mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 10:04:12 +08:00
xprtrdma: Port to new memory registration API
Instead of maintaining a fastreg page list, keep an sg table and convert an array of pages to a sg list. Then call ib_map_mr_sg and construct ib_reg_wr. Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Acked-by: Christoph Hellwig <hch@lst.de> Tested-by: Steve Wise <swise@opengridcomputing.com> Tested-by: Selvin Xavier <selvin.xavier@avagotech.com> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg
Doug Ledford
parent
16c2d702f2
commit
4143f34e01
@ -151,9 +151,13 @@ __frwr_init(struct rpcrdma_mw *r, struct ib_pd *pd, struct ib_device *device,
|
||||
f->fr_mr = ib_alloc_mr(pd, IB_MR_TYPE_MEM_REG, depth);
|
||||
if (IS_ERR(f->fr_mr))
|
||||
goto out_mr_err;
|
||||
f->fr_pgl = ib_alloc_fast_reg_page_list(device, depth);
|
||||
if (IS_ERR(f->fr_pgl))
|
||||
|
||||
f->sg = kcalloc(depth, sizeof(*f->sg), GFP_KERNEL);
|
||||
if (!f->sg)
|
||||
goto out_list_err;
|
||||
|
||||
sg_init_table(f->sg, depth);
|
||||
|
||||
return 0;
|
||||
|
||||
out_mr_err:
|
||||
@ -163,9 +167,9 @@ out_mr_err:
|
||||
return rc;
|
||||
|
||||
out_list_err:
|
||||
rc = PTR_ERR(f->fr_pgl);
|
||||
dprintk("RPC: %s: ib_alloc_fast_reg_page_list status %i\n",
|
||||
__func__, rc);
|
||||
rc = -ENOMEM;
|
||||
dprintk("RPC: %s: sg allocation failure\n",
|
||||
__func__);
|
||||
ib_dereg_mr(f->fr_mr);
|
||||
return rc;
|
||||
}
|
||||
@ -179,7 +183,7 @@ __frwr_release(struct rpcrdma_mw *r)
|
||||
if (rc)
|
||||
dprintk("RPC: %s: ib_dereg_mr status %i\n",
|
||||
__func__, rc);
|
||||
ib_free_fast_reg_page_list(r->r.frmr.fr_pgl);
|
||||
kfree(r->r.frmr.sg);
|
||||
}
|
||||
|
||||
static int
|
||||
@ -312,14 +316,10 @@ frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
|
||||
struct rpcrdma_mw *mw;
|
||||
struct rpcrdma_frmr *frmr;
|
||||
struct ib_mr *mr;
|
||||
struct ib_fast_reg_wr fastreg_wr;
|
||||
struct ib_reg_wr reg_wr;
|
||||
struct ib_send_wr *bad_wr;
|
||||
int rc, i, n, dma_nents;
|
||||
u8 key;
|
||||
int len, pageoff;
|
||||
int i, rc;
|
||||
int seg_len;
|
||||
u64 pa;
|
||||
int page_no;
|
||||
|
||||
mw = seg1->rl_mw;
|
||||
seg1->rl_mw = NULL;
|
||||
@ -332,64 +332,80 @@ frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
|
||||
} while (mw->r.frmr.fr_state != FRMR_IS_INVALID);
|
||||
frmr = &mw->r.frmr;
|
||||
frmr->fr_state = FRMR_IS_VALID;
|
||||
mr = frmr->fr_mr;
|
||||
|
||||
pageoff = offset_in_page(seg1->mr_offset);
|
||||
seg1->mr_offset -= pageoff; /* start of page */
|
||||
seg1->mr_len += pageoff;
|
||||
len = -pageoff;
|
||||
if (nsegs > ia->ri_max_frmr_depth)
|
||||
nsegs = ia->ri_max_frmr_depth;
|
||||
|
||||
for (page_no = i = 0; i < nsegs;) {
|
||||
rpcrdma_map_one(device, seg, direction);
|
||||
pa = seg->mr_dma;
|
||||
for (seg_len = seg->mr_len; seg_len > 0; seg_len -= PAGE_SIZE) {
|
||||
frmr->fr_pgl->page_list[page_no++] = pa;
|
||||
pa += PAGE_SIZE;
|
||||
}
|
||||
len += seg->mr_len;
|
||||
for (i = 0; i < nsegs;) {
|
||||
if (seg->mr_page)
|
||||
sg_set_page(&frmr->sg[i],
|
||||
seg->mr_page,
|
||||
seg->mr_len,
|
||||
offset_in_page(seg->mr_offset));
|
||||
else
|
||||
sg_set_buf(&frmr->sg[i], seg->mr_offset,
|
||||
seg->mr_len);
|
||||
|
||||
++seg;
|
||||
++i;
|
||||
|
||||
/* Check for holes */
|
||||
if ((i < nsegs && offset_in_page(seg->mr_offset)) ||
|
||||
offset_in_page((seg-1)->mr_offset + (seg-1)->mr_len))
|
||||
break;
|
||||
}
|
||||
dprintk("RPC: %s: Using frmr %p to map %d segments (%d bytes)\n",
|
||||
__func__, mw, i, len);
|
||||
frmr->sg_nents = i;
|
||||
|
||||
dma_nents = ib_dma_map_sg(device, frmr->sg, frmr->sg_nents, direction);
|
||||
if (!dma_nents) {
|
||||
pr_err("RPC: %s: failed to dma map sg %p sg_nents %u\n",
|
||||
__func__, frmr->sg, frmr->sg_nents);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
n = ib_map_mr_sg(mr, frmr->sg, frmr->sg_nents, PAGE_SIZE);
|
||||
if (unlikely(n != frmr->sg_nents)) {
|
||||
pr_err("RPC: %s: failed to map mr %p (%u/%u)\n",
|
||||
__func__, frmr->fr_mr, n, frmr->sg_nents);
|
||||
rc = n < 0 ? n : -EINVAL;
|
||||
goto out_senderr;
|
||||
}
|
||||
|
||||
dprintk("RPC: %s: Using frmr %p to map %u segments (%u bytes)\n",
|
||||
__func__, mw, frmr->sg_nents, mr->length);
|
||||
|
||||
memset(&fastreg_wr, 0, sizeof(fastreg_wr));
|
||||
fastreg_wr.wr.wr_id = (unsigned long)(void *)mw;
|
||||
fastreg_wr.wr.opcode = IB_WR_FAST_REG_MR;
|
||||
fastreg_wr.iova_start = seg1->mr_dma + pageoff;
|
||||
fastreg_wr.page_list = frmr->fr_pgl;
|
||||
fastreg_wr.page_shift = PAGE_SHIFT;
|
||||
fastreg_wr.page_list_len = page_no;
|
||||
fastreg_wr.length = len;
|
||||
fastreg_wr.access_flags = writing ?
|
||||
IB_ACCESS_REMOTE_WRITE | IB_ACCESS_LOCAL_WRITE :
|
||||
IB_ACCESS_REMOTE_READ;
|
||||
mr = frmr->fr_mr;
|
||||
key = (u8)(mr->rkey & 0x000000FF);
|
||||
ib_update_fast_reg_key(mr, ++key);
|
||||
fastreg_wr.rkey = mr->rkey;
|
||||
|
||||
reg_wr.wr.next = NULL;
|
||||
reg_wr.wr.opcode = IB_WR_REG_MR;
|
||||
reg_wr.wr.wr_id = (uintptr_t)mw;
|
||||
reg_wr.wr.num_sge = 0;
|
||||
reg_wr.wr.send_flags = 0;
|
||||
reg_wr.mr = mr;
|
||||
reg_wr.key = mr->rkey;
|
||||
reg_wr.access = writing ?
|
||||
IB_ACCESS_REMOTE_WRITE | IB_ACCESS_LOCAL_WRITE :
|
||||
IB_ACCESS_REMOTE_READ;
|
||||
|
||||
DECR_CQCOUNT(&r_xprt->rx_ep);
|
||||
rc = ib_post_send(ia->ri_id->qp, &fastreg_wr.wr, &bad_wr);
|
||||
rc = ib_post_send(ia->ri_id->qp, ®_wr.wr, &bad_wr);
|
||||
if (rc)
|
||||
goto out_senderr;
|
||||
|
||||
seg1->mr_dir = direction;
|
||||
seg1->rl_mw = mw;
|
||||
seg1->mr_rkey = mr->rkey;
|
||||
seg1->mr_base = seg1->mr_dma + pageoff;
|
||||
seg1->mr_nsegs = i;
|
||||
seg1->mr_len = len;
|
||||
return i;
|
||||
seg1->mr_base = mr->iova;
|
||||
seg1->mr_nsegs = frmr->sg_nents;
|
||||
seg1->mr_len = mr->length;
|
||||
|
||||
return frmr->sg_nents;
|
||||
|
||||
out_senderr:
|
||||
dprintk("RPC: %s: ib_post_send status %i\n", __func__, rc);
|
||||
while (i--)
|
||||
rpcrdma_unmap_one(device, --seg);
|
||||
ib_dma_unmap_sg(device, frmr->sg, dma_nents, direction);
|
||||
__frwr_queue_recovery(mw);
|
||||
return rc;
|
||||
}
|
||||
@ -403,22 +419,22 @@ frwr_op_unmap(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg)
|
||||
struct rpcrdma_mr_seg *seg1 = seg;
|
||||
struct rpcrdma_ia *ia = &r_xprt->rx_ia;
|
||||
struct rpcrdma_mw *mw = seg1->rl_mw;
|
||||
struct rpcrdma_frmr *frmr = &mw->r.frmr;
|
||||
struct ib_send_wr invalidate_wr, *bad_wr;
|
||||
int rc, nsegs = seg->mr_nsegs;
|
||||
|
||||
dprintk("RPC: %s: FRMR %p\n", __func__, mw);
|
||||
|
||||
seg1->rl_mw = NULL;
|
||||
mw->r.frmr.fr_state = FRMR_IS_INVALID;
|
||||
frmr->fr_state = FRMR_IS_INVALID;
|
||||
|
||||
memset(&invalidate_wr, 0, sizeof(invalidate_wr));
|
||||
invalidate_wr.wr_id = (unsigned long)(void *)mw;
|
||||
invalidate_wr.opcode = IB_WR_LOCAL_INV;
|
||||
invalidate_wr.ex.invalidate_rkey = mw->r.frmr.fr_mr->rkey;
|
||||
invalidate_wr.ex.invalidate_rkey = frmr->fr_mr->rkey;
|
||||
DECR_CQCOUNT(&r_xprt->rx_ep);
|
||||
|
||||
while (seg1->mr_nsegs--)
|
||||
rpcrdma_unmap_one(ia->ri_device, seg++);
|
||||
ib_dma_unmap_sg(ia->ri_device, frmr->sg, frmr->sg_nents, seg1->mr_dir);
|
||||
read_lock(&ia->ri_qplock);
|
||||
rc = ib_post_send(ia->ri_id->qp, &invalidate_wr, &bad_wr);
|
||||
read_unlock(&ia->ri_qplock);
|
||||
|
||||
@ -193,7 +193,8 @@ enum rpcrdma_frmr_state {
|
||||
};
|
||||
|
||||
struct rpcrdma_frmr {
|
||||
struct ib_fast_reg_page_list *fr_pgl;
|
||||
struct scatterlist *sg;
|
||||
int sg_nents;
|
||||
struct ib_mr *fr_mr;
|
||||
enum rpcrdma_frmr_state fr_state;
|
||||
struct work_struct fr_work;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user