface;
+ }
+#endif
+ if (xflow_actions_overflow(out)) {
+ xflow_actions_init(out);
+ return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_TOO_MANY);
+ }
+ return 0;
+}
+\f
+static void
+update_used(struct wx *wx)
+{
+ struct xflow_flow *flows;
+ size_t n_flows;
+ size_t i;
+ int error;
+
+ error = xfif_flow_list_all(wx->xfif, &flows, &n_flows);
+ if (error) {
+ return;
+ }
+
+ for (i = 0; i < n_flows; i++) {
+ struct xflow_flow *f = &flows[i];
+ struct wx_rule *rule;
+ flow_t flow;
+
+ xflow_key_to_flow(&f->key, &flow);
+ rule = wx_rule_cast(classifier_find_rule_exactly(&wx->cls, &flow));
+ if (!rule || !rule->installed) {
+ COVERAGE_INC(wx_unexpected_rule);
+ xfif_flow_del(wx->xfif, f);
+ continue;
+ }
+
+ wx_rule_update_time(wx, rule, &f->stats);
+ wx_rule_account(wx, rule, f->stats.n_bytes);
+ }
+ free(flows);
+}
+
+static void
+uninstall_idle_flow(struct wx *wx, struct wx_rule *rule)
+{
+ assert(rule->installed);
+ assert(!rule->wr.cr.flow.wildcards);
+
+ if (rule->super) {
+ wx_rule_remove(wx, rule);
+ } else {
+ wx_rule_uninstall(wx, rule);
+ }
+}
+
+static void
+expire_rule(struct cls_rule *cls_rule, void *wx_)
+{
+ struct wx *wx = wx_;
+ struct wx_rule *rule = wx_rule_cast(cls_rule);
+ long long int hard_expire, idle_expire, expire, now;
+
+ hard_expire = (rule->wr.hard_timeout
+ ? rule->wr.created + rule->wr.hard_timeout * 1000
+ : LLONG_MAX);
+ idle_expire = (rule->wr.idle_timeout
+ && (rule->super || list_is_empty(&rule->list))
+ ? rule->used + rule->wr.idle_timeout * 1000
+ : LLONG_MAX);
+ expire = MIN(hard_expire, idle_expire);
+
+ now = time_msec();
+ if (now < expire) {
+ if (rule->installed && now >= rule->used + 5000) {
+ uninstall_idle_flow(wx, rule);
+ } else if (!rule->wr.cr.flow.wildcards) {
+ //XXX active_timeout(wx, rule);
+ }
+
+ return;
+ }
+
+ COVERAGE_INC(wx_expired);
+
+ /* Update stats. This code will be a no-op if the rule expired
+ * due to an idle timeout. */
+ if (rule->wr.cr.flow.wildcards) {
+ struct wx_rule *subrule, *next;
+ LIST_FOR_EACH_SAFE (subrule, next, struct wx_rule, list, &rule->list) {
+ wx_rule_remove(wx, subrule);
+ }
+ } else {
+ wx_rule_uninstall(wx, rule);
+ }
+
+#if 0 /* XXX */
+ if (!wx_rule_is_hidden(rule)) {
+ send_flow_removed(wx, rule, now,
+ (now >= hard_expire
+ ? OFPRR_HARD_TIMEOUT : OFPRR_IDLE_TIMEOUT));
+ }
+#endif
+ wx_rule_remove(wx, rule);
+}
+
+struct revalidate_cbdata {
+ struct wx *wx;
+ bool revalidate_all; /* Revalidate all exact-match rules? */
+ bool revalidate_subrules; /* Revalidate all exact-match subrules? */
+ struct tag_set revalidate_set; /* Set of tags to revalidate. */
+};
+
+static bool
+revalidate_rule(struct wx *wx, struct wx_rule *rule)
+{
+ const flow_t *flow = &rule->wr.cr.flow;
+
+ COVERAGE_INC(wx_revalidate_rule);
+ if (rule->super) {
+ struct wx_rule *super;
+ super = wx_rule_cast(classifier_lookup_wild(&wx->cls, flow));
+ if (!super) {
+ wx_rule_remove(wx, rule);
+ return false;
+ } else if (super != rule->super) {
+ COVERAGE_INC(wx_revalidate_moved);
+ list_remove(&rule->list);
+ list_push_back(&super->list, &rule->list);
+ rule->super = super;
+ rule->wr.hard_timeout = super->wr.hard_timeout;
+ rule->wr.idle_timeout = super->wr.idle_timeout;
+ rule->wr.created = super->wr.created;
+ rule->used = 0;
+ }
+ }
+
+ wx_rule_update_actions(wx, rule);
+ return true;
+}
+
+static void
+revalidate_cb(struct cls_rule *sub_, void *cbdata_)
+{
+ struct wx_rule *sub = wx_rule_cast(sub_);
+ struct revalidate_cbdata *cbdata = cbdata_;
+
+ if (cbdata->revalidate_all
+ || (cbdata->revalidate_subrules && sub->super)
+ || tag_set_intersects(&cbdata->revalidate_set, sub->tags)) {
+ revalidate_rule(cbdata->wx, sub);
+ }
+}
+
+static void
+wx_run_one(struct wx *wx)
+{
+ if (time_msec() >= wx->next_expiration) {
+ COVERAGE_INC(wx_expiration);
+ wx->next_expiration = time_msec() + 1000;
+ update_used(wx);
+
+ classifier_for_each(&wx->cls, CLS_INC_ALL, expire_rule, wx);
+
+ /* XXX account_checkpoint_cb */
+ }
+
+ if (wx->need_revalidate || !tag_set_is_empty(&wx->revalidate_set)) {
+ struct revalidate_cbdata cbdata;
+ cbdata.wx = wx;
+ cbdata.revalidate_all = wx->revalidate_all;
+ cbdata.revalidate_subrules = wx->need_revalidate;
+ cbdata.revalidate_set = wx->revalidate_set;
+ tag_set_init(&wx->revalidate_set);
+ COVERAGE_INC(wx_revalidate);
+ classifier_for_each(&wx->cls, CLS_INC_EXACT, revalidate_cb, &cbdata);
+ wx->need_revalidate = false;
+ }
+}
+
+static void
+wx_run(void)
+{
+ struct wx *wx;
+
+ LIST_FOR_EACH (wx, struct wx, list_node, &all_wx) {
+ wx_run_one(wx);
+ }
+ xf_run();
+}
+
+static void
+wx_wait_one(struct wx *wx)
+{
+ if (wx->need_revalidate || !tag_set_is_empty(&wx->revalidate_set)) {
+ poll_immediate_wake();
+ } else if (wx->next_expiration != LLONG_MAX) {
+ poll_timer_wait_until(wx->next_expiration);
+ }
+}
+
+static void
+wx_wait(void)
+{
+ struct wx *wx;
+
+ LIST_FOR_EACH (wx, struct wx, list_node, &all_wx) {
+ wx_wait_one(wx);
+ }
+ xf_wait();
+}
+\f
+static int wx_flow_flush(struct wdp *);
+
+static int
+wx_enumerate(const struct wdp_class *wdp_class, struct svec *all_wdps)
+{
+ struct svec names = SVEC_EMPTY_INITIALIZER;
+ int error = xf_enumerate_names(wdp_class->type, &names);
+ svec_move(all_wdps, &names);
+ return error;
+}
+
+static int
+wx_open(const struct wdp_class *wdp_class, const char *name, bool create,
+ struct wdp **wdpp)
+{
+ struct xfif *xfif;
+ int error;
+
+ error = (create
+ ? xfif_create_and_open(name, wdp_class->type, &xfif)
+ : xfif_open(name, wdp_class->type, &xfif));
+ if (!error) {
+ struct wx *wx;
+
+ wx = xzalloc(sizeof *wx);
+ list_push_back(&all_wx, &wx->list_node);
+ wdp_init(&wx->wdp, wdp_class, name, 0, 0);
+ wx->xfif = xfif;
+ classifier_init(&wx->cls);
+ wx->netdev_monitor = netdev_monitor_create();
+ port_array_init(&wx->ports);
+ shash_init(&wx->port_by_name);
+ wx->next_expiration = time_msec() + 1000;
+ tag_set_init(&wx->revalidate_set);
+
+ wx_port_init(wx);
+
+ wx->ofhooks = &default_ofhooks;
+ wx->aux = wx;
+ wx->ml = mac_learning_create();
+
+ *wdpp = &wx->wdp;
+ }
+
+ return error;
+}
+
+static void
+wx_close(struct wdp *wdp)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ wx_flow_flush(wdp);
+ xfif_close(wx->xfif);
+ classifier_destroy(&wx->cls);
+ netdev_monitor_destroy(wx->netdev_monitor);
+ list_remove(&wx->list_node);
+ mac_learning_destroy(wx->ml);
+ free(wx);
+}
+
+static int
+wx_get_all_names(const struct wdp *wdp, struct svec *all_names)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ return xfif_get_all_names(wx->xfif, all_names);
+}
+
+static int
+wx_destroy(struct wdp *wdp)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ return xfif_delete(wx->xfif);
+}
+
+static int
+wx_get_features(const struct wdp *wdp, struct ofpbuf **featuresp)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct ofp_switch_features *osf;
+ struct ofpbuf *buf;
+ unsigned int port_no;
+ struct wdp_port *port;
+
+ buf = ofpbuf_new(sizeof *osf);
+ osf = ofpbuf_put_zeros(buf, sizeof *osf);
+ osf->n_tables = 2;
+ osf->capabilities = htonl(OFPC_ARP_MATCH_IP);
+ osf->actions = htonl((1u << OFPAT_OUTPUT) |
+ (1u << OFPAT_SET_VLAN_VID) |
+ (1u << OFPAT_SET_VLAN_PCP) |
+ (1u << OFPAT_STRIP_VLAN) |
+ (1u << OFPAT_SET_DL_SRC) |
+ (1u << OFPAT_SET_DL_DST) |
+ (1u << OFPAT_SET_NW_SRC) |
+ (1u << OFPAT_SET_NW_DST) |
+ (1u << OFPAT_SET_NW_TOS) |
+ (1u << OFPAT_SET_TP_SRC) |
+ (1u << OFPAT_SET_TP_DST) |
+ (1u << OFPAT_ENQUEUE));
+
+ PORT_ARRAY_FOR_EACH (port, &wx->ports, port_no) {
+ hton_ofp_phy_port(ofpbuf_put(buf, &port->opp, sizeof port->opp));
+ }
+
+ *featuresp = buf;
+ return 0;
+}
+
+static void
+count_subrules(struct cls_rule *cls_rule, void *n_subrules_)
+{
+ struct wx_rule *rule = wx_rule_cast(cls_rule);
+ int *n_subrules = n_subrules_;
+
+ if (rule->super) {
+ (*n_subrules)++;
+ }
+}
+
+static int
+wx_get_stats(const struct wdp *wdp, struct wdp_stats *stats)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct xflow_stats xflow_stats;
+ int error;
+
+ error = xfif_get_xf_stats(wx->xfif, &xflow_stats);
+ stats->max_ports = xflow_stats.max_ports;
+ return error;
+}
+
+static int
+wx_get_table_stats(const struct wdp *wdp, struct ofpbuf *stats)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct xflow_stats xflow_stats;
+ struct ofp_table_stats *exact, *wild;
+ int n_subrules;
+
+ xfif_get_xf_stats(wx->xfif, &xflow_stats);
+ /* XXX should pass up errors, but there are no appropriate OpenFlow error
+ * codes. */
+
+ n_subrules = 0;
+ classifier_for_each(&wx->cls, CLS_INC_EXACT, count_subrules, &n_subrules);
+
+ exact = ofpbuf_put_zeros(stats, sizeof *exact);
+ exact->table_id = TABLEID_HASH;
+ strcpy(exact->name, "exact");
+ exact->wildcards = htonl(0);
+ exact->max_entries = htonl(MIN(WX_MAX_EXACT, xflow_stats.max_capacity));
+ exact->active_count = htonl(classifier_count_exact(&wx->cls) - n_subrules);
+ exact->lookup_count = htonll(xflow_stats.n_hit + xflow_stats.n_missed);
+ exact->matched_count = htonll(xflow_stats.n_hit);
+
+ wild = ofpbuf_put_zeros(stats, sizeof *exact);
+ wild->table_id = TABLEID_CLASSIFIER;
+ strcpy(wild->name, "classifier");
+ wild->wildcards = htonl(OVSFW_ALL);
+ wild->max_entries = htonl(WX_MAX_WILD);
+ wild->active_count = htonl(classifier_count_wild(&wx->cls));
+ wild->lookup_count = htonll(0); /* XXX */
+ wild->matched_count = htonll(0); /* XXX */
+
+ return 0;
+}
+
+static int
+wx_get_drop_frags(const struct wdp *wdp, bool *drop_frags)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ return xfif_get_drop_frags(wx->xfif, drop_frags);
+}
+
+static int
+wx_set_drop_frags(struct wdp *wdp, bool drop_frags)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ return xfif_set_drop_frags(wx->xfif, drop_frags);
+}
+
+static int
+wx_port_add(struct wdp *wdp, const char *devname,
+ bool internal, uint16_t *port_no)
+{
+ struct wx *wx = wx_cast(wdp);
+ uint16_t xflow_flags = internal ? XFLOW_PORT_INTERNAL : 0;
+ return xfif_port_add(wx->xfif, devname, xflow_flags, port_no);
+}
+
+static int
+wx_port_del(struct wdp *wdp, uint16_t port_no)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ return xfif_port_del(wx->xfif, port_no);
+}
+
+static int
+wx_answer_port_query(const struct wdp_port *port, struct wdp_port *portp)
+{
+ if (port) {
+ wdp_port_copy(portp, port);
+ return 0;
+ } else {
+ return ENOENT;
+ }
+}
+
+static int
+wx_port_query_by_number(const struct wdp *wdp, uint16_t port_no,
+ struct wdp_port *portp)
+{
+ struct wx *wx = wx_cast(wdp);
+ const struct wdp_port *port;
+
+ port = port_array_get(&wx->ports, ofp_port_to_xflow_port(port_no));
+ return wx_answer_port_query(port, portp);
+}
+
+static int
+wx_port_query_by_name(const struct wdp *wdp, const char *devname,
+ struct wdp_port *portp)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ return wx_answer_port_query(shash_find_data(&wx->port_by_name, devname),
+ portp);
+}
+
+static int
+wx_port_set_config(struct wdp *wdp, uint16_t port_no, uint32_t config)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct wdp_port *port;
+ uint32_t changes;
+
+ port = port_array_get(&wx->ports, ofp_port_to_xflow_port(port_no));
+ if (!port) {
+ return ENOENT;
+ }
+ changes = config ^ port->opp.config;
+
+ if (changes & OFPPC_PORT_DOWN) {
+ int error;
+ if (config & OFPPC_PORT_DOWN) {
+ error = netdev_turn_flags_off(port->netdev, NETDEV_UP, true);
+ } else {
+ error = netdev_turn_flags_on(port->netdev, NETDEV_UP, true);
+ }
+ if (!error) {
+ port->opp.config ^= OFPPC_PORT_DOWN;
+ }
+ }
+
+#define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD)
+ if (changes & REVALIDATE_BITS) {
+ COVERAGE_INC(wx_costly_flags);
+ port->opp.config ^= changes & REVALIDATE_BITS;
+ wx->need_revalidate = true;
+ }
+#undef REVALIDATE_BITS
+
+ if (changes & OFPPC_NO_FLOOD) {
+ port->opp.config ^= OFPPC_NO_FLOOD;
+ wx_port_refresh_groups(wx);
+ }
+
+ if (changes & OFPPC_NO_PACKET_IN) {
+ port->opp.config ^= OFPPC_NO_PACKET_IN;
+ }
+
+ return 0;
+}
+
+static int
+wx_port_list(const struct wdp *wdp, struct wdp_port **portsp, size_t *n_portsp)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct wdp_port *ports, *port;
+ unsigned int port_no;
+ size_t n_ports, i;
+
+ *n_portsp = n_ports = port_array_count(&wx->ports);
+ *portsp = ports = xmalloc(n_ports * sizeof *ports);
+ i = 0;
+ PORT_ARRAY_FOR_EACH (port, &wx->ports, port_no) {
+ wdp_port_copy(&ports[i++], port);
+ }
+ assert(i == n_ports);
+
+ return 0;
+}
+
+static int
+wx_port_poll(struct wdp *wdp, wdp_port_poll_cb_func *cb, void *aux)
+{
+ struct wx *wx = wx_cast(wdp);
+ char *devname;
+ int retval;
+ int error;
+
+ retval = 0;
+ while ((error = xfif_port_poll(wx->xfif, &devname)) != EAGAIN) {
+ wx_port_process_change(wx, error, devname, cb, aux);
+ if (error && error != ENOBUFS) {
+ retval = error;
+ }
+ }
+ while ((error = netdev_monitor_poll(wx->netdev_monitor,
+ &devname)) != EAGAIN) {
+ wx_port_process_change(wx, error, devname, cb, aux);
+ if (error && error != ENOBUFS) {
+ retval = error;
+ }
+ }
+ return retval;
+}
+
+static int
+wx_port_poll_wait(const struct wdp *wdp)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ xfif_port_poll_wait(wx->xfif);
+ netdev_monitor_poll_wait(wx->netdev_monitor);
+ return 0;
+}
+
+static struct wdp_rule *
+wx_flow_get(const struct wdp *wdp, const flow_t *flow, unsigned int include)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct wx_rule *rule;
+ int table_id;
+
+ table_id = flow->wildcards ? TABLEID_CLASSIFIER : TABLEID_HASH;
+ if (!(include & (1u << table_id))) {
+ return NULL;
+ }
+
+ rule = wx_rule_cast(classifier_find_rule_exactly(&wx->cls, flow));
+ return rule && !wx_rule_is_hidden(rule) ? &rule->wr : NULL;
+}
+
+static struct wdp_rule *
+wx_flow_match(const struct wdp *wdp, const flow_t *flow)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct wx_rule *rule;
+
+ rule = wx_rule_cast(classifier_lookup(&wx->cls, flow));
+ if (rule) {
+ if (wx_rule_is_hidden(rule)) {
+ rule = rule->super;
+ }
+ return &rule->wr;
+ } else {
+ return NULL;
+ }
+}
+
+struct wx_for_each_thunk_aux {
+ wdp_flow_cb_func *client_callback;
+ void *client_aux;
+};
+
+static void
+wx_for_each_thunk(struct cls_rule *cls_rule, void *aux_)
+{
+ struct wx_for_each_thunk_aux *aux = aux_;
+ struct wx_rule *rule = wx_rule_cast(cls_rule);
+
+ if (!wx_rule_is_hidden(rule)) {
+ aux->client_callback(&rule->wr, aux->client_aux);
+ }
+}
+
+static void
+wx_flow_for_each_match(const struct wdp *wdp, const flow_t *target,
+ unsigned int include,
+ wdp_flow_cb_func *client_callback, void *client_aux)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct wx_for_each_thunk_aux aux;
+ int cls_include;
+
+ cls_include = 0;
+ if (include & (1u << TABLEID_HASH)) {
+ cls_include |= CLS_INC_EXACT;
+ }
+ if (include & (1u << TABLEID_CLASSIFIER)) {
+ cls_include |= CLS_INC_WILD;
+ }
+
+ aux.client_callback = client_callback;
+ aux.client_aux = client_aux;
+ classifier_for_each_match(&wx->cls, target, cls_include,
+ wx_for_each_thunk, &aux);
+}
+
+/* Obtains statistic counters for 'rule' within 'wx' and stores them into
+ * '*stats'. If 'rule' is a wildcarded rule, the returned statistic include
+ * statistics for all of 'rule''s subrules. */
+static void
+query_stats(struct wx *wx, struct wx_rule *rule, struct wdp_flow_stats *stats)
+{
+ struct wx_rule *subrule;
+ struct xflow_flow *xflow_flows;
+ size_t n_xflow_flows;
+
+ /* Start from historical data for 'rule' itself that are no longer tracked
+ * by the datapath. This counts, for example, subrules that have
+ * expired. */
+ stats->n_packets = rule->packet_count;
+ stats->n_bytes = rule->byte_count;
+ stats->inserted = rule->wr.created;
+ stats->used = LLONG_MIN;
+ stats->tcp_flags = 0;
+ stats->ip_tos = 0;
+
+ /* Prepare to ask the datapath for statistics on 'rule', or if it is
+ * wildcarded then on all of its subrules.
+ *
+ * Also, add any statistics that are not tracked by the datapath for each
+ * subrule. This includes, for example, statistics for packets that were
+ * executed "by hand" by ofproto via xfif_execute() but must be accounted
+ * to a flow. */
+ n_xflow_flows = rule->wr.cr.flow.wildcards ? list_size(&rule->list) : 1;
+ xflow_flows = xzalloc(n_xflow_flows * sizeof *xflow_flows);
+ if (rule->wr.cr.flow.wildcards) {
+ size_t i = 0;
+ LIST_FOR_EACH (subrule, struct wx_rule, list, &rule->list) {
+ xflow_key_from_flow(&xflow_flows[i++].key, &subrule->wr.cr.flow);
+ stats->n_packets += subrule->packet_count;
+ stats->n_bytes += subrule->byte_count;
+ }
+ } else {
+ xflow_key_from_flow(&xflow_flows[0].key, &rule->wr.cr.flow);
+ }
+
+ /* Fetch up-to-date statistics from the datapath and add them in. */
+ if (!xfif_flow_get_multiple(wx->xfif, xflow_flows, n_xflow_flows)) {
+ size_t i;
+ for (i = 0; i < n_xflow_flows; i++) {
+ struct xflow_flow *xflow_flow = &xflow_flows[i];
+ long long int used;
+
+ stats->n_packets += xflow_flow->stats.n_packets;
+ stats->n_bytes += xflow_flow->stats.n_bytes;
+ used = xflow_flow_stats_to_msec(&xflow_flow->stats);
+ if (used > stats->used) {
+ stats->used = used;
+ if (xflow_flow->key.dl_type == htons(ETH_TYPE_IP)
+ && xflow_flow->key.nw_proto == IP_TYPE_TCP) {
+ stats->ip_tos = xflow_flow->stats.ip_tos;
+ }
+ }
+ stats->tcp_flags |= xflow_flow->stats.tcp_flags;
+ }
+ }
+ free(xflow_flows);
+}
+
+static int
+wx_flow_get_stats(const struct wdp *wdp,
+ const struct wdp_rule *wdp_rule,
+ struct wdp_flow_stats *stats)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct wx_rule *rule = wx_rule_cast(&wdp_rule->cr);
+
+ query_stats(wx, rule, stats);
+ return 0;
+}
+
+static bool
+wx_flow_overlaps(const struct wdp *wdp, const flow_t *flow)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ /* XXX overlap with a subrule? */
+ return classifier_rule_overlaps(&wx->cls, flow);
+}
+
+static int
+wx_flow_put(struct wdp *wdp, const struct wdp_flow_put *put,
+ struct wdp_flow_stats *old_stats, struct wdp_rule **rulep)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct wx_rule *rule;
+ uint8_t ofp_table_id;
+
+ ofp_table_id = put->flow->wildcards ? TABLEID_CLASSIFIER : TABLEID_HASH;
+ if (put->ofp_table_id != 0xff && put->ofp_table_id != ofp_table_id) {
+ return EINVAL;
+ }
+
+ rule = wx_rule_cast(classifier_find_rule_exactly(&wx->cls, put->flow));
+ if (rule && wx_rule_is_hidden(rule)) {
+ rule = NULL;
+ }
+
+ if (rule) {
+ if (!(put->flags & WDP_PUT_MODIFY)) {
+ return EEXIST;
+ }
+ } else {
+ if (!(put->flags & WDP_PUT_CREATE)) {
+ return EINVAL;
+ }
+ if ((put->flow->wildcards
+ ? classifier_count_wild(&wx->cls) >= WX_MAX_WILD
+ : classifier_count_exact(&wx->cls) >= WX_MAX_EXACT)) {
+ /* XXX subrules should not count against exact-match limit */
+ return ENOBUFS;
+ }
+ }
+
+ rule = wx_rule_create(NULL, put->actions, put->n_actions,
+ put->idle_timeout, put->hard_timeout);
+ cls_rule_from_flow(put->flow, &rule->wr.cr);
+ rule->wr.ofp_table_id = ofp_table_id;
+ wx_rule_insert(wx, rule, NULL, 0);
+
+ if (old_stats) {
+ /* XXX */
+ memset(old_stats, 0, sizeof *old_stats);
+ }
+ if (rulep) {
+ *rulep = &rule->wr;
+ }
+
+ return 0;
+}
+
+static int
+wx_flow_delete(struct wdp *wdp, struct wdp_rule *wdp_rule,
+ struct wdp_flow_stats *final_stats)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct wx_rule *rule = wx_rule_cast(&wdp_rule->cr);
+
+ wx_rule_remove(wx, rule);
+ if (final_stats) {
+ memset(final_stats, 0, sizeof *final_stats); /* XXX */
+ }
+ return 0;
+}
+
+static void
+wx_flush_rule(struct cls_rule *cls_rule, void *wx_)
+{
+ struct wx_rule *rule = wx_rule_cast(cls_rule);
+ struct wx *wx = wx_;
+
+ /* Mark the flow as not installed, even though it might really be
+ * installed, so that wx_rule_remove() doesn't bother trying to uninstall
+ * it. There is no point in uninstalling it individually since we are
+ * about to blow away all the flows with xfif_flow_flush(). */
+ rule->installed = false;
+
+ wx_rule_remove(wx, rule);
+}
+
+static int
+wx_flow_flush(struct wdp *wdp)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ COVERAGE_INC(wx_flow_flush);
+ classifier_for_each(&wx->cls, CLS_INC_ALL, wx_flush_rule, wx);
+ xfif_flow_flush(wx->xfif);
+ return 0;
+}
+
+static int
+wx_execute(struct wdp *wdp, uint16_t in_port,
+ const union ofp_action actions[], int n_actions,
+ const struct ofpbuf *packet)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct xflow_actions xflow_actions;
+ flow_t flow;
+ int error;
+
+ flow_extract((struct ofpbuf *) packet, 0, in_port, &flow);
+ error = wx_xlate_actions(wx, actions, n_actions, &flow, packet,
+ NULL, &xflow_actions, NULL);
+ if (error) {
+ return error;
+ }
+ xfif_execute(wx->xfif, ofp_port_to_xflow_port(in_port),
+ xflow_actions.actions, xflow_actions.n_actions, packet);
+ return 0;
+}
+
+static int
+wx_flow_inject(struct wdp *wdp, struct wdp_rule *wdp_rule,
+ uint16_t in_port, const struct ofpbuf *packet)
+{
+ struct wx_rule *rule = wx_rule_cast(&wdp_rule->cr);
+ int error;
+
+ error = wx_execute(wdp, in_port, rule->wr.actions, rule->wr.n_actions,
+ packet);
+ if (!error) {
+ rule->packet_count++;
+ rule->byte_count += packet->size;
+ rule->used = time_msec();
+ }
+ return error;
+}
+
+static int
+wx_recv_get_mask(const struct wdp *wdp, int *listen_mask)
+{
+ struct wx *wx = wx_cast(wdp);
+ int xflow_listen_mask;
+ int error;
+
+ error = xfif_recv_get_mask(wx->xfif, &xflow_listen_mask);
+ if (!error) {
+ *listen_mask = 0;
+ if (xflow_listen_mask & XFLOWL_MISS) {
+ *listen_mask |= 1 << WDP_CHAN_MISS;
+ }
+ if (xflow_listen_mask & XFLOWL_ACTION) {
+ *listen_mask |= 1 << WDP_CHAN_ACTION;
+ }
+ if (xflow_listen_mask & XFLOWL_SFLOW) {
+ *listen_mask |= 1 << WDP_CHAN_SFLOW;
+ }
+ }
+ return error;
+}
+
+static int
+wx_recv_set_mask(struct wdp *wdp, int listen_mask)
+{
+ struct wx *wx = wx_cast(wdp);
+ int xflow_listen_mask;
+
+ xflow_listen_mask = 0;
+ if (listen_mask & (1 << WDP_CHAN_MISS)) {
+ xflow_listen_mask |= XFLOWL_MISS;
+ }
+ if (listen_mask & (1 << WDP_CHAN_ACTION)) {
+ xflow_listen_mask |= XFLOWL_ACTION;
+ }
+ if (listen_mask & (1 << WDP_CHAN_SFLOW)) {
+ xflow_listen_mask |= XFLOWL_SFLOW;
+ }
+
+ return xfif_recv_set_mask(wx->xfif, xflow_listen_mask);
+}
+
+static int
+wx_get_sflow_probability(const struct wdp *wdp, uint32_t *probability)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ return xfif_get_sflow_probability(wx->xfif, probability);
+}
+
+static int
+wx_set_sflow_probability(struct wdp *wdp, uint32_t probability)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ return xfif_set_sflow_probability(wx->xfif, probability);
+}
+
+static int
+wx_translate_xflow_msg(struct xflow_msg *msg, struct ofpbuf *payload,
+ struct wdp_packet *packet)
+{
+ packet->in_port = xflow_port_to_ofp_port(msg->port);
+ packet->send_len = 0;
+ packet->tun_id = 0;
+
+ switch (msg->type) {
+ case _XFLOWL_MISS_NR:
+ packet->channel = WDP_CHAN_MISS;
+ packet->payload = payload;
+ packet->tun_id = msg->arg;
+ return 0;
+
+ case _XFLOWL_ACTION_NR:
+ packet->channel = WDP_CHAN_ACTION;
+ packet->payload = payload;
+ packet->send_len = msg->arg;
+ return 0;
+
+ case _XFLOWL_SFLOW_NR:
+ /* XXX */
+ ofpbuf_delete(payload);
+ return ENOSYS;
+
+ default:
+ VLOG_WARN_RL(&rl, "received XFLOW message of unexpected type %"PRIu32,
+ msg->type);
+ ofpbuf_delete(payload);
+ return ENOSYS;
+ }
+}
+
+static const uint8_t *
+get_local_mac(const struct wx *wx)
+{
+ const struct wdp_port *port = port_array_get(&wx->ports, XFLOWP_LOCAL);
+ return port ? port->opp.hw_addr : NULL;
+}
+
+/* Returns true if 'packet' is a DHCP reply to the local port. Such a reply
+ * should be sent to the local port regardless of the flow table.
+ *
+ * We only need this, strictly speaking, when in-band control is turned on. */
+static bool
+wx_is_local_dhcp_reply(const struct wx *wx,
+ const flow_t *flow, const struct ofpbuf *packet)
+{
+ if (flow->dl_type == htons(ETH_TYPE_IP)
+ && flow->nw_proto == IP_TYPE_UDP
+ && flow->tp_src == htons(DHCP_SERVER_PORT)
+ && flow->tp_dst == htons(DHCP_CLIENT_PORT)
+ && packet->l7)
+ {
+ const uint8_t *local_mac = get_local_mac(wx);
+ struct dhcp_header *dhcp = ofpbuf_at(
+ packet, (char *)packet->l7 - (char *)packet->data, sizeof *dhcp);
+ return dhcp && local_mac && eth_addr_equals(dhcp->chaddr, local_mac);
+ }
+
+ return false;
+}
+
+static bool
+wx_explode_rule(struct wx *wx, struct xflow_msg *msg, struct ofpbuf *payload)
+{
+ struct wx_rule *rule;
+ flow_t flow;
+
+ flow_extract(payload, 0, xflow_port_to_ofp_port(msg->port), &flow);
+
+ if (wx_is_local_dhcp_reply(wx, &flow, payload)) {
+ union xflow_action action;
+
+ memset(&action, 0, sizeof(action));
+ action.output.type = XFLOWAT_OUTPUT;
+ action.output.port = XFLOWP_LOCAL;
+ xfif_execute(wx->xfif, msg->port, &action, 1, payload);
+ }
+
+ rule = wx_rule_lookup_valid(wx, &flow);
+ if (!rule) {
+ return false;
+ }
+
+ if (rule->wr.cr.flow.wildcards) {
+ rule = wx_rule_create_subrule(wx, rule, &flow);
+ wx_rule_make_actions(wx, rule, payload);
+ } else {
+ if (!rule->may_install) {
+ /* The rule is not installable, that is, we need to process every
+ * packet, so process the current packet and set its actions into
+ * 'subrule'. */
+ wx_rule_make_actions(wx, rule, payload);
+ } else {
+ /* XXX revalidate rule if it needs it */
+ }
+ }
+
+ wx_rule_execute(wx, rule, payload, &flow);
+ wx_rule_reinstall(wx, rule);
+
+ return true;
+}
+
+static int
+wx_recv(struct wdp *wdp, struct wdp_packet *packet)
+{
+ struct wx *wx = wx_cast(wdp);
+ int i;
+
+ /* XXX need to avoid 50*50 potential cost for caller. */
+ for (i = 0; i < 50; i++) {
+ struct xflow_msg *msg;
+ struct ofpbuf *buf;
+ int error;
+
+ error = xfif_recv(wx->xfif, &buf);
+ if (error) {
+ return error;
+ }
+
+ msg = ofpbuf_pull(buf, sizeof *msg);
+ if (msg->type != _XFLOWL_MISS_NR || !wx_explode_rule(wx, msg, buf)) {
+ return wx_translate_xflow_msg(msg, buf, packet);
+ }
+ ofpbuf_delete(buf);
+ }
+ return EAGAIN;
+}
+
+static void
+wx_recv_purge_queue__(struct wx *wx, int max, int xflow_listen_mask,
+ int *errorp)
+{
+ int error;
+
+ error = xfif_recv_set_mask(wx->xfif, xflow_listen_mask);
+ if (!error) {
+ struct ofpbuf *buf;
+
+ while (max > 0 && (error = xfif_recv(wx->xfif, &buf)) == 0) {
+ ofpbuf_delete(buf);
+ max--;
+ }
+ }
+ if (error && error != EAGAIN) {
+ *errorp = error;
+ }
+}
+
+static int
+wx_recv_purge(struct wdp *wdp)
+{
+ struct wx *wx = wx_cast(wdp);
+ struct xflow_stats xflow_stats;
+ int xflow_listen_mask;
+ int retval, error;
+
+ xfif_get_xf_stats(wx->xfif, &xflow_stats);
+
+ error = xfif_recv_get_mask(wx->xfif, &xflow_listen_mask);
+ if (error || !(xflow_listen_mask & XFLOWL_ALL)) {
+ return error;
+ }
+
+ if (xflow_listen_mask & XFLOWL_MISS) {
+ wx_recv_purge_queue__(wx, xflow_stats.max_miss_queue, XFLOWL_MISS,
+ &error);
+ }
+ if (xflow_listen_mask & XFLOWL_ACTION) {
+ wx_recv_purge_queue__(wx, xflow_stats.max_action_queue, XFLOWL_ACTION,
+ &error);
+ }
+ if (xflow_listen_mask & XFLOWL_SFLOW) {
+ wx_recv_purge_queue__(wx, xflow_stats.max_sflow_queue, XFLOWL_SFLOW,
+ &error);
+ }
+
+ retval = xfif_recv_set_mask(wx->xfif, xflow_listen_mask);
+ return retval ? retval : error;
+}
+
+
+static void
+wx_recv_wait(struct wdp *wdp)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ xfif_recv_wait(wx->xfif);
+}
+
+static int
+wx_set_ofhooks(struct wdp *wdp, const struct ofhooks *ofhooks, void *aux)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ if (wx->ofhooks == &default_ofhooks) {
+ mac_learning_destroy(wx->ml);
+ wx->ml = NULL;
+ }
+
+ wx->ofhooks = ofhooks;
+ wx->aux = aux;
+ return 0;
+}
+
+static void
+wx_revalidate(struct wdp *wdp, tag_type tag)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ tag_set_add(&wx->revalidate_set, tag);
+}
+
+static void
+wx_revalidate_all(struct wdp *wdp)
+{
+ struct wx *wx = wx_cast(wdp);
+
+ wx->revalidate_all = true;
+}
+\f
+static void wx_port_update(struct wx *, const char *devname,
+ wdp_port_poll_cb_func *cb, void *aux);
+static void wx_port_reinit(struct wx *, wdp_port_poll_cb_func *cb, void *aux);
+
+static void
+wx_port_process_change(struct wx *wx, int error, char *devname,
+ wdp_port_poll_cb_func *cb, void *aux)
+{
+ if (error == ENOBUFS) {
+ wx_port_reinit(wx, cb, aux);
+ } else if (!error) {
+ wx_port_update(wx, devname, cb, aux);
+ free(devname);
+ }
+}
+
+static size_t
+wx_port_refresh_group(struct wx *wx, unsigned int group)
+{
+ uint16_t *ports;
+ size_t n_ports;
+ struct wdp_port *port;
+ unsigned int port_no;
+
+ assert(group == WX_GROUP_ALL || group == WX_GROUP_FLOOD);
+
+ ports = xmalloc(port_array_count(&wx->ports) * sizeof *ports);
+ n_ports = 0;
+ PORT_ARRAY_FOR_EACH (port, &wx->ports, port_no) {
+ if (group == WX_GROUP_ALL || !(port->opp.config & OFPPC_NO_FLOOD)) {
+ ports[n_ports++] = port_no;
+ }
+ }
+ xfif_port_group_set(wx->xfif, group, ports, n_ports);
+ free(ports);
+
+ return n_ports;
+}
+
+static void
+wx_port_refresh_groups(struct wx *wx)
+{
+ wx_port_refresh_group(wx, WX_GROUP_FLOOD);
+ wx_port_refresh_group(wx, WX_GROUP_ALL);
+}
+
+static void
+wx_port_reinit(struct wx *wx, wdp_port_poll_cb_func *cb, void *aux)
+{
+ struct svec devnames;
+ struct wdp_port *wdp_port;
+ unsigned int port_no;
+ struct xflow_port *xflow_ports;
+ size_t n_xflow_ports;
+ size_t i;
+
+ svec_init(&devnames);
+ PORT_ARRAY_FOR_EACH (wdp_port, &wx->ports, port_no) {
+ svec_add (&devnames, (char *) wdp_port->opp.name);
+ }
+ xfif_port_list(wx->xfif, &xflow_ports, &n_xflow_ports);
+ for (i = 0; i < n_xflow_ports; i++) {
+ svec_add(&devnames, xflow_ports[i].devname);
+ }
+ free(xflow_ports);
+
+ svec_sort_unique(&devnames);
+ for (i = 0; i < devnames.n; i++) {
+ wx_port_update(wx, devnames.names[i], cb, aux);
+ }
+ svec_destroy(&devnames);
+
+ wx_port_refresh_groups(wx);
+}
+
+static struct wdp_port *
+make_wdp_port(const struct xflow_port *xflow_port)
+{
+ struct netdev_options netdev_options;
+ enum netdev_flags flags;
+ struct wdp_port *wdp_port;
+ struct netdev *netdev;
+ bool carrier;
+ int error;
+
+ memset(&netdev_options, 0, sizeof netdev_options);
+ netdev_options.name = xflow_port->devname;
+ netdev_options.ethertype = NETDEV_ETH_TYPE_NONE;
+
+ error = netdev_open(&netdev_options, &netdev);
+ if (error) {
+ VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s "
+ "cannot be opened (%s)",
+ xflow_port->devname, xflow_port->port,
+ xflow_port->devname, strerror(error));
+ return NULL;
+ }
+
+ wdp_port = xmalloc(sizeof *wdp_port);
+ wdp_port->netdev = netdev;
+ wdp_port->opp.port_no = xflow_port_to_ofp_port(xflow_port->port);
+ netdev_get_etheraddr(netdev, wdp_port->opp.hw_addr);
+ strncpy((char *) wdp_port->opp.name, xflow_port->devname,
+ sizeof wdp_port->opp.name);
+ wdp_port->opp.name[sizeof wdp_port->opp.name - 1] = '\0';
+
+ netdev_get_flags(netdev, &flags);
+ wdp_port->opp.config = flags & NETDEV_UP ? 0 : OFPPC_PORT_DOWN;
+
+ netdev_get_carrier(netdev, &carrier);
+ wdp_port->opp.state = carrier ? 0 : OFPPS_LINK_DOWN;
+
+ netdev_get_features(netdev,
+ &wdp_port->opp.curr, &wdp_port->opp.advertised,
+ &wdp_port->opp.supported, &wdp_port->opp.peer);
+
+ wdp_port->devname = xstrdup(xflow_port->devname);
+ wdp_port->internal = (xflow_port->flags & XFLOW_PORT_INTERNAL) != 0;
+ return wdp_port;
+}
+
+static bool
+wx_port_conflicts(const struct wx *wx, const struct xflow_port *xflow_port)
+{
+ if (port_array_get(&wx->ports, xflow_port->port)) {
+ VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath",
+ xflow_port->port);
+ return true;
+ } else if (shash_find(&wx->port_by_name, xflow_port->devname)) {
+ VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath",
+ xflow_port->devname);
+ return true;
+ } else {
+ return false;
+ }
+}
+
+static int
+wdp_port_equal(const struct wdp_port *a_, const struct wdp_port *b_)
+{
+ const struct ofp_phy_port *a = &a_->opp;
+ const struct ofp_phy_port *b = &b_->opp;
+
+ BUILD_ASSERT_DECL(sizeof *a == 48); /* Detect ofp_phy_port changes. */
+ return (a->port_no == b->port_no
+ && !memcmp(a->hw_addr, b->hw_addr, sizeof a->hw_addr)
+ && !strcmp((char *) a->name, (char *) b->name)
+ && a->state == b->state
+ && a->config == b->config
+ && a->curr == b->curr
+ && a->advertised == b->advertised
+ && a->supported == b->supported
+ && a->peer == b->peer);
+}
+
+static void
+wx_port_install(struct wx *wx, struct wdp_port *wdp_port)
+{
+ uint16_t xflow_port = ofp_port_to_xflow_port(wdp_port->opp.port_no);
+ const char *netdev_name = (const char *) wdp_port->opp.name;
+
+ netdev_monitor_add(wx->netdev_monitor, wdp_port->netdev);
+ port_array_set(&wx->ports, xflow_port, wdp_port);
+ shash_add(&wx->port_by_name, netdev_name, wdp_port);
+}
+
+static void
+wx_port_remove(struct wx *wx, struct wdp_port *wdp_port)
+{
+ uint16_t xflow_port = ofp_port_to_xflow_port(wdp_port->opp.port_no);
+
+ netdev_monitor_remove(wx->netdev_monitor, wdp_port->netdev);
+ port_array_delete(&wx->ports, xflow_port);
+ shash_delete(&wx->port_by_name,
+ shash_find(&wx->port_by_name, (char *) wdp_port->opp.name));
+}
+
+static void
+wx_port_free(struct wdp_port *wdp_port)
+{
+ if (wdp_port) {
+ netdev_close(wdp_port->netdev);
+ free(wdp_port);
+ }
+}
+
+static void
+wx_port_update(struct wx *wx, const char *devname,
+ wdp_port_poll_cb_func *cb, void *aux)
+{
+ struct xflow_port xflow_port;
+ struct wdp_port *old_wdp_port;
+ struct wdp_port *new_wdp_port;
+ int error;
+
+ COVERAGE_INC(wx_update_port);
+
+ /* Query the datapath for port information. */
+ error = xfif_port_query_by_name(wx->xfif, devname, &xflow_port);
+
+ /* Find the old wdp_port. */
+ old_wdp_port = shash_find_data(&wx->port_by_name, devname);
+ if (!error) {
+ if (!old_wdp_port) {
+ /* There's no port named 'devname' but there might be a port with
+ * the same port number. This could happen if a port is deleted
+ * and then a new one added in its place very quickly, or if a port
+ * is renamed. In the former case we want to send an OFPPR_DELETE
+ * and an OFPPR_ADD, and in the latter case we want to send a
+ * single OFPPR_MODIFY. We can distinguish the cases by comparing
+ * the old port's ifindex against the new port, or perhaps less
+ * reliably but more portably by comparing the old port's MAC
+ * against the new port's MAC. However, this code isn't that smart
+ * and always sends an OFPPR_MODIFY (XXX). */
+ old_wdp_port = port_array_get(&wx->ports, xflow_port.port);
+ }
+ } else if (error != ENOENT && error != ENODEV) {
+ VLOG_WARN_RL(&rl, "xfif_port_query_by_name returned unexpected error "
+ "%s", strerror(error));
+ return;
+ }
+
+ /* Create a new wdp_port. */
+ new_wdp_port = !error ? make_wdp_port(&xflow_port) : NULL;
+
+ /* Eliminate a few pathological cases. */
+ if (!old_wdp_port && !new_wdp_port) {
+ return;
+ } else if (old_wdp_port && new_wdp_port) {
+ /* Most of the 'config' bits are OpenFlow soft state, but
+ * OFPPC_PORT_DOWN is maintained by the kernel. So transfer the
+ * OpenFlow bits from old_wdp_port. (make_wdp_port() only sets
+ * OFPPC_PORT_DOWN and leaves the other bits 0.) */
+ new_wdp_port->opp.config |= old_wdp_port->opp.config & ~OFPPC_PORT_DOWN;
+
+ if (wdp_port_equal(old_wdp_port, new_wdp_port)) {
+ /* False alarm--no change. */
+ wx_port_free(new_wdp_port);
+ return;
+ }
+ }
+
+ /* Now deal with the normal cases. */
+ if (old_wdp_port) {
+ wx_port_remove(wx, old_wdp_port);
+ }
+ if (new_wdp_port) {
+ wx_port_install(wx, new_wdp_port);
+ }
+
+ /* Call back. */
+ if (!old_wdp_port) {
+ (*cb)(&new_wdp_port->opp, OFPPR_ADD, aux);
+ } else if (!new_wdp_port) {
+ (*cb)(&old_wdp_port->opp, OFPPR_DELETE, aux);
+ } else {
+ (*cb)(&new_wdp_port->opp, OFPPR_MODIFY, aux);
+ }
+
+ /* Update port groups. */
+ wx_port_refresh_groups(wx);
+
+ /* Clean up. */
+ wx_port_free(old_wdp_port);
+}
+
+static int
+wx_port_init(struct wx *wx)
+{
+ struct xflow_port *ports;
+ size_t n_ports;
+ size_t i;
+ int error;
+
+ error = xfif_port_list(wx->xfif, &ports, &n_ports);
+ if (error) {
+ return error;
+ }
+
+ for (i = 0; i < n_ports; i++) {
+ const struct xflow_port *xflow_port = &ports[i];
+ if (!wx_port_conflicts(wx, xflow_port)) {
+ struct wdp_port *wdp_port = make_wdp_port(xflow_port);
+ if (wdp_port) {
+ wx_port_install(wx, wdp_port);
+ }
+ }
+ }
+ free(ports);
+ wx_port_refresh_groups(wx);
+ return 0;
+}
+\f
+void
+wdp_xflow_register(void)
+{
+ static const struct wdp_class wdp_xflow_class = {
+ NULL, /* name */
+ wx_run,
+ wx_wait,
+ wx_enumerate,
+ wx_open,
+ wx_close,
+ wx_get_all_names,
+ wx_destroy,
+ wx_get_features,
+ wx_get_stats,
+ wx_get_table_stats,
+ wx_get_drop_frags,
+ wx_set_drop_frags,
+ wx_port_add,
+ wx_port_del,
+ wx_port_query_by_number,
+ wx_port_query_by_name,
+ wx_port_list,
+ wx_port_set_config,
+ wx_port_poll,
+ wx_port_poll_wait,
+ wx_flow_get,
+ wx_flow_match,
+ wx_flow_for_each_match,
+ wx_flow_get_stats,
+ wx_flow_overlaps,
+ wx_flow_put,
+ wx_flow_delete,
+ wx_flow_flush,
+ wx_flow_inject,
+ wx_execute,
+ wx_recv_get_mask,
+ wx_recv_set_mask,
+ wx_get_sflow_probability,
+ wx_set_sflow_probability,
+ wx_recv,
+ wx_recv_purge,
+ wx_recv_wait,
+ wx_set_ofhooks,
+ wx_revalidate,
+ wx_revalidate_all,
+ };
+
+ static bool inited = false;
+
+ struct svec types;
+ const char *type;
+ bool registered;
+ int i;
+
+ if (inited) {
+ return;
+ }
+ inited = true;
+
+ svec_init(&types);
+ xf_enumerate_types(&types);
+
+ registered = false;
+ SVEC_FOR_EACH (i, type, &types) {
+ struct wdp_class *class;
+
+ class = xmalloc(sizeof *class);
+ *class = wdp_xflow_class;
+ class->type = xstrdup(type);
+ if (registered) {
+ class->run = NULL;
+ class->wait = NULL;
+ }
+ if (!wdp_register_provider(class)) {
+ registered = true;
+ }
+ }
+
+ svec_destroy(&types);
+}
+\f
+static bool
+default_normal_ofhook_cb(const flow_t *flow, const struct ofpbuf *packet,
+ struct xflow_actions *actions, tag_type *tags,
+ uint16_t *nf_output_iface, void *wx_)
+{
+ struct wx *wx = wx_;
+ int out_port;
+
+ /* Drop frames for reserved multicast addresses. */
+ if (eth_addr_is_reserved(flow->dl_dst)) {
+ return true;
+ }
+
+ /* Learn source MAC (but don't try to learn from revalidation). */
+ if (packet != NULL) {
+ tag_type rev_tag = mac_learning_learn(wx->ml, flow->dl_src,
+ 0, flow->in_port,
+ GRAT_ARP_LOCK_NONE);
+ if (rev_tag) {
+ /* The log messages here could actually be useful in debugging,
+ * so keep the rate limit relatively high. */
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
+ VLOG_DBG_RL(&rl, "learned that "ETH_ADDR_FMT" is on port %"PRIu16,
+ ETH_ADDR_ARGS(flow->dl_src), flow->in_port);
+ tag_set_add(&wx->revalidate_set, rev_tag);
+ }
+ }
+
+ /* Determine output port. */
+ out_port = mac_learning_lookup_tag(wx->ml, flow->dl_dst, 0, tags,
+ NULL);
+ if (out_port < 0) {
+ add_output_group_action(actions, WX_GROUP_FLOOD, nf_output_iface);
+ } else if (out_port != flow->in_port) {
+ xflow_actions_add(actions, XFLOWAT_OUTPUT)->output.port = out_port;
+ *nf_output_iface = out_port;
+ } else {
+ /* Drop. */
+ }
+
+ return true;
+}
+
+static const struct ofhooks default_ofhooks = {
+ NULL,
+ default_normal_ofhook_cb,
+ NULL,
+ NULL
+};
--- /dev/null
- #include "vlog.h"
- #define THIS_MODULE VLM_wdp
+/*
+ * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <config.h>
+#include "wdp-provider.h"
+
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "coverage.h"
+#include "dynamic-string.h"
+#include "flow.h"
+#include "netdev.h"
+#include "netlink.h"
+#include "ofp-print.h"
+#include "ofpbuf.h"
+#include "packets.h"
+#include "poll-loop.h"
+#include "shash.h"
+#include "svec.h"
+#include "timeval.h"
+#include "util.h"
+#include "valgrind.h"
++#include "vlog.h"
+#include "wdp-xflow.h"
+
++VLOG_DEFINE_THIS_MODULE(wdp)
+\f
+/* wdp_rule */
+
+/* Initializes a new 'struct wdp_rule', copying in the 'n_actions' elements of
+ * 'actions'.
+ *
+ * The caller is responsible for initializing 'rule->cr'. The caller must also
+ * fill in 'rule->ofp_table_id', if the wdp has more than one table. */
+void
+wdp_rule_init(struct wdp_rule *rule, const union ofp_action *actions,
+ size_t n_actions)
+{
+ rule->actions = xmemdup(actions, n_actions * sizeof *actions);
+ rule->n_actions = n_actions;
+ rule->created = time_msec();
+ rule->idle_timeout = 0;
+ rule->hard_timeout = 0;
+ rule->ofp_table_id = 0;
+ rule->client_data = NULL;
+}
+
+/* Frees the data in 'rule'. */
+void
+wdp_rule_uninit(struct wdp_rule *rule)
+{
+ free(rule->actions);
+}
+\f
+/* wdp */
+
+static const struct wdp_class *base_wdp_classes[] = {
+ /* XXX none yet */
+};
+
+struct registered_wdp_class {
+ const struct wdp_class *wdp_class;
+ int refcount;
+};
+
+static struct shash wdp_classes = SHASH_INITIALIZER(&wdp_classes);
+
+/* Rate limit for individual messages going to or from the datapath, output at
+ * DBG level. This is very high because, if these are enabled, it is because
+ * we really need to see them. */
+static struct vlog_rate_limit wdpmsg_rl = VLOG_RATE_LIMIT_INIT(600, 600);
+
+/* Not really much point in logging many wdp errors. */
+static struct vlog_rate_limit error_rl = VLOG_RATE_LIMIT_INIT(9999, 5);
+
+static void log_operation(const struct wdp *, const char *operation,
+ int error);
+
+static void
+wdp_initialize(void)
+{
+ static int status = -1;
+
+ if (status < 0) {
+ int i;
+
+ status = 0;
+ for (i = 0; i < ARRAY_SIZE(base_wdp_classes); i++) {
+ wdp_register_provider(base_wdp_classes[i]);
+ }
+ wdp_xflow_register();
+ }
+}
+
+/* Performs periodic work needed by all the various kinds of wdps.
+ *
+ * If your program opens any wdps, it must call both this function and
+ * netdev_run() within its main poll loop. */
+void
+wdp_run(void)
+{
+ struct shash_node *node;
+ SHASH_FOR_EACH (node, &wdp_classes) {
+ const struct registered_wdp_class *registered_class = node->data;
+ if (registered_class->wdp_class->run) {
+ registered_class->wdp_class->run();
+ }
+ }
+}
+
+/* Arranges for poll_block() to wake up when wdp_run() needs to be called.
+ *
+ * If your program opens any wdps, it must call both this function and
+ * netdev_wait() within its main poll loop. */
+void
+wdp_wait(void)
+{
+ struct shash_node *node;
+ SHASH_FOR_EACH(node, &wdp_classes) {
+ const struct registered_wdp_class *registered_class = node->data;
+ if (registered_class->wdp_class->wait) {
+ registered_class->wdp_class->wait();
+ }
+ }
+}
+
+/* Registers a new datapath provider. After successful registration, new
+ * datapaths of that type can be opened using wdp_open(). */
+int
+wdp_register_provider(const struct wdp_class *new_class)
+{
+ struct registered_wdp_class *registered_class;
+
+ if (shash_find(&wdp_classes, new_class->type)) {
+ VLOG_WARN("attempted to register duplicate datapath provider: %s",
+ new_class->type);
+ return EEXIST;
+ }
+
+ registered_class = xmalloc(sizeof *registered_class);
+ registered_class->wdp_class = new_class;
+ registered_class->refcount = 0;
+
+ shash_add(&wdp_classes, new_class->type, registered_class);
+
+ return 0;
+}
+
+/* Unregisters a datapath provider. 'type' must have been previously
+ * registered and not currently be in use by any wdps. After unregistration
+ * new datapaths of that type cannot be opened using wdp_open(). */
+int
+wdp_unregister_provider(const char *type)
+{
+ struct shash_node *node;
+ struct registered_wdp_class *registered_class;
+
+ node = shash_find(&wdp_classes, type);
+ if (!node) {
+ VLOG_WARN("attempted to unregister a datapath provider that is not "
+ "registered: %s", type);
+ return EAFNOSUPPORT;
+ }
+
+ registered_class = node->data;
+ if (registered_class->refcount) {
+ VLOG_WARN("attempted to unregister in use datapath provider: %s",
+ type);
+ return EBUSY;
+ }
+
+ shash_delete(&wdp_classes, node);
+ free(registered_class);
+
+ return 0;
+}
+
+/* Clears 'types' and enumerates the types of all currently registered wdp
+ * providers into it. The caller must first initialize the svec. */
+void
+wdp_enumerate_types(struct svec *types)
+{
+ struct shash_node *node;
+
+ wdp_initialize();
+ svec_clear(types);
+
+ SHASH_FOR_EACH (node, &wdp_classes) {
+ const struct registered_wdp_class *registered_class = node->data;
+ svec_add(types, registered_class->wdp_class->type);
+ }
+}
+
+/* Clears 'names' and enumerates the names of all known created datapaths
+ * with the given 'type'. The caller must first initialize the svec. Returns 0
+ * if successful, otherwise a positive errno value.
+ *
+ * Some kinds of datapaths might not be practically enumerable. This is not
+ * considered an error. */
+int
+wdp_enumerate_names(const char *type, struct svec *names)
+{
+ const struct registered_wdp_class *registered_class;
+ const struct wdp_class *wdp_class;
+ int error;
+
+ wdp_initialize();
+ svec_clear(names);
+
+ registered_class = shash_find_data(&wdp_classes, type);
+ if (!registered_class) {
+ VLOG_WARN("could not enumerate unknown type: %s", type);
+ return EAFNOSUPPORT;
+ }
+
+ wdp_class = registered_class->wdp_class;
+ error = (wdp_class->enumerate
+ ? wdp_class->enumerate(wdp_class, names)
+ : 0);
+
+ if (error) {
+ VLOG_WARN("failed to enumerate %s datapaths: %s", wdp_class->type,
+ strerror(error));
+ }
+
+ return error;
+}
+
+/* Parses 'datapath_name', which is of the form type@name, into its
+ * component pieces. 'name' and 'type' must be freed by the caller. */
+void
+wdp_parse_name(const char *datapath_name_, char **name, char **type)
+{
+ char *datapath_name = xstrdup(datapath_name_);
+ char *separator;
+
+ separator = strchr(datapath_name, '@');
+ if (separator) {
+ *separator = '\0';
+ *type = datapath_name;
+ *name = xstrdup(separator + 1);
+ } else {
+ *name = datapath_name;
+ *type = NULL;
+ }
+}
+
+static int
+do_open(const char *name, const char *type, bool create, struct wdp **wdpp)
+{
+ struct wdp *wdp = NULL;
+ int error;
+ struct registered_wdp_class *registered_class;
+
+ wdp_initialize();
+
+ if (!type || *type == '\0') {
+ type = "system";
+ }
+
+ registered_class = shash_find_data(&wdp_classes, type);
+ if (!registered_class) {
+ VLOG_WARN("could not create datapath %s of unknown type %s", name,
+ type);
+ error = EAFNOSUPPORT;
+ goto exit;
+ }
+
+ error = registered_class->wdp_class->open(registered_class->wdp_class,
+ name, create, &wdp);
+ if (!error) {
+ registered_class->refcount++;
+ }
+
+exit:
+ *wdpp = error ? NULL : wdp;
+ return error;
+}
+
+/* Tries to open an existing datapath named 'name' and type 'type'. Will fail
+ * if no datapath with 'name' and 'type' exists. 'type' may be either NULL or
+ * the empty string to specify the default system type. Returns 0 if
+ * successful, otherwise a positive errno value. On success stores a pointer
+ * to the datapath in '*wdpp', otherwise a null pointer. */
+int
+wdp_open(const char *name, const char *type, struct wdp **wdpp)
+{
+ return do_open(name, type, false, wdpp);
+}
+
+/* Tries to create and open a new datapath with the given 'name' and 'type'.
+ * 'type' may be either NULL or the empty string to specify the default system
+ * type. Will fail if a datapath with 'name' and 'type' already exists.
+ * Returns 0 if successful, otherwise a positive errno value. On success
+ * stores a pointer to the datapath in '*wdpp', otherwise a null pointer. */
+int
+wdp_create(const char *name, const char *type, struct wdp **wdpp)
+{
+ return do_open(name, type, true, wdpp);
+}
+
+/* Tries to open a datapath with the given 'name' and 'type', creating it if it
+ * does not exist. 'type' may be either NULL or the empty string to specify
+ * the default system type. Returns 0 if successful, otherwise a positive
+ * errno value. On success stores a pointer to the datapath in '*wdpp',
+ * otherwise a null pointer. */
+int
+wdp_create_and_open(const char *name, const char *type, struct wdp **wdpp)
+{
+ int error;
+
+ error = wdp_create(name, type, wdpp);
+ if (error == EEXIST || error == EBUSY) {
+ error = wdp_open(name, type, wdpp);
+ if (error) {
+ VLOG_WARN("datapath %s already exists but cannot be opened: %s",
+ name, strerror(error));
+ }
+ } else if (error) {
+ VLOG_WARN("failed to create datapath %s: %s", name, strerror(error));
+ }
+ return error;
+}
+
+/* Closes and frees the connection to 'wdp'. Does not destroy the wdp
+ * itself; call wdp_delete() first, instead, if that is desirable. */
+void
+wdp_close(struct wdp *wdp)
+{
+ if (wdp) {
+ struct registered_wdp_class *registered_class;
+
+ registered_class = shash_find_data(&wdp_classes,
+ wdp->wdp_class->type);
+ assert(registered_class);
+ assert(registered_class->refcount);
+
+ registered_class->refcount--;
+ wdp_uninit(wdp, true);
+ }
+}
+
+/* Returns the name of datapath 'wdp' prefixed with the type
+ * (for use in log messages). */
+const char *
+wdp_name(const struct wdp *wdp)
+{
+ return wdp->full_name;
+}
+
+/* Returns the name of datapath 'wdp' without the type
+ * (for use in device names). */
+const char *
+wdp_base_name(const struct wdp *wdp)
+{
+ return wdp->base_name;
+}
+
+/* Enumerates all names that may be used to open 'wdp' into 'all_names'. The
+ * Linux datapath, for example, supports opening a datapath both by number,
+ * e.g. "wdp0", and by the name of the datapath's local port. For some
+ * datapaths, this might be an infinite set (e.g. in a file name, slashes may
+ * be duplicated any number of times), in which case only the names most likely
+ * to be used will be enumerated.
+ *
+ * The caller must already have initialized 'all_names'. Any existing names in
+ * 'all_names' will not be disturbed. */
+int
+wdp_get_all_names(const struct wdp *wdp, struct svec *all_names)
+{
+ if (wdp->wdp_class->get_all_names) {
+ int error = wdp->wdp_class->get_all_names(wdp, all_names);
+ if (error) {
+ VLOG_WARN_RL(&error_rl,
+ "failed to retrieve names for datpath %s: %s",
+ wdp_name(wdp), strerror(error));
+ }
+ return error;
+ } else {
+ svec_add(all_names, wdp_base_name(wdp));
+ return 0;
+ }
+}
+
+/* Destroys the datapath that 'wdp' is connected to, first removing all of
+ * its ports. After calling this function, it does not make sense to pass
+ * 'wdp' to any functions other than wdp_name() or wdp_close(). */
+int
+wdp_delete(struct wdp *wdp)
+{
+ int error;
+
+ COVERAGE_INC(wdp_destroy);
+
+ error = wdp->wdp_class->destroy(wdp);
+ log_operation(wdp, "delete", error);
+ return error;
+}
+
+/* Obtains the set of features supported by 'wdp'.
+ *
+ * If successful, returns 0 and stores in '*featuresp' a newly allocated
+ * "struct ofp_switch_features" that describes the features and ports supported
+ * by 'wdp'. The caller is responsible for initializing the header,
+ * datapath_id, and n_buffers members of the returned "struct
+ * ofp_switch_features". The caller must free the returned buffer (with
+ * ofpbuf_delete()) when it is no longer needed.
+ *
+ * On error, returns an OpenFlow error code (as constructed by ofp_mkerr()) and
+ * sets '*featuresp' to NULL. */
+int
+wdp_get_features(const struct wdp *wdp, struct ofpbuf **featuresp)
+{
+ int error = wdp->wdp_class->get_features(wdp, featuresp);
+ if (error) {
+ *featuresp = NULL;
+ }
+ return error;
+}
+
+/* Retrieves statistics for 'wdp' into 'stats'. Returns 0 if successful,
+ * otherwise a positive errno value. On error, clears 'stats' to
+ * all-bits-zero. */
+int
+wdp_get_wdp_stats(const struct wdp *wdp, struct wdp_stats *stats)
+{
+ int error = wdp->wdp_class->get_stats(wdp, stats);
+ if (error) {
+ memset(stats, 0, sizeof *stats);
+ }
+ log_operation(wdp, "get_stats", error);
+ return error;
+}
+
+/* Appends to 'stats' one or more 'struct ofp_table_stats' structures that
+ * represent the tables maintained by 'wdp'. Returns 0 if successful,
+ * otherwise an OpenFlow error code constructed with ofp_mkerr(). */
+int
+wdp_get_table_stats(const struct wdp *wdp, struct ofpbuf *stats)
+{
+ int error = wdp->wdp_class->get_table_stats(wdp, stats);
+ if (!error) {
+ assert(stats->size > sizeof(struct ofp_stats_reply));
+ assert(((stats->size - sizeof(struct ofp_stats_reply))
+ % sizeof(struct ofp_table_stats)) == 0);
+ }
+ log_operation(wdp, "get_table_stats", error);
+ return error;
+}
+
+/* Retrieves the current IP fragment handling policy for 'wdp' into
+ * '*drop_frags': true indicates that fragments are dropped, false indicates
+ * that fragments are treated in the same way as other IP packets (except that
+ * the L4 header cannot be read). Returns 0 if successful, otherwise a
+ * positive errno value. */
+int
+wdp_get_drop_frags(const struct wdp *wdp, bool *drop_frags)
+{
+ int error = wdp->wdp_class->get_drop_frags(wdp, drop_frags);
+ if (error) {
+ *drop_frags = false;
+ }
+ log_operation(wdp, "get_drop_frags", error);
+ return error;
+}
+
+/* Changes 'wdp''s treatment of IP fragments to 'drop_frags', whose meaning is
+ * the same as for the get_drop_frags member function. Returns 0 if
+ * successful, otherwise a positive errno value. EOPNOTSUPP indicates that
+ * 'wdp''s fragment dropping policy is not configurable. */
+int
+wdp_set_drop_frags(struct wdp *wdp, bool drop_frags)
+{
+ int error;
+ error = (wdp->wdp_class->set_drop_frags
+ ? wdp->wdp_class->set_drop_frags(wdp, drop_frags)
+ : EOPNOTSUPP);
+ log_operation(wdp, "set_drop_frags", error);
+ return error;
+}
+
+/* Clears the contents of 'port'. */
+void
+wdp_port_clear(struct wdp_port *port)
+{
+ memset(port, 0, sizeof *port);
+}
+
+/* Makes a deep copy of 'old' in 'port'. The caller may free 'port''s data
+ * with wdp_port_free(). */
+void
+wdp_port_copy(struct wdp_port *port, const struct wdp_port *old)
+{
+ port->netdev = old->netdev ? netdev_reopen(old->netdev) : NULL;
+ port->opp = old->opp;
+ port->devname = old->devname ? xstrdup(old->devname) : NULL;
+ port->internal = old->internal;
+}
+
+/* Frees the data that 'port' points to (but not 'port' itself). */
+void
+wdp_port_free(struct wdp_port *port)
+{
+ if (port) {
+ netdev_close(port->netdev);
+ free(port->devname);
+ }
+}
+
+/* Frees the data that each of the 'n' ports in 'ports' points to, and then
+ * frees 'ports' itself. */
+void
+wdp_port_array_free(struct wdp_port *ports, size_t n)
+{
+ size_t i;
+
+ for (i = 0; i < n; i++) {
+ wdp_port_free(&ports[i]);
+ }
+ free(ports);
+}
+
+/* Attempts to add 'devname' as a port on 'wdp':
+ *
+ * - If 'internal' is true, attempts to create a new internal port (a virtual
+ * port implemented in software) by that name.
+ *
+ * - If 'internal' is false, 'devname' must name an existing network device.
+ *
+ * If successful, returns 0 and sets '*port_nop' to the new port's OpenFlow
+ * port number (if 'port_nop' is non-null). On failure, returns a positive
+ * errno value and sets '*port_nop' to OFPP_NONE (if 'port_nop' is non-null).
+ *
+ * Some wildcarded datapaths might have fixed sets of ports. For these
+ * datapaths this function will always fail.
+ *
+ * Possible error return values include:
+ *
+ * - ENODEV: No device named 'devname' exists (if 'internal' is false).
+ *
+ * - EEXIST: A device named 'devname' already exists (if 'internal' is true).
+ *
+ * - EINVAL: Device 'devname' is not supported as part of a datapath (e.g. it
+ * is not an Ethernet device), or 'devname' is too long for a network
+ * device name (if 'internal' is true)
+ *
+ * - EFBIG: The datapath already has as many ports as it can support.
+ *
+ * - EOPNOTSUPP: 'wdp' has a fixed set of ports.
+ */
+int
+wdp_port_add(struct wdp *wdp, const char *devname,
+ bool internal, uint16_t *port_nop)
+{
+ uint16_t port_no;
+ int error;
+
+ COVERAGE_INC(wdp_port_add);
+
+ error = (wdp->wdp_class->port_add
+ ? wdp->wdp_class->port_add(wdp, devname, internal, &port_no)
+ : EOPNOTSUPP);
+ if (!error) {
+ VLOG_DBG_RL(&wdpmsg_rl, "%s: added %s as port %"PRIu16,
+ wdp_name(wdp), devname, port_no);
+ } else {
+ VLOG_WARN_RL(&error_rl, "%s: failed to add %s as port: %s",
+ wdp_name(wdp), devname, strerror(error));
+ port_no = OFPP_NONE;
+ }
+ if (port_nop) {
+ *port_nop = port_no;
+ }
+ return error;
+}
+
+/* Attempts to remove 'wdp''s port numbered 'port_no'. Returns 0 if
+ * successful, otherwise a positive errno value.
+ *
+ * Some wildcarded datapaths might have fixed sets of ports. For these
+ * datapaths this function will always fail.
+ *
+ * Possible error return values include:
+ *
+ * - EINVAL: 'port_no' is outside the valid range, or this particular port is
+ * not removable (e.g. it is the local port).
+ *
+ * - ENOENT: 'wdp' currently has no port numbered 'port_no'.
+ *
+ * - EOPNOTSUPP: 'wdp' has a fixed set of ports.
+ */
+int
+wdp_port_del(struct wdp *wdp, uint16_t port_no)
+{
+ int error;
+
+ COVERAGE_INC(wdp_port_del);
+
+ error = (wdp->wdp_class->port_del
+ ? wdp->wdp_class->port_del(wdp, port_no)
+ : EOPNOTSUPP);
+ log_operation(wdp, "port_del", error);
+ return error;
+}
+
+/* Looks up port number 'port_no' in 'wdp'. On success, returns 0 and
+ * initializes 'port' with port details. On failure, returns a positive errno
+ * value and clears the contents of 'port' (with wdp_port_clear()).
+ *
+ * The caller must not modify or free the returned wdp_port. Calling
+ * wdp_run() or wdp_port_poll() may free the returned wdp_port.
+ *
+ * Possible error return values include:
+ *
+ * - EINVAL: 'port_no' is outside the valid range.
+ *
+ * - ENOENT: 'wdp' currently has no port numbered 'port_no'.
+ */
+int
+wdp_port_query_by_number(const struct wdp *wdp, uint16_t port_no,
+ struct wdp_port *port)
+{
+ int error;
+
+ error = wdp->wdp_class->port_query_by_number(wdp, port_no, port);
+ if (!error) {
+ VLOG_DBG_RL(&wdpmsg_rl, "%s: port %"PRIu16" is device %s",
+ wdp_name(wdp), port_no, port->devname);
+ } else {
+ wdp_port_clear(port);
+ VLOG_WARN_RL(&error_rl, "%s: failed to query port %"PRIu16": %s",
+ wdp_name(wdp), port_no, strerror(error));
+ }
+ return error;
+}
+
+/* Same as wdp_port_query_by_number() except that it look for a port named
+ * 'devname' in 'wdp'.
+ *
+ * Possible error return values include:
+ *
+ * - ENODEV: No device named 'devname' exists.
+ *
+ * - ENOENT: 'devname' exists but it is not attached as a port on 'wdp'.
+ */
+int
+wdp_port_query_by_name(const struct wdp *wdp, const char *devname,
+ struct wdp_port *port)
+{
+ int error = wdp->wdp_class->port_query_by_name(wdp, devname, port);
+ if (!error) {
+ VLOG_DBG_RL(&wdpmsg_rl, "%s: device %s is on port %"PRIu16,
+ wdp_name(wdp), devname, port->opp.port_no);
+ } else {
+ wdp_port_clear(port);
+
+ /* Log level is DBG here because all the current callers are interested
+ * in whether 'wdp' actually has a port 'devname', so that it's not
+ * an issue worth logging if it doesn't. */
+ VLOG_DBG_RL(&error_rl, "%s: failed to query port %s: %s",
+ wdp_name(wdp), devname, strerror(error));
+ }
+ return error;
+}
+
+/* Looks up port number 'port_no' in 'wdp'. On success, returns 0 and stores
+ * a copy of the port's name in '*namep'. On failure, returns a positive errno
+ * value and stores NULL in '*namep'.
+ *
+ * Error return values are the same as for wdp_port_query_by_name().
+ *
+ * The caller is responsible for freeing '*namep' (with free()). */
+int
+wdp_port_get_name(struct wdp *wdp, uint16_t port_no, char **namep)
+{
+ struct wdp_port port;
+ int error;
+
+ error = wdp_port_query_by_number(wdp, port_no, &port);
+ *namep = port.devname;
+ port.devname = NULL;
+ wdp_port_free(&port);
+
+ return error;
+}
+
+/* Obtains a list of all the ports in 'wdp', in no particular order.
+ *
+ * If successful, returns 0 and sets '*portsp' to point to an array of struct
+ * wdp_port and '*n_portsp' to the number of pointers in the array. On
+ * failure, returns a positive errno value and sets '*portsp' to NULL and
+ * '*n_portsp' to 0.
+ *
+ * The caller is responsible for freeing '*portsp' and the individual wdp_port
+ * structures, e.g. with wdp_port_array_free(). */
+int
+wdp_port_list(const struct wdp *wdp,
+ struct wdp_port **portsp, size_t *n_portsp)
+{
+ int error;
+
+ error = wdp->wdp_class->port_list(wdp, portsp, n_portsp);
+ if (error) {
+ *portsp = NULL;
+ *n_portsp = 0;
+ }
+ log_operation(wdp, "port_list", error);
+ return error;
+}
+
+/* Updates the configuration for the port number 'port_no' within 'wdp' to
+ * 'config', which is a set of OpenFlow OFPPC_* constants in host byte order.
+ * Returns 0 if successful, otherwise an OpenFlow error code constructed with
+ * ofp_mkerr(). */
+int
+wdp_port_set_config(struct wdp *wdp, uint16_t port_no, uint32_t config)
+{
+ return wdp->wdp_class->port_set_config(wdp, port_no, config);
+}
+
+/* Polls for changes in the set of ports in 'wdp' since the last call to this
+ * function or, if this is the first call, since 'wdp' was opened. For each
+ * change, calls 'cb' passing 'aux' and:
+ *
+ * - For a port that has been added, OFPPR_ADD as 'reason' and the new port's
+ * "struct ofp_phy_port" as 'opp'.
+ *
+ * - For a port that has been removed, OFPPR_DELETE as 'reason' and the
+ * deleted port's former "struct ofp_phy_port" as 'opp'.
+ *
+ * - For a port whose configuration has changed, OFPPR_MODIFY as 'reason' and
+ * the modified port's new "struct ofp_phy_port" as 'opp'.
+ *
+ * 'opp' is in *host* byte order.
+ *
+ * Normally returns 0. May also return a positive errno value to indicate
+ * that something has gone wrong.
+ */
+int
+wdp_port_poll(struct wdp *wdp, wdp_port_poll_cb_func *cb, void *aux)
+{
+ return wdp->wdp_class->port_poll(wdp, cb, aux);
+}
+
+/* Arranges for the poll loop to wake up when 'port_poll' will call its
+ * callback. */
+int
+wdp_port_poll_wait(const struct wdp *wdp)
+{
+ return wdp->wdp_class->port_poll_wait(wdp);
+}
+
+/* Deletes all flows from 'wdp'. Returns 0 if successful, otherwise a
+ * positive errno value. */
+int
+wdp_flow_flush(struct wdp *wdp)
+{
+ int error;
+
+ COVERAGE_INC(wdp_flow_flush);
+
+ error = wdp->wdp_class->flow_flush(wdp);
+ log_operation(wdp, "flow_flush", error);
+ return error;
+}
+
+/* If 'wdp' contains exactly one flow exactly equal to 'flow' in one of the
+ * tables in the bit-mask in 'include', returns that flow. Otherwise (if there
+ * is no match or more than one match), returns null.
+ *
+ * A flow in table 'table_id' is a candidate for matching if 'include & (1u <<
+ * table_id)' is nonzero. */
+struct wdp_rule *
+wdp_flow_get(struct wdp *wdp, const flow_t *flow, unsigned int include)
+{
+ return wdp->wdp_class->flow_get(wdp, flow, include);
+}
+
+struct wdp_rule *
+wdp_flow_match(struct wdp *wdp, const flow_t *flow)
+{
+ return wdp->wdp_class->flow_match(wdp, flow);
+}
+
+/* Iterates through all of the flows in 'wdp''s flow table, passing each flow
+ * that matches the specified search criteria to 'callback' along with 'aux'.
+ *
+ * Flows are filtered out in two ways. First, based on the bit-mask in
+ * 'include': wdp_rule 'wr' is included only if 'include & (1u <<
+ * wr->ofp_table_id)' is nonzero.
+ *
+ * Flows are also filtered out based on 'target': on a field-by-field basis, a
+ * flow is included if 'target' wildcards that field or if the flow and
+ * 'target' both have the same exact value for the field. A flow is excluded
+ * if any field does not match based on these criteria.
+ *
+ * Ignores 'target->priority'.
+ *
+ * 'callback' is allowed to delete the rule that is passed as its argument. It
+ * may modify any flow in 'wdp', e.g. changing their actions. 'callback' must
+ * not delete flows from 'wdp' other than its argument flow, nor may it insert
+ * new flows into 'wdp'. */
+void
+wdp_flow_for_each_match(const struct wdp *wdp, const flow_t *target,
+ unsigned int include,
+ wdp_flow_cb_func *callback, void *aux)
+{
+ wdp->wdp_class->flow_for_each_match(wdp, target, include, callback, aux);
+}
+
+int
+wdp_flow_get_stats(const struct wdp *wdp, const struct wdp_rule *rule,
+ struct wdp_flow_stats *stats)
+{
+ int error = wdp->wdp_class->flow_get_stats(wdp, rule, stats);
+ if (error) {
+ memset(stats, 0, sizeof *stats);
+ }
+ return error;
+}
+
+bool
+wdp_flow_overlaps(const struct wdp *wdp, const flow_t *flow)
+{
+ return wdp->wdp_class->flow_overlaps(wdp, flow);
+}
+
+int
+wdp_flow_put(struct wdp *wdp, struct wdp_flow_put *put,
+ struct wdp_flow_stats *old_stats, struct wdp_rule **rulep)
+{
+ int error = wdp->wdp_class->flow_put(wdp, put, old_stats, rulep);
+ if (error) {
+ if (old_stats) {
+ memset(old_stats, 0, sizeof *old_stats);
+ }
+ if (rulep) {
+ *rulep = NULL;
+ }
+ }
+ return error;
+}
+
+int
+wdp_flow_delete(struct wdp *wdp, struct wdp_rule *rule,
+ struct wdp_flow_stats *final_stats)
+{
+ int error = wdp->wdp_class->flow_delete(wdp, rule, final_stats);
+ if (error && final_stats) {
+ memset(final_stats, 0, sizeof *final_stats);
+ }
+ return error;
+}
+
+int
+wdp_flow_inject(struct wdp *wdp, struct wdp_rule *rule,
+ uint16_t in_port, const struct ofpbuf *packet)
+{
+ return wdp->wdp_class->flow_inject(wdp, rule, in_port, packet);
+}
+
+int
+wdp_execute(struct wdp *wdp, uint16_t in_port,
+ const union ofp_action actions[], size_t n_actions,
+ const struct ofpbuf *buf)
+{
+ int error;
+
+ COVERAGE_INC(wdp_execute);
+ if (n_actions > 0) {
+ error = wdp->wdp_class->execute(wdp, in_port, actions,
+ n_actions, buf);
+ } else {
+ error = 0;
+ }
+ return error;
+}
+
+/* Retrieves 'wdp''s "listen mask" into '*listen_mask'. Each bit set in
+ * '*listen_mask' indicates that wdp_recv() will receive messages of the
+ * corresponding WDP_CHAN_* type. Returns 0 if successful, otherwise a
+ * positive errno value. */
+int
+wdp_recv_get_mask(const struct wdp *wdp, int *listen_mask)
+{
+ int error = wdp->wdp_class->recv_get_mask(wdp, listen_mask);
+ if (error) {
+ *listen_mask = 0;
+ }
+ log_operation(wdp, "recv_get_mask", error);
+ return error;
+}
+
+/* Sets 'wdp''s "listen mask" to 'listen_mask'. Each bit set in
+ * '*listen_mask' requests that wdp_recv() receive messages of the
+ * corresponding WDP_CHAN_* type. Returns 0 if successful, otherwise a
+ * positive errno value. */
+int
+wdp_recv_set_mask(struct wdp *wdp, int listen_mask)
+{
+ int error = wdp->wdp_class->recv_set_mask(wdp, listen_mask);
+ log_operation(wdp, "recv_set_mask", error);
+ return error;
+}
+
+/* Retrieve the sFlow sampling probability. '*probability' is expressed as the
+ * number of packets out of UINT_MAX to sample, e.g. probability/UINT_MAX is
+ * the probability of sampling a given packet.
+ *
+ * Returns 0 if successful, otherwise a positive errno value. EOPNOTSUPP
+ * indicates that 'wdp' does not support sFlow sampling. */
+int
+wdp_get_sflow_probability(const struct wdp *wdp, uint32_t *probability)
+{
+ int error = (wdp->wdp_class->get_sflow_probability
+ ? wdp->wdp_class->get_sflow_probability(wdp, probability)
+ : EOPNOTSUPP);
+ if (error) {
+ *probability = 0;
+ }
+ log_operation(wdp, "get_sflow_probability", error);
+ return error;
+}
+
+/* Set the sFlow sampling probability. 'probability' is expressed as the
+ * number of packets out of UINT_MAX to sample, e.g. probability/UINT_MAX is
+ * the probability of sampling a given packet.
+ *
+ * Returns 0 if successful, otherwise a positive errno value. EOPNOTSUPP
+ * indicates that 'wdp' does not support sFlow sampling. */
+int
+wdp_set_sflow_probability(struct wdp *wdp, uint32_t probability)
+{
+ int error = (wdp->wdp_class->set_sflow_probability
+ ? wdp->wdp_class->set_sflow_probability(wdp, probability)
+ : EOPNOTSUPP);
+ log_operation(wdp, "set_sflow_probability", error);
+ return error;
+}
+
+/* Attempts to receive a message from 'wdp'. If successful, stores the
+ * message into '*packetp'. Only messages of the types selected with
+ * wdp_set_listen_mask() will ordinarily be received (but if a message type
+ * is enabled and then later disabled, some stragglers might pop up).
+ *
+ * Returns 0 if successful, otherwise a positive errno value. Returns EAGAIN
+ * if no message is immediately available. */
+int
+wdp_recv(struct wdp *wdp, struct wdp_packet *packet)
+{
+ int error = wdp->wdp_class->recv(wdp, packet);
+ if (!error) {
+ /* XXX vlog_dbg received packet */
+ } else {
+ memset(packet, 0, sizeof *packet);
+ packet->channel = -1;
+ }
+ return error;
+}
+
+/* Discards all messages that would otherwise be received by wdp_recv() on
+ * 'wdp'. Returns 0 if successful, otherwise a positive errno value. */
+int
+wdp_recv_purge(struct wdp *wdp)
+{
+ COVERAGE_INC(wdp_purge);
+ return wdp->wdp_class->recv_purge(wdp);
+}
+
+/* Arranges for the poll loop to wake up when 'wdp' has a message queued to be
+ * received with wdp_recv(). */
+void
+wdp_recv_wait(struct wdp *wdp)
+{
+ wdp->wdp_class->recv_wait(wdp);
+}
+
+/* Obtains the NetFlow engine type and engine ID for 'wdp' into '*engine_type'
+ * and '*engine_id', respectively. */
+void
+wdp_get_netflow_ids(const struct wdp *wdp,
+ uint8_t *engine_type, uint8_t *engine_id)
+{
+ *engine_type = wdp->netflow_engine_type;
+ *engine_id = wdp->netflow_engine_id;
+}
+\f
+/* ovs-vswitchd interface.
+ *
+ * This needs to be redesigned, because it only makes sense for wdp-xflow. The
+ * ofhooks are currently the key to implementing the OFPP_NORMAL feature of
+ * ovs-vswitchd. */
+
+/* Sets the ofhooks for 'wdp' to 'ofhooks' with the accompanying 'aux' value.
+ * Only the xflow implementation of wdp is expected to implement this function;
+ * other implementations should just set it to NULL.
+ *
+ * The ofhooks are currently the key to implementing the OFPP_NORMAL feature of
+ * ovs-vswitchd. This design is not adequate for the long term; it needs to be
+ * redone.
+ *
+ * Returns 0 if successful, otherwise a positive errno value. */
+int
+wdp_set_ofhooks(struct wdp *wdp, const struct ofhooks *ofhooks, void *aux)
+{
+ int error;
+ error = (wdp->wdp_class->set_ofhooks
+ ? wdp->wdp_class->set_ofhooks(wdp, ofhooks, aux)
+ : EOPNOTSUPP);
+ log_operation(wdp, "set_ofhooks", error);
+ return error;
+}
+
+/* Tell 'wdp' to revalidate all the flows that match 'tag'.
+ *
+ * This needs to be redesigned, because it only makes sense for wdp-xflow.
+ * Other implementations cannot practically use this interface and should just
+ * set this to NULL. */
+void
+wdp_revalidate(struct wdp *wdp, tag_type tag)
+{
+ if (wdp->wdp_class->revalidate) {
+ wdp->wdp_class->revalidate(wdp, tag);
+ }
+}
+
+/* Tell 'wdp' to revalidate every flow. (This is not the same as calling
+ * 'revalidate' with all-1-bits for 'tag' because it also revalidates flows
+ * that do not have any tag at all.)
+ *
+ * This needs to be redesigned, because it only makes sense for wdp-xflow.
+ * Other implementations cannot practically use this interface and should just
+ * set this to NULL. */
+void
+wdp_revalidate_all(struct wdp *wdp)
+{
+ if (wdp->wdp_class->revalidate_all) {
+ wdp->wdp_class->revalidate_all(wdp);
+ }
+}
+\f
+/* Returns a copy of 'old'. The packet's payload, if any, is copied as well,
+ * but if it is longer than 'trim' bytes it is truncated to that length. */
+struct wdp_packet *
+wdp_packet_clone(const struct wdp_packet *old, size_t trim)
+{
+ struct wdp_packet *new = xmemdup(old, sizeof *old);
+ if (old->payload) {
+ new->payload = ofpbuf_clone_data(old->payload->data,
+ MIN(trim, old->payload->size));
+ }
+ return new;
+}
+
+void
+wdp_packet_destroy(struct wdp_packet *packet)
+{
+ if (packet) {
+ ofpbuf_delete(packet->payload);
+ free(packet);
+ }
+}
+
+void
+wdp_init(struct wdp *wdp, const struct wdp_class *wdp_class,
+ const char *name,
+ uint8_t netflow_engine_type, uint8_t netflow_engine_id)
+{
+ wdp->wdp_class = wdp_class;
+ wdp->base_name = xstrdup(name);
+ wdp->full_name = xasprintf("%s@%s", wdp_class->type, name);
+ wdp->netflow_engine_type = netflow_engine_type;
+ wdp->netflow_engine_id = netflow_engine_id;
+}
+
+/* Undoes the results of initialization.
+ *
+ * Normally this function only needs to be called from wdp_close().
+ * However, it may be called by providers due to an error on opening
+ * that occurs after initialization. It this case wdp_close() would
+ * never be called. */
+void
+wdp_uninit(struct wdp *wdp, bool close)
+{
+ char *base_name = wdp->base_name;
+ char *full_name = wdp->full_name;
+
+ if (close) {
+ wdp->wdp_class->close(wdp);
+ }
+
+ free(base_name);
+ free(full_name);
+}
+\f
+static void
+log_operation(const struct wdp *wdp, const char *operation, int error)
+{
+ if (!error) {
+ VLOG_DBG_RL(&wdpmsg_rl, "%s: %s success", wdp_name(wdp), operation);
+ } else {
+ VLOG_WARN_RL(&error_rl, "%s: %s failed (%s)",
+ wdp_name(wdp), operation, strerror(error));
+ }
+}
#include "svec.h"
#include "timeval.h"
#include "util.h"
+ #include "vlog.h"
+#include "xfif.h"
- #include "vlog.h"
- #define THIS_MODULE VLM_dpctl
+ VLOG_DEFINE_THIS_MODULE(dpctl)
static const struct command all_commands[];
#include "timeval.h"
#include "util.h"
#include "vconn.h"
+ #include "vlog.h"
+#include "xfif.h"
#include "xtoxll.h"
- #include "vlog.h"
- #define THIS_MODULE VLM_ofctl
+ VLOG_DEFINE_THIS_MODULE(ofctl)
#define DEFAULT_IDLE_TIMEOUT 60
#include "unixctl.h"
#include "util.h"
#include "vconn.h"
+ #include "vlog.h"
+#include "xfif.h"
- #include "vlog.h"
- #define THIS_MODULE VLM_openflowd
+ VLOG_DEFINE_THIS_MODULE(openflowd)
/* Settings that may be configured by the user. */
struct ofsettings {
#include "vconn.h"
#include "vswitchd/vswitch-idl.h"
#include "xenserver.h"
+ #include "vlog.h"
+#include "xfif.h"
#include "xtoxll.h"
#include "sflow_api.h"
struct shash_node *node;
/* Get the set of interfaces currently in this datapath. */
- dpif_port_list(br->dpif, &dpif_ports, &n_dpif_ports);
+ xfif_port_list(br->xfif, &xfif_ports, &n_xfif_ports);
shash_init(&cur_ifaces);
- for (i = 0; i < n_dpif_ports; i++) {
- const char *name = dpif_ports[i].devname;
+ for (i = 0; i < n_xfif_ports; i++) {
+ const char *name = xfif_ports[i].devname;
- if (!shash_find(&cur_ifaces, name)) {
- shash_add(&cur_ifaces, name, NULL);
- }
+ shash_add_once(&cur_ifaces, name, NULL);
}
- free(dpif_ports);
+ free(xfif_ports);
/* Get the set of interfaces we want on this datapath. */
bridge_get_all_ifaces(br, &want_ifaces);
#include "unixctl.h"
#include "util.h"
#include "vconn.h"
+ #include "vlog.h"
#include "vswitchd/vswitch-idl.h"
+#include "xfif.h"
- #include "vlog.h"
- #define THIS_MODULE VLM_vswitchd
+ VLOG_DEFINE_THIS_MODULE(vswitchd)
static unixctl_cb_func ovs_vswitchd_exit;
git://git.onelab.eu / sliver-openvswitch.git / commitdiff