117926a79SDavid Howells /* AF_RXRPC internal definitions 217926a79SDavid Howells * 317926a79SDavid Howells * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. 417926a79SDavid Howells * Written by David Howells (dhowells@redhat.com) 517926a79SDavid Howells * 617926a79SDavid Howells * This program is free software; you can redistribute it and/or 717926a79SDavid Howells * modify it under the terms of the GNU General Public License 817926a79SDavid Howells * as published by the Free Software Foundation; either version 917926a79SDavid Howells * 2 of the License, or (at your option) any later version. 1017926a79SDavid Howells */ 1117926a79SDavid Howells 12be6e6707SDavid Howells #include <linux/atomic.h> 138496af50SDavid Howells #include <linux/seqlock.h> 142baec2c3SDavid Howells #include <net/net_namespace.h> 152baec2c3SDavid Howells #include <net/netns/generic.h> 16e0e4d82fSDavid Howells #include <net/sock.h> 17be6e6707SDavid Howells #include <net/af_rxrpc.h> 18ddc6c70fSDavid Howells #include "protocol.h" 1917926a79SDavid Howells 2017926a79SDavid Howells #if 0 2117926a79SDavid Howells #define CHECK_SLAB_OKAY(X) \ 2217926a79SDavid Howells BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \ 2317926a79SDavid Howells (POISON_FREE << 8 | POISON_FREE)) 2417926a79SDavid Howells #else 2517926a79SDavid Howells #define CHECK_SLAB_OKAY(X) do {} while (0) 2617926a79SDavid Howells #endif 2717926a79SDavid Howells 2817926a79SDavid Howells #define FCRYPT_BSIZE 8 2917926a79SDavid Howells struct rxrpc_crypt { 3017926a79SDavid Howells union { 3117926a79SDavid Howells u8 x[FCRYPT_BSIZE]; 3291e916cfSAl Viro __be32 n[2]; 3317926a79SDavid Howells }; 3417926a79SDavid Howells } __attribute__((aligned(8))); 3517926a79SDavid Howells 36651350d1SDavid Howells #define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS)) 37651350d1SDavid Howells #define rxrpc_queue_delayed_work(WS,D) \ 38651350d1SDavid Howells queue_delayed_work(rxrpc_workqueue, (WS), (D)) 39651350d1SDavid Howells 40cc8feb8eSDavid Howells struct rxrpc_connection; 41cc8feb8eSDavid Howells 4217926a79SDavid Howells /* 43d001648eSDavid Howells * Mark applied to socket buffers. 44d001648eSDavid Howells */ 45d001648eSDavid Howells enum rxrpc_skb_mark { 46d001648eSDavid Howells RXRPC_SKB_MARK_DATA, /* data message */ 47d001648eSDavid Howells RXRPC_SKB_MARK_FINAL_ACK, /* final ACK received message */ 48d001648eSDavid Howells RXRPC_SKB_MARK_BUSY, /* server busy message */ 49d001648eSDavid Howells RXRPC_SKB_MARK_REMOTE_ABORT, /* remote abort message */ 50d001648eSDavid Howells RXRPC_SKB_MARK_LOCAL_ABORT, /* local abort message */ 51d001648eSDavid Howells RXRPC_SKB_MARK_NET_ERROR, /* network error message */ 52d001648eSDavid Howells RXRPC_SKB_MARK_LOCAL_ERROR, /* local error message */ 53d001648eSDavid Howells RXRPC_SKB_MARK_NEW_CALL, /* local error message */ 54d001648eSDavid Howells }; 55d001648eSDavid Howells 56d001648eSDavid Howells /* 5717926a79SDavid Howells * sk_state for RxRPC sockets 5817926a79SDavid Howells */ 5917926a79SDavid Howells enum { 602341e077SDavid Howells RXRPC_UNBOUND = 0, 612341e077SDavid Howells RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */ 6217926a79SDavid Howells RXRPC_CLIENT_BOUND, /* client local address bound */ 6317926a79SDavid Howells RXRPC_SERVER_BOUND, /* server local address bound */ 6428036f44SDavid Howells RXRPC_SERVER_BOUND2, /* second server local address bound */ 6517926a79SDavid Howells RXRPC_SERVER_LISTENING, /* server listening for connections */ 66210f0353SDavid Howells RXRPC_SERVER_LISTEN_DISABLED, /* server listening disabled */ 6717926a79SDavid Howells RXRPC_CLOSE, /* socket is being closed */ 6817926a79SDavid Howells }; 6917926a79SDavid Howells 7017926a79SDavid Howells /* 712baec2c3SDavid Howells * Per-network namespace data. 722baec2c3SDavid Howells */ 732baec2c3SDavid Howells struct rxrpc_net { 742baec2c3SDavid Howells struct proc_dir_entry *proc_net; /* Subdir in /proc/net */ 752baec2c3SDavid Howells u32 epoch; /* Local epoch for detecting local-end reset */ 762baec2c3SDavid Howells struct list_head calls; /* List of calls active in this namespace */ 772baec2c3SDavid Howells rwlock_t call_lock; /* Lock for ->calls */ 78d3be4d24SDavid Howells atomic_t nr_calls; /* Count of allocated calls */ 792baec2c3SDavid Howells 8031f5f9a1SDavid Howells atomic_t nr_conns; 812baec2c3SDavid Howells struct list_head conn_proc_list; /* List of conns in this namespace for proc */ 822baec2c3SDavid Howells struct list_head service_conns; /* Service conns in this namespace */ 832baec2c3SDavid Howells rwlock_t conn_lock; /* Lock for ->conn_proc_list, ->service_conns */ 843d18cbb7SDavid Howells struct work_struct service_conn_reaper; 853d18cbb7SDavid Howells struct timer_list service_conn_reap_timer; 862baec2c3SDavid Howells 872baec2c3SDavid Howells unsigned int nr_client_conns; 882baec2c3SDavid Howells unsigned int nr_active_client_conns; 892baec2c3SDavid Howells bool kill_all_client_conns; 90f859ab61SDavid Howells bool live; 912baec2c3SDavid Howells spinlock_t client_conn_cache_lock; /* Lock for ->*_client_conns */ 922baec2c3SDavid Howells spinlock_t client_conn_discard_lock; /* Prevent multiple discarders */ 932baec2c3SDavid Howells struct list_head waiting_client_conns; 942baec2c3SDavid Howells struct list_head active_client_conns; 952baec2c3SDavid Howells struct list_head idle_client_conns; 963d18cbb7SDavid Howells struct work_struct client_conn_reaper; 973d18cbb7SDavid Howells struct timer_list client_conn_reap_timer; 982baec2c3SDavid Howells 992baec2c3SDavid Howells struct list_head local_endpoints; 1002baec2c3SDavid Howells struct mutex local_mutex; /* Lock for ->local_endpoints */ 1012baec2c3SDavid Howells 1022baec2c3SDavid Howells DECLARE_HASHTABLE (peer_hash, 10); 103ace45becSDavid Howells spinlock_t peer_hash_lock; /* Lock for ->peer_hash */ 104ace45becSDavid Howells 105ace45becSDavid Howells #define RXRPC_KEEPALIVE_TIME 20 /* NAT keepalive time in seconds */ 106ace45becSDavid Howells u8 peer_keepalive_cursor; 107ace45becSDavid Howells ktime_t peer_keepalive_base; 108ace45becSDavid Howells struct hlist_head peer_keepalive[RXRPC_KEEPALIVE_TIME + 1]; 109ace45becSDavid Howells struct hlist_head peer_keepalive_new; 110ace45becSDavid Howells struct timer_list peer_keepalive_timer; 111ace45becSDavid Howells struct work_struct peer_keepalive_work; 1122baec2c3SDavid Howells }; 1132baec2c3SDavid Howells 1142baec2c3SDavid Howells /* 11500e90712SDavid Howells * Service backlog preallocation. 11600e90712SDavid Howells * 11700e90712SDavid Howells * This contains circular buffers of preallocated peers, connections and calls 11800e90712SDavid Howells * for incoming service calls and their head and tail pointers. This allows 11900e90712SDavid Howells * calls to be set up in the data_ready handler, thereby avoiding the need to 12000e90712SDavid Howells * shuffle packets around so much. 12100e90712SDavid Howells */ 12200e90712SDavid Howells struct rxrpc_backlog { 12300e90712SDavid Howells unsigned short peer_backlog_head; 12400e90712SDavid Howells unsigned short peer_backlog_tail; 12500e90712SDavid Howells unsigned short conn_backlog_head; 12600e90712SDavid Howells unsigned short conn_backlog_tail; 12700e90712SDavid Howells unsigned short call_backlog_head; 12800e90712SDavid Howells unsigned short call_backlog_tail; 12900e90712SDavid Howells #define RXRPC_BACKLOG_MAX 32 13000e90712SDavid Howells struct rxrpc_peer *peer_backlog[RXRPC_BACKLOG_MAX]; 13100e90712SDavid Howells struct rxrpc_connection *conn_backlog[RXRPC_BACKLOG_MAX]; 13200e90712SDavid Howells struct rxrpc_call *call_backlog[RXRPC_BACKLOG_MAX]; 13300e90712SDavid Howells }; 13400e90712SDavid Howells 13500e90712SDavid Howells /* 13617926a79SDavid Howells * RxRPC socket definition 13717926a79SDavid Howells */ 13817926a79SDavid Howells struct rxrpc_sock { 13917926a79SDavid Howells /* WARNING: sk has to be the first member */ 14017926a79SDavid Howells struct sock sk; 141d001648eSDavid Howells rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */ 14200e90712SDavid Howells rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */ 14317926a79SDavid Howells struct rxrpc_local *local; /* local endpoint */ 14400e90712SDavid Howells struct rxrpc_backlog *backlog; /* Preallocation for services */ 145248f219cSDavid Howells spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */ 146248f219cSDavid Howells struct list_head sock_calls; /* List of calls owned by this socket */ 147248f219cSDavid Howells struct list_head to_be_accepted; /* calls awaiting acceptance */ 148248f219cSDavid Howells struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */ 149248f219cSDavid Howells rwlock_t recvmsg_lock; /* Lock for recvmsg_q */ 15017926a79SDavid Howells struct key *key; /* security for this socket */ 15117926a79SDavid Howells struct key *securities; /* list of server security descriptors */ 15200e90712SDavid Howells struct rb_root calls; /* User ID -> call mapping */ 15317926a79SDavid Howells unsigned long flags; 1542341e077SDavid Howells #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ 15517926a79SDavid Howells rwlock_t call_lock; /* lock for calls */ 15617926a79SDavid Howells u32 min_sec_level; /* minimum security level */ 15717926a79SDavid Howells #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT 158cc8feb8eSDavid Howells bool exclusive; /* Exclusive connection for a client socket */ 15928036f44SDavid Howells u16 second_service; /* Additional service bound to the endpoint */ 1604722974dSDavid Howells struct { 1614722974dSDavid Howells /* Service upgrade information */ 1624722974dSDavid Howells u16 from; /* Service ID to upgrade (if not 0) */ 1634722974dSDavid Howells u16 to; /* service ID to upgrade to */ 1644722974dSDavid Howells } service_upgrade; 165cc8feb8eSDavid Howells sa_family_t family; /* Protocol family created with */ 1664722974dSDavid Howells struct sockaddr_rxrpc srx; /* Primary Service/local addresses */ 1672341e077SDavid Howells struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ 16817926a79SDavid Howells }; 16917926a79SDavid Howells 17017926a79SDavid Howells #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) 17117926a79SDavid Howells 17217926a79SDavid Howells /* 1730d12f8a4SDavid Howells * CPU-byteorder normalised Rx packet header. 1740d12f8a4SDavid Howells */ 1750d12f8a4SDavid Howells struct rxrpc_host_header { 1760d12f8a4SDavid Howells u32 epoch; /* client boot timestamp */ 1770d12f8a4SDavid Howells u32 cid; /* connection and channel ID */ 1780d12f8a4SDavid Howells u32 callNumber; /* call ID (0 for connection-level packets) */ 1790d12f8a4SDavid Howells u32 seq; /* sequence number of pkt in call stream */ 1800d12f8a4SDavid Howells u32 serial; /* serial number of pkt sent to network */ 1810d12f8a4SDavid Howells u8 type; /* packet type */ 1820d12f8a4SDavid Howells u8 flags; /* packet flags */ 1830d12f8a4SDavid Howells u8 userStatus; /* app-layer defined status */ 1840d12f8a4SDavid Howells u8 securityIndex; /* security protocol ID */ 1850d12f8a4SDavid Howells union { 1860d12f8a4SDavid Howells u16 _rsvd; /* reserved */ 1870d12f8a4SDavid Howells u16 cksum; /* kerberos security checksum */ 1880d12f8a4SDavid Howells }; 1890d12f8a4SDavid Howells u16 serviceId; /* service ID */ 1900d12f8a4SDavid Howells } __packed; 1910d12f8a4SDavid Howells 1920d12f8a4SDavid Howells /* 19317926a79SDavid Howells * RxRPC socket buffer private variables 19417926a79SDavid Howells * - max 48 bytes (struct sk_buff::cb) 19517926a79SDavid Howells */ 19617926a79SDavid Howells struct rxrpc_skb_priv { 197248f219cSDavid Howells union { 198248f219cSDavid Howells u8 nr_jumbo; /* Number of jumbo subpackets */ 199248f219cSDavid Howells }; 20017926a79SDavid Howells union { 20117926a79SDavid Howells int remain; /* amount of space remaining for next write */ 20217926a79SDavid Howells }; 20317926a79SDavid Howells 2040d12f8a4SDavid Howells struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ 20517926a79SDavid Howells }; 20617926a79SDavid Howells 20717926a79SDavid Howells #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) 20817926a79SDavid Howells 20917926a79SDavid Howells /* 21017926a79SDavid Howells * RxRPC security module interface 21117926a79SDavid Howells */ 21217926a79SDavid Howells struct rxrpc_security { 21317926a79SDavid Howells const char *name; /* name of this service */ 21417926a79SDavid Howells u8 security_index; /* security type provided */ 21517926a79SDavid Howells 216648af7fcSDavid Howells /* Initialise a security service */ 217648af7fcSDavid Howells int (*init)(void); 218648af7fcSDavid Howells 219648af7fcSDavid Howells /* Clean up a security service */ 220648af7fcSDavid Howells void (*exit)(void); 221648af7fcSDavid Howells 22217926a79SDavid Howells /* initialise a connection's security */ 22317926a79SDavid Howells int (*init_connection_security)(struct rxrpc_connection *); 22417926a79SDavid Howells 22517926a79SDavid Howells /* prime a connection's packet security */ 226a263629dSHerbert Xu int (*prime_packet_security)(struct rxrpc_connection *); 22717926a79SDavid Howells 22817926a79SDavid Howells /* impose security on a packet */ 229a263629dSHerbert Xu int (*secure_packet)(struct rxrpc_call *, 23017926a79SDavid Howells struct sk_buff *, 23117926a79SDavid Howells size_t, 23217926a79SDavid Howells void *); 23317926a79SDavid Howells 23417926a79SDavid Howells /* verify the security on a received packet */ 2355a42976dSDavid Howells int (*verify_packet)(struct rxrpc_call *, struct sk_buff *, 236248f219cSDavid Howells unsigned int, unsigned int, rxrpc_seq_t, u16); 237248f219cSDavid Howells 238248f219cSDavid Howells /* Locate the data in a received packet that has been verified. */ 239248f219cSDavid Howells void (*locate_data)(struct rxrpc_call *, struct sk_buff *, 240248f219cSDavid Howells unsigned int *, unsigned int *); 24117926a79SDavid Howells 24217926a79SDavid Howells /* issue a challenge */ 24317926a79SDavid Howells int (*issue_challenge)(struct rxrpc_connection *); 24417926a79SDavid Howells 24517926a79SDavid Howells /* respond to a challenge */ 24617926a79SDavid Howells int (*respond_to_challenge)(struct rxrpc_connection *, 24717926a79SDavid Howells struct sk_buff *, 24817926a79SDavid Howells u32 *); 24917926a79SDavid Howells 25017926a79SDavid Howells /* verify a response */ 25117926a79SDavid Howells int (*verify_response)(struct rxrpc_connection *, 25217926a79SDavid Howells struct sk_buff *, 25317926a79SDavid Howells u32 *); 25417926a79SDavid Howells 25517926a79SDavid Howells /* clear connection security */ 25617926a79SDavid Howells void (*clear)(struct rxrpc_connection *); 25717926a79SDavid Howells }; 25817926a79SDavid Howells 25917926a79SDavid Howells /* 2604f95dd78SDavid Howells * RxRPC local transport endpoint description 2614f95dd78SDavid Howells * - owned by a single AF_RXRPC socket 2624f95dd78SDavid Howells * - pointed to by transport socket struct sk_user_data 26317926a79SDavid Howells */ 26417926a79SDavid Howells struct rxrpc_local { 2654f95dd78SDavid Howells struct rcu_head rcu; 2664f95dd78SDavid Howells atomic_t usage; 2672baec2c3SDavid Howells struct rxrpc_net *rxnet; /* The network ns in which this resides */ 2684f95dd78SDavid Howells struct list_head link; 26917926a79SDavid Howells struct socket *socket; /* my UDP socket */ 2704f95dd78SDavid Howells struct work_struct processor; 2711e9e5c95SDavid Howells struct rxrpc_sock __rcu *service; /* Service(s) listening on this endpoint */ 27217926a79SDavid Howells struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ 27317926a79SDavid Howells struct sk_buff_head reject_queue; /* packets awaiting rejection */ 27444ba0698SDavid Howells struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */ 275999b69f8SDavid Howells struct rb_root client_conns; /* Client connections by socket params */ 276999b69f8SDavid Howells spinlock_t client_conns_lock; /* Lock for client_conns */ 27717926a79SDavid Howells spinlock_t lock; /* access lock */ 27817926a79SDavid Howells rwlock_t services_lock; /* lock for services list */ 27917926a79SDavid Howells int debug_id; /* debug ID for printks */ 2804f95dd78SDavid Howells bool dead; 281f859ab61SDavid Howells bool service_closed; /* Service socket closed */ 28217926a79SDavid Howells struct sockaddr_rxrpc srx; /* local address */ 28317926a79SDavid Howells }; 28417926a79SDavid Howells 28517926a79SDavid Howells /* 28617926a79SDavid Howells * RxRPC remote transport endpoint definition 287be6e6707SDavid Howells * - matched by local endpoint, remote port, address and protocol type 28817926a79SDavid Howells */ 28917926a79SDavid Howells struct rxrpc_peer { 290be6e6707SDavid Howells struct rcu_head rcu; /* This must be first */ 291be6e6707SDavid Howells atomic_t usage; 292be6e6707SDavid Howells unsigned long hash_key; 293be6e6707SDavid Howells struct hlist_node hash_link; 294be6e6707SDavid Howells struct rxrpc_local *local; 295f66d7490SDavid Howells struct hlist_head error_targets; /* targets for net error distribution */ 296f66d7490SDavid Howells struct work_struct error_distributor; 297aa390bbeSDavid Howells struct rb_root service_conns; /* Service connections */ 298ace45becSDavid Howells struct hlist_node keepalive_link; /* Link in net->peer_keepalive[] */ 299ace45becSDavid Howells time64_t last_tx_at; /* Last time packet sent here */ 3008496af50SDavid Howells seqlock_t service_conn_lock; 30117926a79SDavid Howells spinlock_t lock; /* access lock */ 30295c96174SEric Dumazet unsigned int if_mtu; /* interface MTU for this peer */ 30395c96174SEric Dumazet unsigned int mtu; /* network MTU for this peer */ 30495c96174SEric Dumazet unsigned int maxdata; /* data size (MTU - hdrsize) */ 30517926a79SDavid Howells unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ 30617926a79SDavid Howells int debug_id; /* debug ID for printks */ 307f66d7490SDavid Howells int error_report; /* Net (+0) or local (+1000000) to distribute */ 308f66d7490SDavid Howells #define RXRPC_LOCAL_ERROR_OFFSET 1000000 30917926a79SDavid Howells struct sockaddr_rxrpc srx; /* remote address */ 31017926a79SDavid Howells 31117926a79SDavid Howells /* calculated RTT cache */ 31217926a79SDavid Howells #define RXRPC_RTT_CACHE_SIZE 32 3130d4b103cSDavid Howells ktime_t rtt_last_req; /* Time of last RTT request */ 314cf1a6474SDavid Howells u64 rtt; /* Current RTT estimate (in nS) */ 315cf1a6474SDavid Howells u64 rtt_sum; /* Sum of cache contents */ 316cf1a6474SDavid Howells u64 rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* Determined RTT cache */ 317cf1a6474SDavid Howells u8 rtt_cursor; /* next entry at which to insert */ 318cf1a6474SDavid Howells u8 rtt_usage; /* amount of cache actually used */ 319f7aec129SDavid Howells 320f7aec129SDavid Howells u8 cong_cwnd; /* Congestion window size */ 32117926a79SDavid Howells }; 32217926a79SDavid Howells 32317926a79SDavid Howells /* 32419ffa01cSDavid Howells * Keys for matching a connection. 32519ffa01cSDavid Howells */ 32619ffa01cSDavid Howells struct rxrpc_conn_proto { 327e8d70ce1SDavid Howells union { 328e8d70ce1SDavid Howells struct { 32919ffa01cSDavid Howells u32 epoch; /* epoch of this connection */ 33019ffa01cSDavid Howells u32 cid; /* connection ID */ 331e8d70ce1SDavid Howells }; 332e8d70ce1SDavid Howells u64 index_key; 33319ffa01cSDavid Howells }; 33419ffa01cSDavid Howells }; 33519ffa01cSDavid Howells 33619ffa01cSDavid Howells struct rxrpc_conn_parameters { 33719ffa01cSDavid Howells struct rxrpc_local *local; /* Representation of local endpoint */ 33819ffa01cSDavid Howells struct rxrpc_peer *peer; /* Remote endpoint */ 33919ffa01cSDavid Howells struct key *key; /* Security details */ 34019ffa01cSDavid Howells bool exclusive; /* T if conn is exclusive */ 3414e255721SDavid Howells bool upgrade; /* T if service ID can be upgraded */ 34219ffa01cSDavid Howells u16 service_id; /* Service ID for this connection */ 34319ffa01cSDavid Howells u32 security_level; /* Security level selected */ 34419ffa01cSDavid Howells }; 34519ffa01cSDavid Howells 34619ffa01cSDavid Howells /* 347bba304dbSDavid Howells * Bits in the connection flags. 348bba304dbSDavid Howells */ 349bba304dbSDavid Howells enum rxrpc_conn_flag { 350bba304dbSDavid Howells RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ 351001c1122SDavid Howells RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ 352001c1122SDavid Howells RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */ 35345025bceSDavid Howells RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */ 35445025bceSDavid Howells RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ 35545025bceSDavid Howells RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */ 3564e255721SDavid Howells RXRPC_CONN_PROBING_FOR_UPGRADE, /* Probing for service upgrade */ 3573136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_0, /* Need final ACK for channel 0 */ 3583136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_1, /* Need final ACK for channel 1 */ 3593136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_2, /* Need final ACK for channel 2 */ 3603136ef49SDavid Howells RXRPC_CONN_FINAL_ACK_3, /* Need final ACK for channel 3 */ 361bba304dbSDavid Howells }; 362bba304dbSDavid Howells 3633136ef49SDavid Howells #define RXRPC_CONN_FINAL_ACK_MASK ((1UL << RXRPC_CONN_FINAL_ACK_0) | \ 3643136ef49SDavid Howells (1UL << RXRPC_CONN_FINAL_ACK_1) | \ 3653136ef49SDavid Howells (1UL << RXRPC_CONN_FINAL_ACK_2) | \ 3663136ef49SDavid Howells (1UL << RXRPC_CONN_FINAL_ACK_3)) 3673136ef49SDavid Howells 368bba304dbSDavid Howells /* 369bba304dbSDavid Howells * Events that can be raised upon a connection. 370bba304dbSDavid Howells */ 371bba304dbSDavid Howells enum rxrpc_conn_event { 372bba304dbSDavid Howells RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ 373bba304dbSDavid Howells }; 374bba304dbSDavid Howells 375bba304dbSDavid Howells /* 37645025bceSDavid Howells * The connection cache state. 37745025bceSDavid Howells */ 37845025bceSDavid Howells enum rxrpc_conn_cache_state { 37945025bceSDavid Howells RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */ 38045025bceSDavid Howells RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */ 38145025bceSDavid Howells RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */ 3824e255721SDavid Howells RXRPC_CONN_CLIENT_UPGRADE, /* Conn is on active list, probing for upgrade */ 38345025bceSDavid Howells RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */ 38445025bceSDavid Howells RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */ 385363deeabSDavid Howells RXRPC_CONN__NR_CACHE_STATES 38645025bceSDavid Howells }; 38745025bceSDavid Howells 38845025bceSDavid Howells /* 389bba304dbSDavid Howells * The connection protocol state. 390bba304dbSDavid Howells */ 391bba304dbSDavid Howells enum rxrpc_conn_proto_state { 392bba304dbSDavid Howells RXRPC_CONN_UNUSED, /* Connection not yet attempted */ 393bba304dbSDavid Howells RXRPC_CONN_CLIENT, /* Client connection */ 39400e90712SDavid Howells RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ 395bba304dbSDavid Howells RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ 396bba304dbSDavid Howells RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ 397bba304dbSDavid Howells RXRPC_CONN_SERVICE, /* Service secured connection */ 398bba304dbSDavid Howells RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */ 399bba304dbSDavid Howells RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */ 400bba304dbSDavid Howells RXRPC_CONN__NR_STATES 401bba304dbSDavid Howells }; 402bba304dbSDavid Howells 403bba304dbSDavid Howells /* 40417926a79SDavid Howells * RxRPC connection definition 405aa390bbeSDavid Howells * - matched by { local, peer, epoch, conn_id, direction } 40617926a79SDavid Howells * - each connection can only handle four simultaneous calls 40717926a79SDavid Howells */ 40817926a79SDavid Howells struct rxrpc_connection { 40919ffa01cSDavid Howells struct rxrpc_conn_proto proto; 41019ffa01cSDavid Howells struct rxrpc_conn_parameters params; 41119ffa01cSDavid Howells 41245025bceSDavid Howells atomic_t usage; 41345025bceSDavid Howells struct rcu_head rcu; 41445025bceSDavid Howells struct list_head cache_link; 415a1399f8bSDavid Howells 41645025bceSDavid Howells spinlock_t channel_lock; 41745025bceSDavid Howells unsigned char active_chans; /* Mask of active channels */ 41845025bceSDavid Howells #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1) 41945025bceSDavid Howells struct list_head waiting_calls; /* Calls waiting for channels */ 420a1399f8bSDavid Howells struct rxrpc_channel { 4213136ef49SDavid Howells unsigned long final_ack_at; /* Time at which to issue final ACK */ 422a1399f8bSDavid Howells struct rxrpc_call __rcu *call; /* Active call */ 423a1399f8bSDavid Howells u32 call_id; /* ID of current call */ 424a1399f8bSDavid Howells u32 call_counter; /* Call ID counter */ 425a1399f8bSDavid Howells u32 last_call; /* ID of last call */ 42618bfeba5SDavid Howells u8 last_type; /* Type of last packet */ 42718bfeba5SDavid Howells union { 42818bfeba5SDavid Howells u32 last_seq; 42918bfeba5SDavid Howells u32 last_abort; 43018bfeba5SDavid Howells }; 431a1399f8bSDavid Howells } channels[RXRPC_MAXCALLS]; 432999b69f8SDavid Howells 4333136ef49SDavid Howells struct timer_list timer; /* Conn event timer */ 43417926a79SDavid Howells struct work_struct processor; /* connection event processor */ 435999b69f8SDavid Howells union { 436999b69f8SDavid Howells struct rb_node client_node; /* Node in local->client_conns */ 437aa390bbeSDavid Howells struct rb_node service_node; /* Node in peer->service_conns */ 438999b69f8SDavid Howells }; 4394d028b2cSDavid Howells struct list_head proc_link; /* link in procfs list */ 44017926a79SDavid Howells struct list_head link; /* link in master connection list */ 44117926a79SDavid Howells struct sk_buff_head rx_queue; /* received conn-level packets */ 442648af7fcSDavid Howells const struct rxrpc_security *security; /* applied security module */ 44317926a79SDavid Howells struct key *server_key; /* security for this service */ 4441afe593bSHerbert Xu struct crypto_skcipher *cipher; /* encryption handle */ 44517926a79SDavid Howells struct rxrpc_crypt csum_iv; /* packet checksum base */ 4464a3388c8SDavid Howells unsigned long flags; 44717926a79SDavid Howells unsigned long events; 448f51b4480SDavid Howells unsigned long idle_timestamp; /* Time at which last became idle */ 44917926a79SDavid Howells spinlock_t state_lock; /* state-change lock */ 450cf13258fSDavid Howells enum rxrpc_conn_cache_state cache_state; 451cf13258fSDavid Howells enum rxrpc_conn_proto_state state; /* current state of connection */ 452dc44b3a0SDavid Howells u32 local_abort; /* local abort code */ 453dc44b3a0SDavid Howells u32 remote_abort; /* remote abort code */ 45417926a79SDavid Howells int debug_id; /* debug ID for printks */ 45517926a79SDavid Howells atomic_t serial; /* packet serial number counter */ 456563ea7d5SDavid Howells unsigned int hi_serial; /* highest serial number received */ 45717926a79SDavid Howells u32 security_nonce; /* response re-use preventer */ 45868d6d1aeSDavid Howells u16 service_id; /* Service ID, possibly upgraded */ 4595a924b89SDavid Howells u8 size_align; /* data size alignment (for security) */ 4605a924b89SDavid Howells u8 security_size; /* security header size */ 46117926a79SDavid Howells u8 security_ix; /* security type */ 46217926a79SDavid Howells u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ 46317926a79SDavid Howells }; 46417926a79SDavid Howells 46517926a79SDavid Howells /* 4665b8848d1SDavid Howells * Flags in call->flags. 4675b8848d1SDavid Howells */ 4685b8848d1SDavid Howells enum rxrpc_call_flag { 4695b8848d1SDavid Howells RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ 4705b8848d1SDavid Howells RXRPC_CALL_HAS_USERID, /* has a user ID attached */ 471dabe5a79SDavid Howells RXRPC_CALL_IS_SERVICE, /* Call is service call */ 47245025bceSDavid Howells RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ 473248f219cSDavid Howells RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ 474248f219cSDavid Howells RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ 475c038a58cSDavid Howells RXRPC_CALL_TX_LASTQ, /* Last packet has been queued */ 476a5af7e1fSDavid Howells RXRPC_CALL_SEND_PING, /* A ping will need to be sent */ 4778e83134dSDavid Howells RXRPC_CALL_PINGING, /* Ping in process */ 47857494343SDavid Howells RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */ 479c54e43d7SDavid Howells RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */ 4805b8848d1SDavid Howells }; 4815b8848d1SDavid Howells 4825b8848d1SDavid Howells /* 4835b8848d1SDavid Howells * Events that can be raised on a call. 4845b8848d1SDavid Howells */ 4855b8848d1SDavid Howells enum rxrpc_call_event { 4864c198ad1SDavid Howells RXRPC_CALL_EV_ACK, /* need to generate ACK */ 4874c198ad1SDavid Howells RXRPC_CALL_EV_ABORT, /* need to generate abort */ 4884c198ad1SDavid Howells RXRPC_CALL_EV_RESEND, /* Tx resend required */ 489a5af7e1fSDavid Howells RXRPC_CALL_EV_PING, /* Ping send required */ 490a158bdd3SDavid Howells RXRPC_CALL_EV_EXPIRED, /* Expiry occurred */ 491bd1fdf8cSDavid Howells RXRPC_CALL_EV_ACK_LOST, /* ACK may be lost, send ping */ 4925b8848d1SDavid Howells }; 4935b8848d1SDavid Howells 4945b8848d1SDavid Howells /* 4955b8848d1SDavid Howells * The states that a call can be in. 4965b8848d1SDavid Howells */ 4975b8848d1SDavid Howells enum rxrpc_call_state { 498999b69f8SDavid Howells RXRPC_CALL_UNINITIALISED, 499999b69f8SDavid Howells RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ 5005b8848d1SDavid Howells RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ 5015b8848d1SDavid Howells RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ 5025b8848d1SDavid Howells RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ 50300e90712SDavid Howells RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ 5045b8848d1SDavid Howells RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ 5055b8848d1SDavid Howells RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ 5065b8848d1SDavid Howells RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ 5075b8848d1SDavid Howells RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ 5085b8848d1SDavid Howells RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ 5095b8848d1SDavid Howells RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ 510f5c17aaeSDavid Howells RXRPC_CALL_COMPLETE, /* - call complete */ 511f5c17aaeSDavid Howells NR__RXRPC_CALL_STATES 512f5c17aaeSDavid Howells }; 513f5c17aaeSDavid Howells 514f5c17aaeSDavid Howells /* 51557494343SDavid Howells * Call Tx congestion management modes. 51657494343SDavid Howells */ 51757494343SDavid Howells enum rxrpc_congest_mode { 51857494343SDavid Howells RXRPC_CALL_SLOW_START, 51957494343SDavid Howells RXRPC_CALL_CONGEST_AVOIDANCE, 52057494343SDavid Howells RXRPC_CALL_PACKET_LOSS, 52157494343SDavid Howells RXRPC_CALL_FAST_RETRANSMIT, 52257494343SDavid Howells NR__RXRPC_CONGEST_MODES 52357494343SDavid Howells }; 52457494343SDavid Howells 52557494343SDavid Howells /* 52617926a79SDavid Howells * RxRPC call definition 52717926a79SDavid Howells * - matched by { connection, call_id } 52817926a79SDavid Howells */ 52917926a79SDavid Howells struct rxrpc_call { 530dee46364SDavid Howells struct rcu_head rcu; 53117926a79SDavid Howells struct rxrpc_connection *conn; /* connection carrying call */ 532df5d8bf7SDavid Howells struct rxrpc_peer *peer; /* Peer record for remote address */ 5338d94aa38SDavid Howells struct rxrpc_sock __rcu *socket; /* socket responsible */ 534d3be4d24SDavid Howells struct rxrpc_net *rxnet; /* Network namespace to which call belongs */ 535540b1c48SDavid Howells struct mutex user_mutex; /* User access mutex */ 536a158bdd3SDavid Howells unsigned long ack_at; /* When deferred ACK needs to happen */ 537bd1fdf8cSDavid Howells unsigned long ack_lost_at; /* When ACK is figured as lost */ 538a158bdd3SDavid Howells unsigned long resend_at; /* When next resend needs to happen */ 539a158bdd3SDavid Howells unsigned long ping_at; /* When next to send a ping */ 540415f44e4SDavid Howells unsigned long keepalive_at; /* When next to send a keepalive ping */ 541a158bdd3SDavid Howells unsigned long expect_rx_by; /* When we expect to get a packet by */ 542a158bdd3SDavid Howells unsigned long expect_req_by; /* When we expect to get a request DATA packet by */ 543a158bdd3SDavid Howells unsigned long expect_term_by; /* When we expect call termination by */ 544a158bdd3SDavid Howells u32 next_rx_timo; /* Timeout for next Rx packet (jif) */ 545a158bdd3SDavid Howells u32 next_req_timo; /* Timeout for next Rx request packet (jif) */ 546248f219cSDavid Howells struct timer_list timer; /* Combined event timer */ 547248f219cSDavid Howells struct work_struct processor; /* Event processor */ 548d001648eSDavid Howells rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ 54917926a79SDavid Howells struct list_head link; /* link in master call list */ 55045025bceSDavid Howells struct list_head chan_wait_link; /* Link in conn->waiting_calls */ 551f66d7490SDavid Howells struct hlist_node error_link; /* link in error distribution list */ 552248f219cSDavid Howells struct list_head accept_link; /* Link in rx->acceptq */ 553248f219cSDavid Howells struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ 554248f219cSDavid Howells struct list_head sock_link; /* Link in rx->sock_calls */ 555248f219cSDavid Howells struct rb_node sock_node; /* Node in rx->calls */ 55617926a79SDavid Howells struct sk_buff *tx_pending; /* Tx socket buffer being filled */ 55745025bceSDavid Howells wait_queue_head_t waitq; /* Wait queue for channel or Tx */ 558e754eba6SDavid Howells s64 tx_total_len; /* Total length left to be transmitted (or -1) */ 559a263629dSHerbert Xu __be32 crypto_buf[2]; /* Temporary packet crypto buffer */ 56017926a79SDavid Howells unsigned long user_call_ID; /* user-defined call ID */ 56117926a79SDavid Howells unsigned long flags; 56217926a79SDavid Howells unsigned long events; 56317926a79SDavid Howells spinlock_t lock; 56420acbd9aSDavid Howells spinlock_t notify_lock; /* Kernel notification lock */ 56517926a79SDavid Howells rwlock_t state_lock; /* lock for state transition */ 566f5c17aaeSDavid Howells u32 abort_code; /* Local/remote abort code */ 567f5c17aaeSDavid Howells int error; /* Local error incurred */ 568cf13258fSDavid Howells enum rxrpc_call_state state; /* current state of call */ 569cf13258fSDavid Howells enum rxrpc_call_completion completion; /* Call completion condition */ 57017926a79SDavid Howells atomic_t usage; 571dabe5a79SDavid Howells u16 service_id; /* service ID */ 572278ac0cdSDavid Howells u8 security_ix; /* Security type */ 573dabe5a79SDavid Howells u32 call_id; /* call ID on connection */ 574dabe5a79SDavid Howells u32 cid; /* connection ID plus channel index */ 575dabe5a79SDavid Howells int debug_id; /* debug ID for printks */ 5768e83134dSDavid Howells unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ 5778e83134dSDavid Howells unsigned short rx_pkt_len; /* Current recvmsg packet len */ 57817926a79SDavid Howells 579248f219cSDavid Howells /* Rx/Tx circular buffer, depending on phase. 580248f219cSDavid Howells * 581248f219cSDavid Howells * In the Rx phase, packets are annotated with 0 or the number of the 582248f219cSDavid Howells * segment of a jumbo packet each buffer refers to. There can be up to 583248f219cSDavid Howells * 47 segments in a maximum-size UDP packet. 584248f219cSDavid Howells * 585248f219cSDavid Howells * In the Tx phase, packets are annotated with which buffers have been 586248f219cSDavid Howells * acked. 58717926a79SDavid Howells */ 588248f219cSDavid Howells #define RXRPC_RXTX_BUFF_SIZE 64 589248f219cSDavid Howells #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1) 59075e42126SDavid Howells #define RXRPC_INIT_RX_WINDOW_SIZE 32 591248f219cSDavid Howells struct sk_buff **rxtx_buffer; 592248f219cSDavid Howells u8 *rxtx_annotations; 593248f219cSDavid Howells #define RXRPC_TX_ANNO_ACK 0 594248f219cSDavid Howells #define RXRPC_TX_ANNO_UNACK 1 595248f219cSDavid Howells #define RXRPC_TX_ANNO_NAK 2 596248f219cSDavid Howells #define RXRPC_TX_ANNO_RETRANS 3 597f07373eaSDavid Howells #define RXRPC_TX_ANNO_MASK 0x03 59870790dbeSDavid Howells #define RXRPC_TX_ANNO_LAST 0x04 59970790dbeSDavid Howells #define RXRPC_TX_ANNO_RESENT 0x08 60070790dbeSDavid Howells 601248f219cSDavid Howells #define RXRPC_RX_ANNO_JUMBO 0x3f /* Jumbo subpacket number + 1 if not zero */ 602248f219cSDavid Howells #define RXRPC_RX_ANNO_JLAST 0x40 /* Set if last element of a jumbo packet */ 603248f219cSDavid Howells #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ 604248f219cSDavid Howells rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but 605248f219cSDavid Howells * not hard-ACK'd packet follows this. 606248f219cSDavid Howells */ 607248f219cSDavid Howells rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ 60857494343SDavid Howells 60957494343SDavid Howells /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS 61057494343SDavid Howells * is fixed, we keep these numbers in terms of segments (ie. DATA 61157494343SDavid Howells * packets) rather than bytes. 61257494343SDavid Howells */ 61357494343SDavid Howells #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN 61457494343SDavid Howells u8 cong_cwnd; /* Congestion window size */ 61557494343SDavid Howells u8 cong_extra; /* Extra to send for congestion management */ 61657494343SDavid Howells u8 cong_ssthresh; /* Slow-start threshold */ 61757494343SDavid Howells enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */ 61857494343SDavid Howells u8 cong_dup_acks; /* Count of ACKs showing missing packets */ 61957494343SDavid Howells u8 cong_cumul_acks; /* Cumulative ACK count */ 62057494343SDavid Howells ktime_t cong_tstamp; /* Last time cwnd was changed */ 62157494343SDavid Howells 622248f219cSDavid Howells rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not 623248f219cSDavid Howells * consumed packet follows this. 624248f219cSDavid Howells */ 625248f219cSDavid Howells rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */ 626248f219cSDavid Howells rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */ 627248f219cSDavid Howells u8 rx_winsize; /* Size of Rx window */ 628248f219cSDavid Howells u8 tx_winsize; /* Maximum size of Tx window */ 62971f3ca40SDavid Howells bool tx_phase; /* T if transmission phase, F if receive phase */ 63075e42126SDavid Howells u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */ 63117926a79SDavid Howells 63217926a79SDavid Howells /* receive-phase ACK management */ 6334e36a95eSDavid Howells u8 ackr_reason; /* reason to ACK */ 634563ea7d5SDavid Howells u16 ackr_skew; /* skew on packet being ACK'd */ 6350d12f8a4SDavid Howells rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ 636248f219cSDavid Howells rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ 637805b21b9SDavid Howells rxrpc_seq_t ackr_consumed; /* Highest packet shown consumed */ 638805b21b9SDavid Howells rxrpc_seq_t ackr_seen; /* Highest packet shown seen */ 639a5af7e1fSDavid Howells 640a5af7e1fSDavid Howells /* ping management */ 641a5af7e1fSDavid Howells rxrpc_serial_t ping_serial; /* Last ping sent */ 642a5af7e1fSDavid Howells ktime_t ping_time; /* Time last ping sent */ 64317926a79SDavid Howells 644248f219cSDavid Howells /* transmission-phase ACK management */ 64557494343SDavid Howells ktime_t acks_latest_ts; /* Timestamp of latest ACK received */ 646248f219cSDavid Howells rxrpc_serial_t acks_latest; /* serial number of latest ACK received */ 64731a1b989SDavid Howells rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */ 648bd1fdf8cSDavid Howells rxrpc_seq_t acks_lost_top; /* tx_top at the time lost-ack ping sent */ 649bd1fdf8cSDavid Howells rxrpc_serial_t acks_lost_ping; /* Serial number of probe ACK */ 65031a1b989SDavid Howells }; 65131a1b989SDavid Howells 65231a1b989SDavid Howells /* 65357494343SDavid Howells * Summary of a new ACK and the changes it made to the Tx buffer packet states. 65431a1b989SDavid Howells */ 65531a1b989SDavid Howells struct rxrpc_ack_summary { 65631a1b989SDavid Howells u8 ack_reason; 65731a1b989SDavid Howells u8 nr_acks; /* Number of ACKs in packet */ 65831a1b989SDavid Howells u8 nr_nacks; /* Number of NACKs in packet */ 65931a1b989SDavid Howells u8 nr_new_acks; /* Number of new ACKs in packet */ 66031a1b989SDavid Howells u8 nr_new_nacks; /* Number of new NACKs in packet */ 66131a1b989SDavid Howells u8 nr_rot_new_acks; /* Number of rotated new ACKs */ 66231a1b989SDavid Howells bool new_low_nack; /* T if new low NACK found */ 66357494343SDavid Howells bool retrans_timeo; /* T if reTx due to timeout happened */ 66457494343SDavid Howells u8 flight_size; /* Number of unreceived transmissions */ 66557494343SDavid Howells /* Place to stash values for tracing */ 66657494343SDavid Howells enum rxrpc_congest_mode mode:8; 66757494343SDavid Howells u8 cwnd; 66857494343SDavid Howells u8 ssthresh; 66957494343SDavid Howells u8 dup_acks; 67057494343SDavid Howells u8 cumulative_acks; 67117926a79SDavid Howells }; 67217926a79SDavid Howells 67348124178SDavid Howells /* 67448124178SDavid Howells * sendmsg() cmsg-specified parameters. 67548124178SDavid Howells */ 67648124178SDavid Howells enum rxrpc_command { 67748124178SDavid Howells RXRPC_CMD_SEND_DATA, /* send data message */ 67848124178SDavid Howells RXRPC_CMD_SEND_ABORT, /* request abort generation */ 67948124178SDavid Howells RXRPC_CMD_ACCEPT, /* [server] accept incoming call */ 68048124178SDavid Howells RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */ 68148124178SDavid Howells }; 68248124178SDavid Howells 68348124178SDavid Howells struct rxrpc_call_params { 68448124178SDavid Howells s64 tx_total_len; /* Total Tx data length (if send data) */ 68548124178SDavid Howells unsigned long user_call_ID; /* User's call ID */ 68648124178SDavid Howells struct { 68748124178SDavid Howells u32 hard; /* Maximum lifetime (sec) */ 68848124178SDavid Howells u32 idle; /* Max time since last data packet (msec) */ 68948124178SDavid Howells u32 normal; /* Max time since last call packet (msec) */ 69048124178SDavid Howells } timeouts; 69148124178SDavid Howells u8 nr_timeouts; /* Number of timeouts specified */ 69248124178SDavid Howells }; 69348124178SDavid Howells 69448124178SDavid Howells struct rxrpc_send_params { 69548124178SDavid Howells struct rxrpc_call_params call; 69648124178SDavid Howells u32 abort_code; /* Abort code to Tx (if abort) */ 69748124178SDavid Howells enum rxrpc_command command : 8; /* The command to implement */ 69848124178SDavid Howells bool exclusive; /* Shared or exclusive call */ 69948124178SDavid Howells bool upgrade; /* If the connection is upgradeable */ 70048124178SDavid Howells }; 70148124178SDavid Howells 702df844fd4SDavid Howells #include <trace/events/rxrpc.h> 703df844fd4SDavid Howells 70417926a79SDavid Howells /* 705651350d1SDavid Howells * af_rxrpc.c 70617926a79SDavid Howells */ 70771f3ca40SDavid Howells extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs; 708651350d1SDavid Howells extern struct workqueue_struct *rxrpc_workqueue; 70917926a79SDavid Howells 71017926a79SDavid Howells /* 7110d81a51aSDavid Howells * call_accept.c 71217926a79SDavid Howells */ 71300e90712SDavid Howells int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); 71400e90712SDavid Howells void rxrpc_discard_prealloc(struct rxrpc_sock *); 715248f219cSDavid Howells struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *, 716248f219cSDavid Howells struct rxrpc_connection *, 717248f219cSDavid Howells struct sk_buff *); 7184f95dd78SDavid Howells void rxrpc_accept_incoming_calls(struct rxrpc_local *); 719d001648eSDavid Howells struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long, 720d001648eSDavid Howells rxrpc_notify_rx_t); 721c1b1203dSJoe Perches int rxrpc_reject_call(struct rxrpc_sock *); 72217926a79SDavid Howells 72317926a79SDavid Howells /* 7240d81a51aSDavid Howells * call_event.c 72517926a79SDavid Howells */ 7269c7ad434SDavid Howells void rxrpc_propose_ACK(struct rxrpc_call *, u8, u16, u32, bool, bool, 7279c7ad434SDavid Howells enum rxrpc_propose_ack_trace); 728c1b1203dSJoe Perches void rxrpc_process_call(struct work_struct *); 72917926a79SDavid Howells 730a158bdd3SDavid Howells static inline void rxrpc_reduce_call_timer(struct rxrpc_call *call, 731a158bdd3SDavid Howells unsigned long expire_at, 732a158bdd3SDavid Howells unsigned long now, 733a158bdd3SDavid Howells enum rxrpc_timer_trace why) 734a158bdd3SDavid Howells { 735a158bdd3SDavid Howells trace_rxrpc_timer(call, why, now); 736a158bdd3SDavid Howells timer_reduce(&call->timer, expire_at); 737a158bdd3SDavid Howells } 738a158bdd3SDavid Howells 73917926a79SDavid Howells /* 7400d81a51aSDavid Howells * call_object.c 74117926a79SDavid Howells */ 742f5c17aaeSDavid Howells extern const char *const rxrpc_call_states[]; 743f5c17aaeSDavid Howells extern const char *const rxrpc_call_completions[]; 744dad8aff7SDavid Howells extern unsigned int rxrpc_max_call_lifetime; 74517926a79SDavid Howells extern struct kmem_cache *rxrpc_call_jar; 74617926a79SDavid Howells 7472341e077SDavid Howells struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); 748a25e21f0SDavid Howells struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *, gfp_t, unsigned int); 7492341e077SDavid Howells struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, 75019ffa01cSDavid Howells struct rxrpc_conn_parameters *, 751999b69f8SDavid Howells struct sockaddr_rxrpc *, 752a25e21f0SDavid Howells struct rxrpc_call_params *, gfp_t, 753a25e21f0SDavid Howells unsigned int); 754c038a58cSDavid Howells int rxrpc_retry_client_call(struct rxrpc_sock *, 755c038a58cSDavid Howells struct rxrpc_call *, 756c038a58cSDavid Howells struct rxrpc_conn_parameters *, 757c038a58cSDavid Howells struct sockaddr_rxrpc *, 758c038a58cSDavid Howells gfp_t); 759248f219cSDavid Howells void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, 76042886ffeSDavid Howells struct sk_buff *); 7618d94aa38SDavid Howells void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); 762c038a58cSDavid Howells int rxrpc_prepare_call_for_retry(struct rxrpc_sock *, struct rxrpc_call *); 763c1b1203dSJoe Perches void rxrpc_release_calls_on_socket(struct rxrpc_sock *); 7648d94aa38SDavid Howells bool __rxrpc_queue_call(struct rxrpc_call *); 7658d94aa38SDavid Howells bool rxrpc_queue_call(struct rxrpc_call *); 766e34d4234SDavid Howells void rxrpc_see_call(struct rxrpc_call *); 767fff72429SDavid Howells void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 768fff72429SDavid Howells void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); 76900e90712SDavid Howells void rxrpc_cleanup_call(struct rxrpc_call *); 7702baec2c3SDavid Howells void rxrpc_destroy_all_calls(struct rxrpc_net *); 77117926a79SDavid Howells 772dabe5a79SDavid Howells static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) 773dabe5a79SDavid Howells { 774dabe5a79SDavid Howells return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); 775dabe5a79SDavid Howells } 776dabe5a79SDavid Howells 777dabe5a79SDavid Howells static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) 778dabe5a79SDavid Howells { 779dabe5a79SDavid Howells return !rxrpc_is_service_call(call); 780dabe5a79SDavid Howells } 781dabe5a79SDavid Howells 78217926a79SDavid Howells /* 783f5c17aaeSDavid Howells * Transition a call to the complete state. 784f5c17aaeSDavid Howells */ 785f5c17aaeSDavid Howells static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call, 786f5c17aaeSDavid Howells enum rxrpc_call_completion compl, 787f5c17aaeSDavid Howells u32 abort_code, 788f5c17aaeSDavid Howells int error) 789f5c17aaeSDavid Howells { 790f5c17aaeSDavid Howells if (call->state < RXRPC_CALL_COMPLETE) { 791f5c17aaeSDavid Howells call->abort_code = abort_code; 792f5c17aaeSDavid Howells call->error = error; 793f5c17aaeSDavid Howells call->completion = compl, 794f5c17aaeSDavid Howells call->state = RXRPC_CALL_COMPLETE; 7951bae5d22SDavid Howells trace_rxrpc_call_complete(call); 796c0d058c2SDavid Howells wake_up(&call->waitq); 797f5c17aaeSDavid Howells return true; 798f5c17aaeSDavid Howells } 799f5c17aaeSDavid Howells return false; 800f5c17aaeSDavid Howells } 801f5c17aaeSDavid Howells 802f5c17aaeSDavid Howells static inline bool rxrpc_set_call_completion(struct rxrpc_call *call, 803f5c17aaeSDavid Howells enum rxrpc_call_completion compl, 804f5c17aaeSDavid Howells u32 abort_code, 805f5c17aaeSDavid Howells int error) 806f5c17aaeSDavid Howells { 807e8d6bbb0SDavid Howells bool ret; 808f5c17aaeSDavid Howells 809f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 810f5c17aaeSDavid Howells ret = __rxrpc_set_call_completion(call, compl, abort_code, error); 811f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 812f5c17aaeSDavid Howells return ret; 813f5c17aaeSDavid Howells } 814f5c17aaeSDavid Howells 815f5c17aaeSDavid Howells /* 816f5c17aaeSDavid Howells * Record that a call successfully completed. 817f5c17aaeSDavid Howells */ 818e8d6bbb0SDavid Howells static inline bool __rxrpc_call_completed(struct rxrpc_call *call) 819f5c17aaeSDavid Howells { 820e8d6bbb0SDavid Howells return __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0); 821f5c17aaeSDavid Howells } 822f5c17aaeSDavid Howells 823e8d6bbb0SDavid Howells static inline bool rxrpc_call_completed(struct rxrpc_call *call) 824f5c17aaeSDavid Howells { 825e8d6bbb0SDavid Howells bool ret; 826e8d6bbb0SDavid Howells 827f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 828e8d6bbb0SDavid Howells ret = __rxrpc_call_completed(call); 829f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 830e8d6bbb0SDavid Howells return ret; 831f5c17aaeSDavid Howells } 832f5c17aaeSDavid Howells 833f5c17aaeSDavid Howells /* 834f5c17aaeSDavid Howells * Record that a call is locally aborted. 835f5c17aaeSDavid Howells */ 8365a42976dSDavid Howells static inline bool __rxrpc_abort_call(const char *why, struct rxrpc_call *call, 8375a42976dSDavid Howells rxrpc_seq_t seq, 838f5c17aaeSDavid Howells u32 abort_code, int error) 839f5c17aaeSDavid Howells { 840a25e21f0SDavid Howells trace_rxrpc_abort(call->debug_id, why, call->cid, call->call_id, seq, 8415a42976dSDavid Howells abort_code, error); 842248f219cSDavid Howells return __rxrpc_set_call_completion(call, RXRPC_CALL_LOCALLY_ABORTED, 843248f219cSDavid Howells abort_code, error); 844f5c17aaeSDavid Howells } 845f5c17aaeSDavid Howells 8465a42976dSDavid Howells static inline bool rxrpc_abort_call(const char *why, struct rxrpc_call *call, 8475a42976dSDavid Howells rxrpc_seq_t seq, u32 abort_code, int error) 848f5c17aaeSDavid Howells { 849f5c17aaeSDavid Howells bool ret; 850f5c17aaeSDavid Howells 851f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 8525a42976dSDavid Howells ret = __rxrpc_abort_call(why, call, seq, abort_code, error); 853f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 854f5c17aaeSDavid Howells return ret; 855f5c17aaeSDavid Howells } 856f5c17aaeSDavid Howells 857f5c17aaeSDavid Howells /* 858fb46f6eeSDavid Howells * Abort a call due to a protocol error. 859fb46f6eeSDavid Howells */ 860fb46f6eeSDavid Howells static inline bool __rxrpc_abort_eproto(struct rxrpc_call *call, 861fb46f6eeSDavid Howells struct sk_buff *skb, 862fb46f6eeSDavid Howells const char *eproto_why, 863fb46f6eeSDavid Howells const char *why, 864fb46f6eeSDavid Howells u32 abort_code) 865fb46f6eeSDavid Howells { 866fb46f6eeSDavid Howells struct rxrpc_skb_priv *sp = rxrpc_skb(skb); 867fb46f6eeSDavid Howells 868fb46f6eeSDavid Howells trace_rxrpc_rx_eproto(call, sp->hdr.serial, eproto_why); 869fb46f6eeSDavid Howells return rxrpc_abort_call(why, call, sp->hdr.seq, abort_code, -EPROTO); 870fb46f6eeSDavid Howells } 871fb46f6eeSDavid Howells 872fb46f6eeSDavid Howells #define rxrpc_abort_eproto(call, skb, eproto_why, abort_why, abort_code) \ 873fb46f6eeSDavid Howells __rxrpc_abort_eproto((call), (skb), tracepoint_string(eproto_why), \ 874fb46f6eeSDavid Howells (abort_why), (abort_code)) 875fb46f6eeSDavid Howells 876fb46f6eeSDavid Howells /* 8774a3388c8SDavid Howells * conn_client.c 8784a3388c8SDavid Howells */ 87945025bceSDavid Howells extern unsigned int rxrpc_max_client_connections; 88045025bceSDavid Howells extern unsigned int rxrpc_reap_client_connections; 881a158bdd3SDavid Howells extern unsigned long rxrpc_conn_idle_client_expiry; 882a158bdd3SDavid Howells extern unsigned long rxrpc_conn_idle_client_fast_expiry; 8834a3388c8SDavid Howells extern struct idr rxrpc_client_conn_ids; 8844a3388c8SDavid Howells 885eb9b9d22SDavid Howells void rxrpc_destroy_client_conn_ids(void); 886c6d2b8d7SDavid Howells int rxrpc_connect_call(struct rxrpc_call *, struct rxrpc_conn_parameters *, 887c6d2b8d7SDavid Howells struct sockaddr_rxrpc *, gfp_t); 88845025bceSDavid Howells void rxrpc_expose_client_call(struct rxrpc_call *); 88945025bceSDavid Howells void rxrpc_disconnect_client_call(struct rxrpc_call *); 89045025bceSDavid Howells void rxrpc_put_client_conn(struct rxrpc_connection *); 8912baec2c3SDavid Howells void rxrpc_discard_expired_client_conns(struct work_struct *); 8922baec2c3SDavid Howells void rxrpc_destroy_all_client_connections(struct rxrpc_net *); 8934a3388c8SDavid Howells 8944a3388c8SDavid Howells /* 8950d81a51aSDavid Howells * conn_event.c 8960d81a51aSDavid Howells */ 8970d81a51aSDavid Howells void rxrpc_process_connection(struct work_struct *); 8980d81a51aSDavid Howells 8990d81a51aSDavid Howells /* 9000d81a51aSDavid Howells * conn_object.c 90117926a79SDavid Howells */ 902dad8aff7SDavid Howells extern unsigned int rxrpc_connection_expiry; 903f859ab61SDavid Howells extern unsigned int rxrpc_closed_conn_expiry; 90417926a79SDavid Howells 905c6d2b8d7SDavid Howells struct rxrpc_connection *rxrpc_alloc_connection(gfp_t); 9068496af50SDavid Howells struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *, 907aa390bbeSDavid Howells struct sk_buff *); 90845025bceSDavid Howells void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); 909999b69f8SDavid Howells void rxrpc_disconnect_call(struct rxrpc_call *); 91045025bceSDavid Howells void rxrpc_kill_connection(struct rxrpc_connection *); 911363deeabSDavid Howells bool rxrpc_queue_conn(struct rxrpc_connection *); 912363deeabSDavid Howells void rxrpc_see_connection(struct rxrpc_connection *); 913363deeabSDavid Howells void rxrpc_get_connection(struct rxrpc_connection *); 914363deeabSDavid Howells struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *); 915363deeabSDavid Howells void rxrpc_put_service_conn(struct rxrpc_connection *); 9162baec2c3SDavid Howells void rxrpc_service_connection_reaper(struct work_struct *); 9172baec2c3SDavid Howells void rxrpc_destroy_all_connections(struct rxrpc_net *); 91817926a79SDavid Howells 91919ffa01cSDavid Howells static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) 92019ffa01cSDavid Howells { 92119ffa01cSDavid Howells return conn->out_clientflag; 92219ffa01cSDavid Howells } 92319ffa01cSDavid Howells 92419ffa01cSDavid Howells static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) 92519ffa01cSDavid Howells { 926e8d70ce1SDavid Howells return !rxrpc_conn_is_client(conn); 92719ffa01cSDavid Howells } 92819ffa01cSDavid Howells 929f51b4480SDavid Howells static inline void rxrpc_put_connection(struct rxrpc_connection *conn) 930f51b4480SDavid Howells { 93145025bceSDavid Howells if (!conn) 93245025bceSDavid Howells return; 93345025bceSDavid Howells 934363deeabSDavid Howells if (rxrpc_conn_is_client(conn)) 93545025bceSDavid Howells rxrpc_put_client_conn(conn); 936363deeabSDavid Howells else 937363deeabSDavid Howells rxrpc_put_service_conn(conn); 9385acbee46SDavid Howells } 9395acbee46SDavid Howells 9403136ef49SDavid Howells static inline void rxrpc_reduce_conn_timer(struct rxrpc_connection *conn, 9413136ef49SDavid Howells unsigned long expire_at) 9423136ef49SDavid Howells { 9433136ef49SDavid Howells timer_reduce(&conn->timer, expire_at); 9443136ef49SDavid Howells } 9453136ef49SDavid Howells 94617926a79SDavid Howells /* 9477877a4a4SDavid Howells * conn_service.c 9487877a4a4SDavid Howells */ 9498496af50SDavid Howells struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, 9508496af50SDavid Howells struct sk_buff *); 9512baec2c3SDavid Howells struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t); 9524722974dSDavid Howells void rxrpc_new_incoming_connection(struct rxrpc_sock *, 9534722974dSDavid Howells struct rxrpc_connection *, struct sk_buff *); 954001c1122SDavid Howells void rxrpc_unpublish_service_conn(struct rxrpc_connection *); 9557877a4a4SDavid Howells 9567877a4a4SDavid Howells /* 9570d81a51aSDavid Howells * input.c 95817926a79SDavid Howells */ 959676d2369SDavid S. Miller void rxrpc_data_ready(struct sock *); 96017926a79SDavid Howells 96117926a79SDavid Howells /* 9620d81a51aSDavid Howells * insecure.c 96317926a79SDavid Howells */ 9640d81a51aSDavid Howells extern const struct rxrpc_security rxrpc_no_security; 96517926a79SDavid Howells 96617926a79SDavid Howells /* 9670d81a51aSDavid Howells * key.c 96817926a79SDavid Howells */ 96917926a79SDavid Howells extern struct key_type key_type_rxrpc; 97017926a79SDavid Howells extern struct key_type key_type_rxrpc_s; 97117926a79SDavid Howells 972c1b1203dSJoe Perches int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); 973c1b1203dSJoe Perches int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); 97410674a03SBaolin Wang int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t, 975c1b1203dSJoe Perches u32); 97617926a79SDavid Howells 97717926a79SDavid Howells /* 97887563616SDavid Howells * local_event.c 97987563616SDavid Howells */ 9804f95dd78SDavid Howells extern void rxrpc_process_local_events(struct rxrpc_local *); 98187563616SDavid Howells 98287563616SDavid Howells /* 9830d81a51aSDavid Howells * local_object.c 98417926a79SDavid Howells */ 9852baec2c3SDavid Howells struct rxrpc_local *rxrpc_lookup_local(struct net *, const struct sockaddr_rxrpc *); 98609d2bf59SDavid Howells struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *); 98709d2bf59SDavid Howells struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *); 98809d2bf59SDavid Howells void rxrpc_put_local(struct rxrpc_local *); 98909d2bf59SDavid Howells void rxrpc_queue_local(struct rxrpc_local *); 9902baec2c3SDavid Howells void rxrpc_destroy_all_locals(struct rxrpc_net *); 991e0e4d82fSDavid Howells 992e0e4d82fSDavid Howells /* 9938e688d9cSDavid Howells * misc.c 9948e688d9cSDavid Howells */ 9950e119b41SDavid Howells extern unsigned int rxrpc_max_backlog __read_mostly; 996a158bdd3SDavid Howells extern unsigned long rxrpc_requested_ack_delay; 997a158bdd3SDavid Howells extern unsigned long rxrpc_soft_ack_delay; 998a158bdd3SDavid Howells extern unsigned long rxrpc_idle_ack_delay; 9998e688d9cSDavid Howells extern unsigned int rxrpc_rx_window_size; 10008e688d9cSDavid Howells extern unsigned int rxrpc_rx_mtu; 10018e688d9cSDavid Howells extern unsigned int rxrpc_rx_jumbo_max; 1002a158bdd3SDavid Howells extern unsigned long rxrpc_resend_timeout; 10038e688d9cSDavid Howells 10048e688d9cSDavid Howells extern const s8 rxrpc_ack_priority[]; 10058e688d9cSDavid Howells 10068e688d9cSDavid Howells /* 10072baec2c3SDavid Howells * net_ns.c 10082baec2c3SDavid Howells */ 10092baec2c3SDavid Howells extern unsigned int rxrpc_net_id; 10102baec2c3SDavid Howells extern struct pernet_operations rxrpc_net_ops; 10112baec2c3SDavid Howells 10122baec2c3SDavid Howells static inline struct rxrpc_net *rxrpc_net(struct net *net) 10132baec2c3SDavid Howells { 10142baec2c3SDavid Howells return net_generic(net, rxrpc_net_id); 10152baec2c3SDavid Howells } 10162baec2c3SDavid Howells 10172baec2c3SDavid Howells /* 10180d81a51aSDavid Howells * output.c 10190d81a51aSDavid Howells */ 1020bd1fdf8cSDavid Howells int rxrpc_send_ack_packet(struct rxrpc_call *, bool, rxrpc_serial_t *); 102126cb02aaSDavid Howells int rxrpc_send_abort_packet(struct rxrpc_call *); 1022a1767077SDavid Howells int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *, bool); 1023248f219cSDavid Howells void rxrpc_reject_packets(struct rxrpc_local *); 1024ace45becSDavid Howells void rxrpc_send_keepalive(struct rxrpc_peer *); 10250d81a51aSDavid Howells 10260d81a51aSDavid Howells /* 1027abe89ef0SDavid Howells * peer_event.c 10280d81a51aSDavid Howells */ 1029abe89ef0SDavid Howells void rxrpc_error_report(struct sock *); 1030f66d7490SDavid Howells void rxrpc_peer_error_distributor(struct work_struct *); 1031cf1a6474SDavid Howells void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, 1032cf1a6474SDavid Howells rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); 1033ace45becSDavid Howells void rxrpc_peer_keepalive_worker(struct work_struct *); 10340d81a51aSDavid Howells 10350d81a51aSDavid Howells /* 10360d81a51aSDavid Howells * peer_object.c 10370d81a51aSDavid Howells */ 1038be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, 1039be6e6707SDavid Howells const struct sockaddr_rxrpc *); 1040be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *, 1041be6e6707SDavid Howells struct sockaddr_rxrpc *, gfp_t); 1042be6e6707SDavid Howells struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); 1043248f219cSDavid Howells struct rxrpc_peer *rxrpc_lookup_incoming_peer(struct rxrpc_local *, 1044248f219cSDavid Howells struct rxrpc_peer *); 104517226f12SDavid Howells void rxrpc_destroy_all_peers(struct rxrpc_net *); 10461159d4b4SDavid Howells struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *); 10471159d4b4SDavid Howells struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *); 10481159d4b4SDavid Howells void rxrpc_put_peer(struct rxrpc_peer *); 10491159d4b4SDavid Howells void __rxrpc_queue_peer_error(struct rxrpc_peer *); 10500d81a51aSDavid Howells 10510d81a51aSDavid Howells /* 10520d81a51aSDavid Howells * proc.c 10530d81a51aSDavid Howells */ 1054c3506372SChristoph Hellwig extern const struct seq_operations rxrpc_call_seq_ops; 1055c3506372SChristoph Hellwig extern const struct seq_operations rxrpc_connection_seq_ops; 10560d81a51aSDavid Howells 10570d81a51aSDavid Howells /* 10580d81a51aSDavid Howells * recvmsg.c 10590d81a51aSDavid Howells */ 1060248f219cSDavid Howells void rxrpc_notify_socket(struct rxrpc_call *); 10610d81a51aSDavid Howells int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); 10620d81a51aSDavid Howells 10630d81a51aSDavid Howells /* 1064648af7fcSDavid Howells * rxkad.c 1065648af7fcSDavid Howells */ 1066648af7fcSDavid Howells #ifdef CONFIG_RXKAD 1067648af7fcSDavid Howells extern const struct rxrpc_security rxkad; 1068648af7fcSDavid Howells #endif 1069648af7fcSDavid Howells 1070648af7fcSDavid Howells /* 10710d81a51aSDavid Howells * security.c 10720d81a51aSDavid Howells */ 10730d81a51aSDavid Howells int __init rxrpc_init_security(void); 10740d81a51aSDavid Howells void rxrpc_exit_security(void); 10750d81a51aSDavid Howells int rxrpc_init_client_conn_security(struct rxrpc_connection *); 10760d81a51aSDavid Howells int rxrpc_init_server_conn_security(struct rxrpc_connection *); 10770d81a51aSDavid Howells 10780d81a51aSDavid Howells /* 10790b58b8a1SDavid Howells * sendmsg.c 10800b58b8a1SDavid Howells */ 10810b58b8a1SDavid Howells int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); 10820b58b8a1SDavid Howells 10830b58b8a1SDavid Howells /* 10840d81a51aSDavid Howells * skbuff.c 10850d81a51aSDavid Howells */ 1086d001648eSDavid Howells void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); 10870d81a51aSDavid Howells void rxrpc_packet_destructor(struct sk_buff *); 108871f3ca40SDavid Howells void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); 108971f3ca40SDavid Howells void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); 109071f3ca40SDavid Howells void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); 109171f3ca40SDavid Howells void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); 109271f3ca40SDavid Howells void rxrpc_lose_skb(struct sk_buff *, enum rxrpc_skb_trace); 1093df844fd4SDavid Howells void rxrpc_purge_queue(struct sk_buff_head *); 10940d81a51aSDavid Howells 10950d81a51aSDavid Howells /* 10965873c083SDavid Howells * sysctl.c 10975873c083SDavid Howells */ 10985873c083SDavid Howells #ifdef CONFIG_SYSCTL 10995873c083SDavid Howells extern int __init rxrpc_sysctl_init(void); 11005873c083SDavid Howells extern void rxrpc_sysctl_exit(void); 11015873c083SDavid Howells #else 11025873c083SDavid Howells static inline int __init rxrpc_sysctl_init(void) { return 0; } 11035873c083SDavid Howells static inline void rxrpc_sysctl_exit(void) {} 11045873c083SDavid Howells #endif 11055873c083SDavid Howells 11065873c083SDavid Howells /* 1107be6e6707SDavid Howells * utils.c 1108be6e6707SDavid Howells */ 11097b674e39SDavid Howells int rxrpc_extract_addr_from_skb(struct rxrpc_local *, struct sockaddr_rxrpc *, 11107b674e39SDavid Howells struct sk_buff *); 1111be6e6707SDavid Howells 1112248f219cSDavid Howells static inline bool before(u32 seq1, u32 seq2) 1113248f219cSDavid Howells { 1114248f219cSDavid Howells return (s32)(seq1 - seq2) < 0; 1115248f219cSDavid Howells } 1116248f219cSDavid Howells static inline bool before_eq(u32 seq1, u32 seq2) 1117248f219cSDavid Howells { 1118248f219cSDavid Howells return (s32)(seq1 - seq2) <= 0; 1119248f219cSDavid Howells } 1120248f219cSDavid Howells static inline bool after(u32 seq1, u32 seq2) 1121248f219cSDavid Howells { 1122248f219cSDavid Howells return (s32)(seq1 - seq2) > 0; 1123248f219cSDavid Howells } 1124248f219cSDavid Howells static inline bool after_eq(u32 seq1, u32 seq2) 1125248f219cSDavid Howells { 1126248f219cSDavid Howells return (s32)(seq1 - seq2) >= 0; 1127248f219cSDavid Howells } 1128248f219cSDavid Howells 1129be6e6707SDavid Howells /* 113017926a79SDavid Howells * debug tracing 113117926a79SDavid Howells */ 113295c96174SEric Dumazet extern unsigned int rxrpc_debug; 113317926a79SDavid Howells 113417926a79SDavid Howells #define dbgprintk(FMT,...) \ 11359f389f4bSSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 113617926a79SDavid Howells 11370dc47877SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 11380dc47877SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 113917926a79SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 114017926a79SDavid Howells #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) 114117926a79SDavid Howells #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) 114217926a79SDavid Howells 114317926a79SDavid Howells 114417926a79SDavid Howells #if defined(__KDEBUG) 114517926a79SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 114617926a79SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 114717926a79SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 114817926a79SDavid Howells #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) 114917926a79SDavid Howells #define _net(FMT,...) knet(FMT,##__VA_ARGS__) 115017926a79SDavid Howells 115117926a79SDavid Howells #elif defined(CONFIG_AF_RXRPC_DEBUG) 115217926a79SDavid Howells #define RXRPC_DEBUG_KENTER 0x01 115317926a79SDavid Howells #define RXRPC_DEBUG_KLEAVE 0x02 115417926a79SDavid Howells #define RXRPC_DEBUG_KDEBUG 0x04 115517926a79SDavid Howells #define RXRPC_DEBUG_KPROTO 0x08 115617926a79SDavid Howells #define RXRPC_DEBUG_KNET 0x10 115717926a79SDavid Howells 115817926a79SDavid Howells #define _enter(FMT,...) \ 115917926a79SDavid Howells do { \ 116017926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ 116117926a79SDavid Howells kenter(FMT,##__VA_ARGS__); \ 116217926a79SDavid Howells } while (0) 116317926a79SDavid Howells 116417926a79SDavid Howells #define _leave(FMT,...) \ 116517926a79SDavid Howells do { \ 116617926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ 116717926a79SDavid Howells kleave(FMT,##__VA_ARGS__); \ 116817926a79SDavid Howells } while (0) 116917926a79SDavid Howells 117017926a79SDavid Howells #define _debug(FMT,...) \ 117117926a79SDavid Howells do { \ 117217926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ 117317926a79SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 117417926a79SDavid Howells } while (0) 117517926a79SDavid Howells 117617926a79SDavid Howells #define _proto(FMT,...) \ 117717926a79SDavid Howells do { \ 117817926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ 117917926a79SDavid Howells kproto(FMT,##__VA_ARGS__); \ 118017926a79SDavid Howells } while (0) 118117926a79SDavid Howells 118217926a79SDavid Howells #define _net(FMT,...) \ 118317926a79SDavid Howells do { \ 118417926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ 118517926a79SDavid Howells knet(FMT,##__VA_ARGS__); \ 118617926a79SDavid Howells } while (0) 118717926a79SDavid Howells 118817926a79SDavid Howells #else 118912fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 119012fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 119112fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 119212fdff3fSDavid Howells #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) 119312fdff3fSDavid Howells #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) 119417926a79SDavid Howells #endif 119517926a79SDavid Howells 119617926a79SDavid Howells /* 119717926a79SDavid Howells * debug assertion checking 119817926a79SDavid Howells */ 119917926a79SDavid Howells #if 1 // defined(__KDEBUGALL) 120017926a79SDavid Howells 120117926a79SDavid Howells #define ASSERT(X) \ 120217926a79SDavid Howells do { \ 120317926a79SDavid Howells if (unlikely(!(X))) { \ 12049b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 120517926a79SDavid Howells BUG(); \ 120617926a79SDavid Howells } \ 120717926a79SDavid Howells } while (0) 120817926a79SDavid Howells 120917926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 121017926a79SDavid Howells do { \ 1211cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1212cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 12139b6d5398SJoe Perches if (unlikely(!(_x OP _y))) { \ 12149b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1215cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1216cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 121717926a79SDavid Howells BUG(); \ 121817926a79SDavid Howells } \ 121917926a79SDavid Howells } while (0) 122017926a79SDavid Howells 122117926a79SDavid Howells #define ASSERTIF(C, X) \ 122217926a79SDavid Howells do { \ 122317926a79SDavid Howells if (unlikely((C) && !(X))) { \ 12249b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 122517926a79SDavid Howells BUG(); \ 122617926a79SDavid Howells } \ 122717926a79SDavid Howells } while (0) 122817926a79SDavid Howells 122917926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 123017926a79SDavid Howells do { \ 1231cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1232cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 12339b6d5398SJoe Perches if (unlikely((C) && !(_x OP _y))) { \ 12349b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1235cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1236cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 123717926a79SDavid Howells BUG(); \ 123817926a79SDavid Howells } \ 123917926a79SDavid Howells } while (0) 124017926a79SDavid Howells 124117926a79SDavid Howells #else 124217926a79SDavid Howells 124317926a79SDavid Howells #define ASSERT(X) \ 124417926a79SDavid Howells do { \ 124517926a79SDavid Howells } while (0) 124617926a79SDavid Howells 124717926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 124817926a79SDavid Howells do { \ 124917926a79SDavid Howells } while (0) 125017926a79SDavid Howells 125117926a79SDavid Howells #define ASSERTIF(C, X) \ 125217926a79SDavid Howells do { \ 125317926a79SDavid Howells } while (0) 125417926a79SDavid Howells 125517926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 125617926a79SDavid Howells do { \ 125717926a79SDavid Howells } while (0) 125817926a79SDavid Howells 125917926a79SDavid Howells #endif /* __KDEBUGALL */ 1260