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

/* SPDX-License-Identifier: LGPL-2.1+ */

#include <net/if.h>

#include "alloc-util.h"
#include "conf-parser.h"
#include "extract-word.h"
#include "geneve.h"
#include "netlink-util.h"
#include "networkd-manager.h"
#include "parse-util.h"
#include "string-table.h"
#include "string-util.h"
#include "strv.h"

#define GENEVE_FLOW_LABEL_MAX_MASK 0xFFFFFU
#define DEFAULT_GENEVE_DESTINATION_PORT 6081

static const char* const geneve_df_table[_NETDEV_GENEVE_DF_MAX] = {
        [NETDEV_GENEVE_DF_NO] = "no",
        [NETDEV_GENEVE_DF_YES] = "yes",
        [NETDEV_GENEVE_DF_INHERIT] = "inherit",
};

DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(geneve_df, GeneveDF, NETDEV_GENEVE_DF_YES);
DEFINE_CONFIG_PARSE_ENUM(config_parse_geneve_df, geneve_df, GeneveDF, "Failed to parse Geneve IPDoNotFragment= setting");

/* callback for geneve netdev's created without a backing Link */
static int geneve_netdev_create_handler(sd_netlink *rtnl, sd_netlink_message *m, NetDev *netdev) {
        int r;

        assert(netdev);
        assert(netdev->state != _NETDEV_STATE_INVALID);

        r = sd_netlink_message_get_errno(m);
        if (r == -EEXIST)
                log_netdev_info(netdev, "Geneve netdev exists, using existing without changing its parameters");
        else if (r < 0) {
                log_netdev_warning_errno(netdev, r, "Geneve netdev could not be created: %m");
                netdev_drop(netdev);

                return 1;
        }

        log_netdev_debug(netdev, "Geneve created");

        return 1;
}

static int netdev_geneve_create(NetDev *netdev) {
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
        Geneve *v;
        int r;

        assert(netdev);

        v = GENEVE(netdev);

        r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not allocate RTM_NEWLINK message: %m");

        r = sd_netlink_message_append_string(m, IFLA_IFNAME, netdev->ifname);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not append IFLA_IFNAME, attribute: %m");

        if (netdev->mac) {
                r = sd_netlink_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_ADDRESS attribute: %m");
        }

        if (netdev->mtu != 0) {
                r = sd_netlink_message_append_u32(m, IFLA_MTU, netdev->mtu);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_MTU attribute: %m");
        }

        r = sd_netlink_message_open_container(m, IFLA_LINKINFO);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");

        r = sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind));
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");

        if (v->id <= GENEVE_VID_MAX) {
                r = sd_netlink_message_append_u32(m, IFLA_GENEVE_ID, v->id);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_ID attribute: %m");
        }

        if (in_addr_is_null(v->remote_family, &v->remote) == 0) {
                if (v->remote_family == AF_INET)
                        r = sd_netlink_message_append_in_addr(m, IFLA_GENEVE_REMOTE, &v->remote.in);
                else
                        r = sd_netlink_message_append_in6_addr(m, IFLA_GENEVE_REMOTE6, &v->remote.in6);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_REMOTE/IFLA_GENEVE_REMOTE6 attribute: %m");
        }

        if (v->inherit) {
                r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TTL_INHERIT, 1);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TTL_INHERIT attribute: %m");
        } else {
                r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TTL, v->ttl);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TTL attribute: %m");
        }

        r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TOS, v->tos);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TOS attribute: %m");

        r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_CSUM, v->udpcsum);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_CSUM attribute: %m");

        r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_ZERO_CSUM6_TX, v->udp6zerocsumtx);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_ZERO_CSUM6_TX attribute: %m");

        r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_ZERO_CSUM6_RX, v->udp6zerocsumrx);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_ZERO_CSUM6_RX attribute: %m");

        if (v->dest_port != DEFAULT_GENEVE_DESTINATION_PORT) {
                r = sd_netlink_message_append_u16(m, IFLA_GENEVE_PORT, htobe16(v->dest_port));
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_PORT attribute: %m");
        }

        if (v->flow_label > 0) {
                r = sd_netlink_message_append_u32(m, IFLA_GENEVE_LABEL, htobe32(v->flow_label));
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_LABEL attribute: %m");
        }

        if (v->geneve_df != _NETDEV_GENEVE_DF_INVALID) {
                r = sd_netlink_message_append_u8(m, IFLA_GENEVE_DF, v->geneve_df);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_DF attribute: %m");
        }

        r = sd_netlink_message_close_container(m);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");

        r = sd_netlink_message_close_container(m);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");

        r = netlink_call_async(netdev->manager->rtnl, NULL, m, geneve_netdev_create_handler,
                               netdev_destroy_callback, netdev);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not send rtnetlink message: %m");

        netdev_ref(netdev);
        netdev->state = NETDEV_STATE_CREATING;

        log_netdev_debug(netdev, "Creating");

        return r;
}

int config_parse_geneve_vni(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) {
        Geneve *v = userdata;
        uint32_t f;
        int r;

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

        r = safe_atou32(rvalue, &f);
        if (r < 0) {
                log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Geneve VNI '%s'.", rvalue);
                return 0;
        }

        if (f > GENEVE_VID_MAX){
                log_syntax(unit, LOG_ERR, filename, line, r, "Geneve VNI out is of range '%s'.", rvalue);
                return 0;
        }

        v->id = f;

        return 0;
}

int config_parse_geneve_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) {
        Geneve *v = userdata;
        union in_addr_union *addr = data, buffer;
        int r, f;

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

        r = in_addr_from_string_auto(rvalue, &f, &buffer);
        if (r < 0) {
                log_syntax(unit, LOG_ERR, filename, line, r, "geneve '%s' address is invalid, ignoring assignment: %s", lvalue, rvalue);
                return 0;
        }

        r = in_addr_is_multicast(f, &buffer);
        if (r > 0) {
                log_syntax(unit, LOG_ERR, filename, line, 0, "geneve invalid multicast '%s' address, ignoring assignment: %s", lvalue, rvalue);
                return 0;
        }

        v->remote_family = f;
        *addr = buffer;

        return 0;
}

int config_parse_geneve_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) {
        Geneve *v = userdata;
        uint32_t f;
        int r;

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

        r = safe_atou32(rvalue, &f);
        if (r < 0) {
                log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Geneve flow label '%s'.", rvalue);
                return 0;
        }

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

        v->flow_label = f;

        return 0;
}

int config_parse_geneve_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) {
        Geneve *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_ERR, filename, line, r,
                                   "Failed to parse Geneve TTL '%s', ignoring assignment: %m", rvalue);
                        return 0;
                }

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

                v->ttl = f;
        }

        return 0;
}

static int netdev_geneve_verify(NetDev *netdev, const char *filename) {
        Geneve *v = GENEVE(netdev);

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

        if (v->id > GENEVE_VID_MAX)
                return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
                                                "%s: Geneve without valid VNI (or Virtual Network Identifier) configured. Ignoring.",
                                                filename);

        return 0;
}

static void geneve_init(NetDev *netdev) {
        Geneve *v;

        assert(netdev);

        v = GENEVE(netdev);

        assert(v);

        v->id = GENEVE_VID_MAX + 1;
        v->geneve_df = _NETDEV_GENEVE_DF_INVALID;
        v->dest_port = DEFAULT_GENEVE_DESTINATION_PORT;
        v->udpcsum = false;
        v->udp6zerocsumtx = false;
        v->udp6zerocsumrx = false;
}

const NetDevVTable geneve_vtable = {
        .object_size = sizeof(Geneve),
        .init = geneve_init,
        .sections = NETDEV_COMMON_SECTIONS "GENEVE\0",
        .create = netdev_geneve_create,
        .create_type = NETDEV_CREATE_INDEPENDENT,
        .config_verify = netdev_geneve_verify,
        .generate_mac = true,
};
Commit	Line	Data
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
6598e046 SS	2
	3	#include <net/if.h>
	4
	5	#include "alloc-util.h"
	6	#include "conf-parser.h"
	7	#include "extract-word.h"
	8	#include "geneve.h"
302a796f	9	#include "netlink-util.h"
737f1405	10	#include "networkd-manager.h"
6598e046	11	#include "parse-util.h"
aac35019	12	#include "string-table.h"
6598e046 SS	13	#include "string-util.h"
6598e046 SS	14	#include "strv.h"
6598e046 SS	15
	16	#define GENEVE_FLOW_LABEL_MAX_MASK 0xFFFFFU
	17	#define DEFAULT_GENEVE_DESTINATION_PORT 6081
	18
aac35019 SS	19	static const char* const geneve_df_table[_NETDEV_GENEVE_DF_MAX] = {
	20	[NETDEV_GENEVE_DF_NO] = "no",
	21	[NETDEV_GENEVE_DF_YES] = "yes",
	22	[NETDEV_GENEVE_DF_INHERIT] = "inherit",
	23	};
	24
	25	DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(geneve_df, GeneveDF, NETDEV_GENEVE_DF_YES);
	26	DEFINE_CONFIG_PARSE_ENUM(config_parse_geneve_df, geneve_df, GeneveDF, "Failed to parse Geneve IPDoNotFragment= setting");
	27
6598e046	28	/* callback for geneve netdev's created without a backing Link */
302a796f	29	static int geneve_netdev_create_handler(sd_netlink rtnl, sd_netlink_message m, NetDev *netdev) {
6598e046 SS	30	int r;
6598e046 SS	31
1046bf9b	32	assert(netdev);
6598e046 SS	33	assert(netdev->state != _NETDEV_STATE_INVALID);
	34
	35	r = sd_netlink_message_get_errno(m);
	36	if (r == -EEXIST)
	37	log_netdev_info(netdev, "Geneve netdev exists, using existing without changing its parameters");
	38	else if (r < 0) {
	39	log_netdev_warning_errno(netdev, r, "Geneve netdev could not be created: %m");
	40	netdev_drop(netdev);
	41
	42	return 1;
	43	}
	44
	45	log_netdev_debug(netdev, "Geneve created");
	46
	47	return 1;
	48	}
	49
	50	static int netdev_geneve_create(NetDev *netdev) {
	51	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
	52	Geneve *v;
	53	int r;
	54
	55	assert(netdev);
	56
	57	v = GENEVE(netdev);
	58
	59	r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);
	60	if (r < 0)
	61	return log_netdev_error_errno(netdev, r, "Could not allocate RTM_NEWLINK message: %m");
	62
	63	r = sd_netlink_message_append_string(m, IFLA_IFNAME, netdev->ifname);
	64	if (r < 0)
	65	return log_netdev_error_errno(netdev, r, "Could not append IFLA_IFNAME, attribute: %m");
	66
	67	if (netdev->mac) {
	68	r = sd_netlink_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
	69	if (r < 0)
	70	return log_netdev_error_errno(netdev, r, "Could not append IFLA_ADDRESS attribute: %m");
	71	}
	72
4e964aa0	73	if (netdev->mtu != 0) {
6598e046 SS	74	r = sd_netlink_message_append_u32(m, IFLA_MTU, netdev->mtu);
	75	if (r < 0)
	76	return log_netdev_error_errno(netdev, r, "Could not append IFLA_MTU attribute: %m");
	77	}
	78
	79	r = sd_netlink_message_open_container(m, IFLA_LINKINFO);
	80	if (r < 0)
	81	return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
	82
	83	r = sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind));
	84	if (r < 0)
	85	return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
	86
	87	if (v->id <= GENEVE_VID_MAX) {
	88	r = sd_netlink_message_append_u32(m, IFLA_GENEVE_ID, v->id);
	89	if (r < 0)
	90	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_ID attribute: %m");
	91	}
	92
d40b01e4	93	if (in_addr_is_null(v->remote_family, &v->remote) == 0) {
6598e046 SS	94	if (v->remote_family == AF_INET)
	95	r = sd_netlink_message_append_in_addr(m, IFLA_GENEVE_REMOTE, &v->remote.in);
	96	else
	97	r = sd_netlink_message_append_in6_addr(m, IFLA_GENEVE_REMOTE6, &v->remote.in6);
6598e046	98	if (r < 0)
10490d90	99	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_REMOTE/IFLA_GENEVE_REMOTE6 attribute: %m");
6598e046 SS	100	}
6598e046 SS	101
d70c9bbd SS	102	if (v->inherit) {
	103	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TTL_INHERIT, 1);
	104	if (r < 0)
	105	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TTL_INHERIT attribute: %m");
	106	} else {
6598e046 SS	107	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TTL, v->ttl);
	108	if (r < 0)
	109	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TTL attribute: %m");
	110	}
	111
	112	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TOS, v->tos);
	113	if (r < 0)
	114	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TOS attribute: %m");
	115
	116	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_CSUM, v->udpcsum);
	117	if (r < 0)
	118	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_CSUM attribute: %m");
	119
	120	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_ZERO_CSUM6_TX, v->udp6zerocsumtx);
	121	if (r < 0)
	122	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_ZERO_CSUM6_TX attribute: %m");
	123
	124	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_ZERO_CSUM6_RX, v->udp6zerocsumrx);
	125	if (r < 0)
	126	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_ZERO_CSUM6_RX attribute: %m");
	127
	128	if (v->dest_port != DEFAULT_GENEVE_DESTINATION_PORT) {
	129	r = sd_netlink_message_append_u16(m, IFLA_GENEVE_PORT, htobe16(v->dest_port));
	130	if (r < 0)
	131	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_PORT attribute: %m");
	132	}
	133
	134	if (v->flow_label > 0) {
	135	r = sd_netlink_message_append_u32(m, IFLA_GENEVE_LABEL, htobe32(v->flow_label));
	136	if (r < 0)
	137	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_LABEL attribute: %m");
	138	}
	139
aac35019 SS	140	if (v->geneve_df != _NETDEV_GENEVE_DF_INVALID) {
	141	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_DF, v->geneve_df);
	142	if (r < 0)
	143	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_DF attribute: %m");
	144	}
	145
6598e046 SS	146	r = sd_netlink_message_close_container(m);
	147	if (r < 0)
	148	return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
	149
	150	r = sd_netlink_message_close_container(m);
	151	if (r < 0)
	152	return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
	153
302a796f YW	154	r = netlink_call_async(netdev->manager->rtnl, NULL, m, geneve_netdev_create_handler,
302a796f YW	155	netdev_destroy_callback, netdev);
6598e046 SS	156	if (r < 0)
	157	return log_netdev_error_errno(netdev, r, "Could not send rtnetlink message: %m");
	158
	159	netdev_ref(netdev);
6598e046 SS	160	netdev->state = NETDEV_STATE_CREATING;
	161
	162	log_netdev_debug(netdev, "Creating");
	163
6598e046 SS	164	return r;
	165	}
	166
	167	int config_parse_geneve_vni(const char *unit,
	168	const char *filename,
	169	unsigned line,
	170	const char *section,
	171	unsigned section_line,
	172	const char *lvalue,
	173	int ltype,
	174	const char *rvalue,
	175	void *data,
	176	void *userdata) {
	177	Geneve *v = userdata;
	178	uint32_t f;
	179	int r;
	180
	181	assert(filename);
	182	assert(lvalue);
	183	assert(rvalue);
	184	assert(data);
	185
	186	r = safe_atou32(rvalue, &f);
	187	if (r < 0) {
	188	log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Geneve VNI '%s'.", rvalue);
	189	return 0;
	190	}
	191
	192	if (f > GENEVE_VID_MAX){
	193	log_syntax(unit, LOG_ERR, filename, line, r, "Geneve VNI out is of range '%s'.", rvalue);
	194	return 0;
	195	}
	196
	197	v->id = f;
	198
	199	return 0;
	200	}
	201
6598e046 SS	202	int config_parse_geneve_address(const char *unit,
	203	const char *filename,
	204	unsigned line,
	205	const char *section,
	206	unsigned section_line,
	207	const char *lvalue,
	208	int ltype,
	209	const char *rvalue,
	210	void *data,
	211	void *userdata) {
	212	Geneve *v = userdata;
	213	union in_addr_union *addr = data, buffer;
	214	int r, f;
	215
	216	assert(filename);
	217	assert(lvalue);
	218	assert(rvalue);
	219	assert(data);
	220
	221	r = in_addr_from_string_auto(rvalue, &f, &buffer);
	222	if (r < 0) {
	223	log_syntax(unit, LOG_ERR, filename, line, r, "geneve '%s' address is invalid, ignoring assignment: %s", lvalue, rvalue);
	224	return 0;
	225	}
	226
	227	r = in_addr_is_multicast(f, &buffer);
	228	if (r > 0) {
	229	log_syntax(unit, LOG_ERR, filename, line, 0, "geneve invalid multicast '%s' address, ignoring assignment: %s", lvalue, rvalue);
	230	return 0;
	231	}
	232
	233	v->remote_family = f;
	234	*addr = buffer;
	235
	236	return 0;
	237	}
	238
6598e046 SS	239	int config_parse_geneve_flow_label(const char *unit,
	240	const char *filename,
	241	unsigned line,
	242	const char *section,
	243	unsigned section_line,
	244	const char *lvalue,
	245	int ltype,
	246	const char *rvalue,
	247	void *data,
	248	void *userdata) {
	249	Geneve *v = userdata;
	250	uint32_t f;
	251	int r;
	252
	253	assert(filename);
	254	assert(lvalue);
	255	assert(rvalue);
	256	assert(data);
	257
	258	r = safe_atou32(rvalue, &f);
	259	if (r < 0) {
	260	log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Geneve flow label '%s'.", rvalue);
	261	return 0;
	262	}
	263
	264	if (f & ~GENEVE_FLOW_LABEL_MAX_MASK) {
	265	log_syntax(unit, LOG_ERR, filename, line, r,
	266	"Geneve flow label '%s' not valid. Flow label range should be [0-1048575].", rvalue);
	267	return 0;
	268	}
	269
	270	v->flow_label = f;
	271
	272	return 0;
	273	}
	274
d70c9bbd SS	275	int config_parse_geneve_ttl(const char *unit,
	276	const char *filename,
	277	unsigned line,
	278	const char *section,
	279	unsigned section_line,
	280	const char *lvalue,
	281	int ltype,
	282	const char *rvalue,
	283	void *data,
	284	void *userdata) {
	285	Geneve *v = userdata;
	286	unsigned f;
	287	int r;
	288
	289	assert(filename);
	290	assert(lvalue);
	291	assert(rvalue);
	292	assert(data);
	293
	294	if (streq(rvalue, "inherit"))
	295	v->inherit = true;
	296	else {
	297	r = safe_atou(rvalue, &f);
	298	if (r < 0) {
	299	log_syntax(unit, LOG_ERR, filename, line, r,
	300	"Failed to parse Geneve TTL '%s', ignoring assignment: %m", rvalue);
	301	return 0;
	302	}
	303
	304	if (f > 255) {
	305	log_syntax(unit, LOG_ERR, filename, line, 0,
	306	"Invalid Geneve TTL '%s'. TTL must be <= 255. Ignoring assignment.", rvalue);
	307	return 0;
	308	}
	309
	310	v->ttl = f;
	311	}
	312
	313	return 0;
	314	}
	315
3ded5bbf SS	316	static int netdev_geneve_verify(NetDev netdev, const char filename) {
	317	Geneve *v = GENEVE(netdev);
	318
	319	assert(netdev);
	320	assert(v);
	321	assert(filename);
	322
328184d1 SS	323	if (v->id > GENEVE_VID_MAX)
	324	return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
	325	"%s: Geneve without valid VNI (or Virtual Network Identifier) configured. Ignoring.",
	326	filename);
3ded5bbf SS	327
	328	return 0;
	329	}
	330
6598e046 SS	331	static void geneve_init(NetDev *netdev) {
	332	Geneve *v;
	333
	334	assert(netdev);
	335
	336	v = GENEVE(netdev);
	337
	338	assert(v);
	339
	340	v->id = GENEVE_VID_MAX + 1;
aac35019	341	v->geneve_df = _NETDEV_GENEVE_DF_INVALID;
6598e046 SS	342	v->dest_port = DEFAULT_GENEVE_DESTINATION_PORT;
	343	v->udpcsum = false;
	344	v->udp6zerocsumtx = false;
	345	v->udp6zerocsumrx = false;
	346	}
	347
	348	const NetDevVTable geneve_vtable = {
	349	.object_size = sizeof(Geneve),
	350	.init = geneve_init,
130b812f	351	.sections = NETDEV_COMMON_SECTIONS "GENEVE\0",
6598e046 SS	352	.create = netdev_geneve_create,
6598e046 SS	353	.create_type = NETDEV_CREATE_INDEPENDENT,
3ded5bbf	354	.config_verify = netdev_geneve_verify,
daf0f8ca	355	.generate_mac = true,
6598e046	356	};