/*
- * Copyright (c) 2009, 2010, 2011 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011, 2012 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
struct in_addr address, netmask;
struct in6_addr in6;
int mtu;
- bool carrier;
+ unsigned int ifi_flags;
long long int carrier_resets;
uint32_t kbits_rate; /* Policing data. */
uint32_t kbits_burst;
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 set_flags(struct netdev *, int flags);
+static int get_flags(const struct netdev_dev *, unsigned int *flags);
+static int set_flags(struct netdev *, unsigned int flags);
static int do_get_ifindex(const char *netdev_name);
static int get_ifindex(const struct netdev *, int *ifindexp);
static int do_set_addr(struct netdev *netdev,
const uint8_t[ETH_ADDR_LEN]);
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 int get_carrier_via_sysfs(const char *name, bool *carrier);
static int af_packet_sock(void);
static void netdev_linux_miimon_run(void);
static void netdev_linux_miimon_wait(void);
}
static void
-netdev_dev_linux_changed(struct netdev_dev_linux *dev)
+netdev_dev_linux_changed(struct netdev_dev_linux *dev, unsigned int ifi_flags)
{
dev->change_seq++;
if (!dev->change_seq) {
dev->change_seq++;
}
+
+ if ((dev->ifi_flags ^ ifi_flags) & IFF_RUNNING) {
+ dev->carrier_resets++;
+ }
+ dev->ifi_flags = ifi_flags;
+
dev->cache_valid = 0;
}
if (is_netdev_linux_class(netdev_class)) {
dev = netdev_dev_linux_cast(base_dev);
-
- if (dev->carrier != change->running) {
- dev->carrier = change->running;
- dev->carrier_resets++;
- }
-
- netdev_dev_linux_changed(dev);
+ netdev_dev_linux_changed(dev, change->ifi_flags);
}
}
} else {
shash_init(&device_shash);
netdev_dev_get_devices(&netdev_linux_class, &device_shash);
SHASH_FOR_EACH (node, &device_shash) {
- bool carrier;
+ unsigned int flags;
dev = node->data;
- get_carrier_via_sysfs(node->name, &carrier);
- if (dev->carrier != carrier) {
- dev->carrier = carrier;
- dev->carrier_resets++;
- }
-
- netdev_dev_linux_changed(dev);
+ get_flags(&dev->netdev_dev, &flags);
+ netdev_dev_linux_changed(dev, flags);
}
shash_destroy(&device_shash);
}
netdev_dev = xzalloc(sizeof *netdev_dev);
netdev_dev->change_seq = 1;
netdev_dev_init(&netdev_dev->netdev_dev, name, class);
- get_carrier_via_sysfs(name, &netdev_dev->carrier);
+ get_flags(&netdev_dev->netdev_dev, &netdev_dev->ifi_flags);
*netdev_devp = &netdev_dev->netdev_dev;
return 0;
struct ifreq ifr;
int error;
+ if (netdev_dev->cache_valid & VALID_MTU &&
+ netdev_dev->mtu == mtu) {
+ return 0;
+ }
ifr.ifr_mtu = mtu;
error = netdev_linux_do_ioctl(netdev_get_name(netdev_), &ifr,
SIOCSIFMTU, "SIOCSIFMTU");
if (netdev_dev->miimon_interval > 0) {
*carrier = netdev_dev->miimon;
} else {
- *carrier = netdev_dev->carrier;
+ *carrier = (netdev_dev->ifi_flags & IFF_RUNNING) != 0;
}
return 0;
netdev_linux_get_miimon(dev->netdev_dev.name, &miimon);
if (miimon != dev->miimon) {
dev->miimon = miimon;
- netdev_dev_linux_changed(dev);
+ netdev_dev_linux_changed(dev, dev->ifi_flags);
}
timer_set_duration(&dev->miimon_timer, dev->miimon_interval);
netdev_linux_update_flags(struct netdev *netdev, enum netdev_flags off,
enum netdev_flags on, enum netdev_flags *old_flagsp)
{
+ struct netdev_dev_linux *netdev_dev;
int old_flags, new_flags;
- int error;
+ int error = 0;
- error = get_flags(netdev, &old_flags);
- if (!error) {
- *old_flagsp = iff_to_nd_flags(old_flags);
- new_flags = (old_flags & ~nd_to_iff_flags(off)) | nd_to_iff_flags(on);
- if (new_flags != old_flags) {
- error = set_flags(netdev, new_flags);
- }
+ netdev_dev = netdev_dev_linux_cast(netdev_get_dev(netdev));
+ old_flags = netdev_dev->ifi_flags;
+ *old_flagsp = iff_to_nd_flags(old_flags);
+ new_flags = (old_flags & ~nd_to_iff_flags(off)) | nd_to_iff_flags(on);
+ if (new_flags != old_flags) {
+ error = set_flags(netdev, new_flags);
+ get_flags(&netdev_dev->netdev_dev, &netdev_dev->ifi_flags);
}
return error;
}
}
static int
-get_carrier_via_sysfs(const char *name, bool *carrier)
-{
- char line[8];
- int retval;
-
- int error = 0;
- char *fn = NULL;
- int fd = -1;
-
- *carrier = false;
-
- fn = xasprintf("/sys/class/net/%s/carrier", name);
- fd = open(fn, O_RDONLY);
- if (fd < 0) {
- error = errno;
- VLOG_WARN_RL(&rl, "%s: open failed: %s", fn, strerror(error));
- goto exit;
- }
-
- retval = read(fd, line, sizeof line);
- if (retval < 0) {
- error = errno;
- if (error == EINVAL) {
- /* This is the normal return value when we try to check carrier if
- * the network device is not up. */
- } else {
- VLOG_WARN_RL(&rl, "%s: read failed: %s", fn, strerror(error));
- }
- goto exit;
- } else if (retval == 0) {
- error = EPROTO;
- VLOG_WARN_RL(&rl, "%s: unexpected end of file", fn);
- goto exit;
- }
-
- if (line[0] != '0' && line[0] != '1') {
- error = EPROTO;
- VLOG_WARN_RL(&rl, "%s: value is %c (expected 0 or 1)", fn, line[0]);
- goto exit;
- }
- *carrier = line[0] != '0';
- error = 0;
-
-exit:
- if (fd >= 0) {
- close(fd);
- }
- free(fn);
- return error;
-}
-
-static int
-get_flags(const struct netdev *netdev, int *flags)
+get_flags(const struct netdev_dev *dev, unsigned int *flags)
{
struct ifreq ifr;
int error;
- error = netdev_linux_do_ioctl(netdev_get_name(netdev), &ifr, SIOCGIFFLAGS,
+ *flags = 0;
+ error = netdev_linux_do_ioctl(dev->name, &ifr, SIOCGIFFLAGS,
"SIOCGIFFLAGS");
- *flags = ifr.ifr_flags;
+ if (!error) {
+ *flags = ifr.ifr_flags;
+ }
return error;
}
static int
-set_flags(struct netdev *netdev, int flags)
+set_flags(struct netdev *netdev, unsigned int flags)
{
struct ifreq ifr;
projects / openvswitch / blobdiff