aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/netronome/nfp/nfp_port.c
blob: 93c5bfc0510b59975c72411e3e5d09b068a6984b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2017-2018 Netronome Systems, Inc. */

#include <linux/lockdep.h>
#include <linux/netdevice.h>

#include "nfpcore/nfp_cpp.h"
#include "nfpcore/nfp_nsp.h"
#include "nfp_app.h"
#include "nfp_main.h"
#include "nfp_net.h"
#include "nfp_port.h"

struct nfp_port *nfp_port_from_netdev(struct net_device *netdev)
{
	if (nfp_netdev_is_nfp_net(netdev)) {
		struct nfp_net *nn = netdev_priv(netdev);

		return nn->port;
	}

	if (nfp_netdev_is_nfp_repr(netdev)) {
		struct nfp_repr *repr = netdev_priv(netdev);

		return repr->port;
	}

	WARN(1, "Unknown netdev type for nfp_port\n");

	return NULL;
}

int nfp_port_get_port_parent_id(struct net_device *netdev,
				struct netdev_phys_item_id *ppid)
{
	struct nfp_port *port;
	const u8 *serial;

	port = nfp_port_from_netdev(netdev);
	if (!port)
		return -EOPNOTSUPP;

	ppid->id_len = nfp_cpp_serial(port->app->cpp, &serial);
	memcpy(&ppid->id, serial, ppid->id_len);

	return 0;
}

int nfp_port_setup_tc(struct net_device *netdev, enum tc_setup_type type,
		      void *type_data)
{
	struct nfp_port *port;

	port = nfp_port_from_netdev(netdev);
	if (!port)
		return -EOPNOTSUPP;

	return nfp_app_setup_tc(port->app, netdev, type, type_data);
}

int nfp_port_set_features(struct net_device *netdev, netdev_features_t features)
{
	struct nfp_port *port;

	port = nfp_port_from_netdev(netdev);
	if (!port)
		return 0;

	if ((netdev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) &&
	    port->tc_offload_cnt) {
		netdev_err(netdev, "Cannot disable HW TC offload while offloads active\n");
		return -EBUSY;
	}

	return 0;
}

struct nfp_port *
nfp_port_from_id(struct nfp_pf *pf, enum nfp_port_type type, unsigned int id)
{
	struct nfp_port *port;

	lockdep_assert_held(&pf->lock);

	if (type != NFP_PORT_PHYS_PORT)
		return NULL;

	list_for_each_entry(port, &pf->ports, port_list)
		if (port->eth_id == id)
			return port;

	return NULL;
}

struct nfp_eth_table_port *__nfp_port_get_eth_port(struct nfp_port *port)
{
	if (!port)
		return NULL;
	if (port->type != NFP_PORT_PHYS_PORT)
		return NULL;

	return port->eth_port;
}

struct nfp_eth_table_port *nfp_port_get_eth_port(struct nfp_port *port)
{
	if (!__nfp_port_get_eth_port(port))
		return NULL;

	if (test_bit(NFP_PORT_CHANGED, &port->flags))
		if (nfp_net_refresh_eth_port(port))
			return NULL;

	return __nfp_port_get_eth_port(port);
}

int
nfp_port_get_phys_port_name(struct net_device *netdev, char *name, size_t len)
{
	struct nfp_eth_table_port *eth_port;
	struct nfp_port *port;
	int n;

	port = nfp_port_from_netdev(netdev);
	if (!port)
		return -EOPNOTSUPP;

	switch (port->type) {
	case NFP_PORT_PHYS_PORT:
		eth_port = __nfp_port_get_eth_port(port);
		if (!eth_port)
			return -EOPNOTSUPP;

		if (!eth_port->is_split)
			n = snprintf(name, len, "p%d", eth_port->label_port);
		else
			n = snprintf(name, len, "p%ds%d", eth_port->label_port,
				     eth_port->label_subport);
		break;
	case NFP_PORT_PF_PORT:
		if (!port->pf_split)
			n = snprintf(name, len, "pf%d", port->pf_id);
		else
			n = snprintf(name, len, "pf%ds%d", port->pf_id,
				     port->pf_split_id);
		break;
	case NFP_PORT_VF_PORT:
		n = snprintf(name, len, "pf%dvf%d", port->pf_id, port->vf_id);
		break;
	default:
		return -EOPNOTSUPP;
	}

	if (n >= len)
		return -EINVAL;

	return 0;
}

/**
 * nfp_port_configure() - helper to set the interface configured bit
 * @netdev:	net_device instance
 * @configed:	Desired state
 *
 * Helper to set the ifup/ifdown state on the PHY only if there is a physical
 * interface associated with the netdev.
 *
 * Return:
 * 0 - configuration successful (or no change);
 * -ERRNO - configuration failed.
 */
int nfp_port_configure(struct net_device *netdev, bool configed)
{
	struct nfp_eth_table_port *eth_port;
	struct nfp_port *port;
	int err;

	port = nfp_port_from_netdev(netdev);
	eth_port = __nfp_port_get_eth_port(port);
	if (!eth_port)
		return 0;
	if (port->eth_forced)
		return 0;

	err = nfp_eth_set_configured(port->app->cpp, eth_port->index, configed);
	return err < 0 && err != -EOPNOTSUPP ? err : 0;
}

int nfp_port_init_phy_port(struct nfp_pf *pf, struct nfp_app *app,
			   struct nfp_port *port, unsigned int id)
{
	/* Check if vNIC has external port associated and cfg is OK */
	if (!pf->eth_tbl || id >= pf->eth_tbl->count) {
		nfp_err(app->cpp,
			"NSP port entries don't match vNICs (no entry %d)\n",
			id);
		return -EINVAL;
	}
	if (pf->eth_tbl->ports[id].override_changed) {
		nfp_warn(app->cpp,
			 "Config changed for port #%d, reboot required before port will be operational\n",
			 pf->eth_tbl->ports[id].index);
		port->type = NFP_PORT_INVALID;
		return 0;
	}

	port->eth_port = &pf->eth_tbl->ports[id];
	port->eth_id = pf->eth_tbl->ports[id].index;
	if (pf->mac_stats_mem)
		port->eth_stats =
			pf->mac_stats_mem + port->eth_id * NFP_MAC_STATS_SIZE;

	return 0;
}

struct nfp_port *
nfp_port_alloc(struct nfp_app *app, enum nfp_port_type type,
	       struct net_device *netdev)
{
	struct nfp_port *port;

	port = kzalloc(sizeof(*port), GFP_KERNEL);
	if (!port)
		return ERR_PTR(-ENOMEM);

	port->netdev = netdev;
	port->type = type;
	port->app = app;

	list_add_tail(&port->port_list, &app->pf->ports);

	return port;
}

void nfp_port_free(struct nfp_port *port)
{
	if (!port)
		return;
	list_del(&port->port_list);
	kfree(port);
}