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 sysfs_emit(page, "%d\n",
56 rtrs_clt_get_max_reconnect_attempts(clt));
59 static ssize_t max_reconnect_attempts_store(struct device *dev,
60 struct device_attribute *attr,
66 struct rtrs_clt *clt = container_of(dev, struct rtrs_clt, dev);
68 ret = kstrtoint(buf, 10, &value);
70 rtrs_err(clt, "%s: failed to convert string '%s' to int\n",
71 attr->attr.name, buf);
74 if (value > MAX_MAX_RECONN_ATT ||
75 value < MIN_MAX_RECONN_ATT) {
77 "%s: invalid range (provided: '%s', accepted: min: %d, max: %d)\n",
78 attr->attr.name, buf, MIN_MAX_RECONN_ATT,
82 rtrs_clt_set_max_reconnect_attempts(clt, value);
87 static DEVICE_ATTR_RW(max_reconnect_attempts);
89 static ssize_t mpath_policy_show(struct device *dev,
90 struct device_attribute *attr,
95 clt = container_of(dev, struct rtrs_clt, dev);
97 switch (clt->mp_policy) {
99 return sysfs_emit(page, "round-robin (RR: %d)\n",
101 case MP_POLICY_MIN_INFLIGHT:
102 return sysfs_emit(page, "min-inflight (MI: %d)\n",
105 return sysfs_emit(page, "Unknown (%d)\n", clt->mp_policy);
109 static ssize_t mpath_policy_store(struct device *dev,
110 struct device_attribute *attr,
114 struct rtrs_clt *clt;
118 clt = container_of(dev, struct rtrs_clt, dev);
120 ret = kstrtoint(buf, 10, &value);
121 if (!ret && (value == MP_POLICY_RR ||
122 value == MP_POLICY_MIN_INFLIGHT)) {
123 clt->mp_policy = value;
127 if (!strncasecmp(buf, "round-robin", 11) ||
128 !strncasecmp(buf, "rr", 2))
129 clt->mp_policy = MP_POLICY_RR;
130 else if (!strncasecmp(buf, "min-inflight", 12) ||
131 !strncasecmp(buf, "mi", 2))
132 clt->mp_policy = MP_POLICY_MIN_INFLIGHT;
139 static DEVICE_ATTR_RW(mpath_policy);
141 static ssize_t add_path_show(struct device *dev,
142 struct device_attribute *attr, char *page)
146 "Usage: echo [<source addr>@]<destination addr> > %s\n\n*addr ::= [ ip:<ipv4|ipv6> | gid:<gid> ]\n",
150 static ssize_t add_path_store(struct device *dev,
151 struct device_attribute *attr,
152 const char *buf, size_t count)
154 struct sockaddr_storage srcaddr, dstaddr;
155 struct rtrs_addr addr = {
159 struct rtrs_clt *clt;
164 clt = container_of(dev, struct rtrs_clt, dev);
166 nl = strchr(buf, '\n');
171 err = rtrs_addr_to_sockaddr(buf, len, clt->port, &addr);
175 err = rtrs_clt_create_path_from_sysfs(clt, &addr);
182 static DEVICE_ATTR_RW(add_path);
184 static ssize_t rtrs_clt_state_show(struct kobject *kobj,
185 struct kobj_attribute *attr, char *page)
187 struct rtrs_clt_sess *sess;
189 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
190 if (sess->state == RTRS_CLT_CONNECTED)
191 return sysfs_emit(page, "connected\n");
193 return sysfs_emit(page, "disconnected\n");
196 static struct kobj_attribute rtrs_clt_state_attr =
197 __ATTR(state, 0444, rtrs_clt_state_show, NULL);
199 static ssize_t rtrs_clt_reconnect_show(struct kobject *kobj,
200 struct kobj_attribute *attr, char *buf)
202 return sysfs_emit(buf, "Usage: echo 1 > %s\n", attr->attr.name);
205 static ssize_t rtrs_clt_reconnect_store(struct kobject *kobj,
206 struct kobj_attribute *attr,
207 const char *buf, size_t count)
209 struct rtrs_clt_sess *sess;
212 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
213 if (!sysfs_streq(buf, "1")) {
214 rtrs_err(sess->clt, "%s: unknown value: '%s'\n",
215 attr->attr.name, buf);
218 ret = rtrs_clt_reconnect_from_sysfs(sess);
225 static struct kobj_attribute rtrs_clt_reconnect_attr =
226 __ATTR(reconnect, 0644, rtrs_clt_reconnect_show,
227 rtrs_clt_reconnect_store);
229 static ssize_t rtrs_clt_disconnect_show(struct kobject *kobj,
230 struct kobj_attribute *attr, char *buf)
232 return sysfs_emit(buf, "Usage: echo 1 > %s\n", attr->attr.name);
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, char *buf)
262 return sysfs_emit(buf, "Usage: echo 1 > %s\n", attr->attr.name);
265 static ssize_t rtrs_clt_remove_path_store(struct kobject *kobj,
266 struct kobj_attribute *attr,
267 const char *buf, size_t count)
269 struct rtrs_clt_sess *sess;
272 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
273 if (!sysfs_streq(buf, "1")) {
274 rtrs_err(sess->clt, "%s: unknown value: '%s'\n",
275 attr->attr.name, buf);
278 ret = rtrs_clt_remove_path_from_sysfs(sess, &attr->attr);
285 static struct kobj_attribute rtrs_clt_remove_path_attr =
286 __ATTR(remove_path, 0644, rtrs_clt_remove_path_show,
287 rtrs_clt_remove_path_store);
289 STAT_ATTR(struct rtrs_clt_stats, cpu_migration,
290 rtrs_clt_stats_migration_cnt_to_str,
291 rtrs_clt_reset_cpu_migr_stats);
293 STAT_ATTR(struct rtrs_clt_stats, reconnects,
294 rtrs_clt_stats_reconnects_to_str,
295 rtrs_clt_reset_reconnects_stat);
297 STAT_ATTR(struct rtrs_clt_stats, rdma,
298 rtrs_clt_stats_rdma_to_str,
299 rtrs_clt_reset_rdma_stats);
301 STAT_ATTR(struct rtrs_clt_stats, reset_all,
302 rtrs_clt_reset_all_help,
303 rtrs_clt_reset_all_stats);
305 static struct attribute *rtrs_clt_stats_attrs[] = {
306 &cpu_migration_attr.attr,
307 &reconnects_attr.attr,
309 &reset_all_attr.attr,
313 static const struct attribute_group rtrs_clt_stats_attr_group = {
314 .attrs = rtrs_clt_stats_attrs,
317 static ssize_t rtrs_clt_hca_port_show(struct kobject *kobj,
318 struct kobj_attribute *attr,
321 struct rtrs_clt_sess *sess;
323 sess = container_of(kobj, typeof(*sess), kobj);
325 return sysfs_emit(page, "%u\n", sess->hca_port);
328 static struct kobj_attribute rtrs_clt_hca_port_attr =
329 __ATTR(hca_port, 0444, rtrs_clt_hca_port_show, NULL);
331 static ssize_t rtrs_clt_hca_name_show(struct kobject *kobj,
332 struct kobj_attribute *attr,
335 struct rtrs_clt_sess *sess;
337 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
339 return sysfs_emit(page, "%s\n", sess->hca_name);
342 static struct kobj_attribute rtrs_clt_hca_name_attr =
343 __ATTR(hca_name, 0444, rtrs_clt_hca_name_show, NULL);
345 static ssize_t rtrs_clt_src_addr_show(struct kobject *kobj,
346 struct kobj_attribute *attr,
349 struct rtrs_clt_sess *sess;
352 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
353 len = sockaddr_to_str((struct sockaddr *)&sess->s.src_addr, page,
355 len += sysfs_emit_at(page, len, "\n");
359 static struct kobj_attribute rtrs_clt_src_addr_attr =
360 __ATTR(src_addr, 0444, rtrs_clt_src_addr_show, NULL);
362 static ssize_t rtrs_clt_dst_addr_show(struct kobject *kobj,
363 struct kobj_attribute *attr,
366 struct rtrs_clt_sess *sess;
369 sess = container_of(kobj, struct rtrs_clt_sess, kobj);
370 len = sockaddr_to_str((struct sockaddr *)&sess->s.dst_addr, page,
372 len += sysfs_emit_at(page, len, "\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(struct rtrs_clt *clt)
476 sysfs_remove_group(&clt->dev.kobj, &rtrs_clt_attr_group);
478 if (clt->kobj_paths) {
479 kobject_del(clt->kobj_paths);
480 kobject_put(clt->kobj_paths);