linux_dsm_epyc7002/net/sunrpc/xprtrdma
Chuck Lever b78de1dca0 xprtrdma: Allocate and map transport header buffers at connect time
Currently the underlying RDMA device is chosen at transport set-up
time. But it will soon be at connect time instead.

The maximum size of a transport header is based on device
capabilities. Thus transport header buffers have to be allocated
_after_ the underlying device has been chosen (via address and route
resolution); ie, in the connect worker.

Thus, move the allocation of transport header buffers to the connect
worker, after the point at which the underlying RDMA device has been
chosen.

This also means the RDMA device is available to do a DMA mapping of
these buffers at connect time, instead of in the hot I/O path. Make
that optimization as well.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2020-01-15 10:54:32 -05:00
..
backchannel.c xprtrdma: Allocate and map transport header buffers at connect time 2020-01-15 10:54:32 -05:00
frwr_ops.c xprtrdma: Refactor frwr_is_supported 2020-01-15 10:54:32 -05:00
Makefile xprtrdma: Remove support for FMR memory registration 2019-01-02 12:05:17 -05:00
module.c NFS client updates for Linux 4.18 2018-06-12 10:09:03 -07:00
rpc_rdma.c xprtrdma: Allocate and map transport header buffers at connect time 2020-01-15 10:54:32 -05:00
svc_rdma_backchannel.c SUNRPC: Fix backchannel latency metrics 2019-11-21 17:05:14 -05:00
svc_rdma_recvfrom.c svcrdma: Use llist for managing cache of recv_ctxts 2019-08-19 10:59:28 -04:00
svc_rdma_rw.c scsi: lib/sg_pool.c: improve APIs for allocating sg pool 2019-06-20 15:21:33 -04:00
svc_rdma_sendto.c svcrdma: Improve DMA mapping trace points 2019-10-08 16:01:33 -04:00
svc_rdma_transport.c Highlights: 2019-09-27 17:00:27 -07:00
svc_rdma.c svcrdma: Remove svc_rdma_wq 2019-08-19 10:59:28 -04:00
transport.c xprtrdma: Eliminate per-transport "max pages" 2020-01-15 10:54:32 -05:00
verbs.c xprtrdma: Allocate and map transport header buffers at connect time 2020-01-15 10:54:32 -05:00
xprt_rdma.h xprtrdma: Allocate and map transport header buffers at connect time 2020-01-15 10:54:32 -05:00