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Diffstat (limited to 'net/sunrpc/xprtrdma/svc_rdma_transport.c')
-rw-r--r--net/sunrpc/xprtrdma/svc_rdma_transport.c96
1 files changed, 52 insertions, 44 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 9df1eadc912..e7323fbbd34 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -1,4 +1,5 @@
/*
+ * Copyright (c) 2014 Open Grid Computing, Inc. All rights reserved.
* Copyright (c) 2005-2007 Network Appliance, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
@@ -42,6 +43,7 @@
#include <linux/sunrpc/svc_xprt.h>
#include <linux/sunrpc/debug.h>
#include <linux/sunrpc/rpc_rdma.h>
+#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
@@ -49,6 +51,8 @@
#include <rdma/ib_verbs.h>
#include <rdma/rdma_cm.h>
#include <linux/sunrpc/svc_rdma.h>
+#include <linux/export.h>
+#include "xprt_rdma.h"
#define RPCDBG_FACILITY RPCDBG_SVCXPRT
@@ -62,6 +66,7 @@ static void dto_tasklet_func(unsigned long data);
static void svc_rdma_detach(struct svc_xprt *xprt);
static void svc_rdma_free(struct svc_xprt *xprt);
static int svc_rdma_has_wspace(struct svc_xprt *xprt);
+static int svc_rdma_secure_port(struct svc_rqst *);
static void rq_cq_reap(struct svcxprt_rdma *xprt);
static void sq_cq_reap(struct svcxprt_rdma *xprt);
@@ -79,6 +84,7 @@ static struct svc_xprt_ops svc_rdma_ops = {
.xpo_prep_reply_hdr = svc_rdma_prep_reply_hdr,
.xpo_has_wspace = svc_rdma_has_wspace,
.xpo_accept = svc_rdma_accept,
+ .xpo_secure_port = svc_rdma_secure_port,
};
struct svc_xprt_class svc_rdma_class = {
@@ -88,12 +94,6 @@ struct svc_xprt_class svc_rdma_class = {
.xcl_max_payload = RPCSVC_MAXPAYLOAD_TCP,
};
-/* WR context cache. Created in svc_rdma.c */
-extern struct kmem_cache *svc_rdma_ctxt_cachep;
-
-/* Workqueue created in svc_rdma.c */
-extern struct workqueue_struct *svc_rdma_wq;
-
struct svc_rdma_op_ctxt *svc_rdma_get_context(struct svcxprt_rdma *xprt)
{
struct svc_rdma_op_ctxt *ctxt;
@@ -148,9 +148,6 @@ void svc_rdma_put_context(struct svc_rdma_op_ctxt *ctxt, int free_pages)
atomic_dec(&xprt->sc_ctxt_used);
}
-/* Temporary NFS request map cache. Created in svc_rdma.c */
-extern struct kmem_cache *svc_rdma_map_cachep;
-
/*
* Temporary NFS req mappings are shared across all transport
* instances. These are short lived and should be bounded by the number
@@ -166,7 +163,6 @@ struct svc_rdma_req_map *svc_rdma_get_req_map(void)
schedule_timeout_uninterruptible(msecs_to_jiffies(500));
}
map->count = 0;
- map->frmr = NULL;
return map;
}
@@ -333,7 +329,7 @@ static void rq_cq_reap(struct svcxprt_rdma *xprt)
}
/*
- * Processs a completion context
+ * Process a completion context
*/
static void process_context(struct svcxprt_rdma *xprt,
struct svc_rdma_op_ctxt *ctxt)
@@ -342,22 +338,21 @@ static void process_context(struct svcxprt_rdma *xprt,
switch (ctxt->wr_op) {
case IB_WR_SEND:
- if (test_bit(RDMACTXT_F_FAST_UNREG, &ctxt->flags))
- svc_rdma_put_frmr(xprt, ctxt->frmr);
+ BUG_ON(ctxt->frmr);
svc_rdma_put_context(ctxt, 1);
break;
case IB_WR_RDMA_WRITE:
+ BUG_ON(ctxt->frmr);
svc_rdma_put_context(ctxt, 0);
break;
case IB_WR_RDMA_READ:
case IB_WR_RDMA_READ_WITH_INV:
+ svc_rdma_put_frmr(xprt, ctxt->frmr);
if (test_bit(RDMACTXT_F_LAST_CTXT, &ctxt->flags)) {
struct svc_rdma_op_ctxt *read_hdr = ctxt->read_hdr;
BUG_ON(!read_hdr);
- if (test_bit(RDMACTXT_F_FAST_UNREG, &ctxt->flags))
- svc_rdma_put_frmr(xprt, ctxt->frmr);
spin_lock_bh(&xprt->sc_rq_dto_lock);
set_bit(XPT_DATA, &xprt->sc_xprt.xpt_flags);
list_add_tail(&read_hdr->dto_q,
@@ -369,6 +364,7 @@ static void process_context(struct svcxprt_rdma *xprt,
break;
default:
+ BUG_ON(1);
printk(KERN_ERR "svcrdma: unexpected completion type, "
"opcode=%d\n",
ctxt->wr_op);
@@ -384,29 +380,42 @@ static void process_context(struct svcxprt_rdma *xprt,
static void sq_cq_reap(struct svcxprt_rdma *xprt)
{
struct svc_rdma_op_ctxt *ctxt = NULL;
- struct ib_wc wc;
+ struct ib_wc wc_a[6];
+ struct ib_wc *wc;
struct ib_cq *cq = xprt->sc_sq_cq;
int ret;
+ memset(wc_a, 0, sizeof(wc_a));
+
if (!test_and_clear_bit(RDMAXPRT_SQ_PENDING, &xprt->sc_flags))
return;
ib_req_notify_cq(xprt->sc_sq_cq, IB_CQ_NEXT_COMP);
atomic_inc(&rdma_stat_sq_poll);
- while ((ret = ib_poll_cq(cq, 1, &wc)) > 0) {
- if (wc.status != IB_WC_SUCCESS)
- /* Close the transport */
- set_bit(XPT_CLOSE, &xprt->sc_xprt.xpt_flags);
+ while ((ret = ib_poll_cq(cq, ARRAY_SIZE(wc_a), wc_a)) > 0) {
+ int i;
- /* Decrement used SQ WR count */
- atomic_dec(&xprt->sc_sq_count);
- wake_up(&xprt->sc_send_wait);
+ for (i = 0; i < ret; i++) {
+ wc = &wc_a[i];
+ if (wc->status != IB_WC_SUCCESS) {
+ dprintk("svcrdma: sq wc err status %d\n",
+ wc->status);
- ctxt = (struct svc_rdma_op_ctxt *)(unsigned long)wc.wr_id;
- if (ctxt)
- process_context(xprt, ctxt);
+ /* Close the transport */
+ set_bit(XPT_CLOSE, &xprt->sc_xprt.xpt_flags);
+ }
- svc_xprt_put(&xprt->sc_xprt);
+ /* Decrement used SQ WR count */
+ atomic_dec(&xprt->sc_sq_count);
+ wake_up(&xprt->sc_send_wait);
+
+ ctxt = (struct svc_rdma_op_ctxt *)
+ (unsigned long)wc->wr_id;
+ if (ctxt)
+ process_context(xprt, ctxt);
+
+ svc_xprt_put(&xprt->sc_xprt);
+ }
}
if (ctxt)
@@ -451,7 +460,7 @@ static struct svcxprt_rdma *rdma_create_xprt(struct svc_serv *serv,
if (!cma_xprt)
return NULL;
- svc_xprt_init(&svc_rdma_class, &cma_xprt->sc_xprt, serv);
+ 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);
@@ -483,8 +492,7 @@ struct page *svc_rdma_get_page(void)
while ((page = alloc_page(GFP_KERNEL)) == NULL) {
/* If we can't get memory, wait a bit and try again */
- printk(KERN_INFO "svcrdma: out of memory...retrying in 1000 "
- "jiffies.\n");
+ printk(KERN_INFO "svcrdma: out of memory...retrying in 1s\n");
schedule_timeout_uninterruptible(msecs_to_jiffies(1000));
}
return page;
@@ -584,10 +592,6 @@ static void handle_connect_req(struct rdma_cm_id *new_cma_id, size_t client_ird)
list_add_tail(&newxprt->sc_accept_q, &listen_xprt->sc_accept_q);
spin_unlock_bh(&listen_xprt->sc_lock);
- /*
- * Can't use svc_xprt_received here because we are not on a
- * rqstp thread
- */
set_bit(XPT_CONN, &listen_xprt->sc_xprt.xpt_flags);
svc_xprt_enqueue(&listen_xprt->sc_xprt);
}
@@ -695,7 +699,8 @@ static struct svc_xprt *svc_rdma_create(struct svc_serv *serv,
return ERR_PTR(-ENOMEM);
xprt = &cma_xprt->sc_xprt;
- listen_id = rdma_create_id(rdma_listen_handler, cma_xprt, RDMA_PS_TCP);
+ listen_id = rdma_create_id(rdma_listen_handler, cma_xprt, RDMA_PS_TCP,
+ IB_QPT_RC);
if (IS_ERR(listen_id)) {
ret = PTR_ERR(listen_id);
dprintk("svcrdma: rdma_create_id failed = %d\n", ret);
@@ -1003,7 +1008,11 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt)
need_dma_mr = 0;
break;
case RDMA_TRANSPORT_IB:
- if (!(devattr.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)) {
+ if (!(newxprt->sc_dev_caps & SVCRDMA_DEVCAP_FAST_REG)) {
+ need_dma_mr = 1;
+ dma_mr_acc = IB_ACCESS_LOCAL_WRITE;
+ } else if (!(devattr.device_cap_flags &
+ IB_DEVICE_LOCAL_DMA_LKEY)) {
need_dma_mr = 1;
dma_mr_acc = IB_ACCESS_LOCAL_WRITE;
} else
@@ -1200,14 +1209,7 @@ static int svc_rdma_has_wspace(struct svc_xprt *xprt)
container_of(xprt, struct svcxprt_rdma, sc_xprt);
/*
- * If there are fewer SQ WR available than required to send a
- * simple response, return false.
- */
- if ((rdma->sc_sq_depth - atomic_read(&rdma->sc_sq_count) < 3))
- return 0;
-
- /*
- * ...or there are already waiters on the SQ,
+ * If there are already waiters on the SQ,
* return false.
*/
if (waitqueue_active(&rdma->sc_send_wait))
@@ -1217,6 +1219,11 @@ static int svc_rdma_has_wspace(struct svc_xprt *xprt)
return 1;
}
+static int svc_rdma_secure_port(struct svc_rqst *rqstp)
+{
+ return 1;
+}
+
/*
* Attempt to register the kvec representing the RPC memory with the
* device.
@@ -1335,6 +1342,7 @@ void svc_rdma_send_error(struct svcxprt_rdma *xprt, struct rpcrdma_msg *rmsgp,
p, 0, length, DMA_FROM_DEVICE);
if (ib_dma_mapping_error(xprt->sc_cm_id->device, ctxt->sge[0].addr)) {
put_page(p);
+ svc_rdma_put_context(ctxt, 1);
return;
}
atomic_inc(&xprt->sc_dma_used);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-21 06:50:36 +0000