/*
- * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include "dpif-linux.h"
-#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <net/if.h>
#include <linux/types.h>
#include <linux/pkt_sched.h>
-#include <linux/rtnetlink.h>
-#include <linux/sockios.h>
#include <poll.h>
#include <stdlib.h>
#include <strings.h>
+#include <sys/epoll.h>
#include <sys/stat.h>
#include <unistd.h>
#include "netlink.h"
#include "odp-util.h"
#include "ofpbuf.h"
-#include "openvswitch/datapath-compat.h"
-#include "openvswitch/tunnel.h"
#include "packets.h"
#include "poll-loop.h"
#include "random.h"
#include "shash.h"
#include "sset.h"
+#include "timeval.h"
#include "unaligned.h"
#include "util.h"
#include "vlog.h"
VLOG_DEFINE_THIS_MODULE(dpif_linux);
-
-enum { LRU_MAX_PORTS = 1024 };
-enum { LRU_MASK = LRU_MAX_PORTS - 1};
-BUILD_ASSERT_DECL(IS_POW2(LRU_MAX_PORTS));
-
-enum { N_UPCALL_SOCKS = 16 };
-BUILD_ASSERT_DECL(IS_POW2(N_UPCALL_SOCKS));
-BUILD_ASSERT_DECL(N_UPCALL_SOCKS <= 32); /* We use a 32-bit word as a mask. */
+enum { MAX_PORTS = USHRT_MAX };
/* This ethtool flag was introduced in Linux 2.6.24, so it might be
* missing if we have old headers. */
/* Attributes. */
const char *name; /* OVS_DP_ATTR_NAME. */
- const uint32_t *upcall_pid; /* OVS_DP_UPCALL_PID. */
+ const uint32_t *upcall_pid; /* OVS_DP_ATTR_UPCALL_PID. */
+ uint32_t user_features; /* OVS_DP_ATTR_USER_FEATURES */
struct ovs_dp_stats stats; /* OVS_DP_ATTR_STATS. */
+ struct ovs_dp_megaflow_stats megaflow_stats;
+ /* OVS_DP_ATTR_MEGAFLOW_STATS.*/
};
static void dpif_linux_dp_init(struct dpif_linux_dp *);
* the Netlink version of the command, even if actions_len is zero. */
const struct nlattr *key; /* OVS_FLOW_ATTR_KEY. */
size_t key_len;
+ const struct nlattr *mask; /* OVS_FLOW_ATTR_MASK. */
+ size_t mask_len;
const struct nlattr *actions; /* OVS_FLOW_ATTR_ACTIONS. */
size_t actions_len;
const struct ovs_flow_stats *stats; /* OVS_FLOW_ATTR_STATS. */
static void dpif_linux_flow_get_stats(const struct dpif_linux_flow *,
struct dpif_flow_stats *);
+/* One of the dpif channels between the kernel and userspace. */
+struct dpif_channel {
+ struct nl_sock *sock; /* Netlink socket. */
+ long long int last_poll; /* Last time this channel was polled. */
+};
+
+static void report_loss(struct dpif *, struct dpif_channel *);
+
/* Datapath interface for the openvswitch Linux kernel module. */
struct dpif_linux {
struct dpif dpif;
int dp_ifindex;
/* Upcall messages. */
- struct nl_sock *upcall_socks[N_UPCALL_SOCKS];
- uint32_t ready_mask; /* 1-bit for each sock with unread messages. */
- unsigned int listen_mask; /* Mask of DPIF_UC_* bits. */
+ struct ovs_mutex upcall_lock;
+ int uc_array_size; /* Size of 'channels' and 'epoll_events'. */
+ struct dpif_channel *channels;
+ struct epoll_event *epoll_events;
+ int epoll_fd; /* epoll fd that includes channel socks. */
+ int n_events; /* Num events returned by epoll_wait(). */
+ int event_offset; /* Offset into 'epoll_events'. */
/* Change notification. */
- struct sset changed_ports; /* Ports that have changed. */
- struct nln_notifier *port_notifier;
- bool change_error;
-
- /* Queue of unused ports. */
- unsigned long *lru_bitmap;
- uint16_t lru_ports[LRU_MAX_PORTS];
- size_t lru_head;
- size_t lru_tail;
+ struct nl_sock *port_notifier; /* vport multicast group subscriber. */
+ bool refresh_channels;
};
static struct vlog_rate_limit error_rl = VLOG_RATE_LIMIT_INIT(9999, 5);
-/* Generic Netlink family numbers for OVS. */
+/* Generic Netlink family numbers for OVS.
+ *
+ * Initialized by dpif_linux_init(). */
static int ovs_datapath_family;
static int ovs_vport_family;
static int ovs_flow_family;
static int ovs_packet_family;
-/* Generic Netlink socket. */
-static struct nl_sock *genl_sock;
-static struct nln *nln = NULL;
+/* Generic Netlink multicast groups for OVS.
+ *
+ * Initialized by dpif_linux_init(). */
+static unsigned int ovs_vport_mcgroup;
static int dpif_linux_init(void);
-static void open_dpif(const struct dpif_linux_dp *, struct dpif **);
-static bool dpif_linux_nln_parse(struct ofpbuf *, void *);
-static void dpif_linux_port_changed(const void *vport, void *dpif);
-static uint32_t dpif_linux_port_get_pid__(const struct dpif *,
- uint16_t port_no,
- enum dpif_upcall_type);
+static int open_dpif(const struct dpif_linux_dp *, struct dpif **);
+static uint32_t dpif_linux_port_get_pid(const struct dpif *,
+ odp_port_t port_no, uint32_t hash);
+static int dpif_linux_refresh_channels(struct dpif *);
static void dpif_linux_vport_to_ofpbuf(const struct dpif_linux_vport *,
struct ofpbuf *);
return CONTAINER_OF(dpif, struct dpif_linux, dpif);
}
-static void
-dpif_linux_push_port(struct dpif_linux *dp, uint16_t port)
-{
- if (port < LRU_MAX_PORTS && !bitmap_is_set(dp->lru_bitmap, port)) {
- bitmap_set1(dp->lru_bitmap, port);
- dp->lru_ports[dp->lru_head++ & LRU_MASK] = port;
- }
-}
-
-static uint32_t
-dpif_linux_pop_port(struct dpif_linux *dp)
-{
- uint16_t port;
-
- if (dp->lru_head == dp->lru_tail) {
- return UINT32_MAX;
- }
-
- port = dp->lru_ports[dp->lru_tail++ & LRU_MASK];
- bitmap_set0(dp->lru_bitmap, port);
- return port;
-}
-
static int
dpif_linux_enumerate(struct sset *all_dps)
{
struct nl_dump dump;
- struct ofpbuf msg;
+ uint64_t reply_stub[NL_DUMP_BUFSIZE / 8];
+ struct ofpbuf msg, buf;
int error;
error = dpif_linux_init();
return error;
}
+ ofpbuf_use_stub(&buf, reply_stub, sizeof reply_stub);
dpif_linux_dp_dump_start(&dump);
- while (nl_dump_next(&dump, &msg)) {
+ while (nl_dump_next(&dump, &msg, &buf)) {
struct dpif_linux_dp dp;
if (!dpif_linux_dp_from_ofpbuf(&dp, &msg)) {
sset_add(all_dps, dp.name);
}
}
+ ofpbuf_uninit(&buf);
return nl_dump_done(&dump);
}
upcall_pid = 0;
dp_request.upcall_pid = &upcall_pid;
} else {
- dp_request.cmd = OVS_DP_CMD_GET;
+ /* Use OVS_DP_CMD_SET to report user features */
+ dp_request.cmd = OVS_DP_CMD_SET;
}
dp_request.name = name;
+ dp_request.user_features |= OVS_DP_F_UNALIGNED;
error = dpif_linux_dp_transact(&dp_request, &dp, &buf);
if (error) {
return error;
}
- open_dpif(&dp, dpifp);
+ error = open_dpif(&dp, dpifp);
ofpbuf_delete(buf);
- return 0;
+ return error;
}
-static void
+static int
open_dpif(const struct dpif_linux_dp *dp, struct dpif **dpifp)
{
struct dpif_linux *dpif;
- int i;
dpif = xzalloc(sizeof *dpif);
- dpif->port_notifier = nln_notifier_create(nln, dpif_linux_port_changed,
- dpif);
+ dpif->port_notifier = NULL;
+ ovs_mutex_init(&dpif->upcall_lock);
+ dpif->epoll_fd = -1;
dpif_init(&dpif->dpif, &dpif_linux_class, dp->name,
dp->dp_ifindex, dp->dp_ifindex);
dpif->dp_ifindex = dp->dp_ifindex;
- sset_init(&dpif->changed_ports);
*dpifp = &dpif->dpif;
- dpif->lru_bitmap = bitmap_allocate(LRU_MAX_PORTS);
- bitmap_set1(dpif->lru_bitmap, OVSP_LOCAL);
- for (i = 1; i < LRU_MAX_PORTS; i++) {
- dpif_linux_push_port(dpif, i);
+ return 0;
+}
+
+static void
+destroy_channels(struct dpif_linux *dpif)
+{
+ unsigned int i;
+
+ if (dpif->epoll_fd < 0) {
+ return;
+ }
+
+ for (i = 0; i < dpif->uc_array_size; i++ ) {
+ struct dpif_linux_vport vport_request;
+ struct dpif_channel *ch = &dpif->channels[i];
+ uint32_t upcall_pid = 0;
+
+ if (!ch->sock) {
+ continue;
+ }
+
+ epoll_ctl(dpif->epoll_fd, EPOLL_CTL_DEL, nl_sock_fd(ch->sock), NULL);
+
+ /* Turn off upcalls. */
+ dpif_linux_vport_init(&vport_request);
+ vport_request.cmd = OVS_VPORT_CMD_SET;
+ vport_request.dp_ifindex = dpif->dp_ifindex;
+ vport_request.port_no = u32_to_odp(i);
+ vport_request.upcall_pid = &upcall_pid;
+ dpif_linux_vport_transact(&vport_request, NULL, NULL);
+
+ nl_sock_destroy(ch->sock);
}
+
+ free(dpif->channels);
+ dpif->channels = NULL;
+ dpif->uc_array_size = 0;
+
+ free(dpif->epoll_events);
+ dpif->epoll_events = NULL;
+ dpif->n_events = dpif->event_offset = 0;
+
+ /* Don't close dpif->epoll_fd since that would cause other threads that
+ * call dpif_recv_wait() to wait on an arbitrary fd or a closed fd. */
+}
+
+static int
+add_channel(struct dpif_linux *dpif, odp_port_t port_no, struct nl_sock *sock)
+{
+ struct epoll_event event;
+ uint32_t port_idx = odp_to_u32(port_no);
+
+ if (dpif->epoll_fd < 0) {
+ return 0;
+ }
+
+ /* We assume that the datapath densely chooses port numbers, which
+ * can therefore be used as an index into an array of channels. */
+ if (port_idx >= dpif->uc_array_size) {
+ uint32_t new_size = port_idx + 1;
+ uint32_t i;
+
+ if (new_size > MAX_PORTS) {
+ VLOG_WARN_RL(&error_rl, "%s: datapath port %"PRIu32" too big",
+ dpif_name(&dpif->dpif), port_no);
+ return EFBIG;
+ }
+
+ dpif->channels = xrealloc(dpif->channels,
+ new_size * sizeof *dpif->channels);
+ for (i = dpif->uc_array_size; i < new_size; i++) {
+ dpif->channels[i].sock = NULL;
+ }
+
+ dpif->epoll_events = xrealloc(dpif->epoll_events,
+ new_size * sizeof *dpif->epoll_events);
+ dpif->uc_array_size = new_size;
+ }
+
+ memset(&event, 0, sizeof event);
+ event.events = EPOLLIN;
+ event.data.u32 = port_idx;
+ if (epoll_ctl(dpif->epoll_fd, EPOLL_CTL_ADD, nl_sock_fd(sock),
+ &event) < 0) {
+ return errno;
+ }
+
+ nl_sock_destroy(dpif->channels[port_idx].sock);
+ dpif->channels[port_idx].sock = sock;
+ dpif->channels[port_idx].last_poll = LLONG_MIN;
+
+ return 0;
}
static void
-destroy_upcall_socks(struct dpif_linux *dpif)
+del_channel(struct dpif_linux *dpif, odp_port_t port_no)
{
- int i;
+ struct dpif_channel *ch;
+ uint32_t port_idx = odp_to_u32(port_no);
- for (i = 0; i < N_UPCALL_SOCKS; i++) {
- nl_sock_destroy(dpif->upcall_socks[i]);
- dpif->upcall_socks[i] = NULL;
+ if (dpif->epoll_fd < 0 || port_idx >= dpif->uc_array_size) {
+ return;
}
+
+ ch = &dpif->channels[port_idx];
+ if (!ch->sock) {
+ return;
+ }
+
+ epoll_ctl(dpif->epoll_fd, EPOLL_CTL_DEL, nl_sock_fd(ch->sock), NULL);
+ dpif->event_offset = dpif->n_events = 0;
+
+ nl_sock_destroy(ch->sock);
+ ch->sock = NULL;
}
static void
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- nln_notifier_destroy(dpif->port_notifier);
- destroy_upcall_socks(dpif);
- sset_destroy(&dpif->changed_ports);
- free(dpif->lru_bitmap);
+ nl_sock_destroy(dpif->port_notifier);
+ destroy_channels(dpif);
+ if (dpif->epoll_fd >= 0) {
+ close(dpif->epoll_fd);
+ }
+ ovs_mutex_destroy(&dpif->upcall_lock);
free(dpif);
}
}
static void
-dpif_linux_run(struct dpif *dpif OVS_UNUSED)
-{
- if (nln) {
- nln_run(nln);
- }
-}
-
-static void
-dpif_linux_wait(struct dpif *dpif OVS_UNUSED)
+dpif_linux_run(struct dpif *dpif_)
{
- if (nln) {
- nln_wait(nln);
+ struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+ if (dpif->refresh_channels) {
+ dpif->refresh_channels = false;
+ dpif_linux_refresh_channels(dpif_);
}
}
stats->n_missed = dp.stats.n_missed;
stats->n_lost = dp.stats.n_lost;
stats->n_flows = dp.stats.n_flows;
+ stats->n_masks = dp.megaflow_stats.n_masks;
+ stats->n_mask_hit = dp.megaflow_stats.n_mask_hit;
ofpbuf_delete(buf);
}
return error;
}
+static const char *
+get_vport_type(const struct dpif_linux_vport *vport)
+{
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
+
+ switch (vport->type) {
+ case OVS_VPORT_TYPE_NETDEV: {
+ const char *type = netdev_get_type_from_name(vport->name);
+
+ return type ? type : "system";
+ }
+
+ case OVS_VPORT_TYPE_INTERNAL:
+ return "internal";
+
+ case OVS_VPORT_TYPE_GRE:
+ return "gre";
+
+ case OVS_VPORT_TYPE_GRE64:
+ return "gre64";
+
+ case OVS_VPORT_TYPE_VXLAN:
+ return "vxlan";
+
+ case OVS_VPORT_TYPE_LISP:
+ return "lisp";
+
+ case OVS_VPORT_TYPE_UNSPEC:
+ case __OVS_VPORT_TYPE_MAX:
+ break;
+ }
+
+ VLOG_WARN_RL(&rl, "dp%d: port `%s' has unsupported type %u",
+ vport->dp_ifindex, vport->name, (unsigned int) vport->type);
+ return "unknown";
+}
+
+static enum ovs_vport_type
+netdev_to_ovs_vport_type(const struct netdev *netdev)
+{
+ const char *type = netdev_get_type(netdev);
+
+ if (!strcmp(type, "tap") || !strcmp(type, "system")) {
+ return OVS_VPORT_TYPE_NETDEV;
+ } else if (!strcmp(type, "internal")) {
+ return OVS_VPORT_TYPE_INTERNAL;
+ } else if (strstr(type, "gre64")) {
+ return OVS_VPORT_TYPE_GRE64;
+ } else if (strstr(type, "gre")) {
+ return OVS_VPORT_TYPE_GRE;
+ } else if (!strcmp(type, "vxlan")) {
+ return OVS_VPORT_TYPE_VXLAN;
+ } else if (!strcmp(type, "lisp")) {
+ return OVS_VPORT_TYPE_LISP;
+ } else {
+ return OVS_VPORT_TYPE_UNSPEC;
+ }
+}
+
static int
-dpif_linux_port_add(struct dpif *dpif_, struct netdev *netdev,
- uint16_t *port_nop)
+dpif_linux_port_add__(struct dpif *dpif_, struct netdev *netdev,
+ odp_port_t *port_nop)
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- const char *name = netdev_get_name(netdev);
+ const struct netdev_tunnel_config *tnl_cfg;
+ char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
+ const char *name = netdev_vport_get_dpif_port(netdev,
+ namebuf, sizeof namebuf);
const char *type = netdev_get_type(netdev);
struct dpif_linux_vport request, reply;
- const struct ofpbuf *options;
+ struct nl_sock *sock = NULL;
+ uint32_t upcall_pid;
struct ofpbuf *buf;
+ uint64_t options_stub[64 / 8];
+ struct ofpbuf options;
int error;
+ if (dpif->epoll_fd >= 0) {
+ error = nl_sock_create(NETLINK_GENERIC, &sock);
+ if (error) {
+ return error;
+ }
+ }
+
dpif_linux_vport_init(&request);
request.cmd = OVS_VPORT_CMD_NEW;
request.dp_ifindex = dpif->dp_ifindex;
- request.type = netdev_vport_get_vport_type(netdev);
+ request.type = netdev_to_ovs_vport_type(netdev);
if (request.type == OVS_VPORT_TYPE_UNSPEC) {
VLOG_WARN_RL(&error_rl, "%s: cannot create port `%s' because it has "
"unsupported type `%s'",
dpif_name(dpif_), name, type);
+ nl_sock_destroy(sock);
return EINVAL;
}
request.name = name;
- options = netdev_vport_get_options(netdev);
- if (options && options->size) {
- request.options = options->data;
- request.options_len = options->size;
- }
-
if (request.type == OVS_VPORT_TYPE_NETDEV) {
netdev_linux_ethtool_set_flag(netdev, ETH_FLAG_LRO, "LRO", false);
}
- /* Loop until we find a port that isn't used. */
- do {
- uint32_t upcall_pid;
+ tnl_cfg = netdev_get_tunnel_config(netdev);
+ if (tnl_cfg && tnl_cfg->dst_port != 0) {
+ ofpbuf_use_stack(&options, options_stub, sizeof options_stub);
+ nl_msg_put_u16(&options, OVS_TUNNEL_ATTR_DST_PORT,
+ ntohs(tnl_cfg->dst_port));
+ request.options = options.data;
+ request.options_len = options.size;
+ }
- request.port_no = dpif_linux_pop_port(dpif);
- upcall_pid = dpif_linux_port_get_pid__(dpif_, request.port_no,
- DPIF_UC_MISS);
- request.upcall_pid = &upcall_pid;
- error = dpif_linux_vport_transact(&request, &reply, &buf);
+ request.port_no = *port_nop;
+ upcall_pid = sock ? nl_sock_pid(sock) : 0;
+ request.upcall_pid = &upcall_pid;
- if (!error) {
- *port_nop = reply.port_no;
- VLOG_DBG("%s: assigning port %"PRIu32" to netlink pid %"PRIu32,
- dpif_name(dpif_), request.port_no, upcall_pid);
+ error = dpif_linux_vport_transact(&request, &reply, &buf);
+ if (!error) {
+ *port_nop = reply.port_no;
+ VLOG_DBG("%s: assigning port %"PRIu32" to netlink pid %"PRIu32,
+ dpif_name(dpif_), reply.port_no, upcall_pid);
+ } else {
+ if (error == EBUSY && *port_nop != ODPP_NONE) {
+ VLOG_INFO("%s: requested port %"PRIu32" is in use",
+ dpif_name(dpif_), *port_nop);
}
+ nl_sock_destroy(sock);
ofpbuf_delete(buf);
- } while (request.port_no != UINT32_MAX
- && (error == EBUSY || error == EFBIG));
+ return error;
+ }
+ ofpbuf_delete(buf);
+
+ if (sock) {
+ error = add_channel(dpif, *port_nop, sock);
+ if (error) {
+ VLOG_INFO("%s: could not add channel for port %s",
+ dpif_name(dpif_), name);
+
+ /* Delete the port. */
+ dpif_linux_vport_init(&request);
+ request.cmd = OVS_VPORT_CMD_DEL;
+ request.dp_ifindex = dpif->dp_ifindex;
+ request.port_no = *port_nop;
+ dpif_linux_vport_transact(&request, NULL, NULL);
+
+ nl_sock_destroy(sock);
+ return error;
+ }
+ }
+
+ return 0;
+}
+
+static int
+dpif_linux_port_add(struct dpif *dpif_, struct netdev *netdev,
+ odp_port_t *port_nop)
+{
+ struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+ int error;
+
+ ovs_mutex_lock(&dpif->upcall_lock);
+ error = dpif_linux_port_add__(dpif_, netdev, port_nop);
+ ovs_mutex_unlock(&dpif->upcall_lock);
return error;
}
static int
-dpif_linux_port_del(struct dpif *dpif_, uint16_t port_no)
+dpif_linux_port_del__(struct dpif *dpif_, odp_port_t port_no)
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
struct dpif_linux_vport vport;
vport.port_no = port_no;
error = dpif_linux_vport_transact(&vport, NULL, NULL);
- if (!error) {
- dpif_linux_push_port(dpif, port_no);
- }
+ del_channel(dpif, port_no);
+
return error;
}
static int
-dpif_linux_port_query__(const struct dpif *dpif, uint32_t port_no,
+dpif_linux_port_del(struct dpif *dpif_, odp_port_t port_no)
+{
+ struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+ int error;
+
+ ovs_mutex_lock(&dpif->upcall_lock);
+ error = dpif_linux_port_del__(dpif_, port_no);
+ ovs_mutex_unlock(&dpif->upcall_lock);
+
+ return error;
+}
+
+static int
+dpif_linux_port_query__(const struct dpif *dpif, odp_port_t port_no,
const char *port_name, struct dpif_port *dpif_port)
{
struct dpif_linux_vport request;
error = dpif_linux_vport_transact(&request, &reply, &buf);
if (!error) {
- dpif_port->name = xstrdup(reply.name);
- dpif_port->type = xstrdup(netdev_vport_get_netdev_type(&reply));
- dpif_port->port_no = reply.port_no;
+ if (reply.dp_ifindex != request.dp_ifindex) {
+ /* A query by name reported that 'port_name' is in some datapath
+ * other than 'dpif', but the caller wants to know about 'dpif'. */
+ error = ENODEV;
+ } else if (dpif_port) {
+ dpif_port->name = xstrdup(reply.name);
+ dpif_port->type = xstrdup(get_vport_type(&reply));
+ dpif_port->port_no = reply.port_no;
+ }
ofpbuf_delete(buf);
}
return error;
}
static int
-dpif_linux_port_query_by_number(const struct dpif *dpif, uint16_t port_no,
+dpif_linux_port_query_by_number(const struct dpif *dpif, odp_port_t port_no,
struct dpif_port *dpif_port)
{
return dpif_linux_port_query__(dpif, port_no, NULL, dpif_port);
return dpif_linux_port_query__(dpif, 0, devname, dpif_port);
}
-static int
-dpif_linux_get_max_ports(const struct dpif *dpif OVS_UNUSED)
-{
- /* If the datapath increases its range of supported ports, then it should
- * start reporting that. */
- return 1024;
-}
-
static uint32_t
-dpif_linux_port_get_pid__(const struct dpif *dpif_, uint16_t port_no,
- enum dpif_upcall_type upcall_type)
+dpif_linux_port_get_pid(const struct dpif *dpif_, odp_port_t port_no,
+ uint32_t hash OVS_UNUSED)
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+ uint32_t port_idx = odp_to_u32(port_no);
+ uint32_t pid = 0;
- if (!(dpif->listen_mask & (1u << upcall_type))) {
- return 0;
- } else {
- int idx = port_no & (N_UPCALL_SOCKS - 1);
- return nl_sock_pid(dpif->upcall_socks[idx]);
+ ovs_mutex_lock(&dpif->upcall_lock);
+ if (dpif->epoll_fd >= 0) {
+ /* The ODPP_NONE "reserved" port number uses the "ovs-system"'s
+ * channel, since it is not heavily loaded. */
+ uint32_t idx = port_idx >= dpif->uc_array_size ? 0 : port_idx;
+ const struct nl_sock *sock = dpif->channels[idx].sock;
+ pid = sock ? nl_sock_pid(sock) : 0;
}
-}
+ ovs_mutex_unlock(&dpif->upcall_lock);
-static uint32_t
-dpif_linux_port_get_pid(const struct dpif *dpif, uint16_t port_no)
-{
- return dpif_linux_port_get_pid__(dpif, port_no, DPIF_UC_ACTION);
+ return pid;
}
static int
dpif_linux_flow_flush(struct dpif *dpif_)
{
- struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+ const struct dpif_linux *dpif = dpif_linux_cast(dpif_);
struct dpif_linux_flow flow;
dpif_linux_flow_init(&flow);
struct dpif_linux_port_state {
struct nl_dump dump;
- unsigned long *port_bitmap; /* Ports in the datapath. */
- bool complete; /* Dump completed without error. */
+ struct ofpbuf buf;
};
-static int
-dpif_linux_port_dump_start(const struct dpif *dpif_, void **statep)
+static void
+dpif_linux_port_dump_start__(const struct dpif *dpif_, struct nl_dump *dump)
{
- struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- struct dpif_linux_port_state *state;
+ const struct dpif_linux *dpif = dpif_linux_cast(dpif_);
struct dpif_linux_vport request;
struct ofpbuf *buf;
- *statep = state = xmalloc(sizeof *state);
- state->port_bitmap = bitmap_allocate(LRU_MAX_PORTS);
- state->complete = false;
-
dpif_linux_vport_init(&request);
- request.cmd = OVS_DP_CMD_GET;
+ request.cmd = OVS_VPORT_CMD_GET;
request.dp_ifindex = dpif->dp_ifindex;
buf = ofpbuf_new(1024);
dpif_linux_vport_to_ofpbuf(&request, buf);
- nl_dump_start(&state->dump, genl_sock, buf);
+ nl_dump_start(dump, NETLINK_GENERIC, buf);
ofpbuf_delete(buf);
+}
+
+static int
+dpif_linux_port_dump_start(const struct dpif *dpif, void **statep)
+{
+ struct dpif_linux_port_state *state;
+
+ *statep = state = xmalloc(sizeof *state);
+ dpif_linux_port_dump_start__(dpif, &state->dump);
+ ofpbuf_init(&state->buf, NL_DUMP_BUFSIZE);
return 0;
}
static int
-dpif_linux_port_dump_next(const struct dpif *dpif OVS_UNUSED, void *state_,
- struct dpif_port *dpif_port)
+dpif_linux_port_dump_next__(const struct dpif *dpif_, struct nl_dump *dump,
+ struct dpif_linux_vport *vport,
+ struct ofpbuf *buffer)
{
- struct dpif_linux_port_state *state = state_;
- struct dpif_linux_vport vport;
+ struct dpif_linux *dpif = dpif_linux_cast(dpif_);
struct ofpbuf buf;
int error;
- if (!nl_dump_next(&state->dump, &buf)) {
- state->complete = true;
+ if (!nl_dump_next(dump, &buf, buffer)) {
return EOF;
}
- error = dpif_linux_vport_from_ofpbuf(&vport, &buf);
+ error = dpif_linux_vport_from_ofpbuf(vport, &buf);
if (error) {
- return error;
+ VLOG_WARN_RL(&error_rl, "%s: failed to parse vport record (%s)",
+ dpif_name(&dpif->dpif), ovs_strerror(error));
}
+ return error;
+}
- if (vport.port_no < LRU_MAX_PORTS) {
- bitmap_set1(state->port_bitmap, vport.port_no);
- }
+static int
+dpif_linux_port_dump_next(const struct dpif *dpif OVS_UNUSED, void *state_,
+ struct dpif_port *dpif_port)
+{
+ struct dpif_linux_port_state *state = state_;
+ struct dpif_linux_vport vport;
+ int error;
- dpif_port->name = (char *) vport.name;
- dpif_port->type = (char *) netdev_vport_get_netdev_type(&vport);
+ error = dpif_linux_port_dump_next__(dpif, &state->dump, &vport,
+ &state->buf);
+ if (error) {
+ return error;
+ }
+ dpif_port->name = CONST_CAST(char *, vport.name);
+ dpif_port->type = CONST_CAST(char *, get_vport_type(&vport));
dpif_port->port_no = vport.port_no;
return 0;
}
static int
-dpif_linux_port_dump_done(const struct dpif *dpif_, void *state_)
+dpif_linux_port_dump_done(const struct dpif *dpif_ OVS_UNUSED, void *state_)
{
- struct dpif_linux *dpif = dpif_linux_cast(dpif_);
struct dpif_linux_port_state *state = state_;
int error = nl_dump_done(&state->dump);
- if (state->complete) {
- uint16_t i;
-
- for (i = 0; i < LRU_MAX_PORTS; i++) {
- if (!bitmap_is_set(state->port_bitmap, i)) {
- dpif_linux_push_port(dpif, i);
- }
- }
- }
-
- free(state->port_bitmap);
+ ofpbuf_uninit(&state->buf);
free(state);
return error;
}
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- if (dpif->change_error) {
- dpif->change_error = false;
- sset_clear(&dpif->changed_ports);
+ /* Lazily create the Netlink socket to listen for notifications. */
+ if (!dpif->port_notifier) {
+ struct nl_sock *sock;
+ int error;
+
+ error = nl_sock_create(NETLINK_GENERIC, &sock);
+ if (error) {
+ return error;
+ }
+
+ error = nl_sock_join_mcgroup(sock, ovs_vport_mcgroup);
+ if (error) {
+ nl_sock_destroy(sock);
+ return error;
+ }
+ dpif->port_notifier = sock;
+
+ /* We have no idea of the current state so report that everything
+ * changed. */
return ENOBUFS;
- } else if (!sset_is_empty(&dpif->changed_ports)) {
- *devnamep = sset_pop(&dpif->changed_ports);
- return 0;
- } else {
- return EAGAIN;
+ }
+
+ for (;;) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+ uint64_t buf_stub[4096 / 8];
+ struct ofpbuf buf;
+ int error;
+
+ ofpbuf_use_stub(&buf, buf_stub, sizeof buf_stub);
+ error = nl_sock_recv(dpif->port_notifier, &buf, false);
+ if (!error) {
+ struct dpif_linux_vport vport;
+
+ error = dpif_linux_vport_from_ofpbuf(&vport, &buf);
+ if (!error) {
+ if (vport.dp_ifindex == dpif->dp_ifindex
+ && (vport.cmd == OVS_VPORT_CMD_NEW
+ || vport.cmd == OVS_VPORT_CMD_DEL
+ || vport.cmd == OVS_VPORT_CMD_SET)) {
+ VLOG_DBG("port_changed: dpif:%s vport:%s cmd:%"PRIu8,
+ dpif->dpif.full_name, vport.name, vport.cmd);
+ if (vport.cmd == OVS_VPORT_CMD_DEL) {
+ dpif->refresh_channels = true;
+ }
+ *devnamep = xstrdup(vport.name);
+ ofpbuf_uninit(&buf);
+ return 0;
+ }
+ }
+ } else if (error != EAGAIN) {
+ VLOG_WARN_RL(&rl, "error reading or parsing netlink (%s)",
+ ovs_strerror(error));
+ nl_sock_drain(dpif->port_notifier);
+ error = ENOBUFS;
+ }
+
+ ofpbuf_uninit(&buf);
+ if (error) {
+ return error;
+ }
}
}
static void
dpif_linux_port_poll_wait(const struct dpif *dpif_)
{
- struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- if (!sset_is_empty(&dpif->changed_ports) || dpif->change_error) {
+ const struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+
+ if (dpif->port_notifier) {
+ nl_sock_wait(dpif->port_notifier, POLLIN);
+ } else {
poll_immediate_wake();
}
}
const struct nlattr *key, size_t key_len,
struct dpif_linux_flow *reply, struct ofpbuf **bufp)
{
- struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+ const struct dpif_linux *dpif = dpif_linux_cast(dpif_);
struct dpif_linux_flow request;
dpif_linux_flow_init(&request);
dpif_linux_flow_get_stats(&reply, stats);
}
if (actionsp) {
- buf->data = (void *) reply.actions;
+ buf->data = CONST_CAST(struct nlattr *, reply.actions);
buf->size = reply.actions_len;
*actionsp = buf;
} else {
}
static void
-dpif_linux_init_flow_put(struct dpif *dpif_, enum dpif_flow_put_flags flags,
- const struct nlattr *key, size_t key_len,
- const struct nlattr *actions, size_t actions_len,
+dpif_linux_init_flow_put(struct dpif *dpif_, const struct dpif_flow_put *put,
struct dpif_linux_flow *request)
{
- static struct nlattr dummy_action;
+ static const struct nlattr dummy_action;
- struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+ const struct dpif_linux *dpif = dpif_linux_cast(dpif_);
dpif_linux_flow_init(request);
- request->cmd = (flags & DPIF_FP_CREATE
+ request->cmd = (put->flags & DPIF_FP_CREATE
? OVS_FLOW_CMD_NEW : OVS_FLOW_CMD_SET);
request->dp_ifindex = dpif->dp_ifindex;
- request->key = key;
- request->key_len = key_len;
+ request->key = put->key;
+ request->key_len = put->key_len;
+ request->mask = put->mask;
+ request->mask_len = put->mask_len;
/* Ensure that OVS_FLOW_ATTR_ACTIONS will always be included. */
- request->actions = actions ? actions : &dummy_action;
- request->actions_len = actions_len;
- if (flags & DPIF_FP_ZERO_STATS) {
+ request->actions = (put->actions
+ ? put->actions
+ : CONST_CAST(struct nlattr *, &dummy_action));
+ request->actions_len = put->actions_len;
+ if (put->flags & DPIF_FP_ZERO_STATS) {
request->clear = true;
}
- request->nlmsg_flags = flags & DPIF_FP_MODIFY ? 0 : NLM_F_CREATE;
+ request->nlmsg_flags = put->flags & DPIF_FP_MODIFY ? 0 : NLM_F_CREATE;
}
static int
-dpif_linux_flow_put(struct dpif *dpif_, enum dpif_flow_put_flags flags,
- const struct nlattr *key, size_t key_len,
- const struct nlattr *actions, size_t actions_len,
- struct dpif_flow_stats *stats)
+dpif_linux_flow_put(struct dpif *dpif_, const struct dpif_flow_put *put)
{
struct dpif_linux_flow request, reply;
struct ofpbuf *buf;
int error;
- dpif_linux_init_flow_put(dpif_, flags, key, key_len, actions, actions_len,
- &request);
+ dpif_linux_init_flow_put(dpif_, put, &request);
error = dpif_linux_flow_transact(&request,
- stats ? &reply : NULL,
- stats ? &buf : NULL);
- if (!error && stats) {
- dpif_linux_flow_get_stats(&reply, stats);
+ put->stats ? &reply : NULL,
+ put->stats ? &buf : NULL);
+ if (!error && put->stats) {
+ dpif_linux_flow_get_stats(&reply, put->stats);
ofpbuf_delete(buf);
}
return error;
}
+static void
+dpif_linux_init_flow_del(struct dpif *dpif_, const struct dpif_flow_del *del,
+ struct dpif_linux_flow *request)
+{
+ const struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+
+ dpif_linux_flow_init(request);
+ request->cmd = OVS_FLOW_CMD_DEL;
+ request->dp_ifindex = dpif->dp_ifindex;
+ request->key = del->key;
+ request->key_len = del->key_len;
+}
+
static int
-dpif_linux_flow_del(struct dpif *dpif_,
- const struct nlattr *key, size_t key_len,
- struct dpif_flow_stats *stats)
+dpif_linux_flow_del(struct dpif *dpif_, const struct dpif_flow_del *del)
{
- struct dpif_linux *dpif = dpif_linux_cast(dpif_);
struct dpif_linux_flow request, reply;
struct ofpbuf *buf;
int error;
- dpif_linux_flow_init(&request);
- request.cmd = OVS_FLOW_CMD_DEL;
- request.dp_ifindex = dpif->dp_ifindex;
- request.key = key;
- request.key_len = key_len;
+ dpif_linux_init_flow_del(dpif_, del, &request);
error = dpif_linux_flow_transact(&request,
- stats ? &reply : NULL,
- stats ? &buf : NULL);
- if (!error && stats) {
- dpif_linux_flow_get_stats(&reply, stats);
+ del->stats ? &reply : NULL,
+ del->stats ? &buf : NULL);
+ if (!error && del->stats) {
+ dpif_linux_flow_get_stats(&reply, del->stats);
ofpbuf_delete(buf);
}
return error;
}
struct dpif_linux_flow_state {
- struct nl_dump dump;
struct dpif_linux_flow flow;
struct dpif_flow_stats stats;
- struct ofpbuf *buf;
+ struct ofpbuf buffer; /* Always used to store flows. */
+ struct ofpbuf *tmp; /* Used if kernel does not supply actions. */
};
-static int
-dpif_linux_flow_dump_start(const struct dpif *dpif_, void **statep)
+struct dpif_linux_flow_iter {
+ struct nl_dump dump;
+ atomic_int status;
+};
+
+static void
+dpif_linux_flow_dump_state_init(void **statep)
{
- struct dpif_linux *dpif = dpif_linux_cast(dpif_);
struct dpif_linux_flow_state *state;
+
+ *statep = state = xmalloc(sizeof *state);
+ ofpbuf_init(&state->buffer, NL_DUMP_BUFSIZE);
+ state->tmp = NULL;
+}
+
+static void
+dpif_linux_flow_dump_state_uninit(void *state_)
+{
+ struct dpif_linux_flow_state *state = state_;
+
+ ofpbuf_uninit(&state->buffer);
+ ofpbuf_delete(state->tmp);
+ free(state);
+}
+
+static int
+dpif_linux_flow_dump_start(const struct dpif *dpif_, void **iterp)
+{
+ const struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+ struct dpif_linux_flow_iter *iter;
struct dpif_linux_flow request;
struct ofpbuf *buf;
- *statep = state = xmalloc(sizeof *state);
+ *iterp = iter = xmalloc(sizeof *iter);
dpif_linux_flow_init(&request);
- request.cmd = OVS_DP_CMD_GET;
+ request.cmd = OVS_FLOW_CMD_GET;
request.dp_ifindex = dpif->dp_ifindex;
buf = ofpbuf_new(1024);
dpif_linux_flow_to_ofpbuf(&request, buf);
- nl_dump_start(&state->dump, genl_sock, buf);
+ nl_dump_start(&iter->dump, NETLINK_GENERIC, buf);
ofpbuf_delete(buf);
-
- state->buf = NULL;
+ atomic_init(&iter->status, 0);
return 0;
}
static int
-dpif_linux_flow_dump_next(const struct dpif *dpif_ OVS_UNUSED, void *state_,
+dpif_linux_flow_dump_next(const struct dpif *dpif_, void *iter_, void *state_,
const struct nlattr **key, size_t *key_len,
+ const struct nlattr **mask, size_t *mask_len,
const struct nlattr **actions, size_t *actions_len,
const struct dpif_flow_stats **stats)
{
+ struct dpif_linux_flow_iter *iter = iter_;
struct dpif_linux_flow_state *state = state_;
struct ofpbuf buf;
int error;
do {
- ofpbuf_delete(state->buf);
- state->buf = NULL;
+ ofpbuf_delete(state->tmp);
+ state->tmp = NULL;
- if (!nl_dump_next(&state->dump, &buf)) {
+ if (!nl_dump_next(&iter->dump, &buf, &state->buffer)) {
return EOF;
}
error = dpif_linux_flow_from_ofpbuf(&state->flow, &buf);
if (error) {
+ atomic_store(&iter->status, error);
return error;
}
if (actions && !state->flow.actions) {
error = dpif_linux_flow_get__(dpif_, state->flow.key,
state->flow.key_len,
- &state->flow, &state->buf);
+ &state->flow, &state->tmp);
if (error == ENOENT) {
VLOG_DBG("dumped flow disappeared on get");
} else if (error) {
- VLOG_WARN("error fetching dumped flow: %s", strerror(error));
+ VLOG_WARN("error fetching dumped flow: %s",
+ ovs_strerror(error));
}
}
} while (error);
*key = state->flow.key;
*key_len = state->flow.key_len;
}
+ if (mask) {
+ *mask = state->flow.mask;
+ *mask_len = state->flow.mask ? state->flow.mask_len : 0;
+ }
if (stats) {
dpif_linux_flow_get_stats(&state->flow, &state->stats);
*stats = &state->stats;
return error;
}
-static int
-dpif_linux_flow_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_)
+static bool
+dpif_linux_flow_dump_next_may_destroy_keys(void *state_)
{
struct dpif_linux_flow_state *state = state_;
- int error = nl_dump_done(&state->dump);
- ofpbuf_delete(state->buf);
- free(state);
- return error;
+
+ return state->buffer.size ? false : true;
}
-static struct ofpbuf *
-dpif_linux_encode_execute(int dp_ifindex,
- const struct nlattr *key, size_t key_len,
- const struct nlattr *actions, size_t actions_len,
- const struct ofpbuf *packet)
+static int
+dpif_linux_flow_dump_done(const struct dpif *dpif OVS_UNUSED, void *iter_)
{
- struct ovs_header *execute;
- struct ofpbuf *buf;
+ struct dpif_linux_flow_iter *iter = iter_;
+ int dump_status;
+ unsigned int nl_status = nl_dump_done(&iter->dump);
+
+ atomic_read(&iter->status, &dump_status);
+ free(iter);
+ return dump_status ? dump_status : nl_status;
+}
- buf = ofpbuf_new(128 + actions_len + packet->size);
+static void
+dpif_linux_encode_execute(int dp_ifindex, const struct dpif_execute *d_exec,
+ struct ofpbuf *buf)
+{
+ struct ovs_header *k_exec;
+ size_t key_ofs;
+
+ ofpbuf_prealloc_tailroom(buf, (64
+ + d_exec->packet->size
+ + ODP_KEY_METADATA_SIZE
+ + d_exec->actions_len));
nl_msg_put_genlmsghdr(buf, 0, ovs_packet_family, NLM_F_REQUEST,
OVS_PACKET_CMD_EXECUTE, OVS_PACKET_VERSION);
- execute = ofpbuf_put_uninit(buf, sizeof *execute);
- execute->dp_ifindex = dp_ifindex;
+ k_exec = ofpbuf_put_uninit(buf, sizeof *k_exec);
+ k_exec->dp_ifindex = dp_ifindex;
+
+ nl_msg_put_unspec(buf, OVS_PACKET_ATTR_PACKET,
+ d_exec->packet->data, d_exec->packet->size);
- nl_msg_put_unspec(buf, OVS_PACKET_ATTR_PACKET, packet->data, packet->size);
- nl_msg_put_unspec(buf, OVS_PACKET_ATTR_KEY, key, key_len);
- nl_msg_put_unspec(buf, OVS_PACKET_ATTR_ACTIONS, actions, actions_len);
+ key_ofs = nl_msg_start_nested(buf, OVS_PACKET_ATTR_KEY);
+ odp_key_from_pkt_metadata(buf, &d_exec->md);
+ nl_msg_end_nested(buf, key_ofs);
- return buf;
+ nl_msg_put_unspec(buf, OVS_PACKET_ATTR_ACTIONS,
+ d_exec->actions, d_exec->actions_len);
}
static int
-dpif_linux_execute__(int dp_ifindex, const struct nlattr *key, size_t key_len,
- const struct nlattr *actions, size_t actions_len,
- const struct ofpbuf *packet)
+dpif_linux_execute__(int dp_ifindex, const struct dpif_execute *execute)
{
- struct ofpbuf *request;
+ uint64_t request_stub[1024 / 8];
+ struct ofpbuf request;
int error;
- request = dpif_linux_encode_execute(dp_ifindex,
- key, key_len, actions, actions_len,
- packet);
- error = nl_sock_transact(genl_sock, request, NULL);
- ofpbuf_delete(request);
+ ofpbuf_use_stub(&request, request_stub, sizeof request_stub);
+ dpif_linux_encode_execute(dp_ifindex, execute, &request);
+ error = nl_transact(NETLINK_GENERIC, &request, NULL);
+ ofpbuf_uninit(&request);
return error;
}
static int
-dpif_linux_execute(struct dpif *dpif_,
- const struct nlattr *key, size_t key_len,
- const struct nlattr *actions, size_t actions_len,
- const struct ofpbuf *packet)
+dpif_linux_execute(struct dpif *dpif_, struct dpif_execute *execute)
{
- struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+ const struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- return dpif_linux_execute__(dpif->dp_ifindex, key, key_len,
- actions, actions_len, packet);
+ return dpif_linux_execute__(dpif->dp_ifindex, execute);
}
+#define MAX_OPS 50
+
static void
-dpif_linux_operate(struct dpif *dpif_, union dpif_op **ops, size_t n_ops)
+dpif_linux_operate__(struct dpif *dpif_, struct dpif_op **ops, size_t n_ops)
{
- struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- struct nl_transaction **txnsp;
- struct nl_transaction *txns;
- size_t i;
+ const struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- txns = xmalloc(n_ops * sizeof *txns);
- for (i = 0; i < n_ops; i++) {
- struct nl_transaction *txn = &txns[i];
- union dpif_op *op = ops[i];
+ struct op_auxdata {
+ struct nl_transaction txn;
- if (op->type == DPIF_OP_FLOW_PUT) {
- struct dpif_flow_put *put = &op->flow_put;
- struct dpif_linux_flow request;
+ struct ofpbuf request;
+ uint64_t request_stub[1024 / 8];
- dpif_linux_init_flow_put(dpif_, put->flags, put->key, put->key_len,
- put->actions, put->actions_len,
- &request);
+ struct ofpbuf reply;
+ uint64_t reply_stub[1024 / 8];
+ } auxes[MAX_OPS];
+
+ struct nl_transaction *txnsp[MAX_OPS];
+ size_t i;
+
+ ovs_assert(n_ops <= MAX_OPS);
+ for (i = 0; i < n_ops; i++) {
+ struct op_auxdata *aux = &auxes[i];
+ struct dpif_op *op = ops[i];
+ struct dpif_flow_put *put;
+ struct dpif_flow_del *del;
+ struct dpif_execute *execute;
+ struct dpif_linux_flow flow;
+
+ ofpbuf_use_stub(&aux->request,
+ aux->request_stub, sizeof aux->request_stub);
+ aux->txn.request = &aux->request;
+
+ ofpbuf_use_stub(&aux->reply, aux->reply_stub, sizeof aux->reply_stub);
+ aux->txn.reply = NULL;
+
+ switch (op->type) {
+ case DPIF_OP_FLOW_PUT:
+ put = &op->u.flow_put;
+ dpif_linux_init_flow_put(dpif_, put, &flow);
if (put->stats) {
- request.nlmsg_flags |= NLM_F_ECHO;
+ flow.nlmsg_flags |= NLM_F_ECHO;
+ aux->txn.reply = &aux->reply;
}
- txn->request = ofpbuf_new(1024);
- dpif_linux_flow_to_ofpbuf(&request, txn->request);
- } else if (op->type == DPIF_OP_EXECUTE) {
- struct dpif_execute *execute = &op->execute;
-
- txn->request = dpif_linux_encode_execute(
- dpif->dp_ifindex, execute->key, execute->key_len,
- execute->actions, execute->actions_len, execute->packet);
- } else {
- NOT_REACHED();
+ dpif_linux_flow_to_ofpbuf(&flow, &aux->request);
+ break;
+
+ case DPIF_OP_FLOW_DEL:
+ del = &op->u.flow_del;
+ dpif_linux_init_flow_del(dpif_, del, &flow);
+ if (del->stats) {
+ flow.nlmsg_flags |= NLM_F_ECHO;
+ aux->txn.reply = &aux->reply;
+ }
+ dpif_linux_flow_to_ofpbuf(&flow, &aux->request);
+ break;
+
+ case DPIF_OP_EXECUTE:
+ execute = &op->u.execute;
+ dpif_linux_encode_execute(dpif->dp_ifindex, execute,
+ &aux->request);
+ break;
+
+ default:
+ OVS_NOT_REACHED();
}
}
- txnsp = xmalloc(n_ops * sizeof *txnsp);
for (i = 0; i < n_ops; i++) {
- txnsp[i] = &txns[i];
+ txnsp[i] = &auxes[i].txn;
}
-
- nl_sock_transact_multiple(genl_sock, txnsp, n_ops);
-
- free(txnsp);
+ nl_transact_multiple(NETLINK_GENERIC, txnsp, n_ops);
for (i = 0; i < n_ops; i++) {
- struct nl_transaction *txn = &txns[i];
- union dpif_op *op = ops[i];
+ struct op_auxdata *aux = &auxes[i];
+ struct nl_transaction *txn = &auxes[i].txn;
+ struct dpif_op *op = ops[i];
+ struct dpif_flow_put *put;
+ struct dpif_flow_del *del;
- if (op->type == DPIF_OP_FLOW_PUT) {
- struct dpif_flow_put *put = &op->flow_put;
- int error = txn->error;
+ op->error = txn->error;
- if (!error && put->stats) {
- struct dpif_linux_flow reply;
+ switch (op->type) {
+ case DPIF_OP_FLOW_PUT:
+ put = &op->u.flow_put;
+ if (put->stats) {
+ if (!op->error) {
+ struct dpif_linux_flow reply;
+
+ op->error = dpif_linux_flow_from_ofpbuf(&reply,
+ txn->reply);
+ if (!op->error) {
+ dpif_linux_flow_get_stats(&reply, put->stats);
+ }
+ }
- error = dpif_linux_flow_from_ofpbuf(&reply, txn->reply);
- if (!error) {
- dpif_linux_flow_get_stats(&reply, put->stats);
+ if (op->error) {
+ memset(put->stats, 0, sizeof *put->stats);
}
}
- put->error = error;
- } else if (op->type == DPIF_OP_EXECUTE) {
- struct dpif_execute *execute = &op->execute;
+ break;
+
+ case DPIF_OP_FLOW_DEL:
+ del = &op->u.flow_del;
+ if (del->stats) {
+ if (!op->error) {
+ struct dpif_linux_flow reply;
+
+ op->error = dpif_linux_flow_from_ofpbuf(&reply,
+ txn->reply);
+ if (!op->error) {
+ dpif_linux_flow_get_stats(&reply, del->stats);
+ }
+ }
- execute->error = txn->error;
- } else {
- NOT_REACHED();
+ if (op->error) {
+ memset(del->stats, 0, sizeof *del->stats);
+ }
+ }
+ break;
+
+ case DPIF_OP_EXECUTE:
+ break;
+
+ default:
+ OVS_NOT_REACHED();
}
- ofpbuf_delete(txn->request);
- ofpbuf_delete(txn->reply);
+ ofpbuf_uninit(&aux->request);
+ ofpbuf_uninit(&aux->reply);
}
- free(txns);
}
-static int
-dpif_linux_recv_get_mask(const struct dpif *dpif_, int *listen_mask)
+static void
+dpif_linux_operate(struct dpif *dpif, struct dpif_op **ops, size_t n_ops)
{
- struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- *listen_mask = dpif->listen_mask;
- return 0;
+ while (n_ops > 0) {
+ size_t chunk = MIN(n_ops, MAX_OPS);
+ dpif_linux_operate__(dpif, ops, chunk);
+ ops += chunk;
+ n_ops -= chunk;
+ }
}
-static void
-set_upcall_pids(struct dpif *dpif_)
+/* Synchronizes 'dpif->channels' with the set of vports currently in 'dpif' in
+ * the kernel, by adding a new channel for any kernel vport that lacks one and
+ * deleting any channels that have no backing kernel vports. */
+static int
+dpif_linux_refresh_channels(struct dpif *dpif_)
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- struct dpif_port_dump port_dump;
- struct dpif_port port;
- int error;
+ unsigned long int *keep_channels;
+ struct dpif_linux_vport vport;
+ size_t keep_channels_nbits;
+ struct nl_dump dump;
+ uint64_t reply_stub[NL_DUMP_BUFSIZE / 8];
+ struct ofpbuf buf;
+ int retval = 0;
+ size_t i;
- DPIF_PORT_FOR_EACH (&port, &port_dump, &dpif->dpif) {
- uint32_t upcall_pid = dpif_linux_port_get_pid__(dpif_, port.port_no,
- DPIF_UC_MISS);
- struct dpif_linux_vport vport_request;
+ /* To start with, we need an epoll fd. */
+ if (dpif->epoll_fd < 0) {
+ dpif->epoll_fd = epoll_create(10);
+ if (dpif->epoll_fd < 0) {
+ return errno;
+ }
+ }
- dpif_linux_vport_init(&vport_request);
- vport_request.cmd = OVS_VPORT_CMD_SET;
- vport_request.dp_ifindex = dpif->dp_ifindex;
- vport_request.port_no = port.port_no;
- vport_request.upcall_pid = &upcall_pid;
- error = dpif_linux_vport_transact(&vport_request, NULL, NULL);
- if (!error) {
- VLOG_DBG("%s: assigning port %"PRIu32" to netlink pid %"PRIu32,
- dpif_name(&dpif->dpif), vport_request.port_no,
- upcall_pid);
- } else {
- VLOG_WARN_RL(&error_rl, "%s: failed to set upcall pid on port: %s",
- dpif_name(&dpif->dpif), strerror(error));
+ keep_channels_nbits = dpif->uc_array_size;
+ keep_channels = bitmap_allocate(keep_channels_nbits);
+
+ dpif->n_events = dpif->event_offset = 0;
+
+ ofpbuf_use_stub(&buf, reply_stub, sizeof reply_stub);
+ dpif_linux_port_dump_start__(dpif_, &dump);
+ while (!dpif_linux_port_dump_next__(dpif_, &dump, &vport, &buf)) {
+ uint32_t port_no = odp_to_u32(vport.port_no);
+ struct nl_sock *sock = (port_no < dpif->uc_array_size
+ ? dpif->channels[port_no].sock
+ : NULL);
+ bool new_sock = !sock;
+ int error;
+
+ if (new_sock) {
+ error = nl_sock_create(NETLINK_GENERIC, &sock);
+ if (error) {
+ retval = error;
+ goto error;
+ }
+ }
+
+ /* Configure the vport to deliver misses to 'sock'. */
+ if (!vport.upcall_pid || *vport.upcall_pid != nl_sock_pid(sock)) {
+ uint32_t upcall_pid = nl_sock_pid(sock);
+ struct dpif_linux_vport vport_request;
+
+ dpif_linux_vport_init(&vport_request);
+ vport_request.cmd = OVS_VPORT_CMD_SET;
+ vport_request.dp_ifindex = dpif->dp_ifindex;
+ vport_request.port_no = vport.port_no;
+ vport_request.upcall_pid = &upcall_pid;
+ error = dpif_linux_vport_transact(&vport_request, NULL, NULL);
+ if (!error) {
+ VLOG_DBG("%s: assigning port %"PRIu32" to netlink pid %"PRIu32,
+ dpif_name(&dpif->dpif), vport_request.port_no,
+ upcall_pid);
+ } else {
+ VLOG_WARN_RL(&error_rl,
+ "%s: failed to set upcall pid on port: %s",
+ dpif_name(&dpif->dpif), ovs_strerror(error));
+
+ if (error != ENODEV && error != ENOENT) {
+ retval = error;
+ } else {
+ /* The vport isn't really there, even though the dump says
+ * it is. Probably we just hit a race after a port
+ * disappeared. */
+ }
+ goto error;
+ }
+ }
+
+ if (new_sock) {
+ error = add_channel(dpif, vport.port_no, sock);
+ if (error) {
+ VLOG_INFO("%s: could not add channel for port %s",
+ dpif_name(dpif_), vport.name);
+ retval = error;
+ goto error;
+ }
+ }
+
+ if (port_no < keep_channels_nbits) {
+ bitmap_set1(keep_channels, port_no);
+ }
+ continue;
+
+ error:
+ nl_sock_destroy(sock);
+ }
+ nl_dump_done(&dump);
+ ofpbuf_uninit(&buf);
+
+ /* Discard any saved channels that we didn't reuse. */
+ for (i = 0; i < keep_channels_nbits; i++) {
+ if (!bitmap_is_set(keep_channels, i)) {
+ nl_sock_destroy(dpif->channels[i].sock);
+ dpif->channels[i].sock = NULL;
}
}
+ free(keep_channels);
+
+ return retval;
}
static int
-dpif_linux_recv_set_mask(struct dpif *dpif_, int listen_mask)
+dpif_linux_recv_set__(struct dpif *dpif_, bool enable)
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- if (listen_mask == dpif->listen_mask) {
+ if ((dpif->epoll_fd >= 0) == enable) {
+ return 0;
+ } else if (!enable) {
+ destroy_channels(dpif);
return 0;
+ } else {
+ return dpif_linux_refresh_channels(dpif_);
}
+}
- if (!listen_mask) {
- destroy_upcall_socks(dpif);
- } else if (!dpif->listen_mask) {
- int i;
- int error;
-
- for (i = 0; i < N_UPCALL_SOCKS; i++) {
- error = nl_sock_create(NETLINK_GENERIC, &dpif->upcall_socks[i]);
- if (error) {
- destroy_upcall_socks(dpif);
- return error;
- }
- }
+static int
+dpif_linux_recv_set(struct dpif *dpif_, bool enable)
+{
+ struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+ int error;
- dpif->ready_mask = 0;
- }
+ ovs_mutex_lock(&dpif->upcall_lock);
+ error = dpif_linux_recv_set__(dpif_, enable);
+ ovs_mutex_unlock(&dpif->upcall_lock);
- dpif->listen_mask = listen_mask;
- set_upcall_pids(dpif_);
+ return error;
+}
+static int
+dpif_linux_handlers_set(struct dpif *dpif_ OVS_UNUSED,
+ uint32_t n_handlers OVS_UNUSED)
+{
return 0;
}
[OVS_PACKET_ATTR_KEY] = { .type = NL_A_NESTED },
/* OVS_PACKET_CMD_ACTION only. */
- [OVS_PACKET_ATTR_USERDATA] = { .type = NL_A_U64, .optional = true },
+ [OVS_PACKET_ATTR_USERDATA] = { .type = NL_A_UNSPEC, .optional = true },
};
struct ovs_header *ovs_header;
return EINVAL;
}
- memset(upcall, 0, sizeof *upcall);
+ /* (Re)set ALL fields of '*upcall' on successful return. */
upcall->type = type;
- upcall->packet = buf;
- upcall->packet->data = (void *) nl_attr_get(a[OVS_PACKET_ATTR_PACKET]);
- upcall->packet->size = nl_attr_get_size(a[OVS_PACKET_ATTR_PACKET]);
- upcall->key = (void *) nl_attr_get(a[OVS_PACKET_ATTR_KEY]);
+ upcall->key = CONST_CAST(struct nlattr *,
+ nl_attr_get(a[OVS_PACKET_ATTR_KEY]));
upcall->key_len = nl_attr_get_size(a[OVS_PACKET_ATTR_KEY]);
- upcall->userdata = (a[OVS_PACKET_ATTR_USERDATA]
- ? nl_attr_get_u64(a[OVS_PACKET_ATTR_USERDATA])
- : 0);
+ upcall->userdata = a[OVS_PACKET_ATTR_USERDATA];
+
+ /* Allow overwriting the netlink attribute header without reallocating. */
+ ofpbuf_use_stub(&upcall->packet,
+ CONST_CAST(struct nlattr *,
+ nl_attr_get(a[OVS_PACKET_ATTR_PACKET])) - 1,
+ nl_attr_get_size(a[OVS_PACKET_ATTR_PACKET]) +
+ sizeof(struct nlattr));
+ upcall->packet.data = (char *)upcall->packet.data + sizeof(struct nlattr);
+ upcall->packet.size = nl_attr_get_size(a[OVS_PACKET_ATTR_PACKET]);
+
*dp_ifindex = ovs_header->dp_ifindex;
return 0;
}
static int
-dpif_linux_recv(struct dpif *dpif_, struct dpif_upcall *upcall)
+dpif_linux_recv__(struct dpif *dpif_, struct dpif_upcall *upcall,
+ struct ofpbuf *buf)
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
int read_tries = 0;
- if (!dpif->listen_mask) {
+ if (dpif->epoll_fd < 0) {
return EAGAIN;
}
- if (!dpif->ready_mask) {
- struct pollfd pfds[N_UPCALL_SOCKS];
+ if (dpif->event_offset >= dpif->n_events) {
int retval;
- int i;
- for (i = 0; i < N_UPCALL_SOCKS; i++) {
- pfds[i].fd = nl_sock_fd(dpif->upcall_socks[i]);
- pfds[i].events = POLLIN;
- pfds[i].revents = 0;
- }
+ dpif->event_offset = dpif->n_events = 0;
do {
- retval = poll(pfds, N_UPCALL_SOCKS, 0);
+ retval = epoll_wait(dpif->epoll_fd, dpif->epoll_events,
+ dpif->uc_array_size, 0);
} while (retval < 0 && errno == EINTR);
if (retval < 0) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
- VLOG_WARN_RL(&rl, "poll failed (%s)", strerror(errno));
- } else if (!retval) {
- return EAGAIN;
- }
-
- for (i = 0; i < N_UPCALL_SOCKS; i++) {
- if (pfds[i].revents) {
- dpif->ready_mask |= 1u << i;
- }
+ VLOG_WARN_RL(&rl, "epoll_wait failed (%s)", ovs_strerror(errno));
+ } else if (retval > 0) {
+ dpif->n_events = retval;
}
-
- assert(dpif->ready_mask);
}
- do {
- int indx = ffs(dpif->ready_mask) - 1;
- struct nl_sock *upcall_sock = dpif->upcall_socks[indx];
+ while (dpif->event_offset < dpif->n_events) {
+ int idx = dpif->epoll_events[dpif->event_offset].data.u32;
+ struct dpif_channel *ch = &dpif->channels[idx];
- dpif->ready_mask &= ~(1u << indx);
+ dpif->event_offset++;
for (;;) {
- struct ofpbuf *buf;
int dp_ifindex;
int error;
return EAGAIN;
}
- error = nl_sock_recv(upcall_sock, &buf, false);
- if (error == EAGAIN) {
- break;
- } else if (error) {
+ error = nl_sock_recv(ch->sock, buf, false);
+ if (error == ENOBUFS) {
+ /* ENOBUFS typically means that we've received so many
+ * packets that the buffer overflowed. Try again
+ * immediately because there's almost certainly a packet
+ * waiting for us. */
+ report_loss(dpif_, ch);
+ continue;
+ }
+
+ ch->last_poll = time_msec();
+ if (error) {
+ if (error == EAGAIN) {
+ break;
+ }
return error;
}
error = parse_odp_packet(buf, upcall, &dp_ifindex);
- if (!error
- && dp_ifindex == dpif->dp_ifindex
- && dpif->listen_mask & (1u << upcall->type)) {
+ if (!error && dp_ifindex == dpif->dp_ifindex) {
return 0;
- }
-
- ofpbuf_delete(buf);
- if (error) {
+ } else if (error) {
return error;
}
}
- } while (dpif->ready_mask);
+ }
return EAGAIN;
}
-static void
-dpif_linux_recv_wait(struct dpif *dpif_)
+static int
+dpif_linux_recv(struct dpif *dpif_, uint32_t handler_id OVS_UNUSED,
+ struct dpif_upcall *upcall, struct ofpbuf *buf)
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- int i;
+ int error;
- if (!dpif->listen_mask) {
- return;
- }
+ ovs_mutex_lock(&dpif->upcall_lock);
+ error = dpif_linux_recv__(dpif_, upcall, buf);
+ ovs_mutex_unlock(&dpif->upcall_lock);
+
+ return error;
+}
- for (i = 0; i < N_UPCALL_SOCKS; i++) {
- nl_sock_wait(dpif->upcall_socks[i], POLLIN);
+static void
+dpif_linux_recv_wait(struct dpif *dpif_, uint32_t handler_id OVS_UNUSED)
+{
+ struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+
+ ovs_mutex_lock(&dpif->upcall_lock);
+ if (dpif->epoll_fd >= 0) {
+ poll_fd_wait(dpif->epoll_fd, POLLIN);
}
+ ovs_mutex_unlock(&dpif->upcall_lock);
}
static void
dpif_linux_recv_purge(struct dpif *dpif_)
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- int i;
- if (!dpif->listen_mask) {
- return;
- }
+ ovs_mutex_lock(&dpif->upcall_lock);
+ if (dpif->epoll_fd >= 0) {
+ struct dpif_channel *ch;
- for (i = 0; i < N_UPCALL_SOCKS; i++) {
- nl_sock_drain(dpif->upcall_socks[i]);
+ for (ch = dpif->channels; ch < &dpif->channels[dpif->uc_array_size];
+ ch++) {
+ if (ch->sock) {
+ nl_sock_drain(ch->sock);
+ }
+ }
}
+ ovs_mutex_unlock(&dpif->upcall_lock);
}
const struct dpif_class dpif_linux_class = {
"system",
dpif_linux_enumerate,
+ NULL,
dpif_linux_open,
dpif_linux_close,
dpif_linux_destroy,
dpif_linux_run,
- dpif_linux_wait,
+ NULL, /* wait */
dpif_linux_get_stats,
dpif_linux_port_add,
dpif_linux_port_del,
dpif_linux_port_query_by_number,
dpif_linux_port_query_by_name,
- dpif_linux_get_max_ports,
dpif_linux_port_get_pid,
dpif_linux_port_dump_start,
dpif_linux_port_dump_next,
dpif_linux_flow_put,
dpif_linux_flow_del,
dpif_linux_flow_flush,
+ dpif_linux_flow_dump_state_init,
dpif_linux_flow_dump_start,
dpif_linux_flow_dump_next,
+ dpif_linux_flow_dump_next_may_destroy_keys,
dpif_linux_flow_dump_done,
+ dpif_linux_flow_dump_state_uninit,
dpif_linux_execute,
dpif_linux_operate,
- dpif_linux_recv_get_mask,
- dpif_linux_recv_set_mask,
+ dpif_linux_recv_set,
+ dpif_linux_handlers_set,
dpif_linux_queue_to_priority,
dpif_linux_recv,
dpif_linux_recv_wait,
static int
dpif_linux_init(void)
{
- static int error = -1;
-
- if (error < 0) {
- unsigned int ovs_vport_mcgroup;
+ static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
+ static int error;
+ if (ovsthread_once_start(&once)) {
error = nl_lookup_genl_family(OVS_DATAPATH_FAMILY,
&ovs_datapath_family);
if (error) {
error = nl_lookup_genl_family(OVS_PACKET_FAMILY,
&ovs_packet_family);
}
- if (!error) {
- error = nl_sock_create(NETLINK_GENERIC, &genl_sock);
- }
if (!error) {
error = nl_lookup_genl_mcgroup(OVS_VPORT_FAMILY, OVS_VPORT_MCGROUP,
- &ovs_vport_mcgroup,
- OVS_VPORT_MCGROUP_FALLBACK_ID);
- }
- if (!error) {
- static struct dpif_linux_vport vport;
- nln = nln_create(NETLINK_GENERIC, ovs_vport_mcgroup,
- dpif_linux_nln_parse, &vport);
+ &ovs_vport_mcgroup);
}
+
+ ovsthread_once_done(&once);
}
return error;
ofpbuf_delete(buf);
} else if (error != ENODEV && error != ENOENT) {
VLOG_WARN_RL(&error_rl, "%s: vport query failed (%s)",
- name, strerror(error));
+ name, ovs_strerror(error));
}
return reply.type == OVS_VPORT_TYPE_INTERNAL;
}
-
-int
-dpif_linux_vport_send(int dp_ifindex, uint32_t port_no,
- const void *data, size_t size)
-{
- struct ofpbuf actions, key, packet;
- struct odputil_keybuf keybuf;
- struct flow flow;
- uint64_t action;
-
- ofpbuf_use_const(&packet, data, size);
- flow_extract(&packet, 0, htonll(0), 0, &flow);
-
- ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
- odp_flow_key_from_flow(&key, &flow);
-
- ofpbuf_use_stack(&actions, &action, sizeof action);
- nl_msg_put_u32(&actions, OVS_ACTION_ATTR_OUTPUT, port_no);
-
- return dpif_linux_execute__(dp_ifindex, key.data, key.size,
- actions.data, actions.size, &packet);
-}
-
-static bool
-dpif_linux_nln_parse(struct ofpbuf *buf, void *vport_)
-{
- struct dpif_linux_vport *vport = vport_;
- return dpif_linux_vport_from_ofpbuf(vport, buf) == 0;
-}
-
-static void
-dpif_linux_port_changed(const void *vport_, void *dpif_)
-{
- const struct dpif_linux_vport *vport = vport_;
- struct dpif_linux *dpif = dpif_;
-
- if (vport) {
- if (vport->dp_ifindex == dpif->dp_ifindex
- && (vport->cmd == OVS_VPORT_CMD_NEW
- || vport->cmd == OVS_VPORT_CMD_DEL
- || vport->cmd == OVS_VPORT_CMD_SET)) {
- VLOG_DBG("port_changed: dpif:%s vport:%s cmd:%"PRIu8,
- dpif->dpif.full_name, vport->name, vport->cmd);
- sset_add(&dpif->changed_ports, vport->name);
- }
- } else {
- dpif->change_error = true;
- }
-}
\f
/* Parses the contents of 'buf', which contains a "struct ovs_header" followed
* by Netlink attributes, into 'vport'. Returns 0 if successful, otherwise a
[OVS_VPORT_ATTR_UPCALL_PID] = { .type = NL_A_U32 },
[OVS_VPORT_ATTR_STATS] = { NL_POLICY_FOR(struct ovs_vport_stats),
.optional = true },
- [OVS_VPORT_ATTR_ADDRESS] = { .type = NL_A_UNSPEC,
- .min_len = ETH_ADDR_LEN,
- .max_len = ETH_ADDR_LEN,
- .optional = true },
[OVS_VPORT_ATTR_OPTIONS] = { .type = NL_A_NESTED, .optional = true },
};
vport->cmd = genl->cmd;
vport->dp_ifindex = ovs_header->dp_ifindex;
- vport->port_no = nl_attr_get_u32(a[OVS_VPORT_ATTR_PORT_NO]);
+ vport->port_no = nl_attr_get_odp_port(a[OVS_VPORT_ATTR_PORT_NO]);
vport->type = nl_attr_get_u32(a[OVS_VPORT_ATTR_TYPE]);
vport->name = nl_attr_get_string(a[OVS_VPORT_ATTR_NAME]);
if (a[OVS_VPORT_ATTR_UPCALL_PID]) {
if (a[OVS_VPORT_ATTR_STATS]) {
vport->stats = nl_attr_get(a[OVS_VPORT_ATTR_STATS]);
}
- if (a[OVS_VPORT_ATTR_ADDRESS]) {
- vport->address = nl_attr_get(a[OVS_VPORT_ATTR_ADDRESS]);
- }
if (a[OVS_VPORT_ATTR_OPTIONS]) {
vport->options = nl_attr_get(a[OVS_VPORT_ATTR_OPTIONS]);
vport->options_len = nl_attr_get_size(a[OVS_VPORT_ATTR_OPTIONS]);
ovs_header = ofpbuf_put_uninit(buf, sizeof *ovs_header);
ovs_header->dp_ifindex = vport->dp_ifindex;
- if (vport->port_no != UINT32_MAX) {
- nl_msg_put_u32(buf, OVS_VPORT_ATTR_PORT_NO, vport->port_no);
+ if (vport->port_no != ODPP_NONE) {
+ nl_msg_put_odp_port(buf, OVS_VPORT_ATTR_PORT_NO, vport->port_no);
}
if (vport->type != OVS_VPORT_TYPE_UNSPEC) {
vport->stats, sizeof *vport->stats);
}
- if (vport->address) {
- nl_msg_put_unspec(buf, OVS_VPORT_ATTR_ADDRESS,
- vport->address, ETH_ADDR_LEN);
- }
-
if (vport->options) {
nl_msg_put_nested(buf, OVS_VPORT_ATTR_OPTIONS,
vport->options, vport->options_len);
dpif_linux_vport_init(struct dpif_linux_vport *vport)
{
memset(vport, 0, sizeof *vport);
- vport->port_no = UINT32_MAX;
+ vport->port_no = ODPP_NONE;
}
/* Executes 'request' in the kernel datapath. If the command fails, returns a
struct ofpbuf *request_buf;
int error;
- assert((reply != NULL) == (bufp != NULL));
+ ovs_assert((reply != NULL) == (bufp != NULL));
error = dpif_linux_init();
if (error) {
request_buf = ofpbuf_new(1024);
dpif_linux_vport_to_ofpbuf(request, request_buf);
- error = nl_sock_transact(genl_sock, request_buf, bufp);
+ error = nl_transact(NETLINK_GENERIC, request_buf, bufp);
ofpbuf_delete(request_buf);
if (reply) {
[OVS_DP_ATTR_NAME] = { .type = NL_A_STRING, .max_len = IFNAMSIZ },
[OVS_DP_ATTR_STATS] = { NL_POLICY_FOR(struct ovs_dp_stats),
.optional = true },
+ [OVS_DP_ATTR_MEGAFLOW_STATS] = {
+ NL_POLICY_FOR(struct ovs_dp_megaflow_stats),
+ .optional = true },
};
struct nlattr *a[ARRAY_SIZE(ovs_datapath_policy)];
sizeof dp->stats);
}
+ if (a[OVS_DP_ATTR_MEGAFLOW_STATS]) {
+ /* Can't use structure assignment because Netlink doesn't ensure
+ * sufficient alignment for 64-bit members. */
+ memcpy(&dp->megaflow_stats, nl_attr_get(a[OVS_DP_ATTR_MEGAFLOW_STATS]),
+ sizeof dp->megaflow_stats);
+ }
+
return 0;
}
nl_msg_put_u32(buf, OVS_DP_ATTR_UPCALL_PID, *dp->upcall_pid);
}
+ if (dp->user_features) {
+ nl_msg_put_u32(buf, OVS_DP_ATTR_USER_FEATURES, dp->user_features);
+ }
+
/* Skip OVS_DP_ATTR_STATS since we never have a reason to serialize it. */
}
dpif_linux_dp_init(struct dpif_linux_dp *dp)
{
memset(dp, 0, sizeof *dp);
+ dp->megaflow_stats.n_masks = UINT32_MAX;
+ dp->megaflow_stats.n_mask_hit = UINT64_MAX;
}
static void
buf = ofpbuf_new(1024);
dpif_linux_dp_to_ofpbuf(&request, buf);
- nl_dump_start(dump, genl_sock, buf);
+ nl_dump_start(dump, NETLINK_GENERIC, buf);
ofpbuf_delete(buf);
}
struct ofpbuf *request_buf;
int error;
- assert((reply != NULL) == (bufp != NULL));
+ ovs_assert((reply != NULL) == (bufp != NULL));
request_buf = ofpbuf_new(1024);
dpif_linux_dp_to_ofpbuf(request, request_buf);
- error = nl_sock_transact(genl_sock, request_buf, bufp);
+ error = nl_transact(NETLINK_GENERIC, request_buf, bufp);
ofpbuf_delete(request_buf);
if (reply) {
+ dpif_linux_dp_init(reply);
if (!error) {
error = dpif_linux_dp_from_ofpbuf(reply, *bufp);
}
if (error) {
- dpif_linux_dp_init(reply);
ofpbuf_delete(*bufp);
*bufp = NULL;
}
{
static const struct nl_policy ovs_flow_policy[] = {
[OVS_FLOW_ATTR_KEY] = { .type = NL_A_NESTED },
+ [OVS_FLOW_ATTR_MASK] = { .type = NL_A_NESTED, .optional = true },
[OVS_FLOW_ATTR_ACTIONS] = { .type = NL_A_NESTED, .optional = true },
[OVS_FLOW_ATTR_STATS] = { NL_POLICY_FOR(struct ovs_flow_stats),
.optional = true },
flow->dp_ifindex = ovs_header->dp_ifindex;
flow->key = nl_attr_get(a[OVS_FLOW_ATTR_KEY]);
flow->key_len = nl_attr_get_size(a[OVS_FLOW_ATTR_KEY]);
+
+ if (a[OVS_FLOW_ATTR_MASK]) {
+ flow->mask = nl_attr_get(a[OVS_FLOW_ATTR_MASK]);
+ flow->mask_len = nl_attr_get_size(a[OVS_FLOW_ATTR_MASK]);
+ }
if (a[OVS_FLOW_ATTR_ACTIONS]) {
flow->actions = nl_attr_get(a[OVS_FLOW_ATTR_ACTIONS]);
flow->actions_len = nl_attr_get_size(a[OVS_FLOW_ATTR_ACTIONS]);
nl_msg_put_unspec(buf, OVS_FLOW_ATTR_KEY, flow->key, flow->key_len);
}
+ if (flow->mask_len) {
+ nl_msg_put_unspec(buf, OVS_FLOW_ATTR_MASK, flow->mask, flow->mask_len);
+ }
+
if (flow->actions || flow->actions_len) {
nl_msg_put_unspec(buf, OVS_FLOW_ATTR_ACTIONS,
flow->actions, flow->actions_len);
}
/* We never need to send these to the kernel. */
- assert(!flow->stats);
- assert(!flow->tcp_flags);
- assert(!flow->used);
+ ovs_assert(!flow->stats);
+ ovs_assert(!flow->tcp_flags);
+ ovs_assert(!flow->used);
if (flow->clear) {
nl_msg_put_flag(buf, OVS_FLOW_ATTR_CLEAR);
struct ofpbuf *request_buf;
int error;
- assert((reply != NULL) == (bufp != NULL));
+ ovs_assert((reply != NULL) == (bufp != NULL));
if (reply) {
request->nlmsg_flags |= NLM_F_ECHO;
request_buf = ofpbuf_new(1024);
dpif_linux_flow_to_ofpbuf(request, request_buf);
- error = nl_sock_transact(genl_sock, request_buf, bufp);
+ error = nl_transact(NETLINK_GENERIC, request_buf, bufp);
ofpbuf_delete(request_buf);
if (reply) {
stats->used = flow->used ? get_32aligned_u64(flow->used) : 0;
stats->tcp_flags = flow->tcp_flags ? *flow->tcp_flags : 0;
}
+\f
+/* Logs information about a packet that was recently lost in 'ch' (in
+ * 'dpif_'). */
+static void
+report_loss(struct dpif *dpif_, struct dpif_channel *ch)
+{
+ struct dpif_linux *dpif = dpif_linux_cast(dpif_);
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 5);
+ struct ds s;
+
+ if (VLOG_DROP_WARN(&rl)) {
+ return;
+ }
+
+ ds_init(&s);
+ if (ch->last_poll != LLONG_MIN) {
+ ds_put_format(&s, " (last polled %lld ms ago)",
+ time_msec() - ch->last_poll);
+ }
+
+ VLOG_WARN("%s: lost packet on channel %"PRIdPTR"%s",
+ dpif_name(dpif_), ch - dpif->channels, ds_cstr(&s));
+ ds_destroy(&s);
+}
git://git.onelab.eu / sliver-openvswitch.git / blobdiff