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84 lines
2.6 KiB
Diff
84 lines
2.6 KiB
Diff
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From: Arend van Spriel <arend@broadcom.com>
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Date: Thu, 20 Aug 2015 22:06:05 +0200
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Subject: [PATCH] brcmfmac: make use of cfg80211_check_combinations()
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Use cfg80211_check_combinations() so we can bail out early when an
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interface add or change results in an invalid combination.
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Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
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Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
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Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
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Signed-off-by: Arend van Spriel <arend@broadcom.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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--- a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
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+++ b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
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@@ -469,6 +469,36 @@ brcmf_find_wpsie(const u8 *parse, u32 le
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return NULL;
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}
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+static int brcmf_vif_change_validate(struct brcmf_cfg80211_info *cfg,
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+ struct brcmf_cfg80211_vif *vif,
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+ enum nl80211_iftype new_type)
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+{
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+ int iftype_num[NUM_NL80211_IFTYPES];
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+ struct brcmf_cfg80211_vif *pos;
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+
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+ memset(&iftype_num[0], 0, sizeof(iftype_num));
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+ list_for_each_entry(pos, &cfg->vif_list, list)
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+ if (pos == vif)
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+ iftype_num[new_type]++;
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+ else
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+ iftype_num[pos->wdev.iftype]++;
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+
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+ return cfg80211_check_combinations(cfg->wiphy, 1, 0, iftype_num);
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+}
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+
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+static int brcmf_vif_add_validate(struct brcmf_cfg80211_info *cfg,
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+ enum nl80211_iftype new_type)
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+{
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+ int iftype_num[NUM_NL80211_IFTYPES];
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+ struct brcmf_cfg80211_vif *pos;
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+
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+ memset(&iftype_num[0], 0, sizeof(iftype_num));
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+ list_for_each_entry(pos, &cfg->vif_list, list)
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+ iftype_num[pos->wdev.iftype]++;
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+
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+ iftype_num[new_type]++;
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+ return cfg80211_check_combinations(cfg->wiphy, 1, 0, iftype_num);
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+}
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static void convert_key_from_CPU(struct brcmf_wsec_key *key,
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struct brcmf_wsec_key_le *key_le)
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@@ -663,8 +693,14 @@ static struct wireless_dev *brcmf_cfg802
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struct vif_params *params)
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{
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struct wireless_dev *wdev;
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+ int err;
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brcmf_dbg(TRACE, "enter: %s type %d\n", name, type);
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+ err = brcmf_vif_add_validate(wiphy_to_cfg(wiphy), type);
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+ if (err) {
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+ brcmf_err("iface validation failed: err=%d\n", err);
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+ return ERR_PTR(err);
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+ }
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switch (type) {
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case NL80211_IFTYPE_ADHOC:
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case NL80211_IFTYPE_STATION:
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@@ -823,8 +859,12 @@ brcmf_cfg80211_change_iface(struct wiphy
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s32 ap = 0;
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s32 err = 0;
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- brcmf_dbg(TRACE, "Enter, ndev=%p, type=%d\n", ndev, type);
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-
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+ brcmf_dbg(TRACE, "Enter, idx=%d, type=%d\n", ifp->bssidx, type);
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+ err = brcmf_vif_change_validate(wiphy_to_cfg(wiphy), vif, type);
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+ if (err) {
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+ brcmf_err("iface validation failed: err=%d\n", err);
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+ return err;
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+ }
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switch (type) {
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case NL80211_IFTYPE_MONITOR:
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case NL80211_IFTYPE_WDS:
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