Some packets are discarded by the NIC because they are larger than
the MTU, these packets should be counted as "RX error" instead of
"RX packet", for example:
pkt1 = Ether()/IP()/Raw('x' * 1400)
pkt2 = Ether()/IP()/Raw('x' * 1500)
---------------- Forward statistics for port 0 -----------------
RX-packets: 2 RX-dropped: 0 RX-total: 2
TX-packets: 1 TX-dropped: 0 TX-total: 1
----------------------------------------------------------------
Here the packet pkt2 has been discarded, but still was counted
by "RX-packets"
The register 'GL_RXERR1' can count above discarded packets.
This patch adds reading and calculation of the 'GL_RXERR1' counter
when reporting DPDK statistics.
Fixes: f4a91c38b4ad ("i40e: add extended stats")
Cc: stable@dpdk.org
Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
39e4a2577f