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linux/drivers/net/ethernet/intel/i40evf/i40evf.h
Mitch Williams 00e5ec4bcc i40evf: support packet split receive 
Support packet split receive on VFs. This is off by default but can be
enabled using ethtool private flags. Because we need to trigger a reset
from outside of i40evf_main.c, create a new function to do so, and
export it.

Also update copyright year in file headers.

Change-ID: I721aa5d70113d3d6d94102e5f31526f6fc57cbbb
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-02-17 22:22:58 -08:00

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/*******************************************************************************
*
* Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
* Copyright(c) 2013 - 2016 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
******************************************************************************/
#ifndef _I40EVF_H_
#define _I40EVF_H_
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/aer.h>
#include <linux/netdevice.h>
#include <linux/vmalloc.h>
#include <linux/interrupt.h>
#include <linux/ethtool.h>
#include <linux/if_vlan.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/sctp.h>
#include <linux/ipv6.h>
#include <net/ip6_checksum.h>
#include <net/udp.h>
#include "i40e_type.h"
#include "i40e_virtchnl.h"
#include "i40e_txrx.h"
#define DEFAULT_DEBUG_LEVEL_SHIFT 3
#define PFX "i40evf: "
/* dummy struct to make common code less painful */
struct i40e_vsi {
struct i40evf_adapter *back;
struct net_device *netdev;
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
u16 seid;
u16 id;
unsigned long state;
int base_vector;
u16 work_limit;
/* high bit set means dynamic, use accessor routines to read/write.
* hardware only supports 2us resolution for the ITR registers.
* these values always store the USER setting, and must be converted
* before programming to a register.
*/
u16 rx_itr_setting;
u16 tx_itr_setting;
u16 qs_handle;
u8 *rss_hkey_user; /* User configured hash keys */
u8 *rss_lut_user; /* User configured lookup table entries */
};
/* How many Rx Buffers do we bundle into one write to the hardware ? */
#define I40EVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
#define I40EVF_DEFAULT_TXD 512
#define I40EVF_DEFAULT_RXD 512
#define I40EVF_MAX_TXD 4096
#define I40EVF_MIN_TXD 64
#define I40EVF_MAX_RXD 4096
#define I40EVF_MIN_RXD 64
#define I40EVF_REQ_DESCRIPTOR_MULTIPLE 32
/* Supported Rx Buffer Sizes */
#define I40EVF_RXBUFFER_64 64 /* Used for packet split */
#define I40EVF_RXBUFFER_128 128 /* Used for packet split */
#define I40EVF_RXBUFFER_256 256 /* Used for packet split */
#define I40EVF_RXBUFFER_2048 2048
#define I40EVF_MAX_RXBUFFER 16384 /* largest size for single descriptor */
#define I40EVF_MAX_AQ_BUF_SIZE 4096
#define I40EVF_AQ_LEN 32
#define I40EVF_AQ_MAX_ERR 20 /* times to try before resetting AQ */
#define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
#define I40E_RX_DESC(R, i) (&(((union i40e_32byte_rx_desc *)((R)->desc))[i]))
#define I40E_TX_DESC(R, i) (&(((struct i40e_tx_desc *)((R)->desc))[i]))
#define I40E_TX_CTXTDESC(R, i) \
(&(((struct i40e_tx_context_desc *)((R)->desc))[i]))
#define MAX_QUEUES 16
#define I40EVF_HKEY_ARRAY_SIZE ((I40E_VFQF_HKEY_MAX_INDEX + 1) * 4)
#define I40EVF_HLUT_ARRAY_SIZE ((I40E_VFQF_HLUT_MAX_INDEX + 1) * 4)
/* MAX_MSIX_Q_VECTORS of these are allocated,
* but we only use one per queue-specific vector.
*/
struct i40e_q_vector {
struct i40evf_adapter *adapter;
struct i40e_vsi *vsi;
struct napi_struct napi;
unsigned long reg_idx;
struct i40e_ring_container rx;
struct i40e_ring_container tx;
u32 ring_mask;
u8 num_ringpairs; /* total number of ring pairs in vector */
#define ITR_COUNTDOWN_START 100
u8 itr_countdown; /* when 0 or 1 update ITR */
int v_idx; /* vector index in list */
char name[IFNAMSIZ + 9];
bool arm_wb_state;
cpumask_var_t affinity_mask;
};
/* Helper macros to switch between ints/sec and what the register uses.
* And yes, it's the same math going both ways. The lowest value
* supported by all of the i40e hardware is 8.
*/
#define EITR_INTS_PER_SEC_TO_REG(_eitr) \
((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
#define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
#define I40EVF_DESC_UNUSED(R) \
((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
(R)->next_to_clean - (R)->next_to_use - 1)
#define I40EVF_RX_DESC_ADV(R, i) \
(&(((union i40e_adv_rx_desc *)((R).desc))[i]))
#define I40EVF_TX_DESC_ADV(R, i) \
(&(((union i40e_adv_tx_desc *)((R).desc))[i]))
#define I40EVF_TX_CTXTDESC_ADV(R, i) \
(&(((struct i40e_adv_tx_context_desc *)((R).desc))[i]))
#define OTHER_VECTOR 1
#define NONQ_VECS (OTHER_VECTOR)
#define MIN_MSIX_Q_VECTORS 1
#define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NONQ_VECS)
#define I40EVF_QUEUE_END_OF_LIST 0x7FF
#define I40EVF_FREE_VECTOR 0x7FFF
struct i40evf_mac_filter {
struct list_head list;
u8 macaddr[ETH_ALEN];
bool remove; /* filter needs to be removed */
bool add; /* filter needs to be added */
};
struct i40evf_vlan_filter {
struct list_head list;
u16 vlan;
bool remove; /* filter needs to be removed */
bool add; /* filter needs to be added */
};
/* Driver state. The order of these is important! */
enum i40evf_state_t {
__I40EVF_STARTUP, /* driver loaded, probe complete */
__I40EVF_REMOVE, /* driver is being unloaded */
__I40EVF_INIT_VERSION_CHECK, /* aq msg sent, awaiting reply */
__I40EVF_INIT_GET_RESOURCES, /* aq msg sent, awaiting reply */
__I40EVF_INIT_SW, /* got resources, setting up structs */
__I40EVF_RESETTING, /* in reset */
/* Below here, watchdog is running */
__I40EVF_DOWN, /* ready, can be opened */
__I40EVF_DOWN_PENDING, /* descending, waiting for watchdog */
__I40EVF_TESTING, /* in ethtool self-test */
__I40EVF_RUNNING, /* opened, working */
};
enum i40evf_critical_section_t {
__I40EVF_IN_CRITICAL_TASK, /* cannot be interrupted */
};
/* make common code happy */
#define __I40E_DOWN __I40EVF_DOWN
/* board specific private data structure */
struct i40evf_adapter {
struct timer_list watchdog_timer;
struct work_struct reset_task;
struct work_struct adminq_task;
struct delayed_work init_task;
struct i40e_q_vector *q_vectors;
struct list_head vlan_filter_list;
char misc_vector_name[IFNAMSIZ + 9];
int num_active_queues;
/* TX */
struct i40e_ring *tx_rings;
u32 tx_timeout_count;
struct list_head mac_filter_list;
u32 tx_desc_count;
/* RX */
struct i40e_ring *rx_rings;
u64 hw_csum_rx_error;
u32 rx_desc_count;
int num_msix_vectors;
struct msix_entry *msix_entries;
u32 flags;
#define I40EVF_FLAG_RX_CSUM_ENABLED BIT(0)
#define I40EVF_FLAG_RX_1BUF_CAPABLE BIT(1)
#define I40EVF_FLAG_RX_PS_CAPABLE BIT(2)
#define I40EVF_FLAG_RX_PS_ENABLED BIT(3)
#define I40EVF_FLAG_IMIR_ENABLED BIT(5)
#define I40EVF_FLAG_MQ_CAPABLE BIT(6)
#define I40EVF_FLAG_NEED_LINK_UPDATE BIT(7)
#define I40EVF_FLAG_PF_COMMS_FAILED BIT(8)
#define I40EVF_FLAG_RESET_PENDING BIT(9)
#define I40EVF_FLAG_RESET_NEEDED BIT(10)
#define I40EVF_FLAG_WB_ON_ITR_CAPABLE BIT(11)
#define I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE BIT(12)
#define I40EVF_FLAG_ADDR_SET_BY_PF BIT(13)
/* duplicates for common code */
#define I40E_FLAG_FDIR_ATR_ENABLED 0
#define I40E_FLAG_DCB_ENABLED 0
#define I40E_FLAG_RX_CSUM_ENABLED I40EVF_FLAG_RX_CSUM_ENABLED
#define I40E_FLAG_WB_ON_ITR_CAPABLE I40EVF_FLAG_WB_ON_ITR_CAPABLE
#define I40E_FLAG_OUTER_UDP_CSUM_CAPABLE I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE
/* flags for admin queue service task */
u32 aq_required;
#define I40EVF_FLAG_AQ_ENABLE_QUEUES BIT(0)
#define I40EVF_FLAG_AQ_DISABLE_QUEUES BIT(1)
#define I40EVF_FLAG_AQ_ADD_MAC_FILTER BIT(2)
#define I40EVF_FLAG_AQ_ADD_VLAN_FILTER BIT(3)
#define I40EVF_FLAG_AQ_DEL_MAC_FILTER BIT(4)
#define I40EVF_FLAG_AQ_DEL_VLAN_FILTER BIT(5)
#define I40EVF_FLAG_AQ_CONFIGURE_QUEUES BIT(6)
#define I40EVF_FLAG_AQ_MAP_VECTORS BIT(7)
#define I40EVF_FLAG_AQ_HANDLE_RESET BIT(8)
#define I40EVF_FLAG_AQ_CONFIGURE_RSS BIT(9)
#define I40EVF_FLAG_AQ_GET_CONFIG BIT(10)
/* OS defined structs */
struct net_device *netdev;
struct pci_dev *pdev;
struct net_device_stats net_stats;
struct i40e_hw hw; /* defined in i40e_type.h */
enum i40evf_state_t state;
unsigned long crit_section;
struct work_struct watchdog_task;
bool netdev_registered;
bool link_up;
enum i40e_virtchnl_ops current_op;
#define CLIENT_ENABLED(_a) ((_a)->vf_res->vf_offload_flags & \
I40E_VIRTCHNL_VF_OFFLOAD_IWARP)
#define RSS_AQ(_a) ((_a)->vf_res->vf_offload_flags & \
I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ)
#define VLAN_ALLOWED(_a) ((_a)->vf_res->vf_offload_flags & \
I40E_VIRTCHNL_VF_OFFLOAD_VLAN)
struct i40e_virtchnl_vf_resource *vf_res; /* incl. all VSIs */
struct i40e_virtchnl_vsi_resource *vsi_res; /* our LAN VSI */
struct i40e_virtchnl_version_info pf_version;
#define PF_IS_V11(_a) (((_a)->pf_version.major == 1) && \
((_a)->pf_version.minor == 1))
u16 msg_enable;
struct i40e_eth_stats current_stats;
struct i40e_vsi vsi;
u32 aq_wait_count;
};
/* Ethtool Private Flags */
#define I40EVF_PRIV_FLAGS_PS BIT(0)
/* needed by i40evf_ethtool.c */
extern char i40evf_driver_name[];
extern const char i40evf_driver_version[];
int i40evf_up(struct i40evf_adapter *adapter);
void i40evf_down(struct i40evf_adapter *adapter);
int i40evf_process_config(struct i40evf_adapter *adapter);
void i40evf_schedule_reset(struct i40evf_adapter *adapter);
void i40evf_reset(struct i40evf_adapter *adapter);
void i40evf_set_ethtool_ops(struct net_device *netdev);
void i40evf_update_stats(struct i40evf_adapter *adapter);
void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter);
int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter);
void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask);
void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter);
void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter);
void i40e_napi_add_all(struct i40evf_adapter *adapter);
void i40e_napi_del_all(struct i40evf_adapter *adapter);
int i40evf_send_api_ver(struct i40evf_adapter *adapter);
int i40evf_verify_api_ver(struct i40evf_adapter *adapter);
int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter);
int i40evf_get_vf_config(struct i40evf_adapter *adapter);
void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush);
void i40evf_configure_queues(struct i40evf_adapter *adapter);
void i40evf_deconfigure_queues(struct i40evf_adapter *adapter);
void i40evf_enable_queues(struct i40evf_adapter *adapter);
void i40evf_disable_queues(struct i40evf_adapter *adapter);
void i40evf_map_queues(struct i40evf_adapter *adapter);
void i40evf_add_ether_addrs(struct i40evf_adapter *adapter);
void i40evf_del_ether_addrs(struct i40evf_adapter *adapter);
void i40evf_add_vlans(struct i40evf_adapter *adapter);
void i40evf_del_vlans(struct i40evf_adapter *adapter);
void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags);
void i40evf_request_stats(struct i40evf_adapter *adapter);
void i40evf_request_reset(struct i40evf_adapter *adapter);
void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
enum i40e_virtchnl_ops v_opcode,
i40e_status v_retval, u8 *msg, u16 msglen);
int i40evf_config_rss(struct i40e_vsi *vsi, const u8 *seed, u8 *lut,
u16 lut_size);
int i40evf_get_rss(struct i40e_vsi *vsi, const u8 *seed, u8 *lut,
u16 lut_size);
#endif /* _I40EVF_H_ */
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