12874c5fdSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 217926a79SDavid Howells /* AF_RXRPC internal definitions 317926a79SDavid Howells * 417926a79SDavid Howells * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. 517926a79SDavid Howells * Written by David Howells (dhowells@redhat.com) 617926a79SDavid Howells */ 717926a79SDavid Howells 8be6e6707SDavid Howells #include <linux/atomic.h> 98496af50SDavid Howells #include <linux/seqlock.h> 10c410bf01SDavid Howells #include <linux/win_minmax.h> 112baec2c3SDavid Howells #include <net/net_namespace.h> 122baec2c3SDavid Howells #include <net/netns/generic.h> 13e0e4d82fSDavid Howells #include <net/sock.h> 14be6e6707SDavid Howells #include <net/af_rxrpc.h> 1541057ebdSDavid Howells #include <keys/rxrpc-type.h> 16ddc6c70fSDavid Howells #include "protocol.h" 1717926a79SDavid Howells 1817926a79SDavid Howells #define FCRYPT_BSIZE 8 1917926a79SDavid Howells struct rxrpc_crypt { 2017926a79SDavid Howells union { 2117926a79SDavid Howells u8 x[FCRYPT_BSIZE]; 2291e916cfSAl Viro __be32 n[2]; 2317926a79SDavid Howells }; 2417926a79SDavid Howells } __attribute__((aligned(8))); 2517926a79SDavid Howells 26651350d1SDavid Howells #define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS)) 27651350d1SDavid Howells #define rxrpc_queue_delayed_work(WS,D) \ 28651350d1SDavid Howells queue_delayed_work(rxrpc_workqueue, (WS), (D)) 29651350d1SDavid Howells 3012da59fcSDavid Howells struct key_preparsed_payload; 31cc8feb8eSDavid Howells struct rxrpc_connection; 3202a19356SDavid Howells struct rxrpc_txbuf; 33cc8feb8eSDavid Howells 3417926a79SDavid Howells /* 35ece64fecSDavid Howells * Mark applied to socket buffers in skb->mark. skb->priority is used 36ece64fecSDavid Howells * to pass supplementary information. 37d001648eSDavid Howells */ 38d001648eSDavid Howells enum rxrpc_skb_mark { 39446b3e14SDavid Howells RXRPC_SKB_MARK_PACKET, /* Received packet */ 40ff734825SDavid Howells RXRPC_SKB_MARK_ERROR, /* Error notification */ 41ece64fecSDavid Howells RXRPC_SKB_MARK_REJECT_BUSY, /* Reject with BUSY */ 42ece64fecSDavid Howells RXRPC_SKB_MARK_REJECT_ABORT, /* Reject with ABORT (code in skb->priority) */ 43d001648eSDavid Howells }; 44d001648eSDavid Howells 45d001648eSDavid Howells /* 4617926a79SDavid Howells * sk_state for RxRPC sockets 4717926a79SDavid Howells */ 4817926a79SDavid Howells enum { 492341e077SDavid Howells RXRPC_UNBOUND = 0, 502341e077SDavid Howells RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */ 5117926a79SDavid Howells RXRPC_CLIENT_BOUND, /* client local address bound */ 5217926a79SDavid Howells RXRPC_SERVER_BOUND, /* server local address bound */ 5328036f44SDavid Howells RXRPC_SERVER_BOUND2, /* second server local address bound */ 5417926a79SDavid Howells RXRPC_SERVER_LISTENING, /* server listening for connections */ 55210f0353SDavid Howells RXRPC_SERVER_LISTEN_DISABLED, /* server listening disabled */ 5617926a79SDavid Howells RXRPC_CLOSE, /* socket is being closed */ 5717926a79SDavid Howells }; 5817926a79SDavid Howells 5917926a79SDavid Howells /* 602baec2c3SDavid Howells * Per-network namespace data. 612baec2c3SDavid Howells */ 622baec2c3SDavid Howells struct rxrpc_net { 632baec2c3SDavid Howells struct proc_dir_entry *proc_net; /* Subdir in /proc/net */ 642baec2c3SDavid Howells u32 epoch; /* Local epoch for detecting local-end reset */ 652baec2c3SDavid Howells struct list_head calls; /* List of calls active in this namespace */ 66ad25f5cbSDavid Howells spinlock_t call_lock; /* Lock for ->calls */ 67d3be4d24SDavid Howells atomic_t nr_calls; /* Count of allocated calls */ 682baec2c3SDavid Howells 6931f5f9a1SDavid Howells atomic_t nr_conns; 702baec2c3SDavid Howells struct list_head conn_proc_list; /* List of conns in this namespace for proc */ 712baec2c3SDavid Howells struct list_head service_conns; /* Service conns in this namespace */ 722baec2c3SDavid Howells rwlock_t conn_lock; /* Lock for ->conn_proc_list, ->service_conns */ 733d18cbb7SDavid Howells struct work_struct service_conn_reaper; 743d18cbb7SDavid Howells struct timer_list service_conn_reap_timer; 752baec2c3SDavid Howells 76f859ab61SDavid Howells bool live; 77245500d8SDavid Howells 78245500d8SDavid Howells bool kill_all_client_conns; 79245500d8SDavid Howells atomic_t nr_client_conns; 802baec2c3SDavid Howells spinlock_t client_conn_cache_lock; /* Lock for ->*_client_conns */ 813cec055cSDavid Howells struct mutex client_conn_discard_lock; /* Prevent multiple discarders */ 822baec2c3SDavid Howells struct list_head idle_client_conns; 833d18cbb7SDavid Howells struct work_struct client_conn_reaper; 843d18cbb7SDavid Howells struct timer_list client_conn_reap_timer; 852baec2c3SDavid Howells 8633912c26SDavid Howells struct hlist_head local_endpoints; 872baec2c3SDavid Howells struct mutex local_mutex; /* Lock for ->local_endpoints */ 882baec2c3SDavid Howells 892baec2c3SDavid Howells DECLARE_HASHTABLE (peer_hash, 10); 90ace45becSDavid Howells spinlock_t peer_hash_lock; /* Lock for ->peer_hash */ 91ace45becSDavid Howells 92ace45becSDavid Howells #define RXRPC_KEEPALIVE_TIME 20 /* NAT keepalive time in seconds */ 93ace45becSDavid Howells u8 peer_keepalive_cursor; 94330bdcfaSDavid Howells time64_t peer_keepalive_base; 95330bdcfaSDavid Howells struct list_head peer_keepalive[32]; 96330bdcfaSDavid Howells struct list_head peer_keepalive_new; 97ace45becSDavid Howells struct timer_list peer_keepalive_timer; 98ace45becSDavid Howells struct work_struct peer_keepalive_work; 99b0154246SDavid Howells 100b0154246SDavid Howells atomic_t stat_tx_data; 101b0154246SDavid Howells atomic_t stat_tx_data_retrans; 102b0154246SDavid Howells atomic_t stat_tx_data_send; 103b0154246SDavid Howells atomic_t stat_tx_data_send_frag; 10432cf8edbSDavid Howells atomic_t stat_tx_data_send_fail; 10532cf8edbSDavid Howells atomic_t stat_tx_data_underflow; 10632cf8edbSDavid Howells atomic_t stat_tx_data_cwnd_reset; 107b0154246SDavid Howells atomic_t stat_rx_data; 108b0154246SDavid Howells atomic_t stat_rx_data_reqack; 109b0154246SDavid Howells atomic_t stat_rx_data_jumbo; 110f2a676d1SDavid Howells 111f2a676d1SDavid Howells atomic_t stat_tx_ack_fill; 112f2a676d1SDavid Howells atomic_t stat_tx_ack_send; 113f2a676d1SDavid Howells atomic_t stat_tx_ack_skip; 114f2a676d1SDavid Howells atomic_t stat_tx_acks[256]; 115f2a676d1SDavid Howells atomic_t stat_rx_acks[256]; 116f7fa5242SDavid Howells 117f7fa5242SDavid Howells atomic_t stat_why_req_ack[8]; 118a275da62SDavid Howells 119a275da62SDavid Howells atomic_t stat_io_loop; 1202baec2c3SDavid Howells }; 1212baec2c3SDavid Howells 1222baec2c3SDavid Howells /* 12300e90712SDavid Howells * Service backlog preallocation. 12400e90712SDavid Howells * 12500e90712SDavid Howells * This contains circular buffers of preallocated peers, connections and calls 12600e90712SDavid Howells * for incoming service calls and their head and tail pointers. This allows 12700e90712SDavid Howells * calls to be set up in the data_ready handler, thereby avoiding the need to 12800e90712SDavid Howells * shuffle packets around so much. 12900e90712SDavid Howells */ 13000e90712SDavid Howells struct rxrpc_backlog { 13100e90712SDavid Howells unsigned short peer_backlog_head; 13200e90712SDavid Howells unsigned short peer_backlog_tail; 13300e90712SDavid Howells unsigned short conn_backlog_head; 13400e90712SDavid Howells unsigned short conn_backlog_tail; 13500e90712SDavid Howells unsigned short call_backlog_head; 13600e90712SDavid Howells unsigned short call_backlog_tail; 13700e90712SDavid Howells #define RXRPC_BACKLOG_MAX 32 13800e90712SDavid Howells struct rxrpc_peer *peer_backlog[RXRPC_BACKLOG_MAX]; 13900e90712SDavid Howells struct rxrpc_connection *conn_backlog[RXRPC_BACKLOG_MAX]; 14000e90712SDavid Howells struct rxrpc_call *call_backlog[RXRPC_BACKLOG_MAX]; 14100e90712SDavid Howells }; 14200e90712SDavid Howells 14300e90712SDavid Howells /* 14417926a79SDavid Howells * RxRPC socket definition 14517926a79SDavid Howells */ 14617926a79SDavid Howells struct rxrpc_sock { 14717926a79SDavid Howells /* WARNING: sk has to be the first member */ 14817926a79SDavid Howells struct sock sk; 149d001648eSDavid Howells rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */ 15000e90712SDavid Howells rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */ 15117926a79SDavid Howells struct rxrpc_local *local; /* local endpoint */ 15200e90712SDavid Howells struct rxrpc_backlog *backlog; /* Preallocation for services */ 153248f219cSDavid Howells spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */ 154248f219cSDavid Howells struct list_head sock_calls; /* List of calls owned by this socket */ 155248f219cSDavid Howells struct list_head to_be_accepted; /* calls awaiting acceptance */ 156248f219cSDavid Howells struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */ 157248f219cSDavid Howells rwlock_t recvmsg_lock; /* Lock for recvmsg_q */ 15817926a79SDavid Howells struct key *key; /* security for this socket */ 15917926a79SDavid Howells struct key *securities; /* list of server security descriptors */ 16000e90712SDavid Howells struct rb_root calls; /* User ID -> call mapping */ 16117926a79SDavid Howells unsigned long flags; 1622341e077SDavid Howells #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ 16317926a79SDavid Howells rwlock_t call_lock; /* lock for calls */ 16417926a79SDavid Howells u32 min_sec_level; /* minimum security level */ 16517926a79SDavid Howells #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT 166cc8feb8eSDavid Howells bool exclusive; /* Exclusive connection for a client socket */ 16728036f44SDavid Howells u16 second_service; /* Additional service bound to the endpoint */ 1684722974dSDavid Howells struct { 1694722974dSDavid Howells /* Service upgrade information */ 1704722974dSDavid Howells u16 from; /* Service ID to upgrade (if not 0) */ 1714722974dSDavid Howells u16 to; /* service ID to upgrade to */ 1724722974dSDavid Howells } service_upgrade; 173cc8feb8eSDavid Howells sa_family_t family; /* Protocol family created with */ 1744722974dSDavid Howells struct sockaddr_rxrpc srx; /* Primary Service/local addresses */ 1752341e077SDavid Howells struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ 17617926a79SDavid Howells }; 17717926a79SDavid Howells 17817926a79SDavid Howells #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) 17917926a79SDavid Howells 18017926a79SDavid Howells /* 1810d12f8a4SDavid Howells * CPU-byteorder normalised Rx packet header. 1820d12f8a4SDavid Howells */ 1830d12f8a4SDavid Howells struct rxrpc_host_header { 1840d12f8a4SDavid Howells u32 epoch; /* client boot timestamp */ 1850d12f8a4SDavid Howells u32 cid; /* connection and channel ID */ 1860d12f8a4SDavid Howells u32 callNumber; /* call ID (0 for connection-level packets) */ 1870d12f8a4SDavid Howells u32 seq; /* sequence number of pkt in call stream */ 1880d12f8a4SDavid Howells u32 serial; /* serial number of pkt sent to network */ 1890d12f8a4SDavid Howells u8 type; /* packet type */ 1900d12f8a4SDavid Howells u8 flags; /* packet flags */ 1910d12f8a4SDavid Howells u8 userStatus; /* app-layer defined status */ 1920d12f8a4SDavid Howells u8 securityIndex; /* security protocol ID */ 1930d12f8a4SDavid Howells union { 1940d12f8a4SDavid Howells u16 _rsvd; /* reserved */ 1950d12f8a4SDavid Howells u16 cksum; /* kerberos security checksum */ 1960d12f8a4SDavid Howells }; 1970d12f8a4SDavid Howells u16 serviceId; /* service ID */ 1980d12f8a4SDavid Howells } __packed; 1990d12f8a4SDavid Howells 2000d12f8a4SDavid Howells /* 20117926a79SDavid Howells * RxRPC socket buffer private variables 20217926a79SDavid Howells * - max 48 bytes (struct sk_buff::cb) 20317926a79SDavid Howells */ 20417926a79SDavid Howells struct rxrpc_skb_priv { 205f2cce89aSDavid Howells struct rxrpc_connection *conn; /* Connection referred to (poke packet) */ 206d4d02d8bSDavid Howells u16 offset; /* Offset of data */ 207d4d02d8bSDavid Howells u16 len; /* Length of data */ 208d4d02d8bSDavid Howells u8 flags; 209d4d02d8bSDavid Howells #define RXRPC_RX_VERIFIED 0x01 21017926a79SDavid Howells 2110d12f8a4SDavid Howells struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ 21217926a79SDavid Howells }; 21317926a79SDavid Howells 21417926a79SDavid Howells #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) 21517926a79SDavid Howells 21617926a79SDavid Howells /* 21717926a79SDavid Howells * RxRPC security module interface 21817926a79SDavid Howells */ 21917926a79SDavid Howells struct rxrpc_security { 22017926a79SDavid Howells const char *name; /* name of this service */ 22117926a79SDavid Howells u8 security_index; /* security type provided */ 222063c60d3SDavid Howells u32 no_key_abort; /* Abort code indicating no key */ 22317926a79SDavid Howells 224648af7fcSDavid Howells /* Initialise a security service */ 225648af7fcSDavid Howells int (*init)(void); 226648af7fcSDavid Howells 227648af7fcSDavid Howells /* Clean up a security service */ 228648af7fcSDavid Howells void (*exit)(void); 229648af7fcSDavid Howells 23012da59fcSDavid Howells /* Parse the information from a server key */ 23112da59fcSDavid Howells int (*preparse_server_key)(struct key_preparsed_payload *); 23212da59fcSDavid Howells 23312da59fcSDavid Howells /* Clean up the preparse buffer after parsing a server key */ 23412da59fcSDavid Howells void (*free_preparse_server_key)(struct key_preparsed_payload *); 23512da59fcSDavid Howells 23612da59fcSDavid Howells /* Destroy the payload of a server key */ 23712da59fcSDavid Howells void (*destroy_server_key)(struct key *); 23812da59fcSDavid Howells 239d5953f65SDavid Howells /* Describe a server key */ 240d5953f65SDavid Howells void (*describe_server_key)(const struct key *, struct seq_file *); 241d5953f65SDavid Howells 24217926a79SDavid Howells /* initialise a connection's security */ 24341057ebdSDavid Howells int (*init_connection_security)(struct rxrpc_connection *, 24441057ebdSDavid Howells struct rxrpc_key_token *); 24517926a79SDavid Howells 246d7d775b1SDavid Howells /* Work out how much data we can store in a packet, given an estimate 247d7d775b1SDavid Howells * of the amount of data remaining. 248d7d775b1SDavid Howells */ 249d7d775b1SDavid Howells int (*how_much_data)(struct rxrpc_call *, size_t, 250d7d775b1SDavid Howells size_t *, size_t *, size_t *); 25117926a79SDavid Howells 25217926a79SDavid Howells /* impose security on a packet */ 253a4ea4c47SDavid Howells int (*secure_packet)(struct rxrpc_call *, struct rxrpc_txbuf *); 25417926a79SDavid Howells 25517926a79SDavid Howells /* verify the security on a received packet */ 256d4d02d8bSDavid Howells int (*verify_packet)(struct rxrpc_call *, struct sk_buff *); 257248f219cSDavid Howells 2581db88c53SDavid Howells /* Free crypto request on a call */ 2591db88c53SDavid Howells void (*free_call_crypto)(struct rxrpc_call *); 2601db88c53SDavid Howells 26117926a79SDavid Howells /* issue a challenge */ 26217926a79SDavid Howells int (*issue_challenge)(struct rxrpc_connection *); 26317926a79SDavid Howells 26417926a79SDavid Howells /* respond to a challenge */ 26517926a79SDavid Howells int (*respond_to_challenge)(struct rxrpc_connection *, 266*a00ce28bSDavid Howells struct sk_buff *); 26717926a79SDavid Howells 26817926a79SDavid Howells /* verify a response */ 26917926a79SDavid Howells int (*verify_response)(struct rxrpc_connection *, 270*a00ce28bSDavid Howells struct sk_buff *); 27117926a79SDavid Howells 27217926a79SDavid Howells /* clear connection security */ 27317926a79SDavid Howells void (*clear)(struct rxrpc_connection *); 27417926a79SDavid Howells }; 27517926a79SDavid Howells 27617926a79SDavid Howells /* 2774f95dd78SDavid Howells * RxRPC local transport endpoint description 2784f95dd78SDavid Howells * - owned by a single AF_RXRPC socket 2794f95dd78SDavid Howells * - pointed to by transport socket struct sk_user_data 28017926a79SDavid Howells */ 28117926a79SDavid Howells struct rxrpc_local { 2824f95dd78SDavid Howells struct rcu_head rcu; 283730c5fd4SDavid Howells atomic_t active_users; /* Number of users of the local endpoint */ 284a0575429SDavid Howells refcount_t ref; /* Number of references to the structure */ 2858a758d98SDavid Howells struct net *net; /* The network namespace */ 2868a758d98SDavid Howells struct rxrpc_net *rxnet; /* Our bits in the network namespace */ 28733912c26SDavid Howells struct hlist_node link; 28817926a79SDavid Howells struct socket *socket; /* my UDP socket */ 289a275da62SDavid Howells struct task_struct *io_thread; 2908fbcc833SDavid Howells struct completion io_thread_ready; /* Indication that the I/O thread started */ 2911e9e5c95SDavid Howells struct rxrpc_sock __rcu *service; /* Service(s) listening on this endpoint */ 29217926a79SDavid Howells struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ 293a275da62SDavid Howells struct sk_buff_head rx_queue; /* Received packets */ 294f2cce89aSDavid Howells struct list_head conn_attend_q; /* Conns requiring immediate attention */ 29515f661dcSDavid Howells struct list_head call_attend_q; /* Calls requiring immediate attention */ 296245500d8SDavid Howells struct rb_root client_bundles; /* Client connection bundles by socket params */ 297245500d8SDavid Howells spinlock_t client_bundles_lock; /* Lock for client_bundles */ 29817926a79SDavid Howells spinlock_t lock; /* access lock */ 29917926a79SDavid Howells rwlock_t services_lock; /* lock for services list */ 30017926a79SDavid Howells int debug_id; /* debug ID for printks */ 3014f95dd78SDavid Howells bool dead; 302f859ab61SDavid Howells bool service_closed; /* Service socket closed */ 30317926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 30417926a79SDavid Howells }; 30517926a79SDavid Howells 30617926a79SDavid Howells /* 30717926a79SDavid Howells * RxRPC remote transport endpoint definition 308be6e6707SDavid Howells * - matched by local endpoint, remote port, address and protocol type 30917926a79SDavid Howells */ 31017926a79SDavid Howells struct rxrpc_peer { 311be6e6707SDavid Howells struct rcu_head rcu; /* This must be first */ 312a0575429SDavid Howells refcount_t ref; 313be6e6707SDavid Howells unsigned long hash_key; 314be6e6707SDavid Howells struct hlist_node hash_link; 315be6e6707SDavid Howells struct rxrpc_local *local; 316f66d7490SDavid Howells struct hlist_head error_targets; /* targets for net error distribution */ 317aa390bbeSDavid Howells struct rb_root service_conns; /* Service connections */ 318330bdcfaSDavid Howells struct list_head keepalive_link; /* Link in net->peer_keepalive[] */ 319ace45becSDavid Howells time64_t last_tx_at; /* Last time packet sent here */ 3208496af50SDavid Howells seqlock_t service_conn_lock; 32117926a79SDavid Howells spinlock_t lock; /* access lock */ 32295c96174SEric Dumazet unsigned int if_mtu; /* interface MTU for this peer */ 32395c96174SEric Dumazet unsigned int mtu; /* network MTU for this peer */ 32495c96174SEric Dumazet unsigned int maxdata; /* data size (MTU - hdrsize) */ 32517926a79SDavid Howells unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ 32617926a79SDavid Howells int debug_id; /* debug ID for printks */ 32717926a79SDavid Howells struct sockaddr_rxrpc srx; /* remote address */ 32817926a79SDavid Howells 32917926a79SDavid Howells /* calculated RTT cache */ 33017926a79SDavid Howells #define RXRPC_RTT_CACHE_SIZE 32 331c1e15b49SDavid Howells spinlock_t rtt_input_lock; /* RTT lock for input routine */ 3320d4b103cSDavid Howells ktime_t rtt_last_req; /* Time of last RTT request */ 333c410bf01SDavid Howells unsigned int rtt_count; /* Number of samples we've got */ 334c410bf01SDavid Howells 335c410bf01SDavid Howells u32 srtt_us; /* smoothed round trip time << 3 in usecs */ 336c410bf01SDavid Howells u32 mdev_us; /* medium deviation */ 337c410bf01SDavid Howells u32 mdev_max_us; /* maximal mdev for the last rtt period */ 338c410bf01SDavid Howells u32 rttvar_us; /* smoothed mdev_max */ 339c410bf01SDavid Howells u32 rto_j; /* Retransmission timeout in jiffies */ 340c410bf01SDavid Howells u8 backoff; /* Backoff timeout */ 341f7aec129SDavid Howells 3421fc4fa2aSDavid Howells u8 cong_ssthresh; /* Congestion slow-start threshold */ 34317926a79SDavid Howells }; 34417926a79SDavid Howells 34517926a79SDavid Howells /* 34619ffa01cSDavid Howells * Keys for matching a connection. 34719ffa01cSDavid Howells */ 34819ffa01cSDavid Howells struct rxrpc_conn_proto { 349e8d70ce1SDavid Howells union { 350e8d70ce1SDavid Howells struct { 35119ffa01cSDavid Howells u32 epoch; /* epoch of this connection */ 35219ffa01cSDavid Howells u32 cid; /* connection ID */ 353e8d70ce1SDavid Howells }; 354e8d70ce1SDavid Howells u64 index_key; 35519ffa01cSDavid Howells }; 35619ffa01cSDavid Howells }; 35719ffa01cSDavid Howells 35819ffa01cSDavid Howells struct rxrpc_conn_parameters { 35919ffa01cSDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 36019ffa01cSDavid Howells struct rxrpc_peer *peer; /* Remote endpoint */ 36119ffa01cSDavid Howells struct key *key; /* Security details */ 36219ffa01cSDavid Howells bool exclusive; /* T if conn is exclusive */ 3634e255721SDavid Howells bool upgrade; /* T if service ID can be upgraded */ 36419ffa01cSDavid Howells u16 service_id; /* Service ID for this connection */ 36519ffa01cSDavid Howells u32 security_level; /* Security level selected */ 36619ffa01cSDavid Howells }; 36719ffa01cSDavid Howells 36819ffa01cSDavid Howells /* 369*a00ce28bSDavid Howells * Call completion condition (state == RXRPC_CALL_COMPLETE). 370*a00ce28bSDavid Howells */ 371*a00ce28bSDavid Howells enum rxrpc_call_completion { 372*a00ce28bSDavid Howells RXRPC_CALL_SUCCEEDED, /* - Normal termination */ 373*a00ce28bSDavid Howells RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ 374*a00ce28bSDavid Howells RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ 375*a00ce28bSDavid Howells RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */ 376*a00ce28bSDavid Howells RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ 377*a00ce28bSDavid Howells NR__RXRPC_CALL_COMPLETIONS 378*a00ce28bSDavid Howells }; 379*a00ce28bSDavid Howells 380*a00ce28bSDavid Howells /* 381bba304dbSDavid Howells * Bits in the connection flags. 382bba304dbSDavid Howells */ 383bba304dbSDavid Howells enum rxrpc_conn_flag { 384bba304dbSDavid Howells RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ 385001c1122SDavid Howells RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ 38645025bceSDavid Howells RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ 3874e255721SDavid Howells RXRPC_CONN_PROBING_FOR_UPGRADE, /* Probing for service upgrade */ 3883136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_0, /* Need final ACK for channel 0 */ 3893136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_1, /* Need final ACK for channel 1 */ 3903136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_2, /* Need final ACK for channel 2 */ 3913136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_3, /* Need final ACK for channel 3 */ 392bba304dbSDavid Howells }; 393bba304dbSDavid Howells 3943136ef49SDavid Howells #define RXRPC_CONN_FINAL_ACK_MASK ((1UL << RXRPC_CONN_FINAL_ACK_0) | \ 3953136ef49SDavid Howells (1UL << RXRPC_CONN_FINAL_ACK_1) | \ 3963136ef49SDavid Howells (1UL << RXRPC_CONN_FINAL_ACK_2) | \ 3973136ef49SDavid Howells (1UL << RXRPC_CONN_FINAL_ACK_3)) 3983136ef49SDavid Howells 399bba304dbSDavid Howells /* 400bba304dbSDavid Howells * Events that can be raised upon a connection. 401bba304dbSDavid Howells */ 402bba304dbSDavid Howells enum rxrpc_conn_event { 403bba304dbSDavid Howells RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ 404*a00ce28bSDavid Howells RXRPC_CONN_EV_ABORT_CALLS, /* Abort attached calls */ 405bba304dbSDavid Howells }; 406bba304dbSDavid Howells 407bba304dbSDavid Howells /* 408bba304dbSDavid Howells * The connection protocol state. 409bba304dbSDavid Howells */ 410bba304dbSDavid Howells enum rxrpc_conn_proto_state { 411bba304dbSDavid Howells RXRPC_CONN_UNUSED, /* Connection not yet attempted */ 412bba304dbSDavid Howells RXRPC_CONN_CLIENT, /* Client connection */ 41300e90712SDavid Howells RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ 414bba304dbSDavid Howells RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ 415bba304dbSDavid Howells RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ 416bba304dbSDavid Howells RXRPC_CONN_SERVICE, /* Service secured connection */ 417*a00ce28bSDavid Howells RXRPC_CONN_ABORTED, /* Conn aborted */ 418bba304dbSDavid Howells RXRPC_CONN__NR_STATES 419bba304dbSDavid Howells }; 420bba304dbSDavid Howells 421bba304dbSDavid Howells /* 422245500d8SDavid Howells * RxRPC client connection bundle. 423245500d8SDavid Howells */ 424245500d8SDavid Howells struct rxrpc_bundle { 4252cc80086SDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 4262cc80086SDavid Howells struct rxrpc_peer *peer; /* Remote endpoint */ 4272cc80086SDavid Howells struct key *key; /* Security details */ 428a0575429SDavid Howells refcount_t ref; 4293bcd6c7eSDavid Howells atomic_t active; /* Number of active users */ 430245500d8SDavid Howells unsigned int debug_id; 4312cc80086SDavid Howells u32 security_level; /* Security level selected */ 4322cc80086SDavid Howells u16 service_id; /* Service ID for this connection */ 433245500d8SDavid Howells bool try_upgrade; /* True if the bundle is attempting upgrade */ 434245500d8SDavid Howells bool alloc_conn; /* True if someone's getting a conn */ 4352cc80086SDavid Howells bool exclusive; /* T if conn is exclusive */ 4362cc80086SDavid Howells bool upgrade; /* T if service ID can be upgraded */ 4378806245aSDavid Howells short alloc_error; /* Error from last conn allocation */ 438245500d8SDavid Howells spinlock_t channel_lock; 439245500d8SDavid Howells struct rb_node local_node; /* Node in local->client_conns */ 440245500d8SDavid Howells struct list_head waiting_calls; /* Calls waiting for channels */ 441245500d8SDavid Howells unsigned long avail_chans; /* Mask of available channels */ 442245500d8SDavid Howells struct rxrpc_connection *conns[4]; /* The connections in the bundle (max 4) */ 443245500d8SDavid Howells }; 444245500d8SDavid Howells 445245500d8SDavid Howells /* 44617926a79SDavid Howells * RxRPC connection definition 447aa390bbeSDavid Howells * - matched by { local, peer, epoch, conn_id, direction } 44817926a79SDavid Howells * - each connection can only handle four simultaneous calls 44917926a79SDavid Howells */ 45017926a79SDavid Howells struct rxrpc_connection { 45119ffa01cSDavid Howells struct rxrpc_conn_proto proto; 4522cc80086SDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 4532cc80086SDavid Howells struct rxrpc_peer *peer; /* Remote endpoint */ 4543cec055cSDavid Howells struct rxrpc_net *rxnet; /* Network namespace to which call belongs */ 4552cc80086SDavid Howells struct key *key; /* Security details */ 456f2cce89aSDavid Howells struct list_head attend_link; /* Link in local->conn_attend_q */ 45719ffa01cSDavid Howells 458a0575429SDavid Howells refcount_t ref; 4593cec055cSDavid Howells atomic_t active; /* Active count for service conns */ 46045025bceSDavid Howells struct rcu_head rcu; 46145025bceSDavid Howells struct list_head cache_link; 462a1399f8bSDavid Howells 463245500d8SDavid Howells unsigned char act_chans; /* Mask of active channels */ 464a1399f8bSDavid Howells struct rxrpc_channel { 4653136ef49SDavid Howells unsigned long final_ack_at; /* Time at which to issue final ACK */ 466a1399f8bSDavid Howells struct rxrpc_call __rcu *call; /* Active call */ 4674764c0daSDavid Howells unsigned int call_debug_id; /* call->debug_id */ 468a1399f8bSDavid Howells u32 call_id; /* ID of current call */ 469a1399f8bSDavid Howells u32 call_counter; /* Call ID counter */ 470a1399f8bSDavid Howells u32 last_call; /* ID of last call */ 47118bfeba5SDavid Howells u8 last_type; /* Type of last packet */ 47218bfeba5SDavid Howells union { 47318bfeba5SDavid Howells u32 last_seq; 47418bfeba5SDavid Howells u32 last_abort; 47518bfeba5SDavid Howells }; 476a1399f8bSDavid Howells } channels[RXRPC_MAXCALLS]; 477999b69f8SDavid Howells 4783136ef49SDavid Howells struct timer_list timer; /* Conn event timer */ 47917926a79SDavid Howells struct work_struct processor; /* connection event processor */ 4803cec055cSDavid Howells struct work_struct destructor; /* In-process-context destroyer */ 481245500d8SDavid Howells struct rxrpc_bundle *bundle; /* Client connection bundle */ 482aa390bbeSDavid Howells struct rb_node service_node; /* Node in peer->service_conns */ 4834d028b2cSDavid Howells struct list_head proc_link; /* link in procfs list */ 48417926a79SDavid Howells struct list_head link; /* link in master connection list */ 48517926a79SDavid Howells struct sk_buff_head rx_queue; /* received conn-level packets */ 486521bb304SDavid Howells 487648af7fcSDavid Howells const struct rxrpc_security *security; /* applied security module */ 488521bb304SDavid Howells union { 489521bb304SDavid Howells struct { 49069d826faSKees Cook struct crypto_sync_skcipher *cipher; /* encryption handle */ 49117926a79SDavid Howells struct rxrpc_crypt csum_iv; /* packet checksum base */ 492521bb304SDavid Howells u32 nonce; /* response re-use preventer */ 493521bb304SDavid Howells } rxkad; 494521bb304SDavid Howells }; 4954a3388c8SDavid Howells unsigned long flags; 49617926a79SDavid Howells unsigned long events; 497f51b4480SDavid Howells unsigned long idle_timestamp; /* Time at which last became idle */ 49817926a79SDavid Howells spinlock_t state_lock; /* state-change lock */ 499cf13258fSDavid Howells enum rxrpc_conn_proto_state state; /* current state of connection */ 500*a00ce28bSDavid Howells enum rxrpc_call_completion completion; /* Completion condition */ 501*a00ce28bSDavid Howells s32 abort_code; /* Abort code of connection abort */ 50217926a79SDavid Howells int debug_id; /* debug ID for printks */ 50317926a79SDavid Howells atomic_t serial; /* packet serial number counter */ 504563ea7d5SDavid Howells unsigned int hi_serial; /* highest serial number received */ 505c1e15b49SDavid Howells u32 service_id; /* Service ID, possibly upgraded */ 5062cc80086SDavid Howells u32 security_level; /* Security level selected */ 50717926a79SDavid Howells u8 security_ix; /* security type */ 50817926a79SDavid Howells u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ 509245500d8SDavid Howells u8 bundle_shift; /* Index into bundle->avail_chans */ 5102cc80086SDavid Howells bool exclusive; /* T if conn is exclusive */ 5112cc80086SDavid Howells bool upgrade; /* T if service ID can be upgraded */ 5122cc80086SDavid Howells u16 orig_service_id; /* Originally requested service ID */ 51364753092SDavid Howells short error; /* Local error code */ 51417926a79SDavid Howells }; 51517926a79SDavid Howells 516dc71db34SDavid Howells static inline bool rxrpc_to_server(const struct rxrpc_skb_priv *sp) 517dc71db34SDavid Howells { 518dc71db34SDavid Howells return sp->hdr.flags & RXRPC_CLIENT_INITIATED; 519dc71db34SDavid Howells } 520dc71db34SDavid Howells 521dc71db34SDavid Howells static inline bool rxrpc_to_client(const struct rxrpc_skb_priv *sp) 522dc71db34SDavid Howells { 523dc71db34SDavid Howells return !rxrpc_to_server(sp); 524dc71db34SDavid Howells } 525dc71db34SDavid Howells 52617926a79SDavid Howells /* 5275b8848d1SDavid Howells * Flags in call->flags. 5285b8848d1SDavid Howells */ 5295b8848d1SDavid Howells enum rxrpc_call_flag { 5305b8848d1SDavid Howells RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ 5315b8848d1SDavid Howells RXRPC_CALL_HAS_USERID, /* has a user ID attached */ 532dabe5a79SDavid Howells RXRPC_CALL_IS_SERVICE, /* Call is service call */ 53345025bceSDavid Howells RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ 534248f219cSDavid Howells RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ 535248f219cSDavid Howells RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ 536a4ea4c47SDavid Howells RXRPC_CALL_TX_ALL_ACKED, /* Last packet has been hard-acked */ 537a5af7e1fSDavid Howells RXRPC_CALL_SEND_PING, /* A ping will need to be sent */ 53857494343SDavid Howells RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */ 539c54e43d7SDavid Howells RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */ 5401a025028SDavid Howells RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */ 5415273a191SDavid Howells RXRPC_CALL_DISCONNECTED, /* The call has been disconnected */ 542b7a7d674SDavid Howells RXRPC_CALL_KERNEL, /* The call was made by the kernel */ 543245500d8SDavid Howells RXRPC_CALL_UPGRADE, /* Service upgrade was requested for the call */ 544f3441d41SDavid Howells RXRPC_CALL_EXCLUSIVE, /* The call uses a once-only connection */ 5455e6ef4f1SDavid Howells RXRPC_CALL_RX_IS_IDLE, /* Reception is idle - send an ACK */ 5465b8848d1SDavid Howells }; 5475b8848d1SDavid Howells 5485b8848d1SDavid Howells /* 5495b8848d1SDavid Howells * Events that can be raised on a call. 5505b8848d1SDavid Howells */ 5515b8848d1SDavid Howells enum rxrpc_call_event { 552bd1fdf8cSDavid Howells RXRPC_CALL_EV_ACK_LOST, /* ACK may be lost, send ping */ 5535e6ef4f1SDavid Howells RXRPC_CALL_EV_INITIAL_PING, /* Send initial ping for a new service call */ 5545b8848d1SDavid Howells }; 5555b8848d1SDavid Howells 5565b8848d1SDavid Howells /* 5575b8848d1SDavid Howells * The states that a call can be in. 5585b8848d1SDavid Howells */ 5595b8848d1SDavid Howells enum rxrpc_call_state { 560999b69f8SDavid Howells RXRPC_CALL_UNINITIALISED, 561999b69f8SDavid Howells RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ 5625b8848d1SDavid Howells RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ 5635b8848d1SDavid Howells RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ 5645b8848d1SDavid Howells RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ 56500e90712SDavid Howells RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ 5665b8848d1SDavid Howells RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ 5675b8848d1SDavid Howells RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ 5685b8848d1SDavid Howells RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ 5695b8848d1SDavid Howells RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ 5705b8848d1SDavid Howells RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ 571f5c17aaeSDavid Howells RXRPC_CALL_COMPLETE, /* - call complete */ 572f5c17aaeSDavid Howells NR__RXRPC_CALL_STATES 573f5c17aaeSDavid Howells }; 574f5c17aaeSDavid Howells 575f5c17aaeSDavid Howells /* 57657494343SDavid Howells * Call Tx congestion management modes. 57757494343SDavid Howells */ 57857494343SDavid Howells enum rxrpc_congest_mode { 57957494343SDavid Howells RXRPC_CALL_SLOW_START, 58057494343SDavid Howells RXRPC_CALL_CONGEST_AVOIDANCE, 58157494343SDavid Howells RXRPC_CALL_PACKET_LOSS, 58257494343SDavid Howells RXRPC_CALL_FAST_RETRANSMIT, 58357494343SDavid Howells NR__RXRPC_CONGEST_MODES 58457494343SDavid Howells }; 58557494343SDavid Howells 58657494343SDavid Howells /* 58717926a79SDavid Howells * RxRPC call definition 58817926a79SDavid Howells * - matched by { connection, call_id } 58917926a79SDavid Howells */ 59017926a79SDavid Howells struct rxrpc_call { 591dee46364SDavid Howells struct rcu_head rcu; 59217926a79SDavid Howells struct rxrpc_connection *conn; /* connection carrying call */ 593df5d8bf7SDavid Howells struct rxrpc_peer *peer; /* Peer record for remote address */ 594f3441d41SDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 5958d94aa38SDavid Howells struct rxrpc_sock __rcu *socket; /* socket responsible */ 596d3be4d24SDavid Howells struct rxrpc_net *rxnet; /* Network namespace to which call belongs */ 597f3441d41SDavid Howells struct key *key; /* Security details */ 59891fcfbe8SDavid Howells const struct rxrpc_security *security; /* applied security module */ 599540b1c48SDavid Howells struct mutex user_mutex; /* User access mutex */ 600f3441d41SDavid Howells struct sockaddr_rxrpc dest_srx; /* Destination address */ 601530403d9SDavid Howells unsigned long delay_ack_at; /* When DELAY ACK needs to happen */ 602bd1fdf8cSDavid Howells unsigned long ack_lost_at; /* When ACK is figured as lost */ 603a158bdd3SDavid Howells unsigned long resend_at; /* When next resend needs to happen */ 604a158bdd3SDavid Howells unsigned long ping_at; /* When next to send a ping */ 605415f44e4SDavid Howells unsigned long keepalive_at; /* When next to send a keepalive ping */ 606a158bdd3SDavid Howells unsigned long expect_rx_by; /* When we expect to get a packet by */ 607a158bdd3SDavid Howells unsigned long expect_req_by; /* When we expect to get a request DATA packet by */ 608a158bdd3SDavid Howells unsigned long expect_term_by; /* When we expect call termination by */ 609a158bdd3SDavid Howells u32 next_rx_timo; /* Timeout for next Rx packet (jif) */ 610a158bdd3SDavid Howells u32 next_req_timo; /* Timeout for next Rx request packet (jif) */ 611248f219cSDavid Howells struct timer_list timer; /* Combined event timer */ 6123feda9d6SDavid Howells struct work_struct destroyer; /* In-process-context destroyer */ 613d001648eSDavid Howells rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ 61417926a79SDavid Howells struct list_head link; /* link in master call list */ 615245500d8SDavid Howells struct list_head chan_wait_link; /* Link in conn->bundle->waiting_calls */ 616f66d7490SDavid Howells struct hlist_node error_link; /* link in error distribution list */ 617248f219cSDavid Howells struct list_head accept_link; /* Link in rx->acceptq */ 618248f219cSDavid Howells struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ 619248f219cSDavid Howells struct list_head sock_link; /* Link in rx->sock_calls */ 620248f219cSDavid Howells struct rb_node sock_node; /* Node in rx->calls */ 62115f661dcSDavid Howells struct list_head attend_link; /* Link in local->call_attend_q */ 622a4ea4c47SDavid Howells struct rxrpc_txbuf *tx_pending; /* Tx buffer being filled */ 62345025bceSDavid Howells wait_queue_head_t waitq; /* Wait queue for channel or Tx */ 624e754eba6SDavid Howells s64 tx_total_len; /* Total length left to be transmitted (or -1) */ 62517926a79SDavid Howells unsigned long user_call_ID; /* user-defined call ID */ 62617926a79SDavid Howells unsigned long flags; 62717926a79SDavid Howells unsigned long events; 62820acbd9aSDavid Howells spinlock_t notify_lock; /* Kernel notification lock */ 62917926a79SDavid Howells rwlock_t state_lock; /* lock for state transition */ 630a343b174SDavid Howells const char *send_abort_why; /* String indicating why the abort was sent */ 631a343b174SDavid Howells s32 send_abort; /* Abort code to be sent */ 632a343b174SDavid Howells short send_abort_err; /* Error to be associated with the abort */ 633a343b174SDavid Howells s32 abort_code; /* Local/remote abort code */ 634f5c17aaeSDavid Howells int error; /* Local error incurred */ 635cf13258fSDavid Howells enum rxrpc_call_state state; /* current state of call */ 636cf13258fSDavid Howells enum rxrpc_call_completion completion; /* Call completion condition */ 637a0575429SDavid Howells refcount_t ref; 638278ac0cdSDavid Howells u8 security_ix; /* Security type */ 639e138aa7dSDavid Howells enum rxrpc_interruptibility interruptibility; /* At what point call may be interrupted */ 640dabe5a79SDavid Howells u32 call_id; /* call ID on connection */ 641dabe5a79SDavid Howells u32 cid; /* connection ID plus channel index */ 642f3441d41SDavid Howells u32 security_level; /* Security level selected */ 643dabe5a79SDavid Howells int debug_id; /* debug ID for printks */ 6448e83134dSDavid Howells unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ 6458e83134dSDavid Howells unsigned short rx_pkt_len; /* Current recvmsg packet len */ 64617926a79SDavid Howells 6475d7edbc9SDavid Howells /* Transmitted data tracking. */ 648a4ea4c47SDavid Howells spinlock_t tx_lock; /* Transmit queue lock */ 649cf37b598SDavid Howells struct list_head tx_sendmsg; /* Sendmsg prepared packets */ 650a4ea4c47SDavid Howells struct list_head tx_buffer; /* Buffer of transmissible packets */ 651a4ea4c47SDavid Howells rxrpc_seq_t tx_bottom; /* First packet in buffer */ 652a4ea4c47SDavid Howells rxrpc_seq_t tx_transmitted; /* Highest packet transmitted */ 653cf37b598SDavid Howells rxrpc_seq_t tx_prepared; /* Highest Tx slot prepared. */ 654248f219cSDavid Howells rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ 655c7e86acfSDavid Howells u16 tx_backoff; /* Delay to insert due to Tx failure */ 6565d7edbc9SDavid Howells u8 tx_winsize; /* Maximum size of Tx window */ 657a4ea4c47SDavid Howells #define RXRPC_TX_MAX_WINDOW 128 6581fc4fa2aSDavid Howells ktime_t tx_last_sent; /* Last time a transmission occurred */ 6595d7edbc9SDavid Howells 6605d7edbc9SDavid Howells /* Received data tracking */ 6615d7edbc9SDavid Howells struct sk_buff_head recvmsg_queue; /* Queue of packets ready for recvmsg() */ 6625d7edbc9SDavid Howells struct sk_buff_head rx_oos_queue; /* Queue of out of sequence packets */ 6635d7edbc9SDavid Howells 6645d7edbc9SDavid Howells rxrpc_seq_t rx_highest_seq; /* Higest sequence number received */ 6655d7edbc9SDavid Howells rxrpc_seq_t rx_consumed; /* Highest packet consumed */ 6665d7edbc9SDavid Howells rxrpc_serial_t rx_serial; /* Highest serial received for this call */ 6675d7edbc9SDavid Howells u8 rx_winsize; /* Size of Rx window */ 66857494343SDavid Howells 66957494343SDavid Howells /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS 67057494343SDavid Howells * is fixed, we keep these numbers in terms of segments (ie. DATA 67157494343SDavid Howells * packets) rather than bytes. 67257494343SDavid Howells */ 67357494343SDavid Howells #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN 6745086d9a9SDavid Howells #define RXRPC_MIN_CWND (RXRPC_TX_SMSS > 2190 ? 2 : RXRPC_TX_SMSS > 1095 ? 3 : 4) 67557494343SDavid Howells u8 cong_cwnd; /* Congestion window size */ 67657494343SDavid Howells u8 cong_extra; /* Extra to send for congestion management */ 67757494343SDavid Howells u8 cong_ssthresh; /* Slow-start threshold */ 67857494343SDavid Howells enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */ 67957494343SDavid Howells u8 cong_dup_acks; /* Count of ACKs showing missing packets */ 68057494343SDavid Howells u8 cong_cumul_acks; /* Cumulative ACK count */ 68157494343SDavid Howells ktime_t cong_tstamp; /* Last time cwnd was changed */ 68257494343SDavid Howells 6838940ba3cSDavid Howells /* Receive-phase ACK management (ACKs we send). */ 6844e36a95eSDavid Howells u8 ackr_reason; /* reason to ACK */ 6850d12f8a4SDavid Howells rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ 6865d7edbc9SDavid Howells atomic64_t ackr_window; /* Base (in LSW) and top (in MSW) of SACK window */ 6879a3dedcfSDavid Howells atomic_t ackr_nr_unacked; /* Number of unacked packets */ 6889a3dedcfSDavid Howells atomic_t ackr_nr_consumed; /* Number of packets needing hard ACK */ 6895d7edbc9SDavid Howells struct { 6905d7edbc9SDavid Howells #define RXRPC_SACK_SIZE 256 6915d7edbc9SDavid Howells /* SACK table for soft-acked packets */ 6925d7edbc9SDavid Howells u8 ackr_sack_table[RXRPC_SACK_SIZE]; 6935d7edbc9SDavid Howells } __aligned(8); 694a5af7e1fSDavid Howells 6954700c4d8SDavid Howells /* RTT management */ 6964700c4d8SDavid Howells rxrpc_serial_t rtt_serial[4]; /* Serial number of DATA or PING sent */ 6974700c4d8SDavid Howells ktime_t rtt_sent_at[4]; /* Time packet sent */ 6984700c4d8SDavid Howells unsigned long rtt_avail; /* Mask of available slots in bits 0-3, 6994700c4d8SDavid Howells * Mask of pending samples in 8-11 */ 7004700c4d8SDavid Howells #define RXRPC_CALL_RTT_AVAIL_MASK 0xf 7014700c4d8SDavid Howells #define RXRPC_CALL_RTT_PEND_SHIFT 8 70217926a79SDavid Howells 7038940ba3cSDavid Howells /* Transmission-phase ACK management (ACKs we've received). */ 70457494343SDavid Howells ktime_t acks_latest_ts; /* Timestamp of latest ACK received */ 7058940ba3cSDavid Howells rxrpc_seq_t acks_first_seq; /* first sequence number received */ 70681524b63SDavid Howells rxrpc_seq_t acks_prev_seq; /* Highest previousPacket received */ 707a4ea4c47SDavid Howells rxrpc_seq_t acks_hard_ack; /* Latest hard-ack point */ 70831a1b989SDavid Howells rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */ 709589a0c1eSDavid Howells rxrpc_serial_t acks_highest_serial; /* Highest serial number ACK'd */ 71031a1b989SDavid Howells }; 71131a1b989SDavid Howells 71231a1b989SDavid Howells /* 71357494343SDavid Howells * Summary of a new ACK and the changes it made to the Tx buffer packet states. 71431a1b989SDavid Howells */ 71531a1b989SDavid Howells struct rxrpc_ack_summary { 7161fc4fa2aSDavid Howells u16 nr_acks; /* Number of ACKs in packet */ 7171fc4fa2aSDavid Howells u16 nr_new_acks; /* Number of new ACKs in packet */ 7181fc4fa2aSDavid Howells u16 nr_rot_new_acks; /* Number of rotated new ACKs */ 71931a1b989SDavid Howells u8 ack_reason; 720d57a3a15SDavid Howells bool saw_nacks; /* Saw NACKs in packet */ 72131a1b989SDavid Howells bool new_low_nack; /* T if new low NACK found */ 72257494343SDavid Howells bool retrans_timeo; /* T if reTx due to timeout happened */ 72357494343SDavid Howells u8 flight_size; /* Number of unreceived transmissions */ 72457494343SDavid Howells /* Place to stash values for tracing */ 72557494343SDavid Howells enum rxrpc_congest_mode mode:8; 72657494343SDavid Howells u8 cwnd; 72757494343SDavid Howells u8 ssthresh; 72857494343SDavid Howells u8 dup_acks; 72957494343SDavid Howells u8 cumulative_acks; 73017926a79SDavid Howells }; 73117926a79SDavid Howells 73248124178SDavid Howells /* 73348124178SDavid Howells * sendmsg() cmsg-specified parameters. 73448124178SDavid Howells */ 73548124178SDavid Howells enum rxrpc_command { 73648124178SDavid Howells RXRPC_CMD_SEND_DATA, /* send data message */ 73748124178SDavid Howells RXRPC_CMD_SEND_ABORT, /* request abort generation */ 73848124178SDavid Howells RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */ 7392d914c1bSDavid Howells RXRPC_CMD_CHARGE_ACCEPT, /* [server] charge accept preallocation */ 74048124178SDavid Howells }; 74148124178SDavid Howells 74248124178SDavid Howells struct rxrpc_call_params { 74348124178SDavid Howells s64 tx_total_len; /* Total Tx data length (if send data) */ 74448124178SDavid Howells unsigned long user_call_ID; /* User's call ID */ 74548124178SDavid Howells struct { 74648124178SDavid Howells u32 hard; /* Maximum lifetime (sec) */ 74748124178SDavid Howells u32 idle; /* Max time since last data packet (msec) */ 74848124178SDavid Howells u32 normal; /* Max time since last call packet (msec) */ 74948124178SDavid Howells } timeouts; 75048124178SDavid Howells u8 nr_timeouts; /* Number of timeouts specified */ 751b7a7d674SDavid Howells bool kernel; /* T if kernel is making the call */ 752e138aa7dSDavid Howells enum rxrpc_interruptibility interruptibility; /* How is interruptible is the call? */ 75348124178SDavid Howells }; 75448124178SDavid Howells 75548124178SDavid Howells struct rxrpc_send_params { 75648124178SDavid Howells struct rxrpc_call_params call; 75748124178SDavid Howells u32 abort_code; /* Abort code to Tx (if abort) */ 75848124178SDavid Howells enum rxrpc_command command : 8; /* The command to implement */ 75948124178SDavid Howells bool exclusive; /* Shared or exclusive call */ 76048124178SDavid Howells bool upgrade; /* If the connection is upgradeable */ 76148124178SDavid Howells }; 76248124178SDavid Howells 76302a19356SDavid Howells /* 76402a19356SDavid Howells * Buffer of data to be output as a packet. 76502a19356SDavid Howells */ 76602a19356SDavid Howells struct rxrpc_txbuf { 76702a19356SDavid Howells struct rcu_head rcu; 768cf37b598SDavid Howells struct list_head call_link; /* Link in call->tx_sendmsg/tx_buffer */ 76902a19356SDavid Howells struct list_head tx_link; /* Link in live Enc queue or Tx queue */ 77002a19356SDavid Howells ktime_t last_sent; /* Time at which last transmitted */ 77102a19356SDavid Howells refcount_t ref; 77202a19356SDavid Howells rxrpc_seq_t seq; /* Sequence number of this packet */ 77302a19356SDavid Howells unsigned int call_debug_id; 77402a19356SDavid Howells unsigned int debug_id; 77502a19356SDavid Howells unsigned int len; /* Amount of data in buffer */ 77602a19356SDavid Howells unsigned int space; /* Remaining data space */ 77702a19356SDavid Howells unsigned int offset; /* Offset of fill point */ 77802a19356SDavid Howells unsigned long flags; 779d57a3a15SDavid Howells #define RXRPC_TXBUF_LAST 0 /* Set if last packet in Tx phase */ 780d57a3a15SDavid Howells #define RXRPC_TXBUF_RESENT 1 /* Set if has been resent */ 78172f0c6fbSDavid Howells u8 /*enum rxrpc_propose_ack_trace*/ ack_why; /* If ack, why */ 78202a19356SDavid Howells struct { 78302a19356SDavid Howells /* The packet for encrypting and DMA'ing. We align it such 78402a19356SDavid Howells * that data[] aligns correctly for any crypto blocksize. 78502a19356SDavid Howells */ 78602a19356SDavid Howells u8 pad[64 - sizeof(struct rxrpc_wire_header)]; 78702a19356SDavid Howells struct rxrpc_wire_header wire; /* Network-ready header */ 78872f0c6fbSDavid Howells union { 78902a19356SDavid Howells u8 data[RXRPC_JUMBO_DATALEN]; /* Data packet */ 79072f0c6fbSDavid Howells struct { 79172f0c6fbSDavid Howells struct rxrpc_ackpacket ack; 79272f0c6fbSDavid Howells u8 acks[0]; 79372f0c6fbSDavid Howells }; 79472f0c6fbSDavid Howells }; 79502a19356SDavid Howells } __aligned(64); 79602a19356SDavid Howells }; 79702a19356SDavid Howells 79802a19356SDavid Howells static inline bool rxrpc_sending_to_server(const struct rxrpc_txbuf *txb) 79902a19356SDavid Howells { 80002a19356SDavid Howells return txb->wire.flags & RXRPC_CLIENT_INITIATED; 80102a19356SDavid Howells } 80202a19356SDavid Howells 80302a19356SDavid Howells static inline bool rxrpc_sending_to_client(const struct rxrpc_txbuf *txb) 80402a19356SDavid Howells { 80502a19356SDavid Howells return !rxrpc_sending_to_server(txb); 80602a19356SDavid Howells } 80702a19356SDavid Howells 808df844fd4SDavid Howells #include <trace/events/rxrpc.h> 809df844fd4SDavid Howells 81017926a79SDavid Howells /* 811651350d1SDavid Howells * af_rxrpc.c 81217926a79SDavid Howells */ 813a4ea4c47SDavid Howells extern atomic_t rxrpc_n_rx_skbs; 814651350d1SDavid Howells extern struct workqueue_struct *rxrpc_workqueue; 81517926a79SDavid Howells 81617926a79SDavid Howells /* 8170d81a51aSDavid Howells * call_accept.c 81817926a79SDavid Howells */ 81900e90712SDavid Howells int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); 82000e90712SDavid Howells void rxrpc_discard_prealloc(struct rxrpc_sock *); 82131d35a02SDavid Howells int rxrpc_new_incoming_call(struct rxrpc_local *, struct rxrpc_peer *, 8225e6ef4f1SDavid Howells struct rxrpc_connection *, struct sockaddr_rxrpc *, 823248f219cSDavid Howells struct sk_buff *); 8244f95dd78SDavid Howells void rxrpc_accept_incoming_calls(struct rxrpc_local *); 8252d914c1bSDavid Howells int rxrpc_user_charge_accept(struct rxrpc_sock *, unsigned long); 82617926a79SDavid Howells 82717926a79SDavid Howells /* 8280d81a51aSDavid Howells * call_event.c 82917926a79SDavid Howells */ 83072f0c6fbSDavid Howells void rxrpc_propose_ping(struct rxrpc_call *call, u32 serial, 83172f0c6fbSDavid Howells enum rxrpc_propose_ack_trace why); 83272f0c6fbSDavid Howells void rxrpc_send_ACK(struct rxrpc_call *, u8, rxrpc_serial_t, enum rxrpc_propose_ack_trace); 833530403d9SDavid Howells void rxrpc_propose_delay_ACK(struct rxrpc_call *, rxrpc_serial_t, 834530403d9SDavid Howells enum rxrpc_propose_ack_trace); 835a4ea4c47SDavid Howells void rxrpc_shrink_call_tx_buffer(struct rxrpc_call *); 8365e6ef4f1SDavid Howells void rxrpc_resend(struct rxrpc_call *call, struct sk_buff *ack_skb); 83717926a79SDavid Howells 8384a7f62f9SDavid Howells void rxrpc_reduce_call_timer(struct rxrpc_call *call, 839a158bdd3SDavid Howells unsigned long expire_at, 840a158bdd3SDavid Howells unsigned long now, 8414a7f62f9SDavid Howells enum rxrpc_timer_trace why); 8424a7f62f9SDavid Howells 8435e6ef4f1SDavid Howells void rxrpc_input_call_event(struct rxrpc_call *call, struct sk_buff *skb); 8445e6ef4f1SDavid Howells 84517926a79SDavid Howells /* 8460d81a51aSDavid Howells * call_object.c 84717926a79SDavid Howells */ 848f5c17aaeSDavid Howells extern const char *const rxrpc_call_states[]; 849f5c17aaeSDavid Howells extern const char *const rxrpc_call_completions[]; 85017926a79SDavid Howells extern struct kmem_cache *rxrpc_call_jar; 85117926a79SDavid Howells 85215f661dcSDavid Howells void rxrpc_poke_call(struct rxrpc_call *call, enum rxrpc_call_poke_trace what); 8532341e077SDavid Howells struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); 854a25e21f0SDavid Howells struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *, gfp_t, unsigned int); 8552341e077SDavid Howells struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, 85619ffa01cSDavid Howells struct rxrpc_conn_parameters *, 857999b69f8SDavid Howells struct sockaddr_rxrpc *, 858a25e21f0SDavid Howells struct rxrpc_call_params *, gfp_t, 859a25e21f0SDavid Howells unsigned int); 860248f219cSDavid Howells void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, 86142886ffeSDavid Howells struct sk_buff *); 8628d94aa38SDavid Howells void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); 863c1b1203dSJoe Perches void rxrpc_release_calls_on_socket(struct rxrpc_sock *); 864cb0fc0c9SDavid Howells void rxrpc_see_call(struct rxrpc_call *, enum rxrpc_call_trace); 8655e6ef4f1SDavid Howells struct rxrpc_call *rxrpc_try_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 866fff72429SDavid Howells void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 867fff72429SDavid Howells void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); 86800e90712SDavid Howells void rxrpc_cleanup_call(struct rxrpc_call *); 8692baec2c3SDavid Howells void rxrpc_destroy_all_calls(struct rxrpc_net *); 87017926a79SDavid Howells 871dabe5a79SDavid Howells static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) 872dabe5a79SDavid Howells { 873dabe5a79SDavid Howells return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); 874dabe5a79SDavid Howells } 875dabe5a79SDavid Howells 876dabe5a79SDavid Howells static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) 877dabe5a79SDavid Howells { 878dabe5a79SDavid Howells return !rxrpc_is_service_call(call); 879dabe5a79SDavid Howells } 880dabe5a79SDavid Howells 88117926a79SDavid Howells /* 8824a3388c8SDavid Howells * conn_client.c 8834a3388c8SDavid Howells */ 88445025bceSDavid Howells extern unsigned int rxrpc_reap_client_connections; 885a158bdd3SDavid Howells extern unsigned long rxrpc_conn_idle_client_expiry; 886a158bdd3SDavid Howells extern unsigned long rxrpc_conn_idle_client_fast_expiry; 8874a3388c8SDavid Howells extern struct idr rxrpc_client_conn_ids; 8884a3388c8SDavid Howells 889eb9b9d22SDavid Howells void rxrpc_destroy_client_conn_ids(void); 890fa3492abSDavid Howells struct rxrpc_bundle *rxrpc_get_bundle(struct rxrpc_bundle *, enum rxrpc_bundle_trace); 891fa3492abSDavid Howells void rxrpc_put_bundle(struct rxrpc_bundle *, enum rxrpc_bundle_trace); 8925e33a23bSDavid Howells int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_call *, 8935e33a23bSDavid Howells struct rxrpc_conn_parameters *, struct sockaddr_rxrpc *, 8945e33a23bSDavid Howells gfp_t); 89545025bceSDavid Howells void rxrpc_expose_client_call(struct rxrpc_call *); 896245500d8SDavid Howells void rxrpc_disconnect_client_call(struct rxrpc_bundle *, struct rxrpc_call *); 8977fa25105SDavid Howells void rxrpc_put_client_conn(struct rxrpc_connection *, enum rxrpc_conn_trace); 8982baec2c3SDavid Howells void rxrpc_discard_expired_client_conns(struct work_struct *); 8992baec2c3SDavid Howells void rxrpc_destroy_all_client_connections(struct rxrpc_net *); 900d12040b6SDavid Howells void rxrpc_clean_up_local_conns(struct rxrpc_local *); 9014a3388c8SDavid Howells 9024a3388c8SDavid Howells /* 9030d81a51aSDavid Howells * conn_event.c 9040d81a51aSDavid Howells */ 90530df927bSDavid Howells void rxrpc_conn_retransmit_call(struct rxrpc_connection *conn, struct sk_buff *skb, 90630df927bSDavid Howells unsigned int channel); 907*a00ce28bSDavid Howells int rxrpc_abort_conn(struct rxrpc_connection *conn, struct sk_buff *skb, 908*a00ce28bSDavid Howells s32 abort_code, int err, const char *why); 9090d81a51aSDavid Howells void rxrpc_process_connection(struct work_struct *); 910ddc7834aSDavid Howells void rxrpc_process_delayed_final_acks(struct rxrpc_connection *, bool); 9115e6ef4f1SDavid Howells int rxrpc_input_conn_packet(struct rxrpc_connection *conn, struct sk_buff *skb); 912f2cce89aSDavid Howells void rxrpc_input_conn_event(struct rxrpc_connection *conn, struct sk_buff *skb); 9130d81a51aSDavid Howells 914*a00ce28bSDavid Howells static inline bool rxrpc_is_conn_aborted(const struct rxrpc_connection *conn) 915*a00ce28bSDavid Howells { 916*a00ce28bSDavid Howells /* Order reading the abort info after the state check. */ 917*a00ce28bSDavid Howells return smp_load_acquire(&conn->state) == RXRPC_CONN_ABORTED; 918*a00ce28bSDavid Howells } 919*a00ce28bSDavid Howells 9200d81a51aSDavid Howells /* 9210d81a51aSDavid Howells * conn_object.c 92217926a79SDavid Howells */ 923dad8aff7SDavid Howells extern unsigned int rxrpc_connection_expiry; 924f859ab61SDavid Howells extern unsigned int rxrpc_closed_conn_expiry; 92517926a79SDavid Howells 926f2cce89aSDavid Howells void rxrpc_poke_conn(struct rxrpc_connection *conn, enum rxrpc_conn_trace why); 9273cec055cSDavid Howells struct rxrpc_connection *rxrpc_alloc_connection(struct rxrpc_net *, gfp_t); 9285e6ef4f1SDavid Howells struct rxrpc_connection *rxrpc_find_client_connection_rcu(struct rxrpc_local *, 929393a2a20SDavid Howells struct sockaddr_rxrpc *, 9305e6ef4f1SDavid Howells struct sk_buff *); 93145025bceSDavid Howells void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); 932999b69f8SDavid Howells void rxrpc_disconnect_call(struct rxrpc_call *); 9333cec055cSDavid Howells void rxrpc_kill_client_conn(struct rxrpc_connection *); 9343cec055cSDavid Howells void rxrpc_queue_conn(struct rxrpc_connection *, enum rxrpc_conn_trace); 9357fa25105SDavid Howells void rxrpc_see_connection(struct rxrpc_connection *, enum rxrpc_conn_trace); 9367fa25105SDavid Howells struct rxrpc_connection *rxrpc_get_connection(struct rxrpc_connection *, 9377fa25105SDavid Howells enum rxrpc_conn_trace); 9387fa25105SDavid Howells struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *, 9397fa25105SDavid Howells enum rxrpc_conn_trace); 9403cec055cSDavid Howells void rxrpc_put_connection(struct rxrpc_connection *, enum rxrpc_conn_trace); 9412baec2c3SDavid Howells void rxrpc_service_connection_reaper(struct work_struct *); 9422baec2c3SDavid Howells void rxrpc_destroy_all_connections(struct rxrpc_net *); 94317926a79SDavid Howells 94419ffa01cSDavid Howells static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) 94519ffa01cSDavid Howells { 94619ffa01cSDavid Howells return conn->out_clientflag; 94719ffa01cSDavid Howells } 94819ffa01cSDavid Howells 94919ffa01cSDavid Howells static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) 95019ffa01cSDavid Howells { 951e8d70ce1SDavid Howells return !rxrpc_conn_is_client(conn); 95219ffa01cSDavid Howells } 95319ffa01cSDavid Howells 9543136ef49SDavid Howells static inline void rxrpc_reduce_conn_timer(struct rxrpc_connection *conn, 9553136ef49SDavid Howells unsigned long expire_at) 9563136ef49SDavid Howells { 9573136ef49SDavid Howells timer_reduce(&conn->timer, expire_at); 9583136ef49SDavid Howells } 9593136ef49SDavid Howells 96017926a79SDavid Howells /* 9617877a4a4SDavid Howells * conn_service.c 9627877a4a4SDavid Howells */ 9638496af50SDavid Howells struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, 9648496af50SDavid Howells struct sk_buff *); 9652baec2c3SDavid Howells struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t); 966063c60d3SDavid Howells void rxrpc_new_incoming_connection(struct rxrpc_sock *, struct rxrpc_connection *, 967ec832bd0SDavid Howells const struct rxrpc_security *, struct sk_buff *); 968001c1122SDavid Howells void rxrpc_unpublish_service_conn(struct rxrpc_connection *); 9697877a4a4SDavid Howells 9707877a4a4SDavid Howells /* 9710d81a51aSDavid Howells * input.c 97217926a79SDavid Howells */ 9735086d9a9SDavid Howells void rxrpc_congestion_degrade(struct rxrpc_call *); 9745e6ef4f1SDavid Howells void rxrpc_input_call_packet(struct rxrpc_call *, struct sk_buff *); 9755e6ef4f1SDavid Howells void rxrpc_implicit_end_call(struct rxrpc_call *, struct sk_buff *); 97696b2d69bSDavid Howells 97796b2d69bSDavid Howells /* 97896b2d69bSDavid Howells * io_thread.c 97996b2d69bSDavid Howells */ 980446b3e14SDavid Howells int rxrpc_encap_rcv(struct sock *, struct sk_buff *); 981ff734825SDavid Howells void rxrpc_error_report(struct sock *); 982a275da62SDavid Howells int rxrpc_io_thread(void *data); 983a275da62SDavid Howells static inline void rxrpc_wake_up_io_thread(struct rxrpc_local *local) 984a275da62SDavid Howells { 985a275da62SDavid Howells wake_up_process(local->io_thread); 986a275da62SDavid Howells } 98717926a79SDavid Howells 98817926a79SDavid Howells /* 9890d81a51aSDavid Howells * insecure.c 99017926a79SDavid Howells */ 9910d81a51aSDavid Howells extern const struct rxrpc_security rxrpc_no_security; 99217926a79SDavid Howells 99317926a79SDavid Howells /* 9940d81a51aSDavid Howells * key.c 99517926a79SDavid Howells */ 99617926a79SDavid Howells extern struct key_type key_type_rxrpc; 99717926a79SDavid Howells 998a7b75c5aSChristoph Hellwig int rxrpc_request_key(struct rxrpc_sock *, sockptr_t , int); 99910674a03SBaolin Wang int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t, 1000c1b1203dSJoe Perches u32); 100117926a79SDavid Howells 100217926a79SDavid Howells /* 100387563616SDavid Howells * local_event.c 100487563616SDavid Howells */ 10055e6ef4f1SDavid Howells void rxrpc_send_version_request(struct rxrpc_local *local, 10065e6ef4f1SDavid Howells struct rxrpc_host_header *hdr, 10075e6ef4f1SDavid Howells struct sk_buff *skb); 100887563616SDavid Howells 100987563616SDavid Howells /* 10100d81a51aSDavid Howells * local_object.c 101117926a79SDavid Howells */ 10122baec2c3SDavid Howells struct rxrpc_local *rxrpc_lookup_local(struct net *, const struct sockaddr_rxrpc *); 10130fde882fSDavid Howells struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *, enum rxrpc_local_trace); 10140fde882fSDavid Howells struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *, enum rxrpc_local_trace); 10150fde882fSDavid Howells void rxrpc_put_local(struct rxrpc_local *, enum rxrpc_local_trace); 10160fde882fSDavid Howells struct rxrpc_local *rxrpc_use_local(struct rxrpc_local *, enum rxrpc_local_trace); 10170fde882fSDavid Howells void rxrpc_unuse_local(struct rxrpc_local *, enum rxrpc_local_trace); 1018a275da62SDavid Howells void rxrpc_destroy_local(struct rxrpc_local *local); 10192baec2c3SDavid Howells void rxrpc_destroy_all_locals(struct rxrpc_net *); 1020e0e4d82fSDavid Howells 10210fde882fSDavid Howells static inline bool __rxrpc_use_local(struct rxrpc_local *local, 10220fde882fSDavid Howells enum rxrpc_local_trace why) 102304d36d74SDavid Howells { 10240fde882fSDavid Howells int r, u; 10250fde882fSDavid Howells 10260fde882fSDavid Howells r = refcount_read(&local->ref); 10270fde882fSDavid Howells u = atomic_fetch_add_unless(&local->active_users, 1, 0); 10280fde882fSDavid Howells trace_rxrpc_local(local->debug_id, why, r, u); 10290fde882fSDavid Howells return u != 0; 10300fde882fSDavid Howells } 10310fde882fSDavid Howells 10320fde882fSDavid Howells static inline void rxrpc_see_local(struct rxrpc_local *local, 10330fde882fSDavid Howells enum rxrpc_local_trace why) 10340fde882fSDavid Howells { 10350fde882fSDavid Howells int r, u; 10360fde882fSDavid Howells 10370fde882fSDavid Howells r = refcount_read(&local->ref); 10380fde882fSDavid Howells u = atomic_read(&local->active_users); 10390fde882fSDavid Howells trace_rxrpc_local(local->debug_id, why, r, u); 104004d36d74SDavid Howells } 104104d36d74SDavid Howells 1042e0e4d82fSDavid Howells /* 10438e688d9cSDavid Howells * misc.c 10448e688d9cSDavid Howells */ 10450e119b41SDavid Howells extern unsigned int rxrpc_max_backlog __read_mostly; 1046a158bdd3SDavid Howells extern unsigned long rxrpc_soft_ack_delay; 1047a158bdd3SDavid Howells extern unsigned long rxrpc_idle_ack_delay; 10488e688d9cSDavid Howells extern unsigned int rxrpc_rx_window_size; 10498e688d9cSDavid Howells extern unsigned int rxrpc_rx_mtu; 10508e688d9cSDavid Howells extern unsigned int rxrpc_rx_jumbo_max; 10518e688d9cSDavid Howells 10528e688d9cSDavid Howells /* 10532baec2c3SDavid Howells * net_ns.c 10542baec2c3SDavid Howells */ 10552baec2c3SDavid Howells extern unsigned int rxrpc_net_id; 10562baec2c3SDavid Howells extern struct pernet_operations rxrpc_net_ops; 10572baec2c3SDavid Howells 10582baec2c3SDavid Howells static inline struct rxrpc_net *rxrpc_net(struct net *net) 10592baec2c3SDavid Howells { 10602baec2c3SDavid Howells return net_generic(net, rxrpc_net_id); 10612baec2c3SDavid Howells } 10622baec2c3SDavid Howells 10632baec2c3SDavid Howells /* 10640d81a51aSDavid Howells * output.c 10650d81a51aSDavid Howells */ 1066b0346843SDavid Howells int rxrpc_send_ack_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb); 106726cb02aaSDavid Howells int rxrpc_send_abort_packet(struct rxrpc_call *); 1068a4ea4c47SDavid Howells int rxrpc_send_data_packet(struct rxrpc_call *, struct rxrpc_txbuf *); 1069*a00ce28bSDavid Howells void rxrpc_send_conn_abort(struct rxrpc_connection *conn); 10705e6ef4f1SDavid Howells void rxrpc_reject_packet(struct rxrpc_local *local, struct sk_buff *skb); 1071ace45becSDavid Howells void rxrpc_send_keepalive(struct rxrpc_peer *); 1072cf37b598SDavid Howells void rxrpc_transmit_one(struct rxrpc_call *call, struct rxrpc_txbuf *txb); 10730d81a51aSDavid Howells 10740d81a51aSDavid Howells /* 1075abe89ef0SDavid Howells * peer_event.c 10760d81a51aSDavid Howells */ 1077ff734825SDavid Howells void rxrpc_input_error(struct rxrpc_local *, struct sk_buff *); 1078ace45becSDavid Howells void rxrpc_peer_keepalive_worker(struct work_struct *); 10790d81a51aSDavid Howells 10800d81a51aSDavid Howells /* 10810d81a51aSDavid Howells * peer_object.c 10820d81a51aSDavid Howells */ 1083be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, 1084be6e6707SDavid Howells const struct sockaddr_rxrpc *); 10858a758d98SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *local, 10868a758d98SDavid Howells struct sockaddr_rxrpc *srx, gfp_t gfp); 108747c810a7SDavid Howells struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t, 108847c810a7SDavid Howells enum rxrpc_peer_trace); 10898a758d98SDavid Howells void rxrpc_new_incoming_peer(struct rxrpc_local *local, struct rxrpc_peer *peer); 109017226f12SDavid Howells void rxrpc_destroy_all_peers(struct rxrpc_net *); 109147c810a7SDavid Howells struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *, enum rxrpc_peer_trace); 109247c810a7SDavid Howells struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *, enum rxrpc_peer_trace); 109347c810a7SDavid Howells void rxrpc_put_peer(struct rxrpc_peer *, enum rxrpc_peer_trace); 10940d81a51aSDavid Howells 10950d81a51aSDavid Howells /* 10960d81a51aSDavid Howells * proc.c 10970d81a51aSDavid Howells */ 1098c3506372SChristoph Hellwig extern const struct seq_operations rxrpc_call_seq_ops; 1099c3506372SChristoph Hellwig extern const struct seq_operations rxrpc_connection_seq_ops; 1100bc0e7cf4SDavid Howells extern const struct seq_operations rxrpc_peer_seq_ops; 110133912c26SDavid Howells extern const struct seq_operations rxrpc_local_seq_ops; 11020d81a51aSDavid Howells 11030d81a51aSDavid Howells /* 11040d81a51aSDavid Howells * recvmsg.c 11050d81a51aSDavid Howells */ 1106248f219cSDavid Howells void rxrpc_notify_socket(struct rxrpc_call *); 11073067bf8cSDavid Howells bool __rxrpc_set_call_completion(struct rxrpc_call *, enum rxrpc_call_completion, u32, int); 11083067bf8cSDavid Howells bool rxrpc_set_call_completion(struct rxrpc_call *, enum rxrpc_call_completion, u32, int); 11093067bf8cSDavid Howells bool __rxrpc_call_completed(struct rxrpc_call *); 11103067bf8cSDavid Howells bool rxrpc_call_completed(struct rxrpc_call *); 11113067bf8cSDavid Howells bool __rxrpc_abort_call(const char *, struct rxrpc_call *, rxrpc_seq_t, u32, int); 11123067bf8cSDavid Howells bool rxrpc_abort_call(const char *, struct rxrpc_call *, rxrpc_seq_t, u32, int); 11130d81a51aSDavid Howells int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); 11140d81a51aSDavid Howells 11150d81a51aSDavid Howells /* 11163067bf8cSDavid Howells * Abort a call due to a protocol error. 11173067bf8cSDavid Howells */ 11183067bf8cSDavid Howells static inline bool __rxrpc_abort_eproto(struct rxrpc_call *call, 11193067bf8cSDavid Howells struct sk_buff *skb, 11203067bf8cSDavid Howells const char *eproto_why, 11213067bf8cSDavid Howells const char *why, 11223067bf8cSDavid Howells u32 abort_code) 11233067bf8cSDavid Howells { 11243067bf8cSDavid Howells struct rxrpc_skb_priv *sp = rxrpc_skb(skb); 11253067bf8cSDavid Howells 11263067bf8cSDavid Howells trace_rxrpc_rx_eproto(call, sp->hdr.serial, eproto_why); 11273067bf8cSDavid Howells return rxrpc_abort_call(why, call, sp->hdr.seq, abort_code, -EPROTO); 11283067bf8cSDavid Howells } 11293067bf8cSDavid Howells 11303067bf8cSDavid Howells #define rxrpc_abort_eproto(call, skb, eproto_why, abort_why, abort_code) \ 11313067bf8cSDavid Howells __rxrpc_abort_eproto((call), (skb), tracepoint_string(eproto_why), \ 11323067bf8cSDavid Howells (abort_why), (abort_code)) 11333067bf8cSDavid Howells 11343067bf8cSDavid Howells /* 1135c410bf01SDavid Howells * rtt.c 1136c410bf01SDavid Howells */ 11374700c4d8SDavid Howells void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, int, 1138c410bf01SDavid Howells rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); 1139c410bf01SDavid Howells unsigned long rxrpc_get_rto_backoff(struct rxrpc_peer *, bool); 1140c410bf01SDavid Howells void rxrpc_peer_init_rtt(struct rxrpc_peer *); 1141c410bf01SDavid Howells 1142c410bf01SDavid Howells /* 1143648af7fcSDavid Howells * rxkad.c 1144648af7fcSDavid Howells */ 1145648af7fcSDavid Howells #ifdef CONFIG_RXKAD 1146648af7fcSDavid Howells extern const struct rxrpc_security rxkad; 1147648af7fcSDavid Howells #endif 1148648af7fcSDavid Howells 1149648af7fcSDavid Howells /* 11500d81a51aSDavid Howells * security.c 11510d81a51aSDavid Howells */ 11520d81a51aSDavid Howells int __init rxrpc_init_security(void); 115312da59fcSDavid Howells const struct rxrpc_security *rxrpc_security_lookup(u8); 11540d81a51aSDavid Howells void rxrpc_exit_security(void); 1155f3441d41SDavid Howells int rxrpc_init_client_call_security(struct rxrpc_call *); 11560d81a51aSDavid Howells int rxrpc_init_client_conn_security(struct rxrpc_connection *); 1157ec832bd0SDavid Howells const struct rxrpc_security *rxrpc_get_incoming_security(struct rxrpc_sock *, 1158063c60d3SDavid Howells struct sk_buff *); 1159ec832bd0SDavid Howells struct key *rxrpc_look_up_server_security(struct rxrpc_connection *, 1160ec832bd0SDavid Howells struct sk_buff *, u32, u32); 11610d81a51aSDavid Howells 11620d81a51aSDavid Howells /* 11630b58b8a1SDavid Howells * sendmsg.c 11640b58b8a1SDavid Howells */ 1165a343b174SDavid Howells bool rxrpc_propose_abort(struct rxrpc_call *call, 1166a343b174SDavid Howells u32 abort_code, int error, const char *why); 11670b58b8a1SDavid Howells int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); 11680b58b8a1SDavid Howells 11690b58b8a1SDavid Howells /* 1170ca7fb100SDavid Howells * server_key.c 1171ca7fb100SDavid Howells */ 1172ca7fb100SDavid Howells extern struct key_type key_type_rxrpc_s; 1173ca7fb100SDavid Howells 1174ca7fb100SDavid Howells int rxrpc_server_keyring(struct rxrpc_sock *, sockptr_t, int); 1175ca7fb100SDavid Howells 1176ca7fb100SDavid Howells /* 11770d81a51aSDavid Howells * skbuff.c 11780d81a51aSDavid Howells */ 1179d001648eSDavid Howells void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); 118071f3ca40SDavid Howells void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); 118171f3ca40SDavid Howells void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); 1182d0d5c0cdSDavid Howells void rxrpc_eaten_skb(struct sk_buff *, enum rxrpc_skb_trace); 118371f3ca40SDavid Howells void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); 118471f3ca40SDavid Howells void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); 1185df844fd4SDavid Howells void rxrpc_purge_queue(struct sk_buff_head *); 11860d81a51aSDavid Howells 11870d81a51aSDavid Howells /* 1188b0154246SDavid Howells * stats.c 1189b0154246SDavid Howells */ 1190b0154246SDavid Howells int rxrpc_stats_show(struct seq_file *seq, void *v); 1191b0154246SDavid Howells int rxrpc_stats_clear(struct file *file, char *buf, size_t size); 1192b0154246SDavid Howells 1193b0154246SDavid Howells #define rxrpc_inc_stat(rxnet, s) atomic_inc(&(rxnet)->s) 1194b0154246SDavid Howells #define rxrpc_dec_stat(rxnet, s) atomic_dec(&(rxnet)->s) 1195b0154246SDavid Howells 1196b0154246SDavid Howells /* 11975873c083SDavid Howells * sysctl.c 11985873c083SDavid Howells */ 11995873c083SDavid Howells #ifdef CONFIG_SYSCTL 12005873c083SDavid Howells extern int __init rxrpc_sysctl_init(void); 12015873c083SDavid Howells extern void rxrpc_sysctl_exit(void); 12025873c083SDavid Howells #else 12035873c083SDavid Howells static inline int __init rxrpc_sysctl_init(void) { return 0; } 12045873c083SDavid Howells static inline void rxrpc_sysctl_exit(void) {} 12055873c083SDavid Howells #endif 12065873c083SDavid Howells 12075873c083SDavid Howells /* 120802a19356SDavid Howells * txbuf.c 120902a19356SDavid Howells */ 121002a19356SDavid Howells extern atomic_t rxrpc_nr_txbuf; 121102a19356SDavid Howells struct rxrpc_txbuf *rxrpc_alloc_txbuf(struct rxrpc_call *call, u8 packet_type, 121202a19356SDavid Howells gfp_t gfp); 121302a19356SDavid Howells void rxrpc_get_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what); 121402a19356SDavid Howells void rxrpc_see_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what); 121502a19356SDavid Howells void rxrpc_put_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what); 121602a19356SDavid Howells 121702a19356SDavid Howells /* 1218be6e6707SDavid Howells * utils.c 1219be6e6707SDavid Howells */ 12205a790b73SDavid Howells int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 1221be6e6707SDavid Howells 1222248f219cSDavid Howells static inline bool before(u32 seq1, u32 seq2) 1223248f219cSDavid Howells { 1224248f219cSDavid Howells return (s32)(seq1 - seq2) < 0; 1225248f219cSDavid Howells } 1226248f219cSDavid Howells static inline bool before_eq(u32 seq1, u32 seq2) 1227248f219cSDavid Howells { 1228248f219cSDavid Howells return (s32)(seq1 - seq2) <= 0; 1229248f219cSDavid Howells } 1230248f219cSDavid Howells static inline bool after(u32 seq1, u32 seq2) 1231248f219cSDavid Howells { 1232248f219cSDavid Howells return (s32)(seq1 - seq2) > 0; 1233248f219cSDavid Howells } 1234248f219cSDavid Howells static inline bool after_eq(u32 seq1, u32 seq2) 1235248f219cSDavid Howells { 1236248f219cSDavid Howells return (s32)(seq1 - seq2) >= 0; 1237248f219cSDavid Howells } 1238248f219cSDavid Howells 1239be6e6707SDavid Howells /* 124017926a79SDavid Howells * debug tracing 124117926a79SDavid Howells */ 124295c96174SEric Dumazet extern unsigned int rxrpc_debug; 124317926a79SDavid Howells 124417926a79SDavid Howells #define dbgprintk(FMT,...) \ 12459f389f4bSSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 124617926a79SDavid Howells 12470dc47877SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 12480dc47877SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 124917926a79SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 125017926a79SDavid Howells 125117926a79SDavid Howells 125217926a79SDavid Howells #if defined(__KDEBUG) 125317926a79SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 125417926a79SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 125517926a79SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 125617926a79SDavid Howells 125717926a79SDavid Howells #elif defined(CONFIG_AF_RXRPC_DEBUG) 125817926a79SDavid Howells #define RXRPC_DEBUG_KENTER 0x01 125917926a79SDavid Howells #define RXRPC_DEBUG_KLEAVE 0x02 126017926a79SDavid Howells #define RXRPC_DEBUG_KDEBUG 0x04 126117926a79SDavid Howells 126217926a79SDavid Howells #define _enter(FMT,...) \ 126317926a79SDavid Howells do { \ 126417926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ 126517926a79SDavid Howells kenter(FMT,##__VA_ARGS__); \ 126617926a79SDavid Howells } while (0) 126717926a79SDavid Howells 126817926a79SDavid Howells #define _leave(FMT,...) \ 126917926a79SDavid Howells do { \ 127017926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ 127117926a79SDavid Howells kleave(FMT,##__VA_ARGS__); \ 127217926a79SDavid Howells } while (0) 127317926a79SDavid Howells 127417926a79SDavid Howells #define _debug(FMT,...) \ 127517926a79SDavid Howells do { \ 127617926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ 127717926a79SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 127817926a79SDavid Howells } while (0) 127917926a79SDavid Howells 128017926a79SDavid Howells #else 128112fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 128212fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 128312fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 128417926a79SDavid Howells #endif 128517926a79SDavid Howells 128617926a79SDavid Howells /* 128717926a79SDavid Howells * debug assertion checking 128817926a79SDavid Howells */ 128917926a79SDavid Howells #if 1 // defined(__KDEBUGALL) 129017926a79SDavid Howells 129117926a79SDavid Howells #define ASSERT(X) \ 129217926a79SDavid Howells do { \ 129317926a79SDavid Howells if (unlikely(!(X))) { \ 12949b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 129517926a79SDavid Howells BUG(); \ 129617926a79SDavid Howells } \ 129717926a79SDavid Howells } while (0) 129817926a79SDavid Howells 129917926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 130017926a79SDavid Howells do { \ 1301cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1302cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 13039b6d5398SJoe Perches if (unlikely(!(_x OP _y))) { \ 13049b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1305cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1306cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 130717926a79SDavid Howells BUG(); \ 130817926a79SDavid Howells } \ 130917926a79SDavid Howells } while (0) 131017926a79SDavid Howells 131117926a79SDavid Howells #define ASSERTIF(C, X) \ 131217926a79SDavid Howells do { \ 131317926a79SDavid Howells if (unlikely((C) && !(X))) { \ 13149b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 131517926a79SDavid Howells BUG(); \ 131617926a79SDavid Howells } \ 131717926a79SDavid Howells } while (0) 131817926a79SDavid Howells 131917926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 132017926a79SDavid Howells do { \ 1321cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1322cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 13239b6d5398SJoe Perches if (unlikely((C) && !(_x OP _y))) { \ 13249b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1325cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1326cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 132717926a79SDavid Howells BUG(); \ 132817926a79SDavid Howells } \ 132917926a79SDavid Howells } while (0) 133017926a79SDavid Howells 133117926a79SDavid Howells #else 133217926a79SDavid Howells 133317926a79SDavid Howells #define ASSERT(X) \ 133417926a79SDavid Howells do { \ 133517926a79SDavid Howells } while (0) 133617926a79SDavid Howells 133717926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 133817926a79SDavid Howells do { \ 133917926a79SDavid Howells } while (0) 134017926a79SDavid Howells 134117926a79SDavid Howells #define ASSERTIF(C, X) \ 134217926a79SDavid Howells do { \ 134317926a79SDavid Howells } while (0) 134417926a79SDavid Howells 134517926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 134617926a79SDavid Howells do { \ 134717926a79SDavid Howells } while (0) 134817926a79SDavid Howells 134917926a79SDavid Howells #endif /* __KDEBUGALL */ 1350