2 * Copyright (c) 2016-2017, Mellanox Technologies. All rights reserved.
3 * Copyright (c) 2016-2017, Dave Watson <davejwatson@fb.com>. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/module.h>
37 #include <net/inet_common.h>
38 #include <linux/highmem.h>
39 #include <linux/netdevice.h>
40 #include <linux/sched/signal.h>
41 #include <linux/inetdevice.h>
42 #include <linux/inet_diag.h>
46 MODULE_AUTHOR("Mellanox Technologies");
47 MODULE_DESCRIPTION("Transport Layer Security Support");
48 MODULE_LICENSE("Dual BSD/GPL");
49 MODULE_ALIAS_TCP_ULP("tls");
57 static struct proto *saved_tcpv6_prot;
58 static DEFINE_MUTEX(tcpv6_prot_mutex);
59 static struct proto *saved_tcpv4_prot;
60 static DEFINE_MUTEX(tcpv4_prot_mutex);
61 static LIST_HEAD(device_list);
62 static DEFINE_SPINLOCK(device_spinlock);
63 static struct proto tls_prots[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG];
64 static struct proto_ops tls_sw_proto_ops;
65 static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG],
68 static void update_sk_prot(struct sock *sk, struct tls_context *ctx)
70 int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4;
72 sk->sk_prot = &tls_prots[ip_ver][ctx->tx_conf][ctx->rx_conf];
75 int wait_on_pending_writer(struct sock *sk, long *timeo)
78 DEFINE_WAIT_FUNC(wait, woken_wake_function);
80 add_wait_queue(sk_sleep(sk), &wait);
87 if (signal_pending(current)) {
88 rc = sock_intr_errno(*timeo);
92 if (sk_wait_event(sk, timeo, !sk->sk_write_pending, &wait))
95 remove_wait_queue(sk_sleep(sk), &wait);
99 int tls_push_sg(struct sock *sk,
100 struct tls_context *ctx,
101 struct scatterlist *sg,
105 int sendpage_flags = flags | MSG_SENDPAGE_NOTLAST;
109 int offset = first_offset;
111 size = sg->length - offset;
112 offset += sg->offset;
114 ctx->in_tcp_sendpages = true;
117 sendpage_flags = flags;
119 /* is sending application-limited? */
120 tcp_rate_check_app_limited(sk);
123 ret = do_tcp_sendpages(sk, p, offset, size, sendpage_flags);
132 offset -= sg->offset;
133 ctx->partially_sent_offset = offset;
134 ctx->partially_sent_record = (void *)sg;
135 ctx->in_tcp_sendpages = false;
140 sk_mem_uncharge(sk, sg->length);
149 ctx->in_tcp_sendpages = false;
154 static int tls_handle_open_record(struct sock *sk, int flags)
156 struct tls_context *ctx = tls_get_ctx(sk);
158 if (tls_is_pending_open_record(ctx))
159 return ctx->push_pending_record(sk, flags);
164 int tls_proccess_cmsg(struct sock *sk, struct msghdr *msg,
165 unsigned char *record_type)
167 struct cmsghdr *cmsg;
170 for_each_cmsghdr(cmsg, msg) {
171 if (!CMSG_OK(msg, cmsg))
173 if (cmsg->cmsg_level != SOL_TLS)
176 switch (cmsg->cmsg_type) {
177 case TLS_SET_RECORD_TYPE:
178 if (cmsg->cmsg_len < CMSG_LEN(sizeof(*record_type)))
181 if (msg->msg_flags & MSG_MORE)
184 rc = tls_handle_open_record(sk, msg->msg_flags);
188 *record_type = *(unsigned char *)CMSG_DATA(cmsg);
199 int tls_push_partial_record(struct sock *sk, struct tls_context *ctx,
202 struct scatterlist *sg;
205 sg = ctx->partially_sent_record;
206 offset = ctx->partially_sent_offset;
208 ctx->partially_sent_record = NULL;
209 return tls_push_sg(sk, ctx, sg, offset, flags);
212 void tls_free_partial_record(struct sock *sk, struct tls_context *ctx)
214 struct scatterlist *sg;
216 for (sg = ctx->partially_sent_record; sg; sg = sg_next(sg)) {
217 put_page(sg_page(sg));
218 sk_mem_uncharge(sk, sg->length);
220 ctx->partially_sent_record = NULL;
223 static void tls_write_space(struct sock *sk)
225 struct tls_context *ctx = tls_get_ctx(sk);
227 /* If in_tcp_sendpages call lower protocol write space handler
228 * to ensure we wake up any waiting operations there. For example
229 * if do_tcp_sendpages where to call sk_wait_event.
231 if (ctx->in_tcp_sendpages) {
232 ctx->sk_write_space(sk);
236 #ifdef CONFIG_TLS_DEVICE
237 if (ctx->tx_conf == TLS_HW)
238 tls_device_write_space(sk, ctx);
241 tls_sw_write_space(sk, ctx);
243 ctx->sk_write_space(sk);
247 * tls_ctx_free() - free TLS ULP context
248 * @sk: socket to with @ctx is attached
249 * @ctx: TLS context structure
251 * Free TLS context. If @sk is %NULL caller guarantees that the socket
252 * to which @ctx was attached has no outstanding references.
254 void tls_ctx_free(struct sock *sk, struct tls_context *ctx)
259 memzero_explicit(&ctx->crypto_send, sizeof(ctx->crypto_send));
260 memzero_explicit(&ctx->crypto_recv, sizeof(ctx->crypto_recv));
261 mutex_destroy(&ctx->tx_lock);
269 static void tls_sk_proto_cleanup(struct sock *sk,
270 struct tls_context *ctx, long timeo)
272 if (unlikely(sk->sk_write_pending) &&
273 !wait_on_pending_writer(sk, &timeo))
274 tls_handle_open_record(sk, 0);
276 /* We need these for tls_sw_fallback handling of other packets */
277 if (ctx->tx_conf == TLS_SW) {
278 kfree(ctx->tx.rec_seq);
280 tls_sw_release_resources_tx(sk);
281 } else if (ctx->tx_conf == TLS_HW) {
282 tls_device_free_resources_tx(sk);
285 if (ctx->rx_conf == TLS_SW)
286 tls_sw_release_resources_rx(sk);
287 else if (ctx->rx_conf == TLS_HW)
288 tls_device_offload_cleanup_rx(sk);
291 static void tls_sk_proto_close(struct sock *sk, long timeout)
293 struct inet_connection_sock *icsk = inet_csk(sk);
294 struct tls_context *ctx = tls_get_ctx(sk);
295 long timeo = sock_sndtimeo(sk, 0);
298 if (ctx->tx_conf == TLS_SW)
299 tls_sw_cancel_work_tx(ctx);
302 free_ctx = ctx->tx_conf != TLS_HW && ctx->rx_conf != TLS_HW;
304 if (ctx->tx_conf != TLS_BASE || ctx->rx_conf != TLS_BASE)
305 tls_sk_proto_cleanup(sk, ctx, timeo);
307 write_lock_bh(&sk->sk_callback_lock);
309 rcu_assign_pointer(icsk->icsk_ulp_data, NULL);
310 sk->sk_prot = ctx->sk_proto;
311 if (sk->sk_write_space == tls_write_space)
312 sk->sk_write_space = ctx->sk_write_space;
313 write_unlock_bh(&sk->sk_callback_lock);
315 if (ctx->tx_conf == TLS_SW)
316 tls_sw_free_ctx_tx(ctx);
317 if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW)
318 tls_sw_strparser_done(ctx);
319 if (ctx->rx_conf == TLS_SW)
320 tls_sw_free_ctx_rx(ctx);
321 ctx->sk_proto->close(sk, timeout);
324 tls_ctx_free(sk, ctx);
327 static int do_tls_getsockopt_tx(struct sock *sk, char __user *optval,
331 struct tls_context *ctx = tls_get_ctx(sk);
332 struct tls_crypto_info *crypto_info;
335 if (get_user(len, optlen))
338 if (!optval || (len < sizeof(*crypto_info))) {
348 /* get user crypto info */
349 crypto_info = &ctx->crypto_send.info;
351 if (!TLS_CRYPTO_INFO_READY(crypto_info)) {
356 if (len == sizeof(*crypto_info)) {
357 if (copy_to_user(optval, crypto_info, sizeof(*crypto_info)))
362 switch (crypto_info->cipher_type) {
363 case TLS_CIPHER_AES_GCM_128: {
364 struct tls12_crypto_info_aes_gcm_128 *
365 crypto_info_aes_gcm_128 =
366 container_of(crypto_info,
367 struct tls12_crypto_info_aes_gcm_128,
370 if (len != sizeof(*crypto_info_aes_gcm_128)) {
375 memcpy(crypto_info_aes_gcm_128->iv,
376 ctx->tx.iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE,
377 TLS_CIPHER_AES_GCM_128_IV_SIZE);
378 memcpy(crypto_info_aes_gcm_128->rec_seq, ctx->tx.rec_seq,
379 TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE);
381 if (copy_to_user(optval,
382 crypto_info_aes_gcm_128,
383 sizeof(*crypto_info_aes_gcm_128)))
387 case TLS_CIPHER_AES_GCM_256: {
388 struct tls12_crypto_info_aes_gcm_256 *
389 crypto_info_aes_gcm_256 =
390 container_of(crypto_info,
391 struct tls12_crypto_info_aes_gcm_256,
394 if (len != sizeof(*crypto_info_aes_gcm_256)) {
399 memcpy(crypto_info_aes_gcm_256->iv,
400 ctx->tx.iv + TLS_CIPHER_AES_GCM_256_SALT_SIZE,
401 TLS_CIPHER_AES_GCM_256_IV_SIZE);
402 memcpy(crypto_info_aes_gcm_256->rec_seq, ctx->tx.rec_seq,
403 TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE);
405 if (copy_to_user(optval,
406 crypto_info_aes_gcm_256,
407 sizeof(*crypto_info_aes_gcm_256)))
419 static int do_tls_getsockopt(struct sock *sk, int optname,
420 char __user *optval, int __user *optlen)
426 rc = do_tls_getsockopt_tx(sk, optval, optlen);
435 static int tls_getsockopt(struct sock *sk, int level, int optname,
436 char __user *optval, int __user *optlen)
438 struct tls_context *ctx = tls_get_ctx(sk);
440 if (level != SOL_TLS)
441 return ctx->sk_proto->getsockopt(sk, level,
442 optname, optval, optlen);
444 return do_tls_getsockopt(sk, optname, optval, optlen);
447 static int do_tls_setsockopt_conf(struct sock *sk, char __user *optval,
448 unsigned int optlen, int tx)
450 struct tls_crypto_info *crypto_info;
451 struct tls_crypto_info *alt_crypto_info;
452 struct tls_context *ctx = tls_get_ctx(sk);
457 if (!optval || (optlen < sizeof(*crypto_info))) {
463 crypto_info = &ctx->crypto_send.info;
464 alt_crypto_info = &ctx->crypto_recv.info;
466 crypto_info = &ctx->crypto_recv.info;
467 alt_crypto_info = &ctx->crypto_send.info;
470 /* Currently we don't support set crypto info more than one time */
471 if (TLS_CRYPTO_INFO_READY(crypto_info)) {
476 rc = copy_from_user(crypto_info, optval, sizeof(*crypto_info));
479 goto err_crypto_info;
483 if (crypto_info->version != TLS_1_2_VERSION &&
484 crypto_info->version != TLS_1_3_VERSION) {
486 goto err_crypto_info;
489 /* Ensure that TLS version and ciphers are same in both directions */
490 if (TLS_CRYPTO_INFO_READY(alt_crypto_info)) {
491 if (alt_crypto_info->version != crypto_info->version ||
492 alt_crypto_info->cipher_type != crypto_info->cipher_type) {
494 goto err_crypto_info;
498 switch (crypto_info->cipher_type) {
499 case TLS_CIPHER_AES_GCM_128:
500 optsize = sizeof(struct tls12_crypto_info_aes_gcm_128);
502 case TLS_CIPHER_AES_GCM_256: {
503 optsize = sizeof(struct tls12_crypto_info_aes_gcm_256);
506 case TLS_CIPHER_AES_CCM_128:
507 optsize = sizeof(struct tls12_crypto_info_aes_ccm_128);
511 goto err_crypto_info;
514 if (optlen != optsize) {
516 goto err_crypto_info;
519 rc = copy_from_user(crypto_info + 1, optval + sizeof(*crypto_info),
520 optlen - sizeof(*crypto_info));
523 goto err_crypto_info;
527 rc = tls_set_device_offload(sk, ctx);
530 rc = tls_set_sw_offload(sk, ctx, 1);
532 goto err_crypto_info;
536 rc = tls_set_device_offload_rx(sk, ctx);
539 rc = tls_set_sw_offload(sk, ctx, 0);
541 goto err_crypto_info;
544 tls_sw_strparser_arm(sk, ctx);
551 update_sk_prot(sk, ctx);
553 ctx->sk_write_space = sk->sk_write_space;
554 sk->sk_write_space = tls_write_space;
556 sk->sk_socket->ops = &tls_sw_proto_ops;
561 memzero_explicit(crypto_info, sizeof(union tls_crypto_context));
566 static int do_tls_setsockopt(struct sock *sk, int optname,
567 char __user *optval, unsigned int optlen)
575 rc = do_tls_setsockopt_conf(sk, optval, optlen,
586 static int tls_setsockopt(struct sock *sk, int level, int optname,
587 char __user *optval, unsigned int optlen)
589 struct tls_context *ctx = tls_get_ctx(sk);
591 if (level != SOL_TLS)
592 return ctx->sk_proto->setsockopt(sk, level, optname, optval,
595 return do_tls_setsockopt(sk, optname, optval, optlen);
598 static struct tls_context *create_ctx(struct sock *sk)
600 struct inet_connection_sock *icsk = inet_csk(sk);
601 struct tls_context *ctx;
603 ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC);
607 mutex_init(&ctx->tx_lock);
608 rcu_assign_pointer(icsk->icsk_ulp_data, ctx);
609 ctx->sk_proto = sk->sk_prot;
613 static void tls_build_proto(struct sock *sk)
615 int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4;
617 /* Build IPv6 TLS whenever the address of tcpv6 _prot changes */
618 if (ip_ver == TLSV6 &&
619 unlikely(sk->sk_prot != smp_load_acquire(&saved_tcpv6_prot))) {
620 mutex_lock(&tcpv6_prot_mutex);
621 if (likely(sk->sk_prot != saved_tcpv6_prot)) {
622 build_protos(tls_prots[TLSV6], sk->sk_prot);
623 smp_store_release(&saved_tcpv6_prot, sk->sk_prot);
625 mutex_unlock(&tcpv6_prot_mutex);
628 if (ip_ver == TLSV4 &&
629 unlikely(sk->sk_prot != smp_load_acquire(&saved_tcpv4_prot))) {
630 mutex_lock(&tcpv4_prot_mutex);
631 if (likely(sk->sk_prot != saved_tcpv4_prot)) {
632 build_protos(tls_prots[TLSV4], sk->sk_prot);
633 smp_store_release(&saved_tcpv4_prot, sk->sk_prot);
635 mutex_unlock(&tcpv4_prot_mutex);
639 static void tls_hw_sk_destruct(struct sock *sk)
641 struct tls_context *ctx = tls_get_ctx(sk);
642 struct inet_connection_sock *icsk = inet_csk(sk);
644 ctx->sk_destruct(sk);
646 rcu_assign_pointer(icsk->icsk_ulp_data, NULL);
647 tls_ctx_free(sk, ctx);
650 static int tls_hw_prot(struct sock *sk)
652 struct tls_context *ctx;
653 struct tls_device *dev;
656 spin_lock_bh(&device_spinlock);
657 list_for_each_entry(dev, &device_list, dev_list) {
658 if (dev->feature && dev->feature(dev)) {
659 ctx = create_ctx(sk);
663 spin_unlock_bh(&device_spinlock);
665 ctx->sk_destruct = sk->sk_destruct;
666 sk->sk_destruct = tls_hw_sk_destruct;
667 ctx->rx_conf = TLS_HW_RECORD;
668 ctx->tx_conf = TLS_HW_RECORD;
669 update_sk_prot(sk, ctx);
670 spin_lock_bh(&device_spinlock);
676 spin_unlock_bh(&device_spinlock);
680 static void tls_hw_unhash(struct sock *sk)
682 struct tls_context *ctx = tls_get_ctx(sk);
683 struct tls_device *dev;
685 spin_lock_bh(&device_spinlock);
686 list_for_each_entry(dev, &device_list, dev_list) {
688 kref_get(&dev->kref);
689 spin_unlock_bh(&device_spinlock);
690 dev->unhash(dev, sk);
691 kref_put(&dev->kref, dev->release);
692 spin_lock_bh(&device_spinlock);
695 spin_unlock_bh(&device_spinlock);
696 ctx->sk_proto->unhash(sk);
699 static int tls_hw_hash(struct sock *sk)
701 struct tls_context *ctx = tls_get_ctx(sk);
702 struct tls_device *dev;
705 err = ctx->sk_proto->hash(sk);
706 spin_lock_bh(&device_spinlock);
707 list_for_each_entry(dev, &device_list, dev_list) {
709 kref_get(&dev->kref);
710 spin_unlock_bh(&device_spinlock);
711 err |= dev->hash(dev, sk);
712 kref_put(&dev->kref, dev->release);
713 spin_lock_bh(&device_spinlock);
716 spin_unlock_bh(&device_spinlock);
723 static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG],
726 prot[TLS_BASE][TLS_BASE] = *base;
727 prot[TLS_BASE][TLS_BASE].setsockopt = tls_setsockopt;
728 prot[TLS_BASE][TLS_BASE].getsockopt = tls_getsockopt;
729 prot[TLS_BASE][TLS_BASE].close = tls_sk_proto_close;
731 prot[TLS_SW][TLS_BASE] = prot[TLS_BASE][TLS_BASE];
732 prot[TLS_SW][TLS_BASE].sendmsg = tls_sw_sendmsg;
733 prot[TLS_SW][TLS_BASE].sendpage = tls_sw_sendpage;
735 prot[TLS_BASE][TLS_SW] = prot[TLS_BASE][TLS_BASE];
736 prot[TLS_BASE][TLS_SW].recvmsg = tls_sw_recvmsg;
737 prot[TLS_BASE][TLS_SW].stream_memory_read = tls_sw_stream_read;
738 prot[TLS_BASE][TLS_SW].close = tls_sk_proto_close;
740 prot[TLS_SW][TLS_SW] = prot[TLS_SW][TLS_BASE];
741 prot[TLS_SW][TLS_SW].recvmsg = tls_sw_recvmsg;
742 prot[TLS_SW][TLS_SW].stream_memory_read = tls_sw_stream_read;
743 prot[TLS_SW][TLS_SW].close = tls_sk_proto_close;
745 #ifdef CONFIG_TLS_DEVICE
746 prot[TLS_HW][TLS_BASE] = prot[TLS_BASE][TLS_BASE];
747 prot[TLS_HW][TLS_BASE].sendmsg = tls_device_sendmsg;
748 prot[TLS_HW][TLS_BASE].sendpage = tls_device_sendpage;
750 prot[TLS_HW][TLS_SW] = prot[TLS_BASE][TLS_SW];
751 prot[TLS_HW][TLS_SW].sendmsg = tls_device_sendmsg;
752 prot[TLS_HW][TLS_SW].sendpage = tls_device_sendpage;
754 prot[TLS_BASE][TLS_HW] = prot[TLS_BASE][TLS_SW];
756 prot[TLS_SW][TLS_HW] = prot[TLS_SW][TLS_SW];
758 prot[TLS_HW][TLS_HW] = prot[TLS_HW][TLS_SW];
761 prot[TLS_HW_RECORD][TLS_HW_RECORD] = *base;
762 prot[TLS_HW_RECORD][TLS_HW_RECORD].hash = tls_hw_hash;
763 prot[TLS_HW_RECORD][TLS_HW_RECORD].unhash = tls_hw_unhash;
766 static int tls_init(struct sock *sk)
768 struct tls_context *ctx;
774 /* The TLS ulp is currently supported only for TCP sockets
775 * in ESTABLISHED state.
776 * Supporting sockets in LISTEN state will require us
777 * to modify the accept implementation to clone rather then
778 * share the ulp context.
780 if (sk->sk_state != TCP_ESTABLISHED)
785 /* allocate tls context */
786 write_lock_bh(&sk->sk_callback_lock);
787 ctx = create_ctx(sk);
793 ctx->tx_conf = TLS_BASE;
794 ctx->rx_conf = TLS_BASE;
795 update_sk_prot(sk, ctx);
797 write_unlock_bh(&sk->sk_callback_lock);
801 static void tls_update(struct sock *sk, struct proto *p,
802 void (*write_space)(struct sock *sk))
804 struct tls_context *ctx;
806 ctx = tls_get_ctx(sk);
808 ctx->sk_write_space = write_space;
812 sk->sk_write_space = write_space;
816 static int tls_get_info(const struct sock *sk, struct sk_buff *skb)
818 u16 version, cipher_type;
819 struct tls_context *ctx;
820 struct nlattr *start;
823 start = nla_nest_start_noflag(skb, INET_ULP_INFO_TLS);
828 ctx = rcu_dereference(inet_csk(sk)->icsk_ulp_data);
833 version = ctx->prot_info.version;
835 err = nla_put_u16(skb, TLS_INFO_VERSION, version);
839 cipher_type = ctx->prot_info.cipher_type;
841 err = nla_put_u16(skb, TLS_INFO_CIPHER, cipher_type);
845 err = nla_put_u16(skb, TLS_INFO_TXCONF, tls_user_config(ctx, true));
849 err = nla_put_u16(skb, TLS_INFO_RXCONF, tls_user_config(ctx, false));
854 nla_nest_end(skb, start);
859 nla_nest_cancel(skb, start);
863 static size_t tls_get_info_size(const struct sock *sk)
867 size += nla_total_size(0) + /* INET_ULP_INFO_TLS */
868 nla_total_size(sizeof(u16)) + /* TLS_INFO_VERSION */
869 nla_total_size(sizeof(u16)) + /* TLS_INFO_CIPHER */
870 nla_total_size(sizeof(u16)) + /* TLS_INFO_RXCONF */
871 nla_total_size(sizeof(u16)) + /* TLS_INFO_TXCONF */
877 void tls_register_device(struct tls_device *device)
879 spin_lock_bh(&device_spinlock);
880 list_add_tail(&device->dev_list, &device_list);
881 spin_unlock_bh(&device_spinlock);
883 EXPORT_SYMBOL(tls_register_device);
885 void tls_unregister_device(struct tls_device *device)
887 spin_lock_bh(&device_spinlock);
888 list_del(&device->dev_list);
889 spin_unlock_bh(&device_spinlock);
891 EXPORT_SYMBOL(tls_unregister_device);
893 static struct tcp_ulp_ops tcp_tls_ulp_ops __read_mostly = {
895 .owner = THIS_MODULE,
897 .update = tls_update,
898 .get_info = tls_get_info,
899 .get_info_size = tls_get_info_size,
902 static int __init tls_register(void)
904 tls_sw_proto_ops = inet_stream_ops;
905 tls_sw_proto_ops.splice_read = tls_sw_splice_read;
906 tls_sw_proto_ops.sendpage_locked = tls_sw_sendpage_locked,
909 tcp_register_ulp(&tcp_tls_ulp_ops);
914 static void __exit tls_unregister(void)
916 tcp_unregister_ulp(&tcp_tls_ulp_ops);
917 tls_device_cleanup();
920 module_init(tls_register);
921 module_exit(tls_unregister);