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nl80211/cfg80211: add support for non EDCA based ranging measurement

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Add support for requesting that the ranging measurement will use
the trigger-based / non trigger-based flow instead of the EDCA based
flow.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/20200131111300.891737-2-luca@coelho.fi
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Avraham Stern 2020-01-31 13:12:38 +02:00 committed by Johannes Berg
parent 95247705c4
commit efb5520d0e
5 changed files with 84 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
include/net/cfg80211.h
View File

@ -3270,6 +3270,12 @@ struct cfg80211_pmsr_result {
* @ftmr_retries: number of retries for FTM request
* @request_lci: request LCI information
* @request_civicloc: request civic location information
* @trigger_based: use trigger based ranging for the measurement
* If neither @trigger_based nor @non_trigger_based is set,
* EDCA based ranging will be used.
* @non_trigger_based: use non trigger based ranging for the measurement
* If neither @trigger_based nor @non_trigger_based is set,
* EDCA based ranging will be used.
*
* See also nl80211 for the respective attribute documentation.
*/
@ -3279,7 +3285,9 @@ struct cfg80211_pmsr_ftm_request_peer {
u8 requested:1,
asap:1,
request_lci:1,
request_civicloc:1;
request_civicloc:1,
trigger_based:1,
non_trigger_based:1;
u8 num_bursts_exp;
u8 burst_duration;
u8 ftms_per_burst;
@ -4435,6 +4443,8 @@ struct wiphy_iftype_ext_capab {
* forbid using the value 15 to let the responder pick)
* @ftm.max_ftms_per_burst: maximum FTMs per burst supported (set to 0 if
* not limited)
* @ftm.trigger_based: trigger based ranging measurement is supported
* @ftm.non_trigger_based: non trigger based ranging measurement is supported
*/
struct cfg80211_pmsr_capabilities {
unsigned int max_peers;
@ -4450,7 +4460,9 @@ struct cfg80211_pmsr_capabilities {
asap:1,
non_asap:1,
request_lci:1,
request_civicloc:1;
request_civicloc:1,
trigger_based:1,
non_trigger_based:1;
} ftm;
};

24
include/uapi/linux/nl80211.h
View File

@ -6323,12 +6323,14 @@ enum nl80211_ftm_responder_stats {
* @NL80211_PREAMBLE_HT: HT preamble
* @NL80211_PREAMBLE_VHT: VHT preamble
* @NL80211_PREAMBLE_DMG: DMG preamble
* @NL80211_PREAMBLE_HE: HE preamble
*/
enum nl80211_preamble {
NL80211_PREAMBLE_LEGACY,
NL80211_PREAMBLE_HT,
NL80211_PREAMBLE_VHT,
NL80211_PREAMBLE_DMG,
NL80211_PREAMBLE_HE,
};
/**
@ -6521,6 +6523,10 @@ enum nl80211_peer_measurement_attrs {
* is valid)
* @NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST: u32 attribute indicating
* the maximum FTMs per burst (if not present anything is valid)
* @NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED: flag attribute indicating if
* trigger based ranging measurement is supported
* @NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED: flag attribute indicating
* if non trigger based ranging measurement is supported
*
* @NUM_NL80211_PMSR_FTM_CAPA_ATTR: internal
* @NL80211_PMSR_FTM_CAPA_ATTR_MAX: highest attribute number
@ -6536,6 +6542,8 @@ enum nl80211_peer_measurement_ftm_capa {
NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED,
NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED,
/* keep last */
NUM_NL80211_PMSR_FTM_CAPA_ATTR,
@ -6565,6 +6573,20 @@ enum nl80211_peer_measurement_ftm_capa {
* @NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI: request LCI data (flag)
* @NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC: request civic location data
* (flag)
* @NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED: request trigger based ranging
* measurement (flag).
* This attribute and %NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED are
* mutually exclusive.
* if neither %NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED nor
* %NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED is set, EDCA based
* ranging will be used.
* @NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED: request non trigger based
* ranging measurement (flag)
* This attribute and %NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED are
* mutually exclusive.
* if neither %NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED nor
* %NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED is set, EDCA based
* ranging will be used.
*
* @NUM_NL80211_PMSR_FTM_REQ_ATTR: internal
* @NL80211_PMSR_FTM_REQ_ATTR_MAX: highest attribute number
@ -6581,6 +6603,8 @@ enum nl80211_peer_measurement_ftm_req {
NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES,
NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI,
NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC,
NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED,
NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED,
/* keep last */
NUM_NL80211_PMSR_FTM_REQ_ATTR,

6
net/wireless/core.c
View File

@ -693,8 +693,14 @@ int wiphy_register(struct wiphy *wiphy)
~(BIT(NL80211_PREAMBLE_LEGACY) |
BIT(NL80211_PREAMBLE_HT) |
BIT(NL80211_PREAMBLE_VHT) |
BIT(NL80211_PREAMBLE_HE) |
BIT(NL80211_PREAMBLE_DMG))))
return -EINVAL;
if (WARN_ON((wiphy->pmsr_capa->ftm.trigger_based ||
wiphy->pmsr_capa->ftm.non_trigger_based) &&
!(wiphy->pmsr_capa->ftm.preambles &
BIT(NL80211_PREAMBLE_HE))))
return -EINVAL;
if (WARN_ON(wiphy->pmsr_capa->ftm.bandwidths &
~(BIT(NL80211_CHAN_WIDTH_20_NOHT) |
BIT(NL80211_CHAN_WIDTH_20) |

8
net/wireless/nl80211.c
View File

@ -276,6 +276,8 @@ nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
[NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
[NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
[NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
};
static const struct nla_policy
@ -1885,6 +1887,12 @@ nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
cap->ftm.max_ftms_per_burst))
return -ENOBUFS;
if (cap->ftm.trigger_based &&
nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
return -ENOBUFS;
if (cap->ftm.non_trigger_based &&
nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
return -ENOBUFS;
nla_nest_end(msg, ftm);
return 0;

32
net/wireless/pmsr.c
View File

@ -126,6 +126,38 @@ static int pmsr_parse_ftm(struct cfg80211_registered_device *rdev,
"FTM: civic location request not supported");
}
out->ftm.trigger_based =
!!tb[NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED];
if (out->ftm.trigger_based && !capa->ftm.trigger_based) {
NL_SET_ERR_MSG_ATTR(info->extack,
tb[NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED],
"FTM: trigger based ranging is not supported");
return -EINVAL;
}
out->ftm.non_trigger_based =
!!tb[NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED];
if (out->ftm.non_trigger_based && !capa->ftm.non_trigger_based) {
NL_SET_ERR_MSG_ATTR(info->extack,
tb[NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED],
"FTM: trigger based ranging is not supported");
return -EINVAL;
}
if (out->ftm.trigger_based && out->ftm.non_trigger_based) {
NL_SET_ERR_MSG(info->extack,
"FTM: can't set both trigger based and non trigger based");
return -EINVAL;
}
if ((out->ftm.trigger_based || out->ftm.non_trigger_based) &&
out->ftm.preamble != NL80211_PREAMBLE_HE) {
NL_SET_ERR_MSG_ATTR(info->extack,
tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE],
"FTM: non EDCA based ranging must use HE preamble");
return -EINVAL;
}
return 0;
}