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| author |   Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> | 2015-03-18 14:50:43 -0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-03-18 22:05:09 -0400 |
| commit | 54ff9ef36bdf84d469a098cbf8e2a103fbc77054 (patch) | |
| tree | 74fb6219d97f44685a80b090888ffd5ea667e01e /net/ipv4/ip_sockglue.c | |
| parent | ipv4,ipv6: grab rtnl before locking the socket (diff) | |
| download | linux-dev-54ff9ef36bdf84d469a098cbf8e2a103fbc77054.tar.xz linux-dev-54ff9ef36bdf84d469a098cbf8e2a103fbc77054.zip | |
ipv4, ipv6: kill ip_mc_{join, leave}_group and ipv6_sock_mc_{join, drop}
in favor of their inner __ ones, which doesn't grab rtnl.
As these functions need to operate on a locked socket, we can't be
grabbing rtnl by then. It's too late and doing so causes reversed
locking.
So this patch:
- move rtnl handling to callers instead while already fixing some
reversed locking situations, like on vxlan and ipvs code.
- renames __ ones to not have the __ mark:
__ip_mc_{join,leave}_group -> ip_mc_{join,leave}_group
__ipv6_sock_mc_{join,drop} -> ipv6_sock_mc_{join,drop}
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_sockglue.c')
| -rw-r--r-- | net/ipv4/ip_sockglue.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index 5171709199f4..f6a0d54b308a 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -541,9 +541,18 @@ static bool setsockopt_needs_rtnl(int optname) switch (optname) { case IP_ADD_MEMBERSHIP: case IP_ADD_SOURCE_MEMBERSHIP: + case IP_BLOCK_SOURCE: case IP_DROP_MEMBERSHIP: + case IP_DROP_SOURCE_MEMBERSHIP: + case IP_MSFILTER: + case IP_UNBLOCK_SOURCE: + case MCAST_BLOCK_SOURCE: + case MCAST_MSFILTER: case MCAST_JOIN_GROUP: + case MCAST_JOIN_SOURCE_GROUP: case MCAST_LEAVE_GROUP: + case MCAST_LEAVE_SOURCE_GROUP: + case MCAST_UNBLOCK_SOURCE: return true; } return false; @@ -861,9 +870,9 @@ static int do_ip_setsockopt(struct sock *sk, int level, } if (optname == IP_ADD_MEMBERSHIP) - err = __ip_mc_join_group(sk, &mreq); + err = ip_mc_join_group(sk, &mreq); else - err = __ip_mc_leave_group(sk, &mreq); + err = ip_mc_leave_group(sk, &mreq); break; } case IP_MSFILTER: @@ -928,7 +937,7 @@ static int do_ip_setsockopt(struct sock *sk, int level, mreq.imr_multiaddr.s_addr = mreqs.imr_multiaddr; mreq.imr_address.s_addr = mreqs.imr_interface; mreq.imr_ifindex = 0; - err = __ip_mc_join_group(sk, &mreq); + err = ip_mc_join_group(sk, &mreq); if (err && err != -EADDRINUSE) break; omode = MCAST_INCLUDE; @@ -960,9 +969,9 @@ static int do_ip_setsockopt(struct sock *sk, int level, mreq.imr_ifindex = greq.gr_interface; if (optname == MCAST_JOIN_GROUP) - err = __ip_mc_join_group(sk, &mreq); + err = ip_mc_join_group(sk, &mreq); else - err = __ip_mc_leave_group(sk, &mreq); + err = ip_mc_leave_group(sk, &mreq); break; } case MCAST_JOIN_SOURCE_GROUP: @@ -1005,7 +1014,7 @@ static int do_ip_setsockopt(struct sock *sk, int level, mreq.imr_multiaddr = psin->sin_addr; mreq.imr_address.s_addr = 0; mreq.imr_ifindex = greqs.gsr_interface; - err = __ip_mc_join_group(sk, &mreq); + err = ip_mc_join_group(sk, &mreq); if (err && err != -EADDRINUSE) break; greqs.gsr_interface = mreq.imr_ifindex; |