vport.c (8f0aad6f35f7e8b3118b7b8a65e8e76b135cc4cb) vport.c (12eb18f7115884b0c1513dda31b0051121116b3a)
1/*
2 * Copyright (c) 2007-2014 Nicira, Inc.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of version 2 of the GNU General Public
6 * License as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but

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63 *
64 * Called at module exit time to shutdown the vport subsystem.
65 */
66void ovs_vport_exit(void)
67{
68 kfree(dev_table);
69}
70
1/*
2 * Copyright (c) 2007-2014 Nicira, Inc.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of version 2 of the GNU General Public
6 * License as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but

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63 *
64 * Called at module exit time to shutdown the vport subsystem.
65 */
66void ovs_vport_exit(void)
67{
68 kfree(dev_table);
69}
70
71static struct hlist_head *hash_bucket(struct net *net, const char *name)
71static struct hlist_head *hash_bucket(const struct net *net, const char *name)
72{
73 unsigned int hash = jhash(name, strlen(name), (unsigned long) net);
74 return &dev_table[hash & (VPORT_HASH_BUCKETS - 1)];
75}
76
77int ovs_vport_ops_register(struct vport_ops *ops)
78{
79 int err = -EEXIST;

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102
103/**
104 * ovs_vport_locate - find a port that has already been created
105 *
106 * @name: name of port to find
107 *
108 * Must be called with ovs or RCU read lock.
109 */
72{
73 unsigned int hash = jhash(name, strlen(name), (unsigned long) net);
74 return &dev_table[hash & (VPORT_HASH_BUCKETS - 1)];
75}
76
77int ovs_vport_ops_register(struct vport_ops *ops)
78{
79 int err = -EEXIST;

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102
103/**
104 * ovs_vport_locate - find a port that has already been created
105 *
106 * @name: name of port to find
107 *
108 * Must be called with ovs or RCU read lock.
109 */
110struct vport *ovs_vport_locate(struct net *net, const char *name)
110struct vport *ovs_vport_locate(const struct net *net, const char *name)
111{
112 struct hlist_head *bucket = hash_bucket(net, name);
113 struct vport *vport;
114
115 hlist_for_each_entry_rcu(vport, bucket, hash_node)
116 if (!strcmp(name, vport->ops->get_name(vport)) &&
117 net_eq(ovs_dp_get_net(vport->dp), net))
118 return vport;

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375 *
376 * Sets the vport's upcall_portids to @ids.
377 *
378 * Returns 0 if successful, -EINVAL if @ids is zero length or cannot be parsed
379 * as an array of U32.
380 *
381 * Must be called with ovs_mutex.
382 */
111{
112 struct hlist_head *bucket = hash_bucket(net, name);
113 struct vport *vport;
114
115 hlist_for_each_entry_rcu(vport, bucket, hash_node)
116 if (!strcmp(name, vport->ops->get_name(vport)) &&
117 net_eq(ovs_dp_get_net(vport->dp), net))
118 return vport;

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375 *
376 * Sets the vport's upcall_portids to @ids.
377 *
378 * Returns 0 if successful, -EINVAL if @ids is zero length or cannot be parsed
379 * as an array of U32.
380 *
381 * Must be called with ovs_mutex.
382 */
383int ovs_vport_set_upcall_portids(struct vport *vport, struct nlattr *ids)
383int ovs_vport_set_upcall_portids(struct vport *vport, const struct nlattr *ids)
384{
385 struct vport_portids *old, *vport_portids;
386
387 if (!nla_len(ids) || nla_len(ids) % sizeof(u32))
388 return -EINVAL;
389
390 old = ovsl_dereference(vport->upcall_portids);
391

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466 * @vport: vport that received the packet
467 * @skb: skb that was received
468 * @tun_key: tunnel (if any) that carried packet
469 *
470 * Must be called with rcu_read_lock. The packet cannot be shared and
471 * skb->data should point to the Ethernet header.
472 */
473void ovs_vport_receive(struct vport *vport, struct sk_buff *skb,
384{
385 struct vport_portids *old, *vport_portids;
386
387 if (!nla_len(ids) || nla_len(ids) % sizeof(u32))
388 return -EINVAL;
389
390 old = ovsl_dereference(vport->upcall_portids);
391

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466 * @vport: vport that received the packet
467 * @skb: skb that was received
468 * @tun_key: tunnel (if any) that carried packet
469 *
470 * Must be called with rcu_read_lock. The packet cannot be shared and
471 * skb->data should point to the Ethernet header.
472 */
473void ovs_vport_receive(struct vport *vport, struct sk_buff *skb,
474 struct ovs_tunnel_info *tun_info)
474 const struct ovs_tunnel_info *tun_info)
475{
476 struct pcpu_sw_netstats *stats;
477 struct sw_flow_key key;
478 int error;
479
480 stats = this_cpu_ptr(vport->percpu_stats);
481 u64_stats_update_begin(&stats->syncp);
482 stats->rx_packets++;

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476 struct pcpu_sw_netstats *stats;
477 struct sw_flow_key key;
478 int error;
479
480 stats = this_cpu_ptr(vport->percpu_stats);
481 u64_stats_update_begin(&stats->syncp);
482 stats->rx_packets++;

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