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-rw-r--r--i/pc104/initrd/conf/busybox/networking/vconfig.c165
1 files changed, 165 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/networking/vconfig.c b/i/pc104/initrd/conf/busybox/networking/vconfig.c
new file mode 100644
index 0000000..06c06cb
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/networking/vconfig.c
@@ -0,0 +1,165 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * vconfig implementation for busybox
+ *
+ * Copyright (C) 2001 Manuel Novoa III <mjn3@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+/* BB_AUDIT SUSv3 N/A */
+
+#include "busybox.h"
+#include <net/if.h>
+
+/* Stuff from linux/if_vlan.h, kernel version 2.4.23 */
+enum vlan_ioctl_cmds {
+ ADD_VLAN_CMD,
+ DEL_VLAN_CMD,
+ SET_VLAN_INGRESS_PRIORITY_CMD,
+ SET_VLAN_EGRESS_PRIORITY_CMD,
+ GET_VLAN_INGRESS_PRIORITY_CMD,
+ GET_VLAN_EGRESS_PRIORITY_CMD,
+ SET_VLAN_NAME_TYPE_CMD,
+ SET_VLAN_FLAG_CMD
+};
+enum vlan_name_types {
+ VLAN_NAME_TYPE_PLUS_VID, /* Name will look like: vlan0005 */
+ VLAN_NAME_TYPE_RAW_PLUS_VID, /* name will look like: eth1.0005 */
+ VLAN_NAME_TYPE_PLUS_VID_NO_PAD, /* Name will look like: vlan5 */
+ VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD, /* Name will look like: eth0.5 */
+ VLAN_NAME_TYPE_HIGHEST
+};
+
+struct vlan_ioctl_args {
+ int cmd; /* Should be one of the vlan_ioctl_cmds enum above. */
+ char device1[24];
+
+ union {
+ char device2[24];
+ int VID;
+ unsigned int skb_priority;
+ unsigned int name_type;
+ unsigned int bind_type;
+ unsigned int flag; /* Matches vlan_dev_info flags */
+ } u;
+
+ short vlan_qos;
+};
+
+#define VLAN_GROUP_ARRAY_LEN 4096
+#define SIOCSIFVLAN 0x8983 /* Set 802.1Q VLAN options */
+
+/* On entry, table points to the length of the current string plus
+ * nul terminator plus data length for the subsequent entry. The
+ * return value is the last data entry for the matching string. */
+static const char *xfind_str(const char *table, const char *str)
+{
+ while (strcasecmp(str, table+1) != 0) {
+ if (!*(table += table[0])) {
+ bb_show_usage();
+ }
+ }
+ return table - 1;
+}
+
+static const char cmds[] = {
+ 4, ADD_VLAN_CMD, 7,
+ 'a', 'd', 'd', 0,
+ 3, DEL_VLAN_CMD, 7,
+ 'r', 'e', 'm', 0,
+ 3, SET_VLAN_NAME_TYPE_CMD, 17,
+ 's', 'e', 't', '_',
+ 'n', 'a', 'm', 'e', '_',
+ 't', 'y', 'p', 'e', 0,
+ 5, SET_VLAN_FLAG_CMD, 12,
+ 's', 'e', 't', '_',
+ 'f', 'l', 'a', 'g', 0,
+ 5, SET_VLAN_EGRESS_PRIORITY_CMD, 18,
+ 's', 'e', 't', '_',
+ 'e', 'g', 'r', 'e', 's', 's', '_',
+ 'm', 'a', 'p', 0,
+ 5, SET_VLAN_INGRESS_PRIORITY_CMD, 16,
+ 's', 'e', 't', '_',
+ 'i', 'n', 'g', 'r', 'e', 's', 's', '_',
+ 'm', 'a', 'p', 0,
+};
+
+static const char name_types[] = {
+ VLAN_NAME_TYPE_PLUS_VID, 16,
+ 'V', 'L', 'A', 'N',
+ '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
+ 0,
+ VLAN_NAME_TYPE_PLUS_VID_NO_PAD, 22,
+ 'V', 'L', 'A', 'N',
+ '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
+ '_', 'N', 'O', '_', 'P', 'A', 'D', 0,
+ VLAN_NAME_TYPE_RAW_PLUS_VID, 15,
+ 'D', 'E', 'V',
+ '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
+ 0,
+ VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD, 20,
+ 'D', 'E', 'V',
+ '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
+ '_', 'N', 'O', '_', 'P', 'A', 'D', 0,
+};
+
+static const char conf_file_name[] = "/proc/net/vlan/config";
+
+int vconfig_main(int argc, char **argv);
+int vconfig_main(int argc, char **argv)
+{
+ struct vlan_ioctl_args ifr;
+ const char *p;
+ int fd;
+
+ if (argc < 3) {
+ bb_show_usage();
+ }
+
+ /* Don't bother closing the filedes. It will be closed on cleanup. */
+ /* Will die if 802.1q is not present */
+ xopen(conf_file_name, O_RDONLY);
+
+ memset(&ifr, 0, sizeof(struct vlan_ioctl_args));
+
+ ++argv;
+ p = xfind_str(cmds+2, *argv);
+ ifr.cmd = *p;
+ if (argc != p[-1]) {
+ bb_show_usage();
+ }
+
+ if (ifr.cmd == SET_VLAN_NAME_TYPE_CMD) { /* set_name_type */
+ ifr.u.name_type = *xfind_str(name_types+1, argv[1]);
+ } else {
+ if (strlen(argv[1]) >= IF_NAMESIZE) {
+ bb_error_msg_and_die("if_name >= %d chars", IF_NAMESIZE);
+ }
+ strcpy(ifr.device1, argv[1]);
+ p = argv[2];
+
+ /* I suppose one could try to combine some of the function calls below,
+ * since ifr.u.flag, ifr.u.VID, and ifr.u.skb_priority are all same-sized
+ * (unsigned) int members of a unions. But because of the range checking,
+ * doing so wouldn't save that much space and would also make maintainence
+ * more of a pain. */
+ if (ifr.cmd == SET_VLAN_FLAG_CMD) { /* set_flag */
+ ifr.u.flag = xatoul_range(p, 0, 1);
+ /* DM: in order to set reorder header, qos must be set */
+ ifr.vlan_qos = xatoul_range(argv[3], 0, 7);
+ } else if (ifr.cmd == ADD_VLAN_CMD) { /* add */
+ ifr.u.VID = xatoul_range(p, 0, VLAN_GROUP_ARRAY_LEN-1);
+ } else if (ifr.cmd != DEL_VLAN_CMD) { /* set_{egress|ingress}_map */
+ ifr.u.skb_priority = xatou(p);
+ ifr.vlan_qos = xatoul_range(argv[3], 0, 7);
+ }
+ }
+
+ fd = xsocket(AF_INET, SOCK_STREAM, 0);
+ if (ioctl(fd, SIOCSIFVLAN, &ifr) < 0) {
+ bb_perror_msg_and_die("ioctl error for %s", *argv);
+ }
+
+ return 0;
+}