smc: CLC handshake (incl. preparation steps)

* CLC (Connection Layer Control) handshake

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 22 insertions, 0 deletions

diff --git a/net/smc/smc.h b/net/smc/smc.h
index e87d79867099..5946aaecdebf 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -28,6 +28,12 @@ enum smc_state {		/* possible states of an SMC socket */
 struct smc_sock {                               /* smc sock container */
         struct sock             sk;
         struct socket           *clcsock;       /* internal tcp socket */
+        struct sockaddr         *addr;          /* inet connect address */
+        struct smc_sock         *listen_smc;    /* listen parent */
+        struct work_struct      tcp_listen_work;/* handle tcp socket accepts */
+        struct work_struct      smc_listen_work;/* prepare new accept socket */
+        struct list_head        accept_q;       /* sockets to be accepted */
+        spinlock_t              accept_q_lock;  /* protects accept_q */
         bool                    use_fallback;   /* fallback to tcp */
 };
 
@@ -40,4 +46,20 @@ static inline struct smc_sock *smc_sk(const struct sock *sk)
 
 extern u8       local_systemid[SMC_SYSTEMID_LEN]; /* unique system identifier */
 
+#ifdef CONFIG_XFRM
+static inline bool using_ipsec(struct smc_sock *smc)
+{
+        return (smc->clcsock->sk->sk_policy[0] ||
+                smc->clcsock->sk->sk_policy[1]) ? 1 : 0;
+}
+#else
+static inline bool using_ipsec(struct smc_sock *smc)
+{
+        return 0;
+}
+#endif
+
+int smc_netinfo_by_tcpsk(struct socket *clcsock, __be32 *subnet,
+                         u8 *prefix_len);
+
 #endif  /* __SMC_H */