Commit c7d82913 authored by Jiawen Wu's avatar Jiawen Wu Committed by Jakub Kicinski
Browse files

net: libwx: fix Tx L4 checksum 



The hardware only supports L4 checksum offload for TCP/UDP/SCTP protocol.
There was a bug to set Tx checksum flag for the other protocol that results
in Tx ring hang. Fix to compute software checksum for these packets.

Fixes: 3403960c ("net: wangxun: libwx add tx offload functions")
Signed-off-by: default avatarJiawen Wu <jiawenwu@trustnetic.com>
Link: https://patch.msgid.link/20250324103235.823096-2-jiawenwu@trustnetic.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent a44940d0

drivers/net/ethernet/wangxun/libwx/wx_lib.c

+3 −1
Original line number Diff line number Diff line
@@ -1337,6 +1337,7 @@ static void wx_tx_csum(struct wx_ring *tx_ring, struct wx_tx_buffer *first, 
	u8 tun_prot = 0;



	if (skb->ip_summed != CHECKSUM_PARTIAL) {

csum_failed:

		if (!(first->tx_flags & WX_TX_FLAGS_HW_VLAN) &&

		    !(first->tx_flags & WX_TX_FLAGS_CC))

			return;
@@ -1441,7 +1442,8 @@ static void wx_tx_csum(struct wx_ring *tx_ring, struct wx_tx_buffer *first, 
					WX_TXD_L4LEN_SHIFT;

			break;

		default:

			break;

			skb_checksum_help(skb);

			goto csum_failed;

		}



		/* update TX checksum flag */