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[RFC,11/28] tcp: AccECN support to tcp_add_backlog

Message ID 1584524289-24187-11-git-send-email-ilpo.jarvinen@helsinki.fi
State New
Headers show
Series None | expand

Commit Message

Ilpo Järvinen March 18, 2020, 9:37 a.m. UTC 
From: Ilpo Järvinen <ilpo.jarvinen@cs.helsinki.fi>

AE flag needs to preserved for AccECN.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@cs.helsinki.fi>
---
 net/ipv4/tcp_ipv4.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index f18a2fbf2761..dab0c1b85e95 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1757,7 +1757,7 @@  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)) ||
 #ifdef CONFIG_TLS_DEVICE
 	    tail->decrypted != skb->decrypted ||
 #endif