diff options
| author | Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com> | 2017-01-24 13:00:47 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-01-24 22:14:58 +0100 |
| commit | 4c887aa65d38633885010277f3482400681be719 (patch) | |
| tree | 8fb8f5a432aee0221919bc347bbbaef9df4fadeb /net/tipc/server.c | |
| parent | tipc: fix nametbl_lock soft lockup at module exit (diff) | |
| download | linux-4c887aa65d38633885010277f3482400681be719.tar.xz linux-4c887aa65d38633885010277f3482400681be719.zip | |
tipc: ignore requests when the connection state is not CONNECTED
In tipc_conn_sendmsg(), we first queue the request to the outqueue
followed by the connection state check. If the connection is not
connected, we should not queue this message.
In this commit, we reject the messages if the connection state is
not CF_CONNECTED.
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Tested-by: John Thompson <thompa.atl@gmail.com>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/server.c')
| -rw-r--r-- | net/tipc/server.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/net/tipc/server.c b/net/tipc/server.c index 826cde2c401e..04ff441b8065 100644 --- a/net/tipc/server.c +++ b/net/tipc/server.c @@ -453,6 +453,11 @@ int tipc_conn_sendmsg(struct tipc_server *s, int conid, if (!con) return -EINVAL; + if (!test_bit(CF_CONNECTED, &con->flags)) { + conn_put(con); + return 0; + } + e = tipc_alloc_entry(data, len); if (!e) { conn_put(con); @@ -466,12 +471,8 @@ int tipc_conn_sendmsg(struct tipc_server *s, int conid, list_add_tail(&e->list, &con->outqueue); spin_unlock_bh(&con->outqueue_lock); - if (test_bit(CF_CONNECTED, &con->flags)) { - if (!queue_work(s->send_wq, &con->swork)) - conn_put(con); - } else { + if (!queue_work(s->send_wq, &con->swork)) conn_put(con); - } return 0; } @@ -495,7 +496,7 @@ static void tipc_send_to_sock(struct tipc_conn *con) int ret; spin_lock_bh(&con->outqueue_lock); - while (1) { + while (test_bit(CF_CONNECTED, &con->flags)) { e = list_entry(con->outqueue.next, struct outqueue_entry, list); if ((struct list_head *) e == &con->outqueue) |