diff --git a/net/tipc/core.c b/net/tipc/core.c index be1c9fa60b09..005ba5eb0ea4 100644 --- a/net/tipc/core.c +++ b/net/tipc/core.c @@ -68,7 +68,7 @@ static int __net_init tipc_init_net(struct net *net) if (err) goto out_nametbl; - err = tipc_subscr_start(net); + err = tipc_topsrv_start(net); if (err) goto out_subscr; return 0; @@ -83,7 +83,7 @@ out_sk_rht: static void __net_exit tipc_exit_net(struct net *net) { - tipc_subscr_stop(net); + tipc_topsrv_stop(net); tipc_net_stop(net); tipc_nametbl_stop(net); tipc_sk_rht_destroy(net); diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c index ab0ac62a1287..0f47f08bf38f 100644 --- a/net/tipc/name_table.c +++ b/net/tipc/name_table.c @@ -330,13 +330,9 @@ static struct publication *tipc_nameseq_insert_publ(struct net *net, /* Any subscriptions waiting for notification? */ list_for_each_entry_safe(s, st, &nseq->subscriptions, nameseq_list) { - tipc_subscr_report_overlap(s, - publ->lower, - publ->upper, - TIPC_PUBLISHED, - publ->ref, - publ->node, - created_subseq); + tipc_subscrp_report_overlap(s, publ->lower, publ->upper, + TIPC_PUBLISHED, publ->ref, + publ->node, created_subseq); } return publ; } @@ -404,13 +400,9 @@ found: /* Notify any waiting subscriptions */ list_for_each_entry_safe(s, st, &nseq->subscriptions, nameseq_list) { - tipc_subscr_report_overlap(s, - publ->lower, - publ->upper, - TIPC_WITHDRAWN, - publ->ref, - publ->node, - removed_subseq); + tipc_subscrp_report_overlap(s, publ->lower, publ->upper, + TIPC_WITHDRAWN, publ->ref, + publ->node, removed_subseq); } return publ; @@ -432,19 +424,17 @@ static void tipc_nameseq_subscribe(struct name_seq *nseq, return; while (sseq != &nseq->sseqs[nseq->first_free]) { - if (tipc_subscr_overlap(s, sseq->lower, sseq->upper)) { + if (tipc_subscrp_check_overlap(s, sseq->lower, sseq->upper)) { struct publication *crs; struct name_info *info = sseq->info; int must_report = 1; list_for_each_entry(crs, &info->zone_list, zone_list) { - tipc_subscr_report_overlap(s, - sseq->lower, - sseq->upper, - TIPC_PUBLISHED, - crs->ref, - crs->node, - must_report); + tipc_subscrp_report_overlap(s, sseq->lower, + sseq->upper, + TIPC_PUBLISHED, + crs->ref, crs->node, + must_report); must_report = 0; } } diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c index 1c147c869c2e..caec0b2b0740 100644 --- a/net/tipc/subscr.c +++ b/net/tipc/subscr.c @@ -42,12 +42,12 @@ * struct tipc_subscriber - TIPC network topology subscriber * @conid: connection identifier to server connecting to subscriber * @lock: control access to subscriber - * @subscription_list: list of subscription objects for this subscriber + * @subscrp_list: list of subscription objects for this subscriber */ struct tipc_subscriber { int conid; spinlock_t lock; - struct list_head subscription_list; + struct list_head subscrp_list; }; /** @@ -62,9 +62,9 @@ static u32 htohl(u32 in, int swap) return swap ? swab32(in) : in; } -static void subscr_send_event(struct tipc_subscription *sub, u32 found_lower, - u32 found_upper, u32 event, u32 port_ref, - u32 node) +static void tipc_subscrp_send_event(struct tipc_subscription *sub, + u32 found_lower, u32 found_upper, + u32 event, u32 port_ref, u32 node) { struct tipc_net *tn = net_generic(sub->net, tipc_net_id); struct tipc_subscriber *subscriber = sub->subscriber; @@ -82,12 +82,13 @@ static void subscr_send_event(struct tipc_subscription *sub, u32 found_lower, } /** - * tipc_subscr_overlap - test for subscription overlap with the given values + * tipc_subscrp_check_overlap - test for subscription overlap with the + * given values * * Returns 1 if there is overlap, otherwise 0. */ -int tipc_subscr_overlap(struct tipc_subscription *sub, u32 found_lower, - u32 found_upper) +int tipc_subscrp_check_overlap(struct tipc_subscription *sub, u32 found_lower, + u32 found_upper) { if (found_lower < sub->seq.lower) found_lower = sub->seq.lower; @@ -98,24 +99,20 @@ int tipc_subscr_overlap(struct tipc_subscription *sub, u32 found_lower, return 1; } -/** - * tipc_subscr_report_overlap - issue event if there is subscription overlap - * - * Protected by nameseq.lock in name_table.c - */ -void tipc_subscr_report_overlap(struct tipc_subscription *sub, u32 found_lower, - u32 found_upper, u32 event, u32 port_ref, - u32 node, int must) +void tipc_subscrp_report_overlap(struct tipc_subscription *sub, u32 found_lower, + u32 found_upper, u32 event, u32 port_ref, + u32 node, int must) { - if (!tipc_subscr_overlap(sub, found_lower, found_upper)) + if (!tipc_subscrp_check_overlap(sub, found_lower, found_upper)) return; if (!must && !(sub->filter & TIPC_SUB_PORTS)) return; - subscr_send_event(sub, found_lower, found_upper, event, port_ref, node); + tipc_subscrp_send_event(sub, found_lower, found_upper, event, port_ref, + node); } -static void subscr_timeout(unsigned long data) +static void tipc_subscrp_timeout(unsigned long data) { struct tipc_subscription *sub = (struct tipc_subscription *)data; struct tipc_subscriber *subscriber = sub->subscriber; @@ -134,35 +131,30 @@ static void subscr_timeout(unsigned long data) tipc_nametbl_unsubscribe(sub); /* Unlink subscription from subscriber */ - list_del(&sub->subscription_list); + list_del(&sub->subscrp_list); spin_unlock_bh(&subscriber->lock); /* Notify subscriber of timeout */ - subscr_send_event(sub, sub->evt.s.seq.lower, sub->evt.s.seq.upper, - TIPC_SUBSCR_TIMEOUT, 0, 0); + tipc_subscrp_send_event(sub, sub->evt.s.seq.lower, sub->evt.s.seq.upper, + TIPC_SUBSCR_TIMEOUT, 0, 0); /* Now destroy subscription */ kfree(sub); atomic_dec(&tn->subscription_count); } -/** - * subscr_del - delete a subscription within a subscription list - * - * Called with subscriber lock held. - */ -static void subscr_del(struct tipc_subscription *sub) +static void tipc_subscrp_delete(struct tipc_subscription *sub) { struct tipc_net *tn = net_generic(sub->net, tipc_net_id); tipc_nametbl_unsubscribe(sub); - list_del(&sub->subscription_list); + list_del(&sub->subscrp_list); kfree(sub); atomic_dec(&tn->subscription_count); } -static void subscr_release(struct tipc_subscriber *subscriber) +static void tipc_subscrb_delete(struct tipc_subscriber *subscriber) { struct tipc_subscription *sub; struct tipc_subscription *sub_temp; @@ -170,14 +162,14 @@ static void subscr_release(struct tipc_subscriber *subscriber) spin_lock_bh(&subscriber->lock); /* Destroy any existing subscriptions for subscriber */ - list_for_each_entry_safe(sub, sub_temp, &subscriber->subscription_list, - subscription_list) { + list_for_each_entry_safe(sub, sub_temp, &subscriber->subscrp_list, + subscrp_list) { if (sub->timeout != TIPC_WAIT_FOREVER) { spin_unlock_bh(&subscriber->lock); del_timer_sync(&sub->timer); spin_lock_bh(&subscriber->lock); } - subscr_del(sub); + tipc_subscrp_delete(sub); } spin_unlock_bh(&subscriber->lock); @@ -186,7 +178,7 @@ static void subscr_release(struct tipc_subscriber *subscriber) } /** - * subscr_cancel - handle subscription cancellation request + * tipc_subscrp_cancel - handle subscription cancellation request * * Called with subscriber lock held. Routine must temporarily release lock * to enable the subscription timeout routine to finish without deadlocking; @@ -194,16 +186,16 @@ static void subscr_release(struct tipc_subscriber *subscriber) * * Note that fields of 's' use subscriber's endianness! */ -static void subscr_cancel(struct tipc_subscr *s, - struct tipc_subscriber *subscriber) +static void tipc_subscrp_cancel(struct tipc_subscr *s, + struct tipc_subscriber *subscriber) { struct tipc_subscription *sub; struct tipc_subscription *sub_temp; int found = 0; /* Find first matching subscription, exit if not found */ - list_for_each_entry_safe(sub, sub_temp, &subscriber->subscription_list, - subscription_list) { + list_for_each_entry_safe(sub, sub_temp, &subscriber->subscrp_list, + subscrp_list) { if (!memcmp(s, &sub->evt.s, sizeof(struct tipc_subscr))) { found = 1; break; @@ -219,17 +211,12 @@ static void subscr_cancel(struct tipc_subscr *s, del_timer_sync(&sub->timer); spin_lock_bh(&subscriber->lock); } - subscr_del(sub); + tipc_subscrp_delete(sub); } -/** - * subscr_subscribe - create subscription for subscriber - * - * Called with subscriber lock held. - */ -static int subscr_subscribe(struct net *net, struct tipc_subscr *s, - struct tipc_subscriber *subscriber, - struct tipc_subscription **sub_p) +static int tipc_subscrp_create(struct net *net, struct tipc_subscr *s, + struct tipc_subscriber *subscriber, + struct tipc_subscription **sub_p) { struct tipc_net *tn = net_generic(net, tipc_net_id); struct tipc_subscription *sub; @@ -241,7 +228,7 @@ static int subscr_subscribe(struct net *net, struct tipc_subscr *s, /* Detect & process a subscription cancellation request */ if (s->filter & htohl(TIPC_SUB_CANCEL, swap)) { s->filter &= ~htohl(TIPC_SUB_CANCEL, swap); - subscr_cancel(s, subscriber); + tipc_subscrp_cancel(s, subscriber); return 0; } @@ -273,13 +260,14 @@ static int subscr_subscribe(struct net *net, struct tipc_subscr *s, kfree(sub); return -EINVAL; } - list_add(&sub->subscription_list, &subscriber->subscription_list); + list_add(&sub->subscrp_list, &subscriber->subscrp_list); sub->subscriber = subscriber; sub->swap = swap; - memcpy(&sub->evt.s, s, sizeof(struct tipc_subscr)); + memcpy(&sub->evt.s, s, sizeof(*s)); atomic_inc(&tn->subscription_count); if (sub->timeout != TIPC_WAIT_FOREVER) { - setup_timer(&sub->timer, subscr_timeout, (unsigned long)sub); + setup_timer(&sub->timer, tipc_subscrp_timeout, + (unsigned long)sub); mod_timer(&sub->timer, jiffies + sub->timeout); } *sub_p = sub; @@ -287,22 +275,22 @@ static int subscr_subscribe(struct net *net, struct tipc_subscr *s, } /* Handle one termination request for the subscriber */ -static void subscr_conn_shutdown_event(int conid, void *usr_data) +static void tipc_subscrb_shutdown_cb(int conid, void *usr_data) { - subscr_release((struct tipc_subscriber *)usr_data); + tipc_subscrb_delete((struct tipc_subscriber *)usr_data); } /* Handle one request to create a new subscription for the subscriber */ -static void subscr_conn_msg_event(struct net *net, int conid, - struct sockaddr_tipc *addr, void *usr_data, - void *buf, size_t len) +static void tipc_subscrb_rcv_cb(struct net *net, int conid, + struct sockaddr_tipc *addr, void *usr_data, + void *buf, size_t len) { struct tipc_subscriber *subscriber = usr_data; struct tipc_subscription *sub = NULL; struct tipc_net *tn = net_generic(net, tipc_net_id); spin_lock_bh(&subscriber->lock); - subscr_subscribe(net, (struct tipc_subscr *)buf, subscriber, &sub); + tipc_subscrp_create(net, (struct tipc_subscr *)buf, subscriber, &sub); if (sub) tipc_nametbl_subscribe(sub); else @@ -311,7 +299,7 @@ static void subscr_conn_msg_event(struct net *net, int conid, } /* Handle one request to establish a new subscriber */ -static void *subscr_named_msg_event(int conid) +static void *tipc_subscrb_connect_cb(int conid) { struct tipc_subscriber *subscriber; @@ -321,14 +309,14 @@ static void *subscr_named_msg_event(int conid) pr_warn("Subscriber rejected, no memory\n"); return NULL; } - INIT_LIST_HEAD(&subscriber->subscription_list); + INIT_LIST_HEAD(&subscriber->subscrp_list); subscriber->conid = conid; spin_lock_init(&subscriber->lock); return (void *)subscriber; } -int tipc_subscr_start(struct net *net) +int tipc_topsrv_start(struct net *net) { struct tipc_net *tn = net_generic(net, tipc_net_id); const char name[] = "topology_server"; @@ -355,9 +343,9 @@ int tipc_subscr_start(struct net *net) topsrv->imp = TIPC_CRITICAL_IMPORTANCE; topsrv->type = SOCK_SEQPACKET; topsrv->max_rcvbuf_size = sizeof(struct tipc_subscr); - topsrv->tipc_conn_recvmsg = subscr_conn_msg_event; - topsrv->tipc_conn_new = subscr_named_msg_event; - topsrv->tipc_conn_shutdown = subscr_conn_shutdown_event; + topsrv->tipc_conn_recvmsg = tipc_subscrb_rcv_cb; + topsrv->tipc_conn_new = tipc_subscrb_connect_cb; + topsrv->tipc_conn_shutdown = tipc_subscrb_shutdown_cb; strncpy(topsrv->name, name, strlen(name) + 1); tn->topsrv = topsrv; @@ -366,7 +354,7 @@ int tipc_subscr_start(struct net *net) return tipc_server_start(topsrv); } -void tipc_subscr_stop(struct net *net) +void tipc_topsrv_stop(struct net *net) { struct tipc_net *tn = net_generic(net, tipc_net_id); struct tipc_server *topsrv = tn->topsrv; diff --git a/net/tipc/subscr.h b/net/tipc/subscr.h index 33488bd9fe3c..92ee18cc5fe6 100644 --- a/net/tipc/subscr.h +++ b/net/tipc/subscr.h @@ -54,7 +54,7 @@ struct tipc_subscriber; * @filter: event filtering to be done for subscription * @timer: timer governing subscription duration (optional) * @nameseq_list: adjacent subscriptions in name sequence's subscription list - * @subscription_list: adjacent subscriptions in subscriber's subscription list + * @subscrp_list: adjacent subscriptions in subscriber's subscription list * @server_ref: object reference of server port associated with subscription * @swap: indicates if subscriber uses opposite endianness in its messages * @evt: template for events generated by subscription @@ -67,17 +67,17 @@ struct tipc_subscription { u32 filter; struct timer_list timer; struct list_head nameseq_list; - struct list_head subscription_list; + struct list_head subscrp_list; int swap; struct tipc_event evt; }; -int tipc_subscr_overlap(struct tipc_subscription *sub, u32 found_lower, - u32 found_upper); -void tipc_subscr_report_overlap(struct tipc_subscription *sub, u32 found_lower, - u32 found_upper, u32 event, u32 port_ref, - u32 node, int must); -int tipc_subscr_start(struct net *net); -void tipc_subscr_stop(struct net *net); +int tipc_subscrp_check_overlap(struct tipc_subscription *sub, u32 found_lower, + u32 found_upper); +void tipc_subscrp_report_overlap(struct tipc_subscription *sub, + u32 found_lower, u32 found_upper, u32 event, + u32 port_ref, u32 node, int must); +int tipc_topsrv_start(struct net *net); +void tipc_topsrv_stop(struct net *net); #endif