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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/* Make sure the net/if.h header is included before any linux/ one */
#include <net/if.h>
#include <netinet/in.h>
#include <linux/if_arp.h>
#include "conf-parser.h"
#include "macvlan.h"
#include "macvlan-util.h"
#include "networkd-network.h"
#include "parse-util.h"
typedef enum BCQueueThreshold {
BC_QUEUE_THRESHOLD_UNDEF = INT32_MIN,
BC_QUEUE_THRESHOLD_DISABLE = -1,
} BCQueueThreshold;
DEFINE_CONFIG_PARSE_ENUM(config_parse_macvlan_mode, macvlan_mode, MacVlanMode);
static int netdev_macvlan_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *req) {
assert(netdev);
assert(netdev->ifname);
assert(link);
assert(link->network);
MacVlan *m = netdev->kind == NETDEV_KIND_MACVLAN ? MACVLAN(netdev) : MACVTAP(netdev);
int r;
if (m->mode == NETDEV_MACVLAN_MODE_SOURCE && !set_isempty(m->match_source_mac)) {
const struct ether_addr *mac_addr;
r = sd_netlink_message_append_u32(req, IFLA_MACVLAN_MACADDR_MODE, MACVLAN_MACADDR_SET);
if (r < 0)
return r;
r = sd_netlink_message_open_container(req, IFLA_MACVLAN_MACADDR_DATA);
if (r < 0)
return r;
SET_FOREACH(mac_addr, m->match_source_mac) {
r = sd_netlink_message_append_ether_addr(req, IFLA_MACVLAN_MACADDR, mac_addr);
if (r < 0)
return r;
}
r = sd_netlink_message_close_container(req);
if (r < 0)
return r;
}
if (m->mode != _NETDEV_MACVLAN_MODE_INVALID) {
r = sd_netlink_message_append_u32(req, IFLA_MACVLAN_MODE, m->mode);
if (r < 0)
return r;
}
/* set the nopromisc flag if Promiscuous= of the link is explicitly set to false */
if (m->mode == NETDEV_MACVLAN_MODE_PASSTHRU && link->network->promiscuous == 0) {
r = sd_netlink_message_append_u16(req, IFLA_MACVLAN_FLAGS, MACVLAN_FLAG_NOPROMISC);
if (r < 0)
return r;
}
if (m->bc_queue_length != UINT32_MAX) {
r = sd_netlink_message_append_u32(req, IFLA_MACVLAN_BC_QUEUE_LEN, m->bc_queue_length);
if (r < 0)
return r;
}
if (m->bc_queue_threshold != BC_QUEUE_THRESHOLD_UNDEF) {
r = sd_netlink_message_append_s32(req, IFLA_MACVLAN_BC_CUTOFF, m->bc_queue_threshold);
if (r < 0)
return r;
}
return 0;
}
int config_parse_macvlan_broadcast_queue_size(
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) {
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
MacVlan *m = ASSERT_PTR(userdata);
if (isempty(rvalue)) {
m->bc_queue_length = UINT32_MAX;
return 0;
}
return config_parse_uint32_bounded(
unit, filename, line, section, section_line, lvalue, rvalue,
0, UINT32_MAX - 1, true,
&m->bc_queue_length);
}
int config_parse_macvlan_broadcast_queue_threshold(
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) {
assert(filename);
assert(lvalue);
assert(rvalue);
int32_t v, *threshold = ASSERT_PTR(data);
int r;
if (isempty(rvalue)) {
*threshold = BC_QUEUE_THRESHOLD_UNDEF;
return 0;
}
if (streq(rvalue, "no")) {
*threshold = BC_QUEUE_THRESHOLD_DISABLE;
return 0;
}
r = safe_atoi32(rvalue, &v);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse %s=, ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
if (v < 0) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid %s= value specified, ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
*threshold = v;
return 0;
}
static void macvlan_done(NetDev *netdev) {
MacVlan *m = ASSERT_PTR(netdev)->kind == NETDEV_KIND_MACVLAN ? MACVLAN(netdev) : MACVTAP(netdev);
set_free(m->match_source_mac);
}
static void macvlan_init(NetDev *netdev) {
MacVlan *m = ASSERT_PTR(netdev)->kind == NETDEV_KIND_MACVLAN ? MACVLAN(netdev) : MACVTAP(netdev);
m->mode = _NETDEV_MACVLAN_MODE_INVALID;
m->bc_queue_length = UINT32_MAX;
m->bc_queue_threshold = BC_QUEUE_THRESHOLD_UNDEF;
}
const NetDevVTable macvtap_vtable = {
.object_size = sizeof(MacVlan),
.init = macvlan_init,
.done = macvlan_done,
.sections = NETDEV_COMMON_SECTIONS "MACVTAP\0",
.fill_message_create = netdev_macvlan_fill_message_create,
.create_type = NETDEV_CREATE_STACKED,
.iftype = ARPHRD_ETHER,
.generate_mac = true,
};
const NetDevVTable macvlan_vtable = {
.object_size = sizeof(MacVlan),
.init = macvlan_init,
.done = macvlan_done,
.sections = NETDEV_COMMON_SECTIONS "MACVLAN\0",
.fill_message_create = netdev_macvlan_fill_message_create,
.create_type = NETDEV_CREATE_STACKED,
.iftype = ARPHRD_ETHER,
.generate_mac = true,
};
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