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udhcpc: filter unwanted packets in kernel

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(Cristian Ionescu-Idbohrn <cristian.ionescu-idbohrn@axis.com>)
This commit is contained in:
Denis Vlasenko
2008-01-25 22:46:34 +00:00
parent 893988182a
commit b76b9a4328
5 changed files with 64 additions and 10 deletions
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7
networking/udhcp/common.h
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@@ -14,6 +14,9 @@
#define DEFAULT_SCRIPT "/usr/share/udhcpc/default.script"
#define SERVER_PORT 67
#define CLIENT_PORT 68
extern const uint8_t MAC_BCAST_ADDR[6]; /* six all-ones */
/*** packet.h ***/
@@ -21,7 +24,7 @@ extern const uint8_t MAC_BCAST_ADDR[6]; /* six all-ones */
#include <netinet/udp.h>
#include <netinet/ip.h>
#define DHCP_OPTIONS_BUFSIZE 308
#define DHCP_OPTIONS_BUFSIZE 308
struct dhcpMessage {
uint8_t op;
@@ -93,7 +96,7 @@ int listen_socket(/*uint32_t ip,*/ int port, const char *inf);
int arpping(uint32_t test_ip, uint32_t from_ip, uint8_t *from_mac, const char *interface);
#if ENABLE_FEATURE_UDHCP_DEBUG
# define DEBUG(str, args...) bb_info_msg(str, ## args)
# define DEBUG(str, args...) bb_info_msg("### " str, ## args)
#else
# define DEBUG(str, args...) do {;} while (0)
#endif