Merge pull request #13166 from yuwata/network-slcan-support

network: slcan support

src/basic/socket-util.h

@@ -3,9 +3,9 @@
 
 #include <inttypes.h>
 #include <linux/netlink.h>
+#include <linux/if_ether.h>
 #include <linux/if_infiniband.h>
 #include <linux/if_packet.h>
-#include <netinet/ether.h>
 #include <netinet/in.h>
 #include <stdbool.h>
 #include <stddef.h>

src/libsystemd-network/arp-util.c

@@ -3,8 +3,9 @@
   Copyright © 2014 Axis Communications AB. All rights reserved.
 ***/
 
-#include <linux/filter.h>
 #include <arpa/inet.h>
+#include <linux/filter.h>
+#include <netinet/if_ether.h>
 
 #include "arp-util.h"
 #include "fd-util.h"

src/libsystemd-network/sd-dhcp6-client.c

@@ -6,6 +6,7 @@
 #include <errno.h>
 #include <string.h>
 #include <sys/ioctl.h>
+#include <linux/if_arp.h>
 #include <linux/if_infiniband.h>
 
 #include "sd-dhcp6-client.h"

src/libsystemd-network/sd-ipv4acd.c

@@ -5,6 +5,7 @@
 
 #include <arpa/inet.h>
 #include <errno.h>
+#include <netinet/if_ether.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

src/libsystemd-network/test-dhcp6-client.c

@@ -4,6 +4,7 @@
 ***/
 
 #include <net/ethernet.h>
+#include <net/if_arp.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <sys/socket.h>

src/libsystemd-network/test-ipv4ll.c

@@ -4,6 +4,7 @@
 ***/
 
 #include <errno.h>
+#include <netinet/if_ether.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/socket.h>

src/network/networkd-dhcp4.c

@@ -2,6 +2,7 @@
 
 #include <netinet/in.h>
 #include <linux/if.h>
+#include <linux/if_arp.h>
 
 #include "alloc-util.h"
 #include "hostname-util.h"

src/network/networkd-dhcp6.c

@@ -5,6 +5,7 @@
 
 #include <netinet/in.h>
 #include <linux/if.h>
+#include <linux/if_arp.h>
 #include "sd-radv.h"
 
 #include "sd-dhcp6-client.h"

src/network/networkd-link.c

@@ -2,6 +2,7 @@
 
 #include <netinet/in.h>
 #include <linux/if.h>
+#include <linux/if_arp.h>
 #include <unistd.h>
 
 #include "alloc-util.h"
@@ -89,6 +90,13 @@ int link_sysctl_ipv6_enabled(Link *link) {
         return link->sysctl_ipv6_enabled;
 }
 
+static bool link_is_can(Link *link) {
+        assert(link);
+
+        return link->iftype == ARPHRD_CAN ||
+                STRPTR_IN_SET(link->kind, "can", "vcan", "vxcan");
+}
+
 static bool link_dhcp6_enabled(Link *link) {
         assert(link);
 
@@ -104,7 +112,7 @@ static bool link_dhcp6_enabled(Link *link) {
         if (link->network->bond)
                 return false;
 
-        if (STRPTR_IN_SET(link->kind, "can", "vcan", "vxcan"))
+        if (link_is_can(link))
                 return false;
 
         if (link_sysctl_ipv6_enabled(link) == 0)
@@ -125,7 +133,7 @@ static bool link_dhcp4_enabled(Link *link) {
         if (link->network->bond)
                 return false;
 
-        if (STRPTR_IN_SET(link->kind, "can", "vcan", "vxcan"))
+        if (link_is_can(link))
                 return false;
 
         return link->network->dhcp & ADDRESS_FAMILY_IPV4;
@@ -143,7 +151,7 @@ static bool link_dhcp4_server_enabled(Link *link) {
         if (link->network->bond)
                 return false;
 
-        if (STRPTR_IN_SET(link->kind, "can", "vcan", "vxcan"))
+        if (link_is_can(link))
                 return false;
 
         return link->network->dhcp_server;
@@ -159,9 +167,12 @@ bool link_ipv4ll_enabled(Link *link, AddressFamilyBoolean mask) {
         if (!link->network)
                 return false;
 
+        if (link_is_can(link))
+                return false;
+
         if (STRPTR_IN_SET(link->kind,
                           "vrf", "wireguard", "ipip", "gre", "ip6gre","ip6tnl", "sit", "vti",
-                          "vti6", "can", "vcan", "vxcan", "nlmon", "xfrm"))
+                          "vti6", "nlmon", "xfrm"))
                 return false;
 
         /* L3 or L3S mode do not support ARP. */
@@ -186,7 +197,10 @@ static bool link_ipv6ll_enabled(Link *link) {
         if (!link->network)
                 return false;
 
-        if (STRPTR_IN_SET(link->kind, "vrf", "wireguard", "ipip", "gre", "sit", "vti", "can", "vcan", "vxcan", "nlmon"))
+        if (link_is_can(link))
+                return false;
+
+        if (STRPTR_IN_SET(link->kind, "vrf", "wireguard", "ipip", "gre", "sit", "vti", "nlmon"))
                 return false;
 
         if (link->network->bond)
@@ -210,7 +224,7 @@ static bool link_ipv6_enabled(Link *link) {
         if (link_sysctl_ipv6_enabled(link) == 0)
                 return false;
 
-        if (STRPTR_IN_SET(link->kind, "can", "vcan", "vxcan"))
+        if (link_is_can(link))
                 return false;
 
         /* DHCPv6 client will not be started if no IPv6 link-local address is configured. */
@@ -2494,7 +2508,7 @@ static int link_configure(Link *link) {
         assert(link->network);
         assert(link->state == LINK_STATE_INITIALIZED);
 
-        if (STRPTR_IN_SET(link->kind, "can", "vcan", "vxcan"))
+        if (link_is_can(link))
                 return link_configure_can(link);
 
         /* Drop foreign config, but ignore loopback or critical devices.

src/network/networkd-lldp-rx.c

@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
 
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <unistd.h>
 
 #include "fd-util.h"

src/network/networkd-lldp-tx.c

@@ -3,6 +3,7 @@
 #include <endian.h>
 #include <inttypes.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <string.h>
 
 #include "alloc-util.h"

src/systemd/sd-netlink.h

@@ -19,7 +19,6 @@
 
 #include <inttypes.h>
 #include <net/ethernet.h>
-#include <netinet/ether.h>
 #include <netinet/in.h>
 #include <linux/neighbour.h>
 #include <linux/rtnetlink.h>