[PATCH V2 0/5] nl802111/brcmfmac: wowlan netdetect fixes

[PATCH V2 0/5] nl802111/brcmfmac: wowlan netdetect fixes

[Arend van Spriel]

This series has a fix for nl80211 regarding validation of wowlan
netdetect. It has been discussed with Johannes to take this through
the wireless-drivers-next repository so here it is.

* fix validation of wowlan netdetect parameters in nl80211.
* fix wowlan netdetect support.
* add new cfg80211 callback.

The series is intended for 4.11 and applies to the master branch of the
wireless-drivers-next repository.

changelog:
 V2: fix checkpatch error in patch 4/5.

Arend van Spriel (5):
  nl80211: fix validation of scheduled scan info for wowlan netdetect
  brcmfmac: provide a value for struct wowlan_support::max_nd_match_sets
  brcmfmac: fix handling firmware results for wowl netdetect
  brcmfmac: allow wowlan support to be per device
  brcmfmac: add .update_connect_params() callback

 .../broadcom/brcm80211/brcmfmac/cfg80211.c         | 52 ++++++++++++++++++----
 net/wireless/nl80211.c                             | 10 +++--
 2 files changed, 50 insertions(+), 12 deletions(-)

--
1.9.1

[PATCH V2 1/5] nl80211: fix validation of scheduled scan info for wowlan netdetect

[Arend van Spriel]

For wowlan netdetect a separate limit is defined for the number of
matchsets. Currently, this limit is ignored and the regular limit
for scheduled scan matchsets, ie. struct wiphy::max_match_sets, is
used for the net-detect case as well.

Cc: Johannes Berg <johannes@sipsolutions.net>
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
---
 net/wireless/nl80211.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index ef5eff93..90833a4 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -6850,7 +6850,7 @@ static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)

 static struct cfg80211_sched_scan_request *
 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
-			 struct nlattr **attrs)
+			 struct nlattr **attrs, int max_match_sets)
 {
 	struct cfg80211_sched_scan_request *request;
 	struct nlattr *attr;
@@ -6915,7 +6915,7 @@ static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
 	if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
 		n_match_sets = 1;

-	if (n_match_sets > wiphy->max_match_sets)
+	if (n_match_sets > max_match_sets)
 		return ERR_PTR(-EINVAL);

 	if (attrs[NL80211_ATTR_IE])
@@ -7189,7 +7189,8 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
 		return -EINPROGRESS;

 	sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
-						  info->attrs);
+						  info->attrs,
+						  rdev->wiphy.max_match_sets);

 	err = PTR_ERR_OR_ZERO(sched_scan_req);
 	if (err)
@@ -9966,7 +9967,8 @@ static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
 	if (err)
 		goto out;

-	trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
+	trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
+						   wowlan->max_nd_match_sets);
 	err = PTR_ERR_OR_ZERO(trig->nd_config);
 	if (err)
 		trig->nd_config = NULL;
--
1.9.1

[PATCH V2 2/5] brcmfmac: provide a value for struct wowlan_support::max_nd_match_sets

[Arend van Spriel]

The driver advertises support for WOWLAN_NETDETECT but did not specify
maximum amount of netdetect match sets. This was no issue due to a bug
in nl80211. As that has been fixed, brcmfmac also needs fixing.

Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index ec1171c..302a78d 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -6358,6 +6358,8 @@ static void brcmf_wiphy_wowl_params(struct wiphy *wiphy, struct brcmf_if *ifp)
 	if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_PNO)) {
 		if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL_ND)) {
 			brcmf_wowlan_support.flags |= WIPHY_WOWLAN_NET_DETECT;
+			brcmf_wowlan_support.max_nd_match_sets =
+				BRCMF_PNO_MAX_PFN_COUNT;
 			init_waitqueue_head(&cfg->wowl.nd_data_wait);
 		}
 	}
-- 
1.9.1

Re: [PATCH V2 2/5] brcmfmac: provide a value for struct wowlan_support::max_nd_match_sets

[Johannes Berg]

And to make it show up in patchwork at the right place:

Kalle, you can ignore patch 1, I'm handling it, but you need to apply
these before I can, the patch series order was wrong.

johannes

Re: [PATCH V2 2/5] brcmfmac: provide a value for struct wowlan_support::max_nd_match_sets

[Kalle Valo]

Johannes Berg <johannes@sipsolutions.net> writes:

> And to make it show up in patchwork at the right place:
>
> Kalle, you can ignore patch 1, I'm handling it, but you need to apply
> these before I can, the patch series order was wrong.

Haha :) Thank you, this is the best way to remind me about something.

-- 
Kalle Valo

Re: [V2, 2/5] brcmfmac: provide a value for struct wowlan_support::max_nd_match_sets

[Kalle Valo]

Arend Van Spriel <arend.vanspriel@broadcom.com> wrote:
> The driver advertises support for WOWLAN_NETDETECT but did not specify
> maximum amount of netdetect match sets. This was no issue due to a bug
> in nl80211. As that has been fixed, brcmfmac also needs fixing.
> 
> Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
> Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
> Reviewed-by: Franky Lin <franky.lin@broadcom.com>
> Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>

4 patches applied to wireless-drivers-next.git, thanks.

2ef0359031b9 brcmfmac: provide a value for struct wowlan_support::max_nd_match_sets
d29afe91af59 brcmfmac: fix handling firmware results for wowl netdetect
0b57010fc18e brcmfmac: allow wowlan support to be per device
2a2a5d1835b6 brcmfmac: add .update_connect_params() callback

-- 
https://patchwork.kernel.org/patch/9541755/

Documentation about submitting wireless patches and checking status
from patchwork:

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

[PATCH V2 3/5] brcmfmac: fix handling firmware results for wowl netdetect

[Arend van Spriel]

For wowl netdetect the event data changed for newer chips. This
was recently fixed for scheduled scan, but same change is needed
for wowl netdetect. Removing now pointles += operation from both
result handlers.

Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index 302a78d..c81d78f 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -3330,7 +3330,6 @@ static int brcmf_start_internal_escan(struct brcmf_if *ifp,
 		goto out_err;
 	}
 
-	data += sizeof(struct brcmf_pno_scanresults_le);
 	netinfo_start = brcmf_get_netinfo_array(pfn_result);
 
 	for (i = 0; i < result_count; i++) {
@@ -3478,8 +3477,7 @@ static s32 brcmf_config_wowl_pattern(struct brcmf_if *ifp, u8 cmd[4],
 		return -EINVAL;
 	}
 
-	data += sizeof(struct brcmf_pno_scanresults_le);
-	netinfo = (struct brcmf_pno_net_info_le *)data;
+	netinfo = brcmf_get_netinfo_array(pfn_result);
 	memcpy(cfg->wowl.nd->ssid.ssid, netinfo->SSID, netinfo->SSID_len);
 	cfg->wowl.nd->ssid.ssid_len = netinfo->SSID_len;
 	cfg->wowl.nd->n_channels = 1;
-- 
1.9.1

[PATCH V2 4/5] brcmfmac: allow wowlan support to be per device

[Arend van Spriel]

The wowlan support is (partially) determined dynamic by checking the
device/firmware capabilities. So they can differ per device. So it
is not possible to use a static global. Instead use the global as a
template and use kmemdup(). When kmemdup() fails the template is used
unmodified.

Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
---
 V2: fix checkpatch error, ie. line over 80 characters.
---
 .../broadcom/brcm80211/brcmfmac/cfg80211.c         | 26 ++++++++++++++++------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index c81d78f..ab1f9f2 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -6339,7 +6339,7 @@ static void brcmf_wiphy_pno_params(struct wiphy *wiphy)
 }

 #ifdef CONFIG_PM
-static struct wiphy_wowlan_support brcmf_wowlan_support = {
+static const struct wiphy_wowlan_support brcmf_wowlan_support = {
 	.flags = WIPHY_WOWLAN_MAGIC_PKT | WIPHY_WOWLAN_DISCONNECT,
 	.n_patterns = BRCMF_WOWL_MAXPATTERNS,
 	.pattern_max_len = BRCMF_WOWL_MAXPATTERNSIZE,
@@ -6352,21 +6352,29 @@ static void brcmf_wiphy_wowl_params(struct wiphy *wiphy, struct brcmf_if *ifp)
 {
 #ifdef CONFIG_PM
 	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
+	struct wiphy_wowlan_support *wowl;
+
+	wowl = kmemdup(&brcmf_wowlan_support, sizeof(brcmf_wowlan_support),
+		       GFP_KERNEL);
+	if (!wowl) {
+		brcmf_err("only support basic wowlan features\n");
+		wiphy->wowlan = &brcmf_wowlan_support;
+		return;
+	}

 	if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_PNO)) {
 		if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL_ND)) {
-			brcmf_wowlan_support.flags |= WIPHY_WOWLAN_NET_DETECT;
-			brcmf_wowlan_support.max_nd_match_sets =
-				BRCMF_PNO_MAX_PFN_COUNT;
+			wowl->flags |= WIPHY_WOWLAN_NET_DETECT;
+			wowl->max_nd_match_sets = BRCMF_PNO_MAX_PFN_COUNT;
 			init_waitqueue_head(&cfg->wowl.nd_data_wait);
 		}
 	}
 	if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL_GTK)) {
-		brcmf_wowlan_support.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY;
-		brcmf_wowlan_support.flags |= WIPHY_WOWLAN_GTK_REKEY_FAILURE;
+		wowl->flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY;
+		wowl->flags |= WIPHY_WOWLAN_GTK_REKEY_FAILURE;
 	}

-	wiphy->wowlan = &brcmf_wowlan_support;
+	wiphy->wowlan = wowl;
 #endif
 }

@@ -6747,6 +6755,10 @@ static void brcmf_free_wiphy(struct wiphy *wiphy)
 		kfree(wiphy->bands[NL80211_BAND_5GHZ]->channels);
 		kfree(wiphy->bands[NL80211_BAND_5GHZ]);
 	}
+#if IS_ENABLED(CONFIG_PM)
+	if (wiphy->wowlan != &brcmf_wowlan_support)
+		kfree(wiphy->wowlan);
+#endif
 	wiphy_free(wiphy);
 }

--
1.9.1

[PATCH V2 5/5] brcmfmac: add .update_connect_params() callback

[Arend van Spriel]

Add support for the .update_connect_params() callback for roaming
or subsequent (re)association.

Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
---
 .../broadcom/brcm80211/brcmfmac/cfg80211.c         | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index ab1f9f2..0e28d07 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -5067,6 +5067,29 @@ static int brcmf_cfg80211_tdls_oper(struct wiphy *wiphy,
 	return ret;
 }
 
+static int
+brcmf_cfg80211_update_conn_params(struct wiphy *wiphy,
+				  struct net_device *ndev,
+				  struct cfg80211_connect_params *sme,
+				  u32 changed)
+{
+	struct brcmf_if *ifp;
+	int err;
+
+	if (!(changed & UPDATE_ASSOC_IES))
+		return 0;
+
+	ifp = netdev_priv(ndev);
+	err = brcmf_vif_set_mgmt_ie(ifp->vif, BRCMF_VNDR_IE_ASSOCREQ_FLAG,
+				    sme->ie, sme->ie_len);
+	if (err)
+		brcmf_err("Set Assoc REQ IE Failed\n");
+	else
+		brcmf_dbg(TRACE, "Applied Vndr IEs for Assoc request\n");
+
+	return err;
+}
+
 #ifdef CONFIG_PM
 static int
 brcmf_cfg80211_set_rekey_data(struct wiphy *wiphy, struct net_device *ndev,
@@ -5134,6 +5157,7 @@ static int brcmf_cfg80211_tdls_oper(struct wiphy *wiphy,
 	.crit_proto_start = brcmf_cfg80211_crit_proto_start,
 	.crit_proto_stop = brcmf_cfg80211_crit_proto_stop,
 	.tdls_oper = brcmf_cfg80211_tdls_oper,
+	.update_connect_params = brcmf_cfg80211_update_conn_params,
 };
 
 struct brcmf_cfg80211_vif *brcmf_alloc_vif(struct brcmf_cfg80211_info *cfg,
-- 
1.9.1