diff options
Diffstat (limited to 'net/tipc/bcast.c')
| -rw-r--r-- | net/tipc/bcast.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c index 8b010c976b2f..41042de3ae9b 100644 --- a/net/tipc/bcast.c +++ b/net/tipc/bcast.c @@ -170,6 +170,30 @@ static void bclink_retransmit_pkt(struct tipc_net *tn, u32 after, u32 to) } /** + * bclink_prepare_wakeup - prepare users for wakeup after congestion + * @bcl: broadcast link + * @resultq: queue for users which can be woken up + * Move a number of waiting users, as permitted by available space in + * the send queue, from link wait queue to specified queue for wakeup + */ +static void bclink_prepare_wakeup(struct tipc_link *bcl, struct sk_buff_head *resultq) +{ + int pnd[TIPC_SYSTEM_IMPORTANCE + 1] = {0,}; + int imp, lim; + struct sk_buff *skb, *tmp; + + skb_queue_walk_safe(&bcl->wakeupq, skb, tmp) { + imp = TIPC_SKB_CB(skb)->chain_imp; + lim = bcl->window + bcl->backlog[imp].limit; + pnd[imp] += TIPC_SKB_CB(skb)->chain_sz; + if ((pnd[imp] + bcl->backlog[imp].len) >= lim) + continue; + skb_unlink(skb, &bcl->wakeupq); + skb_queue_tail(resultq, skb); + } +} + +/** * tipc_bclink_wakeup_users - wake up pending users * * Called with no locks taken @@ -177,8 +201,12 @@ static void bclink_retransmit_pkt(struct tipc_net *tn, u32 after, u32 to) void tipc_bclink_wakeup_users(struct net *net) { struct tipc_net *tn = net_generic(net, tipc_net_id); + struct tipc_link *bcl = tn->bcl; + struct sk_buff_head resultq; - tipc_sk_rcv(net, &tn->bclink->link.wakeupq); + skb_queue_head_init(&resultq); + bclink_prepare_wakeup(bcl, &resultq); + tipc_sk_rcv(net, &resultq); } /** |