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