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-rw-r--r--net/tipc/group.c14
-rw-r--r--net/tipc/msg.h11
-rw-r--r--net/tipc/socket.c56
3 files changed, 74 insertions, 7 deletions
diff --git a/net/tipc/group.c b/net/tipc/group.c
index 16aaaa97a005..ffac2f33fce2 100644
--- a/net/tipc/group.c
+++ b/net/tipc/group.c
@@ -413,10 +413,22 @@ void tipc_group_filter_msg(struct tipc_group *grp, struct sk_buff_head *inputq,
if (!tipc_group_is_receiver(m))
goto drop;
+ m->bc_rcv_nxt = msg_grp_bc_seqno(hdr) + 1;
+
+ /* Drop multicast here if not for this member */
+ if (mtyp == TIPC_GRP_MCAST_MSG) {
+ if (msg_nameinst(hdr) != grp->instance) {
+ m->bc_rcv_nxt = msg_grp_bc_seqno(hdr) + 1;
+ tipc_group_update_rcv_win(grp, msg_blocks(hdr),
+ node, port, xmitq);
+ kfree_skb(skb);
+ return;
+ }
+ }
+
TIPC_SKB_CB(skb)->orig_member = m->instance;
__skb_queue_tail(inputq, skb);
- m->bc_rcv_nxt = msg_grp_bc_seqno(hdr) + 1;
return;
drop:
kfree_skb(skb);
diff --git a/net/tipc/msg.h b/net/tipc/msg.h
index f5033f4a7951..d6f98215267e 100644
--- a/net/tipc/msg.h
+++ b/net/tipc/msg.h
@@ -67,7 +67,8 @@ struct plist;
#define TIPC_DIRECT_MSG 3
#define TIPC_GRP_MEMBER_EVT 4
#define TIPC_GRP_BCAST_MSG 5
-#define TIPC_GRP_UCAST_MSG 6
+#define TIPC_GRP_MCAST_MSG 6
+#define TIPC_GRP_UCAST_MSG 7
/*
* Internal message users
@@ -195,6 +196,11 @@ static inline u32 msg_size(struct tipc_msg *m)
return msg_bits(m, 0, 0, 0x1ffff);
}
+static inline u32 msg_blocks(struct tipc_msg *m)
+{
+ return (msg_size(m) / 1024) + 1;
+}
+
static inline u32 msg_data_sz(struct tipc_msg *m)
{
return msg_size(m) - msg_hdr_sz(m);
@@ -279,7 +285,8 @@ static inline u32 msg_mcast(struct tipc_msg *m)
{
int mtyp = msg_type(m);
- return ((mtyp == TIPC_MCAST_MSG) || (mtyp == TIPC_GRP_BCAST_MSG));
+ return ((mtyp == TIPC_MCAST_MSG) || (mtyp == TIPC_GRP_BCAST_MSG) ||
+ (mtyp == TIPC_GRP_MCAST_MSG));
}
static inline u32 msg_connected(struct tipc_msg *m)
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 66165e12d2f4..8fdd969e12bd 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -999,6 +999,7 @@ static int tipc_send_group_anycast(struct socket *sock, struct msghdr *m,
static int tipc_send_group_bcast(struct socket *sock, struct msghdr *m,
int dlen, long timeout)
{
+ DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name);
struct sock *sk = sock->sk;
struct net *net = sock_net(sk);
struct tipc_sock *tsk = tipc_sk(sk);
@@ -1021,11 +1022,16 @@ static int tipc_send_group_bcast(struct socket *sock, struct msghdr *m,
return rc;
/* Complete message header */
- msg_set_type(hdr, TIPC_GRP_BCAST_MSG);
+ if (dest) {
+ msg_set_type(hdr, TIPC_GRP_MCAST_MSG);
+ msg_set_nameinst(hdr, dest->addr.name.name.instance);
+ } else {
+ msg_set_type(hdr, TIPC_GRP_BCAST_MSG);
+ msg_set_nameinst(hdr, 0);
+ }
msg_set_hdr_sz(hdr, GROUP_H_SIZE);
msg_set_destport(hdr, 0);
msg_set_destnode(hdr, 0);
- msg_set_nameinst(hdr, 0);
msg_set_grp_bc_seqno(hdr, tipc_group_bc_snd_nxt(grp));
/* Build message as chain of buffers */
@@ -1046,6 +1052,48 @@ static int tipc_send_group_bcast(struct socket *sock, struct msghdr *m,
}
/**
+ * tipc_send_group_mcast - send message to all members with given identity
+ * @sock: socket structure
+ * @m: message to send
+ * @dlen: total length of message data
+ * @timeout: timeout to wait for wakeup
+ *
+ * Called from function tipc_sendmsg(), which has done all sanity checks
+ * Returns the number of bytes sent on success, or errno
+ */
+static int tipc_send_group_mcast(struct socket *sock, struct msghdr *m,
+ int dlen, long timeout)
+{
+ struct sock *sk = sock->sk;
+ DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name);
+ struct tipc_name_seq *seq = &dest->addr.nameseq;
+ struct tipc_sock *tsk = tipc_sk(sk);
+ struct tipc_group *grp = tsk->group;
+ struct net *net = sock_net(sk);
+ u32 domain, exclude, dstcnt;
+ struct list_head dsts;
+
+ INIT_LIST_HEAD(&dsts);
+
+ if (seq->lower != seq->upper)
+ return -ENOTSUPP;
+
+ domain = addr_domain(net, dest->scope);
+ exclude = tipc_group_exclude(grp);
+ if (!tipc_nametbl_lookup(net, seq->type, seq->lower, domain,
+ &dsts, &dstcnt, exclude, true))
+ return -EHOSTUNREACH;
+
+ if (dstcnt == 1) {
+ tipc_dest_pop(&dsts, &dest->addr.id.node, &dest->addr.id.ref);
+ return tipc_send_group_unicast(sock, m, dlen, timeout);
+ }
+
+ tipc_dest_list_purge(&dsts);
+ return tipc_send_group_bcast(sock, m, dlen, timeout);
+}
+
+/**
* tipc_sk_mcast_rcv - Deliver multicast messages to all destination sockets
* @arrvq: queue with arriving messages, to be cloned after destination lookup
* @inputq: queue with cloned messages, delivered to socket after dest lookup
@@ -1213,6 +1261,8 @@ static int __tipc_sendmsg(struct socket *sock, struct msghdr *m, size_t dlen)
return tipc_send_group_anycast(sock, m, dlen, timeout);
if (dest->addrtype == TIPC_ADDR_ID)
return tipc_send_group_unicast(sock, m, dlen, timeout);
+ if (dest->addrtype == TIPC_ADDR_MCAST)
+ return tipc_send_group_mcast(sock, m, dlen, timeout);
return -EINVAL;
}
@@ -2022,8 +2072,6 @@ static void tipc_sk_filter_rcv(struct sock *sk, struct sk_buff *skb,
if (unlikely(!msg_isdata(hdr)))
tipc_sk_proto_rcv(sk, &inputq, xmitq);
- else if (unlikely(msg_type(hdr) > TIPC_GRP_UCAST_MSG))
- return kfree_skb(skb);
if (unlikely(grp))
tipc_group_filter_msg(grp, &inputq, xmitq);