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NFS RDMA client updates for Linux 4.20

Browse Source 
Stable bugfixes:
 - Reset credit grant properly after a disconnect
 
 Other bugfixes and cleanups:
 - xprt_release_rqst_cong is called outside of transport_lock
 - Create more MRs at a time and toss out old ones during recovery
 - Various improvements to the RDMA connection and disconnection code:
   - Improve naming of trace events, functions, and variables
   - Add documenting comments
   - Fix metrics and stats reporting
 - Fix a tracepoint sparse warning
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Merge tag 'nfs-rdma-for-4.20-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

NFS RDMA client updates for Linux 4.20

Stable bugfixes:
- Reset credit grant properly after a disconnect

Other bugfixes and cleanups:
- xprt_release_rqst_cong is called outside of transport_lock
- Create more MRs at a time and toss out old ones during recovery
- Various improvements to the RDMA connection and disconnection code:
  - Improve naming of trace events, functions, and variables
  - Add documenting comments
  - Fix metrics and stats reporting
- Fix a tracepoint sparse warning

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2018-10-18 17:29:00 -04:00
commit 93bdcf9fdb
11 changed files with 308 additions and 357 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
include/trace/events/rpcrdma.h
View File

@ -263,7 +263,7 @@ DECLARE_EVENT_CLASS(xprtrdma_mr,
);
#define DEFINE_MR_EVENT(name) \
DEFINE_EVENT(xprtrdma_mr, name, \
DEFINE_EVENT(xprtrdma_mr, xprtrdma_mr_##name, \
TP_PROTO( \
const struct rpcrdma_mr *mr \
), \
@ -306,7 +306,7 @@ DECLARE_EVENT_CLASS(xprtrdma_cb_event,
** Connection events
**/
TRACE_EVENT(xprtrdma_conn_upcall,
TRACE_EVENT(xprtrdma_cm_event,
TP_PROTO(
const struct rpcrdma_xprt *r_xprt,
struct rdma_cm_event *event
@ -377,7 +377,7 @@ DEFINE_RXPRT_EVENT(xprtrdma_reinsert);
DEFINE_RXPRT_EVENT(xprtrdma_reconnect);
DEFINE_RXPRT_EVENT(xprtrdma_inject_dsc);
TRACE_EVENT(xprtrdma_qp_error,
TRACE_EVENT(xprtrdma_qp_event,
TP_PROTO(
const struct rpcrdma_xprt *r_xprt,
const struct ib_event *event
@ -509,7 +509,7 @@ TRACE_EVENT(xprtrdma_post_send,
TP_STRUCT__entry(
__field(const void *, req)
__field(int, num_sge)
__field(bool, signaled)
__field(int, signaled)
__field(int, status)
),
@ -651,11 +651,11 @@ DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_fastreg);
DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li);
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);
DEFINE_MR_EVENT(localinv);
DEFINE_MR_EVENT(map);
DEFINE_MR_EVENT(unmap);
DEFINE_MR_EVENT(remoteinv);
DEFINE_MR_EVENT(recycle);
/**
** Reply events

14
net/sunrpc/xprt.c
View File

@ -834,17 +834,11 @@ void xprt_connect(struct rpc_task *task)
static void xprt_connect_status(struct rpc_task *task)
{
struct rpc_xprt *xprt = task->tk_rqstp->rq_xprt;
if (task->tk_status == 0) {
xprt->stat.connect_count++;
xprt->stat.connect_time += (long)jiffies - xprt->stat.connect_start;
switch (task->tk_status) {
case 0:
dprintk("RPC: %5u xprt_connect_status: connection established\n",
task->tk_pid);
return;
}
switch (task->tk_status) {
break;
case -ECONNREFUSED:
case -ECONNRESET:
case -ECONNABORTED:
@ -861,7 +855,7 @@ static void xprt_connect_status(struct rpc_task *task)
default:
dprintk("RPC: %5u xprt_connect_status: error %d connecting to "
"server %s\n", task->tk_pid, -task->tk_status,
xprt->servername);
task->tk_rqstp->rq_xprt->servername);
task->tk_status = -EIO;
}
}

16
net/sunrpc/xprtrdma/backchannel.c
View File

@ -53,9 +53,9 @@ static int rpcrdma_bc_setup_reqs(struct rpcrdma_xprt *r_xprt,
rqst->rq_xprt = xprt;
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);
spin_lock(&xprt->bc_pa_lock);
list_add(&rqst->rq_bc_pa_list, &xprt->bc_pa_list);
spin_unlock_bh(&xprt->bc_pa_lock);
spin_unlock(&xprt->bc_pa_lock);
size = r_xprt->rx_data.inline_rsize;
rb = rpcrdma_alloc_regbuf(size, DMA_TO_DEVICE, GFP_KERNEL);
@ -230,16 +230,16 @@ void xprt_rdma_bc_destroy(struct rpc_xprt *xprt, unsigned int reqs)
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
struct rpc_rqst *rqst, *tmp;
spin_lock_bh(&xprt->bc_pa_lock);
spin_lock(&xprt->bc_pa_lock);
list_for_each_entry_safe(rqst, tmp, &xprt->bc_pa_list, rq_bc_pa_list) {
list_del(&rqst->rq_bc_pa_list);
spin_unlock_bh(&xprt->bc_pa_lock);
spin_unlock(&xprt->bc_pa_lock);
rpcrdma_bc_free_rqst(r_xprt, rqst);
spin_lock_bh(&xprt->bc_pa_lock);
spin_lock(&xprt->bc_pa_lock);
}
spin_unlock_bh(&xprt->bc_pa_lock);
spin_unlock(&xprt->bc_pa_lock);
}
/**
@ -257,9 +257,9 @@ void xprt_rdma_bc_free_rqst(struct rpc_rqst *rqst)
rpcrdma_recv_buffer_put(req->rl_reply);
req->rl_reply = NULL;
spin_lock_bh(&xprt->bc_pa_lock);
spin_lock(&xprt->bc_pa_lock);
list_add_tail(&rqst->rq_bc_pa_list, &xprt->bc_pa_list);
spin_unlock_bh(&xprt->bc_pa_lock);
spin_unlock(&xprt->bc_pa_lock);
}
/**

143
net/sunrpc/xprtrdma/fmr_ops.c
View File

@ -49,6 +49,65 @@ fmr_is_supported(struct rpcrdma_ia *ia)
return true;
}
static void
__fmr_unmap(struct rpcrdma_mr *mr)
{
LIST_HEAD(l);
int rc;
list_add(&mr->fmr.fm_mr->list, &l);
rc = ib_unmap_fmr(&l);
list_del(&mr->fmr.fm_mr->list);
if (rc)
pr_err("rpcrdma: final ib_unmap_fmr for %p failed %i\n",
mr, rc);
}
/* Release an MR.
*/
static void
fmr_op_release_mr(struct rpcrdma_mr *mr)
{
int rc;
kfree(mr->fmr.fm_physaddrs);
kfree(mr->mr_sg);
/* In case this one was left mapped, try to unmap it
* to prevent dealloc_fmr from failing with EBUSY
*/
__fmr_unmap(mr);
rc = ib_dealloc_fmr(mr->fmr.fm_mr);
if (rc)
pr_err("rpcrdma: final ib_dealloc_fmr for %p returned %i\n",
mr, rc);
kfree(mr);
}
/* MRs are dynamically allocated, so simply clean up and release the MR.
* A replacement MR will subsequently be allocated on demand.
*/
static void
fmr_mr_recycle_worker(struct work_struct *work)
{
struct rpcrdma_mr *mr = container_of(work, struct rpcrdma_mr, mr_recycle);
struct rpcrdma_xprt *r_xprt = mr->mr_xprt;
trace_xprtrdma_mr_recycle(mr);
trace_xprtrdma_mr_unmap(mr);
ib_dma_unmap_sg(r_xprt->rx_ia.ri_device,
mr->mr_sg, mr->mr_nents, mr->mr_dir);
spin_lock(&r_xprt->rx_buf.rb_mrlock);
list_del(&mr->mr_all);
r_xprt->rx_stats.mrs_recycled++;
spin_unlock(&r_xprt->rx_buf.rb_mrlock);
fmr_op_release_mr(mr);
}
static int
fmr_op_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr)
{
@ -76,6 +135,7 @@ fmr_op_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr)
goto out_fmr_err;
INIT_LIST_HEAD(&mr->mr_list);
INIT_WORK(&mr->mr_recycle, fmr_mr_recycle_worker);
return 0;
out_fmr_err:
@ -88,77 +148,6 @@ out_free:
return -ENOMEM;
}
static int
__fmr_unmap(struct rpcrdma_mr *mr)
{
LIST_HEAD(l);
int rc;
list_add(&mr->fmr.fm_mr->list, &l);
rc = ib_unmap_fmr(&l);
list_del(&mr->fmr.fm_mr->list);
return rc;
}
static void
fmr_op_release_mr(struct rpcrdma_mr *mr)
{
LIST_HEAD(unmap_list);
int rc;
kfree(mr->fmr.fm_physaddrs);
kfree(mr->mr_sg);
/* In case this one was left mapped, try to unmap it
* to prevent dealloc_fmr from failing with EBUSY
*/
rc = __fmr_unmap(mr);
if (rc)
pr_err("rpcrdma: final ib_unmap_fmr for %p failed %i\n",
mr, rc);
rc = ib_dealloc_fmr(mr->fmr.fm_mr);
if (rc)
pr_err("rpcrdma: final ib_dealloc_fmr for %p returned %i\n",
mr, rc);
kfree(mr);
}
/* Reset of a single FMR.
*/
static void
fmr_op_recover_mr(struct rpcrdma_mr *mr)
{
struct rpcrdma_xprt *r_xprt = mr->mr_xprt;
int rc;
/* ORDER: invalidate first */
rc = __fmr_unmap(mr);
if (rc)
goto out_release;
/* ORDER: then DMA unmap */
rpcrdma_mr_unmap_and_put(mr);
r_xprt->rx_stats.mrs_recovered++;
return;
out_release:
pr_err("rpcrdma: FMR reset failed (%d), %p released\n", rc, mr);
r_xprt->rx_stats.mrs_orphaned++;
trace_xprtrdma_dma_unmap(mr);
ib_dma_unmap_sg(r_xprt->rx_ia.ri_device,
mr->mr_sg, mr->mr_nents, mr->mr_dir);
spin_lock(&r_xprt->rx_buf.rb_mrlock);
list_del(&mr->mr_all);
spin_unlock(&r_xprt->rx_buf.rb_mrlock);
fmr_op_release_mr(mr);
}
/* On success, sets:
* ep->rep_attr.cap.max_send_wr
* ep->rep_attr.cap.max_recv_wr
@ -187,6 +176,7 @@ fmr_op_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep,
ia->ri_max_segs = max_t(unsigned int, 1, RPCRDMA_MAX_DATA_SEGS /
RPCRDMA_MAX_FMR_SGES);
ia->ri_max_segs += 2; /* segments for head and tail buffers */
return 0;
}
@ -244,7 +234,7 @@ fmr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
mr->mr_sg, i, mr->mr_dir);
if (!mr->mr_nents)
goto out_dmamap_err;
trace_xprtrdma_dma_map(mr);
trace_xprtrdma_mr_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]);
@ -305,13 +295,13 @@ fmr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs)
list_for_each_entry(mr, mrs, mr_list) {
dprintk("RPC: %s: unmapping fmr %p\n",
__func__, &mr->fmr);
trace_xprtrdma_localinv(mr);
trace_xprtrdma_mr_localinv(mr);
list_add_tail(&mr->fmr.fm_mr->list, &unmap_list);
}
r_xprt->rx_stats.local_inv_needed++;
rc = ib_unmap_fmr(&unmap_list);
if (rc)
goto out_reset;
goto out_release;
/* ORDER: Now DMA unmap all of the req's MRs, and return
* them to the free MW list.
@ -324,13 +314,13 @@ fmr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs)
return;
out_reset:
out_release:
pr_err("rpcrdma: ib_unmap_fmr failed (%i)\n", rc);
while (!list_empty(mrs)) {
mr = rpcrdma_mr_pop(mrs);
list_del(&mr->fmr.fm_mr->list);
fmr_op_recover_mr(mr);
rpcrdma_mr_recycle(mr);
}
}
@ -338,7 +328,6 @@ const struct rpcrdma_memreg_ops rpcrdma_fmr_memreg_ops = {
.ro_map = fmr_op_map,
.ro_send = fmr_op_send,
.ro_unmap_sync = fmr_op_unmap_sync,
.ro_recover_mr = fmr_op_recover_mr,
.ro_open = fmr_op_open,
.ro_maxpages = fmr_op_maxpages,
.ro_init_mr = fmr_op_init_mr,

137
net/sunrpc/xprtrdma/frwr_ops.c
View File

@ -97,6 +97,44 @@ out_not_supported:
return false;
}
static void
frwr_op_release_mr(struct rpcrdma_mr *mr)
{
int rc;
rc = ib_dereg_mr(mr->frwr.fr_mr);
if (rc)
pr_err("rpcrdma: final ib_dereg_mr for %p returned %i\n",
mr, rc);
kfree(mr->mr_sg);
kfree(mr);
}
/* MRs are dynamically allocated, so simply clean up and release the MR.
* A replacement MR will subsequently be allocated on demand.
*/
static void
frwr_mr_recycle_worker(struct work_struct *work)
{
struct rpcrdma_mr *mr = container_of(work, struct rpcrdma_mr, mr_recycle);
enum rpcrdma_frwr_state state = mr->frwr.fr_state;
struct rpcrdma_xprt *r_xprt = mr->mr_xprt;
trace_xprtrdma_mr_recycle(mr);
if (state != FRWR_FLUSHED_LI) {
trace_xprtrdma_mr_unmap(mr);
ib_dma_unmap_sg(r_xprt->rx_ia.ri_device,
mr->mr_sg, mr->mr_nents, mr->mr_dir);
}
spin_lock(&r_xprt->rx_buf.rb_mrlock);
list_del(&mr->mr_all);
r_xprt->rx_stats.mrs_recycled++;
spin_unlock(&r_xprt->rx_buf.rb_mrlock);
frwr_op_release_mr(mr);
}
static int
frwr_op_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr)
{
@ -113,6 +151,7 @@ frwr_op_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr)
goto out_list_err;
INIT_LIST_HEAD(&mr->mr_list);
INIT_WORK(&mr->mr_recycle, frwr_mr_recycle_worker);
sg_init_table(mr->mr_sg, depth);
init_completion(&frwr->fr_linv_done);
return 0;
@ -131,79 +170,6 @@ out_list_err:
return rc;
}
static void
frwr_op_release_mr(struct rpcrdma_mr *mr)
{
int rc;
rc = ib_dereg_mr(mr->frwr.fr_mr);
if (rc)
pr_err("rpcrdma: final ib_dereg_mr for %p returned %i\n",
mr, rc);
kfree(mr->mr_sg);
kfree(mr);
}
static int
__frwr_mr_reset(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr)
{
struct rpcrdma_frwr *frwr = &mr->frwr;
int rc;
rc = ib_dereg_mr(frwr->fr_mr);
if (rc) {
pr_warn("rpcrdma: ib_dereg_mr status %d, frwr %p orphaned\n",
rc, mr);
return rc;
}
frwr->fr_mr = ib_alloc_mr(ia->ri_pd, ia->ri_mrtype,
ia->ri_max_frwr_depth);
if (IS_ERR(frwr->fr_mr)) {
pr_warn("rpcrdma: ib_alloc_mr status %ld, frwr %p orphaned\n",
PTR_ERR(frwr->fr_mr), mr);
return PTR_ERR(frwr->fr_mr);
}
dprintk("RPC: %s: recovered FRWR %p\n", __func__, frwr);
frwr->fr_state = FRWR_IS_INVALID;
return 0;
}
/* Reset of a single FRWR. Generate a fresh rkey by replacing the MR.
*/
static void
frwr_op_recover_mr(struct rpcrdma_mr *mr)
{
enum rpcrdma_frwr_state state = mr->frwr.fr_state;
struct rpcrdma_xprt *r_xprt = mr->mr_xprt;
struct rpcrdma_ia *ia = &r_xprt->rx_ia;
int rc;
rc = __frwr_mr_reset(ia, mr);
if (state != FRWR_FLUSHED_LI) {
trace_xprtrdma_dma_unmap(mr);
ib_dma_unmap_sg(ia->ri_device,
mr->mr_sg, mr->mr_nents, mr->mr_dir);
}
if (rc)
goto out_release;
rpcrdma_mr_put(mr);
r_xprt->rx_stats.mrs_recovered++;
return;
out_release:
pr_err("rpcrdma: FRWR reset failed %d, %p released\n", rc, mr);
r_xprt->rx_stats.mrs_orphaned++;
spin_lock(&r_xprt->rx_buf.rb_mrlock);
list_del(&mr->mr_all);
spin_unlock(&r_xprt->rx_buf.rb_mrlock);
frwr_op_release_mr(mr);
}
/* On success, sets:
* ep->rep_attr.cap.max_send_wr
* ep->rep_attr.cap.max_recv_wr
@ -276,6 +242,7 @@ frwr_op_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep,
ia->ri_max_segs = max_t(unsigned int, 1, RPCRDMA_MAX_DATA_SEGS /
ia->ri_max_frwr_depth);
ia->ri_max_segs += 2; /* segments for head and tail buffers */
return 0;
}
@ -384,7 +351,7 @@ frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
mr = NULL;
do {
if (mr)
rpcrdma_mr_defer_recovery(mr);
rpcrdma_mr_recycle(mr);
mr = rpcrdma_mr_get(r_xprt);
if (!mr)
return ERR_PTR(-EAGAIN);
@ -417,7 +384,7 @@ frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
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);
trace_xprtrdma_mr_map(mr);
ibmr = frwr->fr_mr;
n = ib_map_mr_sg(ibmr, mr->mr_sg, mr->mr_nents, NULL, PAGE_SIZE);
@ -451,7 +418,7 @@ out_dmamap_err:
out_mapmr_err:
pr_err("rpcrdma: failed to map mr %p (%d/%d)\n",
frwr->fr_mr, n, mr->mr_nents);
rpcrdma_mr_defer_recovery(mr);
rpcrdma_mr_recycle(mr);
return ERR_PTR(-EIO);
}
@ -499,7 +466,7 @@ frwr_op_reminv(struct rpcrdma_rep *rep, struct list_head *mrs)
list_for_each_entry(mr, mrs, mr_list)
if (mr->mr_handle == rep->rr_inv_rkey) {
list_del_init(&mr->mr_list);
trace_xprtrdma_remoteinv(mr);
trace_xprtrdma_mr_remoteinv(mr);
mr->frwr.fr_state = FRWR_IS_INVALID;
rpcrdma_mr_unmap_and_put(mr);
break; /* only one invalidated MR per RPC */
@ -536,7 +503,7 @@ frwr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs)
mr->frwr.fr_state = FRWR_IS_INVALID;
frwr = &mr->frwr;
trace_xprtrdma_localinv(mr);
trace_xprtrdma_mr_localinv(mr);
frwr->fr_cqe.done = frwr_wc_localinv;
last = &frwr->fr_invwr;
@ -570,7 +537,7 @@ frwr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs)
if (bad_wr != first)
wait_for_completion(&frwr->fr_linv_done);
if (rc)
goto reset_mrs;
goto out_release;
/* ORDER: Now DMA unmap all of the MRs, and return
* them to the free MR list.
@ -582,22 +549,21 @@ unmap:
}
return;
reset_mrs:
out_release:
pr_err("rpcrdma: FRWR invalidate ib_post_send returned %i\n", rc);
/* Find and reset the MRs in the LOCAL_INV WRs that did not
/* Unmap and release the MRs in the LOCAL_INV WRs that did not
* get posted.
*/
while (bad_wr) {
frwr = container_of(bad_wr, struct rpcrdma_frwr,
fr_invwr);
mr = container_of(frwr, struct rpcrdma_mr, frwr);
__frwr_mr_reset(ia, mr);
bad_wr = bad_wr->next;
list_del(&mr->mr_list);
frwr_op_release_mr(mr);
}
goto unmap;
}
const struct rpcrdma_memreg_ops rpcrdma_frwr_memreg_ops = {
@ -605,7 +571,6 @@ const struct rpcrdma_memreg_ops rpcrdma_frwr_memreg_ops = {
.ro_send = frwr_op_send,
.ro_reminv = frwr_op_reminv,
.ro_unmap_sync = frwr_op_unmap_sync,
.ro_recover_mr = frwr_op_recover_mr,
.ro_open = frwr_op_open,
.ro_maxpages = frwr_op_maxpages,
.ro_init_mr = frwr_op_init_mr,

20
net/sunrpc/xprtrdma/rpc_rdma.c
View File

@ -71,7 +71,6 @@ static unsigned int rpcrdma_max_call_header_size(unsigned int maxsegs)
size = RPCRDMA_HDRLEN_MIN;
/* Maximum Read list size */
maxsegs += 2; /* segment for head and tail buffers */
size = maxsegs * rpcrdma_readchunk_maxsz * sizeof(__be32);
/* Minimal Read chunk size */
@ -97,7 +96,6 @@ static unsigned int rpcrdma_max_reply_header_size(unsigned int maxsegs)
size = RPCRDMA_HDRLEN_MIN;
/* Maximum Write list size */
maxsegs += 2; /* segment for head and tail buffers */
size = sizeof(__be32); /* segment count */
size += maxsegs * rpcrdma_segment_maxsz * sizeof(__be32);
size += sizeof(__be32); /* list discriminator */
@ -805,7 +803,7 @@ rpcrdma_marshal_req(struct rpcrdma_xprt *r_xprt, struct rpc_rqst *rqst)
struct rpcrdma_mr *mr;
mr = rpcrdma_mr_pop(&req->rl_registered);
rpcrdma_mr_defer_recovery(mr);
rpcrdma_mr_recycle(mr);
}
/* This implementation supports the following combinations
@ -1216,7 +1214,6 @@ void rpcrdma_complete_rqst(struct rpcrdma_rep *rep)
struct rpcrdma_xprt *r_xprt = rep->rr_rxprt;
struct rpc_xprt *xprt = &r_xprt->rx_xprt;
struct rpc_rqst *rqst = rep->rr_rqst;
unsigned long cwnd;
int status;
xprt->reestablish_timeout = 0;
@ -1239,11 +1236,6 @@ void rpcrdma_complete_rqst(struct rpcrdma_rep *rep)
out:
spin_lock(&xprt->queue_lock);
cwnd = xprt->cwnd;
xprt->cwnd = r_xprt->rx_buf.rb_credits << RPC_CWNDSHIFT;
if (xprt->cwnd > cwnd)
xprt_release_rqst_cong(rqst->rq_task);
xprt_complete_rqst(rqst->rq_task, status);
xprt_unpin_rqst(rqst);
spin_unlock(&xprt->queue_lock);
@ -1350,14 +1342,18 @@ void rpcrdma_reply_handler(struct rpcrdma_rep *rep)
if (!rqst)
goto out_norqst;
xprt_pin_rqst(rqst);
spin_unlock(&xprt->queue_lock);
if (credits == 0)
credits = 1; /* don't deadlock */
else if (credits > buf->rb_max_requests)
credits = buf->rb_max_requests;
buf->rb_credits = credits;
spin_unlock(&xprt->queue_lock);
if (buf->rb_credits != credits) {
spin_lock_bh(&xprt->transport_lock);
buf->rb_credits = credits;
xprt->cwnd = credits << RPC_CWNDSHIFT;
spin_unlock_bh(&xprt->transport_lock);
}
req = rpcr_to_rdmar(rqst);
req->rl_reply = rep;

1
net/sunrpc/xprtrdma/svc_rdma_backchannel.c
View File

@ -242,6 +242,7 @@ static void
xprt_rdma_bc_close(struct rpc_xprt *xprt)
{
dprintk("svcrdma: %s: xprt %p\n", __func__, xprt);
xprt->cwnd = RPC_CWNDSHIFT;
}
static void

110
net/sunrpc/xprtrdma/transport.c
View File

@ -225,69 +225,59 @@ xprt_rdma_free_addresses(struct rpc_xprt *xprt)
}
}
void
rpcrdma_conn_func(struct rpcrdma_ep *ep)
{
schedule_delayed_work(&ep->rep_connect_worker, 0);
}
void
rpcrdma_connect_worker(struct work_struct *work)
{
struct rpcrdma_ep *ep =
container_of(work, struct rpcrdma_ep, rep_connect_worker.work);
struct rpcrdma_xprt *r_xprt =
container_of(ep, struct rpcrdma_xprt, rx_ep);
struct rpc_xprt *xprt = &r_xprt->rx_xprt;
spin_lock_bh(&xprt->transport_lock);
if (ep->rep_connected > 0) {
if (!xprt_test_and_set_connected(xprt))
xprt_wake_pending_tasks(xprt, 0);
} else {
if (xprt_test_and_clear_connected(xprt))
xprt_wake_pending_tasks(xprt, -ENOTCONN);
}
spin_unlock_bh(&xprt->transport_lock);
}
/**
* xprt_rdma_connect_worker - establish connection in the background
* @work: worker thread context
*
* Requester holds the xprt's send lock to prevent activity on this
* transport while a fresh connection is being established. RPC tasks
* sleep on the xprt's pending queue waiting for connect to complete.
*/
static void
xprt_rdma_connect_worker(struct work_struct *work)
{
struct rpcrdma_xprt *r_xprt = container_of(work, struct rpcrdma_xprt,
rx_connect_worker.work);
struct rpc_xprt *xprt = &r_xprt->rx_xprt;
int rc = 0;
xprt_clear_connected(xprt);
int rc;
rc = rpcrdma_ep_connect(&r_xprt->rx_ep, &r_xprt->rx_ia);
if (rc)
xprt_wake_pending_tasks(xprt, rc);
xprt_clear_connecting(xprt);
if (r_xprt->rx_ep.rep_connected > 0) {
if (!xprt_test_and_set_connected(xprt)) {
xprt->stat.connect_count++;
xprt->stat.connect_time += (long)jiffies -
xprt->stat.connect_start;
xprt_wake_pending_tasks(xprt, -EAGAIN);
}
} else {
if (xprt_test_and_clear_connected(xprt))
xprt_wake_pending_tasks(xprt, rc);
}
}
/**
* xprt_rdma_inject_disconnect - inject a connection fault
* @xprt: transport context
*
* If @xprt is connected, disconnect it to simulate spurious connection
* loss.
*/
static void
xprt_rdma_inject_disconnect(struct rpc_xprt *xprt)
{
struct rpcrdma_xprt *r_xprt = container_of(xprt, struct rpcrdma_xprt,
rx_xprt);
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
trace_xprtrdma_inject_dsc(r_xprt);
rdma_disconnect(r_xprt->rx_ia.ri_id);
}
/*
* xprt_rdma_destroy
/**
* xprt_rdma_destroy - Full tear down of transport
* @xprt: doomed transport context
*
* Destroy the xprt.
* Free all memory associated with the object, including its own.
* NOTE: none of the *destroy methods free memory for their top-level
* objects, even though they may have allocated it (they do free
* private memory). It's up to the caller to handle it. In this
* case (RDMA transport), all structure memory is inlined with the
* struct rpcrdma_xprt.
* Caller guarantees there will be no more calls to us with
* this @xprt.
*/
static void
xprt_rdma_destroy(struct rpc_xprt *xprt)
@ -298,8 +288,6 @@ xprt_rdma_destroy(struct rpc_xprt *xprt)
cancel_delayed_work_sync(&r_xprt->rx_connect_worker);
xprt_clear_connected(xprt);
rpcrdma_ep_destroy(&r_xprt->rx_ep, &r_xprt->rx_ia);
rpcrdma_buffer_destroy(&r_xprt->rx_buf);
rpcrdma_ia_close(&r_xprt->rx_ia);
@ -442,11 +430,12 @@ out1:
}
/**
* xprt_rdma_close - Close down RDMA connection
* @xprt: generic transport to be closed
* xprt_rdma_close - close a transport connection
* @xprt: transport context
*
* Called during transport shutdown reconnect, or device
* removal. Caller holds the transport's write lock.
* Called during transport shutdown, reconnect, or device removal.
* Caller holds @xprt's send lock to prevent activity on this
* transport while the connection is torn down.
*/
static void
xprt_rdma_close(struct rpc_xprt *xprt)
@ -468,6 +457,12 @@ xprt_rdma_close(struct rpc_xprt *xprt)
xprt->reestablish_timeout = 0;
xprt_disconnect_done(xprt);
rpcrdma_ep_disconnect(ep, ia);
/* Prepare @xprt for the next connection by reinitializing
* its credit grant to one (see RFC 8166, Section 3.3.3).
*/
r_xprt->rx_buf.rb_credits = 1;
xprt->cwnd = RPC_CWNDSHIFT;
}
/**
@ -519,6 +514,12 @@ xprt_rdma_timer(struct rpc_xprt *xprt, struct rpc_task *task)
xprt_force_disconnect(xprt);
}
/**
* xprt_rdma_connect - try to establish a transport connection
* @xprt: transport state
* @task: RPC scheduler context
*
*/
static void
xprt_rdma_connect(struct rpc_xprt *xprt, struct rpc_task *task)
{
@ -638,13 +639,6 @@ rpcrdma_get_recvbuf(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
* 0: Success; rq_buffer points to RPC buffer to use
* ENOMEM: Out of memory, call again later
* EIO: A permanent error occurred, do not retry
*
* The RDMA allocate/free functions need the task structure as a place
* to hide the struct rpcrdma_req, which is necessary for the actual
* send/recv sequence.
*
* xprt_rdma_allocate provides buffers that are already mapped for
* DMA, and a local DMA lkey is provided for each.
*/
static int
xprt_rdma_allocate(struct rpc_task *task)
@ -768,7 +762,7 @@ void xprt_rdma_print_stats(struct rpc_xprt *xprt, struct seq_file *seq)
0, /* need a local port? */
xprt->stat.bind_count,
xprt->stat.connect_count,
xprt->stat.connect_time,
xprt->stat.connect_time / HZ,
idle_time,
xprt->stat.sends,
xprt->stat.recvs,
@ -788,7 +782,7 @@ void xprt_rdma_print_stats(struct rpc_xprt *xprt, struct seq_file *seq)
r_xprt->rx_stats.bad_reply_count,
r_xprt->rx_stats.nomsg_call_count);
seq_printf(seq, "%lu %lu %lu %lu %lu %lu\n",
r_xprt->rx_stats.mrs_recovered,
r_xprt->rx_stats.mrs_recycled,
r_xprt->rx_stats.mrs_orphaned,
r_xprt->rx_stats.mrs_allocated,
r_xprt->rx_stats.local_inv_needed,

178
net/sunrpc/xprtrdma/verbs.c
View File

@ -108,20 +108,48 @@ rpcrdma_destroy_wq(void)
}
}
/**
* rpcrdma_disconnect_worker - Force a disconnect
* @work: endpoint to be disconnected
*
* Provider callbacks can possibly run in an IRQ context. This function
* is invoked in a worker thread to guarantee that disconnect wake-up
* calls are always done in process context.
*/
static void
rpcrdma_qp_async_error_upcall(struct ib_event *event, void *context)
rpcrdma_disconnect_worker(struct work_struct *work)
{
struct rpcrdma_ep *ep = container_of(work, struct rpcrdma_ep,
rep_disconnect_worker.work);
struct rpcrdma_xprt *r_xprt =
container_of(ep, struct rpcrdma_xprt, rx_ep);
xprt_force_disconnect(&r_xprt->rx_xprt);
}
/**
* rpcrdma_qp_event_handler - Handle one QP event (error notification)
* @event: details of the event
* @context: ep that owns QP where event occurred
*
* Called from the RDMA provider (device driver) possibly in an interrupt
* context.
*/
static void
rpcrdma_qp_event_handler(struct ib_event *event, void *context)
{
struct rpcrdma_ep *ep = context;
struct rpcrdma_xprt *r_xprt = container_of(ep, struct rpcrdma_xprt,
rx_ep);
trace_xprtrdma_qp_error(r_xprt, event);
pr_err("rpcrdma: %s on device %s ep %p\n",
ib_event_msg(event->event), event->device->name, context);
trace_xprtrdma_qp_event(r_xprt, event);
pr_err("rpcrdma: %s on device %s connected to %s:%s\n",
ib_event_msg(event->event), event->device->name,
rpcrdma_addrstr(r_xprt), rpcrdma_portstr(r_xprt));
if (ep->rep_connected == 1) {
ep->rep_connected = -EIO;
rpcrdma_conn_func(ep);
schedule_delayed_work(&ep->rep_disconnect_worker, 0);
wake_up_all(&ep->rep_connect_wait);
}
}
@ -219,38 +247,48 @@ rpcrdma_update_connect_private(struct rpcrdma_xprt *r_xprt,
rpcrdma_set_max_header_sizes(r_xprt);
}
/**
* rpcrdma_cm_event_handler - Handle RDMA CM events
* @id: rdma_cm_id on which an event has occurred
* @event: details of the event
*
* Called with @id's mutex held. Returns 1 if caller should
* destroy @id, otherwise 0.
*/
static int
rpcrdma_conn_upcall(struct rdma_cm_id *id, struct rdma_cm_event *event)
rpcrdma_cm_event_handler(struct rdma_cm_id *id, struct rdma_cm_event *event)
{
struct rpcrdma_xprt *xprt = id->context;
struct rpcrdma_ia *ia = &xprt->rx_ia;
struct rpcrdma_ep *ep = &xprt->rx_ep;
int connstate = 0;
struct rpcrdma_xprt *r_xprt = id->context;
struct rpcrdma_ia *ia = &r_xprt->rx_ia;
struct rpcrdma_ep *ep = &r_xprt->rx_ep;
struct rpc_xprt *xprt = &r_xprt->rx_xprt;
trace_xprtrdma_conn_upcall(xprt, event);
might_sleep();
trace_xprtrdma_cm_event(r_xprt, event);
switch (event->event) {
case RDMA_CM_EVENT_ADDR_RESOLVED:
case RDMA_CM_EVENT_ROUTE_RESOLVED:
ia->ri_async_rc = 0;
complete(&ia->ri_done);
break;
return 0;
case RDMA_CM_EVENT_ADDR_ERROR:
ia->ri_async_rc = -EPROTO;
complete(&ia->ri_done);
break;
return 0;
case RDMA_CM_EVENT_ROUTE_ERROR:
ia->ri_async_rc = -ENETUNREACH;
complete(&ia->ri_done);
break;
return 0;
case RDMA_CM_EVENT_DEVICE_REMOVAL:
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
pr_info("rpcrdma: removing device %s for %s:%s\n",
ia->ri_device->name,
rpcrdma_addrstr(xprt), rpcrdma_portstr(xprt));
rpcrdma_addrstr(r_xprt), rpcrdma_portstr(r_xprt));
#endif
set_bit(RPCRDMA_IAF_REMOVING, &ia->ri_flags);
ep->rep_connected = -ENODEV;
xprt_force_disconnect(&xprt->rx_xprt);
xprt_force_disconnect(xprt);
wait_for_completion(&ia->ri_remove_done);
ia->ri_id = NULL;
@ -258,41 +296,40 @@ rpcrdma_conn_upcall(struct rdma_cm_id *id, struct rdma_cm_event *event)
/* Return 1 to ensure the core destroys the id. */
return 1;
case RDMA_CM_EVENT_ESTABLISHED:
++xprt->rx_xprt.connect_cookie;
connstate = 1;
rpcrdma_update_connect_private(xprt, &event->param.conn);
goto connected;
++xprt->connect_cookie;
ep->rep_connected = 1;
rpcrdma_update_connect_private(r_xprt, &event->param.conn);
wake_up_all(&ep->rep_connect_wait);
break;
case RDMA_CM_EVENT_CONNECT_ERROR:
connstate = -ENOTCONN;
goto connected;
ep->rep_connected = -ENOTCONN;
goto disconnected;
case RDMA_CM_EVENT_UNREACHABLE:
connstate = -ENETUNREACH;
goto connected;
ep->rep_connected = -ENETUNREACH;
goto disconnected;
case RDMA_CM_EVENT_REJECTED:
dprintk("rpcrdma: connection to %s:%s rejected: %s\n",
rpcrdma_addrstr(xprt), rpcrdma_portstr(xprt),
rpcrdma_addrstr(r_xprt), rpcrdma_portstr(r_xprt),
rdma_reject_msg(id, event->status));
connstate = -ECONNREFUSED;
ep->rep_connected = -ECONNREFUSED;
if (event->status == IB_CM_REJ_STALE_CONN)
connstate = -EAGAIN;
goto connected;
ep->rep_connected = -EAGAIN;
goto disconnected;
case RDMA_CM_EVENT_DISCONNECTED:
++xprt->rx_xprt.connect_cookie;
connstate = -ECONNABORTED;
connected:
ep->rep_connected = connstate;
rpcrdma_conn_func(ep);
++xprt->connect_cookie;
ep->rep_connected = -ECONNABORTED;
disconnected:
xprt_force_disconnect(xprt);
wake_up_all(&ep->rep_connect_wait);
/*FALLTHROUGH*/
break;
default:
dprintk("RPC: %s: %s:%s on %s/%s (ep 0x%p): %s\n",
__func__,
rpcrdma_addrstr(xprt), rpcrdma_portstr(xprt),
ia->ri_device->name, ia->ri_ops->ro_displayname,
ep, rdma_event_msg(event->event));
break;
}
dprintk("RPC: %s: %s:%s on %s/%s: %s\n", __func__,
rpcrdma_addrstr(r_xprt), rpcrdma_portstr(r_xprt),
ia->ri_device->name, ia->ri_ops->ro_displayname,
rdma_event_msg(event->event));
return 0;
}
@ -308,7 +345,7 @@ rpcrdma_create_id(struct rpcrdma_xprt *xprt, struct rpcrdma_ia *ia)
init_completion(&ia->ri_done);
init_completion(&ia->ri_remove_done);
id = rdma_create_id(xprt->rx_xprt.xprt_net, rpcrdma_conn_upcall,
id = rdma_create_id(xprt->rx_xprt.xprt_net, rpcrdma_cm_event_handler,
xprt, RDMA_PS_TCP, IB_QPT_RC);
if (IS_ERR(id)) {
rc = PTR_ERR(id);
@ -519,7 +556,7 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
if (rc)
return rc;
ep->rep_attr.event_handler = rpcrdma_qp_async_error_upcall;
ep->rep_attr.event_handler = rpcrdma_qp_event_handler;
ep->rep_attr.qp_context = ep;
ep->rep_attr.srq = NULL;
ep->rep_attr.cap.max_send_sge = max_sge;
@ -542,7 +579,8 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
cdata->max_requests >> 2);
ep->rep_send_count = ep->rep_send_batch;
init_waitqueue_head(&ep->rep_connect_wait);
INIT_DELAYED_WORK(&ep->rep_connect_worker, rpcrdma_connect_worker);
INIT_DELAYED_WORK(&ep->rep_disconnect_worker,
rpcrdma_disconnect_worker);
sendcq = ib_alloc_cq(ia->ri_device, NULL,
ep->rep_attr.cap.max_send_wr + 1,
@ -615,7 +653,7 @@ out1:
void
rpcrdma_ep_destroy(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia)
{
cancel_delayed_work_sync(&ep->rep_connect_worker);
cancel_delayed_work_sync(&ep->rep_disconnect_worker);
if (ia->ri_id && ia->ri_id->qp) {
rpcrdma_ep_disconnect(ep, ia);
@ -728,6 +766,7 @@ rpcrdma_ep_connect(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia)
{
struct rpcrdma_xprt *r_xprt = container_of(ia, struct rpcrdma_xprt,
rx_ia);
struct rpc_xprt *xprt = &r_xprt->rx_xprt;
int rc;
retry:
@ -754,6 +793,8 @@ retry:
}
ep->rep_connected = 0;
xprt_clear_connected(xprt);
rpcrdma_post_recvs(r_xprt, true);
rc = rdma_connect(ia->ri_id, &ep->rep_remote_cma);
@ -877,7 +918,6 @@ static int rpcrdma_sendctxs_create(struct rpcrdma_xprt *r_xprt)
sc->sc_xprt = r_xprt;
buf->rb_sc_ctxs[i] = sc;
}
buf->rb_flags = 0;
return 0;
@ -977,39 +1017,6 @@ rpcrdma_sendctx_put_locked(struct rpcrdma_sendctx *sc)
}
}
static void
rpcrdma_mr_recovery_worker(struct work_struct *work)
{
struct rpcrdma_buffer *buf = container_of(work, struct rpcrdma_buffer,
rb_recovery_worker.work);
struct rpcrdma_mr *mr;
spin_lock(&buf->rb_recovery_lock);
while (!list_empty(&buf->rb_stale_mrs)) {
mr = rpcrdma_mr_pop(&buf->rb_stale_mrs);
spin_unlock(&buf->rb_recovery_lock);
trace_xprtrdma_recover_mr(mr);
mr->mr_xprt->rx_ia.ri_ops->ro_recover_mr(mr);
spin_lock(&buf->rb_recovery_lock);
}
spin_unlock(&buf->rb_recovery_lock);
}
void
rpcrdma_mr_defer_recovery(struct rpcrdma_mr *mr)
{
struct rpcrdma_xprt *r_xprt = mr->mr_xprt;
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
spin_lock(&buf->rb_recovery_lock);
rpcrdma_mr_push(mr, &buf->rb_stale_mrs);
spin_unlock(&buf->rb_recovery_lock);
schedule_delayed_work(&buf->rb_recovery_worker, 0);
}
static void
rpcrdma_mrs_create(struct rpcrdma_xprt *r_xprt)
{
@ -1019,7 +1026,7 @@ rpcrdma_mrs_create(struct rpcrdma_xprt *r_xprt)
LIST_HEAD(free);
LIST_HEAD(all);
for (count = 0; count < 3; count++) {
for (count = 0; count < ia->ri_max_segs; count++) {
struct rpcrdma_mr *mr;
int rc;
@ -1138,18 +1145,15 @@ rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt)
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
int i, rc;
buf->rb_flags = 0;
buf->rb_max_requests = r_xprt->rx_data.max_requests;
buf->rb_bc_srv_max_requests = 0;
spin_lock_init(&buf->rb_mrlock);
spin_lock_init(&buf->rb_lock);
spin_lock_init(&buf->rb_recovery_lock);
INIT_LIST_HEAD(&buf->rb_mrs);
INIT_LIST_HEAD(&buf->rb_all);
INIT_LIST_HEAD(&buf->rb_stale_mrs);
INIT_DELAYED_WORK(&buf->rb_refresh_worker,
rpcrdma_mr_refresh_worker);
INIT_DELAYED_WORK(&buf->rb_recovery_worker,
rpcrdma_mr_recovery_worker);
rpcrdma_mrs_create(r_xprt);
@ -1233,7 +1237,6 @@ rpcrdma_mrs_destroy(struct rpcrdma_buffer *buf)
void
rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf)
{
cancel_delayed_work_sync(&buf->rb_recovery_worker);
cancel_delayed_work_sync(&buf->rb_refresh_worker);
rpcrdma_sendctxs_destroy(buf);
@ -1326,7 +1329,7 @@ rpcrdma_mr_unmap_and_put(struct rpcrdma_mr *mr)
{
struct rpcrdma_xprt *r_xprt = mr->mr_xprt;
trace_xprtrdma_dma_unmap(mr);
trace_xprtrdma_mr_unmap(mr);
ib_dma_unmap_sg(r_xprt->rx_ia.ri_device,
mr->mr_sg, mr->mr_nents, mr->mr_dir);
__rpcrdma_mr_put(&r_xprt->rx_buf, mr);
@ -1518,9 +1521,11 @@ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
struct ib_recv_wr *wr, *bad_wr;
int needed, count, rc;
rc = 0;
count = 0;
needed = buf->rb_credits + (buf->rb_bc_srv_max_requests << 1);
if (buf->rb_posted_receives > needed)
return;
goto out;
needed -= buf->rb_posted_receives;
count = 0;
@ -1556,7 +1561,7 @@ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
--needed;
}
if (!count)
return;
goto out;
rc = ib_post_recv(r_xprt->rx_ia.ri_id->qp, wr,
(const struct ib_recv_wr **)&bad_wr);
@ -1570,5 +1575,6 @@ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
}
}
buf->rb_posted_receives += count;
out:
trace_xprtrdma_post_recvs(r_xprt, count, rc);
}

18
net/sunrpc/xprtrdma/xprt_rdma.h
View File

@ -101,7 +101,7 @@ struct rpcrdma_ep {
wait_queue_head_t rep_connect_wait;
struct rpcrdma_connect_private rep_cm_private;
struct rdma_conn_param rep_remote_cma;
struct delayed_work rep_connect_worker;
struct delayed_work rep_disconnect_worker;
};
/* Pre-allocate extra Work Requests for handling backward receives
@ -280,6 +280,7 @@ struct rpcrdma_mr {
u32 mr_handle;
u32 mr_length;
u64 mr_offset;
struct work_struct mr_recycle;
struct list_head mr_all;
};
@ -411,9 +412,6 @@ struct rpcrdma_buffer {
u32 rb_bc_max_requests;
spinlock_t rb_recovery_lock; /* protect rb_stale_mrs */
struct list_head rb_stale_mrs;
struct delayed_work rb_recovery_worker;
struct delayed_work rb_refresh_worker;
};
#define rdmab_to_ia(b) (&container_of((b), struct rpcrdma_xprt, rx_buf)->rx_ia)
@ -452,7 +450,7 @@ struct rpcrdma_stats {
unsigned long hardway_register_count;
unsigned long failed_marshal_count;
unsigned long bad_reply_count;
unsigned long mrs_recovered;
unsigned long mrs_recycled;
unsigned long mrs_orphaned;
unsigned long mrs_allocated;
unsigned long empty_sendctx_q;
@ -481,7 +479,6 @@ struct rpcrdma_memreg_ops {
struct list_head *mrs);
void (*ro_unmap_sync)(struct rpcrdma_xprt *,
struct list_head *);
void (*ro_recover_mr)(struct rpcrdma_mr *mr);
int (*ro_open)(struct rpcrdma_ia *,
struct rpcrdma_ep *,
struct rpcrdma_create_data_internal *);
@ -559,7 +556,6 @@ int rpcrdma_ep_create(struct rpcrdma_ep *, struct rpcrdma_ia *,
struct rpcrdma_create_data_internal *);
void rpcrdma_ep_destroy(struct rpcrdma_ep *, struct rpcrdma_ia *);
int rpcrdma_ep_connect(struct rpcrdma_ep *, struct rpcrdma_ia *);
void rpcrdma_conn_func(struct rpcrdma_ep *ep);
void rpcrdma_ep_disconnect(struct rpcrdma_ep *, struct rpcrdma_ia *);
int rpcrdma_ep_post(struct rpcrdma_ia *, struct rpcrdma_ep *,
@ -578,7 +574,12 @@ struct rpcrdma_sendctx *rpcrdma_sendctx_get_locked(struct rpcrdma_buffer *buf);
struct rpcrdma_mr *rpcrdma_mr_get(struct rpcrdma_xprt *r_xprt);
void rpcrdma_mr_put(struct rpcrdma_mr *mr);
void rpcrdma_mr_unmap_and_put(struct rpcrdma_mr *mr);
void rpcrdma_mr_defer_recovery(struct rpcrdma_mr *mr);
static inline void
rpcrdma_mr_recycle(struct rpcrdma_mr *mr)
{
schedule_work(&mr->mr_recycle);
}
struct rpcrdma_req *rpcrdma_buffer_get(struct rpcrdma_buffer *);
void rpcrdma_buffer_put(struct rpcrdma_req *);
@ -652,7 +653,6 @@ static inline void rpcrdma_set_xdrlen(struct xdr_buf *xdr, size_t len)
extern unsigned int xprt_rdma_max_inline_read;
void xprt_rdma_format_addresses(struct rpc_xprt *xprt, struct sockaddr *sap);
void xprt_rdma_free_addresses(struct rpc_xprt *xprt);
void rpcrdma_connect_worker(struct work_struct *work);
void xprt_rdma_print_stats(struct rpc_xprt *xprt, struct seq_file *seq);
int xprt_rdma_init(void);
void xprt_rdma_cleanup(void);

10
net/sunrpc/xprtsock.c
View File

@ -1452,6 +1452,9 @@ static void xs_tcp_state_change(struct sock *sk)
clear_bit(XPRT_SOCK_CONNECTING, &transport->sock_state);
xprt_clear_connecting(xprt);
xprt->stat.connect_count++;
xprt->stat.connect_time += (long)jiffies -
xprt->stat.connect_start;
xprt_wake_pending_tasks(xprt, -EAGAIN);
}
spin_unlock(&xprt->transport_lock);
@ -1909,6 +1912,9 @@ static int xs_local_setup_socket(struct sock_xprt *transport)
case 0:
dprintk("RPC: xprt %p connected to %s\n",
xprt, xprt->address_strings[RPC_DISPLAY_ADDR]);
xprt->stat.connect_count++;
xprt->stat.connect_time += (long)jiffies -
xprt->stat.connect_start;
xprt_set_connected(xprt);
case -ENOBUFS:
break;
@ -2409,7 +2415,7 @@ static void xs_local_print_stats(struct rpc_xprt *xprt, struct seq_file *seq)
"%llu %llu %lu %llu %llu\n",
xprt->stat.bind_count,
xprt->stat.connect_count,
xprt->stat.connect_time,
xprt->stat.connect_time / HZ,
idle_time,
xprt->stat.sends,
xprt->stat.recvs,
@ -2464,7 +2470,7 @@ static void xs_tcp_print_stats(struct rpc_xprt *xprt, struct seq_file *seq)
transport->srcport,
xprt->stat.bind_count,
xprt->stat.connect_count,
xprt->stat.connect_time,
xprt->stat.connect_time / HZ,
idle_time,
xprt->stat.sends,
xprt->stat.recvs,