netlink-socket: Add functions for joining and leaving multicast groups.

[sliver-openvswitch.git] / lib / netdev-linux.c

diff --git a/lib/netdev-linux.c b/lib/netdev-linux.c
index 97f9a64..e9beebf 100644 (file)
--- a/lib/netdev-linux.c
+++ b/lib/netdev-linux.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2010 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011 Nicira Networks.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,6 +25,7 @@
 #include <linux/ip.h>
 #include <linux/types.h>
 #include <linux/ethtool.h>
+#include <linux/mii.h>
 #include <linux/pkt_sched.h>
 #include <linux/rtnetlink.h>
 #include <linux/sockios.h>
@@ -445,7 +446,7 @@ netdev_linux_init(void)
 
         /* Create rtnetlink socket. */
         if (!status) {
-            status = nl_sock_create(NETLINK_ROUTE, 0, 0, 0, &rtnl_sock);
+            status = nl_sock_create(NETLINK_ROUTE, &rtnl_sock);
             if (status) {
                 VLOG_ERR_RL(&rl, "failed to create rtnetlink socket: %s",
                             strerror(status));
@@ -1007,6 +1008,66 @@ exit:
     return error;
 }
 
+static int
+netdev_linux_do_miimon(const struct netdev *netdev, int cmd,
+                       const char *cmd_name, struct mii_ioctl_data *data)
+{
+    struct ifreq ifr;
+    int error;
+
+    memset(&ifr, 0, sizeof ifr);
+    memcpy(&ifr.ifr_data, data, sizeof *data);
+    error = netdev_linux_do_ioctl(netdev_get_name(netdev),
+                                  &ifr, cmd, cmd_name);
+    memcpy(data, &ifr.ifr_data, sizeof *data);
+
+    return error;
+}
+
+static int
+netdev_linux_get_miimon(const struct netdev *netdev, bool *miimon)
+{
+    const char *name = netdev_get_name(netdev);
+    struct mii_ioctl_data data;
+    int error;
+
+    *miimon = false;
+
+    memset(&data, 0, sizeof data);
+    error = netdev_linux_do_miimon(netdev, SIOCGMIIPHY, "SIOCGMIIPHY", &data);
+    if (!error) {
+        /* data.phy_id is filled out by previous SIOCGMIIPHY miimon call. */
+        data.reg_num = MII_BMSR;
+        error = netdev_linux_do_miimon(netdev, SIOCGMIIREG, "SIOCGMIIREG",
+                                       &data);
+
+        if (!error) {
+            *miimon = !!(data.val_out & BMSR_LSTATUS);
+        } else {
+            VLOG_WARN_RL(&rl, "%s: failed to query MII", name);
+        }
+    } else {
+        struct ethtool_cmd ecmd;
+
+        VLOG_DBG_RL(&rl, "%s: failed to query MII, falling back to ethtool",
+                    name);
+
+        memset(&ecmd, 0, sizeof ecmd);
+        error = netdev_linux_do_ethtool(name, &ecmd, ETHTOOL_GLINK,
+                                        "ETHTOOL_GLINK");
+        if (!error) {
+            struct ethtool_value eval;
+
+            memcpy(&eval, &ecmd, sizeof eval);
+            *miimon = !!eval.data;
+        } else {
+            VLOG_WARN_RL(&rl, "%s: ethtool link status failed", name);
+        }
+    }
+
+    return error;
+}
+
 /* Check whether we can we use RTM_GETLINK to get network device statistics.
  * In pre-2.6.19 kernels, this was only available if wireless extensions were
  * enabled. */
@@ -1140,7 +1201,7 @@ netdev_linux_get_stats(const struct netdev *netdev_,
  * bitmap of "enum ofp_port_features" bits, in host byte order.  Returns 0 if
  * successful, otherwise a positive errno value. */
 static int
-netdev_linux_get_features(struct netdev *netdev,
+netdev_linux_get_features(const struct netdev *netdev,
                           uint32_t *current, uint32_t *advertised,
                           uint32_t *supported, uint32_t *peer)
 {
@@ -1964,6 +2025,26 @@ netdev_linux_get_next_hop(const struct in_addr *host, struct in_addr *next_hop,
     return ENXIO;
 }
 
+static int
+netdev_linux_get_status(const struct netdev *netdev, struct shash *sh)
+{
+    struct ethtool_drvinfo drvinfo;
+    int error;
+
+    memset(&drvinfo, 0, sizeof drvinfo);
+    error = netdev_linux_do_ethtool(netdev_get_name(netdev),
+                                    (struct ethtool_cmd *)&drvinfo,
+                                    ETHTOOL_GDRVINFO,
+                                    "ETHTOOL_GDRVINFO");
+    if (!error) {
+        shash_add(sh, "driver_name", xstrdup(drvinfo.driver));
+        shash_add(sh, "driver_version", xstrdup(drvinfo.version));
+        shash_add(sh, "firmware_version", xstrdup(drvinfo.fw_version));
+    }
+
+    return error;
+}
+
 /* Looks up the ARP table entry for 'ip' on 'netdev'.  If one exists and can be
  * successfully retrieved, it stores the corresponding MAC address in 'mac' and
  * returns 0.  Otherwise, it returns a positive errno value; in particular,
@@ -2152,6 +2233,7 @@ netdev_linux_poll_remove(struct netdev_notifier *notifier_)
     netdev_linux_get_mtu,                                       \
     netdev_linux_get_ifindex,                                   \
     netdev_linux_get_carrier,                                   \
+    netdev_linux_get_miimon,                                    \
     netdev_linux_get_stats,                                     \
     SET_STATS,                                                  \
                                                                 \
@@ -2176,7 +2258,7 @@ netdev_linux_poll_remove(struct netdev_notifier *notifier_)
     netdev_linux_get_in6,                                       \
     netdev_linux_add_router,                                    \
     netdev_linux_get_next_hop,                                  \
-    NULL,                       /* get_status */                \
+    netdev_linux_get_status,                                    \
     netdev_linux_arp_lookup,                                    \
                                                                 \
     netdev_linux_update_flags,                                  \