linux-kernel - [PATCH net] octeontx2-pf: Fix TSOv6 offload

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Date:   Thu, 18 May 2023 12:10:42 +0530
From:   Ratheesh Kannoth <rkannoth@...vell.com>
To:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <sgoutham@...vell.com>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
        <sbhatta@...vell.com>, <gakula@...vell.com>, <schalla@...vell.com>,
        <hkelam@...vell.com>, "Ratheesh Kannoth" <rkannoth@...vell.com>
Subject: [PATCH net] octeontx2-pf: Fix TSOv6 offload

From: Sunil Goutham <sgoutham@...vell.com>

HW adds segment size to the payload length
in the IPv6 header. Fix payload length to
just TCP header length instead of 'TCP header
size + IPv6 header size'.

Fixes: 86d7476078b8 ("octeontx2-pf: TCP segmentation offload support")
Signed-off-by: Sunil Goutham <sgoutham@...vell.com>
Signed-off-by: Ratheesh Kannoth <rkannoth@...vell.com>
---
 drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
index 7045fedfd73a..7af223b0a37f 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
@@ -652,9 +652,7 @@ static void otx2_sqe_add_ext(struct otx2_nic *pfvf, struct otx2_snd_queue *sq,
 				htons(ext->lso_sb - skb_network_offset(skb));
 		} else if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) {
 			ext->lso_format = pfvf->hw.lso_tsov6_idx;
-
-			ipv6_hdr(skb)->payload_len =
-				htons(ext->lso_sb - skb_network_offset(skb));
+			ipv6_hdr(skb)->payload_len = htons(tcp_hdrlen(skb));
 		} else if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
 			__be16 l3_proto = vlan_get_protocol(skb);
 			struct udphdr *udph = udp_hdr(skb);
-- 
2.25.1