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https://github.com/xcat2/xNBA.git
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Michael Brown
f5fd4dec3b
Expose a function setting_applies() to allow a caller to determine whether or not a particular setting is applicable to a particular settings block. Restrict DHCP-backed settings blocks to accepting only DHCP-based settings. Restrict network device settings blocks to accepting only DHCP-based settings and network device-specific settings such as "mac". Inspired-by: Glenn Brown <glenn@myri.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
#ifndef _IPXE_DHCPOPTS_H
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#define _IPXE_DHCPOPTS_H
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/** @file
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*
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* DHCP options
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <stdint.h>
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/** A DHCP options block */
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struct dhcp_options {
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/** Option block raw data */
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void *data;
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/** Option block used length */
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size_t used_len;
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/** Option block allocated length */
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size_t alloc_len;
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/** Reallocate option block raw data
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*
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* @v options DHCP option block
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* @v len New length
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* @ret rc Return status code
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*/
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int ( * realloc ) ( struct dhcp_options *options, size_t len );
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};
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extern int dhcpopt_applies ( unsigned int tag );
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extern int dhcpopt_store ( struct dhcp_options *options, unsigned int tag,
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const void *data, size_t len );
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extern int dhcpopt_fetch ( struct dhcp_options *options, unsigned int tag,
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void *data, size_t len );
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extern void dhcpopt_init ( struct dhcp_options *options,
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void *data, size_t alloc_len,
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int ( * realloc ) ( struct dhcp_options *options,
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size_t len ) );
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extern void dhcpopt_update_used_len ( struct dhcp_options *options );
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extern int dhcpopt_no_realloc ( struct dhcp_options *options, size_t len );
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#endif /* _IPXE_DHCPOPTS_H */
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