wpa_supplicant

2024-12-18 19:57:36 +03:00
parent bef9502455
commit bde5781c98
1 changed files with 73 additions and 0 deletions
@@ -0,0 +1,73 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: David Bauer <mail@david-bauer.net>
+Date: Sun, 30 Jan 2022 20:22:00 +0100
+Subject: [PATCH] nl80211: add extra-ies only if allowed by driver
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Upgrading wpa_supplicant from 2.9 to 2.10 breaks broadcom-wl
+based adapters. The reason for it is hostapd tries to install additional
+IEs for scanning while the driver does not support this.
+
+The kernel indicates the maximum number of bytes for additional scan IEs
+using the NL80211_ATTR_MAX_SCAN_IE_LEN attribute. Save this value and
+only add additional scan IEs in case the driver can accommodate these
+additional IEs.
+
+Reported-by: Étienne Morice <neon.emorice@mail.com>
+Tested-by: Étienne Morice <neon.emorice@mail.com>
+Signed-off-by: David Bauer <mail@david-bauer.net>
+
+Bug: http://lists.infradead.org/pipermail/hostap/2022-January/040178.html
+Bug-ArchLinux: https://bugs.archlinux.org/task/73495
+Bug-Debian: https://bugs.debian.org/1004524
+Origin: http://lists.infradead.org/pipermail/hostap/2022-January/040185.html
+---
+ src/drivers/driver.h              | 3 +++
+ src/drivers/driver_nl80211_capa.c | 4 ++++
+ src/drivers/driver_nl80211_scan.c | 2 +-
+ 3 files changed, 8 insertions(+), 1 deletion(-)
+
+diff --git a/src/drivers/driver.h b/src/drivers/driver.h
+index 4331782d897a..243e9b5cc4d8 100644
+--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
+@@ -2357,6 +2357,9 @@ struct wpa_driver_capa {
+ 	/** Maximum number of iterations in a single scan plan */
+ 	u32 max_sched_scan_plan_iterations;
+ 
+	/** Maximum number of extra IE bytes for scans */
+	u16 max_scan_ie_len;
+
+ 	/** Whether sched_scan (offloaded scanning) is supported */
+ 	int sched_scan_supported;
+ 
+diff --git a/src/drivers/driver_nl80211_capa.c b/src/drivers/driver_nl80211_capa.c
+index 26c1f41406d2..d5ba66b1073e 100644
+--- a/src/drivers/driver_nl80211_capa.c
+++ b/src/drivers/driver_nl80211_capa.c
+@@ -976,6 +976,10 @@ static int wiphy_info_handler(struct nl_msg *msg, void *arg)
+ 			nla_get_u32(tb[NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS]);
+ 	}
+ 
+	if (tb[NL80211_ATTR_MAX_SCAN_IE_LEN])
+		capa->max_scan_ie_len =
+			nla_get_u16(tb[NL80211_ATTR_MAX_SCAN_IE_LEN]);
+
+ 	if (tb[NL80211_ATTR_MAX_MATCH_SETS])
+ 		capa->max_match_sets =
+ 			nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
+diff --git a/src/drivers/driver_nl80211_scan.c b/src/drivers/driver_nl80211_scan.c
+index b055e684a9f8..a8ea8f2cf1d7 100644
+--- a/src/drivers/driver_nl80211_scan.c
+++ b/src/drivers/driver_nl80211_scan.c
+@@ -221,7 +221,7 @@ nl80211_scan_common(struct i802_bss *bss, u8 cmd,
+ 		wpa_printf(MSG_DEBUG, "nl80211: Passive scan requested");
+ 	}
+ 
+-	if (params->extra_ies) {
+	if (params->extra_ies && drv->capa.max_scan_ie_len >= params->extra_ies_len) {
+ 		wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
+ 			    params->extra_ies, params->extra_ies_len);
+ 		if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len,