linux/drivers/infiniband/hw/mlx5
Sagi Grimberg 986ef95ecd IB/mlx5: Expose correct max_sge_rd limit
mlx5 devices (Connect-IB, ConnectX-4, ConnectX-4-LX) has a limitation
where rdma read work queue entries cannot exceed 512 bytes.
A rdma_read wqe needs to fit in 512 bytes:
- wqe control segment (16 bytes)
- rdma segment (16 bytes)
- scatter elements (16 bytes each)

So max_sge_rd should be: (512 - 16 - 16) / 16 = 30.

Cc: linux-stable@vger.kernel.org
Reported-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagig@grimberg.me>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-04-28 10:49:17 -04:00
..
ah.c IB/mlx5: Add RoCE fields to Address Vector 2015-12-23 12:07:37 -05:00
cq.c net/mlx5: Refactor mlx5_core_mr to mkey 2016-03-01 11:18:37 -05:00
doorbell.c IB/mlx5: Fix Mellanox copyright note 2015-04-02 16:33:42 -04:00
gsi.c IB/mlx5: Eliminate GSI RX QP's send buffers 2016-03-01 11:04:07 -05:00
ib_virt.c IB/mlx5: Implement callbacks for manipulating VFs 2016-03-21 17:13:14 -04:00
Kconfig net/mlx5: Extend mlx5_core to support ConnectX-4 Ethernet functionality 2015-05-30 18:24:51 -07:00
mad.c net/mlx5_core: Add VF param when querying vport counter 2016-03-21 17:13:14 -04:00
main.c IB/mlx5: Expose correct max_sge_rd limit 2016-04-28 10:49:17 -04:00
Makefile IB/mlx5: Implement callbacks for manipulating VFs 2016-03-21 17:13:14 -04:00
mem.c IB/mlx5: Fix Mellanox copyright note 2015-04-02 16:33:42 -04:00
mlx5_ib.h IB/mlx5: fix VFs callback function prototypes 2016-04-06 10:37:07 -04:00
mr.c mlx5: Add arbitrary sg list support 2016-03-04 11:59:35 -05:00
odp.c net/mlx5: Refactor mlx5_core_mr to mkey 2016-03-01 11:18:37 -05:00
qp.c mlx5: Add arbitrary sg list support 2016-03-04 11:59:35 -05:00
srq.c IB/{core, mlx5}: Fix input len in vendor part of create_qp/srq 2016-03-03 10:00:18 -05:00
user.h IB/mlx5: Add memory windows allocation support 2016-03-01 11:18:54 -05:00