Release 4.11 net/tipc/name_table.c
/*
* net/tipc/name_table.c: TIPC name table code
*
* Copyright (c) 2000-2006, 2014-2015, Ericsson AB
* Copyright (c) 2004-2008, 2010-2014, Wind River Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <net/sock.h>
#include "core.h"
#include "netlink.h"
#include "name_table.h"
#include "name_distr.h"
#include "subscr.h"
#include "bcast.h"
#include "addr.h"
#include "node.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 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 {
u32 lower;
u32 upper;
struct name_info *info;
};
/**
* 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
* @rcu: RCU callback head used for deferred freeing
*/
struct name_seq {
u32 type;
struct sub_seq *sseqs;
u32 alloc;
u32 first_free;
struct hlist_node ns_list;
struct list_head subscriptions;
spinlock_t lock;
struct rcu_head rcu;
};
static int hash(int x)
{
return x & (TIPC_NAMETBL_SIZE - 1);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 17 | 94.44% | 1 | 50.00% |
Ying Xue | 1 | 5.56% | 1 | 50.00% |
Total | 18 | 100.00% | 2 | 100.00% |
/**
* 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)
{
struct publication *publ = kzalloc(sizeof(*publ), GFP_ATOMIC);
if (publ == NULL) {
pr_warn("Publication creation failure, no memory\n");
return NULL;
}
publ->type = type;
publ->lower = lower;
publ->upper = upper;
publ->scope = scope;
publ->node = node;
publ->ref = port_ref;
publ->key = key;
INIT_LIST_HEAD(&publ->pport_list);
return publ;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 110 | 96.49% | 1 | 20.00% |
Sam Ravnborg | 1 | 0.88% | 1 | 20.00% |
Erik Hugne | 1 | 0.88% | 1 | 20.00% |
Allan Stephens | 1 | 0.88% | 1 | 20.00% |
Panagiotis Issaris | 1 | 0.88% | 1 | 20.00% |
Total | 114 | 100.00% | 5 | 100.00% |
/**
* 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);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 16 | 64.00% | 2 | 40.00% |
Panagiotis Issaris | 7 | 28.00% | 1 | 20.00% |
Adrian Bunk | 1 | 4.00% | 1 | 20.00% |
Wang Weidong | 1 | 4.00% | 1 | 20.00% |
Total | 25 | 100.00% | 5 | 100.00% |
/**
* tipc_nameseq_create - create a name sequence structure for the specified 'type'
*
* Allocates a single sub-sequence structure and sets it to all 0's.
*/
static struct name_seq *tipc_nameseq_create(u32 type, struct hlist_head *seq_head)
{
struct name_seq *nseq = kzalloc(sizeof(*nseq), GFP_ATOMIC);
struct sub_seq *sseq = tipc_subseq_alloc(1);
if (!nseq || !sseq) {
pr_warn("Name sequence creation failed, no memory\n");
kfree(nseq);
kfree(sseq);
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;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 115 | 92.00% | 2 | 22.22% |
Ingo Molnar | 4 | 3.20% | 1 | 11.11% |
Adrian Bunk | 1 | 0.80% | 1 | 11.11% |
Panagiotis Issaris | 1 | 0.80% | 1 | 11.11% |
Allan Stephens | 1 | 0.80% | 1 | 11.11% |
Erik Hugne | 1 | 0.80% | 1 | 11.11% |
Sam Ravnborg | 1 | 0.80% | 1 | 11.11% |
Ying Xue | 1 | 0.80% | 1 | 11.11% |
Total | 125 | 100.00% | 9 | 100.00% |
/**
* nameseq_find_subseq - find sub-sequence (if any) matching a name instance
*
* Very time-critical, so binary searches through sub-sequence array.
*/
static struct sub_seq *nameseq_find_subseq(struct name_seq *nseq,
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;
else
return &sseqs[mid];
}
return NULL;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 105 | 99.06% | 1 | 50.00% |
Sam Ravnborg | 1 | 0.94% | 1 | 50.00% |
Total | 106 | 100.00% | 2 | 100.00% |
/**
* 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)
{
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;
else
return mid;
}
return low;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 100 | 100.00% | 1 | 100.00% |
Total | 100 | 100.00% | 1 | 100.00% |
/**
* tipc_nameseq_insert_publ
*/
static struct publication *tipc_nameseq_insert_publ(struct net *net,
struct name_seq *nseq,
u32 type, u32 lower,
u32 upper, u32 scope,
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;
}
/* Ensure there is space for new sub-sequence */
if (nseq->first_free == nseq->alloc) {
struct sub_seq *sseqs = tipc_subseq_alloc(nseq->alloc * 2);
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;
}
info = kzalloc(sizeof(*info), GFP_ATOMIC);
if (!info) {
pr_warn("Cannot publish {%u,%u,%u}, no memory\n",
type, lower, upper);
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++;
}
/* 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, created_subseq);
}
return publ;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 381 | 65.24% | 2 | 13.33% |
Allan Stephens | 183 | 31.34% | 6 | 40.00% |
Ying Xue | 10 | 1.71% | 2 | 13.33% |
Paul Gortmaker | 4 | 0.68% | 2 | 13.33% |
Sam Ravnborg | 3 | 0.51% | 1 | 6.67% |
Erik Hugne | 2 | 0.34% | 1 | 6.67% |
Adrian Bunk | 1 | 0.17% | 1 | 6.67% |
Total | 584 | 100.00% | 15 | 100.00% |
/**
* 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.
*/
static struct publication *tipc_nameseq_remove_publ(struct net *net,
struct name_seq *nseq,
u32 inst, u32 node,
u32 ref, 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;
info = sseq->info;
/* 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;
}
return NULL;
found:
/* Remove publication from zone scope list */
list_del(&publ->zone_list);
info->zone_list_size--;
/* Remove publication from cluster scope list, if present */
if (in_own_cluster(net, node)) {
list_del(&publ->cluster_list);
info->cluster_list_size--;
}
/* Remove publication from node scope list, if present */
if (in_own_node(net, node)) {
list_del(&publ->node_list);
info->node_list_size--;
}
/* 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;
}
/* 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, removed_subseq);
}
return publ;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 203 | 67.44% | 2 | 16.67% |
Allan Stephens | 85 | 28.24% | 5 | 41.67% |
Ying Xue | 10 | 3.32% | 2 | 16.67% |
Paul Gortmaker | 1 | 0.33% | 1 | 8.33% |
Sam Ravnborg | 1 | 0.33% | 1 | 8.33% |
Adrian Bunk | 1 | 0.33% | 1 | 8.33% |
Total | 301 | 100.00% | 12 | 100.00% |
/**
* tipc_nameseq_subscribe - attach a subscription, and issue
* the prescribed number of events if there is any sub-
* sequence overlapping with the requested sequence
*/
static void tipc_nameseq_subscribe(struct name_seq *nseq,
struct tipc_subscription *s)
{
struct sub_seq *sseq = nseq->sseqs;
struct tipc_name_seq ns;
tipc_subscrp_convert_seq(&s->evt.s.seq, s->swap, &ns);
list_add(&s->nameseq_list, &nseq->subscriptions);
if (!sseq)
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(s, sseq->lower,
sseq->upper,
TIPC_PUBLISHED,
crs->ref, crs->node,
must_report);
must_report = 0;
}
}
sseq++;
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 117 | 72.22% | 2 | 28.57% |
Parthasarathy Bhuvaragan | 25 | 15.43% | 1 | 14.29% |
Allan Stephens | 16 | 9.88% | 1 | 14.29% |
Ying Xue | 2 | 1.23% | 1 | 14.29% |
Paul Gortmaker | 1 | 0.62% | 1 | 14.29% |
Florian Westphal | 1 | 0.62% | 1 | 14.29% |
Total | 162 | 100.00% | 7 | 100.00% |
static struct name_seq *nametbl_find_seq(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;
}
return NULL;
}Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 53 | 68.83% | 1 | 20.00% |
Ying Xue | 23 | 29.87% | 3 | 60.00% |
Sam Ravnborg | 1 | 1.30% | 1 | 20.00% |
Total | 77 | 100.00% | 5 | 100.00% |
;
struct publication *tipc_nametbl_insert_publ(struct net *net, u32 type,
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",
type, lower, upper, scope);
return NULL;
}
if (!seq)
seq = tipc_nameseq_create(type, &tn->nametbl->seq_hlist[index]);
if (!seq)
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;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 99 | 55.00% | 2 | 22.22% |
Ying Xue | 61 | 33.89% | 4 | 44.44% |
Allan Stephens | 17 | 9.44% | 1 | 11.11% |
Sam Ravnborg | 2 | 1.11% | 1 | 11.11% |
Erik Hugne | 1 | 0.56% | 1 | 11.11% |
Total | 180 | 100.00% | 9 | 100.00% |
struct publication *tipc_nametbl_remove_publ(struct net *net, u32 type,
u32 lower, u32 node, u32 ref,
u32 key)
{
struct publication *publ;
struct name_seq *seq = nametbl_find_seq(net, type);
if (!seq)
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_unlock_bh(&seq->lock);
return publ;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Ying Xue | 71 | 51.45% | 4 | 57.14% |
Per Liden | 66 | 47.83% | 2 | 28.57% |
Sam Ravnborg | 1 | 0.72% | 1 | 14.29% |
Total | 138 | 100.00% | 7 | 100.00% |
/**
* tipc_nametbl_translate - perform name translation
*
* On entry, 'destnode' 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
*/
u32 tipc_nametbl_translate(struct net *net, u32 type, u32 instance,
u32 *destnode)
{
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;
u32 node = 0;
if (!tipc_in_scope(*destnode, tn->own_addr))
return 0;
rcu_read_lock();
seq = nametbl_find_seq(net, type);
if (unlikely(!seq))
goto not_found;
spin_lock_bh(&seq->lock);
sseq = nameseq_find_subseq(seq, instance);
if (unlikely(!sseq))
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))
goto no_match;
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);
}
ref = publ->ref;
node = publ->node;
no_match:
spin_unlock_bh(&seq->lock);
not_found:
rcu_read_unlock();
*destnode = node;
return ref;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Allan Stephens | 200 | 45.98% | 6 | 46.15% |
Per Liden | 193 | 44.37% | 2 | 15.38% |
Ying Xue | 40 | 9.20% | 4 | 30.77% |
Paul Gortmaker | 2 | 0.46% | 1 | 7.69% |
Total | 435 | 100.00% | 13 | 100.00% |
/**
* tipc_nametbl_mc_translate - find multicast destinations
*
* Creates list of all local ports that overlap the given multicast address;
* also determines if any off-node ports overlap.
*
* Note: Publications with a scope narrower than 'limit' are ignored.
* (i.e. local node-scope publications mustn't receive messages arriving
* from another node, even if the multcast link brought it here)
*
* Returns non-zero if any off-node ports overlap
*/
int tipc_nametbl_mc_translate(struct net *net, u32 type, u32 lower, u32 upper,
u32 limit, struct list_head *dports)
{
struct name_seq *seq;
struct sub_seq *sseq;
struct sub_seq *sseq_stop;
struct name_info *info;
int res = 0;
rcu_read_lock();
seq = nametbl_find_seq(net, type);
if (!seq)
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++) {
struct publication *publ;
if (sseq->lower > upper)
break;
info = sseq->info;
list_for_each_entry(publ, &info->node_list, node_list) {
if (publ->scope <= limit)
u32_push(dports, publ->ref);
}
if (info->cluster_list_size != info->node_list_size)
res = 1;
}
spin_unlock_bh(&seq->lock);
exit:
rcu_read_unlock();
return res;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 144 | 75.00% | 2 | 22.22% |
Allan Stephens | 35 | 18.23% | 4 | 44.44% |
Ying Xue | 11 | 5.73% | 2 | 22.22% |
Jon Paul Maloy | 2 | 1.04% | 1 | 11.11% |
Total | 192 | 100.00% | 9 | 100.00% |
/* 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
*/
void tipc_nametbl_lookup_dst_nodes(struct net *net, u32 type, u32 lower,
u32 upper, u32 domain,
struct tipc_nlist *nodes)
{
struct sub_seq *sseq, *stop;
struct publication *publ;
struct name_info *info;
struct name_seq *seq;
rcu_read_lock();
seq = nametbl_find_seq(net, type);
if (!seq)
goto exit;
spin_lock_bh(&seq->lock);
sseq = seq->sseqs + nameseq_locate_subseq(seq, lower);
stop = seq->sseqs + seq->first_free;
for (; sseq->lower <= upper && sseq != stop; sseq++) {
info = sseq->info;
list_for_each_entry(publ, &info->zone_list, zone_list) {
if (tipc_in_scope(domain, publ->node))
tipc_nlist_add(nodes, publ->node);
}
}
spin_unlock_bh(&seq->lock);
exit:
rcu_read_unlock();
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jon Paul Maloy | 168 | 100.00% | 1 | 100.00% |
Total | 168 | 100.00% | 1 | 100.00% |
/*
* tipc_nametbl_publish - add name publication to network name tables
*/
struct publication *tipc_nametbl_publish(struct net *net, u32 type, u32 lower,
u32 upper, u32 scope, u32 port_ref,
u32 key)
{
struct publication *publ;
struct sk_buff *buf = NULL;
struct tipc_net *tn = net_generic(net, tipc_net_id);
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;
}
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);
}
spin_unlock_bh(&tn->nametbl_lock);
if (buf)
tipc_node_broadcast(net, buf);
return publ;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Per Liden | 78 | 46.43% | 2 | 12.50% |
Ying Xue | 76 | 45.24% | 8 | 50.00% |
Allan Stephens | 9 | 5.36% | 3 | 18.75% |
Erik Hugne | 4 | 2.38% | 2 | 12.50% |
Jon Paul Maloy | 1 | 0.60% | 1 | 6.25% |
Total | 168 | 100.00% | 16 | 100.00% |
/**
* tipc_nametbl_withdraw - withdraw name publication from network name tables
*/
int tipc_nametbl_withdraw(struct net *net, u32 type, u32 lower, u32 ref,
u32 key)
{
struct publication *publ;
struct sk_buff *skb = NULL;
struct tipc_net *tn = net_generic(net, tipc_net_id);
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);