From d5cf0589940c1cfd5907a2fd8183064ec2244617 Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Thu, 12 Jun 2014 16:05:48 +0100 Subject: [PATCH] [iscsi] Include IP address origin in iBFT The iBFT includes an "origin" field to indicate the source of the IP address. We use the heuristic of assuming that the source should be "manual" if the IP address originates directly from the network device settings block, and "DHCP" otherwise. This is an imperfect guess, but is likely to be correct in most common situations. Originally-implemented-by: Hannes Reinecke Signed-off-by: Michael Brown --- src/drivers/block/ibft.c | 7 +++++++ src/include/ipxe/ibft.h | 8 ++++++++ 2 files changed, 15 insertions(+) diff --git a/src/drivers/block/ibft.c b/src/drivers/block/ibft.c index f61add32..6aabd766 100644 --- a/src/drivers/block/ibft.c +++ b/src/drivers/block/ibft.c @@ -236,6 +236,7 @@ static int ibft_fill_nic ( struct ibft_nic *nic, struct in_addr netmask_addr = { 0 }; unsigned int netmask_count = 0; struct settings *parent = netdev_settings ( netdev ); + struct settings *origin; int rc; /* Fill in common header */ @@ -245,6 +246,12 @@ static int ibft_fill_nic ( struct ibft_nic *nic, nic->header.flags = ( IBFT_FL_NIC_BLOCK_VALID | IBFT_FL_NIC_FIRMWARE_BOOT_SELECTED ); + /* Determine origin of IP address */ + fetch_setting ( parent, &ip_setting, &origin, NULL, NULL, 0 ); + nic->origin = ( ( origin == parent ) ? + IBFT_NIC_ORIGIN_MANUAL : IBFT_NIC_ORIGIN_DHCP ); + DBG ( "iBFT NIC origin = %d\n", nic->origin ); + /* Extract values from configuration settings */ ibft_set_ipaddr_setting ( parent, &nic->ip_address, &ip_setting, 1 ); DBG ( "iBFT NIC IP = %s\n", ibft_ipaddr ( &nic->ip_address ) ); diff --git a/src/include/ipxe/ibft.h b/src/include/ipxe/ibft.h index 73372122..35f15105 100644 --- a/src/include/ipxe/ibft.h +++ b/src/include/ipxe/ibft.h @@ -197,6 +197,14 @@ struct ibft_nic { /** NIC global / link local */ #define IBFT_FL_NIC_GLOBAL 0x04 +/** NIC IP address origin */ +#define IBFT_NIC_ORIGIN_OTHER 0x00 +#define IBFT_NIC_ORIGIN_MANUAL 0x01 +#define IBFT_NIC_ORIGIN_WELLKNOWN 0x02 +#define IBFT_NIC_ORIGIN_DHCP 0x03 +#define IBFT_NIC_ORIGIN_RA 0x04 +#define IBFT_NIC_ORIGIN_UNCHANGED 0x0f + /** * iBFT Target structure *