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| author | Karsten Graul <kgraul@linux.ibm.com> | 2020-05-30 16:42:37 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-30 18:12:25 -0700 |
| commit | b8ded9de8db34dd209a3dece94cf54fc414e78f7 (patch) | |
| tree | 3dbc406c8c0caec84fbc5763491d86ea13a9a20f /net/smc/smc_cdc.c | |
| parent | b86a372201153326bad2c7048aef1bd7accbcbbc (diff) | |
| download | linux-stable-b8ded9de8db34dd209a3dece94cf54fc414e78f7.tar.gz linux-stable-b8ded9de8db34dd209a3dece94cf54fc414e78f7.tar.bz2 linux-stable-b8ded9de8db34dd209a3dece94cf54fc414e78f7.zip | |
net/smc: pre-fetch send buffer outside of send_lock
Pre-fetch send buffer for the CDC validation message before entering the
send_lock. Without that the send call might fail with -EBUSY because
there are no free buffers and waiting for buffers is not possible under
send_lock.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_cdc.c')
| -rw-r--r-- | net/smc/smc_cdc.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/net/smc/smc_cdc.c b/net/smc/smc_cdc.c index b2b85e1be72c..a47e8855e045 100644 --- a/net/smc/smc_cdc.c +++ b/net/smc/smc_cdc.c @@ -116,19 +116,15 @@ int smc_cdc_msg_send(struct smc_connection *conn, } /* send a validation msg indicating the move of a conn to an other QP link */ -int smcr_cdc_msg_send_validation(struct smc_connection *conn) +int smcr_cdc_msg_send_validation(struct smc_connection *conn, + struct smc_cdc_tx_pend *pend, + struct smc_wr_buf *wr_buf) { struct smc_host_cdc_msg *local = &conn->local_tx_ctrl; struct smc_link *link = conn->lnk; - struct smc_cdc_tx_pend *pend; - struct smc_wr_buf *wr_buf; struct smc_cdc_msg *peer; int rc; - rc = smc_cdc_get_free_slot(conn, link, &wr_buf, NULL, &pend); - if (rc) - return rc; - peer = (struct smc_cdc_msg *)wr_buf; peer->common.type = local->common.type; peer->len = local->len; |