linux-kernel - [PATCH AUTOSEL 6.1 13/17] wifi: iwlwifi: mvm: fix iwl_mvm_scan

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Message-ID: <20240903192600.1108046-13-sashal@kernel.org>
Date: Tue,  3 Sep 2024 15:25:27 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Daniel Gabay <daniel.gabay@...el.com>,
	Ilan Peer <ilan.peer@...el.com>,
	Miri Korenblit <miriam.rachel.korenblit@...el.com>,
	Johannes Berg <johannes.berg@...el.com>,
	Sasha Levin <sashal@...nel.org>,
	kvalo@...nel.org,
	ayala.beker@...el.com,
	benjamin.berg@...el.com,
	linux-wireless@...r.kernel.org
Subject: [PATCH AUTOSEL 6.1 13/17] wifi: iwlwifi: mvm: fix iwl_mvm_scan_fits() calculation

From: Daniel Gabay <daniel.gabay@...el.com>

[ Upstream commit d44162280899c3fc2c6700e21e491e71c3c96e3d ]

The calculation should consider also the 6GHz IE's len, fix that.
In addition, in iwl_mvm_sched_scan_start() the scan_fits helper is
called only in case non_psc_incldued is true, but it should be called
regardless, fix that as well.

Signed-off-by: Daniel Gabay <daniel.gabay@...el.com>
Reviewed-by: Ilan Peer <ilan.peer@...el.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@...el.com>
Link: https://patch.msgid.link/20240825191257.7db825442fd2.I99f4d6587709de02072fd57957ec7472331c6b1d@changeid
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/intel/iwlwifi/mvm/scan.c | 23 ++++++++++---------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index b58441c2af730..20c5cc72e4269 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -824,8 +824,8 @@ static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
 	return ((n_ssids <= PROBE_OPTION_MAX) &&
 		(n_channels <= mvm->fw->ucode_capa.n_scan_channels) &
 		(ies->common_ie_len +
-		 ies->len[NL80211_BAND_2GHZ] +
-		 ies->len[NL80211_BAND_5GHZ] <=
+		 ies->len[NL80211_BAND_2GHZ] + ies->len[NL80211_BAND_5GHZ] +
+		 ies->len[NL80211_BAND_6GHZ] <=
 		 iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
 }
 
@@ -2935,18 +2935,16 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
 		params.n_channels = j;
 	}
 
-	if (non_psc_included &&
-	    !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) {
-		kfree(params.channels);
-		return -ENOBUFS;
+	if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) {
+		ret = -ENOBUFS;
+		goto out;
 	}
 
 	uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, &params, type);
-
-	if (non_psc_included)
-		kfree(params.channels);
-	if (uid < 0)
-		return uid;
+	if (uid < 0) {
+		ret = uid;
+		goto out;
+	}
 
 	ret = iwl_mvm_send_cmd(mvm, &hcmd);
 	if (!ret) {
@@ -2963,6 +2961,9 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
 		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
 	}
 
+out:
+	if (non_psc_included)
+		kfree(params.channels);
 	return ret;
 }
 
-- 
2.43.0