summaryrefslogtreecommitdiff
path: root/net/sunrpc/xprtrdma/svc_rdma_sendto.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/sunrpc/xprtrdma/svc_rdma_sendto.c')
-rw-r--r--net/sunrpc/xprtrdma/svc_rdma_sendto.c96
1 files changed, 54 insertions, 42 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
index c6644cca52c5..1a49b7f02041 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
@@ -113,13 +113,6 @@
static void svc_rdma_wc_send(struct ib_cq *cq, struct ib_wc *wc);
-static void svc_rdma_send_cid_init(struct svcxprt_rdma *rdma,
- struct rpc_rdma_cid *cid)
-{
- cid->ci_queue_id = rdma->sc_sq_cq->res.id;
- cid->ci_completion_id = atomic_inc_return(&rdma->sc_completion_ids);
-}
-
static struct svc_rdma_send_ctxt *
svc_rdma_send_ctxt_alloc(struct svcxprt_rdma *rdma)
{
@@ -129,7 +122,7 @@ svc_rdma_send_ctxt_alloc(struct svcxprt_rdma *rdma)
void *buffer;
int i;
- ctxt = kmalloc_node(struct_size(ctxt, sc_sges, rdma->sc_max_send_sges),
+ ctxt = kzalloc_node(struct_size(ctxt, sc_sges, rdma->sc_max_send_sges),
GFP_KERNEL, node);
if (!ctxt)
goto fail0;
@@ -143,6 +136,7 @@ svc_rdma_send_ctxt_alloc(struct svcxprt_rdma *rdma)
svc_rdma_send_cid_init(rdma, &ctxt->sc_cid);
+ ctxt->sc_rdma = rdma;
ctxt->sc_send_wr.next = NULL;
ctxt->sc_send_wr.wr_cqe = &ctxt->sc_cqe;
ctxt->sc_send_wr.sg_list = ctxt->sc_sges;
@@ -200,10 +194,11 @@ struct svc_rdma_send_ctxt *svc_rdma_send_ctxt_get(struct svcxprt_rdma *rdma)
spin_lock(&rdma->sc_send_lock);
node = llist_del_first(&rdma->sc_send_ctxts);
+ spin_unlock(&rdma->sc_send_lock);
if (!node)
goto out_empty;
+
ctxt = llist_entry(node, struct svc_rdma_send_ctxt, sc_node);
- spin_unlock(&rdma->sc_send_lock);
out:
rpcrdma_set_xdrlen(&ctxt->sc_hdrbuf, 0);
@@ -216,22 +211,14 @@ out:
return ctxt;
out_empty:
- spin_unlock(&rdma->sc_send_lock);
ctxt = svc_rdma_send_ctxt_alloc(rdma);
if (!ctxt)
return NULL;
goto out;
}
-/**
- * svc_rdma_send_ctxt_put - Return send_ctxt to free list
- * @rdma: controlling svcxprt_rdma
- * @ctxt: object to return to the free list
- *
- * Pages left in sc_pages are DMA unmapped and released.
- */
-void svc_rdma_send_ctxt_put(struct svcxprt_rdma *rdma,
- struct svc_rdma_send_ctxt *ctxt)
+static void svc_rdma_send_ctxt_release(struct svcxprt_rdma *rdma,
+ struct svc_rdma_send_ctxt *ctxt)
{
struct ib_device *device = rdma->sc_cm_id->device;
unsigned int i;
@@ -243,18 +230,40 @@ void svc_rdma_send_ctxt_put(struct svcxprt_rdma *rdma,
* remains mapped until @ctxt is destroyed.
*/
for (i = 1; i < ctxt->sc_send_wr.num_sge; i++) {
+ trace_svcrdma_dma_unmap_page(&ctxt->sc_cid,
+ ctxt->sc_sges[i].addr,
+ ctxt->sc_sges[i].length);
ib_dma_unmap_page(device,
ctxt->sc_sges[i].addr,
ctxt->sc_sges[i].length,
DMA_TO_DEVICE);
- trace_svcrdma_dma_unmap_page(rdma,
- ctxt->sc_sges[i].addr,
- ctxt->sc_sges[i].length);
}
llist_add(&ctxt->sc_node, &rdma->sc_send_ctxts);
}
+static void svc_rdma_send_ctxt_put_async(struct work_struct *work)
+{
+ struct svc_rdma_send_ctxt *ctxt;
+
+ ctxt = container_of(work, struct svc_rdma_send_ctxt, sc_work);
+ svc_rdma_send_ctxt_release(ctxt->sc_rdma, ctxt);
+}
+
+/**
+ * svc_rdma_send_ctxt_put - Return send_ctxt to free list
+ * @rdma: controlling svcxprt_rdma
+ * @ctxt: object to return to the free list
+ *
+ * Pages left in sc_pages are DMA unmapped and released.
+ */
+void svc_rdma_send_ctxt_put(struct svcxprt_rdma *rdma,
+ struct svc_rdma_send_ctxt *ctxt)
+{
+ INIT_WORK(&ctxt->sc_work, svc_rdma_send_ctxt_put_async);
+ queue_work(svcrdma_wq, &ctxt->sc_work);
+}
+
/**
* svc_rdma_wake_send_waiters - manage Send Queue accounting
* @rdma: controlling transport
@@ -289,7 +298,7 @@ static void svc_rdma_wc_send(struct ib_cq *cq, struct ib_wc *wc)
if (unlikely(wc->status != IB_WC_SUCCESS))
goto flushed;
- trace_svcrdma_wc_send(wc, &ctxt->sc_cid);
+ trace_svcrdma_wc_send(&ctxt->sc_cid);
svc_rdma_send_ctxt_put(rdma, ctxt);
return;
@@ -327,13 +336,13 @@ int svc_rdma_send(struct svcxprt_rdma *rdma, struct svc_rdma_send_ctxt *ctxt)
while (1) {
if ((atomic_dec_return(&rdma->sc_sq_avail) < 0)) {
percpu_counter_inc(&svcrdma_stat_sq_starve);
- trace_svcrdma_sq_full(rdma);
+ trace_svcrdma_sq_full(rdma, &ctxt->sc_cid);
atomic_inc(&rdma->sc_sq_avail);
wait_event(rdma->sc_send_wait,
atomic_read(&rdma->sc_sq_avail) > 1);
if (test_bit(XPT_CLOSE, &rdma->sc_xprt.xpt_flags))
return -ENOTCONN;
- trace_svcrdma_sq_retry(rdma);
+ trace_svcrdma_sq_retry(rdma, &ctxt->sc_cid);
continue;
}
@@ -344,7 +353,7 @@ int svc_rdma_send(struct svcxprt_rdma *rdma, struct svc_rdma_send_ctxt *ctxt)
return 0;
}
- trace_svcrdma_sq_post_err(rdma, ret);
+ trace_svcrdma_sq_post_err(rdma, &ctxt->sc_cid, ret);
svc_xprt_deferred_close(&rdma->sc_xprt);
wake_up(&rdma->sc_send_wait);
return ret;
@@ -534,14 +543,14 @@ static int svc_rdma_page_dma_map(void *data, struct page *page,
if (ib_dma_mapping_error(dev, dma_addr))
goto out_maperr;
- trace_svcrdma_dma_map_page(rdma, dma_addr, len);
+ trace_svcrdma_dma_map_page(&ctxt->sc_cid, dma_addr, len);
ctxt->sc_sges[ctxt->sc_cur_sge_no].addr = dma_addr;
ctxt->sc_sges[ctxt->sc_cur_sge_no].length = len;
ctxt->sc_send_wr.num_sge++;
return 0;
out_maperr:
- trace_svcrdma_dma_map_err(rdma, dma_addr, len);
+ trace_svcrdma_dma_map_err(&ctxt->sc_cid, dma_addr, len);
return -EIO;
}
@@ -653,7 +662,7 @@ static int svc_rdma_xb_count_sges(const struct xdr_buf *xdr,
* svc_rdma_pull_up_needed - Determine whether to use pull-up
* @rdma: controlling transport
* @sctxt: send_ctxt for the Send WR
- * @rctxt: Write and Reply chunks provided by client
+ * @write_pcl: Write chunk list provided by client
* @xdr: xdr_buf containing RPC message to transmit
*
* Returns:
@@ -662,7 +671,7 @@ static int svc_rdma_xb_count_sges(const struct xdr_buf *xdr,
*/
static bool svc_rdma_pull_up_needed(const struct svcxprt_rdma *rdma,
const struct svc_rdma_send_ctxt *sctxt,
- const struct svc_rdma_recv_ctxt *rctxt,
+ const struct svc_rdma_pcl *write_pcl,
const struct xdr_buf *xdr)
{
/* Resources needed for the transport header */
@@ -672,7 +681,7 @@ static bool svc_rdma_pull_up_needed(const struct svcxprt_rdma *rdma,
};
int ret;
- ret = pcl_process_nonpayloads(&rctxt->rc_write_pcl, xdr,
+ ret = pcl_process_nonpayloads(write_pcl, xdr,
svc_rdma_xb_count_sges, &args);
if (ret < 0)
return false;
@@ -728,7 +737,7 @@ static int svc_rdma_xb_linearize(const struct xdr_buf *xdr,
* svc_rdma_pull_up_reply_msg - Copy Reply into a single buffer
* @rdma: controlling transport
* @sctxt: send_ctxt for the Send WR; xprt hdr is already prepared
- * @rctxt: Write and Reply chunks provided by client
+ * @write_pcl: Write chunk list provided by client
* @xdr: prepared xdr_buf containing RPC message
*
* The device is not capable of sending the reply directly.
@@ -743,7 +752,7 @@ static int svc_rdma_xb_linearize(const struct xdr_buf *xdr,
*/
static int svc_rdma_pull_up_reply_msg(const struct svcxprt_rdma *rdma,
struct svc_rdma_send_ctxt *sctxt,
- const struct svc_rdma_recv_ctxt *rctxt,
+ const struct svc_rdma_pcl *write_pcl,
const struct xdr_buf *xdr)
{
struct svc_rdma_pullup_data args = {
@@ -751,7 +760,7 @@ static int svc_rdma_pull_up_reply_msg(const struct svcxprt_rdma *rdma,
};
int ret;
- ret = pcl_process_nonpayloads(&rctxt->rc_write_pcl, xdr,
+ ret = pcl_process_nonpayloads(write_pcl, xdr,
svc_rdma_xb_linearize, &args);
if (ret < 0)
return ret;
@@ -764,7 +773,8 @@ static int svc_rdma_pull_up_reply_msg(const struct svcxprt_rdma *rdma,
/* svc_rdma_map_reply_msg - DMA map the buffer holding RPC message
* @rdma: controlling transport
* @sctxt: send_ctxt for the Send WR
- * @rctxt: Write and Reply chunks provided by client
+ * @write_pcl: Write chunk list provided by client
+ * @reply_pcl: Reply chunk provided by client
* @xdr: prepared xdr_buf containing RPC message
*
* Returns:
@@ -776,7 +786,8 @@ static int svc_rdma_pull_up_reply_msg(const struct svcxprt_rdma *rdma,
*/
int svc_rdma_map_reply_msg(struct svcxprt_rdma *rdma,
struct svc_rdma_send_ctxt *sctxt,
- const struct svc_rdma_recv_ctxt *rctxt,
+ const struct svc_rdma_pcl *write_pcl,
+ const struct svc_rdma_pcl *reply_pcl,
const struct xdr_buf *xdr)
{
struct svc_rdma_map_data args = {
@@ -789,18 +800,18 @@ int svc_rdma_map_reply_msg(struct svcxprt_rdma *rdma,
sctxt->sc_sges[0].length = sctxt->sc_hdrbuf.len;
/* If there is a Reply chunk, nothing follows the transport
- * header, and we're done here.
+ * header, so there is nothing to map.
*/
- if (!pcl_is_empty(&rctxt->rc_reply_pcl))
+ if (!pcl_is_empty(reply_pcl))
return 0;
/* For pull-up, svc_rdma_send() will sync the transport header.
* No additional DMA mapping is necessary.
*/
- if (svc_rdma_pull_up_needed(rdma, sctxt, rctxt, xdr))
- return svc_rdma_pull_up_reply_msg(rdma, sctxt, rctxt, xdr);
+ if (svc_rdma_pull_up_needed(rdma, sctxt, write_pcl, xdr))
+ return svc_rdma_pull_up_reply_msg(rdma, sctxt, write_pcl, xdr);
- return pcl_process_nonpayloads(&rctxt->rc_write_pcl, xdr,
+ return pcl_process_nonpayloads(write_pcl, xdr,
svc_rdma_xb_dma_map, &args);
}
@@ -848,7 +859,8 @@ static int svc_rdma_send_reply_msg(struct svcxprt_rdma *rdma,
{
int ret;
- ret = svc_rdma_map_reply_msg(rdma, sctxt, rctxt, &rqstp->rq_res);
+ ret = svc_rdma_map_reply_msg(rdma, sctxt, &rctxt->rc_write_pcl,
+ &rctxt->rc_reply_pcl, &rqstp->rq_res);
if (ret < 0)
return ret;
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-12 15:22:24 +0300