diff options
Diffstat (limited to 'net/tipc/group.c')
| -rw-r--r-- | net/tipc/group.c | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/net/tipc/group.c b/net/tipc/group.c index b8ed70abba01..18440be5b5fc 100644 --- a/net/tipc/group.c +++ b/net/tipc/group.c @@ -186,6 +186,17 @@ struct tipc_member *tipc_group_find_member(struct tipc_group *grp, return NULL; } +static struct tipc_member *tipc_group_find_dest(struct tipc_group *grp, + u32 node, u32 port) +{ + struct tipc_member *m; + + m = tipc_group_find_member(grp, node, port); + if (m && tipc_group_is_enabled(m)) + return m; + return NULL; +} + static struct tipc_member *tipc_group_find_node(struct tipc_group *grp, u32 node) { @@ -318,9 +329,39 @@ void tipc_group_update_bc_members(struct tipc_group *grp, int len) grp->bc_snd_nxt++; } -bool tipc_group_bc_cong(struct tipc_group *grp, int len) +bool tipc_group_cong(struct tipc_group *grp, u32 dnode, u32 dport, + int len, struct tipc_member **mbr) { + struct sk_buff_head xmitq; struct tipc_member *m; + int adv, state; + + m = tipc_group_find_dest(grp, dnode, dport); + *mbr = m; + if (!m) + return false; + if (m->usr_pending) + return true; + if (m->window >= len) + return false; + m->usr_pending = true; + + /* If not fully advertised, do it now to prevent mutual blocking */ + adv = m->advertised; + state = m->state; + if (state < MBR_JOINED) + return true; + if (state == MBR_JOINED && adv == ADV_IDLE) + return true; + skb_queue_head_init(&xmitq); + tipc_group_proto_xmit(grp, m, GRP_ADV_MSG, &xmitq); + tipc_node_distr_xmit(grp->net, &xmitq); + return true; +} + +bool tipc_group_bc_cong(struct tipc_group *grp, int len) +{ + struct tipc_member *m = NULL; if (list_empty(&grp->congested)) return false; @@ -329,7 +370,7 @@ bool tipc_group_bc_cong(struct tipc_group *grp, int len) if (m->window >= len) return false; - return true; + return tipc_group_cong(grp, m->node, m->port, len, &m); } /* tipc_group_filter_msg() - determine if we should accept arriving message |