From patchwork Wed Dec 20 15:19:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Berg X-Patchwork-Id: 13500235 X-Patchwork-Delegate: johannes@sipsolutions.net Received: from sipsolutions.net (s3.sipsolutions.net [168.119.38.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F2BE240BE4; Wed, 20 Dec 2023 15:20:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sipsolutions.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sipsolutions.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sipsolutions.net header.i=@sipsolutions.net header.b="eMMefgr3" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sipsolutions.net; s=mail; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Content-Type:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-To: Resent-Cc:Resent-Message-ID; bh=3dQ/koIlD9pX3qWk/1PizLnWMFvyP4MgGx4SMHiaVsI=; t=1703085602; x=1704295202; b=eMMefgr38W7BSQPl4Tc+BIicEzIQZtG6kvjV9rEnUcnGMRG KPn9UcC+2SDomdWiPUfDuUXdZwGOSiOnzfuakgzsWe/zL7zS0U5tm7oUHrWLmh9feH4+4G2usEkFi FuClcClKaC+TmG0Q81sw60yZ70CqepPY5w1UaqtkLTmEO/dxt47uSO0ke4V4E3y8KJpDgAI7Kgw/Z v25x8lEP34lJGyd9FPrz0/XXwumCOr6/Ej5ORQzJ7ROdo16o1qj4iqyRKGcQ3Ydl0LMJUE8rpb4rm 8FwghZQPKUTceh9cFNGKsRLG+KYauUe6whyMRSgMzYqUdlOVJOLHPNpQZ5zHNQOw==; Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.97) (envelope-from ) id 1rFyMZ-00000001WFz-0VCN; Wed, 20 Dec 2023 16:19:59 +0100 From: benjamin@sipsolutions.net To: linux-wireless@vger.kernel.org, linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com Cc: Benjamin Berg Subject: [PATCH 2/6] kunit: add a convenience allocation wrapper for SKBs Date: Wed, 20 Dec 2023 16:19:48 +0100 Message-ID: <20231220151952.415232-3-benjamin@sipsolutions.net> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231220151952.415232-1-benjamin@sipsolutions.net> References: <20231220151952.415232-1-benjamin@sipsolutions.net> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Benjamin Berg 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 Reviewed-by: David Gow --- include/kunit/skbuff.h | 56 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 include/kunit/skbuff.h diff --git a/include/kunit/skbuff.h b/include/kunit/skbuff.h new file mode 100644 index 000000000000..2144d01e556f --- /dev/null +++ b/include/kunit/skbuff.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Base unit test (KUnit) API. + * + * Copyright (C) 2023 Intel Corporation + */ + +#ifndef _KUNIT_SKBUFF_H +#define _KUNIT_SKBUFF_H + +#include +#include + +static void kunit_action_kfree_skb(void *p) +{ + kfree_skb((struct sk_buff *)p); +} + +/** + * kunit_zalloc_skb() - Allocate and initialize a resource managed skb. + * @test: The test case to which the skb belongs + * @len: size to allocate + * + * Allocate a new struct sk_buff with GFP_KERNEL, zero fill the give length + * and add it as a resource to the kunit test for automatic cleanup. + * + * Returns: newly allocated SKB, or %NULL on error + */ +static inline struct sk_buff *kunit_zalloc_skb(struct kunit *test, int len, + gfp_t gfp) +{ + struct sk_buff *res = alloc_skb(len, GFP_KERNEL); + + if (!res || skb_pad(res, len)) + return NULL; + + if (kunit_add_action_or_reset(test, kunit_action_kfree_skb, res)) + return NULL; + + return res; +} + +/** + * kunit_kfree_skb() - Like kfree_skb except for allocations managed by KUnit. + * @test: The test case to which the resource belongs. + * @skb: The SKB to free. + */ +static inline void kunit_kfree_skb(struct kunit *test, struct sk_buff *skb) +{ + if (!skb) + return; + + kunit_release_action(test, kunit_action_kfree_skb, (void *)skb); +} + +#endif /* _KUNIT_SKBUFF_H */