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_BIT;
833 	param->fec = ETHTOOL_FEC_NONE_BIT;
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 }
1509