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| author | Thibaut VARÈNE <hacks@slashdirt.org> | 2022-04-20 17:57:47 +0200 |
|---|---|---|
| committer | Petr Štetiar <ynezz@true.cz> | 2022-08-28 08:33:46 +0200 |
| commit | 4cb9d08e71a8d4d4f148f29fcbe8554f0815a056 (patch) | |
| tree | c8e12259078e4dc2f29b04384d89addef49ddd3d /package/kernel | |
| parent | 8b552b1d28b55401c865a926eeedf20af9318f4e (diff) | |
| download | upstream-4cb9d08e71a8d4d4f148f29fcbe8554f0815a056.tar.gz upstream-4cb9d08e71a8d4d4f148f29fcbe8554f0815a056.tar.bz2 upstream-4cb9d08e71a8d4d4f148f29fcbe8554f0815a056.zip | |
mt76: backport fix encap offload ethernet type check
The driver needs to check if the format is 802.2 vs 802.3 in order to
set a tx descriptor flag. skb->protocol can't be used, since it may not
be properly initialized for packets coming in from a packet socket. Fix
misdetection by checking the ethertype from the skb data instead.
Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
Signed-off-by: Petr Štetiar <ynezz@true.cz> [commit description]
Diffstat (limited to 'package/kernel')
| -rw-r--r-- | package/kernel/mt76/patches/101-fix-encap-offload-ethernet-type-check.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/package/kernel/mt76/patches/101-fix-encap-offload-ethernet-type-check.patch b/package/kernel/mt76/patches/101-fix-encap-offload-ethernet-type-check.patch new file mode 100644 index 0000000000..d81aa4dfa3 --- /dev/null +++ b/package/kernel/mt76/patches/101-fix-encap-offload-ethernet-type-check.patch @@ -0,0 +1,63 @@ +From: Felix Fietkau <nbd@nbd.name> +To: linux-wireless@vger.kernel.org +Cc: =?utf-8?q?Thibaut_VAR=C3=88NE?= <hacks+kernel@slashdirt.org> +Subject: [PATCH] mt76: fix encap offload ethernet type check +Date: Wed, 20 Apr 2022 14:33:08 +0200 +Message-Id: <20220420123308.70104-1-nbd@nbd.name> + +The driver needs to check if the format is 802.2 vs 802.3 in order to set +a tx descriptor flag. skb->protocol can't be used, since it may not be properly +initialized for packets coming in from a packet socket. +Fix misdetection by checking the ethertype from the skb data instead + +Reported-by: Thibaut VARÈNE <hacks+kernel@slashdirt.org> +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 4 +++- + drivers/net/wireless/mediatek/mt76/mt7921/mac.c | 4 +++- + 2 files changed, 6 insertions(+), 2 deletions(-) + +diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +index 5f4a0e811137..e353e8c44d6c 100644 +--- a/mt7915/mac.c ++++ b/mt7915/mac.c +@@ -1016,6 +1016,7 @@ mt7915_mac_write_txwi_8023(struct mt7915_dev *dev, __le32 *txwi, + + u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK; + u8 fc_type, fc_stype; ++ u16 ethertype; + bool wmm = false; + u32 val; + +@@ -1029,7 +1030,8 @@ mt7915_mac_write_txwi_8023(struct mt7915_dev *dev, __le32 *txwi, + val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_3) | + FIELD_PREP(MT_TXD1_TID, tid); + +- if (be16_to_cpu(skb->protocol) >= ETH_P_802_3_MIN) ++ ethertype = get_unaligned_be16(&skb->data[12]); ++ if (ethertype >= ETH_P_802_3_MIN) + val |= MT_TXD1_ETH_802_3; + + txwi[1] |= cpu_to_le32(val); +diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c +index 368e54c53ddd..ac11e8b28f13 100644 +--- a/mt7921/mac.c ++++ b/mt7921/mac.c +@@ -814,6 +814,7 @@ mt7921_mac_write_txwi_8023(struct mt7921_dev *dev, __le32 *txwi, + { + u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK; + u8 fc_type, fc_stype; ++ u16 ethertype; + bool wmm = false; + u32 val; + +@@ -827,7 +828,8 @@ mt7921_mac_write_txwi_8023(struct mt7921_dev *dev, __le32 *txwi, + val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_3) | + FIELD_PREP(MT_TXD1_TID, tid); + +- if (be16_to_cpu(skb->protocol) >= ETH_P_802_3_MIN) ++ ethertype = get_unaligned_be16(&skb->data[12]); ++ if (ethertype >= ETH_P_802_3_MIN) + val |= MT_TXD1_ETH_802_3; + + txwi[1] |= cpu_to_le32(val); |