diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-16 10:48:28 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-16 10:48:28 -0800 |
commit | 759b2656b259d10935647a92dbfae7fafee6a790 (patch) | |
tree | dbd7372555046c1c5c4be288f267c6e620079334 /net/sunrpc/xprtrdma | |
parent | 9a19a6db37ee0b7a6db796b3dcd6bb6e7237d6ea (diff) | |
parent | 47057abde515155a4fee53038e7772d6b387e0aa (diff) | |
download | linux-759b2656b259d10935647a92dbfae7fafee6a790.tar.gz linux-759b2656b259d10935647a92dbfae7fafee6a790.tar.bz2 linux-759b2656b259d10935647a92dbfae7fafee6a790.zip |
Merge tag 'nfsd-4.10' of git://linux-nfs.org/~bfields/linux
Pull nfsd updates from Bruce Fields:
"The one new feature is support for a new NFSv4.2 mode_umask attribute
that makes ACL inheritance a little more useful in environments that
default to restrictive umasks. Requires client-side support, also on
its way for 4.10.
Other than that, miscellaneous smaller fixes and cleanup, especially
to the server rdma code"
[ The client side of the umask attribute was merged yesterday ]
* tag 'nfsd-4.10' of git://linux-nfs.org/~bfields/linux:
nfsd: add support for the umask attribute
sunrpc: use DEFINE_SPINLOCK()
svcrdma: Further clean-up of svc_rdma_get_inv_rkey()
svcrdma: Break up dprintk format in svc_rdma_accept()
svcrdma: Remove unused variable in rdma_copy_tail()
svcrdma: Remove unused variables in xprt_rdma_bc_allocate()
svcrdma: Remove svc_rdma_op_ctxt::wc_status
svcrdma: Remove DMA map accounting
svcrdma: Remove BH-disabled spin locking in svc_rdma_send()
svcrdma: Renovate sendto chunk list parsing
svcauth_gss: Close connection when dropping an incoming message
svcrdma: Clear xpt_bc_xps in xprt_setup_rdma_bc() error exit arm
nfsd: constify reply_cache_stats_operations structure
nfsd: update workqueue creation
sunrpc: GFP_KERNEL should be GFP_NOFS in crypto code
nfsd: catch errors in decode_fattr earlier
nfsd: clean up supported attribute handling
nfsd: fix error handling for clients that fail to return the layout
nfsd: more robust allocation failure handling in nfsd_reply_cache_init
Diffstat (limited to 'net/sunrpc/xprtrdma')
-rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_backchannel.c | 5 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 21 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_sendto.c | 116 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_transport.c | 94 |
4 files changed, 83 insertions, 153 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c index 20027f8de129..288e35c2d8f4 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c +++ b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c @@ -164,13 +164,9 @@ static int xprt_rdma_bc_allocate(struct rpc_task *task) { struct rpc_rqst *rqst = task->tk_rqstp; - struct svc_xprt *sxprt = rqst->rq_xprt->bc_xprt; size_t size = rqst->rq_callsize; - struct svcxprt_rdma *rdma; struct page *page; - rdma = container_of(sxprt, struct svcxprt_rdma, sc_xprt); - if (size > PAGE_SIZE) { WARN_ONCE(1, "svcrdma: large bc buffer request (size %zu)\n", size); @@ -359,6 +355,7 @@ xprt_setup_rdma_bc(struct xprt_create *args) out_fail: xprt_rdma_free_addresses(xprt); args->bc_xprt->xpt_bc_xprt = NULL; + args->bc_xprt->xpt_bc_xps = NULL; xprt_put(xprt); xprt_free(xprt); return ERR_PTR(-EINVAL); diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c index ad1df979b3f0..57d35fbb1c28 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c +++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c @@ -279,7 +279,6 @@ int rdma_read_chunk_frmr(struct svcxprt_rdma *xprt, frmr->sg); return -ENOMEM; } - atomic_inc(&xprt->sc_dma_used); n = ib_map_mr_sg(frmr->mr, frmr->sg, frmr->sg_nents, NULL, PAGE_SIZE); if (unlikely(n != frmr->sg_nents)) { @@ -374,9 +373,7 @@ rdma_copy_tail(struct svc_rqst *rqstp, struct svc_rdma_op_ctxt *head, u32 position, u32 byte_count, u32 page_offset, int page_no) { char *srcp, *destp; - int ret; - ret = 0; srcp = head->arg.head[0].iov_base + position; byte_count = head->arg.head[0].iov_len - position; if (byte_count > PAGE_SIZE) { @@ -415,6 +412,20 @@ done: return 1; } +/* Returns the address of the first read chunk or <nul> if no read chunk + * is present + */ +static struct rpcrdma_read_chunk * +svc_rdma_get_read_chunk(struct rpcrdma_msg *rmsgp) +{ + struct rpcrdma_read_chunk *ch = + (struct rpcrdma_read_chunk *)&rmsgp->rm_body.rm_chunks[0]; + + if (ch->rc_discrim == xdr_zero) + return NULL; + return ch; +} + static int rdma_read_chunks(struct svcxprt_rdma *xprt, struct rpcrdma_msg *rmsgp, struct svc_rqst *rqstp, @@ -627,8 +638,8 @@ int svc_rdma_recvfrom(struct svc_rqst *rqstp) goto defer; goto out; } - dprintk("svcrdma: processing ctxt=%p on xprt=%p, rqstp=%p, status=%d\n", - ctxt, rdma_xprt, rqstp, ctxt->wc_status); + dprintk("svcrdma: processing ctxt=%p on xprt=%p, rqstp=%p\n", + ctxt, rdma_xprt, rqstp); atomic_inc(&rdma_stat_recv); /* Build up the XDR from the receive buffers. */ diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c index f5a91edcd233..ad4d286a83c5 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c +++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c @@ -153,76 +153,35 @@ static dma_addr_t dma_map_xdr(struct svcxprt_rdma *xprt, return dma_addr; } -/* Returns the address of the first read chunk or <nul> if no read chunk - * is present +/* Parse the RPC Call's transport header. */ -struct rpcrdma_read_chunk * -svc_rdma_get_read_chunk(struct rpcrdma_msg *rmsgp) +static void svc_rdma_get_write_arrays(struct rpcrdma_msg *rmsgp, + struct rpcrdma_write_array **write, + struct rpcrdma_write_array **reply) { - struct rpcrdma_read_chunk *ch = - (struct rpcrdma_read_chunk *)&rmsgp->rm_body.rm_chunks[0]; + __be32 *p; - if (ch->rc_discrim == xdr_zero) - return NULL; - return ch; -} + p = (__be32 *)&rmsgp->rm_body.rm_chunks[0]; -/* Returns the address of the first read write array element or <nul> - * if no write array list is present - */ -static struct rpcrdma_write_array * -svc_rdma_get_write_array(struct rpcrdma_msg *rmsgp) -{ - if (rmsgp->rm_body.rm_chunks[0] != xdr_zero || - rmsgp->rm_body.rm_chunks[1] == xdr_zero) - return NULL; - return (struct rpcrdma_write_array *)&rmsgp->rm_body.rm_chunks[1]; -} + /* Read list */ + while (*p++ != xdr_zero) + p += 5; -/* Returns the address of the first reply array element or <nul> if no - * reply array is present - */ -static struct rpcrdma_write_array * -svc_rdma_get_reply_array(struct rpcrdma_msg *rmsgp, - struct rpcrdma_write_array *wr_ary) -{ - struct rpcrdma_read_chunk *rch; - struct rpcrdma_write_array *rp_ary; - - /* XXX: Need to fix when reply chunk may occur with read list - * and/or write list. - */ - if (rmsgp->rm_body.rm_chunks[0] != xdr_zero || - rmsgp->rm_body.rm_chunks[1] != xdr_zero) - return NULL; - - rch = svc_rdma_get_read_chunk(rmsgp); - if (rch) { - while (rch->rc_discrim != xdr_zero) - rch++; - - /* The reply chunk follows an empty write array located - * at 'rc_position' here. The reply array is at rc_target. - */ - rp_ary = (struct rpcrdma_write_array *)&rch->rc_target; - goto found_it; - } - - if (wr_ary) { - int chunk = be32_to_cpu(wr_ary->wc_nchunks); - - rp_ary = (struct rpcrdma_write_array *) - &wr_ary->wc_array[chunk].wc_target.rs_length; - goto found_it; + /* Write list */ + if (*p != xdr_zero) { + *write = (struct rpcrdma_write_array *)p; + while (*p++ != xdr_zero) + p += 1 + be32_to_cpu(*p) * 4; + } else { + *write = NULL; + p++; } - /* No read list, no write list */ - rp_ary = (struct rpcrdma_write_array *)&rmsgp->rm_body.rm_chunks[2]; - - found_it: - if (rp_ary->wc_discrim == xdr_zero) - return NULL; - return rp_ary; + /* Reply chunk */ + if (*p != xdr_zero) + *reply = (struct rpcrdma_write_array *)p; + else + *reply = NULL; } /* RPC-over-RDMA Version One private extension: Remote Invalidation. @@ -240,31 +199,22 @@ static u32 svc_rdma_get_inv_rkey(struct rpcrdma_msg *rdma_argp, { struct rpcrdma_read_chunk *rd_ary; struct rpcrdma_segment *arg_ch; - u32 inv_rkey; - inv_rkey = 0; - - rd_ary = svc_rdma_get_read_chunk(rdma_argp); - if (rd_ary) { - inv_rkey = be32_to_cpu(rd_ary->rc_target.rs_handle); - goto out; - } + rd_ary = (struct rpcrdma_read_chunk *)&rdma_argp->rm_body.rm_chunks[0]; + if (rd_ary->rc_discrim != xdr_zero) + return be32_to_cpu(rd_ary->rc_target.rs_handle); if (wr_ary && be32_to_cpu(wr_ary->wc_nchunks)) { arg_ch = &wr_ary->wc_array[0].wc_target; - inv_rkey = be32_to_cpu(arg_ch->rs_handle); - goto out; + return be32_to_cpu(arg_ch->rs_handle); } if (rp_ary && be32_to_cpu(rp_ary->wc_nchunks)) { arg_ch = &rp_ary->wc_array[0].wc_target; - inv_rkey = be32_to_cpu(arg_ch->rs_handle); - goto out; + return be32_to_cpu(arg_ch->rs_handle); } -out: - dprintk("svcrdma: Send With Invalidate rkey=%08x\n", inv_rkey); - return inv_rkey; + return 0; } /* Assumptions: @@ -622,8 +572,7 @@ int svc_rdma_sendto(struct svc_rqst *rqstp) * places this at the start of page 0. */ rdma_argp = page_address(rqstp->rq_pages[0]); - wr_ary = svc_rdma_get_write_array(rdma_argp); - rp_ary = svc_rdma_get_reply_array(rdma_argp, wr_ary); + svc_rdma_get_write_arrays(rdma_argp, &wr_ary, &rp_ary); inv_rkey = 0; if (rdma->sc_snd_w_inv) @@ -636,7 +585,12 @@ int svc_rdma_sendto(struct svc_rqst *rqstp) goto err0; inline_bytes = rqstp->rq_res.len; - /* Create the RDMA response header */ + /* Create the RDMA response header. xprt->xpt_mutex, + * acquired in svc_send(), serializes RPC replies. The + * code path below that inserts the credit grant value + * into each transport header runs only inside this + * critical section. + */ ret = -ENOMEM; res_page = alloc_page(GFP_KERNEL); if (!res_page) diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c index 1334de2715c2..ca2799af05a6 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c @@ -41,6 +41,7 @@ */ #include <linux/sunrpc/svc_xprt.h> +#include <linux/sunrpc/addr.h> #include <linux/sunrpc/debug.h> #include <linux/sunrpc/rpc_rdma.h> #include <linux/interrupt.h> @@ -226,25 +227,22 @@ void svc_rdma_unmap_dma(struct svc_rdma_op_ctxt *ctxt) struct svcxprt_rdma *xprt = ctxt->xprt; struct ib_device *device = xprt->sc_cm_id->device; u32 lkey = xprt->sc_pd->local_dma_lkey; - unsigned int i, count; + unsigned int i; - for (count = 0, i = 0; i < ctxt->mapped_sges; i++) { + for (i = 0; i < ctxt->mapped_sges; i++) { /* * Unmap the DMA addr in the SGE if the lkey matches * the local_dma_lkey, otherwise, ignore it since it is * an FRMR lkey and will be unmapped later when the * last WR that uses it completes. */ - if (ctxt->sge[i].lkey == lkey) { - count++; + if (ctxt->sge[i].lkey == lkey) ib_dma_unmap_page(device, ctxt->sge[i].addr, ctxt->sge[i].length, ctxt->direction); - } } ctxt->mapped_sges = 0; - atomic_sub(count, &xprt->sc_dma_used); } void svc_rdma_put_context(struct svc_rdma_op_ctxt *ctxt, int free_pages) @@ -398,7 +396,6 @@ static void svc_rdma_wc_receive(struct ib_cq *cq, struct ib_wc *wc) /* WARNING: Only wc->wr_cqe and wc->status are reliable */ ctxt = container_of(cqe, struct svc_rdma_op_ctxt, cqe); - ctxt->wc_status = wc->status; svc_rdma_unmap_dma(ctxt); if (wc->status != IB_WC_SUCCESS) @@ -436,7 +433,7 @@ static void svc_rdma_send_wc_common(struct svcxprt_rdma *xprt, goto err; out: - atomic_dec(&xprt->sc_sq_count); + atomic_inc(&xprt->sc_sq_avail); wake_up(&xprt->sc_send_wait); return; @@ -946,7 +943,6 @@ void svc_rdma_put_frmr(struct svcxprt_rdma *rdma, if (frmr) { ib_dma_unmap_sg(rdma->sc_cm_id->device, frmr->sg, frmr->sg_nents, frmr->direction); - atomic_dec(&rdma->sc_dma_used); spin_lock_bh(&rdma->sc_frmr_q_lock); WARN_ON_ONCE(!list_empty(&frmr->frmr_list)); list_add(&frmr->frmr_list, &rdma->sc_frmr_q); @@ -973,6 +969,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) struct rpcrdma_connect_private pmsg; struct ib_qp_init_attr qp_attr; struct ib_device *dev; + struct sockaddr *sap; unsigned int i; int ret = 0; @@ -1010,6 +1007,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) newxprt->sc_rq_depth = newxprt->sc_max_requests + newxprt->sc_max_bc_requests; newxprt->sc_sq_depth = RPCRDMA_SQ_DEPTH_MULT * newxprt->sc_rq_depth; + atomic_set(&newxprt->sc_sq_avail, newxprt->sc_sq_depth); if (!svc_rdma_prealloc_ctxts(newxprt)) goto errout; @@ -1052,18 +1050,12 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) qp_attr.qp_type = IB_QPT_RC; qp_attr.send_cq = newxprt->sc_sq_cq; qp_attr.recv_cq = newxprt->sc_rq_cq; - dprintk("svcrdma: newxprt->sc_cm_id=%p, newxprt->sc_pd=%p\n" - " cm_id->device=%p, sc_pd->device=%p\n" - " cap.max_send_wr = %d\n" - " cap.max_recv_wr = %d\n" - " cap.max_send_sge = %d\n" - " cap.max_recv_sge = %d\n", - newxprt->sc_cm_id, newxprt->sc_pd, - dev, newxprt->sc_pd->device, - qp_attr.cap.max_send_wr, - qp_attr.cap.max_recv_wr, - qp_attr.cap.max_send_sge, - qp_attr.cap.max_recv_sge); + dprintk("svcrdma: newxprt->sc_cm_id=%p, newxprt->sc_pd=%p\n", + newxprt->sc_cm_id, newxprt->sc_pd); + dprintk(" cap.max_send_wr = %d, cap.max_recv_wr = %d\n", + qp_attr.cap.max_send_wr, qp_attr.cap.max_recv_wr); + dprintk(" cap.max_send_sge = %d, cap.max_recv_sge = %d\n", + qp_attr.cap.max_send_sge, qp_attr.cap.max_recv_sge); ret = rdma_create_qp(newxprt->sc_cm_id, newxprt->sc_pd, &qp_attr); if (ret) { @@ -1146,31 +1138,16 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) goto errout; } - dprintk("svcrdma: new connection %p accepted with the following " - "attributes:\n" - " local_ip : %pI4\n" - " local_port : %d\n" - " remote_ip : %pI4\n" - " remote_port : %d\n" - " max_sge : %d\n" - " max_sge_rd : %d\n" - " sq_depth : %d\n" - " max_requests : %d\n" - " ord : %d\n", - newxprt, - &((struct sockaddr_in *)&newxprt->sc_cm_id-> - route.addr.src_addr)->sin_addr.s_addr, - ntohs(((struct sockaddr_in *)&newxprt->sc_cm_id-> - route.addr.src_addr)->sin_port), - &((struct sockaddr_in *)&newxprt->sc_cm_id-> - route.addr.dst_addr)->sin_addr.s_addr, - ntohs(((struct sockaddr_in *)&newxprt->sc_cm_id-> - route.addr.dst_addr)->sin_port), - newxprt->sc_max_sge, - newxprt->sc_max_sge_rd, - newxprt->sc_sq_depth, - newxprt->sc_max_requests, - newxprt->sc_ord); + dprintk("svcrdma: new connection %p accepted:\n", newxprt); + sap = (struct sockaddr *)&newxprt->sc_cm_id->route.addr.src_addr; + dprintk(" local address : %pIS:%u\n", sap, rpc_get_port(sap)); + sap = (struct sockaddr *)&newxprt->sc_cm_id->route.addr.dst_addr; + dprintk(" remote address : %pIS:%u\n", sap, rpc_get_port(sap)); + dprintk(" max_sge : %d\n", newxprt->sc_max_sge); + dprintk(" max_sge_rd : %d\n", newxprt->sc_max_sge_rd); + dprintk(" sq_depth : %d\n", newxprt->sc_sq_depth); + dprintk(" max_requests : %d\n", newxprt->sc_max_requests); + dprintk(" ord : %d\n", newxprt->sc_ord); return &newxprt->sc_xprt; @@ -1257,9 +1234,6 @@ static void __svc_rdma_free(struct work_struct *work) if (rdma->sc_ctxt_used != 0) pr_err("svcrdma: ctxt still in use? (%d)\n", rdma->sc_ctxt_used); - if (atomic_read(&rdma->sc_dma_used) != 0) - pr_err("svcrdma: dma still in use? (%d)\n", - atomic_read(&rdma->sc_dma_used)); /* Final put of backchannel client transport */ if (xprt->xpt_bc_xprt) { @@ -1339,15 +1313,13 @@ int svc_rdma_send(struct svcxprt_rdma *xprt, struct ib_send_wr *wr) /* If the SQ is full, wait until an SQ entry is available */ while (1) { - spin_lock_bh(&xprt->sc_lock); - if (xprt->sc_sq_depth < atomic_read(&xprt->sc_sq_count) + wr_count) { - spin_unlock_bh(&xprt->sc_lock); + if ((atomic_sub_return(wr_count, &xprt->sc_sq_avail) < 0)) { atomic_inc(&rdma_stat_sq_starve); /* Wait until SQ WR available if SQ still full */ + atomic_add(wr_count, &xprt->sc_sq_avail); wait_event(xprt->sc_send_wait, - atomic_read(&xprt->sc_sq_count) < - xprt->sc_sq_depth); + atomic_read(&xprt->sc_sq_avail) > wr_count); if (test_bit(XPT_CLOSE, &xprt->sc_xprt.xpt_flags)) return -ENOTCONN; continue; @@ -1357,21 +1329,17 @@ int svc_rdma_send(struct svcxprt_rdma *xprt, struct ib_send_wr *wr) svc_xprt_get(&xprt->sc_xprt); /* Bump used SQ WR count and post */ - atomic_add(wr_count, &xprt->sc_sq_count); ret = ib_post_send(xprt->sc_qp, wr, &bad_wr); if (ret) { set_bit(XPT_CLOSE, &xprt->sc_xprt.xpt_flags); - atomic_sub(wr_count, &xprt->sc_sq_count); for (i = 0; i < wr_count; i ++) svc_xprt_put(&xprt->sc_xprt); - dprintk("svcrdma: failed to post SQ WR rc=%d, " - "sc_sq_count=%d, sc_sq_depth=%d\n", - ret, atomic_read(&xprt->sc_sq_count), - xprt->sc_sq_depth); - } - spin_unlock_bh(&xprt->sc_lock); - if (ret) + dprintk("svcrdma: failed to post SQ WR rc=%d\n", ret); + dprintk(" sc_sq_avail=%d, sc_sq_depth=%d\n", + atomic_read(&xprt->sc_sq_avail), + xprt->sc_sq_depth); wake_up(&xprt->sc_send_wait); + } break; } return ret; |