From: "Wei Hu (Xavier)" <xavier.hu...@huawei.com>
Currently, Rx offload capabilities and max_rx_pkt_len in the struct
variable named rte_port are not updated after setting mtu successfully
in port_mtu_set function by 'port config mtu <port_id> <value>' command.
This may lead to reconfig mtu to the initial value in the driver when
recalling rte_eth_dev_configure API interface.
This patch updates Rx offload capabilities and max_rx_pkt_len after
setting mtu successfully when configuring mtu.
Fixes: ae03d0d18adf ("app/testpmd: command to configure MTU")
Cc: sta...@dpdk.org
Signed-off-by: Huisong Li <lihuis...@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.hu...@huawei.com>
---
v1 -> v2:
Address the comments form Ferruh Yigit, the related link as below:
http://patches.dpdk.org/patch/65007/
---
app/test-pmd/config.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 9669cbd4c..409c1327a 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -1216,7 +1216,9 @@ void
port_mtu_set(portid_t port_id, uint16_t mtu)
{
int diag;
+ struct rte_port *rte_port = &ports[port_id];
struct rte_eth_dev_info dev_info;
+ uint16_t eth_overhead;
int ret;
if (port_id_is_invalid(port_id, ENABLED_WARN))
@@ -1232,8 +1234,25 @@ port_mtu_set(portid_t port_id, uint16_t mtu)
return;
}
diag = rte_eth_dev_set_mtu(port_id, mtu);
- if (diag == 0)
+ if (diag == 0 &&
+ dev_info.rx_offload_capa & DEV_RX_OFFLOAD_JUMBO_FRAME) {
+ /*
+ * Ether overhead in driver is equal to the difference of
+ * max_rx_pktlen and max_mtu in rte_eth_dev_info when the
+ * device supports jumbo frame.
+ */
+ eth_overhead = dev_info.max_rx_pktlen - dev_info.max_mtu;
+ if (mtu > RTE_ETHER_MAX_LEN - eth_overhead) {
+ rte_port->dev_conf.rxmode.offloads |=
+ DEV_RX_OFFLOAD_JUMBO_FRAME;
+ rte_port->dev_conf.rxmode.max_rx_pkt_len =
+ mtu + eth_overhead;
+ } else
+ rte_port->dev_conf.rxmode.offloads &=
+ ~DEV_RX_OFFLOAD_JUMBO_FRAME;
+
return;
+ }
printf("Set MTU failed. diag=%d\n", diag);
}
--
2.23.0
