diff options
Diffstat (limited to 'net/tipc/name_table.c')
| -rw-r--r-- | net/tipc/name_table.c | 51 |
1 files changed, 33 insertions, 18 deletions
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c index 5676b8d4f08f..22616a943e70 100644 --- a/net/tipc/name_table.c +++ b/net/tipc/name_table.c @@ -544,24 +544,26 @@ exit: } /** - * tipc_nametbl_translate - perform service instance to socket translation + * tipc_nametbl_lookup_anycast - perform service instance to socket translation * @net: network namespace * @type: message type * @instance: message instance * @dnode: the search domain used during translation * + * On entry, 'dnode' is the search domain used during the lookup + * * On exit: - * - if translation is deferred to another node, leave 'dnode' unchanged and - * return 0 - * - if translation is attempted and succeeds, set 'dnode' to the publishing - * node and return the published (non-zero) port number - * - if translation is attempted and fails, set 'dnode' to 0 and return 0 + * - if lookup is deferred to another node, leave 'dnode' unchanged and return 0 + * - if lookup is attempted and succeeds, set 'dnode' to the publishing node and + * return the published (non-zero) port number + * - if lookup is attempted and fails, set 'dnode' to 0 and return 0 * * Note that for legacy users (node configured with Z.C.N address format) the * 'closest-first' lookup algorithm must be maintained, i.e., if dnode is 0 * we must look in the local binding list first */ -u32 tipc_nametbl_translate(struct net *net, u32 type, u32 instance, u32 *dnode) +u32 tipc_nametbl_lookup_anycast(struct net *net, u32 type, + u32 instance, u32 *dnode) { struct tipc_net *tn = tipc_net(net); bool legacy = tn->legacy_addr_format; @@ -617,9 +619,15 @@ exit: return port; } -bool tipc_nametbl_lookup(struct net *net, u32 type, u32 instance, u32 scope, - struct list_head *dsts, int *dstcnt, u32 exclude, - bool all) +/* tipc_nametbl_lookup_group(): lookup destinaton(s) in a communication group + * Returns a list of one (== group anycast) or more (== group multicast) + * destination socket/node pairs matching the given address. + * The requester may or may not want to exclude himself from the list. + */ +bool tipc_nametbl_lookup_group(struct net *net, u32 type, u32 instance, + u32 scope, struct list_head *dsts, + int *dstcnt, u32 exclude, + bool mcast) { u32 self = tipc_own_addr(net); struct service_range *sr; @@ -646,7 +654,7 @@ bool tipc_nametbl_lookup(struct net *net, u32 type, u32 instance, u32 scope, continue; tipc_dest_push(dsts, p->sk.node, p->sk.ref); (*dstcnt)++; - if (all) + if (mcast) continue; list_move_tail(&p->all_publ, &sr->all_publ); break; @@ -658,8 +666,14 @@ exit: return !list_empty(dsts); } -void tipc_nametbl_mc_lookup(struct net *net, u32 type, u32 lower, u32 upper, - u32 scope, bool exact, struct list_head *dports) +/* tipc_nametbl_lookup_mcast_sockets(): look up node local destinaton sockets + * matching the given address + * Used on nodes which have received a multicast/broadcast message + * Returns a list of local sockets + */ +void tipc_nametbl_lookup_mcast_sockets(struct net *net, u32 type, u32 lower, + u32 upper, u32 scope, bool exact, + struct list_head *dports) { struct service_range *sr; struct tipc_service *sc; @@ -682,12 +696,13 @@ exit: rcu_read_unlock(); } -/* tipc_nametbl_lookup_dst_nodes - find broadcast destination nodes - * - Creates list of nodes that overlap the given multicast address - * - Determines if any node local destinations overlap +/* tipc_nametbl_lookup_mcast_nodes(): look up all destination nodes matching + * the given address. Used in sending node. + * Used on nodes which are sending out a multicast/broadcast message + * Returns a list of nodes, including own node if applicable */ -void tipc_nametbl_lookup_dst_nodes(struct net *net, u32 type, u32 lower, - u32 upper, struct tipc_nlist *nodes) +void tipc_nametbl_lookup_mcast_nodes(struct net *net, u32 type, u32 lower, + u32 upper, struct tipc_nlist *nodes) { struct service_range *sr; struct tipc_service *sc; |