174678748SOlga Kornievskaia // SPDX-License-Identifier: GPL-2.0 274678748SOlga Kornievskaia /* 374678748SOlga Kornievskaia * Copyright (c) 2020 Anna Schumaker <Anna.Schumaker@Netapp.com> 474678748SOlga Kornievskaia */ 5c441f125SOlga Kornievskaia #include <linux/sunrpc/clnt.h> 674678748SOlga Kornievskaia #include <linux/kobject.h> 7587bc725SOlga Kornievskaia #include <linux/sunrpc/addr.h> 8c1830a63SOlga Kornievskaia #include <linux/sunrpc/xprtsock.h> 9587bc725SOlga Kornievskaia 10c5a382ebSOlga Kornievskaia #include "sysfs.h" 1174678748SOlga Kornievskaia 12587bc725SOlga Kornievskaia struct xprt_addr { 13587bc725SOlga Kornievskaia const char *addr; 14587bc725SOlga Kornievskaia struct rcu_head rcu; 15587bc725SOlga Kornievskaia }; 16587bc725SOlga Kornievskaia 17587bc725SOlga Kornievskaia static void free_xprt_addr(struct rcu_head *head) 18587bc725SOlga Kornievskaia { 19587bc725SOlga Kornievskaia struct xprt_addr *addr = container_of(head, struct xprt_addr, rcu); 20587bc725SOlga Kornievskaia 21587bc725SOlga Kornievskaia kfree(addr->addr); 22587bc725SOlga Kornievskaia kfree(addr); 23587bc725SOlga Kornievskaia } 24587bc725SOlga Kornievskaia 2574678748SOlga Kornievskaia static struct kset *rpc_sunrpc_kset; 26baea9944SOlga Kornievskaia static struct kobject *rpc_sunrpc_client_kobj, *rpc_sunrpc_xprt_switch_kobj; 27c441f125SOlga Kornievskaia 28c441f125SOlga Kornievskaia static void rpc_sysfs_object_release(struct kobject *kobj) 29c441f125SOlga Kornievskaia { 30c441f125SOlga Kornievskaia kfree(kobj); 31c441f125SOlga Kornievskaia } 32c441f125SOlga Kornievskaia 33c441f125SOlga Kornievskaia static const struct kobj_ns_type_operations * 34c441f125SOlga Kornievskaia rpc_sysfs_object_child_ns_type(struct kobject *kobj) 35c441f125SOlga Kornievskaia { 36c441f125SOlga Kornievskaia return &net_ns_type_operations; 37c441f125SOlga Kornievskaia } 38c441f125SOlga Kornievskaia 39c441f125SOlga Kornievskaia static struct kobj_type rpc_sysfs_object_type = { 40c441f125SOlga Kornievskaia .release = rpc_sysfs_object_release, 41c441f125SOlga Kornievskaia .sysfs_ops = &kobj_sysfs_ops, 42c441f125SOlga Kornievskaia .child_ns_type = rpc_sysfs_object_child_ns_type, 43c441f125SOlga Kornievskaia }; 44c441f125SOlga Kornievskaia 45c441f125SOlga Kornievskaia static struct kobject *rpc_sysfs_object_alloc(const char *name, 46c441f125SOlga Kornievskaia struct kset *kset, 47c441f125SOlga Kornievskaia struct kobject *parent) 48c441f125SOlga Kornievskaia { 49c441f125SOlga Kornievskaia struct kobject *kobj; 50c441f125SOlga Kornievskaia 51c441f125SOlga Kornievskaia kobj = kzalloc(sizeof(*kobj), GFP_KERNEL); 52c441f125SOlga Kornievskaia if (kobj) { 53c441f125SOlga Kornievskaia kobj->kset = kset; 54c441f125SOlga Kornievskaia if (kobject_init_and_add(kobj, &rpc_sysfs_object_type, 55c441f125SOlga Kornievskaia parent, "%s", name) == 0) 56c441f125SOlga Kornievskaia return kobj; 57c441f125SOlga Kornievskaia kobject_put(kobj); 58c441f125SOlga Kornievskaia } 59c441f125SOlga Kornievskaia return NULL; 60c441f125SOlga Kornievskaia } 6174678748SOlga Kornievskaia 62587bc725SOlga Kornievskaia static inline struct rpc_xprt * 63587bc725SOlga Kornievskaia rpc_sysfs_xprt_kobj_get_xprt(struct kobject *kobj) 64587bc725SOlga Kornievskaia { 65587bc725SOlga Kornievskaia struct rpc_sysfs_xprt *x = container_of(kobj, 66587bc725SOlga Kornievskaia struct rpc_sysfs_xprt, kobject); 67587bc725SOlga Kornievskaia 68587bc725SOlga Kornievskaia return xprt_get(x->xprt); 69587bc725SOlga Kornievskaia } 70587bc725SOlga Kornievskaia 710e559035SOlga Kornievskaia static inline struct rpc_xprt_switch * 725b7eb784SOlga Kornievskaia rpc_sysfs_xprt_kobj_get_xprt_switch(struct kobject *kobj) 735b7eb784SOlga Kornievskaia { 745b7eb784SOlga Kornievskaia struct rpc_sysfs_xprt *x = container_of(kobj, 755b7eb784SOlga Kornievskaia struct rpc_sysfs_xprt, kobject); 765b7eb784SOlga Kornievskaia 775b7eb784SOlga Kornievskaia return xprt_switch_get(x->xprt_switch); 785b7eb784SOlga Kornievskaia } 795b7eb784SOlga Kornievskaia 805b7eb784SOlga Kornievskaia static inline struct rpc_xprt_switch * 810e559035SOlga Kornievskaia rpc_sysfs_xprt_switch_kobj_get_xprt(struct kobject *kobj) 820e559035SOlga Kornievskaia { 830e559035SOlga Kornievskaia struct rpc_sysfs_xprt_switch *x = container_of(kobj, 840e559035SOlga Kornievskaia struct rpc_sysfs_xprt_switch, kobject); 850e559035SOlga Kornievskaia 860e559035SOlga Kornievskaia return xprt_switch_get(x->xprt_switch); 870e559035SOlga Kornievskaia } 880e559035SOlga Kornievskaia 89587bc725SOlga Kornievskaia static ssize_t rpc_sysfs_xprt_dstaddr_show(struct kobject *kobj, 90587bc725SOlga Kornievskaia struct kobj_attribute *attr, 91587bc725SOlga Kornievskaia char *buf) 92587bc725SOlga Kornievskaia { 93587bc725SOlga Kornievskaia struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj); 94587bc725SOlga Kornievskaia ssize_t ret; 95587bc725SOlga Kornievskaia 96587bc725SOlga Kornievskaia if (!xprt) 97587bc725SOlga Kornievskaia return 0; 98587bc725SOlga Kornievskaia ret = sprintf(buf, "%s\n", xprt->address_strings[RPC_DISPLAY_ADDR]); 99587bc725SOlga Kornievskaia xprt_put(xprt); 100587bc725SOlga Kornievskaia return ret + 1; 101587bc725SOlga Kornievskaia } 102587bc725SOlga Kornievskaia 1034a09651aSOlga Kornievskaia static ssize_t rpc_sysfs_xprt_info_show(struct kobject *kobj, 1044a09651aSOlga Kornievskaia struct kobj_attribute *attr, 1054a09651aSOlga Kornievskaia char *buf) 1064a09651aSOlga Kornievskaia { 1074a09651aSOlga Kornievskaia struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj); 1084a09651aSOlga Kornievskaia ssize_t ret; 1094a09651aSOlga Kornievskaia 1104a09651aSOlga Kornievskaia if (!xprt) 1114a09651aSOlga Kornievskaia return 0; 1124a09651aSOlga Kornievskaia 1134a09651aSOlga Kornievskaia ret = sprintf(buf, "last_used=%lu\ncur_cong=%lu\ncong_win=%lu\n" 1144a09651aSOlga Kornievskaia "max_num_slots=%u\nmin_num_slots=%u\nnum_reqs=%u\n" 1154a09651aSOlga Kornievskaia "binding_q_len=%u\nsending_q_len=%u\npending_q_len=%u\n" 116c1830a63SOlga Kornievskaia "backlog_q_len=%u\nmain_xprt=%d\nsrc_port=%u\n", 117c1830a63SOlga Kornievskaia xprt->last_used, xprt->cong, xprt->cwnd, xprt->max_reqs, 118c1830a63SOlga Kornievskaia xprt->min_reqs, xprt->num_reqs, xprt->binding.qlen, 119c1830a63SOlga Kornievskaia xprt->sending.qlen, xprt->pending.qlen, 120c1830a63SOlga Kornievskaia xprt->backlog.qlen, xprt->main, 121c1830a63SOlga Kornievskaia (xprt->xprt_class->ident == XPRT_TRANSPORT_TCP) ? 122c1830a63SOlga Kornievskaia get_srcport(xprt) : 0); 1234a09651aSOlga Kornievskaia xprt_put(xprt); 1244a09651aSOlga Kornievskaia return ret + 1; 1254a09651aSOlga Kornievskaia } 1264a09651aSOlga Kornievskaia 127*681d5699SOlga Kornievskaia static ssize_t rpc_sysfs_xprt_state_show(struct kobject *kobj, 128*681d5699SOlga Kornievskaia struct kobj_attribute *attr, 129*681d5699SOlga Kornievskaia char *buf) 130*681d5699SOlga Kornievskaia { 131*681d5699SOlga Kornievskaia struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj); 132*681d5699SOlga Kornievskaia ssize_t ret; 133*681d5699SOlga Kornievskaia int locked, connected, connecting, close_wait, bound, binding, 1345b7eb784SOlga Kornievskaia closing, congested, cwnd_wait, write_space, offline; 135*681d5699SOlga Kornievskaia 136*681d5699SOlga Kornievskaia if (!xprt) 137*681d5699SOlga Kornievskaia return 0; 138*681d5699SOlga Kornievskaia 139*681d5699SOlga Kornievskaia if (!xprt->state) { 140*681d5699SOlga Kornievskaia ret = sprintf(buf, "state=CLOSED\n"); 141*681d5699SOlga Kornievskaia } else { 142*681d5699SOlga Kornievskaia locked = test_bit(XPRT_LOCKED, &xprt->state); 143*681d5699SOlga Kornievskaia connected = test_bit(XPRT_CONNECTED, &xprt->state); 144*681d5699SOlga Kornievskaia connecting = test_bit(XPRT_CONNECTING, &xprt->state); 145*681d5699SOlga Kornievskaia close_wait = test_bit(XPRT_CLOSE_WAIT, &xprt->state); 146*681d5699SOlga Kornievskaia bound = test_bit(XPRT_BOUND, &xprt->state); 147*681d5699SOlga Kornievskaia binding = test_bit(XPRT_BINDING, &xprt->state); 148*681d5699SOlga Kornievskaia closing = test_bit(XPRT_CLOSING, &xprt->state); 149*681d5699SOlga Kornievskaia congested = test_bit(XPRT_CONGESTED, &xprt->state); 150*681d5699SOlga Kornievskaia cwnd_wait = test_bit(XPRT_CWND_WAIT, &xprt->state); 151*681d5699SOlga Kornievskaia write_space = test_bit(XPRT_WRITE_SPACE, &xprt->state); 1525b7eb784SOlga Kornievskaia offline = test_bit(XPRT_OFFLINE, &xprt->state); 153*681d5699SOlga Kornievskaia 1545b7eb784SOlga Kornievskaia ret = sprintf(buf, "state=%s %s %s %s %s %s %s %s %s %s %s\n", 155*681d5699SOlga Kornievskaia locked ? "LOCKED" : "", 156*681d5699SOlga Kornievskaia connected ? "CONNECTED" : "", 157*681d5699SOlga Kornievskaia connecting ? "CONNECTING" : "", 158*681d5699SOlga Kornievskaia close_wait ? "CLOSE_WAIT" : "", 159*681d5699SOlga Kornievskaia bound ? "BOUND" : "", 160*681d5699SOlga Kornievskaia binding ? "BOUNDING" : "", 161*681d5699SOlga Kornievskaia closing ? "CLOSING" : "", 162*681d5699SOlga Kornievskaia congested ? "CONGESTED" : "", 163*681d5699SOlga Kornievskaia cwnd_wait ? "CWND_WAIT" : "", 1645b7eb784SOlga Kornievskaia write_space ? "WRITE_SPACE" : "", 1655b7eb784SOlga Kornievskaia offline ? "OFFLINE" : ""); 166*681d5699SOlga Kornievskaia } 167*681d5699SOlga Kornievskaia 168*681d5699SOlga Kornievskaia xprt_put(xprt); 169*681d5699SOlga Kornievskaia return ret + 1; 170*681d5699SOlga Kornievskaia } 171*681d5699SOlga Kornievskaia 1720e559035SOlga Kornievskaia static ssize_t rpc_sysfs_xprt_switch_info_show(struct kobject *kobj, 1730e559035SOlga Kornievskaia struct kobj_attribute *attr, 1740e559035SOlga Kornievskaia char *buf) 1750e559035SOlga Kornievskaia { 1760e559035SOlga Kornievskaia struct rpc_xprt_switch *xprt_switch = 1770e559035SOlga Kornievskaia rpc_sysfs_xprt_switch_kobj_get_xprt(kobj); 1780e559035SOlga Kornievskaia ssize_t ret; 1790e559035SOlga Kornievskaia 1800e559035SOlga Kornievskaia if (!xprt_switch) 1810e559035SOlga Kornievskaia return 0; 1820e559035SOlga Kornievskaia ret = sprintf(buf, "num_xprts=%u\nnum_active=%u\nqueue_len=%ld\n", 1830e559035SOlga Kornievskaia xprt_switch->xps_nxprts, xprt_switch->xps_nactive, 1840e559035SOlga Kornievskaia atomic_long_read(&xprt_switch->xps_queuelen)); 1850e559035SOlga Kornievskaia xprt_switch_put(xprt_switch); 1860e559035SOlga Kornievskaia return ret + 1; 1870e559035SOlga Kornievskaia } 1880e559035SOlga Kornievskaia 189587bc725SOlga Kornievskaia static ssize_t rpc_sysfs_xprt_dstaddr_store(struct kobject *kobj, 190587bc725SOlga Kornievskaia struct kobj_attribute *attr, 191587bc725SOlga Kornievskaia const char *buf, size_t count) 192587bc725SOlga Kornievskaia { 193587bc725SOlga Kornievskaia struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj); 194587bc725SOlga Kornievskaia struct sockaddr *saddr; 195587bc725SOlga Kornievskaia char *dst_addr; 196587bc725SOlga Kornievskaia int port; 197587bc725SOlga Kornievskaia struct xprt_addr *saved_addr; 198587bc725SOlga Kornievskaia size_t buf_len; 199587bc725SOlga Kornievskaia 200587bc725SOlga Kornievskaia if (!xprt) 201587bc725SOlga Kornievskaia return 0; 202587bc725SOlga Kornievskaia if (!(xprt->xprt_class->ident == XPRT_TRANSPORT_TCP || 203587bc725SOlga Kornievskaia xprt->xprt_class->ident == XPRT_TRANSPORT_RDMA)) { 204587bc725SOlga Kornievskaia xprt_put(xprt); 205587bc725SOlga Kornievskaia return -EOPNOTSUPP; 206587bc725SOlga Kornievskaia } 207587bc725SOlga Kornievskaia 208587bc725SOlga Kornievskaia if (wait_on_bit_lock(&xprt->state, XPRT_LOCKED, TASK_KILLABLE)) { 209587bc725SOlga Kornievskaia count = -EINTR; 210587bc725SOlga Kornievskaia goto out_put; 211587bc725SOlga Kornievskaia } 212587bc725SOlga Kornievskaia saddr = (struct sockaddr *)&xprt->addr; 213587bc725SOlga Kornievskaia port = rpc_get_port(saddr); 214587bc725SOlga Kornievskaia 215587bc725SOlga Kornievskaia /* buf_len is the len until the first occurence of either 216587bc725SOlga Kornievskaia * '\n' or '\0' 217587bc725SOlga Kornievskaia */ 218587bc725SOlga Kornievskaia buf_len = strcspn(buf, "\n"); 219587bc725SOlga Kornievskaia 220587bc725SOlga Kornievskaia dst_addr = kstrndup(buf, buf_len, GFP_KERNEL); 221587bc725SOlga Kornievskaia if (!dst_addr) 222587bc725SOlga Kornievskaia goto out_err; 223587bc725SOlga Kornievskaia saved_addr = kzalloc(sizeof(*saved_addr), GFP_KERNEL); 224587bc725SOlga Kornievskaia if (!saved_addr) 225587bc725SOlga Kornievskaia goto out_err_free; 226587bc725SOlga Kornievskaia saved_addr->addr = 227587bc725SOlga Kornievskaia rcu_dereference_raw(xprt->address_strings[RPC_DISPLAY_ADDR]); 228587bc725SOlga Kornievskaia rcu_assign_pointer(xprt->address_strings[RPC_DISPLAY_ADDR], dst_addr); 229587bc725SOlga Kornievskaia call_rcu(&saved_addr->rcu, free_xprt_addr); 230587bc725SOlga Kornievskaia xprt->addrlen = rpc_pton(xprt->xprt_net, buf, buf_len, saddr, 231587bc725SOlga Kornievskaia sizeof(*saddr)); 232587bc725SOlga Kornievskaia rpc_set_port(saddr, port); 233587bc725SOlga Kornievskaia 234587bc725SOlga Kornievskaia xprt_force_disconnect(xprt); 235587bc725SOlga Kornievskaia out: 236587bc725SOlga Kornievskaia xprt_release_write(xprt, NULL); 237587bc725SOlga Kornievskaia out_put: 238587bc725SOlga Kornievskaia xprt_put(xprt); 239587bc725SOlga Kornievskaia return count; 240587bc725SOlga Kornievskaia out_err_free: 241587bc725SOlga Kornievskaia kfree(dst_addr); 242587bc725SOlga Kornievskaia out_err: 243587bc725SOlga Kornievskaia count = -ENOMEM; 244587bc725SOlga Kornievskaia goto out; 245587bc725SOlga Kornievskaia } 246587bc725SOlga Kornievskaia 2475b7eb784SOlga Kornievskaia static ssize_t rpc_sysfs_xprt_state_change(struct kobject *kobj, 2485b7eb784SOlga Kornievskaia struct kobj_attribute *attr, 2495b7eb784SOlga Kornievskaia const char *buf, size_t count) 2505b7eb784SOlga Kornievskaia { 2515b7eb784SOlga Kornievskaia struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj); 2525b7eb784SOlga Kornievskaia int offline = 0, online = 0; 2535b7eb784SOlga Kornievskaia struct rpc_xprt_switch *xps = rpc_sysfs_xprt_kobj_get_xprt_switch(kobj); 2545b7eb784SOlga Kornievskaia 2555b7eb784SOlga Kornievskaia if (!xprt) 2565b7eb784SOlga Kornievskaia return 0; 2575b7eb784SOlga Kornievskaia 2585b7eb784SOlga Kornievskaia if (!strncmp(buf, "offline", 7)) 2595b7eb784SOlga Kornievskaia offline = 1; 2605b7eb784SOlga Kornievskaia else if (!strncmp(buf, "online", 6)) 2615b7eb784SOlga Kornievskaia online = 1; 2625b7eb784SOlga Kornievskaia else 2635b7eb784SOlga Kornievskaia return -EINVAL; 2645b7eb784SOlga Kornievskaia 2655b7eb784SOlga Kornievskaia if (wait_on_bit_lock(&xprt->state, XPRT_LOCKED, TASK_KILLABLE)) { 2665b7eb784SOlga Kornievskaia count = -EINTR; 2675b7eb784SOlga Kornievskaia goto out_put; 2685b7eb784SOlga Kornievskaia } 2695b7eb784SOlga Kornievskaia if (xprt->main) { 2705b7eb784SOlga Kornievskaia count = -EINVAL; 2715b7eb784SOlga Kornievskaia goto release_tasks; 2725b7eb784SOlga Kornievskaia } 2735b7eb784SOlga Kornievskaia if (offline) { 2745b7eb784SOlga Kornievskaia set_bit(XPRT_OFFLINE, &xprt->state); 2755b7eb784SOlga Kornievskaia spin_lock(&xps->xps_lock); 2765b7eb784SOlga Kornievskaia xps->xps_nactive--; 2775b7eb784SOlga Kornievskaia spin_unlock(&xps->xps_lock); 2785b7eb784SOlga Kornievskaia } else if (online) { 2795b7eb784SOlga Kornievskaia clear_bit(XPRT_OFFLINE, &xprt->state); 2805b7eb784SOlga Kornievskaia spin_lock(&xps->xps_lock); 2815b7eb784SOlga Kornievskaia xps->xps_nactive++; 2825b7eb784SOlga Kornievskaia spin_unlock(&xps->xps_lock); 2835b7eb784SOlga Kornievskaia } 2845b7eb784SOlga Kornievskaia 2855b7eb784SOlga Kornievskaia release_tasks: 2865b7eb784SOlga Kornievskaia xprt_release_write(xprt, NULL); 2875b7eb784SOlga Kornievskaia out_put: 2885b7eb784SOlga Kornievskaia xprt_put(xprt); 2895b7eb784SOlga Kornievskaia xprt_switch_put(xps); 2905b7eb784SOlga Kornievskaia return count; 2915b7eb784SOlga Kornievskaia } 2925b7eb784SOlga Kornievskaia 29374678748SOlga Kornievskaia int rpc_sysfs_init(void) 29474678748SOlga Kornievskaia { 29574678748SOlga Kornievskaia rpc_sunrpc_kset = kset_create_and_add("sunrpc", NULL, kernel_kobj); 29674678748SOlga Kornievskaia if (!rpc_sunrpc_kset) 29774678748SOlga Kornievskaia return -ENOMEM; 298baea9944SOlga Kornievskaia rpc_sunrpc_client_kobj = 299baea9944SOlga Kornievskaia rpc_sysfs_object_alloc("rpc-clients", rpc_sunrpc_kset, NULL); 300baea9944SOlga Kornievskaia if (!rpc_sunrpc_client_kobj) 301baea9944SOlga Kornievskaia goto err_client; 302baea9944SOlga Kornievskaia rpc_sunrpc_xprt_switch_kobj = 303baea9944SOlga Kornievskaia rpc_sysfs_object_alloc("xprt-switches", rpc_sunrpc_kset, NULL); 304baea9944SOlga Kornievskaia if (!rpc_sunrpc_xprt_switch_kobj) 305baea9944SOlga Kornievskaia goto err_switch; 30674678748SOlga Kornievskaia return 0; 307baea9944SOlga Kornievskaia err_switch: 308baea9944SOlga Kornievskaia kobject_put(rpc_sunrpc_client_kobj); 309baea9944SOlga Kornievskaia rpc_sunrpc_client_kobj = NULL; 310baea9944SOlga Kornievskaia err_client: 311baea9944SOlga Kornievskaia kset_unregister(rpc_sunrpc_kset); 312baea9944SOlga Kornievskaia rpc_sunrpc_kset = NULL; 313baea9944SOlga Kornievskaia return -ENOMEM; 31474678748SOlga Kornievskaia } 31574678748SOlga Kornievskaia 316c5a382ebSOlga Kornievskaia static void rpc_sysfs_client_release(struct kobject *kobj) 317c5a382ebSOlga Kornievskaia { 318c5a382ebSOlga Kornievskaia struct rpc_sysfs_client *c; 319c5a382ebSOlga Kornievskaia 320c5a382ebSOlga Kornievskaia c = container_of(kobj, struct rpc_sysfs_client, kobject); 321c5a382ebSOlga Kornievskaia kfree(c); 322c5a382ebSOlga Kornievskaia } 323c5a382ebSOlga Kornievskaia 324baea9944SOlga Kornievskaia static void rpc_sysfs_xprt_switch_release(struct kobject *kobj) 325baea9944SOlga Kornievskaia { 326baea9944SOlga Kornievskaia struct rpc_sysfs_xprt_switch *xprt_switch; 327baea9944SOlga Kornievskaia 328baea9944SOlga Kornievskaia xprt_switch = container_of(kobj, struct rpc_sysfs_xprt_switch, kobject); 329baea9944SOlga Kornievskaia kfree(xprt_switch); 330baea9944SOlga Kornievskaia } 331baea9944SOlga Kornievskaia 332d408ebe0SOlga Kornievskaia static void rpc_sysfs_xprt_release(struct kobject *kobj) 333d408ebe0SOlga Kornievskaia { 334d408ebe0SOlga Kornievskaia struct rpc_sysfs_xprt *xprt; 335d408ebe0SOlga Kornievskaia 336d408ebe0SOlga Kornievskaia xprt = container_of(kobj, struct rpc_sysfs_xprt, kobject); 337d408ebe0SOlga Kornievskaia kfree(xprt); 338d408ebe0SOlga Kornievskaia } 339d408ebe0SOlga Kornievskaia 340c5a382ebSOlga Kornievskaia static const void *rpc_sysfs_client_namespace(struct kobject *kobj) 341c5a382ebSOlga Kornievskaia { 342c5a382ebSOlga Kornievskaia return container_of(kobj, struct rpc_sysfs_client, kobject)->net; 343c5a382ebSOlga Kornievskaia } 344c5a382ebSOlga Kornievskaia 345baea9944SOlga Kornievskaia static const void *rpc_sysfs_xprt_switch_namespace(struct kobject *kobj) 346baea9944SOlga Kornievskaia { 347baea9944SOlga Kornievskaia return container_of(kobj, struct rpc_sysfs_xprt_switch, kobject)->net; 348baea9944SOlga Kornievskaia } 349baea9944SOlga Kornievskaia 350d408ebe0SOlga Kornievskaia static const void *rpc_sysfs_xprt_namespace(struct kobject *kobj) 351d408ebe0SOlga Kornievskaia { 352d408ebe0SOlga Kornievskaia return container_of(kobj, struct rpc_sysfs_xprt, 353d408ebe0SOlga Kornievskaia kobject)->xprt->xprt_net; 354d408ebe0SOlga Kornievskaia } 355d408ebe0SOlga Kornievskaia 356587bc725SOlga Kornievskaia static struct kobj_attribute rpc_sysfs_xprt_dstaddr = __ATTR(dstaddr, 357587bc725SOlga Kornievskaia 0644, rpc_sysfs_xprt_dstaddr_show, rpc_sysfs_xprt_dstaddr_store); 358587bc725SOlga Kornievskaia 3594a09651aSOlga Kornievskaia static struct kobj_attribute rpc_sysfs_xprt_info = __ATTR(xprt_info, 3604a09651aSOlga Kornievskaia 0444, rpc_sysfs_xprt_info_show, NULL); 3614a09651aSOlga Kornievskaia 362*681d5699SOlga Kornievskaia static struct kobj_attribute rpc_sysfs_xprt_change_state = __ATTR(xprt_state, 3635b7eb784SOlga Kornievskaia 0644, rpc_sysfs_xprt_state_show, rpc_sysfs_xprt_state_change); 364*681d5699SOlga Kornievskaia 365587bc725SOlga Kornievskaia static struct attribute *rpc_sysfs_xprt_attrs[] = { 366587bc725SOlga Kornievskaia &rpc_sysfs_xprt_dstaddr.attr, 3674a09651aSOlga Kornievskaia &rpc_sysfs_xprt_info.attr, 368*681d5699SOlga Kornievskaia &rpc_sysfs_xprt_change_state.attr, 369587bc725SOlga Kornievskaia NULL, 370587bc725SOlga Kornievskaia }; 371587bc725SOlga Kornievskaia 3720e559035SOlga Kornievskaia static struct kobj_attribute rpc_sysfs_xprt_switch_info = 3730e559035SOlga Kornievskaia __ATTR(xprt_switch_info, 0444, rpc_sysfs_xprt_switch_info_show, NULL); 3740e559035SOlga Kornievskaia 3750e559035SOlga Kornievskaia static struct attribute *rpc_sysfs_xprt_switch_attrs[] = { 3760e559035SOlga Kornievskaia &rpc_sysfs_xprt_switch_info.attr, 3770e559035SOlga Kornievskaia NULL, 3780e559035SOlga Kornievskaia }; 3790e559035SOlga Kornievskaia 380c5a382ebSOlga Kornievskaia static struct kobj_type rpc_sysfs_client_type = { 381c5a382ebSOlga Kornievskaia .release = rpc_sysfs_client_release, 382c5a382ebSOlga Kornievskaia .sysfs_ops = &kobj_sysfs_ops, 383c5a382ebSOlga Kornievskaia .namespace = rpc_sysfs_client_namespace, 384c5a382ebSOlga Kornievskaia }; 385c5a382ebSOlga Kornievskaia 386baea9944SOlga Kornievskaia static struct kobj_type rpc_sysfs_xprt_switch_type = { 387baea9944SOlga Kornievskaia .release = rpc_sysfs_xprt_switch_release, 3880e559035SOlga Kornievskaia .default_attrs = rpc_sysfs_xprt_switch_attrs, 389baea9944SOlga Kornievskaia .sysfs_ops = &kobj_sysfs_ops, 390baea9944SOlga Kornievskaia .namespace = rpc_sysfs_xprt_switch_namespace, 391baea9944SOlga Kornievskaia }; 392baea9944SOlga Kornievskaia 393d408ebe0SOlga Kornievskaia static struct kobj_type rpc_sysfs_xprt_type = { 394d408ebe0SOlga Kornievskaia .release = rpc_sysfs_xprt_release, 395587bc725SOlga Kornievskaia .default_attrs = rpc_sysfs_xprt_attrs, 396d408ebe0SOlga Kornievskaia .sysfs_ops = &kobj_sysfs_ops, 397d408ebe0SOlga Kornievskaia .namespace = rpc_sysfs_xprt_namespace, 398d408ebe0SOlga Kornievskaia }; 399d408ebe0SOlga Kornievskaia 40074678748SOlga Kornievskaia void rpc_sysfs_exit(void) 40174678748SOlga Kornievskaia { 402c441f125SOlga Kornievskaia kobject_put(rpc_sunrpc_client_kobj); 403baea9944SOlga Kornievskaia kobject_put(rpc_sunrpc_xprt_switch_kobj); 40474678748SOlga Kornievskaia kset_unregister(rpc_sunrpc_kset); 40574678748SOlga Kornievskaia } 406c5a382ebSOlga Kornievskaia 407c5a382ebSOlga Kornievskaia static struct rpc_sysfs_client *rpc_sysfs_client_alloc(struct kobject *parent, 408c5a382ebSOlga Kornievskaia struct net *net, 409c5a382ebSOlga Kornievskaia int clid) 410c5a382ebSOlga Kornievskaia { 411c5a382ebSOlga Kornievskaia struct rpc_sysfs_client *p; 412c5a382ebSOlga Kornievskaia 413c5a382ebSOlga Kornievskaia p = kzalloc(sizeof(*p), GFP_KERNEL); 414c5a382ebSOlga Kornievskaia if (p) { 415c5a382ebSOlga Kornievskaia p->net = net; 416c5a382ebSOlga Kornievskaia p->kobject.kset = rpc_sunrpc_kset; 417c5a382ebSOlga Kornievskaia if (kobject_init_and_add(&p->kobject, &rpc_sysfs_client_type, 418c5a382ebSOlga Kornievskaia parent, "clnt-%d", clid) == 0) 419c5a382ebSOlga Kornievskaia return p; 420c5a382ebSOlga Kornievskaia kobject_put(&p->kobject); 421c5a382ebSOlga Kornievskaia } 422c5a382ebSOlga Kornievskaia return NULL; 423c5a382ebSOlga Kornievskaia } 424c5a382ebSOlga Kornievskaia 425baea9944SOlga Kornievskaia static struct rpc_sysfs_xprt_switch * 426baea9944SOlga Kornievskaia rpc_sysfs_xprt_switch_alloc(struct kobject *parent, 427baea9944SOlga Kornievskaia struct rpc_xprt_switch *xprt_switch, 428baea9944SOlga Kornievskaia struct net *net, 429baea9944SOlga Kornievskaia gfp_t gfp_flags) 430baea9944SOlga Kornievskaia { 431baea9944SOlga Kornievskaia struct rpc_sysfs_xprt_switch *p; 432baea9944SOlga Kornievskaia 433baea9944SOlga Kornievskaia p = kzalloc(sizeof(*p), gfp_flags); 434baea9944SOlga Kornievskaia if (p) { 435baea9944SOlga Kornievskaia p->net = net; 436baea9944SOlga Kornievskaia p->kobject.kset = rpc_sunrpc_kset; 437baea9944SOlga Kornievskaia if (kobject_init_and_add(&p->kobject, 438baea9944SOlga Kornievskaia &rpc_sysfs_xprt_switch_type, 439baea9944SOlga Kornievskaia parent, "switch-%d", 440baea9944SOlga Kornievskaia xprt_switch->xps_id) == 0) 441baea9944SOlga Kornievskaia return p; 442baea9944SOlga Kornievskaia kobject_put(&p->kobject); 443baea9944SOlga Kornievskaia } 444baea9944SOlga Kornievskaia return NULL; 445baea9944SOlga Kornievskaia } 446baea9944SOlga Kornievskaia 447d408ebe0SOlga Kornievskaia static struct rpc_sysfs_xprt *rpc_sysfs_xprt_alloc(struct kobject *parent, 448d408ebe0SOlga Kornievskaia struct rpc_xprt *xprt, 449d408ebe0SOlga Kornievskaia gfp_t gfp_flags) 450d408ebe0SOlga Kornievskaia { 451d408ebe0SOlga Kornievskaia struct rpc_sysfs_xprt *p; 452d408ebe0SOlga Kornievskaia 453d408ebe0SOlga Kornievskaia p = kzalloc(sizeof(*p), gfp_flags); 454d408ebe0SOlga Kornievskaia if (!p) 455d408ebe0SOlga Kornievskaia goto out; 456d408ebe0SOlga Kornievskaia p->kobject.kset = rpc_sunrpc_kset; 457d408ebe0SOlga Kornievskaia if (kobject_init_and_add(&p->kobject, &rpc_sysfs_xprt_type, 458d408ebe0SOlga Kornievskaia parent, "xprt-%d-%s", xprt->id, 459d408ebe0SOlga Kornievskaia xprt->address_strings[RPC_DISPLAY_PROTO]) == 0) 460d408ebe0SOlga Kornievskaia return p; 461d408ebe0SOlga Kornievskaia kobject_put(&p->kobject); 462d408ebe0SOlga Kornievskaia out: 463d408ebe0SOlga Kornievskaia return NULL; 464d408ebe0SOlga Kornievskaia } 465d408ebe0SOlga Kornievskaia 4662a338a54SOlga Kornievskaia void rpc_sysfs_client_setup(struct rpc_clnt *clnt, 4672a338a54SOlga Kornievskaia struct rpc_xprt_switch *xprt_switch, 4682a338a54SOlga Kornievskaia struct net *net) 469c5a382ebSOlga Kornievskaia { 470c5a382ebSOlga Kornievskaia struct rpc_sysfs_client *rpc_client; 471c5a382ebSOlga Kornievskaia 4722a338a54SOlga Kornievskaia rpc_client = rpc_sysfs_client_alloc(rpc_sunrpc_client_kobj, 4732a338a54SOlga Kornievskaia net, clnt->cl_clid); 474c5a382ebSOlga Kornievskaia if (rpc_client) { 4752a338a54SOlga Kornievskaia char name[] = "switch"; 4762a338a54SOlga Kornievskaia struct rpc_sysfs_xprt_switch *xswitch = 4772a338a54SOlga Kornievskaia (struct rpc_sysfs_xprt_switch *)xprt_switch->xps_sysfs; 4782a338a54SOlga Kornievskaia int ret; 4792a338a54SOlga Kornievskaia 480c5a382ebSOlga Kornievskaia clnt->cl_sysfs = rpc_client; 4812a338a54SOlga Kornievskaia rpc_client->clnt = clnt; 4822a338a54SOlga Kornievskaia rpc_client->xprt_switch = xprt_switch; 483c5a382ebSOlga Kornievskaia kobject_uevent(&rpc_client->kobject, KOBJ_ADD); 4842a338a54SOlga Kornievskaia ret = sysfs_create_link_nowarn(&rpc_client->kobject, 4852a338a54SOlga Kornievskaia &xswitch->kobject, name); 4862a338a54SOlga Kornievskaia if (ret) 4872a338a54SOlga Kornievskaia pr_warn("can't create link to %s in sysfs (%d)\n", 4882a338a54SOlga Kornievskaia name, ret); 489c5a382ebSOlga Kornievskaia } 490c5a382ebSOlga Kornievskaia } 491c5a382ebSOlga Kornievskaia 492baea9944SOlga Kornievskaia void rpc_sysfs_xprt_switch_setup(struct rpc_xprt_switch *xprt_switch, 493baea9944SOlga Kornievskaia struct rpc_xprt *xprt, 494baea9944SOlga Kornievskaia gfp_t gfp_flags) 495baea9944SOlga Kornievskaia { 496baea9944SOlga Kornievskaia struct rpc_sysfs_xprt_switch *rpc_xprt_switch; 497baea9944SOlga Kornievskaia struct net *net; 498baea9944SOlga Kornievskaia 499baea9944SOlga Kornievskaia if (xprt_switch->xps_net) 500baea9944SOlga Kornievskaia net = xprt_switch->xps_net; 501baea9944SOlga Kornievskaia else 502baea9944SOlga Kornievskaia net = xprt->xprt_net; 503baea9944SOlga Kornievskaia rpc_xprt_switch = 504baea9944SOlga Kornievskaia rpc_sysfs_xprt_switch_alloc(rpc_sunrpc_xprt_switch_kobj, 505baea9944SOlga Kornievskaia xprt_switch, net, gfp_flags); 506baea9944SOlga Kornievskaia if (rpc_xprt_switch) { 507baea9944SOlga Kornievskaia xprt_switch->xps_sysfs = rpc_xprt_switch; 508baea9944SOlga Kornievskaia rpc_xprt_switch->xprt_switch = xprt_switch; 509baea9944SOlga Kornievskaia rpc_xprt_switch->xprt = xprt; 510baea9944SOlga Kornievskaia kobject_uevent(&rpc_xprt_switch->kobject, KOBJ_ADD); 511baea9944SOlga Kornievskaia } 512baea9944SOlga Kornievskaia } 513baea9944SOlga Kornievskaia 514d408ebe0SOlga Kornievskaia void rpc_sysfs_xprt_setup(struct rpc_xprt_switch *xprt_switch, 515d408ebe0SOlga Kornievskaia struct rpc_xprt *xprt, 516d408ebe0SOlga Kornievskaia gfp_t gfp_flags) 517d408ebe0SOlga Kornievskaia { 518d408ebe0SOlga Kornievskaia struct rpc_sysfs_xprt *rpc_xprt; 519d408ebe0SOlga Kornievskaia struct rpc_sysfs_xprt_switch *switch_obj = 520d408ebe0SOlga Kornievskaia (struct rpc_sysfs_xprt_switch *)xprt_switch->xps_sysfs; 521d408ebe0SOlga Kornievskaia 522d408ebe0SOlga Kornievskaia rpc_xprt = rpc_sysfs_xprt_alloc(&switch_obj->kobject, xprt, gfp_flags); 523d408ebe0SOlga Kornievskaia if (rpc_xprt) { 524d408ebe0SOlga Kornievskaia xprt->xprt_sysfs = rpc_xprt; 525d408ebe0SOlga Kornievskaia rpc_xprt->xprt = xprt; 5265b7eb784SOlga Kornievskaia rpc_xprt->xprt_switch = xprt_switch; 527d408ebe0SOlga Kornievskaia kobject_uevent(&rpc_xprt->kobject, KOBJ_ADD); 528d408ebe0SOlga Kornievskaia } 529d408ebe0SOlga Kornievskaia } 530d408ebe0SOlga Kornievskaia 531c5a382ebSOlga Kornievskaia void rpc_sysfs_client_destroy(struct rpc_clnt *clnt) 532c5a382ebSOlga Kornievskaia { 533c5a382ebSOlga Kornievskaia struct rpc_sysfs_client *rpc_client = clnt->cl_sysfs; 534c5a382ebSOlga Kornievskaia 535c5a382ebSOlga Kornievskaia if (rpc_client) { 5362a338a54SOlga Kornievskaia char name[] = "switch"; 5372a338a54SOlga Kornievskaia 5382a338a54SOlga Kornievskaia sysfs_remove_link(&rpc_client->kobject, name); 539c5a382ebSOlga Kornievskaia kobject_uevent(&rpc_client->kobject, KOBJ_REMOVE); 540c5a382ebSOlga Kornievskaia kobject_del(&rpc_client->kobject); 541c5a382ebSOlga Kornievskaia kobject_put(&rpc_client->kobject); 542c5a382ebSOlga Kornievskaia clnt->cl_sysfs = NULL; 543c5a382ebSOlga Kornievskaia } 544c5a382ebSOlga Kornievskaia } 545baea9944SOlga Kornievskaia 546baea9944SOlga Kornievskaia void rpc_sysfs_xprt_switch_destroy(struct rpc_xprt_switch *xprt_switch) 547baea9944SOlga Kornievskaia { 548baea9944SOlga Kornievskaia struct rpc_sysfs_xprt_switch *rpc_xprt_switch = xprt_switch->xps_sysfs; 549baea9944SOlga Kornievskaia 550baea9944SOlga Kornievskaia if (rpc_xprt_switch) { 551baea9944SOlga Kornievskaia kobject_uevent(&rpc_xprt_switch->kobject, KOBJ_REMOVE); 552baea9944SOlga Kornievskaia kobject_del(&rpc_xprt_switch->kobject); 553baea9944SOlga Kornievskaia kobject_put(&rpc_xprt_switch->kobject); 554baea9944SOlga Kornievskaia xprt_switch->xps_sysfs = NULL; 555baea9944SOlga Kornievskaia } 556baea9944SOlga Kornievskaia } 557d408ebe0SOlga Kornievskaia 558d408ebe0SOlga Kornievskaia void rpc_sysfs_xprt_destroy(struct rpc_xprt *xprt) 559d408ebe0SOlga Kornievskaia { 560d408ebe0SOlga Kornievskaia struct rpc_sysfs_xprt *rpc_xprt = xprt->xprt_sysfs; 561d408ebe0SOlga Kornievskaia 562d408ebe0SOlga Kornievskaia if (rpc_xprt) { 563d408ebe0SOlga Kornievskaia kobject_uevent(&rpc_xprt->kobject, KOBJ_REMOVE); 564d408ebe0SOlga Kornievskaia kobject_del(&rpc_xprt->kobject); 565d408ebe0SOlga Kornievskaia kobject_put(&rpc_xprt->kobject); 566d408ebe0SOlga Kornievskaia xprt->xprt_sysfs = NULL; 567d408ebe0SOlga Kornievskaia } 568d408ebe0SOlga Kornievskaia } 569