*/
static void link_timeout(struct tipc_link *l_ptr)
{
+ struct sk_buff *skb;
+
tipc_node_lock(l_ptr->owner);
/* update counters used in statistical profiling of send traffic */
- l_ptr->stats.accu_queue_sz += l_ptr->out_queue_size;
+ l_ptr->stats.accu_queue_sz += skb_queue_len(&l_ptr->outqueue);
l_ptr->stats.queue_sz_counts++;
- if (l_ptr->first_out) {
- struct tipc_msg *msg = buf_msg(l_ptr->first_out);
+ skb = skb_peek(&l_ptr->outqueue);
+ if (skb) {
+ struct tipc_msg *msg = buf_msg(skb);
u32 length = msg_size(msg);
if ((msg_user(msg) == MSG_FRAGMENTER) &&
}
/* do all other link processing performed on a periodic basis */
-
link_state_event(l_ptr, TIMEOUT_EVT);
if (l_ptr->next_out)
link_init_max_pkt(l_ptr);
l_ptr->next_out_no = 1;
+ __skb_queue_head_init(&l_ptr->outqueue);
+ __skb_queue_head_init(&l_ptr->deferred_queue);
__skb_queue_head_init(&l_ptr->waiting_sks);
link_reset_statistics(l_ptr);
*/
static void link_prepare_wakeup(struct tipc_link *link)
{
- uint pend_qsz = link->out_queue_size;
+ uint pend_qsz = skb_queue_len(&link->outqueue);
struct sk_buff *skb, *tmp;
skb_queue_walk_safe(&link->waiting_sks, skb, tmp) {
}
}
-/**
- * link_release_outqueue - purge link's outbound message queue
- * @l_ptr: pointer to link
- */
-static void link_release_outqueue(struct tipc_link *l_ptr)
-{
- kfree_skb_list(l_ptr->first_out);
- l_ptr->first_out = NULL;
- l_ptr->out_queue_size = 0;
-}
-
/**
* tipc_link_reset_fragments - purge link's inbound message fragments queue
* @l_ptr: pointer to link
*/
void tipc_link_purge_queues(struct tipc_link *l_ptr)
{
- kfree_skb_list(l_ptr->oldest_deferred_in);
- kfree_skb_list(l_ptr->first_out);
+ __skb_queue_purge(&l_ptr->deferred_queue);
+ __skb_queue_purge(&l_ptr->outqueue);
tipc_link_reset_fragments(l_ptr);
}
}
/* Clean up all queues: */
- link_release_outqueue(l_ptr);
- kfree_skb_list(l_ptr->oldest_deferred_in);
+ __skb_queue_purge(&l_ptr->outqueue);
+ __skb_queue_purge(&l_ptr->deferred_queue);
if (!skb_queue_empty(&l_ptr->waiting_sks)) {
skb_queue_splice_init(&l_ptr->waiting_sks, &owner->waiting_sks);
owner->action_flags |= TIPC_WAKEUP_USERS;
}
- l_ptr->last_out = NULL;
- l_ptr->first_out = NULL;
l_ptr->next_out = NULL;
l_ptr->unacked_window = 0;
l_ptr->checkpoint = 1;
l_ptr->next_out_no = 1;
- l_ptr->deferred_inqueue_sz = 0;
- l_ptr->oldest_deferred_in = NULL;
- l_ptr->newest_deferred_in = NULL;
l_ptr->fsm_msg_cnt = 0;
l_ptr->stale_count = 0;
link_reset_statistics(l_ptr);
* - For all other messages we discard the buffer and return -EHOSTUNREACH
* - For TIPC internal messages we also reset the link
*/
-static int tipc_link_cong(struct tipc_link *link, struct sk_buff *buf)
+static int tipc_link_cong(struct tipc_link *link, struct sk_buff_head *list)
{
- struct tipc_msg *msg = buf_msg(buf);
+ struct sk_buff *skb = skb_peek(list);
+ struct tipc_msg *msg = buf_msg(skb);
uint imp = tipc_msg_tot_importance(msg);
u32 oport = msg_tot_origport(msg);
goto drop;
if (unlikely(msg_reroute_cnt(msg)))
goto drop;
- if (TIPC_SKB_CB(buf)->wakeup_pending)
+ if (TIPC_SKB_CB(skb)->wakeup_pending)
return -ELINKCONG;
- if (link_schedule_user(link, oport, TIPC_SKB_CB(buf)->chain_sz, imp))
+ if (link_schedule_user(link, oport, skb_queue_len(list), imp))
return -ELINKCONG;
drop:
- kfree_skb_list(buf);
+ __skb_queue_purge(list);
return -EHOSTUNREACH;
}
/**
* __tipc_link_xmit(): same as tipc_link_xmit, but destlink is known & locked
* @link: link to use
- * @buf: chain of buffers containing message
+ * @list: chain of buffers containing message
+ *
* Consumes the buffer chain, except when returning -ELINKCONG
* Returns 0 if success, otherwise errno: -ELINKCONG, -EMSGSIZE (plain socket
* user data messages) or -EHOSTUNREACH (all other messages/senders)
* Only the socket functions tipc_send_stream() and tipc_send_packet() need
* to act on the return value, since they may need to do more send attempts.
*/
-int __tipc_link_xmit(struct tipc_link *link, struct sk_buff *buf)
+int __tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list)
{
- struct tipc_msg *msg = buf_msg(buf);
+ struct tipc_msg *msg = buf_msg(skb_peek(list));
uint psz = msg_size(msg);
- uint qsz = link->out_queue_size;
uint sndlim = link->queue_limit[0];
uint imp = tipc_msg_tot_importance(msg);
uint mtu = link->max_pkt;
uint seqno = link->next_out_no;
uint bc_last_in = link->owner->bclink.last_in;
struct tipc_media_addr *addr = &link->media_addr;
- struct sk_buff *next = buf->next;
+ struct sk_buff_head *outqueue = &link->outqueue;
+ struct sk_buff *skb, *tmp;
/* Match queue limits against msg importance: */
- if (unlikely(qsz >= link->queue_limit[imp]))
- return tipc_link_cong(link, buf);
+ if (unlikely(skb_queue_len(outqueue) >= link->queue_limit[imp]))
+ return tipc_link_cong(link, list);
/* Has valid packet limit been used ? */
if (unlikely(psz > mtu)) {
- kfree_skb_list(buf);
+ __skb_queue_purge(list);
return -EMSGSIZE;
}
/* Prepare each packet for sending, and add to outqueue: */
- while (buf) {
- next = buf->next;
- msg = buf_msg(buf);
+ skb_queue_walk_safe(list, skb, tmp) {
+ __skb_unlink(skb, list);
+ msg = buf_msg(skb);
msg_set_word(msg, 2, ((ack << 16) | mod(seqno)));
msg_set_bcast_ack(msg, bc_last_in);
- if (!link->first_out) {
- link->first_out = buf;
- } else if (qsz < sndlim) {
- link->last_out->next = buf;
- } else if (tipc_msg_bundle(link->last_out, buf, mtu)) {
+ if (skb_queue_len(outqueue) < sndlim) {
+ __skb_queue_tail(outqueue, skb);
+ tipc_bearer_send(link->bearer_id, skb, addr);
+ link->next_out = NULL;
+ link->unacked_window = 0;
+ } else if (tipc_msg_bundle(outqueue, skb, mtu)) {
link->stats.sent_bundled++;
- buf = next;
- next = buf->next;
continue;
- } else if (tipc_msg_make_bundle(&buf, mtu, link->addr)) {
+ } else if (tipc_msg_make_bundle(outqueue, skb, mtu,
+ link->addr)) {
link->stats.sent_bundled++;
link->stats.sent_bundles++;
- link->last_out->next = buf;
if (!link->next_out)
- link->next_out = buf;
+ link->next_out = skb_peek_tail(outqueue);
} else {
- link->last_out->next = buf;
+ __skb_queue_tail(outqueue, skb);
if (!link->next_out)
- link->next_out = buf;
- }
-
- /* Send packet if possible: */
- if (likely(++qsz <= sndlim)) {
- tipc_bearer_send(link->bearer_id, buf, addr);
- link->next_out = next;
- link->unacked_window = 0;
+ link->next_out = skb;
}
seqno++;
- link->last_out = buf;
- buf = next;
}
link->next_out_no = seqno;
- link->out_queue_size = qsz;
return 0;
}
+static void skb2list(struct sk_buff *skb, struct sk_buff_head *list)
+{
+ __skb_queue_head_init(list);
+ __skb_queue_tail(list, skb);
+}
+
+static int __tipc_link_xmit_skb(struct tipc_link *link, struct sk_buff *skb)
+{
+ struct sk_buff_head head;
+
+ skb2list(skb, &head);
+ return __tipc_link_xmit(link, &head);
+}
+
+int tipc_link_xmit_skb(struct sk_buff *skb, u32 dnode, u32 selector)
+{
+ struct sk_buff_head head;
+
+ skb2list(skb, &head);
+ return tipc_link_xmit(&head, dnode, selector);
+}
+
/**
* tipc_link_xmit() is the general link level function for message sending
- * @buf: chain of buffers containing message
+ * @list: chain of buffers containing message
* @dsz: amount of user data to be sent
* @dnode: address of destination node
* @selector: a number used for deterministic link selection
* Consumes the buffer chain, except when returning -ELINKCONG
* Returns 0 if success, otherwise errno: -ELINKCONG,-EHOSTUNREACH,-EMSGSIZE
*/
-int tipc_link_xmit(struct sk_buff *buf, u32 dnode, u32 selector)
+int tipc_link_xmit(struct sk_buff_head *list, u32 dnode, u32 selector)
{
struct tipc_link *link = NULL;
struct tipc_node *node;
tipc_node_lock(node);
link = node->active_links[selector & 1];
if (link)
- rc = __tipc_link_xmit(link, buf);
+ rc = __tipc_link_xmit(link, list);
tipc_node_unlock(node);
}
if (link)
return rc;
- if (likely(in_own_node(dnode)))
- return tipc_sk_rcv(buf);
+ if (likely(in_own_node(dnode))) {
+ /* As a node local message chain never contains more than one
+ * buffer, we just need to dequeue one SKB buffer from the
+ * head list.
+ */
+ return tipc_sk_rcv(__skb_dequeue(list));
+ }
+ __skb_queue_purge(list);
- kfree_skb_list(buf);
return rc;
}
*/
static void tipc_link_sync_xmit(struct tipc_link *link)
{
- struct sk_buff *buf;
+ struct sk_buff *skb;
struct tipc_msg *msg;
- buf = tipc_buf_acquire(INT_H_SIZE);
- if (!buf)
+ skb = tipc_buf_acquire(INT_H_SIZE);
+ if (!skb)
return;
- msg = buf_msg(buf);
+ msg = buf_msg(skb);
tipc_msg_init(msg, BCAST_PROTOCOL, STATE_MSG, INT_H_SIZE, link->addr);
msg_set_last_bcast(msg, link->owner->bclink.acked);
- __tipc_link_xmit(link, buf);
+ __tipc_link_xmit_skb(link, skb);
}
/*
kfree_skb(buf);
}
+struct sk_buff *tipc_skb_queue_next(const struct sk_buff_head *list,
+ const struct sk_buff *skb)
+{
+ if (skb_queue_is_last(list, skb))
+ return NULL;
+ return skb->next;
+}
+
/*
* tipc_link_push_packets - push unsent packets to bearer
*
*/
void tipc_link_push_packets(struct tipc_link *l_ptr)
{
- struct sk_buff *skb;
+ struct sk_buff_head *outqueue = &l_ptr->outqueue;
+ struct sk_buff *skb = l_ptr->next_out;
struct tipc_msg *msg;
u32 next, first;
- while (l_ptr->next_out) {
- skb = l_ptr->next_out;
+ skb_queue_walk_from(outqueue, skb) {
msg = buf_msg(skb);
next = msg_seqno(msg);
- first = buf_seqno(l_ptr->first_out);
+ first = buf_seqno(skb_peek(outqueue));
if (mod(next - first) < l_ptr->queue_limit[0]) {
msg_set_ack(msg, mod(l_ptr->next_in_no - 1));
TIPC_SKB_CB(skb)->bundling = false;
tipc_bearer_send(l_ptr->bearer_id, skb,
&l_ptr->media_addr);
- l_ptr->next_out = skb->next;
+ l_ptr->next_out = tipc_skb_queue_next(outqueue, skb);
} else {
break;
}
}
}
-void tipc_link_retransmit(struct tipc_link *l_ptr, struct sk_buff *buf,
+void tipc_link_retransmit(struct tipc_link *l_ptr, struct sk_buff *skb,
u32 retransmits)
{
struct tipc_msg *msg;
- if (!buf)
+ if (!skb)
return;
- msg = buf_msg(buf);
+ msg = buf_msg(skb);
/* Detect repeated retransmit failures */
if (l_ptr->last_retransmitted == msg_seqno(msg)) {
if (++l_ptr->stale_count > 100) {
- link_retransmit_failure(l_ptr, buf);
+ link_retransmit_failure(l_ptr, skb);
return;
}
} else {
l_ptr->stale_count = 1;
}
- while (retransmits && (buf != l_ptr->next_out) && buf) {
- msg = buf_msg(buf);
+ skb_queue_walk_from(&l_ptr->outqueue, skb) {
+ if (!retransmits || skb == l_ptr->next_out)
+ break;
+ msg = buf_msg(skb);
msg_set_ack(msg, mod(l_ptr->next_in_no - 1));
msg_set_bcast_ack(msg, l_ptr->owner->bclink.last_in);
- tipc_bearer_send(l_ptr->bearer_id, buf, &l_ptr->media_addr);
- buf = buf->next;
+ tipc_bearer_send(l_ptr->bearer_id, skb, &l_ptr->media_addr);
retransmits--;
l_ptr->stats.retransmitted++;
}
}
-/**
- * link_insert_deferred_queue - insert deferred messages back into receive chain
- */
-static struct sk_buff *link_insert_deferred_queue(struct tipc_link *l_ptr,
- struct sk_buff *buf)
+static void link_retrieve_defq(struct tipc_link *link,
+ struct sk_buff_head *list)
{
u32 seq_no;
- if (l_ptr->oldest_deferred_in == NULL)
- return buf;
+ if (skb_queue_empty(&link->deferred_queue))
+ return;
- seq_no = buf_seqno(l_ptr->oldest_deferred_in);
- if (seq_no == mod(l_ptr->next_in_no)) {
- l_ptr->newest_deferred_in->next = buf;
- buf = l_ptr->oldest_deferred_in;
- l_ptr->oldest_deferred_in = NULL;
- l_ptr->deferred_inqueue_sz = 0;
- }
- return buf;
+ seq_no = buf_seqno(skb_peek(&link->deferred_queue));
+ if (seq_no == mod(link->next_in_no))
+ skb_queue_splice_tail_init(&link->deferred_queue, list);
}
/**
/**
* tipc_rcv - process TIPC packets/messages arriving from off-node
- * @head: pointer to message buffer chain
+ * @skb: TIPC packet
* @b_ptr: pointer to bearer message arrived on
*
* Invoked with no locks held. Bearer pointer must point to a valid bearer
* structure (i.e. cannot be NULL), but bearer can be inactive.
*/
-void tipc_rcv(struct sk_buff *head, struct tipc_bearer *b_ptr)
+void tipc_rcv(struct sk_buff *skb, struct tipc_bearer *b_ptr)
{
- while (head) {
- struct tipc_node *n_ptr;
- struct tipc_link *l_ptr;
- struct sk_buff *crs;
- struct sk_buff *buf = head;
- struct tipc_msg *msg;
- u32 seq_no;
- u32 ackd;
- u32 released = 0;
+ struct sk_buff_head head;
+ struct tipc_node *n_ptr;
+ struct tipc_link *l_ptr;
+ struct sk_buff *skb1, *tmp;
+ struct tipc_msg *msg;
+ u32 seq_no;
+ u32 ackd;
+ u32 released;
- head = head->next;
- buf->next = NULL;
+ skb2list(skb, &head);
+ while ((skb = __skb_dequeue(&head))) {
/* Ensure message is well-formed */
- if (unlikely(!link_recv_buf_validate(buf)))
+ if (unlikely(!link_recv_buf_validate(skb)))
goto discard;
/* Ensure message data is a single contiguous unit */
- if (unlikely(skb_linearize(buf)))
+ if (unlikely(skb_linearize(skb)))
goto discard;
/* Handle arrival of a non-unicast link message */
- msg = buf_msg(buf);
+ msg = buf_msg(skb);
if (unlikely(msg_non_seq(msg))) {
if (msg_user(msg) == LINK_CONFIG)
- tipc_disc_rcv(buf, b_ptr);
+ tipc_disc_rcv(skb, b_ptr);
else
- tipc_bclink_rcv(buf);
+ tipc_bclink_rcv(skb);
continue;
}
if (n_ptr->bclink.recv_permitted)
tipc_bclink_acknowledge(n_ptr, msg_bcast_ack(msg));
- crs = l_ptr->first_out;
- while ((crs != l_ptr->next_out) &&
- less_eq(buf_seqno(crs), ackd)) {
- struct sk_buff *next = crs->next;
- kfree_skb(crs);
- crs = next;
- released++;
- }
- if (released) {
- l_ptr->first_out = crs;
- l_ptr->out_queue_size -= released;
+ released = 0;
+ skb_queue_walk_safe(&l_ptr->outqueue, skb1, tmp) {
+ if (skb1 == l_ptr->next_out ||
+ more(buf_seqno(skb1), ackd))
+ break;
+ __skb_unlink(skb1, &l_ptr->outqueue);
+ kfree_skb(skb1);
+ released = 1;
}
/* Try sending any messages link endpoint has pending */
/* Process the incoming packet */
if (unlikely(!link_working_working(l_ptr))) {
if (msg_user(msg) == LINK_PROTOCOL) {
- tipc_link_proto_rcv(l_ptr, buf);
- head = link_insert_deferred_queue(l_ptr, head);
+ tipc_link_proto_rcv(l_ptr, skb);
+ link_retrieve_defq(l_ptr, &head);
tipc_node_unlock(n_ptr);
continue;
}
if (link_working_working(l_ptr)) {
/* Re-insert buffer in front of queue */
- buf->next = head;
- head = buf;
+ __skb_queue_head(&head, skb);
tipc_node_unlock(n_ptr);
continue;
}
/* Link is now in state WORKING_WORKING */
if (unlikely(seq_no != mod(l_ptr->next_in_no))) {
- link_handle_out_of_seq_msg(l_ptr, buf);
- head = link_insert_deferred_queue(l_ptr, head);
+ link_handle_out_of_seq_msg(l_ptr, skb);
+ link_retrieve_defq(l_ptr, &head);
tipc_node_unlock(n_ptr);
continue;
}
l_ptr->next_in_no++;
- if (unlikely(l_ptr->oldest_deferred_in))
- head = link_insert_deferred_queue(l_ptr, head);
+ if (unlikely(!skb_queue_empty(&l_ptr->deferred_queue)))
+ link_retrieve_defq(l_ptr, &head);
if (unlikely(++l_ptr->unacked_window >= TIPC_MIN_LINK_WIN)) {
l_ptr->stats.sent_acks++;
tipc_link_proto_xmit(l_ptr, STATE_MSG, 0, 0, 0, 0, 0);
}
- if (tipc_link_prepare_input(l_ptr, &buf)) {
+ if (tipc_link_prepare_input(l_ptr, &skb)) {
tipc_node_unlock(n_ptr);
continue;
}
tipc_node_unlock(n_ptr);
- msg = buf_msg(buf);
- if (tipc_link_input(l_ptr, buf) != 0)
+
+ if (tipc_link_input(l_ptr, skb) != 0)
goto discard;
continue;
unlock_discard:
tipc_node_unlock(n_ptr);
discard:
- kfree_skb(buf);
+ kfree_skb(skb);
}
}
*
* Returns increase in queue length (i.e. 0 or 1)
*/
-u32 tipc_link_defer_pkt(struct sk_buff **head, struct sk_buff **tail,
- struct sk_buff *buf)
+u32 tipc_link_defer_pkt(struct sk_buff_head *list, struct sk_buff *skb)
{
- struct sk_buff *queue_buf;
- struct sk_buff **prev;
- u32 seq_no = buf_seqno(buf);
-
- buf->next = NULL;
+ struct sk_buff *skb1;
+ u32 seq_no = buf_seqno(skb);
/* Empty queue ? */
- if (*head == NULL) {
- *head = *tail = buf;
+ if (skb_queue_empty(list)) {
+ __skb_queue_tail(list, skb);
return 1;
}
/* Last ? */
- if (less(buf_seqno(*tail), seq_no)) {
- (*tail)->next = buf;
- *tail = buf;
+ if (less(buf_seqno(skb_peek_tail(list)), seq_no)) {
+ __skb_queue_tail(list, skb);
return 1;
}
/* Locate insertion point in queue, then insert; discard if duplicate */
- prev = head;
- queue_buf = *head;
- for (;;) {
- u32 curr_seqno = buf_seqno(queue_buf);
+ skb_queue_walk(list, skb1) {
+ u32 curr_seqno = buf_seqno(skb1);
if (seq_no == curr_seqno) {
- kfree_skb(buf);
+ kfree_skb(skb);
return 0;
}
if (less(seq_no, curr_seqno))
break;
-
- prev = &queue_buf->next;
- queue_buf = queue_buf->next;
}
- buf->next = queue_buf;
- *prev = buf;
+ __skb_queue_before(list, skb1, skb);
return 1;
}
return;
}
- if (tipc_link_defer_pkt(&l_ptr->oldest_deferred_in,
- &l_ptr->newest_deferred_in, buf)) {
- l_ptr->deferred_inqueue_sz++;
+ if (tipc_link_defer_pkt(&l_ptr->deferred_queue, buf)) {
l_ptr->stats.deferred_recv++;
TIPC_SKB_CB(buf)->deferred = true;
- if ((l_ptr->deferred_inqueue_sz % 16) == 1)
+ if ((skb_queue_len(&l_ptr->deferred_queue) % 16) == 1)
tipc_link_proto_xmit(l_ptr, STATE_MSG, 0, 0, 0, 0, 0);
- } else
+ } else {
l_ptr->stats.duplicates++;
+ }
}
/*
if (l_ptr->next_out)
next_sent = buf_seqno(l_ptr->next_out);
msg_set_next_sent(msg, next_sent);
- if (l_ptr->oldest_deferred_in) {
- u32 rec = buf_seqno(l_ptr->oldest_deferred_in);
+ if (!skb_queue_empty(&l_ptr->deferred_queue)) {
+ u32 rec = buf_seqno(skb_peek(&l_ptr->deferred_queue));
gap = mod(rec - mod(l_ptr->next_in_no));
}
msg_set_seq_gap(msg, gap);
}
if (msg_seq_gap(msg)) {
l_ptr->stats.recv_nacks++;
- tipc_link_retransmit(l_ptr, l_ptr->first_out,
+ tipc_link_retransmit(l_ptr, skb_peek(&l_ptr->outqueue),
msg_seq_gap(msg));
}
break;
u32 selector)
{
struct tipc_link *tunnel;
- struct sk_buff *buf;
+ struct sk_buff *skb;
u32 length = msg_size(msg);
tunnel = l_ptr->owner->active_links[selector & 1];
return;
}
msg_set_size(tunnel_hdr, length + INT_H_SIZE);
- buf = tipc_buf_acquire(length + INT_H_SIZE);
- if (!buf) {
+ skb = tipc_buf_acquire(length + INT_H_SIZE);
+ if (!skb) {
pr_warn("%sunable to send tunnel msg\n", link_co_err);
return;
}
- skb_copy_to_linear_data(buf, tunnel_hdr, INT_H_SIZE);
- skb_copy_to_linear_data_offset(buf, INT_H_SIZE, msg, length);
- __tipc_link_xmit(tunnel, buf);
+ skb_copy_to_linear_data(skb, tunnel_hdr, INT_H_SIZE);
+ skb_copy_to_linear_data_offset(skb, INT_H_SIZE, msg, length);
+ __tipc_link_xmit_skb(tunnel, skb);
}
*/
void tipc_link_failover_send_queue(struct tipc_link *l_ptr)
{
- u32 msgcount = l_ptr->out_queue_size;
- struct sk_buff *crs = l_ptr->first_out;
+ u32 msgcount = skb_queue_len(&l_ptr->outqueue);
struct tipc_link *tunnel = l_ptr->owner->active_links[0];
struct tipc_msg tunnel_hdr;
+ struct sk_buff *skb;
int split_bundles;
if (!tunnel)
msg_set_bearer_id(&tunnel_hdr, l_ptr->peer_bearer_id);
msg_set_msgcnt(&tunnel_hdr, msgcount);
- if (!l_ptr->first_out) {
- struct sk_buff *buf;
-
- buf = tipc_buf_acquire(INT_H_SIZE);
- if (buf) {
- skb_copy_to_linear_data(buf, &tunnel_hdr, INT_H_SIZE);
+ if (skb_queue_empty(&l_ptr->outqueue)) {
+ skb = tipc_buf_acquire(INT_H_SIZE);
+ if (skb) {
+ skb_copy_to_linear_data(skb, &tunnel_hdr, INT_H_SIZE);
msg_set_size(&tunnel_hdr, INT_H_SIZE);
- __tipc_link_xmit(tunnel, buf);
+ __tipc_link_xmit_skb(tunnel, skb);
} else {
pr_warn("%sunable to send changeover msg\n",
link_co_err);
split_bundles = (l_ptr->owner->active_links[0] !=
l_ptr->owner->active_links[1]);
- while (crs) {
- struct tipc_msg *msg = buf_msg(crs);
+ skb_queue_walk(&l_ptr->outqueue, skb) {
+ struct tipc_msg *msg = buf_msg(skb);
if ((msg_user(msg) == MSG_BUNDLER) && split_bundles) {
struct tipc_msg *m = msg_get_wrapped(msg);
tipc_link_tunnel_xmit(l_ptr, &tunnel_hdr, msg,
msg_link_selector(msg));
}
- crs = crs->next;
}
}
void tipc_link_dup_queue_xmit(struct tipc_link *l_ptr,
struct tipc_link *tunnel)
{
- struct sk_buff *iter;
+ struct sk_buff *skb;
struct tipc_msg tunnel_hdr;
tipc_msg_init(&tunnel_hdr, CHANGEOVER_PROTOCOL,
DUPLICATE_MSG, INT_H_SIZE, l_ptr->addr);
- msg_set_msgcnt(&tunnel_hdr, l_ptr->out_queue_size);
+ msg_set_msgcnt(&tunnel_hdr, skb_queue_len(&l_ptr->outqueue));
msg_set_bearer_id(&tunnel_hdr, l_ptr->peer_bearer_id);
- iter = l_ptr->first_out;
- while (iter) {
- struct sk_buff *outbuf;
- struct tipc_msg *msg = buf_msg(iter);
+ skb_queue_walk(&l_ptr->outqueue, skb) {
+ struct sk_buff *outskb;
+ struct tipc_msg *msg = buf_msg(skb);
u32 length = msg_size(msg);
if (msg_user(msg) == MSG_BUNDLER)
msg_set_ack(msg, mod(l_ptr->next_in_no - 1)); /* Update */
msg_set_bcast_ack(msg, l_ptr->owner->bclink.last_in);
msg_set_size(&tunnel_hdr, length + INT_H_SIZE);
- outbuf = tipc_buf_acquire(length + INT_H_SIZE);
- if (outbuf == NULL) {
+ outskb = tipc_buf_acquire(length + INT_H_SIZE);
+ if (outskb == NULL) {
pr_warn("%sunable to send duplicate msg\n",
link_co_err);
return;
}
- skb_copy_to_linear_data(outbuf, &tunnel_hdr, INT_H_SIZE);
- skb_copy_to_linear_data_offset(outbuf, INT_H_SIZE, iter->data,
+ skb_copy_to_linear_data(outskb, &tunnel_hdr, INT_H_SIZE);
+ skb_copy_to_linear_data_offset(outskb, INT_H_SIZE, skb->data,
length);
- __tipc_link_xmit(tunnel, outbuf);
+ __tipc_link_xmit_skb(tunnel, outskb);
if (!tipc_link_is_up(l_ptr))
return;
- iter = iter->next;
}
}
projects / cascardo / linux.git / blobdiff