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added hooks for adding an external header compressor

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This commit is contained in:
joxe 2010-03-17 12:08:59 +00:00
parent ea090a60e6
commit e8916fe01f
2 changed files with 49 additions and 10 deletions
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27
core/net/sicslowpan.h
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@ -33,7 +33,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: sicslowpan.h,v 1.10 2010/03/16 10:21:04 joxe Exp $
* $Id: sicslowpan.h,v 1.11 2010/03/17 12:08:59 joxe Exp $
*/
/**
* \file
@ -137,13 +137,15 @@
#define SICSLOWPAN_IPHC_MCAST_RANGE 0xA0
/** @} */
#define SICSLOWPAN_NDC_UDP_MASK 0xF8
/* NHC_EXT_HDR */
#define SICSLOWPAN_NHC_MASK 0xF0
#define SICSLOWPAN_NHC_EXT_HDR 0xE0
/**
* \name LOWPAN_UDP encoding (works together with IPHC)
* @{
*/
#define SICSLOWPAN_NHC_UDP_MASK 0xF8
#define SICSLOWPAN_NHC_UDP_ID 0xF0
#define SICSLOWPAN_NHC_UDP_C 0xF3
#define SICSLOWPAN_NHC_UDP_I 0xF0
@ -284,6 +286,25 @@ struct sicslowpan_addr_context {
/** @} */
/**
* The structure of a next header compressor.
*
* TODO: needs more parameters when compressing extension headers, etc.
*/
struct sicslowpan_nh_compressor {
int (* is_compressable)(uint8_t next_header);
/** compress next header (TCP/UDP, etc) - ptr points to next header to
compress */
int (* compress)(uint8_t *compressed, uint8_t *uncompressed_len);
/** uncompress next header (TCP/UDP, etc) - ptr points to next header to
uncompress */
int (* uncompress)(uint8_t *compressed, uint8_t *lowpanbuf, uint8_t *uncompressed_len);
};
extern const struct network_driver sicslowpan_driver;
extern const struct mac_driver *sicslowpan_mac;