diff options
Diffstat (limited to 'net/smc/smc_cdc.c')
| -rw-r--r-- | net/smc/smc_cdc.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/net/smc/smc_cdc.c b/net/smc/smc_cdc.c index c5e33296e55c..3ca986066f32 100644 --- a/net/smc/smc_cdc.c +++ b/net/smc/smc_cdc.c @@ -56,11 +56,11 @@ static void smc_cdc_tx_handler(struct smc_wr_tx_pend_priv *pnd_snd, } int smc_cdc_get_free_slot(struct smc_connection *conn, + struct smc_link *link, struct smc_wr_buf **wr_buf, struct smc_rdma_wr **wr_rdma_buf, struct smc_cdc_tx_pend **pend) { - struct smc_link *link = conn->lnk; int rc; rc = smc_wr_tx_get_free_slot(link, smc_cdc_tx_handler, wr_buf, @@ -119,13 +119,27 @@ static int smcr_cdc_get_slot_and_msg_send(struct smc_connection *conn) { struct smc_cdc_tx_pend *pend; struct smc_wr_buf *wr_buf; + struct smc_link *link; + bool again = false; int rc; - rc = smc_cdc_get_free_slot(conn, &wr_buf, NULL, &pend); +again: + link = conn->lnk; + rc = smc_cdc_get_free_slot(conn, link, &wr_buf, NULL, &pend); if (rc) return rc; spin_lock_bh(&conn->send_lock); + if (link != conn->lnk) { + /* link of connection changed, try again one time*/ + spin_unlock_bh(&conn->send_lock); + smc_wr_tx_put_slot(link, + (struct smc_wr_tx_pend_priv *)pend); + if (again) + return -ENOLINK; + again = true; + goto again; + } rc = smc_cdc_msg_send(conn, wr_buf, pend); spin_unlock_bh(&conn->send_lock); return rc; |