Hi,

I have a dpdk application sending broadcast packet in vlan 0x248. and I started dpdk-testpmd on rx only mode.

The dpdk-testpmd received the packet with vlan header (as expected) as below from gdb output:

(gdb) x/100xb (pkts_burst[4]->buf_addr+pkts_burst[4]->data_off)

0x17787c8c0:    0xff    0xff    0xff    0xff    0xff    0xff    0xfe    0x1a

0x17787c8c8:    0xcc    0x2e    0x6e    0x78    0x81    0x00    0x02    0x48

0x17787c8d0:    0x89    0x51    0x40    0x00    0x00    0x00    0x00    0x00

...

Then I enable vlan strip via below command

testpmd> vlan set strip on 0

Now the vlan is stripped (as expected) as below:

(gdb) x/100xb (pkts_burst[0]->buf_addr+pkts_burst[0]->data_off)

0x1775b8a80:    0xff    0xff    0xff    0xff    0xff    0xff    0xfe    0x1a

0x1775b8a88:    0xcc    0x2e    0x6e    0x78    0x89    0x51    0x40    0x00

0x1775b8a90:    0x00    0x00    0x00    0x00    0x00    0x00    0x03    0x00

…

But (what is not expected) the mbuf vlan_tci is not filled, as below:

gdb) p *pkts_burst[4]

$8 = {cacheline0 = 0x17787c740, buf_addr = 0x17787c7c0, buf_iova = 6300354496,

  rearm_data = 0x17787c750, data_off = 256, refcnt = 1, nb_segs = 1, port = 0,

ol_flags = 384, rx_descriptor_fields1 = 0x17787c760, {packet_type = 1, {

      l2_type = 1 '\001', l3_type = 0 '\000', l4_type = 0 '\000',

      tun_type = 0 '\000', {inner_esp_next_proto = 0 '\000', {

          inner_l2_type = 0 '\000', inner_l3_type = 0 '\000'}},

      inner_l4_type = 0 '\000'}}, pkt_len = 60, data_len = 60, vlan_tci = 0, {

    hash = {rss = 0, fdir = {{{hash = 0, id = 0}, lo = 0}, hi = 0}, sched = {

        queue_id = 0, traffic_class = 0 '\000', color = 0 '\000', reserved = 0},

      txadapter = {reserved1 = 0, reserved2 = 0, txq = 0}, usr = 0}},

  vlan_tci_outer = 0, buf_len = 2304, pool = 0x23b1e98c0, cacheline1 = 0x17787c780,

  next = 0x0, {tx_offload = 0, {l2_len = 0, l3_len = 0, l4_len = 0, tso_segsz = 0,

      outer_l3_len = 0, outer_l2_len = 0}}, shinfo = 0x0, priv_size = 0,

  timesync = 0, dynfield1 = {0, 0, 0, 0, 0, 0, 0, 0, 0}}

Is there something wrong in the iavf pmd driver?

dpdk version: 21.11-0 (iavf pmd driver, and rx burst function is iavf_recv_pkts_vec_avx2)

hw: intel E810 SRIOV VF

PF driver and firmware in use:

[cranuser2@hzdc-ecp-10-110-8-222 ~]$ ethtool -i ens43f2

driver: ice

version: 4.18.0-372.26.1.el8_6.x86_64

firmware-version: 3.10 0x8000ad3d 1.3106.0

expansion-rom-version:

bus-info: 0000:8a:00.2

supports-statistics: yes

supports-test: yes

supports-eeprom-access: yes

supports-register-dump: yes

supports-priv-flags: yes

Thank you.