Lines Matching refs:rqstp
30 static int svc_deferred_recv(struct svc_rqst *rqstp);
323 * Copy the local and remote xprt addresses to the rqstp structure
325 void svc_xprt_copy_addrs(struct svc_rqst *rqstp, struct svc_xprt *xprt)
327 memcpy(&rqstp->rq_addr, &xprt->xpt_remote, xprt->xpt_remotelen);
328 rqstp->rq_addrlen = xprt->xpt_remotelen;
334 memcpy(&rqstp->rq_daddr, &xprt->xpt_local, xprt->xpt_locallen);
335 rqstp->rq_daddrlen = xprt->xpt_locallen;
341 * @rqstp: svc_rqst struct containing address to print
346 char *svc_print_addr(struct svc_rqst *rqstp, char *buf, size_t len)
348 return __svc_print_addr(svc_addr(rqstp), buf, len);
360 static bool svc_xprt_reserve_slot(struct svc_rqst *rqstp, struct svc_xprt *xprt)
362 if (!test_bit(RQ_DATA, &rqstp->rq_flags)) {
366 set_bit(RQ_DATA, &rqstp->rq_flags);
371 static void svc_xprt_release_slot(struct svc_rqst *rqstp)
373 struct svc_xprt *xprt = rqstp->rq_xprt;
374 if (test_and_clear_bit(RQ_DATA, &rqstp->rq_flags)) {
411 struct svc_rqst *rqstp = NULL;
437 list_for_each_entry_rcu(rqstp, &pool->sp_all_threads, rq_all) {
438 if (test_and_set_bit(RQ_BUSY, &rqstp->rq_flags))
441 rqstp->rq_qtime = ktime_get();
442 wake_up_process(rqstp->rq_task);
446 rqstp = NULL;
450 trace_svc_xprt_do_enqueue(xprt, rqstp);
491 * @rqstp: The request in question
499 void svc_reserve(struct svc_rqst *rqstp, int space)
501 struct svc_xprt *xprt = rqstp->rq_xprt;
503 space += rqstp->rq_res.head[0].iov_len;
505 if (xprt && space < rqstp->rq_reserved) {
506 atomic_sub((rqstp->rq_reserved - space), &xprt->xpt_reserved);
507 rqstp->rq_reserved = space;
514 static void svc_xprt_release(struct svc_rqst *rqstp)
516 struct svc_xprt *xprt = rqstp->rq_xprt;
518 xprt->xpt_ops->xpo_release_rqst(rqstp);
520 kfree(rqstp->rq_deferred);
521 rqstp->rq_deferred = NULL;
523 svc_free_res_pages(rqstp);
524 rqstp->rq_res.page_len = 0;
525 rqstp->rq_res.page_base = 0;
532 if ((rqstp->rq_res.len) > rqstp->rq_reserved)
534 rqstp->rq_reserved,
535 rqstp->rq_res.len);
537 rqstp->rq_res.head[0].iov_len = 0;
538 svc_reserve(rqstp, 0);
539 svc_xprt_release_slot(rqstp);
540 rqstp->rq_xprt = NULL;
553 struct svc_rqst *rqstp;
559 list_for_each_entry_rcu(rqstp, &pool->sp_all_threads, rq_all) {
561 if (test_bit(RQ_BUSY, &rqstp->rq_flags))
564 wake_up_process(rqstp->rq_task);
565 trace_svc_wake_up(rqstp->rq_task->pid);
642 static int svc_alloc_arg(struct svc_rqst *rqstp)
644 struct svc_serv *serv = rqstp->rq_server;
658 while (rqstp->rq_pages[i] == NULL) {
668 rqstp->rq_pages[i] = p;
670 rqstp->rq_page_end = &rqstp->rq_pages[i];
671 rqstp->rq_pages[i++] = NULL; /* this might be seen in nfs_read_actor */
674 arg = &rqstp->rq_arg;
675 arg->head[0].iov_base = page_address(rqstp->rq_pages[0]);
677 arg->pages = rqstp->rq_pages + 1;
687 rqst_should_sleep(struct svc_rqst *rqstp)
689 struct svc_pool *pool = rqstp->rq_pool;
710 static struct svc_xprt *svc_get_next_xprt(struct svc_rqst *rqstp, long timeout)
712 struct svc_pool *pool = rqstp->rq_pool;
716 WARN_ON_ONCE(rqstp->rq_xprt);
718 rqstp->rq_xprt = svc_xprt_dequeue(pool);
719 if (rqstp->rq_xprt)
729 clear_bit(RQ_BUSY, &rqstp->rq_flags);
732 if (likely(rqst_should_sleep(rqstp)))
739 set_bit(RQ_BUSY, &rqstp->rq_flags);
741 rqstp->rq_xprt = svc_xprt_dequeue(pool);
742 if (rqstp->rq_xprt)
756 rqstp->rq_chandle.thread_wait = 5*HZ;
758 rqstp->rq_chandle.thread_wait = 1*HZ;
759 trace_svc_xprt_dequeue(rqstp);
760 return rqstp->rq_xprt;
779 static int svc_handle_xprt(struct svc_rqst *rqstp, struct svc_xprt *xprt)
781 struct svc_serv *serv = rqstp->rq_server;
806 } else if (svc_xprt_reserve_slot(rqstp, xprt)) {
809 rqstp, rqstp->rq_pool->sp_id, xprt,
811 rqstp->rq_deferred = svc_deferred_dequeue(xprt);
812 if (rqstp->rq_deferred)
813 len = svc_deferred_recv(rqstp);
815 len = xprt->xpt_ops->xpo_recvfrom(rqstp);
817 trace_svc_xdr_recvfrom(rqstp, &rqstp->rq_arg);
818 rqstp->rq_stime = ktime_get();
819 rqstp->rq_reserved = serv->sv_max_mesg;
820 atomic_add(rqstp->rq_reserved, &xprt->xpt_reserved);
834 int svc_recv(struct svc_rqst *rqstp, long timeout)
837 struct svc_serv *serv = rqstp->rq_server;
840 err = svc_alloc_arg(rqstp);
850 xprt = svc_get_next_xprt(rqstp, timeout);
856 len = svc_handle_xprt(rqstp, xprt);
865 xprt->xpt_ops->xpo_secure_port(rqstp);
866 rqstp->rq_chandle.defer = svc_defer;
867 rqstp->rq_xid = svc_getu32(&rqstp->rq_arg.head[0]);
871 trace_svc_recv(rqstp, len);
874 rqstp->rq_res.len = 0;
875 svc_xprt_release(rqstp);
884 void svc_drop(struct svc_rqst *rqstp)
886 trace_svc_drop(rqstp);
887 svc_xprt_release(rqstp);
894 int svc_send(struct svc_rqst *rqstp)
900 xprt = rqstp->rq_xprt;
905 xb = &rqstp->rq_res;
909 trace_svc_xdr_sendto(rqstp, xb);
910 trace_svc_stats_latency(rqstp);
912 len = xprt->xpt_ops->xpo_sendto(rqstp);
914 trace_svc_send(rqstp, len);
915 svc_xprt_release(rqstp);
1172 struct svc_rqst *rqstp = container_of(req, struct svc_rqst, rq_chandle);
1175 if (rqstp->rq_arg.page_len || !test_bit(RQ_USEDEFERRAL, &rqstp->rq_flags))
1177 if (rqstp->rq_deferred) {
1178 dr = rqstp->rq_deferred;
1179 rqstp->rq_deferred = NULL;
1184 size = sizeof(struct svc_deferred_req) + rqstp->rq_arg.len;
1189 dr->handle.owner = rqstp->rq_server;
1190 dr->prot = rqstp->rq_prot;
1191 memcpy(&dr->addr, &rqstp->rq_addr, rqstp->rq_addrlen);
1192 dr->addrlen = rqstp->rq_addrlen;
1193 dr->daddr = rqstp->rq_daddr;
1194 dr->argslen = rqstp->rq_arg.len >> 2;
1195 dr->xprt_hlen = rqstp->rq_xprt_hlen;
1198 skip = rqstp->rq_arg.len - rqstp->rq_arg.head[0].iov_len;
1199 memcpy(dr->args, rqstp->rq_arg.head[0].iov_base - skip,
1202 trace_svc_defer(rqstp);
1203 svc_xprt_get(rqstp->rq_xprt);
1204 dr->xprt = rqstp->rq_xprt;
1205 set_bit(RQ_DROPME, &rqstp->rq_flags);
1214 static noinline int svc_deferred_recv(struct svc_rqst *rqstp)
1216 struct svc_deferred_req *dr = rqstp->rq_deferred;
1221 rqstp->rq_arg.head[0].iov_base = dr->args + (dr->xprt_hlen>>2);
1223 rqstp->rq_arg.head[0].iov_len = (dr->argslen<<2) - dr->xprt_hlen;
1224 rqstp->rq_arg.page_len = 0;
1226 rqstp->rq_arg.len = dr->argslen<<2;
1227 rqstp->rq_prot = dr->prot;
1228 memcpy(&rqstp->rq_addr, &dr->addr, dr->addrlen);
1229 rqstp->rq_addrlen = dr->addrlen;
1231 rqstp->rq_xprt_hlen = dr->xprt_hlen;
1232 rqstp->rq_daddr = dr->daddr;
1233 rqstp->rq_respages = rqstp->rq_pages;