linux-kernel - [PATCH] net/mlx4_en: fix mlx4 ethtool -N insertion

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Message-Id: <20191115201225.92888-1-lrizzo@google.com>
Date:   Fri, 15 Nov 2019 12:12:25 -0800
From:   Luigi Rizzo <lrizzo@...gle.com>
To:     netdev@...r.kernel.org
Cc:     linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
        Luigi Rizzo <lrizzo@...gle.com>
Subject: [PATCH] net/mlx4_en: fix mlx4 ethtool -N insertion

ethtool expects ETHTOOL_GRXCLSRLALL to set ethtool_rxnfc->data with the
total number of entries in the rx classifier table.  Surprisingly, mlx4
is missing this part (in principle ethtool could still move forward and
try the insert).

Tested: compiled and run command:
	phh13:~# ethtool -N eth1 flow-type udp4  queue 4
	Added rule with ID 255

Signed-off-by: Luigi Rizzo <lrizzo@...gle.com>
Change-Id: I18a72f08dfcfb6b9f6aa80fbc12d58553e1fda76
---
 drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index d8313e2ee6002..c12da02c2d1bd 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -1745,6 +1745,7 @@ static int mlx4_en_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
 		err = mlx4_en_get_flow(dev, cmd, cmd->fs.location);
 		break;
 	case ETHTOOL_GRXCLSRLALL:
+		cmd->data = MAX_NUM_OF_FS_RULES;
 		while ((!err || err == -ENOENT) && priority < cmd->rule_cnt) {
 			err = mlx4_en_get_flow(dev, cmd, i);
 			if (!err)
-- 
2.24.0.432.g9d3f5f5b63-goog