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 */ 9600e90712SDavid Howells struct rxrpc_backlog *backlog; /* Preallocation for services */ 97248f219cSDavid Howells spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */ 98248f219cSDavid Howells struct list_head sock_calls; /* List of calls owned by this socket */ 99248f219cSDavid Howells struct list_head to_be_accepted; /* calls awaiting acceptance */ 100248f219cSDavid Howells struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */ 101248f219cSDavid Howells rwlock_t recvmsg_lock; /* Lock for recvmsg_q */ 10217926a79SDavid Howells struct key *key; /* security for this socket */ 10317926a79SDavid Howells struct key *securities; /* list of server security descriptors */ 10400e90712SDavid Howells struct rb_root calls; /* User ID -> call mapping */ 10517926a79SDavid Howells unsigned long flags; 1062341e077SDavid Howells #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ 10717926a79SDavid Howells rwlock_t call_lock; /* lock for calls */ 10817926a79SDavid Howells u32 min_sec_level; /* minimum security level */ 10917926a79SDavid Howells #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT 110cc8feb8eSDavid Howells bool exclusive; /* Exclusive connection for a client socket */ 111cc8feb8eSDavid Howells sa_family_t family; /* Protocol family created with */ 11217926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 1132341e077SDavid Howells struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ 11417926a79SDavid Howells }; 11517926a79SDavid Howells 11617926a79SDavid Howells #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) 11717926a79SDavid Howells 11817926a79SDavid Howells /* 1190d12f8a4SDavid Howells * CPU-byteorder normalised Rx packet header. 1200d12f8a4SDavid Howells */ 1210d12f8a4SDavid Howells struct rxrpc_host_header { 1220d12f8a4SDavid Howells u32 epoch; /* client boot timestamp */ 1230d12f8a4SDavid Howells u32 cid; /* connection and channel ID */ 1240d12f8a4SDavid Howells u32 callNumber; /* call ID (0 for connection-level packets) */ 1250d12f8a4SDavid Howells u32 seq; /* sequence number of pkt in call stream */ 1260d12f8a4SDavid Howells u32 serial; /* serial number of pkt sent to network */ 1270d12f8a4SDavid Howells u8 type; /* packet type */ 1280d12f8a4SDavid Howells u8 flags; /* packet flags */ 1290d12f8a4SDavid Howells u8 userStatus; /* app-layer defined status */ 1300d12f8a4SDavid Howells u8 securityIndex; /* security protocol ID */ 1310d12f8a4SDavid Howells union { 1320d12f8a4SDavid Howells u16 _rsvd; /* reserved */ 1330d12f8a4SDavid Howells u16 cksum; /* kerberos security checksum */ 1340d12f8a4SDavid Howells }; 1350d12f8a4SDavid Howells u16 serviceId; /* service ID */ 1360d12f8a4SDavid Howells } __packed; 1370d12f8a4SDavid Howells 1380d12f8a4SDavid Howells /* 13917926a79SDavid Howells * RxRPC socket buffer private variables 14017926a79SDavid Howells * - max 48 bytes (struct sk_buff::cb) 14117926a79SDavid Howells */ 14217926a79SDavid Howells struct rxrpc_skb_priv { 143248f219cSDavid Howells union { 144248f219cSDavid Howells u8 nr_jumbo; /* Number of jumbo subpackets */ 145248f219cSDavid Howells }; 14617926a79SDavid Howells union { 14795c96174SEric Dumazet unsigned int offset; /* offset into buffer of next read */ 14817926a79SDavid Howells int remain; /* amount of space remaining for next write */ 14917926a79SDavid Howells u32 error; /* network error code */ 15017926a79SDavid Howells }; 15117926a79SDavid Howells 1520d12f8a4SDavid Howells struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ 15317926a79SDavid Howells }; 15417926a79SDavid Howells 15517926a79SDavid Howells #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) 15617926a79SDavid Howells 15717926a79SDavid Howells /* 15817926a79SDavid Howells * RxRPC security module interface 15917926a79SDavid Howells */ 16017926a79SDavid Howells struct rxrpc_security { 16117926a79SDavid Howells const char *name; /* name of this service */ 16217926a79SDavid Howells u8 security_index; /* security type provided */ 16317926a79SDavid Howells 164648af7fcSDavid Howells /* Initialise a security service */ 165648af7fcSDavid Howells int (*init)(void); 166648af7fcSDavid Howells 167648af7fcSDavid Howells /* Clean up a security service */ 168648af7fcSDavid Howells void (*exit)(void); 169648af7fcSDavid Howells 17017926a79SDavid Howells /* initialise a connection's security */ 17117926a79SDavid Howells int (*init_connection_security)(struct rxrpc_connection *); 17217926a79SDavid Howells 17317926a79SDavid Howells /* prime a connection's packet security */ 174a263629dSHerbert Xu int (*prime_packet_security)(struct rxrpc_connection *); 17517926a79SDavid Howells 17617926a79SDavid Howells /* impose security on a packet */ 177a263629dSHerbert Xu int (*secure_packet)(struct rxrpc_call *, 17817926a79SDavid Howells struct sk_buff *, 17917926a79SDavid Howells size_t, 18017926a79SDavid Howells void *); 18117926a79SDavid Howells 18217926a79SDavid Howells /* verify the security on a received packet */ 1835a42976dSDavid Howells int (*verify_packet)(struct rxrpc_call *, struct sk_buff *, 184248f219cSDavid Howells unsigned int, unsigned int, rxrpc_seq_t, u16); 185248f219cSDavid Howells 186248f219cSDavid Howells /* Locate the data in a received packet that has been verified. */ 187248f219cSDavid Howells void (*locate_data)(struct rxrpc_call *, struct sk_buff *, 188248f219cSDavid Howells unsigned int *, unsigned int *); 18917926a79SDavid Howells 19017926a79SDavid Howells /* issue a challenge */ 19117926a79SDavid Howells int (*issue_challenge)(struct rxrpc_connection *); 19217926a79SDavid Howells 19317926a79SDavid Howells /* respond to a challenge */ 19417926a79SDavid Howells int (*respond_to_challenge)(struct rxrpc_connection *, 19517926a79SDavid Howells struct sk_buff *, 19617926a79SDavid Howells u32 *); 19717926a79SDavid Howells 19817926a79SDavid Howells /* verify a response */ 19917926a79SDavid Howells int (*verify_response)(struct rxrpc_connection *, 20017926a79SDavid Howells struct sk_buff *, 20117926a79SDavid Howells u32 *); 20217926a79SDavid Howells 20317926a79SDavid Howells /* clear connection security */ 20417926a79SDavid Howells void (*clear)(struct rxrpc_connection *); 20517926a79SDavid Howells }; 20617926a79SDavid Howells 20717926a79SDavid Howells /* 2084f95dd78SDavid Howells * RxRPC local transport endpoint description 2094f95dd78SDavid Howells * - owned by a single AF_RXRPC socket 2104f95dd78SDavid Howells * - pointed to by transport socket struct sk_user_data 21117926a79SDavid Howells */ 21217926a79SDavid Howells struct rxrpc_local { 2134f95dd78SDavid Howells struct rcu_head rcu; 2144f95dd78SDavid Howells atomic_t usage; 2154f95dd78SDavid Howells struct list_head link; 21617926a79SDavid Howells struct socket *socket; /* my UDP socket */ 2174f95dd78SDavid Howells struct work_struct processor; 2181e9e5c95SDavid Howells struct rxrpc_sock __rcu *service; /* Service(s) listening on this endpoint */ 21917926a79SDavid Howells struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ 22017926a79SDavid Howells struct sk_buff_head reject_queue; /* packets awaiting rejection */ 22144ba0698SDavid Howells struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */ 222999b69f8SDavid Howells struct rb_root client_conns; /* Client connections by socket params */ 223999b69f8SDavid Howells spinlock_t client_conns_lock; /* Lock for client_conns */ 22417926a79SDavid Howells spinlock_t lock; /* access lock */ 22517926a79SDavid Howells rwlock_t services_lock; /* lock for services list */ 22617926a79SDavid Howells int debug_id; /* debug ID for printks */ 2274f95dd78SDavid Howells bool dead; 22817926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 22917926a79SDavid Howells }; 23017926a79SDavid Howells 23117926a79SDavid Howells /* 23217926a79SDavid Howells * RxRPC remote transport endpoint definition 233be6e6707SDavid Howells * - matched by local endpoint, remote port, address and protocol type 23417926a79SDavid Howells */ 23517926a79SDavid Howells struct rxrpc_peer { 236be6e6707SDavid Howells struct rcu_head rcu; /* This must be first */ 237be6e6707SDavid Howells atomic_t usage; 238be6e6707SDavid Howells unsigned long hash_key; 239be6e6707SDavid Howells struct hlist_node hash_link; 240be6e6707SDavid Howells struct rxrpc_local *local; 241f66d7490SDavid Howells struct hlist_head error_targets; /* targets for net error distribution */ 242f66d7490SDavid Howells struct work_struct error_distributor; 243aa390bbeSDavid Howells struct rb_root service_conns; /* Service connections */ 2448496af50SDavid Howells seqlock_t service_conn_lock; 24517926a79SDavid Howells spinlock_t lock; /* access lock */ 24695c96174SEric Dumazet unsigned int if_mtu; /* interface MTU for this peer */ 24795c96174SEric Dumazet unsigned int mtu; /* network MTU for this peer */ 24895c96174SEric Dumazet unsigned int maxdata; /* data size (MTU - hdrsize) */ 24917926a79SDavid Howells unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ 25017926a79SDavid Howells int debug_id; /* debug ID for printks */ 251f66d7490SDavid Howells int error_report; /* Net (+0) or local (+1000000) to distribute */ 252f66d7490SDavid Howells #define RXRPC_LOCAL_ERROR_OFFSET 1000000 25317926a79SDavid Howells struct sockaddr_rxrpc srx; /* remote address */ 25417926a79SDavid Howells 25517926a79SDavid Howells /* calculated RTT cache */ 25617926a79SDavid Howells #define RXRPC_RTT_CACHE_SIZE 32 2570d4b103cSDavid Howells ktime_t rtt_last_req; /* Time of last RTT request */ 258cf1a6474SDavid Howells u64 rtt; /* Current RTT estimate (in nS) */ 259cf1a6474SDavid Howells u64 rtt_sum; /* Sum of cache contents */ 260cf1a6474SDavid Howells u64 rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* Determined RTT cache */ 261cf1a6474SDavid Howells u8 rtt_cursor; /* next entry at which to insert */ 262cf1a6474SDavid Howells u8 rtt_usage; /* amount of cache actually used */ 26317926a79SDavid Howells }; 26417926a79SDavid Howells 26517926a79SDavid Howells /* 26619ffa01cSDavid Howells * Keys for matching a connection. 26719ffa01cSDavid Howells */ 26819ffa01cSDavid Howells struct rxrpc_conn_proto { 269e8d70ce1SDavid Howells union { 270e8d70ce1SDavid Howells struct { 27119ffa01cSDavid Howells u32 epoch; /* epoch of this connection */ 27219ffa01cSDavid Howells u32 cid; /* connection ID */ 273e8d70ce1SDavid Howells }; 274e8d70ce1SDavid Howells u64 index_key; 27519ffa01cSDavid Howells }; 27619ffa01cSDavid Howells }; 27719ffa01cSDavid Howells 27819ffa01cSDavid Howells struct rxrpc_conn_parameters { 27919ffa01cSDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 28019ffa01cSDavid Howells struct rxrpc_peer *peer; /* Remote endpoint */ 28119ffa01cSDavid Howells struct key *key; /* Security details */ 28219ffa01cSDavid Howells bool exclusive; /* T if conn is exclusive */ 28319ffa01cSDavid Howells u16 service_id; /* Service ID for this connection */ 28419ffa01cSDavid Howells u32 security_level; /* Security level selected */ 28519ffa01cSDavid Howells }; 28619ffa01cSDavid Howells 28719ffa01cSDavid Howells /* 288bba304dbSDavid Howells * Bits in the connection flags. 289bba304dbSDavid Howells */ 290bba304dbSDavid Howells enum rxrpc_conn_flag { 291bba304dbSDavid Howells RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ 292001c1122SDavid Howells RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ 293001c1122SDavid Howells RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */ 29445025bceSDavid Howells RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */ 29545025bceSDavid Howells RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ 29645025bceSDavid Howells RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */ 297bba304dbSDavid Howells }; 298bba304dbSDavid Howells 299bba304dbSDavid Howells /* 300bba304dbSDavid Howells * Events that can be raised upon a connection. 301bba304dbSDavid Howells */ 302bba304dbSDavid Howells enum rxrpc_conn_event { 303bba304dbSDavid Howells RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ 304bba304dbSDavid Howells }; 305bba304dbSDavid Howells 306bba304dbSDavid Howells /* 30745025bceSDavid Howells * The connection cache state. 30845025bceSDavid Howells */ 30945025bceSDavid Howells enum rxrpc_conn_cache_state { 31045025bceSDavid Howells RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */ 31145025bceSDavid Howells RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */ 31245025bceSDavid Howells RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */ 31345025bceSDavid Howells RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */ 31445025bceSDavid Howells RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */ 315363deeabSDavid Howells RXRPC_CONN__NR_CACHE_STATES 31645025bceSDavid Howells }; 31745025bceSDavid Howells 31845025bceSDavid Howells /* 319bba304dbSDavid Howells * The connection protocol state. 320bba304dbSDavid Howells */ 321bba304dbSDavid Howells enum rxrpc_conn_proto_state { 322bba304dbSDavid Howells RXRPC_CONN_UNUSED, /* Connection not yet attempted */ 323bba304dbSDavid Howells RXRPC_CONN_CLIENT, /* Client connection */ 32400e90712SDavid Howells RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ 325bba304dbSDavid Howells RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ 326bba304dbSDavid Howells RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ 327bba304dbSDavid Howells RXRPC_CONN_SERVICE, /* Service secured connection */ 328bba304dbSDavid Howells RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */ 329bba304dbSDavid Howells RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */ 330bba304dbSDavid Howells RXRPC_CONN__NR_STATES 331bba304dbSDavid Howells }; 332bba304dbSDavid Howells 333bba304dbSDavid Howells /* 33417926a79SDavid Howells * RxRPC connection definition 335aa390bbeSDavid Howells * - matched by { local, peer, epoch, conn_id, direction } 33617926a79SDavid Howells * - each connection can only handle four simultaneous calls 33717926a79SDavid Howells */ 33817926a79SDavid Howells struct rxrpc_connection { 33919ffa01cSDavid Howells struct rxrpc_conn_proto proto; 34019ffa01cSDavid Howells struct rxrpc_conn_parameters params; 34119ffa01cSDavid Howells 34245025bceSDavid Howells atomic_t usage; 34345025bceSDavid Howells struct rcu_head rcu; 34445025bceSDavid Howells struct list_head cache_link; 345a1399f8bSDavid Howells 34645025bceSDavid Howells spinlock_t channel_lock; 34745025bceSDavid Howells unsigned char active_chans; /* Mask of active channels */ 34845025bceSDavid Howells #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1) 34945025bceSDavid Howells struct list_head waiting_calls; /* Calls waiting for channels */ 350a1399f8bSDavid Howells struct rxrpc_channel { 351a1399f8bSDavid Howells struct rxrpc_call __rcu *call; /* Active call */ 352a1399f8bSDavid Howells u32 call_id; /* ID of current call */ 353a1399f8bSDavid Howells u32 call_counter; /* Call ID counter */ 354a1399f8bSDavid Howells u32 last_call; /* ID of last call */ 35518bfeba5SDavid Howells u8 last_type; /* Type of last packet */ 35618bfeba5SDavid Howells u16 last_service_id; 35718bfeba5SDavid Howells union { 35818bfeba5SDavid Howells u32 last_seq; 35918bfeba5SDavid Howells u32 last_abort; 36018bfeba5SDavid Howells }; 361a1399f8bSDavid Howells } channels[RXRPC_MAXCALLS]; 362999b69f8SDavid Howells 36317926a79SDavid Howells struct work_struct processor; /* connection event processor */ 364999b69f8SDavid Howells union { 365999b69f8SDavid Howells struct rb_node client_node; /* Node in local->client_conns */ 366aa390bbeSDavid Howells struct rb_node service_node; /* Node in peer->service_conns */ 367999b69f8SDavid Howells }; 3684d028b2cSDavid Howells struct list_head proc_link; /* link in procfs list */ 36917926a79SDavid Howells struct list_head link; /* link in master connection list */ 37017926a79SDavid Howells struct sk_buff_head rx_queue; /* received conn-level packets */ 371648af7fcSDavid Howells const struct rxrpc_security *security; /* applied security module */ 37217926a79SDavid Howells struct key *server_key; /* security for this service */ 3731afe593bSHerbert Xu struct crypto_skcipher *cipher; /* encryption handle */ 37417926a79SDavid Howells struct rxrpc_crypt csum_iv; /* packet checksum base */ 3754a3388c8SDavid Howells unsigned long flags; 37617926a79SDavid Howells unsigned long events; 377f51b4480SDavid Howells unsigned long idle_timestamp; /* Time at which last became idle */ 37817926a79SDavid Howells spinlock_t state_lock; /* state-change lock */ 379cf13258fSDavid Howells enum rxrpc_conn_cache_state cache_state; 380cf13258fSDavid Howells enum rxrpc_conn_proto_state state; /* current state of connection */ 381dc44b3a0SDavid Howells u32 local_abort; /* local abort code */ 382dc44b3a0SDavid Howells u32 remote_abort; /* remote abort code */ 38317926a79SDavid Howells int debug_id; /* debug ID for printks */ 38417926a79SDavid Howells atomic_t serial; /* packet serial number counter */ 385563ea7d5SDavid Howells unsigned int hi_serial; /* highest serial number received */ 38617926a79SDavid Howells u32 security_nonce; /* response re-use preventer */ 3875a924b89SDavid Howells u8 size_align; /* data size alignment (for security) */ 3885a924b89SDavid Howells u8 security_size; /* security header size */ 38917926a79SDavid Howells u8 security_ix; /* security type */ 39017926a79SDavid Howells u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ 39117926a79SDavid Howells }; 39217926a79SDavid Howells 39317926a79SDavid Howells /* 3945b8848d1SDavid Howells * Flags in call->flags. 3955b8848d1SDavid Howells */ 3965b8848d1SDavid Howells enum rxrpc_call_flag { 3975b8848d1SDavid Howells RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ 3985b8848d1SDavid Howells RXRPC_CALL_HAS_USERID, /* has a user ID attached */ 399dabe5a79SDavid Howells RXRPC_CALL_IS_SERVICE, /* Call is service call */ 40045025bceSDavid Howells RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ 401248f219cSDavid Howells RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ 402248f219cSDavid Howells RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ 4038e83134dSDavid Howells RXRPC_CALL_PINGING, /* Ping in process */ 40457494343SDavid Howells RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */ 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 /* 45057494343SDavid Howells * Call Tx congestion management modes. 45157494343SDavid Howells */ 45257494343SDavid Howells enum rxrpc_congest_mode { 45357494343SDavid Howells RXRPC_CALL_SLOW_START, 45457494343SDavid Howells RXRPC_CALL_CONGEST_AVOIDANCE, 45557494343SDavid Howells RXRPC_CALL_PACKET_LOSS, 45657494343SDavid Howells RXRPC_CALL_FAST_RETRANSMIT, 45757494343SDavid Howells NR__RXRPC_CONGEST_MODES 45857494343SDavid Howells }; 45957494343SDavid Howells 46057494343SDavid Howells /* 46117926a79SDavid Howells * RxRPC call definition 46217926a79SDavid Howells * - matched by { connection, call_id } 46317926a79SDavid Howells */ 46417926a79SDavid Howells struct rxrpc_call { 465dee46364SDavid Howells struct rcu_head rcu; 46617926a79SDavid Howells struct rxrpc_connection *conn; /* connection carrying call */ 467df5d8bf7SDavid Howells struct rxrpc_peer *peer; /* Peer record for remote address */ 4688d94aa38SDavid Howells struct rxrpc_sock __rcu *socket; /* socket responsible */ 469248f219cSDavid Howells unsigned long ack_at; /* When deferred ACK needs to happen */ 470248f219cSDavid Howells unsigned long resend_at; /* When next resend needs to happen */ 471248f219cSDavid Howells unsigned long expire_at; /* When the call times out */ 472248f219cSDavid Howells struct timer_list timer; /* Combined event timer */ 473248f219cSDavid Howells struct work_struct processor; /* Event processor */ 474d001648eSDavid Howells rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ 47517926a79SDavid Howells struct list_head link; /* link in master call list */ 47645025bceSDavid Howells struct list_head chan_wait_link; /* Link in conn->waiting_calls */ 477f66d7490SDavid Howells struct hlist_node error_link; /* link in error distribution list */ 478248f219cSDavid Howells struct list_head accept_link; /* Link in rx->acceptq */ 479248f219cSDavid Howells struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ 480248f219cSDavid Howells struct list_head sock_link; /* Link in rx->sock_calls */ 481248f219cSDavid Howells struct rb_node sock_node; /* Node in rx->calls */ 48217926a79SDavid Howells struct sk_buff *tx_pending; /* Tx socket buffer being filled */ 48345025bceSDavid Howells wait_queue_head_t waitq; /* Wait queue for channel or Tx */ 484a263629dSHerbert Xu __be32 crypto_buf[2]; /* Temporary packet crypto buffer */ 48517926a79SDavid Howells unsigned long user_call_ID; /* user-defined call ID */ 48617926a79SDavid Howells unsigned long flags; 48717926a79SDavid Howells unsigned long events; 48817926a79SDavid Howells spinlock_t lock; 48917926a79SDavid Howells rwlock_t state_lock; /* lock for state transition */ 490f5c17aaeSDavid Howells u32 abort_code; /* Local/remote abort code */ 491f5c17aaeSDavid Howells int error; /* Local error incurred */ 492cf13258fSDavid Howells enum rxrpc_call_state state; /* current state of call */ 493cf13258fSDavid Howells enum rxrpc_call_completion completion; /* Call completion condition */ 49417926a79SDavid Howells atomic_t usage; 495dabe5a79SDavid Howells u16 service_id; /* service ID */ 496278ac0cdSDavid Howells u8 security_ix; /* Security type */ 497dabe5a79SDavid Howells u32 call_id; /* call ID on connection */ 498dabe5a79SDavid Howells u32 cid; /* connection ID plus channel index */ 499dabe5a79SDavid Howells int debug_id; /* debug ID for printks */ 5008e83134dSDavid Howells unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ 5018e83134dSDavid Howells unsigned short rx_pkt_len; /* Current recvmsg packet len */ 50217926a79SDavid Howells 503248f219cSDavid Howells /* Rx/Tx circular buffer, depending on phase. 504248f219cSDavid Howells * 505248f219cSDavid Howells * In the Rx phase, packets are annotated with 0 or the number of the 506248f219cSDavid Howells * segment of a jumbo packet each buffer refers to. There can be up to 507248f219cSDavid Howells * 47 segments in a maximum-size UDP packet. 508248f219cSDavid Howells * 509248f219cSDavid Howells * In the Tx phase, packets are annotated with which buffers have been 510248f219cSDavid Howells * acked. 51117926a79SDavid Howells */ 512248f219cSDavid Howells #define RXRPC_RXTX_BUFF_SIZE 64 513248f219cSDavid Howells #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1) 51475e42126SDavid Howells #define RXRPC_INIT_RX_WINDOW_SIZE 32 515248f219cSDavid Howells struct sk_buff **rxtx_buffer; 516248f219cSDavid Howells u8 *rxtx_annotations; 517248f219cSDavid Howells #define RXRPC_TX_ANNO_ACK 0 518248f219cSDavid Howells #define RXRPC_TX_ANNO_UNACK 1 519248f219cSDavid Howells #define RXRPC_TX_ANNO_NAK 2 520248f219cSDavid Howells #define RXRPC_TX_ANNO_RETRANS 3 521f07373eaSDavid Howells #define RXRPC_TX_ANNO_MASK 0x03 52270790dbeSDavid Howells #define RXRPC_TX_ANNO_LAST 0x04 52370790dbeSDavid Howells #define RXRPC_TX_ANNO_RESENT 0x08 52470790dbeSDavid Howells 525248f219cSDavid Howells #define RXRPC_RX_ANNO_JUMBO 0x3f /* Jumbo subpacket number + 1 if not zero */ 526248f219cSDavid Howells #define RXRPC_RX_ANNO_JLAST 0x40 /* Set if last element of a jumbo packet */ 527248f219cSDavid Howells #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ 528248f219cSDavid Howells rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but 529248f219cSDavid Howells * not hard-ACK'd packet follows this. 530248f219cSDavid Howells */ 531248f219cSDavid Howells rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ 53257494343SDavid Howells 53357494343SDavid Howells /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS 53457494343SDavid Howells * is fixed, we keep these numbers in terms of segments (ie. DATA 53557494343SDavid Howells * packets) rather than bytes. 53657494343SDavid Howells */ 53757494343SDavid Howells #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN 53857494343SDavid Howells u8 cong_cwnd; /* Congestion window size */ 53957494343SDavid Howells u8 cong_extra; /* Extra to send for congestion management */ 54057494343SDavid Howells u8 cong_ssthresh; /* Slow-start threshold */ 54157494343SDavid Howells enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */ 54257494343SDavid Howells u8 cong_dup_acks; /* Count of ACKs showing missing packets */ 54357494343SDavid Howells u8 cong_cumul_acks; /* Cumulative ACK count */ 54457494343SDavid Howells ktime_t cong_tstamp; /* Last time cwnd was changed */ 54557494343SDavid Howells 546248f219cSDavid Howells rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not 547248f219cSDavid Howells * consumed packet follows this. 548248f219cSDavid Howells */ 549248f219cSDavid Howells rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */ 550248f219cSDavid Howells rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */ 551248f219cSDavid Howells u8 rx_winsize; /* Size of Rx window */ 552248f219cSDavid Howells u8 tx_winsize; /* Maximum size of Tx window */ 55371f3ca40SDavid Howells bool tx_phase; /* T if transmission phase, F if receive phase */ 55475e42126SDavid Howells u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */ 55517926a79SDavid Howells 55617926a79SDavid Howells /* receive-phase ACK management */ 5574e36a95eSDavid Howells u8 ackr_reason; /* reason to ACK */ 558563ea7d5SDavid Howells u16 ackr_skew; /* skew on packet being ACK'd */ 5590d12f8a4SDavid Howells rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ 560248f219cSDavid Howells rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ 561805b21b9SDavid Howells rxrpc_seq_t ackr_consumed; /* Highest packet shown consumed */ 562805b21b9SDavid Howells rxrpc_seq_t ackr_seen; /* Highest packet shown seen */ 5638e83134dSDavid Howells rxrpc_serial_t ackr_ping; /* Last ping sent */ 5648e83134dSDavid Howells ktime_t ackr_ping_time; /* Time last ping sent */ 56517926a79SDavid Howells 566248f219cSDavid Howells /* transmission-phase ACK management */ 56757494343SDavid Howells ktime_t acks_latest_ts; /* Timestamp of latest ACK received */ 568248f219cSDavid Howells rxrpc_serial_t acks_latest; /* serial number of latest ACK received */ 56931a1b989SDavid Howells rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */ 57031a1b989SDavid Howells }; 57131a1b989SDavid Howells 57231a1b989SDavid Howells /* 57357494343SDavid Howells * Summary of a new ACK and the changes it made to the Tx buffer packet states. 57431a1b989SDavid Howells */ 57531a1b989SDavid Howells struct rxrpc_ack_summary { 57631a1b989SDavid Howells u8 ack_reason; 57731a1b989SDavid Howells u8 nr_acks; /* Number of ACKs in packet */ 57831a1b989SDavid Howells u8 nr_nacks; /* Number of NACKs in packet */ 57931a1b989SDavid Howells u8 nr_new_acks; /* Number of new ACKs in packet */ 58031a1b989SDavid Howells u8 nr_new_nacks; /* Number of new NACKs in packet */ 58131a1b989SDavid Howells u8 nr_rot_new_acks; /* Number of rotated new ACKs */ 58231a1b989SDavid Howells bool new_low_nack; /* T if new low NACK found */ 58357494343SDavid Howells bool retrans_timeo; /* T if reTx due to timeout happened */ 58457494343SDavid Howells u8 flight_size; /* Number of unreceived transmissions */ 58557494343SDavid Howells /* Place to stash values for tracing */ 58657494343SDavid Howells enum rxrpc_congest_mode mode:8; 58757494343SDavid Howells u8 cwnd; 58857494343SDavid Howells u8 ssthresh; 58957494343SDavid Howells u8 dup_acks; 59057494343SDavid Howells u8 cumulative_acks; 59117926a79SDavid Howells }; 59217926a79SDavid Howells 59371f3ca40SDavid Howells enum rxrpc_skb_trace { 59471f3ca40SDavid Howells rxrpc_skb_rx_cleaned, 59571f3ca40SDavid Howells rxrpc_skb_rx_freed, 59671f3ca40SDavid Howells rxrpc_skb_rx_got, 59771f3ca40SDavid Howells rxrpc_skb_rx_lost, 59871f3ca40SDavid Howells rxrpc_skb_rx_received, 59971f3ca40SDavid Howells rxrpc_skb_rx_rotated, 60071f3ca40SDavid Howells rxrpc_skb_rx_purged, 60171f3ca40SDavid Howells rxrpc_skb_rx_seen, 60271f3ca40SDavid Howells rxrpc_skb_tx_cleaned, 60371f3ca40SDavid Howells rxrpc_skb_tx_freed, 60471f3ca40SDavid Howells rxrpc_skb_tx_got, 60571f3ca40SDavid Howells rxrpc_skb_tx_new, 60671f3ca40SDavid Howells rxrpc_skb_tx_rotated, 60771f3ca40SDavid Howells rxrpc_skb_tx_seen, 60871f3ca40SDavid Howells rxrpc_skb__nr_trace 60971f3ca40SDavid Howells }; 61071f3ca40SDavid Howells 61171f3ca40SDavid Howells extern const char rxrpc_skb_traces[rxrpc_skb__nr_trace][7]; 61271f3ca40SDavid Howells 613363deeabSDavid Howells enum rxrpc_conn_trace { 614363deeabSDavid Howells rxrpc_conn_new_client, 615363deeabSDavid Howells rxrpc_conn_new_service, 616363deeabSDavid Howells rxrpc_conn_queued, 617363deeabSDavid Howells rxrpc_conn_seen, 618363deeabSDavid Howells rxrpc_conn_got, 619363deeabSDavid Howells rxrpc_conn_put_client, 620363deeabSDavid Howells rxrpc_conn_put_service, 621363deeabSDavid Howells rxrpc_conn__nr_trace 622363deeabSDavid Howells }; 623363deeabSDavid Howells 624363deeabSDavid Howells extern const char rxrpc_conn_traces[rxrpc_conn__nr_trace][4]; 625363deeabSDavid Howells 626363deeabSDavid Howells enum rxrpc_client_trace { 627363deeabSDavid Howells rxrpc_client_activate_chans, 628363deeabSDavid Howells rxrpc_client_alloc, 629363deeabSDavid Howells rxrpc_client_chan_activate, 630363deeabSDavid Howells rxrpc_client_chan_disconnect, 631363deeabSDavid Howells rxrpc_client_chan_pass, 632363deeabSDavid Howells rxrpc_client_chan_unstarted, 633363deeabSDavid Howells rxrpc_client_cleanup, 634363deeabSDavid Howells rxrpc_client_count, 635363deeabSDavid Howells rxrpc_client_discard, 636363deeabSDavid Howells rxrpc_client_duplicate, 637363deeabSDavid Howells rxrpc_client_exposed, 638363deeabSDavid Howells rxrpc_client_replace, 639363deeabSDavid Howells rxrpc_client_to_active, 640363deeabSDavid Howells rxrpc_client_to_culled, 641363deeabSDavid Howells rxrpc_client_to_idle, 642363deeabSDavid Howells rxrpc_client_to_inactive, 643363deeabSDavid Howells rxrpc_client_to_waiting, 644363deeabSDavid Howells rxrpc_client_uncount, 645363deeabSDavid Howells rxrpc_client__nr_trace 646363deeabSDavid Howells }; 647363deeabSDavid Howells 648363deeabSDavid Howells extern const char rxrpc_client_traces[rxrpc_client__nr_trace][7]; 649363deeabSDavid Howells extern const char rxrpc_conn_cache_states[RXRPC_CONN__NR_CACHE_STATES][5]; 650363deeabSDavid Howells 651fff72429SDavid Howells enum rxrpc_call_trace { 652fff72429SDavid Howells rxrpc_call_new_client, 653fff72429SDavid Howells rxrpc_call_new_service, 654fff72429SDavid Howells rxrpc_call_queued, 655fff72429SDavid Howells rxrpc_call_queued_ref, 656fff72429SDavid Howells rxrpc_call_seen, 657a84a46d7SDavid Howells rxrpc_call_connected, 658a84a46d7SDavid Howells rxrpc_call_release, 659fff72429SDavid Howells rxrpc_call_got, 660fff72429SDavid Howells rxrpc_call_got_userid, 661cbd00891SDavid Howells rxrpc_call_got_kernel, 662fff72429SDavid Howells rxrpc_call_put, 663fff72429SDavid Howells rxrpc_call_put_userid, 664cbd00891SDavid Howells rxrpc_call_put_kernel, 665fff72429SDavid Howells rxrpc_call_put_noqueue, 666a84a46d7SDavid Howells rxrpc_call_error, 667fff72429SDavid Howells rxrpc_call__nr_trace 668fff72429SDavid Howells }; 669fff72429SDavid Howells 670fff72429SDavid Howells extern const char rxrpc_call_traces[rxrpc_call__nr_trace][4]; 671fff72429SDavid Howells 672a124fe3eSDavid Howells enum rxrpc_transmit_trace { 673a124fe3eSDavid Howells rxrpc_transmit_wait, 674a124fe3eSDavid Howells rxrpc_transmit_queue, 675a124fe3eSDavid Howells rxrpc_transmit_queue_last, 676a124fe3eSDavid Howells rxrpc_transmit_rotate, 67770790dbeSDavid Howells rxrpc_transmit_rotate_last, 67870790dbeSDavid Howells rxrpc_transmit_await_reply, 679a124fe3eSDavid Howells rxrpc_transmit_end, 680a124fe3eSDavid Howells rxrpc_transmit__nr_trace 681a124fe3eSDavid Howells }; 682a124fe3eSDavid Howells 683a124fe3eSDavid Howells extern const char rxrpc_transmit_traces[rxrpc_transmit__nr_trace][4]; 684a124fe3eSDavid Howells 68558dc63c9SDavid Howells enum rxrpc_receive_trace { 68658dc63c9SDavid Howells rxrpc_receive_incoming, 68758dc63c9SDavid Howells rxrpc_receive_queue, 68858dc63c9SDavid Howells rxrpc_receive_queue_last, 68958dc63c9SDavid Howells rxrpc_receive_front, 69058dc63c9SDavid Howells rxrpc_receive_rotate, 69158dc63c9SDavid Howells rxrpc_receive_end, 69258dc63c9SDavid Howells rxrpc_receive__nr_trace 69358dc63c9SDavid Howells }; 69458dc63c9SDavid Howells 69558dc63c9SDavid Howells extern const char rxrpc_receive_traces[rxrpc_receive__nr_trace][4]; 69658dc63c9SDavid Howells 69784997905SDavid Howells enum rxrpc_recvmsg_trace { 69884997905SDavid Howells rxrpc_recvmsg_enter, 69984997905SDavid Howells rxrpc_recvmsg_wait, 70084997905SDavid Howells rxrpc_recvmsg_dequeue, 70184997905SDavid Howells rxrpc_recvmsg_hole, 70284997905SDavid Howells rxrpc_recvmsg_next, 70384997905SDavid Howells rxrpc_recvmsg_cont, 70484997905SDavid Howells rxrpc_recvmsg_full, 70584997905SDavid Howells rxrpc_recvmsg_data_return, 70684997905SDavid Howells rxrpc_recvmsg_terminal, 70784997905SDavid Howells rxrpc_recvmsg_to_be_accepted, 70884997905SDavid Howells rxrpc_recvmsg_return, 70984997905SDavid Howells rxrpc_recvmsg__nr_trace 71084997905SDavid Howells }; 71184997905SDavid Howells 71284997905SDavid Howells extern const char rxrpc_recvmsg_traces[rxrpc_recvmsg__nr_trace][5]; 71384997905SDavid Howells 714cf1a6474SDavid Howells enum rxrpc_rtt_tx_trace { 715cf1a6474SDavid Howells rxrpc_rtt_tx_ping, 71650235c4bSDavid Howells rxrpc_rtt_tx_data, 717cf1a6474SDavid Howells rxrpc_rtt_tx__nr_trace 718cf1a6474SDavid Howells }; 719cf1a6474SDavid Howells 720cf1a6474SDavid Howells extern const char rxrpc_rtt_tx_traces[rxrpc_rtt_tx__nr_trace][5]; 721cf1a6474SDavid Howells 722cf1a6474SDavid Howells enum rxrpc_rtt_rx_trace { 723cf1a6474SDavid Howells rxrpc_rtt_rx_ping_response, 72450235c4bSDavid Howells rxrpc_rtt_rx_requested_ack, 725cf1a6474SDavid Howells rxrpc_rtt_rx__nr_trace 726cf1a6474SDavid Howells }; 727cf1a6474SDavid Howells 728cf1a6474SDavid Howells extern const char rxrpc_rtt_rx_traces[rxrpc_rtt_rx__nr_trace][5]; 729cf1a6474SDavid Howells 730fc7ab6d2SDavid Howells enum rxrpc_timer_trace { 731fc7ab6d2SDavid Howells rxrpc_timer_begin, 732dd7c1ee5SDavid Howells rxrpc_timer_init_for_reply, 733fc7ab6d2SDavid Howells rxrpc_timer_expired, 734fc7ab6d2SDavid Howells rxrpc_timer_set_for_ack, 735fc7ab6d2SDavid Howells rxrpc_timer_set_for_resend, 736fc7ab6d2SDavid Howells rxrpc_timer_set_for_send, 737fc7ab6d2SDavid Howells rxrpc_timer__nr_trace 738fc7ab6d2SDavid Howells }; 739fc7ab6d2SDavid Howells 740fc7ab6d2SDavid Howells extern const char rxrpc_timer_traces[rxrpc_timer__nr_trace][8]; 741fc7ab6d2SDavid Howells 7429c7ad434SDavid Howells enum rxrpc_propose_ack_trace { 7430d967960SDavid Howells rxrpc_propose_ack_client_tx_end, 7449c7ad434SDavid Howells rxrpc_propose_ack_input_data, 74557494343SDavid Howells rxrpc_propose_ack_ping_for_lost_ack, 7460d967960SDavid Howells rxrpc_propose_ack_ping_for_lost_reply, 7479c7ad434SDavid Howells rxrpc_propose_ack_ping_for_params, 7489c7ad434SDavid Howells rxrpc_propose_ack_respond_to_ack, 7499c7ad434SDavid Howells rxrpc_propose_ack_respond_to_ping, 7509c7ad434SDavid Howells rxrpc_propose_ack_retry_tx, 751805b21b9SDavid Howells rxrpc_propose_ack_rotate_rx, 7529c7ad434SDavid Howells rxrpc_propose_ack_terminal_ack, 7539c7ad434SDavid Howells rxrpc_propose_ack__nr_trace 7549c7ad434SDavid Howells }; 7559c7ad434SDavid Howells 7569c7ad434SDavid Howells enum rxrpc_propose_ack_outcome { 7579c7ad434SDavid Howells rxrpc_propose_ack_use, 7589c7ad434SDavid Howells rxrpc_propose_ack_update, 7599c7ad434SDavid Howells rxrpc_propose_ack_subsume, 7609c7ad434SDavid Howells rxrpc_propose_ack__nr_outcomes 7619c7ad434SDavid Howells }; 7629c7ad434SDavid Howells 7639c7ad434SDavid Howells extern const char rxrpc_propose_ack_traces[rxrpc_propose_ack__nr_trace][8]; 7649c7ad434SDavid Howells extern const char *const rxrpc_propose_ack_outcomes[rxrpc_propose_ack__nr_outcomes]; 7659c7ad434SDavid Howells 76657494343SDavid Howells enum rxrpc_congest_change { 76757494343SDavid Howells rxrpc_cong_begin_retransmission, 76857494343SDavid Howells rxrpc_cong_cleared_nacks, 76957494343SDavid Howells rxrpc_cong_new_low_nack, 77057494343SDavid Howells rxrpc_cong_no_change, 77157494343SDavid Howells rxrpc_cong_progress, 77257494343SDavid Howells rxrpc_cong_retransmit_again, 77357494343SDavid Howells rxrpc_cong_rtt_window_end, 77457494343SDavid Howells rxrpc_cong_saw_nack, 77557494343SDavid Howells rxrpc_congest__nr_change 77657494343SDavid Howells }; 77757494343SDavid Howells 77857494343SDavid Howells extern const char rxrpc_congest_modes[NR__RXRPC_CONGEST_MODES][10]; 77957494343SDavid Howells extern const char rxrpc_congest_changes[rxrpc_congest__nr_change][9]; 78057494343SDavid Howells 781a3868bfcSDavid Howells extern const char *const rxrpc_pkts[]; 7829c7ad434SDavid Howells extern const char const rxrpc_ack_names[RXRPC_ACK__INVALID + 1][4]; 783a3868bfcSDavid Howells 784df844fd4SDavid Howells #include <trace/events/rxrpc.h> 785df844fd4SDavid Howells 78617926a79SDavid Howells /* 787651350d1SDavid Howells * af_rxrpc.c 78817926a79SDavid Howells */ 78971f3ca40SDavid Howells extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs; 7900d12f8a4SDavid Howells extern u32 rxrpc_epoch; 791651350d1SDavid Howells extern atomic_t rxrpc_debug_id; 792651350d1SDavid Howells extern struct workqueue_struct *rxrpc_workqueue; 79317926a79SDavid Howells 79417926a79SDavid Howells /* 7950d81a51aSDavid Howells * call_accept.c 79617926a79SDavid Howells */ 79700e90712SDavid Howells int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); 79800e90712SDavid Howells void rxrpc_discard_prealloc(struct rxrpc_sock *); 799248f219cSDavid Howells struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *, 800248f219cSDavid Howells struct rxrpc_connection *, 801248f219cSDavid Howells struct sk_buff *); 8024f95dd78SDavid Howells void rxrpc_accept_incoming_calls(struct rxrpc_local *); 803d001648eSDavid Howells struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long, 804d001648eSDavid Howells rxrpc_notify_rx_t); 805c1b1203dSJoe Perches int rxrpc_reject_call(struct rxrpc_sock *); 80617926a79SDavid Howells 80717926a79SDavid Howells /* 8080d81a51aSDavid Howells * call_event.c 80917926a79SDavid Howells */ 810fc7ab6d2SDavid Howells void rxrpc_set_timer(struct rxrpc_call *, enum rxrpc_timer_trace); 8119c7ad434SDavid Howells void rxrpc_propose_ACK(struct rxrpc_call *, u8, u16, u32, bool, bool, 8129c7ad434SDavid Howells enum rxrpc_propose_ack_trace); 813c1b1203dSJoe Perches void rxrpc_process_call(struct work_struct *); 81417926a79SDavid Howells 81517926a79SDavid Howells /* 8160d81a51aSDavid Howells * call_object.c 81717926a79SDavid Howells */ 818f5c17aaeSDavid Howells extern const char *const rxrpc_call_states[]; 819f5c17aaeSDavid Howells extern const char *const rxrpc_call_completions[]; 820dad8aff7SDavid Howells extern unsigned int rxrpc_max_call_lifetime; 82117926a79SDavid Howells extern struct kmem_cache *rxrpc_call_jar; 82217926a79SDavid Howells extern struct list_head rxrpc_calls; 82317926a79SDavid Howells extern rwlock_t rxrpc_call_lock; 82417926a79SDavid Howells 8252341e077SDavid Howells struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); 82600e90712SDavid Howells struct rxrpc_call *rxrpc_alloc_call(gfp_t); 8272341e077SDavid Howells struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, 82819ffa01cSDavid Howells struct rxrpc_conn_parameters *, 829999b69f8SDavid Howells struct sockaddr_rxrpc *, 8302341e077SDavid Howells unsigned long, gfp_t); 831248f219cSDavid Howells void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, 83242886ffeSDavid Howells struct sk_buff *); 8338d94aa38SDavid Howells void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); 834c1b1203dSJoe Perches void rxrpc_release_calls_on_socket(struct rxrpc_sock *); 8358d94aa38SDavid Howells bool __rxrpc_queue_call(struct rxrpc_call *); 8368d94aa38SDavid Howells bool rxrpc_queue_call(struct rxrpc_call *); 837e34d4234SDavid Howells void rxrpc_see_call(struct rxrpc_call *); 838fff72429SDavid Howells void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 839fff72429SDavid Howells void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); 84000e90712SDavid Howells void rxrpc_cleanup_call(struct rxrpc_call *); 841c1b1203dSJoe Perches void __exit rxrpc_destroy_all_calls(void); 84217926a79SDavid Howells 843dabe5a79SDavid Howells static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) 844dabe5a79SDavid Howells { 845dabe5a79SDavid Howells return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); 846dabe5a79SDavid Howells } 847dabe5a79SDavid Howells 848dabe5a79SDavid Howells static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) 849dabe5a79SDavid Howells { 850dabe5a79SDavid Howells return !rxrpc_is_service_call(call); 851dabe5a79SDavid Howells } 852dabe5a79SDavid Howells 85317926a79SDavid Howells /* 854f5c17aaeSDavid Howells * Transition a call to the complete state. 855f5c17aaeSDavid Howells */ 856f5c17aaeSDavid Howells static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call, 857f5c17aaeSDavid Howells enum rxrpc_call_completion compl, 858f5c17aaeSDavid Howells u32 abort_code, 859f5c17aaeSDavid Howells int error) 860f5c17aaeSDavid Howells { 861f5c17aaeSDavid Howells if (call->state < RXRPC_CALL_COMPLETE) { 862f5c17aaeSDavid Howells call->abort_code = abort_code; 863f5c17aaeSDavid Howells call->error = error; 864f5c17aaeSDavid Howells call->completion = compl, 865f5c17aaeSDavid Howells call->state = RXRPC_CALL_COMPLETE; 866c0d058c2SDavid Howells wake_up(&call->waitq); 867f5c17aaeSDavid Howells return true; 868f5c17aaeSDavid Howells } 869f5c17aaeSDavid Howells return false; 870f5c17aaeSDavid Howells } 871f5c17aaeSDavid Howells 872f5c17aaeSDavid Howells static inline bool rxrpc_set_call_completion(struct rxrpc_call *call, 873f5c17aaeSDavid Howells enum rxrpc_call_completion compl, 874f5c17aaeSDavid Howells u32 abort_code, 875f5c17aaeSDavid Howells int error) 876f5c17aaeSDavid Howells { 877e8d6bbb0SDavid Howells bool ret; 878f5c17aaeSDavid Howells 879f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 880f5c17aaeSDavid Howells ret = __rxrpc_set_call_completion(call, compl, abort_code, error); 881f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 882f5c17aaeSDavid Howells return ret; 883f5c17aaeSDavid Howells } 884f5c17aaeSDavid Howells 885f5c17aaeSDavid Howells /* 886f5c17aaeSDavid Howells * Record that a call successfully completed. 887f5c17aaeSDavid Howells */ 888e8d6bbb0SDavid Howells static inline bool __rxrpc_call_completed(struct rxrpc_call *call) 889f5c17aaeSDavid Howells { 890e8d6bbb0SDavid Howells return __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0); 891f5c17aaeSDavid Howells } 892f5c17aaeSDavid Howells 893e8d6bbb0SDavid Howells static inline bool rxrpc_call_completed(struct rxrpc_call *call) 894f5c17aaeSDavid Howells { 895e8d6bbb0SDavid Howells bool ret; 896e8d6bbb0SDavid Howells 897f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 898e8d6bbb0SDavid Howells ret = __rxrpc_call_completed(call); 899f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 900e8d6bbb0SDavid Howells return ret; 901f5c17aaeSDavid Howells } 902f5c17aaeSDavid Howells 903f5c17aaeSDavid Howells /* 904f5c17aaeSDavid Howells * Record that a call is locally aborted. 905f5c17aaeSDavid Howells */ 9065a42976dSDavid Howells static inline bool __rxrpc_abort_call(const char *why, struct rxrpc_call *call, 9075a42976dSDavid Howells rxrpc_seq_t seq, 908f5c17aaeSDavid Howells u32 abort_code, int error) 909f5c17aaeSDavid Howells { 9105a42976dSDavid Howells trace_rxrpc_abort(why, call->cid, call->call_id, seq, 9115a42976dSDavid Howells abort_code, error); 912248f219cSDavid Howells return __rxrpc_set_call_completion(call, RXRPC_CALL_LOCALLY_ABORTED, 913248f219cSDavid Howells abort_code, error); 914f5c17aaeSDavid Howells } 915f5c17aaeSDavid Howells 9165a42976dSDavid Howells static inline bool rxrpc_abort_call(const char *why, struct rxrpc_call *call, 9175a42976dSDavid Howells rxrpc_seq_t seq, u32 abort_code, int error) 918f5c17aaeSDavid Howells { 919f5c17aaeSDavid Howells bool ret; 920f5c17aaeSDavid Howells 921f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 9225a42976dSDavid Howells ret = __rxrpc_abort_call(why, call, seq, abort_code, error); 923f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 924f5c17aaeSDavid Howells return ret; 925f5c17aaeSDavid Howells } 926f5c17aaeSDavid Howells 927f5c17aaeSDavid Howells /* 9284a3388c8SDavid Howells * conn_client.c 9294a3388c8SDavid Howells */ 93045025bceSDavid Howells extern unsigned int rxrpc_max_client_connections; 93145025bceSDavid Howells extern unsigned int rxrpc_reap_client_connections; 93245025bceSDavid Howells extern unsigned int rxrpc_conn_idle_client_expiry; 93345025bceSDavid Howells extern unsigned int rxrpc_conn_idle_client_fast_expiry; 9344a3388c8SDavid Howells extern struct idr rxrpc_client_conn_ids; 9354a3388c8SDavid Howells 936eb9b9d22SDavid Howells void rxrpc_destroy_client_conn_ids(void); 937c6d2b8d7SDavid Howells int rxrpc_connect_call(struct rxrpc_call *, struct rxrpc_conn_parameters *, 938c6d2b8d7SDavid Howells struct sockaddr_rxrpc *, gfp_t); 93945025bceSDavid Howells void rxrpc_expose_client_call(struct rxrpc_call *); 94045025bceSDavid Howells void rxrpc_disconnect_client_call(struct rxrpc_call *); 94145025bceSDavid Howells void rxrpc_put_client_conn(struct rxrpc_connection *); 94245025bceSDavid Howells void __exit rxrpc_destroy_all_client_connections(void); 9434a3388c8SDavid Howells 9444a3388c8SDavid Howells /* 9450d81a51aSDavid Howells * conn_event.c 9460d81a51aSDavid Howells */ 9470d81a51aSDavid Howells void rxrpc_process_connection(struct work_struct *); 9480d81a51aSDavid Howells 9490d81a51aSDavid Howells /* 9500d81a51aSDavid Howells * conn_object.c 95117926a79SDavid Howells */ 952dad8aff7SDavid Howells extern unsigned int rxrpc_connection_expiry; 95317926a79SDavid Howells extern struct list_head rxrpc_connections; 9544d028b2cSDavid Howells extern struct list_head rxrpc_connection_proc_list; 95517926a79SDavid Howells extern rwlock_t rxrpc_connection_lock; 95617926a79SDavid Howells 9578496af50SDavid Howells int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 958c6d2b8d7SDavid Howells struct rxrpc_connection *rxrpc_alloc_connection(gfp_t); 9598496af50SDavid Howells struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *, 960aa390bbeSDavid Howells struct sk_buff *); 96145025bceSDavid Howells void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); 962999b69f8SDavid Howells void rxrpc_disconnect_call(struct rxrpc_call *); 96345025bceSDavid Howells void rxrpc_kill_connection(struct rxrpc_connection *); 964363deeabSDavid Howells bool rxrpc_queue_conn(struct rxrpc_connection *); 965363deeabSDavid Howells void rxrpc_see_connection(struct rxrpc_connection *); 966363deeabSDavid Howells void rxrpc_get_connection(struct rxrpc_connection *); 967363deeabSDavid Howells struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *); 968363deeabSDavid Howells void rxrpc_put_service_conn(struct rxrpc_connection *); 969c1b1203dSJoe Perches void __exit rxrpc_destroy_all_connections(void); 97017926a79SDavid Howells 97119ffa01cSDavid Howells static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) 97219ffa01cSDavid Howells { 97319ffa01cSDavid Howells return conn->out_clientflag; 97419ffa01cSDavid Howells } 97519ffa01cSDavid Howells 97619ffa01cSDavid Howells static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) 97719ffa01cSDavid Howells { 978e8d70ce1SDavid Howells return !rxrpc_conn_is_client(conn); 97919ffa01cSDavid Howells } 98019ffa01cSDavid Howells 981f51b4480SDavid Howells static inline void rxrpc_put_connection(struct rxrpc_connection *conn) 982f51b4480SDavid Howells { 98345025bceSDavid Howells if (!conn) 98445025bceSDavid Howells return; 98545025bceSDavid Howells 986363deeabSDavid Howells if (rxrpc_conn_is_client(conn)) 98745025bceSDavid Howells rxrpc_put_client_conn(conn); 988363deeabSDavid Howells else 989363deeabSDavid Howells rxrpc_put_service_conn(conn); 9905acbee46SDavid Howells } 9915acbee46SDavid Howells 99217926a79SDavid Howells /* 9937877a4a4SDavid Howells * conn_service.c 9947877a4a4SDavid Howells */ 9958496af50SDavid Howells struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, 9968496af50SDavid Howells struct sk_buff *); 99700e90712SDavid Howells struct rxrpc_connection *rxrpc_prealloc_service_connection(gfp_t); 998248f219cSDavid Howells void rxrpc_new_incoming_connection(struct rxrpc_connection *, struct sk_buff *); 999001c1122SDavid Howells void rxrpc_unpublish_service_conn(struct rxrpc_connection *); 10007877a4a4SDavid Howells 10017877a4a4SDavid Howells /* 10020d81a51aSDavid Howells * input.c 100317926a79SDavid Howells */ 1004676d2369SDavid S. Miller void rxrpc_data_ready(struct sock *); 100517926a79SDavid Howells 100617926a79SDavid Howells /* 10070d81a51aSDavid Howells * insecure.c 100817926a79SDavid Howells */ 10090d81a51aSDavid Howells extern const struct rxrpc_security rxrpc_no_security; 101017926a79SDavid Howells 101117926a79SDavid Howells /* 10120d81a51aSDavid Howells * key.c 101317926a79SDavid Howells */ 101417926a79SDavid Howells extern struct key_type key_type_rxrpc; 101517926a79SDavid Howells extern struct key_type key_type_rxrpc_s; 101617926a79SDavid Howells 1017c1b1203dSJoe Perches int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); 1018c1b1203dSJoe Perches int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); 1019c1b1203dSJoe Perches int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time_t, 1020c1b1203dSJoe Perches u32); 102117926a79SDavid Howells 102217926a79SDavid Howells /* 102387563616SDavid Howells * local_event.c 102487563616SDavid Howells */ 10254f95dd78SDavid Howells extern void rxrpc_process_local_events(struct rxrpc_local *); 102687563616SDavid Howells 102787563616SDavid Howells /* 10280d81a51aSDavid Howells * local_object.c 102917926a79SDavid Howells */ 10304f95dd78SDavid Howells struct rxrpc_local *rxrpc_lookup_local(const struct sockaddr_rxrpc *); 10314f95dd78SDavid Howells void __rxrpc_put_local(struct rxrpc_local *); 10320d81a51aSDavid Howells void __exit rxrpc_destroy_all_locals(void); 1033e0e4d82fSDavid Howells 10344f95dd78SDavid Howells static inline void rxrpc_get_local(struct rxrpc_local *local) 10354f95dd78SDavid Howells { 10364f95dd78SDavid Howells atomic_inc(&local->usage); 10374f95dd78SDavid Howells } 10384f95dd78SDavid Howells 10394f95dd78SDavid Howells static inline 10404f95dd78SDavid Howells struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *local) 10414f95dd78SDavid Howells { 10424f95dd78SDavid Howells return atomic_inc_not_zero(&local->usage) ? local : NULL; 10434f95dd78SDavid Howells } 10444f95dd78SDavid Howells 10454f95dd78SDavid Howells static inline void rxrpc_put_local(struct rxrpc_local *local) 10464f95dd78SDavid Howells { 10475627cc8bSDavid Howells if (local && atomic_dec_and_test(&local->usage)) 10484f95dd78SDavid Howells __rxrpc_put_local(local); 10494f95dd78SDavid Howells } 10504f95dd78SDavid Howells 10515acbee46SDavid Howells static inline void rxrpc_queue_local(struct rxrpc_local *local) 10525acbee46SDavid Howells { 10535acbee46SDavid Howells rxrpc_queue_work(&local->processor); 10545acbee46SDavid Howells } 10555acbee46SDavid Howells 1056e0e4d82fSDavid Howells /* 10578e688d9cSDavid Howells * misc.c 10588e688d9cSDavid Howells */ 10590e119b41SDavid Howells extern unsigned int rxrpc_max_backlog __read_mostly; 10608e688d9cSDavid Howells extern unsigned int rxrpc_requested_ack_delay; 10618e688d9cSDavid Howells extern unsigned int rxrpc_soft_ack_delay; 10628e688d9cSDavid Howells extern unsigned int rxrpc_idle_ack_delay; 10638e688d9cSDavid Howells extern unsigned int rxrpc_rx_window_size; 10648e688d9cSDavid Howells extern unsigned int rxrpc_rx_mtu; 10658e688d9cSDavid Howells extern unsigned int rxrpc_rx_jumbo_max; 10660b58b8a1SDavid Howells extern unsigned int rxrpc_resend_timeout; 10678e688d9cSDavid Howells 10688e688d9cSDavid Howells extern const s8 rxrpc_ack_priority[]; 10698e688d9cSDavid Howells 10708e688d9cSDavid Howells /* 10710d81a51aSDavid Howells * output.c 10720d81a51aSDavid Howells */ 10738d94aa38SDavid Howells int rxrpc_send_call_packet(struct rxrpc_call *, u8); 1074a1767077SDavid Howells int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *, bool); 1075248f219cSDavid Howells void rxrpc_reject_packets(struct rxrpc_local *); 10760d81a51aSDavid Howells 10770d81a51aSDavid Howells /* 1078abe89ef0SDavid Howells * peer_event.c 10790d81a51aSDavid Howells */ 1080abe89ef0SDavid Howells void rxrpc_error_report(struct sock *); 1081f66d7490SDavid Howells void rxrpc_peer_error_distributor(struct work_struct *); 1082cf1a6474SDavid Howells void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, 1083cf1a6474SDavid Howells rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); 10840d81a51aSDavid Howells 10850d81a51aSDavid Howells /* 10860d81a51aSDavid Howells * peer_object.c 10870d81a51aSDavid Howells */ 1088be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, 1089be6e6707SDavid Howells const struct sockaddr_rxrpc *); 1090be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *, 1091be6e6707SDavid Howells struct sockaddr_rxrpc *, gfp_t); 1092be6e6707SDavid Howells struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); 1093248f219cSDavid Howells struct rxrpc_peer *rxrpc_lookup_incoming_peer(struct rxrpc_local *, 1094248f219cSDavid Howells struct rxrpc_peer *); 1095be6e6707SDavid Howells 1096df5d8bf7SDavid Howells static inline struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *peer) 1097be6e6707SDavid Howells { 1098be6e6707SDavid Howells atomic_inc(&peer->usage); 1099df5d8bf7SDavid Howells return peer; 1100be6e6707SDavid Howells } 1101be6e6707SDavid Howells 1102be6e6707SDavid Howells static inline 1103be6e6707SDavid Howells struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *peer) 1104be6e6707SDavid Howells { 1105be6e6707SDavid Howells return atomic_inc_not_zero(&peer->usage) ? peer : NULL; 1106be6e6707SDavid Howells } 1107be6e6707SDavid Howells 1108be6e6707SDavid Howells extern void __rxrpc_put_peer(struct rxrpc_peer *peer); 1109be6e6707SDavid Howells static inline void rxrpc_put_peer(struct rxrpc_peer *peer) 1110be6e6707SDavid Howells { 11115627cc8bSDavid Howells if (peer && atomic_dec_and_test(&peer->usage)) 1112be6e6707SDavid Howells __rxrpc_put_peer(peer); 1113be6e6707SDavid Howells } 11140d81a51aSDavid Howells 11150d81a51aSDavid Howells /* 11160d81a51aSDavid Howells * proc.c 11170d81a51aSDavid Howells */ 11180d81a51aSDavid Howells extern const struct file_operations rxrpc_call_seq_fops; 11190d81a51aSDavid Howells extern const struct file_operations rxrpc_connection_seq_fops; 11200d81a51aSDavid Howells 11210d81a51aSDavid Howells /* 11220d81a51aSDavid Howells * recvmsg.c 11230d81a51aSDavid Howells */ 1124248f219cSDavid Howells void rxrpc_notify_socket(struct rxrpc_call *); 11250d81a51aSDavid Howells int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); 11260d81a51aSDavid Howells 11270d81a51aSDavid Howells /* 1128648af7fcSDavid Howells * rxkad.c 1129648af7fcSDavid Howells */ 1130648af7fcSDavid Howells #ifdef CONFIG_RXKAD 1131648af7fcSDavid Howells extern const struct rxrpc_security rxkad; 1132648af7fcSDavid Howells #endif 1133648af7fcSDavid Howells 1134648af7fcSDavid Howells /* 11350d81a51aSDavid Howells * security.c 11360d81a51aSDavid Howells */ 11370d81a51aSDavid Howells int __init rxrpc_init_security(void); 11380d81a51aSDavid Howells void rxrpc_exit_security(void); 11390d81a51aSDavid Howells int rxrpc_init_client_conn_security(struct rxrpc_connection *); 11400d81a51aSDavid Howells int rxrpc_init_server_conn_security(struct rxrpc_connection *); 11410d81a51aSDavid Howells 11420d81a51aSDavid Howells /* 11430b58b8a1SDavid Howells * sendmsg.c 11440b58b8a1SDavid Howells */ 11450b58b8a1SDavid Howells int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); 11460b58b8a1SDavid Howells 11470b58b8a1SDavid Howells /* 11480d81a51aSDavid Howells * skbuff.c 11490d81a51aSDavid Howells */ 1150d001648eSDavid Howells void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); 11510d81a51aSDavid Howells void rxrpc_packet_destructor(struct sk_buff *); 115271f3ca40SDavid Howells void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); 115371f3ca40SDavid Howells void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); 115471f3ca40SDavid Howells void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); 115571f3ca40SDavid Howells void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); 115671f3ca40SDavid Howells void rxrpc_lose_skb(struct sk_buff *, enum rxrpc_skb_trace); 1157df844fd4SDavid Howells void rxrpc_purge_queue(struct sk_buff_head *); 11580d81a51aSDavid Howells 11590d81a51aSDavid Howells /* 11605873c083SDavid Howells * sysctl.c 11615873c083SDavid Howells */ 11625873c083SDavid Howells #ifdef CONFIG_SYSCTL 11635873c083SDavid Howells extern int __init rxrpc_sysctl_init(void); 11645873c083SDavid Howells extern void rxrpc_sysctl_exit(void); 11655873c083SDavid Howells #else 11665873c083SDavid Howells static inline int __init rxrpc_sysctl_init(void) { return 0; } 11675873c083SDavid Howells static inline void rxrpc_sysctl_exit(void) {} 11685873c083SDavid Howells #endif 11695873c083SDavid Howells 11705873c083SDavid Howells /* 1171be6e6707SDavid Howells * utils.c 1172be6e6707SDavid Howells */ 1173d991b4a3SDavid Howells int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 1174be6e6707SDavid Howells 1175248f219cSDavid Howells static inline bool before(u32 seq1, u32 seq2) 1176248f219cSDavid Howells { 1177248f219cSDavid Howells return (s32)(seq1 - seq2) < 0; 1178248f219cSDavid Howells } 1179248f219cSDavid Howells static inline bool before_eq(u32 seq1, u32 seq2) 1180248f219cSDavid Howells { 1181248f219cSDavid Howells return (s32)(seq1 - seq2) <= 0; 1182248f219cSDavid Howells } 1183248f219cSDavid Howells static inline bool after(u32 seq1, u32 seq2) 1184248f219cSDavid Howells { 1185248f219cSDavid Howells return (s32)(seq1 - seq2) > 0; 1186248f219cSDavid Howells } 1187248f219cSDavid Howells static inline bool after_eq(u32 seq1, u32 seq2) 1188248f219cSDavid Howells { 1189248f219cSDavid Howells return (s32)(seq1 - seq2) >= 0; 1190248f219cSDavid Howells } 1191248f219cSDavid Howells 1192be6e6707SDavid Howells /* 119317926a79SDavid Howells * debug tracing 119417926a79SDavid Howells */ 119595c96174SEric Dumazet extern unsigned int rxrpc_debug; 119617926a79SDavid Howells 119717926a79SDavid Howells #define dbgprintk(FMT,...) \ 11989f389f4bSSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 119917926a79SDavid Howells 12000dc47877SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 12010dc47877SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 120217926a79SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 120317926a79SDavid Howells #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) 120417926a79SDavid Howells #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) 120517926a79SDavid Howells 120617926a79SDavid Howells 120717926a79SDavid Howells #if defined(__KDEBUG) 120817926a79SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 120917926a79SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 121017926a79SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 121117926a79SDavid Howells #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) 121217926a79SDavid Howells #define _net(FMT,...) knet(FMT,##__VA_ARGS__) 121317926a79SDavid Howells 121417926a79SDavid Howells #elif defined(CONFIG_AF_RXRPC_DEBUG) 121517926a79SDavid Howells #define RXRPC_DEBUG_KENTER 0x01 121617926a79SDavid Howells #define RXRPC_DEBUG_KLEAVE 0x02 121717926a79SDavid Howells #define RXRPC_DEBUG_KDEBUG 0x04 121817926a79SDavid Howells #define RXRPC_DEBUG_KPROTO 0x08 121917926a79SDavid Howells #define RXRPC_DEBUG_KNET 0x10 122017926a79SDavid Howells 122117926a79SDavid Howells #define _enter(FMT,...) \ 122217926a79SDavid Howells do { \ 122317926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ 122417926a79SDavid Howells kenter(FMT,##__VA_ARGS__); \ 122517926a79SDavid Howells } while (0) 122617926a79SDavid Howells 122717926a79SDavid Howells #define _leave(FMT,...) \ 122817926a79SDavid Howells do { \ 122917926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ 123017926a79SDavid Howells kleave(FMT,##__VA_ARGS__); \ 123117926a79SDavid Howells } while (0) 123217926a79SDavid Howells 123317926a79SDavid Howells #define _debug(FMT,...) \ 123417926a79SDavid Howells do { \ 123517926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ 123617926a79SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 123717926a79SDavid Howells } while (0) 123817926a79SDavid Howells 123917926a79SDavid Howells #define _proto(FMT,...) \ 124017926a79SDavid Howells do { \ 124117926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ 124217926a79SDavid Howells kproto(FMT,##__VA_ARGS__); \ 124317926a79SDavid Howells } while (0) 124417926a79SDavid Howells 124517926a79SDavid Howells #define _net(FMT,...) \ 124617926a79SDavid Howells do { \ 124717926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ 124817926a79SDavid Howells knet(FMT,##__VA_ARGS__); \ 124917926a79SDavid Howells } while (0) 125017926a79SDavid Howells 125117926a79SDavid Howells #else 125212fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 125312fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 125412fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 125512fdff3fSDavid Howells #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) 125612fdff3fSDavid Howells #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) 125717926a79SDavid Howells #endif 125817926a79SDavid Howells 125917926a79SDavid Howells /* 126017926a79SDavid Howells * debug assertion checking 126117926a79SDavid Howells */ 126217926a79SDavid Howells #if 1 // defined(__KDEBUGALL) 126317926a79SDavid Howells 126417926a79SDavid Howells #define ASSERT(X) \ 126517926a79SDavid Howells do { \ 126617926a79SDavid Howells if (unlikely(!(X))) { \ 12679b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 126817926a79SDavid Howells BUG(); \ 126917926a79SDavid Howells } \ 127017926a79SDavid Howells } while (0) 127117926a79SDavid Howells 127217926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 127317926a79SDavid Howells do { \ 1274cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1275cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 12769b6d5398SJoe Perches if (unlikely(!(_x OP _y))) { \ 12779b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1278cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1279cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 128017926a79SDavid Howells BUG(); \ 128117926a79SDavid Howells } \ 128217926a79SDavid Howells } while (0) 128317926a79SDavid Howells 128417926a79SDavid Howells #define ASSERTIF(C, X) \ 128517926a79SDavid Howells do { \ 128617926a79SDavid Howells if (unlikely((C) && !(X))) { \ 12879b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 128817926a79SDavid Howells BUG(); \ 128917926a79SDavid Howells } \ 129017926a79SDavid Howells } while (0) 129117926a79SDavid Howells 129217926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 129317926a79SDavid Howells do { \ 1294cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1295cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 12969b6d5398SJoe Perches if (unlikely((C) && !(_x OP _y))) { \ 12979b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1298cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1299cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 130017926a79SDavid Howells BUG(); \ 130117926a79SDavid Howells } \ 130217926a79SDavid Howells } while (0) 130317926a79SDavid Howells 130417926a79SDavid Howells #else 130517926a79SDavid Howells 130617926a79SDavid Howells #define ASSERT(X) \ 130717926a79SDavid Howells do { \ 130817926a79SDavid Howells } while (0) 130917926a79SDavid Howells 131017926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 131117926a79SDavid Howells do { \ 131217926a79SDavid Howells } while (0) 131317926a79SDavid Howells 131417926a79SDavid Howells #define ASSERTIF(C, X) \ 131517926a79SDavid Howells do { \ 131617926a79SDavid Howells } while (0) 131717926a79SDavid Howells 131817926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 131917926a79SDavid Howells do { \ 132017926a79SDavid Howells } while (0) 132117926a79SDavid Howells 132217926a79SDavid Howells #endif /* __KDEBUGALL */ 1323