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-rw-r--r--net/ipv4/tcp.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 21bae9a..5901010 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2236,6 +2236,13 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
tp->thin_lto = val;
break;
+ case TCP_THIN_DUPACK:
+ if (val < 0 || val > 1)
+ err = -EINVAL;
+ else
+ tp->thin_dupack = val;
+ break;
+
case TCP_CORK:
/* When set indicates to always queue non-full frames.
* Later the user clears this option and we transmit