Phonet: implement per-socket destination/peer address

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 17 insertions, 7 deletions

diff --git a/include/net/phonet/phonet.h b/include/net/phonet/phonet.h
index 5395e09187df..68e509750caa 100644
--- a/include/net/phonet/phonet.h
+++ b/include/net/phonet/phonet.h
@@ -36,6 +36,7 @@
 struct pn_sock {
         struct sock     sk;
         u16             sobject;
+        u16             dobject;
         u8              resource;
 };
 
diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index 1072b2c19d31..30cc676c35fd 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -110,6 +110,7 @@ static int pn_socket_create(struct net *net, struct socket *sock, int protocol,
         sk->sk_protocol = protocol;
         pn = pn_sk(sk);
         pn->sobject = 0;
+        pn->dobject = 0;
         pn->resource = 0;
         sk->sk_prot->init(sk);
         err = 0;
@@ -242,8 +243,18 @@ int pn_skb_send(struct sock *sk, struct sk_buff *skb,
         struct net_device *dev;
         struct pn_sock *pn = pn_sk(sk);
         int err;
-        u16 src;
-        u8 daddr = pn_sockaddr_get_addr(target), saddr = PN_NO_ADDR;
+        u16 src, dst;
+        u8 daddr, saddr, res;
+
+        src = pn->sobject;
+        if (target != NULL) {
+                dst = pn_sockaddr_get_object(target);
+                res = pn_sockaddr_get_resource(target);
+        } else {
+                dst = pn->dobject;
+                res = pn->resource;
+        }
+        daddr = pn_addr(dst);
 
         err = -EHOSTUNREACH;
         if (sk->sk_bound_dev_if)
@@ -271,12 +282,10 @@ int pn_skb_send(struct sock *sk, struct sk_buff *skb,
         if (saddr == PN_NO_ADDR)
                 goto drop;
 
-        src = pn->sobject;
         if (!pn_addr(src))
                 src = pn_object(saddr, pn_obj(src));
 
-        err = pn_send(skb, dev, pn_sockaddr_get_object(target),
-                        src, pn_sockaddr_get_resource(target), 0);
+        err = pn_send(skb, dev, dst, src, res, 0);
         dev_put(dev);
         return err;
 
diff --git a/net/phonet/socket.c b/net/phonet/socket.c
index ceb5143f5ef9..65a03338769e 100644
--- a/net/phonet/socket.c
+++ b/net/phonet/socket.c
@@ -633,8 +633,8 @@ static int pn_sock_seq_show(struct seq_file *seq, void *v)
 
                 seq_printf(seq, "%2d %04X:%04X:%02X %02X %08X:%08X %5d %lu "
                         "%d %p %d%n",
-                        sk->sk_protocol, pn->sobject, 0, pn->resource,
-                        sk->sk_state,
+                        sk->sk_protocol, pn->sobject, pn->dobject,
+                        pn->resource, sk->sk_state,
                         sk_wmem_alloc_get(sk), sk_rmem_alloc_get(sk),
                         sock_i_uid(sk), sock_i_ino(sk),
                         atomic_read(&sk->sk_refcnt), sk,