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: 35b2d13fd6fd ("net: add rte prefix to ether defines")
Signed-off-by: SteveX Yang <stevex.y...@intel.com>
---
app/test-pmd/testpmd.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 33fc0fddf..c263121a9 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -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 &=
--
2.17.1
