tcp md5sig: Let the caller pass appropriate key for tcp_v{4,6}_do_calc_md5_hash().

As we do for other socket/timewait-socket specific parameters,
let the callers pass appropriate arguments to
tcp_v{4,6}_do_calc_md5_hash().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index eac26b73bcc3..07005ebb47a7 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1142,6 +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);