net/smc: enable fallback for connection abort in state INIT

If a linkgroup is terminated abnormally already due to failing
LLC CONFIRM LINK or LLC ADD LINK, fallback to TCP is still possible.
In this case do not switch to state SMC_PEERABORTWAIT and do not set
sk_err.

Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/smc/smc_close.c b/net/smc/smc_close.c
index ac961df..ea2b87f 100644 (file)
--- a/net/smc/smc_close.c
+++ b/net/smc/smc_close.c
@@ -100,15 +100,14 @@ static void smc_close_active_abort(struct smc_sock *smc)
        struct smc_cdc_conn_state_flags *txflags =
                &smc->conn.local_tx_ctrl.conn_state_flags;
 
-       sk->sk_err = ECONNABORTED;
-       if (smc->clcsock && smc->clcsock->sk) {
-               smc->clcsock->sk->sk_err = ECONNABORTED;
-               smc->clcsock->sk->sk_state_change(smc->clcsock->sk);
+       if (sk->sk_state != SMC_INIT && smc->clcsock && smc->clcsock->sk) {
+               sk->sk_err = ECONNABORTED;
+               if (smc->clcsock && smc->clcsock->sk) {
+                       smc->clcsock->sk->sk_err = ECONNABORTED;
+                       smc->clcsock->sk->sk_state_change(smc->clcsock->sk);
+               }
        }
        switch (sk->sk_state) {
-       case SMC_INIT:
-               sk->sk_state = SMC_PEERABORTWAIT;
-               break;
        case SMC_ACTIVE:
                sk->sk_state = SMC_PEERABORTWAIT;
                release_sock(sk);
@@ -143,6 +142,7 @@ static void smc_close_active_abort(struct smc_sock *smc)
        case SMC_PEERFINCLOSEWAIT:
                sock_put(sk); /* passive closing */
                break;
+       case SMC_INIT:
        case SMC_PEERABORTWAIT:
        case SMC_CLOSED:
                break;