[dpdk-dev] [PATCH v4 14/22] net/sfc: fix the jumbo frame flag condition for mtu set
Steve Yang
stevex.yang at intel.com
Mon Jan 18 08:04:20 CET 2021
The jumbo frame uses the 'RTE_ETHER_MAX_LEN' as boundary condition,
but the Ether overhead is larger than 18 when it supports VLAN tag.
That will cause the jumbo flag rx offload is wrong when MTU size is
'RTE_ETHER_MTU'.
This fix will change the boundary condition with 'RTE_ETHER_MTU',
that perhaps impacts the cases of the jumbo frame related.
Fixes: ff6a1197c3b1 ("net/sfc: convert to new Rx offload API")
Cc: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>
Signed-off-by: Steve Yang <stevex.yang at intel.com>
---
drivers/net/sfc/sfc_ethdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index 93fc7baa0d..f2f5336435 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -1017,7 +1017,7 @@ sfc_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
* The driver does not use it, but other PMDs update jumbo frame
* flag and max_rx_pkt_len when MTU is set.
*/
- if (mtu > RTE_ETHER_MAX_LEN) {
+ if (mtu > RTE_ETHER_MTU) {
struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
rxmode->offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
}
--
2.17.1
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