From patchwork Fri Aug 9 08:23:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Hopps X-Patchwork-Id: 13758533 X-Patchwork-Delegate: kuba@kernel.org Received: from smtp.chopps.org (smtp.chopps.org [54.88.81.56]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 3B37418C326 for ; Fri, 9 Aug 2024 08:24:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.88.81.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723191890; cv=none; b=hKbkWJoiLavO0S4RSA7ptXo3/GT9xKXCP5IqAsF3yDsHsr0EG88u6xUfvnajmElF+AEB49/KP+3FjCrhsMlpeKyzsKN/ZZqmIAqdWR8k/hLJ+QVamI1WeHnxuiTMuMuTHuu7h+RiRj3Gq8j8yw9I4B0t00L2m+DFuMseyN7D7dk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723191890; c=relaxed/simple; bh=cbgTpwOS/qRfqB5SjxeDdukIKfKA58ahGwKHhqhrTEU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Uz4D5eZbn5i3sTWFlx6PE+IPNkxVNaadf8ef5OuE6Q7WMq03r/Q0f3Sf3gpkMqCqEXLUkdhWLzc+DnTRM7fUOa8fEODa3ogMyZUWYHfGgGGT+g+6tQzrPJn8g3XGsygN3u8xedXgUePZzIfLQp4YzRyQw6yaOiflfJUbwioQGkk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=chopps.org; spf=fail smtp.mailfrom=chopps.org; arc=none smtp.client-ip=54.88.81.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=chopps.org Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=chopps.org Received: from labnh.int.chopps.org (syn-172-222-091-149.res.spectrum.com [172.222.91.149]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (Client did not present a certificate) by smtp.chopps.org (Postfix) with ESMTPSA id 507AB7D120; Fri, 9 Aug 2024 08:24:47 +0000 (UTC) From: Christian Hopps To: devel@linux-ipsec.org Cc: Steffen Klassert , netdev@vger.kernel.org, Christian Hopps , Christian Hopps Subject: [PATCH ipsec-next v1 1/2] net: refactor common skb header copy code for re-use Date: Fri, 9 Aug 2024 04:23:13 -0400 Message-ID: <20240809082314.2810408-2-chopps@chopps.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240809082314.2810408-1-chopps@chopps.org> References: <20240809082314.2810408-1-chopps@chopps.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Christian Hopps Factor out some common skb header copying code so that it can be re-used outside of skbuff. Signed-off-by: Christian Hopps --- include/linux/skbuff.h | 1 + net/core/skbuff.c | 8 +++++++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 29c3ea5b6e93..8626f9a343db 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1374,6 +1374,7 @@ struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src); void skb_headers_offset_update(struct sk_buff *skb, int off); int skb_copy_ubufs(struct sk_buff *skb, gfp_t gfp_mask); struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t priority); +void ___copy_skb_header(struct sk_buff *new, const struct sk_buff *old); void skb_copy_header(struct sk_buff *new, const struct sk_buff *old); struct sk_buff *skb_copy(const struct sk_buff *skb, gfp_t priority); struct sk_buff *__pskb_copy_fclone(struct sk_buff *skb, int headroom, diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 83f8cd8aa2d1..da5a47d2c9ab 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -1515,7 +1515,7 @@ EXPORT_SYMBOL(napi_consume_skb); BUILD_BUG_ON(offsetof(struct sk_buff, field) != \ offsetof(struct sk_buff, headers.field)); \ -static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old) +void ___copy_skb_header(struct sk_buff *new, const struct sk_buff *old) { new->tstamp = old->tstamp; /* We do not copy old->sk */ @@ -1524,6 +1524,12 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old) skb_dst_copy(new, old); __skb_ext_copy(new, old); __nf_copy(new, old, false); +} +EXPORT_SYMBOL_GPL(___copy_skb_header); + +static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old) +{ + ___copy_skb_header(new, old); /* Note : this field could be in the headers group. * It is not yet because we do not want to have a 16 bit hole