Commit 847f0a2b authored by Heiner Kallweit's avatar Heiner Kallweit Committed by Jakub Kicinski
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r8169: disable hw csum for short packets on all chip versions 



RTL8125B has same or similar short packet hw padding bug as RTL8168evl.
The main workaround has been extended accordingly, however we have to
disable also hw checksumming for short packets on affected new chip
versions. Instead of checking for an affected chip version let's
simply disable hw checksumming for short packets in general.

v2:
- remove the version checks and disable short packet hw csum in general
- reflect this in commit title and message

Fixes: 0439297b ("r8169: add support for RTL8125B")
Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/7fbb35f0-e244-ef65-aa55-3872d7d38698@gmail.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent cc6528bc

drivers/net/ethernet/realtek/r8169_main.c

+3 −12
Original line number Diff line number Diff line
@@ -4343,18 +4343,9 @@ static netdev_features_t rtl8169_features_check(struct sk_buff *skb, 
		    rtl_chip_supports_csum_v2(tp))

			features &= ~NETIF_F_ALL_TSO;

	} else if (skb->ip_summed == CHECKSUM_PARTIAL) {

		if (skb->len < ETH_ZLEN) {

			switch (tp->mac_version) {

			case RTL_GIGA_MAC_VER_11:

			case RTL_GIGA_MAC_VER_12:

			case RTL_GIGA_MAC_VER_17:

			case RTL_GIGA_MAC_VER_34:

		/* work around hw bug on some chip versions */

		if (skb->len < ETH_ZLEN)

			features &= ~NETIF_F_CSUM_MASK;

				break;

			default:

				break;

			}

		}



		if (transport_offset > TCPHO_MAX &&

		    rtl_chip_supports_csum_v2(tp))