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 { 145248f219cSDavid Howells u8 nr_jumbo; /* Number of jumbo subpackets */ 146248f219cSDavid Howells }; 14717926a79SDavid Howells union { 14895c96174SEric Dumazet unsigned int offset; /* offset into buffer of next read */ 14917926a79SDavid Howells int remain; /* amount of space remaining for next write */ 15017926a79SDavid Howells u32 error; /* network error code */ 15117926a79SDavid Howells }; 15217926a79SDavid Howells 1530d12f8a4SDavid Howells struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ 15417926a79SDavid Howells }; 15517926a79SDavid Howells 15617926a79SDavid Howells #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) 15717926a79SDavid Howells 15817926a79SDavid Howells /* 15917926a79SDavid Howells * RxRPC security module interface 16017926a79SDavid Howells */ 16117926a79SDavid Howells struct rxrpc_security { 16217926a79SDavid Howells const char *name; /* name of this service */ 16317926a79SDavid Howells u8 security_index; /* security type provided */ 16417926a79SDavid Howells 165648af7fcSDavid Howells /* Initialise a security service */ 166648af7fcSDavid Howells int (*init)(void); 167648af7fcSDavid Howells 168648af7fcSDavid Howells /* Clean up a security service */ 169648af7fcSDavid Howells void (*exit)(void); 170648af7fcSDavid Howells 17117926a79SDavid Howells /* initialise a connection's security */ 17217926a79SDavid Howells int (*init_connection_security)(struct rxrpc_connection *); 17317926a79SDavid Howells 17417926a79SDavid Howells /* prime a connection's packet security */ 175a263629dSHerbert Xu int (*prime_packet_security)(struct rxrpc_connection *); 17617926a79SDavid Howells 17717926a79SDavid Howells /* impose security on a packet */ 178a263629dSHerbert Xu int (*secure_packet)(struct rxrpc_call *, 17917926a79SDavid Howells struct sk_buff *, 18017926a79SDavid Howells size_t, 18117926a79SDavid Howells void *); 18217926a79SDavid Howells 18317926a79SDavid Howells /* verify the security on a received packet */ 1845a42976dSDavid Howells int (*verify_packet)(struct rxrpc_call *, struct sk_buff *, 185248f219cSDavid Howells unsigned int, unsigned int, rxrpc_seq_t, u16); 186248f219cSDavid Howells 187248f219cSDavid Howells /* Locate the data in a received packet that has been verified. */ 188248f219cSDavid Howells void (*locate_data)(struct rxrpc_call *, struct sk_buff *, 189248f219cSDavid Howells unsigned int *, unsigned int *); 19017926a79SDavid Howells 19117926a79SDavid Howells /* issue a challenge */ 19217926a79SDavid Howells int (*issue_challenge)(struct rxrpc_connection *); 19317926a79SDavid Howells 19417926a79SDavid Howells /* respond to a challenge */ 19517926a79SDavid Howells int (*respond_to_challenge)(struct rxrpc_connection *, 19617926a79SDavid Howells struct sk_buff *, 19717926a79SDavid Howells u32 *); 19817926a79SDavid Howells 19917926a79SDavid Howells /* verify a response */ 20017926a79SDavid Howells int (*verify_response)(struct rxrpc_connection *, 20117926a79SDavid Howells struct sk_buff *, 20217926a79SDavid Howells u32 *); 20317926a79SDavid Howells 20417926a79SDavid Howells /* clear connection security */ 20517926a79SDavid Howells void (*clear)(struct rxrpc_connection *); 20617926a79SDavid Howells }; 20717926a79SDavid Howells 20817926a79SDavid Howells /* 2094f95dd78SDavid Howells * RxRPC local transport endpoint description 2104f95dd78SDavid Howells * - owned by a single AF_RXRPC socket 2114f95dd78SDavid Howells * - pointed to by transport socket struct sk_user_data 21217926a79SDavid Howells */ 21317926a79SDavid Howells struct rxrpc_local { 2144f95dd78SDavid Howells struct rcu_head rcu; 2154f95dd78SDavid Howells atomic_t usage; 2164f95dd78SDavid Howells struct list_head link; 21717926a79SDavid Howells struct socket *socket; /* my UDP socket */ 2184f95dd78SDavid Howells struct work_struct processor; 219de8d6c74SDavid Howells struct hlist_head services; /* services listening on this endpoint */ 22017926a79SDavid Howells struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ 22117926a79SDavid Howells struct sk_buff_head reject_queue; /* packets awaiting rejection */ 22244ba0698SDavid Howells struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */ 223999b69f8SDavid Howells struct rb_root client_conns; /* Client connections by socket params */ 224999b69f8SDavid Howells spinlock_t client_conns_lock; /* Lock for client_conns */ 22517926a79SDavid Howells spinlock_t lock; /* access lock */ 22617926a79SDavid Howells rwlock_t services_lock; /* lock for services list */ 22717926a79SDavid Howells int debug_id; /* debug ID for printks */ 2284f95dd78SDavid Howells bool dead; 22917926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 23017926a79SDavid Howells }; 23117926a79SDavid Howells 23217926a79SDavid Howells /* 23317926a79SDavid Howells * RxRPC remote transport endpoint definition 234be6e6707SDavid Howells * - matched by local endpoint, remote port, address and protocol type 23517926a79SDavid Howells */ 23617926a79SDavid Howells struct rxrpc_peer { 237be6e6707SDavid Howells struct rcu_head rcu; /* This must be first */ 238be6e6707SDavid Howells atomic_t usage; 239be6e6707SDavid Howells unsigned long hash_key; 240be6e6707SDavid Howells struct hlist_node hash_link; 241be6e6707SDavid Howells struct rxrpc_local *local; 242f66d7490SDavid Howells struct hlist_head error_targets; /* targets for net error distribution */ 243f66d7490SDavid Howells struct work_struct error_distributor; 244aa390bbeSDavid Howells struct rb_root service_conns; /* Service connections */ 2458496af50SDavid Howells seqlock_t service_conn_lock; 24617926a79SDavid Howells spinlock_t lock; /* access lock */ 24795c96174SEric Dumazet unsigned int if_mtu; /* interface MTU for this peer */ 24895c96174SEric Dumazet unsigned int mtu; /* network MTU for this peer */ 24995c96174SEric Dumazet unsigned int maxdata; /* data size (MTU - hdrsize) */ 25017926a79SDavid Howells unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ 25117926a79SDavid Howells int debug_id; /* debug ID for printks */ 252f66d7490SDavid Howells int error_report; /* Net (+0) or local (+1000000) to distribute */ 253f66d7490SDavid Howells #define RXRPC_LOCAL_ERROR_OFFSET 1000000 25417926a79SDavid Howells struct sockaddr_rxrpc srx; /* remote address */ 25517926a79SDavid Howells 25617926a79SDavid Howells /* calculated RTT cache */ 25717926a79SDavid Howells #define RXRPC_RTT_CACHE_SIZE 32 2580d4b103cSDavid Howells ktime_t rtt_last_req; /* Time of last RTT request */ 259cf1a6474SDavid Howells u64 rtt; /* Current RTT estimate (in nS) */ 260cf1a6474SDavid Howells u64 rtt_sum; /* Sum of cache contents */ 261cf1a6474SDavid Howells u64 rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* Determined RTT cache */ 262cf1a6474SDavid Howells u8 rtt_cursor; /* next entry at which to insert */ 263cf1a6474SDavid Howells u8 rtt_usage; /* amount of cache actually used */ 26417926a79SDavid Howells }; 26517926a79SDavid Howells 26617926a79SDavid Howells /* 26719ffa01cSDavid Howells * Keys for matching a connection. 26819ffa01cSDavid Howells */ 26919ffa01cSDavid Howells struct rxrpc_conn_proto { 270e8d70ce1SDavid Howells union { 271e8d70ce1SDavid Howells struct { 27219ffa01cSDavid Howells u32 epoch; /* epoch of this connection */ 27319ffa01cSDavid Howells u32 cid; /* connection ID */ 274e8d70ce1SDavid Howells }; 275e8d70ce1SDavid Howells u64 index_key; 27619ffa01cSDavid Howells }; 27719ffa01cSDavid Howells }; 27819ffa01cSDavid Howells 27919ffa01cSDavid Howells struct rxrpc_conn_parameters { 28019ffa01cSDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 28119ffa01cSDavid Howells struct rxrpc_peer *peer; /* Remote endpoint */ 28219ffa01cSDavid Howells struct key *key; /* Security details */ 28319ffa01cSDavid Howells bool exclusive; /* T if conn is exclusive */ 28419ffa01cSDavid Howells u16 service_id; /* Service ID for this connection */ 28519ffa01cSDavid Howells u32 security_level; /* Security level selected */ 28619ffa01cSDavid Howells }; 28719ffa01cSDavid Howells 28819ffa01cSDavid Howells /* 289bba304dbSDavid Howells * Bits in the connection flags. 290bba304dbSDavid Howells */ 291bba304dbSDavid Howells enum rxrpc_conn_flag { 292bba304dbSDavid Howells RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ 293001c1122SDavid Howells RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ 294001c1122SDavid Howells RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */ 29545025bceSDavid Howells RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */ 29645025bceSDavid Howells RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ 29745025bceSDavid Howells RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */ 298bba304dbSDavid Howells }; 299bba304dbSDavid Howells 300bba304dbSDavid Howells /* 301bba304dbSDavid Howells * Events that can be raised upon a connection. 302bba304dbSDavid Howells */ 303bba304dbSDavid Howells enum rxrpc_conn_event { 304bba304dbSDavid Howells RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ 305bba304dbSDavid Howells }; 306bba304dbSDavid Howells 307bba304dbSDavid Howells /* 30845025bceSDavid Howells * The connection cache state. 30945025bceSDavid Howells */ 31045025bceSDavid Howells enum rxrpc_conn_cache_state { 31145025bceSDavid Howells RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */ 31245025bceSDavid Howells RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */ 31345025bceSDavid Howells RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */ 31445025bceSDavid Howells RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */ 31545025bceSDavid Howells RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */ 316363deeabSDavid Howells RXRPC_CONN__NR_CACHE_STATES 31745025bceSDavid Howells }; 31845025bceSDavid Howells 31945025bceSDavid Howells /* 320bba304dbSDavid Howells * The connection protocol state. 321bba304dbSDavid Howells */ 322bba304dbSDavid Howells enum rxrpc_conn_proto_state { 323bba304dbSDavid Howells RXRPC_CONN_UNUSED, /* Connection not yet attempted */ 324bba304dbSDavid Howells RXRPC_CONN_CLIENT, /* Client connection */ 32500e90712SDavid Howells RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ 326bba304dbSDavid Howells RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ 327bba304dbSDavid Howells RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ 328bba304dbSDavid Howells RXRPC_CONN_SERVICE, /* Service secured connection */ 329bba304dbSDavid Howells RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */ 330bba304dbSDavid Howells RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */ 331bba304dbSDavid Howells RXRPC_CONN__NR_STATES 332bba304dbSDavid Howells }; 333bba304dbSDavid Howells 334bba304dbSDavid Howells /* 33517926a79SDavid Howells * RxRPC connection definition 336aa390bbeSDavid Howells * - matched by { local, peer, epoch, conn_id, direction } 33717926a79SDavid Howells * - each connection can only handle four simultaneous calls 33817926a79SDavid Howells */ 33917926a79SDavid Howells struct rxrpc_connection { 34019ffa01cSDavid Howells struct rxrpc_conn_proto proto; 34119ffa01cSDavid Howells struct rxrpc_conn_parameters params; 34219ffa01cSDavid Howells 34345025bceSDavid Howells atomic_t usage; 34445025bceSDavid Howells struct rcu_head rcu; 34545025bceSDavid Howells struct list_head cache_link; 346a1399f8bSDavid Howells 34745025bceSDavid Howells spinlock_t channel_lock; 34845025bceSDavid Howells unsigned char active_chans; /* Mask of active channels */ 34945025bceSDavid Howells #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1) 35045025bceSDavid Howells struct list_head waiting_calls; /* Calls waiting for channels */ 351a1399f8bSDavid Howells struct rxrpc_channel { 352a1399f8bSDavid Howells struct rxrpc_call __rcu *call; /* Active call */ 353a1399f8bSDavid Howells u32 call_id; /* ID of current call */ 354a1399f8bSDavid Howells u32 call_counter; /* Call ID counter */ 355a1399f8bSDavid Howells u32 last_call; /* ID of last call */ 35618bfeba5SDavid Howells u8 last_type; /* Type of last packet */ 35718bfeba5SDavid Howells u16 last_service_id; 35818bfeba5SDavid Howells union { 35918bfeba5SDavid Howells u32 last_seq; 36018bfeba5SDavid Howells u32 last_abort; 36118bfeba5SDavid Howells }; 362a1399f8bSDavid Howells } channels[RXRPC_MAXCALLS]; 363999b69f8SDavid Howells 36417926a79SDavid Howells struct work_struct processor; /* connection event processor */ 365999b69f8SDavid Howells union { 366999b69f8SDavid Howells struct rb_node client_node; /* Node in local->client_conns */ 367aa390bbeSDavid Howells struct rb_node service_node; /* Node in peer->service_conns */ 368999b69f8SDavid Howells }; 3694d028b2cSDavid Howells struct list_head proc_link; /* link in procfs list */ 37017926a79SDavid Howells struct list_head link; /* link in master connection list */ 37117926a79SDavid Howells struct sk_buff_head rx_queue; /* received conn-level packets */ 372648af7fcSDavid Howells const struct rxrpc_security *security; /* applied security module */ 37317926a79SDavid Howells struct key *server_key; /* security for this service */ 3741afe593bSHerbert Xu struct crypto_skcipher *cipher; /* encryption handle */ 37517926a79SDavid Howells struct rxrpc_crypt csum_iv; /* packet checksum base */ 3764a3388c8SDavid Howells unsigned long flags; 37717926a79SDavid Howells unsigned long events; 378f51b4480SDavid Howells unsigned long idle_timestamp; /* Time at which last became idle */ 37917926a79SDavid Howells spinlock_t state_lock; /* state-change lock */ 380cf13258fSDavid Howells enum rxrpc_conn_cache_state cache_state; 381cf13258fSDavid Howells enum rxrpc_conn_proto_state state; /* current state of connection */ 382dc44b3a0SDavid Howells u32 local_abort; /* local abort code */ 383dc44b3a0SDavid Howells u32 remote_abort; /* remote abort code */ 38417926a79SDavid Howells int debug_id; /* debug ID for printks */ 38517926a79SDavid Howells atomic_t serial; /* packet serial number counter */ 386563ea7d5SDavid Howells unsigned int hi_serial; /* highest serial number received */ 38717926a79SDavid Howells u32 security_nonce; /* response re-use preventer */ 3885a924b89SDavid Howells u8 size_align; /* data size alignment (for security) */ 3895a924b89SDavid Howells u8 security_size; /* security header size */ 39017926a79SDavid Howells u8 security_ix; /* security type */ 39117926a79SDavid Howells u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ 39217926a79SDavid Howells }; 39317926a79SDavid Howells 39417926a79SDavid Howells /* 3955b8848d1SDavid Howells * Flags in call->flags. 3965b8848d1SDavid Howells */ 3975b8848d1SDavid Howells enum rxrpc_call_flag { 3985b8848d1SDavid Howells RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ 3995b8848d1SDavid Howells RXRPC_CALL_HAS_USERID, /* has a user ID attached */ 400dabe5a79SDavid Howells RXRPC_CALL_IS_SERVICE, /* Call is service call */ 40145025bceSDavid Howells RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ 402248f219cSDavid Howells RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ 403248f219cSDavid Howells RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ 4048e83134dSDavid Howells RXRPC_CALL_PINGING, /* Ping in process */ 4055b8848d1SDavid Howells }; 4065b8848d1SDavid Howells 4075b8848d1SDavid Howells /* 4085b8848d1SDavid Howells * Events that can be raised on a call. 4095b8848d1SDavid Howells */ 4105b8848d1SDavid Howells enum rxrpc_call_event { 4114c198ad1SDavid Howells RXRPC_CALL_EV_ACK, /* need to generate ACK */ 4124c198ad1SDavid Howells RXRPC_CALL_EV_ABORT, /* need to generate abort */ 413248f219cSDavid Howells RXRPC_CALL_EV_TIMER, /* Timer expired */ 4144c198ad1SDavid Howells RXRPC_CALL_EV_RESEND, /* Tx resend required */ 4155b8848d1SDavid Howells }; 4165b8848d1SDavid Howells 4175b8848d1SDavid Howells /* 4185b8848d1SDavid Howells * The states that a call can be in. 4195b8848d1SDavid Howells */ 4205b8848d1SDavid Howells enum rxrpc_call_state { 421999b69f8SDavid Howells RXRPC_CALL_UNINITIALISED, 422999b69f8SDavid Howells RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ 4235b8848d1SDavid Howells RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ 4245b8848d1SDavid Howells RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ 4255b8848d1SDavid Howells RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ 42600e90712SDavid Howells RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ 4275b8848d1SDavid Howells RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ 4285b8848d1SDavid Howells RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ 4295b8848d1SDavid Howells RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ 4305b8848d1SDavid Howells RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ 4315b8848d1SDavid Howells RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ 4325b8848d1SDavid Howells RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ 433f5c17aaeSDavid Howells RXRPC_CALL_COMPLETE, /* - call complete */ 434f5c17aaeSDavid Howells NR__RXRPC_CALL_STATES 435f5c17aaeSDavid Howells }; 436f5c17aaeSDavid Howells 437f5c17aaeSDavid Howells /* 438f5c17aaeSDavid Howells * Call completion condition (state == RXRPC_CALL_COMPLETE). 439f5c17aaeSDavid Howells */ 440f5c17aaeSDavid Howells enum rxrpc_call_completion { 441f5c17aaeSDavid Howells RXRPC_CALL_SUCCEEDED, /* - Normal termination */ 4425b8848d1SDavid Howells RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ 4435b8848d1SDavid Howells RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ 444f5c17aaeSDavid Howells RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */ 4455b8848d1SDavid Howells RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ 446f5c17aaeSDavid Howells NR__RXRPC_CALL_COMPLETIONS 4475b8848d1SDavid Howells }; 4485b8848d1SDavid Howells 4495b8848d1SDavid Howells /* 45017926a79SDavid Howells * RxRPC call definition 45117926a79SDavid Howells * - matched by { connection, call_id } 45217926a79SDavid Howells */ 45317926a79SDavid Howells struct rxrpc_call { 454dee46364SDavid Howells struct rcu_head rcu; 45517926a79SDavid Howells struct rxrpc_connection *conn; /* connection carrying call */ 456df5d8bf7SDavid Howells struct rxrpc_peer *peer; /* Peer record for remote address */ 4578d94aa38SDavid Howells struct rxrpc_sock __rcu *socket; /* socket responsible */ 458248f219cSDavid Howells unsigned long ack_at; /* When deferred ACK needs to happen */ 459248f219cSDavid Howells unsigned long resend_at; /* When next resend needs to happen */ 460248f219cSDavid Howells unsigned long expire_at; /* When the call times out */ 461248f219cSDavid Howells struct timer_list timer; /* Combined event timer */ 462248f219cSDavid Howells struct work_struct processor; /* Event processor */ 463d001648eSDavid Howells rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ 46417926a79SDavid Howells struct list_head link; /* link in master call list */ 46545025bceSDavid Howells struct list_head chan_wait_link; /* Link in conn->waiting_calls */ 466f66d7490SDavid Howells struct hlist_node error_link; /* link in error distribution list */ 467248f219cSDavid Howells struct list_head accept_link; /* Link in rx->acceptq */ 468248f219cSDavid Howells struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ 469248f219cSDavid Howells struct list_head sock_link; /* Link in rx->sock_calls */ 470248f219cSDavid Howells struct rb_node sock_node; /* Node in rx->calls */ 47117926a79SDavid Howells struct sk_buff *tx_pending; /* Tx socket buffer being filled */ 47245025bceSDavid Howells wait_queue_head_t waitq; /* Wait queue for channel or Tx */ 473a263629dSHerbert Xu __be32 crypto_buf[2]; /* Temporary packet crypto buffer */ 47417926a79SDavid Howells unsigned long user_call_ID; /* user-defined call ID */ 47517926a79SDavid Howells unsigned long flags; 47617926a79SDavid Howells unsigned long events; 47717926a79SDavid Howells spinlock_t lock; 47817926a79SDavid Howells rwlock_t state_lock; /* lock for state transition */ 479f5c17aaeSDavid Howells u32 abort_code; /* Local/remote abort code */ 480f5c17aaeSDavid Howells int error; /* Local error incurred */ 481cf13258fSDavid Howells enum rxrpc_call_state state; /* current state of call */ 482cf13258fSDavid Howells enum rxrpc_call_completion completion; /* Call completion condition */ 48317926a79SDavid Howells atomic_t usage; 484dabe5a79SDavid Howells u16 service_id; /* service ID */ 485278ac0cdSDavid Howells u8 security_ix; /* Security type */ 486dabe5a79SDavid Howells u32 call_id; /* call ID on connection */ 487dabe5a79SDavid Howells u32 cid; /* connection ID plus channel index */ 488dabe5a79SDavid Howells int debug_id; /* debug ID for printks */ 4898e83134dSDavid Howells unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ 4908e83134dSDavid Howells unsigned short rx_pkt_len; /* Current recvmsg packet len */ 49117926a79SDavid Howells 492248f219cSDavid Howells /* Rx/Tx circular buffer, depending on phase. 493248f219cSDavid Howells * 494248f219cSDavid Howells * In the Rx phase, packets are annotated with 0 or the number of the 495248f219cSDavid Howells * segment of a jumbo packet each buffer refers to. There can be up to 496248f219cSDavid Howells * 47 segments in a maximum-size UDP packet. 497248f219cSDavid Howells * 498248f219cSDavid Howells * In the Tx phase, packets are annotated with which buffers have been 499248f219cSDavid Howells * acked. 50017926a79SDavid Howells */ 501248f219cSDavid Howells #define RXRPC_RXTX_BUFF_SIZE 64 502248f219cSDavid Howells #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1) 50375e42126SDavid Howells #define RXRPC_INIT_RX_WINDOW_SIZE 32 504248f219cSDavid Howells struct sk_buff **rxtx_buffer; 505248f219cSDavid Howells u8 *rxtx_annotations; 506248f219cSDavid Howells #define RXRPC_TX_ANNO_ACK 0 507248f219cSDavid Howells #define RXRPC_TX_ANNO_UNACK 1 508248f219cSDavid Howells #define RXRPC_TX_ANNO_NAK 2 509248f219cSDavid Howells #define RXRPC_TX_ANNO_RETRANS 3 510f07373eaSDavid Howells #define RXRPC_TX_ANNO_MASK 0x03 511f07373eaSDavid Howells #define RXRPC_TX_ANNO_RESENT 0x04 512248f219cSDavid Howells #define RXRPC_RX_ANNO_JUMBO 0x3f /* Jumbo subpacket number + 1 if not zero */ 513248f219cSDavid Howells #define RXRPC_RX_ANNO_JLAST 0x40 /* Set if last element of a jumbo packet */ 514248f219cSDavid Howells #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ 515248f219cSDavid Howells rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but 516248f219cSDavid Howells * not hard-ACK'd packet follows this. 517248f219cSDavid Howells */ 518248f219cSDavid Howells rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ 519248f219cSDavid Howells rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not 520248f219cSDavid Howells * consumed packet follows this. 521248f219cSDavid Howells */ 522248f219cSDavid Howells rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */ 523248f219cSDavid Howells rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */ 524248f219cSDavid Howells u8 rx_winsize; /* Size of Rx window */ 525248f219cSDavid Howells u8 tx_winsize; /* Maximum size of Tx window */ 52671f3ca40SDavid Howells bool tx_phase; /* T if transmission phase, F if receive phase */ 52775e42126SDavid Howells u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */ 52817926a79SDavid Howells 52917926a79SDavid Howells /* receive-phase ACK management */ 5304e36a95eSDavid Howells u8 ackr_reason; /* reason to ACK */ 531563ea7d5SDavid Howells u16 ackr_skew; /* skew on packet being ACK'd */ 5320d12f8a4SDavid Howells rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ 533248f219cSDavid Howells rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ 5348e83134dSDavid Howells rxrpc_serial_t ackr_ping; /* Last ping sent */ 5358e83134dSDavid Howells ktime_t ackr_ping_time; /* Time last ping sent */ 53617926a79SDavid Howells 537248f219cSDavid Howells /* transmission-phase ACK management */ 538248f219cSDavid Howells rxrpc_serial_t acks_latest; /* serial number of latest ACK received */ 53917926a79SDavid Howells }; 54017926a79SDavid Howells 54171f3ca40SDavid Howells enum rxrpc_skb_trace { 54271f3ca40SDavid Howells rxrpc_skb_rx_cleaned, 54371f3ca40SDavid Howells rxrpc_skb_rx_freed, 54471f3ca40SDavid Howells rxrpc_skb_rx_got, 54571f3ca40SDavid Howells rxrpc_skb_rx_lost, 54671f3ca40SDavid Howells rxrpc_skb_rx_received, 54771f3ca40SDavid Howells rxrpc_skb_rx_rotated, 54871f3ca40SDavid Howells rxrpc_skb_rx_purged, 54971f3ca40SDavid Howells rxrpc_skb_rx_seen, 55071f3ca40SDavid Howells rxrpc_skb_tx_cleaned, 55171f3ca40SDavid Howells rxrpc_skb_tx_freed, 55271f3ca40SDavid Howells rxrpc_skb_tx_got, 55371f3ca40SDavid Howells rxrpc_skb_tx_lost, 55471f3ca40SDavid Howells rxrpc_skb_tx_new, 55571f3ca40SDavid Howells rxrpc_skb_tx_rotated, 55671f3ca40SDavid Howells rxrpc_skb_tx_seen, 55771f3ca40SDavid Howells rxrpc_skb__nr_trace 55871f3ca40SDavid Howells }; 55971f3ca40SDavid Howells 56071f3ca40SDavid Howells extern const char rxrpc_skb_traces[rxrpc_skb__nr_trace][7]; 56171f3ca40SDavid Howells 562363deeabSDavid Howells enum rxrpc_conn_trace { 563363deeabSDavid Howells rxrpc_conn_new_client, 564363deeabSDavid Howells rxrpc_conn_new_service, 565363deeabSDavid Howells rxrpc_conn_queued, 566363deeabSDavid Howells rxrpc_conn_seen, 567363deeabSDavid Howells rxrpc_conn_got, 568363deeabSDavid Howells rxrpc_conn_put_client, 569363deeabSDavid Howells rxrpc_conn_put_service, 570363deeabSDavid Howells rxrpc_conn__nr_trace 571363deeabSDavid Howells }; 572363deeabSDavid Howells 573363deeabSDavid Howells extern const char rxrpc_conn_traces[rxrpc_conn__nr_trace][4]; 574363deeabSDavid Howells 575363deeabSDavid Howells enum rxrpc_client_trace { 576363deeabSDavid Howells rxrpc_client_activate_chans, 577363deeabSDavid Howells rxrpc_client_alloc, 578363deeabSDavid Howells rxrpc_client_chan_activate, 579363deeabSDavid Howells rxrpc_client_chan_disconnect, 580363deeabSDavid Howells rxrpc_client_chan_pass, 581363deeabSDavid Howells rxrpc_client_chan_unstarted, 582363deeabSDavid Howells rxrpc_client_cleanup, 583363deeabSDavid Howells rxrpc_client_count, 584363deeabSDavid Howells rxrpc_client_discard, 585363deeabSDavid Howells rxrpc_client_duplicate, 586363deeabSDavid Howells rxrpc_client_exposed, 587363deeabSDavid Howells rxrpc_client_replace, 588363deeabSDavid Howells rxrpc_client_to_active, 589363deeabSDavid Howells rxrpc_client_to_culled, 590363deeabSDavid Howells rxrpc_client_to_idle, 591363deeabSDavid Howells rxrpc_client_to_inactive, 592363deeabSDavid Howells rxrpc_client_to_waiting, 593363deeabSDavid Howells rxrpc_client_uncount, 594363deeabSDavid Howells rxrpc_client__nr_trace 595363deeabSDavid Howells }; 596363deeabSDavid Howells 597363deeabSDavid Howells extern const char rxrpc_client_traces[rxrpc_client__nr_trace][7]; 598363deeabSDavid Howells extern const char rxrpc_conn_cache_states[RXRPC_CONN__NR_CACHE_STATES][5]; 599363deeabSDavid Howells 600fff72429SDavid Howells enum rxrpc_call_trace { 601fff72429SDavid Howells rxrpc_call_new_client, 602fff72429SDavid Howells rxrpc_call_new_service, 603fff72429SDavid Howells rxrpc_call_queued, 604fff72429SDavid Howells rxrpc_call_queued_ref, 605fff72429SDavid Howells rxrpc_call_seen, 606a84a46d7SDavid Howells rxrpc_call_connected, 607a84a46d7SDavid Howells rxrpc_call_release, 608fff72429SDavid Howells rxrpc_call_got, 609fff72429SDavid Howells rxrpc_call_got_userid, 610cbd00891SDavid Howells rxrpc_call_got_kernel, 611fff72429SDavid Howells rxrpc_call_put, 612fff72429SDavid Howells rxrpc_call_put_userid, 613cbd00891SDavid Howells rxrpc_call_put_kernel, 614fff72429SDavid Howells rxrpc_call_put_noqueue, 615a84a46d7SDavid Howells rxrpc_call_error, 616fff72429SDavid Howells rxrpc_call__nr_trace 617fff72429SDavid Howells }; 618fff72429SDavid Howells 619fff72429SDavid Howells extern const char rxrpc_call_traces[rxrpc_call__nr_trace][4]; 620fff72429SDavid Howells 621a124fe3eSDavid Howells enum rxrpc_transmit_trace { 622a124fe3eSDavid Howells rxrpc_transmit_wait, 623a124fe3eSDavid Howells rxrpc_transmit_queue, 624a124fe3eSDavid Howells rxrpc_transmit_queue_reqack, 625a124fe3eSDavid Howells rxrpc_transmit_queue_last, 626a124fe3eSDavid Howells rxrpc_transmit_rotate, 627a124fe3eSDavid Howells rxrpc_transmit_end, 628a124fe3eSDavid Howells rxrpc_transmit__nr_trace 629a124fe3eSDavid Howells }; 630a124fe3eSDavid Howells 631a124fe3eSDavid Howells extern const char rxrpc_transmit_traces[rxrpc_transmit__nr_trace][4]; 632a124fe3eSDavid Howells 63358dc63c9SDavid Howells enum rxrpc_receive_trace { 63458dc63c9SDavid Howells rxrpc_receive_incoming, 63558dc63c9SDavid Howells rxrpc_receive_queue, 63658dc63c9SDavid Howells rxrpc_receive_queue_last, 63758dc63c9SDavid Howells rxrpc_receive_front, 63858dc63c9SDavid Howells rxrpc_receive_rotate, 63958dc63c9SDavid Howells rxrpc_receive_end, 64058dc63c9SDavid Howells rxrpc_receive__nr_trace 64158dc63c9SDavid Howells }; 64258dc63c9SDavid Howells 64358dc63c9SDavid Howells extern const char rxrpc_receive_traces[rxrpc_receive__nr_trace][4]; 64458dc63c9SDavid Howells 64584997905SDavid Howells enum rxrpc_recvmsg_trace { 64684997905SDavid Howells rxrpc_recvmsg_enter, 64784997905SDavid Howells rxrpc_recvmsg_wait, 64884997905SDavid Howells rxrpc_recvmsg_dequeue, 64984997905SDavid Howells rxrpc_recvmsg_hole, 65084997905SDavid Howells rxrpc_recvmsg_next, 65184997905SDavid Howells rxrpc_recvmsg_cont, 65284997905SDavid Howells rxrpc_recvmsg_full, 65384997905SDavid Howells rxrpc_recvmsg_data_return, 65484997905SDavid Howells rxrpc_recvmsg_terminal, 65584997905SDavid Howells rxrpc_recvmsg_to_be_accepted, 65684997905SDavid Howells rxrpc_recvmsg_return, 65784997905SDavid Howells rxrpc_recvmsg__nr_trace 65884997905SDavid Howells }; 65984997905SDavid Howells 66084997905SDavid Howells extern const char rxrpc_recvmsg_traces[rxrpc_recvmsg__nr_trace][5]; 66184997905SDavid Howells 662cf1a6474SDavid Howells enum rxrpc_rtt_tx_trace { 663cf1a6474SDavid Howells rxrpc_rtt_tx_ping, 66450235c4bSDavid Howells rxrpc_rtt_tx_data, 665cf1a6474SDavid Howells rxrpc_rtt_tx__nr_trace 666cf1a6474SDavid Howells }; 667cf1a6474SDavid Howells 668cf1a6474SDavid Howells extern const char rxrpc_rtt_tx_traces[rxrpc_rtt_tx__nr_trace][5]; 669cf1a6474SDavid Howells 670cf1a6474SDavid Howells enum rxrpc_rtt_rx_trace { 671cf1a6474SDavid Howells rxrpc_rtt_rx_ping_response, 67250235c4bSDavid Howells rxrpc_rtt_rx_requested_ack, 673cf1a6474SDavid Howells rxrpc_rtt_rx__nr_trace 674cf1a6474SDavid Howells }; 675cf1a6474SDavid Howells 676cf1a6474SDavid Howells extern const char rxrpc_rtt_rx_traces[rxrpc_rtt_rx__nr_trace][5]; 677cf1a6474SDavid Howells 678a3868bfcSDavid Howells extern const char *const rxrpc_pkts[]; 679a3868bfcSDavid Howells extern const char *rxrpc_acks(u8 reason); 680a3868bfcSDavid Howells 681df844fd4SDavid Howells #include <trace/events/rxrpc.h> 682df844fd4SDavid Howells 68317926a79SDavid Howells /* 684651350d1SDavid Howells * af_rxrpc.c 68517926a79SDavid Howells */ 68671f3ca40SDavid Howells extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs; 6870d12f8a4SDavid Howells extern u32 rxrpc_epoch; 688651350d1SDavid Howells extern atomic_t rxrpc_debug_id; 689651350d1SDavid Howells extern struct workqueue_struct *rxrpc_workqueue; 69017926a79SDavid Howells 69117926a79SDavid Howells /* 6920d81a51aSDavid Howells * call_accept.c 69317926a79SDavid Howells */ 69400e90712SDavid Howells int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); 69500e90712SDavid Howells void rxrpc_discard_prealloc(struct rxrpc_sock *); 696248f219cSDavid Howells struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *, 697248f219cSDavid Howells struct rxrpc_connection *, 698248f219cSDavid Howells struct sk_buff *); 6994f95dd78SDavid Howells void rxrpc_accept_incoming_calls(struct rxrpc_local *); 700d001648eSDavid Howells struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long, 701d001648eSDavid Howells rxrpc_notify_rx_t); 702c1b1203dSJoe Perches int rxrpc_reject_call(struct rxrpc_sock *); 70317926a79SDavid Howells 70417926a79SDavid Howells /* 7050d81a51aSDavid Howells * call_event.c 70617926a79SDavid Howells */ 707dfc3da44SDavid Howells void rxrpc_set_timer(struct rxrpc_call *); 708248f219cSDavid Howells void rxrpc_propose_ACK(struct rxrpc_call *, u8, u16, u32, bool, bool); 709c1b1203dSJoe Perches void rxrpc_process_call(struct work_struct *); 71017926a79SDavid Howells 71117926a79SDavid Howells /* 7120d81a51aSDavid Howells * call_object.c 71317926a79SDavid Howells */ 714f5c17aaeSDavid Howells extern const char *const rxrpc_call_states[]; 715f5c17aaeSDavid Howells extern const char *const rxrpc_call_completions[]; 716dad8aff7SDavid Howells extern unsigned int rxrpc_max_call_lifetime; 71717926a79SDavid Howells extern struct kmem_cache *rxrpc_call_jar; 71817926a79SDavid Howells extern struct list_head rxrpc_calls; 71917926a79SDavid Howells extern rwlock_t rxrpc_call_lock; 72017926a79SDavid Howells 7212341e077SDavid Howells struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); 72200e90712SDavid Howells struct rxrpc_call *rxrpc_alloc_call(gfp_t); 7232341e077SDavid Howells struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, 72419ffa01cSDavid Howells struct rxrpc_conn_parameters *, 725999b69f8SDavid Howells struct sockaddr_rxrpc *, 7262341e077SDavid Howells unsigned long, gfp_t); 727248f219cSDavid Howells void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, 72842886ffeSDavid Howells struct sk_buff *); 7298d94aa38SDavid Howells void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); 730c1b1203dSJoe Perches void rxrpc_release_calls_on_socket(struct rxrpc_sock *); 7318d94aa38SDavid Howells bool __rxrpc_queue_call(struct rxrpc_call *); 7328d94aa38SDavid Howells bool rxrpc_queue_call(struct rxrpc_call *); 733e34d4234SDavid Howells void rxrpc_see_call(struct rxrpc_call *); 734fff72429SDavid Howells void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 735fff72429SDavid Howells void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); 73600e90712SDavid Howells void rxrpc_cleanup_call(struct rxrpc_call *); 737c1b1203dSJoe Perches void __exit rxrpc_destroy_all_calls(void); 73817926a79SDavid Howells 739dabe5a79SDavid Howells static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) 740dabe5a79SDavid Howells { 741dabe5a79SDavid Howells return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); 742dabe5a79SDavid Howells } 743dabe5a79SDavid Howells 744dabe5a79SDavid Howells static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) 745dabe5a79SDavid Howells { 746dabe5a79SDavid Howells return !rxrpc_is_service_call(call); 747dabe5a79SDavid Howells } 748dabe5a79SDavid Howells 74917926a79SDavid Howells /* 750f5c17aaeSDavid Howells * Transition a call to the complete state. 751f5c17aaeSDavid Howells */ 752f5c17aaeSDavid Howells static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call, 753f5c17aaeSDavid Howells enum rxrpc_call_completion compl, 754f5c17aaeSDavid Howells u32 abort_code, 755f5c17aaeSDavid Howells int error) 756f5c17aaeSDavid Howells { 757f5c17aaeSDavid Howells if (call->state < RXRPC_CALL_COMPLETE) { 758f5c17aaeSDavid Howells call->abort_code = abort_code; 759f5c17aaeSDavid Howells call->error = error; 760f5c17aaeSDavid Howells call->completion = compl, 761f5c17aaeSDavid Howells call->state = RXRPC_CALL_COMPLETE; 762c0d058c2SDavid Howells wake_up(&call->waitq); 763f5c17aaeSDavid Howells return true; 764f5c17aaeSDavid Howells } 765f5c17aaeSDavid Howells return false; 766f5c17aaeSDavid Howells } 767f5c17aaeSDavid Howells 768f5c17aaeSDavid Howells static inline bool rxrpc_set_call_completion(struct rxrpc_call *call, 769f5c17aaeSDavid Howells enum rxrpc_call_completion compl, 770f5c17aaeSDavid Howells u32 abort_code, 771f5c17aaeSDavid Howells int error) 772f5c17aaeSDavid Howells { 773e8d6bbb0SDavid Howells bool ret; 774f5c17aaeSDavid Howells 775f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 776f5c17aaeSDavid Howells ret = __rxrpc_set_call_completion(call, compl, abort_code, error); 777f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 778f5c17aaeSDavid Howells return ret; 779f5c17aaeSDavid Howells } 780f5c17aaeSDavid Howells 781f5c17aaeSDavid Howells /* 782f5c17aaeSDavid Howells * Record that a call successfully completed. 783f5c17aaeSDavid Howells */ 784e8d6bbb0SDavid Howells static inline bool __rxrpc_call_completed(struct rxrpc_call *call) 785f5c17aaeSDavid Howells { 786e8d6bbb0SDavid Howells return __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0); 787f5c17aaeSDavid Howells } 788f5c17aaeSDavid Howells 789e8d6bbb0SDavid Howells static inline bool rxrpc_call_completed(struct rxrpc_call *call) 790f5c17aaeSDavid Howells { 791e8d6bbb0SDavid Howells bool ret; 792e8d6bbb0SDavid Howells 793f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 794e8d6bbb0SDavid Howells ret = __rxrpc_call_completed(call); 795f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 796e8d6bbb0SDavid Howells return ret; 797f5c17aaeSDavid Howells } 798f5c17aaeSDavid Howells 799f5c17aaeSDavid Howells /* 800f5c17aaeSDavid Howells * Record that a call is locally aborted. 801f5c17aaeSDavid Howells */ 8025a42976dSDavid Howells static inline bool __rxrpc_abort_call(const char *why, struct rxrpc_call *call, 8035a42976dSDavid Howells rxrpc_seq_t seq, 804f5c17aaeSDavid Howells u32 abort_code, int error) 805f5c17aaeSDavid Howells { 8065a42976dSDavid Howells trace_rxrpc_abort(why, call->cid, call->call_id, seq, 8075a42976dSDavid Howells abort_code, error); 808248f219cSDavid Howells return __rxrpc_set_call_completion(call, RXRPC_CALL_LOCALLY_ABORTED, 809248f219cSDavid Howells abort_code, error); 810f5c17aaeSDavid Howells } 811f5c17aaeSDavid Howells 8125a42976dSDavid Howells static inline bool rxrpc_abort_call(const char *why, struct rxrpc_call *call, 8135a42976dSDavid Howells rxrpc_seq_t seq, u32 abort_code, int error) 814f5c17aaeSDavid Howells { 815f5c17aaeSDavid Howells bool ret; 816f5c17aaeSDavid Howells 817f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 8185a42976dSDavid Howells ret = __rxrpc_abort_call(why, call, seq, abort_code, error); 819f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 820f5c17aaeSDavid Howells return ret; 821f5c17aaeSDavid Howells } 822f5c17aaeSDavid Howells 823f5c17aaeSDavid Howells /* 8244a3388c8SDavid Howells * conn_client.c 8254a3388c8SDavid Howells */ 82645025bceSDavid Howells extern unsigned int rxrpc_max_client_connections; 82745025bceSDavid Howells extern unsigned int rxrpc_reap_client_connections; 82845025bceSDavid Howells extern unsigned int rxrpc_conn_idle_client_expiry; 82945025bceSDavid Howells extern unsigned int rxrpc_conn_idle_client_fast_expiry; 8304a3388c8SDavid Howells extern struct idr rxrpc_client_conn_ids; 8314a3388c8SDavid Howells 832eb9b9d22SDavid Howells void rxrpc_destroy_client_conn_ids(void); 833c6d2b8d7SDavid Howells int rxrpc_connect_call(struct rxrpc_call *, struct rxrpc_conn_parameters *, 834c6d2b8d7SDavid Howells struct sockaddr_rxrpc *, gfp_t); 83545025bceSDavid Howells void rxrpc_expose_client_call(struct rxrpc_call *); 83645025bceSDavid Howells void rxrpc_disconnect_client_call(struct rxrpc_call *); 83745025bceSDavid Howells void rxrpc_put_client_conn(struct rxrpc_connection *); 83845025bceSDavid Howells void __exit rxrpc_destroy_all_client_connections(void); 8394a3388c8SDavid Howells 8404a3388c8SDavid Howells /* 8410d81a51aSDavid Howells * conn_event.c 8420d81a51aSDavid Howells */ 8430d81a51aSDavid Howells void rxrpc_process_connection(struct work_struct *); 8440d81a51aSDavid Howells 8450d81a51aSDavid Howells /* 8460d81a51aSDavid Howells * conn_object.c 84717926a79SDavid Howells */ 848dad8aff7SDavid Howells extern unsigned int rxrpc_connection_expiry; 84917926a79SDavid Howells extern struct list_head rxrpc_connections; 8504d028b2cSDavid Howells extern struct list_head rxrpc_connection_proc_list; 85117926a79SDavid Howells extern rwlock_t rxrpc_connection_lock; 85217926a79SDavid Howells 8538496af50SDavid Howells int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 854c6d2b8d7SDavid Howells struct rxrpc_connection *rxrpc_alloc_connection(gfp_t); 8558496af50SDavid Howells struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *, 856aa390bbeSDavid Howells struct sk_buff *); 85745025bceSDavid Howells void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); 858999b69f8SDavid Howells void rxrpc_disconnect_call(struct rxrpc_call *); 85945025bceSDavid Howells void rxrpc_kill_connection(struct rxrpc_connection *); 860363deeabSDavid Howells bool rxrpc_queue_conn(struct rxrpc_connection *); 861363deeabSDavid Howells void rxrpc_see_connection(struct rxrpc_connection *); 862363deeabSDavid Howells void rxrpc_get_connection(struct rxrpc_connection *); 863363deeabSDavid Howells struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *); 864363deeabSDavid Howells void rxrpc_put_service_conn(struct rxrpc_connection *); 865c1b1203dSJoe Perches void __exit rxrpc_destroy_all_connections(void); 86617926a79SDavid Howells 86719ffa01cSDavid Howells static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) 86819ffa01cSDavid Howells { 86919ffa01cSDavid Howells return conn->out_clientflag; 87019ffa01cSDavid Howells } 87119ffa01cSDavid Howells 87219ffa01cSDavid Howells static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) 87319ffa01cSDavid Howells { 874e8d70ce1SDavid Howells return !rxrpc_conn_is_client(conn); 87519ffa01cSDavid Howells } 87619ffa01cSDavid Howells 877f51b4480SDavid Howells static inline void rxrpc_put_connection(struct rxrpc_connection *conn) 878f51b4480SDavid Howells { 87945025bceSDavid Howells if (!conn) 88045025bceSDavid Howells return; 88145025bceSDavid Howells 882363deeabSDavid Howells if (rxrpc_conn_is_client(conn)) 88345025bceSDavid Howells rxrpc_put_client_conn(conn); 884363deeabSDavid Howells else 885363deeabSDavid Howells rxrpc_put_service_conn(conn); 8865acbee46SDavid Howells } 8875acbee46SDavid Howells 88817926a79SDavid Howells /* 8897877a4a4SDavid Howells * conn_service.c 8907877a4a4SDavid Howells */ 8918496af50SDavid Howells struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, 8928496af50SDavid Howells struct sk_buff *); 89300e90712SDavid Howells struct rxrpc_connection *rxrpc_prealloc_service_connection(gfp_t); 894248f219cSDavid Howells void rxrpc_new_incoming_connection(struct rxrpc_connection *, struct sk_buff *); 895001c1122SDavid Howells void rxrpc_unpublish_service_conn(struct rxrpc_connection *); 8967877a4a4SDavid Howells 8977877a4a4SDavid Howells /* 8980d81a51aSDavid Howells * input.c 89917926a79SDavid Howells */ 900676d2369SDavid S. Miller void rxrpc_data_ready(struct sock *); 90117926a79SDavid Howells 90217926a79SDavid Howells /* 9030d81a51aSDavid Howells * insecure.c 90417926a79SDavid Howells */ 9050d81a51aSDavid Howells extern const struct rxrpc_security rxrpc_no_security; 90617926a79SDavid Howells 90717926a79SDavid Howells /* 9080d81a51aSDavid Howells * key.c 90917926a79SDavid Howells */ 91017926a79SDavid Howells extern struct key_type key_type_rxrpc; 91117926a79SDavid Howells extern struct key_type key_type_rxrpc_s; 91217926a79SDavid Howells 913c1b1203dSJoe Perches int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); 914c1b1203dSJoe Perches int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); 915c1b1203dSJoe Perches int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time_t, 916c1b1203dSJoe Perches u32); 91717926a79SDavid Howells 91817926a79SDavid Howells /* 91987563616SDavid Howells * local_event.c 92087563616SDavid Howells */ 9214f95dd78SDavid Howells extern void rxrpc_process_local_events(struct rxrpc_local *); 92287563616SDavid Howells 92387563616SDavid Howells /* 9240d81a51aSDavid Howells * local_object.c 92517926a79SDavid Howells */ 9264f95dd78SDavid Howells struct rxrpc_local *rxrpc_lookup_local(const struct sockaddr_rxrpc *); 9274f95dd78SDavid Howells void __rxrpc_put_local(struct rxrpc_local *); 9280d81a51aSDavid Howells void __exit rxrpc_destroy_all_locals(void); 929e0e4d82fSDavid Howells 9304f95dd78SDavid Howells static inline void rxrpc_get_local(struct rxrpc_local *local) 9314f95dd78SDavid Howells { 9324f95dd78SDavid Howells atomic_inc(&local->usage); 9334f95dd78SDavid Howells } 9344f95dd78SDavid Howells 9354f95dd78SDavid Howells static inline 9364f95dd78SDavid Howells struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *local) 9374f95dd78SDavid Howells { 9384f95dd78SDavid Howells return atomic_inc_not_zero(&local->usage) ? local : NULL; 9394f95dd78SDavid Howells } 9404f95dd78SDavid Howells 9414f95dd78SDavid Howells static inline void rxrpc_put_local(struct rxrpc_local *local) 9424f95dd78SDavid Howells { 9435627cc8bSDavid Howells if (local && atomic_dec_and_test(&local->usage)) 9444f95dd78SDavid Howells __rxrpc_put_local(local); 9454f95dd78SDavid Howells } 9464f95dd78SDavid Howells 9475acbee46SDavid Howells static inline void rxrpc_queue_local(struct rxrpc_local *local) 9485acbee46SDavid Howells { 9495acbee46SDavid Howells rxrpc_queue_work(&local->processor); 9505acbee46SDavid Howells } 9515acbee46SDavid Howells 952e0e4d82fSDavid Howells /* 9538e688d9cSDavid Howells * misc.c 9548e688d9cSDavid Howells */ 9550e119b41SDavid Howells extern unsigned int rxrpc_max_backlog __read_mostly; 9568e688d9cSDavid Howells extern unsigned int rxrpc_requested_ack_delay; 9578e688d9cSDavid Howells extern unsigned int rxrpc_soft_ack_delay; 9588e688d9cSDavid Howells extern unsigned int rxrpc_idle_ack_delay; 9598e688d9cSDavid Howells extern unsigned int rxrpc_rx_window_size; 9608e688d9cSDavid Howells extern unsigned int rxrpc_rx_mtu; 9618e688d9cSDavid Howells extern unsigned int rxrpc_rx_jumbo_max; 9620b58b8a1SDavid Howells extern unsigned int rxrpc_resend_timeout; 9638e688d9cSDavid Howells 9648e688d9cSDavid Howells extern const s8 rxrpc_ack_priority[]; 9658e688d9cSDavid Howells 9668e688d9cSDavid Howells /* 9670d81a51aSDavid Howells * output.c 9680d81a51aSDavid Howells */ 9698d94aa38SDavid Howells int rxrpc_send_call_packet(struct rxrpc_call *, u8); 9705a924b89SDavid Howells int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *); 971248f219cSDavid Howells void rxrpc_reject_packets(struct rxrpc_local *); 9720d81a51aSDavid Howells 9730d81a51aSDavid Howells /* 974abe89ef0SDavid Howells * peer_event.c 9750d81a51aSDavid Howells */ 976abe89ef0SDavid Howells void rxrpc_error_report(struct sock *); 977f66d7490SDavid Howells void rxrpc_peer_error_distributor(struct work_struct *); 978cf1a6474SDavid Howells void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, 979cf1a6474SDavid Howells rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); 9800d81a51aSDavid Howells 9810d81a51aSDavid Howells /* 9820d81a51aSDavid Howells * peer_object.c 9830d81a51aSDavid Howells */ 984be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, 985be6e6707SDavid Howells const struct sockaddr_rxrpc *); 986be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *, 987be6e6707SDavid Howells struct sockaddr_rxrpc *, gfp_t); 988be6e6707SDavid Howells struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); 989248f219cSDavid Howells struct rxrpc_peer *rxrpc_lookup_incoming_peer(struct rxrpc_local *, 990248f219cSDavid Howells struct rxrpc_peer *); 991be6e6707SDavid Howells 992df5d8bf7SDavid Howells static inline struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *peer) 993be6e6707SDavid Howells { 994be6e6707SDavid Howells atomic_inc(&peer->usage); 995df5d8bf7SDavid Howells return peer; 996be6e6707SDavid Howells } 997be6e6707SDavid Howells 998be6e6707SDavid Howells static inline 999be6e6707SDavid Howells struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *peer) 1000be6e6707SDavid Howells { 1001be6e6707SDavid Howells return atomic_inc_not_zero(&peer->usage) ? peer : NULL; 1002be6e6707SDavid Howells } 1003be6e6707SDavid Howells 1004be6e6707SDavid Howells extern void __rxrpc_put_peer(struct rxrpc_peer *peer); 1005be6e6707SDavid Howells static inline void rxrpc_put_peer(struct rxrpc_peer *peer) 1006be6e6707SDavid Howells { 10075627cc8bSDavid Howells if (peer && atomic_dec_and_test(&peer->usage)) 1008be6e6707SDavid Howells __rxrpc_put_peer(peer); 1009be6e6707SDavid Howells } 10100d81a51aSDavid Howells 10110d81a51aSDavid Howells /* 10120d81a51aSDavid Howells * proc.c 10130d81a51aSDavid Howells */ 10140d81a51aSDavid Howells extern const struct file_operations rxrpc_call_seq_fops; 10150d81a51aSDavid Howells extern const struct file_operations rxrpc_connection_seq_fops; 10160d81a51aSDavid Howells 10170d81a51aSDavid Howells /* 10180d81a51aSDavid Howells * recvmsg.c 10190d81a51aSDavid Howells */ 1020248f219cSDavid Howells void rxrpc_notify_socket(struct rxrpc_call *); 10210d81a51aSDavid Howells int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); 10220d81a51aSDavid Howells 10230d81a51aSDavid Howells /* 1024648af7fcSDavid Howells * rxkad.c 1025648af7fcSDavid Howells */ 1026648af7fcSDavid Howells #ifdef CONFIG_RXKAD 1027648af7fcSDavid Howells extern const struct rxrpc_security rxkad; 1028648af7fcSDavid Howells #endif 1029648af7fcSDavid Howells 1030648af7fcSDavid Howells /* 10310d81a51aSDavid Howells * security.c 10320d81a51aSDavid Howells */ 10330d81a51aSDavid Howells int __init rxrpc_init_security(void); 10340d81a51aSDavid Howells void rxrpc_exit_security(void); 10350d81a51aSDavid Howells int rxrpc_init_client_conn_security(struct rxrpc_connection *); 10360d81a51aSDavid Howells int rxrpc_init_server_conn_security(struct rxrpc_connection *); 10370d81a51aSDavid Howells 10380d81a51aSDavid Howells /* 10390b58b8a1SDavid Howells * sendmsg.c 10400b58b8a1SDavid Howells */ 10410b58b8a1SDavid Howells int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); 10420b58b8a1SDavid Howells 10430b58b8a1SDavid Howells /* 10440d81a51aSDavid Howells * skbuff.c 10450d81a51aSDavid Howells */ 1046d001648eSDavid Howells void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); 10470d81a51aSDavid Howells void rxrpc_packet_destructor(struct sk_buff *); 104871f3ca40SDavid Howells void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); 104971f3ca40SDavid Howells void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); 105071f3ca40SDavid Howells void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); 105171f3ca40SDavid Howells void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); 105271f3ca40SDavid Howells void rxrpc_lose_skb(struct sk_buff *, enum rxrpc_skb_trace); 1053df844fd4SDavid Howells void rxrpc_purge_queue(struct sk_buff_head *); 10540d81a51aSDavid Howells 10550d81a51aSDavid Howells /* 10565873c083SDavid Howells * sysctl.c 10575873c083SDavid Howells */ 10585873c083SDavid Howells #ifdef CONFIG_SYSCTL 10595873c083SDavid Howells extern int __init rxrpc_sysctl_init(void); 10605873c083SDavid Howells extern void rxrpc_sysctl_exit(void); 10615873c083SDavid Howells #else 10625873c083SDavid Howells static inline int __init rxrpc_sysctl_init(void) { return 0; } 10635873c083SDavid Howells static inline void rxrpc_sysctl_exit(void) {} 10645873c083SDavid Howells #endif 10655873c083SDavid Howells 10665873c083SDavid Howells /* 1067be6e6707SDavid Howells * utils.c 1068be6e6707SDavid Howells */ 1069d991b4a3SDavid Howells int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 1070be6e6707SDavid Howells 1071248f219cSDavid Howells static inline bool before(u32 seq1, u32 seq2) 1072248f219cSDavid Howells { 1073248f219cSDavid Howells return (s32)(seq1 - seq2) < 0; 1074248f219cSDavid Howells } 1075248f219cSDavid Howells static inline bool before_eq(u32 seq1, u32 seq2) 1076248f219cSDavid Howells { 1077248f219cSDavid Howells return (s32)(seq1 - seq2) <= 0; 1078248f219cSDavid Howells } 1079248f219cSDavid Howells static inline bool after(u32 seq1, u32 seq2) 1080248f219cSDavid Howells { 1081248f219cSDavid Howells return (s32)(seq1 - seq2) > 0; 1082248f219cSDavid Howells } 1083248f219cSDavid Howells static inline bool after_eq(u32 seq1, u32 seq2) 1084248f219cSDavid Howells { 1085248f219cSDavid Howells return (s32)(seq1 - seq2) >= 0; 1086248f219cSDavid Howells } 1087248f219cSDavid Howells 1088be6e6707SDavid Howells /* 108917926a79SDavid Howells * debug tracing 109017926a79SDavid Howells */ 109195c96174SEric Dumazet extern unsigned int rxrpc_debug; 109217926a79SDavid Howells 109317926a79SDavid Howells #define dbgprintk(FMT,...) \ 10949f389f4bSSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 109517926a79SDavid Howells 10960dc47877SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 10970dc47877SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 109817926a79SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 109917926a79SDavid Howells #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) 110017926a79SDavid Howells #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) 110117926a79SDavid Howells 110217926a79SDavid Howells 110317926a79SDavid Howells #if defined(__KDEBUG) 110417926a79SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 110517926a79SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 110617926a79SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 110717926a79SDavid Howells #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) 110817926a79SDavid Howells #define _net(FMT,...) knet(FMT,##__VA_ARGS__) 110917926a79SDavid Howells 111017926a79SDavid Howells #elif defined(CONFIG_AF_RXRPC_DEBUG) 111117926a79SDavid Howells #define RXRPC_DEBUG_KENTER 0x01 111217926a79SDavid Howells #define RXRPC_DEBUG_KLEAVE 0x02 111317926a79SDavid Howells #define RXRPC_DEBUG_KDEBUG 0x04 111417926a79SDavid Howells #define RXRPC_DEBUG_KPROTO 0x08 111517926a79SDavid Howells #define RXRPC_DEBUG_KNET 0x10 111617926a79SDavid Howells 111717926a79SDavid Howells #define _enter(FMT,...) \ 111817926a79SDavid Howells do { \ 111917926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ 112017926a79SDavid Howells kenter(FMT,##__VA_ARGS__); \ 112117926a79SDavid Howells } while (0) 112217926a79SDavid Howells 112317926a79SDavid Howells #define _leave(FMT,...) \ 112417926a79SDavid Howells do { \ 112517926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ 112617926a79SDavid Howells kleave(FMT,##__VA_ARGS__); \ 112717926a79SDavid Howells } while (0) 112817926a79SDavid Howells 112917926a79SDavid Howells #define _debug(FMT,...) \ 113017926a79SDavid Howells do { \ 113117926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ 113217926a79SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 113317926a79SDavid Howells } while (0) 113417926a79SDavid Howells 113517926a79SDavid Howells #define _proto(FMT,...) \ 113617926a79SDavid Howells do { \ 113717926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ 113817926a79SDavid Howells kproto(FMT,##__VA_ARGS__); \ 113917926a79SDavid Howells } while (0) 114017926a79SDavid Howells 114117926a79SDavid Howells #define _net(FMT,...) \ 114217926a79SDavid Howells do { \ 114317926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ 114417926a79SDavid Howells knet(FMT,##__VA_ARGS__); \ 114517926a79SDavid Howells } while (0) 114617926a79SDavid Howells 114717926a79SDavid Howells #else 114812fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 114912fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 115012fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 115112fdff3fSDavid Howells #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) 115212fdff3fSDavid Howells #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) 115317926a79SDavid Howells #endif 115417926a79SDavid Howells 115517926a79SDavid Howells /* 115617926a79SDavid Howells * debug assertion checking 115717926a79SDavid Howells */ 115817926a79SDavid Howells #if 1 // defined(__KDEBUGALL) 115917926a79SDavid Howells 116017926a79SDavid Howells #define ASSERT(X) \ 116117926a79SDavid Howells do { \ 116217926a79SDavid Howells if (unlikely(!(X))) { \ 11639b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 116417926a79SDavid Howells BUG(); \ 116517926a79SDavid Howells } \ 116617926a79SDavid Howells } while (0) 116717926a79SDavid Howells 116817926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 116917926a79SDavid Howells do { \ 1170cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1171cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 11729b6d5398SJoe Perches if (unlikely(!(_x OP _y))) { \ 11739b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1174cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1175cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 117617926a79SDavid Howells BUG(); \ 117717926a79SDavid Howells } \ 117817926a79SDavid Howells } while (0) 117917926a79SDavid Howells 118017926a79SDavid Howells #define ASSERTIF(C, X) \ 118117926a79SDavid Howells do { \ 118217926a79SDavid Howells if (unlikely((C) && !(X))) { \ 11839b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 118417926a79SDavid Howells BUG(); \ 118517926a79SDavid Howells } \ 118617926a79SDavid Howells } while (0) 118717926a79SDavid Howells 118817926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 118917926a79SDavid Howells do { \ 1190cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1191cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 11929b6d5398SJoe Perches if (unlikely((C) && !(_x OP _y))) { \ 11939b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1194cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1195cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 119617926a79SDavid Howells BUG(); \ 119717926a79SDavid Howells } \ 119817926a79SDavid Howells } while (0) 119917926a79SDavid Howells 120017926a79SDavid Howells #else 120117926a79SDavid Howells 120217926a79SDavid Howells #define ASSERT(X) \ 120317926a79SDavid Howells do { \ 120417926a79SDavid Howells } while (0) 120517926a79SDavid Howells 120617926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 120717926a79SDavid Howells do { \ 120817926a79SDavid Howells } while (0) 120917926a79SDavid Howells 121017926a79SDavid Howells #define ASSERTIF(C, X) \ 121117926a79SDavid Howells do { \ 121217926a79SDavid Howells } while (0) 121317926a79SDavid Howells 121417926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 121517926a79SDavid Howells do { \ 121617926a79SDavid Howells } while (0) 121717926a79SDavid Howells 121817926a79SDavid Howells #endif /* __KDEBUGALL */ 1219