From: "Benoît Ganne" <bganne@cisco.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH] net/mlx5: fix link state update
Date: Fri, 27 Mar 2020 18:24:49 +0100 [thread overview]
Message-ID: <20200327172449.6514-1-bganne@cisco.com> (raw)
mlx5 PMD refuses to update link state if link speed is defined but
status is down or if link speed is undefined but status is up, even if
the ioctl() succeeded.
This prevents application to detect link up/down event, especially when
the link speed is not correctly detected.
As link speed is nice to have whereas link status is mandatory for
operations, always update link state regardless of link speed. The
application can then check link speed if needs be.
Signed-off-by: Benoît Ganne <bganne@cisco.com>
---
Following the discussion on dpdk-users [1], I am submitting a tentative
patch.
[1] http://mails.dpdk.org/archives/users/2020-March/thread.html#4744
drivers/net/mlx5/mlx5_ethdev.c | 10 ----------
1 file changed, 10 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index d7d3bc73c..c15f4d62b 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -896,11 +896,6 @@ mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
ETH_LINK_SPEED_FIXED);
- if (((dev_link.link_speed && !dev_link.link_status) ||
- (!dev_link.link_speed && dev_link.link_status))) {
- rte_errno = EAGAIN;
- return -rte_errno;
- }
*link = dev_link;
return 0;
}
@@ -1032,11 +1027,6 @@ mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
ETH_LINK_SPEED_FIXED);
- if (((dev_link.link_speed && !dev_link.link_status) ||
- (!dev_link.link_speed && dev_link.link_status))) {
- rte_errno = EAGAIN;
- return -rte_errno;
- }
*link = dev_link;
return 0;
}
--
2.17.1
next reply other threads:[~2020-03-27 17:25 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-27 17:24 Benoît Ganne [this message]
2020-03-29 7:00 ` Matan Azrad
2020-03-30 9:55 ` Benoit Ganne (bganne)
2020-03-30 10:12 ` Matan Azrad
2020-03-30 12:03 ` Benoit Ganne (bganne)
2020-03-30 13:44 ` Matan Azrad
2020-03-30 13:53 ` Benoit Ganne (bganne)
2020-03-30 16:13 ` Matan Azrad
2020-04-01 10:17 ` Benoit Ganne (bganne)
2020-04-01 12:46 ` Matan Azrad
2020-04-07 12:54 ` Thomas Monjalon
2020-04-07 13:41 ` Benoit Ganne (bganne)
2020-11-19 8:30 ` Matan Azrad
2020-11-19 14:20 ` [dpdk-dev] [PATCH v2] " Raslan Darawsheh
2020-11-19 16:27 ` Raslan Darawsheh
2020-11-19 17:48 ` Ferruh Yigit
2020-11-19 18:42 ` Thomas Monjalon
2020-11-20 10:51 ` Ferruh Yigit
2020-11-20 13:50 ` Thomas Monjalon
2020-11-20 14:21 ` Ferruh Yigit
2020-11-22 10:03 ` Raslan Darawsheh
2020-11-22 10:04 ` [dpdk-dev] [PATCH v3] net/mlx5: allow unknown link speed Raslan Darawsheh
2020-11-22 12:58 ` Raslan Darawsheh
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=20200327172449.6514-1-bganne@cisco.com \
--to=bganne@cisco.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).