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mac80211: simplify ack_skb handling 

Since the cookie is assigned inside ieee80211_make_ack_skb()
now, we no longer need to return the ack_skb as the cookie
and can simplify the function's return and the callers. Also
rename it to ieee80211_attach_ack_skb() to more accurately
reflect its purpose.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2015-11-24 14:25:49 +01:00
parent a2fcfccbad
commit 5ee00dbd52
3 changed files with 13 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
net/mac80211/cfg.c
View File

@ -2987,9 +2987,8 @@ u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
return local->roc_cookie_counter;
}
struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
struct sk_buff *skb, u64 *cookie,
gfp_t gfp)
int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
u64 *cookie, gfp_t gfp)
{
unsigned long spin_flags;
struct sk_buff *ack_skb;
@ -2997,7 +2996,7 @@ struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
ack_skb = skb_copy(skb, gfp);
if (!ack_skb)
return ERR_PTR(-ENOMEM);
return -ENOMEM;
spin_lock_irqsave(&local->ack_status_lock, spin_flags);
id = idr_alloc(&local->ack_status_frames, ack_skb,
@ -3006,7 +3005,7 @@ struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
if (id < 0) {
kfree_skb(ack_skb);
return ERR_PTR(-ENOMEM);
return -ENOMEM;
}
IEEE80211_SKB_CB(skb)->ack_frame_id = id;
@ -3014,7 +3013,7 @@ struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
*cookie = ieee80211_mgmt_tx_cookie(local);
IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
return ack_skb;
return 0;
}
static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
@ -3092,7 +3091,7 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct ieee80211_qos_hdr *nullfunc;
struct sk_buff *skb, *ack_skb;
struct sk_buff *skb;
int size = sizeof(*nullfunc);
__le16 fc;
bool qos;
@ -3160,10 +3159,9 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
if (qos)
nullfunc->qos_ctrl = cpu_to_le16(7);
ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
if (IS_ERR(ack_skb)) {
ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
if (ret) {
kfree_skb(skb);
ret = PTR_ERR(ack_skb);
goto unlock;
}

5
net/mac80211/ieee80211_i.h
View File

@ -1484,9 +1484,8 @@ void ieee80211_configure_filter(struct ieee80211_local *local);
u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
struct sk_buff *skb, u64 *cookie,
gfp_t gfp);
int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
u64 *cookie, gfp_t gfp);
/* STA code */
void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);

8
net/mac80211/offchannel.c
View File

@ -733,7 +733,7 @@ int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
{
struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb, *ack_skb;
struct sk_buff *skb;
struct sta_info *sta;
const struct ieee80211_mgmt *mgmt = (void *)params->buf;
bool need_offchan = false;
@ -876,10 +876,8 @@ int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
/* make a copy to preserve the frame contents
* in case of encryption.
*/
ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
GFP_KERNEL);
if (IS_ERR(ack_skb)) {
ret = PTR_ERR(ack_skb);
ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_KERNEL);
if (ret) {
kfree_skb(skb);
goto out_unlock;
}