From: Ilpo Järvinen <i...@kernel.org>
AE flag needs to be preserved for AccECN.
Signed-off-by: Ilpo Järvinen <i...@kernel.org>
Signed-off-by: Chia-Yu Chang <chia-yu.ch...@nokia-bell-labs.com>
Reviewed-by: Eric Dumazet <eduma...@google.com>
---
net/ipv4/tcp_ipv4.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index b0b8bbfa9386..24ec0ade8ae9 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2057,7 +2057,8 @@ bool tcp_add_backlog(struct sock *sk, struct sk_buff *skb,
!((TCP_SKB_CB(tail)->tcp_flags &
TCP_SKB_CB(skb)->tcp_flags) & TCPHDR_ACK) ||
((TCP_SKB_CB(tail)->tcp_flags ^
- TCP_SKB_CB(skb)->tcp_flags) & (TCPHDR_ECE | TCPHDR_CWR)) ||
+ TCP_SKB_CB(skb)->tcp_flags) &
+ (TCPHDR_ECE | TCPHDR_CWR | TCPHDR_AE)) ||
!tcp_skb_can_collapse_rx(tail, skb) ||
thtail->doff != th->doff ||
memcmp(thtail + 1, th + 1, hdrlen - sizeof(*th)))
--
2.34.1
