[dpdk-dev] [PATCH 3/7] net/bnxt: fix MTU setting

Ajit Khaparde ajit.khaparde at broadcom.com
Sat Sep 1 06:32:50 CEST 2018


The HW can support maximum frame length of 9600 bytes.
And we are currently capping the max frame size to 9500 bytes.

Fixes: daef48efe5e5 ("net/bnxt: support set MTU")
Cc: stable at dpdk.org

Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
---
 drivers/net/bnxt/bnxt.h        | 2 +-
 drivers/net/bnxt/bnxt_ethdev.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
index 8aae0426a..8218635d6 100644
--- a/drivers/net/bnxt/bnxt.h
+++ b/drivers/net/bnxt/bnxt.h
@@ -20,7 +20,7 @@
 
 #include "bnxt_cpr.h"
 
-#define BNXT_MAX_MTU		9500
+#define BNXT_MAX_MTU		9578
 #define VLAN_TAG_SIZE		4
 #define BNXT_VF_RSV_NUM_RSS_CTX	1
 #define BNXT_VF_RSV_NUM_L2_CTX	4
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 70132c705..cae9deea5 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -453,7 +453,7 @@ static void bnxt_dev_info_get_op(struct rte_eth_dev *eth_dev,
 	/* Fast path specifics */
 	dev_info->min_rx_bufsize = 1;
 	dev_info->max_rx_pktlen = BNXT_MAX_MTU + ETHER_HDR_LEN + ETHER_CRC_LEN
-				  + VLAN_TAG_SIZE;
+				  + VLAN_TAG_SIZE * 2;
 
 	dev_info->rx_offload_capa = BNXT_DEV_RX_OFFLOAD_SUPPORT;
 	if (bp->flags & BNXT_FLAG_PTP_SUPPORTED)
-- 
2.15.2 (Apple Git-101.1)



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