diff options
author | Chuck Lever <chuck.lever@oracle.com> | 2015-03-30 14:34:58 -0400 |
---|---|---|
committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2015-03-31 09:52:52 -0400 |
commit | 91e70e70e47b3355bb0a8b3b196c93897dcdb440 (patch) | |
tree | 64cc0c734337a26487fb1960bd9e950a1d8afc19 /net | |
parent | 6814baead86b5d44096ddfbb6f944163578e68c3 (diff) | |
download | linux-stable-91e70e70e47b3355bb0a8b3b196c93897dcdb440.tar.gz linux-stable-91e70e70e47b3355bb0a8b3b196c93897dcdb440.tar.bz2 linux-stable-91e70e70e47b3355bb0a8b3b196c93897dcdb440.zip |
xprtrdma: Add "init MRs" memreg op
This method is used when setting up a new transport instance to
create a pool of Memory Region objects that will be used to register
memory during operation.
Memory Regions are not needed for "physical" registration, since
->prepare and ->release are no-ops for that mode.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Tested-by: Devesh Sharma <Devesh.Sharma@Emulex.Com>
Tested-by: Meghana Cheripady <Meghana.Cheripady@Emulex.Com>
Tested-by: Veeresh U. Kokatnur <veereshuk@chelsio.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net')
-rw-r--r-- | net/sunrpc/xprtrdma/fmr_ops.c | 42 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/frwr_ops.c | 66 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/physical_ops.c | 7 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/verbs.c | 104 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/xprt_rdma.h | 1 |
5 files changed, 119 insertions, 101 deletions
diff --git a/net/sunrpc/xprtrdma/fmr_ops.c b/net/sunrpc/xprtrdma/fmr_ops.c index 888aa107cf0b..825ce9641350 100644 --- a/net/sunrpc/xprtrdma/fmr_ops.c +++ b/net/sunrpc/xprtrdma/fmr_ops.c @@ -29,6 +29,47 @@ fmr_op_maxpages(struct rpcrdma_xprt *r_xprt) rpcrdma_max_segments(r_xprt) * RPCRDMA_MAX_FMR_SGES); } +static int +fmr_op_init(struct rpcrdma_xprt *r_xprt) +{ + struct rpcrdma_buffer *buf = &r_xprt->rx_buf; + int mr_access_flags = IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ; + struct ib_fmr_attr fmr_attr = { + .max_pages = RPCRDMA_MAX_FMR_SGES, + .max_maps = 1, + .page_shift = PAGE_SHIFT + }; + struct ib_pd *pd = r_xprt->rx_ia.ri_pd; + struct rpcrdma_mw *r; + int i, rc; + + INIT_LIST_HEAD(&buf->rb_mws); + INIT_LIST_HEAD(&buf->rb_all); + + i = (buf->rb_max_requests + 1) * RPCRDMA_MAX_SEGS; + dprintk("RPC: %s: initalizing %d FMRs\n", __func__, i); + + while (i--) { + r = kzalloc(sizeof(*r), GFP_KERNEL); + if (!r) + return -ENOMEM; + + r->r.fmr = ib_alloc_fmr(pd, mr_access_flags, &fmr_attr); + if (IS_ERR(r->r.fmr)) + goto out_fmr_err; + + list_add(&r->mw_list, &buf->rb_mws); + list_add(&r->mw_all, &buf->rb_all); + } + return 0; + +out_fmr_err: + rc = PTR_ERR(r->r.fmr); + dprintk("RPC: %s: ib_alloc_fmr status %i\n", __func__, rc); + kfree(r); + return rc; +} + /* Use the ib_map_phys_fmr() verb to register a memory region * for remote access via RDMA READ or RDMA WRITE. */ @@ -109,5 +150,6 @@ const struct rpcrdma_memreg_ops rpcrdma_fmr_memreg_ops = { .ro_map = fmr_op_map, .ro_unmap = fmr_op_unmap, .ro_maxpages = fmr_op_maxpages, + .ro_init = fmr_op_init, .ro_displayname = "fmr", }; diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c index 35b725bf0afb..9168c15faafa 100644 --- a/net/sunrpc/xprtrdma/frwr_ops.c +++ b/net/sunrpc/xprtrdma/frwr_ops.c @@ -17,6 +17,35 @@ # define RPCDBG_FACILITY RPCDBG_TRANS #endif +static int +__frwr_init(struct rpcrdma_mw *r, struct ib_pd *pd, struct ib_device *device, + unsigned int depth) +{ + struct rpcrdma_frmr *f = &r->r.frmr; + int rc; + + f->fr_mr = ib_alloc_fast_reg_mr(pd, 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)) + goto out_list_err; + return 0; + +out_mr_err: + rc = PTR_ERR(f->fr_mr); + dprintk("RPC: %s: ib_alloc_fast_reg_mr status %i\n", + __func__, rc); + 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); + ib_dereg_mr(f->fr_mr); + return rc; +} + /* FRWR mode conveys a list of pages per chunk segment. The * maximum length of that list is the FRWR page list depth. */ @@ -29,6 +58,42 @@ frwr_op_maxpages(struct rpcrdma_xprt *r_xprt) rpcrdma_max_segments(r_xprt) * ia->ri_max_frmr_depth); } +static int +frwr_op_init(struct rpcrdma_xprt *r_xprt) +{ + struct rpcrdma_buffer *buf = &r_xprt->rx_buf; + struct ib_device *device = r_xprt->rx_ia.ri_id->device; + unsigned int depth = r_xprt->rx_ia.ri_max_frmr_depth; + struct ib_pd *pd = r_xprt->rx_ia.ri_pd; + int i; + + INIT_LIST_HEAD(&buf->rb_mws); + INIT_LIST_HEAD(&buf->rb_all); + + i = (buf->rb_max_requests + 1) * RPCRDMA_MAX_SEGS; + dprintk("RPC: %s: initalizing %d FRMRs\n", __func__, i); + + while (i--) { + struct rpcrdma_mw *r; + int rc; + + r = kzalloc(sizeof(*r), GFP_KERNEL); + if (!r) + return -ENOMEM; + + rc = __frwr_init(r, pd, device, depth); + if (rc) { + kfree(r); + return rc; + } + + list_add(&r->mw_list, &buf->rb_mws); + list_add(&r->mw_all, &buf->rb_all); + } + + return 0; +} + /* Post a FAST_REG Work Request to register a memory region * for remote access via RDMA READ or RDMA WRITE. */ @@ -149,5 +214,6 @@ const struct rpcrdma_memreg_ops rpcrdma_frwr_memreg_ops = { .ro_map = frwr_op_map, .ro_unmap = frwr_op_unmap, .ro_maxpages = frwr_op_maxpages, + .ro_init = frwr_op_init, .ro_displayname = "frwr", }; diff --git a/net/sunrpc/xprtrdma/physical_ops.c b/net/sunrpc/xprtrdma/physical_ops.c index 5b5a63adfdf3..c37205190a2f 100644 --- a/net/sunrpc/xprtrdma/physical_ops.c +++ b/net/sunrpc/xprtrdma/physical_ops.c @@ -28,6 +28,12 @@ physical_op_maxpages(struct rpcrdma_xprt *r_xprt) rpcrdma_max_segments(r_xprt)); } +static int +physical_op_init(struct rpcrdma_xprt *r_xprt) +{ + return 0; +} + /* The client's physical memory is already exposed for * remote access via RDMA READ or RDMA WRITE. */ @@ -57,5 +63,6 @@ const struct rpcrdma_memreg_ops rpcrdma_physical_memreg_ops = { .ro_map = physical_op_map, .ro_unmap = physical_op_unmap, .ro_maxpages = physical_op_maxpages, + .ro_init = physical_op_init, .ro_displayname = "physical", }; diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index b167c99fbfb6..e89a57d4e4f2 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -1124,91 +1124,6 @@ out: return ERR_PTR(rc); } -static int -rpcrdma_init_fmrs(struct rpcrdma_ia *ia, struct rpcrdma_buffer *buf) -{ - int mr_access_flags = IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ; - struct ib_fmr_attr fmr_attr = { - .max_pages = RPCRDMA_MAX_DATA_SEGS, - .max_maps = 1, - .page_shift = PAGE_SHIFT - }; - struct rpcrdma_mw *r; - int i, rc; - - i = (buf->rb_max_requests + 1) * RPCRDMA_MAX_SEGS; - dprintk("RPC: %s: initalizing %d FMRs\n", __func__, i); - - while (i--) { - r = kzalloc(sizeof(*r), GFP_KERNEL); - if (r == NULL) - return -ENOMEM; - - r->r.fmr = ib_alloc_fmr(ia->ri_pd, mr_access_flags, &fmr_attr); - if (IS_ERR(r->r.fmr)) { - rc = PTR_ERR(r->r.fmr); - dprintk("RPC: %s: ib_alloc_fmr failed %i\n", - __func__, rc); - goto out_free; - } - - list_add(&r->mw_list, &buf->rb_mws); - list_add(&r->mw_all, &buf->rb_all); - } - return 0; - -out_free: - kfree(r); - return rc; -} - -static int -rpcrdma_init_frmrs(struct rpcrdma_ia *ia, struct rpcrdma_buffer *buf) -{ - struct rpcrdma_frmr *f; - struct rpcrdma_mw *r; - int i, rc; - - i = (buf->rb_max_requests + 1) * RPCRDMA_MAX_SEGS; - dprintk("RPC: %s: initalizing %d FRMRs\n", __func__, i); - - while (i--) { - r = kzalloc(sizeof(*r), GFP_KERNEL); - if (r == NULL) - return -ENOMEM; - f = &r->r.frmr; - - f->fr_mr = ib_alloc_fast_reg_mr(ia->ri_pd, - ia->ri_max_frmr_depth); - if (IS_ERR(f->fr_mr)) { - rc = PTR_ERR(f->fr_mr); - dprintk("RPC: %s: ib_alloc_fast_reg_mr " - "failed %i\n", __func__, rc); - goto out_free; - } - - f->fr_pgl = ib_alloc_fast_reg_page_list(ia->ri_id->device, - ia->ri_max_frmr_depth); - if (IS_ERR(f->fr_pgl)) { - rc = PTR_ERR(f->fr_pgl); - dprintk("RPC: %s: ib_alloc_fast_reg_page_list " - "failed %i\n", __func__, rc); - - ib_dereg_mr(f->fr_mr); - goto out_free; - } - - list_add(&r->mw_list, &buf->rb_mws); - list_add(&r->mw_all, &buf->rb_all); - } - - return 0; - -out_free: - kfree(r); - return rc; -} - int rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt) { @@ -1245,22 +1160,9 @@ rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt) buf->rb_recv_bufs = (struct rpcrdma_rep **) p; p = (char *) &buf->rb_recv_bufs[buf->rb_max_requests]; - INIT_LIST_HEAD(&buf->rb_mws); - INIT_LIST_HEAD(&buf->rb_all); - switch (ia->ri_memreg_strategy) { - case RPCRDMA_FRMR: - rc = rpcrdma_init_frmrs(ia, buf); - if (rc) - goto out; - break; - case RPCRDMA_MTHCAFMR: - rc = rpcrdma_init_fmrs(ia, buf); - if (rc) - goto out; - break; - default: - break; - } + rc = ia->ri_ops->ro_init(r_xprt); + if (rc) + goto out; for (i = 0; i < buf->rb_max_requests; i++) { struct rpcrdma_req *req; diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index 9a727f960df9..90b60feab45a 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -341,6 +341,7 @@ struct rpcrdma_memreg_ops { int (*ro_unmap)(struct rpcrdma_xprt *, struct rpcrdma_mr_seg *); size_t (*ro_maxpages)(struct rpcrdma_xprt *); + int (*ro_init)(struct rpcrdma_xprt *); const char *ro_displayname; }; |