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net: Prevent HW-GRO and LRO features operate together

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LRO and HW-GRO are mutually exclusive, this commit adds this restriction
in netdev_fix_feature. HW-GRO is preferred, that means in case both
HW-GRO and LRO features are requested, LRO is cleared.

Signed-off-by: Ben Ben-ishay <benishay@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Ben Ben-ishay 2020-12-16 12:32:24 +02:00 committed by Saeed Mahameed
parent 7529cc7fbd
commit 54b2b3ecca
1 changed files with 5 additions and 0 deletions
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5
net/core/dev.c
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@ -9922,6 +9922,11 @@ static netdev_features_t netdev_fix_features(struct net_device *dev,
}
}
if ((features & NETIF_F_GRO_HW) && (features & NETIF_F_LRO)) {
netdev_dbg(dev, "Dropping LRO feature since HW-GRO is requested.\n");
features &= ~NETIF_F_LRO;
}
if (features & NETIF_F_HW_TLS_TX) {
bool ip_csum = (features & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)) ==
(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);