linux/drivers/infiniband/hw/mlx4
Steve Wise 33023fb85a IB/core: add max_send_sge and max_recv_sge attributes
This patch replaces the ib_device_attr.max_sge with max_send_sge and
max_recv_sge. It allows ulps to take advantage of devices that have very
different send and recv sge depths.  For example cxgb4 has a max_recv_sge
of 4, yet a max_send_sge of 16.  Splitting out these attributes allows
much more efficient use of the SQ for cxgb4 with ulps that use the RDMA_RW
API. Consider a large RDMA WRITE that has 16 scattergather entries.
With max_sge of 4, the ulp would send 4 WRITE WRs, but with max_sge of
16, it can be done with 1 WRITE WR.

Acked-by: Sagi Grimberg <sagi@grimberg.me>
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-18 13:17:28 -06:00
..
ah.c IB/mlx4: Use GID attribute from ah attribute 2018-06-18 11:11:27 -06:00
alias_GUID.c IB/mlx4: Fix some spelling mistakes 2017-08-24 16:27:10 -04:00
cm.c IB/mlx4: Fix CM REQ retries in paravirt mode 2017-07-20 11:20:50 -04:00
cq.c IB/mlx: Set slid to zero in Ethernet completion struct 2018-02-28 12:10:32 -07:00
doorbell.c IB: Refactor umem to use linear SG table 2014-03-04 10:34:28 -08:00
Kconfig net: mellanox: add DEVLINK dependencies 2016-03-03 17:08:59 -05:00
mad.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
main.c IB/core: add max_send_sge and max_recv_sge attributes 2018-06-18 13:17:28 -06:00
Makefile IB/mlx4: Add iov directory in sysfs under the ib device 2012-09-30 20:33:39 -07:00
mcg.c IB/mlx4: Suppress gcc 7 fall-through complaints 2017-10-14 20:47:06 -04:00
mlx4_ib.h IB/mlx4: Use GID attribute from ah attribute 2018-06-18 11:11:27 -06:00
mr.c IB/mlx4: Mark user MR as writable if actual virtual memory is writable 2018-05-28 11:41:39 -06:00
qp.c RDMA: Convert drivers to use the AH's sgid_attr in post_wr paths 2018-06-18 11:11:27 -06:00
srq.c IB/core: Separate CQ handle in SRQ context 2017-08-29 08:30:16 -04:00
sysfs.c IB/mlx4: fix sprintf format warning 2017-09-13 18:53:15 -07:00