Date: Tue, 15 Aug 2017 12:30:11 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r322537 - stable/11/sys/dev/mlx5/mlx5_en Message-ID: <201708151230.v7FCUBRr035391@repo.freebsd.org>
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Author: hselasky Date: Tue Aug 15 12:30:11 2017 New Revision: 322537 URL: https://svnweb.freebsd.org/changeset/base/322537 Log: MFC r322251: Make sure the received IP header gets 32-bit aligned for short packets in the mlx5en(4) driver. Sponsored by: Mellanox Technologies Modified: stable/11/sys/dev/mlx5/mlx5_en/mlx5_en_rx.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/dev/mlx5/mlx5_en/mlx5_en_rx.c ============================================================================== --- stable/11/sys/dev/mlx5/mlx5_en/mlx5_en_rx.c Tue Aug 15 12:28:16 2017 (r322536) +++ stable/11/sys/dev/mlx5/mlx5_en/mlx5_en_rx.c Tue Aug 15 12:30:11 2017 (r322537) @@ -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 {
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