diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Makefile.am | 1 | ||||
| -rw-r--r-- | lib/op-state-get.c | 112 |
2 files changed, 113 insertions, 0 deletions
diff --git a/lib/Makefile.am b/lib/Makefile.am index c42b2c5..77e1cee 100644 --- a/lib/Makefile.am +++ b/lib/Makefile.am @@ -17,6 +17,7 @@ libwimaxll_sources = \ op-msg.c \ op-reset.c \ op-rfkill.c \ + op-state-get.c \ re-state-change.c \ wimax.c diff --git a/lib/op-state-get.c b/lib/op-state-get.c new file mode 100644 index 0000000..9822bf8 --- /dev/null +++ b/lib/op-state-get.c @@ -0,0 +1,112 @@ +/* + * Linux WiMax + * Export the kernel's WiMAX stack wimaxll_state_get() function + * + * + * Copyright (C) 2009 Darius Augulis <augulis.darius@gmail.com> + * + * Based on op-rfkill.c + * + * Copyright (C) 2007-2008 Intel Corporation. All rights reserved. + * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#define _GNU_SOURCE +#include <sys/types.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <stdarg.h> +#include <errno.h> +#include <assert.h> +#include <linux/types.h> +#include <netlink/msg.h> +#include <netlink/netlink.h> +#include <netlink/genl/genl.h> +#include <wimaxll.h> +#include "internal.h" +#define D_LOCAL 0 +#include "debug.h" + + +/** + * Get Wimax device status from kernel and return it to user space + * + * \param wmx WiMAX device handle + * + * \return Negative errno code on error. Otherwise, one from Wimax device + * status value, defined in enum wimax_st. + * + * Allows the caller to get the state of the Wimax device. + * + * \ingroup device_management + * \internal + * + */ +int wimaxll_state_get(struct wimaxll_handle *wmx) +{ + ssize_t result; + struct nl_msg *msg; + + result = -EBADF; + if (wmx->ifidx == 0) + goto error_not_any; + msg = nlmsg_new(); + if (msg == NULL) { + result = errno; + wimaxll_msg(wmx, "E: STATE_GET: cannot allocate generic" + "netlink message: %m\n"); + goto error_msg_alloc; + } + if (genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, + wimaxll_family_id(wmx), 0, 0, + WIMAX_GNL_OP_STATE_GET, WIMAX_GNL_VERSION) == NULL) { + result = -ENOMEM; + wimaxll_msg(wmx, "E: STATE_GET: error preparing message: " + "%d 0x%08x\n", result, result); + goto error_msg_prep; + } + nla_put_u32(msg, WIMAX_GNL_STGET_IFIDX, (__u32) wmx->ifidx); + result = nl_send_auto_complete(wmx->nlh_tx, msg); + if (result < 0) { + wimaxll_msg(wmx, "E: STATE_GET: error sending message: %zd\n", + result); + goto error_msg_send; + } + /* Read the message ACK from netlink */ + result = wimaxll_wait_for_ack(wmx); + if (result < 0 && result != -ENODEV) + wimaxll_msg(wmx, "E: STATE_GET: operation failed: %zd\n", result); +error_msg_prep: +error_msg_send: + nlmsg_free(msg); +error_msg_alloc: +error_not_any: + d_fnend(3, wmx, "(wmx %p) = %d\n", wmx, result); + return result; +} |