vhost-user: compare mode MODE_PASTA and not MODE_PASST

As we are going to introduce the MODE_VU that will act like
the mode MODE_PASST, compare to MODE_PASTA rather than to add
a comparison to MODE_VU when we check for MODE_PASST.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

conf.c

@@ -147,7 +147,7 @@ static void conf_ports(const struct ctx *c, char optname, const char *optarg,
 		if (fwd->mode)
 			goto mode_conflict;
 
-		if (c->mode != MODE_PASST)
+		if (c->mode == MODE_PASTA)
 			die("'all' port forwarding is only allowed for passt");
 
 		fwd->mode = FWD_ALL;
@@ -1118,7 +1118,7 @@ static void conf_ugid(char *runas, uid_t *uid, gid_t *gid)
  */
 static void conf_open_files(struct ctx *c)
 {
-	if (c->mode == MODE_PASST && c->fd_tap == -1)
+	if (c->mode != MODE_PASTA && c->fd_tap == -1)
 		c->fd_tap_listen = tap_sock_unix_open(c->sock_path);
 
 	c->pidfile_fd = pidfile_open(c->pidfile);
@@ -1285,7 +1285,7 @@ void conf(struct ctx *c, int argc, char **argv)
 			c->no_dhcp_dns = 0;
 			break;
 		case 6:
-			if (c->mode != MODE_PASST)
+			if (c->mode == MODE_PASTA)
 				die("--no-dhcp-dns is for passt mode only");
 
 			c->no_dhcp_dns = 1;
@@ -1297,7 +1297,7 @@ void conf(struct ctx *c, int argc, char **argv)
 			c->no_dhcp_dns_search = 0;
 			break;
 		case 8:
-			if (c->mode != MODE_PASST)
+			if (c->mode == MODE_PASTA)
 				die("--no-dhcp-search is for passt mode only");
 
 			c->no_dhcp_dns_search = 1;
@@ -1352,7 +1352,7 @@ void conf(struct ctx *c, int argc, char **argv)
 			break;
 		case 14:
 			fprintf(stdout,
-				c->mode == MODE_PASST ? "passt " : "pasta ");
+				c->mode == MODE_PASTA ? "pasta " : "passt ");
 			fprintf(stdout, VERSION_BLOB);
 			exit(EXIT_SUCCESS);
 		case 15:
@@ -1648,7 +1648,7 @@ void conf(struct ctx *c, int argc, char **argv)
 			v6_only = true;
 			break;
 		case '1':
-			if (c->mode != MODE_PASST)
+			if (c->mode == MODE_PASTA)
 				die("--one-off is for passt mode only");
 
 			if (c->one_off)
@@ -1694,7 +1694,7 @@ void conf(struct ctx *c, int argc, char **argv)
 	conf_ugid(runas, &uid, &gid);
 
 	if (logfile) {
-		logfile_init(c->mode == MODE_PASST ? "passt" : "pasta",
+		logfile_init(c->mode == MODE_PASTA ? "pasta" : "passt",
 			     logfile, logsize);
 	}
 

isolation.c

@@ -312,7 +312,7 @@ int isolate_prefork(const struct ctx *c)
 	 * PID namespace. For passt, use CLONE_NEWPID anyway, in case somebody
 	 * ever gets around seccomp profiles -- there's no harm in passing it.
 	 */
-	if (!c->foreground || c->mode == MODE_PASST)
+	if (!c->foreground || c->mode != MODE_PASTA)
 		flags |= CLONE_NEWPID;
 
 	if (unshare(flags)) {
@@ -379,12 +379,12 @@ void isolate_postfork(const struct ctx *c)
 
 	prctl(PR_SET_DUMPABLE, 0);
 
-	if (c->mode == MODE_PASST) {
+	if (c->mode == MODE_PASTA) {
-		prog.len = (unsigned short)ARRAY_SIZE(filter_passt);
-		prog.filter = filter_passt;
-	} else {
 		prog.len = (unsigned short)ARRAY_SIZE(filter_pasta);
 		prog.filter = filter_pasta;
+	} else {
+		prog.len = (unsigned short)ARRAY_SIZE(filter_passt);
+		prog.filter = filter_passt;
 	}
 
 	if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) ||

passt.c

@@ -333,7 +333,7 @@ loop:
 		uint32_t eventmask = events[i].events;
 
 		trace("%s: epoll event on %s %i (events: 0x%08x)",
-		      c.mode == MODE_PASST ? "passt" : "pasta",
+		      c.mode == MODE_PASTA ? "pasta" : "passt",
 		      EPOLL_TYPE_STR(ref.type), ref.fd, eventmask);
 
 		switch (ref.type) {

tap.c

@@ -416,10 +416,10 @@ size_t tap_send_frames(const struct ctx *c, const struct iovec *iov,
 	if (!nframes)
 		return 0;
 
-	if (c->mode == MODE_PASST)
+	if (c->mode == MODE_PASTA)
-		m = tap_send_frames_passt(c, iov, bufs_per_frame, nframes);
-	else
 		m = tap_send_frames_pasta(c, iov, bufs_per_frame, nframes);
+	else
+		m = tap_send_frames_passt(c, iov, bufs_per_frame, nframes);
 
 	if (m < nframes)
 		debug("tap: failed to send %zu frames of %zu",
@@ -1330,7 +1330,9 @@ void tap_sock_init(struct ctx *c)
 		return;
 	}
 
-	if (c->mode == MODE_PASST) {
+	if (c->mode == MODE_PASTA) {
+		tap_sock_tun_init(c);
+	} else {
 		tap_sock_unix_init(c);
 
 		/* In passt mode, we don't know the guest's MAC address until it
@@ -1338,7 +1340,5 @@ void tap_sock_init(struct ctx *c)
 		 * first packets will reach it.
 		 */
 		memset(&c->mac_guest, 0xff, sizeof(c->mac_guest));
-	} else {
-		tap_sock_tun_init(c);
 	}
 }

tcp_buf.c

@@ -35,7 +35,7 @@
 
 #define TCP_FRAMES_MEM			128
 #define TCP_FRAMES							   \
-	(c->mode == MODE_PASST ? TCP_FRAMES_MEM : 1)
+	(c->mode == MODE_PASTA ? 1 : TCP_FRAMES_MEM)
 
 /* Static buffers */
 /**

udp.c

@@ -747,7 +747,7 @@ void udp_buf_sock_handler(const struct ctx *c, union epoll_ref ref, uint32_t eve
 	 * whether we'll use tap or splice, always go one at a time
 	 * for pasta mode.
 	 */
-	ssize_t n = (c->mode == MODE_PASST ? UDP_MAX_FRAMES : 1);
+	ssize_t n = (c->mode == MODE_PASTA ? 1 : UDP_MAX_FRAMES);
 	in_port_t dstport = ref.udp.port;
 	bool v6 = ref.udp.v6;
 	struct mmsghdr *mmh_recv;