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| author |   Eric Dumazet <eric.dumazet@gmail.com> | 2009-11-18 14:24:34 -0800 |
|---|---|---|
| committer |   Roland Dreier <rolandd@cisco.com> | 2009-11-18 14:24:34 -0800 |
| commit | 0f9ea5d2ab5cef732d5abbe62b9e9af3007bae81 (patch) | |
| tree | f5d3f3583c991b6f162cd91f9bffdc0937b12720 /drivers/infiniband/core/addr.c | |
| parent | RDMA/ucma: Add option to manually set IB path (diff) | |
| download | linux-dev-0f9ea5d2ab5cef732d5abbe62b9e9af3007bae81.tar.xz linux-dev-0f9ea5d2ab5cef732d5abbe62b9e9af3007bae81.zip | |
RDMA/addr: Use appropriate locking with for_each_netdev()
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>
Diffstat (limited to 'drivers/infiniband/core/addr.c')
| -rw-r--r-- | drivers/infiniband/core/addr.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c index bd07803e9183..373f1118d57b 100644 --- a/drivers/infiniband/core/addr.c +++ b/drivers/infiniband/core/addr.c @@ -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 |