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IB/cm: cm_init_av_by_path should find a GID by its netdevice 

Previously, the CM has searched the cache for any sgid_index whose
GID matches the path's GID. Since the path record stores the net
device, the CM should now search only for GIDs which originated from
this net device.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-By: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Matan Barak 2015-10-15 18:38:48 +03:00 committed by Doug Ledford
parent ba36e37fd3
commit c2c6ff1345
1 changed files with 5 additions and 2 deletions
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7
drivers/infiniband/core/cm.c
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@ -361,17 +361,21 @@ static int cm_init_av_by_path(struct ib_sa_path_rec *path, struct cm_av *av)
unsigned long flags;
int ret;
u8 p;
struct net_device *ndev = ib_get_ndev_from_path(path);
read_lock_irqsave(&cm.device_lock, flags);
list_for_each_entry(cm_dev, &cm.device_list, list) {
if (!ib_find_cached_gid(cm_dev->ib_device, &path->sgid,
NULL, &p, NULL)) {
ndev, &p, NULL)) {
port = cm_dev->port[p-1];
break;
}
}
read_unlock_irqrestore(&cm.device_lock, flags);
if (ndev)
dev_put(ndev);
if (!port)
return -EINVAL;
@ -384,7 +388,6 @@ static int cm_init_av_by_path(struct ib_sa_path_rec *path, struct cm_av *av)
ib_init_ah_from_path(cm_dev->ib_device, port->port_num, path,
&av->ah_attr);
av->timeout = path->packet_life_time + 1;
memcpy(av->smac, path->smac, sizeof(av->smac));
av->valid = 1;
return 0;