1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved.
6 * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
7 * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved.
10 #define pr_fmt(fmt) KBUILD_MODNAME " L" __stringify(__LINE__) ": " fmt
16 #define MIN_MAX_RECONN_ATT -1
17 #define MAX_MAX_RECONN_ATT 9999
19 static void rtrs_clt_sess_release(struct kobject *kobj)
21 struct rtrs_clt_sess *sess;
23 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
28 static struct kobj_type ktype_sess = {
29 .sysfs_ops = &kobj_sysfs_ops,
30 .release = rtrs_clt_sess_release
33 static void rtrs_clt_sess_stats_release(struct kobject *kobj)
35 struct rtrs_clt_stats *stats;
37 stats = container_of(kobj, struct rtrs_clt_stats, kobj_stats);
39 free_percpu(stats->pcpu_stats);
44 static struct kobj_type ktype_stats = {
45 .sysfs_ops = &kobj_sysfs_ops,
46 .release = rtrs_clt_sess_stats_release,
49 static ssize_t max_reconnect_attempts_show(struct device *dev,
50 struct device_attribute *attr,
53 struct rtrs_clt *clt = container_of(dev, struct rtrs_clt, dev);
55 return sprintf(page, "%d\n", rtrs_clt_get_max_reconnect_attempts(clt));
58 static ssize_t max_reconnect_attempts_store(struct device *dev,
59 struct device_attribute *attr,
65 struct rtrs_clt *clt = container_of(dev, struct rtrs_clt, dev);
67 ret = kstrtoint(buf, 10, &value);
69 rtrs_err(clt, "%s: failed to convert string '%s' to int\n",
70 attr->attr.name, buf);
73 if (value > MAX_MAX_RECONN_ATT ||
74 value < MIN_MAX_RECONN_ATT) {
76 "%s: invalid range (provided: '%s', accepted: min: %d, max: %d)\n",
77 attr->attr.name, buf, MIN_MAX_RECONN_ATT,
81 rtrs_clt_set_max_reconnect_attempts(clt, value);
86 static DEVICE_ATTR_RW(max_reconnect_attempts);
88 static ssize_t mpath_policy_show(struct device *dev,
89 struct device_attribute *attr,
94 clt = container_of(dev, struct rtrs_clt, dev);
96 switch (clt->mp_policy) {
98 return sprintf(page, "round-robin (RR: %d)\n", clt->mp_policy);
99 case MP_POLICY_MIN_INFLIGHT:
100 return sprintf(page, "min-inflight (MI: %d)\n", clt->mp_policy);
102 return sprintf(page, "Unknown (%d)\n", clt->mp_policy);
106 static ssize_t mpath_policy_store(struct device *dev,
107 struct device_attribute *attr,
111 struct rtrs_clt *clt;
115 clt = container_of(dev, struct rtrs_clt, dev);
117 ret = kstrtoint(buf, 10, &value);
118 if (!ret && (value == MP_POLICY_RR ||
119 value == MP_POLICY_MIN_INFLIGHT)) {
120 clt->mp_policy = value;
124 if (!strncasecmp(buf, "round-robin", 11) ||
125 !strncasecmp(buf, "rr", 2))
126 clt->mp_policy = MP_POLICY_RR;
127 else if (!strncasecmp(buf, "min-inflight", 12) ||
128 !strncasecmp(buf, "mi", 2))
129 clt->mp_policy = MP_POLICY_MIN_INFLIGHT;
136 static DEVICE_ATTR_RW(mpath_policy);
138 static ssize_t add_path_show(struct device *dev,
139 struct device_attribute *attr, char *page)
141 return scnprintf(page, PAGE_SIZE,
142 "Usage: echo [<source addr>@]<destination addr> > %s\n\n*addr ::= [ ip:<ipv4|ipv6> | gid:<gid> ]\n",
146 static ssize_t add_path_store(struct device *dev,
147 struct device_attribute *attr,
148 const char *buf, size_t count)
150 struct sockaddr_storage srcaddr, dstaddr;
151 struct rtrs_addr addr = {
155 struct rtrs_clt *clt;
160 clt = container_of(dev, struct rtrs_clt, dev);
162 nl = strchr(buf, '\n');
167 err = rtrs_addr_to_sockaddr(buf, len, clt->port, &addr);
171 err = rtrs_clt_create_path_from_sysfs(clt, &addr);
178 static DEVICE_ATTR_RW(add_path);
180 static ssize_t rtrs_clt_state_show(struct kobject *kobj,
181 struct kobj_attribute *attr, char *page)
183 struct rtrs_clt_sess *sess;
185 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
186 if (sess->state == RTRS_CLT_CONNECTED)
187 return sprintf(page, "connected\n");
189 return sprintf(page, "disconnected\n");
192 static struct kobj_attribute rtrs_clt_state_attr =
193 __ATTR(state, 0444, rtrs_clt_state_show, NULL);
195 static ssize_t rtrs_clt_reconnect_show(struct kobject *kobj,
196 struct kobj_attribute *attr,
199 return scnprintf(page, PAGE_SIZE, "Usage: echo 1 > %s\n",
203 static ssize_t rtrs_clt_reconnect_store(struct kobject *kobj,
204 struct kobj_attribute *attr,
205 const char *buf, size_t count)
207 struct rtrs_clt_sess *sess;
210 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
211 if (!sysfs_streq(buf, "1")) {
212 rtrs_err(sess->clt, "%s: unknown value: '%s'\n",
213 attr->attr.name, buf);
216 ret = rtrs_clt_reconnect_from_sysfs(sess);
223 static struct kobj_attribute rtrs_clt_reconnect_attr =
224 __ATTR(reconnect, 0644, rtrs_clt_reconnect_show,
225 rtrs_clt_reconnect_store);
227 static ssize_t rtrs_clt_disconnect_show(struct kobject *kobj,
228 struct kobj_attribute *attr,
231 return scnprintf(page, PAGE_SIZE, "Usage: echo 1 > %s\n",
235 static ssize_t rtrs_clt_disconnect_store(struct kobject *kobj,
236 struct kobj_attribute *attr,
237 const char *buf, size_t count)
239 struct rtrs_clt_sess *sess;
242 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
243 if (!sysfs_streq(buf, "1")) {
244 rtrs_err(sess->clt, "%s: unknown value: '%s'\n",
245 attr->attr.name, buf);
248 ret = rtrs_clt_disconnect_from_sysfs(sess);
255 static struct kobj_attribute rtrs_clt_disconnect_attr =
256 __ATTR(disconnect, 0644, rtrs_clt_disconnect_show,
257 rtrs_clt_disconnect_store);
259 static ssize_t rtrs_clt_remove_path_show(struct kobject *kobj,
260 struct kobj_attribute *attr,
263 return scnprintf(page, PAGE_SIZE, "Usage: echo 1 > %s\n",
267 static ssize_t rtrs_clt_remove_path_store(struct kobject *kobj,
268 struct kobj_attribute *attr,
269 const char *buf, size_t count)
271 struct rtrs_clt_sess *sess;
274 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
275 if (!sysfs_streq(buf, "1")) {
276 rtrs_err(sess->clt, "%s: unknown value: '%s'\n",
277 attr->attr.name, buf);
280 ret = rtrs_clt_remove_path_from_sysfs(sess, &attr->attr);
287 static struct kobj_attribute rtrs_clt_remove_path_attr =
288 __ATTR(remove_path, 0644, rtrs_clt_remove_path_show,
289 rtrs_clt_remove_path_store);
291 STAT_ATTR(struct rtrs_clt_stats, cpu_migration,
292 rtrs_clt_stats_migration_cnt_to_str,
293 rtrs_clt_reset_cpu_migr_stats);
295 STAT_ATTR(struct rtrs_clt_stats, reconnects,
296 rtrs_clt_stats_reconnects_to_str,
297 rtrs_clt_reset_reconnects_stat);
299 STAT_ATTR(struct rtrs_clt_stats, rdma,
300 rtrs_clt_stats_rdma_to_str,
301 rtrs_clt_reset_rdma_stats);
303 STAT_ATTR(struct rtrs_clt_stats, reset_all,
304 rtrs_clt_reset_all_help,
305 rtrs_clt_reset_all_stats);
307 static struct attribute *rtrs_clt_stats_attrs[] = {
308 &cpu_migration_attr.attr,
309 &reconnects_attr.attr,
311 &reset_all_attr.attr,
315 static const struct attribute_group rtrs_clt_stats_attr_group = {
316 .attrs = rtrs_clt_stats_attrs,
319 static ssize_t rtrs_clt_hca_port_show(struct kobject *kobj,
320 struct kobj_attribute *attr,
323 struct rtrs_clt_sess *sess;
325 sess = container_of(kobj, typeof(*sess), kobj);
327 return scnprintf(page, PAGE_SIZE, "%u\n", sess->hca_port);
330 static struct kobj_attribute rtrs_clt_hca_port_attr =
331 __ATTR(hca_port, 0444, rtrs_clt_hca_port_show, NULL);
333 static ssize_t rtrs_clt_hca_name_show(struct kobject *kobj,
334 struct kobj_attribute *attr,
337 struct rtrs_clt_sess *sess;
339 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
341 return scnprintf(page, PAGE_SIZE, "%s\n", sess->hca_name);
344 static struct kobj_attribute rtrs_clt_hca_name_attr =
345 __ATTR(hca_name, 0444, rtrs_clt_hca_name_show, NULL);
347 static ssize_t rtrs_clt_src_addr_show(struct kobject *kobj,
348 struct kobj_attribute *attr,
351 struct rtrs_clt_sess *sess;
354 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
355 cnt = sockaddr_to_str((struct sockaddr *)&sess->s.src_addr,
357 return cnt + scnprintf(page + cnt, PAGE_SIZE - cnt, "\n");
360 static struct kobj_attribute rtrs_clt_src_addr_attr =
361 __ATTR(src_addr, 0444, rtrs_clt_src_addr_show, NULL);
363 static ssize_t rtrs_clt_dst_addr_show(struct kobject *kobj,
364 struct kobj_attribute *attr,
367 struct rtrs_clt_sess *sess;
370 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
371 cnt = sockaddr_to_str((struct sockaddr *)&sess->s.dst_addr,
373 return cnt + scnprintf(page + cnt, PAGE_SIZE - cnt, "\n");
376 static struct kobj_attribute rtrs_clt_dst_addr_attr =
377 __ATTR(dst_addr, 0444, rtrs_clt_dst_addr_show, NULL);
379 static struct attribute *rtrs_clt_sess_attrs[] = {
380 &rtrs_clt_hca_name_attr.attr,
381 &rtrs_clt_hca_port_attr.attr,
382 &rtrs_clt_src_addr_attr.attr,
383 &rtrs_clt_dst_addr_attr.attr,
384 &rtrs_clt_state_attr.attr,
385 &rtrs_clt_reconnect_attr.attr,
386 &rtrs_clt_disconnect_attr.attr,
387 &rtrs_clt_remove_path_attr.attr,
391 static const struct attribute_group rtrs_clt_sess_attr_group = {
392 .attrs = rtrs_clt_sess_attrs,
395 int rtrs_clt_create_sess_files(struct rtrs_clt_sess *sess)
397 struct rtrs_clt *clt = sess->clt;
401 cnt = sockaddr_to_str((struct sockaddr *)&sess->s.src_addr,
403 cnt += scnprintf(str + cnt, sizeof(str) - cnt, "@");
404 sockaddr_to_str((struct sockaddr *)&sess->s.dst_addr,
405 str + cnt, sizeof(str) - cnt);
407 err = kobject_init_and_add(&sess->kobj, &ktype_sess, clt->kobj_paths,
410 pr_err("kobject_init_and_add: %d\n", err);
411 kobject_put(&sess->kobj);
414 err = sysfs_create_group(&sess->kobj, &rtrs_clt_sess_attr_group);
416 pr_err("sysfs_create_group(): %d\n", err);
419 err = kobject_init_and_add(&sess->stats->kobj_stats, &ktype_stats,
420 &sess->kobj, "stats");
422 pr_err("kobject_init_and_add: %d\n", err);
423 kobject_put(&sess->stats->kobj_stats);
427 err = sysfs_create_group(&sess->stats->kobj_stats,
428 &rtrs_clt_stats_attr_group);
430 pr_err("failed to create stats sysfs group, err: %d\n", err);
437 kobject_del(&sess->stats->kobj_stats);
438 kobject_put(&sess->stats->kobj_stats);
440 sysfs_remove_group(&sess->kobj, &rtrs_clt_sess_attr_group);
442 kobject_del(&sess->kobj);
443 kobject_put(&sess->kobj);
448 void rtrs_clt_destroy_sess_files(struct rtrs_clt_sess *sess,
449 const struct attribute *sysfs_self)
451 kobject_del(&sess->stats->kobj_stats);
452 kobject_put(&sess->stats->kobj_stats);
454 sysfs_remove_file_self(&sess->kobj, sysfs_self);
455 kobject_del(&sess->kobj);
458 static struct attribute *rtrs_clt_attrs[] = {
459 &dev_attr_max_reconnect_attempts.attr,
460 &dev_attr_mpath_policy.attr,
461 &dev_attr_add_path.attr,
465 static const struct attribute_group rtrs_clt_attr_group = {
466 .attrs = rtrs_clt_attrs,
469 int rtrs_clt_create_sysfs_root_files(struct rtrs_clt *clt)
471 return sysfs_create_group(&clt->dev.kobj, &rtrs_clt_attr_group);
474 void rtrs_clt_destroy_sysfs_root_folders(struct rtrs_clt *clt)
476 if (clt->kobj_paths) {
477 kobject_del(clt->kobj_paths);
478 kobject_put(clt->kobj_paths);
482 void rtrs_clt_destroy_sysfs_root_files(struct rtrs_clt *clt)
484 sysfs_remove_group(&clt->dev.kobj, &rtrs_clt_attr_group);