nl80211: add KHz frequency offset for most wifi commands
cfg80211 recently gained the ability to understand a frequency offset component in KHz. Expose this in nl80211 through the new attributes NL80211_ATTR_WIPHY_FREQ_OFFSET, NL80211_FREQUENCY_ATTR_OFFSET, NL80211_ATTR_CENTER_FREQ1_OFFSET, and NL80211_BSS_FREQUENCY_OFFSET. These add support to send and receive a KHz offset component with the following NL80211 commands: - NL80211_CMD_FRAME - NL80211_CMD_GET_SCAN - NL80211_CMD_AUTHENTICATE - NL80211_CMD_ASSOCIATE - NL80211_CMD_CONNECT Along with any other command which takes a chandef, ie: - NL80211_CMD_SET_CHANNEL - NL80211_CMD_SET_WIPHY - NL80211_CMD_START_AP - NL80211_CMD_RADAR_DETECT - NL80211_CMD_NOTIFY_RADAR - NL80211_CMD_CHANNEL_SWITCH - NL80211_JOIN_IBSS - NL80211_CMD_REMAIN_ON_CHANNEL - NL80211_CMD_JOIN_OCB - NL80211_CMD_JOIN_MESH - NL80211_CMD_TDLS_CHANNEL_SWITCH If the driver advertises a band containing channels with frequency offset, it must also verify support for frequency offset channels in its cfg80211 ops, or return an error. Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> Link: https://lore.kernel.org/r/20200430172554.18383-3-thomas@adapt-ip.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Thomas Pedersen
Johannes Berg
parent
e76fede8bf
commit
942ba88ba9
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@ -296,13 +296,14 @@
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* to get a list of all present wiphys.
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* @NL80211_CMD_SET_WIPHY: set wiphy parameters, needs %NL80211_ATTR_WIPHY or
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* %NL80211_ATTR_IFINDEX; can be used to set %NL80211_ATTR_WIPHY_NAME,
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* %NL80211_ATTR_WIPHY_TXQ_PARAMS, %NL80211_ATTR_WIPHY_FREQ (and the
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* attributes determining the channel width; this is used for setting
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* monitor mode channel), %NL80211_ATTR_WIPHY_RETRY_SHORT,
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* %NL80211_ATTR_WIPHY_RETRY_LONG, %NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
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* and/or %NL80211_ATTR_WIPHY_RTS_THRESHOLD.
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* However, for setting the channel, see %NL80211_CMD_SET_CHANNEL
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* instead, the support here is for backward compatibility only.
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* %NL80211_ATTR_WIPHY_TXQ_PARAMS, %NL80211_ATTR_WIPHY_FREQ,
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* %NL80211_ATTR_WIPHY_FREQ_OFFSET (and the attributes determining the
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* channel width; this is used for setting monitor mode channel),
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* %NL80211_ATTR_WIPHY_RETRY_SHORT, %NL80211_ATTR_WIPHY_RETRY_LONG,
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* %NL80211_ATTR_WIPHY_FRAG_THRESHOLD, and/or
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* %NL80211_ATTR_WIPHY_RTS_THRESHOLD. However, for setting the channel,
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* see %NL80211_CMD_SET_CHANNEL instead, the support here is for backward
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* compatibility only.
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* @NL80211_CMD_NEW_WIPHY: Newly created wiphy, response to get request
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* or rename notification. Has attributes %NL80211_ATTR_WIPHY and
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* %NL80211_ATTR_WIPHY_NAME.
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@ -351,7 +352,8 @@
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* %NL80211_ATTR_AUTH_TYPE, %NL80211_ATTR_INACTIVITY_TIMEOUT,
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* %NL80211_ATTR_ACL_POLICY and %NL80211_ATTR_MAC_ADDRS.
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* The channel to use can be set on the interface or be given using the
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* %NL80211_ATTR_WIPHY_FREQ and the attributes determining channel width.
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* %NL80211_ATTR_WIPHY_FREQ and %NL80211_ATTR_WIPHY_FREQ_OFFSET, and the
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* attributes determining channel width.
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* @NL80211_CMD_NEW_BEACON: old alias for %NL80211_CMD_START_AP
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* @NL80211_CMD_STOP_AP: Stop AP operation on the given interface
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* @NL80211_CMD_DEL_BEACON: old alias for %NL80211_CMD_STOP_AP
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@ -536,11 +538,12 @@
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* interface. %NL80211_ATTR_MAC is used to specify PeerSTAAddress (and
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* BSSID in case of station mode). %NL80211_ATTR_SSID is used to specify
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* the SSID (mainly for association, but is included in authentication
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* request, too, to help BSS selection. %NL80211_ATTR_WIPHY_FREQ is used
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* to specify the frequence of the channel in MHz. %NL80211_ATTR_AUTH_TYPE
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* is used to specify the authentication type. %NL80211_ATTR_IE is used to
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* define IEs (VendorSpecificInfo, but also including RSN IE and FT IEs)
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* to be added to the frame.
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* request, too, to help BSS selection. %NL80211_ATTR_WIPHY_FREQ +
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* %NL80211_ATTR_WIPHY_FREQ_OFFSET is used to specify the frequence of the
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* channel in MHz. %NL80211_ATTR_AUTH_TYPE is used to specify the
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* authentication type. %NL80211_ATTR_IE is used to define IEs
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* (VendorSpecificInfo, but also including RSN IE and FT IEs) to be added
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* to the frame.
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* When used as an event, this reports reception of an Authentication
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* frame in station and IBSS modes when the local MLME processed the
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* frame, i.e., it was for the local STA and was received in correct
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@ -595,8 +598,9 @@
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* requests to connect to a specified network but without separating
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* auth and assoc steps. For this, you need to specify the SSID in a
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* %NL80211_ATTR_SSID attribute, and can optionally specify the association
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* IEs in %NL80211_ATTR_IE, %NL80211_ATTR_AUTH_TYPE, %NL80211_ATTR_USE_MFP,
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* %NL80211_ATTR_MAC, %NL80211_ATTR_WIPHY_FREQ, %NL80211_ATTR_CONTROL_PORT,
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* IEs in %NL80211_ATTR_IE, %NL80211_ATTR_AUTH_TYPE,
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* %NL80211_ATTR_USE_MFP, %NL80211_ATTR_MAC, %NL80211_ATTR_WIPHY_FREQ,
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* %NL80211_ATTR_WIPHY_FREQ_OFFSET, %NL80211_ATTR_CONTROL_PORT,
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* %NL80211_ATTR_CONTROL_PORT_ETHERTYPE,
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* %NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT,
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* %NL80211_ATTR_CONTROL_PORT_OVER_NL80211, %NL80211_ATTR_MAC_HINT, and
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@ -1433,7 +1437,8 @@ enum nl80211_commands {
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* of &enum nl80211_chan_width, describing the channel width. See the
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* documentation of the enum for more information.
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* @NL80211_ATTR_CENTER_FREQ1: Center frequency of the first part of the
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* channel, used for anything but 20 MHz bandwidth
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* channel, used for anything but 20 MHz bandwidth. In S1G this is the
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* operating channel center frequency.
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* @NL80211_ATTR_CENTER_FREQ2: Center frequency of the second part of the
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* channel, used only for 80+80 MHz bandwidth
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* @NL80211_ATTR_WIPHY_CHANNEL_TYPE: included with NL80211_ATTR_WIPHY_FREQ
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@ -2480,9 +2485,14 @@ enum nl80211_commands {
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* entry without having to force a disconnection after the PMK timeout. If
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* no roaming occurs between the reauth threshold and PMK expiration,
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* disassociation is still forced.
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*
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* @NL80211_ATTR_RECEIVE_MULTICAST: multicast flag for the
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* %NL80211_CMD_REGISTER_FRAME command, see the description there.
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* @NL80211_ATTR_WIPHY_FREQ_OFFSET: offset of the associated
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* %NL80211_ATTR_WIPHY_FREQ in positive KHz. Only valid when supplied with
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* an %NL80211_ATTR_WIPHY_FREQ_OFFSET.
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* @NL80211_ATTR_CENTER_FREQ1_OFFSET: Center frequency offset in KHz for the
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* first channel segment specified in %NL80211_ATTR_CENTER_FREQ1.
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*
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*
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* @NUM_NL80211_ATTR: total number of nl80211_attrs available
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* @NL80211_ATTR_MAX: highest attribute number currently defined
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@ -2960,6 +2970,8 @@ enum nl80211_attrs {
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NL80211_ATTR_PMK_REAUTH_THRESHOLD,
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NL80211_ATTR_RECEIVE_MULTICAST,
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NL80211_ATTR_WIPHY_FREQ_OFFSET,
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NL80211_ATTR_CENTER_FREQ1_OFFSET,
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/* add attributes here, update the policy in nl80211.c */
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@ -3682,6 +3694,7 @@ enum nl80211_wmm_rule {
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* (see &enum nl80211_wmm_rule)
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* @NL80211_FREQUENCY_ATTR_NO_HE: HE operation is not allowed on this channel
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* in current regulatory domain.
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* @NL80211_FREQUENCY_ATTR_OFFSET: frequency offset in KHz
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* @NL80211_FREQUENCY_ATTR_MAX: highest frequency attribute number
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* currently defined
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* @__NL80211_FREQUENCY_ATTR_AFTER_LAST: internal use
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@ -3712,6 +3725,7 @@ enum nl80211_frequency_attr {
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NL80211_FREQUENCY_ATTR_NO_10MHZ,
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NL80211_FREQUENCY_ATTR_WMM,
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NL80211_FREQUENCY_ATTR_NO_HE,
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NL80211_FREQUENCY_ATTR_OFFSET,
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/* keep last */
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__NL80211_FREQUENCY_ATTR_AFTER_LAST,
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@ -4482,6 +4496,7 @@ enum nl80211_bss_scan_width {
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* @NL80211_BSS_CHAIN_SIGNAL: per-chain signal strength of last BSS update.
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* Contains a nested array of signal strength attributes (u8, dBm),
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* using the nesting index as the antenna number.
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* @NL80211_BSS_FREQUENCY_OFFSET: frequency offset in KHz
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* @__NL80211_BSS_AFTER_LAST: internal
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* @NL80211_BSS_MAX: highest BSS attribute
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*/
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@ -4506,6 +4521,7 @@ enum nl80211_bss {
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NL80211_BSS_PARENT_TSF,
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NL80211_BSS_PARENT_BSSID,
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NL80211_BSS_CHAIN_SIGNAL,
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NL80211_BSS_FREQUENCY_OFFSET,
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/* keep last */
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__NL80211_BSS_AFTER_LAST,
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@ -365,6 +365,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
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[NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
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[NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
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[NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
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[NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
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[NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
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@ -638,6 +639,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
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[NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
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[NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
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[NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
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[NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
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};
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/* policy for the key attributes */
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@ -904,6 +906,9 @@ static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
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chan->center_freq))
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goto nla_put_failure;
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if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
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goto nla_put_failure;
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if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
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nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
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goto nla_put_failure;
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@ -1309,13 +1314,11 @@ static int nl80211_key_allowed(struct wireless_dev *wdev)
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}
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static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
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struct nlattr *tb)
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u32 freq)
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{
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struct ieee80211_channel *chan;
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if (tb == NULL)
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return NULL;
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chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
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chan = ieee80211_get_channel_khz(wiphy, freq);
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if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
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return NULL;
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return chan;
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@ -2770,13 +2773,17 @@ int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
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if (!attrs[NL80211_ATTR_WIPHY_FREQ])
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return -EINVAL;
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control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
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control_freq = MHZ_TO_KHZ(
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nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
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if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
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control_freq +=
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nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
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memset(chandef, 0, sizeof(*chandef));
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chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
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chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
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chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
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chandef->center_freq1 = control_freq;
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chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
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chandef->freq1_offset = control_freq % 1000;
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chandef->center_freq2 = 0;
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/* Primary channel not allowed */
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@ -2824,9 +2831,15 @@ int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
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} else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
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chandef->width =
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nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
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if (attrs[NL80211_ATTR_CENTER_FREQ1])
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if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
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chandef->center_freq1 =
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nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
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if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
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chandef->freq1_offset = nla_get_u32(
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attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
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else
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chandef->freq1_offset = 0;
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}
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if (attrs[NL80211_ATTR_CENTER_FREQ2])
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chandef->center_freq2 =
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nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
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@ -3259,6 +3272,9 @@ static int nl80211_send_chandef(struct sk_buff *msg,
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if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
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chandef->chan->center_freq))
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return -ENOBUFS;
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if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
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chandef->chan->freq_offset))
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return -ENOBUFS;
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switch (chandef->width) {
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case NL80211_CHAN_WIDTH_20_NOHT:
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case NL80211_CHAN_WIDTH_20:
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@ -8873,6 +8889,8 @@ static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
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goto nla_put_failure;
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if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
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nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
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nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
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res->channel->freq_offset) ||
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nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
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nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
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jiffies_to_msecs(jiffies - intbss->ts)))
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@ -9141,6 +9159,7 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
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enum nl80211_auth_type auth_type;
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struct key_parse key;
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bool local_state_change;
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u32 freq;
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if (!info->attrs[NL80211_ATTR_MAC])
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return -EINVAL;
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@ -9197,8 +9216,12 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
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return -EOPNOTSUPP;
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bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
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chan = nl80211_get_valid_chan(&rdev->wiphy,
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info->attrs[NL80211_ATTR_WIPHY_FREQ]);
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freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
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if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
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freq +=
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nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
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chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
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if (!chan)
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return -EINVAL;
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@ -9388,6 +9411,7 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
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struct cfg80211_assoc_request req = {};
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const u8 *bssid, *ssid;
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int err, ssid_len = 0;
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u32 freq;
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if (dev->ieee80211_ptr->conn_owner_nlportid &&
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dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
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@ -9407,8 +9431,11 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
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bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
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chan = nl80211_get_valid_chan(&rdev->wiphy,
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info->attrs[NL80211_ATTR_WIPHY_FREQ]);
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freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
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if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
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freq +=
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nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
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chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
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if (!chan)
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return -EINVAL;
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@ -10088,6 +10115,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
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struct cfg80211_connect_params connect;
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struct wiphy *wiphy;
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struct cfg80211_cached_keys *connkeys = NULL;
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u32 freq = 0;
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int err;
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memset(&connect, 0, sizeof(connect));
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@ -10158,14 +10186,21 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
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connect.prev_bssid =
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nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
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if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
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connect.channel = nl80211_get_valid_chan(
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wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
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if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
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freq = MHZ_TO_KHZ(nla_get_u32(
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info->attrs[NL80211_ATTR_WIPHY_FREQ]));
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if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
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freq +=
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nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
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if (freq) {
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connect.channel = nl80211_get_valid_chan(wiphy, freq);
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if (!connect.channel)
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return -EINVAL;
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} else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
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connect.channel_hint = nl80211_get_valid_chan(
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wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
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freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
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freq = MHZ_TO_KHZ(freq);
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connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
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if (!connect.channel_hint)
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return -EINVAL;
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}
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@ -16215,6 +16250,7 @@ int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
|
|||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
|
||||
NL80211_ATTR_PAD) ||
|
||||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
|
||||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
|
||||
(sig_dbm &&
|
||||
nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
|
||||
nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
|
||||
|
|
@ -16864,8 +16900,10 @@ void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
|
|||
|
||||
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
|
||||
(freq &&
|
||||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
|
||||
KHZ_TO_MHZ(freq))) ||
|
||||
(nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
|
||||
KHZ_TO_MHZ(freq)) ||
|
||||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
|
||||
freq % 1000))) ||
|
||||
(sig_dbm &&
|
||||
nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
|
||||
nla_put(msg, NL80211_ATTR_FRAME, len, frame))
|
||||
|
|
|
|||
Loading…
Reference in New Issue