mirror_ubuntu-kernels/drivers/infiniband/hw/mlx4
Håkon Bugge 0ae207fb91 IB/mlx4: Separate tunnel and wire bufs parameters
Using CX-3 in virtualized mode, MAD packets are proxied through the PF
driver. The feed is N tunnel QPs, and what is received from the VFs is
multiplexed out on the wire QP. Since this is a many-to-one scenario, it
is better to have separate initialization parameters for the two usages.

The number of wire and tunnel bufs are yanked up to 2K and 512
respectively. With this set of parameters, a system consisting of eight
physical servers, each with eight VMs and 14 I/O servers (BM), can run
switch fail-over without seeing:

mlx4_ib_demux_mad: failed sending GSI to slave 3 via tunnel qp (-11)

or

mlx4_ib_multiplex_mad: failed sending GSI to wire on behalf of slave 2 (-11)

Fixes: 3cf69cc8db ("IB/mlx4: Add CM paravirtualization")
Link: https://lore.kernel.org/r/20200803061941.1139994-4-haakon.bugge@oracle.com
Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-08-24 11:31:21 -03:00
..
ah.c RDMA: Group create AH arguments in struct 2020-05-02 20:19:53 -03:00
alias_GUID.c timekeeping: Use proper clock specifier names in functions 2019-06-22 12:11:27 +02:00
cm.c IB/mlx4: Add support for MRA 2020-08-24 11:31:21 -03:00
cq.c Use ODP MRs for kernel ULPs 2020-01-21 09:55:04 -04:00
doorbell.c IB: Allow calls to ib_umem_get from kernel ULPs 2020-01-16 16:14:28 +02:00
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
mad.c IB/mlx4: Separate tunnel and wire bufs parameters 2020-08-24 11:31:21 -03:00
main.c RDMA: Remove constant domain argument from flow creation call 2020-08-18 14:47:34 -03:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mcg.c IB/mlx4: Remove unnecessary parentheses 2018-09-21 12:00:50 -04:00
mlx4_ib.h IB/mlx4: Separate tunnel and wire bufs parameters 2020-08-24 11:31:21 -03:00
mr.c IB/uverbs: Set IOVA on IB MR in uverbs layer 2020-07-06 19:50:33 -03:00
qp.c treewide: Remove uninitialized_var() usage 2020-07-16 12:35:15 -07:00
srq.c IB: Allow calls to ib_umem_get from kernel ULPs 2020-01-16 16:14:28 +02:00
sysfs.c mlx4: Use snprintf instead of complicated strcpy 2018-12-06 20:23:06 -07:00