[dpdk-dev] [PATCH] ixgbe: fix TSO in IPv6

David Marchand david.marchand at 6wind.com
Mon Jun 1 14:11:17 CEST 2015


From: Didier Pallard <didier.pallard at 6wind.com>

When TSO is used with IPv6, generated frames are incorrect.
L4 frame is OK, but length field of IPv6 header was not populated correctly.

Signed-off-by: Didier Pallard <didier.pallard at 6wind.com>
---
 drivers/net/ixgbe/ixgbe_rxtx.c |   13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 4f9ab22..d123612 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -375,10 +375,15 @@ ixgbe_set_xmit_ctx(struct ixgbe_tx_queue *txq,
 
 	/* check if TCP segmentation required for this packet */
 	if (ol_flags & PKT_TX_TCP_SEG) {
-		/* implies IP cksum and TCP cksum */
-		type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV4 |
-			IXGBE_ADVTXD_TUCMD_L4T_TCP |
-			IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
+		/* implies IP cksum in IPv4 */
+		if (ol_flags & PKT_TX_IP_CKSUM)
+			type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV4 |
+				IXGBE_ADVTXD_TUCMD_L4T_TCP |
+				IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
+		else
+			type_tucmd_mlhl =
+				IXGBE_ADVTXD_TUCMD_L4T_TCP |
+				IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
 
 		tx_offload_mask.l2_len |= ~0;
 		tx_offload_mask.l3_len |= ~0;
-- 
1.7.10.4



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