Author: jhb
Date: Thu Jul 25 16:34:34 2013
New Revision: 253653
URL: http://svnweb.freebsd.org/changeset/base/253653
Log:
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 <me...@mellanox.com>
MFC after: 1 week
Modified:
head/sys/ofed/drivers/net/mlx4/en_tx.c
Modified: head/sys/ofed/drivers/net/mlx4/en_tx.c
==============================================================================
--- head/sys/ofed/drivers/net/mlx4/en_tx.c Thu Jul 25 16:04:55 2013
(r253652)
+++ head/sys/ofed/drivers/net/mlx4/en_tx.c Thu Jul 25 16:34:34 2013
(r253653)
@@ -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++;
}
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