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> 142baec2c3SDavid Howells #include <net/net_namespace.h> 152baec2c3SDavid Howells #include <net/netns/generic.h> 16e0e4d82fSDavid Howells #include <net/sock.h> 17be6e6707SDavid Howells #include <net/af_rxrpc.h> 1817926a79SDavid Howells #include <rxrpc/packet.h> 1917926a79SDavid Howells 2017926a79SDavid Howells #if 0 2117926a79SDavid Howells #define CHECK_SLAB_OKAY(X) \ 2217926a79SDavid Howells BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \ 2317926a79SDavid Howells (POISON_FREE << 8 | POISON_FREE)) 2417926a79SDavid Howells #else 2517926a79SDavid Howells #define CHECK_SLAB_OKAY(X) do {} while (0) 2617926a79SDavid Howells #endif 2717926a79SDavid Howells 2817926a79SDavid Howells #define FCRYPT_BSIZE 8 2917926a79SDavid Howells struct rxrpc_crypt { 3017926a79SDavid Howells union { 3117926a79SDavid Howells u8 x[FCRYPT_BSIZE]; 3291e916cfSAl Viro __be32 n[2]; 3317926a79SDavid Howells }; 3417926a79SDavid Howells } __attribute__((aligned(8))); 3517926a79SDavid Howells 36651350d1SDavid Howells #define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS)) 37651350d1SDavid Howells #define rxrpc_queue_delayed_work(WS,D) \ 38651350d1SDavid Howells queue_delayed_work(rxrpc_workqueue, (WS), (D)) 39651350d1SDavid Howells 40cc8feb8eSDavid Howells struct rxrpc_connection; 41cc8feb8eSDavid Howells 4217926a79SDavid Howells /* 43d001648eSDavid Howells * Mark applied to socket buffers. 44d001648eSDavid Howells */ 45d001648eSDavid Howells enum rxrpc_skb_mark { 46d001648eSDavid Howells RXRPC_SKB_MARK_DATA, /* data message */ 47d001648eSDavid Howells RXRPC_SKB_MARK_FINAL_ACK, /* final ACK received message */ 48d001648eSDavid Howells RXRPC_SKB_MARK_BUSY, /* server busy message */ 49d001648eSDavid Howells RXRPC_SKB_MARK_REMOTE_ABORT, /* remote abort message */ 50d001648eSDavid Howells RXRPC_SKB_MARK_LOCAL_ABORT, /* local abort message */ 51d001648eSDavid Howells RXRPC_SKB_MARK_NET_ERROR, /* network error message */ 52d001648eSDavid Howells RXRPC_SKB_MARK_LOCAL_ERROR, /* local error message */ 53d001648eSDavid Howells RXRPC_SKB_MARK_NEW_CALL, /* local error message */ 54d001648eSDavid Howells }; 55d001648eSDavid Howells 56d001648eSDavid Howells /* 5717926a79SDavid Howells * sk_state for RxRPC sockets 5817926a79SDavid Howells */ 5917926a79SDavid Howells enum { 602341e077SDavid Howells RXRPC_UNBOUND = 0, 612341e077SDavid Howells RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */ 6217926a79SDavid Howells RXRPC_CLIENT_BOUND, /* client local address bound */ 6317926a79SDavid Howells RXRPC_SERVER_BOUND, /* server local address bound */ 6417926a79SDavid Howells RXRPC_SERVER_LISTENING, /* server listening for connections */ 65210f0353SDavid Howells RXRPC_SERVER_LISTEN_DISABLED, /* server listening disabled */ 6617926a79SDavid Howells RXRPC_CLOSE, /* socket is being closed */ 6717926a79SDavid Howells }; 6817926a79SDavid Howells 6917926a79SDavid Howells /* 702baec2c3SDavid Howells * Per-network namespace data. 712baec2c3SDavid Howells */ 722baec2c3SDavid Howells struct rxrpc_net { 732baec2c3SDavid Howells struct proc_dir_entry *proc_net; /* Subdir in /proc/net */ 742baec2c3SDavid Howells u32 epoch; /* Local epoch for detecting local-end reset */ 752baec2c3SDavid Howells struct list_head calls; /* List of calls active in this namespace */ 762baec2c3SDavid Howells rwlock_t call_lock; /* Lock for ->calls */ 772baec2c3SDavid Howells 782baec2c3SDavid Howells struct list_head conn_proc_list; /* List of conns in this namespace for proc */ 792baec2c3SDavid Howells struct list_head service_conns; /* Service conns in this namespace */ 802baec2c3SDavid Howells rwlock_t conn_lock; /* Lock for ->conn_proc_list, ->service_conns */ 812baec2c3SDavid Howells struct delayed_work service_conn_reaper; 822baec2c3SDavid Howells 832baec2c3SDavid Howells unsigned int nr_client_conns; 842baec2c3SDavid Howells unsigned int nr_active_client_conns; 852baec2c3SDavid Howells bool kill_all_client_conns; 862baec2c3SDavid Howells spinlock_t client_conn_cache_lock; /* Lock for ->*_client_conns */ 872baec2c3SDavid Howells spinlock_t client_conn_discard_lock; /* Prevent multiple discarders */ 882baec2c3SDavid Howells struct list_head waiting_client_conns; 892baec2c3SDavid Howells struct list_head active_client_conns; 902baec2c3SDavid Howells struct list_head idle_client_conns; 912baec2c3SDavid Howells struct delayed_work client_conn_reaper; 922baec2c3SDavid Howells 932baec2c3SDavid Howells struct list_head local_endpoints; 942baec2c3SDavid Howells struct mutex local_mutex; /* Lock for ->local_endpoints */ 952baec2c3SDavid Howells 962baec2c3SDavid Howells spinlock_t peer_hash_lock; /* Lock for ->peer_hash */ 972baec2c3SDavid Howells DECLARE_HASHTABLE (peer_hash, 10); 982baec2c3SDavid Howells }; 992baec2c3SDavid Howells 1002baec2c3SDavid Howells /* 10100e90712SDavid Howells * Service backlog preallocation. 10200e90712SDavid Howells * 10300e90712SDavid Howells * This contains circular buffers of preallocated peers, connections and calls 10400e90712SDavid Howells * for incoming service calls and their head and tail pointers. This allows 10500e90712SDavid Howells * calls to be set up in the data_ready handler, thereby avoiding the need to 10600e90712SDavid Howells * shuffle packets around so much. 10700e90712SDavid Howells */ 10800e90712SDavid Howells struct rxrpc_backlog { 10900e90712SDavid Howells unsigned short peer_backlog_head; 11000e90712SDavid Howells unsigned short peer_backlog_tail; 11100e90712SDavid Howells unsigned short conn_backlog_head; 11200e90712SDavid Howells unsigned short conn_backlog_tail; 11300e90712SDavid Howells unsigned short call_backlog_head; 11400e90712SDavid Howells unsigned short call_backlog_tail; 11500e90712SDavid Howells #define RXRPC_BACKLOG_MAX 32 11600e90712SDavid Howells struct rxrpc_peer *peer_backlog[RXRPC_BACKLOG_MAX]; 11700e90712SDavid Howells struct rxrpc_connection *conn_backlog[RXRPC_BACKLOG_MAX]; 11800e90712SDavid Howells struct rxrpc_call *call_backlog[RXRPC_BACKLOG_MAX]; 11900e90712SDavid Howells }; 12000e90712SDavid Howells 12100e90712SDavid Howells /* 12217926a79SDavid Howells * RxRPC socket definition 12317926a79SDavid Howells */ 12417926a79SDavid Howells struct rxrpc_sock { 12517926a79SDavid Howells /* WARNING: sk has to be the first member */ 12617926a79SDavid Howells struct sock sk; 127d001648eSDavid Howells rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */ 12800e90712SDavid Howells rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */ 12917926a79SDavid Howells struct rxrpc_local *local; /* local endpoint */ 13000e90712SDavid Howells struct rxrpc_backlog *backlog; /* Preallocation for services */ 131248f219cSDavid Howells spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */ 132248f219cSDavid Howells struct list_head sock_calls; /* List of calls owned by this socket */ 133248f219cSDavid Howells struct list_head to_be_accepted; /* calls awaiting acceptance */ 134248f219cSDavid Howells struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */ 135248f219cSDavid Howells rwlock_t recvmsg_lock; /* Lock for recvmsg_q */ 13617926a79SDavid Howells struct key *key; /* security for this socket */ 13717926a79SDavid Howells struct key *securities; /* list of server security descriptors */ 13800e90712SDavid Howells struct rb_root calls; /* User ID -> call mapping */ 13917926a79SDavid Howells unsigned long flags; 1402341e077SDavid Howells #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ 14117926a79SDavid Howells rwlock_t call_lock; /* lock for calls */ 14217926a79SDavid Howells u32 min_sec_level; /* minimum security level */ 14317926a79SDavid Howells #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT 144cc8feb8eSDavid Howells bool exclusive; /* Exclusive connection for a client socket */ 145cc8feb8eSDavid Howells sa_family_t family; /* Protocol family created with */ 14617926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 1472341e077SDavid Howells struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ 14817926a79SDavid Howells }; 14917926a79SDavid Howells 15017926a79SDavid Howells #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) 15117926a79SDavid Howells 15217926a79SDavid Howells /* 1530d12f8a4SDavid Howells * CPU-byteorder normalised Rx packet header. 1540d12f8a4SDavid Howells */ 1550d12f8a4SDavid Howells struct rxrpc_host_header { 1560d12f8a4SDavid Howells u32 epoch; /* client boot timestamp */ 1570d12f8a4SDavid Howells u32 cid; /* connection and channel ID */ 1580d12f8a4SDavid Howells u32 callNumber; /* call ID (0 for connection-level packets) */ 1590d12f8a4SDavid Howells u32 seq; /* sequence number of pkt in call stream */ 1600d12f8a4SDavid Howells u32 serial; /* serial number of pkt sent to network */ 1610d12f8a4SDavid Howells u8 type; /* packet type */ 1620d12f8a4SDavid Howells u8 flags; /* packet flags */ 1630d12f8a4SDavid Howells u8 userStatus; /* app-layer defined status */ 1640d12f8a4SDavid Howells u8 securityIndex; /* security protocol ID */ 1650d12f8a4SDavid Howells union { 1660d12f8a4SDavid Howells u16 _rsvd; /* reserved */ 1670d12f8a4SDavid Howells u16 cksum; /* kerberos security checksum */ 1680d12f8a4SDavid Howells }; 1690d12f8a4SDavid Howells u16 serviceId; /* service ID */ 1700d12f8a4SDavid Howells } __packed; 1710d12f8a4SDavid Howells 1720d12f8a4SDavid Howells /* 17317926a79SDavid Howells * RxRPC socket buffer private variables 17417926a79SDavid Howells * - max 48 bytes (struct sk_buff::cb) 17517926a79SDavid Howells */ 17617926a79SDavid Howells struct rxrpc_skb_priv { 177248f219cSDavid Howells union { 178248f219cSDavid Howells u8 nr_jumbo; /* Number of jumbo subpackets */ 179248f219cSDavid Howells }; 18017926a79SDavid Howells union { 18117926a79SDavid Howells int remain; /* amount of space remaining for next write */ 18217926a79SDavid Howells }; 18317926a79SDavid Howells 1840d12f8a4SDavid Howells struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ 18517926a79SDavid Howells }; 18617926a79SDavid Howells 18717926a79SDavid Howells #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) 18817926a79SDavid Howells 18917926a79SDavid Howells /* 19017926a79SDavid Howells * RxRPC security module interface 19117926a79SDavid Howells */ 19217926a79SDavid Howells struct rxrpc_security { 19317926a79SDavid Howells const char *name; /* name of this service */ 19417926a79SDavid Howells u8 security_index; /* security type provided */ 19517926a79SDavid Howells 196648af7fcSDavid Howells /* Initialise a security service */ 197648af7fcSDavid Howells int (*init)(void); 198648af7fcSDavid Howells 199648af7fcSDavid Howells /* Clean up a security service */ 200648af7fcSDavid Howells void (*exit)(void); 201648af7fcSDavid Howells 20217926a79SDavid Howells /* initialise a connection's security */ 20317926a79SDavid Howells int (*init_connection_security)(struct rxrpc_connection *); 20417926a79SDavid Howells 20517926a79SDavid Howells /* prime a connection's packet security */ 206a263629dSHerbert Xu int (*prime_packet_security)(struct rxrpc_connection *); 20717926a79SDavid Howells 20817926a79SDavid Howells /* impose security on a packet */ 209a263629dSHerbert Xu int (*secure_packet)(struct rxrpc_call *, 21017926a79SDavid Howells struct sk_buff *, 21117926a79SDavid Howells size_t, 21217926a79SDavid Howells void *); 21317926a79SDavid Howells 21417926a79SDavid Howells /* verify the security on a received packet */ 2155a42976dSDavid Howells int (*verify_packet)(struct rxrpc_call *, struct sk_buff *, 216248f219cSDavid Howells unsigned int, unsigned int, rxrpc_seq_t, u16); 217248f219cSDavid Howells 218248f219cSDavid Howells /* Locate the data in a received packet that has been verified. */ 219248f219cSDavid Howells void (*locate_data)(struct rxrpc_call *, struct sk_buff *, 220248f219cSDavid Howells unsigned int *, unsigned int *); 22117926a79SDavid Howells 22217926a79SDavid Howells /* issue a challenge */ 22317926a79SDavid Howells int (*issue_challenge)(struct rxrpc_connection *); 22417926a79SDavid Howells 22517926a79SDavid Howells /* respond to a challenge */ 22617926a79SDavid Howells int (*respond_to_challenge)(struct rxrpc_connection *, 22717926a79SDavid Howells struct sk_buff *, 22817926a79SDavid Howells u32 *); 22917926a79SDavid Howells 23017926a79SDavid Howells /* verify a response */ 23117926a79SDavid Howells int (*verify_response)(struct rxrpc_connection *, 23217926a79SDavid Howells struct sk_buff *, 23317926a79SDavid Howells u32 *); 23417926a79SDavid Howells 23517926a79SDavid Howells /* clear connection security */ 23617926a79SDavid Howells void (*clear)(struct rxrpc_connection *); 23717926a79SDavid Howells }; 23817926a79SDavid Howells 23917926a79SDavid Howells /* 2404f95dd78SDavid Howells * RxRPC local transport endpoint description 2414f95dd78SDavid Howells * - owned by a single AF_RXRPC socket 2424f95dd78SDavid Howells * - pointed to by transport socket struct sk_user_data 24317926a79SDavid Howells */ 24417926a79SDavid Howells struct rxrpc_local { 2454f95dd78SDavid Howells struct rcu_head rcu; 2464f95dd78SDavid Howells atomic_t usage; 2472baec2c3SDavid Howells struct rxrpc_net *rxnet; /* The network ns in which this resides */ 2484f95dd78SDavid Howells struct list_head link; 24917926a79SDavid Howells struct socket *socket; /* my UDP socket */ 2504f95dd78SDavid Howells struct work_struct processor; 2511e9e5c95SDavid Howells struct rxrpc_sock __rcu *service; /* Service(s) listening on this endpoint */ 25217926a79SDavid Howells struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ 25317926a79SDavid Howells struct sk_buff_head reject_queue; /* packets awaiting rejection */ 25444ba0698SDavid Howells struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */ 255999b69f8SDavid Howells struct rb_root client_conns; /* Client connections by socket params */ 256999b69f8SDavid Howells spinlock_t client_conns_lock; /* Lock for client_conns */ 25717926a79SDavid Howells spinlock_t lock; /* access lock */ 25817926a79SDavid Howells rwlock_t services_lock; /* lock for services list */ 25917926a79SDavid Howells int debug_id; /* debug ID for printks */ 2604f95dd78SDavid Howells bool dead; 26117926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 26217926a79SDavid Howells }; 26317926a79SDavid Howells 26417926a79SDavid Howells /* 26517926a79SDavid Howells * RxRPC remote transport endpoint definition 266be6e6707SDavid Howells * - matched by local endpoint, remote port, address and protocol type 26717926a79SDavid Howells */ 26817926a79SDavid Howells struct rxrpc_peer { 269be6e6707SDavid Howells struct rcu_head rcu; /* This must be first */ 270be6e6707SDavid Howells atomic_t usage; 271be6e6707SDavid Howells unsigned long hash_key; 272be6e6707SDavid Howells struct hlist_node hash_link; 273be6e6707SDavid Howells struct rxrpc_local *local; 274f66d7490SDavid Howells struct hlist_head error_targets; /* targets for net error distribution */ 275f66d7490SDavid Howells struct work_struct error_distributor; 276aa390bbeSDavid Howells struct rb_root service_conns; /* Service connections */ 2778496af50SDavid Howells seqlock_t service_conn_lock; 27817926a79SDavid Howells spinlock_t lock; /* access lock */ 27995c96174SEric Dumazet unsigned int if_mtu; /* interface MTU for this peer */ 28095c96174SEric Dumazet unsigned int mtu; /* network MTU for this peer */ 28195c96174SEric Dumazet unsigned int maxdata; /* data size (MTU - hdrsize) */ 28217926a79SDavid Howells unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ 28317926a79SDavid Howells int debug_id; /* debug ID for printks */ 284f66d7490SDavid Howells int error_report; /* Net (+0) or local (+1000000) to distribute */ 285f66d7490SDavid Howells #define RXRPC_LOCAL_ERROR_OFFSET 1000000 28617926a79SDavid Howells struct sockaddr_rxrpc srx; /* remote address */ 28717926a79SDavid Howells 28817926a79SDavid Howells /* calculated RTT cache */ 28917926a79SDavid Howells #define RXRPC_RTT_CACHE_SIZE 32 2900d4b103cSDavid Howells ktime_t rtt_last_req; /* Time of last RTT request */ 291cf1a6474SDavid Howells u64 rtt; /* Current RTT estimate (in nS) */ 292cf1a6474SDavid Howells u64 rtt_sum; /* Sum of cache contents */ 293cf1a6474SDavid Howells u64 rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* Determined RTT cache */ 294cf1a6474SDavid Howells u8 rtt_cursor; /* next entry at which to insert */ 295cf1a6474SDavid Howells u8 rtt_usage; /* amount of cache actually used */ 29617926a79SDavid Howells }; 29717926a79SDavid Howells 29817926a79SDavid Howells /* 29919ffa01cSDavid Howells * Keys for matching a connection. 30019ffa01cSDavid Howells */ 30119ffa01cSDavid Howells struct rxrpc_conn_proto { 302e8d70ce1SDavid Howells union { 303e8d70ce1SDavid Howells struct { 30419ffa01cSDavid Howells u32 epoch; /* epoch of this connection */ 30519ffa01cSDavid Howells u32 cid; /* connection ID */ 306e8d70ce1SDavid Howells }; 307e8d70ce1SDavid Howells u64 index_key; 30819ffa01cSDavid Howells }; 30919ffa01cSDavid Howells }; 31019ffa01cSDavid Howells 31119ffa01cSDavid Howells struct rxrpc_conn_parameters { 31219ffa01cSDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 31319ffa01cSDavid Howells struct rxrpc_peer *peer; /* Remote endpoint */ 31419ffa01cSDavid Howells struct key *key; /* Security details */ 31519ffa01cSDavid Howells bool exclusive; /* T if conn is exclusive */ 31619ffa01cSDavid Howells u16 service_id; /* Service ID for this connection */ 31719ffa01cSDavid Howells u32 security_level; /* Security level selected */ 31819ffa01cSDavid Howells }; 31919ffa01cSDavid Howells 32019ffa01cSDavid Howells /* 321bba304dbSDavid Howells * Bits in the connection flags. 322bba304dbSDavid Howells */ 323bba304dbSDavid Howells enum rxrpc_conn_flag { 324bba304dbSDavid Howells RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ 325001c1122SDavid Howells RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ 326001c1122SDavid Howells RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */ 32745025bceSDavid Howells RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */ 32845025bceSDavid Howells RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ 32945025bceSDavid Howells RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */ 330bba304dbSDavid Howells }; 331bba304dbSDavid Howells 332bba304dbSDavid Howells /* 333bba304dbSDavid Howells * Events that can be raised upon a connection. 334bba304dbSDavid Howells */ 335bba304dbSDavid Howells enum rxrpc_conn_event { 336bba304dbSDavid Howells RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ 337bba304dbSDavid Howells }; 338bba304dbSDavid Howells 339bba304dbSDavid Howells /* 34045025bceSDavid Howells * The connection cache state. 34145025bceSDavid Howells */ 34245025bceSDavid Howells enum rxrpc_conn_cache_state { 34345025bceSDavid Howells RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */ 34445025bceSDavid Howells RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */ 34545025bceSDavid Howells RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */ 34645025bceSDavid Howells RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */ 34745025bceSDavid Howells RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */ 348363deeabSDavid Howells RXRPC_CONN__NR_CACHE_STATES 34945025bceSDavid Howells }; 35045025bceSDavid Howells 35145025bceSDavid Howells /* 352bba304dbSDavid Howells * The connection protocol state. 353bba304dbSDavid Howells */ 354bba304dbSDavid Howells enum rxrpc_conn_proto_state { 355bba304dbSDavid Howells RXRPC_CONN_UNUSED, /* Connection not yet attempted */ 356bba304dbSDavid Howells RXRPC_CONN_CLIENT, /* Client connection */ 35700e90712SDavid Howells RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ 358bba304dbSDavid Howells RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ 359bba304dbSDavid Howells RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ 360bba304dbSDavid Howells RXRPC_CONN_SERVICE, /* Service secured connection */ 361bba304dbSDavid Howells RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */ 362bba304dbSDavid Howells RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */ 363bba304dbSDavid Howells RXRPC_CONN__NR_STATES 364bba304dbSDavid Howells }; 365bba304dbSDavid Howells 366bba304dbSDavid Howells /* 36717926a79SDavid Howells * RxRPC connection definition 368aa390bbeSDavid Howells * - matched by { local, peer, epoch, conn_id, direction } 36917926a79SDavid Howells * - each connection can only handle four simultaneous calls 37017926a79SDavid Howells */ 37117926a79SDavid Howells struct rxrpc_connection { 37219ffa01cSDavid Howells struct rxrpc_conn_proto proto; 37319ffa01cSDavid Howells struct rxrpc_conn_parameters params; 37419ffa01cSDavid Howells 37545025bceSDavid Howells atomic_t usage; 37645025bceSDavid Howells struct rcu_head rcu; 37745025bceSDavid Howells struct list_head cache_link; 378a1399f8bSDavid Howells 37945025bceSDavid Howells spinlock_t channel_lock; 38045025bceSDavid Howells unsigned char active_chans; /* Mask of active channels */ 38145025bceSDavid Howells #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1) 38245025bceSDavid Howells struct list_head waiting_calls; /* Calls waiting for channels */ 383a1399f8bSDavid Howells struct rxrpc_channel { 384a1399f8bSDavid Howells struct rxrpc_call __rcu *call; /* Active call */ 385a1399f8bSDavid Howells u32 call_id; /* ID of current call */ 386a1399f8bSDavid Howells u32 call_counter; /* Call ID counter */ 387a1399f8bSDavid Howells u32 last_call; /* ID of last call */ 38818bfeba5SDavid Howells u8 last_type; /* Type of last packet */ 38918bfeba5SDavid Howells u16 last_service_id; 39018bfeba5SDavid Howells union { 39118bfeba5SDavid Howells u32 last_seq; 39218bfeba5SDavid Howells u32 last_abort; 39318bfeba5SDavid Howells }; 394a1399f8bSDavid Howells } channels[RXRPC_MAXCALLS]; 395999b69f8SDavid Howells 39617926a79SDavid Howells struct work_struct processor; /* connection event processor */ 397999b69f8SDavid Howells union { 398999b69f8SDavid Howells struct rb_node client_node; /* Node in local->client_conns */ 399aa390bbeSDavid Howells struct rb_node service_node; /* Node in peer->service_conns */ 400999b69f8SDavid Howells }; 4014d028b2cSDavid Howells struct list_head proc_link; /* link in procfs list */ 40217926a79SDavid Howells struct list_head link; /* link in master connection list */ 40317926a79SDavid Howells struct sk_buff_head rx_queue; /* received conn-level packets */ 404648af7fcSDavid Howells const struct rxrpc_security *security; /* applied security module */ 40517926a79SDavid Howells struct key *server_key; /* security for this service */ 4061afe593bSHerbert Xu struct crypto_skcipher *cipher; /* encryption handle */ 40717926a79SDavid Howells struct rxrpc_crypt csum_iv; /* packet checksum base */ 4084a3388c8SDavid Howells unsigned long flags; 40917926a79SDavid Howells unsigned long events; 410f51b4480SDavid Howells unsigned long idle_timestamp; /* Time at which last became idle */ 41117926a79SDavid Howells spinlock_t state_lock; /* state-change lock */ 412cf13258fSDavid Howells enum rxrpc_conn_cache_state cache_state; 413cf13258fSDavid Howells enum rxrpc_conn_proto_state state; /* current state of connection */ 414dc44b3a0SDavid Howells u32 local_abort; /* local abort code */ 415dc44b3a0SDavid Howells u32 remote_abort; /* remote abort code */ 41617926a79SDavid Howells int debug_id; /* debug ID for printks */ 41717926a79SDavid Howells atomic_t serial; /* packet serial number counter */ 418563ea7d5SDavid Howells unsigned int hi_serial; /* highest serial number received */ 41917926a79SDavid Howells u32 security_nonce; /* response re-use preventer */ 4205a924b89SDavid Howells u8 size_align; /* data size alignment (for security) */ 4215a924b89SDavid Howells u8 security_size; /* security header size */ 42217926a79SDavid Howells u8 security_ix; /* security type */ 42317926a79SDavid Howells u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ 42417926a79SDavid Howells }; 42517926a79SDavid Howells 42617926a79SDavid Howells /* 4275b8848d1SDavid Howells * Flags in call->flags. 4285b8848d1SDavid Howells */ 4295b8848d1SDavid Howells enum rxrpc_call_flag { 4305b8848d1SDavid Howells RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ 4315b8848d1SDavid Howells RXRPC_CALL_HAS_USERID, /* has a user ID attached */ 432dabe5a79SDavid Howells RXRPC_CALL_IS_SERVICE, /* Call is service call */ 43345025bceSDavid Howells RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ 434248f219cSDavid Howells RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ 435248f219cSDavid Howells RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ 436a5af7e1fSDavid Howells RXRPC_CALL_SEND_PING, /* A ping will need to be sent */ 4378e83134dSDavid Howells RXRPC_CALL_PINGING, /* Ping in process */ 43857494343SDavid Howells RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */ 4395b8848d1SDavid Howells }; 4405b8848d1SDavid Howells 4415b8848d1SDavid Howells /* 4425b8848d1SDavid Howells * Events that can be raised on a call. 4435b8848d1SDavid Howells */ 4445b8848d1SDavid Howells enum rxrpc_call_event { 4454c198ad1SDavid Howells RXRPC_CALL_EV_ACK, /* need to generate ACK */ 4464c198ad1SDavid Howells RXRPC_CALL_EV_ABORT, /* need to generate abort */ 447248f219cSDavid Howells RXRPC_CALL_EV_TIMER, /* Timer expired */ 4484c198ad1SDavid Howells RXRPC_CALL_EV_RESEND, /* Tx resend required */ 449a5af7e1fSDavid Howells RXRPC_CALL_EV_PING, /* Ping send required */ 4505b8848d1SDavid Howells }; 4515b8848d1SDavid Howells 4525b8848d1SDavid Howells /* 4535b8848d1SDavid Howells * The states that a call can be in. 4545b8848d1SDavid Howells */ 4555b8848d1SDavid Howells enum rxrpc_call_state { 456999b69f8SDavid Howells RXRPC_CALL_UNINITIALISED, 457999b69f8SDavid Howells RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ 4585b8848d1SDavid Howells RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ 4595b8848d1SDavid Howells RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ 4605b8848d1SDavid Howells RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ 46100e90712SDavid Howells RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ 4625b8848d1SDavid Howells RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ 4635b8848d1SDavid Howells RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ 4645b8848d1SDavid Howells RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ 4655b8848d1SDavid Howells RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ 4665b8848d1SDavid Howells RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ 4675b8848d1SDavid Howells RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ 468f5c17aaeSDavid Howells RXRPC_CALL_COMPLETE, /* - call complete */ 469f5c17aaeSDavid Howells NR__RXRPC_CALL_STATES 470f5c17aaeSDavid Howells }; 471f5c17aaeSDavid Howells 472f5c17aaeSDavid Howells /* 473f5c17aaeSDavid Howells * Call completion condition (state == RXRPC_CALL_COMPLETE). 474f5c17aaeSDavid Howells */ 475f5c17aaeSDavid Howells enum rxrpc_call_completion { 476f5c17aaeSDavid Howells RXRPC_CALL_SUCCEEDED, /* - Normal termination */ 4775b8848d1SDavid Howells RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ 4785b8848d1SDavid Howells RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ 479f5c17aaeSDavid Howells RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */ 4805b8848d1SDavid Howells RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ 481f5c17aaeSDavid Howells NR__RXRPC_CALL_COMPLETIONS 4825b8848d1SDavid Howells }; 4835b8848d1SDavid Howells 4845b8848d1SDavid Howells /* 48557494343SDavid Howells * Call Tx congestion management modes. 48657494343SDavid Howells */ 48757494343SDavid Howells enum rxrpc_congest_mode { 48857494343SDavid Howells RXRPC_CALL_SLOW_START, 48957494343SDavid Howells RXRPC_CALL_CONGEST_AVOIDANCE, 49057494343SDavid Howells RXRPC_CALL_PACKET_LOSS, 49157494343SDavid Howells RXRPC_CALL_FAST_RETRANSMIT, 49257494343SDavid Howells NR__RXRPC_CONGEST_MODES 49357494343SDavid Howells }; 49457494343SDavid Howells 49557494343SDavid Howells /* 49617926a79SDavid Howells * RxRPC call definition 49717926a79SDavid Howells * - matched by { connection, call_id } 49817926a79SDavid Howells */ 49917926a79SDavid Howells struct rxrpc_call { 500dee46364SDavid Howells struct rcu_head rcu; 50117926a79SDavid Howells struct rxrpc_connection *conn; /* connection carrying call */ 502df5d8bf7SDavid Howells struct rxrpc_peer *peer; /* Peer record for remote address */ 5038d94aa38SDavid Howells struct rxrpc_sock __rcu *socket; /* socket responsible */ 504540b1c48SDavid Howells struct mutex user_mutex; /* User access mutex */ 505df0adc78SDavid Howells ktime_t ack_at; /* When deferred ACK needs to happen */ 506df0adc78SDavid Howells ktime_t resend_at; /* When next resend needs to happen */ 507a5af7e1fSDavid Howells ktime_t ping_at; /* When next to send a ping */ 508df0adc78SDavid Howells ktime_t expire_at; /* When the call times out */ 509248f219cSDavid Howells struct timer_list timer; /* Combined event timer */ 510248f219cSDavid Howells struct work_struct processor; /* Event processor */ 511d001648eSDavid Howells rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ 51217926a79SDavid Howells struct list_head link; /* link in master call list */ 51345025bceSDavid Howells struct list_head chan_wait_link; /* Link in conn->waiting_calls */ 514f66d7490SDavid Howells struct hlist_node error_link; /* link in error distribution list */ 515248f219cSDavid Howells struct list_head accept_link; /* Link in rx->acceptq */ 516248f219cSDavid Howells struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ 517248f219cSDavid Howells struct list_head sock_link; /* Link in rx->sock_calls */ 518248f219cSDavid Howells struct rb_node sock_node; /* Node in rx->calls */ 51917926a79SDavid Howells struct sk_buff *tx_pending; /* Tx socket buffer being filled */ 52045025bceSDavid Howells wait_queue_head_t waitq; /* Wait queue for channel or Tx */ 521a263629dSHerbert Xu __be32 crypto_buf[2]; /* Temporary packet crypto buffer */ 52217926a79SDavid Howells unsigned long user_call_ID; /* user-defined call ID */ 52317926a79SDavid Howells unsigned long flags; 52417926a79SDavid Howells unsigned long events; 52517926a79SDavid Howells spinlock_t lock; 52617926a79SDavid Howells rwlock_t state_lock; /* lock for state transition */ 527f5c17aaeSDavid Howells u32 abort_code; /* Local/remote abort code */ 528f5c17aaeSDavid Howells int error; /* Local error incurred */ 529cf13258fSDavid Howells enum rxrpc_call_state state; /* current state of call */ 530cf13258fSDavid Howells enum rxrpc_call_completion completion; /* Call completion condition */ 53117926a79SDavid Howells atomic_t usage; 532dabe5a79SDavid Howells u16 service_id; /* service ID */ 533278ac0cdSDavid Howells u8 security_ix; /* Security type */ 534dabe5a79SDavid Howells u32 call_id; /* call ID on connection */ 535dabe5a79SDavid Howells u32 cid; /* connection ID plus channel index */ 536dabe5a79SDavid Howells int debug_id; /* debug ID for printks */ 5378e83134dSDavid Howells unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ 5388e83134dSDavid Howells unsigned short rx_pkt_len; /* Current recvmsg packet len */ 53917926a79SDavid Howells 540248f219cSDavid Howells /* Rx/Tx circular buffer, depending on phase. 541248f219cSDavid Howells * 542248f219cSDavid Howells * In the Rx phase, packets are annotated with 0 or the number of the 543248f219cSDavid Howells * segment of a jumbo packet each buffer refers to. There can be up to 544248f219cSDavid Howells * 47 segments in a maximum-size UDP packet. 545248f219cSDavid Howells * 546248f219cSDavid Howells * In the Tx phase, packets are annotated with which buffers have been 547248f219cSDavid Howells * acked. 54817926a79SDavid Howells */ 549248f219cSDavid Howells #define RXRPC_RXTX_BUFF_SIZE 64 550248f219cSDavid Howells #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1) 55175e42126SDavid Howells #define RXRPC_INIT_RX_WINDOW_SIZE 32 552248f219cSDavid Howells struct sk_buff **rxtx_buffer; 553248f219cSDavid Howells u8 *rxtx_annotations; 554248f219cSDavid Howells #define RXRPC_TX_ANNO_ACK 0 555248f219cSDavid Howells #define RXRPC_TX_ANNO_UNACK 1 556248f219cSDavid Howells #define RXRPC_TX_ANNO_NAK 2 557248f219cSDavid Howells #define RXRPC_TX_ANNO_RETRANS 3 558f07373eaSDavid Howells #define RXRPC_TX_ANNO_MASK 0x03 55970790dbeSDavid Howells #define RXRPC_TX_ANNO_LAST 0x04 56070790dbeSDavid Howells #define RXRPC_TX_ANNO_RESENT 0x08 56170790dbeSDavid Howells 562248f219cSDavid Howells #define RXRPC_RX_ANNO_JUMBO 0x3f /* Jumbo subpacket number + 1 if not zero */ 563248f219cSDavid Howells #define RXRPC_RX_ANNO_JLAST 0x40 /* Set if last element of a jumbo packet */ 564248f219cSDavid Howells #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ 565248f219cSDavid Howells rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but 566248f219cSDavid Howells * not hard-ACK'd packet follows this. 567248f219cSDavid Howells */ 568248f219cSDavid Howells rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ 56957494343SDavid Howells 57057494343SDavid Howells /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS 57157494343SDavid Howells * is fixed, we keep these numbers in terms of segments (ie. DATA 57257494343SDavid Howells * packets) rather than bytes. 57357494343SDavid Howells */ 57457494343SDavid Howells #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN 57557494343SDavid Howells u8 cong_cwnd; /* Congestion window size */ 57657494343SDavid Howells u8 cong_extra; /* Extra to send for congestion management */ 57757494343SDavid Howells u8 cong_ssthresh; /* Slow-start threshold */ 57857494343SDavid Howells enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */ 57957494343SDavid Howells u8 cong_dup_acks; /* Count of ACKs showing missing packets */ 58057494343SDavid Howells u8 cong_cumul_acks; /* Cumulative ACK count */ 58157494343SDavid Howells ktime_t cong_tstamp; /* Last time cwnd was changed */ 58257494343SDavid Howells 583248f219cSDavid Howells rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not 584248f219cSDavid Howells * consumed packet follows this. 585248f219cSDavid Howells */ 586248f219cSDavid Howells rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */ 587248f219cSDavid Howells rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */ 588248f219cSDavid Howells u8 rx_winsize; /* Size of Rx window */ 589248f219cSDavid Howells u8 tx_winsize; /* Maximum size of Tx window */ 59071f3ca40SDavid Howells bool tx_phase; /* T if transmission phase, F if receive phase */ 59175e42126SDavid Howells u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */ 59217926a79SDavid Howells 59317926a79SDavid Howells /* receive-phase ACK management */ 5944e36a95eSDavid Howells u8 ackr_reason; /* reason to ACK */ 595563ea7d5SDavid Howells u16 ackr_skew; /* skew on packet being ACK'd */ 5960d12f8a4SDavid Howells rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ 597248f219cSDavid Howells rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ 598805b21b9SDavid Howells rxrpc_seq_t ackr_consumed; /* Highest packet shown consumed */ 599805b21b9SDavid Howells rxrpc_seq_t ackr_seen; /* Highest packet shown seen */ 600a5af7e1fSDavid Howells 601a5af7e1fSDavid Howells /* ping management */ 602a5af7e1fSDavid Howells rxrpc_serial_t ping_serial; /* Last ping sent */ 603a5af7e1fSDavid Howells ktime_t ping_time; /* Time last ping sent */ 60417926a79SDavid Howells 605248f219cSDavid Howells /* transmission-phase ACK management */ 60657494343SDavid Howells ktime_t acks_latest_ts; /* Timestamp of latest ACK received */ 607248f219cSDavid Howells rxrpc_serial_t acks_latest; /* serial number of latest ACK received */ 60831a1b989SDavid Howells rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */ 60931a1b989SDavid Howells }; 61031a1b989SDavid Howells 61131a1b989SDavid Howells /* 61257494343SDavid Howells * Summary of a new ACK and the changes it made to the Tx buffer packet states. 61331a1b989SDavid Howells */ 61431a1b989SDavid Howells struct rxrpc_ack_summary { 61531a1b989SDavid Howells u8 ack_reason; 61631a1b989SDavid Howells u8 nr_acks; /* Number of ACKs in packet */ 61731a1b989SDavid Howells u8 nr_nacks; /* Number of NACKs in packet */ 61831a1b989SDavid Howells u8 nr_new_acks; /* Number of new ACKs in packet */ 61931a1b989SDavid Howells u8 nr_new_nacks; /* Number of new NACKs in packet */ 62031a1b989SDavid Howells u8 nr_rot_new_acks; /* Number of rotated new ACKs */ 62131a1b989SDavid Howells bool new_low_nack; /* T if new low NACK found */ 62257494343SDavid Howells bool retrans_timeo; /* T if reTx due to timeout happened */ 62357494343SDavid Howells u8 flight_size; /* Number of unreceived transmissions */ 62457494343SDavid Howells /* Place to stash values for tracing */ 62557494343SDavid Howells enum rxrpc_congest_mode mode:8; 62657494343SDavid Howells u8 cwnd; 62757494343SDavid Howells u8 ssthresh; 62857494343SDavid Howells u8 dup_acks; 62957494343SDavid Howells u8 cumulative_acks; 63017926a79SDavid Howells }; 63117926a79SDavid Howells 632df844fd4SDavid Howells #include <trace/events/rxrpc.h> 633df844fd4SDavid Howells 63417926a79SDavid Howells /* 635651350d1SDavid Howells * af_rxrpc.c 63617926a79SDavid Howells */ 63771f3ca40SDavid Howells extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs; 638651350d1SDavid Howells extern atomic_t rxrpc_debug_id; 639651350d1SDavid Howells extern struct workqueue_struct *rxrpc_workqueue; 64017926a79SDavid Howells 64117926a79SDavid Howells /* 6420d81a51aSDavid Howells * call_accept.c 64317926a79SDavid Howells */ 64400e90712SDavid Howells int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); 64500e90712SDavid Howells void rxrpc_discard_prealloc(struct rxrpc_sock *); 646248f219cSDavid Howells struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *, 647248f219cSDavid Howells struct rxrpc_connection *, 648248f219cSDavid Howells struct sk_buff *); 6494f95dd78SDavid Howells void rxrpc_accept_incoming_calls(struct rxrpc_local *); 650d001648eSDavid Howells struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long, 651d001648eSDavid Howells rxrpc_notify_rx_t); 652c1b1203dSJoe Perches int rxrpc_reject_call(struct rxrpc_sock *); 65317926a79SDavid Howells 65417926a79SDavid Howells /* 6550d81a51aSDavid Howells * call_event.c 65617926a79SDavid Howells */ 6579749fd2bSDavid Howells void __rxrpc_set_timer(struct rxrpc_call *, enum rxrpc_timer_trace, ktime_t); 658df0adc78SDavid Howells void rxrpc_set_timer(struct rxrpc_call *, enum rxrpc_timer_trace, ktime_t); 6599c7ad434SDavid Howells void rxrpc_propose_ACK(struct rxrpc_call *, u8, u16, u32, bool, bool, 6609c7ad434SDavid Howells enum rxrpc_propose_ack_trace); 661c1b1203dSJoe Perches void rxrpc_process_call(struct work_struct *); 66217926a79SDavid Howells 66317926a79SDavid Howells /* 6640d81a51aSDavid Howells * call_object.c 66517926a79SDavid Howells */ 666f5c17aaeSDavid Howells extern const char *const rxrpc_call_states[]; 667f5c17aaeSDavid Howells extern const char *const rxrpc_call_completions[]; 668dad8aff7SDavid Howells extern unsigned int rxrpc_max_call_lifetime; 66917926a79SDavid Howells extern struct kmem_cache *rxrpc_call_jar; 67017926a79SDavid Howells 6712341e077SDavid Howells struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); 67200e90712SDavid Howells struct rxrpc_call *rxrpc_alloc_call(gfp_t); 6732341e077SDavid Howells struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, 67419ffa01cSDavid Howells struct rxrpc_conn_parameters *, 675999b69f8SDavid Howells struct sockaddr_rxrpc *, 6762341e077SDavid Howells unsigned long, gfp_t); 677248f219cSDavid Howells void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, 67842886ffeSDavid Howells struct sk_buff *); 6798d94aa38SDavid Howells void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); 680c1b1203dSJoe Perches void rxrpc_release_calls_on_socket(struct rxrpc_sock *); 6818d94aa38SDavid Howells bool __rxrpc_queue_call(struct rxrpc_call *); 6828d94aa38SDavid Howells bool rxrpc_queue_call(struct rxrpc_call *); 683e34d4234SDavid Howells void rxrpc_see_call(struct rxrpc_call *); 684fff72429SDavid Howells void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 685fff72429SDavid Howells void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); 68600e90712SDavid Howells void rxrpc_cleanup_call(struct rxrpc_call *); 6872baec2c3SDavid Howells void rxrpc_destroy_all_calls(struct rxrpc_net *); 68817926a79SDavid Howells 689dabe5a79SDavid Howells static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) 690dabe5a79SDavid Howells { 691dabe5a79SDavid Howells return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); 692dabe5a79SDavid Howells } 693dabe5a79SDavid Howells 694dabe5a79SDavid Howells static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) 695dabe5a79SDavid Howells { 696dabe5a79SDavid Howells return !rxrpc_is_service_call(call); 697dabe5a79SDavid Howells } 698dabe5a79SDavid Howells 69917926a79SDavid Howells /* 700f5c17aaeSDavid Howells * Transition a call to the complete state. 701f5c17aaeSDavid Howells */ 702f5c17aaeSDavid Howells static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call, 703f5c17aaeSDavid Howells enum rxrpc_call_completion compl, 704f5c17aaeSDavid Howells u32 abort_code, 705f5c17aaeSDavid Howells int error) 706f5c17aaeSDavid Howells { 707f5c17aaeSDavid Howells if (call->state < RXRPC_CALL_COMPLETE) { 708f5c17aaeSDavid Howells call->abort_code = abort_code; 709f5c17aaeSDavid Howells call->error = error; 710f5c17aaeSDavid Howells call->completion = compl, 711f5c17aaeSDavid Howells call->state = RXRPC_CALL_COMPLETE; 712c0d058c2SDavid Howells wake_up(&call->waitq); 713f5c17aaeSDavid Howells return true; 714f5c17aaeSDavid Howells } 715f5c17aaeSDavid Howells return false; 716f5c17aaeSDavid Howells } 717f5c17aaeSDavid Howells 718f5c17aaeSDavid Howells static inline bool rxrpc_set_call_completion(struct rxrpc_call *call, 719f5c17aaeSDavid Howells enum rxrpc_call_completion compl, 720f5c17aaeSDavid Howells u32 abort_code, 721f5c17aaeSDavid Howells int error) 722f5c17aaeSDavid Howells { 723e8d6bbb0SDavid Howells bool ret; 724f5c17aaeSDavid Howells 725f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 726f5c17aaeSDavid Howells ret = __rxrpc_set_call_completion(call, compl, abort_code, error); 727f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 728f5c17aaeSDavid Howells return ret; 729f5c17aaeSDavid Howells } 730f5c17aaeSDavid Howells 731f5c17aaeSDavid Howells /* 732f5c17aaeSDavid Howells * Record that a call successfully completed. 733f5c17aaeSDavid Howells */ 734e8d6bbb0SDavid Howells static inline bool __rxrpc_call_completed(struct rxrpc_call *call) 735f5c17aaeSDavid Howells { 736e8d6bbb0SDavid Howells return __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0); 737f5c17aaeSDavid Howells } 738f5c17aaeSDavid Howells 739e8d6bbb0SDavid Howells static inline bool rxrpc_call_completed(struct rxrpc_call *call) 740f5c17aaeSDavid Howells { 741e8d6bbb0SDavid Howells bool ret; 742e8d6bbb0SDavid Howells 743f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 744e8d6bbb0SDavid Howells ret = __rxrpc_call_completed(call); 745f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 746e8d6bbb0SDavid Howells return ret; 747f5c17aaeSDavid Howells } 748f5c17aaeSDavid Howells 749f5c17aaeSDavid Howells /* 750f5c17aaeSDavid Howells * Record that a call is locally aborted. 751f5c17aaeSDavid Howells */ 7525a42976dSDavid Howells static inline bool __rxrpc_abort_call(const char *why, struct rxrpc_call *call, 7535a42976dSDavid Howells rxrpc_seq_t seq, 754f5c17aaeSDavid Howells u32 abort_code, int error) 755f5c17aaeSDavid Howells { 7565a42976dSDavid Howells trace_rxrpc_abort(why, call->cid, call->call_id, seq, 7575a42976dSDavid Howells abort_code, error); 758248f219cSDavid Howells return __rxrpc_set_call_completion(call, RXRPC_CALL_LOCALLY_ABORTED, 759248f219cSDavid Howells abort_code, error); 760f5c17aaeSDavid Howells } 761f5c17aaeSDavid Howells 7625a42976dSDavid Howells static inline bool rxrpc_abort_call(const char *why, struct rxrpc_call *call, 7635a42976dSDavid Howells rxrpc_seq_t seq, u32 abort_code, int error) 764f5c17aaeSDavid Howells { 765f5c17aaeSDavid Howells bool ret; 766f5c17aaeSDavid Howells 767f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 7685a42976dSDavid Howells ret = __rxrpc_abort_call(why, call, seq, abort_code, error); 769f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 770f5c17aaeSDavid Howells return ret; 771f5c17aaeSDavid Howells } 772f5c17aaeSDavid Howells 773f5c17aaeSDavid Howells /* 774fb46f6eeSDavid Howells * Abort a call due to a protocol error. 775fb46f6eeSDavid Howells */ 776fb46f6eeSDavid Howells static inline bool __rxrpc_abort_eproto(struct rxrpc_call *call, 777fb46f6eeSDavid Howells struct sk_buff *skb, 778fb46f6eeSDavid Howells const char *eproto_why, 779fb46f6eeSDavid Howells const char *why, 780fb46f6eeSDavid Howells u32 abort_code) 781fb46f6eeSDavid Howells { 782fb46f6eeSDavid Howells struct rxrpc_skb_priv *sp = rxrpc_skb(skb); 783fb46f6eeSDavid Howells 784fb46f6eeSDavid Howells trace_rxrpc_rx_eproto(call, sp->hdr.serial, eproto_why); 785fb46f6eeSDavid Howells return rxrpc_abort_call(why, call, sp->hdr.seq, abort_code, -EPROTO); 786fb46f6eeSDavid Howells } 787fb46f6eeSDavid Howells 788fb46f6eeSDavid Howells #define rxrpc_abort_eproto(call, skb, eproto_why, abort_why, abort_code) \ 789fb46f6eeSDavid Howells __rxrpc_abort_eproto((call), (skb), tracepoint_string(eproto_why), \ 790fb46f6eeSDavid Howells (abort_why), (abort_code)) 791fb46f6eeSDavid Howells 792fb46f6eeSDavid Howells /* 7934a3388c8SDavid Howells * conn_client.c 7944a3388c8SDavid Howells */ 79545025bceSDavid Howells extern unsigned int rxrpc_max_client_connections; 79645025bceSDavid Howells extern unsigned int rxrpc_reap_client_connections; 79745025bceSDavid Howells extern unsigned int rxrpc_conn_idle_client_expiry; 79845025bceSDavid Howells extern unsigned int rxrpc_conn_idle_client_fast_expiry; 7994a3388c8SDavid Howells extern struct idr rxrpc_client_conn_ids; 8004a3388c8SDavid Howells 801eb9b9d22SDavid Howells void rxrpc_destroy_client_conn_ids(void); 802c6d2b8d7SDavid Howells int rxrpc_connect_call(struct rxrpc_call *, struct rxrpc_conn_parameters *, 803c6d2b8d7SDavid Howells struct sockaddr_rxrpc *, gfp_t); 80445025bceSDavid Howells void rxrpc_expose_client_call(struct rxrpc_call *); 80545025bceSDavid Howells void rxrpc_disconnect_client_call(struct rxrpc_call *); 80645025bceSDavid Howells void rxrpc_put_client_conn(struct rxrpc_connection *); 8072baec2c3SDavid Howells void rxrpc_discard_expired_client_conns(struct work_struct *); 8082baec2c3SDavid Howells void rxrpc_destroy_all_client_connections(struct rxrpc_net *); 8094a3388c8SDavid Howells 8104a3388c8SDavid Howells /* 8110d81a51aSDavid Howells * conn_event.c 8120d81a51aSDavid Howells */ 8130d81a51aSDavid Howells void rxrpc_process_connection(struct work_struct *); 8140d81a51aSDavid Howells 8150d81a51aSDavid Howells /* 8160d81a51aSDavid Howells * conn_object.c 81717926a79SDavid Howells */ 818dad8aff7SDavid Howells extern unsigned int rxrpc_connection_expiry; 81917926a79SDavid Howells 8208496af50SDavid Howells int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 821c6d2b8d7SDavid Howells struct rxrpc_connection *rxrpc_alloc_connection(gfp_t); 8228496af50SDavid Howells struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *, 823aa390bbeSDavid Howells struct sk_buff *); 82445025bceSDavid Howells void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); 825999b69f8SDavid Howells void rxrpc_disconnect_call(struct rxrpc_call *); 82645025bceSDavid Howells void rxrpc_kill_connection(struct rxrpc_connection *); 827363deeabSDavid Howells bool rxrpc_queue_conn(struct rxrpc_connection *); 828363deeabSDavid Howells void rxrpc_see_connection(struct rxrpc_connection *); 829363deeabSDavid Howells void rxrpc_get_connection(struct rxrpc_connection *); 830363deeabSDavid Howells struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *); 831363deeabSDavid Howells void rxrpc_put_service_conn(struct rxrpc_connection *); 8322baec2c3SDavid Howells void rxrpc_service_connection_reaper(struct work_struct *); 8332baec2c3SDavid Howells void rxrpc_destroy_all_connections(struct rxrpc_net *); 83417926a79SDavid Howells 83519ffa01cSDavid Howells static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) 83619ffa01cSDavid Howells { 83719ffa01cSDavid Howells return conn->out_clientflag; 83819ffa01cSDavid Howells } 83919ffa01cSDavid Howells 84019ffa01cSDavid Howells static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) 84119ffa01cSDavid Howells { 842e8d70ce1SDavid Howells return !rxrpc_conn_is_client(conn); 84319ffa01cSDavid Howells } 84419ffa01cSDavid Howells 845f51b4480SDavid Howells static inline void rxrpc_put_connection(struct rxrpc_connection *conn) 846f51b4480SDavid Howells { 84745025bceSDavid Howells if (!conn) 84845025bceSDavid Howells return; 84945025bceSDavid Howells 850363deeabSDavid Howells if (rxrpc_conn_is_client(conn)) 85145025bceSDavid Howells rxrpc_put_client_conn(conn); 852363deeabSDavid Howells else 853363deeabSDavid Howells rxrpc_put_service_conn(conn); 8545acbee46SDavid Howells } 8555acbee46SDavid Howells 85617926a79SDavid Howells /* 8577877a4a4SDavid Howells * conn_service.c 8587877a4a4SDavid Howells */ 8598496af50SDavid Howells struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, 8608496af50SDavid Howells struct sk_buff *); 8612baec2c3SDavid Howells struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t); 862248f219cSDavid Howells void rxrpc_new_incoming_connection(struct rxrpc_connection *, struct sk_buff *); 863001c1122SDavid Howells void rxrpc_unpublish_service_conn(struct rxrpc_connection *); 8647877a4a4SDavid Howells 8657877a4a4SDavid Howells /* 8660d81a51aSDavid Howells * input.c 86717926a79SDavid Howells */ 868676d2369SDavid S. Miller void rxrpc_data_ready(struct sock *); 86917926a79SDavid Howells 87017926a79SDavid Howells /* 8710d81a51aSDavid Howells * insecure.c 87217926a79SDavid Howells */ 8730d81a51aSDavid Howells extern const struct rxrpc_security rxrpc_no_security; 87417926a79SDavid Howells 87517926a79SDavid Howells /* 8760d81a51aSDavid Howells * key.c 87717926a79SDavid Howells */ 87817926a79SDavid Howells extern struct key_type key_type_rxrpc; 87917926a79SDavid Howells extern struct key_type key_type_rxrpc_s; 88017926a79SDavid Howells 881c1b1203dSJoe Perches int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); 882c1b1203dSJoe Perches int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); 883c1b1203dSJoe Perches int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time_t, 884c1b1203dSJoe Perches u32); 88517926a79SDavid Howells 88617926a79SDavid Howells /* 88787563616SDavid Howells * local_event.c 88887563616SDavid Howells */ 8894f95dd78SDavid Howells extern void rxrpc_process_local_events(struct rxrpc_local *); 89087563616SDavid Howells 89187563616SDavid Howells /* 8920d81a51aSDavid Howells * local_object.c 89317926a79SDavid Howells */ 8942baec2c3SDavid Howells struct rxrpc_local *rxrpc_lookup_local(struct net *, const struct sockaddr_rxrpc *); 8954f95dd78SDavid Howells void __rxrpc_put_local(struct rxrpc_local *); 8962baec2c3SDavid Howells void rxrpc_destroy_all_locals(struct rxrpc_net *); 897e0e4d82fSDavid Howells 8984f95dd78SDavid Howells static inline void rxrpc_get_local(struct rxrpc_local *local) 8994f95dd78SDavid Howells { 9004f95dd78SDavid Howells atomic_inc(&local->usage); 9014f95dd78SDavid Howells } 9024f95dd78SDavid Howells 9034f95dd78SDavid Howells static inline 9044f95dd78SDavid Howells struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *local) 9054f95dd78SDavid Howells { 9064f95dd78SDavid Howells return atomic_inc_not_zero(&local->usage) ? local : NULL; 9074f95dd78SDavid Howells } 9084f95dd78SDavid Howells 9094f95dd78SDavid Howells static inline void rxrpc_put_local(struct rxrpc_local *local) 9104f95dd78SDavid Howells { 9115627cc8bSDavid Howells if (local && atomic_dec_and_test(&local->usage)) 9124f95dd78SDavid Howells __rxrpc_put_local(local); 9134f95dd78SDavid Howells } 9144f95dd78SDavid Howells 9155acbee46SDavid Howells static inline void rxrpc_queue_local(struct rxrpc_local *local) 9165acbee46SDavid Howells { 9175acbee46SDavid Howells rxrpc_queue_work(&local->processor); 9185acbee46SDavid Howells } 9195acbee46SDavid Howells 920e0e4d82fSDavid Howells /* 9218e688d9cSDavid Howells * misc.c 9228e688d9cSDavid Howells */ 9230e119b41SDavid Howells extern unsigned int rxrpc_max_backlog __read_mostly; 9248e688d9cSDavid Howells extern unsigned int rxrpc_requested_ack_delay; 9258e688d9cSDavid Howells extern unsigned int rxrpc_soft_ack_delay; 9268e688d9cSDavid Howells extern unsigned int rxrpc_idle_ack_delay; 9278e688d9cSDavid Howells extern unsigned int rxrpc_rx_window_size; 9288e688d9cSDavid Howells extern unsigned int rxrpc_rx_mtu; 9298e688d9cSDavid Howells extern unsigned int rxrpc_rx_jumbo_max; 9300b58b8a1SDavid Howells extern unsigned int rxrpc_resend_timeout; 9318e688d9cSDavid Howells 9328e688d9cSDavid Howells extern const s8 rxrpc_ack_priority[]; 9338e688d9cSDavid Howells 9348e688d9cSDavid Howells /* 9352baec2c3SDavid Howells * net_ns.c 9362baec2c3SDavid Howells */ 9372baec2c3SDavid Howells extern unsigned int rxrpc_net_id; 9382baec2c3SDavid Howells extern struct pernet_operations rxrpc_net_ops; 9392baec2c3SDavid Howells 9402baec2c3SDavid Howells static inline struct rxrpc_net *rxrpc_net(struct net *net) 9412baec2c3SDavid Howells { 9422baec2c3SDavid Howells return net_generic(net, rxrpc_net_id); 9432baec2c3SDavid Howells } 9442baec2c3SDavid Howells 9452baec2c3SDavid Howells /* 9460d81a51aSDavid Howells * output.c 9470d81a51aSDavid Howells */ 948a5af7e1fSDavid Howells int rxrpc_send_ack_packet(struct rxrpc_call *, bool); 94926cb02aaSDavid Howells int rxrpc_send_abort_packet(struct rxrpc_call *); 950a1767077SDavid Howells int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *, bool); 951248f219cSDavid Howells void rxrpc_reject_packets(struct rxrpc_local *); 9520d81a51aSDavid Howells 9530d81a51aSDavid Howells /* 954abe89ef0SDavid Howells * peer_event.c 9550d81a51aSDavid Howells */ 956abe89ef0SDavid Howells void rxrpc_error_report(struct sock *); 957f66d7490SDavid Howells void rxrpc_peer_error_distributor(struct work_struct *); 958cf1a6474SDavid Howells void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, 959cf1a6474SDavid Howells rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); 9600d81a51aSDavid Howells 9610d81a51aSDavid Howells /* 9620d81a51aSDavid Howells * peer_object.c 9630d81a51aSDavid Howells */ 964be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, 965be6e6707SDavid Howells const struct sockaddr_rxrpc *); 966be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *, 967be6e6707SDavid Howells struct sockaddr_rxrpc *, gfp_t); 968be6e6707SDavid Howells struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); 969248f219cSDavid Howells struct rxrpc_peer *rxrpc_lookup_incoming_peer(struct rxrpc_local *, 970248f219cSDavid Howells struct rxrpc_peer *); 971be6e6707SDavid Howells 972df5d8bf7SDavid Howells static inline struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *peer) 973be6e6707SDavid Howells { 974be6e6707SDavid Howells atomic_inc(&peer->usage); 975df5d8bf7SDavid Howells return peer; 976be6e6707SDavid Howells } 977be6e6707SDavid Howells 978be6e6707SDavid Howells static inline 979be6e6707SDavid Howells struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *peer) 980be6e6707SDavid Howells { 981be6e6707SDavid Howells return atomic_inc_not_zero(&peer->usage) ? peer : NULL; 982be6e6707SDavid Howells } 983be6e6707SDavid Howells 984be6e6707SDavid Howells extern void __rxrpc_put_peer(struct rxrpc_peer *peer); 985be6e6707SDavid Howells static inline void rxrpc_put_peer(struct rxrpc_peer *peer) 986be6e6707SDavid Howells { 9875627cc8bSDavid Howells if (peer && atomic_dec_and_test(&peer->usage)) 988be6e6707SDavid Howells __rxrpc_put_peer(peer); 989be6e6707SDavid Howells } 9900d81a51aSDavid Howells 9910d81a51aSDavid Howells /* 9920d81a51aSDavid Howells * proc.c 9930d81a51aSDavid Howells */ 9940d81a51aSDavid Howells extern const struct file_operations rxrpc_call_seq_fops; 9950d81a51aSDavid Howells extern const struct file_operations rxrpc_connection_seq_fops; 9960d81a51aSDavid Howells 9970d81a51aSDavid Howells /* 9980d81a51aSDavid Howells * recvmsg.c 9990d81a51aSDavid Howells */ 1000248f219cSDavid Howells void rxrpc_notify_socket(struct rxrpc_call *); 10010d81a51aSDavid Howells int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); 10020d81a51aSDavid Howells 10030d81a51aSDavid Howells /* 1004648af7fcSDavid Howells * rxkad.c 1005648af7fcSDavid Howells */ 1006648af7fcSDavid Howells #ifdef CONFIG_RXKAD 1007648af7fcSDavid Howells extern const struct rxrpc_security rxkad; 1008648af7fcSDavid Howells #endif 1009648af7fcSDavid Howells 1010648af7fcSDavid Howells /* 10110d81a51aSDavid Howells * security.c 10120d81a51aSDavid Howells */ 10130d81a51aSDavid Howells int __init rxrpc_init_security(void); 10140d81a51aSDavid Howells void rxrpc_exit_security(void); 10150d81a51aSDavid Howells int rxrpc_init_client_conn_security(struct rxrpc_connection *); 10160d81a51aSDavid Howells int rxrpc_init_server_conn_security(struct rxrpc_connection *); 10170d81a51aSDavid Howells 10180d81a51aSDavid Howells /* 10190b58b8a1SDavid Howells * sendmsg.c 10200b58b8a1SDavid Howells */ 10210b58b8a1SDavid Howells int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); 10220b58b8a1SDavid Howells 10230b58b8a1SDavid Howells /* 10240d81a51aSDavid Howells * skbuff.c 10250d81a51aSDavid Howells */ 1026d001648eSDavid Howells void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); 10270d81a51aSDavid Howells void rxrpc_packet_destructor(struct sk_buff *); 102871f3ca40SDavid Howells void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); 102971f3ca40SDavid Howells void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); 103071f3ca40SDavid Howells void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); 103171f3ca40SDavid Howells void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); 103271f3ca40SDavid Howells void rxrpc_lose_skb(struct sk_buff *, enum rxrpc_skb_trace); 1033df844fd4SDavid Howells void rxrpc_purge_queue(struct sk_buff_head *); 10340d81a51aSDavid Howells 10350d81a51aSDavid Howells /* 10365873c083SDavid Howells * sysctl.c 10375873c083SDavid Howells */ 10385873c083SDavid Howells #ifdef CONFIG_SYSCTL 10395873c083SDavid Howells extern int __init rxrpc_sysctl_init(void); 10405873c083SDavid Howells extern void rxrpc_sysctl_exit(void); 10415873c083SDavid Howells #else 10425873c083SDavid Howells static inline int __init rxrpc_sysctl_init(void) { return 0; } 10435873c083SDavid Howells static inline void rxrpc_sysctl_exit(void) {} 10445873c083SDavid Howells #endif 10455873c083SDavid Howells 10465873c083SDavid Howells /* 1047be6e6707SDavid Howells * utils.c 1048be6e6707SDavid Howells */ 1049d991b4a3SDavid Howells int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 1050be6e6707SDavid Howells 1051248f219cSDavid Howells static inline bool before(u32 seq1, u32 seq2) 1052248f219cSDavid Howells { 1053248f219cSDavid Howells return (s32)(seq1 - seq2) < 0; 1054248f219cSDavid Howells } 1055248f219cSDavid Howells static inline bool before_eq(u32 seq1, u32 seq2) 1056248f219cSDavid Howells { 1057248f219cSDavid Howells return (s32)(seq1 - seq2) <= 0; 1058248f219cSDavid Howells } 1059248f219cSDavid Howells static inline bool after(u32 seq1, u32 seq2) 1060248f219cSDavid Howells { 1061248f219cSDavid Howells return (s32)(seq1 - seq2) > 0; 1062248f219cSDavid Howells } 1063248f219cSDavid Howells static inline bool after_eq(u32 seq1, u32 seq2) 1064248f219cSDavid Howells { 1065248f219cSDavid Howells return (s32)(seq1 - seq2) >= 0; 1066248f219cSDavid Howells } 1067248f219cSDavid Howells 1068be6e6707SDavid Howells /* 106917926a79SDavid Howells * debug tracing 107017926a79SDavid Howells */ 107195c96174SEric Dumazet extern unsigned int rxrpc_debug; 107217926a79SDavid Howells 107317926a79SDavid Howells #define dbgprintk(FMT,...) \ 10749f389f4bSSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 107517926a79SDavid Howells 10760dc47877SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 10770dc47877SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 107817926a79SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 107917926a79SDavid Howells #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) 108017926a79SDavid Howells #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) 108117926a79SDavid Howells 108217926a79SDavid Howells 108317926a79SDavid Howells #if defined(__KDEBUG) 108417926a79SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 108517926a79SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 108617926a79SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 108717926a79SDavid Howells #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) 108817926a79SDavid Howells #define _net(FMT,...) knet(FMT,##__VA_ARGS__) 108917926a79SDavid Howells 109017926a79SDavid Howells #elif defined(CONFIG_AF_RXRPC_DEBUG) 109117926a79SDavid Howells #define RXRPC_DEBUG_KENTER 0x01 109217926a79SDavid Howells #define RXRPC_DEBUG_KLEAVE 0x02 109317926a79SDavid Howells #define RXRPC_DEBUG_KDEBUG 0x04 109417926a79SDavid Howells #define RXRPC_DEBUG_KPROTO 0x08 109517926a79SDavid Howells #define RXRPC_DEBUG_KNET 0x10 109617926a79SDavid Howells 109717926a79SDavid Howells #define _enter(FMT,...) \ 109817926a79SDavid Howells do { \ 109917926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ 110017926a79SDavid Howells kenter(FMT,##__VA_ARGS__); \ 110117926a79SDavid Howells } while (0) 110217926a79SDavid Howells 110317926a79SDavid Howells #define _leave(FMT,...) \ 110417926a79SDavid Howells do { \ 110517926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ 110617926a79SDavid Howells kleave(FMT,##__VA_ARGS__); \ 110717926a79SDavid Howells } while (0) 110817926a79SDavid Howells 110917926a79SDavid Howells #define _debug(FMT,...) \ 111017926a79SDavid Howells do { \ 111117926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ 111217926a79SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 111317926a79SDavid Howells } while (0) 111417926a79SDavid Howells 111517926a79SDavid Howells #define _proto(FMT,...) \ 111617926a79SDavid Howells do { \ 111717926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ 111817926a79SDavid Howells kproto(FMT,##__VA_ARGS__); \ 111917926a79SDavid Howells } while (0) 112017926a79SDavid Howells 112117926a79SDavid Howells #define _net(FMT,...) \ 112217926a79SDavid Howells do { \ 112317926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ 112417926a79SDavid Howells knet(FMT,##__VA_ARGS__); \ 112517926a79SDavid Howells } while (0) 112617926a79SDavid Howells 112717926a79SDavid Howells #else 112812fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 112912fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 113012fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 113112fdff3fSDavid Howells #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) 113212fdff3fSDavid Howells #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) 113317926a79SDavid Howells #endif 113417926a79SDavid Howells 113517926a79SDavid Howells /* 113617926a79SDavid Howells * debug assertion checking 113717926a79SDavid Howells */ 113817926a79SDavid Howells #if 1 // defined(__KDEBUGALL) 113917926a79SDavid Howells 114017926a79SDavid Howells #define ASSERT(X) \ 114117926a79SDavid Howells do { \ 114217926a79SDavid Howells if (unlikely(!(X))) { \ 11439b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 114417926a79SDavid Howells BUG(); \ 114517926a79SDavid Howells } \ 114617926a79SDavid Howells } while (0) 114717926a79SDavid Howells 114817926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 114917926a79SDavid Howells do { \ 1150cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1151cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 11529b6d5398SJoe Perches if (unlikely(!(_x OP _y))) { \ 11539b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1154cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1155cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 115617926a79SDavid Howells BUG(); \ 115717926a79SDavid Howells } \ 115817926a79SDavid Howells } while (0) 115917926a79SDavid Howells 116017926a79SDavid Howells #define ASSERTIF(C, X) \ 116117926a79SDavid Howells do { \ 116217926a79SDavid Howells if (unlikely((C) && !(X))) { \ 11639b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 116417926a79SDavid Howells BUG(); \ 116517926a79SDavid Howells } \ 116617926a79SDavid Howells } while (0) 116717926a79SDavid Howells 116817926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 116917926a79SDavid Howells do { \ 1170cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1171cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 11729b6d5398SJoe Perches if (unlikely((C) && !(_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 #else 118117926a79SDavid Howells 118217926a79SDavid Howells #define ASSERT(X) \ 118317926a79SDavid Howells do { \ 118417926a79SDavid Howells } while (0) 118517926a79SDavid Howells 118617926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 118717926a79SDavid Howells do { \ 118817926a79SDavid Howells } while (0) 118917926a79SDavid Howells 119017926a79SDavid Howells #define ASSERTIF(C, X) \ 119117926a79SDavid Howells do { \ 119217926a79SDavid Howells } while (0) 119317926a79SDavid Howells 119417926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 119517926a79SDavid Howells do { \ 119617926a79SDavid Howells } while (0) 119717926a79SDavid Howells 119817926a79SDavid Howells #endif /* __KDEBUGALL */ 1199