Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /* xfrm_hash.c: Common hash table code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/memblock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/vmalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/xfrm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "xfrm_hash.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct hlist_head *xfrm_hash_alloc(unsigned int sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	struct hlist_head *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	if (sz <= PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		n = kzalloc(sz, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	else if (hashdist)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		n = vzalloc(sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		n = (struct hlist_head *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 			__get_free_pages(GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 					 get_order(sz));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	return n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) void xfrm_hash_free(struct hlist_head *n, unsigned int sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	if (sz <= PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		kfree(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	else if (hashdist)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		vfree(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		free_pages((unsigned long)n, get_order(sz));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) }