1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 /* Copyright (C) 2015-2018 Netronome Systems, Inc. */
3
4 /*
5 * nfp_net_ethtool.c
6 * Netronome network device driver: ethtool support
7 * Authors: Jakub Kicinski <jakub.kicinski@netronome.com>
8 * Jason McMullan <jason.mcmullan@netronome.com>
9 * Rolf Neugebauer <rolf.neugebauer@netronome.com>
10 * Brad Petrus <brad.petrus@netronome.com>
11 */
12
13 #include <linux/bitfield.h>
14 #include <linux/kernel.h>
15 #include <linux/netdevice.h>
16 #include <linux/etherdevice.h>
17 #include <linux/interrupt.h>
18 #include <linux/pci.h>
19 #include <linux/ethtool.h>
20 #include <linux/firmware.h>
21 #include <linux/sfp.h>
22
23 #include "nfpcore/nfp.h"
24 #include "nfpcore/nfp_nsp.h"
25 #include "nfp_app.h"
26 #include "nfp_main.h"
27 #include "nfp_net_ctrl.h"
28 #include "nfp_net.h"
29 #include "nfp_port.h"
30
31 struct nfp_et_stat {
32 char name[ETH_GSTRING_LEN];
33 int off;
34 };
35
36 static const struct nfp_et_stat nfp_net_et_stats[] = {
37 /* Stats from the device */
38 { "dev_rx_discards", NFP_NET_CFG_STATS_RX_DISCARDS },
39 { "dev_rx_errors", NFP_NET_CFG_STATS_RX_ERRORS },
40 { "dev_rx_bytes", NFP_NET_CFG_STATS_RX_OCTETS },
41 { "dev_rx_uc_bytes", NFP_NET_CFG_STATS_RX_UC_OCTETS },
42 { "dev_rx_mc_bytes", NFP_NET_CFG_STATS_RX_MC_OCTETS },
43 { "dev_rx_bc_bytes", NFP_NET_CFG_STATS_RX_BC_OCTETS },
44 { "dev_rx_pkts", NFP_NET_CFG_STATS_RX_FRAMES },
45 { "dev_rx_mc_pkts", NFP_NET_CFG_STATS_RX_MC_FRAMES },
46 { "dev_rx_bc_pkts", NFP_NET_CFG_STATS_RX_BC_FRAMES },
47
48 { "dev_tx_discards", NFP_NET_CFG_STATS_TX_DISCARDS },
49 { "dev_tx_errors", NFP_NET_CFG_STATS_TX_ERRORS },
50 { "dev_tx_bytes", NFP_NET_CFG_STATS_TX_OCTETS },
51 { "dev_tx_uc_bytes", NFP_NET_CFG_STATS_TX_UC_OCTETS },
52 { "dev_tx_mc_bytes", NFP_NET_CFG_STATS_TX_MC_OCTETS },
53 { "dev_tx_bc_bytes", NFP_NET_CFG_STATS_TX_BC_OCTETS },
54 { "dev_tx_pkts", NFP_NET_CFG_STATS_TX_FRAMES },
55 { "dev_tx_mc_pkts", NFP_NET_CFG_STATS_TX_MC_FRAMES },
56 { "dev_tx_bc_pkts", NFP_NET_CFG_STATS_TX_BC_FRAMES },
57
58 { "bpf_pass_pkts", NFP_NET_CFG_STATS_APP0_FRAMES },
59 { "bpf_pass_bytes", NFP_NET_CFG_STATS_APP0_BYTES },
60 /* see comments in outro functions in nfp_bpf_jit.c to find out
61 * how different BPF modes use app-specific counters
62 */
63 { "bpf_app1_pkts", NFP_NET_CFG_STATS_APP1_FRAMES },
64 { "bpf_app1_bytes", NFP_NET_CFG_STATS_APP1_BYTES },
65 { "bpf_app2_pkts", NFP_NET_CFG_STATS_APP2_FRAMES },
66 { "bpf_app2_bytes", NFP_NET_CFG_STATS_APP2_BYTES },
67 { "bpf_app3_pkts", NFP_NET_CFG_STATS_APP3_FRAMES },
68 { "bpf_app3_bytes", NFP_NET_CFG_STATS_APP3_BYTES },
69 };
70
71 static const struct nfp_et_stat nfp_mac_et_stats[] = {
72 { "rx_octets", NFP_MAC_STATS_RX_IN_OCTETS, },
73 { "rx_frame_too_long_errors",
74 NFP_MAC_STATS_RX_FRAME_TOO_LONG_ERRORS, },
75 { "rx_range_length_errors", NFP_MAC_STATS_RX_RANGE_LENGTH_ERRORS, },
76 { "rx_vlan_received_ok", NFP_MAC_STATS_RX_VLAN_RECEIVED_OK, },
77 { "rx_errors", NFP_MAC_STATS_RX_IN_ERRORS, },
78 { "rx_broadcast_pkts", NFP_MAC_STATS_RX_IN_BROADCAST_PKTS, },
79 { "rx_drop_events", NFP_MAC_STATS_RX_DROP_EVENTS, },
80 { "rx_alignment_errors", NFP_MAC_STATS_RX_ALIGNMENT_ERRORS, },
81 { "rx_pause_mac_ctrl_frames",
82 NFP_MAC_STATS_RX_PAUSE_MAC_CTRL_FRAMES, },
83 { "rx_frames_received_ok", NFP_MAC_STATS_RX_FRAMES_RECEIVED_OK, },
84 { "rx_frame_check_sequence_errors",
85 NFP_MAC_STATS_RX_FRAME_CHECK_SEQUENCE_ERRORS, },
86 { "rx_unicast_pkts", NFP_MAC_STATS_RX_UNICAST_PKTS, },
87 { "rx_multicast_pkts", NFP_MAC_STATS_RX_MULTICAST_PKTS, },
88 { "rx_pkts", NFP_MAC_STATS_RX_PKTS, },
89 { "rx_undersize_pkts", NFP_MAC_STATS_RX_UNDERSIZE_PKTS, },
90 { "rx_pkts_64_octets", NFP_MAC_STATS_RX_PKTS_64_OCTETS, },
91 { "rx_pkts_65_to_127_octets",
92 NFP_MAC_STATS_RX_PKTS_65_TO_127_OCTETS, },
93 { "rx_pkts_128_to_255_octets",
94 NFP_MAC_STATS_RX_PKTS_128_TO_255_OCTETS, },
95 { "rx_pkts_256_to_511_octets",
96 NFP_MAC_STATS_RX_PKTS_256_TO_511_OCTETS, },
97 { "rx_pkts_512_to_1023_octets",
98 NFP_MAC_STATS_RX_PKTS_512_TO_1023_OCTETS, },
99 { "rx_pkts_1024_to_1518_octets",
100 NFP_MAC_STATS_RX_PKTS_1024_TO_1518_OCTETS, },
101 { "rx_pkts_1519_to_max_octets",
102 NFP_MAC_STATS_RX_PKTS_1519_TO_MAX_OCTETS, },
103 { "rx_jabbers", NFP_MAC_STATS_RX_JABBERS, },
104 { "rx_fragments", NFP_MAC_STATS_RX_FRAGMENTS, },
105 { "rx_oversize_pkts", NFP_MAC_STATS_RX_OVERSIZE_PKTS, },
106 { "rx_pause_frames_class0", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS0, },
107 { "rx_pause_frames_class1", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS1, },
108 { "rx_pause_frames_class2", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS2, },
109 { "rx_pause_frames_class3", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS3, },
110 { "rx_pause_frames_class4", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS4, },
111 { "rx_pause_frames_class5", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS5, },
112 { "rx_pause_frames_class6", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS6, },
113 { "rx_pause_frames_class7", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS7, },
114 { "rx_mac_ctrl_frames_received",
115 NFP_MAC_STATS_RX_MAC_CTRL_FRAMES_RECEIVED, },
116 { "rx_mac_head_drop", NFP_MAC_STATS_RX_MAC_HEAD_DROP, },
117 { "tx_queue_drop", NFP_MAC_STATS_TX_QUEUE_DROP, },
118 { "tx_octets", NFP_MAC_STATS_TX_OUT_OCTETS, },
119 { "tx_vlan_transmitted_ok", NFP_MAC_STATS_TX_VLAN_TRANSMITTED_OK, },
120 { "tx_errors", NFP_MAC_STATS_TX_OUT_ERRORS, },
121 { "tx_broadcast_pkts", NFP_MAC_STATS_TX_BROADCAST_PKTS, },
122 { "tx_pause_mac_ctrl_frames",
123 NFP_MAC_STATS_TX_PAUSE_MAC_CTRL_FRAMES, },
124 { "tx_frames_transmitted_ok",
125 NFP_MAC_STATS_TX_FRAMES_TRANSMITTED_OK, },
126 { "tx_unicast_pkts", NFP_MAC_STATS_TX_UNICAST_PKTS, },
127 { "tx_multicast_pkts", NFP_MAC_STATS_TX_MULTICAST_PKTS, },
128 { "tx_pkts_64_octets", NFP_MAC_STATS_TX_PKTS_64_OCTETS, },
129 { "tx_pkts_65_to_127_octets",
130 NFP_MAC_STATS_TX_PKTS_65_TO_127_OCTETS, },
131 { "tx_pkts_128_to_255_octets",
132 NFP_MAC_STATS_TX_PKTS_128_TO_255_OCTETS, },
133 { "tx_pkts_256_to_511_octets",
134 NFP_MAC_STATS_TX_PKTS_256_TO_511_OCTETS, },
135 { "tx_pkts_512_to_1023_octets",
136 NFP_MAC_STATS_TX_PKTS_512_TO_1023_OCTETS, },
137 { "tx_pkts_1024_to_1518_octets",
138 NFP_MAC_STATS_TX_PKTS_1024_TO_1518_OCTETS, },
139 { "tx_pkts_1519_to_max_octets",
140 NFP_MAC_STATS_TX_PKTS_1519_TO_MAX_OCTETS, },
141 { "tx_pause_frames_class0", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS0, },
142 { "tx_pause_frames_class1", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS1, },
143 { "tx_pause_frames_class2", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS2, },
144 { "tx_pause_frames_class3", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS3, },
145 { "tx_pause_frames_class4", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS4, },
146 { "tx_pause_frames_class5", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS5, },
147 { "tx_pause_frames_class6", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS6, },
148 { "tx_pause_frames_class7", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS7, },
149 };
150
151 static const char nfp_tlv_stat_names[][ETH_GSTRING_LEN] = {
152 [1] = "dev_rx_discards",
153 [2] = "dev_rx_errors",
154 [3] = "dev_rx_bytes",
155 [4] = "dev_rx_uc_bytes",
156 [5] = "dev_rx_mc_bytes",
157 [6] = "dev_rx_bc_bytes",
158 [7] = "dev_rx_pkts",
159 [8] = "dev_rx_mc_pkts",
160 [9] = "dev_rx_bc_pkts",
161
162 [10] = "dev_tx_discards",
163 [11] = "dev_tx_errors",
164 [12] = "dev_tx_bytes",
165 [13] = "dev_tx_uc_bytes",
166 [14] = "dev_tx_mc_bytes",
167 [15] = "dev_tx_bc_bytes",
168 [16] = "dev_tx_pkts",
169 [17] = "dev_tx_mc_pkts",
170 [18] = "dev_tx_bc_pkts",
171 };
172
173 #define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats)
174 #define NN_ET_SWITCH_STATS_LEN 9
175 #define NN_RVEC_GATHER_STATS 13
176 #define NN_RVEC_PER_Q_STATS 3
177 #define NN_CTRL_PATH_STATS 4
178
179 #define SFP_SFF_REV_COMPLIANCE 1
180
nfp_net_get_nspinfo(struct nfp_app * app,char * version)181 static void nfp_net_get_nspinfo(struct nfp_app *app, char *version)
182 {
183 struct nfp_nsp *nsp;
184
185 if (!app)
186 return;
187
188 nsp = nfp_nsp_open(app->cpp);
189 if (IS_ERR(nsp))
190 return;
191
192 snprintf(version, ETHTOOL_FWVERS_LEN, "%hu.%hu",
193 nfp_nsp_get_abi_ver_major(nsp),
194 nfp_nsp_get_abi_ver_minor(nsp));
195
196 nfp_nsp_close(nsp);
197 }
198
199 static void
nfp_get_drvinfo(struct nfp_app * app,struct pci_dev * pdev,const char * vnic_version,struct ethtool_drvinfo * drvinfo)200 nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev,
201 const char *vnic_version, struct ethtool_drvinfo *drvinfo)
202 {
203 char nsp_version[ETHTOOL_FWVERS_LEN] = {};
204
205 strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver));
206 nfp_net_get_nspinfo(app, nsp_version);
207 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
208 "%s %s %s %s", vnic_version, nsp_version,
209 nfp_app_mip_name(app), nfp_app_name(app));
210 }
211
212 static void
nfp_net_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)213 nfp_net_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
214 {
215 char vnic_version[ETHTOOL_FWVERS_LEN] = {};
216 struct nfp_net *nn = netdev_priv(netdev);
217
218 snprintf(vnic_version, sizeof(vnic_version), "%d.%d.%d.%d",
219 nn->fw_ver.resv, nn->fw_ver.class,
220 nn->fw_ver.major, nn->fw_ver.minor);
221 strlcpy(drvinfo->bus_info, pci_name(nn->pdev),
222 sizeof(drvinfo->bus_info));
223
224 nfp_get_drvinfo(nn->app, nn->pdev, vnic_version, drvinfo);
225 }
226
227 static void
nfp_app_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)228 nfp_app_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
229 {
230 struct nfp_app *app = nfp_app_from_netdev(netdev);
231
232 strlcpy(drvinfo->bus_info, pci_name(app->pdev),
233 sizeof(drvinfo->bus_info));
234 nfp_get_drvinfo(app, app->pdev, "*", drvinfo);
235 }
236
237 static void
nfp_net_set_fec_link_mode(struct nfp_eth_table_port * eth_port,struct ethtool_link_ksettings * c)238 nfp_net_set_fec_link_mode(struct nfp_eth_table_port *eth_port,
239 struct ethtool_link_ksettings *c)
240 {
241 unsigned int modes;
242
243 ethtool_link_ksettings_add_link_mode(c, supported, FEC_NONE);
244 if (!nfp_eth_can_support_fec(eth_port)) {
245 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_NONE);
246 return;
247 }
248
249 modes = nfp_eth_supported_fec_modes(eth_port);
250 if (modes & NFP_FEC_BASER) {
251 ethtool_link_ksettings_add_link_mode(c, supported, FEC_BASER);
252 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_BASER);
253 }
254
255 if (modes & NFP_FEC_REED_SOLOMON) {
256 ethtool_link_ksettings_add_link_mode(c, supported, FEC_RS);
257 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_RS);
258 }
259 }
260
261 /**
262 * nfp_net_get_link_ksettings - Get Link Speed settings
263 * @netdev: network interface device structure
264 * @cmd: ethtool command
265 *
266 * Reports speed settings based on info in the BAR provided by the fw.
267 */
268 static int
nfp_net_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * cmd)269 nfp_net_get_link_ksettings(struct net_device *netdev,
270 struct ethtool_link_ksettings *cmd)
271 {
272 static const u32 ls_to_ethtool[] = {
273 [NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED] = 0,
274 [NFP_NET_CFG_STS_LINK_RATE_UNKNOWN] = SPEED_UNKNOWN,
275 [NFP_NET_CFG_STS_LINK_RATE_1G] = SPEED_1000,
276 [NFP_NET_CFG_STS_LINK_RATE_10G] = SPEED_10000,
277 [NFP_NET_CFG_STS_LINK_RATE_25G] = SPEED_25000,
278 [NFP_NET_CFG_STS_LINK_RATE_40G] = SPEED_40000,
279 [NFP_NET_CFG_STS_LINK_RATE_50G] = SPEED_50000,
280 [NFP_NET_CFG_STS_LINK_RATE_100G] = SPEED_100000,
281 };
282 struct nfp_eth_table_port *eth_port;
283 struct nfp_port *port;
284 struct nfp_net *nn;
285 u32 sts, ls;
286
287 /* Init to unknowns */
288 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
289 cmd->base.port = PORT_OTHER;
290 cmd->base.speed = SPEED_UNKNOWN;
291 cmd->base.duplex = DUPLEX_UNKNOWN;
292
293 port = nfp_port_from_netdev(netdev);
294 eth_port = nfp_port_get_eth_port(port);
295 if (eth_port) {
296 cmd->base.autoneg = eth_port->aneg != NFP_ANEG_DISABLED ?
297 AUTONEG_ENABLE : AUTONEG_DISABLE;
298 nfp_net_set_fec_link_mode(eth_port, cmd);
299 }
300
301 if (!netif_carrier_ok(netdev))
302 return 0;
303
304 /* Use link speed from ETH table if available, otherwise try the BAR */
305 if (eth_port) {
306 cmd->base.port = eth_port->port_type;
307 cmd->base.speed = eth_port->speed;
308 cmd->base.duplex = DUPLEX_FULL;
309 return 0;
310 }
311
312 if (!nfp_netdev_is_nfp_net(netdev))
313 return -EOPNOTSUPP;
314 nn = netdev_priv(netdev);
315
316 sts = nn_readl(nn, NFP_NET_CFG_STS);
317
318 ls = FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts);
319 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED)
320 return -EOPNOTSUPP;
321
322 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNKNOWN ||
323 ls >= ARRAY_SIZE(ls_to_ethtool))
324 return 0;
325
326 cmd->base.speed = ls_to_ethtool[ls];
327 cmd->base.duplex = DUPLEX_FULL;
328
329 return 0;
330 }
331
332 static int
nfp_net_set_link_ksettings(struct net_device * netdev,const struct ethtool_link_ksettings * cmd)333 nfp_net_set_link_ksettings(struct net_device *netdev,
334 const struct ethtool_link_ksettings *cmd)
335 {
336 struct nfp_eth_table_port *eth_port;
337 struct nfp_port *port;
338 struct nfp_nsp *nsp;
339 int err;
340
341 port = nfp_port_from_netdev(netdev);
342 eth_port = __nfp_port_get_eth_port(port);
343 if (!eth_port)
344 return -EOPNOTSUPP;
345
346 if (netif_running(netdev)) {
347 netdev_warn(netdev, "Changing settings not allowed on an active interface. It may cause the port to be disabled until driver reload.\n");
348 return -EBUSY;
349 }
350
351 nsp = nfp_eth_config_start(port->app->cpp, eth_port->index);
352 if (IS_ERR(nsp))
353 return PTR_ERR(nsp);
354
355 err = __nfp_eth_set_aneg(nsp, cmd->base.autoneg == AUTONEG_ENABLE ?
356 NFP_ANEG_AUTO : NFP_ANEG_DISABLED);
357 if (err)
358 goto err_bad_set;
359 if (cmd->base.speed != SPEED_UNKNOWN) {
360 u32 speed = cmd->base.speed / eth_port->lanes;
361
362 err = __nfp_eth_set_speed(nsp, speed);
363 if (err)
364 goto err_bad_set;
365 }
366
367 err = nfp_eth_config_commit_end(nsp);
368 if (err > 0)
369 return 0; /* no change */
370
371 nfp_net_refresh_port_table(port);
372
373 return err;
374
375 err_bad_set:
376 nfp_eth_config_cleanup_end(nsp);
377 return err;
378 }
379
nfp_net_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring)380 static void nfp_net_get_ringparam(struct net_device *netdev,
381 struct ethtool_ringparam *ring)
382 {
383 struct nfp_net *nn = netdev_priv(netdev);
384
385 ring->rx_max_pending = NFP_NET_MAX_RX_DESCS;
386 ring->tx_max_pending = NFP_NET_MAX_TX_DESCS;
387 ring->rx_pending = nn->dp.rxd_cnt;
388 ring->tx_pending = nn->dp.txd_cnt;
389 }
390
nfp_net_set_ring_size(struct nfp_net * nn,u32 rxd_cnt,u32 txd_cnt)391 static int nfp_net_set_ring_size(struct nfp_net *nn, u32 rxd_cnt, u32 txd_cnt)
392 {
393 struct nfp_net_dp *dp;
394
395 dp = nfp_net_clone_dp(nn);
396 if (!dp)
397 return -ENOMEM;
398
399 dp->rxd_cnt = rxd_cnt;
400 dp->txd_cnt = txd_cnt;
401
402 return nfp_net_ring_reconfig(nn, dp, NULL);
403 }
404
nfp_net_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring)405 static int nfp_net_set_ringparam(struct net_device *netdev,
406 struct ethtool_ringparam *ring)
407 {
408 struct nfp_net *nn = netdev_priv(netdev);
409 u32 rxd_cnt, txd_cnt;
410
411 /* We don't have separate queues/rings for small/large frames. */
412 if (ring->rx_mini_pending || ring->rx_jumbo_pending)
413 return -EINVAL;
414
415 /* Round up to supported values */
416 rxd_cnt = roundup_pow_of_two(ring->rx_pending);
417 txd_cnt = roundup_pow_of_two(ring->tx_pending);
418
419 if (rxd_cnt < NFP_NET_MIN_RX_DESCS || rxd_cnt > NFP_NET_MAX_RX_DESCS ||
420 txd_cnt < NFP_NET_MIN_TX_DESCS || txd_cnt > NFP_NET_MAX_TX_DESCS)
421 return -EINVAL;
422
423 if (nn->dp.rxd_cnt == rxd_cnt && nn->dp.txd_cnt == txd_cnt)
424 return 0;
425
426 nn_dbg(nn, "Change ring size: RxQ %u->%u, TxQ %u->%u\n",
427 nn->dp.rxd_cnt, rxd_cnt, nn->dp.txd_cnt, txd_cnt);
428
429 return nfp_net_set_ring_size(nn, rxd_cnt, txd_cnt);
430 }
431
nfp_vnic_get_sw_stats_count(struct net_device * netdev)432 static unsigned int nfp_vnic_get_sw_stats_count(struct net_device *netdev)
433 {
434 struct nfp_net *nn = netdev_priv(netdev);
435
436 return NN_RVEC_GATHER_STATS + nn->max_r_vecs * NN_RVEC_PER_Q_STATS +
437 NN_CTRL_PATH_STATS;
438 }
439
nfp_vnic_get_sw_stats_strings(struct net_device * netdev,u8 * data)440 static u8 *nfp_vnic_get_sw_stats_strings(struct net_device *netdev, u8 *data)
441 {
442 struct nfp_net *nn = netdev_priv(netdev);
443 int i;
444
445 for (i = 0; i < nn->max_r_vecs; i++) {
446 ethtool_sprintf(&data, "rvec_%u_rx_pkts", i);
447 ethtool_sprintf(&data, "rvec_%u_tx_pkts", i);
448 ethtool_sprintf(&data, "rvec_%u_tx_busy", i);
449 }
450
451 ethtool_sprintf(&data, "hw_rx_csum_ok");
452 ethtool_sprintf(&data, "hw_rx_csum_inner_ok");
453 ethtool_sprintf(&data, "hw_rx_csum_complete");
454 ethtool_sprintf(&data, "hw_rx_csum_err");
455 ethtool_sprintf(&data, "rx_replace_buf_alloc_fail");
456 ethtool_sprintf(&data, "rx_tls_decrypted_packets");
457 ethtool_sprintf(&data, "hw_tx_csum");
458 ethtool_sprintf(&data, "hw_tx_inner_csum");
459 ethtool_sprintf(&data, "tx_gather");
460 ethtool_sprintf(&data, "tx_lso");
461 ethtool_sprintf(&data, "tx_tls_encrypted_packets");
462 ethtool_sprintf(&data, "tx_tls_ooo");
463 ethtool_sprintf(&data, "tx_tls_drop_no_sync_data");
464
465 ethtool_sprintf(&data, "hw_tls_no_space");
466 ethtool_sprintf(&data, "rx_tls_resync_req_ok");
467 ethtool_sprintf(&data, "rx_tls_resync_req_ign");
468 ethtool_sprintf(&data, "rx_tls_resync_sent");
469
470 return data;
471 }
472
nfp_vnic_get_sw_stats(struct net_device * netdev,u64 * data)473 static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data)
474 {
475 u64 gathered_stats[NN_RVEC_GATHER_STATS] = {};
476 struct nfp_net *nn = netdev_priv(netdev);
477 u64 tmp[NN_RVEC_GATHER_STATS];
478 unsigned int i, j;
479
480 for (i = 0; i < nn->max_r_vecs; i++) {
481 unsigned int start;
482
483 do {
484 start = u64_stats_fetch_begin(&nn->r_vecs[i].rx_sync);
485 data[0] = nn->r_vecs[i].rx_pkts;
486 tmp[0] = nn->r_vecs[i].hw_csum_rx_ok;
487 tmp[1] = nn->r_vecs[i].hw_csum_rx_inner_ok;
488 tmp[2] = nn->r_vecs[i].hw_csum_rx_complete;
489 tmp[3] = nn->r_vecs[i].hw_csum_rx_error;
490 tmp[4] = nn->r_vecs[i].rx_replace_buf_alloc_fail;
491 tmp[5] = nn->r_vecs[i].hw_tls_rx;
492 } while (u64_stats_fetch_retry(&nn->r_vecs[i].rx_sync, start));
493
494 do {
495 start = u64_stats_fetch_begin(&nn->r_vecs[i].tx_sync);
496 data[1] = nn->r_vecs[i].tx_pkts;
497 data[2] = nn->r_vecs[i].tx_busy;
498 tmp[6] = nn->r_vecs[i].hw_csum_tx;
499 tmp[7] = nn->r_vecs[i].hw_csum_tx_inner;
500 tmp[8] = nn->r_vecs[i].tx_gather;
501 tmp[9] = nn->r_vecs[i].tx_lso;
502 tmp[10] = nn->r_vecs[i].hw_tls_tx;
503 tmp[11] = nn->r_vecs[i].tls_tx_fallback;
504 tmp[12] = nn->r_vecs[i].tls_tx_no_fallback;
505 } while (u64_stats_fetch_retry(&nn->r_vecs[i].tx_sync, start));
506
507 data += NN_RVEC_PER_Q_STATS;
508
509 for (j = 0; j < NN_RVEC_GATHER_STATS; j++)
510 gathered_stats[j] += tmp[j];
511 }
512
513 for (j = 0; j < NN_RVEC_GATHER_STATS; j++)
514 *data++ = gathered_stats[j];
515
516 *data++ = atomic_read(&nn->ktls_no_space);
517 *data++ = atomic_read(&nn->ktls_rx_resync_req);
518 *data++ = atomic_read(&nn->ktls_rx_resync_ign);
519 *data++ = atomic_read(&nn->ktls_rx_resync_sent);
520
521 return data;
522 }
523
nfp_vnic_get_hw_stats_count(unsigned int num_vecs)524 static unsigned int nfp_vnic_get_hw_stats_count(unsigned int num_vecs)
525 {
526 return NN_ET_GLOBAL_STATS_LEN + num_vecs * 4;
527 }
528
529 static u8 *
nfp_vnic_get_hw_stats_strings(u8 * data,unsigned int num_vecs,bool repr)530 nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int num_vecs, bool repr)
531 {
532 int swap_off, i;
533
534 BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2);
535 /* If repr is true first add SWITCH_STATS_LEN and then subtract it
536 * effectively swapping the RX and TX statistics (giving us the RX
537 * and TX from perspective of the switch).
538 */
539 swap_off = repr * NN_ET_SWITCH_STATS_LEN;
540
541 for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++)
542 ethtool_sprintf(&data, nfp_net_et_stats[i + swap_off].name);
543
544 for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++)
545 ethtool_sprintf(&data, nfp_net_et_stats[i - swap_off].name);
546
547 for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++)
548 ethtool_sprintf(&data, nfp_net_et_stats[i].name);
549
550 for (i = 0; i < num_vecs; i++) {
551 ethtool_sprintf(&data, "rxq_%u_pkts", i);
552 ethtool_sprintf(&data, "rxq_%u_bytes", i);
553 ethtool_sprintf(&data, "txq_%u_pkts", i);
554 ethtool_sprintf(&data, "txq_%u_bytes", i);
555 }
556
557 return data;
558 }
559
560 static u64 *
nfp_vnic_get_hw_stats(u64 * data,u8 __iomem * mem,unsigned int num_vecs)561 nfp_vnic_get_hw_stats(u64 *data, u8 __iomem *mem, unsigned int num_vecs)
562 {
563 unsigned int i;
564
565 for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++)
566 *data++ = readq(mem + nfp_net_et_stats[i].off);
567
568 for (i = 0; i < num_vecs; i++) {
569 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i));
570 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8);
571 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i));
572 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8);
573 }
574
575 return data;
576 }
577
nfp_vnic_get_tlv_stats_count(struct nfp_net * nn)578 static unsigned int nfp_vnic_get_tlv_stats_count(struct nfp_net *nn)
579 {
580 return nn->tlv_caps.vnic_stats_cnt + nn->max_r_vecs * 4;
581 }
582
nfp_vnic_get_tlv_stats_strings(struct nfp_net * nn,u8 * data)583 static u8 *nfp_vnic_get_tlv_stats_strings(struct nfp_net *nn, u8 *data)
584 {
585 unsigned int i, id;
586 u8 __iomem *mem;
587 u64 id_word = 0;
588
589 mem = nn->dp.ctrl_bar + nn->tlv_caps.vnic_stats_off;
590 for (i = 0; i < nn->tlv_caps.vnic_stats_cnt; i++) {
591 if (!(i % 4))
592 id_word = readq(mem + i * 2);
593
594 id = (u16)id_word;
595 id_word >>= 16;
596
597 if (id < ARRAY_SIZE(nfp_tlv_stat_names) &&
598 nfp_tlv_stat_names[id][0]) {
599 memcpy(data, nfp_tlv_stat_names[id], ETH_GSTRING_LEN);
600 data += ETH_GSTRING_LEN;
601 } else {
602 ethtool_sprintf(&data, "dev_unknown_stat%u", id);
603 }
604 }
605
606 for (i = 0; i < nn->max_r_vecs; i++) {
607 ethtool_sprintf(&data, "rxq_%u_pkts", i);
608 ethtool_sprintf(&data, "rxq_%u_bytes", i);
609 ethtool_sprintf(&data, "txq_%u_pkts", i);
610 ethtool_sprintf(&data, "txq_%u_bytes", i);
611 }
612
613 return data;
614 }
615
nfp_vnic_get_tlv_stats(struct nfp_net * nn,u64 * data)616 static u64 *nfp_vnic_get_tlv_stats(struct nfp_net *nn, u64 *data)
617 {
618 u8 __iomem *mem;
619 unsigned int i;
620
621 mem = nn->dp.ctrl_bar + nn->tlv_caps.vnic_stats_off;
622 mem += roundup(2 * nn->tlv_caps.vnic_stats_cnt, 8);
623 for (i = 0; i < nn->tlv_caps.vnic_stats_cnt; i++)
624 *data++ = readq(mem + i * 8);
625
626 mem = nn->dp.ctrl_bar;
627 for (i = 0; i < nn->max_r_vecs; i++) {
628 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i));
629 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8);
630 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i));
631 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8);
632 }
633
634 return data;
635 }
636
nfp_mac_get_stats_count(struct net_device * netdev)637 static unsigned int nfp_mac_get_stats_count(struct net_device *netdev)
638 {
639 struct nfp_port *port;
640
641 port = nfp_port_from_netdev(netdev);
642 if (!__nfp_port_get_eth_port(port) || !port->eth_stats)
643 return 0;
644
645 return ARRAY_SIZE(nfp_mac_et_stats);
646 }
647
nfp_mac_get_stats_strings(struct net_device * netdev,u8 * data)648 static u8 *nfp_mac_get_stats_strings(struct net_device *netdev, u8 *data)
649 {
650 struct nfp_port *port;
651 unsigned int i;
652
653 port = nfp_port_from_netdev(netdev);
654 if (!__nfp_port_get_eth_port(port) || !port->eth_stats)
655 return data;
656
657 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++)
658 ethtool_sprintf(&data, "mac.%s", nfp_mac_et_stats[i].name);
659
660 return data;
661 }
662
nfp_mac_get_stats(struct net_device * netdev,u64 * data)663 static u64 *nfp_mac_get_stats(struct net_device *netdev, u64 *data)
664 {
665 struct nfp_port *port;
666 unsigned int i;
667
668 port = nfp_port_from_netdev(netdev);
669 if (!__nfp_port_get_eth_port(port) || !port->eth_stats)
670 return data;
671
672 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++)
673 *data++ = readq(port->eth_stats + nfp_mac_et_stats[i].off);
674
675 return data;
676 }
677
nfp_net_get_strings(struct net_device * netdev,u32 stringset,u8 * data)678 static void nfp_net_get_strings(struct net_device *netdev,
679 u32 stringset, u8 *data)
680 {
681 struct nfp_net *nn = netdev_priv(netdev);
682
683 switch (stringset) {
684 case ETH_SS_STATS:
685 data = nfp_vnic_get_sw_stats_strings(netdev, data);
686 if (!nn->tlv_caps.vnic_stats_off)
687 data = nfp_vnic_get_hw_stats_strings(data,
688 nn->max_r_vecs,
689 false);
690 else
691 data = nfp_vnic_get_tlv_stats_strings(nn, data);
692 data = nfp_mac_get_stats_strings(netdev, data);
693 data = nfp_app_port_get_stats_strings(nn->port, data);
694 break;
695 }
696 }
697
698 static void
nfp_net_get_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)699 nfp_net_get_stats(struct net_device *netdev, struct ethtool_stats *stats,
700 u64 *data)
701 {
702 struct nfp_net *nn = netdev_priv(netdev);
703
704 data = nfp_vnic_get_sw_stats(netdev, data);
705 if (!nn->tlv_caps.vnic_stats_off)
706 data = nfp_vnic_get_hw_stats(data, nn->dp.ctrl_bar,
707 nn->max_r_vecs);
708 else
709 data = nfp_vnic_get_tlv_stats(nn, data);
710 data = nfp_mac_get_stats(netdev, data);
711 data = nfp_app_port_get_stats(nn->port, data);
712 }
713
nfp_net_get_sset_count(struct net_device * netdev,int sset)714 static int nfp_net_get_sset_count(struct net_device *netdev, int sset)
715 {
716 struct nfp_net *nn = netdev_priv(netdev);
717 unsigned int cnt;
718
719 switch (sset) {
720 case ETH_SS_STATS:
721 cnt = nfp_vnic_get_sw_stats_count(netdev);
722 if (!nn->tlv_caps.vnic_stats_off)
723 cnt += nfp_vnic_get_hw_stats_count(nn->max_r_vecs);
724 else
725 cnt += nfp_vnic_get_tlv_stats_count(nn);
726 cnt += nfp_mac_get_stats_count(netdev);
727 cnt += nfp_app_port_get_stats_count(nn->port);
728 return cnt;
729 default:
730 return -EOPNOTSUPP;
731 }
732 }
733
nfp_port_get_strings(struct net_device * netdev,u32 stringset,u8 * data)734 static void nfp_port_get_strings(struct net_device *netdev,
735 u32 stringset, u8 *data)
736 {
737 struct nfp_port *port = nfp_port_from_netdev(netdev);
738
739 switch (stringset) {
740 case ETH_SS_STATS:
741 if (nfp_port_is_vnic(port))
742 data = nfp_vnic_get_hw_stats_strings(data, 0, true);
743 else
744 data = nfp_mac_get_stats_strings(netdev, data);
745 data = nfp_app_port_get_stats_strings(port, data);
746 break;
747 }
748 }
749
750 static void
nfp_port_get_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)751 nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats,
752 u64 *data)
753 {
754 struct nfp_port *port = nfp_port_from_netdev(netdev);
755
756 if (nfp_port_is_vnic(port))
757 data = nfp_vnic_get_hw_stats(data, port->vnic, 0);
758 else
759 data = nfp_mac_get_stats(netdev, data);
760 data = nfp_app_port_get_stats(port, data);
761 }
762
nfp_port_get_sset_count(struct net_device * netdev,int sset)763 static int nfp_port_get_sset_count(struct net_device *netdev, int sset)
764 {
765 struct nfp_port *port = nfp_port_from_netdev(netdev);
766 unsigned int count;
767
768 switch (sset) {
769 case ETH_SS_STATS:
770 if (nfp_port_is_vnic(port))
771 count = nfp_vnic_get_hw_stats_count(0);
772 else
773 count = nfp_mac_get_stats_count(netdev);
774 count += nfp_app_port_get_stats_count(port);
775 return count;
776 default:
777 return -EOPNOTSUPP;
778 }
779 }
780
nfp_port_fec_ethtool_to_nsp(u32 fec)781 static int nfp_port_fec_ethtool_to_nsp(u32 fec)
782 {
783 switch (fec) {
784 case ETHTOOL_FEC_AUTO:
785 return NFP_FEC_AUTO_BIT;
786 case ETHTOOL_FEC_OFF:
787 return NFP_FEC_DISABLED_BIT;
788 case ETHTOOL_FEC_RS:
789 return NFP_FEC_REED_SOLOMON_BIT;
790 case ETHTOOL_FEC_BASER:
791 return NFP_FEC_BASER_BIT;
792 default:
793 /* NSP only supports a single mode at a time */
794 return -EOPNOTSUPP;
795 }
796 }
797
nfp_port_fec_nsp_to_ethtool(u32 fec)798 static u32 nfp_port_fec_nsp_to_ethtool(u32 fec)
799 {
800 u32 result = 0;
801
802 if (fec & NFP_FEC_AUTO)
803 result |= ETHTOOL_FEC_AUTO;
804 if (fec & NFP_FEC_BASER)
805 result |= ETHTOOL_FEC_BASER;
806 if (fec & NFP_FEC_REED_SOLOMON)
807 result |= ETHTOOL_FEC_RS;
808 if (fec & NFP_FEC_DISABLED)
809 result |= ETHTOOL_FEC_OFF;
810
811 return result ?: ETHTOOL_FEC_NONE;
812 }
813
814 static int
nfp_port_get_fecparam(struct net_device * netdev,struct ethtool_fecparam * param)815 nfp_port_get_fecparam(struct net_device *netdev,
816 struct ethtool_fecparam *param)
817 {
818 struct nfp_eth_table_port *eth_port;
819 struct nfp_port *port;
820
821 param->active_fec = ETHTOOL_FEC_NONE;
822 param->fec = ETHTOOL_FEC_NONE;
823
824 port = nfp_port_from_netdev(netdev);
825 eth_port = nfp_port_get_eth_port(port);
826 if (!eth_port)
827 return -EOPNOTSUPP;
828
829 if (!nfp_eth_can_support_fec(eth_port))
830 return 0;
831
832 param->fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec_modes_supported);
833 param->active_fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec);
834
835 return 0;
836 }
837
838 static int
nfp_port_set_fecparam(struct net_device * netdev,struct ethtool_fecparam * param)839 nfp_port_set_fecparam(struct net_device *netdev,
840 struct ethtool_fecparam *param)
841 {
842 struct nfp_eth_table_port *eth_port;
843 struct nfp_port *port;
844 int err, fec;
845
846 port = nfp_port_from_netdev(netdev);
847 eth_port = nfp_port_get_eth_port(port);
848 if (!eth_port)
849 return -EOPNOTSUPP;
850
851 if (!nfp_eth_can_support_fec(eth_port))
852 return -EOPNOTSUPP;
853
854 fec = nfp_port_fec_ethtool_to_nsp(param->fec);
855 if (fec < 0)
856 return fec;
857
858 err = nfp_eth_set_fec(port->app->cpp, eth_port->index, fec);
859 if (!err)
860 /* Only refresh if we did something */
861 nfp_net_refresh_port_table(port);
862
863 return err < 0 ? err : 0;
864 }
865
866 /* RX network flow classification (RSS, filters, etc)
867 */
ethtool_flow_to_nfp_flag(u32 flow_type)868 static u32 ethtool_flow_to_nfp_flag(u32 flow_type)
869 {
870 static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = {
871 [TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP,
872 [TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP,
873 [UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP,
874 [UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP,
875 [IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4,
876 [IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6,
877 };
878
879 if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp))
880 return 0;
881
882 return xlate_ethtool_to_nfp[flow_type];
883 }
884
nfp_net_get_rss_hash_opts(struct nfp_net * nn,struct ethtool_rxnfc * cmd)885 static int nfp_net_get_rss_hash_opts(struct nfp_net *nn,
886 struct ethtool_rxnfc *cmd)
887 {
888 u32 nfp_rss_flag;
889
890 cmd->data = 0;
891
892 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
893 return -EOPNOTSUPP;
894
895 nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type);
896 if (!nfp_rss_flag)
897 return -EINVAL;
898
899 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
900 if (nn->rss_cfg & nfp_rss_flag)
901 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
902
903 return 0;
904 }
905
nfp_net_get_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * cmd,u32 * rule_locs)906 static int nfp_net_get_rxnfc(struct net_device *netdev,
907 struct ethtool_rxnfc *cmd, u32 *rule_locs)
908 {
909 struct nfp_net *nn = netdev_priv(netdev);
910
911 switch (cmd->cmd) {
912 case ETHTOOL_GRXRINGS:
913 cmd->data = nn->dp.num_rx_rings;
914 return 0;
915 case ETHTOOL_GRXFH:
916 return nfp_net_get_rss_hash_opts(nn, cmd);
917 default:
918 return -EOPNOTSUPP;
919 }
920 }
921
nfp_net_set_rss_hash_opt(struct nfp_net * nn,struct ethtool_rxnfc * nfc)922 static int nfp_net_set_rss_hash_opt(struct nfp_net *nn,
923 struct ethtool_rxnfc *nfc)
924 {
925 u32 new_rss_cfg = nn->rss_cfg;
926 u32 nfp_rss_flag;
927 int err;
928
929 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
930 return -EOPNOTSUPP;
931
932 /* RSS only supports IP SA/DA and L4 src/dst ports */
933 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
934 RXH_L4_B_0_1 | RXH_L4_B_2_3))
935 return -EINVAL;
936
937 /* We need at least the IP SA/DA fields for hashing */
938 if (!(nfc->data & RXH_IP_SRC) ||
939 !(nfc->data & RXH_IP_DST))
940 return -EINVAL;
941
942 nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type);
943 if (!nfp_rss_flag)
944 return -EINVAL;
945
946 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
947 case 0:
948 new_rss_cfg &= ~nfp_rss_flag;
949 break;
950 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
951 new_rss_cfg |= nfp_rss_flag;
952 break;
953 default:
954 return -EINVAL;
955 }
956
957 new_rss_cfg |= FIELD_PREP(NFP_NET_CFG_RSS_HFUNC, nn->rss_hfunc);
958 new_rss_cfg |= NFP_NET_CFG_RSS_MASK;
959
960 if (new_rss_cfg == nn->rss_cfg)
961 return 0;
962
963 writel(new_rss_cfg, nn->dp.ctrl_bar + NFP_NET_CFG_RSS_CTRL);
964 err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS);
965 if (err)
966 return err;
967
968 nn->rss_cfg = new_rss_cfg;
969
970 nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg);
971 return 0;
972 }
973
nfp_net_set_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * cmd)974 static int nfp_net_set_rxnfc(struct net_device *netdev,
975 struct ethtool_rxnfc *cmd)
976 {
977 struct nfp_net *nn = netdev_priv(netdev);
978
979 switch (cmd->cmd) {
980 case ETHTOOL_SRXFH:
981 return nfp_net_set_rss_hash_opt(nn, cmd);
982 default:
983 return -EOPNOTSUPP;
984 }
985 }
986
nfp_net_get_rxfh_indir_size(struct net_device * netdev)987 static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev)
988 {
989 struct nfp_net *nn = netdev_priv(netdev);
990
991 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
992 return 0;
993
994 return ARRAY_SIZE(nn->rss_itbl);
995 }
996
nfp_net_get_rxfh_key_size(struct net_device * netdev)997 static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev)
998 {
999 struct nfp_net *nn = netdev_priv(netdev);
1000
1001 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
1002 return -EOPNOTSUPP;
1003
1004 return nfp_net_rss_key_sz(nn);
1005 }
1006
nfp_net_get_rxfh(struct net_device * netdev,u32 * indir,u8 * key,u8 * hfunc)1007 static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
1008 u8 *hfunc)
1009 {
1010 struct nfp_net *nn = netdev_priv(netdev);
1011 int i;
1012
1013 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
1014 return -EOPNOTSUPP;
1015
1016 if (indir)
1017 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++)
1018 indir[i] = nn->rss_itbl[i];
1019 if (key)
1020 memcpy(key, nn->rss_key, nfp_net_rss_key_sz(nn));
1021 if (hfunc) {
1022 *hfunc = nn->rss_hfunc;
1023 if (*hfunc >= 1 << ETH_RSS_HASH_FUNCS_COUNT)
1024 *hfunc = ETH_RSS_HASH_UNKNOWN;
1025 }
1026
1027 return 0;
1028 }
1029
nfp_net_set_rxfh(struct net_device * netdev,const u32 * indir,const u8 * key,const u8 hfunc)1030 static int nfp_net_set_rxfh(struct net_device *netdev,
1031 const u32 *indir, const u8 *key,
1032 const u8 hfunc)
1033 {
1034 struct nfp_net *nn = netdev_priv(netdev);
1035 int i;
1036
1037 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY) ||
1038 !(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == nn->rss_hfunc))
1039 return -EOPNOTSUPP;
1040
1041 if (!key && !indir)
1042 return 0;
1043
1044 if (key) {
1045 memcpy(nn->rss_key, key, nfp_net_rss_key_sz(nn));
1046 nfp_net_rss_write_key(nn);
1047 }
1048 if (indir) {
1049 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++)
1050 nn->rss_itbl[i] = indir[i];
1051
1052 nfp_net_rss_write_itbl(nn);
1053 }
1054
1055 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS);
1056 }
1057
1058 /* Dump BAR registers
1059 */
nfp_net_get_regs_len(struct net_device * netdev)1060 static int nfp_net_get_regs_len(struct net_device *netdev)
1061 {
1062 return NFP_NET_CFG_BAR_SZ;
1063 }
1064
nfp_net_get_regs(struct net_device * netdev,struct ethtool_regs * regs,void * p)1065 static void nfp_net_get_regs(struct net_device *netdev,
1066 struct ethtool_regs *regs, void *p)
1067 {
1068 struct nfp_net *nn = netdev_priv(netdev);
1069 u32 *regs_buf = p;
1070 int i;
1071
1072 regs->version = nn_readl(nn, NFP_NET_CFG_VERSION);
1073
1074 for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++)
1075 regs_buf[i] = readl(nn->dp.ctrl_bar + (i * sizeof(u32)));
1076 }
1077
nfp_net_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec)1078 static int nfp_net_get_coalesce(struct net_device *netdev,
1079 struct ethtool_coalesce *ec)
1080 {
1081 struct nfp_net *nn = netdev_priv(netdev);
1082
1083 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD))
1084 return -EINVAL;
1085
1086 ec->rx_coalesce_usecs = nn->rx_coalesce_usecs;
1087 ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames;
1088 ec->tx_coalesce_usecs = nn->tx_coalesce_usecs;
1089 ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames;
1090
1091 return 0;
1092 }
1093
1094 /* Other debug dumps
1095 */
1096 static int
nfp_dump_nsp_diag(struct nfp_app * app,struct ethtool_dump * dump,void * buffer)1097 nfp_dump_nsp_diag(struct nfp_app *app, struct ethtool_dump *dump, void *buffer)
1098 {
1099 struct nfp_resource *res;
1100 int ret;
1101
1102 if (!app)
1103 return -EOPNOTSUPP;
1104
1105 dump->version = 1;
1106 dump->flag = NFP_DUMP_NSP_DIAG;
1107
1108 res = nfp_resource_acquire(app->cpp, NFP_RESOURCE_NSP_DIAG);
1109 if (IS_ERR(res))
1110 return PTR_ERR(res);
1111
1112 if (buffer) {
1113 if (dump->len != nfp_resource_size(res)) {
1114 ret = -EINVAL;
1115 goto exit_release;
1116 }
1117
1118 ret = nfp_cpp_read(app->cpp, nfp_resource_cpp_id(res),
1119 nfp_resource_address(res),
1120 buffer, dump->len);
1121 if (ret != dump->len)
1122 ret = ret < 0 ? ret : -EIO;
1123 else
1124 ret = 0;
1125 } else {
1126 dump->len = nfp_resource_size(res);
1127 ret = 0;
1128 }
1129 exit_release:
1130 nfp_resource_release(res);
1131
1132 return ret;
1133 }
1134
1135 /* Set the dump flag/level. Calculate the dump length for flag > 0 only (new TLV
1136 * based dumps), since flag 0 (default) calculates the length in
1137 * nfp_app_get_dump_flag(), and we need to support triggering a level 0 dump
1138 * without setting the flag first, for backward compatibility.
1139 */
nfp_app_set_dump(struct net_device * netdev,struct ethtool_dump * val)1140 static int nfp_app_set_dump(struct net_device *netdev, struct ethtool_dump *val)
1141 {
1142 struct nfp_app *app = nfp_app_from_netdev(netdev);
1143 s64 len;
1144
1145 if (!app)
1146 return -EOPNOTSUPP;
1147
1148 if (val->flag == NFP_DUMP_NSP_DIAG) {
1149 app->pf->dump_flag = val->flag;
1150 return 0;
1151 }
1152
1153 if (!app->pf->dumpspec)
1154 return -EOPNOTSUPP;
1155
1156 len = nfp_net_dump_calculate_size(app->pf, app->pf->dumpspec,
1157 val->flag);
1158 if (len < 0)
1159 return len;
1160
1161 app->pf->dump_flag = val->flag;
1162 app->pf->dump_len = len;
1163
1164 return 0;
1165 }
1166
1167 static int
nfp_app_get_dump_flag(struct net_device * netdev,struct ethtool_dump * dump)1168 nfp_app_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump)
1169 {
1170 struct nfp_app *app = nfp_app_from_netdev(netdev);
1171
1172 if (!app)
1173 return -EOPNOTSUPP;
1174
1175 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG)
1176 return nfp_dump_nsp_diag(app, dump, NULL);
1177
1178 dump->flag = app->pf->dump_flag;
1179 dump->len = app->pf->dump_len;
1180
1181 return 0;
1182 }
1183
1184 static int
nfp_app_get_dump_data(struct net_device * netdev,struct ethtool_dump * dump,void * buffer)1185 nfp_app_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump,
1186 void *buffer)
1187 {
1188 struct nfp_app *app = nfp_app_from_netdev(netdev);
1189
1190 if (!app)
1191 return -EOPNOTSUPP;
1192
1193 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG)
1194 return nfp_dump_nsp_diag(app, dump, buffer);
1195
1196 dump->flag = app->pf->dump_flag;
1197 dump->len = app->pf->dump_len;
1198
1199 return nfp_net_dump_populate_buffer(app->pf, app->pf->dumpspec, dump,
1200 buffer);
1201 }
1202
1203 static int
nfp_port_get_module_info(struct net_device * netdev,struct ethtool_modinfo * modinfo)1204 nfp_port_get_module_info(struct net_device *netdev,
1205 struct ethtool_modinfo *modinfo)
1206 {
1207 struct nfp_eth_table_port *eth_port;
1208 struct nfp_port *port;
1209 unsigned int read_len;
1210 struct nfp_nsp *nsp;
1211 int err = 0;
1212 u8 data;
1213
1214 port = nfp_port_from_netdev(netdev);
1215 eth_port = nfp_port_get_eth_port(port);
1216 if (!eth_port)
1217 return -EOPNOTSUPP;
1218
1219 nsp = nfp_nsp_open(port->app->cpp);
1220 if (IS_ERR(nsp)) {
1221 err = PTR_ERR(nsp);
1222 netdev_err(netdev, "Failed to access the NSP: %d\n", err);
1223 return err;
1224 }
1225
1226 if (!nfp_nsp_has_read_module_eeprom(nsp)) {
1227 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n");
1228 err = -EOPNOTSUPP;
1229 goto exit_close_nsp;
1230 }
1231
1232 switch (eth_port->interface) {
1233 case NFP_INTERFACE_SFP:
1234 case NFP_INTERFACE_SFP28:
1235 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index,
1236 SFP_SFF8472_COMPLIANCE, &data,
1237 1, &read_len);
1238 if (err < 0)
1239 goto exit_close_nsp;
1240
1241 if (!data) {
1242 modinfo->type = ETH_MODULE_SFF_8079;
1243 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
1244 } else {
1245 modinfo->type = ETH_MODULE_SFF_8472;
1246 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
1247 }
1248 break;
1249 case NFP_INTERFACE_QSFP:
1250 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index,
1251 SFP_SFF_REV_COMPLIANCE, &data,
1252 1, &read_len);
1253 if (err < 0)
1254 goto exit_close_nsp;
1255
1256 if (data < 0x3) {
1257 modinfo->type = ETH_MODULE_SFF_8436;
1258 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
1259 } else {
1260 modinfo->type = ETH_MODULE_SFF_8636;
1261 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
1262 }
1263 break;
1264 case NFP_INTERFACE_QSFP28:
1265 modinfo->type = ETH_MODULE_SFF_8636;
1266 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
1267 break;
1268 default:
1269 netdev_err(netdev, "Unsupported module 0x%x detected\n",
1270 eth_port->interface);
1271 err = -EINVAL;
1272 }
1273
1274 exit_close_nsp:
1275 nfp_nsp_close(nsp);
1276 return err;
1277 }
1278
1279 static int
nfp_port_get_module_eeprom(struct net_device * netdev,struct ethtool_eeprom * eeprom,u8 * data)1280 nfp_port_get_module_eeprom(struct net_device *netdev,
1281 struct ethtool_eeprom *eeprom, u8 *data)
1282 {
1283 struct nfp_eth_table_port *eth_port;
1284 struct nfp_port *port;
1285 struct nfp_nsp *nsp;
1286 int err;
1287
1288 port = nfp_port_from_netdev(netdev);
1289 eth_port = __nfp_port_get_eth_port(port);
1290 if (!eth_port)
1291 return -EOPNOTSUPP;
1292
1293 nsp = nfp_nsp_open(port->app->cpp);
1294 if (IS_ERR(nsp)) {
1295 err = PTR_ERR(nsp);
1296 netdev_err(netdev, "Failed to access the NSP: %d\n", err);
1297 return err;
1298 }
1299
1300 if (!nfp_nsp_has_read_module_eeprom(nsp)) {
1301 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n");
1302 err = -EOPNOTSUPP;
1303 goto exit_close_nsp;
1304 }
1305
1306 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index,
1307 eeprom->offset, data, eeprom->len,
1308 &eeprom->len);
1309 if (err < 0) {
1310 if (eeprom->len) {
1311 netdev_warn(netdev,
1312 "Incomplete read from module EEPROM: %d\n",
1313 err);
1314 err = 0;
1315 } else {
1316 netdev_err(netdev,
1317 "Reading from module EEPROM failed: %d\n",
1318 err);
1319 }
1320 }
1321
1322 exit_close_nsp:
1323 nfp_nsp_close(nsp);
1324 return err;
1325 }
1326
nfp_net_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec)1327 static int nfp_net_set_coalesce(struct net_device *netdev,
1328 struct ethtool_coalesce *ec)
1329 {
1330 struct nfp_net *nn = netdev_priv(netdev);
1331 unsigned int factor;
1332
1333 /* Compute factor used to convert coalesce '_usecs' parameters to
1334 * ME timestamp ticks. There are 16 ME clock cycles for each timestamp
1335 * count.
1336 */
1337 factor = nn->me_freq_mhz / 16;
1338
1339 /* Each pair of (usecs, max_frames) fields specifies that interrupts
1340 * should be coalesced until
1341 * (usecs > 0 && time_since_first_completion >= usecs) ||
1342 * (max_frames > 0 && completed_frames >= max_frames)
1343 *
1344 * It is illegal to set both usecs and max_frames to zero as this would
1345 * cause interrupts to never be generated. To disable coalescing, set
1346 * usecs = 0 and max_frames = 1.
1347 *
1348 * Some implementations ignore the value of max_frames and use the
1349 * condition time_since_first_completion >= usecs
1350 */
1351
1352 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD))
1353 return -EINVAL;
1354
1355 /* ensure valid configuration */
1356 if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames)
1357 return -EINVAL;
1358
1359 if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames)
1360 return -EINVAL;
1361
1362 if (ec->rx_coalesce_usecs * factor >= ((1 << 16) - 1))
1363 return -EINVAL;
1364
1365 if (ec->tx_coalesce_usecs * factor >= ((1 << 16) - 1))
1366 return -EINVAL;
1367
1368 if (ec->rx_max_coalesced_frames >= ((1 << 16) - 1))
1369 return -EINVAL;
1370
1371 if (ec->tx_max_coalesced_frames >= ((1 << 16) - 1))
1372 return -EINVAL;
1373
1374 /* configuration is valid */
1375 nn->rx_coalesce_usecs = ec->rx_coalesce_usecs;
1376 nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames;
1377 nn->tx_coalesce_usecs = ec->tx_coalesce_usecs;
1378 nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames;
1379
1380 /* write configuration to device */
1381 nfp_net_coalesce_write_cfg(nn);
1382 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD);
1383 }
1384
nfp_net_get_channels(struct net_device * netdev,struct ethtool_channels * channel)1385 static void nfp_net_get_channels(struct net_device *netdev,
1386 struct ethtool_channels *channel)
1387 {
1388 struct nfp_net *nn = netdev_priv(netdev);
1389 unsigned int num_tx_rings;
1390
1391 num_tx_rings = nn->dp.num_tx_rings;
1392 if (nn->dp.xdp_prog)
1393 num_tx_rings -= nn->dp.num_rx_rings;
1394
1395 channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs);
1396 channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs);
1397 channel->max_combined = min(channel->max_rx, channel->max_tx);
1398 channel->max_other = NFP_NET_NON_Q_VECTORS;
1399 channel->combined_count = min(nn->dp.num_rx_rings, num_tx_rings);
1400 channel->rx_count = nn->dp.num_rx_rings - channel->combined_count;
1401 channel->tx_count = num_tx_rings - channel->combined_count;
1402 channel->other_count = NFP_NET_NON_Q_VECTORS;
1403 }
1404
nfp_net_set_num_rings(struct nfp_net * nn,unsigned int total_rx,unsigned int total_tx)1405 static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx,
1406 unsigned int total_tx)
1407 {
1408 struct nfp_net_dp *dp;
1409
1410 dp = nfp_net_clone_dp(nn);
1411 if (!dp)
1412 return -ENOMEM;
1413
1414 dp->num_rx_rings = total_rx;
1415 dp->num_tx_rings = total_tx;
1416 /* nfp_net_check_config() will catch num_tx_rings > nn->max_tx_rings */
1417 if (dp->xdp_prog)
1418 dp->num_tx_rings += total_rx;
1419
1420 return nfp_net_ring_reconfig(nn, dp, NULL);
1421 }
1422
nfp_net_set_channels(struct net_device * netdev,struct ethtool_channels * channel)1423 static int nfp_net_set_channels(struct net_device *netdev,
1424 struct ethtool_channels *channel)
1425 {
1426 struct nfp_net *nn = netdev_priv(netdev);
1427 unsigned int total_rx, total_tx;
1428
1429 /* Reject unsupported */
1430 if (channel->other_count != NFP_NET_NON_Q_VECTORS ||
1431 (channel->rx_count && channel->tx_count))
1432 return -EINVAL;
1433
1434 total_rx = channel->combined_count + channel->rx_count;
1435 total_tx = channel->combined_count + channel->tx_count;
1436
1437 if (total_rx > min(nn->max_rx_rings, nn->max_r_vecs) ||
1438 total_tx > min(nn->max_tx_rings, nn->max_r_vecs))
1439 return -EINVAL;
1440
1441 return nfp_net_set_num_rings(nn, total_rx, total_tx);
1442 }
1443
1444 static const struct ethtool_ops nfp_net_ethtool_ops = {
1445 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1446 ETHTOOL_COALESCE_MAX_FRAMES,
1447 .get_drvinfo = nfp_net_get_drvinfo,
1448 .get_link = ethtool_op_get_link,
1449 .get_ringparam = nfp_net_get_ringparam,
1450 .set_ringparam = nfp_net_set_ringparam,
1451 .get_strings = nfp_net_get_strings,
1452 .get_ethtool_stats = nfp_net_get_stats,
1453 .get_sset_count = nfp_net_get_sset_count,
1454 .get_rxnfc = nfp_net_get_rxnfc,
1455 .set_rxnfc = nfp_net_set_rxnfc,
1456 .get_rxfh_indir_size = nfp_net_get_rxfh_indir_size,
1457 .get_rxfh_key_size = nfp_net_get_rxfh_key_size,
1458 .get_rxfh = nfp_net_get_rxfh,
1459 .set_rxfh = nfp_net_set_rxfh,
1460 .get_regs_len = nfp_net_get_regs_len,
1461 .get_regs = nfp_net_get_regs,
1462 .set_dump = nfp_app_set_dump,
1463 .get_dump_flag = nfp_app_get_dump_flag,
1464 .get_dump_data = nfp_app_get_dump_data,
1465 .get_module_info = nfp_port_get_module_info,
1466 .get_module_eeprom = nfp_port_get_module_eeprom,
1467 .get_coalesce = nfp_net_get_coalesce,
1468 .set_coalesce = nfp_net_set_coalesce,
1469 .get_channels = nfp_net_get_channels,
1470 .set_channels = nfp_net_set_channels,
1471 .get_link_ksettings = nfp_net_get_link_ksettings,
1472 .set_link_ksettings = nfp_net_set_link_ksettings,
1473 .get_fecparam = nfp_port_get_fecparam,
1474 .set_fecparam = nfp_port_set_fecparam,
1475 };
1476
1477 const struct ethtool_ops nfp_port_ethtool_ops = {
1478 .get_drvinfo = nfp_app_get_drvinfo,
1479 .get_link = ethtool_op_get_link,
1480 .get_strings = nfp_port_get_strings,
1481 .get_ethtool_stats = nfp_port_get_stats,
1482 .get_sset_count = nfp_port_get_sset_count,
1483 .set_dump = nfp_app_set_dump,
1484 .get_dump_flag = nfp_app_get_dump_flag,
1485 .get_dump_data = nfp_app_get_dump_data,
1486 .get_module_info = nfp_port_get_module_info,
1487 .get_module_eeprom = nfp_port_get_module_eeprom,
1488 .get_link_ksettings = nfp_net_get_link_ksettings,
1489 .set_link_ksettings = nfp_net_set_link_ksettings,
1490 .get_fecparam = nfp_port_get_fecparam,
1491 .set_fecparam = nfp_port_set_fecparam,
1492 };
1493
nfp_net_set_ethtool_ops(struct net_device * netdev)1494 void nfp_net_set_ethtool_ops(struct net_device *netdev)
1495 {
1496 netdev->ethtool_ops = &nfp_net_ethtool_ops;
1497 }
1498