2 * drivers/net/macsec.c - MACsec device
4 * Copyright (c) 2015 Sabrina Dubroca <sd@queasysnail.net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
12 #include <linux/types.h>
13 #include <linux/skbuff.h>
14 #include <linux/socket.h>
15 #include <linux/module.h>
16 #include <crypto/aead.h>
17 #include <linux/etherdevice.h>
18 #include <linux/rtnetlink.h>
19 #include <net/genetlink.h>
21 #include <net/gro_cells.h>
23 #include <uapi/linux/if_macsec.h>
25 typedef u64 __bitwise sci_t
;
27 #define MACSEC_SCI_LEN 8
29 /* SecTAG length = macsec_eth_header without the optional SCI */
30 #define MACSEC_TAG_LEN 6
32 struct macsec_eth_header
{
36 #if defined(__LITTLE_ENDIAN_BITFIELD)
39 #elif defined(__BIG_ENDIAN_BITFIELD)
43 #error "Please fix <asm/byteorder.h>"
46 u8 secure_channel_id
[8]; /* optional */
49 #define MACSEC_TCI_VERSION 0x80
50 #define MACSEC_TCI_ES 0x40 /* end station */
51 #define MACSEC_TCI_SC 0x20 /* SCI present */
52 #define MACSEC_TCI_SCB 0x10 /* epon */
53 #define MACSEC_TCI_E 0x08 /* encryption */
54 #define MACSEC_TCI_C 0x04 /* changed text */
55 #define MACSEC_AN_MASK 0x03 /* association number */
56 #define MACSEC_TCI_CONFID (MACSEC_TCI_E | MACSEC_TCI_C)
58 /* minimum secure data length deemed "not short", see IEEE 802.1AE-2006 9.7 */
59 #define MIN_NON_SHORT_LEN 48
61 #define GCM_AES_IV_LEN 12
62 #define DEFAULT_ICV_LEN 16
64 #define MACSEC_NUM_AN 4 /* 2 bits for the association number */
66 #define for_each_rxsc(secy, sc) \
67 for (sc = rcu_dereference_bh(secy->rx_sc); \
69 sc = rcu_dereference_bh(sc->next))
70 #define for_each_rxsc_rtnl(secy, sc) \
71 for (sc = rtnl_dereference(secy->rx_sc); \
73 sc = rtnl_dereference(sc->next))
77 u8 secure_channel_id
[8];
84 * struct macsec_key - SA key
85 * @id: user-provided key identifier
86 * @tfm: crypto struct, key storage
89 u8 id
[MACSEC_KEYID_LEN
];
90 struct crypto_aead
*tfm
;
93 struct macsec_rx_sc_stats
{
94 __u64 InOctetsValidated
;
95 __u64 InOctetsDecrypted
;
96 __u64 InPktsUnchecked
;
101 __u64 InPktsNotValid
;
102 __u64 InPktsNotUsingSA
;
103 __u64 InPktsUnusedSA
;
106 struct macsec_rx_sa_stats
{
109 __u32 InPktsNotValid
;
110 __u32 InPktsNotUsingSA
;
111 __u32 InPktsUnusedSA
;
114 struct macsec_tx_sa_stats
{
115 __u32 OutPktsProtected
;
116 __u32 OutPktsEncrypted
;
119 struct macsec_tx_sc_stats
{
120 __u64 OutPktsProtected
;
121 __u64 OutPktsEncrypted
;
122 __u64 OutOctetsProtected
;
123 __u64 OutOctetsEncrypted
;
126 struct macsec_dev_stats
{
127 __u64 OutPktsUntagged
;
128 __u64 InPktsUntagged
;
129 __u64 OutPktsTooLong
;
132 __u64 InPktsUnknownSCI
;
138 * struct macsec_rx_sa - receive secure association
140 * @next_pn: packet number expected for the next packet
141 * @lock: protects next_pn manipulations
142 * @key: key structure
143 * @stats: per-SA stats
145 struct macsec_rx_sa
{
146 struct macsec_key key
;
151 struct macsec_rx_sa_stats __percpu
*stats
;
152 struct macsec_rx_sc
*sc
;
156 struct pcpu_rx_sc_stats
{
157 struct macsec_rx_sc_stats stats
;
158 struct u64_stats_sync syncp
;
162 * struct macsec_rx_sc - receive secure channel
163 * @sci: secure channel identifier for this SC
164 * @active: channel is active
165 * @sa: array of secure associations
166 * @stats: per-SC stats
168 struct macsec_rx_sc
{
169 struct macsec_rx_sc __rcu
*next
;
172 struct macsec_rx_sa __rcu
*sa
[MACSEC_NUM_AN
];
173 struct pcpu_rx_sc_stats __percpu
*stats
;
175 struct rcu_head rcu_head
;
179 * struct macsec_tx_sa - transmit secure association
181 * @next_pn: packet number to use for the next packet
182 * @lock: protects next_pn manipulations
183 * @key: key structure
184 * @stats: per-SA stats
186 struct macsec_tx_sa
{
187 struct macsec_key key
;
192 struct macsec_tx_sa_stats __percpu
*stats
;
196 struct pcpu_tx_sc_stats
{
197 struct macsec_tx_sc_stats stats
;
198 struct u64_stats_sync syncp
;
202 * struct macsec_tx_sc - transmit secure channel
204 * @encoding_sa: association number of the SA currently in use
205 * @encrypt: encrypt packets on transmit, or authenticate only
206 * @send_sci: always include the SCI in the SecTAG
208 * @scb: single copy broadcast flag
209 * @sa: array of secure associations
210 * @stats: stats for this TXSC
212 struct macsec_tx_sc
{
219 struct macsec_tx_sa __rcu
*sa
[MACSEC_NUM_AN
];
220 struct pcpu_tx_sc_stats __percpu
*stats
;
223 #define MACSEC_VALIDATE_DEFAULT MACSEC_VALIDATE_STRICT
226 * struct macsec_secy - MACsec Security Entity
227 * @netdev: netdevice for this SecY
228 * @n_rx_sc: number of receive secure channels configured on this SecY
229 * @sci: secure channel identifier used for tx
230 * @key_len: length of keys used by the cipher suite
231 * @icv_len: length of ICV used by the cipher suite
232 * @validate_frames: validation mode
233 * @operational: MAC_Operational flag
234 * @protect_frames: enable protection for this SecY
235 * @replay_protect: enable packet number checks on receive
236 * @replay_window: size of the replay window
237 * @tx_sc: transmit secure channel
238 * @rx_sc: linked list of receive secure channels
241 struct net_device
*netdev
;
242 unsigned int n_rx_sc
;
246 enum macsec_validation_type validate_frames
;
251 struct macsec_tx_sc tx_sc
;
252 struct macsec_rx_sc __rcu
*rx_sc
;
255 struct pcpu_secy_stats
{
256 struct macsec_dev_stats stats
;
257 struct u64_stats_sync syncp
;
261 * struct macsec_dev - private data
263 * @real_dev: pointer to underlying netdevice
264 * @stats: MACsec device stats
265 * @secys: linked list of SecY's on the underlying device
268 struct macsec_secy secy
;
269 struct net_device
*real_dev
;
270 struct pcpu_secy_stats __percpu
*stats
;
271 struct list_head secys
;
272 struct gro_cells gro_cells
;
273 unsigned int nest_level
;
277 * struct macsec_rxh_data - rx_handler private argument
278 * @secys: linked list of SecY's on this underlying device
280 struct macsec_rxh_data
{
281 struct list_head secys
;
284 static struct macsec_dev
*macsec_priv(const struct net_device
*dev
)
286 return (struct macsec_dev
*)netdev_priv(dev
);
289 static struct macsec_rxh_data
*macsec_data_rcu(const struct net_device
*dev
)
291 return rcu_dereference_bh(dev
->rx_handler_data
);
294 static struct macsec_rxh_data
*macsec_data_rtnl(const struct net_device
*dev
)
296 return rtnl_dereference(dev
->rx_handler_data
);
300 struct aead_request
*req
;
302 struct macsec_tx_sa
*tx_sa
;
303 struct macsec_rx_sa
*rx_sa
;
310 static struct macsec_rx_sa
*macsec_rxsa_get(struct macsec_rx_sa __rcu
*ptr
)
312 struct macsec_rx_sa
*sa
= rcu_dereference_bh(ptr
);
314 if (!sa
|| !sa
->active
)
317 if (!atomic_inc_not_zero(&sa
->refcnt
))
323 static void free_rx_sc_rcu(struct rcu_head
*head
)
325 struct macsec_rx_sc
*rx_sc
= container_of(head
, struct macsec_rx_sc
, rcu_head
);
327 free_percpu(rx_sc
->stats
);
331 static struct macsec_rx_sc
*macsec_rxsc_get(struct macsec_rx_sc
*sc
)
333 return atomic_inc_not_zero(&sc
->refcnt
) ? sc
: NULL
;
336 static void macsec_rxsc_put(struct macsec_rx_sc
*sc
)
338 if (atomic_dec_and_test(&sc
->refcnt
))
339 call_rcu(&sc
->rcu_head
, free_rx_sc_rcu
);
342 static void free_rxsa(struct rcu_head
*head
)
344 struct macsec_rx_sa
*sa
= container_of(head
, struct macsec_rx_sa
, rcu
);
346 crypto_free_aead(sa
->key
.tfm
);
347 free_percpu(sa
->stats
);
351 static void macsec_rxsa_put(struct macsec_rx_sa
*sa
)
353 if (atomic_dec_and_test(&sa
->refcnt
))
354 call_rcu(&sa
->rcu
, free_rxsa
);
357 static struct macsec_tx_sa
*macsec_txsa_get(struct macsec_tx_sa __rcu
*ptr
)
359 struct macsec_tx_sa
*sa
= rcu_dereference_bh(ptr
);
361 if (!sa
|| !sa
->active
)
364 if (!atomic_inc_not_zero(&sa
->refcnt
))
370 static void free_txsa(struct rcu_head
*head
)
372 struct macsec_tx_sa
*sa
= container_of(head
, struct macsec_tx_sa
, rcu
);
374 crypto_free_aead(sa
->key
.tfm
);
375 free_percpu(sa
->stats
);
379 static void macsec_txsa_put(struct macsec_tx_sa
*sa
)
381 if (atomic_dec_and_test(&sa
->refcnt
))
382 call_rcu(&sa
->rcu
, free_txsa
);
385 static struct macsec_cb
*macsec_skb_cb(struct sk_buff
*skb
)
387 BUILD_BUG_ON(sizeof(struct macsec_cb
) > sizeof(skb
->cb
));
388 return (struct macsec_cb
*)skb
->cb
;
391 #define MACSEC_PORT_ES (htons(0x0001))
392 #define MACSEC_PORT_SCB (0x0000)
393 #define MACSEC_UNDEF_SCI ((__force sci_t)0xffffffffffffffffULL)
395 #define DEFAULT_SAK_LEN 16
396 #define DEFAULT_SEND_SCI true
397 #define DEFAULT_ENCRYPT false
398 #define DEFAULT_ENCODING_SA 0
400 static bool send_sci(const struct macsec_secy
*secy
)
402 const struct macsec_tx_sc
*tx_sc
= &secy
->tx_sc
;
404 return tx_sc
->send_sci
||
405 (secy
->n_rx_sc
> 1 && !tx_sc
->end_station
&& !tx_sc
->scb
);
408 static sci_t
make_sci(u8
*addr
, __be16 port
)
412 memcpy(&sci
, addr
, ETH_ALEN
);
413 memcpy(((char *)&sci
) + ETH_ALEN
, &port
, sizeof(port
));
418 static sci_t
macsec_frame_sci(struct macsec_eth_header
*hdr
, bool sci_present
)
423 memcpy(&sci
, hdr
->secure_channel_id
,
424 sizeof(hdr
->secure_channel_id
));
426 sci
= make_sci(hdr
->eth
.h_source
, MACSEC_PORT_ES
);
431 static unsigned int macsec_sectag_len(bool sci_present
)
433 return MACSEC_TAG_LEN
+ (sci_present
? MACSEC_SCI_LEN
: 0);
436 static unsigned int macsec_hdr_len(bool sci_present
)
438 return macsec_sectag_len(sci_present
) + ETH_HLEN
;
441 static unsigned int macsec_extra_len(bool sci_present
)
443 return macsec_sectag_len(sci_present
) + sizeof(__be16
);
446 /* Fill SecTAG according to IEEE 802.1AE-2006 10.5.3 */
447 static void macsec_fill_sectag(struct macsec_eth_header
*h
,
448 const struct macsec_secy
*secy
, u32 pn
,
451 const struct macsec_tx_sc
*tx_sc
= &secy
->tx_sc
;
453 memset(&h
->tci_an
, 0, macsec_sectag_len(sci_present
));
454 h
->eth
.h_proto
= htons(ETH_P_MACSEC
);
457 h
->tci_an
|= MACSEC_TCI_SC
;
458 memcpy(&h
->secure_channel_id
, &secy
->sci
,
459 sizeof(h
->secure_channel_id
));
461 if (tx_sc
->end_station
)
462 h
->tci_an
|= MACSEC_TCI_ES
;
464 h
->tci_an
|= MACSEC_TCI_SCB
;
467 h
->packet_number
= htonl(pn
);
469 /* with GCM, C/E clear for !encrypt, both set for encrypt */
471 h
->tci_an
|= MACSEC_TCI_CONFID
;
472 else if (secy
->icv_len
!= DEFAULT_ICV_LEN
)
473 h
->tci_an
|= MACSEC_TCI_C
;
475 h
->tci_an
|= tx_sc
->encoding_sa
;
478 static void macsec_set_shortlen(struct macsec_eth_header
*h
, size_t data_len
)
480 if (data_len
< MIN_NON_SHORT_LEN
)
481 h
->short_length
= data_len
;
484 /* validate MACsec packet according to IEEE 802.1AE-2006 9.12 */
485 static bool macsec_validate_skb(struct sk_buff
*skb
, u16 icv_len
)
487 struct macsec_eth_header
*h
= (struct macsec_eth_header
*)skb
->data
;
488 int len
= skb
->len
- 2 * ETH_ALEN
;
489 int extra_len
= macsec_extra_len(!!(h
->tci_an
& MACSEC_TCI_SC
)) + icv_len
;
491 /* a) It comprises at least 17 octets */
495 /* b) MACsec EtherType: already checked */
497 /* c) V bit is clear */
498 if (h
->tci_an
& MACSEC_TCI_VERSION
)
501 /* d) ES or SCB => !SC */
502 if ((h
->tci_an
& MACSEC_TCI_ES
|| h
->tci_an
& MACSEC_TCI_SCB
) &&
503 (h
->tci_an
& MACSEC_TCI_SC
))
506 /* e) Bits 7 and 8 of octet 4 of the SecTAG are clear */
510 /* rx.pn != 0 (figure 10-5) */
511 if (!h
->packet_number
)
514 /* length check, f) g) h) i) */
516 return len
== extra_len
+ h
->short_length
;
517 return len
>= extra_len
+ MIN_NON_SHORT_LEN
;
520 #define MACSEC_NEEDED_HEADROOM (macsec_extra_len(true))
521 #define MACSEC_NEEDED_TAILROOM MACSEC_STD_ICV_LEN
523 static void macsec_fill_iv(unsigned char *iv
, sci_t sci
, u32 pn
)
525 struct gcm_iv
*gcm_iv
= (struct gcm_iv
*)iv
;
528 gcm_iv
->pn
= htonl(pn
);
531 static struct macsec_eth_header
*macsec_ethhdr(struct sk_buff
*skb
)
533 return (struct macsec_eth_header
*)skb_mac_header(skb
);
536 static u32
tx_sa_update_pn(struct macsec_tx_sa
*tx_sa
, struct macsec_secy
*secy
)
540 spin_lock_bh(&tx_sa
->lock
);
544 if (tx_sa
->next_pn
== 0) {
545 pr_debug("PN wrapped, transitioning to !oper\n");
546 tx_sa
->active
= false;
547 if (secy
->protect_frames
)
548 secy
->operational
= false;
550 spin_unlock_bh(&tx_sa
->lock
);
555 static void macsec_encrypt_finish(struct sk_buff
*skb
, struct net_device
*dev
)
557 struct macsec_dev
*macsec
= netdev_priv(dev
);
559 skb
->dev
= macsec
->real_dev
;
560 skb_reset_mac_header(skb
);
561 skb
->protocol
= eth_hdr(skb
)->h_proto
;
564 static void macsec_count_tx(struct sk_buff
*skb
, struct macsec_tx_sc
*tx_sc
,
565 struct macsec_tx_sa
*tx_sa
)
567 struct pcpu_tx_sc_stats
*txsc_stats
= this_cpu_ptr(tx_sc
->stats
);
569 u64_stats_update_begin(&txsc_stats
->syncp
);
570 if (tx_sc
->encrypt
) {
571 txsc_stats
->stats
.OutOctetsEncrypted
+= skb
->len
;
572 txsc_stats
->stats
.OutPktsEncrypted
++;
573 this_cpu_inc(tx_sa
->stats
->OutPktsEncrypted
);
575 txsc_stats
->stats
.OutOctetsProtected
+= skb
->len
;
576 txsc_stats
->stats
.OutPktsProtected
++;
577 this_cpu_inc(tx_sa
->stats
->OutPktsProtected
);
579 u64_stats_update_end(&txsc_stats
->syncp
);
582 static void count_tx(struct net_device
*dev
, int ret
, int len
)
584 if (likely(ret
== NET_XMIT_SUCCESS
|| ret
== NET_XMIT_CN
)) {
585 struct pcpu_sw_netstats
*stats
= this_cpu_ptr(dev
->tstats
);
587 u64_stats_update_begin(&stats
->syncp
);
589 stats
->tx_bytes
+= len
;
590 u64_stats_update_end(&stats
->syncp
);
592 dev
->stats
.tx_dropped
++;
596 static void macsec_encrypt_done(struct crypto_async_request
*base
, int err
)
598 struct sk_buff
*skb
= base
->data
;
599 struct net_device
*dev
= skb
->dev
;
600 struct macsec_dev
*macsec
= macsec_priv(dev
);
601 struct macsec_tx_sa
*sa
= macsec_skb_cb(skb
)->tx_sa
;
604 aead_request_free(macsec_skb_cb(skb
)->req
);
607 macsec_encrypt_finish(skb
, dev
);
608 macsec_count_tx(skb
, &macsec
->secy
.tx_sc
, macsec_skb_cb(skb
)->tx_sa
);
610 ret
= dev_queue_xmit(skb
);
611 count_tx(dev
, ret
, len
);
612 rcu_read_unlock_bh();
618 static struct aead_request
*macsec_alloc_req(struct crypto_aead
*tfm
,
620 struct scatterlist
**sg
)
622 size_t size
, iv_offset
, sg_offset
;
623 struct aead_request
*req
;
626 size
= sizeof(struct aead_request
) + crypto_aead_reqsize(tfm
);
628 size
+= GCM_AES_IV_LEN
;
630 size
= ALIGN(size
, __alignof__(struct scatterlist
));
632 size
+= sizeof(struct scatterlist
) * (MAX_SKB_FRAGS
+ 1);
634 tmp
= kmalloc(size
, GFP_ATOMIC
);
638 *iv
= (unsigned char *)(tmp
+ iv_offset
);
639 *sg
= (struct scatterlist
*)(tmp
+ sg_offset
);
642 aead_request_set_tfm(req
, tfm
);
647 static struct sk_buff
*macsec_encrypt(struct sk_buff
*skb
,
648 struct net_device
*dev
)
651 struct scatterlist
*sg
;
654 struct macsec_eth_header
*hh
;
655 size_t unprotected_len
;
656 struct aead_request
*req
;
657 struct macsec_secy
*secy
;
658 struct macsec_tx_sc
*tx_sc
;
659 struct macsec_tx_sa
*tx_sa
;
660 struct macsec_dev
*macsec
= macsec_priv(dev
);
664 secy
= &macsec
->secy
;
665 tx_sc
= &secy
->tx_sc
;
667 /* 10.5.1 TX SA assignment */
668 tx_sa
= macsec_txsa_get(tx_sc
->sa
[tx_sc
->encoding_sa
]);
670 secy
->operational
= false;
672 return ERR_PTR(-EINVAL
);
675 if (unlikely(skb_headroom(skb
) < MACSEC_NEEDED_HEADROOM
||
676 skb_tailroom(skb
) < MACSEC_NEEDED_TAILROOM
)) {
677 struct sk_buff
*nskb
= skb_copy_expand(skb
,
678 MACSEC_NEEDED_HEADROOM
,
679 MACSEC_NEEDED_TAILROOM
,
685 macsec_txsa_put(tx_sa
);
687 return ERR_PTR(-ENOMEM
);
690 skb
= skb_unshare(skb
, GFP_ATOMIC
);
692 macsec_txsa_put(tx_sa
);
693 return ERR_PTR(-ENOMEM
);
697 unprotected_len
= skb
->len
;
699 sci_present
= send_sci(secy
);
700 hh
= (struct macsec_eth_header
*)skb_push(skb
, macsec_extra_len(sci_present
));
701 memmove(hh
, eth
, 2 * ETH_ALEN
);
703 pn
= tx_sa_update_pn(tx_sa
, secy
);
705 macsec_txsa_put(tx_sa
);
707 return ERR_PTR(-ENOLINK
);
709 macsec_fill_sectag(hh
, secy
, pn
, sci_present
);
710 macsec_set_shortlen(hh
, unprotected_len
- 2 * ETH_ALEN
);
712 skb_put(skb
, secy
->icv_len
);
714 if (skb
->len
- ETH_HLEN
> macsec_priv(dev
)->real_dev
->mtu
) {
715 struct pcpu_secy_stats
*secy_stats
= this_cpu_ptr(macsec
->stats
);
717 u64_stats_update_begin(&secy_stats
->syncp
);
718 secy_stats
->stats
.OutPktsTooLong
++;
719 u64_stats_update_end(&secy_stats
->syncp
);
721 macsec_txsa_put(tx_sa
);
723 return ERR_PTR(-EINVAL
);
726 req
= macsec_alloc_req(tx_sa
->key
.tfm
, &iv
, &sg
);
728 macsec_txsa_put(tx_sa
);
730 return ERR_PTR(-ENOMEM
);
733 macsec_fill_iv(iv
, secy
->sci
, pn
);
735 sg_init_table(sg
, MAX_SKB_FRAGS
+ 1);
736 skb_to_sgvec(skb
, sg
, 0, skb
->len
);
738 if (tx_sc
->encrypt
) {
739 int len
= skb
->len
- macsec_hdr_len(sci_present
) -
741 aead_request_set_crypt(req
, sg
, sg
, len
, iv
);
742 aead_request_set_ad(req
, macsec_hdr_len(sci_present
));
744 aead_request_set_crypt(req
, sg
, sg
, 0, iv
);
745 aead_request_set_ad(req
, skb
->len
- secy
->icv_len
);
748 macsec_skb_cb(skb
)->req
= req
;
749 macsec_skb_cb(skb
)->tx_sa
= tx_sa
;
750 aead_request_set_callback(req
, 0, macsec_encrypt_done
, skb
);
753 ret
= crypto_aead_encrypt(req
);
754 if (ret
== -EINPROGRESS
) {
756 } else if (ret
!= 0) {
759 aead_request_free(req
);
760 macsec_txsa_put(tx_sa
);
761 return ERR_PTR(-EINVAL
);
765 aead_request_free(req
);
766 macsec_txsa_put(tx_sa
);
771 static bool macsec_post_decrypt(struct sk_buff
*skb
, struct macsec_secy
*secy
, u32 pn
)
773 struct macsec_rx_sa
*rx_sa
= macsec_skb_cb(skb
)->rx_sa
;
774 struct pcpu_rx_sc_stats
*rxsc_stats
= this_cpu_ptr(rx_sa
->sc
->stats
);
775 struct macsec_eth_header
*hdr
= macsec_ethhdr(skb
);
778 spin_lock(&rx_sa
->lock
);
779 if (rx_sa
->next_pn
>= secy
->replay_window
)
780 lowest_pn
= rx_sa
->next_pn
- secy
->replay_window
;
782 /* Now perform replay protection check again
783 * (see IEEE 802.1AE-2006 figure 10-5)
785 if (secy
->replay_protect
&& pn
< lowest_pn
) {
786 spin_unlock(&rx_sa
->lock
);
787 u64_stats_update_begin(&rxsc_stats
->syncp
);
788 rxsc_stats
->stats
.InPktsLate
++;
789 u64_stats_update_end(&rxsc_stats
->syncp
);
793 if (secy
->validate_frames
!= MACSEC_VALIDATE_DISABLED
) {
794 u64_stats_update_begin(&rxsc_stats
->syncp
);
795 if (hdr
->tci_an
& MACSEC_TCI_E
)
796 rxsc_stats
->stats
.InOctetsDecrypted
+= skb
->len
;
798 rxsc_stats
->stats
.InOctetsValidated
+= skb
->len
;
799 u64_stats_update_end(&rxsc_stats
->syncp
);
802 if (!macsec_skb_cb(skb
)->valid
) {
803 spin_unlock(&rx_sa
->lock
);
806 if (hdr
->tci_an
& MACSEC_TCI_C
||
807 secy
->validate_frames
== MACSEC_VALIDATE_STRICT
) {
808 u64_stats_update_begin(&rxsc_stats
->syncp
);
809 rxsc_stats
->stats
.InPktsNotValid
++;
810 u64_stats_update_end(&rxsc_stats
->syncp
);
814 u64_stats_update_begin(&rxsc_stats
->syncp
);
815 if (secy
->validate_frames
== MACSEC_VALIDATE_CHECK
) {
816 rxsc_stats
->stats
.InPktsInvalid
++;
817 this_cpu_inc(rx_sa
->stats
->InPktsInvalid
);
818 } else if (pn
< lowest_pn
) {
819 rxsc_stats
->stats
.InPktsDelayed
++;
821 rxsc_stats
->stats
.InPktsUnchecked
++;
823 u64_stats_update_end(&rxsc_stats
->syncp
);
825 u64_stats_update_begin(&rxsc_stats
->syncp
);
826 if (pn
< lowest_pn
) {
827 rxsc_stats
->stats
.InPktsDelayed
++;
829 rxsc_stats
->stats
.InPktsOK
++;
830 this_cpu_inc(rx_sa
->stats
->InPktsOK
);
832 u64_stats_update_end(&rxsc_stats
->syncp
);
834 if (pn
>= rx_sa
->next_pn
)
835 rx_sa
->next_pn
= pn
+ 1;
836 spin_unlock(&rx_sa
->lock
);
842 static void macsec_reset_skb(struct sk_buff
*skb
, struct net_device
*dev
)
844 skb
->pkt_type
= PACKET_HOST
;
845 skb
->protocol
= eth_type_trans(skb
, dev
);
847 skb_reset_network_header(skb
);
848 if (!skb_transport_header_was_set(skb
))
849 skb_reset_transport_header(skb
);
850 skb_reset_mac_len(skb
);
853 static void macsec_finalize_skb(struct sk_buff
*skb
, u8 icv_len
, u8 hdr_len
)
855 memmove(skb
->data
+ hdr_len
, skb
->data
, 2 * ETH_ALEN
);
856 skb_pull(skb
, hdr_len
);
857 pskb_trim_unique(skb
, skb
->len
- icv_len
);
860 static void count_rx(struct net_device
*dev
, int len
)
862 struct pcpu_sw_netstats
*stats
= this_cpu_ptr(dev
->tstats
);
864 u64_stats_update_begin(&stats
->syncp
);
866 stats
->rx_bytes
+= len
;
867 u64_stats_update_end(&stats
->syncp
);
870 static void macsec_decrypt_done(struct crypto_async_request
*base
, int err
)
872 struct sk_buff
*skb
= base
->data
;
873 struct net_device
*dev
= skb
->dev
;
874 struct macsec_dev
*macsec
= macsec_priv(dev
);
875 struct macsec_rx_sa
*rx_sa
= macsec_skb_cb(skb
)->rx_sa
;
876 struct macsec_rx_sc
*rx_sc
= rx_sa
->sc
;
880 aead_request_free(macsec_skb_cb(skb
)->req
);
883 macsec_skb_cb(skb
)->valid
= true;
886 pn
= ntohl(macsec_ethhdr(skb
)->packet_number
);
887 if (!macsec_post_decrypt(skb
, &macsec
->secy
, pn
)) {
888 rcu_read_unlock_bh();
893 macsec_finalize_skb(skb
, macsec
->secy
.icv_len
,
894 macsec_extra_len(macsec_skb_cb(skb
)->has_sci
));
895 macsec_reset_skb(skb
, macsec
->secy
.netdev
);
898 ret
= gro_cells_receive(&macsec
->gro_cells
, skb
);
899 if (ret
== NET_RX_SUCCESS
)
902 macsec
->secy
.netdev
->stats
.rx_dropped
++;
904 rcu_read_unlock_bh();
907 macsec_rxsa_put(rx_sa
);
908 macsec_rxsc_put(rx_sc
);
912 static struct sk_buff
*macsec_decrypt(struct sk_buff
*skb
,
913 struct net_device
*dev
,
914 struct macsec_rx_sa
*rx_sa
,
916 struct macsec_secy
*secy
)
919 struct scatterlist
*sg
;
921 struct aead_request
*req
;
922 struct macsec_eth_header
*hdr
;
923 u16 icv_len
= secy
->icv_len
;
925 macsec_skb_cb(skb
)->valid
= false;
926 skb
= skb_share_check(skb
, GFP_ATOMIC
);
928 return ERR_PTR(-ENOMEM
);
930 req
= macsec_alloc_req(rx_sa
->key
.tfm
, &iv
, &sg
);
933 return ERR_PTR(-ENOMEM
);
936 hdr
= (struct macsec_eth_header
*)skb
->data
;
937 macsec_fill_iv(iv
, sci
, ntohl(hdr
->packet_number
));
939 sg_init_table(sg
, MAX_SKB_FRAGS
+ 1);
940 skb_to_sgvec(skb
, sg
, 0, skb
->len
);
942 if (hdr
->tci_an
& MACSEC_TCI_E
) {
943 /* confidentiality: ethernet + macsec header
944 * authenticated, encrypted payload
946 int len
= skb
->len
- macsec_hdr_len(macsec_skb_cb(skb
)->has_sci
);
948 aead_request_set_crypt(req
, sg
, sg
, len
, iv
);
949 aead_request_set_ad(req
, macsec_hdr_len(macsec_skb_cb(skb
)->has_sci
));
950 skb
= skb_unshare(skb
, GFP_ATOMIC
);
952 aead_request_free(req
);
953 return ERR_PTR(-ENOMEM
);
956 /* integrity only: all headers + data authenticated */
957 aead_request_set_crypt(req
, sg
, sg
, icv_len
, iv
);
958 aead_request_set_ad(req
, skb
->len
- icv_len
);
961 macsec_skb_cb(skb
)->req
= req
;
963 aead_request_set_callback(req
, 0, macsec_decrypt_done
, skb
);
966 ret
= crypto_aead_decrypt(req
);
967 if (ret
== -EINPROGRESS
) {
969 } else if (ret
!= 0) {
970 /* decryption/authentication failed
971 * 10.6 if validateFrames is disabled, deliver anyway
973 if (ret
!= -EBADMSG
) {
978 macsec_skb_cb(skb
)->valid
= true;
982 aead_request_free(req
);
987 static struct macsec_rx_sc
*find_rx_sc(struct macsec_secy
*secy
, sci_t sci
)
989 struct macsec_rx_sc
*rx_sc
;
991 for_each_rxsc(secy
, rx_sc
) {
992 if (rx_sc
->sci
== sci
)
999 static struct macsec_rx_sc
*find_rx_sc_rtnl(struct macsec_secy
*secy
, sci_t sci
)
1001 struct macsec_rx_sc
*rx_sc
;
1003 for_each_rxsc_rtnl(secy
, rx_sc
) {
1004 if (rx_sc
->sci
== sci
)
1011 static void handle_not_macsec(struct sk_buff
*skb
)
1013 struct macsec_rxh_data
*rxd
;
1014 struct macsec_dev
*macsec
;
1017 rxd
= macsec_data_rcu(skb
->dev
);
1019 /* 10.6 If the management control validateFrames is not
1020 * Strict, frames without a SecTAG are received, counted, and
1021 * delivered to the Controlled Port
1023 list_for_each_entry_rcu(macsec
, &rxd
->secys
, secys
) {
1024 struct sk_buff
*nskb
;
1026 struct pcpu_secy_stats
*secy_stats
= this_cpu_ptr(macsec
->stats
);
1028 if (macsec
->secy
.validate_frames
== MACSEC_VALIDATE_STRICT
) {
1029 u64_stats_update_begin(&secy_stats
->syncp
);
1030 secy_stats
->stats
.InPktsNoTag
++;
1031 u64_stats_update_end(&secy_stats
->syncp
);
1035 /* deliver on this port */
1036 nskb
= skb_clone(skb
, GFP_ATOMIC
);
1040 nskb
->dev
= macsec
->secy
.netdev
;
1042 ret
= netif_rx(nskb
);
1043 if (ret
== NET_RX_SUCCESS
) {
1044 u64_stats_update_begin(&secy_stats
->syncp
);
1045 secy_stats
->stats
.InPktsUntagged
++;
1046 u64_stats_update_end(&secy_stats
->syncp
);
1048 macsec
->secy
.netdev
->stats
.rx_dropped
++;
1055 static rx_handler_result_t
macsec_handle_frame(struct sk_buff
**pskb
)
1057 struct sk_buff
*skb
= *pskb
;
1058 struct net_device
*dev
= skb
->dev
;
1059 struct macsec_eth_header
*hdr
;
1060 struct macsec_secy
*secy
= NULL
;
1061 struct macsec_rx_sc
*rx_sc
;
1062 struct macsec_rx_sa
*rx_sa
;
1063 struct macsec_rxh_data
*rxd
;
1064 struct macsec_dev
*macsec
;
1068 struct pcpu_rx_sc_stats
*rxsc_stats
;
1069 struct pcpu_secy_stats
*secy_stats
;
1073 if (skb_headroom(skb
) < ETH_HLEN
)
1076 hdr
= macsec_ethhdr(skb
);
1077 if (hdr
->eth
.h_proto
!= htons(ETH_P_MACSEC
)) {
1078 handle_not_macsec(skb
);
1080 /* and deliver to the uncontrolled port */
1081 return RX_HANDLER_PASS
;
1084 skb
= skb_unshare(skb
, GFP_ATOMIC
);
1087 return RX_HANDLER_CONSUMED
;
1090 pulled_sci
= pskb_may_pull(skb
, macsec_extra_len(true));
1092 if (!pskb_may_pull(skb
, macsec_extra_len(false)))
1096 hdr
= macsec_ethhdr(skb
);
1098 /* Frames with a SecTAG that has the TCI E bit set but the C
1099 * bit clear are discarded, as this reserved encoding is used
1100 * to identify frames with a SecTAG that are not to be
1101 * delivered to the Controlled Port.
1103 if ((hdr
->tci_an
& (MACSEC_TCI_C
| MACSEC_TCI_E
)) == MACSEC_TCI_E
)
1104 return RX_HANDLER_PASS
;
1106 /* now, pull the extra length */
1107 if (hdr
->tci_an
& MACSEC_TCI_SC
) {
1112 /* ethernet header is part of crypto processing */
1113 skb_push(skb
, ETH_HLEN
);
1115 macsec_skb_cb(skb
)->has_sci
= !!(hdr
->tci_an
& MACSEC_TCI_SC
);
1116 macsec_skb_cb(skb
)->assoc_num
= hdr
->tci_an
& MACSEC_AN_MASK
;
1117 sci
= macsec_frame_sci(hdr
, macsec_skb_cb(skb
)->has_sci
);
1120 rxd
= macsec_data_rcu(skb
->dev
);
1122 list_for_each_entry_rcu(macsec
, &rxd
->secys
, secys
) {
1123 struct macsec_rx_sc
*sc
= find_rx_sc(&macsec
->secy
, sci
);
1124 sc
= sc
? macsec_rxsc_get(sc
) : NULL
;
1127 secy
= &macsec
->secy
;
1137 macsec
= macsec_priv(dev
);
1138 secy_stats
= this_cpu_ptr(macsec
->stats
);
1139 rxsc_stats
= this_cpu_ptr(rx_sc
->stats
);
1141 if (!macsec_validate_skb(skb
, secy
->icv_len
)) {
1142 u64_stats_update_begin(&secy_stats
->syncp
);
1143 secy_stats
->stats
.InPktsBadTag
++;
1144 u64_stats_update_end(&secy_stats
->syncp
);
1148 rx_sa
= macsec_rxsa_get(rx_sc
->sa
[macsec_skb_cb(skb
)->assoc_num
]);
1150 /* 10.6.1 if the SA is not in use */
1152 /* If validateFrames is Strict or the C bit in the
1153 * SecTAG is set, discard
1155 if (hdr
->tci_an
& MACSEC_TCI_C
||
1156 secy
->validate_frames
== MACSEC_VALIDATE_STRICT
) {
1157 u64_stats_update_begin(&rxsc_stats
->syncp
);
1158 rxsc_stats
->stats
.InPktsNotUsingSA
++;
1159 u64_stats_update_end(&rxsc_stats
->syncp
);
1163 /* not Strict, the frame (with the SecTAG and ICV
1164 * removed) is delivered to the Controlled Port.
1166 u64_stats_update_begin(&rxsc_stats
->syncp
);
1167 rxsc_stats
->stats
.InPktsUnusedSA
++;
1168 u64_stats_update_end(&rxsc_stats
->syncp
);
1172 /* First, PN check to avoid decrypting obviously wrong packets */
1173 pn
= ntohl(hdr
->packet_number
);
1174 if (secy
->replay_protect
) {
1177 spin_lock(&rx_sa
->lock
);
1178 late
= rx_sa
->next_pn
>= secy
->replay_window
&&
1179 pn
< (rx_sa
->next_pn
- secy
->replay_window
);
1180 spin_unlock(&rx_sa
->lock
);
1183 u64_stats_update_begin(&rxsc_stats
->syncp
);
1184 rxsc_stats
->stats
.InPktsLate
++;
1185 u64_stats_update_end(&rxsc_stats
->syncp
);
1190 macsec_skb_cb(skb
)->rx_sa
= rx_sa
;
1192 /* Disabled && !changed text => skip validation */
1193 if (hdr
->tci_an
& MACSEC_TCI_C
||
1194 secy
->validate_frames
!= MACSEC_VALIDATE_DISABLED
)
1195 skb
= macsec_decrypt(skb
, dev
, rx_sa
, sci
, secy
);
1198 /* the decrypt callback needs the reference */
1199 if (PTR_ERR(skb
) != -EINPROGRESS
) {
1200 macsec_rxsa_put(rx_sa
);
1201 macsec_rxsc_put(rx_sc
);
1205 return RX_HANDLER_CONSUMED
;
1208 if (!macsec_post_decrypt(skb
, secy
, pn
))
1212 macsec_finalize_skb(skb
, secy
->icv_len
,
1213 macsec_extra_len(macsec_skb_cb(skb
)->has_sci
));
1214 macsec_reset_skb(skb
, secy
->netdev
);
1217 macsec_rxsa_put(rx_sa
);
1218 macsec_rxsc_put(rx_sc
);
1220 ret
= gro_cells_receive(&macsec
->gro_cells
, skb
);
1221 if (ret
== NET_RX_SUCCESS
)
1222 count_rx(dev
, skb
->len
);
1224 macsec
->secy
.netdev
->stats
.rx_dropped
++;
1229 return RX_HANDLER_CONSUMED
;
1232 macsec_rxsa_put(rx_sa
);
1234 macsec_rxsc_put(rx_sc
);
1239 return RX_HANDLER_CONSUMED
;
1242 /* 10.6.1 if the SC is not found */
1243 cbit
= !!(hdr
->tci_an
& MACSEC_TCI_C
);
1245 macsec_finalize_skb(skb
, DEFAULT_ICV_LEN
,
1246 macsec_extra_len(macsec_skb_cb(skb
)->has_sci
));
1248 list_for_each_entry_rcu(macsec
, &rxd
->secys
, secys
) {
1249 struct sk_buff
*nskb
;
1251 secy_stats
= this_cpu_ptr(macsec
->stats
);
1253 /* If validateFrames is Strict or the C bit in the
1254 * SecTAG is set, discard
1257 macsec
->secy
.validate_frames
== MACSEC_VALIDATE_STRICT
) {
1258 u64_stats_update_begin(&secy_stats
->syncp
);
1259 secy_stats
->stats
.InPktsNoSCI
++;
1260 u64_stats_update_end(&secy_stats
->syncp
);
1264 /* not strict, the frame (with the SecTAG and ICV
1265 * removed) is delivered to the Controlled Port.
1267 nskb
= skb_clone(skb
, GFP_ATOMIC
);
1271 macsec_reset_skb(nskb
, macsec
->secy
.netdev
);
1273 ret
= netif_rx(nskb
);
1274 if (ret
== NET_RX_SUCCESS
) {
1275 u64_stats_update_begin(&secy_stats
->syncp
);
1276 secy_stats
->stats
.InPktsUnknownSCI
++;
1277 u64_stats_update_end(&secy_stats
->syncp
);
1279 macsec
->secy
.netdev
->stats
.rx_dropped
++;
1285 return RX_HANDLER_PASS
;
1288 static struct crypto_aead
*macsec_alloc_tfm(char *key
, int key_len
, int icv_len
)
1290 struct crypto_aead
*tfm
;
1293 tfm
= crypto_alloc_aead("gcm(aes)", 0, 0);
1298 ret
= crypto_aead_setkey(tfm
, key
, key_len
);
1302 ret
= crypto_aead_setauthsize(tfm
, icv_len
);
1308 crypto_free_aead(tfm
);
1309 return ERR_PTR(ret
);
1312 static int init_rx_sa(struct macsec_rx_sa
*rx_sa
, char *sak
, int key_len
,
1315 rx_sa
->stats
= alloc_percpu(struct macsec_rx_sa_stats
);
1319 rx_sa
->key
.tfm
= macsec_alloc_tfm(sak
, key_len
, icv_len
);
1320 if (IS_ERR(rx_sa
->key
.tfm
)) {
1321 free_percpu(rx_sa
->stats
);
1322 return PTR_ERR(rx_sa
->key
.tfm
);
1325 rx_sa
->active
= false;
1327 atomic_set(&rx_sa
->refcnt
, 1);
1328 spin_lock_init(&rx_sa
->lock
);
1333 static void clear_rx_sa(struct macsec_rx_sa
*rx_sa
)
1335 rx_sa
->active
= false;
1337 macsec_rxsa_put(rx_sa
);
1340 static void free_rx_sc(struct macsec_rx_sc
*rx_sc
)
1344 for (i
= 0; i
< MACSEC_NUM_AN
; i
++) {
1345 struct macsec_rx_sa
*sa
= rtnl_dereference(rx_sc
->sa
[i
]);
1347 RCU_INIT_POINTER(rx_sc
->sa
[i
], NULL
);
1352 macsec_rxsc_put(rx_sc
);
1355 static struct macsec_rx_sc
*del_rx_sc(struct macsec_secy
*secy
, sci_t sci
)
1357 struct macsec_rx_sc
*rx_sc
, __rcu
**rx_scp
;
1359 for (rx_scp
= &secy
->rx_sc
, rx_sc
= rtnl_dereference(*rx_scp
);
1361 rx_scp
= &rx_sc
->next
, rx_sc
= rtnl_dereference(*rx_scp
)) {
1362 if (rx_sc
->sci
== sci
) {
1365 rcu_assign_pointer(*rx_scp
, rx_sc
->next
);
1373 static struct macsec_rx_sc
*create_rx_sc(struct net_device
*dev
, sci_t sci
)
1375 struct macsec_rx_sc
*rx_sc
;
1376 struct macsec_dev
*macsec
;
1377 struct net_device
*real_dev
= macsec_priv(dev
)->real_dev
;
1378 struct macsec_rxh_data
*rxd
= macsec_data_rtnl(real_dev
);
1379 struct macsec_secy
*secy
;
1381 list_for_each_entry(macsec
, &rxd
->secys
, secys
) {
1382 if (find_rx_sc_rtnl(&macsec
->secy
, sci
))
1383 return ERR_PTR(-EEXIST
);
1386 rx_sc
= kzalloc(sizeof(*rx_sc
), GFP_KERNEL
);
1388 return ERR_PTR(-ENOMEM
);
1390 rx_sc
->stats
= netdev_alloc_pcpu_stats(struct pcpu_rx_sc_stats
);
1391 if (!rx_sc
->stats
) {
1393 return ERR_PTR(-ENOMEM
);
1397 rx_sc
->active
= true;
1398 atomic_set(&rx_sc
->refcnt
, 1);
1400 secy
= &macsec_priv(dev
)->secy
;
1401 rcu_assign_pointer(rx_sc
->next
, secy
->rx_sc
);
1402 rcu_assign_pointer(secy
->rx_sc
, rx_sc
);
1410 static int init_tx_sa(struct macsec_tx_sa
*tx_sa
, char *sak
, int key_len
,
1413 tx_sa
->stats
= alloc_percpu(struct macsec_tx_sa_stats
);
1417 tx_sa
->key
.tfm
= macsec_alloc_tfm(sak
, key_len
, icv_len
);
1418 if (IS_ERR(tx_sa
->key
.tfm
)) {
1419 free_percpu(tx_sa
->stats
);
1420 return PTR_ERR(tx_sa
->key
.tfm
);
1423 tx_sa
->active
= false;
1424 atomic_set(&tx_sa
->refcnt
, 1);
1425 spin_lock_init(&tx_sa
->lock
);
1430 static void clear_tx_sa(struct macsec_tx_sa
*tx_sa
)
1432 tx_sa
->active
= false;
1434 macsec_txsa_put(tx_sa
);
1437 static struct genl_family macsec_fam
;
1439 static struct net_device
*get_dev_from_nl(struct net
*net
,
1440 struct nlattr
**attrs
)
1442 int ifindex
= nla_get_u32(attrs
[MACSEC_ATTR_IFINDEX
]);
1443 struct net_device
*dev
;
1445 dev
= __dev_get_by_index(net
, ifindex
);
1447 return ERR_PTR(-ENODEV
);
1449 if (!netif_is_macsec(dev
))
1450 return ERR_PTR(-ENODEV
);
1455 static sci_t
nla_get_sci(const struct nlattr
*nla
)
1457 return (__force sci_t
)nla_get_u64(nla
);
1460 static int nla_put_sci(struct sk_buff
*skb
, int attrtype
, sci_t value
,
1463 return nla_put_u64_64bit(skb
, attrtype
, (__force u64
)value
, padattr
);
1466 static struct macsec_tx_sa
*get_txsa_from_nl(struct net
*net
,
1467 struct nlattr
**attrs
,
1468 struct nlattr
**tb_sa
,
1469 struct net_device
**devp
,
1470 struct macsec_secy
**secyp
,
1471 struct macsec_tx_sc
**scp
,
1474 struct net_device
*dev
;
1475 struct macsec_secy
*secy
;
1476 struct macsec_tx_sc
*tx_sc
;
1477 struct macsec_tx_sa
*tx_sa
;
1479 if (!tb_sa
[MACSEC_SA_ATTR_AN
])
1480 return ERR_PTR(-EINVAL
);
1482 *assoc_num
= nla_get_u8(tb_sa
[MACSEC_SA_ATTR_AN
]);
1484 dev
= get_dev_from_nl(net
, attrs
);
1486 return ERR_CAST(dev
);
1488 if (*assoc_num
>= MACSEC_NUM_AN
)
1489 return ERR_PTR(-EINVAL
);
1491 secy
= &macsec_priv(dev
)->secy
;
1492 tx_sc
= &secy
->tx_sc
;
1494 tx_sa
= rtnl_dereference(tx_sc
->sa
[*assoc_num
]);
1496 return ERR_PTR(-ENODEV
);
1504 static struct macsec_rx_sc
*get_rxsc_from_nl(struct net
*net
,
1505 struct nlattr
**attrs
,
1506 struct nlattr
**tb_rxsc
,
1507 struct net_device
**devp
,
1508 struct macsec_secy
**secyp
)
1510 struct net_device
*dev
;
1511 struct macsec_secy
*secy
;
1512 struct macsec_rx_sc
*rx_sc
;
1515 dev
= get_dev_from_nl(net
, attrs
);
1517 return ERR_CAST(dev
);
1519 secy
= &macsec_priv(dev
)->secy
;
1521 if (!tb_rxsc
[MACSEC_RXSC_ATTR_SCI
])
1522 return ERR_PTR(-EINVAL
);
1524 sci
= nla_get_sci(tb_rxsc
[MACSEC_RXSC_ATTR_SCI
]);
1525 rx_sc
= find_rx_sc_rtnl(secy
, sci
);
1527 return ERR_PTR(-ENODEV
);
1535 static struct macsec_rx_sa
*get_rxsa_from_nl(struct net
*net
,
1536 struct nlattr
**attrs
,
1537 struct nlattr
**tb_rxsc
,
1538 struct nlattr
**tb_sa
,
1539 struct net_device
**devp
,
1540 struct macsec_secy
**secyp
,
1541 struct macsec_rx_sc
**scp
,
1544 struct macsec_rx_sc
*rx_sc
;
1545 struct macsec_rx_sa
*rx_sa
;
1547 if (!tb_sa
[MACSEC_SA_ATTR_AN
])
1548 return ERR_PTR(-EINVAL
);
1550 *assoc_num
= nla_get_u8(tb_sa
[MACSEC_SA_ATTR_AN
]);
1551 if (*assoc_num
>= MACSEC_NUM_AN
)
1552 return ERR_PTR(-EINVAL
);
1554 rx_sc
= get_rxsc_from_nl(net
, attrs
, tb_rxsc
, devp
, secyp
);
1556 return ERR_CAST(rx_sc
);
1558 rx_sa
= rtnl_dereference(rx_sc
->sa
[*assoc_num
]);
1560 return ERR_PTR(-ENODEV
);
1567 static const struct nla_policy macsec_genl_policy
[NUM_MACSEC_ATTR
] = {
1568 [MACSEC_ATTR_IFINDEX
] = { .type
= NLA_U32
},
1569 [MACSEC_ATTR_RXSC_CONFIG
] = { .type
= NLA_NESTED
},
1570 [MACSEC_ATTR_SA_CONFIG
] = { .type
= NLA_NESTED
},
1573 static const struct nla_policy macsec_genl_rxsc_policy
[NUM_MACSEC_RXSC_ATTR
] = {
1574 [MACSEC_RXSC_ATTR_SCI
] = { .type
= NLA_U64
},
1575 [MACSEC_RXSC_ATTR_ACTIVE
] = { .type
= NLA_U8
},
1578 static const struct nla_policy macsec_genl_sa_policy
[NUM_MACSEC_SA_ATTR
] = {
1579 [MACSEC_SA_ATTR_AN
] = { .type
= NLA_U8
},
1580 [MACSEC_SA_ATTR_ACTIVE
] = { .type
= NLA_U8
},
1581 [MACSEC_SA_ATTR_PN
] = { .type
= NLA_U32
},
1582 [MACSEC_SA_ATTR_KEYID
] = { .type
= NLA_BINARY
,
1583 .len
= MACSEC_KEYID_LEN
, },
1584 [MACSEC_SA_ATTR_KEY
] = { .type
= NLA_BINARY
,
1585 .len
= MACSEC_MAX_KEY_LEN
, },
1588 static int parse_sa_config(struct nlattr
**attrs
, struct nlattr
**tb_sa
)
1590 if (!attrs
[MACSEC_ATTR_SA_CONFIG
])
1593 if (nla_parse_nested(tb_sa
, MACSEC_SA_ATTR_MAX
, attrs
[MACSEC_ATTR_SA_CONFIG
],
1594 macsec_genl_sa_policy
))
1600 static int parse_rxsc_config(struct nlattr
**attrs
, struct nlattr
**tb_rxsc
)
1602 if (!attrs
[MACSEC_ATTR_RXSC_CONFIG
])
1605 if (nla_parse_nested(tb_rxsc
, MACSEC_RXSC_ATTR_MAX
, attrs
[MACSEC_ATTR_RXSC_CONFIG
],
1606 macsec_genl_rxsc_policy
))
1612 static bool validate_add_rxsa(struct nlattr
**attrs
)
1614 if (!attrs
[MACSEC_SA_ATTR_AN
] ||
1615 !attrs
[MACSEC_SA_ATTR_KEY
] ||
1616 !attrs
[MACSEC_SA_ATTR_KEYID
])
1619 if (nla_get_u8(attrs
[MACSEC_SA_ATTR_AN
]) >= MACSEC_NUM_AN
)
1622 if (attrs
[MACSEC_SA_ATTR_PN
] && nla_get_u32(attrs
[MACSEC_SA_ATTR_PN
]) == 0)
1625 if (attrs
[MACSEC_SA_ATTR_ACTIVE
]) {
1626 if (nla_get_u8(attrs
[MACSEC_SA_ATTR_ACTIVE
]) > 1)
1630 if (nla_len(attrs
[MACSEC_SA_ATTR_KEYID
]) != MACSEC_KEYID_LEN
)
1636 static int macsec_add_rxsa(struct sk_buff
*skb
, struct genl_info
*info
)
1638 struct net_device
*dev
;
1639 struct nlattr
**attrs
= info
->attrs
;
1640 struct macsec_secy
*secy
;
1641 struct macsec_rx_sc
*rx_sc
;
1642 struct macsec_rx_sa
*rx_sa
;
1643 unsigned char assoc_num
;
1644 struct nlattr
*tb_rxsc
[MACSEC_RXSC_ATTR_MAX
+ 1];
1645 struct nlattr
*tb_sa
[MACSEC_SA_ATTR_MAX
+ 1];
1648 if (!attrs
[MACSEC_ATTR_IFINDEX
])
1651 if (parse_sa_config(attrs
, tb_sa
))
1654 if (parse_rxsc_config(attrs
, tb_rxsc
))
1657 if (!validate_add_rxsa(tb_sa
))
1661 rx_sc
= get_rxsc_from_nl(genl_info_net(info
), attrs
, tb_rxsc
, &dev
, &secy
);
1662 if (IS_ERR(rx_sc
)) {
1664 return PTR_ERR(rx_sc
);
1667 assoc_num
= nla_get_u8(tb_sa
[MACSEC_SA_ATTR_AN
]);
1669 if (nla_len(tb_sa
[MACSEC_SA_ATTR_KEY
]) != secy
->key_len
) {
1670 pr_notice("macsec: nl: add_rxsa: bad key length: %d != %d\n",
1671 nla_len(tb_sa
[MACSEC_SA_ATTR_KEY
]), secy
->key_len
);
1676 rx_sa
= rtnl_dereference(rx_sc
->sa
[assoc_num
]);
1682 rx_sa
= kmalloc(sizeof(*rx_sa
), GFP_KERNEL
);
1688 err
= init_rx_sa(rx_sa
, nla_data(tb_sa
[MACSEC_SA_ATTR_KEY
]),
1689 secy
->key_len
, secy
->icv_len
);
1696 if (tb_sa
[MACSEC_SA_ATTR_PN
]) {
1697 spin_lock_bh(&rx_sa
->lock
);
1698 rx_sa
->next_pn
= nla_get_u32(tb_sa
[MACSEC_SA_ATTR_PN
]);
1699 spin_unlock_bh(&rx_sa
->lock
);
1702 if (tb_sa
[MACSEC_SA_ATTR_ACTIVE
])
1703 rx_sa
->active
= !!nla_get_u8(tb_sa
[MACSEC_SA_ATTR_ACTIVE
]);
1705 nla_memcpy(rx_sa
->key
.id
, tb_sa
[MACSEC_SA_ATTR_KEYID
], MACSEC_KEYID_LEN
);
1707 rcu_assign_pointer(rx_sc
->sa
[assoc_num
], rx_sa
);
1714 static bool validate_add_rxsc(struct nlattr
**attrs
)
1716 if (!attrs
[MACSEC_RXSC_ATTR_SCI
])
1719 if (attrs
[MACSEC_RXSC_ATTR_ACTIVE
]) {
1720 if (nla_get_u8(attrs
[MACSEC_RXSC_ATTR_ACTIVE
]) > 1)
1727 static int macsec_add_rxsc(struct sk_buff
*skb
, struct genl_info
*info
)
1729 struct net_device
*dev
;
1730 sci_t sci
= MACSEC_UNDEF_SCI
;
1731 struct nlattr
**attrs
= info
->attrs
;
1732 struct macsec_rx_sc
*rx_sc
;
1733 struct nlattr
*tb_rxsc
[MACSEC_RXSC_ATTR_MAX
+ 1];
1735 if (!attrs
[MACSEC_ATTR_IFINDEX
])
1738 if (parse_rxsc_config(attrs
, tb_rxsc
))
1741 if (!validate_add_rxsc(tb_rxsc
))
1745 dev
= get_dev_from_nl(genl_info_net(info
), attrs
);
1748 return PTR_ERR(dev
);
1751 sci
= nla_get_sci(tb_rxsc
[MACSEC_RXSC_ATTR_SCI
]);
1753 rx_sc
= create_rx_sc(dev
, sci
);
1754 if (IS_ERR(rx_sc
)) {
1756 return PTR_ERR(rx_sc
);
1759 if (tb_rxsc
[MACSEC_RXSC_ATTR_ACTIVE
])
1760 rx_sc
->active
= !!nla_get_u8(tb_rxsc
[MACSEC_RXSC_ATTR_ACTIVE
]);
1767 static bool validate_add_txsa(struct nlattr
**attrs
)
1769 if (!attrs
[MACSEC_SA_ATTR_AN
] ||
1770 !attrs
[MACSEC_SA_ATTR_PN
] ||
1771 !attrs
[MACSEC_SA_ATTR_KEY
] ||
1772 !attrs
[MACSEC_SA_ATTR_KEYID
])
1775 if (nla_get_u8(attrs
[MACSEC_SA_ATTR_AN
]) >= MACSEC_NUM_AN
)
1778 if (nla_get_u32(attrs
[MACSEC_SA_ATTR_PN
]) == 0)
1781 if (attrs
[MACSEC_SA_ATTR_ACTIVE
]) {
1782 if (nla_get_u8(attrs
[MACSEC_SA_ATTR_ACTIVE
]) > 1)
1786 if (nla_len(attrs
[MACSEC_SA_ATTR_KEYID
]) != MACSEC_KEYID_LEN
)
1792 static int macsec_add_txsa(struct sk_buff
*skb
, struct genl_info
*info
)
1794 struct net_device
*dev
;
1795 struct nlattr
**attrs
= info
->attrs
;
1796 struct macsec_secy
*secy
;
1797 struct macsec_tx_sc
*tx_sc
;
1798 struct macsec_tx_sa
*tx_sa
;
1799 unsigned char assoc_num
;
1800 struct nlattr
*tb_sa
[MACSEC_SA_ATTR_MAX
+ 1];
1803 if (!attrs
[MACSEC_ATTR_IFINDEX
])
1806 if (parse_sa_config(attrs
, tb_sa
))
1809 if (!validate_add_txsa(tb_sa
))
1813 dev
= get_dev_from_nl(genl_info_net(info
), attrs
);
1816 return PTR_ERR(dev
);
1819 secy
= &macsec_priv(dev
)->secy
;
1820 tx_sc
= &secy
->tx_sc
;
1822 assoc_num
= nla_get_u8(tb_sa
[MACSEC_SA_ATTR_AN
]);
1824 if (nla_len(tb_sa
[MACSEC_SA_ATTR_KEY
]) != secy
->key_len
) {
1825 pr_notice("macsec: nl: add_txsa: bad key length: %d != %d\n",
1826 nla_len(tb_sa
[MACSEC_SA_ATTR_KEY
]), secy
->key_len
);
1831 tx_sa
= rtnl_dereference(tx_sc
->sa
[assoc_num
]);
1837 tx_sa
= kmalloc(sizeof(*tx_sa
), GFP_KERNEL
);
1843 err
= init_tx_sa(tx_sa
, nla_data(tb_sa
[MACSEC_SA_ATTR_KEY
]),
1844 secy
->key_len
, secy
->icv_len
);
1851 nla_memcpy(tx_sa
->key
.id
, tb_sa
[MACSEC_SA_ATTR_KEYID
], MACSEC_KEYID_LEN
);
1853 spin_lock_bh(&tx_sa
->lock
);
1854 tx_sa
->next_pn
= nla_get_u32(tb_sa
[MACSEC_SA_ATTR_PN
]);
1855 spin_unlock_bh(&tx_sa
->lock
);
1857 if (tb_sa
[MACSEC_SA_ATTR_ACTIVE
])
1858 tx_sa
->active
= !!nla_get_u8(tb_sa
[MACSEC_SA_ATTR_ACTIVE
]);
1860 if (assoc_num
== tx_sc
->encoding_sa
&& tx_sa
->active
)
1861 secy
->operational
= true;
1863 rcu_assign_pointer(tx_sc
->sa
[assoc_num
], tx_sa
);
1870 static int macsec_del_rxsa(struct sk_buff
*skb
, struct genl_info
*info
)
1872 struct nlattr
**attrs
= info
->attrs
;
1873 struct net_device
*dev
;
1874 struct macsec_secy
*secy
;
1875 struct macsec_rx_sc
*rx_sc
;
1876 struct macsec_rx_sa
*rx_sa
;
1878 struct nlattr
*tb_rxsc
[MACSEC_RXSC_ATTR_MAX
+ 1];
1879 struct nlattr
*tb_sa
[MACSEC_SA_ATTR_MAX
+ 1];
1881 if (!attrs
[MACSEC_ATTR_IFINDEX
])
1884 if (parse_sa_config(attrs
, tb_sa
))
1887 if (parse_rxsc_config(attrs
, tb_rxsc
))
1891 rx_sa
= get_rxsa_from_nl(genl_info_net(info
), attrs
, tb_rxsc
, tb_sa
,
1892 &dev
, &secy
, &rx_sc
, &assoc_num
);
1893 if (IS_ERR(rx_sa
)) {
1895 return PTR_ERR(rx_sa
);
1898 if (rx_sa
->active
) {
1903 RCU_INIT_POINTER(rx_sc
->sa
[assoc_num
], NULL
);
1911 static int macsec_del_rxsc(struct sk_buff
*skb
, struct genl_info
*info
)
1913 struct nlattr
**attrs
= info
->attrs
;
1914 struct net_device
*dev
;
1915 struct macsec_secy
*secy
;
1916 struct macsec_rx_sc
*rx_sc
;
1918 struct nlattr
*tb_rxsc
[MACSEC_RXSC_ATTR_MAX
+ 1];
1920 if (!attrs
[MACSEC_ATTR_IFINDEX
])
1923 if (parse_rxsc_config(attrs
, tb_rxsc
))
1926 if (!tb_rxsc
[MACSEC_RXSC_ATTR_SCI
])
1930 dev
= get_dev_from_nl(genl_info_net(info
), info
->attrs
);
1933 return PTR_ERR(dev
);
1936 secy
= &macsec_priv(dev
)->secy
;
1937 sci
= nla_get_sci(tb_rxsc
[MACSEC_RXSC_ATTR_SCI
]);
1939 rx_sc
= del_rx_sc(secy
, sci
);
1951 static int macsec_del_txsa(struct sk_buff
*skb
, struct genl_info
*info
)
1953 struct nlattr
**attrs
= info
->attrs
;
1954 struct net_device
*dev
;
1955 struct macsec_secy
*secy
;
1956 struct macsec_tx_sc
*tx_sc
;
1957 struct macsec_tx_sa
*tx_sa
;
1959 struct nlattr
*tb_sa
[MACSEC_SA_ATTR_MAX
+ 1];
1961 if (!attrs
[MACSEC_ATTR_IFINDEX
])
1964 if (parse_sa_config(attrs
, tb_sa
))
1968 tx_sa
= get_txsa_from_nl(genl_info_net(info
), attrs
, tb_sa
,
1969 &dev
, &secy
, &tx_sc
, &assoc_num
);
1970 if (IS_ERR(tx_sa
)) {
1972 return PTR_ERR(tx_sa
);
1975 if (tx_sa
->active
) {
1980 RCU_INIT_POINTER(tx_sc
->sa
[assoc_num
], NULL
);
1988 static bool validate_upd_sa(struct nlattr
**attrs
)
1990 if (!attrs
[MACSEC_SA_ATTR_AN
] ||
1991 attrs
[MACSEC_SA_ATTR_KEY
] ||
1992 attrs
[MACSEC_SA_ATTR_KEYID
])
1995 if (nla_get_u8(attrs
[MACSEC_SA_ATTR_AN
]) >= MACSEC_NUM_AN
)
1998 if (attrs
[MACSEC_SA_ATTR_PN
] && nla_get_u32(attrs
[MACSEC_SA_ATTR_PN
]) == 0)
2001 if (attrs
[MACSEC_SA_ATTR_ACTIVE
]) {
2002 if (nla_get_u8(attrs
[MACSEC_SA_ATTR_ACTIVE
]) > 1)
2009 static int macsec_upd_txsa(struct sk_buff
*skb
, struct genl_info
*info
)
2011 struct nlattr
**attrs
= info
->attrs
;
2012 struct net_device
*dev
;
2013 struct macsec_secy
*secy
;
2014 struct macsec_tx_sc
*tx_sc
;
2015 struct macsec_tx_sa
*tx_sa
;
2017 struct nlattr
*tb_sa
[MACSEC_SA_ATTR_MAX
+ 1];
2019 if (!attrs
[MACSEC_ATTR_IFINDEX
])
2022 if (parse_sa_config(attrs
, tb_sa
))
2025 if (!validate_upd_sa(tb_sa
))
2029 tx_sa
= get_txsa_from_nl(genl_info_net(info
), attrs
, tb_sa
,
2030 &dev
, &secy
, &tx_sc
, &assoc_num
);
2031 if (IS_ERR(tx_sa
)) {
2033 return PTR_ERR(tx_sa
);
2036 if (tb_sa
[MACSEC_SA_ATTR_PN
]) {
2037 spin_lock_bh(&tx_sa
->lock
);
2038 tx_sa
->next_pn
= nla_get_u32(tb_sa
[MACSEC_SA_ATTR_PN
]);
2039 spin_unlock_bh(&tx_sa
->lock
);
2042 if (tb_sa
[MACSEC_SA_ATTR_ACTIVE
])
2043 tx_sa
->active
= nla_get_u8(tb_sa
[MACSEC_SA_ATTR_ACTIVE
]);
2045 if (assoc_num
== tx_sc
->encoding_sa
)
2046 secy
->operational
= tx_sa
->active
;
2053 static int macsec_upd_rxsa(struct sk_buff
*skb
, struct genl_info
*info
)
2055 struct nlattr
**attrs
= info
->attrs
;
2056 struct net_device
*dev
;
2057 struct macsec_secy
*secy
;
2058 struct macsec_rx_sc
*rx_sc
;
2059 struct macsec_rx_sa
*rx_sa
;
2061 struct nlattr
*tb_rxsc
[MACSEC_RXSC_ATTR_MAX
+ 1];
2062 struct nlattr
*tb_sa
[MACSEC_SA_ATTR_MAX
+ 1];
2064 if (!attrs
[MACSEC_ATTR_IFINDEX
])
2067 if (parse_rxsc_config(attrs
, tb_rxsc
))
2070 if (parse_sa_config(attrs
, tb_sa
))
2073 if (!validate_upd_sa(tb_sa
))
2077 rx_sa
= get_rxsa_from_nl(genl_info_net(info
), attrs
, tb_rxsc
, tb_sa
,
2078 &dev
, &secy
, &rx_sc
, &assoc_num
);
2079 if (IS_ERR(rx_sa
)) {
2081 return PTR_ERR(rx_sa
);
2084 if (tb_sa
[MACSEC_SA_ATTR_PN
]) {
2085 spin_lock_bh(&rx_sa
->lock
);
2086 rx_sa
->next_pn
= nla_get_u32(tb_sa
[MACSEC_SA_ATTR_PN
]);
2087 spin_unlock_bh(&rx_sa
->lock
);
2090 if (tb_sa
[MACSEC_SA_ATTR_ACTIVE
])
2091 rx_sa
->active
= nla_get_u8(tb_sa
[MACSEC_SA_ATTR_ACTIVE
]);
2097 static int macsec_upd_rxsc(struct sk_buff
*skb
, struct genl_info
*info
)
2099 struct nlattr
**attrs
= info
->attrs
;
2100 struct net_device
*dev
;
2101 struct macsec_secy
*secy
;
2102 struct macsec_rx_sc
*rx_sc
;
2103 struct nlattr
*tb_rxsc
[MACSEC_RXSC_ATTR_MAX
+ 1];
2105 if (!attrs
[MACSEC_ATTR_IFINDEX
])
2108 if (parse_rxsc_config(attrs
, tb_rxsc
))
2111 if (!validate_add_rxsc(tb_rxsc
))
2115 rx_sc
= get_rxsc_from_nl(genl_info_net(info
), attrs
, tb_rxsc
, &dev
, &secy
);
2116 if (IS_ERR(rx_sc
)) {
2118 return PTR_ERR(rx_sc
);
2121 if (tb_rxsc
[MACSEC_RXSC_ATTR_ACTIVE
]) {
2122 bool new = !!nla_get_u8(tb_rxsc
[MACSEC_RXSC_ATTR_ACTIVE
]);
2124 if (rx_sc
->active
!= new)
2125 secy
->n_rx_sc
+= new ? 1 : -1;
2127 rx_sc
->active
= new;
2135 static int copy_tx_sa_stats(struct sk_buff
*skb
,
2136 struct macsec_tx_sa_stats __percpu
*pstats
)
2138 struct macsec_tx_sa_stats sum
= {0, };
2141 for_each_possible_cpu(cpu
) {
2142 const struct macsec_tx_sa_stats
*stats
= per_cpu_ptr(pstats
, cpu
);
2144 sum
.OutPktsProtected
+= stats
->OutPktsProtected
;
2145 sum
.OutPktsEncrypted
+= stats
->OutPktsEncrypted
;
2148 if (nla_put_u32(skb
, MACSEC_SA_STATS_ATTR_OUT_PKTS_PROTECTED
, sum
.OutPktsProtected
) ||
2149 nla_put_u32(skb
, MACSEC_SA_STATS_ATTR_OUT_PKTS_ENCRYPTED
, sum
.OutPktsEncrypted
))
2155 static int copy_rx_sa_stats(struct sk_buff
*skb
,
2156 struct macsec_rx_sa_stats __percpu
*pstats
)
2158 struct macsec_rx_sa_stats sum
= {0, };
2161 for_each_possible_cpu(cpu
) {
2162 const struct macsec_rx_sa_stats
*stats
= per_cpu_ptr(pstats
, cpu
);
2164 sum
.InPktsOK
+= stats
->InPktsOK
;
2165 sum
.InPktsInvalid
+= stats
->InPktsInvalid
;
2166 sum
.InPktsNotValid
+= stats
->InPktsNotValid
;
2167 sum
.InPktsNotUsingSA
+= stats
->InPktsNotUsingSA
;
2168 sum
.InPktsUnusedSA
+= stats
->InPktsUnusedSA
;
2171 if (nla_put_u32(skb
, MACSEC_SA_STATS_ATTR_IN_PKTS_OK
, sum
.InPktsOK
) ||
2172 nla_put_u32(skb
, MACSEC_SA_STATS_ATTR_IN_PKTS_INVALID
, sum
.InPktsInvalid
) ||
2173 nla_put_u32(skb
, MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_VALID
, sum
.InPktsNotValid
) ||
2174 nla_put_u32(skb
, MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_USING_SA
, sum
.InPktsNotUsingSA
) ||
2175 nla_put_u32(skb
, MACSEC_SA_STATS_ATTR_IN_PKTS_UNUSED_SA
, sum
.InPktsUnusedSA
))
2181 static int copy_rx_sc_stats(struct sk_buff
*skb
,
2182 struct pcpu_rx_sc_stats __percpu
*pstats
)
2184 struct macsec_rx_sc_stats sum
= {0, };
2187 for_each_possible_cpu(cpu
) {
2188 const struct pcpu_rx_sc_stats
*stats
;
2189 struct macsec_rx_sc_stats tmp
;
2192 stats
= per_cpu_ptr(pstats
, cpu
);
2194 start
= u64_stats_fetch_begin_irq(&stats
->syncp
);
2195 memcpy(&tmp
, &stats
->stats
, sizeof(tmp
));
2196 } while (u64_stats_fetch_retry_irq(&stats
->syncp
, start
));
2198 sum
.InOctetsValidated
+= tmp
.InOctetsValidated
;
2199 sum
.InOctetsDecrypted
+= tmp
.InOctetsDecrypted
;
2200 sum
.InPktsUnchecked
+= tmp
.InPktsUnchecked
;
2201 sum
.InPktsDelayed
+= tmp
.InPktsDelayed
;
2202 sum
.InPktsOK
+= tmp
.InPktsOK
;
2203 sum
.InPktsInvalid
+= tmp
.InPktsInvalid
;
2204 sum
.InPktsLate
+= tmp
.InPktsLate
;
2205 sum
.InPktsNotValid
+= tmp
.InPktsNotValid
;
2206 sum
.InPktsNotUsingSA
+= tmp
.InPktsNotUsingSA
;
2207 sum
.InPktsUnusedSA
+= tmp
.InPktsUnusedSA
;
2210 if (nla_put_u64_64bit(skb
, MACSEC_RXSC_STATS_ATTR_IN_OCTETS_VALIDATED
,
2211 sum
.InOctetsValidated
,
2212 MACSEC_RXSC_STATS_ATTR_PAD
) ||
2213 nla_put_u64_64bit(skb
, MACSEC_RXSC_STATS_ATTR_IN_OCTETS_DECRYPTED
,
2214 sum
.InOctetsDecrypted
,
2215 MACSEC_RXSC_STATS_ATTR_PAD
) ||
2216 nla_put_u64_64bit(skb
, MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNCHECKED
,
2217 sum
.InPktsUnchecked
,
2218 MACSEC_RXSC_STATS_ATTR_PAD
) ||
2219 nla_put_u64_64bit(skb
, MACSEC_RXSC_STATS_ATTR_IN_PKTS_DELAYED
,
2221 MACSEC_RXSC_STATS_ATTR_PAD
) ||
2222 nla_put_u64_64bit(skb
, MACSEC_RXSC_STATS_ATTR_IN_PKTS_OK
,
2224 MACSEC_RXSC_STATS_ATTR_PAD
) ||
2225 nla_put_u64_64bit(skb
, MACSEC_RXSC_STATS_ATTR_IN_PKTS_INVALID
,
2227 MACSEC_RXSC_STATS_ATTR_PAD
) ||
2228 nla_put_u64_64bit(skb
, MACSEC_RXSC_STATS_ATTR_IN_PKTS_LATE
,
2230 MACSEC_RXSC_STATS_ATTR_PAD
) ||
2231 nla_put_u64_64bit(skb
, MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_VALID
,
2233 MACSEC_RXSC_STATS_ATTR_PAD
) ||
2234 nla_put_u64_64bit(skb
, MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_USING_SA
,
2235 sum
.InPktsNotUsingSA
,
2236 MACSEC_RXSC_STATS_ATTR_PAD
) ||
2237 nla_put_u64_64bit(skb
, MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNUSED_SA
,
2239 MACSEC_RXSC_STATS_ATTR_PAD
))
2245 static int copy_tx_sc_stats(struct sk_buff
*skb
,
2246 struct pcpu_tx_sc_stats __percpu
*pstats
)
2248 struct macsec_tx_sc_stats sum
= {0, };
2251 for_each_possible_cpu(cpu
) {
2252 const struct pcpu_tx_sc_stats
*stats
;
2253 struct macsec_tx_sc_stats tmp
;
2256 stats
= per_cpu_ptr(pstats
, cpu
);
2258 start
= u64_stats_fetch_begin_irq(&stats
->syncp
);
2259 memcpy(&tmp
, &stats
->stats
, sizeof(tmp
));
2260 } while (u64_stats_fetch_retry_irq(&stats
->syncp
, start
));
2262 sum
.OutPktsProtected
+= tmp
.OutPktsProtected
;
2263 sum
.OutPktsEncrypted
+= tmp
.OutPktsEncrypted
;
2264 sum
.OutOctetsProtected
+= tmp
.OutOctetsProtected
;
2265 sum
.OutOctetsEncrypted
+= tmp
.OutOctetsEncrypted
;
2268 if (nla_put_u64_64bit(skb
, MACSEC_TXSC_STATS_ATTR_OUT_PKTS_PROTECTED
,
2269 sum
.OutPktsProtected
,
2270 MACSEC_TXSC_STATS_ATTR_PAD
) ||
2271 nla_put_u64_64bit(skb
, MACSEC_TXSC_STATS_ATTR_OUT_PKTS_ENCRYPTED
,
2272 sum
.OutPktsEncrypted
,
2273 MACSEC_TXSC_STATS_ATTR_PAD
) ||
2274 nla_put_u64_64bit(skb
, MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_PROTECTED
,
2275 sum
.OutOctetsProtected
,
2276 MACSEC_TXSC_STATS_ATTR_PAD
) ||
2277 nla_put_u64_64bit(skb
, MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_ENCRYPTED
,
2278 sum
.OutOctetsEncrypted
,
2279 MACSEC_TXSC_STATS_ATTR_PAD
))
2285 static int copy_secy_stats(struct sk_buff
*skb
,
2286 struct pcpu_secy_stats __percpu
*pstats
)
2288 struct macsec_dev_stats sum
= {0, };
2291 for_each_possible_cpu(cpu
) {
2292 const struct pcpu_secy_stats
*stats
;
2293 struct macsec_dev_stats tmp
;
2296 stats
= per_cpu_ptr(pstats
, cpu
);
2298 start
= u64_stats_fetch_begin_irq(&stats
->syncp
);
2299 memcpy(&tmp
, &stats
->stats
, sizeof(tmp
));
2300 } while (u64_stats_fetch_retry_irq(&stats
->syncp
, start
));
2302 sum
.OutPktsUntagged
+= tmp
.OutPktsUntagged
;
2303 sum
.InPktsUntagged
+= tmp
.InPktsUntagged
;
2304 sum
.OutPktsTooLong
+= tmp
.OutPktsTooLong
;
2305 sum
.InPktsNoTag
+= tmp
.InPktsNoTag
;
2306 sum
.InPktsBadTag
+= tmp
.InPktsBadTag
;
2307 sum
.InPktsUnknownSCI
+= tmp
.InPktsUnknownSCI
;
2308 sum
.InPktsNoSCI
+= tmp
.InPktsNoSCI
;
2309 sum
.InPktsOverrun
+= tmp
.InPktsOverrun
;
2312 if (nla_put_u64_64bit(skb
, MACSEC_SECY_STATS_ATTR_OUT_PKTS_UNTAGGED
,
2313 sum
.OutPktsUntagged
,
2314 MACSEC_SECY_STATS_ATTR_PAD
) ||
2315 nla_put_u64_64bit(skb
, MACSEC_SECY_STATS_ATTR_IN_PKTS_UNTAGGED
,
2317 MACSEC_SECY_STATS_ATTR_PAD
) ||
2318 nla_put_u64_64bit(skb
, MACSEC_SECY_STATS_ATTR_OUT_PKTS_TOO_LONG
,
2320 MACSEC_SECY_STATS_ATTR_PAD
) ||
2321 nla_put_u64_64bit(skb
, MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_TAG
,
2323 MACSEC_SECY_STATS_ATTR_PAD
) ||
2324 nla_put_u64_64bit(skb
, MACSEC_SECY_STATS_ATTR_IN_PKTS_BAD_TAG
,
2326 MACSEC_SECY_STATS_ATTR_PAD
) ||
2327 nla_put_u64_64bit(skb
, MACSEC_SECY_STATS_ATTR_IN_PKTS_UNKNOWN_SCI
,
2328 sum
.InPktsUnknownSCI
,
2329 MACSEC_SECY_STATS_ATTR_PAD
) ||
2330 nla_put_u64_64bit(skb
, MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_SCI
,
2332 MACSEC_SECY_STATS_ATTR_PAD
) ||
2333 nla_put_u64_64bit(skb
, MACSEC_SECY_STATS_ATTR_IN_PKTS_OVERRUN
,
2335 MACSEC_SECY_STATS_ATTR_PAD
))
2341 static int nla_put_secy(struct macsec_secy
*secy
, struct sk_buff
*skb
)
2343 struct macsec_tx_sc
*tx_sc
= &secy
->tx_sc
;
2344 struct nlattr
*secy_nest
= nla_nest_start(skb
, MACSEC_ATTR_SECY
);
2349 if (nla_put_sci(skb
, MACSEC_SECY_ATTR_SCI
, secy
->sci
,
2350 MACSEC_SECY_ATTR_PAD
) ||
2351 nla_put_u64_64bit(skb
, MACSEC_SECY_ATTR_CIPHER_SUITE
,
2352 MACSEC_DEFAULT_CIPHER_ID
,
2353 MACSEC_SECY_ATTR_PAD
) ||
2354 nla_put_u8(skb
, MACSEC_SECY_ATTR_ICV_LEN
, secy
->icv_len
) ||
2355 nla_put_u8(skb
, MACSEC_SECY_ATTR_OPER
, secy
->operational
) ||
2356 nla_put_u8(skb
, MACSEC_SECY_ATTR_PROTECT
, secy
->protect_frames
) ||
2357 nla_put_u8(skb
, MACSEC_SECY_ATTR_REPLAY
, secy
->replay_protect
) ||
2358 nla_put_u8(skb
, MACSEC_SECY_ATTR_VALIDATE
, secy
->validate_frames
) ||
2359 nla_put_u8(skb
, MACSEC_SECY_ATTR_ENCRYPT
, tx_sc
->encrypt
) ||
2360 nla_put_u8(skb
, MACSEC_SECY_ATTR_INC_SCI
, tx_sc
->send_sci
) ||
2361 nla_put_u8(skb
, MACSEC_SECY_ATTR_ES
, tx_sc
->end_station
) ||
2362 nla_put_u8(skb
, MACSEC_SECY_ATTR_SCB
, tx_sc
->scb
) ||
2363 nla_put_u8(skb
, MACSEC_SECY_ATTR_ENCODING_SA
, tx_sc
->encoding_sa
))
2366 if (secy
->replay_protect
) {
2367 if (nla_put_u32(skb
, MACSEC_SECY_ATTR_WINDOW
, secy
->replay_window
))
2371 nla_nest_end(skb
, secy_nest
);
2375 nla_nest_cancel(skb
, secy_nest
);
2379 static int dump_secy(struct macsec_secy
*secy
, struct net_device
*dev
,
2380 struct sk_buff
*skb
, struct netlink_callback
*cb
)
2382 struct macsec_rx_sc
*rx_sc
;
2383 struct macsec_tx_sc
*tx_sc
= &secy
->tx_sc
;
2384 struct nlattr
*txsa_list
, *rxsc_list
;
2387 struct nlattr
*attr
;
2389 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
2390 &macsec_fam
, NLM_F_MULTI
, MACSEC_CMD_GET_TXSC
);
2394 genl_dump_check_consistent(cb
, hdr
, &macsec_fam
);
2396 if (nla_put_u32(skb
, MACSEC_ATTR_IFINDEX
, dev
->ifindex
))
2397 goto nla_put_failure
;
2399 if (nla_put_secy(secy
, skb
))
2400 goto nla_put_failure
;
2402 attr
= nla_nest_start(skb
, MACSEC_ATTR_TXSC_STATS
);
2404 goto nla_put_failure
;
2405 if (copy_tx_sc_stats(skb
, tx_sc
->stats
)) {
2406 nla_nest_cancel(skb
, attr
);
2407 goto nla_put_failure
;
2409 nla_nest_end(skb
, attr
);
2411 attr
= nla_nest_start(skb
, MACSEC_ATTR_SECY_STATS
);
2413 goto nla_put_failure
;
2414 if (copy_secy_stats(skb
, macsec_priv(dev
)->stats
)) {
2415 nla_nest_cancel(skb
, attr
);
2416 goto nla_put_failure
;
2418 nla_nest_end(skb
, attr
);
2420 txsa_list
= nla_nest_start(skb
, MACSEC_ATTR_TXSA_LIST
);
2422 goto nla_put_failure
;
2423 for (i
= 0, j
= 1; i
< MACSEC_NUM_AN
; i
++) {
2424 struct macsec_tx_sa
*tx_sa
= rtnl_dereference(tx_sc
->sa
[i
]);
2425 struct nlattr
*txsa_nest
;
2430 txsa_nest
= nla_nest_start(skb
, j
++);
2432 nla_nest_cancel(skb
, txsa_list
);
2433 goto nla_put_failure
;
2436 if (nla_put_u8(skb
, MACSEC_SA_ATTR_AN
, i
) ||
2437 nla_put_u32(skb
, MACSEC_SA_ATTR_PN
, tx_sa
->next_pn
) ||
2438 nla_put(skb
, MACSEC_SA_ATTR_KEYID
, MACSEC_KEYID_LEN
, tx_sa
->key
.id
) ||
2439 nla_put_u8(skb
, MACSEC_SA_ATTR_ACTIVE
, tx_sa
->active
)) {
2440 nla_nest_cancel(skb
, txsa_nest
);
2441 nla_nest_cancel(skb
, txsa_list
);
2442 goto nla_put_failure
;
2445 attr
= nla_nest_start(skb
, MACSEC_SA_ATTR_STATS
);
2447 nla_nest_cancel(skb
, txsa_nest
);
2448 nla_nest_cancel(skb
, txsa_list
);
2449 goto nla_put_failure
;
2451 if (copy_tx_sa_stats(skb
, tx_sa
->stats
)) {
2452 nla_nest_cancel(skb
, attr
);
2453 nla_nest_cancel(skb
, txsa_nest
);
2454 nla_nest_cancel(skb
, txsa_list
);
2455 goto nla_put_failure
;
2457 nla_nest_end(skb
, attr
);
2459 nla_nest_end(skb
, txsa_nest
);
2461 nla_nest_end(skb
, txsa_list
);
2463 rxsc_list
= nla_nest_start(skb
, MACSEC_ATTR_RXSC_LIST
);
2465 goto nla_put_failure
;
2468 for_each_rxsc_rtnl(secy
, rx_sc
) {
2470 struct nlattr
*rxsa_list
;
2471 struct nlattr
*rxsc_nest
= nla_nest_start(skb
, j
++);
2474 nla_nest_cancel(skb
, rxsc_list
);
2475 goto nla_put_failure
;
2478 if (nla_put_u8(skb
, MACSEC_RXSC_ATTR_ACTIVE
, rx_sc
->active
) ||
2479 nla_put_sci(skb
, MACSEC_RXSC_ATTR_SCI
, rx_sc
->sci
,
2480 MACSEC_RXSC_ATTR_PAD
)) {
2481 nla_nest_cancel(skb
, rxsc_nest
);
2482 nla_nest_cancel(skb
, rxsc_list
);
2483 goto nla_put_failure
;
2486 attr
= nla_nest_start(skb
, MACSEC_RXSC_ATTR_STATS
);
2488 nla_nest_cancel(skb
, rxsc_nest
);
2489 nla_nest_cancel(skb
, rxsc_list
);
2490 goto nla_put_failure
;
2492 if (copy_rx_sc_stats(skb
, rx_sc
->stats
)) {
2493 nla_nest_cancel(skb
, attr
);
2494 nla_nest_cancel(skb
, rxsc_nest
);
2495 nla_nest_cancel(skb
, rxsc_list
);
2496 goto nla_put_failure
;
2498 nla_nest_end(skb
, attr
);
2500 rxsa_list
= nla_nest_start(skb
, MACSEC_RXSC_ATTR_SA_LIST
);
2502 nla_nest_cancel(skb
, rxsc_nest
);
2503 nla_nest_cancel(skb
, rxsc_list
);
2504 goto nla_put_failure
;
2507 for (i
= 0, k
= 1; i
< MACSEC_NUM_AN
; i
++) {
2508 struct macsec_rx_sa
*rx_sa
= rtnl_dereference(rx_sc
->sa
[i
]);
2509 struct nlattr
*rxsa_nest
;
2514 rxsa_nest
= nla_nest_start(skb
, k
++);
2516 nla_nest_cancel(skb
, rxsa_list
);
2517 nla_nest_cancel(skb
, rxsc_nest
);
2518 nla_nest_cancel(skb
, rxsc_list
);
2519 goto nla_put_failure
;
2522 attr
= nla_nest_start(skb
, MACSEC_SA_ATTR_STATS
);
2524 nla_nest_cancel(skb
, rxsa_list
);
2525 nla_nest_cancel(skb
, rxsc_nest
);
2526 nla_nest_cancel(skb
, rxsc_list
);
2527 goto nla_put_failure
;
2529 if (copy_rx_sa_stats(skb
, rx_sa
->stats
)) {
2530 nla_nest_cancel(skb
, attr
);
2531 nla_nest_cancel(skb
, rxsa_list
);
2532 nla_nest_cancel(skb
, rxsc_nest
);
2533 nla_nest_cancel(skb
, rxsc_list
);
2534 goto nla_put_failure
;
2536 nla_nest_end(skb
, attr
);
2538 if (nla_put_u8(skb
, MACSEC_SA_ATTR_AN
, i
) ||
2539 nla_put_u32(skb
, MACSEC_SA_ATTR_PN
, rx_sa
->next_pn
) ||
2540 nla_put(skb
, MACSEC_SA_ATTR_KEYID
, MACSEC_KEYID_LEN
, rx_sa
->key
.id
) ||
2541 nla_put_u8(skb
, MACSEC_SA_ATTR_ACTIVE
, rx_sa
->active
)) {
2542 nla_nest_cancel(skb
, rxsa_nest
);
2543 nla_nest_cancel(skb
, rxsc_nest
);
2544 nla_nest_cancel(skb
, rxsc_list
);
2545 goto nla_put_failure
;
2547 nla_nest_end(skb
, rxsa_nest
);
2550 nla_nest_end(skb
, rxsa_list
);
2551 nla_nest_end(skb
, rxsc_nest
);
2554 nla_nest_end(skb
, rxsc_list
);
2556 genlmsg_end(skb
, hdr
);
2561 genlmsg_cancel(skb
, hdr
);
2565 static int macsec_generation
= 1; /* protected by RTNL */
2567 static int macsec_dump_txsc(struct sk_buff
*skb
, struct netlink_callback
*cb
)
2569 struct net
*net
= sock_net(skb
->sk
);
2570 struct net_device
*dev
;
2573 dev_idx
= cb
->args
[0];
2578 cb
->seq
= macsec_generation
;
2580 for_each_netdev(net
, dev
) {
2581 struct macsec_secy
*secy
;
2586 if (!netif_is_macsec(dev
))
2589 secy
= &macsec_priv(dev
)->secy
;
2590 if (dump_secy(secy
, dev
, skb
, cb
) < 0)
2602 static const struct genl_ops macsec_genl_ops
[] = {
2604 .cmd
= MACSEC_CMD_GET_TXSC
,
2605 .dumpit
= macsec_dump_txsc
,
2606 .policy
= macsec_genl_policy
,
2609 .cmd
= MACSEC_CMD_ADD_RXSC
,
2610 .doit
= macsec_add_rxsc
,
2611 .policy
= macsec_genl_policy
,
2612 .flags
= GENL_ADMIN_PERM
,
2615 .cmd
= MACSEC_CMD_DEL_RXSC
,
2616 .doit
= macsec_del_rxsc
,
2617 .policy
= macsec_genl_policy
,
2618 .flags
= GENL_ADMIN_PERM
,
2621 .cmd
= MACSEC_CMD_UPD_RXSC
,
2622 .doit
= macsec_upd_rxsc
,
2623 .policy
= macsec_genl_policy
,
2624 .flags
= GENL_ADMIN_PERM
,
2627 .cmd
= MACSEC_CMD_ADD_TXSA
,
2628 .doit
= macsec_add_txsa
,
2629 .policy
= macsec_genl_policy
,
2630 .flags
= GENL_ADMIN_PERM
,
2633 .cmd
= MACSEC_CMD_DEL_TXSA
,
2634 .doit
= macsec_del_txsa
,
2635 .policy
= macsec_genl_policy
,
2636 .flags
= GENL_ADMIN_PERM
,
2639 .cmd
= MACSEC_CMD_UPD_TXSA
,
2640 .doit
= macsec_upd_txsa
,
2641 .policy
= macsec_genl_policy
,
2642 .flags
= GENL_ADMIN_PERM
,
2645 .cmd
= MACSEC_CMD_ADD_RXSA
,
2646 .doit
= macsec_add_rxsa
,
2647 .policy
= macsec_genl_policy
,
2648 .flags
= GENL_ADMIN_PERM
,
2651 .cmd
= MACSEC_CMD_DEL_RXSA
,
2652 .doit
= macsec_del_rxsa
,
2653 .policy
= macsec_genl_policy
,
2654 .flags
= GENL_ADMIN_PERM
,
2657 .cmd
= MACSEC_CMD_UPD_RXSA
,
2658 .doit
= macsec_upd_rxsa
,
2659 .policy
= macsec_genl_policy
,
2660 .flags
= GENL_ADMIN_PERM
,
2664 static struct genl_family macsec_fam __ro_after_init
= {
2665 .name
= MACSEC_GENL_NAME
,
2667 .version
= MACSEC_GENL_VERSION
,
2668 .maxattr
= MACSEC_ATTR_MAX
,
2670 .module
= THIS_MODULE
,
2671 .ops
= macsec_genl_ops
,
2672 .n_ops
= ARRAY_SIZE(macsec_genl_ops
),
2675 static netdev_tx_t
macsec_start_xmit(struct sk_buff
*skb
,
2676 struct net_device
*dev
)
2678 struct macsec_dev
*macsec
= netdev_priv(dev
);
2679 struct macsec_secy
*secy
= &macsec
->secy
;
2680 struct pcpu_secy_stats
*secy_stats
;
2684 if (!secy
->protect_frames
) {
2685 secy_stats
= this_cpu_ptr(macsec
->stats
);
2686 u64_stats_update_begin(&secy_stats
->syncp
);
2687 secy_stats
->stats
.OutPktsUntagged
++;
2688 u64_stats_update_end(&secy_stats
->syncp
);
2689 skb
->dev
= macsec
->real_dev
;
2691 ret
= dev_queue_xmit(skb
);
2692 count_tx(dev
, ret
, len
);
2696 if (!secy
->operational
) {
2698 dev
->stats
.tx_dropped
++;
2699 return NETDEV_TX_OK
;
2702 skb
= macsec_encrypt(skb
, dev
);
2704 if (PTR_ERR(skb
) != -EINPROGRESS
)
2705 dev
->stats
.tx_dropped
++;
2706 return NETDEV_TX_OK
;
2709 macsec_count_tx(skb
, &macsec
->secy
.tx_sc
, macsec_skb_cb(skb
)->tx_sa
);
2711 macsec_encrypt_finish(skb
, dev
);
2713 ret
= dev_queue_xmit(skb
);
2714 count_tx(dev
, ret
, len
);
2718 #define MACSEC_FEATURES \
2719 (NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST)
2720 static struct lock_class_key macsec_netdev_addr_lock_key
;
2722 static int macsec_dev_init(struct net_device
*dev
)
2724 struct macsec_dev
*macsec
= macsec_priv(dev
);
2725 struct net_device
*real_dev
= macsec
->real_dev
;
2728 dev
->tstats
= netdev_alloc_pcpu_stats(struct pcpu_sw_netstats
);
2732 err
= gro_cells_init(&macsec
->gro_cells
, dev
);
2734 free_percpu(dev
->tstats
);
2738 dev
->features
= real_dev
->features
& MACSEC_FEATURES
;
2739 dev
->features
|= NETIF_F_LLTX
| NETIF_F_GSO_SOFTWARE
;
2741 dev
->needed_headroom
= real_dev
->needed_headroom
+
2742 MACSEC_NEEDED_HEADROOM
;
2743 dev
->needed_tailroom
= real_dev
->needed_tailroom
+
2744 MACSEC_NEEDED_TAILROOM
;
2746 if (is_zero_ether_addr(dev
->dev_addr
))
2747 eth_hw_addr_inherit(dev
, real_dev
);
2748 if (is_zero_ether_addr(dev
->broadcast
))
2749 memcpy(dev
->broadcast
, real_dev
->broadcast
, dev
->addr_len
);
2754 static void macsec_dev_uninit(struct net_device
*dev
)
2756 struct macsec_dev
*macsec
= macsec_priv(dev
);
2758 gro_cells_destroy(&macsec
->gro_cells
);
2759 free_percpu(dev
->tstats
);
2762 static netdev_features_t
macsec_fix_features(struct net_device
*dev
,
2763 netdev_features_t features
)
2765 struct macsec_dev
*macsec
= macsec_priv(dev
);
2766 struct net_device
*real_dev
= macsec
->real_dev
;
2768 features
&= (real_dev
->features
& MACSEC_FEATURES
) |
2769 NETIF_F_GSO_SOFTWARE
| NETIF_F_SOFT_FEATURES
;
2770 features
|= NETIF_F_LLTX
;
2775 static int macsec_dev_open(struct net_device
*dev
)
2777 struct macsec_dev
*macsec
= macsec_priv(dev
);
2778 struct net_device
*real_dev
= macsec
->real_dev
;
2781 if (!(real_dev
->flags
& IFF_UP
))
2784 err
= dev_uc_add(real_dev
, dev
->dev_addr
);
2788 if (dev
->flags
& IFF_ALLMULTI
) {
2789 err
= dev_set_allmulti(real_dev
, 1);
2794 if (dev
->flags
& IFF_PROMISC
) {
2795 err
= dev_set_promiscuity(real_dev
, 1);
2797 goto clear_allmulti
;
2800 if (netif_carrier_ok(real_dev
))
2801 netif_carrier_on(dev
);
2805 if (dev
->flags
& IFF_ALLMULTI
)
2806 dev_set_allmulti(real_dev
, -1);
2808 dev_uc_del(real_dev
, dev
->dev_addr
);
2809 netif_carrier_off(dev
);
2813 static int macsec_dev_stop(struct net_device
*dev
)
2815 struct macsec_dev
*macsec
= macsec_priv(dev
);
2816 struct net_device
*real_dev
= macsec
->real_dev
;
2818 netif_carrier_off(dev
);
2820 dev_mc_unsync(real_dev
, dev
);
2821 dev_uc_unsync(real_dev
, dev
);
2823 if (dev
->flags
& IFF_ALLMULTI
)
2824 dev_set_allmulti(real_dev
, -1);
2826 if (dev
->flags
& IFF_PROMISC
)
2827 dev_set_promiscuity(real_dev
, -1);
2829 dev_uc_del(real_dev
, dev
->dev_addr
);
2834 static void macsec_dev_change_rx_flags(struct net_device
*dev
, int change
)
2836 struct net_device
*real_dev
= macsec_priv(dev
)->real_dev
;
2838 if (!(dev
->flags
& IFF_UP
))
2841 if (change
& IFF_ALLMULTI
)
2842 dev_set_allmulti(real_dev
, dev
->flags
& IFF_ALLMULTI
? 1 : -1);
2844 if (change
& IFF_PROMISC
)
2845 dev_set_promiscuity(real_dev
,
2846 dev
->flags
& IFF_PROMISC
? 1 : -1);
2849 static void macsec_dev_set_rx_mode(struct net_device
*dev
)
2851 struct net_device
*real_dev
= macsec_priv(dev
)->real_dev
;
2853 dev_mc_sync(real_dev
, dev
);
2854 dev_uc_sync(real_dev
, dev
);
2857 static int macsec_set_mac_address(struct net_device
*dev
, void *p
)
2859 struct macsec_dev
*macsec
= macsec_priv(dev
);
2860 struct net_device
*real_dev
= macsec
->real_dev
;
2861 struct sockaddr
*addr
= p
;
2864 if (!is_valid_ether_addr(addr
->sa_data
))
2865 return -EADDRNOTAVAIL
;
2867 if (!(dev
->flags
& IFF_UP
))
2870 err
= dev_uc_add(real_dev
, addr
->sa_data
);
2874 dev_uc_del(real_dev
, dev
->dev_addr
);
2877 ether_addr_copy(dev
->dev_addr
, addr
->sa_data
);
2881 static int macsec_change_mtu(struct net_device
*dev
, int new_mtu
)
2883 struct macsec_dev
*macsec
= macsec_priv(dev
);
2884 unsigned int extra
= macsec
->secy
.icv_len
+ macsec_extra_len(true);
2886 if (macsec
->real_dev
->mtu
- extra
< new_mtu
)
2894 static void macsec_get_stats64(struct net_device
*dev
,
2895 struct rtnl_link_stats64
*s
)
2902 for_each_possible_cpu(cpu
) {
2903 struct pcpu_sw_netstats
*stats
;
2904 struct pcpu_sw_netstats tmp
;
2907 stats
= per_cpu_ptr(dev
->tstats
, cpu
);
2909 start
= u64_stats_fetch_begin_irq(&stats
->syncp
);
2910 tmp
.rx_packets
= stats
->rx_packets
;
2911 tmp
.rx_bytes
= stats
->rx_bytes
;
2912 tmp
.tx_packets
= stats
->tx_packets
;
2913 tmp
.tx_bytes
= stats
->tx_bytes
;
2914 } while (u64_stats_fetch_retry_irq(&stats
->syncp
, start
));
2916 s
->rx_packets
+= tmp
.rx_packets
;
2917 s
->rx_bytes
+= tmp
.rx_bytes
;
2918 s
->tx_packets
+= tmp
.tx_packets
;
2919 s
->tx_bytes
+= tmp
.tx_bytes
;
2922 s
->rx_dropped
= dev
->stats
.rx_dropped
;
2923 s
->tx_dropped
= dev
->stats
.tx_dropped
;
2926 static int macsec_get_iflink(const struct net_device
*dev
)
2928 return macsec_priv(dev
)->real_dev
->ifindex
;
2932 static int macsec_get_nest_level(struct net_device
*dev
)
2934 return macsec_priv(dev
)->nest_level
;
2938 static const struct net_device_ops macsec_netdev_ops
= {
2939 .ndo_init
= macsec_dev_init
,
2940 .ndo_uninit
= macsec_dev_uninit
,
2941 .ndo_open
= macsec_dev_open
,
2942 .ndo_stop
= macsec_dev_stop
,
2943 .ndo_fix_features
= macsec_fix_features
,
2944 .ndo_change_mtu
= macsec_change_mtu
,
2945 .ndo_set_rx_mode
= macsec_dev_set_rx_mode
,
2946 .ndo_change_rx_flags
= macsec_dev_change_rx_flags
,
2947 .ndo_set_mac_address
= macsec_set_mac_address
,
2948 .ndo_start_xmit
= macsec_start_xmit
,
2949 .ndo_get_stats64
= macsec_get_stats64
,
2950 .ndo_get_iflink
= macsec_get_iflink
,
2951 .ndo_get_lock_subclass
= macsec_get_nest_level
,
2954 static const struct device_type macsec_type
= {
2958 static const struct nla_policy macsec_rtnl_policy
[IFLA_MACSEC_MAX
+ 1] = {
2959 [IFLA_MACSEC_SCI
] = { .type
= NLA_U64
},
2960 [IFLA_MACSEC_ICV_LEN
] = { .type
= NLA_U8
},
2961 [IFLA_MACSEC_CIPHER_SUITE
] = { .type
= NLA_U64
},
2962 [IFLA_MACSEC_WINDOW
] = { .type
= NLA_U32
},
2963 [IFLA_MACSEC_ENCODING_SA
] = { .type
= NLA_U8
},
2964 [IFLA_MACSEC_ENCRYPT
] = { .type
= NLA_U8
},
2965 [IFLA_MACSEC_PROTECT
] = { .type
= NLA_U8
},
2966 [IFLA_MACSEC_INC_SCI
] = { .type
= NLA_U8
},
2967 [IFLA_MACSEC_ES
] = { .type
= NLA_U8
},
2968 [IFLA_MACSEC_SCB
] = { .type
= NLA_U8
},
2969 [IFLA_MACSEC_REPLAY_PROTECT
] = { .type
= NLA_U8
},
2970 [IFLA_MACSEC_VALIDATION
] = { .type
= NLA_U8
},
2973 static void macsec_free_netdev(struct net_device
*dev
)
2975 struct macsec_dev
*macsec
= macsec_priv(dev
);
2976 struct net_device
*real_dev
= macsec
->real_dev
;
2978 free_percpu(macsec
->stats
);
2979 free_percpu(macsec
->secy
.tx_sc
.stats
);
2985 static void macsec_setup(struct net_device
*dev
)
2989 dev
->max_mtu
= ETH_MAX_MTU
;
2990 dev
->priv_flags
|= IFF_NO_QUEUE
;
2991 dev
->netdev_ops
= &macsec_netdev_ops
;
2992 dev
->destructor
= macsec_free_netdev
;
2993 SET_NETDEV_DEVTYPE(dev
, &macsec_type
);
2995 eth_zero_addr(dev
->broadcast
);
2998 static void macsec_changelink_common(struct net_device
*dev
,
2999 struct nlattr
*data
[])
3001 struct macsec_secy
*secy
;
3002 struct macsec_tx_sc
*tx_sc
;
3004 secy
= &macsec_priv(dev
)->secy
;
3005 tx_sc
= &secy
->tx_sc
;
3007 if (data
[IFLA_MACSEC_ENCODING_SA
]) {
3008 struct macsec_tx_sa
*tx_sa
;
3010 tx_sc
->encoding_sa
= nla_get_u8(data
[IFLA_MACSEC_ENCODING_SA
]);
3011 tx_sa
= rtnl_dereference(tx_sc
->sa
[tx_sc
->encoding_sa
]);
3013 secy
->operational
= tx_sa
&& tx_sa
->active
;
3016 if (data
[IFLA_MACSEC_WINDOW
])
3017 secy
->replay_window
= nla_get_u32(data
[IFLA_MACSEC_WINDOW
]);
3019 if (data
[IFLA_MACSEC_ENCRYPT
])
3020 tx_sc
->encrypt
= !!nla_get_u8(data
[IFLA_MACSEC_ENCRYPT
]);
3022 if (data
[IFLA_MACSEC_PROTECT
])
3023 secy
->protect_frames
= !!nla_get_u8(data
[IFLA_MACSEC_PROTECT
]);
3025 if (data
[IFLA_MACSEC_INC_SCI
])
3026 tx_sc
->send_sci
= !!nla_get_u8(data
[IFLA_MACSEC_INC_SCI
]);
3028 if (data
[IFLA_MACSEC_ES
])
3029 tx_sc
->end_station
= !!nla_get_u8(data
[IFLA_MACSEC_ES
]);
3031 if (data
[IFLA_MACSEC_SCB
])
3032 tx_sc
->scb
= !!nla_get_u8(data
[IFLA_MACSEC_SCB
]);
3034 if (data
[IFLA_MACSEC_REPLAY_PROTECT
])
3035 secy
->replay_protect
= !!nla_get_u8(data
[IFLA_MACSEC_REPLAY_PROTECT
]);
3037 if (data
[IFLA_MACSEC_VALIDATION
])
3038 secy
->validate_frames
= nla_get_u8(data
[IFLA_MACSEC_VALIDATION
]);
3041 static int macsec_changelink(struct net_device
*dev
, struct nlattr
*tb
[],
3042 struct nlattr
*data
[])
3047 if (data
[IFLA_MACSEC_CIPHER_SUITE
] ||
3048 data
[IFLA_MACSEC_ICV_LEN
] ||
3049 data
[IFLA_MACSEC_SCI
] ||
3050 data
[IFLA_MACSEC_PORT
])
3053 macsec_changelink_common(dev
, data
);
3058 static void macsec_del_dev(struct macsec_dev
*macsec
)
3062 while (macsec
->secy
.rx_sc
) {
3063 struct macsec_rx_sc
*rx_sc
= rtnl_dereference(macsec
->secy
.rx_sc
);
3065 rcu_assign_pointer(macsec
->secy
.rx_sc
, rx_sc
->next
);
3069 for (i
= 0; i
< MACSEC_NUM_AN
; i
++) {
3070 struct macsec_tx_sa
*sa
= rtnl_dereference(macsec
->secy
.tx_sc
.sa
[i
]);
3073 RCU_INIT_POINTER(macsec
->secy
.tx_sc
.sa
[i
], NULL
);
3079 static void macsec_common_dellink(struct net_device
*dev
, struct list_head
*head
)
3081 struct macsec_dev
*macsec
= macsec_priv(dev
);
3082 struct net_device
*real_dev
= macsec
->real_dev
;
3084 unregister_netdevice_queue(dev
, head
);
3085 list_del_rcu(&macsec
->secys
);
3086 macsec_del_dev(macsec
);
3087 netdev_upper_dev_unlink(real_dev
, dev
);
3089 macsec_generation
++;
3092 static void macsec_dellink(struct net_device
*dev
, struct list_head
*head
)
3094 struct macsec_dev
*macsec
= macsec_priv(dev
);
3095 struct net_device
*real_dev
= macsec
->real_dev
;
3096 struct macsec_rxh_data
*rxd
= macsec_data_rtnl(real_dev
);
3098 macsec_common_dellink(dev
, head
);
3100 if (list_empty(&rxd
->secys
)) {
3101 netdev_rx_handler_unregister(real_dev
);
3106 static int register_macsec_dev(struct net_device
*real_dev
,
3107 struct net_device
*dev
)
3109 struct macsec_dev
*macsec
= macsec_priv(dev
);
3110 struct macsec_rxh_data
*rxd
= macsec_data_rtnl(real_dev
);
3115 rxd
= kmalloc(sizeof(*rxd
), GFP_KERNEL
);
3119 INIT_LIST_HEAD(&rxd
->secys
);
3121 err
= netdev_rx_handler_register(real_dev
, macsec_handle_frame
,
3129 list_add_tail_rcu(&macsec
->secys
, &rxd
->secys
);
3133 static bool sci_exists(struct net_device
*dev
, sci_t sci
)
3135 struct macsec_rxh_data
*rxd
= macsec_data_rtnl(dev
);
3136 struct macsec_dev
*macsec
;
3138 list_for_each_entry(macsec
, &rxd
->secys
, secys
) {
3139 if (macsec
->secy
.sci
== sci
)
3146 static sci_t
dev_to_sci(struct net_device
*dev
, __be16 port
)
3148 return make_sci(dev
->dev_addr
, port
);
3151 static int macsec_add_dev(struct net_device
*dev
, sci_t sci
, u8 icv_len
)
3153 struct macsec_dev
*macsec
= macsec_priv(dev
);
3154 struct macsec_secy
*secy
= &macsec
->secy
;
3156 macsec
->stats
= netdev_alloc_pcpu_stats(struct pcpu_secy_stats
);
3160 secy
->tx_sc
.stats
= netdev_alloc_pcpu_stats(struct pcpu_tx_sc_stats
);
3161 if (!secy
->tx_sc
.stats
) {
3162 free_percpu(macsec
->stats
);
3166 if (sci
== MACSEC_UNDEF_SCI
)
3167 sci
= dev_to_sci(dev
, MACSEC_PORT_ES
);
3170 secy
->operational
= true;
3171 secy
->key_len
= DEFAULT_SAK_LEN
;
3172 secy
->icv_len
= icv_len
;
3173 secy
->validate_frames
= MACSEC_VALIDATE_DEFAULT
;
3174 secy
->protect_frames
= true;
3175 secy
->replay_protect
= false;
3178 secy
->tx_sc
.active
= true;
3179 secy
->tx_sc
.encoding_sa
= DEFAULT_ENCODING_SA
;
3180 secy
->tx_sc
.encrypt
= DEFAULT_ENCRYPT
;
3181 secy
->tx_sc
.send_sci
= DEFAULT_SEND_SCI
;
3182 secy
->tx_sc
.end_station
= false;
3183 secy
->tx_sc
.scb
= false;
3188 static int macsec_newlink(struct net
*net
, struct net_device
*dev
,
3189 struct nlattr
*tb
[], struct nlattr
*data
[])
3191 struct macsec_dev
*macsec
= macsec_priv(dev
);
3192 struct net_device
*real_dev
;
3195 u8 icv_len
= DEFAULT_ICV_LEN
;
3196 rx_handler_func_t
*rx_handler
;
3200 real_dev
= __dev_get_by_index(net
, nla_get_u32(tb
[IFLA_LINK
]));
3204 dev
->priv_flags
|= IFF_MACSEC
;
3206 macsec
->real_dev
= real_dev
;
3208 if (data
&& data
[IFLA_MACSEC_ICV_LEN
])
3209 icv_len
= nla_get_u8(data
[IFLA_MACSEC_ICV_LEN
]);
3210 dev
->mtu
= real_dev
->mtu
- icv_len
- macsec_extra_len(true);
3212 rx_handler
= rtnl_dereference(real_dev
->rx_handler
);
3213 if (rx_handler
&& rx_handler
!= macsec_handle_frame
)
3216 err
= register_netdevice(dev
);
3222 macsec
->nest_level
= dev_get_nest_level(real_dev
) + 1;
3223 netdev_lockdep_set_classes(dev
);
3224 lockdep_set_class_and_subclass(&dev
->addr_list_lock
,
3225 &macsec_netdev_addr_lock_key
,
3226 macsec_get_nest_level(dev
));
3228 err
= netdev_upper_dev_link(real_dev
, dev
);
3232 /* need to be already registered so that ->init has run and
3233 * the MAC addr is set
3235 if (data
&& data
[IFLA_MACSEC_SCI
])
3236 sci
= nla_get_sci(data
[IFLA_MACSEC_SCI
]);
3237 else if (data
&& data
[IFLA_MACSEC_PORT
])
3238 sci
= dev_to_sci(dev
, nla_get_be16(data
[IFLA_MACSEC_PORT
]));
3240 sci
= dev_to_sci(dev
, MACSEC_PORT_ES
);
3242 if (rx_handler
&& sci_exists(real_dev
, sci
)) {
3247 err
= macsec_add_dev(dev
, sci
, icv_len
);
3252 macsec_changelink_common(dev
, data
);
3254 err
= register_macsec_dev(real_dev
, dev
);
3258 macsec_generation
++;
3263 macsec_del_dev(macsec
);
3265 netdev_upper_dev_unlink(real_dev
, dev
);
3267 unregister_netdevice(dev
);
3271 static int macsec_validate_attr(struct nlattr
*tb
[], struct nlattr
*data
[])
3273 u64 csid
= MACSEC_DEFAULT_CIPHER_ID
;
3274 u8 icv_len
= DEFAULT_ICV_LEN
;
3281 if (data
[IFLA_MACSEC_CIPHER_SUITE
])
3282 csid
= nla_get_u64(data
[IFLA_MACSEC_CIPHER_SUITE
]);
3284 if (data
[IFLA_MACSEC_ICV_LEN
]) {
3285 icv_len
= nla_get_u8(data
[IFLA_MACSEC_ICV_LEN
]);
3286 if (icv_len
!= DEFAULT_ICV_LEN
) {
3287 char dummy_key
[DEFAULT_SAK_LEN
] = { 0 };
3288 struct crypto_aead
*dummy_tfm
;
3290 dummy_tfm
= macsec_alloc_tfm(dummy_key
,
3293 if (IS_ERR(dummy_tfm
))
3294 return PTR_ERR(dummy_tfm
);
3295 crypto_free_aead(dummy_tfm
);
3300 case MACSEC_DEFAULT_CIPHER_ID
:
3301 case MACSEC_DEFAULT_CIPHER_ALT
:
3302 if (icv_len
< MACSEC_MIN_ICV_LEN
||
3303 icv_len
> MACSEC_STD_ICV_LEN
)
3310 if (data
[IFLA_MACSEC_ENCODING_SA
]) {
3311 if (nla_get_u8(data
[IFLA_MACSEC_ENCODING_SA
]) >= MACSEC_NUM_AN
)
3315 for (flag
= IFLA_MACSEC_ENCODING_SA
+ 1;
3316 flag
< IFLA_MACSEC_VALIDATION
;
3319 if (nla_get_u8(data
[flag
]) > 1)
3324 es
= data
[IFLA_MACSEC_ES
] ? nla_get_u8(data
[IFLA_MACSEC_ES
]) : false;
3325 sci
= data
[IFLA_MACSEC_INC_SCI
] ? nla_get_u8(data
[IFLA_MACSEC_INC_SCI
]) : false;
3326 scb
= data
[IFLA_MACSEC_SCB
] ? nla_get_u8(data
[IFLA_MACSEC_SCB
]) : false;
3328 if ((sci
&& (scb
|| es
)) || (scb
&& es
))
3331 if (data
[IFLA_MACSEC_VALIDATION
] &&
3332 nla_get_u8(data
[IFLA_MACSEC_VALIDATION
]) > MACSEC_VALIDATE_MAX
)
3335 if ((data
[IFLA_MACSEC_REPLAY_PROTECT
] &&
3336 nla_get_u8(data
[IFLA_MACSEC_REPLAY_PROTECT
])) &&
3337 !data
[IFLA_MACSEC_WINDOW
])
3343 static struct net
*macsec_get_link_net(const struct net_device
*dev
)
3345 return dev_net(macsec_priv(dev
)->real_dev
);
3348 static size_t macsec_get_size(const struct net_device
*dev
)
3350 return nla_total_size_64bit(8) + /* IFLA_MACSEC_SCI */
3351 nla_total_size(1) + /* IFLA_MACSEC_ICV_LEN */
3352 nla_total_size_64bit(8) + /* IFLA_MACSEC_CIPHER_SUITE */
3353 nla_total_size(4) + /* IFLA_MACSEC_WINDOW */
3354 nla_total_size(1) + /* IFLA_MACSEC_ENCODING_SA */
3355 nla_total_size(1) + /* IFLA_MACSEC_ENCRYPT */
3356 nla_total_size(1) + /* IFLA_MACSEC_PROTECT */
3357 nla_total_size(1) + /* IFLA_MACSEC_INC_SCI */
3358 nla_total_size(1) + /* IFLA_MACSEC_ES */
3359 nla_total_size(1) + /* IFLA_MACSEC_SCB */
3360 nla_total_size(1) + /* IFLA_MACSEC_REPLAY_PROTECT */
3361 nla_total_size(1) + /* IFLA_MACSEC_VALIDATION */
3365 static int macsec_fill_info(struct sk_buff
*skb
,
3366 const struct net_device
*dev
)
3368 struct macsec_secy
*secy
= &macsec_priv(dev
)->secy
;
3369 struct macsec_tx_sc
*tx_sc
= &secy
->tx_sc
;
3371 if (nla_put_sci(skb
, IFLA_MACSEC_SCI
, secy
->sci
,
3373 nla_put_u8(skb
, IFLA_MACSEC_ICV_LEN
, secy
->icv_len
) ||
3374 nla_put_u64_64bit(skb
, IFLA_MACSEC_CIPHER_SUITE
,
3375 MACSEC_DEFAULT_CIPHER_ID
, IFLA_MACSEC_PAD
) ||
3376 nla_put_u8(skb
, IFLA_MACSEC_ENCODING_SA
, tx_sc
->encoding_sa
) ||
3377 nla_put_u8(skb
, IFLA_MACSEC_ENCRYPT
, tx_sc
->encrypt
) ||
3378 nla_put_u8(skb
, IFLA_MACSEC_PROTECT
, secy
->protect_frames
) ||
3379 nla_put_u8(skb
, IFLA_MACSEC_INC_SCI
, tx_sc
->send_sci
) ||
3380 nla_put_u8(skb
, IFLA_MACSEC_ES
, tx_sc
->end_station
) ||
3381 nla_put_u8(skb
, IFLA_MACSEC_SCB
, tx_sc
->scb
) ||
3382 nla_put_u8(skb
, IFLA_MACSEC_REPLAY_PROTECT
, secy
->replay_protect
) ||
3383 nla_put_u8(skb
, IFLA_MACSEC_VALIDATION
, secy
->validate_frames
) ||
3385 goto nla_put_failure
;
3387 if (secy
->replay_protect
) {
3388 if (nla_put_u32(skb
, IFLA_MACSEC_WINDOW
, secy
->replay_window
))
3389 goto nla_put_failure
;
3398 static struct rtnl_link_ops macsec_link_ops __read_mostly
= {
3400 .priv_size
= sizeof(struct macsec_dev
),
3401 .maxtype
= IFLA_MACSEC_MAX
,
3402 .policy
= macsec_rtnl_policy
,
3403 .setup
= macsec_setup
,
3404 .validate
= macsec_validate_attr
,
3405 .newlink
= macsec_newlink
,
3406 .changelink
= macsec_changelink
,
3407 .dellink
= macsec_dellink
,
3408 .get_size
= macsec_get_size
,
3409 .fill_info
= macsec_fill_info
,
3410 .get_link_net
= macsec_get_link_net
,
3413 static bool is_macsec_master(struct net_device
*dev
)
3415 return rcu_access_pointer(dev
->rx_handler
) == macsec_handle_frame
;
3418 static int macsec_notify(struct notifier_block
*this, unsigned long event
,
3421 struct net_device
*real_dev
= netdev_notifier_info_to_dev(ptr
);
3424 if (!is_macsec_master(real_dev
))
3428 case NETDEV_UNREGISTER
: {
3429 struct macsec_dev
*m
, *n
;
3430 struct macsec_rxh_data
*rxd
;
3432 rxd
= macsec_data_rtnl(real_dev
);
3433 list_for_each_entry_safe(m
, n
, &rxd
->secys
, secys
) {
3434 macsec_common_dellink(m
->secy
.netdev
, &head
);
3437 netdev_rx_handler_unregister(real_dev
);
3440 unregister_netdevice_many(&head
);
3443 case NETDEV_CHANGEMTU
: {
3444 struct macsec_dev
*m
;
3445 struct macsec_rxh_data
*rxd
;
3447 rxd
= macsec_data_rtnl(real_dev
);
3448 list_for_each_entry(m
, &rxd
->secys
, secys
) {
3449 struct net_device
*dev
= m
->secy
.netdev
;
3450 unsigned int mtu
= real_dev
->mtu
- (m
->secy
.icv_len
+
3451 macsec_extra_len(true));
3454 dev_set_mtu(dev
, mtu
);
3462 static struct notifier_block macsec_notifier
= {
3463 .notifier_call
= macsec_notify
,
3466 static int __init
macsec_init(void)
3470 pr_info("MACsec IEEE 802.1AE\n");
3471 err
= register_netdevice_notifier(&macsec_notifier
);
3475 err
= rtnl_link_register(&macsec_link_ops
);
3479 err
= genl_register_family(&macsec_fam
);
3486 rtnl_link_unregister(&macsec_link_ops
);
3488 unregister_netdevice_notifier(&macsec_notifier
);
3492 static void __exit
macsec_exit(void)
3494 genl_unregister_family(&macsec_fam
);
3495 rtnl_link_unregister(&macsec_link_ops
);
3496 unregister_netdevice_notifier(&macsec_notifier
);
3500 module_init(macsec_init
);
3501 module_exit(macsec_exit
);
3503 MODULE_ALIAS_RTNL_LINK("macsec");
3505 MODULE_DESCRIPTION("MACsec IEEE 802.1AE");
3506 MODULE_LICENSE("GPL v2");