2021-02-24 12:15:08 +00:00
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From a13827e9091c07e25cdeec9a402d74a27e2a1111 Mon Sep 17 00:00:00 2001
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From: "Jason A. Donenfeld" <Jason@zx2c4.com>
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Date: Mon, 22 Feb 2021 17:25:46 +0100
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Subject: [PATCH] wireguard: peer: put frequently used members above cache
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lines
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commit 5a0598695634a6bb4126818902dd9140cd9df8b6 upstream.
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The is_dead boolean is checked for every single packet, while the
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internal_id member is used basically only for pr_debug messages. So it
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makes sense to hoist up is_dead into some space formerly unused by a
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struct hole, while demoting internal_api to below the lowest struct
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cache line.
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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---
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drivers/net/wireguard/peer.h | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/drivers/net/wireguard/peer.h
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+++ b/drivers/net/wireguard/peer.h
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@@ -39,6 +39,7 @@ struct wg_peer {
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2021-03-04 19:51:39 +00:00
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struct prev_queue tx_queue, rx_queue;
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2021-02-24 12:15:08 +00:00
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struct sk_buff_head staged_packet_queue;
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int serial_work_cpu;
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+ bool is_dead;
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struct noise_keypairs keypairs;
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struct endpoint endpoint;
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struct dst_cache endpoint_cache;
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@@ -61,9 +62,8 @@ struct wg_peer {
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struct rcu_head rcu;
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struct list_head peer_list;
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struct list_head allowedips_list;
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- u64 internal_id;
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struct napi_struct napi;
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- bool is_dead;
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+ u64 internal_id;
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};
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struct wg_peer *wg_peer_create(struct wg_device *wg,
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