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 114d0ac89f6SEric Dumazet if (sk_wait_event(sk, timeo, 115d0ac89f6SEric Dumazet !READ_ONCE(sk->sk_write_pending), &wait)) 1163c4d7559SDave Watson break; 1173c4d7559SDave Watson } 1183c4d7559SDave Watson remove_wait_queue(sk_sleep(sk), &wait); 1193c4d7559SDave Watson return rc; 1203c4d7559SDave Watson } 1213c4d7559SDave Watson 1223c4d7559SDave Watson int tls_push_sg(struct sock *sk, 1233c4d7559SDave Watson struct tls_context *ctx, 1243c4d7559SDave Watson struct scatterlist *sg, 1253c4d7559SDave Watson u16 first_offset, 1263c4d7559SDave Watson int flags) 1273c4d7559SDave Watson { 128*e117dcfdSDavid Howells struct bio_vec bvec; 129*e117dcfdSDavid Howells struct msghdr msg = { 130*e117dcfdSDavid Howells .msg_flags = MSG_SENDPAGE_NOTLAST | MSG_SPLICE_PAGES | flags, 131*e117dcfdSDavid Howells }; 1323c4d7559SDave Watson int ret = 0; 1333c4d7559SDave Watson struct page *p; 1343c4d7559SDave Watson size_t size; 1353c4d7559SDave Watson int offset = first_offset; 1363c4d7559SDave Watson 1373c4d7559SDave Watson size = sg->length - offset; 1383c4d7559SDave Watson offset += sg->offset; 1393c4d7559SDave Watson 140*e117dcfdSDavid Howells ctx->splicing_pages = true; 1413c4d7559SDave Watson while (1) { 1423c4d7559SDave Watson if (sg_is_last(sg)) 143*e117dcfdSDavid Howells msg.msg_flags = flags; 1443c4d7559SDave Watson 1453c4d7559SDave Watson /* is sending application-limited? */ 1463c4d7559SDave Watson tcp_rate_check_app_limited(sk); 1473c4d7559SDave Watson p = sg_page(sg); 1483c4d7559SDave Watson retry: 149*e117dcfdSDavid Howells bvec_set_page(&bvec, p, size, offset); 150*e117dcfdSDavid Howells iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size); 151*e117dcfdSDavid Howells 152*e117dcfdSDavid Howells ret = tcp_sendmsg_locked(sk, &msg, size); 1533c4d7559SDave Watson 1543c4d7559SDave Watson if (ret != size) { 1553c4d7559SDave Watson if (ret > 0) { 1563c4d7559SDave Watson offset += ret; 1573c4d7559SDave Watson size -= ret; 1583c4d7559SDave Watson goto retry; 1593c4d7559SDave Watson } 1603c4d7559SDave Watson 1613c4d7559SDave Watson offset -= sg->offset; 1623c4d7559SDave Watson ctx->partially_sent_offset = offset; 1633c4d7559SDave Watson ctx->partially_sent_record = (void *)sg; 164*e117dcfdSDavid Howells ctx->splicing_pages = false; 1653c4d7559SDave Watson return ret; 1663c4d7559SDave Watson } 1673c4d7559SDave Watson 1683c4d7559SDave Watson put_page(p); 1693c4d7559SDave Watson sk_mem_uncharge(sk, sg->length); 1703c4d7559SDave Watson sg = sg_next(sg); 1713c4d7559SDave Watson if (!sg) 1723c4d7559SDave Watson break; 1733c4d7559SDave Watson 1743c4d7559SDave Watson offset = sg->offset; 1753c4d7559SDave Watson size = sg->length; 1763c4d7559SDave Watson } 1773c4d7559SDave Watson 178*e117dcfdSDavid Howells ctx->splicing_pages = false; 1793c4d7559SDave Watson 1803c4d7559SDave Watson return 0; 1813c4d7559SDave Watson } 1823c4d7559SDave Watson 1833c4d7559SDave Watson static int tls_handle_open_record(struct sock *sk, int flags) 1843c4d7559SDave Watson { 1853c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 1863c4d7559SDave Watson 1873c4d7559SDave Watson if (tls_is_pending_open_record(ctx)) 1883c4d7559SDave Watson return ctx->push_pending_record(sk, flags); 1893c4d7559SDave Watson 1903c4d7559SDave Watson return 0; 1913c4d7559SDave Watson } 1923c4d7559SDave Watson 19358790314SJakub Kicinski int tls_process_cmsg(struct sock *sk, struct msghdr *msg, 1943c4d7559SDave Watson unsigned char *record_type) 1953c4d7559SDave Watson { 1963c4d7559SDave Watson struct cmsghdr *cmsg; 1973c4d7559SDave Watson int rc = -EINVAL; 1983c4d7559SDave Watson 1993c4d7559SDave Watson for_each_cmsghdr(cmsg, msg) { 2003c4d7559SDave Watson if (!CMSG_OK(msg, cmsg)) 2013c4d7559SDave Watson return -EINVAL; 2023c4d7559SDave Watson if (cmsg->cmsg_level != SOL_TLS) 2033c4d7559SDave Watson continue; 2043c4d7559SDave Watson 2053c4d7559SDave Watson switch (cmsg->cmsg_type) { 2063c4d7559SDave Watson case TLS_SET_RECORD_TYPE: 2073c4d7559SDave Watson if (cmsg->cmsg_len < CMSG_LEN(sizeof(*record_type))) 2083c4d7559SDave Watson return -EINVAL; 2093c4d7559SDave Watson 2103c4d7559SDave Watson if (msg->msg_flags & MSG_MORE) 2113c4d7559SDave Watson return -EINVAL; 2123c4d7559SDave Watson 2133c4d7559SDave Watson rc = tls_handle_open_record(sk, msg->msg_flags); 2143c4d7559SDave Watson if (rc) 2153c4d7559SDave Watson return rc; 2163c4d7559SDave Watson 2173c4d7559SDave Watson *record_type = *(unsigned char *)CMSG_DATA(cmsg); 2183c4d7559SDave Watson rc = 0; 2193c4d7559SDave Watson break; 2203c4d7559SDave Watson default: 2213c4d7559SDave Watson return -EINVAL; 2223c4d7559SDave Watson } 2233c4d7559SDave Watson } 2243c4d7559SDave Watson 2253c4d7559SDave Watson return rc; 2263c4d7559SDave Watson } 2273c4d7559SDave Watson 228a42055e8SVakul Garg int tls_push_partial_record(struct sock *sk, struct tls_context *ctx, 229a42055e8SVakul Garg int flags) 2303c4d7559SDave Watson { 2313c4d7559SDave Watson struct scatterlist *sg; 2323c4d7559SDave Watson u16 offset; 2333c4d7559SDave Watson 2343c4d7559SDave Watson sg = ctx->partially_sent_record; 2353c4d7559SDave Watson offset = ctx->partially_sent_offset; 2363c4d7559SDave Watson 2373c4d7559SDave Watson ctx->partially_sent_record = NULL; 2383c4d7559SDave Watson return tls_push_sg(sk, ctx, sg, offset, flags); 2393c4d7559SDave Watson } 2403c4d7559SDave Watson 241c5daa6ccSJakub Kicinski void tls_free_partial_record(struct sock *sk, struct tls_context *ctx) 24235b71a34SJakub Kicinski { 24335b71a34SJakub Kicinski struct scatterlist *sg; 24435b71a34SJakub Kicinski 245c5daa6ccSJakub Kicinski for (sg = ctx->partially_sent_record; sg; sg = sg_next(sg)) { 24635b71a34SJakub Kicinski put_page(sg_page(sg)); 24735b71a34SJakub Kicinski sk_mem_uncharge(sk, sg->length); 24835b71a34SJakub Kicinski } 24935b71a34SJakub Kicinski ctx->partially_sent_record = NULL; 25035b71a34SJakub Kicinski } 25135b71a34SJakub Kicinski 2523c4d7559SDave Watson static void tls_write_space(struct sock *sk) 2533c4d7559SDave Watson { 2543c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 2553c4d7559SDave Watson 256*e117dcfdSDavid Howells /* If splicing_pages call lower protocol write space handler 25767db7cd2SJohn Fastabend * to ensure we wake up any waiting operations there. For example 258*e117dcfdSDavid Howells * if splicing pages where to call sk_wait_event. 25967db7cd2SJohn Fastabend */ 260*e117dcfdSDavid Howells if (ctx->splicing_pages) { 26167db7cd2SJohn Fastabend ctx->sk_write_space(sk); 262c212d2c7SDave Watson return; 26367db7cd2SJohn Fastabend } 264c212d2c7SDave Watson 2657463d3a2SBoris Pismenny #ifdef CONFIG_TLS_DEVICE 2667463d3a2SBoris Pismenny if (ctx->tx_conf == TLS_HW) 2677463d3a2SBoris Pismenny tls_device_write_space(sk, ctx); 2687463d3a2SBoris Pismenny else 2697463d3a2SBoris Pismenny #endif 2707463d3a2SBoris Pismenny tls_sw_write_space(sk, ctx); 2714504ab0eSVakul Garg 2724504ab0eSVakul Garg ctx->sk_write_space(sk); 2733c4d7559SDave Watson } 2743c4d7559SDave Watson 27515a7dea7SJakub Kicinski /** 27615a7dea7SJakub Kicinski * tls_ctx_free() - free TLS ULP context 27715a7dea7SJakub Kicinski * @sk: socket to with @ctx is attached 27815a7dea7SJakub Kicinski * @ctx: TLS context structure 27915a7dea7SJakub Kicinski * 28015a7dea7SJakub Kicinski * Free TLS context. If @sk is %NULL caller guarantees that the socket 28115a7dea7SJakub Kicinski * to which @ctx was attached has no outstanding references. 28215a7dea7SJakub Kicinski */ 28315a7dea7SJakub Kicinski void tls_ctx_free(struct sock *sk, struct tls_context *ctx) 28486029d10SSabrina Dubroca { 28586029d10SSabrina Dubroca if (!ctx) 28686029d10SSabrina Dubroca return; 28786029d10SSabrina Dubroca 28886029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_send, sizeof(ctx->crypto_send)); 28986029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_recv, sizeof(ctx->crypto_recv)); 29079ffe608SJakub Kicinski mutex_destroy(&ctx->tx_lock); 29115a7dea7SJakub Kicinski 29215a7dea7SJakub Kicinski if (sk) 29315a7dea7SJakub Kicinski kfree_rcu(ctx, rcu); 29415a7dea7SJakub Kicinski else 29586029d10SSabrina Dubroca kfree(ctx); 29686029d10SSabrina Dubroca } 29786029d10SSabrina Dubroca 298313ab004SJohn Fastabend static void tls_sk_proto_cleanup(struct sock *sk, 299313ab004SJohn Fastabend struct tls_context *ctx, long timeo) 3003c4d7559SDave Watson { 3019354544cSDirk van der Merwe if (unlikely(sk->sk_write_pending) && 3029354544cSDirk van der Merwe !wait_on_pending_writer(sk, &timeo)) 3033c4d7559SDave Watson tls_handle_open_record(sk, 0); 3043c4d7559SDave Watson 305f66de3eeSBoris Pismenny /* We need these for tls_sw_fallback handling of other packets */ 306f66de3eeSBoris Pismenny if (ctx->tx_conf == TLS_SW) { 307dbe42559SDave Watson kfree(ctx->tx.rec_seq); 308dbe42559SDave Watson kfree(ctx->tx.iv); 309313ab004SJohn Fastabend tls_sw_release_resources_tx(sk); 310b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXSW); 31135b71a34SJakub Kicinski } else if (ctx->tx_conf == TLS_HW) { 31235b71a34SJakub Kicinski tls_device_free_resources_tx(sk); 313b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXDEVICE); 314f66de3eeSBoris Pismenny } 315f66de3eeSBoris Pismenny 316b32fd3ccSJakub Kicinski if (ctx->rx_conf == TLS_SW) { 317313ab004SJohn Fastabend tls_sw_release_resources_rx(sk); 318b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXSW); 319b32fd3ccSJakub Kicinski } else if (ctx->rx_conf == TLS_HW) { 3204799ac81SBoris Pismenny tls_device_offload_cleanup_rx(sk); 321b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXDEVICE); 322b32fd3ccSJakub Kicinski } 323e8f69799SIlya Lesokhin } 324e8f69799SIlya Lesokhin 325313ab004SJohn Fastabend static void tls_sk_proto_close(struct sock *sk, long timeout) 326313ab004SJohn Fastabend { 32795fa1454SJohn Fastabend struct inet_connection_sock *icsk = inet_csk(sk); 328313ab004SJohn Fastabend struct tls_context *ctx = tls_get_ctx(sk); 329313ab004SJohn Fastabend long timeo = sock_sndtimeo(sk, 0); 330313ab004SJohn Fastabend bool free_ctx; 331313ab004SJohn Fastabend 332313ab004SJohn Fastabend if (ctx->tx_conf == TLS_SW) 333313ab004SJohn Fastabend tls_sw_cancel_work_tx(ctx); 334313ab004SJohn Fastabend 335313ab004SJohn Fastabend lock_sock(sk); 336313ab004SJohn Fastabend free_ctx = ctx->tx_conf != TLS_HW && ctx->rx_conf != TLS_HW; 337313ab004SJohn Fastabend 338313ab004SJohn Fastabend if (ctx->tx_conf != TLS_BASE || ctx->rx_conf != TLS_BASE) 339313ab004SJohn Fastabend tls_sk_proto_cleanup(sk, ctx, timeo); 340313ab004SJohn Fastabend 34195fa1454SJohn Fastabend write_lock_bh(&sk->sk_callback_lock); 34295fa1454SJohn Fastabend if (free_ctx) 34315a7dea7SJakub Kicinski rcu_assign_pointer(icsk->icsk_ulp_data, NULL); 344d5bee737SJakub Sitnicki WRITE_ONCE(sk->sk_prot, ctx->sk_proto); 345d85f0177SJohn Fastabend if (sk->sk_write_space == tls_write_space) 34657c722e9SJakub Kicinski sk->sk_write_space = ctx->sk_write_space; 34795fa1454SJohn Fastabend write_unlock_bh(&sk->sk_callback_lock); 3483c4d7559SDave Watson release_sock(sk); 349313ab004SJohn Fastabend if (ctx->tx_conf == TLS_SW) 350313ab004SJohn Fastabend tls_sw_free_ctx_tx(ctx); 351313ab004SJohn Fastabend if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) 352313ab004SJohn Fastabend tls_sw_strparser_done(ctx); 353313ab004SJohn Fastabend if (ctx->rx_conf == TLS_SW) 354313ab004SJohn Fastabend tls_sw_free_ctx_rx(ctx); 355be7bbea1SJakub Kicinski ctx->sk_proto->close(sk, timeout); 356313ab004SJohn Fastabend 35798f0a395SEric Dumazet if (free_ctx) 35815a7dea7SJakub Kicinski tls_ctx_free(sk, ctx); 3593c4d7559SDave Watson } 3603c4d7559SDave Watson 361ffa81fa4SYutaro Hayakawa static int do_tls_getsockopt_conf(struct sock *sk, char __user *optval, 362ffa81fa4SYutaro Hayakawa int __user *optlen, int tx) 3633c4d7559SDave Watson { 3643c4d7559SDave Watson int rc = 0; 3653c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 3663c4d7559SDave Watson struct tls_crypto_info *crypto_info; 367ffa81fa4SYutaro Hayakawa struct cipher_context *cctx; 3683c4d7559SDave Watson int len; 3693c4d7559SDave Watson 3703c4d7559SDave Watson if (get_user(len, optlen)) 3713c4d7559SDave Watson return -EFAULT; 3723c4d7559SDave Watson 3733c4d7559SDave Watson if (!optval || (len < sizeof(*crypto_info))) { 3743c4d7559SDave Watson rc = -EINVAL; 3753c4d7559SDave Watson goto out; 3763c4d7559SDave Watson } 3773c4d7559SDave Watson 3783c4d7559SDave Watson if (!ctx) { 3793c4d7559SDave Watson rc = -EBUSY; 3803c4d7559SDave Watson goto out; 3813c4d7559SDave Watson } 3823c4d7559SDave Watson 3833c4d7559SDave Watson /* get user crypto info */ 384ffa81fa4SYutaro Hayakawa if (tx) { 38586029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 386ffa81fa4SYutaro Hayakawa cctx = &ctx->tx; 387ffa81fa4SYutaro Hayakawa } else { 388ffa81fa4SYutaro Hayakawa crypto_info = &ctx->crypto_recv.info; 389ffa81fa4SYutaro Hayakawa cctx = &ctx->rx; 390ffa81fa4SYutaro Hayakawa } 3913c4d7559SDave Watson 3923c4d7559SDave Watson if (!TLS_CRYPTO_INFO_READY(crypto_info)) { 3933c4d7559SDave Watson rc = -EBUSY; 3943c4d7559SDave Watson goto out; 3953c4d7559SDave Watson } 3963c4d7559SDave Watson 3975a3b886cSMatthias Rosenfelder if (len == sizeof(*crypto_info)) { 398ac55cd61SDan Carpenter if (copy_to_user(optval, crypto_info, sizeof(*crypto_info))) 399ac55cd61SDan Carpenter rc = -EFAULT; 4003c4d7559SDave Watson goto out; 4013c4d7559SDave Watson } 4023c4d7559SDave Watson 4033c4d7559SDave Watson switch (crypto_info->cipher_type) { 4043c4d7559SDave Watson case TLS_CIPHER_AES_GCM_128: { 4053c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128 * 4063c4d7559SDave Watson crypto_info_aes_gcm_128 = 4073c4d7559SDave Watson container_of(crypto_info, 4083c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128, 4093c4d7559SDave Watson info); 4103c4d7559SDave Watson 4113c4d7559SDave Watson if (len != sizeof(*crypto_info_aes_gcm_128)) { 4123c4d7559SDave Watson rc = -EINVAL; 4133c4d7559SDave Watson goto out; 4143c4d7559SDave Watson } 415a1dfa681SBoris Pismenny memcpy(crypto_info_aes_gcm_128->iv, 416ffa81fa4SYutaro Hayakawa cctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, 4173c4d7559SDave Watson TLS_CIPHER_AES_GCM_128_IV_SIZE); 418ffa81fa4SYutaro Hayakawa memcpy(crypto_info_aes_gcm_128->rec_seq, cctx->rec_seq, 419c410c196SBoris Pismenny TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE); 420ac55cd61SDan Carpenter if (copy_to_user(optval, 4213c4d7559SDave Watson crypto_info_aes_gcm_128, 422ac55cd61SDan Carpenter sizeof(*crypto_info_aes_gcm_128))) 423ac55cd61SDan Carpenter rc = -EFAULT; 4243c4d7559SDave Watson break; 4253c4d7559SDave Watson } 426fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_256: { 427fb99bce7SDave Watson struct tls12_crypto_info_aes_gcm_256 * 428fb99bce7SDave Watson crypto_info_aes_gcm_256 = 429fb99bce7SDave Watson container_of(crypto_info, 430fb99bce7SDave Watson struct tls12_crypto_info_aes_gcm_256, 431fb99bce7SDave Watson info); 432fb99bce7SDave Watson 433fb99bce7SDave Watson if (len != sizeof(*crypto_info_aes_gcm_256)) { 434fb99bce7SDave Watson rc = -EINVAL; 435fb99bce7SDave Watson goto out; 436fb99bce7SDave Watson } 437fb99bce7SDave Watson memcpy(crypto_info_aes_gcm_256->iv, 438ffa81fa4SYutaro Hayakawa cctx->iv + TLS_CIPHER_AES_GCM_256_SALT_SIZE, 439fb99bce7SDave Watson TLS_CIPHER_AES_GCM_256_IV_SIZE); 440ffa81fa4SYutaro Hayakawa memcpy(crypto_info_aes_gcm_256->rec_seq, cctx->rec_seq, 441fb99bce7SDave Watson TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE); 442fb99bce7SDave Watson if (copy_to_user(optval, 443fb99bce7SDave Watson crypto_info_aes_gcm_256, 444fb99bce7SDave Watson sizeof(*crypto_info_aes_gcm_256))) 445fb99bce7SDave Watson rc = -EFAULT; 446fb99bce7SDave Watson break; 447fb99bce7SDave Watson } 4483fb59a5dSTianjia Zhang case TLS_CIPHER_AES_CCM_128: { 4493fb59a5dSTianjia Zhang struct tls12_crypto_info_aes_ccm_128 *aes_ccm_128 = 4503fb59a5dSTianjia Zhang container_of(crypto_info, 4513fb59a5dSTianjia Zhang struct tls12_crypto_info_aes_ccm_128, info); 4523fb59a5dSTianjia Zhang 4533fb59a5dSTianjia Zhang if (len != sizeof(*aes_ccm_128)) { 4543fb59a5dSTianjia Zhang rc = -EINVAL; 4553fb59a5dSTianjia Zhang goto out; 4563fb59a5dSTianjia Zhang } 4573fb59a5dSTianjia Zhang memcpy(aes_ccm_128->iv, 4583fb59a5dSTianjia Zhang cctx->iv + TLS_CIPHER_AES_CCM_128_SALT_SIZE, 4593fb59a5dSTianjia Zhang TLS_CIPHER_AES_CCM_128_IV_SIZE); 4603fb59a5dSTianjia Zhang memcpy(aes_ccm_128->rec_seq, cctx->rec_seq, 4613fb59a5dSTianjia Zhang TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE); 4623fb59a5dSTianjia Zhang if (copy_to_user(optval, aes_ccm_128, sizeof(*aes_ccm_128))) 4633fb59a5dSTianjia Zhang rc = -EFAULT; 4643fb59a5dSTianjia Zhang break; 4653fb59a5dSTianjia Zhang } 4663fb59a5dSTianjia Zhang case TLS_CIPHER_CHACHA20_POLY1305: { 4673fb59a5dSTianjia Zhang struct tls12_crypto_info_chacha20_poly1305 *chacha20_poly1305 = 4683fb59a5dSTianjia Zhang container_of(crypto_info, 4693fb59a5dSTianjia Zhang struct tls12_crypto_info_chacha20_poly1305, 4703fb59a5dSTianjia Zhang info); 4713fb59a5dSTianjia Zhang 4723fb59a5dSTianjia Zhang if (len != sizeof(*chacha20_poly1305)) { 4733fb59a5dSTianjia Zhang rc = -EINVAL; 4743fb59a5dSTianjia Zhang goto out; 4753fb59a5dSTianjia Zhang } 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 if (copy_to_user(optval, chacha20_poly1305, 4823fb59a5dSTianjia Zhang sizeof(*chacha20_poly1305))) 4833fb59a5dSTianjia Zhang rc = -EFAULT; 4843fb59a5dSTianjia Zhang break; 4853fb59a5dSTianjia Zhang } 486227b9644STianjia Zhang case TLS_CIPHER_SM4_GCM: { 487227b9644STianjia Zhang struct tls12_crypto_info_sm4_gcm *sm4_gcm_info = 488227b9644STianjia Zhang container_of(crypto_info, 489227b9644STianjia Zhang struct tls12_crypto_info_sm4_gcm, info); 490227b9644STianjia Zhang 491227b9644STianjia Zhang if (len != sizeof(*sm4_gcm_info)) { 492227b9644STianjia Zhang rc = -EINVAL; 493227b9644STianjia Zhang goto out; 494227b9644STianjia Zhang } 495227b9644STianjia Zhang memcpy(sm4_gcm_info->iv, 496227b9644STianjia Zhang cctx->iv + TLS_CIPHER_SM4_GCM_SALT_SIZE, 497227b9644STianjia Zhang TLS_CIPHER_SM4_GCM_IV_SIZE); 498227b9644STianjia Zhang memcpy(sm4_gcm_info->rec_seq, cctx->rec_seq, 499227b9644STianjia Zhang TLS_CIPHER_SM4_GCM_REC_SEQ_SIZE); 500227b9644STianjia Zhang if (copy_to_user(optval, sm4_gcm_info, sizeof(*sm4_gcm_info))) 501227b9644STianjia Zhang rc = -EFAULT; 502227b9644STianjia Zhang break; 503227b9644STianjia Zhang } 504227b9644STianjia Zhang case TLS_CIPHER_SM4_CCM: { 505227b9644STianjia Zhang struct tls12_crypto_info_sm4_ccm *sm4_ccm_info = 506227b9644STianjia Zhang container_of(crypto_info, 507227b9644STianjia Zhang struct tls12_crypto_info_sm4_ccm, info); 508227b9644STianjia Zhang 509227b9644STianjia Zhang if (len != sizeof(*sm4_ccm_info)) { 510227b9644STianjia Zhang rc = -EINVAL; 511227b9644STianjia Zhang goto out; 512227b9644STianjia Zhang } 513227b9644STianjia Zhang memcpy(sm4_ccm_info->iv, 514227b9644STianjia Zhang cctx->iv + TLS_CIPHER_SM4_CCM_SALT_SIZE, 515227b9644STianjia Zhang TLS_CIPHER_SM4_CCM_IV_SIZE); 516227b9644STianjia Zhang memcpy(sm4_ccm_info->rec_seq, cctx->rec_seq, 517227b9644STianjia Zhang TLS_CIPHER_SM4_CCM_REC_SEQ_SIZE); 518227b9644STianjia Zhang if (copy_to_user(optval, sm4_ccm_info, sizeof(*sm4_ccm_info))) 519227b9644STianjia Zhang rc = -EFAULT; 520227b9644STianjia Zhang break; 521227b9644STianjia Zhang } 52262e56ef5STaehee Yoo case TLS_CIPHER_ARIA_GCM_128: { 52362e56ef5STaehee Yoo struct tls12_crypto_info_aria_gcm_128 * 52462e56ef5STaehee Yoo crypto_info_aria_gcm_128 = 52562e56ef5STaehee Yoo container_of(crypto_info, 52662e56ef5STaehee Yoo struct tls12_crypto_info_aria_gcm_128, 52762e56ef5STaehee Yoo info); 52862e56ef5STaehee Yoo 52962e56ef5STaehee Yoo if (len != sizeof(*crypto_info_aria_gcm_128)) { 53062e56ef5STaehee Yoo rc = -EINVAL; 53162e56ef5STaehee Yoo goto out; 53262e56ef5STaehee Yoo } 53362e56ef5STaehee Yoo memcpy(crypto_info_aria_gcm_128->iv, 53462e56ef5STaehee Yoo cctx->iv + TLS_CIPHER_ARIA_GCM_128_SALT_SIZE, 53562e56ef5STaehee Yoo TLS_CIPHER_ARIA_GCM_128_IV_SIZE); 53662e56ef5STaehee Yoo memcpy(crypto_info_aria_gcm_128->rec_seq, cctx->rec_seq, 53762e56ef5STaehee Yoo TLS_CIPHER_ARIA_GCM_128_REC_SEQ_SIZE); 53862e56ef5STaehee Yoo if (copy_to_user(optval, 53962e56ef5STaehee Yoo crypto_info_aria_gcm_128, 54062e56ef5STaehee Yoo sizeof(*crypto_info_aria_gcm_128))) 54162e56ef5STaehee Yoo rc = -EFAULT; 54262e56ef5STaehee Yoo break; 54362e56ef5STaehee Yoo } 54462e56ef5STaehee Yoo case TLS_CIPHER_ARIA_GCM_256: { 54562e56ef5STaehee Yoo struct tls12_crypto_info_aria_gcm_256 * 54662e56ef5STaehee Yoo crypto_info_aria_gcm_256 = 54762e56ef5STaehee Yoo container_of(crypto_info, 54862e56ef5STaehee Yoo struct tls12_crypto_info_aria_gcm_256, 54962e56ef5STaehee Yoo info); 55062e56ef5STaehee Yoo 55162e56ef5STaehee Yoo if (len != sizeof(*crypto_info_aria_gcm_256)) { 55262e56ef5STaehee Yoo rc = -EINVAL; 55362e56ef5STaehee Yoo goto out; 55462e56ef5STaehee Yoo } 55562e56ef5STaehee Yoo memcpy(crypto_info_aria_gcm_256->iv, 55662e56ef5STaehee Yoo cctx->iv + TLS_CIPHER_ARIA_GCM_256_SALT_SIZE, 55762e56ef5STaehee Yoo TLS_CIPHER_ARIA_GCM_256_IV_SIZE); 55862e56ef5STaehee Yoo memcpy(crypto_info_aria_gcm_256->rec_seq, cctx->rec_seq, 55962e56ef5STaehee Yoo TLS_CIPHER_ARIA_GCM_256_REC_SEQ_SIZE); 56062e56ef5STaehee Yoo if (copy_to_user(optval, 56162e56ef5STaehee Yoo crypto_info_aria_gcm_256, 56262e56ef5STaehee Yoo sizeof(*crypto_info_aria_gcm_256))) 56362e56ef5STaehee Yoo rc = -EFAULT; 56462e56ef5STaehee Yoo break; 56562e56ef5STaehee Yoo } 5663c4d7559SDave Watson default: 5673c4d7559SDave Watson rc = -EINVAL; 5683c4d7559SDave Watson } 5693c4d7559SDave Watson 5703c4d7559SDave Watson out: 5713c4d7559SDave Watson return rc; 5723c4d7559SDave Watson } 5733c4d7559SDave Watson 574c1318b39SBoris Pismenny static int do_tls_getsockopt_tx_zc(struct sock *sk, char __user *optval, 575c1318b39SBoris Pismenny int __user *optlen) 576c1318b39SBoris Pismenny { 577c1318b39SBoris Pismenny struct tls_context *ctx = tls_get_ctx(sk); 578c1318b39SBoris Pismenny unsigned int value; 579c1318b39SBoris Pismenny int len; 580c1318b39SBoris Pismenny 581c1318b39SBoris Pismenny if (get_user(len, optlen)) 582c1318b39SBoris Pismenny return -EFAULT; 583c1318b39SBoris Pismenny 584c1318b39SBoris Pismenny if (len != sizeof(value)) 585c1318b39SBoris Pismenny return -EINVAL; 586c1318b39SBoris Pismenny 587c1318b39SBoris Pismenny value = ctx->zerocopy_sendfile; 588c1318b39SBoris Pismenny if (copy_to_user(optval, &value, sizeof(value))) 589c1318b39SBoris Pismenny return -EFAULT; 590c1318b39SBoris Pismenny 591c1318b39SBoris Pismenny return 0; 592c1318b39SBoris Pismenny } 593c1318b39SBoris Pismenny 59488527790SJakub Kicinski static int do_tls_getsockopt_no_pad(struct sock *sk, char __user *optval, 59588527790SJakub Kicinski int __user *optlen) 59688527790SJakub Kicinski { 59788527790SJakub Kicinski struct tls_context *ctx = tls_get_ctx(sk); 59857128e98SJakub Kicinski int value, len; 59988527790SJakub Kicinski 60088527790SJakub Kicinski if (ctx->prot_info.version != TLS_1_3_VERSION) 60188527790SJakub Kicinski return -EINVAL; 60288527790SJakub Kicinski 60388527790SJakub Kicinski if (get_user(len, optlen)) 60488527790SJakub Kicinski return -EFAULT; 60588527790SJakub Kicinski if (len < sizeof(value)) 60688527790SJakub Kicinski return -EINVAL; 60788527790SJakub Kicinski 60857128e98SJakub Kicinski value = -EINVAL; 60988527790SJakub Kicinski if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) 61088527790SJakub Kicinski value = ctx->rx_no_pad; 61157128e98SJakub Kicinski if (value < 0) 61257128e98SJakub Kicinski return value; 61388527790SJakub Kicinski 61488527790SJakub Kicinski if (put_user(sizeof(value), optlen)) 61588527790SJakub Kicinski return -EFAULT; 61688527790SJakub Kicinski if (copy_to_user(optval, &value, sizeof(value))) 61788527790SJakub Kicinski return -EFAULT; 61888527790SJakub Kicinski 61988527790SJakub Kicinski return 0; 62088527790SJakub Kicinski } 62188527790SJakub Kicinski 6223c4d7559SDave Watson static int do_tls_getsockopt(struct sock *sk, int optname, 6233c4d7559SDave Watson char __user *optval, int __user *optlen) 6243c4d7559SDave Watson { 6253c4d7559SDave Watson int rc = 0; 6263c4d7559SDave Watson 62749c47cc2SHangyu Hua lock_sock(sk); 62849c47cc2SHangyu Hua 6293c4d7559SDave Watson switch (optname) { 6303c4d7559SDave Watson case TLS_TX: 631ffa81fa4SYutaro Hayakawa case TLS_RX: 632ffa81fa4SYutaro Hayakawa rc = do_tls_getsockopt_conf(sk, optval, optlen, 633ffa81fa4SYutaro Hayakawa optname == TLS_TX); 6343c4d7559SDave Watson break; 635b489a6e5SMaxim Mikityanskiy case TLS_TX_ZEROCOPY_RO: 636c1318b39SBoris Pismenny rc = do_tls_getsockopt_tx_zc(sk, optval, optlen); 637c1318b39SBoris Pismenny break; 63888527790SJakub Kicinski case TLS_RX_EXPECT_NO_PAD: 63988527790SJakub Kicinski rc = do_tls_getsockopt_no_pad(sk, optval, optlen); 64088527790SJakub Kicinski break; 6413c4d7559SDave Watson default: 6423c4d7559SDave Watson rc = -ENOPROTOOPT; 6433c4d7559SDave Watson break; 6443c4d7559SDave Watson } 64549c47cc2SHangyu Hua 64649c47cc2SHangyu Hua release_sock(sk); 64749c47cc2SHangyu Hua 6483c4d7559SDave Watson return rc; 6493c4d7559SDave Watson } 6503c4d7559SDave Watson 6513c4d7559SDave Watson static int tls_getsockopt(struct sock *sk, int level, int optname, 6523c4d7559SDave Watson char __user *optval, int __user *optlen) 6533c4d7559SDave Watson { 6543c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 6553c4d7559SDave Watson 6563c4d7559SDave Watson if (level != SOL_TLS) 657be7bbea1SJakub Kicinski return ctx->sk_proto->getsockopt(sk, level, 658be7bbea1SJakub Kicinski optname, optval, optlen); 6593c4d7559SDave Watson 6603c4d7559SDave Watson return do_tls_getsockopt(sk, optname, optval, optlen); 6613c4d7559SDave Watson } 6623c4d7559SDave Watson 663a7b75c5aSChristoph Hellwig static int do_tls_setsockopt_conf(struct sock *sk, sockptr_t optval, 664c46234ebSDave Watson unsigned int optlen, int tx) 6653c4d7559SDave Watson { 666196c31b4SIlya Lesokhin struct tls_crypto_info *crypto_info; 6674509de14SVakul Garg struct tls_crypto_info *alt_crypto_info; 6683c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 669fb99bce7SDave Watson size_t optsize; 6703c4d7559SDave Watson int rc = 0; 67158371585SDave Watson int conf; 6723c4d7559SDave Watson 6731ddcbfbfSZiyang Xuan if (sockptr_is_null(optval) || (optlen < sizeof(*crypto_info))) 6741ddcbfbfSZiyang Xuan return -EINVAL; 6753c4d7559SDave Watson 6764509de14SVakul Garg if (tx) { 67786029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 6784509de14SVakul Garg alt_crypto_info = &ctx->crypto_recv.info; 6794509de14SVakul Garg } else { 68086029d10SSabrina Dubroca crypto_info = &ctx->crypto_recv.info; 6814509de14SVakul Garg alt_crypto_info = &ctx->crypto_send.info; 6824509de14SVakul Garg } 683c46234ebSDave Watson 684196c31b4SIlya Lesokhin /* Currently we don't support set crypto info more than one time */ 6851ddcbfbfSZiyang Xuan if (TLS_CRYPTO_INFO_READY(crypto_info)) 6861ddcbfbfSZiyang Xuan return -EBUSY; 687196c31b4SIlya Lesokhin 688a7b75c5aSChristoph Hellwig rc = copy_from_sockptr(crypto_info, optval, sizeof(*crypto_info)); 6893c4d7559SDave Watson if (rc) { 6903c4d7559SDave Watson rc = -EFAULT; 691257082e6SBoris Pismenny goto err_crypto_info; 6923c4d7559SDave Watson } 6933c4d7559SDave Watson 6943c4d7559SDave Watson /* check version */ 695130b392cSDave Watson if (crypto_info->version != TLS_1_2_VERSION && 696130b392cSDave Watson crypto_info->version != TLS_1_3_VERSION) { 6974a5cdc60SValentin Vidic rc = -EINVAL; 698196c31b4SIlya Lesokhin goto err_crypto_info; 6993c4d7559SDave Watson } 7003c4d7559SDave Watson 7014509de14SVakul Garg /* Ensure that TLS version and ciphers are same in both directions */ 7024509de14SVakul Garg if (TLS_CRYPTO_INFO_READY(alt_crypto_info)) { 7034509de14SVakul Garg if (alt_crypto_info->version != crypto_info->version || 7044509de14SVakul Garg alt_crypto_info->cipher_type != crypto_info->cipher_type) { 7054509de14SVakul Garg rc = -EINVAL; 7064509de14SVakul Garg goto err_crypto_info; 7074509de14SVakul Garg } 7084509de14SVakul Garg } 7094509de14SVakul Garg 710196c31b4SIlya Lesokhin switch (crypto_info->cipher_type) { 711fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_128: 712f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_gcm_128); 713f295b3aeSVakul Garg break; 714fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_256: { 715f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_gcm_256); 716f295b3aeSVakul Garg break; 717f295b3aeSVakul Garg } 718f295b3aeSVakul Garg case TLS_CIPHER_AES_CCM_128: 719f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_ccm_128); 720f295b3aeSVakul Garg break; 72174ea6106SVadim Fedorenko case TLS_CIPHER_CHACHA20_POLY1305: 72274ea6106SVadim Fedorenko optsize = sizeof(struct tls12_crypto_info_chacha20_poly1305); 72374ea6106SVadim Fedorenko break; 724227b9644STianjia Zhang case TLS_CIPHER_SM4_GCM: 725227b9644STianjia Zhang optsize = sizeof(struct tls12_crypto_info_sm4_gcm); 726227b9644STianjia Zhang break; 727227b9644STianjia Zhang case TLS_CIPHER_SM4_CCM: 728227b9644STianjia Zhang optsize = sizeof(struct tls12_crypto_info_sm4_ccm); 729227b9644STianjia Zhang break; 73062e56ef5STaehee Yoo case TLS_CIPHER_ARIA_GCM_128: 73162e56ef5STaehee Yoo if (crypto_info->version != TLS_1_2_VERSION) { 73262e56ef5STaehee Yoo rc = -EINVAL; 73362e56ef5STaehee Yoo goto err_crypto_info; 73462e56ef5STaehee Yoo } 73562e56ef5STaehee Yoo optsize = sizeof(struct tls12_crypto_info_aria_gcm_128); 73662e56ef5STaehee Yoo break; 73762e56ef5STaehee Yoo case TLS_CIPHER_ARIA_GCM_256: 73862e56ef5STaehee Yoo if (crypto_info->version != TLS_1_2_VERSION) { 73962e56ef5STaehee Yoo rc = -EINVAL; 74062e56ef5STaehee Yoo goto err_crypto_info; 74162e56ef5STaehee Yoo } 74262e56ef5STaehee Yoo optsize = sizeof(struct tls12_crypto_info_aria_gcm_256); 74362e56ef5STaehee Yoo break; 744f295b3aeSVakul Garg default: 745f295b3aeSVakul Garg rc = -EINVAL; 746f295b3aeSVakul Garg goto err_crypto_info; 747f295b3aeSVakul Garg } 748f295b3aeSVakul Garg 749fb99bce7SDave Watson if (optlen != optsize) { 7503c4d7559SDave Watson rc = -EINVAL; 7516db959c8SSabrina Dubroca goto err_crypto_info; 7523c4d7559SDave Watson } 753f295b3aeSVakul Garg 754d3c48151SChristoph Hellwig rc = copy_from_sockptr_offset(crypto_info + 1, optval, 755d3c48151SChristoph Hellwig sizeof(*crypto_info), 756196c31b4SIlya Lesokhin optlen - sizeof(*crypto_info)); 7573c4d7559SDave Watson if (rc) { 7583c4d7559SDave Watson rc = -EFAULT; 7593c4d7559SDave Watson goto err_crypto_info; 7603c4d7559SDave Watson } 7613c4d7559SDave Watson 762c46234ebSDave Watson if (tx) { 763e8f69799SIlya Lesokhin rc = tls_set_device_offload(sk, ctx); 764e8f69799SIlya Lesokhin conf = TLS_HW; 765b32fd3ccSJakub Kicinski if (!rc) { 766b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSTXDEVICE); 767b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXDEVICE); 768b32fd3ccSJakub Kicinski } else { 769c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 1); 770318892acSJakub Kicinski if (rc) 771318892acSJakub Kicinski goto err_crypto_info; 772b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSTXSW); 773b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXSW); 774f66de3eeSBoris Pismenny conf = TLS_SW; 775e8f69799SIlya Lesokhin } 776c46234ebSDave Watson } else { 7774799ac81SBoris Pismenny rc = tls_set_device_offload_rx(sk, ctx); 7784799ac81SBoris Pismenny conf = TLS_HW; 779b32fd3ccSJakub Kicinski if (!rc) { 780b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXDEVICE); 781b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXDEVICE); 782b32fd3ccSJakub Kicinski } else { 783c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 0); 784318892acSJakub Kicinski if (rc) 785318892acSJakub Kicinski goto err_crypto_info; 786b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXSW); 787b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXSW); 788f66de3eeSBoris Pismenny conf = TLS_SW; 789c46234ebSDave Watson } 790313ab004SJohn Fastabend tls_sw_strparser_arm(sk, ctx); 7914799ac81SBoris Pismenny } 792c46234ebSDave Watson 793f66de3eeSBoris Pismenny if (tx) 794f66de3eeSBoris Pismenny ctx->tx_conf = conf; 795f66de3eeSBoris Pismenny else 796f66de3eeSBoris Pismenny ctx->rx_conf = conf; 7976d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 798c46234ebSDave Watson if (tx) { 799ee181e52SIlya Lesokhin ctx->sk_write_space = sk->sk_write_space; 800ee181e52SIlya Lesokhin sk->sk_write_space = tls_write_space; 80184c61fe1SJakub Kicinski } else { 80284c61fe1SJakub Kicinski struct tls_sw_context_rx *rx_ctx = tls_sw_ctx_rx(ctx); 80384c61fe1SJakub Kicinski 80484c61fe1SJakub Kicinski tls_strp_check_rcv(&rx_ctx->strp); 805c46234ebSDave Watson } 8061ddcbfbfSZiyang Xuan return 0; 8073c4d7559SDave Watson 8083c4d7559SDave Watson err_crypto_info: 809c844eb46SSabrina Dubroca memzero_explicit(crypto_info, sizeof(union tls_crypto_context)); 8103c4d7559SDave Watson return rc; 8113c4d7559SDave Watson } 8123c4d7559SDave Watson 813c1318b39SBoris Pismenny static int do_tls_setsockopt_tx_zc(struct sock *sk, sockptr_t optval, 814c1318b39SBoris Pismenny unsigned int optlen) 815c1318b39SBoris Pismenny { 816c1318b39SBoris Pismenny struct tls_context *ctx = tls_get_ctx(sk); 817c1318b39SBoris Pismenny unsigned int value; 818c1318b39SBoris Pismenny 819c1318b39SBoris Pismenny if (sockptr_is_null(optval) || optlen != sizeof(value)) 820c1318b39SBoris Pismenny return -EINVAL; 821c1318b39SBoris Pismenny 822c1318b39SBoris Pismenny if (copy_from_sockptr(&value, optval, sizeof(value))) 823c1318b39SBoris Pismenny return -EFAULT; 824c1318b39SBoris Pismenny 825c1318b39SBoris Pismenny if (value > 1) 826c1318b39SBoris Pismenny return -EINVAL; 827c1318b39SBoris Pismenny 828c1318b39SBoris Pismenny ctx->zerocopy_sendfile = value; 829c1318b39SBoris Pismenny 830c1318b39SBoris Pismenny return 0; 831c1318b39SBoris Pismenny } 832c1318b39SBoris Pismenny 83388527790SJakub Kicinski static int do_tls_setsockopt_no_pad(struct sock *sk, sockptr_t optval, 83488527790SJakub Kicinski unsigned int optlen) 83588527790SJakub Kicinski { 83688527790SJakub Kicinski struct tls_context *ctx = tls_get_ctx(sk); 83788527790SJakub Kicinski u32 val; 83888527790SJakub Kicinski int rc; 83988527790SJakub Kicinski 84088527790SJakub Kicinski if (ctx->prot_info.version != TLS_1_3_VERSION || 84188527790SJakub Kicinski sockptr_is_null(optval) || optlen < sizeof(val)) 84288527790SJakub Kicinski return -EINVAL; 84388527790SJakub Kicinski 84488527790SJakub Kicinski rc = copy_from_sockptr(&val, optval, sizeof(val)); 84588527790SJakub Kicinski if (rc) 84688527790SJakub Kicinski return -EFAULT; 84788527790SJakub Kicinski if (val > 1) 84888527790SJakub Kicinski return -EINVAL; 84988527790SJakub Kicinski rc = check_zeroed_sockptr(optval, sizeof(val), optlen - sizeof(val)); 85088527790SJakub Kicinski if (rc < 1) 85188527790SJakub Kicinski return rc == 0 ? -EINVAL : rc; 85288527790SJakub Kicinski 85388527790SJakub Kicinski lock_sock(sk); 85488527790SJakub Kicinski rc = -EINVAL; 85588527790SJakub Kicinski if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) { 85688527790SJakub Kicinski ctx->rx_no_pad = val; 85788527790SJakub Kicinski tls_update_rx_zc_capable(ctx); 85888527790SJakub Kicinski rc = 0; 85988527790SJakub Kicinski } 86088527790SJakub Kicinski release_sock(sk); 86188527790SJakub Kicinski 86288527790SJakub Kicinski return rc; 86388527790SJakub Kicinski } 86488527790SJakub Kicinski 865a7b75c5aSChristoph Hellwig static int do_tls_setsockopt(struct sock *sk, int optname, sockptr_t optval, 866a7b75c5aSChristoph Hellwig unsigned int optlen) 8673c4d7559SDave Watson { 8683c4d7559SDave Watson int rc = 0; 8693c4d7559SDave Watson 8703c4d7559SDave Watson switch (optname) { 8713c4d7559SDave Watson case TLS_TX: 872c46234ebSDave Watson case TLS_RX: 8733c4d7559SDave Watson lock_sock(sk); 874c46234ebSDave Watson rc = do_tls_setsockopt_conf(sk, optval, optlen, 875c46234ebSDave Watson optname == TLS_TX); 8763c4d7559SDave Watson release_sock(sk); 8773c4d7559SDave Watson break; 878b489a6e5SMaxim Mikityanskiy case TLS_TX_ZEROCOPY_RO: 879c1318b39SBoris Pismenny lock_sock(sk); 880c1318b39SBoris Pismenny rc = do_tls_setsockopt_tx_zc(sk, optval, optlen); 881c1318b39SBoris Pismenny release_sock(sk); 882c1318b39SBoris Pismenny break; 88388527790SJakub Kicinski case TLS_RX_EXPECT_NO_PAD: 88488527790SJakub Kicinski rc = do_tls_setsockopt_no_pad(sk, optval, optlen); 88588527790SJakub Kicinski break; 8863c4d7559SDave Watson default: 8873c4d7559SDave Watson rc = -ENOPROTOOPT; 8883c4d7559SDave Watson break; 8893c4d7559SDave Watson } 8903c4d7559SDave Watson return rc; 8913c4d7559SDave Watson } 8923c4d7559SDave Watson 8933c4d7559SDave Watson static int tls_setsockopt(struct sock *sk, int level, int optname, 894a7b75c5aSChristoph Hellwig sockptr_t optval, unsigned int optlen) 8953c4d7559SDave Watson { 8963c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 8973c4d7559SDave Watson 8983c4d7559SDave Watson if (level != SOL_TLS) 899be7bbea1SJakub Kicinski return ctx->sk_proto->setsockopt(sk, level, optname, optval, 900be7bbea1SJakub Kicinski optlen); 9013c4d7559SDave Watson 9023c4d7559SDave Watson return do_tls_setsockopt(sk, optname, optval, optlen); 9033c4d7559SDave Watson } 9043c4d7559SDave Watson 90508700dabSJakub Kicinski struct tls_context *tls_ctx_create(struct sock *sk) 906dd0bed16SAtul Gupta { 907dd0bed16SAtul Gupta struct inet_connection_sock *icsk = inet_csk(sk); 908dd0bed16SAtul Gupta struct tls_context *ctx; 909dd0bed16SAtul Gupta 910c6ec179aSGanesh Goudar ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC); 911dd0bed16SAtul Gupta if (!ctx) 912dd0bed16SAtul Gupta return NULL; 913dd0bed16SAtul Gupta 91479ffe608SJakub Kicinski mutex_init(&ctx->tx_lock); 91515a7dea7SJakub Kicinski rcu_assign_pointer(icsk->icsk_ulp_data, ctx); 916d5bee737SJakub Sitnicki ctx->sk_proto = READ_ONCE(sk->sk_prot); 917c55dcdd4SMaxim Mikityanskiy ctx->sk = sk; 918dd0bed16SAtul Gupta return ctx; 919dd0bed16SAtul Gupta } 920dd0bed16SAtul Gupta 921f3911f73SJakub Kicinski static void build_proto_ops(struct proto_ops ops[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 922f3911f73SJakub Kicinski const struct proto_ops *base) 923f3911f73SJakub Kicinski { 924f3911f73SJakub Kicinski ops[TLS_BASE][TLS_BASE] = *base; 925f3911f73SJakub Kicinski 926f3911f73SJakub Kicinski ops[TLS_SW ][TLS_BASE] = ops[TLS_BASE][TLS_BASE]; 927f3911f73SJakub Kicinski ops[TLS_SW ][TLS_BASE].sendpage_locked = tls_sw_sendpage_locked; 928f3911f73SJakub Kicinski 929f3911f73SJakub Kicinski ops[TLS_BASE][TLS_SW ] = ops[TLS_BASE][TLS_BASE]; 930f3911f73SJakub Kicinski ops[TLS_BASE][TLS_SW ].splice_read = tls_sw_splice_read; 931f3911f73SJakub Kicinski 932f3911f73SJakub Kicinski ops[TLS_SW ][TLS_SW ] = ops[TLS_SW ][TLS_BASE]; 933f3911f73SJakub Kicinski ops[TLS_SW ][TLS_SW ].splice_read = tls_sw_splice_read; 934f3911f73SJakub Kicinski 935f3911f73SJakub Kicinski #ifdef CONFIG_TLS_DEVICE 936f3911f73SJakub Kicinski ops[TLS_HW ][TLS_BASE] = ops[TLS_BASE][TLS_BASE]; 937f3911f73SJakub Kicinski ops[TLS_HW ][TLS_BASE].sendpage_locked = NULL; 938f3911f73SJakub Kicinski 939f3911f73SJakub Kicinski ops[TLS_HW ][TLS_SW ] = ops[TLS_BASE][TLS_SW ]; 940f3911f73SJakub Kicinski ops[TLS_HW ][TLS_SW ].sendpage_locked = NULL; 941f3911f73SJakub Kicinski 942f3911f73SJakub Kicinski ops[TLS_BASE][TLS_HW ] = ops[TLS_BASE][TLS_SW ]; 943f3911f73SJakub Kicinski 944f3911f73SJakub Kicinski ops[TLS_SW ][TLS_HW ] = ops[TLS_SW ][TLS_SW ]; 945f3911f73SJakub Kicinski 946f3911f73SJakub Kicinski ops[TLS_HW ][TLS_HW ] = ops[TLS_HW ][TLS_SW ]; 947f3911f73SJakub Kicinski ops[TLS_HW ][TLS_HW ].sendpage_locked = NULL; 948f3911f73SJakub Kicinski #endif 949f3911f73SJakub Kicinski #ifdef CONFIG_TLS_TOE 950f3911f73SJakub Kicinski ops[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 951f3911f73SJakub Kicinski #endif 952f3911f73SJakub Kicinski } 953f3911f73SJakub Kicinski 95463a6b3feSAtul Gupta static void tls_build_proto(struct sock *sk) 95563a6b3feSAtul Gupta { 95663a6b3feSAtul Gupta int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 9579a893949SWill Deacon struct proto *prot = READ_ONCE(sk->sk_prot); 95863a6b3feSAtul Gupta 95963a6b3feSAtul Gupta /* Build IPv6 TLS whenever the address of tcpv6 _prot changes */ 96063a6b3feSAtul Gupta if (ip_ver == TLSV6 && 9615bb4c45dSJakub Sitnicki unlikely(prot != smp_load_acquire(&saved_tcpv6_prot))) { 96263a6b3feSAtul Gupta mutex_lock(&tcpv6_prot_mutex); 9635bb4c45dSJakub Sitnicki if (likely(prot != saved_tcpv6_prot)) { 9645bb4c45dSJakub Sitnicki build_protos(tls_prots[TLSV6], prot); 965f3911f73SJakub Kicinski build_proto_ops(tls_proto_ops[TLSV6], 966f3911f73SJakub Kicinski sk->sk_socket->ops); 9675bb4c45dSJakub Sitnicki smp_store_release(&saved_tcpv6_prot, prot); 96863a6b3feSAtul Gupta } 96963a6b3feSAtul Gupta mutex_unlock(&tcpv6_prot_mutex); 97063a6b3feSAtul Gupta } 97163a6b3feSAtul Gupta 97263a6b3feSAtul Gupta if (ip_ver == TLSV4 && 9735bb4c45dSJakub Sitnicki unlikely(prot != smp_load_acquire(&saved_tcpv4_prot))) { 97463a6b3feSAtul Gupta mutex_lock(&tcpv4_prot_mutex); 9755bb4c45dSJakub Sitnicki if (likely(prot != saved_tcpv4_prot)) { 9765bb4c45dSJakub Sitnicki build_protos(tls_prots[TLSV4], prot); 977f3911f73SJakub Kicinski build_proto_ops(tls_proto_ops[TLSV4], 978f3911f73SJakub Kicinski sk->sk_socket->ops); 9795bb4c45dSJakub Sitnicki smp_store_release(&saved_tcpv4_prot, prot); 98063a6b3feSAtul Gupta } 98163a6b3feSAtul Gupta mutex_unlock(&tcpv4_prot_mutex); 98263a6b3feSAtul Gupta } 98363a6b3feSAtul Gupta } 98463a6b3feSAtul Gupta 985f66de3eeSBoris Pismenny static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 986f13fe3e6SJakub Sitnicki const struct proto *base) 987c113187dSBoris Pismenny { 988f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE] = *base; 989f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].setsockopt = tls_setsockopt; 990f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].getsockopt = tls_getsockopt; 991f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].close = tls_sk_proto_close; 992c113187dSBoris Pismenny 993f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 994f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendmsg = tls_sw_sendmsg; 995f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendpage = tls_sw_sendpage; 996c46234ebSDave Watson 997f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW] = prot[TLS_BASE][TLS_BASE]; 998f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].recvmsg = tls_sw_recvmsg; 9997b50ecfcSCong Wang prot[TLS_BASE][TLS_SW].sock_is_readable = tls_sw_sock_is_readable; 1000f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].close = tls_sk_proto_close; 1001c46234ebSDave Watson 1002f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW] = prot[TLS_SW][TLS_BASE]; 1003f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].recvmsg = tls_sw_recvmsg; 10047b50ecfcSCong Wang prot[TLS_SW][TLS_SW].sock_is_readable = tls_sw_sock_is_readable; 1005f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].close = tls_sk_proto_close; 1006dd0bed16SAtul Gupta 1007e8f69799SIlya Lesokhin #ifdef CONFIG_TLS_DEVICE 1008e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 1009e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendmsg = tls_device_sendmsg; 1010e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendpage = tls_device_sendpage; 1011e8f69799SIlya Lesokhin 1012e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW] = prot[TLS_BASE][TLS_SW]; 1013e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendmsg = tls_device_sendmsg; 1014e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendpage = tls_device_sendpage; 10154799ac81SBoris Pismenny 10164799ac81SBoris Pismenny prot[TLS_BASE][TLS_HW] = prot[TLS_BASE][TLS_SW]; 10174799ac81SBoris Pismenny 10184799ac81SBoris Pismenny prot[TLS_SW][TLS_HW] = prot[TLS_SW][TLS_SW]; 10194799ac81SBoris Pismenny 10204799ac81SBoris Pismenny prot[TLS_HW][TLS_HW] = prot[TLS_HW][TLS_SW]; 1021e8f69799SIlya Lesokhin #endif 102253b4414aSJakub Kicinski #ifdef CONFIG_TLS_TOE 1023f66de3eeSBoris Pismenny prot[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 10240eb8745eSJakub Kicinski prot[TLS_HW_RECORD][TLS_HW_RECORD].hash = tls_toe_hash; 10250eb8745eSJakub Kicinski prot[TLS_HW_RECORD][TLS_HW_RECORD].unhash = tls_toe_unhash; 102653b4414aSJakub Kicinski #endif 1027c113187dSBoris Pismenny } 1028c113187dSBoris Pismenny 10293c4d7559SDave Watson static int tls_init(struct sock *sk) 10303c4d7559SDave Watson { 10313c4d7559SDave Watson struct tls_context *ctx; 10323c4d7559SDave Watson int rc = 0; 10333c4d7559SDave Watson 103416bed0e6SJakub Kicinski tls_build_proto(sk); 103516bed0e6SJakub Kicinski 103653b4414aSJakub Kicinski #ifdef CONFIG_TLS_TOE 10370eb8745eSJakub Kicinski if (tls_toe_bypass(sk)) 103895fa1454SJohn Fastabend return 0; 103953b4414aSJakub Kicinski #endif 1040dd0bed16SAtul Gupta 1041d91c3e17SIlya Lesokhin /* The TLS ulp is currently supported only for TCP sockets 1042d91c3e17SIlya Lesokhin * in ESTABLISHED state. 1043d91c3e17SIlya Lesokhin * Supporting sockets in LISTEN state will require us 1044d91c3e17SIlya Lesokhin * to modify the accept implementation to clone rather then 1045d91c3e17SIlya Lesokhin * share the ulp context. 1046d91c3e17SIlya Lesokhin */ 1047d91c3e17SIlya Lesokhin if (sk->sk_state != TCP_ESTABLISHED) 10484a5cdc60SValentin Vidic return -ENOTCONN; 1049d91c3e17SIlya Lesokhin 10503c4d7559SDave Watson /* allocate tls context */ 105195fa1454SJohn Fastabend write_lock_bh(&sk->sk_callback_lock); 105208700dabSJakub Kicinski ctx = tls_ctx_create(sk); 10533c4d7559SDave Watson if (!ctx) { 10543c4d7559SDave Watson rc = -ENOMEM; 10553c4d7559SDave Watson goto out; 10563c4d7559SDave Watson } 10576d88207fSIlya Lesokhin 1058f66de3eeSBoris Pismenny ctx->tx_conf = TLS_BASE; 1059f66de3eeSBoris Pismenny ctx->rx_conf = TLS_BASE; 10606d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 10613c4d7559SDave Watson out: 106295fa1454SJohn Fastabend write_unlock_bh(&sk->sk_callback_lock); 10633c4d7559SDave Watson return rc; 10643c4d7559SDave Watson } 10653c4d7559SDave Watson 106633bfe20dSJohn Fastabend static void tls_update(struct sock *sk, struct proto *p, 106733bfe20dSJohn Fastabend void (*write_space)(struct sock *sk)) 106895fa1454SJohn Fastabend { 106995fa1454SJohn Fastabend struct tls_context *ctx; 107095fa1454SJohn Fastabend 1071e34a07c0SJakub Kicinski WARN_ON_ONCE(sk->sk_prot == p); 1072e34a07c0SJakub Kicinski 107395fa1454SJohn Fastabend ctx = tls_get_ctx(sk); 107433bfe20dSJohn Fastabend if (likely(ctx)) { 107533bfe20dSJohn Fastabend ctx->sk_write_space = write_space; 107695fa1454SJohn Fastabend ctx->sk_proto = p; 107733bfe20dSJohn Fastabend } else { 1078b8e202d1SJakub Sitnicki /* Pairs with lockless read in sk_clone_lock(). */ 1079b8e202d1SJakub Sitnicki WRITE_ONCE(sk->sk_prot, p); 108033bfe20dSJohn Fastabend sk->sk_write_space = write_space; 108133bfe20dSJohn Fastabend } 108295fa1454SJohn Fastabend } 108395fa1454SJohn Fastabend 108458790314SJakub Kicinski static u16 tls_user_config(struct tls_context *ctx, bool tx) 108558790314SJakub Kicinski { 108658790314SJakub Kicinski u16 config = tx ? ctx->tx_conf : ctx->rx_conf; 108758790314SJakub Kicinski 108858790314SJakub Kicinski switch (config) { 108958790314SJakub Kicinski case TLS_BASE: 109058790314SJakub Kicinski return TLS_CONF_BASE; 109158790314SJakub Kicinski case TLS_SW: 109258790314SJakub Kicinski return TLS_CONF_SW; 109358790314SJakub Kicinski case TLS_HW: 109458790314SJakub Kicinski return TLS_CONF_HW; 109558790314SJakub Kicinski case TLS_HW_RECORD: 109658790314SJakub Kicinski return TLS_CONF_HW_RECORD; 109758790314SJakub Kicinski } 109858790314SJakub Kicinski return 0; 109958790314SJakub Kicinski } 110058790314SJakub Kicinski 110126811cc9SDavide Caratti static int tls_get_info(const struct sock *sk, struct sk_buff *skb) 110226811cc9SDavide Caratti { 110326811cc9SDavide Caratti u16 version, cipher_type; 110426811cc9SDavide Caratti struct tls_context *ctx; 110526811cc9SDavide Caratti struct nlattr *start; 110626811cc9SDavide Caratti int err; 110726811cc9SDavide Caratti 110826811cc9SDavide Caratti start = nla_nest_start_noflag(skb, INET_ULP_INFO_TLS); 110926811cc9SDavide Caratti if (!start) 111026811cc9SDavide Caratti return -EMSGSIZE; 111126811cc9SDavide Caratti 111226811cc9SDavide Caratti rcu_read_lock(); 111326811cc9SDavide Caratti ctx = rcu_dereference(inet_csk(sk)->icsk_ulp_data); 111426811cc9SDavide Caratti if (!ctx) { 111526811cc9SDavide Caratti err = 0; 111626811cc9SDavide Caratti goto nla_failure; 111726811cc9SDavide Caratti } 111826811cc9SDavide Caratti version = ctx->prot_info.version; 111926811cc9SDavide Caratti if (version) { 112026811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_VERSION, version); 112126811cc9SDavide Caratti if (err) 112226811cc9SDavide Caratti goto nla_failure; 112326811cc9SDavide Caratti } 112426811cc9SDavide Caratti cipher_type = ctx->prot_info.cipher_type; 112526811cc9SDavide Caratti if (cipher_type) { 112626811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_CIPHER, cipher_type); 112726811cc9SDavide Caratti if (err) 112826811cc9SDavide Caratti goto nla_failure; 112926811cc9SDavide Caratti } 113026811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_TXCONF, tls_user_config(ctx, true)); 113126811cc9SDavide Caratti if (err) 113226811cc9SDavide Caratti goto nla_failure; 113326811cc9SDavide Caratti 113426811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_RXCONF, tls_user_config(ctx, false)); 113526811cc9SDavide Caratti if (err) 113626811cc9SDavide Caratti goto nla_failure; 113726811cc9SDavide Caratti 1138c1318b39SBoris Pismenny if (ctx->tx_conf == TLS_HW && ctx->zerocopy_sendfile) { 1139b489a6e5SMaxim Mikityanskiy err = nla_put_flag(skb, TLS_INFO_ZC_RO_TX); 1140c1318b39SBoris Pismenny if (err) 1141c1318b39SBoris Pismenny goto nla_failure; 1142c1318b39SBoris Pismenny } 114388527790SJakub Kicinski if (ctx->rx_no_pad) { 114488527790SJakub Kicinski err = nla_put_flag(skb, TLS_INFO_RX_NO_PAD); 114588527790SJakub Kicinski if (err) 114688527790SJakub Kicinski goto nla_failure; 114788527790SJakub Kicinski } 1148c1318b39SBoris Pismenny 114926811cc9SDavide Caratti rcu_read_unlock(); 115026811cc9SDavide Caratti nla_nest_end(skb, start); 115126811cc9SDavide Caratti return 0; 115226811cc9SDavide Caratti 115326811cc9SDavide Caratti nla_failure: 115426811cc9SDavide Caratti rcu_read_unlock(); 115526811cc9SDavide Caratti nla_nest_cancel(skb, start); 115626811cc9SDavide Caratti return err; 115726811cc9SDavide Caratti } 115826811cc9SDavide Caratti 115926811cc9SDavide Caratti static size_t tls_get_info_size(const struct sock *sk) 116026811cc9SDavide Caratti { 116126811cc9SDavide Caratti size_t size = 0; 116226811cc9SDavide Caratti 116326811cc9SDavide Caratti size += nla_total_size(0) + /* INET_ULP_INFO_TLS */ 116426811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_VERSION */ 116526811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_CIPHER */ 116626811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_RXCONF */ 116726811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_TXCONF */ 1168b489a6e5SMaxim Mikityanskiy nla_total_size(0) + /* TLS_INFO_ZC_RO_TX */ 116988527790SJakub Kicinski nla_total_size(0) + /* TLS_INFO_RX_NO_PAD */ 117026811cc9SDavide Caratti 0; 117126811cc9SDavide Caratti 117226811cc9SDavide Caratti return size; 117326811cc9SDavide Caratti } 117426811cc9SDavide Caratti 1175d26b698dSJakub Kicinski static int __net_init tls_init_net(struct net *net) 1176d26b698dSJakub Kicinski { 1177d26b698dSJakub Kicinski int err; 1178d26b698dSJakub Kicinski 1179d26b698dSJakub Kicinski net->mib.tls_statistics = alloc_percpu(struct linux_tls_mib); 1180d26b698dSJakub Kicinski if (!net->mib.tls_statistics) 1181d26b698dSJakub Kicinski return -ENOMEM; 1182d26b698dSJakub Kicinski 1183d26b698dSJakub Kicinski err = tls_proc_init(net); 1184d26b698dSJakub Kicinski if (err) 1185d26b698dSJakub Kicinski goto err_free_stats; 1186d26b698dSJakub Kicinski 1187d26b698dSJakub Kicinski return 0; 1188d26b698dSJakub Kicinski err_free_stats: 1189d26b698dSJakub Kicinski free_percpu(net->mib.tls_statistics); 1190d26b698dSJakub Kicinski return err; 1191d26b698dSJakub Kicinski } 1192d26b698dSJakub Kicinski 1193d26b698dSJakub Kicinski static void __net_exit tls_exit_net(struct net *net) 1194d26b698dSJakub Kicinski { 1195d26b698dSJakub Kicinski tls_proc_fini(net); 1196d26b698dSJakub Kicinski free_percpu(net->mib.tls_statistics); 1197d26b698dSJakub Kicinski } 1198d26b698dSJakub Kicinski 1199d26b698dSJakub Kicinski static struct pernet_operations tls_proc_ops = { 1200d26b698dSJakub Kicinski .init = tls_init_net, 1201d26b698dSJakub Kicinski .exit = tls_exit_net, 1202d26b698dSJakub Kicinski }; 1203d26b698dSJakub Kicinski 12043c4d7559SDave Watson static struct tcp_ulp_ops tcp_tls_ulp_ops __read_mostly = { 12053c4d7559SDave Watson .name = "tls", 12063c4d7559SDave Watson .owner = THIS_MODULE, 12073c4d7559SDave Watson .init = tls_init, 120895fa1454SJohn Fastabend .update = tls_update, 120926811cc9SDavide Caratti .get_info = tls_get_info, 121026811cc9SDavide Caratti .get_info_size = tls_get_info_size, 12113c4d7559SDave Watson }; 12123c4d7559SDave Watson 12133c4d7559SDave Watson static int __init tls_register(void) 12143c4d7559SDave Watson { 1215d26b698dSJakub Kicinski int err; 1216d26b698dSJakub Kicinski 1217d26b698dSJakub Kicinski err = register_pernet_subsys(&tls_proc_ops); 1218d26b698dSJakub Kicinski if (err) 1219d26b698dSJakub Kicinski return err; 1220d26b698dSJakub Kicinski 122184c61fe1SJakub Kicinski err = tls_strp_dev_init(); 122284c61fe1SJakub Kicinski if (err) 122384c61fe1SJakub Kicinski goto err_pernet; 122484c61fe1SJakub Kicinski 12253d8c51b2STariq Toukan err = tls_device_init(); 122684c61fe1SJakub Kicinski if (err) 122784c61fe1SJakub Kicinski goto err_strp; 12283d8c51b2STariq Toukan 12293c4d7559SDave Watson tcp_register_ulp(&tcp_tls_ulp_ops); 12303c4d7559SDave Watson 12313c4d7559SDave Watson return 0; 123284c61fe1SJakub Kicinski err_strp: 123384c61fe1SJakub Kicinski tls_strp_dev_exit(); 123484c61fe1SJakub Kicinski err_pernet: 123584c61fe1SJakub Kicinski unregister_pernet_subsys(&tls_proc_ops); 123684c61fe1SJakub Kicinski return err; 12373c4d7559SDave Watson } 12383c4d7559SDave Watson 12393c4d7559SDave Watson static void __exit tls_unregister(void) 12403c4d7559SDave Watson { 12413c4d7559SDave Watson tcp_unregister_ulp(&tcp_tls_ulp_ops); 124284c61fe1SJakub Kicinski tls_strp_dev_exit(); 1243e8f69799SIlya Lesokhin tls_device_cleanup(); 1244d26b698dSJakub Kicinski unregister_pernet_subsys(&tls_proc_ops); 12453c4d7559SDave Watson } 12463c4d7559SDave Watson 12473c4d7559SDave Watson module_init(tls_register); 12483c4d7559SDave Watson module_exit(tls_unregister); 1249