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Release 4.11 drivers/net/ethernet/cisco/enic/enic.h

/*
 * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
 *
 * This program is free software; you may redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#ifndef _ENIC_H_

#define _ENIC_H_

#include "vnic_enet.h"
#include "vnic_dev.h"
#include "vnic_wq.h"
#include "vnic_rq.h"
#include "vnic_cq.h"
#include "vnic_intr.h"
#include "vnic_stats.h"
#include "vnic_nic.h"
#include "vnic_rss.h"
#include <linux/irq.h>


#define DRV_NAME		"enic"

#define DRV_DESCRIPTION		"Cisco VIC Ethernet NIC Driver"

#define DRV_VERSION		"2.3.0.31"

#define DRV_COPYRIGHT		"Copyright 2008-2013 Cisco Systems, Inc"


#define ENIC_BARS_MAX		6


#define ENIC_WQ_MAX		8

#define ENIC_RQ_MAX		8

#define ENIC_CQ_MAX		(ENIC_WQ_MAX + ENIC_RQ_MAX)

#define ENIC_INTR_MAX		(ENIC_CQ_MAX + 2)


#define ENIC_AIC_LARGE_PKT_DIFF	3


struct enic_msix_entry {
	
int requested;
	
char devname[IFNAMSIZ];
	
irqreturn_t (*isr)(int, void *);
	
void *devid;
	
cpumask_var_t affinity_mask;
};

/* Store only the lower range.  Higher range is given by fw. */

struct enic_intr_mod_range {
	
u32 small_pkt_range_start;
	
u32 large_pkt_range_start;
};


struct enic_intr_mod_table {
	
u32 rx_rate;
	
u32 range_percent;
};


#define ENIC_MAX_LINK_SPEEDS		3

#define ENIC_LINK_SPEED_10G		10000

#define ENIC_LINK_SPEED_4G		4000

#define ENIC_LINK_40G_INDEX		2

#define ENIC_LINK_10G_INDEX		1

#define ENIC_LINK_4G_INDEX		0

#define ENIC_RX_COALESCE_RANGE_END	125

#define ENIC_AIC_TS_BREAK		100


struct enic_rx_coal {
	
u32 small_pkt_range_start;
	
u32 large_pkt_range_start;
	
u32 range_end;
	
u32 use_adaptive_rx_coalesce;
};

/* priv_flags */

#define ENIC_SRIOV_ENABLED		(1 << 0)

/* enic port profile set flags */

#define ENIC_PORT_REQUEST_APPLIED	(1 << 0)

#define ENIC_SET_REQUEST		(1 << 1)

#define ENIC_SET_NAME			(1 << 2)

#define ENIC_SET_INSTANCE		(1 << 3)

#define ENIC_SET_HOST			(1 << 4)


struct enic_port_profile {
	
u32 set;
	
u8 request;
	
char name[PORT_PROFILE_MAX];
	
u8 instance_uuid[PORT_UUID_MAX];
	
u8 host_uuid[PORT_UUID_MAX];
	
u8 vf_mac[ETH_ALEN];
	
u8 mac_addr[ETH_ALEN];
};

/* enic_rfs_fltr_node - rfs filter node in hash table
 *      @@keys: IPv4 5 tuple
 *      @flow_id: flow_id of clsf filter provided by kernel
 *      @fltr_id: filter id of clsf filter returned by adaptor
 *      @rq_id: desired rq index
 *      @node: hlist_node
 */

struct enic_rfs_fltr_node {
	
struct flow_keys keys;
	
u32 flow_id;
	
u16 fltr_id;
	
u16 rq_id;
	
struct hlist_node node;
};

/* enic_rfs_flw_tbl - rfs flow table
 *      @max: Maximum number of filters vNIC supports
 *      @free: Number of free filters available
 *      @toclean: hash table index to clean next
 *      @ht_head: hash table list head
 *      @lock: spin lock
 *      @rfs_may_expire: timer function for enic_rps_may_expire_flow
 */

struct enic_rfs_flw_tbl {
	
u16 max;
	
int free;


#define ENIC_RFS_FLW_BITSHIFT	(10)

#define ENIC_RFS_FLW_MASK	((1 << ENIC_RFS_FLW_BITSHIFT) - 1)
	
u16 toclean:ENIC_RFS_FLW_BITSHIFT;
	
struct hlist_head ht_head[1 << ENIC_RFS_FLW_BITSHIFT];
	
spinlock_t lock;
	
struct timer_list rfs_may_expire;
};


struct vxlan_offload {
	
u16 vxlan_udp_port_number;
	
u8 patch_level;
};

/* Per-instance private data structure */

struct enic {
	
struct net_device *netdev;
	
struct pci_dev *pdev;
	
struct vnic_enet_config config;
	
struct vnic_dev_bar bar[ENIC_BARS_MAX];
	
struct vnic_dev *vdev;
	
struct timer_list notify_timer;
	
struct work_struct reset;
	
struct work_struct tx_hang_reset;
	
struct work_struct change_mtu_work;
	
struct msix_entry msix_entry[ENIC_INTR_MAX];
	
struct enic_msix_entry msix[ENIC_INTR_MAX];
	
u32 msg_enable;
	
spinlock_t devcmd_lock;
	
u8 mac_addr[ETH_ALEN];
	
unsigned int flags;
	
unsigned int priv_flags;
	
unsigned int mc_count;
	
unsigned int uc_count;
	
u32 port_mtu;
	
struct enic_rx_coal rx_coalesce_setting;
	
u32 rx_coalesce_usecs;
	
u32 tx_coalesce_usecs;
#ifdef CONFIG_PCI_IOV
	
u16 num_vfs;
#endif
	
spinlock_t enic_api_lock;
	
struct enic_port_profile *pp;

	/* work queue cache line section */
	
____cacheline_aligned struct vnic_wq wq[ENIC_WQ_MAX];
	
spinlock_t wq_lock[ENIC_WQ_MAX];
	
unsigned int wq_count;
	
u16 loop_enable;
	
u16 loop_tag;

	/* receive queue cache line section */
	
____cacheline_aligned struct vnic_rq rq[ENIC_RQ_MAX];
	
unsigned int rq_count;
	
struct vxlan_offload vxlan;
	
u64 rq_truncated_pkts;
	
u64 rq_bad_fcs;
	
struct napi_struct napi[ENIC_RQ_MAX + ENIC_WQ_MAX];

	/* interrupt resource cache line section */
	
____cacheline_aligned struct vnic_intr intr[ENIC_INTR_MAX];
	
unsigned int intr_count;
	
u32 __iomem *legacy_pba;		/* memory-mapped */

	/* completion queue cache line section */
	
____cacheline_aligned struct vnic_cq cq[ENIC_CQ_MAX];
	
unsigned int cq_count;
	
struct enic_rfs_flw_tbl rfs_h;
	
u32 rx_copybreak;
	
u8 rss_key[ENIC_RSS_LEN];
	
struct vnic_gen_stats gen_stats;
};


static inline struct net_device *vnic_get_netdev(struct vnic_dev *vdev) { struct enic *enic = vdev->priv; return enic->netdev; }

Contributors

PersonTokensPropCommitsCommitProp
Govindarajulu Varadarajan28100.00%1100.00%
Total28100.00%1100.00%

/* wrappers function for kernel log */ #define vdev_err(vdev, fmt, ...) \ dev_err(&(vdev)->pdev->dev, fmt, ##__VA_ARGS__) #define vdev_warn(vdev, fmt, ...) \ dev_warn(&(vdev)->pdev->dev, fmt, ##__VA_ARGS__) #define vdev_info(vdev, fmt, ...) \ dev_info(&(vdev)->pdev->dev, fmt, ##__VA_ARGS__) #define vdev_neterr(vdev, fmt, ...) \ netdev_err(vnic_get_netdev(vdev), fmt, ##__VA_ARGS__) #define vdev_netwarn(vdev, fmt, ...) \ netdev_warn(vnic_get_netdev(vdev), fmt, ##__VA_ARGS__) #define vdev_netinfo(vdev, fmt, ...) \ netdev_info(vnic_get_netdev(vdev), fmt, ##__VA_ARGS__)
static inline struct device *enic_get_dev(struct enic *enic) { return &(enic->pdev->dev); }

Contributors

PersonTokensPropCommitsCommitProp
Vasanthy Kolluri24100.00%1100.00%
Total24100.00%1100.00%


static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq) { return rq; }

Contributors

PersonTokensPropCommitsCommitProp
Neel Patel20100.00%1100.00%
Total20100.00%1100.00%


static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq) { return enic->rq_count + wq; }

Contributors

PersonTokensPropCommitsCommitProp
Neel Patel24100.00%1100.00%
Total24100.00%1100.00%


static inline unsigned int enic_legacy_io_intr(void) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Neel Patel13100.00%1100.00%
Total13100.00%1100.00%


static inline unsigned int enic_legacy_err_intr(void) { return 1; }

Contributors

PersonTokensPropCommitsCommitProp
Neel Patel13100.00%1100.00%
Total13100.00%1100.00%


static inline unsigned int enic_legacy_notify_intr(void) { return 2; }

Contributors

PersonTokensPropCommitsCommitProp
Neel Patel13100.00%1100.00%
Total13100.00%1100.00%


static inline unsigned int enic_msix_rq_intr(struct enic *enic, unsigned int rq) { return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset; }

Contributors

PersonTokensPropCommitsCommitProp
Neel Patel32100.00%1100.00%
Total32100.00%1100.00%


static inline unsigned int enic_msix_wq_intr(struct enic *enic, unsigned int wq) { return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset; }

Contributors

PersonTokensPropCommitsCommitProp
Neel Patel32100.00%1100.00%
Total32100.00%1100.00%


static inline unsigned int enic_msix_err_intr(struct enic *enic) { return enic->rq_count + enic->wq_count; }

Contributors

PersonTokensPropCommitsCommitProp
Neel Patel22100.00%1100.00%
Total22100.00%1100.00%


static inline unsigned int enic_msix_notify_intr(struct enic *enic) { return enic->rq_count + enic->wq_count + 1; }

Contributors

PersonTokensPropCommitsCommitProp
Neel Patel24100.00%1100.00%
Total24100.00%1100.00%


static inline bool enic_is_err_intr(struct enic *enic, int intr) { switch (vnic_dev_get_intr_mode(enic->vdev)) { case VNIC_DEV_INTR_MODE_INTX: return intr == enic_legacy_err_intr(); case VNIC_DEV_INTR_MODE_MSIX: return intr == enic_msix_err_intr(enic); case VNIC_DEV_INTR_MODE_MSI: default: return false; } }

Contributors

PersonTokensPropCommitsCommitProp
Govindarajulu Varadarajan53100.00%1100.00%
Total53100.00%1100.00%


static inline bool enic_is_notify_intr(struct enic *enic, int intr) { switch (vnic_dev_get_intr_mode(enic->vdev)) { case VNIC_DEV_INTR_MODE_INTX: return intr == enic_legacy_notify_intr(); case VNIC_DEV_INTR_MODE_MSIX: return intr == enic_msix_notify_intr(enic); case VNIC_DEV_INTR_MODE_MSI: default: return false; } }

Contributors

PersonTokensPropCommitsCommitProp
Govindarajulu Varadarajan53100.00%1100.00%
Total53100.00%1100.00%


static inline int enic_dma_map_check(struct enic *enic, dma_addr_t dma_addr) { if (unlikely(pci_dma_mapping_error(enic->pdev, dma_addr))) { net_warn_ratelimited("%s: PCI dma mapping failed!\n", enic->netdev->name); enic->gen_stats.dma_map_error++; return -ENOMEM; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Govindarajulu Varadarajan56100.00%2100.00%
Total56100.00%2100.00%

void enic_reset_addr_lists(struct enic *enic); int enic_sriov_enabled(struct enic *enic); int enic_is_valid_vf(struct enic *enic, int vf); int enic_is_dynamic(struct enic *enic); void enic_set_ethtool_ops(struct net_device *netdev); int __enic_set_rsskey(struct enic *enic); #endif /* _ENIC_H_ */

Overall Contributors

PersonTokensPropCommitsCommitProp
Govindarajulu Varadarajan33730.95%1125.58%
Scott Feldman30127.64%920.93%
Neel Patel20719.01%49.30%
Sujith Sankar807.35%12.33%
Roopa Prabhu787.16%920.93%
Joe Perches413.76%12.33%
Vasanthy Kolluri403.67%511.63%
Josh Boyer30.28%12.33%
Dan Carpenter10.09%12.33%
govindarajulu.v10.09%12.33%
Total1089100.00%43100.00%
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