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brcmfmac: make use of cfg80211_check_combinations() 

Use cfg80211_check_combinations() so we can bail out early when an
interface add or change results in an invalid combination.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Arend van Spriel 2015-08-20 22:06:05 +02:00 committed by Kalle Valo
parent 2bb66a8183
commit 39504a2d21
1 changed files with 42 additions and 2 deletions
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44
drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
View File

@ -469,6 +469,36 @@ brcmf_find_wpsie(const u8 *parse, u32 len)
return NULL;
}
static int brcmf_vif_change_validate(struct brcmf_cfg80211_info *cfg,
struct brcmf_cfg80211_vif *vif,
enum nl80211_iftype new_type)
{
int iftype_num[NUM_NL80211_IFTYPES];
struct brcmf_cfg80211_vif *pos;
memset(&iftype_num[0], 0, sizeof(iftype_num));
list_for_each_entry(pos, &cfg->vif_list, list)
if (pos == vif)
iftype_num[new_type]++;
else
iftype_num[pos->wdev.iftype]++;
return cfg80211_check_combinations(cfg->wiphy, 1, 0, iftype_num);
}
static int brcmf_vif_add_validate(struct brcmf_cfg80211_info *cfg,
enum nl80211_iftype new_type)
{
int iftype_num[NUM_NL80211_IFTYPES];
struct brcmf_cfg80211_vif *pos;
memset(&iftype_num[0], 0, sizeof(iftype_num));
list_for_each_entry(pos, &cfg->vif_list, list)
iftype_num[pos->wdev.iftype]++;
iftype_num[new_type]++;
return cfg80211_check_combinations(cfg->wiphy, 1, 0, iftype_num);
}
static void convert_key_from_CPU(struct brcmf_wsec_key *key,
struct brcmf_wsec_key_le *key_le)
@ -663,8 +693,14 @@ static struct wireless_dev *brcmf_cfg80211_add_iface(struct wiphy *wiphy,
struct vif_params *params)
{
struct wireless_dev *wdev;
int err;
brcmf_dbg(TRACE, "enter: %s type %d\n", name, type);
err = brcmf_vif_add_validate(wiphy_to_cfg(wiphy), type);
if (err) {
brcmf_err("iface validation failed: err=%d\n", err);
return ERR_PTR(err);
}
switch (type) {
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_STATION:
@ -823,8 +859,12 @@ brcmf_cfg80211_change_iface(struct wiphy *wiphy, struct net_device *ndev,
s32 ap = 0;
s32 err = 0;
brcmf_dbg(TRACE, "Enter, ndev=%p, type=%d\n", ndev, type);
brcmf_dbg(TRACE, "Enter, idx=%d, type=%d\n", ifp->bssidx, type);
err = brcmf_vif_change_validate(wiphy_to_cfg(wiphy), vif, type);
if (err) {
brcmf_err("iface validation failed: err=%d\n", err);
return err;
}
switch (type) {
case NL80211_IFTYPE_MONITOR:
case NL80211_IFTYPE_WDS: