diff options
Diffstat (limited to 'usr/kinit/ipconfig/bootp_packet.h')
| -rw-r--r-- | usr/kinit/ipconfig/bootp_packet.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/usr/kinit/ipconfig/bootp_packet.h b/usr/kinit/ipconfig/bootp_packet.h new file mode 100644 index 0000000..1d5bd0d --- /dev/null +++ b/usr/kinit/ipconfig/bootp_packet.h @@ -0,0 +1,44 @@ +#ifndef BOOTP_PACKET_H +#define BOOTP_PACKET_H + +#include <sys/uio.h> + +struct netdev; + +/* packet ops */ +#define BOOTP_REQUEST 1 +#define BOOTP_REPLY 2 + +/* your basic bootp packet */ +struct bootp_hdr { + uint8_t op; + uint8_t htype; + uint8_t hlen; + uint8_t hops; + uint32_t xid; + uint16_t secs; + uint16_t flags; + uint32_t ciaddr; + uint32_t yiaddr; + uint32_t siaddr; + uint32_t giaddr; + uint8_t chaddr[16]; + char server_name[64]; + char boot_file[128]; + /* 312 bytes of extensions */ +}; + +/* + * memory size of BOOTP Vendor Extensions/DHCP Options for receiving + * + * generic_ether_mtu:1500, min_sizeof(ip_hdr):20, sizeof(udp_hdr):8 + * + * #define BOOTP_EXTS_SIZE (1500 - 20 - 8 - sizeof(struct bootp_hdr)) + */ +/* larger size for backward compatibility of ipconfig */ +#define BOOTP_EXTS_SIZE 1500 + +/* minimum length of BOOTP/DHCP packet on sending */ +#define BOOTP_MIN_LEN 300 + +#endif /* BOOTP_PACKET_H */ |