/*
- * Copyright (c) 2009 Nicira Networks.
+ * Copyright (c) 2009, 2010 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <arpa/inet.h>
#include <inttypes.h>
#include <linux/if_tun.h>
+#include <linux/ip.h>
#include <linux/types.h>
#include <linux/ethtool.h>
#include <linux/rtnetlink.h>
#include <netpacket/packet.h>
#include <net/ethernet.h>
#include <net/if.h>
+#include <linux/if_tunnel.h>
#include <net/if_arp.h>
#include <net/if_packet.h>
#include <net/route.h>
#include "netlink.h"
#include "ofpbuf.h"
#include "openflow/openflow.h"
+#include "openvswitch/gre.h"
#include "packets.h"
#include "poll-loop.h"
#include "rtnetlink.h"
#include "shash.h"
#include "svec.h"
+#ifndef GRE_IOCTL_ONLY
+#include <linux/if_link.h>
+#endif
+
#define THIS_MODULE VLM_netdev_linux
#include "vlog.h"
\f
#define ADVERTISED_Asym_Pause (1 << 14)
#endif
-struct netdev_linux {
- struct netdev netdev;
-
- /* File descriptors. For ordinary network devices, the two fds below are
- * the same; for tap devices, they differ. */
- int netdev_fd; /* Network device. */
- int tap_fd; /* TAP character device, if any, otherwise the
- * network device. */
-
- struct netdev_linux_cache *cache;
-};
+static struct rtnetlink_notifier netdev_linux_cache_notifier;
+static struct shash cache_map = SHASH_INITIALIZER(&cache_map);
enum {
VALID_IFINDEX = 1 << 0,
VALID_IS_INTERNAL = 1 << 6
};
-/* Cached network device information. */
-struct netdev_linux_cache {
+struct tap_state {
+ int fd;
+};
+
+struct netdev_dev_linux {
+ struct netdev_dev netdev_dev;
+
struct shash_node *shash_node;
- unsigned int valid;
- int ref_cnt;
+ unsigned int cache_valid;
int ifindex;
uint8_t etheraddr[ETH_ADDR_LEN];
int mtu;
int carrier;
bool is_internal;
+
+ union {
+ struct tap_state tap;
+ } state;
};
-static struct shash cache_map = SHASH_INITIALIZER(&cache_map);
-static struct rtnetlink_notifier netdev_linux_cache_notifier;
+struct netdev_linux {
+ struct netdev netdev;
+
+ /* File descriptors. For ordinary network devices, the two fds below are
+ * the same; for tap devices, they differ. */
+ int netdev_fd; /* Network device. */
+ int tap_fd; /* TAP character device, if any, otherwise the
+ * network device. */
+};
/* An AF_INET socket (used for ioctl operations). */
static int af_inet_sock = -1;
+struct gre_config {
+ uint32_t local_ip;
+ uint32_t remote_ip;
+ uint32_t in_key;
+ uint32_t out_key;
+ bool have_in_key;
+ bool have_out_key;
+ bool in_csum;
+ bool out_csum;
+};
+
+static struct {
+ union {
+ struct nl_sock *nl_sock;
+ int ioctl_fd;
+ };
+ bool use_ioctl;
+} gre_descriptors;
+
struct netdev_linux_notifier {
struct netdev_notifier notifier;
struct list node;
* additional log messages. */
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
-static int netdev_linux_do_ethtool(struct netdev *, struct ethtool_cmd *,
+static int netdev_linux_do_ethtool(const struct netdev *, struct ethtool_cmd *,
int cmd, const char *cmd_name);
-static int netdev_linux_do_ioctl(const struct netdev *, struct ifreq *,
- int cmd, const char *cmd_name);
+static int netdev_linux_do_ioctl(const char *name, struct ifreq *, int cmd,
+ const char *cmd_name);
static int netdev_linux_get_ipv4(const struct netdev *, struct in_addr *,
int cmd, const char *cmd_name);
static int get_flags(const struct netdev *, int *flagsp);
static int get_stats_via_netlink(int ifindex, struct netdev_stats *stats);
static int get_stats_via_proc(const char *netdev_name, struct netdev_stats *stats);
+static struct netdev_dev_linux *
+netdev_dev_linux_cast(const struct netdev_dev *netdev_dev)
+{
+ const char *type = netdev_dev_get_type(netdev_dev);
+ assert(!strcmp(type, "system") || !strcmp(type, "tap")
+ || !strcmp(type, "gre"));
+ return CONTAINER_OF(netdev_dev, struct netdev_dev_linux, netdev_dev);
+}
+
static struct netdev_linux *
netdev_linux_cast(const struct netdev *netdev)
{
- netdev_assert_class(netdev, &netdev_linux_class);
+ const char *type = netdev_get_type(netdev);
+ assert(!strcmp(type, "system") || !strcmp(type, "tap")
+ || !strcmp(type, "gre"));
return CONTAINER_OF(netdev, struct netdev_linux, netdev);
}
netdev_linux_cache_cb(const struct rtnetlink_change *change,
void *aux UNUSED)
{
- struct netdev_linux_cache *cache;
+ struct netdev_dev_linux *dev;
if (change) {
- cache = shash_find_data(&cache_map, change->ifname);
- if (cache) {
- cache->valid = 0;
+ dev = shash_find_data(&cache_map, change->ifname);
+ if (dev) {
+ dev->cache_valid = 0;
}
} else {
struct shash_node *node;
SHASH_FOR_EACH (node, &cache_map) {
- cache = node->data;
- cache->valid = 0;
+ dev = node->data;
+ dev->cache_valid = 0;
+ }
+ }
+}
+
+/* The arguments are marked as unused to prevent warnings on platforms where
+ * the Netlink interface isn't supported. */
+static int
+setup_gre_netlink(const char *name UNUSED, struct gre_config *config UNUSED,
+ bool create UNUSED)
+{
+#ifdef GRE_IOCTL_ONLY
+ return EOPNOTSUPP;
+#else
+ int error;
+ struct ofpbuf request, *reply;
+ unsigned int nl_flags;
+ struct ifinfomsg ifinfomsg;
+ struct nlattr *linkinfo_hdr;
+ struct nlattr *info_data_hdr;
+ uint16_t iflags = 0;
+ uint16_t oflags = 0;
+ uint8_t pmtudisc = 0;
+
+ if (!gre_descriptors.nl_sock) {
+ error = nl_sock_create(NETLINK_ROUTE, 0, 0, 0,
+ &gre_descriptors.nl_sock);
+ if (error) {
+ VLOG_WARN("couldn't create netlink socket: %s\n", strerror(error));
+ gre_descriptors.nl_sock = NULL;
+ goto error;
+ }
+ }
+
+ ofpbuf_init(&request, 0);
+
+ nl_flags = NLM_F_REQUEST;
+ if (create) {
+ nl_flags |= NLM_F_CREATE|NLM_F_EXCL;
+ }
+
+ /* We over-reserve space, because we do some pointer arithmetic
+ * and don't want the buffer address shifting under us. */
+ nl_msg_put_nlmsghdr(&request, gre_descriptors.nl_sock, 2048, RTM_NEWLINK,
+ nl_flags);
+
+ memset(&ifinfomsg, 0, sizeof ifinfomsg);
+ ifinfomsg.ifi_family = AF_UNSPEC;
+ nl_msg_put(&request, &ifinfomsg, sizeof ifinfomsg);
+
+ linkinfo_hdr = ofpbuf_tail(&request);
+ nl_msg_put_unspec(&request, IFLA_LINKINFO, NULL, 0);
+
+ nl_msg_put_unspec(&request, IFLA_INFO_KIND, "gretap", 6);
+
+ info_data_hdr = ofpbuf_tail(&request);
+ nl_msg_put_unspec(&request, IFLA_INFO_DATA, NULL, 0);
+
+ /* Set flags */
+ if (config->have_in_key) {
+ iflags |= GRE_KEY;
+ }
+ if (config->have_out_key) {
+ oflags |= GRE_KEY;
+ }
+
+ if (config->in_csum) {
+ iflags |= GRE_CSUM;
+ }
+ if (config->out_csum) {
+ oflags |= GRE_CSUM;
+ }
+
+ /* Add options */
+ nl_msg_put_u32(&request, IFLA_GRE_IKEY, config->in_key);
+ nl_msg_put_u32(&request, IFLA_GRE_OKEY, config->out_key);
+ nl_msg_put_u16(&request, IFLA_GRE_IFLAGS, iflags);
+ nl_msg_put_u16(&request, IFLA_GRE_OFLAGS, oflags);
+ nl_msg_put_u32(&request, IFLA_GRE_LOCAL, config->local_ip);
+ nl_msg_put_u32(&request, IFLA_GRE_REMOTE, config->remote_ip);
+ nl_msg_put_u8(&request, IFLA_GRE_PMTUDISC, pmtudisc);
+ nl_msg_put_u8(&request, IFLA_GRE_TTL, 0);
+ nl_msg_put_u8(&request, IFLA_GRE_TOS, 0);
+
+ info_data_hdr->nla_len = (char *)ofpbuf_tail(&request)
+ - (char *)info_data_hdr;
+ linkinfo_hdr->nla_len = (char *)ofpbuf_tail(&request)
+ - (char *)linkinfo_hdr;
+
+ nl_msg_put_string(&request, IFLA_IFNAME, name);
+
+ error = nl_sock_transact(gre_descriptors.nl_sock, &request, &reply);
+ ofpbuf_uninit(&request);
+ if (error) {
+ VLOG_WARN("couldn't transact netlink socket: %s\n", strerror(error));
+ goto error;
+ }
+ ofpbuf_delete(reply);
+
+error:
+ return error;
+#endif
+}
+
+static int
+setup_gre_ioctl(const char *name, struct gre_config *config, bool create)
+{
+ struct ip_tunnel_parm p;
+ struct ifreq ifr;
+
+ memset(&p, 0, sizeof p);
+
+ strncpy(p.name, name, IFNAMSIZ);
+
+ p.iph.version = 4;
+ p.iph.ihl = 5;
+ p.iph.protocol = IPPROTO_GRE;
+ p.iph.saddr = config->local_ip;
+ p.iph.daddr = config->remote_ip;
+
+ if (config->have_in_key) {
+ p.i_flags |= GRE_KEY;
+ p.i_key = config->in_key;
+ }
+ if (config->have_out_key) {
+ p.o_flags |= GRE_KEY;
+ p.o_key = config->out_key;
+ }
+
+ if (config->in_csum) {
+ p.i_flags |= GRE_CSUM;
+ }
+ if (config->out_csum) {
+ p.o_flags |= GRE_CSUM;
+ }
+
+ strncpy(ifr.ifr_name, create ? GRE_IOCTL_DEVICE : name, IFNAMSIZ);
+ ifr.ifr_ifru.ifru_data = (void *)&p;
+
+ if (!gre_descriptors.ioctl_fd) {
+ gre_descriptors.ioctl_fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (gre_descriptors.ioctl_fd < 0) {
+ VLOG_WARN("couldn't create gre ioctl socket: %s\n", strerror(errno));
+ gre_descriptors.ioctl_fd = 0;
+ return errno;
+ }
+ }
+
+ if (ioctl(gre_descriptors.ioctl_fd, create ? SIOCADDGRETAP : SIOCCHGGRETAP,
+ &ifr) < 0) {
+ VLOG_WARN("couldn't do gre ioctl: %s\n", strerror(errno));
+ return errno;
+ }
+
+ return 0;
+}
+
+static int
+setup_gre(const char *name, const struct shash *args, bool create)
+{
+ int error;
+ struct in_addr in_addr;
+ struct shash_node *node;
+ struct gre_config config;
+
+ memset(&config, 0, sizeof config);
+ config.in_csum = true;
+ config.out_csum = true;
+
+ SHASH_FOR_EACH (node, args) {
+ if (!strcmp(node->name, "remote_ip")) {
+ if (lookup_ip(node->data, &in_addr)) {
+ VLOG_WARN("bad 'remote_ip' for gre device %s ", name);
+ } else {
+ config.remote_ip = in_addr.s_addr;
+ }
+ } else if (!strcmp(node->name, "local_ip")) {
+ if (lookup_ip(node->data, &in_addr)) {
+ VLOG_WARN("bad 'local_ip' for gre device %s ", name);
+ } else {
+ config.local_ip = in_addr.s_addr;
+ }
+ } else if (!strcmp(node->name, "key")) {
+ config.have_in_key = true;
+ config.have_out_key = true;
+ config.in_key = htonl(atoi(node->data));
+ config.out_key = htonl(atoi(node->data));
+ } else if (!strcmp(node->name, "in_key")) {
+ config.have_in_key = true;
+ config.in_key = htonl(atoi(node->data));
+ } else if (!strcmp(node->name, "out_key")) {
+ config.have_out_key = true;
+ config.out_key = htonl(atoi(node->data));
+ } else if (!strcmp(node->name, "csum")) {
+ if (!strcmp(node->data, "false")) {
+ config.in_csum = false;
+ config.out_csum = false;
+ }
+ } else {
+ VLOG_WARN("unknown gre argument '%s'", node->name);
+ }
+ }
+
+ if (!config.remote_ip) {
+ VLOG_WARN("gre type requires valid 'remote_ip' argument");
+ error = EINVAL;
+ goto error;
+ }
+
+ if (!gre_descriptors.use_ioctl) {
+ error = setup_gre_netlink(name, &config, create);
+ if (error == EOPNOTSUPP) {
+ gre_descriptors.use_ioctl = true;
+ }
+ }
+ if (gre_descriptors.use_ioctl) {
+ error = setup_gre_ioctl(name, &config, create);
+ }
+
+error:
+ return error;
+}
+
+/* Creates the netdev device of 'type' with 'name'. */
+static int
+netdev_linux_create_system(const char *name, const char *type UNUSED,
+ const struct shash *args, struct netdev_dev **netdev_devp)
+{
+ struct netdev_dev_linux *netdev_dev;
+ int error;
+
+ if (!shash_is_empty(args)) {
+ VLOG_WARN("%s: arguments for system devices should be empty", name);
+ }
+
+ if (shash_is_empty(&cache_map)) {
+ error = rtnetlink_notifier_register(&netdev_linux_cache_notifier,
+ netdev_linux_cache_cb, NULL);
+ if (error) {
+ return error;
+ }
+ }
+
+ netdev_dev = xzalloc(sizeof *netdev_dev);
+ netdev_dev->shash_node = shash_add(&cache_map, name, &netdev_dev);
+
+ netdev_dev_init(&netdev_dev->netdev_dev, name, &netdev_linux_class);
+ *netdev_devp = &netdev_dev->netdev_dev;
+ return 0;
+}
+
+static int
+netdev_linux_create_tap(const char *name, const char *type UNUSED,
+ const struct shash *args, struct netdev_dev **netdev_devp)
+{
+ struct netdev_dev_linux *netdev_dev;
+ struct tap_state *state;
+ static const char tap_dev[] = "/dev/net/tun";
+ struct ifreq ifr;
+ int error;
+
+ if (!shash_is_empty(args)) {
+ VLOG_WARN("%s: arguments for TAP devices should be empty", name);
+ }
+
+ netdev_dev = xzalloc(sizeof *netdev_dev);
+ state = &netdev_dev->state.tap;
+
+ /* Open tap device. */
+ state->fd = open(tap_dev, O_RDWR);
+ if (state->fd < 0) {
+ error = errno;
+ VLOG_WARN("opening \"%s\" failed: %s", tap_dev, strerror(error));
+ goto error;
+ }
+
+ /* Create tap device. */
+ ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
+ strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
+ if (ioctl(state->fd, TUNSETIFF, &ifr) == -1) {
+ VLOG_WARN("%s: creating tap device failed: %s", name,
+ strerror(errno));
+ error = errno;
+ goto error;
+ }
+
+ /* Make non-blocking. */
+ error = set_nonblocking(state->fd);
+ if (error) {
+ goto error;
+ }
+
+ netdev_dev_init(&netdev_dev->netdev_dev, name, &netdev_tap_class);
+ *netdev_devp = &netdev_dev->netdev_dev;
+ return 0;
+
+error:
+ free(netdev_dev);
+ return error;
+}
+
+static int
+if_up(const char *name)
+{
+ struct ifreq ifr;
+
+ strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
+ ifr.ifr_flags = IFF_UP;
+
+ if (ioctl(af_inet_sock, SIOCSIFFLAGS, &ifr) == -1) {
+ VLOG_DBG_RL(&rl, "%s: failed to bring device up: %s",
+ name, strerror(errno));
+ return errno;
+ }
+
+ return 0;
+}
+
+static int
+netdev_linux_create_gre(const char *name, const char *type UNUSED,
+ const struct shash *args, struct netdev_dev **netdev_devp)
+{
+ struct netdev_dev_linux *netdev_dev;
+ int error;
+
+ netdev_dev = xzalloc(sizeof *netdev_dev);
+
+ error = setup_gre(name, args, true);
+ if (error) {
+ goto error;
+ }
+
+ error = if_up(name);
+ if (error) {
+ goto error;
+ }
+
+ netdev_dev_init(&netdev_dev->netdev_dev, name, &netdev_gre_class);
+ *netdev_devp = &netdev_dev->netdev_dev;
+ return 0;
+
+error:
+ free(netdev_dev);
+ return error;
+}
+
+static int
+netdev_linux_reconfigure_gre(struct netdev_dev *netdev_dev_,
+ const struct shash *args)
+{
+ const char *name = netdev_dev_get_name(netdev_dev_);
+
+ return setup_gre(name, args, false);
+}
+
+/* The arguments are marked as unused to prevent warnings on platforms where
+ * the Netlink interface isn't supported. */
+static int
+destroy_gre_netlink(struct netdev_dev_linux *netdev_dev UNUSED)
+{
+#ifdef GRE_IOCTL_ONLY
+ return EOPNOTSUPP;
+#else
+ const char *name = netdev_dev_get_name(&netdev_dev->netdev_dev);
+ int error;
+ struct ofpbuf request, *reply;
+ struct ifinfomsg ifinfomsg;
+ int ifindex;
+
+ ofpbuf_init(&request, 0);
+
+ nl_msg_put_nlmsghdr(&request, gre_descriptors.nl_sock, 0, RTM_DELLINK,
+ NLM_F_REQUEST);
+
+ memset(&ifinfomsg, 0, sizeof ifinfomsg);
+ ifinfomsg.ifi_family = AF_UNSPEC;
+ nl_msg_put(&request, &ifinfomsg, sizeof ifinfomsg);
+
+ ifindex = do_get_ifindex(name);
+ nl_msg_put_u32(&request, IFLA_LINK, ifindex);
+
+ nl_msg_put_string(&request, IFLA_IFNAME, name);
+
+ error = nl_sock_transact(gre_descriptors.nl_sock, &request, &reply);
+ ofpbuf_uninit(&request);
+ if (error) {
+ VLOG_WARN("couldn't transact netlink socket: %s\n", strerror(error));
+ goto error;
+ }
+ ofpbuf_delete(reply);
+
+error:
+ return 0;
+#endif
+}
+
+static int
+destroy_gre_ioctl(struct netdev_dev_linux *netdev_dev)
+{
+ const char *name = netdev_dev_get_name(&netdev_dev->netdev_dev);
+ struct ip_tunnel_parm p;
+ struct ifreq ifr;
+
+ memset(&p, 0, sizeof p);
+ strncpy(p.name, name, IFNAMSIZ);
+
+ strncpy(ifr.ifr_name, name, IFNAMSIZ);
+ ifr.ifr_ifru.ifru_data = (void *)&p;
+
+ if (ioctl(gre_descriptors.ioctl_fd, SIOCDELGRETAP, &ifr) < 0) {
+ VLOG_WARN("couldn't do gre ioctl: %s\n", strerror(errno));
+ return errno;
+ }
+
+ return 0;
+}
+
+static void
+destroy_tap(struct netdev_dev_linux *netdev_dev)
+{
+ struct tap_state *state = &netdev_dev->state.tap;
+
+ if (state->fd >= 0) {
+ close(state->fd);
+ }
+}
+
+/* Destroys the netdev device 'netdev_dev_'. */
+static void
+netdev_linux_destroy(struct netdev_dev *netdev_dev_)
+{
+ struct netdev_dev_linux *netdev_dev = netdev_dev_linux_cast(netdev_dev_);
+ const char *type = netdev_dev_get_type(netdev_dev_);
+
+ if (!strcmp(type, "system")) {
+ shash_delete(&cache_map, netdev_dev->shash_node);
+
+ if (shash_is_empty(&cache_map)) {
+ rtnetlink_notifier_unregister(&netdev_linux_cache_notifier);
+ }
+ } else if (!strcmp(type, "tap")) {
+ destroy_tap(netdev_dev);
+ } else if (!strcmp(type, "gre")) {
+ if (gre_descriptors.use_ioctl) {
+ destroy_gre_ioctl(netdev_dev);
+ } else {
+ destroy_gre_netlink(netdev_dev);
}
}
+
+ free(netdev_dev_);
}
static int
-netdev_linux_open(const char *name, char *suffix, int ethertype,
+netdev_linux_open(struct netdev_dev *netdev_dev, int ethertype,
struct netdev **netdevp)
{
struct netdev_linux *netdev;
int error;
/* Allocate network device. */
- netdev = xcalloc(1, sizeof *netdev);
- netdev_init(&netdev->netdev, suffix, &netdev_linux_class);
+ netdev = xzalloc(sizeof *netdev);
+ netdev_init(&netdev->netdev, netdev_dev);
netdev->netdev_fd = -1;
netdev->tap_fd = -1;
- netdev->cache = shash_find_data(&cache_map, suffix);
- if (!netdev->cache) {
- if (shash_is_empty(&cache_map)) {
- int error = rtnetlink_notifier_register(
- &netdev_linux_cache_notifier, netdev_linux_cache_cb, NULL);
- if (error) {
- netdev_close(&netdev->netdev);
- return error;
- }
- }
- netdev->cache = xmalloc(sizeof *netdev->cache);
- netdev->cache->shash_node = shash_add(&cache_map, suffix,
- netdev->cache);
- netdev->cache->valid = 0;
- netdev->cache->ref_cnt = 0;
- }
- netdev->cache->ref_cnt++;
- if (!strncmp(name, "tap:", 4)) {
+ if (!strcmp(netdev_dev_get_type(netdev_dev), "tap")) {
static const char tap_dev[] = "/dev/net/tun";
struct ifreq ifr;
/* Create tap device. */
ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
- strncpy(ifr.ifr_name, suffix, sizeof ifr.ifr_name);
+ strncpy(ifr.ifr_name, netdev_dev_get_name(netdev_dev),
+ sizeof ifr.ifr_name);
if (ioctl(netdev->tap_fd, TUNSETIFF, &ifr) == -1) {
- VLOG_WARN("%s: creating tap device failed: %s", suffix,
+ VLOG_WARN("%s: creating tap device failed: %s",
+ netdev_dev_get_name(netdev_dev),
strerror(errno));
error = errno;
goto error;
if (bind(netdev->netdev_fd,
(struct sockaddr *) &sll, sizeof sll) < 0) {
error = errno;
- VLOG_ERR("bind to %s failed: %s", suffix, strerror(error));
+ VLOG_ERR("bind to %s failed: %s", netdev_dev_get_name(netdev_dev),
+ strerror(error));
goto error;
}
return 0;
error:
- netdev_close(&netdev->netdev);
+ netdev_uninit(&netdev->netdev, true);
return error;
}
{
struct netdev_linux *netdev = netdev_linux_cast(netdev_);
- if (netdev->cache && !--netdev->cache->ref_cnt) {
- shash_delete(&cache_map, netdev->cache->shash_node);
- free(netdev->cache);
-
- if (shash_is_empty(&cache_map)) {
- rtnetlink_notifier_unregister(&netdev_linux_cache_notifier);
- }
- }
if (netdev->netdev_fd >= 0) {
close(netdev->netdev_fd);
}
return 0;
} else if (netdev->tap_fd != netdev->netdev_fd) {
struct ifreq ifr;
- int error = netdev_linux_do_ioctl(netdev_, &ifr,
+ int error = netdev_linux_do_ioctl(netdev_get_name(netdev_), &ifr,
SIOCGIFTXQLEN, "SIOCGIFTXQLEN");
if (error) {
return error;
netdev_linux_set_etheraddr(struct netdev *netdev_,
const uint8_t mac[ETH_ADDR_LEN])
{
- struct netdev_linux *netdev = netdev_linux_cast(netdev_);
- int error = set_etheraddr(netdev_get_name(netdev_), ARPHRD_ETHER, mac);
- if (!error) {
- memcpy(netdev->cache->etheraddr, mac, ETH_ADDR_LEN);
+ struct netdev_dev_linux *netdev_dev =
+ netdev_dev_linux_cast(netdev_get_dev(netdev_));
+ int error;
+
+ if (!(netdev_dev->cache_valid & VALID_ETHERADDR)
+ || !eth_addr_equals(netdev_dev->etheraddr, mac)) {
+ error = set_etheraddr(netdev_get_name(netdev_), ARPHRD_ETHER, mac);
+ if (!error) {
+ netdev_dev->cache_valid |= VALID_ETHERADDR;
+ memcpy(netdev_dev->etheraddr, mac, ETH_ADDR_LEN);
+ }
+ } else {
+ error = 0;
}
return error;
}
netdev_linux_get_etheraddr(const struct netdev *netdev_,
uint8_t mac[ETH_ADDR_LEN])
{
- struct netdev_linux *netdev = netdev_linux_cast(netdev_);
- if (!(netdev->cache->valid & VALID_ETHERADDR)) {
+ struct netdev_dev_linux *netdev_dev =
+ netdev_dev_linux_cast(netdev_get_dev(netdev_));
+ if (!(netdev_dev->cache_valid & VALID_ETHERADDR)) {
int error = get_etheraddr(netdev_get_name(netdev_),
- netdev->cache->etheraddr);
+ netdev_dev->etheraddr);
if (error) {
return error;
}
- netdev->cache->valid |= VALID_ETHERADDR;
+ netdev_dev->cache_valid |= VALID_ETHERADDR;
}
- memcpy(mac, netdev->cache->etheraddr, ETH_ADDR_LEN);
+ memcpy(mac, netdev_dev->etheraddr, ETH_ADDR_LEN);
return 0;
}
static int
netdev_linux_get_mtu(const struct netdev *netdev_, int *mtup)
{
- struct netdev_linux *netdev = netdev_linux_cast(netdev_);
- if (!(netdev->cache->valid & VALID_MTU)) {
+ struct netdev_dev_linux *netdev_dev =
+ netdev_dev_linux_cast(netdev_get_dev(netdev_));
+ if (!(netdev_dev->cache_valid & VALID_MTU)) {
struct ifreq ifr;
int error;
- error = netdev_linux_do_ioctl(netdev_, &ifr, SIOCGIFMTU, "SIOCGIFMTU");
+ error = netdev_linux_do_ioctl(netdev_get_name(netdev_), &ifr,
+ SIOCGIFMTU, "SIOCGIFMTU");
if (error) {
return error;
}
- netdev->cache->mtu = ifr.ifr_mtu;
- netdev->cache->valid |= VALID_MTU;
+ netdev_dev->mtu = ifr.ifr_mtu;
+ netdev_dev->cache_valid |= VALID_MTU;
}
- *mtup = netdev->cache->mtu;
+ *mtup = netdev_dev->mtu;
return 0;
}
+/* Returns the ifindex of 'netdev', if successful, as a positive number.
+ * On failure, returns a negative errno value. */
+static int
+netdev_linux_get_ifindex(const struct netdev *netdev)
+{
+ int ifindex, error;
+
+ error = get_ifindex(netdev, &ifindex);
+ return error ? -error : ifindex;
+}
+
static int
netdev_linux_get_carrier(const struct netdev *netdev_, bool *carrier)
{
- struct netdev_linux *netdev = netdev_linux_cast(netdev_);
+ struct netdev_dev_linux *netdev_dev =
+ netdev_dev_linux_cast(netdev_get_dev(netdev_));
int error = 0;
char *fn = NULL;
int fd = -1;
- if (!(netdev->cache->valid & VALID_CARRIER)) {
+ if (!(netdev_dev->cache_valid & VALID_CARRIER)) {
char line[8];
int retval;
- fn = xasprintf("/sys/class/net/%s/carrier", netdev_get_name(netdev_));
+ fn = xasprintf("/sys/class/net/%s/carrier",
+ netdev_get_name(netdev_));
fd = open(fn, O_RDONLY);
if (fd < 0) {
error = errno;
fn, line[0]);
goto exit;
}
- netdev->cache->carrier = line[0] != '0';
- netdev->cache->valid |= VALID_CARRIER;
+ netdev_dev->carrier = line[0] != '0';
+ netdev_dev->cache_valid |= VALID_CARRIER;
}
- *carrier = netdev->cache->carrier;
+ *carrier = netdev_dev->carrier;
error = 0;
exit:
* XXX All of the members of struct netdev_stats are 64 bits wide, but on
* 32-bit architectures the Linux network stats are only 32 bits. */
static int
-netdev_linux_get_stats(const struct netdev *netdev_, struct netdev_stats *stats)
+netdev_linux_get_stats(const struct netdev *netdev_,
+ struct netdev_stats *stats)
{
- struct netdev_linux *netdev = netdev_linux_cast(netdev_);
+ struct netdev_dev_linux *netdev_dev =
+ netdev_dev_linux_cast(netdev_get_dev(netdev_));
static int use_netlink_stats = -1;
int error;
struct netdev_stats raw_stats;
COVERAGE_INC(netdev_get_stats);
- if (!(netdev->cache->valid & VALID_IS_INTERNAL)) {
- netdev->cache->is_internal = (netdev->tap_fd != -1);
+ if (!(netdev_dev->cache_valid & VALID_IS_INTERNAL)) {
+ netdev_dev->is_internal = !strcmp(netdev_get_type(netdev_),
+ "tap");
- if (!netdev->cache->is_internal) {
+ if (!netdev_dev->is_internal) {
struct ethtool_drvinfo drvinfo;
memset(&drvinfo, 0, sizeof drvinfo);
- error = netdev_linux_do_ethtool(&netdev->netdev,
+ error = netdev_linux_do_ethtool(netdev_,
(struct ethtool_cmd *)&drvinfo,
ETHTOOL_GDRVINFO,
"ETHTOOL_GDRVINFO");
if (!error) {
- netdev->cache->is_internal = !strcmp(drvinfo.driver,
- "openvswitch");
+ netdev_dev->is_internal = !strcmp(drvinfo.driver,
+ "openvswitch");
}
}
- netdev->cache->valid |= VALID_IS_INTERNAL;
+ netdev_dev->cache_valid |= VALID_IS_INTERNAL;
}
- if (netdev->cache->is_internal) {
+ if (netdev_dev->is_internal) {
collect_stats = &raw_stats;
}
if (use_netlink_stats) {
int ifindex;
- error = get_ifindex(&netdev->netdev, &ifindex);
+ error = get_ifindex(netdev_, &ifindex);
if (!error) {
error = get_stats_via_netlink(ifindex, collect_stats);
}
} else {
- error = get_stats_via_proc(netdev->netdev.name, collect_stats);
+ error = get_stats_via_proc(netdev_get_name(netdev_), collect_stats);
}
/* If this port is an internal port then the transmit and receive stats
* will appear to be swapped relative to the other ports since we are the
* one sending the data, not a remote computer. For consistency, we swap
* them back here. */
- if (netdev->cache->is_internal) {
+ if (netdev_dev->is_internal) {
stats->rx_packets = raw_stats.tx_packets;
stats->tx_packets = raw_stats.rx_packets;
stats->rx_bytes = raw_stats.tx_bytes;
/* Stores the features supported by 'netdev' into each of '*current',
* '*advertised', '*supported', and '*peer' that are non-null. Each value is a
* bitmap of "enum ofp_port_features" bits, in host byte order. Returns 0 if
- * successful, otherwise a positive errno value. On failure, all of the
- * passed-in values are set to 0. */
+ * successful, otherwise a positive errno value. */
static int
netdev_linux_get_features(struct netdev *netdev,
uint32_t *current, uint32_t *advertised,
netdev_linux_get_in4(const struct netdev *netdev_,
struct in_addr *address, struct in_addr *netmask)
{
- struct netdev_linux *netdev = netdev_linux_cast(netdev_);
- if (!(netdev->cache->valid & VALID_IN4)) {
+ struct netdev_dev_linux *netdev_dev =
+ netdev_dev_linux_cast(netdev_get_dev(netdev_));
+
+ if (!(netdev_dev->cache_valid & VALID_IN4)) {
int error;
- error = netdev_linux_get_ipv4(netdev_, &netdev->cache->address,
+ error = netdev_linux_get_ipv4(netdev_, &netdev_dev->address,
SIOCGIFADDR, "SIOCGIFADDR");
if (error) {
return error;
}
- error = netdev_linux_get_ipv4(netdev_, &netdev->cache->netmask,
+ error = netdev_linux_get_ipv4(netdev_, &netdev_dev->netmask,
SIOCGIFNETMASK, "SIOCGIFNETMASK");
if (error) {
return error;
}
- netdev->cache->valid |= VALID_IN4;
+ netdev_dev->cache_valid |= VALID_IN4;
}
- *address = netdev->cache->address;
- *netmask = netdev->cache->netmask;
+ *address = netdev_dev->address;
+ *netmask = netdev_dev->netmask;
return address->s_addr == INADDR_ANY ? EADDRNOTAVAIL : 0;
}
netdev_linux_set_in4(struct netdev *netdev_, struct in_addr address,
struct in_addr netmask)
{
- struct netdev_linux *netdev = netdev_linux_cast(netdev_);
+ struct netdev_dev_linux *netdev_dev =
+ netdev_dev_linux_cast(netdev_get_dev(netdev_));
int error;
error = do_set_addr(netdev_, SIOCSIFADDR, "SIOCSIFADDR", address);
if (!error) {
- netdev->cache->valid |= VALID_IN4;
- netdev->cache->address = address;
- netdev->cache->netmask = netmask;
+ netdev_dev->cache_valid |= VALID_IN4;
+ netdev_dev->address = address;
+ netdev_dev->netmask = netmask;
if (address.s_addr != INADDR_ANY) {
error = do_set_addr(netdev_, SIOCSIFNETMASK,
"SIOCSIFNETMASK", netmask);
static int
netdev_linux_get_in6(const struct netdev *netdev_, struct in6_addr *in6)
{
- struct netdev_linux *netdev = netdev_linux_cast(netdev_);
- if (!(netdev->cache->valid & VALID_IN6)) {
+ struct netdev_dev_linux *netdev_dev =
+ netdev_dev_linux_cast(netdev_get_dev(netdev_));
+ if (!(netdev_dev->cache_valid & VALID_IN6)) {
FILE *file;
char line[128];
- netdev->cache->in6 = in6addr_any;
+ netdev_dev->in6 = in6addr_any;
file = fopen("/proc/net/if_inet6", "r");
if (file != NULL) {
if (parse_if_inet6_line(line, &in6, ifname)
&& !strcmp(name, ifname))
{
- netdev->cache->in6 = in6;
+ netdev_dev->in6 = in6;
break;
}
}
fclose(file);
}
- netdev->cache->valid |= VALID_IN6;
+ netdev_dev->cache_valid |= VALID_IN6;
}
- *in6 = netdev->cache->in6;
+ *in6 = netdev_dev->in6;
return 0;
}
int ioctl_nr, const char *ioctl_name, struct in_addr addr)
{
struct ifreq ifr;
- strncpy(ifr.ifr_name, netdev->name, sizeof ifr.ifr_name);
+ strncpy(ifr.ifr_name, netdev_get_name(netdev), sizeof ifr.ifr_name);
make_in4_sockaddr(&ifr.ifr_addr, addr);
- return netdev_linux_do_ioctl(netdev, &ifr, ioctl_nr, ioctl_name);
+
+ return netdev_linux_do_ioctl(netdev_get_name(netdev), &ifr, ioctl_nr,
+ ioctl_name);
}
/* Adds 'router' as a default IP gateway. */
uint32_t ip, uint8_t mac[ETH_ADDR_LEN])
{
struct arpreq r;
- struct sockaddr_in *pa;
+ struct sockaddr_in sin;
int retval;
memset(&r, 0, sizeof r);
- pa = (struct sockaddr_in *) &r.arp_pa;
- pa->sin_family = AF_INET;
- pa->sin_addr.s_addr = ip;
- pa->sin_port = 0;
+ sin.sin_family = AF_INET;
+ sin.sin_addr.s_addr = ip;
+ sin.sin_port = 0;
+ memcpy(&r.arp_pa, &sin, sizeof sin);
r.arp_ha.sa_family = ARPHRD_ETHER;
r.arp_flags = 0;
- strncpy(r.arp_dev, netdev->name, sizeof r.arp_dev);
+ strncpy(r.arp_dev, netdev_get_name(netdev), sizeof r.arp_dev);
COVERAGE_INC(netdev_arp_lookup);
retval = ioctl(af_inet_sock, SIOCGARP, &r) < 0 ? errno : 0;
if (!retval) {
memcpy(mac, r.arp_ha.sa_data, ETH_ADDR_LEN);
} else if (retval != ENXIO) {
VLOG_WARN_RL(&rl, "%s: could not look up ARP entry for "IP_FMT": %s",
- netdev->name, IP_ARGS(&ip), strerror(retval));
+ netdev_get_name(netdev), IP_ARGS(&ip), strerror(retval));
}
return retval;
}
}
const struct netdev_class netdev_linux_class = {
- "", /* prefix */
- "linux", /* name */
+ "system",
netdev_linux_init,
netdev_linux_run,
netdev_linux_wait,
+ netdev_linux_create_system,
+ netdev_linux_destroy,
+ NULL, /* reconfigure */
+
netdev_linux_open,
netdev_linux_close,
netdev_linux_set_etheraddr,
netdev_linux_get_etheraddr,
netdev_linux_get_mtu,
+ netdev_linux_get_ifindex,
netdev_linux_get_carrier,
netdev_linux_get_stats,
};
const struct netdev_class netdev_tap_class = {
- "tap", /* prefix */
- "tap", /* name */
+ "tap",
netdev_linux_init,
- NULL, /* run */
- NULL, /* wait */
+ netdev_linux_run,
+ netdev_linux_wait,
+
+ netdev_linux_create_tap,
+ netdev_linux_destroy,
+ NULL, /* reconfigure */
netdev_linux_open,
netdev_linux_close,
- netdev_linux_enumerate,
+ NULL, /* enumerate */
netdev_linux_recv,
netdev_linux_recv_wait,
netdev_linux_set_etheraddr,
netdev_linux_get_etheraddr,
netdev_linux_get_mtu,
+ netdev_linux_get_ifindex,
+ netdev_linux_get_carrier,
+ netdev_linux_get_stats,
+
+ netdev_linux_get_features,
+ netdev_linux_set_advertisements,
+ netdev_linux_get_vlan_vid,
+ netdev_linux_set_policing,
+
+ netdev_linux_get_in4,
+ netdev_linux_set_in4,
+ netdev_linux_get_in6,
+ netdev_linux_add_router,
+ netdev_linux_get_next_hop,
+ netdev_linux_arp_lookup,
+
+ netdev_linux_update_flags,
+
+ netdev_linux_poll_add,
+ netdev_linux_poll_remove,
+};
+
+const struct netdev_class netdev_gre_class = {
+ "gre",
+
+ netdev_linux_init,
+ netdev_linux_run,
+ netdev_linux_wait,
+
+ netdev_linux_create_gre,
+ netdev_linux_destroy,
+ netdev_linux_reconfigure_gre,
+
+ netdev_linux_open,
+ netdev_linux_close,
+
+ NULL, /* enumerate */
+
+ netdev_linux_recv,
+ netdev_linux_recv_wait,
+ netdev_linux_drain,
+
+ netdev_linux_send,
+ netdev_linux_send_wait,
+
+ netdev_linux_set_etheraddr,
+ netdev_linux_get_etheraddr,
+ netdev_linux_get_mtu,
+ netdev_linux_get_ifindex,
netdev_linux_get_carrier,
netdev_linux_get_stats,
struct ifreq ifr;
int error;
- error = netdev_linux_do_ioctl(netdev, &ifr, SIOCGIFFLAGS, "SIOCGIFFLAGS");
+ error = netdev_linux_do_ioctl(netdev_get_name(netdev), &ifr, SIOCGIFFLAGS,
+ "SIOCGIFFLAGS");
*flags = ifr.ifr_flags;
return error;
}
struct ifreq ifr;
ifr.ifr_flags = flags;
- return netdev_linux_do_ioctl(netdev, &ifr, SIOCSIFFLAGS, "SIOCSIFFLAGS");
+ return netdev_linux_do_ioctl(netdev_get_name(netdev), &ifr, SIOCSIFFLAGS,
+ "SIOCSIFFLAGS");
}
static int
static int
get_ifindex(const struct netdev *netdev_, int *ifindexp)
{
- struct netdev_linux *netdev = netdev_linux_cast(netdev_);
+ struct netdev_dev_linux *netdev_dev =
+ netdev_dev_linux_cast(netdev_get_dev(netdev_));
*ifindexp = 0;
- if (!(netdev->cache->valid & VALID_IFINDEX)) {
+ if (!(netdev_dev->cache_valid & VALID_IFINDEX)) {
int ifindex = do_get_ifindex(netdev_get_name(netdev_));
if (ifindex < 0) {
return -ifindex;
}
- netdev->cache->valid |= VALID_IFINDEX;
- netdev->cache->ifindex = ifindex;
+ netdev_dev->cache_valid |= VALID_IFINDEX;
+ netdev_dev->ifindex = ifindex;
}
- *ifindexp = netdev->cache->ifindex;
+ *ifindexp = netdev_dev->ifindex;
return 0;
}
}
static int
-netdev_linux_do_ethtool(struct netdev *netdev, struct ethtool_cmd *ecmd,
+netdev_linux_do_ethtool(const struct netdev *netdev, struct ethtool_cmd *ecmd,
int cmd, const char *cmd_name)
{
struct ifreq ifr;
memset(&ifr, 0, sizeof ifr);
- strncpy(ifr.ifr_name, netdev->name, sizeof ifr.ifr_name);
+ strncpy(ifr.ifr_name, netdev_get_name(netdev), sizeof ifr.ifr_name);
ifr.ifr_data = (caddr_t) ecmd;
ecmd->cmd = cmd;
} else {
if (errno != EOPNOTSUPP) {
VLOG_WARN_RL(&rl, "ethtool command %s on network device %s "
- "failed: %s", cmd_name, netdev->name,
+ "failed: %s", cmd_name, netdev_get_name(netdev),
strerror(errno));
} else {
/* The device doesn't support this operation. That's pretty
}
static int
-netdev_linux_do_ioctl(const struct netdev *netdev, struct ifreq *ifr,
- int cmd, const char *cmd_name)
+netdev_linux_do_ioctl(const char *name, struct ifreq *ifr, int cmd,
+ const char *cmd_name)
{
- strncpy(ifr->ifr_name, netdev_get_name(netdev), sizeof ifr->ifr_name);
+ strncpy(ifr->ifr_name, name, sizeof ifr->ifr_name);
if (ioctl(af_inet_sock, cmd, ifr) == -1) {
- VLOG_DBG_RL(&rl, "%s: ioctl(%s) failed: %s",
- netdev_get_name(netdev), cmd_name, strerror(errno));
+ VLOG_DBG_RL(&rl, "%s: ioctl(%s) failed: %s", name, cmd_name,
+ strerror(errno));
return errno;
}
return 0;
int error;
ifr.ifr_addr.sa_family = AF_INET;
- error = netdev_linux_do_ioctl(netdev, &ifr, cmd, cmd_name);
+ error = netdev_linux_do_ioctl(netdev_get_name(netdev), &ifr, cmd, cmd_name);
if (!error) {
const struct sockaddr_in *sin = (struct sockaddr_in *) &ifr.ifr_addr;
*ip = sin->sin_addr;
git://git.onelab.eu / sliver-openvswitch.git / blobdiff