/*
- * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
+ * Copyright (c) 2008, 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.
return !!shash_find_data(&netdev_dev_shash, name);
}
-/* Clears 'sset' and enumerates the names of all known network devices. */
-int
-netdev_enumerate(struct sset *sset)
+/* Parses 'netdev_name_', which is of the form [type@]name into its component
+ * pieces. 'name' and 'type' must be freed by the caller. */
+void
+netdev_parse_name(const char *netdev_name_, char **name, char **type)
{
- struct shash_node *node;
- int error = 0;
+ char *netdev_name = xstrdup(netdev_name_);
+ char *separator;
- netdev_initialize();
- sset_clear(sset);
-
- SHASH_FOR_EACH(node, &netdev_classes) {
- const struct netdev_class *netdev_class = node->data;
- if (netdev_class->enumerate) {
- int retval = netdev_class->enumerate(sset);
- if (retval) {
- VLOG_WARN("failed to enumerate %s network devices: %s",
- netdev_class->type, strerror(retval));
- if (!error) {
- error = retval;
- }
- }
- }
+ separator = strchr(netdev_name, '@');
+ if (separator) {
+ *separator = '\0';
+ *type = netdev_name;
+ *name = xstrdup(separator + 1);
+ } else {
+ *name = netdev_name;
+ *type = xstrdup("system");
}
-
- return error;
}
/* Attempts to set up 'netdev' for receiving packets with netdev_recv().
* (and received) packets, in bytes, not including the hardware header; thus,
* this is typically 1500 bytes for Ethernet devices.
*
- * If successful, returns 0 and stores the MTU size in '*mtup'. Stores INT_MAX
- * in '*mtup' if 'netdev' does not have an MTU (as e.g. some tunnels do not).On
- * failure, returns a positive errno value and stores ETH_PAYLOAD_MAX (1500) in
- * '*mtup'. */
+ * If successful, returns 0 and stores the MTU size in '*mtup'. Returns
+ * EOPNOTSUPP if 'netdev' does not have an MTU (as e.g. some tunnels do not).
+ * On other failure, returns a positive errno value. On failure, sets '*mtup'
+ * to 0. */
int
netdev_get_mtu(const struct netdev *netdev, int *mtup)
{
- int error = netdev_get_dev(netdev)->netdev_class->get_mtu(netdev, mtup);
+ const struct netdev_class *class = netdev_get_dev(netdev)->netdev_class;
+ int error;
+
+ error = class->get_mtu ? class->get_mtu(netdev, mtup) : EOPNOTSUPP;
if (error) {
- VLOG_WARN_RL(&rl, "failed to retrieve MTU for network device %s: %s",
+ *mtup = 0;
+ if (error != EOPNOTSUPP) {
+ VLOG_WARN_RL(&rl, "failed to retrieve MTU for network device %s: "
+ "%s", netdev_get_name(netdev), strerror(error));
+ }
+ }
+ return error;
+}
+
+/* Sets the MTU of 'netdev'. The MTU is the maximum size of transmitted
+ * (and received) packets, in bytes.
+ *
+ * If successful, returns 0. Returns EOPNOTSUPP if 'netdev' does not have an
+ * MTU (as e.g. some tunnels do not). On other failure, returns a positive
+ * errno value. */
+int
+netdev_set_mtu(const struct netdev *netdev, int mtu)
+{
+ const struct netdev_class *class = netdev_get_dev(netdev)->netdev_class;
+ int error;
+
+ error = class->set_mtu ? class->set_mtu(netdev, mtu) : EOPNOTSUPP;
+ if (error && error != EOPNOTSUPP) {
+ VLOG_WARN_RL(&rl, "failed to set MTU for network device %s: %s",
netdev_get_name(netdev), strerror(error));
- *mtup = ETH_PAYLOAD_MAX;
}
+
return error;
}
*
* - EOPNOTSUPP: No IPv4 network stack attached to 'netdev'.
*
- * 'address' or 'netmask' or both may be null, in which case the address or
+ * 'address' or 'netmask' or both may be null, in which case the address or
* netmask is not reported. */
int
netdev_get_in4(const struct netdev *netdev,
return carrier;
}
+/* Returns the number of times 'netdev''s carrier has changed. */
+long long int
+netdev_get_carrier_resets(const struct netdev *netdev)
+{
+ return (netdev_get_dev(netdev)->netdev_class->get_carrier_resets
+ ? netdev_get_dev(netdev)->netdev_class->get_carrier_resets(netdev)
+ : 0);
+}
+
/* Attempts to force netdev_get_carrier() to poll 'netdev''s MII registers for
* link status instead of checking 'netdev''s carrier. 'netdev''s MII
* registers will be polled once ever 'interval' milliseconds. If 'netdev'
* Calling this function may be more efficient than calling netdev_get_queue()
* for every queue.
*
- * 'cb' must not modify or free the 'details' argument passed in.
+ * 'cb' must not modify or free the 'details' argument passed in. It may
+ * delete or modify the queue passed in as its 'queue_id' argument. It may
+ * modify but must not delete any other queue within 'netdev'. 'cb' should not
+ * add new queues because this may cause some queues to be visited twice or not
+ * at all.
*
* Returns 0 if successful, otherwise a positive errno value. On error, some
* configured queues may not have been included in the iteration. */
{
return netdev_get_dev(netdev)->netdev_class->change_seq(netdev);
}
-
-/* If 'netdev' is a VLAN network device (e.g. one created with vconfig(8)),
- * sets '*vlan_vid' to the VLAN VID associated with that device and returns 0.
- * Otherwise returns a errno value (specifically ENOENT if 'netdev_name' is the
- * name of a network device that is not a VLAN device) and sets '*vlan_vid' to
- * -1. */
-int
-netdev_get_vlan_vid(const struct netdev *netdev, int *vlan_vid)
-{
- int error = (netdev_get_dev(netdev)->netdev_class->get_vlan_vid
- ? netdev_get_dev(netdev)->netdev_class->get_vlan_vid(netdev,
- vlan_vid)
- : ENOENT);
- if (error) {
- *vlan_vid = 0;
- }
- return error;
-}
-
-/* Returns a network device that has 'in4' as its IP address, if one exists,
- * otherwise a null pointer. */
-struct netdev *
-netdev_find_dev_by_in4(const struct in_addr *in4)
-{
- struct netdev *netdev;
- struct sset dev_list = SSET_INITIALIZER(&dev_list);
- const char *name;
-
- netdev_enumerate(&dev_list);
- SSET_FOR_EACH (name, &dev_list) {
- struct in_addr dev_in4;
-
- if (!netdev_open(name, "system", &netdev)
- && !netdev_get_in4(netdev, &dev_in4, NULL)
- && dev_in4.s_addr == in4->s_addr) {
- goto exit;
- }
- netdev_close(netdev);
- }
- netdev = NULL;
-
-exit:
- sset_destroy(&dev_list);
- return netdev;
-}
\f
/* Initializes 'netdev_dev' as a netdev device named 'name' of the specified
* 'netdev_class'. This function is ordinarily called from a netdev provider's
git://git.onelab.eu / sliver-openvswitch.git / blobdiff