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139 lines
3.4 KiB
139 lines
3.4 KiB
/*
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* nl80211 linux driver interface.
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*
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* Copyright (C) 1999-2013, Broadcom Corporation
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* $Id: $
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*/
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#include <errno.h>
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#include <linux/nl80211.h>
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#include <dhdioctl.h>
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#include "dhdu_nl80211.h"
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/* libnl 1.x compatibility code */
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#if !defined(CONFIG_LIBNL20) && !defined(CONFIG_LIBNL30)
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static inline struct nl_handle *nl_socket_alloc(void)
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{
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return nl_handle_alloc();
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}
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static inline void nl_socket_free(struct nl_sock *h)
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{
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nl_handle_destroy(h);
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}
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#endif /* CONFIG_LIBNL20 && CONFIG_LIBNL30 */
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static int dhd_nl_error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
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{
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int *ret = arg;
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*ret = err->error;
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return NL_STOP;
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}
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static int dhd_nl_finish_handler(struct nl_msg *msg, void *arg)
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{
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int *ret = arg;
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*ret = 0;
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return NL_SKIP;
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}
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static int dhd_nl_ack_handler(struct nl_msg *msg, void *arg)
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{
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int *ret = arg;
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*ret = 0;
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return NL_STOP;
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}
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static int dhd_nl_valid_handler(struct nl_msg *msg, void *arg)
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{
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return NL_SKIP;
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}
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int dhd_nl_sock_connect(struct dhd_netlink_info *dhd_nli)
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{
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dhd_nli->nl = nl_socket_alloc();
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if (dhd_nli->nl == NULL)
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return -1;
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if (genl_connect(dhd_nli->nl) < 0) {
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fprintf(stderr, "netlink connection failed\n");
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goto err;
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}
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dhd_nli->nl_id = genl_ctrl_resolve(dhd_nli->nl, "nl80211");
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if (dhd_nli->nl_id < 0) {
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fprintf(stderr, "'nl80211' netlink not found\n");
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goto err;
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}
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dhd_nli->cb = nl_cb_alloc(NL_CB_DEBUG);
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if (dhd_nli->cb == NULL)
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goto err;
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nl_socket_set_cb(dhd_nli->nl, dhd_nli->cb);
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return 0;
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err:
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nl_cb_put(dhd_nli->cb);
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nl_socket_free(dhd_nli->nl);
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fprintf(stderr, "nl80211 connection failed\n");
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return -1;
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}
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void dhd_nl_sock_disconnect(struct dhd_netlink_info *dhd_nli)
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{
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nl_cb_put(dhd_nli->cb);
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nl_socket_free(dhd_nli->nl);
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}
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int dhd_nl_do_testmode(struct dhd_netlink_info *dhd_nli, dhd_ioctl_t *ioc)
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{
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struct nl_msg *msg;
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int err;
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msg = nlmsg_alloc();
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if (msg == NULL)
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return -ENOMEM;
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/* fill testmode message */
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genlmsg_put(msg, 0, 0, dhd_nli->nl_id, 0, 0,
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NL80211_CMD_TESTMODE, 0);
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NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dhd_nli->ifidx);
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NLA_PUT(msg, NL80211_ATTR_TESTDATA, sizeof(*ioc), ioc);
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err = nl_send_auto_complete(dhd_nli->nl, msg);
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if (err < 0)
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goto out;
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err = 1;
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nl_cb_err(dhd_nli->cb, NL_CB_CUSTOM, dhd_nl_error_handler, &err);
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nl_cb_set(dhd_nli->cb, NL_CB_ACK, NL_CB_CUSTOM,
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dhd_nl_ack_handler, &err);
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nl_cb_set(dhd_nli->cb, NL_CB_FINISH, NL_CB_CUSTOM,
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dhd_nl_finish_handler, &err);
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nl_cb_set(dhd_nli->cb, NL_CB_VALID, NL_CB_CUSTOM,
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dhd_nl_valid_handler, &err);
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while (err > 0)
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nl_recvmsgs(dhd_nli->nl, dhd_nli->cb);
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out:
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nlmsg_free(msg);
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return err;
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nla_put_failure:
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fprintf(stderr, "setting netlink attribute failed\n");
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err = -EFAULT;
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goto out;
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}
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