diff options
Diffstat (limited to 'net/rxrpc/ar-internal.h')
-rw-r--r-- | net/rxrpc/ar-internal.h | 172 |
1 files changed, 88 insertions, 84 deletions
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h index c168268467cd..702db72196fb 100644 --- a/net/rxrpc/ar-internal.h +++ b/net/rxrpc/ar-internal.h @@ -37,6 +37,8 @@ struct rxrpc_crypt { #define rxrpc_queue_call(CALL) rxrpc_queue_work(&(CALL)->processor) #define rxrpc_queue_conn(CONN) rxrpc_queue_work(&(CONN)->processor) +struct rxrpc_connection; + /* * sk_state for RxRPC sockets */ @@ -57,7 +59,6 @@ struct rxrpc_sock { struct sock sk; rxrpc_interceptor_t interceptor; /* kernel service Rx interceptor function */ struct rxrpc_local *local; /* local endpoint */ - struct rxrpc_connection *conn; /* exclusive virtual connection */ struct list_head listen_link; /* link in the local endpoint's listen list */ struct list_head secureq; /* calls awaiting connection security clearance */ struct list_head acceptq; /* calls awaiting acceptance */ @@ -66,13 +67,13 @@ struct rxrpc_sock { struct rb_root calls; /* outstanding calls on this socket */ unsigned long flags; #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ -#define RXRPC_SOCK_EXCLUSIVE_CONN 1 /* exclusive connection for a client socket */ rwlock_t call_lock; /* lock for calls */ u32 min_sec_level; /* minimum security level */ #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT + bool exclusive; /* Exclusive connection for a client socket */ + sa_family_t family; /* Protocol family created with */ struct sockaddr_rxrpc srx; /* local address */ struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ - sa_family_t proto; /* protocol created with */ }; #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) @@ -185,7 +186,8 @@ struct rxrpc_local { struct sk_buff_head accept_queue; /* incoming calls awaiting acceptance */ struct sk_buff_head reject_queue; /* packets awaiting rejection */ struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */ - struct mutex conn_lock; /* Client connection creation lock */ + struct rb_root client_conns; /* Client connections by socket params */ + spinlock_t client_conns_lock; /* Lock for client_conns */ spinlock_t lock; /* access lock */ rwlock_t services_lock; /* lock for services list */ int debug_id; /* debug ID for printks */ @@ -205,6 +207,8 @@ struct rxrpc_peer { struct rxrpc_local *local; struct hlist_head error_targets; /* targets for net error distribution */ struct work_struct error_distributor; + struct rb_root service_conns; /* Service connections */ + rwlock_t conn_lock; spinlock_t lock; /* access lock */ unsigned int if_mtu; /* interface MTU for this peer */ unsigned int mtu; /* network MTU for this peer */ @@ -224,66 +228,63 @@ struct rxrpc_peer { }; /* - * RxRPC point-to-point transport / connection manager definition - * - handles a bundle of connections between two endpoints - * - matched by { local, peer } - */ -struct rxrpc_transport { - struct rxrpc_local *local; /* local transport endpoint */ - struct rxrpc_peer *peer; /* remote transport endpoint */ - struct rb_root bundles; /* client connection bundles on this transport */ - struct rb_root client_conns; /* client connections on this transport */ - struct rb_root server_conns; /* server connections on this transport */ - struct list_head link; /* link in master session list */ - unsigned long put_time; /* time at which to reap */ - spinlock_t client_lock; /* client connection allocation lock */ - rwlock_t conn_lock; /* lock for active/dead connections */ - atomic_t usage; - int debug_id; /* debug ID for printks */ - unsigned int conn_idcounter; /* connection ID counter (client) */ + * Keys for matching a connection. + */ +struct rxrpc_conn_proto { + unsigned long hash_key; + struct rxrpc_local *local; /* Representation of local endpoint */ + u32 epoch; /* epoch of this connection */ + u32 cid; /* connection ID */ + u8 in_clientflag; /* RXRPC_CLIENT_INITIATED if we are server */ + u8 addr_size; /* Size of the address */ + sa_family_t family; /* Transport protocol */ + __be16 port; /* Peer UDP/UDP6 port */ + union { /* Peer address */ + struct in_addr ipv4_addr; + struct in6_addr ipv6_addr; + u32 raw_addr[0]; + }; }; -/* - * RxRPC client connection bundle - * - matched by { transport, service_id, key } - */ -struct rxrpc_conn_bundle { - struct rb_node node; /* node in transport's lookup tree */ - struct list_head unused_conns; /* unused connections in this bundle */ - struct list_head avail_conns; /* available connections in this bundle */ - struct list_head busy_conns; /* busy connections in this bundle */ - struct key *key; /* security for this bundle */ - wait_queue_head_t chanwait; /* wait for channel to become available */ - atomic_t usage; - int debug_id; /* debug ID for printks */ - unsigned short num_conns; /* number of connections in this bundle */ - u16 service_id; /* Service ID for this bundle */ - u8 security_ix; /* security type */ +struct rxrpc_conn_parameters { + struct rxrpc_local *local; /* Representation of local endpoint */ + struct rxrpc_peer *peer; /* Remote endpoint */ + struct key *key; /* Security details */ + bool exclusive; /* T if conn is exclusive */ + u16 service_id; /* Service ID for this connection */ + u32 security_level; /* Security level selected */ }; /* * RxRPC connection definition - * - matched by { transport, service_id, conn_id, direction, key } + * - matched by { local, peer, epoch, conn_id, direction } * - each connection can only handle four simultaneous calls */ struct rxrpc_connection { - struct rxrpc_transport *trans; /* transport session */ - struct rxrpc_conn_bundle *bundle; /* connection bundle (client) */ + struct rxrpc_conn_proto proto; + struct rxrpc_conn_parameters params; + + spinlock_t channel_lock; + struct rxrpc_call *channels[RXRPC_MAXCALLS]; /* active calls */ + wait_queue_head_t channel_wq; /* queue to wait for channel to become available */ + struct work_struct processor; /* connection event processor */ - struct rb_node node; /* node in transport's lookup tree */ + union { + struct rb_node client_node; /* Node in local->client_conns */ + struct rb_node service_node; /* Node in peer->service_conns */ + }; struct list_head link; /* link in master connection list */ - struct list_head bundle_link; /* link in bundle */ struct rb_root calls; /* calls on this connection */ struct sk_buff_head rx_queue; /* received conn-level packets */ - struct rxrpc_call *channels[RXRPC_MAXCALLS]; /* channels (active calls) */ const struct rxrpc_security *security; /* applied security module */ - struct key *key; /* security for this connection (client) */ struct key *server_key; /* security for this service */ struct crypto_skcipher *cipher; /* encryption handle */ struct rxrpc_crypt csum_iv; /* packet checksum base */ + unsigned long flags; +#define RXRPC_CONN_HAS_IDR 0 /* - Has a client conn ID assigned */ unsigned long events; #define RXRPC_CONN_CHALLENGE 0 /* send challenge packet */ - unsigned long put_time; /* time at which to reap */ + unsigned long put_time; /* Time at which last put */ rwlock_t lock; /* access lock */ spinlock_t state_lock; /* state-change lock */ atomic_t usage; @@ -304,17 +305,12 @@ struct rxrpc_connection { unsigned int call_counter; /* call ID counter */ atomic_t serial; /* packet serial number counter */ atomic_t hi_serial; /* highest serial number received */ - u8 avail_calls; /* number of calls available */ + atomic_t avail_chans; /* number of channels available */ u8 size_align; /* data size alignment (for security) */ u8 header_size; /* rxrpc + security header size */ u8 security_size; /* security header size */ - u32 security_level; /* security level negotiated */ u32 security_nonce; /* response re-use preventer */ - u32 epoch; /* epoch of this connection */ - u32 cid; /* connection ID */ - u16 service_id; /* service ID for this connection */ u8 security_ix; /* security type */ - u8 in_clientflag; /* RXRPC_CLIENT_INITIATED if we are server */ u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ }; @@ -360,6 +356,8 @@ enum rxrpc_call_event { * The states that a call can be in. */ enum rxrpc_call_state { + RXRPC_CALL_UNINITIALISED, + RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ @@ -448,7 +446,7 @@ struct rxrpc_call { unsigned long hash_key; /* Full hash key */ u8 in_clientflag; /* Copy of conn->in_clientflag for hashing */ struct rxrpc_local *local; /* Local endpoint. Used for hashing. */ - sa_family_t proto; /* Frame protocol */ + sa_family_t family; /* Frame protocol */ u32 call_id; /* call ID on connection */ u32 cid; /* connection ID plus channel index */ u32 epoch; /* epoch of this connection */ @@ -481,10 +479,6 @@ extern u32 rxrpc_epoch; extern atomic_t rxrpc_debug_id; extern struct workqueue_struct *rxrpc_workqueue; -extern struct rxrpc_transport *rxrpc_name_to_transport(struct rxrpc_sock *, - struct sockaddr *, - int, int, gfp_t); - /* * call_accept.c */ @@ -512,18 +506,26 @@ struct rxrpc_call *rxrpc_find_call_hash(struct rxrpc_host_header *, void *, sa_family_t, const void *); struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, - struct rxrpc_transport *, - struct rxrpc_conn_bundle *, + struct rxrpc_conn_parameters *, + struct sockaddr_rxrpc *, unsigned long, gfp_t); struct rxrpc_call *rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_connection *, - struct rxrpc_host_header *); + struct sk_buff *); void rxrpc_release_call(struct rxrpc_call *); void rxrpc_release_calls_on_socket(struct rxrpc_sock *); void __rxrpc_put_call(struct rxrpc_call *); void __exit rxrpc_destroy_all_calls(void); /* + * conn_client.c + */ +extern struct idr rxrpc_client_conn_ids; + +int rxrpc_get_client_connection_id(struct rxrpc_connection *, gfp_t); +void rxrpc_put_client_connection_id(struct rxrpc_connection *); + +/* * conn_event.c */ void rxrpc_process_connection(struct work_struct *); @@ -537,18 +539,32 @@ extern unsigned int rxrpc_connection_expiry; extern struct list_head rxrpc_connections; extern rwlock_t rxrpc_connection_lock; -struct rxrpc_conn_bundle *rxrpc_get_bundle(struct rxrpc_sock *, - struct rxrpc_transport *, - struct key *, u16, gfp_t); -void rxrpc_put_bundle(struct rxrpc_transport *, struct rxrpc_conn_bundle *); -int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_transport *, - struct rxrpc_conn_bundle *, struct rxrpc_call *, gfp_t); +int rxrpc_connect_call(struct rxrpc_call *, struct rxrpc_conn_parameters *, + struct sockaddr_rxrpc *, gfp_t); +struct rxrpc_connection *rxrpc_find_connection(struct rxrpc_local *, + struct rxrpc_peer *, + struct sk_buff *); +void rxrpc_disconnect_call(struct rxrpc_call *); void rxrpc_put_connection(struct rxrpc_connection *); void __exit rxrpc_destroy_all_connections(void); -struct rxrpc_connection *rxrpc_find_connection(struct rxrpc_transport *, - struct rxrpc_host_header *); -extern struct rxrpc_connection * -rxrpc_incoming_connection(struct rxrpc_transport *, struct rxrpc_host_header *); +struct rxrpc_connection *rxrpc_incoming_connection(struct rxrpc_local *, + struct rxrpc_peer *, + struct sk_buff *); + +static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) +{ + return conn->out_clientflag; +} + +static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) +{ + return conn->proto.in_clientflag; +} + +static inline void rxrpc_get_connection(struct rxrpc_connection *conn) +{ + atomic_inc(&conn->usage); +} /* * input.c @@ -598,7 +614,7 @@ struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *local) static inline void rxrpc_put_local(struct rxrpc_local *local) { - if (atomic_dec_and_test(&local->usage)) + if (local && atomic_dec_and_test(&local->usage)) __rxrpc_put_local(local); } @@ -623,7 +639,7 @@ extern const char *rxrpc_acks(u8 reason); */ extern unsigned int rxrpc_resend_timeout; -int rxrpc_send_packet(struct rxrpc_transport *, struct sk_buff *); +int rxrpc_send_data_packet(struct rxrpc_connection *, struct sk_buff *); int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); /* @@ -655,7 +671,7 @@ struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *peer) extern void __rxrpc_put_peer(struct rxrpc_peer *peer); static inline void rxrpc_put_peer(struct rxrpc_peer *peer) { - if (atomic_dec_and_test(&peer->usage)) + if (peer && atomic_dec_and_test(&peer->usage)) __rxrpc_put_peer(peer); } @@ -704,18 +720,6 @@ static inline void rxrpc_sysctl_exit(void) {} #endif /* - * transport.c - */ -extern unsigned int rxrpc_transport_expiry; - -struct rxrpc_transport *rxrpc_get_transport(struct rxrpc_local *, - struct rxrpc_peer *, gfp_t); -void rxrpc_put_transport(struct rxrpc_transport *); -void __exit rxrpc_destroy_all_transports(void); -struct rxrpc_transport *rxrpc_find_transport(struct rxrpc_local *, - struct rxrpc_peer *); - -/* * utils.c */ void rxrpc_get_addr_from_skb(struct rxrpc_local *, const struct sk_buff *, |