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net: libwx: fix Tx L4 checksum

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commit c7d82913d5f9e97860772ee4051eaa66b56a6273 upstream.

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: 3403960cdf ("net: wangxun: libwx add tx offload functions")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Link: https://patch.msgid.link/20250324103235.823096-2-jiawenwu@trustnetic.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Wenshan Lan <jetlan9@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiawen Wu
2025-03-24 18:32:35 +08:00
committed by Greg Kroah-Hartman
parent c216c235ac
commit 6d56ea133a
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/wangxun/libwx/wx_lib.c
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@@ -1336,6 +1336,7 @@ 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;
@@ -1429,7 +1430,8 @@ 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 */