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5d44fe7c98
This allows communication with external entities. It also required fixing up the netlink policy, since NLA_UNSPEC attributes are no longer accepted. Signed-off-by: Erel Geron <erelx.geron@intel.com> [port to backports, inline the ID, use 29 as the ID as requested, drop != NULL checks, reduce ifdefs] Link: https://lore.kernel.org/r/20200305143212.c6e4c87d225b.I7ce60bf143e863dcdf0fb8040aab7168ba549b99@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
270 lines
9.5 KiB
C
270 lines
9.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
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* Copyright (c) 2008, Jouni Malinen <j@w1.fi>
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* Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
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* Copyright (C) 2020 Intel Corporation
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*/
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#ifndef __MAC80211_HWSIM_H
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#define __MAC80211_HWSIM_H
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/**
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* enum hwsim_tx_control_flags - flags to describe transmission info/status
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*
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* These flags are used to give the wmediumd extra information in order to
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* modify its behavior for each frame
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*
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* @HWSIM_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame.
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* @HWSIM_TX_CTL_NO_ACK: tell the wmediumd not to wait for an ack
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* @HWSIM_TX_STAT_ACK: Frame was acknowledged
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*
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*/
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enum hwsim_tx_control_flags {
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HWSIM_TX_CTL_REQ_TX_STATUS = BIT(0),
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HWSIM_TX_CTL_NO_ACK = BIT(1),
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HWSIM_TX_STAT_ACK = BIT(2),
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};
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/**
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* DOC: Frame transmission/registration support
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*
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* Frame transmission and registration support exists to allow userspace
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* entities such as wmediumd to receive and process all broadcasted
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* frames from a mac80211_hwsim radio device.
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*
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* This allow user space applications to decide if the frame should be
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* dropped or not and implement a wireless medium simulator at user space.
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*
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* Registration is done by sending a register message to the driver and
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* will be automatically unregistered if the user application doesn't
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* responds to sent frames.
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* Once registered the user application has to take responsibility of
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* broadcasting the frames to all listening mac80211_hwsim radio
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* interfaces.
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*
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* For more technical details, see the corresponding command descriptions
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* below.
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*/
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/**
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* enum hwsim_commands - supported hwsim commands
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*
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* @HWSIM_CMD_UNSPEC: unspecified command to catch errors
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*
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* @HWSIM_CMD_REGISTER: request to register and received all broadcasted
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* frames by any mac80211_hwsim radio device.
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* @HWSIM_CMD_FRAME: send/receive a broadcasted frame from/to kernel/user
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* space, uses:
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* %HWSIM_ATTR_ADDR_TRANSMITTER, %HWSIM_ATTR_ADDR_RECEIVER,
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* %HWSIM_ATTR_FRAME, %HWSIM_ATTR_FLAGS, %HWSIM_ATTR_RX_RATE,
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* %HWSIM_ATTR_SIGNAL, %HWSIM_ATTR_COOKIE, %HWSIM_ATTR_FREQ (optional)
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* @HWSIM_CMD_TX_INFO_FRAME: Transmission info report from user space to
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* kernel, uses:
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* %HWSIM_ATTR_ADDR_TRANSMITTER, %HWSIM_ATTR_FLAGS,
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* %HWSIM_ATTR_TX_INFO, %WSIM_ATTR_TX_INFO_FLAGS,
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* %HWSIM_ATTR_SIGNAL, %HWSIM_ATTR_COOKIE
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* @HWSIM_CMD_NEW_RADIO: create a new radio with the given parameters,
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* returns the radio ID (>= 0) or negative on errors, if successful
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* then multicast the result, uses optional parameter:
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* %HWSIM_ATTR_REG_STRICT_REG, %HWSIM_ATTR_SUPPORT_P2P_DEVICE,
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* %HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE, %HWSIM_ATTR_CHANNELS,
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* %HWSIM_ATTR_NO_VIF, %HWSIM_ATTR_RADIO_NAME, %HWSIM_ATTR_USE_CHANCTX,
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* %HWSIM_ATTR_REG_HINT_ALPHA2, %HWSIM_ATTR_REG_CUSTOM_REG,
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* %HWSIM_ATTR_PERM_ADDR
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* @HWSIM_CMD_DEL_RADIO: destroy a radio, reply is multicasted
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* @HWSIM_CMD_GET_RADIO: fetch information about existing radios, uses:
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* %HWSIM_ATTR_RADIO_ID
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* @__HWSIM_CMD_MAX: enum limit
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*/
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enum {
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HWSIM_CMD_UNSPEC,
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HWSIM_CMD_REGISTER,
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HWSIM_CMD_FRAME,
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HWSIM_CMD_TX_INFO_FRAME,
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HWSIM_CMD_NEW_RADIO,
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HWSIM_CMD_DEL_RADIO,
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HWSIM_CMD_GET_RADIO,
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__HWSIM_CMD_MAX,
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};
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#define HWSIM_CMD_MAX (_HWSIM_CMD_MAX - 1)
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#define HWSIM_CMD_CREATE_RADIO HWSIM_CMD_NEW_RADIO
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#define HWSIM_CMD_DESTROY_RADIO HWSIM_CMD_DEL_RADIO
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/**
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* enum hwsim_attrs - hwsim netlink attributes
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*
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* @HWSIM_ATTR_UNSPEC: unspecified attribute to catch errors
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*
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* @HWSIM_ATTR_ADDR_RECEIVER: MAC address of the radio device that
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* the frame is broadcasted to
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* @HWSIM_ATTR_ADDR_TRANSMITTER: MAC address of the radio device that
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* the frame was broadcasted from
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* @HWSIM_ATTR_FRAME: Data array
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* @HWSIM_ATTR_FLAGS: mac80211 transmission flags, used to process
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properly the frame at user space
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* @HWSIM_ATTR_RX_RATE: estimated rx rate index for this frame at user
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space
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* @HWSIM_ATTR_SIGNAL: estimated RX signal for this frame at user
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space
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* @HWSIM_ATTR_TX_INFO: ieee80211_tx_rate array
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* @HWSIM_ATTR_COOKIE: sk_buff cookie to identify the frame
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* @HWSIM_ATTR_CHANNELS: u32 attribute used with the %HWSIM_CMD_CREATE_RADIO
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* command giving the number of channels supported by the new radio
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* @HWSIM_ATTR_RADIO_ID: u32 attribute used with %HWSIM_CMD_DESTROY_RADIO
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* only to destroy a radio
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* @HWSIM_ATTR_REG_HINT_ALPHA2: alpha2 for regulatoro driver hint
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* (nla string, length 2)
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* @HWSIM_ATTR_REG_CUSTOM_REG: custom regulatory domain index (u32 attribute)
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* @HWSIM_ATTR_REG_STRICT_REG: request REGULATORY_STRICT_REG (flag attribute)
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* @HWSIM_ATTR_SUPPORT_P2P_DEVICE: support P2P Device virtual interface (flag)
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* @HWSIM_ATTR_USE_CHANCTX: used with the %HWSIM_CMD_CREATE_RADIO
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* command to force use of channel contexts even when only a
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* single channel is supported
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* @HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE: used with the %HWSIM_CMD_CREATE_RADIO
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* command to force radio removal when process that created the radio dies
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* @HWSIM_ATTR_RADIO_NAME: Name of radio, e.g. phy666
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* @HWSIM_ATTR_NO_VIF: Do not create vif (wlanX) when creating radio.
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* @HWSIM_ATTR_FREQ: Frequency at which packet is transmitted or received.
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* @HWSIM_ATTR_TX_INFO_FLAGS: additional flags for corresponding
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* rates of %HWSIM_ATTR_TX_INFO
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* @HWSIM_ATTR_PERM_ADDR: permanent mac address of new radio
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* @HWSIM_ATTR_IFTYPE_SUPPORT: u32 attribute of supported interface types bits
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* @HWSIM_ATTR_CIPHER_SUPPORT: u32 array of supported cipher types
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* @__HWSIM_ATTR_MAX: enum limit
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*/
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enum {
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HWSIM_ATTR_UNSPEC,
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HWSIM_ATTR_ADDR_RECEIVER,
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HWSIM_ATTR_ADDR_TRANSMITTER,
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HWSIM_ATTR_FRAME,
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HWSIM_ATTR_FLAGS,
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HWSIM_ATTR_RX_RATE,
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HWSIM_ATTR_SIGNAL,
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HWSIM_ATTR_TX_INFO,
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HWSIM_ATTR_COOKIE,
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HWSIM_ATTR_CHANNELS,
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HWSIM_ATTR_RADIO_ID,
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HWSIM_ATTR_REG_HINT_ALPHA2,
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HWSIM_ATTR_REG_CUSTOM_REG,
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HWSIM_ATTR_REG_STRICT_REG,
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HWSIM_ATTR_SUPPORT_P2P_DEVICE,
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HWSIM_ATTR_USE_CHANCTX,
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HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE,
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HWSIM_ATTR_RADIO_NAME,
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HWSIM_ATTR_NO_VIF,
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HWSIM_ATTR_FREQ,
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HWSIM_ATTR_PAD,
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HWSIM_ATTR_TX_INFO_FLAGS,
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HWSIM_ATTR_PERM_ADDR,
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HWSIM_ATTR_IFTYPE_SUPPORT,
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HWSIM_ATTR_CIPHER_SUPPORT,
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__HWSIM_ATTR_MAX,
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};
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#define HWSIM_ATTR_MAX (__HWSIM_ATTR_MAX - 1)
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/**
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* struct hwsim_tx_rate - rate selection/status
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*
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* @idx: rate index to attempt to send with
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* @count: number of tries in this rate before going to the next rate
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*
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* A value of -1 for @idx indicates an invalid rate and, if used
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* in an array of retry rates, that no more rates should be tried.
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*
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* When used for transmit status reporting, the driver should
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* always report the rate and number of retries used.
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*
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*/
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struct hwsim_tx_rate {
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s8 idx;
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u8 count;
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} __packed;
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/**
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* enum hwsim_tx_rate_flags - per-rate flags set by the rate control algorithm.
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* Inspired by structure mac80211_rate_control_flags. New flags may be
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* appended, but old flags not deleted, to keep compatibility for
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* userspace.
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*
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* These flags are set by the Rate control algorithm for each rate during tx,
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* in the @flags member of struct ieee80211_tx_rate.
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*
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* @MAC80211_HWSIM_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate.
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* @MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required.
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* This is set if the current BSS requires ERP protection.
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* @MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE: Use short preamble.
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* @MAC80211_HWSIM_TX_RC_MCS: HT rate.
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* @MAC80211_HWSIM_TX_RC_VHT_MCS: VHT MCS rate, in this case the idx field is
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* split into a higher 4 bits (Nss) and lower 4 bits (MCS number)
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* @MAC80211_HWSIM_TX_RC_GREEN_FIELD: Indicates whether this rate should be used
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* in Greenfield mode.
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* @MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be
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* 40 MHz.
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* @MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH: Indicates 80 MHz transmission
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* @MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH: Indicates 160 MHz transmission
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* (80+80 isn't supported yet)
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* @MAC80211_HWSIM_TX_RC_DUP_DATA: The frame should be transmitted on both of
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* the adjacent 20 MHz channels, if the current channel type is
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* NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS.
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* @MAC80211_HWSIM_TX_RC_SHORT_GI: Short Guard interval should be used for this
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* rate.
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*/
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enum hwsim_tx_rate_flags {
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MAC80211_HWSIM_TX_RC_USE_RTS_CTS = BIT(0),
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MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT = BIT(1),
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MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE = BIT(2),
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/* rate index is an HT/VHT MCS instead of an index */
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MAC80211_HWSIM_TX_RC_MCS = BIT(3),
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MAC80211_HWSIM_TX_RC_GREEN_FIELD = BIT(4),
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MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH = BIT(5),
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MAC80211_HWSIM_TX_RC_DUP_DATA = BIT(6),
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MAC80211_HWSIM_TX_RC_SHORT_GI = BIT(7),
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MAC80211_HWSIM_TX_RC_VHT_MCS = BIT(8),
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MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH = BIT(9),
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MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH = BIT(10),
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};
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/**
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* struct hwsim_tx_rate - rate selection/status
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*
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* @idx: rate index to attempt to send with
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* @count: number of tries in this rate before going to the next rate
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*
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* A value of -1 for @idx indicates an invalid rate and, if used
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* in an array of retry rates, that no more rates should be tried.
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*
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* When used for transmit status reporting, the driver should
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* always report the rate and number of retries used.
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*
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*/
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struct hwsim_tx_rate_flag {
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s8 idx;
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u16 flags;
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} __packed;
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/**
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* DOC: Frame transmission support over virtio
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*
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* Frame transmission is also supported over virtio to allow communication
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* with external entities.
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*/
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/**
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* enum hwsim_vqs - queues for virtio frame transmission
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*
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* @HWSIM_VQ_TX: send frames to external entity
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* @HWSIM_VQ_RX: receive frames and transmission info reports
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* @HWSIM_NUM_VQS: enum limit
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*/
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enum {
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HWSIM_VQ_TX,
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HWSIM_VQ_RX,
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HWSIM_NUM_VQS,
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};
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#endif /* __MAC80211_HWSIM_H */
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