From: Ajit Khaparde <ajit.khaparde@broadcom.com>
To: dev@dpdk.org
Cc: ferruh.yigit@intel.com, stable@dpdk.org
Subject: [dpdk-stable] [PATCH 28/31] net/bnxt: fix set MTU
Date: Tue, 19 Jun 2018 14:30:55 -0700 [thread overview]
Message-ID: <20180619213058.12273-29-ajit.khaparde@broadcom.com> (raw)
In-Reply-To: <20180619213058.12273-1-ajit.khaparde@broadcom.com>
There is no need to update hardware configuration if new MTU is
not greater than the max data the mbuf can accommodate.
Fixes: daef48efe5e5 ("net/bnxt: support set MTU")
Cc: stable@dpdk.org
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
drivers/net/bnxt/bnxt_ethdev.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 9cfa43778..1145bc195 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -1597,6 +1597,7 @@ static int bnxt_mtu_set_op(struct rte_eth_dev *eth_dev, uint16_t new_mtu)
for (i = 0; i < bp->nr_vnics; i++) {
struct bnxt_vnic_info *vnic = &bp->vnic_info[i];
+ uint16_t size = 0;
vnic->mru = bp->eth_dev->data->mtu + ETHER_HDR_LEN +
ETHER_CRC_LEN + VLAN_TAG_SIZE * 2;
@@ -1604,9 +1605,14 @@ static int bnxt_mtu_set_op(struct rte_eth_dev *eth_dev, uint16_t new_mtu)
if (rc)
break;
- rc = bnxt_hwrm_vnic_plcmode_cfg(bp, vnic);
- if (rc)
- return rc;
+ size = rte_pktmbuf_data_room_size(bp->rx_queues[0]->mb_pool);
+ size -= RTE_PKTMBUF_HEADROOM;
+
+ if (size < new_mtu) {
+ rc = bnxt_hwrm_vnic_plcmode_cfg(bp, vnic);
+ if (rc)
+ return rc;
+ }
}
return rc;
--
2.15.1 (Apple Git-101)
next prev parent reply other threads:[~2018-06-19 21:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20180619213058.12273-1-ajit.khaparde@broadcom.com>
2018-06-19 21:30 ` [dpdk-stable] [PATCH 01/31] net/bnxt: fix clear port stats Ajit Khaparde
2018-06-19 21:30 ` [dpdk-stable] [PATCH 05/31] net/bnxt: fix dev close operation Ajit Khaparde
2018-06-26 15:28 ` Ferruh Yigit
2018-06-28 20:16 ` Ajit Khaparde
2018-06-19 21:30 ` [dpdk-stable] [PATCH 07/31] net/bnxt: fix HW Tx checksum offload check Ajit Khaparde
2018-06-19 21:30 ` [dpdk-stable] [PATCH 25/31] net/bnxt: fix Tx with multiple mbuf Ajit Khaparde
2018-06-19 21:30 ` Ajit Khaparde [this message]
2018-06-26 15:30 ` [dpdk-stable] [PATCH 28/31] net/bnxt: fix set MTU Ferruh Yigit
2018-06-28 20:13 ` Ajit Khaparde
2018-06-19 21:30 ` [dpdk-stable] [PATCH 29/31] net/bnxt: fix incorrect IO address handling in Tx Ajit Khaparde
2018-06-19 21:30 ` [dpdk-stable] [PATCH 31/31] net/bnxt: fix to move a flow to a different queue Ajit Khaparde
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