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b3231d353a
Add a simple convenience helper to allocate and zero fill an SKB for the use by a kunit test. Also provide a way to free it again in case that may be desirable. This simply mirrors the kunit_kmalloc API. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Reviewed-by: David Gow <davidgow@google.com> Link: https://msgid.link/20231220151952.415232-3-benjamin@sipsolutions.net [adjust file description as discussed] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* KUnit resource management helpers for SKBs (skbuff).
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*
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* Copyright (C) 2023 Intel Corporation
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*/
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#ifndef _KUNIT_SKBUFF_H
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#define _KUNIT_SKBUFF_H
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#include <kunit/resource.h>
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#include <linux/skbuff.h>
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static void kunit_action_kfree_skb(void *p)
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{
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kfree_skb((struct sk_buff *)p);
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}
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/**
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* kunit_zalloc_skb() - Allocate and initialize a resource managed skb.
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* @test: The test case to which the skb belongs
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* @len: size to allocate
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*
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* Allocate a new struct sk_buff with GFP_KERNEL, zero fill the give length
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* and add it as a resource to the kunit test for automatic cleanup.
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*
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* Returns: newly allocated SKB, or %NULL on error
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*/
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static inline struct sk_buff *kunit_zalloc_skb(struct kunit *test, int len,
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gfp_t gfp)
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{
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struct sk_buff *res = alloc_skb(len, GFP_KERNEL);
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if (!res || skb_pad(res, len))
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return NULL;
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if (kunit_add_action_or_reset(test, kunit_action_kfree_skb, res))
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return NULL;
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return res;
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}
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/**
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* kunit_kfree_skb() - Like kfree_skb except for allocations managed by KUnit.
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* @test: The test case to which the resource belongs.
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* @skb: The SKB to free.
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*/
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static inline void kunit_kfree_skb(struct kunit *test, struct sk_buff *skb)
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{
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if (!skb)
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return;
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kunit_release_action(test, kunit_action_kfree_skb, (void *)skb);
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}
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#endif /* _KUNIT_SKBUFF_H */
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