tipc: use generic SKB list APIs to manage TIPC outgoing packet chains
Use standard SKB list APIs associated with struct sk_buff_head to manage socket outgoing packet chain and name table outgoing packet chain, having relevant code simpler and more readable. Signed-off-by: Ying Xue <ying.xue@windriver.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ying Xue
David S. Miller
parent
f03273f1e2
commit
a6ca109443
@ -398,20 +398,20 @@ static void bclink_peek_nack(struct tipc_msg *msg)
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/* tipc_bclink_xmit - broadcast buffer chain to all nodes in cluster
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* and to identified node local sockets
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* @buf: chain of buffers containing message
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* @list: chain of buffers containing message
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* Consumes the buffer chain, except when returning -ELINKCONG
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* Returns 0 if success, otherwise errno: -ELINKCONG,-EHOSTUNREACH,-EMSGSIZE
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*/
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int tipc_bclink_xmit(struct sk_buff *buf)
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int tipc_bclink_xmit(struct sk_buff_head *list)
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{
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int rc = 0;
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int bc = 0;
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struct sk_buff *clbuf;
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struct sk_buff *skb;
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/* Prepare clone of message for local node */
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clbuf = tipc_msg_reassemble(buf);
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if (unlikely(!clbuf)) {
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kfree_skb_list(buf);
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skb = tipc_msg_reassemble(list);
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if (unlikely(!skb)) {
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__skb_queue_purge(list);
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return -EHOSTUNREACH;
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}
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@ -419,7 +419,7 @@ int tipc_bclink_xmit(struct sk_buff *buf)
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if (likely(bclink)) {
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tipc_bclink_lock();
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if (likely(bclink->bcast_nodes.count)) {
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rc = __tipc_link_xmit(bcl, buf);
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rc = __tipc_link_xmit(bcl, list);
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if (likely(!rc)) {
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u32 len = skb_queue_len(&bcl->outqueue);
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@ -433,13 +433,13 @@ int tipc_bclink_xmit(struct sk_buff *buf)
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}
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if (unlikely(!bc))
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kfree_skb_list(buf);
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__skb_queue_purge(list);
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/* Deliver message clone */
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if (likely(!rc))
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tipc_sk_mcast_rcv(clbuf);
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tipc_sk_mcast_rcv(skb);
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else
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kfree_skb(clbuf);
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kfree_skb(skb);
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return rc;
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}
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@ -100,7 +100,7 @@ int tipc_bclink_reset_stats(void);
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int tipc_bclink_set_queue_limits(u32 limit);
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void tipc_bcbearer_sort(struct tipc_node_map *nm_ptr, u32 node, bool action);
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uint tipc_bclink_get_mtu(void);
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int tipc_bclink_xmit(struct sk_buff *buf);
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int tipc_bclink_xmit(struct sk_buff_head *list);
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void tipc_bclink_wakeup_users(void);
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int tipc_nl_add_bc_link(struct tipc_nl_msg *msg);
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@ -664,9 +664,10 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
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* - For all other messages we discard the buffer and return -EHOSTUNREACH
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* - For TIPC internal messages we also reset the link
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*/
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static int tipc_link_cong(struct tipc_link *link, struct sk_buff *buf)
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static int tipc_link_cong(struct tipc_link *link, struct sk_buff_head *list)
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{
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struct tipc_msg *msg = buf_msg(buf);
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struct sk_buff *skb = skb_peek(list);
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struct tipc_msg *msg = buf_msg(skb);
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uint imp = tipc_msg_tot_importance(msg);
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u32 oport = msg_tot_origport(msg);
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@ -679,28 +680,29 @@ static int tipc_link_cong(struct tipc_link *link, struct sk_buff *buf)
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goto drop;
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if (unlikely(msg_reroute_cnt(msg)))
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goto drop;
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if (TIPC_SKB_CB(buf)->wakeup_pending)
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if (TIPC_SKB_CB(skb)->wakeup_pending)
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return -ELINKCONG;
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if (link_schedule_user(link, oport, TIPC_SKB_CB(buf)->chain_sz, imp))
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if (link_schedule_user(link, oport, skb_queue_len(list), imp))
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return -ELINKCONG;
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drop:
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kfree_skb_list(buf);
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__skb_queue_purge(list);
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return -EHOSTUNREACH;
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}
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/**
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* __tipc_link_xmit(): same as tipc_link_xmit, but destlink is known & locked
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* @link: link to use
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* @skb: chain of buffers containing message
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* @list: chain of buffers containing message
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*
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* Consumes the buffer chain, except when returning -ELINKCONG
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* Returns 0 if success, otherwise errno: -ELINKCONG, -EMSGSIZE (plain socket
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* user data messages) or -EHOSTUNREACH (all other messages/senders)
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* Only the socket functions tipc_send_stream() and tipc_send_packet() need
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* to act on the return value, since they may need to do more send attempts.
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*/
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int __tipc_link_xmit(struct tipc_link *link, struct sk_buff *skb)
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int __tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list)
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{
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struct tipc_msg *msg = buf_msg(skb);
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struct tipc_msg *msg = buf_msg(skb_peek(list));
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uint psz = msg_size(msg);
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uint sndlim = link->queue_limit[0];
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uint imp = tipc_msg_tot_importance(msg);
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@ -710,21 +712,21 @@ int __tipc_link_xmit(struct tipc_link *link, struct sk_buff *skb)
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uint bc_last_in = link->owner->bclink.last_in;
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struct tipc_media_addr *addr = &link->media_addr;
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struct sk_buff_head *outqueue = &link->outqueue;
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struct sk_buff *next;
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struct sk_buff *skb, *tmp;
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/* Match queue limits against msg importance: */
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if (unlikely(skb_queue_len(outqueue) >= link->queue_limit[imp]))
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return tipc_link_cong(link, skb);
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return tipc_link_cong(link, list);
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/* Has valid packet limit been used ? */
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if (unlikely(psz > mtu)) {
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kfree_skb_list(skb);
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__skb_queue_purge(list);
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return -EMSGSIZE;
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}
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/* Prepare each packet for sending, and add to outqueue: */
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while (skb) {
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next = skb->next;
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skb_queue_walk_safe(list, skb, tmp) {
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__skb_unlink(skb, list);
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msg = buf_msg(skb);
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msg_set_word(msg, 2, ((ack << 16) | mod(seqno)));
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msg_set_bcast_ack(msg, bc_last_in);
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@ -736,7 +738,6 @@ int __tipc_link_xmit(struct tipc_link *link, struct sk_buff *skb)
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link->unacked_window = 0;
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} else if (tipc_msg_bundle(outqueue, skb, mtu)) {
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link->stats.sent_bundled++;
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skb = next;
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continue;
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} else if (tipc_msg_make_bundle(outqueue, skb, mtu,
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link->addr)) {
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@ -750,22 +751,43 @@ int __tipc_link_xmit(struct tipc_link *link, struct sk_buff *skb)
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link->next_out = skb;
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}
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seqno++;
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skb = next;
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}
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link->next_out_no = seqno;
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return 0;
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}
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static void skb2list(struct sk_buff *skb, struct sk_buff_head *list)
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{
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__skb_queue_head_init(list);
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__skb_queue_tail(list, skb);
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}
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static int __tipc_link_xmit_skb(struct tipc_link *link, struct sk_buff *skb)
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{
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struct sk_buff_head head;
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skb2list(skb, &head);
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return __tipc_link_xmit(link, &head);
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}
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int tipc_link_xmit_skb(struct sk_buff *skb, u32 dnode, u32 selector)
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{
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struct sk_buff_head head;
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skb2list(skb, &head);
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return tipc_link_xmit(&head, dnode, selector);
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}
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/**
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* tipc_link_xmit() is the general link level function for message sending
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* @buf: chain of buffers containing message
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* @list: chain of buffers containing message
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* @dsz: amount of user data to be sent
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* @dnode: address of destination node
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* @selector: a number used for deterministic link selection
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* Consumes the buffer chain, except when returning -ELINKCONG
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* Returns 0 if success, otherwise errno: -ELINKCONG,-EHOSTUNREACH,-EMSGSIZE
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*/
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int tipc_link_xmit(struct sk_buff *buf, u32 dnode, u32 selector)
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int tipc_link_xmit(struct sk_buff_head *list, u32 dnode, u32 selector)
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{
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struct tipc_link *link = NULL;
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struct tipc_node *node;
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@ -776,17 +798,22 @@ int tipc_link_xmit(struct sk_buff *buf, u32 dnode, u32 selector)
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tipc_node_lock(node);
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link = node->active_links[selector & 1];
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if (link)
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rc = __tipc_link_xmit(link, buf);
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rc = __tipc_link_xmit(link, list);
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tipc_node_unlock(node);
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}
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if (link)
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return rc;
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if (likely(in_own_node(dnode)))
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return tipc_sk_rcv(buf);
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if (likely(in_own_node(dnode))) {
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/* As a node local message chain never contains more than one
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* buffer, we just need to dequeue one SKB buffer from the
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* head list.
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*/
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return tipc_sk_rcv(__skb_dequeue(list));
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}
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__skb_queue_purge(list);
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kfree_skb_list(buf);
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return rc;
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}
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@ -800,17 +827,17 @@ int tipc_link_xmit(struct sk_buff *buf, u32 dnode, u32 selector)
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*/
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static void tipc_link_sync_xmit(struct tipc_link *link)
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{
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struct sk_buff *buf;
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struct sk_buff *skb;
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struct tipc_msg *msg;
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buf = tipc_buf_acquire(INT_H_SIZE);
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if (!buf)
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skb = tipc_buf_acquire(INT_H_SIZE);
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if (!skb)
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return;
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msg = buf_msg(buf);
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msg = buf_msg(skb);
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tipc_msg_init(msg, BCAST_PROTOCOL, STATE_MSG, INT_H_SIZE, link->addr);
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msg_set_last_bcast(msg, link->owner->bclink.acked);
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__tipc_link_xmit(link, buf);
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__tipc_link_xmit_skb(link, skb);
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}
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/*
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@ -1053,8 +1080,7 @@ void tipc_rcv(struct sk_buff *skb, struct tipc_bearer *b_ptr)
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u32 ackd;
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u32 released;
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__skb_queue_head_init(&head);
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__skb_queue_tail(&head, skb);
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skb2list(skb, &head);
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while ((skb = __skb_dequeue(&head))) {
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/* Ensure message is well-formed */
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@ -1573,7 +1599,7 @@ static void tipc_link_tunnel_xmit(struct tipc_link *l_ptr,
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u32 selector)
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{
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struct tipc_link *tunnel;
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struct sk_buff *buf;
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struct sk_buff *skb;
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u32 length = msg_size(msg);
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tunnel = l_ptr->owner->active_links[selector & 1];
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@ -1582,14 +1608,14 @@ static void tipc_link_tunnel_xmit(struct tipc_link *l_ptr,
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return;
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}
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msg_set_size(tunnel_hdr, length + INT_H_SIZE);
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buf = tipc_buf_acquire(length + INT_H_SIZE);
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if (!buf) {
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skb = tipc_buf_acquire(length + INT_H_SIZE);
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if (!skb) {
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pr_warn("%sunable to send tunnel msg\n", link_co_err);
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return;
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}
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skb_copy_to_linear_data(buf, tunnel_hdr, INT_H_SIZE);
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skb_copy_to_linear_data_offset(buf, INT_H_SIZE, msg, length);
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__tipc_link_xmit(tunnel, buf);
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skb_copy_to_linear_data(skb, tunnel_hdr, INT_H_SIZE);
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skb_copy_to_linear_data_offset(skb, INT_H_SIZE, msg, length);
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__tipc_link_xmit_skb(tunnel, skb);
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}
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@ -1620,7 +1646,7 @@ void tipc_link_failover_send_queue(struct tipc_link *l_ptr)
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if (skb) {
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skb_copy_to_linear_data(skb, &tunnel_hdr, INT_H_SIZE);
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msg_set_size(&tunnel_hdr, INT_H_SIZE);
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__tipc_link_xmit(tunnel, skb);
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__tipc_link_xmit_skb(tunnel, skb);
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} else {
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pr_warn("%sunable to send changeover msg\n",
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link_co_err);
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@ -1691,7 +1717,7 @@ void tipc_link_dup_queue_xmit(struct tipc_link *l_ptr,
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skb_copy_to_linear_data(outskb, &tunnel_hdr, INT_H_SIZE);
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skb_copy_to_linear_data_offset(outskb, INT_H_SIZE, skb->data,
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length);
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__tipc_link_xmit(tunnel, outskb);
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__tipc_link_xmit_skb(tunnel, outskb);
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if (!tipc_link_is_up(l_ptr))
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return;
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}
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@ -213,8 +213,9 @@ struct sk_buff *tipc_link_cmd_reset_stats(const void *req_tlv_area,
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void tipc_link_reset_all(struct tipc_node *node);
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void tipc_link_reset(struct tipc_link *l_ptr);
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void tipc_link_reset_list(unsigned int bearer_id);
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int tipc_link_xmit(struct sk_buff *buf, u32 dest, u32 selector);
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int __tipc_link_xmit(struct tipc_link *link, struct sk_buff *buf);
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int tipc_link_xmit_skb(struct sk_buff *skb, u32 dest, u32 selector);
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int tipc_link_xmit(struct sk_buff_head *list, u32 dest, u32 selector);
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int __tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list);
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u32 tipc_link_get_max_pkt(u32 dest, u32 selector);
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void tipc_link_bundle_rcv(struct sk_buff *buf);
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void tipc_link_proto_xmit(struct tipc_link *l_ptr, u32 msg_typ, int prob,
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@ -166,11 +166,12 @@ err:
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* @offset: Posision in iov to start copying from
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* @dsz: Total length of user data
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* @pktmax: Max packet size that can be used
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* @chain: Buffer or chain of buffers to be returned to caller
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* @list: Buffer or chain of buffers to be returned to caller
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*
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* Returns message data size or errno: -ENOMEM, -EFAULT
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*/
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int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
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int offset, int dsz, int pktmax , struct sk_buff **chain)
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int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m, int offset,
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int dsz, int pktmax, struct sk_buff_head *list)
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{
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int mhsz = msg_hdr_sz(mhdr);
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int msz = mhsz + dsz;
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@ -179,22 +180,22 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
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int pktrem = pktmax;
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int drem = dsz;
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struct tipc_msg pkthdr;
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struct sk_buff *buf, *prev;
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struct sk_buff *skb;
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char *pktpos;
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int rc;
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uint chain_sz = 0;
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msg_set_size(mhdr, msz);
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/* No fragmentation needed? */
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if (likely(msz <= pktmax)) {
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buf = tipc_buf_acquire(msz);
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*chain = buf;
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if (unlikely(!buf))
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skb = tipc_buf_acquire(msz);
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if (unlikely(!skb))
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return -ENOMEM;
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skb_copy_to_linear_data(buf, mhdr, mhsz);
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pktpos = buf->data + mhsz;
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TIPC_SKB_CB(buf)->chain_sz = 1;
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if (!dsz || !memcpy_fromiovecend(pktpos, m->msg_iov, offset, dsz))
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__skb_queue_tail(list, skb);
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skb_copy_to_linear_data(skb, mhdr, mhsz);
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pktpos = skb->data + mhsz;
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if (!dsz || !memcpy_fromiovecend(pktpos, m->msg_iov, offset,
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dsz))
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return dsz;
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rc = -EFAULT;
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goto error;
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@ -207,15 +208,15 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
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msg_set_fragm_no(&pkthdr, pktno);
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/* Prepare first fragment */
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*chain = buf = tipc_buf_acquire(pktmax);
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if (!buf)
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skb = tipc_buf_acquire(pktmax);
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if (!skb)
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return -ENOMEM;
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chain_sz = 1;
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pktpos = buf->data;
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skb_copy_to_linear_data(buf, &pkthdr, INT_H_SIZE);
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__skb_queue_tail(list, skb);
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pktpos = skb->data;
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skb_copy_to_linear_data(skb, &pkthdr, INT_H_SIZE);
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pktpos += INT_H_SIZE;
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pktrem -= INT_H_SIZE;
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skb_copy_to_linear_data_offset(buf, INT_H_SIZE, mhdr, mhsz);
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skb_copy_to_linear_data_offset(skb, INT_H_SIZE, mhdr, mhsz);
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pktpos += mhsz;
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pktrem -= mhsz;
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@ -238,28 +239,25 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
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pktsz = drem + INT_H_SIZE;
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else
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pktsz = pktmax;
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prev = buf;
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buf = tipc_buf_acquire(pktsz);
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if (!buf) {
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skb = tipc_buf_acquire(pktsz);
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if (!skb) {
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rc = -ENOMEM;
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goto error;
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}
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chain_sz++;
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prev->next = buf;
|
||||
__skb_queue_tail(list, skb);
|
||||
msg_set_type(&pkthdr, FRAGMENT);
|
||||
msg_set_size(&pkthdr, pktsz);
|
||||
msg_set_fragm_no(&pkthdr, ++pktno);
|
||||
skb_copy_to_linear_data(buf, &pkthdr, INT_H_SIZE);
|
||||
pktpos = buf->data + INT_H_SIZE;
|
||||
skb_copy_to_linear_data(skb, &pkthdr, INT_H_SIZE);
|
||||
pktpos = skb->data + INT_H_SIZE;
|
||||
pktrem = pktsz - INT_H_SIZE;
|
||||
|
||||
} while (1);
|
||||
TIPC_SKB_CB(*chain)->chain_sz = chain_sz;
|
||||
msg_set_type(buf_msg(buf), LAST_FRAGMENT);
|
||||
msg_set_type(buf_msg(skb), LAST_FRAGMENT);
|
||||
return dsz;
|
||||
error:
|
||||
kfree_skb_list(*chain);
|
||||
*chain = NULL;
|
||||
__skb_queue_purge(list);
|
||||
__skb_queue_head_init(list);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -430,22 +428,23 @@ int tipc_msg_eval(struct sk_buff *buf, u32 *dnode)
|
||||
/* tipc_msg_reassemble() - clone a buffer chain of fragments and
|
||||
* reassemble the clones into one message
|
||||
*/
|
||||
struct sk_buff *tipc_msg_reassemble(struct sk_buff *chain)
|
||||
struct sk_buff *tipc_msg_reassemble(struct sk_buff_head *list)
|
||||
{
|
||||
struct sk_buff *buf = chain;
|
||||
struct sk_buff *frag = buf;
|
||||
struct sk_buff *skb;
|
||||
struct sk_buff *frag = NULL;
|
||||
struct sk_buff *head = NULL;
|
||||
int hdr_sz;
|
||||
|
||||
/* Copy header if single buffer */
|
||||
if (!buf->next) {
|
||||
hdr_sz = skb_headroom(buf) + msg_hdr_sz(buf_msg(buf));
|
||||
return __pskb_copy(buf, hdr_sz, GFP_ATOMIC);
|
||||
if (skb_queue_len(list) == 1) {
|
||||
skb = skb_peek(list);
|
||||
hdr_sz = skb_headroom(skb) + msg_hdr_sz(buf_msg(skb));
|
||||
return __pskb_copy(skb, hdr_sz, GFP_ATOMIC);
|
||||
}
|
||||
|
||||
/* Clone all fragments and reassemble */
|
||||
while (buf) {
|
||||
frag = skb_clone(buf, GFP_ATOMIC);
|
||||
skb_queue_walk(list, skb) {
|
||||
frag = skb_clone(skb, GFP_ATOMIC);
|
||||
if (!frag)
|
||||
goto error;
|
||||
frag->next = NULL;
|
||||
@ -453,7 +452,6 @@ struct sk_buff *tipc_msg_reassemble(struct sk_buff *chain)
|
||||
break;
|
||||
if (!head)
|
||||
goto error;
|
||||
buf = buf->next;
|
||||
}
|
||||
return frag;
|
||||
error:
|
||||
|
||||
@ -739,9 +739,9 @@ bool tipc_msg_bundle(struct sk_buff_head *list, struct sk_buff *skb, u32 mtu);
|
||||
bool tipc_msg_make_bundle(struct sk_buff_head *list, struct sk_buff *skb,
|
||||
u32 mtu, u32 dnode);
|
||||
|
||||
int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
|
||||
int offset, int dsz, int mtu , struct sk_buff **chain);
|
||||
int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m, int offset,
|
||||
int dsz, int mtu, struct sk_buff_head *list);
|
||||
|
||||
struct sk_buff *tipc_msg_reassemble(struct sk_buff *chain);
|
||||
struct sk_buff *tipc_msg_reassemble(struct sk_buff_head *list);
|
||||
|
||||
#endif
|
||||
|
||||
@ -114,9 +114,9 @@ static struct sk_buff *named_prepare_buf(u32 type, u32 size, u32 dest)
|
||||
return buf;
|
||||
}
|
||||
|
||||
void named_cluster_distribute(struct sk_buff *buf)
|
||||
void named_cluster_distribute(struct sk_buff *skb)
|
||||
{
|
||||
struct sk_buff *obuf;
|
||||
struct sk_buff *oskb;
|
||||
struct tipc_node *node;
|
||||
u32 dnode;
|
||||
|
||||
@ -127,15 +127,15 @@ void named_cluster_distribute(struct sk_buff *buf)
|
||||
continue;
|
||||
if (!tipc_node_active_links(node))
|
||||
continue;
|
||||
obuf = skb_copy(buf, GFP_ATOMIC);
|
||||
if (!obuf)
|
||||
oskb = skb_copy(skb, GFP_ATOMIC);
|
||||
if (!oskb)
|
||||
break;
|
||||
msg_set_destnode(buf_msg(obuf), dnode);
|
||||
tipc_link_xmit(obuf, dnode, dnode);
|
||||
msg_set_destnode(buf_msg(oskb), dnode);
|
||||
tipc_link_xmit_skb(oskb, dnode, dnode);
|
||||
}
|
||||
rcu_read_unlock();
|
||||
|
||||
kfree_skb(buf);
|
||||
kfree_skb(skb);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -190,15 +190,15 @@ struct sk_buff *tipc_named_withdraw(struct publication *publ)
|
||||
|
||||
/**
|
||||
* named_distribute - prepare name info for bulk distribution to another node
|
||||
* @msg_list: list of messages (buffers) to be returned from this function
|
||||
* @list: list of messages (buffers) to be returned from this function
|
||||
* @dnode: node to be updated
|
||||
* @pls: linked list of publication items to be packed into buffer chain
|
||||
*/
|
||||
static void named_distribute(struct list_head *msg_list, u32 dnode,
|
||||
static void named_distribute(struct sk_buff_head *list, u32 dnode,
|
||||
struct publ_list *pls)
|
||||
{
|
||||
struct publication *publ;
|
||||
struct sk_buff *buf = NULL;
|
||||
struct sk_buff *skb = NULL;
|
||||
struct distr_item *item = NULL;
|
||||
uint dsz = pls->size * ITEM_SIZE;
|
||||
uint msg_dsz = (tipc_node_get_mtu(dnode, 0) / ITEM_SIZE) * ITEM_SIZE;
|
||||
@ -207,15 +207,15 @@ static void named_distribute(struct list_head *msg_list, u32 dnode,
|
||||
|
||||
list_for_each_entry(publ, &pls->list, local_list) {
|
||||
/* Prepare next buffer: */
|
||||
if (!buf) {
|
||||
if (!skb) {
|
||||
msg_rem = min_t(uint, rem, msg_dsz);
|
||||
rem -= msg_rem;
|
||||
buf = named_prepare_buf(PUBLICATION, msg_rem, dnode);
|
||||
if (!buf) {
|
||||
skb = named_prepare_buf(PUBLICATION, msg_rem, dnode);
|
||||
if (!skb) {
|
||||
pr_warn("Bulk publication failure\n");
|
||||
return;
|
||||
}
|
||||
item = (struct distr_item *)msg_data(buf_msg(buf));
|
||||
item = (struct distr_item *)msg_data(buf_msg(skb));
|
||||
}
|
||||
|
||||
/* Pack publication into message: */
|
||||
@ -225,8 +225,8 @@ static void named_distribute(struct list_head *msg_list, u32 dnode,
|
||||
|
||||
/* Append full buffer to list: */
|
||||
if (!msg_rem) {
|
||||
list_add_tail((struct list_head *)buf, msg_list);
|
||||
buf = NULL;
|
||||
__skb_queue_tail(list, skb);
|
||||
skb = NULL;
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -236,18 +236,16 @@ static void named_distribute(struct list_head *msg_list, u32 dnode,
|
||||
*/
|
||||
void tipc_named_node_up(u32 dnode)
|
||||
{
|
||||
LIST_HEAD(msg_list);
|
||||
struct sk_buff *buf_chain;
|
||||
struct sk_buff_head head;
|
||||
|
||||
__skb_queue_head_init(&head);
|
||||
|
||||
read_lock_bh(&tipc_nametbl_lock);
|
||||
named_distribute(&msg_list, dnode, &publ_cluster);
|
||||
named_distribute(&msg_list, dnode, &publ_zone);
|
||||
named_distribute(&head, dnode, &publ_cluster);
|
||||
named_distribute(&head, dnode, &publ_zone);
|
||||
read_unlock_bh(&tipc_nametbl_lock);
|
||||
|
||||
/* Convert circular list to linear list and send: */
|
||||
buf_chain = (struct sk_buff *)msg_list.next;
|
||||
((struct sk_buff *)msg_list.prev)->next = NULL;
|
||||
tipc_link_xmit(buf_chain, dnode, dnode);
|
||||
tipc_link_xmit(&head, dnode, dnode);
|
||||
}
|
||||
|
||||
static void tipc_publ_subscribe(struct publication *publ, u32 addr)
|
||||
|
||||
@ -244,12 +244,12 @@ static void tsk_advance_rx_queue(struct sock *sk)
|
||||
*/
|
||||
static void tsk_rej_rx_queue(struct sock *sk)
|
||||
{
|
||||
struct sk_buff *buf;
|
||||
struct sk_buff *skb;
|
||||
u32 dnode;
|
||||
|
||||
while ((buf = __skb_dequeue(&sk->sk_receive_queue))) {
|
||||
if (tipc_msg_reverse(buf, &dnode, TIPC_ERR_NO_PORT))
|
||||
tipc_link_xmit(buf, dnode, 0);
|
||||
while ((skb = __skb_dequeue(&sk->sk_receive_queue))) {
|
||||
if (tipc_msg_reverse(skb, &dnode, TIPC_ERR_NO_PORT))
|
||||
tipc_link_xmit_skb(skb, dnode, 0);
|
||||
}
|
||||
}
|
||||
|
||||
@ -462,7 +462,7 @@ static int tipc_release(struct socket *sock)
|
||||
{
|
||||
struct sock *sk = sock->sk;
|
||||
struct tipc_sock *tsk;
|
||||
struct sk_buff *buf;
|
||||
struct sk_buff *skb;
|
||||
u32 dnode;
|
||||
|
||||
/*
|
||||
@ -481,11 +481,11 @@ static int tipc_release(struct socket *sock)
|
||||
*/
|
||||
dnode = tsk_peer_node(tsk);
|
||||
while (sock->state != SS_DISCONNECTING) {
|
||||
buf = __skb_dequeue(&sk->sk_receive_queue);
|
||||
if (buf == NULL)
|
||||
skb = __skb_dequeue(&sk->sk_receive_queue);
|
||||
if (skb == NULL)
|
||||
break;
|
||||
if (TIPC_SKB_CB(buf)->handle != NULL)
|
||||
kfree_skb(buf);
|
||||
if (TIPC_SKB_CB(skb)->handle != NULL)
|
||||
kfree_skb(skb);
|
||||
else {
|
||||
if ((sock->state == SS_CONNECTING) ||
|
||||
(sock->state == SS_CONNECTED)) {
|
||||
@ -493,8 +493,8 @@ static int tipc_release(struct socket *sock)
|
||||
tsk->connected = 0;
|
||||
tipc_node_remove_conn(dnode, tsk->ref);
|
||||
}
|
||||
if (tipc_msg_reverse(buf, &dnode, TIPC_ERR_NO_PORT))
|
||||
tipc_link_xmit(buf, dnode, 0);
|
||||
if (tipc_msg_reverse(skb, &dnode, TIPC_ERR_NO_PORT))
|
||||
tipc_link_xmit_skb(skb, dnode, 0);
|
||||
}
|
||||
}
|
||||
|
||||
@ -502,12 +502,12 @@ static int tipc_release(struct socket *sock)
|
||||
tipc_sk_ref_discard(tsk->ref);
|
||||
k_cancel_timer(&tsk->timer);
|
||||
if (tsk->connected) {
|
||||
buf = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE, TIPC_CONN_MSG,
|
||||
skb = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE, TIPC_CONN_MSG,
|
||||
SHORT_H_SIZE, 0, dnode, tipc_own_addr,
|
||||
tsk_peer_port(tsk),
|
||||
tsk->ref, TIPC_ERR_NO_PORT);
|
||||
if (buf)
|
||||
tipc_link_xmit(buf, dnode, tsk->ref);
|
||||
if (skb)
|
||||
tipc_link_xmit_skb(skb, dnode, tsk->ref);
|
||||
tipc_node_remove_conn(dnode, tsk->ref);
|
||||
}
|
||||
k_term_timer(&tsk->timer);
|
||||
@ -712,7 +712,7 @@ static int tipc_sendmcast(struct socket *sock, struct tipc_name_seq *seq,
|
||||
{
|
||||
struct sock *sk = sock->sk;
|
||||
struct tipc_msg *mhdr = &tipc_sk(sk)->phdr;
|
||||
struct sk_buff *buf;
|
||||
struct sk_buff_head head;
|
||||
uint mtu;
|
||||
int rc;
|
||||
|
||||
@ -727,12 +727,13 @@ static int tipc_sendmcast(struct socket *sock, struct tipc_name_seq *seq,
|
||||
|
||||
new_mtu:
|
||||
mtu = tipc_bclink_get_mtu();
|
||||
rc = tipc_msg_build(mhdr, msg, 0, dsz, mtu, &buf);
|
||||
__skb_queue_head_init(&head);
|
||||
rc = tipc_msg_build(mhdr, msg, 0, dsz, mtu, &head);
|
||||
if (unlikely(rc < 0))
|
||||
return rc;
|
||||
|
||||
do {
|
||||
rc = tipc_bclink_xmit(buf);
|
||||
rc = tipc_bclink_xmit(&head);
|
||||
if (likely(rc >= 0)) {
|
||||
rc = dsz;
|
||||
break;
|
||||
@ -744,7 +745,7 @@ new_mtu:
|
||||
tipc_sk(sk)->link_cong = 1;
|
||||
rc = tipc_wait_for_sndmsg(sock, &timeo);
|
||||
if (rc)
|
||||
kfree_skb_list(buf);
|
||||
__skb_queue_purge(&head);
|
||||
} while (!rc);
|
||||
return rc;
|
||||
}
|
||||
@ -906,7 +907,8 @@ static int tipc_sendmsg(struct kiocb *iocb, struct socket *sock,
|
||||
struct tipc_sock *tsk = tipc_sk(sk);
|
||||
struct tipc_msg *mhdr = &tsk->phdr;
|
||||
u32 dnode, dport;
|
||||
struct sk_buff *buf;
|
||||
struct sk_buff_head head;
|
||||
struct sk_buff *skb;
|
||||
struct tipc_name_seq *seq = &dest->addr.nameseq;
|
||||
u32 mtu;
|
||||
long timeo;
|
||||
@ -981,13 +983,15 @@ static int tipc_sendmsg(struct kiocb *iocb, struct socket *sock,
|
||||
|
||||
new_mtu:
|
||||
mtu = tipc_node_get_mtu(dnode, tsk->ref);
|
||||
rc = tipc_msg_build(mhdr, m, 0, dsz, mtu, &buf);
|
||||
__skb_queue_head_init(&head);
|
||||
rc = tipc_msg_build(mhdr, m, 0, dsz, mtu, &head);
|
||||
if (rc < 0)
|
||||
goto exit;
|
||||
|
||||
do {
|
||||
TIPC_SKB_CB(buf)->wakeup_pending = tsk->link_cong;
|
||||
rc = tipc_link_xmit(buf, dnode, tsk->ref);
|
||||
skb = skb_peek(&head);
|
||||
TIPC_SKB_CB(skb)->wakeup_pending = tsk->link_cong;
|
||||
rc = tipc_link_xmit(&head, dnode, tsk->ref);
|
||||
if (likely(rc >= 0)) {
|
||||
if (sock->state != SS_READY)
|
||||
sock->state = SS_CONNECTING;
|
||||
@ -1001,7 +1005,7 @@ new_mtu:
|
||||
tsk->link_cong = 1;
|
||||
rc = tipc_wait_for_sndmsg(sock, &timeo);
|
||||
if (rc)
|
||||
kfree_skb_list(buf);
|
||||
__skb_queue_purge(&head);
|
||||
} while (!rc);
|
||||
exit:
|
||||
if (iocb)
|
||||
@ -1058,7 +1062,7 @@ static int tipc_send_stream(struct kiocb *iocb, struct socket *sock,
|
||||
struct sock *sk = sock->sk;
|
||||
struct tipc_sock *tsk = tipc_sk(sk);
|
||||
struct tipc_msg *mhdr = &tsk->phdr;
|
||||
struct sk_buff *buf;
|
||||
struct sk_buff_head head;
|
||||
DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name);
|
||||
u32 ref = tsk->ref;
|
||||
int rc = -EINVAL;
|
||||
@ -1093,12 +1097,13 @@ static int tipc_send_stream(struct kiocb *iocb, struct socket *sock,
|
||||
next:
|
||||
mtu = tsk->max_pkt;
|
||||
send = min_t(uint, dsz - sent, TIPC_MAX_USER_MSG_SIZE);
|
||||
rc = tipc_msg_build(mhdr, m, sent, send, mtu, &buf);
|
||||
__skb_queue_head_init(&head);
|
||||
rc = tipc_msg_build(mhdr, m, sent, send, mtu, &head);
|
||||
if (unlikely(rc < 0))
|
||||
goto exit;
|
||||
do {
|
||||
if (likely(!tsk_conn_cong(tsk))) {
|
||||
rc = tipc_link_xmit(buf, dnode, ref);
|
||||
rc = tipc_link_xmit(&head, dnode, ref);
|
||||
if (likely(!rc)) {
|
||||
tsk->sent_unacked++;
|
||||
sent += send;
|
||||
@ -1116,7 +1121,7 @@ next:
|
||||
}
|
||||
rc = tipc_wait_for_sndpkt(sock, &timeo);
|
||||
if (rc)
|
||||
kfree_skb_list(buf);
|
||||
__skb_queue_purge(&head);
|
||||
} while (!rc);
|
||||
exit:
|
||||
if (iocb)
|
||||
@ -1261,20 +1266,20 @@ static int tipc_sk_anc_data_recv(struct msghdr *m, struct tipc_msg *msg,
|
||||
|
||||
static void tipc_sk_send_ack(struct tipc_sock *tsk, uint ack)
|
||||
{
|
||||
struct sk_buff *buf = NULL;
|
||||
struct sk_buff *skb = NULL;
|
||||
struct tipc_msg *msg;
|
||||
u32 peer_port = tsk_peer_port(tsk);
|
||||
u32 dnode = tsk_peer_node(tsk);
|
||||
|
||||
if (!tsk->connected)
|
||||
return;
|
||||
buf = tipc_msg_create(CONN_MANAGER, CONN_ACK, INT_H_SIZE, 0, dnode,
|
||||
skb = tipc_msg_create(CONN_MANAGER, CONN_ACK, INT_H_SIZE, 0, dnode,
|
||||
tipc_own_addr, peer_port, tsk->ref, TIPC_OK);
|
||||
if (!buf)
|
||||
if (!skb)
|
||||
return;
|
||||
msg = buf_msg(buf);
|
||||
msg = buf_msg(skb);
|
||||
msg_set_msgcnt(msg, ack);
|
||||
tipc_link_xmit(buf, dnode, msg_link_selector(msg));
|
||||
tipc_link_xmit_skb(skb, dnode, msg_link_selector(msg));
|
||||
}
|
||||
|
||||
static int tipc_wait_for_rcvmsg(struct socket *sock, long *timeop)
|
||||
@ -1729,20 +1734,20 @@ static int filter_rcv(struct sock *sk, struct sk_buff *buf)
|
||||
/**
|
||||
* tipc_backlog_rcv - handle incoming message from backlog queue
|
||||
* @sk: socket
|
||||
* @buf: message
|
||||
* @skb: message
|
||||
*
|
||||
* Caller must hold socket lock, but not port lock.
|
||||
*
|
||||
* Returns 0
|
||||
*/
|
||||
static int tipc_backlog_rcv(struct sock *sk, struct sk_buff *buf)
|
||||
static int tipc_backlog_rcv(struct sock *sk, struct sk_buff *skb)
|
||||
{
|
||||
int rc;
|
||||
u32 onode;
|
||||
struct tipc_sock *tsk = tipc_sk(sk);
|
||||
uint truesize = buf->truesize;
|
||||
uint truesize = skb->truesize;
|
||||
|
||||
rc = filter_rcv(sk, buf);
|
||||
rc = filter_rcv(sk, skb);
|
||||
|
||||
if (likely(!rc)) {
|
||||
if (atomic_read(&tsk->dupl_rcvcnt) < TIPC_CONN_OVERLOAD_LIMIT)
|
||||
@ -1750,25 +1755,25 @@ static int tipc_backlog_rcv(struct sock *sk, struct sk_buff *buf)
|
||||
return 0;
|
||||
}
|
||||
|
||||
if ((rc < 0) && !tipc_msg_reverse(buf, &onode, -rc))
|
||||
if ((rc < 0) && !tipc_msg_reverse(skb, &onode, -rc))
|
||||
return 0;
|
||||
|
||||
tipc_link_xmit(buf, onode, 0);
|
||||
tipc_link_xmit_skb(skb, onode, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* tipc_sk_rcv - handle incoming message
|
||||
* @buf: buffer containing arriving message
|
||||
* @skb: buffer containing arriving message
|
||||
* Consumes buffer
|
||||
* Returns 0 if success, or errno: -EHOSTUNREACH
|
||||
*/
|
||||
int tipc_sk_rcv(struct sk_buff *buf)
|
||||
int tipc_sk_rcv(struct sk_buff *skb)
|
||||
{
|
||||
struct tipc_sock *tsk;
|
||||
struct sock *sk;
|
||||
u32 dport = msg_destport(buf_msg(buf));
|
||||
u32 dport = msg_destport(buf_msg(skb));
|
||||
int rc = TIPC_OK;
|
||||
uint limit;
|
||||
u32 dnode;
|
||||
@ -1776,7 +1781,7 @@ int tipc_sk_rcv(struct sk_buff *buf)
|
||||
/* Validate destination and message */
|
||||
tsk = tipc_sk_get(dport);
|
||||
if (unlikely(!tsk)) {
|
||||
rc = tipc_msg_eval(buf, &dnode);
|
||||
rc = tipc_msg_eval(skb, &dnode);
|
||||
goto exit;
|
||||
}
|
||||
sk = &tsk->sk;
|
||||
@ -1785,12 +1790,12 @@ int tipc_sk_rcv(struct sk_buff *buf)
|
||||
spin_lock_bh(&sk->sk_lock.slock);
|
||||
|
||||
if (!sock_owned_by_user(sk)) {
|
||||
rc = filter_rcv(sk, buf);
|
||||
rc = filter_rcv(sk, skb);
|
||||
} else {
|
||||
if (sk->sk_backlog.len == 0)
|
||||
atomic_set(&tsk->dupl_rcvcnt, 0);
|
||||
limit = rcvbuf_limit(sk, buf) + atomic_read(&tsk->dupl_rcvcnt);
|
||||
if (sk_add_backlog(sk, buf, limit))
|
||||
limit = rcvbuf_limit(sk, skb) + atomic_read(&tsk->dupl_rcvcnt);
|
||||
if (sk_add_backlog(sk, skb, limit))
|
||||
rc = -TIPC_ERR_OVERLOAD;
|
||||
}
|
||||
spin_unlock_bh(&sk->sk_lock.slock);
|
||||
@ -1798,10 +1803,10 @@ int tipc_sk_rcv(struct sk_buff *buf)
|
||||
if (likely(!rc))
|
||||
return 0;
|
||||
exit:
|
||||
if ((rc < 0) && !tipc_msg_reverse(buf, &dnode, -rc))
|
||||
if ((rc < 0) && !tipc_msg_reverse(skb, &dnode, -rc))
|
||||
return -EHOSTUNREACH;
|
||||
|
||||
tipc_link_xmit(buf, dnode, 0);
|
||||
tipc_link_xmit_skb(skb, dnode, 0);
|
||||
return (rc < 0) ? -EHOSTUNREACH : 0;
|
||||
}
|
||||
|
||||
@ -2059,7 +2064,7 @@ static int tipc_shutdown(struct socket *sock, int how)
|
||||
{
|
||||
struct sock *sk = sock->sk;
|
||||
struct tipc_sock *tsk = tipc_sk(sk);
|
||||
struct sk_buff *buf;
|
||||
struct sk_buff *skb;
|
||||
u32 dnode;
|
||||
int res;
|
||||
|
||||
@ -2074,23 +2079,23 @@ static int tipc_shutdown(struct socket *sock, int how)
|
||||
|
||||
restart:
|
||||
/* Disconnect and send a 'FIN+' or 'FIN-' message to peer */
|
||||
buf = __skb_dequeue(&sk->sk_receive_queue);
|
||||
if (buf) {
|
||||
if (TIPC_SKB_CB(buf)->handle != NULL) {
|
||||
kfree_skb(buf);
|
||||
skb = __skb_dequeue(&sk->sk_receive_queue);
|
||||
if (skb) {
|
||||
if (TIPC_SKB_CB(skb)->handle != NULL) {
|
||||
kfree_skb(skb);
|
||||
goto restart;
|
||||
}
|
||||
if (tipc_msg_reverse(buf, &dnode, TIPC_CONN_SHUTDOWN))
|
||||
tipc_link_xmit(buf, dnode, tsk->ref);
|
||||
if (tipc_msg_reverse(skb, &dnode, TIPC_CONN_SHUTDOWN))
|
||||
tipc_link_xmit_skb(skb, dnode, tsk->ref);
|
||||
tipc_node_remove_conn(dnode, tsk->ref);
|
||||
} else {
|
||||
dnode = tsk_peer_node(tsk);
|
||||
buf = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE,
|
||||
skb = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE,
|
||||
TIPC_CONN_MSG, SHORT_H_SIZE,
|
||||
0, dnode, tipc_own_addr,
|
||||
tsk_peer_port(tsk),
|
||||
tsk->ref, TIPC_CONN_SHUTDOWN);
|
||||
tipc_link_xmit(buf, dnode, tsk->ref);
|
||||
tipc_link_xmit_skb(skb, dnode, tsk->ref);
|
||||
}
|
||||
tsk->connected = 0;
|
||||
sock->state = SS_DISCONNECTING;
|
||||
@ -2119,7 +2124,7 @@ static void tipc_sk_timeout(unsigned long ref)
|
||||
{
|
||||
struct tipc_sock *tsk;
|
||||
struct sock *sk;
|
||||
struct sk_buff *buf = NULL;
|
||||
struct sk_buff *skb = NULL;
|
||||
u32 peer_port, peer_node;
|
||||
|
||||
tsk = tipc_sk_get(ref);
|
||||
@ -2137,20 +2142,20 @@ static void tipc_sk_timeout(unsigned long ref)
|
||||
|
||||
if (tsk->probing_state == TIPC_CONN_PROBING) {
|
||||
/* Previous probe not answered -> self abort */
|
||||
buf = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE, TIPC_CONN_MSG,
|
||||
skb = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE, TIPC_CONN_MSG,
|
||||
SHORT_H_SIZE, 0, tipc_own_addr,
|
||||
peer_node, ref, peer_port,
|
||||
TIPC_ERR_NO_PORT);
|
||||
} else {
|
||||
buf = tipc_msg_create(CONN_MANAGER, CONN_PROBE, INT_H_SIZE,
|
||||
skb = tipc_msg_create(CONN_MANAGER, CONN_PROBE, INT_H_SIZE,
|
||||
0, peer_node, tipc_own_addr,
|
||||
peer_port, ref, TIPC_OK);
|
||||
tsk->probing_state = TIPC_CONN_PROBING;
|
||||
k_start_timer(&tsk->timer, tsk->probing_interval);
|
||||
}
|
||||
bh_unlock_sock(sk);
|
||||
if (buf)
|
||||
tipc_link_xmit(buf, peer_node, ref);
|
||||
if (skb)
|
||||
tipc_link_xmit_skb(skb, peer_node, ref);
|
||||
exit:
|
||||
tipc_sk_put(tsk);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user