diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-28 15:39:09 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-28 15:39:09 -0800 |
commit | 8313064c2e75542201e557e2b496668811c2484a (patch) | |
tree | 224207ba2b05b58f3166da9d6dfb6f80366fa9f1 /net/sunrpc/xprtrdma/svc_rdma_transport.c | |
parent | b2deee2dc06db7cdf99b84346e69bdb9db9baa85 (diff) | |
parent | ff7d11797e728efbd1da8cfaa6f7c37585784ca5 (diff) |
Merge tag 'nfsd-4.11' of git://linux-nfs.org/~bfields/linux
Pull nfsd updates from Bruce Fields:
"The nfsd update this round is mainly a lot of miscellaneous cleanups
and bugfixes.
A couple changes could theoretically break working setups on upgrade.
I don't expect complaints in practice, but they seem worth calling out
just in case:
- NFS security labels are now off by default; a new security_label
export flag reenables it per export. But, having them on by default
is a disaster, as it generally only makes sense if all your clients
and servers have similar enough selinux policies. Thanks to Jason
Tibbitts for pointing this out.
- NFSv4/UDP support is off. It was never really supported, and the
spec explicitly forbids it. We only ever left it on out of
laziness; thanks to Jeff Layton for finally fixing that"
* tag 'nfsd-4.11' of git://linux-nfs.org/~bfields/linux: (34 commits)
nfsd: Fix display of the version string
nfsd: fix configuration of supported minor versions
sunrpc: don't register UDP port with rpcbind when version needs congestion control
nfs/nfsd/sunrpc: enforce transport requirements for NFSv4
sunrpc: flag transports as having congestion control
sunrpc: turn bitfield flags in svc_version into bools
nfsd: remove superfluous KERN_INFO
nfsd: special case truncates some more
nfsd: minor nfsd_setattr cleanup
NFSD: Reserve adequate space for LOCKT operation
NFSD: Get response size before operation for all RPCs
nfsd/callback: Drop a useless data copy when comparing sessionid
nfsd/callback: skip the callback tag
nfsd/callback: Cleanup callback cred on shutdown
nfsd/idmap: return nfserr_inval for 0-length names
SUNRPC/Cache: Always treat the invalid cache as unexpired
SUNRPC: Drop all entries from cache_detail when cache_purge()
svcrdma: Poll CQs in "workqueue" mode
svcrdma: Combine list fields in struct svc_rdma_op_ctxt
svcrdma: Remove unused sc_dto_q field
...
Diffstat (limited to 'net/sunrpc/xprtrdma/svc_rdma_transport.c')
-rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_transport.c | 69 |
1 files changed, 37 insertions, 32 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c index 39652d390a9c..c13a5c35ce14 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c @@ -157,8 +157,7 @@ static struct svc_rdma_op_ctxt *alloc_ctxt(struct svcxprt_rdma *xprt, ctxt = kmalloc(sizeof(*ctxt), flags); if (ctxt) { ctxt->xprt = xprt; - INIT_LIST_HEAD(&ctxt->free); - INIT_LIST_HEAD(&ctxt->dto_q); + INIT_LIST_HEAD(&ctxt->list); } return ctxt; } @@ -180,7 +179,7 @@ static bool svc_rdma_prealloc_ctxts(struct svcxprt_rdma *xprt) dprintk("svcrdma: No memory for RDMA ctxt\n"); return false; } - list_add(&ctxt->free, &xprt->sc_ctxts); + list_add(&ctxt->list, &xprt->sc_ctxts); } return true; } @@ -189,15 +188,15 @@ struct svc_rdma_op_ctxt *svc_rdma_get_context(struct svcxprt_rdma *xprt) { struct svc_rdma_op_ctxt *ctxt = NULL; - spin_lock_bh(&xprt->sc_ctxt_lock); + spin_lock(&xprt->sc_ctxt_lock); xprt->sc_ctxt_used++; if (list_empty(&xprt->sc_ctxts)) goto out_empty; ctxt = list_first_entry(&xprt->sc_ctxts, - struct svc_rdma_op_ctxt, free); - list_del_init(&ctxt->free); - spin_unlock_bh(&xprt->sc_ctxt_lock); + struct svc_rdma_op_ctxt, list); + list_del(&ctxt->list); + spin_unlock(&xprt->sc_ctxt_lock); out: ctxt->count = 0; @@ -209,15 +208,15 @@ out_empty: /* Either pre-allocation missed the mark, or send * queue accounting is broken. */ - spin_unlock_bh(&xprt->sc_ctxt_lock); + spin_unlock(&xprt->sc_ctxt_lock); ctxt = alloc_ctxt(xprt, GFP_NOIO); if (ctxt) goto out; - spin_lock_bh(&xprt->sc_ctxt_lock); + spin_lock(&xprt->sc_ctxt_lock); xprt->sc_ctxt_used--; - spin_unlock_bh(&xprt->sc_ctxt_lock); + spin_unlock(&xprt->sc_ctxt_lock); WARN_ONCE(1, "svcrdma: empty RDMA ctxt list?\n"); return NULL; } @@ -254,10 +253,10 @@ void svc_rdma_put_context(struct svc_rdma_op_ctxt *ctxt, int free_pages) for (i = 0; i < ctxt->count; i++) put_page(ctxt->pages[i]); - spin_lock_bh(&xprt->sc_ctxt_lock); + spin_lock(&xprt->sc_ctxt_lock); xprt->sc_ctxt_used--; - list_add(&ctxt->free, &xprt->sc_ctxts); - spin_unlock_bh(&xprt->sc_ctxt_lock); + list_add(&ctxt->list, &xprt->sc_ctxts); + spin_unlock(&xprt->sc_ctxt_lock); } static void svc_rdma_destroy_ctxts(struct svcxprt_rdma *xprt) @@ -266,8 +265,8 @@ static void svc_rdma_destroy_ctxts(struct svcxprt_rdma *xprt) struct svc_rdma_op_ctxt *ctxt; ctxt = list_first_entry(&xprt->sc_ctxts, - struct svc_rdma_op_ctxt, free); - list_del(&ctxt->free); + struct svc_rdma_op_ctxt, list); + list_del(&ctxt->list); kfree(ctxt); } } @@ -404,7 +403,7 @@ static void svc_rdma_wc_receive(struct ib_cq *cq, struct ib_wc *wc) /* All wc fields are now known to be valid */ ctxt->byte_len = wc->byte_len; spin_lock(&xprt->sc_rq_dto_lock); - list_add_tail(&ctxt->dto_q, &xprt->sc_rq_dto_q); + list_add_tail(&ctxt->list, &xprt->sc_rq_dto_q); spin_unlock(&xprt->sc_rq_dto_lock); set_bit(XPT_DATA, &xprt->sc_xprt.xpt_flags); @@ -525,7 +524,7 @@ void svc_rdma_wc_read(struct ib_cq *cq, struct ib_wc *wc) read_hdr = ctxt->read_hdr; spin_lock(&xprt->sc_rq_dto_lock); - list_add_tail(&read_hdr->dto_q, + list_add_tail(&read_hdr->list, &xprt->sc_read_complete_q); spin_unlock(&xprt->sc_rq_dto_lock); @@ -557,7 +556,6 @@ static struct svcxprt_rdma *rdma_create_xprt(struct svc_serv *serv, return NULL; svc_xprt_init(&init_net, &svc_rdma_class, &cma_xprt->sc_xprt, serv); INIT_LIST_HEAD(&cma_xprt->sc_accept_q); - INIT_LIST_HEAD(&cma_xprt->sc_dto_q); INIT_LIST_HEAD(&cma_xprt->sc_rq_dto_q); INIT_LIST_HEAD(&cma_xprt->sc_read_complete_q); INIT_LIST_HEAD(&cma_xprt->sc_frmr_q); @@ -571,6 +569,14 @@ static struct svcxprt_rdma *rdma_create_xprt(struct svc_serv *serv, spin_lock_init(&cma_xprt->sc_ctxt_lock); spin_lock_init(&cma_xprt->sc_map_lock); + /* + * Note that this implies that the underlying transport support + * has some form of congestion control (see RFC 7530 section 3.1 + * paragraph 2). For now, we assume that all supported RDMA + * transports are suitable here. + */ + set_bit(XPT_CONG_CTRL, &cma_xprt->sc_xprt.xpt_flags); + if (listener) set_bit(XPT_LISTENER, &cma_xprt->sc_xprt.xpt_flags); @@ -923,14 +929,14 @@ struct svc_rdma_fastreg_mr *svc_rdma_get_frmr(struct svcxprt_rdma *rdma) { struct svc_rdma_fastreg_mr *frmr = NULL; - spin_lock_bh(&rdma->sc_frmr_q_lock); + spin_lock(&rdma->sc_frmr_q_lock); if (!list_empty(&rdma->sc_frmr_q)) { frmr = list_entry(rdma->sc_frmr_q.next, struct svc_rdma_fastreg_mr, frmr_list); list_del_init(&frmr->frmr_list); frmr->sg_nents = 0; } - spin_unlock_bh(&rdma->sc_frmr_q_lock); + spin_unlock(&rdma->sc_frmr_q_lock); if (frmr) return frmr; @@ -943,10 +949,10 @@ 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); - spin_lock_bh(&rdma->sc_frmr_q_lock); + spin_lock(&rdma->sc_frmr_q_lock); WARN_ON_ONCE(!list_empty(&frmr->frmr_list)); list_add(&frmr->frmr_list, &rdma->sc_frmr_q); - spin_unlock_bh(&rdma->sc_frmr_q_lock); + spin_unlock(&rdma->sc_frmr_q_lock); } } @@ -1002,6 +1008,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) newxprt->sc_max_req_size = svcrdma_max_req_size; newxprt->sc_max_requests = min_t(u32, dev->attrs.max_qp_wr, svcrdma_max_requests); + newxprt->sc_fc_credits = cpu_to_be32(newxprt->sc_max_requests); newxprt->sc_max_bc_requests = min_t(u32, dev->attrs.max_qp_wr, svcrdma_max_bc_requests); newxprt->sc_rq_depth = newxprt->sc_max_requests + @@ -1027,13 +1034,13 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) goto errout; } newxprt->sc_sq_cq = ib_alloc_cq(dev, newxprt, newxprt->sc_sq_depth, - 0, IB_POLL_SOFTIRQ); + 0, IB_POLL_WORKQUEUE); if (IS_ERR(newxprt->sc_sq_cq)) { dprintk("svcrdma: error creating SQ CQ for connect request\n"); goto errout; } newxprt->sc_rq_cq = ib_alloc_cq(dev, newxprt, newxprt->sc_rq_depth, - 0, IB_POLL_SOFTIRQ); + 0, IB_POLL_WORKQUEUE); if (IS_ERR(newxprt->sc_rq_cq)) { dprintk("svcrdma: error creating RQ CQ for connect request\n"); goto errout; @@ -1213,20 +1220,18 @@ static void __svc_rdma_free(struct work_struct *work) */ while (!list_empty(&rdma->sc_read_complete_q)) { struct svc_rdma_op_ctxt *ctxt; - ctxt = list_entry(rdma->sc_read_complete_q.next, - struct svc_rdma_op_ctxt, - dto_q); - list_del_init(&ctxt->dto_q); + ctxt = list_first_entry(&rdma->sc_read_complete_q, + struct svc_rdma_op_ctxt, list); + list_del(&ctxt->list); svc_rdma_put_context(ctxt, 1); } /* Destroy queued, but not processed recv completions */ while (!list_empty(&rdma->sc_rq_dto_q)) { struct svc_rdma_op_ctxt *ctxt; - ctxt = list_entry(rdma->sc_rq_dto_q.next, - struct svc_rdma_op_ctxt, - dto_q); - list_del_init(&ctxt->dto_q); + ctxt = list_first_entry(&rdma->sc_rq_dto_q, + struct svc_rdma_op_ctxt, list); + list_del(&ctxt->list); svc_rdma_put_context(ctxt, 1); } |