From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wenfeng Liu Subject: [PATCH v3] net/af_packet: support Tx scattered mbuf input Date: Mon, 7 Aug 2017 09:45:38 +0000 Message-ID: <1502099138-7524-1-git-send-email-liuwf@arraynetworks.com.cn> Mime-Version: 1.0 Content-Type: text/plain Cc: To: Return-path: Received: from mail01.arraynetworks.com.cn (mail.arraynetworks.com.cn [124.42.99.121]) by dpdk.org (Postfix) with ESMTP id EA35F376C for ; Mon, 7 Aug 2017 11:45:59 +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" Signed-off-by: Wenfeng Liu --- v3: * Remove trailing whitespace v2: * Fixed coding style issues reported by checkpatch drivers/net/af_packet/rte_eth_af_packet.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/net/af_packet/rte_eth_af_packet.c b/drivers/net/af_packet/rte_eth_af_packet.c index 9a47852..7aa26e5 100644 --- a/drivers/net/af_packet/rte_eth_af_packet.c +++ b/drivers/net/af_packet/rte_eth_af_packet.c @@ -216,7 +216,7 @@ struct pmd_internals { mbuf = *bufs++; /* drop oversized packets */ - if (rte_pktmbuf_data_len(mbuf) > pkt_q->frame_data_size) { + if (mbuf->pkt_len > pkt_q->frame_data_size) { rte_pktmbuf_free(mbuf); continue; } @@ -237,8 +237,17 @@ struct pmd_internals { /* copy the tx frame data */ pbuf = (uint8_t *) ppd + TPACKET2_HDRLEN - sizeof(struct sockaddr_ll); - memcpy(pbuf, rte_pktmbuf_mtod(mbuf, void*), rte_pktmbuf_data_len(mbuf)); - ppd->tp_len = ppd->tp_snaplen = rte_pktmbuf_data_len(mbuf); + + struct rte_mbuf *tmp_mbuf = mbuf; + while (tmp_mbuf) { + uint16_t data_len = rte_pktmbuf_data_len(tmp_mbuf); + memcpy(pbuf, rte_pktmbuf_mtod(tmp_mbuf, void*), data_len); + pbuf += data_len; + tmp_mbuf = tmp_mbuf->next; + } + + ppd->tp_len = mbuf->pkt_len; + ppd->tp_snaplen = mbuf->pkt_len; /* release incoming frame and advance ring buffer */ ppd->tp_status = TP_STATUS_SEND_REQUEST; -- 1.8.3.1