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linux/net/rxrpc/ar-internal.h
Joe Perches c1b1203d65 net: misc: Remove extern from function prototypes 
There are a mix of function prototypes with and without extern
in the kernel sources.  Standardize on not using extern for
function prototypes.

Function prototypes don't need to be written with extern.
extern is assumed by the compiler.  Its use is as unnecessary as
using auto to declare automatic/local variables in a block.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-19 19:12:11 -04:00

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/* AF_RXRPC internal definitions
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <rxrpc/packet.h>
#if 0
#define CHECK_SLAB_OKAY(X) \
BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \
(POISON_FREE << 8 | POISON_FREE))
#else
#define CHECK_SLAB_OKAY(X) do {} while(0)
#endif
#define FCRYPT_BSIZE 8
struct rxrpc_crypt {
union {
u8 x[FCRYPT_BSIZE];
__be32 n[2];
};
} __attribute__((aligned(8)));
#define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS))
#define rxrpc_queue_delayed_work(WS,D) \
queue_delayed_work(rxrpc_workqueue, (WS), (D))
#define rxrpc_queue_call(CALL) rxrpc_queue_work(&(CALL)->processor)
#define rxrpc_queue_conn(CONN) rxrpc_queue_work(&(CONN)->processor)
/*
* sk_state for RxRPC sockets
*/
enum {
RXRPC_UNCONNECTED = 0,
RXRPC_CLIENT_BOUND, /* client local address bound */
RXRPC_CLIENT_CONNECTED, /* client is connected */
RXRPC_SERVER_BOUND, /* server local address bound */
RXRPC_SERVER_LISTENING, /* server listening for connections */
RXRPC_CLOSE, /* socket is being closed */
};
/*
* RxRPC socket definition
*/
struct rxrpc_sock {
/* WARNING: sk has to be the first member */
struct sock sk;
rxrpc_interceptor_t interceptor; /* kernel service Rx interceptor function */
struct rxrpc_local *local; /* local endpoint */
struct rxrpc_transport *trans; /* transport handler */
struct rxrpc_conn_bundle *bundle; /* virtual connection bundle */
struct rxrpc_connection *conn; /* exclusive virtual connection */
struct list_head listen_link; /* link in the local endpoint's listen list */
struct list_head secureq; /* calls awaiting connection security clearance */
struct list_head acceptq; /* calls awaiting acceptance */
struct key *key; /* security for this socket */
struct key *securities; /* list of server security descriptors */
struct rb_root calls; /* outstanding calls on this socket */
unsigned long flags;
#define RXRPC_SOCK_EXCLUSIVE_CONN 1 /* exclusive connection for a client socket */
rwlock_t call_lock; /* lock for calls */
u32 min_sec_level; /* minimum security level */
#define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT
struct sockaddr_rxrpc srx; /* local address */
sa_family_t proto; /* protocol created with */
__be16 service_id; /* service ID of local/remote service */
};
#define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk)
/*
* RxRPC socket buffer private variables
* - max 48 bytes (struct sk_buff::cb)
*/
struct rxrpc_skb_priv {
struct rxrpc_call *call; /* call with which associated */
unsigned long resend_at; /* time in jiffies at which to resend */
union {
unsigned int offset; /* offset into buffer of next read */
int remain; /* amount of space remaining for next write */
u32 error; /* network error code */
bool need_resend; /* T if needs resending */
};
struct rxrpc_header hdr; /* RxRPC packet header from this packet */
};
#define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb)
enum rxrpc_command {
RXRPC_CMD_SEND_DATA, /* send data message */
RXRPC_CMD_SEND_ABORT, /* request abort generation */
RXRPC_CMD_ACCEPT, /* [server] accept incoming call */
RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */
};
/*
* RxRPC security module interface
*/
struct rxrpc_security {
struct module *owner; /* providing module */
struct list_head link; /* link in master list */
const char *name; /* name of this service */
u8 security_index; /* security type provided */
/* initialise a connection's security */
int (*init_connection_security)(struct rxrpc_connection *);
/* prime a connection's packet security */
void (*prime_packet_security)(struct rxrpc_connection *);
/* impose security on a packet */
int (*secure_packet)(const struct rxrpc_call *,
struct sk_buff *,
size_t,
void *);
/* verify the security on a received packet */
int (*verify_packet)(const struct rxrpc_call *, struct sk_buff *,
u32 *);
/* issue a challenge */
int (*issue_challenge)(struct rxrpc_connection *);
/* respond to a challenge */
int (*respond_to_challenge)(struct rxrpc_connection *,
struct sk_buff *,
u32 *);
/* verify a response */
int (*verify_response)(struct rxrpc_connection *,
struct sk_buff *,
u32 *);
/* clear connection security */
void (*clear)(struct rxrpc_connection *);
};
/*
* RxRPC local transport endpoint definition
* - matched by local port, address and protocol type
*/
struct rxrpc_local {
struct socket *socket; /* my UDP socket */
struct work_struct destroyer; /* endpoint destroyer */
struct work_struct acceptor; /* incoming call processor */
struct work_struct rejecter; /* packet reject writer */
struct list_head services; /* services listening on this endpoint */
struct list_head link; /* link in endpoint list */
struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */
struct sk_buff_head accept_queue; /* incoming calls awaiting acceptance */
struct sk_buff_head reject_queue; /* packets awaiting rejection */
spinlock_t lock; /* access lock */
rwlock_t services_lock; /* lock for services list */
atomic_t usage;
int debug_id; /* debug ID for printks */
volatile char error_rcvd; /* T if received ICMP error outstanding */
struct sockaddr_rxrpc srx; /* local address */
};
/*
* RxRPC remote transport endpoint definition
* - matched by remote port, address and protocol type
* - holds the connection ID counter for connections between the two endpoints
*/
struct rxrpc_peer {
struct work_struct destroyer; /* peer destroyer */
struct list_head link; /* link in master peer list */
struct list_head error_targets; /* targets for net error distribution */
spinlock_t lock; /* access lock */
atomic_t usage;
unsigned int if_mtu; /* interface MTU for this peer */
unsigned int mtu; /* network MTU for this peer */
unsigned int maxdata; /* data size (MTU - hdrsize) */
unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */
int debug_id; /* debug ID for printks */
int net_error; /* network error distributed */
struct sockaddr_rxrpc srx; /* remote address */
/* calculated RTT cache */
#define RXRPC_RTT_CACHE_SIZE 32
suseconds_t rtt; /* current RTT estimate (in uS) */
unsigned int rtt_point; /* next entry at which to insert */
unsigned int rtt_usage; /* amount of cache actually used */
suseconds_t rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* calculated RTT cache */
};
/*
* RxRPC point-to-point transport / connection manager definition
* - handles a bundle of connections between two endpoints
* - matched by { local, peer }
*/
struct rxrpc_transport {
struct rxrpc_local *local; /* local transport endpoint */
struct rxrpc_peer *peer; /* remote transport endpoint */
struct work_struct error_handler; /* network error distributor */
struct rb_root bundles; /* client connection bundles on this transport */
struct rb_root client_conns; /* client connections on this transport */
struct rb_root server_conns; /* server connections on this transport */
struct list_head link; /* link in master session list */
struct sk_buff_head error_queue; /* error packets awaiting processing */
time_t put_time; /* time at which to reap */
spinlock_t client_lock; /* client connection allocation lock */
rwlock_t conn_lock; /* lock for active/dead connections */
atomic_t usage;
int debug_id; /* debug ID for printks */
unsigned int conn_idcounter; /* connection ID counter (client) */
};
/*
* RxRPC client connection bundle
* - matched by { transport, service_id, key }
*/
struct rxrpc_conn_bundle {
struct rb_node node; /* node in transport's lookup tree */
struct list_head unused_conns; /* unused connections in this bundle */
struct list_head avail_conns; /* available connections in this bundle */
struct list_head busy_conns; /* busy connections in this bundle */
struct key *key; /* security for this bundle */
wait_queue_head_t chanwait; /* wait for channel to become available */
atomic_t usage;
int debug_id; /* debug ID for printks */
unsigned short num_conns; /* number of connections in this bundle */
__be16 service_id; /* service ID */
u8 security_ix; /* security type */
};
/*
* RxRPC connection definition
* - matched by { transport, service_id, conn_id, direction, key }
* - each connection can only handle four simultaneous calls
*/
struct rxrpc_connection {
struct rxrpc_transport *trans; /* transport session */
struct rxrpc_conn_bundle *bundle; /* connection bundle (client) */
struct work_struct processor; /* connection event processor */
struct rb_node node; /* node in transport's lookup tree */
struct list_head link; /* link in master connection list */
struct list_head bundle_link; /* link in bundle */
struct rb_root calls; /* calls on this connection */
struct sk_buff_head rx_queue; /* received conn-level packets */
struct rxrpc_call *channels[RXRPC_MAXCALLS]; /* channels (active calls) */
struct rxrpc_security *security; /* applied security module */
struct key *key; /* security for this connection (client) */
struct key *server_key; /* security for this service */
struct crypto_blkcipher *cipher; /* encryption handle */
struct rxrpc_crypt csum_iv; /* packet checksum base */
unsigned long events;
#define RXRPC_CONN_CHALLENGE 0 /* send challenge packet */
time_t put_time; /* time at which to reap */
rwlock_t lock; /* access lock */
spinlock_t state_lock; /* state-change lock */
atomic_t usage;
u32 real_conn_id; /* connection ID (host-endian) */
enum { /* current state of connection */
RXRPC_CONN_UNUSED, /* - connection not yet attempted */
RXRPC_CONN_CLIENT, /* - client connection */
RXRPC_CONN_SERVER_UNSECURED, /* - server unsecured connection */
RXRPC_CONN_SERVER_CHALLENGING, /* - server challenging for security */
RXRPC_CONN_SERVER, /* - server secured connection */
RXRPC_CONN_REMOTELY_ABORTED, /* - conn aborted by peer */
RXRPC_CONN_LOCALLY_ABORTED, /* - conn aborted locally */
RXRPC_CONN_NETWORK_ERROR, /* - conn terminated by network error */
} state;
int error; /* error code for local abort */
int debug_id; /* debug ID for printks */
unsigned int call_counter; /* call ID counter */
atomic_t serial; /* packet serial number counter */
atomic_t hi_serial; /* highest serial number received */
u8 avail_calls; /* number of calls available */
u8 size_align; /* data size alignment (for security) */
u8 header_size; /* rxrpc + security header size */
u8 security_size; /* security header size */
u32 security_level; /* security level negotiated */
u32 security_nonce; /* response re-use preventer */
/* the following are all in net order */
__be32 epoch; /* epoch of this connection */
__be32 cid; /* connection ID */
__be16 service_id; /* service ID */
u8 security_ix; /* security type */
u8 in_clientflag; /* RXRPC_CLIENT_INITIATED if we are server */
u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */
};
/*
* RxRPC call definition
* - matched by { connection, call_id }
*/
struct rxrpc_call {
struct rxrpc_connection *conn; /* connection carrying call */
struct rxrpc_sock *socket; /* socket responsible */
struct timer_list lifetimer; /* lifetime remaining on call */
struct timer_list deadspan; /* reap timer for re-ACK'ing, etc */
struct timer_list ack_timer; /* ACK generation timer */
struct timer_list resend_timer; /* Tx resend timer */
struct work_struct destroyer; /* call destroyer */
struct work_struct processor; /* packet processor and ACK generator */
struct list_head link; /* link in master call list */
struct list_head error_link; /* link in error distribution list */
struct list_head accept_link; /* calls awaiting acceptance */
struct rb_node sock_node; /* node in socket call tree */
struct rb_node conn_node; /* node in connection call tree */
struct sk_buff_head rx_queue; /* received packets */
struct sk_buff_head rx_oos_queue; /* packets received out of sequence */
struct sk_buff *tx_pending; /* Tx socket buffer being filled */
wait_queue_head_t tx_waitq; /* wait for Tx window space to become available */
unsigned long user_call_ID; /* user-defined call ID */
unsigned long creation_jif; /* time of call creation */
unsigned long flags;
#define RXRPC_CALL_RELEASED 0 /* call has been released - no more message to userspace */
#define RXRPC_CALL_TERMINAL_MSG 1 /* call has given the socket its final message */
#define RXRPC_CALL_RCVD_LAST 2 /* all packets received */
#define RXRPC_CALL_RUN_RTIMER 3 /* Tx resend timer started */
#define RXRPC_CALL_TX_SOFT_ACK 4 /* sent some soft ACKs */
#define RXRPC_CALL_PROC_BUSY 5 /* the processor is busy */
#define RXRPC_CALL_INIT_ACCEPT 6 /* acceptance was initiated */
#define RXRPC_CALL_HAS_USERID 7 /* has a user ID attached */
#define RXRPC_CALL_EXPECT_OOS 8 /* expect out of sequence packets */
unsigned long events;
#define RXRPC_CALL_RCVD_ACKALL 0 /* ACKALL or reply received */
#define RXRPC_CALL_RCVD_BUSY 1 /* busy packet received */
#define RXRPC_CALL_RCVD_ABORT 2 /* abort packet received */
#define RXRPC_CALL_RCVD_ERROR 3 /* network error received */
#define RXRPC_CALL_ACK_FINAL 4 /* need to generate final ACK (and release call) */
#define RXRPC_CALL_ACK 5 /* need to generate ACK */
#define RXRPC_CALL_REJECT_BUSY 6 /* need to generate busy message */
#define RXRPC_CALL_ABORT 7 /* need to generate abort */
#define RXRPC_CALL_CONN_ABORT 8 /* local connection abort generated */
#define RXRPC_CALL_RESEND_TIMER 9 /* Tx resend timer expired */
#define RXRPC_CALL_RESEND 10 /* Tx resend required */
#define RXRPC_CALL_DRAIN_RX_OOS 11 /* drain the Rx out of sequence queue */
#define RXRPC_CALL_LIFE_TIMER 12 /* call's lifetimer ran out */
#define RXRPC_CALL_ACCEPTED 13 /* incoming call accepted by userspace app */
#define RXRPC_CALL_SECURED 14 /* incoming call's connection is now secure */
#define RXRPC_CALL_POST_ACCEPT 15 /* need to post an "accept?" message to the app */
#define RXRPC_CALL_RELEASE 16 /* need to release the call's resources */
spinlock_t lock;
rwlock_t state_lock; /* lock for state transition */
atomic_t usage;
atomic_t sequence; /* Tx data packet sequence counter */
u32 abort_code; /* local/remote abort code */
enum { /* current state of call */
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_CLIENT_FINAL_ACK, /* - client sending final ACK phase */
RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */
RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */
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 completed */
RXRPC_CALL_SERVER_BUSY, /* - call rejected by busy server */
RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */
RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */
RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */
RXRPC_CALL_DEAD, /* - call is dead */
} state;
int debug_id; /* debug ID for printks */
u8 channel; /* connection channel occupied by this call */
/* transmission-phase ACK management */
u8 acks_head; /* offset into window of first entry */
u8 acks_tail; /* offset into window of last entry */
u8 acks_winsz; /* size of un-ACK'd window */
u8 acks_unacked; /* lowest unacked packet in last ACK received */
int acks_latest; /* serial number of latest ACK received */
rxrpc_seq_t acks_hard; /* highest definitively ACK'd msg seq */
unsigned long *acks_window; /* sent packet window
* - elements are pointers with LSB set if ACK'd
*/
/* receive-phase ACK management */
rxrpc_seq_t rx_data_expect; /* next data seq ID expected to be received */
rxrpc_seq_t rx_data_post; /* next data seq ID expected to be posted */
rxrpc_seq_t rx_data_recv; /* last data seq ID encountered by recvmsg */
rxrpc_seq_t rx_data_eaten; /* last data seq ID consumed by recvmsg */
rxrpc_seq_t rx_first_oos; /* first packet in rx_oos_queue (or 0) */
rxrpc_seq_t ackr_win_top; /* top of ACK window (rx_data_eaten is bottom) */
rxrpc_seq_net_t ackr_prev_seq; /* previous sequence number received */
u8 ackr_reason; /* reason to ACK */
__be32 ackr_serial; /* serial of packet being ACK'd */
atomic_t ackr_not_idle; /* number of packets in Rx queue */
/* received packet records, 1 bit per record */
#define RXRPC_ACKR_WINDOW_ASZ DIV_ROUND_UP(RXRPC_MAXACKS, BITS_PER_LONG)
unsigned long ackr_window[RXRPC_ACKR_WINDOW_ASZ + 1];
/* the following should all be in net order */
__be32 cid; /* connection ID + channel index */
__be32 call_id; /* call ID on connection */
};
/*
* locally abort an RxRPC call
*/
static inline void rxrpc_abort_call(struct rxrpc_call *call, u32 abort_code)
{
write_lock_bh(&call->state_lock);
if (call->state < RXRPC_CALL_COMPLETE) {
call->abort_code = abort_code;
call->state = RXRPC_CALL_LOCALLY_ABORTED;
set_bit(RXRPC_CALL_ABORT, &call->events);
}
write_unlock_bh(&call->state_lock);
}
/*
* af_rxrpc.c
*/
extern atomic_t rxrpc_n_skbs;
extern __be32 rxrpc_epoch;
extern atomic_t rxrpc_debug_id;
extern struct workqueue_struct *rxrpc_workqueue;
/*
* ar-accept.c
*/
void rxrpc_accept_incoming_calls(struct work_struct *);
struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long);
int rxrpc_reject_call(struct rxrpc_sock *);
/*
* ar-ack.c
*/
void __rxrpc_propose_ACK(struct rxrpc_call *, u8, __be32, bool);
void rxrpc_propose_ACK(struct rxrpc_call *, u8, __be32, bool);
void rxrpc_process_call(struct work_struct *);
/*
* ar-call.c
*/
extern struct kmem_cache *rxrpc_call_jar;
extern struct list_head rxrpc_calls;
extern rwlock_t rxrpc_call_lock;
struct rxrpc_call *rxrpc_get_client_call(struct rxrpc_sock *,
struct rxrpc_transport *,
struct rxrpc_conn_bundle *,
unsigned long, int, gfp_t);
struct rxrpc_call *rxrpc_incoming_call(struct rxrpc_sock *,
struct rxrpc_connection *,
struct rxrpc_header *, gfp_t);
struct rxrpc_call *rxrpc_find_server_call(struct rxrpc_sock *, unsigned long);
void rxrpc_release_call(struct rxrpc_call *);
void rxrpc_release_calls_on_socket(struct rxrpc_sock *);
void __rxrpc_put_call(struct rxrpc_call *);
void __exit rxrpc_destroy_all_calls(void);
/*
* ar-connection.c
*/
extern struct list_head rxrpc_connections;
extern rwlock_t rxrpc_connection_lock;
struct rxrpc_conn_bundle *rxrpc_get_bundle(struct rxrpc_sock *,
struct rxrpc_transport *,
struct key *, __be16, gfp_t);
void rxrpc_put_bundle(struct rxrpc_transport *, struct rxrpc_conn_bundle *);
int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_transport *,
struct rxrpc_conn_bundle *, struct rxrpc_call *, gfp_t);
void rxrpc_put_connection(struct rxrpc_connection *);
void __exit rxrpc_destroy_all_connections(void);
struct rxrpc_connection *rxrpc_find_connection(struct rxrpc_transport *,
struct rxrpc_header *);
extern struct rxrpc_connection *
rxrpc_incoming_connection(struct rxrpc_transport *, struct rxrpc_header *,
gfp_t);
/*
* ar-connevent.c
*/
void rxrpc_process_connection(struct work_struct *);
void rxrpc_reject_packet(struct rxrpc_local *, struct sk_buff *);
void rxrpc_reject_packets(struct work_struct *);
/*
* ar-error.c
*/
void rxrpc_UDP_error_report(struct sock *);
void rxrpc_UDP_error_handler(struct work_struct *);
/*
* ar-input.c
*/
extern unsigned long rxrpc_ack_timeout;
extern const char *rxrpc_pkts[];
void rxrpc_data_ready(struct sock *, int);
int rxrpc_queue_rcv_skb(struct rxrpc_call *, struct sk_buff *, bool, bool);
void rxrpc_fast_process_packet(struct rxrpc_call *, struct sk_buff *);
/*
* ar-local.c
*/
extern rwlock_t rxrpc_local_lock;
struct rxrpc_local *rxrpc_lookup_local(struct sockaddr_rxrpc *);
void rxrpc_put_local(struct rxrpc_local *);
void __exit rxrpc_destroy_all_locals(void);
/*
* ar-key.c
*/
extern struct key_type key_type_rxrpc;
extern struct key_type key_type_rxrpc_s;
int rxrpc_request_key(struct rxrpc_sock *, char __user *, int);
int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int);
int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time_t,
u32);
/*
* ar-output.c
*/
extern int rxrpc_resend_timeout;
int rxrpc_send_packet(struct rxrpc_transport *, struct sk_buff *);
int rxrpc_client_sendmsg(struct kiocb *, struct rxrpc_sock *,
struct rxrpc_transport *, struct msghdr *, size_t);
int rxrpc_server_sendmsg(struct kiocb *, struct rxrpc_sock *, struct msghdr *,
size_t);
/*
* ar-peer.c
*/
struct rxrpc_peer *rxrpc_get_peer(struct sockaddr_rxrpc *, gfp_t);
void rxrpc_put_peer(struct rxrpc_peer *);
struct rxrpc_peer *rxrpc_find_peer(struct rxrpc_local *, __be32, __be16);
void __exit rxrpc_destroy_all_peers(void);
/*
* ar-proc.c
*/
extern const char *const rxrpc_call_states[];
extern const struct file_operations rxrpc_call_seq_fops;
extern const struct file_operations rxrpc_connection_seq_fops;
/*
* ar-recvmsg.c
*/
void rxrpc_remove_user_ID(struct rxrpc_sock *, struct rxrpc_call *);
int rxrpc_recvmsg(struct kiocb *, struct socket *, struct msghdr *, size_t,
int);
/*
* ar-security.c
*/
int rxrpc_register_security(struct rxrpc_security *);
void rxrpc_unregister_security(struct rxrpc_security *);
int rxrpc_init_client_conn_security(struct rxrpc_connection *);
int rxrpc_init_server_conn_security(struct rxrpc_connection *);
int rxrpc_secure_packet(const struct rxrpc_call *, struct sk_buff *, size_t,
void *);
int rxrpc_verify_packet(const struct rxrpc_call *, struct sk_buff *, u32 *);
void rxrpc_clear_conn_security(struct rxrpc_connection *);
/*
* ar-skbuff.c
*/
void rxrpc_packet_destructor(struct sk_buff *);
/*
* ar-transport.c
*/
struct rxrpc_transport *rxrpc_get_transport(struct rxrpc_local *,
struct rxrpc_peer *, gfp_t);
void rxrpc_put_transport(struct rxrpc_transport *);
void __exit rxrpc_destroy_all_transports(void);
struct rxrpc_transport *rxrpc_find_transport(struct rxrpc_local *,
struct rxrpc_peer *);
/*
* 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))) { \
printk(KERN_ERR "\n"); \
printk(KERN_ERR "RxRPC: Assertion failed\n"); \
BUG(); \
} \
} while(0)
#define ASSERTCMP(X, OP, Y) \
do { \
if (unlikely(!((X) OP (Y)))) { \
printk(KERN_ERR "\n"); \
printk(KERN_ERR "RxRPC: Assertion failed\n"); \
printk(KERN_ERR "%lu " #OP " %lu is false\n", \
(unsigned long)(X), (unsigned long)(Y)); \
printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \
(unsigned long)(X), (unsigned long)(Y)); \
BUG(); \
} \
} while(0)
#define ASSERTIF(C, X) \
do { \
if (unlikely((C) && !(X))) { \
printk(KERN_ERR "\n"); \
printk(KERN_ERR "RxRPC: Assertion failed\n"); \
BUG(); \
} \
} while(0)
#define ASSERTIFCMP(C, X, OP, Y) \
do { \
if (unlikely((C) && !((X) OP (Y)))) { \
printk(KERN_ERR "\n"); \
printk(KERN_ERR "RxRPC: Assertion failed\n"); \
printk(KERN_ERR "%lu " #OP " %lu is false\n", \
(unsigned long)(X), (unsigned long)(Y)); \
printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \
(unsigned long)(X), (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 */
/*
* socket buffer accounting / leak finding
*/
static inline void __rxrpc_new_skb(struct sk_buff *skb, const char *fn)
{
//_net("new skb %p %s [%d]", skb, fn, atomic_read(&rxrpc_n_skbs));
//atomic_inc(&rxrpc_n_skbs);
}
#define rxrpc_new_skb(skb) __rxrpc_new_skb((skb), __func__)
static inline void __rxrpc_kill_skb(struct sk_buff *skb, const char *fn)
{
//_net("kill skb %p %s [%d]", skb, fn, atomic_read(&rxrpc_n_skbs));
//atomic_dec(&rxrpc_n_skbs);
}
#define rxrpc_kill_skb(skb) __rxrpc_kill_skb((skb), __func__)
static inline void __rxrpc_free_skb(struct sk_buff *skb, const char *fn)
{
if (skb) {
CHECK_SLAB_OKAY(&skb->users);
//_net("free skb %p %s [%d]",
// skb, fn, atomic_read(&rxrpc_n_skbs));
//atomic_dec(&rxrpc_n_skbs);
kfree_skb(skb);
}
}
#define rxrpc_free_skb(skb) __rxrpc_free_skb((skb), __func__)
static inline void rxrpc_purge_queue(struct sk_buff_head *list)
{
struct sk_buff *skb;
while ((skb = skb_dequeue((list))) != NULL)
rxrpc_free_skb(skb);
}
static inline void __rxrpc_get_local(struct rxrpc_local *local, const char *f)
{
CHECK_SLAB_OKAY(&local->usage);
if (atomic_inc_return(&local->usage) == 1)
printk("resurrected (%s)\n", f);
}
#define rxrpc_get_local(LOCAL) __rxrpc_get_local((LOCAL), __func__)
#define rxrpc_get_call(CALL) \
do { \
CHECK_SLAB_OKAY(&(CALL)->usage); \
if (atomic_inc_return(&(CALL)->usage) == 1) \
BUG(); \
} while(0)
#define rxrpc_put_call(CALL) \
do { \
__rxrpc_put_call(CALL); \
} while(0)
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