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Commit 3f37cae6 authored by Rolf Manderscheid's avatar Rolf Manderscheid Committed by Roland Dreier
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IB/mthca: Set GRH:HopLimit when building MLX headers 



Global CM packets used by rmda_cm were being sent with a GRH:hopLimit
of zero, causing them to be dropped by the router.  The problem is a
missing initialization of the hop_limit field in mthca_read_ah(),
which was called by build_mlx_header() when sending a MAD on QP1.

Signed-off-by: default avatarRolf Manderscheid <rvm@obsidianresearch.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 1f8f7b7a

drivers/infiniband/hw/mthca/mthca_av.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -279,6 +279,7 @@ int mthca_read_ah(struct mthca_dev *dev, struct mthca_ah *ah, 
			(be32_to_cpu(ah->av->sl_tclass_flowlabel) >> 20) & 0xff;

			(be32_to_cpu(ah->av->sl_tclass_flowlabel) >> 20) & 0xff;

		header->grh.flow_label    =

		header->grh.flow_label    =

			ah->av->sl_tclass_flowlabel & cpu_to_be32(0xfffff);

			ah->av->sl_tclass_flowlabel & cpu_to_be32(0xfffff);

		header->grh.hop_limit     = ah->av->hop_limit;

		ib_get_cached_gid(&dev->ib_dev,

		ib_get_cached_gid(&dev->ib_dev,

				  be32_to_cpu(ah->av->port_pd) >> 24,

				  be32_to_cpu(ah->av->port_pd) >> 24,

				  ah->av->gid_index % dev->limits.gid_table_len,

				  ah->av->gid_index % dev->limits.gid_table_len,