Work requests are needed for every ib_post_send(), among them the
ib_post_send() to signal closing. If an smc socket program is cancelled,
the smc connections should be cleaned up, and require sending of closing
signals to the peer. This may fail, if a wait for
a free work request is needed, but is cancelled immediately due to the
cancel interrupt. To guarantee notification of the peer, the wait for
a work request is changed to uninterruptible.
And the area to receive work request completion info with
ib_poll_cq() is cleared first.
And _tx_ variable names are used in the _tx_routines for the
demultiplexing common type in the header.
Signed-off-by: Ursula Braun <ubraun@xxxxxxxxxxxxxxxxxx>
---
net/smc/smc_wr.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/net/smc/smc_wr.c b/net/smc/smc_wr.c
index a4477b4a9c18..5ed94109d1d6 100644
--- a/net/smc/smc_wr.c
+++ b/net/smc/smc_wr.c
@@ -122,6 +122,7 @@ static void smc_wr_tx_tasklet_fn(unsigned long data)
again:
polled++;
do {
+ memset(&wc, 0, sizeof(wc));
rc = ib_poll_cq(dev->roce_cq_send, SMC_WR_MAX_POLL_CQE, wc);
if (polled == 1) {
ib_req_notify_cq(dev->roce_cq_send,
@@ -185,7 +186,7 @@ int smc_wr_tx_get_free_slot(struct smc_link *link,
if (rc)
return rc;
} else {
- rc = wait_event_interruptible_timeout(
+ rc = wait_event_timeout(
link->wr_tx_wait,
(smc_wr_tx_get_free_slot_index(link, &idx) != -EBUSY),
SMC_WR_TX_WAIT_FREE_SLOT_TIME);
@@ -198,8 +199,6 @@ int smc_wr_tx_get_free_slot(struct smc_link *link,
smc_lgr_terminate(lgr);
return -EPIPE;
}
- if (rc == -ERESTARTSYS)
- return -EINTR;
if (idx == link->wr_tx_cnt)
return -EPIPE;
}
@@ -300,18 +299,18 @@ int smc_wr_reg_send(struct smc_link *link, struct ib_mr *mr)
return rc;
}
-void smc_wr_tx_dismiss_slots(struct smc_link *link, u8 wr_rx_hdr_type,
+void smc_wr_tx_dismiss_slots(struct smc_link *link, u8 wr_tx_hdr_type,
smc_wr_tx_filter filter,
smc_wr_tx_dismisser dismisser,
unsigned long data)
{
struct smc_wr_tx_pend_priv *tx_pend;
- struct smc_wr_rx_hdr *wr_rx;
+ struct smc_wr_rx_hdr *wr_tx;
int i;
for_each_set_bit(i, link->wr_tx_mask, link->wr_tx_cnt) {
- wr_rx = (struct smc_wr_rx_hdr *)&link->wr_rx_bufs[i];
- if (wr_rx->type != wr_rx_hdr_type)
+ wr_tx = (struct smc_wr_rx_hdr *)&link->wr_tx_bufs[i];
+ if (wr_tx->type != wr_tx_hdr_type)
continue;
tx_pend = &link->wr_tx_pends[i].priv;
if (filter(tx_pend, data))
--
2.13.5
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