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; 107330bdcfaSDavid Howells time64_t peer_keepalive_base; 108330bdcfaSDavid Howells struct list_head peer_keepalive[32]; 109330bdcfaSDavid Howells struct list_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 */ 298330bdcfaSDavid Howells struct list_head 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 */ 4234764c0daSDavid Howells unsigned int call_debug_id; /* call->debug_id */ 424a1399f8bSDavid Howells u32 call_id; /* ID of current call */ 425a1399f8bSDavid Howells u32 call_counter; /* Call ID counter */ 426a1399f8bSDavid Howells u32 last_call; /* ID of last call */ 42718bfeba5SDavid Howells u8 last_type; /* Type of last packet */ 42818bfeba5SDavid Howells union { 42918bfeba5SDavid Howells u32 last_seq; 43018bfeba5SDavid Howells u32 last_abort; 43118bfeba5SDavid Howells }; 432a1399f8bSDavid Howells } channels[RXRPC_MAXCALLS]; 433999b69f8SDavid Howells 4343136ef49SDavid Howells struct timer_list timer; /* Conn event timer */ 43517926a79SDavid Howells struct work_struct processor; /* connection event processor */ 436999b69f8SDavid Howells union { 437999b69f8SDavid Howells struct rb_node client_node; /* Node in local->client_conns */ 438aa390bbeSDavid Howells struct rb_node service_node; /* Node in peer->service_conns */ 439999b69f8SDavid Howells }; 4404d028b2cSDavid Howells struct list_head proc_link; /* link in procfs list */ 44117926a79SDavid Howells struct list_head link; /* link in master connection list */ 44217926a79SDavid Howells struct sk_buff_head rx_queue; /* received conn-level packets */ 443648af7fcSDavid Howells const struct rxrpc_security *security; /* applied security module */ 44417926a79SDavid Howells struct key *server_key; /* security for this service */ 4451afe593bSHerbert Xu struct crypto_skcipher *cipher; /* encryption handle */ 44617926a79SDavid Howells struct rxrpc_crypt csum_iv; /* packet checksum base */ 4474a3388c8SDavid Howells unsigned long flags; 44817926a79SDavid Howells unsigned long events; 449f51b4480SDavid Howells unsigned long idle_timestamp; /* Time at which last became idle */ 45017926a79SDavid Howells spinlock_t state_lock; /* state-change lock */ 451cf13258fSDavid Howells enum rxrpc_conn_cache_state cache_state; 452cf13258fSDavid Howells enum rxrpc_conn_proto_state state; /* current state of connection */ 453dc44b3a0SDavid Howells u32 local_abort; /* local abort code */ 454dc44b3a0SDavid Howells u32 remote_abort; /* remote abort code */ 45517926a79SDavid Howells int debug_id; /* debug ID for printks */ 45617926a79SDavid Howells atomic_t serial; /* packet serial number counter */ 457563ea7d5SDavid Howells unsigned int hi_serial; /* highest serial number received */ 45817926a79SDavid Howells u32 security_nonce; /* response re-use preventer */ 45968d6d1aeSDavid Howells u16 service_id; /* Service ID, possibly upgraded */ 4605a924b89SDavid Howells u8 size_align; /* data size alignment (for security) */ 4615a924b89SDavid Howells u8 security_size; /* security header size */ 46217926a79SDavid Howells u8 security_ix; /* security type */ 46317926a79SDavid Howells u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ 46417926a79SDavid Howells }; 46517926a79SDavid Howells 466dc71db34SDavid Howells static inline bool rxrpc_to_server(const struct rxrpc_skb_priv *sp) 467dc71db34SDavid Howells { 468dc71db34SDavid Howells return sp->hdr.flags & RXRPC_CLIENT_INITIATED; 469dc71db34SDavid Howells } 470dc71db34SDavid Howells 471dc71db34SDavid Howells static inline bool rxrpc_to_client(const struct rxrpc_skb_priv *sp) 472dc71db34SDavid Howells { 473dc71db34SDavid Howells return !rxrpc_to_server(sp); 474dc71db34SDavid Howells } 475dc71db34SDavid Howells 47617926a79SDavid Howells /* 4775b8848d1SDavid Howells * Flags in call->flags. 4785b8848d1SDavid Howells */ 4795b8848d1SDavid Howells enum rxrpc_call_flag { 4805b8848d1SDavid Howells RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ 4815b8848d1SDavid Howells RXRPC_CALL_HAS_USERID, /* has a user ID attached */ 482dabe5a79SDavid Howells RXRPC_CALL_IS_SERVICE, /* Call is service call */ 48345025bceSDavid Howells RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ 484248f219cSDavid Howells RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ 485248f219cSDavid Howells RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ 486c038a58cSDavid Howells RXRPC_CALL_TX_LASTQ, /* Last packet has been queued */ 487a5af7e1fSDavid Howells RXRPC_CALL_SEND_PING, /* A ping will need to be sent */ 4888e83134dSDavid Howells RXRPC_CALL_PINGING, /* Ping in process */ 48957494343SDavid Howells RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */ 490c54e43d7SDavid Howells RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */ 4911a025028SDavid Howells RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */ 492d0b35a42SDavid Howells RXRPC_CALL_RX_UNDERRUN, /* Got data underrun */ 4935b8848d1SDavid Howells }; 4945b8848d1SDavid Howells 4955b8848d1SDavid Howells /* 4965b8848d1SDavid Howells * Events that can be raised on a call. 4975b8848d1SDavid Howells */ 4985b8848d1SDavid Howells enum rxrpc_call_event { 4994c198ad1SDavid Howells RXRPC_CALL_EV_ACK, /* need to generate ACK */ 5004c198ad1SDavid Howells RXRPC_CALL_EV_ABORT, /* need to generate abort */ 5014c198ad1SDavid Howells RXRPC_CALL_EV_RESEND, /* Tx resend required */ 502a5af7e1fSDavid Howells RXRPC_CALL_EV_PING, /* Ping send required */ 503a158bdd3SDavid Howells RXRPC_CALL_EV_EXPIRED, /* Expiry occurred */ 504bd1fdf8cSDavid Howells RXRPC_CALL_EV_ACK_LOST, /* ACK may be lost, send ping */ 5055b8848d1SDavid Howells }; 5065b8848d1SDavid Howells 5075b8848d1SDavid Howells /* 5085b8848d1SDavid Howells * The states that a call can be in. 5095b8848d1SDavid Howells */ 5105b8848d1SDavid Howells enum rxrpc_call_state { 511999b69f8SDavid Howells RXRPC_CALL_UNINITIALISED, 512999b69f8SDavid Howells RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ 5135b8848d1SDavid Howells RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ 5145b8848d1SDavid Howells RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ 5155b8848d1SDavid Howells RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ 51600e90712SDavid Howells RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ 5175b8848d1SDavid Howells RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ 5185b8848d1SDavid Howells RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ 5195b8848d1SDavid Howells RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ 5205b8848d1SDavid Howells RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ 5215b8848d1SDavid Howells RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ 5225b8848d1SDavid Howells RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ 523f5c17aaeSDavid Howells RXRPC_CALL_COMPLETE, /* - call complete */ 524f5c17aaeSDavid Howells NR__RXRPC_CALL_STATES 525f5c17aaeSDavid Howells }; 526f5c17aaeSDavid Howells 527f5c17aaeSDavid Howells /* 52857494343SDavid Howells * Call Tx congestion management modes. 52957494343SDavid Howells */ 53057494343SDavid Howells enum rxrpc_congest_mode { 53157494343SDavid Howells RXRPC_CALL_SLOW_START, 53257494343SDavid Howells RXRPC_CALL_CONGEST_AVOIDANCE, 53357494343SDavid Howells RXRPC_CALL_PACKET_LOSS, 53457494343SDavid Howells RXRPC_CALL_FAST_RETRANSMIT, 53557494343SDavid Howells NR__RXRPC_CONGEST_MODES 53657494343SDavid Howells }; 53757494343SDavid Howells 53857494343SDavid Howells /* 53917926a79SDavid Howells * RxRPC call definition 54017926a79SDavid Howells * - matched by { connection, call_id } 54117926a79SDavid Howells */ 54217926a79SDavid Howells struct rxrpc_call { 543dee46364SDavid Howells struct rcu_head rcu; 54417926a79SDavid Howells struct rxrpc_connection *conn; /* connection carrying call */ 545df5d8bf7SDavid Howells struct rxrpc_peer *peer; /* Peer record for remote address */ 5468d94aa38SDavid Howells struct rxrpc_sock __rcu *socket; /* socket responsible */ 547d3be4d24SDavid Howells struct rxrpc_net *rxnet; /* Network namespace to which call belongs */ 548540b1c48SDavid Howells struct mutex user_mutex; /* User access mutex */ 549a158bdd3SDavid Howells unsigned long ack_at; /* When deferred ACK needs to happen */ 550bd1fdf8cSDavid Howells unsigned long ack_lost_at; /* When ACK is figured as lost */ 551a158bdd3SDavid Howells unsigned long resend_at; /* When next resend needs to happen */ 552a158bdd3SDavid Howells unsigned long ping_at; /* When next to send a ping */ 553415f44e4SDavid Howells unsigned long keepalive_at; /* When next to send a keepalive ping */ 554a158bdd3SDavid Howells unsigned long expect_rx_by; /* When we expect to get a packet by */ 555a158bdd3SDavid Howells unsigned long expect_req_by; /* When we expect to get a request DATA packet by */ 556a158bdd3SDavid Howells unsigned long expect_term_by; /* When we expect call termination by */ 557a158bdd3SDavid Howells u32 next_rx_timo; /* Timeout for next Rx packet (jif) */ 558a158bdd3SDavid Howells u32 next_req_timo; /* Timeout for next Rx request packet (jif) */ 559248f219cSDavid Howells struct timer_list timer; /* Combined event timer */ 560248f219cSDavid Howells struct work_struct processor; /* Event processor */ 561d001648eSDavid Howells rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ 56217926a79SDavid Howells struct list_head link; /* link in master call list */ 56345025bceSDavid Howells struct list_head chan_wait_link; /* Link in conn->waiting_calls */ 564f66d7490SDavid Howells struct hlist_node error_link; /* link in error distribution list */ 565248f219cSDavid Howells struct list_head accept_link; /* Link in rx->acceptq */ 566248f219cSDavid Howells struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ 567248f219cSDavid Howells struct list_head sock_link; /* Link in rx->sock_calls */ 568248f219cSDavid Howells struct rb_node sock_node; /* Node in rx->calls */ 56917926a79SDavid Howells struct sk_buff *tx_pending; /* Tx socket buffer being filled */ 57045025bceSDavid Howells wait_queue_head_t waitq; /* Wait queue for channel or Tx */ 571e754eba6SDavid Howells s64 tx_total_len; /* Total length left to be transmitted (or -1) */ 572a263629dSHerbert Xu __be32 crypto_buf[2]; /* Temporary packet crypto buffer */ 57317926a79SDavid Howells unsigned long user_call_ID; /* user-defined call ID */ 57417926a79SDavid Howells unsigned long flags; 57517926a79SDavid Howells unsigned long events; 57617926a79SDavid Howells spinlock_t lock; 57720acbd9aSDavid Howells spinlock_t notify_lock; /* Kernel notification lock */ 57817926a79SDavid Howells rwlock_t state_lock; /* lock for state transition */ 579f5c17aaeSDavid Howells u32 abort_code; /* Local/remote abort code */ 580f5c17aaeSDavid Howells int error; /* Local error incurred */ 581cf13258fSDavid Howells enum rxrpc_call_state state; /* current state of call */ 582cf13258fSDavid Howells enum rxrpc_call_completion completion; /* Call completion condition */ 58317926a79SDavid Howells atomic_t usage; 584dabe5a79SDavid Howells u16 service_id; /* service ID */ 585278ac0cdSDavid Howells u8 security_ix; /* Security type */ 586dabe5a79SDavid Howells u32 call_id; /* call ID on connection */ 587dabe5a79SDavid Howells u32 cid; /* connection ID plus channel index */ 588dabe5a79SDavid Howells int debug_id; /* debug ID for printks */ 5898e83134dSDavid Howells unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ 5908e83134dSDavid Howells unsigned short rx_pkt_len; /* Current recvmsg packet len */ 59117926a79SDavid Howells 592248f219cSDavid Howells /* Rx/Tx circular buffer, depending on phase. 593248f219cSDavid Howells * 594248f219cSDavid Howells * In the Rx phase, packets are annotated with 0 or the number of the 595248f219cSDavid Howells * segment of a jumbo packet each buffer refers to. There can be up to 596248f219cSDavid Howells * 47 segments in a maximum-size UDP packet. 597248f219cSDavid Howells * 598248f219cSDavid Howells * In the Tx phase, packets are annotated with which buffers have been 599248f219cSDavid Howells * acked. 60017926a79SDavid Howells */ 601248f219cSDavid Howells #define RXRPC_RXTX_BUFF_SIZE 64 602248f219cSDavid Howells #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1) 6034075295aSDavid Howells #define RXRPC_INIT_RX_WINDOW_SIZE 63 604248f219cSDavid Howells struct sk_buff **rxtx_buffer; 605248f219cSDavid Howells u8 *rxtx_annotations; 606248f219cSDavid Howells #define RXRPC_TX_ANNO_ACK 0 607248f219cSDavid Howells #define RXRPC_TX_ANNO_UNACK 1 608248f219cSDavid Howells #define RXRPC_TX_ANNO_NAK 2 609248f219cSDavid Howells #define RXRPC_TX_ANNO_RETRANS 3 610f07373eaSDavid Howells #define RXRPC_TX_ANNO_MASK 0x03 61170790dbeSDavid Howells #define RXRPC_TX_ANNO_LAST 0x04 61270790dbeSDavid Howells #define RXRPC_TX_ANNO_RESENT 0x08 61370790dbeSDavid Howells 614248f219cSDavid Howells #define RXRPC_RX_ANNO_JUMBO 0x3f /* Jumbo subpacket number + 1 if not zero */ 615248f219cSDavid Howells #define RXRPC_RX_ANNO_JLAST 0x40 /* Set if last element of a jumbo packet */ 616248f219cSDavid Howells #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ 617248f219cSDavid Howells rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but 618248f219cSDavid Howells * not hard-ACK'd packet follows this. 619248f219cSDavid Howells */ 620248f219cSDavid Howells rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ 62157494343SDavid Howells 62257494343SDavid Howells /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS 62357494343SDavid Howells * is fixed, we keep these numbers in terms of segments (ie. DATA 62457494343SDavid Howells * packets) rather than bytes. 62557494343SDavid Howells */ 62657494343SDavid Howells #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN 62757494343SDavid Howells u8 cong_cwnd; /* Congestion window size */ 62857494343SDavid Howells u8 cong_extra; /* Extra to send for congestion management */ 62957494343SDavid Howells u8 cong_ssthresh; /* Slow-start threshold */ 63057494343SDavid Howells enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */ 63157494343SDavid Howells u8 cong_dup_acks; /* Count of ACKs showing missing packets */ 63257494343SDavid Howells u8 cong_cumul_acks; /* Cumulative ACK count */ 63357494343SDavid Howells ktime_t cong_tstamp; /* Last time cwnd was changed */ 63457494343SDavid Howells 635248f219cSDavid Howells rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not 636248f219cSDavid Howells * consumed packet follows this. 637248f219cSDavid Howells */ 638248f219cSDavid Howells rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */ 639248f219cSDavid Howells rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */ 6401a025028SDavid Howells rxrpc_serial_t rx_serial; /* Highest serial received for this call */ 641248f219cSDavid Howells u8 rx_winsize; /* Size of Rx window */ 642248f219cSDavid Howells u8 tx_winsize; /* Maximum size of Tx window */ 64371f3ca40SDavid Howells bool tx_phase; /* T if transmission phase, F if receive phase */ 64475e42126SDavid Howells u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */ 64517926a79SDavid Howells 64617926a79SDavid Howells /* receive-phase ACK management */ 6474e36a95eSDavid Howells u8 ackr_reason; /* reason to ACK */ 648563ea7d5SDavid Howells u16 ackr_skew; /* skew on packet being ACK'd */ 6490d12f8a4SDavid Howells rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ 650248f219cSDavid Howells rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ 651805b21b9SDavid Howells rxrpc_seq_t ackr_consumed; /* Highest packet shown consumed */ 652805b21b9SDavid Howells rxrpc_seq_t ackr_seen; /* Highest packet shown seen */ 653a5af7e1fSDavid Howells 654a5af7e1fSDavid Howells /* ping management */ 655a5af7e1fSDavid Howells rxrpc_serial_t ping_serial; /* Last ping sent */ 656a5af7e1fSDavid Howells ktime_t ping_time; /* Time last ping sent */ 65717926a79SDavid Howells 658248f219cSDavid Howells /* transmission-phase ACK management */ 65957494343SDavid Howells ktime_t acks_latest_ts; /* Timestamp of latest ACK received */ 660248f219cSDavid Howells rxrpc_serial_t acks_latest; /* serial number of latest ACK received */ 66131a1b989SDavid Howells rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */ 662bd1fdf8cSDavid Howells rxrpc_seq_t acks_lost_top; /* tx_top at the time lost-ack ping sent */ 663bd1fdf8cSDavid Howells rxrpc_serial_t acks_lost_ping; /* Serial number of probe ACK */ 66431a1b989SDavid Howells }; 66531a1b989SDavid Howells 66631a1b989SDavid Howells /* 66757494343SDavid Howells * Summary of a new ACK and the changes it made to the Tx buffer packet states. 66831a1b989SDavid Howells */ 66931a1b989SDavid Howells struct rxrpc_ack_summary { 67031a1b989SDavid Howells u8 ack_reason; 67131a1b989SDavid Howells u8 nr_acks; /* Number of ACKs in packet */ 67231a1b989SDavid Howells u8 nr_nacks; /* Number of NACKs in packet */ 67331a1b989SDavid Howells u8 nr_new_acks; /* Number of new ACKs in packet */ 67431a1b989SDavid Howells u8 nr_new_nacks; /* Number of new NACKs in packet */ 67531a1b989SDavid Howells u8 nr_rot_new_acks; /* Number of rotated new ACKs */ 67631a1b989SDavid Howells bool new_low_nack; /* T if new low NACK found */ 67757494343SDavid Howells bool retrans_timeo; /* T if reTx due to timeout happened */ 67857494343SDavid Howells u8 flight_size; /* Number of unreceived transmissions */ 67957494343SDavid Howells /* Place to stash values for tracing */ 68057494343SDavid Howells enum rxrpc_congest_mode mode:8; 68157494343SDavid Howells u8 cwnd; 68257494343SDavid Howells u8 ssthresh; 68357494343SDavid Howells u8 dup_acks; 68457494343SDavid Howells u8 cumulative_acks; 68517926a79SDavid Howells }; 68617926a79SDavid Howells 68748124178SDavid Howells /* 68848124178SDavid Howells * sendmsg() cmsg-specified parameters. 68948124178SDavid Howells */ 69048124178SDavid Howells enum rxrpc_command { 69148124178SDavid Howells RXRPC_CMD_SEND_DATA, /* send data message */ 69248124178SDavid Howells RXRPC_CMD_SEND_ABORT, /* request abort generation */ 69348124178SDavid Howells RXRPC_CMD_ACCEPT, /* [server] accept incoming call */ 69448124178SDavid Howells RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */ 69548124178SDavid Howells }; 69648124178SDavid Howells 69748124178SDavid Howells struct rxrpc_call_params { 69848124178SDavid Howells s64 tx_total_len; /* Total Tx data length (if send data) */ 69948124178SDavid Howells unsigned long user_call_ID; /* User's call ID */ 70048124178SDavid Howells struct { 70148124178SDavid Howells u32 hard; /* Maximum lifetime (sec) */ 70248124178SDavid Howells u32 idle; /* Max time since last data packet (msec) */ 70348124178SDavid Howells u32 normal; /* Max time since last call packet (msec) */ 70448124178SDavid Howells } timeouts; 70548124178SDavid Howells u8 nr_timeouts; /* Number of timeouts specified */ 70648124178SDavid Howells }; 70748124178SDavid Howells 70848124178SDavid Howells struct rxrpc_send_params { 70948124178SDavid Howells struct rxrpc_call_params call; 71048124178SDavid Howells u32 abort_code; /* Abort code to Tx (if abort) */ 71148124178SDavid Howells enum rxrpc_command command : 8; /* The command to implement */ 71248124178SDavid Howells bool exclusive; /* Shared or exclusive call */ 71348124178SDavid Howells bool upgrade; /* If the connection is upgradeable */ 71448124178SDavid Howells }; 71548124178SDavid Howells 716df844fd4SDavid Howells #include <trace/events/rxrpc.h> 717df844fd4SDavid Howells 71817926a79SDavid Howells /* 719651350d1SDavid Howells * af_rxrpc.c 72017926a79SDavid Howells */ 72171f3ca40SDavid Howells extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs; 722651350d1SDavid Howells extern struct workqueue_struct *rxrpc_workqueue; 72317926a79SDavid Howells 72417926a79SDavid Howells /* 7250d81a51aSDavid Howells * call_accept.c 72617926a79SDavid Howells */ 72700e90712SDavid Howells int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); 72800e90712SDavid Howells void rxrpc_discard_prealloc(struct rxrpc_sock *); 729248f219cSDavid Howells struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *, 730248f219cSDavid Howells struct rxrpc_connection *, 731248f219cSDavid Howells struct sk_buff *); 7324f95dd78SDavid Howells void rxrpc_accept_incoming_calls(struct rxrpc_local *); 733d001648eSDavid Howells struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long, 734d001648eSDavid Howells rxrpc_notify_rx_t); 735c1b1203dSJoe Perches int rxrpc_reject_call(struct rxrpc_sock *); 73617926a79SDavid Howells 73717926a79SDavid Howells /* 7380d81a51aSDavid Howells * call_event.c 73917926a79SDavid Howells */ 7409c7ad434SDavid Howells void rxrpc_propose_ACK(struct rxrpc_call *, u8, u16, u32, bool, bool, 7419c7ad434SDavid Howells enum rxrpc_propose_ack_trace); 742c1b1203dSJoe Perches void rxrpc_process_call(struct work_struct *); 74317926a79SDavid Howells 744a158bdd3SDavid Howells static inline void rxrpc_reduce_call_timer(struct rxrpc_call *call, 745a158bdd3SDavid Howells unsigned long expire_at, 746a158bdd3SDavid Howells unsigned long now, 747a158bdd3SDavid Howells enum rxrpc_timer_trace why) 748a158bdd3SDavid Howells { 749a158bdd3SDavid Howells trace_rxrpc_timer(call, why, now); 750a158bdd3SDavid Howells timer_reduce(&call->timer, expire_at); 751a158bdd3SDavid Howells } 752a158bdd3SDavid Howells 75317926a79SDavid Howells /* 7540d81a51aSDavid Howells * call_object.c 75517926a79SDavid Howells */ 756f5c17aaeSDavid Howells extern const char *const rxrpc_call_states[]; 757f5c17aaeSDavid Howells extern const char *const rxrpc_call_completions[]; 758dad8aff7SDavid Howells extern unsigned int rxrpc_max_call_lifetime; 75917926a79SDavid Howells extern struct kmem_cache *rxrpc_call_jar; 76017926a79SDavid Howells 7612341e077SDavid Howells struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); 762a25e21f0SDavid Howells struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *, gfp_t, unsigned int); 7632341e077SDavid Howells struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, 76419ffa01cSDavid Howells struct rxrpc_conn_parameters *, 765999b69f8SDavid Howells struct sockaddr_rxrpc *, 766a25e21f0SDavid Howells struct rxrpc_call_params *, gfp_t, 767a25e21f0SDavid Howells unsigned int); 768c038a58cSDavid Howells int rxrpc_retry_client_call(struct rxrpc_sock *, 769c038a58cSDavid Howells struct rxrpc_call *, 770c038a58cSDavid Howells struct rxrpc_conn_parameters *, 771c038a58cSDavid Howells struct sockaddr_rxrpc *, 772c038a58cSDavid Howells gfp_t); 773248f219cSDavid Howells void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, 77442886ffeSDavid Howells struct sk_buff *); 7758d94aa38SDavid Howells void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); 776c038a58cSDavid Howells int rxrpc_prepare_call_for_retry(struct rxrpc_sock *, struct rxrpc_call *); 777c1b1203dSJoe Perches void rxrpc_release_calls_on_socket(struct rxrpc_sock *); 7788d94aa38SDavid Howells bool __rxrpc_queue_call(struct rxrpc_call *); 7798d94aa38SDavid Howells bool rxrpc_queue_call(struct rxrpc_call *); 780e34d4234SDavid Howells void rxrpc_see_call(struct rxrpc_call *); 781fff72429SDavid Howells void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 782fff72429SDavid Howells void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); 78300e90712SDavid Howells void rxrpc_cleanup_call(struct rxrpc_call *); 7842baec2c3SDavid Howells void rxrpc_destroy_all_calls(struct rxrpc_net *); 78517926a79SDavid Howells 786dabe5a79SDavid Howells static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) 787dabe5a79SDavid Howells { 788dabe5a79SDavid Howells return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); 789dabe5a79SDavid Howells } 790dabe5a79SDavid Howells 791dabe5a79SDavid Howells static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) 792dabe5a79SDavid Howells { 793dabe5a79SDavid Howells return !rxrpc_is_service_call(call); 794dabe5a79SDavid Howells } 795dabe5a79SDavid Howells 79617926a79SDavid Howells /* 797f5c17aaeSDavid Howells * Transition a call to the complete state. 798f5c17aaeSDavid Howells */ 799f5c17aaeSDavid Howells static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call, 800f5c17aaeSDavid Howells enum rxrpc_call_completion compl, 801f5c17aaeSDavid Howells u32 abort_code, 802f5c17aaeSDavid Howells int error) 803f5c17aaeSDavid Howells { 804f5c17aaeSDavid Howells if (call->state < RXRPC_CALL_COMPLETE) { 805f5c17aaeSDavid Howells call->abort_code = abort_code; 806f5c17aaeSDavid Howells call->error = error; 807f5c17aaeSDavid Howells call->completion = compl, 808f5c17aaeSDavid Howells call->state = RXRPC_CALL_COMPLETE; 8091bae5d22SDavid Howells trace_rxrpc_call_complete(call); 810c0d058c2SDavid Howells wake_up(&call->waitq); 811f5c17aaeSDavid Howells return true; 812f5c17aaeSDavid Howells } 813f5c17aaeSDavid Howells return false; 814f5c17aaeSDavid Howells } 815f5c17aaeSDavid Howells 816f5c17aaeSDavid Howells static inline bool rxrpc_set_call_completion(struct rxrpc_call *call, 817f5c17aaeSDavid Howells enum rxrpc_call_completion compl, 818f5c17aaeSDavid Howells u32 abort_code, 819f5c17aaeSDavid Howells int error) 820f5c17aaeSDavid Howells { 821e8d6bbb0SDavid Howells bool ret; 822f5c17aaeSDavid Howells 823f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 824f5c17aaeSDavid Howells ret = __rxrpc_set_call_completion(call, compl, abort_code, error); 825f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 826f5c17aaeSDavid Howells return ret; 827f5c17aaeSDavid Howells } 828f5c17aaeSDavid Howells 829f5c17aaeSDavid Howells /* 830f5c17aaeSDavid Howells * Record that a call successfully completed. 831f5c17aaeSDavid Howells */ 832e8d6bbb0SDavid Howells static inline bool __rxrpc_call_completed(struct rxrpc_call *call) 833f5c17aaeSDavid Howells { 834e8d6bbb0SDavid Howells return __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0); 835f5c17aaeSDavid Howells } 836f5c17aaeSDavid Howells 837e8d6bbb0SDavid Howells static inline bool rxrpc_call_completed(struct rxrpc_call *call) 838f5c17aaeSDavid Howells { 839e8d6bbb0SDavid Howells bool ret; 840e8d6bbb0SDavid Howells 841f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 842e8d6bbb0SDavid Howells ret = __rxrpc_call_completed(call); 843f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 844e8d6bbb0SDavid Howells return ret; 845f5c17aaeSDavid Howells } 846f5c17aaeSDavid Howells 847f5c17aaeSDavid Howells /* 848f5c17aaeSDavid Howells * Record that a call is locally aborted. 849f5c17aaeSDavid Howells */ 8505a42976dSDavid Howells static inline bool __rxrpc_abort_call(const char *why, struct rxrpc_call *call, 8515a42976dSDavid Howells rxrpc_seq_t seq, 852f5c17aaeSDavid Howells u32 abort_code, int error) 853f5c17aaeSDavid Howells { 854a25e21f0SDavid Howells trace_rxrpc_abort(call->debug_id, why, call->cid, call->call_id, seq, 8555a42976dSDavid Howells abort_code, error); 856248f219cSDavid Howells return __rxrpc_set_call_completion(call, RXRPC_CALL_LOCALLY_ABORTED, 857248f219cSDavid Howells abort_code, error); 858f5c17aaeSDavid Howells } 859f5c17aaeSDavid Howells 8605a42976dSDavid Howells static inline bool rxrpc_abort_call(const char *why, struct rxrpc_call *call, 8615a42976dSDavid Howells rxrpc_seq_t seq, u32 abort_code, int error) 862f5c17aaeSDavid Howells { 863f5c17aaeSDavid Howells bool ret; 864f5c17aaeSDavid Howells 865f5c17aaeSDavid Howells write_lock_bh(&call->state_lock); 8665a42976dSDavid Howells ret = __rxrpc_abort_call(why, call, seq, abort_code, error); 867f5c17aaeSDavid Howells write_unlock_bh(&call->state_lock); 868f5c17aaeSDavid Howells return ret; 869f5c17aaeSDavid Howells } 870f5c17aaeSDavid Howells 871f5c17aaeSDavid Howells /* 872fb46f6eeSDavid Howells * Abort a call due to a protocol error. 873fb46f6eeSDavid Howells */ 874fb46f6eeSDavid Howells static inline bool __rxrpc_abort_eproto(struct rxrpc_call *call, 875fb46f6eeSDavid Howells struct sk_buff *skb, 876fb46f6eeSDavid Howells const char *eproto_why, 877fb46f6eeSDavid Howells const char *why, 878fb46f6eeSDavid Howells u32 abort_code) 879fb46f6eeSDavid Howells { 880fb46f6eeSDavid Howells struct rxrpc_skb_priv *sp = rxrpc_skb(skb); 881fb46f6eeSDavid Howells 882fb46f6eeSDavid Howells trace_rxrpc_rx_eproto(call, sp->hdr.serial, eproto_why); 883fb46f6eeSDavid Howells return rxrpc_abort_call(why, call, sp->hdr.seq, abort_code, -EPROTO); 884fb46f6eeSDavid Howells } 885fb46f6eeSDavid Howells 886fb46f6eeSDavid Howells #define rxrpc_abort_eproto(call, skb, eproto_why, abort_why, abort_code) \ 887fb46f6eeSDavid Howells __rxrpc_abort_eproto((call), (skb), tracepoint_string(eproto_why), \ 888fb46f6eeSDavid Howells (abort_why), (abort_code)) 889fb46f6eeSDavid Howells 890fb46f6eeSDavid Howells /* 8914a3388c8SDavid Howells * conn_client.c 8924a3388c8SDavid Howells */ 89345025bceSDavid Howells extern unsigned int rxrpc_max_client_connections; 89445025bceSDavid Howells extern unsigned int rxrpc_reap_client_connections; 895a158bdd3SDavid Howells extern unsigned long rxrpc_conn_idle_client_expiry; 896a158bdd3SDavid Howells extern unsigned long rxrpc_conn_idle_client_fast_expiry; 8974a3388c8SDavid Howells extern struct idr rxrpc_client_conn_ids; 8984a3388c8SDavid Howells 899eb9b9d22SDavid Howells void rxrpc_destroy_client_conn_ids(void); 900c6d2b8d7SDavid Howells int rxrpc_connect_call(struct rxrpc_call *, struct rxrpc_conn_parameters *, 901c6d2b8d7SDavid Howells struct sockaddr_rxrpc *, gfp_t); 90245025bceSDavid Howells void rxrpc_expose_client_call(struct rxrpc_call *); 90345025bceSDavid Howells void rxrpc_disconnect_client_call(struct rxrpc_call *); 90445025bceSDavid Howells void rxrpc_put_client_conn(struct rxrpc_connection *); 9052baec2c3SDavid Howells void rxrpc_discard_expired_client_conns(struct work_struct *); 9062baec2c3SDavid Howells void rxrpc_destroy_all_client_connections(struct rxrpc_net *); 9074a3388c8SDavid Howells 9084a3388c8SDavid Howells /* 9090d81a51aSDavid Howells * conn_event.c 9100d81a51aSDavid Howells */ 9110d81a51aSDavid Howells void rxrpc_process_connection(struct work_struct *); 9120d81a51aSDavid Howells 9130d81a51aSDavid Howells /* 9140d81a51aSDavid Howells * conn_object.c 91517926a79SDavid Howells */ 916dad8aff7SDavid Howells extern unsigned int rxrpc_connection_expiry; 917f859ab61SDavid Howells extern unsigned int rxrpc_closed_conn_expiry; 91817926a79SDavid Howells 919c6d2b8d7SDavid Howells struct rxrpc_connection *rxrpc_alloc_connection(gfp_t); 9208496af50SDavid Howells struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *, 921aa390bbeSDavid Howells struct sk_buff *); 92245025bceSDavid Howells void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); 923999b69f8SDavid Howells void rxrpc_disconnect_call(struct rxrpc_call *); 92445025bceSDavid Howells void rxrpc_kill_connection(struct rxrpc_connection *); 925363deeabSDavid Howells bool rxrpc_queue_conn(struct rxrpc_connection *); 926363deeabSDavid Howells void rxrpc_see_connection(struct rxrpc_connection *); 927363deeabSDavid Howells void rxrpc_get_connection(struct rxrpc_connection *); 928363deeabSDavid Howells struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *); 929363deeabSDavid Howells void rxrpc_put_service_conn(struct rxrpc_connection *); 9302baec2c3SDavid Howells void rxrpc_service_connection_reaper(struct work_struct *); 9312baec2c3SDavid Howells void rxrpc_destroy_all_connections(struct rxrpc_net *); 93217926a79SDavid Howells 93319ffa01cSDavid Howells static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) 93419ffa01cSDavid Howells { 93519ffa01cSDavid Howells return conn->out_clientflag; 93619ffa01cSDavid Howells } 93719ffa01cSDavid Howells 93819ffa01cSDavid Howells static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) 93919ffa01cSDavid Howells { 940e8d70ce1SDavid Howells return !rxrpc_conn_is_client(conn); 94119ffa01cSDavid Howells } 94219ffa01cSDavid Howells 943f51b4480SDavid Howells static inline void rxrpc_put_connection(struct rxrpc_connection *conn) 944f51b4480SDavid Howells { 94545025bceSDavid Howells if (!conn) 94645025bceSDavid Howells return; 94745025bceSDavid Howells 948363deeabSDavid Howells if (rxrpc_conn_is_client(conn)) 94945025bceSDavid Howells rxrpc_put_client_conn(conn); 950363deeabSDavid Howells else 951363deeabSDavid Howells rxrpc_put_service_conn(conn); 9525acbee46SDavid Howells } 9535acbee46SDavid Howells 9543136ef49SDavid Howells static inline void rxrpc_reduce_conn_timer(struct rxrpc_connection *conn, 9553136ef49SDavid Howells unsigned long expire_at) 9563136ef49SDavid Howells { 9573136ef49SDavid Howells timer_reduce(&conn->timer, expire_at); 9583136ef49SDavid Howells } 9593136ef49SDavid Howells 96017926a79SDavid Howells /* 9617877a4a4SDavid Howells * conn_service.c 9627877a4a4SDavid Howells */ 9638496af50SDavid Howells struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, 9648496af50SDavid Howells struct sk_buff *); 9652baec2c3SDavid Howells struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t); 9664722974dSDavid Howells void rxrpc_new_incoming_connection(struct rxrpc_sock *, 9674722974dSDavid Howells struct rxrpc_connection *, struct sk_buff *); 968001c1122SDavid Howells void rxrpc_unpublish_service_conn(struct rxrpc_connection *); 9697877a4a4SDavid Howells 9707877a4a4SDavid Howells /* 9710d81a51aSDavid Howells * input.c 97217926a79SDavid Howells */ 973676d2369SDavid S. Miller void rxrpc_data_ready(struct sock *); 97417926a79SDavid Howells 97517926a79SDavid Howells /* 9760d81a51aSDavid Howells * insecure.c 97717926a79SDavid Howells */ 9780d81a51aSDavid Howells extern const struct rxrpc_security rxrpc_no_security; 97917926a79SDavid Howells 98017926a79SDavid Howells /* 9810d81a51aSDavid Howells * key.c 98217926a79SDavid Howells */ 98317926a79SDavid Howells extern struct key_type key_type_rxrpc; 98417926a79SDavid Howells extern struct key_type key_type_rxrpc_s; 98517926a79SDavid Howells 986c1b1203dSJoe Perches int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); 987c1b1203dSJoe Perches int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); 98810674a03SBaolin Wang int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t, 989c1b1203dSJoe Perches u32); 99017926a79SDavid Howells 99117926a79SDavid Howells /* 99287563616SDavid Howells * local_event.c 99387563616SDavid Howells */ 9944f95dd78SDavid Howells extern void rxrpc_process_local_events(struct rxrpc_local *); 99587563616SDavid Howells 99687563616SDavid Howells /* 9970d81a51aSDavid Howells * local_object.c 99817926a79SDavid Howells */ 9992baec2c3SDavid Howells struct rxrpc_local *rxrpc_lookup_local(struct net *, const struct sockaddr_rxrpc *); 100009d2bf59SDavid Howells struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *); 100109d2bf59SDavid Howells struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *); 100209d2bf59SDavid Howells void rxrpc_put_local(struct rxrpc_local *); 100309d2bf59SDavid Howells void rxrpc_queue_local(struct rxrpc_local *); 10042baec2c3SDavid Howells void rxrpc_destroy_all_locals(struct rxrpc_net *); 1005e0e4d82fSDavid Howells 1006e0e4d82fSDavid Howells /* 10078e688d9cSDavid Howells * misc.c 10088e688d9cSDavid Howells */ 10090e119b41SDavid Howells extern unsigned int rxrpc_max_backlog __read_mostly; 1010a158bdd3SDavid Howells extern unsigned long rxrpc_requested_ack_delay; 1011a158bdd3SDavid Howells extern unsigned long rxrpc_soft_ack_delay; 1012a158bdd3SDavid Howells extern unsigned long rxrpc_idle_ack_delay; 10138e688d9cSDavid Howells extern unsigned int rxrpc_rx_window_size; 10148e688d9cSDavid Howells extern unsigned int rxrpc_rx_mtu; 10158e688d9cSDavid Howells extern unsigned int rxrpc_rx_jumbo_max; 1016a158bdd3SDavid Howells extern unsigned long rxrpc_resend_timeout; 10178e688d9cSDavid Howells 10188e688d9cSDavid Howells extern const s8 rxrpc_ack_priority[]; 10198e688d9cSDavid Howells 10208e688d9cSDavid Howells /* 10212baec2c3SDavid Howells * net_ns.c 10222baec2c3SDavid Howells */ 10232baec2c3SDavid Howells extern unsigned int rxrpc_net_id; 10242baec2c3SDavid Howells extern struct pernet_operations rxrpc_net_ops; 10252baec2c3SDavid Howells 10262baec2c3SDavid Howells static inline struct rxrpc_net *rxrpc_net(struct net *net) 10272baec2c3SDavid Howells { 10282baec2c3SDavid Howells return net_generic(net, rxrpc_net_id); 10292baec2c3SDavid Howells } 10302baec2c3SDavid Howells 10312baec2c3SDavid Howells /* 10320d81a51aSDavid Howells * output.c 10330d81a51aSDavid Howells */ 1034bd1fdf8cSDavid Howells int rxrpc_send_ack_packet(struct rxrpc_call *, bool, rxrpc_serial_t *); 103526cb02aaSDavid Howells int rxrpc_send_abort_packet(struct rxrpc_call *); 1036a1767077SDavid Howells int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *, bool); 1037248f219cSDavid Howells void rxrpc_reject_packets(struct rxrpc_local *); 1038ace45becSDavid Howells void rxrpc_send_keepalive(struct rxrpc_peer *); 10390d81a51aSDavid Howells 10400d81a51aSDavid Howells /* 1041abe89ef0SDavid Howells * peer_event.c 10420d81a51aSDavid Howells */ 1043abe89ef0SDavid Howells void rxrpc_error_report(struct sock *); 1044f66d7490SDavid Howells void rxrpc_peer_error_distributor(struct work_struct *); 1045cf1a6474SDavid Howells void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, 1046cf1a6474SDavid Howells rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); 1047ace45becSDavid Howells void rxrpc_peer_keepalive_worker(struct work_struct *); 10480d81a51aSDavid Howells 10490d81a51aSDavid Howells /* 10500d81a51aSDavid Howells * peer_object.c 10510d81a51aSDavid Howells */ 1052be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, 1053be6e6707SDavid Howells const struct sockaddr_rxrpc *); 1054be6e6707SDavid Howells struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *, 1055be6e6707SDavid Howells struct sockaddr_rxrpc *, gfp_t); 1056be6e6707SDavid Howells struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); 1057248f219cSDavid Howells struct rxrpc_peer *rxrpc_lookup_incoming_peer(struct rxrpc_local *, 1058248f219cSDavid Howells struct rxrpc_peer *); 105917226f12SDavid Howells void rxrpc_destroy_all_peers(struct rxrpc_net *); 10601159d4b4SDavid Howells struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *); 10611159d4b4SDavid Howells struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *); 10621159d4b4SDavid Howells void rxrpc_put_peer(struct rxrpc_peer *); 10631159d4b4SDavid Howells void __rxrpc_queue_peer_error(struct rxrpc_peer *); 10640d81a51aSDavid Howells 10650d81a51aSDavid Howells /* 10660d81a51aSDavid Howells * proc.c 10670d81a51aSDavid Howells */ 1068c3506372SChristoph Hellwig extern const struct seq_operations rxrpc_call_seq_ops; 1069c3506372SChristoph Hellwig extern const struct seq_operations rxrpc_connection_seq_ops; 10700d81a51aSDavid Howells 10710d81a51aSDavid Howells /* 10720d81a51aSDavid Howells * recvmsg.c 10730d81a51aSDavid Howells */ 1074248f219cSDavid Howells void rxrpc_notify_socket(struct rxrpc_call *); 10750d81a51aSDavid Howells int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); 10760d81a51aSDavid Howells 10770d81a51aSDavid Howells /* 1078648af7fcSDavid Howells * rxkad.c 1079648af7fcSDavid Howells */ 1080648af7fcSDavid Howells #ifdef CONFIG_RXKAD 1081648af7fcSDavid Howells extern const struct rxrpc_security rxkad; 1082648af7fcSDavid Howells #endif 1083648af7fcSDavid Howells 1084648af7fcSDavid Howells /* 10850d81a51aSDavid Howells * security.c 10860d81a51aSDavid Howells */ 10870d81a51aSDavid Howells int __init rxrpc_init_security(void); 10880d81a51aSDavid Howells void rxrpc_exit_security(void); 10890d81a51aSDavid Howells int rxrpc_init_client_conn_security(struct rxrpc_connection *); 10900d81a51aSDavid Howells int rxrpc_init_server_conn_security(struct rxrpc_connection *); 10910d81a51aSDavid Howells 10920d81a51aSDavid Howells /* 10930b58b8a1SDavid Howells * sendmsg.c 10940b58b8a1SDavid Howells */ 10950b58b8a1SDavid Howells int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); 10960b58b8a1SDavid Howells 10970b58b8a1SDavid Howells /* 10980d81a51aSDavid Howells * skbuff.c 10990d81a51aSDavid Howells */ 1100d001648eSDavid Howells void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); 11010d81a51aSDavid Howells void rxrpc_packet_destructor(struct sk_buff *); 110271f3ca40SDavid Howells void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); 110371f3ca40SDavid Howells void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); 110471f3ca40SDavid Howells void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); 110571f3ca40SDavid Howells void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); 110671f3ca40SDavid Howells void rxrpc_lose_skb(struct sk_buff *, enum rxrpc_skb_trace); 1107df844fd4SDavid Howells void rxrpc_purge_queue(struct sk_buff_head *); 11080d81a51aSDavid Howells 11090d81a51aSDavid Howells /* 11105873c083SDavid Howells * sysctl.c 11115873c083SDavid Howells */ 11125873c083SDavid Howells #ifdef CONFIG_SYSCTL 11135873c083SDavid Howells extern int __init rxrpc_sysctl_init(void); 11145873c083SDavid Howells extern void rxrpc_sysctl_exit(void); 11155873c083SDavid Howells #else 11165873c083SDavid Howells static inline int __init rxrpc_sysctl_init(void) { return 0; } 11175873c083SDavid Howells static inline void rxrpc_sysctl_exit(void) {} 11185873c083SDavid Howells #endif 11195873c083SDavid Howells 11205873c083SDavid Howells /* 1121be6e6707SDavid Howells * utils.c 1122be6e6707SDavid Howells */ 11237b674e39SDavid Howells int rxrpc_extract_addr_from_skb(struct rxrpc_local *, struct sockaddr_rxrpc *, 11247b674e39SDavid Howells struct sk_buff *); 1125be6e6707SDavid Howells 1126248f219cSDavid Howells static inline bool before(u32 seq1, u32 seq2) 1127248f219cSDavid Howells { 1128248f219cSDavid Howells return (s32)(seq1 - seq2) < 0; 1129248f219cSDavid Howells } 1130248f219cSDavid Howells static inline bool before_eq(u32 seq1, u32 seq2) 1131248f219cSDavid Howells { 1132248f219cSDavid Howells return (s32)(seq1 - seq2) <= 0; 1133248f219cSDavid Howells } 1134248f219cSDavid Howells static inline bool after(u32 seq1, u32 seq2) 1135248f219cSDavid Howells { 1136248f219cSDavid Howells return (s32)(seq1 - seq2) > 0; 1137248f219cSDavid Howells } 1138248f219cSDavid Howells static inline bool after_eq(u32 seq1, u32 seq2) 1139248f219cSDavid Howells { 1140248f219cSDavid Howells return (s32)(seq1 - seq2) >= 0; 1141248f219cSDavid Howells } 1142248f219cSDavid Howells 1143be6e6707SDavid Howells /* 114417926a79SDavid Howells * debug tracing 114517926a79SDavid Howells */ 114695c96174SEric Dumazet extern unsigned int rxrpc_debug; 114717926a79SDavid Howells 114817926a79SDavid Howells #define dbgprintk(FMT,...) \ 11499f389f4bSSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 115017926a79SDavid Howells 11510dc47877SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 11520dc47877SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 115317926a79SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 115417926a79SDavid Howells #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) 115517926a79SDavid Howells #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) 115617926a79SDavid Howells 115717926a79SDavid Howells 115817926a79SDavid Howells #if defined(__KDEBUG) 115917926a79SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 116017926a79SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 116117926a79SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 116217926a79SDavid Howells #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) 116317926a79SDavid Howells #define _net(FMT,...) knet(FMT,##__VA_ARGS__) 116417926a79SDavid Howells 116517926a79SDavid Howells #elif defined(CONFIG_AF_RXRPC_DEBUG) 116617926a79SDavid Howells #define RXRPC_DEBUG_KENTER 0x01 116717926a79SDavid Howells #define RXRPC_DEBUG_KLEAVE 0x02 116817926a79SDavid Howells #define RXRPC_DEBUG_KDEBUG 0x04 116917926a79SDavid Howells #define RXRPC_DEBUG_KPROTO 0x08 117017926a79SDavid Howells #define RXRPC_DEBUG_KNET 0x10 117117926a79SDavid Howells 117217926a79SDavid Howells #define _enter(FMT,...) \ 117317926a79SDavid Howells do { \ 117417926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ 117517926a79SDavid Howells kenter(FMT,##__VA_ARGS__); \ 117617926a79SDavid Howells } while (0) 117717926a79SDavid Howells 117817926a79SDavid Howells #define _leave(FMT,...) \ 117917926a79SDavid Howells do { \ 118017926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ 118117926a79SDavid Howells kleave(FMT,##__VA_ARGS__); \ 118217926a79SDavid Howells } while (0) 118317926a79SDavid Howells 118417926a79SDavid Howells #define _debug(FMT,...) \ 118517926a79SDavid Howells do { \ 118617926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ 118717926a79SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 118817926a79SDavid Howells } while (0) 118917926a79SDavid Howells 119017926a79SDavid Howells #define _proto(FMT,...) \ 119117926a79SDavid Howells do { \ 119217926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ 119317926a79SDavid Howells kproto(FMT,##__VA_ARGS__); \ 119417926a79SDavid Howells } while (0) 119517926a79SDavid Howells 119617926a79SDavid Howells #define _net(FMT,...) \ 119717926a79SDavid Howells do { \ 119817926a79SDavid Howells if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ 119917926a79SDavid Howells knet(FMT,##__VA_ARGS__); \ 120017926a79SDavid Howells } while (0) 120117926a79SDavid Howells 120217926a79SDavid Howells #else 120312fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 120412fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 120512fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 120612fdff3fSDavid Howells #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) 120712fdff3fSDavid Howells #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) 120817926a79SDavid Howells #endif 120917926a79SDavid Howells 121017926a79SDavid Howells /* 121117926a79SDavid Howells * debug assertion checking 121217926a79SDavid Howells */ 121317926a79SDavid Howells #if 1 // defined(__KDEBUGALL) 121417926a79SDavid Howells 121517926a79SDavid Howells #define ASSERT(X) \ 121617926a79SDavid Howells do { \ 121717926a79SDavid Howells if (unlikely(!(X))) { \ 12189b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 121917926a79SDavid Howells BUG(); \ 122017926a79SDavid Howells } \ 122117926a79SDavid Howells } while (0) 122217926a79SDavid Howells 122317926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 122417926a79SDavid Howells do { \ 1225cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1226cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 12279b6d5398SJoe Perches if (unlikely(!(_x OP _y))) { \ 12289b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1229cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1230cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 123117926a79SDavid Howells BUG(); \ 123217926a79SDavid Howells } \ 123317926a79SDavid Howells } while (0) 123417926a79SDavid Howells 123517926a79SDavid Howells #define ASSERTIF(C, X) \ 123617926a79SDavid Howells do { \ 123717926a79SDavid Howells if (unlikely((C) && !(X))) { \ 12389b6d5398SJoe Perches pr_err("Assertion failed\n"); \ 123917926a79SDavid Howells BUG(); \ 124017926a79SDavid Howells } \ 124117926a79SDavid Howells } while (0) 124217926a79SDavid Howells 124317926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 124417926a79SDavid Howells do { \ 1245cf13258fSDavid Howells __typeof__(X) _x = (X); \ 1246cf13258fSDavid Howells __typeof__(Y) _y = (__typeof__(X))(Y); \ 12479b6d5398SJoe Perches if (unlikely((C) && !(_x OP _y))) { \ 12489b6d5398SJoe Perches pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1249cf13258fSDavid Howells (unsigned long)_x, (unsigned long)_x, #OP, \ 1250cf13258fSDavid Howells (unsigned long)_y, (unsigned long)_y); \ 125117926a79SDavid Howells BUG(); \ 125217926a79SDavid Howells } \ 125317926a79SDavid Howells } while (0) 125417926a79SDavid Howells 125517926a79SDavid Howells #else 125617926a79SDavid Howells 125717926a79SDavid Howells #define ASSERT(X) \ 125817926a79SDavid Howells do { \ 125917926a79SDavid Howells } while (0) 126017926a79SDavid Howells 126117926a79SDavid Howells #define ASSERTCMP(X, OP, Y) \ 126217926a79SDavid Howells do { \ 126317926a79SDavid Howells } while (0) 126417926a79SDavid Howells 126517926a79SDavid Howells #define ASSERTIF(C, X) \ 126617926a79SDavid Howells do { \ 126717926a79SDavid Howells } while (0) 126817926a79SDavid Howells 126917926a79SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 127017926a79SDavid Howells do { \ 127117926a79SDavid Howells } while (0) 127217926a79SDavid Howells 127317926a79SDavid Howells #endif /* __KDEBUGALL */ 1274