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 | int 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[] __counted_by(smt_size); |
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 | |