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Make sure the received IP header gets 32-bit aligned for short packets

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in the mlx5en(4) driver.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2017-08-08 11:49:36 +00:00
parent 869dd4b498
commit 8508e4d730
1 changed files with 4 additions and 2 deletions
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6
sys/dev/mlx5/mlx5_en/mlx5_en_rx.c
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@ -355,9 +355,11 @@ mlx5e_poll_rx_cq(struct mlx5e_rq *rq, int budget)
rq->stats.wqe_err++;
goto wq_ll_pop;
}
if (MHLEN >= byte_cnt &&
if ((MHLEN - MLX5E_NET_IP_ALIGN) >= byte_cnt &&
(mb = m_gethdr(M_NOWAIT, MT_DATA)) != NULL) {
/* get IP header aligned */
mb->m_data += MLX5E_NET_IP_ALIGN;
bcopy(rq->mbuf[wqe_counter].data, mtod(mb, caddr_t),
byte_cnt);
} else {