1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * This file is part of the Chelsio T4/T5/T6 Ethernet driver for Linux. 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright (c) 2017 Chelsio Communications, Inc. All rights reserved. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * This software is available to you under a choice of one of two 7*4882a593Smuzhiyun * licenses. You may choose to be licensed under the terms of the GNU 8*4882a593Smuzhiyun * General Public License (GPL) Version 2, available from the file 9*4882a593Smuzhiyun * COPYING in the main directory of this source tree, or the 10*4882a593Smuzhiyun * OpenIB.org BSD license below: 11*4882a593Smuzhiyun * 12*4882a593Smuzhiyun * Redistribution and use in source and binary forms, with or 13*4882a593Smuzhiyun * without modification, are permitted provided that the following 14*4882a593Smuzhiyun * conditions are met: 15*4882a593Smuzhiyun * 16*4882a593Smuzhiyun * - Redistributions of source code must retain the above 17*4882a593Smuzhiyun * copyright notice, this list of conditions and the following 18*4882a593Smuzhiyun * disclaimer. 19*4882a593Smuzhiyun * 20*4882a593Smuzhiyun * - Redistributions in binary form must reproduce the above 21*4882a593Smuzhiyun * copyright notice, this list of conditions and the following 22*4882a593Smuzhiyun * disclaimer in the documentation and/or other materials 23*4882a593Smuzhiyun * provided with the distribution. 24*4882a593Smuzhiyun * 25*4882a593Smuzhiyun * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26*4882a593Smuzhiyun * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27*4882a593Smuzhiyun * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28*4882a593Smuzhiyun * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29*4882a593Smuzhiyun * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30*4882a593Smuzhiyun * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31*4882a593Smuzhiyun * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32*4882a593Smuzhiyun * SOFTWARE. 33*4882a593Smuzhiyun */ 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun #ifndef __CXGB4_SMT_H 36*4882a593Smuzhiyun #define __CXGB4_SMT_H 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun #include <linux/spinlock.h> 39*4882a593Smuzhiyun #include <linux/if_ether.h> 40*4882a593Smuzhiyun #include <linux/atomic.h> 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun struct adapter; 43*4882a593Smuzhiyun struct cpl_smt_write_rpl; 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun /* SMT related handling. Heavily adapted based on l2t ops in l2t.h/l2t.c 46*4882a593Smuzhiyun */ 47*4882a593Smuzhiyun enum { 48*4882a593Smuzhiyun SMT_STATE_SWITCHING, 49*4882a593Smuzhiyun SMT_STATE_UNUSED, 50*4882a593Smuzhiyun SMT_STATE_ERROR 51*4882a593Smuzhiyun }; 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun enum { 54*4882a593Smuzhiyun SMT_SIZE = 256 55*4882a593Smuzhiyun }; 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun struct smt_entry { 58*4882a593Smuzhiyun u16 state; 59*4882a593Smuzhiyun u16 idx; 60*4882a593Smuzhiyun u16 pfvf; 61*4882a593Smuzhiyun u8 src_mac[ETH_ALEN]; 62*4882a593Smuzhiyun int refcnt; 63*4882a593Smuzhiyun spinlock_t lock; /* protect smt entry add,removal */ 64*4882a593Smuzhiyun }; 65*4882a593Smuzhiyun 66*4882a593Smuzhiyun struct smt_data { 67*4882a593Smuzhiyun unsigned int smt_size; 68*4882a593Smuzhiyun rwlock_t lock; 69*4882a593Smuzhiyun struct smt_entry smtab[]; 70*4882a593Smuzhiyun }; 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun struct smt_data *t4_init_smt(void); 73*4882a593Smuzhiyun struct smt_entry *cxgb4_smt_alloc_switching(struct net_device *dev, u8 *smac); 74*4882a593Smuzhiyun void cxgb4_smt_release(struct smt_entry *e); 75*4882a593Smuzhiyun void do_smt_write_rpl(struct adapter *p, const struct cpl_smt_write_rpl *rpl); 76*4882a593Smuzhiyun #endif /* __CXGB4_SMT_H */ 77