1 /* 2 * This file is part of the Chelsio T4/T5/T6 Ethernet driver for Linux. 3 * 4 * Copyright (c) 2017 Chelsio Communications, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 35 #ifndef __CXGB4_SMT_H 36 #define __CXGB4_SMT_H 37 38 #include <linux/spinlock.h> 39 #include <linux/if_ether.h> 40 #include <linux/atomic.h> 41 42 struct adapter; 43 struct cpl_smt_write_rpl; 44 45 /* SMT related handling. Heavily adapted based on l2t ops in l2t.h/l2t.c 46 */ 47 enum { 48 SMT_STATE_SWITCHING, 49 SMT_STATE_UNUSED, 50 SMT_STATE_ERROR 51 }; 52 53 enum { 54 SMT_SIZE = 256 55 }; 56 57 struct smt_entry { 58 u16 state; 59 u16 idx; 60 u16 pfvf; 61 u8 src_mac[ETH_ALEN]; 62 atomic_t refcnt; 63 spinlock_t lock; /* protect smt entry add,removal */ 64 }; 65 66 struct smt_data { 67 unsigned int smt_size; 68 rwlock_t lock; 69 struct smt_entry smtab[0]; 70 }; 71 72 struct smt_data *t4_init_smt(void); 73 struct smt_entry *cxgb4_smt_alloc_switching(struct net_device *dev, u8 *smac); 74 void cxgb4_smt_release(struct smt_entry *e); 75 void do_smt_write_rpl(struct adapter *p, const struct cpl_smt_write_rpl *rpl); 76 #endif /* __CXGB4_SMT_H */ 77