/*
* net/tipc/name_table.c: TIPC name table code
*
- * Copyright (c) 2000-2006, 2014-2015, Ericsson AB
+ * Copyright (c) 2000-2006, 2014-2018, Ericsson AB
* Copyright (c) 2004-2008, 2010-2014, Wind River Systems
* All rights reserved.
*
#include "addr.h"
#include "node.h"
#include "group.h"
-#include <net/genetlink.h>
-
-#define TIPC_NAMETBL_SIZE 1024 /* must be a power of 2 */
/**
- * struct name_info - name sequence publication info
- * @node_list: circular list of publications made by own node
- * @cluster_list: circular list of publications made by own cluster
- * @zone_list: circular list of publications made by own zone
- * @node_list_size: number of entries in "node_list"
- * @cluster_list_size: number of entries in "cluster_list"
- * @zone_list_size: number of entries in "zone_list"
- *
- * Note: The zone list always contains at least one entry, since all
- * publications of the associated name sequence belong to it.
- * (The cluster and node lists may be empty.)
+ * struct service_range - container for all bindings of a service range
+ * @lower: service range lower bound
+ * @upper: service range upper bound
+ * @tree_node: member of service range RB tree
+ * @local_publ: list of identical publications made from this node
+ * Used by closest_first lookup and multicast lookup algorithm
+ * @all_publ: all publications identical to this one, whatever node and scope
+ * Used by round-robin lookup algorithm
*/
-struct name_info {
- struct list_head node_list;
- struct list_head cluster_list;
- struct list_head zone_list;
- u32 node_list_size;
- u32 cluster_list_size;
- u32 zone_list_size;
-};
-
-/**
- * struct sub_seq - container for all published instances of a name sequence
- * @lower: name sequence lower bound
- * @upper: name sequence upper bound
- * @info: pointer to name sequence publication info
- */
-struct sub_seq {
+struct service_range {
u32 lower;
u32 upper;
- struct name_info *info;
+ struct rb_node tree_node;
+ struct list_head local_publ;
+ struct list_head all_publ;
};
/**
- * struct name_seq - container for all published instances of a name type
- * @type: 32 bit 'type' value for name sequence
- * @sseq: pointer to dynamically-sized array of sub-sequences of this 'type';
- * sub-sequences are sorted in ascending order
- * @alloc: number of sub-sequences currently in array
- * @first_free: array index of first unused sub-sequence entry
- * @ns_list: links to adjacent name sequences in hash chain
- * @subscriptions: list of subscriptions for this 'type'
- * @lock: spinlock controlling access to publication lists of all sub-sequences
+ * struct tipc_service - container for all published instances of a service type
+ * @type: 32 bit 'type' value for service
+ * @ranges: rb tree containing all service ranges for this service
+ * @service_list: links to adjacent name ranges in hash chain
+ * @subscriptions: list of subscriptions for this service type
+ * @lock: spinlock controlling access to pertaining service ranges/publications
* @rcu: RCU callback head used for deferred freeing
*/
-struct name_seq {
+struct tipc_service {
u32 type;
- struct sub_seq *sseqs;
- u32 alloc;
- u32 first_free;
- struct hlist_node ns_list;
+ struct rb_root ranges;
+ struct hlist_node service_list;
struct list_head subscriptions;
- spinlock_t lock;
+ spinlock_t lock; /* Covers service range list */
struct rcu_head rcu;
};
}
/**
- * publ_create - create a publication structure
+ * tipc_publ_create - create a publication structure
*/
-static struct publication *publ_create(u32 type, u32 lower, u32 upper,
- u32 scope, u32 node, u32 port_ref,
- u32 key)
+static struct publication *tipc_publ_create(u32 type, u32 lower, u32 upper,
+ u32 scope, u32 node, u32 port,
+ u32 key)
{
struct publication *publ = kzalloc(sizeof(*publ), GFP_ATOMIC);
- if (publ == NULL) {
- pr_warn("Publication creation failure, no memory\n");
+
+ if (!publ)
return NULL;
- }
publ->type = type;
publ->lower = lower;
publ->upper = upper;
publ->scope = scope;
publ->node = node;
- publ->ref = port_ref;
+ publ->port = port;
publ->key = key;
- INIT_LIST_HEAD(&publ->pport_list);
+ INIT_LIST_HEAD(&publ->binding_sock);
+ INIT_LIST_HEAD(&publ->binding_node);
+ INIT_LIST_HEAD(&publ->local_publ);
+ INIT_LIST_HEAD(&publ->all_publ);
return publ;
}
/**
- * tipc_subseq_alloc - allocate a specified number of sub-sequence structures
- */
-static struct sub_seq *tipc_subseq_alloc(u32 cnt)
-{
- return kcalloc(cnt, sizeof(struct sub_seq), GFP_ATOMIC);
-}
-
-/**
- * tipc_nameseq_create - create a name sequence structure for the specified 'type'
+ * tipc_service_create - create a service structure for the specified 'type'
*
- * Allocates a single sub-sequence structure and sets it to all 0's.
+ * Allocates a single range structure and sets it to all 0's.
*/
-static struct name_seq *tipc_nameseq_create(u32 type, struct hlist_head *seq_head)
+static struct tipc_service *tipc_service_create(u32 type, struct hlist_head *hd)
{
- struct name_seq *nseq = kzalloc(sizeof(*nseq), GFP_ATOMIC);
- struct sub_seq *sseq = tipc_subseq_alloc(1);
+ struct tipc_service *service = kzalloc(sizeof(*service), GFP_ATOMIC);
- if (!nseq || !sseq) {
- pr_warn("Name sequence creation failed, no memory\n");
- kfree(nseq);
- kfree(sseq);
+ if (!service) {
+ pr_warn("Service creation failed, no memory\n");
return NULL;
}
- spin_lock_init(&nseq->lock);
- nseq->type = type;
- nseq->sseqs = sseq;
- nseq->alloc = 1;
- INIT_HLIST_NODE(&nseq->ns_list);
- INIT_LIST_HEAD(&nseq->subscriptions);
- hlist_add_head_rcu(&nseq->ns_list, seq_head);
- return nseq;
+ spin_lock_init(&service->lock);
+ service->type = type;
+ service->ranges = RB_ROOT;
+ INIT_HLIST_NODE(&service->service_list);
+ INIT_LIST_HEAD(&service->subscriptions);
+ hlist_add_head_rcu(&service->service_list, hd);
+ return service;
}
/**
- * nameseq_find_subseq - find sub-sequence (if any) matching a name instance
+ * tipc_service_find_range - find service range matching a service instance
*
- * Very time-critical, so binary searches through sub-sequence array.
+ * Very time-critical, so binary search through range rb tree
*/
-static struct sub_seq *nameseq_find_subseq(struct name_seq *nseq,
- u32 instance)
+static struct service_range *tipc_service_find_range(struct tipc_service *sc,
+ u32 instance)
{
- struct sub_seq *sseqs = nseq->sseqs;
- int low = 0;
- int high = nseq->first_free - 1;
- int mid;
-
- while (low <= high) {
- mid = (low + high) / 2;
- if (instance < sseqs[mid].lower)
- high = mid - 1;
- else if (instance > sseqs[mid].upper)
- low = mid + 1;
+ struct rb_node *n = sc->ranges.rb_node;
+ struct service_range *sr;
+
+ while (n) {
+ sr = container_of(n, struct service_range, tree_node);
+ if (sr->lower > instance)
+ n = n->rb_left;
+ else if (sr->upper < instance)
+ n = n->rb_right;
else
- return &sseqs[mid];
+ return sr;
}
return NULL;
}
-/**
- * nameseq_locate_subseq - determine position of name instance in sub-sequence
- *
- * Returns index in sub-sequence array of the entry that contains the specified
- * instance value; if no entry contains that value, returns the position
- * where a new entry for it would be inserted in the array.
- *
- * Note: Similar to binary search code for locating a sub-sequence.
- */
-static u32 nameseq_locate_subseq(struct name_seq *nseq, u32 instance)
+static struct service_range *tipc_service_create_range(struct tipc_service *sc,
+ u32 lower, u32 upper)
{
- struct sub_seq *sseqs = nseq->sseqs;
- int low = 0;
- int high = nseq->first_free - 1;
- int mid;
-
- while (low <= high) {
- mid = (low + high) / 2;
- if (instance < sseqs[mid].lower)
- high = mid - 1;
- else if (instance > sseqs[mid].upper)
- low = mid + 1;
+ struct rb_node **n, *parent = NULL;
+ struct service_range *sr, *tmp;
+
+ n = &sc->ranges.rb_node;
+ while (*n) {
+ tmp = container_of(*n, struct service_range, tree_node);
+ parent = *n;
+ tmp = container_of(parent, struct service_range, tree_node);
+ if (lower < tmp->lower)
+ n = &(*n)->rb_left;
+ else if (lower > tmp->lower)
+ n = &(*n)->rb_right;
+ else if (upper < tmp->upper)
+ n = &(*n)->rb_left;
+ else if (upper > tmp->upper)
+ n = &(*n)->rb_right;
else
- return mid;
+ return tmp;
}
- return low;
+ sr = kzalloc(sizeof(*sr), GFP_ATOMIC);
+ if (!sr)
+ return NULL;
+ sr->lower = lower;
+ sr->upper = upper;
+ INIT_LIST_HEAD(&sr->local_publ);
+ INIT_LIST_HEAD(&sr->all_publ);
+ rb_link_node(&sr->tree_node, parent, n);
+ rb_insert_color(&sr->tree_node, &sc->ranges);
+ return sr;
}
-/**
- * tipc_nameseq_insert_publ
- */
-static struct publication *tipc_nameseq_insert_publ(struct net *net,
- struct name_seq *nseq,
+static struct publication *tipc_service_insert_publ(struct net *net,
+ struct tipc_service *sc,
u32 type, u32 lower,
u32 upper, u32 scope,
- u32 node, u32 port, u32 key)
+ u32 node, u32 port,
+ u32 key)
{
- struct tipc_subscription *s;
- struct tipc_subscription *st;
- struct publication *publ;
- struct sub_seq *sseq;
- struct name_info *info;
- int created_subseq = 0;
-
- sseq = nameseq_find_subseq(nseq, lower);
- if (sseq) {
-
- /* Lower end overlaps existing entry => need an exact match */
- if ((sseq->lower != lower) || (sseq->upper != upper)) {
- return NULL;
- }
-
- info = sseq->info;
-
- /* Check if an identical publication already exists */
- list_for_each_entry(publ, &info->zone_list, zone_list) {
- if ((publ->ref == port) && (publ->key == key) &&
- (!publ->node || (publ->node == node)))
- return NULL;
- }
- } else {
- u32 inspos;
- struct sub_seq *freesseq;
-
- /* Find where lower end should be inserted */
- inspos = nameseq_locate_subseq(nseq, lower);
-
- /* Fail if upper end overlaps into an existing entry */
- if ((inspos < nseq->first_free) &&
- (upper >= nseq->sseqs[inspos].lower)) {
- return NULL;
- }
+ struct tipc_subscription *sub, *tmp;
+ struct service_range *sr;
+ struct publication *p;
+ bool first = false;
- /* Ensure there is space for new sub-sequence */
- if (nseq->first_free == nseq->alloc) {
- struct sub_seq *sseqs = tipc_subseq_alloc(nseq->alloc * 2);
+ sr = tipc_service_create_range(sc, lower, upper);
+ if (!sr)
+ goto err;
- if (!sseqs) {
- pr_warn("Cannot publish {%u,%u,%u}, no memory\n",
- type, lower, upper);
- return NULL;
- }
- memcpy(sseqs, nseq->sseqs,
- nseq->alloc * sizeof(struct sub_seq));
- kfree(nseq->sseqs);
- nseq->sseqs = sseqs;
- nseq->alloc *= 2;
- }
+ first = list_empty(&sr->all_publ);
- info = kzalloc(sizeof(*info), GFP_ATOMIC);
- if (!info) {
- pr_warn("Cannot publish {%u,%u,%u}, no memory\n",
- type, lower, upper);
+ /* Return if the publication already exists */
+ list_for_each_entry(p, &sr->all_publ, all_publ) {
+ if (p->key == key && (!p->node || p->node == node))
return NULL;
- }
-
- INIT_LIST_HEAD(&info->node_list);
- INIT_LIST_HEAD(&info->cluster_list);
- INIT_LIST_HEAD(&info->zone_list);
-
- /* Insert new sub-sequence */
- sseq = &nseq->sseqs[inspos];
- freesseq = &nseq->sseqs[nseq->first_free];
- memmove(sseq + 1, sseq, (freesseq - sseq) * sizeof(*sseq));
- memset(sseq, 0, sizeof(*sseq));
- nseq->first_free++;
- sseq->lower = lower;
- sseq->upper = upper;
- sseq->info = info;
- created_subseq = 1;
}
- /* Insert a publication */
- publ = publ_create(type, lower, upper, scope, node, port, key);
- if (!publ)
- return NULL;
-
- list_add(&publ->zone_list, &info->zone_list);
- info->zone_list_size++;
-
- if (in_own_cluster(net, node)) {
- list_add(&publ->cluster_list, &info->cluster_list);
- info->cluster_list_size++;
- }
-
- if (in_own_node(net, node)) {
- list_add(&publ->node_list, &info->node_list);
- info->node_list_size++;
- }
+ /* Create and insert publication */
+ p = tipc_publ_create(type, lower, upper, scope, node, port, key);
+ if (!p)
+ goto err;
+ if (in_own_node(net, node))
+ list_add(&p->local_publ, &sr->local_publ);
+ list_add(&p->all_publ, &sr->all_publ);
/* Any subscriptions waiting for notification? */
- list_for_each_entry_safe(s, st, &nseq->subscriptions, nameseq_list) {
- tipc_subscrp_report_overlap(s, publ->lower, publ->upper,
- TIPC_PUBLISHED, publ->ref,
- publ->node, publ->scope,
- created_subseq);
+ list_for_each_entry_safe(sub, tmp, &sc->subscriptions, service_list) {
+ tipc_sub_report_overlap(sub, p->lower, p->upper, TIPC_PUBLISHED,
+ p->port, p->node, p->scope, first);
}
- return publ;
+ return p;
+err:
+ pr_warn("Failed to bind to %u,%u,%u, no memory\n", type, lower, upper);
+ return NULL;
}
/**
- * tipc_nameseq_remove_publ
- *
- * NOTE: There may be cases where TIPC is asked to remove a publication
- * that is not in the name table. For example, if another node issues a
- * publication for a name sequence that overlaps an existing name sequence
- * the publication will not be recorded, which means the publication won't
- * be found when the name sequence is later withdrawn by that node.
- * A failed withdraw request simply returns a failure indication and lets the
- * caller issue any error or warning messages associated with such a problem.
+ * tipc_service_remove_publ - remove a publication from a service
*/
-static struct publication *tipc_nameseq_remove_publ(struct net *net,
- struct name_seq *nseq,
- u32 inst, u32 node,
- u32 ref, u32 key)
+static struct publication *tipc_service_remove_publ(struct net *net,
+ struct tipc_service *sc,
+ u32 lower, u32 upper,
+ u32 node, u32 key)
{
- struct publication *publ;
- struct sub_seq *sseq = nameseq_find_subseq(nseq, inst);
- struct name_info *info;
- struct sub_seq *free;
- struct tipc_subscription *s, *st;
- int removed_subseq = 0;
-
- if (!sseq)
- return NULL;
+ struct tipc_subscription *sub, *tmp;
+ struct service_range *sr;
+ struct publication *p;
+ bool found = false;
+ bool last = false;
+ struct rb_node *n;
- info = sseq->info;
+ sr = tipc_service_find_range(sc, lower);
+ if (!sr)
+ return NULL;
- /* Locate publication, if it exists */
- list_for_each_entry(publ, &info->zone_list, zone_list) {
- if ((publ->key == key) && (publ->ref == ref) &&
- (!publ->node || (publ->node == node)))
- goto found;
+ /* Find exact matching service range */
+ for (n = &sr->tree_node; n; n = rb_next(n)) {
+ sr = container_of(n, struct service_range, tree_node);
+ if (sr->upper == upper)
+ break;
}
- return NULL;
-
-found:
- /* Remove publication from zone scope list */
- list_del(&publ->zone_list);
- info->zone_list_size--;
+ if (!n || sr->lower != lower || sr->upper != upper)
+ return NULL;
- /* Remove publication from cluster scope list, if present */
- if (in_own_cluster(net, node)) {
- list_del(&publ->cluster_list);
- info->cluster_list_size--;
+ /* Find publication, if it exists */
+ list_for_each_entry(p, &sr->all_publ, all_publ) {
+ if (p->key != key || (node && node != p->node))
+ continue;
+ found = true;
+ break;
}
+ if (!found)
+ return NULL;
- /* Remove publication from node scope list, if present */
- if (in_own_node(net, node)) {
- list_del(&publ->node_list);
- info->node_list_size--;
- }
+ list_del(&p->all_publ);
+ list_del(&p->local_publ);
- /* Contract subseq list if no more publications for that subseq */
- if (list_empty(&info->zone_list)) {
- kfree(info);
- free = &nseq->sseqs[nseq->first_free--];
- memmove(sseq, sseq + 1, (free - (sseq + 1)) * sizeof(*sseq));
- removed_subseq = 1;
+ /* Remove service range item if this was its last publication */
+ if (list_empty(&sr->all_publ)) {
+ last = true;
+ rb_erase(&sr->tree_node, &sc->ranges);
+ kfree(sr);
}
/* Notify any waiting subscriptions */
- list_for_each_entry_safe(s, st, &nseq->subscriptions, nameseq_list) {
- tipc_subscrp_report_overlap(s, publ->lower, publ->upper,
- TIPC_WITHDRAWN, publ->ref,
- publ->node, publ->scope,
- removed_subseq);
+ list_for_each_entry_safe(sub, tmp, &sc->subscriptions, service_list) {
+ tipc_sub_report_overlap(sub, p->lower, p->upper, TIPC_WITHDRAWN,
+ p->port, p->node, p->scope, last);
}
-
- return publ;
+ return p;
}
/**
- * tipc_nameseq_subscribe - attach a subscription, and optionally
- * issue the prescribed number of events if there is any sub-
- * sequence overlapping with the requested sequence
+ * tipc_service_subscribe - attach a subscription, and optionally
+ * issue the prescribed number of events if there is any service
+ * range overlapping with the requested range
*/
-static void tipc_nameseq_subscribe(struct name_seq *nseq,
+static void tipc_service_subscribe(struct tipc_service *service,
struct tipc_subscription *sub)
{
- struct sub_seq *sseq = nseq->sseqs;
+ struct tipc_subscr *sb = &sub->evt.s;
+ struct service_range *sr;
struct tipc_name_seq ns;
- struct tipc_subscr *s = &sub->evt.s;
- bool no_status;
+ struct publication *p;
+ struct rb_node *n;
+ bool first;
- ns.type = tipc_sub_read(s, seq.type);
- ns.lower = tipc_sub_read(s, seq.lower);
- ns.upper = tipc_sub_read(s, seq.upper);
- no_status = tipc_sub_read(s, filter) & TIPC_SUB_NO_STATUS;
+ ns.type = tipc_sub_read(sb, seq.type);
+ ns.lower = tipc_sub_read(sb, seq.lower);
+ ns.upper = tipc_sub_read(sb, seq.upper);
- tipc_subscrp_get(sub);
- list_add(&sub->nameseq_list, &nseq->subscriptions);
+ tipc_sub_get(sub);
+ list_add(&sub->service_list, &service->subscriptions);
- if (no_status || !sseq)
+ if (tipc_sub_read(sb, filter) & TIPC_SUB_NO_STATUS)
return;
- while (sseq != &nseq->sseqs[nseq->first_free]) {
- if (tipc_subscrp_check_overlap(&ns, 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_subscrp_report_overlap(sub, sseq->lower,
- sseq->upper,
- TIPC_PUBLISHED,
- crs->ref, crs->node,
- crs->scope,
- must_report);
- must_report = 0;
- }
+ for (n = rb_first(&service->ranges); n; n = rb_next(n)) {
+ sr = container_of(n, struct service_range, tree_node);
+ if (sr->lower > ns.upper)
+ break;
+ if (!tipc_sub_check_overlap(&ns, sr->lower, sr->upper))
+ continue;
+ first = true;
+
+ list_for_each_entry(p, &sr->all_publ, all_publ) {
+ tipc_sub_report_overlap(sub, sr->lower, sr->upper,
+ TIPC_PUBLISHED, p->port,
+ p->node, p->scope, first);
+ first = false;
}
- sseq++;
}
}
-static struct name_seq *nametbl_find_seq(struct net *net, u32 type)
+static struct tipc_service *tipc_service_find(struct net *net, u32 type)
{
- struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct hlist_head *seq_head;
- struct name_seq *ns;
-
- seq_head = &tn->nametbl->seq_hlist[hash(type)];
- hlist_for_each_entry_rcu(ns, seq_head, ns_list) {
- if (ns->type == type)
- return ns;
+ struct name_table *nt = tipc_name_table(net);
+ struct hlist_head *service_head;
+ struct tipc_service *service;
+
+ service_head = &nt->services[hash(type)];
+ hlist_for_each_entry_rcu(service, service_head, service_list) {
+ if (service->type == type)
+ return service;
}
-
return NULL;
};
struct publication *tipc_nametbl_insert_publ(struct net *net, u32 type,
- u32 lower, u32 upper, u32 scope,
- u32 node, u32 port, u32 key)
+ u32 lower, u32 upper,
+ u32 scope, u32 node,
+ u32 port, u32 key)
{
- struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct publication *publ;
- struct name_seq *seq = nametbl_find_seq(net, type);
- int index = hash(type);
-
- if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE) ||
- (lower > upper)) {
- pr_debug("Failed to publish illegal {%u,%u,%u} with scope %u\n",
+ struct name_table *nt = tipc_name_table(net);
+ struct tipc_service *sc;
+ struct publication *p;
+
+ if (scope > TIPC_NODE_SCOPE || lower > upper) {
+ pr_debug("Failed to bind illegal {%u,%u,%u} with scope %u\n",
type, lower, upper, scope);
return NULL;
}
-
- if (!seq)
- seq = tipc_nameseq_create(type, &tn->nametbl->seq_hlist[index]);
- if (!seq)
+ sc = tipc_service_find(net, type);
+ if (!sc)
+ sc = tipc_service_create(type, &nt->services[hash(type)]);
+ if (!sc)
return NULL;
- spin_lock_bh(&seq->lock);
- publ = tipc_nameseq_insert_publ(net, seq, type, lower, upper,
- scope, node, port, key);
- spin_unlock_bh(&seq->lock);
- return publ;
+ spin_lock_bh(&sc->lock);
+ p = tipc_service_insert_publ(net, sc, type, lower, upper,
+ scope, node, port, key);
+ spin_unlock_bh(&sc->lock);
+ return p;
}
struct publication *tipc_nametbl_remove_publ(struct net *net, u32 type,
- u32 lower, u32 node, u32 ref,
- u32 key)
+ u32 lower, u32 upper,
+ u32 node, u32 key)
{
- struct publication *publ;
- struct name_seq *seq = nametbl_find_seq(net, type);
+ struct tipc_service *sc = tipc_service_find(net, type);
+ struct publication *p = NULL;
- if (!seq)
+ if (!sc)
return NULL;
- spin_lock_bh(&seq->lock);
- publ = tipc_nameseq_remove_publ(net, seq, lower, node, ref, key);
- if (!seq->first_free && list_empty(&seq->subscriptions)) {
- hlist_del_init_rcu(&seq->ns_list);
- kfree(seq->sseqs);
- spin_unlock_bh(&seq->lock);
- kfree_rcu(seq, rcu);
- return publ;
+ spin_lock_bh(&sc->lock);
+ p = tipc_service_remove_publ(net, sc, lower, upper, node, key);
+
+ /* Delete service item if this no more publications and subscriptions */
+ if (RB_EMPTY_ROOT(&sc->ranges) && list_empty(&sc->subscriptions)) {
+ hlist_del_init_rcu(&sc->service_list);
+ kfree_rcu(sc, rcu);
}
- spin_unlock_bh(&seq->lock);
- return publ;
+ spin_unlock_bh(&sc->lock);
+ return p;
}
/**
- * tipc_nametbl_translate - perform name translation
+ * tipc_nametbl_translate - perform service instance to socket translation
*
- * On entry, 'destnode' is the search domain used during translation.
+ * On entry, 'dnode' is the search domain used during translation.
*
* On exit:
- * - if name translation is deferred to another node/cluster/zone,
- * leaves 'destnode' unchanged (will be non-zero) and returns 0
- * - if name translation is attempted and succeeds, sets 'destnode'
- * to publishing node and returns port reference (will be non-zero)
- * - if name translation is attempted and fails, sets 'destnode' to 0
- * and returns 0
+ * - if translation is deferred to another node, leave 'dnode' unchanged and
+ * return 0
+ * - if translation is attempted and succeeds, set 'dnode' to the publishing
+ * node and return the published (non-zero) port number
+ * - if translation is attempted and fails, set 'dnode' to 0 and return 0
+ *
+ * Note that for legacy users (node configured with Z.C.N address format) the
+ * 'closest-first' lookup algorithm must be maintained, i.e., if dnode is 0
+ * we must look in the local binding list first
*/
-u32 tipc_nametbl_translate(struct net *net, u32 type, u32 instance,
- u32 *destnode)
+u32 tipc_nametbl_translate(struct net *net, u32 type, u32 instance, u32 *dnode)
{
- struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct sub_seq *sseq;
- struct name_info *info;
- struct publication *publ;
- struct name_seq *seq;
- u32 ref = 0;
+ struct tipc_net *tn = tipc_net(net);
+ bool legacy = tn->legacy_addr_format;
+ u32 self = tipc_own_addr(net);
+ struct service_range *sr;
+ struct tipc_service *sc;
+ struct list_head *list;
+ struct publication *p;
+ u32 port = 0;
u32 node = 0;
- if (!tipc_in_scope(*destnode, tn->own_addr))
+ if (!tipc_in_scope(legacy, *dnode, self))
return 0;
rcu_read_lock();
- seq = nametbl_find_seq(net, type);
- if (unlikely(!seq))
+ sc = tipc_service_find(net, type);
+ if (unlikely(!sc))
goto not_found;
- spin_lock_bh(&seq->lock);
- sseq = nameseq_find_subseq(seq, instance);
- if (unlikely(!sseq))
+
+ spin_lock_bh(&sc->lock);
+ sr = tipc_service_find_range(sc, instance);
+ if (unlikely(!sr))
goto no_match;
- info = sseq->info;
-
- /* Closest-First Algorithm */
- if (likely(!*destnode)) {
- if (!list_empty(&info->node_list)) {
- publ = list_first_entry(&info->node_list,
- struct publication,
- node_list);
- list_move_tail(&publ->node_list,
- &info->node_list);
- } else if (!list_empty(&info->cluster_list)) {
- publ = list_first_entry(&info->cluster_list,
- struct publication,
- cluster_list);
- list_move_tail(&publ->cluster_list,
- &info->cluster_list);
- } else {
- publ = list_first_entry(&info->zone_list,
- struct publication,
- zone_list);
- list_move_tail(&publ->zone_list,
- &info->zone_list);
- }
- }
- /* Round-Robin Algorithm */
- else if (*destnode == tn->own_addr) {
- if (list_empty(&info->node_list))
- goto no_match;
- publ = list_first_entry(&info->node_list, struct publication,
- node_list);
- list_move_tail(&publ->node_list, &info->node_list);
- } else if (in_own_cluster_exact(net, *destnode)) {
- if (list_empty(&info->cluster_list))
+ /* Select lookup algorithm: local, closest-first or round-robin */
+ if (*dnode == self) {
+ list = &sr->local_publ;
+ if (list_empty(list))
goto no_match;
- publ = list_first_entry(&info->cluster_list, struct publication,
- cluster_list);
- list_move_tail(&publ->cluster_list, &info->cluster_list);
+ p = list_first_entry(list, struct publication, local_publ);
+ list_move_tail(&p->local_publ, &sr->local_publ);
+ } else if (legacy && !*dnode && !list_empty(&sr->local_publ)) {
+ list = &sr->local_publ;
+ p = list_first_entry(list, struct publication, local_publ);
+ list_move_tail(&p->local_publ, &sr->local_publ);
} else {
- publ = list_first_entry(&info->zone_list, struct publication,
- zone_list);
- list_move_tail(&publ->zone_list, &info->zone_list);
+ list = &sr->all_publ;
+ p = list_first_entry(list, struct publication, all_publ);
+ list_move_tail(&p->all_publ, &sr->all_publ);
}
-
- ref = publ->ref;
- node = publ->node;
+ port = p->port;
+ node = p->node;
no_match:
- spin_unlock_bh(&seq->lock);
+ spin_unlock_bh(&sc->lock);
not_found:
rcu_read_unlock();
- *destnode = node;
- return ref;
+ *dnode = node;
+ return port;
}
bool tipc_nametbl_lookup(struct net *net, u32 type, u32 instance, u32 scope,
bool all)
{
u32 self = tipc_own_addr(net);
- struct publication *publ;
- struct name_info *info;
- struct name_seq *seq;
- struct sub_seq *sseq;
+ struct service_range *sr;
+ struct tipc_service *sc;
+ struct publication *p;
*dstcnt = 0;
rcu_read_lock();
- seq = nametbl_find_seq(net, type);
- if (unlikely(!seq))
+ sc = tipc_service_find(net, type);
+ if (unlikely(!sc))
goto exit;
- spin_lock_bh(&seq->lock);
- sseq = nameseq_find_subseq(seq, instance);
- if (likely(sseq)) {
- info = sseq->info;
- list_for_each_entry(publ, &info->zone_list, zone_list) {
- if (publ->scope != scope)
- continue;
- if (publ->ref == exclude && publ->node == self)
- continue;
- tipc_dest_push(dsts, publ->node, publ->ref);
- (*dstcnt)++;
- if (all)
- continue;
- list_move_tail(&publ->zone_list, &info->zone_list);
- break;
- }
+
+ spin_lock_bh(&sc->lock);
+
+ sr = tipc_service_find_range(sc, instance);
+ if (!sr)
+ goto no_match;
+
+ list_for_each_entry(p, &sr->all_publ, all_publ) {
+ if (p->scope != scope)
+ continue;
+ if (p->port == exclude && p->node == self)
+ continue;
+ tipc_dest_push(dsts, p->node, p->port);
+ (*dstcnt)++;
+ if (all)
+ continue;
+ list_move_tail(&p->all_publ, &sr->all_publ);
+ break;
}
- spin_unlock_bh(&seq->lock);
+no_match:
+ spin_unlock_bh(&sc->lock);
exit:
rcu_read_unlock();
return !list_empty(dsts);
}
-int tipc_nametbl_mc_lookup(struct net *net, u32 type, u32 lower, u32 upper,
- u32 scope, bool exact, struct list_head *dports)
+void tipc_nametbl_mc_lookup(struct net *net, u32 type, u32 lower, u32 upper,
+ u32 scope, bool exact, struct list_head *dports)
{
- struct sub_seq *sseq_stop;
- struct name_info *info;
+ struct service_range *sr;
+ struct tipc_service *sc;
struct publication *p;
- struct name_seq *seq;
- struct sub_seq *sseq;
- int res = 0;
+ struct rb_node *n;
rcu_read_lock();
- seq = nametbl_find_seq(net, type);
- if (!seq)
+ sc = tipc_service_find(net, type);
+ if (!sc)
goto exit;
- spin_lock_bh(&seq->lock);
- sseq = seq->sseqs + nameseq_locate_subseq(seq, lower);
- sseq_stop = seq->sseqs + seq->first_free;
- for (; sseq != sseq_stop; sseq++) {
- if (sseq->lower > upper)
+ spin_lock_bh(&sc->lock);
+
+ for (n = rb_first(&sc->ranges); n; n = rb_next(n)) {
+ sr = container_of(n, struct service_range, tree_node);
+ if (sr->upper < lower)
+ continue;
+ if (sr->lower > upper)
break;
- info = sseq->info;
- list_for_each_entry(p, &info->node_list, node_list) {
+ list_for_each_entry(p, &sr->local_publ, local_publ) {
if (p->scope == scope || (!exact && p->scope < scope))
- tipc_dest_push(dports, 0, p->ref);
+ tipc_dest_push(dports, 0, p->port);
}
-
- if (info->cluster_list_size != info->node_list_size)
- res = 1;
}
- spin_unlock_bh(&seq->lock);
+ spin_unlock_bh(&sc->lock);
exit:
rcu_read_unlock();
- return res;
}
/* tipc_nametbl_lookup_dst_nodes - find broadcast destination nodes
* - Creates list of nodes that overlap the given multicast address
- * - Determines if any node local ports overlap
+ * - Determines if any node local destinations overlap
*/
void tipc_nametbl_lookup_dst_nodes(struct net *net, u32 type, u32 lower,
u32 upper, struct tipc_nlist *nodes)
{
- struct sub_seq *sseq, *stop;
- struct publication *publ;
- struct name_info *info;
- struct name_seq *seq;
+ struct service_range *sr;
+ struct tipc_service *sc;
+ struct publication *p;
+ struct rb_node *n;
rcu_read_lock();
- seq = nametbl_find_seq(net, type);
- if (!seq)
+ sc = tipc_service_find(net, type);
+ if (!sc)
goto exit;
- spin_lock_bh(&seq->lock);
- sseq = seq->sseqs + nameseq_locate_subseq(seq, lower);
- stop = seq->sseqs + seq->first_free;
- for (; sseq != stop && sseq->lower <= upper; sseq++) {
- info = sseq->info;
- list_for_each_entry(publ, &info->zone_list, zone_list) {
- tipc_nlist_add(nodes, publ->node);
+ spin_lock_bh(&sc->lock);
+
+ for (n = rb_first(&sc->ranges); n; n = rb_next(n)) {
+ sr = container_of(n, struct service_range, tree_node);
+ if (sr->upper < lower)
+ continue;
+ if (sr->lower > upper)
+ break;
+ list_for_each_entry(p, &sr->all_publ, all_publ) {
+ tipc_nlist_add(nodes, p->node);
}
}
- spin_unlock_bh(&seq->lock);
+ spin_unlock_bh(&sc->lock);
exit:
rcu_read_unlock();
}
void tipc_nametbl_build_group(struct net *net, struct tipc_group *grp,
u32 type, u32 scope)
{
- struct sub_seq *sseq, *stop;
- struct name_info *info;
+ struct service_range *sr;
+ struct tipc_service *sc;
struct publication *p;
- struct name_seq *seq;
+ struct rb_node *n;
rcu_read_lock();
- seq = nametbl_find_seq(net, type);
- if (!seq)
+ sc = tipc_service_find(net, type);
+ if (!sc)
goto exit;
- spin_lock_bh(&seq->lock);
- sseq = seq->sseqs;
- stop = seq->sseqs + seq->first_free;
- for (; sseq != stop; sseq++) {
- info = sseq->info;
- list_for_each_entry(p, &info->zone_list, zone_list) {
+ spin_lock_bh(&sc->lock);
+ for (n = rb_first(&sc->ranges); n; n = rb_next(n)) {
+ sr = container_of(n, struct service_range, tree_node);
+ list_for_each_entry(p, &sr->all_publ, all_publ) {
if (p->scope != scope)
continue;
- tipc_group_add_member(grp, p->node, p->ref, p->lower);
+ tipc_group_add_member(grp, p->node, p->port, p->lower);
}
}
- spin_unlock_bh(&seq->lock);
+ spin_unlock_bh(&sc->lock);
exit:
rcu_read_unlock();
}
-/*
- * tipc_nametbl_publish - add name publication to network name tables
+/* tipc_nametbl_publish - add service binding to name table
*/
struct publication *tipc_nametbl_publish(struct net *net, u32 type, u32 lower,
- u32 upper, u32 scope, u32 port_ref,
+ u32 upper, u32 scope, u32 port,
u32 key)
{
- struct publication *publ;
- struct sk_buff *buf = NULL;
- struct tipc_net *tn = net_generic(net, tipc_net_id);
+ struct name_table *nt = tipc_name_table(net);
+ struct tipc_net *tn = tipc_net(net);
+ struct publication *p = NULL;
+ struct sk_buff *skb = NULL;
spin_lock_bh(&tn->nametbl_lock);
- if (tn->nametbl->local_publ_count >= TIPC_MAX_PUBLICATIONS) {
- pr_warn("Publication failed, local publication limit reached (%u)\n",
- TIPC_MAX_PUBLICATIONS);
- spin_unlock_bh(&tn->nametbl_lock);
- return NULL;
+
+ if (nt->local_publ_count >= TIPC_MAX_PUBL) {
+ pr_warn("Bind failed, max limit %u reached\n", TIPC_MAX_PUBL);
+ goto exit;
}
- publ = tipc_nametbl_insert_publ(net, type, lower, upper, scope,
- tn->own_addr, port_ref, key);
- if (likely(publ)) {
- tn->nametbl->local_publ_count++;
- buf = tipc_named_publish(net, publ);
- /* Any pending external events? */
- tipc_named_process_backlog(net);
+ p = tipc_nametbl_insert_publ(net, type, lower, upper, scope,
+ tipc_own_addr(net), port, key);
+ if (p) {
+ nt->local_publ_count++;
+ skb = tipc_named_publish(net, p);
}
+exit:
spin_unlock_bh(&tn->nametbl_lock);
- if (buf)
- tipc_node_broadcast(net, buf);
- return publ;
+ if (skb)
+ tipc_node_broadcast(net, skb);
+ return p;
}
/**
- * tipc_nametbl_withdraw - withdraw name publication from network name tables
+ * tipc_nametbl_withdraw - withdraw a service binding
*/
-int tipc_nametbl_withdraw(struct net *net, u32 type, u32 lower, u32 ref,
- u32 key)
+int tipc_nametbl_withdraw(struct net *net, u32 type, u32 lower,
+ u32 upper, u32 key)
{
- struct publication *publ;
+ struct name_table *nt = tipc_name_table(net);
+ struct tipc_net *tn = tipc_net(net);
+ u32 self = tipc_own_addr(net);
struct sk_buff *skb = NULL;
- struct tipc_net *tn = net_generic(net, tipc_net_id);
+ struct publication *p;
spin_lock_bh(&tn->nametbl_lock);
- publ = tipc_nametbl_remove_publ(net, type, lower, tn->own_addr,
- ref, key);
- if (likely(publ)) {
- tn->nametbl->local_publ_count--;
- skb = tipc_named_withdraw(net, publ);
- /* Any pending external events? */
- tipc_named_process_backlog(net);
- list_del_init(&publ->pport_list);
- kfree_rcu(publ, rcu);
+
+ p = tipc_nametbl_remove_publ(net, type, lower, upper, self, key);
+ if (p) {
+ nt->local_publ_count--;
+ skb = tipc_named_withdraw(net, p);
+ list_del_init(&p->binding_sock);
+ kfree_rcu(p, rcu);
} else {
- pr_err("Unable to remove local publication\n"
- "(type=%u, lower=%u, ref=%u, key=%u)\n",
- type, lower, ref, key);
+ pr_err("Failed to remove local publication {%u,%u,%u}/%u\n",
+ type, lower, upper, key);
}
spin_unlock_bh(&tn->nametbl_lock);
*/
void tipc_nametbl_subscribe(struct tipc_subscription *sub)
{
- struct tipc_server *srv = sub->server;
- struct tipc_net *tn = tipc_net(srv->net);
+ struct name_table *nt = tipc_name_table(sub->net);
+ struct tipc_net *tn = tipc_net(sub->net);
struct tipc_subscr *s = &sub->evt.s;
u32 type = tipc_sub_read(s, seq.type);
- int index = hash(type);
- struct name_seq *seq;
- struct tipc_name_seq ns;
+ struct tipc_service *sc;
spin_lock_bh(&tn->nametbl_lock);
- seq = nametbl_find_seq(srv->net, type);
- if (!seq)
- seq = tipc_nameseq_create(type, &tn->nametbl->seq_hlist[index]);
- if (seq) {
- spin_lock_bh(&seq->lock);
- tipc_nameseq_subscribe(seq, sub);
- spin_unlock_bh(&seq->lock);
+ sc = tipc_service_find(sub->net, type);
+ if (!sc)
+ sc = tipc_service_create(type, &nt->services[hash(type)]);
+ if (sc) {
+ spin_lock_bh(&sc->lock);
+ tipc_service_subscribe(sc, sub);
+ spin_unlock_bh(&sc->lock);
} else {
- ns.type = tipc_sub_read(s, seq.type);
- ns.lower = tipc_sub_read(s, seq.lower);
- ns.upper = tipc_sub_read(s, seq.upper);
- pr_warn("Failed to create subscription for {%u,%u,%u}\n",
- ns.type, ns.lower, ns.upper);
+ pr_warn("Failed to subscribe for {%u,%u,%u}\n", type,
+ tipc_sub_read(s, seq.lower),
+ tipc_sub_read(s, seq.upper));
}
spin_unlock_bh(&tn->nametbl_lock);
}
*/
void tipc_nametbl_unsubscribe(struct tipc_subscription *sub)
{
- struct tipc_server *srv = sub->server;
+ struct tipc_net *tn = tipc_net(sub->net);
struct tipc_subscr *s = &sub->evt.s;
- struct tipc_net *tn = tipc_net(srv->net);
- struct name_seq *seq;
u32 type = tipc_sub_read(s, seq.type);
+ struct tipc_service *sc;
spin_lock_bh(&tn->nametbl_lock);
- seq = nametbl_find_seq(srv->net, type);
- if (seq != NULL) {
- spin_lock_bh(&seq->lock);
- list_del_init(&sub->nameseq_list);
- tipc_subscrp_put(sub);
- if (!seq->first_free && list_empty(&seq->subscriptions)) {
- hlist_del_init_rcu(&seq->ns_list);
- kfree(seq->sseqs);
- spin_unlock_bh(&seq->lock);
- kfree_rcu(seq, rcu);
- } else {
- spin_unlock_bh(&seq->lock);
- }
+ sc = tipc_service_find(sub->net, type);
+ if (!sc)
+ goto exit;
+
+ spin_lock_bh(&sc->lock);
+ list_del_init(&sub->service_list);
+ tipc_sub_put(sub);
+
+ /* Delete service item if no more publications and subscriptions */
+ if (RB_EMPTY_ROOT(&sc->ranges) && list_empty(&sc->subscriptions)) {
+ hlist_del_init_rcu(&sc->service_list);
+ kfree_rcu(sc, rcu);
}
+ spin_unlock_bh(&sc->lock);
+exit:
spin_unlock_bh(&tn->nametbl_lock);
}
int tipc_nametbl_init(struct net *net)
{
- struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct name_table *tipc_nametbl;
+ struct tipc_net *tn = tipc_net(net);
+ struct name_table *nt;
int i;
- tipc_nametbl = kzalloc(sizeof(*tipc_nametbl), GFP_ATOMIC);
- if (!tipc_nametbl)
+ nt = kzalloc(sizeof(*nt), GFP_ATOMIC);
+ if (!nt)
return -ENOMEM;
for (i = 0; i < TIPC_NAMETBL_SIZE; i++)
- INIT_HLIST_HEAD(&tipc_nametbl->seq_hlist[i]);
+ INIT_HLIST_HEAD(&nt->services[i]);
- INIT_LIST_HEAD(&tipc_nametbl->publ_list[TIPC_ZONE_SCOPE]);
- INIT_LIST_HEAD(&tipc_nametbl->publ_list[TIPC_CLUSTER_SCOPE]);
- INIT_LIST_HEAD(&tipc_nametbl->publ_list[TIPC_NODE_SCOPE]);
- tn->nametbl = tipc_nametbl;
+ INIT_LIST_HEAD(&nt->node_scope);
+ INIT_LIST_HEAD(&nt->cluster_scope);
+ tn->nametbl = nt;
spin_lock_init(&tn->nametbl_lock);
return 0;
}
/**
- * tipc_purge_publications - remove all publications for a given type
- *
- * tipc_nametbl_lock must be held when calling this function
+ * tipc_service_delete - purge all publications for a service and delete it
*/
-static void tipc_purge_publications(struct net *net, struct name_seq *seq)
+static void tipc_service_delete(struct net *net, struct tipc_service *sc)
{
- struct publication *publ, *safe;
- struct sub_seq *sseq;
- struct name_info *info;
-
- spin_lock_bh(&seq->lock);
- sseq = seq->sseqs;
- info = sseq->info;
- list_for_each_entry_safe(publ, safe, &info->zone_list, zone_list) {
- tipc_nameseq_remove_publ(net, seq, publ->lower, publ->node,
- publ->ref, publ->key);
- kfree_rcu(publ, rcu);
+ struct service_range *sr, *tmpr;
+ struct publication *p, *tmpb;
+
+ spin_lock_bh(&sc->lock);
+ rbtree_postorder_for_each_entry_safe(sr, tmpr, &sc->ranges, tree_node) {
+ list_for_each_entry_safe(p, tmpb,
+ &sr->all_publ, all_publ) {
+ tipc_service_remove_publ(net, sc, p->lower, p->upper,
+ p->node, p->key);
+ kfree_rcu(p, rcu);
+ }
}
- hlist_del_init_rcu(&seq->ns_list);
- kfree(seq->sseqs);
- spin_unlock_bh(&seq->lock);
-
- kfree_rcu(seq, rcu);
+ hlist_del_init_rcu(&sc->service_list);
+ spin_unlock_bh(&sc->lock);
+ kfree_rcu(sc, rcu);
}
void tipc_nametbl_stop(struct net *net)
{
+ struct name_table *nt = tipc_name_table(net);
+ struct tipc_net *tn = tipc_net(net);
+ struct hlist_head *service_head;
+ struct tipc_service *service;
u32 i;
- struct name_seq *seq;
- struct hlist_head *seq_head;
- struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct name_table *tipc_nametbl = tn->nametbl;
/* Verify name table is empty and purge any lingering
* publications, then release the name table
*/
spin_lock_bh(&tn->nametbl_lock);
for (i = 0; i < TIPC_NAMETBL_SIZE; i++) {
- if (hlist_empty(&tipc_nametbl->seq_hlist[i]))
+ if (hlist_empty(&nt->services[i]))
continue;
- seq_head = &tipc_nametbl->seq_hlist[i];
- hlist_for_each_entry_rcu(seq, seq_head, ns_list) {
- tipc_purge_publications(net, seq);
+ service_head = &nt->services[i];
+ hlist_for_each_entry_rcu(service, service_head, service_list) {
+ tipc_service_delete(net, service);
}
}
spin_unlock_bh(&tn->nametbl_lock);
synchronize_net();
- kfree(tipc_nametbl);
-
+ kfree(nt);
}
static int __tipc_nl_add_nametable_publ(struct tipc_nl_msg *msg,
- struct name_seq *seq,
- struct sub_seq *sseq, u32 *last_publ)
+ struct tipc_service *service,
+ struct service_range *sr,
+ u32 *last_key)
{
- void *hdr;
- struct nlattr *attrs;
- struct nlattr *publ;
struct publication *p;
+ struct nlattr *attrs;
+ struct nlattr *b;
+ void *hdr;
- if (*last_publ) {
- list_for_each_entry(p, &sseq->info->zone_list, zone_list)
- if (p->key == *last_publ)
+ if (*last_key) {
+ list_for_each_entry(p, &sr->all_publ, all_publ)
+ if (p->key == *last_key)
break;
- if (p->key != *last_publ)
+ if (p->key != *last_key)
return -EPIPE;
} else {
- p = list_first_entry(&sseq->info->zone_list, struct publication,
- zone_list);
+ p = list_first_entry(&sr->all_publ,
+ struct publication,
+ all_publ);
}
- list_for_each_entry_from(p, &sseq->info->zone_list, zone_list) {
- *last_publ = p->key;
+ list_for_each_entry_from(p, &sr->all_publ, all_publ) {
+ *last_key = p->key;
hdr = genlmsg_put(msg->skb, msg->portid, msg->seq,
&tipc_genl_family, NLM_F_MULTI,
if (!attrs)
goto msg_full;
- publ = nla_nest_start(msg->skb, TIPC_NLA_NAME_TABLE_PUBL);
- if (!publ)
+ b = nla_nest_start(msg->skb, TIPC_NLA_NAME_TABLE_PUBL);
+ if (!b)
goto attr_msg_full;
- if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_TYPE, seq->type))
+ if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_TYPE, service->type))
goto publ_msg_full;
- if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_LOWER, sseq->lower))
+ if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_LOWER, sr->lower))
goto publ_msg_full;
- if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_UPPER, sseq->upper))
+ if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_UPPER, sr->upper))
goto publ_msg_full;
if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_SCOPE, p->scope))
goto publ_msg_full;
if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_NODE, p->node))
goto publ_msg_full;
- if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_REF, p->ref))
+ if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_REF, p->port))
goto publ_msg_full;
if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_KEY, p->key))
goto publ_msg_full;
- nla_nest_end(msg->skb, publ);
+ nla_nest_end(msg->skb, b);
nla_nest_end(msg->skb, attrs);
genlmsg_end(msg->skb, hdr);
}
- *last_publ = 0;
+ *last_key = 0;
return 0;
publ_msg_full:
- nla_nest_cancel(msg->skb, publ);
+ nla_nest_cancel(msg->skb, b);
attr_msg_full:
nla_nest_cancel(msg->skb, attrs);
msg_full:
return -EMSGSIZE;
}
-static int __tipc_nl_subseq_list(struct tipc_nl_msg *msg, struct name_seq *seq,
- u32 *last_lower, u32 *last_publ)
+static int __tipc_nl_service_range_list(struct tipc_nl_msg *msg,
+ struct tipc_service *sc,
+ u32 *last_lower, u32 *last_key)
{
- struct sub_seq *sseq;
- struct sub_seq *sseq_start;
+ struct service_range *sr;
+ struct rb_node *n;
int err;
- if (*last_lower) {
- sseq_start = nameseq_find_subseq(seq, *last_lower);
- if (!sseq_start)
- return -EPIPE;
- } else {
- sseq_start = seq->sseqs;
- }
-
- for (sseq = sseq_start; sseq != &seq->sseqs[seq->first_free]; sseq++) {
- err = __tipc_nl_add_nametable_publ(msg, seq, sseq, last_publ);
+ for (n = rb_first(&sc->ranges); n; n = rb_next(n)) {
+ sr = container_of(n, struct service_range, tree_node);
+ if (sr->lower < *last_lower)
+ continue;
+ err = __tipc_nl_add_nametable_publ(msg, sc, sr, last_key);
if (err) {
- *last_lower = sseq->lower;
+ *last_lower = sr->lower;
return err;
}
}
*last_lower = 0;
-
return 0;
}
-static int tipc_nl_seq_list(struct net *net, struct tipc_nl_msg *msg,
- u32 *last_type, u32 *last_lower, u32 *last_publ)
+static int tipc_nl_service_list(struct net *net, struct tipc_nl_msg *msg,
+ u32 *last_type, u32 *last_lower, u32 *last_key)
{
- struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct hlist_head *seq_head;
- struct name_seq *seq = NULL;
+ struct tipc_net *tn = tipc_net(net);
+ struct tipc_service *service = NULL;
+ struct hlist_head *head;
int err;
int i;
i = 0;
for (; i < TIPC_NAMETBL_SIZE; i++) {
- seq_head = &tn->nametbl->seq_hlist[i];
+ head = &tn->nametbl->services[i];
if (*last_type) {
- seq = nametbl_find_seq(net, *last_type);
- if (!seq)
+ service = tipc_service_find(net, *last_type);
+ if (!service)
return -EPIPE;
} else {
- hlist_for_each_entry_rcu(seq, seq_head, ns_list)
+ hlist_for_each_entry_rcu(service, head, service_list)
break;
- if (!seq)
+ if (!service)
continue;
}
- hlist_for_each_entry_from_rcu(seq, ns_list) {
- spin_lock_bh(&seq->lock);
- err = __tipc_nl_subseq_list(msg, seq, last_lower,
- last_publ);
+ hlist_for_each_entry_from_rcu(service, service_list) {
+ spin_lock_bh(&service->lock);
+ err = __tipc_nl_service_range_list(msg, service,
+ last_lower,
+ last_key);
if (err) {
- *last_type = seq->type;
- spin_unlock_bh(&seq->lock);
+ *last_type = service->type;
+ spin_unlock_bh(&service->lock);
return err;
}
- spin_unlock_bh(&seq->lock);
+ spin_unlock_bh(&service->lock);
}
*last_type = 0;
}
int tipc_nl_name_table_dump(struct sk_buff *skb, struct netlink_callback *cb)
{
- int err;
- int done = cb->args[3];
+ struct net *net = sock_net(skb->sk);
u32 last_type = cb->args[0];
u32 last_lower = cb->args[1];
- u32 last_publ = cb->args[2];
- struct net *net = sock_net(skb->sk);
+ u32 last_key = cb->args[2];
+ int done = cb->args[3];
struct tipc_nl_msg msg;
+ int err;
if (done)
return 0;
msg.seq = cb->nlh->nlmsg_seq;
rcu_read_lock();
- err = tipc_nl_seq_list(net, &msg, &last_type, &last_lower, &last_publ);
+ err = tipc_nl_service_list(net, &msg, &last_type,
+ &last_lower, &last_key);
if (!err) {
done = 1;
} else if (err != -EMSGSIZE) {
cb->args[0] = last_type;
cb->args[1] = last_lower;
- cb->args[2] = last_publ;
+ cb->args[2] = last_key;
cb->args[3] = done;
return skb->len;
projects / linux-2.6-microblaze.git / blobdiff