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-rw-r--r--net/tipc/bcast.c126
-rw-r--r--net/tipc/bcast.h1
-rw-r--r--net/tipc/bearer.c140
-rw-r--r--net/tipc/bearer.h8
-rw-r--r--net/tipc/core.h5
-rw-r--r--net/tipc/discover.c38
-rw-r--r--net/tipc/link.c626
-rw-r--r--net/tipc/link.h175
-rw-r--r--net/tipc/name_distr.c68
-rw-r--r--net/tipc/name_distr.h1
-rw-r--r--net/tipc/name_table.c5
-rw-r--r--net/tipc/netlink.c8
-rw-r--r--net/tipc/netlink_compat.c8
-rw-r--r--net/tipc/node.c875
-rw-r--r--net/tipc/node.h127
-rw-r--r--net/tipc/socket.c4
-rw-r--r--net/tipc/udp_media.c17
17 files changed, 1151 insertions, 1081 deletions
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index 9dc239dfe192..e401108360a2 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -332,131 +332,15 @@ void tipc_bcast_remove_peer(struct net *net, struct tipc_link *rcv_l)
tipc_sk_rcv(net, inputq);
}
-static int __tipc_nl_add_bc_link_stat(struct sk_buff *skb,
- struct tipc_stats *stats)
-{
- int i;
- struct nlattr *nest;
-
- struct nla_map {
- __u32 key;
- __u32 val;
- };
-
- struct nla_map map[] = {
- {TIPC_NLA_STATS_RX_INFO, stats->recv_info},
- {TIPC_NLA_STATS_RX_FRAGMENTS, stats->recv_fragments},
- {TIPC_NLA_STATS_RX_FRAGMENTED, stats->recv_fragmented},
- {TIPC_NLA_STATS_RX_BUNDLES, stats->recv_bundles},
- {TIPC_NLA_STATS_RX_BUNDLED, stats->recv_bundled},
- {TIPC_NLA_STATS_TX_INFO, stats->sent_info},
- {TIPC_NLA_STATS_TX_FRAGMENTS, stats->sent_fragments},
- {TIPC_NLA_STATS_TX_FRAGMENTED, stats->sent_fragmented},
- {TIPC_NLA_STATS_TX_BUNDLES, stats->sent_bundles},
- {TIPC_NLA_STATS_TX_BUNDLED, stats->sent_bundled},
- {TIPC_NLA_STATS_RX_NACKS, stats->recv_nacks},
- {TIPC_NLA_STATS_RX_DEFERRED, stats->deferred_recv},
- {TIPC_NLA_STATS_TX_NACKS, stats->sent_nacks},
- {TIPC_NLA_STATS_TX_ACKS, stats->sent_acks},
- {TIPC_NLA_STATS_RETRANSMITTED, stats->retransmitted},
- {TIPC_NLA_STATS_DUPLICATES, stats->duplicates},
- {TIPC_NLA_STATS_LINK_CONGS, stats->link_congs},
- {TIPC_NLA_STATS_MAX_QUEUE, stats->max_queue_sz},
- {TIPC_NLA_STATS_AVG_QUEUE, stats->queue_sz_counts ?
- (stats->accu_queue_sz / stats->queue_sz_counts) : 0}
- };
-
- nest = nla_nest_start(skb, TIPC_NLA_LINK_STATS);
- if (!nest)
- return -EMSGSIZE;
-
- for (i = 0; i < ARRAY_SIZE(map); i++)
- if (nla_put_u32(skb, map[i].key, map[i].val))
- goto msg_full;
-
- nla_nest_end(skb, nest);
-
- return 0;
-msg_full:
- nla_nest_cancel(skb, nest);
-
- return -EMSGSIZE;
-}
-
-int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg)
-{
- int err;
- void *hdr;
- struct nlattr *attrs;
- struct nlattr *prop;
- struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct tipc_link *bcl = tn->bcl;
-
- if (!bcl)
- return 0;
-
- tipc_bcast_lock(net);
-
- hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family,
- NLM_F_MULTI, TIPC_NL_LINK_GET);
- if (!hdr)
- return -EMSGSIZE;
-
- attrs = nla_nest_start(msg->skb, TIPC_NLA_LINK);
- if (!attrs)
- goto msg_full;
-
- /* The broadcast link is always up */
- if (nla_put_flag(msg->skb, TIPC_NLA_LINK_UP))
- goto attr_msg_full;
-
- if (nla_put_flag(msg->skb, TIPC_NLA_LINK_BROADCAST))
- goto attr_msg_full;
- if (nla_put_string(msg->skb, TIPC_NLA_LINK_NAME, bcl->name))
- goto attr_msg_full;
- if (nla_put_u32(msg->skb, TIPC_NLA_LINK_RX, bcl->rcv_nxt))
- goto attr_msg_full;
- if (nla_put_u32(msg->skb, TIPC_NLA_LINK_TX, bcl->snd_nxt))
- goto attr_msg_full;
-
- prop = nla_nest_start(msg->skb, TIPC_NLA_LINK_PROP);
- if (!prop)
- goto attr_msg_full;
- if (nla_put_u32(msg->skb, TIPC_NLA_PROP_WIN, bcl->window))
- goto prop_msg_full;
- nla_nest_end(msg->skb, prop);
-
- err = __tipc_nl_add_bc_link_stat(msg->skb, &bcl->stats);
- if (err)
- goto attr_msg_full;
-
- tipc_bcast_unlock(net);
- nla_nest_end(msg->skb, attrs);
- genlmsg_end(msg->skb, hdr);
-
- return 0;
-
-prop_msg_full:
- nla_nest_cancel(msg->skb, prop);
-attr_msg_full:
- nla_nest_cancel(msg->skb, attrs);
-msg_full:
- tipc_bcast_unlock(net);
- genlmsg_cancel(msg->skb, hdr);
-
- return -EMSGSIZE;
-}
-
int tipc_bclink_reset_stats(struct net *net)
{
- struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct tipc_link *bcl = tn->bcl;
+ struct tipc_link *l = tipc_bc_sndlink(net);
- if (!bcl)
+ if (!l)
return -ENOPROTOOPT;
tipc_bcast_lock(net);
- memset(&bcl->stats, 0, sizeof(bcl->stats));
+ tipc_link_reset_stats(l);
tipc_bcast_unlock(net);
return 0;
}
@@ -530,9 +414,7 @@ enomem:
void tipc_bcast_reinit(struct net *net)
{
- struct tipc_bc_base *b = tipc_bc_base(net);
-
- msg_set_prevnode(b->link->pmsg, tipc_own_addr(net));
+ tipc_link_reinit(tipc_bc_sndlink(net), tipc_own_addr(net));
}
void tipc_bcast_stop(struct net *net)
diff --git a/net/tipc/bcast.h b/net/tipc/bcast.h
index 2855b9356a15..1944c6c00bb9 100644
--- a/net/tipc/bcast.h
+++ b/net/tipc/bcast.h
@@ -43,6 +43,7 @@ struct tipc_node;
struct tipc_msg;
struct tipc_nl_msg;
struct tipc_node_map;
+extern const char tipc_bclink_name[];
int tipc_bcast_init(struct net *net);
void tipc_bcast_reinit(struct net *net);
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 648f2a67f314..802ffad3200d 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -71,7 +71,7 @@ static const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = {
[TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED }
};
-static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr);
+static void bearer_disable(struct net *net, struct tipc_bearer *b);
/**
* tipc_media_find - locates specified media object by name
@@ -107,13 +107,13 @@ static struct tipc_media *media_find_id(u8 type)
void tipc_media_addr_printf(char *buf, int len, struct tipc_media_addr *a)
{
char addr_str[MAX_ADDR_STR];
- struct tipc_media *m_ptr;
+ struct tipc_media *m;
int ret;
- m_ptr = media_find_id(a->media_id);
+ m = media_find_id(a->media_id);
- if (m_ptr && !m_ptr->addr2str(a, addr_str, sizeof(addr_str)))
- ret = scnprintf(buf, len, "%s(%s)", m_ptr->name, addr_str);
+ if (m && !m->addr2str(a, addr_str, sizeof(addr_str)))
+ ret = scnprintf(buf, len, "%s(%s)", m->name, addr_str);
else {
u32 i;
@@ -175,13 +175,13 @@ static int bearer_name_validate(const char *name,
struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct tipc_bearer *b_ptr;
+ struct tipc_bearer *b;
u32 i;
for (i = 0; i < MAX_BEARERS; i++) {
- b_ptr = rtnl_dereference(tn->bearer_list[i]);
- if (b_ptr && (!strcmp(b_ptr->name, name)))
- return b_ptr;
+ b = rtnl_dereference(tn->bearer_list[i]);
+ if (b && (!strcmp(b->name, name)))
+ return b;
}
return NULL;
}
@@ -189,24 +189,24 @@ struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name)
void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct tipc_bearer *b_ptr;
+ struct tipc_bearer *b;
rcu_read_lock();
- b_ptr = rcu_dereference_rtnl(tn->bearer_list[bearer_id]);
- if (b_ptr)
- tipc_disc_add_dest(b_ptr->link_req);
+ b = rcu_dereference_rtnl(tn->bearer_list[bearer_id]);
+ if (b)
+ tipc_disc_add_dest(b->link_req);
rcu_read_unlock();
}
void tipc_bearer_remove_dest(struct net *net, u32 bearer_id, u32 dest)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct tipc_bearer *b_ptr;
+ struct tipc_bearer *b;
rcu_read_lock();
- b_ptr = rcu_dereference_rtnl(tn->bearer_list[bearer_id]);
- if (b_ptr)
- tipc_disc_remove_dest(b_ptr->link_req);
+ b = rcu_dereference_rtnl(tn->bearer_list[bearer_id]);
+ if (b)
+ tipc_disc_remove_dest(b->link_req);
rcu_read_unlock();
}
@@ -218,8 +218,8 @@ static int tipc_enable_bearer(struct net *net, const char *name,
struct nlattr *attr[])
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct tipc_bearer *b_ptr;
- struct tipc_media *m_ptr;
+ struct tipc_bearer *b;
+ struct tipc_media *m;
struct tipc_bearer_names b_names;
char addr_string[16];
u32 bearer_id;
@@ -255,31 +255,31 @@ static int tipc_enable_bearer(struct net *net, const char *name,
return -EINVAL;
}
- m_ptr = tipc_media_find(b_names.media_name);
- if (!m_ptr) {
+ m = tipc_media_find(b_names.media_name);
+ if (!m) {
pr_warn("Bearer <%s> rejected, media <%s> not registered\n",
name, b_names.media_name);
return -EINVAL;
}
if (priority == TIPC_MEDIA_LINK_PRI)
- priority = m_ptr->priority;
+ priority = m->priority;
restart:
bearer_id = MAX_BEARERS;
with_this_prio = 1;
for (i = MAX_BEARERS; i-- != 0; ) {
- b_ptr = rtnl_dereference(tn->bearer_list[i]);
- if (!b_ptr) {
+ b = rtnl_dereference(tn->bearer_list[i]);
+ if (!b) {
bearer_id = i;
continue;
}
- if (!strcmp(name, b_ptr->name)) {
+ if (!strcmp(name, b->name)) {
pr_warn("Bearer <%s> rejected, already enabled\n",
name);
return -EINVAL;
}
- if ((b_ptr->priority == priority) &&
+ if ((b->priority == priority) &&
(++with_this_prio > 2)) {
if (priority-- == 0) {
pr_warn("Bearer <%s> rejected, duplicate priority\n",
@@ -297,35 +297,35 @@ restart:
return -EINVAL;
}
- b_ptr = kzalloc(sizeof(*b_ptr), GFP_ATOMIC);
- if (!b_ptr)
+ b = kzalloc(sizeof(*b), GFP_ATOMIC);
+ if (!b)
return -ENOMEM;
- strcpy(b_ptr->name, name);
- b_ptr->media = m_ptr;
- res = m_ptr->enable_media(net, b_ptr, attr);
+ strcpy(b->name, name);
+ b->media = m;
+ res = m->enable_media(net, b, attr);
if (res) {
pr_warn("Bearer <%s> rejected, enable failure (%d)\n",
name, -res);
return -EINVAL;
}
- b_ptr->identity = bearer_id;
- b_ptr->tolerance = m_ptr->tolerance;
- b_ptr->window = m_ptr->window;
- b_ptr->domain = disc_domain;
- b_ptr->net_plane = bearer_id + 'A';
- b_ptr->priority = priority;
+ b->identity = bearer_id;
+ b->tolerance = m->tolerance;
+ b->window = m->window;
+ b->domain = disc_domain;
+ b->net_plane = bearer_id + 'A';
+ b->priority = priority;
- res = tipc_disc_create(net, b_ptr, &b_ptr->bcast_addr);
+ res = tipc_disc_create(net, b, &b->bcast_addr);
if (res) {
- bearer_disable(net, b_ptr);
+ bearer_disable(net, b);
pr_warn("Bearer <%s> rejected, discovery object creation failed\n",
name);
return -EINVAL;
}
- rcu_assign_pointer(tn->bearer_list[bearer_id], b_ptr);
+ rcu_assign_pointer(tn->bearer_list[bearer_id], b);
pr_info("Enabled bearer <%s>, discovery domain %s, priority %u\n",
name,
@@ -336,11 +336,11 @@ restart:
/**
* tipc_reset_bearer - Reset all links established over this bearer
*/
-static int tipc_reset_bearer(struct net *net, struct tipc_bearer *b_ptr)
+static int tipc_reset_bearer(struct net *net, struct tipc_bearer *b)
{
- pr_info("Resetting bearer <%s>\n", b_ptr->name);
- tipc_node_delete_links(net, b_ptr->identity);
- tipc_disc_reset(net, b_ptr);
+ pr_info("Resetting bearer <%s>\n", b->name);
+ tipc_node_delete_links(net, b->identity);
+ tipc_disc_reset(net, b);
return 0;
}
@@ -349,26 +349,26 @@ static int tipc_reset_bearer(struct net *net, struct tipc_bearer *b_ptr)
*
* Note: This routine assumes caller holds RTNL lock.
*/
-static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr)
+static void bearer_disable(struct net *net, struct tipc_bearer *b)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
u32 i;
- pr_info("Disabling bearer <%s>\n", b_ptr->name);
- b_ptr->media->disable_media(b_ptr);
+ pr_info("Disabling bearer <%s>\n", b->name);
+ b->media->disable_media(b);
- tipc_node_delete_links(net, b_ptr->identity);
- RCU_INIT_POINTER(b_ptr->media_ptr, NULL);
- if (b_ptr->link_req)
- tipc_disc_delete(b_ptr->link_req);
+ tipc_node_delete_links(net, b->identity);
+ RCU_INIT_POINTER(b->media_ptr, NULL);
+ if (b->link_req)
+ tipc_disc_delete(b->link_req);
for (i = 0; i < MAX_BEARERS; i++) {
- if (b_ptr == rtnl_dereference(tn->bearer_list[i])) {
+ if (b == rtnl_dereference(tn->bearer_list[i])) {
RCU_INIT_POINTER(tn->bearer_list[i], NULL);
break;
}
}
- kfree_rcu(b_ptr, rcu);
+ kfree_rcu(b, rcu);
}
int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b,
@@ -411,7 +411,7 @@ void tipc_disable_l2_media(struct tipc_bearer *b)
/**
* tipc_l2_send_msg - send a TIPC packet out over an L2 interface
* @buf: the packet to be sent
- * @b_ptr: the bearer through which the packet is to be sent
+ * @b: the bearer through which the packet is to be sent
* @dest: peer destination address
*/
int tipc_l2_send_msg(struct net *net, struct sk_buff *skb,
@@ -532,14 +532,14 @@ void tipc_bearer_bc_xmit(struct net *net, u32 bearer_id,
static int tipc_l2_rcv_msg(struct sk_buff *buf, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev)
{
- struct tipc_bearer *b_ptr;
+ struct tipc_bearer *b;
rcu_read_lock();
- b_ptr = rcu_dereference_rtnl(dev->tipc_ptr);
- if (likely(b_ptr)) {
+ b = rcu_dereference_rtnl(dev->tipc_ptr);
+ if (likely(b)) {
if (likely(buf->pkt_type <= PACKET_BROADCAST)) {
buf->next = NULL;
- tipc_rcv(dev_net(dev), buf, b_ptr);
+ tipc_rcv(dev_net(dev), buf, b);
rcu_read_unlock();
return NET_RX_SUCCESS;
}
@@ -564,13 +564,13 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt,
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct net *net = dev_net(dev);
- struct tipc_bearer *b_ptr;
+ struct tipc_bearer *b;
- b_ptr = rtnl_dereference(dev->tipc_ptr);
- if (!b_ptr)
+ b = rtnl_dereference(dev->tipc_ptr);
+ if (!b)
return NOTIFY_DONE;
- b_ptr->mtu = dev->mtu;
+ b->mtu = dev->mtu;
switch (evt) {
case NETDEV_CHANGE:
@@ -578,16 +578,16 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt,
break;
case NETDEV_GOING_DOWN:
case NETDEV_CHANGEMTU:
- tipc_reset_bearer(net, b_ptr);
+ tipc_reset_bearer(net, b);
break;
case NETDEV_CHANGEADDR:
- b_ptr->media->raw2addr(b_ptr, &b_ptr->addr,
+ b->media->raw2addr(b, &b->addr,
(char *)dev->dev_addr);
- tipc_reset_bearer(net, b_ptr);
+ tipc_reset_bearer(net, b);
break;
case NETDEV_UNREGISTER:
case NETDEV_CHANGENAME:
- bearer_disable(dev_net(dev), b_ptr);
+ bearer_disable(dev_net(dev), b);
break;
}
return NOTIFY_OK;
@@ -623,13 +623,13 @@ void tipc_bearer_cleanup(void)
void tipc_bearer_stop(struct net *net)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct tipc_bearer *b_ptr;
+ struct tipc_bearer *b;
u32 i;
for (i = 0; i < MAX_BEARERS; i++) {
- b_ptr = rtnl_dereference(tn->bearer_list[i]);
- if (b_ptr) {
- bearer_disable(net, b_ptr);
+ b = rtnl_dereference(tn->bearer_list[i]);
+ if (b) {
+ bearer_disable(net, b);
tn->bearer_list[i] = NULL;
}
}
diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
index 552185bc4773..e31820516774 100644
--- a/net/tipc/bearer.h
+++ b/net/tipc/bearer.h
@@ -103,11 +103,11 @@ struct tipc_bearer;
*/
struct tipc_media {
int (*send_msg)(struct net *net, struct sk_buff *buf,
- struct tipc_bearer *b_ptr,
+ struct tipc_bearer *b,
struct tipc_media_addr *dest);
- int (*enable_media)(struct net *net, struct tipc_bearer *b_ptr,
+ int (*enable_media)(struct net *net, struct tipc_bearer *b,
struct nlattr *attr[]);
- void (*disable_media)(struct tipc_bearer *b_ptr);
+ void (*disable_media)(struct tipc_bearer *b);
int (*addr2str)(struct tipc_media_addr *addr,
char *strbuf,
int bufsz);
@@ -176,7 +176,7 @@ struct tipc_bearer_names {
* TIPC routines available to supported media types
*/
-void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b_ptr);
+void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b);
/*
* Routines made available to TIPC by supported media types
diff --git a/net/tipc/core.h b/net/tipc/core.h
index 18e95a8020cd..5504d63503df 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -118,6 +118,11 @@ static inline int tipc_netid(struct net *net)
return tipc_net(net)->net_id;
}
+static inline struct list_head *tipc_nodes(struct net *net)
+{
+ return &tipc_net(net)->node_list;
+}
+
static inline u16 mod(u16 x)
{
return x & 0xffffu;
diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index afe8c47c4085..f1e738e80535 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -75,14 +75,14 @@ struct tipc_link_req {
* tipc_disc_init_msg - initialize a link setup message
* @net: the applicable net namespace
* @type: message type (request or response)
- * @b_ptr: ptr to bearer issuing message
+ * @b: ptr to bearer issuing message
*/
static void tipc_disc_init_msg(struct net *net, struct sk_buff *buf, u32 type,
- struct tipc_bearer *b_ptr)
+ struct tipc_bearer *b)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_msg *msg;
- u32 dest_domain = b_ptr->domain;
+ u32 dest_domain = b->domain;
msg = buf_msg(buf);
tipc_msg_init(tn->own_addr, msg, LINK_CONFIG, type,
@@ -92,16 +92,16 @@ static void tipc_disc_init_msg(struct net *net, struct sk_buff *buf, u32 type,
msg_set_node_capabilities(msg, TIPC_NODE_CAPABILITIES);
msg_set_dest_domain(msg, dest_domain);
msg_set_bc_netid(msg, tn->net_id);
- b_ptr->media->addr2msg(msg_media_addr(msg), &b_ptr->addr);
+ b->media->addr2msg(msg_media_addr(msg), &b->addr);
}
/**
* disc_dupl_alert - issue node address duplication alert
- * @b_ptr: pointer to bearer detecting duplication
+ * @b: pointer to bearer detecting duplication
* @node_addr: duplicated node address
* @media_addr: media address advertised by duplicated node
*/
-static void disc_dupl_alert(struct tipc_bearer *b_ptr, u32 node_addr,
+static void disc_dupl_alert(struct tipc_bearer *b, u32 node_addr,
struct tipc_media_addr *media_addr)
{
char node_addr_str[16];
@@ -111,7 +111,7 @@ static void disc_dupl_alert(struct tipc_bearer *b_ptr, u32 node_addr,
tipc_media_addr_printf(media_addr_str, sizeof(media_addr_str),
media_addr);
pr_warn("Duplicate %s using %s seen on <%s>\n", node_addr_str,
- media_addr_str, b_ptr->name);
+ media_addr_str, b->name);
}
/**
@@ -261,13 +261,13 @@ exit:
/**
* tipc_disc_create - create object to send periodic link setup requests
* @net: the applicable net namespace
- * @b_ptr: ptr to bearer issuing requests
+ * @b: ptr to bearer issuing requests
* @dest: destination address for request messages
* @dest_domain: network domain to which links can be established
*
* Returns 0 if successful, otherwise -errno.
*/
-int tipc_disc_create(struct net *net, struct tipc_bearer *b_ptr,
+int tipc_disc_create(struct net *net, struct tipc_bearer *b,
struct tipc_media_addr *dest)
{
struct tipc_link_req *req;
@@ -282,17 +282,17 @@ int tipc_disc_create(struct net *net, struct tipc_bearer *b_ptr,
return -ENOMEM;
}
- tipc_disc_init_msg(net, req->buf, DSC_REQ_MSG, b_ptr);
+ tipc_disc_init_msg(net, req->buf, DSC_REQ_MSG, b);
memcpy(&req->dest, dest, sizeof(*dest));
req->net = net;
- req->bearer_id = b_ptr->identity;
- req->domain = b_ptr->domain;
+ req->bearer_id = b->identity;
+ req->domain = b->domain;
req->num_nodes = 0;
req->timer_intv = TIPC_LINK_REQ_INIT;
spin_lock_init(&req->lock);
setup_timer(&req->timer, disc_timeout, (unsigned long)req);
mod_timer(&req->timer, jiffies + req->timer_intv);
- b_ptr->link_req = req;
+ b->link_req = req;
skb = skb_clone(req->buf, GFP_ATOMIC);
if (skb)
tipc_bearer_xmit_skb(net, req->bearer_id, skb, &req->dest);
@@ -313,19 +313,19 @@ void tipc_disc_delete(struct tipc_link_req *req)
/**
* tipc_disc_reset - reset object to send periodic link setup requests
* @net: the applicable net namespace
- * @b_ptr: ptr to bearer issuing requests
+ * @b: ptr to bearer issuing requests
* @dest_domain: network domain to which links can be established
*/
-void tipc_disc_reset(struct net *net, struct tipc_bearer *b_ptr)
+void tipc_disc_reset(struct net *net, struct tipc_bearer *b)
{
- struct tipc_link_req *req = b_ptr->link_req;
+ struct tipc_link_req *req = b->link_req;
struct sk_buff *skb;
spin_lock_bh(&req->lock);
- tipc_disc_init_msg(net, req->buf, DSC_REQ_MSG, b_ptr);
+ tipc_disc_init_msg(net, req->buf, DSC_REQ_MSG, b);
req->net = net;
- req->bearer_id = b_ptr->identity;
- req->domain = b_ptr->domain;
+ req->bearer_id = b->identity;
+ req->domain = b->domain;
req->num_nodes = 0;
req->timer_intv = TIPC_LINK_REQ_INIT;
mod_timer(&req->timer, jiffies + req->timer_intv);
diff --git a/net/tipc/link.c b/net/tipc/link.c
index 91aea071ab27..0c2944fb9ae0 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -45,28 +45,156 @@
#include <linux/pkt_sched.h>
+struct tipc_stats {
+ u32 sent_info; /* used in counting # sent packets */
+ u32 recv_info; /* used in counting # recv'd packets */
+ u32 sent_states;
+ u32 recv_states;
+ u32 sent_probes;
+ u32 recv_probes;
+ u32 sent_nacks;
+ u32 recv_nacks;
+ u32 sent_acks;
+ u32 sent_bundled;
+ u32 sent_bundles;
+ u32 recv_bundled;
+ u32 recv_bundles;
+ u32 retransmitted;
+ u32 sent_fragmented;
+ u32 sent_fragments;
+ u32 recv_fragmented;
+ u32 recv_fragments;
+ u32 link_congs; /* # port sends blocked by congestion */
+ u32 deferred_recv;
+ u32 duplicates;
+ u32 max_queue_sz; /* send queue size high water mark */
+ u32 accu_queue_sz; /* used for send queue size profiling */
+ u32 queue_sz_counts; /* used for send queue size profiling */
+ u32 msg_length_counts; /* used for message length profiling */
+ u32 msg_lengths_total; /* used for message length profiling */
+ u32 msg_length_profile[7]; /* used for msg. length profiling */
+};
+
+/**
+ * struct tipc_link - TIPC link data structure
+ * @addr: network address of link's peer node
+ * @name: link name character string
+ * @media_addr: media address to use when sending messages over link
+ * @timer: link timer
+ * @net: pointer to namespace struct
+ * @refcnt: reference counter for permanent references (owner node & timer)
+ * @peer_session: link session # being used by peer end of link
+ * @peer_bearer_id: bearer id used by link's peer endpoint
+ * @bearer_id: local bearer id used by link
+ * @tolerance: minimum link continuity loss needed to reset link [in ms]
+ * @keepalive_intv: link keepalive timer interval
+ * @abort_limit: # of unacknowledged continuity probes needed to reset link
+ * @state: current state of link FSM
+ * @peer_caps: bitmap describing capabilities of peer node
+ * @silent_intv_cnt: # of timer intervals without any reception from peer
+ * @proto_msg: template for control messages generated by link
+ * @pmsg: convenience pointer to "proto_msg" field
+ * @priority: current link priority
+ * @net_plane: current link network plane ('A' through 'H')
+ * @backlog_limit: backlog queue congestion thresholds (indexed by importance)
+ * @exp_msg_count: # of tunnelled messages expected during link changeover
+ * @reset_rcv_checkpt: seq # of last acknowledged message at time of link reset
+ * @mtu: current maximum packet size for this link
+ * @advertised_mtu: advertised own mtu when link is being established
+ * @transmitq: queue for sent, non-acked messages
+ * @backlogq: queue for messages waiting to be sent
+ * @snt_nxt: next sequence number to use for outbound messages
+ * @last_retransmitted: sequence number of most recently retransmitted message
+ * @stale_count: # of identical retransmit requests made by peer
+ * @ackers: # of peers that needs to ack each packet before it can be released
+ * @acked: # last packet acked by a certain peer. Used for broadcast.
+ * @rcv_nxt: next sequence number to expect for inbound messages
+ * @deferred_queue: deferred queue saved OOS b'cast message received from node
+ * @unacked_window: # of inbound messages rx'd without ack'ing back to peer
+ * @inputq: buffer queue for messages to be delivered upwards
+ * @namedq: buffer queue for name table messages to be delivered upwards
+ * @next_out: ptr to first unsent outbound message in queue
+ * @wakeupq: linked list of wakeup msgs waiting for link congestion to abate
+ * @long_msg_seq_no: next identifier to use for outbound fragmented messages
+ * @reasm_buf: head of partially reassembled inbound message fragments
+ * @bc_rcvr: marks that this is a broadcast receiver link
+ * @stats: collects statistics regarding link activity
+ */
+struct tipc_link {
+ u32 addr;
+ char name[TIPC_MAX_LINK_NAME];
+ struct tipc_media_addr *media_addr;
+ struct net *net;
+
+ /* Management and link supervision data */
+ u32 peer_session;
+ u32 peer_bearer_id;
+ u32 bearer_id;
+ u32 tolerance;
+ unsigned long keepalive_intv;
+ u32 abort_limit;
+ u32 state;
+ u16 peer_caps;
+ bool active;
+ u32 silent_intv_cnt;
+ struct {
+ unchar hdr[INT_H_SIZE];
+ unchar body[TIPC_MAX_IF_NAME];
+ } proto_msg;
+ struct tipc_msg *pmsg;
+ u32 priority;
+ char net_plane;
+
+ /* Failover/synch */
+ u16 drop_point;
+ struct sk_buff *failover_reasm_skb;
+
+ /* Max packet negotiation */
+ u16 mtu;
+ u16 advertised_mtu;
+
+ /* Sending */
+ struct sk_buff_head transmq;
+ struct sk_buff_head backlogq;
+ struct {
+ u16 len;
+ u16 limit;
+ } backlog[5];
+ u16 snd_nxt;
+ u16 last_retransm;
+ u16 window;
+ u32 stale_count;
+
+ /* Reception */
+ u16 rcv_nxt;
+ u32 rcv_unacked;
+ struct sk_buff_head deferdq;
+ struct sk_buff_head *inputq;
+ struct sk_buff_head *namedq;
+
+ /* Congestion handling */
+ struct sk_buff_head wakeupq;
+
+ /* Fragmentation/reassembly */
+ struct sk_buff *reasm_buf;
+
+ /* Broadcast */
+ u16 ackers;
+ u16 acked;
+ struct tipc_link *bc_rcvlink;
+ struct tipc_link *bc_sndlink;
+ int nack_state;
+ bool bc_peer_is_up;
+
+ /* Statistics */
+ struct tipc_stats stats;
+};
+
/*
* Error message prefixes
*/
static const char *link_co_err = "Link tunneling error, ";
static const char *link_rst_msg = "Resetting link ";
-static const char tipc_bclink_name[] = "broadcast-link";
-
-static const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = {
- [TIPC_NLA_LINK_UNSPEC] = { .type = NLA_UNSPEC },
- [TIPC_NLA_LINK_NAME] = {
- .type = NLA_STRING,
- .len = TIPC_MAX_LINK_NAME
- },
- [TIPC_NLA_LINK_MTU] = { .type = NLA_U32 },
- [TIPC_NLA_LINK_BROADCAST] = { .type = NLA_FLAG },
- [TIPC_NLA_LINK_UP] = { .type = NLA_FLAG },
- [TIPC_NLA_LINK_ACTIVE] = { .type = NLA_FLAG },
- [TIPC_NLA_LINK_PROP] = { .type = NLA_NESTED },
- [TIPC_NLA_LINK_STATS] = { .type = NLA_NESTED },
- [TIPC_NLA_LINK_RX] = { .type = NLA_U32 },
- [TIPC_NLA_LINK_TX] = { .type = NLA_U32 }
-};
/* Properties valid for media, bearar and link */
static const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = {
@@ -117,8 +245,7 @@ static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb,
static void tipc_link_build_proto_msg(struct tipc_link *l, int mtyp, bool probe,
u16 rcvgap, int tolerance, int priority,
struct sk_buff_head *xmitq);
-static void link_reset_statistics(struct tipc_link *l_ptr);
-static void link_print(struct tipc_link *l_ptr, const char *str);
+static void link_print(struct tipc_link *l, const char *str);
static void tipc_link_build_nack_msg(struct tipc_link *l,
struct sk_buff_head *xmitq);
static void tipc_link_build_bc_init_msg(struct tipc_link *l,
@@ -183,6 +310,36 @@ void tipc_link_set_active(struct tipc_link *l, bool active)
l->active = active;
}
+u32 tipc_link_id(struct tipc_link *l)
+{
+ return l->peer_bearer_id << 16 | l->bearer_id;
+}
+
+int tipc_link_window(struct tipc_link *l)
+{
+ return l->window;
+}
+
+int tipc_link_prio(struct tipc_link *l)
+{
+ return l->priority;
+}
+
+unsigned long tipc_link_tolerance(struct tipc_link *l)
+{
+ return l->tolerance;
+}
+
+struct sk_buff_head *tipc_link_inputq(struct tipc_link *l)
+{
+ return l->inputq;
+}
+
+char tipc_link_plane(struct tipc_link *l)
+{
+ return l->net_plane;
+}
+
void tipc_link_add_bc_peer(struct tipc_link *snd_l,
struct tipc_link *uc_l,
struct sk_buff_head *xmitq)
@@ -227,11 +384,31 @@ int tipc_link_mtu(struct tipc_link *l)
return l->mtu;
}
+u16 tipc_link_rcv_nxt(struct tipc_link *l)
+{
+ return l->rcv_nxt;
+}
+
+u16 tipc_link_acked(struct tipc_link *l)
+{
+ return l->acked;
+}
+
+char *tipc_link_name(struct tipc_link *l)
+{
+ return l->name;
+}
+
static u32 link_own_addr(struct tipc_link *l)
{
return msg_prevnode(l->pmsg);
}
+void tipc_link_reinit(struct tipc_link *l, u32 addr)
+{
+ msg_set_prevnode(l->pmsg, addr);
+}
+
/**
* tipc_link_create - create a new link
* @n: pointer to associated node
@@ -694,7 +871,7 @@ void tipc_link_reset(struct tipc_link *l)
l->stats.recv_info = 0;
l->stale_count = 0;
l->bc_peer_is_up = false;
- link_reset_statistics(l);
+ tipc_link_reset_stats(l);
}
/**
@@ -1087,8 +1264,9 @@ drop:
/*
* Send protocol message to the other endpoint.
*/
-void tipc_link_proto_xmit(struct tipc_link *l, u32 msg_typ, int probe_msg,
- u32 gap, u32 tolerance, u32 priority)
+static void tipc_link_proto_xmit(struct tipc_link *l, u32 msg_typ,
+ int probe_msg, u32 gap, u32 tolerance,
+ u32 priority)
{
struct sk_buff *skb = NULL;
struct sk_buff_head xmitq;
@@ -1262,6 +1440,8 @@ static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb,
/* fall thru' */
case ACTIVATE_MSG:
+ skb_linearize(skb);
+ hdr = buf_msg(skb);
/* Complete own link name with peer's interface name */
if_name = strrchr(l->name, ':') + 1;
@@ -1527,53 +1707,17 @@ void tipc_link_set_queue_limits(struct tipc_link *l, u32 win)
l->backlog[TIPC_SYSTEM_IMPORTANCE].limit = max_bulk;
}
-/* tipc_link_find_owner - locate owner node of link by link's name
- * @net: the applicable net namespace
- * @name: pointer to link name string
- * @bearer_id: pointer to index in 'node->links' array where the link was found.
- *
- * Returns pointer to node owning the link, or 0 if no matching link is found.
- */
-static struct tipc_node *tipc_link_find_owner(struct net *net,
- const char *link_name,
- unsigned int *bearer_id)
-{
- struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct tipc_link *l_ptr;
- struct tipc_node *n_ptr;
- struct tipc_node *found_node = NULL;
- int i;
-
- *bearer_id = 0;
- rcu_read_lock();
- list_for_each_entry_rcu(n_ptr, &tn->node_list, list) {
- tipc_node_lock(n_ptr);
- for (i = 0; i < MAX_BEARERS; i++) {
- l_ptr = n_ptr->links[i].link;
- if (l_ptr && !strcmp(l_ptr->name, link_name)) {
- *bearer_id = i;
- found_node = n_ptr;
- break;
- }
- }
- tipc_node_unlock(n_ptr);
- if (found_node)
- break;
- }
- rcu_read_unlock();
-
- return found_node;
-}
-
/**
- * link_reset_statistics - reset link statistics
- * @l_ptr: pointer to link
+ * link_reset_stats - reset link statistics
+ * @l: pointer to link
*/
-static void link_reset_statistics(struct tipc_link *l_ptr)
+void tipc_link_reset_stats(struct tipc_link *l)
{
- memset(&l_ptr->stats, 0, sizeof(l_ptr->stats));
- l_ptr->stats.sent_info = l_ptr->snd_nxt;
- l_ptr->stats.recv_info = l_ptr->rcv_nxt;
+ memset(&l->stats, 0, sizeof(l->stats));
+ if (!link_is_bc_sndlink(l)) {
+ l->stats.sent_info = l->snd_nxt;
+ l->stats.recv_info = l->rcv_nxt;
+ }
}
static void link_print(struct tipc_link *l, const char *str)
@@ -1626,84 +1770,6 @@ int tipc_nl_parse_link_prop(struct nlattr *prop, struct nlattr *props[])
return 0;
}
-int tipc_nl_link_set(struct sk_buff *skb, struct genl_info *info)
-{
- int err;
- int res = 0;
- int bearer_id;
- char *name;
- struct tipc_link *link;
- struct tipc_node *node;
- struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1];
- struct net *net = sock_net(skb->sk);
-
- if (!info->attrs[TIPC_NLA_LINK])
- return -EINVAL;
-
- err = nla_parse_nested(attrs, TIPC_NLA_LINK_MAX,
- info->attrs[TIPC_NLA_LINK],
- tipc_nl_link_policy);
- if (err)
- return err;
-
- if (!attrs[TIPC_NLA_LINK_NAME])
- return -EINVAL;
-
- name = nla_data(attrs[TIPC_NLA_LINK_NAME]);
-
- if (strcmp(name, tipc_bclink_name) == 0)
- return tipc_nl_bc_link_set(net, attrs);
-
- node = tipc_link_find_owner(net, name, &bearer_id);
- if (!node)
- return -EINVAL;
-
- tipc_node_lock(node);
-
- link = node->links[bearer_id].link;
- if (!link) {
- res = -EINVAL;
- goto out;
- }
-
- if (attrs[TIPC_NLA_LINK_PROP]) {
- struct nlattr *props[TIPC_NLA_PROP_MAX + 1];
-
- err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_LINK_PROP],
- props);
- if (err) {
- res = err;
- goto out;
- }
-
- if (props[TIPC_NLA_PROP_TOL]) {
- u32 tol;
-
- tol = nla_get_u32(props[TIPC_NLA_PROP_TOL]);
- link->tolerance = tol;
- tipc_link_proto_xmit(link, STATE_MSG, 0, 0, tol, 0);
- }
- if (props[TIPC_NLA_PROP_PRIO]) {
- u32 prio;
-
- prio = nla_get_u32(props[TIPC_NLA_PROP_PRIO]);
- link->priority = prio;
- tipc_link_proto_xmit(link, STATE_MSG, 0, 0, 0, prio);
- }
- if (props[TIPC_NLA_PROP_WIN]) {
- u32 win;
-
- win = nla_get_u32(props[TIPC_NLA_PROP_WIN]);
- tipc_link_set_queue_limits(link, win);
- }
- }
-
-out:
- tipc_node_unlock(node);
-
- return res;
-}
-
static int __tipc_nl_add_stats(struct sk_buff *skb, struct tipc_stats *s)
{
int i;
@@ -1770,8 +1836,8 @@ msg_full:
}
/* Caller should hold appropriate locks to protect the link */
-static int __tipc_nl_add_link(struct net *net, struct tipc_nl_msg *msg,
- struct tipc_link *link, int nlflags)
+int __tipc_nl_add_link(struct net *net, struct tipc_nl_msg *msg,
+ struct tipc_link *link, int nlflags)
{
int err;
void *hdr;
@@ -1840,198 +1906,134 @@ msg_full:
return -EMSGSIZE;
}
-/* Caller should hold node lock */
-static int __tipc_nl_add_node_links(struct net *net, struct tipc_nl_msg *msg,
- struct tipc_node *node, u32 *prev_link)
+static int __tipc_nl_add_bc_link_stat(struct sk_buff *skb,
+ struct tipc_stats *stats)
{
- u32 i;
- int err;
-
- for (i = *prev_link; i < MAX_BEARERS; i++) {
- *prev_link = i;
-
- if (!node->links[i].link)
- continue;
+ int i;
+ struct nlattr *nest;
- err = __tipc_nl_add_link(net, msg,
- node->links[i].link, NLM_F_MULTI);
- if (err)
- return err;
- }
- *prev_link = 0;
+ struct nla_map {
+ __u32 key;
+ __u32 val;
+ };
- return 0;
-}
+ struct nla_map map[] = {
+ {TIPC_NLA_STATS_RX_INFO, stats->recv_info},
+ {TIPC_NLA_STATS_RX_FRAGMENTS, stats->recv_fragments},
+ {TIPC_NLA_STATS_RX_FRAGMENTED, stats->recv_fragmented},
+ {TIPC_NLA_STATS_RX_BUNDLES, stats->recv_bundles},
+ {TIPC_NLA_STATS_RX_BUNDLED, stats->recv_bundled},
+ {TIPC_NLA_STATS_TX_INFO, stats->sent_info},
+ {TIPC_NLA_STATS_TX_FRAGMENTS, stats->sent_fragments},
+ {TIPC_NLA_STATS_TX_FRAGMENTED, stats->sent_fragmented},
+ {TIPC_NLA_STATS_TX_BUNDLES, stats->sent_bundles},
+ {TIPC_NLA_STATS_TX_BUNDLED, stats->sent_bundled},
+ {TIPC_NLA_STATS_RX_NACKS, stats->recv_nacks},
+ {TIPC_NLA_STATS_RX_DEFERRED, stats->deferred_recv},
+ {TIPC_NLA_STATS_TX_NACKS, stats->sent_nacks},
+ {TIPC_NLA_STATS_TX_ACKS, stats->sent_acks},
+ {TIPC_NLA_STATS_RETRANSMITTED, stats->retransmitted},
+ {TIPC_NLA_STATS_DUPLICATES, stats->duplicates},
+ {TIPC_NLA_STATS_LINK_CONGS, stats->link_congs},
+ {TIPC_NLA_STATS_MAX_QUEUE, stats->max_queue_sz},
+ {TIPC_NLA_STATS_AVG_QUEUE, stats->queue_sz_counts ?
+ (stats->accu_queue_sz / stats->queue_sz_counts) : 0}
+ };
-int tipc_nl_link_dump(struct sk_buff *skb, struct netlink_callback *cb)
-{
- struct net *net = sock_net(skb->sk);
- struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct tipc_node *node;
- struct tipc_nl_msg msg;
- u32 prev_node = cb->args[0];
- u32 prev_link = cb->args[1];
- int done = cb->args[2];
- int err;
+ nest = nla_nest_start(skb, TIPC_NLA_LINK_STATS);
+ if (!nest)
+ return -EMSGSIZE;
- if (done)
- return 0;
+ for (i = 0; i < ARRAY_SIZE(map); i++)
+ if (nla_put_u32(skb, map[i].key, map[i].val))
+ goto msg_full;
- msg.skb = skb;
- msg.portid = NETLINK_CB(cb->skb).portid;
- msg.seq = cb->nlh->nlmsg_seq;
-
- rcu_read_lock();
- if (prev_node) {
- node = tipc_node_find(net, prev_node);
- if (!node) {
- /* We never set seq or call nl_dump_check_consistent()
- * this means that setting prev_seq here will cause the
- * consistence check to fail in the netlink callback
- * handler. Resulting in the last NLMSG_DONE message
- * having the NLM_F_DUMP_INTR flag set.
- */
- cb->prev_seq = 1;
- goto out;
- }
- tipc_node_put(node);
-
- list_for_each_entry_continue_rcu(node, &tn->node_list,
- list) {
- tipc_node_lock(node);
- err = __tipc_nl_add_node_links(net, &msg, node,
- &prev_link);
- tipc_node_unlock(node);
- if (err)
- goto out;
-
- prev_node = node->addr;
- }
- } else {
- err = tipc_nl_add_bc_link(net, &msg);
- if (err)
- goto out;
-
- list_for_each_entry_rcu(node, &tn->node_list, list) {
- tipc_node_lock(node);
- err = __tipc_nl_add_node_links(net, &msg, node,
- &prev_link);
- tipc_node_unlock(node);
- if (err)
- goto out;
-
- prev_node = node->addr;
- }
- }
- done = 1;
-out:
- rcu_read_unlock();
+ nla_nest_end(skb, nest);
- cb->args[0] = prev_node;
- cb->args[1] = prev_link;
- cb->args[2] = done;
+ return 0;
+msg_full:
+ nla_nest_cancel(skb, nest);
- return skb->len;
+ return -EMSGSIZE;
}
-int tipc_nl_link_get(struct sk_buff *skb, struct genl_info *info)
+int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg)
{
- struct net *net = genl_info_net(info);
- struct tipc_nl_msg msg;
- char *name;
int err;
+ void *hdr;
+ struct nlattr *attrs;
+ struct nlattr *prop;
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
+ struct tipc_link *bcl = tn->bcl;
- msg.portid = info->snd_portid;
- msg.seq = info->snd_seq;
-
- if (!info->attrs[TIPC_NLA_LINK_NAME])
- return -EINVAL;
- name = nla_data(info->attrs[TIPC_NLA_LINK_NAME]);
+ if (!bcl)
+ return 0;
- msg.skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
- if (!msg.skb)
- return -ENOMEM;
+ tipc_bcast_lock(net);
- if (strcmp(name, tipc_bclink_name) == 0) {
- err = tipc_nl_add_bc_link(net, &msg);
- if (err) {
- nlmsg_free(msg.skb);
- return err;
- }
- } else {
- int bearer_id;
- struct tipc_node *node;
- struct tipc_link *link;
+ hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family,
+ NLM_F_MULTI, TIPC_NL_LINK_GET);
+ if (!hdr)
+ return -EMSGSIZE;
- node = tipc_link_find_owner(net, name, &bearer_id);
- if (!node)
- return -EINVAL;
+ attrs = nla_nest_start(msg->skb, TIPC_NLA_LINK);
+ if (!attrs)
+ goto msg_full;
- tipc_node_lock(node);
- link = node->links[bearer_id].link;
- if (!link) {
- tipc_node_unlock(node);
- nlmsg_free(msg.skb);
- return -EINVAL;
- }
+ /* The broadcast link is always up */
+ if (nla_put_flag(msg->skb, TIPC_NLA_LINK_UP))
+ goto attr_msg_full;
- err = __tipc_nl_add_link(net, &msg, link, 0);
- tipc_node_unlock(node);
- if (err) {
- nlmsg_free(msg.skb);
- return err;
- }
- }
+ if (nla_put_flag(msg->skb, TIPC_NLA_LINK_BROADCAST))
+ goto attr_msg_full;
+ if (nla_put_string(msg->skb, TIPC_NLA_LINK_NAME, bcl->name))
+ goto attr_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_LINK_RX, bcl->rcv_nxt))
+ goto attr_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_LINK_TX, bcl->snd_nxt))
+ goto attr_msg_full;
- return genlmsg_reply(msg.skb, info);
-}
+ prop = nla_nest_start(msg->skb, TIPC_NLA_LINK_PROP);
+ if (!prop)
+ goto attr_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PROP_WIN, bcl->window))
+ goto prop_msg_full;
+ nla_nest_end(msg->skb, prop);
-int tipc_nl_link_reset_stats(struct sk_buff *skb, struct genl_info *info)
-{
- int err;
- char *link_name;
- unsigned int bearer_id;
- struct tipc_link *link;
- struct tipc_node *node;
- struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1];
- struct net *net = sock_net(skb->sk);
-
- if (!info->attrs[TIPC_NLA_LINK])
- return -EINVAL;
-
- err = nla_parse_nested(attrs, TIPC_NLA_LINK_MAX,
- info->attrs[TIPC_NLA_LINK],
- tipc_nl_link_policy);
+ err = __tipc_nl_add_bc_link_stat(msg->skb, &bcl->stats);
if (err)
- return err;
-
- if (!attrs[TIPC_NLA_LINK_NAME])
- return -EINVAL;
-
- link_name = nla_data(attrs[TIPC_NLA_LINK_NAME]);
+ goto attr_msg_full;
- if (strcmp(link_name, tipc_bclink_name) == 0) {
- err = tipc_bclink_reset_stats(net);
- if (err)
- return err;
- return 0;
- }
+ tipc_bcast_unlock(net);
+ nla_nest_end(msg->skb, attrs);
+ genlmsg_end(msg->skb, hdr);
- node = tipc_link_find_owner(net, link_name, &bearer_id);
- if (!node)
- return -EINVAL;
+ return 0;
- tipc_node_lock(node);
+prop_msg_full:
+ nla_nest_cancel(msg->skb, prop);
+attr_msg_full:
+ nla_nest_cancel(msg->skb, attrs);
+msg_full:
+ tipc_bcast_unlock(net);
+ genlmsg_cancel(msg->skb, hdr);
- link = node->links[bearer_id].link;
- if (!link) {
- tipc_node_unlock(node);
- return -EINVAL;
- }
+ return -EMSGSIZE;
+}
- link_reset_statistics(link);
+void tipc_link_set_tolerance(struct tipc_link *l, u32 tol)
+{
+ l->tolerance = tol;
+ tipc_link_proto_xmit(l, STATE_MSG, 0, 0, tol, 0);
+}
- tipc_node_unlock(node);
+void tipc_link_set_prio(struct tipc_link *l, u32 prio)
+{
+ l->priority = prio;
+ tipc_link_proto_xmit(l, STATE_MSG, 0, 0, 0, prio);
+}
- return 0;
+void tipc_link_set_abort_limit(struct tipc_link *l, u32 limit)
+{
+ l->abort_limit = limit;
}
diff --git a/net/tipc/link.h b/net/tipc/link.h
index 66d859b66c84..b2ae0f4276af 100644
--- a/net/tipc/link.h
+++ b/net/tipc/link.h
@@ -45,10 +45,6 @@
*/
#define ELINKCONG EAGAIN /* link congestion <=> resource unavailable */
-/* Out-of-range value for link sequence numbers
- */
-#define INVALID_LINK_SEQ 0x10000
-
/* Link FSM events:
*/
enum {
@@ -75,151 +71,6 @@ enum {
*/
#define MAX_PKT_DEFAULT 1500
-struct tipc_stats {
- u32 sent_info; /* used in counting # sent packets */
- u32 recv_info; /* used in counting # recv'd packets */
- u32 sent_states;
- u32 recv_states;
- u32 sent_probes;
- u32 recv_probes;
- u32 sent_nacks;
- u32 recv_nacks;
- u32 sent_acks;
- u32 sent_bundled;
- u32 sent_bundles;
- u32 recv_bundled;
- u32 recv_bundles;
- u32 retransmitted;
- u32 sent_fragmented;
- u32 sent_fragments;
- u32 recv_fragmented;
- u32 recv_fragments;
- u32 link_congs; /* # port sends blocked by congestion */
- u32 deferred_recv;
- u32 duplicates;
- u32 max_queue_sz; /* send queue size high water mark */
- u32 accu_queue_sz; /* used for send queue size profiling */
- u32 queue_sz_counts; /* used for send queue size profiling */
- u32 msg_length_counts; /* used for message length profiling */
- u32 msg_lengths_total; /* used for message length profiling */
- u32 msg_length_profile[7]; /* used for msg. length profiling */
-};
-
-/**
- * struct tipc_link - TIPC link data structure
- * @addr: network address of link's peer node
- * @name: link name character string
- * @media_addr: media address to use when sending messages over link
- * @timer: link timer
- * @net: pointer to namespace struct
- * @refcnt: reference counter for permanent references (owner node & timer)
- * @peer_session: link session # being used by peer end of link
- * @peer_bearer_id: bearer id used by link's peer endpoint
- * @bearer_id: local bearer id used by link
- * @tolerance: minimum link continuity loss needed to reset link [in ms]
- * @keepalive_intv: link keepalive timer interval
- * @abort_limit: # of unacknowledged continuity probes needed to reset link
- * @state: current state of link FSM
- * @peer_caps: bitmap describing capabilities of peer node
- * @silent_intv_cnt: # of timer intervals without any reception from peer
- * @proto_msg: template for control messages generated by link
- * @pmsg: convenience pointer to "proto_msg" field
- * @priority: current link priority
- * @net_plane: current link network plane ('A' through 'H')
- * @backlog_limit: backlog queue congestion thresholds (indexed by importance)
- * @exp_msg_count: # of tunnelled messages expected during link changeover
- * @reset_rcv_checkpt: seq # of last acknowledged message at time of link reset
- * @mtu: current maximum packet size for this link
- * @advertised_mtu: advertised own mtu when link is being established
- * @transmitq: queue for sent, non-acked messages
- * @backlogq: queue for messages waiting to be sent
- * @snt_nxt: next sequence number to use for outbound messages
- * @last_retransmitted: sequence number of most recently retransmitted message
- * @stale_count: # of identical retransmit requests made by peer
- * @ackers: # of peers that needs to ack each packet before it can be released
- * @acked: # last packet acked by a certain peer. Used for broadcast.
- * @rcv_nxt: next sequence number to expect for inbound messages
- * @deferred_queue: deferred queue saved OOS b'cast message received from node
- * @unacked_window: # of inbound messages rx'd without ack'ing back to peer
- * @inputq: buffer queue for messages to be delivered upwards
- * @namedq: buffer queue for name table messages to be delivered upwards
- * @next_out: ptr to first unsent outbound message in queue
- * @wakeupq: linked list of wakeup msgs waiting for link congestion to abate
- * @long_msg_seq_no: next identifier to use for outbound fragmented messages
- * @reasm_buf: head of partially reassembled inbound message fragments
- * @bc_rcvr: marks that this is a broadcast receiver link
- * @stats: collects statistics regarding link activity
- */
-struct tipc_link {
- u32 addr;
- char name[TIPC_MAX_LINK_NAME];
- struct tipc_media_addr *media_addr;
- struct net *net;
-
- /* Management and link supervision data */
- u32 peer_session;
- u32 peer_bearer_id;
- u32 bearer_id;
- u32 tolerance;
- unsigned long keepalive_intv;
- u32 abort_limit;
- u32 state;
- u16 peer_caps;
- bool active;
- u32 silent_intv_cnt;
- struct {
- unchar hdr[INT_H_SIZE];
- unchar body[TIPC_MAX_IF_NAME];
- } proto_msg;
- struct tipc_msg *pmsg;
- u32 priority;
- char net_plane;
-
- /* Failover/synch */
- u16 drop_point;
- struct sk_buff *failover_reasm_skb;
-
- /* Max packet negotiation */
- u16 mtu;
- u16 advertised_mtu;
-
- /* Sending */
- struct sk_buff_head transmq;
- struct sk_buff_head backlogq;
- struct {
- u16 len;
- u16 limit;
- } backlog[5];
- u16 snd_nxt;
- u16 last_retransm;
- u16 window;
- u32 stale_count;
-
- /* Reception */
- u16 rcv_nxt;
- u32 rcv_unacked;
- struct sk_buff_head deferdq;
- struct sk_buff_head *inputq;
- struct sk_buff_head *namedq;
-
- /* Congestion handling */
- struct sk_buff_head wakeupq;
-
- /* Fragmentation/reassembly */
- struct sk_buff *reasm_buf;
-
- /* Broadcast */
- u16 ackers;
- u16 acked;
- struct tipc_link *bc_rcvlink;
- struct tipc_link *bc_sndlink;
- int nack_state;
- bool bc_peer_is_up;
-
- /* Statistics */
- struct tipc_stats stats;
-};
-
bool tipc_link_create(struct net *net, char *if_name, int bearer_id,
int tolerance, char net_plane, u32 mtu, int priority,
int window, u32 session, u32 ownnode, u32 peer,
@@ -235,11 +86,11 @@ bool tipc_link_bc_create(struct net *net, u32 ownnode, u32 peer,
struct sk_buff_head *namedq,
struct tipc_link *bc_sndlink,
struct tipc_link **link);
+void tipc_link_reinit(struct tipc_link *l, u32 addr);
void tipc_link_tnl_prepare(struct tipc_link *l, struct tipc_link *tnl,
int mtyp, struct sk_buff_head *xmitq);
void tipc_link_build_reset_msg(struct tipc_link *l, struct sk_buff_head *xmitq);
int tipc_link_fsm_evt(struct tipc_link *l, int evt);
-void tipc_link_reset_fragments(struct tipc_link *l_ptr);
bool tipc_link_is_up(struct tipc_link *l);
bool tipc_link_peer_is_down(struct tipc_link *l);
bool tipc_link_is_reset(struct tipc_link *l);
@@ -248,15 +99,25 @@ bool tipc_link_is_synching(struct tipc_link *l);
bool tipc_link_is_failingover(struct tipc_link *l);
bool tipc_link_is_blocked(struct tipc_link *l);
void tipc_link_set_active(struct tipc_link *l, bool active);
-void tipc_link_reset(struct tipc_link *l_ptr);
-int tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list,
+void tipc_link_reset(struct tipc_link *l);
+void tipc_link_reset_stats(struct tipc_link *l);
+int tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list,
struct sk_buff_head *xmitq);
+struct sk_buff_head *tipc_link_inputq(struct tipc_link *l);
+u16 tipc_link_rcv_nxt(struct tipc_link *l);
+u16 tipc_link_acked(struct tipc_link *l);
+u32 tipc_link_id(struct tipc_link *l);
+char *tipc_link_name(struct tipc_link *l);
+char tipc_link_plane(struct tipc_link *l);
+int tipc_link_prio(struct tipc_link *l);
+int tipc_link_window(struct tipc_link *l);
+unsigned long tipc_link_tolerance(struct tipc_link *l);
+void tipc_link_set_tolerance(struct tipc_link *l, u32 tol);
+void tipc_link_set_prio(struct tipc_link *l, u32 prio);
+void tipc_link_set_abort_limit(struct tipc_link *l, u32 limit);
void tipc_link_set_queue_limits(struct tipc_link *l, u32 window);
-
-int tipc_nl_link_dump(struct sk_buff *skb, struct netlink_callback *cb);
-int tipc_nl_link_get(struct sk_buff *skb, struct genl_info *info);
-int tipc_nl_link_set(struct sk_buff *skb, struct genl_info *info);
-int tipc_nl_link_reset_stats(struct sk_buff *skb, struct genl_info *info);
+int __tipc_nl_add_link(struct net *net, struct tipc_nl_msg *msg,
+ struct tipc_link *link, int nlflags);
int tipc_nl_parse_link_prop(struct nlattr *prop, struct nlattr *props[]);
int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq);
int tipc_link_rcv(struct tipc_link *l, struct sk_buff *skb,
diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c
index c07612bab95c..ebe9d0ff6e9e 100644
--- a/net/tipc/name_distr.c
+++ b/net/tipc/name_distr.c
@@ -84,31 +84,6 @@ static struct sk_buff *named_prepare_buf(struct net *net, u32 type, u32 size,
return buf;
}
-void named_cluster_distribute(struct net *net, struct sk_buff *skb)
-{
- struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct sk_buff *oskb;
- struct tipc_node *node;
- u32 dnode;
-
- rcu_read_lock();
- list_for_each_entry_rcu(node, &tn->node_list, list) {
- dnode = node->addr;
- if (in_own_node(net, dnode))
- continue;
- if (!tipc_node_is_up(node))
- continue;
- oskb = pskb_copy(skb, GFP_ATOMIC);
- if (!oskb)
- break;
- msg_set_destnode(buf_msg(oskb), dnode);
- tipc_node_xmit_skb(net, oskb, dnode, 0);
- }
- rcu_read_unlock();
-
- kfree_skb(skb);
-}
-
/**
* tipc_named_publish - tell other nodes about a new publication by this node
*/
@@ -226,42 +201,6 @@ void tipc_named_node_up(struct net *net, u32 dnode)
tipc_node_xmit(net, &head, dnode, 0);
}
-static void tipc_publ_subscribe(struct net *net, struct publication *publ,
- u32 addr)
-{
- struct tipc_node *node;
-
- if (in_own_node(net, addr))
- return;
-
- node = tipc_node_find(net, addr);
- if (!node) {
- pr_warn("Node subscription rejected, unknown node 0x%x\n",
- addr);
- return;
- }
-
- tipc_node_lock(node);
- list_add_tail(&publ->nodesub_list, &node->publ_list);
- tipc_node_unlock(node);
- tipc_node_put(node);
-}
-
-static void tipc_publ_unsubscribe(struct net *net, struct publication *publ,
- u32 addr)
-{
- struct tipc_node *node;
-
- node = tipc_node_find(net, addr);
- if (!node)
- return;
-
- tipc_node_lock(node);
- list_del_init(&publ->nodesub_list);
- tipc_node_unlock(node);
- tipc_node_put(node);
-}
-
/**
* tipc_publ_purge - remove publication associated with a failed node
*
@@ -277,7 +216,7 @@ static void tipc_publ_purge(struct net *net, struct publication *publ, u32 addr)
p = tipc_nametbl_remove_publ(net, publ->type, publ->lower,
publ->node, publ->ref, publ->key);
if (p)
- tipc_publ_unsubscribe(net, p, addr);
+ tipc_node_unsubscribe(net, &p->nodesub_list, addr);
spin_unlock_bh(&tn->nametbl_lock);
if (p != publ) {
@@ -317,7 +256,7 @@ static bool tipc_update_nametbl(struct net *net, struct distr_item *i,
TIPC_CLUSTER_SCOPE, node,
ntohl(i->ref), ntohl(i->key));
if (publ) {
- tipc_publ_subscribe(net, publ, node);
+ tipc_node_subscribe(net, &publ->nodesub_list, node);
return true;
}
} else if (dtype == WITHDRAWAL) {
@@ -326,7 +265,7 @@ static bool tipc_update_nametbl(struct net *net, struct distr_item *i,
node, ntohl(i->ref),
ntohl(i->key));
if (publ) {
- tipc_publ_unsubscribe(net, publ, node);
+ tipc_node_unsubscribe(net, &publ->nodesub_list, node);
kfree_rcu(publ, rcu);
return true;
}
@@ -397,6 +336,7 @@ void tipc_named_rcv(struct net *net, struct sk_buff_head *inputq)
spin_lock_bh(&tn->nametbl_lock);
for (skb = skb_dequeue(inputq); skb; skb = skb_dequeue(inputq)) {
+ skb_linearize(skb);
msg = buf_msg(skb);
mtype = msg_type(msg);
item = (struct distr_item *)msg_data(msg);
diff --git a/net/tipc/name_distr.h b/net/tipc/name_distr.h
index dd2d9fd80da2..1264ba0af937 100644
--- a/net/tipc/name_distr.h
+++ b/net/tipc/name_distr.h
@@ -69,7 +69,6 @@ struct distr_item {
struct sk_buff *tipc_named_publish(struct net *net, struct publication *publ);
struct sk_buff *tipc_named_withdraw(struct net *net, struct publication *publ);
-void named_cluster_distribute(struct net *net, struct sk_buff *buf);
void tipc_named_node_up(struct net *net, u32 dnode);
void tipc_named_rcv(struct net *net, struct sk_buff_head *msg_queue);
void tipc_named_reinit(struct net *net);
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index 0f47f08bf38f..91fce70291a8 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -42,6 +42,7 @@
#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 */
@@ -677,7 +678,7 @@ struct publication *tipc_nametbl_publish(struct net *net, u32 type, u32 lower,
spin_unlock_bh(&tn->nametbl_lock);
if (buf)
- named_cluster_distribute(net, buf);
+ tipc_node_broadcast(net, buf);
return publ;
}
@@ -709,7 +710,7 @@ int tipc_nametbl_withdraw(struct net *net, u32 type, u32 lower, u32 ref,
spin_unlock_bh(&tn->nametbl_lock);
if (skb) {
- named_cluster_distribute(net, skb);
+ tipc_node_broadcast(net, skb);
return 1;
}
return 0;
diff --git a/net/tipc/netlink.c b/net/tipc/netlink.c
index 7f6475efc984..8975b0135b76 100644
--- a/net/tipc/netlink.c
+++ b/net/tipc/netlink.c
@@ -101,18 +101,18 @@ static const struct genl_ops tipc_genl_v2_ops[] = {
},
{
.cmd = TIPC_NL_LINK_GET,
- .doit = tipc_nl_link_get,
- .dumpit = tipc_nl_link_dump,
+ .doit = tipc_nl_node_get_link,
+ .dumpit = tipc_nl_node_dump_link,
.policy = tipc_nl_policy,
},
{
.cmd = TIPC_NL_LINK_SET,
- .doit = tipc_nl_link_set,
+ .doit = tipc_nl_node_set_link,
.policy = tipc_nl_policy,
},
{
.cmd = TIPC_NL_LINK_RESET_STATS,
- .doit = tipc_nl_link_reset_stats,
+ .doit = tipc_nl_node_reset_link_stats,
.policy = tipc_nl_policy,
},
{
diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
index 1eadc95e1132..2c016fdefe97 100644
--- a/net/tipc/netlink_compat.c
+++ b/net/tipc/netlink_compat.c
@@ -1023,25 +1023,25 @@ static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg)
msg->req_type = TIPC_TLV_LINK_NAME;
msg->rep_size = ULTRA_STRING_MAX_LEN;
msg->rep_type = TIPC_TLV_ULTRA_STRING;
- dump.dumpit = tipc_nl_link_dump;
+ dump.dumpit = tipc_nl_node_dump_link;
dump.format = tipc_nl_compat_link_stat_dump;
return tipc_nl_compat_dumpit(&dump, msg);
case TIPC_CMD_GET_LINKS:
msg->req_type = TIPC_TLV_NET_ADDR;
msg->rep_size = ULTRA_STRING_MAX_LEN;
- dump.dumpit = tipc_nl_link_dump;
+ dump.dumpit = tipc_nl_node_dump_link;
dump.format = tipc_nl_compat_link_dump;
return tipc_nl_compat_dumpit(&dump, msg);
case TIPC_CMD_SET_LINK_TOL:
case TIPC_CMD_SET_LINK_PRI:
case TIPC_CMD_SET_LINK_WINDOW:
msg->req_type = TIPC_TLV_LINK_CONFIG;
- doit.doit = tipc_nl_link_set;
+ doit.doit = tipc_nl_node_set_link;
doit.transcode = tipc_nl_compat_link_set;
return tipc_nl_compat_doit(&doit, msg);
case TIPC_CMD_RESET_LINK_STATS:
msg->req_type = TIPC_TLV_LINK_NAME;
- doit.doit = tipc_nl_link_reset_stats;
+ doit.doit = tipc_nl_node_reset_link_stats;
doit.transcode = tipc_nl_compat_link_reset_stats;
return tipc_nl_compat_doit(&doit, msg);
case TIPC_CMD_SHOW_NAME_TABLE:
diff --git a/net/tipc/node.c b/net/tipc/node.c
index 20cddec0a43c..fa97d9649a28 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -42,6 +42,84 @@
#include "bcast.h"
#include "discover.h"
+#define INVALID_NODE_SIG 0x10000
+
+/* Flags used to take different actions according to flag type
+ * TIPC_NOTIFY_NODE_DOWN: notify node is down
+ * TIPC_NOTIFY_NODE_UP: notify node is up
+ * TIPC_DISTRIBUTE_NAME: publish or withdraw link state name type
+ */
+enum {
+ TIPC_NOTIFY_NODE_DOWN = (1 << 3),
+ TIPC_NOTIFY_NODE_UP = (1 << 4),
+ TIPC_NOTIFY_LINK_UP = (1 << 6),
+ TIPC_NOTIFY_LINK_DOWN = (1 << 7)
+};
+
+struct tipc_link_entry {
+ struct tipc_link *link;
+ spinlock_t lock; /* per link */
+ u32 mtu;
+ struct sk_buff_head inputq;
+ struct tipc_media_addr maddr;
+};
+
+struct tipc_bclink_entry {
+ struct tipc_link *link;
+ struct sk_buff_head inputq1;
+ struct sk_buff_head arrvq;
+ struct sk_buff_head inputq2;
+ struct sk_buff_head namedq;
+};
+
+/**
+ * struct tipc_node - TIPC node structure
+ * @addr: network address of node
+ * @ref: reference counter to node object
+ * @lock: rwlock governing access to structure
+ * @net: the applicable net namespace
+ * @hash: links to adjacent nodes in unsorted hash chain
+ * @inputq: pointer to input queue containing messages for msg event
+ * @namedq: pointer to name table input queue with name table messages
+ * @active_links: bearer ids of active links, used as index into links[] array
+ * @links: array containing references to all links to node
+ * @action_flags: bit mask of different types of node actions
+ * @state: connectivity state vs peer node
+ * @sync_point: sequence number where synch/failover is finished
+ * @list: links to adjacent nodes in sorted list of cluster's nodes
+ * @working_links: number of working links to node (both active and standby)
+ * @link_cnt: number of links to node
+ * @capabilities: bitmap, indicating peer node's functional capabilities
+ * @signature: node instance identifier
+ * @link_id: local and remote bearer ids of changing link, if any
+ * @publ_list: list of publications
+ * @rcu: rcu struct for tipc_node
+ */
+struct tipc_node {
+ u32 addr;
+ struct kref kref;
+ rwlock_t lock;
+ struct net *net;
+ struct hlist_node hash;
+ int active_links[2];
+ struct tipc_link_entry links[MAX_BEARERS];
+ struct tipc_bclink_entry bc_entry;
+ int action_flags;
+ struct list_head list;
+ int state;
+ u16 sync_point;
+ int link_cnt;
+ u16 working_links;
+ u16 capabilities;
+ u32 signature;
+ u32 link_id;
+ struct list_head publ_list;
+ struct list_head conn_sks;
+ unsigned long keepalive_intv;
+ struct timer_list timer;
+ struct rcu_head rcu;
+};
+
/* Node FSM states and events:
*/
enum {
@@ -75,6 +153,9 @@ static void node_lost_contact(struct tipc_node *n, struct sk_buff_head *inputq);
static void tipc_node_delete(struct tipc_node *node);
static void tipc_node_timeout(unsigned long data);
static void tipc_node_fsm_evt(struct tipc_node *n, int evt);
+static struct tipc_node *tipc_node_find(struct net *net, u32 addr);
+static void tipc_node_put(struct tipc_node *node);
+static bool tipc_node_is_up(struct tipc_node *n);
struct tipc_sock_conn {
u32 port;
@@ -83,12 +164,54 @@ struct tipc_sock_conn {
struct list_head list;
};
+static const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = {
+ [TIPC_NLA_LINK_UNSPEC] = { .type = NLA_UNSPEC },
+ [TIPC_NLA_LINK_NAME] = {
+ .type = NLA_STRING,
+ .len = TIPC_MAX_LINK_NAME
+ },
+ [TIPC_NLA_LINK_MTU] = { .type = NLA_U32 },
+ [TIPC_NLA_LINK_BROADCAST] = { .type = NLA_FLAG },
+ [TIPC_NLA_LINK_UP] = { .type = NLA_FLAG },
+ [TIPC_NLA_LINK_ACTIVE] = { .type = NLA_FLAG },
+ [TIPC_NLA_LINK_PROP] = { .type = NLA_NESTED },
+ [TIPC_NLA_LINK_STATS] = { .type = NLA_NESTED },
+ [TIPC_NLA_LINK_RX] = { .type = NLA_U32 },
+ [TIPC_NLA_LINK_TX] = { .type = NLA_U32 }
+};
+
static const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = {
[TIPC_NLA_NODE_UNSPEC] = { .type = NLA_UNSPEC },
[TIPC_NLA_NODE_ADDR] = { .type = NLA_U32 },
[TIPC_NLA_NODE_UP] = { .type = NLA_FLAG }
};
+static struct tipc_link *node_active_link(struct tipc_node *n, int sel)
+{
+ int bearer_id = n->active_links[sel & 1];
+
+ if (unlikely(bearer_id == INVALID_BEARER_ID))
+ return NULL;
+
+ return n->links[bearer_id].link;
+}
+
+int tipc_node_get_mtu(struct net *net, u32 addr, u32 sel)
+{
+ struct tipc_node *n;
+ int bearer_id;
+ unsigned int mtu = MAX_MSG_SIZE;
+
+ n = tipc_node_find(net, addr);
+ if (unlikely(!n))
+ return mtu;
+
+ bearer_id = n->active_links[sel & 1];
+ if (likely(bearer_id != INVALID_BEARER_ID))
+ mtu = n->links[bearer_id].mtu;
+ tipc_node_put(n);
+ return mtu;
+}
/*
* A trivial power-of-two bitmask technique is used for speed, since this
* operation is done for every incoming TIPC packet. The number of hash table
@@ -107,7 +230,7 @@ static void tipc_node_kref_release(struct kref *kref)
tipc_node_delete(node);
}
-void tipc_node_put(struct tipc_node *node)
+static void tipc_node_put(struct tipc_node *node)
{
kref_put(&node->kref, tipc_node_kref_release);
}
@@ -120,7 +243,7 @@ static void tipc_node_get(struct tipc_node *node)
/*
* tipc_node_find - locate specified node object, if it exists
*/
-struct tipc_node *tipc_node_find(struct net *net, u32 addr)
+static struct tipc_node *tipc_node_find(struct net *net, u32 addr)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_node *node;
@@ -141,66 +264,122 @@ struct tipc_node *tipc_node_find(struct net *net, u32 addr)
return NULL;
}
+static void tipc_node_read_lock(struct tipc_node *n)
+{
+ read_lock_bh(&n->lock);
+}
+
+static void tipc_node_read_unlock(struct tipc_node *n)
+{
+ read_unlock_bh(&n->lock);
+}
+
+static void tipc_node_write_lock(struct tipc_node *n)
+{
+ write_lock_bh(&n->lock);
+}
+
+static void tipc_node_write_unlock(struct tipc_node *n)
+{
+ struct net *net = n->net;
+ u32 addr = 0;
+ u32 flags = n->action_flags;
+ u32 link_id = 0;
+ struct list_head *publ_list;
+
+ if (likely(!flags)) {
+ write_unlock_bh(&n->lock);
+ return;
+ }
+
+ addr = n->addr;
+ link_id = n->link_id;
+ publ_list = &n->publ_list;
+
+ n->action_flags &= ~(TIPC_NOTIFY_NODE_DOWN | TIPC_NOTIFY_NODE_UP |
+ TIPC_NOTIFY_LINK_DOWN | TIPC_NOTIFY_LINK_UP);
+
+ write_unlock_bh(&n->lock);
+
+ if (flags & TIPC_NOTIFY_NODE_DOWN)
+ tipc_publ_notify(net, publ_list, addr);
+
+ if (flags & TIPC_NOTIFY_NODE_UP)
+ tipc_named_node_up(net, addr);
+
+ if (flags & TIPC_NOTIFY_LINK_UP)
+ tipc_nametbl_publish(net, TIPC_LINK_STATE, addr, addr,
+ TIPC_NODE_SCOPE, link_id, addr);
+
+ if (flags & TIPC_NOTIFY_LINK_DOWN)
+ tipc_nametbl_withdraw(net, TIPC_LINK_STATE, addr,
+ link_id, addr);
+}
+
struct tipc_node *tipc_node_create(struct net *net, u32 addr, u16 capabilities)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct tipc_node *n_ptr, *temp_node;
+ struct tipc_node *n, *temp_node;
+ int i;
spin_lock_bh(&tn->node_list_lock);
- n_ptr = tipc_node_find(net, addr);
- if (n_ptr)
+ n = tipc_node_find(net, addr);
+ if (n)
goto exit;
- n_ptr = kzalloc(sizeof(*n_ptr), GFP_ATOMIC);
- if (!n_ptr) {
+ n = kzalloc(sizeof(*n), GFP_ATOMIC);
+ if (!n) {
pr_warn("Node creation failed, no memory\n");
goto exit;
}
- n_ptr->addr = addr;
- n_ptr->net = net;
- n_ptr->capabilities = capabilities;
- kref_init(&n_ptr->kref);
- spin_lock_init(&n_ptr->lock);
- INIT_HLIST_NODE(&n_ptr->hash);
- INIT_LIST_HEAD(&n_ptr->list);
- INIT_LIST_HEAD(&n_ptr->publ_list);
- INIT_LIST_HEAD(&n_ptr->conn_sks);
- skb_queue_head_init(&n_ptr->bc_entry.namedq);
- skb_queue_head_init(&n_ptr->bc_entry.inputq1);
- __skb_queue_head_init(&n_ptr->bc_entry.arrvq);
- skb_queue_head_init(&n_ptr->bc_entry.inputq2);
- hlist_add_head_rcu(&n_ptr->hash, &tn->node_htable[tipc_hashfn(addr)]);
+ n->addr = addr;
+ n->net = net;
+ n->capabilities = capabilities;
+ kref_init(&n->kref);
+ rwlock_init(&n->lock);
+ INIT_HLIST_NODE(&n->hash);
+ INIT_LIST_HEAD(&n->list);
+ INIT_LIST_HEAD(&n->publ_list);
+ INIT_LIST_HEAD(&n->conn_sks);
+ skb_queue_head_init(&n->bc_entry.namedq);
+ skb_queue_head_init(&n->bc_entry.inputq1);
+ __skb_queue_head_init(&n->bc_entry.arrvq);
+ skb_queue_head_init(&n->bc_entry.inputq2);
+ for (i = 0; i < MAX_BEARERS; i++)
+ spin_lock_init(&n->links[i].lock);
+ hlist_add_head_rcu(&n->hash, &tn->node_htable[tipc_hashfn(addr)]);
list_for_each_entry_rcu(temp_node, &tn->node_list, list) {
- if (n_ptr->addr < temp_node->addr)
+ if (n->addr < temp_node->addr)
break;
}
- list_add_tail_rcu(&n_ptr->list, &temp_node->list);
- n_ptr->state = SELF_DOWN_PEER_LEAVING;
- n_ptr->signature = INVALID_NODE_SIG;
- n_ptr->active_links[0] = INVALID_BEARER_ID;
- n_ptr->active_links[1] = INVALID_BEARER_ID;
- if (!tipc_link_bc_create(net, tipc_own_addr(net), n_ptr->addr,
- U16_MAX, tipc_bc_sndlink(net)->window,
- n_ptr->capabilities,
- &n_ptr->bc_entry.inputq1,
- &n_ptr->bc_entry.namedq,
+ list_add_tail_rcu(&n->list, &temp_node->list);
+ n->state = SELF_DOWN_PEER_LEAVING;
+ n->signature = INVALID_NODE_SIG;
+ n->active_links[0] = INVALID_BEARER_ID;
+ n->active_links[1] = INVALID_BEARER_ID;
+ if (!tipc_link_bc_create(net, tipc_own_addr(net), n->addr,
+ U16_MAX,
+ tipc_link_window(tipc_bc_sndlink(net)),
+ n->capabilities,
+ &n->bc_entry.inputq1,
+ &n->bc_entry.namedq,
tipc_bc_sndlink(net),
- &n_ptr->bc_entry.link)) {
+ &n->bc_entry.link)) {
pr_warn("Broadcast rcv link creation failed, no memory\n");
- kfree(n_ptr);
- n_ptr = NULL;
+ kfree(n);
+ n = NULL;
goto exit;
}
- tipc_node_get(n_ptr);
- setup_timer(&n_ptr->timer, tipc_node_timeout, (unsigned long)n_ptr);
- n_ptr->keepalive_intv = U32_MAX;
+ tipc_node_get(n);
+ setup_timer(&n->timer, tipc_node_timeout, (unsigned long)n);
+ n->keepalive_intv = U32_MAX;
exit:
spin_unlock_bh(&tn->node_list_lock);
- return n_ptr;
+ return n;
}
static void tipc_node_calculate_timer(struct tipc_node *n, struct tipc_link *l)
{
- unsigned long tol = l->tolerance;
+ unsigned long tol = tipc_link_tolerance(l);
unsigned long intv = ((tol / 4) > 500) ? 500 : tol / 4;
unsigned long keepalive_intv = msecs_to_jiffies(intv);
@@ -209,7 +388,7 @@ static void tipc_node_calculate_timer(struct tipc_node *n, struct tipc_link *l)
n->keepalive_intv = keepalive_intv;
/* Ensure link's abort limit corresponds to current interval */
- l->abort_limit = l->tolerance / jiffies_to_msecs(n->keepalive_intv);
+ tipc_link_set_abort_limit(l, tol / jiffies_to_msecs(n->keepalive_intv));
}
static void tipc_node_delete(struct tipc_node *node)
@@ -234,6 +413,42 @@ void tipc_node_stop(struct net *net)
spin_unlock_bh(&tn->node_list_lock);
}
+void tipc_node_subscribe(struct net *net, struct list_head *subscr, u32 addr)
+{
+ struct tipc_node *n;
+
+ if (in_own_node(net, addr))
+ return;
+
+ n = tipc_node_find(net, addr);
+ if (!n) {
+ pr_warn("Node subscribe rejected, unknown node 0x%x\n", addr);
+ return;
+ }
+ tipc_node_write_lock(n);
+ list_add_tail(subscr, &n->publ_list);
+ tipc_node_write_unlock(n);
+ tipc_node_put(n);
+}
+
+void tipc_node_unsubscribe(struct net *net, struct list_head *subscr, u32 addr)
+{
+ struct tipc_node *n;
+
+ if (in_own_node(net, addr))
+ return;
+
+ n = tipc_node_find(net, addr);
+ if (!n) {
+ pr_warn("Node unsubscribe rejected, unknown node 0x%x\n", addr);
+ return;
+ }
+ tipc_node_write_lock(n);
+ list_del_init(subscr);
+ tipc_node_write_unlock(n);
+ tipc_node_put(n);
+}
+
int tipc_node_add_conn(struct net *net, u32 dnode, u32 port, u32 peer_port)
{
struct tipc_node *node;
@@ -257,9 +472,9 @@ int tipc_node_add_conn(struct net *net, u32 dnode, u32 port, u32 peer_port)
conn->port = port;
conn->peer_port = peer_port;
- tipc_node_lock(node);
+ tipc_node_write_lock(node);
list_add_tail(&conn->list, &node->conn_sks);
- tipc_node_unlock(node);
+ tipc_node_write_unlock(node);
exit:
tipc_node_put(node);
return err;
@@ -277,14 +492,14 @@ void tipc_node_remove_conn(struct net *net, u32 dnode, u32 port)
if (!node)
return;
- tipc_node_lock(node);
+ tipc_node_write_lock(node);
list_for_each_entry_safe(conn, safe, &node->conn_sks, list) {
if (port != conn->port)
continue;
list_del(&conn->list);
kfree(conn);
}
- tipc_node_unlock(node);
+ tipc_node_write_unlock(node);
tipc_node_put(node);
}
@@ -301,14 +516,16 @@ static void tipc_node_timeout(unsigned long data)
__skb_queue_head_init(&xmitq);
for (bearer_id = 0; bearer_id < MAX_BEARERS; bearer_id++) {
- tipc_node_lock(n);
+ tipc_node_read_lock(n);
le = &n->links[bearer_id];
+ spin_lock_bh(&le->lock);
if (le->link) {
/* Link tolerance may change asynchronously: */
tipc_node_calculate_timer(n, le->link);
rc = tipc_link_timeout(le->link, &xmitq);
}
- tipc_node_unlock(n);
+ spin_unlock_bh(&le->lock);
+ tipc_node_read_unlock(n);
tipc_bearer_xmit(n->net, bearer_id, &xmitq, &le->maddr);
if (rc & TIPC_LINK_DOWN_EVT)
tipc_node_link_down(n, bearer_id, false);
@@ -340,16 +557,16 @@ static void __tipc_node_link_up(struct tipc_node *n, int bearer_id,
n->working_links++;
n->action_flags |= TIPC_NOTIFY_LINK_UP;
- n->link_id = nl->peer_bearer_id << 16 | bearer_id;
+ n->link_id = tipc_link_id(nl);
/* Leave room for tunnel header when returning 'mtu' to users: */
- n->links[bearer_id].mtu = nl->mtu - INT_H_SIZE;
+ n->links[bearer_id].mtu = tipc_link_mtu(nl) - INT_H_SIZE;
tipc_bearer_add_dest(n->net, bearer_id, n->addr);
tipc_bcast_inc_bearer_dst_cnt(n->net, bearer_id);
pr_debug("Established link <%s> on network plane %c\n",
- nl->name, nl->net_plane);
+ tipc_link_name(nl), tipc_link_plane(nl));
/* First link? => give it both slots */
if (!ol) {
@@ -362,17 +579,17 @@ static void __tipc_node_link_up(struct tipc_node *n, int bearer_id,
}
/* Second link => redistribute slots */
- if (nl->priority > ol->priority) {
- pr_debug("Old link <%s> becomes standby\n", ol->name);
+ if (tipc_link_prio(nl) > tipc_link_prio(ol)) {
+ pr_debug("Old link <%s> becomes standby\n", tipc_link_name(ol));
*slot0 = bearer_id;
*slot1 = bearer_id;
tipc_link_set_active(nl, true);
tipc_link_set_active(ol, false);
- } else if (nl->priority == ol->priority) {
+ } else if (tipc_link_prio(nl) == tipc_link_prio(ol)) {
tipc_link_set_active(nl, true);
*slot1 = bearer_id;
} else {
- pr_debug("New link <%s> is standby\n", nl->name);
+ pr_debug("New link <%s> is standby\n", tipc_link_name(nl));
}
/* Prepare synchronization with first link */
@@ -387,9 +604,9 @@ static void __tipc_node_link_up(struct tipc_node *n, int bearer_id,
static void tipc_node_link_up(struct tipc_node *n, int bearer_id,
struct sk_buff_head *xmitq)
{
- tipc_node_lock(n);
+ tipc_node_write_lock(n);
__tipc_node_link_up(n, bearer_id, xmitq);
- tipc_node_unlock(n);
+ tipc_node_write_unlock(n);
}
/**
@@ -402,7 +619,7 @@ static void __tipc_node_link_down(struct tipc_node *n, int *bearer_id,
struct tipc_link_entry *le = &n->links[*bearer_id];
int *slot0 = &n->active_links[0];
int *slot1 = &n->active_links[1];
- int i, highest = 0;
+ int i, highest = 0, prio;
struct tipc_link *l, *_l, *tnl;
l = n->links[*bearer_id].link;
@@ -411,12 +628,12 @@ static void __tipc_node_link_down(struct tipc_node *n, int *bearer_id,
n->working_links--;
n->action_flags |= TIPC_NOTIFY_LINK_DOWN;
- n->link_id = l->peer_bearer_id << 16 | *bearer_id;
+ n->link_id = tipc_link_id(l);
tipc_bearer_remove_dest(n->net, *bearer_id, n->addr);
pr_debug("Lost link <%s> on network plane %c\n",
- l->name, l->net_plane);
+ tipc_link_name(l), tipc_link_plane(l));
/* Select new active link if any available */
*slot0 = INVALID_BEARER_ID;
@@ -427,10 +644,11 @@ static void __tipc_node_link_down(struct tipc_node *n, int *bearer_id,
continue;
if (_l == l)
continue;
- if (_l->priority < highest)
+ prio = tipc_link_prio(_l);
+ if (prio < highest)
continue;
- if (_l->priority > highest) {
- highest = _l->priority;
+ if (prio > highest) {
+ highest = prio;
*slot0 = i;
*slot1 = i;
continue;
@@ -453,17 +671,17 @@ static void __tipc_node_link_down(struct tipc_node *n, int *bearer_id,
tipc_bcast_dec_bearer_dst_cnt(n->net, *bearer_id);
/* There is still a working link => initiate failover */
- tnl = node_active_link(n, 0);
+ *bearer_id = n->active_links[0];
+ tnl = n->links[*bearer_id].link;
tipc_link_fsm_evt(tnl, LINK_SYNCH_END_EVT);
tipc_node_fsm_evt(n, NODE_SYNCH_END_EVT);
- n->sync_point = tnl->rcv_nxt + (U16_MAX / 2 - 1);
+ n->sync_point = tipc_link_rcv_nxt(tnl) + (U16_MAX / 2 - 1);
tipc_link_tnl_prepare(l, tnl, FAILOVER_MSG, xmitq);
tipc_link_reset(l);
tipc_link_fsm_evt(l, LINK_RESET_EVT);
tipc_link_fsm_evt(l, LINK_FAILOVER_BEGIN_EVT);
tipc_node_fsm_evt(n, NODE_FAILOVER_BEGIN_EVT);
- *maddr = &n->links[tnl->bearer_id].maddr;
- *bearer_id = tnl->bearer_id;
+ *maddr = &n->links[*bearer_id].maddr;
}
static void tipc_node_link_down(struct tipc_node *n, int bearer_id, bool delete)
@@ -478,7 +696,7 @@ static void tipc_node_link_down(struct tipc_node *n, int bearer_id, bool delete)
__skb_queue_head_init(&xmitq);
- tipc_node_lock(n);
+ tipc_node_write_lock(n);
if (!tipc_link_is_establishing(l)) {
__tipc_node_link_down(n, &bearer_id, &xmitq, &maddr);
if (delete) {
@@ -490,12 +708,12 @@ static void tipc_node_link_down(struct tipc_node *n, int bearer_id, bool delete)
/* Defuse pending tipc_node_link_up() */
tipc_link_fsm_evt(l, LINK_RESET_EVT);
}
- tipc_node_unlock(n);
+ tipc_node_write_unlock(n);
tipc_bearer_xmit(n->net, bearer_id, &xmitq, maddr);
tipc_sk_rcv(n->net, &le->inputq);
}
-bool tipc_node_is_up(struct tipc_node *n)
+static bool tipc_node_is_up(struct tipc_node *n)
{
return n->active_links[0] != INVALID_BEARER_ID;
}
@@ -523,7 +741,7 @@ void tipc_node_check_dest(struct net *net, u32 onode,
if (!n)
return;
- tipc_node_lock(n);
+ tipc_node_write_lock(n);
le = &n->links[b->identity];
@@ -626,7 +844,7 @@ void tipc_node_check_dest(struct net *net, u32 onode,
}
memcpy(&le->maddr, maddr, sizeof(*maddr));
exit:
- tipc_node_unlock(n);
+ tipc_node_write_unlock(n);
if (reset && !tipc_link_is_reset(l))
tipc_node_link_down(n, b->identity, false);
tipc_node_put(n);
@@ -834,24 +1052,6 @@ illegal_evt:
pr_err("Illegal node fsm evt %x in state %x\n", evt, state);
}
-bool tipc_node_filter_pkt(struct tipc_node *n, struct tipc_msg *hdr)
-{
- int state = n->state;
-
- if (likely(state == SELF_UP_PEER_UP))
- return true;
-
- if (state == SELF_LEAVING_PEER_DOWN)
- return false;
-
- if (state == SELF_DOWN_PEER_LEAVING) {
- if (msg_peer_node_is_up(hdr))
- return false;
- }
-
- return true;
-}
-
static void node_lost_contact(struct tipc_node *n,
struct sk_buff_head *inputq)
{
@@ -913,56 +1113,18 @@ int tipc_node_get_linkname(struct net *net, u32 bearer_id, u32 addr,
if (bearer_id >= MAX_BEARERS)
goto exit;
- tipc_node_lock(node);
+ tipc_node_read_lock(node);
link = node->links[bearer_id].link;
if (link) {
- strncpy(linkname, link->name, len);
+ strncpy(linkname, tipc_link_name(link), len);
err = 0;
}
exit:
- tipc_node_unlock(node);
+ tipc_node_read_unlock(node);
tipc_node_put(node);
return err;
}
-void tipc_node_unlock(struct tipc_node *node)
-{
- struct net *net = node->net;
- u32 addr = 0;
- u32 flags = node->action_flags;
- u32 link_id = 0;
- struct list_head *publ_list;
-
- if (likely(!flags)) {
- spin_unlock_bh(&node->lock);
- return;
- }
-
- addr = node->addr;
- link_id = node->link_id;
- publ_list = &node->publ_list;
-
- node->action_flags &= ~(TIPC_NOTIFY_NODE_DOWN | TIPC_NOTIFY_NODE_UP |
- TIPC_NOTIFY_LINK_DOWN | TIPC_NOTIFY_LINK_UP);
-
- spin_unlock_bh(&node->lock);
-
- if (flags & TIPC_NOTIFY_NODE_DOWN)
- tipc_publ_notify(net, publ_list, addr);
-
- if (flags & TIPC_NOTIFY_NODE_UP)
- tipc_named_node_up(net, addr);
-
- if (flags & TIPC_NOTIFY_LINK_UP)
- tipc_nametbl_publish(net, TIPC_LINK_STATE, addr, addr,
- TIPC_NODE_SCOPE, link_id, addr);
-
- if (flags & TIPC_NOTIFY_LINK_DOWN)
- tipc_nametbl_withdraw(net, TIPC_LINK_STATE, addr,
- link_id, addr);
-
-}
-
/* Caller should hold node lock for the passed node */
static int __tipc_nl_add_node(struct tipc_nl_msg *msg, struct tipc_node *node)
{
@@ -997,20 +1159,6 @@ msg_full:
return -EMSGSIZE;
}
-static struct tipc_link *tipc_node_select_link(struct tipc_node *n, int sel,
- int *bearer_id,
- struct tipc_media_addr **maddr)
-{
- int id = n->active_links[sel & 1];
-
- if (unlikely(id < 0))
- return NULL;
-
- *bearer_id = id;
- *maddr = &n->links[id].maddr;
- return n->links[id].link;
-}
-
/**
* tipc_node_xmit() is the general link level function for message sending
* @net: the applicable net namespace
@@ -1023,29 +1171,32 @@ static struct tipc_link *tipc_node_select_link(struct tipc_node *n, int sel,
int tipc_node_xmit(struct net *net, struct sk_buff_head *list,
u32 dnode, int selector)
{
- struct tipc_link *l = NULL;
+ struct tipc_link_entry *le = NULL;
struct tipc_node *n;
struct sk_buff_head xmitq;
- struct tipc_media_addr *maddr;
- int bearer_id;
+ int bearer_id = -1;
int rc = -EHOSTUNREACH;
__skb_queue_head_init(&xmitq);
n = tipc_node_find(net, dnode);
if (likely(n)) {
- tipc_node_lock(n);
- l = tipc_node_select_link(n, selector, &bearer_id, &maddr);
- if (likely(l))
- rc = tipc_link_xmit(l, list, &xmitq);
- tipc_node_unlock(n);
- if (unlikely(rc == -ENOBUFS))
+ tipc_node_read_lock(n);
+ bearer_id = n->active_links[selector & 1];
+ if (bearer_id >= 0) {
+ le = &n->links[bearer_id];
+ spin_lock_bh(&le->lock);
+ rc = tipc_link_xmit(le->link, list, &xmitq);
+ spin_unlock_bh(&le->lock);
+ }
+ tipc_node_read_unlock(n);
+ if (likely(!rc))
+ tipc_bearer_xmit(net, bearer_id, &xmitq, &le->maddr);
+ else if (rc == -ENOBUFS)
tipc_node_link_down(n, bearer_id, false);
tipc_node_put(n);
+ return rc;
}
- if (likely(!rc)) {
- tipc_bearer_xmit(net, bearer_id, &xmitq, maddr);
- return 0;
- }
+
if (likely(in_own_node(net, dnode))) {
tipc_sk_rcv(net, list);
return 0;
@@ -1075,6 +1226,30 @@ int tipc_node_xmit_skb(struct net *net, struct sk_buff *skb, u32 dnode,
return 0;
}
+void tipc_node_broadcast(struct net *net, struct sk_buff *skb)
+{
+ struct sk_buff *txskb;
+ struct tipc_node *n;
+ u32 dst;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(n, tipc_nodes(net), list) {
+ dst = n->addr;
+ if (in_own_node(net, dst))
+ continue;
+ if (!tipc_node_is_up(n))
+ continue;
+ txskb = pskb_copy(skb, GFP_ATOMIC);
+ if (!txskb)
+ break;
+ msg_set_destnode(buf_msg(txskb), dst);
+ tipc_node_xmit_skb(net, txskb, dst, 0);
+ }
+ rcu_read_unlock();
+
+ kfree_skb(skb);
+}
+
/**
* tipc_node_bc_rcv - process TIPC broadcast packet arriving from off-node
* @net: the applicable net namespace
@@ -1116,9 +1291,9 @@ static void tipc_node_bc_rcv(struct net *net, struct sk_buff *skb, int bearer_id
/* Broadcast ACKs are sent on a unicast link */
if (rc & TIPC_LINK_SND_BC_ACK) {
- tipc_node_lock(n);
+ tipc_node_read_lock(n);
tipc_link_build_ack_msg(le->link, &xmitq);
- tipc_node_unlock(n);
+ tipc_node_read_unlock(n);
}
if (!skb_queue_empty(&xmitq))
@@ -1151,30 +1326,30 @@ static bool tipc_node_check_state(struct tipc_node *n, struct sk_buff *skb,
u16 oseqno = msg_seqno(hdr);
u16 iseqno = msg_seqno(msg_get_wrapped(hdr));
u16 exp_pkts = msg_msgcnt(hdr);
- u16 rcv_nxt, syncpt, dlv_nxt;
+ u16 rcv_nxt, syncpt, dlv_nxt, inputq_len;
int state = n->state;
struct tipc_link *l, *tnl, *pl = NULL;
struct tipc_media_addr *maddr;
- int i, pb_id;
+ int pb_id;
l = n->links[bearer_id].link;
if (!l)
return false;
- rcv_nxt = l->rcv_nxt;
+ rcv_nxt = tipc_link_rcv_nxt(l);
if (likely((state == SELF_UP_PEER_UP) && (usr != TUNNEL_PROTOCOL)))
return true;
/* Find parallel link, if any */
- for (i = 0; i < MAX_BEARERS; i++) {
- if ((i != bearer_id) && n->links[i].link) {
- pl = n->links[i].link;
+ for (pb_id = 0; pb_id < MAX_BEARERS; pb_id++) {
+ if ((pb_id != bearer_id) && n->links[pb_id].link) {
+ pl = n->links[pb_id].link;
break;
}
}
- /* Update node accesibility if applicable */
+ /* Check and update node accesibility if applicable */
if (state == SELF_UP_PEER_COMING) {
if (!tipc_link_is_up(l))
return true;
@@ -1187,8 +1362,12 @@ static bool tipc_node_check_state(struct tipc_node *n, struct sk_buff *skb,
if (msg_peer_node_is_up(hdr))
return false;
tipc_node_fsm_evt(n, PEER_LOST_CONTACT_EVT);
+ return true;
}
+ if (state == SELF_LEAVING_PEER_DOWN)
+ return false;
+
/* Ignore duplicate packets */
if ((usr != LINK_PROTOCOL) && less(oseqno, rcv_nxt))
return true;
@@ -1197,9 +1376,9 @@ static bool tipc_node_check_state(struct tipc_node *n, struct sk_buff *skb,
if ((usr == TUNNEL_PROTOCOL) && (mtyp == FAILOVER_MSG)) {
syncpt = oseqno + exp_pkts - 1;
if (pl && tipc_link_is_up(pl)) {
- pb_id = pl->bearer_id;
__tipc_node_link_down(n, &pb_id, xmitq, &maddr);
- tipc_skb_queue_splice_tail_init(pl->inputq, l->inputq);
+ tipc_skb_queue_splice_tail_init(tipc_link_inputq(pl),
+ tipc_link_inputq(l));
}
/* If pkts arrive out of order, use lowest calculated syncpt */
if (less(syncpt, n->sync_point))
@@ -1232,19 +1411,18 @@ static bool tipc_node_check_state(struct tipc_node *n, struct sk_buff *skb,
tipc_link_fsm_evt(l, LINK_SYNCH_BEGIN_EVT);
tipc_node_fsm_evt(n, NODE_SYNCH_BEGIN_EVT);
}
- if (less(syncpt, n->sync_point))
- n->sync_point = syncpt;
}
/* Open tunnel link when parallel link reaches synch point */
- if ((n->state == NODE_SYNCHING) && tipc_link_is_synching(l)) {
+ if (n->state == NODE_SYNCHING) {
if (tipc_link_is_synching(l)) {
tnl = l;
} else {
tnl = pl;
pl = l;
}
- dlv_nxt = pl->rcv_nxt - mod(skb_queue_len(pl->inputq));
+ inputq_len = skb_queue_len(tipc_link_inputq(pl));
+ dlv_nxt = tipc_link_rcv_nxt(pl) - inputq_len;
if (more(dlv_nxt, n->sync_point)) {
tipc_link_fsm_evt(tnl, LINK_SYNCH_END_EVT);
tipc_node_fsm_evt(n, NODE_SYNCH_END_EVT);
@@ -1304,22 +1482,32 @@ void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b)
/* Ensure broadcast reception is in synch with peer's send state */
if (unlikely(usr == LINK_PROTOCOL))
tipc_bcast_sync_rcv(net, n->bc_entry.link, hdr);
- else if (unlikely(n->bc_entry.link->acked != bc_ack))
+ else if (unlikely(tipc_link_acked(n->bc_entry.link) != bc_ack))
tipc_bcast_ack_rcv(net, n->bc_entry.link, bc_ack);
- tipc_node_lock(n);
-
- /* Is reception permitted at the moment ? */
- if (!tipc_node_filter_pkt(n, hdr))
- goto unlock;
-
- /* Check and if necessary update node state */
- if (likely(tipc_node_check_state(n, skb, bearer_id, &xmitq))) {
- rc = tipc_link_rcv(le->link, skb, &xmitq);
- skb = NULL;
+ /* Receive packet directly if conditions permit */
+ tipc_node_read_lock(n);
+ if (likely((n->state == SELF_UP_PEER_UP) && (usr != TUNNEL_PROTOCOL))) {
+ spin_lock_bh(&le->lock);
+ if (le->link) {
+ rc = tipc_link_rcv(le->link, skb, &xmitq);
+ skb = NULL;
+ }
+ spin_unlock_bh(&le->lock);
+ }
+ tipc_node_read_unlock(n);
+
+ /* Check/update node state before receiving */
+ if (unlikely(skb)) {
+ tipc_node_write_lock(n);
+ if (tipc_node_check_state(n, skb, bearer_id, &xmitq)) {
+ if (le->link) {
+ rc = tipc_link_rcv(le->link, skb, &xmitq);
+ skb = NULL;
+ }
+ }
+ tipc_node_write_unlock(n);
}
-unlock:
- tipc_node_unlock(n);
if (unlikely(rc & TIPC_LINK_UP_EVT))
tipc_node_link_up(n, bearer_id, &xmitq);
@@ -1384,15 +1572,15 @@ int tipc_nl_node_dump(struct sk_buff *skb, struct netlink_callback *cb)
continue;
}
- tipc_node_lock(node);
+ tipc_node_read_lock(node);
err = __tipc_nl_add_node(&msg, node);
if (err) {
last_addr = node->addr;
- tipc_node_unlock(node);
+ tipc_node_read_unlock(node);
goto out;
}
- tipc_node_unlock(node);
+ tipc_node_read_unlock(node);
}
done = 1;
out:
@@ -1402,3 +1590,314 @@ out:
return skb->len;
}
+
+/* tipc_node_find_by_name - locate owner node of link by link's name
+ * @net: the applicable net namespace
+ * @name: pointer to link name string
+ * @bearer_id: pointer to index in 'node->links' array where the link was found.
+ *
+ * Returns pointer to node owning the link, or 0 if no matching link is found.
+ */
+static struct tipc_node *tipc_node_find_by_name(struct net *net,
+ const char *link_name,
+ unsigned int *bearer_id)
+{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
+ struct tipc_link *l;
+ struct tipc_node *n;
+ struct tipc_node *found_node = NULL;
+ int i;
+
+ *bearer_id = 0;
+ rcu_read_lock();
+ list_for_each_entry_rcu(n, &tn->node_list, list) {
+ tipc_node_read_lock(n);
+ for (i = 0; i < MAX_BEARERS; i++) {
+ l = n->links[i].link;
+ if (l && !strcmp(tipc_link_name(l), link_name)) {
+ *bearer_id = i;
+ found_node = n;
+ break;
+ }
+ }
+ tipc_node_read_unlock(n);
+ if (found_node)
+ break;
+ }
+ rcu_read_unlock();
+
+ return found_node;
+}
+
+int tipc_nl_node_set_link(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+ int res = 0;
+ int bearer_id;
+ char *name;
+ struct tipc_link *link;
+ struct tipc_node *node;
+ struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1];
+ struct net *net = sock_net(skb->sk);
+
+ if (!info->attrs[TIPC_NLA_LINK])
+ return -EINVAL;
+
+ err = nla_parse_nested(attrs, TIPC_NLA_LINK_MAX,
+ info->attrs[TIPC_NLA_LINK],
+ tipc_nl_link_policy);
+ if (err)
+ return err;
+
+ if (!attrs[TIPC_NLA_LINK_NAME])
+ return -EINVAL;
+
+ name = nla_data(attrs[TIPC_NLA_LINK_NAME]);
+
+ if (strcmp(name, tipc_bclink_name) == 0)
+ return tipc_nl_bc_link_set(net, attrs);
+
+ node = tipc_node_find_by_name(net, name, &bearer_id);
+ if (!node)
+ return -EINVAL;
+
+ tipc_node_read_lock(node);
+
+ link = node->links[bearer_id].link;
+ if (!link) {
+ res = -EINVAL;
+ goto out;
+ }
+
+ if (attrs[TIPC_NLA_LINK_PROP]) {
+ struct nlattr *props[TIPC_NLA_PROP_MAX + 1];
+
+ err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_LINK_PROP],
+ props);
+ if (err) {
+ res = err;
+ goto out;
+ }
+
+ if (props[TIPC_NLA_PROP_TOL]) {
+ u32 tol;
+
+ tol = nla_get_u32(props[TIPC_NLA_PROP_TOL]);
+ tipc_link_set_tolerance(link, tol);
+ }
+ if (props[TIPC_NLA_PROP_PRIO]) {
+ u32 prio;
+
+ prio = nla_get_u32(props[TIPC_NLA_PROP_PRIO]);
+ tipc_link_set_prio(link, prio);
+ }
+ if (props[TIPC_NLA_PROP_WIN]) {
+ u32 win;
+
+ win = nla_get_u32(props[TIPC_NLA_PROP_WIN]);
+ tipc_link_set_queue_limits(link, win);
+ }
+ }
+
+out:
+ tipc_node_read_unlock(node);
+
+ return res;
+}
+
+int tipc_nl_node_get_link(struct sk_buff *skb, struct genl_info *info)
+{
+ struct net *net = genl_info_net(info);
+ struct tipc_nl_msg msg;
+ char *name;
+ int err;
+
+ msg.portid = info->snd_portid;
+ msg.seq = info->snd_seq;
+
+ if (!info->attrs[TIPC_NLA_LINK_NAME])
+ return -EINVAL;
+ name = nla_data(info->attrs[TIPC_NLA_LINK_NAME]);
+
+ msg.skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!msg.skb)
+ return -ENOMEM;
+
+ if (strcmp(name, tipc_bclink_name) == 0) {
+ err = tipc_nl_add_bc_link(net, &msg);
+ if (err) {
+ nlmsg_free(msg.skb);
+ return err;
+ }
+ } else {
+ int bearer_id;
+ struct tipc_node *node;
+ struct tipc_link *link;
+
+ node = tipc_node_find_by_name(net, name, &bearer_id);
+ if (!node)
+ return -EINVAL;
+
+ tipc_node_read_lock(node);
+ link = node->links[bearer_id].link;
+ if (!link) {
+ tipc_node_read_unlock(node);
+ nlmsg_free(msg.skb);
+ return -EINVAL;
+ }
+
+ err = __tipc_nl_add_link(net, &msg, link, 0);
+ tipc_node_read_unlock(node);
+ if (err) {
+ nlmsg_free(msg.skb);
+ return err;
+ }
+ }
+
+ return genlmsg_reply(msg.skb, info);
+}
+
+int tipc_nl_node_reset_link_stats(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+ char *link_name;
+ unsigned int bearer_id;
+ struct tipc_link *link;
+ struct tipc_node *node;
+ struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1];
+ struct net *net = sock_net(skb->sk);
+ struct tipc_link_entry *le;
+
+ if (!info->attrs[TIPC_NLA_LINK])
+ return -EINVAL;
+
+ err = nla_parse_nested(attrs, TIPC_NLA_LINK_MAX,
+ info->attrs[TIPC_NLA_LINK],
+ tipc_nl_link_policy);
+ if (err)
+ return err;
+
+ if (!attrs[TIPC_NLA_LINK_NAME])
+ return -EINVAL;
+
+ link_name = nla_data(attrs[TIPC_NLA_LINK_NAME]);
+
+ if (strcmp(link_name, tipc_bclink_name) == 0) {
+ err = tipc_bclink_reset_stats(net);
+ if (err)
+ return err;
+ return 0;
+ }
+
+ node = tipc_node_find_by_name(net, link_name, &bearer_id);
+ if (!node)
+ return -EINVAL;
+
+ le = &node->links[bearer_id];
+ tipc_node_read_lock(node);
+ spin_lock_bh(&le->lock);
+ link = node->links[bearer_id].link;
+ if (!link) {
+ spin_unlock_bh(&le->lock);
+ tipc_node_read_unlock(node);
+ return -EINVAL;
+ }
+ tipc_link_reset_stats(link);
+ spin_unlock_bh(&le->lock);
+ tipc_node_read_unlock(node);
+ return 0;
+}
+
+/* Caller should hold node lock */
+static int __tipc_nl_add_node_links(struct net *net, struct tipc_nl_msg *msg,
+ struct tipc_node *node, u32 *prev_link)
+{
+ u32 i;
+ int err;
+
+ for (i = *prev_link; i < MAX_BEARERS; i++) {
+ *prev_link = i;
+
+ if (!node->links[i].link)
+ continue;
+
+ err = __tipc_nl_add_link(net, msg,
+ node->links[i].link, NLM_F_MULTI);
+ if (err)
+ return err;
+ }
+ *prev_link = 0;
+
+ return 0;
+}
+
+int tipc_nl_node_dump_link(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ struct net *net = sock_net(skb->sk);
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
+ struct tipc_node *node;
+ struct tipc_nl_msg msg;
+ u32 prev_node = cb->args[0];
+ u32 prev_link = cb->args[1];
+ int done = cb->args[2];
+ int err;
+
+ if (done)
+ return 0;
+
+ msg.skb = skb;
+ msg.portid = NETLINK_CB(cb->skb).portid;
+ msg.seq = cb->nlh->nlmsg_seq;
+
+ rcu_read_lock();
+ if (prev_node) {
+ node = tipc_node_find(net, prev_node);
+ if (!node) {
+ /* We never set seq or call nl_dump_check_consistent()
+ * this means that setting prev_seq here will cause the
+ * consistence check to fail in the netlink callback
+ * handler. Resulting in the last NLMSG_DONE message
+ * having the NLM_F_DUMP_INTR flag set.
+ */
+ cb->prev_seq = 1;
+ goto out;
+ }
+ tipc_node_put(node);
+
+ list_for_each_entry_continue_rcu(node, &tn->node_list,
+ list) {
+ tipc_node_read_lock(node);
+ err = __tipc_nl_add_node_links(net, &msg, node,
+ &prev_link);
+ tipc_node_read_unlock(node);
+ if (err)
+ goto out;
+
+ prev_node = node->addr;
+ }
+ } else {
+ err = tipc_nl_add_bc_link(net, &msg);
+ if (err)
+ goto out;
+
+ list_for_each_entry_rcu(node, &tn->node_list, list) {
+ tipc_node_read_lock(node);
+ err = __tipc_nl_add_node_links(net, &msg, node,
+ &prev_link);
+ tipc_node_read_unlock(node);
+ if (err)
+ goto out;
+
+ prev_node = node->addr;
+ }
+ }
+ done = 1;
+out:
+ rcu_read_unlock();
+
+ cb->args[0] = prev_node;
+ cb->args[1] = prev_link;
+ cb->args[2] = done;
+
+ return skb->len;
+}
diff --git a/net/tipc/node.h b/net/tipc/node.h
index 6734562d3c6e..f39d9d06e8bb 100644
--- a/net/tipc/node.h
+++ b/net/tipc/node.h
@@ -42,23 +42,6 @@
#include "bearer.h"
#include "msg.h"
-/* Out-of-range value for node signature */
-#define INVALID_NODE_SIG 0x10000
-
-#define INVALID_BEARER_ID -1
-
-/* Flags used to take different actions according to flag type
- * TIPC_NOTIFY_NODE_DOWN: notify node is down
- * TIPC_NOTIFY_NODE_UP: notify node is up
- * TIPC_DISTRIBUTE_NAME: publish or withdraw link state name type
- */
-enum {
- TIPC_NOTIFY_NODE_DOWN = (1 << 3),
- TIPC_NOTIFY_NODE_UP = (1 << 4),
- TIPC_NOTIFY_LINK_UP = (1 << 6),
- TIPC_NOTIFY_LINK_DOWN = (1 << 7)
-};
-
/* Optional capabilities supported by this code version
*/
enum {
@@ -66,72 +49,8 @@ enum {
};
#define TIPC_NODE_CAPABILITIES TIPC_BCAST_SYNCH
+#define INVALID_BEARER_ID -1
-struct tipc_link_entry {
- struct tipc_link *link;
- u32 mtu;
- struct sk_buff_head inputq;
- struct tipc_media_addr maddr;
-};
-
-struct tipc_bclink_entry {
- struct tipc_link *link;
- struct sk_buff_head inputq1;
- struct sk_buff_head arrvq;
- struct sk_buff_head inputq2;
- struct sk_buff_head namedq;
-};
-
-/**
- * struct tipc_node - TIPC node structure
- * @addr: network address of node
- * @ref: reference counter to node object
- * @lock: spinlock governing access to structure
- * @net: the applicable net namespace
- * @hash: links to adjacent nodes in unsorted hash chain
- * @inputq: pointer to input queue containing messages for msg event
- * @namedq: pointer to name table input queue with name table messages
- * @active_links: bearer ids of active links, used as index into links[] array
- * @links: array containing references to all links to node
- * @action_flags: bit mask of different types of node actions
- * @state: connectivity state vs peer node
- * @sync_point: sequence number where synch/failover is finished
- * @list: links to adjacent nodes in sorted list of cluster's nodes
- * @working_links: number of working links to node (both active and standby)
- * @link_cnt: number of links to node
- * @capabilities: bitmap, indicating peer node's functional capabilities
- * @signature: node instance identifier
- * @link_id: local and remote bearer ids of changing link, if any
- * @publ_list: list of publications
- * @rcu: rcu struct for tipc_node
- */
-struct tipc_node {
- u32 addr;
- struct kref kref;
- spinlock_t lock;
- struct net *net;
- struct hlist_node hash;
- int active_links[2];
- struct tipc_link_entry links[MAX_BEARERS];
- struct tipc_bclink_entry bc_entry;
- int action_flags;
- struct list_head list;
- int state;
- u16 sync_point;
- int link_cnt;
- u16 working_links;
- u16 capabilities;
- u32 signature;
- u32 link_id;
- struct list_head publ_list;
- struct list_head conn_sks;
- unsigned long keepalive_intv;
- struct timer_list timer;
- struct rcu_head rcu;
-};
-
-struct tipc_node *tipc_node_find(struct net *net, u32 addr);
-void tipc_node_put(struct tipc_node *node);
void tipc_node_stop(struct net *net);
void tipc_node_check_dest(struct net *net, u32 onode,
struct tipc_bearer *bearer,
@@ -139,50 +58,22 @@ void tipc_node_check_dest(struct net *net, u32 onode,
struct tipc_media_addr *maddr,
bool *respond, bool *dupl_addr);
void tipc_node_delete_links(struct net *net, int bearer_id);
-void tipc_node_attach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
-void tipc_node_detach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
-bool tipc_node_is_up(struct tipc_node *n);
int tipc_node_get_linkname(struct net *net, u32 bearer_id, u32 node,
char *linkname, size_t len);
-void tipc_node_unlock(struct tipc_node *node);
int tipc_node_xmit(struct net *net, struct sk_buff_head *list, u32 dnode,
int selector);
int tipc_node_xmit_skb(struct net *net, struct sk_buff *skb, u32 dest,
u32 selector);
+void tipc_node_subscribe(struct net *net, struct list_head *subscr, u32 addr);
+void tipc_node_unsubscribe(struct net *net, struct list_head *subscr, u32 addr);
+void tipc_node_broadcast(struct net *net, struct sk_buff *skb);
int tipc_node_add_conn(struct net *net, u32 dnode, u32 port, u32 peer_port);
void tipc_node_remove_conn(struct net *net, u32 dnode, u32 port);
+int tipc_node_get_mtu(struct net *net, u32 addr, u32 sel);
int tipc_nl_node_dump(struct sk_buff *skb, struct netlink_callback *cb);
-
-static inline void tipc_node_lock(struct tipc_node *node)
-{
- spin_lock_bh(&node->lock);
-}
-
-static inline struct tipc_link *node_active_link(struct tipc_node *n, int sel)
-{
- int bearer_id = n->active_links[sel & 1];
-
- if (unlikely(bearer_id == INVALID_BEARER_ID))
- return NULL;
-
- return n->links[bearer_id].link;
-}
-
-static inline unsigned int tipc_node_get_mtu(struct net *net, u32 addr, u32 sel)
-{
- struct tipc_node *n;
- int bearer_id;
- unsigned int mtu = MAX_MSG_SIZE;
-
- n = tipc_node_find(net, addr);
- if (unlikely(!n))
- return mtu;
-
- bearer_id = n->active_links[sel & 1];
- if (likely(bearer_id != INVALID_BEARER_ID))
- mtu = n->links[bearer_id].mtu;
- tipc_node_put(n);
- return mtu;
-}
+int tipc_nl_node_dump_link(struct sk_buff *skb, struct netlink_callback *cb);
+int tipc_nl_node_reset_link_stats(struct sk_buff *skb, struct genl_info *info);
+int tipc_nl_node_get_link(struct sk_buff *skb, struct genl_info *info);
+int tipc_nl_node_set_link(struct sk_buff *skb, struct genl_info *info);
#endif
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index b53246fb0412..69c29050f14a 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -1491,7 +1491,7 @@ static void tipc_write_space(struct sock *sk)
rcu_read_lock();
wq = rcu_dereference(sk->sk_wq);
- if (wq_has_sleeper(wq))
+ if (skwq_has_sleeper(wq))
wake_up_interruptible_sync_poll(&wq->wait, POLLOUT |
POLLWRNORM | POLLWRBAND);
rcu_read_unlock();
@@ -1508,7 +1508,7 @@ static void tipc_data_ready(struct sock *sk)
rcu_read_lock();
wq = rcu_dereference(sk->sk_wq);
- if (wq_has_sleeper(wq))
+ if (skwq_has_sleeper(wq))
wake_up_interruptible_sync_poll(&wq->wait, POLLIN |
POLLRDNORM | POLLRDBAND);
rcu_read_unlock();
diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index 70c03271b798..d63a911e7fe2 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -48,7 +48,6 @@
#include <linux/tipc_netlink.h>
#include "core.h"
#include "bearer.h"
-#include "msg.h"
/* IANA assigned UDP port */
#define UDP_PORT_DEFAULT 6118
@@ -183,15 +182,9 @@ static int tipc_udp_send_msg(struct net *net, struct sk_buff *skb,
goto tx_error;
}
ttl = ip4_dst_hoplimit(&rt->dst);
- err = udp_tunnel_xmit_skb(rt, ub->ubsock->sk, skb,
- src->ipv4.s_addr,
- dst->ipv4.s_addr, 0, ttl, 0,
- src->udp_port, dst->udp_port,
- false, true);
- if (err < 0) {
- ip_rt_put(rt);
- goto tx_error;
- }
+ udp_tunnel_xmit_skb(rt, ub->ubsock->sk, skb, src->ipv4.s_addr,
+ dst->ipv4.s_addr, 0, ttl, 0, src->udp_port,
+ dst->udp_port, false, true);
#if IS_ENABLED(CONFIG_IPV6)
} else {
struct dst_entry *ndst;
@@ -224,10 +217,6 @@ static int tipc_udp_recv(struct sock *sk, struct sk_buff *skb)
{
struct udp_bearer *ub;
struct tipc_bearer *b;
- int usr = msg_user(buf_msg(skb));
-
- if ((usr == LINK_PROTOCOL) || (usr == NAME_DISTRIBUTOR))
- skb_linearize(skb);
ub = rcu_dereference_sk_user_data(sk);
if (!ub) {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.