From: Wenzhuo Lu <wenzhuo.lu@intel.com>
To: dev@dpdk.org
Cc: Wenzhuo Lu <wenzhuo.lu@intel.com>
Subject: [PATCH] igb: change default RX wthresh back
Date: Thu, 31 Mar 2016 14:18:49 +0800 [thread overview]
Message-ID: <1459405129-12442-1-git-send-email-wenzhuo.lu@intel.com> (raw)
A problem is found on i350 VF. TX will happen once per 4
packets. If only 1~3 packets are received, they will not be
forwarded.
The reason is the default RX write-back threshold is changed
to 4. This patch changes the value back to 0, so every packet
can be handled immediately.
Fixes: 4a41c17dba18 (igb: set default thresholds based on MAC type)
Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
---
drivers/net/e1000/igb_ethdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index bd0ae26..34120ae 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -64,7 +64,7 @@
#define IGB_DEFAULT_RX_PTHRESH ((hw->mac.type == e1000_i354) ? 12 : 8)
#define IGB_DEFAULT_RX_HTHRESH 8
-#define IGB_DEFAULT_RX_WTHRESH ((hw->mac.type == e1000_82576) ? 1 : 4)
+#define IGB_DEFAULT_RX_WTHRESH 0
#define IGB_DEFAULT_TX_PTHRESH ((hw->mac.type == e1000_i354) ? 20 : 8)
#define IGB_DEFAULT_TX_HTHRESH 1
--
1.9.3
next reply other threads:[~2016-03-31 6:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-31 6:18 Wenzhuo Lu [this message]
2016-03-31 7:29 ` [PATCH] igb: change default RX wthresh back Ananyev, Konstantin
2016-04-01 0:39 ` Lu, Wenzhuo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1459405129-12442-1-git-send-email-wenzhuo.lu@intel.com \
--to=wenzhuo.lu@intel.com \
--cc=dev@dpdk.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).