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app/testpmd: fix max Rx packet length for VLAN packet

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When the max Rx packet length is smaller than the sum of MTU size and
ether overhead size, it should be enlarged, otherwise the VLAN packets
will be dropped.

Fixes: 35b2d13fd6 ("net: add rte prefix to ether defines")
Cc: stable@dpdk.org

Signed-off-by: Steve Yang <stevex.yang@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
This commit is contained in:
Steve Yang 2020-11-02 08:52:33 +00:00 committed by Ferruh Yigit
parent 445b0c8eba
commit f6870a7ed6
1 changed files with 23 additions and 0 deletions
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23
app/test-pmd/testpmd.c
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@ -1421,6 +1421,7 @@ init_config(void)
struct rte_gro_param gro_param;
uint32_t gso_types;
uint16_t data_size;
uint16_t overhead_len;
bool warning = 0;
int k;
int ret;
@ -1457,6 +1458,28 @@ init_config(void)
rte_exit(EXIT_FAILURE,
"rte_eth_dev_info_get() failed\n");
/* Update the max_rx_pkt_len to have MTU as RTE_ETHER_MTU */
if (port->dev_info.max_rx_pktlen && port->dev_info.max_mtu)
overhead_len = port->dev_info.max_rx_pktlen -
port->dev_info.max_mtu;
else
overhead_len = RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
port->dev_conf.rxmode.max_rx_pkt_len =
RTE_ETHER_MTU + overhead_len;
/*
* This is workaround to avoid resize max rx packet len.
* Ethdev assumes jumbo frame size must be greater than
* RTE_ETHER_MAX_LEN, and will resize 'max_rx_pkt_len' to
* default value when it is greater than RTE_ETHER_MAX_LEN
* for normal frame.
*/
if (port->dev_conf.rxmode.max_rx_pkt_len > RTE_ETHER_MAX_LEN) {
port->dev_conf.rxmode.offloads |=
DEV_RX_OFFLOAD_JUMBO_FRAME;
}
if (!(port->dev_info.tx_offload_capa &
DEV_TX_OFFLOAD_MBUF_FAST_FREE))
port->dev_conf.txmode.offloads &=