117926a79SDavid Howells /* AF_RXRPC internal definitions 217926a79SDavid Howells * 317926a79SDavid Howells * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. 417926a79SDavid Howells * Written by David Howells (dhowells@redhat.com) 517926a79SDavid Howells * 617926a79SDavid Howells * This program is free software; you can redistribute it and/or 717926a79SDavid Howells * modify it under the terms of the GNU General Public License 817926a79SDavid Howells * as published by the Free Software Foundation; either version 917926a79SDavid Howells * 2 of the License, or (at your option) any later version. 1017926a79SDavid Howells */ 1117926a79SDavid Howells 1217926a79SDavid Howells #include <rxrpc/packet.h> 1317926a79SDavid Howells 1417926a79SDavid Howells #if 0 1517926a79SDavid Howells #define CHECK_SLAB_OKAY(X) \ 1617926a79SDavid Howells BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \ 1717926a79SDavid Howells (POISON_FREE << 8 | POISON_FREE)) 1817926a79SDavid Howells #else 1917926a79SDavid Howells #define CHECK_SLAB_OKAY(X) do {} while(0) 2017926a79SDavid Howells #endif 2117926a79SDavid Howells 2217926a79SDavid Howells #define FCRYPT_BSIZE 8 2317926a79SDavid Howells struct rxrpc_crypt { 2417926a79SDavid Howells union { 2517926a79SDavid Howells u8 x[FCRYPT_BSIZE]; 2691e916cfSAl Viro __be32 n[2]; 2717926a79SDavid Howells }; 2817926a79SDavid Howells } __attribute__((aligned(8))); 2917926a79SDavid Howells 30651350d1SDavid Howells #define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS)) 31651350d1SDavid Howells #define rxrpc_queue_delayed_work(WS,D) \ 32651350d1SDavid Howells queue_delayed_work(rxrpc_workqueue, (WS), (D)) 33651350d1SDavid Howells 34651350d1SDavid Howells #define rxrpc_queue_call(CALL) rxrpc_queue_work(&(CALL)->processor) 35651350d1SDavid Howells #define rxrpc_queue_conn(CONN) rxrpc_queue_work(&(CONN)->processor) 3617926a79SDavid Howells 3717926a79SDavid Howells /* 3817926a79SDavid Howells * sk_state for RxRPC sockets 3917926a79SDavid Howells */ 4017926a79SDavid Howells enum { 4117926a79SDavid Howells RXRPC_UNCONNECTED = 0, 4217926a79SDavid Howells RXRPC_CLIENT_BOUND, /* client local address bound */ 4317926a79SDavid Howells RXRPC_CLIENT_CONNECTED, /* client is connected */ 4417926a79SDavid Howells RXRPC_SERVER_BOUND, /* server local address bound */ 4517926a79SDavid Howells RXRPC_SERVER_LISTENING, /* server listening for connections */ 4617926a79SDavid Howells RXRPC_CLOSE, /* socket is being closed */ 4717926a79SDavid Howells }; 4817926a79SDavid Howells 4917926a79SDavid Howells /* 5017926a79SDavid Howells * RxRPC socket definition 5117926a79SDavid Howells */ 5217926a79SDavid Howells struct rxrpc_sock { 5317926a79SDavid Howells /* WARNING: sk has to be the first member */ 5417926a79SDavid Howells struct sock sk; 55651350d1SDavid Howells rxrpc_interceptor_t interceptor; /* kernel service Rx interceptor function */ 5617926a79SDavid Howells struct rxrpc_local *local; /* local endpoint */ 5717926a79SDavid Howells struct rxrpc_transport *trans; /* transport handler */ 5817926a79SDavid Howells struct rxrpc_conn_bundle *bundle; /* virtual connection bundle */ 5917926a79SDavid Howells struct rxrpc_connection *conn; /* exclusive virtual connection */ 6017926a79SDavid Howells struct list_head listen_link; /* link in the local endpoint's listen list */ 6117926a79SDavid Howells struct list_head secureq; /* calls awaiting connection security clearance */ 6217926a79SDavid Howells struct list_head acceptq; /* calls awaiting acceptance */ 6317926a79SDavid Howells struct key *key; /* security for this socket */ 6417926a79SDavid Howells struct key *securities; /* list of server security descriptors */ 6517926a79SDavid Howells struct rb_root calls; /* outstanding calls on this socket */ 6617926a79SDavid Howells unsigned long flags; 6717926a79SDavid Howells #define RXRPC_SOCK_EXCLUSIVE_CONN 1 /* exclusive connection for a client socket */ 6817926a79SDavid Howells rwlock_t call_lock; /* lock for calls */ 6917926a79SDavid Howells u32 min_sec_level; /* minimum security level */ 7017926a79SDavid Howells #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT 7117926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 7217926a79SDavid Howells sa_family_t proto; /* protocol created with */ 7317926a79SDavid Howells __be16 service_id; /* service ID of local/remote service */ 7417926a79SDavid Howells }; 7517926a79SDavid Howells 7617926a79SDavid Howells #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) 7717926a79SDavid Howells 7817926a79SDavid Howells /* 7917926a79SDavid Howells * RxRPC socket buffer private variables 8017926a79SDavid Howells * - max 48 bytes (struct sk_buff::cb) 8117926a79SDavid Howells */ 8217926a79SDavid Howells struct rxrpc_skb_priv { 8317926a79SDavid Howells struct rxrpc_call *call; /* call with which associated */ 8417926a79SDavid Howells unsigned long resend_at; /* time in jiffies at which to resend */ 8517926a79SDavid Howells union { 8695c96174SEric Dumazet unsigned int offset; /* offset into buffer of next read */ 8717926a79SDavid Howells int remain; /* amount of space remaining for next write */ 8817926a79SDavid Howells u32 error; /* network error code */ 8917926a79SDavid Howells bool need_resend; /* T if needs resending */ 9017926a79SDavid Howells }; 9117926a79SDavid Howells 9217926a79SDavid Howells struct rxrpc_header hdr; /* RxRPC packet header from this packet */ 9317926a79SDavid Howells }; 9417926a79SDavid Howells 9517926a79SDavid Howells #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) 9617926a79SDavid Howells 9717926a79SDavid Howells enum rxrpc_command { 9817926a79SDavid Howells RXRPC_CMD_SEND_DATA, /* send data message */ 9917926a79SDavid Howells RXRPC_CMD_SEND_ABORT, /* request abort generation */ 10017926a79SDavid Howells RXRPC_CMD_ACCEPT, /* [server] accept incoming call */ 10117926a79SDavid Howells RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */ 10217926a79SDavid Howells }; 10317926a79SDavid Howells 10417926a79SDavid Howells /* 10517926a79SDavid Howells * RxRPC security module interface 10617926a79SDavid Howells */ 10717926a79SDavid Howells struct rxrpc_security { 10817926a79SDavid Howells struct module *owner; /* providing module */ 10917926a79SDavid Howells struct list_head link; /* link in master list */ 11017926a79SDavid Howells const char *name; /* name of this service */ 11117926a79SDavid Howells u8 security_index; /* security type provided */ 11217926a79SDavid Howells 11317926a79SDavid Howells /* initialise a connection's security */ 11417926a79SDavid Howells int (*init_connection_security)(struct rxrpc_connection *); 11517926a79SDavid Howells 11617926a79SDavid Howells /* prime a connection's packet security */ 11717926a79SDavid Howells void (*prime_packet_security)(struct rxrpc_connection *); 11817926a79SDavid Howells 11917926a79SDavid Howells /* impose security on a packet */ 12017926a79SDavid Howells int (*secure_packet)(const struct rxrpc_call *, 12117926a79SDavid Howells struct sk_buff *, 12217926a79SDavid Howells size_t, 12317926a79SDavid Howells void *); 12417926a79SDavid Howells 12517926a79SDavid Howells /* verify the security on a received packet */ 12617926a79SDavid Howells int (*verify_packet)(const struct rxrpc_call *, struct sk_buff *, 12717926a79SDavid Howells u32 *); 12817926a79SDavid Howells 12917926a79SDavid Howells /* issue a challenge */ 13017926a79SDavid Howells int (*issue_challenge)(struct rxrpc_connection *); 13117926a79SDavid Howells 13217926a79SDavid Howells /* respond to a challenge */ 13317926a79SDavid Howells int (*respond_to_challenge)(struct rxrpc_connection *, 13417926a79SDavid Howells struct sk_buff *, 13517926a79SDavid Howells u32 *); 13617926a79SDavid Howells 13717926a79SDavid Howells /* verify a response */ 13817926a79SDavid Howells int (*verify_response)(struct rxrpc_connection *, 13917926a79SDavid Howells struct sk_buff *, 14017926a79SDavid Howells u32 *); 14117926a79SDavid Howells 14217926a79SDavid Howells /* clear connection security */ 14317926a79SDavid Howells void (*clear)(struct rxrpc_connection *); 14417926a79SDavid Howells }; 14517926a79SDavid Howells 14617926a79SDavid Howells /* 14717926a79SDavid Howells * RxRPC local transport endpoint definition 14817926a79SDavid Howells * - matched by local port, address and protocol type 14917926a79SDavid Howells */ 15017926a79SDavid Howells struct rxrpc_local { 15117926a79SDavid Howells struct socket *socket; /* my UDP socket */ 15217926a79SDavid Howells struct work_struct destroyer; /* endpoint destroyer */ 15317926a79SDavid Howells struct work_struct acceptor; /* incoming call processor */ 15417926a79SDavid Howells struct work_struct rejecter; /* packet reject writer */ 15517926a79SDavid Howells struct list_head services; /* services listening on this endpoint */ 15617926a79SDavid Howells struct list_head link; /* link in endpoint list */ 15717926a79SDavid Howells struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ 15817926a79SDavid Howells struct sk_buff_head accept_queue; /* incoming calls awaiting acceptance */ 15917926a79SDavid Howells struct sk_buff_head reject_queue; /* packets awaiting rejection */ 16017926a79SDavid Howells spinlock_t lock; /* access lock */ 16117926a79SDavid Howells rwlock_t services_lock; /* lock for services list */ 16217926a79SDavid Howells atomic_t usage; 16317926a79SDavid Howells int debug_id; /* debug ID for printks */ 16417926a79SDavid Howells volatile char error_rcvd; /* T if received ICMP error outstanding */ 16517926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 16617926a79SDavid Howells }; 16717926a79SDavid Howells 16817926a79SDavid Howells /* 16917926a79SDavid Howells * RxRPC remote transport endpoint definition 17017926a79SDavid Howells * - matched by remote port, address and protocol type 17117926a79SDavid Howells * - holds the connection ID counter for connections between the two endpoints 17217926a79SDavid Howells */ 17317926a79SDavid Howells struct rxrpc_peer { 17417926a79SDavid Howells struct work_struct destroyer; /* peer destroyer */ 17517926a79SDavid Howells struct list_head link; /* link in master peer list */ 17617926a79SDavid Howells struct list_head error_targets; /* targets for net error distribution */ 17717926a79SDavid Howells spinlock_t lock; /* access lock */ 17817926a79SDavid Howells atomic_t usage; 17995c96174SEric Dumazet unsigned int if_mtu; /* interface MTU for this peer */ 18095c96174SEric Dumazet unsigned int mtu; /* network MTU for this peer */ 18195c96174SEric Dumazet unsigned int maxdata; /* data size (MTU - hdrsize) */ 18217926a79SDavid Howells unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ 18317926a79SDavid Howells int debug_id; /* debug ID for printks */ 18417926a79SDavid Howells int net_error; /* network error distributed */ 18517926a79SDavid Howells struct sockaddr_rxrpc srx; /* remote address */ 18617926a79SDavid Howells 18717926a79SDavid Howells /* calculated RTT cache */ 18817926a79SDavid Howells #define RXRPC_RTT_CACHE_SIZE 32 18917926a79SDavid Howells suseconds_t rtt; /* current RTT estimate (in uS) */ 19095c96174SEric Dumazet unsigned int rtt_point; /* next entry at which to insert */ 19195c96174SEric Dumazet unsigned int rtt_usage; /* amount of cache actually used */ 19217926a79SDavid Howells suseconds_t rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* calculated RTT cache */ 19317926a79SDavid Howells }; 19417926a79SDavid Howells 19517926a79SDavid Howells /* 19617926a79SDavid Howells * RxRPC point-to-point transport / connection manager definition 19717926a79SDavid Howells * - handles a bundle of connections between two endpoints 19817926a79SDavid Howells * - matched by { local, peer } 19917926a79SDavid Howells */ 20017926a79SDavid Howells struct rxrpc_transport { 20117926a79SDavid Howells struct rxrpc_local *local; /* local transport endpoint */ 20217926a79SDavid Howells struct rxrpc_peer *peer; /* remote transport endpoint */ 20317926a79SDavid Howells struct work_struct error_handler; /* network error distributor */ 20417926a79SDavid Howells struct rb_root bundles; /* client connection bundles on this transport */ 20517926a79SDavid Howells struct rb_root client_conns; /* client connections on this transport */ 20617926a79SDavid Howells struct rb_root server_conns; /* server connections on this transport */ 20717926a79SDavid Howells struct list_head link; /* link in master session list */ 20817926a79SDavid Howells struct sk_buff_head error_queue; /* error packets awaiting processing */ 20917926a79SDavid Howells time_t put_time; /* time at which to reap */ 21017926a79SDavid Howells spinlock_t client_lock; /* client connection allocation lock */ 21117926a79SDavid Howells rwlock_t conn_lock; /* lock for active/dead connections */ 21217926a79SDavid Howells atomic_t usage; 21317926a79SDavid Howells int debug_id; /* debug ID for printks */ 21417926a79SDavid Howells unsigned int conn_idcounter; /* connection ID counter (client) */ 21517926a79SDavid Howells }; 21617926a79SDavid Howells 21717926a79SDavid Howells /* 21817926a79SDavid Howells * RxRPC client connection bundle 21917926a79SDavid Howells * - matched by { transport, service_id, key } 22017926a79SDavid Howells */ 22117926a79SDavid Howells struct rxrpc_conn_bundle { 22217926a79SDavid Howells struct rb_node node; /* node in transport's lookup tree */ 22317926a79SDavid Howells struct list_head unused_conns; /* unused connections in this bundle */ 22417926a79SDavid Howells struct list_head avail_conns; /* available connections in this bundle */ 22517926a79SDavid Howells struct list_head busy_conns; /* busy connections in this bundle */ 22617926a79SDavid Howells struct key *key; /* security for this bundle */ 22717926a79SDavid Howells wait_queue_head_t chanwait; /* wait for channel to become available */ 22817926a79SDavid Howells atomic_t usage; 22917926a79SDavid Howells int debug_id; /* debug ID for printks */ 23017926a79SDavid Howells unsigned short num_conns; /* number of connections in this bundle */ 23117926a79SDavid Howells __be16 service_id; /* service ID */ 2324e36a95eSDavid Howells u8 security_ix; /* security type */ 23317926a79SDavid Howells }; 23417926a79SDavid Howells 23517926a79SDavid Howells /* 23617926a79SDavid Howells * RxRPC connection definition 23717926a79SDavid Howells * - matched by { transport, service_id, conn_id, direction, key } 23817926a79SDavid Howells * - each connection can only handle four simultaneous calls 23917926a79SDavid Howells */ 24017926a79SDavid Howells struct rxrpc_connection { 24117926a79SDavid Howells struct rxrpc_transport *trans; /* transport session */ 24217926a79SDavid Howells struct rxrpc_conn_bundle *bundle; /* connection bundle (client) */ 24317926a79SDavid Howells struct work_struct processor; /* connection event processor */ 24417926a79SDavid Howells struct rb_node node; /* node in transport's lookup tree */ 24517926a79SDavid Howells struct list_head link; /* link in master connection list */ 24617926a79SDavid Howells struct list_head bundle_link; /* link in bundle */ 24717926a79SDavid Howells struct rb_root calls; /* calls on this connection */ 24817926a79SDavid Howells struct sk_buff_head rx_queue; /* received conn-level packets */ 24917926a79SDavid Howells struct rxrpc_call *channels[RXRPC_MAXCALLS]; /* channels (active calls) */ 25017926a79SDavid Howells struct rxrpc_security *security; /* applied security module */ 25117926a79SDavid Howells struct key *key; /* security for this connection (client) */ 25217926a79SDavid Howells struct key *server_key; /* security for this service */ 25317926a79SDavid Howells struct crypto_blkcipher *cipher; /* encryption handle */ 25417926a79SDavid Howells struct rxrpc_crypt csum_iv; /* packet checksum base */ 25517926a79SDavid Howells unsigned long events; 25617926a79SDavid Howells #define RXRPC_CONN_CHALLENGE 0 /* send challenge packet */ 25717926a79SDavid Howells time_t put_time; /* time at which to reap */ 25817926a79SDavid Howells rwlock_t lock; /* access lock */ 25917926a79SDavid Howells spinlock_t state_lock; /* state-change lock */ 26017926a79SDavid Howells atomic_t usage; 26117926a79SDavid Howells u32 real_conn_id; /* connection ID (host-endian) */ 26217926a79SDavid Howells enum { /* current state of connection */ 26317926a79SDavid Howells RXRPC_CONN_UNUSED, /* - connection not yet attempted */ 26417926a79SDavid Howells RXRPC_CONN_CLIENT, /* - client connection */ 26517926a79SDavid Howells RXRPC_CONN_SERVER_UNSECURED, /* - server unsecured connection */ 26617926a79SDavid Howells RXRPC_CONN_SERVER_CHALLENGING, /* - server challenging for security */ 26717926a79SDavid Howells RXRPC_CONN_SERVER, /* - server secured connection */ 26817926a79SDavid Howells RXRPC_CONN_REMOTELY_ABORTED, /* - conn aborted by peer */ 26917926a79SDavid Howells RXRPC_CONN_LOCALLY_ABORTED, /* - conn aborted locally */ 27017926a79SDavid Howells RXRPC_CONN_NETWORK_ERROR, /* - conn terminated by network error */ 27117926a79SDavid Howells } state; 27217926a79SDavid Howells int error; /* error code for local abort */ 27317926a79SDavid Howells int debug_id; /* debug ID for printks */ 27495c96174SEric Dumazet unsigned int call_counter; /* call ID counter */ 27517926a79SDavid Howells atomic_t serial; /* packet serial number counter */ 27617926a79SDavid Howells atomic_t hi_serial; /* highest serial number received */ 27717926a79SDavid Howells u8 avail_calls; /* number of calls available */ 27817926a79SDavid Howells u8 size_align; /* data size alignment (for security) */ 27917926a79SDavid Howells u8 header_size; /* rxrpc + security header size */ 28017926a79SDavid Howells u8 security_size; /* security header size */ 28117926a79SDavid Howells u32 security_level; /* security level negotiated */ 28217926a79SDavid Howells u32 security_nonce; /* response re-use preventer */ 28317926a79SDavid Howells 28417926a79SDavid Howells /* the following are all in net order */ 28517926a79SDavid Howells __be32 epoch; /* epoch of this connection */ 28617926a79SDavid Howells __be32 cid; /* connection ID */ 28717926a79SDavid Howells __be16 service_id; /* service ID */ 28817926a79SDavid Howells u8 security_ix; /* security type */ 28917926a79SDavid Howells u8 in_clientflag; /* RXRPC_CLIENT_INITIATED if we are server */ 29017926a79SDavid Howells u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ 29117926a79SDavid Howells }; 29217926a79SDavid Howells 29317926a79SDavid Howells /* 29417926a79SDavid Howells * RxRPC call definition 29517926a79SDavid Howells * - matched by { connection, call_id } 29617926a79SDavid Howells */ 29717926a79SDavid Howells struct rxrpc_call { 29817926a79SDavid Howells struct rxrpc_connection *conn; /* connection carrying call */ 29917926a79SDavid Howells struct rxrpc_sock *socket; /* socket responsible */ 30017926a79SDavid Howells struct timer_list lifetimer; /* lifetime remaining on call */ 30117926a79SDavid Howells struct timer_list deadspan; /* reap timer for re-ACK'ing, etc */ 30217926a79SDavid Howells struct timer_list ack_timer; /* ACK generation timer */ 30317926a79SDavid Howells struct timer_list resend_timer; /* Tx resend timer */ 30417926a79SDavid Howells struct work_struct destroyer; /* call destroyer */ 30517926a79SDavid Howells struct work_struct processor; /* packet processor and ACK generator */ 30617926a79SDavid Howells struct list_head link; /* link in master call list */ 30717926a79SDavid Howells struct list_head error_link; /* link in error distribution list */ 30817926a79SDavid Howells struct list_head accept_link; /* calls awaiting acceptance */ 30917926a79SDavid Howells struct rb_node sock_node; /* node in socket call tree */ 31017926a79SDavid Howells struct rb_node conn_node; /* node in connection call tree */ 31117926a79SDavid Howells struct sk_buff_head rx_queue; /* received packets */ 31217926a79SDavid Howells struct sk_buff_head rx_oos_queue; /* packets received out of sequence */ 31317926a79SDavid Howells struct sk_buff *tx_pending; /* Tx socket buffer being filled */ 31417926a79SDavid Howells wait_queue_head_t tx_waitq; /* wait for Tx window space to become available */ 31517926a79SDavid Howells unsigned long user_call_ID; /* user-defined call ID */ 31617926a79SDavid Howells unsigned long creation_jif; /* time of call creation */ 31717926a79SDavid Howells unsigned long flags; 31817926a79SDavid Howells #define RXRPC_CALL_RELEASED 0 /* call has been released - no more message to userspace */ 31917926a79SDavid Howells #define RXRPC_CALL_TERMINAL_MSG 1 /* call has given the socket its final message */ 32017926a79SDavid Howells #define RXRPC_CALL_RCVD_LAST 2 /* all packets received */ 32117926a79SDavid Howells #define RXRPC_CALL_RUN_RTIMER 3 /* Tx resend timer started */ 32217926a79SDavid Howells #define RXRPC_CALL_TX_SOFT_ACK 4 /* sent some soft ACKs */ 32317926a79SDavid Howells #define RXRPC_CALL_PROC_BUSY 5 /* the processor is busy */ 32417926a79SDavid Howells #define RXRPC_CALL_INIT_ACCEPT 6 /* acceptance was initiated */ 32517926a79SDavid Howells #define RXRPC_CALL_HAS_USERID 7 /* has a user ID attached */ 32617926a79SDavid Howells #define RXRPC_CALL_EXPECT_OOS 8 /* expect out of sequence packets */ 32717926a79SDavid Howells unsigned long events; 32817926a79SDavid Howells #define RXRPC_CALL_RCVD_ACKALL 0 /* ACKALL or reply received */ 32917926a79SDavid Howells #define RXRPC_CALL_RCVD_BUSY 1 /* busy packet received */ 33017926a79SDavid Howells #define RXRPC_CALL_RCVD_ABORT 2 /* abort packet received */ 33117926a79SDavid Howells #define RXRPC_CALL_RCVD_ERROR 3 /* network error received */ 33217926a79SDavid Howells #define RXRPC_CALL_ACK_FINAL 4 /* need to generate final ACK (and release call) */ 33317926a79SDavid Howells #define RXRPC_CALL_ACK 5 /* need to generate ACK */ 33417926a79SDavid Howells #define RXRPC_CALL_REJECT_BUSY 6 /* need to generate busy message */ 33517926a79SDavid Howells #define RXRPC_CALL_ABORT 7 /* need to generate abort */ 33617926a79SDavid Howells #define RXRPC_CALL_CONN_ABORT 8 /* local connection abort generated */ 33717926a79SDavid Howells #define RXRPC_CALL_RESEND_TIMER 9 /* Tx resend timer expired */ 33817926a79SDavid Howells #define RXRPC_CALL_RESEND 10 /* Tx resend required */ 33917926a79SDavid Howells #define RXRPC_CALL_DRAIN_RX_OOS 11 /* drain the Rx out of sequence queue */ 34017926a79SDavid Howells #define RXRPC_CALL_LIFE_TIMER 12 /* call's lifetimer ran out */ 34117926a79SDavid Howells #define RXRPC_CALL_ACCEPTED 13 /* incoming call accepted by userspace app */ 34217926a79SDavid Howells #define RXRPC_CALL_SECURED 14 /* incoming call's connection is now secure */ 34317926a79SDavid Howells #define RXRPC_CALL_POST_ACCEPT 15 /* need to post an "accept?" message to the app */ 34417926a79SDavid Howells #define RXRPC_CALL_RELEASE 16 /* need to release the call's resources */ 34517926a79SDavid Howells 34617926a79SDavid Howells spinlock_t lock; 34717926a79SDavid Howells rwlock_t state_lock; /* lock for state transition */ 34817926a79SDavid Howells atomic_t usage; 34917926a79SDavid Howells atomic_t sequence; /* Tx data packet sequence counter */ 35017926a79SDavid Howells u32 abort_code; /* local/remote abort code */ 35117926a79SDavid Howells enum { /* current state of call */ 35217926a79SDavid Howells RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ 35317926a79SDavid Howells RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ 35417926a79SDavid Howells RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ 35517926a79SDavid Howells RXRPC_CALL_CLIENT_FINAL_ACK, /* - client sending final ACK phase */ 35617926a79SDavid Howells RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ 35717926a79SDavid Howells RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ 35817926a79SDavid Howells RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ 35917926a79SDavid Howells RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ 36017926a79SDavid Howells RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ 36117926a79SDavid Howells RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ 36217926a79SDavid Howells RXRPC_CALL_COMPLETE, /* - call completed */ 36317926a79SDavid Howells RXRPC_CALL_SERVER_BUSY, /* - call rejected by busy server */ 36417926a79SDavid Howells RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ 36517926a79SDavid Howells RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ 36617926a79SDavid Howells RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ 36717926a79SDavid Howells RXRPC_CALL_DEAD, /* - call is dead */ 36817926a79SDavid Howells } state; 36917926a79SDavid Howells int debug_id; /* debug ID for printks */ 37017926a79SDavid Howells u8 channel; /* connection channel occupied by this call */ 37117926a79SDavid Howells 37217926a79SDavid Howells /* transmission-phase ACK management */ 3734e36a95eSDavid Howells u8 acks_head; /* offset into window of first entry */ 3744e36a95eSDavid Howells u8 acks_tail; /* offset into window of last entry */ 3754e36a95eSDavid Howells u8 acks_winsz; /* size of un-ACK'd window */ 3764e36a95eSDavid Howells u8 acks_unacked; /* lowest unacked packet in last ACK received */ 37717926a79SDavid Howells int acks_latest; /* serial number of latest ACK received */ 37817926a79SDavid Howells rxrpc_seq_t acks_hard; /* highest definitively ACK'd msg seq */ 37917926a79SDavid Howells unsigned long *acks_window; /* sent packet window 38017926a79SDavid Howells * - elements are pointers with LSB set if ACK'd 38117926a79SDavid Howells */ 38217926a79SDavid Howells 38317926a79SDavid Howells /* receive-phase ACK management */ 38417926a79SDavid Howells rxrpc_seq_t rx_data_expect; /* next data seq ID expected to be received */ 38517926a79SDavid Howells rxrpc_seq_t rx_data_post; /* next data seq ID expected to be posted */ 38617926a79SDavid Howells rxrpc_seq_t rx_data_recv; /* last data seq ID encountered by recvmsg */ 38717926a79SDavid Howells rxrpc_seq_t rx_data_eaten; /* last data seq ID consumed by recvmsg */ 38817926a79SDavid Howells rxrpc_seq_t rx_first_oos; /* first packet in rx_oos_queue (or 0) */ 38917926a79SDavid Howells rxrpc_seq_t ackr_win_top; /* top of ACK window (rx_data_eaten is bottom) */ 39017926a79SDavid Howells rxrpc_seq_net_t ackr_prev_seq; /* previous sequence number received */ 3914e36a95eSDavid Howells u8 ackr_reason; /* reason to ACK */ 39217926a79SDavid Howells __be32 ackr_serial; /* serial of packet being ACK'd */ 39317926a79SDavid Howells atomic_t ackr_not_idle; /* number of packets in Rx queue */ 39417926a79SDavid Howells 39517926a79SDavid Howells /* received packet records, 1 bit per record */ 39617926a79SDavid Howells #define RXRPC_ACKR_WINDOW_ASZ DIV_ROUND_UP(RXRPC_MAXACKS, BITS_PER_LONG) 39717926a79SDavid Howells unsigned long ackr_window[RXRPC_ACKR_WINDOW_ASZ + 1]; 39817926a79SDavid Howells 39917926a79SDavid Howells /* the following should all be in net order */ 40017926a79SDavid Howells __be32 cid; /* connection ID + channel index */ 40117926a79SDavid Howells __be32 call_id; /* call ID on connection */ 40217926a79SDavid Howells }; 40317926a79SDavid Howells 40417926a79SDavid Howells /* 40517926a79SDavid Howells * locally abort an RxRPC call 40617926a79SDavid Howells */ 40717926a79SDavid Howells static inline void rxrpc_abort_call(struct rxrpc_call *call, u32 abort_code) 40817926a79SDavid Howells { 40917926a79SDavid Howells write_lock_bh(&call->state_lock); 41017926a79SDavid Howells if (call->state < RXRPC_CALL_COMPLETE) { 41117926a79SDavid Howells call->abort_code = abort_code; 41217926a79SDavid Howells call->state = RXRPC_CALL_LOCALLY_ABORTED; 41317926a79SDavid Howells set_bit(RXRPC_CALL_ABORT, &call->events); 41417926a79SDavid Howells } 41517926a79SDavid Howells write_unlock_bh(&call->state_lock); 41617926a79SDavid Howells } 41717926a79SDavid Howells 41817926a79SDavid Howells /* 419651350d1SDavid Howells * af_rxrpc.c 42017926a79SDavid Howells */ 421651350d1SDavid Howells extern atomic_t rxrpc_n_skbs; 422651350d1SDavid Howells extern __be32 rxrpc_epoch; 423651350d1SDavid Howells extern atomic_t rxrpc_debug_id; 424651350d1SDavid Howells extern struct workqueue_struct *rxrpc_workqueue; 42517926a79SDavid Howells 42617926a79SDavid Howells /* 42717926a79SDavid Howells * ar-accept.c 42817926a79SDavid Howells */ 429c1b1203dSJoe Perches void rxrpc_accept_incoming_calls(struct work_struct *); 430c1b1203dSJoe Perches struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long); 431c1b1203dSJoe Perches int rxrpc_reject_call(struct rxrpc_sock *); 43217926a79SDavid Howells 43317926a79SDavid Howells /* 43417926a79SDavid Howells * ar-ack.c 43517926a79SDavid Howells */ 436c1b1203dSJoe Perches void __rxrpc_propose_ACK(struct rxrpc_call *, u8, __be32, bool); 437c1b1203dSJoe Perches void rxrpc_propose_ACK(struct rxrpc_call *, u8, __be32, bool); 438c1b1203dSJoe Perches void rxrpc_process_call(struct work_struct *); 43917926a79SDavid Howells 44017926a79SDavid Howells /* 44117926a79SDavid Howells * ar-call.c 44217926a79SDavid Howells */ 44317926a79SDavid Howells extern struct kmem_cache *rxrpc_call_jar; 44417926a79SDavid Howells extern struct list_head rxrpc_calls; 44517926a79SDavid Howells extern rwlock_t rxrpc_call_lock; 44617926a79SDavid Howells 447c1b1203dSJoe Perches struct rxrpc_call *rxrpc_get_client_call(struct rxrpc_sock *, 44817926a79SDavid Howells struct rxrpc_transport *, 44917926a79SDavid Howells struct rxrpc_conn_bundle *, 45017926a79SDavid Howells unsigned long, int, gfp_t); 451c1b1203dSJoe Perches struct rxrpc_call *rxrpc_incoming_call(struct rxrpc_sock *, 45217926a79SDavid Howells struct rxrpc_connection *, 45317926a79SDavid Howells struct rxrpc_header *, gfp_t); 454c1b1203dSJoe Perches struct rxrpc_call *rxrpc_find_server_call(struct rxrpc_sock *, unsigned long); 455c1b1203dSJoe Perches void rxrpc_release_call(struct rxrpc_call *); 456c1b1203dSJoe Perches void rxrpc_release_calls_on_socket(struct rxrpc_sock *); 457c1b1203dSJoe Perches void __rxrpc_put_call(struct rxrpc_call *); 458c1b1203dSJoe Perches void __exit rxrpc_destroy_all_calls(void); 45917926a79SDavid Howells 46017926a79SDavid Howells /* 46117926a79SDavid Howells * ar-connection.c 46217926a79SDavid Howells */ 46317926a79SDavid Howells extern struct list_head rxrpc_connections; 46417926a79SDavid Howells extern rwlock_t rxrpc_connection_lock; 46517926a79SDavid Howells 466c1b1203dSJoe Perches struct rxrpc_conn_bundle *rxrpc_get_bundle(struct rxrpc_sock *, 46717926a79SDavid Howells struct rxrpc_transport *, 468c1b1203dSJoe Perches struct key *, __be16, gfp_t); 469c1b1203dSJoe Perches void rxrpc_put_bundle(struct rxrpc_transport *, struct rxrpc_conn_bundle *); 470c1b1203dSJoe Perches int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_transport *, 471c1b1203dSJoe Perches struct rxrpc_conn_bundle *, struct rxrpc_call *, gfp_t); 472c1b1203dSJoe Perches void rxrpc_put_connection(struct rxrpc_connection *); 473c1b1203dSJoe Perches void __exit rxrpc_destroy_all_connections(void); 474c1b1203dSJoe Perches struct rxrpc_connection *rxrpc_find_connection(struct rxrpc_transport *, 47517926a79SDavid Howells struct rxrpc_header *); 47617926a79SDavid Howells extern struct rxrpc_connection * 47717926a79SDavid Howells rxrpc_incoming_connection(struct rxrpc_transport *, struct rxrpc_header *, 47817926a79SDavid Howells gfp_t); 47917926a79SDavid Howells 48017926a79SDavid Howells /* 48117926a79SDavid Howells * ar-connevent.c 48217926a79SDavid Howells */ 483c1b1203dSJoe Perches void rxrpc_process_connection(struct work_struct *); 484c1b1203dSJoe Perches void rxrpc_reject_packet(struct rxrpc_local *, struct sk_buff *); 485c1b1203dSJoe Perches void rxrpc_reject_packets(struct work_struct *); 48617926a79SDavid Howells 48717926a79SDavid Howells /* 48817926a79SDavid Howells * ar-error.c 48917926a79SDavid Howells */ 490c1b1203dSJoe Perches void rxrpc_UDP_error_report(struct sock *); 491c1b1203dSJoe Perches void rxrpc_UDP_error_handler(struct work_struct *); 49217926a79SDavid Howells 49317926a79SDavid Howells /* 49417926a79SDavid Howells * ar-input.c 49517926a79SDavid Howells */ 49617926a79SDavid Howells extern unsigned long rxrpc_ack_timeout; 49717926a79SDavid Howells extern const char *rxrpc_pkts[]; 49817926a79SDavid Howells 499c1b1203dSJoe Perches void rxrpc_data_ready(struct sock *, int); 500c1b1203dSJoe Perches int rxrpc_queue_rcv_skb(struct rxrpc_call *, struct sk_buff *, bool, bool); 501c1b1203dSJoe Perches void rxrpc_fast_process_packet(struct rxrpc_call *, struct sk_buff *); 50217926a79SDavid Howells 50317926a79SDavid Howells /* 50417926a79SDavid Howells * ar-local.c 50517926a79SDavid Howells */ 50617926a79SDavid Howells extern rwlock_t rxrpc_local_lock; 507c1b1203dSJoe Perches struct rxrpc_local *rxrpc_lookup_local(struct sockaddr_rxrpc *); 508c1b1203dSJoe Perches void rxrpc_put_local(struct rxrpc_local *); 509c1b1203dSJoe Perches void __exit rxrpc_destroy_all_locals(void); 51017926a79SDavid Howells 51117926a79SDavid Howells /* 51217926a79SDavid Howells * ar-key.c 51317926a79SDavid Howells */ 51417926a79SDavid Howells extern struct key_type key_type_rxrpc; 51517926a79SDavid Howells extern struct key_type key_type_rxrpc_s; 51617926a79SDavid Howells 517c1b1203dSJoe Perches int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); 518c1b1203dSJoe Perches int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); 519c1b1203dSJoe Perches int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time_t, 520c1b1203dSJoe Perches u32); 52117926a79SDavid Howells 52217926a79SDavid Howells /* 52317926a79SDavid Howells * ar-output.c 52417926a79SDavid Howells */ 52517926a79SDavid Howells extern int rxrpc_resend_timeout; 52617926a79SDavid Howells 527c1b1203dSJoe Perches int rxrpc_send_packet(struct rxrpc_transport *, struct sk_buff *); 528c1b1203dSJoe Perches int rxrpc_client_sendmsg(struct kiocb *, struct rxrpc_sock *, 529c1b1203dSJoe Perches struct rxrpc_transport *, struct msghdr *, size_t); 530c1b1203dSJoe Perches int rxrpc_server_sendmsg(struct kiocb *, struct rxrpc_sock *, struct msghdr *, 53117926a79SDavid Howells size_t); 53217926a79SDavid Howells 53317926a79SDavid Howells /* 53417926a79SDavid Howells * ar-peer.c 53517926a79SDavid Howells */ 536c1b1203dSJoe Perches struct rxrpc_peer *rxrpc_get_peer(struct sockaddr_rxrpc *, gfp_t); 537c1b1203dSJoe Perches void rxrpc_put_peer(struct rxrpc_peer *); 538c1b1203dSJoe Perches struct rxrpc_peer *rxrpc_find_peer(struct rxrpc_local *, __be32, __be16); 539c1b1203dSJoe Perches void __exit rxrpc_destroy_all_peers(void); 54017926a79SDavid Howells 54117926a79SDavid Howells /* 54217926a79SDavid Howells * ar-proc.c 54317926a79SDavid Howells */ 544036c2e27SJan Engelhardt extern const char *const rxrpc_call_states[]; 545036c2e27SJan Engelhardt extern const struct file_operations rxrpc_call_seq_fops; 546036c2e27SJan Engelhardt extern const struct file_operations rxrpc_connection_seq_fops; 54717926a79SDavid Howells 54817926a79SDavid Howells /* 54917926a79SDavid Howells * ar-recvmsg.c 55017926a79SDavid Howells */ 551c1b1203dSJoe Perches void rxrpc_remove_user_ID(struct rxrpc_sock *, struct rxrpc_call *); 552c1b1203dSJoe Perches int rxrpc_recvmsg(struct kiocb *, struct socket *, struct msghdr *, size_t, 553c1b1203dSJoe Perches int); 55417926a79SDavid Howells 55517926a79SDavid Howells /* 55617926a79SDavid Howells * ar-security.c 55717926a79SDavid Howells */ 558c1b1203dSJoe Perches int rxrpc_register_security(struct rxrpc_security *); 559c1b1203dSJoe Perches void rxrpc_unregister_security(struct rxrpc_security *); 560c1b1203dSJoe Perches int rxrpc_init_client_conn_security(struct rxrpc_connection *); 561c1b1203dSJoe Perches int rxrpc_init_server_conn_security(struct rxrpc_connection *); 562c1b1203dSJoe Perches int rxrpc_secure_packet(const struct rxrpc_call *, struct sk_buff *, size_t, 563c1b1203dSJoe Perches void *); 564c1b1203dSJoe Perches int rxrpc_verify_packet(const struct rxrpc_call *, struct sk_buff *, u32 *); 565c1b1203dSJoe Perches void rxrpc_clear_conn_security(struct rxrpc_connection *); 56617926a79SDavid Howells 56717926a79SDavid Howells /* 56817926a79SDavid Howells * ar-skbuff.c 56917926a79SDavid Howells */ 570c1b1203dSJoe Perches void rxrpc_packet_destructor(struct sk_buff *); 57117926a79SDavid Howells 57217926a79SDavid Howells /* 57317926a79SDavid Howells * ar-transport.c 57417926a79SDavid Howells */ 575c1b1203dSJoe Perches struct rxrpc_transport *rxrpc_get_transport(struct rxrpc_local *, 576c1b1203dSJoe Perches struct rxrpc_peer *, gfp_t); 577c1b1203dSJoe Perches void rxrpc_put_transport(struct rxrpc_transport *); 578c1b1203dSJoe Perches void __exit rxrpc_destroy_all_transports(void); 579c1b1203dSJoe Perches struct rxrpc_transport *rxrpc_find_transport(struct rxrpc_local *, 58017926a79SDavid Howells struct rxrpc_peer *); 58117926a79SDavid Howells 58217926a79SDavid Howells /* 58317926a79SDavid Howells * debug tracing 58417926a79SDavid Howells */ 58595c96174SEric Dumazet extern unsigned int rxrpc_debug; 58617926a79SDavid Howells 58717926a79SDavid Howells #define dbgprintk(FMT,...) \ 5889f389f4bSSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 58917926a79SDavid Howells 5900dc47877SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 5910dc47877SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 59217926a79SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 59317926a79SDavid Howells #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) 59417926a79SDavid Howells #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) 59517926a79SDavid Howells 59617926a79SDavid Howells 59717926a79SDavid Howells #if defined(__KDEBUG) 59817926a79SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 59917926a79SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 60017926a79SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 60117926a79SDavid Howells #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) 60217926a79SDavid Howells #define _net(FMT,...) knet(FMT,##__VA_ARGS__) 60317926a79SDavid Howells 60417926a79SDavid Howells #elif defined(CONFIG_AF_RXRPC_DEBUG) 60517926a79SDavid Howells #define RXRPC_DEBUG_KENTER 0x01 60617926a79SDavid Howells #define RXRPC_DEBUG_KLEAVE 0x02 60717926a79SDavid Howells #define RXRPC_DEBUG_KDEBUG 0x04 60817926a79SDavid Howells #define RXRPC_DEBUG_KPROTO 0x08 60917926a79SDavid Howells #define RXRPC_DEBUG_KNET 0x10 61017926a79SDavid Howells 61117926a79SDavid Howells #define _enter(FMT,...) \ 61217926a79SDavid Howells do { \ 61317926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ 61417926a79SDavid Howells kenter(FMT,##__VA_ARGS__); \ 61517926a79SDavid Howells } while (0) 61617926a79SDavid Howells 61717926a79SDavid Howells #define _leave(FMT,...) \ 61817926a79SDavid Howells do { \ 61917926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ 62017926a79SDavid Howells kleave(FMT,##__VA_ARGS__); \ 62117926a79SDavid Howells } while (0) 62217926a79SDavid Howells 62317926a79SDavid Howells #define _debug(FMT,...) \ 62417926a79SDavid Howells do { \ 62517926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ 62617926a79SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 62717926a79SDavid Howells } while (0) 62817926a79SDavid Howells 62917926a79SDavid Howells #define _proto(FMT,...) \ 63017926a79SDavid Howells do { \ 63117926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ 63217926a79SDavid Howells kproto(FMT,##__VA_ARGS__); \ 63317926a79SDavid Howells } while (0) 63417926a79SDavid Howells 63517926a79SDavid Howells #define _net(FMT,...) \ 63617926a79SDavid Howells do { \ 63717926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ 63817926a79SDavid Howells knet(FMT,##__VA_ARGS__); \ 63917926a79SDavid Howells } while (0) 64017926a79SDavid Howells 64117926a79SDavid Howells #else 64212fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 64312fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 64412fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 64512fdff3fSDavid Howells #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) 64612fdff3fSDavid Howells #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) 64717926a79SDavid Howells #endif 64817926a79SDavid Howells 64917926a79SDavid Howells /* 65017926a79SDavid Howells * debug assertion checking 65117926a79SDavid Howells */ 65217926a79SDavid Howells #if 1 // defined(__KDEBUGALL) 65317926a79SDavid Howells 65417926a79SDavid Howells #define ASSERT(X) \ 65517926a79SDavid Howells do { \ 65617926a79SDavid Howells if (unlikely(!(X))) { \ 65717926a79SDavid Howells printk(KERN_ERR "\n"); \ 65817926a79SDavid Howells printk(KERN_ERR "RxRPC: Assertion failed\n"); \ 65917926a79SDavid Howells BUG(); \ 66017926a79SDavid Howells } \ 66117926a79SDavid Howells } while(0) 66217926a79SDavid Howells 66317926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 66417926a79SDavid Howells do { \ 66517926a79SDavid Howells if (unlikely(!((X) OP (Y)))) { \ 66617926a79SDavid Howells printk(KERN_ERR "\n"); \ 66717926a79SDavid Howells printk(KERN_ERR "RxRPC: Assertion failed\n"); \ 66817926a79SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 66917926a79SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 67017926a79SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 67117926a79SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 67217926a79SDavid Howells BUG(); \ 67317926a79SDavid Howells } \ 67417926a79SDavid Howells } while(0) 67517926a79SDavid Howells 67617926a79SDavid Howells #define ASSERTIF(C, X) \ 67717926a79SDavid Howells do { \ 67817926a79SDavid Howells if (unlikely((C) && !(X))) { \ 67917926a79SDavid Howells printk(KERN_ERR "\n"); \ 68017926a79SDavid Howells printk(KERN_ERR "RxRPC: Assertion failed\n"); \ 68117926a79SDavid Howells BUG(); \ 68217926a79SDavid Howells } \ 68317926a79SDavid Howells } while(0) 68417926a79SDavid Howells 68517926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 68617926a79SDavid Howells do { \ 68717926a79SDavid Howells if (unlikely((C) && !((X) OP (Y)))) { \ 68817926a79SDavid Howells printk(KERN_ERR "\n"); \ 68917926a79SDavid Howells printk(KERN_ERR "RxRPC: Assertion failed\n"); \ 69017926a79SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 69117926a79SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 69217926a79SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 69317926a79SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 69417926a79SDavid Howells BUG(); \ 69517926a79SDavid Howells } \ 69617926a79SDavid Howells } while(0) 69717926a79SDavid Howells 69817926a79SDavid Howells #else 69917926a79SDavid Howells 70017926a79SDavid Howells #define ASSERT(X) \ 70117926a79SDavid Howells do { \ 70217926a79SDavid Howells } while(0) 70317926a79SDavid Howells 70417926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 70517926a79SDavid Howells do { \ 70617926a79SDavid Howells } while(0) 70717926a79SDavid Howells 70817926a79SDavid Howells #define ASSERTIF(C, X) \ 70917926a79SDavid Howells do { \ 71017926a79SDavid Howells } while(0) 71117926a79SDavid Howells 71217926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 71317926a79SDavid Howells do { \ 71417926a79SDavid Howells } while(0) 71517926a79SDavid Howells 71617926a79SDavid Howells #endif /* __KDEBUGALL */ 71717926a79SDavid Howells 71817926a79SDavid Howells /* 71917926a79SDavid Howells * socket buffer accounting / leak finding 72017926a79SDavid Howells */ 72117926a79SDavid Howells static inline void __rxrpc_new_skb(struct sk_buff *skb, const char *fn) 72217926a79SDavid Howells { 72317926a79SDavid Howells //_net("new skb %p %s [%d]", skb, fn, atomic_read(&rxrpc_n_skbs)); 72417926a79SDavid Howells //atomic_inc(&rxrpc_n_skbs); 72517926a79SDavid Howells } 72617926a79SDavid Howells 72717926a79SDavid Howells #define rxrpc_new_skb(skb) __rxrpc_new_skb((skb), __func__) 72817926a79SDavid Howells 72917926a79SDavid Howells static inline void __rxrpc_kill_skb(struct sk_buff *skb, const char *fn) 73017926a79SDavid Howells { 73117926a79SDavid Howells //_net("kill skb %p %s [%d]", skb, fn, atomic_read(&rxrpc_n_skbs)); 73217926a79SDavid Howells //atomic_dec(&rxrpc_n_skbs); 73317926a79SDavid Howells } 73417926a79SDavid Howells 73517926a79SDavid Howells #define rxrpc_kill_skb(skb) __rxrpc_kill_skb((skb), __func__) 73617926a79SDavid Howells 73717926a79SDavid Howells static inline void __rxrpc_free_skb(struct sk_buff *skb, const char *fn) 73817926a79SDavid Howells { 73917926a79SDavid Howells if (skb) { 74017926a79SDavid Howells CHECK_SLAB_OKAY(&skb->users); 74117926a79SDavid Howells //_net("free skb %p %s [%d]", 74217926a79SDavid Howells // skb, fn, atomic_read(&rxrpc_n_skbs)); 74317926a79SDavid Howells //atomic_dec(&rxrpc_n_skbs); 74417926a79SDavid Howells kfree_skb(skb); 74517926a79SDavid Howells } 74617926a79SDavid Howells } 74717926a79SDavid Howells 74817926a79SDavid Howells #define rxrpc_free_skb(skb) __rxrpc_free_skb((skb), __func__) 74917926a79SDavid Howells 75017926a79SDavid Howells static inline void rxrpc_purge_queue(struct sk_buff_head *list) 75117926a79SDavid Howells { 75217926a79SDavid Howells struct sk_buff *skb; 75317926a79SDavid Howells while ((skb = skb_dequeue((list))) != NULL) 75417926a79SDavid Howells rxrpc_free_skb(skb); 75517926a79SDavid Howells } 75617926a79SDavid Howells 75717926a79SDavid Howells static inline void __rxrpc_get_local(struct rxrpc_local *local, const char *f) 75817926a79SDavid Howells { 75917926a79SDavid Howells CHECK_SLAB_OKAY(&local->usage); 76017926a79SDavid Howells if (atomic_inc_return(&local->usage) == 1) 76117926a79SDavid Howells printk("resurrected (%s)\n", f); 76217926a79SDavid Howells } 76317926a79SDavid Howells 76417926a79SDavid Howells #define rxrpc_get_local(LOCAL) __rxrpc_get_local((LOCAL), __func__) 76517926a79SDavid Howells 76617926a79SDavid Howells #define rxrpc_get_call(CALL) \ 76717926a79SDavid Howells do { \ 76817926a79SDavid Howells CHECK_SLAB_OKAY(&(CALL)->usage); \ 76917926a79SDavid Howells if (atomic_inc_return(&(CALL)->usage) == 1) \ 77017926a79SDavid Howells BUG(); \ 77117926a79SDavid Howells } while(0) 77217926a79SDavid Howells 77317926a79SDavid Howells #define rxrpc_put_call(CALL) \ 77417926a79SDavid Howells do { \ 77517926a79SDavid Howells __rxrpc_put_call(CALL); \ 77617926a79SDavid Howells } while(0) 777