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 12be6e6707SDavid Howells #include <linux/atomic.h> 138496af50SDavid Howells #include <linux/seqlock.h> 14e0e4d82fSDavid Howells #include <net/sock.h> 15be6e6707SDavid Howells #include <net/af_rxrpc.h> 1617926a79SDavid Howells #include <rxrpc/packet.h> 1717926a79SDavid Howells 1817926a79SDavid Howells #if 0 1917926a79SDavid Howells #define CHECK_SLAB_OKAY(X) \ 2017926a79SDavid Howells BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \ 2117926a79SDavid Howells (POISON_FREE << 8 | POISON_FREE)) 2217926a79SDavid Howells #else 2317926a79SDavid Howells #define CHECK_SLAB_OKAY(X) do {} while (0) 2417926a79SDavid Howells #endif 2517926a79SDavid Howells 2617926a79SDavid Howells #define FCRYPT_BSIZE 8 2717926a79SDavid Howells struct rxrpc_crypt { 2817926a79SDavid Howells union { 2917926a79SDavid Howells u8 x[FCRYPT_BSIZE]; 3091e916cfSAl Viro __be32 n[2]; 3117926a79SDavid Howells }; 3217926a79SDavid Howells } __attribute__((aligned(8))); 3317926a79SDavid Howells 34651350d1SDavid Howells #define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS)) 35651350d1SDavid Howells #define rxrpc_queue_delayed_work(WS,D) \ 36651350d1SDavid Howells queue_delayed_work(rxrpc_workqueue, (WS), (D)) 37651350d1SDavid Howells 38cc8feb8eSDavid Howells struct rxrpc_connection; 39cc8feb8eSDavid Howells 4017926a79SDavid Howells /* 41d001648eSDavid Howells * Mark applied to socket buffers. 42d001648eSDavid Howells */ 43d001648eSDavid Howells enum rxrpc_skb_mark { 44d001648eSDavid Howells RXRPC_SKB_MARK_DATA, /* data message */ 45d001648eSDavid Howells RXRPC_SKB_MARK_FINAL_ACK, /* final ACK received message */ 46d001648eSDavid Howells RXRPC_SKB_MARK_BUSY, /* server busy message */ 47d001648eSDavid Howells RXRPC_SKB_MARK_REMOTE_ABORT, /* remote abort message */ 48d001648eSDavid Howells RXRPC_SKB_MARK_LOCAL_ABORT, /* local abort message */ 49d001648eSDavid Howells RXRPC_SKB_MARK_NET_ERROR, /* network error message */ 50d001648eSDavid Howells RXRPC_SKB_MARK_LOCAL_ERROR, /* local error message */ 51d001648eSDavid Howells RXRPC_SKB_MARK_NEW_CALL, /* local error message */ 52d001648eSDavid Howells }; 53d001648eSDavid Howells 54d001648eSDavid Howells /* 5517926a79SDavid Howells * sk_state for RxRPC sockets 5617926a79SDavid Howells */ 5717926a79SDavid Howells enum { 582341e077SDavid Howells RXRPC_UNBOUND = 0, 592341e077SDavid Howells RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */ 6017926a79SDavid Howells RXRPC_CLIENT_BOUND, /* client local address bound */ 6117926a79SDavid Howells RXRPC_SERVER_BOUND, /* server local address bound */ 6217926a79SDavid Howells RXRPC_SERVER_LISTENING, /* server listening for connections */ 6317926a79SDavid Howells RXRPC_CLOSE, /* socket is being closed */ 6417926a79SDavid Howells }; 6517926a79SDavid Howells 6617926a79SDavid Howells /* 6700e90712SDavid Howells * Service backlog preallocation. 6800e90712SDavid Howells * 6900e90712SDavid Howells * This contains circular buffers of preallocated peers, connections and calls 7000e90712SDavid Howells * for incoming service calls and their head and tail pointers. This allows 7100e90712SDavid Howells * calls to be set up in the data_ready handler, thereby avoiding the need to 7200e90712SDavid Howells * shuffle packets around so much. 7300e90712SDavid Howells */ 7400e90712SDavid Howells struct rxrpc_backlog { 7500e90712SDavid Howells unsigned short peer_backlog_head; 7600e90712SDavid Howells unsigned short peer_backlog_tail; 7700e90712SDavid Howells unsigned short conn_backlog_head; 7800e90712SDavid Howells unsigned short conn_backlog_tail; 7900e90712SDavid Howells unsigned short call_backlog_head; 8000e90712SDavid Howells unsigned short call_backlog_tail; 8100e90712SDavid Howells #define RXRPC_BACKLOG_MAX 32 8200e90712SDavid Howells struct rxrpc_peer *peer_backlog[RXRPC_BACKLOG_MAX]; 8300e90712SDavid Howells struct rxrpc_connection *conn_backlog[RXRPC_BACKLOG_MAX]; 8400e90712SDavid Howells struct rxrpc_call *call_backlog[RXRPC_BACKLOG_MAX]; 8500e90712SDavid Howells }; 8600e90712SDavid Howells 8700e90712SDavid Howells /* 8817926a79SDavid Howells * RxRPC socket definition 8917926a79SDavid Howells */ 9017926a79SDavid Howells struct rxrpc_sock { 9117926a79SDavid Howells /* WARNING: sk has to be the first member */ 9217926a79SDavid Howells struct sock sk; 93d001648eSDavid Howells rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */ 9400e90712SDavid Howells rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */ 9517926a79SDavid Howells struct rxrpc_local *local; /* local endpoint */ 96de8d6c74SDavid Howells struct hlist_node listen_link; /* link in the local endpoint's listen list */ 9700e90712SDavid Howells struct rxrpc_backlog *backlog; /* Preallocation for services */ 98248f219cSDavid Howells spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */ 99248f219cSDavid Howells struct list_head sock_calls; /* List of calls owned by this socket */ 100248f219cSDavid Howells struct list_head to_be_accepted; /* calls awaiting acceptance */ 101248f219cSDavid Howells struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */ 102248f219cSDavid Howells rwlock_t recvmsg_lock; /* Lock for recvmsg_q */ 10317926a79SDavid Howells struct key *key; /* security for this socket */ 10417926a79SDavid Howells struct key *securities; /* list of server security descriptors */ 10500e90712SDavid Howells struct rb_root calls; /* User ID -> call mapping */ 10617926a79SDavid Howells unsigned long flags; 1072341e077SDavid Howells #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ 10817926a79SDavid Howells rwlock_t call_lock; /* lock for calls */ 10917926a79SDavid Howells u32 min_sec_level; /* minimum security level */ 11017926a79SDavid Howells #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT 111cc8feb8eSDavid Howells bool exclusive; /* Exclusive connection for a client socket */ 112cc8feb8eSDavid Howells sa_family_t family; /* Protocol family created with */ 11317926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 1142341e077SDavid Howells struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ 11517926a79SDavid Howells }; 11617926a79SDavid Howells 11717926a79SDavid Howells #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) 11817926a79SDavid Howells 11917926a79SDavid Howells /* 1200d12f8a4SDavid Howells * CPU-byteorder normalised Rx packet header. 1210d12f8a4SDavid Howells */ 1220d12f8a4SDavid Howells struct rxrpc_host_header { 1230d12f8a4SDavid Howells u32 epoch; /* client boot timestamp */ 1240d12f8a4SDavid Howells u32 cid; /* connection and channel ID */ 1250d12f8a4SDavid Howells u32 callNumber; /* call ID (0 for connection-level packets) */ 1260d12f8a4SDavid Howells u32 seq; /* sequence number of pkt in call stream */ 1270d12f8a4SDavid Howells u32 serial; /* serial number of pkt sent to network */ 1280d12f8a4SDavid Howells u8 type; /* packet type */ 1290d12f8a4SDavid Howells u8 flags; /* packet flags */ 1300d12f8a4SDavid Howells u8 userStatus; /* app-layer defined status */ 1310d12f8a4SDavid Howells u8 securityIndex; /* security protocol ID */ 1320d12f8a4SDavid Howells union { 1330d12f8a4SDavid Howells u16 _rsvd; /* reserved */ 1340d12f8a4SDavid Howells u16 cksum; /* kerberos security checksum */ 1350d12f8a4SDavid Howells }; 1360d12f8a4SDavid Howells u16 serviceId; /* service ID */ 1370d12f8a4SDavid Howells } __packed; 1380d12f8a4SDavid Howells 1390d12f8a4SDavid Howells /* 14017926a79SDavid Howells * RxRPC socket buffer private variables 14117926a79SDavid Howells * - max 48 bytes (struct sk_buff::cb) 14217926a79SDavid Howells */ 14317926a79SDavid Howells struct rxrpc_skb_priv { 144248f219cSDavid Howells union { 14517926a79SDavid Howells unsigned long resend_at; /* time in jiffies at which to resend */ 146248f219cSDavid Howells struct { 147248f219cSDavid Howells u8 nr_jumbo; /* Number of jumbo subpackets */ 148248f219cSDavid Howells }; 149248f219cSDavid Howells }; 15017926a79SDavid Howells union { 15195c96174SEric Dumazet unsigned int offset; /* offset into buffer of next read */ 15217926a79SDavid Howells int remain; /* amount of space remaining for next write */ 15317926a79SDavid Howells u32 error; /* network error code */ 15417926a79SDavid Howells }; 15517926a79SDavid Howells 1560d12f8a4SDavid Howells struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ 15717926a79SDavid Howells }; 15817926a79SDavid Howells 15917926a79SDavid Howells #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) 16017926a79SDavid Howells 16117926a79SDavid Howells /* 16217926a79SDavid Howells * RxRPC security module interface 16317926a79SDavid Howells */ 16417926a79SDavid Howells struct rxrpc_security { 16517926a79SDavid Howells const char *name; /* name of this service */ 16617926a79SDavid Howells u8 security_index; /* security type provided */ 16717926a79SDavid Howells 168648af7fcSDavid Howells /* Initialise a security service */ 169648af7fcSDavid Howells int (*init)(void); 170648af7fcSDavid Howells 171648af7fcSDavid Howells /* Clean up a security service */ 172648af7fcSDavid Howells void (*exit)(void); 173648af7fcSDavid Howells 17417926a79SDavid Howells /* initialise a connection's security */ 17517926a79SDavid Howells int (*init_connection_security)(struct rxrpc_connection *); 17617926a79SDavid Howells 17717926a79SDavid Howells /* prime a connection's packet security */ 178a263629dSHerbert Xu int (*prime_packet_security)(struct rxrpc_connection *); 17917926a79SDavid Howells 18017926a79SDavid Howells /* impose security on a packet */ 181a263629dSHerbert Xu int (*secure_packet)(struct rxrpc_call *, 18217926a79SDavid Howells struct sk_buff *, 18317926a79SDavid Howells size_t, 18417926a79SDavid Howells void *); 18517926a79SDavid Howells 18617926a79SDavid Howells /* verify the security on a received packet */ 1875a42976dSDavid Howells int (*verify_packet)(struct rxrpc_call *, struct sk_buff *, 188248f219cSDavid Howells unsigned int, unsigned int, rxrpc_seq_t, u16); 189248f219cSDavid Howells 190248f219cSDavid Howells /* Locate the data in a received packet that has been verified. */ 191248f219cSDavid Howells void (*locate_data)(struct rxrpc_call *, struct sk_buff *, 192248f219cSDavid Howells unsigned int *, unsigned int *); 19317926a79SDavid Howells 19417926a79SDavid Howells /* issue a challenge */ 19517926a79SDavid Howells int (*issue_challenge)(struct rxrpc_connection *); 19617926a79SDavid Howells 19717926a79SDavid Howells /* respond to a challenge */ 19817926a79SDavid Howells int (*respond_to_challenge)(struct rxrpc_connection *, 19917926a79SDavid Howells struct sk_buff *, 20017926a79SDavid Howells u32 *); 20117926a79SDavid Howells 20217926a79SDavid Howells /* verify a response */ 20317926a79SDavid Howells int (*verify_response)(struct rxrpc_connection *, 20417926a79SDavid Howells struct sk_buff *, 20517926a79SDavid Howells u32 *); 20617926a79SDavid Howells 20717926a79SDavid Howells /* clear connection security */ 20817926a79SDavid Howells void (*clear)(struct rxrpc_connection *); 20917926a79SDavid Howells }; 21017926a79SDavid Howells 21117926a79SDavid Howells /* 2124f95dd78SDavid Howells * RxRPC local transport endpoint description 2134f95dd78SDavid Howells * - owned by a single AF_RXRPC socket 2144f95dd78SDavid Howells * - pointed to by transport socket struct sk_user_data 21517926a79SDavid Howells */ 21617926a79SDavid Howells struct rxrpc_local { 2174f95dd78SDavid Howells struct rcu_head rcu; 2184f95dd78SDavid Howells atomic_t usage; 2194f95dd78SDavid Howells struct list_head link; 22017926a79SDavid Howells struct socket *socket; /* my UDP socket */ 2214f95dd78SDavid Howells struct work_struct processor; 222de8d6c74SDavid Howells struct hlist_head services; /* services listening on this endpoint */ 22317926a79SDavid Howells struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ 22417926a79SDavid Howells struct sk_buff_head reject_queue; /* packets awaiting rejection */ 22544ba0698SDavid Howells struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */ 226999b69f8SDavid Howells struct rb_root client_conns; /* Client connections by socket params */ 227999b69f8SDavid Howells spinlock_t client_conns_lock; /* Lock for client_conns */ 22817926a79SDavid Howells spinlock_t lock; /* access lock */ 22917926a79SDavid Howells rwlock_t services_lock; /* lock for services list */ 23017926a79SDavid Howells int debug_id; /* debug ID for printks */ 2314f95dd78SDavid Howells bool dead; 23217926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 23317926a79SDavid Howells }; 23417926a79SDavid Howells 23517926a79SDavid Howells /* 23617926a79SDavid Howells * RxRPC remote transport endpoint definition 237be6e6707SDavid Howells * - matched by local endpoint, remote port, address and protocol type 23817926a79SDavid Howells */ 23917926a79SDavid Howells struct rxrpc_peer { 240be6e6707SDavid Howells struct rcu_head rcu; /* This must be first */ 241be6e6707SDavid Howells atomic_t usage; 242be6e6707SDavid Howells unsigned long hash_key; 243be6e6707SDavid Howells struct hlist_node hash_link; 244be6e6707SDavid Howells struct rxrpc_local *local; 245f66d7490SDavid Howells struct hlist_head error_targets; /* targets for net error distribution */ 246f66d7490SDavid Howells struct work_struct error_distributor; 247aa390bbeSDavid Howells struct rb_root service_conns; /* Service connections */ 2488496af50SDavid Howells seqlock_t service_conn_lock; 24917926a79SDavid Howells spinlock_t lock; /* access lock */ 25095c96174SEric Dumazet unsigned int if_mtu; /* interface MTU for this peer */ 25195c96174SEric Dumazet unsigned int mtu; /* network MTU for this peer */ 25295c96174SEric Dumazet unsigned int maxdata; /* data size (MTU - hdrsize) */ 25317926a79SDavid Howells unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ 25417926a79SDavid Howells int debug_id; /* debug ID for printks */ 255f66d7490SDavid Howells int error_report; /* Net (+0) or local (+1000000) to distribute */ 256f66d7490SDavid Howells #define RXRPC_LOCAL_ERROR_OFFSET 1000000 25717926a79SDavid Howells struct sockaddr_rxrpc srx; /* remote address */ 25817926a79SDavid Howells 25917926a79SDavid Howells /* calculated RTT cache */ 26017926a79SDavid Howells #define RXRPC_RTT_CACHE_SIZE 32 26117926a79SDavid Howells suseconds_t rtt; /* current RTT estimate (in uS) */ 26295c96174SEric Dumazet unsigned int rtt_point; /* next entry at which to insert */ 26395c96174SEric Dumazet unsigned int rtt_usage; /* amount of cache actually used */ 26417926a79SDavid Howells suseconds_t rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* calculated RTT cache */ 26517926a79SDavid Howells }; 26617926a79SDavid Howells 26717926a79SDavid Howells /* 26819ffa01cSDavid Howells * Keys for matching a connection. 26919ffa01cSDavid Howells */ 27019ffa01cSDavid Howells struct rxrpc_conn_proto { 271e8d70ce1SDavid Howells union { 272e8d70ce1SDavid Howells struct { 27319ffa01cSDavid Howells u32 epoch; /* epoch of this connection */ 27419ffa01cSDavid Howells u32 cid; /* connection ID */ 275e8d70ce1SDavid Howells }; 276e8d70ce1SDavid Howells u64 index_key; 27719ffa01cSDavid Howells }; 27819ffa01cSDavid Howells }; 27919ffa01cSDavid Howells 28019ffa01cSDavid Howells struct rxrpc_conn_parameters { 28119ffa01cSDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 28219ffa01cSDavid Howells struct rxrpc_peer *peer; /* Remote endpoint */ 28319ffa01cSDavid Howells struct key *key; /* Security details */ 28419ffa01cSDavid Howells bool exclusive; /* T if conn is exclusive */ 28519ffa01cSDavid Howells u16 service_id; /* Service ID for this connection */ 28619ffa01cSDavid Howells u32 security_level; /* Security level selected */ 28719ffa01cSDavid Howells }; 28819ffa01cSDavid Howells 28919ffa01cSDavid Howells /* 290bba304dbSDavid Howells * Bits in the connection flags. 291bba304dbSDavid Howells */ 292bba304dbSDavid Howells enum rxrpc_conn_flag { 293bba304dbSDavid Howells RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ 294001c1122SDavid Howells RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ 295001c1122SDavid Howells RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */ 29645025bceSDavid Howells RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */ 29745025bceSDavid Howells RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ 29845025bceSDavid Howells RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */ 299bba304dbSDavid Howells }; 300bba304dbSDavid Howells 301bba304dbSDavid Howells /* 302bba304dbSDavid Howells * Events that can be raised upon a connection. 303bba304dbSDavid Howells */ 304bba304dbSDavid Howells enum rxrpc_conn_event { 305bba304dbSDavid Howells RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ 306bba304dbSDavid Howells }; 307bba304dbSDavid Howells 308bba304dbSDavid Howells /* 30945025bceSDavid Howells * The connection cache state. 31045025bceSDavid Howells */ 31145025bceSDavid Howells enum rxrpc_conn_cache_state { 31245025bceSDavid Howells RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */ 31345025bceSDavid Howells RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */ 31445025bceSDavid Howells RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */ 31545025bceSDavid Howells RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */ 31645025bceSDavid Howells RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */ 317363deeabSDavid Howells RXRPC_CONN__NR_CACHE_STATES 31845025bceSDavid Howells }; 31945025bceSDavid Howells 32045025bceSDavid Howells /* 321bba304dbSDavid Howells * The connection protocol state. 322bba304dbSDavid Howells */ 323bba304dbSDavid Howells enum rxrpc_conn_proto_state { 324bba304dbSDavid Howells RXRPC_CONN_UNUSED, /* Connection not yet attempted */ 325bba304dbSDavid Howells RXRPC_CONN_CLIENT, /* Client connection */ 32600e90712SDavid Howells RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ 327bba304dbSDavid Howells RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ 328bba304dbSDavid Howells RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ 329bba304dbSDavid Howells RXRPC_CONN_SERVICE, /* Service secured connection */ 330bba304dbSDavid Howells RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */ 331bba304dbSDavid Howells RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */ 332bba304dbSDavid Howells RXRPC_CONN__NR_STATES 333bba304dbSDavid Howells }; 334bba304dbSDavid Howells 335bba304dbSDavid Howells /* 33617926a79SDavid Howells * RxRPC connection definition 337aa390bbeSDavid Howells * - matched by { local, peer, epoch, conn_id, direction } 33817926a79SDavid Howells * - each connection can only handle four simultaneous calls 33917926a79SDavid Howells */ 34017926a79SDavid Howells struct rxrpc_connection { 34119ffa01cSDavid Howells struct rxrpc_conn_proto proto; 34219ffa01cSDavid Howells struct rxrpc_conn_parameters params; 34319ffa01cSDavid Howells 34445025bceSDavid Howells atomic_t usage; 34545025bceSDavid Howells struct rcu_head rcu; 34645025bceSDavid Howells struct list_head cache_link; 347a1399f8bSDavid Howells 34845025bceSDavid Howells spinlock_t channel_lock; 34945025bceSDavid Howells unsigned char active_chans; /* Mask of active channels */ 35045025bceSDavid Howells #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1) 35145025bceSDavid Howells struct list_head waiting_calls; /* Calls waiting for channels */ 352a1399f8bSDavid Howells struct rxrpc_channel { 353a1399f8bSDavid Howells struct rxrpc_call __rcu *call; /* Active call */ 354a1399f8bSDavid Howells u32 call_id; /* ID of current call */ 355a1399f8bSDavid Howells u32 call_counter; /* Call ID counter */ 356a1399f8bSDavid Howells u32 last_call; /* ID of last call */ 35718bfeba5SDavid Howells u8 last_type; /* Type of last packet */ 35818bfeba5SDavid Howells u16 last_service_id; 35918bfeba5SDavid Howells union { 36018bfeba5SDavid Howells u32 last_seq; 36118bfeba5SDavid Howells u32 last_abort; 36218bfeba5SDavid Howells }; 363a1399f8bSDavid Howells } channels[RXRPC_MAXCALLS]; 364999b69f8SDavid Howells 36517926a79SDavid Howells struct work_struct processor; /* connection event processor */ 366999b69f8SDavid Howells union { 367999b69f8SDavid Howells struct rb_node client_node; /* Node in local->client_conns */ 368aa390bbeSDavid Howells struct rb_node service_node; /* Node in peer->service_conns */ 369999b69f8SDavid Howells }; 3704d028b2cSDavid Howells struct list_head proc_link; /* link in procfs list */ 37117926a79SDavid Howells struct list_head link; /* link in master connection list */ 37217926a79SDavid Howells struct sk_buff_head rx_queue; /* received conn-level packets */ 373648af7fcSDavid Howells const struct rxrpc_security *security; /* applied security module */ 37417926a79SDavid Howells struct key *server_key; /* security for this service */ 3751afe593bSHerbert Xu struct crypto_skcipher *cipher; /* encryption handle */ 37617926a79SDavid Howells struct rxrpc_crypt csum_iv; /* packet checksum base */ 3774a3388c8SDavid Howells unsigned long flags; 37817926a79SDavid Howells unsigned long events; 379f51b4480SDavid Howells unsigned long idle_timestamp; /* Time at which last became idle */ 38017926a79SDavid Howells spinlock_t state_lock; /* state-change lock */ 381cf13258fSDavid Howells enum rxrpc_conn_cache_state cache_state; 382cf13258fSDavid Howells enum rxrpc_conn_proto_state state; /* current state of connection */ 383dc44b3a0SDavid Howells u32 local_abort; /* local abort code */ 384dc44b3a0SDavid Howells u32 remote_abort; /* remote abort code */ 38517926a79SDavid Howells int debug_id; /* debug ID for printks */ 38617926a79SDavid Howells atomic_t serial; /* packet serial number counter */ 387563ea7d5SDavid Howells unsigned int hi_serial; /* highest serial number received */ 38817926a79SDavid Howells u8 size_align; /* data size alignment (for security) */ 38917926a79SDavid Howells u8 header_size; /* rxrpc + security header size */ 39017926a79SDavid Howells u8 security_size; /* security header size */ 39117926a79SDavid Howells u32 security_nonce; /* response re-use preventer */ 39217926a79SDavid Howells u8 security_ix; /* security type */ 39317926a79SDavid Howells u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ 39417926a79SDavid Howells }; 39517926a79SDavid Howells 39617926a79SDavid Howells /* 3975b8848d1SDavid Howells * Flags in call->flags. 3985b8848d1SDavid Howells */ 3995b8848d1SDavid Howells enum rxrpc_call_flag { 4005b8848d1SDavid Howells RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ 4015b8848d1SDavid Howells RXRPC_CALL_HAS_USERID, /* has a user ID attached */ 402dabe5a79SDavid Howells RXRPC_CALL_IS_SERVICE, /* Call is service call */ 40345025bceSDavid Howells RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ 404248f219cSDavid Howells RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ 405248f219cSDavid Howells RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ 4065b8848d1SDavid Howells }; 4075b8848d1SDavid Howells 4085b8848d1SDavid Howells /* 4095b8848d1SDavid Howells * Events that can be raised on a call. 4105b8848d1SDavid Howells */ 4115b8848d1SDavid Howells enum rxrpc_call_event { 4124c198ad1SDavid Howells RXRPC_CALL_EV_ACK, /* need to generate ACK */ 4134c198ad1SDavid Howells RXRPC_CALL_EV_ABORT, /* need to generate abort */ 414248f219cSDavid Howells RXRPC_CALL_EV_TIMER, /* Timer expired */ 4154c198ad1SDavid Howells RXRPC_CALL_EV_RESEND, /* Tx resend required */ 4165b8848d1SDavid Howells }; 4175b8848d1SDavid Howells 4185b8848d1SDavid Howells /* 4195b8848d1SDavid Howells * The states that a call can be in. 4205b8848d1SDavid Howells */ 4215b8848d1SDavid Howells enum rxrpc_call_state { 422999b69f8SDavid Howells RXRPC_CALL_UNINITIALISED, 423999b69f8SDavid Howells RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ 4245b8848d1SDavid Howells RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ 4255b8848d1SDavid Howells RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ 4265b8848d1SDavid Howells RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ 42700e90712SDavid Howells RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ 4285b8848d1SDavid Howells RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ 4295b8848d1SDavid Howells RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ 4305b8848d1SDavid Howells RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ 4315b8848d1SDavid Howells RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ 4325b8848d1SDavid Howells RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ 4335b8848d1SDavid Howells RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ 434f5c17aaeSDavid Howells RXRPC_CALL_COMPLETE, /* - call complete */ 435f5c17aaeSDavid Howells NR__RXRPC_CALL_STATES 436f5c17aaeSDavid Howells }; 437f5c17aaeSDavid Howells 438f5c17aaeSDavid Howells /* 439f5c17aaeSDavid Howells * Call completion condition (state == RXRPC_CALL_COMPLETE). 440f5c17aaeSDavid Howells */ 441f5c17aaeSDavid Howells enum rxrpc_call_completion { 442f5c17aaeSDavid Howells RXRPC_CALL_SUCCEEDED, /* - Normal termination */ 4435b8848d1SDavid Howells RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ 4445b8848d1SDavid Howells RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ 445f5c17aaeSDavid Howells RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */ 4465b8848d1SDavid Howells RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ 447f5c17aaeSDavid Howells NR__RXRPC_CALL_COMPLETIONS 4485b8848d1SDavid Howells }; 4495b8848d1SDavid Howells 4505b8848d1SDavid Howells /* 45117926a79SDavid Howells * RxRPC call definition 45217926a79SDavid Howells * - matched by { connection, call_id } 45317926a79SDavid Howells */ 45417926a79SDavid Howells struct rxrpc_call { 455dee46364SDavid Howells struct rcu_head rcu; 45617926a79SDavid Howells struct rxrpc_connection *conn; /* connection carrying call */ 457df5d8bf7SDavid Howells struct rxrpc_peer *peer; /* Peer record for remote address */ 4588d94aa38SDavid Howells struct rxrpc_sock __rcu *socket; /* socket responsible */ 459248f219cSDavid Howells unsigned long ack_at; /* When deferred ACK needs to happen */ 460248f219cSDavid Howells unsigned long resend_at; /* When next resend needs to happen */ 461248f219cSDavid Howells unsigned long expire_at; /* When the call times out */ 462248f219cSDavid Howells struct timer_list timer; /* Combined event timer */ 463248f219cSDavid Howells struct work_struct processor; /* Event processor */ 464d001648eSDavid Howells rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ 46517926a79SDavid Howells struct list_head link; /* link in master call list */ 46645025bceSDavid Howells struct list_head chan_wait_link; /* Link in conn->waiting_calls */ 467f66d7490SDavid Howells struct hlist_node error_link; /* link in error distribution list */ 468248f219cSDavid Howells struct list_head accept_link; /* Link in rx->acceptq */ 469248f219cSDavid Howells struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ 470248f219cSDavid Howells struct list_head sock_link; /* Link in rx->sock_calls */ 471248f219cSDavid Howells struct rb_node sock_node; /* Node in rx->calls */ 47217926a79SDavid Howells struct sk_buff *tx_pending; /* Tx socket buffer being filled */ 47345025bceSDavid Howells wait_queue_head_t waitq; /* Wait queue for channel or Tx */ 474a263629dSHerbert Xu __be32 crypto_buf[2]; /* Temporary packet crypto buffer */ 47517926a79SDavid Howells unsigned long user_call_ID; /* user-defined call ID */ 47617926a79SDavid Howells unsigned long flags; 47717926a79SDavid Howells unsigned long events; 47817926a79SDavid Howells spinlock_t lock; 47917926a79SDavid Howells rwlock_t state_lock; /* lock for state transition */ 480f5c17aaeSDavid Howells u32 abort_code; /* Local/remote abort code */ 481f5c17aaeSDavid Howells int error; /* Local error incurred */ 482cf13258fSDavid Howells enum rxrpc_call_state state; /* current state of call */ 483cf13258fSDavid Howells enum rxrpc_call_completion completion; /* Call completion condition */ 48417926a79SDavid Howells atomic_t usage; 485dabe5a79SDavid Howells u16 service_id; /* service ID */ 486278ac0cdSDavid Howells u8 security_ix; /* Security type */ 487dabe5a79SDavid Howells u32 call_id; /* call ID on connection */ 488dabe5a79SDavid Howells u32 cid; /* connection ID plus channel index */ 489dabe5a79SDavid Howells int debug_id; /* debug ID for printks */ 49017926a79SDavid Howells 491248f219cSDavid Howells /* Rx/Tx circular buffer, depending on phase. 492248f219cSDavid Howells * 493248f219cSDavid Howells * In the Rx phase, packets are annotated with 0 or the number of the 494248f219cSDavid Howells * segment of a jumbo packet each buffer refers to. There can be up to 495248f219cSDavid Howells * 47 segments in a maximum-size UDP packet. 496248f219cSDavid Howells * 497248f219cSDavid Howells * In the Tx phase, packets are annotated with which buffers have been 498248f219cSDavid Howells * acked. 49917926a79SDavid Howells */ 500248f219cSDavid Howells #define RXRPC_RXTX_BUFF_SIZE 64 501248f219cSDavid Howells #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1) 50275e42126SDavid Howells #define RXRPC_INIT_RX_WINDOW_SIZE 32 503248f219cSDavid Howells struct sk_buff **rxtx_buffer; 504248f219cSDavid Howells u8 *rxtx_annotations; 505248f219cSDavid Howells #define RXRPC_TX_ANNO_ACK 0 506248f219cSDavid Howells #define RXRPC_TX_ANNO_UNACK 1 507248f219cSDavid Howells #define RXRPC_TX_ANNO_NAK 2 508248f219cSDavid Howells #define RXRPC_TX_ANNO_RETRANS 3 509248f219cSDavid Howells #define RXRPC_RX_ANNO_JUMBO 0x3f /* Jumbo subpacket number + 1 if not zero */ 510248f219cSDavid Howells #define RXRPC_RX_ANNO_JLAST 0x40 /* Set if last element of a jumbo packet */ 511248f219cSDavid Howells #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ 512248f219cSDavid Howells rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but 513248f219cSDavid Howells * not hard-ACK'd packet follows this. 514248f219cSDavid Howells */ 515248f219cSDavid Howells rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ 516248f219cSDavid Howells rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not 517248f219cSDavid Howells * consumed packet follows this. 518248f219cSDavid Howells */ 519248f219cSDavid Howells rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */ 520248f219cSDavid Howells rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */ 521248f219cSDavid Howells u8 rx_winsize; /* Size of Rx window */ 522248f219cSDavid Howells u8 tx_winsize; /* Maximum size of Tx window */ 52371f3ca40SDavid Howells bool tx_phase; /* T if transmission phase, F if receive phase */ 52475e42126SDavid Howells u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */ 52517926a79SDavid Howells 52617926a79SDavid Howells /* receive-phase ACK management */ 5274e36a95eSDavid Howells u8 ackr_reason; /* reason to ACK */ 528563ea7d5SDavid Howells u16 ackr_skew; /* skew on packet being ACK'd */ 5290d12f8a4SDavid Howells rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ 530248f219cSDavid Howells rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ 531248f219cSDavid Howells unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ 532248f219cSDavid Howells unsigned short rx_pkt_len; /* Current recvmsg packet len */ 53317926a79SDavid Howells 534248f219cSDavid Howells /* transmission-phase ACK management */ 535248f219cSDavid Howells rxrpc_serial_t acks_latest; /* serial number of latest ACK received */ 53617926a79SDavid Howells }; 53717926a79SDavid Howells 53871f3ca40SDavid Howells enum rxrpc_skb_trace { 53971f3ca40SDavid Howells rxrpc_skb_rx_cleaned, 54071f3ca40SDavid Howells rxrpc_skb_rx_freed, 54171f3ca40SDavid Howells rxrpc_skb_rx_got, 54271f3ca40SDavid Howells rxrpc_skb_rx_lost, 54371f3ca40SDavid Howells rxrpc_skb_rx_received, 54471f3ca40SDavid Howells rxrpc_skb_rx_rotated, 54571f3ca40SDavid Howells rxrpc_skb_rx_purged, 54671f3ca40SDavid Howells rxrpc_skb_rx_seen, 54771f3ca40SDavid Howells rxrpc_skb_tx_cleaned, 54871f3ca40SDavid Howells rxrpc_skb_tx_freed, 54971f3ca40SDavid Howells rxrpc_skb_tx_got, 55071f3ca40SDavid Howells rxrpc_skb_tx_lost, 55171f3ca40SDavid Howells rxrpc_skb_tx_new, 55271f3ca40SDavid Howells rxrpc_skb_tx_rotated, 55371f3ca40SDavid Howells rxrpc_skb_tx_seen, 55471f3ca40SDavid Howells rxrpc_skb__nr_trace 55571f3ca40SDavid Howells }; 55671f3ca40SDavid Howells 55771f3ca40SDavid Howells extern const char rxrpc_skb_traces[rxrpc_skb__nr_trace][7]; 55871f3ca40SDavid Howells 559363deeabSDavid Howells enum rxrpc_conn_trace { 560363deeabSDavid Howells rxrpc_conn_new_client, 561363deeabSDavid Howells rxrpc_conn_new_service, 562363deeabSDavid Howells rxrpc_conn_queued, 563363deeabSDavid Howells rxrpc_conn_seen, 564363deeabSDavid Howells rxrpc_conn_got, 565363deeabSDavid Howells rxrpc_conn_put_client, 566363deeabSDavid Howells rxrpc_conn_put_service, 567363deeabSDavid Howells rxrpc_conn__nr_trace 568363deeabSDavid Howells }; 569363deeabSDavid Howells 570363deeabSDavid Howells extern const char rxrpc_conn_traces[rxrpc_conn__nr_trace][4]; 571363deeabSDavid Howells 572363deeabSDavid Howells enum rxrpc_client_trace { 573363deeabSDavid Howells rxrpc_client_activate_chans, 574363deeabSDavid Howells rxrpc_client_alloc, 575363deeabSDavid Howells rxrpc_client_chan_activate, 576363deeabSDavid Howells rxrpc_client_chan_disconnect, 577363deeabSDavid Howells rxrpc_client_chan_pass, 578363deeabSDavid Howells rxrpc_client_chan_unstarted, 579363deeabSDavid Howells rxrpc_client_cleanup, 580363deeabSDavid Howells rxrpc_client_count, 581363deeabSDavid Howells rxrpc_client_discard, 582363deeabSDavid Howells rxrpc_client_duplicate, 583363deeabSDavid Howells rxrpc_client_exposed, 584363deeabSDavid Howells rxrpc_client_replace, 585363deeabSDavid Howells rxrpc_client_to_active, 586363deeabSDavid Howells rxrpc_client_to_culled, 587363deeabSDavid Howells rxrpc_client_to_idle, 588363deeabSDavid Howells rxrpc_client_to_inactive, 589363deeabSDavid Howells rxrpc_client_to_waiting, 590363deeabSDavid Howells rxrpc_client_uncount, 591363deeabSDavid Howells rxrpc_client__nr_trace 592363deeabSDavid Howells }; 593363deeabSDavid Howells 594363deeabSDavid Howells extern const char rxrpc_client_traces[rxrpc_client__nr_trace][7]; 595363deeabSDavid Howells extern const char rxrpc_conn_cache_states[RXRPC_CONN__NR_CACHE_STATES][5]; 596363deeabSDavid Howells 597fff72429SDavid Howells enum rxrpc_call_trace { 598fff72429SDavid Howells rxrpc_call_new_client, 599fff72429SDavid Howells rxrpc_call_new_service, 600fff72429SDavid Howells rxrpc_call_queued, 601fff72429SDavid Howells rxrpc_call_queued_ref, 602fff72429SDavid Howells rxrpc_call_seen, 603a84a46d7SDavid Howells rxrpc_call_connected, 604a84a46d7SDavid Howells rxrpc_call_release, 605fff72429SDavid Howells rxrpc_call_got, 606fff72429SDavid Howells rxrpc_call_got_userid, 607cbd00891SDavid Howells rxrpc_call_got_kernel, 608fff72429SDavid Howells rxrpc_call_put, 609fff72429SDavid Howells rxrpc_call_put_userid, 610cbd00891SDavid Howells rxrpc_call_put_kernel, 611fff72429SDavid Howells rxrpc_call_put_noqueue, 612a84a46d7SDavid Howells rxrpc_call_error, 613fff72429SDavid Howells rxrpc_call__nr_trace 614fff72429SDavid Howells }; 615fff72429SDavid Howells 616fff72429SDavid Howells extern const char rxrpc_call_traces[rxrpc_call__nr_trace][4]; 617fff72429SDavid Howells 618a124fe3eSDavid Howells enum rxrpc_transmit_trace { 619a124fe3eSDavid Howells rxrpc_transmit_wait, 620a124fe3eSDavid Howells rxrpc_transmit_queue, 621a124fe3eSDavid Howells rxrpc_transmit_queue_reqack, 622a124fe3eSDavid Howells rxrpc_transmit_queue_last, 623a124fe3eSDavid Howells rxrpc_transmit_rotate, 624a124fe3eSDavid Howells rxrpc_transmit_end, 625a124fe3eSDavid Howells rxrpc_transmit__nr_trace 626a124fe3eSDavid Howells }; 627a124fe3eSDavid Howells 628a124fe3eSDavid Howells extern const char rxrpc_transmit_traces[rxrpc_transmit__nr_trace][4]; 629a124fe3eSDavid Howells 63058dc63c9SDavid Howells enum rxrpc_receive_trace { 63158dc63c9SDavid Howells rxrpc_receive_incoming, 63258dc63c9SDavid Howells rxrpc_receive_queue, 63358dc63c9SDavid Howells rxrpc_receive_queue_last, 63458dc63c9SDavid Howells rxrpc_receive_front, 63558dc63c9SDavid Howells rxrpc_receive_rotate, 63658dc63c9SDavid Howells rxrpc_receive_end, 63758dc63c9SDavid Howells rxrpc_receive__nr_trace 63858dc63c9SDavid Howells }; 63958dc63c9SDavid Howells 64058dc63c9SDavid Howells extern const char rxrpc_receive_traces[rxrpc_receive__nr_trace][4]; 64158dc63c9SDavid Howells 64284997905SDavid Howells enum rxrpc_recvmsg_trace { 64384997905SDavid Howells rxrpc_recvmsg_enter, 64484997905SDavid Howells rxrpc_recvmsg_wait, 64584997905SDavid Howells rxrpc_recvmsg_dequeue, 64684997905SDavid Howells rxrpc_recvmsg_hole, 64784997905SDavid Howells rxrpc_recvmsg_next, 64884997905SDavid Howells rxrpc_recvmsg_cont, 64984997905SDavid Howells rxrpc_recvmsg_full, 65084997905SDavid Howells rxrpc_recvmsg_data_return, 65184997905SDavid Howells rxrpc_recvmsg_terminal, 65284997905SDavid Howells rxrpc_recvmsg_to_be_accepted, 65384997905SDavid Howells rxrpc_recvmsg_return, 65484997905SDavid Howells rxrpc_recvmsg__nr_trace 65584997905SDavid Howells }; 65684997905SDavid Howells 65784997905SDavid Howells extern const char rxrpc_recvmsg_traces[rxrpc_recvmsg__nr_trace][5]; 65884997905SDavid Howells 659a3868bfcSDavid Howells extern const char *const rxrpc_pkts[]; 660a3868bfcSDavid Howells extern const char *rxrpc_acks(u8 reason); 661a3868bfcSDavid Howells 662df844fd4SDavid Howells #include <trace/events/rxrpc.h> 663df844fd4SDavid Howells 66417926a79SDavid Howells /* 665651350d1SDavid Howells * af_rxrpc.c 66617926a79SDavid Howells */ 66771f3ca40SDavid Howells extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs; 6680d12f8a4SDavid Howells extern u32 rxrpc_epoch; 669651350d1SDavid Howells extern atomic_t rxrpc_debug_id; 670651350d1SDavid Howells extern struct workqueue_struct *rxrpc_workqueue; 67117926a79SDavid Howells 67217926a79SDavid Howells /* 6730d81a51aSDavid Howells * call_accept.c 67417926a79SDavid Howells */ 67500e90712SDavid Howells int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); 67600e90712SDavid Howells void rxrpc_discard_prealloc(struct rxrpc_sock *); 677248f219cSDavid Howells struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *, 678248f219cSDavid Howells struct rxrpc_connection *, 679248f219cSDavid Howells struct sk_buff *); 6804f95dd78SDavid Howells void rxrpc_accept_incoming_calls(struct rxrpc_local *); 681d001648eSDavid Howells struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long, 682d001648eSDavid Howells rxrpc_notify_rx_t); 683c1b1203dSJoe Perches int rxrpc_reject_call(struct rxrpc_sock *); 68417926a79SDavid Howells 68517926a79SDavid Howells /* 6860d81a51aSDavid Howells * call_event.c 68717926a79SDavid Howells */ 688248f219cSDavid Howells void rxrpc_propose_ACK(struct rxrpc_call *, u8, u16, u32, bool, bool); 689c1b1203dSJoe Perches void rxrpc_process_call(struct work_struct *); 69017926a79SDavid Howells 69117926a79SDavid Howells /* 6920d81a51aSDavid Howells * call_object.c 69317926a79SDavid Howells */ 694f5c17aaeSDavid Howells extern const char *const rxrpc_call_states[]; 695f5c17aaeSDavid Howells extern const char *const rxrpc_call_completions[]; 696dad8aff7SDavid Howells extern unsigned int rxrpc_max_call_lifetime; 69717926a79SDavid Howells extern struct kmem_cache *rxrpc_call_jar; 69817926a79SDavid Howells extern struct list_head rxrpc_calls; 69917926a79SDavid Howells extern rwlock_t rxrpc_call_lock; 70017926a79SDavid Howells 7012341e077SDavid Howells struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); 70200e90712SDavid Howells struct rxrpc_call *rxrpc_alloc_call(gfp_t); 7032341e077SDavid Howells struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, 70419ffa01cSDavid Howells struct rxrpc_conn_parameters *, 705999b69f8SDavid Howells struct sockaddr_rxrpc *, 7062341e077SDavid Howells unsigned long, gfp_t); 707248f219cSDavid Howells void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, 70842886ffeSDavid Howells struct sk_buff *); 7098d94aa38SDavid Howells void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); 710c1b1203dSJoe Perches void rxrpc_release_calls_on_socket(struct rxrpc_sock *); 7118d94aa38SDavid Howells bool __rxrpc_queue_call(struct rxrpc_call *); 7128d94aa38SDavid Howells bool rxrpc_queue_call(struct rxrpc_call *); 713e34d4234SDavid Howells void rxrpc_see_call(struct rxrpc_call *); 714fff72429SDavid Howells void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 715fff72429SDavid Howells void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); 71600e90712SDavid Howells void rxrpc_cleanup_call(struct rxrpc_call *); 717c1b1203dSJoe Perches void __exit rxrpc_destroy_all_calls(void); 71817926a79SDavid Howells 719dabe5a79SDavid Howells static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) 720dabe5a79SDavid Howells { 721dabe5a79SDavid Howells return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); 722dabe5a79SDavid Howells } 723dabe5a79SDavid Howells 724dabe5a79SDavid Howells static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) 725dabe5a79SDavid Howells { 726dabe5a79SDavid Howells return !rxrpc_is_service_call(call); 727dabe5a79SDavid Howells } 728dabe5a79SDavid Howells 72917926a79SDavid Howells /* 730f5c17aaeSDavid Howells * Transition a call to the complete state. 731f5c17aaeSDavid Howells */ 732f5c17aaeSDavid Howells static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call, 733f5c17aaeSDavid Howells enum rxrpc_call_completion compl, 734f5c17aaeSDavid Howells u32 abort_code, 735f5c17aaeSDavid Howells int error) 736f5c17aaeSDavid Howells { 737f5c17aaeSDavid Howells if (call->state < RXRPC_CALL_COMPLETE) { 738f5c17aaeSDavid Howells call->abort_code = abort_code; 739f5c17aaeSDavid Howells call->error = error; 740f5c17aaeSDavid Howells call->completion = compl, 741f5c17aaeSDavid Howells call->state = RXRPC_CALL_COMPLETE; 742f5c17aaeSDavid Howells return true; 743f5c17aaeSDavid Howells } 744f5c17aaeSDavid Howells return false; 745f5c17aaeSDavid Howells } 746f5c17aaeSDavid Howells 747f5c17aaeSDavid Howells static inline bool rxrpc_set_call_completion(struct rxrpc_call *call, 748f5c17aaeSDavid Howells enum rxrpc_call_completion compl, 749f5c17aaeSDavid Howells u32 abort_code, 750f5c17aaeSDavid Howells int error) 751f5c17aaeSDavid Howells { 752e8d6bbb0SDavid Howells bool ret; 753f5c17aaeSDavid Howells 754f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 755f5c17aaeSDavid Howells ret = __rxrpc_set_call_completion(call, compl, abort_code, error); 756f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 757f5c17aaeSDavid Howells return ret; 758f5c17aaeSDavid Howells } 759f5c17aaeSDavid Howells 760f5c17aaeSDavid Howells /* 761f5c17aaeSDavid Howells * Record that a call successfully completed. 762f5c17aaeSDavid Howells */ 763e8d6bbb0SDavid Howells static inline bool __rxrpc_call_completed(struct rxrpc_call *call) 764f5c17aaeSDavid Howells { 765e8d6bbb0SDavid Howells return __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0); 766f5c17aaeSDavid Howells } 767f5c17aaeSDavid Howells 768e8d6bbb0SDavid Howells static inline bool rxrpc_call_completed(struct rxrpc_call *call) 769f5c17aaeSDavid Howells { 770e8d6bbb0SDavid Howells bool ret; 771e8d6bbb0SDavid Howells 772f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 773e8d6bbb0SDavid Howells ret = __rxrpc_call_completed(call); 774f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 775e8d6bbb0SDavid Howells return ret; 776f5c17aaeSDavid Howells } 777f5c17aaeSDavid Howells 778f5c17aaeSDavid Howells /* 779f5c17aaeSDavid Howells * Record that a call is locally aborted. 780f5c17aaeSDavid Howells */ 7815a42976dSDavid Howells static inline bool __rxrpc_abort_call(const char *why, struct rxrpc_call *call, 7825a42976dSDavid Howells rxrpc_seq_t seq, 783f5c17aaeSDavid Howells u32 abort_code, int error) 784f5c17aaeSDavid Howells { 7855a42976dSDavid Howells trace_rxrpc_abort(why, call->cid, call->call_id, seq, 7865a42976dSDavid Howells abort_code, error); 787248f219cSDavid Howells return __rxrpc_set_call_completion(call, RXRPC_CALL_LOCALLY_ABORTED, 788248f219cSDavid Howells abort_code, error); 789f5c17aaeSDavid Howells } 790f5c17aaeSDavid Howells 7915a42976dSDavid Howells static inline bool rxrpc_abort_call(const char *why, struct rxrpc_call *call, 7925a42976dSDavid Howells rxrpc_seq_t seq, u32 abort_code, int error) 793f5c17aaeSDavid Howells { 794f5c17aaeSDavid Howells bool ret; 795f5c17aaeSDavid Howells 796f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 7975a42976dSDavid Howells ret = __rxrpc_abort_call(why, call, seq, abort_code, error); 798f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 799f5c17aaeSDavid Howells return ret; 800f5c17aaeSDavid Howells } 801f5c17aaeSDavid Howells 802f5c17aaeSDavid Howells /* 8034a3388c8SDavid Howells * conn_client.c 8044a3388c8SDavid Howells */ 80545025bceSDavid Howells extern unsigned int rxrpc_max_client_connections; 80645025bceSDavid Howells extern unsigned int rxrpc_reap_client_connections; 80745025bceSDavid Howells extern unsigned int rxrpc_conn_idle_client_expiry; 80845025bceSDavid Howells extern unsigned int rxrpc_conn_idle_client_fast_expiry; 8094a3388c8SDavid Howells extern struct idr rxrpc_client_conn_ids; 8104a3388c8SDavid Howells 811eb9b9d22SDavid Howells void rxrpc_destroy_client_conn_ids(void); 812c6d2b8d7SDavid Howells int rxrpc_connect_call(struct rxrpc_call *, struct rxrpc_conn_parameters *, 813c6d2b8d7SDavid Howells struct sockaddr_rxrpc *, gfp_t); 81445025bceSDavid Howells void rxrpc_expose_client_call(struct rxrpc_call *); 81545025bceSDavid Howells void rxrpc_disconnect_client_call(struct rxrpc_call *); 81645025bceSDavid Howells void rxrpc_put_client_conn(struct rxrpc_connection *); 81745025bceSDavid Howells void __exit rxrpc_destroy_all_client_connections(void); 8184a3388c8SDavid Howells 8194a3388c8SDavid Howells /* 8200d81a51aSDavid Howells * conn_event.c 8210d81a51aSDavid Howells */ 8220d81a51aSDavid Howells void rxrpc_process_connection(struct work_struct *); 8230d81a51aSDavid Howells 8240d81a51aSDavid Howells /* 8250d81a51aSDavid Howells * conn_object.c 82617926a79SDavid Howells */ 827dad8aff7SDavid Howells extern unsigned int rxrpc_connection_expiry; 82817926a79SDavid Howells extern struct list_head rxrpc_connections; 8294d028b2cSDavid Howells extern struct list_head rxrpc_connection_proc_list; 83017926a79SDavid Howells extern rwlock_t rxrpc_connection_lock; 83117926a79SDavid Howells 8328496af50SDavid Howells int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 833c6d2b8d7SDavid Howells struct rxrpc_connection *rxrpc_alloc_connection(gfp_t); 8348496af50SDavid Howells struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *, 835aa390bbeSDavid Howells struct sk_buff *); 83645025bceSDavid Howells void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); 837999b69f8SDavid Howells void rxrpc_disconnect_call(struct rxrpc_call *); 83845025bceSDavid Howells void rxrpc_kill_connection(struct rxrpc_connection *); 839363deeabSDavid Howells bool rxrpc_queue_conn(struct rxrpc_connection *); 840363deeabSDavid Howells void rxrpc_see_connection(struct rxrpc_connection *); 841363deeabSDavid Howells void rxrpc_get_connection(struct rxrpc_connection *); 842363deeabSDavid Howells struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *); 843363deeabSDavid Howells void rxrpc_put_service_conn(struct rxrpc_connection *); 844c1b1203dSJoe Perches void __exit rxrpc_destroy_all_connections(void); 84517926a79SDavid Howells 84619ffa01cSDavid Howells static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) 84719ffa01cSDavid Howells { 84819ffa01cSDavid Howells return conn->out_clientflag; 84919ffa01cSDavid Howells } 85019ffa01cSDavid Howells 85119ffa01cSDavid Howells static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) 85219ffa01cSDavid Howells { 853e8d70ce1SDavid Howells return !rxrpc_conn_is_client(conn); 85419ffa01cSDavid Howells } 85519ffa01cSDavid Howells 856f51b4480SDavid Howells static inline void rxrpc_put_connection(struct rxrpc_connection *conn) 857f51b4480SDavid Howells { 85845025bceSDavid Howells if (!conn) 85945025bceSDavid Howells return; 86045025bceSDavid Howells 861363deeabSDavid Howells if (rxrpc_conn_is_client(conn)) 86245025bceSDavid Howells rxrpc_put_client_conn(conn); 863363deeabSDavid Howells else 864363deeabSDavid Howells rxrpc_put_service_conn(conn); 8655acbee46SDavid Howells } 8665acbee46SDavid Howells 86717926a79SDavid Howells /* 8687877a4a4SDavid Howells * conn_service.c 8697877a4a4SDavid Howells */ 8708496af50SDavid Howells struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, 8718496af50SDavid Howells struct sk_buff *); 87200e90712SDavid Howells struct rxrpc_connection *rxrpc_prealloc_service_connection(gfp_t); 873248f219cSDavid Howells void rxrpc_new_incoming_connection(struct rxrpc_connection *, struct sk_buff *); 874001c1122SDavid Howells void rxrpc_unpublish_service_conn(struct rxrpc_connection *); 8757877a4a4SDavid Howells 8767877a4a4SDavid Howells /* 8770d81a51aSDavid Howells * input.c 87817926a79SDavid Howells */ 879676d2369SDavid S. Miller void rxrpc_data_ready(struct sock *); 88017926a79SDavid Howells 88117926a79SDavid Howells /* 8820d81a51aSDavid Howells * insecure.c 88317926a79SDavid Howells */ 8840d81a51aSDavid Howells extern const struct rxrpc_security rxrpc_no_security; 88517926a79SDavid Howells 88617926a79SDavid Howells /* 8870d81a51aSDavid Howells * key.c 88817926a79SDavid Howells */ 88917926a79SDavid Howells extern struct key_type key_type_rxrpc; 89017926a79SDavid Howells extern struct key_type key_type_rxrpc_s; 89117926a79SDavid Howells 892c1b1203dSJoe Perches int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); 893c1b1203dSJoe Perches int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); 894c1b1203dSJoe Perches int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time_t, 895c1b1203dSJoe Perches u32); 89617926a79SDavid Howells 89717926a79SDavid Howells /* 89887563616SDavid Howells * local_event.c 89987563616SDavid Howells */ 9004f95dd78SDavid Howells extern void rxrpc_process_local_events(struct rxrpc_local *); 90187563616SDavid Howells 90287563616SDavid Howells /* 9030d81a51aSDavid Howells * local_object.c 90417926a79SDavid Howells */ 9054f95dd78SDavid Howells struct rxrpc_local *rxrpc_lookup_local(const struct sockaddr_rxrpc *); 9064f95dd78SDavid Howells void __rxrpc_put_local(struct rxrpc_local *); 9070d81a51aSDavid Howells void __exit rxrpc_destroy_all_locals(void); 908e0e4d82fSDavid Howells 9094f95dd78SDavid Howells static inline void rxrpc_get_local(struct rxrpc_local *local) 9104f95dd78SDavid Howells { 9114f95dd78SDavid Howells atomic_inc(&local->usage); 9124f95dd78SDavid Howells } 9134f95dd78SDavid Howells 9144f95dd78SDavid Howells static inline 9154f95dd78SDavid Howells struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *local) 9164f95dd78SDavid Howells { 9174f95dd78SDavid Howells return atomic_inc_not_zero(&local->usage) ? local : NULL; 9184f95dd78SDavid Howells } 9194f95dd78SDavid Howells 9204f95dd78SDavid Howells static inline void rxrpc_put_local(struct rxrpc_local *local) 9214f95dd78SDavid Howells { 9225627cc8bSDavid Howells if (local && atomic_dec_and_test(&local->usage)) 9234f95dd78SDavid Howells __rxrpc_put_local(local); 9244f95dd78SDavid Howells } 9254f95dd78SDavid Howells 9265acbee46SDavid Howells static inline void rxrpc_queue_local(struct rxrpc_local *local) 9275acbee46SDavid Howells { 9285acbee46SDavid Howells rxrpc_queue_work(&local->processor); 9295acbee46SDavid Howells } 9305acbee46SDavid Howells 931e0e4d82fSDavid Howells /* 9328e688d9cSDavid Howells * misc.c 9338e688d9cSDavid Howells */ 9340e119b41SDavid Howells extern unsigned int rxrpc_max_backlog __read_mostly; 9358e688d9cSDavid Howells extern unsigned int rxrpc_requested_ack_delay; 9368e688d9cSDavid Howells extern unsigned int rxrpc_soft_ack_delay; 9378e688d9cSDavid Howells extern unsigned int rxrpc_idle_ack_delay; 9388e688d9cSDavid Howells extern unsigned int rxrpc_rx_window_size; 9398e688d9cSDavid Howells extern unsigned int rxrpc_rx_mtu; 9408e688d9cSDavid Howells extern unsigned int rxrpc_rx_jumbo_max; 9410b58b8a1SDavid Howells extern unsigned int rxrpc_resend_timeout; 9428e688d9cSDavid Howells 9438e688d9cSDavid Howells extern const s8 rxrpc_ack_priority[]; 9448e688d9cSDavid Howells 9458e688d9cSDavid Howells /* 9460d81a51aSDavid Howells * output.c 9470d81a51aSDavid Howells */ 9488d94aa38SDavid Howells int rxrpc_send_call_packet(struct rxrpc_call *, u8); 949985a5c82SDavid Howells int rxrpc_send_data_packet(struct rxrpc_connection *, struct sk_buff *); 950248f219cSDavid Howells void rxrpc_reject_packets(struct rxrpc_local *); 9510d81a51aSDavid Howells 9520d81a51aSDavid Howells /* 953abe89ef0SDavid Howells * peer_event.c 9540d81a51aSDavid Howells */ 955abe89ef0SDavid Howells void rxrpc_error_report(struct sock *); 956f66d7490SDavid Howells void rxrpc_peer_error_distributor(struct work_struct *); 9570d81a51aSDavid Howells 9580d81a51aSDavid Howells /* 9590d81a51aSDavid Howells * peer_object.c 9600d81a51aSDavid Howells */ 961be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, 962be6e6707SDavid Howells const struct sockaddr_rxrpc *); 963be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *, 964be6e6707SDavid Howells struct sockaddr_rxrpc *, gfp_t); 965be6e6707SDavid Howells struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); 966248f219cSDavid Howells struct rxrpc_peer *rxrpc_lookup_incoming_peer(struct rxrpc_local *, 967248f219cSDavid Howells struct rxrpc_peer *); 968be6e6707SDavid Howells 969df5d8bf7SDavid Howells static inline struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *peer) 970be6e6707SDavid Howells { 971be6e6707SDavid Howells atomic_inc(&peer->usage); 972df5d8bf7SDavid Howells return peer; 973be6e6707SDavid Howells } 974be6e6707SDavid Howells 975be6e6707SDavid Howells static inline 976be6e6707SDavid Howells struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *peer) 977be6e6707SDavid Howells { 978be6e6707SDavid Howells return atomic_inc_not_zero(&peer->usage) ? peer : NULL; 979be6e6707SDavid Howells } 980be6e6707SDavid Howells 981be6e6707SDavid Howells extern void __rxrpc_put_peer(struct rxrpc_peer *peer); 982be6e6707SDavid Howells static inline void rxrpc_put_peer(struct rxrpc_peer *peer) 983be6e6707SDavid Howells { 9845627cc8bSDavid Howells if (peer && atomic_dec_and_test(&peer->usage)) 985be6e6707SDavid Howells __rxrpc_put_peer(peer); 986be6e6707SDavid Howells } 9870d81a51aSDavid Howells 9880d81a51aSDavid Howells /* 9890d81a51aSDavid Howells * proc.c 9900d81a51aSDavid Howells */ 9910d81a51aSDavid Howells extern const struct file_operations rxrpc_call_seq_fops; 9920d81a51aSDavid Howells extern const struct file_operations rxrpc_connection_seq_fops; 9930d81a51aSDavid Howells 9940d81a51aSDavid Howells /* 9950d81a51aSDavid Howells * recvmsg.c 9960d81a51aSDavid Howells */ 997248f219cSDavid Howells void rxrpc_notify_socket(struct rxrpc_call *); 9980d81a51aSDavid Howells int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); 9990d81a51aSDavid Howells 10000d81a51aSDavid Howells /* 1001648af7fcSDavid Howells * rxkad.c 1002648af7fcSDavid Howells */ 1003648af7fcSDavid Howells #ifdef CONFIG_RXKAD 1004648af7fcSDavid Howells extern const struct rxrpc_security rxkad; 1005648af7fcSDavid Howells #endif 1006648af7fcSDavid Howells 1007648af7fcSDavid Howells /* 10080d81a51aSDavid Howells * security.c 10090d81a51aSDavid Howells */ 10100d81a51aSDavid Howells int __init rxrpc_init_security(void); 10110d81a51aSDavid Howells void rxrpc_exit_security(void); 10120d81a51aSDavid Howells int rxrpc_init_client_conn_security(struct rxrpc_connection *); 10130d81a51aSDavid Howells int rxrpc_init_server_conn_security(struct rxrpc_connection *); 10140d81a51aSDavid Howells 10150d81a51aSDavid Howells /* 10160b58b8a1SDavid Howells * sendmsg.c 10170b58b8a1SDavid Howells */ 10180b58b8a1SDavid Howells int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); 10190b58b8a1SDavid Howells 10200b58b8a1SDavid Howells /* 10210d81a51aSDavid Howells * skbuff.c 10220d81a51aSDavid Howells */ 1023d001648eSDavid Howells void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); 10240d81a51aSDavid Howells void rxrpc_packet_destructor(struct sk_buff *); 102571f3ca40SDavid Howells void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); 102671f3ca40SDavid Howells void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); 102771f3ca40SDavid Howells void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); 102871f3ca40SDavid Howells void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); 102971f3ca40SDavid Howells void rxrpc_lose_skb(struct sk_buff *, enum rxrpc_skb_trace); 1030df844fd4SDavid Howells void rxrpc_purge_queue(struct sk_buff_head *); 10310d81a51aSDavid Howells 10320d81a51aSDavid Howells /* 10335873c083SDavid Howells * sysctl.c 10345873c083SDavid Howells */ 10355873c083SDavid Howells #ifdef CONFIG_SYSCTL 10365873c083SDavid Howells extern int __init rxrpc_sysctl_init(void); 10375873c083SDavid Howells extern void rxrpc_sysctl_exit(void); 10385873c083SDavid Howells #else 10395873c083SDavid Howells static inline int __init rxrpc_sysctl_init(void) { return 0; } 10405873c083SDavid Howells static inline void rxrpc_sysctl_exit(void) {} 10415873c083SDavid Howells #endif 10425873c083SDavid Howells 10435873c083SDavid Howells /* 1044be6e6707SDavid Howells * utils.c 1045be6e6707SDavid Howells */ 1046d991b4a3SDavid Howells int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 1047be6e6707SDavid Howells 1048248f219cSDavid Howells static inline bool before(u32 seq1, u32 seq2) 1049248f219cSDavid Howells { 1050248f219cSDavid Howells return (s32)(seq1 - seq2) < 0; 1051248f219cSDavid Howells } 1052248f219cSDavid Howells static inline bool before_eq(u32 seq1, u32 seq2) 1053248f219cSDavid Howells { 1054248f219cSDavid Howells return (s32)(seq1 - seq2) <= 0; 1055248f219cSDavid Howells } 1056248f219cSDavid Howells static inline bool after(u32 seq1, u32 seq2) 1057248f219cSDavid Howells { 1058248f219cSDavid Howells return (s32)(seq1 - seq2) > 0; 1059248f219cSDavid Howells } 1060248f219cSDavid Howells static inline bool after_eq(u32 seq1, u32 seq2) 1061248f219cSDavid Howells { 1062248f219cSDavid Howells return (s32)(seq1 - seq2) >= 0; 1063248f219cSDavid Howells } 1064248f219cSDavid Howells 1065be6e6707SDavid Howells /* 106617926a79SDavid Howells * debug tracing 106717926a79SDavid Howells */ 106895c96174SEric Dumazet extern unsigned int rxrpc_debug; 106917926a79SDavid Howells 107017926a79SDavid Howells #define dbgprintk(FMT,...) \ 10719f389f4bSSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 107217926a79SDavid Howells 10730dc47877SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 10740dc47877SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 107517926a79SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 107617926a79SDavid Howells #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) 107717926a79SDavid Howells #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) 107817926a79SDavid Howells 107917926a79SDavid Howells 108017926a79SDavid Howells #if defined(__KDEBUG) 108117926a79SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 108217926a79SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 108317926a79SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 108417926a79SDavid Howells #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) 108517926a79SDavid Howells #define _net(FMT,...) knet(FMT,##__VA_ARGS__) 108617926a79SDavid Howells 108717926a79SDavid Howells #elif defined(CONFIG_AF_RXRPC_DEBUG) 108817926a79SDavid Howells #define RXRPC_DEBUG_KENTER 0x01 108917926a79SDavid Howells #define RXRPC_DEBUG_KLEAVE 0x02 109017926a79SDavid Howells #define RXRPC_DEBUG_KDEBUG 0x04 109117926a79SDavid Howells #define RXRPC_DEBUG_KPROTO 0x08 109217926a79SDavid Howells #define RXRPC_DEBUG_KNET 0x10 109317926a79SDavid Howells 109417926a79SDavid Howells #define _enter(FMT,...) \ 109517926a79SDavid Howells do { \ 109617926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ 109717926a79SDavid Howells kenter(FMT,##__VA_ARGS__); \ 109817926a79SDavid Howells } while (0) 109917926a79SDavid Howells 110017926a79SDavid Howells #define _leave(FMT,...) \ 110117926a79SDavid Howells do { \ 110217926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ 110317926a79SDavid Howells kleave(FMT,##__VA_ARGS__); \ 110417926a79SDavid Howells } while (0) 110517926a79SDavid Howells 110617926a79SDavid Howells #define _debug(FMT,...) \ 110717926a79SDavid Howells do { \ 110817926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ 110917926a79SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 111017926a79SDavid Howells } while (0) 111117926a79SDavid Howells 111217926a79SDavid Howells #define _proto(FMT,...) \ 111317926a79SDavid Howells do { \ 111417926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ 111517926a79SDavid Howells kproto(FMT,##__VA_ARGS__); \ 111617926a79SDavid Howells } while (0) 111717926a79SDavid Howells 111817926a79SDavid Howells #define _net(FMT,...) \ 111917926a79SDavid Howells do { \ 112017926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ 112117926a79SDavid Howells knet(FMT,##__VA_ARGS__); \ 112217926a79SDavid Howells } while (0) 112317926a79SDavid Howells 112417926a79SDavid Howells #else 112512fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 112612fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 112712fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 112812fdff3fSDavid Howells #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) 112912fdff3fSDavid Howells #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) 113017926a79SDavid Howells #endif 113117926a79SDavid Howells 113217926a79SDavid Howells /* 113317926a79SDavid Howells * debug assertion checking 113417926a79SDavid Howells */ 113517926a79SDavid Howells #if 1 // defined(__KDEBUGALL) 113617926a79SDavid Howells 113717926a79SDavid Howells #define ASSERT(X) \ 113817926a79SDavid Howells do { \ 113917926a79SDavid Howells if (unlikely(!(X))) { \ 11409b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 114117926a79SDavid Howells BUG(); \ 114217926a79SDavid Howells } \ 114317926a79SDavid Howells } while (0) 114417926a79SDavid Howells 114517926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 114617926a79SDavid Howells do { \ 1147cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1148cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 11499b6d5398SJoe Perches if (unlikely(!(_x OP _y))) { \ 11509b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1151cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1152cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 115317926a79SDavid Howells BUG(); \ 115417926a79SDavid Howells } \ 115517926a79SDavid Howells } while (0) 115617926a79SDavid Howells 115717926a79SDavid Howells #define ASSERTIF(C, X) \ 115817926a79SDavid Howells do { \ 115917926a79SDavid Howells if (unlikely((C) && !(X))) { \ 11609b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 116117926a79SDavid Howells BUG(); \ 116217926a79SDavid Howells } \ 116317926a79SDavid Howells } while (0) 116417926a79SDavid Howells 116517926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 116617926a79SDavid Howells do { \ 1167cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1168cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 11699b6d5398SJoe Perches if (unlikely((C) && !(_x OP _y))) { \ 11709b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1171cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1172cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 117317926a79SDavid Howells BUG(); \ 117417926a79SDavid Howells } \ 117517926a79SDavid Howells } while (0) 117617926a79SDavid Howells 117717926a79SDavid Howells #else 117817926a79SDavid Howells 117917926a79SDavid Howells #define ASSERT(X) \ 118017926a79SDavid Howells do { \ 118117926a79SDavid Howells } while (0) 118217926a79SDavid Howells 118317926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 118417926a79SDavid Howells do { \ 118517926a79SDavid Howells } while (0) 118617926a79SDavid Howells 118717926a79SDavid Howells #define ASSERTIF(C, X) \ 118817926a79SDavid Howells do { \ 118917926a79SDavid Howells } while (0) 119017926a79SDavid Howells 119117926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 119217926a79SDavid Howells do { \ 119317926a79SDavid Howells } while (0) 119417926a79SDavid Howells 119517926a79SDavid Howells #endif /* __KDEBUGALL */ 1196