+
+ /* Tunnel link MTU is not large enough? This could be
+ * due to:
+ * 1) Link MTU has just changed or set differently;
+ * 2) Or FAILOVER on the top of a SYNCH message
+ *
+ * The 2nd case should not happen if peer supports
+ * TIPC_TUNNEL_ENHANCED
+ */
+ if (pktlen > tnl->mtu - INT_H_SIZE) {
+ if (mtyp == FAILOVER_MSG &&
+ (tnl->peer_caps & TIPC_TUNNEL_ENHANCED)) {
+ rc = tipc_msg_fragment(skb, &tnlhdr, tnl->mtu,
+ &frags);
+ if (rc) {
+ pr_warn("%sunable to frag msg: rc %d\n",
+ link_co_err, rc);
+ return;
+ }
+ pktcnt += skb_queue_len(&frags) - 1;
+ pktcnt_need_update = true;
+ skb_queue_splice_tail_init(&frags, &tnlq);
+ continue;
+ }
+ /* Unluckily, peer doesn't have TIPC_TUNNEL_ENHANCED
+ * => Just warn it and return!
+ */
+ pr_warn_ratelimited("%stoo large msg <%d, %d>: %d!\n",
+ link_co_err, msg_user(hdr),
+ msg_type(hdr), msg_size(hdr));
+ return;
+ }
+