>
> Some illegal packets will lead to TX hang. This patch checks those
> illegal packets and protects TX from hanging.
>
> Fixes: 7829b8d52be0 ("net/ixgbe: add Tx preparation")
> Cc: sta...@dpdk.org
>
> Signed-off-by: Xiao Zhang <xiao.zh...@intel.com>
> ---
> v2 change the minimum packet length according to the datasheet.
> ---
> drivers/net/ixgbe/ixgbe_rxtx.c | 6 ++++++
> drivers/net/ixgbe/ixgbe_rxtx.h | 2 ++
> 2 files changed, 8 insertions(+)
>
> diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
> index 7b398f1..f839bca 100644
> --- a/drivers/net/ixgbe/ixgbe_rxtx.c
> +++ b/drivers/net/ixgbe/ixgbe_rxtx.c
> @@ -986,6 +986,12 @@ ixgbe_prep_pkts(void *tx_queue, struct rte_mbuf
> **tx_pkts, uint16_t nb_pkts)
> return i;
> }
>
> + /* check the size of packet */
> + if (m->pkt_len < IXGBE_TX_MIN_PKT_LEN) {
> + rte_errno = EINVAL;
> + return i;
> + }
> +
> #ifdef RTE_LIBRTE_ETHDEV_DEBUG
> ret = rte_validate_tx_offload(m);
> if (ret != 0) {
> diff --git a/drivers/net/ixgbe/ixgbe_rxtx.h b/drivers/net/ixgbe/ixgbe_rxtx.h
> index 000c5b1..20a8b29 100644
> --- a/drivers/net/ixgbe/ixgbe_rxtx.h
> +++ b/drivers/net/ixgbe/ixgbe_rxtx.h
> @@ -53,6 +53,8 @@
>
> #define IXGBE_TX_MAX_SEG 40
>
> +#define IXGBE_TX_MIN_PKT_LEN 14
> +
> #define IXGBE_PACKET_TYPE_MASK_82599 0X7F
> #define IXGBE_PACKET_TYPE_MASK_X550 0X10FF
> #define IXGBE_PACKET_TYPE_MASK_TUNNEL 0XFF
> --
Acked-by: Konstantin Ananyev <konstantin.anan...@intel.com>
> 2.7.4
