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 4858790314SJakub Kicinski #include "tls.h" 4958790314SJakub Kicinski 503c4d7559SDave Watson MODULE_AUTHOR("Mellanox Technologies"); 513c4d7559SDave Watson MODULE_DESCRIPTION("Transport Layer Security Support"); 523c4d7559SDave Watson MODULE_LICENSE("Dual BSD/GPL"); 53037b0b86SDaniel Borkmann MODULE_ALIAS_TCP_ULP("tls"); 543c4d7559SDave Watson 556d88207fSIlya Lesokhin enum { 56c113187dSBoris Pismenny TLSV4, 57c113187dSBoris Pismenny TLSV6, 58c113187dSBoris Pismenny TLS_NUM_PROTS, 59c113187dSBoris Pismenny }; 606d88207fSIlya Lesokhin 612d2c5ea2STariq Toukan #define CIPHER_SIZE_DESC(cipher) [cipher] = { \ 622d2c5ea2STariq Toukan .iv = cipher ## _IV_SIZE, \ 632d2c5ea2STariq Toukan .key = cipher ## _KEY_SIZE, \ 642d2c5ea2STariq Toukan .salt = cipher ## _SALT_SIZE, \ 652d2c5ea2STariq Toukan .tag = cipher ## _TAG_SIZE, \ 662d2c5ea2STariq Toukan .rec_seq = cipher ## _REC_SEQ_SIZE, \ 672d2c5ea2STariq Toukan } 682d2c5ea2STariq Toukan 692d2c5ea2STariq Toukan const struct tls_cipher_size_desc tls_cipher_size_desc[] = { 702d2c5ea2STariq Toukan CIPHER_SIZE_DESC(TLS_CIPHER_AES_GCM_128), 712d2c5ea2STariq Toukan CIPHER_SIZE_DESC(TLS_CIPHER_AES_GCM_256), 722d2c5ea2STariq Toukan CIPHER_SIZE_DESC(TLS_CIPHER_AES_CCM_128), 732d2c5ea2STariq Toukan CIPHER_SIZE_DESC(TLS_CIPHER_CHACHA20_POLY1305), 742d2c5ea2STariq Toukan CIPHER_SIZE_DESC(TLS_CIPHER_SM4_GCM), 752d2c5ea2STariq Toukan CIPHER_SIZE_DESC(TLS_CIPHER_SM4_CCM), 762d2c5ea2STariq Toukan }; 772d2c5ea2STariq Toukan 78f691a25cSArnd Bergmann static const struct proto *saved_tcpv6_prot; 79c113187dSBoris Pismenny static DEFINE_MUTEX(tcpv6_prot_mutex); 80f691a25cSArnd Bergmann static const struct proto *saved_tcpv4_prot; 8128cb6f1eSJohn Fastabend static DEFINE_MUTEX(tcpv4_prot_mutex); 82f66de3eeSBoris Pismenny static struct proto tls_prots[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG]; 83f3911f73SJakub Kicinski static struct proto_ops tls_proto_ops[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG]; 8463a6b3feSAtul Gupta static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 85f13fe3e6SJakub Sitnicki const struct proto *base); 866d88207fSIlya Lesokhin 8708700dabSJakub Kicinski void update_sk_prot(struct sock *sk, struct tls_context *ctx) 886d88207fSIlya Lesokhin { 89c113187dSBoris Pismenny int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 90c113187dSBoris Pismenny 91d5bee737SJakub Sitnicki WRITE_ONCE(sk->sk_prot, 92d5bee737SJakub Sitnicki &tls_prots[ip_ver][ctx->tx_conf][ctx->rx_conf]); 93f3911f73SJakub Kicinski WRITE_ONCE(sk->sk_socket->ops, 94f3911f73SJakub Kicinski &tls_proto_ops[ip_ver][ctx->tx_conf][ctx->rx_conf]); 956d88207fSIlya Lesokhin } 963c4d7559SDave Watson 973c4d7559SDave Watson int wait_on_pending_writer(struct sock *sk, long *timeo) 983c4d7559SDave Watson { 993c4d7559SDave Watson int rc = 0; 1003c4d7559SDave Watson DEFINE_WAIT_FUNC(wait, woken_wake_function); 1013c4d7559SDave Watson 1023c4d7559SDave Watson add_wait_queue(sk_sleep(sk), &wait); 1033c4d7559SDave Watson while (1) { 1043c4d7559SDave Watson if (!*timeo) { 1053c4d7559SDave Watson rc = -EAGAIN; 1063c4d7559SDave Watson break; 1073c4d7559SDave Watson } 1083c4d7559SDave Watson 1093c4d7559SDave Watson if (signal_pending(current)) { 1103c4d7559SDave Watson rc = sock_intr_errno(*timeo); 1113c4d7559SDave Watson break; 1123c4d7559SDave Watson } 1133c4d7559SDave Watson 1143c4d7559SDave Watson if (sk_wait_event(sk, timeo, !sk->sk_write_pending, &wait)) 1153c4d7559SDave Watson break; 1163c4d7559SDave Watson } 1173c4d7559SDave Watson remove_wait_queue(sk_sleep(sk), &wait); 1183c4d7559SDave Watson return rc; 1193c4d7559SDave Watson } 1203c4d7559SDave Watson 1213c4d7559SDave Watson int tls_push_sg(struct sock *sk, 1223c4d7559SDave Watson struct tls_context *ctx, 1233c4d7559SDave Watson struct scatterlist *sg, 1243c4d7559SDave Watson u16 first_offset, 1253c4d7559SDave Watson int flags) 1263c4d7559SDave Watson { 1273c4d7559SDave Watson int sendpage_flags = flags | MSG_SENDPAGE_NOTLAST; 1283c4d7559SDave Watson int ret = 0; 1293c4d7559SDave Watson struct page *p; 1303c4d7559SDave Watson size_t size; 1313c4d7559SDave Watson int offset = first_offset; 1323c4d7559SDave Watson 1333c4d7559SDave Watson size = sg->length - offset; 1343c4d7559SDave Watson offset += sg->offset; 1353c4d7559SDave Watson 136c212d2c7SDave Watson ctx->in_tcp_sendpages = true; 1373c4d7559SDave Watson while (1) { 1383c4d7559SDave Watson if (sg_is_last(sg)) 1393c4d7559SDave Watson sendpage_flags = flags; 1403c4d7559SDave Watson 1413c4d7559SDave Watson /* is sending application-limited? */ 1423c4d7559SDave Watson tcp_rate_check_app_limited(sk); 1433c4d7559SDave Watson p = sg_page(sg); 1443c4d7559SDave Watson retry: 1453c4d7559SDave Watson ret = do_tcp_sendpages(sk, p, offset, size, sendpage_flags); 1463c4d7559SDave Watson 1473c4d7559SDave Watson if (ret != size) { 1483c4d7559SDave Watson if (ret > 0) { 1493c4d7559SDave Watson offset += ret; 1503c4d7559SDave Watson size -= ret; 1513c4d7559SDave Watson goto retry; 1523c4d7559SDave Watson } 1533c4d7559SDave Watson 1543c4d7559SDave Watson offset -= sg->offset; 1553c4d7559SDave Watson ctx->partially_sent_offset = offset; 1563c4d7559SDave Watson ctx->partially_sent_record = (void *)sg; 157080324c3SAndre Tomt ctx->in_tcp_sendpages = false; 1583c4d7559SDave Watson return ret; 1593c4d7559SDave Watson } 1603c4d7559SDave Watson 1613c4d7559SDave Watson put_page(p); 1623c4d7559SDave Watson sk_mem_uncharge(sk, sg->length); 1633c4d7559SDave Watson sg = sg_next(sg); 1643c4d7559SDave Watson if (!sg) 1653c4d7559SDave Watson break; 1663c4d7559SDave Watson 1673c4d7559SDave Watson offset = sg->offset; 1683c4d7559SDave Watson size = sg->length; 1693c4d7559SDave Watson } 1703c4d7559SDave Watson 171c212d2c7SDave Watson ctx->in_tcp_sendpages = false; 1723c4d7559SDave Watson 1733c4d7559SDave Watson return 0; 1743c4d7559SDave Watson } 1753c4d7559SDave Watson 1763c4d7559SDave Watson static int tls_handle_open_record(struct sock *sk, int flags) 1773c4d7559SDave Watson { 1783c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 1793c4d7559SDave Watson 1803c4d7559SDave Watson if (tls_is_pending_open_record(ctx)) 1813c4d7559SDave Watson return ctx->push_pending_record(sk, flags); 1823c4d7559SDave Watson 1833c4d7559SDave Watson return 0; 1843c4d7559SDave Watson } 1853c4d7559SDave Watson 18658790314SJakub Kicinski int tls_process_cmsg(struct sock *sk, struct msghdr *msg, 1873c4d7559SDave Watson unsigned char *record_type) 1883c4d7559SDave Watson { 1893c4d7559SDave Watson struct cmsghdr *cmsg; 1903c4d7559SDave Watson int rc = -EINVAL; 1913c4d7559SDave Watson 1923c4d7559SDave Watson for_each_cmsghdr(cmsg, msg) { 1933c4d7559SDave Watson if (!CMSG_OK(msg, cmsg)) 1943c4d7559SDave Watson return -EINVAL; 1953c4d7559SDave Watson if (cmsg->cmsg_level != SOL_TLS) 1963c4d7559SDave Watson continue; 1973c4d7559SDave Watson 1983c4d7559SDave Watson switch (cmsg->cmsg_type) { 1993c4d7559SDave Watson case TLS_SET_RECORD_TYPE: 2003c4d7559SDave Watson if (cmsg->cmsg_len < CMSG_LEN(sizeof(*record_type))) 2013c4d7559SDave Watson return -EINVAL; 2023c4d7559SDave Watson 2033c4d7559SDave Watson if (msg->msg_flags & MSG_MORE) 2043c4d7559SDave Watson return -EINVAL; 2053c4d7559SDave Watson 2063c4d7559SDave Watson rc = tls_handle_open_record(sk, msg->msg_flags); 2073c4d7559SDave Watson if (rc) 2083c4d7559SDave Watson return rc; 2093c4d7559SDave Watson 2103c4d7559SDave Watson *record_type = *(unsigned char *)CMSG_DATA(cmsg); 2113c4d7559SDave Watson rc = 0; 2123c4d7559SDave Watson break; 2133c4d7559SDave Watson default: 2143c4d7559SDave Watson return -EINVAL; 2153c4d7559SDave Watson } 2163c4d7559SDave Watson } 2173c4d7559SDave Watson 2183c4d7559SDave Watson return rc; 2193c4d7559SDave Watson } 2203c4d7559SDave Watson 221a42055e8SVakul Garg int tls_push_partial_record(struct sock *sk, struct tls_context *ctx, 222a42055e8SVakul Garg int flags) 2233c4d7559SDave Watson { 2243c4d7559SDave Watson struct scatterlist *sg; 2253c4d7559SDave Watson u16 offset; 2263c4d7559SDave Watson 2273c4d7559SDave Watson sg = ctx->partially_sent_record; 2283c4d7559SDave Watson offset = ctx->partially_sent_offset; 2293c4d7559SDave Watson 2303c4d7559SDave Watson ctx->partially_sent_record = NULL; 2313c4d7559SDave Watson return tls_push_sg(sk, ctx, sg, offset, flags); 2323c4d7559SDave Watson } 2333c4d7559SDave Watson 234c5daa6ccSJakub Kicinski void tls_free_partial_record(struct sock *sk, struct tls_context *ctx) 23535b71a34SJakub Kicinski { 23635b71a34SJakub Kicinski struct scatterlist *sg; 23735b71a34SJakub Kicinski 238c5daa6ccSJakub Kicinski for (sg = ctx->partially_sent_record; sg; sg = sg_next(sg)) { 23935b71a34SJakub Kicinski put_page(sg_page(sg)); 24035b71a34SJakub Kicinski sk_mem_uncharge(sk, sg->length); 24135b71a34SJakub Kicinski } 24235b71a34SJakub Kicinski ctx->partially_sent_record = NULL; 24335b71a34SJakub Kicinski } 24435b71a34SJakub Kicinski 2453c4d7559SDave Watson static void tls_write_space(struct sock *sk) 2463c4d7559SDave Watson { 2473c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 2483c4d7559SDave Watson 24967db7cd2SJohn Fastabend /* If in_tcp_sendpages call lower protocol write space handler 25067db7cd2SJohn Fastabend * to ensure we wake up any waiting operations there. For example 25167db7cd2SJohn Fastabend * if do_tcp_sendpages where to call sk_wait_event. 25267db7cd2SJohn Fastabend */ 25367db7cd2SJohn Fastabend if (ctx->in_tcp_sendpages) { 25467db7cd2SJohn Fastabend ctx->sk_write_space(sk); 255c212d2c7SDave Watson return; 25667db7cd2SJohn Fastabend } 257c212d2c7SDave Watson 2587463d3a2SBoris Pismenny #ifdef CONFIG_TLS_DEVICE 2597463d3a2SBoris Pismenny if (ctx->tx_conf == TLS_HW) 2607463d3a2SBoris Pismenny tls_device_write_space(sk, ctx); 2617463d3a2SBoris Pismenny else 2627463d3a2SBoris Pismenny #endif 2637463d3a2SBoris Pismenny tls_sw_write_space(sk, ctx); 2644504ab0eSVakul Garg 2654504ab0eSVakul Garg ctx->sk_write_space(sk); 2663c4d7559SDave Watson } 2673c4d7559SDave Watson 26815a7dea7SJakub Kicinski /** 26915a7dea7SJakub Kicinski * tls_ctx_free() - free TLS ULP context 27015a7dea7SJakub Kicinski * @sk: socket to with @ctx is attached 27115a7dea7SJakub Kicinski * @ctx: TLS context structure 27215a7dea7SJakub Kicinski * 27315a7dea7SJakub Kicinski * Free TLS context. If @sk is %NULL caller guarantees that the socket 27415a7dea7SJakub Kicinski * to which @ctx was attached has no outstanding references. 27515a7dea7SJakub Kicinski */ 27615a7dea7SJakub Kicinski void tls_ctx_free(struct sock *sk, struct tls_context *ctx) 27786029d10SSabrina Dubroca { 27886029d10SSabrina Dubroca if (!ctx) 27986029d10SSabrina Dubroca return; 28086029d10SSabrina Dubroca 28186029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_send, sizeof(ctx->crypto_send)); 28286029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_recv, sizeof(ctx->crypto_recv)); 28379ffe608SJakub Kicinski mutex_destroy(&ctx->tx_lock); 28415a7dea7SJakub Kicinski 28515a7dea7SJakub Kicinski if (sk) 28615a7dea7SJakub Kicinski kfree_rcu(ctx, rcu); 28715a7dea7SJakub Kicinski else 28886029d10SSabrina Dubroca kfree(ctx); 28986029d10SSabrina Dubroca } 29086029d10SSabrina Dubroca 291313ab004SJohn Fastabend static void tls_sk_proto_cleanup(struct sock *sk, 292313ab004SJohn Fastabend struct tls_context *ctx, long timeo) 2933c4d7559SDave Watson { 2949354544cSDirk van der Merwe if (unlikely(sk->sk_write_pending) && 2959354544cSDirk van der Merwe !wait_on_pending_writer(sk, &timeo)) 2963c4d7559SDave Watson tls_handle_open_record(sk, 0); 2973c4d7559SDave Watson 298f66de3eeSBoris Pismenny /* We need these for tls_sw_fallback handling of other packets */ 299f66de3eeSBoris Pismenny if (ctx->tx_conf == TLS_SW) { 300dbe42559SDave Watson kfree(ctx->tx.rec_seq); 301dbe42559SDave Watson kfree(ctx->tx.iv); 302313ab004SJohn Fastabend tls_sw_release_resources_tx(sk); 303b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXSW); 30435b71a34SJakub Kicinski } else if (ctx->tx_conf == TLS_HW) { 30535b71a34SJakub Kicinski tls_device_free_resources_tx(sk); 306b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXDEVICE); 307f66de3eeSBoris Pismenny } 308f66de3eeSBoris Pismenny 309b32fd3ccSJakub Kicinski if (ctx->rx_conf == TLS_SW) { 310313ab004SJohn Fastabend tls_sw_release_resources_rx(sk); 311b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXSW); 312b32fd3ccSJakub Kicinski } else if (ctx->rx_conf == TLS_HW) { 3134799ac81SBoris Pismenny tls_device_offload_cleanup_rx(sk); 314b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXDEVICE); 315b32fd3ccSJakub Kicinski } 316e8f69799SIlya Lesokhin } 317e8f69799SIlya Lesokhin 318313ab004SJohn Fastabend static void tls_sk_proto_close(struct sock *sk, long timeout) 319313ab004SJohn Fastabend { 32095fa1454SJohn Fastabend struct inet_connection_sock *icsk = inet_csk(sk); 321313ab004SJohn Fastabend struct tls_context *ctx = tls_get_ctx(sk); 322313ab004SJohn Fastabend long timeo = sock_sndtimeo(sk, 0); 323313ab004SJohn Fastabend bool free_ctx; 324313ab004SJohn Fastabend 325313ab004SJohn Fastabend if (ctx->tx_conf == TLS_SW) 326313ab004SJohn Fastabend tls_sw_cancel_work_tx(ctx); 327313ab004SJohn Fastabend 328313ab004SJohn Fastabend lock_sock(sk); 329313ab004SJohn Fastabend free_ctx = ctx->tx_conf != TLS_HW && ctx->rx_conf != TLS_HW; 330313ab004SJohn Fastabend 331313ab004SJohn Fastabend if (ctx->tx_conf != TLS_BASE || ctx->rx_conf != TLS_BASE) 332313ab004SJohn Fastabend tls_sk_proto_cleanup(sk, ctx, timeo); 333313ab004SJohn Fastabend 33495fa1454SJohn Fastabend write_lock_bh(&sk->sk_callback_lock); 33595fa1454SJohn Fastabend if (free_ctx) 33615a7dea7SJakub Kicinski rcu_assign_pointer(icsk->icsk_ulp_data, NULL); 337d5bee737SJakub Sitnicki WRITE_ONCE(sk->sk_prot, ctx->sk_proto); 338d85f0177SJohn Fastabend if (sk->sk_write_space == tls_write_space) 33957c722e9SJakub Kicinski sk->sk_write_space = ctx->sk_write_space; 34095fa1454SJohn Fastabend write_unlock_bh(&sk->sk_callback_lock); 3413c4d7559SDave Watson release_sock(sk); 342313ab004SJohn Fastabend if (ctx->tx_conf == TLS_SW) 343313ab004SJohn Fastabend tls_sw_free_ctx_tx(ctx); 344313ab004SJohn Fastabend if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) 345313ab004SJohn Fastabend tls_sw_strparser_done(ctx); 346313ab004SJohn Fastabend if (ctx->rx_conf == TLS_SW) 347313ab004SJohn Fastabend tls_sw_free_ctx_rx(ctx); 348be7bbea1SJakub Kicinski ctx->sk_proto->close(sk, timeout); 349313ab004SJohn Fastabend 35098f0a395SEric Dumazet if (free_ctx) 35115a7dea7SJakub Kicinski tls_ctx_free(sk, ctx); 3523c4d7559SDave Watson } 3533c4d7559SDave Watson 354ffa81fa4SYutaro Hayakawa static int do_tls_getsockopt_conf(struct sock *sk, char __user *optval, 355ffa81fa4SYutaro Hayakawa int __user *optlen, int tx) 3563c4d7559SDave Watson { 3573c4d7559SDave Watson int rc = 0; 3583c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 3593c4d7559SDave Watson struct tls_crypto_info *crypto_info; 360ffa81fa4SYutaro Hayakawa struct cipher_context *cctx; 3613c4d7559SDave Watson int len; 3623c4d7559SDave Watson 3633c4d7559SDave Watson if (get_user(len, optlen)) 3643c4d7559SDave Watson return -EFAULT; 3653c4d7559SDave Watson 3663c4d7559SDave Watson if (!optval || (len < sizeof(*crypto_info))) { 3673c4d7559SDave Watson rc = -EINVAL; 3683c4d7559SDave Watson goto out; 3693c4d7559SDave Watson } 3703c4d7559SDave Watson 3713c4d7559SDave Watson if (!ctx) { 3723c4d7559SDave Watson rc = -EBUSY; 3733c4d7559SDave Watson goto out; 3743c4d7559SDave Watson } 3753c4d7559SDave Watson 3763c4d7559SDave Watson /* get user crypto info */ 377ffa81fa4SYutaro Hayakawa if (tx) { 37886029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 379ffa81fa4SYutaro Hayakawa cctx = &ctx->tx; 380ffa81fa4SYutaro Hayakawa } else { 381ffa81fa4SYutaro Hayakawa crypto_info = &ctx->crypto_recv.info; 382ffa81fa4SYutaro Hayakawa cctx = &ctx->rx; 383ffa81fa4SYutaro Hayakawa } 3843c4d7559SDave Watson 3853c4d7559SDave Watson if (!TLS_CRYPTO_INFO_READY(crypto_info)) { 3863c4d7559SDave Watson rc = -EBUSY; 3873c4d7559SDave Watson goto out; 3883c4d7559SDave Watson } 3893c4d7559SDave Watson 3905a3b886cSMatthias Rosenfelder if (len == sizeof(*crypto_info)) { 391ac55cd61SDan Carpenter if (copy_to_user(optval, crypto_info, sizeof(*crypto_info))) 392ac55cd61SDan Carpenter rc = -EFAULT; 3933c4d7559SDave Watson goto out; 3943c4d7559SDave Watson } 3953c4d7559SDave Watson 3963c4d7559SDave Watson switch (crypto_info->cipher_type) { 3973c4d7559SDave Watson case TLS_CIPHER_AES_GCM_128: { 3983c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128 * 3993c4d7559SDave Watson crypto_info_aes_gcm_128 = 4003c4d7559SDave Watson container_of(crypto_info, 4013c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128, 4023c4d7559SDave Watson info); 4033c4d7559SDave Watson 4043c4d7559SDave Watson if (len != sizeof(*crypto_info_aes_gcm_128)) { 4053c4d7559SDave Watson rc = -EINVAL; 4063c4d7559SDave Watson goto out; 4073c4d7559SDave Watson } 4083c4d7559SDave Watson lock_sock(sk); 409a1dfa681SBoris Pismenny memcpy(crypto_info_aes_gcm_128->iv, 410ffa81fa4SYutaro Hayakawa cctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, 4113c4d7559SDave Watson TLS_CIPHER_AES_GCM_128_IV_SIZE); 412ffa81fa4SYutaro Hayakawa memcpy(crypto_info_aes_gcm_128->rec_seq, cctx->rec_seq, 413c410c196SBoris Pismenny TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE); 4143c4d7559SDave Watson release_sock(sk); 415ac55cd61SDan Carpenter if (copy_to_user(optval, 4163c4d7559SDave Watson crypto_info_aes_gcm_128, 417ac55cd61SDan Carpenter sizeof(*crypto_info_aes_gcm_128))) 418ac55cd61SDan Carpenter rc = -EFAULT; 4193c4d7559SDave Watson break; 4203c4d7559SDave Watson } 421fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_256: { 422fb99bce7SDave Watson struct tls12_crypto_info_aes_gcm_256 * 423fb99bce7SDave Watson crypto_info_aes_gcm_256 = 424fb99bce7SDave Watson container_of(crypto_info, 425fb99bce7SDave Watson struct tls12_crypto_info_aes_gcm_256, 426fb99bce7SDave Watson info); 427fb99bce7SDave Watson 428fb99bce7SDave Watson if (len != sizeof(*crypto_info_aes_gcm_256)) { 429fb99bce7SDave Watson rc = -EINVAL; 430fb99bce7SDave Watson goto out; 431fb99bce7SDave Watson } 432fb99bce7SDave Watson lock_sock(sk); 433fb99bce7SDave Watson memcpy(crypto_info_aes_gcm_256->iv, 434ffa81fa4SYutaro Hayakawa cctx->iv + TLS_CIPHER_AES_GCM_256_SALT_SIZE, 435fb99bce7SDave Watson TLS_CIPHER_AES_GCM_256_IV_SIZE); 436ffa81fa4SYutaro Hayakawa memcpy(crypto_info_aes_gcm_256->rec_seq, cctx->rec_seq, 437fb99bce7SDave Watson TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE); 438fb99bce7SDave Watson release_sock(sk); 439fb99bce7SDave Watson if (copy_to_user(optval, 440fb99bce7SDave Watson crypto_info_aes_gcm_256, 441fb99bce7SDave Watson sizeof(*crypto_info_aes_gcm_256))) 442fb99bce7SDave Watson rc = -EFAULT; 443fb99bce7SDave Watson break; 444fb99bce7SDave Watson } 4453fb59a5dSTianjia Zhang case TLS_CIPHER_AES_CCM_128: { 4463fb59a5dSTianjia Zhang struct tls12_crypto_info_aes_ccm_128 *aes_ccm_128 = 4473fb59a5dSTianjia Zhang container_of(crypto_info, 4483fb59a5dSTianjia Zhang struct tls12_crypto_info_aes_ccm_128, info); 4493fb59a5dSTianjia Zhang 4503fb59a5dSTianjia Zhang if (len != sizeof(*aes_ccm_128)) { 4513fb59a5dSTianjia Zhang rc = -EINVAL; 4523fb59a5dSTianjia Zhang goto out; 4533fb59a5dSTianjia Zhang } 4543fb59a5dSTianjia Zhang lock_sock(sk); 4553fb59a5dSTianjia Zhang memcpy(aes_ccm_128->iv, 4563fb59a5dSTianjia Zhang cctx->iv + TLS_CIPHER_AES_CCM_128_SALT_SIZE, 4573fb59a5dSTianjia Zhang TLS_CIPHER_AES_CCM_128_IV_SIZE); 4583fb59a5dSTianjia Zhang memcpy(aes_ccm_128->rec_seq, cctx->rec_seq, 4593fb59a5dSTianjia Zhang TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE); 4603fb59a5dSTianjia Zhang release_sock(sk); 4613fb59a5dSTianjia Zhang if (copy_to_user(optval, aes_ccm_128, sizeof(*aes_ccm_128))) 4623fb59a5dSTianjia Zhang rc = -EFAULT; 4633fb59a5dSTianjia Zhang break; 4643fb59a5dSTianjia Zhang } 4653fb59a5dSTianjia Zhang case TLS_CIPHER_CHACHA20_POLY1305: { 4663fb59a5dSTianjia Zhang struct tls12_crypto_info_chacha20_poly1305 *chacha20_poly1305 = 4673fb59a5dSTianjia Zhang container_of(crypto_info, 4683fb59a5dSTianjia Zhang struct tls12_crypto_info_chacha20_poly1305, 4693fb59a5dSTianjia Zhang info); 4703fb59a5dSTianjia Zhang 4713fb59a5dSTianjia Zhang if (len != sizeof(*chacha20_poly1305)) { 4723fb59a5dSTianjia Zhang rc = -EINVAL; 4733fb59a5dSTianjia Zhang goto out; 4743fb59a5dSTianjia Zhang } 4753fb59a5dSTianjia Zhang lock_sock(sk); 4763fb59a5dSTianjia Zhang memcpy(chacha20_poly1305->iv, 4773fb59a5dSTianjia Zhang cctx->iv + TLS_CIPHER_CHACHA20_POLY1305_SALT_SIZE, 4783fb59a5dSTianjia Zhang TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE); 4793fb59a5dSTianjia Zhang memcpy(chacha20_poly1305->rec_seq, cctx->rec_seq, 4803fb59a5dSTianjia Zhang TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE); 4813fb59a5dSTianjia Zhang release_sock(sk); 4823fb59a5dSTianjia Zhang if (copy_to_user(optval, chacha20_poly1305, 4833fb59a5dSTianjia Zhang sizeof(*chacha20_poly1305))) 4843fb59a5dSTianjia Zhang rc = -EFAULT; 4853fb59a5dSTianjia Zhang break; 4863fb59a5dSTianjia Zhang } 487227b9644STianjia Zhang case TLS_CIPHER_SM4_GCM: { 488227b9644STianjia Zhang struct tls12_crypto_info_sm4_gcm *sm4_gcm_info = 489227b9644STianjia Zhang container_of(crypto_info, 490227b9644STianjia Zhang struct tls12_crypto_info_sm4_gcm, info); 491227b9644STianjia Zhang 492227b9644STianjia Zhang if (len != sizeof(*sm4_gcm_info)) { 493227b9644STianjia Zhang rc = -EINVAL; 494227b9644STianjia Zhang goto out; 495227b9644STianjia Zhang } 496227b9644STianjia Zhang lock_sock(sk); 497227b9644STianjia Zhang memcpy(sm4_gcm_info->iv, 498227b9644STianjia Zhang cctx->iv + TLS_CIPHER_SM4_GCM_SALT_SIZE, 499227b9644STianjia Zhang TLS_CIPHER_SM4_GCM_IV_SIZE); 500227b9644STianjia Zhang memcpy(sm4_gcm_info->rec_seq, cctx->rec_seq, 501227b9644STianjia Zhang TLS_CIPHER_SM4_GCM_REC_SEQ_SIZE); 502227b9644STianjia Zhang release_sock(sk); 503227b9644STianjia Zhang if (copy_to_user(optval, sm4_gcm_info, sizeof(*sm4_gcm_info))) 504227b9644STianjia Zhang rc = -EFAULT; 505227b9644STianjia Zhang break; 506227b9644STianjia Zhang } 507227b9644STianjia Zhang case TLS_CIPHER_SM4_CCM: { 508227b9644STianjia Zhang struct tls12_crypto_info_sm4_ccm *sm4_ccm_info = 509227b9644STianjia Zhang container_of(crypto_info, 510227b9644STianjia Zhang struct tls12_crypto_info_sm4_ccm, info); 511227b9644STianjia Zhang 512227b9644STianjia Zhang if (len != sizeof(*sm4_ccm_info)) { 513227b9644STianjia Zhang rc = -EINVAL; 514227b9644STianjia Zhang goto out; 515227b9644STianjia Zhang } 516227b9644STianjia Zhang lock_sock(sk); 517227b9644STianjia Zhang memcpy(sm4_ccm_info->iv, 518227b9644STianjia Zhang cctx->iv + TLS_CIPHER_SM4_CCM_SALT_SIZE, 519227b9644STianjia Zhang TLS_CIPHER_SM4_CCM_IV_SIZE); 520227b9644STianjia Zhang memcpy(sm4_ccm_info->rec_seq, cctx->rec_seq, 521227b9644STianjia Zhang TLS_CIPHER_SM4_CCM_REC_SEQ_SIZE); 522227b9644STianjia Zhang release_sock(sk); 523227b9644STianjia Zhang if (copy_to_user(optval, sm4_ccm_info, sizeof(*sm4_ccm_info))) 524227b9644STianjia Zhang rc = -EFAULT; 525227b9644STianjia Zhang break; 526227b9644STianjia Zhang } 527*62e56ef5STaehee Yoo case TLS_CIPHER_ARIA_GCM_128: { 528*62e56ef5STaehee Yoo struct tls12_crypto_info_aria_gcm_128 * 529*62e56ef5STaehee Yoo crypto_info_aria_gcm_128 = 530*62e56ef5STaehee Yoo container_of(crypto_info, 531*62e56ef5STaehee Yoo struct tls12_crypto_info_aria_gcm_128, 532*62e56ef5STaehee Yoo info); 533*62e56ef5STaehee Yoo 534*62e56ef5STaehee Yoo if (len != sizeof(*crypto_info_aria_gcm_128)) { 535*62e56ef5STaehee Yoo rc = -EINVAL; 536*62e56ef5STaehee Yoo goto out; 537*62e56ef5STaehee Yoo } 538*62e56ef5STaehee Yoo lock_sock(sk); 539*62e56ef5STaehee Yoo memcpy(crypto_info_aria_gcm_128->iv, 540*62e56ef5STaehee Yoo cctx->iv + TLS_CIPHER_ARIA_GCM_128_SALT_SIZE, 541*62e56ef5STaehee Yoo TLS_CIPHER_ARIA_GCM_128_IV_SIZE); 542*62e56ef5STaehee Yoo memcpy(crypto_info_aria_gcm_128->rec_seq, cctx->rec_seq, 543*62e56ef5STaehee Yoo TLS_CIPHER_ARIA_GCM_128_REC_SEQ_SIZE); 544*62e56ef5STaehee Yoo release_sock(sk); 545*62e56ef5STaehee Yoo if (copy_to_user(optval, 546*62e56ef5STaehee Yoo crypto_info_aria_gcm_128, 547*62e56ef5STaehee Yoo sizeof(*crypto_info_aria_gcm_128))) 548*62e56ef5STaehee Yoo rc = -EFAULT; 549*62e56ef5STaehee Yoo break; 550*62e56ef5STaehee Yoo } 551*62e56ef5STaehee Yoo case TLS_CIPHER_ARIA_GCM_256: { 552*62e56ef5STaehee Yoo struct tls12_crypto_info_aria_gcm_256 * 553*62e56ef5STaehee Yoo crypto_info_aria_gcm_256 = 554*62e56ef5STaehee Yoo container_of(crypto_info, 555*62e56ef5STaehee Yoo struct tls12_crypto_info_aria_gcm_256, 556*62e56ef5STaehee Yoo info); 557*62e56ef5STaehee Yoo 558*62e56ef5STaehee Yoo if (len != sizeof(*crypto_info_aria_gcm_256)) { 559*62e56ef5STaehee Yoo rc = -EINVAL; 560*62e56ef5STaehee Yoo goto out; 561*62e56ef5STaehee Yoo } 562*62e56ef5STaehee Yoo lock_sock(sk); 563*62e56ef5STaehee Yoo memcpy(crypto_info_aria_gcm_256->iv, 564*62e56ef5STaehee Yoo cctx->iv + TLS_CIPHER_ARIA_GCM_256_SALT_SIZE, 565*62e56ef5STaehee Yoo TLS_CIPHER_ARIA_GCM_256_IV_SIZE); 566*62e56ef5STaehee Yoo memcpy(crypto_info_aria_gcm_256->rec_seq, cctx->rec_seq, 567*62e56ef5STaehee Yoo TLS_CIPHER_ARIA_GCM_256_REC_SEQ_SIZE); 568*62e56ef5STaehee Yoo release_sock(sk); 569*62e56ef5STaehee Yoo if (copy_to_user(optval, 570*62e56ef5STaehee Yoo crypto_info_aria_gcm_256, 571*62e56ef5STaehee Yoo sizeof(*crypto_info_aria_gcm_256))) 572*62e56ef5STaehee Yoo rc = -EFAULT; 573*62e56ef5STaehee Yoo break; 574*62e56ef5STaehee Yoo } 5753c4d7559SDave Watson default: 5763c4d7559SDave Watson rc = -EINVAL; 5773c4d7559SDave Watson } 5783c4d7559SDave Watson 5793c4d7559SDave Watson out: 5803c4d7559SDave Watson return rc; 5813c4d7559SDave Watson } 5823c4d7559SDave Watson 583c1318b39SBoris Pismenny static int do_tls_getsockopt_tx_zc(struct sock *sk, char __user *optval, 584c1318b39SBoris Pismenny int __user *optlen) 585c1318b39SBoris Pismenny { 586c1318b39SBoris Pismenny struct tls_context *ctx = tls_get_ctx(sk); 587c1318b39SBoris Pismenny unsigned int value; 588c1318b39SBoris Pismenny int len; 589c1318b39SBoris Pismenny 590c1318b39SBoris Pismenny if (get_user(len, optlen)) 591c1318b39SBoris Pismenny return -EFAULT; 592c1318b39SBoris Pismenny 593c1318b39SBoris Pismenny if (len != sizeof(value)) 594c1318b39SBoris Pismenny return -EINVAL; 595c1318b39SBoris Pismenny 596c1318b39SBoris Pismenny value = ctx->zerocopy_sendfile; 597c1318b39SBoris Pismenny if (copy_to_user(optval, &value, sizeof(value))) 598c1318b39SBoris Pismenny return -EFAULT; 599c1318b39SBoris Pismenny 600c1318b39SBoris Pismenny return 0; 601c1318b39SBoris Pismenny } 602c1318b39SBoris Pismenny 60388527790SJakub Kicinski static int do_tls_getsockopt_no_pad(struct sock *sk, char __user *optval, 60488527790SJakub Kicinski int __user *optlen) 60588527790SJakub Kicinski { 60688527790SJakub Kicinski struct tls_context *ctx = tls_get_ctx(sk); 60757128e98SJakub Kicinski int value, len; 60888527790SJakub Kicinski 60988527790SJakub Kicinski if (ctx->prot_info.version != TLS_1_3_VERSION) 61088527790SJakub Kicinski return -EINVAL; 61188527790SJakub Kicinski 61288527790SJakub Kicinski if (get_user(len, optlen)) 61388527790SJakub Kicinski return -EFAULT; 61488527790SJakub Kicinski if (len < sizeof(value)) 61588527790SJakub Kicinski return -EINVAL; 61688527790SJakub Kicinski 61788527790SJakub Kicinski lock_sock(sk); 61857128e98SJakub Kicinski value = -EINVAL; 61988527790SJakub Kicinski if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) 62088527790SJakub Kicinski value = ctx->rx_no_pad; 62188527790SJakub Kicinski release_sock(sk); 62257128e98SJakub Kicinski if (value < 0) 62357128e98SJakub Kicinski return value; 62488527790SJakub Kicinski 62588527790SJakub Kicinski if (put_user(sizeof(value), optlen)) 62688527790SJakub Kicinski return -EFAULT; 62788527790SJakub Kicinski if (copy_to_user(optval, &value, sizeof(value))) 62888527790SJakub Kicinski return -EFAULT; 62988527790SJakub Kicinski 63088527790SJakub Kicinski return 0; 63188527790SJakub Kicinski } 63288527790SJakub Kicinski 6333c4d7559SDave Watson static int do_tls_getsockopt(struct sock *sk, int optname, 6343c4d7559SDave Watson char __user *optval, int __user *optlen) 6353c4d7559SDave Watson { 6363c4d7559SDave Watson int rc = 0; 6373c4d7559SDave Watson 6383c4d7559SDave Watson switch (optname) { 6393c4d7559SDave Watson case TLS_TX: 640ffa81fa4SYutaro Hayakawa case TLS_RX: 641ffa81fa4SYutaro Hayakawa rc = do_tls_getsockopt_conf(sk, optval, optlen, 642ffa81fa4SYutaro Hayakawa optname == TLS_TX); 6433c4d7559SDave Watson break; 644b489a6e5SMaxim Mikityanskiy case TLS_TX_ZEROCOPY_RO: 645c1318b39SBoris Pismenny rc = do_tls_getsockopt_tx_zc(sk, optval, optlen); 646c1318b39SBoris Pismenny break; 64788527790SJakub Kicinski case TLS_RX_EXPECT_NO_PAD: 64888527790SJakub Kicinski rc = do_tls_getsockopt_no_pad(sk, optval, optlen); 64988527790SJakub Kicinski break; 6503c4d7559SDave Watson default: 6513c4d7559SDave Watson rc = -ENOPROTOOPT; 6523c4d7559SDave Watson break; 6533c4d7559SDave Watson } 6543c4d7559SDave Watson return rc; 6553c4d7559SDave Watson } 6563c4d7559SDave Watson 6573c4d7559SDave Watson static int tls_getsockopt(struct sock *sk, int level, int optname, 6583c4d7559SDave Watson char __user *optval, int __user *optlen) 6593c4d7559SDave Watson { 6603c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 6613c4d7559SDave Watson 6623c4d7559SDave Watson if (level != SOL_TLS) 663be7bbea1SJakub Kicinski return ctx->sk_proto->getsockopt(sk, level, 664be7bbea1SJakub Kicinski optname, optval, optlen); 6653c4d7559SDave Watson 6663c4d7559SDave Watson return do_tls_getsockopt(sk, optname, optval, optlen); 6673c4d7559SDave Watson } 6683c4d7559SDave Watson 669a7b75c5aSChristoph Hellwig static int do_tls_setsockopt_conf(struct sock *sk, sockptr_t optval, 670c46234ebSDave Watson unsigned int optlen, int tx) 6713c4d7559SDave Watson { 672196c31b4SIlya Lesokhin struct tls_crypto_info *crypto_info; 6734509de14SVakul Garg struct tls_crypto_info *alt_crypto_info; 6743c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 675fb99bce7SDave Watson size_t optsize; 6763c4d7559SDave Watson int rc = 0; 67758371585SDave Watson int conf; 6783c4d7559SDave Watson 6791ddcbfbfSZiyang Xuan if (sockptr_is_null(optval) || (optlen < sizeof(*crypto_info))) 6801ddcbfbfSZiyang Xuan return -EINVAL; 6813c4d7559SDave Watson 6824509de14SVakul Garg if (tx) { 68386029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 6844509de14SVakul Garg alt_crypto_info = &ctx->crypto_recv.info; 6854509de14SVakul Garg } else { 68686029d10SSabrina Dubroca crypto_info = &ctx->crypto_recv.info; 6874509de14SVakul Garg alt_crypto_info = &ctx->crypto_send.info; 6884509de14SVakul Garg } 689c46234ebSDave Watson 690196c31b4SIlya Lesokhin /* Currently we don't support set crypto info more than one time */ 6911ddcbfbfSZiyang Xuan if (TLS_CRYPTO_INFO_READY(crypto_info)) 6921ddcbfbfSZiyang Xuan return -EBUSY; 693196c31b4SIlya Lesokhin 694a7b75c5aSChristoph Hellwig rc = copy_from_sockptr(crypto_info, optval, sizeof(*crypto_info)); 6953c4d7559SDave Watson if (rc) { 6963c4d7559SDave Watson rc = -EFAULT; 697257082e6SBoris Pismenny goto err_crypto_info; 6983c4d7559SDave Watson } 6993c4d7559SDave Watson 7003c4d7559SDave Watson /* check version */ 701130b392cSDave Watson if (crypto_info->version != TLS_1_2_VERSION && 702130b392cSDave Watson crypto_info->version != TLS_1_3_VERSION) { 7034a5cdc60SValentin Vidic rc = -EINVAL; 704196c31b4SIlya Lesokhin goto err_crypto_info; 7053c4d7559SDave Watson } 7063c4d7559SDave Watson 7074509de14SVakul Garg /* Ensure that TLS version and ciphers are same in both directions */ 7084509de14SVakul Garg if (TLS_CRYPTO_INFO_READY(alt_crypto_info)) { 7094509de14SVakul Garg if (alt_crypto_info->version != crypto_info->version || 7104509de14SVakul Garg alt_crypto_info->cipher_type != crypto_info->cipher_type) { 7114509de14SVakul Garg rc = -EINVAL; 7124509de14SVakul Garg goto err_crypto_info; 7134509de14SVakul Garg } 7144509de14SVakul Garg } 7154509de14SVakul Garg 716196c31b4SIlya Lesokhin switch (crypto_info->cipher_type) { 717fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_128: 718f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_gcm_128); 719f295b3aeSVakul Garg break; 720fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_256: { 721f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_gcm_256); 722f295b3aeSVakul Garg break; 723f295b3aeSVakul Garg } 724f295b3aeSVakul Garg case TLS_CIPHER_AES_CCM_128: 725f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_ccm_128); 726f295b3aeSVakul Garg break; 72774ea6106SVadim Fedorenko case TLS_CIPHER_CHACHA20_POLY1305: 72874ea6106SVadim Fedorenko optsize = sizeof(struct tls12_crypto_info_chacha20_poly1305); 72974ea6106SVadim Fedorenko break; 730227b9644STianjia Zhang case TLS_CIPHER_SM4_GCM: 731227b9644STianjia Zhang optsize = sizeof(struct tls12_crypto_info_sm4_gcm); 732227b9644STianjia Zhang break; 733227b9644STianjia Zhang case TLS_CIPHER_SM4_CCM: 734227b9644STianjia Zhang optsize = sizeof(struct tls12_crypto_info_sm4_ccm); 735227b9644STianjia Zhang break; 736*62e56ef5STaehee Yoo case TLS_CIPHER_ARIA_GCM_128: 737*62e56ef5STaehee Yoo if (crypto_info->version != TLS_1_2_VERSION) { 738*62e56ef5STaehee Yoo rc = -EINVAL; 739*62e56ef5STaehee Yoo goto err_crypto_info; 740*62e56ef5STaehee Yoo } 741*62e56ef5STaehee Yoo optsize = sizeof(struct tls12_crypto_info_aria_gcm_128); 742*62e56ef5STaehee Yoo break; 743*62e56ef5STaehee Yoo case TLS_CIPHER_ARIA_GCM_256: 744*62e56ef5STaehee Yoo if (crypto_info->version != TLS_1_2_VERSION) { 745*62e56ef5STaehee Yoo rc = -EINVAL; 746*62e56ef5STaehee Yoo goto err_crypto_info; 747*62e56ef5STaehee Yoo } 748*62e56ef5STaehee Yoo optsize = sizeof(struct tls12_crypto_info_aria_gcm_256); 749*62e56ef5STaehee Yoo break; 750f295b3aeSVakul Garg default: 751f295b3aeSVakul Garg rc = -EINVAL; 752f295b3aeSVakul Garg goto err_crypto_info; 753f295b3aeSVakul Garg } 754f295b3aeSVakul Garg 755fb99bce7SDave Watson if (optlen != optsize) { 7563c4d7559SDave Watson rc = -EINVAL; 7576db959c8SSabrina Dubroca goto err_crypto_info; 7583c4d7559SDave Watson } 759f295b3aeSVakul Garg 760d3c48151SChristoph Hellwig rc = copy_from_sockptr_offset(crypto_info + 1, optval, 761d3c48151SChristoph Hellwig sizeof(*crypto_info), 762196c31b4SIlya Lesokhin optlen - sizeof(*crypto_info)); 7633c4d7559SDave Watson if (rc) { 7643c4d7559SDave Watson rc = -EFAULT; 7653c4d7559SDave Watson goto err_crypto_info; 7663c4d7559SDave Watson } 7673c4d7559SDave Watson 768c46234ebSDave Watson if (tx) { 769e8f69799SIlya Lesokhin rc = tls_set_device_offload(sk, ctx); 770e8f69799SIlya Lesokhin conf = TLS_HW; 771b32fd3ccSJakub Kicinski if (!rc) { 772b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSTXDEVICE); 773b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXDEVICE); 774b32fd3ccSJakub Kicinski } else { 775c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 1); 776318892acSJakub Kicinski if (rc) 777318892acSJakub Kicinski goto err_crypto_info; 778b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSTXSW); 779b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXSW); 780f66de3eeSBoris Pismenny conf = TLS_SW; 781e8f69799SIlya Lesokhin } 782c46234ebSDave Watson } else { 7834799ac81SBoris Pismenny rc = tls_set_device_offload_rx(sk, ctx); 7844799ac81SBoris Pismenny conf = TLS_HW; 785b32fd3ccSJakub Kicinski if (!rc) { 786b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXDEVICE); 787b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXDEVICE); 788b32fd3ccSJakub Kicinski } else { 789c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 0); 790318892acSJakub Kicinski if (rc) 791318892acSJakub Kicinski goto err_crypto_info; 792b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXSW); 793b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXSW); 794f66de3eeSBoris Pismenny conf = TLS_SW; 795c46234ebSDave Watson } 796313ab004SJohn Fastabend tls_sw_strparser_arm(sk, ctx); 7974799ac81SBoris Pismenny } 798c46234ebSDave Watson 799f66de3eeSBoris Pismenny if (tx) 800f66de3eeSBoris Pismenny ctx->tx_conf = conf; 801f66de3eeSBoris Pismenny else 802f66de3eeSBoris Pismenny ctx->rx_conf = conf; 8036d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 804c46234ebSDave Watson if (tx) { 805ee181e52SIlya Lesokhin ctx->sk_write_space = sk->sk_write_space; 806ee181e52SIlya Lesokhin sk->sk_write_space = tls_write_space; 80784c61fe1SJakub Kicinski } else { 80884c61fe1SJakub Kicinski struct tls_sw_context_rx *rx_ctx = tls_sw_ctx_rx(ctx); 80984c61fe1SJakub Kicinski 81084c61fe1SJakub Kicinski tls_strp_check_rcv(&rx_ctx->strp); 811c46234ebSDave Watson } 8121ddcbfbfSZiyang Xuan return 0; 8133c4d7559SDave Watson 8143c4d7559SDave Watson err_crypto_info: 815c844eb46SSabrina Dubroca memzero_explicit(crypto_info, sizeof(union tls_crypto_context)); 8163c4d7559SDave Watson return rc; 8173c4d7559SDave Watson } 8183c4d7559SDave Watson 819c1318b39SBoris Pismenny static int do_tls_setsockopt_tx_zc(struct sock *sk, sockptr_t optval, 820c1318b39SBoris Pismenny unsigned int optlen) 821c1318b39SBoris Pismenny { 822c1318b39SBoris Pismenny struct tls_context *ctx = tls_get_ctx(sk); 823c1318b39SBoris Pismenny unsigned int value; 824c1318b39SBoris Pismenny 825c1318b39SBoris Pismenny if (sockptr_is_null(optval) || optlen != sizeof(value)) 826c1318b39SBoris Pismenny return -EINVAL; 827c1318b39SBoris Pismenny 828c1318b39SBoris Pismenny if (copy_from_sockptr(&value, optval, sizeof(value))) 829c1318b39SBoris Pismenny return -EFAULT; 830c1318b39SBoris Pismenny 831c1318b39SBoris Pismenny if (value > 1) 832c1318b39SBoris Pismenny return -EINVAL; 833c1318b39SBoris Pismenny 834c1318b39SBoris Pismenny ctx->zerocopy_sendfile = value; 835c1318b39SBoris Pismenny 836c1318b39SBoris Pismenny return 0; 837c1318b39SBoris Pismenny } 838c1318b39SBoris Pismenny 83988527790SJakub Kicinski static int do_tls_setsockopt_no_pad(struct sock *sk, sockptr_t optval, 84088527790SJakub Kicinski unsigned int optlen) 84188527790SJakub Kicinski { 84288527790SJakub Kicinski struct tls_context *ctx = tls_get_ctx(sk); 84388527790SJakub Kicinski u32 val; 84488527790SJakub Kicinski int rc; 84588527790SJakub Kicinski 84688527790SJakub Kicinski if (ctx->prot_info.version != TLS_1_3_VERSION || 84788527790SJakub Kicinski sockptr_is_null(optval) || optlen < sizeof(val)) 84888527790SJakub Kicinski return -EINVAL; 84988527790SJakub Kicinski 85088527790SJakub Kicinski rc = copy_from_sockptr(&val, optval, sizeof(val)); 85188527790SJakub Kicinski if (rc) 85288527790SJakub Kicinski return -EFAULT; 85388527790SJakub Kicinski if (val > 1) 85488527790SJakub Kicinski return -EINVAL; 85588527790SJakub Kicinski rc = check_zeroed_sockptr(optval, sizeof(val), optlen - sizeof(val)); 85688527790SJakub Kicinski if (rc < 1) 85788527790SJakub Kicinski return rc == 0 ? -EINVAL : rc; 85888527790SJakub Kicinski 85988527790SJakub Kicinski lock_sock(sk); 86088527790SJakub Kicinski rc = -EINVAL; 86188527790SJakub Kicinski if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) { 86288527790SJakub Kicinski ctx->rx_no_pad = val; 86388527790SJakub Kicinski tls_update_rx_zc_capable(ctx); 86488527790SJakub Kicinski rc = 0; 86588527790SJakub Kicinski } 86688527790SJakub Kicinski release_sock(sk); 86788527790SJakub Kicinski 86888527790SJakub Kicinski return rc; 86988527790SJakub Kicinski } 87088527790SJakub Kicinski 871a7b75c5aSChristoph Hellwig static int do_tls_setsockopt(struct sock *sk, int optname, sockptr_t optval, 872a7b75c5aSChristoph Hellwig unsigned int optlen) 8733c4d7559SDave Watson { 8743c4d7559SDave Watson int rc = 0; 8753c4d7559SDave Watson 8763c4d7559SDave Watson switch (optname) { 8773c4d7559SDave Watson case TLS_TX: 878c46234ebSDave Watson case TLS_RX: 8793c4d7559SDave Watson lock_sock(sk); 880c46234ebSDave Watson rc = do_tls_setsockopt_conf(sk, optval, optlen, 881c46234ebSDave Watson optname == TLS_TX); 8823c4d7559SDave Watson release_sock(sk); 8833c4d7559SDave Watson break; 884b489a6e5SMaxim Mikityanskiy case TLS_TX_ZEROCOPY_RO: 885c1318b39SBoris Pismenny lock_sock(sk); 886c1318b39SBoris Pismenny rc = do_tls_setsockopt_tx_zc(sk, optval, optlen); 887c1318b39SBoris Pismenny release_sock(sk); 888c1318b39SBoris Pismenny break; 88988527790SJakub Kicinski case TLS_RX_EXPECT_NO_PAD: 89088527790SJakub Kicinski rc = do_tls_setsockopt_no_pad(sk, optval, optlen); 89188527790SJakub Kicinski break; 8923c4d7559SDave Watson default: 8933c4d7559SDave Watson rc = -ENOPROTOOPT; 8943c4d7559SDave Watson break; 8953c4d7559SDave Watson } 8963c4d7559SDave Watson return rc; 8973c4d7559SDave Watson } 8983c4d7559SDave Watson 8993c4d7559SDave Watson static int tls_setsockopt(struct sock *sk, int level, int optname, 900a7b75c5aSChristoph Hellwig sockptr_t optval, unsigned int optlen) 9013c4d7559SDave Watson { 9023c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 9033c4d7559SDave Watson 9043c4d7559SDave Watson if (level != SOL_TLS) 905be7bbea1SJakub Kicinski return ctx->sk_proto->setsockopt(sk, level, optname, optval, 906be7bbea1SJakub Kicinski optlen); 9073c4d7559SDave Watson 9083c4d7559SDave Watson return do_tls_setsockopt(sk, optname, optval, optlen); 9093c4d7559SDave Watson } 9103c4d7559SDave Watson 91108700dabSJakub Kicinski struct tls_context *tls_ctx_create(struct sock *sk) 912dd0bed16SAtul Gupta { 913dd0bed16SAtul Gupta struct inet_connection_sock *icsk = inet_csk(sk); 914dd0bed16SAtul Gupta struct tls_context *ctx; 915dd0bed16SAtul Gupta 916c6ec179aSGanesh Goudar ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC); 917dd0bed16SAtul Gupta if (!ctx) 918dd0bed16SAtul Gupta return NULL; 919dd0bed16SAtul Gupta 92079ffe608SJakub Kicinski mutex_init(&ctx->tx_lock); 92115a7dea7SJakub Kicinski rcu_assign_pointer(icsk->icsk_ulp_data, ctx); 922d5bee737SJakub Sitnicki ctx->sk_proto = READ_ONCE(sk->sk_prot); 923c55dcdd4SMaxim Mikityanskiy ctx->sk = sk; 924dd0bed16SAtul Gupta return ctx; 925dd0bed16SAtul Gupta } 926dd0bed16SAtul Gupta 927f3911f73SJakub Kicinski static void build_proto_ops(struct proto_ops ops[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 928f3911f73SJakub Kicinski const struct proto_ops *base) 929f3911f73SJakub Kicinski { 930f3911f73SJakub Kicinski ops[TLS_BASE][TLS_BASE] = *base; 931f3911f73SJakub Kicinski 932f3911f73SJakub Kicinski ops[TLS_SW ][TLS_BASE] = ops[TLS_BASE][TLS_BASE]; 933f3911f73SJakub Kicinski ops[TLS_SW ][TLS_BASE].sendpage_locked = tls_sw_sendpage_locked; 934f3911f73SJakub Kicinski 935f3911f73SJakub Kicinski ops[TLS_BASE][TLS_SW ] = ops[TLS_BASE][TLS_BASE]; 936f3911f73SJakub Kicinski ops[TLS_BASE][TLS_SW ].splice_read = tls_sw_splice_read; 937f3911f73SJakub Kicinski 938f3911f73SJakub Kicinski ops[TLS_SW ][TLS_SW ] = ops[TLS_SW ][TLS_BASE]; 939f3911f73SJakub Kicinski ops[TLS_SW ][TLS_SW ].splice_read = tls_sw_splice_read; 940f3911f73SJakub Kicinski 941f3911f73SJakub Kicinski #ifdef CONFIG_TLS_DEVICE 942f3911f73SJakub Kicinski ops[TLS_HW ][TLS_BASE] = ops[TLS_BASE][TLS_BASE]; 943f3911f73SJakub Kicinski ops[TLS_HW ][TLS_BASE].sendpage_locked = NULL; 944f3911f73SJakub Kicinski 945f3911f73SJakub Kicinski ops[TLS_HW ][TLS_SW ] = ops[TLS_BASE][TLS_SW ]; 946f3911f73SJakub Kicinski ops[TLS_HW ][TLS_SW ].sendpage_locked = NULL; 947f3911f73SJakub Kicinski 948f3911f73SJakub Kicinski ops[TLS_BASE][TLS_HW ] = ops[TLS_BASE][TLS_SW ]; 949f3911f73SJakub Kicinski 950f3911f73SJakub Kicinski ops[TLS_SW ][TLS_HW ] = ops[TLS_SW ][TLS_SW ]; 951f3911f73SJakub Kicinski 952f3911f73SJakub Kicinski ops[TLS_HW ][TLS_HW ] = ops[TLS_HW ][TLS_SW ]; 953f3911f73SJakub Kicinski ops[TLS_HW ][TLS_HW ].sendpage_locked = NULL; 954f3911f73SJakub Kicinski #endif 955f3911f73SJakub Kicinski #ifdef CONFIG_TLS_TOE 956f3911f73SJakub Kicinski ops[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 957f3911f73SJakub Kicinski #endif 958f3911f73SJakub Kicinski } 959f3911f73SJakub Kicinski 96063a6b3feSAtul Gupta static void tls_build_proto(struct sock *sk) 96163a6b3feSAtul Gupta { 96263a6b3feSAtul Gupta int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 9639a893949SWill Deacon struct proto *prot = READ_ONCE(sk->sk_prot); 96463a6b3feSAtul Gupta 96563a6b3feSAtul Gupta /* Build IPv6 TLS whenever the address of tcpv6 _prot changes */ 96663a6b3feSAtul Gupta if (ip_ver == TLSV6 && 9675bb4c45dSJakub Sitnicki unlikely(prot != smp_load_acquire(&saved_tcpv6_prot))) { 96863a6b3feSAtul Gupta mutex_lock(&tcpv6_prot_mutex); 9695bb4c45dSJakub Sitnicki if (likely(prot != saved_tcpv6_prot)) { 9705bb4c45dSJakub Sitnicki build_protos(tls_prots[TLSV6], prot); 971f3911f73SJakub Kicinski build_proto_ops(tls_proto_ops[TLSV6], 972f3911f73SJakub Kicinski sk->sk_socket->ops); 9735bb4c45dSJakub Sitnicki smp_store_release(&saved_tcpv6_prot, prot); 97463a6b3feSAtul Gupta } 97563a6b3feSAtul Gupta mutex_unlock(&tcpv6_prot_mutex); 97663a6b3feSAtul Gupta } 97763a6b3feSAtul Gupta 97863a6b3feSAtul Gupta if (ip_ver == TLSV4 && 9795bb4c45dSJakub Sitnicki unlikely(prot != smp_load_acquire(&saved_tcpv4_prot))) { 98063a6b3feSAtul Gupta mutex_lock(&tcpv4_prot_mutex); 9815bb4c45dSJakub Sitnicki if (likely(prot != saved_tcpv4_prot)) { 9825bb4c45dSJakub Sitnicki build_protos(tls_prots[TLSV4], prot); 983f3911f73SJakub Kicinski build_proto_ops(tls_proto_ops[TLSV4], 984f3911f73SJakub Kicinski sk->sk_socket->ops); 9855bb4c45dSJakub Sitnicki smp_store_release(&saved_tcpv4_prot, prot); 98663a6b3feSAtul Gupta } 98763a6b3feSAtul Gupta mutex_unlock(&tcpv4_prot_mutex); 98863a6b3feSAtul Gupta } 98963a6b3feSAtul Gupta } 99063a6b3feSAtul Gupta 991f66de3eeSBoris Pismenny static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 992f13fe3e6SJakub Sitnicki const struct proto *base) 993c113187dSBoris Pismenny { 994f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE] = *base; 995f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].setsockopt = tls_setsockopt; 996f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].getsockopt = tls_getsockopt; 997f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].close = tls_sk_proto_close; 998c113187dSBoris Pismenny 999f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 1000f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendmsg = tls_sw_sendmsg; 1001f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendpage = tls_sw_sendpage; 1002c46234ebSDave Watson 1003f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW] = prot[TLS_BASE][TLS_BASE]; 1004f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].recvmsg = tls_sw_recvmsg; 10057b50ecfcSCong Wang prot[TLS_BASE][TLS_SW].sock_is_readable = tls_sw_sock_is_readable; 1006f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].close = tls_sk_proto_close; 1007c46234ebSDave Watson 1008f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW] = prot[TLS_SW][TLS_BASE]; 1009f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].recvmsg = tls_sw_recvmsg; 10107b50ecfcSCong Wang prot[TLS_SW][TLS_SW].sock_is_readable = tls_sw_sock_is_readable; 1011f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].close = tls_sk_proto_close; 1012dd0bed16SAtul Gupta 1013e8f69799SIlya Lesokhin #ifdef CONFIG_TLS_DEVICE 1014e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 1015e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendmsg = tls_device_sendmsg; 1016e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendpage = tls_device_sendpage; 1017e8f69799SIlya Lesokhin 1018e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW] = prot[TLS_BASE][TLS_SW]; 1019e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendmsg = tls_device_sendmsg; 1020e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendpage = tls_device_sendpage; 10214799ac81SBoris Pismenny 10224799ac81SBoris Pismenny prot[TLS_BASE][TLS_HW] = prot[TLS_BASE][TLS_SW]; 10234799ac81SBoris Pismenny 10244799ac81SBoris Pismenny prot[TLS_SW][TLS_HW] = prot[TLS_SW][TLS_SW]; 10254799ac81SBoris Pismenny 10264799ac81SBoris Pismenny prot[TLS_HW][TLS_HW] = prot[TLS_HW][TLS_SW]; 1027e8f69799SIlya Lesokhin #endif 102853b4414aSJakub Kicinski #ifdef CONFIG_TLS_TOE 1029f66de3eeSBoris Pismenny prot[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 10300eb8745eSJakub Kicinski prot[TLS_HW_RECORD][TLS_HW_RECORD].hash = tls_toe_hash; 10310eb8745eSJakub Kicinski prot[TLS_HW_RECORD][TLS_HW_RECORD].unhash = tls_toe_unhash; 103253b4414aSJakub Kicinski #endif 1033c113187dSBoris Pismenny } 1034c113187dSBoris Pismenny 10353c4d7559SDave Watson static int tls_init(struct sock *sk) 10363c4d7559SDave Watson { 10373c4d7559SDave Watson struct tls_context *ctx; 10383c4d7559SDave Watson int rc = 0; 10393c4d7559SDave Watson 104016bed0e6SJakub Kicinski tls_build_proto(sk); 104116bed0e6SJakub Kicinski 104253b4414aSJakub Kicinski #ifdef CONFIG_TLS_TOE 10430eb8745eSJakub Kicinski if (tls_toe_bypass(sk)) 104495fa1454SJohn Fastabend return 0; 104553b4414aSJakub Kicinski #endif 1046dd0bed16SAtul Gupta 1047d91c3e17SIlya Lesokhin /* The TLS ulp is currently supported only for TCP sockets 1048d91c3e17SIlya Lesokhin * in ESTABLISHED state. 1049d91c3e17SIlya Lesokhin * Supporting sockets in LISTEN state will require us 1050d91c3e17SIlya Lesokhin * to modify the accept implementation to clone rather then 1051d91c3e17SIlya Lesokhin * share the ulp context. 1052d91c3e17SIlya Lesokhin */ 1053d91c3e17SIlya Lesokhin if (sk->sk_state != TCP_ESTABLISHED) 10544a5cdc60SValentin Vidic return -ENOTCONN; 1055d91c3e17SIlya Lesokhin 10563c4d7559SDave Watson /* allocate tls context */ 105795fa1454SJohn Fastabend write_lock_bh(&sk->sk_callback_lock); 105808700dabSJakub Kicinski ctx = tls_ctx_create(sk); 10593c4d7559SDave Watson if (!ctx) { 10603c4d7559SDave Watson rc = -ENOMEM; 10613c4d7559SDave Watson goto out; 10623c4d7559SDave Watson } 10636d88207fSIlya Lesokhin 1064f66de3eeSBoris Pismenny ctx->tx_conf = TLS_BASE; 1065f66de3eeSBoris Pismenny ctx->rx_conf = TLS_BASE; 10666d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 10673c4d7559SDave Watson out: 106895fa1454SJohn Fastabend write_unlock_bh(&sk->sk_callback_lock); 10693c4d7559SDave Watson return rc; 10703c4d7559SDave Watson } 10713c4d7559SDave Watson 107233bfe20dSJohn Fastabend static void tls_update(struct sock *sk, struct proto *p, 107333bfe20dSJohn Fastabend void (*write_space)(struct sock *sk)) 107495fa1454SJohn Fastabend { 107595fa1454SJohn Fastabend struct tls_context *ctx; 107695fa1454SJohn Fastabend 1077e34a07c0SJakub Kicinski WARN_ON_ONCE(sk->sk_prot == p); 1078e34a07c0SJakub Kicinski 107995fa1454SJohn Fastabend ctx = tls_get_ctx(sk); 108033bfe20dSJohn Fastabend if (likely(ctx)) { 108133bfe20dSJohn Fastabend ctx->sk_write_space = write_space; 108295fa1454SJohn Fastabend ctx->sk_proto = p; 108333bfe20dSJohn Fastabend } else { 1084b8e202d1SJakub Sitnicki /* Pairs with lockless read in sk_clone_lock(). */ 1085b8e202d1SJakub Sitnicki WRITE_ONCE(sk->sk_prot, p); 108633bfe20dSJohn Fastabend sk->sk_write_space = write_space; 108733bfe20dSJohn Fastabend } 108895fa1454SJohn Fastabend } 108995fa1454SJohn Fastabend 109058790314SJakub Kicinski static u16 tls_user_config(struct tls_context *ctx, bool tx) 109158790314SJakub Kicinski { 109258790314SJakub Kicinski u16 config = tx ? ctx->tx_conf : ctx->rx_conf; 109358790314SJakub Kicinski 109458790314SJakub Kicinski switch (config) { 109558790314SJakub Kicinski case TLS_BASE: 109658790314SJakub Kicinski return TLS_CONF_BASE; 109758790314SJakub Kicinski case TLS_SW: 109858790314SJakub Kicinski return TLS_CONF_SW; 109958790314SJakub Kicinski case TLS_HW: 110058790314SJakub Kicinski return TLS_CONF_HW; 110158790314SJakub Kicinski case TLS_HW_RECORD: 110258790314SJakub Kicinski return TLS_CONF_HW_RECORD; 110358790314SJakub Kicinski } 110458790314SJakub Kicinski return 0; 110558790314SJakub Kicinski } 110658790314SJakub Kicinski 110726811cc9SDavide Caratti static int tls_get_info(const struct sock *sk, struct sk_buff *skb) 110826811cc9SDavide Caratti { 110926811cc9SDavide Caratti u16 version, cipher_type; 111026811cc9SDavide Caratti struct tls_context *ctx; 111126811cc9SDavide Caratti struct nlattr *start; 111226811cc9SDavide Caratti int err; 111326811cc9SDavide Caratti 111426811cc9SDavide Caratti start = nla_nest_start_noflag(skb, INET_ULP_INFO_TLS); 111526811cc9SDavide Caratti if (!start) 111626811cc9SDavide Caratti return -EMSGSIZE; 111726811cc9SDavide Caratti 111826811cc9SDavide Caratti rcu_read_lock(); 111926811cc9SDavide Caratti ctx = rcu_dereference(inet_csk(sk)->icsk_ulp_data); 112026811cc9SDavide Caratti if (!ctx) { 112126811cc9SDavide Caratti err = 0; 112226811cc9SDavide Caratti goto nla_failure; 112326811cc9SDavide Caratti } 112426811cc9SDavide Caratti version = ctx->prot_info.version; 112526811cc9SDavide Caratti if (version) { 112626811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_VERSION, version); 112726811cc9SDavide Caratti if (err) 112826811cc9SDavide Caratti goto nla_failure; 112926811cc9SDavide Caratti } 113026811cc9SDavide Caratti cipher_type = ctx->prot_info.cipher_type; 113126811cc9SDavide Caratti if (cipher_type) { 113226811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_CIPHER, cipher_type); 113326811cc9SDavide Caratti if (err) 113426811cc9SDavide Caratti goto nla_failure; 113526811cc9SDavide Caratti } 113626811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_TXCONF, tls_user_config(ctx, true)); 113726811cc9SDavide Caratti if (err) 113826811cc9SDavide Caratti goto nla_failure; 113926811cc9SDavide Caratti 114026811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_RXCONF, tls_user_config(ctx, false)); 114126811cc9SDavide Caratti if (err) 114226811cc9SDavide Caratti goto nla_failure; 114326811cc9SDavide Caratti 1144c1318b39SBoris Pismenny if (ctx->tx_conf == TLS_HW && ctx->zerocopy_sendfile) { 1145b489a6e5SMaxim Mikityanskiy err = nla_put_flag(skb, TLS_INFO_ZC_RO_TX); 1146c1318b39SBoris Pismenny if (err) 1147c1318b39SBoris Pismenny goto nla_failure; 1148c1318b39SBoris Pismenny } 114988527790SJakub Kicinski if (ctx->rx_no_pad) { 115088527790SJakub Kicinski err = nla_put_flag(skb, TLS_INFO_RX_NO_PAD); 115188527790SJakub Kicinski if (err) 115288527790SJakub Kicinski goto nla_failure; 115388527790SJakub Kicinski } 1154c1318b39SBoris Pismenny 115526811cc9SDavide Caratti rcu_read_unlock(); 115626811cc9SDavide Caratti nla_nest_end(skb, start); 115726811cc9SDavide Caratti return 0; 115826811cc9SDavide Caratti 115926811cc9SDavide Caratti nla_failure: 116026811cc9SDavide Caratti rcu_read_unlock(); 116126811cc9SDavide Caratti nla_nest_cancel(skb, start); 116226811cc9SDavide Caratti return err; 116326811cc9SDavide Caratti } 116426811cc9SDavide Caratti 116526811cc9SDavide Caratti static size_t tls_get_info_size(const struct sock *sk) 116626811cc9SDavide Caratti { 116726811cc9SDavide Caratti size_t size = 0; 116826811cc9SDavide Caratti 116926811cc9SDavide Caratti size += nla_total_size(0) + /* INET_ULP_INFO_TLS */ 117026811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_VERSION */ 117126811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_CIPHER */ 117226811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_RXCONF */ 117326811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_TXCONF */ 1174b489a6e5SMaxim Mikityanskiy nla_total_size(0) + /* TLS_INFO_ZC_RO_TX */ 117588527790SJakub Kicinski nla_total_size(0) + /* TLS_INFO_RX_NO_PAD */ 117626811cc9SDavide Caratti 0; 117726811cc9SDavide Caratti 117826811cc9SDavide Caratti return size; 117926811cc9SDavide Caratti } 118026811cc9SDavide Caratti 1181d26b698dSJakub Kicinski static int __net_init tls_init_net(struct net *net) 1182d26b698dSJakub Kicinski { 1183d26b698dSJakub Kicinski int err; 1184d26b698dSJakub Kicinski 1185d26b698dSJakub Kicinski net->mib.tls_statistics = alloc_percpu(struct linux_tls_mib); 1186d26b698dSJakub Kicinski if (!net->mib.tls_statistics) 1187d26b698dSJakub Kicinski return -ENOMEM; 1188d26b698dSJakub Kicinski 1189d26b698dSJakub Kicinski err = tls_proc_init(net); 1190d26b698dSJakub Kicinski if (err) 1191d26b698dSJakub Kicinski goto err_free_stats; 1192d26b698dSJakub Kicinski 1193d26b698dSJakub Kicinski return 0; 1194d26b698dSJakub Kicinski err_free_stats: 1195d26b698dSJakub Kicinski free_percpu(net->mib.tls_statistics); 1196d26b698dSJakub Kicinski return err; 1197d26b698dSJakub Kicinski } 1198d26b698dSJakub Kicinski 1199d26b698dSJakub Kicinski static void __net_exit tls_exit_net(struct net *net) 1200d26b698dSJakub Kicinski { 1201d26b698dSJakub Kicinski tls_proc_fini(net); 1202d26b698dSJakub Kicinski free_percpu(net->mib.tls_statistics); 1203d26b698dSJakub Kicinski } 1204d26b698dSJakub Kicinski 1205d26b698dSJakub Kicinski static struct pernet_operations tls_proc_ops = { 1206d26b698dSJakub Kicinski .init = tls_init_net, 1207d26b698dSJakub Kicinski .exit = tls_exit_net, 1208d26b698dSJakub Kicinski }; 1209d26b698dSJakub Kicinski 12103c4d7559SDave Watson static struct tcp_ulp_ops tcp_tls_ulp_ops __read_mostly = { 12113c4d7559SDave Watson .name = "tls", 12123c4d7559SDave Watson .owner = THIS_MODULE, 12133c4d7559SDave Watson .init = tls_init, 121495fa1454SJohn Fastabend .update = tls_update, 121526811cc9SDavide Caratti .get_info = tls_get_info, 121626811cc9SDavide Caratti .get_info_size = tls_get_info_size, 12173c4d7559SDave Watson }; 12183c4d7559SDave Watson 12193c4d7559SDave Watson static int __init tls_register(void) 12203c4d7559SDave Watson { 1221d26b698dSJakub Kicinski int err; 1222d26b698dSJakub Kicinski 1223d26b698dSJakub Kicinski err = register_pernet_subsys(&tls_proc_ops); 1224d26b698dSJakub Kicinski if (err) 1225d26b698dSJakub Kicinski return err; 1226d26b698dSJakub Kicinski 122784c61fe1SJakub Kicinski err = tls_strp_dev_init(); 122884c61fe1SJakub Kicinski if (err) 122984c61fe1SJakub Kicinski goto err_pernet; 123084c61fe1SJakub Kicinski 12313d8c51b2STariq Toukan err = tls_device_init(); 123284c61fe1SJakub Kicinski if (err) 123384c61fe1SJakub Kicinski goto err_strp; 12343d8c51b2STariq Toukan 12353c4d7559SDave Watson tcp_register_ulp(&tcp_tls_ulp_ops); 12363c4d7559SDave Watson 12373c4d7559SDave Watson return 0; 123884c61fe1SJakub Kicinski err_strp: 123984c61fe1SJakub Kicinski tls_strp_dev_exit(); 124084c61fe1SJakub Kicinski err_pernet: 124184c61fe1SJakub Kicinski unregister_pernet_subsys(&tls_proc_ops); 124284c61fe1SJakub Kicinski return err; 12433c4d7559SDave Watson } 12443c4d7559SDave Watson 12453c4d7559SDave Watson static void __exit tls_unregister(void) 12463c4d7559SDave Watson { 12473c4d7559SDave Watson tcp_unregister_ulp(&tcp_tls_ulp_ops); 124884c61fe1SJakub Kicinski tls_strp_dev_exit(); 1249e8f69799SIlya Lesokhin tls_device_cleanup(); 1250d26b698dSJakub Kicinski unregister_pernet_subsys(&tls_proc_ops); 12513c4d7559SDave Watson } 12523c4d7559SDave Watson 12533c4d7559SDave Watson module_init(tls_register); 12543c4d7559SDave Watson module_exit(tls_unregister); 1255