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 */ 412953d3b8SDavid Howells RXRPC_SKB_MARK_SERVICE_CONN_SECURED, /* Service connection response has been verified */ 42ece64fecSDavid Howells RXRPC_SKB_MARK_REJECT_BUSY, /* Reject with BUSY */ 43ece64fecSDavid Howells RXRPC_SKB_MARK_REJECT_ABORT, /* Reject with ABORT (code in skb->priority) */ 44d001648eSDavid Howells }; 45d001648eSDavid Howells 46d001648eSDavid Howells /* 4717926a79SDavid Howells * sk_state for RxRPC sockets 4817926a79SDavid Howells */ 4917926a79SDavid Howells enum { 502341e077SDavid Howells RXRPC_UNBOUND = 0, 512341e077SDavid Howells RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */ 5217926a79SDavid Howells RXRPC_CLIENT_BOUND, /* client local address bound */ 5317926a79SDavid Howells RXRPC_SERVER_BOUND, /* server local address bound */ 5428036f44SDavid Howells RXRPC_SERVER_BOUND2, /* second server local address bound */ 5517926a79SDavid Howells RXRPC_SERVER_LISTENING, /* server listening for connections */ 56210f0353SDavid Howells RXRPC_SERVER_LISTEN_DISABLED, /* server listening disabled */ 5717926a79SDavid Howells RXRPC_CLOSE, /* socket is being closed */ 5817926a79SDavid Howells }; 5917926a79SDavid Howells 6017926a79SDavid Howells /* 612baec2c3SDavid Howells * Per-network namespace data. 622baec2c3SDavid Howells */ 632baec2c3SDavid Howells struct rxrpc_net { 642baec2c3SDavid Howells struct proc_dir_entry *proc_net; /* Subdir in /proc/net */ 652baec2c3SDavid Howells u32 epoch; /* Local epoch for detecting local-end reset */ 662baec2c3SDavid Howells struct list_head calls; /* List of calls active in this namespace */ 67ad25f5cbSDavid Howells spinlock_t call_lock; /* Lock for ->calls */ 68d3be4d24SDavid Howells atomic_t nr_calls; /* Count of allocated calls */ 692baec2c3SDavid Howells 7031f5f9a1SDavid Howells atomic_t nr_conns; 712baec2c3SDavid Howells struct list_head conn_proc_list; /* List of conns in this namespace for proc */ 722baec2c3SDavid Howells struct list_head service_conns; /* Service conns in this namespace */ 732baec2c3SDavid Howells rwlock_t conn_lock; /* Lock for ->conn_proc_list, ->service_conns */ 743d18cbb7SDavid Howells struct work_struct service_conn_reaper; 753d18cbb7SDavid Howells struct timer_list service_conn_reap_timer; 762baec2c3SDavid Howells 77f859ab61SDavid Howells bool live; 78245500d8SDavid Howells 79245500d8SDavid Howells bool kill_all_client_conns; 80245500d8SDavid Howells atomic_t nr_client_conns; 812baec2c3SDavid Howells spinlock_t client_conn_cache_lock; /* Lock for ->*_client_conns */ 823cec055cSDavid Howells struct mutex client_conn_discard_lock; /* Prevent multiple discarders */ 832baec2c3SDavid Howells struct list_head idle_client_conns; 843d18cbb7SDavid Howells struct work_struct client_conn_reaper; 853d18cbb7SDavid Howells struct timer_list client_conn_reap_timer; 862baec2c3SDavid Howells 8733912c26SDavid Howells struct hlist_head local_endpoints; 882baec2c3SDavid Howells struct mutex local_mutex; /* Lock for ->local_endpoints */ 892baec2c3SDavid Howells 902baec2c3SDavid Howells DECLARE_HASHTABLE (peer_hash, 10); 91ace45becSDavid Howells spinlock_t peer_hash_lock; /* Lock for ->peer_hash */ 92ace45becSDavid Howells 93ace45becSDavid Howells #define RXRPC_KEEPALIVE_TIME 20 /* NAT keepalive time in seconds */ 94ace45becSDavid Howells u8 peer_keepalive_cursor; 95330bdcfaSDavid Howells time64_t peer_keepalive_base; 96330bdcfaSDavid Howells struct list_head peer_keepalive[32]; 97330bdcfaSDavid Howells struct list_head peer_keepalive_new; 98ace45becSDavid Howells struct timer_list peer_keepalive_timer; 99ace45becSDavid Howells struct work_struct peer_keepalive_work; 100b0154246SDavid Howells 101b0154246SDavid Howells atomic_t stat_tx_data; 102b0154246SDavid Howells atomic_t stat_tx_data_retrans; 103b0154246SDavid Howells atomic_t stat_tx_data_send; 104b0154246SDavid Howells atomic_t stat_tx_data_send_frag; 10532cf8edbSDavid Howells atomic_t stat_tx_data_send_fail; 10632cf8edbSDavid Howells atomic_t stat_tx_data_underflow; 10732cf8edbSDavid Howells atomic_t stat_tx_data_cwnd_reset; 108b0154246SDavid Howells atomic_t stat_rx_data; 109b0154246SDavid Howells atomic_t stat_rx_data_reqack; 110b0154246SDavid Howells atomic_t stat_rx_data_jumbo; 111f2a676d1SDavid Howells 112f2a676d1SDavid Howells atomic_t stat_tx_ack_fill; 113f2a676d1SDavid Howells atomic_t stat_tx_ack_send; 114f2a676d1SDavid Howells atomic_t stat_tx_ack_skip; 115f2a676d1SDavid Howells atomic_t stat_tx_acks[256]; 116f2a676d1SDavid Howells atomic_t stat_rx_acks[256]; 117f7fa5242SDavid Howells 118f7fa5242SDavid Howells atomic_t stat_why_req_ack[8]; 119a275da62SDavid Howells 120a275da62SDavid Howells atomic_t stat_io_loop; 1212baec2c3SDavid Howells }; 1222baec2c3SDavid Howells 1232baec2c3SDavid Howells /* 12400e90712SDavid Howells * Service backlog preallocation. 12500e90712SDavid Howells * 12600e90712SDavid Howells * This contains circular buffers of preallocated peers, connections and calls 12700e90712SDavid Howells * for incoming service calls and their head and tail pointers. This allows 12800e90712SDavid Howells * calls to be set up in the data_ready handler, thereby avoiding the need to 12900e90712SDavid Howells * shuffle packets around so much. 13000e90712SDavid Howells */ 13100e90712SDavid Howells struct rxrpc_backlog { 13200e90712SDavid Howells unsigned short peer_backlog_head; 13300e90712SDavid Howells unsigned short peer_backlog_tail; 13400e90712SDavid Howells unsigned short conn_backlog_head; 13500e90712SDavid Howells unsigned short conn_backlog_tail; 13600e90712SDavid Howells unsigned short call_backlog_head; 13700e90712SDavid Howells unsigned short call_backlog_tail; 13800e90712SDavid Howells #define RXRPC_BACKLOG_MAX 32 13900e90712SDavid Howells struct rxrpc_peer *peer_backlog[RXRPC_BACKLOG_MAX]; 14000e90712SDavid Howells struct rxrpc_connection *conn_backlog[RXRPC_BACKLOG_MAX]; 14100e90712SDavid Howells struct rxrpc_call *call_backlog[RXRPC_BACKLOG_MAX]; 14200e90712SDavid Howells }; 14300e90712SDavid Howells 14400e90712SDavid Howells /* 14517926a79SDavid Howells * RxRPC socket definition 14617926a79SDavid Howells */ 14717926a79SDavid Howells struct rxrpc_sock { 14817926a79SDavid Howells /* WARNING: sk has to be the first member */ 14917926a79SDavid Howells struct sock sk; 150d001648eSDavid Howells rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */ 15100e90712SDavid Howells rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */ 15217926a79SDavid Howells struct rxrpc_local *local; /* local endpoint */ 15300e90712SDavid Howells struct rxrpc_backlog *backlog; /* Preallocation for services */ 154248f219cSDavid Howells spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */ 155248f219cSDavid Howells struct list_head sock_calls; /* List of calls owned by this socket */ 156248f219cSDavid Howells struct list_head to_be_accepted; /* calls awaiting acceptance */ 157248f219cSDavid Howells struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */ 158248f219cSDavid Howells rwlock_t recvmsg_lock; /* Lock for recvmsg_q */ 15917926a79SDavid Howells struct key *key; /* security for this socket */ 16017926a79SDavid Howells struct key *securities; /* list of server security descriptors */ 16100e90712SDavid Howells struct rb_root calls; /* User ID -> call mapping */ 16217926a79SDavid Howells unsigned long flags; 1632341e077SDavid Howells #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ 16417926a79SDavid Howells rwlock_t call_lock; /* lock for calls */ 16517926a79SDavid Howells u32 min_sec_level; /* minimum security level */ 16617926a79SDavid Howells #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT 167cc8feb8eSDavid Howells bool exclusive; /* Exclusive connection for a client socket */ 16828036f44SDavid Howells u16 second_service; /* Additional service bound to the endpoint */ 1694722974dSDavid Howells struct { 1704722974dSDavid Howells /* Service upgrade information */ 1714722974dSDavid Howells u16 from; /* Service ID to upgrade (if not 0) */ 1724722974dSDavid Howells u16 to; /* service ID to upgrade to */ 1734722974dSDavid Howells } service_upgrade; 174cc8feb8eSDavid Howells sa_family_t family; /* Protocol family created with */ 1754722974dSDavid Howells struct sockaddr_rxrpc srx; /* Primary Service/local addresses */ 1762341e077SDavid Howells struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ 17717926a79SDavid Howells }; 17817926a79SDavid Howells 17917926a79SDavid Howells #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) 18017926a79SDavid Howells 18117926a79SDavid Howells /* 1820d12f8a4SDavid Howells * CPU-byteorder normalised Rx packet header. 1830d12f8a4SDavid Howells */ 1840d12f8a4SDavid Howells struct rxrpc_host_header { 1850d12f8a4SDavid Howells u32 epoch; /* client boot timestamp */ 1860d12f8a4SDavid Howells u32 cid; /* connection and channel ID */ 1870d12f8a4SDavid Howells u32 callNumber; /* call ID (0 for connection-level packets) */ 1880d12f8a4SDavid Howells u32 seq; /* sequence number of pkt in call stream */ 1890d12f8a4SDavid Howells u32 serial; /* serial number of pkt sent to network */ 1900d12f8a4SDavid Howells u8 type; /* packet type */ 1910d12f8a4SDavid Howells u8 flags; /* packet flags */ 1920d12f8a4SDavid Howells u8 userStatus; /* app-layer defined status */ 1930d12f8a4SDavid Howells u8 securityIndex; /* security protocol ID */ 1940d12f8a4SDavid Howells union { 1950d12f8a4SDavid Howells u16 _rsvd; /* reserved */ 1960d12f8a4SDavid Howells u16 cksum; /* kerberos security checksum */ 1970d12f8a4SDavid Howells }; 1980d12f8a4SDavid Howells u16 serviceId; /* service ID */ 1990d12f8a4SDavid Howells } __packed; 2000d12f8a4SDavid Howells 2010d12f8a4SDavid Howells /* 20217926a79SDavid Howells * RxRPC socket buffer private variables 20317926a79SDavid Howells * - max 48 bytes (struct sk_buff::cb) 20417926a79SDavid Howells */ 20517926a79SDavid Howells struct rxrpc_skb_priv { 206f2cce89aSDavid Howells struct rxrpc_connection *conn; /* Connection referred to (poke packet) */ 207d4d02d8bSDavid Howells u16 offset; /* Offset of data */ 208d4d02d8bSDavid Howells u16 len; /* Length of data */ 209d4d02d8bSDavid Howells u8 flags; 210d4d02d8bSDavid Howells #define RXRPC_RX_VERIFIED 0x01 21117926a79SDavid Howells 2120d12f8a4SDavid Howells struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ 21317926a79SDavid Howells }; 21417926a79SDavid Howells 21517926a79SDavid Howells #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) 21617926a79SDavid Howells 21717926a79SDavid Howells /* 21817926a79SDavid Howells * RxRPC security module interface 21917926a79SDavid Howells */ 22017926a79SDavid Howells struct rxrpc_security { 22117926a79SDavid Howells const char *name; /* name of this service */ 22217926a79SDavid Howells u8 security_index; /* security type provided */ 223063c60d3SDavid Howells u32 no_key_abort; /* Abort code indicating no key */ 22417926a79SDavid Howells 225648af7fcSDavid Howells /* Initialise a security service */ 226648af7fcSDavid Howells int (*init)(void); 227648af7fcSDavid Howells 228648af7fcSDavid Howells /* Clean up a security service */ 229648af7fcSDavid Howells void (*exit)(void); 230648af7fcSDavid Howells 23112da59fcSDavid Howells /* Parse the information from a server key */ 23212da59fcSDavid Howells int (*preparse_server_key)(struct key_preparsed_payload *); 23312da59fcSDavid Howells 23412da59fcSDavid Howells /* Clean up the preparse buffer after parsing a server key */ 23512da59fcSDavid Howells void (*free_preparse_server_key)(struct key_preparsed_payload *); 23612da59fcSDavid Howells 23712da59fcSDavid Howells /* Destroy the payload of a server key */ 23812da59fcSDavid Howells void (*destroy_server_key)(struct key *); 23912da59fcSDavid Howells 240d5953f65SDavid Howells /* Describe a server key */ 241d5953f65SDavid Howells void (*describe_server_key)(const struct key *, struct seq_file *); 242d5953f65SDavid Howells 24317926a79SDavid Howells /* initialise a connection's security */ 24441057ebdSDavid Howells int (*init_connection_security)(struct rxrpc_connection *, 24541057ebdSDavid Howells struct rxrpc_key_token *); 24617926a79SDavid Howells 247d7d775b1SDavid Howells /* Work out how much data we can store in a packet, given an estimate 248d7d775b1SDavid Howells * of the amount of data remaining. 249d7d775b1SDavid Howells */ 250d7d775b1SDavid Howells int (*how_much_data)(struct rxrpc_call *, size_t, 251d7d775b1SDavid Howells size_t *, size_t *, size_t *); 25217926a79SDavid Howells 25317926a79SDavid Howells /* impose security on a packet */ 254a4ea4c47SDavid Howells int (*secure_packet)(struct rxrpc_call *, struct rxrpc_txbuf *); 25517926a79SDavid Howells 25617926a79SDavid Howells /* verify the security on a received packet */ 257d4d02d8bSDavid Howells int (*verify_packet)(struct rxrpc_call *, struct sk_buff *); 258248f219cSDavid Howells 2591db88c53SDavid Howells /* Free crypto request on a call */ 2601db88c53SDavid Howells void (*free_call_crypto)(struct rxrpc_call *); 2611db88c53SDavid Howells 26217926a79SDavid Howells /* issue a challenge */ 26317926a79SDavid Howells int (*issue_challenge)(struct rxrpc_connection *); 26417926a79SDavid Howells 26517926a79SDavid Howells /* respond to a challenge */ 26617926a79SDavid Howells int (*respond_to_challenge)(struct rxrpc_connection *, 267a00ce28bSDavid Howells struct sk_buff *); 26817926a79SDavid Howells 26917926a79SDavid Howells /* verify a response */ 27017926a79SDavid Howells int (*verify_response)(struct rxrpc_connection *, 271a00ce28bSDavid Howells struct sk_buff *); 27217926a79SDavid Howells 27317926a79SDavid Howells /* clear connection security */ 27417926a79SDavid Howells void (*clear)(struct rxrpc_connection *); 27517926a79SDavid Howells }; 27617926a79SDavid Howells 27717926a79SDavid Howells /* 2784f95dd78SDavid Howells * RxRPC local transport endpoint description 2794f95dd78SDavid Howells * - owned by a single AF_RXRPC socket 2804f95dd78SDavid Howells * - pointed to by transport socket struct sk_user_data 28117926a79SDavid Howells */ 28217926a79SDavid Howells struct rxrpc_local { 2834f95dd78SDavid Howells struct rcu_head rcu; 284730c5fd4SDavid Howells atomic_t active_users; /* Number of users of the local endpoint */ 285a0575429SDavid Howells refcount_t ref; /* Number of references to the structure */ 2868a758d98SDavid Howells struct net *net; /* The network namespace */ 2878a758d98SDavid Howells struct rxrpc_net *rxnet; /* Our bits in the network namespace */ 28833912c26SDavid Howells struct hlist_node link; 28917926a79SDavid Howells struct socket *socket; /* my UDP socket */ 290a275da62SDavid Howells struct task_struct *io_thread; 2918fbcc833SDavid Howells struct completion io_thread_ready; /* Indication that the I/O thread started */ 2921e9e5c95SDavid Howells struct rxrpc_sock __rcu *service; /* Service(s) listening on this endpoint */ 29317926a79SDavid Howells struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ 294a275da62SDavid Howells struct sk_buff_head rx_queue; /* Received packets */ 295f2cce89aSDavid Howells struct list_head conn_attend_q; /* Conns requiring immediate attention */ 29615f661dcSDavid Howells struct list_head call_attend_q; /* Calls requiring immediate attention */ 297245500d8SDavid Howells struct rb_root client_bundles; /* Client connection bundles by socket params */ 298245500d8SDavid Howells spinlock_t client_bundles_lock; /* Lock for client_bundles */ 29917926a79SDavid Howells spinlock_t lock; /* access lock */ 30017926a79SDavid Howells rwlock_t services_lock; /* lock for services list */ 30117926a79SDavid Howells int debug_id; /* debug ID for printks */ 3024f95dd78SDavid Howells bool dead; 303f859ab61SDavid Howells bool service_closed; /* Service socket closed */ 304f06cb291SDavid Howells struct idr conn_ids; /* List of connection IDs */ 305f06cb291SDavid Howells spinlock_t conn_lock; /* Lock for client connection pool */ 30617926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 30717926a79SDavid Howells }; 30817926a79SDavid Howells 30917926a79SDavid Howells /* 31017926a79SDavid Howells * RxRPC remote transport endpoint definition 311be6e6707SDavid Howells * - matched by local endpoint, remote port, address and protocol type 31217926a79SDavid Howells */ 31317926a79SDavid Howells struct rxrpc_peer { 314be6e6707SDavid Howells struct rcu_head rcu; /* This must be first */ 315a0575429SDavid Howells refcount_t ref; 316be6e6707SDavid Howells unsigned long hash_key; 317be6e6707SDavid Howells struct hlist_node hash_link; 318be6e6707SDavid Howells struct rxrpc_local *local; 319f66d7490SDavid Howells struct hlist_head error_targets; /* targets for net error distribution */ 320aa390bbeSDavid Howells struct rb_root service_conns; /* Service connections */ 321330bdcfaSDavid Howells struct list_head keepalive_link; /* Link in net->peer_keepalive[] */ 322ace45becSDavid Howells time64_t last_tx_at; /* Last time packet sent here */ 3238496af50SDavid Howells seqlock_t service_conn_lock; 32417926a79SDavid Howells spinlock_t lock; /* access lock */ 32595c96174SEric Dumazet unsigned int if_mtu; /* interface MTU for this peer */ 32695c96174SEric Dumazet unsigned int mtu; /* network MTU for this peer */ 32795c96174SEric Dumazet unsigned int maxdata; /* data size (MTU - hdrsize) */ 32817926a79SDavid Howells unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ 32917926a79SDavid Howells int debug_id; /* debug ID for printks */ 33017926a79SDavid Howells struct sockaddr_rxrpc srx; /* remote address */ 33117926a79SDavid Howells 33217926a79SDavid Howells /* calculated RTT cache */ 33317926a79SDavid Howells #define RXRPC_RTT_CACHE_SIZE 32 334c1e15b49SDavid Howells spinlock_t rtt_input_lock; /* RTT lock for input routine */ 3350d4b103cSDavid Howells ktime_t rtt_last_req; /* Time of last RTT request */ 336c410bf01SDavid Howells unsigned int rtt_count; /* Number of samples we've got */ 337c410bf01SDavid Howells 338c410bf01SDavid Howells u32 srtt_us; /* smoothed round trip time << 3 in usecs */ 339c410bf01SDavid Howells u32 mdev_us; /* medium deviation */ 340c410bf01SDavid Howells u32 mdev_max_us; /* maximal mdev for the last rtt period */ 341c410bf01SDavid Howells u32 rttvar_us; /* smoothed mdev_max */ 342c410bf01SDavid Howells u32 rto_j; /* Retransmission timeout in jiffies */ 343c410bf01SDavid Howells u8 backoff; /* Backoff timeout */ 344f7aec129SDavid Howells 3451fc4fa2aSDavid Howells u8 cong_ssthresh; /* Congestion slow-start threshold */ 34617926a79SDavid Howells }; 34717926a79SDavid Howells 34817926a79SDavid Howells /* 34919ffa01cSDavid Howells * Keys for matching a connection. 35019ffa01cSDavid Howells */ 35119ffa01cSDavid Howells struct rxrpc_conn_proto { 352e8d70ce1SDavid Howells union { 353e8d70ce1SDavid Howells struct { 35419ffa01cSDavid Howells u32 epoch; /* epoch of this connection */ 35519ffa01cSDavid Howells u32 cid; /* connection ID */ 356e8d70ce1SDavid Howells }; 357e8d70ce1SDavid Howells u64 index_key; 35819ffa01cSDavid Howells }; 35919ffa01cSDavid Howells }; 36019ffa01cSDavid Howells 36119ffa01cSDavid Howells struct rxrpc_conn_parameters { 36219ffa01cSDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 36319ffa01cSDavid Howells struct key *key; /* Security details */ 36419ffa01cSDavid Howells bool exclusive; /* T if conn is exclusive */ 3654e255721SDavid Howells bool upgrade; /* T if service ID can be upgraded */ 36619ffa01cSDavid Howells u16 service_id; /* Service ID for this connection */ 36719ffa01cSDavid Howells u32 security_level; /* Security level selected */ 36819ffa01cSDavid Howells }; 36919ffa01cSDavid Howells 37019ffa01cSDavid Howells /* 371a00ce28bSDavid Howells * Call completion condition (state == RXRPC_CALL_COMPLETE). 372a00ce28bSDavid Howells */ 373a00ce28bSDavid Howells enum rxrpc_call_completion { 374a00ce28bSDavid Howells RXRPC_CALL_SUCCEEDED, /* - Normal termination */ 375a00ce28bSDavid Howells RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ 376a00ce28bSDavid Howells RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ 377a00ce28bSDavid Howells RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */ 378a00ce28bSDavid Howells RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ 379a00ce28bSDavid Howells NR__RXRPC_CALL_COMPLETIONS 380a00ce28bSDavid Howells }; 381a00ce28bSDavid Howells 382a00ce28bSDavid Howells /* 383bba304dbSDavid Howells * Bits in the connection flags. 384bba304dbSDavid Howells */ 385bba304dbSDavid Howells enum rxrpc_conn_flag { 386bba304dbSDavid Howells RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ 387001c1122SDavid Howells RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ 38845025bceSDavid Howells RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ 3894e255721SDavid Howells RXRPC_CONN_PROBING_FOR_UPGRADE, /* Probing for service upgrade */ 3903136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_0, /* Need final ACK for channel 0 */ 3913136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_1, /* Need final ACK for channel 1 */ 3923136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_2, /* Need final ACK for channel 2 */ 3933136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_3, /* Need final ACK for channel 3 */ 394bba304dbSDavid Howells }; 395bba304dbSDavid Howells 3963136ef49SDavid Howells #define RXRPC_CONN_FINAL_ACK_MASK ((1UL << RXRPC_CONN_FINAL_ACK_0) | \ 3973136ef49SDavid Howells (1UL << RXRPC_CONN_FINAL_ACK_1) | \ 3983136ef49SDavid Howells (1UL << RXRPC_CONN_FINAL_ACK_2) | \ 3993136ef49SDavid Howells (1UL << RXRPC_CONN_FINAL_ACK_3)) 4003136ef49SDavid Howells 401bba304dbSDavid Howells /* 402bba304dbSDavid Howells * Events that can be raised upon a connection. 403bba304dbSDavid Howells */ 404bba304dbSDavid Howells enum rxrpc_conn_event { 405bba304dbSDavid Howells RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ 406a00ce28bSDavid Howells RXRPC_CONN_EV_ABORT_CALLS, /* Abort attached calls */ 407bba304dbSDavid Howells }; 408bba304dbSDavid Howells 409bba304dbSDavid Howells /* 410bba304dbSDavid Howells * The connection protocol state. 411bba304dbSDavid Howells */ 412bba304dbSDavid Howells enum rxrpc_conn_proto_state { 413bba304dbSDavid Howells RXRPC_CONN_UNUSED, /* Connection not yet attempted */ 414bba304dbSDavid Howells RXRPC_CONN_CLIENT, /* Client connection */ 41500e90712SDavid Howells RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ 416bba304dbSDavid Howells RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ 417bba304dbSDavid Howells RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ 418bba304dbSDavid Howells RXRPC_CONN_SERVICE, /* Service secured connection */ 419a00ce28bSDavid Howells RXRPC_CONN_ABORTED, /* Conn aborted */ 420bba304dbSDavid Howells RXRPC_CONN__NR_STATES 421bba304dbSDavid Howells }; 422bba304dbSDavid Howells 423bba304dbSDavid Howells /* 424245500d8SDavid Howells * RxRPC client connection bundle. 425245500d8SDavid Howells */ 426245500d8SDavid Howells struct rxrpc_bundle { 4272cc80086SDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 4282cc80086SDavid Howells struct rxrpc_peer *peer; /* Remote endpoint */ 4292cc80086SDavid Howells struct key *key; /* Security details */ 4301bab27afSDavid Howells const struct rxrpc_security *security; /* applied security module */ 431a0575429SDavid Howells refcount_t ref; 4323bcd6c7eSDavid Howells atomic_t active; /* Number of active users */ 433245500d8SDavid Howells unsigned int debug_id; 4342cc80086SDavid Howells u32 security_level; /* Security level selected */ 4352cc80086SDavid Howells u16 service_id; /* Service ID for this connection */ 436245500d8SDavid Howells bool try_upgrade; /* True if the bundle is attempting upgrade */ 437245500d8SDavid Howells bool alloc_conn; /* True if someone's getting a conn */ 4382cc80086SDavid Howells bool exclusive; /* T if conn is exclusive */ 4392cc80086SDavid Howells bool upgrade; /* T if service ID can be upgraded */ 4408806245aSDavid Howells short alloc_error; /* Error from last conn allocation */ 441245500d8SDavid Howells spinlock_t channel_lock; 442245500d8SDavid Howells struct rb_node local_node; /* Node in local->client_conns */ 443245500d8SDavid Howells struct list_head waiting_calls; /* Calls waiting for channels */ 444245500d8SDavid Howells unsigned long avail_chans; /* Mask of available channels */ 445245500d8SDavid Howells struct rxrpc_connection *conns[4]; /* The connections in the bundle (max 4) */ 446245500d8SDavid Howells }; 447245500d8SDavid Howells 448245500d8SDavid Howells /* 44917926a79SDavid Howells * RxRPC connection definition 450aa390bbeSDavid Howells * - matched by { local, peer, epoch, conn_id, direction } 45117926a79SDavid Howells * - each connection can only handle four simultaneous calls 45217926a79SDavid Howells */ 45317926a79SDavid Howells struct rxrpc_connection { 45419ffa01cSDavid Howells struct rxrpc_conn_proto proto; 4552cc80086SDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 4562cc80086SDavid Howells struct rxrpc_peer *peer; /* Remote endpoint */ 4573cec055cSDavid Howells struct rxrpc_net *rxnet; /* Network namespace to which call belongs */ 4582cc80086SDavid Howells struct key *key; /* Security details */ 459f2cce89aSDavid Howells struct list_head attend_link; /* Link in local->conn_attend_q */ 46019ffa01cSDavid Howells 461a0575429SDavid Howells refcount_t ref; 4623cec055cSDavid Howells atomic_t active; /* Active count for service conns */ 46345025bceSDavid Howells struct rcu_head rcu; 46445025bceSDavid Howells struct list_head cache_link; 465a1399f8bSDavid Howells 466245500d8SDavid Howells unsigned char act_chans; /* Mask of active channels */ 467a1399f8bSDavid Howells struct rxrpc_channel { 4683136ef49SDavid Howells unsigned long final_ack_at; /* Time at which to issue final ACK */ 469a1399f8bSDavid Howells struct rxrpc_call __rcu *call; /* Active call */ 4704764c0daSDavid Howells unsigned int call_debug_id; /* call->debug_id */ 471a1399f8bSDavid Howells u32 call_id; /* ID of current call */ 472a1399f8bSDavid Howells u32 call_counter; /* Call ID counter */ 473a1399f8bSDavid Howells u32 last_call; /* ID of last call */ 47418bfeba5SDavid Howells u8 last_type; /* Type of last packet */ 47518bfeba5SDavid Howells union { 47618bfeba5SDavid Howells u32 last_seq; 47718bfeba5SDavid Howells u32 last_abort; 47818bfeba5SDavid Howells }; 479a1399f8bSDavid Howells } channels[RXRPC_MAXCALLS]; 480999b69f8SDavid Howells 4813136ef49SDavid Howells struct timer_list timer; /* Conn event timer */ 48217926a79SDavid Howells struct work_struct processor; /* connection event processor */ 4833cec055cSDavid Howells struct work_struct destructor; /* In-process-context destroyer */ 484245500d8SDavid Howells struct rxrpc_bundle *bundle; /* Client connection bundle */ 485aa390bbeSDavid Howells struct rb_node service_node; /* Node in peer->service_conns */ 4864d028b2cSDavid Howells struct list_head proc_link; /* link in procfs list */ 48717926a79SDavid Howells struct list_head link; /* link in master connection list */ 48817926a79SDavid Howells struct sk_buff_head rx_queue; /* received conn-level packets */ 489521bb304SDavid Howells 490648af7fcSDavid Howells const struct rxrpc_security *security; /* applied security module */ 491521bb304SDavid Howells union { 492521bb304SDavid Howells struct { 49369d826faSKees Cook struct crypto_sync_skcipher *cipher; /* encryption handle */ 49417926a79SDavid Howells struct rxrpc_crypt csum_iv; /* packet checksum base */ 495521bb304SDavid Howells u32 nonce; /* response re-use preventer */ 496521bb304SDavid Howells } rxkad; 497521bb304SDavid Howells }; 4984a3388c8SDavid Howells unsigned long flags; 49917926a79SDavid Howells unsigned long events; 500f51b4480SDavid Howells unsigned long idle_timestamp; /* Time at which last became idle */ 50117926a79SDavid Howells spinlock_t state_lock; /* state-change lock */ 502cf13258fSDavid Howells enum rxrpc_conn_proto_state state; /* current state of connection */ 503a00ce28bSDavid Howells enum rxrpc_call_completion completion; /* Completion condition */ 504a00ce28bSDavid Howells s32 abort_code; /* Abort code of connection abort */ 50517926a79SDavid Howells int debug_id; /* debug ID for printks */ 50617926a79SDavid Howells atomic_t serial; /* packet serial number counter */ 507563ea7d5SDavid Howells unsigned int hi_serial; /* highest serial number received */ 508c1e15b49SDavid Howells u32 service_id; /* Service ID, possibly upgraded */ 5092cc80086SDavid Howells u32 security_level; /* Security level selected */ 51017926a79SDavid Howells u8 security_ix; /* security type */ 51117926a79SDavid Howells u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ 512245500d8SDavid Howells u8 bundle_shift; /* Index into bundle->avail_chans */ 5132cc80086SDavid Howells bool exclusive; /* T if conn is exclusive */ 5142cc80086SDavid Howells bool upgrade; /* T if service ID can be upgraded */ 5152cc80086SDavid Howells u16 orig_service_id; /* Originally requested service ID */ 51664753092SDavid Howells short error; /* Local error code */ 51717926a79SDavid Howells }; 51817926a79SDavid Howells 519dc71db34SDavid Howells static inline bool rxrpc_to_server(const struct rxrpc_skb_priv *sp) 520dc71db34SDavid Howells { 521dc71db34SDavid Howells return sp->hdr.flags & RXRPC_CLIENT_INITIATED; 522dc71db34SDavid Howells } 523dc71db34SDavid Howells 524dc71db34SDavid Howells static inline bool rxrpc_to_client(const struct rxrpc_skb_priv *sp) 525dc71db34SDavid Howells { 526dc71db34SDavid Howells return !rxrpc_to_server(sp); 527dc71db34SDavid Howells } 528dc71db34SDavid Howells 52917926a79SDavid Howells /* 5305b8848d1SDavid Howells * Flags in call->flags. 5315b8848d1SDavid Howells */ 5325b8848d1SDavid Howells enum rxrpc_call_flag { 5335b8848d1SDavid Howells RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ 5345b8848d1SDavid Howells RXRPC_CALL_HAS_USERID, /* has a user ID attached */ 535dabe5a79SDavid Howells RXRPC_CALL_IS_SERVICE, /* Call is service call */ 53645025bceSDavid Howells RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ 537248f219cSDavid Howells RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ 538248f219cSDavid Howells RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ 539a4ea4c47SDavid Howells RXRPC_CALL_TX_ALL_ACKED, /* Last packet has been hard-acked */ 540a5af7e1fSDavid Howells RXRPC_CALL_SEND_PING, /* A ping will need to be sent */ 54157494343SDavid Howells RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */ 542c54e43d7SDavid Howells RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */ 5431a025028SDavid Howells RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */ 5445273a191SDavid Howells RXRPC_CALL_DISCONNECTED, /* The call has been disconnected */ 545b7a7d674SDavid Howells RXRPC_CALL_KERNEL, /* The call was made by the kernel */ 546245500d8SDavid Howells RXRPC_CALL_UPGRADE, /* Service upgrade was requested for the call */ 547f3441d41SDavid Howells RXRPC_CALL_EXCLUSIVE, /* The call uses a once-only connection */ 5485e6ef4f1SDavid Howells RXRPC_CALL_RX_IS_IDLE, /* Reception is idle - send an ACK */ 5495b8848d1SDavid Howells }; 5505b8848d1SDavid Howells 5515b8848d1SDavid Howells /* 5525b8848d1SDavid Howells * Events that can be raised on a call. 5535b8848d1SDavid Howells */ 5545b8848d1SDavid Howells enum rxrpc_call_event { 555bd1fdf8cSDavid Howells RXRPC_CALL_EV_ACK_LOST, /* ACK may be lost, send ping */ 5565e6ef4f1SDavid Howells RXRPC_CALL_EV_INITIAL_PING, /* Send initial ping for a new service call */ 5575b8848d1SDavid Howells }; 5585b8848d1SDavid Howells 5595b8848d1SDavid Howells /* 5605b8848d1SDavid Howells * The states that a call can be in. 5615b8848d1SDavid Howells */ 5625b8848d1SDavid Howells enum rxrpc_call_state { 563999b69f8SDavid Howells RXRPC_CALL_UNINITIALISED, 564999b69f8SDavid Howells RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ 5655b8848d1SDavid Howells RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ 5665b8848d1SDavid Howells RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ 5675b8848d1SDavid Howells RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ 56800e90712SDavid Howells RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ 5695b8848d1SDavid Howells RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ 5705b8848d1SDavid Howells RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ 5715b8848d1SDavid Howells RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ 5725b8848d1SDavid Howells RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ 5735b8848d1SDavid Howells RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ 574f5c17aaeSDavid Howells RXRPC_CALL_COMPLETE, /* - call complete */ 575f5c17aaeSDavid Howells NR__RXRPC_CALL_STATES 576f5c17aaeSDavid Howells }; 577f5c17aaeSDavid Howells 578f5c17aaeSDavid Howells /* 57957494343SDavid Howells * Call Tx congestion management modes. 58057494343SDavid Howells */ 58157494343SDavid Howells enum rxrpc_congest_mode { 58257494343SDavid Howells RXRPC_CALL_SLOW_START, 58357494343SDavid Howells RXRPC_CALL_CONGEST_AVOIDANCE, 58457494343SDavid Howells RXRPC_CALL_PACKET_LOSS, 58557494343SDavid Howells RXRPC_CALL_FAST_RETRANSMIT, 58657494343SDavid Howells NR__RXRPC_CONGEST_MODES 58757494343SDavid Howells }; 58857494343SDavid Howells 58957494343SDavid Howells /* 59017926a79SDavid Howells * RxRPC call definition 59117926a79SDavid Howells * - matched by { connection, call_id } 59217926a79SDavid Howells */ 59317926a79SDavid Howells struct rxrpc_call { 594dee46364SDavid Howells struct rcu_head rcu; 59517926a79SDavid Howells struct rxrpc_connection *conn; /* connection carrying call */ 5961bab27afSDavid Howells struct rxrpc_bundle *bundle; /* Connection bundle to use */ 597df5d8bf7SDavid Howells struct rxrpc_peer *peer; /* Peer record for remote address */ 598f3441d41SDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 5998d94aa38SDavid Howells struct rxrpc_sock __rcu *socket; /* socket responsible */ 600d3be4d24SDavid Howells struct rxrpc_net *rxnet; /* Network namespace to which call belongs */ 601f3441d41SDavid Howells struct key *key; /* Security details */ 60291fcfbe8SDavid Howells const struct rxrpc_security *security; /* applied security module */ 603540b1c48SDavid Howells struct mutex user_mutex; /* User access mutex */ 604f3441d41SDavid Howells struct sockaddr_rxrpc dest_srx; /* Destination address */ 605530403d9SDavid Howells unsigned long delay_ack_at; /* When DELAY ACK needs to happen */ 606bd1fdf8cSDavid Howells unsigned long ack_lost_at; /* When ACK is figured as lost */ 607a158bdd3SDavid Howells unsigned long resend_at; /* When next resend needs to happen */ 608a158bdd3SDavid Howells unsigned long ping_at; /* When next to send a ping */ 609415f44e4SDavid Howells unsigned long keepalive_at; /* When next to send a keepalive ping */ 610a158bdd3SDavid Howells unsigned long expect_rx_by; /* When we expect to get a packet by */ 611a158bdd3SDavid Howells unsigned long expect_req_by; /* When we expect to get a request DATA packet by */ 612a158bdd3SDavid Howells unsigned long expect_term_by; /* When we expect call termination by */ 613a158bdd3SDavid Howells u32 next_rx_timo; /* Timeout for next Rx packet (jif) */ 614a158bdd3SDavid Howells u32 next_req_timo; /* Timeout for next Rx request packet (jif) */ 615248f219cSDavid Howells struct timer_list timer; /* Combined event timer */ 6163feda9d6SDavid Howells struct work_struct destroyer; /* In-process-context destroyer */ 617d001648eSDavid Howells rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ 61817926a79SDavid Howells struct list_head link; /* link in master call list */ 619245500d8SDavid Howells struct list_head chan_wait_link; /* Link in conn->bundle->waiting_calls */ 620f66d7490SDavid Howells struct hlist_node error_link; /* link in error distribution list */ 621248f219cSDavid Howells struct list_head accept_link; /* Link in rx->acceptq */ 622248f219cSDavid Howells struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ 623248f219cSDavid Howells struct list_head sock_link; /* Link in rx->sock_calls */ 624248f219cSDavid Howells struct rb_node sock_node; /* Node in rx->calls */ 62515f661dcSDavid Howells struct list_head attend_link; /* Link in local->call_attend_q */ 626a4ea4c47SDavid Howells struct rxrpc_txbuf *tx_pending; /* Tx buffer being filled */ 62745025bceSDavid Howells wait_queue_head_t waitq; /* Wait queue for channel or Tx */ 628e754eba6SDavid Howells s64 tx_total_len; /* Total length left to be transmitted (or -1) */ 62917926a79SDavid Howells unsigned long user_call_ID; /* user-defined call ID */ 63017926a79SDavid Howells unsigned long flags; 63117926a79SDavid Howells unsigned long events; 63220acbd9aSDavid Howells spinlock_t notify_lock; /* Kernel notification lock */ 63317926a79SDavid Howells rwlock_t state_lock; /* lock for state transition */ 63457af281eSDavid Howells unsigned int send_abort_why; /* Why the abort [enum rxrpc_abort_reason] */ 635a343b174SDavid Howells s32 send_abort; /* Abort code to be sent */ 636a343b174SDavid Howells short send_abort_err; /* Error to be associated with the abort */ 63757af281eSDavid Howells rxrpc_seq_t send_abort_seq; /* DATA packet that incurred the abort (or 0) */ 638a343b174SDavid Howells s32 abort_code; /* Local/remote abort code */ 639f5c17aaeSDavid Howells int error; /* Local error incurred */ 640cf13258fSDavid Howells enum rxrpc_call_state state; /* current state of call */ 641cf13258fSDavid Howells enum rxrpc_call_completion completion; /* Call completion condition */ 642a0575429SDavid Howells refcount_t ref; 643278ac0cdSDavid Howells u8 security_ix; /* Security type */ 644e138aa7dSDavid Howells enum rxrpc_interruptibility interruptibility; /* At what point call may be interrupted */ 645dabe5a79SDavid Howells u32 call_id; /* call ID on connection */ 646dabe5a79SDavid Howells u32 cid; /* connection ID plus channel index */ 647f3441d41SDavid Howells u32 security_level; /* Security level selected */ 648dabe5a79SDavid Howells int debug_id; /* debug ID for printks */ 6498e83134dSDavid Howells unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ 6508e83134dSDavid Howells unsigned short rx_pkt_len; /* Current recvmsg packet len */ 65117926a79SDavid Howells 6525d7edbc9SDavid Howells /* Transmitted data tracking. */ 653a4ea4c47SDavid Howells spinlock_t tx_lock; /* Transmit queue lock */ 654cf37b598SDavid Howells struct list_head tx_sendmsg; /* Sendmsg prepared packets */ 655a4ea4c47SDavid Howells struct list_head tx_buffer; /* Buffer of transmissible packets */ 656a4ea4c47SDavid Howells rxrpc_seq_t tx_bottom; /* First packet in buffer */ 657a4ea4c47SDavid Howells rxrpc_seq_t tx_transmitted; /* Highest packet transmitted */ 658cf37b598SDavid Howells rxrpc_seq_t tx_prepared; /* Highest Tx slot prepared. */ 659248f219cSDavid Howells rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ 660c7e86acfSDavid Howells u16 tx_backoff; /* Delay to insert due to Tx failure */ 6615d7edbc9SDavid Howells u8 tx_winsize; /* Maximum size of Tx window */ 662a4ea4c47SDavid Howells #define RXRPC_TX_MAX_WINDOW 128 6631fc4fa2aSDavid Howells ktime_t tx_last_sent; /* Last time a transmission occurred */ 6645d7edbc9SDavid Howells 6655d7edbc9SDavid Howells /* Received data tracking */ 6665d7edbc9SDavid Howells struct sk_buff_head recvmsg_queue; /* Queue of packets ready for recvmsg() */ 6675d7edbc9SDavid Howells struct sk_buff_head rx_oos_queue; /* Queue of out of sequence packets */ 6685d7edbc9SDavid Howells 6695d7edbc9SDavid Howells rxrpc_seq_t rx_highest_seq; /* Higest sequence number received */ 6705d7edbc9SDavid Howells rxrpc_seq_t rx_consumed; /* Highest packet consumed */ 6715d7edbc9SDavid Howells rxrpc_serial_t rx_serial; /* Highest serial received for this call */ 6725d7edbc9SDavid Howells u8 rx_winsize; /* Size of Rx window */ 67357494343SDavid Howells 67457494343SDavid Howells /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS 67557494343SDavid Howells * is fixed, we keep these numbers in terms of segments (ie. DATA 67657494343SDavid Howells * packets) rather than bytes. 67757494343SDavid Howells */ 67857494343SDavid Howells #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN 6795086d9a9SDavid Howells #define RXRPC_MIN_CWND (RXRPC_TX_SMSS > 2190 ? 2 : RXRPC_TX_SMSS > 1095 ? 3 : 4) 68057494343SDavid Howells u8 cong_cwnd; /* Congestion window size */ 68157494343SDavid Howells u8 cong_extra; /* Extra to send for congestion management */ 68257494343SDavid Howells u8 cong_ssthresh; /* Slow-start threshold */ 68357494343SDavid Howells enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */ 68457494343SDavid Howells u8 cong_dup_acks; /* Count of ACKs showing missing packets */ 68557494343SDavid Howells u8 cong_cumul_acks; /* Cumulative ACK count */ 68657494343SDavid Howells ktime_t cong_tstamp; /* Last time cwnd was changed */ 68757494343SDavid Howells 6888940ba3cSDavid Howells /* Receive-phase ACK management (ACKs we send). */ 6894e36a95eSDavid Howells u8 ackr_reason; /* reason to ACK */ 6900d12f8a4SDavid Howells rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ 6915d7edbc9SDavid Howells atomic64_t ackr_window; /* Base (in LSW) and top (in MSW) of SACK window */ 6929a3dedcfSDavid Howells atomic_t ackr_nr_unacked; /* Number of unacked packets */ 6939a3dedcfSDavid Howells atomic_t ackr_nr_consumed; /* Number of packets needing hard ACK */ 6945d7edbc9SDavid Howells struct { 6955d7edbc9SDavid Howells #define RXRPC_SACK_SIZE 256 6965d7edbc9SDavid Howells /* SACK table for soft-acked packets */ 6975d7edbc9SDavid Howells u8 ackr_sack_table[RXRPC_SACK_SIZE]; 6985d7edbc9SDavid Howells } __aligned(8); 699a5af7e1fSDavid Howells 7004700c4d8SDavid Howells /* RTT management */ 7014700c4d8SDavid Howells rxrpc_serial_t rtt_serial[4]; /* Serial number of DATA or PING sent */ 7024700c4d8SDavid Howells ktime_t rtt_sent_at[4]; /* Time packet sent */ 7034700c4d8SDavid Howells unsigned long rtt_avail; /* Mask of available slots in bits 0-3, 7044700c4d8SDavid Howells * Mask of pending samples in 8-11 */ 7054700c4d8SDavid Howells #define RXRPC_CALL_RTT_AVAIL_MASK 0xf 7064700c4d8SDavid Howells #define RXRPC_CALL_RTT_PEND_SHIFT 8 70717926a79SDavid Howells 7088940ba3cSDavid Howells /* Transmission-phase ACK management (ACKs we've received). */ 70957494343SDavid Howells ktime_t acks_latest_ts; /* Timestamp of latest ACK received */ 7108940ba3cSDavid Howells rxrpc_seq_t acks_first_seq; /* first sequence number received */ 71181524b63SDavid Howells rxrpc_seq_t acks_prev_seq; /* Highest previousPacket received */ 712a4ea4c47SDavid Howells rxrpc_seq_t acks_hard_ack; /* Latest hard-ack point */ 71331a1b989SDavid Howells rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */ 714589a0c1eSDavid Howells rxrpc_serial_t acks_highest_serial; /* Highest serial number ACK'd */ 71531a1b989SDavid Howells }; 71631a1b989SDavid Howells 71731a1b989SDavid Howells /* 71857494343SDavid Howells * Summary of a new ACK and the changes it made to the Tx buffer packet states. 71931a1b989SDavid Howells */ 72031a1b989SDavid Howells struct rxrpc_ack_summary { 7211fc4fa2aSDavid Howells u16 nr_acks; /* Number of ACKs in packet */ 7221fc4fa2aSDavid Howells u16 nr_new_acks; /* Number of new ACKs in packet */ 7231fc4fa2aSDavid Howells u16 nr_rot_new_acks; /* Number of rotated new ACKs */ 72431a1b989SDavid Howells u8 ack_reason; 725d57a3a15SDavid Howells bool saw_nacks; /* Saw NACKs in packet */ 72631a1b989SDavid Howells bool new_low_nack; /* T if new low NACK found */ 72757494343SDavid Howells bool retrans_timeo; /* T if reTx due to timeout happened */ 72857494343SDavid Howells u8 flight_size; /* Number of unreceived transmissions */ 72957494343SDavid Howells /* Place to stash values for tracing */ 73057494343SDavid Howells enum rxrpc_congest_mode mode:8; 73157494343SDavid Howells u8 cwnd; 73257494343SDavid Howells u8 ssthresh; 73357494343SDavid Howells u8 dup_acks; 73457494343SDavid Howells u8 cumulative_acks; 73517926a79SDavid Howells }; 73617926a79SDavid Howells 73748124178SDavid Howells /* 73848124178SDavid Howells * sendmsg() cmsg-specified parameters. 73948124178SDavid Howells */ 74048124178SDavid Howells enum rxrpc_command { 74148124178SDavid Howells RXRPC_CMD_SEND_DATA, /* send data message */ 74248124178SDavid Howells RXRPC_CMD_SEND_ABORT, /* request abort generation */ 74348124178SDavid Howells RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */ 7442d914c1bSDavid Howells RXRPC_CMD_CHARGE_ACCEPT, /* [server] charge accept preallocation */ 74548124178SDavid Howells }; 74648124178SDavid Howells 74748124178SDavid Howells struct rxrpc_call_params { 74848124178SDavid Howells s64 tx_total_len; /* Total Tx data length (if send data) */ 74948124178SDavid Howells unsigned long user_call_ID; /* User's call ID */ 75048124178SDavid Howells struct { 75148124178SDavid Howells u32 hard; /* Maximum lifetime (sec) */ 75248124178SDavid Howells u32 idle; /* Max time since last data packet (msec) */ 75348124178SDavid Howells u32 normal; /* Max time since last call packet (msec) */ 75448124178SDavid Howells } timeouts; 75548124178SDavid Howells u8 nr_timeouts; /* Number of timeouts specified */ 756b7a7d674SDavid Howells bool kernel; /* T if kernel is making the call */ 757e138aa7dSDavid Howells enum rxrpc_interruptibility interruptibility; /* How is interruptible is the call? */ 75848124178SDavid Howells }; 75948124178SDavid Howells 76048124178SDavid Howells struct rxrpc_send_params { 76148124178SDavid Howells struct rxrpc_call_params call; 76248124178SDavid Howells u32 abort_code; /* Abort code to Tx (if abort) */ 76348124178SDavid Howells enum rxrpc_command command : 8; /* The command to implement */ 76448124178SDavid Howells bool exclusive; /* Shared or exclusive call */ 76548124178SDavid Howells bool upgrade; /* If the connection is upgradeable */ 76648124178SDavid Howells }; 76748124178SDavid Howells 76802a19356SDavid Howells /* 76902a19356SDavid Howells * Buffer of data to be output as a packet. 77002a19356SDavid Howells */ 77102a19356SDavid Howells struct rxrpc_txbuf { 77202a19356SDavid Howells struct rcu_head rcu; 773cf37b598SDavid Howells struct list_head call_link; /* Link in call->tx_sendmsg/tx_buffer */ 77402a19356SDavid Howells struct list_head tx_link; /* Link in live Enc queue or Tx queue */ 77502a19356SDavid Howells ktime_t last_sent; /* Time at which last transmitted */ 77602a19356SDavid Howells refcount_t ref; 77702a19356SDavid Howells rxrpc_seq_t seq; /* Sequence number of this packet */ 77802a19356SDavid Howells unsigned int call_debug_id; 77902a19356SDavid Howells unsigned int debug_id; 78002a19356SDavid Howells unsigned int len; /* Amount of data in buffer */ 78102a19356SDavid Howells unsigned int space; /* Remaining data space */ 78202a19356SDavid Howells unsigned int offset; /* Offset of fill point */ 78302a19356SDavid Howells unsigned long flags; 784d57a3a15SDavid Howells #define RXRPC_TXBUF_LAST 0 /* Set if last packet in Tx phase */ 785d57a3a15SDavid Howells #define RXRPC_TXBUF_RESENT 1 /* Set if has been resent */ 78672f0c6fbSDavid Howells u8 /*enum rxrpc_propose_ack_trace*/ ack_why; /* If ack, why */ 78702a19356SDavid Howells struct { 78802a19356SDavid Howells /* The packet for encrypting and DMA'ing. We align it such 78902a19356SDavid Howells * that data[] aligns correctly for any crypto blocksize. 79002a19356SDavid Howells */ 79102a19356SDavid Howells u8 pad[64 - sizeof(struct rxrpc_wire_header)]; 79202a19356SDavid Howells struct rxrpc_wire_header wire; /* Network-ready header */ 79372f0c6fbSDavid Howells union { 79402a19356SDavid Howells u8 data[RXRPC_JUMBO_DATALEN]; /* Data packet */ 79572f0c6fbSDavid Howells struct { 79672f0c6fbSDavid Howells struct rxrpc_ackpacket ack; 79772f0c6fbSDavid Howells u8 acks[0]; 79872f0c6fbSDavid Howells }; 79972f0c6fbSDavid Howells }; 80002a19356SDavid Howells } __aligned(64); 80102a19356SDavid Howells }; 80202a19356SDavid Howells 80302a19356SDavid Howells static inline bool rxrpc_sending_to_server(const struct rxrpc_txbuf *txb) 80402a19356SDavid Howells { 80502a19356SDavid Howells return txb->wire.flags & RXRPC_CLIENT_INITIATED; 80602a19356SDavid Howells } 80702a19356SDavid Howells 80802a19356SDavid Howells static inline bool rxrpc_sending_to_client(const struct rxrpc_txbuf *txb) 80902a19356SDavid Howells { 81002a19356SDavid Howells return !rxrpc_sending_to_server(txb); 81102a19356SDavid Howells } 81202a19356SDavid Howells 813df844fd4SDavid Howells #include <trace/events/rxrpc.h> 814df844fd4SDavid Howells 81517926a79SDavid Howells /* 816651350d1SDavid Howells * af_rxrpc.c 81717926a79SDavid Howells */ 818a4ea4c47SDavid Howells extern atomic_t rxrpc_n_rx_skbs; 819651350d1SDavid Howells extern struct workqueue_struct *rxrpc_workqueue; 82017926a79SDavid Howells 82117926a79SDavid Howells /* 8220d81a51aSDavid Howells * call_accept.c 82317926a79SDavid Howells */ 82400e90712SDavid Howells int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); 82500e90712SDavid Howells void rxrpc_discard_prealloc(struct rxrpc_sock *); 82657af281eSDavid Howells bool rxrpc_new_incoming_call(struct rxrpc_local *local, 82757af281eSDavid Howells struct rxrpc_peer *peer, 82857af281eSDavid Howells struct rxrpc_connection *conn, 82957af281eSDavid Howells struct sockaddr_rxrpc *peer_srx, 83057af281eSDavid Howells struct sk_buff *skb); 8314f95dd78SDavid Howells void rxrpc_accept_incoming_calls(struct rxrpc_local *); 8322d914c1bSDavid Howells int rxrpc_user_charge_accept(struct rxrpc_sock *, unsigned long); 83317926a79SDavid Howells 83417926a79SDavid Howells /* 8350d81a51aSDavid Howells * call_event.c 83617926a79SDavid Howells */ 83772f0c6fbSDavid Howells void rxrpc_propose_ping(struct rxrpc_call *call, u32 serial, 83872f0c6fbSDavid Howells enum rxrpc_propose_ack_trace why); 83972f0c6fbSDavid Howells void rxrpc_send_ACK(struct rxrpc_call *, u8, rxrpc_serial_t, enum rxrpc_propose_ack_trace); 840530403d9SDavid Howells void rxrpc_propose_delay_ACK(struct rxrpc_call *, rxrpc_serial_t, 841530403d9SDavid Howells enum rxrpc_propose_ack_trace); 842a4ea4c47SDavid Howells void rxrpc_shrink_call_tx_buffer(struct rxrpc_call *); 8435e6ef4f1SDavid Howells void rxrpc_resend(struct rxrpc_call *call, struct sk_buff *ack_skb); 84417926a79SDavid Howells 8454a7f62f9SDavid Howells void rxrpc_reduce_call_timer(struct rxrpc_call *call, 846a158bdd3SDavid Howells unsigned long expire_at, 847a158bdd3SDavid Howells unsigned long now, 8484a7f62f9SDavid Howells enum rxrpc_timer_trace why); 8494a7f62f9SDavid Howells 85057af281eSDavid Howells bool rxrpc_input_call_event(struct rxrpc_call *call, struct sk_buff *skb); 8515e6ef4f1SDavid Howells 85217926a79SDavid Howells /* 8530d81a51aSDavid Howells * call_object.c 85417926a79SDavid Howells */ 855f5c17aaeSDavid Howells extern const char *const rxrpc_call_states[]; 856f5c17aaeSDavid Howells extern const char *const rxrpc_call_completions[]; 85717926a79SDavid Howells extern struct kmem_cache *rxrpc_call_jar; 85817926a79SDavid Howells 85915f661dcSDavid Howells void rxrpc_poke_call(struct rxrpc_call *call, enum rxrpc_call_poke_trace what); 8602341e077SDavid Howells struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); 861a25e21f0SDavid Howells struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *, gfp_t, unsigned int); 8622341e077SDavid Howells struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, 86319ffa01cSDavid Howells struct rxrpc_conn_parameters *, 864999b69f8SDavid Howells struct sockaddr_rxrpc *, 865a25e21f0SDavid Howells struct rxrpc_call_params *, gfp_t, 866a25e21f0SDavid Howells unsigned int); 867248f219cSDavid Howells void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, 86842886ffeSDavid Howells struct sk_buff *); 8698d94aa38SDavid Howells void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); 870c1b1203dSJoe Perches void rxrpc_release_calls_on_socket(struct rxrpc_sock *); 871cb0fc0c9SDavid Howells void rxrpc_see_call(struct rxrpc_call *, enum rxrpc_call_trace); 8725e6ef4f1SDavid Howells struct rxrpc_call *rxrpc_try_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 873fff72429SDavid Howells void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 874fff72429SDavid Howells void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); 87500e90712SDavid Howells void rxrpc_cleanup_call(struct rxrpc_call *); 8762baec2c3SDavid Howells void rxrpc_destroy_all_calls(struct rxrpc_net *); 87717926a79SDavid Howells 878dabe5a79SDavid Howells static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) 879dabe5a79SDavid Howells { 880dabe5a79SDavid Howells return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); 881dabe5a79SDavid Howells } 882dabe5a79SDavid Howells 883dabe5a79SDavid Howells static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) 884dabe5a79SDavid Howells { 885dabe5a79SDavid Howells return !rxrpc_is_service_call(call); 886dabe5a79SDavid Howells } 887dabe5a79SDavid Howells 88817926a79SDavid Howells /* 8890b9bb322SDavid Howells * call_state.c 8900b9bb322SDavid Howells */ 8910b9bb322SDavid Howells bool __rxrpc_set_call_completion(struct rxrpc_call *call, 8920b9bb322SDavid Howells enum rxrpc_call_completion compl, 8930b9bb322SDavid Howells u32 abort_code, 8940b9bb322SDavid Howells int error); 8950b9bb322SDavid Howells bool rxrpc_set_call_completion(struct rxrpc_call *call, 8960b9bb322SDavid Howells enum rxrpc_call_completion compl, 8970b9bb322SDavid Howells u32 abort_code, 8980b9bb322SDavid Howells int error); 8990b9bb322SDavid Howells bool __rxrpc_call_completed(struct rxrpc_call *call); 9000b9bb322SDavid Howells bool rxrpc_call_completed(struct rxrpc_call *call); 9010b9bb322SDavid Howells bool __rxrpc_abort_call(struct rxrpc_call *call, rxrpc_seq_t seq, 9020b9bb322SDavid Howells u32 abort_code, int error, enum rxrpc_abort_reason why); 9030b9bb322SDavid Howells bool rxrpc_abort_call(struct rxrpc_call *call, rxrpc_seq_t seq, 9040b9bb322SDavid Howells u32 abort_code, int error, enum rxrpc_abort_reason why); 9050b9bb322SDavid Howells 906*d41b3f5bSDavid Howells static inline enum rxrpc_call_state rxrpc_call_state(const struct rxrpc_call *call) 907*d41b3f5bSDavid Howells { 908*d41b3f5bSDavid Howells /* Order read ->state before read ->error. */ 909*d41b3f5bSDavid Howells return smp_load_acquire(&call->state); 910*d41b3f5bSDavid Howells } 911*d41b3f5bSDavid Howells 912*d41b3f5bSDavid Howells static inline bool rxrpc_call_is_complete(const struct rxrpc_call *call) 913*d41b3f5bSDavid Howells { 914*d41b3f5bSDavid Howells return rxrpc_call_state(call) == RXRPC_CALL_COMPLETE; 915*d41b3f5bSDavid Howells } 916*d41b3f5bSDavid Howells 917*d41b3f5bSDavid Howells static inline bool rxrpc_call_has_failed(const struct rxrpc_call *call) 918*d41b3f5bSDavid Howells { 919*d41b3f5bSDavid Howells return rxrpc_call_is_complete(call) && call->completion != RXRPC_CALL_SUCCEEDED; 920*d41b3f5bSDavid Howells } 921*d41b3f5bSDavid Howells 9220b9bb322SDavid Howells /* 9234a3388c8SDavid Howells * conn_client.c 9244a3388c8SDavid Howells */ 92545025bceSDavid Howells extern unsigned int rxrpc_reap_client_connections; 926a158bdd3SDavid Howells extern unsigned long rxrpc_conn_idle_client_expiry; 927a158bdd3SDavid Howells extern unsigned long rxrpc_conn_idle_client_fast_expiry; 9284a3388c8SDavid Howells 929f06cb291SDavid Howells void rxrpc_destroy_client_conn_ids(struct rxrpc_local *local); 930fa3492abSDavid Howells struct rxrpc_bundle *rxrpc_get_bundle(struct rxrpc_bundle *, enum rxrpc_bundle_trace); 931fa3492abSDavid Howells void rxrpc_put_bundle(struct rxrpc_bundle *, enum rxrpc_bundle_trace); 9321bab27afSDavid Howells int rxrpc_connect_call(struct rxrpc_call *call, gfp_t gfp); 93345025bceSDavid Howells void rxrpc_expose_client_call(struct rxrpc_call *); 934245500d8SDavid Howells void rxrpc_disconnect_client_call(struct rxrpc_bundle *, struct rxrpc_call *); 9351bab27afSDavid Howells void rxrpc_deactivate_bundle(struct rxrpc_bundle *bundle); 9367fa25105SDavid Howells void rxrpc_put_client_conn(struct rxrpc_connection *, enum rxrpc_conn_trace); 9372baec2c3SDavid Howells void rxrpc_discard_expired_client_conns(struct work_struct *); 9382baec2c3SDavid Howells void rxrpc_destroy_all_client_connections(struct rxrpc_net *); 939d12040b6SDavid Howells void rxrpc_clean_up_local_conns(struct rxrpc_local *); 9404a3388c8SDavid Howells 9414a3388c8SDavid Howells /* 9420d81a51aSDavid Howells * conn_event.c 9430d81a51aSDavid Howells */ 94430df927bSDavid Howells void rxrpc_conn_retransmit_call(struct rxrpc_connection *conn, struct sk_buff *skb, 94530df927bSDavid Howells unsigned int channel); 946a00ce28bSDavid Howells int rxrpc_abort_conn(struct rxrpc_connection *conn, struct sk_buff *skb, 94757af281eSDavid Howells s32 abort_code, int err, enum rxrpc_abort_reason why); 9480d81a51aSDavid Howells void rxrpc_process_connection(struct work_struct *); 949ddc7834aSDavid Howells void rxrpc_process_delayed_final_acks(struct rxrpc_connection *, bool); 95057af281eSDavid Howells bool rxrpc_input_conn_packet(struct rxrpc_connection *conn, struct sk_buff *skb); 951f2cce89aSDavid Howells void rxrpc_input_conn_event(struct rxrpc_connection *conn, struct sk_buff *skb); 9520d81a51aSDavid Howells 953a00ce28bSDavid Howells static inline bool rxrpc_is_conn_aborted(const struct rxrpc_connection *conn) 954a00ce28bSDavid Howells { 955a00ce28bSDavid Howells /* Order reading the abort info after the state check. */ 956a00ce28bSDavid Howells return smp_load_acquire(&conn->state) == RXRPC_CONN_ABORTED; 957a00ce28bSDavid Howells } 958a00ce28bSDavid Howells 9590d81a51aSDavid Howells /* 9600d81a51aSDavid Howells * conn_object.c 96117926a79SDavid Howells */ 962dad8aff7SDavid Howells extern unsigned int rxrpc_connection_expiry; 963f859ab61SDavid Howells extern unsigned int rxrpc_closed_conn_expiry; 96417926a79SDavid Howells 965f2cce89aSDavid Howells void rxrpc_poke_conn(struct rxrpc_connection *conn, enum rxrpc_conn_trace why); 9663cec055cSDavid Howells struct rxrpc_connection *rxrpc_alloc_connection(struct rxrpc_net *, gfp_t); 9675e6ef4f1SDavid Howells struct rxrpc_connection *rxrpc_find_client_connection_rcu(struct rxrpc_local *, 968393a2a20SDavid Howells struct sockaddr_rxrpc *, 9695e6ef4f1SDavid Howells struct sk_buff *); 97045025bceSDavid Howells void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); 971999b69f8SDavid Howells void rxrpc_disconnect_call(struct rxrpc_call *); 9723cec055cSDavid Howells void rxrpc_kill_client_conn(struct rxrpc_connection *); 9733cec055cSDavid Howells void rxrpc_queue_conn(struct rxrpc_connection *, enum rxrpc_conn_trace); 9747fa25105SDavid Howells void rxrpc_see_connection(struct rxrpc_connection *, enum rxrpc_conn_trace); 9757fa25105SDavid Howells struct rxrpc_connection *rxrpc_get_connection(struct rxrpc_connection *, 9767fa25105SDavid Howells enum rxrpc_conn_trace); 9777fa25105SDavid Howells struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *, 9787fa25105SDavid Howells enum rxrpc_conn_trace); 9793cec055cSDavid Howells void rxrpc_put_connection(struct rxrpc_connection *, enum rxrpc_conn_trace); 9802baec2c3SDavid Howells void rxrpc_service_connection_reaper(struct work_struct *); 9812baec2c3SDavid Howells void rxrpc_destroy_all_connections(struct rxrpc_net *); 98217926a79SDavid Howells 98319ffa01cSDavid Howells static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) 98419ffa01cSDavid Howells { 98519ffa01cSDavid Howells return conn->out_clientflag; 98619ffa01cSDavid Howells } 98719ffa01cSDavid Howells 98819ffa01cSDavid Howells static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) 98919ffa01cSDavid Howells { 990e8d70ce1SDavid Howells return !rxrpc_conn_is_client(conn); 99119ffa01cSDavid Howells } 99219ffa01cSDavid Howells 9933136ef49SDavid Howells static inline void rxrpc_reduce_conn_timer(struct rxrpc_connection *conn, 9943136ef49SDavid Howells unsigned long expire_at) 9953136ef49SDavid Howells { 9963136ef49SDavid Howells timer_reduce(&conn->timer, expire_at); 9973136ef49SDavid Howells } 9983136ef49SDavid Howells 99917926a79SDavid Howells /* 10007877a4a4SDavid Howells * conn_service.c 10017877a4a4SDavid Howells */ 10028496af50SDavid Howells struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, 10038496af50SDavid Howells struct sk_buff *); 10042baec2c3SDavid Howells struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t); 1005063c60d3SDavid Howells void rxrpc_new_incoming_connection(struct rxrpc_sock *, struct rxrpc_connection *, 1006ec832bd0SDavid Howells const struct rxrpc_security *, struct sk_buff *); 1007001c1122SDavid Howells void rxrpc_unpublish_service_conn(struct rxrpc_connection *); 10087877a4a4SDavid Howells 10097877a4a4SDavid Howells /* 10100d81a51aSDavid Howells * input.c 101117926a79SDavid Howells */ 10125086d9a9SDavid Howells void rxrpc_congestion_degrade(struct rxrpc_call *); 10135e6ef4f1SDavid Howells void rxrpc_input_call_packet(struct rxrpc_call *, struct sk_buff *); 10145e6ef4f1SDavid Howells void rxrpc_implicit_end_call(struct rxrpc_call *, struct sk_buff *); 101596b2d69bSDavid Howells 101696b2d69bSDavid Howells /* 101796b2d69bSDavid Howells * io_thread.c 101896b2d69bSDavid Howells */ 1019446b3e14SDavid Howells int rxrpc_encap_rcv(struct sock *, struct sk_buff *); 1020ff734825SDavid Howells void rxrpc_error_report(struct sock *); 102157af281eSDavid Howells bool rxrpc_direct_abort(struct sk_buff *skb, enum rxrpc_abort_reason why, 102257af281eSDavid Howells s32 abort_code, int err); 1023a275da62SDavid Howells int rxrpc_io_thread(void *data); 1024a275da62SDavid Howells static inline void rxrpc_wake_up_io_thread(struct rxrpc_local *local) 1025a275da62SDavid Howells { 1026a275da62SDavid Howells wake_up_process(local->io_thread); 1027a275da62SDavid Howells } 102817926a79SDavid Howells 102957af281eSDavid Howells static inline bool rxrpc_protocol_error(struct sk_buff *skb, enum rxrpc_abort_reason why) 103057af281eSDavid Howells { 103157af281eSDavid Howells return rxrpc_direct_abort(skb, why, RX_PROTOCOL_ERROR, -EPROTO); 103257af281eSDavid Howells } 103357af281eSDavid Howells 103417926a79SDavid Howells /* 10350d81a51aSDavid Howells * insecure.c 103617926a79SDavid Howells */ 10370d81a51aSDavid Howells extern const struct rxrpc_security rxrpc_no_security; 103817926a79SDavid Howells 103917926a79SDavid Howells /* 10400d81a51aSDavid Howells * key.c 104117926a79SDavid Howells */ 104217926a79SDavid Howells extern struct key_type key_type_rxrpc; 104317926a79SDavid Howells 1044a7b75c5aSChristoph Hellwig int rxrpc_request_key(struct rxrpc_sock *, sockptr_t , int); 104510674a03SBaolin Wang int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t, 1046c1b1203dSJoe Perches u32); 104717926a79SDavid Howells 104817926a79SDavid Howells /* 104987563616SDavid Howells * local_event.c 105087563616SDavid Howells */ 10515e6ef4f1SDavid Howells void rxrpc_send_version_request(struct rxrpc_local *local, 10525e6ef4f1SDavid Howells struct rxrpc_host_header *hdr, 10535e6ef4f1SDavid Howells struct sk_buff *skb); 105487563616SDavid Howells 105587563616SDavid Howells /* 10560d81a51aSDavid Howells * local_object.c 105717926a79SDavid Howells */ 10582baec2c3SDavid Howells struct rxrpc_local *rxrpc_lookup_local(struct net *, const struct sockaddr_rxrpc *); 10590fde882fSDavid Howells struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *, enum rxrpc_local_trace); 10600fde882fSDavid Howells struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *, enum rxrpc_local_trace); 10610fde882fSDavid Howells void rxrpc_put_local(struct rxrpc_local *, enum rxrpc_local_trace); 10620fde882fSDavid Howells struct rxrpc_local *rxrpc_use_local(struct rxrpc_local *, enum rxrpc_local_trace); 10630fde882fSDavid Howells void rxrpc_unuse_local(struct rxrpc_local *, enum rxrpc_local_trace); 1064a275da62SDavid Howells void rxrpc_destroy_local(struct rxrpc_local *local); 10652baec2c3SDavid Howells void rxrpc_destroy_all_locals(struct rxrpc_net *); 1066e0e4d82fSDavid Howells 10670fde882fSDavid Howells static inline bool __rxrpc_use_local(struct rxrpc_local *local, 10680fde882fSDavid Howells enum rxrpc_local_trace why) 106904d36d74SDavid Howells { 10700fde882fSDavid Howells int r, u; 10710fde882fSDavid Howells 10720fde882fSDavid Howells r = refcount_read(&local->ref); 10730fde882fSDavid Howells u = atomic_fetch_add_unless(&local->active_users, 1, 0); 10740fde882fSDavid Howells trace_rxrpc_local(local->debug_id, why, r, u); 10750fde882fSDavid Howells return u != 0; 10760fde882fSDavid Howells } 10770fde882fSDavid Howells 10780fde882fSDavid Howells static inline void rxrpc_see_local(struct rxrpc_local *local, 10790fde882fSDavid Howells enum rxrpc_local_trace why) 10800fde882fSDavid Howells { 10810fde882fSDavid Howells int r, u; 10820fde882fSDavid Howells 10830fde882fSDavid Howells r = refcount_read(&local->ref); 10840fde882fSDavid Howells u = atomic_read(&local->active_users); 10850fde882fSDavid Howells trace_rxrpc_local(local->debug_id, why, r, u); 108604d36d74SDavid Howells } 108704d36d74SDavid Howells 1088e0e4d82fSDavid Howells /* 10898e688d9cSDavid Howells * misc.c 10908e688d9cSDavid Howells */ 10910e119b41SDavid Howells extern unsigned int rxrpc_max_backlog __read_mostly; 1092a158bdd3SDavid Howells extern unsigned long rxrpc_soft_ack_delay; 1093a158bdd3SDavid Howells extern unsigned long rxrpc_idle_ack_delay; 10948e688d9cSDavid Howells extern unsigned int rxrpc_rx_window_size; 10958e688d9cSDavid Howells extern unsigned int rxrpc_rx_mtu; 10968e688d9cSDavid Howells extern unsigned int rxrpc_rx_jumbo_max; 10978e688d9cSDavid Howells 10988e688d9cSDavid Howells /* 10992baec2c3SDavid Howells * net_ns.c 11002baec2c3SDavid Howells */ 11012baec2c3SDavid Howells extern unsigned int rxrpc_net_id; 11022baec2c3SDavid Howells extern struct pernet_operations rxrpc_net_ops; 11032baec2c3SDavid Howells 11042baec2c3SDavid Howells static inline struct rxrpc_net *rxrpc_net(struct net *net) 11052baec2c3SDavid Howells { 11062baec2c3SDavid Howells return net_generic(net, rxrpc_net_id); 11072baec2c3SDavid Howells } 11082baec2c3SDavid Howells 11092baec2c3SDavid Howells /* 11100d81a51aSDavid Howells * output.c 11110d81a51aSDavid Howells */ 1112b0346843SDavid Howells int rxrpc_send_ack_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb); 111326cb02aaSDavid Howells int rxrpc_send_abort_packet(struct rxrpc_call *); 1114a4ea4c47SDavid Howells int rxrpc_send_data_packet(struct rxrpc_call *, struct rxrpc_txbuf *); 1115a00ce28bSDavid Howells void rxrpc_send_conn_abort(struct rxrpc_connection *conn); 11165e6ef4f1SDavid Howells void rxrpc_reject_packet(struct rxrpc_local *local, struct sk_buff *skb); 1117ace45becSDavid Howells void rxrpc_send_keepalive(struct rxrpc_peer *); 1118cf37b598SDavid Howells void rxrpc_transmit_one(struct rxrpc_call *call, struct rxrpc_txbuf *txb); 11190d81a51aSDavid Howells 11200d81a51aSDavid Howells /* 1121abe89ef0SDavid Howells * peer_event.c 11220d81a51aSDavid Howells */ 1123ff734825SDavid Howells void rxrpc_input_error(struct rxrpc_local *, struct sk_buff *); 1124ace45becSDavid Howells void rxrpc_peer_keepalive_worker(struct work_struct *); 11250d81a51aSDavid Howells 11260d81a51aSDavid Howells /* 11270d81a51aSDavid Howells * peer_object.c 11280d81a51aSDavid Howells */ 1129be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, 1130be6e6707SDavid Howells const struct sockaddr_rxrpc *); 11318a758d98SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *local, 11328a758d98SDavid Howells struct sockaddr_rxrpc *srx, gfp_t gfp); 113347c810a7SDavid Howells struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t, 113447c810a7SDavid Howells enum rxrpc_peer_trace); 11358a758d98SDavid Howells void rxrpc_new_incoming_peer(struct rxrpc_local *local, struct rxrpc_peer *peer); 113617226f12SDavid Howells void rxrpc_destroy_all_peers(struct rxrpc_net *); 113747c810a7SDavid Howells struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *, enum rxrpc_peer_trace); 113847c810a7SDavid Howells struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *, enum rxrpc_peer_trace); 113947c810a7SDavid Howells void rxrpc_put_peer(struct rxrpc_peer *, enum rxrpc_peer_trace); 11400d81a51aSDavid Howells 11410d81a51aSDavid Howells /* 11420d81a51aSDavid Howells * proc.c 11430d81a51aSDavid Howells */ 1144c3506372SChristoph Hellwig extern const struct seq_operations rxrpc_call_seq_ops; 1145c3506372SChristoph Hellwig extern const struct seq_operations rxrpc_connection_seq_ops; 1146bc0e7cf4SDavid Howells extern const struct seq_operations rxrpc_peer_seq_ops; 114733912c26SDavid Howells extern const struct seq_operations rxrpc_local_seq_ops; 11480d81a51aSDavid Howells 11490d81a51aSDavid Howells /* 11500d81a51aSDavid Howells * recvmsg.c 11510d81a51aSDavid Howells */ 1152248f219cSDavid Howells void rxrpc_notify_socket(struct rxrpc_call *); 11530d81a51aSDavid Howells int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); 11540d81a51aSDavid Howells 11550d81a51aSDavid Howells /* 11563067bf8cSDavid Howells * Abort a call due to a protocol error. 11573067bf8cSDavid Howells */ 115857af281eSDavid Howells static inline int rxrpc_abort_eproto(struct rxrpc_call *call, 11593067bf8cSDavid Howells struct sk_buff *skb, 116057af281eSDavid Howells s32 abort_code, 116157af281eSDavid Howells enum rxrpc_abort_reason why) 11623067bf8cSDavid Howells { 11633067bf8cSDavid Howells struct rxrpc_skb_priv *sp = rxrpc_skb(skb); 11643067bf8cSDavid Howells 116557af281eSDavid Howells rxrpc_abort_call(call, sp->hdr.seq, abort_code, -EPROTO, why); 116657af281eSDavid Howells return -EPROTO; 11673067bf8cSDavid Howells } 11683067bf8cSDavid Howells 11693067bf8cSDavid Howells /* 1170c410bf01SDavid Howells * rtt.c 1171c410bf01SDavid Howells */ 11724700c4d8SDavid Howells void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, int, 1173c410bf01SDavid Howells rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); 1174c410bf01SDavid Howells unsigned long rxrpc_get_rto_backoff(struct rxrpc_peer *, bool); 1175c410bf01SDavid Howells void rxrpc_peer_init_rtt(struct rxrpc_peer *); 1176c410bf01SDavid Howells 1177c410bf01SDavid Howells /* 1178648af7fcSDavid Howells * rxkad.c 1179648af7fcSDavid Howells */ 1180648af7fcSDavid Howells #ifdef CONFIG_RXKAD 1181648af7fcSDavid Howells extern const struct rxrpc_security rxkad; 1182648af7fcSDavid Howells #endif 1183648af7fcSDavid Howells 1184648af7fcSDavid Howells /* 11850d81a51aSDavid Howells * security.c 11860d81a51aSDavid Howells */ 11870d81a51aSDavid Howells int __init rxrpc_init_security(void); 118812da59fcSDavid Howells const struct rxrpc_security *rxrpc_security_lookup(u8); 11890d81a51aSDavid Howells void rxrpc_exit_security(void); 1190f3441d41SDavid Howells int rxrpc_init_client_call_security(struct rxrpc_call *); 11910d81a51aSDavid Howells int rxrpc_init_client_conn_security(struct rxrpc_connection *); 1192ec832bd0SDavid Howells const struct rxrpc_security *rxrpc_get_incoming_security(struct rxrpc_sock *, 1193063c60d3SDavid Howells struct sk_buff *); 1194ec832bd0SDavid Howells struct key *rxrpc_look_up_server_security(struct rxrpc_connection *, 1195ec832bd0SDavid Howells struct sk_buff *, u32, u32); 11960d81a51aSDavid Howells 11970d81a51aSDavid Howells /* 11980b58b8a1SDavid Howells * sendmsg.c 11990b58b8a1SDavid Howells */ 120057af281eSDavid Howells bool rxrpc_propose_abort(struct rxrpc_call *call, s32 abort_code, int error, 120157af281eSDavid Howells enum rxrpc_abort_reason why); 12020b58b8a1SDavid Howells int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); 12030b58b8a1SDavid Howells 12040b58b8a1SDavid Howells /* 1205ca7fb100SDavid Howells * server_key.c 1206ca7fb100SDavid Howells */ 1207ca7fb100SDavid Howells extern struct key_type key_type_rxrpc_s; 1208ca7fb100SDavid Howells 1209ca7fb100SDavid Howells int rxrpc_server_keyring(struct rxrpc_sock *, sockptr_t, int); 1210ca7fb100SDavid Howells 1211ca7fb100SDavid Howells /* 12120d81a51aSDavid Howells * skbuff.c 12130d81a51aSDavid Howells */ 1214d001648eSDavid Howells void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); 121571f3ca40SDavid Howells void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); 121671f3ca40SDavid Howells void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); 1217d0d5c0cdSDavid Howells void rxrpc_eaten_skb(struct sk_buff *, enum rxrpc_skb_trace); 121871f3ca40SDavid Howells void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); 121971f3ca40SDavid Howells void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); 1220df844fd4SDavid Howells void rxrpc_purge_queue(struct sk_buff_head *); 12210d81a51aSDavid Howells 12220d81a51aSDavid Howells /* 1223b0154246SDavid Howells * stats.c 1224b0154246SDavid Howells */ 1225b0154246SDavid Howells int rxrpc_stats_show(struct seq_file *seq, void *v); 1226b0154246SDavid Howells int rxrpc_stats_clear(struct file *file, char *buf, size_t size); 1227b0154246SDavid Howells 1228b0154246SDavid Howells #define rxrpc_inc_stat(rxnet, s) atomic_inc(&(rxnet)->s) 1229b0154246SDavid Howells #define rxrpc_dec_stat(rxnet, s) atomic_dec(&(rxnet)->s) 1230b0154246SDavid Howells 1231b0154246SDavid Howells /* 12325873c083SDavid Howells * sysctl.c 12335873c083SDavid Howells */ 12345873c083SDavid Howells #ifdef CONFIG_SYSCTL 12355873c083SDavid Howells extern int __init rxrpc_sysctl_init(void); 12365873c083SDavid Howells extern void rxrpc_sysctl_exit(void); 12375873c083SDavid Howells #else 12385873c083SDavid Howells static inline int __init rxrpc_sysctl_init(void) { return 0; } 12395873c083SDavid Howells static inline void rxrpc_sysctl_exit(void) {} 12405873c083SDavid Howells #endif 12415873c083SDavid Howells 12425873c083SDavid Howells /* 124302a19356SDavid Howells * txbuf.c 124402a19356SDavid Howells */ 124502a19356SDavid Howells extern atomic_t rxrpc_nr_txbuf; 124602a19356SDavid Howells struct rxrpc_txbuf *rxrpc_alloc_txbuf(struct rxrpc_call *call, u8 packet_type, 124702a19356SDavid Howells gfp_t gfp); 124802a19356SDavid Howells void rxrpc_get_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what); 124902a19356SDavid Howells void rxrpc_see_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what); 125002a19356SDavid Howells void rxrpc_put_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what); 125102a19356SDavid Howells 125202a19356SDavid Howells /* 1253be6e6707SDavid Howells * utils.c 1254be6e6707SDavid Howells */ 12555a790b73SDavid Howells int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 1256be6e6707SDavid Howells 1257248f219cSDavid Howells static inline bool before(u32 seq1, u32 seq2) 1258248f219cSDavid Howells { 1259248f219cSDavid Howells return (s32)(seq1 - seq2) < 0; 1260248f219cSDavid Howells } 1261248f219cSDavid Howells static inline bool before_eq(u32 seq1, u32 seq2) 1262248f219cSDavid Howells { 1263248f219cSDavid Howells return (s32)(seq1 - seq2) <= 0; 1264248f219cSDavid Howells } 1265248f219cSDavid Howells static inline bool after(u32 seq1, u32 seq2) 1266248f219cSDavid Howells { 1267248f219cSDavid Howells return (s32)(seq1 - seq2) > 0; 1268248f219cSDavid Howells } 1269248f219cSDavid Howells static inline bool after_eq(u32 seq1, u32 seq2) 1270248f219cSDavid Howells { 1271248f219cSDavid Howells return (s32)(seq1 - seq2) >= 0; 1272248f219cSDavid Howells } 1273248f219cSDavid Howells 1274be6e6707SDavid Howells /* 127517926a79SDavid Howells * debug tracing 127617926a79SDavid Howells */ 127795c96174SEric Dumazet extern unsigned int rxrpc_debug; 127817926a79SDavid Howells 127917926a79SDavid Howells #define dbgprintk(FMT,...) \ 12809f389f4bSSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 128117926a79SDavid Howells 12820dc47877SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 12830dc47877SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 128417926a79SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 128517926a79SDavid Howells 128617926a79SDavid Howells 128717926a79SDavid Howells #if defined(__KDEBUG) 128817926a79SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 128917926a79SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 129017926a79SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 129117926a79SDavid Howells 129217926a79SDavid Howells #elif defined(CONFIG_AF_RXRPC_DEBUG) 129317926a79SDavid Howells #define RXRPC_DEBUG_KENTER 0x01 129417926a79SDavid Howells #define RXRPC_DEBUG_KLEAVE 0x02 129517926a79SDavid Howells #define RXRPC_DEBUG_KDEBUG 0x04 129617926a79SDavid Howells 129717926a79SDavid Howells #define _enter(FMT,...) \ 129817926a79SDavid Howells do { \ 129917926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ 130017926a79SDavid Howells kenter(FMT,##__VA_ARGS__); \ 130117926a79SDavid Howells } while (0) 130217926a79SDavid Howells 130317926a79SDavid Howells #define _leave(FMT,...) \ 130417926a79SDavid Howells do { \ 130517926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ 130617926a79SDavid Howells kleave(FMT,##__VA_ARGS__); \ 130717926a79SDavid Howells } while (0) 130817926a79SDavid Howells 130917926a79SDavid Howells #define _debug(FMT,...) \ 131017926a79SDavid Howells do { \ 131117926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ 131217926a79SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 131317926a79SDavid Howells } while (0) 131417926a79SDavid Howells 131517926a79SDavid Howells #else 131612fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 131712fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 131812fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 131917926a79SDavid Howells #endif 132017926a79SDavid Howells 132117926a79SDavid Howells /* 132217926a79SDavid Howells * debug assertion checking 132317926a79SDavid Howells */ 132417926a79SDavid Howells #if 1 // defined(__KDEBUGALL) 132517926a79SDavid Howells 132617926a79SDavid Howells #define ASSERT(X) \ 132717926a79SDavid Howells do { \ 132817926a79SDavid Howells if (unlikely(!(X))) { \ 13299b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 133017926a79SDavid Howells BUG(); \ 133117926a79SDavid Howells } \ 133217926a79SDavid Howells } while (0) 133317926a79SDavid Howells 133417926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 133517926a79SDavid Howells do { \ 1336cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1337cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 13389b6d5398SJoe Perches if (unlikely(!(_x OP _y))) { \ 13399b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1340cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1341cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 134217926a79SDavid Howells BUG(); \ 134317926a79SDavid Howells } \ 134417926a79SDavid Howells } while (0) 134517926a79SDavid Howells 134617926a79SDavid Howells #define ASSERTIF(C, X) \ 134717926a79SDavid Howells do { \ 134817926a79SDavid Howells if (unlikely((C) && !(X))) { \ 13499b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 135017926a79SDavid Howells BUG(); \ 135117926a79SDavid Howells } \ 135217926a79SDavid Howells } while (0) 135317926a79SDavid Howells 135417926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 135517926a79SDavid Howells do { \ 1356cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1357cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 13589b6d5398SJoe Perches if (unlikely((C) && !(_x OP _y))) { \ 13599b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1360cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1361cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 136217926a79SDavid Howells BUG(); \ 136317926a79SDavid Howells } \ 136417926a79SDavid Howells } while (0) 136517926a79SDavid Howells 136617926a79SDavid Howells #else 136717926a79SDavid Howells 136817926a79SDavid Howells #define ASSERT(X) \ 136917926a79SDavid Howells do { \ 137017926a79SDavid Howells } while (0) 137117926a79SDavid Howells 137217926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 137317926a79SDavid Howells do { \ 137417926a79SDavid Howells } while (0) 137517926a79SDavid Howells 137617926a79SDavid Howells #define ASSERTIF(C, X) \ 137717926a79SDavid Howells do { \ 137817926a79SDavid Howells } while (0) 137917926a79SDavid Howells 138017926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 138117926a79SDavid Howells do { \ 138217926a79SDavid Howells } while (0) 138317926a79SDavid Howells 138417926a79SDavid Howells #endif /* __KDEBUGALL */ 1385