1From 44385771ef63f081ed7e80eae6f24591046b4c7c Mon Sep 17 00:00:00 2001
2Message-ID: <44385771ef63f081ed7e80eae6f24591046b4c7c.1687508149.git.stefan@agner.ch>
3In-Reply-To: <e136dcdcdd93ef32ada981e89c195905eb809eea.1687508149.git.stefan@agner.ch>
4References: <e136dcdcdd93ef32ada981e89c195905eb809eea.1687508149.git.stefan@agner.ch>
5From: Nate Karstens <[email protected]>
6Date: Tue, 1 Aug 2017 17:06:01 -0500
7Subject: [PATCH] Indicate loopback interface to mDNS core
8
9Tells the mDNS core if an interface is a loopback interface,
10similar to AddInterfaceToList() in the MacOS implementation.
11
12Upstream-Status: Submitted [[email protected]]
13
14Signed-off-by: Nate Karstens <[email protected]>
15Signed-off-by: Alex Kiernan <[email protected]>
16---
17 mDNSPosix/mDNSPosix.c | 7 ++++---
18 1 file changed, 4 insertions(+), 3 deletions(-)
19
20diff --git a/mDNSPosix/mDNSPosix.c b/mDNSPosix/mDNSPosix.c
21index 9a5b4d7..02a19b4 100644
22--- a/mDNSPosix/mDNSPosix.c
23+++ b/mDNSPosix/mDNSPosix.c
24@@ -1348,7 +1348,7 @@ mDNSlocal void CleanRecentInterfaces(void)
25 // Creates a PosixNetworkInterface for the interface whose IP address is
26 // intfAddr and whose name is intfName and registers it with mDNS core.
27 mDNSlocal int SetupOneInterface(mDNS *const m, struct sockaddr *intfAddr, struct sockaddr *intfMask,
28-    const mDNSu8 *intfHaddr, mDNSu16 intfHlen, const char *intfName, int intfIndex)
29+    const mDNSu8 *intfHaddr, mDNSu16 intfHlen, const char *intfName, int intfIndex, int intfFlags)
30 {
31     int err = 0;
32     PosixNetworkInterface *intf;
33@@ -1411,6 +1411,7 @@ mDNSlocal int SetupOneInterface(mDNS *const m, struct sockaddr *intfAddr, struct
34
35         intf->coreIntf.Advertise = m->AdvertiseLocalAddresses;
36         intf->coreIntf.McastTxRx = mDNStrue;
37+        intf->coreIntf.Loopback = ((intfFlags & IFF_LOOPBACK) != 0) ? mDNStrue : mDNSfalse;
38
39         // Set up the extra fields in PosixNetworkInterface.
40         assert(intf->intfName != NULL);         // intf->intfName already set up above
41@@ -1561,7 +1562,7 @@ mDNSlocal int SetupInterfaceList(mDNS *const m)
42                     }
43 #endif
44                     if (SetupOneInterface(m, i->ifa_addr, i->ifa_netmask,
45-                                          hwaddr, hwaddr_len, i->ifa_name, ifIndex) == 0)
46+                                          hwaddr, hwaddr_len, i->ifa_name, ifIndex, i->ifa_flags) == 0)
47                     {
48                         if (i->ifa_addr->sa_family == AF_INET)
49                             foundav4 = mDNStrue;
50@@ -1578,7 +1579,7 @@ mDNSlocal int SetupInterfaceList(mDNS *const m)
51         // if ((m->HostInterfaces == NULL) && (firstLoopback != NULL))
52         if (!foundav4 && firstLoopback)
53             (void) SetupOneInterface(m, firstLoopback->ifa_addr, firstLoopback->ifa_netmask,
54-                NULL, 0, firstLoopback->ifa_name, firstLoopbackIndex);
55+                NULL, 0, firstLoopback->ifa_name, firstLoopbackIndex, firstLoopback->ifa_flags);
56     }
57
58     // Clean up.
59--
602.41.0
61
62