Beispiel #1
0
/**
 * Parse device parameters.
 *
 * @param devargs
 *   Device arguments structure.
 *
 * @return
 *   0 on success, negative errno value otherwise and rte_errno is set.
 */
static int
mlx4_args(struct rte_devargs *devargs, struct mlx4_conf *conf)
{
	struct rte_kvargs *kvlist;
	unsigned int arg_count;
	int ret = 0;
	int i;

	if (devargs == NULL)
		return 0;
	kvlist = rte_kvargs_parse(devargs->args, pmd_mlx4_init_params);
	if (kvlist == NULL) {
		rte_errno = EINVAL;
		ERROR("failed to parse kvargs");
		return -rte_errno;
	}
	/* Process parameters. */
	for (i = 0; pmd_mlx4_init_params[i]; ++i) {
		arg_count = rte_kvargs_count(kvlist, MLX4_PMD_PORT_KVARG);
		while (arg_count-- > 0) {
			ret = rte_kvargs_process(kvlist,
						 MLX4_PMD_PORT_KVARG,
						 (int (*)(const char *,
							  const char *,
							  void *))
						 mlx4_arg_parse,
						 conf);
			if (ret != 0)
				goto free_kvlist;
		}
	}
free_kvlist:
	rte_kvargs_free(kvlist);
	return ret;
}
Beispiel #2
0
/*
 * Parse the arguments "key=value;key=value;..." string and return
 * an allocated structure that contains a key/value list. Also
 * check if only valid keys were used.
 */
struct rte_kvargs *
rte_kvargs_parse(const char *args, const char *valid_keys[])
{
	struct rte_kvargs *kvlist;

	kvlist = malloc(sizeof(*kvlist));
	if (kvlist == NULL)
		return NULL;
	memset(kvlist, 0, sizeof(*kvlist));

	if (rte_kvargs_tokenize(kvlist, args) < 0) {
		rte_kvargs_free(kvlist);
		return NULL;
	}

	if (valid_keys != NULL && check_for_valid_keys(kvlist, valid_keys) < 0) {
		rte_kvargs_free(kvlist);
		return NULL;
	}

	return kvlist;
}
/* test several error cases */
static int test_invalid_kvargs(void)
{
	struct rte_kvargs *kvlist;
	/* list of argument that should fail */
	const char *args_list[] = {
		"wrong-key=x",     /* key not in valid_keys_list */
		"foo=1,foo=",      /* empty value */
		"foo=1,,foo=2",    /* empty key/value */
		"foo=1,foo",       /* no value */
		"foo=1,=2",        /* no key */
		",=",              /* also test with a smiley */
		NULL };
	const char **args;
	const char *valid_keys_list[] = { "foo", "check", NULL };
	const char **valid_keys = valid_keys_list;

	for (args = args_list; *args != NULL; args++) {

		kvlist = rte_kvargs_parse(*args, valid_keys);
		if (kvlist != NULL) {
			printf("rte_kvargs_parse() returned 0 (but should not)\n");
			rte_kvargs_free(kvlist);
			goto fail;
		}
		return 0;
	}

 fail:
	printf("while processing <%s>", *args);
	if (valid_keys != NULL && *valid_keys != NULL) {
		printf(" using valid_keys=<%s", *valid_keys);
		while (*(++valid_keys) != NULL)
			printf(",%s", *valid_keys);
		printf(">");
	}
	printf("\n");
	return -1;
}
Beispiel #4
0
static void enicpmd_dev_info_get(struct rte_eth_dev *eth_dev,
	struct rte_eth_dev_info *device_info)
{
	struct enic *enic = pmd_priv(eth_dev);

	ENICPMD_FUNC_TRACE();
	/* Scattered Rx uses two receive queues per rx queue exposed to dpdk */
	device_info->max_rx_queues = enic->conf_rq_count / 2;
	device_info->max_tx_queues = enic->conf_wq_count;
	device_info->min_rx_bufsize = ENIC_MIN_MTU;
	/* "Max" mtu is not a typo. HW receives packet sizes up to the
	 * max mtu regardless of the current mtu (vNIC's mtu). vNIC mtu is
	 * a hint to the driver to size receive buffers accordingly so that
	 * larger-than-vnic-mtu packets get truncated.. For DPDK, we let
	 * the user decide the buffer size via rxmode.max_rx_pkt_len, basically
	 * ignoring vNIC mtu.
	 */
	device_info->max_rx_pktlen = enic_mtu_to_max_rx_pktlen(enic->max_mtu);
	device_info->max_mac_addrs = ENIC_UNICAST_PERFECT_FILTERS;
	device_info->rx_offload_capa = enic->rx_offload_capa;
	device_info->tx_offload_capa = enic->tx_offload_capa;
	device_info->tx_queue_offload_capa = enic->tx_queue_offload_capa;
	device_info->default_rxconf = (struct rte_eth_rxconf) {
		.rx_free_thresh = ENIC_DEFAULT_RX_FREE_THRESH
	};
	device_info->reta_size = enic->reta_size;
	device_info->hash_key_size = enic->hash_key_size;
	device_info->flow_type_rss_offloads = enic->flow_type_rss_offloads;
	device_info->rx_desc_lim = (struct rte_eth_desc_lim) {
		.nb_max = enic->config.rq_desc_count,
		.nb_min = ENIC_MIN_RQ_DESCS,
		.nb_align = ENIC_ALIGN_DESCS,
	};
	device_info->tx_desc_lim = (struct rte_eth_desc_lim) {
		.nb_max = enic->config.wq_desc_count,
		.nb_min = ENIC_MIN_WQ_DESCS,
		.nb_align = ENIC_ALIGN_DESCS,
		.nb_seg_max = ENIC_TX_XMIT_MAX,
		.nb_mtu_seg_max = ENIC_NON_TSO_MAX_DESC,
	};
	device_info->default_rxportconf = (struct rte_eth_dev_portconf) {
		.burst_size = ENIC_DEFAULT_RX_BURST,
		.ring_size = RTE_MIN(device_info->rx_desc_lim.nb_max,
			ENIC_DEFAULT_RX_RING_SIZE),
		.nb_queues = ENIC_DEFAULT_RX_RINGS,
	};
	device_info->default_txportconf = (struct rte_eth_dev_portconf) {
		.burst_size = ENIC_DEFAULT_TX_BURST,
		.ring_size = RTE_MIN(device_info->tx_desc_lim.nb_max,
			ENIC_DEFAULT_TX_RING_SIZE),
		.nb_queues = ENIC_DEFAULT_TX_RINGS,
	};
}

static const uint32_t *enicpmd_dev_supported_ptypes_get(struct rte_eth_dev *dev)
{
	static const uint32_t ptypes[] = {
		RTE_PTYPE_L2_ETHER,
		RTE_PTYPE_L2_ETHER_VLAN,
		RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
		RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
		RTE_PTYPE_L4_TCP,
		RTE_PTYPE_L4_UDP,
		RTE_PTYPE_L4_FRAG,
		RTE_PTYPE_L4_NONFRAG,
		RTE_PTYPE_UNKNOWN
	};
	static const uint32_t ptypes_overlay[] = {
		RTE_PTYPE_L2_ETHER,
		RTE_PTYPE_L2_ETHER_VLAN,
		RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
		RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
		RTE_PTYPE_L4_TCP,
		RTE_PTYPE_L4_UDP,
		RTE_PTYPE_L4_FRAG,
		RTE_PTYPE_L4_NONFRAG,
		RTE_PTYPE_TUNNEL_GRENAT,
		RTE_PTYPE_INNER_L2_ETHER,
		RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
		RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
		RTE_PTYPE_INNER_L4_TCP,
		RTE_PTYPE_INNER_L4_UDP,
		RTE_PTYPE_INNER_L4_FRAG,
		RTE_PTYPE_INNER_L4_NONFRAG,
		RTE_PTYPE_UNKNOWN
	};

	if (dev->rx_pkt_burst != enic_dummy_recv_pkts &&
	    dev->rx_pkt_burst != NULL) {
		struct enic *enic = pmd_priv(dev);
		if (enic->overlay_offload)
			return ptypes_overlay;
		else
			return ptypes;
	}
	return NULL;
}

static void enicpmd_dev_promiscuous_enable(struct rte_eth_dev *eth_dev)
{
	struct enic *enic = pmd_priv(eth_dev);

	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
		return;

	ENICPMD_FUNC_TRACE();

	enic->promisc = 1;
	enic_add_packet_filter(enic);
}

static void enicpmd_dev_promiscuous_disable(struct rte_eth_dev *eth_dev)
{
	struct enic *enic = pmd_priv(eth_dev);

	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
		return;

	ENICPMD_FUNC_TRACE();
	enic->promisc = 0;
	enic_add_packet_filter(enic);
}

static void enicpmd_dev_allmulticast_enable(struct rte_eth_dev *eth_dev)
{
	struct enic *enic = pmd_priv(eth_dev);

	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
		return;

	ENICPMD_FUNC_TRACE();
	enic->allmulti = 1;
	enic_add_packet_filter(enic);
}

static void enicpmd_dev_allmulticast_disable(struct rte_eth_dev *eth_dev)
{
	struct enic *enic = pmd_priv(eth_dev);

	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
		return;

	ENICPMD_FUNC_TRACE();
	enic->allmulti = 0;
	enic_add_packet_filter(enic);
}

static int enicpmd_add_mac_addr(struct rte_eth_dev *eth_dev,
	struct ether_addr *mac_addr,
	__rte_unused uint32_t index, __rte_unused uint32_t pool)
{
	struct enic *enic = pmd_priv(eth_dev);

	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
		return -E_RTE_SECONDARY;

	ENICPMD_FUNC_TRACE();
	return enic_set_mac_address(enic, mac_addr->addr_bytes);
}

static void enicpmd_remove_mac_addr(struct rte_eth_dev *eth_dev, uint32_t index)
{
	struct enic *enic = pmd_priv(eth_dev);

	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
		return;

	ENICPMD_FUNC_TRACE();
	if (enic_del_mac_address(enic, index))
		dev_err(enic, "del mac addr failed\n");
}

static int enicpmd_set_mac_addr(struct rte_eth_dev *eth_dev,
				struct ether_addr *addr)
{
	struct enic *enic = pmd_priv(eth_dev);
	int ret;

	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
		return -E_RTE_SECONDARY;

	ENICPMD_FUNC_TRACE();
	ret = enic_del_mac_address(enic, 0);
	if (ret)
		return ret;
	return enic_set_mac_address(enic, addr->addr_bytes);
}

static void debug_log_add_del_addr(struct ether_addr *addr, bool add)
{
	char mac_str[ETHER_ADDR_FMT_SIZE];

	ether_format_addr(mac_str, ETHER_ADDR_FMT_SIZE, addr);
	PMD_INIT_LOG(DEBUG, " %s address %s\n",
		     add ? "add" : "remove", mac_str);
}

static int enicpmd_set_mc_addr_list(struct rte_eth_dev *eth_dev,
				    struct ether_addr *mc_addr_set,
				    uint32_t nb_mc_addr)
{
	struct enic *enic = pmd_priv(eth_dev);
	char mac_str[ETHER_ADDR_FMT_SIZE];
	struct ether_addr *addr;
	uint32_t i, j;
	int ret;

	ENICPMD_FUNC_TRACE();

	/* Validate the given addresses first */
	for (i = 0; i < nb_mc_addr && mc_addr_set != NULL; i++) {
		addr = &mc_addr_set[i];
		if (!is_multicast_ether_addr(addr) ||
		    is_broadcast_ether_addr(addr)) {
			ether_format_addr(mac_str, ETHER_ADDR_FMT_SIZE, addr);
			PMD_INIT_LOG(ERR, " invalid multicast address %s\n",
				     mac_str);
			return -EINVAL;
		}
	}

	/* Flush all if requested */
	if (nb_mc_addr == 0 || mc_addr_set == NULL) {
		PMD_INIT_LOG(DEBUG, " flush multicast addresses\n");
		for (i = 0; i < enic->mc_count; i++) {
			addr = &enic->mc_addrs[i];
			debug_log_add_del_addr(addr, false);
			ret = vnic_dev_del_addr(enic->vdev, addr->addr_bytes);
			if (ret)
				return ret;
		}
		enic->mc_count = 0;
		return 0;
	}

	if (nb_mc_addr > ENIC_MULTICAST_PERFECT_FILTERS) {
		PMD_INIT_LOG(ERR, " too many multicast addresses: max=%d\n",
			     ENIC_MULTICAST_PERFECT_FILTERS);
		return -ENOSPC;
	}
	/*
	 * devcmd is slow, so apply the difference instead of flushing and
	 * adding everything.
	 * 1. Delete addresses on the NIC but not on the host
	 */
	for (i = 0; i < enic->mc_count; i++) {
		addr = &enic->mc_addrs[i];
		for (j = 0; j < nb_mc_addr; j++) {
			if (is_same_ether_addr(addr, &mc_addr_set[j]))
				break;
		}
		if (j < nb_mc_addr)
			continue;
		debug_log_add_del_addr(addr, false);
		ret = vnic_dev_del_addr(enic->vdev, addr->addr_bytes);
		if (ret)
			return ret;
	}
	/* 2. Add addresses on the host but not on the NIC */
	for (i = 0; i < nb_mc_addr; i++) {
		addr = &mc_addr_set[i];
		for (j = 0; j < enic->mc_count; j++) {
			if (is_same_ether_addr(addr, &enic->mc_addrs[j]))
				break;
		}
		if (j < enic->mc_count)
			continue;
		debug_log_add_del_addr(addr, true);
		ret = vnic_dev_add_addr(enic->vdev, addr->addr_bytes);
		if (ret)
			return ret;
	}
	/* Keep a copy so we can flush/apply later on.. */
	memcpy(enic->mc_addrs, mc_addr_set,
	       nb_mc_addr * sizeof(struct ether_addr));
	enic->mc_count = nb_mc_addr;
	return 0;
}

static int enicpmd_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
{
	struct enic *enic = pmd_priv(eth_dev);

	ENICPMD_FUNC_TRACE();
	return enic_set_mtu(enic, mtu);
}

static int enicpmd_dev_rss_reta_query(struct rte_eth_dev *dev,
				      struct rte_eth_rss_reta_entry64
				      *reta_conf,
				      uint16_t reta_size)
{
	struct enic *enic = pmd_priv(dev);
	uint16_t i, idx, shift;

	ENICPMD_FUNC_TRACE();
	if (reta_size != ENIC_RSS_RETA_SIZE) {
		dev_err(enic, "reta_query: wrong reta_size. given=%u expected=%u\n",
			reta_size, ENIC_RSS_RETA_SIZE);
		return -EINVAL;
	}

	for (i = 0; i < reta_size; i++) {
		idx = i / RTE_RETA_GROUP_SIZE;
		shift = i % RTE_RETA_GROUP_SIZE;
		if (reta_conf[idx].mask & (1ULL << shift))
			reta_conf[idx].reta[shift] = enic_sop_rq_idx_to_rte_idx(
				enic->rss_cpu.cpu[i / 4].b[i % 4]);
	}

	return 0;
}

static int enicpmd_dev_rss_reta_update(struct rte_eth_dev *dev,
				       struct rte_eth_rss_reta_entry64
				       *reta_conf,
				       uint16_t reta_size)
{
	struct enic *enic = pmd_priv(dev);
	union vnic_rss_cpu rss_cpu;
	uint16_t i, idx, shift;

	ENICPMD_FUNC_TRACE();
	if (reta_size != ENIC_RSS_RETA_SIZE) {
		dev_err(enic, "reta_update: wrong reta_size. given=%u"
			" expected=%u\n",
			reta_size, ENIC_RSS_RETA_SIZE);
		return -EINVAL;
	}
	/*
	 * Start with the current reta and modify it per reta_conf, as we
	 * need to push the entire reta even if we only modify one entry.
	 */
	rss_cpu = enic->rss_cpu;
	for (i = 0; i < reta_size; i++) {
		idx = i / RTE_RETA_GROUP_SIZE;
		shift = i % RTE_RETA_GROUP_SIZE;
		if (reta_conf[idx].mask & (1ULL << shift))
			rss_cpu.cpu[i / 4].b[i % 4] =
				enic_rte_rq_idx_to_sop_idx(
					reta_conf[idx].reta[shift]);
	}
	return enic_set_rss_reta(enic, &rss_cpu);
}

static int enicpmd_dev_rss_hash_update(struct rte_eth_dev *dev,
				       struct rte_eth_rss_conf *rss_conf)
{
	struct enic *enic = pmd_priv(dev);

	ENICPMD_FUNC_TRACE();
	return enic_set_rss_conf(enic, rss_conf);
}

static int enicpmd_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
					 struct rte_eth_rss_conf *rss_conf)
{
	struct enic *enic = pmd_priv(dev);

	ENICPMD_FUNC_TRACE();
	if (rss_conf == NULL)
		return -EINVAL;
	if (rss_conf->rss_key != NULL &&
	    rss_conf->rss_key_len < ENIC_RSS_HASH_KEY_SIZE) {
		dev_err(enic, "rss_hash_conf_get: wrong rss_key_len. given=%u"
			" expected=%u+\n",
			rss_conf->rss_key_len, ENIC_RSS_HASH_KEY_SIZE);
		return -EINVAL;
	}
	rss_conf->rss_hf = enic->rss_hf;
	if (rss_conf->rss_key != NULL) {
		int i;
		for (i = 0; i < ENIC_RSS_HASH_KEY_SIZE; i++) {
			rss_conf->rss_key[i] =
				enic->rss_key.key[i / 10].b[i % 10];
		}
		rss_conf->rss_key_len = ENIC_RSS_HASH_KEY_SIZE;
	}
	return 0;
}

static void enicpmd_dev_rxq_info_get(struct rte_eth_dev *dev,
				     uint16_t rx_queue_id,
				     struct rte_eth_rxq_info *qinfo)
{
	struct enic *enic = pmd_priv(dev);
	struct vnic_rq *rq_sop;
	struct vnic_rq *rq_data;
	struct rte_eth_rxconf *conf;
	uint16_t sop_queue_idx;
	uint16_t data_queue_idx;

	ENICPMD_FUNC_TRACE();
	sop_queue_idx = enic_rte_rq_idx_to_sop_idx(rx_queue_id);
	data_queue_idx = enic_rte_rq_idx_to_data_idx(rx_queue_id);
	rq_sop = &enic->rq[sop_queue_idx];
	rq_data = &enic->rq[data_queue_idx]; /* valid if data_queue_enable */
	qinfo->mp = rq_sop->mp;
	qinfo->scattered_rx = rq_sop->data_queue_enable;
	qinfo->nb_desc = rq_sop->ring.desc_count;
	if (qinfo->scattered_rx)
		qinfo->nb_desc += rq_data->ring.desc_count;
	conf = &qinfo->conf;
	memset(conf, 0, sizeof(*conf));
	conf->rx_free_thresh = rq_sop->rx_free_thresh;
	conf->rx_drop_en = 1;
	/*
	 * Except VLAN stripping (port setting), all the checksum offloads
	 * are always enabled.
	 */
	conf->offloads = enic->rx_offload_capa;
	if (!enic->ig_vlan_strip_en)
		conf->offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP;
	/* rx_thresh and other fields are not applicable for enic */
}

static void enicpmd_dev_txq_info_get(struct rte_eth_dev *dev,
				     uint16_t tx_queue_id,
				     struct rte_eth_txq_info *qinfo)
{
	struct enic *enic = pmd_priv(dev);
	struct vnic_wq *wq = &enic->wq[tx_queue_id];

	ENICPMD_FUNC_TRACE();
	qinfo->nb_desc = wq->ring.desc_count;
	memset(&qinfo->conf, 0, sizeof(qinfo->conf));
	qinfo->conf.offloads = wq->offloads;
	/* tx_thresh, and all the other fields are not applicable for enic */
}

static int enicpmd_dev_rx_queue_intr_enable(struct rte_eth_dev *eth_dev,
					    uint16_t rx_queue_id)
{
	struct enic *enic = pmd_priv(eth_dev);

	ENICPMD_FUNC_TRACE();
	vnic_intr_unmask(&enic->intr[rx_queue_id + ENICPMD_RXQ_INTR_OFFSET]);
	return 0;
}

static int enicpmd_dev_rx_queue_intr_disable(struct rte_eth_dev *eth_dev,
					     uint16_t rx_queue_id)
{
	struct enic *enic = pmd_priv(eth_dev);

	ENICPMD_FUNC_TRACE();
	vnic_intr_mask(&enic->intr[rx_queue_id + ENICPMD_RXQ_INTR_OFFSET]);
	return 0;
}

static int udp_tunnel_common_check(struct enic *enic,
				   struct rte_eth_udp_tunnel *tnl)
{
	if (tnl->prot_type != RTE_TUNNEL_TYPE_VXLAN)
		return -ENOTSUP;
	if (!enic->overlay_offload) {
		PMD_INIT_LOG(DEBUG, " vxlan (overlay offload) is not "
			     "supported\n");
		return -ENOTSUP;
	}
	return 0;
}

static int update_vxlan_port(struct enic *enic, uint16_t port)
{
	if (vnic_dev_overlay_offload_cfg(enic->vdev,
					 OVERLAY_CFG_VXLAN_PORT_UPDATE,
					 port)) {
		PMD_INIT_LOG(DEBUG, " failed to update vxlan port\n");
		return -EINVAL;
	}
	PMD_INIT_LOG(DEBUG, " updated vxlan port to %u\n", port);
	enic->vxlan_port = port;
	return 0;
}

static int enicpmd_dev_udp_tunnel_port_add(struct rte_eth_dev *eth_dev,
					   struct rte_eth_udp_tunnel *tnl)
{
	struct enic *enic = pmd_priv(eth_dev);
	int ret;

	ENICPMD_FUNC_TRACE();
	ret = udp_tunnel_common_check(enic, tnl);
	if (ret)
		return ret;
	/*
	 * The NIC has 1 configurable VXLAN port number. "Adding" a new port
	 * number replaces it.
	 */
	if (tnl->udp_port == enic->vxlan_port || tnl->udp_port == 0) {
		PMD_INIT_LOG(DEBUG, " %u is already configured or invalid\n",
			     tnl->udp_port);
		return -EINVAL;
	}
	return update_vxlan_port(enic, tnl->udp_port);
}

static int enicpmd_dev_udp_tunnel_port_del(struct rte_eth_dev *eth_dev,
					   struct rte_eth_udp_tunnel *tnl)
{
	struct enic *enic = pmd_priv(eth_dev);
	int ret;

	ENICPMD_FUNC_TRACE();
	ret = udp_tunnel_common_check(enic, tnl);
	if (ret)
		return ret;
	/*
	 * Clear the previously set port number and restore the
	 * hardware default port number. Some drivers disable VXLAN
	 * offloads when there are no configured port numbers. But
	 * enic does not do that as VXLAN is part of overlay offload,
	 * which is tied to inner RSS and TSO.
	 */
	if (tnl->udp_port != enic->vxlan_port) {
		PMD_INIT_LOG(DEBUG, " %u is not a configured vxlan port\n",
			     tnl->udp_port);
		return -EINVAL;
	}
	return update_vxlan_port(enic, ENIC_DEFAULT_VXLAN_PORT);
}

static int enicpmd_dev_fw_version_get(struct rte_eth_dev *eth_dev,
				      char *fw_version, size_t fw_size)
{
	struct vnic_devcmd_fw_info *info;
	struct enic *enic;
	int ret;

	ENICPMD_FUNC_TRACE();
	if (fw_version == NULL || fw_size <= 0)
		return -EINVAL;
	enic = pmd_priv(eth_dev);
	ret = vnic_dev_fw_info(enic->vdev, &info);
	if (ret)
		return ret;
	snprintf(fw_version, fw_size, "%s %s",
		 info->fw_version, info->fw_build);
	fw_version[fw_size - 1] = '\0';
	return 0;
}

static const struct eth_dev_ops enicpmd_eth_dev_ops = {
	.dev_configure        = enicpmd_dev_configure,
	.dev_start            = enicpmd_dev_start,
	.dev_stop             = enicpmd_dev_stop,
	.dev_set_link_up      = NULL,
	.dev_set_link_down    = NULL,
	.dev_close            = enicpmd_dev_close,
	.promiscuous_enable   = enicpmd_dev_promiscuous_enable,
	.promiscuous_disable  = enicpmd_dev_promiscuous_disable,
	.allmulticast_enable  = enicpmd_dev_allmulticast_enable,
	.allmulticast_disable = enicpmd_dev_allmulticast_disable,
	.link_update          = enicpmd_dev_link_update,
	.stats_get            = enicpmd_dev_stats_get,
	.stats_reset          = enicpmd_dev_stats_reset,
	.queue_stats_mapping_set = NULL,
	.dev_infos_get        = enicpmd_dev_info_get,
	.dev_supported_ptypes_get = enicpmd_dev_supported_ptypes_get,
	.mtu_set              = enicpmd_mtu_set,
	.vlan_filter_set      = NULL,
	.vlan_tpid_set        = NULL,
	.vlan_offload_set     = enicpmd_vlan_offload_set,
	.vlan_strip_queue_set = NULL,
	.rx_queue_start       = enicpmd_dev_rx_queue_start,
	.rx_queue_stop        = enicpmd_dev_rx_queue_stop,
	.tx_queue_start       = enicpmd_dev_tx_queue_start,
	.tx_queue_stop        = enicpmd_dev_tx_queue_stop,
	.rx_queue_setup       = enicpmd_dev_rx_queue_setup,
	.rx_queue_release     = enicpmd_dev_rx_queue_release,
	.rx_queue_count       = enicpmd_dev_rx_queue_count,
	.rx_descriptor_done   = NULL,
	.tx_queue_setup       = enicpmd_dev_tx_queue_setup,
	.tx_queue_release     = enicpmd_dev_tx_queue_release,
	.rx_queue_intr_enable = enicpmd_dev_rx_queue_intr_enable,
	.rx_queue_intr_disable = enicpmd_dev_rx_queue_intr_disable,
	.rxq_info_get         = enicpmd_dev_rxq_info_get,
	.txq_info_get         = enicpmd_dev_txq_info_get,
	.dev_led_on           = NULL,
	.dev_led_off          = NULL,
	.flow_ctrl_get        = NULL,
	.flow_ctrl_set        = NULL,
	.priority_flow_ctrl_set = NULL,
	.mac_addr_add         = enicpmd_add_mac_addr,
	.mac_addr_remove      = enicpmd_remove_mac_addr,
	.mac_addr_set         = enicpmd_set_mac_addr,
	.set_mc_addr_list     = enicpmd_set_mc_addr_list,
	.filter_ctrl          = enicpmd_dev_filter_ctrl,
	.reta_query           = enicpmd_dev_rss_reta_query,
	.reta_update          = enicpmd_dev_rss_reta_update,
	.rss_hash_conf_get    = enicpmd_dev_rss_hash_conf_get,
	.rss_hash_update      = enicpmd_dev_rss_hash_update,
	.udp_tunnel_port_add  = enicpmd_dev_udp_tunnel_port_add,
	.udp_tunnel_port_del  = enicpmd_dev_udp_tunnel_port_del,
	.fw_version_get       = enicpmd_dev_fw_version_get,
};

static int enic_parse_zero_one(const char *key,
			       const char *value,
			       void *opaque)
{
	struct enic *enic;
	bool b;

	enic = (struct enic *)opaque;
	if (strcmp(value, "0") == 0) {
		b = false;
	} else if (strcmp(value, "1") == 0) {
		b = true;
	} else {
		dev_err(enic, "Invalid value for %s"
			": expected=0|1 given=%s\n", key, value);
		return -EINVAL;
	}
	if (strcmp(key, ENIC_DEVARG_DISABLE_OVERLAY) == 0)
		enic->disable_overlay = b;
	if (strcmp(key, ENIC_DEVARG_ENABLE_AVX2_RX) == 0)
		enic->enable_avx2_rx = b;
	return 0;
}

static int enic_parse_ig_vlan_rewrite(__rte_unused const char *key,
				      const char *value,
				      void *opaque)
{
	struct enic *enic;

	enic = (struct enic *)opaque;
	if (strcmp(value, "trunk") == 0) {
		/* Trunk mode: always tag */
		enic->ig_vlan_rewrite_mode = IG_VLAN_REWRITE_MODE_DEFAULT_TRUNK;
	} else if (strcmp(value, "untag") == 0) {
		/* Untag default VLAN mode: untag if VLAN = default VLAN */
		enic->ig_vlan_rewrite_mode =
			IG_VLAN_REWRITE_MODE_UNTAG_DEFAULT_VLAN;
	} else if (strcmp(value, "priority") == 0) {
		/*
		 * Priority-tag default VLAN mode: priority tag (VLAN header
		 * with ID=0) if VLAN = default
		 */
		enic->ig_vlan_rewrite_mode =
			IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN;
	} else if (strcmp(value, "pass") == 0) {
		/* Pass through mode: do not touch tags */
		enic->ig_vlan_rewrite_mode = IG_VLAN_REWRITE_MODE_PASS_THRU;
	} else {
		dev_err(enic, "Invalid value for " ENIC_DEVARG_IG_VLAN_REWRITE
			": expected=trunk|untag|priority|pass given=%s\n",
			value);
		return -EINVAL;
	}
	return 0;
}

static int enic_check_devargs(struct rte_eth_dev *dev)
{
	static const char *const valid_keys[] = {
		ENIC_DEVARG_DISABLE_OVERLAY,
		ENIC_DEVARG_ENABLE_AVX2_RX,
		ENIC_DEVARG_IG_VLAN_REWRITE,
		NULL};
	struct enic *enic = pmd_priv(dev);
	struct rte_kvargs *kvlist;

	ENICPMD_FUNC_TRACE();

	enic->disable_overlay = false;
	enic->enable_avx2_rx = false;
	enic->ig_vlan_rewrite_mode = IG_VLAN_REWRITE_MODE_PASS_THRU;
	if (!dev->device->devargs)
		return 0;
	kvlist = rte_kvargs_parse(dev->device->devargs->args, valid_keys);
	if (!kvlist)
		return -EINVAL;
	if (rte_kvargs_process(kvlist, ENIC_DEVARG_DISABLE_OVERLAY,
			       enic_parse_zero_one, enic) < 0 ||
	    rte_kvargs_process(kvlist, ENIC_DEVARG_ENABLE_AVX2_RX,
			       enic_parse_zero_one, enic) < 0 ||
	    rte_kvargs_process(kvlist, ENIC_DEVARG_IG_VLAN_REWRITE,
			       enic_parse_ig_vlan_rewrite, enic) < 0) {
		rte_kvargs_free(kvlist);
		return -EINVAL;
	}
	rte_kvargs_free(kvlist);
	return 0;
}

/* Initialize the driver
 * It returns 0 on success.
 */
static int eth_enicpmd_dev_init(struct rte_eth_dev *eth_dev)
{
	struct rte_pci_device *pdev;
	struct rte_pci_addr *addr;
	struct enic *enic = pmd_priv(eth_dev);
	int err;

	ENICPMD_FUNC_TRACE();

	enic->port_id = eth_dev->data->port_id;
	enic->rte_dev = eth_dev;
	eth_dev->dev_ops = &enicpmd_eth_dev_ops;
	eth_dev->rx_pkt_burst = &enic_recv_pkts;
	eth_dev->tx_pkt_burst = &enic_xmit_pkts;
	eth_dev->tx_pkt_prepare = &enic_prep_pkts;
	/* Let rte_eth_dev_close() release the port resources */
	eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE;

	pdev = RTE_ETH_DEV_TO_PCI(eth_dev);
	rte_eth_copy_pci_info(eth_dev, pdev);
	enic->pdev = pdev;
	addr = &pdev->addr;

	snprintf(enic->bdf_name, ENICPMD_BDF_LENGTH, "%04x:%02x:%02x.%x",
		addr->domain, addr->bus, addr->devid, addr->function);

	err = enic_check_devargs(eth_dev);
	if (err)
		return err;
	return enic_probe(enic);
}

static int eth_enic_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
	struct rte_pci_device *pci_dev)
{
	return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct enic),
		eth_enicpmd_dev_init);
}

static int eth_enic_pci_remove(struct rte_pci_device *pci_dev)
{
	return rte_eth_dev_pci_generic_remove(pci_dev, NULL);
}

static struct rte_pci_driver rte_enic_pmd = {
	.id_table = pci_id_enic_map,
	.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
		     RTE_PCI_DRV_IOVA_AS_VA,
	.probe = eth_enic_pci_probe,
	.remove = eth_enic_pci_remove,
};

RTE_PMD_REGISTER_PCI(net_enic, rte_enic_pmd);
RTE_PMD_REGISTER_PCI_TABLE(net_enic, pci_id_enic_map);
RTE_PMD_REGISTER_KMOD_DEP(net_enic, "* igb_uio | uio_pci_generic | vfio-pci");
RTE_PMD_REGISTER_PARAM_STRING(net_enic,
	ENIC_DEVARG_DISABLE_OVERLAY "=0|1 "
	ENIC_DEVARG_ENABLE_AVX2_RX "=0|1 "
	ENIC_DEVARG_IG_VLAN_REWRITE "=trunk|untag|priority|pass");
/* test a valid case */
static int test_valid_kvargs(void)
{
	struct rte_kvargs *kvlist;
	const char *args;
	const char *valid_keys_list[] = { "foo", "check", NULL };
	const char **valid_keys;

	/* empty args is valid */
	args = "";
	valid_keys = NULL;
	kvlist = rte_kvargs_parse(args, valid_keys);
	if (kvlist == NULL) {
		printf("rte_kvargs_parse() error");
		goto fail;
	}
	rte_kvargs_free(kvlist);

	/* first test without valid_keys */
	args = "foo=1234,check=value0,check=value1";
	valid_keys = NULL;
	kvlist = rte_kvargs_parse(args, valid_keys);
	if (kvlist == NULL) {
		printf("rte_kvargs_parse() error");
		goto fail;
	}
	/* call check_handler() for all entries with key="check" */
	count = 0;
	if (rte_kvargs_process(kvlist, "check", check_handler, NULL) < 0) {
		printf("rte_kvargs_process() error\n");
		rte_kvargs_free(kvlist);
		goto fail;
	}
	if (count != 2) {
		printf("invalid count value %d after rte_kvargs_process(check)\n",
			count);
		rte_kvargs_free(kvlist);
		goto fail;
	}
	count = 0;
	/* call check_handler() for all entries with key="unexistant_key" */
	if (rte_kvargs_process(kvlist, "unexistant_key", check_handler, NULL) < 0) {
		printf("rte_kvargs_process() error\n");
		rte_kvargs_free(kvlist);
		goto fail;
	}
	if (count != 0) {
		printf("invalid count value %d after rte_kvargs_process(unexistant_key)\n",
			count);
		rte_kvargs_free(kvlist);
		goto fail;
	}
	/* count all entries with key="foo" */
	count = rte_kvargs_count(kvlist, "foo");
	if (count != 1) {
		printf("invalid count value %d after rte_kvargs_count(foo)\n",
			count);
		rte_kvargs_free(kvlist);
		goto fail;
	}
	/* count all entries */
	count = rte_kvargs_count(kvlist, NULL);
	if (count != 3) {
		printf("invalid count value %d after rte_kvargs_count(NULL)\n",
			count);
		rte_kvargs_free(kvlist);
		goto fail;
	}
	/* count all entries with key="unexistant_key" */
	count = rte_kvargs_count(kvlist, "unexistant_key");
	if (count != 0) {
		printf("invalid count value %d after rte_kvargs_count(unexistant_key)\n",
			count);
		rte_kvargs_free(kvlist);
		goto fail;
	}
	rte_kvargs_free(kvlist);

	/* second test using valid_keys */
	args = "foo=droids,check=value0,check=value1,check=wrong_value";
	valid_keys = valid_keys_list;
	kvlist = rte_kvargs_parse(args, valid_keys);
	if (kvlist == NULL) {
		printf("rte_kvargs_parse() error");
		goto fail;
	}
	/* call check_handler() on all entries with key="check", it
	 * should fail as the value is not recognized by the handler */
	if (rte_kvargs_process(kvlist, "check", check_handler, NULL) == 0) {
		printf("rte_kvargs_process() is success bu should not\n");
		rte_kvargs_free(kvlist);
		goto fail;
	}
	count = rte_kvargs_count(kvlist, "check");
	if (count != 3) {
		printf("invalid count value %d after rte_kvargs_count(check)\n",
			count);
		rte_kvargs_free(kvlist);
		goto fail;
	}
	rte_kvargs_free(kvlist);

	return 0;

 fail:
	printf("while processing <%s>", args);
	if (valid_keys != NULL && *valid_keys != NULL) {
		printf(" using valid_keys=<%s", *valid_keys);
		while (*(++valid_keys) != NULL)
			printf(",%s", *valid_keys);
		printf(">");
	}
	printf("\n");
	return -1;
}