developer | 7e32f7e | 2022-05-18 21:10:08 +0800 | [diff] [blame] | 1 | From c0e4eadfb8daf2e9557c7450f9b237c08b404419 Mon Sep 17 00:00:00 2001 |
| 2 | From: Antoine Tenart <antoine.tenart@bootlin.com> |
| 3 | Date: Mon, 13 Jan 2020 23:31:39 +0100 |
| 4 | Subject: net: macsec: move some definitions in a dedicated header |
| 5 | |
| 6 | This patch moves some structure, type and identifier definitions into a |
| 7 | MACsec specific header. This patch does not modify how the MACsec code |
| 8 | is running and only move things around. This is a preparation for the |
| 9 | future MACsec hardware offloading support, which will re-use those |
| 10 | definitions outside macsec.c. |
| 11 | |
| 12 | Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com> |
| 13 | Signed-off-by: David S. Miller <davem@davemloft.net> |
| 14 | --- |
| 15 | drivers/net/macsec.c | 164 +---------------------------------------------- |
| 16 | include/net/macsec.h | 177 +++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 17 | 2 files changed, 178 insertions(+), 163 deletions(-) |
| 18 | create mode 100644 include/net/macsec.h |
| 19 | |
| 20 | diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c |
| 21 | index afd8b2a082454..a336eee018f0b 100644 |
| 22 | --- a/drivers/net/macsec.c |
| 23 | +++ b/drivers/net/macsec.c |
| 24 | @@ -16,11 +16,10 @@ |
| 25 | #include <net/genetlink.h> |
| 26 | #include <net/sock.h> |
| 27 | #include <net/gro_cells.h> |
| 28 | +#include <net/macsec.h> |
| 29 | |
| 30 | #include <uapi/linux/if_macsec.h> |
| 31 | |
| 32 | -typedef u64 __bitwise sci_t; |
| 33 | - |
| 34 | #define MACSEC_SCI_LEN 8 |
| 35 | |
| 36 | /* SecTAG length = macsec_eth_header without the optional SCI */ |
| 37 | @@ -58,8 +57,6 @@ struct macsec_eth_header { |
| 38 | #define GCM_AES_IV_LEN 12 |
| 39 | #define DEFAULT_ICV_LEN 16 |
| 40 | |
| 41 | -#define MACSEC_NUM_AN 4 /* 2 bits for the association number */ |
| 42 | - |
| 43 | #define for_each_rxsc(secy, sc) \ |
| 44 | for (sc = rcu_dereference_bh(secy->rx_sc); \ |
| 45 | sc; \ |
| 46 | @@ -77,49 +74,6 @@ struct gcm_iv { |
| 47 | __be32 pn; |
| 48 | }; |
| 49 | |
| 50 | -/** |
| 51 | - * struct macsec_key - SA key |
| 52 | - * @id: user-provided key identifier |
| 53 | - * @tfm: crypto struct, key storage |
| 54 | - */ |
| 55 | -struct macsec_key { |
| 56 | - u8 id[MACSEC_KEYID_LEN]; |
| 57 | - struct crypto_aead *tfm; |
| 58 | -}; |
| 59 | - |
| 60 | -struct macsec_rx_sc_stats { |
| 61 | - __u64 InOctetsValidated; |
| 62 | - __u64 InOctetsDecrypted; |
| 63 | - __u64 InPktsUnchecked; |
| 64 | - __u64 InPktsDelayed; |
| 65 | - __u64 InPktsOK; |
| 66 | - __u64 InPktsInvalid; |
| 67 | - __u64 InPktsLate; |
| 68 | - __u64 InPktsNotValid; |
| 69 | - __u64 InPktsNotUsingSA; |
| 70 | - __u64 InPktsUnusedSA; |
| 71 | -}; |
| 72 | - |
| 73 | -struct macsec_rx_sa_stats { |
| 74 | - __u32 InPktsOK; |
| 75 | - __u32 InPktsInvalid; |
| 76 | - __u32 InPktsNotValid; |
| 77 | - __u32 InPktsNotUsingSA; |
| 78 | - __u32 InPktsUnusedSA; |
| 79 | -}; |
| 80 | - |
| 81 | -struct macsec_tx_sa_stats { |
| 82 | - __u32 OutPktsProtected; |
| 83 | - __u32 OutPktsEncrypted; |
| 84 | -}; |
| 85 | - |
| 86 | -struct macsec_tx_sc_stats { |
| 87 | - __u64 OutPktsProtected; |
| 88 | - __u64 OutPktsEncrypted; |
| 89 | - __u64 OutOctetsProtected; |
| 90 | - __u64 OutOctetsEncrypted; |
| 91 | -}; |
| 92 | - |
| 93 | struct macsec_dev_stats { |
| 94 | __u64 OutPktsUntagged; |
| 95 | __u64 InPktsUntagged; |
| 96 | @@ -131,124 +85,8 @@ struct macsec_dev_stats { |
| 97 | __u64 InPktsOverrun; |
| 98 | }; |
| 99 | |
| 100 | -/** |
| 101 | - * struct macsec_rx_sa - receive secure association |
| 102 | - * @active: |
| 103 | - * @next_pn: packet number expected for the next packet |
| 104 | - * @lock: protects next_pn manipulations |
| 105 | - * @key: key structure |
| 106 | - * @stats: per-SA stats |
| 107 | - */ |
| 108 | -struct macsec_rx_sa { |
| 109 | - struct macsec_key key; |
| 110 | - spinlock_t lock; |
| 111 | - u32 next_pn; |
| 112 | - refcount_t refcnt; |
| 113 | - bool active; |
| 114 | - struct macsec_rx_sa_stats __percpu *stats; |
| 115 | - struct macsec_rx_sc *sc; |
| 116 | - struct rcu_head rcu; |
| 117 | -}; |
| 118 | - |
| 119 | -struct pcpu_rx_sc_stats { |
| 120 | - struct macsec_rx_sc_stats stats; |
| 121 | - struct u64_stats_sync syncp; |
| 122 | -}; |
| 123 | - |
| 124 | -/** |
| 125 | - * struct macsec_rx_sc - receive secure channel |
| 126 | - * @sci: secure channel identifier for this SC |
| 127 | - * @active: channel is active |
| 128 | - * @sa: array of secure associations |
| 129 | - * @stats: per-SC stats |
| 130 | - */ |
| 131 | -struct macsec_rx_sc { |
| 132 | - struct macsec_rx_sc __rcu *next; |
| 133 | - sci_t sci; |
| 134 | - bool active; |
| 135 | - struct macsec_rx_sa __rcu *sa[MACSEC_NUM_AN]; |
| 136 | - struct pcpu_rx_sc_stats __percpu *stats; |
| 137 | - refcount_t refcnt; |
| 138 | - struct rcu_head rcu_head; |
| 139 | -}; |
| 140 | - |
| 141 | -/** |
| 142 | - * struct macsec_tx_sa - transmit secure association |
| 143 | - * @active: |
| 144 | - * @next_pn: packet number to use for the next packet |
| 145 | - * @lock: protects next_pn manipulations |
| 146 | - * @key: key structure |
| 147 | - * @stats: per-SA stats |
| 148 | - */ |
| 149 | -struct macsec_tx_sa { |
| 150 | - struct macsec_key key; |
| 151 | - spinlock_t lock; |
| 152 | - u32 next_pn; |
| 153 | - refcount_t refcnt; |
| 154 | - bool active; |
| 155 | - struct macsec_tx_sa_stats __percpu *stats; |
| 156 | - struct rcu_head rcu; |
| 157 | -}; |
| 158 | - |
| 159 | -struct pcpu_tx_sc_stats { |
| 160 | - struct macsec_tx_sc_stats stats; |
| 161 | - struct u64_stats_sync syncp; |
| 162 | -}; |
| 163 | - |
| 164 | -/** |
| 165 | - * struct macsec_tx_sc - transmit secure channel |
| 166 | - * @active: |
| 167 | - * @encoding_sa: association number of the SA currently in use |
| 168 | - * @encrypt: encrypt packets on transmit, or authenticate only |
| 169 | - * @send_sci: always include the SCI in the SecTAG |
| 170 | - * @end_station: |
| 171 | - * @scb: single copy broadcast flag |
| 172 | - * @sa: array of secure associations |
| 173 | - * @stats: stats for this TXSC |
| 174 | - */ |
| 175 | -struct macsec_tx_sc { |
| 176 | - bool active; |
| 177 | - u8 encoding_sa; |
| 178 | - bool encrypt; |
| 179 | - bool send_sci; |
| 180 | - bool end_station; |
| 181 | - bool scb; |
| 182 | - struct macsec_tx_sa __rcu *sa[MACSEC_NUM_AN]; |
| 183 | - struct pcpu_tx_sc_stats __percpu *stats; |
| 184 | -}; |
| 185 | - |
| 186 | #define MACSEC_VALIDATE_DEFAULT MACSEC_VALIDATE_STRICT |
| 187 | |
| 188 | -/** |
| 189 | - * struct macsec_secy - MACsec Security Entity |
| 190 | - * @netdev: netdevice for this SecY |
| 191 | - * @n_rx_sc: number of receive secure channels configured on this SecY |
| 192 | - * @sci: secure channel identifier used for tx |
| 193 | - * @key_len: length of keys used by the cipher suite |
| 194 | - * @icv_len: length of ICV used by the cipher suite |
| 195 | - * @validate_frames: validation mode |
| 196 | - * @operational: MAC_Operational flag |
| 197 | - * @protect_frames: enable protection for this SecY |
| 198 | - * @replay_protect: enable packet number checks on receive |
| 199 | - * @replay_window: size of the replay window |
| 200 | - * @tx_sc: transmit secure channel |
| 201 | - * @rx_sc: linked list of receive secure channels |
| 202 | - */ |
| 203 | -struct macsec_secy { |
| 204 | - struct net_device *netdev; |
| 205 | - unsigned int n_rx_sc; |
| 206 | - sci_t sci; |
| 207 | - u16 key_len; |
| 208 | - u16 icv_len; |
| 209 | - enum macsec_validation_type validate_frames; |
| 210 | - bool operational; |
| 211 | - bool protect_frames; |
| 212 | - bool replay_protect; |
| 213 | - u32 replay_window; |
| 214 | - struct macsec_tx_sc tx_sc; |
| 215 | - struct macsec_rx_sc __rcu *rx_sc; |
| 216 | -}; |
| 217 | - |
| 218 | struct pcpu_secy_stats { |
| 219 | struct macsec_dev_stats stats; |
| 220 | struct u64_stats_sync syncp; |
| 221 | diff --git a/include/net/macsec.h b/include/net/macsec.h |
| 222 | new file mode 100644 |
| 223 | index 0000000000000..e7b41c1043f6f |
| 224 | --- /dev/null |
| 225 | +++ b/include/net/macsec.h |
| 226 | @@ -0,0 +1,177 @@ |
| 227 | +/* SPDX-License-Identifier: GPL-2.0+ */ |
| 228 | +/* |
| 229 | + * MACsec netdev header, used for h/w accelerated implementations. |
| 230 | + * |
| 231 | + * Copyright (c) 2015 Sabrina Dubroca <sd@queasysnail.net> |
| 232 | + */ |
| 233 | +#ifndef _NET_MACSEC_H_ |
| 234 | +#define _NET_MACSEC_H_ |
| 235 | + |
| 236 | +#include <linux/u64_stats_sync.h> |
| 237 | +#include <uapi/linux/if_link.h> |
| 238 | +#include <uapi/linux/if_macsec.h> |
| 239 | + |
| 240 | +typedef u64 __bitwise sci_t; |
| 241 | + |
| 242 | +#define MACSEC_NUM_AN 4 /* 2 bits for the association number */ |
| 243 | + |
| 244 | +/** |
| 245 | + * struct macsec_key - SA key |
| 246 | + * @id: user-provided key identifier |
| 247 | + * @tfm: crypto struct, key storage |
| 248 | + */ |
| 249 | +struct macsec_key { |
| 250 | + u8 id[MACSEC_KEYID_LEN]; |
| 251 | + struct crypto_aead *tfm; |
| 252 | +}; |
| 253 | + |
| 254 | +struct macsec_rx_sc_stats { |
| 255 | + __u64 InOctetsValidated; |
| 256 | + __u64 InOctetsDecrypted; |
| 257 | + __u64 InPktsUnchecked; |
| 258 | + __u64 InPktsDelayed; |
| 259 | + __u64 InPktsOK; |
| 260 | + __u64 InPktsInvalid; |
| 261 | + __u64 InPktsLate; |
| 262 | + __u64 InPktsNotValid; |
| 263 | + __u64 InPktsNotUsingSA; |
| 264 | + __u64 InPktsUnusedSA; |
| 265 | +}; |
| 266 | + |
| 267 | +struct macsec_rx_sa_stats { |
| 268 | + __u32 InPktsOK; |
| 269 | + __u32 InPktsInvalid; |
| 270 | + __u32 InPktsNotValid; |
| 271 | + __u32 InPktsNotUsingSA; |
| 272 | + __u32 InPktsUnusedSA; |
| 273 | +}; |
| 274 | + |
| 275 | +struct macsec_tx_sa_stats { |
| 276 | + __u32 OutPktsProtected; |
| 277 | + __u32 OutPktsEncrypted; |
| 278 | +}; |
| 279 | + |
| 280 | +struct macsec_tx_sc_stats { |
| 281 | + __u64 OutPktsProtected; |
| 282 | + __u64 OutPktsEncrypted; |
| 283 | + __u64 OutOctetsProtected; |
| 284 | + __u64 OutOctetsEncrypted; |
| 285 | +}; |
| 286 | + |
| 287 | +/** |
| 288 | + * struct macsec_rx_sa - receive secure association |
| 289 | + * @active: |
| 290 | + * @next_pn: packet number expected for the next packet |
| 291 | + * @lock: protects next_pn manipulations |
| 292 | + * @key: key structure |
| 293 | + * @stats: per-SA stats |
| 294 | + */ |
| 295 | +struct macsec_rx_sa { |
| 296 | + struct macsec_key key; |
| 297 | + spinlock_t lock; |
| 298 | + u32 next_pn; |
| 299 | + refcount_t refcnt; |
| 300 | + bool active; |
| 301 | + struct macsec_rx_sa_stats __percpu *stats; |
| 302 | + struct macsec_rx_sc *sc; |
| 303 | + struct rcu_head rcu; |
| 304 | +}; |
| 305 | + |
| 306 | +struct pcpu_rx_sc_stats { |
| 307 | + struct macsec_rx_sc_stats stats; |
| 308 | + struct u64_stats_sync syncp; |
| 309 | +}; |
| 310 | + |
| 311 | +struct pcpu_tx_sc_stats { |
| 312 | + struct macsec_tx_sc_stats stats; |
| 313 | + struct u64_stats_sync syncp; |
| 314 | +}; |
| 315 | + |
| 316 | +/** |
| 317 | + * struct macsec_rx_sc - receive secure channel |
| 318 | + * @sci: secure channel identifier for this SC |
| 319 | + * @active: channel is active |
| 320 | + * @sa: array of secure associations |
| 321 | + * @stats: per-SC stats |
| 322 | + */ |
| 323 | +struct macsec_rx_sc { |
| 324 | + struct macsec_rx_sc __rcu *next; |
| 325 | + sci_t sci; |
| 326 | + bool active; |
| 327 | + struct macsec_rx_sa __rcu *sa[MACSEC_NUM_AN]; |
| 328 | + struct pcpu_rx_sc_stats __percpu *stats; |
| 329 | + refcount_t refcnt; |
| 330 | + struct rcu_head rcu_head; |
| 331 | +}; |
| 332 | + |
| 333 | +/** |
| 334 | + * struct macsec_tx_sa - transmit secure association |
| 335 | + * @active: |
| 336 | + * @next_pn: packet number to use for the next packet |
| 337 | + * @lock: protects next_pn manipulations |
| 338 | + * @key: key structure |
| 339 | + * @stats: per-SA stats |
| 340 | + */ |
| 341 | +struct macsec_tx_sa { |
| 342 | + struct macsec_key key; |
| 343 | + spinlock_t lock; |
| 344 | + u32 next_pn; |
| 345 | + refcount_t refcnt; |
| 346 | + bool active; |
| 347 | + struct macsec_tx_sa_stats __percpu *stats; |
| 348 | + struct rcu_head rcu; |
| 349 | +}; |
| 350 | + |
| 351 | +/** |
| 352 | + * struct macsec_tx_sc - transmit secure channel |
| 353 | + * @active: |
| 354 | + * @encoding_sa: association number of the SA currently in use |
| 355 | + * @encrypt: encrypt packets on transmit, or authenticate only |
| 356 | + * @send_sci: always include the SCI in the SecTAG |
| 357 | + * @end_station: |
| 358 | + * @scb: single copy broadcast flag |
| 359 | + * @sa: array of secure associations |
| 360 | + * @stats: stats for this TXSC |
| 361 | + */ |
| 362 | +struct macsec_tx_sc { |
| 363 | + bool active; |
| 364 | + u8 encoding_sa; |
| 365 | + bool encrypt; |
| 366 | + bool send_sci; |
| 367 | + bool end_station; |
| 368 | + bool scb; |
| 369 | + struct macsec_tx_sa __rcu *sa[MACSEC_NUM_AN]; |
| 370 | + struct pcpu_tx_sc_stats __percpu *stats; |
| 371 | +}; |
| 372 | + |
| 373 | +/** |
| 374 | + * struct macsec_secy - MACsec Security Entity |
| 375 | + * @netdev: netdevice for this SecY |
| 376 | + * @n_rx_sc: number of receive secure channels configured on this SecY |
| 377 | + * @sci: secure channel identifier used for tx |
| 378 | + * @key_len: length of keys used by the cipher suite |
| 379 | + * @icv_len: length of ICV used by the cipher suite |
| 380 | + * @validate_frames: validation mode |
| 381 | + * @operational: MAC_Operational flag |
| 382 | + * @protect_frames: enable protection for this SecY |
| 383 | + * @replay_protect: enable packet number checks on receive |
| 384 | + * @replay_window: size of the replay window |
| 385 | + * @tx_sc: transmit secure channel |
| 386 | + * @rx_sc: linked list of receive secure channels |
| 387 | + */ |
| 388 | +struct macsec_secy { |
| 389 | + struct net_device *netdev; |
| 390 | + unsigned int n_rx_sc; |
| 391 | + sci_t sci; |
| 392 | + u16 key_len; |
| 393 | + u16 icv_len; |
| 394 | + enum macsec_validation_type validate_frames; |
| 395 | + bool operational; |
| 396 | + bool protect_frames; |
| 397 | + bool replay_protect; |
| 398 | + u32 replay_window; |
| 399 | + struct macsec_tx_sc tx_sc; |
| 400 | + struct macsec_rx_sc __rcu *rx_sc; |
| 401 | +}; |
| 402 | + |
| 403 | +#endif /* _NET_MACSEC_H_ */ |
| 404 | -- |
| 405 | cgit 1.2.3-1.el7 |
| 406 | |