1 files changed, 19 insertions, 2 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 633147cb6bbc..07005ebb47a7 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -399,6 +399,8 @@ extern void			tcp_parse_options(struct sk_buff *skb,
                                                   struct tcp_options_received *opt_rx,
                                                   int estab);
 
+extern u8                       *tcp_parse_md5sig_option(struct tcphdr *th);
+
 /*
  *      TCP v4 functions exported for the inet6 API
  */
@@ -1115,13 +1117,19 @@ struct tcp_md5sig_pool {
 #define TCP_MD5SIG_MAXKEYS      (~(u32)0)       /* really?! */
 
 /* - functions */
+extern int                      tcp_calc_md5_hash(char *md5_hash,
+                                                  struct tcp_md5sig_key *key,
+                                                  int bplen,
+                                                  struct tcphdr *th,
+                                                  unsigned int tcplen,
+                                                  struct tcp_md5sig_pool *hp);
+
 extern int                      tcp_v4_calc_md5_hash(char *md5_hash,
                                                      struct tcp_md5sig_key *key,
                                                      struct sock *sk,
                                                      struct dst_entry *dst,
                                                      struct request_sock *req,
                                                      struct tcphdr *th,
-                                                     int protocol,
                                                      unsigned int tcplen);
 extern struct tcp_md5sig_key    *tcp_v4_md5_lookup(struct sock *sk,
                                                    struct sock *addr_sk);
@@ -1134,6 +1142,16 @@ extern int			tcp_v4_md5_do_add(struct sock *sk,
 extern int                      tcp_v4_md5_do_del(struct sock *sk,
                                                   __be32 addr);
 
+#ifdef CONFIG_TCP_MD5SIG
+#define tcp_twsk_md5_key(twsk)  ((twsk)->tw_md5_keylen ?                 \
+                                 &(struct tcp_md5sig_key) {              \
+                                        .key = (twsk)->tw_md5_key,       \
+                                        .keylen = (twsk)->tw_md5_keylen, \
+                                } : NULL)
+#else
+#define tcp_twsk_md5_key(twsk)  NULL
+#endif
+
 extern struct tcp_md5sig_pool   **tcp_alloc_md5sig_pool(void);
 extern void                     tcp_free_md5sig_pool(void);
 
@@ -1371,7 +1389,6 @@ struct tcp_sock_af_ops {
                                                   struct dst_entry *dst,
                                                   struct request_sock *req,
                                                   struct tcphdr *th,
-                                                  int protocol,
                                                   unsigned int len);
         int                     (*md5_add) (struct sock *sk,
                                             struct sock *addr_sk,