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mac80211: move store skb ack code to its own function

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This patch moves the code handling SKBTX_WIFI_STATUS inside the TX path
into an extra function. This allows us to reuse it inside the 802.11 encap
offloading datapath.

Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20191029091304.7330-2-john@phrozen.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
John Crispin 2019-10-29 10:13:02 +01:00 committed by Johannes Berg
parent 7d13cf1e1d
commit 5d8983c8c3
1 changed files with 29 additions and 20 deletions
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49
net/mac80211/tx.c
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@ -2417,6 +2417,33 @@ static int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
return 0;
}
static int ieee80211_store_ack_skb(struct ieee80211_local *local,
struct sk_buff *skb,
u32 *info_flags)
{
struct sk_buff *ack_skb = skb_clone_sk(skb);
u16 info_id = 0;
if (ack_skb) {
unsigned long flags;
int id;
spin_lock_irqsave(&local->ack_status_lock, flags);
id = idr_alloc(&local->ack_status_frames, ack_skb,
1, 0x10000, GFP_ATOMIC);
spin_unlock_irqrestore(&local->ack_status_lock, flags);
if (id >= 0) {
info_id = id;
*info_flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
} else {
kfree_skb(ack_skb);
}
}
return info_id;
}
/**
* ieee80211_build_hdr - build 802.11 header in the given frame
* @sdata: virtual interface to build the header for
@ -2710,26 +2737,8 @@ static struct sk_buff *ieee80211_build_hdr(struct ieee80211_sub_if_data *sdata,
}
if (unlikely(!multicast && skb->sk &&
skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS)) {
struct sk_buff *ack_skb = skb_clone_sk(skb);
if (ack_skb) {
unsigned long flags;
int id;
spin_lock_irqsave(&local->ack_status_lock, flags);
id = idr_alloc(&local->ack_status_frames, ack_skb,
1, 0x10000, GFP_ATOMIC);
spin_unlock_irqrestore(&local->ack_status_lock, flags);
if (id >= 0) {
info_id = id;
info_flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
} else {
kfree_skb(ack_skb);
}
}
}
skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS))
info_id = ieee80211_store_ack_skb(local, skb, &info_flags);
/*
* If the skb is shared we need to obtain our own copy.