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authorXin Long <lucien.xin@gmail.com>2019-07-01 19:57:19 +0300
committerDavid S. Miller <davem@davemloft.net>2019-07-03 01:13:15 +0300
commitd2c3a4ba25fbfb6b2c7b5fe423be1b287954cd4c (patch)
treeac0f64e05fe8bdfecc390752134edb389b5f0fbc /net/tipc
parent885b8b4dbba5ca6114db0fcd0737fe2512650745 (diff)
downloadlinux-d2c3a4ba25fbfb6b2c7b5fe423be1b287954cd4c.tar.xz
tipc: remove ub->ubsock checks
Both tipc_udp_enable and tipc_udp_disable are called under rtnl_lock, ub->ubsock could never be NULL in tipc_udp_disable and cleanup_bearer, so remove the check. Also remove the one in tipc_udp_enable by adding "free" label. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
-rw-r--r--net/tipc/udp_media.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index b8962df07d36..c0f694ae57ab 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -759,7 +759,7 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b,
err = dst_cache_init(&ub->rcast.dst_cache, GFP_ATOMIC);
if (err)
- goto err;
+ goto free;
/**
* The bcast media address port is used for all peers and the ip
@@ -771,13 +771,14 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b,
else
err = tipc_udp_rcast_add(b, &remote);
if (err)
- goto err;
+ goto free;
return 0;
-err:
+
+free:
dst_cache_destroy(&ub->rcast.dst_cache);
- if (ub->ubsock)
- udp_tunnel_sock_release(ub->ubsock);
+ udp_tunnel_sock_release(ub->ubsock);
+err:
kfree(ub);
return err;
}
@@ -795,8 +796,7 @@ static void cleanup_bearer(struct work_struct *work)
}
dst_cache_destroy(&ub->rcast.dst_cache);
- if (ub->ubsock)
- udp_tunnel_sock_release(ub->ubsock);
+ udp_tunnel_sock_release(ub->ubsock);
synchronize_net();
kfree(ub);
}
@@ -811,8 +811,7 @@ static void tipc_udp_disable(struct tipc_bearer *b)
pr_err("UDP bearer instance not found\n");
return;
}
- if (ub->ubsock)
- sock_set_flag(ub->ubsock->sk, SOCK_DEAD);
+ sock_set_flag(ub->ubsock->sk, SOCK_DEAD);
RCU_INIT_POINTER(ub->bearer, NULL);
/* sock_release need to be done outside of rtnl lock */