[PATCH AUTOSEL 5.0 14/99] mac80211: fix memory accounting with A-MSDU aggregation
From: Sasha Levin <sashal@kernel.org>
Date: 2019-05-07 06:08:18
Also in:
linux-wireless, lkml, stable
Subsystem:
mac80211, the rest · Maintainers:
Johannes Berg, Linus Torvalds
From: Felix Fietkau <nbd@nbd.name> [ Upstream commit eb9b64e3a9f8483e6e54f4e03b2ae14ae5db2690 ] skb->truesize can change due to memory reallocation or when adding extra fragments. Adjust fq->memory_usage accordingly Signed-off-by: Felix Fietkau <nbd@nbd.name> Acked-by: Toke Høiland-Jørgensen <redacted> Signed-off-by: Johannes Berg <redacted> Signed-off-by: Sasha Levin <sashal@kernel.org> --- net/mac80211/tx.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 928f13a208b0..714d80e48a10 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c@@ -3214,6 +3214,7 @@ static bool ieee80211_amsdu_aggregate(struct ieee80211_sub_if_data *sdata, u8 max_subframes = sta->sta.max_amsdu_subframes; int max_frags = local->hw.max_tx_fragments; int max_amsdu_len = sta->sta.max_amsdu_len; + int orig_truesize; __be16 len; void *data; bool ret = false;
@@ -3254,6 +3255,7 @@ static bool ieee80211_amsdu_aggregate(struct ieee80211_sub_if_data *sdata, if (!head || skb_is_gso(head)) goto out; + orig_truesize = head->truesize; orig_len = head->len; if (skb->len + head->len > max_amsdu_len)
@@ -3311,6 +3313,7 @@ static bool ieee80211_amsdu_aggregate(struct ieee80211_sub_if_data *sdata, *frag_tail = skb; out_recalc: + fq->memory_usage += head->truesize - orig_truesize; if (head->len != orig_len) { flow->backlog += head->len - orig_len; tin->backlog_bytes += head->len - orig_len;
--
2.20.1