github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-29 17:43:52 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

RDMA/rtrs: Add optional support for IB_MR_TYPE_SG_GAPS

Browse Source 
Support IB_MR_TYPE_SG_GAPS, which has less limitations
than standard IB_MR_TYPE_MEM_REG, a few ULP support this.

Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Signed-off-by: Kim Zhu <zhu.yanjun@ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Grzegorz Prajsner <grzegorz.prajsner@ionos.com>
Link: https://patch.msgid.link/20260107161517.56357-4-haris.iqbal@ionos.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Md Haris Iqbal 2026-01-07 17:15:10 +01:00 committed by Leon Romanovsky
parent d6cc7b0d61
commit 9293e04278
2 changed files with 18 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/infiniband/ulp/rtrs/rtrs-clt.c
View File

@ -1359,7 +1359,9 @@ static void free_path_reqs(struct rtrs_clt_path *clt_path)
static int alloc_path_reqs(struct rtrs_clt_path *clt_path)
{
struct ib_device *ib_dev = clt_path->s.dev->ib_dev;
struct rtrs_clt_io_req *req;
enum ib_mr_type mr_type;
int i, err = -ENOMEM;
clt_path->reqs = kcalloc(clt_path->queue_depth,
@ -1368,6 +1370,11 @@ static int alloc_path_reqs(struct rtrs_clt_path *clt_path)
if (!clt_path->reqs)
return -ENOMEM;
if (ib_dev->attrs.kernel_cap_flags & IBK_SG_GAPS_REG)
mr_type = IB_MR_TYPE_SG_GAPS;
else
mr_type = IB_MR_TYPE_MEM_REG;
for (i = 0; i < clt_path->queue_depth; ++i) {
req = &clt_path->reqs[i];
req->iu = rtrs_iu_alloc(1, clt_path->max_hdr_size, GFP_KERNEL,
@ -1381,8 +1388,7 @@ static int alloc_path_reqs(struct rtrs_clt_path *clt_path)
if (!req->sge)
goto out;
req->mr = ib_alloc_mr(clt_path->s.dev->ib_pd,
IB_MR_TYPE_MEM_REG,
req->mr = ib_alloc_mr(clt_path->s.dev->ib_pd, mr_type,
clt_path->max_pages_per_mr);
if (IS_ERR(req->mr)) {
err = PTR_ERR(req->mr);

13
drivers/infiniband/ulp/rtrs/rtrs-srv.c
View File

@ -562,13 +562,15 @@ static void unmap_cont_bufs(struct rtrs_srv_path *srv_path)
static int map_cont_bufs(struct rtrs_srv_path *srv_path)
{
struct ib_device *ib_dev = srv_path->s.dev->ib_dev;
struct rtrs_srv_sess *srv = srv_path->srv;
struct rtrs_path *ss = &srv_path->s;
int i, err, mrs_num;
unsigned int chunk_bits;
enum ib_mr_type mr_type;
int chunks_per_mr = 1;
struct ib_mr *mr;
struct sg_table *sgt;
struct ib_mr *mr;
/*
* Here we map queue_depth chunks to MR. Firstly we have to
@ -617,8 +619,13 @@ static int map_cont_bufs(struct rtrs_srv_path *srv_path)
err = -EINVAL;
goto free_sg;
}
mr = ib_alloc_mr(srv_path->s.dev->ib_pd, IB_MR_TYPE_MEM_REG,
nr_sgt);
if (ib_dev->attrs.kernel_cap_flags & IBK_SG_GAPS_REG)
mr_type = IB_MR_TYPE_SG_GAPS;
else
mr_type = IB_MR_TYPE_MEM_REG;
mr = ib_alloc_mr(srv_path->s.dev->ib_pd, mr_type, nr_sgt);
if (IS_ERR(mr)) {
err = PTR_ERR(mr);
goto unmap_sg;