tipc: increase size of tipc discovery messages

The payload area following the TIPC discovery message header is an
opaque area defined by the media. INT_H_SIZE was enough for
Ethernet/IB/IPv4 but needs to be expanded to carry IPv6 addressing
information.

Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 4 deletions

diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index feef3753615d..5967506833ce 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -86,7 +86,7 @@ static void tipc_disc_init_msg(struct net *net, struct sk_buff *buf, u32 type,
 
         msg = buf_msg(buf);
         tipc_msg_init(tn->own_addr, msg, LINK_CONFIG, type,
-                      INT_H_SIZE, dest_domain);
+                      MAX_H_SIZE, dest_domain);
         msg_set_non_seq(msg, 1);
         msg_set_node_sig(msg, tn->random);
         msg_set_dest_domain(msg, dest_domain);
@@ -249,7 +249,7 @@ void tipc_disc_rcv(struct net *net, struct sk_buff *buf,
 
         /* Send response, if necessary */
         if (respond && (mtyp == DSC_REQ_MSG)) {
-                rbuf = tipc_buf_acquire(INT_H_SIZE);
+                rbuf = tipc_buf_acquire(MAX_H_SIZE);
                 if (rbuf) {
                         tipc_disc_init_msg(net, rbuf, DSC_RESP_MSG, bearer);
                         tipc_bearer_send(net, bearer->identity, rbuf, &maddr);
@@ -359,8 +359,7 @@ int tipc_disc_create(struct net *net, struct tipc_bearer *b_ptr,
         req = kmalloc(sizeof(*req), GFP_ATOMIC);
         if (!req)
                 return -ENOMEM;
-
-        req->buf = tipc_buf_acquire(INT_H_SIZE);
+        req->buf = tipc_buf_acquire(MAX_H_SIZE);
         if (!req->buf) {
                 kfree(req);
                 return -ENOMEM;