[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 "missing.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 = "Match\0NetDev\0GENEVE\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"
737f1405	9	#include "missing.h"
302a796f	10	#include "netlink-util.h"
737f1405	11	#include "networkd-manager.h"
6598e046	12	#include "parse-util.h"
aac35019	13	#include "string-table.h"
6598e046 SS	14	#include "string-util.h"
6598e046 SS	15	#include "strv.h"
6598e046 SS	16
	17	#define GENEVE_FLOW_LABEL_MAX_MASK 0xFFFFFU
	18	#define DEFAULT_GENEVE_DESTINATION_PORT 6081
	19
aac35019 SS	20	static const char* const geneve_df_table[_NETDEV_GENEVE_DF_MAX] = {
	21	[NETDEV_GENEVE_DF_NO] = "no",
	22	[NETDEV_GENEVE_DF_YES] = "yes",
	23	[NETDEV_GENEVE_DF_INHERIT] = "inherit",
	24	};
	25
	26	DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(geneve_df, GeneveDF, NETDEV_GENEVE_DF_YES);
	27	DEFINE_CONFIG_PARSE_ENUM(config_parse_geneve_df, geneve_df, GeneveDF, "Failed to parse Geneve IPDoNotFragment= setting");
	28
6598e046	29	/* callback for geneve netdev's created without a backing Link */
302a796f	30	static int geneve_netdev_create_handler(sd_netlink rtnl, sd_netlink_message m, NetDev *netdev) {
6598e046 SS	31	int r;
6598e046 SS	32
1046bf9b	33	assert(netdev);
6598e046 SS	34	assert(netdev->state != _NETDEV_STATE_INVALID);
	35
	36	r = sd_netlink_message_get_errno(m);
	37	if (r == -EEXIST)
	38	log_netdev_info(netdev, "Geneve netdev exists, using existing without changing its parameters");
	39	else if (r < 0) {
	40	log_netdev_warning_errno(netdev, r, "Geneve netdev could not be created: %m");
	41	netdev_drop(netdev);
	42
	43	return 1;
	44	}
	45
	46	log_netdev_debug(netdev, "Geneve created");
	47
	48	return 1;
	49	}
	50
	51	static int netdev_geneve_create(NetDev *netdev) {
	52	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
	53	Geneve *v;
	54	int r;
	55
	56	assert(netdev);
	57
	58	v = GENEVE(netdev);
	59
	60	r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);
	61	if (r < 0)
	62	return log_netdev_error_errno(netdev, r, "Could not allocate RTM_NEWLINK message: %m");
	63
	64	r = sd_netlink_message_append_string(m, IFLA_IFNAME, netdev->ifname);
	65	if (r < 0)
	66	return log_netdev_error_errno(netdev, r, "Could not append IFLA_IFNAME, attribute: %m");
	67
	68	if (netdev->mac) {
	69	r = sd_netlink_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
	70	if (r < 0)
	71	return log_netdev_error_errno(netdev, r, "Could not append IFLA_ADDRESS attribute: %m");
	72	}
	73
4e964aa0	74	if (netdev->mtu != 0) {
6598e046 SS	75	r = sd_netlink_message_append_u32(m, IFLA_MTU, netdev->mtu);
	76	if (r < 0)
	77	return log_netdev_error_errno(netdev, r, "Could not append IFLA_MTU attribute: %m");
	78	}
	79
	80	r = sd_netlink_message_open_container(m, IFLA_LINKINFO);
	81	if (r < 0)
	82	return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
	83
	84	r = sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind));
	85	if (r < 0)
	86	return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
	87
	88	if (v->id <= GENEVE_VID_MAX) {
	89	r = sd_netlink_message_append_u32(m, IFLA_GENEVE_ID, v->id);
	90	if (r < 0)
	91	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_ID attribute: %m");
	92	}
	93
d40b01e4	94	if (in_addr_is_null(v->remote_family, &v->remote) == 0) {
6598e046 SS	95	if (v->remote_family == AF_INET)
	96	r = sd_netlink_message_append_in_addr(m, IFLA_GENEVE_REMOTE, &v->remote.in);
	97	else
	98	r = sd_netlink_message_append_in6_addr(m, IFLA_GENEVE_REMOTE6, &v->remote.in6);
6598e046	99	if (r < 0)
10490d90	100	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_REMOTE/IFLA_GENEVE_REMOTE6 attribute: %m");
6598e046 SS	101	}
6598e046 SS	102
d70c9bbd SS	103	if (v->inherit) {
	104	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TTL_INHERIT, 1);
	105	if (r < 0)
	106	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TTL_INHERIT attribute: %m");
	107	} else {
6598e046 SS	108	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TTL, v->ttl);
	109	if (r < 0)
	110	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TTL attribute: %m");
	111	}
	112
	113	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TOS, v->tos);
	114	if (r < 0)
	115	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TOS attribute: %m");
	116
	117	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_CSUM, v->udpcsum);
	118	if (r < 0)
	119	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_CSUM attribute: %m");
	120
	121	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_ZERO_CSUM6_TX, v->udp6zerocsumtx);
	122	if (r < 0)
	123	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_ZERO_CSUM6_TX attribute: %m");
	124
	125	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_ZERO_CSUM6_RX, v->udp6zerocsumrx);
	126	if (r < 0)
	127	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_ZERO_CSUM6_RX attribute: %m");
	128
	129	if (v->dest_port != DEFAULT_GENEVE_DESTINATION_PORT) {
	130	r = sd_netlink_message_append_u16(m, IFLA_GENEVE_PORT, htobe16(v->dest_port));
	131	if (r < 0)
	132	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_PORT attribute: %m");
	133	}
	134
	135	if (v->flow_label > 0) {
	136	r = sd_netlink_message_append_u32(m, IFLA_GENEVE_LABEL, htobe32(v->flow_label));
	137	if (r < 0)
	138	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_LABEL attribute: %m");
	139	}
	140
aac35019 SS	141	if (v->geneve_df != _NETDEV_GENEVE_DF_INVALID) {
	142	r = sd_netlink_message_append_u8(m, IFLA_GENEVE_DF, v->geneve_df);
	143	if (r < 0)
	144	return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_DF attribute: %m");
	145	}
	146
6598e046 SS	147	r = sd_netlink_message_close_container(m);
	148	if (r < 0)
	149	return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
	150
	151	r = sd_netlink_message_close_container(m);
	152	if (r < 0)
	153	return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
	154
302a796f YW	155	r = netlink_call_async(netdev->manager->rtnl, NULL, m, geneve_netdev_create_handler,
302a796f YW	156	netdev_destroy_callback, netdev);
6598e046 SS	157	if (r < 0)
	158	return log_netdev_error_errno(netdev, r, "Could not send rtnetlink message: %m");
	159
	160	netdev_ref(netdev);
6598e046 SS	161	netdev->state = NETDEV_STATE_CREATING;
	162
	163	log_netdev_debug(netdev, "Creating");
	164
6598e046 SS	165	return r;
	166	}
	167
	168	int config_parse_geneve_vni(const char *unit,
	169	const char *filename,
	170	unsigned line,
	171	const char *section,
	172	unsigned section_line,
	173	const char *lvalue,
	174	int ltype,
	175	const char *rvalue,
	176	void *data,
	177	void *userdata) {
	178	Geneve *v = userdata;
	179	uint32_t f;
	180	int r;
	181
	182	assert(filename);
	183	assert(lvalue);
	184	assert(rvalue);
	185	assert(data);
	186
	187	r = safe_atou32(rvalue, &f);
	188	if (r < 0) {
	189	log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Geneve VNI '%s'.", rvalue);
	190	return 0;
	191	}
	192
	193	if (f > GENEVE_VID_MAX){
	194	log_syntax(unit, LOG_ERR, filename, line, r, "Geneve VNI out is of range '%s'.", rvalue);
	195	return 0;
	196	}
	197
	198	v->id = f;
	199
	200	return 0;
	201	}
	202
6598e046 SS	203	int config_parse_geneve_address(const char *unit,
	204	const char *filename,
	205	unsigned line,
	206	const char *section,
	207	unsigned section_line,
	208	const char *lvalue,
	209	int ltype,
	210	const char *rvalue,
	211	void *data,
	212	void *userdata) {
	213	Geneve *v = userdata;
	214	union in_addr_union *addr = data, buffer;
	215	int r, f;
	216
	217	assert(filename);
	218	assert(lvalue);
	219	assert(rvalue);
	220	assert(data);
	221
	222	r = in_addr_from_string_auto(rvalue, &f, &buffer);
	223	if (r < 0) {
	224	log_syntax(unit, LOG_ERR, filename, line, r, "geneve '%s' address is invalid, ignoring assignment: %s", lvalue, rvalue);
	225	return 0;
	226	}
	227
	228	r = in_addr_is_multicast(f, &buffer);
	229	if (r > 0) {
	230	log_syntax(unit, LOG_ERR, filename, line, 0, "geneve invalid multicast '%s' address, ignoring assignment: %s", lvalue, rvalue);
	231	return 0;
	232	}
	233
	234	v->remote_family = f;
	235	*addr = buffer;
	236
	237	return 0;
	238	}
	239
6598e046 SS	240	int config_parse_geneve_flow_label(const char *unit,
	241	const char *filename,
	242	unsigned line,
	243	const char *section,
	244	unsigned section_line,
	245	const char *lvalue,
	246	int ltype,
	247	const char *rvalue,
	248	void *data,
	249	void *userdata) {
	250	Geneve *v = userdata;
	251	uint32_t f;
	252	int r;
	253
	254	assert(filename);
	255	assert(lvalue);
	256	assert(rvalue);
	257	assert(data);
	258
	259	r = safe_atou32(rvalue, &f);
	260	if (r < 0) {
	261	log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Geneve flow label '%s'.", rvalue);
	262	return 0;
	263	}
	264
	265	if (f & ~GENEVE_FLOW_LABEL_MAX_MASK) {
	266	log_syntax(unit, LOG_ERR, filename, line, r,
	267	"Geneve flow label '%s' not valid. Flow label range should be [0-1048575].", rvalue);
	268	return 0;
	269	}
	270
	271	v->flow_label = f;
	272
	273	return 0;
	274	}
	275
d70c9bbd SS	276	int config_parse_geneve_ttl(const char *unit,
	277	const char *filename,
	278	unsigned line,
	279	const char *section,
	280	unsigned section_line,
	281	const char *lvalue,
	282	int ltype,
	283	const char *rvalue,
	284	void *data,
	285	void *userdata) {
	286	Geneve *v = userdata;
	287	unsigned f;
	288	int r;
	289
	290	assert(filename);
	291	assert(lvalue);
	292	assert(rvalue);
	293	assert(data);
	294
	295	if (streq(rvalue, "inherit"))
	296	v->inherit = true;
	297	else {
	298	r = safe_atou(rvalue, &f);
	299	if (r < 0) {
	300	log_syntax(unit, LOG_ERR, filename, line, r,
	301	"Failed to parse Geneve TTL '%s', ignoring assignment: %m", rvalue);
	302	return 0;
	303	}
	304
	305	if (f > 255) {
	306	log_syntax(unit, LOG_ERR, filename, line, 0,
	307	"Invalid Geneve TTL '%s'. TTL must be <= 255. Ignoring assignment.", rvalue);
	308	return 0;
	309	}
	310
	311	v->ttl = f;
	312	}
	313
	314	return 0;
	315	}
	316
3ded5bbf SS	317	static int netdev_geneve_verify(NetDev netdev, const char filename) {
	318	Geneve *v = GENEVE(netdev);
	319
	320	assert(netdev);
	321	assert(v);
	322	assert(filename);
	323
328184d1 SS	324	if (v->id > GENEVE_VID_MAX)
	325	return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),
	326	"%s: Geneve without valid VNI (or Virtual Network Identifier) configured. Ignoring.",
	327	filename);
3ded5bbf SS	328
	329	return 0;
	330	}
	331
6598e046 SS	332	static void geneve_init(NetDev *netdev) {
	333	Geneve *v;
	334
	335	assert(netdev);
	336
	337	v = GENEVE(netdev);
	338
	339	assert(v);
	340
	341	v->id = GENEVE_VID_MAX + 1;
aac35019	342	v->geneve_df = _NETDEV_GENEVE_DF_INVALID;
6598e046 SS	343	v->dest_port = DEFAULT_GENEVE_DESTINATION_PORT;
	344	v->udpcsum = false;
	345	v->udp6zerocsumtx = false;
	346	v->udp6zerocsumrx = false;
	347	}
	348
	349	const NetDevVTable geneve_vtable = {
	350	.object_size = sizeof(Geneve),
	351	.init = geneve_init,
	352	.sections = "Match\0NetDev\0GENEVE\0",
	353	.create = netdev_geneve_create,
	354	.create_type = NETDEV_CREATE_INDEPENDENT,
3ded5bbf	355	.config_verify = netdev_geneve_verify,
daf0f8ca	356	.generate_mac = true,
6598e046	357	};