-#include <linux/nl80211.h>
#include <net/if.h>
#include <errno.h>
#include <string.h>
+#include <stdbool.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/msg.h>
#include <netlink/attr.h>
+#include "nl80211.h"
#include "iw.h"
-/* return 0 if not found, 1 if ok, -1 on error */
-static int get_if_type(int *argc, char ***argv, enum nl80211_iftype *type)
+#define VALID_FLAGS "none: no special flags\n"\
+ "fcsfail: show frames with FCS errors\n"\
+ "control: show control frames\n"\
+ "otherbss: show frames from other BSSes\n"\
+ "cook: use cooked mode"
+
+SECTION(interface);
+
+static char *mntr_flags[NL80211_MNTR_FLAG_MAX + 1] = {
+ "none",
+ "fcsfail",
+ "plcpfail",
+ "control",
+ "otherbss",
+ "cook",
+};
+
+static int parse_mntr_flags(int *_argc, char ***_argv,
+ struct nl_msg *msg)
+{
+ struct nl_msg *flags;
+ int err = -ENOBUFS;
+ enum nl80211_mntr_flags flag;
+ int argc = *_argc;
+ char **argv = *_argv;
+
+ flags = nlmsg_alloc();
+ if (!flags)
+ return -ENOMEM;
+
+ while (argc) {
+ int ok = 0;
+ for (flag = __NL80211_MNTR_FLAG_INVALID;
+ flag <= NL80211_MNTR_FLAG_MAX; flag++) {
+ if (strcmp(*argv, mntr_flags[flag]) == 0) {
+ ok = 1;
+ /*
+ * This shouldn't be adding "flag" if that is
+ * zero, but due to a problem in the kernel's
+ * nl80211 code (using NLA_NESTED policy) it
+ * will reject an empty nested attribute but
+ * not one that contains an invalid attribute
+ */
+ NLA_PUT_FLAG(flags, flag);
+ break;
+ }
+ }
+ if (!ok) {
+ err = -EINVAL;
+ goto out;
+ }
+ argc--;
+ argv++;
+ }
+
+ nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
+ err = 0;
+ nla_put_failure:
+ out:
+ nlmsg_free(flags);
+
+ *_argc = argc;
+ *_argv = argv;
+
+ return err;
+}
+
+/* for help */
+#define IFACE_TYPES "Valid interface types are: managed, ibss, monitor, mesh, wds."
+
+/* return 0 if ok, internal error otherwise */
+static int get_if_type(int *argc, char ***argv, enum nl80211_iftype *type,
+ bool need_type)
{
char *tpstr;
- if (*argc < 2)
- return 0;
+ if (*argc < 1 + !!need_type)
+ return 1;
- if (strcmp((*argv)[0], "type"))
- return 0;
+ if (need_type && strcmp((*argv)[0], "type"))
+ return 1;
- tpstr = (*argv)[1];
- *argc -= 2;
- *argv += 2;
+ tpstr = (*argv)[!!need_type];
+ *argc -= 1 + !!need_type;
+ *argv += 1 + !!need_type;
if (strcmp(tpstr, "adhoc") == 0 ||
strcmp(tpstr, "ibss") == 0) {
*type = NL80211_IFTYPE_ADHOC;
- return 1;
+ return 0;
} else if (strcmp(tpstr, "monitor") == 0) {
*type = NL80211_IFTYPE_MONITOR;
- return 1;
+ return 0;
+ } else if (strcmp(tpstr, "master") == 0 ||
+ strcmp(tpstr, "ap") == 0) {
+ *type = NL80211_IFTYPE_UNSPECIFIED;
+ fprintf(stderr, "You need to run a management daemon, e.g. hostapd,\n");
+ fprintf(stderr, "see http://wireless.kernel.org/en/users/Documentation/hostapd\n");
+ fprintf(stderr, "for more information on how to do that.\n");
+ return 2;
} else if (strcmp(tpstr, "__ap") == 0) {
*type = NL80211_IFTYPE_AP;
- return 1;
+ return 0;
} else if (strcmp(tpstr, "__ap_vlan") == 0) {
*type = NL80211_IFTYPE_AP_VLAN;
- return 1;
+ return 0;
} else if (strcmp(tpstr, "wds") == 0) {
*type = NL80211_IFTYPE_WDS;
- return 1;
- } else if (strcmp(tpstr, "station") == 0) {
+ return 0;
+ } else if (strcmp(tpstr, "managed") == 0 ||
+ strcmp(tpstr, "mgd") == 0 ||
+ strcmp(tpstr, "station") == 0) {
*type = NL80211_IFTYPE_STATION;
- return 1;
+ return 0;
} else if (strcmp(tpstr, "mp") == 0 ||
- strcmp(tpstr, "mesh") == 0) {
+ strcmp(tpstr, "mesh") == 0) {
*type = NL80211_IFTYPE_MESH_POINT;
- return 1;
+ return 0;
}
-
fprintf(stderr, "invalid interface type %s\n", tpstr);
- return -1;
+ return 2;
+}
+
+static int parse_4addr_flag(const char *value, struct nl_msg *msg)
+{
+ if (strcmp(value, "on") == 0)
+ NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, 1);
+ else if (strcmp(value, "off") == 0)
+ NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, 0);
+ else
+ return 1;
+ return 0;
+
+nla_put_failure:
+ return 1;
}
static int handle_interface_add(struct nl80211_state *state,
- char *phy, char *dev, int argc, char **argv)
+ struct nl_cb *cb,
+ struct nl_msg *msg,
+ int argc, char **argv)
{
char *name;
char *mesh_id = NULL;
enum nl80211_iftype type;
- int tpset, err = -ENOBUFS;
- struct nl_msg *msg;
+ int tpset;
- if (argc < 1) {
- fprintf(stderr, "not enough arguments\n");
- return -1;
- }
+ if (argc < 1)
+ return 1;
name = argv[0];
argc--;
argv++;
- tpset = get_if_type(&argc, &argv, &type);
- if (tpset == 0)
- fprintf(stderr, "you must specify an interface type\n");
- if (tpset <= 0)
- return -1;
+ tpset = get_if_type(&argc, &argv, &type, true);
+ if (tpset)
+ return tpset;
if (argc) {
- if (strcmp(argv[0], "mesh_id") != 0) {
- fprintf(stderr, "option %s not supported\n", argv[0]);
- return -1;
+ if (strcmp(argv[0], "mesh_id") == 0) {
+ argc--;
+ argv++;
+
+ if (!argc)
+ return 1;
+ mesh_id = argv[0];
+ argc--;
+ argv++;
+ } else if (strcmp(argv[0], "4addr") == 0) {
+ argc--;
+ argv++;
+ if (parse_4addr_flag(argv[0], msg)) {
+ fprintf(stderr, "4addr error\n");
+ return 2;
+ }
+ argc--;
+ argv++;
+ } else if (strcmp(argv[0], "flags") == 0) {
+ argc--;
+ argv++;
+ if (parse_mntr_flags(&argc, &argv, msg)) {
+ fprintf(stderr, "flags error\n");
+ return 2;
+ }
+ } else {
+ return 1;
}
- argc--;
- argv++;
-
- if (!argc) {
- fprintf(stderr, "not enough arguments\n");
- return -1;
- }
- mesh_id = argv[0];
- argc--;
- argv++;
- }
-
- if (argc) {
- fprintf(stderr, "too many arguments\n");
- return -1;
}
- msg = nlmsg_alloc();
- if (!msg) {
- fprintf(stderr, "failed to allocate netlink msg\n");
- return -1;
- }
+ if (argc)
+ return 1;
- genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0,
- 0, NL80211_CMD_NEW_INTERFACE, 0);
- if (dev)
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(dev));
- if (phy)
- return -1; /* XXX TODO */
NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, name);
- if (tpset)
- NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, type);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, type);
if (mesh_id)
NLA_PUT(msg, NL80211_ATTR_MESH_ID, strlen(mesh_id), mesh_id);
- if ((err = nl_send_auto_complete(state->nl_handle, msg)) < 0 ||
- (err = nl_wait_for_ack(state->nl_handle)) < 0) {
- nla_put_failure:
- fprintf(stderr, "failed to create interface: %d\n", err);
- nlmsg_free(msg);
- return -1;
- }
-
- nlmsg_free(msg);
-
return 0;
+ nla_put_failure:
+ return -ENOBUFS;
}
+COMMAND(interface, add, "<name> type <type> [mesh_id <meshid>] [4addr on|off] [flags <flag>*]",
+ NL80211_CMD_NEW_INTERFACE, 0, CIB_PHY, handle_interface_add,
+ "Add a new virtual interface with the given configuration.\n"
+ IFACE_TYPES "\n\n"
+ "The flags are only used for monitor interfaces, valid flags are:\n"
+ VALID_FLAGS "\n\n"
+ "The mesh_id is used only for mesh mode.");
+COMMAND(interface, add, "<name> type <type> [mesh_id <meshid>] [4addr on|off] [flags <flag>*]",
+ NL80211_CMD_NEW_INTERFACE, 0, CIB_NETDEV, handle_interface_add, NULL);
static int handle_interface_del(struct nl80211_state *state,
- char *phy, char *dev, int argc, char **argv)
+ struct nl_cb *cb,
+ struct nl_msg *msg,
+ int argc, char **argv)
{
- int err = -ENOBUFS;
- struct nl_msg *msg;
-
- if (argc) {
- fprintf(stderr, "too many arguments\n");
- return -1;
- }
-
- msg = nlmsg_alloc();
- if (!msg)
- return -1;
-
- genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0,
- 0, NL80211_CMD_DEL_INTERFACE, 0);
- if (!dev) {
- fprintf(stderr, "need device\n");
- nlmsg_free(msg);
- return -1;
- }
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(dev));
-
- if ((err = nl_send_auto_complete(state->nl_handle, msg)) < 0 ||
- (err = nl_wait_for_ack(state->nl_handle)) < 0) {
- nla_put_failure:
- fprintf(stderr, "failed to remove interface: %d\n", err);
- nlmsg_free(msg);
- return -1;
- }
-
- nlmsg_free(msg);
-
return 0;
}
+TOPLEVEL(del, NULL, NL80211_CMD_DEL_INTERFACE, 0, CIB_NETDEV, handle_interface_del,
+ "Remove this virtual interface");
+HIDDEN(interface, del, NULL, NL80211_CMD_DEL_INTERFACE, 0, CIB_NETDEV, handle_interface_del);
static int print_iface_handler(struct nl_msg *msg, void *arg)
{
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
+ unsigned int *wiphy = arg;
+ const char *indent = "";
nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
+ if (wiphy && tb_msg[NL80211_ATTR_WIPHY]) {
+ unsigned int thiswiphy = nla_get_u32(tb_msg[NL80211_ATTR_WIPHY]);
+ indent = "\t";
+ if (*wiphy != thiswiphy)
+ printf("phy#%d\n", thiswiphy);
+ *wiphy = thiswiphy;
+ }
+
if (tb_msg[NL80211_ATTR_IFNAME])
- printf("Interface %s\n", nla_get_string(tb_msg[NL80211_ATTR_IFNAME]));
+ printf("%sInterface %s\n", indent, nla_get_string(tb_msg[NL80211_ATTR_IFNAME]));
if (tb_msg[NL80211_ATTR_IFINDEX])
- printf("\tifindex %d\n", nla_get_u32(tb_msg[NL80211_ATTR_IFINDEX]));
+ printf("%s\tifindex %d\n", indent, nla_get_u32(tb_msg[NL80211_ATTR_IFINDEX]));
if (tb_msg[NL80211_ATTR_IFTYPE])
- printf("\ttype %s\n", iftype_name(nla_get_u32(tb_msg[NL80211_ATTR_IFTYPE])));
+ printf("%s\ttype %s\n", indent, iftype_name(nla_get_u32(tb_msg[NL80211_ATTR_IFTYPE])));
return NL_SKIP;
}
-static int ack_wait_handler(struct nl_msg *msg, void *arg)
+static int handle_interface_info(struct nl80211_state *state,
+ struct nl_cb *cb,
+ struct nl_msg *msg,
+ int argc, char **argv)
{
- int *finished = arg;
-
- *finished = 1;
- return NL_STOP;
+ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_iface_handler, NULL);
+ return 0;
}
+TOPLEVEL(info, NULL, NL80211_CMD_GET_INTERFACE, 0, CIB_NETDEV, handle_interface_info,
+ "Show information for this interface.");
-static int handle_interface_info(struct nl80211_state *state,
- char *phy, char *dev,
- int argc, char **argv, int flags)
+static int handle_interface_set(struct nl80211_state *state,
+ struct nl_cb *cb,
+ struct nl_msg *msg,
+ int argc, char **argv)
{
- int err = -ENOBUFS;
- struct nl_msg *msg;
- struct nl_cb *cb = NULL;
- int finished = 0;
-
- if (argc) {
- fprintf(stderr, "too many arguments\n");
- return -1;
- }
+ if (!argc)
+ return 1;
- msg = nlmsg_alloc();
- if (!msg)
- return -1;
+ NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_MONITOR);
- genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0,
- flags, NL80211_CMD_GET_INTERFACE, 0);
- if (!dev) {
- fprintf(stderr, "need device\n");
- nlmsg_free(msg);
- return -1;
+ switch (parse_mntr_flags(&argc, &argv, msg)) {
+ case 0:
+ return 0;
+ case -ENOMEM:
+ fprintf(stderr, "failed to allocate flags\n");
+ return 2;
+ case -EINVAL:
+ fprintf(stderr, "unknown flag %s\n", *argv);
+ return 2;
+ default:
+ return 2;
}
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(dev));
-
- cb = nl_cb_alloc(NL_CB_CUSTOM);
- if (!cb)
- goto out;
+ nla_put_failure:
+ return -ENOBUFS;
+}
+COMMAND(set, monitor, "<flag>*",
+ NL80211_CMD_SET_INTERFACE, 0, CIB_NETDEV, handle_interface_set,
+ "Set monitor flags. Valid flags are:\n"
+ VALID_FLAGS);
+
+static int handle_interface_meshid(struct nl80211_state *state,
+ struct nl_cb *cb,
+ struct nl_msg *msg,
+ int argc, char **argv)
+{
+ char *mesh_id = NULL;
- if (nl_send_auto_complete(state->nl_handle, msg) < 0)
- goto out;
+ if (argc != 1)
+ return 1;
- nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_iface_handler, NULL);
- nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_wait_handler, &finished);
+ mesh_id = argv[0];
- err = nl_recvmsgs(state->nl_handle, cb);
+ NLA_PUT(msg, NL80211_ATTR_MESH_ID, strlen(mesh_id), mesh_id);
- if (!finished)
- err = nl_wait_for_ack(state->nl_handle);
+ return 0;
+ nla_put_failure:
+ return -ENOBUFS;
+}
+COMMAND(set, meshid, "<meshid>",
+ NL80211_CMD_SET_INTERFACE, 0, CIB_NETDEV, handle_interface_meshid, NULL);
- if (err)
- fprintf(stderr, "failed to get information: %d\n", err);
+static unsigned int dev_dump_wiphy;
- out:
- nla_put_failure:
- nlmsg_free(msg);
- nl_cb_put(cb);
+static int handle_dev_dump(struct nl80211_state *state,
+ struct nl_cb *cb,
+ struct nl_msg *msg,
+ int argc, char **argv)
+{
+ dev_dump_wiphy = -1;
+ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_iface_handler, &dev_dump_wiphy);
return 0;
}
+TOPLEVEL(dev, NULL, NL80211_CMD_GET_INTERFACE, NLM_F_DUMP, CIB_NONE, handle_dev_dump,
+ "List all network interfaces for wireless hardware.");
-int handle_interface(struct nl80211_state *state,
- char *phy, char *dev, int argc, char **argv)
+static int handle_interface_type(struct nl80211_state *state,
+ struct nl_cb *cb,
+ struct nl_msg *msg,
+ int argc, char **argv)
{
- char *cmd = argv[0];
+ enum nl80211_iftype type;
+ int tpset;
- if (argc < 1) {
- fprintf(stderr, "you must specify an interface command\n");
- return -1;
- }
+ tpset = get_if_type(&argc, &argv, &type, false);
+ if (tpset)
+ return tpset;
- argc--;
- argv++;
+ if (argc)
+ return 1;
- if (strcmp(cmd, "add") == 0)
- return handle_interface_add(state, phy, dev, argc, argv);
- else if (strcmp(cmd, "del") == 0)
- return handle_interface_del(state, phy, dev, argc, argv);
- else if (strcmp(cmd, "get") == 0)
- return handle_interface_info(state, phy, dev, argc, argv, 0);
- else if (strcmp(cmd, "dump") == 0)
- return handle_interface_info(state, phy, dev, argc, argv, NLM_F_DUMP);
-
- printf("invalid interface command %s\n", cmd);
- return -1;
+ NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, type);
+
+ return 0;
+ nla_put_failure:
+ return -ENOBUFS;
}
+COMMAND(set, type, "<type>",
+ NL80211_CMD_SET_INTERFACE, 0, CIB_NETDEV, handle_interface_type,
+ "Set interface type/mode.\n"
+ IFACE_TYPES);
projects / thirdparty / iw.git / blobdiff