[PATCH 5.19 054/158] bnxt_en: fix LRO/GRO_HW features in ndo_fix_features callback

Greg Kroah-Hartman
2022-08-29T11:23:09Z

From: Vikas Gupta <vikas.gupta@broadcom.com>

[ Upstream commit 366c304741729e64d778c80555d9eb422cf5cc89 ]

LRO/GRO_HW should be disabled if there is an attached XDP program.
BNXT_FLAG_TPA is the current setting of the LRO/GRO_HW. Using
BNXT_FLAG_TPA to disable LRO/GRO_HW will cause these features to be
permanently disabled once they are disabled.

Fixes: 1dc4c557bfed ("bnxt: adding bnxt_xdp_build_skb to build skb from multibuffer xdp_buff")
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index cf9b00576ed36..964354536f9ce 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -11183,10 +11183,7 @@ static netdev_features_t bnxt_fix_features(struct net_device *dev,
if ((features & NETIF_F_NTUPLE) && !bnxt_rfs_capable(bp))
features &= ~NETIF_F_NTUPLE;

- if (bp->flags & BNXT_FLAG_NO_AGG_RINGS)
- features &= ~(NETIF_F_LRO | NETIF_F_GRO_HW);
-
- if (!(bp->flags & BNXT_FLAG_TPA))
+ if ((bp->flags & BNXT_FLAG_NO_AGG_RINGS) || bp->xdp_prog)
features &= ~(NETIF_F_LRO | NETIF_F_GRO_HW);

if (!(features & NETIF_F_GRO))
--
2.35.1