From: Martin KaFai Lau <kafai@fb.com>
Date: Fri, 1 Dec 2017 20:52:32 +0000 (-0800)
Subject: tcp: Enable 2nd listener hashtable in TCP
X-Git-Tag: v4.16-rc1~123^2~437^2
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=27da6d37e207e7ad9c692d3d0924f09e63a98e38;p=linux.git

tcp: Enable 2nd listener hashtable in TCP

Enable the second listener hashtable in TCP.
The scale is the same as UDP which is one slot per 2MB.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index bf97317e6c97..180311636023 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -3577,6 +3577,9 @@ void __init tcp_init(void)
 	percpu_counter_init(&tcp_sockets_allocated, 0, GFP_KERNEL);
 	percpu_counter_init(&tcp_orphan_count, 0, GFP_KERNEL);
 	inet_hashinfo_init(&tcp_hashinfo);
+	inet_hashinfo2_init(&tcp_hashinfo, "tcp_listen_portaddr_hash",
+			    thash_entries, 21,  /* one slot per 2 MB*/
+			    0, 64 * 1024);
 	tcp_hashinfo.bind_bucket_cachep =
 		kmem_cache_create("tcp_bind_bucket",
 				  sizeof(struct inet_bind_bucket), 0,