Commit 274f2f11 authored by Ondřej Surý's avatar Ondřej Surý

Add test for recvmmsg MSG_WAITFORONE

Change-Id: I77615a328dce98e39964c567b55cf7c4dca331e2
parent 1b93cf15
......@@ -103,22 +103,32 @@ AC_ARG_ENABLE([debuglevel],
;;
esac], [])
AX_MSG_WAITFORONE
# recvmmsg() (valgrind doesn't support it, so disable for debugging)
AC_ARG_ENABLE([recvmmsg],
AS_HELP_STRING([--enable-recvmmsg=yes|no], [enable recvmmsg() network API under Linux (kernel support required) (set to 'no' if you have trouble running server under valgrind) [default=yes]]),
[case "${enableval}" in
yes)
AC_DEFINE([ENABLE_RECVMMSG], [1], [recvmmsg enabled])
;;
if test "$ax_cv_have_msg_waitforone" = "yes"; then
AC_DEFINE([ENABLE_RECVMMSG], [1], [recvmmsg enabled])
recvmmsg=true
else
recvmmsg=false
fi
;;
no)
recvmmsg=false
;;
recvmmsg=false
;;
*)
AC_MSG_ERROR([bad value ${enableval} for --enable-recvmmsg])
;;
AC_MSG_ERROR([bad value ${enableval} for --enable-recvmmsg])
;;
esac], [
AC_DEFINE([ENABLE_RECVMMSG], [1], [recvmmsg enabled])
recvmmsg=true
if test "$ax_cv_have_msg_waitforone" = "yes"; then
AC_DEFINE([ENABLE_RECVMMSG], [1], [recvmmsg enabled])
recvmmsg=true
else
recvmmsg=false
fi
])
# Check for link time optimizations support and predictive commoning
......
dnl @synopsis AX_MSG_WAITFORONE
dnl @summary Test if the libc/kernel have working recvmmsg MSG_WAITFORONE implementation
dnl @category Misc
dnl
dnl We need recvmmsg to support MSG_WAITFORONE. RHEL 6 (and derivates)
dnl are know for broken implementation
dnl
dnl @version 2013-03-12
dnl @license GPL
dnl @author Ondřej Surý <ondrej@sury.org> and Marek Vavruša <marek@vavrusa.com>
AC_DEFUN([AX_MSG_WAITFORONE],
[
AC_REQUIRE([AC_PROG_CC])
AC_LANG_PUSH([C])
AC_CACHE_CHECK([for recv_mmsg support], [ax_cv_have_msg_waitforone],
[
AC_RUN_IFELSE(
[
AC_LANG_PROGRAM(
[
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netinet/ip.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <signal.h>
volatile int _intr = 0;
void sighandle(int s) {
_intr = 1;
}
],[
#ifndef MSG_WAITFORONE
return 3; /* Not supported. */
#else
int port = 35353;
int fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0) return 1;
struct mmsghdr msgs[2];
struct iovec iovecs[2];
char bufs[2][64];
unsigned i = 0;
memset(msgs, 0, sizeof(msgs));
for (i = 0; i < 2; i++) {
iovecs[i].iov_base = bufs[i];
iovecs[i].iov_len = 64;
msgs[i].msg_hdr.msg_iov = &iovecs[i];
msgs[i].msg_hdr.msg_iovlen = 1;
}
struct sockaddr_in sa; /* Bind to socket. */
sa.sin_family = AF_INET;
sa.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
sa.sin_port = htons(port); /* Find free port. */
while (bind(fd, (struct sockaddr *)&sa, sizeof(sa)) == -1) {
if (errno == EADDRINUSE) sa.sin_port = ++port;
else break;
}
int cfd = socket(AF_INET, SOCK_DGRAM, 0); /* Send datagram. */
char pkt[32] = { '\xdf' };
sendto(cfd, pkt, sizeof(pkt), 0, (struct sockaddr*)&sa, sizeof(sa));
/* Broken implementation doesn't respect recvmmsg timeout. */
struct sigaction aset;
memset(&aset, 0, sizeof(struct sigaction));
aset.sa_handler = sighandle;
sigaction(SIGALRM, &aset, NULL);
alarm(1);
int ret = recvmmsg(fd, msgs, 2, MSG_WAITFORONE, NULL);
close(cfd);
close(fd);
if (ret < 0) { /* Completely failed. */
return 2;
}
return _intr; /* OK if not interrupted. */
#endif
])],
[ax_cv_have_msg_waitforone=yes],
[ax_cv_have_msg_waitforone=no],
[ax_cv_have_msg_waitforone=no])])
AC_LANG_POP([C])
])
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