/*
* This file is part of the Chelsio T4 / T5 / T6 Ethernet driver for Linux .
*
* Copyright ( c ) 2017 Chelsio Communications , Inc . All rights reserved .
*
* 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 __CXGB4_SMT_H
#define __CXGB4_SMT_H
#include <linux/spinlock.h>
#include <linux/if_ether.h>
#include <linux/atomic.h>
struct adapter;
struct cpl_smt_write_rpl;
/* SMT related handling. Heavily adapted based on l2t ops in l2t.h/l2t.c
*/
enum {
SMT_STATE_SWITCHING,
SMT_STATE_UNUSED,
SMT_STATE_ERROR
};
enum {
SMT_SIZE = 256
};
struct smt_entry {
u16 state;
u16 idx;
u16 pfvf;
u8 src_mac[ETH_ALEN];
int refcnt;
spinlock_t lock; /* protect smt entry add,removal */
};
struct smt_data {
unsigned int smt_size;
rwlock_t lock;
struct smt_entry smtab[] __counted_by(smt_size);
};
struct smt_data *t4_init_smt(void );
struct smt_entry *cxgb4_smt_alloc_switching(struct net_device *dev, u8 *smac);
void cxgb4_smt_release(struct smt_entry *e);
void do_smt_write_rpl(struct adapter *p, const struct cpl_smt_write_rpl *rpl);
#endif /* __CXGB4_SMT_H */
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