This is a note to let you know that I've just added the patch titled
r8169: fix accessing unset transport header
to the 5.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
r8169-fix-accessing-unset-transport-header.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ccb8de7f444b30b863a18ba49a912c147f192346
Author: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Date: Tue Jul 5 21:15:22 2022 +0200
r8169: fix accessing unset transport header
[ Upstream commit faa4e04e5e140a6d02260289a8fba8fd8d7a3003 ]
66e4c8d95008 ("net: warn if transport header was not set") added
a check that triggers a warning in r8169, see [0].
The commit referenced in the Fixes tag refers to the change from
which the patch applies cleanly, there's nothing wrong with this
commit. It seems the actual issue (not bug, because the warning
is harmless here) was introduced with bdfa4ed68187
("r8169: use Giant Send").
[0] https://bugzilla.kernel.org/show_bug.cgi?id=216157
Fixes: 8d520b4de3ed ("r8169: work around RTL8125 UDP hw bug")
Reported-by: Erhard F. <erhard_f@xxxxxxxxxxx>
Tested-by: Erhard F. <erhard_f@xxxxxxxxxxx>
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Link: https://lore.kernel.org/r/1b2c2b29-3dc0-f7b6-5694-97ec526d51a0@xxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index 33f5c5698ccb..642e435c7031 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -4190,7 +4190,6 @@ static void rtl8169_tso_csum_v1(struct sk_buff *skb, u32 *opts)
static bool rtl8169_tso_csum_v2(struct rtl8169_private *tp,
struct sk_buff *skb, u32 *opts)
{
- u32 transport_offset = (u32)skb_transport_offset(skb);
struct skb_shared_info *shinfo = skb_shinfo(skb);
u32 mss = shinfo->gso_size;
@@ -4207,7 +4206,7 @@ static bool rtl8169_tso_csum_v2(struct rtl8169_private *tp,
WARN_ON_ONCE(1);
}
- opts[0] |= transport_offset << GTTCPHO_SHIFT;
+ opts[0] |= skb_transport_offset(skb) << GTTCPHO_SHIFT;
opts[1] |= mss << TD1_MSS_SHIFT;
} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
u8 ip_protocol;
@@ -4235,7 +4234,7 @@ static bool rtl8169_tso_csum_v2(struct rtl8169_private *tp,
else
WARN_ON_ONCE(1);
- opts[1] |= transport_offset << TCPHO_SHIFT;
+ opts[1] |= skb_transport_offset(skb) << TCPHO_SHIFT;
} else {
unsigned int padto = rtl_quirk_packet_padto(tp, skb);
@@ -4402,14 +4401,13 @@ static netdev_features_t rtl8169_features_check(struct sk_buff *skb,
struct net_device *dev,
netdev_features_t features)
{
- int transport_offset = skb_transport_offset(skb);
struct rtl8169_private *tp = netdev_priv(dev);
if (skb_is_gso(skb)) {
if (tp->mac_version == RTL_GIGA_MAC_VER_34)
features = rtl8168evl_fix_tso(skb, features);
- if (transport_offset > GTTCPHO_MAX &&
+ if (skb_transport_offset(skb) > GTTCPHO_MAX &&
rtl_chip_supports_csum_v2(tp))
features &= ~NETIF_F_ALL_TSO;
} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
@@ -4420,7 +4418,7 @@ static netdev_features_t rtl8169_features_check(struct sk_buff *skb,
if (rtl_quirk_packet_padto(tp, skb))
features &= ~NETIF_F_CSUM_MASK;
- if (transport_offset > TCPHO_MAX &&
+ if (skb_transport_offset(skb) > TCPHO_MAX &&
rtl_chip_supports_csum_v2(tp))
features &= ~NETIF_F_CSUM_MASK;
}
