2695c6df69
- All devices register themselfs by calling a kind of DRIVER_REGISTER_XXX. The PMD_REGISTER_DRIVER is not used anymore. - PMD_VDEV type is also not being used - can be removed from all VDEVs. Signed-off-by: Jan Viktorin <viktorin@rehivetech.com> Signed-off-by: Shreyansh Jain <shreyansh.jain@nxp.com> Acked-by: David Marchand <david.marchand@6wind.com>
770 lines
20 KiB
C
770 lines
20 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdint.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <sys/user.h>
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#ifndef PAGE_SIZE
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#define PAGE_SIZE sysconf(_SC_PAGE_SIZE)
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#endif
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#include <linux/binfmts.h>
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#include <xen/xen-compat.h>
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#if __XEN_LATEST_INTERFACE_VERSION__ < 0x00040200
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#include <xs.h>
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#else
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#include <xenstore.h>
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#endif
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#include <linux/virtio_ring.h>
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#include <rte_mbuf.h>
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#include <rte_ethdev.h>
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#include <rte_malloc.h>
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#include <rte_memcpy.h>
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#include <rte_string_fns.h>
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#include <rte_vdev.h>
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#include <cmdline_parse.h>
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#include <cmdline_parse_etheraddr.h>
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#include "rte_xen_lib.h"
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#include "virtqueue.h"
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#include "rte_eth_xenvirt.h"
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#define VQ_DESC_NUM 256
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#define VIRTIO_MBUF_BURST_SZ 64
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/* virtio_idx is increased after new device is created.*/
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static int virtio_idx = 0;
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static const char *drivername = "xen virtio PMD";
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static struct rte_eth_link pmd_link = {
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.link_speed = ETH_SPEED_NUM_10G,
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.link_duplex = ETH_LINK_FULL_DUPLEX,
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.link_status = ETH_LINK_DOWN,
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.link_autoneg = ETH_LINK_SPEED_FIXED
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};
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static void
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eth_xenvirt_free_queues(struct rte_eth_dev *dev);
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static uint16_t
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eth_xenvirt_rx(void *q, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
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{
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struct virtqueue *rxvq = q;
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struct rte_mbuf *rxm, *new_mbuf;
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uint16_t nb_used, num;
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uint32_t len[VIRTIO_MBUF_BURST_SZ];
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uint32_t i;
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struct pmd_internals *pi = rxvq->internals;
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nb_used = VIRTQUEUE_NUSED(rxvq);
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rte_smp_rmb();
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num = (uint16_t)(likely(nb_used <= nb_pkts) ? nb_used : nb_pkts);
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num = (uint16_t)(likely(num <= VIRTIO_MBUF_BURST_SZ) ? num : VIRTIO_MBUF_BURST_SZ);
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if (unlikely(num == 0)) return 0;
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num = virtqueue_dequeue_burst(rxvq, rx_pkts, len, num);
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PMD_RX_LOG(DEBUG, "used:%d dequeue:%d\n", nb_used, num);
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for (i = 0; i < num ; i ++) {
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rxm = rx_pkts[i];
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PMD_RX_LOG(DEBUG, "packet len:%d\n", len[i]);
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rxm->next = NULL;
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rxm->data_off = RTE_PKTMBUF_HEADROOM;
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rxm->data_len = (uint16_t)(len[i] - sizeof(struct virtio_net_hdr));
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rxm->nb_segs = 1;
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rxm->port = pi->port_id;
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rxm->pkt_len = (uint32_t)(len[i] - sizeof(struct virtio_net_hdr));
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}
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/* allocate new mbuf for the used descriptor */
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while (likely(!virtqueue_full(rxvq))) {
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new_mbuf = rte_mbuf_raw_alloc(rxvq->mpool);
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if (unlikely(new_mbuf == NULL)) {
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break;
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}
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if (unlikely(virtqueue_enqueue_recv_refill(rxvq, new_mbuf))) {
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rte_pktmbuf_free_seg(new_mbuf);
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break;
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}
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}
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pi->eth_stats.ipackets += num;
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return num;
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}
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static uint16_t
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eth_xenvirt_tx(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
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{
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struct virtqueue *txvq = tx_queue;
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struct rte_mbuf *txm;
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uint16_t nb_used, nb_tx, num, i;
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int error;
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uint32_t len[VIRTIO_MBUF_BURST_SZ];
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struct rte_mbuf *snd_pkts[VIRTIO_MBUF_BURST_SZ];
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struct pmd_internals *pi = txvq->internals;
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nb_tx = 0;
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if (unlikely(nb_pkts == 0))
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return 0;
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PMD_TX_LOG(DEBUG, "%d packets to xmit", nb_pkts);
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nb_used = VIRTQUEUE_NUSED(txvq);
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rte_smp_rmb();
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num = (uint16_t)(likely(nb_used <= VIRTIO_MBUF_BURST_SZ) ? nb_used : VIRTIO_MBUF_BURST_SZ);
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num = virtqueue_dequeue_burst(txvq, snd_pkts, len, num);
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for (i = 0; i < num ; i ++) {
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/* mergable not supported, one segment only */
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rte_pktmbuf_free_seg(snd_pkts[i]);
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}
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while (nb_tx < nb_pkts) {
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if (likely(!virtqueue_full(txvq))) {
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/* TODO drop tx_pkts if it contains multiple segments */
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txm = tx_pkts[nb_tx];
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error = virtqueue_enqueue_xmit(txvq, txm);
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if (unlikely(error)) {
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if (error == ENOSPC)
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PMD_TX_LOG(ERR, "virtqueue_enqueue Free count = 0\n");
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else if (error == EMSGSIZE)
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PMD_TX_LOG(ERR, "virtqueue_enqueue Free count < 1\n");
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else
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PMD_TX_LOG(ERR, "virtqueue_enqueue error: %d\n", error);
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break;
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}
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nb_tx++;
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} else {
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PMD_TX_LOG(ERR, "No free tx descriptors to transmit\n");
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/* virtqueue_notify not needed in our para-virt solution */
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break;
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}
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}
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pi->eth_stats.opackets += nb_tx;
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return nb_tx;
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}
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static int
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eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
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{
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RTE_LOG(ERR, PMD, "%s\n", __func__);
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return 0;
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}
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/*
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* Create a shared page between guest and host.
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* Host monitors this page if it is cleared on unmap, and then
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* do necessary clean up.
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*/
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static void
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gntalloc_vring_flag(int vtidx)
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{
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char key_str[PATH_MAX];
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char val_str[PATH_MAX];
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uint32_t gref_tmp;
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void *ptr;
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if (grefwatch_from_alloc(&gref_tmp, &ptr)) {
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RTE_LOG(ERR, PMD, "grefwatch_from_alloc error\n");
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exit(0);
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}
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*(uint8_t *)ptr = MAP_FLAG;
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snprintf(val_str, sizeof(val_str), "%u", gref_tmp);
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snprintf(key_str, sizeof(key_str),
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DPDK_XENSTORE_PATH"%d"VRING_FLAG_STR, vtidx);
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xenstore_write(key_str, val_str);
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}
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/*
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* Notify host this virtio device is started.
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* Host could start polling this device.
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*/
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static void
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dev_start_notify(int vtidx)
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{
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char key_str[PATH_MAX];
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char val_str[PATH_MAX];
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RTE_LOG(INFO, PMD, "%s: virtio %d is started\n", __func__, vtidx);
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gntalloc_vring_flag(vtidx);
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snprintf(key_str, sizeof(key_str), "%s%s%d",
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DPDK_XENSTORE_PATH, EVENT_TYPE_START_STR,
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vtidx);
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snprintf(val_str, sizeof(val_str), "1");
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xenstore_write(key_str, val_str);
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}
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/*
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* Notify host this virtio device is stopped.
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* Host could stop polling this device.
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*/
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static void
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dev_stop_notify(int vtidx)
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{
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RTE_SET_USED(vtidx);
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}
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static int
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update_mac_address(struct ether_addr *mac_addrs, int vtidx)
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{
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char key_str[PATH_MAX];
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char val_str[PATH_MAX];
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int rv;
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if (mac_addrs == NULL) {
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RTE_LOG(ERR, PMD, "%s: NULL pointer mac specified\n", __func__);
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return -1;
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}
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rv = snprintf(key_str, sizeof(key_str),
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DPDK_XENSTORE_PATH"%d_ether_addr", vtidx);
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if (rv == -1)
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return rv;
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rv = snprintf(val_str, sizeof(val_str), "%02x:%02x:%02x:%02x:%02x:%02x",
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mac_addrs->addr_bytes[0],
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mac_addrs->addr_bytes[1],
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mac_addrs->addr_bytes[2],
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mac_addrs->addr_bytes[3],
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mac_addrs->addr_bytes[4],
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mac_addrs->addr_bytes[5]);
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if (rv == -1)
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return rv;
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if (xenstore_write(key_str, val_str))
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return rv;
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return 0;
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}
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static int
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eth_dev_start(struct rte_eth_dev *dev)
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{
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struct virtqueue *rxvq = dev->data->rx_queues[0];
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struct virtqueue *txvq = dev->data->tx_queues[0];
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struct rte_mbuf *m;
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struct pmd_internals *pi = (struct pmd_internals *)dev->data->dev_private;
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int rv;
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dev->data->dev_link.link_status = ETH_LINK_UP;
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while (!virtqueue_full(rxvq)) {
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m = rte_mbuf_raw_alloc(rxvq->mpool);
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if (m == NULL)
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break;
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/* Enqueue allocated buffers. */
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if (virtqueue_enqueue_recv_refill(rxvq, m)) {
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rte_pktmbuf_free_seg(m);
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break;
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}
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}
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rxvq->internals = pi;
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txvq->internals = pi;
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rv = update_mac_address(dev->data->mac_addrs, pi->virtio_idx);
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if (rv)
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return -1;
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dev_start_notify(pi->virtio_idx);
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return 0;
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}
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static void
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eth_dev_stop(struct rte_eth_dev *dev)
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{
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struct pmd_internals *pi = (struct pmd_internals *)dev->data->dev_private;
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dev->data->dev_link.link_status = ETH_LINK_DOWN;
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dev_stop_notify(pi->virtio_idx);
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}
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/*
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* Notify host this virtio device is closed.
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* Host could do necessary clean up to this device.
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*/
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static void
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eth_dev_close(struct rte_eth_dev *dev)
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{
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eth_xenvirt_free_queues(dev);
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}
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static void
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eth_dev_info(struct rte_eth_dev *dev,
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struct rte_eth_dev_info *dev_info)
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{
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struct pmd_internals *internals = dev->data->dev_private;
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RTE_SET_USED(internals);
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dev_info->driver_name = drivername;
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dev_info->max_mac_addrs = 1;
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dev_info->max_rx_pktlen = (uint32_t)2048;
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dev_info->max_rx_queues = (uint16_t)1;
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dev_info->max_tx_queues = (uint16_t)1;
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dev_info->min_rx_bufsize = 0;
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dev_info->pci_dev = NULL;
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}
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static void
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eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
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{
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struct pmd_internals *internals = dev->data->dev_private;
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if(stats)
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rte_memcpy(stats, &internals->eth_stats, sizeof(*stats));
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}
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static void
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eth_stats_reset(struct rte_eth_dev *dev)
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{
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struct pmd_internals *internals = dev->data->dev_private;
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/* Reset software totals */
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memset(&internals->eth_stats, 0, sizeof(internals->eth_stats));
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}
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static void
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eth_queue_release(void *q)
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{
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rte_free(q);
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}
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static int
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eth_link_update(struct rte_eth_dev *dev __rte_unused,
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int wait_to_complete __rte_unused)
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{
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return 0;
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}
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/*
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* Create shared vring between guest and host.
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* Memory is allocated through grant alloc driver, so it is not physical continuous.
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*/
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static void *
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gntalloc_vring_create(int queue_type, uint32_t size, int vtidx)
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{
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char key_str[PATH_MAX] = {0};
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char val_str[PATH_MAX] = {0};
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void *va = NULL;
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int pg_size;
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uint32_t pg_num;
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uint32_t *gref_arr = NULL;
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phys_addr_t *pa_arr = NULL;
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uint64_t start_index;
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int rv;
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pg_size = getpagesize();
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size = RTE_ALIGN_CEIL(size, pg_size);
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pg_num = size / pg_size;
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gref_arr = calloc(pg_num, sizeof(gref_arr[0]));
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pa_arr = calloc(pg_num, sizeof(pa_arr[0]));
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if (gref_arr == NULL || pa_arr == NULL) {
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RTE_LOG(ERR, PMD, "%s: calloc failed\n", __func__);
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goto out;
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}
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va = gntalloc(size, gref_arr, &start_index);
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if (va == NULL) {
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RTE_LOG(ERR, PMD, "%s: gntalloc failed\n", __func__);
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goto out;
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}
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if (get_phys_map(va, pa_arr, pg_num, pg_size))
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goto out;
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/* write in xenstore gref and pfn for each page of vring */
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if (grant_node_create(pg_num, gref_arr, pa_arr, val_str, sizeof(val_str))) {
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gntfree(va, size, start_index);
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va = NULL;
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goto out;
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}
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if (queue_type == VTNET_RQ)
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rv = snprintf(key_str, sizeof(key_str), DPDK_XENSTORE_PATH"%d"RXVRING_XENSTORE_STR, vtidx);
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else
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rv = snprintf(key_str, sizeof(key_str), DPDK_XENSTORE_PATH"%d"TXVRING_XENSTORE_STR, vtidx);
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if (rv == -1 || xenstore_write(key_str, val_str) == -1) {
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gntfree(va, size, start_index);
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va = NULL;
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}
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out:
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free(pa_arr);
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free(gref_arr);
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return va;
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}
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static struct virtqueue *
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virtio_queue_setup(struct rte_eth_dev *dev, int queue_type)
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{
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struct virtqueue *vq = NULL;
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uint16_t vq_size = VQ_DESC_NUM;
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int i = 0;
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char vq_name[VIRTQUEUE_MAX_NAME_SZ];
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size_t size;
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struct vring *vr;
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/* Allocate memory for virtqueue. */
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if (queue_type == VTNET_RQ) {
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snprintf(vq_name, sizeof(vq_name), "port%d_rvq",
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dev->data->port_id);
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vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
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vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
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if (vq == NULL) {
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RTE_LOG(ERR, PMD, "%s: unabled to allocate virtqueue\n", __func__);
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return NULL;
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}
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memcpy(vq->vq_name, vq_name, sizeof(vq->vq_name));
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} else if(queue_type == VTNET_TQ) {
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snprintf(vq_name, sizeof(vq_name), "port%d_tvq",
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dev->data->port_id);
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vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
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vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
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if (vq == NULL) {
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RTE_LOG(ERR, PMD, "%s: unabled to allocate virtqueue\n", __func__);
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return NULL;
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}
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memcpy(vq->vq_name, vq_name, sizeof(vq->vq_name));
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}
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memcpy(vq->vq_name, vq_name, sizeof(vq->vq_name));
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vq->vq_alignment = VIRTIO_PCI_VRING_ALIGN;
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vq->vq_nentries = vq_size;
|
|
vq->vq_free_cnt = vq_size;
|
|
/* Calcuate vring size according to virtio spec */
|
|
size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
|
|
vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
|
|
/* Allocate memory for virtio vring through gntalloc driver*/
|
|
vq->vq_ring_virt_mem = gntalloc_vring_create(queue_type, vq->vq_ring_size,
|
|
((struct pmd_internals *)dev->data->dev_private)->virtio_idx);
|
|
memset(vq->vq_ring_virt_mem, 0, vq->vq_ring_size);
|
|
vr = &vq->vq_ring;
|
|
vring_init(vr, vq_size, vq->vq_ring_virt_mem, vq->vq_alignment);
|
|
/*
|
|
* Locally maintained last consumed index, this idex trails
|
|
* vq_ring.used->idx.
|
|
*/
|
|
vq->vq_used_cons_idx = 0;
|
|
vq->vq_desc_head_idx = 0;
|
|
vq->vq_free_cnt = vq->vq_nentries;
|
|
memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
|
|
|
|
/* Chain all the descriptors in the ring with an END */
|
|
for (i = 0; i < vq_size - 1; i++)
|
|
vr->desc[i].next = (uint16_t)(i + 1);
|
|
vr->desc[i].next = VQ_RING_DESC_CHAIN_END;
|
|
|
|
return vq;
|
|
}
|
|
|
|
static int
|
|
eth_rx_queue_setup(struct rte_eth_dev *dev,uint16_t rx_queue_id,
|
|
uint16_t nb_rx_desc __rte_unused,
|
|
unsigned int socket_id __rte_unused,
|
|
const struct rte_eth_rxconf *rx_conf __rte_unused,
|
|
struct rte_mempool *mb_pool)
|
|
{
|
|
struct virtqueue *vq;
|
|
vq = dev->data->rx_queues[rx_queue_id] = virtio_queue_setup(dev, VTNET_RQ);
|
|
vq->mpool = mb_pool;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
eth_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
|
|
uint16_t nb_tx_desc __rte_unused,
|
|
unsigned int socket_id __rte_unused,
|
|
const struct rte_eth_txconf *tx_conf __rte_unused)
|
|
{
|
|
dev->data->tx_queues[tx_queue_id] = virtio_queue_setup(dev, VTNET_TQ);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
eth_xenvirt_free_queues(struct rte_eth_dev *dev)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < dev->data->nb_rx_queues; i++) {
|
|
eth_queue_release(dev->data->rx_queues[i]);
|
|
dev->data->rx_queues[i] = NULL;
|
|
}
|
|
dev->data->nb_rx_queues = 0;
|
|
|
|
for (i = 0; i < dev->data->nb_tx_queues; i++) {
|
|
eth_queue_release(dev->data->tx_queues[i]);
|
|
dev->data->tx_queues[i] = NULL;
|
|
}
|
|
dev->data->nb_tx_queues = 0;
|
|
}
|
|
|
|
static const struct eth_dev_ops ops = {
|
|
.dev_start = eth_dev_start,
|
|
.dev_stop = eth_dev_stop,
|
|
.dev_close = eth_dev_close,
|
|
.dev_configure = eth_dev_configure,
|
|
.dev_infos_get = eth_dev_info,
|
|
.rx_queue_setup = eth_rx_queue_setup,
|
|
.tx_queue_setup = eth_tx_queue_setup,
|
|
.rx_queue_release = eth_queue_release,
|
|
.tx_queue_release = eth_queue_release,
|
|
.link_update = eth_link_update,
|
|
.stats_get = eth_stats_get,
|
|
.stats_reset = eth_stats_reset,
|
|
};
|
|
|
|
|
|
static int
|
|
rte_eth_xenvirt_parse_args(struct xenvirt_dict *dict,
|
|
const char *name, const char *params)
|
|
{
|
|
int i;
|
|
char *pairs[RTE_ETH_XENVIRT_MAX_ARGS];
|
|
int num_of_pairs;
|
|
char *pair[2];
|
|
char *args;
|
|
int ret = -1;
|
|
|
|
if (params == NULL)
|
|
return 0;
|
|
|
|
args = rte_zmalloc(NULL, strlen(params) + 1, RTE_CACHE_LINE_SIZE);
|
|
if (args == NULL) {
|
|
RTE_LOG(ERR, PMD, "Couldn't parse %s device \n", name);
|
|
return -1;
|
|
}
|
|
rte_memcpy(args, params, strlen(params));
|
|
|
|
num_of_pairs = rte_strsplit(args, strnlen(args, MAX_ARG_STRLEN),
|
|
pairs,
|
|
RTE_ETH_XENVIRT_MAX_ARGS ,
|
|
RTE_ETH_XENVIRT_PAIRS_DELIM);
|
|
|
|
for (i = 0; i < num_of_pairs; i++) {
|
|
pair[0] = NULL;
|
|
pair[1] = NULL;
|
|
rte_strsplit(pairs[i], strnlen(pairs[i], MAX_ARG_STRLEN),
|
|
pair, 2,
|
|
RTE_ETH_XENVIRT_KEY_VALUE_DELIM);
|
|
|
|
if (pair[0] == NULL || pair[1] == NULL || pair[0][0] == 0
|
|
|| pair[1][0] == 0) {
|
|
RTE_LOG(ERR, PMD,
|
|
"Couldn't parse %s device,"
|
|
"wrong key or value \n", name);
|
|
goto err;
|
|
}
|
|
|
|
if (!strncmp(pair[0], RTE_ETH_XENVIRT_MAC_PARAM,
|
|
sizeof(RTE_ETH_XENVIRT_MAC_PARAM))) {
|
|
if (cmdline_parse_etheraddr(NULL,
|
|
pair[1],
|
|
&dict->addr,
|
|
sizeof(dict->addr)) < 0) {
|
|
RTE_LOG(ERR, PMD,
|
|
"Invalid %s device ether address\n",
|
|
name);
|
|
goto err;
|
|
}
|
|
|
|
dict->addr_valid = 1;
|
|
}
|
|
}
|
|
|
|
ret = 0;
|
|
err:
|
|
rte_free(args);
|
|
return ret;
|
|
}
|
|
|
|
enum dev_action {
|
|
DEV_CREATE,
|
|
DEV_ATTACH
|
|
};
|
|
|
|
|
|
static int
|
|
eth_dev_xenvirt_create(const char *name, const char *params,
|
|
const unsigned numa_node,
|
|
enum dev_action action)
|
|
{
|
|
struct rte_eth_dev_data *data = NULL;
|
|
struct pmd_internals *internals = NULL;
|
|
struct rte_eth_dev *eth_dev = NULL;
|
|
struct xenvirt_dict dict;
|
|
|
|
memset(&dict, 0, sizeof(struct xenvirt_dict));
|
|
|
|
RTE_LOG(INFO, PMD, "Creating virtio rings backed ethdev on numa socket %u\n",
|
|
numa_node);
|
|
RTE_SET_USED(action);
|
|
|
|
if (rte_eth_xenvirt_parse_args(&dict, name, params) < 0) {
|
|
RTE_LOG(ERR, PMD, "%s: Failed to parse ethdev parameters\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
/* now do all data allocation - for eth_dev structure, dummy pci driver
|
|
* and internal (private) data
|
|
*/
|
|
data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
|
|
if (data == NULL)
|
|
goto err;
|
|
|
|
internals = rte_zmalloc_socket(name, sizeof(*internals), 0, numa_node);
|
|
if (internals == NULL)
|
|
goto err;
|
|
|
|
/* reserve an ethdev entry */
|
|
eth_dev = rte_eth_dev_allocate(name);
|
|
if (eth_dev == NULL)
|
|
goto err;
|
|
|
|
data->dev_private = internals;
|
|
data->port_id = eth_dev->data->port_id;
|
|
data->nb_rx_queues = (uint16_t)1;
|
|
data->nb_tx_queues = (uint16_t)1;
|
|
data->dev_link = pmd_link;
|
|
data->mac_addrs = rte_zmalloc("xen_virtio", ETHER_ADDR_LEN, 0);
|
|
|
|
if(dict.addr_valid)
|
|
memcpy(&data->mac_addrs->addr_bytes, &dict.addr, sizeof(struct ether_addr));
|
|
else
|
|
eth_random_addr(&data->mac_addrs->addr_bytes[0]);
|
|
|
|
eth_dev->data = data;
|
|
eth_dev->dev_ops = &ops;
|
|
|
|
eth_dev->data->dev_flags = RTE_PCI_DRV_DETACHABLE;
|
|
eth_dev->data->kdrv = RTE_KDRV_NONE;
|
|
eth_dev->data->drv_name = drivername;
|
|
eth_dev->driver = NULL;
|
|
eth_dev->data->numa_node = numa_node;
|
|
|
|
eth_dev->rx_pkt_burst = eth_xenvirt_rx;
|
|
eth_dev->tx_pkt_burst = eth_xenvirt_tx;
|
|
|
|
internals->virtio_idx = virtio_idx++;
|
|
internals->port_id = eth_dev->data->port_id;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
rte_free(data);
|
|
rte_free(internals);
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
static int
|
|
eth_dev_xenvirt_free(const char *name, const unsigned numa_node)
|
|
{
|
|
struct rte_eth_dev *eth_dev = NULL;
|
|
|
|
RTE_LOG(DEBUG, PMD,
|
|
"Free virtio rings backed ethdev on numa socket %u\n",
|
|
numa_node);
|
|
|
|
/* find an ethdev entry */
|
|
eth_dev = rte_eth_dev_allocated(name);
|
|
if (eth_dev == NULL)
|
|
return -1;
|
|
|
|
if (eth_dev->data->dev_started == 1) {
|
|
eth_dev_stop(eth_dev);
|
|
eth_dev_close(eth_dev);
|
|
}
|
|
|
|
eth_dev->rx_pkt_burst = NULL;
|
|
eth_dev->tx_pkt_burst = NULL;
|
|
eth_dev->dev_ops = NULL;
|
|
|
|
rte_free(eth_dev->data);
|
|
rte_free(eth_dev->data->dev_private);
|
|
rte_free(eth_dev->data->mac_addrs);
|
|
|
|
virtio_idx--;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*TODO: Support multiple process model */
|
|
static int
|
|
rte_pmd_xenvirt_devinit(const char *name, const char *params)
|
|
{
|
|
if (virtio_idx == 0) {
|
|
if (xenstore_init() != 0) {
|
|
RTE_LOG(ERR, PMD, "%s: xenstore init failed\n", __func__);
|
|
return -1;
|
|
}
|
|
if (gntalloc_open() != 0) {
|
|
RTE_LOG(ERR, PMD, "%s: grant init failed\n", __func__);
|
|
return -1;
|
|
}
|
|
}
|
|
eth_dev_xenvirt_create(name, params, rte_socket_id(), DEV_CREATE);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rte_pmd_xenvirt_devuninit(const char *name)
|
|
{
|
|
eth_dev_xenvirt_free(name, rte_socket_id());
|
|
|
|
if (virtio_idx == 0) {
|
|
if (xenstore_uninit() != 0)
|
|
RTE_LOG(ERR, PMD, "%s: xenstore uninit failed\n", __func__);
|
|
|
|
gntalloc_close();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct rte_vdev_driver pmd_xenvirt_drv = {
|
|
.init = rte_pmd_xenvirt_devinit,
|
|
.uninit = rte_pmd_xenvirt_devuninit,
|
|
};
|
|
|
|
DRIVER_REGISTER_VDEV(net_xenvirt, pmd_xenvirt_drv);
|
|
DRIVER_REGISTER_PARAM_STRING(net_xenvirt,
|
|
"mac=<mac addr>");
|