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1264 lines
42 KiB
1264 lines
42 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* AF_RXRPC internal definitions |
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* |
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. |
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* Written by David Howells ([email protected]) |
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*/ |
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#include <linux/atomic.h> |
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#include <linux/seqlock.h> |
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#include <linux/win_minmax.h> |
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#include <net/net_namespace.h> |
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#include <net/netns/generic.h> |
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#include <net/sock.h> |
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#include <net/af_rxrpc.h> |
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#include <keys/rxrpc-type.h> |
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#include "protocol.h" |
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#if 0 |
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#define CHECK_SLAB_OKAY(X) \ |
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BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \ |
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(POISON_FREE << 8 | POISON_FREE)) |
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#else |
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#define CHECK_SLAB_OKAY(X) do {} while (0) |
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#endif |
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#define FCRYPT_BSIZE 8 |
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struct rxrpc_crypt { |
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union { |
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u8 x[FCRYPT_BSIZE]; |
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__be32 n[2]; |
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}; |
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} __attribute__((aligned(8))); |
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#define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS)) |
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#define rxrpc_queue_delayed_work(WS,D) \ |
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queue_delayed_work(rxrpc_workqueue, (WS), (D)) |
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struct key_preparsed_payload; |
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struct rxrpc_connection; |
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/* |
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* Mark applied to socket buffers in skb->mark. skb->priority is used |
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* to pass supplementary information. |
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*/ |
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enum rxrpc_skb_mark { |
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RXRPC_SKB_MARK_REJECT_BUSY, /* Reject with BUSY */ |
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RXRPC_SKB_MARK_REJECT_ABORT, /* Reject with ABORT (code in skb->priority) */ |
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}; |
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/* |
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* sk_state for RxRPC sockets |
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*/ |
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enum { |
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RXRPC_UNBOUND = 0, |
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RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */ |
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RXRPC_CLIENT_BOUND, /* client local address bound */ |
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RXRPC_SERVER_BOUND, /* server local address bound */ |
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RXRPC_SERVER_BOUND2, /* second server local address bound */ |
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RXRPC_SERVER_LISTENING, /* server listening for connections */ |
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RXRPC_SERVER_LISTEN_DISABLED, /* server listening disabled */ |
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RXRPC_CLOSE, /* socket is being closed */ |
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}; |
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/* |
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* Per-network namespace data. |
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*/ |
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struct rxrpc_net { |
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struct proc_dir_entry *proc_net; /* Subdir in /proc/net */ |
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u32 epoch; /* Local epoch for detecting local-end reset */ |
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struct list_head calls; /* List of calls active in this namespace */ |
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rwlock_t call_lock; /* Lock for ->calls */ |
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atomic_t nr_calls; /* Count of allocated calls */ |
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atomic_t nr_conns; |
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struct list_head conn_proc_list; /* List of conns in this namespace for proc */ |
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struct list_head service_conns; /* Service conns in this namespace */ |
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rwlock_t conn_lock; /* Lock for ->conn_proc_list, ->service_conns */ |
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struct work_struct service_conn_reaper; |
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struct timer_list service_conn_reap_timer; |
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bool live; |
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bool kill_all_client_conns; |
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atomic_t nr_client_conns; |
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spinlock_t client_conn_cache_lock; /* Lock for ->*_client_conns */ |
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spinlock_t client_conn_discard_lock; /* Prevent multiple discarders */ |
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struct list_head idle_client_conns; |
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struct work_struct client_conn_reaper; |
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struct timer_list client_conn_reap_timer; |
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struct list_head local_endpoints; |
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struct mutex local_mutex; /* Lock for ->local_endpoints */ |
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DECLARE_HASHTABLE (peer_hash, 10); |
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spinlock_t peer_hash_lock; /* Lock for ->peer_hash */ |
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#define RXRPC_KEEPALIVE_TIME 20 /* NAT keepalive time in seconds */ |
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u8 peer_keepalive_cursor; |
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time64_t peer_keepalive_base; |
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struct list_head peer_keepalive[32]; |
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struct list_head peer_keepalive_new; |
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struct timer_list peer_keepalive_timer; |
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struct work_struct peer_keepalive_work; |
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}; |
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/* |
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* Service backlog preallocation. |
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* |
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* This contains circular buffers of preallocated peers, connections and calls |
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* for incoming service calls and their head and tail pointers. This allows |
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* calls to be set up in the data_ready handler, thereby avoiding the need to |
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* shuffle packets around so much. |
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*/ |
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struct rxrpc_backlog { |
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unsigned short peer_backlog_head; |
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unsigned short peer_backlog_tail; |
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unsigned short conn_backlog_head; |
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unsigned short conn_backlog_tail; |
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unsigned short call_backlog_head; |
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unsigned short call_backlog_tail; |
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#define RXRPC_BACKLOG_MAX 32 |
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struct rxrpc_peer *peer_backlog[RXRPC_BACKLOG_MAX]; |
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struct rxrpc_connection *conn_backlog[RXRPC_BACKLOG_MAX]; |
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struct rxrpc_call *call_backlog[RXRPC_BACKLOG_MAX]; |
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}; |
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/* |
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* RxRPC socket definition |
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*/ |
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struct rxrpc_sock { |
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/* WARNING: sk has to be the first member */ |
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struct sock sk; |
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rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */ |
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rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */ |
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struct rxrpc_local *local; /* local endpoint */ |
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struct rxrpc_backlog *backlog; /* Preallocation for services */ |
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spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */ |
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struct list_head sock_calls; /* List of calls owned by this socket */ |
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struct list_head to_be_accepted; /* calls awaiting acceptance */ |
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struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */ |
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rwlock_t recvmsg_lock; /* Lock for recvmsg_q */ |
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struct key *key; /* security for this socket */ |
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struct key *securities; /* list of server security descriptors */ |
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struct rb_root calls; /* User ID -> call mapping */ |
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unsigned long flags; |
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#define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ |
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rwlock_t call_lock; /* lock for calls */ |
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u32 min_sec_level; /* minimum security level */ |
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#define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT |
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bool exclusive; /* Exclusive connection for a client socket */ |
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u16 second_service; /* Additional service bound to the endpoint */ |
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struct { |
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/* Service upgrade information */ |
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u16 from; /* Service ID to upgrade (if not 0) */ |
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u16 to; /* service ID to upgrade to */ |
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} service_upgrade; |
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sa_family_t family; /* Protocol family created with */ |
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struct sockaddr_rxrpc srx; /* Primary Service/local addresses */ |
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struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ |
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}; |
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#define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) |
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/* |
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* CPU-byteorder normalised Rx packet header. |
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*/ |
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struct rxrpc_host_header { |
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u32 epoch; /* client boot timestamp */ |
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u32 cid; /* connection and channel ID */ |
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u32 callNumber; /* call ID (0 for connection-level packets) */ |
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u32 seq; /* sequence number of pkt in call stream */ |
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u32 serial; /* serial number of pkt sent to network */ |
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u8 type; /* packet type */ |
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u8 flags; /* packet flags */ |
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u8 userStatus; /* app-layer defined status */ |
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u8 securityIndex; /* security protocol ID */ |
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union { |
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u16 _rsvd; /* reserved */ |
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u16 cksum; /* kerberos security checksum */ |
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}; |
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u16 serviceId; /* service ID */ |
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} __packed; |
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/* |
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* RxRPC socket buffer private variables |
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* - max 48 bytes (struct sk_buff::cb) |
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*/ |
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struct rxrpc_skb_priv { |
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atomic_t nr_ring_pins; /* Number of rxtx ring pins */ |
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u8 nr_subpackets; /* Number of subpackets */ |
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u8 rx_flags; /* Received packet flags */ |
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#define RXRPC_SKB_INCL_LAST 0x01 /* - Includes last packet */ |
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#define RXRPC_SKB_TX_BUFFER 0x02 /* - Is transmit buffer */ |
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union { |
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int remain; /* amount of space remaining for next write */ |
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/* List of requested ACKs on subpackets */ |
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unsigned long rx_req_ack[(RXRPC_MAX_NR_JUMBO + BITS_PER_LONG - 1) / |
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BITS_PER_LONG]; |
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}; |
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struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ |
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}; |
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#define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) |
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/* |
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* RxRPC security module interface |
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*/ |
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struct rxrpc_security { |
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const char *name; /* name of this service */ |
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u8 security_index; /* security type provided */ |
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u32 no_key_abort; /* Abort code indicating no key */ |
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/* Initialise a security service */ |
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int (*init)(void); |
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/* Clean up a security service */ |
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void (*exit)(void); |
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/* Parse the information from a server key */ |
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int (*preparse_server_key)(struct key_preparsed_payload *); |
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/* Clean up the preparse buffer after parsing a server key */ |
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void (*free_preparse_server_key)(struct key_preparsed_payload *); |
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/* Destroy the payload of a server key */ |
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void (*destroy_server_key)(struct key *); |
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/* Describe a server key */ |
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void (*describe_server_key)(const struct key *, struct seq_file *); |
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/* initialise a connection's security */ |
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int (*init_connection_security)(struct rxrpc_connection *, |
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struct rxrpc_key_token *); |
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/* Work out how much data we can store in a packet, given an estimate |
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* of the amount of data remaining. |
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*/ |
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int (*how_much_data)(struct rxrpc_call *, size_t, |
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size_t *, size_t *, size_t *); |
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/* impose security on a packet */ |
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int (*secure_packet)(struct rxrpc_call *, struct sk_buff *, size_t); |
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/* verify the security on a received packet */ |
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int (*verify_packet)(struct rxrpc_call *, struct sk_buff *, |
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unsigned int, unsigned int, rxrpc_seq_t, u16); |
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/* Free crypto request on a call */ |
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void (*free_call_crypto)(struct rxrpc_call *); |
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/* Locate the data in a received packet that has been verified. */ |
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void (*locate_data)(struct rxrpc_call *, struct sk_buff *, |
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unsigned int *, unsigned int *); |
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/* issue a challenge */ |
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int (*issue_challenge)(struct rxrpc_connection *); |
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/* respond to a challenge */ |
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int (*respond_to_challenge)(struct rxrpc_connection *, |
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struct sk_buff *, |
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u32 *); |
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/* verify a response */ |
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int (*verify_response)(struct rxrpc_connection *, |
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struct sk_buff *, |
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u32 *); |
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/* clear connection security */ |
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void (*clear)(struct rxrpc_connection *); |
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}; |
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/* |
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* RxRPC local transport endpoint description |
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* - owned by a single AF_RXRPC socket |
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* - pointed to by transport socket struct sk_user_data |
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*/ |
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struct rxrpc_local { |
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struct rcu_head rcu; |
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atomic_t active_users; /* Number of users of the local endpoint */ |
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atomic_t usage; /* Number of references to the structure */ |
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struct rxrpc_net *rxnet; /* The network ns in which this resides */ |
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struct list_head link; |
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struct socket *socket; /* my UDP socket */ |
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struct work_struct processor; |
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struct rxrpc_sock __rcu *service; /* Service(s) listening on this endpoint */ |
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struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ |
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struct sk_buff_head reject_queue; /* packets awaiting rejection */ |
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struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */ |
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struct rb_root client_bundles; /* Client connection bundles by socket params */ |
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spinlock_t client_bundles_lock; /* Lock for client_bundles */ |
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spinlock_t lock; /* access lock */ |
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rwlock_t services_lock; /* lock for services list */ |
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int debug_id; /* debug ID for printks */ |
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bool dead; |
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bool service_closed; /* Service socket closed */ |
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struct sockaddr_rxrpc srx; /* local address */ |
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}; |
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/* |
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* RxRPC remote transport endpoint definition |
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* - matched by local endpoint, remote port, address and protocol type |
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*/ |
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struct rxrpc_peer { |
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struct rcu_head rcu; /* This must be first */ |
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atomic_t usage; |
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unsigned long hash_key; |
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struct hlist_node hash_link; |
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struct rxrpc_local *local; |
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struct hlist_head error_targets; /* targets for net error distribution */ |
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struct rb_root service_conns; /* Service connections */ |
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struct list_head keepalive_link; /* Link in net->peer_keepalive[] */ |
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time64_t last_tx_at; /* Last time packet sent here */ |
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seqlock_t service_conn_lock; |
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spinlock_t lock; /* access lock */ |
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unsigned int if_mtu; /* interface MTU for this peer */ |
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unsigned int mtu; /* network MTU for this peer */ |
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unsigned int maxdata; /* data size (MTU - hdrsize) */ |
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unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ |
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int debug_id; /* debug ID for printks */ |
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struct sockaddr_rxrpc srx; /* remote address */ |
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/* calculated RTT cache */ |
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#define RXRPC_RTT_CACHE_SIZE 32 |
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spinlock_t rtt_input_lock; /* RTT lock for input routine */ |
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ktime_t rtt_last_req; /* Time of last RTT request */ |
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unsigned int rtt_count; /* Number of samples we've got */ |
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u32 srtt_us; /* smoothed round trip time << 3 in usecs */ |
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u32 mdev_us; /* medium deviation */ |
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u32 mdev_max_us; /* maximal mdev for the last rtt period */ |
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u32 rttvar_us; /* smoothed mdev_max */ |
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u32 rto_j; /* Retransmission timeout in jiffies */ |
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u8 backoff; /* Backoff timeout */ |
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u8 cong_cwnd; /* Congestion window size */ |
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}; |
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/* |
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* Keys for matching a connection. |
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*/ |
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struct rxrpc_conn_proto { |
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union { |
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struct { |
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u32 epoch; /* epoch of this connection */ |
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u32 cid; /* connection ID */ |
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}; |
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u64 index_key; |
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}; |
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}; |
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struct rxrpc_conn_parameters { |
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struct rxrpc_local *local; /* Representation of local endpoint */ |
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struct rxrpc_peer *peer; /* Remote endpoint */ |
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struct key *key; /* Security details */ |
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bool exclusive; /* T if conn is exclusive */ |
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bool upgrade; /* T if service ID can be upgraded */ |
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u16 service_id; /* Service ID for this connection */ |
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u32 security_level; /* Security level selected */ |
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}; |
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/* |
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* Bits in the connection flags. |
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*/ |
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enum rxrpc_conn_flag { |
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RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ |
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RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ |
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RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ |
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RXRPC_CONN_PROBING_FOR_UPGRADE, /* Probing for service upgrade */ |
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RXRPC_CONN_FINAL_ACK_0, /* Need final ACK for channel 0 */ |
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RXRPC_CONN_FINAL_ACK_1, /* Need final ACK for channel 1 */ |
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RXRPC_CONN_FINAL_ACK_2, /* Need final ACK for channel 2 */ |
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RXRPC_CONN_FINAL_ACK_3, /* Need final ACK for channel 3 */ |
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}; |
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#define RXRPC_CONN_FINAL_ACK_MASK ((1UL << RXRPC_CONN_FINAL_ACK_0) | \ |
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(1UL << RXRPC_CONN_FINAL_ACK_1) | \ |
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(1UL << RXRPC_CONN_FINAL_ACK_2) | \ |
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(1UL << RXRPC_CONN_FINAL_ACK_3)) |
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/* |
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* Events that can be raised upon a connection. |
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*/ |
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enum rxrpc_conn_event { |
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RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ |
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}; |
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/* |
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* The connection protocol state. |
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*/ |
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enum rxrpc_conn_proto_state { |
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RXRPC_CONN_UNUSED, /* Connection not yet attempted */ |
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RXRPC_CONN_CLIENT, /* Client connection */ |
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RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ |
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RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ |
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RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ |
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RXRPC_CONN_SERVICE, /* Service secured connection */ |
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RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */ |
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RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */ |
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RXRPC_CONN__NR_STATES |
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}; |
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/* |
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* RxRPC client connection bundle. |
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*/ |
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struct rxrpc_bundle { |
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struct rxrpc_conn_parameters params; |
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atomic_t usage; |
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unsigned int debug_id; |
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bool try_upgrade; /* True if the bundle is attempting upgrade */ |
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bool alloc_conn; /* True if someone's getting a conn */ |
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short alloc_error; /* Error from last conn allocation */ |
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spinlock_t channel_lock; |
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struct rb_node local_node; /* Node in local->client_conns */ |
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struct list_head waiting_calls; /* Calls waiting for channels */ |
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unsigned long avail_chans; /* Mask of available channels */ |
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struct rxrpc_connection *conns[4]; /* The connections in the bundle (max 4) */ |
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}; |
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/* |
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* RxRPC connection definition |
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* - matched by { local, peer, epoch, conn_id, direction } |
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* - each connection can only handle four simultaneous calls |
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*/ |
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struct rxrpc_connection { |
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struct rxrpc_conn_proto proto; |
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struct rxrpc_conn_parameters params; |
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atomic_t usage; |
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struct rcu_head rcu; |
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struct list_head cache_link; |
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unsigned char act_chans; /* Mask of active channels */ |
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struct rxrpc_channel { |
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unsigned long final_ack_at; /* Time at which to issue final ACK */ |
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struct rxrpc_call __rcu *call; /* Active call */ |
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unsigned int call_debug_id; /* call->debug_id */ |
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u32 call_id; /* ID of current call */ |
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u32 call_counter; /* Call ID counter */ |
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u32 last_call; /* ID of last call */ |
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u8 last_type; /* Type of last packet */ |
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union { |
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u32 last_seq; |
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u32 last_abort; |
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}; |
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} channels[RXRPC_MAXCALLS]; |
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struct timer_list timer; /* Conn event timer */ |
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struct work_struct processor; /* connection event processor */ |
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struct rxrpc_bundle *bundle; /* Client connection bundle */ |
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struct rb_node service_node; /* Node in peer->service_conns */ |
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struct list_head proc_link; /* link in procfs list */ |
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struct list_head link; /* link in master connection list */ |
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struct sk_buff_head rx_queue; /* received conn-level packets */ |
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const struct rxrpc_security *security; /* applied security module */ |
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union { |
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struct { |
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struct crypto_sync_skcipher *cipher; /* encryption handle */ |
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struct rxrpc_crypt csum_iv; /* packet checksum base */ |
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u32 nonce; /* response re-use preventer */ |
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} rxkad; |
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}; |
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unsigned long flags; |
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unsigned long events; |
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unsigned long idle_timestamp; /* Time at which last became idle */ |
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spinlock_t state_lock; /* state-change lock */ |
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enum rxrpc_conn_proto_state state; /* current state of connection */ |
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u32 abort_code; /* Abort code of connection abort */ |
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int debug_id; /* debug ID for printks */ |
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atomic_t serial; /* packet serial number counter */ |
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unsigned int hi_serial; /* highest serial number received */ |
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u32 service_id; /* Service ID, possibly upgraded */ |
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u8 security_ix; /* security type */ |
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u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ |
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u8 bundle_shift; /* Index into bundle->avail_chans */ |
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short error; /* Local error code */ |
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}; |
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static inline bool rxrpc_to_server(const struct rxrpc_skb_priv *sp) |
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{ |
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return sp->hdr.flags & RXRPC_CLIENT_INITIATED; |
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} |
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static inline bool rxrpc_to_client(const struct rxrpc_skb_priv *sp) |
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{ |
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return !rxrpc_to_server(sp); |
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} |
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/* |
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* Flags in call->flags. |
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*/ |
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enum rxrpc_call_flag { |
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RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ |
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RXRPC_CALL_HAS_USERID, /* has a user ID attached */ |
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RXRPC_CALL_IS_SERVICE, /* Call is service call */ |
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RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ |
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RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ |
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RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ |
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RXRPC_CALL_SEND_PING, /* A ping will need to be sent */ |
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RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */ |
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RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */ |
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RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */ |
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RXRPC_CALL_RX_UNDERRUN, /* Got data underrun */ |
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RXRPC_CALL_DISCONNECTED, /* The call has been disconnected */ |
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RXRPC_CALL_KERNEL, /* The call was made by the kernel */ |
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RXRPC_CALL_UPGRADE, /* Service upgrade was requested for the call */ |
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}; |
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|
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/* |
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* Events that can be raised on a call. |
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*/ |
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enum rxrpc_call_event { |
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RXRPC_CALL_EV_ACK, /* need to generate ACK */ |
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RXRPC_CALL_EV_ABORT, /* need to generate abort */ |
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RXRPC_CALL_EV_RESEND, /* Tx resend required */ |
|
RXRPC_CALL_EV_PING, /* Ping send required */ |
|
RXRPC_CALL_EV_EXPIRED, /* Expiry occurred */ |
|
RXRPC_CALL_EV_ACK_LOST, /* ACK may be lost, send ping */ |
|
}; |
|
|
|
/* |
|
* The states that a call can be in. |
|
*/ |
|
enum rxrpc_call_state { |
|
RXRPC_CALL_UNINITIALISED, |
|
RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ |
|
RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ |
|
RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ |
|
RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ |
|
RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ |
|
RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ |
|
RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ |
|
RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ |
|
RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ |
|
RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ |
|
RXRPC_CALL_COMPLETE, /* - call complete */ |
|
NR__RXRPC_CALL_STATES |
|
}; |
|
|
|
/* |
|
* Call completion condition (state == RXRPC_CALL_COMPLETE). |
|
*/ |
|
enum rxrpc_call_completion { |
|
RXRPC_CALL_SUCCEEDED, /* - Normal termination */ |
|
RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ |
|
RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ |
|
RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */ |
|
RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ |
|
NR__RXRPC_CALL_COMPLETIONS |
|
}; |
|
|
|
/* |
|
* Call Tx congestion management modes. |
|
*/ |
|
enum rxrpc_congest_mode { |
|
RXRPC_CALL_SLOW_START, |
|
RXRPC_CALL_CONGEST_AVOIDANCE, |
|
RXRPC_CALL_PACKET_LOSS, |
|
RXRPC_CALL_FAST_RETRANSMIT, |
|
NR__RXRPC_CONGEST_MODES |
|
}; |
|
|
|
/* |
|
* RxRPC call definition |
|
* - matched by { connection, call_id } |
|
*/ |
|
struct rxrpc_call { |
|
struct rcu_head rcu; |
|
struct rxrpc_connection *conn; /* connection carrying call */ |
|
struct rxrpc_peer *peer; /* Peer record for remote address */ |
|
struct rxrpc_sock __rcu *socket; /* socket responsible */ |
|
struct rxrpc_net *rxnet; /* Network namespace to which call belongs */ |
|
const struct rxrpc_security *security; /* applied security module */ |
|
struct mutex user_mutex; /* User access mutex */ |
|
unsigned long ack_at; /* When deferred ACK needs to happen */ |
|
unsigned long ack_lost_at; /* When ACK is figured as lost */ |
|
unsigned long resend_at; /* When next resend needs to happen */ |
|
unsigned long ping_at; /* When next to send a ping */ |
|
unsigned long keepalive_at; /* When next to send a keepalive ping */ |
|
unsigned long expect_rx_by; /* When we expect to get a packet by */ |
|
unsigned long expect_req_by; /* When we expect to get a request DATA packet by */ |
|
unsigned long expect_term_by; /* When we expect call termination by */ |
|
u32 next_rx_timo; /* Timeout for next Rx packet (jif) */ |
|
u32 next_req_timo; /* Timeout for next Rx request packet (jif) */ |
|
struct skcipher_request *cipher_req; /* Packet cipher request buffer */ |
|
struct timer_list timer; /* Combined event timer */ |
|
struct work_struct processor; /* Event processor */ |
|
rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ |
|
struct list_head link; /* link in master call list */ |
|
struct list_head chan_wait_link; /* Link in conn->bundle->waiting_calls */ |
|
struct hlist_node error_link; /* link in error distribution list */ |
|
struct list_head accept_link; /* Link in rx->acceptq */ |
|
struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ |
|
struct list_head sock_link; /* Link in rx->sock_calls */ |
|
struct rb_node sock_node; /* Node in rx->calls */ |
|
struct sk_buff *tx_pending; /* Tx socket buffer being filled */ |
|
wait_queue_head_t waitq; /* Wait queue for channel or Tx */ |
|
s64 tx_total_len; /* Total length left to be transmitted (or -1) */ |
|
__be32 crypto_buf[2]; /* Temporary packet crypto buffer */ |
|
unsigned long user_call_ID; /* user-defined call ID */ |
|
unsigned long flags; |
|
unsigned long events; |
|
spinlock_t lock; |
|
spinlock_t notify_lock; /* Kernel notification lock */ |
|
rwlock_t state_lock; /* lock for state transition */ |
|
u32 abort_code; /* Local/remote abort code */ |
|
int error; /* Local error incurred */ |
|
enum rxrpc_call_state state; /* current state of call */ |
|
enum rxrpc_call_completion completion; /* Call completion condition */ |
|
atomic_t usage; |
|
u16 service_id; /* service ID */ |
|
u8 security_ix; /* Security type */ |
|
enum rxrpc_interruptibility interruptibility; /* At what point call may be interrupted */ |
|
u32 call_id; /* call ID on connection */ |
|
u32 cid; /* connection ID plus channel index */ |
|
int debug_id; /* debug ID for printks */ |
|
unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ |
|
unsigned short rx_pkt_len; /* Current recvmsg packet len */ |
|
bool rx_pkt_last; /* Current recvmsg packet is last */ |
|
|
|
/* Rx/Tx circular buffer, depending on phase. |
|
* |
|
* In the Rx phase, packets are annotated with 0 or the number of the |
|
* segment of a jumbo packet each buffer refers to. There can be up to |
|
* 47 segments in a maximum-size UDP packet. |
|
* |
|
* In the Tx phase, packets are annotated with which buffers have been |
|
* acked. |
|
*/ |
|
#define RXRPC_RXTX_BUFF_SIZE 64 |
|
#define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1) |
|
#define RXRPC_INIT_RX_WINDOW_SIZE 63 |
|
struct sk_buff **rxtx_buffer; |
|
u8 *rxtx_annotations; |
|
#define RXRPC_TX_ANNO_ACK 0 |
|
#define RXRPC_TX_ANNO_UNACK 1 |
|
#define RXRPC_TX_ANNO_NAK 2 |
|
#define RXRPC_TX_ANNO_RETRANS 3 |
|
#define RXRPC_TX_ANNO_MASK 0x03 |
|
#define RXRPC_TX_ANNO_LAST 0x04 |
|
#define RXRPC_TX_ANNO_RESENT 0x08 |
|
|
|
#define RXRPC_RX_ANNO_SUBPACKET 0x3f /* Subpacket number in jumbogram */ |
|
#define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ |
|
rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but |
|
* not hard-ACK'd packet follows this. |
|
*/ |
|
rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ |
|
u16 tx_backoff; /* Delay to insert due to Tx failure */ |
|
|
|
/* TCP-style slow-start congestion control [RFC5681]. Since the SMSS |
|
* is fixed, we keep these numbers in terms of segments (ie. DATA |
|
* packets) rather than bytes. |
|
*/ |
|
#define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN |
|
u8 cong_cwnd; /* Congestion window size */ |
|
u8 cong_extra; /* Extra to send for congestion management */ |
|
u8 cong_ssthresh; /* Slow-start threshold */ |
|
enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */ |
|
u8 cong_dup_acks; /* Count of ACKs showing missing packets */ |
|
u8 cong_cumul_acks; /* Cumulative ACK count */ |
|
ktime_t cong_tstamp; /* Last time cwnd was changed */ |
|
|
|
rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not |
|
* consumed packet follows this. |
|
*/ |
|
rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */ |
|
rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */ |
|
rxrpc_serial_t rx_serial; /* Highest serial received for this call */ |
|
u8 rx_winsize; /* Size of Rx window */ |
|
u8 tx_winsize; /* Maximum size of Tx window */ |
|
bool tx_phase; /* T if transmission phase, F if receive phase */ |
|
u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */ |
|
|
|
spinlock_t input_lock; /* Lock for packet input to this call */ |
|
|
|
/* receive-phase ACK management */ |
|
u8 ackr_reason; /* reason to ACK */ |
|
rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ |
|
rxrpc_serial_t ackr_first_seq; /* first sequence number received */ |
|
rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ |
|
rxrpc_seq_t ackr_consumed; /* Highest packet shown consumed */ |
|
rxrpc_seq_t ackr_seen; /* Highest packet shown seen */ |
|
|
|
/* RTT management */ |
|
rxrpc_serial_t rtt_serial[4]; /* Serial number of DATA or PING sent */ |
|
ktime_t rtt_sent_at[4]; /* Time packet sent */ |
|
unsigned long rtt_avail; /* Mask of available slots in bits 0-3, |
|
* Mask of pending samples in 8-11 */ |
|
#define RXRPC_CALL_RTT_AVAIL_MASK 0xf |
|
#define RXRPC_CALL_RTT_PEND_SHIFT 8 |
|
|
|
/* transmission-phase ACK management */ |
|
ktime_t acks_latest_ts; /* Timestamp of latest ACK received */ |
|
rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */ |
|
rxrpc_seq_t acks_lost_top; /* tx_top at the time lost-ack ping sent */ |
|
rxrpc_serial_t acks_lost_ping; /* Serial number of probe ACK */ |
|
}; |
|
|
|
/* |
|
* Summary of a new ACK and the changes it made to the Tx buffer packet states. |
|
*/ |
|
struct rxrpc_ack_summary { |
|
u8 ack_reason; |
|
u8 nr_acks; /* Number of ACKs in packet */ |
|
u8 nr_nacks; /* Number of NACKs in packet */ |
|
u8 nr_new_acks; /* Number of new ACKs in packet */ |
|
u8 nr_new_nacks; /* Number of new NACKs in packet */ |
|
u8 nr_rot_new_acks; /* Number of rotated new ACKs */ |
|
bool new_low_nack; /* T if new low NACK found */ |
|
bool retrans_timeo; /* T if reTx due to timeout happened */ |
|
u8 flight_size; /* Number of unreceived transmissions */ |
|
/* Place to stash values for tracing */ |
|
enum rxrpc_congest_mode mode:8; |
|
u8 cwnd; |
|
u8 ssthresh; |
|
u8 dup_acks; |
|
u8 cumulative_acks; |
|
}; |
|
|
|
/* |
|
* sendmsg() cmsg-specified parameters. |
|
*/ |
|
enum rxrpc_command { |
|
RXRPC_CMD_SEND_DATA, /* send data message */ |
|
RXRPC_CMD_SEND_ABORT, /* request abort generation */ |
|
RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */ |
|
RXRPC_CMD_CHARGE_ACCEPT, /* [server] charge accept preallocation */ |
|
}; |
|
|
|
struct rxrpc_call_params { |
|
s64 tx_total_len; /* Total Tx data length (if send data) */ |
|
unsigned long user_call_ID; /* User's call ID */ |
|
struct { |
|
u32 hard; /* Maximum lifetime (sec) */ |
|
u32 idle; /* Max time since last data packet (msec) */ |
|
u32 normal; /* Max time since last call packet (msec) */ |
|
} timeouts; |
|
u8 nr_timeouts; /* Number of timeouts specified */ |
|
bool kernel; /* T if kernel is making the call */ |
|
enum rxrpc_interruptibility interruptibility; /* How is interruptible is the call? */ |
|
}; |
|
|
|
struct rxrpc_send_params { |
|
struct rxrpc_call_params call; |
|
u32 abort_code; /* Abort code to Tx (if abort) */ |
|
enum rxrpc_command command : 8; /* The command to implement */ |
|
bool exclusive; /* Shared or exclusive call */ |
|
bool upgrade; /* If the connection is upgradeable */ |
|
}; |
|
|
|
#include <trace/events/rxrpc.h> |
|
|
|
/* |
|
* af_rxrpc.c |
|
*/ |
|
extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs; |
|
extern struct workqueue_struct *rxrpc_workqueue; |
|
|
|
/* |
|
* call_accept.c |
|
*/ |
|
int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); |
|
void rxrpc_discard_prealloc(struct rxrpc_sock *); |
|
struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *, |
|
struct rxrpc_sock *, |
|
struct sk_buff *); |
|
void rxrpc_accept_incoming_calls(struct rxrpc_local *); |
|
int rxrpc_user_charge_accept(struct rxrpc_sock *, unsigned long); |
|
|
|
/* |
|
* call_event.c |
|
*/ |
|
void rxrpc_propose_ACK(struct rxrpc_call *, u8, u32, bool, bool, |
|
enum rxrpc_propose_ack_trace); |
|
void rxrpc_process_call(struct work_struct *); |
|
|
|
static inline void rxrpc_reduce_call_timer(struct rxrpc_call *call, |
|
unsigned long expire_at, |
|
unsigned long now, |
|
enum rxrpc_timer_trace why) |
|
{ |
|
trace_rxrpc_timer(call, why, now); |
|
timer_reduce(&call->timer, expire_at); |
|
} |
|
|
|
/* |
|
* call_object.c |
|
*/ |
|
extern const char *const rxrpc_call_states[]; |
|
extern const char *const rxrpc_call_completions[]; |
|
extern unsigned int rxrpc_max_call_lifetime; |
|
extern struct kmem_cache *rxrpc_call_jar; |
|
|
|
struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); |
|
struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *, gfp_t, unsigned int); |
|
struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, |
|
struct rxrpc_conn_parameters *, |
|
struct sockaddr_rxrpc *, |
|
struct rxrpc_call_params *, gfp_t, |
|
unsigned int); |
|
void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, |
|
struct sk_buff *); |
|
void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); |
|
void rxrpc_release_calls_on_socket(struct rxrpc_sock *); |
|
bool __rxrpc_queue_call(struct rxrpc_call *); |
|
bool rxrpc_queue_call(struct rxrpc_call *); |
|
void rxrpc_see_call(struct rxrpc_call *); |
|
void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); |
|
void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); |
|
void rxrpc_cleanup_call(struct rxrpc_call *); |
|
void rxrpc_destroy_all_calls(struct rxrpc_net *); |
|
|
|
static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) |
|
{ |
|
return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); |
|
} |
|
|
|
static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) |
|
{ |
|
return !rxrpc_is_service_call(call); |
|
} |
|
|
|
/* |
|
* conn_client.c |
|
*/ |
|
extern unsigned int rxrpc_reap_client_connections; |
|
extern unsigned long rxrpc_conn_idle_client_expiry; |
|
extern unsigned long rxrpc_conn_idle_client_fast_expiry; |
|
extern struct idr rxrpc_client_conn_ids; |
|
|
|
void rxrpc_destroy_client_conn_ids(void); |
|
struct rxrpc_bundle *rxrpc_get_bundle(struct rxrpc_bundle *); |
|
void rxrpc_put_bundle(struct rxrpc_bundle *); |
|
int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_call *, |
|
struct rxrpc_conn_parameters *, struct sockaddr_rxrpc *, |
|
gfp_t); |
|
void rxrpc_expose_client_call(struct rxrpc_call *); |
|
void rxrpc_disconnect_client_call(struct rxrpc_bundle *, struct rxrpc_call *); |
|
void rxrpc_put_client_conn(struct rxrpc_connection *); |
|
void rxrpc_discard_expired_client_conns(struct work_struct *); |
|
void rxrpc_destroy_all_client_connections(struct rxrpc_net *); |
|
void rxrpc_clean_up_local_conns(struct rxrpc_local *); |
|
|
|
/* |
|
* conn_event.c |
|
*/ |
|
void rxrpc_process_connection(struct work_struct *); |
|
void rxrpc_process_delayed_final_acks(struct rxrpc_connection *, bool); |
|
|
|
/* |
|
* conn_object.c |
|
*/ |
|
extern unsigned int rxrpc_connection_expiry; |
|
extern unsigned int rxrpc_closed_conn_expiry; |
|
|
|
struct rxrpc_connection *rxrpc_alloc_connection(gfp_t); |
|
struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *, |
|
struct sk_buff *, |
|
struct rxrpc_peer **); |
|
void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); |
|
void rxrpc_disconnect_call(struct rxrpc_call *); |
|
void rxrpc_kill_connection(struct rxrpc_connection *); |
|
bool rxrpc_queue_conn(struct rxrpc_connection *); |
|
void rxrpc_see_connection(struct rxrpc_connection *); |
|
struct rxrpc_connection *rxrpc_get_connection(struct rxrpc_connection *); |
|
struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *); |
|
void rxrpc_put_service_conn(struct rxrpc_connection *); |
|
void rxrpc_service_connection_reaper(struct work_struct *); |
|
void rxrpc_destroy_all_connections(struct rxrpc_net *); |
|
|
|
static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) |
|
{ |
|
return conn->out_clientflag; |
|
} |
|
|
|
static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) |
|
{ |
|
return !rxrpc_conn_is_client(conn); |
|
} |
|
|
|
static inline void rxrpc_put_connection(struct rxrpc_connection *conn) |
|
{ |
|
if (!conn) |
|
return; |
|
|
|
if (rxrpc_conn_is_client(conn)) |
|
rxrpc_put_client_conn(conn); |
|
else |
|
rxrpc_put_service_conn(conn); |
|
} |
|
|
|
static inline void rxrpc_reduce_conn_timer(struct rxrpc_connection *conn, |
|
unsigned long expire_at) |
|
{ |
|
timer_reduce(&conn->timer, expire_at); |
|
} |
|
|
|
/* |
|
* conn_service.c |
|
*/ |
|
struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, |
|
struct sk_buff *); |
|
struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t); |
|
void rxrpc_new_incoming_connection(struct rxrpc_sock *, struct rxrpc_connection *, |
|
const struct rxrpc_security *, struct sk_buff *); |
|
void rxrpc_unpublish_service_conn(struct rxrpc_connection *); |
|
|
|
/* |
|
* input.c |
|
*/ |
|
int rxrpc_input_packet(struct sock *, struct sk_buff *); |
|
|
|
/* |
|
* insecure.c |
|
*/ |
|
extern const struct rxrpc_security rxrpc_no_security; |
|
|
|
/* |
|
* key.c |
|
*/ |
|
extern struct key_type key_type_rxrpc; |
|
|
|
int rxrpc_request_key(struct rxrpc_sock *, sockptr_t , int); |
|
int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t, |
|
u32); |
|
|
|
/* |
|
* local_event.c |
|
*/ |
|
extern void rxrpc_process_local_events(struct rxrpc_local *); |
|
|
|
/* |
|
* local_object.c |
|
*/ |
|
struct rxrpc_local *rxrpc_lookup_local(struct net *, const struct sockaddr_rxrpc *); |
|
struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *); |
|
struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *); |
|
void rxrpc_put_local(struct rxrpc_local *); |
|
struct rxrpc_local *rxrpc_use_local(struct rxrpc_local *); |
|
void rxrpc_unuse_local(struct rxrpc_local *); |
|
void rxrpc_queue_local(struct rxrpc_local *); |
|
void rxrpc_destroy_all_locals(struct rxrpc_net *); |
|
|
|
static inline bool __rxrpc_unuse_local(struct rxrpc_local *local) |
|
{ |
|
return atomic_dec_return(&local->active_users) == 0; |
|
} |
|
|
|
static inline bool __rxrpc_use_local(struct rxrpc_local *local) |
|
{ |
|
return atomic_fetch_add_unless(&local->active_users, 1, 0) != 0; |
|
} |
|
|
|
/* |
|
* misc.c |
|
*/ |
|
extern unsigned int rxrpc_max_backlog __read_mostly; |
|
extern unsigned long rxrpc_requested_ack_delay; |
|
extern unsigned long rxrpc_soft_ack_delay; |
|
extern unsigned long rxrpc_idle_ack_delay; |
|
extern unsigned int rxrpc_rx_window_size; |
|
extern unsigned int rxrpc_rx_mtu; |
|
extern unsigned int rxrpc_rx_jumbo_max; |
|
|
|
extern const s8 rxrpc_ack_priority[]; |
|
|
|
/* |
|
* net_ns.c |
|
*/ |
|
extern unsigned int rxrpc_net_id; |
|
extern struct pernet_operations rxrpc_net_ops; |
|
|
|
static inline struct rxrpc_net *rxrpc_net(struct net *net) |
|
{ |
|
return net_generic(net, rxrpc_net_id); |
|
} |
|
|
|
/* |
|
* output.c |
|
*/ |
|
int rxrpc_send_ack_packet(struct rxrpc_call *, bool, rxrpc_serial_t *); |
|
int rxrpc_send_abort_packet(struct rxrpc_call *); |
|
int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *, bool); |
|
void rxrpc_reject_packets(struct rxrpc_local *); |
|
void rxrpc_send_keepalive(struct rxrpc_peer *); |
|
|
|
/* |
|
* peer_event.c |
|
*/ |
|
void rxrpc_error_report(struct sock *); |
|
void rxrpc_peer_keepalive_worker(struct work_struct *); |
|
|
|
/* |
|
* peer_object.c |
|
*/ |
|
struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, |
|
const struct sockaddr_rxrpc *); |
|
struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *, struct rxrpc_local *, |
|
struct sockaddr_rxrpc *, gfp_t); |
|
struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); |
|
void rxrpc_new_incoming_peer(struct rxrpc_sock *, struct rxrpc_local *, |
|
struct rxrpc_peer *); |
|
void rxrpc_destroy_all_peers(struct rxrpc_net *); |
|
struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *); |
|
struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *); |
|
void rxrpc_put_peer(struct rxrpc_peer *); |
|
void rxrpc_put_peer_locked(struct rxrpc_peer *); |
|
|
|
/* |
|
* proc.c |
|
*/ |
|
extern const struct seq_operations rxrpc_call_seq_ops; |
|
extern const struct seq_operations rxrpc_connection_seq_ops; |
|
extern const struct seq_operations rxrpc_peer_seq_ops; |
|
|
|
/* |
|
* recvmsg.c |
|
*/ |
|
void rxrpc_notify_socket(struct rxrpc_call *); |
|
bool __rxrpc_set_call_completion(struct rxrpc_call *, enum rxrpc_call_completion, u32, int); |
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bool rxrpc_set_call_completion(struct rxrpc_call *, enum rxrpc_call_completion, u32, int); |
|
bool __rxrpc_call_completed(struct rxrpc_call *); |
|
bool rxrpc_call_completed(struct rxrpc_call *); |
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bool __rxrpc_abort_call(const char *, struct rxrpc_call *, rxrpc_seq_t, u32, int); |
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bool rxrpc_abort_call(const char *, struct rxrpc_call *, rxrpc_seq_t, u32, int); |
|
int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); |
|
|
|
/* |
|
* Abort a call due to a protocol error. |
|
*/ |
|
static inline bool __rxrpc_abort_eproto(struct rxrpc_call *call, |
|
struct sk_buff *skb, |
|
const char *eproto_why, |
|
const char *why, |
|
u32 abort_code) |
|
{ |
|
struct rxrpc_skb_priv *sp = rxrpc_skb(skb); |
|
|
|
trace_rxrpc_rx_eproto(call, sp->hdr.serial, eproto_why); |
|
return rxrpc_abort_call(why, call, sp->hdr.seq, abort_code, -EPROTO); |
|
} |
|
|
|
#define rxrpc_abort_eproto(call, skb, eproto_why, abort_why, abort_code) \ |
|
__rxrpc_abort_eproto((call), (skb), tracepoint_string(eproto_why), \ |
|
(abort_why), (abort_code)) |
|
|
|
/* |
|
* rtt.c |
|
*/ |
|
void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, int, |
|
rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); |
|
unsigned long rxrpc_get_rto_backoff(struct rxrpc_peer *, bool); |
|
void rxrpc_peer_init_rtt(struct rxrpc_peer *); |
|
|
|
/* |
|
* rxkad.c |
|
*/ |
|
#ifdef CONFIG_RXKAD |
|
extern const struct rxrpc_security rxkad; |
|
#endif |
|
|
|
/* |
|
* security.c |
|
*/ |
|
int __init rxrpc_init_security(void); |
|
const struct rxrpc_security *rxrpc_security_lookup(u8); |
|
void rxrpc_exit_security(void); |
|
int rxrpc_init_client_conn_security(struct rxrpc_connection *); |
|
const struct rxrpc_security *rxrpc_get_incoming_security(struct rxrpc_sock *, |
|
struct sk_buff *); |
|
struct key *rxrpc_look_up_server_security(struct rxrpc_connection *, |
|
struct sk_buff *, u32, u32); |
|
|
|
/* |
|
* sendmsg.c |
|
*/ |
|
int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); |
|
|
|
/* |
|
* server_key.c |
|
*/ |
|
extern struct key_type key_type_rxrpc_s; |
|
|
|
int rxrpc_server_keyring(struct rxrpc_sock *, sockptr_t, int); |
|
|
|
/* |
|
* skbuff.c |
|
*/ |
|
void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); |
|
void rxrpc_packet_destructor(struct sk_buff *); |
|
void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); |
|
void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); |
|
void rxrpc_eaten_skb(struct sk_buff *, enum rxrpc_skb_trace); |
|
void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); |
|
void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); |
|
void rxrpc_purge_queue(struct sk_buff_head *); |
|
|
|
/* |
|
* sysctl.c |
|
*/ |
|
#ifdef CONFIG_SYSCTL |
|
extern int __init rxrpc_sysctl_init(void); |
|
extern void rxrpc_sysctl_exit(void); |
|
#else |
|
static inline int __init rxrpc_sysctl_init(void) { return 0; } |
|
static inline void rxrpc_sysctl_exit(void) {} |
|
#endif |
|
|
|
/* |
|
* utils.c |
|
*/ |
|
int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); |
|
|
|
static inline bool before(u32 seq1, u32 seq2) |
|
{ |
|
return (s32)(seq1 - seq2) < 0; |
|
} |
|
static inline bool before_eq(u32 seq1, u32 seq2) |
|
{ |
|
return (s32)(seq1 - seq2) <= 0; |
|
} |
|
static inline bool after(u32 seq1, u32 seq2) |
|
{ |
|
return (s32)(seq1 - seq2) > 0; |
|
} |
|
static inline bool after_eq(u32 seq1, u32 seq2) |
|
{ |
|
return (s32)(seq1 - seq2) >= 0; |
|
} |
|
|
|
/* |
|
* debug tracing |
|
*/ |
|
extern unsigned int rxrpc_debug; |
|
|
|
#define dbgprintk(FMT,...) \ |
|
printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) |
|
|
|
#define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
|
#define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) |
|
#define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) |
|
#define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) |
|
#define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) |
|
|
|
|
|
#if defined(__KDEBUG) |
|
#define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) |
|
#define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) |
|
#define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) |
|
#define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) |
|
#define _net(FMT,...) knet(FMT,##__VA_ARGS__) |
|
|
|
#elif defined(CONFIG_AF_RXRPC_DEBUG) |
|
#define RXRPC_DEBUG_KENTER 0x01 |
|
#define RXRPC_DEBUG_KLEAVE 0x02 |
|
#define RXRPC_DEBUG_KDEBUG 0x04 |
|
#define RXRPC_DEBUG_KPROTO 0x08 |
|
#define RXRPC_DEBUG_KNET 0x10 |
|
|
|
#define _enter(FMT,...) \ |
|
do { \ |
|
if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ |
|
kenter(FMT,##__VA_ARGS__); \ |
|
} while (0) |
|
|
|
#define _leave(FMT,...) \ |
|
do { \ |
|
if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ |
|
kleave(FMT,##__VA_ARGS__); \ |
|
} while (0) |
|
|
|
#define _debug(FMT,...) \ |
|
do { \ |
|
if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ |
|
kdebug(FMT,##__VA_ARGS__); \ |
|
} while (0) |
|
|
|
#define _proto(FMT,...) \ |
|
do { \ |
|
if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ |
|
kproto(FMT,##__VA_ARGS__); \ |
|
} while (0) |
|
|
|
#define _net(FMT,...) \ |
|
do { \ |
|
if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ |
|
knet(FMT,##__VA_ARGS__); \ |
|
} while (0) |
|
|
|
#else |
|
#define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
|
#define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) |
|
#define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) |
|
#define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) |
|
#define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) |
|
#endif |
|
|
|
/* |
|
* debug assertion checking |
|
*/ |
|
#if 1 // defined(__KDEBUGALL) |
|
|
|
#define ASSERT(X) \ |
|
do { \ |
|
if (unlikely(!(X))) { \ |
|
pr_err("Assertion failed\n"); \ |
|
BUG(); \ |
|
} \ |
|
} while (0) |
|
|
|
#define ASSERTCMP(X, OP, Y) \ |
|
do { \ |
|
__typeof__(X) _x = (X); \ |
|
__typeof__(Y) _y = (__typeof__(X))(Y); \ |
|
if (unlikely(!(_x OP _y))) { \ |
|
pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ |
|
(unsigned long)_x, (unsigned long)_x, #OP, \ |
|
(unsigned long)_y, (unsigned long)_y); \ |
|
BUG(); \ |
|
} \ |
|
} while (0) |
|
|
|
#define ASSERTIF(C, X) \ |
|
do { \ |
|
if (unlikely((C) && !(X))) { \ |
|
pr_err("Assertion failed\n"); \ |
|
BUG(); \ |
|
} \ |
|
} while (0) |
|
|
|
#define ASSERTIFCMP(C, X, OP, Y) \ |
|
do { \ |
|
__typeof__(X) _x = (X); \ |
|
__typeof__(Y) _y = (__typeof__(X))(Y); \ |
|
if (unlikely((C) && !(_x OP _y))) { \ |
|
pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ |
|
(unsigned long)_x, (unsigned long)_x, #OP, \ |
|
(unsigned long)_y, (unsigned long)_y); \ |
|
BUG(); \ |
|
} \ |
|
} while (0) |
|
|
|
#else |
|
|
|
#define ASSERT(X) \ |
|
do { \ |
|
} while (0) |
|
|
|
#define ASSERTCMP(X, OP, Y) \ |
|
do { \ |
|
} while (0) |
|
|
|
#define ASSERTIF(C, X) \ |
|
do { \ |
|
} while (0) |
|
|
|
#define ASSERTIFCMP(C, X, OP, Y) \ |
|
do { \ |
|
} while (0) |
|
|
|
#endif /* __KDEBUGALL */
|
|
|