VLAN packets with ip length bigger than 1496 will not be received by
i40e/i40evf due to wrong packets size checking. This patch fixes the
issue by correcting the maximum frame size during checking.
Fixes: 43e5488c0ac6 ("net/i40e: support MTU configuration")
Cc: sta...@dpdk.org
Signed-off-by: Xiao Zhang <xiao.zh...@intel.com>
---
v3
Checking more places using max packet len.
v2
Add fix for i40evf and correct the checking when using the max_pkt_len.
---
drivers/net/i40e/i40e_ethdev.c | 2 +-
drivers/net/i40e/i40e_ethdev_vf.c | 11 +++++++----
drivers/net/i40e/i40e_fdir.c | 2 +-
drivers/net/i40e/i40e_rxtx.c | 9 ++++++---
lib/librte_ethdev/rte_ethdev.c | 10 ++++++++--
lib/librte_net/rte_ether.h | 1 +
6 files changed, 24 insertions(+), 11 deletions(-)
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 77a4683..b0e23c7 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -12105,7 +12105,7 @@ i40e_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
return -EBUSY;
}
- if (frame_size > RTE_ETHER_MAX_LEN)
+ if (frame_size > RTE_ETHER_MAX_LEN + I40E_VLAN_TAG_SIZE * 2)
dev_data->dev_conf.rxmode.offloads |=
DEV_RX_OFFLOAD_JUMBO_FRAME;
else
diff --git a/drivers/net/i40e/i40e_ethdev_vf.c
b/drivers/net/i40e/i40e_ethdev_vf.c
index 5dba092..1e0b50f 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -1772,7 +1772,8 @@ i40evf_rxq_init(struct rte_eth_dev *dev, struct
i40e_rx_queue *rxq)
* Check if the jumbo frame and maximum packet length are set correctly
*/
if (dev_data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
- if (rxq->max_pkt_len <= RTE_ETHER_MAX_LEN ||
+ if (rxq->max_pkt_len <= RTE_ETHER_MAX_LEN +
+ I40E_VLAN_TAG_SIZE * 2 ||
rxq->max_pkt_len > I40E_FRAME_SIZE_MAX) {
PMD_DRV_LOG(ERR, "maximum packet length must be "
"larger than %u and smaller than %u, as jumbo "
@@ -1782,12 +1783,14 @@ i40evf_rxq_init(struct rte_eth_dev *dev, struct
i40e_rx_queue *rxq)
}
} else {
if (rxq->max_pkt_len < RTE_ETHER_MIN_LEN ||
- rxq->max_pkt_len > RTE_ETHER_MAX_LEN) {
+ rxq->max_pkt_len > RTE_ETHER_MAX_LEN +
+ I40E_VLAN_TAG_SIZE * 2) {
PMD_DRV_LOG(ERR, "maximum packet length must be "
"larger than %u and smaller than %u, as jumbo "
"frame is disabled",
(uint32_t)RTE_ETHER_MIN_LEN,
- (uint32_t)RTE_ETHER_MAX_LEN);
+ (uint32_t)RTE_ETHER_MAX_LEN +
+ I40E_VLAN_TAG_SIZE * 2);
return I40E_ERR_CONFIG;
}
}
@@ -2747,7 +2750,7 @@ i40evf_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
return -EBUSY;
}
- if (frame_size > RTE_ETHER_MAX_LEN)
+ if (frame_size > RTE_ETHER_MAX_LEN + I40E_VLAN_TAG_SIZE * 2)
dev_data->dev_conf.rxmode.offloads |=
DEV_RX_OFFLOAD_JUMBO_FRAME;
else
diff --git a/drivers/net/i40e/i40e_fdir.c b/drivers/net/i40e/i40e_fdir.c
index dee007d..8b813cb 100644
--- a/drivers/net/i40e/i40e_fdir.c
+++ b/drivers/net/i40e/i40e_fdir.c
@@ -113,7 +113,7 @@ i40e_fdir_rx_queue_init(struct i40e_rx_queue *rxq)
#endif
rx_ctx.dtype = i40e_header_split_none;
rx_ctx.hsplit_0 = I40E_HEADER_SPLIT_NONE;
- rx_ctx.rxmax = RTE_ETHER_MAX_LEN;
+ rx_ctx.rxmax = RTE_ETHER_MAX_LEN + I40E_VLAN_TAG_SIZE * 2;
rx_ctx.tphrdesc_ena = 1;
rx_ctx.tphwdesc_ena = 1;
rx_ctx.tphdata_ena = 1;
diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 6a66cec..a93b11f 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -2617,7 +2617,8 @@ i40e_rx_queue_config(struct i40e_rx_queue *rxq)
RTE_MIN((uint32_t)(hw->func_caps.rx_buf_chain_len *
rxq->rx_buf_len), data->dev_conf.rxmode.max_rx_pkt_len);
if (data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
- if (rxq->max_pkt_len <= RTE_ETHER_MAX_LEN ||
+ if (rxq->max_pkt_len <= RTE_ETHER_MAX_LEN +
+ I40E_VLAN_TAG_SIZE * 2 ||
rxq->max_pkt_len > I40E_FRAME_SIZE_MAX) {
PMD_DRV_LOG(ERR, "maximum packet length must "
"be larger than %u and smaller than %u,"
@@ -2628,12 +2629,14 @@ i40e_rx_queue_config(struct i40e_rx_queue *rxq)
}
} else {
if (rxq->max_pkt_len < RTE_ETHER_MIN_LEN ||
- rxq->max_pkt_len > RTE_ETHER_MAX_LEN) {
+ rxq->max_pkt_len > RTE_ETHER_MAX_LEN +
+ I40E_VLAN_TAG_SIZE * 2) {
PMD_DRV_LOG(ERR, "maximum packet length must be "
"larger than %u and smaller than %u, "
"as jumbo frame is disabled",
(uint32_t)RTE_ETHER_MIN_LEN,
- (uint32_t)RTE_ETHER_MAX_LEN);
+ (uint32_t)RTE_ETHER_MAX_LEN +
+ I40E_VLAN_TAG_SIZE * 2);
return I40E_ERR_CONFIG;
}
}
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 7743205..f6722be 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -1257,11 +1257,17 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t
nb_rx_q, uint16_t nb_tx_q,
goto rollback;
}
} else {
+ /**
+ * The overhead from MTU to max frame size.
+ * Considering VLAN and QinQ packet, the VLAN tag size
+ * needs to be added to RTE_ETHER_MAX_LEN.
+ */
if (dev_conf->rxmode.max_rx_pkt_len < RTE_ETHER_MIN_LEN ||
- dev_conf->rxmode.max_rx_pkt_len > RTE_ETHER_MAX_LEN)
+ dev_conf->rxmode.max_rx_pkt_len > RTE_ETHER_MAX_LEN
+ + RTE_ETHER_VLAN_LEN * 2)
/* Use default value */
dev->data->dev_conf.rxmode.max_rx_pkt_len =
- RTE_ETHER_MAX_LEN;
+ RTE_ETHER_MAX_LEN + RTE_ETHER_VLAN_LEN * 2;
}
/* Any requested offloading must be within its device capabilities */
diff --git a/lib/librte_net/rte_ether.h b/lib/librte_net/rte_ether.h
index e069dc7..9c5eee7 100644
--- a/lib/librte_net/rte_ether.h
+++ b/lib/librte_net/rte_ether.h
@@ -26,6 +26,7 @@ extern "C" {
#define RTE_ETHER_ADDR_LEN 6 /**< Length of Ethernet address. */
#define RTE_ETHER_TYPE_LEN 2 /**< Length of Ethernet type field. */
#define RTE_ETHER_CRC_LEN 4 /**< Length of Ethernet CRC. */
+#define RTE_ETHER_VLAN_LEN 4 /**< Length of Ethernet VLAN tag. */
#define RTE_ETHER_HDR_LEN \
(RTE_ETHER_ADDR_LEN * 2 + \
RTE_ETHER_TYPE_LEN) /**< Length of Ethernet header. */
--
2.7.4
