Lines Matching full:vc

17 bool afs_begin_vlserver_operation(struct afs_vl_cursor *vc, struct afs_cell *cell,  in afs_begin_vlserver_operation()  argument
22 memset(vc, 0, sizeof(*vc)); in afs_begin_vlserver_operation()
23 vc->cell = cell; in afs_begin_vlserver_operation()
24 vc->key = key; in afs_begin_vlserver_operation()
25 vc->cumul_error.error = -EDESTADDRREQ; in afs_begin_vlserver_operation()
26 vc->nr_iterations = -1; in afs_begin_vlserver_operation()
29 vc->cumul_error.error = -EINTR; in afs_begin_vlserver_operation()
30 vc->flags |= AFS_VL_CURSOR_STOP; in afs_begin_vlserver_operation()
34 vc->debug_id = atomic_inc_return(&debug_ids); in afs_begin_vlserver_operation()
42 static bool afs_start_vl_iteration(struct afs_vl_cursor *vc) in afs_start_vl_iteration() argument
44 struct afs_cell *cell = vc->cell; in afs_start_vl_iteration()
58 vc->cumul_error.error = -ERESTARTSYS; in afs_start_vl_iteration()
66 vc->cumul_error.error = -ENOENT; in afs_start_vl_iteration()
71 vc->cumul_error.error = -EDESTADDRREQ; in afs_start_vl_iteration()
77 vc->server_list = afs_get_vlserverlist( in afs_start_vl_iteration()
81 if (!vc->server_list->nr_servers) in afs_start_vl_iteration()
84 vc->untried_servers = (1UL << vc->server_list->nr_servers) - 1; in afs_start_vl_iteration()
85 vc->server_index = -1; in afs_start_vl_iteration()
93 bool afs_select_vlserver(struct afs_vl_cursor *vc) in afs_select_vlserver() argument
95 struct afs_addr_list *alist = vc->alist; in afs_select_vlserver()
99 s32 abort_code = vc->call_abort_code; in afs_select_vlserver()
100 int error = vc->call_error, i; in afs_select_vlserver()
102 vc->nr_iterations++; in afs_select_vlserver()
104 _enter("VC=%x+%x,%d{%lx},%d{%lx},%d,%d", in afs_select_vlserver()
105 vc->debug_id, vc->nr_iterations, vc->server_index, vc->untried_servers, in afs_select_vlserver()
106 vc->addr_index, vc->addr_tried, in afs_select_vlserver()
109 if (vc->flags & AFS_VL_CURSOR_STOP) { in afs_select_vlserver()
114 if (vc->nr_iterations == 0) in afs_select_vlserver()
117 WRITE_ONCE(alist->addrs[vc->addr_index].last_error, error); in afs_select_vlserver()
124 vc->cumul_error.error = error; in afs_select_vlserver()
125 vc->flags |= AFS_VL_CURSOR_STOP; in afs_select_vlserver()
126 _leave(" = f [okay/local %d]", vc->cumul_error.error); in afs_select_vlserver()
138 afs_prioritise_error(&vc->cumul_error, -EREMOTEIO, abort_code); in afs_select_vlserver()
139 //write_lock(&vc->cell->vl_servers_lock); in afs_select_vlserver()
140 //vc->server_list->weird_mask |= 1 << vc->server_index; in afs_select_vlserver()
141 //write_unlock(&vc->cell->vl_servers_lock); in afs_select_vlserver()
145 afs_prioritise_error(&vc->cumul_error, error, abort_code); in afs_select_vlserver()
158 afs_prioritise_error(&vc->cumul_error, error, 0); in afs_select_vlserver()
163 afs_prioritise_error(&vc->cumul_error, error, 0); in afs_select_vlserver()
164 vc->flags |= AFS_VL_CURSOR_RETRY; in afs_select_vlserver()
174 if (vc->call_responded && in afs_select_vlserver()
175 vc->addr_index != vc->alist->preferred && in afs_select_vlserver()
176 test_bit(alist->preferred, &vc->addr_tried)) in afs_select_vlserver()
177 WRITE_ONCE(alist->preferred, vc->addr_index); in afs_select_vlserver()
179 alist = vc->alist = NULL; in afs_select_vlserver()
181 afs_put_vlserverlist(vc->cell->net, vc->server_list); in afs_select_vlserver()
182 vc->server_list = NULL; in afs_select_vlserver()
183 if (vc->flags & AFS_VL_CURSOR_RETRIED) in afs_select_vlserver()
185 vc->flags |= AFS_VL_CURSOR_RETRIED; in afs_select_vlserver()
190 if (!afs_start_vl_iteration(vc)) in afs_select_vlserver()
193 error = afs_send_vl_probes(vc->cell->net, vc->key, vc->server_list); in afs_select_vlserver()
195 afs_prioritise_error(&vc->cumul_error, error, 0); in afs_select_vlserver()
200 _debug("pick [%lx]", vc->untried_servers); in afs_select_vlserver()
203 error = afs_wait_for_vl_probes(vc->server_list, vc->untried_servers); in afs_select_vlserver()
205 afs_prioritise_error(&vc->cumul_error, error, 0); in afs_select_vlserver()
210 vc->server_index = vc->server_list->preferred; in afs_select_vlserver()
211 if (test_bit(vc->server_index, &vc->untried_servers)) in afs_select_vlserver()
214 vc->server_index = -1; in afs_select_vlserver()
216 for (i = 0; i < vc->server_list->nr_servers; i++) { in afs_select_vlserver()
217 struct afs_vlserver *s = vc->server_list->servers[i].server; in afs_select_vlserver()
219 if (!test_bit(i, &vc->untried_servers) || in afs_select_vlserver()
223 vc->server_index = i; in afs_select_vlserver()
228 if (vc->server_index == -1) in afs_select_vlserver()
232 _debug("use %d", vc->server_index); in afs_select_vlserver()
233 __clear_bit(vc->server_index, &vc->untried_servers); in afs_select_vlserver()
239 vlserver = vc->server_list->servers[vc->server_index].server; in afs_select_vlserver()
240 vc->server = vlserver; in afs_select_vlserver()
247 vc->alist = afs_get_addrlist(alist, afs_alist_trace_get_vlrotate_set); in afs_select_vlserver()
250 vc->addr_tried = 0; in afs_select_vlserver()
251 vc->addr_index = -1; in afs_select_vlserver()
259 vc->addr_index = READ_ONCE(alist->preferred); in afs_select_vlserver()
261 _debug("%lx-%lx-%lx,%d", set, failed, vc->addr_tried, vc->addr_index); in afs_select_vlserver()
263 set &= ~(failed | vc->addr_tried); in afs_select_vlserver()
268 if (!test_bit(vc->addr_index, &set)) in afs_select_vlserver()
269 vc->addr_index = __ffs(set); in afs_select_vlserver()
271 set_bit(vc->addr_index, &vc->addr_tried); in afs_select_vlserver()
272 vc->alist = alist; in afs_select_vlserver()
274 _debug("VL address %d/%d", vc->addr_index, alist->nr_addrs); in afs_select_vlserver()
276 vc->call_responded = false; in afs_select_vlserver()
277 _leave(" = t %pISpc", rxrpc_kernel_remote_addr(alist->addrs[vc->addr_index].peer)); in afs_select_vlserver()
283 if (vc->call_responded && in afs_select_vlserver()
284 vc->addr_index != alist->preferred && in afs_select_vlserver()
285 test_bit(alist->preferred, &vc->addr_tried)) in afs_select_vlserver()
286 WRITE_ONCE(alist->preferred, vc->addr_index); in afs_select_vlserver()
288 alist = vc->alist = NULL; in afs_select_vlserver()
295 if (vc->flags & AFS_VL_CURSOR_RETRY) in afs_select_vlserver()
298 for (i = 0; i < vc->server_list->nr_servers; i++) { in afs_select_vlserver()
299 struct afs_vlserver *s = vc->server_list->servers[i].server; in afs_select_vlserver()
302 vc->cumul_error.responded = true; in afs_select_vlserver()
303 afs_prioritise_error(&vc->cumul_error, READ_ONCE(s->probe.error), in afs_select_vlserver()
309 if (vc->call_responded && in afs_select_vlserver()
310 vc->addr_index != alist->preferred && in afs_select_vlserver()
311 test_bit(alist->preferred, &vc->addr_tried)) in afs_select_vlserver()
312 WRITE_ONCE(alist->preferred, vc->addr_index); in afs_select_vlserver()
314 alist = vc->alist = NULL; in afs_select_vlserver()
316 vc->flags |= AFS_VL_CURSOR_STOP; in afs_select_vlserver()
317 _leave(" = f [failed %d]", vc->cumul_error.error); in afs_select_vlserver()
324 static void afs_vl_dump_edestaddrreq(const struct afs_vl_cursor *vc) in afs_vl_dump_edestaddrreq() argument
326 struct afs_cell *cell = vc->cell; in afs_vl_dump_edestaddrreq()
339 pr_notice("VC: ut=%lx ix=%u ni=%hu fl=%hx err=%hd\n", in afs_vl_dump_edestaddrreq()
340 vc->untried_servers, vc->server_index, vc->nr_iterations, in afs_vl_dump_edestaddrreq()
341 vc->flags, vc->cumul_error.error); in afs_vl_dump_edestaddrreq()
342 pr_notice("VC: call er=%d ac=%d r=%u\n", in afs_vl_dump_edestaddrreq()
343 vc->call_error, vc->call_abort_code, vc->call_responded); in afs_vl_dump_edestaddrreq()
345 if (vc->server_list) { in afs_vl_dump_edestaddrreq()
346 const struct afs_vlserver_list *sl = vc->server_list; in afs_vl_dump_edestaddrreq()
347 pr_notice("VC: SL nr=%u ix=%u\n", in afs_vl_dump_edestaddrreq()
351 pr_notice("VC: server %s+%hu fl=%lx E=%hd\n", in afs_vl_dump_edestaddrreq()
356 pr_notice("VC: - nr=%u/%u/%u pf=%u\n", in afs_vl_dump_edestaddrreq()
359 pr_notice("VC: - R=%lx F=%lx\n", in afs_vl_dump_edestaddrreq()
361 if (a == vc->alist) in afs_vl_dump_edestaddrreq()
362 pr_notice("VC: - current\n"); in afs_vl_dump_edestaddrreq()
367 pr_notice("AC: t=%lx ax=%u\n", vc->addr_tried, vc->addr_index); in afs_vl_dump_edestaddrreq()
374 int afs_end_vlserver_operation(struct afs_vl_cursor *vc) in afs_end_vlserver_operation() argument
376 struct afs_net *net = vc->cell->net; in afs_end_vlserver_operation()
378 _enter("VC=%x+%x", vc->debug_id, vc->nr_iterations); in afs_end_vlserver_operation()
380 switch (vc->cumul_error.error) { in afs_end_vlserver_operation()
385 afs_vl_dump_edestaddrreq(vc); in afs_end_vlserver_operation()
389 if (vc->alist) { in afs_end_vlserver_operation()
390 if (vc->call_responded && in afs_end_vlserver_operation()
391 vc->addr_index != vc->alist->preferred && in afs_end_vlserver_operation()
392 test_bit(vc->alist->preferred, &vc->addr_tried)) in afs_end_vlserver_operation()
393 WRITE_ONCE(vc->alist->preferred, vc->addr_index); in afs_end_vlserver_operation()
394 afs_put_addrlist(vc->alist, afs_alist_trace_put_vlrotate_end); in afs_end_vlserver_operation()
395 vc->alist = NULL; in afs_end_vlserver_operation()
397 afs_put_vlserverlist(net, vc->server_list); in afs_end_vlserver_operation()
398 return vc->cumul_error.error; in afs_end_vlserver_operation()