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/* QLogic qed NIC Driver
* Copyright (c) 2015-2017 QLogic Corporation
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed 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, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - 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 _QED_LL2_IF_H
#define _QED_LL2_IF_H
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/netdevice.h>
#include <linux/pci.h>
#include <linux/skbuff.h>
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/qed/qed_if.h>
struct qed_ll2_stats {
u64 gsi_invalid_hdr;
u64 gsi_invalid_pkt_length;
u64 gsi_unsupported_pkt_typ;
u64 gsi_crcchksm_error;
u64 packet_too_big_discard;
u64 no_buff_discard;
u64 rcv_ucast_bytes;
u64 rcv_mcast_bytes;
u64 rcv_bcast_bytes;
u64 rcv_ucast_pkts;
u64 rcv_mcast_pkts;
u64 rcv_bcast_pkts;
u64 sent_ucast_bytes;
u64 sent_mcast_bytes;
u64 sent_bcast_bytes;
u64 sent_ucast_pkts;
u64 sent_mcast_pkts;
u64 sent_bcast_pkts;
};
#define QED_LL2_UNUSED_HANDLE (0xff)
struct qed_ll2_cb_ops {
int (*rx_cb)(void *, struct sk_buff *, u32, u32);
int (*tx_cb)(void *, struct sk_buff *, bool);
};
struct qed_ll2_params {
u16 mtu;
bool drop_ttl0_packets;
bool rx_vlan_stripping;
u8 tx_tc;
bool frags_mapped;
u8 ll2_mac_address[ETH_ALEN];
};
struct qed_ll2_ops {
/**
* @brief start - initializes ll2
*
* @param cdev
* @param params - protocol driver configuration for the ll2.
*
* @return 0 on success, otherwise error value.
*/
int (*start)(struct qed_dev *cdev, struct qed_ll2_params *params);
/**
* @brief stop - stops the ll2
*
* @param cdev
*
* @return 0 on success, otherwise error value.
*/
int (*stop)(struct qed_dev *cdev);
/**
* @brief start_xmit - transmits an skb over the ll2 interface
*
* @param cdev
* @param skb
*
* @return 0 on success, otherwise error value.
*/
int (*start_xmit)(struct qed_dev *cdev, struct sk_buff *skb);
/**
* @brief register_cb_ops - protocol driver register the callback for Rx/Tx
* packets. Should be called before `start'.
*
* @param cdev
* @param cookie - to be passed to the callback functions.
* @param ops - the callback functions to register for Rx / Tx.
*
* @return 0 on success, otherwise error value.
*/
void (*register_cb_ops)(struct qed_dev *cdev,
const struct qed_ll2_cb_ops *ops,
void *cookie);
/**
* @brief get LL2 related statistics
*
* @param cdev
* @param stats - pointer to struct that would be filled with stats
*
* @return 0 on success, error otherwise.
*/
int (*get_stats)(struct qed_dev *cdev, struct qed_ll2_stats *stats);
};
#ifdef CONFIG_QED_LL2
int qed_ll2_alloc_if(struct qed_dev *);
void qed_ll2_dealloc_if(struct qed_dev *);
#else
static const struct qed_ll2_ops qed_ll2_ops_pass = {
.start = NULL,
.stop = NULL,
.start_xmit = NULL,
.register_cb_ops = NULL,
.get_stats = NULL,
};
static inline int qed_ll2_alloc_if(struct qed_dev *cdev)
{
return 0;
}
static inline void qed_ll2_dealloc_if(struct qed_dev *cdev)
{
}
#endif
#endif
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