diff mbox series

[v3,5/5] net/iavf: fix max mtu size packets with vlan tag cannot be received by default

Message ID 20200923040909.73418-6-stevex.yang@intel.com (mailing list archive)
State Changes Requested, archived
Delegated to: Qi Zhang
Headers show
Series fix default max mtu size when device configured | expand

Checks

Context Check Description
ci/iol-mellanox-Performance success Performance Testing PASS
ci/travis-robot success Travis build: passed
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-testing success Testing PASS
ci/iol-broadcom-Performance success Performance Testing PASS
ci/iol-intel-Functional fail Functional Testing issues
ci/iol-broadcom-Functional success Functional Testing PASS
ci/Intel-compilation success Compilation OK
ci/checkpatch success coding style OK

Commit Message

Steve Yang Sept. 23, 2020, 4:09 a.m. UTC
testpmd will initialize default max packet length to 1518 which doesn't
include vlan tag size in ether overheader. Once, send the max mtu length
packet with vlan tag, the max packet length will exceed 1518 that will
cause packets dropped directly from NIC hw side.

iavf can support dual vlan tags that need more 8 bytes for max packet size,
so, configures the correct max packet size in dev_config ops.

Fixes: 02d212ca3125 ("net/iavf: rename remaining avf strings")

Signed-off-by: SteveX Yang <stevex.yang@intel.com>
---
 drivers/net/iavf/iavf_ethdev.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
index 440da7d76..20581994c 100644
--- a/drivers/net/iavf/iavf_ethdev.c
+++ b/drivers/net/iavf/iavf_ethdev.c
@@ -226,6 +226,11 @@  iavf_dev_configure(struct rte_eth_dev *dev)
 	if (dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG)
 		dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
 
+	/* Considering QinQ packet, max frame size should be MTU and
+	 * corresponding ether overhead.
+	 */
+	iavf_dev_mtu_set(dev, dev->data->mtu);
+
 	/* Vlan stripping setting */
 	if (vf->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_VLAN) {
 		if (dev_conf->rxmode.offloads & DEV_RX_OFFLOAD_VLAN_STRIP)