[thirdparty/systemd.git] / src / basic / missing_network.h

/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once

/* linux/in6.h or netinet/in.h */
#ifndef IPV6_UNICAST_IF
#define IPV6_UNICAST_IF 76
#endif

/* Not exposed but defined at include/net/ip.h */
#ifndef IPV4_MIN_MTU
#define IPV4_MIN_MTU 68
#endif

/* linux/ipv6.h */
#ifndef IPV6_MIN_MTU
#define IPV6_MIN_MTU 1280
#endif

/* Note that LOOPBACK_IFINDEX is currently not exposed by the
 * kernel/glibc, but hardcoded internally by the kernel.  However, as
 * it is exported to userspace indirectly via rtnetlink and the
 * ioctls, and made use of widely we define it here too, in a way that
 * is compatible with the kernel's internal definition. */
#ifndef LOOPBACK_IFINDEX
#define LOOPBACK_IFINDEX 1
#endif

/* Not exposed yet. Similar values are defined in net/ethernet.h */
#ifndef ETHERTYPE_LLDP
#define ETHERTYPE_LLDP 0x88cc
#endif
Commit	Line	Data
9714c020 YW	1	/* SPDX-License-Identifier: LGPL-2.1+ */
	2	#pragma once
	3
01234e1f	4	/* linux/in6.h or netinet/in.h */
9714c020 YW	5	#ifndef IPV6_UNICAST_IF
	6	#define IPV6_UNICAST_IF 76
	7	#endif
	8
01234e1f	9	/* Not exposed but defined at include/net/ip.h */
9714c020 YW	10	#ifndef IPV4_MIN_MTU
	11	#define IPV4_MIN_MTU 68
	12	#endif
	13
01234e1f	14	/* linux/ipv6.h */
9714c020 YW	15	#ifndef IPV6_MIN_MTU
	16	#define IPV6_MIN_MTU 1280
	17	#endif
	18
01234e1f	19	/* Note that LOOPBACK_IFINDEX is currently not exposed by the
ec3f6df9 YW	20	* kernel/glibc, but hardcoded internally by the kernel. However, as
	21	* it is exported to userspace indirectly via rtnetlink and the
	22	* ioctls, and made use of widely we define it here too, in a way that
	23	* is compatible with the kernel's internal definition. */
	24	#ifndef LOOPBACK_IFINDEX
	25	#define LOOPBACK_IFINDEX 1
	26	#endif
8f849570 YW	27
	28	/* Not exposed yet. Similar values are defined in net/ethernet.h */
	29	#ifndef ETHERTYPE_LLDP
	30	#define ETHERTYPE_LLDP 0x88cc
	31	#endif