From a44430fe9115f58aa72f211cb114a2e1f63bf4c5 Mon Sep 17 00:00:00 2001 From: Matt Hoosier Date: Wed, 5 Feb 2020 16:04:49 -0600 Subject: mdns: improve numerous aspects of Posix backend Apple's default implementation of the Posix backend for mDNSResponder has a number of weaknesses. Address several of them, most notably: * Improve interface tracking, preventing confusion to mdns's state machine. Prevents spurious removal/republication cycles whenever network interfaces are added or removed. * Support network interfaces whose indeces are great than 31. Indices grow past that range surprisingly quickly, especially with multi- homed, mobile, wifi, Bluetooth, VPN, VLANs, or other interfaces present. * Correctly handle edge cases during removal of a network interface. The fixes are kept as a patch series for clarity. Signed-off-by: Matt Hoosier Signed-off-by: Khem Raj --- .../files/0003-Track-interface-socket-family.patch | 50 ++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 meta-networking/recipes-protocols/mdns/files/0003-Track-interface-socket-family.patch (limited to 'meta-networking/recipes-protocols/mdns/files/0003-Track-interface-socket-family.patch') diff --git a/meta-networking/recipes-protocols/mdns/files/0003-Track-interface-socket-family.patch b/meta-networking/recipes-protocols/mdns/files/0003-Track-interface-socket-family.patch new file mode 100644 index 0000000000..8c0e6bf397 --- /dev/null +++ b/meta-networking/recipes-protocols/mdns/files/0003-Track-interface-socket-family.patch @@ -0,0 +1,50 @@ +From 71a7c728ae0d8143b66aa40decca74ebaa9aa2ce Mon Sep 17 00:00:00 2001 +From: Nate Karstens +Date: Wed, 28 Jun 2017 17:30:00 -0500 +Subject: [PATCH 03/11] Track interface socket family + +Tracks the socket family associated with the interface. + +Upstream-Status: Submitted [dts@apple.com] + +Signed-off-by: Nate Karstens +--- + mDNSPosix/mDNSPosix.c | 1 + + mDNSPosix/mDNSPosix.h | 2 ++ + 2 files changed, 3 insertions(+) + +diff --git a/mDNSPosix/mDNSPosix.c b/mDNSPosix/mDNSPosix.c +index 5e5b2cd..8fe22be 100644 +--- a/mDNSPosix/mDNSPosix.c ++++ b/mDNSPosix/mDNSPosix.c +@@ -918,6 +918,7 @@ mDNSlocal int SetupOneInterface(mDNS *const m, struct sockaddr *intfAddr, struct + // Set up the extra fields in PosixNetworkInterface. + assert(intf->intfName != NULL); // intf->intfName already set up above + intf->index = intfIndex; ++ intf->sa_family = intfAddr->sa_family; + intf->multicastSocket4 = -1; + #if HAVE_IPV6 + intf->multicastSocket6 = -1; +diff --git a/mDNSPosix/mDNSPosix.h b/mDNSPosix/mDNSPosix.h +index ca60d80..f77c185 100644 +--- a/mDNSPosix/mDNSPosix.h ++++ b/mDNSPosix/mDNSPosix.h +@@ -19,6 +19,7 @@ + #define __mDNSPlatformPosix_h + + #include ++#include + #include + + #ifdef __cplusplus +@@ -40,6 +41,7 @@ struct PosixNetworkInterface + const char * intfName; + PosixNetworkInterface * aliasIntf; + int index; ++ sa_family_t sa_family; + int multicastSocket4; + #if HAVE_IPV6 + int multicastSocket6; +-- +2.17.1 + -- cgit v1.2.3-54-g00ecf