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-rw-r--r--net/tipc/bearer.c12
-rw-r--r--net/tipc/group.c1
-rw-r--r--net/tipc/link.c69
-rw-r--r--net/tipc/link.h3
-rw-r--r--net/tipc/name_distr.c4
-rw-r--r--net/tipc/node.c14
-rw-r--r--net/tipc/socket.c18
7 files changed, 104 insertions, 17 deletions
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 418f03d0be90..645c16052052 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -609,16 +609,18 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt,
switch (evt) {
case NETDEV_CHANGE:
- if (netif_carrier_ok(dev))
+ if (netif_carrier_ok(dev) && netif_oper_up(dev)) {
+ test_and_set_bit_lock(0, &b->up);
break;
- /* else: fall through */
- case NETDEV_UP:
- test_and_set_bit_lock(0, &b->up);
- break;
+ }
+ /* fall through */
case NETDEV_GOING_DOWN:
clear_bit_unlock(0, &b->up);
tipc_reset_bearer(net, b);
break;
+ case NETDEV_UP:
+ test_and_set_bit_lock(0, &b->up);
+ break;
case NETDEV_CHANGEMTU:
if (tipc_mtu_bad(dev, 0)) {
bearer_disable(net, b);
diff --git a/net/tipc/group.c b/net/tipc/group.c
index e82f13cb2dc5..06fee142f09f 100644
--- a/net/tipc/group.c
+++ b/net/tipc/group.c
@@ -666,6 +666,7 @@ static void tipc_group_create_event(struct tipc_group *grp,
struct sk_buff *skb;
struct tipc_msg *hdr;
+ memset(&evt, 0, sizeof(evt));
evt.event = event;
evt.found_lower = m->instance;
evt.found_upper = m->instance;
diff --git a/net/tipc/link.c b/net/tipc/link.c
index b1f0bee54eac..201c3b5bc96b 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -410,6 +410,11 @@ char *tipc_link_name(struct tipc_link *l)
return l->name;
}
+u32 tipc_link_state(struct tipc_link *l)
+{
+ return l->state;
+}
+
/**
* tipc_link_create - create a new link
* @n: pointer to associated node
@@ -472,6 +477,8 @@ bool tipc_link_create(struct net *net, char *if_name, int bearer_id,
l->in_session = false;
l->bearer_id = bearer_id;
l->tolerance = tolerance;
+ if (bc_rcvlink)
+ bc_rcvlink->tolerance = tolerance;
l->net_plane = net_plane;
l->advertised_mtu = mtu;
l->mtu = mtu;
@@ -838,12 +845,24 @@ static void link_prepare_wakeup(struct tipc_link *l)
void tipc_link_reset(struct tipc_link *l)
{
+ struct sk_buff_head list;
+
+ __skb_queue_head_init(&list);
+
l->in_session = false;
l->session++;
l->mtu = l->advertised_mtu;
+
+ spin_lock_bh(&l->wakeupq.lock);
+ skb_queue_splice_init(&l->wakeupq, &list);
+ spin_unlock_bh(&l->wakeupq.lock);
+
+ spin_lock_bh(&l->inputq->lock);
+ skb_queue_splice_init(&list, l->inputq);
+ spin_unlock_bh(&l->inputq->lock);
+
__skb_queue_purge(&l->transmq);
__skb_queue_purge(&l->deferdq);
- skb_queue_splice_init(&l->wakeupq, l->inputq);
__skb_queue_purge(&l->backlogq);
l->backlog[TIPC_LOW_IMPORTANCE].len = 0;
l->backlog[TIPC_MEDIUM_IMPORTANCE].len = 0;
@@ -1021,7 +1040,8 @@ static int tipc_link_retrans(struct tipc_link *l, struct tipc_link *r,
/* Detect repeated retransmit failures on same packet */
if (r->last_retransm != buf_seqno(skb)) {
r->last_retransm = buf_seqno(skb);
- r->stale_limit = jiffies + msecs_to_jiffies(l->tolerance);
+ r->stale_limit = jiffies + msecs_to_jiffies(r->tolerance);
+ r->stale_cnt = 0;
} else if (++r->stale_cnt > 99 && time_after(jiffies, r->stale_limit)) {
link_retransmit_failure(l, skb);
if (link_is_bc_sndlink(l))
@@ -1380,6 +1400,36 @@ static void tipc_link_build_proto_msg(struct tipc_link *l, int mtyp, bool probe,
__skb_queue_tail(xmitq, skb);
}
+void tipc_link_create_dummy_tnl_msg(struct tipc_link *l,
+ struct sk_buff_head *xmitq)
+{
+ u32 onode = tipc_own_addr(l->net);
+ struct tipc_msg *hdr, *ihdr;
+ struct sk_buff_head tnlq;
+ struct sk_buff *skb;
+ u32 dnode = l->addr;
+
+ skb_queue_head_init(&tnlq);
+ skb = tipc_msg_create(TUNNEL_PROTOCOL, FAILOVER_MSG,
+ INT_H_SIZE, BASIC_H_SIZE,
+ dnode, onode, 0, 0, 0);
+ if (!skb) {
+ pr_warn("%sunable to create tunnel packet\n", link_co_err);
+ return;
+ }
+
+ hdr = buf_msg(skb);
+ msg_set_msgcnt(hdr, 1);
+ msg_set_bearer_id(hdr, l->peer_bearer_id);
+
+ ihdr = (struct tipc_msg *)msg_data(hdr);
+ tipc_msg_init(onode, ihdr, TIPC_LOW_IMPORTANCE, TIPC_DIRECT_MSG,
+ BASIC_H_SIZE, dnode);
+ msg_set_errcode(ihdr, TIPC_ERR_NO_PORT);
+ __skb_queue_tail(&tnlq, skb);
+ tipc_link_xmit(l, &tnlq, xmitq);
+}
+
/* tipc_link_tnl_prepare(): prepare and return a list of tunnel packets
* with contents of the link's transmit and backlog queues.
*/
@@ -1476,6 +1526,9 @@ bool tipc_link_validate_msg(struct tipc_link *l, struct tipc_msg *hdr)
return false;
if (session != curr_session)
return false;
+ /* Extra sanity check */
+ if (!link_is_up(l) && msg_ack(hdr))
+ return false;
if (!(l->peer_caps & TIPC_LINK_PROTO_SEQNO))
return true;
/* Accept only STATE with new sequence number */
@@ -1533,9 +1586,10 @@ static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb,
strncpy(if_name, data, TIPC_MAX_IF_NAME);
/* Update own tolerance if peer indicates a non-zero value */
- if (in_range(peers_tol, TIPC_MIN_LINK_TOL, TIPC_MAX_LINK_TOL))
+ if (in_range(peers_tol, TIPC_MIN_LINK_TOL, TIPC_MAX_LINK_TOL)) {
l->tolerance = peers_tol;
-
+ l->bc_rcvlink->tolerance = peers_tol;
+ }
/* Update own priority if peer's priority is higher */
if (in_range(peers_prio, l->priority + 1, TIPC_MAX_LINK_PRI))
l->priority = peers_prio;
@@ -1561,9 +1615,10 @@ static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb,
l->rcv_nxt_state = msg_seqno(hdr) + 1;
/* Update own tolerance if peer indicates a non-zero value */
- if (in_range(peers_tol, TIPC_MIN_LINK_TOL, TIPC_MAX_LINK_TOL))
+ if (in_range(peers_tol, TIPC_MIN_LINK_TOL, TIPC_MAX_LINK_TOL)) {
l->tolerance = peers_tol;
-
+ l->bc_rcvlink->tolerance = peers_tol;
+ }
/* Update own prio if peer indicates a different value */
if ((peers_prio != l->priority) &&
in_range(peers_prio, 1, TIPC_MAX_LINK_PRI)) {
@@ -2180,6 +2235,8 @@ void tipc_link_set_tolerance(struct tipc_link *l, u32 tol,
struct sk_buff_head *xmitq)
{
l->tolerance = tol;
+ if (l->bc_rcvlink)
+ l->bc_rcvlink->tolerance = tol;
if (link_is_up(l))
tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, tol, 0, xmitq);
}
diff --git a/net/tipc/link.h b/net/tipc/link.h
index 7bc494a33fdf..90488c538a4e 100644
--- a/net/tipc/link.h
+++ b/net/tipc/link.h
@@ -88,6 +88,8 @@ bool tipc_link_bc_create(struct net *net, u32 ownnode, u32 peer,
struct tipc_link **link);
void tipc_link_tnl_prepare(struct tipc_link *l, struct tipc_link *tnl,
int mtyp, struct sk_buff_head *xmitq);
+void tipc_link_create_dummy_tnl_msg(struct tipc_link *tnl,
+ 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);
bool tipc_link_is_up(struct tipc_link *l);
@@ -107,6 +109,7 @@ 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);
+u32 tipc_link_state(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);
diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c
index 51b4b96f89db..3cfeb9df64b0 100644
--- a/net/tipc/name_distr.c
+++ b/net/tipc/name_distr.c
@@ -115,7 +115,7 @@ struct sk_buff *tipc_named_withdraw(struct net *net, struct publication *publ)
struct sk_buff *buf;
struct distr_item *item;
- list_del(&publ->binding_node);
+ list_del_rcu(&publ->binding_node);
if (publ->scope == TIPC_NODE_SCOPE)
return NULL;
@@ -147,7 +147,7 @@ static void named_distribute(struct net *net, struct sk_buff_head *list,
ITEM_SIZE) * ITEM_SIZE;
u32 msg_rem = msg_dsz;
- list_for_each_entry(publ, pls, binding_node) {
+ list_for_each_entry_rcu(publ, pls, binding_node) {
/* Prepare next buffer: */
if (!skb) {
skb = named_prepare_buf(net, PUBLICATION, msg_rem,
diff --git a/net/tipc/node.c b/net/tipc/node.c
index 68014f1b6976..2afc4f8c37a7 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -111,6 +111,7 @@ struct tipc_node {
int action_flags;
struct list_head list;
int state;
+ bool failover_sent;
u16 sync_point;
int link_cnt;
u16 working_links;
@@ -680,6 +681,7 @@ static void __tipc_node_link_up(struct tipc_node *n, int bearer_id,
*slot0 = bearer_id;
*slot1 = bearer_id;
tipc_node_fsm_evt(n, SELF_ESTABL_CONTACT_EVT);
+ n->failover_sent = false;
n->action_flags |= TIPC_NOTIFY_NODE_UP;
tipc_link_set_active(nl, true);
tipc_bcast_add_peer(n->net, nl, xmitq);
@@ -911,6 +913,7 @@ void tipc_node_check_dest(struct net *net, u32 addr,
bool reset = true;
char *if_name;
unsigned long intv;
+ u16 session;
*dupl_addr = false;
*respond = false;
@@ -997,9 +1000,10 @@ void tipc_node_check_dest(struct net *net, u32 addr,
goto exit;
if_name = strchr(b->name, ':') + 1;
+ get_random_bytes(&session, sizeof(u16));
if (!tipc_link_create(net, if_name, b->identity, b->tolerance,
b->net_plane, b->mtu, b->priority,
- b->window, mod(tipc_net(net)->random),
+ b->window, session,
tipc_own_addr(net), addr, peer_id,
n->capabilities,
tipc_bc_sndlink(n->net), n->bc_entry.link,
@@ -1615,6 +1619,14 @@ static bool tipc_node_check_state(struct tipc_node *n, struct sk_buff *skb,
tipc_skb_queue_splice_tail_init(tipc_link_inputq(pl),
tipc_link_inputq(l));
}
+ /* If parallel link was already down, and this happened before
+ * the tunnel link came up, FAILOVER was never sent. Ensure that
+ * FAILOVER is sent to get peer out of NODE_FAILINGOVER state.
+ */
+ if (n->state != NODE_FAILINGOVER && !n->failover_sent) {
+ tipc_link_create_dummy_tnl_msg(l, xmitq);
+ n->failover_sent = true;
+ }
/* If pkts arrive out of order, use lowest calculated syncpt */
if (less(syncpt, n->sync_point))
n->sync_point = syncpt;
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 3f03ddd0e35b..49810fdff4c5 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -1196,6 +1196,7 @@ void tipc_sk_mcast_rcv(struct net *net, struct sk_buff_head *arrvq,
* @skb: pointer to message buffer.
*/
static void tipc_sk_conn_proto_rcv(struct tipc_sock *tsk, struct sk_buff *skb,
+ struct sk_buff_head *inputq,
struct sk_buff_head *xmitq)
{
struct tipc_msg *hdr = buf_msg(skb);
@@ -1213,7 +1214,16 @@ static void tipc_sk_conn_proto_rcv(struct tipc_sock *tsk, struct sk_buff *skb,
tipc_node_remove_conn(sock_net(sk), tsk_peer_node(tsk),
tsk_peer_port(tsk));
sk->sk_state_change(sk);
- goto exit;
+
+ /* State change is ignored if socket already awake,
+ * - convert msg to abort msg and add to inqueue
+ */
+ msg_set_user(hdr, TIPC_CRITICAL_IMPORTANCE);
+ msg_set_type(hdr, TIPC_CONN_MSG);
+ msg_set_size(hdr, BASIC_H_SIZE);
+ msg_set_hdr_sz(hdr, BASIC_H_SIZE);
+ __skb_queue_tail(inputq, skb);
+ return;
}
tsk->probe_unacked = false;
@@ -1419,8 +1429,10 @@ static int __tipc_sendstream(struct socket *sock, struct msghdr *m, size_t dlen)
/* Handle implicit connection setup */
if (unlikely(dest)) {
rc = __tipc_sendmsg(sock, m, dlen);
- if (dlen && (dlen == rc))
+ if (dlen && dlen == rc) {
+ tsk->peer_caps = tipc_node_get_capabilities(net, dnode);
tsk->snt_unacked = tsk_inc(tsk, dlen + msg_hdr_sz(hdr));
+ }
return rc;
}
@@ -1934,7 +1946,7 @@ static void tipc_sk_proto_rcv(struct sock *sk,
switch (msg_user(hdr)) {
case CONN_MANAGER:
- tipc_sk_conn_proto_rcv(tsk, skb, xmitq);
+ tipc_sk_conn_proto_rcv(tsk, skb, inputq, xmitq);
return;
case SOCK_WAKEUP:
tipc_dest_del(&tsk->cong_links, msg_orignode(hdr), 0);
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