diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/tipc/link.c | 3 | ||||
| -rw-r--r-- | net/tipc/node.c | 5 |
2 files changed, 6 insertions, 2 deletions
diff --git a/net/tipc/link.c b/net/tipc/link.c index 4ed650ce6e61..fb886b525d95 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -1516,6 +1516,9 @@ 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 */ diff --git a/net/tipc/node.c b/net/tipc/node.c index b0ee25f1f2e6..2afc4f8c37a7 100644 --- a/net/tipc/node.c +++ b/net/tipc/node.c @@ -913,6 +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; @@ -999,9 +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, @@ -1625,7 +1627,6 @@ static bool tipc_node_check_state(struct tipc_node *n, struct sk_buff *skb, 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; |