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authorJohannes Berg <johannes.berg@intel.com>2015-11-24 14:25:49 +0100
committerJohannes Berg <johannes.berg@intel.com>2015-12-04 14:43:32 +0100
commit5ee00dbd52c57f37d74306ce6e8db26171f599b3 (patch)
treecd4ea4db19e3dde3b2bdb6159e66e7fdc53971db /net
parentmac80211: move off-channel/mgmt-tx code to offchannel.c (diff)
downloadlinux-dev-5ee00dbd52c57f37d74306ce6e8db26171f599b3.tar.xz
linux-dev-5ee00dbd52c57f37d74306ce6e8db26171f599b3.zip
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>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/cfg.c18
-rw-r--r--net/mac80211/ieee80211_i.h5
-rw-r--r--net/mac80211/offchannel.c8
3 files changed, 13 insertions, 18 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index b8ef33e62851..2d1c4c35186d 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -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;
}
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index b03d5410a2e9..0c50031fadac 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -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);
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index b737437c9ac6..6a8178f4a675 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -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;
}