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| author | Denys Vlasenko | 2010-03-22 15:22:14 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2010-03-22 15:22:14 +0100 |
| commit | 6b61629397e121de9e879ed31b9309e56f9286bc (patch) | |
| tree | 9a52938f0c53370c35de45393b809f90bb91a61a | |
| parent | dde8bdcc5bd6f25157ca5364b2991c837f1ef364 (diff) | |
| download | busybox-6b61629397e121de9e879ed31b9309e56f9286bc.zip busybox-6b61629397e121de9e879ed31b9309e56f9286bc.tar.gz | |
udhcp: make rfc derived doc more readable (but it still is contradictory)
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | networking/udhcp/common.h | 101 |
1 files changed, 41 insertions, 60 deletions
diff --git a/networking/udhcp/common.h b/networking/udhcp/common.h index 2ce6759..2179c53 100644 --- a/networking/udhcp/common.h +++ b/networking/udhcp/common.h @@ -176,67 +176,48 @@ uint8_t *dname_enc(const uint8_t *cstr, int clen, const char *src, int *retlen) // RFC 2131 Table 5: Fields and options used by DHCP clients // -// Field DHCPDISCOVER DHCPREQUEST DHCPDECLINE, -// DHCPINFORM DHCPRELEASE -// ----- ------------ ----------- ----------- -// 'op' BOOTREQUEST BOOTREQUEST BOOTREQUEST -// 'hops' 0 0 0 -// 'xid' selected by client 'xid' from server selected by -// DHCPOFFER message client -// 'secs' 0 or seconds since 0 or seconds since 0 -// DHCP process started DHCP process started -// 'flags' Set 'BROADCAST' Set 'BROADCAST' 0 -// flag if client flag if client -// requires broadcast requires broadcast -// reply reply -// 'ciaddr' 0 (DHCPDISCOVER) 0 or client's 0 (DHCPDECLINE) -// client's network address client's network -// network address (BOUND/RENEW/REBIND) address -// (DHCPINFORM) (DHCPRELEASE) -// 'yiaddr' 0 0 0 -// 'siaddr' 0 0 0 -// 'giaddr' 0 0 0 -// 'chaddr' client's hardware client's hardware client's hardware -// address address address -// 'sname' options, if options, if (unused) -// indicated in indicated in -// 'sname/file' 'sname/file' -// option; otherwise option; otherwise -// unused unused -// 'file' options, if options, if (unused) -// indicated in indicated in -// 'sname/file' 'sname/file' -// option; otherwise option; otherwise -// unused unused -// 'options' options options (unused) +// Fiels 'hops', 'yiaddr', 'siaddr', 'giaddr' are always zero // -// Option DHCPDISCOVER DHCPREQUEST DHCPDECLINE, -// DHCPINFORM DHCPRELEASE -// ------ ------------ ----------- ----------- -// Requested IP address MAY MUST (in MUST -// (DISCOVER) SELECTING or (DHCPDECLINE), -// MUST NOT INIT-REBOOT) MUST NOT -// (INFORM) MUST NOT (in (DHCPRELEASE) -// BOUND or -// RENEWING) -// IP address lease time MAY MAY MUST NOT -// (DISCOVER) -// MUST NOT -// (INFORM) -// Use 'file'/'sname' fields MAY MAY MAY -// Client identifier MAY MAY MAY -// Vendor class identifier MAY MAY MUST NOT -// Server identifier MUST NOT MUST (after MUST -// SELECTING) -// MUST NOT (after -// INIT-REBOOT, -// BOUND, RENEWING -// or REBINDING) -// Parameter request list MAY MAY MUST NOT -// Maximum message size MAY MAY MUST NOT -// Message SHOULD NOT SHOULD NOT SHOULD -// Site-specific MAY MAY MUST NOT -// All others MAY MAY MUST NOT +// Field DHCPDISCOVER DHCPINFORM DHCPREQUEST DHCPDECLINE DHCPRELEASE +// ----- ------------ ------------ ----------- ----------- ----------- +// 'xid' selected by client selected by client 'xid' from server selected by client selected by client +// DHCPOFFER message +// 'secs' 0 or seconds since 0 or seconds since 0 or seconds since 0 0 +// DHCP process started DHCP process started DHCP process started +// 'flags' Set 'BROADCAST' Set 'BROADCAST' Set 'BROADCAST' 0 0 +// flag if client flag if client flag if client +// requires broadcast requires broadcast requires broadcast +// reply reply reply +// 'ciaddr' 0 client's IP 0 or client's IP 0 client's IP +// (BOUND/RENEW/REBIND) +// 'chaddr' client's MAC client's MAC client's MAC client's MAC client's MAC +// 'sname' options or sname options or sname options or sname (unused) (unused) +// 'file' options or file options or file options or file (unused) (unused) +// 'options' options options options message type opt message type opt +// +// Option DHCPDISCOVER DHCPINFORM DHCPREQUEST DHCPDECLINE DHCPRELEASE +// ------ ------------ ---------- ----------- ----------- ----------- +// Requested IP address MAY MUST NOT MUST (in MUST MUST NOT +// SELECTING or +// INIT-REBOOT) +// MUST NOT (in +// BOUND or +// RENEWING) +// IP address lease time MAY MUST NOT MAY MUST NOT MUST NOT +// Use 'file'/'sname' fields MAY MAY MAY MAY MAY +// Client identifier MAY MAY MAY MAY MAY +// Vendor class identifier MAY MAY MAY MUST NOT MUST NOT +// Server identifier MUST NOT MUST NOT MUST (after MUST MUST +// SELECTING) +// MUST NOT (after +// INIT-REBOOT, +// BOUND, RENEWING +// or REBINDING) +// Parameter request list MAY MAY MAY MUST NOT MUST NOT +// Maximum message size MAY MAY MAY MUST NOT MUST NOT +// Message SHOULD NOT SHOULD NOT SHOULD NOT SHOULD SHOULD +// Site-specific MAY MAY MAY MUST NOT MUST NOT +// All others MAY MAY MAY MUST NOT MUST NOT /*** Logging ***/ |