From ba90c51af36a4b5268b83dba840e8f69a8d14fce Mon Sep 17 00:00:00 2001 From: John Baldwin Date: Thu, 25 Jul 2013 16:34:34 +0000 Subject: [PATCH] Avoid trashing IP fragments: - Only enable UDP/TCP hardware checksums if CSUM_UDP or CSUM_TCP is set. - Only enable IP hardware checksums if CSUM_IP is set. PR: kern/180430 Submitted by: Meny Yossefi MFC after: 1 week --- sys/ofed/drivers/net/mlx4/en_tx.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/sys/ofed/drivers/net/mlx4/en_tx.c b/sys/ofed/drivers/net/mlx4/en_tx.c index d2852208550..9ad3c59b7d0 100644 --- a/sys/ofed/drivers/net/mlx4/en_tx.c +++ b/sys/ofed/drivers/net/mlx4/en_tx.c @@ -780,8 +780,12 @@ retry: tx_desc->ctrl.srcrb_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | MLX4_WQE_CTRL_SOLICITED); if (mb->m_pkthdr.csum_flags & (CSUM_IP|CSUM_TCP|CSUM_UDP)) { - tx_desc->ctrl.srcrb_flags |= cpu_to_be32(MLX4_WQE_CTRL_IP_CSUM | - MLX4_WQE_CTRL_TCP_UDP_CSUM); + if (mb->m_pkthdr.csum_flags & CSUM_IP) + tx_desc->ctrl.srcrb_flags |= + cpu_to_be32(MLX4_WQE_CTRL_IP_CSUM); + if (mb->m_pkthdr.csum_flags & (CSUM_TCP|CSUM_UDP)) + tx_desc->ctrl.srcrb_flags |= + cpu_to_be32(MLX4_WQE_CTRL_TCP_UDP_CSUM); priv->port_stats.tx_chksum_offload++; }