src/network/networkd-netdev-vxlan.c - systemd-stable - Rivoreo Source Code Repositories

 /***
     This file is part of systemd.

     Copyright 2014 Susant Sahani

     systemd is free software; you can redistribute it and/or modify it
     under the terms of the GNU Lesser General Public License as published by
     the Free Software Foundation; either version 2.1 of the License, or
     (at your option) any later version.

     systemd is distributed in the hope that it will be useful, but
     WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
     Lesser General Public License for more details.

     You should have received a copy of the GNU Lesser General Public License
     along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/

 #include <net/if.h>

 #include "sd-netlink.h"

 #include "conf-parser.h"
 #include "alloc-util.h"
 #include "extract-word.h"
 #include "parse-util.h"
 #include "missing.h"

 #include "networkd-link.h"
 #include "networkd-netdev-vxlan.h"

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

         assert(netdev);
         assert(link);
         assert(m);

         v = VXLAN(netdev);

         assert(v);

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

         r = sd_netlink_message_append_in_addr(m, IFLA_VXLAN_GROUP, &v->group.in);
         if (r < 0)
                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_GROUP attribute: %m");

         r = sd_netlink_message_append_u32(m, IFLA_VXLAN_LINK, link->ifindex);
         if (r < 0)
                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_LINK attribute: %m");

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

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

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

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

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

         r = sd_netlink_message_append_u8(m, IFLA_VXLAN_L2MISS, v->l2miss);
         if (r < 0)
                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_L2MISS attribute: %m");

         r = sd_netlink_message_append_u8(m, IFLA_VXLAN_L3MISS, v->l3miss);
         if (r < 0)
                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_L3MISS attribute: %m");

         if (v->fdb_ageing) {
                 r = sd_netlink_message_append_u32(m, IFLA_VXLAN_AGEING, v->fdb_ageing / USEC_PER_SEC);
                 if (r < 0)
                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_AGEING attribute: %m");
         }

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

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

         r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, v->udp6zerocsumtx);
         if (r < 0)
                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_UDP_ZERO_CSUM6_TX attribute: %m");

         r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, v->udp6zerocsumrx);
         if (r < 0)
                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_UDP_ZERO_CSUM6_RX attribute: %m");

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

         if (v->port_range.low || v->port_range.high) {
                 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 log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_PORT_RANGE attribute: %m");
         }

         if (v->group_policy) {
                 r = sd_netlink_message_append_flag(m, IFLA_VXLAN_GBP);
                 if (r < 0)
                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_GBP attribute: %m");
         }

         return r;
 }

 int config_parse_vxlan_group_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 = 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, "vxlan multicast group address is invalid, ignoring assignment: %s", rvalue);
                 return 0;
         }

         if (v->family != AF_UNSPEC && v->family != f) {
                 log_syntax(unit, LOG_ERR, filename, line, 0, "vxlan multicast group incompatible, ignoring assignment: %s", rvalue);
                 return 0;
         }

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

         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) {
         _cleanup_free_ char *word = NULL;
         VxLan *v = userdata;
         unsigned low, high;
         int r;

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

         r = extract_first_word(&rvalue, &word, NULL, 0);
         if (r < 0) {
                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract VXLAN port range, ignoring: %s", rvalue);
                 return 0;
         }

         if (r == 0)
                 return 0;

         r = parse_range(word, &low, &high);
         if (r < 0) {
                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse VXLAN port range '%s'", word);
                 return 0;
         }

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

         if (high < low) {
                 log_syntax(unit, LOG_ERR, filename, line, r,
                            "Failed to parse VXLAN port range '%s'. Port range %u .. %u not valid", word, low, high);
                 return 0;
         }

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

         return 0;
 }

 int config_parse_destination_port(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 port;
         int r;

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

         r = safe_atou16(rvalue, &port);
         if (r < 0 || port <= 0) {
                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse VXLAN destination port '%s'.", rvalue);
                 return 0;
         }

         v->dest_port = port;

         return 0;
 }

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

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

         if (v->id > VXLAN_VID_MAX) {
                 log_warning("VXLAN without valid Id configured in %s. Ignoring", filename);
                 return -EINVAL;
         }

         return 0;
 }

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

         assert(netdev);

         v = VXLAN(netdev);

         assert(v);

         v->id = VXLAN_VID_MAX + 1;
         v->learning = true;
         v->udpcsum = false;
         v->udp6zerocsumtx = false;
         v->udp6zerocsumrx = false;
 }

 const NetDevVTable vxlan_vtable = {
         .object_size = sizeof(VxLan),
         .init = vxlan_init,
         .sections = "Match\0NetDev\0VXLAN\0",
         .fill_message_create = netdev_vxlan_fill_message_create,
         .create_type = NETDEV_CREATE_STACKED,
         .config_verify = netdev_vxlan_verify,
 };
	/***
	This file is part of systemd.

	Copyright 2014 Susant Sahani

	systemd is free software; you can redistribute it and/or modify it
	under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation; either version 2.1 of the License, or
	(at your option) any later version.

	systemd is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with systemd; If not, see <http://www.gnu.org/licenses/>.
	***/

	#include <net/if.h>

	#include "sd-netlink.h"

	#include "conf-parser.h"
	#include "alloc-util.h"
	#include "extract-word.h"
	#include "parse-util.h"
	#include "missing.h"

	#include "networkd-link.h"
	#include "networkd-netdev-vxlan.h"

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

	assert(netdev);
	assert(link);
	assert(m);

	v = VXLAN(netdev);

	assert(v);

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

	r = sd_netlink_message_append_in_addr(m, IFLA_VXLAN_GROUP, &v->group.in);
	if (r < 0)
	return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_GROUP attribute: %m");

	r = sd_netlink_message_append_u32(m, IFLA_VXLAN_LINK, link->ifindex);
	if (r < 0)
	return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_LINK attribute: %m");

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

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

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

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

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

	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_L2MISS, v->l2miss);
	if (r < 0)
	return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_L2MISS attribute: %m");

	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_L3MISS, v->l3miss);
	if (r < 0)
	return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_L3MISS attribute: %m");

	if (v->fdb_ageing) {
	r = sd_netlink_message_append_u32(m, IFLA_VXLAN_AGEING, v->fdb_ageing / USEC_PER_SEC);
	if (r < 0)
	return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_AGEING attribute: %m");
	}

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

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

	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, v->udp6zerocsumtx);
	if (r < 0)
	return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_UDP_ZERO_CSUM6_TX attribute: %m");

	r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, v->udp6zerocsumrx);
	if (r < 0)
	return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_UDP_ZERO_CSUM6_RX attribute: %m");

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

	if (v->port_range.low \|\| v->port_range.high) {
	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 log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_PORT_RANGE attribute: %m");
	}

	if (v->group_policy) {
	r = sd_netlink_message_append_flag(m, IFLA_VXLAN_GBP);
	if (r < 0)
	return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_GBP attribute: %m");
	}

	return r;
	}

	int config_parse_vxlan_group_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 = 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, "vxlan multicast group address is invalid, ignoring assignment: %s", rvalue);
	return 0;
	}

	if (v->family != AF_UNSPEC && v->family != f) {
	log_syntax(unit, LOG_ERR, filename, line, 0, "vxlan multicast group incompatible, ignoring assignment: %s", rvalue);
	return 0;
	}

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

	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) {
	_cleanup_free_ char *word = NULL;
	VxLan *v = userdata;
	unsigned low, high;
	int r;

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

	r = extract_first_word(&rvalue, &word, NULL, 0);
	if (r < 0) {
	log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract VXLAN port range, ignoring: %s", rvalue);
	return 0;
	}

	if (r == 0)
	return 0;

	r = parse_range(word, &low, &high);
	if (r < 0) {
	log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse VXLAN port range '%s'", word);
	return 0;
	}

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

	if (high < low) {
	log_syntax(unit, LOG_ERR, filename, line, r,
	"Failed to parse VXLAN port range '%s'. Port range %u .. %u not valid", word, low, high);
	return 0;
	}

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

	return 0;
	}

	int config_parse_destination_port(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 port;
	int r;

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

	r = safe_atou16(rvalue, &port);
	if (r < 0 \|\| port <= 0) {
	log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse VXLAN destination port '%s'.", rvalue);
	return 0;
	}

	v->dest_port = port;

	return 0;
	}

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

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

	if (v->id > VXLAN_VID_MAX) {
	log_warning("VXLAN without valid Id configured in %s. Ignoring", filename);
	return -EINVAL;
	}

	return 0;
	}

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

	assert(netdev);

	v = VXLAN(netdev);

	assert(v);

	v->id = VXLAN_VID_MAX + 1;
	v->learning = true;
	v->udpcsum = false;
	v->udp6zerocsumtx = false;
	v->udp6zerocsumrx = false;
	}

	const NetDevVTable vxlan_vtable = {
	.object_size = sizeof(VxLan),
	.init = vxlan_init,
	.sections = "Match\0NetDev\0VXLAN\0",
	.fill_message_create = netdev_vxlan_fill_message_create,
	.create_type = NETDEV_CREATE_STACKED,
	.config_verify = netdev_vxlan_verify,
	};