diff options
| -rw-r--r-- | net/tipc/bcast.c | 12 | ||||
| -rw-r--r-- | net/tipc/bearer.c | 15 | ||||
| -rw-r--r-- | net/tipc/bearer.h | 8 | ||||
| -rw-r--r-- | net/tipc/udp_media.c | 8 |
4 files changed, 34 insertions, 9 deletions
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c index c35fad3e08e8..325627612bac 100644 --- a/net/tipc/bcast.c +++ b/net/tipc/bcast.c @@ -1,7 +1,7 @@ /* * net/tipc/bcast.c: TIPC broadcast code * - * Copyright (c) 2004-2006, 2014-2015, Ericsson AB + * Copyright (c) 2004-2006, 2014-2016, Ericsson AB * Copyright (c) 2004, Intel Corporation. * Copyright (c) 2005, 2010-2011, Wind River Systems * All rights reserved. @@ -54,12 +54,14 @@ const char tipc_bclink_name[] = "broadcast-link"; * @inputq: data input queue; will only carry SOCK_WAKEUP messages * @dest: array keeping number of reachable destinations per bearer * @primary_bearer: a bearer having links to all broadcast destinations, if any + * @bcast_support: indicates if primary bearer, if any, supports broadcast */ struct tipc_bc_base { struct tipc_link *link; struct sk_buff_head inputq; int dests[MAX_BEARERS]; int primary_bearer; + bool bcast_support; }; static struct tipc_bc_base *tipc_bc_base(struct net *net) @@ -79,9 +81,10 @@ static void tipc_bcbase_select_primary(struct net *net) { struct tipc_bc_base *bb = tipc_bc_base(net); int all_dests = tipc_link_bc_peers(bb->link); - int i, mtu; + int i, mtu, prim; bb->primary_bearer = INVALID_BEARER_ID; + bb->bcast_support = true; if (!all_dests) return; @@ -93,7 +96,7 @@ static void tipc_bcbase_select_primary(struct net *net) mtu = tipc_bearer_mtu(net, i); if (mtu < tipc_link_mtu(bb->link)) tipc_link_set_mtu(bb->link, mtu); - + bb->bcast_support &= tipc_bearer_bcast_support(net, i); if (bb->dests[i] < all_dests) continue; @@ -103,6 +106,9 @@ static void tipc_bcbase_select_primary(struct net *net) if ((i ^ tipc_own_addr(net)) & 1) break; } + prim = bb->primary_bearer; + if (prim != INVALID_BEARER_ID) + bb->bcast_support = tipc_bearer_bcast_support(net, prim); } void tipc_bcast_inc_bearer_dst_cnt(struct net *net, int bearer_id) diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c index 52d74760fb68..33a5bdfbef76 100644 --- a/net/tipc/bearer.c +++ b/net/tipc/bearer.c @@ -431,7 +431,7 @@ int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b, memset(&b->bcast_addr, 0, sizeof(b->bcast_addr)); memcpy(b->bcast_addr.value, dev->broadcast, b->media->hwaddr_len); b->bcast_addr.media_id = b->media->type_id; - b->bcast_addr.broadcast = 1; + b->bcast_addr.broadcast = TIPC_BROADCAST_SUPPORT; b->mtu = dev->mtu; b->media->raw2addr(b, &b->addr, (char *)dev->dev_addr); rcu_assign_pointer(dev->tipc_ptr, b); @@ -482,6 +482,19 @@ int tipc_l2_send_msg(struct net *net, struct sk_buff *skb, return 0; } +bool tipc_bearer_bcast_support(struct net *net, u32 bearer_id) +{ + bool supp = false; + struct tipc_bearer *b; + + rcu_read_lock(); + b = bearer_get(net, bearer_id); + if (b) + supp = (b->bcast_addr.broadcast == TIPC_BROADCAST_SUPPORT); + rcu_read_unlock(); + return supp; +} + int tipc_bearer_mtu(struct net *net, u32 bearer_id) { int mtu = 0; diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h index 278ff7f616f9..635c9086e19a 100644 --- a/net/tipc/bearer.h +++ b/net/tipc/bearer.h @@ -60,9 +60,14 @@ #define TIPC_MEDIA_TYPE_IB 2 #define TIPC_MEDIA_TYPE_UDP 3 -/* minimum bearer MTU */ +/* Minimum bearer MTU */ #define TIPC_MIN_BEARER_MTU (MAX_H_SIZE + INT_H_SIZE) +/* Identifiers for distinguishing between broadcast/multicast and replicast + */ +#define TIPC_BROADCAST_SUPPORT 1 +#define TIPC_REPLICAST_SUPPORT 2 + /** * struct tipc_media_addr - destination address used by TIPC bearers * @value: address info (format defined by media) @@ -210,6 +215,7 @@ int tipc_bearer_setup(void); void tipc_bearer_cleanup(void); void tipc_bearer_stop(struct net *net); int tipc_bearer_mtu(struct net *net, u32 bearer_id); +bool tipc_bearer_bcast_support(struct net *net, u32 bearer_id); void tipc_bearer_xmit_skb(struct net *net, u32 bearer_id, struct sk_buff *skb, struct tipc_media_addr *dest); diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c index b58dc95f3d35..46061cf48cd1 100644 --- a/net/tipc/udp_media.c +++ b/net/tipc/udp_media.c @@ -113,7 +113,7 @@ static void tipc_udp_media_addr_set(struct tipc_media_addr *addr, memcpy(addr->value, ua, sizeof(struct udp_media_addr)); if (tipc_udp_is_mcast_addr(ua)) - addr->broadcast = 1; + addr->broadcast = TIPC_BROADCAST_SUPPORT; } /* tipc_udp_addr2str - convert ip/udp address to string */ @@ -229,7 +229,7 @@ static int tipc_udp_send_msg(struct net *net, struct sk_buff *skb, goto out; } - if (!addr->broadcast || list_empty(&ub->rcast.list)) + if (addr->broadcast != TIPC_REPLICAST_SUPPORT) return tipc_udp_xmit(net, skb, ub, src, dst); /* Replicast, send an skb to each configured IP address */ @@ -296,7 +296,7 @@ static int tipc_udp_rcast_add(struct tipc_bearer *b, else if (ntohs(addr->proto) == ETH_P_IPV6) pr_info("New replicast peer: %pI6\n", &rcast->addr.ipv6); #endif - + b->bcast_addr.broadcast = TIPC_REPLICAST_SUPPORT; list_add_rcu(&rcast->list, &ub->rcast.list); return 0; } @@ -681,7 +681,7 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b, goto err; b->bcast_addr.media_id = TIPC_MEDIA_TYPE_UDP; - b->bcast_addr.broadcast = 1; + b->bcast_addr.broadcast = TIPC_BROADCAST_SUPPORT; rcu_assign_pointer(b->media_ptr, ub); rcu_assign_pointer(ub->bearer, b); tipc_udp_media_addr_set(&b->addr, &local); |