cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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smt.h (2360B)

      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
     42struct adapter;
     43struct cpl_smt_write_rpl;
     44
     45/* SMT related handling. Heavily adapted based on l2t ops in l2t.h/l2t.c
     46 */
     47enum {
     48	SMT_STATE_SWITCHING,
     49	SMT_STATE_UNUSED,
     50	SMT_STATE_ERROR
     51};
     52
     53enum {
     54	SMT_SIZE = 256
     55};
     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[];
     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 */