From caae91b5ef27124caf9adc1b46b40a3491f49bee Mon Sep 17 00:00:00 2001
From: Manish Rangankar <manish.rangankar@cavium.com>
Date: Wed, 24 Oct 2018 07:22:05 -0400
Subject: [PATCH] iscsiuio: Do not flush tx queue on each uio interrupt.
Unlike bnx2x, qedi start_xmit netlink provide us guarantee
of transmitting LL2 packet, so there is no need to call clear_tx_intr for
each LL2 packet. This help us in reducing iscsiuio lock contention.
Signed-off-by: Manish Rangankar <manish.rangankar@cavium.com>
---
iscsiuio/src/unix/nic.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/iscsiuio/src/unix/nic.c b/iscsiuio/src/unix/nic.c
index dfc2ad0a7a7b..29c4332a3162 100644
--- a/iscsiuio/src/unix/nic.c
+++ b/iscsiuio/src/unix/nic.c
@@ -799,9 +799,12 @@ int nic_process_intr(nic_t *nic, int discard_check)
nic->intr_count = count;
- LOG_DEBUG(PFX "%s: host:%d - calling clear_tx_intr from process_intr",
- nic->log_name, nic->host_no);
- (*nic->ops->clear_tx_intr) (nic);
+ if (strcmp(nic->ops->description, "qedi")) {
+ LOG_DEBUG(PFX "%s: host:%d - calling clear_tx_intr from process_intr",
+ nic->log_name, nic->host_no);
+ (*nic->ops->clear_tx_intr) (nic);
+ }
+
ret = 1;
}
pthread_mutex_unlock(&nic->nic_mutex);
--
2.17.2