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/*
* Copyright (C) 2017 Netronome Systems, Inc.
*
* This software is dual licensed under the GNU General License Version 2,
* June 1991 as shown in the file COPYING in the top-level directory of this
* source tree or the BSD 2-Clause License provided below. You have the
* option to license this software under the complete terms of either license.
*
* The BSD 2-Clause License:
*
* 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.
*
* 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 NFP_NET_REPR_H
#define NFP_NET_REPR_H
struct metadata_dst;
struct nfp_app;
struct nfp_net;
struct nfp_port;
#include <net/dst_metadata.h>
/**
* struct nfp_reprs - container for representor netdevs
* @num_reprs: Number of elements in reprs array
* @reprs: Array of representor netdevs
*/
struct nfp_reprs {
unsigned int num_reprs;
struct net_device __rcu *reprs[0];
};
/**
* struct nfp_repr_pcpu_stats
* @rx_packets: Received packets
* @rx_bytes: Received bytes
* @tx_packets: Transmitted packets
* @tx_bytes: Transmitted dropped
* @tx_drops: Packets dropped on transmit
* @syncp: Reference count
*/
struct nfp_repr_pcpu_stats {
u64 rx_packets;
u64 rx_bytes;
u64 tx_packets;
u64 tx_bytes;
u64 tx_drops;
struct u64_stats_sync syncp;
};
/**
* struct nfp_repr - priv data for representor netdevs
* @netdev: Back pointer to netdev
* @dst: Destination for packet TX
* @port: Port of representor
* @app: APP handle
* @stats: Statistic of packets hitting CPU
* @app_priv: Pointer for APP data
*/
struct nfp_repr {
struct net_device *netdev;
struct metadata_dst *dst;
struct nfp_port *port;
struct nfp_app *app;
struct nfp_repr_pcpu_stats __percpu *stats;
void *app_priv;
};
/**
* enum nfp_repr_type - type of representor
* @NFP_REPR_TYPE_PHYS_PORT: external NIC port
* @NFP_REPR_TYPE_PF: physical function
* @NFP_REPR_TYPE_VF: virtual function
* @__NFP_REPR_TYPE_MAX: number of representor types
*/
enum nfp_repr_type {
NFP_REPR_TYPE_PHYS_PORT,
NFP_REPR_TYPE_PF,
NFP_REPR_TYPE_VF,
__NFP_REPR_TYPE_MAX,
};
#define NFP_REPR_TYPE_MAX (__NFP_REPR_TYPE_MAX - 1)
extern const struct net_device_ops nfp_repr_netdev_ops;
static inline bool nfp_netdev_is_nfp_repr(struct net_device *netdev)
{
return netdev->netdev_ops == &nfp_repr_netdev_ops;
}
static inline int nfp_repr_get_port_id(struct net_device *netdev)
{
struct nfp_repr *priv = netdev_priv(netdev);
return priv->dst->u.port_info.port_id;
}
struct net_device *
nfp_repr_get_locked(struct nfp_app *app, struct nfp_reprs *set,
unsigned int id);
void nfp_repr_inc_rx_stats(struct net_device *netdev, unsigned int len);
int nfp_repr_init(struct nfp_app *app, struct net_device *netdev,
u32 cmsg_port_id, struct nfp_port *port,
struct net_device *pf_netdev);
void nfp_repr_free(struct net_device *netdev);
struct net_device *
nfp_repr_alloc_mqs(struct nfp_app *app, unsigned int txqs, unsigned int rxqs);
void nfp_repr_clean_and_free(struct nfp_repr *repr);
void nfp_reprs_clean_and_free(struct nfp_app *app, struct nfp_reprs *reprs);
void nfp_reprs_clean_and_free_by_type(struct nfp_app *app,
enum nfp_repr_type type);
struct nfp_reprs *nfp_reprs_alloc(unsigned int num_reprs);
int nfp_reprs_resync_phys_ports(struct nfp_app *app);
static inline struct net_device *nfp_repr_alloc(struct nfp_app *app)
{
return nfp_repr_alloc_mqs(app, 1, 1);
}
#endif /* NFP_NET_REPR_H */
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