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IB/mthca: Add IPoIB checksum offload support

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Arbel and Sinai devices support checksum generation and verification
of TCP and UDP packets for UD IPoIB messages.  This patch checks if
the HCA supports this and sets the IB_DEVICE_UD_IP_CSUM capability
flag if it does.  It implements support for handling the IB_SEND_IP_CSUM
send flag and setting the csum_ok field in receive work completions.

Signed-off-by: Eli Cohen <eli@mellnaox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Eli Cohen
2008-04-16 21:01:11 -07:00
committed by Roland Dreier
parent 8ff095ec4b
commit 680b575f6d
6 changed files with 29 additions and 12 deletions
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4
drivers/infiniband/hw/mthca/mthca_cmd.c
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@@ -1339,6 +1339,10 @@ int mthca_INIT_HCA(struct mthca_dev *dev,
/* Check port for UD address vector: */
*(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(1);
/* Enable IPoIB checksumming if we can: */
if (dev->device_cap_flags & IB_DEVICE_UD_IP_CSUM)
*(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(7 << 3);
/* We leave wqe_quota, responder_exu, etc as 0 (default) */
/* QPC/EEC/CQC/EQC/RDB attributes */