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| author | Michael Brown | 2008-03-27 17:31:31 +0100 |
|---|---|---|
| committer | Michael Brown | 2008-03-27 17:45:15 +0100 |
| commit | aa74a7d53cb972775efb0f3412f9cbc3b929ee43 (patch) | |
| tree | 00df302e454b27eb8efcddf5e90fa02864c568e4 /src/net/fakedhcp.c | |
| parent | [Settings] find_child_settings() accepts a NULL parent (diff) | |
| download | ipxe-aa74a7d53cb972775efb0f3412f9cbc3b929ee43.tar.gz ipxe-aa74a7d53cb972775efb0f3412f9cbc3b929ee43.tar.xz ipxe-aa74a7d53cb972775efb0f3412f9cbc3b929ee43.zip | |
[DHCP] Add support for ProxyDHCP requests
The PXE spec is (as usual) unclear on precisely when ProxyDHCPREQUESTs
should be issued. We adapt the following, slightly paranoid approach:
If an offer contains an IP address, then it is a normal DHCPOFFER.
If an offer contains an option #60 "PXEClient", then it is a
ProxyDHCPOFFER. Note that the same packet can be both a normal
DHCPOFFER and a ProxyDHCPOFFER.
After receiving the normal DHCPACK, if we have received a
ProxyDHCPOFFER, we unicast a ProxyDHCPREQUEST back to the ProxyDHCP
server on port 4011. If we time out waiting for a ProxyDHCPACK, we
treat this as a non-fatal error.
Diffstat (limited to 'src/net/fakedhcp.c')
| -rw-r--r-- | src/net/fakedhcp.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/net/fakedhcp.c b/src/net/fakedhcp.c index c3054db1..a10e442b 100644 --- a/src/net/fakedhcp.c +++ b/src/net/fakedhcp.c @@ -108,9 +108,10 @@ static int copy_settings ( struct dhcp_packet *dest, int create_fakedhcpdiscover ( struct net_device *netdev, void *data, size_t max_len ) { struct dhcp_packet dhcppkt; + struct in_addr ciaddr = { 0 }; int rc; - if ( ( rc = create_dhcp_request ( &dhcppkt, netdev, NULL, data, + if ( ( rc = dhcp_create_request ( &dhcppkt, netdev, ciaddr, NULL, data, max_len ) ) != 0 ) { DBG ( "Could not create DHCPDISCOVER: %s\n", strerror ( rc ) ); @@ -136,7 +137,7 @@ int create_fakedhcpack ( struct net_device *netdev, int rc; /* Create base DHCPACK packet */ - if ( ( rc = create_dhcp_packet ( &dhcppkt, netdev, DHCPACK, NULL, + if ( ( rc = dhcp_create_packet ( &dhcppkt, netdev, DHCPACK, NULL, data, max_len ) ) != 0 ) { DBG ( "Could not create DHCPACK: %s\n", strerror ( rc ) ); return rc; @@ -187,7 +188,7 @@ int create_fakeproxydhcpack ( struct net_device *netdev, } /* Create base DHCPACK packet */ - if ( ( rc = create_dhcp_packet ( &dhcppkt, netdev, DHCPACK, NULL, + if ( ( rc = dhcp_create_packet ( &dhcppkt, netdev, DHCPACK, NULL, data, max_len ) ) != 0 ) { DBG ( "Could not create ProxyDHCPACK: %s\n", strerror ( rc ) ); |