diff options
Diffstat (limited to 'net/tipc/name_table.c')
| -rw-r--r-- | net/tipc/name_table.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c index 114d72bab827..2856e19e036e 100644 --- a/net/tipc/name_table.c +++ b/net/tipc/name_table.c @@ -597,6 +597,47 @@ not_found: return ref; } +bool tipc_nametbl_lookup(struct net *net, u32 type, u32 instance, u32 domain, + struct list_head *dsts, int *dstcnt, u32 exclude, + bool all) +{ + u32 self = tipc_own_addr(net); + struct publication *publ; + struct name_info *info; + struct name_seq *seq; + struct sub_seq *sseq; + + if (!tipc_in_scope(domain, self)) + return false; + + *dstcnt = 0; + rcu_read_lock(); + seq = nametbl_find_seq(net, type); + if (unlikely(!seq)) + goto exit; + spin_lock_bh(&seq->lock); + sseq = nameseq_find_subseq(seq, instance); + if (likely(sseq)) { + info = sseq->info; + list_for_each_entry(publ, &info->zone_list, zone_list) { + if (!tipc_in_scope(domain, publ->node)) + continue; + if (publ->ref == exclude && publ->node == self) + continue; + tipc_dest_push(dsts, publ->node, publ->ref); + (*dstcnt)++; + if (all) + continue; + list_move_tail(&publ->zone_list, &info->zone_list); + break; + } + } + spin_unlock_bh(&seq->lock); +exit: + rcu_read_unlock(); + return !list_empty(dsts); +} + int tipc_nametbl_mc_translate(struct net *net, u32 type, u32 lower, u32 upper, u32 limit, struct list_head *dports) { |