thunderx pmd driver passes dev_info.max_rx_pktlen as
9200 (via rte_eth_dev_info_get()) to application.
But, when application tries to set MTU as
(9200 - sizeof(ethernet_header_t)) the operation fails
because of missing CRC and VLAN additions.
This patch fixes the following for thunderx pmd driver:
- Sets NIC_HW_MAX_FRS to 9216 (instead of 9200)
- Sets NIC_HW_MAX_MTU to 9190 (NIC_HW_MAX_FRS - ETH_HLEN
- ETHER_CRC_LEN - 2*VLAN_HLEN)
- Sets dev_info->max_rx_pkt_len to NIC_HW_MAX_MTU +
ETH_HLEN (instead of 9200)
- Allows rte_eth_dev_set_mtu() to pass if application
(like VPP) calls rte_eth_dev_set_mtu() before
rte_eth_dev_start() by putting appropriate check for
dev->data->dev_started
Fixes: 65d9804edc05 ("net/thunderx: support MTU configuration")
Cc: stable@dpdk.org
Signed-off-by: Nitin Saxena <nitin.saxena@caviumnetworks.com>
Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
c77875fbb8