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| author |   Jon Paul Maloy <jon.maloy@ericsson.com> | 2017-01-18 13:50:50 -0500 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-01-20 12:10:15 -0500 |
| commit | 9999974a8318b605ebae08a87e86232659e56a52 (patch) | |
| tree | c41c2cf1cd43c70faf241dea08a8e630e7f4dc10 /net/tipc/bcast.c | |
| parent | bpf: add bpf_probe_read_str helper (diff) | |
| download | linux-dev-9999974a8318b605ebae08a87e86232659e56a52.tar.xz linux-dev-9999974a8318b605ebae08a87e86232659e56a52.zip | |
tipc: add function for checking broadcast support in bearer
As a preparation for the 'replicast' functionality we are going to
introduce in the next commits, we need the broadcast base structure to
store whether bearer broadcast is available at all from the currently
used bearer or bearers.
We do this by adding a new function tipc_bearer_bcast_support() to
the bearer layer, and letting the bearer selection function in
bcast.c use this to give a new boolean field, 'bcast_support' the
appropriate value.
Reviewed-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/bcast.c')
| -rw-r--r-- | net/tipc/bcast.c | 12 |
1 files changed, 9 insertions, 3 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) |