From 96ceddea3710f61bb5a5f2af25e684b7e1466171 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Thu, 14 Dec 2017 20:57:55 -0500 Subject: [PATCH] xprtrdma: Remove usage of "mw" Clean up: struct rpcrdma_mw was named after Memory Windows, but xprtrdma no longer supports a Memory Window registration mode. Rename rpcrdma_mw and its fields to reduce confusion and make the code more sensible to read. Renaming "mw" was suggested by Tom Talpey, the author of the original xprtrdma implementation. It's a good idea, but I haven't done this until now because it's a huge diffstat for no benefit other than code readability. However, I'm about to introduce static trace points that expose a few of xprtrdma's internal data structures. They should make sense in the trace report, and it's reasonable to treat trace points as a kernel API contract which might be difficult to change later. While I'm churning things up, two additional changes: - rename variables unhelpfully called "r" to "mr", to improve code clarity, and - rename the MR-related helper functions using the form "rpcrdma_mr_", to be consistent with other areas of the code. Signed-off-by: Chuck Lever Signed-off-by: Anna Schumaker --- net/sunrpc/xprtrdma/fmr_ops.c | 148 +++++++++++++------------- net/sunrpc/xprtrdma/frwr_ops.c | 177 ++++++++++++++++---------------- net/sunrpc/xprtrdma/rpc_rdma.c | 64 ++++++------ net/sunrpc/xprtrdma/verbs.c | 119 +++++++++++---------- net/sunrpc/xprtrdma/xprt_rdma.h | 62 +++++------ 5 files changed, 292 insertions(+), 278 deletions(-) diff --git a/net/sunrpc/xprtrdma/fmr_ops.c b/net/sunrpc/xprtrdma/fmr_ops.c index 29fc84c7ff98..8bd0399b3a1c 100644 --- a/net/sunrpc/xprtrdma/fmr_ops.c +++ b/net/sunrpc/xprtrdma/fmr_ops.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* - * Copyright (c) 2015 Oracle. All rights reserved. + * Copyright (c) 2015, 2017 Oracle. All rights reserved. * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved. */ @@ -47,7 +47,7 @@ fmr_is_supported(struct rpcrdma_ia *ia) } static int -fmr_op_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mw *mw) +fmr_op_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr) { static struct ib_fmr_attr fmr_attr = { .max_pages = RPCRDMA_MAX_FMR_SGES, @@ -55,106 +55,106 @@ fmr_op_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mw *mw) .page_shift = PAGE_SHIFT }; - mw->fmr.fm_physaddrs = kcalloc(RPCRDMA_MAX_FMR_SGES, + mr->fmr.fm_physaddrs = kcalloc(RPCRDMA_MAX_FMR_SGES, sizeof(u64), GFP_KERNEL); - if (!mw->fmr.fm_physaddrs) + if (!mr->fmr.fm_physaddrs) goto out_free; - mw->mw_sg = kcalloc(RPCRDMA_MAX_FMR_SGES, - sizeof(*mw->mw_sg), GFP_KERNEL); - if (!mw->mw_sg) + mr->mr_sg = kcalloc(RPCRDMA_MAX_FMR_SGES, + sizeof(*mr->mr_sg), GFP_KERNEL); + if (!mr->mr_sg) goto out_free; - sg_init_table(mw->mw_sg, RPCRDMA_MAX_FMR_SGES); + sg_init_table(mr->mr_sg, RPCRDMA_MAX_FMR_SGES); - mw->fmr.fm_mr = ib_alloc_fmr(ia->ri_pd, RPCRDMA_FMR_ACCESS_FLAGS, + mr->fmr.fm_mr = ib_alloc_fmr(ia->ri_pd, RPCRDMA_FMR_ACCESS_FLAGS, &fmr_attr); - if (IS_ERR(mw->fmr.fm_mr)) + if (IS_ERR(mr->fmr.fm_mr)) goto out_fmr_err; return 0; out_fmr_err: dprintk("RPC: %s: ib_alloc_fmr returned %ld\n", __func__, - PTR_ERR(mw->fmr.fm_mr)); + PTR_ERR(mr->fmr.fm_mr)); out_free: - kfree(mw->mw_sg); - kfree(mw->fmr.fm_physaddrs); + kfree(mr->mr_sg); + kfree(mr->fmr.fm_physaddrs); return -ENOMEM; } static int -__fmr_unmap(struct rpcrdma_mw *mw) +__fmr_unmap(struct rpcrdma_mr *mr) { LIST_HEAD(l); int rc; - list_add(&mw->fmr.fm_mr->list, &l); + list_add(&mr->fmr.fm_mr->list, &l); rc = ib_unmap_fmr(&l); - list_del(&mw->fmr.fm_mr->list); + list_del(&mr->fmr.fm_mr->list); return rc; } static void -fmr_op_release_mr(struct rpcrdma_mw *r) +fmr_op_release_mr(struct rpcrdma_mr *mr) { LIST_HEAD(unmap_list); int rc; /* Ensure MW is not on any rl_registered list */ - if (!list_empty(&r->mw_list)) - list_del(&r->mw_list); + if (!list_empty(&mr->mr_list)) + list_del(&mr->mr_list); - kfree(r->fmr.fm_physaddrs); - kfree(r->mw_sg); + kfree(mr->fmr.fm_physaddrs); + kfree(mr->mr_sg); /* In case this one was left mapped, try to unmap it * to prevent dealloc_fmr from failing with EBUSY */ - rc = __fmr_unmap(r); + rc = __fmr_unmap(mr); if (rc) pr_err("rpcrdma: final ib_unmap_fmr for %p failed %i\n", - r, rc); + mr, rc); - rc = ib_dealloc_fmr(r->fmr.fm_mr); + rc = ib_dealloc_fmr(mr->fmr.fm_mr); if (rc) pr_err("rpcrdma: final ib_dealloc_fmr for %p returned %i\n", - r, rc); + mr, rc); - kfree(r); + kfree(mr); } /* Reset of a single FMR. */ static void -fmr_op_recover_mr(struct rpcrdma_mw *mw) +fmr_op_recover_mr(struct rpcrdma_mr *mr) { - struct rpcrdma_xprt *r_xprt = mw->mw_xprt; + struct rpcrdma_xprt *r_xprt = mr->mr_xprt; int rc; /* ORDER: invalidate first */ - rc = __fmr_unmap(mw); + rc = __fmr_unmap(mr); /* ORDER: then DMA unmap */ ib_dma_unmap_sg(r_xprt->rx_ia.ri_device, - mw->mw_sg, mw->mw_nents, mw->mw_dir); + mr->mr_sg, mr->mr_nents, mr->mr_dir); if (rc) goto out_release; - rpcrdma_put_mw(r_xprt, mw); + rpcrdma_mr_put(mr); r_xprt->rx_stats.mrs_recovered++; return; out_release: - pr_err("rpcrdma: FMR reset failed (%d), %p released\n", rc, mw); + pr_err("rpcrdma: FMR reset failed (%d), %p released\n", rc, mr); r_xprt->rx_stats.mrs_orphaned++; - spin_lock(&r_xprt->rx_buf.rb_mwlock); - list_del(&mw->mw_all); - spin_unlock(&r_xprt->rx_buf.rb_mwlock); + spin_lock(&r_xprt->rx_buf.rb_mrlock); + list_del(&mr->mr_all); + spin_unlock(&r_xprt->rx_buf.rb_mrlock); - fmr_op_release_mr(mw); + fmr_op_release_mr(mr); } static int @@ -180,15 +180,15 @@ fmr_op_maxpages(struct rpcrdma_xprt *r_xprt) */ static struct rpcrdma_mr_seg * fmr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg, - int nsegs, bool writing, struct rpcrdma_mw **out) + int nsegs, bool writing, struct rpcrdma_mr **out) { struct rpcrdma_mr_seg *seg1 = seg; int len, pageoff, i, rc; - struct rpcrdma_mw *mw; + struct rpcrdma_mr *mr; u64 *dma_pages; - mw = rpcrdma_get_mw(r_xprt); - if (!mw) + mr = rpcrdma_mr_get(r_xprt); + if (!mr) return ERR_PTR(-ENOBUFS); pageoff = offset_in_page(seg1->mr_offset); @@ -199,12 +199,12 @@ fmr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg, nsegs = RPCRDMA_MAX_FMR_SGES; for (i = 0; i < nsegs;) { if (seg->mr_page) - sg_set_page(&mw->mw_sg[i], + sg_set_page(&mr->mr_sg[i], seg->mr_page, seg->mr_len, offset_in_page(seg->mr_offset)); else - sg_set_buf(&mw->mw_sg[i], seg->mr_offset, + sg_set_buf(&mr->mr_sg[i], seg->mr_offset, seg->mr_len); len += seg->mr_len; ++seg; @@ -214,40 +214,40 @@ fmr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg, offset_in_page((seg-1)->mr_offset + (seg-1)->mr_len)) break; } - mw->mw_dir = rpcrdma_data_dir(writing); + mr->mr_dir = rpcrdma_data_dir(writing); - mw->mw_nents = ib_dma_map_sg(r_xprt->rx_ia.ri_device, - mw->mw_sg, i, mw->mw_dir); - if (!mw->mw_nents) + mr->mr_nents = ib_dma_map_sg(r_xprt->rx_ia.ri_device, + mr->mr_sg, i, mr->mr_dir); + if (!mr->mr_nents) goto out_dmamap_err; - for (i = 0, dma_pages = mw->fmr.fm_physaddrs; i < mw->mw_nents; i++) - dma_pages[i] = sg_dma_address(&mw->mw_sg[i]); - rc = ib_map_phys_fmr(mw->fmr.fm_mr, dma_pages, mw->mw_nents, + for (i = 0, dma_pages = mr->fmr.fm_physaddrs; i < mr->mr_nents; i++) + dma_pages[i] = sg_dma_address(&mr->mr_sg[i]); + rc = ib_map_phys_fmr(mr->fmr.fm_mr, dma_pages, mr->mr_nents, dma_pages[0]); if (rc) goto out_maperr; - mw->mw_handle = mw->fmr.fm_mr->rkey; - mw->mw_length = len; - mw->mw_offset = dma_pages[0] + pageoff; + mr->mr_handle = mr->fmr.fm_mr->rkey; + mr->mr_length = len; + mr->mr_offset = dma_pages[0] + pageoff; - *out = mw; + *out = mr; return seg; out_dmamap_err: pr_err("rpcrdma: failed to DMA map sg %p sg_nents %d\n", - mw->mw_sg, i); - rpcrdma_put_mw(r_xprt, mw); + mr->mr_sg, i); + rpcrdma_mr_put(mr); return ERR_PTR(-EIO); out_maperr: pr_err("rpcrdma: ib_map_phys_fmr %u@0x%llx+%i (%d) status %i\n", len, (unsigned long long)dma_pages[0], - pageoff, mw->mw_nents, rc); + pageoff, mr->mr_nents, rc); ib_dma_unmap_sg(r_xprt->rx_ia.ri_device, - mw->mw_sg, mw->mw_nents, mw->mw_dir); - rpcrdma_put_mw(r_xprt, mw); + mr->mr_sg, mr->mr_nents, mr->mr_dir); + rpcrdma_mr_put(mr); return ERR_PTR(-EIO); } @@ -256,13 +256,13 @@ out_maperr: * Sleeps until it is safe for the host CPU to access the * previously mapped memory regions. * - * Caller ensures that @mws is not empty before the call. This + * Caller ensures that @mrs is not empty before the call. This * function empties the list. */ static void -fmr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mws) +fmr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs) { - struct rpcrdma_mw *mw; + struct rpcrdma_mr *mr; LIST_HEAD(unmap_list); int rc; @@ -271,10 +271,10 @@ fmr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mws) * ib_unmap_fmr() is slow, so use a single call instead * of one call per mapped FMR. */ - list_for_each_entry(mw, mws, mw_list) { + list_for_each_entry(mr, mrs, mr_list) { dprintk("RPC: %s: unmapping fmr %p\n", - __func__, &mw->fmr); - list_add_tail(&mw->fmr.fm_mr->list, &unmap_list); + __func__, &mr->fmr); + list_add_tail(&mr->fmr.fm_mr->list, &unmap_list); } r_xprt->rx_stats.local_inv_needed++; rc = ib_unmap_fmr(&unmap_list); @@ -284,14 +284,14 @@ fmr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mws) /* ORDER: Now DMA unmap all of the req's MRs, and return * them to the free MW list. */ - while (!list_empty(mws)) { - mw = rpcrdma_pop_mw(mws); + while (!list_empty(mrs)) { + mr = rpcrdma_mr_pop(mrs); dprintk("RPC: %s: DMA unmapping fmr %p\n", - __func__, &mw->fmr); - list_del(&mw->fmr.fm_mr->list); + __func__, &mr->fmr); + list_del(&mr->fmr.fm_mr->list); ib_dma_unmap_sg(r_xprt->rx_ia.ri_device, - mw->mw_sg, mw->mw_nents, mw->mw_dir); - rpcrdma_put_mw(r_xprt, mw); + mr->mr_sg, mr->mr_nents, mr->mr_dir); + rpcrdma_mr_put(mr); } return; @@ -299,10 +299,10 @@ fmr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mws) out_reset: pr_err("rpcrdma: ib_unmap_fmr failed (%i)\n", rc); - while (!list_empty(mws)) { - mw = rpcrdma_pop_mw(mws); - list_del(&mw->fmr.fm_mr->list); - fmr_op_recover_mr(mw); + while (!list_empty(mrs)) { + mr = rpcrdma_mr_pop(mrs); + list_del(&mr->fmr.fm_mr->list); + fmr_op_recover_mr(mr); } } diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c index 185eb69e5fb5..8ba4b3388a98 100644 --- a/net/sunrpc/xprtrdma/frwr_ops.c +++ b/net/sunrpc/xprtrdma/frwr_ops.c @@ -17,7 +17,7 @@ * A Memory Region is prepared for RDMA READ or WRITE using a FAST_REG * Work Request (frwr_op_map). When the RDMA operation is finished, this * Memory Region is invalidated using a LOCAL_INV Work Request - * (frwr_op_unmap). + * (frwr_op_unmap_sync). * * Typically these Work Requests are not signaled, and neither are RDMA * SEND Work Requests (with the exception of signaling occasionally to @@ -26,7 +26,7 @@ * * As an optimization, frwr_op_unmap marks MRs INVALID before the * LOCAL_INV WR is posted. If posting succeeds, the MR is placed on - * rb_mws immediately so that no work (like managing a linked list + * rb_mrs immediately so that no work (like managing a linked list * under a spinlock) is needed in the completion upcall. * * But this means that frwr_op_map() can occasionally encounter an MR @@ -60,7 +60,7 @@ * When frwr_op_map encounters FLUSHED and VALID MRs, they are recovered * with ib_dereg_mr and then are re-initialized. Because MR recovery * allocates fresh resources, it is deferred to a workqueue, and the - * recovered MRs are placed back on the rb_mws list when recovery is + * recovered MRs are placed back on the rb_mrs list when recovery is * complete. frwr_op_map allocates another MR for the current RPC while * the broken MR is reset. * @@ -96,21 +96,21 @@ out_not_supported: } static int -frwr_op_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mw *r) +frwr_op_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr) { unsigned int depth = ia->ri_max_frwr_depth; - struct rpcrdma_frwr *frwr = &r->frwr; + struct rpcrdma_frwr *frwr = &mr->frwr; int rc; frwr->fr_mr = ib_alloc_mr(ia->ri_pd, ia->ri_mrtype, depth); if (IS_ERR(frwr->fr_mr)) goto out_mr_err; - r->mw_sg = kcalloc(depth, sizeof(*r->mw_sg), GFP_KERNEL); - if (!r->mw_sg) + mr->mr_sg = kcalloc(depth, sizeof(*mr->mr_sg), GFP_KERNEL); + if (!mr->mr_sg) goto out_list_err; - sg_init_table(r->mw_sg, depth); + sg_init_table(mr->mr_sg, depth); init_completion(&frwr->fr_linv_done); return 0; @@ -129,32 +129,32 @@ out_list_err: } static void -frwr_op_release_mr(struct rpcrdma_mw *r) +frwr_op_release_mr(struct rpcrdma_mr *mr) { int rc; - /* Ensure MW is not on any rl_registered list */ - if (!list_empty(&r->mw_list)) - list_del(&r->mw_list); + /* Ensure MR is not on any rl_registered list */ + if (!list_empty(&mr->mr_list)) + list_del(&mr->mr_list); - rc = ib_dereg_mr(r->frwr.fr_mr); + rc = ib_dereg_mr(mr->frwr.fr_mr); if (rc) pr_err("rpcrdma: final ib_dereg_mr for %p returned %i\n", - r, rc); - kfree(r->mw_sg); - kfree(r); + mr, rc); + kfree(mr->mr_sg); + kfree(mr); } static int -__frwr_reset_mr(struct rpcrdma_ia *ia, struct rpcrdma_mw *r) +__frwr_mr_reset(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr) { - struct rpcrdma_frwr *frwr = &r->frwr; + struct rpcrdma_frwr *frwr = &mr->frwr; int rc; rc = ib_dereg_mr(frwr->fr_mr); if (rc) { pr_warn("rpcrdma: ib_dereg_mr status %d, frwr %p orphaned\n", - rc, r); + rc, mr); return rc; } @@ -162,7 +162,7 @@ __frwr_reset_mr(struct rpcrdma_ia *ia, struct rpcrdma_mw *r) ia->ri_max_frwr_depth); if (IS_ERR(frwr->fr_mr)) { pr_warn("rpcrdma: ib_alloc_mr status %ld, frwr %p orphaned\n", - PTR_ERR(frwr->fr_mr), r); + PTR_ERR(frwr->fr_mr), mr); return PTR_ERR(frwr->fr_mr); } @@ -174,33 +174,33 @@ __frwr_reset_mr(struct rpcrdma_ia *ia, struct rpcrdma_mw *r) /* Reset of a single FRWR. Generate a fresh rkey by replacing the MR. */ static void -frwr_op_recover_mr(struct rpcrdma_mw *mw) +frwr_op_recover_mr(struct rpcrdma_mr *mr) { - enum rpcrdma_frwr_state state = mw->frwr.fr_state; - struct rpcrdma_xprt *r_xprt = mw->mw_xprt; + enum rpcrdma_frwr_state state = mr->frwr.fr_state; + struct rpcrdma_xprt *r_xprt = mr->mr_xprt; struct rpcrdma_ia *ia = &r_xprt->rx_ia; int rc; - rc = __frwr_reset_mr(ia, mw); + rc = __frwr_mr_reset(ia, mr); if (state != FRWR_FLUSHED_LI) ib_dma_unmap_sg(ia->ri_device, - mw->mw_sg, mw->mw_nents, mw->mw_dir); + mr->mr_sg, mr->mr_nents, mr->mr_dir); if (rc) goto out_release; - rpcrdma_put_mw(r_xprt, mw); + rpcrdma_mr_put(mr); r_xprt->rx_stats.mrs_recovered++; return; out_release: - pr_err("rpcrdma: FRWR reset failed %d, %p release\n", rc, mw); + pr_err("rpcrdma: FRWR reset failed %d, %p release\n", rc, mr); r_xprt->rx_stats.mrs_orphaned++; - spin_lock(&r_xprt->rx_buf.rb_mwlock); - list_del(&mw->mw_all); - spin_unlock(&r_xprt->rx_buf.rb_mwlock); + spin_lock(&r_xprt->rx_buf.rb_mrlock); + list_del(&mr->mr_all); + spin_unlock(&r_xprt->rx_buf.rb_mrlock); - frwr_op_release_mr(mw); + frwr_op_release_mr(mr); } static int @@ -347,40 +347,39 @@ frwr_wc_localinv_wake(struct ib_cq *cq, struct ib_wc *wc) */ static struct rpcrdma_mr_seg * frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg, - int nsegs, bool writing, struct rpcrdma_mw **out) + int nsegs, bool writing, struct rpcrdma_mr **out) { struct rpcrdma_ia *ia = &r_xprt->rx_ia; bool holes_ok = ia->ri_mrtype == IB_MR_TYPE_SG_GAPS; struct rpcrdma_frwr *frwr; - struct rpcrdma_mw *mw; - struct ib_mr *mr; + struct rpcrdma_mr *mr; + struct ib_mr *ibmr; struct ib_reg_wr *reg_wr; struct ib_send_wr *bad_wr; int rc, i, n; u8 key; - mw = NULL; + mr = NULL; do { - if (mw) - rpcrdma_defer_mr_recovery(mw); - mw = rpcrdma_get_mw(r_xprt); - if (!mw) + if (mr) + rpcrdma_mr_defer_recovery(mr); + mr = rpcrdma_mr_get(r_xprt); + if (!mr) return ERR_PTR(-ENOBUFS); - } while (mw->frwr.fr_state != FRWR_IS_INVALID); - frwr = &mw->frwr; + } while (mr->frwr.fr_state != FRWR_IS_INVALID); + frwr = &mr->frwr; frwr->fr_state = FRWR_IS_VALID; - mr = frwr->fr_mr; if (nsegs > ia->ri_max_frwr_depth) nsegs = ia->ri_max_frwr_depth; for (i = 0; i < nsegs;) { if (seg->mr_page) - sg_set_page(&mw->mw_sg[i], + sg_set_page(&mr->mr_sg[i], seg->mr_page, seg->mr_len, offset_in_page(seg->mr_offset)); else - sg_set_buf(&mw->mw_sg[i], seg->mr_offset, + sg_set_buf(&mr->mr_sg[i], seg->mr_offset, seg->mr_len); ++seg; @@ -391,21 +390,22 @@ frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg, offset_in_page((seg-1)->mr_offset + (seg-1)->mr_len)) break; } - mw->mw_dir = rpcrdma_data_dir(writing); + mr->mr_dir = rpcrdma_data_dir(writing); - mw->mw_nents = ib_dma_map_sg(ia->ri_device, mw->mw_sg, i, mw->mw_dir); - if (!mw->mw_nents) + mr->mr_nents = ib_dma_map_sg(ia->ri_device, mr->mr_sg, i, mr->mr_dir); + if (!mr->mr_nents) goto out_dmamap_err; - n = ib_map_mr_sg(mr, mw->mw_sg, mw->mw_nents, NULL, PAGE_SIZE); - if (unlikely(n != mw->mw_nents)) + ibmr = frwr->fr_mr; + n = ib_map_mr_sg(ibmr, mr->mr_sg, mr->mr_nents, NULL, PAGE_SIZE); + if (unlikely(n != mr->mr_nents)) goto out_mapmr_err; dprintk("RPC: %s: Using frwr %p to map %u segments (%llu bytes)\n", - __func__, frwr, mw->mw_nents, mr->length); + __func__, frwr, mr->mr_nents, ibmr->length); - key = (u8)(mr->rkey & 0x000000FF); - ib_update_fast_reg_key(mr, ++key); + key = (u8)(ibmr->rkey & 0x000000FF); + ib_update_fast_reg_key(ibmr, ++key); reg_wr = &frwr->fr_regwr; reg_wr->wr.next = NULL; @@ -414,8 +414,8 @@ frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg, reg_wr->wr.wr_cqe = &frwr->fr_cqe; reg_wr->wr.num_sge = 0; reg_wr->wr.send_flags = 0; - reg_wr->mr = mr; - reg_wr->key = mr->rkey; + reg_wr->mr = ibmr; + reg_wr->key = ibmr->rkey; reg_wr->access = writing ? IB_ACCESS_REMOTE_WRITE | IB_ACCESS_LOCAL_WRITE : IB_ACCESS_REMOTE_READ; @@ -424,48 +424,48 @@ frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg, if (rc) goto out_senderr; - mw->mw_handle = mr->rkey; - mw->mw_length = mr->length; - mw->mw_offset = mr->iova; + mr->mr_handle = ibmr->rkey; + mr->mr_length = ibmr->length; + mr->mr_offset = ibmr->iova; - *out = mw; + *out = mr; return seg; out_dmamap_err: pr_err("rpcrdma: failed to DMA map sg %p sg_nents %d\n", - mw->mw_sg, i); + mr->mr_sg, i); frwr->fr_state = FRWR_IS_INVALID; - rpcrdma_put_mw(r_xprt, mw); + rpcrdma_mr_put(mr); return ERR_PTR(-EIO); out_mapmr_err: pr_err("rpcrdma: failed to map mr %p (%d/%d)\n", - frwr->fr_mr, n, mw->mw_nents); - rpcrdma_defer_mr_recovery(mw); + frwr->fr_mr, n, mr->mr_nents); + rpcrdma_mr_defer_recovery(mr); return ERR_PTR(-EIO); out_senderr: pr_err("rpcrdma: FRWR registration ib_post_send returned %i\n", rc); - rpcrdma_defer_mr_recovery(mw); + rpcrdma_mr_defer_recovery(mr); return ERR_PTR(-ENOTCONN); } -/* Handle a remotely invalidated mw on the @mws list +/* Handle a remotely invalidated mr on the @mrs list */ static void -frwr_op_reminv(struct rpcrdma_rep *rep, struct list_head *mws) +frwr_op_reminv(struct rpcrdma_rep *rep, struct list_head *mrs) { - struct rpcrdma_mw *mw; + struct rpcrdma_mr *mr; - list_for_each_entry(mw, mws, mw_list) - if (mw->mw_handle == rep->rr_inv_rkey) { - struct rpcrdma_xprt *r_xprt = mw->mw_xprt; + list_for_each_entry(mr, mrs, mr_list) + if (mr->mr_handle == rep->rr_inv_rkey) { + struct rpcrdma_xprt *r_xprt = mr->mr_xprt; - list_del(&mw->mw_list); - mw->frwr.fr_state = FRWR_IS_INVALID; + list_del(&mr->mr_list); + mr->frwr.fr_state = FRWR_IS_INVALID; ib_dma_unmap_sg(r_xprt->rx_ia.ri_device, - mw->mw_sg, mw->mw_nents, mw->mw_dir); - rpcrdma_put_mw(r_xprt, mw); + mr->mr_sg, mr->mr_nents, mr->mr_dir); + rpcrdma_mr_put(mr); break; /* only one invalidated MR per RPC */ } } @@ -475,16 +475,16 @@ frwr_op_reminv(struct rpcrdma_rep *rep, struct list_head *mws) * Sleeps until it is safe for the host CPU to access the * previously mapped memory regions. * - * Caller ensures that @mws is not empty before the call. This + * Caller ensures that @mrs is not empty before the call. This * function empties the list. */ static void -frwr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mws) +frwr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs) { struct ib_send_wr *first, **prev, *last, *bad_wr; struct rpcrdma_ia *ia = &r_xprt->rx_ia; struct rpcrdma_frwr *frwr; - struct rpcrdma_mw *mw; + struct rpcrdma_mr *mr; int count, rc; /* ORDER: Invalidate all of the MRs first @@ -495,10 +495,11 @@ frwr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mws) frwr = NULL; count = 0; prev = &first; - list_for_each_entry(mw, mws, mw_list) { - mw->frwr.fr_state = FRWR_IS_INVALID; + list_for_each_entry(mr, mrs, mr_list) { + mr->frwr.fr_state = FRWR_IS_INVALID; + + frwr = &mr->frwr; - frwr = &mw->frwr; dprintk("RPC: %s: invalidating frwr %p\n", __func__, frwr); @@ -507,7 +508,7 @@ frwr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mws) memset(last, 0, sizeof(*last)); last->wr_cqe = &frwr->fr_cqe; last->opcode = IB_WR_LOCAL_INV; - last->ex.invalidate_rkey = mw->mw_handle; + last->ex.invalidate_rkey = mr->mr_handle; count++; *prev = last; @@ -537,16 +538,16 @@ frwr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mws) goto reset_mrs; /* ORDER: Now DMA unmap all of the MRs, and return - * them to the free MW list. + * them to the free MR list. */ unmap: - while (!list_empty(mws)) { - mw = rpcrdma_pop_mw(mws); + while (!list_empty(mrs)) { + mr = rpcrdma_mr_pop(mrs); dprintk("RPC: %s: DMA unmapping frwr %p\n", - __func__, &mw->frwr); + __func__, &mr->frwr); ib_dma_unmap_sg(ia->ri_device, - mw->mw_sg, mw->mw_nents, mw->mw_dir); - rpcrdma_put_mw(r_xprt, mw); + mr->mr_sg, mr->mr_nents, mr->mr_dir); + rpcrdma_mr_put(mr); } return; @@ -559,9 +560,9 @@ reset_mrs: while (bad_wr) { frwr = container_of(bad_wr, struct rpcrdma_frwr, fr_invwr); - mw = container_of(frwr, struct rpcrdma_mw, frwr); + mr = container_of(frwr, struct rpcrdma_mr, frwr); - __frwr_reset_mr(ia, mw); + __frwr_mr_reset(ia, mr); bad_wr = bad_wr->next; } diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c index 9207aeacd2c3..9601af01653f 100644 --- a/net/sunrpc/xprtrdma/rpc_rdma.c +++ b/net/sunrpc/xprtrdma/rpc_rdma.c @@ -292,15 +292,15 @@ encode_item_not_present(struct xdr_stream *xdr) } static void -xdr_encode_rdma_segment(__be32 *iptr, struct rpcrdma_mw *mw) +xdr_encode_rdma_segment(__be32 *iptr, struct rpcrdma_mr *mr) { - *iptr++ = cpu_to_be32(mw->mw_handle); - *iptr++ = cpu_to_be32(mw->mw_length); - xdr_encode_hyper(iptr, mw->mw_offset); + *iptr++ = cpu_to_be32(mr->mr_handle); + *iptr++ = cpu_to_be32(mr->mr_length); + xdr_encode_hyper(iptr, mr->mr_offset); } static int -encode_rdma_segment(struct xdr_stream *xdr, struct rpcrdma_mw *mw) +encode_rdma_segment(struct xdr_stream *xdr, struct rpcrdma_mr *mr) { __be32 *p; @@ -308,12 +308,12 @@ encode_rdma_segment(struct xdr_stream *xdr, struct rpcrdma_mw *mw) if (unlikely(!p)) return -EMSGSIZE; - xdr_encode_rdma_segment(p, mw); + xdr_encode_rdma_segment(p, mr); return 0; } static int -encode_read_segment(struct xdr_stream *xdr, struct rpcrdma_mw *mw, +encode_read_segment(struct xdr_stream *xdr, struct rpcrdma_mr *mr, u32 position) { __be32 *p; @@ -324,7 +324,7 @@ encode_read_segment(struct xdr_stream *xdr, struct rpcrdma_mw *mw, *p++ = xdr_one; /* Item present */ *p++ = cpu_to_be32(position); - xdr_encode_rdma_segment(p, mw); + xdr_encode_rdma_segment(p, mr); return 0; } @@ -348,7 +348,7 @@ rpcrdma_encode_read_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, { struct xdr_stream *xdr = &req->rl_stream; struct rpcrdma_mr_seg *seg; - struct rpcrdma_mw *mw; + struct rpcrdma_mr *mr; unsigned int pos; int nsegs; @@ -363,21 +363,21 @@ rpcrdma_encode_read_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, do { seg = r_xprt->rx_ia.ri_ops->ro_map(r_xprt, seg, nsegs, - false, &mw); + false, &mr); if (IS_ERR(seg)) return PTR_ERR(seg); - rpcrdma_push_mw(mw, &req->rl_registered); + rpcrdma_mr_push(mr, &req->rl_registered); - if (encode_read_segment(xdr, mw, pos) < 0) + if (encode_read_segment(xdr, mr, pos) < 0) return -EMSGSIZE; dprintk("RPC: %5u %s: pos %u %u@0x%016llx:0x%08x (%s)\n", rqst->rq_task->tk_pid, __func__, pos, - mw->mw_length, (unsigned long long)mw->mw_offset, - mw->mw_handle, mw->mw_nents < nsegs ? "more" : "last"); + mr->mr_length, (unsigned long long)mr->mr_offset, + mr->mr_handle, mr->mr_nents < nsegs ? "more" : "last"); r_xprt->rx_stats.read_chunk_count++; - nsegs -= mw->mw_nents; + nsegs -= mr->mr_nents; } while (nsegs); return 0; @@ -404,7 +404,7 @@ rpcrdma_encode_write_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, { struct xdr_stream *xdr = &req->rl_stream; struct rpcrdma_mr_seg *seg; - struct rpcrdma_mw *mw; + struct rpcrdma_mr *mr; int nsegs, nchunks; __be32 *segcount; @@ -425,23 +425,23 @@ rpcrdma_encode_write_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, nchunks = 0; do { seg = r_xprt->rx_ia.ri_ops->ro_map(r_xprt, seg, nsegs, - true, &mw); + true, &mr); if (IS_ERR(seg)) return PTR_ERR(seg); - rpcrdma_push_mw(mw, &req->rl_registered); + rpcrdma_mr_push(mr, &req->rl_registered); - if (encode_rdma_segment(xdr, mw) < 0) + if (encode_rdma_segment(xdr, mr) < 0) return -EMSGSIZE; dprintk("RPC: %5u %s: %u@0x016%llx:0x%08x (%s)\n", rqst->rq_task->tk_pid, __func__, - mw->mw_length, (unsigned long long)mw->mw_offset, - mw->mw_handle, mw->mw_nents < nsegs ? "more" : "last"); + mr->mr_length, (unsigned long long)mr->mr_offset, + mr->mr_handle, mr->mr_nents < nsegs ? "more" : "last"); r_xprt->rx_stats.write_chunk_count++; r_xprt->rx_stats.total_rdma_request += seg->mr_len; nchunks++; - nsegs -= mw->mw_nents; + nsegs -= mr->mr_nents; } while (nsegs); /* Update count of segments in this Write chunk */ @@ -468,7 +468,7 @@ rpcrdma_encode_reply_chunk(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, { struct xdr_stream *xdr = &req->rl_stream; struct rpcrdma_mr_seg *seg; - struct rpcrdma_mw *mw; + struct rpcrdma_mr *mr; int nsegs, nchunks; __be32 *segcount; @@ -487,23 +487,23 @@ rpcrdma_encode_reply_chunk(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, nchunks = 0; do { seg = r_xprt->rx_ia.ri_ops->ro_map(r_xprt, seg, nsegs, - true, &mw); + true, &mr); if (IS_ERR(seg)) return PTR_ERR(seg); - rpcrdma_push_mw(mw, &req->rl_registered); + rpcrdma_mr_push(mr, &req->rl_registered); - if (encode_rdma_segment(xdr, mw) < 0) + if (encode_rdma_segment(xdr, mr) < 0) return -EMSGSIZE; dprintk("RPC: %5u %s: %u@0x%016llx:0x%08x (%s)\n", rqst->rq_task->tk_pid, __func__, - mw->mw_length, (unsigned long long)mw->mw_offset, - mw->mw_handle, mw->mw_nents < nsegs ? "more" : "last"); + mr->mr_length, (unsigned long long)mr->mr_offset, + mr->mr_handle, mr->mr_nents < nsegs ? "more" : "last"); r_xprt->rx_stats.reply_chunk_count++; r_xprt->rx_stats.total_rdma_request += seg->mr_len; nchunks++; - nsegs -= mw->mw_nents; + nsegs -= mr->mr_nents; } while (nsegs); /* Update count of segments in the Reply chunk */ @@ -821,10 +821,10 @@ rpcrdma_marshal_req(struct rpcrdma_xprt *r_xprt, struct rpc_rqst *rqst) * so these registrations are invalid and unusable. */ while (unlikely(!list_empty(&req->rl_registered))) { - struct rpcrdma_mw *mw; + struct rpcrdma_mr *mr; - mw = rpcrdma_pop_mw(&req->rl_registered); - rpcrdma_defer_mr_recovery(mw); + mr = rpcrdma_mr_pop(&req->rl_registered); + rpcrdma_mr_defer_recovery(mr); } /* This implementation supports the following combinations diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index 840579919ad0..2582729f8c64 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -71,8 +71,8 @@ /* * internal functions */ -static void rpcrdma_create_mrs(struct rpcrdma_xprt *r_xprt); -static void rpcrdma_destroy_mrs(struct rpcrdma_buffer *buf); +static void rpcrdma_mrs_create(struct rpcrdma_xprt *r_xprt); +static void rpcrdma_mrs_destroy(struct rpcrdma_buffer *buf); static void rpcrdma_dma_unmap_regbuf(struct rpcrdma_regbuf *rb); struct workqueue_struct *rpcrdma_receive_wq __read_mostly; @@ -458,7 +458,7 @@ rpcrdma_ia_remove(struct rpcrdma_ia *ia) rpcrdma_dma_unmap_regbuf(req->rl_sendbuf); rpcrdma_dma_unmap_regbuf(req->rl_recvbuf); } - rpcrdma_destroy_mrs(buf); + rpcrdma_mrs_destroy(buf); /* Allow waiters to continue */ complete(&ia->ri_remove_done); @@ -671,7 +671,7 @@ rpcrdma_ep_recreate_xprt(struct rpcrdma_xprt *r_xprt, goto out3; } - rpcrdma_create_mrs(r_xprt); + rpcrdma_mrs_create(r_xprt); return 0; out3: @@ -992,15 +992,15 @@ rpcrdma_mr_recovery_worker(struct work_struct *work) { struct rpcrdma_buffer *buf = container_of(work, struct rpcrdma_buffer, rb_recovery_worker.work); - struct rpcrdma_mw *mw; + struct rpcrdma_mr *mr; spin_lock(&buf->rb_recovery_lock); while (!list_empty(&buf->rb_stale_mrs)) { - mw = rpcrdma_pop_mw(&buf->rb_stale_mrs); + mr = rpcrdma_mr_pop(&buf->rb_stale_mrs); spin_unlock(&buf->rb_recovery_lock); - dprintk("RPC: %s: recovering MR %p\n", __func__, mw); - mw->mw_xprt->rx_ia.ri_ops->ro_recover_mr(mw); + dprintk("RPC: %s: recovering MR %p\n", __func__, mr); + mr->mr_xprt->rx_ia.ri_ops->ro_recover_mr(mr); spin_lock(&buf->rb_recovery_lock); } @@ -1008,20 +1008,20 @@ rpcrdma_mr_recovery_worker(struct work_struct *work) } void -rpcrdma_defer_mr_recovery(struct rpcrdma_mw *mw) +rpcrdma_mr_defer_recovery(struct rpcrdma_mr *mr) { - struct rpcrdma_xprt *r_xprt = mw->mw_xprt; + struct rpcrdma_xprt *r_xprt = mr->mr_xprt; struct rpcrdma_buffer *buf = &r_xprt->rx_buf; spin_lock(&buf->rb_recovery_lock); - rpcrdma_push_mw(mw, &buf->rb_stale_mrs); + rpcrdma_mr_push(mr, &buf->rb_stale_mrs); spin_unlock(&buf->rb_recovery_lock); schedule_delayed_work(&buf->rb_recovery_worker, 0); } static void -rpcrdma_create_mrs(struct rpcrdma_xprt *r_xprt) +rpcrdma_mrs_create(struct rpcrdma_xprt *r_xprt) { struct rpcrdma_buffer *buf = &r_xprt->rx_buf; struct rpcrdma_ia *ia = &r_xprt->rx_ia; @@ -1030,30 +1030,30 @@ rpcrdma_create_mrs(struct rpcrdma_xprt *r_xprt) LIST_HEAD(all); for (count = 0; count < 32; count++) { - struct rpcrdma_mw *mw; + struct rpcrdma_mr *mr; int rc; - mw = kzalloc(sizeof(*mw), GFP_KERNEL); - if (!mw) + mr = kzalloc(sizeof(*mr), GFP_KERNEL); + if (!mr) break; - rc = ia->ri_ops->ro_init_mr(ia, mw); + rc = ia->ri_ops->ro_init_mr(ia, mr); if (rc) { - kfree(mw); + kfree(mr); break; } - mw->mw_xprt = r_xprt; + mr->mr_xprt = r_xprt; - list_add(&mw->mw_list, &free); - list_add(&mw->mw_all, &all); + list_add(&mr->mr_list, &free); + list_add(&mr->mr_all, &all); } - spin_lock(&buf->rb_mwlock); - list_splice(&free, &buf->rb_mws); + spin_lock(&buf->rb_mrlock); + list_splice(&free, &buf->rb_mrs); list_splice(&all, &buf->rb_all); r_xprt->rx_stats.mrs_allocated += count; - spin_unlock(&buf->rb_mwlock); + spin_unlock(&buf->rb_mrlock); dprintk("RPC: %s: created %u MRs\n", __func__, count); } @@ -1066,7 +1066,7 @@ rpcrdma_mr_refresh_worker(struct work_struct *work) struct rpcrdma_xprt *r_xprt = container_of(buf, struct rpcrdma_xprt, rx_buf); - rpcrdma_create_mrs(r_xprt); + rpcrdma_mrs_create(r_xprt); } struct rpcrdma_req * @@ -1144,10 +1144,10 @@ rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt) buf->rb_max_requests = r_xprt->rx_data.max_requests; buf->rb_bc_srv_max_requests = 0; - spin_lock_init(&buf->rb_mwlock); + spin_lock_init(&buf->rb_mrlock); spin_lock_init(&buf->rb_lock); spin_lock_init(&buf->rb_recovery_lock); - INIT_LIST_HEAD(&buf->rb_mws); + INIT_LIST_HEAD(&buf->rb_mrs); INIT_LIST_HEAD(&buf->rb_all); INIT_LIST_HEAD(&buf->rb_stale_mrs); INIT_DELAYED_WORK(&buf->rb_refresh_worker, @@ -1155,7 +1155,7 @@ rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt) INIT_DELAYED_WORK(&buf->rb_recovery_worker, rpcrdma_mr_recovery_worker); - rpcrdma_create_mrs(r_xprt); + rpcrdma_mrs_create(r_xprt); INIT_LIST_HEAD(&buf->rb_send_bufs); INIT_LIST_HEAD(&buf->rb_allreqs); @@ -1229,26 +1229,26 @@ rpcrdma_destroy_req(struct rpcrdma_req *req) } static void -rpcrdma_destroy_mrs(struct rpcrdma_buffer *buf) +rpcrdma_mrs_destroy(struct rpcrdma_buffer *buf) { struct rpcrdma_xprt *r_xprt = container_of(buf, struct rpcrdma_xprt, rx_buf); struct rpcrdma_ia *ia = rdmab_to_ia(buf); - struct rpcrdma_mw *mw; + struct rpcrdma_mr *mr; unsigned int count; count = 0; - spin_lock(&buf->rb_mwlock); + spin_lock(&buf->rb_mrlock); while (!list_empty(&buf->rb_all)) { - mw = list_entry(buf->rb_all.next, struct rpcrdma_mw, mw_all); - list_del(&mw->mw_all); + mr = list_entry(buf->rb_all.next, struct rpcrdma_mr, mr_all); + list_del(&mr->mr_all); - spin_unlock(&buf->rb_mwlock); - ia->ri_ops->ro_release_mr(mw); + spin_unlock(&buf->rb_mrlock); + ia->ri_ops->ro_release_mr(mr); count++; - spin_lock(&buf->rb_mwlock); + spin_lock(&buf->rb_mrlock); } - spin_unlock(&buf->rb_mwlock); + spin_unlock(&buf->rb_mrlock); r_xprt->rx_stats.mrs_allocated = 0; dprintk("RPC: %s: released %u MRs\n", __func__, count); @@ -1285,26 +1285,33 @@ rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf) spin_unlock(&buf->rb_reqslock); buf->rb_recv_count = 0; - rpcrdma_destroy_mrs(buf); + rpcrdma_mrs_destroy(buf); } -struct rpcrdma_mw * -rpcrdma_get_mw(struct rpcrdma_xprt *r_xprt) +/** + * rpcrdma_mr_get - Allocate an rpcrdma_mr object + * @r_xprt: controlling transport + * + * Returns an initialized rpcrdma_mr or NULL if no free + * rpcrdma_mr objects are available. + */ +struct rpcrdma_mr * +rpcrdma_mr_get(struct rpcrdma_xprt *r_xprt) { struct rpcrdma_buffer *buf = &r_xprt->rx_buf; - struct rpcrdma_mw *mw = NULL; + struct rpcrdma_mr *mr = NULL; - spin_lock(&buf->rb_mwlock); - if (!list_empty(&buf->rb_mws)) - mw = rpcrdma_pop_mw(&buf->rb_mws); - spin_unlock(&buf->rb_mwlock); + spin_lock(&buf->rb_mrlock); + if (!list_empty(&buf->rb_mrs)) + mr = rpcrdma_mr_pop(&buf->rb_mrs); + spin_unlock(&buf->rb_mrlock); - if (!mw) - goto out_nomws; - return mw; + if (!mr) + goto out_nomrs; + return mr; -out_nomws: - dprintk("RPC: %s: no MWs available\n", __func__); +out_nomrs: + dprintk("RPC: %s: no MRs available\n", __func__); if (r_xprt->rx_ep.rep_connected != -ENODEV) schedule_delayed_work(&buf->rb_refresh_worker, 0); @@ -1314,14 +1321,20 @@ out_nomws: return NULL; } +/** + * rpcrdma_mr_put - Release an rpcrdma_mr object + * @mr: object to release + * + */ void -rpcrdma_put_mw(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mw *mw) +rpcrdma_mr_put(struct rpcrdma_mr *mr) { + struct rpcrdma_xprt *r_xprt = mr->mr_xprt; struct rpcrdma_buffer *buf = &r_xprt->rx_buf; - spin_lock(&buf->rb_mwlock); - rpcrdma_push_mw(mw, &buf->rb_mws); - spin_unlock(&buf->rb_mwlock); + spin_lock(&buf->rb_mrlock); + rpcrdma_mr_push(mr, &buf->rb_mrs); + spin_unlock(&buf->rb_mrlock); } static struct rpcrdma_rep * diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index f52269afaa09..530ace6ed125 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -230,12 +230,12 @@ enum { }; /* - * struct rpcrdma_mw - external memory region metadata + * struct rpcrdma_mr - external memory region metadata * * An external memory region is any buffer or page that is registered * on the fly (ie, not pre-registered). * - * Each rpcrdma_buffer has a list of free MWs anchored in rb_mws. During + * Each rpcrdma_buffer has a list of free MWs anchored in rb_mrs. During * call_allocate, rpcrdma_buffer_get() assigns one to each segment in * an rpcrdma_req. Then rpcrdma_register_external() grabs these to keep * track of registration metadata while each RPC is pending. @@ -265,20 +265,20 @@ struct rpcrdma_fmr { u64 *fm_physaddrs; }; -struct rpcrdma_mw { - struct list_head mw_list; - struct scatterlist *mw_sg; - int mw_nents; - enum dma_data_direction mw_dir; +struct rpcrdma_mr { + struct list_head mr_list; + struct scatterlist *mr_sg; + int mr_nents; + enum dma_data_direction mr_dir; union { struct rpcrdma_fmr fmr; struct rpcrdma_frwr frwr; }; - struct rpcrdma_xprt *mw_xprt; - u32 mw_handle; - u32 mw_length; - u64 mw_offset; - struct list_head mw_all; + struct rpcrdma_xprt *mr_xprt; + u32 mr_handle; + u32 mr_length; + u64 mr_offset; + struct list_head mr_all; }; /* @@ -371,19 +371,19 @@ rpcr_to_rdmar(struct rpc_rqst *rqst) } static inline void -rpcrdma_push_mw(struct rpcrdma_mw *mw, struct list_head *list) +rpcrdma_mr_push(struct rpcrdma_mr *mr, struct list_head *list) { - list_add_tail(&mw->mw_list, list); + list_add_tail(&mr->mr_list, list); } -static inline struct rpcrdma_mw * -rpcrdma_pop_mw(struct list_head *list) +static inline struct rpcrdma_mr * +rpcrdma_mr_pop(struct list_head *list) { - struct rpcrdma_mw *mw; + struct rpcrdma_mr *mr; - mw = list_first_entry(list, struct rpcrdma_mw, mw_list); - list_del(&mw->mw_list); - return mw; + mr = list_first_entry(list, struct rpcrdma_mr, mr_list); + list_del(&mr->mr_list); + return mr; } /* @@ -393,8 +393,8 @@ rpcrdma_pop_mw(struct list_head *list) * One of these is associated with a transport instance */ struct rpcrdma_buffer { - spinlock_t rb_mwlock; /* protect rb_mws list */ - struct list_head rb_mws; + spinlock_t rb_mrlock; /* protect rb_mrs list */ + struct list_head rb_mrs; struct list_head rb_all; unsigned long rb_sc_head; @@ -473,19 +473,19 @@ struct rpcrdma_memreg_ops { struct rpcrdma_mr_seg * (*ro_map)(struct rpcrdma_xprt *, struct rpcrdma_mr_seg *, int, bool, - struct rpcrdma_mw **); + struct rpcrdma_mr **); void (*ro_reminv)(struct rpcrdma_rep *rep, - struct list_head *mws); + struct list_head *mrs); void (*ro_unmap_sync)(struct rpcrdma_xprt *, struct list_head *); - void (*ro_recover_mr)(struct rpcrdma_mw *); + void (*ro_recover_mr)(struct rpcrdma_mr *mr); int (*ro_open)(struct rpcrdma_ia *, struct rpcrdma_ep *, struct rpcrdma_create_data_internal *); size_t (*ro_maxpages)(struct rpcrdma_xprt *); int (*ro_init_mr)(struct rpcrdma_ia *, - struct rpcrdma_mw *); - void (*ro_release_mr)(struct rpcrdma_mw *); + struct rpcrdma_mr *); + void (*ro_release_mr)(struct rpcrdma_mr *mr); const char *ro_displayname; const int ro_send_w_inv_ok; }; @@ -574,15 +574,15 @@ void rpcrdma_buffer_destroy(struct rpcrdma_buffer *); struct rpcrdma_sendctx *rpcrdma_sendctx_get_locked(struct rpcrdma_buffer *buf); void rpcrdma_sendctx_put_locked(struct rpcrdma_sendctx *sc); -struct rpcrdma_mw *rpcrdma_get_mw(struct rpcrdma_xprt *); -void rpcrdma_put_mw(struct rpcrdma_xprt *, struct rpcrdma_mw *); +struct rpcrdma_mr *rpcrdma_mr_get(struct rpcrdma_xprt *r_xprt); +void rpcrdma_mr_put(struct rpcrdma_mr *mr); +void rpcrdma_mr_defer_recovery(struct rpcrdma_mr *mr); + struct rpcrdma_req *rpcrdma_buffer_get(struct rpcrdma_buffer *); void rpcrdma_buffer_put(struct rpcrdma_req *); void rpcrdma_recv_buffer_get(struct rpcrdma_req *); void rpcrdma_recv_buffer_put(struct rpcrdma_rep *); -void rpcrdma_defer_mr_recovery(struct rpcrdma_mw *); - struct rpcrdma_regbuf *rpcrdma_alloc_regbuf(size_t, enum dma_data_direction, gfp_t); bool __rpcrdma_dma_map_regbuf(struct rpcrdma_ia *, struct rpcrdma_regbuf *);