diff options
Diffstat (limited to 'bcmdhd/dhdutil/dhdu_nl80211.c')
| -rw-r--r-- | bcmdhd/dhdutil/dhdu_nl80211.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/bcmdhd/dhdutil/dhdu_nl80211.c b/bcmdhd/dhdutil/dhdu_nl80211.c new file mode 100644 index 0000000..8e681f8 --- /dev/null +++ b/bcmdhd/dhdutil/dhdu_nl80211.c @@ -0,0 +1,138 @@ +/* + * nl80211 linux driver interface. + * + * Copyright (C) 1999-2013, Broadcom Corporation + * + * 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. + * + * $Id: $ + */ +#include <errno.h> +#include <linux/nl80211.h> +#include <dhdioctl.h> +#include "dhdu_nl80211.h" + +/* libnl 1.x compatibility code */ +#if !defined(CONFIG_LIBNL20) && !defined(CONFIG_LIBNL30) +static inline struct nl_handle *nl_socket_alloc(void) +{ + return nl_handle_alloc(); +} + +static inline void nl_socket_free(struct nl_sock *h) +{ + nl_handle_destroy(h); +} +#endif /* CONFIG_LIBNL20 && CONFIG_LIBNL30 */ + +static int dhd_nl_error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg) +{ + int *ret = arg; + *ret = err->error; + return NL_STOP; +} + +static int dhd_nl_finish_handler(struct nl_msg *msg, void *arg) +{ + int *ret = arg; + *ret = 0; + return NL_SKIP; +} + +static int dhd_nl_ack_handler(struct nl_msg *msg, void *arg) +{ + int *ret = arg; + *ret = 0; + return NL_STOP; +} + +static int dhd_nl_valid_handler(struct nl_msg *msg, void *arg) +{ + return NL_SKIP; +} + +int dhd_nl_sock_connect(struct dhd_netlink_info *dhd_nli) +{ + dhd_nli->nl = nl_socket_alloc(); + if (dhd_nli->nl == NULL) + return -1; + + if (genl_connect(dhd_nli->nl) < 0) { + fprintf(stderr, "netlink connection failed\n"); + goto err; + } + + dhd_nli->nl_id = genl_ctrl_resolve(dhd_nli->nl, "nl80211"); + if (dhd_nli->nl_id < 0) { + fprintf(stderr, "'nl80211' netlink not found\n"); + goto err; + } + + dhd_nli->cb = nl_cb_alloc(NL_CB_DEBUG); + if (dhd_nli->cb == NULL) + goto err; + + nl_socket_set_cb(dhd_nli->nl, dhd_nli->cb); + return 0; + +err: + nl_cb_put(dhd_nli->cb); + nl_socket_free(dhd_nli->nl); + fprintf(stderr, "nl80211 connection failed\n"); + return -1; +} + +void dhd_nl_sock_disconnect(struct dhd_netlink_info *dhd_nli) +{ + nl_cb_put(dhd_nli->cb); + nl_socket_free(dhd_nli->nl); +} + +int dhd_nl_do_testmode(struct dhd_netlink_info *dhd_nli, dhd_ioctl_t *ioc) +{ + struct nl_msg *msg; + int err; + + msg = nlmsg_alloc(); + if (msg == NULL) + return -ENOMEM; + + /* fill testmode message */ + genlmsg_put(msg, 0, 0, dhd_nli->nl_id, 0, 0, + NL80211_CMD_TESTMODE, 0); + NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dhd_nli->ifidx); + NLA_PUT(msg, NL80211_ATTR_TESTDATA, sizeof(*ioc), ioc); + + err = nl_send_auto_complete(dhd_nli->nl, msg); + if (err < 0) + goto out; + + err = 1; + nl_cb_err(dhd_nli->cb, NL_CB_CUSTOM, dhd_nl_error_handler, &err); + nl_cb_set(dhd_nli->cb, NL_CB_ACK, NL_CB_CUSTOM, + dhd_nl_ack_handler, &err); + nl_cb_set(dhd_nli->cb, NL_CB_FINISH, NL_CB_CUSTOM, + dhd_nl_finish_handler, &err); + nl_cb_set(dhd_nli->cb, NL_CB_VALID, NL_CB_CUSTOM, + dhd_nl_valid_handler, &err); + while (err > 0) + nl_recvmsgs(dhd_nli->nl, dhd_nli->cb); +out: + nlmsg_free(msg); + return err; + +nla_put_failure: + fprintf(stderr, "setting netlink attribute failed\n"); + err = -EFAULT; + goto out; +} |