qede_main.c 104.4 KB
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/* QLogic qede NIC Driver
* Copyright (c) 2015 QLogic Corporation
*
* This software is available under the terms of the GNU General Public License
* (GPL) Version 2, available from the file COPYING in the main directory of
* this source tree.
*/

#include <linux/module.h>
#include <linux/pci.h>
#include <linux/version.h>
#include <linux/device.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/string.h>
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>
#include <asm/byteorder.h>
#include <asm/param.h>
#include <linux/io.h>
#include <linux/netdev_features.h>
#include <linux/udp.h>
#include <linux/tcp.h>
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#include <net/udp_tunnel.h>
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#include <linux/ip.h>
#include <net/ipv6.h>
#include <net/tcp.h>
#include <linux/if_ether.h>
#include <linux/if_vlan.h>
#include <linux/pkt_sched.h>
#include <linux/ethtool.h>
#include <linux/in.h>
#include <linux/random.h>
#include <net/ip6_checksum.h>
#include <linux/bitops.h>
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#include <linux/qed/qede_roce.h>
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#include "qede.h"

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static char version[] =
	"QLogic FastLinQ 4xxxx Ethernet Driver qede " DRV_MODULE_VERSION "\n";
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MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx Ethernet Driver");
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MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_MODULE_VERSION);

static uint debug;
module_param(debug, uint, 0);
MODULE_PARM_DESC(debug, " Default debug msglevel");

static const struct qed_eth_ops *qed_ops;

#define CHIP_NUM_57980S_40		0x1634
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#define CHIP_NUM_57980S_10		0x1666
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#define CHIP_NUM_57980S_MF		0x1636
#define CHIP_NUM_57980S_100		0x1644
#define CHIP_NUM_57980S_50		0x1654
#define CHIP_NUM_57980S_25		0x1656
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#define CHIP_NUM_57980S_IOV		0x1664
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#ifndef PCI_DEVICE_ID_NX2_57980E
#define PCI_DEVICE_ID_57980S_40		CHIP_NUM_57980S_40
#define PCI_DEVICE_ID_57980S_10		CHIP_NUM_57980S_10
#define PCI_DEVICE_ID_57980S_MF		CHIP_NUM_57980S_MF
#define PCI_DEVICE_ID_57980S_100	CHIP_NUM_57980S_100
#define PCI_DEVICE_ID_57980S_50		CHIP_NUM_57980S_50
#define PCI_DEVICE_ID_57980S_25		CHIP_NUM_57980S_25
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#define PCI_DEVICE_ID_57980S_IOV	CHIP_NUM_57980S_IOV
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#endif

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enum qede_pci_private {
	QEDE_PRIVATE_PF,
	QEDE_PRIVATE_VF
};

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static const struct pci_device_id qede_pci_tbl[] = {
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	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_40), QEDE_PRIVATE_PF},
	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_10), QEDE_PRIVATE_PF},
	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_MF), QEDE_PRIVATE_PF},
	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_100), QEDE_PRIVATE_PF},
	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_50), QEDE_PRIVATE_PF},
	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_25), QEDE_PRIVATE_PF},
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#ifdef CONFIG_QED_SRIOV
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	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_IOV), QEDE_PRIVATE_VF},
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#endif
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	{ 0 }
};

MODULE_DEVICE_TABLE(pci, qede_pci_tbl);

static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id);

#define TX_TIMEOUT		(5 * HZ)

static void qede_remove(struct pci_dev *pdev);
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static void qede_shutdown(struct pci_dev *pdev);
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static int qede_alloc_rx_buffer(struct qede_dev *edev,
				struct qede_rx_queue *rxq);
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static void qede_link_update(void *dev, struct qed_link_output *link);
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#ifdef CONFIG_QED_SRIOV
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static int qede_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, u8 qos,
			    __be16 vlan_proto)
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{
	struct qede_dev *edev = netdev_priv(ndev);

	if (vlan > 4095) {
		DP_NOTICE(edev, "Illegal vlan value %d\n", vlan);
		return -EINVAL;
	}

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	if (vlan_proto != htons(ETH_P_8021Q))
		return -EPROTONOSUPPORT;

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	DP_VERBOSE(edev, QED_MSG_IOV, "Setting Vlan 0x%04x to VF [%d]\n",
		   vlan, vf);

	return edev->ops->iov->set_vlan(edev->cdev, vlan, vf);
}

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static int qede_set_vf_mac(struct net_device *ndev, int vfidx, u8 *mac)
{
	struct qede_dev *edev = netdev_priv(ndev);

	DP_VERBOSE(edev, QED_MSG_IOV,
		   "Setting MAC %02x:%02x:%02x:%02x:%02x:%02x to VF [%d]\n",
		   mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], vfidx);

	if (!is_valid_ether_addr(mac)) {
		DP_VERBOSE(edev, QED_MSG_IOV, "MAC address isn't valid\n");
		return -EINVAL;
	}

	return edev->ops->iov->set_mac(edev->cdev, mac, vfidx);
}

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static int qede_sriov_configure(struct pci_dev *pdev, int num_vfs_param)
{
	struct qede_dev *edev = netdev_priv(pci_get_drvdata(pdev));
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	struct qed_dev_info *qed_info = &edev->dev_info.common;
	int rc;
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	DP_VERBOSE(edev, QED_MSG_IOV, "Requested %d VFs\n", num_vfs_param);

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	rc = edev->ops->iov->configure(edev->cdev, num_vfs_param);

	/* Enable/Disable Tx switching for PF */
	if ((rc == num_vfs_param) && netif_running(edev->ndev) &&
	    qed_info->mf_mode != QED_MF_NPAR && qed_info->tx_switching) {
		struct qed_update_vport_params params;

		memset(&params, 0, sizeof(params));
		params.vport_id = 0;
		params.update_tx_switching_flg = 1;
		params.tx_switching_flg = num_vfs_param ? 1 : 0;
		edev->ops->vport_update(edev->cdev, &params);
	}

	return rc;
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}
#endif

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static struct pci_driver qede_pci_driver = {
	.name = "qede",
	.id_table = qede_pci_tbl,
	.probe = qede_probe,
	.remove = qede_remove,
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	.shutdown = qede_shutdown,
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#ifdef CONFIG_QED_SRIOV
	.sriov_configure = qede_sriov_configure,
#endif
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};

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static void qede_force_mac(void *dev, u8 *mac, bool forced)
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{
	struct qede_dev *edev = dev;

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	/* MAC hints take effect only if we haven't set one already */
	if (is_valid_ether_addr(edev->ndev->dev_addr) && !forced)
		return;

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	ether_addr_copy(edev->ndev->dev_addr, mac);
	ether_addr_copy(edev->primary_mac, mac);
}

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static struct qed_eth_cb_ops qede_ll_ops = {
	{
		.link_update = qede_link_update,
	},
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	.force_mac = qede_force_mac,
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};

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static int qede_netdev_event(struct notifier_block *this, unsigned long event,
			     void *ptr)
{
	struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
	struct ethtool_drvinfo drvinfo;
	struct qede_dev *edev;

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	if (event != NETDEV_CHANGENAME && event != NETDEV_CHANGEADDR)
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		goto done;

	/* Check whether this is a qede device */
	if (!ndev || !ndev->ethtool_ops || !ndev->ethtool_ops->get_drvinfo)
		goto done;

	memset(&drvinfo, 0, sizeof(drvinfo));
	ndev->ethtool_ops->get_drvinfo(ndev, &drvinfo);
	if (strcmp(drvinfo.driver, "qede"))
		goto done;
	edev = netdev_priv(ndev);

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	switch (event) {
	case NETDEV_CHANGENAME:
		/* Notify qed of the name change */
		if (!edev->ops || !edev->ops->common)
			goto done;
		edev->ops->common->set_id(edev->cdev, edev->ndev->name, "qede");
		break;
	case NETDEV_CHANGEADDR:
		edev = netdev_priv(ndev);
		qede_roce_event_changeaddr(edev);
		break;
	}
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done:
	return NOTIFY_DONE;
}

static struct notifier_block qede_netdev_notifier = {
	.notifier_call = qede_netdev_event,
};

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static
int __init qede_init(void)
{
	int ret;

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	pr_info("qede_init: %s\n", version);
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	qed_ops = qed_get_eth_ops();
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	if (!qed_ops) {
		pr_notice("Failed to get qed ethtool operations\n");
		return -EINVAL;
	}

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	/* Must register notifier before pci ops, since we might miss
	 * interface rename after pci probe and netdev registeration.
	 */
	ret = register_netdevice_notifier(&qede_netdev_notifier);
	if (ret) {
		pr_notice("Failed to register netdevice_notifier\n");
		qed_put_eth_ops();
		return -EINVAL;
	}

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	ret = pci_register_driver(&qede_pci_driver);
	if (ret) {
		pr_notice("Failed to register driver\n");
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		unregister_netdevice_notifier(&qede_netdev_notifier);
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		qed_put_eth_ops();
		return -EINVAL;
	}

	return 0;
}

static void __exit qede_cleanup(void)
{
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	if (debug & QED_LOG_INFO_MASK)
		pr_info("qede_cleanup called\n");
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	unregister_netdevice_notifier(&qede_netdev_notifier);
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	pci_unregister_driver(&qede_pci_driver);
	qed_put_eth_ops();
}

module_init(qede_init);
module_exit(qede_cleanup);

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/* -------------------------------------------------------------------------
 * START OF FAST-PATH
 * -------------------------------------------------------------------------
 */

/* Unmap the data and free skb */
static int qede_free_tx_pkt(struct qede_dev *edev,
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			    struct qede_tx_queue *txq, int *len)
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{
	u16 idx = txq->sw_tx_cons & NUM_TX_BDS_MAX;
	struct sk_buff *skb = txq->sw_tx_ring[idx].skb;
	struct eth_tx_1st_bd *first_bd;
	struct eth_tx_bd *tx_data_bd;
	int bds_consumed = 0;
	int nbds;
	bool data_split = txq->sw_tx_ring[idx].flags & QEDE_TSO_SPLIT_BD;
	int i, split_bd_len = 0;

	if (unlikely(!skb)) {
		DP_ERR(edev,
		       "skb is null for txq idx=%d txq->sw_tx_cons=%d txq->sw_tx_prod=%d\n",
		       idx, txq->sw_tx_cons, txq->sw_tx_prod);
		return -1;
	}

	*len = skb->len;

	first_bd = (struct eth_tx_1st_bd *)qed_chain_consume(&txq->tx_pbl);

	bds_consumed++;

	nbds = first_bd->data.nbds;

	if (data_split) {
		struct eth_tx_bd *split = (struct eth_tx_bd *)
			qed_chain_consume(&txq->tx_pbl);
		split_bd_len = BD_UNMAP_LEN(split);
		bds_consumed++;
	}
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	dma_unmap_single(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd),
			 BD_UNMAP_LEN(first_bd) + split_bd_len, DMA_TO_DEVICE);
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	/* Unmap the data of the skb frags */
	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++, bds_consumed++) {
		tx_data_bd = (struct eth_tx_bd *)
			qed_chain_consume(&txq->tx_pbl);
		dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(tx_data_bd),
			       BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
	}

	while (bds_consumed++ < nbds)
		qed_chain_consume(&txq->tx_pbl);

	/* Free skb */
	dev_kfree_skb_any(skb);
	txq->sw_tx_ring[idx].skb = NULL;
	txq->sw_tx_ring[idx].flags = 0;

	return 0;
}

/* Unmap the data and free skb when mapping failed during start_xmit */
static void qede_free_failed_tx_pkt(struct qede_dev *edev,
				    struct qede_tx_queue *txq,
				    struct eth_tx_1st_bd *first_bd,
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				    int nbd, bool data_split)
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{
	u16 idx = txq->sw_tx_prod & NUM_TX_BDS_MAX;
	struct sk_buff *skb = txq->sw_tx_ring[idx].skb;
	struct eth_tx_bd *tx_data_bd;
	int i, split_bd_len = 0;

	/* Return prod to its position before this skb was handled */
	qed_chain_set_prod(&txq->tx_pbl,
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			   le16_to_cpu(txq->tx_db.data.bd_prod), first_bd);
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	first_bd = (struct eth_tx_1st_bd *)qed_chain_produce(&txq->tx_pbl);

	if (data_split) {
		struct eth_tx_bd *split = (struct eth_tx_bd *)
					  qed_chain_produce(&txq->tx_pbl);
		split_bd_len = BD_UNMAP_LEN(split);
		nbd--;
	}

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	dma_unmap_single(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd),
			 BD_UNMAP_LEN(first_bd) + split_bd_len, DMA_TO_DEVICE);
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	/* Unmap the data of the skb frags */
	for (i = 0; i < nbd; i++) {
		tx_data_bd = (struct eth_tx_bd *)
			qed_chain_produce(&txq->tx_pbl);
		if (tx_data_bd->nbytes)
			dma_unmap_page(&edev->pdev->dev,
				       BD_UNMAP_ADDR(tx_data_bd),
				       BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
	}

	/* Return again prod to its position before this skb was handled */
	qed_chain_set_prod(&txq->tx_pbl,
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			   le16_to_cpu(txq->tx_db.data.bd_prod), first_bd);
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	/* Free skb */
	dev_kfree_skb_any(skb);
	txq->sw_tx_ring[idx].skb = NULL;
	txq->sw_tx_ring[idx].flags = 0;
}

static u32 qede_xmit_type(struct qede_dev *edev,
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			  struct sk_buff *skb, int *ipv6_ext)
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{
	u32 rc = XMIT_L4_CSUM;
	__be16 l3_proto;

	if (skb->ip_summed != CHECKSUM_PARTIAL)
		return XMIT_PLAIN;

	l3_proto = vlan_get_protocol(skb);
	if (l3_proto == htons(ETH_P_IPV6) &&
	    (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6))
		*ipv6_ext = 1;

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	if (skb->encapsulation) {
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		rc |= XMIT_ENC;
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		if (skb_is_gso(skb)) {
			unsigned short gso_type = skb_shinfo(skb)->gso_type;

			if ((gso_type & SKB_GSO_UDP_TUNNEL_CSUM) ||
			    (gso_type & SKB_GSO_GRE_CSUM))
				rc |= XMIT_ENC_GSO_L4_CSUM;

			rc |= XMIT_LSO;
			return rc;
		}
	}
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	if (skb_is_gso(skb))
		rc |= XMIT_LSO;

	return rc;
}

static void qede_set_params_for_ipv6_ext(struct sk_buff *skb,
					 struct eth_tx_2nd_bd *second_bd,
					 struct eth_tx_3rd_bd *third_bd)
{
	u8 l4_proto;
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	u16 bd2_bits1 = 0, bd2_bits2 = 0;
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	bd2_bits1 |= (1 << ETH_TX_DATA_2ND_BD_IPV6_EXT_SHIFT);
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	bd2_bits2 |= ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) &
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		     ETH_TX_DATA_2ND_BD_L4_HDR_START_OFFSET_W_MASK)
		    << ETH_TX_DATA_2ND_BD_L4_HDR_START_OFFSET_W_SHIFT;

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	bd2_bits1 |= (ETH_L4_PSEUDO_CSUM_CORRECT_LENGTH <<
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		      ETH_TX_DATA_2ND_BD_L4_PSEUDO_CSUM_MODE_SHIFT);

	if (vlan_get_protocol(skb) == htons(ETH_P_IPV6))
		l4_proto = ipv6_hdr(skb)->nexthdr;
	else
		l4_proto = ip_hdr(skb)->protocol;

	if (l4_proto == IPPROTO_UDP)
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		bd2_bits1 |= 1 << ETH_TX_DATA_2ND_BD_L4_UDP_SHIFT;
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	if (third_bd)
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		third_bd->data.bitfields |=
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			cpu_to_le16(((tcp_hdrlen(skb) / 4) &
				ETH_TX_DATA_3RD_BD_TCP_HDR_LEN_DW_MASK) <<
				ETH_TX_DATA_3RD_BD_TCP_HDR_LEN_DW_SHIFT);
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	second_bd->data.bitfields1 = cpu_to_le16(bd2_bits1);
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	second_bd->data.bitfields2 = cpu_to_le16(bd2_bits2);
}

static int map_frag_to_bd(struct qede_dev *edev,
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			  skb_frag_t *frag, struct eth_tx_bd *bd)
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{
	dma_addr_t mapping;

	/* Map skb non-linear frag data for DMA */
	mapping = skb_frag_dma_map(&edev->pdev->dev, frag, 0,
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				   skb_frag_size(frag), DMA_TO_DEVICE);
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	if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
		DP_NOTICE(edev, "Unable to map frag - dropping packet\n");
		return -ENOMEM;
	}

	/* Setup the data pointer of the frag data */
	BD_SET_UNMAP_ADDR_LEN(bd, mapping, skb_frag_size(frag));

	return 0;
}

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static u16 qede_get_skb_hlen(struct sk_buff *skb, bool is_encap_pkt)
{
	if (is_encap_pkt)
		return (skb_inner_transport_header(skb) +
			inner_tcp_hdrlen(skb) - skb->data);
	else
		return (skb_transport_header(skb) +
			tcp_hdrlen(skb) - skb->data);
}

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/* +2 for 1st BD for headers and 2nd BD for headlen (if required) */
#if ((MAX_SKB_FRAGS + 2) > ETH_TX_MAX_BDS_PER_NON_LSO_PACKET)
static bool qede_pkt_req_lin(struct qede_dev *edev, struct sk_buff *skb,
			     u8 xmit_type)
{
	int allowed_frags = ETH_TX_MAX_BDS_PER_NON_LSO_PACKET - 1;

	if (xmit_type & XMIT_LSO) {
		int hlen;

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		hlen = qede_get_skb_hlen(skb, xmit_type & XMIT_ENC);
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		/* linear payload would require its own BD */
		if (skb_headlen(skb) > hlen)
			allowed_frags--;
	}

	return (skb_shinfo(skb)->nr_frags > allowed_frags);
}
#endif

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static inline void qede_update_tx_producer(struct qede_tx_queue *txq)
{
	/* wmb makes sure that the BDs data is updated before updating the
	 * producer, otherwise FW may read old data from the BDs.
	 */
	wmb();
	barrier();
	writel(txq->tx_db.raw, txq->doorbell_addr);

	/* mmiowb is needed to synchronize doorbell writes from more than one
	 * processor. It guarantees that the write arrives to the device before
	 * the queue lock is released and another start_xmit is called (possibly
	 * on another CPU). Without this barrier, the next doorbell can bypass
	 * this doorbell. This is applicable to IA64/Altix systems.
	 */
	mmiowb();
}

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/* Main transmit function */
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static netdev_tx_t qede_start_xmit(struct sk_buff *skb,
				   struct net_device *ndev)
530 531 532 533 534 535 536 537 538 539 540 541 542 543 544
{
	struct qede_dev *edev = netdev_priv(ndev);
	struct netdev_queue *netdev_txq;
	struct qede_tx_queue *txq;
	struct eth_tx_1st_bd *first_bd;
	struct eth_tx_2nd_bd *second_bd = NULL;
	struct eth_tx_3rd_bd *third_bd = NULL;
	struct eth_tx_bd *tx_data_bd = NULL;
	u16 txq_index;
	u8 nbd = 0;
	dma_addr_t mapping;
	int rc, frag_idx = 0, ipv6_ext = 0;
	u8 xmit_type;
	u16 idx;
	u16 hlen;
545
	bool data_split = false;
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	/* Get tx-queue context and netdev index */
	txq_index = skb_get_queue_mapping(skb);
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	WARN_ON(txq_index >= QEDE_TSS_COUNT(edev));
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	txq = QEDE_TX_QUEUE(edev, txq_index);
	netdev_txq = netdev_get_tx_queue(ndev, txq_index);

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	WARN_ON(qed_chain_get_elem_left(&txq->tx_pbl) < (MAX_SKB_FRAGS + 1));
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	xmit_type = qede_xmit_type(edev, skb, &ipv6_ext);

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#if ((MAX_SKB_FRAGS + 2) > ETH_TX_MAX_BDS_PER_NON_LSO_PACKET)
	if (qede_pkt_req_lin(edev, skb, xmit_type)) {
		if (skb_linearize(skb)) {
			DP_NOTICE(edev,
				  "SKB linearization failed - silently dropping this SKB\n");
			dev_kfree_skb_any(skb);
			return NETDEV_TX_OK;
		}
	}
#endif

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	/* Fill the entry in the SW ring and the BDs in the FW ring */
	idx = txq->sw_tx_prod & NUM_TX_BDS_MAX;
	txq->sw_tx_ring[idx].skb = skb;
	first_bd = (struct eth_tx_1st_bd *)
		   qed_chain_produce(&txq->tx_pbl);
	memset(first_bd, 0, sizeof(*first_bd));
	first_bd->data.bd_flags.bitfields =
		1 << ETH_TX_1ST_BD_FLAGS_START_BD_SHIFT;

	/* Map skb linear data for DMA and set in the first BD */
	mapping = dma_map_single(&edev->pdev->dev, skb->data,
				 skb_headlen(skb), DMA_TO_DEVICE);
	if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
		DP_NOTICE(edev, "SKB mapping failed\n");
		qede_free_failed_tx_pkt(edev, txq, first_bd, 0, false);
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		qede_update_tx_producer(txq);
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		return NETDEV_TX_OK;
	}
	nbd++;
	BD_SET_UNMAP_ADDR_LEN(first_bd, mapping, skb_headlen(skb));

	/* In case there is IPv6 with extension headers or LSO we need 2nd and
	 * 3rd BDs.
	 */
	if (unlikely((xmit_type & XMIT_LSO) | ipv6_ext)) {
		second_bd = (struct eth_tx_2nd_bd *)
			qed_chain_produce(&txq->tx_pbl);
		memset(second_bd, 0, sizeof(*second_bd));

		nbd++;
		third_bd = (struct eth_tx_3rd_bd *)
			qed_chain_produce(&txq->tx_pbl);
		memset(third_bd, 0, sizeof(*third_bd));

		nbd++;
		/* We need to fill in additional data in second_bd... */
		tx_data_bd = (struct eth_tx_bd *)second_bd;
	}

	if (skb_vlan_tag_present(skb)) {
		first_bd->data.vlan = cpu_to_le16(skb_vlan_tag_get(skb));
		first_bd->data.bd_flags.bitfields |=
			1 << ETH_TX_1ST_BD_FLAGS_VLAN_INSERTION_SHIFT;
	}

	/* Fill the parsing flags & params according to the requested offload */
	if (xmit_type & XMIT_L4_CSUM) {
		/* We don't re-calculate IP checksum as it is already done by
		 * the upper stack
		 */
		first_bd->data.bd_flags.bitfields |=
			1 << ETH_TX_1ST_BD_FLAGS_L4_CSUM_SHIFT;

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		if (xmit_type & XMIT_ENC) {
			first_bd->data.bd_flags.bitfields |=
				1 << ETH_TX_1ST_BD_FLAGS_IP_CSUM_SHIFT;
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			first_bd->data.bitfields |=
			    1 << ETH_TX_DATA_1ST_BD_TUNN_FLAG_SHIFT;
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		}
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		/* Legacy FW had flipped behavior in regard to this bit -
		 * I.e., needed to set to prevent FW from touching encapsulated
		 * packets when it didn't need to.
		 */
		if (unlikely(txq->is_legacy))
			first_bd->data.bitfields ^=
			    1 << ETH_TX_DATA_1ST_BD_TUNN_FLAG_SHIFT;

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		/* If the packet is IPv6 with extension header, indicate that
		 * to FW and pass few params, since the device cracker doesn't
		 * support parsing IPv6 with extension header/s.
		 */
		if (unlikely(ipv6_ext))
			qede_set_params_for_ipv6_ext(skb, second_bd, third_bd);
	}

	if (xmit_type & XMIT_LSO) {
		first_bd->data.bd_flags.bitfields |=
			(1 << ETH_TX_1ST_BD_FLAGS_LSO_SHIFT);
		third_bd->data.lso_mss =
			cpu_to_le16(skb_shinfo(skb)->gso_size);

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		if (unlikely(xmit_type & XMIT_ENC)) {
			first_bd->data.bd_flags.bitfields |=
				1 << ETH_TX_1ST_BD_FLAGS_TUNN_IP_CSUM_SHIFT;
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			if (xmit_type & XMIT_ENC_GSO_L4_CSUM) {
				u8 tmp = ETH_TX_1ST_BD_FLAGS_TUNN_L4_CSUM_SHIFT;

				first_bd->data.bd_flags.bitfields |= 1 << tmp;
			}
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			hlen = qede_get_skb_hlen(skb, true);
		} else {
			first_bd->data.bd_flags.bitfields |=
				1 << ETH_TX_1ST_BD_FLAGS_IP_CSUM_SHIFT;
			hlen = qede_get_skb_hlen(skb, false);
		}
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		/* @@@TBD - if will not be removed need to check */
		third_bd->data.bitfields |=
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			cpu_to_le16((1 << ETH_TX_DATA_3RD_BD_HDR_NBD_SHIFT));
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		/* Make life easier for FW guys who can't deal with header and
		 * data on same BD. If we need to split, use the second bd...
		 */
		if (unlikely(skb_headlen(skb) > hlen)) {
			DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED,
				   "TSO split header size is %d (%x:%x)\n",
				   first_bd->nbytes, first_bd->addr.hi,
				   first_bd->addr.lo);

			mapping = HILO_U64(le32_to_cpu(first_bd->addr.hi),
					   le32_to_cpu(first_bd->addr.lo)) +
					   hlen;

			BD_SET_UNMAP_ADDR_LEN(tx_data_bd, mapping,
					      le16_to_cpu(first_bd->nbytes) -
					      hlen);

			/* this marks the BD as one that has no
			 * individual mapping
			 */
			txq->sw_tx_ring[idx].flags |= QEDE_TSO_SPLIT_BD;

			first_bd->nbytes = cpu_to_le16(hlen);

			tx_data_bd = (struct eth_tx_bd *)third_bd;
			data_split = true;
		}
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	} else {
		first_bd->data.bitfields |=
		    (skb->len & ETH_TX_DATA_1ST_BD_PKT_LEN_MASK) <<
		    ETH_TX_DATA_1ST_BD_PKT_LEN_SHIFT;
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	}

	/* Handle fragmented skb */
	/* special handle for frags inside 2nd and 3rd bds.. */
	while (tx_data_bd && frag_idx < skb_shinfo(skb)->nr_frags) {
		rc = map_frag_to_bd(edev,
				    &skb_shinfo(skb)->frags[frag_idx],
				    tx_data_bd);
		if (rc) {
			qede_free_failed_tx_pkt(edev, txq, first_bd, nbd,
						data_split);
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			qede_update_tx_producer(txq);
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			return NETDEV_TX_OK;
		}

		if (tx_data_bd == (struct eth_tx_bd *)second_bd)
			tx_data_bd = (struct eth_tx_bd *)third_bd;
		else
			tx_data_bd = NULL;

		frag_idx++;
	}

	/* map last frags into 4th, 5th .... */
	for (; frag_idx < skb_shinfo(skb)->nr_frags; frag_idx++, nbd++) {
		tx_data_bd = (struct eth_tx_bd *)
			     qed_chain_produce(&txq->tx_pbl);

		memset(tx_data_bd, 0, sizeof(*tx_data_bd));

		rc = map_frag_to_bd(edev,
				    &skb_shinfo(skb)->frags[frag_idx],
				    tx_data_bd);
		if (rc) {
			qede_free_failed_tx_pkt(edev, txq, first_bd, nbd,
						data_split);
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			qede_update_tx_producer(txq);
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			return NETDEV_TX_OK;
		}
	}

	/* update the first BD with the actual num BDs */
	first_bd->data.nbds = nbd;

	netdev_tx_sent_queue(netdev_txq, skb->len);

	skb_tx_timestamp(skb);

	/* Advance packet producer only before sending the packet since mapping
	 * of pages may fail.
	 */
	txq->sw_tx_prod++;

	/* 'next page' entries are counted in the producer value */
	txq->tx_db.data.bd_prod =
		cpu_to_le16(qed_chain_get_prod_idx(&txq->tx_pbl));

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	if (!skb->xmit_more || netif_xmit_stopped(netdev_txq))
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		qede_update_tx_producer(txq);
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	if (unlikely(qed_chain_get_elem_left(&txq->tx_pbl)
		      < (MAX_SKB_FRAGS + 1))) {
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		if (skb->xmit_more)
			qede_update_tx_producer(txq);

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		netif_tx_stop_queue(netdev_txq);
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		txq->stopped_cnt++;
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		DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED,
			   "Stop queue was called\n");
		/* paired memory barrier is in qede_tx_int(), we have to keep
		 * ordering of set_bit() in netif_tx_stop_queue() and read of
		 * fp->bd_tx_cons
		 */
		smp_mb();

		if (qed_chain_get_elem_left(&txq->tx_pbl)
		     >= (MAX_SKB_FRAGS + 1) &&
		    (edev->state == QEDE_STATE_OPEN)) {
			netif_tx_wake_queue(netdev_txq);
			DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED,
				   "Wake queue was called\n");
		}
	}

	return NETDEV_TX_OK;
}

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int qede_txq_has_work(struct qede_tx_queue *txq)
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{
	u16 hw_bd_cons;

	/* Tell compiler that consumer and producer can change */
	barrier();
	hw_bd_cons = le16_to_cpu(*txq->hw_cons_ptr);
	if (qed_chain_get_cons_idx(&txq->tx_pbl) == hw_bd_cons + 1)
		return 0;

	return hw_bd_cons != qed_chain_get_cons_idx(&txq->tx_pbl);
}

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static int qede_tx_int(struct qede_dev *edev, struct qede_tx_queue *txq)
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{
	struct netdev_queue *netdev_txq;
	u16 hw_bd_cons;
	unsigned int pkts_compl = 0, bytes_compl = 0;
	int rc;

	netdev_txq = netdev_get_tx_queue(edev->ndev, txq->index);

	hw_bd_cons = le16_to_cpu(*txq->hw_cons_ptr);
	barrier();

	while (hw_bd_cons != qed_chain_get_cons_idx(&txq->tx_pbl)) {
		int len = 0;

		rc = qede_free_tx_pkt(edev, txq, &len);
		if (rc) {
			DP_NOTICE(edev, "hw_bd_cons = %d, chain_cons=%d\n",
				  hw_bd_cons,
				  qed_chain_get_cons_idx(&txq->tx_pbl));
			break;
		}

		bytes_compl += len;
		pkts_compl++;
		txq->sw_tx_cons++;
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		txq->xmit_pkts++;
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	}

	netdev_tx_completed_queue(netdev_txq, pkts_compl, bytes_compl);

	/* Need to make the tx_bd_cons update visible to start_xmit()
	 * before checking for netif_tx_queue_stopped().  Without the
	 * memory barrier, there is a small possibility that
	 * start_xmit() will miss it and cause the queue to be stopped
	 * forever.
	 * On the other hand we need an rmb() here to ensure the proper
	 * ordering of bit testing in the following
	 * netif_tx_queue_stopped(txq) call.
	 */
	smp_mb();

	if (unlikely(netif_tx_queue_stopped(netdev_txq))) {
		/* Taking tx_lock is needed to prevent reenabling the queue
		 * while it's empty. This could have happen if rx_action() gets
		 * suspended in qede_tx_int() after the condition before
		 * netif_tx_wake_queue(), while tx_action (qede_start_xmit()):
		 *
		 * stops the queue->sees fresh tx_bd_cons->releases the queue->
		 * sends some packets consuming the whole queue again->
		 * stops the queue
		 */

		__netif_tx_lock(netdev_txq, smp_processor_id());

		if ((netif_tx_queue_stopped(netdev_txq)) &&
		    (edev->state == QEDE_STATE_OPEN) &&
		    (qed_chain_get_elem_left(&txq->tx_pbl)
		      >= (MAX_SKB_FRAGS + 1))) {
			netif_tx_wake_queue(netdev_txq);
			DP_VERBOSE(edev, NETIF_MSG_TX_DONE,
				   "Wake queue was called\n");
		}

		__netif_tx_unlock(netdev_txq);
	}

	return 0;
}

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bool qede_has_rx_work(struct qede_rx_queue *rxq)
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{
	u16 hw_comp_cons, sw_comp_cons;

	/* Tell compiler that status block fields can change */
	barrier();

	hw_comp_cons = le16_to_cpu(*rxq->hw_cons_ptr);
	sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring);

	return hw_comp_cons != sw_comp_cons;
}

static bool qede_has_tx_work(struct qede_fastpath *fp)
{
	u8 tc;

	for (tc = 0; tc < fp->edev->num_tc; tc++)
		if (qede_txq_has_work(&fp->txqs[tc]))
			return true;
	return false;
}

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static inline void qede_rx_bd_ring_consume(struct qede_rx_queue *rxq)
{
	qed_chain_consume(&rxq->rx_bd_ring);
	rxq->sw_rx_cons++;
}

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/* This function reuses the buffer(from an offset) from
 * consumer index to producer index in the bd ring
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 */
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static inline void qede_reuse_page(struct qede_dev *edev,
				   struct qede_rx_queue *rxq,
				   struct sw_rx_data *curr_cons)
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{
	struct eth_rx_bd *rx_bd_prod = qed_chain_produce(&rxq->rx_bd_ring);
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	struct sw_rx_data *curr_prod;
	dma_addr_t new_mapping;
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	curr_prod = &rxq->sw_rx_ring[rxq->sw_rx_prod & NUM_RX_BDS_MAX];
	*curr_prod = *curr_cons;
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	new_mapping = curr_prod->mapping + curr_prod->page_offset;

	rx_bd_prod->addr.hi = cpu_to_le32(upper_32_bits(new_mapping));
	rx_bd_prod->addr.lo = cpu_to_le32(lower_32_bits(new_mapping));
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	rxq->sw_rx_prod++;
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	curr_cons->data = NULL;
}

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/* In case of allocation failures reuse buffers
 * from consumer index to produce buffers for firmware
 */
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void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq,
			     struct qede_dev *edev, u8 count)
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{
	struct sw_rx_data *curr_cons;

	for (; count > 0; count--) {
		curr_cons = &rxq->sw_rx_ring[rxq->sw_rx_cons & NUM_RX_BDS_MAX];
		qede_reuse_page(edev, rxq, curr_cons);
		qede_rx_bd_ring_consume(rxq);
	}
}

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static inline int qede_realloc_rx_buffer(struct qede_dev *edev,
					 struct qede_rx_queue *rxq,
					 struct sw_rx_data *curr_cons)
{
	/* Move to the next segment in the page */
	curr_cons->page_offset += rxq->rx_buf_seg_size;

	if (curr_cons->page_offset == PAGE_SIZE) {
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		if (unlikely(qede_alloc_rx_buffer(edev, rxq))) {
			/* Since we failed to allocate new buffer
			 * current buffer can be used again.
			 */
			curr_cons->page_offset -= rxq->rx_buf_seg_size;

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			return -ENOMEM;
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		}
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		dma_unmap_page(&edev->pdev->dev, curr_cons->mapping,
			       PAGE_SIZE, DMA_FROM_DEVICE);
	} else {
		/* Increment refcount of the page as we don't want
		 * network stack to take the ownership of the page
		 * which can be recycled multiple times by the driver.
		 */
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		page_ref_inc(curr_cons->data);
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		qede_reuse_page(edev, rxq, curr_cons);
	}

	return 0;
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}

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void qede_update_rx_prod(struct qede_dev *edev, struct qede_rx_queue *rxq)
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{
	u16 bd_prod = qed_chain_get_prod_idx(&rxq->rx_bd_ring);
	u16 cqe_prod = qed_chain_get_prod_idx(&rxq->rx_comp_ring);
	struct eth_rx_prod_data rx_prods = {0};

	/* Update producers */
	rx_prods.bd_prod = cpu_to_le16(bd_prod);
	rx_prods.cqe_prod = cpu_to_le16(cqe_prod);

	/* Make sure that the BD and SGE data is updated before updating the
	 * producers since FW might read the BD/SGE right after the producer
	 * is updated.
	 */
	wmb();

	internal_ram_wr(rxq->hw_rxq_prod_addr, sizeof(rx_prods),
			(u32 *)&rx_prods);

	/* mmiowb is needed to synchronize doorbell writes from more than one
	 * processor. It guarantees that the write arrives to the device before
	 * the napi lock is released and another qede_poll is called (possibly
	 * on another CPU). Without this barrier, the next doorbell can bypass
	 * this doorbell. This is applicable to IA64/Altix systems.
	 */
	mmiowb();
}

static u32 qede_get_rxhash(struct qede_dev *edev,
			   u8 bitfields,
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			   __le32 rss_hash, enum pkt_hash_types *rxhash_type)
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{
	enum rss_hash_type htype;

	htype = GET_FIELD(bitfields, ETH_FAST_PATH_RX_REG_CQE_RSS_HASH_TYPE);

	if ((edev->ndev->features & NETIF_F_RXHASH) && htype) {
		*rxhash_type = ((htype == RSS_HASH_TYPE_IPV4) ||
				(htype == RSS_HASH_TYPE_IPV6)) ?
				PKT_HASH_TYPE_L3 : PKT_HASH_TYPE_L4;
		return le32_to_cpu(rss_hash);
	}
	*rxhash_type = PKT_HASH_TYPE_NONE;
	return 0;
}

static void qede_set_skb_csum(struct sk_buff *skb, u8 csum_flag)
{
	skb_checksum_none_assert(skb);

	if (csum_flag & QEDE_CSUM_UNNECESSARY)
		skb->ip_summed = CHECKSUM_UNNECESSARY;
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	if (csum_flag & QEDE_TUNN_CSUM_UNNECESSARY)
		skb->csum_level = 1;
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}

static inline void qede_skb_receive(struct qede_dev *edev,
				    struct qede_fastpath *fp,
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				    struct sk_buff *skb, u16 vlan_tag)
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{
	if (vlan_tag)
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		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
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	napi_gro_receive(&fp->napi, skb);
}

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static void qede_set_gro_params(struct qede_dev *edev,
				struct sk_buff *skb,
				struct eth_fast_path_rx_tpa_start_cqe *cqe)
{
	u16 parsing_flags = le16_to_cpu(cqe->pars_flags.flags);

	if (((parsing_flags >> PARSING_AND_ERR_FLAGS_L3TYPE_SHIFT) &
	    PARSING_AND_ERR_FLAGS_L3TYPE_MASK) == 2)
		skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
	else
		skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;

	skb_shinfo(skb)->gso_size = __le16_to_cpu(cqe->len_on_first_bd) -
					cqe->header_len;
}

static int qede_fill_frag_skb(struct qede_dev *edev,
			      struct qede_rx_queue *rxq,
Y
Yuval Mintz 已提交
1054
			      u8 tpa_agg_index, u16 len_on_bd)
1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069
{
	struct sw_rx_data *current_bd = &rxq->sw_rx_ring[rxq->sw_rx_cons &
							 NUM_RX_BDS_MAX];
	struct qede_agg_info *tpa_info = &rxq->tpa_info[tpa_agg_index];
	struct sk_buff *skb = tpa_info->skb;

	if (unlikely(tpa_info->agg_state != QEDE_AGG_STATE_START))
		goto out;

	/* Add one frag and update the appropriate fields in the skb */
	skb_fill_page_desc(skb, tpa_info->frag_id++,
			   current_bd->data, current_bd->page_offset,
			   len_on_bd);

	if (unlikely(qede_realloc_rx_buffer(edev, rxq, current_bd))) {
1070 1071 1072
		/* Incr page ref count to reuse on allocation failure
		 * so that it doesn't get freed while freeing SKB.
		 */
1073
		page_ref_inc(current_bd->data);
1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086
		goto out;
	}

	qed_chain_consume(&rxq->rx_bd_ring);
	rxq->sw_rx_cons++;

	skb->data_len += len_on_bd;
	skb->truesize += rxq->rx_buf_seg_size;
	skb->len += len_on_bd;

	return 0;

out:
1087 1088
	tpa_info->agg_state = QEDE_AGG_STATE_ERROR;
	qede_recycle_rx_bd_ring(rxq, edev, 1);
1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112
	return -ENOMEM;
}

static void qede_tpa_start(struct qede_dev *edev,
			   struct qede_rx_queue *rxq,
			   struct eth_fast_path_rx_tpa_start_cqe *cqe)
{
	struct qede_agg_info *tpa_info = &rxq->tpa_info[cqe->tpa_agg_index];
	struct eth_rx_bd *rx_bd_cons = qed_chain_consume(&rxq->rx_bd_ring);
	struct eth_rx_bd *rx_bd_prod = qed_chain_produce(&rxq->rx_bd_ring);
	struct sw_rx_data *replace_buf = &tpa_info->replace_buf;
	dma_addr_t mapping = tpa_info->replace_buf_mapping;
	struct sw_rx_data *sw_rx_data_cons;
	struct sw_rx_data *sw_rx_data_prod;
	enum pkt_hash_types rxhash_type;
	u32 rxhash;

	sw_rx_data_cons = &rxq->sw_rx_ring[rxq->sw_rx_cons & NUM_RX_BDS_MAX];
	sw_rx_data_prod = &rxq->sw_rx_ring[rxq->sw_rx_prod & NUM_RX_BDS_MAX];

	/* Use pre-allocated replacement buffer - we can't release the agg.
	 * start until its over and we don't want to risk allocation failing
	 * here, so re-allocate when aggregation will be over.
	 */
M
Manish Chopra 已提交
1113
	sw_rx_data_prod->mapping = replace_buf->mapping;
1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138

	sw_rx_data_prod->data = replace_buf->data;
	rx_bd_prod->addr.hi = cpu_to_le32(upper_32_bits(mapping));
	rx_bd_prod->addr.lo = cpu_to_le32(lower_32_bits(mapping));
	sw_rx_data_prod->page_offset = replace_buf->page_offset;

	rxq->sw_rx_prod++;

	/* move partial skb from cons to pool (don't unmap yet)
	 * save mapping, incase we drop the packet later on.
	 */
	tpa_info->start_buf = *sw_rx_data_cons;
	mapping = HILO_U64(le32_to_cpu(rx_bd_cons->addr.hi),
			   le32_to_cpu(rx_bd_cons->addr.lo));

	tpa_info->start_buf_mapping = mapping;
	rxq->sw_rx_cons++;

	/* set tpa state to start only if we are able to allocate skb
	 * for this aggregation, otherwise mark as error and aggregation will
	 * be dropped
	 */
	tpa_info->skb = netdev_alloc_skb(edev->ndev,
					 le16_to_cpu(cqe->len_on_first_bd));
	if (unlikely(!tpa_info->skb)) {
1139
		DP_NOTICE(edev, "Failed to allocate SKB for gro\n");
1140
		tpa_info->agg_state = QEDE_AGG_STATE_ERROR;
1141
		goto cons_buf;
1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163
	}

	skb_put(tpa_info->skb, le16_to_cpu(cqe->len_on_first_bd));
	memcpy(&tpa_info->start_cqe, cqe, sizeof(tpa_info->start_cqe));

	/* Start filling in the aggregation info */
	tpa_info->frag_id = 0;
	tpa_info->agg_state = QEDE_AGG_STATE_START;

	rxhash = qede_get_rxhash(edev, cqe->bitfields,
				 cqe->rss_hash, &rxhash_type);
	skb_set_hash(tpa_info->skb, rxhash, rxhash_type);
	if ((le16_to_cpu(cqe->pars_flags.flags) >>
	     PARSING_AND_ERR_FLAGS_TAG8021QEXIST_SHIFT) &
		    PARSING_AND_ERR_FLAGS_TAG8021QEXIST_MASK)
		tpa_info->vlan_tag = le16_to_cpu(cqe->vlan_tag);
	else
		tpa_info->vlan_tag = 0;

	/* This is needed in order to enable forwarding support */
	qede_set_gro_params(edev, tpa_info->skb, cqe);

1164
cons_buf: /* We still need to handle bd_len_list to consume buffers */
1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175
	if (likely(cqe->ext_bd_len_list[0]))
		qede_fill_frag_skb(edev, rxq, cqe->tpa_agg_index,
				   le16_to_cpu(cqe->ext_bd_len_list[0]));

	if (unlikely(cqe->ext_bd_len_list[1])) {
		DP_ERR(edev,
		       "Unlikely - got a TPA aggregation with more than one ext_bd_len_list entry in the TPA start\n");
		tpa_info->agg_state = QEDE_AGG_STATE_ERROR;
	}
}

1176
#ifdef CONFIG_INET
1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202
static void qede_gro_ip_csum(struct sk_buff *skb)
{
	const struct iphdr *iph = ip_hdr(skb);
	struct tcphdr *th;

	skb_set_transport_header(skb, sizeof(struct iphdr));
	th = tcp_hdr(skb);

	th->check = ~tcp_v4_check(skb->len - skb_transport_offset(skb),
				  iph->saddr, iph->daddr, 0);

	tcp_gro_complete(skb);
}

static void qede_gro_ipv6_csum(struct sk_buff *skb)
{
	struct ipv6hdr *iph = ipv6_hdr(skb);
	struct tcphdr *th;

	skb_set_transport_header(skb, sizeof(struct ipv6hdr));
	th = tcp_hdr(skb);

	th->check = ~tcp_v6_check(skb->len - skb_transport_offset(skb),
				  &iph->saddr, &iph->daddr, 0);
	tcp_gro_complete(skb);
}
1203
#endif
1204 1205 1206 1207 1208 1209

static void qede_gro_receive(struct qede_dev *edev,
			     struct qede_fastpath *fp,
			     struct sk_buff *skb,
			     u16 vlan_tag)
{
1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220
	/* FW can send a single MTU sized packet from gro flow
	 * due to aggregation timeout/last segment etc. which
	 * is not expected to be a gro packet. If a skb has zero
	 * frags then simply push it in the stack as non gso skb.
	 */
	if (unlikely(!skb->data_len)) {
		skb_shinfo(skb)->gso_type = 0;
		skb_shinfo(skb)->gso_size = 0;
		goto send_skb;
	}

1221
#ifdef CONFIG_INET
1222
	if (skb_shinfo(skb)->gso_size) {
1223 1224
		skb_set_network_header(skb, 0);

1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237
		switch (skb->protocol) {
		case htons(ETH_P_IP):
			qede_gro_ip_csum(skb);
			break;
		case htons(ETH_P_IPV6):
			qede_gro_ipv6_csum(skb);
			break;
		default:
			DP_ERR(edev,
			       "Error: FW GRO supports only IPv4/IPv6, not 0x%04x\n",
			       ntohs(skb->protocol));
		}
	}
1238
#endif
1239 1240

send_skb:
1241
	skb_record_rx_queue(skb, fp->rxq->rxq_id);
1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328
	qede_skb_receive(edev, fp, skb, vlan_tag);
}

static inline void qede_tpa_cont(struct qede_dev *edev,
				 struct qede_rx_queue *rxq,
				 struct eth_fast_path_rx_tpa_cont_cqe *cqe)
{
	int i;

	for (i = 0; cqe->len_list[i]; i++)
		qede_fill_frag_skb(edev, rxq, cqe->tpa_agg_index,
				   le16_to_cpu(cqe->len_list[i]));

	if (unlikely(i > 1))
		DP_ERR(edev,
		       "Strange - TPA cont with more than a single len_list entry\n");
}

static void qede_tpa_end(struct qede_dev *edev,
			 struct qede_fastpath *fp,
			 struct eth_fast_path_rx_tpa_end_cqe *cqe)
{
	struct qede_rx_queue *rxq = fp->rxq;
	struct qede_agg_info *tpa_info;
	struct sk_buff *skb;
	int i;

	tpa_info = &rxq->tpa_info[cqe->tpa_agg_index];
	skb = tpa_info->skb;

	for (i = 0; cqe->len_list[i]; i++)
		qede_fill_frag_skb(edev, rxq, cqe->tpa_agg_index,
				   le16_to_cpu(cqe->len_list[i]));
	if (unlikely(i > 1))
		DP_ERR(edev,
		       "Strange - TPA emd with more than a single len_list entry\n");

	if (unlikely(tpa_info->agg_state != QEDE_AGG_STATE_START))
		goto err;

	/* Sanity */
	if (unlikely(cqe->num_of_bds != tpa_info->frag_id + 1))
		DP_ERR(edev,
		       "Strange - TPA had %02x BDs, but SKB has only %d frags\n",
		       cqe->num_of_bds, tpa_info->frag_id);
	if (unlikely(skb->len != le16_to_cpu(cqe->total_packet_len)))
		DP_ERR(edev,
		       "Strange - total packet len [cqe] is %4x but SKB has len %04x\n",
		       le16_to_cpu(cqe->total_packet_len), skb->len);

	memcpy(skb->data,
	       page_address(tpa_info->start_buf.data) +
		tpa_info->start_cqe.placement_offset +
		tpa_info->start_buf.page_offset,
	       le16_to_cpu(tpa_info->start_cqe.len_on_first_bd));

	/* Recycle [mapped] start buffer for the next replacement */
	tpa_info->replace_buf = tpa_info->start_buf;
	tpa_info->replace_buf_mapping = tpa_info->start_buf_mapping;

	/* Finalize the SKB */
	skb->protocol = eth_type_trans(skb, edev->ndev);
	skb->ip_summed = CHECKSUM_UNNECESSARY;

	/* tcp_gro_complete() will copy NAPI_GRO_CB(skb)->count
	 * to skb_shinfo(skb)->gso_segs
	 */
	NAPI_GRO_CB(skb)->count = le16_to_cpu(cqe->num_of_coalesced_segs);

	qede_gro_receive(edev, fp, skb, tpa_info->vlan_tag);

	tpa_info->agg_state = QEDE_AGG_STATE_NONE;

	return;
err:
	/* The BD starting the aggregation is still mapped; Re-use it for
	 * future aggregations [as replacement buffer]
	 */
	memcpy(&tpa_info->replace_buf, &tpa_info->start_buf,
	       sizeof(struct sw_rx_data));
	tpa_info->replace_buf_mapping = tpa_info->start_buf_mapping;
	tpa_info->start_buf.data = NULL;
	tpa_info->agg_state = QEDE_AGG_STATE_NONE;
	dev_kfree_skb_any(tpa_info->skb);
	tpa_info->skb = NULL;
}

1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363
static bool qede_tunn_exist(u16 flag)
{
	return !!(flag & (PARSING_AND_ERR_FLAGS_TUNNELEXIST_MASK <<
			  PARSING_AND_ERR_FLAGS_TUNNELEXIST_SHIFT));
}

static u8 qede_check_tunn_csum(u16 flag)
{
	u16 csum_flag = 0;
	u8 tcsum = 0;

	if (flag & (PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMWASCALCULATED_MASK <<
		    PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMWASCALCULATED_SHIFT))
		csum_flag |= PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMERROR_MASK <<
			     PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMERROR_SHIFT;

	if (flag & (PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_MASK <<
		    PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_SHIFT)) {
		csum_flag |= PARSING_AND_ERR_FLAGS_L4CHKSMERROR_MASK <<
			     PARSING_AND_ERR_FLAGS_L4CHKSMERROR_SHIFT;
		tcsum = QEDE_TUNN_CSUM_UNNECESSARY;
	}

	csum_flag |= PARSING_AND_ERR_FLAGS_TUNNELIPHDRERROR_MASK <<
		     PARSING_AND_ERR_FLAGS_TUNNELIPHDRERROR_SHIFT |
		     PARSING_AND_ERR_FLAGS_IPHDRERROR_MASK <<
		     PARSING_AND_ERR_FLAGS_IPHDRERROR_SHIFT;

	if (csum_flag & flag)
		return QEDE_CSUM_ERROR;

	return QEDE_CSUM_UNNECESSARY | tcsum;
}

static u8 qede_check_notunn_csum(u16 flag)
1364 1365 1366 1367
{
	u16 csum_flag = 0;
	u8 csum = 0;

1368 1369
	if (flag & (PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_MASK <<
		    PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_SHIFT)) {
1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383
		csum_flag |= PARSING_AND_ERR_FLAGS_L4CHKSMERROR_MASK <<
			     PARSING_AND_ERR_FLAGS_L4CHKSMERROR_SHIFT;
		csum = QEDE_CSUM_UNNECESSARY;
	}

	csum_flag |= PARSING_AND_ERR_FLAGS_IPHDRERROR_MASK <<
		     PARSING_AND_ERR_FLAGS_IPHDRERROR_SHIFT;

	if (csum_flag & flag)
		return QEDE_CSUM_ERROR;

	return csum;
}

1384 1385 1386 1387 1388 1389 1390 1391
static u8 qede_check_csum(u16 flag)
{
	if (!qede_tunn_exist(flag))
		return qede_check_notunn_csum(flag);
	else
		return qede_check_tunn_csum(flag);
}

1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405
static bool qede_pkt_is_ip_fragmented(struct eth_fast_path_rx_reg_cqe *cqe,
				      u16 flag)
{
	u8 tun_pars_flg = cqe->tunnel_pars_flags.flags;

	if ((tun_pars_flg & (ETH_TUNNEL_PARSING_FLAGS_IPV4_FRAGMENT_MASK <<
			     ETH_TUNNEL_PARSING_FLAGS_IPV4_FRAGMENT_SHIFT)) ||
	    (flag & (PARSING_AND_ERR_FLAGS_IPV4FRAG_MASK <<
		     PARSING_AND_ERR_FLAGS_IPV4FRAG_SHIFT)))
		return true;

	return false;
}

1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432
static int qede_rx_int(struct qede_fastpath *fp, int budget)
{
	struct qede_dev *edev = fp->edev;
	struct qede_rx_queue *rxq = fp->rxq;

	u16 hw_comp_cons, sw_comp_cons, sw_rx_index, parse_flag;
	int rx_pkt = 0;
	u8 csum_flag;

	hw_comp_cons = le16_to_cpu(*rxq->hw_cons_ptr);
	sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring);

	/* Memory barrier to prevent the CPU from doing speculative reads of CQE
	 * / BD in the while-loop before reading hw_comp_cons. If the CQE is
	 * read before it is written by FW, then FW writes CQE and SB, and then
	 * the CPU reads the hw_comp_cons, it will use an old CQE.
	 */
	rmb();

	/* Loop to complete all indicated BDs */
	while (sw_comp_cons != hw_comp_cons) {
		struct eth_fast_path_rx_reg_cqe *fp_cqe;
		enum pkt_hash_types rxhash_type;
		enum eth_rx_cqe_type cqe_type;
		struct sw_rx_data *sw_rx_data;
		union eth_rx_cqe *cqe;
		struct sk_buff *skb;
Y
Yuval Mintz 已提交
1433 1434
		struct page *data;
		__le16 flags;
1435 1436 1437 1438 1439 1440 1441 1442 1443 1444
		u16 len, pad;
		u32 rx_hash;

		/* Get the CQE from the completion ring */
		cqe = (union eth_rx_cqe *)
			qed_chain_consume(&rxq->rx_comp_ring);
		cqe_type = cqe->fast_path_regular.type;

		if (unlikely(cqe_type == ETH_RX_CQE_TYPE_SLOW_PATH)) {
			edev->ops->eth_cqe_completion(
1445
					edev->cdev, fp->id,
1446 1447 1448 1449
					(struct eth_slow_path_rx_cqe *)cqe);
			goto next_cqe;
		}

1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468
		if (cqe_type != ETH_RX_CQE_TYPE_REGULAR) {
			switch (cqe_type) {
			case ETH_RX_CQE_TYPE_TPA_START:
				qede_tpa_start(edev, rxq,
					       &cqe->fast_path_tpa_start);
				goto next_cqe;
			case ETH_RX_CQE_TYPE_TPA_CONT:
				qede_tpa_cont(edev, rxq,
					      &cqe->fast_path_tpa_cont);
				goto next_cqe;
			case ETH_RX_CQE_TYPE_TPA_END:
				qede_tpa_end(edev, fp,
					     &cqe->fast_path_tpa_end);
				goto next_rx_only;
			default:
				break;
			}
		}

1469 1470 1471 1472 1473 1474
		/* Get the data from the SW ring */
		sw_rx_index = rxq->sw_rx_cons & NUM_RX_BDS_MAX;
		sw_rx_data = &rxq->sw_rx_ring[sw_rx_index];
		data = sw_rx_data->data;

		fp_cqe = &cqe->fast_path_regular;
Y
Yuval Mintz 已提交
1475
		len =  le16_to_cpu(fp_cqe->len_on_first_bd);
1476
		pad = fp_cqe->placement_offset;
Y
Yuval Mintz 已提交
1477
		flags = cqe->fast_path_regular.pars_flags.flags;
1478

Y
Yuval Mintz 已提交
1479 1480
		/* If this is an error packet then drop it */
		parse_flag = le16_to_cpu(flags);
1481

Y
Yuval Mintz 已提交
1482 1483
		csum_flag = qede_check_csum(parse_flag);
		if (unlikely(csum_flag == QEDE_CSUM_ERROR)) {
1484 1485 1486 1487 1488 1489
			if (qede_pkt_is_ip_fragmented(&cqe->fast_path_regular,
						      parse_flag)) {
				rxq->rx_ip_frags++;
				goto alloc_skb;
			}

Y
Yuval Mintz 已提交
1490 1491 1492 1493
			DP_NOTICE(edev,
				  "CQE in CONS = %u has error, flags = %x, dropping incoming packet\n",
				  sw_comp_cons, parse_flag);
			rxq->rx_hw_errors++;
1494 1495
			qede_recycle_rx_bd_ring(rxq, edev, fp_cqe->bd_num);
			goto next_cqe;
Y
Yuval Mintz 已提交
1496
		}
1497

1498
alloc_skb:
Y
Yuval Mintz 已提交
1499 1500
		skb = netdev_alloc_skb(edev->ndev, QEDE_RX_HDR_SIZE);
		if (unlikely(!skb)) {
1501
			DP_NOTICE(edev,
Y
Yuval Mintz 已提交
1502
				  "skb allocation failed, dropping incoming packet\n");
1503
			qede_recycle_rx_bd_ring(rxq, edev, fp_cqe->bd_num);
1504
			rxq->rx_alloc_errors++;
1505
			goto next_cqe;
Y
Yuval Mintz 已提交
1506 1507 1508
		}

		/* Copy data into SKB */
1509
		if (len + pad <= edev->rx_copybreak) {
Y
Yuval Mintz 已提交
1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538
			memcpy(skb_put(skb, len),
			       page_address(data) + pad +
				sw_rx_data->page_offset, len);
			qede_reuse_page(edev, rxq, sw_rx_data);
		} else {
			struct skb_frag_struct *frag;
			unsigned int pull_len;
			unsigned char *va;

			frag = &skb_shinfo(skb)->frags[0];

			skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, data,
					pad + sw_rx_data->page_offset,
					len, rxq->rx_buf_seg_size);

			va = skb_frag_address(frag);
			pull_len = eth_get_headlen(va, QEDE_RX_HDR_SIZE);

			/* Align the pull_len to optimize memcpy */
			memcpy(skb->data, va, ALIGN(pull_len, sizeof(long)));

			skb_frag_size_sub(frag, pull_len);
			frag->page_offset += pull_len;
			skb->data_len -= pull_len;
			skb->tail += pull_len;

			if (unlikely(qede_realloc_rx_buffer(edev, rxq,
							    sw_rx_data))) {
				DP_ERR(edev, "Failed to allocate rx buffer\n");
1539 1540 1541 1542 1543
				/* Incr page ref count to reuse on allocation
				 * failure so that it doesn't get freed while
				 * freeing SKB.
				 */

1544
				page_ref_inc(sw_rx_data->data);
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				rxq->rx_alloc_errors++;
1546 1547 1548
				qede_recycle_rx_bd_ring(rxq, edev,
							fp_cqe->bd_num);
				dev_kfree_skb_any(skb);
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				goto next_cqe;
			}
1551 1552
		}

1553 1554
		qede_rx_bd_ring_consume(rxq);

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		if (fp_cqe->bd_num != 1) {
			u16 pkt_len = le16_to_cpu(fp_cqe->pkt_len);
			u8 num_frags;

			pkt_len -= len;

			for (num_frags = fp_cqe->bd_num - 1; num_frags > 0;
			     num_frags--) {
				u16 cur_size = pkt_len > rxq->rx_buf_size ?
						rxq->rx_buf_size : pkt_len;
1565 1566 1567 1568 1569 1570 1571 1572 1573
				if (unlikely(!cur_size)) {
					DP_ERR(edev,
					       "Still got %d BDs for mapping jumbo, but length became 0\n",
					       num_frags);
					qede_recycle_rx_bd_ring(rxq, edev,
								num_frags);
					dev_kfree_skb_any(skb);
					goto next_cqe;
				}
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1575 1576 1577 1578
				if (unlikely(qede_alloc_rx_buffer(edev, rxq))) {
					qede_recycle_rx_bd_ring(rxq, edev,
								num_frags);
					dev_kfree_skb_any(skb);
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					goto next_cqe;
1580
				}
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				sw_rx_index = rxq->sw_rx_cons & NUM_RX_BDS_MAX;
				sw_rx_data = &rxq->sw_rx_ring[sw_rx_index];
1584 1585
				qede_rx_bd_ring_consume(rxq);

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				dma_unmap_page(&edev->pdev->dev,
					       sw_rx_data->mapping,
					       PAGE_SIZE, DMA_FROM_DEVICE);

				skb_fill_page_desc(skb,
						   skb_shinfo(skb)->nr_frags++,
						   sw_rx_data->data, 0,
						   cur_size);

				skb->truesize += PAGE_SIZE;
				skb->data_len += cur_size;
				skb->len += cur_size;
				pkt_len -= cur_size;
			}
1600

1601
			if (unlikely(pkt_len))
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				DP_ERR(edev,
				       "Mapped all BDs of jumbo, but still have %d bytes\n",
				       pkt_len);
		}
1606 1607 1608 1609

		skb->protocol = eth_type_trans(skb, edev->ndev);

		rx_hash = qede_get_rxhash(edev, fp_cqe->bitfields,
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					  fp_cqe->rss_hash, &rxhash_type);
1611 1612 1613 1614 1615

		skb_set_hash(skb, rx_hash, rxhash_type);

		qede_set_skb_csum(skb, csum_flag);

1616
		skb_record_rx_queue(skb, fp->rxq->rxq_id);
1617 1618

		qede_skb_receive(edev, fp, skb, le16_to_cpu(fp_cqe->vlan_tag));
1619
next_rx_only:
1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634
		rx_pkt++;

next_cqe: /* don't consume bd rx buffer */
		qed_chain_recycle_consumed(&rxq->rx_comp_ring);
		sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring);
		/* CR TPA - revisit how to handle budget in TPA perhaps
		 * increase on "end"
		 */
		if (rx_pkt == budget)
			break;
	} /* repeat while sw_comp_cons != hw_comp_cons... */

	/* Update producers */
	qede_update_rx_prod(edev, rxq);

1635 1636
	rxq->rcv_pkts += rx_pkt;

1637 1638 1639 1640 1641 1642
	return rx_pkt;
}

static int qede_poll(struct napi_struct *napi, int budget)
{
	struct qede_fastpath *fp = container_of(napi, struct qede_fastpath,
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Manish Chopra 已提交
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						napi);
1644
	struct qede_dev *edev = fp->edev;
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	int rx_work_done = 0;
	u8 tc;
1647

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	for (tc = 0; tc < edev->num_tc; tc++)
1649 1650
		if (likely(fp->type & QEDE_FASTPATH_TX) &&
		    qede_txq_has_work(&fp->txqs[tc]))
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			qede_tx_int(edev, &fp->txqs[tc]);

1653 1654
	rx_work_done = (likely(fp->type & QEDE_FASTPATH_RX) &&
			qede_has_rx_work(fp->rxq)) ?
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			qede_rx_int(fp, budget) : 0;
	if (rx_work_done < budget) {
		qed_sb_update_sb_idx(fp->sb_info);
		/* *_has_*_work() reads the status block,
		 * thus we need to ensure that status block indices
		 * have been actually read (qed_sb_update_sb_idx)
		 * prior to this check (*_has_*_work) so that
		 * we won't write the "newer" value of the status block
		 * to HW (if there was a DMA right after
		 * qede_has_rx_work and if there is no rmb, the memory
		 * reading (qed_sb_update_sb_idx) may be postponed
		 * to right before *_ack_sb). In this case there
		 * will never be another interrupt until there is
		 * another update of the status block, while there
		 * is still unhandled work.
		 */
		rmb();
1672 1673

		/* Fall out from the NAPI loop if needed */
1674 1675 1676 1677
		if (!((likely(fp->type & QEDE_FASTPATH_RX) &&
		       qede_has_rx_work(fp->rxq)) ||
		      (likely(fp->type & QEDE_FASTPATH_TX) &&
		       qede_has_tx_work(fp)))) {
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			napi_complete(napi);

			/* Update and reenable interrupts */
			qed_sb_ack(fp->sb_info, IGU_INT_ENABLE,
				   1 /*update*/);
		} else {
			rx_work_done = budget;
1685 1686 1687
		}
	}

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	return rx_work_done;
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}

static irqreturn_t qede_msix_fp_int(int irq, void *fp_cookie)
{
	struct qede_fastpath *fp = fp_cookie;

	qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);

	napi_schedule_irqoff(&fp->napi);
	return IRQ_HANDLED;
}

/* -------------------------------------------------------------------------
 * END OF FAST-PATH
 * -------------------------------------------------------------------------
 */

static int qede_open(struct net_device *ndev);
static int qede_close(struct net_device *ndev);
1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726
static int qede_set_mac_addr(struct net_device *ndev, void *p);
static void qede_set_rx_mode(struct net_device *ndev);
static void qede_config_rx_mode(struct net_device *ndev);

static int qede_set_ucast_rx_mac(struct qede_dev *edev,
				 enum qed_filter_xcast_params_type opcode,
				 unsigned char mac[ETH_ALEN])
{
	struct qed_filter_params filter_cmd;

	memset(&filter_cmd, 0, sizeof(filter_cmd));
	filter_cmd.type = QED_FILTER_TYPE_UCAST;
	filter_cmd.filter.ucast.type = opcode;
	filter_cmd.filter.ucast.mac_valid = 1;
	ether_addr_copy(filter_cmd.filter.ucast.mac, mac);

	return edev->ops->filter_config(edev->cdev, &filter_cmd);
}

1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741
static int qede_set_ucast_rx_vlan(struct qede_dev *edev,
				  enum qed_filter_xcast_params_type opcode,
				  u16 vid)
{
	struct qed_filter_params filter_cmd;

	memset(&filter_cmd, 0, sizeof(filter_cmd));
	filter_cmd.type = QED_FILTER_TYPE_UCAST;
	filter_cmd.filter.ucast.type = opcode;
	filter_cmd.filter.ucast.vlan_valid = 1;
	filter_cmd.filter.ucast.vlan = vid;

	return edev->ops->filter_config(edev->cdev, &filter_cmd);
}

1742 1743 1744 1745 1746 1747
void qede_fill_by_demand_stats(struct qede_dev *edev)
{
	struct qed_eth_stats stats;

	edev->ops->get_vport_stats(edev->cdev, &stats);
	edev->stats.no_buff_discards = stats.no_buff_discards;
1748 1749
	edev->stats.packet_too_big_discard = stats.packet_too_big_discard;
	edev->stats.ttl0_discard = stats.ttl0_discard;
1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772
	edev->stats.rx_ucast_bytes = stats.rx_ucast_bytes;
	edev->stats.rx_mcast_bytes = stats.rx_mcast_bytes;
	edev->stats.rx_bcast_bytes = stats.rx_bcast_bytes;
	edev->stats.rx_ucast_pkts = stats.rx_ucast_pkts;
	edev->stats.rx_mcast_pkts = stats.rx_mcast_pkts;
	edev->stats.rx_bcast_pkts = stats.rx_bcast_pkts;
	edev->stats.mftag_filter_discards = stats.mftag_filter_discards;
	edev->stats.mac_filter_discards = stats.mac_filter_discards;

	edev->stats.tx_ucast_bytes = stats.tx_ucast_bytes;
	edev->stats.tx_mcast_bytes = stats.tx_mcast_bytes;
	edev->stats.tx_bcast_bytes = stats.tx_bcast_bytes;
	edev->stats.tx_ucast_pkts = stats.tx_ucast_pkts;
	edev->stats.tx_mcast_pkts = stats.tx_mcast_pkts;
	edev->stats.tx_bcast_pkts = stats.tx_bcast_pkts;
	edev->stats.tx_err_drop_pkts = stats.tx_err_drop_pkts;
	edev->stats.coalesced_pkts = stats.tpa_coalesced_pkts;
	edev->stats.coalesced_events = stats.tpa_coalesced_events;
	edev->stats.coalesced_aborts_num = stats.tpa_aborts_num;
	edev->stats.non_coalesced_pkts = stats.tpa_not_coalesced_pkts;
	edev->stats.coalesced_bytes = stats.tpa_coalesced_bytes;

	edev->stats.rx_64_byte_packets = stats.rx_64_byte_packets;
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	edev->stats.rx_65_to_127_byte_packets = stats.rx_65_to_127_byte_packets;
	edev->stats.rx_128_to_255_byte_packets =
				stats.rx_128_to_255_byte_packets;
	edev->stats.rx_256_to_511_byte_packets =
				stats.rx_256_to_511_byte_packets;
	edev->stats.rx_512_to_1023_byte_packets =
				stats.rx_512_to_1023_byte_packets;
	edev->stats.rx_1024_to_1518_byte_packets =
				stats.rx_1024_to_1518_byte_packets;
	edev->stats.rx_1519_to_1522_byte_packets =
				stats.rx_1519_to_1522_byte_packets;
	edev->stats.rx_1519_to_2047_byte_packets =
				stats.rx_1519_to_2047_byte_packets;
	edev->stats.rx_2048_to_4095_byte_packets =
				stats.rx_2048_to_4095_byte_packets;
	edev->stats.rx_4096_to_9216_byte_packets =
				stats.rx_4096_to_9216_byte_packets;
	edev->stats.rx_9217_to_16383_byte_packets =
				stats.rx_9217_to_16383_byte_packets;
1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828
	edev->stats.rx_crc_errors = stats.rx_crc_errors;
	edev->stats.rx_mac_crtl_frames = stats.rx_mac_crtl_frames;
	edev->stats.rx_pause_frames = stats.rx_pause_frames;
	edev->stats.rx_pfc_frames = stats.rx_pfc_frames;
	edev->stats.rx_align_errors = stats.rx_align_errors;
	edev->stats.rx_carrier_errors = stats.rx_carrier_errors;
	edev->stats.rx_oversize_packets = stats.rx_oversize_packets;
	edev->stats.rx_jabbers = stats.rx_jabbers;
	edev->stats.rx_undersize_packets = stats.rx_undersize_packets;
	edev->stats.rx_fragments = stats.rx_fragments;
	edev->stats.tx_64_byte_packets = stats.tx_64_byte_packets;
	edev->stats.tx_65_to_127_byte_packets = stats.tx_65_to_127_byte_packets;
	edev->stats.tx_128_to_255_byte_packets =
				stats.tx_128_to_255_byte_packets;
	edev->stats.tx_256_to_511_byte_packets =
				stats.tx_256_to_511_byte_packets;
	edev->stats.tx_512_to_1023_byte_packets =
				stats.tx_512_to_1023_byte_packets;
	edev->stats.tx_1024_to_1518_byte_packets =
				stats.tx_1024_to_1518_byte_packets;
	edev->stats.tx_1519_to_2047_byte_packets =
				stats.tx_1519_to_2047_byte_packets;
	edev->stats.tx_2048_to_4095_byte_packets =
				stats.tx_2048_to_4095_byte_packets;
	edev->stats.tx_4096_to_9216_byte_packets =
				stats.tx_4096_to_9216_byte_packets;
	edev->stats.tx_9217_to_16383_byte_packets =
				stats.tx_9217_to_16383_byte_packets;
	edev->stats.tx_pause_frames = stats.tx_pause_frames;
	edev->stats.tx_pfc_frames = stats.tx_pfc_frames;
	edev->stats.tx_lpi_entry_count = stats.tx_lpi_entry_count;
	edev->stats.tx_total_collisions = stats.tx_total_collisions;
	edev->stats.brb_truncates = stats.brb_truncates;
	edev->stats.brb_discards = stats.brb_discards;
	edev->stats.tx_mac_ctrl_frames = stats.tx_mac_ctrl_frames;
}

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Yuval Mintz 已提交
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static
struct rtnl_link_stats64 *qede_get_stats64(struct net_device *dev,
					   struct rtnl_link_stats64 *stats)
1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864
{
	struct qede_dev *edev = netdev_priv(dev);

	qede_fill_by_demand_stats(edev);

	stats->rx_packets = edev->stats.rx_ucast_pkts +
			    edev->stats.rx_mcast_pkts +
			    edev->stats.rx_bcast_pkts;
	stats->tx_packets = edev->stats.tx_ucast_pkts +
			    edev->stats.tx_mcast_pkts +
			    edev->stats.tx_bcast_pkts;

	stats->rx_bytes = edev->stats.rx_ucast_bytes +
			  edev->stats.rx_mcast_bytes +
			  edev->stats.rx_bcast_bytes;

	stats->tx_bytes = edev->stats.tx_ucast_bytes +
			  edev->stats.tx_mcast_bytes +
			  edev->stats.tx_bcast_bytes;

	stats->tx_errors = edev->stats.tx_err_drop_pkts;
	stats->multicast = edev->stats.rx_mcast_pkts +
			   edev->stats.rx_bcast_pkts;

	stats->rx_fifo_errors = edev->stats.no_buff_discards;

	stats->collisions = edev->stats.tx_total_collisions;
	stats->rx_crc_errors = edev->stats.rx_crc_errors;
	stats->rx_frame_errors = edev->stats.rx_align_errors;

	return stats;
}

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Yuval Mintz 已提交
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#ifdef CONFIG_QED_SRIOV
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static int qede_get_vf_config(struct net_device *dev, int vfidx,
			      struct ifla_vf_info *ivi)
{
	struct qede_dev *edev = netdev_priv(dev);

	if (!edev->ops)
		return -EINVAL;

	return edev->ops->iov->get_config(edev->cdev, vfidx, ivi);
}

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static int qede_set_vf_rate(struct net_device *dev, int vfidx,
			    int min_tx_rate, int max_tx_rate)
{
	struct qede_dev *edev = netdev_priv(dev);

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	return edev->ops->iov->set_rate(edev->cdev, vfidx, min_tx_rate,
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					max_tx_rate);
}

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static int qede_set_vf_spoofchk(struct net_device *dev, int vfidx, bool val)
{
	struct qede_dev *edev = netdev_priv(dev);

	if (!edev->ops)
		return -EINVAL;

	return edev->ops->iov->set_spoof(edev->cdev, vfidx, val);
}

Y
Yuval Mintz 已提交
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static int qede_set_vf_link_state(struct net_device *dev, int vfidx,
				  int link_state)
{
	struct qede_dev *edev = netdev_priv(dev);

	if (!edev->ops)
		return -EINVAL;

	return edev->ops->iov->set_link_state(edev->cdev, vfidx, link_state);
}
#endif

1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105
static void qede_config_accept_any_vlan(struct qede_dev *edev, bool action)
{
	struct qed_update_vport_params params;
	int rc;

	/* Proceed only if action actually needs to be performed */
	if (edev->accept_any_vlan == action)
		return;

	memset(&params, 0, sizeof(params));

	params.vport_id = 0;
	params.accept_any_vlan = action;
	params.update_accept_any_vlan_flg = 1;

	rc = edev->ops->vport_update(edev->cdev, &params);
	if (rc) {
		DP_ERR(edev, "Failed to %s accept-any-vlan\n",
		       action ? "enable" : "disable");
	} else {
		DP_INFO(edev, "%s accept-any-vlan\n",
			action ? "enabled" : "disabled");
		edev->accept_any_vlan = action;
	}
}

static int qede_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
{
	struct qede_dev *edev = netdev_priv(dev);
	struct qede_vlan *vlan, *tmp;
	int rc;

	DP_VERBOSE(edev, NETIF_MSG_IFUP, "Adding vlan 0x%04x\n", vid);

	vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
	if (!vlan) {
		DP_INFO(edev, "Failed to allocate struct for vlan\n");
		return -ENOMEM;
	}
	INIT_LIST_HEAD(&vlan->list);
	vlan->vid = vid;
	vlan->configured = false;

	/* Verify vlan isn't already configured */
	list_for_each_entry(tmp, &edev->vlan_list, list) {
		if (tmp->vid == vlan->vid) {
			DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
				   "vlan already configured\n");
			kfree(vlan);
			return -EEXIST;
		}
	}

	/* If interface is down, cache this VLAN ID and return */
	if (edev->state != QEDE_STATE_OPEN) {
		DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
			   "Interface is down, VLAN %d will be configured when interface is up\n",
			   vid);
		if (vid != 0)
			edev->non_configured_vlans++;
		list_add(&vlan->list, &edev->vlan_list);

		return 0;
	}

	/* Check for the filter limit.
	 * Note - vlan0 has a reserved filter and can be added without
	 * worrying about quota
	 */
	if ((edev->configured_vlans < edev->dev_info.num_vlan_filters) ||
	    (vlan->vid == 0)) {
		rc = qede_set_ucast_rx_vlan(edev,
					    QED_FILTER_XCAST_TYPE_ADD,
					    vlan->vid);
		if (rc) {
			DP_ERR(edev, "Failed to configure VLAN %d\n",
			       vlan->vid);
			kfree(vlan);
			return -EINVAL;
		}
		vlan->configured = true;

		/* vlan0 filter isn't consuming out of our quota */
		if (vlan->vid != 0)
			edev->configured_vlans++;
	} else {
		/* Out of quota; Activate accept-any-VLAN mode */
		if (!edev->non_configured_vlans)
			qede_config_accept_any_vlan(edev, true);

		edev->non_configured_vlans++;
	}

	list_add(&vlan->list, &edev->vlan_list);

	return 0;
}

static void qede_del_vlan_from_list(struct qede_dev *edev,
				    struct qede_vlan *vlan)
{
	/* vlan0 filter isn't consuming out of our quota */
	if (vlan->vid != 0) {
		if (vlan->configured)
			edev->configured_vlans--;
		else
			edev->non_configured_vlans--;
	}

	list_del(&vlan->list);
	kfree(vlan);
}

static int qede_configure_vlan_filters(struct qede_dev *edev)
{
	int rc = 0, real_rc = 0, accept_any_vlan = 0;
	struct qed_dev_eth_info *dev_info;
	struct qede_vlan *vlan = NULL;

	if (list_empty(&edev->vlan_list))
		return 0;

	dev_info = &edev->dev_info;

	/* Configure non-configured vlans */
	list_for_each_entry(vlan, &edev->vlan_list, list) {
		if (vlan->configured)
			continue;

		/* We have used all our credits, now enable accept_any_vlan */
		if ((vlan->vid != 0) &&
		    (edev->configured_vlans == dev_info->num_vlan_filters)) {
			accept_any_vlan = 1;
			continue;
		}

		DP_VERBOSE(edev, NETIF_MSG_IFUP, "Adding vlan %d\n", vlan->vid);

		rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_ADD,
					    vlan->vid);
		if (rc) {
			DP_ERR(edev, "Failed to configure VLAN %u\n",
			       vlan->vid);
			real_rc = rc;
			continue;
		}

		vlan->configured = true;
		/* vlan0 filter doesn't consume our VLAN filter's quota */
		if (vlan->vid != 0) {
			edev->non_configured_vlans--;
			edev->configured_vlans++;
		}
	}

	/* enable accept_any_vlan mode if we have more VLANs than credits,
	 * or remove accept_any_vlan mode if we've actually removed
	 * a non-configured vlan, and all remaining vlans are truly configured.
	 */

	if (accept_any_vlan)
		qede_config_accept_any_vlan(edev, true);
	else if (!edev->non_configured_vlans)
		qede_config_accept_any_vlan(edev, false);

	return real_rc;
}

static int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
{
	struct qede_dev *edev = netdev_priv(dev);
	struct qede_vlan *vlan = NULL;
	int rc;

	DP_VERBOSE(edev, NETIF_MSG_IFDOWN, "Removing vlan 0x%04x\n", vid);

	/* Find whether entry exists */
	list_for_each_entry(vlan, &edev->vlan_list, list)
		if (vlan->vid == vid)
			break;

	if (!vlan || (vlan->vid != vid)) {
		DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
			   "Vlan isn't configured\n");
		return 0;
	}

	if (edev->state != QEDE_STATE_OPEN) {
		/* As interface is already down, we don't have a VPORT
		 * instance to remove vlan filter. So just update vlan list
		 */
		DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
			   "Interface is down, removing VLAN from list only\n");
		qede_del_vlan_from_list(edev, vlan);
		return 0;
	}

	/* Remove vlan */
2106 2107 2108 2109 2110 2111 2112
	if (vlan->configured) {
		rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_DEL,
					    vid);
		if (rc) {
			DP_ERR(edev, "Failed to remove VLAN %d\n", vid);
			return -EINVAL;
		}
2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144
	}

	qede_del_vlan_from_list(edev, vlan);

	/* We have removed a VLAN - try to see if we can
	 * configure non-configured VLAN from the list.
	 */
	rc = qede_configure_vlan_filters(edev);

	return rc;
}

static void qede_vlan_mark_nonconfigured(struct qede_dev *edev)
{
	struct qede_vlan *vlan = NULL;

	if (list_empty(&edev->vlan_list))
		return;

	list_for_each_entry(vlan, &edev->vlan_list, list) {
		if (!vlan->configured)
			continue;

		vlan->configured = false;

		/* vlan0 filter isn't consuming out of our quota */
		if (vlan->vid != 0) {
			edev->non_configured_vlans++;
			edev->configured_vlans--;
		}

		DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
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2145
			   "marked vlan %d as non-configured\n", vlan->vid);
2146 2147 2148 2149 2150
	}

	edev->accept_any_vlan = false;
}

2151
static int qede_set_features(struct net_device *dev, netdev_features_t features)
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2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173
{
	struct qede_dev *edev = netdev_priv(dev);
	netdev_features_t changes = features ^ dev->features;
	bool need_reload = false;

	/* No action needed if hardware GRO is disabled during driver load */
	if (changes & NETIF_F_GRO) {
		if (dev->features & NETIF_F_GRO)
			need_reload = !edev->gro_disable;
		else
			need_reload = edev->gro_disable;
	}

	if (need_reload && netif_running(edev->ndev)) {
		dev->features = features;
		qede_reload(edev, NULL, NULL);
		return 1;
	}

	return 0;
}

2174 2175
static void qede_udp_tunnel_add(struct net_device *dev,
				struct udp_tunnel_info *ti)
2176 2177
{
	struct qede_dev *edev = netdev_priv(dev);
2178
	u16 t_port = ntohs(ti->port);
2179

2180 2181 2182 2183
	switch (ti->type) {
	case UDP_TUNNEL_TYPE_VXLAN:
		if (edev->vxlan_dst_port)
			return;
2184

2185
		edev->vxlan_dst_port = t_port;
2186

Y
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2187
		DP_VERBOSE(edev, QED_MSG_DEBUG, "Added vxlan port=%d\n",
2188
			   t_port);
2189

2190 2191 2192 2193 2194
		set_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags);
		break;
	case UDP_TUNNEL_TYPE_GENEVE:
		if (edev->geneve_dst_port)
			return;
2195

2196
		edev->geneve_dst_port = t_port;
2197

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2198
		DP_VERBOSE(edev, QED_MSG_DEBUG, "Added geneve port=%d\n",
2199 2200 2201 2202
			   t_port);
		set_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags);
		break;
	default:
2203
		return;
2204
	}
2205 2206 2207 2208

	schedule_delayed_work(&edev->sp_task, 0);
}

2209 2210
static void qede_udp_tunnel_del(struct net_device *dev,
				struct udp_tunnel_info *ti)
2211 2212
{
	struct qede_dev *edev = netdev_priv(dev);
2213
	u16 t_port = ntohs(ti->port);
2214

2215 2216 2217 2218
	switch (ti->type) {
	case UDP_TUNNEL_TYPE_VXLAN:
		if (t_port != edev->vxlan_dst_port)
			return;
2219

2220
		edev->vxlan_dst_port = 0;
2221

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2222
		DP_VERBOSE(edev, QED_MSG_DEBUG, "Deleted vxlan port=%d\n",
2223
			   t_port);
2224

2225 2226 2227 2228 2229
		set_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags);
		break;
	case UDP_TUNNEL_TYPE_GENEVE:
		if (t_port != edev->geneve_dst_port)
			return;
2230

2231
		edev->geneve_dst_port = 0;
2232

Y
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2233
		DP_VERBOSE(edev, QED_MSG_DEBUG, "Deleted geneve port=%d\n",
2234 2235 2236 2237 2238 2239
			   t_port);
		set_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags);
		break;
	default:
		return;
	}
2240 2241 2242 2243

	schedule_delayed_work(&edev->sp_task, 0);
}

2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277
/* 8B udp header + 8B base tunnel header + 32B option length */
#define QEDE_MAX_TUN_HDR_LEN 48

static netdev_features_t qede_features_check(struct sk_buff *skb,
					     struct net_device *dev,
					     netdev_features_t features)
{
	if (skb->encapsulation) {
		u8 l4_proto = 0;

		switch (vlan_get_protocol(skb)) {
		case htons(ETH_P_IP):
			l4_proto = ip_hdr(skb)->protocol;
			break;
		case htons(ETH_P_IPV6):
			l4_proto = ipv6_hdr(skb)->nexthdr;
			break;
		default:
			return features;
		}

		/* Disable offloads for geneve tunnels, as HW can't parse
		 * the geneve header which has option length greater than 32B.
		 */
		if ((l4_proto == IPPROTO_UDP) &&
		    ((skb_inner_mac_header(skb) -
		      skb_transport_header(skb)) > QEDE_MAX_TUN_HDR_LEN))
			return features & ~(NETIF_F_CSUM_MASK |
					    NETIF_F_GSO_MASK);
	}

	return features;
}

2278 2279 2280 2281
static const struct net_device_ops qede_netdev_ops = {
	.ndo_open = qede_open,
	.ndo_stop = qede_close,
	.ndo_start_xmit = qede_start_xmit,
2282 2283
	.ndo_set_rx_mode = qede_set_rx_mode,
	.ndo_set_mac_address = qede_set_mac_addr,
2284
	.ndo_validate_addr = eth_validate_addr,
2285
	.ndo_change_mtu = qede_change_mtu,
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#ifdef CONFIG_QED_SRIOV
Y
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2287
	.ndo_set_vf_mac = qede_set_vf_mac,
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2288 2289
	.ndo_set_vf_vlan = qede_set_vf_vlan,
#endif
2290 2291
	.ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid,
	.ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid,
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2292
	.ndo_set_features = qede_set_features,
2293
	.ndo_get_stats64 = qede_get_stats64,
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2294 2295
#ifdef CONFIG_QED_SRIOV
	.ndo_set_vf_link_state = qede_set_vf_link_state,
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2296
	.ndo_set_vf_spoofchk = qede_set_vf_spoofchk,
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2297
	.ndo_get_vf_config = qede_get_vf_config,
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2298 2299
	.ndo_set_vf_rate = qede_set_vf_rate,
#endif
2300 2301
	.ndo_udp_tunnel_add = qede_udp_tunnel_add,
	.ndo_udp_tunnel_del = qede_udp_tunnel_del,
2302
	.ndo_features_check = qede_features_check,
2303 2304
};

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2305 2306 2307 2308 2309 2310 2311 2312
/* -------------------------------------------------------------------------
 * START OF PROBE / REMOVE
 * -------------------------------------------------------------------------
 */

static struct qede_dev *qede_alloc_etherdev(struct qed_dev *cdev,
					    struct pci_dev *pdev,
					    struct qed_dev_eth_info *info,
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2313
					    u32 dp_module, u8 dp_level)
Y
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2314 2315 2316 2317 2318
{
	struct net_device *ndev;
	struct qede_dev *edev;

	ndev = alloc_etherdev_mqs(sizeof(*edev),
Y
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2319
				  info->num_queues, info->num_queues);
Y
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2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331
	if (!ndev) {
		pr_err("etherdev allocation failed\n");
		return NULL;
	}

	edev = netdev_priv(ndev);
	edev->ndev = ndev;
	edev->cdev = cdev;
	edev->pdev = pdev;
	edev->dp_module = dp_module;
	edev->dp_level = dp_level;
	edev->ops = qed_ops;
2332 2333
	edev->q_num_rx_buffers = NUM_RX_BDS_DEF;
	edev->q_num_tx_buffers = NUM_TX_BDS_DEF;
Y
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2334

Y
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2335 2336 2337
	DP_INFO(edev, "Allocated netdev with %d tx queues and %d rx queues\n",
		info->num_queues, info->num_queues);

Y
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2338 2339
	SET_NETDEV_DEV(ndev, &pdev->dev);

2340
	memset(&edev->stats, 0, sizeof(edev->stats));
Y
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2341 2342 2343 2344
	memcpy(&edev->dev_info, info, sizeof(*info));

	edev->num_tc = edev->dev_info.num_tc;

2345 2346
	INIT_LIST_HEAD(&edev->vlan_list);

Y
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2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364
	return edev;
}

static void qede_init_ndev(struct qede_dev *edev)
{
	struct net_device *ndev = edev->ndev;
	struct pci_dev *pdev = edev->pdev;
	u32 hw_features;

	pci_set_drvdata(pdev, ndev);

	ndev->mem_start = edev->dev_info.common.pci_mem_start;
	ndev->base_addr = ndev->mem_start;
	ndev->mem_end = edev->dev_info.common.pci_mem_end;
	ndev->irq = edev->dev_info.common.pci_irq;

	ndev->watchdog_timeo = TX_TIMEOUT;

2365 2366
	ndev->netdev_ops = &qede_netdev_ops;

2367 2368
	qede_set_ethtool_ops(ndev);

Y
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2369 2370
	ndev->priv_flags = IFF_UNICAST_FLT;

Y
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2371 2372 2373 2374 2375
	/* user-changeble features */
	hw_features = NETIF_F_GRO | NETIF_F_SG |
		      NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
		      NETIF_F_TSO | NETIF_F_TSO6;

2376 2377
	/* Encap features*/
	hw_features |= NETIF_F_GSO_GRE | NETIF_F_GSO_UDP_TUNNEL |
2378 2379
		       NETIF_F_TSO_ECN | NETIF_F_GSO_UDP_TUNNEL_CSUM |
		       NETIF_F_GSO_GRE_CSUM;
2380 2381 2382
	ndev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
				NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO_ECN |
				NETIF_F_TSO6 | NETIF_F_GSO_GRE |
2383 2384 2385
				NETIF_F_GSO_UDP_TUNNEL | NETIF_F_RXCSUM |
				NETIF_F_GSO_UDP_TUNNEL_CSUM |
				NETIF_F_GSO_GRE_CSUM;
2386

Y
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2387 2388 2389 2390
	ndev->vlan_features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
			      NETIF_F_HIGHDMA;
	ndev->features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
			 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA |
2391
			 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX;
Y
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2392 2393 2394

	ndev->hw_features = hw_features;

2395 2396 2397 2398
	/* MTU range: 46 - 9600 */
	ndev->min_mtu = ETH_ZLEN - ETH_HLEN;
	ndev->max_mtu = QEDE_MAX_JUMBO_PACKET_SIZE;

Y
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2399 2400
	/* Set network device HW mac */
	ether_addr_copy(edev->ndev->dev_addr, edev->dev_info.common.hw_mac);
2401 2402

	ndev->mtu = edev->dev_info.common.mtu;
Y
Yuval Mintz 已提交
2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415
}

/* This function converts from 32b param to two params of level and module
 * Input 32b decoding:
 * b31 - enable all NOTICE prints. NOTICE prints are for deviation from the
 * 'happy' flow, e.g. memory allocation failed.
 * b30 - enable all INFO prints. INFO prints are for major steps in the flow
 * and provide important parameters.
 * b29-b0 - per-module bitmap, where each bit enables VERBOSE prints of that
 * module. VERBOSE prints are for tracking the specific flow in low level.
 *
 * Notice that the level should be that of the lowest required logs.
 */
2416
void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level)
Y
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2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430
{
	*p_dp_level = QED_LEVEL_NOTICE;
	*p_dp_module = 0;

	if (debug & QED_LOG_VERBOSE_MASK) {
		*p_dp_level = QED_LEVEL_VERBOSE;
		*p_dp_module = (debug & 0x3FFFFFFF);
	} else if (debug & QED_LOG_INFO_MASK) {
		*p_dp_level = QED_LEVEL_INFO;
	} else if (debug & QED_LOG_NOTICE_MASK) {
		*p_dp_level = QED_LEVEL_NOTICE;
	}
}

2431 2432 2433 2434 2435 2436
static void qede_free_fp_array(struct qede_dev *edev)
{
	if (edev->fp_array) {
		struct qede_fastpath *fp;
		int i;

2437
		for_each_queue(i) {
2438 2439 2440 2441 2442 2443 2444 2445
			fp = &edev->fp_array[i];

			kfree(fp->sb_info);
			kfree(fp->rxq);
			kfree(fp->txqs);
		}
		kfree(edev->fp_array);
	}
2446 2447 2448 2449

	edev->num_queues = 0;
	edev->fp_num_tx = 0;
	edev->fp_num_rx = 0;
2450 2451 2452 2453
}

static int qede_alloc_fp_array(struct qede_dev *edev)
{
2454
	u8 fp_combined, fp_rx = edev->fp_num_rx;
2455 2456 2457
	struct qede_fastpath *fp;
	int i;

2458
	edev->fp_array = kcalloc(QEDE_QUEUE_CNT(edev),
2459 2460 2461 2462 2463 2464
				 sizeof(*edev->fp_array), GFP_KERNEL);
	if (!edev->fp_array) {
		DP_NOTICE(edev, "fp array allocation failed\n");
		goto err;
	}

2465 2466 2467 2468 2469 2470 2471 2472
	fp_combined = QEDE_QUEUE_CNT(edev) - fp_rx - edev->fp_num_tx;

	/* Allocate the FP elements for Rx queues followed by combined and then
	 * the Tx. This ordering should be maintained so that the respective
	 * queues (Rx or Tx) will be together in the fastpath array and the
	 * associated ids will be sequential.
	 */
	for_each_queue(i) {
2473 2474 2475 2476 2477 2478 2479 2480
		fp = &edev->fp_array[i];

		fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
		if (!fp->sb_info) {
			DP_NOTICE(edev, "sb info struct allocation failed\n");
			goto err;
		}

2481 2482 2483 2484 2485 2486 2487 2488
		if (fp_rx) {
			fp->type = QEDE_FASTPATH_RX;
			fp_rx--;
		} else if (fp_combined) {
			fp->type = QEDE_FASTPATH_COMBINED;
			fp_combined--;
		} else {
			fp->type = QEDE_FASTPATH_TX;
2489 2490
		}

2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507
		if (fp->type & QEDE_FASTPATH_TX) {
			fp->txqs = kcalloc(edev->num_tc, sizeof(*fp->txqs),
					   GFP_KERNEL);
			if (!fp->txqs) {
				DP_NOTICE(edev,
					  "TXQ array allocation failed\n");
				goto err;
			}
		}

		if (fp->type & QEDE_FASTPATH_RX) {
			fp->rxq = kcalloc(1, sizeof(*fp->rxq), GFP_KERNEL);
			if (!fp->rxq) {
				DP_NOTICE(edev,
					  "RXQ struct allocation failed\n");
				goto err;
			}
2508 2509 2510 2511 2512 2513 2514 2515 2516
		}
	}

	return 0;
err:
	qede_free_fp_array(edev);
	return -ENOMEM;
}

2517 2518 2519 2520
static void qede_sp_task(struct work_struct *work)
{
	struct qede_dev *edev = container_of(work, struct qede_dev,
					     sp_task.work);
2521 2522
	struct qed_dev *cdev = edev->cdev;

2523 2524 2525 2526 2527 2528 2529
	mutex_lock(&edev->qede_lock);

	if (edev->state == QEDE_STATE_OPEN) {
		if (test_and_clear_bit(QEDE_SP_RX_MODE, &edev->sp_flags))
			qede_config_rx_mode(edev->ndev);
	}

2530 2531 2532 2533 2534 2535 2536 2537 2538
	if (test_and_clear_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags)) {
		struct qed_tunn_params tunn_params;

		memset(&tunn_params, 0, sizeof(tunn_params));
		tunn_params.update_vxlan_port = 1;
		tunn_params.vxlan_port = edev->vxlan_dst_port;
		qed_ops->tunn_config(cdev, &tunn_params);
	}

2539 2540 2541 2542 2543 2544 2545 2546 2547
	if (test_and_clear_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags)) {
		struct qed_tunn_params tunn_params;

		memset(&tunn_params, 0, sizeof(tunn_params));
		tunn_params.update_geneve_port = 1;
		tunn_params.geneve_port = edev->geneve_dst_port;
		qed_ops->tunn_config(cdev, &tunn_params);
	}

2548 2549 2550
	mutex_unlock(&edev->qede_lock);
}

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2551 2552 2553 2554
static void qede_update_pf_params(struct qed_dev *cdev)
{
	struct qed_pf_params pf_params;

2555
	/* 64 rx + 64 tx */
Y
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2556
	memset(&pf_params, 0, sizeof(struct qed_pf_params));
2557
	pf_params.eth_pf_params.num_cons = 128;
Y
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2558 2559 2560 2561 2562 2563 2564 2565
	qed_ops->common->update_pf_params(cdev, &pf_params);
}

enum qede_probe_mode {
	QEDE_PROBE_NORMAL,
};

static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
Y
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2566
			bool is_vf, enum qede_probe_mode mode)
Y
Yuval Mintz 已提交
2567
{
Y
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2568
	struct qed_probe_params probe_params;
Y
Yuval Mintz 已提交
2569
	struct qed_slowpath_params sp_params;
Y
Yuval Mintz 已提交
2570 2571 2572 2573 2574 2575 2576 2577
	struct qed_dev_eth_info dev_info;
	struct qede_dev *edev;
	struct qed_dev *cdev;
	int rc;

	if (unlikely(dp_level & QED_LEVEL_INFO))
		pr_notice("Starting qede probe\n");

Y
Yuval Mintz 已提交
2578 2579 2580 2581 2582 2583
	memset(&probe_params, 0, sizeof(probe_params));
	probe_params.protocol = QED_PROTOCOL_ETH;
	probe_params.dp_module = dp_module;
	probe_params.dp_level = dp_level;
	probe_params.is_vf = is_vf;
	cdev = qed_ops->common->probe(pdev, &probe_params);
Y
Yuval Mintz 已提交
2584 2585 2586 2587 2588 2589 2590 2591
	if (!cdev) {
		rc = -ENODEV;
		goto err0;
	}

	qede_update_pf_params(cdev);

	/* Start the Slowpath-process */
Y
Yuval Mintz 已提交
2592 2593 2594 2595 2596 2597 2598 2599
	memset(&sp_params, 0, sizeof(sp_params));
	sp_params.int_mode = QED_INT_MODE_MSIX;
	sp_params.drv_major = QEDE_MAJOR_VERSION;
	sp_params.drv_minor = QEDE_MINOR_VERSION;
	sp_params.drv_rev = QEDE_REVISION_VERSION;
	sp_params.drv_eng = QEDE_ENGINEERING_VERSION;
	strlcpy(sp_params.name, "qede LAN", QED_DRV_VER_STR_SIZE);
	rc = qed_ops->common->slowpath_start(cdev, &sp_params);
Y
Yuval Mintz 已提交
2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616
	if (rc) {
		pr_notice("Cannot start slowpath\n");
		goto err1;
	}

	/* Learn information crucial for qede to progress */
	rc = qed_ops->fill_dev_info(cdev, &dev_info);
	if (rc)
		goto err2;

	edev = qede_alloc_etherdev(cdev, pdev, &dev_info, dp_module,
				   dp_level);
	if (!edev) {
		rc = -ENOMEM;
		goto err2;
	}

Y
Yuval Mintz 已提交
2617 2618 2619
	if (is_vf)
		edev->flags |= QEDE_FLAG_IS_VF;

Y
Yuval Mintz 已提交
2620 2621
	qede_init_ndev(edev);

R
Ram Amrani 已提交
2622 2623 2624 2625
	rc = qede_roce_dev_add(edev);
	if (rc)
		goto err3;

2626 2627 2628
	rc = register_netdev(edev->ndev);
	if (rc) {
		DP_NOTICE(edev, "Cannot register net-device\n");
R
Ram Amrani 已提交
2629
		goto err4;
2630 2631
	}

Y
Yuval Mintz 已提交
2632 2633
	edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);

S
Sudarsana Kalluru 已提交
2634 2635
	edev->ops->register_ops(cdev, &qede_ll_ops, edev);

2636
#ifdef CONFIG_DCB
2637 2638
	if (!IS_VF(edev))
		qede_set_dcbnl_ops(edev->ndev);
2639 2640
#endif

2641 2642
	INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
	mutex_init(&edev->qede_lock);
2643
	edev->rx_copybreak = QEDE_RX_HDR_SIZE;
2644

Y
Yuval Mintz 已提交
2645 2646 2647 2648
	DP_INFO(edev, "Ending successfully qede probe\n");

	return 0;

R
Ram Amrani 已提交
2649 2650
err4:
	qede_roce_dev_remove(edev);
2651 2652
err3:
	free_netdev(edev->ndev);
Y
Yuval Mintz 已提交
2653 2654 2655 2656 2657 2658 2659 2660 2661 2662
err2:
	qed_ops->common->slowpath_stop(cdev);
err1:
	qed_ops->common->remove(cdev);
err0:
	return rc;
}

static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
Y
Yuval Mintz 已提交
2663
	bool is_vf = false;
Y
Yuval Mintz 已提交
2664 2665 2666
	u32 dp_module = 0;
	u8 dp_level = 0;

Y
Yuval Mintz 已提交
2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677
	switch ((enum qede_pci_private)id->driver_data) {
	case QEDE_PRIVATE_VF:
		if (debug & QED_LOG_VERBOSE_MASK)
			dev_err(&pdev->dev, "Probing a VF\n");
		is_vf = true;
		break;
	default:
		if (debug & QED_LOG_VERBOSE_MASK)
			dev_err(&pdev->dev, "Probing a PF\n");
	}

Y
Yuval Mintz 已提交
2678 2679
	qede_config_debug(debug, &dp_module, &dp_level);

Y
Yuval Mintz 已提交
2680
	return __qede_probe(pdev, dp_module, dp_level, is_vf,
Y
Yuval Mintz 已提交
2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695
			    QEDE_PROBE_NORMAL);
}

enum qede_remove_mode {
	QEDE_REMOVE_NORMAL,
};

static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
{
	struct net_device *ndev = pci_get_drvdata(pdev);
	struct qede_dev *edev = netdev_priv(ndev);
	struct qed_dev *cdev = edev->cdev;

	DP_INFO(edev, "Starting qede_remove\n");

2696
	cancel_delayed_work_sync(&edev->sp_task);
R
Ram Amrani 已提交
2697

2698 2699
	unregister_netdev(ndev);

R
Ram Amrani 已提交
2700 2701
	qede_roce_dev_remove(edev);

Y
Yuval Mintz 已提交
2702 2703 2704 2705 2706 2707 2708 2709
	edev->ops->common->set_power_state(cdev, PCI_D0);

	pci_set_drvdata(pdev, NULL);

	free_netdev(ndev);

	/* Use global ops since we've freed edev */
	qed_ops->common->slowpath_stop(cdev);
M
Mintz, Yuval 已提交
2710 2711
	if (system_state == SYSTEM_POWER_OFF)
		return;
Y
Yuval Mintz 已提交
2712 2713
	qed_ops->common->remove(cdev);

Y
Yuval Mintz 已提交
2714
	dev_info(&pdev->dev, "Ending qede_remove successfully\n");
Y
Yuval Mintz 已提交
2715 2716 2717 2718 2719 2720
}

static void qede_remove(struct pci_dev *pdev)
{
	__qede_remove(pdev, QEDE_REMOVE_NORMAL);
}
2721

M
Mintz, Yuval 已提交
2722 2723 2724 2725 2726
static void qede_shutdown(struct pci_dev *pdev)
{
	__qede_remove(pdev, QEDE_REMOVE_NORMAL);
}

2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737
/* -------------------------------------------------------------------------
 * START OF LOAD / UNLOAD
 * -------------------------------------------------------------------------
 */

static int qede_set_num_queues(struct qede_dev *edev)
{
	int rc;
	u16 rss_num;

	/* Setup queues according to possible resources*/
2738 2739
	if (edev->req_queues)
		rss_num = edev->req_queues;
2740 2741 2742
	else
		rss_num = netif_get_num_default_rss_queues() *
			  edev->dev_info.common.num_hwfns;
2743 2744 2745 2746 2747 2748

	rss_num = min_t(u16, QEDE_MAX_RSS_CNT(edev), rss_num);

	rc = edev->ops->common->set_fp_int(edev->cdev, rss_num);
	if (rc > 0) {
		/* Managed to request interrupts for our queues */
2749
		edev->num_queues = rc;
2750
		DP_INFO(edev, "Managed %d [of %d] RSS queues\n",
2751
			QEDE_QUEUE_CNT(edev), rss_num);
2752 2753
		rc = 0;
	}
2754 2755 2756 2757

	edev->fp_num_tx = edev->req_num_tx;
	edev->fp_num_rx = edev->req_num_rx;

2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770
	return rc;
}

static void qede_free_mem_sb(struct qede_dev *edev,
			     struct qed_sb_info *sb_info)
{
	if (sb_info->sb_virt)
		dma_free_coherent(&edev->pdev->dev, sizeof(*sb_info->sb_virt),
				  (void *)sb_info->sb_virt, sb_info->sb_phys);
}

/* This function allocates fast-path status block memory */
static int qede_alloc_mem_sb(struct qede_dev *edev,
Y
Yuval Mintz 已提交
2771
			     struct qed_sb_info *sb_info, u16 sb_id)
2772 2773 2774 2775 2776 2777
{
	struct status_block *sb_virt;
	dma_addr_t sb_phys;
	int rc;

	sb_virt = dma_alloc_coherent(&edev->pdev->dev,
Y
Yuval Mintz 已提交
2778
				     sizeof(*sb_virt), &sb_phys, GFP_KERNEL);
2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803
	if (!sb_virt) {
		DP_ERR(edev, "Status block allocation failed\n");
		return -ENOMEM;
	}

	rc = edev->ops->common->sb_init(edev->cdev, sb_info,
					sb_virt, sb_phys, sb_id,
					QED_SB_TYPE_L2_QUEUE);
	if (rc) {
		DP_ERR(edev, "Status block initialization failed\n");
		dma_free_coherent(&edev->pdev->dev, sizeof(*sb_virt),
				  sb_virt, sb_phys);
		return rc;
	}

	return 0;
}

static void qede_free_rx_buffers(struct qede_dev *edev,
				 struct qede_rx_queue *rxq)
{
	u16 i;

	for (i = rxq->sw_rx_cons; i != rxq->sw_rx_prod; i++) {
		struct sw_rx_data *rx_buf;
Y
Yuval Mintz 已提交
2804
		struct page *data;
2805 2806 2807 2808

		rx_buf = &rxq->sw_rx_ring[i & NUM_RX_BDS_MAX];
		data = rx_buf->data;

Y
Yuval Mintz 已提交
2809
		dma_unmap_page(&edev->pdev->dev,
Y
Yuval Mintz 已提交
2810
			       rx_buf->mapping, PAGE_SIZE, DMA_FROM_DEVICE);
2811 2812

		rx_buf->data = NULL;
Y
Yuval Mintz 已提交
2813
		__free_page(data);
2814 2815 2816
	}
}

Y
Yuval Mintz 已提交
2817 2818
static void qede_free_sge_mem(struct qede_dev *edev, struct qede_rx_queue *rxq)
{
2819 2820 2821 2822 2823 2824 2825 2826 2827
	int i;

	if (edev->gro_disable)
		return;

	for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
		struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
		struct sw_rx_data *replace_buf = &tpa_info->replace_buf;

2828
		if (replace_buf->data) {
2829
			dma_unmap_page(&edev->pdev->dev,
M
Manish Chopra 已提交
2830
				       replace_buf->mapping,
2831 2832 2833 2834 2835 2836
				       PAGE_SIZE, DMA_FROM_DEVICE);
			__free_page(replace_buf->data);
		}
	}
}

Y
Yuval Mintz 已提交
2837
static void qede_free_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
2838
{
2839 2840
	qede_free_sge_mem(edev, rxq);

2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857
	/* Free rx buffers */
	qede_free_rx_buffers(edev, rxq);

	/* Free the parallel SW ring */
	kfree(rxq->sw_rx_ring);

	/* Free the real RQ ring used by FW */
	edev->ops->common->chain_free(edev->cdev, &rxq->rx_bd_ring);
	edev->ops->common->chain_free(edev->cdev, &rxq->rx_comp_ring);
}

static int qede_alloc_rx_buffer(struct qede_dev *edev,
				struct qede_rx_queue *rxq)
{
	struct sw_rx_data *sw_rx_data;
	struct eth_rx_bd *rx_bd;
	dma_addr_t mapping;
Y
Yuval Mintz 已提交
2858
	struct page *data;
2859

Y
Yuval Mintz 已提交
2860
	data = alloc_pages(GFP_ATOMIC, 0);
2861
	if (unlikely(!data)) {
Y
Yuval Mintz 已提交
2862
		DP_NOTICE(edev, "Failed to allocate Rx data [page]\n");
2863 2864 2865
		return -ENOMEM;
	}

Y
Yuval Mintz 已提交
2866 2867 2868 2869 2870
	/* Map the entire page as it would be used
	 * for multiple RX buffer segment size mapping.
	 */
	mapping = dma_map_page(&edev->pdev->dev, data, 0,
			       PAGE_SIZE, DMA_FROM_DEVICE);
2871
	if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
Y
Yuval Mintz 已提交
2872
		__free_page(data);
2873 2874 2875 2876 2877
		DP_NOTICE(edev, "Failed to map Rx buffer\n");
		return -ENOMEM;
	}

	sw_rx_data = &rxq->sw_rx_ring[rxq->sw_rx_prod & NUM_RX_BDS_MAX];
Y
Yuval Mintz 已提交
2878
	sw_rx_data->page_offset = 0;
2879
	sw_rx_data->data = data;
Y
Yuval Mintz 已提交
2880
	sw_rx_data->mapping = mapping;
2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892

	/* Advance PROD and get BD pointer */
	rx_bd = (struct eth_rx_bd *)qed_chain_produce(&rxq->rx_bd_ring);
	WARN_ON(!rx_bd);
	rx_bd->addr.hi = cpu_to_le32(upper_32_bits(mapping));
	rx_bd->addr.lo = cpu_to_le32(lower_32_bits(mapping));

	rxq->sw_rx_prod++;

	return 0;
}

Y
Yuval Mintz 已提交
2893
static int qede_alloc_sge_mem(struct qede_dev *edev, struct qede_rx_queue *rxq)
2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924
{
	dma_addr_t mapping;
	int i;

	if (edev->gro_disable)
		return 0;

	if (edev->ndev->mtu > PAGE_SIZE) {
		edev->gro_disable = 1;
		return 0;
	}

	for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
		struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
		struct sw_rx_data *replace_buf = &tpa_info->replace_buf;

		replace_buf->data = alloc_pages(GFP_ATOMIC, 0);
		if (unlikely(!replace_buf->data)) {
			DP_NOTICE(edev,
				  "Failed to allocate TPA skb pool [replacement buffer]\n");
			goto err;
		}

		mapping = dma_map_page(&edev->pdev->dev, replace_buf->data, 0,
				       rxq->rx_buf_size, DMA_FROM_DEVICE);
		if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
			DP_NOTICE(edev,
				  "Failed to map TPA replacement buffer\n");
			goto err;
		}

M
Manish Chopra 已提交
2925
		replace_buf->mapping = mapping;
2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938
		tpa_info->replace_buf.page_offset = 0;

		tpa_info->replace_buf_mapping = mapping;
		tpa_info->agg_state = QEDE_AGG_STATE_NONE;
	}

	return 0;
err:
	qede_free_sge_mem(edev, rxq);
	edev->gro_disable = 1;
	return -ENOMEM;
}

2939
/* This function allocates all memory needed per Rx queue */
Y
Yuval Mintz 已提交
2940
static int qede_alloc_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
2941
{
2942
	int i, rc, size;
2943 2944 2945

	rxq->num_rx_buffers = edev->q_num_rx_buffers;

Y
Yuval Mintz 已提交
2946 2947
	rxq->rx_buf_size = NET_IP_ALIGN + ETH_OVERHEAD + edev->ndev->mtu;

Y
Yuval Mintz 已提交
2948 2949 2950 2951 2952
	if (rxq->rx_buf_size > PAGE_SIZE)
		rxq->rx_buf_size = PAGE_SIZE;

	/* Segment size to spilt a page in multiple equal parts */
	rxq->rx_buf_seg_size = roundup_pow_of_two(rxq->rx_buf_size);
2953 2954

	/* Allocate the parallel driver ring for Rx buffers */
Y
Yuval Mintz 已提交
2955
	size = sizeof(*rxq->sw_rx_ring) * RX_RING_SIZE;
2956 2957 2958
	rxq->sw_rx_ring = kzalloc(size, GFP_KERNEL);
	if (!rxq->sw_rx_ring) {
		DP_ERR(edev, "Rx buffers ring allocation failed\n");
2959
		rc = -ENOMEM;
2960 2961 2962 2963 2964 2965 2966
		goto err;
	}

	/* Allocate FW Rx ring  */
	rc = edev->ops->common->chain_alloc(edev->cdev,
					    QED_CHAIN_USE_TO_CONSUME_PRODUCE,
					    QED_CHAIN_MODE_NEXT_PTR,
Y
Yuval Mintz 已提交
2967
					    QED_CHAIN_CNT_TYPE_U16,
Y
Yuval Mintz 已提交
2968
					    RX_RING_SIZE,
2969 2970 2971 2972 2973 2974 2975 2976 2977 2978
					    sizeof(struct eth_rx_bd),
					    &rxq->rx_bd_ring);

	if (rc)
		goto err;

	/* Allocate FW completion ring */
	rc = edev->ops->common->chain_alloc(edev->cdev,
					    QED_CHAIN_USE_TO_CONSUME,
					    QED_CHAIN_MODE_PBL,
Y
Yuval Mintz 已提交
2979
					    QED_CHAIN_CNT_TYPE_U16,
Y
Yuval Mintz 已提交
2980
					    RX_RING_SIZE,
2981 2982 2983 2984 2985 2986 2987 2988
					    sizeof(union eth_rx_cqe),
					    &rxq->rx_comp_ring);
	if (rc)
		goto err;

	/* Allocate buffers for the Rx ring */
	for (i = 0; i < rxq->num_rx_buffers; i++) {
		rc = qede_alloc_rx_buffer(edev, rxq);
2989 2990 2991 2992 2993
		if (rc) {
			DP_ERR(edev,
			       "Rx buffers allocation failed at index %d\n", i);
			goto err;
		}
2994 2995
	}

2996
	rc = qede_alloc_sge_mem(edev, rxq);
2997
err:
2998
	return rc;
2999 3000
}

Y
Yuval Mintz 已提交
3001
static void qede_free_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
3002 3003 3004 3005 3006 3007 3008 3009 3010
{
	/* Free the parallel SW ring */
	kfree(txq->sw_tx_ring);

	/* Free the real RQ ring used by FW */
	edev->ops->common->chain_free(edev->cdev, &txq->tx_pbl);
}

/* This function allocates all memory needed per Tx queue */
Y
Yuval Mintz 已提交
3011
static int qede_alloc_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
3012 3013 3014 3015 3016 3017 3018
{
	int size, rc;
	union eth_tx_bd_types *p_virt;

	txq->num_tx_buffers = edev->q_num_tx_buffers;

	/* Allocate the parallel driver ring for Tx buffers */
3019
	size = sizeof(*txq->sw_tx_ring) * TX_RING_SIZE;
3020 3021 3022 3023 3024 3025 3026 3027 3028
	txq->sw_tx_ring = kzalloc(size, GFP_KERNEL);
	if (!txq->sw_tx_ring) {
		DP_NOTICE(edev, "Tx buffers ring allocation failed\n");
		goto err;
	}

	rc = edev->ops->common->chain_alloc(edev->cdev,
					    QED_CHAIN_USE_TO_CONSUME_PRODUCE,
					    QED_CHAIN_MODE_PBL,
Y
Yuval Mintz 已提交
3029
					    QED_CHAIN_CNT_TYPE_U16,
3030
					    TX_RING_SIZE,
Y
Yuval Mintz 已提交
3031
					    sizeof(*p_virt), &txq->tx_pbl);
3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042
	if (rc)
		goto err;

	return 0;

err:
	qede_free_mem_txq(edev, txq);
	return -ENOMEM;
}

/* This function frees all memory of a single fp */
Y
Yuval Mintz 已提交
3043
static void qede_free_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
3044 3045 3046 3047 3048
{
	int tc;

	qede_free_mem_sb(edev, fp->sb_info);

3049 3050
	if (fp->type & QEDE_FASTPATH_RX)
		qede_free_mem_rxq(edev, fp->rxq);
3051

3052 3053 3054
	if (fp->type & QEDE_FASTPATH_TX)
		for (tc = 0; tc < edev->num_tc; tc++)
			qede_free_mem_txq(edev, &fp->txqs[tc]);
3055 3056 3057
}

/* This function allocates all memory needed for a single fp (i.e. an entity
3058
 * which contains status block, one rx queue and/or multiple per-TC tx queues.
3059
 */
Y
Yuval Mintz 已提交
3060
static int qede_alloc_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
3061 3062 3063
{
	int rc, tc;

3064
	rc = qede_alloc_mem_sb(edev, fp->sb_info, fp->id);
3065 3066 3067
	if (rc)
		goto err;

3068 3069
	if (fp->type & QEDE_FASTPATH_RX) {
		rc = qede_alloc_mem_rxq(edev, fp->rxq);
3070 3071 3072 3073
		if (rc)
			goto err;
	}

3074 3075 3076 3077 3078 3079 3080 3081
	if (fp->type & QEDE_FASTPATH_TX) {
		for (tc = 0; tc < edev->num_tc; tc++) {
			rc = qede_alloc_mem_txq(edev, &fp->txqs[tc]);
			if (rc)
				goto err;
		}
	}

3082 3083
	return 0;
err:
3084
	return rc;
3085 3086 3087 3088 3089 3090
}

static void qede_free_mem_load(struct qede_dev *edev)
{
	int i;

3091
	for_each_queue(i) {
3092 3093 3094 3095 3096 3097 3098 3099 3100
		struct qede_fastpath *fp = &edev->fp_array[i];

		qede_free_mem_fp(edev, fp);
	}
}

/* This function allocates all qede memory at NIC load. */
static int qede_alloc_mem_load(struct qede_dev *edev)
{
3101
	int rc = 0, queue_id;
3102

3103 3104
	for (queue_id = 0; queue_id < QEDE_QUEUE_CNT(edev); queue_id++) {
		struct qede_fastpath *fp = &edev->fp_array[queue_id];
3105 3106

		rc = qede_alloc_mem_fp(edev, fp);
3107
		if (rc) {
3108
			DP_ERR(edev,
3109
			       "Failed to allocate memory for fastpath - rss id = %d\n",
3110
			       queue_id);
3111 3112
			qede_free_mem_load(edev);
			return rc;
3113 3114 3115 3116 3117 3118 3119 3120 3121
		}
	}

	return 0;
}

/* This function inits fp content and resets the SB, RXQ and TXQ structures */
static void qede_init_fp(struct qede_dev *edev)
{
3122
	int queue_id, rxq_index = 0, txq_index = 0, tc;
3123 3124
	struct qede_fastpath *fp;

3125 3126
	for_each_queue(queue_id) {
		fp = &edev->fp_array[queue_id];
3127 3128

		fp->edev = edev;
3129
		fp->id = queue_id;
3130 3131 3132 3133 3134

		memset((void *)&fp->napi, 0, sizeof(fp->napi));

		memset((void *)fp->sb_info, 0, sizeof(*fp->sb_info));

3135 3136 3137 3138
		if (fp->type & QEDE_FASTPATH_RX) {
			memset((void *)fp->rxq, 0, sizeof(*fp->rxq));
			fp->rxq->rxq_id = rxq_index++;
		}
3139

3140 3141 3142 3143 3144 3145 3146 3147 3148 3149
		if (fp->type & QEDE_FASTPATH_TX) {
			memset((void *)fp->txqs, 0,
			       (edev->num_tc * sizeof(*fp->txqs)));
			for (tc = 0; tc < edev->num_tc; tc++) {
				fp->txqs[tc].index = txq_index +
				    tc * QEDE_TSS_COUNT(edev);
				if (edev->dev_info.is_legacy)
					fp->txqs[tc].is_legacy = true;
			}
			txq_index++;
3150 3151 3152
		}

		snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
3153
			 edev->ndev->name, queue_id);
3154
	}
3155 3156

	edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO);
3157 3158 3159 3160 3161 3162
}

static int qede_set_real_num_queues(struct qede_dev *edev)
{
	int rc = 0;

3163
	rc = netif_set_real_num_tx_queues(edev->ndev, QEDE_TSS_COUNT(edev));
3164 3165 3166 3167
	if (rc) {
		DP_NOTICE(edev, "Failed to set real number of Tx queues\n");
		return rc;
	}
3168 3169

	rc = netif_set_real_num_rx_queues(edev->ndev, QEDE_RSS_COUNT(edev));
3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181
	if (rc) {
		DP_NOTICE(edev, "Failed to set real number of Rx queues\n");
		return rc;
	}

	return 0;
}

static void qede_napi_disable_remove(struct qede_dev *edev)
{
	int i;

3182
	for_each_queue(i) {
3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193
		napi_disable(&edev->fp_array[i].napi);

		netif_napi_del(&edev->fp_array[i].napi);
	}
}

static void qede_napi_add_enable(struct qede_dev *edev)
{
	int i;

	/* Add NAPI objects */
3194
	for_each_queue(i) {
3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222
		netif_napi_add(edev->ndev, &edev->fp_array[i].napi,
			       qede_poll, NAPI_POLL_WEIGHT);
		napi_enable(&edev->fp_array[i].napi);
	}
}

static void qede_sync_free_irqs(struct qede_dev *edev)
{
	int i;

	for (i = 0; i < edev->int_info.used_cnt; i++) {
		if (edev->int_info.msix_cnt) {
			synchronize_irq(edev->int_info.msix[i].vector);
			free_irq(edev->int_info.msix[i].vector,
				 &edev->fp_array[i]);
		} else {
			edev->ops->common->simd_handler_clean(edev->cdev, i);
		}
	}

	edev->int_info.used_cnt = 0;
}

static int qede_req_msix_irqs(struct qede_dev *edev)
{
	int i, rc;

	/* Sanitize number of interrupts == number of prepared RSS queues */
3223
	if (QEDE_QUEUE_CNT(edev) > edev->int_info.msix_cnt) {
3224 3225
		DP_ERR(edev,
		       "Interrupt mismatch: %d RSS queues > %d MSI-x vectors\n",
3226
		       QEDE_QUEUE_CNT(edev), edev->int_info.msix_cnt);
3227 3228 3229
		return -EINVAL;
	}

3230
	for (i = 0; i < QEDE_QUEUE_CNT(edev); i++) {
3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274
		rc = request_irq(edev->int_info.msix[i].vector,
				 qede_msix_fp_int, 0, edev->fp_array[i].name,
				 &edev->fp_array[i]);
		if (rc) {
			DP_ERR(edev, "Request fp %d irq failed\n", i);
			qede_sync_free_irqs(edev);
			return rc;
		}
		DP_VERBOSE(edev, NETIF_MSG_INTR,
			   "Requested fp irq for %s [entry %d]. Cookie is at %p\n",
			   edev->fp_array[i].name, i,
			   &edev->fp_array[i]);
		edev->int_info.used_cnt++;
	}

	return 0;
}

static void qede_simd_fp_handler(void *cookie)
{
	struct qede_fastpath *fp = (struct qede_fastpath *)cookie;

	napi_schedule_irqoff(&fp->napi);
}

static int qede_setup_irqs(struct qede_dev *edev)
{
	int i, rc = 0;

	/* Learn Interrupt configuration */
	rc = edev->ops->common->get_fp_int(edev->cdev, &edev->int_info);
	if (rc)
		return rc;

	if (edev->int_info.msix_cnt) {
		rc = qede_req_msix_irqs(edev);
		if (rc)
			return rc;
		edev->ndev->irq = edev->int_info.msix[0].vector;
	} else {
		const struct qed_common_ops *ops;

		/* qed should learn receive the RSS ids and callbacks */
		ops = edev->ops->common;
3275
		for (i = 0; i < QEDE_QUEUE_CNT(edev); i++)
3276 3277 3278
			ops->simd_handler_config(edev->cdev,
						 &edev->fp_array[i], i,
						 qede_simd_fp_handler);
3279
		edev->int_info.used_cnt = QEDE_QUEUE_CNT(edev);
3280 3281 3282 3283 3284
	}
	return 0;
}

static int qede_drain_txq(struct qede_dev *edev,
Y
Yuval Mintz 已提交
3285
			  struct qede_tx_queue *txq, bool allow_drain)
3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336
{
	int rc, cnt = 1000;

	while (txq->sw_tx_cons != txq->sw_tx_prod) {
		if (!cnt) {
			if (allow_drain) {
				DP_NOTICE(edev,
					  "Tx queue[%d] is stuck, requesting MCP to drain\n",
					  txq->index);
				rc = edev->ops->common->drain(edev->cdev);
				if (rc)
					return rc;
				return qede_drain_txq(edev, txq, false);
			}
			DP_NOTICE(edev,
				  "Timeout waiting for tx queue[%d]: PROD=%d, CONS=%d\n",
				  txq->index, txq->sw_tx_prod,
				  txq->sw_tx_cons);
			return -ENODEV;
		}
		cnt--;
		usleep_range(1000, 2000);
		barrier();
	}

	/* FW finished processing, wait for HW to transmit all tx packets */
	usleep_range(1000, 2000);

	return 0;
}

static int qede_stop_queues(struct qede_dev *edev)
{
	struct qed_update_vport_params vport_update_params;
	struct qed_dev *cdev = edev->cdev;
	int rc, tc, i;

	/* Disable the vport */
	memset(&vport_update_params, 0, sizeof(vport_update_params));
	vport_update_params.vport_id = 0;
	vport_update_params.update_vport_active_flg = 1;
	vport_update_params.vport_active_flg = 0;
	vport_update_params.update_rss_flg = 0;

	rc = edev->ops->vport_update(cdev, &vport_update_params);
	if (rc) {
		DP_ERR(edev, "Failed to update vport\n");
		return rc;
	}

	/* Flush Tx queues. If needed, request drain from MCP */
3337
	for_each_queue(i) {
3338 3339
		struct qede_fastpath *fp = &edev->fp_array[i];

3340 3341 3342
		if (fp->type & QEDE_FASTPATH_TX) {
			for (tc = 0; tc < edev->num_tc; tc++) {
				struct qede_tx_queue *txq = &fp->txqs[tc];
3343

3344 3345 3346 3347
				rc = qede_drain_txq(edev, txq, true);
				if (rc)
					return rc;
			}
3348 3349 3350
		}
	}

3351 3352
	/* Stop all Queues in reverse order */
	for (i = QEDE_QUEUE_CNT(edev) - 1; i >= 0; i--) {
3353 3354
		struct qed_stop_rxq_params rx_params;

3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369
		/* Stop the Tx Queue(s) */
		if (edev->fp_array[i].type & QEDE_FASTPATH_TX) {
			for (tc = 0; tc < edev->num_tc; tc++) {
				struct qed_stop_txq_params tx_params;
				u8 val;

				tx_params.rss_id = i;
				val = edev->fp_array[i].txqs[tc].index;
				tx_params.tx_queue_id = val;
				rc = edev->ops->q_tx_stop(cdev, &tx_params);
				if (rc) {
					DP_ERR(edev, "Failed to stop TXQ #%d\n",
					       tx_params.tx_queue_id);
					return rc;
				}
3370 3371 3372
			}
		}

3373 3374 3375 3376 3377
		/* Stop the Rx Queue */
		if (edev->fp_array[i].type & QEDE_FASTPATH_RX) {
			memset(&rx_params, 0, sizeof(rx_params));
			rx_params.rss_id = i;
			rx_params.rx_queue_id = edev->fp_array[i].rxq->rxq_id;
3378

3379 3380 3381 3382 3383
			rc = edev->ops->q_rx_stop(cdev, &rx_params);
			if (rc) {
				DP_ERR(edev, "Failed to stop RXQ #%d\n", i);
				return rc;
			}
3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394
		}
	}

	/* Stop the vport */
	rc = edev->ops->vport_stop(cdev, 0);
	if (rc)
		DP_ERR(edev, "Failed to stop VPORT\n");

	return rc;
}

3395
static int qede_start_queues(struct qede_dev *edev, bool clear_stats)
3396 3397
{
	int rc, tc, i;
3398
	int vlan_removal_en = 1;
3399 3400 3401
	struct qed_dev *cdev = edev->cdev;
	struct qed_update_vport_params vport_update_params;
	struct qed_queue_start_common_params q_params;
Y
Yuval Mintz 已提交
3402
	struct qed_dev_info *qed_info = &edev->dev_info.common;
3403
	struct qed_start_vport_params start = {0};
3404
	bool reset_rss_indir = false;
3405

3406
	if (!edev->num_queues) {
3407 3408 3409 3410 3411
		DP_ERR(edev,
		       "Cannot update V-VPORT as active as there are no Rx queues\n");
		return -EINVAL;
	}

3412
	start.gro_enable = !edev->gro_disable;
3413 3414 3415 3416
	start.mtu = edev->ndev->mtu;
	start.vport_id = 0;
	start.drop_ttl0 = true;
	start.remove_inner_vlan = vlan_removal_en;
3417
	start.clear_stats = clear_stats;
3418 3419

	rc = edev->ops->vport_start(cdev, &start);
3420 3421 3422 3423 3424 3425 3426 3427

	if (rc) {
		DP_ERR(edev, "Start V-PORT failed %d\n", rc);
		return rc;
	}

	DP_VERBOSE(edev, NETIF_MSG_IFUP,
		   "Start vport ramrod passed, vport_id = %d, MTU = %d, vlan_removal_en = %d\n",
3428
		   start.vport_id, edev->ndev->mtu + 0xe, vlan_removal_en);
3429

3430
	for_each_queue(i) {
3431
		struct qede_fastpath *fp = &edev->fp_array[i];
3432 3433
		dma_addr_t p_phys_table;
		u32 page_cnt;
3434

3435 3436 3437
		if (fp->type & QEDE_FASTPATH_RX) {
			struct qede_rx_queue *rxq = fp->rxq;
			__le16 *val;
3438

3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469
			memset(&q_params, 0, sizeof(q_params));
			q_params.rss_id = i;
			q_params.queue_id = rxq->rxq_id;
			q_params.vport_id = 0;
			q_params.sb = fp->sb_info->igu_sb_id;
			q_params.sb_idx = RX_PI;

			p_phys_table =
			    qed_chain_get_pbl_phys(&rxq->rx_comp_ring);
			page_cnt = qed_chain_get_page_cnt(&rxq->rx_comp_ring);

			rc = edev->ops->q_rx_start(cdev, &q_params,
						   rxq->rx_buf_size,
						   rxq->rx_bd_ring.p_phys_addr,
						   p_phys_table,
						   page_cnt,
						   &rxq->hw_rxq_prod_addr);
			if (rc) {
				DP_ERR(edev, "Start RXQ #%d failed %d\n", i,
				       rc);
				return rc;
			}

			val = &fp->sb_info->sb_virt->pi_array[RX_PI];
			rxq->hw_cons_ptr = val;

			qede_update_rx_prod(edev, rxq);
		}

		if (!(fp->type & QEDE_FASTPATH_TX))
			continue;
3470 3471 3472

		for (tc = 0; tc < edev->num_tc; tc++) {
			struct qede_tx_queue *txq = &fp->txqs[tc];
3473 3474 3475

			p_phys_table = qed_chain_get_pbl_phys(&txq->tx_pbl);
			page_cnt = qed_chain_get_page_cnt(&txq->tx_pbl);
3476 3477 3478

			memset(&q_params, 0, sizeof(q_params));
			q_params.rss_id = i;
3479
			q_params.queue_id = txq->index;
3480 3481 3482 3483 3484
			q_params.vport_id = 0;
			q_params.sb = fp->sb_info->igu_sb_id;
			q_params.sb_idx = TX_PI(tc);

			rc = edev->ops->q_tx_start(cdev, &q_params,
3485
						   p_phys_table, page_cnt,
3486 3487 3488
						   &txq->doorbell_addr);
			if (rc) {
				DP_ERR(edev, "Start TXQ #%d failed %d\n",
3489
				       txq->index, rc);
3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508
				return rc;
			}

			txq->hw_cons_ptr =
				&fp->sb_info->sb_virt->pi_array[TX_PI(tc)];
			SET_FIELD(txq->tx_db.data.params,
				  ETH_DB_DATA_DEST, DB_DEST_XCM);
			SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_CMD,
				  DB_AGG_CMD_SET);
			SET_FIELD(txq->tx_db.data.params,
				  ETH_DB_DATA_AGG_VAL_SEL,
				  DQ_XCM_ETH_TX_BD_PROD_CMD);

			txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD;
		}
	}

	/* Prepare and send the vport enable */
	memset(&vport_update_params, 0, sizeof(vport_update_params));
3509
	vport_update_params.vport_id = start.vport_id;
3510 3511 3512
	vport_update_params.update_vport_active_flg = 1;
	vport_update_params.vport_active_flg = 1;

Y
Yuval Mintz 已提交
3513 3514 3515 3516 3517 3518
	if ((qed_info->mf_mode == QED_MF_NPAR || pci_num_vf(edev->pdev)) &&
	    qed_info->tx_switching) {
		vport_update_params.update_tx_switching_flg = 1;
		vport_update_params.tx_switching_flg = 1;
	}

3519
	/* Fill struct with RSS params */
3520
	if (QEDE_RSS_COUNT(edev) > 1) {
3521
		vport_update_params.update_rss_flg = 1;
3522 3523 3524 3525

		/* Need to validate current RSS config uses valid entries */
		for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
			if (edev->rss_params.rss_ind_table[i] >=
3526
			    QEDE_RSS_COUNT(edev)) {
3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538
				reset_rss_indir = true;
				break;
			}
		}

		if (!(edev->rss_params_inited & QEDE_RSS_INDIR_INITED) ||
		    reset_rss_indir) {
			u16 val;

			for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
				u16 indir_val;

3539
				val = QEDE_RSS_COUNT(edev);
3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561
				indir_val = ethtool_rxfh_indir_default(i, val);
				edev->rss_params.rss_ind_table[i] = indir_val;
			}
			edev->rss_params_inited |= QEDE_RSS_INDIR_INITED;
		}

		if (!(edev->rss_params_inited & QEDE_RSS_KEY_INITED)) {
			netdev_rss_key_fill(edev->rss_params.rss_key,
					    sizeof(edev->rss_params.rss_key));
			edev->rss_params_inited |= QEDE_RSS_KEY_INITED;
		}

		if (!(edev->rss_params_inited & QEDE_RSS_CAPS_INITED)) {
			edev->rss_params.rss_caps = QED_RSS_IPV4 |
						    QED_RSS_IPV6 |
						    QED_RSS_IPV4_TCP |
						    QED_RSS_IPV6_TCP;
			edev->rss_params_inited |= QEDE_RSS_CAPS_INITED;
		}

		memcpy(&vport_update_params.rss_params, &edev->rss_params,
		       sizeof(vport_update_params.rss_params));
3562
	} else {
3563 3564
		memset(&vport_update_params.rss_params, 0,
		       sizeof(vport_update_params.rss_params));
3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575
	}

	rc = edev->ops->vport_update(cdev, &vport_update_params);
	if (rc) {
		DP_ERR(edev, "Update V-PORT failed %d\n", rc);
		return rc;
	}

	return 0;
}

3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593
static int qede_set_mcast_rx_mac(struct qede_dev *edev,
				 enum qed_filter_xcast_params_type opcode,
				 unsigned char *mac, int num_macs)
{
	struct qed_filter_params filter_cmd;
	int i;

	memset(&filter_cmd, 0, sizeof(filter_cmd));
	filter_cmd.type = QED_FILTER_TYPE_MCAST;
	filter_cmd.filter.mcast.type = opcode;
	filter_cmd.filter.mcast.num = num_macs;

	for (i = 0; i < num_macs; i++, mac += ETH_ALEN)
		ether_addr_copy(filter_cmd.filter.mcast.mac[i], mac);

	return edev->ops->filter_config(edev->cdev, &filter_cmd);
}

3594 3595 3596 3597 3598 3599
enum qede_unload_mode {
	QEDE_UNLOAD_NORMAL,
};

static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode)
{
S
Sudarsana Kalluru 已提交
3600
	struct qed_link_params link_params;
3601 3602 3603 3604
	int rc;

	DP_INFO(edev, "Starting qede unload\n");

R
Ram Amrani 已提交
3605
	qede_roce_dev_event_close(edev);
3606 3607 3608
	mutex_lock(&edev->qede_lock);
	edev->state = QEDE_STATE_CLOSED;

3609 3610 3611 3612
	/* Close OS Tx */
	netif_tx_disable(edev->ndev);
	netif_carrier_off(edev->ndev);

S
Sudarsana Kalluru 已提交
3613 3614 3615 3616
	/* Reset the link */
	memset(&link_params, 0, sizeof(link_params));
	link_params.link_up = false;
	edev->ops->common->set_link(edev->cdev, &link_params);
3617 3618 3619 3620 3621 3622 3623 3624
	rc = qede_stop_queues(edev);
	if (rc) {
		qede_sync_free_irqs(edev);
		goto out;
	}

	DP_INFO(edev, "Stopped Queues\n");

3625
	qede_vlan_mark_nonconfigured(edev);
3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643
	edev->ops->fastpath_stop(edev->cdev);

	/* Release the interrupts */
	qede_sync_free_irqs(edev);
	edev->ops->common->set_fp_int(edev->cdev, 0);

	qede_napi_disable_remove(edev);

	qede_free_mem_load(edev);
	qede_free_fp_array(edev);

out:
	mutex_unlock(&edev->qede_lock);
	DP_INFO(edev, "Ending qede unload\n");
}

enum qede_load_mode {
	QEDE_LOAD_NORMAL,
3644
	QEDE_LOAD_RELOAD,
3645 3646 3647 3648
};

static int qede_load(struct qede_dev *edev, enum qede_load_mode mode)
{
S
Sudarsana Kalluru 已提交
3649 3650
	struct qed_link_params link_params;
	struct qed_link_output link_output;
3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668
	int rc;

	DP_INFO(edev, "Starting qede load\n");

	rc = qede_set_num_queues(edev);
	if (rc)
		goto err0;

	rc = qede_alloc_fp_array(edev);
	if (rc)
		goto err0;

	qede_init_fp(edev);

	rc = qede_alloc_mem_load(edev);
	if (rc)
		goto err1;
	DP_INFO(edev, "Allocated %d RSS queues on %d TC/s\n",
3669
		QEDE_QUEUE_CNT(edev), edev->num_tc);
3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682

	rc = qede_set_real_num_queues(edev);
	if (rc)
		goto err2;

	qede_napi_add_enable(edev);
	DP_INFO(edev, "Napi added and enabled\n");

	rc = qede_setup_irqs(edev);
	if (rc)
		goto err3;
	DP_INFO(edev, "Setup IRQs succeeded\n");

3683
	rc = qede_start_queues(edev, mode != QEDE_LOAD_RELOAD);
3684 3685 3686 3687 3688 3689 3690
	if (rc)
		goto err4;
	DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n");

	/* Add primary mac and set Rx filters */
	ether_addr_copy(edev->primary_mac, edev->ndev->dev_addr);

3691 3692 3693
	mutex_lock(&edev->qede_lock);
	edev->state = QEDE_STATE_OPEN;
	mutex_unlock(&edev->qede_lock);
S
Sudarsana Kalluru 已提交
3694

3695 3696 3697
	/* Program un-configured VLANs */
	qede_configure_vlan_filters(edev);

S
Sudarsana Kalluru 已提交
3698 3699 3700 3701 3702 3703 3704 3705
	/* Ask for link-up using current configuration */
	memset(&link_params, 0, sizeof(link_params));
	link_params.link_up = true;
	edev->ops->common->set_link(edev->cdev, &link_params);

	/* Query whether link is already-up */
	memset(&link_output, 0, sizeof(link_output));
	edev->ops->common->get_link(edev->cdev, &link_output);
R
Ram Amrani 已提交
3706
	qede_roce_dev_event_open(edev);
S
Sudarsana Kalluru 已提交
3707 3708
	qede_link_update(edev, &link_output);

3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722
	DP_INFO(edev, "Ending successfully qede load\n");

	return 0;

err4:
	qede_sync_free_irqs(edev);
	memset(&edev->int_info.msix_cnt, 0, sizeof(struct qed_int_info));
err3:
	qede_napi_disable_remove(edev);
err2:
	qede_free_mem_load(edev);
err1:
	edev->ops->common->set_fp_int(edev->cdev, 0);
	qede_free_fp_array(edev);
3723 3724 3725
	edev->num_queues = 0;
	edev->fp_num_tx = 0;
	edev->fp_num_rx = 0;
3726 3727 3728 3729
err0:
	return rc;
}

3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740
void qede_reload(struct qede_dev *edev,
		 void (*func)(struct qede_dev *, union qede_reload_args *),
		 union qede_reload_args *args)
{
	qede_unload(edev, QEDE_UNLOAD_NORMAL);
	/* Call function handler to update parameters
	 * needed for function load.
	 */
	if (func)
		func(edev, args);

3741
	qede_load(edev, QEDE_LOAD_RELOAD);
3742 3743 3744 3745 3746 3747

	mutex_lock(&edev->qede_lock);
	qede_config_rx_mode(edev->ndev);
	mutex_unlock(&edev->qede_lock);
}

3748 3749 3750 3751
/* called with rtnl_lock */
static int qede_open(struct net_device *ndev)
{
	struct qede_dev *edev = netdev_priv(ndev);
3752
	int rc;
3753 3754 3755 3756 3757

	netif_carrier_off(ndev);

	edev->ops->common->set_power_state(edev->cdev, PCI_D0);

3758 3759 3760 3761 3762
	rc = qede_load(edev, QEDE_LOAD_NORMAL);

	if (rc)
		return rc;

3763 3764
	udp_tunnel_get_rx_info(ndev);

3765 3766
	edev->ops->common->update_drv_state(edev->cdev, true);

3767
	return 0;
3768 3769 3770 3771 3772 3773 3774 3775
}

static int qede_close(struct net_device *ndev)
{
	struct qede_dev *edev = netdev_priv(ndev);

	qede_unload(edev, QEDE_UNLOAD_NORMAL);

3776 3777
	edev->ops->common->update_drv_state(edev->cdev, false);

3778 3779
	return 0;
}
3780

S
Sudarsana Kalluru 已提交
3781 3782 3783 3784 3785 3786 3787 3788 3789 3790
static void qede_link_update(void *dev, struct qed_link_output *link)
{
	struct qede_dev *edev = dev;

	if (!netif_running(edev->ndev)) {
		DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not running\n");
		return;
	}

	if (link->link_up) {
3791 3792 3793 3794 3795
		if (!netif_carrier_ok(edev->ndev)) {
			DP_NOTICE(edev, "Link is up\n");
			netif_tx_start_all_queues(edev->ndev);
			netif_carrier_on(edev->ndev);
		}
S
Sudarsana Kalluru 已提交
3796
	} else {
3797 3798 3799 3800 3801
		if (netif_carrier_ok(edev->ndev)) {
			DP_NOTICE(edev, "Link is down\n");
			netif_tx_disable(edev->ndev);
			netif_carrier_off(edev->ndev);
		}
S
Sudarsana Kalluru 已提交
3802 3803 3804
	}
}

3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819
static int qede_set_mac_addr(struct net_device *ndev, void *p)
{
	struct qede_dev *edev = netdev_priv(ndev);
	struct sockaddr *addr = p;
	int rc;

	ASSERT_RTNL(); /* @@@TBD To be removed */

	DP_INFO(edev, "Set_mac_addr called\n");

	if (!is_valid_ether_addr(addr->sa_data)) {
		DP_NOTICE(edev, "The MAC address is not valid\n");
		return -EFAULT;
	}

Y
Yuval Mintz 已提交
3820 3821 3822 3823 3824
	if (!edev->ops->check_mac(edev->cdev, addr->sa_data)) {
		DP_NOTICE(edev, "qed prevents setting MAC\n");
		return -EINVAL;
	}

3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837
	ether_addr_copy(ndev->dev_addr, addr->sa_data);

	if (!netif_running(ndev))  {
		DP_NOTICE(edev, "The device is currently down\n");
		return 0;
	}

	/* Remove the previous primary mac */
	rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL,
				   edev->primary_mac);
	if (rc)
		return rc;

3838 3839
	edev->ops->common->update_mac(edev->cdev, addr->sa_data);

3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961
	/* Add MAC filter according to the new unicast HW MAC address */
	ether_addr_copy(edev->primary_mac, ndev->dev_addr);
	return qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD,
				      edev->primary_mac);
}

static int
qede_configure_mcast_filtering(struct net_device *ndev,
			       enum qed_filter_rx_mode_type *accept_flags)
{
	struct qede_dev *edev = netdev_priv(ndev);
	unsigned char *mc_macs, *temp;
	struct netdev_hw_addr *ha;
	int rc = 0, mc_count;
	size_t size;

	size = 64 * ETH_ALEN;

	mc_macs = kzalloc(size, GFP_KERNEL);
	if (!mc_macs) {
		DP_NOTICE(edev,
			  "Failed to allocate memory for multicast MACs\n");
		rc = -ENOMEM;
		goto exit;
	}

	temp = mc_macs;

	/* Remove all previously configured MAC filters */
	rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL,
				   mc_macs, 1);
	if (rc)
		goto exit;

	netif_addr_lock_bh(ndev);

	mc_count = netdev_mc_count(ndev);
	if (mc_count < 64) {
		netdev_for_each_mc_addr(ha, ndev) {
			ether_addr_copy(temp, ha->addr);
			temp += ETH_ALEN;
		}
	}

	netif_addr_unlock_bh(ndev);

	/* Check for all multicast @@@TBD resource allocation */
	if ((ndev->flags & IFF_ALLMULTI) ||
	    (mc_count > 64)) {
		if (*accept_flags == QED_FILTER_RX_MODE_TYPE_REGULAR)
			*accept_flags = QED_FILTER_RX_MODE_TYPE_MULTI_PROMISC;
	} else {
		/* Add all multicast MAC filters */
		rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD,
					   mc_macs, mc_count);
	}

exit:
	kfree(mc_macs);
	return rc;
}

static void qede_set_rx_mode(struct net_device *ndev)
{
	struct qede_dev *edev = netdev_priv(ndev);

	DP_INFO(edev, "qede_set_rx_mode called\n");

	if (edev->state != QEDE_STATE_OPEN) {
		DP_INFO(edev,
			"qede_set_rx_mode called while interface is down\n");
	} else {
		set_bit(QEDE_SP_RX_MODE, &edev->sp_flags);
		schedule_delayed_work(&edev->sp_task, 0);
	}
}

/* Must be called with qede_lock held */
static void qede_config_rx_mode(struct net_device *ndev)
{
	enum qed_filter_rx_mode_type accept_flags = QED_FILTER_TYPE_UCAST;
	struct qede_dev *edev = netdev_priv(ndev);
	struct qed_filter_params rx_mode;
	unsigned char *uc_macs, *temp;
	struct netdev_hw_addr *ha;
	int rc, uc_count;
	size_t size;

	netif_addr_lock_bh(ndev);

	uc_count = netdev_uc_count(ndev);
	size = uc_count * ETH_ALEN;

	uc_macs = kzalloc(size, GFP_ATOMIC);
	if (!uc_macs) {
		DP_NOTICE(edev, "Failed to allocate memory for unicast MACs\n");
		netif_addr_unlock_bh(ndev);
		return;
	}

	temp = uc_macs;
	netdev_for_each_uc_addr(ha, ndev) {
		ether_addr_copy(temp, ha->addr);
		temp += ETH_ALEN;
	}

	netif_addr_unlock_bh(ndev);

	/* Configure the struct for the Rx mode */
	memset(&rx_mode, 0, sizeof(struct qed_filter_params));
	rx_mode.type = QED_FILTER_TYPE_RX_MODE;

	/* Remove all previous unicast secondary macs and multicast macs
	 * (configrue / leave the primary mac)
	 */
	rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_REPLACE,
				   edev->primary_mac);
	if (rc)
		goto out;

	/* Check for promiscuous */
	if ((ndev->flags & IFF_PROMISC) ||
Y
Yuval Mintz 已提交
3962
	    (uc_count > edev->dev_info.num_mac_filters - 1)) {
3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983
		accept_flags = QED_FILTER_RX_MODE_TYPE_PROMISC;
	} else {
		/* Add MAC filters according to the unicast secondary macs */
		int i;

		temp = uc_macs;
		for (i = 0; i < uc_count; i++) {
			rc = qede_set_ucast_rx_mac(edev,
						   QED_FILTER_XCAST_TYPE_ADD,
						   temp);
			if (rc)
				goto out;

			temp += ETH_ALEN;
		}

		rc = qede_configure_mcast_filtering(ndev, &accept_flags);
		if (rc)
			goto out;
	}

3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994
	/* take care of VLAN mode */
	if (ndev->flags & IFF_PROMISC) {
		qede_config_accept_any_vlan(edev, true);
	} else if (!edev->non_configured_vlans) {
		/* It's possible that accept_any_vlan mode is set due to a
		 * previous setting of IFF_PROMISC. If vlan credits are
		 * sufficient, disable accept_any_vlan.
		 */
		qede_config_accept_any_vlan(edev, false);
	}

3995 3996 3997 3998 3999
	rx_mode.filter.accept_flags = accept_flags;
	edev->ops->filter_config(edev->cdev, &rx_mode);
out:
	kfree(uc_macs);
}