}
if (!(fattr->valid & NFS_ATTR_FATTR)) {
- error = nfs_mod->rpc_ops->getattr(server, mount_info->mntfh, fattr, NULL);
+ error = nfs_mod->rpc_ops->getattr(server, mount_info->mntfh,
+ fattr, NULL, NULL);
if (error < 0) {
dprintk("nfs_create_server: getattr error = %d\n", -error);
goto error;
}
#ifdef CONFIG_PROC_FS
-static int nfs_server_list_open(struct inode *inode, struct file *file);
static void *nfs_server_list_start(struct seq_file *p, loff_t *pos);
static void *nfs_server_list_next(struct seq_file *p, void *v, loff_t *pos);
static void nfs_server_list_stop(struct seq_file *p, void *v);
.show = nfs_server_list_show,
};
-static const struct file_operations nfs_server_list_fops = {
- .open = nfs_server_list_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release_net,
-};
-
-static int nfs_volume_list_open(struct inode *inode, struct file *file);
static void *nfs_volume_list_start(struct seq_file *p, loff_t *pos);
static void *nfs_volume_list_next(struct seq_file *p, void *v, loff_t *pos);
static void nfs_volume_list_stop(struct seq_file *p, void *v);
.show = nfs_volume_list_show,
};
-static const struct file_operations nfs_volume_list_fops = {
- .open = nfs_volume_list_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release_net,
-};
-
-/*
- * open "/proc/fs/nfsfs/servers" which provides a summary of servers with which
- * we're dealing
- */
-static int nfs_server_list_open(struct inode *inode, struct file *file)
-{
- return seq_open_net(inode, file, &nfs_server_list_ops,
- sizeof(struct seq_net_private));
-}
-
/*
* set up the iterator to start reading from the server list and return the first item
*/
return 0;
}
-/*
- * open "/proc/fs/nfsfs/volumes" which provides a summary of extant volumes
- */
-static int nfs_volume_list_open(struct inode *inode, struct file *file)
-{
- return seq_open_net(inode, file, &nfs_volume_list_ops,
- sizeof(struct seq_net_private));
-}
-
/*
* set up the iterator to start reading from the volume list and return the first item
*/
goto error_0;
/* a file of servers with which we're dealing */
- p = proc_create("servers", S_IFREG|S_IRUGO,
- nn->proc_nfsfs, &nfs_server_list_fops);
+ p = proc_create_net("servers", S_IFREG|S_IRUGO, nn->proc_nfsfs,
+ &nfs_server_list_ops, sizeof(struct seq_net_private));
if (!p)
goto error_1;
/* a file of volumes that we have mounted */
- p = proc_create("volumes", S_IFREG|S_IRUGO,
- nn->proc_nfsfs, &nfs_volume_list_fops);
+ p = proc_create_net("volumes", S_IFREG|S_IRUGO, nn->proc_nfsfs,
+ &nfs_volume_list_ops, sizeof(struct seq_net_private));
if (!p)
goto error_1;
return 0;
/* SPDX-License-Identifier: GPL-2.0 */
/*
- * Copyright (c) 2017 Oracle. All rights reserved.
+ * Copyright (c) 2017, 2018 Oracle. All rights reserved.
+ *
+ * Trace point definitions for the "rpcrdma" subsystem.
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM rpcrdma
TRACE_EVENT(xprtrdma_post_recv,
TP_PROTO(
- const struct rpcrdma_rep *rep,
+ const struct ib_cqe *cqe
+ ),
+
+ TP_ARGS(cqe),
+
+ TP_STRUCT__entry(
+ __field(const void *, cqe)
+ ),
+
+ TP_fast_assign(
+ __entry->cqe = cqe;
+ ),
+
+ TP_printk("cqe=%p",
+ __entry->cqe
+ )
+ );
+
+ TRACE_EVENT(xprtrdma_post_recvs,
+ TP_PROTO(
+ const struct rpcrdma_xprt *r_xprt,
+ unsigned int count,
int status
),
- TP_ARGS(rep, status),
+ TP_ARGS(r_xprt, count, status),
TP_STRUCT__entry(
- __field(const void *, rep)
+ __field(const void *, r_xprt)
+ __field(unsigned int, count)
__field(int, status)
+ __field(int, posted)
+ __string(addr, rpcrdma_addrstr(r_xprt))
+ __string(port, rpcrdma_portstr(r_xprt))
),
TP_fast_assign(
- __entry->rep = rep;
+ __entry->r_xprt = r_xprt;
+ __entry->count = count;
__entry->status = status;
+ __entry->posted = r_xprt->rx_buf.rb_posted_receives;
+ __assign_str(addr, rpcrdma_addrstr(r_xprt));
+ __assign_str(port, rpcrdma_portstr(r_xprt));
),
- TP_printk("rep=%p status=%d",
- __entry->rep, __entry->status
+ TP_printk("peer=[%s]:%s r_xprt=%p: %u new recvs, %d active (rc %d)",
+ __get_str(addr), __get_str(port), __entry->r_xprt,
+ __entry->count, __entry->posted, __entry->status
)
);
TRACE_EVENT(xprtrdma_wc_receive,
TP_PROTO(
- const struct rpcrdma_rep *rep,
const struct ib_wc *wc
),
- TP_ARGS(rep, wc),
+ TP_ARGS(wc),
TP_STRUCT__entry(
- __field(const void *, rep)
- __field(unsigned int, byte_len)
+ __field(const void *, cqe)
+ __field(u32, byte_len)
__field(unsigned int, status)
- __field(unsigned int, vendor_err)
+ __field(u32, vendor_err)
),
TP_fast_assign(
- __entry->rep = rep;
- __entry->byte_len = wc->byte_len;
+ __entry->cqe = wc->wr_cqe;
__entry->status = wc->status;
- __entry->vendor_err = __entry->status ? wc->vendor_err : 0;
+ if (wc->status) {
+ __entry->byte_len = 0;
+ __entry->vendor_err = wc->vendor_err;
+ } else {
+ __entry->byte_len = wc->byte_len;
+ __entry->vendor_err = 0;
+ }
),
- TP_printk("rep=%p, %u bytes: %s (%u/0x%x)",
- __entry->rep, __entry->byte_len,
+ TP_printk("cqe=%p %u bytes: %s (%u/0x%x)",
+ __entry->cqe, __entry->byte_len,
rdma_show_wc_status(__entry->status),
__entry->status, __entry->vendor_err
)
DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li_wake);
DEFINE_MR_EVENT(xprtrdma_localinv);
+ DEFINE_MR_EVENT(xprtrdma_dma_map);
DEFINE_MR_EVENT(xprtrdma_dma_unmap);
DEFINE_MR_EVENT(xprtrdma_remoteinv);
DEFINE_MR_EVENT(xprtrdma_recover_mr);
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(const void *, req)
- __field(const void *, rep)
__field(size_t, callsize)
__field(size_t, rcvsize)
),
__entry->task_id = task->tk_pid;
__entry->client_id = task->tk_client->cl_clid;
__entry->req = req;
- __entry->rep = req ? req->rl_reply : NULL;
__entry->callsize = task->tk_rqstp->rq_callsize;
__entry->rcvsize = task->tk_rqstp->rq_rcvsize;
),
- TP_printk("task:%u@%u req=%p rep=%p (%zu, %zu)",
+ TP_printk("task:%u@%u req=%p (%zu, %zu)",
__entry->task_id, __entry->client_id,
- __entry->req, __entry->rep,
- __entry->callsize, __entry->rcvsize
+ __entry->req, __entry->callsize, __entry->rcvsize
)
);
)
);
- DEFINE_RXPRT_EVENT(xprtrdma_noreps);
-
/**
** Callback events
**/
DEFINE_CB_EVENT(xprtrdma_cb_call);
DEFINE_CB_EVENT(xprtrdma_cb_reply);
+/**
+ ** Server-side RPC/RDMA events
+ **/
+
+DECLARE_EVENT_CLASS(svcrdma_xprt_event,
+ TP_PROTO(
+ const struct svc_xprt *xprt
+ ),
+
+ TP_ARGS(xprt),
+
+ TP_STRUCT__entry(
+ __field(const void *, xprt)
+ __string(addr, xprt->xpt_remotebuf)
+ ),
+
+ TP_fast_assign(
+ __entry->xprt = xprt;
+ __assign_str(addr, xprt->xpt_remotebuf);
+ ),
+
+ TP_printk("xprt=%p addr=%s",
+ __entry->xprt, __get_str(addr)
+ )
+);
+
+#define DEFINE_XPRT_EVENT(name) \
+ DEFINE_EVENT(svcrdma_xprt_event, svcrdma_xprt_##name, \
+ TP_PROTO( \
+ const struct svc_xprt *xprt \
+ ), \
+ TP_ARGS(xprt))
+
+DEFINE_XPRT_EVENT(accept);
+DEFINE_XPRT_EVENT(fail);
+DEFINE_XPRT_EVENT(free);
+
+TRACE_DEFINE_ENUM(RDMA_MSG);
+TRACE_DEFINE_ENUM(RDMA_NOMSG);
+TRACE_DEFINE_ENUM(RDMA_MSGP);
+TRACE_DEFINE_ENUM(RDMA_DONE);
+TRACE_DEFINE_ENUM(RDMA_ERROR);
+
+#define show_rpcrdma_proc(x) \
+ __print_symbolic(x, \
+ { RDMA_MSG, "RDMA_MSG" }, \
+ { RDMA_NOMSG, "RDMA_NOMSG" }, \
+ { RDMA_MSGP, "RDMA_MSGP" }, \
+ { RDMA_DONE, "RDMA_DONE" }, \
+ { RDMA_ERROR, "RDMA_ERROR" })
+
+TRACE_EVENT(svcrdma_decode_rqst,
+ TP_PROTO(
+ __be32 *p,
+ unsigned int hdrlen
+ ),
+
+ TP_ARGS(p, hdrlen),
+
+ TP_STRUCT__entry(
+ __field(u32, xid)
+ __field(u32, vers)
+ __field(u32, proc)
+ __field(u32, credits)
+ __field(unsigned int, hdrlen)
+ ),
+
+ TP_fast_assign(
+ __entry->xid = be32_to_cpup(p++);
+ __entry->vers = be32_to_cpup(p++);
+ __entry->credits = be32_to_cpup(p++);
+ __entry->proc = be32_to_cpup(p);
+ __entry->hdrlen = hdrlen;
+ ),
+
+ TP_printk("xid=0x%08x vers=%u credits=%u proc=%s hdrlen=%u",
+ __entry->xid, __entry->vers, __entry->credits,
+ show_rpcrdma_proc(__entry->proc), __entry->hdrlen)
+);
+
+TRACE_EVENT(svcrdma_decode_short,
+ TP_PROTO(
+ unsigned int hdrlen
+ ),
+
+ TP_ARGS(hdrlen),
+
+ TP_STRUCT__entry(
+ __field(unsigned int, hdrlen)
+ ),
+
+ TP_fast_assign(
+ __entry->hdrlen = hdrlen;
+ ),
+
+ TP_printk("hdrlen=%u", __entry->hdrlen)
+);
+
+DECLARE_EVENT_CLASS(svcrdma_badreq_event,
+ TP_PROTO(
+ __be32 *p
+ ),
+
+ TP_ARGS(p),
+
+ TP_STRUCT__entry(
+ __field(u32, xid)
+ __field(u32, vers)
+ __field(u32, proc)
+ __field(u32, credits)
+ ),
+
+ TP_fast_assign(
+ __entry->xid = be32_to_cpup(p++);
+ __entry->vers = be32_to_cpup(p++);
+ __entry->credits = be32_to_cpup(p++);
+ __entry->proc = be32_to_cpup(p);
+ ),
+
+ TP_printk("xid=0x%08x vers=%u credits=%u proc=%u",
+ __entry->xid, __entry->vers, __entry->credits, __entry->proc)
+);
+
+#define DEFINE_BADREQ_EVENT(name) \
+ DEFINE_EVENT(svcrdma_badreq_event, svcrdma_decode_##name,\
+ TP_PROTO( \
+ __be32 *p \
+ ), \
+ TP_ARGS(p))
+
+DEFINE_BADREQ_EVENT(badvers);
+DEFINE_BADREQ_EVENT(drop);
+DEFINE_BADREQ_EVENT(badproc);
+DEFINE_BADREQ_EVENT(parse);
+
+DECLARE_EVENT_CLASS(svcrdma_segment_event,
+ TP_PROTO(
+ u32 handle,
+ u32 length,
+ u64 offset
+ ),
+
+ TP_ARGS(handle, length, offset),
+
+ TP_STRUCT__entry(
+ __field(u32, handle)
+ __field(u32, length)
+ __field(u64, offset)
+ ),
+
+ TP_fast_assign(
+ __entry->handle = handle;
+ __entry->length = length;
+ __entry->offset = offset;
+ ),
+
+ TP_printk("%u@0x%016llx:0x%08x",
+ __entry->length, (unsigned long long)__entry->offset,
+ __entry->handle
+ )
+);
+
+#define DEFINE_SEGMENT_EVENT(name) \
+ DEFINE_EVENT(svcrdma_segment_event, svcrdma_encode_##name,\
+ TP_PROTO( \
+ u32 handle, \
+ u32 length, \
+ u64 offset \
+ ), \
+ TP_ARGS(handle, length, offset))
+
+DEFINE_SEGMENT_EVENT(rseg);
+DEFINE_SEGMENT_EVENT(wseg);
+
+DECLARE_EVENT_CLASS(svcrdma_chunk_event,
+ TP_PROTO(
+ u32 length
+ ),
+
+ TP_ARGS(length),
+
+ TP_STRUCT__entry(
+ __field(u32, length)
+ ),
+
+ TP_fast_assign(
+ __entry->length = length;
+ ),
+
+ TP_printk("length=%u",
+ __entry->length
+ )
+);
+
+#define DEFINE_CHUNK_EVENT(name) \
+ DEFINE_EVENT(svcrdma_chunk_event, svcrdma_encode_##name,\
+ TP_PROTO( \
+ u32 length \
+ ), \
+ TP_ARGS(length))
+
+DEFINE_CHUNK_EVENT(pzr);
+DEFINE_CHUNK_EVENT(write);
+DEFINE_CHUNK_EVENT(reply);
+
+TRACE_EVENT(svcrdma_encode_read,
+ TP_PROTO(
+ u32 length,
+ u32 position
+ ),
+
+ TP_ARGS(length, position),
+
+ TP_STRUCT__entry(
+ __field(u32, length)
+ __field(u32, position)
+ ),
+
+ TP_fast_assign(
+ __entry->length = length;
+ __entry->position = position;
+ ),
+
+ TP_printk("length=%u position=%u",
+ __entry->length, __entry->position
+ )
+);
+
+DECLARE_EVENT_CLASS(svcrdma_error_event,
+ TP_PROTO(
+ __be32 xid
+ ),
+
+ TP_ARGS(xid),
+
+ TP_STRUCT__entry(
+ __field(u32, xid)
+ ),
+
+ TP_fast_assign(
+ __entry->xid = be32_to_cpu(xid);
+ ),
+
+ TP_printk("xid=0x%08x",
+ __entry->xid
+ )
+);
+
+#define DEFINE_ERROR_EVENT(name) \
+ DEFINE_EVENT(svcrdma_error_event, svcrdma_err_##name, \
+ TP_PROTO( \
+ __be32 xid \
+ ), \
+ TP_ARGS(xid))
+
+DEFINE_ERROR_EVENT(vers);
+DEFINE_ERROR_EVENT(chunk);
+
+/**
+ ** Server-side RDMA API events
+ **/
+
+TRACE_EVENT(svcrdma_dma_map_page,
+ TP_PROTO(
+ const struct svcxprt_rdma *rdma,
+ const void *page
+ ),
+
+ TP_ARGS(rdma, page),
+
+ TP_STRUCT__entry(
+ __field(const void *, page);
+ __string(device, rdma->sc_cm_id->device->name)
+ __string(addr, rdma->sc_xprt.xpt_remotebuf)
+ ),
+
+ TP_fast_assign(
+ __entry->page = page;
+ __assign_str(device, rdma->sc_cm_id->device->name);
+ __assign_str(addr, rdma->sc_xprt.xpt_remotebuf);
+ ),
+
+ TP_printk("addr=%s device=%s page=%p",
+ __get_str(addr), __get_str(device), __entry->page
+ )
+);
+
+TRACE_EVENT(svcrdma_dma_map_rwctx,
+ TP_PROTO(
+ const struct svcxprt_rdma *rdma,
+ int status
+ ),
+
+ TP_ARGS(rdma, status),
+
+ TP_STRUCT__entry(
+ __field(int, status)
+ __string(device, rdma->sc_cm_id->device->name)
+ __string(addr, rdma->sc_xprt.xpt_remotebuf)
+ ),
+
+ TP_fast_assign(
+ __entry->status = status;
+ __assign_str(device, rdma->sc_cm_id->device->name);
+ __assign_str(addr, rdma->sc_xprt.xpt_remotebuf);
+ ),
+
+ TP_printk("addr=%s device=%s status=%d",
+ __get_str(addr), __get_str(device), __entry->status
+ )
+);
+
+TRACE_EVENT(svcrdma_send_failed,
+ TP_PROTO(
+ const struct svc_rqst *rqst,
+ int status
+ ),
+
+ TP_ARGS(rqst, status),
+
+ TP_STRUCT__entry(
+ __field(int, status)
+ __field(u32, xid)
+ __field(const void *, xprt)
+ __string(addr, rqst->rq_xprt->xpt_remotebuf)
+ ),
+
+ TP_fast_assign(
+ __entry->status = status;
+ __entry->xid = __be32_to_cpu(rqst->rq_xid);
+ __entry->xprt = rqst->rq_xprt;
+ __assign_str(addr, rqst->rq_xprt->xpt_remotebuf);
+ ),
+
+ TP_printk("xprt=%p addr=%s xid=0x%08x status=%d",
+ __entry->xprt, __get_str(addr),
+ __entry->xid, __entry->status
+ )
+);
+
+DECLARE_EVENT_CLASS(svcrdma_sendcomp_event,
+ TP_PROTO(
+ const struct ib_wc *wc
+ ),
+
+ TP_ARGS(wc),
+
+ TP_STRUCT__entry(
+ __field(const void *, cqe)
+ __field(unsigned int, status)
+ __field(unsigned int, vendor_err)
+ ),
+
+ TP_fast_assign(
+ __entry->cqe = wc->wr_cqe;
+ __entry->status = wc->status;
+ if (wc->status)
+ __entry->vendor_err = wc->vendor_err;
+ else
+ __entry->vendor_err = 0;
+ ),
+
+ TP_printk("cqe=%p status=%s (%u/0x%x)",
+ __entry->cqe, rdma_show_wc_status(__entry->status),
+ __entry->status, __entry->vendor_err
+ )
+);
+
+#define DEFINE_SENDCOMP_EVENT(name) \
+ DEFINE_EVENT(svcrdma_sendcomp_event, svcrdma_wc_##name, \
+ TP_PROTO( \
+ const struct ib_wc *wc \
+ ), \
+ TP_ARGS(wc))
+
+TRACE_EVENT(svcrdma_post_send,
+ TP_PROTO(
+ const struct ib_send_wr *wr,
+ int status
+ ),
+
+ TP_ARGS(wr, status),
+
+ TP_STRUCT__entry(
+ __field(const void *, cqe)
+ __field(unsigned int, num_sge)
+ __field(u32, inv_rkey)
+ __field(int, status)
+ ),
+
+ TP_fast_assign(
+ __entry->cqe = wr->wr_cqe;
+ __entry->num_sge = wr->num_sge;
+ __entry->inv_rkey = (wr->opcode == IB_WR_SEND_WITH_INV) ?
+ wr->ex.invalidate_rkey : 0;
+ __entry->status = status;
+ ),
+
+ TP_printk("cqe=%p num_sge=%u inv_rkey=0x%08x status=%d",
+ __entry->cqe, __entry->num_sge,
+ __entry->inv_rkey, __entry->status
+ )
+);
+
+DEFINE_SENDCOMP_EVENT(send);
+
+TRACE_EVENT(svcrdma_post_recv,
+ TP_PROTO(
+ const struct ib_recv_wr *wr,
+ int status
+ ),
+
+ TP_ARGS(wr, status),
+
+ TP_STRUCT__entry(
+ __field(const void *, cqe)
+ __field(int, status)
+ ),
+
+ TP_fast_assign(
+ __entry->cqe = wr->wr_cqe;
+ __entry->status = status;
+ ),
+
+ TP_printk("cqe=%p status=%d",
+ __entry->cqe, __entry->status
+ )
+);
+
+TRACE_EVENT(svcrdma_wc_receive,
+ TP_PROTO(
+ const struct ib_wc *wc
+ ),
+
+ TP_ARGS(wc),
+
+ TP_STRUCT__entry(
+ __field(const void *, cqe)
+ __field(u32, byte_len)
+ __field(unsigned int, status)
+ __field(u32, vendor_err)
+ ),
+
+ TP_fast_assign(
+ __entry->cqe = wc->wr_cqe;
+ __entry->status = wc->status;
+ if (wc->status) {
+ __entry->byte_len = 0;
+ __entry->vendor_err = wc->vendor_err;
+ } else {
+ __entry->byte_len = wc->byte_len;
+ __entry->vendor_err = 0;
+ }
+ ),
+
+ TP_printk("cqe=%p byte_len=%u status=%s (%u/0x%x)",
+ __entry->cqe, __entry->byte_len,
+ rdma_show_wc_status(__entry->status),
+ __entry->status, __entry->vendor_err
+ )
+);
+
+TRACE_EVENT(svcrdma_post_rw,
+ TP_PROTO(
+ const void *cqe,
+ int sqecount,
+ int status
+ ),
+
+ TP_ARGS(cqe, sqecount, status),
+
+ TP_STRUCT__entry(
+ __field(const void *, cqe)
+ __field(int, sqecount)
+ __field(int, status)
+ ),
+
+ TP_fast_assign(
+ __entry->cqe = cqe;
+ __entry->sqecount = sqecount;
+ __entry->status = status;
+ ),
+
+ TP_printk("cqe=%p sqecount=%d status=%d",
+ __entry->cqe, __entry->sqecount, __entry->status
+ )
+);
+
+DEFINE_SENDCOMP_EVENT(read);
+DEFINE_SENDCOMP_EVENT(write);
+
+TRACE_EVENT(svcrdma_cm_event,
+ TP_PROTO(
+ const struct rdma_cm_event *event,
+ const struct sockaddr *sap
+ ),
+
+ TP_ARGS(event, sap),
+
+ TP_STRUCT__entry(
+ __field(unsigned int, event)
+ __field(int, status)
+ __array(__u8, addr, INET6_ADDRSTRLEN + 10)
+ ),
+
+ TP_fast_assign(
+ __entry->event = event->event;
+ __entry->status = event->status;
+ snprintf(__entry->addr, sizeof(__entry->addr) - 1,
+ "%pISpc", sap);
+ ),
+
+ TP_printk("addr=%s event=%s (%u/%d)",
+ __entry->addr,
+ rdma_show_cm_event(__entry->event),
+ __entry->event, __entry->status
+ )
+);
+
+TRACE_EVENT(svcrdma_qp_error,
+ TP_PROTO(
+ const struct ib_event *event,
+ const struct sockaddr *sap
+ ),
+
+ TP_ARGS(event, sap),
+
+ TP_STRUCT__entry(
+ __field(unsigned int, event)
+ __string(device, event->device->name)
+ __array(__u8, addr, INET6_ADDRSTRLEN + 10)
+ ),
+
+ TP_fast_assign(
+ __entry->event = event->event;
+ __assign_str(device, event->device->name);
+ snprintf(__entry->addr, sizeof(__entry->addr) - 1,
+ "%pISpc", sap);
+ ),
+
+ TP_printk("addr=%s dev=%s event=%s (%u)",
+ __entry->addr, __get_str(device),
+ rdma_show_ib_event(__entry->event), __entry->event
+ )
+);
+
+DECLARE_EVENT_CLASS(svcrdma_sendqueue_event,
+ TP_PROTO(
+ const struct svcxprt_rdma *rdma
+ ),
+
+ TP_ARGS(rdma),
+
+ TP_STRUCT__entry(
+ __field(int, avail)
+ __field(int, depth)
+ __string(addr, rdma->sc_xprt.xpt_remotebuf)
+ ),
+
+ TP_fast_assign(
+ __entry->avail = atomic_read(&rdma->sc_sq_avail);
+ __entry->depth = rdma->sc_sq_depth;
+ __assign_str(addr, rdma->sc_xprt.xpt_remotebuf);
+ ),
+
+ TP_printk("addr=%s sc_sq_avail=%d/%d",
+ __get_str(addr), __entry->avail, __entry->depth
+ )
+);
+
+#define DEFINE_SQ_EVENT(name) \
+ DEFINE_EVENT(svcrdma_sendqueue_event, svcrdma_sq_##name,\
+ TP_PROTO( \
+ const struct svcxprt_rdma *rdma \
+ ), \
+ TP_ARGS(rdma))
+
+DEFINE_SQ_EVENT(full);
+DEFINE_SQ_EVENT(retry);
+
#endif /* _TRACE_RPCRDMA_H */
#include <trace/define_trace.h>
#include <linux/sunrpc/xprt.h>
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/svc_xprt.h>
+#include <linux/sunrpc/svc_rdma.h>
#include "xprt_rdma.h"
+#include <trace/events/rpcrdma.h>
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
# define RPCDBG_FACILITY RPCDBG_TRANS
spin_unlock(&buf->rb_reqslock);
rpcrdma_destroy_req(req);
-
- kfree(rqst);
}
- static int rpcrdma_bc_setup_rqst(struct rpcrdma_xprt *r_xprt,
- struct rpc_rqst *rqst)
+ static int rpcrdma_bc_setup_reqs(struct rpcrdma_xprt *r_xprt,
+ unsigned int count)
{
- struct rpcrdma_regbuf *rb;
- struct rpcrdma_req *req;
- size_t size;
-
- req = rpcrdma_create_req(r_xprt);
- if (IS_ERR(req))
- return PTR_ERR(req);
-
- size = r_xprt->rx_data.inline_rsize;
- rb = rpcrdma_alloc_regbuf(size, DMA_TO_DEVICE, GFP_KERNEL);
- if (IS_ERR(rb))
- goto out_fail;
- req->rl_sendbuf = rb;
- xdr_buf_init(&rqst->rq_snd_buf, rb->rg_base,
- min_t(size_t, size, PAGE_SIZE));
- rpcrdma_set_xprtdata(rqst, req);
+ struct rpc_xprt *xprt = &r_xprt->rx_xprt;
+ struct rpc_rqst *rqst;
+ unsigned int i;
+
+ for (i = 0; i < (count << 1); i++) {
+ struct rpcrdma_regbuf *rb;
+ struct rpcrdma_req *req;
+ size_t size;
+
+ req = rpcrdma_create_req(r_xprt);
+ if (IS_ERR(req))
+ return PTR_ERR(req);
+ rqst = &req->rl_slot;
+
+ rqst->rq_xprt = xprt;
+ INIT_LIST_HEAD(&rqst->rq_list);
+ INIT_LIST_HEAD(&rqst->rq_bc_list);
+ __set_bit(RPC_BC_PA_IN_USE, &rqst->rq_bc_pa_state);
+ spin_lock_bh(&xprt->bc_pa_lock);
+ list_add(&rqst->rq_bc_pa_list, &xprt->bc_pa_list);
+ spin_unlock_bh(&xprt->bc_pa_lock);
+
+ size = r_xprt->rx_data.inline_rsize;
+ rb = rpcrdma_alloc_regbuf(size, DMA_TO_DEVICE, GFP_KERNEL);
+ if (IS_ERR(rb))
+ goto out_fail;
+ req->rl_sendbuf = rb;
+ xdr_buf_init(&rqst->rq_snd_buf, rb->rg_base,
+ min_t(size_t, size, PAGE_SIZE));
+ }
return 0;
out_fail:
return -ENOMEM;
}
- /* Allocate and add receive buffers to the rpcrdma_buffer's
- * existing list of rep's. These are released when the
- * transport is destroyed.
- */
- static int rpcrdma_bc_setup_reps(struct rpcrdma_xprt *r_xprt,
- unsigned int count)
- {
- int rc = 0;
-
- while (count--) {
- rc = rpcrdma_create_rep(r_xprt);
- if (rc)
- break;
- }
- return rc;
- }
-
/**
* xprt_rdma_bc_setup - Pre-allocate resources for handling backchannel requests
* @xprt: transport associated with these backchannel resources
int xprt_rdma_bc_setup(struct rpc_xprt *xprt, unsigned int reqs)
{
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
- struct rpcrdma_buffer *buffer = &r_xprt->rx_buf;
- struct rpc_rqst *rqst;
- unsigned int i;
int rc;
/* The backchannel reply path returns each rpc_rqst to the
if (reqs > RPCRDMA_BACKWARD_WRS >> 1)
goto out_err;
- for (i = 0; i < (reqs << 1); i++) {
- rqst = kzalloc(sizeof(*rqst), GFP_KERNEL);
- if (!rqst)
- goto out_free;
-
- dprintk("RPC: %s: new rqst %p\n", __func__, rqst);
-
- rqst->rq_xprt = &r_xprt->rx_xprt;
- INIT_LIST_HEAD(&rqst->rq_list);
- INIT_LIST_HEAD(&rqst->rq_bc_list);
- __set_bit(RPC_BC_PA_IN_USE, &rqst->rq_bc_pa_state);
-
- if (rpcrdma_bc_setup_rqst(r_xprt, rqst))
- goto out_free;
-
- spin_lock_bh(&xprt->bc_pa_lock);
- list_add(&rqst->rq_bc_pa_list, &xprt->bc_pa_list);
- spin_unlock_bh(&xprt->bc_pa_lock);
- }
-
- rc = rpcrdma_bc_setup_reps(r_xprt, reqs);
+ rc = rpcrdma_bc_setup_reqs(r_xprt, reqs);
if (rc)
goto out_free;
- rc = rpcrdma_ep_post_extra_recv(r_xprt, reqs);
- if (rc)
- goto out_free;
-
- buffer->rb_bc_srv_max_requests = reqs;
+ r_xprt->rx_buf.rb_bc_srv_max_requests = reqs;
request_module("svcrdma");
trace_xprtrdma_cb_setup(r_xprt, reqs);
return 0;
if (rc < 0)
goto failed_marshal;
+ rpcrdma_post_recvs(r_xprt, true);
if (rpcrdma_ep_post(&r_xprt->rx_ia, &r_xprt->rx_ep, req))
goto drop_connection;
return 0;
*/
void xprt_rdma_bc_free_rqst(struct rpc_rqst *rqst)
{
+ struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
struct rpc_xprt *xprt = rqst->rq_xprt;
dprintk("RPC: %s: freeing rqst %p (req %p)\n",
- __func__, rqst, rpcr_to_rdmar(rqst));
+ __func__, rqst, req);
+
+ rpcrdma_recv_buffer_put(req->rl_reply);
+ req->rl_reply = NULL;
spin_lock_bh(&xprt->bc_pa_lock);
list_add_tail(&rqst->rq_bc_pa_list, &xprt->bc_pa_list);
* verb (fmr_op_unmap).
*/
+#include <linux/sunrpc/svc_rdma.h>
+
#include "xprt_rdma.h"
+#include <trace/events/rpcrdma.h>
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
# define RPCDBG_FACILITY RPCDBG_TRANS
fmr_op_release_mr(mr);
}
+ /* On success, sets:
+ * ep->rep_attr.cap.max_send_wr
+ * ep->rep_attr.cap.max_recv_wr
+ * cdata->max_requests
+ * ia->ri_max_segs
+ */
static int
fmr_op_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep,
struct rpcrdma_create_data_internal *cdata)
{
+ int max_qp_wr;
+
+ max_qp_wr = ia->ri_device->attrs.max_qp_wr;
+ max_qp_wr -= RPCRDMA_BACKWARD_WRS;
+ max_qp_wr -= 1;
+ if (max_qp_wr < RPCRDMA_MIN_SLOT_TABLE)
+ return -ENOMEM;
+ if (cdata->max_requests > max_qp_wr)
+ cdata->max_requests = max_qp_wr;
+ ep->rep_attr.cap.max_send_wr = cdata->max_requests;
+ ep->rep_attr.cap.max_send_wr += RPCRDMA_BACKWARD_WRS;
+ ep->rep_attr.cap.max_send_wr += 1; /* for ib_drain_sq */
+ ep->rep_attr.cap.max_recv_wr = cdata->max_requests;
+ ep->rep_attr.cap.max_recv_wr += RPCRDMA_BACKWARD_WRS;
+ ep->rep_attr.cap.max_recv_wr += 1; /* for ib_drain_rq */
+
ia->ri_max_segs = max_t(unsigned int, 1, RPCRDMA_MAX_DATA_SEGS /
RPCRDMA_MAX_FMR_SGES);
return 0;
mr->mr_sg, i, mr->mr_dir);
if (!mr->mr_nents)
goto out_dmamap_err;
+ trace_xprtrdma_dma_map(mr);
for (i = 0, dma_pages = mr->fmr.fm_physaddrs; i < mr->mr_nents; i++)
dma_pages[i] = sg_dma_address(&mr->mr_sg[i]);
*/
#include <linux/sunrpc/rpc_rdma.h>
+#include <linux/sunrpc/svc_rdma.h>
#include "xprt_rdma.h"
+#include <trace/events/rpcrdma.h>
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
# define RPCDBG_FACILITY RPCDBG_TRANS
frwr_op_release_mr(mr);
}
+ /* On success, sets:
+ * ep->rep_attr.cap.max_send_wr
+ * ep->rep_attr.cap.max_recv_wr
+ * cdata->max_requests
+ * ia->ri_max_segs
+ *
+ * And these FRWR-related fields:
+ * ia->ri_max_frwr_depth
+ * ia->ri_mrtype
+ */
static int
frwr_op_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep,
struct rpcrdma_create_data_internal *cdata)
{
struct ib_device_attr *attrs = &ia->ri_device->attrs;
- int depth, delta;
+ int max_qp_wr, depth, delta;
ia->ri_mrtype = IB_MR_TYPE_MEM_REG;
if (attrs->device_cap_flags & IB_DEVICE_SG_GAPS_REG)
} while (delta > 0);
}
- ep->rep_attr.cap.max_send_wr *= depth;
- if (ep->rep_attr.cap.max_send_wr > attrs->max_qp_wr) {
- cdata->max_requests = attrs->max_qp_wr / depth;
+ max_qp_wr = ia->ri_device->attrs.max_qp_wr;
+ max_qp_wr -= RPCRDMA_BACKWARD_WRS;
+ max_qp_wr -= 1;
+ if (max_qp_wr < RPCRDMA_MIN_SLOT_TABLE)
+ return -ENOMEM;
+ if (cdata->max_requests > max_qp_wr)
+ cdata->max_requests = max_qp_wr;
+ ep->rep_attr.cap.max_send_wr = cdata->max_requests * depth;
+ if (ep->rep_attr.cap.max_send_wr > max_qp_wr) {
+ cdata->max_requests = max_qp_wr / depth;
if (!cdata->max_requests)
return -EINVAL;
ep->rep_attr.cap.max_send_wr = cdata->max_requests *
depth;
}
+ ep->rep_attr.cap.max_send_wr += RPCRDMA_BACKWARD_WRS;
+ ep->rep_attr.cap.max_send_wr += 1; /* for ib_drain_sq */
+ ep->rep_attr.cap.max_recv_wr = cdata->max_requests;
+ ep->rep_attr.cap.max_recv_wr += RPCRDMA_BACKWARD_WRS;
+ ep->rep_attr.cap.max_recv_wr += 1; /* for ib_drain_rq */
ia->ri_max_segs = max_t(unsigned int, 1, RPCRDMA_MAX_DATA_SEGS /
ia->ri_max_frwr_depth);
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;
+ trace_xprtrdma_dma_map(mr);
ibmr = frwr->fr_mr;
n = ib_map_mr_sg(ibmr, mr->mr_sg, mr->mr_nents, NULL, PAGE_SIZE);
+ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (c) 2015, 2017 Oracle. All rights reserved.
*/
#include <asm/swab.h>
-#define CREATE_TRACE_POINTS
#include "xprt_rdma.h"
+#define CREATE_TRACE_POINTS
+#include <trace/events/rpcrdma.h>
+
MODULE_AUTHOR("Open Grid Computing and Network Appliance, Inc.");
MODULE_DESCRIPTION("RPC/RDMA Transport");
MODULE_LICENSE("Dual BSD/GPL");
+ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (c) 2014-2017 Oracle. All rights reserved.
* Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved.
* to the Linux RPC framework lives.
*/
-#include "xprt_rdma.h"
-
#include <linux/highmem.h>
+#include <linux/sunrpc/svc_rdma.h>
+
+#include "xprt_rdma.h"
+#include <trace/events/rpcrdma.h>
+
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
# define RPCDBG_FACILITY RPCDBG_TRANS
#endif
- static const char transfertypes[][12] = {
- "inline", /* no chunks */
- "read list", /* some argument via rdma read */
- "*read list", /* entire request via rdma read */
- "write list", /* some result via rdma write */
- "reply chunk" /* entire reply via rdma write */
- };
-
/* Returns size of largest RPC-over-RDMA header in a Call message
*
* The largest Call header contains a full-size Read list and a
*/
*ppages = alloc_page(GFP_ATOMIC);
if (!*ppages)
- return -EAGAIN;
+ return -ENOBUFS;
}
seg->mr_page = *ppages;
seg->mr_offset = (char *)page_base;
seg = r_xprt->rx_ia.ri_ops->ro_map(r_xprt, seg, nsegs,
false, &mr);
if (IS_ERR(seg))
- goto out_maperr;
+ return PTR_ERR(seg);
rpcrdma_mr_push(mr, &req->rl_registered);
if (encode_read_segment(xdr, mr, pos) < 0)
} while (nsegs);
return 0;
-
- out_maperr:
- if (PTR_ERR(seg) == -EAGAIN)
- xprt_wait_for_buffer_space(rqst->rq_task, NULL);
- return PTR_ERR(seg);
}
/* Register and XDR encode the Write list. Supports encoding a list
seg = r_xprt->rx_ia.ri_ops->ro_map(r_xprt, seg, nsegs,
true, &mr);
if (IS_ERR(seg))
- goto out_maperr;
+ return PTR_ERR(seg);
rpcrdma_mr_push(mr, &req->rl_registered);
if (encode_rdma_segment(xdr, mr) < 0)
*segcount = cpu_to_be32(nchunks);
return 0;
-
- out_maperr:
- if (PTR_ERR(seg) == -EAGAIN)
- xprt_wait_for_buffer_space(rqst->rq_task, NULL);
- return PTR_ERR(seg);
}
/* Register and XDR encode the Reply chunk. Supports encoding an array
seg = r_xprt->rx_ia.ri_ops->ro_map(r_xprt, seg, nsegs,
true, &mr);
if (IS_ERR(seg))
- goto out_maperr;
+ return PTR_ERR(seg);
rpcrdma_mr_push(mr, &req->rl_registered);
if (encode_rdma_segment(xdr, mr) < 0)
*segcount = cpu_to_be32(nchunks);
return 0;
-
- out_maperr:
- if (PTR_ERR(seg) == -EAGAIN)
- xprt_wait_for_buffer_space(rqst->rq_task, NULL);
- return PTR_ERR(seg);
}
/**
{
req->rl_sendctx = rpcrdma_sendctx_get_locked(&r_xprt->rx_buf);
if (!req->rl_sendctx)
- return -ENOBUFS;
+ return -EAGAIN;
req->rl_sendctx->sc_wr.num_sge = 0;
req->rl_sendctx->sc_unmap_count = 0;
req->rl_sendctx->sc_req = req;
return 0;
out_err:
- r_xprt->rx_stats.failed_marshal_count++;
+ switch (ret) {
+ case -EAGAIN:
+ xprt_wait_for_buffer_space(rqst->rq_task, NULL);
+ break;
+ case -ENOBUFS:
+ break;
+ default:
+ r_xprt->rx_stats.failed_marshal_count++;
+ }
return ret;
}
out_short:
pr_warn("RPC/RDMA short backward direction call\n");
- if (rpcrdma_ep_post_recv(&r_xprt->rx_ia, rep))
- xprt_disconnect_done(&r_xprt->rx_xprt);
return true;
}
#else /* CONFIG_SUNRPC_BACKCHANNEL */
u32 credits;
__be32 *p;
+ --buf->rb_posted_receives;
+
if (rep->rr_hdrbuf.head[0].iov_len == 0)
goto out_badstatus;
+ /* Fixed transport header fields */
xdr_init_decode(&rep->rr_stream, &rep->rr_hdrbuf,
rep->rr_hdrbuf.head[0].iov_base);
-
- /* Fixed transport header fields */
p = xdr_inline_decode(&rep->rr_stream, 4 * sizeof(*p));
if (unlikely(!p))
goto out_shortreply;
trace_xprtrdma_reply(rqst->rq_task, rep, req, credits);
+ rpcrdma_post_recvs(r_xprt, false);
queue_work(rpcrdma_receive_wq, &rep->rr_work);
return;
- out_badstatus:
- rpcrdma_recv_buffer_put(rep);
- if (r_xprt->rx_ep.rep_connected == 1) {
- r_xprt->rx_ep.rep_connected = -EIO;
- rpcrdma_conn_func(&r_xprt->rx_ep);
- }
- return;
-
out_badversion:
trace_xprtrdma_reply_vers(rep);
goto repost;
* receive buffer before returning.
*/
repost:
- r_xprt->rx_stats.bad_reply_count++;
- if (rpcrdma_ep_post_recv(&r_xprt->rx_ia, rep))
- rpcrdma_recv_buffer_put(rep);
+ rpcrdma_post_recvs(r_xprt, false);
+ out_badstatus:
+ rpcrdma_recv_buffer_put(rep);
}
// SPDX-License-Identifier: GPL-2.0
/*
- * Copyright (c) 2015 Oracle. All rights reserved.
+ * Copyright (c) 2015-2018 Oracle. All rights reserved.
*
* Support for backward direction RPCs on RPC/RDMA (server-side).
*/
#include <linux/module.h>
+
#include <linux/sunrpc/svc_rdma.h>
+
#include "xprt_rdma.h"
+#include <trace/events/rpcrdma.h>
#define RPCDBG_FACILITY RPCDBG_SVCXPRT
* the adapter has a small maximum SQ depth.
*/
static int svc_rdma_bc_sendto(struct svcxprt_rdma *rdma,
- struct rpc_rqst *rqst)
+ struct rpc_rqst *rqst,
+ struct svc_rdma_send_ctxt *ctxt)
{
- struct svc_rdma_op_ctxt *ctxt;
int ret;
- ctxt = svc_rdma_get_context(rdma);
-
- /* rpcrdma_bc_send_request builds the transport header and
- * the backchannel RPC message in the same buffer. Thus only
- * one SGE is needed to send both.
- */
- ret = svc_rdma_map_reply_hdr(rdma, ctxt, rqst->rq_buffer,
- rqst->rq_snd_buf.len);
+ ret = svc_rdma_map_reply_msg(rdma, ctxt, &rqst->rq_snd_buf, NULL);
if (ret < 0)
- goto out_err;
+ return -EIO;
/* Bump page refcnt so Send completion doesn't release
* the rq_buffer before all retransmits are complete.
*/
get_page(virt_to_page(rqst->rq_buffer));
- ret = svc_rdma_post_send_wr(rdma, ctxt, 1, 0);
- if (ret)
- goto out_unmap;
-
-out_err:
- dprintk("svcrdma: %s returns %d\n", __func__, ret);
- return ret;
-
-out_unmap:
- svc_rdma_unmap_dma(ctxt);
- svc_rdma_put_context(ctxt, 1);
- ret = -EIO;
- goto out_err;
+ ctxt->sc_send_wr.opcode = IB_WR_SEND;
+ return svc_rdma_send(rdma, &ctxt->sc_send_wr);
}
/* Server-side transport endpoint wants a whole page for its send
{
struct rpc_xprt *xprt = rqst->rq_xprt;
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
+ struct svc_rdma_send_ctxt *ctxt;
__be32 *p;
int rc;
- /* Space in the send buffer for an RPC/RDMA header is reserved
- * via xprt->tsh_size.
- */
- p = rqst->rq_buffer;
+ ctxt = svc_rdma_send_ctxt_get(rdma);
+ if (!ctxt)
+ goto drop_connection;
+
+ p = ctxt->sc_xprt_buf;
*p++ = rqst->rq_xid;
*p++ = rpcrdma_version;
*p++ = cpu_to_be32(r_xprt->rx_buf.rb_bc_max_requests);
*p++ = xdr_zero;
*p++ = xdr_zero;
*p = xdr_zero;
+ svc_rdma_sync_reply_hdr(rdma, ctxt, RPCRDMA_HDRLEN_MIN);
#ifdef SVCRDMA_BACKCHANNEL_DEBUG
pr_info("%s: %*ph\n", __func__, 64, rqst->rq_buffer);
#endif
- rc = svc_rdma_bc_sendto(rdma, rqst);
- if (rc)
+ rc = svc_rdma_bc_sendto(rdma, rqst, ctxt);
+ if (rc) {
+ svc_rdma_send_ctxt_put(rdma, ctxt);
goto drop_connection;
+ }
return rc;
drop_connection:
.reserve_xprt = xprt_reserve_xprt_cong,
.release_xprt = xprt_release_xprt_cong,
.alloc_slot = xprt_alloc_slot,
+ .free_slot = xprt_free_slot,
.release_request = xprt_release_rqst_cong,
.buf_alloc = xprt_rdma_bc_allocate,
.buf_free = xprt_rdma_bc_free,
xprt->idle_timeout = RPCRDMA_IDLE_DISC_TO;
xprt->prot = XPRT_TRANSPORT_BC_RDMA;
- xprt->tsh_size = RPCRDMA_HDRLEN_MIN / sizeof(__be32);
+ xprt->tsh_size = 0;
xprt->ops = &xprt_rdma_bc_procs;
memcpy(&xprt->addr, args->dstaddr, args->addrlen);
+ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (c) 2014-2017 Oracle. All rights reserved.
* Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved.
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/seq_file.h>
+#include <linux/smp.h>
+
#include <linux/sunrpc/addr.h>
+#include <linux/sunrpc/svc_rdma.h>
#include "xprt_rdma.h"
+#include <trace/events/rpcrdma.h>
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
# define RPCDBG_FACILITY RPCDBG_TRANS
return ERR_PTR(-EBADF);
}
- xprt = xprt_alloc(args->net, sizeof(struct rpcrdma_xprt),
- xprt_rdma_slot_table_entries,
- xprt_rdma_slot_table_entries);
+ xprt = xprt_alloc(args->net, sizeof(struct rpcrdma_xprt), 0, 0);
if (xprt == NULL) {
dprintk("RPC: %s: couldn't allocate rpcrdma_xprt\n",
__func__);
xprt_set_bound(xprt);
xprt_rdma_format_addresses(xprt, sap);
- cdata.max_requests = xprt->max_reqs;
+ cdata.max_requests = xprt_rdma_slot_table_entries;
cdata.rsize = RPCRDMA_MAX_SEGS * PAGE_SIZE; /* RDMA write max */
cdata.wsize = RPCRDMA_MAX_SEGS * PAGE_SIZE; /* RDMA read max */
}
}
+ /**
+ * xprt_rdma_alloc_slot - allocate an rpc_rqst
+ * @xprt: controlling RPC transport
+ * @task: RPC task requesting a fresh rpc_rqst
+ *
+ * tk_status values:
+ * %0 if task->tk_rqstp points to a fresh rpc_rqst
+ * %-EAGAIN if no rpc_rqst is available; queued on backlog
+ */
+ static void
+ xprt_rdma_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task)
+ {
+ struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
+ struct rpcrdma_req *req;
+
+ req = rpcrdma_buffer_get(&r_xprt->rx_buf);
+ if (!req)
+ goto out_sleep;
+ task->tk_rqstp = &req->rl_slot;
+ task->tk_status = 0;
+ return;
+
+ out_sleep:
+ rpc_sleep_on(&xprt->backlog, task, NULL);
+ task->tk_status = -EAGAIN;
+ }
+
+ /**
+ * xprt_rdma_free_slot - release an rpc_rqst
+ * @xprt: controlling RPC transport
+ * @rqst: rpc_rqst to release
+ *
+ */
+ static void
+ xprt_rdma_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *rqst)
+ {
+ memset(rqst, 0, sizeof(*rqst));
+ rpcrdma_buffer_put(rpcr_to_rdmar(rqst));
+ rpc_wake_up_next(&xprt->backlog);
+ }
+
static bool
rpcrdma_get_sendbuf(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
size_t size, gfp_t flags)
{
struct rpc_rqst *rqst = task->tk_rqstp;
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(rqst->rq_xprt);
- struct rpcrdma_req *req;
+ struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
gfp_t flags;
- req = rpcrdma_buffer_get(&r_xprt->rx_buf);
- if (req == NULL)
- goto out_get;
-
flags = RPCRDMA_DEF_GFP;
if (RPC_IS_SWAPPER(task))
flags = __GFP_MEMALLOC | GFP_NOWAIT | __GFP_NOWARN;
if (!rpcrdma_get_recvbuf(r_xprt, req, rqst->rq_rcvsize, flags))
goto out_fail;
- rpcrdma_set_xprtdata(rqst, req);
rqst->rq_buffer = req->rl_sendbuf->rg_base;
rqst->rq_rbuffer = req->rl_recvbuf->rg_base;
trace_xprtrdma_allocate(task, req);
return 0;
out_fail:
- rpcrdma_buffer_put(req);
- out_get:
trace_xprtrdma_allocate(task, NULL);
return -ENOMEM;
}
if (test_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags))
rpcrdma_release_rqst(r_xprt, req);
trace_xprtrdma_rpc_done(task, req);
- rpcrdma_buffer_put(req);
}
/**
if (rc < 0)
goto failed_marshal;
- if (req->rl_reply == NULL) /* e.g. reconnection */
- rpcrdma_recv_buffer_get(req);
-
/* Must suppress retransmit to maintain credits */
if (rqst->rq_connect_cookie == xprt->connect_cookie)
goto drop_connection;
static const struct rpc_xprt_ops xprt_rdma_procs = {
.reserve_xprt = xprt_reserve_xprt_cong,
.release_xprt = xprt_release_xprt_cong, /* sunrpc/xprt.c */
- .alloc_slot = xprt_alloc_slot,
+ .alloc_slot = xprt_rdma_alloc_slot,
+ .free_slot = xprt_rdma_free_slot,
.release_request = xprt_release_rqst_cong, /* ditto */
.set_retrans_timeout = xprt_set_retrans_timeout_def, /* ditto */
.timer = xprt_rdma_timer,
+ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (c) 2014-2017 Oracle. All rights reserved.
* Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved.
#include <rdma/ib_cm.h>
#include "xprt_rdma.h"
+#include <trace/events/rpcrdma.h>
/*
* Globals/Macros
/*
* internal functions
*/
+ static void rpcrdma_sendctx_put_locked(struct rpcrdma_sendctx *sc);
static void rpcrdma_mrs_create(struct rpcrdma_xprt *r_xprt);
static void rpcrdma_mrs_destroy(struct rpcrdma_buffer *buf);
+ static int rpcrdma_create_rep(struct rpcrdma_xprt *r_xprt, bool temp);
static void rpcrdma_dma_unmap_regbuf(struct rpcrdma_regbuf *rb);
struct workqueue_struct *rpcrdma_receive_wq __read_mostly;
rr_cqe);
/* WARNING: Only wr_id and status are reliable at this point */
- trace_xprtrdma_wc_receive(rep, wc);
+ trace_xprtrdma_wc_receive(wc);
if (wc->status != IB_WC_SUCCESS)
goto out_fail;
complete(&ia->ri_done);
break;
case RDMA_CM_EVENT_ADDR_ERROR:
- ia->ri_async_rc = -EHOSTUNREACH;
+ ia->ri_async_rc = -EPROTO;
complete(&ia->ri_done);
break;
case RDMA_CM_EVENT_ROUTE_ERROR:
connstate = -ENOTCONN;
goto connected;
case RDMA_CM_EVENT_UNREACHABLE:
- connstate = -ENETDOWN;
+ connstate = -ENETUNREACH;
goto connected;
case RDMA_CM_EVENT_REJECTED:
dprintk("rpcrdma: connection to %s:%s rejected: %s\n",
init_completion(&ia->ri_done);
init_completion(&ia->ri_remove_done);
- id = rdma_create_id(&init_net, rpcrdma_conn_upcall, xprt, RDMA_PS_TCP,
- IB_QPT_RC);
+ id = rdma_create_id(xprt->rx_xprt.xprt_net, rpcrdma_conn_upcall,
+ xprt, RDMA_PS_TCP, IB_QPT_RC);
if (IS_ERR(id)) {
rc = PTR_ERR(id);
dprintk("RPC: %s: rdma_create_id() failed %i\n",
struct rpcrdma_create_data_internal *cdata)
{
struct rpcrdma_connect_private *pmsg = &ep->rep_cm_private;
- unsigned int max_qp_wr, max_sge;
struct ib_cq *sendcq, *recvcq;
+ unsigned int max_sge;
int rc;
max_sge = min_t(unsigned int, ia->ri_device->attrs.max_sge,
}
ia->ri_max_send_sges = max_sge;
- if (ia->ri_device->attrs.max_qp_wr <= RPCRDMA_BACKWARD_WRS) {
- dprintk("RPC: %s: insufficient wqe's available\n",
- __func__);
- return -ENOMEM;
- }
- max_qp_wr = ia->ri_device->attrs.max_qp_wr - RPCRDMA_BACKWARD_WRS - 1;
-
- /* check provider's send/recv wr limits */
- if (cdata->max_requests > max_qp_wr)
- cdata->max_requests = max_qp_wr;
+ rc = ia->ri_ops->ro_open(ia, ep, cdata);
+ if (rc)
+ return rc;
ep->rep_attr.event_handler = rpcrdma_qp_async_error_upcall;
ep->rep_attr.qp_context = ep;
ep->rep_attr.srq = NULL;
- ep->rep_attr.cap.max_send_wr = cdata->max_requests;
- ep->rep_attr.cap.max_send_wr += RPCRDMA_BACKWARD_WRS;
- ep->rep_attr.cap.max_send_wr += 1; /* drain cqe */
- rc = ia->ri_ops->ro_open(ia, ep, cdata);
- if (rc)
- return rc;
- ep->rep_attr.cap.max_recv_wr = cdata->max_requests;
- ep->rep_attr.cap.max_recv_wr += RPCRDMA_BACKWARD_WRS;
- ep->rep_attr.cap.max_recv_wr += 1; /* drain cqe */
ep->rep_attr.cap.max_send_sge = max_sge;
ep->rep_attr.cap.max_recv_sge = 1;
ep->rep_attr.cap.max_inline_data = 0;
{
struct rpcrdma_xprt *r_xprt = container_of(ia, struct rpcrdma_xprt,
rx_ia);
- unsigned int extras;
int rc;
retry:
}
dprintk("RPC: %s: connected\n", __func__);
- extras = r_xprt->rx_buf.rb_bc_srv_max_requests;
- if (extras)
- rpcrdma_ep_post_extra_recv(r_xprt, extras);
+
+ rpcrdma_post_recvs(r_xprt, true);
out:
if (rc)
sc->sc_xprt = r_xprt;
buf->rb_sc_ctxs[i] = sc;
}
+ buf->rb_flags = 0;
return 0;
* completions recently. This is a sign the Send Queue is
* backing up. Cause the caller to pause and try again.
*/
- dprintk("RPC: %s: empty sendctx queue\n", __func__);
+ set_bit(RPCRDMA_BUF_F_EMPTY_SCQ, &buf->rb_flags);
r_xprt = container_of(buf, struct rpcrdma_xprt, rx_buf);
r_xprt->rx_stats.empty_sendctx_q++;
return NULL;
*
* The caller serializes calls to this function (per rpcrdma_buffer).
*/
- void rpcrdma_sendctx_put_locked(struct rpcrdma_sendctx *sc)
+ static void
+ rpcrdma_sendctx_put_locked(struct rpcrdma_sendctx *sc)
{
struct rpcrdma_buffer *buf = &sc->sc_xprt->rx_buf;
unsigned long next_tail;
/* Paired with READ_ONCE */
smp_store_release(&buf->rb_sc_tail, next_tail);
+
+ if (test_and_clear_bit(RPCRDMA_BUF_F_EMPTY_SCQ, &buf->rb_flags)) {
+ smp_mb__after_atomic();
+ xprt_write_space(&sc->sc_xprt->rx_xprt);
+ }
}
static void
return req;
}
- /**
- * rpcrdma_create_rep - Allocate an rpcrdma_rep object
- * @r_xprt: controlling transport
- *
- * Returns 0 on success or a negative errno on failure.
- */
- int
- rpcrdma_create_rep(struct rpcrdma_xprt *r_xprt)
+ static int
+ rpcrdma_create_rep(struct rpcrdma_xprt *r_xprt, bool temp)
{
struct rpcrdma_create_data_internal *cdata = &r_xprt->rx_data;
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
rep->rr_recv_wr.wr_cqe = &rep->rr_cqe;
rep->rr_recv_wr.sg_list = &rep->rr_rdmabuf->rg_iov;
rep->rr_recv_wr.num_sge = 1;
+ rep->rr_temp = temp;
spin_lock(&buf->rb_lock);
list_add(&rep->rr_list, &buf->rb_recv_bufs);
list_add(&req->rl_list, &buf->rb_send_bufs);
}
+ buf->rb_posted_receives = 0;
INIT_LIST_HEAD(&buf->rb_recv_bufs);
- for (i = 0; i <= buf->rb_max_requests; i++) {
- rc = rpcrdma_create_rep(r_xprt);
- if (rc)
- goto out;
- }
rc = rpcrdma_sendctxs_create(r_xprt);
if (rc)
return rc;
}
- static struct rpcrdma_req *
- rpcrdma_buffer_get_req_locked(struct rpcrdma_buffer *buf)
- {
- struct rpcrdma_req *req;
-
- req = list_first_entry(&buf->rb_send_bufs,
- struct rpcrdma_req, rl_list);
- list_del_init(&req->rl_list);
- return req;
- }
-
- static struct rpcrdma_rep *
- rpcrdma_buffer_get_rep_locked(struct rpcrdma_buffer *buf)
- {
- struct rpcrdma_rep *rep;
-
- rep = list_first_entry(&buf->rb_recv_bufs,
- struct rpcrdma_rep, rr_list);
- list_del(&rep->rr_list);
- return rep;
- }
-
static void
rpcrdma_destroy_rep(struct rpcrdma_rep *rep)
{
while (!list_empty(&buf->rb_recv_bufs)) {
struct rpcrdma_rep *rep;
- rep = rpcrdma_buffer_get_rep_locked(buf);
+ rep = list_first_entry(&buf->rb_recv_bufs,
+ struct rpcrdma_rep, rr_list);
+ list_del(&rep->rr_list);
rpcrdma_destroy_rep(rep);
}
- buf->rb_send_count = 0;
spin_lock(&buf->rb_reqslock);
while (!list_empty(&buf->rb_allreqs)) {
spin_lock(&buf->rb_reqslock);
}
spin_unlock(&buf->rb_reqslock);
- buf->rb_recv_count = 0;
rpcrdma_mrs_destroy(buf);
}
__rpcrdma_mr_put(&r_xprt->rx_buf, mr);
}
- static struct rpcrdma_rep *
- rpcrdma_buffer_get_rep(struct rpcrdma_buffer *buffers)
- {
- /* If an RPC previously completed without a reply (say, a
- * credential problem or a soft timeout occurs) then hold off
- * on supplying more Receive buffers until the number of new
- * pending RPCs catches up to the number of posted Receives.
- */
- if (unlikely(buffers->rb_send_count < buffers->rb_recv_count))
- return NULL;
-
- if (unlikely(list_empty(&buffers->rb_recv_bufs)))
- return NULL;
- buffers->rb_recv_count++;
- return rpcrdma_buffer_get_rep_locked(buffers);
- }
-
- /*
- * Get a set of request/reply buffers.
+ /**
+ * rpcrdma_buffer_get - Get a request buffer
+ * @buffers: Buffer pool from which to obtain a buffer
*
- * Reply buffer (if available) is attached to send buffer upon return.
+ * Returns a fresh rpcrdma_req, or NULL if none are available.
*/
struct rpcrdma_req *
rpcrdma_buffer_get(struct rpcrdma_buffer *buffers)
struct rpcrdma_req *req;
spin_lock(&buffers->rb_lock);
- if (list_empty(&buffers->rb_send_bufs))
- goto out_reqbuf;
- buffers->rb_send_count++;
- req = rpcrdma_buffer_get_req_locked(buffers);
- req->rl_reply = rpcrdma_buffer_get_rep(buffers);
+ req = list_first_entry_or_null(&buffers->rb_send_bufs,
+ struct rpcrdma_req, rl_list);
+ if (req)
+ list_del_init(&req->rl_list);
spin_unlock(&buffers->rb_lock);
-
return req;
-
- out_reqbuf:
- spin_unlock(&buffers->rb_lock);
- return NULL;
}
- /*
- * Put request/reply buffers back into pool.
- * Pre-decrement counter/array index.
+ /**
+ * rpcrdma_buffer_put - Put request/reply buffers back into pool
+ * @req: object to return
+ *
*/
void
rpcrdma_buffer_put(struct rpcrdma_req *req)
req->rl_reply = NULL;
spin_lock(&buffers->rb_lock);
- buffers->rb_send_count--;
- list_add_tail(&req->rl_list, &buffers->rb_send_bufs);
+ list_add(&req->rl_list, &buffers->rb_send_bufs);
if (rep) {
- buffers->rb_recv_count--;
- list_add_tail(&rep->rr_list, &buffers->rb_recv_bufs);
+ if (!rep->rr_temp) {
+ list_add(&rep->rr_list, &buffers->rb_recv_bufs);
+ rep = NULL;
+ }
}
spin_unlock(&buffers->rb_lock);
- }
-
- /*
- * Recover reply buffers from pool.
- * This happens when recovering from disconnect.
- */
- void
- rpcrdma_recv_buffer_get(struct rpcrdma_req *req)
- {
- struct rpcrdma_buffer *buffers = req->rl_buffer;
-
- spin_lock(&buffers->rb_lock);
- req->rl_reply = rpcrdma_buffer_get_rep(buffers);
- spin_unlock(&buffers->rb_lock);
+ if (rep)
+ rpcrdma_destroy_rep(rep);
}
/*
{
struct rpcrdma_buffer *buffers = &rep->rr_rxprt->rx_buf;
- spin_lock(&buffers->rb_lock);
- buffers->rb_recv_count--;
- list_add_tail(&rep->rr_list, &buffers->rb_recv_bufs);
- spin_unlock(&buffers->rb_lock);
+ if (!rep->rr_temp) {
+ spin_lock(&buffers->rb_lock);
+ list_add(&rep->rr_list, &buffers->rb_recv_bufs);
+ spin_unlock(&buffers->rb_lock);
+ } else {
+ rpcrdma_destroy_rep(rep);
+ }
}
/**
struct ib_send_wr *send_wr = &req->rl_sendctx->sc_wr;
int rc;
- if (req->rl_reply) {
- rc = rpcrdma_ep_post_recv(ia, req->rl_reply);
- if (rc)
- return rc;
- req->rl_reply = NULL;
- }
-
if (!ep->rep_send_count ||
test_bit(RPCRDMA_REQ_F_TX_RESOURCES, &req->rl_flags)) {
send_wr->send_flags |= IB_SEND_SIGNALED;
return 0;
}
- int
- rpcrdma_ep_post_recv(struct rpcrdma_ia *ia,
- struct rpcrdma_rep *rep)
- {
- struct ib_recv_wr *recv_wr_fail;
- int rc;
-
- if (!rpcrdma_dma_map_regbuf(ia, rep->rr_rdmabuf))
- goto out_map;
- rc = ib_post_recv(ia->ri_id->qp, &rep->rr_recv_wr, &recv_wr_fail);
- trace_xprtrdma_post_recv(rep, rc);
- if (rc)
- return -ENOTCONN;
- return 0;
-
- out_map:
- pr_err("rpcrdma: failed to DMA map the Receive buffer\n");
- return -EIO;
- }
-
/**
- * rpcrdma_ep_post_extra_recv - Post buffers for incoming backchannel requests
- * @r_xprt: transport associated with these backchannel resources
- * @count: minimum number of incoming requests expected
+ * rpcrdma_post_recvs - Maybe post some Receive buffers
+ * @r_xprt: controlling transport
+ * @temp: when true, allocate temp rpcrdma_rep objects
*
- * Returns zero if all requested buffers were posted, or a negative errno.
*/
- int
- rpcrdma_ep_post_extra_recv(struct rpcrdma_xprt *r_xprt, unsigned int count)
+ void
+ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
{
- struct rpcrdma_buffer *buffers = &r_xprt->rx_buf;
- struct rpcrdma_ia *ia = &r_xprt->rx_ia;
- struct rpcrdma_rep *rep;
- int rc;
+ struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
+ struct ib_recv_wr *wr, *bad_wr;
+ int needed, count, rc;
- while (count--) {
- spin_lock(&buffers->rb_lock);
- if (list_empty(&buffers->rb_recv_bufs))
- goto out_reqbuf;
- rep = rpcrdma_buffer_get_rep_locked(buffers);
- spin_unlock(&buffers->rb_lock);
+ needed = buf->rb_credits + (buf->rb_bc_srv_max_requests << 1);
+ if (buf->rb_posted_receives > needed)
+ return;
+ needed -= buf->rb_posted_receives;
- rc = rpcrdma_ep_post_recv(ia, rep);
- if (rc)
- goto out_rc;
- }
+ count = 0;
+ wr = NULL;
+ while (needed) {
+ struct rpcrdma_regbuf *rb;
+ struct rpcrdma_rep *rep;
- return 0;
+ spin_lock(&buf->rb_lock);
+ rep = list_first_entry_or_null(&buf->rb_recv_bufs,
+ struct rpcrdma_rep, rr_list);
+ if (likely(rep))
+ list_del(&rep->rr_list);
+ spin_unlock(&buf->rb_lock);
+ if (!rep) {
+ if (rpcrdma_create_rep(r_xprt, temp))
+ break;
+ continue;
+ }
- out_reqbuf:
- spin_unlock(&buffers->rb_lock);
- trace_xprtrdma_noreps(r_xprt);
- return -ENOMEM;
+ rb = rep->rr_rdmabuf;
+ if (!rpcrdma_regbuf_is_mapped(rb)) {
+ if (!__rpcrdma_dma_map_regbuf(&r_xprt->rx_ia, rb)) {
+ rpcrdma_recv_buffer_put(rep);
+ break;
+ }
+ }
- out_rc:
- rpcrdma_recv_buffer_put(rep);
- return rc;
+ trace_xprtrdma_post_recv(rep->rr_recv_wr.wr_cqe);
+ rep->rr_recv_wr.next = wr;
+ wr = &rep->rr_recv_wr;
+ ++count;
+ --needed;
+ }
+ if (!count)
+ return;
+
+ rc = ib_post_recv(r_xprt->rx_ia.ri_id->qp, wr, &bad_wr);
+ if (rc) {
+ for (wr = bad_wr; wr; wr = wr->next) {
+ struct rpcrdma_rep *rep;
+
+ rep = container_of(wr, struct rpcrdma_rep, rr_recv_wr);
+ rpcrdma_recv_buffer_put(rep);
+ --count;
+ }
+ }
+ buf->rb_posted_receives += count;
+ trace_xprtrdma_post_recvs(r_xprt, count, rc);
}
+ /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright (c) 2014-2017 Oracle. All rights reserved.
* Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved.
__be32 rr_proc;
int rr_wc_flags;
u32 rr_inv_rkey;
+ bool rr_temp;
struct rpcrdma_regbuf *rr_rdmabuf;
struct rpcrdma_xprt *rr_rxprt;
struct work_struct rr_work;
struct rpcrdma_buffer;
struct rpcrdma_req {
struct list_head rl_list;
+ struct rpc_rqst rl_slot;
struct rpcrdma_buffer *rl_buffer;
struct rpcrdma_rep *rl_reply;
struct xdr_stream rl_stream;
RPCRDMA_REQ_F_TX_RESOURCES,
};
- static inline void
- rpcrdma_set_xprtdata(struct rpc_rqst *rqst, struct rpcrdma_req *req)
- {
- rqst->rq_xprtdata = req;
- }
-
static inline struct rpcrdma_req *
rpcr_to_rdmar(const struct rpc_rqst *rqst)
{
- return rqst->rq_xprtdata;
+ return container_of(rqst, struct rpcrdma_req, rl_slot);
}
static inline void
struct rpcrdma_sendctx **rb_sc_ctxs;
spinlock_t rb_lock; /* protect buf lists */
- int rb_send_count, rb_recv_count;
struct list_head rb_send_bufs;
struct list_head rb_recv_bufs;
+ unsigned long rb_flags;
u32 rb_max_requests;
u32 rb_credits; /* most recent credit grant */
+ int rb_posted_receives;
u32 rb_bc_srv_max_requests;
spinlock_t rb_reqslock; /* protect rb_allreqs */
};
#define rdmab_to_ia(b) (&container_of((b), struct rpcrdma_xprt, rx_buf)->rx_ia)
+ /* rb_flags */
+ enum {
+ RPCRDMA_BUF_F_EMPTY_SCQ = 0,
+ };
+
/*
* Internal structure for transport instance creation. This
* exists primarily for modularity.
int rpcrdma_ep_post(struct rpcrdma_ia *, struct rpcrdma_ep *,
struct rpcrdma_req *);
- int rpcrdma_ep_post_recv(struct rpcrdma_ia *, struct rpcrdma_rep *);
+ void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp);
/*
* Buffer calls - xprtrdma/verbs.c
*/
struct rpcrdma_req *rpcrdma_create_req(struct rpcrdma_xprt *);
void rpcrdma_destroy_req(struct rpcrdma_req *);
- int rpcrdma_create_rep(struct rpcrdma_xprt *r_xprt);
int rpcrdma_buffer_create(struct rpcrdma_xprt *);
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_mr *rpcrdma_mr_get(struct rpcrdma_xprt *r_xprt);
void rpcrdma_mr_put(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 *);
struct rpcrdma_regbuf *rpcrdma_alloc_regbuf(size_t, enum dma_data_direction,
return __rpcrdma_dma_map_regbuf(ia, rb);
}
- int rpcrdma_ep_post_extra_recv(struct rpcrdma_xprt *, unsigned int);
-
int rpcrdma_alloc_wq(void);
void rpcrdma_destroy_wq(void);
extern struct xprt_class xprt_rdma_bc;
#endif /* _LINUX_SUNRPC_XPRT_RDMA_H */
-
-#include <trace/events/rpcrdma.h>
projects / J-linux.git / commitdiff