#include "packets.h"
#include "poll-loop.h"
#include "random.h"
+#include "seq.h"
#include "shash.h"
#include "sset.h"
#include "timeval.h"
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 dpif_netdev {
struct dpif dpif;
struct dp_netdev *dp;
- unsigned int dp_serial;
+ uint64_t last_port_seq;
};
/* All netdev-based datapaths. */
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)
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;
}
{
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;
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", ODPP_LOCAL);
if (error) {
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);
}
stats->n_hit = dp->n_hit;
stats->n_missed = dp->n_missed;
stats->n_lost = dp->n_lost;
+ stats->n_masks = UINT64_MAX;
+ stats->n_mask_hit = UINT64_MAX;
ovs_mutex_unlock(&dp_netdev_mutex);
return 0;
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))) {
list_push_back(&dp->port_list, &port->node);
dp->ports[odp_to_u32(port_no)] = port;
- dp->serial++;
+ seq_change(dp->port_seq);
return 0;
}
list_remove(&port->node);
dp->ports[odp_to_u32(port_no)] = NULL;
- dp->serial++;
+ seq_change(dp->port_seq);
netdev_close(port->netdev);
netdev_restore_flags(port->sf);
return error;
}
-static odp_port_t
+static uint32_t
dpif_netdev_get_max_ports(const struct dpif *dpif OVS_UNUSED)
{
- return u32_to_odp(MAX_PORTS);
+ return MAX_PORTS;
}
static void
dpif_netdev_port_poll(const struct dpif *dpif_, char **devnamep OVS_UNUSED)
{
struct dpif_netdev *dpif = dpif_netdev_cast(dpif_);
+ uint64_t new_port_seq;
int error;
ovs_mutex_lock(&dp_netdev_mutex);
- if (dpif->dp_serial != dpif->dp->serial) {
- dpif->dp_serial = dpif->dp->serial;
+ 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 {
error = EAGAIN;
{
struct dpif_netdev *dpif = dpif_netdev_cast(dpif_);
- /* XXX In a multithreaded process, there is a race window between this
- * function and the poll_block() in one thread and a change in
- * dpif->dp->serial in another thread. */
-
ovs_mutex_lock(&dp_netdev_mutex);
- if (dpif->dp_serial != dpif->dp->serial) {
- poll_immediate_wake();
- }
+ seq_wait(dpif->dp->port_seq, dpif->last_port_seq);
ovs_mutex_unlock(&dp_netdev_mutex);
}
static void
dpif_netdev_recv_wait(struct dpif *dpif)
{
- /* XXX In a multithreaded process, there is a race window between this
- * function and the poll_block() in one thread and a packet being queued in
- * another thread. */
+ 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 {
+ seq_wait(dp->queue_seq, seq);
}
ovs_mutex_unlock(&dp_netdev_mutex);
}
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;
return;
}
in_port_.odp_port = port->port_no;
- flow_extract(packet, skb_priority, skb_mark, tnl, &in_port_, &key);
+ 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
-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);
}
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
dp->ports[odp_to_u32(port->port_no)] = NULL;
dp->ports[port_no] = port;
port->port_no = u32_to_odp(port_no);
- dp->serial++;
+ seq_change(dp->port_seq);
unixctl_command_reply(conn, NULL);
}
"DP PORT NEW-NUMBER",
3, 3, dpif_dummy_change_port_number, NULL);
}
+
git://git.onelab.eu / sliver-openvswitch.git / blobdiff