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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <errno.h>
#include <net/if.h>
#include <linux/if_arp.h>
#include <linux/if_vlan.h>
#include "parse-util.h"
#include "vlan-util.h"
#include "vlan.h"
static int netdev_vlan_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *req) {
assert(link);
assert(req);
struct ifla_vlan_flags flags = {};
VLan *v = VLAN(netdev);
int r;
r = sd_netlink_message_append_u16(req, IFLA_VLAN_ID, v->id);
if (r < 0)
return r;
if (v->protocol >= 0) {
r = sd_netlink_message_append_u16(req, IFLA_VLAN_PROTOCOL, htobe16(v->protocol));
if (r < 0)
return r;
}
if (v->gvrp != -1) {
flags.mask |= VLAN_FLAG_GVRP;
SET_FLAG(flags.flags, VLAN_FLAG_GVRP, v->gvrp);
}
if (v->mvrp != -1) {
flags.mask |= VLAN_FLAG_MVRP;
SET_FLAG(flags.flags, VLAN_FLAG_MVRP, v->mvrp);
}
if (v->reorder_hdr != -1) {
flags.mask |= VLAN_FLAG_REORDER_HDR;
SET_FLAG(flags.flags, VLAN_FLAG_REORDER_HDR, v->reorder_hdr);
}
if (v->loose_binding != -1) {
flags.mask |= VLAN_FLAG_LOOSE_BINDING;
SET_FLAG(flags.flags, VLAN_FLAG_LOOSE_BINDING, v->loose_binding);
}
r = sd_netlink_message_append_data(req, IFLA_VLAN_FLAGS, &flags, sizeof(struct ifla_vlan_flags));
if (r < 0)
return r;
if (!set_isempty(v->egress_qos_maps)) {
struct ifla_vlan_qos_mapping *m;
r = sd_netlink_message_open_container(req, IFLA_VLAN_EGRESS_QOS);
if (r < 0)
return r;
SET_FOREACH(m, v->egress_qos_maps) {
r = sd_netlink_message_append_data(req, IFLA_VLAN_QOS_MAPPING, m, sizeof(struct ifla_vlan_qos_mapping));
if (r < 0)
return r;
}
r = sd_netlink_message_close_container(req);
if (r < 0)
return r;
}
if (!set_isempty(v->ingress_qos_maps)) {
struct ifla_vlan_qos_mapping *m;
r = sd_netlink_message_open_container(req, IFLA_VLAN_INGRESS_QOS);
if (r < 0)
return r;
SET_FOREACH(m, v->ingress_qos_maps) {
r = sd_netlink_message_append_data(req, IFLA_VLAN_QOS_MAPPING, m, sizeof(struct ifla_vlan_qos_mapping));
if (r < 0)
return r;
}
r = sd_netlink_message_close_container(req);
if (r < 0)
return r;
}
return 0;
}
static void vlan_qos_maps_hash_func(const struct ifla_vlan_qos_mapping *x, struct siphash *state) {
siphash24_compress(&x->from, sizeof(x->from), state);
siphash24_compress(&x->to, sizeof(x->to), state);
}
static int vlan_qos_maps_compare_func(const struct ifla_vlan_qos_mapping *a, const struct ifla_vlan_qos_mapping *b) {
int r;
r = CMP(a->from, b->from);
if (r != 0)
return r;
return CMP(a->to, b->to);
}
DEFINE_PRIVATE_HASH_OPS_WITH_KEY_DESTRUCTOR(
vlan_qos_maps_hash_ops,
struct ifla_vlan_qos_mapping,
vlan_qos_maps_hash_func,
vlan_qos_maps_compare_func,
free);
int config_parse_vlan_qos_maps(
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) {
Set **s = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
*s = set_free(*s);
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ struct ifla_vlan_qos_mapping *m = NULL;
_cleanup_free_ char *w = NULL;
unsigned from, to;
r = extract_first_word(&p, &w, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s, ignoring: %s", lvalue, rvalue);
return 0;
}
if (r == 0)
return 0;
r = parse_range(w, &from, &to);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s, ignoring: %s", lvalue, w);
continue;
}
m = new(struct ifla_vlan_qos_mapping, 1);
if (!m)
return log_oom();
*m = (struct ifla_vlan_qos_mapping) {
.from = from,
.to = to,
};
r = set_ensure_consume(s, &vlan_qos_maps_hash_ops, TAKE_PTR(m));
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to store %s, ignoring: %s", lvalue, w);
continue;
}
}
}
static int netdev_vlan_verify(NetDev *netdev, const char *filename) {
assert(filename);
VLan *v = VLAN(netdev);
if (v->id == VLANID_INVALID) {
log_netdev_warning(netdev, "VLAN without valid Id (%"PRIu16") configured in %s.", v->id, filename);
return -EINVAL;
}
return 0;
}
static void vlan_done(NetDev *netdev) {
VLan *v = VLAN(netdev);
set_free(v->egress_qos_maps);
set_free(v->ingress_qos_maps);
}
static void vlan_init(NetDev *netdev) {
VLan *v = VLAN(netdev);
v->id = VLANID_INVALID;
v->protocol = -1;
v->gvrp = -1;
v->mvrp = -1;
v->loose_binding = -1;
v->reorder_hdr = -1;
}
const NetDevVTable vlan_vtable = {
.object_size = sizeof(VLan),
.init = vlan_init,
.sections = NETDEV_COMMON_SECTIONS "VLAN\0",
.fill_message_create = netdev_vlan_fill_message_create,
.create_type = NETDEV_CREATE_STACKED,
.config_verify = netdev_vlan_verify,
.done = vlan_done,
.iftype = ARPHRD_ETHER,
};
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