| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * KUnit resource management helpers for SKBs (skbuff). |
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| 4 | * |
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| 5 | * Copyright (C) 2023 Intel Corporation |
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| 6 | */ |
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| 7 | |
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| 8 | #ifndef _KUNIT_SKBUFF_H |
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| 9 | #define _KUNIT_SKBUFF_H |
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| 10 | |
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| 11 | #include <kunit/resource.h> |
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| 12 | #include <linux/skbuff.h> |
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| 13 | |
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| 14 | static void kunit_action_kfree_skb(void *p) |
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| 15 | { |
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| 16 | kfree_skb(skb: (struct sk_buff *)p); |
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| 17 | } |
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| 18 | |
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| 19 | /** |
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| 20 | * kunit_zalloc_skb() - Allocate and initialize a resource managed skb. |
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| 21 | * @test: The test case to which the skb belongs |
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| 22 | * @len: size to allocate |
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| 23 | * @gfp: allocation flags |
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| 24 | * |
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| 25 | * Allocate a new struct sk_buff with gfp flags, zero fill the given length |
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| 26 | * and add it as a resource to the kunit test for automatic cleanup. |
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| 27 | * |
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| 28 | * Returns: newly allocated SKB, or %NULL on error |
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| 29 | */ |
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| 30 | static inline struct sk_buff *kunit_zalloc_skb(struct kunit *test, int len, |
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| 31 | gfp_t gfp) |
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| 32 | { |
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| 33 | struct sk_buff *res = alloc_skb(size: len, priority: gfp); |
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| 34 | |
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| 35 | if (!res || skb_pad(skb: res, pad: len)) |
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| 36 | return NULL; |
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| 37 | |
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| 38 | if (kunit_add_action_or_reset(test, action: kunit_action_kfree_skb, ctx: res)) |
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| 39 | return NULL; |
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| 40 | |
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| 41 | return res; |
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| 42 | } |
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| 43 | |
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| 44 | /** |
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| 45 | * kunit_kfree_skb() - Like kfree_skb except for allocations managed by KUnit. |
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| 46 | * @test: The test case to which the resource belongs. |
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| 47 | * @skb: The SKB to free. |
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| 48 | */ |
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| 49 | static inline void kunit_kfree_skb(struct kunit *test, struct sk_buff *skb) |
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| 50 | { |
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| 51 | if (!skb) |
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| 52 | return; |
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| 53 | |
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| 54 | kunit_release_action(test, action: kunit_action_kfree_skb, ctx: (void *)skb); |
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| 55 | } |
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| 56 | |
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| 57 | #endif /* _KUNIT_SKBUFF_H */ |
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| 58 | |
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