| Message ID | 20180714163601.18074-1-aring@mojatatu.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Headers | show |
Hello. On 07/14/2018 06:36 PM, Alexander Aring wrote: > This patch adds initial support for wpan-hwsim utility to control the > mac802154_hwsim driver over netlink. > > Signed-off-by: Alexander Aring <aring@mojatatu.com> > --- > Makefile.am | 1 + > configure.ac | 1 + > wpan-hwsim/Makefile.am | 8 + > wpan-hwsim/mac802154_hwsim.h | 73 +++++++ > wpan-hwsim/wpan-hwsim.c | 510 +++++++++++++++++++++++++++++++++++++++++++ > 5 files changed, 593 insertions(+) > create mode 100644 wpan-hwsim/Makefile.am > create mode 100644 wpan-hwsim/mac802154_hwsim.h > create mode 100644 wpan-hwsim/wpan-hwsim.c > > diff --git a/Makefile.am b/Makefile.am > index 37f18b6..3f15825 100644 > --- a/Makefile.am > +++ b/Makefile.am > @@ -21,4 +21,5 @@ AM_LDFLAGS = \ > SUBDIRS = \ > src \ > wpan-ping \ > + wpan-hwsim \ > examples > diff --git a/configure.ac b/configure.ac > index 5dd59dc..a983532 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -56,6 +56,7 @@ AC_CONFIG_FILES([ > Makefile > src/Makefile > wpan-ping/Makefile > + wpan-hwsim/Makefile > examples/Makefile > ]) > > diff --git a/wpan-hwsim/Makefile.am b/wpan-hwsim/Makefile.am > new file mode 100644 > index 0000000..f688cd9 > --- /dev/null > +++ b/wpan-hwsim/Makefile.am > @@ -0,0 +1,8 @@ > +bin_PROGRAMS = wpan-hwsim > + > +wpan_hwsim_SOURCES = wpan-hwsim.c > + > +wpan_hwsim_CFLAGS = $(AM_CFLAGS) $(LIBNL3_CFLAGS) > +wpan_hwsim_LDADD = $(LIBNL3_LIBS) > + > +EXTRA_DIST = README.wpan-hwsim > diff --git a/wpan-hwsim/mac802154_hwsim.h b/wpan-hwsim/mac802154_hwsim.h > new file mode 100644 > index 0000000..6c6e30e > --- /dev/null > +++ b/wpan-hwsim/mac802154_hwsim.h > @@ -0,0 +1,73 @@ > +#ifndef __MAC802154_HWSIM_H > +#define __MAC802154_HWSIM_H > + > +/* mac802154 hwsim netlink commands > + * > + * @MAC802154_HWSIM_CMD_UNSPEC: unspecified command to catch error > + * @MAC802154_HWSIM_CMD_GET_RADIO: fetch information about existing radios > + * @MAC802154_HWSIM_CMD_SET_RADIO: change radio parameters during runtime > + * @MAC802154_HWSIM_CMD_NEW_RADIO: create a new radio with the given parameters > + * returns the radio ID (>= 0) or negative on errors, if successful > + * then multicast the result > + * @MAC802154_HWSIM_CMD_DEL_RADIO: destroy a radio, reply is multicasted > + * @MAC802154_HWSIM_CMD_GET_EDGE: fetch information about existing edges > + * @MAC802154_HWSIM_CMD_SET_EDGE: change edge parameters during runtime > + * @MAC802154_HWSIM_CMD_DEL_EDGE: delete edges between radios > + * @MAC802154_HWSIM_CMD_NEW_EDGE: create a new edge between two radios > + * @__MAC802154_HWSIM_CMD_MAX: enum limit > + */ > +enum { > + MAC802154_HWSIM_CMD_UNSPEC, > + > + MAC802154_HWSIM_CMD_GET_RADIO, > + MAC802154_HWSIM_CMD_SET_RADIO, > + MAC802154_HWSIM_CMD_NEW_RADIO, > + MAC802154_HWSIM_CMD_DEL_RADIO, > + > + MAC802154_HWSIM_CMD_GET_EDGE, > + MAC802154_HWSIM_CMD_SET_EDGE, > + MAC802154_HWSIM_CMD_DEL_EDGE, > + MAC802154_HWSIM_CMD_NEW_EDGE, > + > + __MAC802154_HWSIM_CMD_MAX, > +}; > + > +#define MAC802154_HWSIM_CMD_MAX (__MAC802154_HWSIM_MAX - 1) > + > +/* mac802154 hwsim netlink attributes > + * > + * @MAC802154_HWSIM_ATTR_UNSPEC: unspecified attribute to catch error > + * @MAC802154_HWSIM_ATTR_RADIO_ID: u32 attribute to identify the radio > + * @MAC802154_HWSIM_ATTR_EDGE: nested attribute of edges > + * @MAC802154_HWSIM_ATTR_EDGES: list if nested attributes which contains the > + * edge information according the radio id > + * @__MAC802154_HWSIM_ATTR_MAX: enum limit > + */ > +enum { > + MAC802154_HWSIM_ATTR_UNSPEC, > + MAC802154_HWSIM_ATTR_RADIO_ID, > + MAC802154_HWSIM_ATTR_RADIO_EDGE, > + MAC802154_HWSIM_ATTR_RADIO_EDGES, > + __MAC802154_HWSIM_ATTR_MAX, > +}; > + > +#define MAC802154_HWSIM_ATTR_MAX (__MAC802154_HWSIM_ATTR_MAX - 1) > + > +/* mac802154 hwsim edge netlink attributes > + * > + * @MAC802154_HWSIM_EDGE_ATTR_UNSPEC: unspecified attribute to catch error > + * @MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID: radio id where the edge points to > + * @MAC802154_HWSIM_EDGE_ATTR_LQI: LQI value which the endpoint radio will > + * receive for this edge > + * @__MAC802154_HWSIM_ATTR_MAX: enum limit > + */ > +enum { > + MAC802154_HWSIM_EDGE_ATTR_UNSPEC, > + MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID, > + MAC802154_HWSIM_EDGE_ATTR_LQI, > + __MAC802154_HWSIM_EDGE_ATTR_MAX, > +}; > + > +#define MAC802154_HWSIM_EDGE_ATTR_MAX (__MAC802154_HWSIM_EDGE_ATTR_MAX - 1) > + > +#endif /* __MAC802154_HWSIM_H */ > diff --git a/wpan-hwsim/wpan-hwsim.c b/wpan-hwsim/wpan-hwsim.c > new file mode 100644 > index 0000000..f4ecf10 > --- /dev/null > +++ b/wpan-hwsim/wpan-hwsim.c > @@ -0,0 +1,510 @@ > +/* > + * Linux IEEE 802.15.4 hwsim tool > + * > + * Copyright (C) 2018 Alexander Aring <aring@mojatatu.com> > + * > + * Permission to use, copy, modify, and/or distribute this software for any > + * purpose with or without fee is hereby granted, provided that the above > + * copyright notice and this permission notice appear in all copies. > + * > + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES > + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF > + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR > + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES > + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN > + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF > + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. > + */ > + > +#include <inttypes.h> > +#include <stdbool.h> > +#include <getopt.h> > +#include <stdint.h> > +#include <limits.h> > +#include <errno.h> > +#include <stdio.h> > + > +#include <netlink/netlink.h> > + > +#include <netlink/genl/genl.h> > +#include <netlink/genl/family.h> > +#include <netlink/genl/ctrl.h> > + > +#include "mac802154_hwsim.h" > +#include "config.h" > + > +static struct nl_sock *nl_sock; > +static int nlhwsim_id; > + > +static int nlhwsim_init(void) > +{ > + int err; > + > + nl_sock = nl_socket_alloc(); > + if (!nl_sock) { > + fprintf(stderr, "Failed to allocate netlink socket.\n"); > + return -ENOMEM; > + } > + > + nl_socket_set_buffer_size(nl_sock, 8192, 8192); > + > + if (genl_connect(nl_sock)) { > + fprintf(stderr, "Failed to connect to generic netlink.\n"); > + err = -ENOLINK; > + goto out_handle_destroy; > + } > + > + nlhwsim_id = genl_ctrl_resolve(nl_sock, "MAC802154_HWSIM"); > + if (nlhwsim_id < 0) { > + fprintf(stderr, "MAC802154_HWSIM not found.\n"); > + err = -ENOENT; > + nl_close(nl_sock); > + goto out_handle_destroy; > + } > + > + return 0; > + > +out_handle_destroy: > + nl_socket_free(nl_sock); > + return err; > +} > + > +static void nlhwsim_cleanup(void) > +{ > + nl_close(nl_sock); > + nl_socket_free(nl_sock); > +} > + > +static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, > + void *arg) > +{ > + int *ret = arg; > + *ret = err->error; > + return NL_STOP; > +} > + > +static int hwsim_create(void) > +{ > + struct nl_msg *msg; > + struct nl_cb *cb; > + int idx = 0, ret; > + > + cb = nl_cb_alloc(NL_CB_DEFAULT); > + if (!cb) > + return -ENOMEM; > + > + msg = nlmsg_alloc(); > + if (!msg) { > + nl_cb_put(cb); > + return -ENOMEM; > + } > + > + genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, nlhwsim_id, 0, 0, > + MAC802154_HWSIM_CMD_NEW_RADIO, 0); > + ret = nl_send_auto(nl_sock, msg); > + if (ret < 0) { > + nl_cb_put(cb); > + return ret; > + } > + > + nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &idx); > + nl_recvmsgs(nl_sock, cb); > + printf("wpan_hwsim radio%d registered.\n", idx); > + > + nl_cb_put(cb); > + > + return 0; > +} > + > +static int nl_msg_dot_cb(struct nl_msg* msg, void* arg) > +{ > + static struct nla_policy edge_policy[MAC802154_HWSIM_EDGE_ATTR_MAX + 1] = { > + [MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID] = { .type = NLA_U32 }, > + [MAC802154_HWSIM_EDGE_ATTR_LQI] = { .type = NLA_U8 }, > + }; > + struct nlmsghdr *nlh = nlmsg_hdr(msg); > + struct genlmsghdr *gnlh = (struct genlmsghdr*) nlmsg_data(nlh); > + struct nlattr *attrs[MAC802154_HWSIM_ATTR_MAX + 1]; > + struct nlattr *edge[MAC802154_HWSIM_EDGE_ATTR_MAX + 1]; > + unsigned int *ignore_idx = arg; > + struct nlattr *nl_edge; > + uint32_t idx, idx2; > + uint8_t lqi = 0xff; > + int rem_edge; > + int rc; > + > + nla_parse(attrs, MAC802154_HWSIM_ATTR_MAX, genlmsg_attrdata(gnlh, 0), > + genlmsg_attrlen(gnlh, 0), NULL); > + > + if (!attrs[MAC802154_HWSIM_ATTR_RADIO_ID]) > + return NL_SKIP; > + > + idx = nla_get_u32(attrs[MAC802154_HWSIM_ATTR_RADIO_ID]); > + if (idx == *ignore_idx) > + return NL_SKIP; > + > + if (!attrs[MAC802154_HWSIM_ATTR_RADIO_EDGES]) > + return NL_SKIP; > + > + nla_for_each_nested(nl_edge, attrs[MAC802154_HWSIM_ATTR_RADIO_EDGES], > + rem_edge) { > + rc = nla_parse_nested(edge, MAC802154_HWSIM_EDGE_ATTR_MAX, > + nl_edge, edge_policy); > + if (rc) > + return NL_SKIP; > + > + idx2 = nla_get_u32(edge[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID]); > + if (idx2 == *ignore_idx) > + continue; > + > + lqi = nla_get_u32(edge[MAC802154_HWSIM_EDGE_ATTR_LQI]); > + printf("\t%" PRIu32 " -> %" PRIu32 "[label=%" PRIu8 "];\n", > + idx, idx2, lqi); > + } > + > + return NL_SKIP; > +} > + > +static int nl_msg_cb(struct nl_msg* msg, void* arg) > +{ > + static struct nla_policy edge_policy[MAC802154_HWSIM_EDGE_ATTR_MAX + 1] = { > + [MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID] = { .type = NLA_U32 }, > + [MAC802154_HWSIM_EDGE_ATTR_LQI] = { .type = NLA_U8 }, > + }; > + struct nlmsghdr *nlh = nlmsg_hdr(msg); > + struct genlmsghdr *gnlh = (struct genlmsghdr*) nlmsg_data(nlh); > + struct nlattr *attrs[MAC802154_HWSIM_ATTR_MAX + 1]; > + struct nlattr *edge[MAC802154_HWSIM_EDGE_ATTR_MAX + 1]; > + unsigned int *ignore_idx = arg; > + struct nlattr *nl_edge; > + uint32_t idx; > + uint8_t lqi; > + int rem_edge; > + int rc; > + > + nla_parse(attrs, MAC802154_HWSIM_ATTR_MAX, genlmsg_attrdata(gnlh, 0), > + genlmsg_attrlen(gnlh, 0), NULL); > + > + if (!attrs[MAC802154_HWSIM_ATTR_RADIO_ID]) > + return NL_SKIP; > + > + idx = nla_get_u32(attrs[MAC802154_HWSIM_ATTR_RADIO_ID]); > + > + if (idx == *ignore_idx) > + return NL_SKIP; > + > + printf("wpan_hwsim radio%" PRIu32 ":\n", idx); > + > + if (!attrs[MAC802154_HWSIM_ATTR_RADIO_EDGES]) > + return NL_SKIP; > + > + nla_for_each_nested(nl_edge, attrs[MAC802154_HWSIM_ATTR_RADIO_EDGES], > + rem_edge) { > + rc = nla_parse_nested(edge, MAC802154_HWSIM_EDGE_ATTR_MAX, > + nl_edge, edge_policy); > + if (rc) > + return NL_SKIP; > + > + idx = nla_get_u32(edge[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID]); > + > + if (idx == *ignore_idx) > + continue; > + > + printf("\tedge:\n"); > + printf("\t\tradio%" PRIu32 "\n", idx); > + lqi = nla_get_u32(edge[MAC802154_HWSIM_EDGE_ATTR_LQI]); > + printf("\t\tlqi: 0x%02x\n", lqi); > + } > + > + return NL_SKIP; > +} > + > +static int hwsim_dump(bool dot, int unsigned ignore_idx) > +{ > + struct nl_msg *msg; > + int rc; > + > + nl_socket_modify_cb(nl_sock, NL_CB_VALID, NL_CB_CUSTOM, > + dot ? nl_msg_dot_cb : nl_msg_cb, &ignore_idx); > + msg = nlmsg_alloc(); > + if (!msg) > + return -ENOMEM; > + > + genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, nlhwsim_id, 0, NLM_F_DUMP, > + MAC802154_HWSIM_CMD_GET_RADIO, 0); > + > + if (dot) > + printf("digraph {\n"); > + > + rc = nl_send_sync(nl_sock, msg); > + if (rc < 0) > + return rc; > + > + if (dot) > + printf("}\n"); > + > + return rc; > +} > + > +static int hwsim_del(uint32_t idx) > +{ > + struct nl_msg *msg; > + struct nl_cb *cb; > + int err = 0; > + int rc; > + > + cb = nl_cb_alloc(NL_CB_DEFAULT); > + if (!cb) > + return -ENOMEM; > + > + msg = nlmsg_alloc(); > + if (!msg) { > + nl_cb_put(cb); > + return -ENOMEM; > + } > + > + genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, nlhwsim_id, 0, 0, > + MAC802154_HWSIM_CMD_DEL_RADIO, 0); > + nla_put_u32(msg, MAC802154_HWSIM_ATTR_RADIO_ID, idx); > + > + nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); > + rc = nl_send_auto(nl_sock, msg); > + nl_recvmsgs(nl_sock, cb); > + if (err < 0) > + fprintf(stderr, "Failed to remove radio: %s\n", strerror(abs(err))); > + nl_cb_put(cb); > + > + return rc; > +} > + > +static int hwsim_cmd_edge(int cmd, uint32_t idx, uint32_t idx2, uint8_t lqi) > +{ > + struct nlattr* edge; > + struct nl_msg *msg; > + struct nl_cb *cb; > + int err = 0; > + int rc; > + > + cb = nl_cb_alloc(NL_CB_DEFAULT); > + if (!cb) > + return -ENOMEM; > + > + msg = nlmsg_alloc(); > + if (!msg) { > + nl_cb_put(cb); > + return -ENOMEM; > + } > + > + genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, nlhwsim_id, 0, 0, > + cmd, 0); > + nla_put_u32(msg, MAC802154_HWSIM_ATTR_RADIO_ID, idx); > + > + edge = nla_nest_start(msg, MAC802154_HWSIM_ATTR_RADIO_EDGE); > + if (!edge) { > + nl_cb_put(cb); > + return -ENOMEM; > + } > + > + nla_put_u32(msg, MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID, idx2); > + if (cmd == MAC802154_HWSIM_CMD_SET_EDGE) > + nla_put_u8(msg, MAC802154_HWSIM_EDGE_ATTR_LQI, lqi); > + > + nla_nest_end(msg, edge); > + > + nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); > + rc = nl_send_auto(nl_sock, msg); > + nl_recvmsgs(nl_sock, cb); > + if (err < 0) > + fprintf(stderr, "Failed to add or remove edge: %s\n", strerror(abs(err))); > + nl_cb_put(cb); > + > + return rc; > +} > + > +static int hwsim_do_cmd(uint32_t cmd, unsigned int idx, unsigned int idx2, > + uint8_t lqi, bool dot, unsigned int ignore_idx) > +{ > + int rc; > + > + rc = nlhwsim_init(); > + if (rc) > + return 1; > + > + switch (cmd) { > + case MAC802154_HWSIM_CMD_GET_RADIO: > + rc = hwsim_dump(dot, ignore_idx); > + break; > + case MAC802154_HWSIM_CMD_DEL_RADIO: > + rc = hwsim_del(idx); > + break; > + case MAC802154_HWSIM_CMD_NEW_RADIO: > + rc = hwsim_create(); > + break; > + case MAC802154_HWSIM_CMD_NEW_EDGE: > + case MAC802154_HWSIM_CMD_DEL_EDGE: > + case MAC802154_HWSIM_CMD_SET_EDGE: > + rc = hwsim_cmd_edge(cmd, idx, idx2, lqi); > + break; > + default: > + rc = -EINVAL; > + break; > + } > + > + nlhwsim_cleanup(); > + > + return rc; > +} > + > +static void print_usage(void) > +{ > + printf("wpan_hwsim [OPTION...] [CMD...]\n"); > + printf("\n"); > + printf(" possible options:\n"); > + printf(" -h, --help show this help\n"); > + printf(" -v, --version show version\n"); > + printf(" -d, --dot dump topology as dot format\n"); > + printf(" -i, --ignore filter one node from dump (useful for virtual monitors)\n"); > + printf("\n"); > + printf(" possible commands:\n"); > + printf(" add add new hwsim radio\n"); > + printf(" del IDX del hwsim radio according idx\n"); > + printf(" edge add IDX IDX add edge between radios\n"); > + printf(" edge del IDX IDX delete edge between radios\n"); > + printf(" edge lqi IDX IDX LQI set lqi value for a specific edge\n"); > + printf("\n"); > + printf(" To dump all node information just call this program without any command\n"); > +} > + > +static void print_version(void) > +{ > + printf(PACKAGE_VERSION "\n"); Maybe the tool name as well? printf("wpan-hwsim " PACKAGE_VERSION "\n"); > +} > + > +int main(int argc, const char *argv[]) > +{ > + unsigned long int idx, idx2, lqi, ignore_idx = ULONG_MAX; > + bool dot = false; > + int cmd; > + int rc; > + int c; > + > + while (1) { > + int option_index = 0; > + static struct option long_options[] = { > + {"help", required_argument, 0, 'h' }, > + {"version", required_argument, 0, 'v' }, help and version both do not need an argument, please use no_argument for these two. > + {"dot", required_argument, 0, 'd' }, > + {"ignore", required_argument, 0, 'i' }, > + {0, 0, 0, 0 } > + }; > + > + c = getopt_long(argc, (char **)argv, "vhdi:", > + long_options, &option_index); > + if (c == -1) > + break; > + > + switch (c) { > + case 'v': > + print_version(); > + return EXIT_SUCCESS; > + case 'h': > + print_usage(); > + return EXIT_SUCCESS; > + case 'd': > + dot = true; > + break; > + case 'i': > + ignore_idx = strtoul(optarg, NULL, 0); > + if (ignore_idx == ULONG_MAX) { > + fprintf(stderr, "Invalid radio index for ignore argument\n"); > + return EXIT_FAILURE; > + } > + break; > + default: > + print_usage(); > + return EXIT_FAILURE; > + } > + } > + > + if (optind + 1 > argc) { > + rc = hwsim_do_cmd(MAC802154_HWSIM_CMD_GET_RADIO, 0, 0, 0, dot, > + ignore_idx); > + if (rc < 0) > + return EXIT_FAILURE; > + else > + goto out; > + } > + > + if (!strncmp(argv[optind], "add", 3)) { > + rc = hwsim_do_cmd(MAC802154_HWSIM_CMD_NEW_RADIO, 0, 0, 0, 0, 0); > + if (rc < 0) > + return EXIT_FAILURE; > + } else if (!strncmp(argv[optind], "del", 3)) { > + if (optind + 2 > argc) { > + fprintf(stderr, "Missing radio index for delete\n"); > + return EXIT_FAILURE; > + } else { > + idx = strtoul(argv[optind + 1], NULL, 0); > + if (idx == ULONG_MAX) { > + fprintf(stderr, "Invalid radio index for delete\n"); > + return EXIT_FAILURE; > + } > + > + rc = hwsim_do_cmd(MAC802154_HWSIM_CMD_DEL_RADIO, idx, 0, 0, 0, 0); > + if (rc < 0) > + return EXIT_FAILURE; > + } > + } else if (!strncmp(argv[optind], "edge", 4)) { > + if (optind + 4 > argc) { > + fprintf(stderr, "Missing edge radio index information\n"); > + return EXIT_FAILURE; > + } else { > + if (!strncmp(argv[optind + 1], "add", 3)) { > + cmd = MAC802154_HWSIM_CMD_NEW_EDGE; > + } else if (!strncmp(argv[optind + 1], "del", 3)) { > + cmd = MAC802154_HWSIM_CMD_DEL_EDGE; > + } else if (!strncmp(argv[optind + 1], "lqi", 3)) { > + cmd = MAC802154_HWSIM_CMD_SET_EDGE; > + } else { > + fprintf(stderr, "Invalid edge command\n"); > + return EXIT_FAILURE; > + } > + > + if (cmd == MAC802154_HWSIM_CMD_SET_EDGE) { > + if (optind + 5 > argc) { > + fprintf(stderr, "LQI information missing\n"); > + return EXIT_FAILURE; > + } > + > + lqi = strtoul(argv[optind + 4], NULL, 0); > + if (lqi == ULONG_MAX || lqi > 0xff) { > + fprintf(stderr, "Invalid lqi value\n"); > + return EXIT_FAILURE; > + } > + } > + > + idx = strtoul(argv[optind + 2], NULL, 0); > + if (idx == ULONG_MAX) { > + fprintf(stderr, "Invalid first radio index for edge command\n"); > + return EXIT_FAILURE; > + } > + > + idx2 = strtoul(argv[optind + 3], NULL, 0); > + if (idx2 == ULONG_MAX) { > + fprintf(stderr, "Invalid second radio index for edge command\n"); > + return EXIT_FAILURE; > + } > + > + rc = hwsim_do_cmd(cmd, idx, idx2, lqi, 0, 0); > + if (rc < 0) > + return EXIT_FAILURE; > + } > + } else { > + fprintf(stderr, "Unknown command\n"); > + print_usage(); > + return EXIT_FAILURE; > + } > + > +out: > + return EXIT_SUCCESS; > +} > Rest looks good to me. regards Stefan Schmidt -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Makefile.am b/Makefile.am index 37f18b6..3f15825 100644 --- a/Makefile.am +++ b/Makefile.am @@ -21,4 +21,5 @@ AM_LDFLAGS = \ SUBDIRS = \ src \ wpan-ping \ + wpan-hwsim \ examples diff --git a/configure.ac b/configure.ac index 5dd59dc..a983532 100644 --- a/configure.ac +++ b/configure.ac @@ -56,6 +56,7 @@ AC_CONFIG_FILES([ Makefile src/Makefile wpan-ping/Makefile + wpan-hwsim/Makefile examples/Makefile ]) diff --git a/wpan-hwsim/Makefile.am b/wpan-hwsim/Makefile.am new file mode 100644 index 0000000..f688cd9 --- /dev/null +++ b/wpan-hwsim/Makefile.am @@ -0,0 +1,8 @@ +bin_PROGRAMS = wpan-hwsim + +wpan_hwsim_SOURCES = wpan-hwsim.c + +wpan_hwsim_CFLAGS = $(AM_CFLAGS) $(LIBNL3_CFLAGS) +wpan_hwsim_LDADD = $(LIBNL3_LIBS) + +EXTRA_DIST = README.wpan-hwsim diff --git a/wpan-hwsim/mac802154_hwsim.h b/wpan-hwsim/mac802154_hwsim.h new file mode 100644 index 0000000..6c6e30e --- /dev/null +++ b/wpan-hwsim/mac802154_hwsim.h @@ -0,0 +1,73 @@ +#ifndef __MAC802154_HWSIM_H +#define __MAC802154_HWSIM_H + +/* mac802154 hwsim netlink commands + * + * @MAC802154_HWSIM_CMD_UNSPEC: unspecified command to catch error + * @MAC802154_HWSIM_CMD_GET_RADIO: fetch information about existing radios + * @MAC802154_HWSIM_CMD_SET_RADIO: change radio parameters during runtime + * @MAC802154_HWSIM_CMD_NEW_RADIO: create a new radio with the given parameters + * returns the radio ID (>= 0) or negative on errors, if successful + * then multicast the result + * @MAC802154_HWSIM_CMD_DEL_RADIO: destroy a radio, reply is multicasted + * @MAC802154_HWSIM_CMD_GET_EDGE: fetch information about existing edges + * @MAC802154_HWSIM_CMD_SET_EDGE: change edge parameters during runtime + * @MAC802154_HWSIM_CMD_DEL_EDGE: delete edges between radios + * @MAC802154_HWSIM_CMD_NEW_EDGE: create a new edge between two radios + * @__MAC802154_HWSIM_CMD_MAX: enum limit + */ +enum { + MAC802154_HWSIM_CMD_UNSPEC, + + MAC802154_HWSIM_CMD_GET_RADIO, + MAC802154_HWSIM_CMD_SET_RADIO, + MAC802154_HWSIM_CMD_NEW_RADIO, + MAC802154_HWSIM_CMD_DEL_RADIO, + + MAC802154_HWSIM_CMD_GET_EDGE, + MAC802154_HWSIM_CMD_SET_EDGE, + MAC802154_HWSIM_CMD_DEL_EDGE, + MAC802154_HWSIM_CMD_NEW_EDGE, + + __MAC802154_HWSIM_CMD_MAX, +}; + +#define MAC802154_HWSIM_CMD_MAX (__MAC802154_HWSIM_MAX - 1) + +/* mac802154 hwsim netlink attributes + * + * @MAC802154_HWSIM_ATTR_UNSPEC: unspecified attribute to catch error + * @MAC802154_HWSIM_ATTR_RADIO_ID: u32 attribute to identify the radio + * @MAC802154_HWSIM_ATTR_EDGE: nested attribute of edges + * @MAC802154_HWSIM_ATTR_EDGES: list if nested attributes which contains the + * edge information according the radio id + * @__MAC802154_HWSIM_ATTR_MAX: enum limit + */ +enum { + MAC802154_HWSIM_ATTR_UNSPEC, + MAC802154_HWSIM_ATTR_RADIO_ID, + MAC802154_HWSIM_ATTR_RADIO_EDGE, + MAC802154_HWSIM_ATTR_RADIO_EDGES, + __MAC802154_HWSIM_ATTR_MAX, +}; + +#define MAC802154_HWSIM_ATTR_MAX (__MAC802154_HWSIM_ATTR_MAX - 1) + +/* mac802154 hwsim edge netlink attributes + * + * @MAC802154_HWSIM_EDGE_ATTR_UNSPEC: unspecified attribute to catch error + * @MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID: radio id where the edge points to + * @MAC802154_HWSIM_EDGE_ATTR_LQI: LQI value which the endpoint radio will + * receive for this edge + * @__MAC802154_HWSIM_ATTR_MAX: enum limit + */ +enum { + MAC802154_HWSIM_EDGE_ATTR_UNSPEC, + MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID, + MAC802154_HWSIM_EDGE_ATTR_LQI, + __MAC802154_HWSIM_EDGE_ATTR_MAX, +}; + +#define MAC802154_HWSIM_EDGE_ATTR_MAX (__MAC802154_HWSIM_EDGE_ATTR_MAX - 1) + +#endif /* __MAC802154_HWSIM_H */ diff --git a/wpan-hwsim/wpan-hwsim.c b/wpan-hwsim/wpan-hwsim.c new file mode 100644 index 0000000..f4ecf10 --- /dev/null +++ b/wpan-hwsim/wpan-hwsim.c @@ -0,0 +1,510 @@ +/* + * Linux IEEE 802.15.4 hwsim tool + * + * Copyright (C) 2018 Alexander Aring <aring@mojatatu.com> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <inttypes.h> +#include <stdbool.h> +#include <getopt.h> +#include <stdint.h> +#include <limits.h> +#include <errno.h> +#include <stdio.h> + +#include <netlink/netlink.h> + +#include <netlink/genl/genl.h> +#include <netlink/genl/family.h> +#include <netlink/genl/ctrl.h> + +#include "mac802154_hwsim.h" +#include "config.h" + +static struct nl_sock *nl_sock; +static int nlhwsim_id; + +static int nlhwsim_init(void) +{ + int err; + + nl_sock = nl_socket_alloc(); + if (!nl_sock) { + fprintf(stderr, "Failed to allocate netlink socket.\n"); + return -ENOMEM; + } + + nl_socket_set_buffer_size(nl_sock, 8192, 8192); + + if (genl_connect(nl_sock)) { + fprintf(stderr, "Failed to connect to generic netlink.\n"); + err = -ENOLINK; + goto out_handle_destroy; + } + + nlhwsim_id = genl_ctrl_resolve(nl_sock, "MAC802154_HWSIM"); + if (nlhwsim_id < 0) { + fprintf(stderr, "MAC802154_HWSIM not found.\n"); + err = -ENOENT; + nl_close(nl_sock); + goto out_handle_destroy; + } + + return 0; + +out_handle_destroy: + nl_socket_free(nl_sock); + return err; +} + +static void nlhwsim_cleanup(void) +{ + nl_close(nl_sock); + nl_socket_free(nl_sock); +} + +static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, + void *arg) +{ + int *ret = arg; + *ret = err->error; + return NL_STOP; +} + +static int hwsim_create(void) +{ + struct nl_msg *msg; + struct nl_cb *cb; + int idx = 0, ret; + + cb = nl_cb_alloc(NL_CB_DEFAULT); + if (!cb) + return -ENOMEM; + + msg = nlmsg_alloc(); + if (!msg) { + nl_cb_put(cb); + return -ENOMEM; + } + + genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, nlhwsim_id, 0, 0, + MAC802154_HWSIM_CMD_NEW_RADIO, 0); + ret = nl_send_auto(nl_sock, msg); + if (ret < 0) { + nl_cb_put(cb); + return ret; + } + + nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &idx); + nl_recvmsgs(nl_sock, cb); + printf("wpan_hwsim radio%d registered.\n", idx); + + nl_cb_put(cb); + + return 0; +} + +static int nl_msg_dot_cb(struct nl_msg* msg, void* arg) +{ + static struct nla_policy edge_policy[MAC802154_HWSIM_EDGE_ATTR_MAX + 1] = { + [MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID] = { .type = NLA_U32 }, + [MAC802154_HWSIM_EDGE_ATTR_LQI] = { .type = NLA_U8 }, + }; + struct nlmsghdr *nlh = nlmsg_hdr(msg); + struct genlmsghdr *gnlh = (struct genlmsghdr*) nlmsg_data(nlh); + struct nlattr *attrs[MAC802154_HWSIM_ATTR_MAX + 1]; + struct nlattr *edge[MAC802154_HWSIM_EDGE_ATTR_MAX + 1]; + unsigned int *ignore_idx = arg; + struct nlattr *nl_edge; + uint32_t idx, idx2; + uint8_t lqi = 0xff; + int rem_edge; + int rc; + + nla_parse(attrs, MAC802154_HWSIM_ATTR_MAX, genlmsg_attrdata(gnlh, 0), + genlmsg_attrlen(gnlh, 0), NULL); + + if (!attrs[MAC802154_HWSIM_ATTR_RADIO_ID]) + return NL_SKIP; + + idx = nla_get_u32(attrs[MAC802154_HWSIM_ATTR_RADIO_ID]); + if (idx == *ignore_idx) + return NL_SKIP; + + if (!attrs[MAC802154_HWSIM_ATTR_RADIO_EDGES]) + return NL_SKIP; + + nla_for_each_nested(nl_edge, attrs[MAC802154_HWSIM_ATTR_RADIO_EDGES], + rem_edge) { + rc = nla_parse_nested(edge, MAC802154_HWSIM_EDGE_ATTR_MAX, + nl_edge, edge_policy); + if (rc) + return NL_SKIP; + + idx2 = nla_get_u32(edge[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID]); + if (idx2 == *ignore_idx) + continue; + + lqi = nla_get_u32(edge[MAC802154_HWSIM_EDGE_ATTR_LQI]); + printf("\t%" PRIu32 " -> %" PRIu32 "[label=%" PRIu8 "];\n", + idx, idx2, lqi); + } + + return NL_SKIP; +} + +static int nl_msg_cb(struct nl_msg* msg, void* arg) +{ + static struct nla_policy edge_policy[MAC802154_HWSIM_EDGE_ATTR_MAX + 1] = { + [MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID] = { .type = NLA_U32 }, + [MAC802154_HWSIM_EDGE_ATTR_LQI] = { .type = NLA_U8 }, + }; + struct nlmsghdr *nlh = nlmsg_hdr(msg); + struct genlmsghdr *gnlh = (struct genlmsghdr*) nlmsg_data(nlh); + struct nlattr *attrs[MAC802154_HWSIM_ATTR_MAX + 1]; + struct nlattr *edge[MAC802154_HWSIM_EDGE_ATTR_MAX + 1]; + unsigned int *ignore_idx = arg; + struct nlattr *nl_edge; + uint32_t idx; + uint8_t lqi; + int rem_edge; + int rc; + + nla_parse(attrs, MAC802154_HWSIM_ATTR_MAX, genlmsg_attrdata(gnlh, 0), + genlmsg_attrlen(gnlh, 0), NULL); + + if (!attrs[MAC802154_HWSIM_ATTR_RADIO_ID]) + return NL_SKIP; + + idx = nla_get_u32(attrs[MAC802154_HWSIM_ATTR_RADIO_ID]); + + if (idx == *ignore_idx) + return NL_SKIP; + + printf("wpan_hwsim radio%" PRIu32 ":\n", idx); + + if (!attrs[MAC802154_HWSIM_ATTR_RADIO_EDGES]) + return NL_SKIP; + + nla_for_each_nested(nl_edge, attrs[MAC802154_HWSIM_ATTR_RADIO_EDGES], + rem_edge) { + rc = nla_parse_nested(edge, MAC802154_HWSIM_EDGE_ATTR_MAX, + nl_edge, edge_policy); + if (rc) + return NL_SKIP; + + idx = nla_get_u32(edge[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID]); + + if (idx == *ignore_idx) + continue; + + printf("\tedge:\n"); + printf("\t\tradio%" PRIu32 "\n", idx); + lqi = nla_get_u32(edge[MAC802154_HWSIM_EDGE_ATTR_LQI]); + printf("\t\tlqi: 0x%02x\n", lqi); + } + + return NL_SKIP; +} + +static int hwsim_dump(bool dot, int unsigned ignore_idx) +{ + struct nl_msg *msg; + int rc; + + nl_socket_modify_cb(nl_sock, NL_CB_VALID, NL_CB_CUSTOM, + dot ? nl_msg_dot_cb : nl_msg_cb, &ignore_idx); + msg = nlmsg_alloc(); + if (!msg) + return -ENOMEM; + + genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, nlhwsim_id, 0, NLM_F_DUMP, + MAC802154_HWSIM_CMD_GET_RADIO, 0); + + if (dot) + printf("digraph {\n"); + + rc = nl_send_sync(nl_sock, msg); + if (rc < 0) + return rc; + + if (dot) + printf("}\n"); + + return rc; +} + +static int hwsim_del(uint32_t idx) +{ + struct nl_msg *msg; + struct nl_cb *cb; + int err = 0; + int rc; + + cb = nl_cb_alloc(NL_CB_DEFAULT); + if (!cb) + return -ENOMEM; + + msg = nlmsg_alloc(); + if (!msg) { + nl_cb_put(cb); + return -ENOMEM; + } + + genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, nlhwsim_id, 0, 0, + MAC802154_HWSIM_CMD_DEL_RADIO, 0); + nla_put_u32(msg, MAC802154_HWSIM_ATTR_RADIO_ID, idx); + + nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); + rc = nl_send_auto(nl_sock, msg); + nl_recvmsgs(nl_sock, cb); + if (err < 0) + fprintf(stderr, "Failed to remove radio: %s\n", strerror(abs(err))); + nl_cb_put(cb); + + return rc; +} + +static int hwsim_cmd_edge(int cmd, uint32_t idx, uint32_t idx2, uint8_t lqi) +{ + struct nlattr* edge; + struct nl_msg *msg; + struct nl_cb *cb; + int err = 0; + int rc; + + cb = nl_cb_alloc(NL_CB_DEFAULT); + if (!cb) + return -ENOMEM; + + msg = nlmsg_alloc(); + if (!msg) { + nl_cb_put(cb); + return -ENOMEM; + } + + genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, nlhwsim_id, 0, 0, + cmd, 0); + nla_put_u32(msg, MAC802154_HWSIM_ATTR_RADIO_ID, idx); + + edge = nla_nest_start(msg, MAC802154_HWSIM_ATTR_RADIO_EDGE); + if (!edge) { + nl_cb_put(cb); + return -ENOMEM; + } + + nla_put_u32(msg, MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID, idx2); + if (cmd == MAC802154_HWSIM_CMD_SET_EDGE) + nla_put_u8(msg, MAC802154_HWSIM_EDGE_ATTR_LQI, lqi); + + nla_nest_end(msg, edge); + + nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); + rc = nl_send_auto(nl_sock, msg); + nl_recvmsgs(nl_sock, cb); + if (err < 0) + fprintf(stderr, "Failed to add or remove edge: %s\n", strerror(abs(err))); + nl_cb_put(cb); + + return rc; +} + +static int hwsim_do_cmd(uint32_t cmd, unsigned int idx, unsigned int idx2, + uint8_t lqi, bool dot, unsigned int ignore_idx) +{ + int rc; + + rc = nlhwsim_init(); + if (rc) + return 1; + + switch (cmd) { + case MAC802154_HWSIM_CMD_GET_RADIO: + rc = hwsim_dump(dot, ignore_idx); + break; + case MAC802154_HWSIM_CMD_DEL_RADIO: + rc = hwsim_del(idx); + break; + case MAC802154_HWSIM_CMD_NEW_RADIO: + rc = hwsim_create(); + break; + case MAC802154_HWSIM_CMD_NEW_EDGE: + case MAC802154_HWSIM_CMD_DEL_EDGE: + case MAC802154_HWSIM_CMD_SET_EDGE: + rc = hwsim_cmd_edge(cmd, idx, idx2, lqi); + break; + default: + rc = -EINVAL; + break; + } + + nlhwsim_cleanup(); + + return rc; +} + +static void print_usage(void) +{ + printf("wpan_hwsim [OPTION...] [CMD...]\n"); + printf("\n"); + printf(" possible options:\n"); + printf(" -h, --help show this help\n"); + printf(" -v, --version show version\n"); + printf(" -d, --dot dump topology as dot format\n"); + printf(" -i, --ignore filter one node from dump (useful for virtual monitors)\n"); + printf("\n"); + printf(" possible commands:\n"); + printf(" add add new hwsim radio\n"); + printf(" del IDX del hwsim radio according idx\n"); + printf(" edge add IDX IDX add edge between radios\n"); + printf(" edge del IDX IDX delete edge between radios\n"); + printf(" edge lqi IDX IDX LQI set lqi value for a specific edge\n"); + printf("\n"); + printf(" To dump all node information just call this program without any command\n"); +} + +static void print_version(void) +{ + printf(PACKAGE_VERSION "\n"); +} + +int main(int argc, const char *argv[]) +{ + unsigned long int idx, idx2, lqi, ignore_idx = ULONG_MAX; + bool dot = false; + int cmd; + int rc; + int c; + + while (1) { + int option_index = 0; + static struct option long_options[] = { + {"help", required_argument, 0, 'h' }, + {"version", required_argument, 0, 'v' }, + {"dot", required_argument, 0, 'd' }, + {"ignore", required_argument, 0, 'i' }, + {0, 0, 0, 0 } + }; + + c = getopt_long(argc, (char **)argv, "vhdi:", + long_options, &option_index); + if (c == -1) + break; + + switch (c) { + case 'v': + print_version(); + return EXIT_SUCCESS; + case 'h': + print_usage(); + return EXIT_SUCCESS; + case 'd': + dot = true; + break; + case 'i': + ignore_idx = strtoul(optarg, NULL, 0); + if (ignore_idx == ULONG_MAX) { + fprintf(stderr, "Invalid radio index for ignore argument\n"); + return EXIT_FAILURE; + } + break; + default: + print_usage(); + return EXIT_FAILURE; + } + } + + if (optind + 1 > argc) { + rc = hwsim_do_cmd(MAC802154_HWSIM_CMD_GET_RADIO, 0, 0, 0, dot, + ignore_idx); + if (rc < 0) + return EXIT_FAILURE; + else + goto out; + } + + if (!strncmp(argv[optind], "add", 3)) { + rc = hwsim_do_cmd(MAC802154_HWSIM_CMD_NEW_RADIO, 0, 0, 0, 0, 0); + if (rc < 0) + return EXIT_FAILURE; + } else if (!strncmp(argv[optind], "del", 3)) { + if (optind + 2 > argc) { + fprintf(stderr, "Missing radio index for delete\n"); + return EXIT_FAILURE; + } else { + idx = strtoul(argv[optind + 1], NULL, 0); + if (idx == ULONG_MAX) { + fprintf(stderr, "Invalid radio index for delete\n"); + return EXIT_FAILURE; + } + + rc = hwsim_do_cmd(MAC802154_HWSIM_CMD_DEL_RADIO, idx, 0, 0, 0, 0); + if (rc < 0) + return EXIT_FAILURE; + } + } else if (!strncmp(argv[optind], "edge", 4)) { + if (optind + 4 > argc) { + fprintf(stderr, "Missing edge radio index information\n"); + return EXIT_FAILURE; + } else { + if (!strncmp(argv[optind + 1], "add", 3)) { + cmd = MAC802154_HWSIM_CMD_NEW_EDGE; + } else if (!strncmp(argv[optind + 1], "del", 3)) { + cmd = MAC802154_HWSIM_CMD_DEL_EDGE; + } else if (!strncmp(argv[optind + 1], "lqi", 3)) { + cmd = MAC802154_HWSIM_CMD_SET_EDGE; + } else { + fprintf(stderr, "Invalid edge command\n"); + return EXIT_FAILURE; + } + + if (cmd == MAC802154_HWSIM_CMD_SET_EDGE) { + if (optind + 5 > argc) { + fprintf(stderr, "LQI information missing\n"); + return EXIT_FAILURE; + } + + lqi = strtoul(argv[optind + 4], NULL, 0); + if (lqi == ULONG_MAX || lqi > 0xff) { + fprintf(stderr, "Invalid lqi value\n"); + return EXIT_FAILURE; + } + } + + idx = strtoul(argv[optind + 2], NULL, 0); + if (idx == ULONG_MAX) { + fprintf(stderr, "Invalid first radio index for edge command\n"); + return EXIT_FAILURE; + } + + idx2 = strtoul(argv[optind + 3], NULL, 0); + if (idx2 == ULONG_MAX) { + fprintf(stderr, "Invalid second radio index for edge command\n"); + return EXIT_FAILURE; + } + + rc = hwsim_do_cmd(cmd, idx, idx2, lqi, 0, 0); + if (rc < 0) + return EXIT_FAILURE; + } + } else { + fprintf(stderr, "Unknown command\n"); + print_usage(); + return EXIT_FAILURE; + } + +out: + return EXIT_SUCCESS; +}
This patch adds initial support for wpan-hwsim utility to control the mac802154_hwsim driver over netlink. Signed-off-by: Alexander Aring <aring@mojatatu.com> --- Makefile.am | 1 + configure.ac | 1 + wpan-hwsim/Makefile.am | 8 + wpan-hwsim/mac802154_hwsim.h | 73 +++++++ wpan-hwsim/wpan-hwsim.c | 510 +++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 593 insertions(+) create mode 100644 wpan-hwsim/Makefile.am create mode 100644 wpan-hwsim/mac802154_hwsim.h create mode 100644 wpan-hwsim/wpan-hwsim.c