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WIP FPC-III support
[linux/fpc-iii.git] / drivers / net / ethernet / netronome / nfp / nfp_net_ethtool.c
blob9c9ae33d84ce987a33f16bb5ef093a828c018623
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
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
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
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
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
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
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
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
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
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
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
432 __printf(2, 3) u8 *nfp_pr_et(u8 *data, const char *fmt, ...)
433 {
434 va_list args;
435
436 va_start(args, fmt);
437 vsnprintf(data, ETH_GSTRING_LEN, fmt, args);
438 va_end(args);
439
440 return data + ETH_GSTRING_LEN;
441 }
442
443 static unsigned int nfp_vnic_get_sw_stats_count(struct net_device *netdev)
444 {
445 struct nfp_net *nn = netdev_priv(netdev);
446
447 return NN_RVEC_GATHER_STATS + nn->max_r_vecs * NN_RVEC_PER_Q_STATS +
448 NN_CTRL_PATH_STATS;
449 }
450
451 static u8 *nfp_vnic_get_sw_stats_strings(struct net_device *netdev, u8 *data)
452 {
453 struct nfp_net *nn = netdev_priv(netdev);
454 int i;
455
456 for (i = 0; i < nn->max_r_vecs; i++) {
457 data = nfp_pr_et(data, "rvec_%u_rx_pkts", i);
458 data = nfp_pr_et(data, "rvec_%u_tx_pkts", i);
459 data = nfp_pr_et(data, "rvec_%u_tx_busy", i);
460 }
461
462 data = nfp_pr_et(data, "hw_rx_csum_ok");
463 data = nfp_pr_et(data, "hw_rx_csum_inner_ok");
464 data = nfp_pr_et(data, "hw_rx_csum_complete");
465 data = nfp_pr_et(data, "hw_rx_csum_err");
466 data = nfp_pr_et(data, "rx_replace_buf_alloc_fail");
467 data = nfp_pr_et(data, "rx_tls_decrypted_packets");
468 data = nfp_pr_et(data, "hw_tx_csum");
469 data = nfp_pr_et(data, "hw_tx_inner_csum");
470 data = nfp_pr_et(data, "tx_gather");
471 data = nfp_pr_et(data, "tx_lso");
472 data = nfp_pr_et(data, "tx_tls_encrypted_packets");
473 data = nfp_pr_et(data, "tx_tls_ooo");
474 data = nfp_pr_et(data, "tx_tls_drop_no_sync_data");
475
476 data = nfp_pr_et(data, "hw_tls_no_space");
477 data = nfp_pr_et(data, "rx_tls_resync_req_ok");
478 data = nfp_pr_et(data, "rx_tls_resync_req_ign");
479 data = nfp_pr_et(data, "rx_tls_resync_sent");
480
481 return data;
482 }
483
484 static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data)
485 {
486 u64 gathered_stats[NN_RVEC_GATHER_STATS] = {};
487 struct nfp_net *nn = netdev_priv(netdev);
488 u64 tmp[NN_RVEC_GATHER_STATS];
489 unsigned int i, j;
490
491 for (i = 0; i < nn->max_r_vecs; i++) {
492 unsigned int start;
493
494 do {
495 start = u64_stats_fetch_begin(&nn->r_vecs[i].rx_sync);
496 data[0] = nn->r_vecs[i].rx_pkts;
497 tmp[0] = nn->r_vecs[i].hw_csum_rx_ok;
498 tmp[1] = nn->r_vecs[i].hw_csum_rx_inner_ok;
499 tmp[2] = nn->r_vecs[i].hw_csum_rx_complete;
500 tmp[3] = nn->r_vecs[i].hw_csum_rx_error;
501 tmp[4] = nn->r_vecs[i].rx_replace_buf_alloc_fail;
502 tmp[5] = nn->r_vecs[i].hw_tls_rx;
503 } while (u64_stats_fetch_retry(&nn->r_vecs[i].rx_sync, start));
504
505 do {
506 start = u64_stats_fetch_begin(&nn->r_vecs[i].tx_sync);
507 data[1] = nn->r_vecs[i].tx_pkts;
508 data[2] = nn->r_vecs[i].tx_busy;
509 tmp[6] = nn->r_vecs[i].hw_csum_tx;
510 tmp[7] = nn->r_vecs[i].hw_csum_tx_inner;
511 tmp[8] = nn->r_vecs[i].tx_gather;
512 tmp[9] = nn->r_vecs[i].tx_lso;
513 tmp[10] = nn->r_vecs[i].hw_tls_tx;
514 tmp[11] = nn->r_vecs[i].tls_tx_fallback;
515 tmp[12] = nn->r_vecs[i].tls_tx_no_fallback;
516 } while (u64_stats_fetch_retry(&nn->r_vecs[i].tx_sync, start));
517
518 data += NN_RVEC_PER_Q_STATS;
519
520 for (j = 0; j < NN_RVEC_GATHER_STATS; j++)
521 gathered_stats[j] += tmp[j];
522 }
523
524 for (j = 0; j < NN_RVEC_GATHER_STATS; j++)
525 *data++ = gathered_stats[j];
526
527 *data++ = atomic_read(&nn->ktls_no_space);
528 *data++ = atomic_read(&nn->ktls_rx_resync_req);
529 *data++ = atomic_read(&nn->ktls_rx_resync_ign);
530 *data++ = atomic_read(&nn->ktls_rx_resync_sent);
531
532 return data;
533 }
534
535 static unsigned int nfp_vnic_get_hw_stats_count(unsigned int num_vecs)
536 {
537 return NN_ET_GLOBAL_STATS_LEN + num_vecs * 4;
538 }
539
540 static u8 *
541 nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int num_vecs, bool repr)
542 {
543 int swap_off, i;
544
545 BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2);
546 /* If repr is true first add SWITCH_STATS_LEN and then subtract it
547 * effectively swapping the RX and TX statistics (giving us the RX
548 * and TX from perspective of the switch).
549 */
550 swap_off = repr * NN_ET_SWITCH_STATS_LEN;
551
552 for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++)
553 data = nfp_pr_et(data, nfp_net_et_stats[i + swap_off].name);
554
555 for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++)
556 data = nfp_pr_et(data, nfp_net_et_stats[i - swap_off].name);
557
558 for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++)
559 data = nfp_pr_et(data, nfp_net_et_stats[i].name);
560
561 for (i = 0; i < num_vecs; i++) {
562 data = nfp_pr_et(data, "rxq_%u_pkts", i);
563 data = nfp_pr_et(data, "rxq_%u_bytes", i);
564 data = nfp_pr_et(data, "txq_%u_pkts", i);
565 data = nfp_pr_et(data, "txq_%u_bytes", i);
566 }
567
568 return data;
569 }
570
571 static u64 *
572 nfp_vnic_get_hw_stats(u64 *data, u8 __iomem *mem, unsigned int num_vecs)
573 {
574 unsigned int i;
575
576 for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++)
577 *data++ = readq(mem + nfp_net_et_stats[i].off);
578
579 for (i = 0; i < num_vecs; i++) {
580 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i));
581 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8);
582 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i));
583 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8);
584 }
585
586 return data;
587 }
588
589 static unsigned int nfp_vnic_get_tlv_stats_count(struct nfp_net *nn)
590 {
591 return nn->tlv_caps.vnic_stats_cnt + nn->max_r_vecs * 4;
592 }
593
594 static u8 *nfp_vnic_get_tlv_stats_strings(struct nfp_net *nn, u8 *data)
595 {
596 unsigned int i, id;
597 u8 __iomem *mem;
598 u64 id_word = 0;
599
600 mem = nn->dp.ctrl_bar + nn->tlv_caps.vnic_stats_off;
601 for (i = 0; i < nn->tlv_caps.vnic_stats_cnt; i++) {
602 if (!(i % 4))
603 id_word = readq(mem + i * 2);
604
605 id = (u16)id_word;
606 id_word >>= 16;
607
608 if (id < ARRAY_SIZE(nfp_tlv_stat_names) &&
609 nfp_tlv_stat_names[id][0]) {
610 memcpy(data, nfp_tlv_stat_names[id], ETH_GSTRING_LEN);
611 data += ETH_GSTRING_LEN;
612 } else {
613 data = nfp_pr_et(data, "dev_unknown_stat%u", id);
614 }
615 }
616
617 for (i = 0; i < nn->max_r_vecs; i++) {
618 data = nfp_pr_et(data, "rxq_%u_pkts", i);
619 data = nfp_pr_et(data, "rxq_%u_bytes", i);
620 data = nfp_pr_et(data, "txq_%u_pkts", i);
621 data = nfp_pr_et(data, "txq_%u_bytes", i);
622 }
623
624 return data;
625 }
626
627 static u64 *nfp_vnic_get_tlv_stats(struct nfp_net *nn, u64 *data)
628 {
629 u8 __iomem *mem;
630 unsigned int i;
631
632 mem = nn->dp.ctrl_bar + nn->tlv_caps.vnic_stats_off;
633 mem += roundup(2 * nn->tlv_caps.vnic_stats_cnt, 8);
634 for (i = 0; i < nn->tlv_caps.vnic_stats_cnt; i++)
635 *data++ = readq(mem + i * 8);
636
637 mem = nn->dp.ctrl_bar;
638 for (i = 0; i < nn->max_r_vecs; i++) {
639 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i));
640 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8);
641 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i));
642 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8);
643 }
644
645 return data;
646 }
647
648 static unsigned int nfp_mac_get_stats_count(struct net_device *netdev)
649 {
650 struct nfp_port *port;
651
652 port = nfp_port_from_netdev(netdev);
653 if (!__nfp_port_get_eth_port(port) || !port->eth_stats)
654 return 0;
655
656 return ARRAY_SIZE(nfp_mac_et_stats);
657 }
658
659 static u8 *nfp_mac_get_stats_strings(struct net_device *netdev, u8 *data)
660 {
661 struct nfp_port *port;
662 unsigned int i;
663
664 port = nfp_port_from_netdev(netdev);
665 if (!__nfp_port_get_eth_port(port) || !port->eth_stats)
666 return data;
667
668 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++)
669 data = nfp_pr_et(data, "mac.%s", nfp_mac_et_stats[i].name);
670
671 return data;
672 }
673
674 static u64 *nfp_mac_get_stats(struct net_device *netdev, u64 *data)
675 {
676 struct nfp_port *port;
677 unsigned int i;
678
679 port = nfp_port_from_netdev(netdev);
680 if (!__nfp_port_get_eth_port(port) || !port->eth_stats)
681 return data;
682
683 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++)
684 *data++ = readq(port->eth_stats + nfp_mac_et_stats[i].off);
685
686 return data;
687 }
688
689 static void nfp_net_get_strings(struct net_device *netdev,
690 u32 stringset, u8 *data)
691 {
692 struct nfp_net *nn = netdev_priv(netdev);
693
694 switch (stringset) {
695 case ETH_SS_STATS:
696 data = nfp_vnic_get_sw_stats_strings(netdev, data);
697 if (!nn->tlv_caps.vnic_stats_off)
698 data = nfp_vnic_get_hw_stats_strings(data,
699 nn->max_r_vecs,
700 false);
701 else
702 data = nfp_vnic_get_tlv_stats_strings(nn, data);
703 data = nfp_mac_get_stats_strings(netdev, data);
704 data = nfp_app_port_get_stats_strings(nn->port, data);
705 break;
706 }
707 }
708
709 static void
710 nfp_net_get_stats(struct net_device *netdev, struct ethtool_stats *stats,
711 u64 *data)
712 {
713 struct nfp_net *nn = netdev_priv(netdev);
714
715 data = nfp_vnic_get_sw_stats(netdev, data);
716 if (!nn->tlv_caps.vnic_stats_off)
717 data = nfp_vnic_get_hw_stats(data, nn->dp.ctrl_bar,
718 nn->max_r_vecs);
719 else
720 data = nfp_vnic_get_tlv_stats(nn, data);
721 data = nfp_mac_get_stats(netdev, data);
722 data = nfp_app_port_get_stats(nn->port, data);
723 }
724
725 static int nfp_net_get_sset_count(struct net_device *netdev, int sset)
726 {
727 struct nfp_net *nn = netdev_priv(netdev);
728 unsigned int cnt;
729
730 switch (sset) {
731 case ETH_SS_STATS:
732 cnt = nfp_vnic_get_sw_stats_count(netdev);
733 if (!nn->tlv_caps.vnic_stats_off)
734 cnt += nfp_vnic_get_hw_stats_count(nn->max_r_vecs);
735 else
736 cnt += nfp_vnic_get_tlv_stats_count(nn);
737 cnt += nfp_mac_get_stats_count(netdev);
738 cnt += nfp_app_port_get_stats_count(nn->port);
739 return cnt;
740 default:
741 return -EOPNOTSUPP;
742 }
743 }
744
745 static void nfp_port_get_strings(struct net_device *netdev,
746 u32 stringset, u8 *data)
747 {
748 struct nfp_port *port = nfp_port_from_netdev(netdev);
749
750 switch (stringset) {
751 case ETH_SS_STATS:
752 if (nfp_port_is_vnic(port))
753 data = nfp_vnic_get_hw_stats_strings(data, 0, true);
754 else
755 data = nfp_mac_get_stats_strings(netdev, data);
756 data = nfp_app_port_get_stats_strings(port, data);
757 break;
758 }
759 }
760
761 static void
762 nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats,
763 u64 *data)
764 {
765 struct nfp_port *port = nfp_port_from_netdev(netdev);
766
767 if (nfp_port_is_vnic(port))
768 data = nfp_vnic_get_hw_stats(data, port->vnic, 0);
769 else
770 data = nfp_mac_get_stats(netdev, data);
771 data = nfp_app_port_get_stats(port, data);
772 }
773
774 static int nfp_port_get_sset_count(struct net_device *netdev, int sset)
775 {
776 struct nfp_port *port = nfp_port_from_netdev(netdev);
777 unsigned int count;
778
779 switch (sset) {
780 case ETH_SS_STATS:
781 if (nfp_port_is_vnic(port))
782 count = nfp_vnic_get_hw_stats_count(0);
783 else
784 count = nfp_mac_get_stats_count(netdev);
785 count += nfp_app_port_get_stats_count(port);
786 return count;
787 default:
788 return -EOPNOTSUPP;
789 }
790 }
791
792 static int nfp_port_fec_ethtool_to_nsp(u32 fec)
793 {
794 switch (fec) {
795 case ETHTOOL_FEC_AUTO:
796 return NFP_FEC_AUTO_BIT;
797 case ETHTOOL_FEC_OFF:
798 return NFP_FEC_DISABLED_BIT;
799 case ETHTOOL_FEC_RS:
800 return NFP_FEC_REED_SOLOMON_BIT;
801 case ETHTOOL_FEC_BASER:
802 return NFP_FEC_BASER_BIT;
803 default:
804 /* NSP only supports a single mode at a time */
805 return -EOPNOTSUPP;
806 }
807 }
808
809 static u32 nfp_port_fec_nsp_to_ethtool(u32 fec)
810 {
811 u32 result = 0;
812
813 if (fec & NFP_FEC_AUTO)
814 result |= ETHTOOL_FEC_AUTO;
815 if (fec & NFP_FEC_BASER)
816 result |= ETHTOOL_FEC_BASER;
817 if (fec & NFP_FEC_REED_SOLOMON)
818 result |= ETHTOOL_FEC_RS;
819 if (fec & NFP_FEC_DISABLED)
820 result |= ETHTOOL_FEC_OFF;
821
822 return result ?: ETHTOOL_FEC_NONE;
823 }
824
825 static int
826 nfp_port_get_fecparam(struct net_device *netdev,
827 struct ethtool_fecparam *param)
828 {
829 struct nfp_eth_table_port *eth_port;
830 struct nfp_port *port;
831
832 param->active_fec = ETHTOOL_FEC_NONE;
833 param->fec = ETHTOOL_FEC_NONE;
834
835 port = nfp_port_from_netdev(netdev);
836 eth_port = nfp_port_get_eth_port(port);
837 if (!eth_port)
838 return -EOPNOTSUPP;
839
840 if (!nfp_eth_can_support_fec(eth_port))
841 return 0;
842
843 param->fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec_modes_supported);
844 param->active_fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec);
845
846 return 0;
847 }
848
849 static int
850 nfp_port_set_fecparam(struct net_device *netdev,
851 struct ethtool_fecparam *param)
852 {
853 struct nfp_eth_table_port *eth_port;
854 struct nfp_port *port;
855 int err, fec;
856
857 port = nfp_port_from_netdev(netdev);
858 eth_port = nfp_port_get_eth_port(port);
859 if (!eth_port)
860 return -EOPNOTSUPP;
861
862 if (!nfp_eth_can_support_fec(eth_port))
863 return -EOPNOTSUPP;
864
865 fec = nfp_port_fec_ethtool_to_nsp(param->fec);
866 if (fec < 0)
867 return fec;
868
869 err = nfp_eth_set_fec(port->app->cpp, eth_port->index, fec);
870 if (!err)
871 /* Only refresh if we did something */
872 nfp_net_refresh_port_table(port);
873
874 return err < 0 ? err : 0;
875 }
876
877 /* RX network flow classification (RSS, filters, etc)
878 */
879 static u32 ethtool_flow_to_nfp_flag(u32 flow_type)
880 {
881 static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = {
882 [TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP,
883 [TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP,
884 [UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP,
885 [UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP,
886 [IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4,
887 [IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6,
888 };
889
890 if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp))
891 return 0;
892
893 return xlate_ethtool_to_nfp[flow_type];
894 }
895
896 static int nfp_net_get_rss_hash_opts(struct nfp_net *nn,
897 struct ethtool_rxnfc *cmd)
898 {
899 u32 nfp_rss_flag;
900
901 cmd->data = 0;
902
903 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
904 return -EOPNOTSUPP;
905
906 nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type);
907 if (!nfp_rss_flag)
908 return -EINVAL;
909
910 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
911 if (nn->rss_cfg & nfp_rss_flag)
912 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
913
914 return 0;
915 }
916
917 static int nfp_net_get_rxnfc(struct net_device *netdev,
918 struct ethtool_rxnfc *cmd, u32 *rule_locs)
919 {
920 struct nfp_net *nn = netdev_priv(netdev);
921
922 switch (cmd->cmd) {
923 case ETHTOOL_GRXRINGS:
924 cmd->data = nn->dp.num_rx_rings;
925 return 0;
926 case ETHTOOL_GRXFH:
927 return nfp_net_get_rss_hash_opts(nn, cmd);
928 default:
929 return -EOPNOTSUPP;
930 }
931 }
932
933 static int nfp_net_set_rss_hash_opt(struct nfp_net *nn,
934 struct ethtool_rxnfc *nfc)
935 {
936 u32 new_rss_cfg = nn->rss_cfg;
937 u32 nfp_rss_flag;
938 int err;
939
940 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
941 return -EOPNOTSUPP;
942
943 /* RSS only supports IP SA/DA and L4 src/dst ports */
944 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
945 RXH_L4_B_0_1 | RXH_L4_B_2_3))
946 return -EINVAL;
947
948 /* We need at least the IP SA/DA fields for hashing */
949 if (!(nfc->data & RXH_IP_SRC) ||
950 !(nfc->data & RXH_IP_DST))
951 return -EINVAL;
952
953 nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type);
954 if (!nfp_rss_flag)
955 return -EINVAL;
956
957 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
958 case 0:
959 new_rss_cfg &= ~nfp_rss_flag;
960 break;
961 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
962 new_rss_cfg |= nfp_rss_flag;
963 break;
964 default:
965 return -EINVAL;
966 }
967
968 new_rss_cfg |= FIELD_PREP(NFP_NET_CFG_RSS_HFUNC, nn->rss_hfunc);
969 new_rss_cfg |= NFP_NET_CFG_RSS_MASK;
970
971 if (new_rss_cfg == nn->rss_cfg)
972 return 0;
973
974 writel(new_rss_cfg, nn->dp.ctrl_bar + NFP_NET_CFG_RSS_CTRL);
975 err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS);
976 if (err)
977 return err;
978
979 nn->rss_cfg = new_rss_cfg;
980
981 nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg);
982 return 0;
983 }
984
985 static int nfp_net_set_rxnfc(struct net_device *netdev,
986 struct ethtool_rxnfc *cmd)
987 {
988 struct nfp_net *nn = netdev_priv(netdev);
989
990 switch (cmd->cmd) {
991 case ETHTOOL_SRXFH:
992 return nfp_net_set_rss_hash_opt(nn, cmd);
993 default:
994 return -EOPNOTSUPP;
995 }
996 }
997
998 static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev)
999 {
1000 struct nfp_net *nn = netdev_priv(netdev);
1001
1002 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
1003 return 0;
1004
1005 return ARRAY_SIZE(nn->rss_itbl);
1006 }
1007
1008 static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev)
1009 {
1010 struct nfp_net *nn = netdev_priv(netdev);
1011
1012 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
1013 return -EOPNOTSUPP;
1014
1015 return nfp_net_rss_key_sz(nn);
1016 }
1017
1018 static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
1019 u8 *hfunc)
1020 {
1021 struct nfp_net *nn = netdev_priv(netdev);
1022 int i;
1023
1024 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
1025 return -EOPNOTSUPP;
1026
1027 if (indir)
1028 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++)
1029 indir[i] = nn->rss_itbl[i];
1030 if (key)
1031 memcpy(key, nn->rss_key, nfp_net_rss_key_sz(nn));
1032 if (hfunc) {
1033 *hfunc = nn->rss_hfunc;
1034 if (*hfunc >= 1 << ETH_RSS_HASH_FUNCS_COUNT)
1035 *hfunc = ETH_RSS_HASH_UNKNOWN;
1036 }
1037
1038 return 0;
1039 }
1040
1041 static int nfp_net_set_rxfh(struct net_device *netdev,
1042 const u32 *indir, const u8 *key,
1043 const u8 hfunc)
1044 {
1045 struct nfp_net *nn = netdev_priv(netdev);
1046 int i;
1047
1048 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY) ||
1049 !(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == nn->rss_hfunc))
1050 return -EOPNOTSUPP;
1051
1052 if (!key && !indir)
1053 return 0;
1054
1055 if (key) {
1056 memcpy(nn->rss_key, key, nfp_net_rss_key_sz(nn));
1057 nfp_net_rss_write_key(nn);
1058 }
1059 if (indir) {
1060 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++)
1061 nn->rss_itbl[i] = indir[i];
1062
1063 nfp_net_rss_write_itbl(nn);
1064 }
1065
1066 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS);
1067 }
1068
1069 /* Dump BAR registers
1070 */
1071 static int nfp_net_get_regs_len(struct net_device *netdev)
1072 {
1073 return NFP_NET_CFG_BAR_SZ;
1074 }
1075
1076 static void nfp_net_get_regs(struct net_device *netdev,
1077 struct ethtool_regs *regs, void *p)
1078 {
1079 struct nfp_net *nn = netdev_priv(netdev);
1080 u32 *regs_buf = p;
1081 int i;
1082
1083 regs->version = nn_readl(nn, NFP_NET_CFG_VERSION);
1084
1085 for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++)
1086 regs_buf[i] = readl(nn->dp.ctrl_bar + (i * sizeof(u32)));
1087 }
1088
1089 static int nfp_net_get_coalesce(struct net_device *netdev,
1090 struct ethtool_coalesce *ec)
1091 {
1092 struct nfp_net *nn = netdev_priv(netdev);
1093
1094 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD))
1095 return -EINVAL;
1096
1097 ec->rx_coalesce_usecs = nn->rx_coalesce_usecs;
1098 ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames;
1099 ec->tx_coalesce_usecs = nn->tx_coalesce_usecs;
1100 ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames;
1101
1102 return 0;
1103 }
1104
1105 /* Other debug dumps
1106 */
1107 static int
1108 nfp_dump_nsp_diag(struct nfp_app *app, struct ethtool_dump *dump, void *buffer)
1109 {
1110 struct nfp_resource *res;
1111 int ret;
1112
1113 if (!app)
1114 return -EOPNOTSUPP;
1115
1116 dump->version = 1;
1117 dump->flag = NFP_DUMP_NSP_DIAG;
1118
1119 res = nfp_resource_acquire(app->cpp, NFP_RESOURCE_NSP_DIAG);
1120 if (IS_ERR(res))
1121 return PTR_ERR(res);
1122
1123 if (buffer) {
1124 if (dump->len != nfp_resource_size(res)) {
1125 ret = -EINVAL;
1126 goto exit_release;
1127 }
1128
1129 ret = nfp_cpp_read(app->cpp, nfp_resource_cpp_id(res),
1130 nfp_resource_address(res),
1131 buffer, dump->len);
1132 if (ret != dump->len)
1133 ret = ret < 0 ? ret : -EIO;
1134 else
1135 ret = 0;
1136 } else {
1137 dump->len = nfp_resource_size(res);
1138 ret = 0;
1139 }
1140 exit_release:
1141 nfp_resource_release(res);
1142
1143 return ret;
1144 }
1145
1146 /* Set the dump flag/level. Calculate the dump length for flag > 0 only (new TLV
1147 * based dumps), since flag 0 (default) calculates the length in
1148 * nfp_app_get_dump_flag(), and we need to support triggering a level 0 dump
1149 * without setting the flag first, for backward compatibility.
1150 */
1151 static int nfp_app_set_dump(struct net_device *netdev, struct ethtool_dump *val)
1152 {
1153 struct nfp_app *app = nfp_app_from_netdev(netdev);
1154 s64 len;
1155
1156 if (!app)
1157 return -EOPNOTSUPP;
1158
1159 if (val->flag == NFP_DUMP_NSP_DIAG) {
1160 app->pf->dump_flag = val->flag;
1161 return 0;
1162 }
1163
1164 if (!app->pf->dumpspec)
1165 return -EOPNOTSUPP;
1166
1167 len = nfp_net_dump_calculate_size(app->pf, app->pf->dumpspec,
1168 val->flag);
1169 if (len < 0)
1170 return len;
1171
1172 app->pf->dump_flag = val->flag;
1173 app->pf->dump_len = len;
1174
1175 return 0;
1176 }
1177
1178 static int
1179 nfp_app_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump)
1180 {
1181 struct nfp_app *app = nfp_app_from_netdev(netdev);
1182
1183 if (!app)
1184 return -EOPNOTSUPP;
1185
1186 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG)
1187 return nfp_dump_nsp_diag(app, dump, NULL);
1188
1189 dump->flag = app->pf->dump_flag;
1190 dump->len = app->pf->dump_len;
1191
1192 return 0;
1193 }
1194
1195 static int
1196 nfp_app_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump,
1197 void *buffer)
1198 {
1199 struct nfp_app *app = nfp_app_from_netdev(netdev);
1200
1201 if (!app)
1202 return -EOPNOTSUPP;
1203
1204 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG)
1205 return nfp_dump_nsp_diag(app, dump, buffer);
1206
1207 dump->flag = app->pf->dump_flag;
1208 dump->len = app->pf->dump_len;
1209
1210 return nfp_net_dump_populate_buffer(app->pf, app->pf->dumpspec, dump,
1211 buffer);
1212 }
1213
1214 static int
1215 nfp_port_get_module_info(struct net_device *netdev,
1216 struct ethtool_modinfo *modinfo)
1217 {
1218 struct nfp_eth_table_port *eth_port;
1219 struct nfp_port *port;
1220 unsigned int read_len;
1221 struct nfp_nsp *nsp;
1222 int err = 0;
1223 u8 data;
1224
1225 port = nfp_port_from_netdev(netdev);
1226 eth_port = nfp_port_get_eth_port(port);
1227 if (!eth_port)
1228 return -EOPNOTSUPP;
1229
1230 nsp = nfp_nsp_open(port->app->cpp);
1231 if (IS_ERR(nsp)) {
1232 err = PTR_ERR(nsp);
1233 netdev_err(netdev, "Failed to access the NSP: %d\n", err);
1234 return err;
1235 }
1236
1237 if (!nfp_nsp_has_read_module_eeprom(nsp)) {
1238 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n");
1239 err = -EOPNOTSUPP;
1240 goto exit_close_nsp;
1241 }
1242
1243 switch (eth_port->interface) {
1244 case NFP_INTERFACE_SFP:
1245 case NFP_INTERFACE_SFP28:
1246 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index,
1247 SFP_SFF8472_COMPLIANCE, &data,
1248 1, &read_len);
1249 if (err < 0)
1250 goto exit_close_nsp;
1251
1252 if (!data) {
1253 modinfo->type = ETH_MODULE_SFF_8079;
1254 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
1255 } else {
1256 modinfo->type = ETH_MODULE_SFF_8472;
1257 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
1258 }
1259 break;
1260 case NFP_INTERFACE_QSFP:
1261 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index,
1262 SFP_SFF_REV_COMPLIANCE, &data,
1263 1, &read_len);
1264 if (err < 0)
1265 goto exit_close_nsp;
1266
1267 if (data < 0x3) {
1268 modinfo->type = ETH_MODULE_SFF_8436;
1269 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
1270 } else {
1271 modinfo->type = ETH_MODULE_SFF_8636;
1272 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
1273 }
1274 break;
1275 case NFP_INTERFACE_QSFP28:
1276 modinfo->type = ETH_MODULE_SFF_8636;
1277 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
1278 break;
1279 default:
1280 netdev_err(netdev, "Unsupported module 0x%x detected\n",
1281 eth_port->interface);
1282 err = -EINVAL;
1283 }
1284
1285 exit_close_nsp:
1286 nfp_nsp_close(nsp);
1287 return err;
1288 }
1289
1290 static int
1291 nfp_port_get_module_eeprom(struct net_device *netdev,
1292 struct ethtool_eeprom *eeprom, u8 *data)
1293 {
1294 struct nfp_eth_table_port *eth_port;
1295 struct nfp_port *port;
1296 struct nfp_nsp *nsp;
1297 int err;
1298
1299 port = nfp_port_from_netdev(netdev);
1300 eth_port = __nfp_port_get_eth_port(port);
1301 if (!eth_port)
1302 return -EOPNOTSUPP;
1303
1304 nsp = nfp_nsp_open(port->app->cpp);
1305 if (IS_ERR(nsp)) {
1306 err = PTR_ERR(nsp);
1307 netdev_err(netdev, "Failed to access the NSP: %d\n", err);
1308 return err;
1309 }
1310
1311 if (!nfp_nsp_has_read_module_eeprom(nsp)) {
1312 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n");
1313 err = -EOPNOTSUPP;
1314 goto exit_close_nsp;
1315 }
1316
1317 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index,
1318 eeprom->offset, data, eeprom->len,
1319 &eeprom->len);
1320 if (err < 0) {
1321 if (eeprom->len) {
1322 netdev_warn(netdev,
1323 "Incomplete read from module EEPROM: %d\n",
1324 err);
1325 err = 0;
1326 } else {
1327 netdev_err(netdev,
1328 "Reading from module EEPROM failed: %d\n",
1329 err);
1330 }
1331 }
1332
1333 exit_close_nsp:
1334 nfp_nsp_close(nsp);
1335 return err;
1336 }
1337
1338 static int nfp_net_set_coalesce(struct net_device *netdev,
1339 struct ethtool_coalesce *ec)
1340 {
1341 struct nfp_net *nn = netdev_priv(netdev);
1342 unsigned int factor;
1343
1344 /* Compute factor used to convert coalesce '_usecs' parameters to
1345 * ME timestamp ticks. There are 16 ME clock cycles for each timestamp
1346 * count.
1347 */
1348 factor = nn->me_freq_mhz / 16;
1349
1350 /* Each pair of (usecs, max_frames) fields specifies that interrupts
1351 * should be coalesced until
1352 * (usecs > 0 && time_since_first_completion >= usecs) ||
1353 * (max_frames > 0 && completed_frames >= max_frames)
1354 *
1355 * It is illegal to set both usecs and max_frames to zero as this would
1356 * cause interrupts to never be generated. To disable coalescing, set
1357 * usecs = 0 and max_frames = 1.
1358 *
1359 * Some implementations ignore the value of max_frames and use the
1360 * condition time_since_first_completion >= usecs
1361 */
1362
1363 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD))
1364 return -EINVAL;
1365
1366 /* ensure valid configuration */
1367 if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames)
1368 return -EINVAL;
1369
1370 if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames)
1371 return -EINVAL;
1372
1373 if (ec->rx_coalesce_usecs * factor >= ((1 << 16) - 1))
1374 return -EINVAL;
1375
1376 if (ec->tx_coalesce_usecs * factor >= ((1 << 16) - 1))
1377 return -EINVAL;
1378
1379 if (ec->rx_max_coalesced_frames >= ((1 << 16) - 1))
1380 return -EINVAL;
1381
1382 if (ec->tx_max_coalesced_frames >= ((1 << 16) - 1))
1383 return -EINVAL;
1384
1385 /* configuration is valid */
1386 nn->rx_coalesce_usecs = ec->rx_coalesce_usecs;
1387 nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames;
1388 nn->tx_coalesce_usecs = ec->tx_coalesce_usecs;
1389 nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames;
1390
1391 /* write configuration to device */
1392 nfp_net_coalesce_write_cfg(nn);
1393 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD);
1394 }
1395
1396 static void nfp_net_get_channels(struct net_device *netdev,
1397 struct ethtool_channels *channel)
1398 {
1399 struct nfp_net *nn = netdev_priv(netdev);
1400 unsigned int num_tx_rings;
1401
1402 num_tx_rings = nn->dp.num_tx_rings;
1403 if (nn->dp.xdp_prog)
1404 num_tx_rings -= nn->dp.num_rx_rings;
1405
1406 channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs);
1407 channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs);
1408 channel->max_combined = min(channel->max_rx, channel->max_tx);
1409 channel->max_other = NFP_NET_NON_Q_VECTORS;
1410 channel->combined_count = min(nn->dp.num_rx_rings, num_tx_rings);
1411 channel->rx_count = nn->dp.num_rx_rings - channel->combined_count;
1412 channel->tx_count = num_tx_rings - channel->combined_count;
1413 channel->other_count = NFP_NET_NON_Q_VECTORS;
1414 }
1415
1416 static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx,
1417 unsigned int total_tx)
1418 {
1419 struct nfp_net_dp *dp;
1420
1421 dp = nfp_net_clone_dp(nn);
1422 if (!dp)
1423 return -ENOMEM;
1424
1425 dp->num_rx_rings = total_rx;
1426 dp->num_tx_rings = total_tx;
1427 /* nfp_net_check_config() will catch num_tx_rings > nn->max_tx_rings */
1428 if (dp->xdp_prog)
1429 dp->num_tx_rings += total_rx;
1430
1431 return nfp_net_ring_reconfig(nn, dp, NULL);
1432 }
1433
1434 static int nfp_net_set_channels(struct net_device *netdev,
1435 struct ethtool_channels *channel)
1436 {
1437 struct nfp_net *nn = netdev_priv(netdev);
1438 unsigned int total_rx, total_tx;
1439
1440 /* Reject unsupported */
1441 if (channel->other_count != NFP_NET_NON_Q_VECTORS ||
1442 (channel->rx_count && channel->tx_count))
1443 return -EINVAL;
1444
1445 total_rx = channel->combined_count + channel->rx_count;
1446 total_tx = channel->combined_count + channel->tx_count;
1447
1448 if (total_rx > min(nn->max_rx_rings, nn->max_r_vecs) ||
1449 total_tx > min(nn->max_tx_rings, nn->max_r_vecs))
1450 return -EINVAL;
1451
1452 return nfp_net_set_num_rings(nn, total_rx, total_tx);
1453 }
1454
1455 static const struct ethtool_ops nfp_net_ethtool_ops = {
1456 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1457 ETHTOOL_COALESCE_MAX_FRAMES,
1458 .get_drvinfo = nfp_net_get_drvinfo,
1459 .get_link = ethtool_op_get_link,
1460 .get_ringparam = nfp_net_get_ringparam,
1461 .set_ringparam = nfp_net_set_ringparam,
1462 .get_strings = nfp_net_get_strings,
1463 .get_ethtool_stats = nfp_net_get_stats,
1464 .get_sset_count = nfp_net_get_sset_count,
1465 .get_rxnfc = nfp_net_get_rxnfc,
1466 .set_rxnfc = nfp_net_set_rxnfc,
1467 .get_rxfh_indir_size = nfp_net_get_rxfh_indir_size,
1468 .get_rxfh_key_size = nfp_net_get_rxfh_key_size,
1469 .get_rxfh = nfp_net_get_rxfh,
1470 .set_rxfh = nfp_net_set_rxfh,
1471 .get_regs_len = nfp_net_get_regs_len,
1472 .get_regs = nfp_net_get_regs,
1473 .set_dump = nfp_app_set_dump,
1474 .get_dump_flag = nfp_app_get_dump_flag,
1475 .get_dump_data = nfp_app_get_dump_data,
1476 .get_module_info = nfp_port_get_module_info,
1477 .get_module_eeprom = nfp_port_get_module_eeprom,
1478 .get_coalesce = nfp_net_get_coalesce,
1479 .set_coalesce = nfp_net_set_coalesce,
1480 .get_channels = nfp_net_get_channels,
1481 .set_channels = nfp_net_set_channels,
1482 .get_link_ksettings = nfp_net_get_link_ksettings,
1483 .set_link_ksettings = nfp_net_set_link_ksettings,
1484 .get_fecparam = nfp_port_get_fecparam,
1485 .set_fecparam = nfp_port_set_fecparam,
1486 };
1487
1488 const struct ethtool_ops nfp_port_ethtool_ops = {
1489 .get_drvinfo = nfp_app_get_drvinfo,
1490 .get_link = ethtool_op_get_link,
1491 .get_strings = nfp_port_get_strings,
1492 .get_ethtool_stats = nfp_port_get_stats,
1493 .get_sset_count = nfp_port_get_sset_count,
1494 .set_dump = nfp_app_set_dump,
1495 .get_dump_flag = nfp_app_get_dump_flag,
1496 .get_dump_data = nfp_app_get_dump_data,
1497 .get_module_info = nfp_port_get_module_info,
1498 .get_module_eeprom = nfp_port_get_module_eeprom,
1499 .get_link_ksettings = nfp_net_get_link_ksettings,
1500 .set_link_ksettings = nfp_net_set_link_ksettings,
1501 .get_fecparam = nfp_port_get_fecparam,
1502 .set_fecparam = nfp_port_set_fecparam,
1503 };
1504
1505 void nfp_net_set_ethtool_ops(struct net_device *netdev)
1506 {
1507 netdev->ethtool_ops = &nfp_net_ethtool_ops;
1508 }
Linux with added FPC-III support