xref: /linux/net/ethtool/common.c (revision d1e879ec600f9b3bdd253167533959facfefb17b)
1 // SPDX-License-Identifier: GPL-2.0-only
2 
3 #include <linux/ethtool_netlink.h>
4 #include <linux/net_tstamp.h>
5 #include <linux/phy.h>
6 #include <linux/rtnetlink.h>
7 #include <linux/ptp_clock_kernel.h>
8 #include <linux/phy_link_topology.h>
9 #include <net/netdev_queues.h>
10 
11 #include "netlink.h"
12 #include "common.h"
13 #include "../core/dev.h"
14 
15 
16 const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
17 	[NETIF_F_SG_BIT] =               "tx-scatter-gather",
18 	[NETIF_F_IP_CSUM_BIT] =          "tx-checksum-ipv4",
19 	[NETIF_F_HW_CSUM_BIT] =          "tx-checksum-ip-generic",
20 	[NETIF_F_IPV6_CSUM_BIT] =        "tx-checksum-ipv6",
21 	[NETIF_F_HIGHDMA_BIT] =          "highdma",
22 	[NETIF_F_FRAGLIST_BIT] =         "tx-scatter-gather-fraglist",
23 	[NETIF_F_HW_VLAN_CTAG_TX_BIT] =  "tx-vlan-hw-insert",
24 
25 	[NETIF_F_HW_VLAN_CTAG_RX_BIT] =  "rx-vlan-hw-parse",
26 	[NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
27 	[NETIF_F_HW_VLAN_STAG_TX_BIT] =  "tx-vlan-stag-hw-insert",
28 	[NETIF_F_HW_VLAN_STAG_RX_BIT] =  "rx-vlan-stag-hw-parse",
29 	[NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter",
30 	[NETIF_F_VLAN_CHALLENGED_BIT] =  "vlan-challenged",
31 	[NETIF_F_GSO_BIT] =              "tx-generic-segmentation",
32 	[NETIF_F_GRO_BIT] =              "rx-gro",
33 	[NETIF_F_GRO_HW_BIT] =           "rx-gro-hw",
34 	[NETIF_F_LRO_BIT] =              "rx-lro",
35 
36 	[NETIF_F_TSO_BIT] =              "tx-tcp-segmentation",
37 	[NETIF_F_GSO_ROBUST_BIT] =       "tx-gso-robust",
38 	[NETIF_F_TSO_ECN_BIT] =          "tx-tcp-ecn-segmentation",
39 	[NETIF_F_TSO_MANGLEID_BIT] =	 "tx-tcp-mangleid-segmentation",
40 	[NETIF_F_TSO6_BIT] =             "tx-tcp6-segmentation",
41 	[NETIF_F_FSO_BIT] =              "tx-fcoe-segmentation",
42 	[NETIF_F_GSO_GRE_BIT] =		 "tx-gre-segmentation",
43 	[NETIF_F_GSO_GRE_CSUM_BIT] =	 "tx-gre-csum-segmentation",
44 	[NETIF_F_GSO_IPXIP4_BIT] =	 "tx-ipxip4-segmentation",
45 	[NETIF_F_GSO_IPXIP6_BIT] =	 "tx-ipxip6-segmentation",
46 	[NETIF_F_GSO_UDP_TUNNEL_BIT] =	 "tx-udp_tnl-segmentation",
47 	[NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
48 	[NETIF_F_GSO_PARTIAL_BIT] =	 "tx-gso-partial",
49 	[NETIF_F_GSO_TUNNEL_REMCSUM_BIT] = "tx-tunnel-remcsum-segmentation",
50 	[NETIF_F_GSO_SCTP_BIT] =	 "tx-sctp-segmentation",
51 	[NETIF_F_GSO_ESP_BIT] =		 "tx-esp-segmentation",
52 	[NETIF_F_GSO_UDP_L4_BIT] =	 "tx-udp-segmentation",
53 	[NETIF_F_GSO_FRAGLIST_BIT] =	 "tx-gso-list",
54 
55 	[NETIF_F_FCOE_CRC_BIT] =         "tx-checksum-fcoe-crc",
56 	[NETIF_F_SCTP_CRC_BIT] =        "tx-checksum-sctp",
57 	[NETIF_F_NTUPLE_BIT] =           "rx-ntuple-filter",
58 	[NETIF_F_RXHASH_BIT] =           "rx-hashing",
59 	[NETIF_F_RXCSUM_BIT] =           "rx-checksum",
60 	[NETIF_F_NOCACHE_COPY_BIT] =     "tx-nocache-copy",
61 	[NETIF_F_LOOPBACK_BIT] =         "loopback",
62 	[NETIF_F_RXFCS_BIT] =            "rx-fcs",
63 	[NETIF_F_RXALL_BIT] =            "rx-all",
64 	[NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
65 	[NETIF_F_HW_TC_BIT] =		 "hw-tc-offload",
66 	[NETIF_F_HW_ESP_BIT] =		 "esp-hw-offload",
67 	[NETIF_F_HW_ESP_TX_CSUM_BIT] =	 "esp-tx-csum-hw-offload",
68 	[NETIF_F_RX_UDP_TUNNEL_PORT_BIT] =	 "rx-udp_tunnel-port-offload",
69 	[NETIF_F_HW_TLS_RECORD_BIT] =	"tls-hw-record",
70 	[NETIF_F_HW_TLS_TX_BIT] =	 "tls-hw-tx-offload",
71 	[NETIF_F_HW_TLS_RX_BIT] =	 "tls-hw-rx-offload",
72 	[NETIF_F_GRO_FRAGLIST_BIT] =	 "rx-gro-list",
73 	[NETIF_F_HW_MACSEC_BIT] =	 "macsec-hw-offload",
74 	[NETIF_F_GRO_UDP_FWD_BIT] =	 "rx-udp-gro-forwarding",
75 	[NETIF_F_HW_HSR_TAG_INS_BIT] =	 "hsr-tag-ins-offload",
76 	[NETIF_F_HW_HSR_TAG_RM_BIT] =	 "hsr-tag-rm-offload",
77 	[NETIF_F_HW_HSR_FWD_BIT] =	 "hsr-fwd-offload",
78 	[NETIF_F_HW_HSR_DUP_BIT] =	 "hsr-dup-offload",
79 };
80 
81 const char
82 rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
83 	[ETH_RSS_HASH_TOP_BIT] =	"toeplitz",
84 	[ETH_RSS_HASH_XOR_BIT] =	"xor",
85 	[ETH_RSS_HASH_CRC32_BIT] =	"crc32",
86 };
87 
88 const char
89 tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
90 	[ETHTOOL_ID_UNSPEC]     = "Unspec",
91 	[ETHTOOL_RX_COPYBREAK]	= "rx-copybreak",
92 	[ETHTOOL_TX_COPYBREAK]	= "tx-copybreak",
93 	[ETHTOOL_PFC_PREVENTION_TOUT] = "pfc-prevention-tout",
94 	[ETHTOOL_TX_COPYBREAK_BUF_SIZE] = "tx-copybreak-buf-size",
95 };
96 
97 const char
98 phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
99 	[ETHTOOL_ID_UNSPEC]     = "Unspec",
100 	[ETHTOOL_PHY_DOWNSHIFT]	= "phy-downshift",
101 	[ETHTOOL_PHY_FAST_LINK_DOWN] = "phy-fast-link-down",
102 	[ETHTOOL_PHY_EDPD]	= "phy-energy-detect-power-down",
103 };
104 
105 #define __LINK_MODE_NAME(speed, type, duplex) \
106 	#speed "base" #type "/" #duplex
107 #define __DEFINE_LINK_MODE_NAME(speed, type, duplex) \
108 	[ETHTOOL_LINK_MODE(speed, type, duplex)] = \
109 	__LINK_MODE_NAME(speed, type, duplex)
110 #define __DEFINE_SPECIAL_MODE_NAME(_mode, _name) \
111 	[ETHTOOL_LINK_MODE_ ## _mode ## _BIT] = _name
112 
113 const char link_mode_names[][ETH_GSTRING_LEN] = {
114 	__DEFINE_LINK_MODE_NAME(10, T, Half),
115 	__DEFINE_LINK_MODE_NAME(10, T, Full),
116 	__DEFINE_LINK_MODE_NAME(100, T, Half),
117 	__DEFINE_LINK_MODE_NAME(100, T, Full),
118 	__DEFINE_LINK_MODE_NAME(1000, T, Half),
119 	__DEFINE_LINK_MODE_NAME(1000, T, Full),
120 	__DEFINE_SPECIAL_MODE_NAME(Autoneg, "Autoneg"),
121 	__DEFINE_SPECIAL_MODE_NAME(TP, "TP"),
122 	__DEFINE_SPECIAL_MODE_NAME(AUI, "AUI"),
123 	__DEFINE_SPECIAL_MODE_NAME(MII, "MII"),
124 	__DEFINE_SPECIAL_MODE_NAME(FIBRE, "FIBRE"),
125 	__DEFINE_SPECIAL_MODE_NAME(BNC, "BNC"),
126 	__DEFINE_LINK_MODE_NAME(10000, T, Full),
127 	__DEFINE_SPECIAL_MODE_NAME(Pause, "Pause"),
128 	__DEFINE_SPECIAL_MODE_NAME(Asym_Pause, "Asym_Pause"),
129 	__DEFINE_LINK_MODE_NAME(2500, X, Full),
130 	__DEFINE_SPECIAL_MODE_NAME(Backplane, "Backplane"),
131 	__DEFINE_LINK_MODE_NAME(1000, KX, Full),
132 	__DEFINE_LINK_MODE_NAME(10000, KX4, Full),
133 	__DEFINE_LINK_MODE_NAME(10000, KR, Full),
134 	__DEFINE_SPECIAL_MODE_NAME(10000baseR_FEC, "10000baseR_FEC"),
135 	__DEFINE_LINK_MODE_NAME(20000, MLD2, Full),
136 	__DEFINE_LINK_MODE_NAME(20000, KR2, Full),
137 	__DEFINE_LINK_MODE_NAME(40000, KR4, Full),
138 	__DEFINE_LINK_MODE_NAME(40000, CR4, Full),
139 	__DEFINE_LINK_MODE_NAME(40000, SR4, Full),
140 	__DEFINE_LINK_MODE_NAME(40000, LR4, Full),
141 	__DEFINE_LINK_MODE_NAME(56000, KR4, Full),
142 	__DEFINE_LINK_MODE_NAME(56000, CR4, Full),
143 	__DEFINE_LINK_MODE_NAME(56000, SR4, Full),
144 	__DEFINE_LINK_MODE_NAME(56000, LR4, Full),
145 	__DEFINE_LINK_MODE_NAME(25000, CR, Full),
146 	__DEFINE_LINK_MODE_NAME(25000, KR, Full),
147 	__DEFINE_LINK_MODE_NAME(25000, SR, Full),
148 	__DEFINE_LINK_MODE_NAME(50000, CR2, Full),
149 	__DEFINE_LINK_MODE_NAME(50000, KR2, Full),
150 	__DEFINE_LINK_MODE_NAME(100000, KR4, Full),
151 	__DEFINE_LINK_MODE_NAME(100000, SR4, Full),
152 	__DEFINE_LINK_MODE_NAME(100000, CR4, Full),
153 	__DEFINE_LINK_MODE_NAME(100000, LR4_ER4, Full),
154 	__DEFINE_LINK_MODE_NAME(50000, SR2, Full),
155 	__DEFINE_LINK_MODE_NAME(1000, X, Full),
156 	__DEFINE_LINK_MODE_NAME(10000, CR, Full),
157 	__DEFINE_LINK_MODE_NAME(10000, SR, Full),
158 	__DEFINE_LINK_MODE_NAME(10000, LR, Full),
159 	__DEFINE_LINK_MODE_NAME(10000, LRM, Full),
160 	__DEFINE_LINK_MODE_NAME(10000, ER, Full),
161 	__DEFINE_LINK_MODE_NAME(2500, T, Full),
162 	__DEFINE_LINK_MODE_NAME(5000, T, Full),
163 	__DEFINE_SPECIAL_MODE_NAME(FEC_NONE, "None"),
164 	__DEFINE_SPECIAL_MODE_NAME(FEC_RS, "RS"),
165 	__DEFINE_SPECIAL_MODE_NAME(FEC_BASER, "BASER"),
166 	__DEFINE_LINK_MODE_NAME(50000, KR, Full),
167 	__DEFINE_LINK_MODE_NAME(50000, SR, Full),
168 	__DEFINE_LINK_MODE_NAME(50000, CR, Full),
169 	__DEFINE_LINK_MODE_NAME(50000, LR_ER_FR, Full),
170 	__DEFINE_LINK_MODE_NAME(50000, DR, Full),
171 	__DEFINE_LINK_MODE_NAME(100000, KR2, Full),
172 	__DEFINE_LINK_MODE_NAME(100000, SR2, Full),
173 	__DEFINE_LINK_MODE_NAME(100000, CR2, Full),
174 	__DEFINE_LINK_MODE_NAME(100000, LR2_ER2_FR2, Full),
175 	__DEFINE_LINK_MODE_NAME(100000, DR2, Full),
176 	__DEFINE_LINK_MODE_NAME(200000, KR4, Full),
177 	__DEFINE_LINK_MODE_NAME(200000, SR4, Full),
178 	__DEFINE_LINK_MODE_NAME(200000, LR4_ER4_FR4, Full),
179 	__DEFINE_LINK_MODE_NAME(200000, DR4, Full),
180 	__DEFINE_LINK_MODE_NAME(200000, CR4, Full),
181 	__DEFINE_LINK_MODE_NAME(100, T1, Full),
182 	__DEFINE_LINK_MODE_NAME(1000, T1, Full),
183 	__DEFINE_LINK_MODE_NAME(400000, KR8, Full),
184 	__DEFINE_LINK_MODE_NAME(400000, SR8, Full),
185 	__DEFINE_LINK_MODE_NAME(400000, LR8_ER8_FR8, Full),
186 	__DEFINE_LINK_MODE_NAME(400000, DR8, Full),
187 	__DEFINE_LINK_MODE_NAME(400000, CR8, Full),
188 	__DEFINE_SPECIAL_MODE_NAME(FEC_LLRS, "LLRS"),
189 	__DEFINE_LINK_MODE_NAME(100000, KR, Full),
190 	__DEFINE_LINK_MODE_NAME(100000, SR, Full),
191 	__DEFINE_LINK_MODE_NAME(100000, LR_ER_FR, Full),
192 	__DEFINE_LINK_MODE_NAME(100000, DR, Full),
193 	__DEFINE_LINK_MODE_NAME(100000, CR, Full),
194 	__DEFINE_LINK_MODE_NAME(200000, KR2, Full),
195 	__DEFINE_LINK_MODE_NAME(200000, SR2, Full),
196 	__DEFINE_LINK_MODE_NAME(200000, LR2_ER2_FR2, Full),
197 	__DEFINE_LINK_MODE_NAME(200000, DR2, Full),
198 	__DEFINE_LINK_MODE_NAME(200000, CR2, Full),
199 	__DEFINE_LINK_MODE_NAME(400000, KR4, Full),
200 	__DEFINE_LINK_MODE_NAME(400000, SR4, Full),
201 	__DEFINE_LINK_MODE_NAME(400000, LR4_ER4_FR4, Full),
202 	__DEFINE_LINK_MODE_NAME(400000, DR4, Full),
203 	__DEFINE_LINK_MODE_NAME(400000, CR4, Full),
204 	__DEFINE_LINK_MODE_NAME(100, FX, Half),
205 	__DEFINE_LINK_MODE_NAME(100, FX, Full),
206 	__DEFINE_LINK_MODE_NAME(10, T1L, Full),
207 	__DEFINE_LINK_MODE_NAME(800000, CR8, Full),
208 	__DEFINE_LINK_MODE_NAME(800000, KR8, Full),
209 	__DEFINE_LINK_MODE_NAME(800000, DR8, Full),
210 	__DEFINE_LINK_MODE_NAME(800000, DR8_2, Full),
211 	__DEFINE_LINK_MODE_NAME(800000, SR8, Full),
212 	__DEFINE_LINK_MODE_NAME(800000, VR8, Full),
213 	__DEFINE_LINK_MODE_NAME(10, T1S, Full),
214 	__DEFINE_LINK_MODE_NAME(10, T1S, Half),
215 	__DEFINE_LINK_MODE_NAME(10, T1S_P2MP, Half),
216 	__DEFINE_LINK_MODE_NAME(10, T1BRR, Full),
217 	__DEFINE_LINK_MODE_NAME(200000, CR, Full),
218 	__DEFINE_LINK_MODE_NAME(200000, KR, Full),
219 	__DEFINE_LINK_MODE_NAME(200000, DR, Full),
220 	__DEFINE_LINK_MODE_NAME(200000, DR_2, Full),
221 	__DEFINE_LINK_MODE_NAME(200000, SR, Full),
222 	__DEFINE_LINK_MODE_NAME(200000, VR, Full),
223 	__DEFINE_LINK_MODE_NAME(400000, CR2, Full),
224 	__DEFINE_LINK_MODE_NAME(400000, KR2, Full),
225 	__DEFINE_LINK_MODE_NAME(400000, DR2, Full),
226 	__DEFINE_LINK_MODE_NAME(400000, DR2_2, Full),
227 	__DEFINE_LINK_MODE_NAME(400000, SR2, Full),
228 	__DEFINE_LINK_MODE_NAME(400000, VR2, Full),
229 	__DEFINE_LINK_MODE_NAME(800000, CR4, Full),
230 	__DEFINE_LINK_MODE_NAME(800000, KR4, Full),
231 	__DEFINE_LINK_MODE_NAME(800000, DR4, Full),
232 	__DEFINE_LINK_MODE_NAME(800000, DR4_2, Full),
233 	__DEFINE_LINK_MODE_NAME(800000, SR4, Full),
234 	__DEFINE_LINK_MODE_NAME(800000, VR4, Full),
235 };
236 static_assert(ARRAY_SIZE(link_mode_names) == __ETHTOOL_LINK_MODE_MASK_NBITS);
237 
238 #define __LINK_MODE_LANES_CR		1
239 #define __LINK_MODE_LANES_CR2		2
240 #define __LINK_MODE_LANES_CR4		4
241 #define __LINK_MODE_LANES_CR8		8
242 #define __LINK_MODE_LANES_DR		1
243 #define __LINK_MODE_LANES_DR_2		1
244 #define __LINK_MODE_LANES_DR2		2
245 #define __LINK_MODE_LANES_DR2_2		2
246 #define __LINK_MODE_LANES_DR4		4
247 #define __LINK_MODE_LANES_DR4_2		4
248 #define __LINK_MODE_LANES_DR8		8
249 #define __LINK_MODE_LANES_KR		1
250 #define __LINK_MODE_LANES_KR2		2
251 #define __LINK_MODE_LANES_KR4		4
252 #define __LINK_MODE_LANES_KR8		8
253 #define __LINK_MODE_LANES_SR		1
254 #define __LINK_MODE_LANES_SR2		2
255 #define __LINK_MODE_LANES_SR4		4
256 #define __LINK_MODE_LANES_SR8		8
257 #define __LINK_MODE_LANES_ER		1
258 #define __LINK_MODE_LANES_KX		1
259 #define __LINK_MODE_LANES_KX4		4
260 #define __LINK_MODE_LANES_LR		1
261 #define __LINK_MODE_LANES_LR4		4
262 #define __LINK_MODE_LANES_LR4_ER4	4
263 #define __LINK_MODE_LANES_LR_ER_FR	1
264 #define __LINK_MODE_LANES_LR2_ER2_FR2	2
265 #define __LINK_MODE_LANES_LR4_ER4_FR4	4
266 #define __LINK_MODE_LANES_LR8_ER8_FR8	8
267 #define __LINK_MODE_LANES_LRM		1
268 #define __LINK_MODE_LANES_MLD2		2
269 #define __LINK_MODE_LANES_T		1
270 #define __LINK_MODE_LANES_T1		1
271 #define __LINK_MODE_LANES_X		1
272 #define __LINK_MODE_LANES_FX		1
273 #define __LINK_MODE_LANES_T1L		1
274 #define __LINK_MODE_LANES_T1S		1
275 #define __LINK_MODE_LANES_T1S_P2MP	1
276 #define __LINK_MODE_LANES_VR		1
277 #define __LINK_MODE_LANES_VR2		2
278 #define __LINK_MODE_LANES_VR4		4
279 #define __LINK_MODE_LANES_VR8		8
280 #define __LINK_MODE_LANES_DR8_2		8
281 #define __LINK_MODE_LANES_T1BRR		1
282 
283 #define __DEFINE_LINK_MODE_PARAMS(_speed, _type, _duplex)	\
284 	[ETHTOOL_LINK_MODE(_speed, _type, _duplex)] = {		\
285 		.speed  = SPEED_ ## _speed, \
286 		.lanes  = __LINK_MODE_LANES_ ## _type, \
287 		.duplex	= __DUPLEX_ ## _duplex \
288 	}
289 #define __DUPLEX_Half DUPLEX_HALF
290 #define __DUPLEX_Full DUPLEX_FULL
291 #define __DEFINE_SPECIAL_MODE_PARAMS(_mode) \
292 	[ETHTOOL_LINK_MODE_ ## _mode ## _BIT] = { \
293 		.speed	= SPEED_UNKNOWN, \
294 		.lanes	= 0, \
295 		.duplex	= DUPLEX_UNKNOWN, \
296 	}
297 
298 const struct link_mode_info link_mode_params[] = {
299 	__DEFINE_LINK_MODE_PARAMS(10, T, Half),
300 	__DEFINE_LINK_MODE_PARAMS(10, T, Full),
301 	__DEFINE_LINK_MODE_PARAMS(100, T, Half),
302 	__DEFINE_LINK_MODE_PARAMS(100, T, Full),
303 	__DEFINE_LINK_MODE_PARAMS(1000, T, Half),
304 	__DEFINE_LINK_MODE_PARAMS(1000, T, Full),
305 	__DEFINE_SPECIAL_MODE_PARAMS(Autoneg),
306 	__DEFINE_SPECIAL_MODE_PARAMS(TP),
307 	__DEFINE_SPECIAL_MODE_PARAMS(AUI),
308 	__DEFINE_SPECIAL_MODE_PARAMS(MII),
309 	__DEFINE_SPECIAL_MODE_PARAMS(FIBRE),
310 	__DEFINE_SPECIAL_MODE_PARAMS(BNC),
311 	__DEFINE_LINK_MODE_PARAMS(10000, T, Full),
312 	__DEFINE_SPECIAL_MODE_PARAMS(Pause),
313 	__DEFINE_SPECIAL_MODE_PARAMS(Asym_Pause),
314 	__DEFINE_LINK_MODE_PARAMS(2500, X, Full),
315 	__DEFINE_SPECIAL_MODE_PARAMS(Backplane),
316 	__DEFINE_LINK_MODE_PARAMS(1000, KX, Full),
317 	__DEFINE_LINK_MODE_PARAMS(10000, KX4, Full),
318 	__DEFINE_LINK_MODE_PARAMS(10000, KR, Full),
319 	[ETHTOOL_LINK_MODE_10000baseR_FEC_BIT] = {
320 		.speed	= SPEED_10000,
321 		.lanes	= 1,
322 		.duplex = DUPLEX_FULL,
323 	},
324 	__DEFINE_LINK_MODE_PARAMS(20000, MLD2, Full),
325 	__DEFINE_LINK_MODE_PARAMS(20000, KR2, Full),
326 	__DEFINE_LINK_MODE_PARAMS(40000, KR4, Full),
327 	__DEFINE_LINK_MODE_PARAMS(40000, CR4, Full),
328 	__DEFINE_LINK_MODE_PARAMS(40000, SR4, Full),
329 	__DEFINE_LINK_MODE_PARAMS(40000, LR4, Full),
330 	__DEFINE_LINK_MODE_PARAMS(56000, KR4, Full),
331 	__DEFINE_LINK_MODE_PARAMS(56000, CR4, Full),
332 	__DEFINE_LINK_MODE_PARAMS(56000, SR4, Full),
333 	__DEFINE_LINK_MODE_PARAMS(56000, LR4, Full),
334 	__DEFINE_LINK_MODE_PARAMS(25000, CR, Full),
335 	__DEFINE_LINK_MODE_PARAMS(25000, KR, Full),
336 	__DEFINE_LINK_MODE_PARAMS(25000, SR, Full),
337 	__DEFINE_LINK_MODE_PARAMS(50000, CR2, Full),
338 	__DEFINE_LINK_MODE_PARAMS(50000, KR2, Full),
339 	__DEFINE_LINK_MODE_PARAMS(100000, KR4, Full),
340 	__DEFINE_LINK_MODE_PARAMS(100000, SR4, Full),
341 	__DEFINE_LINK_MODE_PARAMS(100000, CR4, Full),
342 	__DEFINE_LINK_MODE_PARAMS(100000, LR4_ER4, Full),
343 	__DEFINE_LINK_MODE_PARAMS(50000, SR2, Full),
344 	__DEFINE_LINK_MODE_PARAMS(1000, X, Full),
345 	__DEFINE_LINK_MODE_PARAMS(10000, CR, Full),
346 	__DEFINE_LINK_MODE_PARAMS(10000, SR, Full),
347 	__DEFINE_LINK_MODE_PARAMS(10000, LR, Full),
348 	__DEFINE_LINK_MODE_PARAMS(10000, LRM, Full),
349 	__DEFINE_LINK_MODE_PARAMS(10000, ER, Full),
350 	__DEFINE_LINK_MODE_PARAMS(2500, T, Full),
351 	__DEFINE_LINK_MODE_PARAMS(5000, T, Full),
352 	__DEFINE_SPECIAL_MODE_PARAMS(FEC_NONE),
353 	__DEFINE_SPECIAL_MODE_PARAMS(FEC_RS),
354 	__DEFINE_SPECIAL_MODE_PARAMS(FEC_BASER),
355 	__DEFINE_LINK_MODE_PARAMS(50000, KR, Full),
356 	__DEFINE_LINK_MODE_PARAMS(50000, SR, Full),
357 	__DEFINE_LINK_MODE_PARAMS(50000, CR, Full),
358 	__DEFINE_LINK_MODE_PARAMS(50000, LR_ER_FR, Full),
359 	__DEFINE_LINK_MODE_PARAMS(50000, DR, Full),
360 	__DEFINE_LINK_MODE_PARAMS(100000, KR2, Full),
361 	__DEFINE_LINK_MODE_PARAMS(100000, SR2, Full),
362 	__DEFINE_LINK_MODE_PARAMS(100000, CR2, Full),
363 	__DEFINE_LINK_MODE_PARAMS(100000, LR2_ER2_FR2, Full),
364 	__DEFINE_LINK_MODE_PARAMS(100000, DR2, Full),
365 	__DEFINE_LINK_MODE_PARAMS(200000, KR4, Full),
366 	__DEFINE_LINK_MODE_PARAMS(200000, SR4, Full),
367 	__DEFINE_LINK_MODE_PARAMS(200000, LR4_ER4_FR4, Full),
368 	__DEFINE_LINK_MODE_PARAMS(200000, DR4, Full),
369 	__DEFINE_LINK_MODE_PARAMS(200000, CR4, Full),
370 	__DEFINE_LINK_MODE_PARAMS(100, T1, Full),
371 	__DEFINE_LINK_MODE_PARAMS(1000, T1, Full),
372 	__DEFINE_LINK_MODE_PARAMS(400000, KR8, Full),
373 	__DEFINE_LINK_MODE_PARAMS(400000, SR8, Full),
374 	__DEFINE_LINK_MODE_PARAMS(400000, LR8_ER8_FR8, Full),
375 	__DEFINE_LINK_MODE_PARAMS(400000, DR8, Full),
376 	__DEFINE_LINK_MODE_PARAMS(400000, CR8, Full),
377 	__DEFINE_SPECIAL_MODE_PARAMS(FEC_LLRS),
378 	__DEFINE_LINK_MODE_PARAMS(100000, KR, Full),
379 	__DEFINE_LINK_MODE_PARAMS(100000, SR, Full),
380 	__DEFINE_LINK_MODE_PARAMS(100000, LR_ER_FR, Full),
381 	__DEFINE_LINK_MODE_PARAMS(100000, DR, Full),
382 	__DEFINE_LINK_MODE_PARAMS(100000, CR, Full),
383 	__DEFINE_LINK_MODE_PARAMS(200000, KR2, Full),
384 	__DEFINE_LINK_MODE_PARAMS(200000, SR2, Full),
385 	__DEFINE_LINK_MODE_PARAMS(200000, LR2_ER2_FR2, Full),
386 	__DEFINE_LINK_MODE_PARAMS(200000, DR2, Full),
387 	__DEFINE_LINK_MODE_PARAMS(200000, CR2, Full),
388 	__DEFINE_LINK_MODE_PARAMS(400000, KR4, Full),
389 	__DEFINE_LINK_MODE_PARAMS(400000, SR4, Full),
390 	__DEFINE_LINK_MODE_PARAMS(400000, LR4_ER4_FR4, Full),
391 	__DEFINE_LINK_MODE_PARAMS(400000, DR4, Full),
392 	__DEFINE_LINK_MODE_PARAMS(400000, CR4, Full),
393 	__DEFINE_LINK_MODE_PARAMS(100, FX, Half),
394 	__DEFINE_LINK_MODE_PARAMS(100, FX, Full),
395 	__DEFINE_LINK_MODE_PARAMS(10, T1L, Full),
396 	__DEFINE_LINK_MODE_PARAMS(800000, CR8, Full),
397 	__DEFINE_LINK_MODE_PARAMS(800000, KR8, Full),
398 	__DEFINE_LINK_MODE_PARAMS(800000, DR8, Full),
399 	__DEFINE_LINK_MODE_PARAMS(800000, DR8_2, Full),
400 	__DEFINE_LINK_MODE_PARAMS(800000, SR8, Full),
401 	__DEFINE_LINK_MODE_PARAMS(800000, VR8, Full),
402 	__DEFINE_LINK_MODE_PARAMS(10, T1S, Full),
403 	__DEFINE_LINK_MODE_PARAMS(10, T1S, Half),
404 	__DEFINE_LINK_MODE_PARAMS(10, T1S_P2MP, Half),
405 	__DEFINE_LINK_MODE_PARAMS(10, T1BRR, Full),
406 	__DEFINE_LINK_MODE_PARAMS(200000, CR, Full),
407 	__DEFINE_LINK_MODE_PARAMS(200000, KR, Full),
408 	__DEFINE_LINK_MODE_PARAMS(200000, DR, Full),
409 	__DEFINE_LINK_MODE_PARAMS(200000, DR_2, Full),
410 	__DEFINE_LINK_MODE_PARAMS(200000, SR, Full),
411 	__DEFINE_LINK_MODE_PARAMS(200000, VR, Full),
412 	__DEFINE_LINK_MODE_PARAMS(400000, CR2, Full),
413 	__DEFINE_LINK_MODE_PARAMS(400000, KR2, Full),
414 	__DEFINE_LINK_MODE_PARAMS(400000, DR2, Full),
415 	__DEFINE_LINK_MODE_PARAMS(400000, DR2_2, Full),
416 	__DEFINE_LINK_MODE_PARAMS(400000, SR2, Full),
417 	__DEFINE_LINK_MODE_PARAMS(400000, VR2, Full),
418 	__DEFINE_LINK_MODE_PARAMS(800000, CR4, Full),
419 	__DEFINE_LINK_MODE_PARAMS(800000, KR4, Full),
420 	__DEFINE_LINK_MODE_PARAMS(800000, DR4, Full),
421 	__DEFINE_LINK_MODE_PARAMS(800000, DR4_2, Full),
422 	__DEFINE_LINK_MODE_PARAMS(800000, SR4, Full),
423 	__DEFINE_LINK_MODE_PARAMS(800000, VR4, Full),
424 };
425 static_assert(ARRAY_SIZE(link_mode_params) == __ETHTOOL_LINK_MODE_MASK_NBITS);
426 
427 const char netif_msg_class_names[][ETH_GSTRING_LEN] = {
428 	[NETIF_MSG_DRV_BIT]		= "drv",
429 	[NETIF_MSG_PROBE_BIT]		= "probe",
430 	[NETIF_MSG_LINK_BIT]		= "link",
431 	[NETIF_MSG_TIMER_BIT]		= "timer",
432 	[NETIF_MSG_IFDOWN_BIT]		= "ifdown",
433 	[NETIF_MSG_IFUP_BIT]		= "ifup",
434 	[NETIF_MSG_RX_ERR_BIT]		= "rx_err",
435 	[NETIF_MSG_TX_ERR_BIT]		= "tx_err",
436 	[NETIF_MSG_TX_QUEUED_BIT]	= "tx_queued",
437 	[NETIF_MSG_INTR_BIT]		= "intr",
438 	[NETIF_MSG_TX_DONE_BIT]		= "tx_done",
439 	[NETIF_MSG_RX_STATUS_BIT]	= "rx_status",
440 	[NETIF_MSG_PKTDATA_BIT]		= "pktdata",
441 	[NETIF_MSG_HW_BIT]		= "hw",
442 	[NETIF_MSG_WOL_BIT]		= "wol",
443 };
444 static_assert(ARRAY_SIZE(netif_msg_class_names) == NETIF_MSG_CLASS_COUNT);
445 
446 const char wol_mode_names[][ETH_GSTRING_LEN] = {
447 	[const_ilog2(WAKE_PHY)]		= "phy",
448 	[const_ilog2(WAKE_UCAST)]	= "ucast",
449 	[const_ilog2(WAKE_MCAST)]	= "mcast",
450 	[const_ilog2(WAKE_BCAST)]	= "bcast",
451 	[const_ilog2(WAKE_ARP)]		= "arp",
452 	[const_ilog2(WAKE_MAGIC)]	= "magic",
453 	[const_ilog2(WAKE_MAGICSECURE)]	= "magicsecure",
454 	[const_ilog2(WAKE_FILTER)]	= "filter",
455 };
456 static_assert(ARRAY_SIZE(wol_mode_names) == WOL_MODE_COUNT);
457 
458 const char sof_timestamping_names[][ETH_GSTRING_LEN] = {
459 	[const_ilog2(SOF_TIMESTAMPING_TX_HARDWARE)]  = "hardware-transmit",
460 	[const_ilog2(SOF_TIMESTAMPING_TX_SOFTWARE)]  = "software-transmit",
461 	[const_ilog2(SOF_TIMESTAMPING_RX_HARDWARE)]  = "hardware-receive",
462 	[const_ilog2(SOF_TIMESTAMPING_RX_SOFTWARE)]  = "software-receive",
463 	[const_ilog2(SOF_TIMESTAMPING_SOFTWARE)]     = "software-system-clock",
464 	[const_ilog2(SOF_TIMESTAMPING_SYS_HARDWARE)] = "hardware-legacy-clock",
465 	[const_ilog2(SOF_TIMESTAMPING_RAW_HARDWARE)] = "hardware-raw-clock",
466 	[const_ilog2(SOF_TIMESTAMPING_OPT_ID)]       = "option-id",
467 	[const_ilog2(SOF_TIMESTAMPING_TX_SCHED)]     = "sched-transmit",
468 	[const_ilog2(SOF_TIMESTAMPING_TX_ACK)]       = "ack-transmit",
469 	[const_ilog2(SOF_TIMESTAMPING_OPT_CMSG)]     = "option-cmsg",
470 	[const_ilog2(SOF_TIMESTAMPING_OPT_TSONLY)]   = "option-tsonly",
471 	[const_ilog2(SOF_TIMESTAMPING_OPT_STATS)]    = "option-stats",
472 	[const_ilog2(SOF_TIMESTAMPING_OPT_PKTINFO)]  = "option-pktinfo",
473 	[const_ilog2(SOF_TIMESTAMPING_OPT_TX_SWHW)]  = "option-tx-swhw",
474 	[const_ilog2(SOF_TIMESTAMPING_BIND_PHC)]     = "bind-phc",
475 	[const_ilog2(SOF_TIMESTAMPING_OPT_ID_TCP)]   = "option-id-tcp",
476 	[const_ilog2(SOF_TIMESTAMPING_OPT_RX_FILTER)] = "option-rx-filter",
477 };
478 static_assert(ARRAY_SIZE(sof_timestamping_names) == __SOF_TIMESTAMPING_CNT);
479 
480 const char ts_tx_type_names[][ETH_GSTRING_LEN] = {
481 	[HWTSTAMP_TX_OFF]		= "off",
482 	[HWTSTAMP_TX_ON]		= "on",
483 	[HWTSTAMP_TX_ONESTEP_SYNC]	= "onestep-sync",
484 	[HWTSTAMP_TX_ONESTEP_P2P]	= "onestep-p2p",
485 };
486 static_assert(ARRAY_SIZE(ts_tx_type_names) == __HWTSTAMP_TX_CNT);
487 
488 const char ts_rx_filter_names[][ETH_GSTRING_LEN] = {
489 	[HWTSTAMP_FILTER_NONE]			= "none",
490 	[HWTSTAMP_FILTER_ALL]			= "all",
491 	[HWTSTAMP_FILTER_SOME]			= "some",
492 	[HWTSTAMP_FILTER_PTP_V1_L4_EVENT]	= "ptpv1-l4-event",
493 	[HWTSTAMP_FILTER_PTP_V1_L4_SYNC]	= "ptpv1-l4-sync",
494 	[HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ]	= "ptpv1-l4-delay-req",
495 	[HWTSTAMP_FILTER_PTP_V2_L4_EVENT]	= "ptpv2-l4-event",
496 	[HWTSTAMP_FILTER_PTP_V2_L4_SYNC]	= "ptpv2-l4-sync",
497 	[HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ]	= "ptpv2-l4-delay-req",
498 	[HWTSTAMP_FILTER_PTP_V2_L2_EVENT]	= "ptpv2-l2-event",
499 	[HWTSTAMP_FILTER_PTP_V2_L2_SYNC]	= "ptpv2-l2-sync",
500 	[HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ]	= "ptpv2-l2-delay-req",
501 	[HWTSTAMP_FILTER_PTP_V2_EVENT]		= "ptpv2-event",
502 	[HWTSTAMP_FILTER_PTP_V2_SYNC]		= "ptpv2-sync",
503 	[HWTSTAMP_FILTER_PTP_V2_DELAY_REQ]	= "ptpv2-delay-req",
504 	[HWTSTAMP_FILTER_NTP_ALL]		= "ntp-all",
505 };
506 static_assert(ARRAY_SIZE(ts_rx_filter_names) == __HWTSTAMP_FILTER_CNT);
507 
508 const char ts_flags_names[][ETH_GSTRING_LEN] = {
509 	[const_ilog2(HWTSTAMP_FLAG_BONDED_PHC_INDEX)] = "bonded-phc-index",
510 };
511 static_assert(ARRAY_SIZE(ts_flags_names) == __HWTSTAMP_FLAG_CNT);
512 
513 const char udp_tunnel_type_names[][ETH_GSTRING_LEN] = {
514 	[ETHTOOL_UDP_TUNNEL_TYPE_VXLAN]		= "vxlan",
515 	[ETHTOOL_UDP_TUNNEL_TYPE_GENEVE]	= "geneve",
516 	[ETHTOOL_UDP_TUNNEL_TYPE_VXLAN_GPE]	= "vxlan-gpe",
517 };
518 static_assert(ARRAY_SIZE(udp_tunnel_type_names) ==
519 	      __ETHTOOL_UDP_TUNNEL_TYPE_CNT);
520 
521 /* return false if legacy contained non-0 deprecated fields
522  * maxtxpkt/maxrxpkt. rest of ksettings always updated
523  */
524 bool
525 convert_legacy_settings_to_link_ksettings(
526 	struct ethtool_link_ksettings *link_ksettings,
527 	const struct ethtool_cmd *legacy_settings)
528 {
529 	bool retval = true;
530 
531 	memset(link_ksettings, 0, sizeof(*link_ksettings));
532 
533 	/* This is used to tell users that driver is still using these
534 	 * deprecated legacy fields, and they should not use
535 	 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
536 	 */
537 	if (legacy_settings->maxtxpkt ||
538 	    legacy_settings->maxrxpkt)
539 		retval = false;
540 
541 	ethtool_convert_legacy_u32_to_link_mode(
542 		link_ksettings->link_modes.supported,
543 		legacy_settings->supported);
544 	ethtool_convert_legacy_u32_to_link_mode(
545 		link_ksettings->link_modes.advertising,
546 		legacy_settings->advertising);
547 	ethtool_convert_legacy_u32_to_link_mode(
548 		link_ksettings->link_modes.lp_advertising,
549 		legacy_settings->lp_advertising);
550 	link_ksettings->base.speed
551 		= ethtool_cmd_speed(legacy_settings);
552 	link_ksettings->base.duplex
553 		= legacy_settings->duplex;
554 	link_ksettings->base.port
555 		= legacy_settings->port;
556 	link_ksettings->base.phy_address
557 		= legacy_settings->phy_address;
558 	link_ksettings->base.autoneg
559 		= legacy_settings->autoneg;
560 	link_ksettings->base.mdio_support
561 		= legacy_settings->mdio_support;
562 	link_ksettings->base.eth_tp_mdix
563 		= legacy_settings->eth_tp_mdix;
564 	link_ksettings->base.eth_tp_mdix_ctrl
565 		= legacy_settings->eth_tp_mdix_ctrl;
566 	return retval;
567 }
568 
569 int __ethtool_get_link(struct net_device *dev)
570 {
571 	if (!dev->ethtool_ops->get_link)
572 		return -EOPNOTSUPP;
573 
574 	return netif_running(dev) && dev->ethtool_ops->get_link(dev);
575 }
576 
577 static int ethtool_get_rxnfc_rule_count(struct net_device *dev)
578 {
579 	const struct ethtool_ops *ops = dev->ethtool_ops;
580 	struct ethtool_rxnfc info = {
581 		.cmd = ETHTOOL_GRXCLSRLCNT,
582 	};
583 	int err;
584 
585 	err = ops->get_rxnfc(dev, &info, NULL);
586 	if (err)
587 		return err;
588 
589 	return info.rule_cnt;
590 }
591 
592 /* Max offset for one RSS context */
593 static u32 ethtool_get_rss_ctx_max_channel(struct ethtool_rxfh_context *ctx)
594 {
595 	u32 max_ring = 0;
596 	u32 i, *tbl;
597 
598 	if (WARN_ON_ONCE(!ctx))
599 		return 0;
600 	tbl = ethtool_rxfh_context_indir(ctx);
601 	for (i = 0; i < ctx->indir_size; i++)
602 		max_ring = max(max_ring, tbl[i]);
603 	return max_ring;
604 }
605 
606 static int ethtool_get_max_rxnfc_channel(struct net_device *dev, u64 *max)
607 {
608 	const struct ethtool_ops *ops = dev->ethtool_ops;
609 	struct ethtool_rxnfc *info;
610 	int err, i, rule_cnt;
611 	u64 max_ring = 0;
612 
613 	if (!ops->get_rxnfc)
614 		return -EOPNOTSUPP;
615 
616 	rule_cnt = ethtool_get_rxnfc_rule_count(dev);
617 	if (rule_cnt <= 0)
618 		return -EINVAL;
619 
620 	info = kvzalloc(struct_size(info, rule_locs, rule_cnt), GFP_KERNEL);
621 	if (!info)
622 		return -ENOMEM;
623 
624 	info->cmd = ETHTOOL_GRXCLSRLALL;
625 	info->rule_cnt = rule_cnt;
626 	err = ops->get_rxnfc(dev, info, info->rule_locs);
627 	if (err)
628 		goto err_free_info;
629 
630 	for (i = 0; i < rule_cnt; i++) {
631 		struct ethtool_rxnfc rule_info = {
632 			.cmd = ETHTOOL_GRXCLSRULE,
633 			.fs.location = info->rule_locs[i],
634 		};
635 
636 		err = ops->get_rxnfc(dev, &rule_info, NULL);
637 		if (err)
638 			goto err_free_info;
639 
640 		if (rule_info.fs.ring_cookie != RX_CLS_FLOW_DISC &&
641 		    rule_info.fs.ring_cookie != RX_CLS_FLOW_WAKE &&
642 		    !ethtool_get_flow_spec_ring_vf(rule_info.fs.ring_cookie)) {
643 			u64 ring = rule_info.fs.ring_cookie;
644 
645 			if (rule_info.flow_type & FLOW_RSS) {
646 				struct ethtool_rxfh_context *ctx;
647 
648 				ctx = xa_load(&dev->ethtool->rss_ctx,
649 					      rule_info.rss_context);
650 				ring += ethtool_get_rss_ctx_max_channel(ctx);
651 			}
652 			max_ring = max_t(u64, max_ring, ring);
653 		}
654 	}
655 
656 	kvfree(info);
657 	*max = max_ring;
658 	return 0;
659 
660 err_free_info:
661 	kvfree(info);
662 	return err;
663 }
664 
665 /* Max offset across all of a device's RSS contexts */
666 static u32 ethtool_get_max_rss_ctx_channel(struct net_device *dev)
667 {
668 	struct ethtool_rxfh_context *ctx;
669 	unsigned long context;
670 	u32 max_ring = 0;
671 
672 	mutex_lock(&dev->ethtool->rss_lock);
673 	xa_for_each(&dev->ethtool->rss_ctx, context, ctx)
674 		max_ring = max(max_ring, ethtool_get_rss_ctx_max_channel(ctx));
675 	mutex_unlock(&dev->ethtool->rss_lock);
676 
677 	return max_ring;
678 }
679 
680 static u32 ethtool_get_max_rxfh_channel(struct net_device *dev)
681 {
682 	struct ethtool_rxfh_param rxfh = {};
683 	u32 dev_size, current_max = 0;
684 	int ret;
685 
686 	/* While we do track whether RSS context has an indirection
687 	 * table explicitly set by the user, no driver looks at that bit.
688 	 * Assume drivers won't auto-regenerate the additional tables,
689 	 * to be safe.
690 	 */
691 	current_max = ethtool_get_max_rss_ctx_channel(dev);
692 
693 	if (!netif_is_rxfh_configured(dev))
694 		return current_max;
695 
696 	if (!dev->ethtool_ops->get_rxfh_indir_size ||
697 	    !dev->ethtool_ops->get_rxfh)
698 		return current_max;
699 	dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
700 	if (dev_size == 0)
701 		return current_max;
702 
703 	rxfh.indir = kcalloc(dev_size, sizeof(rxfh.indir[0]), GFP_USER);
704 	if (!rxfh.indir)
705 		return U32_MAX;
706 
707 	ret = dev->ethtool_ops->get_rxfh(dev, &rxfh);
708 	if (ret) {
709 		current_max = U32_MAX;
710 		goto out_free;
711 	}
712 
713 	while (dev_size--)
714 		current_max = max(current_max, rxfh.indir[dev_size]);
715 
716 out_free:
717 	kfree(rxfh.indir);
718 	return current_max;
719 }
720 
721 int ethtool_check_max_channel(struct net_device *dev,
722 			      struct ethtool_channels channels,
723 			      struct genl_info *info)
724 {
725 	u64 max_rxnfc_in_use;
726 	u32 max_rxfh_in_use;
727 	int max_mp_in_use;
728 
729 	/* ensure the new Rx count fits within the configured Rx flow
730 	 * indirection table/rxnfc settings
731 	 */
732 	if (ethtool_get_max_rxnfc_channel(dev, &max_rxnfc_in_use))
733 		max_rxnfc_in_use = 0;
734 	max_rxfh_in_use = ethtool_get_max_rxfh_channel(dev);
735 	if (channels.combined_count + channels.rx_count <= max_rxfh_in_use) {
736 		if (info)
737 			GENL_SET_ERR_MSG_FMT(info, "requested channel counts are too low for existing indirection table (%d)", max_rxfh_in_use);
738 		return -EINVAL;
739 	}
740 	if (channels.combined_count + channels.rx_count <= max_rxnfc_in_use) {
741 		if (info)
742 			GENL_SET_ERR_MSG(info, "requested channel counts are too low for existing ntuple filter settings");
743 		return -EINVAL;
744 	}
745 
746 	max_mp_in_use = dev_get_min_mp_channel_count(dev);
747 	if (channels.combined_count + channels.rx_count <= max_mp_in_use) {
748 		if (info)
749 			GENL_SET_ERR_MSG_FMT(info, "requested channel counts are too low for existing memory provider setting (%d)", max_mp_in_use);
750 		return -EINVAL;
751 	}
752 
753 	return 0;
754 }
755 
756 int ethtool_check_rss_ctx_busy(struct net_device *dev, u32 rss_context)
757 {
758 	const struct ethtool_ops *ops = dev->ethtool_ops;
759 	struct ethtool_rxnfc *info;
760 	int rc, i, rule_cnt;
761 
762 	if (!ops->get_rxnfc)
763 		return 0;
764 
765 	rule_cnt = ethtool_get_rxnfc_rule_count(dev);
766 	if (!rule_cnt)
767 		return 0;
768 
769 	if (rule_cnt < 0)
770 		return -EINVAL;
771 
772 	info = kvzalloc(struct_size(info, rule_locs, rule_cnt), GFP_KERNEL);
773 	if (!info)
774 		return -ENOMEM;
775 
776 	info->cmd = ETHTOOL_GRXCLSRLALL;
777 	info->rule_cnt = rule_cnt;
778 	rc = ops->get_rxnfc(dev, info, info->rule_locs);
779 	if (rc)
780 		goto out_free;
781 
782 	for (i = 0; i < rule_cnt; i++) {
783 		struct ethtool_rxnfc rule_info = {
784 			.cmd = ETHTOOL_GRXCLSRULE,
785 			.fs.location = info->rule_locs[i],
786 		};
787 
788 		rc = ops->get_rxnfc(dev, &rule_info, NULL);
789 		if (rc)
790 			goto out_free;
791 
792 		if (rule_info.fs.flow_type & FLOW_RSS &&
793 		    rule_info.rss_context == rss_context) {
794 			rc = -EBUSY;
795 			goto out_free;
796 		}
797 	}
798 
799 out_free:
800 	kvfree(info);
801 	return rc;
802 }
803 
804 int ethtool_check_ops(const struct ethtool_ops *ops)
805 {
806 	if (WARN_ON(ops->set_coalesce && !ops->supported_coalesce_params))
807 		return -EINVAL;
808 	if (WARN_ON(ops->rxfh_max_num_contexts == 1))
809 		return -EINVAL;
810 	/* NOTE: sufficiently insane drivers may swap ethtool_ops at runtime,
811 	 * the fact that ops are checked at registration time does not
812 	 * mean the ops attached to a netdev later on are sane.
813 	 */
814 	return 0;
815 }
816 
817 void ethtool_ringparam_get_cfg(struct net_device *dev,
818 			       struct ethtool_ringparam *param,
819 			       struct kernel_ethtool_ringparam *kparam,
820 			       struct netlink_ext_ack *extack)
821 {
822 	memset(param, 0, sizeof(*param));
823 	memset(kparam, 0, sizeof(*kparam));
824 
825 	param->cmd = ETHTOOL_GRINGPARAM;
826 	dev->ethtool_ops->get_ringparam(dev, param, kparam, extack);
827 
828 	/* Driver gives us current state, we want to return current config */
829 	kparam->tcp_data_split = dev->cfg->hds_config;
830 }
831 
832 static void ethtool_init_tsinfo(struct kernel_ethtool_ts_info *info)
833 {
834 	memset(info, 0, sizeof(*info));
835 	info->cmd = ETHTOOL_GET_TS_INFO;
836 	info->phc_index = -1;
837 }
838 
839 int ethtool_net_get_ts_info_by_phc(struct net_device *dev,
840 				   struct kernel_ethtool_ts_info *info,
841 				   struct hwtstamp_provider_desc *hwprov_desc)
842 {
843 	const struct ethtool_ops *ops = dev->ethtool_ops;
844 	int err;
845 
846 	if (!ops->get_ts_info)
847 		return -ENODEV;
848 
849 	/* Does ptp comes from netdev */
850 	ethtool_init_tsinfo(info);
851 	info->phc_qualifier = hwprov_desc->qualifier;
852 	err = ops->get_ts_info(dev, info);
853 	if (err)
854 		return err;
855 
856 	if (info->phc_index == hwprov_desc->index &&
857 	    net_support_hwtstamp_qualifier(dev, hwprov_desc->qualifier))
858 		return 0;
859 
860 	return -ENODEV;
861 }
862 
863 struct phy_device *
864 ethtool_phy_get_ts_info_by_phc(struct net_device *dev,
865 			       struct kernel_ethtool_ts_info *info,
866 			       struct hwtstamp_provider_desc *hwprov_desc)
867 {
868 	int err;
869 
870 	/* Only precise qualifier is supported in phydev */
871 	if (hwprov_desc->qualifier != HWTSTAMP_PROVIDER_QUALIFIER_PRECISE)
872 		return ERR_PTR(-ENODEV);
873 
874 	/* Look in the phy topology */
875 	if (dev->link_topo) {
876 		struct phy_device_node *pdn;
877 		unsigned long phy_index;
878 
879 		xa_for_each(&dev->link_topo->phys, phy_index, pdn) {
880 			if (!phy_has_tsinfo(pdn->phy))
881 				continue;
882 
883 			ethtool_init_tsinfo(info);
884 			err = phy_ts_info(pdn->phy, info);
885 			if (err)
886 				return ERR_PTR(err);
887 
888 			if (info->phc_index == hwprov_desc->index)
889 				return pdn->phy;
890 		}
891 		return ERR_PTR(-ENODEV);
892 	}
893 
894 	/* Look on the dev->phydev */
895 	if (phy_has_tsinfo(dev->phydev)) {
896 		ethtool_init_tsinfo(info);
897 		err = phy_ts_info(dev->phydev, info);
898 		if (err)
899 			return ERR_PTR(err);
900 
901 		if (info->phc_index == hwprov_desc->index)
902 			return dev->phydev;
903 	}
904 
905 	return ERR_PTR(-ENODEV);
906 }
907 
908 int ethtool_get_ts_info_by_phc(struct net_device *dev,
909 			       struct kernel_ethtool_ts_info *info,
910 			       struct hwtstamp_provider_desc *hwprov_desc)
911 {
912 	int err;
913 
914 	err = ethtool_net_get_ts_info_by_phc(dev, info, hwprov_desc);
915 	if (err == -ENODEV) {
916 		struct phy_device *phy;
917 
918 		phy = ethtool_phy_get_ts_info_by_phc(dev, info, hwprov_desc);
919 		if (IS_ERR(phy))
920 			err = PTR_ERR(phy);
921 		else
922 			err = 0;
923 	}
924 
925 	info->so_timestamping |= SOF_TIMESTAMPING_RX_SOFTWARE |
926 				 SOF_TIMESTAMPING_SOFTWARE;
927 
928 	return err;
929 }
930 
931 int __ethtool_get_ts_info(struct net_device *dev,
932 			  struct kernel_ethtool_ts_info *info)
933 {
934 	struct hwtstamp_provider *hwprov;
935 	int err = 0;
936 
937 	rcu_read_lock();
938 	hwprov = rcu_dereference(dev->hwprov);
939 	/* No provider specified, use default behavior */
940 	if (!hwprov) {
941 		const struct ethtool_ops *ops = dev->ethtool_ops;
942 		struct phy_device *phydev = dev->phydev;
943 
944 		ethtool_init_tsinfo(info);
945 		if (phy_is_default_hwtstamp(phydev) &&
946 		    phy_has_tsinfo(phydev))
947 			err = phy_ts_info(phydev, info);
948 		else if (ops->get_ts_info)
949 			err = ops->get_ts_info(dev, info);
950 
951 		info->so_timestamping |= SOF_TIMESTAMPING_RX_SOFTWARE |
952 					 SOF_TIMESTAMPING_SOFTWARE;
953 
954 		rcu_read_unlock();
955 		return err;
956 	}
957 
958 	err = ethtool_get_ts_info_by_phc(dev, info, &hwprov->desc);
959 	rcu_read_unlock();
960 	return err;
961 }
962 
963 bool net_support_hwtstamp_qualifier(struct net_device *dev,
964 				    enum hwtstamp_provider_qualifier qualifier)
965 {
966 	const struct ethtool_ops *ops = dev->ethtool_ops;
967 
968 	if (!ops)
969 		return false;
970 
971 	/* Return true with precise qualifier and with NIC without
972 	 * qualifier description to not break the old behavior.
973 	 */
974 	if (!ops->supported_hwtstamp_qualifiers &&
975 	    qualifier == HWTSTAMP_PROVIDER_QUALIFIER_PRECISE)
976 		return true;
977 
978 	if (ops->supported_hwtstamp_qualifiers & BIT(qualifier))
979 		return true;
980 
981 	return false;
982 }
983 
984 int ethtool_get_phc_vclocks(struct net_device *dev, int **vclock_index)
985 {
986 	struct kernel_ethtool_ts_info info = { };
987 	int num = 0;
988 
989 	if (!__ethtool_get_ts_info(dev, &info))
990 		num = ptp_get_vclocks_index(info.phc_index, vclock_index);
991 
992 	return num;
993 }
994 EXPORT_SYMBOL(ethtool_get_phc_vclocks);
995 
996 int ethtool_get_ts_info_by_layer(struct net_device *dev, struct kernel_ethtool_ts_info *info)
997 {
998 	return __ethtool_get_ts_info(dev, info);
999 }
1000 EXPORT_SYMBOL(ethtool_get_ts_info_by_layer);
1001 
1002 const struct ethtool_phy_ops *ethtool_phy_ops;
1003 
1004 void ethtool_set_ethtool_phy_ops(const struct ethtool_phy_ops *ops)
1005 {
1006 	ASSERT_RTNL();
1007 	ethtool_phy_ops = ops;
1008 }
1009 EXPORT_SYMBOL_GPL(ethtool_set_ethtool_phy_ops);
1010 
1011 void
1012 ethtool_params_from_link_mode(struct ethtool_link_ksettings *link_ksettings,
1013 			      enum ethtool_link_mode_bit_indices link_mode)
1014 {
1015 	const struct link_mode_info *link_info;
1016 
1017 	if (WARN_ON_ONCE(link_mode >= __ETHTOOL_LINK_MODE_MASK_NBITS))
1018 		return;
1019 
1020 	link_info = &link_mode_params[link_mode];
1021 	link_ksettings->base.speed = link_info->speed;
1022 	link_ksettings->lanes = link_info->lanes;
1023 	link_ksettings->base.duplex = link_info->duplex;
1024 }
1025 EXPORT_SYMBOL_GPL(ethtool_params_from_link_mode);
1026 
1027 /**
1028  * ethtool_forced_speed_maps_init
1029  * @maps: Pointer to an array of Ethtool forced speed map
1030  * @size: Array size
1031  *
1032  * Initialize an array of Ethtool forced speed map to Ethtool link modes. This
1033  * should be called during driver module init.
1034  */
1035 void
1036 ethtool_forced_speed_maps_init(struct ethtool_forced_speed_map *maps, u32 size)
1037 {
1038 	for (u32 i = 0; i < size; i++) {
1039 		struct ethtool_forced_speed_map *map = &maps[i];
1040 
1041 		linkmode_set_bit_array(map->cap_arr, map->arr_size, map->caps);
1042 		map->cap_arr = NULL;
1043 		map->arr_size = 0;
1044 	}
1045 }
1046 EXPORT_SYMBOL_GPL(ethtool_forced_speed_maps_init);
1047 
1048 void ethtool_rxfh_context_lost(struct net_device *dev, u32 context_id)
1049 {
1050 	struct ethtool_rxfh_context *ctx;
1051 
1052 	WARN_ONCE(!rtnl_is_locked() &&
1053 		  !lockdep_is_held_type(&dev->ethtool->rss_lock, -1),
1054 		  "RSS context lock assertion failed\n");
1055 
1056 	netdev_err(dev, "device error, RSS context %d lost\n", context_id);
1057 	ctx = xa_erase(&dev->ethtool->rss_ctx, context_id);
1058 	kfree(ctx);
1059 }
1060 EXPORT_SYMBOL(ethtool_rxfh_context_lost);
1061