wifi: cfg80211: reject unsupported PMSR FTM location requests

PMSR FTM location request flags are syntactically valid, but they must
be rejected when the device capability does not advertise support for
them.

Return an error immediately after rejecting unsupported LCI or civic
location request bits so the request cannot reach the driver.

Fixes: 9bb7e0f24e7e7 ("cfg80211: add peer measurement with FTM initiator API")
Assisted-by: Codex:gpt-5.5
Assisted-by: Claude:claude-opus-4.8
Signed-off-by: Zhao Li <enderaoelyther@gmail.com>
Link: https://patch.msgid.link/20260612133710.93544-2-enderaoelyther@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/wireless/pmsr.c b/net/wireless/pmsr.c
index 4962456fda30e6962827a505f89b35a4e17335f9..34ecbc6644a36cc5b75a067a3e60d8879a3aa6f7 100644 (file)
--- a/net/wireless/pmsr.c
+++ b/net/wireless/pmsr.c
@@ -125,6 +125,7 @@ static int pmsr_parse_ftm(struct cfg80211_registered_device *rdev,
                NL_SET_ERR_MSG_ATTR(info->extack,
                                    tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI],
                                    "FTM: LCI request not supported");
+               return -EOPNOTSUPP;
        }
 
        out->ftm.request_civicloc =
@@ -133,6 +134,7 @@ static int pmsr_parse_ftm(struct cfg80211_registered_device *rdev,
                NL_SET_ERR_MSG_ATTR(info->extack,
                                    tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC],
                            "FTM: civic location request not supported");
+               return -EOPNOTSUPP;
        }
 
        out->ftm.trigger_based =