77 lines · c
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 two7 * licenses. You may choose to be licensed under the terms of the GNU8 * General Public License (GPL) Version 2, available from the file9 * COPYING in the main directory of this source tree, or the10 * OpenIB.org BSD license below:11 *12 * Redistribution and use in source and binary forms, with or13 * without modification, are permitted provided that the following14 * conditions are met:15 *16 * - Redistributions of source code must retain the above17 * copyright notice, this list of conditions and the following18 * disclaimer.19 *20 * - Redistributions in binary form must reproduce the above21 * copyright notice, this list of conditions and the following22 * disclaimer in the documentation and/or other materials23 * 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 OF27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE32 * SOFTWARE.33 */34 35#ifndef __CXGB4_SMT_H36#define __CXGB4_SMT_H37 38#include <linux/spinlock.h>39#include <linux/if_ether.h>40#include <linux/atomic.h>41 42struct adapter;43struct cpl_smt_write_rpl;44 45/* SMT related handling. Heavily adapted based on l2t ops in l2t.h/l2t.c46 */47enum {48 SMT_STATE_SWITCHING,49 SMT_STATE_UNUSED,50 SMT_STATE_ERROR51};52 53enum {54 SMT_SIZE = 25655};56 57struct smt_entry {58 u16 state;59 u16 idx;60 u16 pfvf;61 u8 src_mac[ETH_ALEN];62 int refcnt;63 spinlock_t lock; /* protect smt entry add,removal */64};65 66struct smt_data {67 unsigned int smt_size;68 rwlock_t lock;69 struct smt_entry smtab[] __counted_by(smt_size);70};71 72struct smt_data *t4_init_smt(void);73struct smt_entry *cxgb4_smt_alloc_switching(struct net_device *dev, u8 *smac);74void cxgb4_smt_release(struct smt_entry *e);75void do_smt_write_rpl(struct adapter *p, const struct cpl_smt_write_rpl *rpl);76#endif /* __CXGB4_SMT_H */77