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Shrinked ICMP code, added option to NOT check icoming ECHO pbuf for size (just use it): LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN

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This commit is contained in:
goldsimon
2009-05-09 08:36:36 +00:00
parent c752e5731c
commit 105d72a3c2
3 changed files with 58 additions and 66 deletions
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33
src/include/ipv4/lwip/icmp.h
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@@ -78,39 +78,30 @@ void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t);
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/bpstruct.h"
#endif
/** This is the standard ICMP header only that the u32_t data
* is splitted 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 {
PACK_STRUCT_FIELD(u16_t _type_code);
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u16_t id);
PACK_STRUCT_FIELD(u16_t seqno);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
PACK_STRUCT_BEGIN
struct icmp_dur_hdr {
PACK_STRUCT_FIELD(u16_t _type_code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u32_t unused);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
PACK_STRUCT_BEGIN
struct icmp_te_hdr {
PACK_STRUCT_FIELD(u16_t _type_code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u32_t unused);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/epstruct.h"
#endif
#define ICMPH_TYPE(hdr) (ntohs((hdr)->_type_code) >> 8)
#define ICMPH_CODE(hdr) (ntohs((hdr)->_type_code) & 0xff)
#define ICMPH_TYPE(hdr) ((hdr)->type)
#define ICMPH_CODE(hdr) ((hdr)->code)
#define ICMPH_TYPE_SET(hdr, type) ((hdr)->_type_code = htons(ICMPH_CODE(hdr) | ((type) << 8)))
#define ICMPH_CODE_SET(hdr, code) ((hdr)->_type_code = htons((code) | (ICMPH_TYPE(hdr) << 8)))
/** Combines type and code to an u16_t */
#define ICMPH_TYPE_SET(hdr, t) ((hdr)->type = (t))
#define ICMPH_CODE_SET(hdr, c) ((hdr)->code = (c))
#ifdef __cplusplus
}