diff options
Diffstat (limited to 'include/rxrpc/message.h')
| -rw-r--r-- | include/rxrpc/message.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/include/rxrpc/message.h b/include/rxrpc/message.h new file mode 100644 index 000000000000..3a59df6870b2 --- /dev/null +++ b/include/rxrpc/message.h | |||
| @@ -0,0 +1,71 @@ | |||
| 1 | /* message.h: Rx message caching | ||
| 2 | * | ||
| 3 | * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. | ||
| 4 | * Written by David Howells (dhowells@redhat.com) | ||
| 5 | * | ||
| 6 | * This program is free software; you can redistribute it and/or | ||
| 7 | * modify it under the terms of the GNU General Public License | ||
| 8 | * as published by the Free Software Foundation; either version | ||
| 9 | * 2 of the License, or (at your option) any later version. | ||
| 10 | */ | ||
| 11 | |||
| 12 | #ifndef _LINUX_RXRPC_MESSAGE_H | ||
| 13 | #define _LINUX_RXRPC_MESSAGE_H | ||
| 14 | |||
| 15 | #include <rxrpc/packet.h> | ||
| 16 | |||
| 17 | /*****************************************************************************/ | ||
| 18 | /* | ||
| 19 | * Rx message record | ||
| 20 | */ | ||
| 21 | struct rxrpc_message | ||
| 22 | { | ||
| 23 | atomic_t usage; | ||
| 24 | struct list_head link; /* list link */ | ||
| 25 | struct timeval stamp; /* time received or last sent */ | ||
| 26 | rxrpc_seq_t seq; /* message sequence number */ | ||
| 27 | |||
| 28 | int state; /* the state the message is currently in */ | ||
| 29 | #define RXRPC_MSG_PREPARED 0 | ||
| 30 | #define RXRPC_MSG_SENT 1 | ||
| 31 | #define RXRPC_MSG_ACKED 2 /* provisionally ACK'd */ | ||
| 32 | #define RXRPC_MSG_DONE 3 /* definitively ACK'd (msg->seq<ack.firstPacket) */ | ||
| 33 | #define RXRPC_MSG_RECEIVED 4 | ||
| 34 | #define RXRPC_MSG_ERROR -1 | ||
| 35 | char rttdone; /* used for RTT */ | ||
| 36 | |||
| 37 | struct rxrpc_transport *trans; /* transport received through */ | ||
| 38 | struct rxrpc_connection *conn; /* connection received over */ | ||
| 39 | struct sk_buff *pkt; /* received packet */ | ||
| 40 | off_t offset; /* offset into pkt of next byte of data */ | ||
| 41 | |||
| 42 | struct rxrpc_header hdr; /* message header */ | ||
| 43 | |||
| 44 | int dcount; /* data part count */ | ||
| 45 | size_t dsize; /* data size */ | ||
| 46 | #define RXRPC_MSG_MAX_IOCS 8 | ||
| 47 | struct kvec data[RXRPC_MSG_MAX_IOCS]; /* message data */ | ||
| 48 | unsigned long dfree; /* bit mask indicating kfree(data[x]) if T */ | ||
| 49 | }; | ||
| 50 | |||
| 51 | #define rxrpc_get_message(M) do { atomic_inc(&(M)->usage); } while(0) | ||
| 52 | |||
| 53 | extern void __rxrpc_put_message(struct rxrpc_message *msg); | ||
| 54 | static inline void rxrpc_put_message(struct rxrpc_message *msg) | ||
| 55 | { | ||
| 56 | BUG_ON(atomic_read(&msg->usage)<=0); | ||
| 57 | if (atomic_dec_and_test(&msg->usage)) | ||
| 58 | __rxrpc_put_message(msg); | ||
| 59 | } | ||
| 60 | |||
| 61 | extern int rxrpc_conn_newmsg(struct rxrpc_connection *conn, | ||
| 62 | struct rxrpc_call *call, | ||
| 63 | uint8_t type, | ||
| 64 | int count, | ||
| 65 | struct kvec *diov, | ||
| 66 | int alloc_flags, | ||
| 67 | struct rxrpc_message **_msg); | ||
| 68 | |||
| 69 | extern int rxrpc_conn_sendmsg(struct rxrpc_connection *conn, struct rxrpc_message *msg); | ||
| 70 | |||
| 71 | #endif /* _LINUX_RXRPC_MESSAGE_H */ | ||