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From: Raslan Darawsheh <rasland@nvidia.com>
To: <dev@dpdk.org>
Cc: <matan@nvidia.com>, <viacheslavo@nvidia.com>,
	<thomas@monjalon.net>, Benoît Ganne <bganne@cisco.com>
Subject: [dpdk-dev] [PATCH v2] net/mlx5: fix link state update
Date: Thu, 19 Nov 2020 16:20:18 +0200
Message-ID: <20201119142018.25277-1-rasland@nvidia.com> (raw)
In-Reply-To: <20200327172449.6514-1-bganne@cisco.com>

From: Benoît Ganne <bganne@cisco.com>

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>
Signed-off-by: Raslan Darawsheh <rasland@nvidia.com>
---
 doc/guides/rel_notes/release_20_11.rst  |  1 +
 drivers/net/mlx5/linux/mlx5_ethdev_os.c | 10 ----------
 2 files changed, 1 insertion(+), 10 deletions(-)

diff --git a/doc/guides/rel_notes/release_20_11.rst b/doc/guides/rel_notes/release_20_11.rst
index 1c262d39a5..75b4ebc84b 100644
--- a/doc/guides/rel_notes/release_20_11.rst
+++ b/doc/guides/rel_notes/release_20_11.rst
@@ -207,6 +207,7 @@ New Features
     by rte_flow API.
   * Added support of Age action query.
   * Added support of multi-ports hairpin.
+  * Allow unknown link speed.
 
   Updated Mellanox mlx5 vDPA driver:
 
diff --git a/drivers/net/mlx5/linux/mlx5_ethdev_os.c b/drivers/net/mlx5/linux/mlx5_ethdev_os.c
index 19b281925f..f7ef1492b1 100644
--- a/drivers/net/mlx5/linux/mlx5_ethdev_os.c
+++ b/drivers/net/mlx5/linux/mlx5_ethdev_os.c
@@ -425,11 +425,6 @@ 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;
 }
@@ -571,11 +566,6 @@ 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


  parent reply	other threads:[~2020-11-19 14:20 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-27 17:24 [dpdk-dev] [PATCH] " Benoît Ganne
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 ` Raslan Darawsheh [this message]
2020-11-19 16:27   ` [dpdk-dev] [PATCH v2] " 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

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