[dpdk-dev] [PATCH v1] net: i40e: add VLAN tag size to RXMAX

Vlad Zolotarov vladz at cloudius-systems.com
Mon Aug 31 08:41:45 CEST 2015


HW requires it regardless the presence of the VLAN tag in the received frame.
Otherwise Rx frames are being filtered out on the MTU-4 boundary.

Signed-off-by: Vlad Zolotarov <vladz at cloudius-systems.com>
---
 drivers/net/i40e/i40e_rxtx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index eae4ab0..22aaeb1 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -3156,7 +3156,7 @@ i40e_rx_queue_init(struct i40e_rx_queue *rxq)
 		rx_ctx.hsplit_0 = I40E_HEADER_SPLIT_ALL;
 	else
 		rx_ctx.hsplit_0 = I40E_HEADER_SPLIT_NONE;
-	rx_ctx.rxmax = rxq->max_pkt_len;
+	rx_ctx.rxmax = rxq->max_pkt_len + I40E_VLAN_TAG_SIZE;
 	rx_ctx.tphrdesc_ena = 1;
 	rx_ctx.tphwdesc_ena = 1;
 	rx_ctx.tphdata_ena = 1;
-- 
2.1.0



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