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 atomic_t nr_client_conns; 802baec2c3SDavid Howells 8133912c26SDavid Howells struct hlist_head local_endpoints; 822baec2c3SDavid Howells struct mutex local_mutex; /* Lock for ->local_endpoints */ 832baec2c3SDavid Howells 842baec2c3SDavid Howells DECLARE_HASHTABLE (peer_hash, 10); 85ace45becSDavid Howells spinlock_t peer_hash_lock; /* Lock for ->peer_hash */ 86ace45becSDavid Howells 87ace45becSDavid Howells #define RXRPC_KEEPALIVE_TIME 20 /* NAT keepalive time in seconds */ 88ace45becSDavid Howells u8 peer_keepalive_cursor; 89330bdcfaSDavid Howells time64_t peer_keepalive_base; 90330bdcfaSDavid Howells struct list_head peer_keepalive[32]; 91330bdcfaSDavid Howells struct list_head peer_keepalive_new; 92ace45becSDavid Howells struct timer_list peer_keepalive_timer; 93ace45becSDavid Howells struct work_struct peer_keepalive_work; 94b0154246SDavid Howells 95b0154246SDavid Howells atomic_t stat_tx_data; 96b0154246SDavid Howells atomic_t stat_tx_data_retrans; 97b0154246SDavid Howells atomic_t stat_tx_data_send; 98b0154246SDavid Howells atomic_t stat_tx_data_send_frag; 9932cf8edbSDavid Howells atomic_t stat_tx_data_send_fail; 10032cf8edbSDavid Howells atomic_t stat_tx_data_underflow; 10132cf8edbSDavid Howells atomic_t stat_tx_data_cwnd_reset; 102b0154246SDavid Howells atomic_t stat_rx_data; 103b0154246SDavid Howells atomic_t stat_rx_data_reqack; 104b0154246SDavid Howells atomic_t stat_rx_data_jumbo; 105f2a676d1SDavid Howells 106f2a676d1SDavid Howells atomic_t stat_tx_ack_fill; 107f2a676d1SDavid Howells atomic_t stat_tx_ack_send; 108f2a676d1SDavid Howells atomic_t stat_tx_ack_skip; 109f2a676d1SDavid Howells atomic_t stat_tx_acks[256]; 110f2a676d1SDavid Howells atomic_t stat_rx_acks[256]; 111f7fa5242SDavid Howells 112f7fa5242SDavid Howells atomic_t stat_why_req_ack[8]; 113a275da62SDavid Howells 114a275da62SDavid Howells atomic_t stat_io_loop; 1152baec2c3SDavid Howells }; 1162baec2c3SDavid Howells 1172baec2c3SDavid Howells /* 11800e90712SDavid Howells * Service backlog preallocation. 11900e90712SDavid Howells * 12000e90712SDavid Howells * This contains circular buffers of preallocated peers, connections and calls 12100e90712SDavid Howells * for incoming service calls and their head and tail pointers. This allows 12200e90712SDavid Howells * calls to be set up in the data_ready handler, thereby avoiding the need to 12300e90712SDavid Howells * shuffle packets around so much. 12400e90712SDavid Howells */ 12500e90712SDavid Howells struct rxrpc_backlog { 12600e90712SDavid Howells unsigned short peer_backlog_head; 12700e90712SDavid Howells unsigned short peer_backlog_tail; 12800e90712SDavid Howells unsigned short conn_backlog_head; 12900e90712SDavid Howells unsigned short conn_backlog_tail; 13000e90712SDavid Howells unsigned short call_backlog_head; 13100e90712SDavid Howells unsigned short call_backlog_tail; 13200e90712SDavid Howells #define RXRPC_BACKLOG_MAX 32 13300e90712SDavid Howells struct rxrpc_peer *peer_backlog[RXRPC_BACKLOG_MAX]; 13400e90712SDavid Howells struct rxrpc_connection *conn_backlog[RXRPC_BACKLOG_MAX]; 13500e90712SDavid Howells struct rxrpc_call *call_backlog[RXRPC_BACKLOG_MAX]; 13600e90712SDavid Howells }; 13700e90712SDavid Howells 13800e90712SDavid Howells /* 13917926a79SDavid Howells * RxRPC socket definition 14017926a79SDavid Howells */ 14117926a79SDavid Howells struct rxrpc_sock { 14217926a79SDavid Howells /* WARNING: sk has to be the first member */ 14317926a79SDavid Howells struct sock sk; 144d001648eSDavid Howells rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */ 14500e90712SDavid Howells rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */ 14617926a79SDavid Howells struct rxrpc_local *local; /* local endpoint */ 14700e90712SDavid Howells struct rxrpc_backlog *backlog; /* Preallocation for services */ 148248f219cSDavid Howells spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */ 149248f219cSDavid Howells struct list_head sock_calls; /* List of calls owned by this socket */ 150248f219cSDavid Howells struct list_head to_be_accepted; /* calls awaiting acceptance */ 151248f219cSDavid Howells struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */ 152223f5901SDavid Howells spinlock_t recvmsg_lock; /* Lock for recvmsg_q */ 15317926a79SDavid Howells struct key *key; /* security for this socket */ 15417926a79SDavid Howells struct key *securities; /* list of server security descriptors */ 15500e90712SDavid Howells struct rb_root calls; /* User ID -> call mapping */ 15617926a79SDavid Howells unsigned long flags; 1572341e077SDavid Howells #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ 15817926a79SDavid Howells rwlock_t call_lock; /* lock for calls */ 15917926a79SDavid Howells u32 min_sec_level; /* minimum security level */ 16017926a79SDavid Howells #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT 161cc8feb8eSDavid Howells bool exclusive; /* Exclusive connection for a client socket */ 16228036f44SDavid Howells u16 second_service; /* Additional service bound to the endpoint */ 1634722974dSDavid Howells struct { 1644722974dSDavid Howells /* Service upgrade information */ 1654722974dSDavid Howells u16 from; /* Service ID to upgrade (if not 0) */ 1664722974dSDavid Howells u16 to; /* service ID to upgrade to */ 1674722974dSDavid Howells } service_upgrade; 168cc8feb8eSDavid Howells sa_family_t family; /* Protocol family created with */ 1694722974dSDavid Howells struct sockaddr_rxrpc srx; /* Primary Service/local addresses */ 1702341e077SDavid Howells struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ 17117926a79SDavid Howells }; 17217926a79SDavid Howells 17317926a79SDavid Howells #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) 17417926a79SDavid Howells 17517926a79SDavid Howells /* 1760d12f8a4SDavid Howells * CPU-byteorder normalised Rx packet header. 1770d12f8a4SDavid Howells */ 1780d12f8a4SDavid Howells struct rxrpc_host_header { 1790d12f8a4SDavid Howells u32 epoch; /* client boot timestamp */ 1800d12f8a4SDavid Howells u32 cid; /* connection and channel ID */ 1810d12f8a4SDavid Howells u32 callNumber; /* call ID (0 for connection-level packets) */ 1820d12f8a4SDavid Howells u32 seq; /* sequence number of pkt in call stream */ 1830d12f8a4SDavid Howells u32 serial; /* serial number of pkt sent to network */ 1840d12f8a4SDavid Howells u8 type; /* packet type */ 1850d12f8a4SDavid Howells u8 flags; /* packet flags */ 1860d12f8a4SDavid Howells u8 userStatus; /* app-layer defined status */ 1870d12f8a4SDavid Howells u8 securityIndex; /* security protocol ID */ 1880d12f8a4SDavid Howells union { 1890d12f8a4SDavid Howells u16 _rsvd; /* reserved */ 1900d12f8a4SDavid Howells u16 cksum; /* kerberos security checksum */ 1910d12f8a4SDavid Howells }; 1920d12f8a4SDavid Howells u16 serviceId; /* service ID */ 1930d12f8a4SDavid Howells } __packed; 1940d12f8a4SDavid Howells 1950d12f8a4SDavid Howells /* 19617926a79SDavid Howells * RxRPC socket buffer private variables 19717926a79SDavid Howells * - max 48 bytes (struct sk_buff::cb) 19817926a79SDavid Howells */ 19917926a79SDavid Howells struct rxrpc_skb_priv { 200f2cce89aSDavid Howells struct rxrpc_connection *conn; /* Connection referred to (poke packet) */ 201d4d02d8bSDavid Howells u16 offset; /* Offset of data */ 202d4d02d8bSDavid Howells u16 len; /* Length of data */ 203d4d02d8bSDavid Howells u8 flags; 204d4d02d8bSDavid Howells #define RXRPC_RX_VERIFIED 0x01 20517926a79SDavid Howells 2060d12f8a4SDavid Howells struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ 20717926a79SDavid Howells }; 20817926a79SDavid Howells 20917926a79SDavid Howells #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) 21017926a79SDavid Howells 21117926a79SDavid Howells /* 21217926a79SDavid Howells * RxRPC security module interface 21317926a79SDavid Howells */ 21417926a79SDavid Howells struct rxrpc_security { 21517926a79SDavid Howells const char *name; /* name of this service */ 21617926a79SDavid Howells u8 security_index; /* security type provided */ 217063c60d3SDavid Howells u32 no_key_abort; /* Abort code indicating no key */ 21817926a79SDavid Howells 219648af7fcSDavid Howells /* Initialise a security service */ 220648af7fcSDavid Howells int (*init)(void); 221648af7fcSDavid Howells 222648af7fcSDavid Howells /* Clean up a security service */ 223648af7fcSDavid Howells void (*exit)(void); 224648af7fcSDavid Howells 22512da59fcSDavid Howells /* Parse the information from a server key */ 22612da59fcSDavid Howells int (*preparse_server_key)(struct key_preparsed_payload *); 22712da59fcSDavid Howells 22812da59fcSDavid Howells /* Clean up the preparse buffer after parsing a server key */ 22912da59fcSDavid Howells void (*free_preparse_server_key)(struct key_preparsed_payload *); 23012da59fcSDavid Howells 23112da59fcSDavid Howells /* Destroy the payload of a server key */ 23212da59fcSDavid Howells void (*destroy_server_key)(struct key *); 23312da59fcSDavid Howells 234d5953f65SDavid Howells /* Describe a server key */ 235d5953f65SDavid Howells void (*describe_server_key)(const struct key *, struct seq_file *); 236d5953f65SDavid Howells 23717926a79SDavid Howells /* initialise a connection's security */ 23841057ebdSDavid Howells int (*init_connection_security)(struct rxrpc_connection *, 23941057ebdSDavid Howells struct rxrpc_key_token *); 24017926a79SDavid Howells 241d7d775b1SDavid Howells /* Work out how much data we can store in a packet, given an estimate 242d7d775b1SDavid Howells * of the amount of data remaining. 243d7d775b1SDavid Howells */ 244d7d775b1SDavid Howells int (*how_much_data)(struct rxrpc_call *, size_t, 245d7d775b1SDavid Howells size_t *, size_t *, size_t *); 24617926a79SDavid Howells 24717926a79SDavid Howells /* impose security on a packet */ 248a4ea4c47SDavid Howells int (*secure_packet)(struct rxrpc_call *, struct rxrpc_txbuf *); 24917926a79SDavid Howells 25017926a79SDavid Howells /* verify the security on a received packet */ 251d4d02d8bSDavid Howells int (*verify_packet)(struct rxrpc_call *, struct sk_buff *); 252248f219cSDavid Howells 2531db88c53SDavid Howells /* Free crypto request on a call */ 2541db88c53SDavid Howells void (*free_call_crypto)(struct rxrpc_call *); 2551db88c53SDavid Howells 25617926a79SDavid Howells /* issue a challenge */ 25717926a79SDavid Howells int (*issue_challenge)(struct rxrpc_connection *); 25817926a79SDavid Howells 25917926a79SDavid Howells /* respond to a challenge */ 26017926a79SDavid Howells int (*respond_to_challenge)(struct rxrpc_connection *, 261a00ce28bSDavid Howells struct sk_buff *); 26217926a79SDavid Howells 26317926a79SDavid Howells /* verify a response */ 26417926a79SDavid Howells int (*verify_response)(struct rxrpc_connection *, 265a00ce28bSDavid Howells struct sk_buff *); 26617926a79SDavid Howells 26717926a79SDavid Howells /* clear connection security */ 26817926a79SDavid Howells void (*clear)(struct rxrpc_connection *); 26917926a79SDavid Howells }; 27017926a79SDavid Howells 27117926a79SDavid Howells /* 2724f95dd78SDavid Howells * RxRPC local transport endpoint description 2734f95dd78SDavid Howells * - owned by a single AF_RXRPC socket 2744f95dd78SDavid Howells * - pointed to by transport socket struct sk_user_data 27517926a79SDavid Howells */ 27617926a79SDavid Howells struct rxrpc_local { 2774f95dd78SDavid Howells struct rcu_head rcu; 278730c5fd4SDavid Howells atomic_t active_users; /* Number of users of the local endpoint */ 279a0575429SDavid Howells refcount_t ref; /* Number of references to the structure */ 2808a758d98SDavid Howells struct net *net; /* The network namespace */ 2818a758d98SDavid Howells struct rxrpc_net *rxnet; /* Our bits in the network namespace */ 28233912c26SDavid Howells struct hlist_node link; 28317926a79SDavid Howells struct socket *socket; /* my UDP socket */ 284a275da62SDavid Howells struct task_struct *io_thread; 2858fbcc833SDavid Howells struct completion io_thread_ready; /* Indication that the I/O thread started */ 28642f229c3SDavid Howells struct rxrpc_sock *service; /* Service(s) listening on this endpoint */ 28717926a79SDavid Howells struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ 288*af094824SDavid Howells #ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY 289*af094824SDavid Howells struct sk_buff_head rx_delay_queue; /* Delay injection queue */ 290*af094824SDavid Howells #endif 291a275da62SDavid Howells struct sk_buff_head rx_queue; /* Received packets */ 292f2cce89aSDavid Howells struct list_head conn_attend_q; /* Conns requiring immediate attention */ 29315f661dcSDavid Howells struct list_head call_attend_q; /* Calls requiring immediate attention */ 2940d6bf319SDavid Howells 295245500d8SDavid Howells struct rb_root client_bundles; /* Client connection bundles by socket params */ 296245500d8SDavid Howells spinlock_t client_bundles_lock; /* Lock for client_bundles */ 2970d6bf319SDavid Howells bool kill_all_client_conns; 2980d6bf319SDavid Howells struct list_head idle_client_conns; 2990d6bf319SDavid Howells struct timer_list client_conn_reap_timer; 3000d6bf319SDavid Howells unsigned long client_conn_flags; 3010d6bf319SDavid Howells #define RXRPC_CLIENT_CONN_REAP_TIMER 0 /* The client conn reap timer expired */ 3020d6bf319SDavid Howells 30317926a79SDavid Howells spinlock_t lock; /* access lock */ 30417926a79SDavid Howells rwlock_t services_lock; /* lock for services list */ 30517926a79SDavid Howells int debug_id; /* debug ID for printks */ 3064f95dd78SDavid Howells bool dead; 307f859ab61SDavid Howells bool service_closed; /* Service socket closed */ 308f06cb291SDavid Howells struct idr conn_ids; /* List of connection IDs */ 3099d35d880SDavid Howells struct list_head new_client_calls; /* Newly created client calls need connection */ 3109d35d880SDavid Howells spinlock_t client_call_lock; /* Lock for ->new_client_calls */ 31117926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 31217926a79SDavid Howells }; 31317926a79SDavid Howells 31417926a79SDavid Howells /* 31517926a79SDavid Howells * RxRPC remote transport endpoint definition 316be6e6707SDavid Howells * - matched by local endpoint, remote port, address and protocol type 31717926a79SDavid Howells */ 31817926a79SDavid Howells struct rxrpc_peer { 319be6e6707SDavid Howells struct rcu_head rcu; /* This must be first */ 320a0575429SDavid Howells refcount_t ref; 321be6e6707SDavid Howells unsigned long hash_key; 322be6e6707SDavid Howells struct hlist_node hash_link; 323be6e6707SDavid Howells struct rxrpc_local *local; 324f66d7490SDavid Howells struct hlist_head error_targets; /* targets for net error distribution */ 325aa390bbeSDavid Howells struct rb_root service_conns; /* Service connections */ 326330bdcfaSDavid Howells struct list_head keepalive_link; /* Link in net->peer_keepalive[] */ 327ace45becSDavid Howells time64_t last_tx_at; /* Last time packet sent here */ 3288496af50SDavid Howells seqlock_t service_conn_lock; 32917926a79SDavid Howells spinlock_t lock; /* access lock */ 33095c96174SEric Dumazet unsigned int if_mtu; /* interface MTU for this peer */ 33195c96174SEric Dumazet unsigned int mtu; /* network MTU for this peer */ 33295c96174SEric Dumazet unsigned int maxdata; /* data size (MTU - hdrsize) */ 33317926a79SDavid Howells unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ 33417926a79SDavid Howells int debug_id; /* debug ID for printks */ 33517926a79SDavid Howells struct sockaddr_rxrpc srx; /* remote address */ 33617926a79SDavid Howells 33717926a79SDavid Howells /* calculated RTT cache */ 33817926a79SDavid Howells #define RXRPC_RTT_CACHE_SIZE 32 339c1e15b49SDavid Howells spinlock_t rtt_input_lock; /* RTT lock for input routine */ 3400d4b103cSDavid Howells ktime_t rtt_last_req; /* Time of last RTT request */ 341c410bf01SDavid Howells unsigned int rtt_count; /* Number of samples we've got */ 342c410bf01SDavid Howells 343c410bf01SDavid Howells u32 srtt_us; /* smoothed round trip time << 3 in usecs */ 344c410bf01SDavid Howells u32 mdev_us; /* medium deviation */ 345c410bf01SDavid Howells u32 mdev_max_us; /* maximal mdev for the last rtt period */ 346c410bf01SDavid Howells u32 rttvar_us; /* smoothed mdev_max */ 347c410bf01SDavid Howells u32 rto_j; /* Retransmission timeout in jiffies */ 348c410bf01SDavid Howells u8 backoff; /* Backoff timeout */ 349f7aec129SDavid Howells 3501fc4fa2aSDavid Howells u8 cong_ssthresh; /* Congestion slow-start threshold */ 35117926a79SDavid Howells }; 35217926a79SDavid Howells 35317926a79SDavid Howells /* 35419ffa01cSDavid Howells * Keys for matching a connection. 35519ffa01cSDavid Howells */ 35619ffa01cSDavid Howells struct rxrpc_conn_proto { 357e8d70ce1SDavid Howells union { 358e8d70ce1SDavid Howells struct { 35919ffa01cSDavid Howells u32 epoch; /* epoch of this connection */ 36019ffa01cSDavid Howells u32 cid; /* connection ID */ 361e8d70ce1SDavid Howells }; 362e8d70ce1SDavid Howells u64 index_key; 36319ffa01cSDavid Howells }; 36419ffa01cSDavid Howells }; 36519ffa01cSDavid Howells 36619ffa01cSDavid Howells struct rxrpc_conn_parameters { 36719ffa01cSDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 36819ffa01cSDavid Howells struct key *key; /* Security details */ 36919ffa01cSDavid Howells bool exclusive; /* T if conn is exclusive */ 3704e255721SDavid Howells bool upgrade; /* T if service ID can be upgraded */ 37119ffa01cSDavid Howells u16 service_id; /* Service ID for this connection */ 37219ffa01cSDavid Howells u32 security_level; /* Security level selected */ 37319ffa01cSDavid Howells }; 37419ffa01cSDavid Howells 37519ffa01cSDavid Howells /* 376a00ce28bSDavid Howells * Call completion condition (state == RXRPC_CALL_COMPLETE). 377a00ce28bSDavid Howells */ 378a00ce28bSDavid Howells enum rxrpc_call_completion { 379a00ce28bSDavid Howells RXRPC_CALL_SUCCEEDED, /* - Normal termination */ 380a00ce28bSDavid Howells RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ 381a00ce28bSDavid Howells RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ 382a00ce28bSDavid Howells RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */ 383a00ce28bSDavid Howells RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ 384a00ce28bSDavid Howells NR__RXRPC_CALL_COMPLETIONS 385a00ce28bSDavid Howells }; 386a00ce28bSDavid Howells 387a00ce28bSDavid Howells /* 388bba304dbSDavid Howells * Bits in the connection flags. 389bba304dbSDavid Howells */ 390bba304dbSDavid Howells enum rxrpc_conn_flag { 391001c1122SDavid Howells RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ 39245025bceSDavid Howells RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ 3934e255721SDavid Howells RXRPC_CONN_PROBING_FOR_UPGRADE, /* Probing for service upgrade */ 3943136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_0, /* Need final ACK for channel 0 */ 3953136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_1, /* Need final ACK for channel 1 */ 3963136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_2, /* Need final ACK for channel 2 */ 3973136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_3, /* Need final ACK for channel 3 */ 398bba304dbSDavid Howells }; 399bba304dbSDavid Howells 4003136ef49SDavid Howells #define RXRPC_CONN_FINAL_ACK_MASK ((1UL << RXRPC_CONN_FINAL_ACK_0) | \ 4013136ef49SDavid Howells (1UL << RXRPC_CONN_FINAL_ACK_1) | \ 4023136ef49SDavid Howells (1UL << RXRPC_CONN_FINAL_ACK_2) | \ 4033136ef49SDavid Howells (1UL << RXRPC_CONN_FINAL_ACK_3)) 4043136ef49SDavid Howells 405bba304dbSDavid Howells /* 406bba304dbSDavid Howells * Events that can be raised upon a connection. 407bba304dbSDavid Howells */ 408bba304dbSDavid Howells enum rxrpc_conn_event { 409bba304dbSDavid Howells RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ 410a00ce28bSDavid Howells RXRPC_CONN_EV_ABORT_CALLS, /* Abort attached calls */ 411bba304dbSDavid Howells }; 412bba304dbSDavid Howells 413bba304dbSDavid Howells /* 414bba304dbSDavid Howells * The connection protocol state. 415bba304dbSDavid Howells */ 416bba304dbSDavid Howells enum rxrpc_conn_proto_state { 417bba304dbSDavid Howells RXRPC_CONN_UNUSED, /* Connection not yet attempted */ 4189d35d880SDavid Howells RXRPC_CONN_CLIENT_UNSECURED, /* Client connection needs security init */ 419bba304dbSDavid Howells RXRPC_CONN_CLIENT, /* Client connection */ 42000e90712SDavid Howells RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ 421bba304dbSDavid Howells RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ 422bba304dbSDavid Howells RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ 423bba304dbSDavid Howells RXRPC_CONN_SERVICE, /* Service secured connection */ 424a00ce28bSDavid Howells RXRPC_CONN_ABORTED, /* Conn aborted */ 425bba304dbSDavid Howells RXRPC_CONN__NR_STATES 426bba304dbSDavid Howells }; 427bba304dbSDavid Howells 428bba304dbSDavid Howells /* 429245500d8SDavid Howells * RxRPC client connection bundle. 430245500d8SDavid Howells */ 431245500d8SDavid Howells struct rxrpc_bundle { 4322cc80086SDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 4332cc80086SDavid Howells struct rxrpc_peer *peer; /* Remote endpoint */ 4342cc80086SDavid Howells struct key *key; /* Security details */ 4351bab27afSDavid Howells const struct rxrpc_security *security; /* applied security module */ 436a0575429SDavid Howells refcount_t ref; 4373bcd6c7eSDavid Howells atomic_t active; /* Number of active users */ 438245500d8SDavid Howells unsigned int debug_id; 4392cc80086SDavid Howells u32 security_level; /* Security level selected */ 4402cc80086SDavid Howells u16 service_id; /* Service ID for this connection */ 441245500d8SDavid Howells bool try_upgrade; /* True if the bundle is attempting upgrade */ 4422cc80086SDavid Howells bool exclusive; /* T if conn is exclusive */ 4432cc80086SDavid Howells bool upgrade; /* T if service ID can be upgraded */ 4449d35d880SDavid Howells unsigned short alloc_error; /* Error from last conn allocation */ 445245500d8SDavid Howells struct rb_node local_node; /* Node in local->client_conns */ 446245500d8SDavid Howells struct list_head waiting_calls; /* Calls waiting for channels */ 447245500d8SDavid Howells unsigned long avail_chans; /* Mask of available channels */ 448245500d8SDavid Howells struct rxrpc_connection *conns[4]; /* The connections in the bundle (max 4) */ 449245500d8SDavid Howells }; 450245500d8SDavid Howells 451245500d8SDavid Howells /* 45217926a79SDavid Howells * RxRPC connection definition 453aa390bbeSDavid Howells * - matched by { local, peer, epoch, conn_id, direction } 45417926a79SDavid Howells * - each connection can only handle four simultaneous calls 45517926a79SDavid Howells */ 45617926a79SDavid Howells struct rxrpc_connection { 45719ffa01cSDavid Howells struct rxrpc_conn_proto proto; 4582cc80086SDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 4592cc80086SDavid Howells struct rxrpc_peer *peer; /* Remote endpoint */ 4603cec055cSDavid Howells struct rxrpc_net *rxnet; /* Network namespace to which call belongs */ 4612cc80086SDavid Howells struct key *key; /* Security details */ 462f2cce89aSDavid Howells struct list_head attend_link; /* Link in local->conn_attend_q */ 46319ffa01cSDavid Howells 464a0575429SDavid Howells refcount_t ref; 4653cec055cSDavid Howells atomic_t active; /* Active count for service conns */ 46645025bceSDavid Howells struct rcu_head rcu; 46745025bceSDavid Howells struct list_head cache_link; 468a1399f8bSDavid Howells 469245500d8SDavid Howells unsigned char act_chans; /* Mask of active channels */ 470a1399f8bSDavid Howells struct rxrpc_channel { 4713136ef49SDavid Howells unsigned long final_ack_at; /* Time at which to issue final ACK */ 4729d35d880SDavid Howells struct rxrpc_call *call; /* Active call */ 4734764c0daSDavid Howells unsigned int call_debug_id; /* call->debug_id */ 474a1399f8bSDavid Howells u32 call_id; /* ID of current call */ 475a1399f8bSDavid Howells u32 call_counter; /* Call ID counter */ 476a1399f8bSDavid Howells u32 last_call; /* ID of last call */ 47718bfeba5SDavid Howells u8 last_type; /* Type of last packet */ 47818bfeba5SDavid Howells union { 47918bfeba5SDavid Howells u32 last_seq; 48018bfeba5SDavid Howells u32 last_abort; 48118bfeba5SDavid Howells }; 482a1399f8bSDavid Howells } channels[RXRPC_MAXCALLS]; 483999b69f8SDavid Howells 4843136ef49SDavid Howells struct timer_list timer; /* Conn event timer */ 48517926a79SDavid Howells struct work_struct processor; /* connection event processor */ 4863cec055cSDavid Howells struct work_struct destructor; /* In-process-context destroyer */ 487245500d8SDavid Howells struct rxrpc_bundle *bundle; /* Client connection bundle */ 488aa390bbeSDavid Howells struct rb_node service_node; /* Node in peer->service_conns */ 4894d028b2cSDavid Howells struct list_head proc_link; /* link in procfs list */ 49017926a79SDavid Howells struct list_head link; /* link in master connection list */ 49117926a79SDavid Howells struct sk_buff_head rx_queue; /* received conn-level packets */ 492521bb304SDavid Howells 4939d35d880SDavid Howells struct mutex security_lock; /* Lock for security management */ 494648af7fcSDavid Howells const struct rxrpc_security *security; /* applied security module */ 495521bb304SDavid Howells union { 496521bb304SDavid Howells struct { 49769d826faSKees Cook struct crypto_sync_skcipher *cipher; /* encryption handle */ 49817926a79SDavid Howells struct rxrpc_crypt csum_iv; /* packet checksum base */ 499521bb304SDavid Howells u32 nonce; /* response re-use preventer */ 500521bb304SDavid Howells } rxkad; 501521bb304SDavid Howells }; 5024a3388c8SDavid Howells unsigned long flags; 50317926a79SDavid Howells unsigned long events; 504f51b4480SDavid Howells unsigned long idle_timestamp; /* Time at which last became idle */ 50517926a79SDavid Howells spinlock_t state_lock; /* state-change lock */ 506cf13258fSDavid Howells enum rxrpc_conn_proto_state state; /* current state of connection */ 507a00ce28bSDavid Howells enum rxrpc_call_completion completion; /* Completion condition */ 508a00ce28bSDavid Howells s32 abort_code; /* Abort code of connection abort */ 50917926a79SDavid Howells int debug_id; /* debug ID for printks */ 51017926a79SDavid Howells atomic_t serial; /* packet serial number counter */ 511563ea7d5SDavid Howells unsigned int hi_serial; /* highest serial number received */ 512c1e15b49SDavid Howells u32 service_id; /* Service ID, possibly upgraded */ 5132cc80086SDavid Howells u32 security_level; /* Security level selected */ 51417926a79SDavid Howells u8 security_ix; /* security type */ 51517926a79SDavid Howells u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ 516245500d8SDavid Howells u8 bundle_shift; /* Index into bundle->avail_chans */ 5172cc80086SDavid Howells bool exclusive; /* T if conn is exclusive */ 5182cc80086SDavid Howells bool upgrade; /* T if service ID can be upgraded */ 5192cc80086SDavid Howells u16 orig_service_id; /* Originally requested service ID */ 52064753092SDavid Howells short error; /* Local error code */ 52117926a79SDavid Howells }; 52217926a79SDavid Howells 523dc71db34SDavid Howells static inline bool rxrpc_to_server(const struct rxrpc_skb_priv *sp) 524dc71db34SDavid Howells { 525dc71db34SDavid Howells return sp->hdr.flags & RXRPC_CLIENT_INITIATED; 526dc71db34SDavid Howells } 527dc71db34SDavid Howells 528dc71db34SDavid Howells static inline bool rxrpc_to_client(const struct rxrpc_skb_priv *sp) 529dc71db34SDavid Howells { 530dc71db34SDavid Howells return !rxrpc_to_server(sp); 531dc71db34SDavid Howells } 532dc71db34SDavid Howells 53317926a79SDavid Howells /* 5345b8848d1SDavid Howells * Flags in call->flags. 5355b8848d1SDavid Howells */ 5365b8848d1SDavid Howells enum rxrpc_call_flag { 5375b8848d1SDavid Howells RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ 5385b8848d1SDavid Howells RXRPC_CALL_HAS_USERID, /* has a user ID attached */ 539dabe5a79SDavid Howells RXRPC_CALL_IS_SERVICE, /* Call is service call */ 54045025bceSDavid Howells RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ 541248f219cSDavid Howells RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ 542248f219cSDavid Howells RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ 543a4ea4c47SDavid Howells RXRPC_CALL_TX_ALL_ACKED, /* Last packet has been hard-acked */ 544a5af7e1fSDavid Howells RXRPC_CALL_SEND_PING, /* A ping will need to be sent */ 54557494343SDavid Howells RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */ 546c54e43d7SDavid Howells RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */ 5471a025028SDavid Howells RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */ 5485273a191SDavid Howells RXRPC_CALL_DISCONNECTED, /* The call has been disconnected */ 549b7a7d674SDavid Howells RXRPC_CALL_KERNEL, /* The call was made by the kernel */ 550245500d8SDavid Howells RXRPC_CALL_UPGRADE, /* Service upgrade was requested for the call */ 551f3441d41SDavid Howells RXRPC_CALL_EXCLUSIVE, /* The call uses a once-only connection */ 55293368b6bSDavid Howells RXRPC_CALL_RX_IS_IDLE, /* recvmsg() is idle - send an ACK */ 55393368b6bSDavid Howells RXRPC_CALL_RECVMSG_READ_ALL, /* recvmsg() read all of the received data */ 5545b8848d1SDavid Howells }; 5555b8848d1SDavid Howells 5565b8848d1SDavid Howells /* 5575b8848d1SDavid Howells * Events that can be raised on a call. 5585b8848d1SDavid Howells */ 5595b8848d1SDavid Howells enum rxrpc_call_event { 560bd1fdf8cSDavid Howells RXRPC_CALL_EV_ACK_LOST, /* ACK may be lost, send ping */ 5615e6ef4f1SDavid Howells RXRPC_CALL_EV_INITIAL_PING, /* Send initial ping for a new service call */ 5625b8848d1SDavid Howells }; 5635b8848d1SDavid Howells 5645b8848d1SDavid Howells /* 5655b8848d1SDavid Howells * The states that a call can be in. 5665b8848d1SDavid Howells */ 5675b8848d1SDavid Howells enum rxrpc_call_state { 568999b69f8SDavid Howells RXRPC_CALL_UNINITIALISED, 569999b69f8SDavid Howells RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ 5705b8848d1SDavid Howells RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ 5715b8848d1SDavid Howells RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ 5725b8848d1SDavid Howells RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ 57300e90712SDavid Howells RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ 5745b8848d1SDavid Howells RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ 5755b8848d1SDavid Howells RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ 5765b8848d1SDavid Howells RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ 5775b8848d1SDavid Howells RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ 5785b8848d1SDavid Howells RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ 579f5c17aaeSDavid Howells RXRPC_CALL_COMPLETE, /* - call complete */ 580f5c17aaeSDavid Howells NR__RXRPC_CALL_STATES 581f5c17aaeSDavid Howells }; 582f5c17aaeSDavid Howells 583f5c17aaeSDavid Howells /* 58457494343SDavid Howells * Call Tx congestion management modes. 58557494343SDavid Howells */ 58657494343SDavid Howells enum rxrpc_congest_mode { 58757494343SDavid Howells RXRPC_CALL_SLOW_START, 58857494343SDavid Howells RXRPC_CALL_CONGEST_AVOIDANCE, 58957494343SDavid Howells RXRPC_CALL_PACKET_LOSS, 59057494343SDavid Howells RXRPC_CALL_FAST_RETRANSMIT, 59157494343SDavid Howells NR__RXRPC_CONGEST_MODES 59257494343SDavid Howells }; 59357494343SDavid Howells 59457494343SDavid Howells /* 59517926a79SDavid Howells * RxRPC call definition 59617926a79SDavid Howells * - matched by { connection, call_id } 59717926a79SDavid Howells */ 59817926a79SDavid Howells struct rxrpc_call { 599dee46364SDavid Howells struct rcu_head rcu; 60017926a79SDavid Howells struct rxrpc_connection *conn; /* connection carrying call */ 6011bab27afSDavid Howells struct rxrpc_bundle *bundle; /* Connection bundle to use */ 602df5d8bf7SDavid Howells struct rxrpc_peer *peer; /* Peer record for remote address */ 603f3441d41SDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 6048d94aa38SDavid Howells struct rxrpc_sock __rcu *socket; /* socket responsible */ 605d3be4d24SDavid Howells struct rxrpc_net *rxnet; /* Network namespace to which call belongs */ 606f3441d41SDavid Howells struct key *key; /* Security details */ 60791fcfbe8SDavid Howells const struct rxrpc_security *security; /* applied security module */ 608540b1c48SDavid Howells struct mutex user_mutex; /* User access mutex */ 609f3441d41SDavid Howells struct sockaddr_rxrpc dest_srx; /* Destination address */ 610530403d9SDavid Howells unsigned long delay_ack_at; /* When DELAY ACK needs to happen */ 611bd1fdf8cSDavid Howells unsigned long ack_lost_at; /* When ACK is figured as lost */ 612a158bdd3SDavid Howells unsigned long resend_at; /* When next resend needs to happen */ 613a158bdd3SDavid Howells unsigned long ping_at; /* When next to send a ping */ 614415f44e4SDavid Howells unsigned long keepalive_at; /* When next to send a keepalive ping */ 615a158bdd3SDavid Howells unsigned long expect_rx_by; /* When we expect to get a packet by */ 616a158bdd3SDavid Howells unsigned long expect_req_by; /* When we expect to get a request DATA packet by */ 617a158bdd3SDavid Howells unsigned long expect_term_by; /* When we expect call termination by */ 618a158bdd3SDavid Howells u32 next_rx_timo; /* Timeout for next Rx packet (jif) */ 619a158bdd3SDavid Howells u32 next_req_timo; /* Timeout for next Rx request packet (jif) */ 620248f219cSDavid Howells struct timer_list timer; /* Combined event timer */ 6213feda9d6SDavid Howells struct work_struct destroyer; /* In-process-context destroyer */ 622d001648eSDavid Howells rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ 62317926a79SDavid Howells struct list_head link; /* link in master call list */ 6249d35d880SDavid Howells struct list_head wait_link; /* Link in local->new_client_calls */ 625f66d7490SDavid Howells struct hlist_node error_link; /* link in error distribution list */ 626248f219cSDavid Howells struct list_head accept_link; /* Link in rx->acceptq */ 627248f219cSDavid Howells struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ 628248f219cSDavid Howells struct list_head sock_link; /* Link in rx->sock_calls */ 629248f219cSDavid Howells struct rb_node sock_node; /* Node in rx->calls */ 63015f661dcSDavid Howells struct list_head attend_link; /* Link in local->call_attend_q */ 631a4ea4c47SDavid Howells struct rxrpc_txbuf *tx_pending; /* Tx buffer being filled */ 63245025bceSDavid Howells wait_queue_head_t waitq; /* Wait queue for channel or Tx */ 633e754eba6SDavid Howells s64 tx_total_len; /* Total length left to be transmitted (or -1) */ 63417926a79SDavid Howells unsigned long user_call_ID; /* user-defined call ID */ 63517926a79SDavid Howells unsigned long flags; 63617926a79SDavid Howells unsigned long events; 63720acbd9aSDavid Howells spinlock_t notify_lock; /* Kernel notification lock */ 63857af281eSDavid Howells unsigned int send_abort_why; /* Why the abort [enum rxrpc_abort_reason] */ 639a343b174SDavid Howells s32 send_abort; /* Abort code to be sent */ 640a343b174SDavid Howells short send_abort_err; /* Error to be associated with the abort */ 64157af281eSDavid Howells rxrpc_seq_t send_abort_seq; /* DATA packet that incurred the abort (or 0) */ 642a343b174SDavid Howells s32 abort_code; /* Local/remote abort code */ 643f5c17aaeSDavid Howells int error; /* Local error incurred */ 64496b4059fSDavid Howells enum rxrpc_call_state _state; /* Current state of call (needs barrier) */ 645cf13258fSDavid Howells enum rxrpc_call_completion completion; /* Call completion condition */ 646a0575429SDavid Howells refcount_t ref; 647278ac0cdSDavid Howells u8 security_ix; /* Security type */ 648e138aa7dSDavid Howells enum rxrpc_interruptibility interruptibility; /* At what point call may be interrupted */ 649dabe5a79SDavid Howells u32 call_id; /* call ID on connection */ 650dabe5a79SDavid Howells u32 cid; /* connection ID plus channel index */ 651f3441d41SDavid Howells u32 security_level; /* Security level selected */ 652dabe5a79SDavid Howells int debug_id; /* debug ID for printks */ 6538e83134dSDavid Howells unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ 6548e83134dSDavid Howells unsigned short rx_pkt_len; /* Current recvmsg packet len */ 65517926a79SDavid Howells 6565d7edbc9SDavid Howells /* Transmitted data tracking. */ 657a4ea4c47SDavid Howells spinlock_t tx_lock; /* Transmit queue lock */ 658cf37b598SDavid Howells struct list_head tx_sendmsg; /* Sendmsg prepared packets */ 659a4ea4c47SDavid Howells struct list_head tx_buffer; /* Buffer of transmissible packets */ 660a4ea4c47SDavid Howells rxrpc_seq_t tx_bottom; /* First packet in buffer */ 661a4ea4c47SDavid Howells rxrpc_seq_t tx_transmitted; /* Highest packet transmitted */ 662cf37b598SDavid Howells rxrpc_seq_t tx_prepared; /* Highest Tx slot prepared. */ 663248f219cSDavid Howells rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ 664c7e86acfSDavid Howells u16 tx_backoff; /* Delay to insert due to Tx failure */ 6655d7edbc9SDavid Howells u8 tx_winsize; /* Maximum size of Tx window */ 666a4ea4c47SDavid Howells #define RXRPC_TX_MAX_WINDOW 128 6671fc4fa2aSDavid Howells ktime_t tx_last_sent; /* Last time a transmission occurred */ 6685d7edbc9SDavid Howells 6695d7edbc9SDavid Howells /* Received data tracking */ 6705d7edbc9SDavid Howells struct sk_buff_head recvmsg_queue; /* Queue of packets ready for recvmsg() */ 6715d7edbc9SDavid Howells struct sk_buff_head rx_oos_queue; /* Queue of out of sequence packets */ 6725d7edbc9SDavid Howells 6735d7edbc9SDavid Howells rxrpc_seq_t rx_highest_seq; /* Higest sequence number received */ 6745d7edbc9SDavid Howells rxrpc_seq_t rx_consumed; /* Highest packet consumed */ 6755d7edbc9SDavid Howells rxrpc_serial_t rx_serial; /* Highest serial received for this call */ 6765d7edbc9SDavid Howells u8 rx_winsize; /* Size of Rx window */ 67757494343SDavid Howells 67857494343SDavid Howells /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS 67957494343SDavid Howells * is fixed, we keep these numbers in terms of segments (ie. DATA 68057494343SDavid Howells * packets) rather than bytes. 68157494343SDavid Howells */ 68257494343SDavid Howells #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN 6835086d9a9SDavid Howells #define RXRPC_MIN_CWND (RXRPC_TX_SMSS > 2190 ? 2 : RXRPC_TX_SMSS > 1095 ? 3 : 4) 68457494343SDavid Howells u8 cong_cwnd; /* Congestion window size */ 68557494343SDavid Howells u8 cong_extra; /* Extra to send for congestion management */ 68657494343SDavid Howells u8 cong_ssthresh; /* Slow-start threshold */ 68757494343SDavid Howells enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */ 68857494343SDavid Howells u8 cong_dup_acks; /* Count of ACKs showing missing packets */ 68957494343SDavid Howells u8 cong_cumul_acks; /* Cumulative ACK count */ 69057494343SDavid Howells ktime_t cong_tstamp; /* Last time cwnd was changed */ 69157494343SDavid Howells 6928940ba3cSDavid Howells /* Receive-phase ACK management (ACKs we send). */ 6934e36a95eSDavid Howells u8 ackr_reason; /* reason to ACK */ 6940d12f8a4SDavid Howells rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ 6955d7edbc9SDavid Howells atomic64_t ackr_window; /* Base (in LSW) and top (in MSW) of SACK window */ 6969a3dedcfSDavid Howells atomic_t ackr_nr_unacked; /* Number of unacked packets */ 6979a3dedcfSDavid Howells atomic_t ackr_nr_consumed; /* Number of packets needing hard ACK */ 6985d7edbc9SDavid Howells struct { 6995d7edbc9SDavid Howells #define RXRPC_SACK_SIZE 256 7005d7edbc9SDavid Howells /* SACK table for soft-acked packets */ 7015d7edbc9SDavid Howells u8 ackr_sack_table[RXRPC_SACK_SIZE]; 7025d7edbc9SDavid Howells } __aligned(8); 703a5af7e1fSDavid Howells 7044700c4d8SDavid Howells /* RTT management */ 7054700c4d8SDavid Howells rxrpc_serial_t rtt_serial[4]; /* Serial number of DATA or PING sent */ 7064700c4d8SDavid Howells ktime_t rtt_sent_at[4]; /* Time packet sent */ 7074700c4d8SDavid Howells unsigned long rtt_avail; /* Mask of available slots in bits 0-3, 7084700c4d8SDavid Howells * Mask of pending samples in 8-11 */ 7094700c4d8SDavid Howells #define RXRPC_CALL_RTT_AVAIL_MASK 0xf 7104700c4d8SDavid Howells #define RXRPC_CALL_RTT_PEND_SHIFT 8 71117926a79SDavid Howells 7128940ba3cSDavid Howells /* Transmission-phase ACK management (ACKs we've received). */ 71357494343SDavid Howells ktime_t acks_latest_ts; /* Timestamp of latest ACK received */ 7148940ba3cSDavid Howells rxrpc_seq_t acks_first_seq; /* first sequence number received */ 71581524b63SDavid Howells rxrpc_seq_t acks_prev_seq; /* Highest previousPacket received */ 716a4ea4c47SDavid Howells rxrpc_seq_t acks_hard_ack; /* Latest hard-ack point */ 71731a1b989SDavid Howells rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */ 718589a0c1eSDavid Howells rxrpc_serial_t acks_highest_serial; /* Highest serial number ACK'd */ 71931a1b989SDavid Howells }; 72031a1b989SDavid Howells 72131a1b989SDavid Howells /* 72257494343SDavid Howells * Summary of a new ACK and the changes it made to the Tx buffer packet states. 72331a1b989SDavid Howells */ 72431a1b989SDavid Howells struct rxrpc_ack_summary { 7251fc4fa2aSDavid Howells u16 nr_acks; /* Number of ACKs in packet */ 7261fc4fa2aSDavid Howells u16 nr_new_acks; /* Number of new ACKs in packet */ 7271fc4fa2aSDavid Howells u16 nr_rot_new_acks; /* Number of rotated new ACKs */ 72831a1b989SDavid Howells u8 ack_reason; 729d57a3a15SDavid Howells bool saw_nacks; /* Saw NACKs in packet */ 73031a1b989SDavid Howells bool new_low_nack; /* T if new low NACK found */ 73157494343SDavid Howells bool retrans_timeo; /* T if reTx due to timeout happened */ 73257494343SDavid Howells u8 flight_size; /* Number of unreceived transmissions */ 73357494343SDavid Howells /* Place to stash values for tracing */ 73457494343SDavid Howells enum rxrpc_congest_mode mode:8; 73557494343SDavid Howells u8 cwnd; 73657494343SDavid Howells u8 ssthresh; 73757494343SDavid Howells u8 dup_acks; 73857494343SDavid Howells u8 cumulative_acks; 73917926a79SDavid Howells }; 74017926a79SDavid Howells 74148124178SDavid Howells /* 74248124178SDavid Howells * sendmsg() cmsg-specified parameters. 74348124178SDavid Howells */ 74448124178SDavid Howells enum rxrpc_command { 74548124178SDavid Howells RXRPC_CMD_SEND_DATA, /* send data message */ 74648124178SDavid Howells RXRPC_CMD_SEND_ABORT, /* request abort generation */ 74748124178SDavid Howells RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */ 7482d914c1bSDavid Howells RXRPC_CMD_CHARGE_ACCEPT, /* [server] charge accept preallocation */ 74948124178SDavid Howells }; 75048124178SDavid Howells 75148124178SDavid Howells struct rxrpc_call_params { 75248124178SDavid Howells s64 tx_total_len; /* Total Tx data length (if send data) */ 75348124178SDavid Howells unsigned long user_call_ID; /* User's call ID */ 75448124178SDavid Howells struct { 75548124178SDavid Howells u32 hard; /* Maximum lifetime (sec) */ 75648124178SDavid Howells u32 idle; /* Max time since last data packet (msec) */ 75748124178SDavid Howells u32 normal; /* Max time since last call packet (msec) */ 75848124178SDavid Howells } timeouts; 75948124178SDavid Howells u8 nr_timeouts; /* Number of timeouts specified */ 760b7a7d674SDavid Howells bool kernel; /* T if kernel is making the call */ 761e138aa7dSDavid Howells enum rxrpc_interruptibility interruptibility; /* How is interruptible is the call? */ 76248124178SDavid Howells }; 76348124178SDavid Howells 76448124178SDavid Howells struct rxrpc_send_params { 76548124178SDavid Howells struct rxrpc_call_params call; 76648124178SDavid Howells u32 abort_code; /* Abort code to Tx (if abort) */ 76748124178SDavid Howells enum rxrpc_command command : 8; /* The command to implement */ 76848124178SDavid Howells bool exclusive; /* Shared or exclusive call */ 76948124178SDavid Howells bool upgrade; /* If the connection is upgradeable */ 77048124178SDavid Howells }; 77148124178SDavid Howells 77202a19356SDavid Howells /* 77302a19356SDavid Howells * Buffer of data to be output as a packet. 77402a19356SDavid Howells */ 77502a19356SDavid Howells struct rxrpc_txbuf { 77602a19356SDavid Howells struct rcu_head rcu; 777cf37b598SDavid Howells struct list_head call_link; /* Link in call->tx_sendmsg/tx_buffer */ 77802a19356SDavid Howells struct list_head tx_link; /* Link in live Enc queue or Tx queue */ 77902a19356SDavid Howells ktime_t last_sent; /* Time at which last transmitted */ 78002a19356SDavid Howells refcount_t ref; 78102a19356SDavid Howells rxrpc_seq_t seq; /* Sequence number of this packet */ 78202a19356SDavid Howells unsigned int call_debug_id; 78302a19356SDavid Howells unsigned int debug_id; 78402a19356SDavid Howells unsigned int len; /* Amount of data in buffer */ 78502a19356SDavid Howells unsigned int space; /* Remaining data space */ 78602a19356SDavid Howells unsigned int offset; /* Offset of fill point */ 78702a19356SDavid Howells unsigned long flags; 788d57a3a15SDavid Howells #define RXRPC_TXBUF_LAST 0 /* Set if last packet in Tx phase */ 789d57a3a15SDavid Howells #define RXRPC_TXBUF_RESENT 1 /* Set if has been resent */ 79072f0c6fbSDavid Howells u8 /*enum rxrpc_propose_ack_trace*/ ack_why; /* If ack, why */ 79102a19356SDavid Howells struct { 79202a19356SDavid Howells /* The packet for encrypting and DMA'ing. We align it such 79302a19356SDavid Howells * that data[] aligns correctly for any crypto blocksize. 79402a19356SDavid Howells */ 79502a19356SDavid Howells u8 pad[64 - sizeof(struct rxrpc_wire_header)]; 79602a19356SDavid Howells struct rxrpc_wire_header wire; /* Network-ready header */ 79772f0c6fbSDavid Howells union { 79802a19356SDavid Howells u8 data[RXRPC_JUMBO_DATALEN]; /* Data packet */ 79972f0c6fbSDavid Howells struct { 80072f0c6fbSDavid Howells struct rxrpc_ackpacket ack; 80172f0c6fbSDavid Howells u8 acks[0]; 80272f0c6fbSDavid Howells }; 80372f0c6fbSDavid Howells }; 80402a19356SDavid Howells } __aligned(64); 80502a19356SDavid Howells }; 80602a19356SDavid Howells 80702a19356SDavid Howells static inline bool rxrpc_sending_to_server(const struct rxrpc_txbuf *txb) 80802a19356SDavid Howells { 80902a19356SDavid Howells return txb->wire.flags & RXRPC_CLIENT_INITIATED; 81002a19356SDavid Howells } 81102a19356SDavid Howells 81202a19356SDavid Howells static inline bool rxrpc_sending_to_client(const struct rxrpc_txbuf *txb) 81302a19356SDavid Howells { 81402a19356SDavid Howells return !rxrpc_sending_to_server(txb); 81502a19356SDavid Howells } 81602a19356SDavid Howells 817df844fd4SDavid Howells #include <trace/events/rxrpc.h> 818df844fd4SDavid Howells 81917926a79SDavid Howells /* 820651350d1SDavid Howells * af_rxrpc.c 82117926a79SDavid Howells */ 822a4ea4c47SDavid Howells extern atomic_t rxrpc_n_rx_skbs; 823651350d1SDavid Howells extern struct workqueue_struct *rxrpc_workqueue; 82417926a79SDavid Howells 82517926a79SDavid Howells /* 8260d81a51aSDavid Howells * call_accept.c 82717926a79SDavid Howells */ 82800e90712SDavid Howells int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); 82900e90712SDavid Howells void rxrpc_discard_prealloc(struct rxrpc_sock *); 83057af281eSDavid Howells bool rxrpc_new_incoming_call(struct rxrpc_local *local, 83157af281eSDavid Howells struct rxrpc_peer *peer, 83257af281eSDavid Howells struct rxrpc_connection *conn, 83357af281eSDavid Howells struct sockaddr_rxrpc *peer_srx, 83457af281eSDavid Howells struct sk_buff *skb); 8354f95dd78SDavid Howells void rxrpc_accept_incoming_calls(struct rxrpc_local *); 8362d914c1bSDavid Howells int rxrpc_user_charge_accept(struct rxrpc_sock *, unsigned long); 83717926a79SDavid Howells 83817926a79SDavid Howells /* 8390d81a51aSDavid Howells * call_event.c 84017926a79SDavid Howells */ 84172f0c6fbSDavid Howells void rxrpc_propose_ping(struct rxrpc_call *call, u32 serial, 84272f0c6fbSDavid Howells enum rxrpc_propose_ack_trace why); 84372f0c6fbSDavid Howells void rxrpc_send_ACK(struct rxrpc_call *, u8, rxrpc_serial_t, enum rxrpc_propose_ack_trace); 844530403d9SDavid Howells void rxrpc_propose_delay_ACK(struct rxrpc_call *, rxrpc_serial_t, 845530403d9SDavid Howells enum rxrpc_propose_ack_trace); 846a4ea4c47SDavid Howells void rxrpc_shrink_call_tx_buffer(struct rxrpc_call *); 8475e6ef4f1SDavid Howells void rxrpc_resend(struct rxrpc_call *call, struct sk_buff *ack_skb); 84817926a79SDavid Howells 8494a7f62f9SDavid Howells void rxrpc_reduce_call_timer(struct rxrpc_call *call, 850a158bdd3SDavid Howells unsigned long expire_at, 851a158bdd3SDavid Howells unsigned long now, 8524a7f62f9SDavid Howells enum rxrpc_timer_trace why); 8534a7f62f9SDavid Howells 85457af281eSDavid Howells bool rxrpc_input_call_event(struct rxrpc_call *call, struct sk_buff *skb); 8555e6ef4f1SDavid Howells 85617926a79SDavid Howells /* 8570d81a51aSDavid Howells * call_object.c 85817926a79SDavid Howells */ 859f5c17aaeSDavid Howells extern const char *const rxrpc_call_states[]; 860f5c17aaeSDavid Howells extern const char *const rxrpc_call_completions[]; 86117926a79SDavid Howells extern struct kmem_cache *rxrpc_call_jar; 86217926a79SDavid Howells 86315f661dcSDavid Howells void rxrpc_poke_call(struct rxrpc_call *call, enum rxrpc_call_poke_trace what); 8642341e077SDavid Howells struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); 865a25e21f0SDavid Howells struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *, gfp_t, unsigned int); 8662341e077SDavid Howells struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, 86719ffa01cSDavid Howells struct rxrpc_conn_parameters *, 868999b69f8SDavid Howells struct sockaddr_rxrpc *, 869a25e21f0SDavid Howells struct rxrpc_call_params *, gfp_t, 870a25e21f0SDavid Howells unsigned int); 8719d35d880SDavid Howells void rxrpc_start_call_timer(struct rxrpc_call *call); 872248f219cSDavid Howells void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, 87342886ffeSDavid Howells struct sk_buff *); 8748d94aa38SDavid Howells void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); 875c1b1203dSJoe Perches void rxrpc_release_calls_on_socket(struct rxrpc_sock *); 876cb0fc0c9SDavid Howells void rxrpc_see_call(struct rxrpc_call *, enum rxrpc_call_trace); 8775e6ef4f1SDavid Howells struct rxrpc_call *rxrpc_try_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 878fff72429SDavid Howells void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 879fff72429SDavid Howells void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); 88000e90712SDavid Howells void rxrpc_cleanup_call(struct rxrpc_call *); 8812baec2c3SDavid Howells void rxrpc_destroy_all_calls(struct rxrpc_net *); 88217926a79SDavid Howells 883dabe5a79SDavid Howells static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) 884dabe5a79SDavid Howells { 885dabe5a79SDavid Howells return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); 886dabe5a79SDavid Howells } 887dabe5a79SDavid Howells 888dabe5a79SDavid Howells static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) 889dabe5a79SDavid Howells { 890dabe5a79SDavid Howells return !rxrpc_is_service_call(call); 891dabe5a79SDavid Howells } 892dabe5a79SDavid Howells 89317926a79SDavid Howells /* 8940b9bb322SDavid Howells * call_state.c 8950b9bb322SDavid Howells */ 8960b9bb322SDavid Howells bool rxrpc_set_call_completion(struct rxrpc_call *call, 8970b9bb322SDavid Howells enum rxrpc_call_completion compl, 8980b9bb322SDavid Howells u32 abort_code, 8990b9bb322SDavid Howells int error); 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); 90396b4059fSDavid Howells void rxrpc_prefail_call(struct rxrpc_call *call, enum rxrpc_call_completion compl, 90496b4059fSDavid Howells int error); 90596b4059fSDavid Howells 90696b4059fSDavid Howells static inline void rxrpc_set_call_state(struct rxrpc_call *call, 90796b4059fSDavid Howells enum rxrpc_call_state state) 90896b4059fSDavid Howells { 90996b4059fSDavid Howells /* Order write of completion info before write of ->state. */ 91096b4059fSDavid Howells smp_store_release(&call->_state, state); 9119d35d880SDavid Howells wake_up(&call->waitq); 91296b4059fSDavid Howells } 91396b4059fSDavid Howells 91496b4059fSDavid Howells static inline enum rxrpc_call_state __rxrpc_call_state(const struct rxrpc_call *call) 91596b4059fSDavid Howells { 91696b4059fSDavid Howells return call->_state; /* Only inside I/O thread */ 91796b4059fSDavid Howells } 91896b4059fSDavid Howells 91996b4059fSDavid Howells static inline bool __rxrpc_call_is_complete(const struct rxrpc_call *call) 92096b4059fSDavid Howells { 92196b4059fSDavid Howells return __rxrpc_call_state(call) == RXRPC_CALL_COMPLETE; 92296b4059fSDavid Howells } 9230b9bb322SDavid Howells 924d41b3f5bSDavid Howells static inline enum rxrpc_call_state rxrpc_call_state(const struct rxrpc_call *call) 925d41b3f5bSDavid Howells { 92696b4059fSDavid Howells /* Order read ->state before read of completion info. */ 92796b4059fSDavid Howells return smp_load_acquire(&call->_state); 928d41b3f5bSDavid Howells } 929d41b3f5bSDavid Howells 930d41b3f5bSDavid Howells static inline bool rxrpc_call_is_complete(const struct rxrpc_call *call) 931d41b3f5bSDavid Howells { 932d41b3f5bSDavid Howells return rxrpc_call_state(call) == RXRPC_CALL_COMPLETE; 933d41b3f5bSDavid Howells } 934d41b3f5bSDavid Howells 935d41b3f5bSDavid Howells static inline bool rxrpc_call_has_failed(const struct rxrpc_call *call) 936d41b3f5bSDavid Howells { 937d41b3f5bSDavid Howells return rxrpc_call_is_complete(call) && call->completion != RXRPC_CALL_SUCCEEDED; 938d41b3f5bSDavid Howells } 939d41b3f5bSDavid Howells 9400b9bb322SDavid Howells /* 9414a3388c8SDavid Howells * conn_client.c 9424a3388c8SDavid Howells */ 94345025bceSDavid Howells extern unsigned int rxrpc_reap_client_connections; 944a158bdd3SDavid Howells extern unsigned long rxrpc_conn_idle_client_expiry; 945a158bdd3SDavid Howells extern unsigned long rxrpc_conn_idle_client_fast_expiry; 9464a3388c8SDavid Howells 9479d35d880SDavid Howells void rxrpc_purge_client_connections(struct rxrpc_local *local); 948fa3492abSDavid Howells struct rxrpc_bundle *rxrpc_get_bundle(struct rxrpc_bundle *, enum rxrpc_bundle_trace); 949fa3492abSDavid Howells void rxrpc_put_bundle(struct rxrpc_bundle *, enum rxrpc_bundle_trace); 9509d35d880SDavid Howells int rxrpc_look_up_bundle(struct rxrpc_call *call, gfp_t gfp); 9519d35d880SDavid Howells void rxrpc_connect_client_calls(struct rxrpc_local *local); 95245025bceSDavid Howells void rxrpc_expose_client_call(struct rxrpc_call *); 953245500d8SDavid Howells void rxrpc_disconnect_client_call(struct rxrpc_bundle *, struct rxrpc_call *); 9541bab27afSDavid Howells void rxrpc_deactivate_bundle(struct rxrpc_bundle *bundle); 9557fa25105SDavid Howells void rxrpc_put_client_conn(struct rxrpc_connection *, enum rxrpc_conn_trace); 9560d6bf319SDavid Howells void rxrpc_discard_expired_client_conns(struct rxrpc_local *local); 957d12040b6SDavid Howells void rxrpc_clean_up_local_conns(struct rxrpc_local *); 9584a3388c8SDavid Howells 9594a3388c8SDavid Howells /* 9600d81a51aSDavid Howells * conn_event.c 9610d81a51aSDavid Howells */ 96230df927bSDavid Howells void rxrpc_conn_retransmit_call(struct rxrpc_connection *conn, struct sk_buff *skb, 96330df927bSDavid Howells unsigned int channel); 964a00ce28bSDavid Howells int rxrpc_abort_conn(struct rxrpc_connection *conn, struct sk_buff *skb, 96557af281eSDavid Howells s32 abort_code, int err, enum rxrpc_abort_reason why); 9660d81a51aSDavid Howells void rxrpc_process_connection(struct work_struct *); 967ddc7834aSDavid Howells void rxrpc_process_delayed_final_acks(struct rxrpc_connection *, bool); 96857af281eSDavid Howells bool rxrpc_input_conn_packet(struct rxrpc_connection *conn, struct sk_buff *skb); 969f2cce89aSDavid Howells void rxrpc_input_conn_event(struct rxrpc_connection *conn, struct sk_buff *skb); 9700d81a51aSDavid Howells 971a00ce28bSDavid Howells static inline bool rxrpc_is_conn_aborted(const struct rxrpc_connection *conn) 972a00ce28bSDavid Howells { 973a00ce28bSDavid Howells /* Order reading the abort info after the state check. */ 974a00ce28bSDavid Howells return smp_load_acquire(&conn->state) == RXRPC_CONN_ABORTED; 975a00ce28bSDavid Howells } 976a00ce28bSDavid Howells 9770d81a51aSDavid Howells /* 9780d81a51aSDavid Howells * conn_object.c 97917926a79SDavid Howells */ 980dad8aff7SDavid Howells extern unsigned int rxrpc_connection_expiry; 981f859ab61SDavid Howells extern unsigned int rxrpc_closed_conn_expiry; 98217926a79SDavid Howells 983f2cce89aSDavid Howells void rxrpc_poke_conn(struct rxrpc_connection *conn, enum rxrpc_conn_trace why); 9843cec055cSDavid Howells struct rxrpc_connection *rxrpc_alloc_connection(struct rxrpc_net *, gfp_t); 9855e6ef4f1SDavid Howells struct rxrpc_connection *rxrpc_find_client_connection_rcu(struct rxrpc_local *, 986393a2a20SDavid Howells struct sockaddr_rxrpc *, 9875e6ef4f1SDavid Howells struct sk_buff *); 98845025bceSDavid Howells void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); 989999b69f8SDavid Howells void rxrpc_disconnect_call(struct rxrpc_call *); 9903cec055cSDavid Howells void rxrpc_kill_client_conn(struct rxrpc_connection *); 9913cec055cSDavid Howells void rxrpc_queue_conn(struct rxrpc_connection *, enum rxrpc_conn_trace); 9927fa25105SDavid Howells void rxrpc_see_connection(struct rxrpc_connection *, enum rxrpc_conn_trace); 9937fa25105SDavid Howells struct rxrpc_connection *rxrpc_get_connection(struct rxrpc_connection *, 9947fa25105SDavid Howells enum rxrpc_conn_trace); 9957fa25105SDavid Howells struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *, 9967fa25105SDavid Howells enum rxrpc_conn_trace); 9973cec055cSDavid Howells void rxrpc_put_connection(struct rxrpc_connection *, enum rxrpc_conn_trace); 9982baec2c3SDavid Howells void rxrpc_service_connection_reaper(struct work_struct *); 9992baec2c3SDavid Howells void rxrpc_destroy_all_connections(struct rxrpc_net *); 100017926a79SDavid Howells 100119ffa01cSDavid Howells static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) 100219ffa01cSDavid Howells { 100319ffa01cSDavid Howells return conn->out_clientflag; 100419ffa01cSDavid Howells } 100519ffa01cSDavid Howells 100619ffa01cSDavid Howells static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) 100719ffa01cSDavid Howells { 1008e8d70ce1SDavid Howells return !rxrpc_conn_is_client(conn); 100919ffa01cSDavid Howells } 101019ffa01cSDavid Howells 10113136ef49SDavid Howells static inline void rxrpc_reduce_conn_timer(struct rxrpc_connection *conn, 10123136ef49SDavid Howells unsigned long expire_at) 10133136ef49SDavid Howells { 10143136ef49SDavid Howells timer_reduce(&conn->timer, expire_at); 10153136ef49SDavid Howells } 10163136ef49SDavid Howells 101717926a79SDavid Howells /* 10187877a4a4SDavid Howells * conn_service.c 10197877a4a4SDavid Howells */ 10208496af50SDavid Howells struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, 10218496af50SDavid Howells struct sk_buff *); 10222baec2c3SDavid Howells struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t); 1023063c60d3SDavid Howells void rxrpc_new_incoming_connection(struct rxrpc_sock *, struct rxrpc_connection *, 1024ec832bd0SDavid Howells const struct rxrpc_security *, struct sk_buff *); 1025001c1122SDavid Howells void rxrpc_unpublish_service_conn(struct rxrpc_connection *); 10267877a4a4SDavid Howells 10277877a4a4SDavid Howells /* 10280d81a51aSDavid Howells * input.c 102917926a79SDavid Howells */ 10305086d9a9SDavid Howells void rxrpc_congestion_degrade(struct rxrpc_call *); 10315e6ef4f1SDavid Howells void rxrpc_input_call_packet(struct rxrpc_call *, struct sk_buff *); 10325e6ef4f1SDavid Howells void rxrpc_implicit_end_call(struct rxrpc_call *, struct sk_buff *); 103396b2d69bSDavid Howells 103496b2d69bSDavid Howells /* 103596b2d69bSDavid Howells * io_thread.c 103696b2d69bSDavid Howells */ 1037446b3e14SDavid Howells int rxrpc_encap_rcv(struct sock *, struct sk_buff *); 1038ff734825SDavid Howells void rxrpc_error_report(struct sock *); 103957af281eSDavid Howells bool rxrpc_direct_abort(struct sk_buff *skb, enum rxrpc_abort_reason why, 104057af281eSDavid Howells s32 abort_code, int err); 1041a275da62SDavid Howells int rxrpc_io_thread(void *data); 1042a275da62SDavid Howells static inline void rxrpc_wake_up_io_thread(struct rxrpc_local *local) 1043a275da62SDavid Howells { 1044a275da62SDavid Howells wake_up_process(local->io_thread); 1045a275da62SDavid Howells } 104617926a79SDavid Howells 104757af281eSDavid Howells static inline bool rxrpc_protocol_error(struct sk_buff *skb, enum rxrpc_abort_reason why) 104857af281eSDavid Howells { 104957af281eSDavid Howells return rxrpc_direct_abort(skb, why, RX_PROTOCOL_ERROR, -EPROTO); 105057af281eSDavid Howells } 105157af281eSDavid Howells 105217926a79SDavid Howells /* 10530d81a51aSDavid Howells * insecure.c 105417926a79SDavid Howells */ 10550d81a51aSDavid Howells extern const struct rxrpc_security rxrpc_no_security; 105617926a79SDavid Howells 105717926a79SDavid Howells /* 10580d81a51aSDavid Howells * key.c 105917926a79SDavid Howells */ 106017926a79SDavid Howells extern struct key_type key_type_rxrpc; 106117926a79SDavid Howells 1062a7b75c5aSChristoph Hellwig int rxrpc_request_key(struct rxrpc_sock *, sockptr_t , int); 106310674a03SBaolin Wang int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t, 1064c1b1203dSJoe Perches u32); 106517926a79SDavid Howells 106617926a79SDavid Howells /* 106787563616SDavid Howells * local_event.c 106887563616SDavid Howells */ 10695e6ef4f1SDavid Howells void rxrpc_send_version_request(struct rxrpc_local *local, 10705e6ef4f1SDavid Howells struct rxrpc_host_header *hdr, 10715e6ef4f1SDavid Howells struct sk_buff *skb); 107287563616SDavid Howells 107387563616SDavid Howells /* 10740d81a51aSDavid Howells * local_object.c 107517926a79SDavid Howells */ 10762baec2c3SDavid Howells struct rxrpc_local *rxrpc_lookup_local(struct net *, const struct sockaddr_rxrpc *); 10770fde882fSDavid Howells struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *, enum rxrpc_local_trace); 10780fde882fSDavid Howells struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *, enum rxrpc_local_trace); 10790fde882fSDavid Howells void rxrpc_put_local(struct rxrpc_local *, enum rxrpc_local_trace); 10800fde882fSDavid Howells struct rxrpc_local *rxrpc_use_local(struct rxrpc_local *, enum rxrpc_local_trace); 10810fde882fSDavid Howells void rxrpc_unuse_local(struct rxrpc_local *, enum rxrpc_local_trace); 1082a275da62SDavid Howells void rxrpc_destroy_local(struct rxrpc_local *local); 10832baec2c3SDavid Howells void rxrpc_destroy_all_locals(struct rxrpc_net *); 1084e0e4d82fSDavid Howells 10850fde882fSDavid Howells static inline bool __rxrpc_use_local(struct rxrpc_local *local, 10860fde882fSDavid Howells enum rxrpc_local_trace why) 108704d36d74SDavid Howells { 10880fde882fSDavid Howells int r, u; 10890fde882fSDavid Howells 10900fde882fSDavid Howells r = refcount_read(&local->ref); 10910fde882fSDavid Howells u = atomic_fetch_add_unless(&local->active_users, 1, 0); 10920fde882fSDavid Howells trace_rxrpc_local(local->debug_id, why, r, u); 10930fde882fSDavid Howells return u != 0; 10940fde882fSDavid Howells } 10950fde882fSDavid Howells 10960fde882fSDavid Howells static inline void rxrpc_see_local(struct rxrpc_local *local, 10970fde882fSDavid Howells enum rxrpc_local_trace why) 10980fde882fSDavid Howells { 10990fde882fSDavid Howells int r, u; 11000fde882fSDavid Howells 11010fde882fSDavid Howells r = refcount_read(&local->ref); 11020fde882fSDavid Howells u = atomic_read(&local->active_users); 11030fde882fSDavid Howells trace_rxrpc_local(local->debug_id, why, r, u); 110404d36d74SDavid Howells } 110504d36d74SDavid Howells 1106e0e4d82fSDavid Howells /* 11078e688d9cSDavid Howells * misc.c 11088e688d9cSDavid Howells */ 11090e119b41SDavid Howells extern unsigned int rxrpc_max_backlog __read_mostly; 1110a158bdd3SDavid Howells extern unsigned long rxrpc_soft_ack_delay; 1111a158bdd3SDavid Howells extern unsigned long rxrpc_idle_ack_delay; 11128e688d9cSDavid Howells extern unsigned int rxrpc_rx_window_size; 11138e688d9cSDavid Howells extern unsigned int rxrpc_rx_mtu; 11148e688d9cSDavid Howells extern unsigned int rxrpc_rx_jumbo_max; 1115*af094824SDavid Howells #ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY 1116*af094824SDavid Howells extern unsigned long rxrpc_inject_rx_delay; 1117*af094824SDavid Howells #endif 11188e688d9cSDavid Howells 11198e688d9cSDavid Howells /* 11202baec2c3SDavid Howells * net_ns.c 11212baec2c3SDavid Howells */ 11222baec2c3SDavid Howells extern unsigned int rxrpc_net_id; 11232baec2c3SDavid Howells extern struct pernet_operations rxrpc_net_ops; 11242baec2c3SDavid Howells 11252baec2c3SDavid Howells static inline struct rxrpc_net *rxrpc_net(struct net *net) 11262baec2c3SDavid Howells { 11272baec2c3SDavid Howells return net_generic(net, rxrpc_net_id); 11282baec2c3SDavid Howells } 11292baec2c3SDavid Howells 11302baec2c3SDavid Howells /* 11310d81a51aSDavid Howells * output.c 11320d81a51aSDavid Howells */ 1133b0346843SDavid Howells int rxrpc_send_ack_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb); 113426cb02aaSDavid Howells int rxrpc_send_abort_packet(struct rxrpc_call *); 1135a4ea4c47SDavid Howells int rxrpc_send_data_packet(struct rxrpc_call *, struct rxrpc_txbuf *); 1136a00ce28bSDavid Howells void rxrpc_send_conn_abort(struct rxrpc_connection *conn); 11375e6ef4f1SDavid Howells void rxrpc_reject_packet(struct rxrpc_local *local, struct sk_buff *skb); 1138ace45becSDavid Howells void rxrpc_send_keepalive(struct rxrpc_peer *); 1139cf37b598SDavid Howells void rxrpc_transmit_one(struct rxrpc_call *call, struct rxrpc_txbuf *txb); 11400d81a51aSDavid Howells 11410d81a51aSDavid Howells /* 1142abe89ef0SDavid Howells * peer_event.c 11430d81a51aSDavid Howells */ 1144ff734825SDavid Howells void rxrpc_input_error(struct rxrpc_local *, struct sk_buff *); 1145ace45becSDavid Howells void rxrpc_peer_keepalive_worker(struct work_struct *); 11460d81a51aSDavid Howells 11470d81a51aSDavid Howells /* 11480d81a51aSDavid Howells * peer_object.c 11490d81a51aSDavid Howells */ 1150be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, 1151be6e6707SDavid Howells const struct sockaddr_rxrpc *); 11528a758d98SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *local, 11538a758d98SDavid Howells struct sockaddr_rxrpc *srx, gfp_t gfp); 115447c810a7SDavid Howells struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t, 115547c810a7SDavid Howells enum rxrpc_peer_trace); 11568a758d98SDavid Howells void rxrpc_new_incoming_peer(struct rxrpc_local *local, struct rxrpc_peer *peer); 115717226f12SDavid Howells void rxrpc_destroy_all_peers(struct rxrpc_net *); 115847c810a7SDavid Howells struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *, enum rxrpc_peer_trace); 115947c810a7SDavid Howells struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *, enum rxrpc_peer_trace); 116047c810a7SDavid Howells void rxrpc_put_peer(struct rxrpc_peer *, enum rxrpc_peer_trace); 11610d81a51aSDavid Howells 11620d81a51aSDavid Howells /* 11630d81a51aSDavid Howells * proc.c 11640d81a51aSDavid Howells */ 1165c3506372SChristoph Hellwig extern const struct seq_operations rxrpc_call_seq_ops; 1166c3506372SChristoph Hellwig extern const struct seq_operations rxrpc_connection_seq_ops; 1167bc0e7cf4SDavid Howells extern const struct seq_operations rxrpc_peer_seq_ops; 116833912c26SDavid Howells extern const struct seq_operations rxrpc_local_seq_ops; 11690d81a51aSDavid Howells 11700d81a51aSDavid Howells /* 11710d81a51aSDavid Howells * recvmsg.c 11720d81a51aSDavid Howells */ 1173248f219cSDavid Howells void rxrpc_notify_socket(struct rxrpc_call *); 11740d81a51aSDavid Howells int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); 11750d81a51aSDavid Howells 11760d81a51aSDavid Howells /* 11773067bf8cSDavid Howells * Abort a call due to a protocol error. 11783067bf8cSDavid Howells */ 117957af281eSDavid Howells static inline int rxrpc_abort_eproto(struct rxrpc_call *call, 11803067bf8cSDavid Howells struct sk_buff *skb, 118157af281eSDavid Howells s32 abort_code, 118257af281eSDavid Howells enum rxrpc_abort_reason why) 11833067bf8cSDavid Howells { 11843067bf8cSDavid Howells struct rxrpc_skb_priv *sp = rxrpc_skb(skb); 11853067bf8cSDavid Howells 118657af281eSDavid Howells rxrpc_abort_call(call, sp->hdr.seq, abort_code, -EPROTO, why); 118757af281eSDavid Howells return -EPROTO; 11883067bf8cSDavid Howells } 11893067bf8cSDavid Howells 11903067bf8cSDavid Howells /* 1191c410bf01SDavid Howells * rtt.c 1192c410bf01SDavid Howells */ 11934700c4d8SDavid Howells void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, int, 1194c410bf01SDavid Howells rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); 1195c410bf01SDavid Howells unsigned long rxrpc_get_rto_backoff(struct rxrpc_peer *, bool); 1196c410bf01SDavid Howells void rxrpc_peer_init_rtt(struct rxrpc_peer *); 1197c410bf01SDavid Howells 1198c410bf01SDavid Howells /* 1199648af7fcSDavid Howells * rxkad.c 1200648af7fcSDavid Howells */ 1201648af7fcSDavid Howells #ifdef CONFIG_RXKAD 1202648af7fcSDavid Howells extern const struct rxrpc_security rxkad; 1203648af7fcSDavid Howells #endif 1204648af7fcSDavid Howells 1205648af7fcSDavid Howells /* 12060d81a51aSDavid Howells * security.c 12070d81a51aSDavid Howells */ 12080d81a51aSDavid Howells int __init rxrpc_init_security(void); 120912da59fcSDavid Howells const struct rxrpc_security *rxrpc_security_lookup(u8); 12100d81a51aSDavid Howells void rxrpc_exit_security(void); 1211f3441d41SDavid Howells int rxrpc_init_client_call_security(struct rxrpc_call *); 12120d81a51aSDavid Howells int rxrpc_init_client_conn_security(struct rxrpc_connection *); 1213ec832bd0SDavid Howells const struct rxrpc_security *rxrpc_get_incoming_security(struct rxrpc_sock *, 1214063c60d3SDavid Howells struct sk_buff *); 1215ec832bd0SDavid Howells struct key *rxrpc_look_up_server_security(struct rxrpc_connection *, 1216ec832bd0SDavid Howells struct sk_buff *, u32, u32); 12170d81a51aSDavid Howells 12180d81a51aSDavid Howells /* 12190b58b8a1SDavid Howells * sendmsg.c 12200b58b8a1SDavid Howells */ 122157af281eSDavid Howells bool rxrpc_propose_abort(struct rxrpc_call *call, s32 abort_code, int error, 122257af281eSDavid Howells enum rxrpc_abort_reason why); 12230b58b8a1SDavid Howells int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); 12240b58b8a1SDavid Howells 12250b58b8a1SDavid Howells /* 1226ca7fb100SDavid Howells * server_key.c 1227ca7fb100SDavid Howells */ 1228ca7fb100SDavid Howells extern struct key_type key_type_rxrpc_s; 1229ca7fb100SDavid Howells 1230ca7fb100SDavid Howells int rxrpc_server_keyring(struct rxrpc_sock *, sockptr_t, int); 1231ca7fb100SDavid Howells 1232ca7fb100SDavid Howells /* 12330d81a51aSDavid Howells * skbuff.c 12340d81a51aSDavid Howells */ 1235d001648eSDavid Howells void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); 123671f3ca40SDavid Howells void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); 123771f3ca40SDavid Howells void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); 1238d0d5c0cdSDavid Howells void rxrpc_eaten_skb(struct sk_buff *, enum rxrpc_skb_trace); 123971f3ca40SDavid Howells void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); 124071f3ca40SDavid Howells void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); 1241df844fd4SDavid Howells void rxrpc_purge_queue(struct sk_buff_head *); 12420d81a51aSDavid Howells 12430d81a51aSDavid Howells /* 1244b0154246SDavid Howells * stats.c 1245b0154246SDavid Howells */ 1246b0154246SDavid Howells int rxrpc_stats_show(struct seq_file *seq, void *v); 1247b0154246SDavid Howells int rxrpc_stats_clear(struct file *file, char *buf, size_t size); 1248b0154246SDavid Howells 1249b0154246SDavid Howells #define rxrpc_inc_stat(rxnet, s) atomic_inc(&(rxnet)->s) 1250b0154246SDavid Howells #define rxrpc_dec_stat(rxnet, s) atomic_dec(&(rxnet)->s) 1251b0154246SDavid Howells 1252b0154246SDavid Howells /* 12535873c083SDavid Howells * sysctl.c 12545873c083SDavid Howells */ 12555873c083SDavid Howells #ifdef CONFIG_SYSCTL 12565873c083SDavid Howells extern int __init rxrpc_sysctl_init(void); 12575873c083SDavid Howells extern void rxrpc_sysctl_exit(void); 12585873c083SDavid Howells #else 12595873c083SDavid Howells static inline int __init rxrpc_sysctl_init(void) { return 0; } 12605873c083SDavid Howells static inline void rxrpc_sysctl_exit(void) {} 12615873c083SDavid Howells #endif 12625873c083SDavid Howells 12635873c083SDavid Howells /* 126402a19356SDavid Howells * txbuf.c 126502a19356SDavid Howells */ 126602a19356SDavid Howells extern atomic_t rxrpc_nr_txbuf; 126702a19356SDavid Howells struct rxrpc_txbuf *rxrpc_alloc_txbuf(struct rxrpc_call *call, u8 packet_type, 126802a19356SDavid Howells gfp_t gfp); 126902a19356SDavid Howells void rxrpc_get_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what); 127002a19356SDavid Howells void rxrpc_see_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what); 127102a19356SDavid Howells void rxrpc_put_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what); 127202a19356SDavid Howells 127302a19356SDavid Howells /* 1274be6e6707SDavid Howells * utils.c 1275be6e6707SDavid Howells */ 12765a790b73SDavid Howells int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 1277be6e6707SDavid Howells 1278248f219cSDavid Howells static inline bool before(u32 seq1, u32 seq2) 1279248f219cSDavid Howells { 1280248f219cSDavid Howells return (s32)(seq1 - seq2) < 0; 1281248f219cSDavid Howells } 1282248f219cSDavid Howells static inline bool before_eq(u32 seq1, u32 seq2) 1283248f219cSDavid Howells { 1284248f219cSDavid Howells return (s32)(seq1 - seq2) <= 0; 1285248f219cSDavid Howells } 1286248f219cSDavid Howells static inline bool after(u32 seq1, u32 seq2) 1287248f219cSDavid Howells { 1288248f219cSDavid Howells return (s32)(seq1 - seq2) > 0; 1289248f219cSDavid Howells } 1290248f219cSDavid Howells static inline bool after_eq(u32 seq1, u32 seq2) 1291248f219cSDavid Howells { 1292248f219cSDavid Howells return (s32)(seq1 - seq2) >= 0; 1293248f219cSDavid Howells } 1294248f219cSDavid Howells 1295be6e6707SDavid Howells /* 129617926a79SDavid Howells * debug tracing 129717926a79SDavid Howells */ 129895c96174SEric Dumazet extern unsigned int rxrpc_debug; 129917926a79SDavid Howells 130017926a79SDavid Howells #define dbgprintk(FMT,...) \ 13019f389f4bSSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 130217926a79SDavid Howells 13030dc47877SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 13040dc47877SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 130517926a79SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 130617926a79SDavid Howells 130717926a79SDavid Howells 130817926a79SDavid Howells #if defined(__KDEBUG) 130917926a79SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 131017926a79SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 131117926a79SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 131217926a79SDavid Howells 131317926a79SDavid Howells #elif defined(CONFIG_AF_RXRPC_DEBUG) 131417926a79SDavid Howells #define RXRPC_DEBUG_KENTER 0x01 131517926a79SDavid Howells #define RXRPC_DEBUG_KLEAVE 0x02 131617926a79SDavid Howells #define RXRPC_DEBUG_KDEBUG 0x04 131717926a79SDavid Howells 131817926a79SDavid Howells #define _enter(FMT,...) \ 131917926a79SDavid Howells do { \ 132017926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ 132117926a79SDavid Howells kenter(FMT,##__VA_ARGS__); \ 132217926a79SDavid Howells } while (0) 132317926a79SDavid Howells 132417926a79SDavid Howells #define _leave(FMT,...) \ 132517926a79SDavid Howells do { \ 132617926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ 132717926a79SDavid Howells kleave(FMT,##__VA_ARGS__); \ 132817926a79SDavid Howells } while (0) 132917926a79SDavid Howells 133017926a79SDavid Howells #define _debug(FMT,...) \ 133117926a79SDavid Howells do { \ 133217926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ 133317926a79SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 133417926a79SDavid Howells } while (0) 133517926a79SDavid Howells 133617926a79SDavid Howells #else 133712fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 133812fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 133912fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 134017926a79SDavid Howells #endif 134117926a79SDavid Howells 134217926a79SDavid Howells /* 134317926a79SDavid Howells * debug assertion checking 134417926a79SDavid Howells */ 134517926a79SDavid Howells #if 1 // defined(__KDEBUGALL) 134617926a79SDavid Howells 134717926a79SDavid Howells #define ASSERT(X) \ 134817926a79SDavid Howells do { \ 134917926a79SDavid Howells if (unlikely(!(X))) { \ 13509b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 135117926a79SDavid Howells BUG(); \ 135217926a79SDavid Howells } \ 135317926a79SDavid Howells } while (0) 135417926a79SDavid Howells 135517926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 135617926a79SDavid Howells do { \ 1357cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1358cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 13599b6d5398SJoe Perches if (unlikely(!(_x OP _y))) { \ 13609b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1361cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1362cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 136317926a79SDavid Howells BUG(); \ 136417926a79SDavid Howells } \ 136517926a79SDavid Howells } while (0) 136617926a79SDavid Howells 136717926a79SDavid Howells #define ASSERTIF(C, X) \ 136817926a79SDavid Howells do { \ 136917926a79SDavid Howells if (unlikely((C) && !(X))) { \ 13709b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 137117926a79SDavid Howells BUG(); \ 137217926a79SDavid Howells } \ 137317926a79SDavid Howells } while (0) 137417926a79SDavid Howells 137517926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 137617926a79SDavid Howells do { \ 1377cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1378cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 13799b6d5398SJoe Perches if (unlikely((C) && !(_x OP _y))) { \ 13809b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1381cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1382cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 138317926a79SDavid Howells BUG(); \ 138417926a79SDavid Howells } \ 138517926a79SDavid Howells } while (0) 138617926a79SDavid Howells 138717926a79SDavid Howells #else 138817926a79SDavid Howells 138917926a79SDavid Howells #define ASSERT(X) \ 139017926a79SDavid Howells do { \ 139117926a79SDavid Howells } while (0) 139217926a79SDavid Howells 139317926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 139417926a79SDavid Howells do { \ 139517926a79SDavid Howells } while (0) 139617926a79SDavid Howells 139717926a79SDavid Howells #define ASSERTIF(C, X) \ 139817926a79SDavid Howells do { \ 139917926a79SDavid Howells } while (0) 140017926a79SDavid Howells 140117926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 140217926a79SDavid Howells do { \ 140317926a79SDavid Howells } while (0) 140417926a79SDavid Howells 140517926a79SDavid Howells #endif /* __KDEBUGALL */ 1406