#include "packets.h"
#include "poll-loop.h"
#include "random.h"
+#include "seq.h"
#include "shash.h"
#include "sset.h"
#include "timeval.h"
+#include "unixctl.h"
#include "util.h"
#include "vlog.h"
char *name;
int open_cnt;
bool destroyed;
+ int max_mtu; /* Maximum MTU of any port added so far. */
struct dp_netdev_queue queues[N_QUEUES];
struct hmap flow_table; /* Flow table. */
+ struct seq *queue_seq; /* Incremented whenever a packet is queued. */
/* Statistics. */
long long int n_hit; /* Number of flow table matches. */
/* Ports. */
struct dp_netdev_port *ports[MAX_PORTS];
struct list port_list;
- unsigned int serial;
+ struct seq *port_seq; /* Incremented whenever a port changes. */
};
/* A port in a netdev-based datapath. */
struct dp_netdev_port {
- int port_no; /* Index into dp_netdev's 'ports'. */
+ odp_port_t port_no; /* Index into dp_netdev's 'ports'. */
struct list node; /* Element in dp_netdev's 'port_list'. */
struct netdev *netdev;
struct netdev_saved_flags *sf;
struct dpif_netdev {
struct dpif dpif;
struct dp_netdev *dp;
- unsigned int dp_serial;
+ uint64_t last_port_seq;
};
/* All netdev-based datapaths. */
static struct shash dp_netdevs = SHASH_INITIALIZER(&dp_netdevs);
-/* Maximum port MTU seen so far. */
-static int max_mtu = ETH_PAYLOAD_MAX;
+/* Global lock for all data. */
+static struct ovs_mutex dp_netdev_mutex = OVS_MUTEX_INITIALIZER;
-static int get_port_by_number(struct dp_netdev *, uint32_t port_no,
+static int get_port_by_number(struct dp_netdev *, odp_port_t port_no,
struct dp_netdev_port **portp);
static int get_port_by_name(struct dp_netdev *, const char *devname,
struct dp_netdev_port **portp);
static void dp_netdev_free(struct dp_netdev *);
static void dp_netdev_flow_flush(struct dp_netdev *);
static int do_add_port(struct dp_netdev *, const char *devname,
- const char *type, uint32_t port_no);
-static int do_del_port(struct dp_netdev *, uint32_t port_no);
+ const char *type, odp_port_t port_no);
+static int do_del_port(struct dp_netdev *, odp_port_t port_no);
static int dpif_netdev_open(const struct dpif_class *, const char *name,
bool create, struct dpif **);
static int dp_netdev_output_userspace(struct dp_netdev *, const struct ofpbuf *,
static void dp_netdev_port_input(struct dp_netdev *dp,
struct dp_netdev_port *port,
struct ofpbuf *packet, uint32_t skb_priority,
- uint32_t skb_mark, const struct flow_tnl *tnl);
+ uint32_t pkt_mark, const struct flow_tnl *tnl);
static struct dpif_netdev *
dpif_netdev_cast(const struct dpif *dpif)
{
struct shash_node *node;
+ ovs_mutex_lock(&dp_netdev_mutex);
SHASH_FOR_EACH(node, &dp_netdevs) {
sset_add(all_dps, node->name);
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
return 0;
}
return class != &dpif_netdev_class;
}
+static bool
+dpif_netdev_class_is_planetlab(const struct dpif_class *class)
+{
+ return class == &dpif_planetlab_class;
+}
+
static const char *
dpif_netdev_port_open_type(const struct dpif_class *class, const char *type)
{
return strcmp(type, "internal") ? type
+ : dpif_netdev_class_is_planetlab(class) ? "pltap"
: dpif_netdev_class_is_dummy(class) ? "dummy"
: "tap";
}
dpif = xmalloc(sizeof *dpif);
dpif_init(&dpif->dpif, dp->class, dp->name, netflow_id >> 8, netflow_id);
dpif->dp = dp;
- dpif->dp_serial = dp->serial;
+ dpif->last_port_seq = seq_read(dp->port_seq);
return &dpif->dpif;
}
-static int
+/* Choose an unused, non-zero port number and return it on success.
+ * Return ODPP_NONE on failure. */
+static odp_port_t
choose_port(struct dp_netdev *dp, const char *name)
{
- int port_no;
+ uint32_t port_no;
- if (dp->class != &dpif_netdev_class) {
+ if (dp->class != &dpif_netdev_class &&
+ dp->class != &dpif_planetlab_class) {
const char *p;
int start_no = 0;
port_no = start_no + strtol(p, NULL, 10);
if (port_no > 0 && port_no < MAX_PORTS
&& !dp->ports[port_no]) {
- return port_no;
+ return u32_to_odp(port_no);
}
break;
}
for (port_no = 1; port_no < MAX_PORTS; port_no++) {
if (!dp->ports[port_no]) {
- return port_no;
+ return u32_to_odp(port_no);
}
}
- return -1;
+ return ODPP_NONE;
}
static int
dp->class = class;
dp->name = xstrdup(name);
dp->open_cnt = 0;
+ dp->max_mtu = ETH_PAYLOAD_MAX;
for (i = 0; i < N_QUEUES; i++) {
dp->queues[i].head = dp->queues[i].tail = 0;
}
+ dp->queue_seq = seq_create();
hmap_init(&dp->flow_table);
list_init(&dp->port_list);
+ dp->port_seq = seq_create();
- error = do_add_port(dp, name, "internal", OVSP_LOCAL);
+ error = do_add_port(dp, name, "internal", ODPP_LOCAL);
if (error) {
dp_netdev_free(dp);
return error;
bool create, struct dpif **dpifp)
{
struct dp_netdev *dp;
+ int error;
+ ovs_mutex_lock(&dp_netdev_mutex);
dp = shash_find_data(&dp_netdevs, name);
if (!dp) {
- if (!create) {
- return ENODEV;
- } else {
- int error = create_dp_netdev(name, class, &dp);
- if (error) {
- return error;
- }
- ovs_assert(dp != NULL);
- }
+ error = create ? create_dp_netdev(name, class, &dp) : ENODEV;
} else {
- if (dp->class != class) {
- return EINVAL;
- } else if (create) {
- return EEXIST;
- }
+ error = (dp->class != class ? EINVAL
+ : create ? EEXIST
+ : 0);
+ }
+ if (!error) {
+ *dpifp = create_dpif_netdev(dp);
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
- *dpifp = create_dpif_netdev(dp);
- return 0;
+ return error;
}
static void
do_del_port(dp, port->port_no);
}
dp_netdev_purge_queues(dp);
+ seq_destroy(dp->queue_seq);
hmap_destroy(&dp->flow_table);
+ seq_destroy(dp->port_seq);
free(dp->name);
free(dp);
}
dpif_netdev_close(struct dpif *dpif)
{
struct dp_netdev *dp = get_dp_netdev(dpif);
+
+ ovs_mutex_lock(&dp_netdev_mutex);
+
ovs_assert(dp->open_cnt > 0);
if (--dp->open_cnt == 0 && dp->destroyed) {
shash_find_and_delete(&dp_netdevs, dp->name);
dp_netdev_free(dp);
}
free(dpif);
+
+ ovs_mutex_unlock(&dp_netdev_mutex);
}
static int
dpif_netdev_destroy(struct dpif *dpif)
{
struct dp_netdev *dp = get_dp_netdev(dpif);
+
+ ovs_mutex_lock(&dp_netdev_mutex);
dp->destroyed = true;
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
return 0;
}
dpif_netdev_get_stats(const struct dpif *dpif, struct dpif_dp_stats *stats)
{
struct dp_netdev *dp = get_dp_netdev(dpif);
+
+ ovs_mutex_lock(&dp_netdev_mutex);
stats->n_flows = hmap_count(&dp->flow_table);
stats->n_hit = dp->n_hit;
stats->n_missed = dp->n_missed;
stats->n_lost = dp->n_lost;
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
return 0;
}
static int
do_add_port(struct dp_netdev *dp, const char *devname, const char *type,
- uint32_t port_no)
+ odp_port_t port_no)
{
struct netdev_saved_flags *sf;
struct dp_netdev_port *port;
struct netdev *netdev;
struct netdev_rx *rx;
+ enum netdev_flags flags;
const char *open_type;
int mtu;
int error;
if (error) {
return error;
}
- /* XXX reject loopback devices */
/* XXX reject non-Ethernet devices */
+ netdev_get_flags(netdev, &flags);
+ if (flags & NETDEV_LOOPBACK) {
+ VLOG_ERR("%s: cannot add a loopback device", devname);
+ netdev_close(netdev);
+ return EINVAL;
+ }
+
error = netdev_rx_open(netdev, &rx);
if (error
&& !(error == EOPNOTSUPP && dpif_netdev_class_is_dummy(dp->class))) {
VLOG_ERR("%s: cannot receive packets on this network device (%s)",
- devname, strerror(errno));
+ devname, ovs_strerror(errno));
netdev_close(netdev);
return error;
}
port->type = xstrdup(type);
error = netdev_get_mtu(netdev, &mtu);
- if (!error && mtu > max_mtu) {
- max_mtu = mtu;
+ if (!error && mtu > dp->max_mtu) {
+ dp->max_mtu = mtu;
}
list_push_back(&dp->port_list, &port->node);
- dp->ports[port_no] = port;
- dp->serial++;
+ dp->ports[odp_to_u32(port_no)] = port;
+ seq_change(dp->port_seq);
return 0;
}
static int
dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev,
- uint32_t *port_nop)
+ odp_port_t *port_nop)
{
struct dp_netdev *dp = get_dp_netdev(dpif);
char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
const char *dpif_port;
- int port_no;
+ odp_port_t port_no;
+ int error;
+ ovs_mutex_lock(&dp_netdev_mutex);
dpif_port = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf);
- if (*port_nop != UINT32_MAX) {
- if (*port_nop >= MAX_PORTS) {
- return EFBIG;
- } else if (dp->ports[*port_nop]) {
- return EBUSY;
+ if (*port_nop != ODPP_NONE) {
+ uint32_t port_idx = odp_to_u32(*port_nop);
+ if (port_idx >= MAX_PORTS) {
+ error = EFBIG;
+ } else if (dp->ports[port_idx]) {
+ error = EBUSY;
+ } else {
+ error = 0;
+ port_no = *port_nop;
}
- port_no = *port_nop;
} else {
port_no = choose_port(dp, dpif_port);
+ error = port_no == ODPP_NONE ? EFBIG : 0;
}
- if (port_no >= 0) {
+ if (!error) {
*port_nop = port_no;
- return do_add_port(dp, dpif_port, netdev_get_type(netdev), port_no);
+ error = do_add_port(dp, dpif_port, netdev_get_type(netdev), port_no);
}
- return EFBIG;
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
+ return error;
}
static int
-dpif_netdev_port_del(struct dpif *dpif, uint32_t port_no)
+dpif_netdev_port_del(struct dpif *dpif, odp_port_t port_no)
{
struct dp_netdev *dp = get_dp_netdev(dpif);
- return port_no == OVSP_LOCAL ? EINVAL : do_del_port(dp, port_no);
+ int error;
+
+ ovs_mutex_lock(&dp_netdev_mutex);
+ error = port_no == ODPP_LOCAL ? EINVAL : do_del_port(dp, port_no);
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
+ return error;
}
static bool
-is_valid_port_number(uint32_t port_no)
+is_valid_port_number(odp_port_t port_no)
{
- return port_no < MAX_PORTS;
+ return odp_to_u32(port_no) < MAX_PORTS;
}
static int
get_port_by_number(struct dp_netdev *dp,
- uint32_t port_no, struct dp_netdev_port **portp)
+ odp_port_t port_no, struct dp_netdev_port **portp)
{
if (!is_valid_port_number(port_no)) {
*portp = NULL;
return EINVAL;
} else {
- *portp = dp->ports[port_no];
+ *portp = dp->ports[odp_to_u32(port_no)];
return *portp ? 0 : ENOENT;
}
}
}
static int
-do_del_port(struct dp_netdev *dp, uint32_t port_no)
+do_del_port(struct dp_netdev *dp, odp_port_t port_no)
{
struct dp_netdev_port *port;
int error;
}
list_remove(&port->node);
- dp->ports[port->port_no] = NULL;
- dp->serial++;
+ dp->ports[odp_to_u32(port_no)] = NULL;
+ seq_change(dp->port_seq);
netdev_close(port->netdev);
netdev_restore_flags(port->sf);
}
static int
-dpif_netdev_port_query_by_number(const struct dpif *dpif, uint32_t port_no,
+dpif_netdev_port_query_by_number(const struct dpif *dpif, odp_port_t port_no,
struct dpif_port *dpif_port)
{
struct dp_netdev *dp = get_dp_netdev(dpif);
struct dp_netdev_port *port;
int error;
+ ovs_mutex_lock(&dp_netdev_mutex);
error = get_port_by_number(dp, port_no, &port);
if (!error && dpif_port) {
answer_port_query(port, dpif_port);
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
return error;
}
struct dp_netdev_port *port;
int error;
+ ovs_mutex_lock(&dp_netdev_mutex);
error = get_port_by_name(dp, devname, &port);
if (!error && dpif_port) {
answer_port_query(port, dpif_port);
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
return error;
}
-static int
+static uint32_t
dpif_netdev_get_max_ports(const struct dpif *dpif OVS_UNUSED)
{
return MAX_PORTS;
dpif_netdev_flow_flush(struct dpif *dpif)
{
struct dp_netdev *dp = get_dp_netdev(dpif);
+
+ ovs_mutex_lock(&dp_netdev_mutex);
dp_netdev_flow_flush(dp);
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
return 0;
}
struct dp_netdev_port_state {
- uint32_t port_no;
+ odp_port_t port_no;
char *name;
};
{
struct dp_netdev_port_state *state = state_;
struct dp_netdev *dp = get_dp_netdev(dpif);
- uint32_t port_no;
+ uint32_t port_idx;
- for (port_no = state->port_no; port_no < MAX_PORTS; port_no++) {
- struct dp_netdev_port *port = dp->ports[port_no];
+ ovs_mutex_lock(&dp_netdev_mutex);
+ for (port_idx = odp_to_u32(state->port_no);
+ port_idx < MAX_PORTS; port_idx++) {
+ struct dp_netdev_port *port = dp->ports[port_idx];
if (port) {
free(state->name);
state->name = xstrdup(netdev_get_name(port->netdev));
dpif_port->name = state->name;
dpif_port->type = port->type;
dpif_port->port_no = port->port_no;
- state->port_no = port_no + 1;
+ state->port_no = u32_to_odp(port_idx + 1);
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
return 0;
}
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
return EOF;
}
dpif_netdev_port_poll(const struct dpif *dpif_, char **devnamep OVS_UNUSED)
{
struct dpif_netdev *dpif = dpif_netdev_cast(dpif_);
- if (dpif->dp_serial != dpif->dp->serial) {
- dpif->dp_serial = dpif->dp->serial;
- return ENOBUFS;
+ uint64_t new_port_seq;
+ int error;
+
+ ovs_mutex_lock(&dp_netdev_mutex);
+ new_port_seq = seq_read(dpif->dp->port_seq);
+ if (dpif->last_port_seq != new_port_seq) {
+ dpif->last_port_seq = new_port_seq;
+ error = ENOBUFS;
} else {
- return EAGAIN;
+ error = EAGAIN;
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
+ return error;
}
static void
dpif_netdev_port_poll_wait(const struct dpif *dpif_)
{
struct dpif_netdev *dpif = dpif_netdev_cast(dpif_);
- if (dpif->dp_serial != dpif->dp->serial) {
- poll_immediate_wake();
- }
+
+ ovs_mutex_lock(&dp_netdev_mutex);
+ seq_wait(dpif->dp->port_seq, dpif->last_port_seq);
+ ovs_mutex_unlock(&dp_netdev_mutex);
}
static struct dp_netdev_flow *
dpif_netdev_flow_from_nlattrs(const struct nlattr *key, uint32_t key_len,
struct flow *flow)
{
+ odp_port_t in_port;
+
if (odp_flow_key_to_flow(key, key_len, flow) != ODP_FIT_PERFECT) {
/* This should not happen: it indicates that odp_flow_key_from_flow()
* and odp_flow_key_to_flow() disagree on the acceptable form of a
return EINVAL;
}
- if (flow->in_port < OFPP_MAX
- ? flow->in_port >= MAX_PORTS
- : flow->in_port != OFPP_LOCAL && flow->in_port != OFPP_NONE) {
+ in_port = flow->in_port.odp_port;
+ if (!is_valid_port_number(in_port) && in_port != ODPP_NONE) {
return EINVAL;
}
return error;
}
+ ovs_mutex_lock(&dp_netdev_mutex);
flow = dp_netdev_lookup_flow(dp, &key);
- if (!flow) {
- return ENOENT;
+ if (flow) {
+ if (stats) {
+ get_dpif_flow_stats(flow, stats);
+ }
+ if (actionsp) {
+ *actionsp = ofpbuf_clone_data(flow->actions, flow->actions_len);
+ }
+ } else {
+ error = ENOENT;
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
- if (stats) {
- get_dpif_flow_stats(flow, stats);
- }
- if (actionsp) {
- *actionsp = ofpbuf_clone_data(flow->actions, flow->actions_len);
- }
- return 0;
+ return error;
}
static int
return error;
}
+ ovs_mutex_lock(&dp_netdev_mutex);
flow = dp_netdev_lookup_flow(dp, &key);
if (!flow) {
if (put->flags & DPIF_FP_CREATE) {
if (put->stats) {
memset(put->stats, 0, sizeof *put->stats);
}
- return dp_netdev_flow_add(dp, &key, put->actions,
- put->actions_len);
+ error = dp_netdev_flow_add(dp, &key, put->actions,
+ put->actions_len);
} else {
- return EFBIG;
+ error = EFBIG;
}
} else {
- return ENOENT;
+ error = ENOENT;
}
} else {
if (put->flags & DPIF_FP_MODIFY) {
- int error = set_flow_actions(flow, put->actions, put->actions_len);
+ error = set_flow_actions(flow, put->actions, put->actions_len);
if (!error) {
if (put->stats) {
get_dpif_flow_stats(flow, put->stats);
clear_stats(flow);
}
}
- return error;
} else {
- return EEXIST;
+ error = EEXIST;
}
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
+ return error;
}
static int
return error;
}
+ ovs_mutex_lock(&dp_netdev_mutex);
flow = dp_netdev_lookup_flow(dp, &key);
if (flow) {
if (del->stats) {
get_dpif_flow_stats(flow, del->stats);
}
dp_netdev_free_flow(dp, flow);
- return 0;
} else {
- return ENOENT;
+ error = ENOENT;
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
+ return error;
}
struct dp_netdev_flow_state {
struct dp_netdev_flow *flow;
struct hmap_node *node;
+ ovs_mutex_lock(&dp_netdev_mutex);
node = hmap_at_position(&dp->flow_table, &state->bucket, &state->offset);
if (!node) {
+ ovs_mutex_unlock(&dp_netdev_mutex);
return EOF;
}
struct ofpbuf buf;
ofpbuf_use_stack(&buf, &state->keybuf, sizeof state->keybuf);
- odp_flow_key_from_flow(&buf, &flow->key, flow->key.in_port);
+ odp_flow_key_from_flow(&buf, &flow->key, flow->key.in_port.odp_port);
*key = buf.data;
*key_len = buf.size;
*stats = &state->stats;
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
return 0;
}
ofpbuf_reserve(©, DP_NETDEV_HEADROOM);
ofpbuf_put(©, execute->packet->data, execute->packet->size);
- flow_extract(©, 0, 0, NULL, -1, &key);
+ flow_extract(©, 0, 0, NULL, NULL, &key);
error = dpif_netdev_flow_from_nlattrs(execute->key, execute->key_len,
&key);
if (!error) {
+ ovs_mutex_lock(&dp_netdev_mutex);
dp_netdev_execute_actions(dp, ©, &key,
execute->actions, execute->actions_len);
+ ovs_mutex_unlock(&dp_netdev_mutex);
}
ofpbuf_uninit(©);
dpif_netdev_recv(struct dpif *dpif, struct dpif_upcall *upcall,
struct ofpbuf *buf)
{
- struct dp_netdev_queue *q = find_nonempty_queue(dpif);
+ struct dp_netdev_queue *q;
+ int error;
+
+ ovs_mutex_lock(&dp_netdev_mutex);
+ q = find_nonempty_queue(dpif);
if (q) {
struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK];
ofpbuf_uninit(buf);
*buf = u->buf;
- return 0;
+ error = 0;
} else {
- return EAGAIN;
+ error = EAGAIN;
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
+
+ return error;
}
static void
dpif_netdev_recv_wait(struct dpif *dpif)
{
+ struct dp_netdev *dp = get_dp_netdev(dpif);
+ uint64_t seq;
+
+ ovs_mutex_lock(&dp_netdev_mutex);
+ seq = seq_read(dp->queue_seq);
if (find_nonempty_queue(dpif)) {
poll_immediate_wake();
} else {
- /* No messages ready to be received, and dp_wait() will ensure that we
- * wake up to queue new messages, so there is nothing to do. */
+ seq_wait(dp->queue_seq, seq);
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
}
static void
dpif_netdev_recv_purge(struct dpif *dpif)
{
struct dpif_netdev *dpif_netdev = dpif_netdev_cast(dpif);
+ ovs_mutex_lock(&dp_netdev_mutex);
dp_netdev_purge_queues(dpif_netdev->dp);
+ ovs_mutex_unlock(&dp_netdev_mutex);
}
\f
static void
static void
dp_netdev_port_input(struct dp_netdev *dp, struct dp_netdev_port *port,
struct ofpbuf *packet, uint32_t skb_priority,
- uint32_t skb_mark, const struct flow_tnl *tnl)
+ uint32_t pkt_mark, const struct flow_tnl *tnl)
{
struct dp_netdev_flow *flow;
struct flow key;
+ union flow_in_port in_port_;
if (packet->size < ETH_HEADER_LEN) {
return;
}
- flow_extract(packet, skb_priority, skb_mark, tnl, port->port_no, &key);
+ in_port_.odp_port = port->port_no;
+ flow_extract(packet, skb_priority, pkt_mark, tnl, &in_port_, &key);
flow = dp_netdev_lookup_flow(dp, &key);
if (flow) {
dp_netdev_flow_used(flow, packet);
static void
dpif_netdev_run(struct dpif *dpif)
{
- struct dp_netdev *dp = get_dp_netdev(dpif);
struct dp_netdev_port *port;
+ struct dp_netdev *dp;
struct ofpbuf packet;
- ofpbuf_init(&packet, DP_NETDEV_HEADROOM + VLAN_ETH_HEADER_LEN + max_mtu);
+ ovs_mutex_lock(&dp_netdev_mutex);
+ dp = get_dp_netdev(dpif);
+ ofpbuf_init(&packet,
+ DP_NETDEV_HEADROOM + VLAN_ETH_HEADER_LEN + dp->max_mtu);
LIST_FOR_EACH (port, node, &dp->port_list) {
int error;
static 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));
+ netdev_get_name(port->netdev), ovs_strerror(error));
}
}
ofpbuf_uninit(&packet);
+ ovs_mutex_unlock(&dp_netdev_mutex);
}
static void
dpif_netdev_wait(struct dpif *dpif)
{
- struct dp_netdev *dp = get_dp_netdev(dpif);
struct dp_netdev_port *port;
- LIST_FOR_EACH (port, node, &dp->port_list) {
+ /* There is a race here, if thread A calls dpif_netdev_wait(dpif) and
+ * thread B calls dpif_port_add(dpif) or dpif_port_remove(dpif) before
+ * A makes it to poll_block().
+ *
+ * But I think it doesn't matter:
+ *
+ * - In the dpif_port_add() case, A will not wake up when a packet
+ * arrives on the new port, but this would also happen if the
+ * ordering were reversed.
+ *
+ * - In the dpif_port_remove() case, A might wake up spuriously, but
+ * that is harmless. */
+
+ ovs_mutex_lock(&dp_netdev_mutex);
+ LIST_FOR_EACH (port, node, &get_dp_netdev(dpif)->port_list) {
if (port->rx) {
netdev_rx_wait(port->rx);
}
}
+ ovs_mutex_unlock(&dp_netdev_mutex);
}
static void
-dp_netdev_output_port(void *dp_, struct ofpbuf *packet, uint32_t out_port)
+dp_netdev_output_port(void *dp_, struct ofpbuf *packet,
+ const struct flow *flow OVS_UNUSED, odp_port_t out_port)
{
struct dp_netdev *dp = dp_;
- struct dp_netdev_port *p = dp->ports[out_port];
+ struct dp_netdev_port *p = dp->ports[odp_to_u32(out_port)];
if (p) {
netdev_send(p->netdev, packet);
}
ofpbuf_init(buf, buf_size);
/* Put ODP flow. */
- odp_flow_key_from_flow(buf, flow, flow->in_port);
+ odp_flow_key_from_flow(buf, flow, flow->in_port.odp_port);
upcall->key = buf->data;
upcall->key_len = buf->size;
buf->size = packet->size;
upcall->packet = buf;
+ seq_change(dp->queue_seq);
+
return 0;
} else {
dp->n_lost++;
static void
dp_netdev_action_userspace(void *dp, struct ofpbuf *packet,
const struct flow *key,
- const struct nlattr *userdata)
+ const struct nlattr *a)
{
+ const struct nlattr *userdata;
+
+ userdata = nl_attr_find_nested(a, OVS_USERSPACE_ATTR_USERDATA);
dp_netdev_output_userspace(dp, packet, DPIF_UC_ACTION, key, userdata);
}
dp_netdev_output_port, dp_netdev_action_userspace);
}
+#define DPIF_NETDEV_CLASS_FUNCTIONS \
+ dpif_netdev_enumerate, \
+ dpif_netdev_port_open_type, \
+ dpif_netdev_open, \
+ dpif_netdev_close, \
+ dpif_netdev_destroy, \
+ dpif_netdev_run, \
+ dpif_netdev_wait, \
+ dpif_netdev_get_stats, \
+ dpif_netdev_port_add, \
+ dpif_netdev_port_del, \
+ dpif_netdev_port_query_by_number, \
+ dpif_netdev_port_query_by_name, \
+ dpif_netdev_get_max_ports, \
+ NULL, /* port_get_pid */ \
+ dpif_netdev_port_dump_start, \
+ dpif_netdev_port_dump_next, \
+ dpif_netdev_port_dump_done, \
+ dpif_netdev_port_poll, \
+ dpif_netdev_port_poll_wait, \
+ dpif_netdev_flow_get, \
+ dpif_netdev_flow_put, \
+ dpif_netdev_flow_del, \
+ dpif_netdev_flow_flush, \
+ dpif_netdev_flow_dump_start, \
+ dpif_netdev_flow_dump_next, \
+ dpif_netdev_flow_dump_done, \
+ dpif_netdev_execute, \
+ NULL, /* operate */ \
+ dpif_netdev_recv_set, \
+ dpif_netdev_queue_to_priority, \
+ dpif_netdev_recv, \
+ dpif_netdev_recv_wait, \
+ dpif_netdev_recv_purge, \
+
const struct dpif_class dpif_netdev_class = {
"netdev",
- dpif_netdev_enumerate,
- dpif_netdev_port_open_type,
- dpif_netdev_open,
- dpif_netdev_close,
- dpif_netdev_destroy,
- dpif_netdev_run,
- dpif_netdev_wait,
- dpif_netdev_get_stats,
- dpif_netdev_port_add,
- dpif_netdev_port_del,
- dpif_netdev_port_query_by_number,
- dpif_netdev_port_query_by_name,
- dpif_netdev_get_max_ports,
- NULL, /* port_get_pid */
- dpif_netdev_port_dump_start,
- dpif_netdev_port_dump_next,
- dpif_netdev_port_dump_done,
- dpif_netdev_port_poll,
- dpif_netdev_port_poll_wait,
- dpif_netdev_flow_get,
- dpif_netdev_flow_put,
- dpif_netdev_flow_del,
- dpif_netdev_flow_flush,
- dpif_netdev_flow_dump_start,
- dpif_netdev_flow_dump_next,
- dpif_netdev_flow_dump_done,
- dpif_netdev_execute,
- NULL, /* operate */
- dpif_netdev_recv_set,
- dpif_netdev_queue_to_priority,
- dpif_netdev_recv,
- dpif_netdev_recv_wait,
- dpif_netdev_recv_purge,
+ DPIF_NETDEV_CLASS_FUNCTIONS
+};
+
+const struct dpif_class dpif_planetlab_class = {
+ "planetlab",
+ DPIF_NETDEV_CLASS_FUNCTIONS
};
+static void
+dpif_dummy_change_port_number(struct unixctl_conn *conn, int argc OVS_UNUSED,
+ const char *argv[], void *aux OVS_UNUSED)
+{
+ struct dp_netdev_port *port;
+ struct dp_netdev *dp;
+ int port_no;
+
+ dp = shash_find_data(&dp_netdevs, argv[1]);
+ if (!dp || !dpif_netdev_class_is_dummy(dp->class)) {
+ unixctl_command_reply_error(conn, "unknown datapath or not a dummy");
+ return;
+ }
+
+ if (get_port_by_name(dp, argv[2], &port)) {
+ unixctl_command_reply_error(conn, "unknown port");
+ return;
+ }
+
+ port_no = atoi(argv[3]);
+ if (port_no <= 0 || port_no >= MAX_PORTS) {
+ unixctl_command_reply_error(conn, "bad port number");
+ return;
+ }
+ if (dp->ports[port_no]) {
+ unixctl_command_reply_error(conn, "port number already in use");
+ return;
+ }
+ dp->ports[odp_to_u32(port->port_no)] = NULL;
+ dp->ports[port_no] = port;
+ port->port_no = u32_to_odp(port_no);
+ seq_change(dp->port_seq);
+ unixctl_command_reply(conn, NULL);
+}
+
static void
dpif_dummy_register__(const char *type)
{
}
dpif_dummy_register__("dummy");
+
+ unixctl_command_register("dpif-dummy/change-port-number",
+ "DP PORT NEW-NUMBER",
+ 3, 3, dpif_dummy_change_port_number, NULL);
}
+
git://git.onelab.eu / sliver-openvswitch.git / blobdiff