devlink: pass devlink_port to port_split / port_unsplit callbacks
[linux-2.6-microblaze.git] / drivers / net / ethernet / netronome / nfp / nfp_port.c
1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */
3
4 #include <linux/lockdep.h>
5 #include <linux/netdevice.h>
6
7 #include "nfpcore/nfp_cpp.h"
8 #include "nfpcore/nfp_nsp.h"
9 #include "nfp_app.h"
10 #include "nfp_main.h"
11 #include "nfp_net.h"
12 #include "nfp_port.h"
13
14 struct nfp_port *nfp_port_from_netdev(struct net_device *netdev)
15 {
16         if (nfp_netdev_is_nfp_net(netdev)) {
17                 struct nfp_net *nn = netdev_priv(netdev);
18
19                 return nn->port;
20         }
21
22         if (nfp_netdev_is_nfp_repr(netdev)) {
23                 struct nfp_repr *repr = netdev_priv(netdev);
24
25                 return repr->port;
26         }
27
28         WARN(1, "Unknown netdev type for nfp_port\n");
29
30         return NULL;
31 }
32
33 int nfp_port_get_port_parent_id(struct net_device *netdev,
34                                 struct netdev_phys_item_id *ppid)
35 {
36         struct nfp_port *port;
37         const u8 *serial;
38
39         port = nfp_port_from_netdev(netdev);
40         if (!port)
41                 return -EOPNOTSUPP;
42
43         ppid->id_len = nfp_cpp_serial(port->app->cpp, &serial);
44         memcpy(&ppid->id, serial, ppid->id_len);
45
46         return 0;
47 }
48
49 int nfp_port_setup_tc(struct net_device *netdev, enum tc_setup_type type,
50                       void *type_data)
51 {
52         struct nfp_port *port;
53
54         port = nfp_port_from_netdev(netdev);
55         if (!port)
56                 return -EOPNOTSUPP;
57
58         return nfp_app_setup_tc(port->app, netdev, type, type_data);
59 }
60
61 int nfp_port_set_features(struct net_device *netdev, netdev_features_t features)
62 {
63         struct nfp_port *port;
64
65         port = nfp_port_from_netdev(netdev);
66         if (!port)
67                 return 0;
68
69         if ((netdev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) &&
70             port->tc_offload_cnt) {
71                 netdev_err(netdev, "Cannot disable HW TC offload while offloads active\n");
72                 return -EBUSY;
73         }
74
75         return 0;
76 }
77
78 struct nfp_eth_table_port *__nfp_port_get_eth_port(struct nfp_port *port)
79 {
80         if (!port)
81                 return NULL;
82         if (port->type != NFP_PORT_PHYS_PORT)
83                 return NULL;
84
85         return port->eth_port;
86 }
87
88 struct nfp_eth_table_port *nfp_port_get_eth_port(struct nfp_port *port)
89 {
90         if (!__nfp_port_get_eth_port(port))
91                 return NULL;
92
93         if (test_bit(NFP_PORT_CHANGED, &port->flags))
94                 if (nfp_net_refresh_eth_port(port))
95                         return NULL;
96
97         return __nfp_port_get_eth_port(port);
98 }
99
100 int
101 nfp_port_get_phys_port_name(struct net_device *netdev, char *name, size_t len)
102 {
103         struct nfp_eth_table_port *eth_port;
104         struct nfp_port *port;
105         int n;
106
107         port = nfp_port_from_netdev(netdev);
108         if (!port)
109                 return -EOPNOTSUPP;
110
111         switch (port->type) {
112         case NFP_PORT_PHYS_PORT:
113                 eth_port = __nfp_port_get_eth_port(port);
114                 if (!eth_port)
115                         return -EOPNOTSUPP;
116
117                 if (!eth_port->is_split)
118                         n = snprintf(name, len, "p%d", eth_port->label_port);
119                 else
120                         n = snprintf(name, len, "p%ds%d", eth_port->label_port,
121                                      eth_port->label_subport);
122                 break;
123         case NFP_PORT_PF_PORT:
124                 if (!port->pf_split)
125                         n = snprintf(name, len, "pf%d", port->pf_id);
126                 else
127                         n = snprintf(name, len, "pf%ds%d", port->pf_id,
128                                      port->pf_split_id);
129                 break;
130         case NFP_PORT_VF_PORT:
131                 n = snprintf(name, len, "pf%dvf%d", port->pf_id, port->vf_id);
132                 break;
133         default:
134                 return -EOPNOTSUPP;
135         }
136
137         if (n >= len)
138                 return -EINVAL;
139
140         return 0;
141 }
142
143 /**
144  * nfp_port_configure() - helper to set the interface configured bit
145  * @netdev:     net_device instance
146  * @configed:   Desired state
147  *
148  * Helper to set the ifup/ifdown state on the PHY only if there is a physical
149  * interface associated with the netdev.
150  *
151  * Return:
152  * 0 - configuration successful (or no change);
153  * -ERRNO - configuration failed.
154  */
155 int nfp_port_configure(struct net_device *netdev, bool configed)
156 {
157         struct nfp_eth_table_port *eth_port;
158         struct nfp_port *port;
159         int err;
160
161         port = nfp_port_from_netdev(netdev);
162         eth_port = __nfp_port_get_eth_port(port);
163         if (!eth_port)
164                 return 0;
165         if (port->eth_forced)
166                 return 0;
167
168         err = nfp_eth_set_configured(port->app->cpp, eth_port->index, configed);
169         return err < 0 && err != -EOPNOTSUPP ? err : 0;
170 }
171
172 int nfp_port_init_phy_port(struct nfp_pf *pf, struct nfp_app *app,
173                            struct nfp_port *port, unsigned int id)
174 {
175         /* Check if vNIC has external port associated and cfg is OK */
176         if (!pf->eth_tbl || id >= pf->eth_tbl->count) {
177                 nfp_err(app->cpp,
178                         "NSP port entries don't match vNICs (no entry %d)\n",
179                         id);
180                 return -EINVAL;
181         }
182         if (pf->eth_tbl->ports[id].override_changed) {
183                 nfp_warn(app->cpp,
184                          "Config changed for port #%d, reboot required before port will be operational\n",
185                          pf->eth_tbl->ports[id].index);
186                 port->type = NFP_PORT_INVALID;
187                 return 0;
188         }
189
190         port->eth_port = &pf->eth_tbl->ports[id];
191         port->eth_id = pf->eth_tbl->ports[id].index;
192         if (pf->mac_stats_mem)
193                 port->eth_stats =
194                         pf->mac_stats_mem + port->eth_id * NFP_MAC_STATS_SIZE;
195
196         return 0;
197 }
198
199 struct nfp_port *
200 nfp_port_alloc(struct nfp_app *app, enum nfp_port_type type,
201                struct net_device *netdev)
202 {
203         struct nfp_port *port;
204
205         port = kzalloc(sizeof(*port), GFP_KERNEL);
206         if (!port)
207                 return ERR_PTR(-ENOMEM);
208
209         port->netdev = netdev;
210         port->type = type;
211         port->app = app;
212
213         list_add_tail(&port->port_list, &app->pf->ports);
214
215         return port;
216 }
217
218 void nfp_port_free(struct nfp_port *port)
219 {
220         if (!port)
221                 return;
222         list_del(&port->port_list);
223         kfree(port);
224 }