[thirdparty/systemd.git] / src / network / netdev / vxlan.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <net/if.h>
#include <netinet/in.h>
#include <linux/if_arp.h>

#include "conf-parser.h"
#include "alloc-util.h"
#include "extract-word.h"
#include "string-table.h"
#include "string-util.h"
#include "strv.h"
#include "parse-util.h"
#include "vxlan.h"

static const char* const df_table[_NETDEV_VXLAN_DF_MAX] = {
        [NETDEV_VXLAN_DF_NO] = "no",
        [NETDEV_VXLAN_DF_YES] = "yes",
        [NETDEV_VXLAN_DF_INHERIT] = "inherit",
};

DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(df, VxLanDF, NETDEV_VXLAN_DF_YES);
DEFINE_CONFIG_PARSE_ENUM(config_parse_df, df, VxLanDF, "Failed to parse VXLAN IPDoNotFragment= setting");

static int vxlan_get_local_address(VxLan *v, Link *link, int *ret_family, union in_addr_union *ret_address) {
        assert(v);

        if (v->local_type < 0) {
                if (ret_family)
                        *ret_family = v->local_family;
                if (ret_address)
                        *ret_address = v->local;
                return 0;
        }

        return link_get_local_address(link, v->local_type, v->local_family, ret_family, ret_address);
}

static int netdev_vxlan_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
        union in_addr_union local;
        int local_family, r;
        VxLan *v;

        assert(netdev);
        assert(m);

        v = VXLAN(netdev);

        assert(v);

        if (v->vni <= VXLAN_VID_MAX) {
                r = sd_netlink_message_append_u32(m, IFLA_VXLAN_ID, v->vni);
                if (r < 0)
                        return r;
        }

        if (in_addr_is_set(v->group_family, &v->group)) {
                if (v->group_family == AF_INET)
                        r = sd_netlink_message_append_in_addr(m, IFLA_VXLAN_GROUP, &v->group.in);
                else
                        r = sd_netlink_message_append_in6_addr(m, IFLA_VXLAN_GROUP6, &v->group.in6);
                if (r < 0)
                        return r;
        } else if (in_addr_is_set(v->remote_family, &v->remote)) {
                if (v->remote_family == AF_INET)
                        r = sd_netlink_message_append_in_addr(m, IFLA_VXLAN_GROUP, &v->remote.in);
                else
                        r = sd_netlink_message_append_in6_addr(m, IFLA_VXLAN_GROUP6, &v->remote.in6);
                if (r < 0)
                        return r;
        }

        r = vxlan_get_local_address(v, link, &local_family, &local);
        if (r < 0)
                return r;

        if (in_addr_is_set(local_family, &local)) {
                if (local_family == AF_INET)
                        r = sd_netlink_message_append_in_addr(m, IFLA_VXLAN_LOCAL, &local.in);
                else
                        r = sd_netlink_message_append_in6_addr(m, IFLA_VXLAN_LOCAL6, &local.in6);
                if (r < 0)
                        return r;
        }

        r = sd_netlink_message_append_u32(m, IFLA_VXLAN_LINK, link ? link->ifindex : 0);
        if (r < 0)
                return r;

        if (v->inherit) {
                r = sd_netlink_message_append_flag(m, IFLA_VXLAN_TTL_INHERIT);
                if (r < 0)
                        return r;
        } else {
                r = sd_netlink_message_append_u8(m, IFLA_VXLAN_TTL, v->ttl);
                if (r < 0)
                        return r;
        }

        if (v->tos != 0) {
                r = sd_netlink_message_append_u8(m, IFLA_VXLAN_TOS, v->tos);
                if (r < 0)
                        return r;
        }

        r = sd_netlink_message_append_u8(m, IFLA_VXLAN_LEARNING, v->learning);
        if (r < 0)
                return r;

        r = sd_netlink_message_append_u8(m, IFLA_VXLAN_RSC, v->route_short_circuit);
        if (r < 0)
                return r;

        r = sd_netlink_message_append_u8(m, IFLA_VXLAN_PROXY, v->arp_proxy);
        if (r < 0)
                return r;

        r = sd_netlink_message_append_u8(m, IFLA_VXLAN_L2MISS, v->l2miss);
        if (r < 0)
                return r;

        r = sd_netlink_message_append_u8(m, IFLA_VXLAN_L3MISS, v->l3miss);
        if (r < 0)
                return r;

        if (v->fdb_ageing != 0) {
                r = sd_netlink_message_append_u32(m, IFLA_VXLAN_AGEING, v->fdb_ageing / USEC_PER_SEC);
                if (r < 0)
                        return r;
        }

        if (v->max_fdb != 0) {
                r = sd_netlink_message_append_u32(m, IFLA_VXLAN_LIMIT, v->max_fdb);
                if (r < 0)
                        return r;
        }

        r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_CSUM, v->udpcsum);
        if (r < 0)
                return r;

        r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, v->udp6zerocsumtx);
        if (r < 0)
                return r;

        r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, v->udp6zerocsumrx);
        if (r < 0)
                return r;

        r = sd_netlink_message_append_u8(m, IFLA_VXLAN_REMCSUM_TX, v->remote_csum_tx);
        if (r < 0)
                return r;

        r = sd_netlink_message_append_u8(m, IFLA_VXLAN_REMCSUM_RX, v->remote_csum_rx);
        if (r < 0)
                return r;

        r = sd_netlink_message_append_u16(m, IFLA_VXLAN_PORT, htobe16(v->dest_port));
        if (r < 0)
                return r;

        if (v->port_range.low != 0 || v->port_range.high != 0) {
                struct ifla_vxlan_port_range port_range;

                port_range.low = htobe16(v->port_range.low);
                port_range.high = htobe16(v->port_range.high);

                r = sd_netlink_message_append_data(m, IFLA_VXLAN_PORT_RANGE, &port_range, sizeof(port_range));
                if (r < 0)
                        return r;
        }

        r = sd_netlink_message_append_u32(m, IFLA_VXLAN_LABEL, htobe32(v->flow_label));
        if (r < 0)
                return r;

        if (v->group_policy) {
                r = sd_netlink_message_append_flag(m, IFLA_VXLAN_GBP);
                if (r < 0)
                        return r;
        }

        if (v->generic_protocol_extension) {
                r = sd_netlink_message_append_flag(m, IFLA_VXLAN_GPE);
                if (r < 0)
                        return r;
        }

        if (v->df != _NETDEV_VXLAN_DF_INVALID) {
                r = sd_netlink_message_append_u8(m, IFLA_VXLAN_DF, v->df);
                if (r < 0)
                        return r;
        }

        return 0;
}

int config_parse_vxlan_address(
                const char *unit,
                const char *filename,
                unsigned line,
                const char *section,
                unsigned section_line,
                const char *lvalue,
                int ltype,
                const char *rvalue,
                void *data,
                void *userdata) {

        VxLan *v = ASSERT_PTR(userdata);
        union in_addr_union *addr = data, buffer;
        int *family, f, r;

        assert(filename);
        assert(lvalue);
        assert(rvalue);
        assert(data);

        if (streq(lvalue, "Local"))
                family = &v->local_family;
        else if (streq(lvalue, "Remote"))
                family = &v->remote_family;
        else if (streq(lvalue, "Group"))
                family = &v->group_family;
        else
                assert_not_reached();

        if (isempty(rvalue)) {
                *addr = IN_ADDR_NULL;
                *family = AF_UNSPEC;
                return 0;
        }

        if (streq(lvalue, "Local")) {
                NetDevLocalAddressType t;

                t = netdev_local_address_type_from_string(rvalue);
                if (t >= 0) {
                        v->local = IN_ADDR_NULL;
                        v->local_family = AF_UNSPEC;
                        v->local_type = t;
                        return 0;
                }
        }

        r = in_addr_from_string_auto(rvalue, &f, &buffer);
        if (r < 0) {
                log_syntax(unit, LOG_WARNING, filename, line, r,
                           "Failed to parse %s=, ignoring assignment: %s", lvalue, rvalue);
                return 0;
        }

        r = in_addr_is_multicast(f, &buffer);

        if (streq(lvalue, "Group")) {
                if (r <= 0) {
                        log_syntax(unit, LOG_WARNING, filename, line, 0,
                                   "%s= must be a multicast address, ignoring assignment: %s", lvalue, rvalue);
                        return 0;
                }
        } else {
                if (r > 0) {
                        log_syntax(unit, LOG_WARNING, filename, line, 0,
                                   "%s= cannot be a multicast address, ignoring assignment: %s", lvalue, rvalue);
                        return 0;
                }
        }

        if (streq(lvalue, "Local"))
                v->local_type = _NETDEV_LOCAL_ADDRESS_TYPE_INVALID;
        *addr = buffer;
        *family = f;

        return 0;
}

int config_parse_port_range(
                const char *unit,
                const char *filename,
                unsigned line,
                const char *section,
                unsigned section_line,
                const char *lvalue,
                int ltype,
                const char *rvalue,
                void *data,
                void *userdata) {

        VxLan *v = userdata;
        uint16_t low, high;
        int r;

        assert(filename);
        assert(lvalue);
        assert(rvalue);
        assert(data);

        r = parse_ip_port_range(rvalue, &low, &high);
        if (r < 0) {
                log_syntax(unit, LOG_WARNING, filename, line, r,
                           "Failed to parse VXLAN port range '%s'. Port should be greater than 0 and less than 65535.", rvalue);
                return 0;
        }

        v->port_range.low = low;
        v->port_range.high = high;

        return 0;
}

int config_parse_flow_label(
                const char *unit,
                const char *filename,
                unsigned line,
                const char *section,
                unsigned section_line,
                const char *lvalue,
                int ltype,
                const char *rvalue,
                void *data,
                void *userdata) {

        VxLan *v = userdata;
        unsigned f;
        int r;

        assert(filename);
        assert(lvalue);
        assert(rvalue);
        assert(data);

        r = safe_atou(rvalue, &f);
        if (r < 0) {
                log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse VXLAN flow label '%s'.", rvalue);
                return 0;
        }

        if (f & ~VXLAN_FLOW_LABEL_MAX_MASK) {
                log_syntax(unit, LOG_WARNING, filename, line, r,
                           "VXLAN flow label '%s' not valid. Flow label range should be [0-1048575].", rvalue);
                return 0;
        }

        v->flow_label = f;

        return 0;
}

int config_parse_vxlan_ttl(
                const char *unit,
                const char *filename,
                unsigned line,
                const char *section,
                unsigned section_line,
                const char *lvalue,
                int ltype,
                const char *rvalue,
                void *data,
                void *userdata) {

        VxLan *v = userdata;
        unsigned f;
        int r;

        assert(filename);
        assert(lvalue);
        assert(rvalue);
        assert(data);

        if (streq(rvalue, "inherit"))
                v->inherit = true;
        else {
                r = safe_atou(rvalue, &f);
                if (r < 0) {
                        log_syntax(unit, LOG_WARNING, filename, line, r,
                                   "Failed to parse VXLAN TTL '%s', ignoring assignment: %m", rvalue);
                        return 0;
                }

                if (f > 255) {
                        log_syntax(unit, LOG_WARNING, filename, line, 0,
                                   "Invalid VXLAN TTL '%s'. TTL must be <= 255. Ignoring assignment.", rvalue);
                        return 0;
                }

                v->ttl = f;
        }

        return 0;
}

static int netdev_vxlan_verify(NetDev *netdev, const char *filename) {
        VxLan *v = VXLAN(netdev);

        assert(netdev);
        assert(v);
        assert(filename);

        if (v->vni > VXLAN_VID_MAX)
                return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
                                                "%s: VXLAN without valid VNI (or VXLAN Segment ID) configured. Ignoring.",
                                                filename);

        if (v->ttl > 255)
                return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
                                                "%s: VXLAN TTL must be <= 255. Ignoring.",
                                                filename);

        if (!v->dest_port && v->generic_protocol_extension)
                v->dest_port = 4790;

        if (in_addr_is_set(v->group_family, &v->group) && in_addr_is_set(v->remote_family, &v->remote))
                return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
                                                "%s: VXLAN both 'Group=' and 'Remote=' cannot be specified. Ignoring.",
                                                filename);

        if (v->independent && v->local_type >= 0)
                return log_netdev_error_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
                                              "The local address cannot be '%s' when Independent= is enabled, ignoring.",
                                              strna(netdev_local_address_type_to_string(v->local_type)));

        return 0;
}

static int netdev_vxlan_is_ready_to_create(NetDev *netdev, Link *link) {
        VxLan *v;

        assert(netdev);

        v = VXLAN(netdev);

        assert(v);

        if (v->independent)
                return true;

        return vxlan_get_local_address(v, link, NULL, NULL) >= 0;
}

static void vxlan_init(NetDev *netdev) {
        VxLan *v;

        assert(netdev);

        v = VXLAN(netdev);

        assert(v);

        v->local_type = _NETDEV_LOCAL_ADDRESS_TYPE_INVALID;
        v->vni = VXLAN_VID_MAX + 1;
        v->df = _NETDEV_VXLAN_DF_INVALID;
        v->learning = true;
        v->udpcsum = false;
        v->udp6zerocsumtx = false;
        v->udp6zerocsumrx = false;
}

const NetDevVTable vxlan_vtable = {
        .object_size = sizeof(VxLan),
        .init = vxlan_init,
        .sections = NETDEV_COMMON_SECTIONS "VXLAN\0",
        .fill_message_create = netdev_vxlan_fill_message_create,
        .create_type = NETDEV_CREATE_STACKED,
        .is_ready_to_create = netdev_vxlan_is_ready_to_create,
        .config_verify = netdev_vxlan_verify,
        .iftype = ARPHRD_ETHER,
        .generate_mac = true,
};
Commit	Line	Data
db9ecf05	1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
326cb406	2
326cb406	3	#include <net/if.h>
9f0cf80d YW	4	#include <netinet/in.h>
9f0cf80d YW	5	#include <linux/if_arp.h>
326cb406	6
85a8eeee	7	#include "conf-parser.h"
ea0288d1	8	#include "alloc-util.h"
634f0f98	9	#include "extract-word.h"
1189c00a	10	#include "string-table.h"
d35e5d37 SS	11	#include "string-util.h"
d35e5d37 SS	12	#include "strv.h"
ea0288d1	13	#include "parse-util.h"
737f1405	14	#include "vxlan.h"
326cb406	15
1189c00a SS	16	static const char* const df_table[_NETDEV_VXLAN_DF_MAX] = {
	17	[NETDEV_VXLAN_DF_NO] = "no",
	18	[NETDEV_VXLAN_DF_YES] = "yes",
	19	[NETDEV_VXLAN_DF_INHERIT] = "inherit",
	20	};
	21
	22	DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(df, VxLanDF, NETDEV_VXLAN_DF_YES);
	23	DEFINE_CONFIG_PARSE_ENUM(config_parse_df, df, VxLanDF, "Failed to parse VXLAN IPDoNotFragment= setting");
	24
b886649c YW	25	static int vxlan_get_local_address(VxLan v, Link link, int ret_family, union in_addr_union ret_address) {
	26	assert(v);
	27
	28	if (v->local_type < 0) {
	29	if (ret_family)
	30	*ret_family = v->local_family;
	31	if (ret_address)
	32	*ret_address = v->local;
	33	return 0;
	34	}
	35
	36	return link_get_local_address(link, v->local_type, v->local_family, ret_family, ret_address);
	37	}
	38
1c4baffc	39	static int netdev_vxlan_fill_message_create(NetDev netdev, Link link, sd_netlink_message *m) {
b886649c YW	40	union in_addr_union local;
b886649c YW	41	int local_family, r;
c2353b2f	42	VxLan *v;
326cb406	43
3be1d7e0	44	assert(netdev);
326cb406 SS	45	assert(m);
326cb406 SS	46
c2353b2f SS	47	v = VXLAN(netdev);
	48
	49	assert(v);
326cb406	50
6f213e4a SS	51	if (v->vni <= VXLAN_VID_MAX) {
6f213e4a SS	52	r = sd_netlink_message_append_u32(m, IFLA_VXLAN_ID, v->vni);
f545680e	53	if (r < 0)
5b80ecea	54	return r;
326cb406 SS	55	}
326cb406 SS	56
94876904	57	if (in_addr_is_set(v->group_family, &v->group)) {
7c9b2690 SS	58	if (v->group_family == AF_INET)
7c9b2690 SS	59	r = sd_netlink_message_append_in_addr(m, IFLA_VXLAN_GROUP, &v->group.in);
d35e5d37	60	else
7c9b2690	61	r = sd_netlink_message_append_in6_addr(m, IFLA_VXLAN_GROUP6, &v->group.in6);
d35e5d37	62	if (r < 0)
5b80ecea	63	return r;
94876904	64	} else if (in_addr_is_set(v->remote_family, &v->remote)) {
fc1d9c7b SS	65	if (v->remote_family == AF_INET)
	66	r = sd_netlink_message_append_in_addr(m, IFLA_VXLAN_GROUP, &v->remote.in);
	67	else
	68	r = sd_netlink_message_append_in6_addr(m, IFLA_VXLAN_GROUP6, &v->remote.in6);
	69	if (r < 0)
5b80ecea	70	return r;
d35e5d37 SS	71	}
d35e5d37 SS	72
b886649c YW	73	r = vxlan_get_local_address(v, link, &local_family, &local);
b886649c YW	74	if (r < 0)
5b80ecea	75	return r;
b886649c YW	76
	77	if (in_addr_is_set(local_family, &local)) {
	78	if (local_family == AF_INET)
	79	r = sd_netlink_message_append_in_addr(m, IFLA_VXLAN_LOCAL, &local.in);
d35e5d37	80	else
b886649c	81	r = sd_netlink_message_append_in6_addr(m, IFLA_VXLAN_LOCAL6, &local.in6);
d35e5d37	82	if (r < 0)
5b80ecea	83	return r;
d35e5d37	84	}
326cb406	85
a9b8450b	86	r = sd_netlink_message_append_u32(m, IFLA_VXLAN_LINK, link ? link->ifindex : 0);
f545680e	87	if (r < 0)
5b80ecea	88	return r;
326cb406	89
f4a8ca32 SS	90	if (v->inherit) {
	91	r = sd_netlink_message_append_flag(m, IFLA_VXLAN_TTL_INHERIT);
	92	if (r < 0)
5b80ecea	93	return r;
f4a8ca32	94	} else {
1c4baffc	95	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_TTL, v->ttl);
f545680e	96	if (r < 0)
5b80ecea	97	return r;
326cb406 SS	98	}
326cb406 SS	99
7b3b9822	100	if (v->tos != 0) {
1c4baffc	101	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_TOS, v->tos);
f545680e	102	if (r < 0)
5b80ecea	103	return r;
326cb406 SS	104	}
326cb406 SS	105
1c4baffc	106	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_LEARNING, v->learning);
f545680e	107	if (r < 0)
5b80ecea	108	return r;
326cb406	109
1c4baffc	110	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_RSC, v->route_short_circuit);
f545680e	111	if (r < 0)
5b80ecea	112	return r;
85a8eeee	113
1c4baffc	114	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_PROXY, v->arp_proxy);
f545680e	115	if (r < 0)
5b80ecea	116	return r;
85a8eeee	117
1c4baffc	118	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_L2MISS, v->l2miss);
f545680e	119	if (r < 0)
5b80ecea	120	return r;
85a8eeee	121
1c4baffc	122	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_L3MISS, v->l3miss);
f545680e	123	if (r < 0)
5b80ecea	124	return r;
85a8eeee	125
7b3b9822	126	if (v->fdb_ageing != 0) {
1c4baffc	127	r = sd_netlink_message_append_u32(m, IFLA_VXLAN_AGEING, v->fdb_ageing / USEC_PER_SEC);
f545680e	128	if (r < 0)
5b80ecea	129	return r;
85a8eeee SS	130	}
85a8eeee SS	131
7b3b9822	132	if (v->max_fdb != 0) {
3dbcf579 SS	133	r = sd_netlink_message_append_u32(m, IFLA_VXLAN_LIMIT, v->max_fdb);
3dbcf579 SS	134	if (r < 0)
5b80ecea	135	return r;
3dbcf579 SS	136	}
3dbcf579 SS	137
1c4baffc	138	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_CSUM, v->udpcsum);
f545680e	139	if (r < 0)
5b80ecea	140	return r;
cffacc74	141
1c4baffc	142	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, v->udp6zerocsumtx);
f545680e	143	if (r < 0)
5b80ecea	144	return r;
cffacc74	145
1c4baffc	146	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, v->udp6zerocsumrx);
f545680e	147	if (r < 0)
5b80ecea	148	return r;
cffacc74	149
16441027 SS	150	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_REMCSUM_TX, v->remote_csum_tx);
16441027 SS	151	if (r < 0)
5b80ecea	152	return r;
16441027 SS	153
	154	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_REMCSUM_RX, v->remote_csum_rx);
	155	if (r < 0)
5b80ecea	156	return r;
16441027	157
ea0288d1 SS	158	r = sd_netlink_message_append_u16(m, IFLA_VXLAN_PORT, htobe16(v->dest_port));
ea0288d1 SS	159	if (r < 0)
5b80ecea	160	return r;
ea0288d1	161
173a6e29	162	if (v->port_range.low != 0 \|\| v->port_range.high != 0) {
ea0288d1 SS	163	struct ifla_vxlan_port_range port_range;
	164
	165	port_range.low = htobe16(v->port_range.low);
	166	port_range.high = htobe16(v->port_range.high);
	167
	168	r = sd_netlink_message_append_data(m, IFLA_VXLAN_PORT_RANGE, &port_range, sizeof(port_range));
	169	if (r < 0)
5b80ecea	170	return r;
ea0288d1 SS	171	}
ea0288d1 SS	172
d8653945 SS	173	r = sd_netlink_message_append_u32(m, IFLA_VXLAN_LABEL, htobe32(v->flow_label));
d8653945 SS	174	if (r < 0)
5b80ecea	175	return r;
d8653945	176
ea84fd5c SS	177	if (v->group_policy) {
	178	r = sd_netlink_message_append_flag(m, IFLA_VXLAN_GBP);
	179	if (r < 0)
5b80ecea	180	return r;
ea84fd5c SS	181	}
ea84fd5c SS	182
4cc0fd75 SS	183	if (v->generic_protocol_extension) {
	184	r = sd_netlink_message_append_flag(m, IFLA_VXLAN_GPE);
	185	if (r < 0)
5b80ecea	186	return r;
4cc0fd75 SS	187	}
4cc0fd75 SS	188
1189c00a SS	189	if (v->df != _NETDEV_VXLAN_DF_INVALID) {
	190	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_DF, v->df);
	191	if (r < 0)
5b80ecea	192	return r;
1189c00a SS	193	}
1189c00a SS	194
5b80ecea	195	return 0;
326cb406 SS	196	}
326cb406 SS	197
63481576 YW	198	int config_parse_vxlan_address(
	199	const char *unit,
	200	const char *filename,
	201	unsigned line,
	202	const char *section,
	203	unsigned section_line,
	204	const char *lvalue,
	205	int ltype,
	206	const char *rvalue,
	207	void *data,
	208	void *userdata) {
	209
99534007	210	VxLan *v = ASSERT_PTR(userdata);
85a8eeee	211	union in_addr_union *addr = data, buffer;
b886649c	212	int *family, f, r;
85a8eeee SS	213
	214	assert(filename);
	215	assert(lvalue);
	216	assert(rvalue);
	217	assert(data);
b886649c YW	218
	219	if (streq(lvalue, "Local"))
	220	family = &v->local_family;
	221	else if (streq(lvalue, "Remote"))
	222	family = &v->remote_family;
	223	else if (streq(lvalue, "Group"))
	224	family = &v->group_family;
	225	else
	226	assert_not_reached();
	227
	228	if (isempty(rvalue)) {
	229	*addr = IN_ADDR_NULL;
	230	*family = AF_UNSPEC;
	231	return 0;
	232	}
	233
	234	if (streq(lvalue, "Local")) {
	235	NetDevLocalAddressType t;
	236
	237	t = netdev_local_address_type_from_string(rvalue);
	238	if (t >= 0) {
	239	v->local = IN_ADDR_NULL;
	240	v->local_family = AF_UNSPEC;
	241	v->local_type = t;
	242	return 0;
	243	}
	244	}
85a8eeee SS	245
	246	r = in_addr_from_string_auto(rvalue, &f, &buffer);
	247	if (r < 0) {
b886649c YW	248	log_syntax(unit, LOG_WARNING, filename, line, r,
b886649c YW	249	"Failed to parse %s=, ignoring assignment: %s", lvalue, rvalue);
85a8eeee SS	250	return 0;
	251	}
	252
d35e5d37 SS	253	r = in_addr_is_multicast(f, &buffer);
d35e5d37 SS	254
bf443be9	255	if (streq(lvalue, "Group")) {
d35e5d37	256	if (r <= 0) {
b886649c YW	257	log_syntax(unit, LOG_WARNING, filename, line, 0,
b886649c YW	258	"%s= must be a multicast address, ignoring assignment: %s", lvalue, rvalue);
d35e5d37 SS	259	return 0;
d35e5d37 SS	260	}
d35e5d37 SS	261	} else {
d35e5d37 SS	262	if (r > 0) {
b886649c YW	263	log_syntax(unit, LOG_WARNING, filename, line, 0,
b886649c YW	264	"%s= cannot be a multicast address, ignoring assignment: %s", lvalue, rvalue);
d35e5d37 SS	265	return 0;
d35e5d37 SS	266	}
85a8eeee SS	267	}
85a8eeee SS	268
b886649c YW	269	if (streq(lvalue, "Local"))
b886649c YW	270	v->local_type = _NETDEV_LOCAL_ADDRESS_TYPE_INVALID;
85a8eeee	271	*addr = buffer;
b886649c	272	*family = f;
85a8eeee SS	273
	274	return 0;
	275	}
	276
63481576 YW	277	int config_parse_port_range(
	278	const char *unit,
	279	const char *filename,
	280	unsigned line,
	281	const char *section,
	282	unsigned section_line,
	283	const char *lvalue,
	284	int ltype,
	285	const char *rvalue,
	286	void *data,
	287	void *userdata) {
	288
ea0288d1	289	VxLan *v = userdata;
173a6e29	290	uint16_t low, high;
ea0288d1 SS	291	int r;
	292
	293	assert(filename);
	294	assert(lvalue);
	295	assert(rvalue);
	296	assert(data);
	297
173a6e29	298	r = parse_ip_port_range(rvalue, &low, &high);
ea0288d1	299	if (r < 0) {
d96edb2c	300	log_syntax(unit, LOG_WARNING, filename, line, r,
173a6e29	301	"Failed to parse VXLAN port range '%s'. Port should be greater than 0 and less than 65535.", rvalue);
ea0288d1 SS	302	return 0;
	303	}
	304
	305	v->port_range.low = low;
	306	v->port_range.high = high;
	307
	308	return 0;
	309	}
	310
63481576 YW	311	int config_parse_flow_label(
	312	const char *unit,
	313	const char *filename,
	314	unsigned line,
	315	const char *section,
	316	unsigned section_line,
	317	const char *lvalue,
	318	int ltype,
	319	const char *rvalue,
	320	void *data,
	321	void *userdata) {
	322
d8653945 SS	323	VxLan *v = userdata;
	324	unsigned f;
	325	int r;
	326
	327	assert(filename);
	328	assert(lvalue);
	329	assert(rvalue);
	330	assert(data);
	331
	332	r = safe_atou(rvalue, &f);
	333	if (r < 0) {
d96edb2c	334	log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse VXLAN flow label '%s'.", rvalue);
d8653945 SS	335	return 0;
	336	}
	337
	338	if (f & ~VXLAN_FLOW_LABEL_MAX_MASK) {
d96edb2c	339	log_syntax(unit, LOG_WARNING, filename, line, r,
d8653945 SS	340	"VXLAN flow label '%s' not valid. Flow label range should be [0-1048575].", rvalue);
	341	return 0;
	342	}
	343
	344	v->flow_label = f;
	345
	346	return 0;
	347	}
	348
63481576 YW	349	int config_parse_vxlan_ttl(
	350	const char *unit,
	351	const char *filename,
	352	unsigned line,
	353	const char *section,
	354	unsigned section_line,
	355	const char *lvalue,
	356	int ltype,
	357	const char *rvalue,
	358	void *data,
	359	void *userdata) {
	360
f4a8ca32 SS	361	VxLan *v = userdata;
	362	unsigned f;
	363	int r;
	364
	365	assert(filename);
	366	assert(lvalue);
	367	assert(rvalue);
	368	assert(data);
	369
	370	if (streq(rvalue, "inherit"))
	371	v->inherit = true;
	372	else {
	373	r = safe_atou(rvalue, &f);
	374	if (r < 0) {
d96edb2c	375	log_syntax(unit, LOG_WARNING, filename, line, r,
f4a8ca32 SS	376	"Failed to parse VXLAN TTL '%s', ignoring assignment: %m", rvalue);
	377	return 0;
	378	}
	379
	380	if (f > 255) {
d96edb2c	381	log_syntax(unit, LOG_WARNING, filename, line, 0,
f4a8ca32 SS	382	"Invalid VXLAN TTL '%s'. TTL must be <= 255. Ignoring assignment.", rvalue);
	383	return 0;
	384	}
	385
	386	v->ttl = f;
	387	}
	388
	389	return 0;
	390	}
	391
3be1d7e0	392	static int netdev_vxlan_verify(NetDev netdev, const char filename) {
aa9f1140 TG	393	VxLan *v = VXLAN(netdev);
aa9f1140 TG	394
326cb406	395	assert(netdev);
aa9f1140	396	assert(v);
3be1d7e0	397	assert(filename);
326cb406	398
76fbd4d7 SS	399	if (v->vni > VXLAN_VID_MAX)
	400	return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
	401	"%s: VXLAN without valid VNI (or VXLAN Segment ID) configured. Ignoring.",
	402	filename);
	403
	404	if (v->ttl > 255)
	405	return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
	406	"%s: VXLAN TTL must be <= 255. Ignoring.",
	407	filename);
326cb406	408
1c8b0ecc SS	409	if (!v->dest_port && v->generic_protocol_extension)
	410	v->dest_port = 4790;
	411
94876904	412	if (in_addr_is_set(v->group_family, &v->group) && in_addr_is_set(v->remote_family, &v->remote))
fc1d9c7b SS	413	return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
	414	"%s: VXLAN both 'Group=' and 'Remote=' cannot be specified. Ignoring.",
	415	filename);
	416
b886649c YW	417	if (v->independent && v->local_type >= 0)
	418	return log_netdev_error_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
	419	"The local address cannot be '%s' when Independent= is enabled, ignoring.",
	420	strna(netdev_local_address_type_to_string(v->local_type)));
	421
326cb406 SS	422	return 0;
326cb406 SS	423	}
3be1d7e0	424
b886649c YW	425	static int netdev_vxlan_is_ready_to_create(NetDev netdev, Link link) {
	426	VxLan *v;
	427
	428	assert(netdev);
b886649c YW	429
	430	v = VXLAN(netdev);
	431
	432	assert(v);
	433
5d4a925a YW	434	if (v->independent)
	435	return true;
	436
b886649c YW	437	return vxlan_get_local_address(v, link, NULL, NULL) >= 0;
	438	}
	439
aa9f1140	440	static void vxlan_init(NetDev *netdev) {
c2353b2f	441	VxLan *v;
aa9f1140 TG	442
aa9f1140 TG	443	assert(netdev);
c2353b2f SS	444
	445	v = VXLAN(netdev);
	446
aa9f1140 TG	447	assert(v);
aa9f1140 TG	448
b886649c	449	v->local_type = _NETDEV_LOCAL_ADDRESS_TYPE_INVALID;
6f213e4a	450	v->vni = VXLAN_VID_MAX + 1;
1189c00a	451	v->df = _NETDEV_VXLAN_DF_INVALID;
aa9f1140	452	v->learning = true;
cffacc74 SS	453	v->udpcsum = false;
	454	v->udp6zerocsumtx = false;
	455	v->udp6zerocsumrx = false;
aa9f1140 TG	456	}
aa9f1140 TG	457
3be1d7e0	458	const NetDevVTable vxlan_vtable = {
aa9f1140 TG	459	.object_size = sizeof(VxLan),
aa9f1140 TG	460	.init = vxlan_init,
130b812f	461	.sections = NETDEV_COMMON_SECTIONS "VXLAN\0",
aa9f1140 TG	462	.fill_message_create = netdev_vxlan_fill_message_create,
aa9f1140 TG	463	.create_type = NETDEV_CREATE_STACKED,
b886649c	464	.is_ready_to_create = netdev_vxlan_is_ready_to_create,
3be1d7e0	465	.config_verify = netdev_vxlan_verify,
9f0cf80d	466	.iftype = ARPHRD_ETHER,
daf0f8ca	467	.generate_mac = true,
3be1d7e0	468	};