[PATCH net-next 11/11] net/tls: fix socket wmem accounting on fallback with netem

[Jakub Kicinski]

netem runs skb_orphan_partial() which "disconnects" the skb
from normal TCP write memory accounting.  We should not adjust
sk->sk_wmem_alloc on the fallback path for such skbs.

Fixes: e8f69799810c ("net/tls: Add generic NIC offload infrastructure")
Signed-off-by: Jakub Kicinski <jakub.kicin...@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vanderme...@netronome.com>
---
 net/tls/tls_device_fallback.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/tls/tls_device_fallback.c b/net/tls/tls_device_fallback.c
index 1d2d804ac633..9070d68a92a4 100644
--- a/net/tls/tls_device_fallback.c
+++ b/net/tls/tls_device_fallback.c
@@ -209,6 +209,10 @@ static void complete_skb(struct sk_buff *nskb, struct 
sk_buff *skb, int headln)
 
        update_chksum(nskb, headln);
 
+       /* sock_efree means skb must gone through skb_orphan_partial() */
+       if (nskb->destructor == sock_efree)
+               return;
+
        delta = nskb->truesize - skb->truesize;
        if (likely(delta < 0))
                WARN_ON_ONCE(refcount_sub_and_test(-delta, &sk->sk_wmem_alloc));
-- 
2.21.0