linux-kernel - [PATCH 3/3] net: xilinx: axienet: Relax partial rx checksum checks

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Message-Id: <20240903184334.4150843-4-sean.anderson@linux.dev>
Date: Tue,  3 Sep 2024 14:43:34 -0400
From: Sean Anderson <sean.anderson@...ux.dev>
To: Radhey Shyam Pandey <radhey.shyam.pandey@....com>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org
Cc: Michal Simek <michal.simek@....com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Sean Anderson <sean.anderson@...ux.dev>
Subject: [PATCH 3/3] net: xilinx: axienet: Relax partial rx checksum checks

The partial rx checksum feature computes a checksum over the entire
packet, regardless of the L3 protocol. Remove the check for IPv4.
Additionally, packets under 64 bytes should have been dropped by the
MAC, so we can remove the length check as well.

Signed-off-by: Sean Anderson <sean.anderson@...ux.dev>
---

 drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index 74fade5a95c2..99d08a775520 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -1188,9 +1188,7 @@ static int axienet_rx_poll(struct napi_struct *napi, int budget)
 				    csumstatus == XAE_IP_UDP_CSUM_VALIDATED) {
 					skb->ip_summed = CHECKSUM_UNNECESSARY;
 				}
-			} else if ((lp->features & XAE_FEATURE_PARTIAL_RX_CSUM) != 0 &&
-				   skb->protocol == htons(ETH_P_IP) &&
-				   skb->len > 64) {
+			} else if (lp->features & XAE_FEATURE_PARTIAL_RX_CSUM) {
 				skb->csum = be32_to_cpu(cur_p->app3 & 0xFFFF);
 				skb->ip_summed = CHECKSUM_COMPLETE;
 			}
-- 
2.35.1.1320.gc452695387.dirty