305 lines
11 KiB
C
305 lines
11 KiB
C
/***
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This file is part of systemd.
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Copyright 2014 Susant Sahani
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <net/if.h>
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#include "sd-netlink.h"
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#include "conf-parser.h"
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#include "alloc-util.h"
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#include "extract-word.h"
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#include "parse-util.h"
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#include "missing.h"
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#include "networkd-link.h"
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#include "netdev/vxlan.h"
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static int netdev_vxlan_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
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VxLan *v;
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int r;
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assert(netdev);
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assert(link);
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assert(m);
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v = VXLAN(netdev);
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assert(v);
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if (v->id <= VXLAN_VID_MAX) {
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r = sd_netlink_message_append_u32(m, IFLA_VXLAN_ID, v->id);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_ID attribute: %m");
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}
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r = sd_netlink_message_append_in_addr(m, IFLA_VXLAN_GROUP, &v->group.in);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_GROUP attribute: %m");
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r = sd_netlink_message_append_u32(m, IFLA_VXLAN_LINK, link->ifindex);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_LINK attribute: %m");
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if (v->ttl) {
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r = sd_netlink_message_append_u8(m, IFLA_VXLAN_TTL, v->ttl);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_TTL attribute: %m");
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}
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if (v->tos) {
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r = sd_netlink_message_append_u8(m, IFLA_VXLAN_TOS, v->tos);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_TOS attribute: %m");
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}
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r = sd_netlink_message_append_u8(m, IFLA_VXLAN_LEARNING, v->learning);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_LEARNING attribute: %m");
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r = sd_netlink_message_append_u8(m, IFLA_VXLAN_RSC, v->route_short_circuit);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_RSC attribute: %m");
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r = sd_netlink_message_append_u8(m, IFLA_VXLAN_PROXY, v->arp_proxy);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_PROXY attribute: %m");
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r = sd_netlink_message_append_u8(m, IFLA_VXLAN_L2MISS, v->l2miss);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_L2MISS attribute: %m");
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r = sd_netlink_message_append_u8(m, IFLA_VXLAN_L3MISS, v->l3miss);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_L3MISS attribute: %m");
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if (v->fdb_ageing) {
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r = sd_netlink_message_append_u32(m, IFLA_VXLAN_AGEING, v->fdb_ageing / USEC_PER_SEC);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_AGEING attribute: %m");
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}
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if (v->max_fdb) {
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r = sd_netlink_message_append_u32(m, IFLA_VXLAN_LIMIT, v->max_fdb);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_LIMIT attribute: %m");
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}
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r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_CSUM, v->udpcsum);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_UDP_CSUM attribute: %m");
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r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, v->udp6zerocsumtx);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_UDP_ZERO_CSUM6_TX attribute: %m");
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r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, v->udp6zerocsumrx);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_UDP_ZERO_CSUM6_RX attribute: %m");
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r = sd_netlink_message_append_u8(m, IFLA_VXLAN_REMCSUM_TX, v->remote_csum_tx);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_REMCSUM_TX attribute: %m");
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r = sd_netlink_message_append_u8(m, IFLA_VXLAN_REMCSUM_RX, v->remote_csum_rx);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_REMCSUM_RX attribute: %m");
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r = sd_netlink_message_append_u16(m, IFLA_VXLAN_PORT, htobe16(v->dest_port));
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_PORT attribute: %m");
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if (v->port_range.low || v->port_range.high) {
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struct ifla_vxlan_port_range port_range;
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port_range.low = htobe16(v->port_range.low);
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port_range.high = htobe16(v->port_range.high);
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r = sd_netlink_message_append_data(m, IFLA_VXLAN_PORT_RANGE, &port_range, sizeof(port_range));
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_PORT_RANGE attribute: %m");
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}
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if (v->group_policy) {
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r = sd_netlink_message_append_flag(m, IFLA_VXLAN_GBP);
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if (r < 0)
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return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_GBP attribute: %m");
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}
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return r;
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}
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int config_parse_vxlan_group_address(const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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VxLan *v = userdata;
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union in_addr_union *addr = data, buffer;
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int r, f;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = in_addr_from_string_auto(rvalue, &f, &buffer);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "vxlan multicast group address is invalid, ignoring assignment: %s", rvalue);
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return 0;
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}
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if (v->family != AF_UNSPEC && v->family != f) {
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log_syntax(unit, LOG_ERR, filename, line, 0, "vxlan multicast group incompatible, ignoring assignment: %s", rvalue);
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return 0;
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}
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v->family = f;
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*addr = buffer;
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return 0;
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}
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int config_parse_port_range(const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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_cleanup_free_ char *word = NULL;
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VxLan *v = userdata;
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unsigned low, high;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = extract_first_word(&rvalue, &word, NULL, 0);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract VXLAN port range, ignoring: %s", rvalue);
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return 0;
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}
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if (r == 0)
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return 0;
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r = parse_range(word, &low, &high);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse VXLAN port range '%s'", word);
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return 0;
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}
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if (low <= 0 || low > 65535 || high <= 0 || high > 65535) {
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log_syntax(unit, LOG_ERR, filename, line, r,
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"Failed to parse VXLAN port range '%s'. Port should be greater than 0 and less than 65535.", word);
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return 0;
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}
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if (high < low) {
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log_syntax(unit, LOG_ERR, filename, line, r,
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"Failed to parse VXLAN port range '%s'. Port range %u .. %u not valid", word, low, high);
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return 0;
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}
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v->port_range.low = low;
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v->port_range.high = high;
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return 0;
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}
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int config_parse_destination_port(const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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VxLan *v = userdata;
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uint16_t port;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = parse_ip_port(rvalue, &port);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse VXLAN destination port '%s'.", rvalue);
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return 0;
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}
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v->dest_port = port;
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return 0;
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}
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static int netdev_vxlan_verify(NetDev *netdev, const char *filename) {
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VxLan *v = VXLAN(netdev);
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assert(netdev);
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assert(v);
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assert(filename);
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if (v->id > VXLAN_VID_MAX) {
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log_warning("VXLAN without valid Id configured in %s. Ignoring", filename);
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return -EINVAL;
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}
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return 0;
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}
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static void vxlan_init(NetDev *netdev) {
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VxLan *v;
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assert(netdev);
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v = VXLAN(netdev);
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assert(v);
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v->id = VXLAN_VID_MAX + 1;
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v->learning = true;
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v->udpcsum = false;
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v->udp6zerocsumtx = false;
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v->udp6zerocsumrx = false;
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}
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const NetDevVTable vxlan_vtable = {
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.object_size = sizeof(VxLan),
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.init = vxlan_init,
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.sections = "Match\0NetDev\0VXLAN\0",
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.fill_message_create = netdev_vxlan_fill_message_create,
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.create_type = NETDEV_CREATE_STACKED,
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.config_verify = netdev_vxlan_verify,
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};
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