2 files changed, 6 insertions, 1 deletions

diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
index e50e2b890c6d..91888967d3e3 100644
--- a/include/net/inet_connection_sock.h
+++ b/include/net/inet_connection_sock.h
@@ -60,6 +60,7 @@ struct inet_connection_sock_af_ops {
  * @icsk_timeout:          Timeout
  * @icsk_retransmit_timer: Resend (no ack)
  * @icsk_rto:              Retransmit timeout
+ * @icsk_pmtu_cookie       Last pmtu seen by socket
  * @icsk_ca_ops            Pluggable congestion control hook
  * @icsk_af_ops            Operations which are AF_INET{4,6} specific
  * @icsk_ca_state:         Congestion control state
@@ -68,6 +69,7 @@ struct inet_connection_sock_af_ops {
  * @icsk_backoff:          Backoff
  * @icsk_syn_retries:      Number of allowed SYN (or equivalent) retries
  * @icsk_probes_out:       unanswered 0 window probes
+ * @icsk_ext_hdr_len:      Network protocol overhead (IP/IPv6 options)
  * @icsk_ack:              Delayed ACK control data
  */
 struct inet_connection_sock {
@@ -79,15 +81,17 @@ struct inet_connection_sock {
         struct timer_list         icsk_retransmit_timer;
         struct timer_list         icsk_delack_timer;
         __u32                     icsk_rto;
+        __u32                     icsk_pmtu_cookie;
         struct tcp_congestion_ops *icsk_ca_ops;
         struct inet_connection_sock_af_ops *icsk_af_ops;
+        unsigned int              (*icsk_sync_mss)(struct sock *sk, u32 pmtu);
         __u8                      icsk_ca_state;
         __u8                      icsk_retransmits;
         __u8                      icsk_pending;
         __u8                      icsk_backoff;
         __u8                      icsk_syn_retries;
         __u8                      icsk_probes_out;
-        /* 2 BYTES HOLE, TRY TO PACK! */
+        __u16                     icsk_ext_hdr_len;
         struct {
                 __u8              pending;       /* ACK is pending                         */
                 __u8              quick;         /* Scheduled number of quick acks         */
diff --git a/include/net/protocol.h b/include/net/protocol.h
index 357691f6a45f..a29cb29647d0 100644
--- a/include/net/protocol.h
+++ b/include/net/protocol.h
@@ -76,6 +76,7 @@ struct inet_protosw {
 };
 #define INET_PROTOSW_REUSE 0x01      /* Are ports automatically reusable? */
 #define INET_PROTOSW_PERMANENT 0x02  /* Permanent protocols are unremovable. */
+#define INET_PROTOSW_ICSK      0x04  /* Is this an inet_connection_sock? */
 
 extern struct net_protocol *inet_protocol_base;
 extern struct net_protocol *inet_protos[MAX_INET_PROTOS];