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numam-dpdk/drivers/net/enic/enic.h
Matan Azrad d5b0924ba6 ethdev: add return value to stats get dev op 
The stats_get dev op API doesn't include return value, so PMD cannot
return an error in case of failure at stats getting process time.

Since PCI devices can be removed and there is a time between the
physical removal to the RMV interrupt, the user may get invalid stats
without any indication.

This patch changes the stats_get API return value to be int instead of
void.

All the net PMDs stats_get dev ops are adjusted by this patch.

Signed-off-by: Matan Azrad <matan@mellanox.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-10-12 01:52:49 +01:00

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/*
* Copyright 2008-2014 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* Copyright (c) 2014, Cisco Systems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#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 "enic_res.h"
#include "cq_enet_desc.h"
#include <sys/queue.h>
#include <rte_spinlock.h>
#define DRV_NAME "enic_pmd"
#define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Poll-mode Driver"
#define DRV_COPYRIGHT "Copyright 2008-2015 Cisco Systems, Inc"
#define ENIC_WQ_MAX 8
/* With Rx scatter support, we use two RQs on VIC per RQ used by app. Both
* RQs use the same CQ.
*/
#define ENIC_RQ_MAX 16
#define ENIC_CQ_MAX (ENIC_WQ_MAX + (ENIC_RQ_MAX / 2))
#define ENIC_INTR_MAX (ENIC_CQ_MAX + 2)
#define ENIC_MAX_MAC_ADDR 64
#define VLAN_ETH_HLEN 18
#define ENICPMD_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
#define ENICPMD_BDF_LENGTH 13 /* 0000:00:00.0'\0' */
#define ENIC_CALC_IP_CKSUM 1
#define ENIC_CALC_TCP_UDP_CKSUM 2
#define ENIC_MAX_MTU 9000
#define ENIC_PAGE_SIZE 4096
#define PAGE_ROUND_UP(x) \
((((unsigned long)(x)) + ENIC_PAGE_SIZE-1) & (~(ENIC_PAGE_SIZE-1)))
#define ENICPMD_VFIO_PATH "/dev/vfio/vfio"
/*#define ENIC_DESC_COUNT_MAKE_ODD (x) do{if ((~(x)) & 1) { (x)--; } }while(0)*/
#define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */
#define PCI_DEVICE_ID_CISCO_VIC_ENET_VF 0x0071 /* enet SRIOV VF */
/* Special Filter id for non-specific packet flagging. Don't change value */
#define ENIC_MAGIC_FILTER_ID 0xffff
#define ENICPMD_FDIR_MAX 64
struct enic_fdir_node {
struct rte_eth_fdir_filter filter;
u16 fltr_id;
u16 rq_index;
};
struct enic_fdir {
struct rte_eth_fdir_stats stats;
struct rte_hash *hash;
struct enic_fdir_node *nodes[ENICPMD_FDIR_MAX];
u32 modes;
u32 types_mask;
void (*copy_fltr_fn)(struct filter_v2 *filt,
struct rte_eth_fdir_input *input,
struct rte_eth_fdir_masks *masks);
};
struct enic_soft_stats {
rte_atomic64_t rx_nombuf;
rte_atomic64_t rx_packet_errors;
rte_atomic64_t tx_oversized;
};
struct enic_memzone_entry {
const struct rte_memzone *rz;
LIST_ENTRY(enic_memzone_entry) entries;
};
struct rte_flow {
LIST_ENTRY(rte_flow) next;
u16 enic_filter_id;
struct filter_v2 enic_filter;
};
/* Per-instance private data structure */
struct enic {
struct enic *next;
struct rte_pci_device *pdev;
struct vnic_enet_config config;
struct vnic_dev_bar bar0;
struct vnic_dev *vdev;
unsigned int port_id;
struct rte_eth_dev *rte_dev;
struct enic_fdir fdir;
char bdf_name[ENICPMD_BDF_LENGTH];
int dev_fd;
int iommu_group_fd;
int iommu_groupid;
int eventfd;
uint8_t mac_addr[ETH_ALEN];
pthread_t err_intr_thread;
int promisc;
int allmulti;
u8 ig_vlan_strip_en;
int link_status;
u8 hw_ip_checksum;
u16 max_mtu;
u8 adv_filters;
u32 flow_filter_mode;
u8 filter_tags;
unsigned int flags;
unsigned int priv_flags;
/* work queue */
struct vnic_wq wq[ENIC_WQ_MAX];
unsigned int wq_count;
/* receive queue */
struct vnic_rq rq[ENIC_RQ_MAX];
unsigned int rq_count;
/* completion queue */
struct vnic_cq cq[ENIC_CQ_MAX];
unsigned int cq_count;
/* interrupt resource */
struct vnic_intr intr;
unsigned int intr_count;
/* software counters */
struct enic_soft_stats soft_stats;
/* configured resources on vic */
unsigned int conf_rq_count;
unsigned int conf_wq_count;
unsigned int conf_cq_count;
unsigned int conf_intr_count;
/* linked list storing memory allocations */
LIST_HEAD(enic_memzone_list, enic_memzone_entry) memzone_list;
rte_spinlock_t memzone_list_lock;
rte_spinlock_t mtu_lock;
LIST_HEAD(enic_flows, rte_flow) flows;
rte_spinlock_t flows_lock;
};
/* Get the CQ index from a Start of Packet(SOP) RQ index */
static inline unsigned int enic_sop_rq_idx_to_cq_idx(unsigned int sop_idx)
{
return sop_idx / 2;
}
/* Get the RTE RQ index from a Start of Packet(SOP) RQ index */
static inline unsigned int enic_sop_rq_idx_to_rte_idx(unsigned int sop_idx)
{
return sop_idx / 2;
}
/* Get the Start of Packet(SOP) RQ index from a RTE RQ index */
static inline unsigned int enic_rte_rq_idx_to_sop_idx(unsigned int rte_idx)
{
return rte_idx * 2;
}
/* Get the Data RQ index from a RTE RQ index */
static inline unsigned int enic_rte_rq_idx_to_data_idx(unsigned int rte_idx)
{
return rte_idx * 2 + 1;
}
static inline unsigned int enic_vnic_rq_count(struct enic *enic)
{
return enic->rq_count * 2;
}
static inline unsigned int enic_cq_rq(__rte_unused struct enic *enic, unsigned int rq)
{
/* Scatter rx uses two receive queues together with one
* completion queue, so the completion queue number is no
* longer the same as the rq number.
*/
return rq / 2;
}
static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
{
return enic->rq_count + wq;
}
static inline struct enic *pmd_priv(struct rte_eth_dev *eth_dev)
{
return (struct enic *)eth_dev->data->dev_private;
}
static inline uint32_t
enic_ring_add(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
{
uint32_t d = i0 + i1;
d -= (d >= n_descriptors) ? n_descriptors : 0;
return d;
}
static inline uint32_t
enic_ring_sub(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
{
int32_t d = i1 - i0;
return (uint32_t)((d < 0) ? ((int32_t)n_descriptors + d) : d);
}
static inline uint32_t
enic_ring_incr(uint32_t n_descriptors, uint32_t idx)
{
idx++;
if (unlikely(idx == n_descriptors))
idx = 0;
return idx;
}
extern void enic_fdir_stats_get(struct enic *enic,
struct rte_eth_fdir_stats *stats);
extern int enic_fdir_add_fltr(struct enic *enic,
struct rte_eth_fdir_filter *params);
extern int enic_fdir_del_fltr(struct enic *enic,
struct rte_eth_fdir_filter *params);
extern void enic_free_wq(void *txq);
extern int enic_alloc_intr_resources(struct enic *enic);
extern int enic_setup_finish(struct enic *enic);
extern int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
unsigned int socket_id, uint16_t nb_desc);
extern void enic_start_wq(struct enic *enic, uint16_t queue_idx);
extern int enic_stop_wq(struct enic *enic, uint16_t queue_idx);
extern void enic_start_rq(struct enic *enic, uint16_t queue_idx);
extern int enic_stop_rq(struct enic *enic, uint16_t queue_idx);
extern void enic_free_rq(void *rxq);
extern int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
unsigned int socket_id, struct rte_mempool *mp,
uint16_t nb_desc, uint16_t free_thresh);
extern int enic_set_rss_nic_cfg(struct enic *enic);
extern int enic_set_vnic_res(struct enic *enic);
extern void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size);
extern int enic_enable(struct enic *enic);
extern int enic_disable(struct enic *enic);
extern void enic_remove(struct enic *enic);
extern int enic_get_link_status(struct enic *enic);
extern int enic_dev_stats_get(struct enic *enic,
struct rte_eth_stats *r_stats);
extern void enic_dev_stats_clear(struct enic *enic);
extern void enic_add_packet_filter(struct enic *enic);
int enic_set_mac_address(struct enic *enic, uint8_t *mac_addr);
void enic_del_mac_address(struct enic *enic, int mac_index);
extern unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq);
extern void enic_send_pkt(struct enic *enic, struct vnic_wq *wq,
struct rte_mbuf *tx_pkt, unsigned short len,
uint8_t sop, uint8_t eop, uint8_t cq_entry,
uint16_t ol_flags, uint16_t vlan_tag);
extern void enic_post_wq_index(struct vnic_wq *wq);
extern int enic_probe(struct enic *enic);
extern int enic_clsf_init(struct enic *enic);
extern void enic_clsf_destroy(struct enic *enic);
uint16_t enic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
uint16_t enic_dummy_recv_pkts(void *rx_queue,
struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
uint16_t enic_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
int enic_set_mtu(struct enic *enic, uint16_t new_mtu);
int enic_link_update(struct enic *enic);
void enic_fdir_info(struct enic *enic);
void enic_fdir_info_get(struct enic *enic, struct rte_eth_fdir_info *stats);
void copy_fltr_v1(struct filter_v2 *fltr, struct rte_eth_fdir_input *input,
struct rte_eth_fdir_masks *masks);
void copy_fltr_v2(struct filter_v2 *fltr, struct rte_eth_fdir_input *input,
struct rte_eth_fdir_masks *masks);
extern const struct rte_flow_ops enic_flow_ops;
#endif /* _ENIC_H_ */
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