moved IFF_LINK handling to the device module (ethernet in this case). Now domain interfaces only keep specific flags such as IFF_UP and the configuration flags. IFF_LINK, IFF_BROADCAST etc are maintained exclusively by the device.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20612 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/network/devices/ethernet/ethernet.cpp

@@ -67,6 +67,11 @@ update_link_state(ethernet_device *device, bool notify = true)
 		device->link_quality = state.quality;
 		device->link_speed = state.speed;
 
+		if (device->media & IFM_ACTIVE)
+			device->flags |= IFF_LINK;
+		else
+			device->flags &= ~IFF_LINK;
+
 		dprintf("%s: media change, media 0x%0x quality %u speed %u\n",
 				device->name, (unsigned int)device->media,
 				(unsigned int)device->link_quality,
@@ -132,7 +137,7 @@ ethernet_init(const char *name, net_device **_device)
 	memset(device, 0, sizeof(ethernet_device));
 
 	strcpy(device->name, name);
-	device->flags = IFF_BROADCAST;
+	device->flags = IFF_BROADCAST | IFF_LINK;
 	device->type = IFT_ETHER;
 	device->mtu = 1500;
 	device->media = IFM_ACTIVE | IFM_ETHER;

src/add-ons/kernel/network/devices/loopback/loopback.cpp

@@ -15,6 +15,7 @@
 
 #include <net/if.h>
 #include <net/if_types.h>
+#include <net/if_media.h>
 #include <new>
 #include <stdlib.h>
 #include <string.h>
@@ -85,9 +86,10 @@ loopback_init(const char *name, net_device **_device)
 	memset(device, 0, sizeof(loopback_device));
 
 	strcpy(device->name, name);
-	device->flags = IFF_LOOPBACK;
+	device->flags = IFF_LOOPBACK | IFF_LINK;
 	device->type = IFT_LOOP;
 	device->mtu = 16384;
+	device->media = IFM_ACTIVE;
 
 	*_device = device;
 	return B_OK;

src/add-ons/kernel/network/stack/datalink.cpp

@@ -619,7 +619,7 @@ interface_protocol_control(net_datalink_protocol *_protocol,
 		{
 			// get flags
 			struct ifreq request;
-			request.ifr_flags = interface->flags;
+			request.ifr_flags = interface->flags | interface->device->flags;
 
 			return user_memcpy(&((struct ifreq *)argument)->ifr_flags,
 				&request.ifr_flags, sizeof(request.ifr_flags));

src/add-ons/kernel/network/stack/domains.cpp

@@ -224,28 +224,28 @@ domain_interface_control(net_domain_private *domain, int32 option,
 					break;
 
 				case SIOCSIFFLAGS:
-				if (((uint32)request->ifr_flags & IFF_UP)
-					!= (interface->flags & IFF_UP)) {
-					if (interface->flags & IFF_UP) {
-						interface_set_down(interface);
-					} else {
+				{
+					uint32 requestFlags = request->ifr_flags;
+					request->ifr_flags &= ~(IFF_UP | IFF_LINK | IFF_BROADCAST);
+
+					if ((requestFlags & IFF_UP) != (interface->flags & IFF_UP)) {
+						if (requestFlags & IFF_UP) {
 							status = interface->first_info->interface_up(
 								interface->first_protocol);
-						if (status == B_OK) {
+							if (status == B_OK)
 								interface->flags |= IFF_UP;
-							// TODO this doesn't belong here
-							if (interface->device->media & IFM_ACTIVE)
-								interface->flags |= IFF_LINK;
-						}
+						} else {
+							interface_set_down(interface);
 						}
 					}
 
 					if (status == B_OK)
-					interface->flags |= request->ifr_flags & ~(IFF_UP | IFF_LINK);
+						interface->flags |= request->ifr_flags;
 					break;
 				}
 			}
 		}
+	}
 
 	// If the SIOCDIFADDR call above removed the last interface
 	// associated with the device interface, this put_() will
@@ -256,38 +256,6 @@ domain_interface_control(net_domain_private *domain, int32 option,
 }
 
 
-void
-domain_interfaces_link_changed(net_device *device)
-{
-	// TODO: notify listeners about this!
-
-	BenaphoreLocker locker(sDomainLock);
-
-	net_domain_private *domain = NULL;
-	while (true) {
-		domain = (net_domain_private *)list_get_next_item(&sDomains, domain);
-		if (domain == NULL)
-			break;
-
-		BenaphoreLocker locker(domain->lock);
-
-		net_interface *interface = NULL;
-		while (true) {
-			interface = (net_interface *)list_get_next_item(&domain->interfaces,
-				interface);
-			if (interface == NULL)
-				break;
-
-			if (interface->device == device) {
-				// update IFF_LINK flag
-				interface->flags = (interface->flags & ~IFF_LINK)
-					| (device->media & IFM_ACTIVE ? IFF_LINK : 0);
-			}
-		}
-	}
-}
-
-
 void
 domain_interface_went_down(net_interface *interface)
 {

src/add-ons/kernel/network/stack/domains.h

@@ -36,7 +36,6 @@ uint32 count_domain_interfaces();
 status_t list_domain_interfaces(void *buffer, size_t *_bufferSize);
 status_t add_interface_to_domain(net_domain *domain, struct ifreq& request);
 status_t remove_interface_from_domain(net_interface *interface);
-void domain_interfaces_link_changed(net_device *device);
 void domain_interface_went_down(net_interface *);
 void domain_removed_device_interface(net_device_interface *);
 status_t domain_interface_control(net_domain_private *domain, int32 option,

src/add-ons/kernel/network/stack/interfaces.cpp

@@ -141,7 +141,7 @@ create_interface(net_domain *domain, const char *name, const char *baseName,
 	interface->mask = NULL;
 
 	interface->index = ++sInterfaceIndex;
-	interface->flags = deviceInterface->device->flags & ~IFF_UP;
+	interface->flags = 0;
 	interface->type = 0;
 	interface->mtu = deviceInterface->device->mtu;
 	interface->metric = 0;
@@ -169,8 +169,7 @@ interface_set_down(net_interface *interface)
 	if ((interface->flags & IFF_UP) == 0)
 		return;
 
-	// TODO: IFF_LINK should belong in device only
-	interface->flags &= ~(IFF_UP | IFF_LINK);
+	interface->flags &= ~IFF_UP;
 	interface->first_info->interface_down(interface->first_protocol);
 }
 
@@ -658,7 +657,6 @@ unregister_device_monitor(struct net_device *device,
 status_t
 device_link_changed(net_device *device)
 {
-	domain_interfaces_link_changed(device);
 	return B_OK;
 }