diff options
| author | Martin Mares <mj@ucw.cz> | 1999-04-12 15:27:56 +0000 |
|---|---|---|
| committer | Martin Mares <mj@ucw.cz> | 1999-04-12 15:27:56 +0000 |
| commit | 61fb537c6273c50deb7d33f8af246993eab4bc4d (patch) | |
| tree | ee108fce7337013453b6b9c5065ccd2e2b45acce | |
| parent | 5a99ade413b97a780758f5c8f927604ad6c8e57b (diff) | |
Use `struct ip_mreqn' instead of `struct ip_mreq' for multicast
operations on 2.1/2.2 kernels. This allows passing of real interface
indexes instead of referencing interfaces by their IP addresses which
fails badly in presence of unnumbered interfaces.
Unfortunately, this structure is not visible with glibc 2.0 as it provides
its own networking headers :-( Both libc5 and glibc 2.1 should be OK.
| -rw-r--r-- | aclocal.m4 | 12 | ||||
| -rw-r--r-- | configure.in | 1 | ||||
| -rw-r--r-- | sysdep/autoconf.h.in | 3 | ||||
| -rw-r--r-- | sysdep/unix/io.c | 3 |
4 files changed, 17 insertions, 2 deletions
@@ -116,3 +116,15 @@ case "$bird_cv_type_time_t" in *) AC_DEFINE(TIME_T_IS_SIGNED) ;; esac ]) + +AC_DEFUN(BIRD_CHECK_STRUCT_IP_MREQN, +[AC_CACHE_CHECK([struct ip_mreqn], bird_cv_struct_ip_mreqn,[ +AC_TRY_COMPILE([#include <netinet/in.h> +],[struct ip_mreqn x; +],[bird_cv_struct_ip_mreqn=yes +],[bird_cv_struct_ip_mreqn=no +])]) +if test "$bird_cv_struct_ip_mreqn" = yes ; then + AC_DEFINE(HAVE_STRUCT_IP_MREQN) +fi +]) diff --git a/configure.in b/configure.in index 2cf123a4..a8ef7347 100644 --- a/configure.in +++ b/configure.in @@ -109,6 +109,7 @@ BIRD_CHECK_INTEGERS BIRD_CHECK_ENDIAN BIRD_CHECK_STRUCT_ALIGN BIRD_CHECK_TIME_T +BIRD_CHECK_STRUCT_MREQN if test "$enable_debug" = yes ; then AC_DEFINE(PATH_CONFIG_DIR, ".") diff --git a/sysdep/autoconf.h.in b/sysdep/autoconf.h.in index ae4d6b65..6c76f1a9 100644 --- a/sysdep/autoconf.h.in +++ b/sysdep/autoconf.h.in @@ -29,6 +29,9 @@ #undef TIME_T_IS_64BIT #undef TIME_T_IS_SIGNED +/* We have struct ip_mreqn in <netinet/in.h> */ +#undef HAVE_STRUCT_IP_MREQN + /* Protocols compiled in */ #undef CONFIG_STATIC #undef CONFIG_RIP diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c index 69f8a5c7..d98972c7 100644 --- a/sysdep/unix/io.c +++ b/sysdep/unix/io.c @@ -407,8 +407,7 @@ sk_open(sock *s) case SK_UDP_MC: case SK_IP_MC: { -#ifdef HAVE_IP_MREQN - /* FIXME: Define HAVE_IP_MREQN somewhere :) */ +#ifdef HAVE_STRUCT_IP_MREQN struct ip_mreqn mreq; #define mreq_add mreq ASSERT(s->iface); |