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udhcp: pass pointer to whole packet to "add option" functions

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This is needed for "overflow option" support

function                                             old     new   delta
udhcp_find_option                                      -      34     +34
udhcp_add_binary_option                               94     106     +12
write_leases                                         227     223      -4
udhcp_init_header                                     86      82      -4
send_release                                         104      99      -5
init_packet                                           87      81      -6
add_client_options                                   160     154      -6
add_server_options                                   100      92      -8
udhcpd_main                                         1964    1954     -10
udhcpc_main                                         2859    2837     -22
find_option                                           34       -     -34
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/8 up/down: 46/-99)            Total: -53 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2010-03-26 09:32:09 +01:00
parent a8f6b99987
commit 7724c766bd
8 changed files with 37 additions and 34 deletions
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6
networking/udhcp/common.h
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@@ -172,13 +172,13 @@ extern const uint8_t dhcp_option_lengths[];
uint8_t *udhcp_get_option(struct dhcp_packet *packet, int code) FAST_FUNC;
int udhcp_end_option(uint8_t *optionptr) FAST_FUNC;
void udhcp_add_binary_option(uint8_t *optionptr, uint8_t *addopt) FAST_FUNC;
void udhcp_add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data) FAST_FUNC;
void udhcp_add_binary_option(struct dhcp_packet *packet, uint8_t *addopt) FAST_FUNC;
void udhcp_add_simple_option(struct dhcp_packet *packet, uint8_t code, uint32_t data) FAST_FUNC;
#if ENABLE_FEATURE_UDHCP_RFC3397
char *dname_dec(const uint8_t *cstr, int clen, const char *pre) FAST_FUNC;
uint8_t *dname_enc(const uint8_t *cstr, int clen, const char *src, int *retlen) FAST_FUNC;
#endif
struct option_set *find_option(struct option_set *opt_list, uint8_t code) FAST_FUNC;
struct option_set *udhcp_find_option(struct option_set *opt_list, uint8_t code) FAST_FUNC;
// RFC 2131 Table 5: Fields and options used by DHCP clients