abc/lwip
1
0
Fork 0
mirror of https://git.savannah.nongnu.org/git/lwip.git synced 2026-06-19 19:33:44 +08:00
Code Issues Packages Projects Releases Wiki Activity

icmp: add a dedicated struct for the standard ICMP header

Browse Source 
This is just to keep the code clean and prevent using the "echo" header
where any ICMP header is meant.

Signed-off-by: Simon Goldschmidt <goldsimon@gmx.de>
This commit is contained in:
Simon Goldschmidt
2020-01-30 22:50:25 +01:00
parent 75b2db4438
commit 695c323164
2 changed files with 26 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
src/include/lwip/prot/icmp.h
View File

@@ -57,13 +57,33 @@ extern "C" {
#define ICMP_AM 17 /* address mask request */
#define ICMP_AMR 18 /* address mask reply */
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/bpstruct.h"
#endif
/** The standard ICMP header (unspecified 32 bit data) */
PACK_STRUCT_BEGIN
struct icmp_hdr {
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u32_t data);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/epstruct.h"
#endif
/* Compatibility defines, old versions used to combine type and code to an u16_t */
#define ICMPH_TYPE(hdr) ((hdr)->type)
#define ICMPH_CODE(hdr) ((hdr)->code)
#define ICMPH_TYPE_SET(hdr, t) ((hdr)->type = (t))
#define ICMPH_CODE_SET(hdr, c) ((hdr)->code = (c))
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/bpstruct.h"
#endif
/** This is the standard ICMP header only that the u32_t data
* is split to two u16_t like ICMP echo needs it.
* This header is also used for other ICMP types that do not
* use the data part.
*/
PACK_STRUCT_BEGIN
struct icmp_echo_hdr {
@@ -78,12 +98,6 @@ PACK_STRUCT_END
# include "arch/epstruct.h"
#endif
/* Compatibility defines, old versions used to combine type and code to an u16_t */
#define ICMPH_TYPE(hdr) ((hdr)->type)
#define ICMPH_CODE(hdr) ((hdr)->code)
#define ICMPH_TYPE_SET(hdr, t) ((hdr)->type = (t))
#define ICMPH_CODE_SET(hdr, c) ((hdr)->code = (c))
#ifdef __cplusplus
}
#endif