From f70d37b796241f617107d5585ee96a7e1b660b63 Mon Sep 17 00:00:00 2001 From: Jon Maloy Date: Fri, 13 Oct 2017 11:04:21 +0200 Subject: tipc: add new function for sending multiple small messages We see an increasing need to send multiple single-buffer messages of TIPC_SYSTEM_IMPORTANCE to different individual destination nodes. Instead of looping over the send queue and sending each buffer individually, as we do now, we add a new help function tipc_node_distr_xmit() to do this. Signed-off-by: Jon Maloy Acked-by: Ying Xue Signed-off-by: David S. Miller --- net/tipc/node.c | 16 ++++++++++++++++ net/tipc/node.h | 1 + net/tipc/socket.c | 14 ++------------ 3 files changed, 19 insertions(+), 12 deletions(-) diff --git a/net/tipc/node.c b/net/tipc/node.c index 6cc1ae600820..89f8ac73bf65 100644 --- a/net/tipc/node.c +++ b/net/tipc/node.c @@ -1254,6 +1254,22 @@ int tipc_node_xmit_skb(struct net *net, struct sk_buff *skb, u32 dnode, return 0; } +/* tipc_node_distr_xmit(): send single buffer msgs to individual destinations + * Note: this is only for SYSTEM_IMPORTANCE messages, which cannot be rejected + */ +int tipc_node_distr_xmit(struct net *net, struct sk_buff_head *xmitq) +{ + struct sk_buff *skb; + u32 selector, dnode; + + while ((skb = __skb_dequeue(xmitq))) { + selector = msg_origport(buf_msg(skb)); + dnode = msg_destnode(buf_msg(skb)); + tipc_node_xmit_skb(net, skb, dnode, selector); + } + return 0; +} + void tipc_node_broadcast(struct net *net, struct sk_buff *skb) { struct sk_buff *txskb; diff --git a/net/tipc/node.h b/net/tipc/node.h index 8db59feb122f..df2f2197c4ad 100644 --- a/net/tipc/node.h +++ b/net/tipc/node.h @@ -68,6 +68,7 @@ int tipc_node_get_linkname(struct net *net, u32 bearer_id, u32 node, char *linkname, size_t len); int tipc_node_xmit(struct net *net, struct sk_buff_head *list, u32 dnode, int selector); +int tipc_node_distr_xmit(struct net *net, struct sk_buff_head *list); int tipc_node_xmit_skb(struct net *net, struct sk_buff *skb, u32 dest, u32 selector); void tipc_node_subscribe(struct net *net, struct list_head *subscr, u32 addr); diff --git a/net/tipc/socket.c b/net/tipc/socket.c index bc226f5a1be3..c7c674934474 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -1740,14 +1740,11 @@ static void tipc_sk_filter_rcv(struct sock *sk, struct sk_buff *skb, * @skb: message * * Caller must hold socket lock - * - * Returns 0 */ static int tipc_sk_backlog_rcv(struct sock *sk, struct sk_buff *skb) { unsigned int before = sk_rmem_alloc_get(sk); struct sk_buff_head xmitq; - u32 dnode, selector; unsigned int added; __skb_queue_head_init(&xmitq); @@ -1757,11 +1754,7 @@ static int tipc_sk_backlog_rcv(struct sock *sk, struct sk_buff *skb) atomic_add(added, &tipc_sk(sk)->dupl_rcvcnt); /* Send pending response/rejected messages, if any */ - while ((skb = __skb_dequeue(&xmitq))) { - selector = msg_origport(buf_msg(skb)); - dnode = msg_destnode(buf_msg(skb)); - tipc_node_xmit_skb(sock_net(sk), skb, dnode, selector); - } + tipc_node_distr_xmit(sock_net(sk), &xmitq); return 0; } @@ -1840,10 +1833,7 @@ void tipc_sk_rcv(struct net *net, struct sk_buff_head *inputq) spin_unlock_bh(&sk->sk_lock.slock); } /* Send pending response/rejected messages, if any */ - while ((skb = __skb_dequeue(&xmitq))) { - dnode = msg_destnode(buf_msg(skb)); - tipc_node_xmit_skb(net, skb, dnode, dport); - } + tipc_node_distr_xmit(sock_net(sk), &xmitq); sock_put(sk); continue; } -- cgit