From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pablo de Lara Subject: [PATCH] compressdev: clarify mbuf offsets Date: Tue, 22 May 2018 11:54:32 +0100 Message-ID: <20180522105432.36821-1-pablo.de.lara.guarch@intel.com> Cc: dev@dpdk.org, Pablo de Lara To: fiona.trahe@intel.com, ashish.gupta@caviumnetworks.com, shally.verma@cavium.com Return-path: Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by dpdk.org (Postfix) with ESMTP id 204E51DA4 for ; Tue, 22 May 2018 12:54:15 +0200 (CEST) List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Add extra clarification about offset in source and destination mbuf used in compressdev, when they are a chain of mbufs. Signed-off-by: Pablo de Lara --- lib/librte_compressdev/rte_comp.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/lib/librte_compressdev/rte_comp.h b/lib/librte_compressdev/rte_comp.h index 9826086b1..5b513c77e 100644 --- a/lib/librte_compressdev/rte_comp.h +++ b/lib/librte_compressdev/rte_comp.h @@ -315,6 +315,8 @@ struct rte_comp_op { /**< Starting point for compression or decompression, * specified as number of bytes from start of packet in * source buffer. + * This offset starts from the first segment + * of the buffer, in case the m_src is a chain of mbufs. * Starting point for checksum generation in compress direction. */ uint32_t length; @@ -328,7 +330,10 @@ struct rte_comp_op { uint32_t offset; /**< Starting point for writing output data, specified as * number of bytes from start of packet in dest - * buffer. Starting point for checksum generation in + * buffer. + * This offset starts from the first segment + * of the buffer, in case the m_dst is a chain of mbufs. + * Starting point for checksum generation in * decompress direction. */ } dst; -- 2.17.0