diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index 3b7bd2174330d..08d64e7527cbf 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -112,6 +112,11 @@ static struct tipc_bc_base *tipc_bc_base(struct net *net)
return tipc_net(net)->bcbase;
}
+static struct tipc_link *tipc_bc_sndlink(struct net *net)
+{
+ return tipc_net(net)->bcl;
+}
+
/**
* tipc_nmap_equal - test for equality of node maps
*/
@@ -121,6 +126,7 @@ static int tipc_nmap_equal(struct tipc_node_map *nm_a,
return !memcmp(nm_a, nm_b, sizeof(*nm_a));
}
+static void tipc_bcbearer_xmit(struct net *net, struct sk_buff_head *xmitq);
static void tipc_nmap_diff(struct tipc_node_map *nm_a,
struct tipc_node_map *nm_b,
struct tipc_node_map *nm_diff);
@@ -148,14 +154,14 @@ uint tipc_bcast_get_mtu(void)
return MAX_PKT_DEFAULT_MCAST;
}
-static u32 bcbuf_acks(struct sk_buff *buf)
+static u16 bcbuf_acks(struct sk_buff *skb)
{
- return (u32)(unsigned long)TIPC_SKB_CB(buf)->handle;
+ return TIPC_SKB_CB(skb)->ackers;
}
-static void bcbuf_set_acks(struct sk_buff *buf, u32 acks)
+static void bcbuf_set_acks(struct sk_buff *buf, u16 ackers)
{
- TIPC_SKB_CB(buf)->handle = (void *)(unsigned long)acks;
+ TIPC_SKB_CB(buf)->ackers = ackers;
}
static void bcbuf_decr_acks(struct sk_buff *buf)
@@ -166,9 +172,10 @@ static void bcbuf_decr_acks(struct sk_buff *buf)
void tipc_bclink_add_node(struct net *net, u32 addr)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
-
+ struct tipc_link *l = tipc_bc_sndlink(net);
tipc_bclink_lock(net);
tipc_nmap_add(&tn->bcbase->bcast_nodes, addr);
+ tipc_link_add_bc_peer(l);
tipc_bclink_unlock(net);
}
@@ -178,6 +185,7 @@ void tipc_bclink_remove_node(struct net *net, u32 addr)
tipc_bclink_lock(net);
tipc_nmap_remove(&tn->bcbase->bcast_nodes, addr);
+ tn->bcl->ackers--;
/* Last node? => reset backlog queue */
if (!tn->bcbase->bcast_nodes.count)
@@ -295,7 +303,6 @@ void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked)
if (unlikely(!n_ptr->bclink.recv_permitted))
return;
-
tipc_bclink_lock(net);
/* Bail out if tx queue is empty (no clean up is required) */
@@ -324,13 +331,11 @@ void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked)
less_eq(acked, n_ptr->bclink.acked))
goto exit;
}
-
/* Skip over packets that node has previously acknowledged */
skb_queue_walk(&tn->bcl->transmq, skb) {
if (more(buf_seqno(skb), n_ptr->bclink.acked))
break;
}
-
/* Update packets that node is now acknowledging */
skb_queue_walk_from_safe(&tn->bcl->transmq, skb, tmp) {
if (more(buf_seqno(skb), acked))
@@ -367,6 +372,7 @@ void tipc_bclink_update_link_state(struct tipc_node *n_ptr,
struct sk_buff *buf;
struct net *net = n_ptr->net;
struct tipc_net *tn = net_generic(net, tipc_net_id);
+ struct tipc_link *bcl = tn->bcl;
/* Ignore "stale" link state info */
if (less_eq(last_sent, n_ptr->bclink.last_in))
@@ -375,6 +381,10 @@ void tipc_bclink_update_link_state(struct tipc_node *n_ptr,
/* Update link synchronization state; quit if in sync */
bclink_update_last_sent(n_ptr, last_sent);
+ /* This is a good location for statistical profiling */
+ bcl->stats.queue_sz_counts++;
+ bcl->stats.accu_queue_sz += skb_queue_len(&bcl->transmq);
+
if (n_ptr->bclink.last_sent == n_ptr->bclink.last_in)
return;
@@ -468,52 +478,35 @@ static void bclink_peek_nack(struct net *net, struct tipc_msg *msg)
*/
int tipc_bcast_xmit(struct net *net, struct sk_buff_head *list)
{
- struct tipc_net *tn = net_generic(net, tipc_net_id);
- struct tipc_link *bcl = tn->bcl;
- struct tipc_bc_base *bclink = tn->bcbase;
+ struct tipc_link *l = tipc_bc_sndlink(net);
+ struct sk_buff_head xmitq, inputq, rcvq;
int rc = 0;
- int bc = 0;
- struct sk_buff *skb;
- struct sk_buff_head arrvq;
- struct sk_buff_head inputq;
- /* Prepare clone of message for local node */
- skb = tipc_msg_reassemble(list);
- if (unlikely(!skb))
- return -EHOSTUNREACH;
+ __skb_queue_head_init(&rcvq);
+ __skb_queue_head_init(&xmitq);
+ skb_queue_head_init(&inputq);
- /* Broadcast to all nodes */
- if (likely(bclink)) {
- tipc_bclink_lock(net);
- if (likely(bclink->bcast_nodes.count)) {
- rc = __tipc_link_xmit(net, bcl, list);
- if (likely(!rc)) {
- u32 len = skb_queue_len(&bcl->transmq);
-
- bclink_set_last_sent(net);
- bcl->stats.queue_sz_counts++;
- bcl->stats.accu_queue_sz += len;
- }
- bc = 1;
- }
- tipc_bclink_unlock(net);
- }
+ /* Prepare message clone for local node */
+ if (unlikely(!tipc_msg_reassemble(list, &rcvq)))
+ return -EHOSTUNREACH;
- if (unlikely(!bc))
- __skb_queue_purge(list);
+ tipc_bcast_lock(net);
+ if (tipc_link_bc_peers(l))
+ rc = tipc_link_xmit(l, list, &xmitq);
+ bclink_set_last_sent(net);
+ tipc_bcast_unlock(net);
+ /* Don't send to local node if adding to link failed */
if (unlikely(rc)) {
- kfree_skb(skb);
+ __skb_queue_purge(&rcvq);
return rc;
}
- /* Deliver message clone */
- __skb_queue_head_init(&arrvq);
- skb_queue_head_init(&inputq);
- __skb_queue_tail(&arrvq, skb);
- tipc_sk_mcast_rcv(net, &arrvq, &inputq);
- return rc;
+ /* Broadcast to all nodes, inluding local node */
+ tipc_bcbearer_xmit(net, &xmitq);
+ tipc_sk_mcast_rcv(net, &rcvq, &inputq);
+ __skb_queue_purge(list);
+ return 0;
}
-
/**
* bclink_accept_pkt - accept an incoming, in-sequence broadcast packet
*
@@ -564,7 +557,6 @@ void tipc_bclink_rcv(struct net *net, struct sk_buff *buf)
node = tipc_node_find(net, msg_prevnode(msg));
if (unlikely(!node))
goto exit;
-
tipc_node_lock(node);
if (unlikely(!node->bclink.recv_permitted))
goto unlock;
@@ -589,7 +581,6 @@ void tipc_bclink_rcv(struct net *net, struct sk_buff *buf)
tipc_node_put(node);
goto exit;
}
-
/* Handle in-sequence broadcast message */
seqno = msg_seqno(msg);
next_in = mod(node->bclink.last_in + 1);
@@ -778,6 +769,19 @@ static int tipc_bcbearer_send(struct net *net, struct sk_buff *buf,
return 0;
}
+static void tipc_bcbearer_xmit(struct net *net, struct sk_buff_head *xmitq)
+{
+ struct sk_buff *skb, *tmp;
+
+ skb_queue_walk_safe(xmitq, skb, tmp) {
+ __skb_dequeue(xmitq);
+ tipc_bcbearer_send(net, skb, NULL, NULL);
+
+ /* Until we remove cloning in tipc_l2_send_msg(): */
+ kfree_skb(skb);
+ }
+}
+
/**
* tipc_bcbearer_sort - create sets of bearer pairs used by broadcast bearer
*/
diff --git a/net/tipc/link.c b/net/tipc/link.c
index dfc738e5cff9d..363da5f857047 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -158,6 +158,21 @@ int tipc_link_is_active(struct tipc_link *l)
return (node_active_link(n, 0) == l) || (node_active_link(n, 1) == l);
}
+void tipc_link_add_bc_peer(struct tipc_link *l)
+{
+ l->ackers++;
+}
+
+void tipc_link_remove_bc_peer(struct tipc_link *l)
+{
+ l->ackers--;
+}
+
+int tipc_link_bc_peers(struct tipc_link *l)
+{
+ return l->ackers;
+}
+
static u32 link_own_addr(struct tipc_link *l)
{
return msg_prevnode(l->pmsg);
@@ -258,6 +273,7 @@ bool tipc_link_bc_create(struct tipc_node *n, int mtu, int window,
l = *link;
strcpy(l->name, tipc_bclink_name);
tipc_link_reset(l);
+ l->ackers = 0;
return true;
}
@@ -898,8 +914,7 @@ static void link_retransmit_failure(struct tipc_link *l_ptr,
char addr_string[16];
pr_info("Msg seq number: %u, ", msg_seqno(msg));
- pr_cont("Outstanding acks: %lu\n",
- (unsigned long) TIPC_SKB_CB(buf)->handle);
+ pr_cont("Outstanding acks: %u\n", TIPC_SKB_CB(buf)->ackers);
n_ptr = tipc_bclink_retransmit_to(net);
diff --git a/net/tipc/link.h b/net/tipc/link.h
index be24d1fd51320..9c4acc26b3b12 100644
--- a/net/tipc/link.h
+++ b/net/tipc/link.h
@@ -262,5 +262,9 @@ int tipc_nl_parse_link_prop(struct nlattr *prop, struct nlattr *props[]);
int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq);
int tipc_link_rcv(struct tipc_link *l, struct sk_buff *skb,
struct sk_buff_head *xmitq);
+void tipc_link_build_ack_msg(struct tipc_link *l, struct sk_buff_head *xmitq);
+void tipc_link_add_bc_peer(struct tipc_link *l);
+void tipc_link_remove_bc_peer(struct tipc_link *l);
+int tipc_link_bc_peers(struct tipc_link *l);
#endif
diff --git a/net/tipc/msg.c b/net/tipc/msg.c
index 26d38b3d8760f..5b47468739e77 100644
--- a/net/tipc/msg.c
+++ b/net/tipc/msg.c
@@ -565,18 +565,22 @@ bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, int *err)
/* 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_head *list)
+bool tipc_msg_reassemble(struct sk_buff_head *list, struct sk_buff_head *rcvq)
{
- struct sk_buff *skb;
+ struct sk_buff *skb, *_skb;
struct sk_buff *frag = NULL;
struct sk_buff *head = NULL;
- int hdr_sz;
+ int hdr_len;
/* Copy header if single buffer */
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);
+ hdr_len = skb_headroom(skb) + msg_hdr_sz(buf_msg(skb));
+ _skb = __pskb_copy(skb, hdr_len, GFP_ATOMIC);
+ if (!_skb)
+ return false;
+ __skb_queue_tail(rcvq, _skb);
+ return true;
}
/* Clone all fragments and reassemble */
@@ -590,11 +594,12 @@ struct sk_buff *tipc_msg_reassemble(struct sk_buff_head *list)
if (!head)
goto error;
}
- return frag;
+ __skb_queue_tail(rcvq, frag);
+ return true;
error:
pr_warn("Failed do clone local mcast rcv buffer\n");
kfree_skb(head);
- return NULL;
+ return false;
}
/* tipc_skb_queue_sorted(); sort pkt into list according to sequence number
diff --git a/net/tipc/msg.h b/net/tipc/msg.h
index 799782c47f6c2..fbf51fa1075d0 100644
--- a/net/tipc/msg.h
+++ b/net/tipc/msg.h
@@ -790,7 +790,7 @@ bool tipc_msg_extract(struct sk_buff *skb, struct sk_buff **iskb, int *pos);
int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
int offset, int dsz, int mtu, struct sk_buff_head *list);
bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, int *err);
-struct sk_buff *tipc_msg_reassemble(struct sk_buff_head *list);
+bool tipc_msg_reassemble(struct sk_buff_head *list, struct sk_buff_head *rcvq);
void __tipc_skb_queue_sorted(struct sk_buff_head *list, u16 seqno,
struct sk_buff *skb);