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> 4226811cc9SDavide Caratti #include <linux/inet_diag.h> 433c4d7559SDave Watson 44d26b698dSJakub Kicinski #include <net/snmp.h> 453c4d7559SDave Watson #include <net/tls.h> 4625a3cd81SJakub Kicinski #include <net/tls_toe.h> 473c4d7559SDave Watson 483c4d7559SDave Watson MODULE_AUTHOR("Mellanox Technologies"); 493c4d7559SDave Watson MODULE_DESCRIPTION("Transport Layer Security Support"); 503c4d7559SDave Watson MODULE_LICENSE("Dual BSD/GPL"); 51037b0b86SDaniel Borkmann MODULE_ALIAS_TCP_ULP("tls"); 523c4d7559SDave Watson 536d88207fSIlya Lesokhin enum { 54c113187dSBoris Pismenny TLSV4, 55c113187dSBoris Pismenny TLSV6, 56c113187dSBoris Pismenny TLS_NUM_PROTS, 57c113187dSBoris Pismenny }; 586d88207fSIlya Lesokhin 59f691a25cSArnd Bergmann static const struct proto *saved_tcpv6_prot; 60c113187dSBoris Pismenny static DEFINE_MUTEX(tcpv6_prot_mutex); 61f691a25cSArnd Bergmann static const struct proto *saved_tcpv4_prot; 6228cb6f1eSJohn Fastabend static DEFINE_MUTEX(tcpv4_prot_mutex); 63f66de3eeSBoris Pismenny static struct proto tls_prots[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG]; 64f3911f73SJakub Kicinski static struct proto_ops tls_proto_ops[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG]; 6563a6b3feSAtul Gupta static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 66f13fe3e6SJakub Sitnicki const struct proto *base); 676d88207fSIlya Lesokhin 6808700dabSJakub Kicinski void update_sk_prot(struct sock *sk, struct tls_context *ctx) 696d88207fSIlya Lesokhin { 70c113187dSBoris Pismenny int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 71c113187dSBoris Pismenny 72d5bee737SJakub Sitnicki WRITE_ONCE(sk->sk_prot, 73d5bee737SJakub Sitnicki &tls_prots[ip_ver][ctx->tx_conf][ctx->rx_conf]); 74f3911f73SJakub Kicinski WRITE_ONCE(sk->sk_socket->ops, 75f3911f73SJakub Kicinski &tls_proto_ops[ip_ver][ctx->tx_conf][ctx->rx_conf]); 766d88207fSIlya Lesokhin } 773c4d7559SDave Watson 783c4d7559SDave Watson int wait_on_pending_writer(struct sock *sk, long *timeo) 793c4d7559SDave Watson { 803c4d7559SDave Watson int rc = 0; 813c4d7559SDave Watson DEFINE_WAIT_FUNC(wait, woken_wake_function); 823c4d7559SDave Watson 833c4d7559SDave Watson add_wait_queue(sk_sleep(sk), &wait); 843c4d7559SDave Watson while (1) { 853c4d7559SDave Watson if (!*timeo) { 863c4d7559SDave Watson rc = -EAGAIN; 873c4d7559SDave Watson break; 883c4d7559SDave Watson } 893c4d7559SDave Watson 903c4d7559SDave Watson if (signal_pending(current)) { 913c4d7559SDave Watson rc = sock_intr_errno(*timeo); 923c4d7559SDave Watson break; 933c4d7559SDave Watson } 943c4d7559SDave Watson 953c4d7559SDave Watson if (sk_wait_event(sk, timeo, !sk->sk_write_pending, &wait)) 963c4d7559SDave Watson break; 973c4d7559SDave Watson } 983c4d7559SDave Watson remove_wait_queue(sk_sleep(sk), &wait); 993c4d7559SDave Watson return rc; 1003c4d7559SDave Watson } 1013c4d7559SDave Watson 1023c4d7559SDave Watson int tls_push_sg(struct sock *sk, 1033c4d7559SDave Watson struct tls_context *ctx, 1043c4d7559SDave Watson struct scatterlist *sg, 1053c4d7559SDave Watson u16 first_offset, 1063c4d7559SDave Watson int flags) 1073c4d7559SDave Watson { 1083c4d7559SDave Watson int sendpage_flags = flags | MSG_SENDPAGE_NOTLAST; 1093c4d7559SDave Watson int ret = 0; 1103c4d7559SDave Watson struct page *p; 1113c4d7559SDave Watson size_t size; 1123c4d7559SDave Watson int offset = first_offset; 1133c4d7559SDave Watson 1143c4d7559SDave Watson size = sg->length - offset; 1153c4d7559SDave Watson offset += sg->offset; 1163c4d7559SDave Watson 117c212d2c7SDave Watson ctx->in_tcp_sendpages = true; 1183c4d7559SDave Watson while (1) { 1193c4d7559SDave Watson if (sg_is_last(sg)) 1203c4d7559SDave Watson sendpage_flags = flags; 1213c4d7559SDave Watson 1223c4d7559SDave Watson /* is sending application-limited? */ 1233c4d7559SDave Watson tcp_rate_check_app_limited(sk); 1243c4d7559SDave Watson p = sg_page(sg); 1253c4d7559SDave Watson retry: 1263c4d7559SDave Watson ret = do_tcp_sendpages(sk, p, offset, size, sendpage_flags); 1273c4d7559SDave Watson 1283c4d7559SDave Watson if (ret != size) { 1293c4d7559SDave Watson if (ret > 0) { 1303c4d7559SDave Watson offset += ret; 1313c4d7559SDave Watson size -= ret; 1323c4d7559SDave Watson goto retry; 1333c4d7559SDave Watson } 1343c4d7559SDave Watson 1353c4d7559SDave Watson offset -= sg->offset; 1363c4d7559SDave Watson ctx->partially_sent_offset = offset; 1373c4d7559SDave Watson ctx->partially_sent_record = (void *)sg; 138080324c3SAndre Tomt ctx->in_tcp_sendpages = false; 1393c4d7559SDave Watson return ret; 1403c4d7559SDave Watson } 1413c4d7559SDave Watson 1423c4d7559SDave Watson put_page(p); 1433c4d7559SDave Watson sk_mem_uncharge(sk, sg->length); 1443c4d7559SDave Watson sg = sg_next(sg); 1453c4d7559SDave Watson if (!sg) 1463c4d7559SDave Watson break; 1473c4d7559SDave Watson 1483c4d7559SDave Watson offset = sg->offset; 1493c4d7559SDave Watson size = sg->length; 1503c4d7559SDave Watson } 1513c4d7559SDave Watson 152c212d2c7SDave Watson ctx->in_tcp_sendpages = false; 1533c4d7559SDave Watson 1543c4d7559SDave Watson return 0; 1553c4d7559SDave Watson } 1563c4d7559SDave Watson 1573c4d7559SDave Watson static int tls_handle_open_record(struct sock *sk, int flags) 1583c4d7559SDave Watson { 1593c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 1603c4d7559SDave Watson 1613c4d7559SDave Watson if (tls_is_pending_open_record(ctx)) 1623c4d7559SDave Watson return ctx->push_pending_record(sk, flags); 1633c4d7559SDave Watson 1643c4d7559SDave Watson return 0; 1653c4d7559SDave Watson } 1663c4d7559SDave Watson 1673c4d7559SDave Watson int tls_proccess_cmsg(struct sock *sk, struct msghdr *msg, 1683c4d7559SDave Watson unsigned char *record_type) 1693c4d7559SDave Watson { 1703c4d7559SDave Watson struct cmsghdr *cmsg; 1713c4d7559SDave Watson int rc = -EINVAL; 1723c4d7559SDave Watson 1733c4d7559SDave Watson for_each_cmsghdr(cmsg, msg) { 1743c4d7559SDave Watson if (!CMSG_OK(msg, cmsg)) 1753c4d7559SDave Watson return -EINVAL; 1763c4d7559SDave Watson if (cmsg->cmsg_level != SOL_TLS) 1773c4d7559SDave Watson continue; 1783c4d7559SDave Watson 1793c4d7559SDave Watson switch (cmsg->cmsg_type) { 1803c4d7559SDave Watson case TLS_SET_RECORD_TYPE: 1813c4d7559SDave Watson if (cmsg->cmsg_len < CMSG_LEN(sizeof(*record_type))) 1823c4d7559SDave Watson return -EINVAL; 1833c4d7559SDave Watson 1843c4d7559SDave Watson if (msg->msg_flags & MSG_MORE) 1853c4d7559SDave Watson return -EINVAL; 1863c4d7559SDave Watson 1873c4d7559SDave Watson rc = tls_handle_open_record(sk, msg->msg_flags); 1883c4d7559SDave Watson if (rc) 1893c4d7559SDave Watson return rc; 1903c4d7559SDave Watson 1913c4d7559SDave Watson *record_type = *(unsigned char *)CMSG_DATA(cmsg); 1923c4d7559SDave Watson rc = 0; 1933c4d7559SDave Watson break; 1943c4d7559SDave Watson default: 1953c4d7559SDave Watson return -EINVAL; 1963c4d7559SDave Watson } 1973c4d7559SDave Watson } 1983c4d7559SDave Watson 1993c4d7559SDave Watson return rc; 2003c4d7559SDave Watson } 2013c4d7559SDave Watson 202a42055e8SVakul Garg int tls_push_partial_record(struct sock *sk, struct tls_context *ctx, 203a42055e8SVakul Garg int flags) 2043c4d7559SDave Watson { 2053c4d7559SDave Watson struct scatterlist *sg; 2063c4d7559SDave Watson u16 offset; 2073c4d7559SDave Watson 2083c4d7559SDave Watson sg = ctx->partially_sent_record; 2093c4d7559SDave Watson offset = ctx->partially_sent_offset; 2103c4d7559SDave Watson 2113c4d7559SDave Watson ctx->partially_sent_record = NULL; 2123c4d7559SDave Watson return tls_push_sg(sk, ctx, sg, offset, flags); 2133c4d7559SDave Watson } 2143c4d7559SDave Watson 215c5daa6ccSJakub Kicinski void tls_free_partial_record(struct sock *sk, struct tls_context *ctx) 21635b71a34SJakub Kicinski { 21735b71a34SJakub Kicinski struct scatterlist *sg; 21835b71a34SJakub Kicinski 219c5daa6ccSJakub Kicinski for (sg = ctx->partially_sent_record; sg; sg = sg_next(sg)) { 22035b71a34SJakub Kicinski put_page(sg_page(sg)); 22135b71a34SJakub Kicinski sk_mem_uncharge(sk, sg->length); 22235b71a34SJakub Kicinski } 22335b71a34SJakub Kicinski ctx->partially_sent_record = NULL; 22435b71a34SJakub Kicinski } 22535b71a34SJakub Kicinski 2263c4d7559SDave Watson static void tls_write_space(struct sock *sk) 2273c4d7559SDave Watson { 2283c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 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 2397463d3a2SBoris Pismenny #ifdef CONFIG_TLS_DEVICE 2407463d3a2SBoris Pismenny if (ctx->tx_conf == TLS_HW) 2417463d3a2SBoris Pismenny tls_device_write_space(sk, ctx); 2427463d3a2SBoris Pismenny else 2437463d3a2SBoris Pismenny #endif 2447463d3a2SBoris Pismenny tls_sw_write_space(sk, ctx); 2454504ab0eSVakul Garg 2464504ab0eSVakul Garg ctx->sk_write_space(sk); 2473c4d7559SDave Watson } 2483c4d7559SDave Watson 24915a7dea7SJakub Kicinski /** 25015a7dea7SJakub Kicinski * tls_ctx_free() - free TLS ULP context 25115a7dea7SJakub Kicinski * @sk: socket to with @ctx is attached 25215a7dea7SJakub Kicinski * @ctx: TLS context structure 25315a7dea7SJakub Kicinski * 25415a7dea7SJakub Kicinski * Free TLS context. If @sk is %NULL caller guarantees that the socket 25515a7dea7SJakub Kicinski * to which @ctx was attached has no outstanding references. 25615a7dea7SJakub Kicinski */ 25715a7dea7SJakub Kicinski void tls_ctx_free(struct sock *sk, struct tls_context *ctx) 25886029d10SSabrina Dubroca { 25986029d10SSabrina Dubroca if (!ctx) 26086029d10SSabrina Dubroca return; 26186029d10SSabrina Dubroca 26286029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_send, sizeof(ctx->crypto_send)); 26386029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_recv, sizeof(ctx->crypto_recv)); 26479ffe608SJakub Kicinski mutex_destroy(&ctx->tx_lock); 26515a7dea7SJakub Kicinski 26615a7dea7SJakub Kicinski if (sk) 26715a7dea7SJakub Kicinski kfree_rcu(ctx, rcu); 26815a7dea7SJakub Kicinski else 26986029d10SSabrina Dubroca kfree(ctx); 27086029d10SSabrina Dubroca } 27186029d10SSabrina Dubroca 272313ab004SJohn Fastabend static void tls_sk_proto_cleanup(struct sock *sk, 273313ab004SJohn Fastabend struct tls_context *ctx, long timeo) 2743c4d7559SDave Watson { 2759354544cSDirk van der Merwe if (unlikely(sk->sk_write_pending) && 2769354544cSDirk van der Merwe !wait_on_pending_writer(sk, &timeo)) 2773c4d7559SDave Watson tls_handle_open_record(sk, 0); 2783c4d7559SDave Watson 279f66de3eeSBoris Pismenny /* We need these for tls_sw_fallback handling of other packets */ 280f66de3eeSBoris Pismenny if (ctx->tx_conf == TLS_SW) { 281dbe42559SDave Watson kfree(ctx->tx.rec_seq); 282dbe42559SDave Watson kfree(ctx->tx.iv); 283313ab004SJohn Fastabend tls_sw_release_resources_tx(sk); 284b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXSW); 28535b71a34SJakub Kicinski } else if (ctx->tx_conf == TLS_HW) { 28635b71a34SJakub Kicinski tls_device_free_resources_tx(sk); 287b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXDEVICE); 288f66de3eeSBoris Pismenny } 289f66de3eeSBoris Pismenny 290b32fd3ccSJakub Kicinski if (ctx->rx_conf == TLS_SW) { 291313ab004SJohn Fastabend tls_sw_release_resources_rx(sk); 292b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXSW); 293b32fd3ccSJakub Kicinski } else if (ctx->rx_conf == TLS_HW) { 2944799ac81SBoris Pismenny tls_device_offload_cleanup_rx(sk); 295b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXDEVICE); 296b32fd3ccSJakub Kicinski } 297e8f69799SIlya Lesokhin } 298e8f69799SIlya Lesokhin 299313ab004SJohn Fastabend static void tls_sk_proto_close(struct sock *sk, long timeout) 300313ab004SJohn Fastabend { 30195fa1454SJohn Fastabend struct inet_connection_sock *icsk = inet_csk(sk); 302313ab004SJohn Fastabend struct tls_context *ctx = tls_get_ctx(sk); 303313ab004SJohn Fastabend long timeo = sock_sndtimeo(sk, 0); 304313ab004SJohn Fastabend bool free_ctx; 305313ab004SJohn Fastabend 306313ab004SJohn Fastabend if (ctx->tx_conf == TLS_SW) 307313ab004SJohn Fastabend tls_sw_cancel_work_tx(ctx); 308313ab004SJohn Fastabend 309313ab004SJohn Fastabend lock_sock(sk); 310313ab004SJohn Fastabend free_ctx = ctx->tx_conf != TLS_HW && ctx->rx_conf != TLS_HW; 311313ab004SJohn Fastabend 312313ab004SJohn Fastabend if (ctx->tx_conf != TLS_BASE || ctx->rx_conf != TLS_BASE) 313313ab004SJohn Fastabend tls_sk_proto_cleanup(sk, ctx, timeo); 314313ab004SJohn Fastabend 31595fa1454SJohn Fastabend write_lock_bh(&sk->sk_callback_lock); 31695fa1454SJohn Fastabend if (free_ctx) 31715a7dea7SJakub Kicinski rcu_assign_pointer(icsk->icsk_ulp_data, NULL); 318d5bee737SJakub Sitnicki WRITE_ONCE(sk->sk_prot, ctx->sk_proto); 319d85f0177SJohn Fastabend if (sk->sk_write_space == tls_write_space) 32057c722e9SJakub Kicinski sk->sk_write_space = ctx->sk_write_space; 32195fa1454SJohn Fastabend write_unlock_bh(&sk->sk_callback_lock); 3223c4d7559SDave Watson release_sock(sk); 323313ab004SJohn Fastabend if (ctx->tx_conf == TLS_SW) 324313ab004SJohn Fastabend tls_sw_free_ctx_tx(ctx); 325313ab004SJohn Fastabend if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) 326313ab004SJohn Fastabend tls_sw_strparser_done(ctx); 327313ab004SJohn Fastabend if (ctx->rx_conf == TLS_SW) 328313ab004SJohn Fastabend tls_sw_free_ctx_rx(ctx); 329be7bbea1SJakub Kicinski ctx->sk_proto->close(sk, timeout); 330313ab004SJohn Fastabend 33198f0a395SEric Dumazet if (free_ctx) 33215a7dea7SJakub Kicinski tls_ctx_free(sk, ctx); 3333c4d7559SDave Watson } 3343c4d7559SDave Watson 335ffa81fa4SYutaro Hayakawa static int do_tls_getsockopt_conf(struct sock *sk, char __user *optval, 336ffa81fa4SYutaro Hayakawa int __user *optlen, int tx) 3373c4d7559SDave Watson { 3383c4d7559SDave Watson int rc = 0; 3393c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 3403c4d7559SDave Watson struct tls_crypto_info *crypto_info; 341ffa81fa4SYutaro Hayakawa struct cipher_context *cctx; 3423c4d7559SDave Watson int len; 3433c4d7559SDave Watson 3443c4d7559SDave Watson if (get_user(len, optlen)) 3453c4d7559SDave Watson return -EFAULT; 3463c4d7559SDave Watson 3473c4d7559SDave Watson if (!optval || (len < sizeof(*crypto_info))) { 3483c4d7559SDave Watson rc = -EINVAL; 3493c4d7559SDave Watson goto out; 3503c4d7559SDave Watson } 3513c4d7559SDave Watson 3523c4d7559SDave Watson if (!ctx) { 3533c4d7559SDave Watson rc = -EBUSY; 3543c4d7559SDave Watson goto out; 3553c4d7559SDave Watson } 3563c4d7559SDave Watson 3573c4d7559SDave Watson /* get user crypto info */ 358ffa81fa4SYutaro Hayakawa if (tx) { 35986029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 360ffa81fa4SYutaro Hayakawa cctx = &ctx->tx; 361ffa81fa4SYutaro Hayakawa } else { 362ffa81fa4SYutaro Hayakawa crypto_info = &ctx->crypto_recv.info; 363ffa81fa4SYutaro Hayakawa cctx = &ctx->rx; 364ffa81fa4SYutaro Hayakawa } 3653c4d7559SDave Watson 3663c4d7559SDave Watson if (!TLS_CRYPTO_INFO_READY(crypto_info)) { 3673c4d7559SDave Watson rc = -EBUSY; 3683c4d7559SDave Watson goto out; 3693c4d7559SDave Watson } 3703c4d7559SDave Watson 3715a3b886cSMatthias Rosenfelder if (len == sizeof(*crypto_info)) { 372ac55cd61SDan Carpenter if (copy_to_user(optval, crypto_info, sizeof(*crypto_info))) 373ac55cd61SDan Carpenter rc = -EFAULT; 3743c4d7559SDave Watson goto out; 3753c4d7559SDave Watson } 3763c4d7559SDave Watson 3773c4d7559SDave Watson switch (crypto_info->cipher_type) { 3783c4d7559SDave Watson case TLS_CIPHER_AES_GCM_128: { 3793c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128 * 3803c4d7559SDave Watson crypto_info_aes_gcm_128 = 3813c4d7559SDave Watson container_of(crypto_info, 3823c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128, 3833c4d7559SDave Watson info); 3843c4d7559SDave Watson 3853c4d7559SDave Watson if (len != sizeof(*crypto_info_aes_gcm_128)) { 3863c4d7559SDave Watson rc = -EINVAL; 3873c4d7559SDave Watson goto out; 3883c4d7559SDave Watson } 3893c4d7559SDave Watson lock_sock(sk); 390a1dfa681SBoris Pismenny memcpy(crypto_info_aes_gcm_128->iv, 391ffa81fa4SYutaro Hayakawa cctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, 3923c4d7559SDave Watson TLS_CIPHER_AES_GCM_128_IV_SIZE); 393ffa81fa4SYutaro Hayakawa memcpy(crypto_info_aes_gcm_128->rec_seq, cctx->rec_seq, 394c410c196SBoris Pismenny TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE); 3953c4d7559SDave Watson release_sock(sk); 396ac55cd61SDan Carpenter if (copy_to_user(optval, 3973c4d7559SDave Watson crypto_info_aes_gcm_128, 398ac55cd61SDan Carpenter sizeof(*crypto_info_aes_gcm_128))) 399ac55cd61SDan Carpenter rc = -EFAULT; 4003c4d7559SDave Watson break; 4013c4d7559SDave Watson } 402fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_256: { 403fb99bce7SDave Watson struct tls12_crypto_info_aes_gcm_256 * 404fb99bce7SDave Watson crypto_info_aes_gcm_256 = 405fb99bce7SDave Watson container_of(crypto_info, 406fb99bce7SDave Watson struct tls12_crypto_info_aes_gcm_256, 407fb99bce7SDave Watson info); 408fb99bce7SDave Watson 409fb99bce7SDave Watson if (len != sizeof(*crypto_info_aes_gcm_256)) { 410fb99bce7SDave Watson rc = -EINVAL; 411fb99bce7SDave Watson goto out; 412fb99bce7SDave Watson } 413fb99bce7SDave Watson lock_sock(sk); 414fb99bce7SDave Watson memcpy(crypto_info_aes_gcm_256->iv, 415ffa81fa4SYutaro Hayakawa cctx->iv + TLS_CIPHER_AES_GCM_256_SALT_SIZE, 416fb99bce7SDave Watson TLS_CIPHER_AES_GCM_256_IV_SIZE); 417ffa81fa4SYutaro Hayakawa memcpy(crypto_info_aes_gcm_256->rec_seq, cctx->rec_seq, 418fb99bce7SDave Watson TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE); 419fb99bce7SDave Watson release_sock(sk); 420fb99bce7SDave Watson if (copy_to_user(optval, 421fb99bce7SDave Watson crypto_info_aes_gcm_256, 422fb99bce7SDave Watson sizeof(*crypto_info_aes_gcm_256))) 423fb99bce7SDave Watson rc = -EFAULT; 424fb99bce7SDave Watson break; 425fb99bce7SDave Watson } 4263fb59a5dSTianjia Zhang case TLS_CIPHER_AES_CCM_128: { 4273fb59a5dSTianjia Zhang struct tls12_crypto_info_aes_ccm_128 *aes_ccm_128 = 4283fb59a5dSTianjia Zhang container_of(crypto_info, 4293fb59a5dSTianjia Zhang struct tls12_crypto_info_aes_ccm_128, info); 4303fb59a5dSTianjia Zhang 4313fb59a5dSTianjia Zhang if (len != sizeof(*aes_ccm_128)) { 4323fb59a5dSTianjia Zhang rc = -EINVAL; 4333fb59a5dSTianjia Zhang goto out; 4343fb59a5dSTianjia Zhang } 4353fb59a5dSTianjia Zhang lock_sock(sk); 4363fb59a5dSTianjia Zhang memcpy(aes_ccm_128->iv, 4373fb59a5dSTianjia Zhang cctx->iv + TLS_CIPHER_AES_CCM_128_SALT_SIZE, 4383fb59a5dSTianjia Zhang TLS_CIPHER_AES_CCM_128_IV_SIZE); 4393fb59a5dSTianjia Zhang memcpy(aes_ccm_128->rec_seq, cctx->rec_seq, 4403fb59a5dSTianjia Zhang TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE); 4413fb59a5dSTianjia Zhang release_sock(sk); 4423fb59a5dSTianjia Zhang if (copy_to_user(optval, aes_ccm_128, sizeof(*aes_ccm_128))) 4433fb59a5dSTianjia Zhang rc = -EFAULT; 4443fb59a5dSTianjia Zhang break; 4453fb59a5dSTianjia Zhang } 4463fb59a5dSTianjia Zhang case TLS_CIPHER_CHACHA20_POLY1305: { 4473fb59a5dSTianjia Zhang struct tls12_crypto_info_chacha20_poly1305 *chacha20_poly1305 = 4483fb59a5dSTianjia Zhang container_of(crypto_info, 4493fb59a5dSTianjia Zhang struct tls12_crypto_info_chacha20_poly1305, 4503fb59a5dSTianjia Zhang info); 4513fb59a5dSTianjia Zhang 4523fb59a5dSTianjia Zhang if (len != sizeof(*chacha20_poly1305)) { 4533fb59a5dSTianjia Zhang rc = -EINVAL; 4543fb59a5dSTianjia Zhang goto out; 4553fb59a5dSTianjia Zhang } 4563fb59a5dSTianjia Zhang lock_sock(sk); 4573fb59a5dSTianjia Zhang memcpy(chacha20_poly1305->iv, 4583fb59a5dSTianjia Zhang cctx->iv + TLS_CIPHER_CHACHA20_POLY1305_SALT_SIZE, 4593fb59a5dSTianjia Zhang TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE); 4603fb59a5dSTianjia Zhang memcpy(chacha20_poly1305->rec_seq, cctx->rec_seq, 4613fb59a5dSTianjia Zhang TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE); 4623fb59a5dSTianjia Zhang release_sock(sk); 4633fb59a5dSTianjia Zhang if (copy_to_user(optval, chacha20_poly1305, 4643fb59a5dSTianjia Zhang sizeof(*chacha20_poly1305))) 4653fb59a5dSTianjia Zhang rc = -EFAULT; 4663fb59a5dSTianjia Zhang break; 4673fb59a5dSTianjia Zhang } 468227b9644STianjia Zhang case TLS_CIPHER_SM4_GCM: { 469227b9644STianjia Zhang struct tls12_crypto_info_sm4_gcm *sm4_gcm_info = 470227b9644STianjia Zhang container_of(crypto_info, 471227b9644STianjia Zhang struct tls12_crypto_info_sm4_gcm, info); 472227b9644STianjia Zhang 473227b9644STianjia Zhang if (len != sizeof(*sm4_gcm_info)) { 474227b9644STianjia Zhang rc = -EINVAL; 475227b9644STianjia Zhang goto out; 476227b9644STianjia Zhang } 477227b9644STianjia Zhang lock_sock(sk); 478227b9644STianjia Zhang memcpy(sm4_gcm_info->iv, 479227b9644STianjia Zhang cctx->iv + TLS_CIPHER_SM4_GCM_SALT_SIZE, 480227b9644STianjia Zhang TLS_CIPHER_SM4_GCM_IV_SIZE); 481227b9644STianjia Zhang memcpy(sm4_gcm_info->rec_seq, cctx->rec_seq, 482227b9644STianjia Zhang TLS_CIPHER_SM4_GCM_REC_SEQ_SIZE); 483227b9644STianjia Zhang release_sock(sk); 484227b9644STianjia Zhang if (copy_to_user(optval, sm4_gcm_info, sizeof(*sm4_gcm_info))) 485227b9644STianjia Zhang rc = -EFAULT; 486227b9644STianjia Zhang break; 487227b9644STianjia Zhang } 488227b9644STianjia Zhang case TLS_CIPHER_SM4_CCM: { 489227b9644STianjia Zhang struct tls12_crypto_info_sm4_ccm *sm4_ccm_info = 490227b9644STianjia Zhang container_of(crypto_info, 491227b9644STianjia Zhang struct tls12_crypto_info_sm4_ccm, info); 492227b9644STianjia Zhang 493227b9644STianjia Zhang if (len != sizeof(*sm4_ccm_info)) { 494227b9644STianjia Zhang rc = -EINVAL; 495227b9644STianjia Zhang goto out; 496227b9644STianjia Zhang } 497227b9644STianjia Zhang lock_sock(sk); 498227b9644STianjia Zhang memcpy(sm4_ccm_info->iv, 499227b9644STianjia Zhang cctx->iv + TLS_CIPHER_SM4_CCM_SALT_SIZE, 500227b9644STianjia Zhang TLS_CIPHER_SM4_CCM_IV_SIZE); 501227b9644STianjia Zhang memcpy(sm4_ccm_info->rec_seq, cctx->rec_seq, 502227b9644STianjia Zhang TLS_CIPHER_SM4_CCM_REC_SEQ_SIZE); 503227b9644STianjia Zhang release_sock(sk); 504227b9644STianjia Zhang if (copy_to_user(optval, sm4_ccm_info, sizeof(*sm4_ccm_info))) 505227b9644STianjia Zhang rc = -EFAULT; 506227b9644STianjia Zhang break; 507227b9644STianjia Zhang } 5083c4d7559SDave Watson default: 5093c4d7559SDave Watson rc = -EINVAL; 5103c4d7559SDave Watson } 5113c4d7559SDave Watson 5123c4d7559SDave Watson out: 5133c4d7559SDave Watson return rc; 5143c4d7559SDave Watson } 5153c4d7559SDave Watson 516c1318b39SBoris Pismenny static int do_tls_getsockopt_tx_zc(struct sock *sk, char __user *optval, 517c1318b39SBoris Pismenny int __user *optlen) 518c1318b39SBoris Pismenny { 519c1318b39SBoris Pismenny struct tls_context *ctx = tls_get_ctx(sk); 520c1318b39SBoris Pismenny unsigned int value; 521c1318b39SBoris Pismenny int len; 522c1318b39SBoris Pismenny 523c1318b39SBoris Pismenny if (get_user(len, optlen)) 524c1318b39SBoris Pismenny return -EFAULT; 525c1318b39SBoris Pismenny 526c1318b39SBoris Pismenny if (len != sizeof(value)) 527c1318b39SBoris Pismenny return -EINVAL; 528c1318b39SBoris Pismenny 529c1318b39SBoris Pismenny value = ctx->zerocopy_sendfile; 530c1318b39SBoris Pismenny if (copy_to_user(optval, &value, sizeof(value))) 531c1318b39SBoris Pismenny return -EFAULT; 532c1318b39SBoris Pismenny 533c1318b39SBoris Pismenny return 0; 534c1318b39SBoris Pismenny } 535c1318b39SBoris Pismenny 536*88527790SJakub Kicinski static int do_tls_getsockopt_no_pad(struct sock *sk, char __user *optval, 537*88527790SJakub Kicinski int __user *optlen) 538*88527790SJakub Kicinski { 539*88527790SJakub Kicinski struct tls_context *ctx = tls_get_ctx(sk); 540*88527790SJakub Kicinski unsigned int value; 541*88527790SJakub Kicinski int err, len; 542*88527790SJakub Kicinski 543*88527790SJakub Kicinski if (ctx->prot_info.version != TLS_1_3_VERSION) 544*88527790SJakub Kicinski return -EINVAL; 545*88527790SJakub Kicinski 546*88527790SJakub Kicinski if (get_user(len, optlen)) 547*88527790SJakub Kicinski return -EFAULT; 548*88527790SJakub Kicinski if (len < sizeof(value)) 549*88527790SJakub Kicinski return -EINVAL; 550*88527790SJakub Kicinski 551*88527790SJakub Kicinski lock_sock(sk); 552*88527790SJakub Kicinski err = -EINVAL; 553*88527790SJakub Kicinski if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) 554*88527790SJakub Kicinski value = ctx->rx_no_pad; 555*88527790SJakub Kicinski release_sock(sk); 556*88527790SJakub Kicinski if (err) 557*88527790SJakub Kicinski return err; 558*88527790SJakub Kicinski 559*88527790SJakub Kicinski if (put_user(sizeof(value), optlen)) 560*88527790SJakub Kicinski return -EFAULT; 561*88527790SJakub Kicinski if (copy_to_user(optval, &value, sizeof(value))) 562*88527790SJakub Kicinski return -EFAULT; 563*88527790SJakub Kicinski 564*88527790SJakub Kicinski return 0; 565*88527790SJakub Kicinski } 566*88527790SJakub Kicinski 5673c4d7559SDave Watson static int do_tls_getsockopt(struct sock *sk, int optname, 5683c4d7559SDave Watson char __user *optval, int __user *optlen) 5693c4d7559SDave Watson { 5703c4d7559SDave Watson int rc = 0; 5713c4d7559SDave Watson 5723c4d7559SDave Watson switch (optname) { 5733c4d7559SDave Watson case TLS_TX: 574ffa81fa4SYutaro Hayakawa case TLS_RX: 575ffa81fa4SYutaro Hayakawa rc = do_tls_getsockopt_conf(sk, optval, optlen, 576ffa81fa4SYutaro Hayakawa optname == TLS_TX); 5773c4d7559SDave Watson break; 578b489a6e5SMaxim Mikityanskiy case TLS_TX_ZEROCOPY_RO: 579c1318b39SBoris Pismenny rc = do_tls_getsockopt_tx_zc(sk, optval, optlen); 580c1318b39SBoris Pismenny break; 581*88527790SJakub Kicinski case TLS_RX_EXPECT_NO_PAD: 582*88527790SJakub Kicinski rc = do_tls_getsockopt_no_pad(sk, optval, optlen); 583*88527790SJakub Kicinski break; 5843c4d7559SDave Watson default: 5853c4d7559SDave Watson rc = -ENOPROTOOPT; 5863c4d7559SDave Watson break; 5873c4d7559SDave Watson } 5883c4d7559SDave Watson return rc; 5893c4d7559SDave Watson } 5903c4d7559SDave Watson 5913c4d7559SDave Watson static int tls_getsockopt(struct sock *sk, int level, int optname, 5923c4d7559SDave Watson char __user *optval, int __user *optlen) 5933c4d7559SDave Watson { 5943c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 5953c4d7559SDave Watson 5963c4d7559SDave Watson if (level != SOL_TLS) 597be7bbea1SJakub Kicinski return ctx->sk_proto->getsockopt(sk, level, 598be7bbea1SJakub Kicinski optname, optval, optlen); 5993c4d7559SDave Watson 6003c4d7559SDave Watson return do_tls_getsockopt(sk, optname, optval, optlen); 6013c4d7559SDave Watson } 6023c4d7559SDave Watson 603a7b75c5aSChristoph Hellwig static int do_tls_setsockopt_conf(struct sock *sk, sockptr_t optval, 604c46234ebSDave Watson unsigned int optlen, int tx) 6053c4d7559SDave Watson { 606196c31b4SIlya Lesokhin struct tls_crypto_info *crypto_info; 6074509de14SVakul Garg struct tls_crypto_info *alt_crypto_info; 6083c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 609fb99bce7SDave Watson size_t optsize; 6103c4d7559SDave Watson int rc = 0; 61158371585SDave Watson int conf; 6123c4d7559SDave Watson 6131ddcbfbfSZiyang Xuan if (sockptr_is_null(optval) || (optlen < sizeof(*crypto_info))) 6141ddcbfbfSZiyang Xuan return -EINVAL; 6153c4d7559SDave Watson 6164509de14SVakul Garg if (tx) { 61786029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 6184509de14SVakul Garg alt_crypto_info = &ctx->crypto_recv.info; 6194509de14SVakul Garg } else { 62086029d10SSabrina Dubroca crypto_info = &ctx->crypto_recv.info; 6214509de14SVakul Garg alt_crypto_info = &ctx->crypto_send.info; 6224509de14SVakul Garg } 623c46234ebSDave Watson 624196c31b4SIlya Lesokhin /* Currently we don't support set crypto info more than one time */ 6251ddcbfbfSZiyang Xuan if (TLS_CRYPTO_INFO_READY(crypto_info)) 6261ddcbfbfSZiyang Xuan return -EBUSY; 627196c31b4SIlya Lesokhin 628a7b75c5aSChristoph Hellwig rc = copy_from_sockptr(crypto_info, optval, sizeof(*crypto_info)); 6293c4d7559SDave Watson if (rc) { 6303c4d7559SDave Watson rc = -EFAULT; 631257082e6SBoris Pismenny goto err_crypto_info; 6323c4d7559SDave Watson } 6333c4d7559SDave Watson 6343c4d7559SDave Watson /* check version */ 635130b392cSDave Watson if (crypto_info->version != TLS_1_2_VERSION && 636130b392cSDave Watson crypto_info->version != TLS_1_3_VERSION) { 6374a5cdc60SValentin Vidic rc = -EINVAL; 638196c31b4SIlya Lesokhin goto err_crypto_info; 6393c4d7559SDave Watson } 6403c4d7559SDave Watson 6414509de14SVakul Garg /* Ensure that TLS version and ciphers are same in both directions */ 6424509de14SVakul Garg if (TLS_CRYPTO_INFO_READY(alt_crypto_info)) { 6434509de14SVakul Garg if (alt_crypto_info->version != crypto_info->version || 6444509de14SVakul Garg alt_crypto_info->cipher_type != crypto_info->cipher_type) { 6454509de14SVakul Garg rc = -EINVAL; 6464509de14SVakul Garg goto err_crypto_info; 6474509de14SVakul Garg } 6484509de14SVakul Garg } 6494509de14SVakul Garg 650196c31b4SIlya Lesokhin switch (crypto_info->cipher_type) { 651fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_128: 652f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_gcm_128); 653f295b3aeSVakul Garg break; 654fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_256: { 655f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_gcm_256); 656f295b3aeSVakul Garg break; 657f295b3aeSVakul Garg } 658f295b3aeSVakul Garg case TLS_CIPHER_AES_CCM_128: 659f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_ccm_128); 660f295b3aeSVakul Garg break; 66174ea6106SVadim Fedorenko case TLS_CIPHER_CHACHA20_POLY1305: 66274ea6106SVadim Fedorenko optsize = sizeof(struct tls12_crypto_info_chacha20_poly1305); 66374ea6106SVadim Fedorenko break; 664227b9644STianjia Zhang case TLS_CIPHER_SM4_GCM: 665227b9644STianjia Zhang optsize = sizeof(struct tls12_crypto_info_sm4_gcm); 666227b9644STianjia Zhang break; 667227b9644STianjia Zhang case TLS_CIPHER_SM4_CCM: 668227b9644STianjia Zhang optsize = sizeof(struct tls12_crypto_info_sm4_ccm); 669227b9644STianjia Zhang break; 670f295b3aeSVakul Garg default: 671f295b3aeSVakul Garg rc = -EINVAL; 672f295b3aeSVakul Garg goto err_crypto_info; 673f295b3aeSVakul Garg } 674f295b3aeSVakul Garg 675fb99bce7SDave Watson if (optlen != optsize) { 6763c4d7559SDave Watson rc = -EINVAL; 6776db959c8SSabrina Dubroca goto err_crypto_info; 6783c4d7559SDave Watson } 679f295b3aeSVakul Garg 680d3c48151SChristoph Hellwig rc = copy_from_sockptr_offset(crypto_info + 1, optval, 681d3c48151SChristoph Hellwig sizeof(*crypto_info), 682196c31b4SIlya Lesokhin optlen - sizeof(*crypto_info)); 6833c4d7559SDave Watson if (rc) { 6843c4d7559SDave Watson rc = -EFAULT; 6853c4d7559SDave Watson goto err_crypto_info; 6863c4d7559SDave Watson } 6873c4d7559SDave Watson 688c46234ebSDave Watson if (tx) { 689e8f69799SIlya Lesokhin rc = tls_set_device_offload(sk, ctx); 690e8f69799SIlya Lesokhin conf = TLS_HW; 691b32fd3ccSJakub Kicinski if (!rc) { 692b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSTXDEVICE); 693b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXDEVICE); 694b32fd3ccSJakub Kicinski } else { 695c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 1); 696318892acSJakub Kicinski if (rc) 697318892acSJakub Kicinski goto err_crypto_info; 698b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSTXSW); 699b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXSW); 700f66de3eeSBoris Pismenny conf = TLS_SW; 701e8f69799SIlya Lesokhin } 702c46234ebSDave Watson } else { 7034799ac81SBoris Pismenny rc = tls_set_device_offload_rx(sk, ctx); 7044799ac81SBoris Pismenny conf = TLS_HW; 705b32fd3ccSJakub Kicinski if (!rc) { 706b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXDEVICE); 707b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXDEVICE); 708b32fd3ccSJakub Kicinski } else { 709c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 0); 710318892acSJakub Kicinski if (rc) 711318892acSJakub Kicinski goto err_crypto_info; 712b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXSW); 713b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXSW); 714f66de3eeSBoris Pismenny conf = TLS_SW; 715c46234ebSDave Watson } 716313ab004SJohn Fastabend tls_sw_strparser_arm(sk, ctx); 7174799ac81SBoris Pismenny } 718c46234ebSDave Watson 719f66de3eeSBoris Pismenny if (tx) 720f66de3eeSBoris Pismenny ctx->tx_conf = conf; 721f66de3eeSBoris Pismenny else 722f66de3eeSBoris Pismenny ctx->rx_conf = conf; 7236d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 724c46234ebSDave Watson if (tx) { 725ee181e52SIlya Lesokhin ctx->sk_write_space = sk->sk_write_space; 726ee181e52SIlya Lesokhin sk->sk_write_space = tls_write_space; 727c46234ebSDave Watson } 7281ddcbfbfSZiyang Xuan return 0; 7293c4d7559SDave Watson 7303c4d7559SDave Watson err_crypto_info: 731c844eb46SSabrina Dubroca memzero_explicit(crypto_info, sizeof(union tls_crypto_context)); 7323c4d7559SDave Watson return rc; 7333c4d7559SDave Watson } 7343c4d7559SDave Watson 735c1318b39SBoris Pismenny static int do_tls_setsockopt_tx_zc(struct sock *sk, sockptr_t optval, 736c1318b39SBoris Pismenny unsigned int optlen) 737c1318b39SBoris Pismenny { 738c1318b39SBoris Pismenny struct tls_context *ctx = tls_get_ctx(sk); 739c1318b39SBoris Pismenny unsigned int value; 740c1318b39SBoris Pismenny 741c1318b39SBoris Pismenny if (sockptr_is_null(optval) || optlen != sizeof(value)) 742c1318b39SBoris Pismenny return -EINVAL; 743c1318b39SBoris Pismenny 744c1318b39SBoris Pismenny if (copy_from_sockptr(&value, optval, sizeof(value))) 745c1318b39SBoris Pismenny return -EFAULT; 746c1318b39SBoris Pismenny 747c1318b39SBoris Pismenny if (value > 1) 748c1318b39SBoris Pismenny return -EINVAL; 749c1318b39SBoris Pismenny 750c1318b39SBoris Pismenny ctx->zerocopy_sendfile = value; 751c1318b39SBoris Pismenny 752c1318b39SBoris Pismenny return 0; 753c1318b39SBoris Pismenny } 754c1318b39SBoris Pismenny 755*88527790SJakub Kicinski static int do_tls_setsockopt_no_pad(struct sock *sk, sockptr_t optval, 756*88527790SJakub Kicinski unsigned int optlen) 757*88527790SJakub Kicinski { 758*88527790SJakub Kicinski struct tls_context *ctx = tls_get_ctx(sk); 759*88527790SJakub Kicinski u32 val; 760*88527790SJakub Kicinski int rc; 761*88527790SJakub Kicinski 762*88527790SJakub Kicinski if (ctx->prot_info.version != TLS_1_3_VERSION || 763*88527790SJakub Kicinski sockptr_is_null(optval) || optlen < sizeof(val)) 764*88527790SJakub Kicinski return -EINVAL; 765*88527790SJakub Kicinski 766*88527790SJakub Kicinski rc = copy_from_sockptr(&val, optval, sizeof(val)); 767*88527790SJakub Kicinski if (rc) 768*88527790SJakub Kicinski return -EFAULT; 769*88527790SJakub Kicinski if (val > 1) 770*88527790SJakub Kicinski return -EINVAL; 771*88527790SJakub Kicinski rc = check_zeroed_sockptr(optval, sizeof(val), optlen - sizeof(val)); 772*88527790SJakub Kicinski if (rc < 1) 773*88527790SJakub Kicinski return rc == 0 ? -EINVAL : rc; 774*88527790SJakub Kicinski 775*88527790SJakub Kicinski lock_sock(sk); 776*88527790SJakub Kicinski rc = -EINVAL; 777*88527790SJakub Kicinski if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) { 778*88527790SJakub Kicinski ctx->rx_no_pad = val; 779*88527790SJakub Kicinski tls_update_rx_zc_capable(ctx); 780*88527790SJakub Kicinski rc = 0; 781*88527790SJakub Kicinski } 782*88527790SJakub Kicinski release_sock(sk); 783*88527790SJakub Kicinski 784*88527790SJakub Kicinski return rc; 785*88527790SJakub Kicinski } 786*88527790SJakub Kicinski 787a7b75c5aSChristoph Hellwig static int do_tls_setsockopt(struct sock *sk, int optname, sockptr_t optval, 788a7b75c5aSChristoph Hellwig unsigned int optlen) 7893c4d7559SDave Watson { 7903c4d7559SDave Watson int rc = 0; 7913c4d7559SDave Watson 7923c4d7559SDave Watson switch (optname) { 7933c4d7559SDave Watson case TLS_TX: 794c46234ebSDave Watson case TLS_RX: 7953c4d7559SDave Watson lock_sock(sk); 796c46234ebSDave Watson rc = do_tls_setsockopt_conf(sk, optval, optlen, 797c46234ebSDave Watson optname == TLS_TX); 7983c4d7559SDave Watson release_sock(sk); 7993c4d7559SDave Watson break; 800b489a6e5SMaxim Mikityanskiy case TLS_TX_ZEROCOPY_RO: 801c1318b39SBoris Pismenny lock_sock(sk); 802c1318b39SBoris Pismenny rc = do_tls_setsockopt_tx_zc(sk, optval, optlen); 803c1318b39SBoris Pismenny release_sock(sk); 804c1318b39SBoris Pismenny break; 805*88527790SJakub Kicinski case TLS_RX_EXPECT_NO_PAD: 806*88527790SJakub Kicinski rc = do_tls_setsockopt_no_pad(sk, optval, optlen); 807*88527790SJakub Kicinski break; 8083c4d7559SDave Watson default: 8093c4d7559SDave Watson rc = -ENOPROTOOPT; 8103c4d7559SDave Watson break; 8113c4d7559SDave Watson } 8123c4d7559SDave Watson return rc; 8133c4d7559SDave Watson } 8143c4d7559SDave Watson 8153c4d7559SDave Watson static int tls_setsockopt(struct sock *sk, int level, int optname, 816a7b75c5aSChristoph Hellwig sockptr_t optval, unsigned int optlen) 8173c4d7559SDave Watson { 8183c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 8193c4d7559SDave Watson 8203c4d7559SDave Watson if (level != SOL_TLS) 821be7bbea1SJakub Kicinski return ctx->sk_proto->setsockopt(sk, level, optname, optval, 822be7bbea1SJakub Kicinski optlen); 8233c4d7559SDave Watson 8243c4d7559SDave Watson return do_tls_setsockopt(sk, optname, optval, optlen); 8253c4d7559SDave Watson } 8263c4d7559SDave Watson 82708700dabSJakub Kicinski struct tls_context *tls_ctx_create(struct sock *sk) 828dd0bed16SAtul Gupta { 829dd0bed16SAtul Gupta struct inet_connection_sock *icsk = inet_csk(sk); 830dd0bed16SAtul Gupta struct tls_context *ctx; 831dd0bed16SAtul Gupta 832c6ec179aSGanesh Goudar ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC); 833dd0bed16SAtul Gupta if (!ctx) 834dd0bed16SAtul Gupta return NULL; 835dd0bed16SAtul Gupta 83679ffe608SJakub Kicinski mutex_init(&ctx->tx_lock); 83715a7dea7SJakub Kicinski rcu_assign_pointer(icsk->icsk_ulp_data, ctx); 838d5bee737SJakub Sitnicki ctx->sk_proto = READ_ONCE(sk->sk_prot); 839c55dcdd4SMaxim Mikityanskiy ctx->sk = sk; 840dd0bed16SAtul Gupta return ctx; 841dd0bed16SAtul Gupta } 842dd0bed16SAtul Gupta 843f3911f73SJakub Kicinski static void build_proto_ops(struct proto_ops ops[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 844f3911f73SJakub Kicinski const struct proto_ops *base) 845f3911f73SJakub Kicinski { 846f3911f73SJakub Kicinski ops[TLS_BASE][TLS_BASE] = *base; 847f3911f73SJakub Kicinski 848f3911f73SJakub Kicinski ops[TLS_SW ][TLS_BASE] = ops[TLS_BASE][TLS_BASE]; 849f3911f73SJakub Kicinski ops[TLS_SW ][TLS_BASE].sendpage_locked = tls_sw_sendpage_locked; 850f3911f73SJakub Kicinski 851f3911f73SJakub Kicinski ops[TLS_BASE][TLS_SW ] = ops[TLS_BASE][TLS_BASE]; 852f3911f73SJakub Kicinski ops[TLS_BASE][TLS_SW ].splice_read = tls_sw_splice_read; 853f3911f73SJakub Kicinski 854f3911f73SJakub Kicinski ops[TLS_SW ][TLS_SW ] = ops[TLS_SW ][TLS_BASE]; 855f3911f73SJakub Kicinski ops[TLS_SW ][TLS_SW ].splice_read = tls_sw_splice_read; 856f3911f73SJakub Kicinski 857f3911f73SJakub Kicinski #ifdef CONFIG_TLS_DEVICE 858f3911f73SJakub Kicinski ops[TLS_HW ][TLS_BASE] = ops[TLS_BASE][TLS_BASE]; 859f3911f73SJakub Kicinski ops[TLS_HW ][TLS_BASE].sendpage_locked = NULL; 860f3911f73SJakub Kicinski 861f3911f73SJakub Kicinski ops[TLS_HW ][TLS_SW ] = ops[TLS_BASE][TLS_SW ]; 862f3911f73SJakub Kicinski ops[TLS_HW ][TLS_SW ].sendpage_locked = NULL; 863f3911f73SJakub Kicinski 864f3911f73SJakub Kicinski ops[TLS_BASE][TLS_HW ] = ops[TLS_BASE][TLS_SW ]; 865f3911f73SJakub Kicinski 866f3911f73SJakub Kicinski ops[TLS_SW ][TLS_HW ] = ops[TLS_SW ][TLS_SW ]; 867f3911f73SJakub Kicinski 868f3911f73SJakub Kicinski ops[TLS_HW ][TLS_HW ] = ops[TLS_HW ][TLS_SW ]; 869f3911f73SJakub Kicinski ops[TLS_HW ][TLS_HW ].sendpage_locked = NULL; 870f3911f73SJakub Kicinski #endif 871f3911f73SJakub Kicinski #ifdef CONFIG_TLS_TOE 872f3911f73SJakub Kicinski ops[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 873f3911f73SJakub Kicinski #endif 874f3911f73SJakub Kicinski } 875f3911f73SJakub Kicinski 87663a6b3feSAtul Gupta static void tls_build_proto(struct sock *sk) 87763a6b3feSAtul Gupta { 87863a6b3feSAtul Gupta int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 8799a893949SWill Deacon struct proto *prot = READ_ONCE(sk->sk_prot); 88063a6b3feSAtul Gupta 88163a6b3feSAtul Gupta /* Build IPv6 TLS whenever the address of tcpv6 _prot changes */ 88263a6b3feSAtul Gupta if (ip_ver == TLSV6 && 8835bb4c45dSJakub Sitnicki unlikely(prot != smp_load_acquire(&saved_tcpv6_prot))) { 88463a6b3feSAtul Gupta mutex_lock(&tcpv6_prot_mutex); 8855bb4c45dSJakub Sitnicki if (likely(prot != saved_tcpv6_prot)) { 8865bb4c45dSJakub Sitnicki build_protos(tls_prots[TLSV6], prot); 887f3911f73SJakub Kicinski build_proto_ops(tls_proto_ops[TLSV6], 888f3911f73SJakub Kicinski sk->sk_socket->ops); 8895bb4c45dSJakub Sitnicki smp_store_release(&saved_tcpv6_prot, prot); 89063a6b3feSAtul Gupta } 89163a6b3feSAtul Gupta mutex_unlock(&tcpv6_prot_mutex); 89263a6b3feSAtul Gupta } 89363a6b3feSAtul Gupta 89463a6b3feSAtul Gupta if (ip_ver == TLSV4 && 8955bb4c45dSJakub Sitnicki unlikely(prot != smp_load_acquire(&saved_tcpv4_prot))) { 89663a6b3feSAtul Gupta mutex_lock(&tcpv4_prot_mutex); 8975bb4c45dSJakub Sitnicki if (likely(prot != saved_tcpv4_prot)) { 8985bb4c45dSJakub Sitnicki build_protos(tls_prots[TLSV4], prot); 899f3911f73SJakub Kicinski build_proto_ops(tls_proto_ops[TLSV4], 900f3911f73SJakub Kicinski sk->sk_socket->ops); 9015bb4c45dSJakub Sitnicki smp_store_release(&saved_tcpv4_prot, prot); 90263a6b3feSAtul Gupta } 90363a6b3feSAtul Gupta mutex_unlock(&tcpv4_prot_mutex); 90463a6b3feSAtul Gupta } 90563a6b3feSAtul Gupta } 90663a6b3feSAtul Gupta 907f66de3eeSBoris Pismenny static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 908f13fe3e6SJakub Sitnicki const struct proto *base) 909c113187dSBoris Pismenny { 910f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE] = *base; 911f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].setsockopt = tls_setsockopt; 912f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].getsockopt = tls_getsockopt; 913f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].close = tls_sk_proto_close; 914c113187dSBoris Pismenny 915f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 916f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendmsg = tls_sw_sendmsg; 917f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendpage = tls_sw_sendpage; 918c46234ebSDave Watson 919f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW] = prot[TLS_BASE][TLS_BASE]; 920f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].recvmsg = tls_sw_recvmsg; 9217b50ecfcSCong Wang prot[TLS_BASE][TLS_SW].sock_is_readable = tls_sw_sock_is_readable; 922f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].close = tls_sk_proto_close; 923c46234ebSDave Watson 924f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW] = prot[TLS_SW][TLS_BASE]; 925f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].recvmsg = tls_sw_recvmsg; 9267b50ecfcSCong Wang prot[TLS_SW][TLS_SW].sock_is_readable = tls_sw_sock_is_readable; 927f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].close = tls_sk_proto_close; 928dd0bed16SAtul Gupta 929e8f69799SIlya Lesokhin #ifdef CONFIG_TLS_DEVICE 930e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 931e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendmsg = tls_device_sendmsg; 932e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendpage = tls_device_sendpage; 933e8f69799SIlya Lesokhin 934e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW] = prot[TLS_BASE][TLS_SW]; 935e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendmsg = tls_device_sendmsg; 936e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendpage = tls_device_sendpage; 9374799ac81SBoris Pismenny 9384799ac81SBoris Pismenny prot[TLS_BASE][TLS_HW] = prot[TLS_BASE][TLS_SW]; 9394799ac81SBoris Pismenny 9404799ac81SBoris Pismenny prot[TLS_SW][TLS_HW] = prot[TLS_SW][TLS_SW]; 9414799ac81SBoris Pismenny 9424799ac81SBoris Pismenny prot[TLS_HW][TLS_HW] = prot[TLS_HW][TLS_SW]; 943e8f69799SIlya Lesokhin #endif 94453b4414aSJakub Kicinski #ifdef CONFIG_TLS_TOE 945f66de3eeSBoris Pismenny prot[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 9460eb8745eSJakub Kicinski prot[TLS_HW_RECORD][TLS_HW_RECORD].hash = tls_toe_hash; 9470eb8745eSJakub Kicinski prot[TLS_HW_RECORD][TLS_HW_RECORD].unhash = tls_toe_unhash; 94853b4414aSJakub Kicinski #endif 949c113187dSBoris Pismenny } 950c113187dSBoris Pismenny 9513c4d7559SDave Watson static int tls_init(struct sock *sk) 9523c4d7559SDave Watson { 9533c4d7559SDave Watson struct tls_context *ctx; 9543c4d7559SDave Watson int rc = 0; 9553c4d7559SDave Watson 95616bed0e6SJakub Kicinski tls_build_proto(sk); 95716bed0e6SJakub Kicinski 95853b4414aSJakub Kicinski #ifdef CONFIG_TLS_TOE 9590eb8745eSJakub Kicinski if (tls_toe_bypass(sk)) 96095fa1454SJohn Fastabend return 0; 96153b4414aSJakub Kicinski #endif 962dd0bed16SAtul Gupta 963d91c3e17SIlya Lesokhin /* The TLS ulp is currently supported only for TCP sockets 964d91c3e17SIlya Lesokhin * in ESTABLISHED state. 965d91c3e17SIlya Lesokhin * Supporting sockets in LISTEN state will require us 966d91c3e17SIlya Lesokhin * to modify the accept implementation to clone rather then 967d91c3e17SIlya Lesokhin * share the ulp context. 968d91c3e17SIlya Lesokhin */ 969d91c3e17SIlya Lesokhin if (sk->sk_state != TCP_ESTABLISHED) 9704a5cdc60SValentin Vidic return -ENOTCONN; 971d91c3e17SIlya Lesokhin 9723c4d7559SDave Watson /* allocate tls context */ 97395fa1454SJohn Fastabend write_lock_bh(&sk->sk_callback_lock); 97408700dabSJakub Kicinski ctx = tls_ctx_create(sk); 9753c4d7559SDave Watson if (!ctx) { 9763c4d7559SDave Watson rc = -ENOMEM; 9773c4d7559SDave Watson goto out; 9783c4d7559SDave Watson } 9796d88207fSIlya Lesokhin 980f66de3eeSBoris Pismenny ctx->tx_conf = TLS_BASE; 981f66de3eeSBoris Pismenny ctx->rx_conf = TLS_BASE; 9826d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 9833c4d7559SDave Watson out: 98495fa1454SJohn Fastabend write_unlock_bh(&sk->sk_callback_lock); 9853c4d7559SDave Watson return rc; 9863c4d7559SDave Watson } 9873c4d7559SDave Watson 98833bfe20dSJohn Fastabend static void tls_update(struct sock *sk, struct proto *p, 98933bfe20dSJohn Fastabend void (*write_space)(struct sock *sk)) 99095fa1454SJohn Fastabend { 99195fa1454SJohn Fastabend struct tls_context *ctx; 99295fa1454SJohn Fastabend 993e34a07c0SJakub Kicinski WARN_ON_ONCE(sk->sk_prot == p); 994e34a07c0SJakub Kicinski 99595fa1454SJohn Fastabend ctx = tls_get_ctx(sk); 99633bfe20dSJohn Fastabend if (likely(ctx)) { 99733bfe20dSJohn Fastabend ctx->sk_write_space = write_space; 99895fa1454SJohn Fastabend ctx->sk_proto = p; 99933bfe20dSJohn Fastabend } else { 1000b8e202d1SJakub Sitnicki /* Pairs with lockless read in sk_clone_lock(). */ 1001b8e202d1SJakub Sitnicki WRITE_ONCE(sk->sk_prot, p); 100233bfe20dSJohn Fastabend sk->sk_write_space = write_space; 100333bfe20dSJohn Fastabend } 100495fa1454SJohn Fastabend } 100595fa1454SJohn Fastabend 100626811cc9SDavide Caratti static int tls_get_info(const struct sock *sk, struct sk_buff *skb) 100726811cc9SDavide Caratti { 100826811cc9SDavide Caratti u16 version, cipher_type; 100926811cc9SDavide Caratti struct tls_context *ctx; 101026811cc9SDavide Caratti struct nlattr *start; 101126811cc9SDavide Caratti int err; 101226811cc9SDavide Caratti 101326811cc9SDavide Caratti start = nla_nest_start_noflag(skb, INET_ULP_INFO_TLS); 101426811cc9SDavide Caratti if (!start) 101526811cc9SDavide Caratti return -EMSGSIZE; 101626811cc9SDavide Caratti 101726811cc9SDavide Caratti rcu_read_lock(); 101826811cc9SDavide Caratti ctx = rcu_dereference(inet_csk(sk)->icsk_ulp_data); 101926811cc9SDavide Caratti if (!ctx) { 102026811cc9SDavide Caratti err = 0; 102126811cc9SDavide Caratti goto nla_failure; 102226811cc9SDavide Caratti } 102326811cc9SDavide Caratti version = ctx->prot_info.version; 102426811cc9SDavide Caratti if (version) { 102526811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_VERSION, version); 102626811cc9SDavide Caratti if (err) 102726811cc9SDavide Caratti goto nla_failure; 102826811cc9SDavide Caratti } 102926811cc9SDavide Caratti cipher_type = ctx->prot_info.cipher_type; 103026811cc9SDavide Caratti if (cipher_type) { 103126811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_CIPHER, cipher_type); 103226811cc9SDavide Caratti if (err) 103326811cc9SDavide Caratti goto nla_failure; 103426811cc9SDavide Caratti } 103526811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_TXCONF, tls_user_config(ctx, true)); 103626811cc9SDavide Caratti if (err) 103726811cc9SDavide Caratti goto nla_failure; 103826811cc9SDavide Caratti 103926811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_RXCONF, tls_user_config(ctx, false)); 104026811cc9SDavide Caratti if (err) 104126811cc9SDavide Caratti goto nla_failure; 104226811cc9SDavide Caratti 1043c1318b39SBoris Pismenny if (ctx->tx_conf == TLS_HW && ctx->zerocopy_sendfile) { 1044b489a6e5SMaxim Mikityanskiy err = nla_put_flag(skb, TLS_INFO_ZC_RO_TX); 1045c1318b39SBoris Pismenny if (err) 1046c1318b39SBoris Pismenny goto nla_failure; 1047c1318b39SBoris Pismenny } 1048*88527790SJakub Kicinski if (ctx->rx_no_pad) { 1049*88527790SJakub Kicinski err = nla_put_flag(skb, TLS_INFO_RX_NO_PAD); 1050*88527790SJakub Kicinski if (err) 1051*88527790SJakub Kicinski goto nla_failure; 1052*88527790SJakub Kicinski } 1053c1318b39SBoris Pismenny 105426811cc9SDavide Caratti rcu_read_unlock(); 105526811cc9SDavide Caratti nla_nest_end(skb, start); 105626811cc9SDavide Caratti return 0; 105726811cc9SDavide Caratti 105826811cc9SDavide Caratti nla_failure: 105926811cc9SDavide Caratti rcu_read_unlock(); 106026811cc9SDavide Caratti nla_nest_cancel(skb, start); 106126811cc9SDavide Caratti return err; 106226811cc9SDavide Caratti } 106326811cc9SDavide Caratti 106426811cc9SDavide Caratti static size_t tls_get_info_size(const struct sock *sk) 106526811cc9SDavide Caratti { 106626811cc9SDavide Caratti size_t size = 0; 106726811cc9SDavide Caratti 106826811cc9SDavide Caratti size += nla_total_size(0) + /* INET_ULP_INFO_TLS */ 106926811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_VERSION */ 107026811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_CIPHER */ 107126811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_RXCONF */ 107226811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_TXCONF */ 1073b489a6e5SMaxim Mikityanskiy nla_total_size(0) + /* TLS_INFO_ZC_RO_TX */ 1074*88527790SJakub Kicinski nla_total_size(0) + /* TLS_INFO_RX_NO_PAD */ 107526811cc9SDavide Caratti 0; 107626811cc9SDavide Caratti 107726811cc9SDavide Caratti return size; 107826811cc9SDavide Caratti } 107926811cc9SDavide Caratti 1080d26b698dSJakub Kicinski static int __net_init tls_init_net(struct net *net) 1081d26b698dSJakub Kicinski { 1082d26b698dSJakub Kicinski int err; 1083d26b698dSJakub Kicinski 1084d26b698dSJakub Kicinski net->mib.tls_statistics = alloc_percpu(struct linux_tls_mib); 1085d26b698dSJakub Kicinski if (!net->mib.tls_statistics) 1086d26b698dSJakub Kicinski return -ENOMEM; 1087d26b698dSJakub Kicinski 1088d26b698dSJakub Kicinski err = tls_proc_init(net); 1089d26b698dSJakub Kicinski if (err) 1090d26b698dSJakub Kicinski goto err_free_stats; 1091d26b698dSJakub Kicinski 1092d26b698dSJakub Kicinski return 0; 1093d26b698dSJakub Kicinski err_free_stats: 1094d26b698dSJakub Kicinski free_percpu(net->mib.tls_statistics); 1095d26b698dSJakub Kicinski return err; 1096d26b698dSJakub Kicinski } 1097d26b698dSJakub Kicinski 1098d26b698dSJakub Kicinski static void __net_exit tls_exit_net(struct net *net) 1099d26b698dSJakub Kicinski { 1100d26b698dSJakub Kicinski tls_proc_fini(net); 1101d26b698dSJakub Kicinski free_percpu(net->mib.tls_statistics); 1102d26b698dSJakub Kicinski } 1103d26b698dSJakub Kicinski 1104d26b698dSJakub Kicinski static struct pernet_operations tls_proc_ops = { 1105d26b698dSJakub Kicinski .init = tls_init_net, 1106d26b698dSJakub Kicinski .exit = tls_exit_net, 1107d26b698dSJakub Kicinski }; 1108d26b698dSJakub Kicinski 11093c4d7559SDave Watson static struct tcp_ulp_ops tcp_tls_ulp_ops __read_mostly = { 11103c4d7559SDave Watson .name = "tls", 11113c4d7559SDave Watson .owner = THIS_MODULE, 11123c4d7559SDave Watson .init = tls_init, 111395fa1454SJohn Fastabend .update = tls_update, 111426811cc9SDavide Caratti .get_info = tls_get_info, 111526811cc9SDavide Caratti .get_info_size = tls_get_info_size, 11163c4d7559SDave Watson }; 11173c4d7559SDave Watson 11183c4d7559SDave Watson static int __init tls_register(void) 11193c4d7559SDave Watson { 1120d26b698dSJakub Kicinski int err; 1121d26b698dSJakub Kicinski 1122d26b698dSJakub Kicinski err = register_pernet_subsys(&tls_proc_ops); 1123d26b698dSJakub Kicinski if (err) 1124d26b698dSJakub Kicinski return err; 1125d26b698dSJakub Kicinski 1126e8f69799SIlya Lesokhin tls_device_init(); 11273c4d7559SDave Watson tcp_register_ulp(&tcp_tls_ulp_ops); 11283c4d7559SDave Watson 11293c4d7559SDave Watson return 0; 11303c4d7559SDave Watson } 11313c4d7559SDave Watson 11323c4d7559SDave Watson static void __exit tls_unregister(void) 11333c4d7559SDave Watson { 11343c4d7559SDave Watson tcp_unregister_ulp(&tcp_tls_ulp_ops); 1135e8f69799SIlya Lesokhin tls_device_cleanup(); 1136d26b698dSJakub Kicinski unregister_pernet_subsys(&tls_proc_ops); 11373c4d7559SDave Watson } 11383c4d7559SDave Watson 11393c4d7559SDave Watson module_init(tls_register); 11403c4d7559SDave Watson module_exit(tls_unregister); 1141