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RDMA/addr: Use appropriate locking with for_each_netdev()

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for_each_netdev() should be used with RTNL or dev_base_lock held,
or else we risk a crash.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Eric Dumazet 2009-11-18 14:24:34 -08:00 committed by Roland Dreier
parent a7ca1f00ed
commit 0f9ea5d2ab
1 changed files with 7 additions and 1 deletions
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8
drivers/infiniband/core/addr.c
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@ -131,6 +131,7 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr)
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
case AF_INET6:
read_lock(&dev_base_lock);
for_each_netdev(&init_net, dev) {
if (ipv6_chk_addr(&init_net,
&((struct sockaddr_in6 *) addr)->sin6_addr,
@ -139,6 +140,7 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr)
break;
}
}
read_unlock(&dev_base_lock);
break;
#endif
}
@ -391,14 +393,17 @@ static int addr_resolve_local(struct sockaddr *src_in,
{
struct in6_addr *a;
read_lock(&dev_base_lock);
for_each_netdev(&init_net, dev)
if (ipv6_chk_addr(&init_net,
&((struct sockaddr_in6 *) dst_in)->sin6_addr,
dev, 1))
break;
if (!dev)
if (!dev) {
read_unlock(&dev_base_lock);
return -EADDRNOTAVAIL;
}
a = &((struct sockaddr_in6 *) src_in)->sin6_addr;
@ -416,6 +421,7 @@ static int addr_resolve_local(struct sockaddr *src_in,
if (!ret)
memcpy(addr->dst_dev_addr, dev->dev_addr, MAX_ADDR_LEN);
}
read_unlock(&dev_base_lock);
break;
}
#endif