13c4d7559SDave Watson /* 23c4d7559SDave Watson * Copyright (c) 2016-2017, Mellanox Technologies. All rights reserved. 33c4d7559SDave Watson * Copyright (c) 2016-2017, Dave Watson <davejwatson@fb.com>. All rights reserved. 43c4d7559SDave Watson * 53c4d7559SDave Watson * This software is available to you under a choice of one of two 63c4d7559SDave Watson * licenses. You may choose to be licensed under the terms of the GNU 73c4d7559SDave Watson * General Public License (GPL) Version 2, available from the file 83c4d7559SDave Watson * COPYING in the main directory of this source tree, or the 93c4d7559SDave Watson * OpenIB.org BSD license below: 103c4d7559SDave Watson * 113c4d7559SDave Watson * Redistribution and use in source and binary forms, with or 123c4d7559SDave Watson * without modification, are permitted provided that the following 133c4d7559SDave Watson * conditions are met: 143c4d7559SDave Watson * 153c4d7559SDave Watson * - Redistributions of source code must retain the above 163c4d7559SDave Watson * copyright notice, this list of conditions and the following 173c4d7559SDave Watson * disclaimer. 183c4d7559SDave Watson * 193c4d7559SDave Watson * - Redistributions in binary form must reproduce the above 203c4d7559SDave Watson * copyright notice, this list of conditions and the following 213c4d7559SDave Watson * disclaimer in the documentation and/or other materials 223c4d7559SDave Watson * provided with the distribution. 233c4d7559SDave Watson * 243c4d7559SDave Watson * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 253c4d7559SDave Watson * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 263c4d7559SDave Watson * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 273c4d7559SDave Watson * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 283c4d7559SDave Watson * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 293c4d7559SDave Watson * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 303c4d7559SDave Watson * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 313c4d7559SDave Watson * SOFTWARE. 323c4d7559SDave Watson */ 333c4d7559SDave Watson 343c4d7559SDave Watson #include <linux/module.h> 353c4d7559SDave Watson 363c4d7559SDave Watson #include <net/tcp.h> 373c4d7559SDave Watson #include <net/inet_common.h> 383c4d7559SDave Watson #include <linux/highmem.h> 393c4d7559SDave Watson #include <linux/netdevice.h> 403c4d7559SDave Watson #include <linux/sched/signal.h> 41dd0bed16SAtul Gupta #include <linux/inetdevice.h> 423c4d7559SDave Watson 433c4d7559SDave Watson #include <net/tls.h> 443c4d7559SDave Watson 453c4d7559SDave Watson MODULE_AUTHOR("Mellanox Technologies"); 463c4d7559SDave Watson MODULE_DESCRIPTION("Transport Layer Security Support"); 473c4d7559SDave Watson MODULE_LICENSE("Dual BSD/GPL"); 48037b0b86SDaniel Borkmann MODULE_ALIAS_TCP_ULP("tls"); 493c4d7559SDave Watson 506d88207fSIlya Lesokhin enum { 51c113187dSBoris Pismenny TLSV4, 52c113187dSBoris Pismenny TLSV6, 53c113187dSBoris Pismenny TLS_NUM_PROTS, 54c113187dSBoris Pismenny }; 556d88207fSIlya Lesokhin 56c113187dSBoris Pismenny static struct proto *saved_tcpv6_prot; 57c113187dSBoris Pismenny static DEFINE_MUTEX(tcpv6_prot_mutex); 5828cb6f1eSJohn Fastabend static struct proto *saved_tcpv4_prot; 5928cb6f1eSJohn Fastabend static DEFINE_MUTEX(tcpv4_prot_mutex); 60dd0bed16SAtul Gupta static LIST_HEAD(device_list); 61df9d4a17SAtul Gupta static DEFINE_SPINLOCK(device_spinlock); 62f66de3eeSBoris Pismenny static struct proto tls_prots[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG]; 63c46234ebSDave Watson static struct proto_ops tls_sw_proto_ops; 6463a6b3feSAtul Gupta static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 6563a6b3feSAtul Gupta struct proto *base); 666d88207fSIlya Lesokhin 67f66de3eeSBoris Pismenny static void update_sk_prot(struct sock *sk, struct tls_context *ctx) 686d88207fSIlya Lesokhin { 69c113187dSBoris Pismenny int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 70c113187dSBoris Pismenny 71f66de3eeSBoris Pismenny sk->sk_prot = &tls_prots[ip_ver][ctx->tx_conf][ctx->rx_conf]; 726d88207fSIlya Lesokhin } 733c4d7559SDave Watson 743c4d7559SDave Watson int wait_on_pending_writer(struct sock *sk, long *timeo) 753c4d7559SDave Watson { 763c4d7559SDave Watson int rc = 0; 773c4d7559SDave Watson DEFINE_WAIT_FUNC(wait, woken_wake_function); 783c4d7559SDave Watson 793c4d7559SDave Watson add_wait_queue(sk_sleep(sk), &wait); 803c4d7559SDave Watson while (1) { 813c4d7559SDave Watson if (!*timeo) { 823c4d7559SDave Watson rc = -EAGAIN; 833c4d7559SDave Watson break; 843c4d7559SDave Watson } 853c4d7559SDave Watson 863c4d7559SDave Watson if (signal_pending(current)) { 873c4d7559SDave Watson rc = sock_intr_errno(*timeo); 883c4d7559SDave Watson break; 893c4d7559SDave Watson } 903c4d7559SDave Watson 913c4d7559SDave Watson if (sk_wait_event(sk, timeo, !sk->sk_write_pending, &wait)) 923c4d7559SDave Watson break; 933c4d7559SDave Watson } 943c4d7559SDave Watson remove_wait_queue(sk_sleep(sk), &wait); 953c4d7559SDave Watson return rc; 963c4d7559SDave Watson } 973c4d7559SDave Watson 983c4d7559SDave Watson int tls_push_sg(struct sock *sk, 993c4d7559SDave Watson struct tls_context *ctx, 1003c4d7559SDave Watson struct scatterlist *sg, 1013c4d7559SDave Watson u16 first_offset, 1023c4d7559SDave Watson int flags) 1033c4d7559SDave Watson { 1043c4d7559SDave Watson int sendpage_flags = flags | MSG_SENDPAGE_NOTLAST; 1053c4d7559SDave Watson int ret = 0; 1063c4d7559SDave Watson struct page *p; 1073c4d7559SDave Watson size_t size; 1083c4d7559SDave Watson int offset = first_offset; 1093c4d7559SDave Watson 1103c4d7559SDave Watson size = sg->length - offset; 1113c4d7559SDave Watson offset += sg->offset; 1123c4d7559SDave Watson 113c212d2c7SDave Watson ctx->in_tcp_sendpages = true; 1143c4d7559SDave Watson while (1) { 1153c4d7559SDave Watson if (sg_is_last(sg)) 1163c4d7559SDave Watson sendpage_flags = flags; 1173c4d7559SDave Watson 1183c4d7559SDave Watson /* is sending application-limited? */ 1193c4d7559SDave Watson tcp_rate_check_app_limited(sk); 1203c4d7559SDave Watson p = sg_page(sg); 1213c4d7559SDave Watson retry: 1223c4d7559SDave Watson ret = do_tcp_sendpages(sk, p, offset, size, sendpage_flags); 1233c4d7559SDave Watson 1243c4d7559SDave Watson if (ret != size) { 1253c4d7559SDave Watson if (ret > 0) { 1263c4d7559SDave Watson offset += ret; 1273c4d7559SDave Watson size -= ret; 1283c4d7559SDave Watson goto retry; 1293c4d7559SDave Watson } 1303c4d7559SDave Watson 1313c4d7559SDave Watson offset -= sg->offset; 1323c4d7559SDave Watson ctx->partially_sent_offset = offset; 1333c4d7559SDave Watson ctx->partially_sent_record = (void *)sg; 134080324c3SAndre Tomt ctx->in_tcp_sendpages = false; 1353c4d7559SDave Watson return ret; 1363c4d7559SDave Watson } 1373c4d7559SDave Watson 1383c4d7559SDave Watson put_page(p); 1393c4d7559SDave Watson sk_mem_uncharge(sk, sg->length); 1403c4d7559SDave Watson sg = sg_next(sg); 1413c4d7559SDave Watson if (!sg) 1423c4d7559SDave Watson break; 1433c4d7559SDave Watson 1443c4d7559SDave Watson offset = sg->offset; 1453c4d7559SDave Watson size = sg->length; 1463c4d7559SDave Watson } 1473c4d7559SDave Watson 148c212d2c7SDave Watson ctx->in_tcp_sendpages = false; 149c212d2c7SDave Watson ctx->sk_write_space(sk); 1503c4d7559SDave Watson 1513c4d7559SDave Watson return 0; 1523c4d7559SDave Watson } 1533c4d7559SDave Watson 1543c4d7559SDave Watson static int tls_handle_open_record(struct sock *sk, int flags) 1553c4d7559SDave Watson { 1563c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 1573c4d7559SDave Watson 1583c4d7559SDave Watson if (tls_is_pending_open_record(ctx)) 1593c4d7559SDave Watson return ctx->push_pending_record(sk, flags); 1603c4d7559SDave Watson 1613c4d7559SDave Watson return 0; 1623c4d7559SDave Watson } 1633c4d7559SDave Watson 1643c4d7559SDave Watson int tls_proccess_cmsg(struct sock *sk, struct msghdr *msg, 1653c4d7559SDave Watson unsigned char *record_type) 1663c4d7559SDave Watson { 1673c4d7559SDave Watson struct cmsghdr *cmsg; 1683c4d7559SDave Watson int rc = -EINVAL; 1693c4d7559SDave Watson 1703c4d7559SDave Watson for_each_cmsghdr(cmsg, msg) { 1713c4d7559SDave Watson if (!CMSG_OK(msg, cmsg)) 1723c4d7559SDave Watson return -EINVAL; 1733c4d7559SDave Watson if (cmsg->cmsg_level != SOL_TLS) 1743c4d7559SDave Watson continue; 1753c4d7559SDave Watson 1763c4d7559SDave Watson switch (cmsg->cmsg_type) { 1773c4d7559SDave Watson case TLS_SET_RECORD_TYPE: 1783c4d7559SDave Watson if (cmsg->cmsg_len < CMSG_LEN(sizeof(*record_type))) 1793c4d7559SDave Watson return -EINVAL; 1803c4d7559SDave Watson 1813c4d7559SDave Watson if (msg->msg_flags & MSG_MORE) 1823c4d7559SDave Watson return -EINVAL; 1833c4d7559SDave Watson 1843c4d7559SDave Watson rc = tls_handle_open_record(sk, msg->msg_flags); 1853c4d7559SDave Watson if (rc) 1863c4d7559SDave Watson return rc; 1873c4d7559SDave Watson 1883c4d7559SDave Watson *record_type = *(unsigned char *)CMSG_DATA(cmsg); 1893c4d7559SDave Watson rc = 0; 1903c4d7559SDave Watson break; 1913c4d7559SDave Watson default: 1923c4d7559SDave Watson return -EINVAL; 1933c4d7559SDave Watson } 1943c4d7559SDave Watson } 1953c4d7559SDave Watson 1963c4d7559SDave Watson return rc; 1973c4d7559SDave Watson } 1983c4d7559SDave Watson 199a42055e8SVakul Garg int tls_push_partial_record(struct sock *sk, struct tls_context *ctx, 200a42055e8SVakul Garg int flags) 2013c4d7559SDave Watson { 2023c4d7559SDave Watson struct scatterlist *sg; 2033c4d7559SDave Watson u16 offset; 2043c4d7559SDave Watson 2053c4d7559SDave Watson sg = ctx->partially_sent_record; 2063c4d7559SDave Watson offset = ctx->partially_sent_offset; 2073c4d7559SDave Watson 2083c4d7559SDave Watson ctx->partially_sent_record = NULL; 2093c4d7559SDave Watson return tls_push_sg(sk, ctx, sg, offset, flags); 2103c4d7559SDave Watson } 2113c4d7559SDave Watson 212a42055e8SVakul Garg int tls_push_pending_closed_record(struct sock *sk, 213a42055e8SVakul Garg struct tls_context *tls_ctx, 214a42055e8SVakul Garg int flags, long *timeo) 215a42055e8SVakul Garg { 216a42055e8SVakul Garg struct tls_sw_context_tx *ctx = tls_sw_ctx_tx(tls_ctx); 217a42055e8SVakul Garg 218a42055e8SVakul Garg if (tls_is_partially_sent_record(tls_ctx) || 2199932a29aSVakul Garg !list_empty(&ctx->tx_list)) 220a42055e8SVakul Garg return tls_tx_records(sk, flags); 221a42055e8SVakul Garg else 222a42055e8SVakul Garg return tls_ctx->push_pending_record(sk, flags); 223a42055e8SVakul Garg } 224a42055e8SVakul Garg 2253c4d7559SDave Watson static void tls_write_space(struct sock *sk) 2263c4d7559SDave Watson { 2273c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 228a42055e8SVakul Garg struct tls_sw_context_tx *tx_ctx = tls_sw_ctx_tx(ctx); 2293c4d7559SDave Watson 23067db7cd2SJohn Fastabend /* If in_tcp_sendpages call lower protocol write space handler 23167db7cd2SJohn Fastabend * to ensure we wake up any waiting operations there. For example 23267db7cd2SJohn Fastabend * if do_tcp_sendpages where to call sk_wait_event. 23367db7cd2SJohn Fastabend */ 23467db7cd2SJohn Fastabend if (ctx->in_tcp_sendpages) { 23567db7cd2SJohn Fastabend ctx->sk_write_space(sk); 236c212d2c7SDave Watson return; 23767db7cd2SJohn Fastabend } 238c212d2c7SDave Watson 239a42055e8SVakul Garg /* Schedule the transmission if tx list is ready */ 2409932a29aSVakul Garg if (is_tx_ready(tx_ctx) && !sk->sk_write_pending) { 241a42055e8SVakul Garg /* Schedule the transmission */ 242a42055e8SVakul Garg if (!test_and_set_bit(BIT_TX_SCHEDULED, &tx_ctx->tx_bitmask)) 243a42055e8SVakul Garg schedule_delayed_work(&tx_ctx->tx_work.work, 0); 2443c4d7559SDave Watson } 2453c4d7559SDave Watson 2463c4d7559SDave Watson ctx->sk_write_space(sk); 2473c4d7559SDave Watson } 2483c4d7559SDave Watson 24986029d10SSabrina Dubroca static void tls_ctx_free(struct tls_context *ctx) 25086029d10SSabrina Dubroca { 25186029d10SSabrina Dubroca if (!ctx) 25286029d10SSabrina Dubroca return; 25386029d10SSabrina Dubroca 25486029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_send, sizeof(ctx->crypto_send)); 25586029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_recv, sizeof(ctx->crypto_recv)); 25686029d10SSabrina Dubroca kfree(ctx); 25786029d10SSabrina Dubroca } 25886029d10SSabrina Dubroca 2593c4d7559SDave Watson static void tls_sk_proto_close(struct sock *sk, long timeout) 2603c4d7559SDave Watson { 2613c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 2623c4d7559SDave Watson long timeo = sock_sndtimeo(sk, 0); 2633c4d7559SDave Watson void (*sk_proto_close)(struct sock *sk, long timeout); 26498f0a395SEric Dumazet bool free_ctx = false; 2653c4d7559SDave Watson 2663c4d7559SDave Watson lock_sock(sk); 267ff45d820SIlya Lesokhin sk_proto_close = ctx->sk_proto_close; 268ff45d820SIlya Lesokhin 26976f7164dSAtul Gupta if (ctx->tx_conf == TLS_HW_RECORD && ctx->rx_conf == TLS_HW_RECORD) 27076f7164dSAtul Gupta goto skip_tx_cleanup; 27176f7164dSAtul Gupta 27276f7164dSAtul Gupta if (ctx->tx_conf == TLS_BASE && ctx->rx_conf == TLS_BASE) { 27398f0a395SEric Dumazet free_ctx = true; 274ff45d820SIlya Lesokhin goto skip_tx_cleanup; 275ff45d820SIlya Lesokhin } 2763c4d7559SDave Watson 2773c4d7559SDave Watson if (!tls_complete_pending_work(sk, ctx, 0, &timeo)) 2783c4d7559SDave Watson tls_handle_open_record(sk, 0); 2793c4d7559SDave Watson 280f66de3eeSBoris Pismenny /* We need these for tls_sw_fallback handling of other packets */ 281f66de3eeSBoris Pismenny if (ctx->tx_conf == TLS_SW) { 282dbe42559SDave Watson kfree(ctx->tx.rec_seq); 283dbe42559SDave Watson kfree(ctx->tx.iv); 284f66de3eeSBoris Pismenny tls_sw_free_resources_tx(sk); 285f66de3eeSBoris Pismenny } 286f66de3eeSBoris Pismenny 287f66de3eeSBoris Pismenny if (ctx->rx_conf == TLS_SW) { 288c46234ebSDave Watson kfree(ctx->rx.rec_seq); 289c46234ebSDave Watson kfree(ctx->rx.iv); 290f66de3eeSBoris Pismenny tls_sw_free_resources_rx(sk); 291c46234ebSDave Watson } 2923c4d7559SDave Watson 293e8f69799SIlya Lesokhin #ifdef CONFIG_TLS_DEVICE 2944799ac81SBoris Pismenny if (ctx->rx_conf == TLS_HW) 2954799ac81SBoris Pismenny tls_device_offload_cleanup_rx(sk); 2964799ac81SBoris Pismenny 2974799ac81SBoris Pismenny if (ctx->tx_conf != TLS_HW && ctx->rx_conf != TLS_HW) { 298e8f69799SIlya Lesokhin #else 299e8f69799SIlya Lesokhin { 300e8f69799SIlya Lesokhin #endif 30186029d10SSabrina Dubroca tls_ctx_free(ctx); 302e8f69799SIlya Lesokhin ctx = NULL; 303e8f69799SIlya Lesokhin } 304e8f69799SIlya Lesokhin 305ff45d820SIlya Lesokhin skip_tx_cleanup: 3063c4d7559SDave Watson release_sock(sk); 3073c4d7559SDave Watson sk_proto_close(sk, timeout); 308dd0bed16SAtul Gupta /* free ctx for TLS_HW_RECORD, used by tcp_set_state 309dd0bed16SAtul Gupta * for sk->sk_prot->unhash [tls_hw_unhash] 310dd0bed16SAtul Gupta */ 31198f0a395SEric Dumazet if (free_ctx) 31286029d10SSabrina Dubroca tls_ctx_free(ctx); 3133c4d7559SDave Watson } 3143c4d7559SDave Watson 3153c4d7559SDave Watson static int do_tls_getsockopt_tx(struct sock *sk, char __user *optval, 3163c4d7559SDave Watson int __user *optlen) 3173c4d7559SDave Watson { 3183c4d7559SDave Watson int rc = 0; 3193c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 3203c4d7559SDave Watson struct tls_crypto_info *crypto_info; 3213c4d7559SDave Watson int len; 3223c4d7559SDave Watson 3233c4d7559SDave Watson if (get_user(len, optlen)) 3243c4d7559SDave Watson return -EFAULT; 3253c4d7559SDave Watson 3263c4d7559SDave Watson if (!optval || (len < sizeof(*crypto_info))) { 3273c4d7559SDave Watson rc = -EINVAL; 3283c4d7559SDave Watson goto out; 3293c4d7559SDave Watson } 3303c4d7559SDave Watson 3313c4d7559SDave Watson if (!ctx) { 3323c4d7559SDave Watson rc = -EBUSY; 3333c4d7559SDave Watson goto out; 3343c4d7559SDave Watson } 3353c4d7559SDave Watson 3363c4d7559SDave Watson /* get user crypto info */ 33786029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 3383c4d7559SDave Watson 3393c4d7559SDave Watson if (!TLS_CRYPTO_INFO_READY(crypto_info)) { 3403c4d7559SDave Watson rc = -EBUSY; 3413c4d7559SDave Watson goto out; 3423c4d7559SDave Watson } 3433c4d7559SDave Watson 3445a3b886cSMatthias Rosenfelder if (len == sizeof(*crypto_info)) { 345ac55cd61SDan Carpenter if (copy_to_user(optval, crypto_info, sizeof(*crypto_info))) 346ac55cd61SDan Carpenter rc = -EFAULT; 3473c4d7559SDave Watson goto out; 3483c4d7559SDave Watson } 3493c4d7559SDave Watson 3503c4d7559SDave Watson switch (crypto_info->cipher_type) { 3513c4d7559SDave Watson case TLS_CIPHER_AES_GCM_128: { 3523c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128 * 3533c4d7559SDave Watson crypto_info_aes_gcm_128 = 3543c4d7559SDave Watson container_of(crypto_info, 3553c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128, 3563c4d7559SDave Watson info); 3573c4d7559SDave Watson 3583c4d7559SDave Watson if (len != sizeof(*crypto_info_aes_gcm_128)) { 3593c4d7559SDave Watson rc = -EINVAL; 3603c4d7559SDave Watson goto out; 3613c4d7559SDave Watson } 3623c4d7559SDave Watson lock_sock(sk); 363a1dfa681SBoris Pismenny memcpy(crypto_info_aes_gcm_128->iv, 364dbe42559SDave Watson ctx->tx.iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, 3653c4d7559SDave Watson TLS_CIPHER_AES_GCM_128_IV_SIZE); 366dbe42559SDave Watson memcpy(crypto_info_aes_gcm_128->rec_seq, ctx->tx.rec_seq, 367c410c196SBoris Pismenny TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE); 3683c4d7559SDave Watson release_sock(sk); 369ac55cd61SDan Carpenter if (copy_to_user(optval, 3703c4d7559SDave Watson crypto_info_aes_gcm_128, 371ac55cd61SDan Carpenter sizeof(*crypto_info_aes_gcm_128))) 372ac55cd61SDan Carpenter rc = -EFAULT; 3733c4d7559SDave Watson break; 3743c4d7559SDave Watson } 3753c4d7559SDave Watson default: 3763c4d7559SDave Watson rc = -EINVAL; 3773c4d7559SDave Watson } 3783c4d7559SDave Watson 3793c4d7559SDave Watson out: 3803c4d7559SDave Watson return rc; 3813c4d7559SDave Watson } 3823c4d7559SDave Watson 3833c4d7559SDave Watson static int do_tls_getsockopt(struct sock *sk, int optname, 3843c4d7559SDave Watson char __user *optval, int __user *optlen) 3853c4d7559SDave Watson { 3863c4d7559SDave Watson int rc = 0; 3873c4d7559SDave Watson 3883c4d7559SDave Watson switch (optname) { 3893c4d7559SDave Watson case TLS_TX: 3903c4d7559SDave Watson rc = do_tls_getsockopt_tx(sk, optval, optlen); 3913c4d7559SDave Watson break; 3923c4d7559SDave Watson default: 3933c4d7559SDave Watson rc = -ENOPROTOOPT; 3943c4d7559SDave Watson break; 3953c4d7559SDave Watson } 3963c4d7559SDave Watson return rc; 3973c4d7559SDave Watson } 3983c4d7559SDave Watson 3993c4d7559SDave Watson static int tls_getsockopt(struct sock *sk, int level, int optname, 4003c4d7559SDave Watson char __user *optval, int __user *optlen) 4013c4d7559SDave Watson { 4023c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 4033c4d7559SDave Watson 4043c4d7559SDave Watson if (level != SOL_TLS) 4053c4d7559SDave Watson return ctx->getsockopt(sk, level, optname, optval, optlen); 4063c4d7559SDave Watson 4073c4d7559SDave Watson return do_tls_getsockopt(sk, optname, optval, optlen); 4083c4d7559SDave Watson } 4093c4d7559SDave Watson 410c46234ebSDave Watson static int do_tls_setsockopt_conf(struct sock *sk, char __user *optval, 411c46234ebSDave Watson unsigned int optlen, int tx) 4123c4d7559SDave Watson { 413196c31b4SIlya Lesokhin struct tls_crypto_info *crypto_info; 4143c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 4153c4d7559SDave Watson int rc = 0; 41658371585SDave Watson int conf; 4173c4d7559SDave Watson 4183c4d7559SDave Watson if (!optval || (optlen < sizeof(*crypto_info))) { 4193c4d7559SDave Watson rc = -EINVAL; 4203c4d7559SDave Watson goto out; 4213c4d7559SDave Watson } 4223c4d7559SDave Watson 423c46234ebSDave Watson if (tx) 42486029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 425c46234ebSDave Watson else 42686029d10SSabrina Dubroca crypto_info = &ctx->crypto_recv.info; 427c46234ebSDave Watson 428196c31b4SIlya Lesokhin /* Currently we don't support set crypto info more than one time */ 429877d17c7SSabrina Dubroca if (TLS_CRYPTO_INFO_READY(crypto_info)) { 430877d17c7SSabrina Dubroca rc = -EBUSY; 431196c31b4SIlya Lesokhin goto out; 432877d17c7SSabrina Dubroca } 433196c31b4SIlya Lesokhin 434196c31b4SIlya Lesokhin rc = copy_from_user(crypto_info, optval, sizeof(*crypto_info)); 4353c4d7559SDave Watson if (rc) { 4363c4d7559SDave Watson rc = -EFAULT; 437257082e6SBoris Pismenny goto err_crypto_info; 4383c4d7559SDave Watson } 4393c4d7559SDave Watson 4403c4d7559SDave Watson /* check version */ 441196c31b4SIlya Lesokhin if (crypto_info->version != TLS_1_2_VERSION) { 4423c4d7559SDave Watson rc = -ENOTSUPP; 443196c31b4SIlya Lesokhin goto err_crypto_info; 4443c4d7559SDave Watson } 4453c4d7559SDave Watson 446196c31b4SIlya Lesokhin switch (crypto_info->cipher_type) { 4473c4d7559SDave Watson case TLS_CIPHER_AES_GCM_128: { 4483c4d7559SDave Watson if (optlen != sizeof(struct tls12_crypto_info_aes_gcm_128)) { 4493c4d7559SDave Watson rc = -EINVAL; 4506db959c8SSabrina Dubroca goto err_crypto_info; 4513c4d7559SDave Watson } 452196c31b4SIlya Lesokhin rc = copy_from_user(crypto_info + 1, optval + sizeof(*crypto_info), 453196c31b4SIlya Lesokhin optlen - sizeof(*crypto_info)); 4543c4d7559SDave Watson if (rc) { 4553c4d7559SDave Watson rc = -EFAULT; 4563c4d7559SDave Watson goto err_crypto_info; 4573c4d7559SDave Watson } 4583c4d7559SDave Watson break; 4593c4d7559SDave Watson } 4603c4d7559SDave Watson default: 4613c4d7559SDave Watson rc = -EINVAL; 4626db959c8SSabrina Dubroca goto err_crypto_info; 4633c4d7559SDave Watson } 4643c4d7559SDave Watson 465c46234ebSDave Watson if (tx) { 466e8f69799SIlya Lesokhin #ifdef CONFIG_TLS_DEVICE 467e8f69799SIlya Lesokhin rc = tls_set_device_offload(sk, ctx); 468e8f69799SIlya Lesokhin conf = TLS_HW; 469e8f69799SIlya Lesokhin if (rc) { 470e8f69799SIlya Lesokhin #else 471e8f69799SIlya Lesokhin { 472e8f69799SIlya Lesokhin #endif 473c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 1); 474f66de3eeSBoris Pismenny conf = TLS_SW; 475e8f69799SIlya Lesokhin } 476c46234ebSDave Watson } else { 4774799ac81SBoris Pismenny #ifdef CONFIG_TLS_DEVICE 4784799ac81SBoris Pismenny rc = tls_set_device_offload_rx(sk, ctx); 4794799ac81SBoris Pismenny conf = TLS_HW; 4804799ac81SBoris Pismenny if (rc) { 4814799ac81SBoris Pismenny #else 4824799ac81SBoris Pismenny { 4834799ac81SBoris Pismenny #endif 484c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 0); 485f66de3eeSBoris Pismenny conf = TLS_SW; 486c46234ebSDave Watson } 4874799ac81SBoris Pismenny } 488c46234ebSDave Watson 4893c4d7559SDave Watson if (rc) 4903c4d7559SDave Watson goto err_crypto_info; 4913c4d7559SDave Watson 492f66de3eeSBoris Pismenny if (tx) 493f66de3eeSBoris Pismenny ctx->tx_conf = conf; 494f66de3eeSBoris Pismenny else 495f66de3eeSBoris Pismenny ctx->rx_conf = conf; 4966d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 497c46234ebSDave Watson if (tx) { 498ee181e52SIlya Lesokhin ctx->sk_write_space = sk->sk_write_space; 499ee181e52SIlya Lesokhin sk->sk_write_space = tls_write_space; 500c46234ebSDave Watson } else { 501c46234ebSDave Watson sk->sk_socket->ops = &tls_sw_proto_ops; 502c46234ebSDave Watson } 5033c4d7559SDave Watson goto out; 5043c4d7559SDave Watson 5053c4d7559SDave Watson err_crypto_info: 506c844eb46SSabrina Dubroca memzero_explicit(crypto_info, sizeof(union tls_crypto_context)); 5073c4d7559SDave Watson out: 5083c4d7559SDave Watson return rc; 5093c4d7559SDave Watson } 5103c4d7559SDave Watson 5113c4d7559SDave Watson static int do_tls_setsockopt(struct sock *sk, int optname, 5123c4d7559SDave Watson char __user *optval, unsigned int optlen) 5133c4d7559SDave Watson { 5143c4d7559SDave Watson int rc = 0; 5153c4d7559SDave Watson 5163c4d7559SDave Watson switch (optname) { 5173c4d7559SDave Watson case TLS_TX: 518c46234ebSDave Watson case TLS_RX: 5193c4d7559SDave Watson lock_sock(sk); 520c46234ebSDave Watson rc = do_tls_setsockopt_conf(sk, optval, optlen, 521c46234ebSDave Watson optname == TLS_TX); 5223c4d7559SDave Watson release_sock(sk); 5233c4d7559SDave Watson break; 5243c4d7559SDave Watson default: 5253c4d7559SDave Watson rc = -ENOPROTOOPT; 5263c4d7559SDave Watson break; 5273c4d7559SDave Watson } 5283c4d7559SDave Watson return rc; 5293c4d7559SDave Watson } 5303c4d7559SDave Watson 5313c4d7559SDave Watson static int tls_setsockopt(struct sock *sk, int level, int optname, 5323c4d7559SDave Watson char __user *optval, unsigned int optlen) 5333c4d7559SDave Watson { 5343c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 5353c4d7559SDave Watson 5363c4d7559SDave Watson if (level != SOL_TLS) 5373c4d7559SDave Watson return ctx->setsockopt(sk, level, optname, optval, optlen); 5383c4d7559SDave Watson 5393c4d7559SDave Watson return do_tls_setsockopt(sk, optname, optval, optlen); 5403c4d7559SDave Watson } 5413c4d7559SDave Watson 542dd0bed16SAtul Gupta static struct tls_context *create_ctx(struct sock *sk) 543dd0bed16SAtul Gupta { 544dd0bed16SAtul Gupta struct inet_connection_sock *icsk = inet_csk(sk); 545dd0bed16SAtul Gupta struct tls_context *ctx; 546dd0bed16SAtul Gupta 547c6ec179aSGanesh Goudar ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC); 548dd0bed16SAtul Gupta if (!ctx) 549dd0bed16SAtul Gupta return NULL; 550dd0bed16SAtul Gupta 551dd0bed16SAtul Gupta icsk->icsk_ulp_data = ctx; 5526c0563e4SAtul Gupta ctx->setsockopt = sk->sk_prot->setsockopt; 5536c0563e4SAtul Gupta ctx->getsockopt = sk->sk_prot->getsockopt; 5546c0563e4SAtul Gupta ctx->sk_proto_close = sk->sk_prot->close; 555dd0bed16SAtul Gupta return ctx; 556dd0bed16SAtul Gupta } 557dd0bed16SAtul Gupta 55863a6b3feSAtul Gupta static void tls_build_proto(struct sock *sk) 55963a6b3feSAtul Gupta { 56063a6b3feSAtul Gupta int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 56163a6b3feSAtul Gupta 56263a6b3feSAtul Gupta /* Build IPv6 TLS whenever the address of tcpv6 _prot changes */ 56363a6b3feSAtul Gupta if (ip_ver == TLSV6 && 56463a6b3feSAtul Gupta unlikely(sk->sk_prot != smp_load_acquire(&saved_tcpv6_prot))) { 56563a6b3feSAtul Gupta mutex_lock(&tcpv6_prot_mutex); 56663a6b3feSAtul Gupta if (likely(sk->sk_prot != saved_tcpv6_prot)) { 56763a6b3feSAtul Gupta build_protos(tls_prots[TLSV6], sk->sk_prot); 56863a6b3feSAtul Gupta smp_store_release(&saved_tcpv6_prot, sk->sk_prot); 56963a6b3feSAtul Gupta } 57063a6b3feSAtul Gupta mutex_unlock(&tcpv6_prot_mutex); 57163a6b3feSAtul Gupta } 57263a6b3feSAtul Gupta 57363a6b3feSAtul Gupta if (ip_ver == TLSV4 && 57463a6b3feSAtul Gupta unlikely(sk->sk_prot != smp_load_acquire(&saved_tcpv4_prot))) { 57563a6b3feSAtul Gupta mutex_lock(&tcpv4_prot_mutex); 57663a6b3feSAtul Gupta if (likely(sk->sk_prot != saved_tcpv4_prot)) { 57763a6b3feSAtul Gupta build_protos(tls_prots[TLSV4], sk->sk_prot); 57863a6b3feSAtul Gupta smp_store_release(&saved_tcpv4_prot, sk->sk_prot); 57963a6b3feSAtul Gupta } 58063a6b3feSAtul Gupta mutex_unlock(&tcpv4_prot_mutex); 58163a6b3feSAtul Gupta } 58263a6b3feSAtul Gupta } 58363a6b3feSAtul Gupta 58476f7164dSAtul Gupta static void tls_hw_sk_destruct(struct sock *sk) 58576f7164dSAtul Gupta { 58676f7164dSAtul Gupta struct tls_context *ctx = tls_get_ctx(sk); 58776f7164dSAtul Gupta struct inet_connection_sock *icsk = inet_csk(sk); 58876f7164dSAtul Gupta 58976f7164dSAtul Gupta ctx->sk_destruct(sk); 59076f7164dSAtul Gupta /* Free ctx */ 59176f7164dSAtul Gupta kfree(ctx); 59276f7164dSAtul Gupta icsk->icsk_ulp_data = NULL; 59376f7164dSAtul Gupta } 59476f7164dSAtul Gupta 595dd0bed16SAtul Gupta static int tls_hw_prot(struct sock *sk) 596dd0bed16SAtul Gupta { 597dd0bed16SAtul Gupta struct tls_context *ctx; 598dd0bed16SAtul Gupta struct tls_device *dev; 599dd0bed16SAtul Gupta int rc = 0; 600dd0bed16SAtul Gupta 601df9d4a17SAtul Gupta spin_lock_bh(&device_spinlock); 602dd0bed16SAtul Gupta list_for_each_entry(dev, &device_list, dev_list) { 603dd0bed16SAtul Gupta if (dev->feature && dev->feature(dev)) { 604dd0bed16SAtul Gupta ctx = create_ctx(sk); 605dd0bed16SAtul Gupta if (!ctx) 606dd0bed16SAtul Gupta goto out; 607dd0bed16SAtul Gupta 60863a6b3feSAtul Gupta spin_unlock_bh(&device_spinlock); 60963a6b3feSAtul Gupta tls_build_proto(sk); 610dd0bed16SAtul Gupta ctx->hash = sk->sk_prot->hash; 611dd0bed16SAtul Gupta ctx->unhash = sk->sk_prot->unhash; 612dd0bed16SAtul Gupta ctx->sk_proto_close = sk->sk_prot->close; 61376f7164dSAtul Gupta ctx->sk_destruct = sk->sk_destruct; 61476f7164dSAtul Gupta sk->sk_destruct = tls_hw_sk_destruct; 615f66de3eeSBoris Pismenny ctx->rx_conf = TLS_HW_RECORD; 616f66de3eeSBoris Pismenny ctx->tx_conf = TLS_HW_RECORD; 617dd0bed16SAtul Gupta update_sk_prot(sk, ctx); 61863a6b3feSAtul Gupta spin_lock_bh(&device_spinlock); 619dd0bed16SAtul Gupta rc = 1; 620dd0bed16SAtul Gupta break; 621dd0bed16SAtul Gupta } 622dd0bed16SAtul Gupta } 623dd0bed16SAtul Gupta out: 624df9d4a17SAtul Gupta spin_unlock_bh(&device_spinlock); 625dd0bed16SAtul Gupta return rc; 626dd0bed16SAtul Gupta } 627dd0bed16SAtul Gupta 628dd0bed16SAtul Gupta static void tls_hw_unhash(struct sock *sk) 629dd0bed16SAtul Gupta { 630dd0bed16SAtul Gupta struct tls_context *ctx = tls_get_ctx(sk); 631dd0bed16SAtul Gupta struct tls_device *dev; 632dd0bed16SAtul Gupta 633df9d4a17SAtul Gupta spin_lock_bh(&device_spinlock); 634dd0bed16SAtul Gupta list_for_each_entry(dev, &device_list, dev_list) { 635df9d4a17SAtul Gupta if (dev->unhash) { 636df9d4a17SAtul Gupta kref_get(&dev->kref); 637df9d4a17SAtul Gupta spin_unlock_bh(&device_spinlock); 638dd0bed16SAtul Gupta dev->unhash(dev, sk); 639df9d4a17SAtul Gupta kref_put(&dev->kref, dev->release); 640df9d4a17SAtul Gupta spin_lock_bh(&device_spinlock); 641dd0bed16SAtul Gupta } 642df9d4a17SAtul Gupta } 643df9d4a17SAtul Gupta spin_unlock_bh(&device_spinlock); 644dd0bed16SAtul Gupta ctx->unhash(sk); 645dd0bed16SAtul Gupta } 646dd0bed16SAtul Gupta 647dd0bed16SAtul Gupta static int tls_hw_hash(struct sock *sk) 648dd0bed16SAtul Gupta { 649dd0bed16SAtul Gupta struct tls_context *ctx = tls_get_ctx(sk); 650dd0bed16SAtul Gupta struct tls_device *dev; 651dd0bed16SAtul Gupta int err; 652dd0bed16SAtul Gupta 653dd0bed16SAtul Gupta err = ctx->hash(sk); 654df9d4a17SAtul Gupta spin_lock_bh(&device_spinlock); 655dd0bed16SAtul Gupta list_for_each_entry(dev, &device_list, dev_list) { 656df9d4a17SAtul Gupta if (dev->hash) { 657df9d4a17SAtul Gupta kref_get(&dev->kref); 658df9d4a17SAtul Gupta spin_unlock_bh(&device_spinlock); 659dd0bed16SAtul Gupta err |= dev->hash(dev, sk); 660df9d4a17SAtul Gupta kref_put(&dev->kref, dev->release); 661df9d4a17SAtul Gupta spin_lock_bh(&device_spinlock); 662dd0bed16SAtul Gupta } 663df9d4a17SAtul Gupta } 664df9d4a17SAtul Gupta spin_unlock_bh(&device_spinlock); 665dd0bed16SAtul Gupta 666dd0bed16SAtul Gupta if (err) 667dd0bed16SAtul Gupta tls_hw_unhash(sk); 668dd0bed16SAtul Gupta return err; 669dd0bed16SAtul Gupta } 670dd0bed16SAtul Gupta 671f66de3eeSBoris Pismenny static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 672f66de3eeSBoris Pismenny struct proto *base) 673c113187dSBoris Pismenny { 674f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE] = *base; 675f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].setsockopt = tls_setsockopt; 676f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].getsockopt = tls_getsockopt; 677f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].close = tls_sk_proto_close; 678c113187dSBoris Pismenny 679f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 680f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendmsg = tls_sw_sendmsg; 681f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendpage = tls_sw_sendpage; 682c46234ebSDave Watson 683f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW] = prot[TLS_BASE][TLS_BASE]; 684f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].recvmsg = tls_sw_recvmsg; 685924ad65eSJohn Fastabend prot[TLS_BASE][TLS_SW].stream_memory_read = tls_sw_stream_read; 686f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].close = tls_sk_proto_close; 687c46234ebSDave Watson 688f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW] = prot[TLS_SW][TLS_BASE]; 689f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].recvmsg = tls_sw_recvmsg; 690924ad65eSJohn Fastabend prot[TLS_SW][TLS_SW].stream_memory_read = tls_sw_stream_read; 691f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].close = tls_sk_proto_close; 692dd0bed16SAtul Gupta 693e8f69799SIlya Lesokhin #ifdef CONFIG_TLS_DEVICE 694e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 695e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendmsg = tls_device_sendmsg; 696e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendpage = tls_device_sendpage; 697e8f69799SIlya Lesokhin 698e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW] = prot[TLS_BASE][TLS_SW]; 699e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendmsg = tls_device_sendmsg; 700e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendpage = tls_device_sendpage; 7014799ac81SBoris Pismenny 7024799ac81SBoris Pismenny prot[TLS_BASE][TLS_HW] = prot[TLS_BASE][TLS_SW]; 7034799ac81SBoris Pismenny 7044799ac81SBoris Pismenny prot[TLS_SW][TLS_HW] = prot[TLS_SW][TLS_SW]; 7054799ac81SBoris Pismenny 7064799ac81SBoris Pismenny prot[TLS_HW][TLS_HW] = prot[TLS_HW][TLS_SW]; 707e8f69799SIlya Lesokhin #endif 708e8f69799SIlya Lesokhin 709f66de3eeSBoris Pismenny prot[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 710f66de3eeSBoris Pismenny prot[TLS_HW_RECORD][TLS_HW_RECORD].hash = tls_hw_hash; 711f66de3eeSBoris Pismenny prot[TLS_HW_RECORD][TLS_HW_RECORD].unhash = tls_hw_unhash; 712f66de3eeSBoris Pismenny prot[TLS_HW_RECORD][TLS_HW_RECORD].close = tls_sk_proto_close; 713c113187dSBoris Pismenny } 714c113187dSBoris Pismenny 7153c4d7559SDave Watson static int tls_init(struct sock *sk) 7163c4d7559SDave Watson { 7173c4d7559SDave Watson struct tls_context *ctx; 7183c4d7559SDave Watson int rc = 0; 7193c4d7559SDave Watson 720dd0bed16SAtul Gupta if (tls_hw_prot(sk)) 721dd0bed16SAtul Gupta goto out; 722dd0bed16SAtul Gupta 723d91c3e17SIlya Lesokhin /* The TLS ulp is currently supported only for TCP sockets 724d91c3e17SIlya Lesokhin * in ESTABLISHED state. 725d91c3e17SIlya Lesokhin * Supporting sockets in LISTEN state will require us 726d91c3e17SIlya Lesokhin * to modify the accept implementation to clone rather then 727d91c3e17SIlya Lesokhin * share the ulp context. 728d91c3e17SIlya Lesokhin */ 729d91c3e17SIlya Lesokhin if (sk->sk_state != TCP_ESTABLISHED) 730d91c3e17SIlya Lesokhin return -ENOTSUPP; 731d91c3e17SIlya Lesokhin 7323c4d7559SDave Watson /* allocate tls context */ 733dd0bed16SAtul Gupta ctx = create_ctx(sk); 7343c4d7559SDave Watson if (!ctx) { 7353c4d7559SDave Watson rc = -ENOMEM; 7363c4d7559SDave Watson goto out; 7373c4d7559SDave Watson } 7386d88207fSIlya Lesokhin 73963a6b3feSAtul Gupta tls_build_proto(sk); 740f66de3eeSBoris Pismenny ctx->tx_conf = TLS_BASE; 741f66de3eeSBoris Pismenny ctx->rx_conf = TLS_BASE; 7426d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 7433c4d7559SDave Watson out: 7443c4d7559SDave Watson return rc; 7453c4d7559SDave Watson } 7463c4d7559SDave Watson 747dd0bed16SAtul Gupta void tls_register_device(struct tls_device *device) 748dd0bed16SAtul Gupta { 749df9d4a17SAtul Gupta spin_lock_bh(&device_spinlock); 750dd0bed16SAtul Gupta list_add_tail(&device->dev_list, &device_list); 751df9d4a17SAtul Gupta spin_unlock_bh(&device_spinlock); 752dd0bed16SAtul Gupta } 753dd0bed16SAtul Gupta EXPORT_SYMBOL(tls_register_device); 754dd0bed16SAtul Gupta 755dd0bed16SAtul Gupta void tls_unregister_device(struct tls_device *device) 756dd0bed16SAtul Gupta { 757df9d4a17SAtul Gupta spin_lock_bh(&device_spinlock); 758dd0bed16SAtul Gupta list_del(&device->dev_list); 759df9d4a17SAtul Gupta spin_unlock_bh(&device_spinlock); 760dd0bed16SAtul Gupta } 761dd0bed16SAtul Gupta EXPORT_SYMBOL(tls_unregister_device); 762dd0bed16SAtul Gupta 7633c4d7559SDave Watson static struct tcp_ulp_ops tcp_tls_ulp_ops __read_mostly = { 7643c4d7559SDave Watson .name = "tls", 7653c4d7559SDave Watson .owner = THIS_MODULE, 7663c4d7559SDave Watson .init = tls_init, 7673c4d7559SDave Watson }; 7683c4d7559SDave Watson 7693c4d7559SDave Watson static int __init tls_register(void) 7703c4d7559SDave Watson { 771c46234ebSDave Watson tls_sw_proto_ops = inet_stream_ops; 772c46234ebSDave Watson tls_sw_proto_ops.splice_read = tls_sw_splice_read; 773c46234ebSDave Watson 774e8f69799SIlya Lesokhin #ifdef CONFIG_TLS_DEVICE 775e8f69799SIlya Lesokhin tls_device_init(); 776e8f69799SIlya Lesokhin #endif 7773c4d7559SDave Watson tcp_register_ulp(&tcp_tls_ulp_ops); 7783c4d7559SDave Watson 7793c4d7559SDave Watson return 0; 7803c4d7559SDave Watson } 7813c4d7559SDave Watson 7823c4d7559SDave Watson static void __exit tls_unregister(void) 7833c4d7559SDave Watson { 7843c4d7559SDave Watson tcp_unregister_ulp(&tcp_tls_ulp_ops); 785e8f69799SIlya Lesokhin #ifdef CONFIG_TLS_DEVICE 786e8f69799SIlya Lesokhin tls_device_cleanup(); 787e8f69799SIlya Lesokhin #endif 7883c4d7559SDave Watson } 7893c4d7559SDave Watson 7903c4d7559SDave Watson module_init(tls_register); 7913c4d7559SDave Watson module_exit(tls_unregister); 792