diff options
| author | Ursula Braun | 2017-01-09 16:55:17 +0100 |
|---|---|---|
| committer | David S. Miller | 2017-01-09 16:07:39 -0500 |
| commit | 0cfdd8f92cac01afbb12e4500514036a2b78756b (patch) | |
| tree | f868a5e65725183509466c9cf16b0a343115c057 /net/smc/smc.h | |
| parent | a046d57da19f812216f393e7c535f5858f793ac3 (diff) | |
smc: connection and link group creation
* create smc_connection for SMC-sockets
* determine suitable link group for a connection
* create a new link group if necessary
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc.h')
| -rw-r--r-- | net/smc/smc.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/net/smc/smc.h b/net/smc/smc.h index 5946aaecdebf..11265bde4655 100644 --- a/net/smc/smc.h +++ b/net/smc/smc.h @@ -14,6 +14,8 @@ #include <linux/types.h> #include <net/sock.h> +#include "smc_ib.h" + #define SMCPROTO_SMC 0 /* SMC protocol */ #define SMC_MAX_PORTS 2 /* Max # of ports */ @@ -25,9 +27,19 @@ enum smc_state { /* possible states of an SMC socket */ SMC_LISTEN = 10, }; +struct smc_link_group; + +struct smc_connection { + struct rb_node alert_node; + struct smc_link_group *lgr; /* link group of connection */ + u32 alert_token_local; /* unique conn. id */ + u8 peer_conn_idx; /* from tcp handshake */ +}; + struct smc_sock { /* smc sock container */ struct sock sk; struct socket *clcsock; /* internal tcp socket */ + struct smc_connection conn; /* smc connection */ struct sockaddr *addr; /* inet connect address */ struct smc_sock *listen_smc; /* listen parent */ struct work_struct tcp_listen_work;/* handle tcp socket accepts */ @@ -46,6 +58,24 @@ static inline struct smc_sock *smc_sk(const struct sock *sk) extern u8 local_systemid[SMC_SYSTEMID_LEN]; /* unique system identifier */ +/* convert an u32 value into network byte order, store it into a 3 byte field */ +static inline void hton24(u8 *net, u32 host) +{ + __be32 t; + + t = cpu_to_be32(host); + memcpy(net, ((u8 *)&t) + 1, 3); +} + +/* convert a received 3 byte field into host byte order*/ +static inline u32 ntoh24(u8 *net) +{ + __be32 t = 0; + + memcpy(((u8 *)&t) + 1, net, 3); + return be32_to_cpu(t); +} + #ifdef CONFIG_XFRM static inline bool using_ipsec(struct smc_sock *smc) { @@ -59,7 +89,13 @@ static inline bool using_ipsec(struct smc_sock *smc) } #endif +struct smc_clc_msg_local; + int smc_netinfo_by_tcpsk(struct socket *clcsock, __be32 *subnet, u8 *prefix_len); +void smc_conn_free(struct smc_connection *conn); +int smc_conn_create(struct smc_sock *smc, __be32 peer_in_addr, + struct smc_ib_device *smcibdev, u8 ibport, + struct smc_clc_msg_local *lcl, int srv_first_contact); #endif /* __SMC_H */ |