diff options
author | Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> | 2015-03-18 20:50:43 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2015-03-19 05:05:09 +0300 |
commit | 54ff9ef36bdf84d469a098cbf8e2a103fbc77054 (patch) | |
tree | 74fb6219d97f44685a80b090888ffd5ea667e01e /net/ipv6 | |
parent | baf606d9c9b12517e47e0d1370e8aa9f7323f210 (diff) | |
download | linux-54ff9ef36bdf84d469a098cbf8e2a103fbc77054.tar.xz |
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/ipv6')
-rw-r--r-- | net/ipv6/addrconf.c | 4 | ||||
-rw-r--r-- | net/ipv6/ipv6_sockglue.c | 21 | ||||
-rw-r--r-- | net/ipv6/mcast.c | 30 |
3 files changed, 18 insertions, 37 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 88d2cf0cae52..158378e73f0a 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2473,9 +2473,9 @@ static int ipv6_mc_config(struct sock *sk, bool join, lock_sock(sk); if (join) - ret = __ipv6_sock_mc_join(sk, ifindex, addr); + ret = ipv6_sock_mc_join(sk, ifindex, addr); else - ret = __ipv6_sock_mc_drop(sk, ifindex, addr); + ret = ipv6_sock_mc_drop(sk, ifindex, addr); release_sock(sk); return ret; diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index f2b731df8d77..cc5883791bac 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -124,6 +124,11 @@ static bool setsockopt_needs_rtnl(int optname) case IPV6_DROP_MEMBERSHIP: case MCAST_JOIN_GROUP: case MCAST_LEAVE_GROUP: + case MCAST_JOIN_SOURCE_GROUP: + case MCAST_LEAVE_SOURCE_GROUP: + case MCAST_BLOCK_SOURCE: + case MCAST_UNBLOCK_SOURCE: + case MCAST_MSFILTER: return true; } return false; @@ -597,9 +602,9 @@ done: break; if (optname == IPV6_ADD_MEMBERSHIP) - retv = __ipv6_sock_mc_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr); + retv = ipv6_sock_mc_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr); else - retv = __ipv6_sock_mc_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr); + retv = ipv6_sock_mc_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr); break; } case IPV6_JOIN_ANYCAST: @@ -638,11 +643,11 @@ done: } psin6 = (struct sockaddr_in6 *)&greq.gr_group; if (optname == MCAST_JOIN_GROUP) - retv = __ipv6_sock_mc_join(sk, greq.gr_interface, - &psin6->sin6_addr); + retv = ipv6_sock_mc_join(sk, greq.gr_interface, + &psin6->sin6_addr); else - retv = __ipv6_sock_mc_drop(sk, greq.gr_interface, - &psin6->sin6_addr); + retv = ipv6_sock_mc_drop(sk, greq.gr_interface, + &psin6->sin6_addr); break; } case MCAST_JOIN_SOURCE_GROUP: @@ -674,8 +679,8 @@ done: struct sockaddr_in6 *psin6; psin6 = (struct sockaddr_in6 *)&greqs.gsr_group; - retv = __ipv6_sock_mc_join(sk, greqs.gsr_interface, - &psin6->sin6_addr); + retv = ipv6_sock_mc_join(sk, greqs.gsr_interface, + &psin6->sin6_addr); /* prior join w/ different source is ok */ if (retv && retv != -EADDRINUSE) break; diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index 1dd1fedff9f4..cbb66fd3da6d 100644 --- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -132,7 +132,7 @@ static int unsolicited_report_interval(struct inet6_dev *idev) return iv > 0 ? iv : 1; } -int __ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr) +int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr) { struct net_device *dev = NULL; struct ipv6_mc_socklist *mc_lst; @@ -199,24 +199,12 @@ int __ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *add return 0; } -EXPORT_SYMBOL(__ipv6_sock_mc_join); - -int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr) -{ - int ret; - - rtnl_lock(); - ret = __ipv6_sock_mc_join(sk, ifindex, addr); - rtnl_unlock(); - - return ret; -} EXPORT_SYMBOL(ipv6_sock_mc_join); /* * socket leave on multicast group */ -int __ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *addr) +int ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *addr) { struct ipv6_pinfo *np = inet6_sk(sk); struct ipv6_mc_socklist *mc_lst; @@ -255,18 +243,6 @@ int __ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *add return -EADDRNOTAVAIL; } -EXPORT_SYMBOL(__ipv6_sock_mc_drop); - -int ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *addr) -{ - int ret; - - rtnl_lock(); - ret = __ipv6_sock_mc_drop(sk, ifindex, addr); - rtnl_unlock(); - - return ret; -} EXPORT_SYMBOL(ipv6_sock_mc_drop); /* called with rcu_read_lock() */ @@ -460,7 +436,7 @@ done: read_unlock_bh(&idev->lock); rcu_read_unlock(); if (leavegroup) - return ipv6_sock_mc_drop(sk, pgsr->gsr_interface, group); + err = ipv6_sock_mc_drop(sk, pgsr->gsr_interface, group); return err; } |