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1851f93f SH |
1 | /* |
2 | * Copyright (C) 2017 Netronome Systems, Inc. | |
3 | * | |
4 | * This software is dual licensed under the GNU General License Version 2, | |
5 | * June 1991 as shown in the file COPYING in the top-level directory of this | |
6 | * source tree or the BSD 2-Clause License provided below. You have the | |
7 | * option to license this software under the complete terms of either license. | |
8 | * | |
9 | * The BSD 2-Clause License: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or | |
12 | * without modification, are permitted provided that the following | |
13 | * conditions are met: | |
14 | * | |
15 | * 1. Redistributions of source code must retain the above | |
16 | * copyright notice, this list of conditions and the following | |
17 | * disclaimer. | |
18 | * | |
19 | * 2. Redistributions in binary form must reproduce the above | |
20 | * copyright notice, this list of conditions and the following | |
21 | * disclaimer in the documentation and/or other materials | |
22 | * provided with the distribution. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
31 | * SOFTWARE. | |
32 | */ | |
33 | ||
53e7a08f | 34 | #include <linux/rtnetlink.h> |
1851f93f SH |
35 | #include <net/devlink.h> |
36 | ||
53e7a08f JK |
37 | #include "nfpcore/nfp_nsp.h" |
38 | #include "nfp_app.h" | |
1851f93f | 39 | #include "nfp_main.h" |
53e7a08f JK |
40 | #include "nfp_port.h" |
41 | ||
42 | static int | |
43 | nfp_devlink_fill_eth_port(struct nfp_port *port, | |
44 | struct nfp_eth_table_port *copy) | |
45 | { | |
46 | struct nfp_eth_table_port *eth_port; | |
47 | ||
48 | eth_port = __nfp_port_get_eth_port(port); | |
49 | if (!eth_port) | |
50 | return -EINVAL; | |
51 | ||
52 | memcpy(copy, eth_port, sizeof(*eth_port)); | |
53 | ||
54 | return 0; | |
55 | } | |
1851f93f | 56 | |
ec8b1fbe JK |
57 | static int |
58 | nfp_devlink_fill_eth_port_from_id(struct nfp_pf *pf, unsigned int port_index, | |
59 | struct nfp_eth_table_port *copy) | |
60 | { | |
61 | struct nfp_port *port; | |
62 | ||
63 | port = nfp_port_from_id(pf, NFP_PORT_PHYS_PORT, port_index); | |
64 | ||
65 | return nfp_devlink_fill_eth_port(port, copy); | |
66 | } | |
67 | ||
68 | static int | |
69 | nfp_devlink_set_lanes(struct nfp_pf *pf, unsigned int idx, unsigned int lanes) | |
70 | { | |
71 | struct nfp_nsp *nsp; | |
72 | int ret; | |
73 | ||
74 | nsp = nfp_eth_config_start(pf->cpp, idx); | |
75 | if (IS_ERR(nsp)) | |
76 | return PTR_ERR(nsp); | |
77 | ||
78 | ret = __nfp_eth_set_split(nsp, lanes); | |
79 | if (ret) { | |
80 | nfp_eth_config_cleanup_end(nsp); | |
81 | return ret; | |
82 | } | |
83 | ||
84 | ret = nfp_eth_config_commit_end(nsp); | |
85 | if (ret < 0) | |
86 | return ret; | |
87 | if (ret) /* no change */ | |
88 | return 0; | |
89 | ||
90 | return nfp_net_refresh_port_table_sync(pf); | |
91 | } | |
92 | ||
93 | static int | |
94 | nfp_devlink_port_split(struct devlink *devlink, unsigned int port_index, | |
95 | unsigned int count) | |
96 | { | |
97 | struct nfp_pf *pf = devlink_priv(devlink); | |
98 | struct nfp_eth_table_port eth_port; | |
99 | int ret; | |
100 | ||
101 | if (count < 2) | |
102 | return -EINVAL; | |
103 | ||
104 | mutex_lock(&pf->lock); | |
105 | ||
106 | rtnl_lock(); | |
107 | ret = nfp_devlink_fill_eth_port_from_id(pf, port_index, ð_port); | |
108 | rtnl_unlock(); | |
109 | if (ret) | |
110 | goto out; | |
111 | ||
112 | if (eth_port.is_split || eth_port.port_lanes % count) { | |
113 | ret = -EINVAL; | |
114 | goto out; | |
115 | } | |
116 | ||
117 | ret = nfp_devlink_set_lanes(pf, eth_port.index, | |
118 | eth_port.port_lanes / count); | |
119 | out: | |
120 | mutex_unlock(&pf->lock); | |
121 | ||
122 | return ret; | |
123 | } | |
124 | ||
125 | static int | |
126 | nfp_devlink_port_unsplit(struct devlink *devlink, unsigned int port_index) | |
127 | { | |
128 | struct nfp_pf *pf = devlink_priv(devlink); | |
129 | struct nfp_eth_table_port eth_port; | |
130 | int ret; | |
131 | ||
132 | mutex_lock(&pf->lock); | |
133 | ||
134 | rtnl_lock(); | |
135 | ret = nfp_devlink_fill_eth_port_from_id(pf, port_index, ð_port); | |
136 | rtnl_unlock(); | |
137 | if (ret) | |
138 | goto out; | |
139 | ||
140 | if (!eth_port.is_split) { | |
141 | ret = -EINVAL; | |
142 | goto out; | |
143 | } | |
144 | ||
145 | ret = nfp_devlink_set_lanes(pf, eth_port.index, eth_port.port_lanes); | |
146 | out: | |
147 | mutex_unlock(&pf->lock); | |
148 | ||
149 | return ret; | |
150 | } | |
151 | ||
1851f93f | 152 | const struct devlink_ops nfp_devlink_ops = { |
ec8b1fbe JK |
153 | .port_split = nfp_devlink_port_split, |
154 | .port_unsplit = nfp_devlink_port_unsplit, | |
1851f93f | 155 | }; |
53e7a08f JK |
156 | |
157 | int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port) | |
158 | { | |
159 | struct nfp_eth_table_port eth_port; | |
160 | struct devlink *devlink; | |
161 | int ret; | |
162 | ||
163 | rtnl_lock(); | |
164 | ret = nfp_devlink_fill_eth_port(port, ð_port); | |
165 | rtnl_unlock(); | |
166 | if (ret) | |
167 | return ret; | |
168 | ||
169 | devlink_port_type_eth_set(&port->dl_port, port->netdev); | |
170 | if (eth_port.is_split) | |
171 | devlink_port_split_set(&port->dl_port, eth_port.label_port); | |
172 | ||
173 | devlink = priv_to_devlink(app->pf); | |
174 | ||
175 | return devlink_port_register(devlink, &port->dl_port, port->eth_id); | |
176 | } | |
177 | ||
178 | void nfp_devlink_port_unregister(struct nfp_port *port) | |
179 | { | |
180 | devlink_port_unregister(&port->dl_port); | |
181 | } |