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| author |   Eric Dumazet <eric.dumazet@gmail.com> | 2010-10-19 00:39:18 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-10-19 03:50:47 -0700 |
| commit | 9e917dca74138cccf398ce8bb924c7fd2980ec1d (patch) | |
| tree | 9aeaa145a5a2b4a513a814eb41f05bd2446ddfe5 /net/ipv4/igmp.c | |
| parent | 3c52x: remove IRQF_SAMPLE_RANDOM from legacy MCA drivers. (diff) | |
| download | linux-dev-9e917dca74138cccf398ce8bb924c7fd2980ec1d.tar.xz linux-dev-9e917dca74138cccf398ce8bb924c7fd2980ec1d.zip | |
net: avoid a dev refcount in ip_mc_find_dev()
We hold RTNL in ip_mc_find_dev(), no need to touch device refcount.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/igmp.c')
| -rw-r--r-- | net/ipv4/igmp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index 25f339672b28..a525328ec372 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -1418,6 +1418,7 @@ void ip_mc_destroy_dev(struct in_device *in_dev) write_unlock_bh(&in_dev->mc_list_lock); } +/* RTNL is locked */ static struct in_device *ip_mc_find_dev(struct net *net, struct ip_mreqn *imr) { struct flowi fl = { .nl_u = { .ip4_u = @@ -1433,10 +1434,9 @@ static struct in_device *ip_mc_find_dev(struct net *net, struct ip_mreqn *imr) return idev; } if (imr->imr_address.s_addr) { - dev = ip_dev_find(net, imr->imr_address.s_addr); + dev = __ip_dev_find(net, imr->imr_address.s_addr, false); if (!dev) return NULL; - dev_put(dev); } if (!dev && !ip_route_output_key(net, &rt, &fl)) { |