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 extern atomic_t rxrpc_n_skbs; 2317926a79SDavid Howells 2417926a79SDavid Howells #define FCRYPT_BSIZE 8 2517926a79SDavid Howells struct rxrpc_crypt { 2617926a79SDavid Howells union { 2717926a79SDavid Howells u8 x[FCRYPT_BSIZE]; 2817926a79SDavid Howells u32 n[2]; 2917926a79SDavid Howells }; 3017926a79SDavid Howells } __attribute__((aligned(8))); 3117926a79SDavid Howells 3217926a79SDavid Howells extern __be32 rxrpc_epoch; /* local epoch for detecting local-end reset */ 3317926a79SDavid Howells extern atomic_t rxrpc_debug_id; /* current debugging ID */ 3417926a79SDavid Howells 3517926a79SDavid Howells /* 3617926a79SDavid Howells * sk_state for RxRPC sockets 3717926a79SDavid Howells */ 3817926a79SDavid Howells enum { 3917926a79SDavid Howells RXRPC_UNCONNECTED = 0, 4017926a79SDavid Howells RXRPC_CLIENT_BOUND, /* client local address bound */ 4117926a79SDavid Howells RXRPC_CLIENT_CONNECTED, /* client is connected */ 4217926a79SDavid Howells RXRPC_SERVER_BOUND, /* server local address bound */ 4317926a79SDavid Howells RXRPC_SERVER_LISTENING, /* server listening for connections */ 4417926a79SDavid Howells RXRPC_CLOSE, /* socket is being closed */ 4517926a79SDavid Howells }; 4617926a79SDavid Howells 4717926a79SDavid Howells /* 4817926a79SDavid Howells * RxRPC socket definition 4917926a79SDavid Howells */ 5017926a79SDavid Howells struct rxrpc_sock { 5117926a79SDavid Howells /* WARNING: sk has to be the first member */ 5217926a79SDavid Howells struct sock sk; 5317926a79SDavid Howells struct rxrpc_local *local; /* local endpoint */ 5417926a79SDavid Howells struct rxrpc_transport *trans; /* transport handler */ 5517926a79SDavid Howells struct rxrpc_conn_bundle *bundle; /* virtual connection bundle */ 5617926a79SDavid Howells struct rxrpc_connection *conn; /* exclusive virtual connection */ 5717926a79SDavid Howells struct list_head listen_link; /* link in the local endpoint's listen list */ 5817926a79SDavid Howells struct list_head secureq; /* calls awaiting connection security clearance */ 5917926a79SDavid Howells struct list_head acceptq; /* calls awaiting acceptance */ 6017926a79SDavid Howells struct key *key; /* security for this socket */ 6117926a79SDavid Howells struct key *securities; /* list of server security descriptors */ 6217926a79SDavid Howells struct rb_root calls; /* outstanding calls on this socket */ 6317926a79SDavid Howells unsigned long flags; 6417926a79SDavid Howells #define RXRPC_SOCK_EXCLUSIVE_CONN 1 /* exclusive connection for a client socket */ 6517926a79SDavid Howells rwlock_t call_lock; /* lock for calls */ 6617926a79SDavid Howells u32 min_sec_level; /* minimum security level */ 6717926a79SDavid Howells #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT 6817926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 6917926a79SDavid Howells sa_family_t proto; /* protocol created with */ 7017926a79SDavid Howells __be16 service_id; /* service ID of local/remote service */ 7117926a79SDavid Howells }; 7217926a79SDavid Howells 7317926a79SDavid Howells #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) 7417926a79SDavid Howells 7517926a79SDavid Howells /* 7617926a79SDavid Howells * RxRPC socket buffer private variables 7717926a79SDavid Howells * - max 48 bytes (struct sk_buff::cb) 7817926a79SDavid Howells */ 7917926a79SDavid Howells struct rxrpc_skb_priv { 8017926a79SDavid Howells struct rxrpc_call *call; /* call with which associated */ 8117926a79SDavid Howells unsigned long resend_at; /* time in jiffies at which to resend */ 8217926a79SDavid Howells union { 8317926a79SDavid Howells unsigned offset; /* offset into buffer of next read */ 8417926a79SDavid Howells int remain; /* amount of space remaining for next write */ 8517926a79SDavid Howells u32 error; /* network error code */ 8617926a79SDavid Howells bool need_resend; /* T if needs resending */ 8717926a79SDavid Howells }; 8817926a79SDavid Howells 8917926a79SDavid Howells struct rxrpc_header hdr; /* RxRPC packet header from this packet */ 9017926a79SDavid Howells }; 9117926a79SDavid Howells 9217926a79SDavid Howells #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) 9317926a79SDavid Howells 9417926a79SDavid Howells enum { 9517926a79SDavid Howells RXRPC_SKB_MARK_DATA, /* data message */ 9617926a79SDavid Howells RXRPC_SKB_MARK_FINAL_ACK, /* final ACK received message */ 9717926a79SDavid Howells RXRPC_SKB_MARK_BUSY, /* server busy message */ 9817926a79SDavid Howells RXRPC_SKB_MARK_REMOTE_ABORT, /* remote abort message */ 9917926a79SDavid Howells RXRPC_SKB_MARK_NET_ERROR, /* network error message */ 10017926a79SDavid Howells RXRPC_SKB_MARK_LOCAL_ERROR, /* local error message */ 10117926a79SDavid Howells RXRPC_SKB_MARK_NEW_CALL, /* local error message */ 10217926a79SDavid Howells }; 10317926a79SDavid Howells 10417926a79SDavid Howells enum rxrpc_command { 10517926a79SDavid Howells RXRPC_CMD_SEND_DATA, /* send data message */ 10617926a79SDavid Howells RXRPC_CMD_SEND_ABORT, /* request abort generation */ 10717926a79SDavid Howells RXRPC_CMD_ACCEPT, /* [server] accept incoming call */ 10817926a79SDavid Howells RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */ 10917926a79SDavid Howells }; 11017926a79SDavid Howells 11117926a79SDavid Howells /* 11217926a79SDavid Howells * RxRPC security module interface 11317926a79SDavid Howells */ 11417926a79SDavid Howells struct rxrpc_security { 11517926a79SDavid Howells struct module *owner; /* providing module */ 11617926a79SDavid Howells struct list_head link; /* link in master list */ 11717926a79SDavid Howells const char *name; /* name of this service */ 11817926a79SDavid Howells u8 security_index; /* security type provided */ 11917926a79SDavid Howells 12017926a79SDavid Howells /* initialise a connection's security */ 12117926a79SDavid Howells int (*init_connection_security)(struct rxrpc_connection *); 12217926a79SDavid Howells 12317926a79SDavid Howells /* prime a connection's packet security */ 12417926a79SDavid Howells void (*prime_packet_security)(struct rxrpc_connection *); 12517926a79SDavid Howells 12617926a79SDavid Howells /* impose security on a packet */ 12717926a79SDavid Howells int (*secure_packet)(const struct rxrpc_call *, 12817926a79SDavid Howells struct sk_buff *, 12917926a79SDavid Howells size_t, 13017926a79SDavid Howells void *); 13117926a79SDavid Howells 13217926a79SDavid Howells /* verify the security on a received packet */ 13317926a79SDavid Howells int (*verify_packet)(const struct rxrpc_call *, struct sk_buff *, 13417926a79SDavid Howells u32 *); 13517926a79SDavid Howells 13617926a79SDavid Howells /* issue a challenge */ 13717926a79SDavid Howells int (*issue_challenge)(struct rxrpc_connection *); 13817926a79SDavid Howells 13917926a79SDavid Howells /* respond to a challenge */ 14017926a79SDavid Howells int (*respond_to_challenge)(struct rxrpc_connection *, 14117926a79SDavid Howells struct sk_buff *, 14217926a79SDavid Howells u32 *); 14317926a79SDavid Howells 14417926a79SDavid Howells /* verify a response */ 14517926a79SDavid Howells int (*verify_response)(struct rxrpc_connection *, 14617926a79SDavid Howells struct sk_buff *, 14717926a79SDavid Howells u32 *); 14817926a79SDavid Howells 14917926a79SDavid Howells /* clear connection security */ 15017926a79SDavid Howells void (*clear)(struct rxrpc_connection *); 15117926a79SDavid Howells }; 15217926a79SDavid Howells 15317926a79SDavid Howells /* 15417926a79SDavid Howells * RxRPC local transport endpoint definition 15517926a79SDavid Howells * - matched by local port, address and protocol type 15617926a79SDavid Howells */ 15717926a79SDavid Howells struct rxrpc_local { 15817926a79SDavid Howells struct socket *socket; /* my UDP socket */ 15917926a79SDavid Howells struct work_struct destroyer; /* endpoint destroyer */ 16017926a79SDavid Howells struct work_struct acceptor; /* incoming call processor */ 16117926a79SDavid Howells struct work_struct rejecter; /* packet reject writer */ 16217926a79SDavid Howells struct list_head services; /* services listening on this endpoint */ 16317926a79SDavid Howells struct list_head link; /* link in endpoint list */ 16417926a79SDavid Howells struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ 16517926a79SDavid Howells struct sk_buff_head accept_queue; /* incoming calls awaiting acceptance */ 16617926a79SDavid Howells struct sk_buff_head reject_queue; /* packets awaiting rejection */ 16717926a79SDavid Howells spinlock_t lock; /* access lock */ 16817926a79SDavid Howells rwlock_t services_lock; /* lock for services list */ 16917926a79SDavid Howells atomic_t usage; 17017926a79SDavid Howells int debug_id; /* debug ID for printks */ 17117926a79SDavid Howells volatile char error_rcvd; /* T if received ICMP error outstanding */ 17217926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 17317926a79SDavid Howells }; 17417926a79SDavid Howells 17517926a79SDavid Howells /* 17617926a79SDavid Howells * RxRPC remote transport endpoint definition 17717926a79SDavid Howells * - matched by remote port, address and protocol type 17817926a79SDavid Howells * - holds the connection ID counter for connections between the two endpoints 17917926a79SDavid Howells */ 18017926a79SDavid Howells struct rxrpc_peer { 18117926a79SDavid Howells struct work_struct destroyer; /* peer destroyer */ 18217926a79SDavid Howells struct list_head link; /* link in master peer list */ 18317926a79SDavid Howells struct list_head error_targets; /* targets for net error distribution */ 18417926a79SDavid Howells spinlock_t lock; /* access lock */ 18517926a79SDavid Howells atomic_t usage; 18617926a79SDavid Howells unsigned if_mtu; /* interface MTU for this peer */ 18717926a79SDavid Howells unsigned mtu; /* network MTU for this peer */ 18817926a79SDavid Howells unsigned maxdata; /* data size (MTU - hdrsize) */ 18917926a79SDavid Howells unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ 19017926a79SDavid Howells int debug_id; /* debug ID for printks */ 19117926a79SDavid Howells int net_error; /* network error distributed */ 19217926a79SDavid Howells struct sockaddr_rxrpc srx; /* remote address */ 19317926a79SDavid Howells 19417926a79SDavid Howells /* calculated RTT cache */ 19517926a79SDavid Howells #define RXRPC_RTT_CACHE_SIZE 32 19617926a79SDavid Howells suseconds_t rtt; /* current RTT estimate (in uS) */ 19717926a79SDavid Howells unsigned rtt_point; /* next entry at which to insert */ 19817926a79SDavid Howells unsigned rtt_usage; /* amount of cache actually used */ 19917926a79SDavid Howells suseconds_t rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* calculated RTT cache */ 20017926a79SDavid Howells }; 20117926a79SDavid Howells 20217926a79SDavid Howells /* 20317926a79SDavid Howells * RxRPC point-to-point transport / connection manager definition 20417926a79SDavid Howells * - handles a bundle of connections between two endpoints 20517926a79SDavid Howells * - matched by { local, peer } 20617926a79SDavid Howells */ 20717926a79SDavid Howells struct rxrpc_transport { 20817926a79SDavid Howells struct rxrpc_local *local; /* local transport endpoint */ 20917926a79SDavid Howells struct rxrpc_peer *peer; /* remote transport endpoint */ 21017926a79SDavid Howells struct work_struct error_handler; /* network error distributor */ 21117926a79SDavid Howells struct rb_root bundles; /* client connection bundles on this transport */ 21217926a79SDavid Howells struct rb_root client_conns; /* client connections on this transport */ 21317926a79SDavid Howells struct rb_root server_conns; /* server connections on this transport */ 21417926a79SDavid Howells struct list_head link; /* link in master session list */ 21517926a79SDavid Howells struct sk_buff_head error_queue; /* error packets awaiting processing */ 21617926a79SDavid Howells time_t put_time; /* time at which to reap */ 21717926a79SDavid Howells spinlock_t client_lock; /* client connection allocation lock */ 21817926a79SDavid Howells rwlock_t conn_lock; /* lock for active/dead connections */ 21917926a79SDavid Howells atomic_t usage; 22017926a79SDavid Howells int debug_id; /* debug ID for printks */ 22117926a79SDavid Howells unsigned int conn_idcounter; /* connection ID counter (client) */ 22217926a79SDavid Howells }; 22317926a79SDavid Howells 22417926a79SDavid Howells /* 22517926a79SDavid Howells * RxRPC client connection bundle 22617926a79SDavid Howells * - matched by { transport, service_id, key } 22717926a79SDavid Howells */ 22817926a79SDavid Howells struct rxrpc_conn_bundle { 22917926a79SDavid Howells struct rb_node node; /* node in transport's lookup tree */ 23017926a79SDavid Howells struct list_head unused_conns; /* unused connections in this bundle */ 23117926a79SDavid Howells struct list_head avail_conns; /* available connections in this bundle */ 23217926a79SDavid Howells struct list_head busy_conns; /* busy connections in this bundle */ 23317926a79SDavid Howells struct key *key; /* security for this bundle */ 23417926a79SDavid Howells wait_queue_head_t chanwait; /* wait for channel to become available */ 23517926a79SDavid Howells atomic_t usage; 23617926a79SDavid Howells int debug_id; /* debug ID for printks */ 23717926a79SDavid Howells unsigned short num_conns; /* number of connections in this bundle */ 23817926a79SDavid Howells __be16 service_id; /* service ID */ 23917926a79SDavid Howells uint8_t security_ix; /* security type */ 24017926a79SDavid Howells }; 24117926a79SDavid Howells 24217926a79SDavid Howells /* 24317926a79SDavid Howells * RxRPC connection definition 24417926a79SDavid Howells * - matched by { transport, service_id, conn_id, direction, key } 24517926a79SDavid Howells * - each connection can only handle four simultaneous calls 24617926a79SDavid Howells */ 24717926a79SDavid Howells struct rxrpc_connection { 24817926a79SDavid Howells struct rxrpc_transport *trans; /* transport session */ 24917926a79SDavid Howells struct rxrpc_conn_bundle *bundle; /* connection bundle (client) */ 25017926a79SDavid Howells struct work_struct processor; /* connection event processor */ 25117926a79SDavid Howells struct rb_node node; /* node in transport's lookup tree */ 25217926a79SDavid Howells struct list_head link; /* link in master connection list */ 25317926a79SDavid Howells struct list_head bundle_link; /* link in bundle */ 25417926a79SDavid Howells struct rb_root calls; /* calls on this connection */ 25517926a79SDavid Howells struct sk_buff_head rx_queue; /* received conn-level packets */ 25617926a79SDavid Howells struct rxrpc_call *channels[RXRPC_MAXCALLS]; /* channels (active calls) */ 25717926a79SDavid Howells struct rxrpc_security *security; /* applied security module */ 25817926a79SDavid Howells struct key *key; /* security for this connection (client) */ 25917926a79SDavid Howells struct key *server_key; /* security for this service */ 26017926a79SDavid Howells struct crypto_blkcipher *cipher; /* encryption handle */ 26117926a79SDavid Howells struct rxrpc_crypt csum_iv; /* packet checksum base */ 26217926a79SDavid Howells unsigned long events; 26317926a79SDavid Howells #define RXRPC_CONN_CHALLENGE 0 /* send challenge packet */ 26417926a79SDavid Howells time_t put_time; /* time at which to reap */ 26517926a79SDavid Howells rwlock_t lock; /* access lock */ 26617926a79SDavid Howells spinlock_t state_lock; /* state-change lock */ 26717926a79SDavid Howells atomic_t usage; 26817926a79SDavid Howells u32 real_conn_id; /* connection ID (host-endian) */ 26917926a79SDavid Howells enum { /* current state of connection */ 27017926a79SDavid Howells RXRPC_CONN_UNUSED, /* - connection not yet attempted */ 27117926a79SDavid Howells RXRPC_CONN_CLIENT, /* - client connection */ 27217926a79SDavid Howells RXRPC_CONN_SERVER_UNSECURED, /* - server unsecured connection */ 27317926a79SDavid Howells RXRPC_CONN_SERVER_CHALLENGING, /* - server challenging for security */ 27417926a79SDavid Howells RXRPC_CONN_SERVER, /* - server secured connection */ 27517926a79SDavid Howells RXRPC_CONN_REMOTELY_ABORTED, /* - conn aborted by peer */ 27617926a79SDavid Howells RXRPC_CONN_LOCALLY_ABORTED, /* - conn aborted locally */ 27717926a79SDavid Howells RXRPC_CONN_NETWORK_ERROR, /* - conn terminated by network error */ 27817926a79SDavid Howells } state; 27917926a79SDavid Howells int error; /* error code for local abort */ 28017926a79SDavid Howells int debug_id; /* debug ID for printks */ 28117926a79SDavid Howells unsigned call_counter; /* call ID counter */ 28217926a79SDavid Howells atomic_t serial; /* packet serial number counter */ 28317926a79SDavid Howells atomic_t hi_serial; /* highest serial number received */ 28417926a79SDavid Howells u8 avail_calls; /* number of calls available */ 28517926a79SDavid Howells u8 size_align; /* data size alignment (for security) */ 28617926a79SDavid Howells u8 header_size; /* rxrpc + security header size */ 28717926a79SDavid Howells u8 security_size; /* security header size */ 28817926a79SDavid Howells u32 security_level; /* security level negotiated */ 28917926a79SDavid Howells u32 security_nonce; /* response re-use preventer */ 29017926a79SDavid Howells 29117926a79SDavid Howells /* the following are all in net order */ 29217926a79SDavid Howells __be32 epoch; /* epoch of this connection */ 29317926a79SDavid Howells __be32 cid; /* connection ID */ 29417926a79SDavid Howells __be16 service_id; /* service ID */ 29517926a79SDavid Howells u8 security_ix; /* security type */ 29617926a79SDavid Howells u8 in_clientflag; /* RXRPC_CLIENT_INITIATED if we are server */ 29717926a79SDavid Howells u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ 29817926a79SDavid Howells }; 29917926a79SDavid Howells 30017926a79SDavid Howells /* 30117926a79SDavid Howells * RxRPC call definition 30217926a79SDavid Howells * - matched by { connection, call_id } 30317926a79SDavid Howells */ 30417926a79SDavid Howells struct rxrpc_call { 30517926a79SDavid Howells struct rxrpc_connection *conn; /* connection carrying call */ 30617926a79SDavid Howells struct rxrpc_sock *socket; /* socket responsible */ 30717926a79SDavid Howells struct timer_list lifetimer; /* lifetime remaining on call */ 30817926a79SDavid Howells struct timer_list deadspan; /* reap timer for re-ACK'ing, etc */ 30917926a79SDavid Howells struct timer_list ack_timer; /* ACK generation timer */ 31017926a79SDavid Howells struct timer_list resend_timer; /* Tx resend timer */ 31117926a79SDavid Howells struct work_struct destroyer; /* call destroyer */ 31217926a79SDavid Howells struct work_struct processor; /* packet processor and ACK generator */ 31317926a79SDavid Howells struct list_head link; /* link in master call list */ 31417926a79SDavid Howells struct list_head error_link; /* link in error distribution list */ 31517926a79SDavid Howells struct list_head accept_link; /* calls awaiting acceptance */ 31617926a79SDavid Howells struct rb_node sock_node; /* node in socket call tree */ 31717926a79SDavid Howells struct rb_node conn_node; /* node in connection call tree */ 31817926a79SDavid Howells struct sk_buff_head rx_queue; /* received packets */ 31917926a79SDavid Howells struct sk_buff_head rx_oos_queue; /* packets received out of sequence */ 32017926a79SDavid Howells struct sk_buff *tx_pending; /* Tx socket buffer being filled */ 32117926a79SDavid Howells wait_queue_head_t tx_waitq; /* wait for Tx window space to become available */ 32217926a79SDavid Howells unsigned long user_call_ID; /* user-defined call ID */ 32317926a79SDavid Howells unsigned long creation_jif; /* time of call creation */ 32417926a79SDavid Howells unsigned long flags; 32517926a79SDavid Howells #define RXRPC_CALL_RELEASED 0 /* call has been released - no more message to userspace */ 32617926a79SDavid Howells #define RXRPC_CALL_TERMINAL_MSG 1 /* call has given the socket its final message */ 32717926a79SDavid Howells #define RXRPC_CALL_RCVD_LAST 2 /* all packets received */ 32817926a79SDavid Howells #define RXRPC_CALL_RUN_RTIMER 3 /* Tx resend timer started */ 32917926a79SDavid Howells #define RXRPC_CALL_TX_SOFT_ACK 4 /* sent some soft ACKs */ 33017926a79SDavid Howells #define RXRPC_CALL_PROC_BUSY 5 /* the processor is busy */ 33117926a79SDavid Howells #define RXRPC_CALL_INIT_ACCEPT 6 /* acceptance was initiated */ 33217926a79SDavid Howells #define RXRPC_CALL_HAS_USERID 7 /* has a user ID attached */ 33317926a79SDavid Howells #define RXRPC_CALL_EXPECT_OOS 8 /* expect out of sequence packets */ 33417926a79SDavid Howells unsigned long events; 33517926a79SDavid Howells #define RXRPC_CALL_RCVD_ACKALL 0 /* ACKALL or reply received */ 33617926a79SDavid Howells #define RXRPC_CALL_RCVD_BUSY 1 /* busy packet received */ 33717926a79SDavid Howells #define RXRPC_CALL_RCVD_ABORT 2 /* abort packet received */ 33817926a79SDavid Howells #define RXRPC_CALL_RCVD_ERROR 3 /* network error received */ 33917926a79SDavid Howells #define RXRPC_CALL_ACK_FINAL 4 /* need to generate final ACK (and release call) */ 34017926a79SDavid Howells #define RXRPC_CALL_ACK 5 /* need to generate ACK */ 34117926a79SDavid Howells #define RXRPC_CALL_REJECT_BUSY 6 /* need to generate busy message */ 34217926a79SDavid Howells #define RXRPC_CALL_ABORT 7 /* need to generate abort */ 34317926a79SDavid Howells #define RXRPC_CALL_CONN_ABORT 8 /* local connection abort generated */ 34417926a79SDavid Howells #define RXRPC_CALL_RESEND_TIMER 9 /* Tx resend timer expired */ 34517926a79SDavid Howells #define RXRPC_CALL_RESEND 10 /* Tx resend required */ 34617926a79SDavid Howells #define RXRPC_CALL_DRAIN_RX_OOS 11 /* drain the Rx out of sequence queue */ 34717926a79SDavid Howells #define RXRPC_CALL_LIFE_TIMER 12 /* call's lifetimer ran out */ 34817926a79SDavid Howells #define RXRPC_CALL_ACCEPTED 13 /* incoming call accepted by userspace app */ 34917926a79SDavid Howells #define RXRPC_CALL_SECURED 14 /* incoming call's connection is now secure */ 35017926a79SDavid Howells #define RXRPC_CALL_POST_ACCEPT 15 /* need to post an "accept?" message to the app */ 35117926a79SDavid Howells #define RXRPC_CALL_RELEASE 16 /* need to release the call's resources */ 35217926a79SDavid Howells 35317926a79SDavid Howells spinlock_t lock; 35417926a79SDavid Howells rwlock_t state_lock; /* lock for state transition */ 35517926a79SDavid Howells atomic_t usage; 35617926a79SDavid Howells atomic_t sequence; /* Tx data packet sequence counter */ 35717926a79SDavid Howells u32 abort_code; /* local/remote abort code */ 35817926a79SDavid Howells enum { /* current state of call */ 35917926a79SDavid Howells RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ 36017926a79SDavid Howells RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ 36117926a79SDavid Howells RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ 36217926a79SDavid Howells RXRPC_CALL_CLIENT_FINAL_ACK, /* - client sending final ACK phase */ 36317926a79SDavid Howells RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ 36417926a79SDavid Howells RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ 36517926a79SDavid Howells RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ 36617926a79SDavid Howells RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ 36717926a79SDavid Howells RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ 36817926a79SDavid Howells RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ 36917926a79SDavid Howells RXRPC_CALL_COMPLETE, /* - call completed */ 37017926a79SDavid Howells RXRPC_CALL_SERVER_BUSY, /* - call rejected by busy server */ 37117926a79SDavid Howells RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ 37217926a79SDavid Howells RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ 37317926a79SDavid Howells RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ 37417926a79SDavid Howells RXRPC_CALL_DEAD, /* - call is dead */ 37517926a79SDavid Howells } state; 37617926a79SDavid Howells int debug_id; /* debug ID for printks */ 37717926a79SDavid Howells u8 channel; /* connection channel occupied by this call */ 37817926a79SDavid Howells 37917926a79SDavid Howells /* transmission-phase ACK management */ 38017926a79SDavid Howells uint8_t acks_head; /* offset into window of first entry */ 38117926a79SDavid Howells uint8_t acks_tail; /* offset into window of last entry */ 38217926a79SDavid Howells uint8_t acks_winsz; /* size of un-ACK'd window */ 38317926a79SDavid Howells uint8_t acks_unacked; /* lowest unacked packet in last ACK received */ 38417926a79SDavid Howells int acks_latest; /* serial number of latest ACK received */ 38517926a79SDavid Howells rxrpc_seq_t acks_hard; /* highest definitively ACK'd msg seq */ 38617926a79SDavid Howells unsigned long *acks_window; /* sent packet window 38717926a79SDavid Howells * - elements are pointers with LSB set if ACK'd 38817926a79SDavid Howells */ 38917926a79SDavid Howells 39017926a79SDavid Howells /* receive-phase ACK management */ 39117926a79SDavid Howells rxrpc_seq_t rx_data_expect; /* next data seq ID expected to be received */ 39217926a79SDavid Howells rxrpc_seq_t rx_data_post; /* next data seq ID expected to be posted */ 39317926a79SDavid Howells rxrpc_seq_t rx_data_recv; /* last data seq ID encountered by recvmsg */ 39417926a79SDavid Howells rxrpc_seq_t rx_data_eaten; /* last data seq ID consumed by recvmsg */ 39517926a79SDavid Howells rxrpc_seq_t rx_first_oos; /* first packet in rx_oos_queue (or 0) */ 39617926a79SDavid Howells rxrpc_seq_t ackr_win_top; /* top of ACK window (rx_data_eaten is bottom) */ 39717926a79SDavid Howells rxrpc_seq_net_t ackr_prev_seq; /* previous sequence number received */ 39817926a79SDavid Howells uint8_t ackr_reason; /* reason to ACK */ 39917926a79SDavid Howells __be32 ackr_serial; /* serial of packet being ACK'd */ 40017926a79SDavid Howells atomic_t ackr_not_idle; /* number of packets in Rx queue */ 40117926a79SDavid Howells 40217926a79SDavid Howells /* received packet records, 1 bit per record */ 40317926a79SDavid Howells #define RXRPC_ACKR_WINDOW_ASZ DIV_ROUND_UP(RXRPC_MAXACKS, BITS_PER_LONG) 40417926a79SDavid Howells unsigned long ackr_window[RXRPC_ACKR_WINDOW_ASZ + 1]; 40517926a79SDavid Howells 40617926a79SDavid Howells /* the following should all be in net order */ 40717926a79SDavid Howells __be32 cid; /* connection ID + channel index */ 40817926a79SDavid Howells __be32 call_id; /* call ID on connection */ 40917926a79SDavid Howells }; 41017926a79SDavid Howells 41117926a79SDavid Howells /* 41217926a79SDavid Howells * RxRPC key for Kerberos (type-2 security) 41317926a79SDavid Howells */ 41417926a79SDavid Howells struct rxkad_key { 41517926a79SDavid Howells u16 security_index; /* RxRPC header security index */ 41617926a79SDavid Howells u16 ticket_len; /* length of ticket[] */ 41717926a79SDavid Howells u32 expiry; /* time at which expires */ 41817926a79SDavid Howells u32 kvno; /* key version number */ 41917926a79SDavid Howells u8 session_key[8]; /* DES session key */ 42017926a79SDavid Howells u8 ticket[0]; /* the encrypted ticket */ 42117926a79SDavid Howells }; 42217926a79SDavid Howells 42317926a79SDavid Howells struct rxrpc_key_payload { 42417926a79SDavid Howells struct rxkad_key k; 42517926a79SDavid Howells }; 42617926a79SDavid Howells 42717926a79SDavid Howells /* 42817926a79SDavid Howells * locally abort an RxRPC call 42917926a79SDavid Howells */ 43017926a79SDavid Howells static inline void rxrpc_abort_call(struct rxrpc_call *call, u32 abort_code) 43117926a79SDavid Howells { 43217926a79SDavid Howells write_lock_bh(&call->state_lock); 43317926a79SDavid Howells if (call->state < RXRPC_CALL_COMPLETE) { 43417926a79SDavid Howells call->abort_code = abort_code; 43517926a79SDavid Howells call->state = RXRPC_CALL_LOCALLY_ABORTED; 43617926a79SDavid Howells set_bit(RXRPC_CALL_ABORT, &call->events); 43717926a79SDavid Howells } 43817926a79SDavid Howells write_unlock_bh(&call->state_lock); 43917926a79SDavid Howells } 44017926a79SDavid Howells 44117926a79SDavid Howells /* 44217926a79SDavid Howells * put a packet up for transport-level abort 44317926a79SDavid Howells */ 44417926a79SDavid Howells static inline 44517926a79SDavid Howells void rxrpc_reject_packet(struct rxrpc_local *local, struct sk_buff *skb) 44617926a79SDavid Howells { 44717926a79SDavid Howells CHECK_SLAB_OKAY(&local->usage); 44817926a79SDavid Howells if (!atomic_inc_not_zero(&local->usage)) { 44917926a79SDavid Howells printk("resurrected on reject\n"); 45017926a79SDavid Howells BUG(); 45117926a79SDavid Howells } 45217926a79SDavid Howells skb_queue_tail(&local->reject_queue, skb); 45317926a79SDavid Howells schedule_work(&local->rejecter); 45417926a79SDavid Howells } 45517926a79SDavid Howells 45617926a79SDavid Howells /* 45717926a79SDavid Howells * ar-accept.c 45817926a79SDavid Howells */ 45917926a79SDavid Howells extern void rxrpc_accept_incoming_calls(struct work_struct *); 46017926a79SDavid Howells extern int rxrpc_accept_call(struct rxrpc_sock *, unsigned long); 46117926a79SDavid Howells 46217926a79SDavid Howells /* 46317926a79SDavid Howells * ar-ack.c 46417926a79SDavid Howells */ 46517926a79SDavid Howells extern void __rxrpc_propose_ACK(struct rxrpc_call *, uint8_t, __be32, bool); 46617926a79SDavid Howells extern void rxrpc_propose_ACK(struct rxrpc_call *, uint8_t, __be32, bool); 46717926a79SDavid Howells extern void rxrpc_process_call(struct work_struct *); 46817926a79SDavid Howells 46917926a79SDavid Howells /* 47017926a79SDavid Howells * ar-call.c 47117926a79SDavid Howells */ 47217926a79SDavid Howells extern struct kmem_cache *rxrpc_call_jar; 47317926a79SDavid Howells extern struct list_head rxrpc_calls; 47417926a79SDavid Howells extern rwlock_t rxrpc_call_lock; 47517926a79SDavid Howells 47617926a79SDavid Howells extern struct rxrpc_call *rxrpc_get_client_call(struct rxrpc_sock *, 47717926a79SDavid Howells struct rxrpc_transport *, 47817926a79SDavid Howells struct rxrpc_conn_bundle *, 47917926a79SDavid Howells unsigned long, int, gfp_t); 48017926a79SDavid Howells extern struct rxrpc_call *rxrpc_incoming_call(struct rxrpc_sock *, 48117926a79SDavid Howells struct rxrpc_connection *, 48217926a79SDavid Howells struct rxrpc_header *, gfp_t); 48317926a79SDavid Howells extern struct rxrpc_call *rxrpc_find_server_call(struct rxrpc_sock *, 48417926a79SDavid Howells unsigned long); 48517926a79SDavid Howells extern void rxrpc_release_call(struct rxrpc_call *); 48617926a79SDavid Howells extern void rxrpc_release_calls_on_socket(struct rxrpc_sock *); 48717926a79SDavid Howells extern void __rxrpc_put_call(struct rxrpc_call *); 48817926a79SDavid Howells extern void __exit rxrpc_destroy_all_calls(void); 48917926a79SDavid Howells 49017926a79SDavid Howells /* 49117926a79SDavid Howells * ar-connection.c 49217926a79SDavid Howells */ 49317926a79SDavid Howells extern struct list_head rxrpc_connections; 49417926a79SDavid Howells extern rwlock_t rxrpc_connection_lock; 49517926a79SDavid Howells 49617926a79SDavid Howells extern struct rxrpc_conn_bundle *rxrpc_get_bundle(struct rxrpc_sock *, 49717926a79SDavid Howells struct rxrpc_transport *, 49817926a79SDavid Howells struct key *, 49917926a79SDavid Howells __be16, gfp_t); 50017926a79SDavid Howells extern void rxrpc_put_bundle(struct rxrpc_transport *, 50117926a79SDavid Howells struct rxrpc_conn_bundle *); 50217926a79SDavid Howells extern int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_transport *, 50317926a79SDavid Howells struct rxrpc_conn_bundle *, struct rxrpc_call *, 50417926a79SDavid Howells gfp_t); 50517926a79SDavid Howells extern void rxrpc_put_connection(struct rxrpc_connection *); 50617926a79SDavid Howells extern void __exit rxrpc_destroy_all_connections(void); 50717926a79SDavid Howells extern struct rxrpc_connection *rxrpc_find_connection(struct rxrpc_transport *, 50817926a79SDavid Howells struct rxrpc_header *); 50917926a79SDavid Howells extern struct rxrpc_connection * 51017926a79SDavid Howells rxrpc_incoming_connection(struct rxrpc_transport *, struct rxrpc_header *, 51117926a79SDavid Howells gfp_t); 51217926a79SDavid Howells 51317926a79SDavid Howells /* 51417926a79SDavid Howells * ar-connevent.c 51517926a79SDavid Howells */ 51617926a79SDavid Howells extern void rxrpc_process_connection(struct work_struct *); 51717926a79SDavid Howells extern void rxrpc_reject_packets(struct work_struct *); 51817926a79SDavid Howells 51917926a79SDavid Howells /* 52017926a79SDavid Howells * ar-error.c 52117926a79SDavid Howells */ 52217926a79SDavid Howells extern void rxrpc_UDP_error_report(struct sock *); 52317926a79SDavid Howells extern void rxrpc_UDP_error_handler(struct work_struct *); 52417926a79SDavid Howells 52517926a79SDavid Howells /* 52617926a79SDavid Howells * ar-input.c 52717926a79SDavid Howells */ 52817926a79SDavid Howells extern unsigned long rxrpc_ack_timeout; 52917926a79SDavid Howells extern const char *rxrpc_pkts[]; 53017926a79SDavid Howells 53117926a79SDavid Howells extern void rxrpc_data_ready(struct sock *, int); 53217926a79SDavid Howells extern int rxrpc_queue_rcv_skb(struct rxrpc_call *, struct sk_buff *, bool, 53317926a79SDavid Howells bool); 53417926a79SDavid Howells extern void rxrpc_fast_process_packet(struct rxrpc_call *, struct sk_buff *); 53517926a79SDavid Howells 53617926a79SDavid Howells /* 53717926a79SDavid Howells * ar-local.c 53817926a79SDavid Howells */ 53917926a79SDavid Howells extern rwlock_t rxrpc_local_lock; 54017926a79SDavid Howells extern struct rxrpc_local *rxrpc_lookup_local(struct sockaddr_rxrpc *); 54117926a79SDavid Howells extern void rxrpc_put_local(struct rxrpc_local *); 54217926a79SDavid Howells extern void __exit rxrpc_destroy_all_locals(void); 54317926a79SDavid Howells 54417926a79SDavid Howells /* 54517926a79SDavid Howells * ar-key.c 54617926a79SDavid Howells */ 54717926a79SDavid Howells extern struct key_type key_type_rxrpc; 54817926a79SDavid Howells extern struct key_type key_type_rxrpc_s; 54917926a79SDavid Howells 55017926a79SDavid Howells extern int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); 55117926a79SDavid Howells extern int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); 55217926a79SDavid Howells extern int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, 55317926a79SDavid Howells time_t, u32); 55417926a79SDavid Howells 55517926a79SDavid Howells /* 55617926a79SDavid Howells * ar-output.c 55717926a79SDavid Howells */ 55817926a79SDavid Howells extern int rxrpc_resend_timeout; 55917926a79SDavid Howells 56017926a79SDavid Howells extern int rxrpc_send_packet(struct rxrpc_transport *, struct sk_buff *); 56117926a79SDavid Howells extern int rxrpc_client_sendmsg(struct kiocb *, struct rxrpc_sock *, 56217926a79SDavid Howells struct rxrpc_transport *, struct msghdr *, 56317926a79SDavid Howells size_t); 56417926a79SDavid Howells extern int rxrpc_server_sendmsg(struct kiocb *, struct rxrpc_sock *, 56517926a79SDavid Howells struct msghdr *, size_t); 56617926a79SDavid Howells 56717926a79SDavid Howells /* 56817926a79SDavid Howells * ar-peer.c 56917926a79SDavid Howells */ 57017926a79SDavid Howells extern struct rxrpc_peer *rxrpc_get_peer(struct sockaddr_rxrpc *, gfp_t); 57117926a79SDavid Howells extern void rxrpc_put_peer(struct rxrpc_peer *); 57217926a79SDavid Howells extern struct rxrpc_peer *rxrpc_find_peer(struct rxrpc_local *, 57317926a79SDavid Howells __be32, __be16); 57417926a79SDavid Howells extern void __exit rxrpc_destroy_all_peers(void); 57517926a79SDavid Howells 57617926a79SDavid Howells /* 57717926a79SDavid Howells * ar-proc.c 57817926a79SDavid Howells */ 57917926a79SDavid Howells extern const char *rxrpc_call_states[]; 58017926a79SDavid Howells extern struct file_operations rxrpc_call_seq_fops; 58117926a79SDavid Howells extern struct file_operations rxrpc_connection_seq_fops; 58217926a79SDavid Howells 58317926a79SDavid Howells /* 58417926a79SDavid Howells * ar-recvmsg.c 58517926a79SDavid Howells */ 58617926a79SDavid Howells extern int rxrpc_recvmsg(struct kiocb *, struct socket *, struct msghdr *, 58717926a79SDavid Howells size_t, int); 58817926a79SDavid Howells 58917926a79SDavid Howells /* 59017926a79SDavid Howells * ar-security.c 59117926a79SDavid Howells */ 59217926a79SDavid Howells extern int rxrpc_register_security(struct rxrpc_security *); 59317926a79SDavid Howells extern void rxrpc_unregister_security(struct rxrpc_security *); 59417926a79SDavid Howells extern int rxrpc_init_client_conn_security(struct rxrpc_connection *); 59517926a79SDavid Howells extern int rxrpc_init_server_conn_security(struct rxrpc_connection *); 59617926a79SDavid Howells extern int rxrpc_secure_packet(const struct rxrpc_call *, struct sk_buff *, 59717926a79SDavid Howells size_t, void *); 59817926a79SDavid Howells extern int rxrpc_verify_packet(const struct rxrpc_call *, struct sk_buff *, 59917926a79SDavid Howells u32 *); 60017926a79SDavid Howells extern void rxrpc_clear_conn_security(struct rxrpc_connection *); 60117926a79SDavid Howells 60217926a79SDavid Howells /* 60317926a79SDavid Howells * ar-skbuff.c 60417926a79SDavid Howells */ 60517926a79SDavid Howells extern void rxrpc_packet_destructor(struct sk_buff *); 60617926a79SDavid Howells 60717926a79SDavid Howells /* 60817926a79SDavid Howells * ar-transport.c 60917926a79SDavid Howells */ 61017926a79SDavid Howells extern struct rxrpc_transport *rxrpc_get_transport(struct rxrpc_local *, 61117926a79SDavid Howells struct rxrpc_peer *, 61217926a79SDavid Howells gfp_t); 61317926a79SDavid Howells extern void rxrpc_put_transport(struct rxrpc_transport *); 61417926a79SDavid Howells extern void __exit rxrpc_destroy_all_transports(void); 61517926a79SDavid Howells extern struct rxrpc_transport *rxrpc_find_transport(struct rxrpc_local *, 61617926a79SDavid Howells struct rxrpc_peer *); 61717926a79SDavid Howells 61817926a79SDavid Howells /* 61917926a79SDavid Howells * debug tracing 62017926a79SDavid Howells */ 62117926a79SDavid Howells extern unsigned rxrpc_debug; 62217926a79SDavid Howells 62317926a79SDavid Howells #define dbgprintk(FMT,...) \ 62417926a79SDavid Howells printk("[%x%-6.6s] "FMT"\n", smp_processor_id(), current->comm ,##__VA_ARGS__) 62517926a79SDavid Howells 62617926a79SDavid Howells /* make sure we maintain the format strings, even when debugging is disabled */ 62717926a79SDavid Howells static inline __attribute__((format(printf,1,2))) 62817926a79SDavid Howells void _dbprintk(const char *fmt, ...) 62917926a79SDavid Howells { 63017926a79SDavid Howells } 63117926a79SDavid Howells 63217926a79SDavid Howells #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__FUNCTION__ ,##__VA_ARGS__) 63317926a79SDavid Howells #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__FUNCTION__ ,##__VA_ARGS__) 63417926a79SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 63517926a79SDavid Howells #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) 63617926a79SDavid Howells #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) 63717926a79SDavid Howells 63817926a79SDavid Howells 63917926a79SDavid Howells #if defined(__KDEBUG) 64017926a79SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 64117926a79SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 64217926a79SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 64317926a79SDavid Howells #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) 64417926a79SDavid Howells #define _net(FMT,...) knet(FMT,##__VA_ARGS__) 64517926a79SDavid Howells 64617926a79SDavid Howells #elif defined(CONFIG_AF_RXRPC_DEBUG) 64717926a79SDavid Howells #define RXRPC_DEBUG_KENTER 0x01 64817926a79SDavid Howells #define RXRPC_DEBUG_KLEAVE 0x02 64917926a79SDavid Howells #define RXRPC_DEBUG_KDEBUG 0x04 65017926a79SDavid Howells #define RXRPC_DEBUG_KPROTO 0x08 65117926a79SDavid Howells #define RXRPC_DEBUG_KNET 0x10 65217926a79SDavid Howells 65317926a79SDavid Howells #define _enter(FMT,...) \ 65417926a79SDavid Howells do { \ 65517926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ 65617926a79SDavid Howells kenter(FMT,##__VA_ARGS__); \ 65717926a79SDavid Howells } while (0) 65817926a79SDavid Howells 65917926a79SDavid Howells #define _leave(FMT,...) \ 66017926a79SDavid Howells do { \ 66117926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ 66217926a79SDavid Howells kleave(FMT,##__VA_ARGS__); \ 66317926a79SDavid Howells } while (0) 66417926a79SDavid Howells 66517926a79SDavid Howells #define _debug(FMT,...) \ 66617926a79SDavid Howells do { \ 66717926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ 66817926a79SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 66917926a79SDavid Howells } while (0) 67017926a79SDavid Howells 67117926a79SDavid Howells #define _proto(FMT,...) \ 67217926a79SDavid Howells do { \ 67317926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ 67417926a79SDavid Howells kproto(FMT,##__VA_ARGS__); \ 67517926a79SDavid Howells } while (0) 67617926a79SDavid Howells 67717926a79SDavid Howells #define _net(FMT,...) \ 67817926a79SDavid Howells do { \ 67917926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ 68017926a79SDavid Howells knet(FMT,##__VA_ARGS__); \ 68117926a79SDavid Howells } while (0) 68217926a79SDavid Howells 68317926a79SDavid Howells #else 68417926a79SDavid Howells #define _enter(FMT,...) _dbprintk("==> %s("FMT")",__FUNCTION__ ,##__VA_ARGS__) 68517926a79SDavid Howells #define _leave(FMT,...) _dbprintk("<== %s()"FMT"",__FUNCTION__ ,##__VA_ARGS__) 68617926a79SDavid Howells #define _debug(FMT,...) _dbprintk(" "FMT ,##__VA_ARGS__) 68717926a79SDavid Howells #define _proto(FMT,...) _dbprintk("### "FMT ,##__VA_ARGS__) 68817926a79SDavid Howells #define _net(FMT,...) _dbprintk("@@@ "FMT ,##__VA_ARGS__) 68917926a79SDavid Howells #endif 69017926a79SDavid Howells 69117926a79SDavid Howells /* 69217926a79SDavid Howells * debug assertion checking 69317926a79SDavid Howells */ 69417926a79SDavid Howells #if 1 // defined(__KDEBUGALL) 69517926a79SDavid Howells 69617926a79SDavid Howells #define ASSERT(X) \ 69717926a79SDavid Howells do { \ 69817926a79SDavid Howells if (unlikely(!(X))) { \ 69917926a79SDavid Howells printk(KERN_ERR "\n"); \ 70017926a79SDavid Howells printk(KERN_ERR "RxRPC: Assertion failed\n"); \ 70117926a79SDavid Howells BUG(); \ 70217926a79SDavid Howells } \ 70317926a79SDavid Howells } while(0) 70417926a79SDavid Howells 70517926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 70617926a79SDavid Howells do { \ 70717926a79SDavid Howells if (unlikely(!((X) OP (Y)))) { \ 70817926a79SDavid Howells printk(KERN_ERR "\n"); \ 70917926a79SDavid Howells printk(KERN_ERR "RxRPC: Assertion failed\n"); \ 71017926a79SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 71117926a79SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 71217926a79SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 71317926a79SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 71417926a79SDavid Howells BUG(); \ 71517926a79SDavid Howells } \ 71617926a79SDavid Howells } while(0) 71717926a79SDavid Howells 71817926a79SDavid Howells #define ASSERTIF(C, X) \ 71917926a79SDavid Howells do { \ 72017926a79SDavid Howells if (unlikely((C) && !(X))) { \ 72117926a79SDavid Howells printk(KERN_ERR "\n"); \ 72217926a79SDavid Howells printk(KERN_ERR "RxRPC: Assertion failed\n"); \ 72317926a79SDavid Howells BUG(); \ 72417926a79SDavid Howells } \ 72517926a79SDavid Howells } while(0) 72617926a79SDavid Howells 72717926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 72817926a79SDavid Howells do { \ 72917926a79SDavid Howells if (unlikely((C) && !((X) OP (Y)))) { \ 73017926a79SDavid Howells printk(KERN_ERR "\n"); \ 73117926a79SDavid Howells printk(KERN_ERR "RxRPC: Assertion failed\n"); \ 73217926a79SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 73317926a79SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 73417926a79SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 73517926a79SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 73617926a79SDavid Howells BUG(); \ 73717926a79SDavid Howells } \ 73817926a79SDavid Howells } while(0) 73917926a79SDavid Howells 74017926a79SDavid Howells #else 74117926a79SDavid Howells 74217926a79SDavid Howells #define ASSERT(X) \ 74317926a79SDavid Howells do { \ 74417926a79SDavid Howells } while(0) 74517926a79SDavid Howells 74617926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 74717926a79SDavid Howells do { \ 74817926a79SDavid Howells } while(0) 74917926a79SDavid Howells 75017926a79SDavid Howells #define ASSERTIF(C, X) \ 75117926a79SDavid Howells do { \ 75217926a79SDavid Howells } while(0) 75317926a79SDavid Howells 75417926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 75517926a79SDavid Howells do { \ 75617926a79SDavid Howells } while(0) 75717926a79SDavid Howells 75817926a79SDavid Howells #endif /* __KDEBUGALL */ 75917926a79SDavid Howells 76017926a79SDavid Howells /* 76117926a79SDavid Howells * socket buffer accounting / leak finding 76217926a79SDavid Howells */ 76317926a79SDavid Howells static inline void __rxrpc_new_skb(struct sk_buff *skb, const char *fn) 76417926a79SDavid Howells { 76517926a79SDavid Howells //_net("new skb %p %s [%d]", skb, fn, atomic_read(&rxrpc_n_skbs)); 76617926a79SDavid Howells //atomic_inc(&rxrpc_n_skbs); 76717926a79SDavid Howells } 76817926a79SDavid Howells 76917926a79SDavid Howells #define rxrpc_new_skb(skb) __rxrpc_new_skb((skb), __func__) 77017926a79SDavid Howells 77117926a79SDavid Howells static inline void __rxrpc_kill_skb(struct sk_buff *skb, const char *fn) 77217926a79SDavid Howells { 77317926a79SDavid Howells //_net("kill skb %p %s [%d]", skb, fn, atomic_read(&rxrpc_n_skbs)); 77417926a79SDavid Howells //atomic_dec(&rxrpc_n_skbs); 77517926a79SDavid Howells } 77617926a79SDavid Howells 77717926a79SDavid Howells #define rxrpc_kill_skb(skb) __rxrpc_kill_skb((skb), __func__) 77817926a79SDavid Howells 77917926a79SDavid Howells static inline void __rxrpc_free_skb(struct sk_buff *skb, const char *fn) 78017926a79SDavid Howells { 78117926a79SDavid Howells if (skb) { 78217926a79SDavid Howells CHECK_SLAB_OKAY(&skb->users); 78317926a79SDavid Howells //_net("free skb %p %s [%d]", 78417926a79SDavid Howells // skb, fn, atomic_read(&rxrpc_n_skbs)); 78517926a79SDavid Howells //atomic_dec(&rxrpc_n_skbs); 78617926a79SDavid Howells kfree_skb(skb); 78717926a79SDavid Howells } 78817926a79SDavid Howells } 78917926a79SDavid Howells 79017926a79SDavid Howells #define rxrpc_free_skb(skb) __rxrpc_free_skb((skb), __func__) 79117926a79SDavid Howells 79217926a79SDavid Howells static inline void rxrpc_purge_queue(struct sk_buff_head *list) 79317926a79SDavid Howells { 79417926a79SDavid Howells struct sk_buff *skb; 79517926a79SDavid Howells while ((skb = skb_dequeue((list))) != NULL) 79617926a79SDavid Howells rxrpc_free_skb(skb); 79717926a79SDavid Howells } 79817926a79SDavid Howells 79917926a79SDavid Howells static inline void __rxrpc__atomic_inc(atomic_t *v) 80017926a79SDavid Howells { 80117926a79SDavid Howells CHECK_SLAB_OKAY(v); 80217926a79SDavid Howells atomic_inc(v); 80317926a79SDavid Howells } 80417926a79SDavid Howells 80517926a79SDavid Howells #define atomic_inc(v) __rxrpc__atomic_inc((v)) 80617926a79SDavid Howells 80717926a79SDavid Howells static inline void __rxrpc__atomic_dec(atomic_t *v) 80817926a79SDavid Howells { 80917926a79SDavid Howells CHECK_SLAB_OKAY(v); 81017926a79SDavid Howells atomic_dec(v); 81117926a79SDavid Howells } 81217926a79SDavid Howells 81317926a79SDavid Howells #define atomic_dec(v) __rxrpc__atomic_dec((v)) 81417926a79SDavid Howells 81517926a79SDavid Howells static inline int __rxrpc__atomic_dec_and_test(atomic_t *v) 81617926a79SDavid Howells { 81717926a79SDavid Howells CHECK_SLAB_OKAY(v); 81817926a79SDavid Howells return atomic_dec_and_test(v); 81917926a79SDavid Howells } 82017926a79SDavid Howells 82117926a79SDavid Howells #define atomic_dec_and_test(v) __rxrpc__atomic_dec_and_test((v)) 82217926a79SDavid Howells 82317926a79SDavid Howells static inline void __rxrpc_get_local(struct rxrpc_local *local, const char *f) 82417926a79SDavid Howells { 82517926a79SDavid Howells CHECK_SLAB_OKAY(&local->usage); 82617926a79SDavid Howells if (atomic_inc_return(&local->usage) == 1) 82717926a79SDavid Howells printk("resurrected (%s)\n", f); 82817926a79SDavid Howells } 82917926a79SDavid Howells 83017926a79SDavid Howells #define rxrpc_get_local(LOCAL) __rxrpc_get_local((LOCAL), __func__) 83117926a79SDavid Howells 83217926a79SDavid Howells #define rxrpc_get_call(CALL) \ 83317926a79SDavid Howells do { \ 83417926a79SDavid Howells CHECK_SLAB_OKAY(&(CALL)->usage); \ 83517926a79SDavid Howells if (atomic_inc_return(&(CALL)->usage) == 1) \ 83617926a79SDavid Howells BUG(); \ 83717926a79SDavid Howells } while(0) 83817926a79SDavid Howells 83917926a79SDavid Howells #define rxrpc_put_call(CALL) \ 84017926a79SDavid Howells do { \ 84117926a79SDavid Howells __rxrpc_put_call(CALL); \ 84217926a79SDavid Howells } while(0) 843