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authorHeiner Kallweit <hkallweit1@gmail.com>2020-11-05 18:14:47 +0100
committerJakub Kicinski <kuba@kernel.org>2020-11-07 21:14:35 +0100
commit847f0a2bfd2fe16d6afa537816b313b71f32e139 (patch)
treea0ae73b51fc4bcd2023f69d26414b95a2ec94bb3 /drivers
parentr8169: fix potential skb double free in an error path (diff)
downloadlinux-847f0a2bfd2fe16d6afa537816b313b71f32e139.tar.xz
linux-847f0a2bfd2fe16d6afa537816b313b71f32e139.zip
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: 0439297be951 ("r8169: add support for RTL8125B") Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Link: https://lore.kernel.org/r/7fbb35f0-e244-ef65-aa55-3872d7d38698@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/realtek/r8169_main.c15
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index 4cb43a980ce9..85d9c3e30c69 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -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:
- features &= ~NETIF_F_CSUM_MASK;
- break;
- default:
- break;
- }
- }
+ /* work around hw bug on some chip versions */
+ if (skb->len < ETH_ZLEN)
+ features &= ~NETIF_F_CSUM_MASK;
if (transport_offset > TCPHO_MAX &&
rtl_chip_supports_csum_v2(tp))