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tests/vhost-user-bridge: read command line arguments

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Now some vhost-user-bridge parameters can be passed from the
command line:

Usage: prog [-u ud_socket_path] [-l lhost:lport] [-r rhost:rport]
        -u path to unix doman socket. default: /tmp/vubr.sock
        -l local host and port. default: 127.0.0.1:4444
        -r remote host and port. default: 127.0.0.1:5555

Signed-off-by: Victor Kaplansky <victork@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Victor Kaplansky 2015-11-24 12:56:00 +02:00 committed by Michael S. Tsirkin
parent 85ea9da5b8
commit 7cf32491ea
1 changed files with 112 additions and 19 deletions
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131
tests/vhost-user-bridge.c
View file

@ -45,6 +45,8 @@
#include <sys/mman.h>
#include <sys/eventfd.h>
#include <arpa/inet.h>
#include <ctype.h>
#include <netdb.h>
#include <linux/vhost.h>
@ -1210,33 +1212,62 @@ vubr_new(const char *path)
return dev;
}
static void
vubr_set_host(struct sockaddr_in *saddr, const char *host)
{
if (isdigit(host[0])) {
if (!inet_aton(host, &saddr->sin_addr)) {
fprintf(stderr, "inet_aton() failed.\n");
exit(1);
}
} else {
struct hostent *he = gethostbyname(host);
if (!he) {
fprintf(stderr, "gethostbyname() failed.\n");
exit(1);
}
saddr->sin_addr = *(struct in_addr *)he->h_addr;
}
}
static void
vubr_backend_udp_setup(VubrDev *dev,
const char *local_host,
uint16_t local_port,
const char *dest_host,
uint16_t dest_port)
const char *local_port,
const char *remote_host,
const char *remote_port)
{
int sock;
struct sockaddr_in si_local = {
.sin_family = AF_INET,
.sin_port = htons(local_port),
};
const char *r;
if (inet_aton(local_host, &si_local.sin_addr) == 0) {
fprintf(stderr, "inet_aton() failed.\n");
int lport, rport;
lport = strtol(local_port, (char **)&r, 0);
if (r == local_port) {
fprintf(stderr, "lport parsing failed.\n");
exit(1);
}
rport = strtol(remote_port, (char **)&r, 0);
if (r == remote_port) {
fprintf(stderr, "rport parsing failed.\n");
exit(1);
}
struct sockaddr_in si_local = {
.sin_family = AF_INET,
.sin_port = htons(lport),
};
vubr_set_host(&si_local, local_host);
/* setup destination for sends */
dev->backend_udp_dest = (struct sockaddr_in) {
.sin_family = AF_INET,
.sin_port = htons(dest_port),
.sin_port = htons(rport),
};
if (inet_aton(dest_host, &dev->backend_udp_dest.sin_addr) == 0) {
fprintf(stderr, "inet_aton() failed.\n");
exit(1);
}
vubr_set_host(&dev->backend_udp_dest, remote_host);
sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (sock == -1) {
@ -1250,7 +1281,7 @@ vubr_backend_udp_setup(VubrDev *dev,
dev->backend_udp_sock = sock;
dispatcher_add(&dev->dispatcher, sock, dev, vubr_backend_recv_cb);
DPRINT("Waiting for data from udp backend on %s:%d...\n",
local_host, local_port);
local_host, lport);
}
static void
@ -1263,19 +1294,81 @@ vubr_run(VubrDev *dev)
}
}
static int
vubr_parse_host_port(const char **host, const char **port, const char *buf)
{
char *p = strchr(buf, ':');
if (!p) {
return -1;
}
*p = '\0';
*host = strdup(buf);
*port = strdup(p + 1);
return 0;
}
#define DEFAULT_UD_SOCKET "/tmp/vubr.sock"
#define DEFAULT_LHOST "127.0.0.1"
#define DEFAULT_LPORT "4444"
#define DEFAULT_RHOST "127.0.0.1"
#define DEFAULT_RPORT "5555"
static const char *ud_socket_path = DEFAULT_UD_SOCKET;
static const char *lhost = DEFAULT_LHOST;
static const char *lport = DEFAULT_LPORT;
static const char *rhost = DEFAULT_RHOST;
static const char *rport = DEFAULT_RPORT;
int
main(int argc, char *argv[])
{
VubrDev *dev;
int opt;
dev = vubr_new("/tmp/vubr.sock");
while ((opt = getopt(argc, argv, "l:r:u:")) != -1) {
switch (opt) {
case 'l':
if (vubr_parse_host_port(&lhost, &lport, optarg) < 0) {
goto out;
}
break;
case 'r':
if (vubr_parse_host_port(&rhost, &rport, optarg) < 0) {
goto out;
}
break;
case 'u':
ud_socket_path = strdup(optarg);
break;
default:
goto out;
}
}
DPRINT("ud socket: %s\n", ud_socket_path);
DPRINT("local: %s:%s\n", lhost, lport);
DPRINT("remote: %s:%s\n", rhost, rport);
dev = vubr_new(ud_socket_path);
if (!dev) {
return 1;
}
vubr_backend_udp_setup(dev,
"127.0.0.1", 4444,
"127.0.0.1", 5555);
vubr_backend_udp_setup(dev, lhost, lport, rhost, rport);
vubr_run(dev);
return 0;
out:
fprintf(stderr, "Usage: %s ", argv[0]);
fprintf(stderr, "[-u ud_socket_path] [-l lhost:lport] [-r rhost:rport]\n");
fprintf(stderr, "\t-u path to unix doman socket. default: %s\n",
DEFAULT_UD_SOCKET);
fprintf(stderr, "\t-l local host and port. default: %s:%s\n",
DEFAULT_LHOST, DEFAULT_LPORT);
fprintf(stderr, "\t-r remote host and port. default: %s:%s\n",
DEFAULT_RHOST, DEFAULT_RPORT);
return 1;
}