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a4e9f8e328
With deployments having upwards of 600k peers now, this somewhat heavy
structure could benefit from more fine-grained allocations.
Specifically, instead of using a 2048-byte slab for a 1544-byte object,
we can now use 1544-byte objects directly, thus saving almost 25%
per-peer, or with 600k peers, that's a savings of 303 MiB. This also
makes wireguard's memory usage more transparent in tools like slabtop
and /proc/slabinfo.
Fixes: 8b5553ace8 ("wireguard: queueing: get rid of per-peer ring buffers")
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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*/
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#include "version.h"
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#include "device.h"
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#include "noise.h"
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#include "queueing.h"
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#include "ratelimiter.h"
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#include "netlink.h"
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#include <uapi/linux/wireguard.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/genetlink.h>
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#include <net/rtnetlink.h>
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static int __init mod_init(void)
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{
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int ret;
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#ifdef DEBUG
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if (!wg_allowedips_selftest() || !wg_packet_counter_selftest() ||
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!wg_ratelimiter_selftest())
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return -ENOTRECOVERABLE;
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#endif
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wg_noise_init();
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ret = wg_peer_init();
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if (ret < 0)
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goto err_peer;
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ret = wg_device_init();
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if (ret < 0)
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goto err_device;
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ret = wg_genetlink_init();
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if (ret < 0)
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goto err_netlink;
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pr_info("WireGuard " WIREGUARD_VERSION " loaded. See www.wireguard.com for information.\n");
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pr_info("Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.\n");
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return 0;
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err_netlink:
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wg_device_uninit();
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err_device:
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wg_peer_uninit();
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err_peer:
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return ret;
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}
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static void __exit mod_exit(void)
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{
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wg_genetlink_uninit();
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wg_device_uninit();
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wg_peer_uninit();
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}
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module_init(mod_init);
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module_exit(mod_exit);
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MODULE_LICENSE("GPL v2");
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MODULE_DESCRIPTION("WireGuard secure network tunnel");
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MODULE_AUTHOR("Jason A. Donenfeld <Jason@zx2c4.com>");
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MODULE_VERSION(WIREGUARD_VERSION);
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MODULE_ALIAS_RTNL_LINK(KBUILD_MODNAME);
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MODULE_ALIAS_GENL_FAMILY(WG_GENL_NAME);
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