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Test interface flags for resolved LL6 address if on Linux

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1) The resolved LL6 address of an interface for automatic configuration of an
   interface may be tentative (privacy extensions, etc.) and/or have failed
   DAD. Make sure to evaluate the address flags at least on Linux where this
   is possible.
This commit is contained in:
Heiko Wundram 2020-11-10 08:23:17 +01:00
parent 89138834ed
commit 9924f756a1
3 changed files with 12 additions and 0 deletions
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3
src/build.h.in
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@ -52,6 +52,9 @@
/** Defined if the platform supports IP_PKTINFO */ /** Defined if the platform supports IP_PKTINFO */
#mesondefine USE_PKTINFO #mesondefine USE_PKTINFO
/** Defined if the platform support IFA_F_* for address types */
#mesondefine USE_IFAFLAGS
/** Defined if the platform supports SO_MARK */ /** Defined if the platform supports SO_MARK */
#mesondefine USE_PACKET_MARK #mesondefine USE_PACKET_MARK

8
src/config.c
View file

@ -37,6 +37,10 @@
#include <sys/stat.h> #include <sys/stat.h>
#ifdef USE_IFAFLAGS
#include <linux/if_addr.h>
#endif
/** The global configuration */ /** The global configuration */
fastd_config_t conf = {}; fastd_config_t conf = {};
@ -138,6 +142,10 @@ static void normalize_address(fastd_peer_address_t *address, const fastd_peer_ad
const fastd_peer_address_t *addr = (const fastd_peer_address_t *)ifa->ifa_addr; const fastd_peer_address_t *addr = (const fastd_peer_address_t *)ifa->ifa_addr;
if (!fastd_peer_address_is_v6_ll(addr)) if (!fastd_peer_address_is_v6_ll(addr))
continue; continue;
#ifdef USE_IFAFLAGS
if ((ifa->ifa_flags & IFA_F_DEPRECATED) || (ifa->ifa_flags & IFA_F_DADFAILED))
continue;
#endif
address->in6 = addr->in6; address->in6 = addr->in6;
address->in6.sin6_port = config->in6.sin6_port; address->in6.sin6_port = config->in6.sin6_port;

1
src/meson.build
View file

@ -192,6 +192,7 @@ conf_data.set('HAVE_SETRESGID',
conf_data.set('USE_BINDTODEVICE', is_android or is_linux) conf_data.set('USE_BINDTODEVICE', is_android or is_linux)
conf_data.set('USE_EPOLL', is_android or is_linux) conf_data.set('USE_EPOLL', is_android or is_linux)
conf_data.set('USE_IFAFLAGS', is_linux)
conf_data.set('USE_SELECT', is_darwin) conf_data.set('USE_SELECT', is_darwin)
conf_data.set('USE_FREEBIND', is_android or is_linux) conf_data.set('USE_FREEBIND', is_android or is_linux)
conf_data.set('USE_FREEBIND6', cc.has_header_symbol('netinet/in.h', 'IPV6_FREEBIND')) conf_data.set('USE_FREEBIND6', cc.has_header_symbol('netinet/in.h', 'IPV6_FREEBIND'))