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network: store full hardware address in Link struct

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This passes the legacy ethernet address to functions in a lot of places,
which all will need migrated to handle arbitrary size hardware addresses
eventually.
This commit is contained in:
Timo Rothenpieler 2020-10-26 18:07:49 +01:00
parent 4fc8a29a7e
commit b8162cd200
10 changed files with 51 additions and 42 deletions
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25
src/network/networkd-address.c
View File

@ -1,6 +1,7 @@
/* SPDX-License-Identifier: LGPL-2.1+ */
#include <net/if.h>
#include <net/if_arp.h>
#include "alloc-util.h"
#include "firewall-util.h"
@ -21,16 +22,24 @@ int generate_ipv6_eui_64_address(const Link *link, struct in6_addr *ret) {
assert(link);
assert(ret);
if (link->iftype == ARPHRD_INFINIBAND) {
/* see RFC4391 section 8 */
memcpy(&ret->s6_addr[8], &link->hw_addr.addr.infiniband[12], 8);
ret->s6_addr[8] ^= 1 << 1;
return 0;
}
/* see RFC4291 section 2.5.1 */
ret->s6_addr[8] = link->mac.ether_addr_octet[0];
ret->s6_addr[8] = link->hw_addr.addr.ether.ether_addr_octet[0];
ret->s6_addr[8] ^= 1 << 1;
ret->s6_addr[9] = link->mac.ether_addr_octet[1];
ret->s6_addr[10] = link->mac.ether_addr_octet[2];
ret->s6_addr[9] = link->hw_addr.addr.ether.ether_addr_octet[1];
ret->s6_addr[10] = link->hw_addr.addr.ether.ether_addr_octet[2];
ret->s6_addr[11] = 0xff;
ret->s6_addr[12] = 0xfe;
ret->s6_addr[13] = link->mac.ether_addr_octet[3];
ret->s6_addr[14] = link->mac.ether_addr_octet[4];
ret->s6_addr[15] = link->mac.ether_addr_octet[5];
ret->s6_addr[13] = link->hw_addr.addr.ether.ether_addr_octet[3];
ret->s6_addr[14] = link->hw_addr.addr.ether.ether_addr_octet[4];
ret->s6_addr[15] = link->hw_addr.addr.ether.ether_addr_octet[5];
return 0;
}
@ -1373,7 +1382,7 @@ static int ipv4_dad_configure(Address *address) {
if (r < 0)
return r;
r = sd_ipv4acd_set_mac(address->acd, &address->link->mac);
r = sd_ipv4acd_set_mac(address->acd, &address->link->hw_addr.addr.ether);
if (r < 0)
return r;
@ -1403,7 +1412,7 @@ static int ipv4_dad_update_mac_one(Address *address) {
if (r < 0)
return r;
r = sd_ipv4acd_set_mac(address->acd, &address->link->mac);
r = sd_ipv4acd_set_mac(address->acd, &address->link->hw_addr.addr.ether);
if (r < 0)
return r;

14
src/network/networkd-dhcp4.c
View File

@ -650,7 +650,7 @@ static int dhcp4_configure_dad(Link *link) {
if (r < 0)
return r;
r = sd_ipv4acd_set_mac(link->dhcp_acd, &link->mac);
r = sd_ipv4acd_set_mac(link->dhcp_acd, &link->hw_addr.addr.ether);
if (r < 0)
return r;
@ -672,7 +672,7 @@ static int dhcp4_dad_update_mac(Link *link) {
if (r < 0)
return r;
r = sd_ipv4acd_set_mac(link->dhcp_acd, &link->mac);
r = sd_ipv4acd_set_mac(link->dhcp_acd, &link->hw_addr.addr.ether);
if (r < 0)
return r;
@ -1274,8 +1274,8 @@ static int dhcp4_set_client_identifier(Link *link) {
case DHCP_CLIENT_ID_MAC:
r = sd_dhcp_client_set_client_id(link->dhcp_client,
ARPHRD_ETHER,
(const uint8_t *) &link->mac,
sizeof(link->mac));
link->hw_addr.addr.bytes,
link->hw_addr.length);
if (r < 0)
return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set client ID: %m");
break;
@ -1325,8 +1325,8 @@ int dhcp4_configure(Link *link) {
return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to initialize DHCP4 client: %m");
r = sd_dhcp_client_set_mac(link->dhcp_client,
(const uint8_t *) &link->mac,
sizeof (link->mac), ARPHRD_ETHER);
link->hw_addr.addr.bytes,
link->hw_addr.length, ARPHRD_ETHER);
if (r < 0)
return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set MAC address: %m");
@ -1484,7 +1484,7 @@ int dhcp4_update_mac(Link *link) {
if (!link->dhcp_client)
return 0;
r = sd_dhcp_client_set_mac(link->dhcp_client, (const uint8_t *) &link->mac, sizeof (link->mac), ARPHRD_ETHER);
r = sd_dhcp_client_set_mac(link->dhcp_client, link->hw_addr.addr.bytes, link->hw_addr.length, ARPHRD_ETHER);
if (r < 0)
return r;

2
src/network/networkd-dhcp6.c
View File

@ -1357,7 +1357,7 @@ static int dhcp6_set_identifier(Link *link, sd_dhcp6_client *client) {
assert(link->network);
assert(client);
r = sd_dhcp6_client_set_mac(client, (const uint8_t *) &link->mac, sizeof (link->mac), ARPHRD_ETHER);
r = sd_dhcp6_client_set_mac(client, link->hw_addr.addr.bytes, link->hw_addr.length, ARPHRD_ETHER);
if (r < 0)
return r;

4
src/network/networkd-ipv4ll.c
View File

@ -181,7 +181,7 @@ int ipv4ll_configure(Link *link) {
return r;
}
r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac);
r = sd_ipv4ll_set_mac(link->ipv4ll, &link->hw_addr.addr.ether);
if (r < 0)
return r;
@ -211,7 +211,7 @@ int ipv4ll_update_mac(Link *link) {
if (r < 0)
return r;
r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac);
r = sd_ipv4ll_set_mac(link->ipv4ll, &link->hw_addr.addr.ether);
if (r < 0)
return r;

28
src/network/networkd-link.c
View File

@ -421,9 +421,9 @@ static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) {
if (r < 0)
log_link_debug_errno(link, r, "New device has no master, continuing without");
r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac);
r = netlink_message_read_hw_addr(message, IFLA_ADDRESS, &link->hw_addr);
if (r < 0)
log_link_debug_errno(link, r, "MAC address not found for new device, continuing without");
log_link_debug_errno(link, r, "Hardware address not found for new device, continuing without");
r = ethtool_get_permanent_macaddr(&manager->ethtool_fd, link->ifname, &link->permanent_mac);
if (r < 0)
@ -2167,7 +2167,7 @@ static int link_reconfigure_internal(Link *link, sd_netlink_message *m, bool for
r = network_get(link->manager, link->iftype, link->sd_device,
link->ifname, link->alternative_names, link->driver,
&link->mac, &link->permanent_mac,
&link->hw_addr.addr.ether, &link->permanent_mac,
link->wlan_iftype, link->ssid, &link->bssid, &network);
if (r == -ENOENT) {
link_enter_unmanaged(link);
@ -2302,7 +2302,7 @@ static int link_initialized_and_synced(Link *link) {
r = network_get(link->manager, link->iftype, link->sd_device,
link->ifname, link->alternative_names, link->driver,
&link->mac, &link->permanent_mac,
&link->hw_addr.addr.ether, &link->permanent_mac,
link->wlan_iftype, link->ssid, &link->bssid, &network);
if (r == -ENOENT) {
link_enter_unmanaged(link);
@ -2697,7 +2697,7 @@ static int link_admin_state_up(Link *link) {
int link_update(Link *link, sd_netlink_message *m) {
_cleanup_strv_free_ char **s = NULL;
struct ether_addr mac;
hw_addr_data hw_addr;
const char *ifname;
uint32_t mtu;
bool had_carrier, carrier_gained, carrier_lost, link_was_admin_up;
@ -2756,19 +2756,13 @@ int link_update(Link *link, sd_netlink_message *m) {
/* The kernel may broadcast NEWLINK messages without the MAC address
set, simply ignore them. */
r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac);
if (r >= 0 && memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, ETH_ALEN) != 0) {
r = netlink_message_read_hw_addr(m, IFLA_ADDRESS, &hw_addr);
if (r >= 0 && (link->hw_addr.length != hw_addr.length ||
memcmp(link->hw_addr.addr.bytes, hw_addr.addr.bytes, hw_addr.length) != 0)) {
memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, ETH_ALEN);
memcpy(link->hw_addr.addr.bytes, hw_addr.addr.bytes, hw_addr.length);
log_link_debug(link, "Gained new MAC address: "
"%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
mac.ether_addr_octet[0],
mac.ether_addr_octet[1],
mac.ether_addr_octet[2],
mac.ether_addr_octet[3],
mac.ether_addr_octet[4],
mac.ether_addr_octet[5]);
log_link_debug(link, "Gained new hardware address: %s", HW_ADDR_TO_STR(&hw_addr));
r = ipv4ll_update_mac(link);
if (r < 0)
@ -2787,7 +2781,7 @@ int link_update(Link *link, sd_netlink_message *m) {
return log_link_warning_errno(link, r, "Could not update MAC address for Router Advertisement: %m");
if (link->ndisc) {
r = sd_ndisc_set_mac(link->ndisc, &link->mac);
r = sd_ndisc_set_mac(link->ndisc, &link->hw_addr.addr.ether);
if (r < 0)
return log_link_warning_errno(link, r, "Could not update MAC for NDisc: %m");
}

3
src/network/networkd-link.h
View File

@ -16,6 +16,7 @@
#include "sd-radv.h"
#include "sd-netlink.h"
#include "ether-addr-util.h"
#include "log-link.h"
#include "network-util.h"
#include "networkd-util.h"
@ -52,7 +53,7 @@ typedef struct Link {
char *kind;
unsigned short iftype;
char *state_file;
struct ether_addr mac;
hw_addr_data hw_addr;
struct ether_addr permanent_mac;
struct in6_addr ipv6ll_address;
uint32_t mtu;

2
src/network/networkd-lldp-rx.c
View File

@ -93,7 +93,7 @@ int link_lldp_rx_configure(Link *link) {
if (r < 0)
return r;
r = sd_lldp_set_filter_address(link->lldp, &link->mac);
r = sd_lldp_set_filter_address(link->lldp, &link->hw_addr.addr.ether);
if (r < 0)
return r;

2
src/network/networkd-lldp-tx.c
View File

@ -313,7 +313,7 @@ static int link_send_lldp(Link *link) {
SD_LLDP_SYSTEM_CAPABILITIES_STATION;
r = lldp_make_packet(link->network->lldp_emit,
&link->mac,
&link->hw_addr.addr.ether,
sd_id128_to_string(machine_id, machine_id_string),
link->ifname,
(uint16_t) ttl,

9
src/network/networkd-ndisc.c
View File

@ -5,6 +5,7 @@
#include <arpa/inet.h>
#include <netinet/icmp6.h>
#include <net/if_arp.h>
#include <linux/if.h>
#include "sd-ndisc.h"
@ -593,7 +594,11 @@ static int make_stableprivate_address(Link *link, const struct in6_addr *prefix,
l = MAX(DIV_ROUND_UP(prefix_len, 8), 8);
siphash24_compress(prefix, l, &state);
siphash24_compress_string(link->ifname, &state);
siphash24_compress(&link->mac, sizeof(struct ether_addr), &state);
/* Only last 8 bytes of IB MAC are stable */
if (link->iftype == ARPHRD_INFINIBAND)
siphash24_compress(&link->hw_addr.addr.infiniband[12], 8, &state);
else
siphash24_compress(link->hw_addr.addr.bytes, link->hw_addr.length, &state);
siphash24_compress(&dad_counter, sizeof(uint8_t), &state);
rid = htole64(siphash24_finalize(&state));
@ -1257,7 +1262,7 @@ int ndisc_configure(Link *link) {
return r;
}
r = sd_ndisc_set_mac(link->ndisc, &link->mac);
r = sd_ndisc_set_mac(link->ndisc, &link->hw_addr.addr.ether);
if (r < 0)
return r;

4
src/network/networkd-radv.c
View File

@ -659,7 +659,7 @@ int radv_configure(Link *link) {
if (r < 0)
return r;
r = sd_radv_set_mac(link->radv, &link->mac);
r = sd_radv_set_mac(link->radv, &link->hw_addr.addr.ether);
if (r < 0)
return r;
@ -727,7 +727,7 @@ int radv_update_mac(Link *link) {
if (r < 0)
return r;
r = sd_radv_set_mac(link->radv, &link->mac);
r = sd_radv_set_mac(link->radv, &link->hw_addr.addr.ether);
if (r < 0)
return r;