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 61*176a3f50SSabrina Dubroca #define __CIPHER_DESC(ci) \ 62*176a3f50SSabrina Dubroca .iv_offset = offsetof(struct ci, iv), \ 63*176a3f50SSabrina Dubroca .key_offset = offsetof(struct ci, key), \ 64*176a3f50SSabrina Dubroca .salt_offset = offsetof(struct ci, salt), \ 65*176a3f50SSabrina Dubroca .rec_seq_offset = offsetof(struct ci, rec_seq), \ 66*176a3f50SSabrina Dubroca .crypto_info = sizeof(struct ci) 67*176a3f50SSabrina Dubroca 68*176a3f50SSabrina Dubroca #define CIPHER_DESC(cipher,ci,algname,_offloadable) [cipher - TLS_CIPHER_MIN] = { \ 69*176a3f50SSabrina Dubroca .nonce = cipher ## _IV_SIZE, \ 702d2c5ea2STariq Toukan .iv = cipher ## _IV_SIZE, \ 712d2c5ea2STariq Toukan .key = cipher ## _KEY_SIZE, \ 722d2c5ea2STariq Toukan .salt = cipher ## _SALT_SIZE, \ 732d2c5ea2STariq Toukan .tag = cipher ## _TAG_SIZE, \ 742d2c5ea2STariq Toukan .rec_seq = cipher ## _REC_SEQ_SIZE, \ 75*176a3f50SSabrina Dubroca .cipher_name = algname, \ 76*176a3f50SSabrina Dubroca .offloadable = _offloadable, \ 77*176a3f50SSabrina Dubroca __CIPHER_DESC(ci), \ 78*176a3f50SSabrina Dubroca } 79*176a3f50SSabrina Dubroca 80*176a3f50SSabrina Dubroca #define CIPHER_DESC_NONCE0(cipher,ci,algname,_offloadable) [cipher - TLS_CIPHER_MIN] = { \ 81*176a3f50SSabrina Dubroca .nonce = 0, \ 82*176a3f50SSabrina Dubroca .iv = cipher ## _IV_SIZE, \ 83*176a3f50SSabrina Dubroca .key = cipher ## _KEY_SIZE, \ 84*176a3f50SSabrina Dubroca .salt = cipher ## _SALT_SIZE, \ 85*176a3f50SSabrina Dubroca .tag = cipher ## _TAG_SIZE, \ 86*176a3f50SSabrina Dubroca .rec_seq = cipher ## _REC_SEQ_SIZE, \ 87*176a3f50SSabrina Dubroca .cipher_name = algname, \ 88*176a3f50SSabrina Dubroca .offloadable = _offloadable, \ 89*176a3f50SSabrina Dubroca __CIPHER_DESC(ci), \ 902d2c5ea2STariq Toukan } 912d2c5ea2STariq Toukan 928db44ab2SSabrina Dubroca const struct tls_cipher_desc tls_cipher_desc[TLS_CIPHER_MAX + 1 - TLS_CIPHER_MIN] = { 93*176a3f50SSabrina Dubroca CIPHER_DESC(TLS_CIPHER_AES_GCM_128, tls12_crypto_info_aes_gcm_128, "gcm(aes)", true), 94*176a3f50SSabrina Dubroca CIPHER_DESC(TLS_CIPHER_AES_GCM_256, tls12_crypto_info_aes_gcm_256, "gcm(aes)", true), 95*176a3f50SSabrina Dubroca CIPHER_DESC(TLS_CIPHER_AES_CCM_128, tls12_crypto_info_aes_ccm_128, "ccm(aes)", false), 96*176a3f50SSabrina Dubroca CIPHER_DESC_NONCE0(TLS_CIPHER_CHACHA20_POLY1305, tls12_crypto_info_chacha20_poly1305, "rfc7539(chacha20,poly1305)", false), 97*176a3f50SSabrina Dubroca CIPHER_DESC(TLS_CIPHER_SM4_GCM, tls12_crypto_info_sm4_gcm, "gcm(sm4)", false), 98*176a3f50SSabrina Dubroca CIPHER_DESC(TLS_CIPHER_SM4_CCM, tls12_crypto_info_sm4_ccm, "ccm(sm4)", false), 99*176a3f50SSabrina Dubroca CIPHER_DESC(TLS_CIPHER_ARIA_GCM_128, tls12_crypto_info_aria_gcm_128, "gcm(aria)", false), 100*176a3f50SSabrina Dubroca CIPHER_DESC(TLS_CIPHER_ARIA_GCM_256, tls12_crypto_info_aria_gcm_256, "gcm(aria)", false), 1012d2c5ea2STariq Toukan }; 1022d2c5ea2STariq Toukan 103f691a25cSArnd Bergmann static const struct proto *saved_tcpv6_prot; 104c113187dSBoris Pismenny static DEFINE_MUTEX(tcpv6_prot_mutex); 105f691a25cSArnd Bergmann static const struct proto *saved_tcpv4_prot; 10628cb6f1eSJohn Fastabend static DEFINE_MUTEX(tcpv4_prot_mutex); 107f66de3eeSBoris Pismenny static struct proto tls_prots[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG]; 108f3911f73SJakub Kicinski static struct proto_ops tls_proto_ops[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG]; 10963a6b3feSAtul Gupta static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 110f13fe3e6SJakub Sitnicki const struct proto *base); 1116d88207fSIlya Lesokhin 11208700dabSJakub Kicinski void update_sk_prot(struct sock *sk, struct tls_context *ctx) 1136d88207fSIlya Lesokhin { 114c113187dSBoris Pismenny int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 115c113187dSBoris Pismenny 116d5bee737SJakub Sitnicki WRITE_ONCE(sk->sk_prot, 117d5bee737SJakub Sitnicki &tls_prots[ip_ver][ctx->tx_conf][ctx->rx_conf]); 118f3911f73SJakub Kicinski WRITE_ONCE(sk->sk_socket->ops, 119f3911f73SJakub Kicinski &tls_proto_ops[ip_ver][ctx->tx_conf][ctx->rx_conf]); 1206d88207fSIlya Lesokhin } 1213c4d7559SDave Watson 1223c4d7559SDave Watson int wait_on_pending_writer(struct sock *sk, long *timeo) 1233c4d7559SDave Watson { 1243c4d7559SDave Watson int rc = 0; 1253c4d7559SDave Watson DEFINE_WAIT_FUNC(wait, woken_wake_function); 1263c4d7559SDave Watson 1273c4d7559SDave Watson add_wait_queue(sk_sleep(sk), &wait); 1283c4d7559SDave Watson while (1) { 1293c4d7559SDave Watson if (!*timeo) { 1303c4d7559SDave Watson rc = -EAGAIN; 1313c4d7559SDave Watson break; 1323c4d7559SDave Watson } 1333c4d7559SDave Watson 1343c4d7559SDave Watson if (signal_pending(current)) { 1353c4d7559SDave Watson rc = sock_intr_errno(*timeo); 1363c4d7559SDave Watson break; 1373c4d7559SDave Watson } 1383c4d7559SDave Watson 139d0ac89f6SEric Dumazet if (sk_wait_event(sk, timeo, 140d0ac89f6SEric Dumazet !READ_ONCE(sk->sk_write_pending), &wait)) 1413c4d7559SDave Watson break; 1423c4d7559SDave Watson } 1433c4d7559SDave Watson remove_wait_queue(sk_sleep(sk), &wait); 1443c4d7559SDave Watson return rc; 1453c4d7559SDave Watson } 1463c4d7559SDave Watson 1473c4d7559SDave Watson int tls_push_sg(struct sock *sk, 1483c4d7559SDave Watson struct tls_context *ctx, 1493c4d7559SDave Watson struct scatterlist *sg, 1503c4d7559SDave Watson u16 first_offset, 1513c4d7559SDave Watson int flags) 1523c4d7559SDave Watson { 153e117dcfdSDavid Howells struct bio_vec bvec; 154e117dcfdSDavid Howells struct msghdr msg = { 155b848b26cSDavid Howells .msg_flags = MSG_SPLICE_PAGES | flags, 156e117dcfdSDavid Howells }; 1573c4d7559SDave Watson int ret = 0; 1583c4d7559SDave Watson struct page *p; 1593c4d7559SDave Watson size_t size; 1603c4d7559SDave Watson int offset = first_offset; 1613c4d7559SDave Watson 1623c4d7559SDave Watson size = sg->length - offset; 1633c4d7559SDave Watson offset += sg->offset; 1643c4d7559SDave Watson 165e117dcfdSDavid Howells ctx->splicing_pages = true; 1663c4d7559SDave Watson while (1) { 1673c4d7559SDave Watson /* is sending application-limited? */ 1683c4d7559SDave Watson tcp_rate_check_app_limited(sk); 1693c4d7559SDave Watson p = sg_page(sg); 1703c4d7559SDave Watson retry: 171e117dcfdSDavid Howells bvec_set_page(&bvec, p, size, offset); 172e117dcfdSDavid Howells iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size); 173e117dcfdSDavid Howells 174e117dcfdSDavid Howells ret = tcp_sendmsg_locked(sk, &msg, size); 1753c4d7559SDave Watson 1763c4d7559SDave Watson if (ret != size) { 1773c4d7559SDave Watson if (ret > 0) { 1783c4d7559SDave Watson offset += ret; 1793c4d7559SDave Watson size -= ret; 1803c4d7559SDave Watson goto retry; 1813c4d7559SDave Watson } 1823c4d7559SDave Watson 1833c4d7559SDave Watson offset -= sg->offset; 1843c4d7559SDave Watson ctx->partially_sent_offset = offset; 1853c4d7559SDave Watson ctx->partially_sent_record = (void *)sg; 186e117dcfdSDavid Howells ctx->splicing_pages = false; 1873c4d7559SDave Watson return ret; 1883c4d7559SDave Watson } 1893c4d7559SDave Watson 1903c4d7559SDave Watson put_page(p); 1913c4d7559SDave Watson sk_mem_uncharge(sk, sg->length); 1923c4d7559SDave Watson sg = sg_next(sg); 1933c4d7559SDave Watson if (!sg) 1943c4d7559SDave Watson break; 1953c4d7559SDave Watson 1963c4d7559SDave Watson offset = sg->offset; 1973c4d7559SDave Watson size = sg->length; 1983c4d7559SDave Watson } 1993c4d7559SDave Watson 200e117dcfdSDavid Howells ctx->splicing_pages = false; 2013c4d7559SDave Watson 2023c4d7559SDave Watson return 0; 2033c4d7559SDave Watson } 2043c4d7559SDave Watson 2053c4d7559SDave Watson static int tls_handle_open_record(struct sock *sk, int flags) 2063c4d7559SDave Watson { 2073c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 2083c4d7559SDave Watson 2093c4d7559SDave Watson if (tls_is_pending_open_record(ctx)) 2103c4d7559SDave Watson return ctx->push_pending_record(sk, flags); 2113c4d7559SDave Watson 2123c4d7559SDave Watson return 0; 2133c4d7559SDave Watson } 2143c4d7559SDave Watson 21558790314SJakub Kicinski int tls_process_cmsg(struct sock *sk, struct msghdr *msg, 2163c4d7559SDave Watson unsigned char *record_type) 2173c4d7559SDave Watson { 2183c4d7559SDave Watson struct cmsghdr *cmsg; 2193c4d7559SDave Watson int rc = -EINVAL; 2203c4d7559SDave Watson 2213c4d7559SDave Watson for_each_cmsghdr(cmsg, msg) { 2223c4d7559SDave Watson if (!CMSG_OK(msg, cmsg)) 2233c4d7559SDave Watson return -EINVAL; 2243c4d7559SDave Watson if (cmsg->cmsg_level != SOL_TLS) 2253c4d7559SDave Watson continue; 2263c4d7559SDave Watson 2273c4d7559SDave Watson switch (cmsg->cmsg_type) { 2283c4d7559SDave Watson case TLS_SET_RECORD_TYPE: 2293c4d7559SDave Watson if (cmsg->cmsg_len < CMSG_LEN(sizeof(*record_type))) 2303c4d7559SDave Watson return -EINVAL; 2313c4d7559SDave Watson 2323c4d7559SDave Watson if (msg->msg_flags & MSG_MORE) 2333c4d7559SDave Watson return -EINVAL; 2343c4d7559SDave Watson 2353c4d7559SDave Watson rc = tls_handle_open_record(sk, msg->msg_flags); 2363c4d7559SDave Watson if (rc) 2373c4d7559SDave Watson return rc; 2383c4d7559SDave Watson 2393c4d7559SDave Watson *record_type = *(unsigned char *)CMSG_DATA(cmsg); 2403c4d7559SDave Watson rc = 0; 2413c4d7559SDave Watson break; 2423c4d7559SDave Watson default: 2433c4d7559SDave Watson return -EINVAL; 2443c4d7559SDave Watson } 2453c4d7559SDave Watson } 2463c4d7559SDave Watson 2473c4d7559SDave Watson return rc; 2483c4d7559SDave Watson } 2493c4d7559SDave Watson 250a42055e8SVakul Garg int tls_push_partial_record(struct sock *sk, struct tls_context *ctx, 251a42055e8SVakul Garg int flags) 2523c4d7559SDave Watson { 2533c4d7559SDave Watson struct scatterlist *sg; 2543c4d7559SDave Watson u16 offset; 2553c4d7559SDave Watson 2563c4d7559SDave Watson sg = ctx->partially_sent_record; 2573c4d7559SDave Watson offset = ctx->partially_sent_offset; 2583c4d7559SDave Watson 2593c4d7559SDave Watson ctx->partially_sent_record = NULL; 2603c4d7559SDave Watson return tls_push_sg(sk, ctx, sg, offset, flags); 2613c4d7559SDave Watson } 2623c4d7559SDave Watson 263c5daa6ccSJakub Kicinski void tls_free_partial_record(struct sock *sk, struct tls_context *ctx) 26435b71a34SJakub Kicinski { 26535b71a34SJakub Kicinski struct scatterlist *sg; 26635b71a34SJakub Kicinski 267c5daa6ccSJakub Kicinski for (sg = ctx->partially_sent_record; sg; sg = sg_next(sg)) { 26835b71a34SJakub Kicinski put_page(sg_page(sg)); 26935b71a34SJakub Kicinski sk_mem_uncharge(sk, sg->length); 27035b71a34SJakub Kicinski } 27135b71a34SJakub Kicinski ctx->partially_sent_record = NULL; 27235b71a34SJakub Kicinski } 27335b71a34SJakub Kicinski 2743c4d7559SDave Watson static void tls_write_space(struct sock *sk) 2753c4d7559SDave Watson { 2763c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 2773c4d7559SDave Watson 278e117dcfdSDavid Howells /* If splicing_pages call lower protocol write space handler 27967db7cd2SJohn Fastabend * to ensure we wake up any waiting operations there. For example 280e117dcfdSDavid Howells * if splicing pages where to call sk_wait_event. 28167db7cd2SJohn Fastabend */ 282e117dcfdSDavid Howells if (ctx->splicing_pages) { 28367db7cd2SJohn Fastabend ctx->sk_write_space(sk); 284c212d2c7SDave Watson return; 28567db7cd2SJohn Fastabend } 286c212d2c7SDave Watson 2877463d3a2SBoris Pismenny #ifdef CONFIG_TLS_DEVICE 2887463d3a2SBoris Pismenny if (ctx->tx_conf == TLS_HW) 2897463d3a2SBoris Pismenny tls_device_write_space(sk, ctx); 2907463d3a2SBoris Pismenny else 2917463d3a2SBoris Pismenny #endif 2927463d3a2SBoris Pismenny tls_sw_write_space(sk, ctx); 2934504ab0eSVakul Garg 2944504ab0eSVakul Garg ctx->sk_write_space(sk); 2953c4d7559SDave Watson } 2963c4d7559SDave Watson 29715a7dea7SJakub Kicinski /** 29815a7dea7SJakub Kicinski * tls_ctx_free() - free TLS ULP context 29915a7dea7SJakub Kicinski * @sk: socket to with @ctx is attached 30015a7dea7SJakub Kicinski * @ctx: TLS context structure 30115a7dea7SJakub Kicinski * 30215a7dea7SJakub Kicinski * Free TLS context. If @sk is %NULL caller guarantees that the socket 30315a7dea7SJakub Kicinski * to which @ctx was attached has no outstanding references. 30415a7dea7SJakub Kicinski */ 30515a7dea7SJakub Kicinski void tls_ctx_free(struct sock *sk, struct tls_context *ctx) 30686029d10SSabrina Dubroca { 30786029d10SSabrina Dubroca if (!ctx) 30886029d10SSabrina Dubroca return; 30986029d10SSabrina Dubroca 31086029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_send, sizeof(ctx->crypto_send)); 31186029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_recv, sizeof(ctx->crypto_recv)); 31279ffe608SJakub Kicinski mutex_destroy(&ctx->tx_lock); 31315a7dea7SJakub Kicinski 31415a7dea7SJakub Kicinski if (sk) 31515a7dea7SJakub Kicinski kfree_rcu(ctx, rcu); 31615a7dea7SJakub Kicinski else 31786029d10SSabrina Dubroca kfree(ctx); 31886029d10SSabrina Dubroca } 31986029d10SSabrina Dubroca 320313ab004SJohn Fastabend static void tls_sk_proto_cleanup(struct sock *sk, 321313ab004SJohn Fastabend struct tls_context *ctx, long timeo) 3223c4d7559SDave Watson { 3239354544cSDirk van der Merwe if (unlikely(sk->sk_write_pending) && 3249354544cSDirk van der Merwe !wait_on_pending_writer(sk, &timeo)) 3253c4d7559SDave Watson tls_handle_open_record(sk, 0); 3263c4d7559SDave Watson 327f66de3eeSBoris Pismenny /* We need these for tls_sw_fallback handling of other packets */ 328f66de3eeSBoris Pismenny if (ctx->tx_conf == TLS_SW) { 329dbe42559SDave Watson kfree(ctx->tx.rec_seq); 330dbe42559SDave Watson kfree(ctx->tx.iv); 331313ab004SJohn Fastabend tls_sw_release_resources_tx(sk); 332b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXSW); 33335b71a34SJakub Kicinski } else if (ctx->tx_conf == TLS_HW) { 33435b71a34SJakub Kicinski tls_device_free_resources_tx(sk); 335b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXDEVICE); 336f66de3eeSBoris Pismenny } 337f66de3eeSBoris Pismenny 338b32fd3ccSJakub Kicinski if (ctx->rx_conf == TLS_SW) { 339313ab004SJohn Fastabend tls_sw_release_resources_rx(sk); 340b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXSW); 341b32fd3ccSJakub Kicinski } else if (ctx->rx_conf == TLS_HW) { 3424799ac81SBoris Pismenny tls_device_offload_cleanup_rx(sk); 343b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXDEVICE); 344b32fd3ccSJakub Kicinski } 345e8f69799SIlya Lesokhin } 346e8f69799SIlya Lesokhin 347313ab004SJohn Fastabend static void tls_sk_proto_close(struct sock *sk, long timeout) 348313ab004SJohn Fastabend { 34995fa1454SJohn Fastabend struct inet_connection_sock *icsk = inet_csk(sk); 350313ab004SJohn Fastabend struct tls_context *ctx = tls_get_ctx(sk); 351313ab004SJohn Fastabend long timeo = sock_sndtimeo(sk, 0); 352313ab004SJohn Fastabend bool free_ctx; 353313ab004SJohn Fastabend 354313ab004SJohn Fastabend if (ctx->tx_conf == TLS_SW) 355313ab004SJohn Fastabend tls_sw_cancel_work_tx(ctx); 356313ab004SJohn Fastabend 357313ab004SJohn Fastabend lock_sock(sk); 358313ab004SJohn Fastabend free_ctx = ctx->tx_conf != TLS_HW && ctx->rx_conf != TLS_HW; 359313ab004SJohn Fastabend 360313ab004SJohn Fastabend if (ctx->tx_conf != TLS_BASE || ctx->rx_conf != TLS_BASE) 361313ab004SJohn Fastabend tls_sk_proto_cleanup(sk, ctx, timeo); 362313ab004SJohn Fastabend 36395fa1454SJohn Fastabend write_lock_bh(&sk->sk_callback_lock); 36495fa1454SJohn Fastabend if (free_ctx) 36515a7dea7SJakub Kicinski rcu_assign_pointer(icsk->icsk_ulp_data, NULL); 366d5bee737SJakub Sitnicki WRITE_ONCE(sk->sk_prot, ctx->sk_proto); 367d85f0177SJohn Fastabend if (sk->sk_write_space == tls_write_space) 36857c722e9SJakub Kicinski sk->sk_write_space = ctx->sk_write_space; 36995fa1454SJohn Fastabend write_unlock_bh(&sk->sk_callback_lock); 3703c4d7559SDave Watson release_sock(sk); 371313ab004SJohn Fastabend if (ctx->tx_conf == TLS_SW) 372313ab004SJohn Fastabend tls_sw_free_ctx_tx(ctx); 373313ab004SJohn Fastabend if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) 374313ab004SJohn Fastabend tls_sw_strparser_done(ctx); 375313ab004SJohn Fastabend if (ctx->rx_conf == TLS_SW) 376313ab004SJohn Fastabend tls_sw_free_ctx_rx(ctx); 377be7bbea1SJakub Kicinski ctx->sk_proto->close(sk, timeout); 378313ab004SJohn Fastabend 37998f0a395SEric Dumazet if (free_ctx) 38015a7dea7SJakub Kicinski tls_ctx_free(sk, ctx); 3813c4d7559SDave Watson } 3823c4d7559SDave Watson 383121dca78SJakub Kicinski static __poll_t tls_sk_poll(struct file *file, struct socket *sock, 384121dca78SJakub Kicinski struct poll_table_struct *wait) 385121dca78SJakub Kicinski { 386121dca78SJakub Kicinski struct tls_sw_context_rx *ctx; 387121dca78SJakub Kicinski struct tls_context *tls_ctx; 388121dca78SJakub Kicinski struct sock *sk = sock->sk; 389121dca78SJakub Kicinski struct sk_psock *psock; 390121dca78SJakub Kicinski __poll_t mask = 0; 391121dca78SJakub Kicinski u8 shutdown; 392121dca78SJakub Kicinski int state; 393121dca78SJakub Kicinski 394121dca78SJakub Kicinski mask = tcp_poll(file, sock, wait); 395121dca78SJakub Kicinski 396121dca78SJakub Kicinski state = inet_sk_state_load(sk); 397121dca78SJakub Kicinski shutdown = READ_ONCE(sk->sk_shutdown); 398121dca78SJakub Kicinski if (unlikely(state != TCP_ESTABLISHED || shutdown & RCV_SHUTDOWN)) 399121dca78SJakub Kicinski return mask; 400121dca78SJakub Kicinski 401121dca78SJakub Kicinski tls_ctx = tls_get_ctx(sk); 402121dca78SJakub Kicinski ctx = tls_sw_ctx_rx(tls_ctx); 403121dca78SJakub Kicinski psock = sk_psock_get(sk); 404121dca78SJakub Kicinski 405121dca78SJakub Kicinski if (skb_queue_empty_lockless(&ctx->rx_list) && 406121dca78SJakub Kicinski !tls_strp_msg_ready(ctx) && 407121dca78SJakub Kicinski sk_psock_queue_empty(psock)) 408121dca78SJakub Kicinski mask &= ~(EPOLLIN | EPOLLRDNORM); 409121dca78SJakub Kicinski 410121dca78SJakub Kicinski if (psock) 411121dca78SJakub Kicinski sk_psock_put(sk, psock); 412121dca78SJakub Kicinski 413121dca78SJakub Kicinski return mask; 414121dca78SJakub Kicinski } 415121dca78SJakub Kicinski 416ffa81fa4SYutaro Hayakawa static int do_tls_getsockopt_conf(struct sock *sk, char __user *optval, 417ffa81fa4SYutaro Hayakawa int __user *optlen, int tx) 4183c4d7559SDave Watson { 4193c4d7559SDave Watson int rc = 0; 4203c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 4213c4d7559SDave Watson struct tls_crypto_info *crypto_info; 422ffa81fa4SYutaro Hayakawa struct cipher_context *cctx; 4233c4d7559SDave Watson int len; 4243c4d7559SDave Watson 4253c4d7559SDave Watson if (get_user(len, optlen)) 4263c4d7559SDave Watson return -EFAULT; 4273c4d7559SDave Watson 4283c4d7559SDave Watson if (!optval || (len < sizeof(*crypto_info))) { 4293c4d7559SDave Watson rc = -EINVAL; 4303c4d7559SDave Watson goto out; 4313c4d7559SDave Watson } 4323c4d7559SDave Watson 4333c4d7559SDave Watson if (!ctx) { 4343c4d7559SDave Watson rc = -EBUSY; 4353c4d7559SDave Watson goto out; 4363c4d7559SDave Watson } 4373c4d7559SDave Watson 4383c4d7559SDave Watson /* get user crypto info */ 439ffa81fa4SYutaro Hayakawa if (tx) { 44086029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 441ffa81fa4SYutaro Hayakawa cctx = &ctx->tx; 442ffa81fa4SYutaro Hayakawa } else { 443ffa81fa4SYutaro Hayakawa crypto_info = &ctx->crypto_recv.info; 444ffa81fa4SYutaro Hayakawa cctx = &ctx->rx; 445ffa81fa4SYutaro Hayakawa } 4463c4d7559SDave Watson 4473c4d7559SDave Watson if (!TLS_CRYPTO_INFO_READY(crypto_info)) { 4483c4d7559SDave Watson rc = -EBUSY; 4493c4d7559SDave Watson goto out; 4503c4d7559SDave Watson } 4513c4d7559SDave Watson 4525a3b886cSMatthias Rosenfelder if (len == sizeof(*crypto_info)) { 453ac55cd61SDan Carpenter if (copy_to_user(optval, crypto_info, sizeof(*crypto_info))) 454ac55cd61SDan Carpenter rc = -EFAULT; 4553c4d7559SDave Watson goto out; 4563c4d7559SDave Watson } 4573c4d7559SDave Watson 4583c4d7559SDave Watson switch (crypto_info->cipher_type) { 4593c4d7559SDave Watson case TLS_CIPHER_AES_GCM_128: { 4603c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128 * 4613c4d7559SDave Watson crypto_info_aes_gcm_128 = 4623c4d7559SDave Watson container_of(crypto_info, 4633c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128, 4643c4d7559SDave Watson info); 4653c4d7559SDave Watson 4663c4d7559SDave Watson if (len != sizeof(*crypto_info_aes_gcm_128)) { 4673c4d7559SDave Watson rc = -EINVAL; 4683c4d7559SDave Watson goto out; 4693c4d7559SDave Watson } 470a1dfa681SBoris Pismenny memcpy(crypto_info_aes_gcm_128->iv, 471ffa81fa4SYutaro Hayakawa cctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, 4723c4d7559SDave Watson TLS_CIPHER_AES_GCM_128_IV_SIZE); 473ffa81fa4SYutaro Hayakawa memcpy(crypto_info_aes_gcm_128->rec_seq, cctx->rec_seq, 474c410c196SBoris Pismenny TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE); 475ac55cd61SDan Carpenter if (copy_to_user(optval, 4763c4d7559SDave Watson crypto_info_aes_gcm_128, 477ac55cd61SDan Carpenter sizeof(*crypto_info_aes_gcm_128))) 478ac55cd61SDan Carpenter rc = -EFAULT; 4793c4d7559SDave Watson break; 4803c4d7559SDave Watson } 481fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_256: { 482fb99bce7SDave Watson struct tls12_crypto_info_aes_gcm_256 * 483fb99bce7SDave Watson crypto_info_aes_gcm_256 = 484fb99bce7SDave Watson container_of(crypto_info, 485fb99bce7SDave Watson struct tls12_crypto_info_aes_gcm_256, 486fb99bce7SDave Watson info); 487fb99bce7SDave Watson 488fb99bce7SDave Watson if (len != sizeof(*crypto_info_aes_gcm_256)) { 489fb99bce7SDave Watson rc = -EINVAL; 490fb99bce7SDave Watson goto out; 491fb99bce7SDave Watson } 492fb99bce7SDave Watson memcpy(crypto_info_aes_gcm_256->iv, 493ffa81fa4SYutaro Hayakawa cctx->iv + TLS_CIPHER_AES_GCM_256_SALT_SIZE, 494fb99bce7SDave Watson TLS_CIPHER_AES_GCM_256_IV_SIZE); 495ffa81fa4SYutaro Hayakawa memcpy(crypto_info_aes_gcm_256->rec_seq, cctx->rec_seq, 496fb99bce7SDave Watson TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE); 497fb99bce7SDave Watson if (copy_to_user(optval, 498fb99bce7SDave Watson crypto_info_aes_gcm_256, 499fb99bce7SDave Watson sizeof(*crypto_info_aes_gcm_256))) 500fb99bce7SDave Watson rc = -EFAULT; 501fb99bce7SDave Watson break; 502fb99bce7SDave Watson } 5033fb59a5dSTianjia Zhang case TLS_CIPHER_AES_CCM_128: { 5043fb59a5dSTianjia Zhang struct tls12_crypto_info_aes_ccm_128 *aes_ccm_128 = 5053fb59a5dSTianjia Zhang container_of(crypto_info, 5063fb59a5dSTianjia Zhang struct tls12_crypto_info_aes_ccm_128, info); 5073fb59a5dSTianjia Zhang 5083fb59a5dSTianjia Zhang if (len != sizeof(*aes_ccm_128)) { 5093fb59a5dSTianjia Zhang rc = -EINVAL; 5103fb59a5dSTianjia Zhang goto out; 5113fb59a5dSTianjia Zhang } 5123fb59a5dSTianjia Zhang memcpy(aes_ccm_128->iv, 5133fb59a5dSTianjia Zhang cctx->iv + TLS_CIPHER_AES_CCM_128_SALT_SIZE, 5143fb59a5dSTianjia Zhang TLS_CIPHER_AES_CCM_128_IV_SIZE); 5153fb59a5dSTianjia Zhang memcpy(aes_ccm_128->rec_seq, cctx->rec_seq, 5163fb59a5dSTianjia Zhang TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE); 5173fb59a5dSTianjia Zhang if (copy_to_user(optval, aes_ccm_128, sizeof(*aes_ccm_128))) 5183fb59a5dSTianjia Zhang rc = -EFAULT; 5193fb59a5dSTianjia Zhang break; 5203fb59a5dSTianjia Zhang } 5213fb59a5dSTianjia Zhang case TLS_CIPHER_CHACHA20_POLY1305: { 5223fb59a5dSTianjia Zhang struct tls12_crypto_info_chacha20_poly1305 *chacha20_poly1305 = 5233fb59a5dSTianjia Zhang container_of(crypto_info, 5243fb59a5dSTianjia Zhang struct tls12_crypto_info_chacha20_poly1305, 5253fb59a5dSTianjia Zhang info); 5263fb59a5dSTianjia Zhang 5273fb59a5dSTianjia Zhang if (len != sizeof(*chacha20_poly1305)) { 5283fb59a5dSTianjia Zhang rc = -EINVAL; 5293fb59a5dSTianjia Zhang goto out; 5303fb59a5dSTianjia Zhang } 5313fb59a5dSTianjia Zhang memcpy(chacha20_poly1305->iv, 5323fb59a5dSTianjia Zhang cctx->iv + TLS_CIPHER_CHACHA20_POLY1305_SALT_SIZE, 5333fb59a5dSTianjia Zhang TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE); 5343fb59a5dSTianjia Zhang memcpy(chacha20_poly1305->rec_seq, cctx->rec_seq, 5353fb59a5dSTianjia Zhang TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE); 5363fb59a5dSTianjia Zhang if (copy_to_user(optval, chacha20_poly1305, 5373fb59a5dSTianjia Zhang sizeof(*chacha20_poly1305))) 5383fb59a5dSTianjia Zhang rc = -EFAULT; 5393fb59a5dSTianjia Zhang break; 5403fb59a5dSTianjia Zhang } 541227b9644STianjia Zhang case TLS_CIPHER_SM4_GCM: { 542227b9644STianjia Zhang struct tls12_crypto_info_sm4_gcm *sm4_gcm_info = 543227b9644STianjia Zhang container_of(crypto_info, 544227b9644STianjia Zhang struct tls12_crypto_info_sm4_gcm, info); 545227b9644STianjia Zhang 546227b9644STianjia Zhang if (len != sizeof(*sm4_gcm_info)) { 547227b9644STianjia Zhang rc = -EINVAL; 548227b9644STianjia Zhang goto out; 549227b9644STianjia Zhang } 550227b9644STianjia Zhang memcpy(sm4_gcm_info->iv, 551227b9644STianjia Zhang cctx->iv + TLS_CIPHER_SM4_GCM_SALT_SIZE, 552227b9644STianjia Zhang TLS_CIPHER_SM4_GCM_IV_SIZE); 553227b9644STianjia Zhang memcpy(sm4_gcm_info->rec_seq, cctx->rec_seq, 554227b9644STianjia Zhang TLS_CIPHER_SM4_GCM_REC_SEQ_SIZE); 555227b9644STianjia Zhang if (copy_to_user(optval, sm4_gcm_info, sizeof(*sm4_gcm_info))) 556227b9644STianjia Zhang rc = -EFAULT; 557227b9644STianjia Zhang break; 558227b9644STianjia Zhang } 559227b9644STianjia Zhang case TLS_CIPHER_SM4_CCM: { 560227b9644STianjia Zhang struct tls12_crypto_info_sm4_ccm *sm4_ccm_info = 561227b9644STianjia Zhang container_of(crypto_info, 562227b9644STianjia Zhang struct tls12_crypto_info_sm4_ccm, info); 563227b9644STianjia Zhang 564227b9644STianjia Zhang if (len != sizeof(*sm4_ccm_info)) { 565227b9644STianjia Zhang rc = -EINVAL; 566227b9644STianjia Zhang goto out; 567227b9644STianjia Zhang } 568227b9644STianjia Zhang memcpy(sm4_ccm_info->iv, 569227b9644STianjia Zhang cctx->iv + TLS_CIPHER_SM4_CCM_SALT_SIZE, 570227b9644STianjia Zhang TLS_CIPHER_SM4_CCM_IV_SIZE); 571227b9644STianjia Zhang memcpy(sm4_ccm_info->rec_seq, cctx->rec_seq, 572227b9644STianjia Zhang TLS_CIPHER_SM4_CCM_REC_SEQ_SIZE); 573227b9644STianjia Zhang if (copy_to_user(optval, sm4_ccm_info, sizeof(*sm4_ccm_info))) 574227b9644STianjia Zhang rc = -EFAULT; 575227b9644STianjia Zhang break; 576227b9644STianjia Zhang } 57762e56ef5STaehee Yoo case TLS_CIPHER_ARIA_GCM_128: { 57862e56ef5STaehee Yoo struct tls12_crypto_info_aria_gcm_128 * 57962e56ef5STaehee Yoo crypto_info_aria_gcm_128 = 58062e56ef5STaehee Yoo container_of(crypto_info, 58162e56ef5STaehee Yoo struct tls12_crypto_info_aria_gcm_128, 58262e56ef5STaehee Yoo info); 58362e56ef5STaehee Yoo 58462e56ef5STaehee Yoo if (len != sizeof(*crypto_info_aria_gcm_128)) { 58562e56ef5STaehee Yoo rc = -EINVAL; 58662e56ef5STaehee Yoo goto out; 58762e56ef5STaehee Yoo } 58862e56ef5STaehee Yoo memcpy(crypto_info_aria_gcm_128->iv, 58962e56ef5STaehee Yoo cctx->iv + TLS_CIPHER_ARIA_GCM_128_SALT_SIZE, 59062e56ef5STaehee Yoo TLS_CIPHER_ARIA_GCM_128_IV_SIZE); 59162e56ef5STaehee Yoo memcpy(crypto_info_aria_gcm_128->rec_seq, cctx->rec_seq, 59262e56ef5STaehee Yoo TLS_CIPHER_ARIA_GCM_128_REC_SEQ_SIZE); 59362e56ef5STaehee Yoo if (copy_to_user(optval, 59462e56ef5STaehee Yoo crypto_info_aria_gcm_128, 59562e56ef5STaehee Yoo sizeof(*crypto_info_aria_gcm_128))) 59662e56ef5STaehee Yoo rc = -EFAULT; 59762e56ef5STaehee Yoo break; 59862e56ef5STaehee Yoo } 59962e56ef5STaehee Yoo case TLS_CIPHER_ARIA_GCM_256: { 60062e56ef5STaehee Yoo struct tls12_crypto_info_aria_gcm_256 * 60162e56ef5STaehee Yoo crypto_info_aria_gcm_256 = 60262e56ef5STaehee Yoo container_of(crypto_info, 60362e56ef5STaehee Yoo struct tls12_crypto_info_aria_gcm_256, 60462e56ef5STaehee Yoo info); 60562e56ef5STaehee Yoo 60662e56ef5STaehee Yoo if (len != sizeof(*crypto_info_aria_gcm_256)) { 60762e56ef5STaehee Yoo rc = -EINVAL; 60862e56ef5STaehee Yoo goto out; 60962e56ef5STaehee Yoo } 61062e56ef5STaehee Yoo memcpy(crypto_info_aria_gcm_256->iv, 61162e56ef5STaehee Yoo cctx->iv + TLS_CIPHER_ARIA_GCM_256_SALT_SIZE, 61262e56ef5STaehee Yoo TLS_CIPHER_ARIA_GCM_256_IV_SIZE); 61362e56ef5STaehee Yoo memcpy(crypto_info_aria_gcm_256->rec_seq, cctx->rec_seq, 61462e56ef5STaehee Yoo TLS_CIPHER_ARIA_GCM_256_REC_SEQ_SIZE); 61562e56ef5STaehee Yoo if (copy_to_user(optval, 61662e56ef5STaehee Yoo crypto_info_aria_gcm_256, 61762e56ef5STaehee Yoo sizeof(*crypto_info_aria_gcm_256))) 61862e56ef5STaehee Yoo rc = -EFAULT; 61962e56ef5STaehee Yoo break; 62062e56ef5STaehee Yoo } 6213c4d7559SDave Watson default: 6223c4d7559SDave Watson rc = -EINVAL; 6233c4d7559SDave Watson } 6243c4d7559SDave Watson 6253c4d7559SDave Watson out: 6263c4d7559SDave Watson return rc; 6273c4d7559SDave Watson } 6283c4d7559SDave Watson 629c1318b39SBoris Pismenny static int do_tls_getsockopt_tx_zc(struct sock *sk, char __user *optval, 630c1318b39SBoris Pismenny int __user *optlen) 631c1318b39SBoris Pismenny { 632c1318b39SBoris Pismenny struct tls_context *ctx = tls_get_ctx(sk); 633c1318b39SBoris Pismenny unsigned int value; 634c1318b39SBoris Pismenny int len; 635c1318b39SBoris Pismenny 636c1318b39SBoris Pismenny if (get_user(len, optlen)) 637c1318b39SBoris Pismenny return -EFAULT; 638c1318b39SBoris Pismenny 639c1318b39SBoris Pismenny if (len != sizeof(value)) 640c1318b39SBoris Pismenny return -EINVAL; 641c1318b39SBoris Pismenny 642c1318b39SBoris Pismenny value = ctx->zerocopy_sendfile; 643c1318b39SBoris Pismenny if (copy_to_user(optval, &value, sizeof(value))) 644c1318b39SBoris Pismenny return -EFAULT; 645c1318b39SBoris Pismenny 646c1318b39SBoris Pismenny return 0; 647c1318b39SBoris Pismenny } 648c1318b39SBoris Pismenny 64988527790SJakub Kicinski static int do_tls_getsockopt_no_pad(struct sock *sk, char __user *optval, 65088527790SJakub Kicinski int __user *optlen) 65188527790SJakub Kicinski { 65288527790SJakub Kicinski struct tls_context *ctx = tls_get_ctx(sk); 65357128e98SJakub Kicinski int value, len; 65488527790SJakub Kicinski 65588527790SJakub Kicinski if (ctx->prot_info.version != TLS_1_3_VERSION) 65688527790SJakub Kicinski return -EINVAL; 65788527790SJakub Kicinski 65888527790SJakub Kicinski if (get_user(len, optlen)) 65988527790SJakub Kicinski return -EFAULT; 66088527790SJakub Kicinski if (len < sizeof(value)) 66188527790SJakub Kicinski return -EINVAL; 66288527790SJakub Kicinski 66357128e98SJakub Kicinski value = -EINVAL; 66488527790SJakub Kicinski if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) 66588527790SJakub Kicinski value = ctx->rx_no_pad; 66657128e98SJakub Kicinski if (value < 0) 66757128e98SJakub Kicinski return value; 66888527790SJakub Kicinski 66988527790SJakub Kicinski if (put_user(sizeof(value), optlen)) 67088527790SJakub Kicinski return -EFAULT; 67188527790SJakub Kicinski if (copy_to_user(optval, &value, sizeof(value))) 67288527790SJakub Kicinski return -EFAULT; 67388527790SJakub Kicinski 67488527790SJakub Kicinski return 0; 67588527790SJakub Kicinski } 67688527790SJakub Kicinski 6773c4d7559SDave Watson static int do_tls_getsockopt(struct sock *sk, int optname, 6783c4d7559SDave Watson char __user *optval, int __user *optlen) 6793c4d7559SDave Watson { 6803c4d7559SDave Watson int rc = 0; 6813c4d7559SDave Watson 68249c47cc2SHangyu Hua lock_sock(sk); 68349c47cc2SHangyu Hua 6843c4d7559SDave Watson switch (optname) { 6853c4d7559SDave Watson case TLS_TX: 686ffa81fa4SYutaro Hayakawa case TLS_RX: 687ffa81fa4SYutaro Hayakawa rc = do_tls_getsockopt_conf(sk, optval, optlen, 688ffa81fa4SYutaro Hayakawa optname == TLS_TX); 6893c4d7559SDave Watson break; 690b489a6e5SMaxim Mikityanskiy case TLS_TX_ZEROCOPY_RO: 691c1318b39SBoris Pismenny rc = do_tls_getsockopt_tx_zc(sk, optval, optlen); 692c1318b39SBoris Pismenny break; 69388527790SJakub Kicinski case TLS_RX_EXPECT_NO_PAD: 69488527790SJakub Kicinski rc = do_tls_getsockopt_no_pad(sk, optval, optlen); 69588527790SJakub Kicinski break; 6963c4d7559SDave Watson default: 6973c4d7559SDave Watson rc = -ENOPROTOOPT; 6983c4d7559SDave Watson break; 6993c4d7559SDave Watson } 70049c47cc2SHangyu Hua 70149c47cc2SHangyu Hua release_sock(sk); 70249c47cc2SHangyu Hua 7033c4d7559SDave Watson return rc; 7043c4d7559SDave Watson } 7053c4d7559SDave Watson 7063c4d7559SDave Watson static int tls_getsockopt(struct sock *sk, int level, int optname, 7073c4d7559SDave Watson char __user *optval, int __user *optlen) 7083c4d7559SDave Watson { 7093c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 7103c4d7559SDave Watson 7113c4d7559SDave Watson if (level != SOL_TLS) 712be7bbea1SJakub Kicinski return ctx->sk_proto->getsockopt(sk, level, 713be7bbea1SJakub Kicinski optname, optval, optlen); 7143c4d7559SDave Watson 7153c4d7559SDave Watson return do_tls_getsockopt(sk, optname, optval, optlen); 7163c4d7559SDave Watson } 7173c4d7559SDave Watson 718a7b75c5aSChristoph Hellwig static int do_tls_setsockopt_conf(struct sock *sk, sockptr_t optval, 719c46234ebSDave Watson unsigned int optlen, int tx) 7203c4d7559SDave Watson { 721196c31b4SIlya Lesokhin struct tls_crypto_info *crypto_info; 7224509de14SVakul Garg struct tls_crypto_info *alt_crypto_info; 7233c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 724fb99bce7SDave Watson size_t optsize; 7253c4d7559SDave Watson int rc = 0; 72658371585SDave Watson int conf; 7273c4d7559SDave Watson 7281ddcbfbfSZiyang Xuan if (sockptr_is_null(optval) || (optlen < sizeof(*crypto_info))) 7291ddcbfbfSZiyang Xuan return -EINVAL; 7303c4d7559SDave Watson 7314509de14SVakul Garg if (tx) { 73286029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 7334509de14SVakul Garg alt_crypto_info = &ctx->crypto_recv.info; 7344509de14SVakul Garg } else { 73586029d10SSabrina Dubroca crypto_info = &ctx->crypto_recv.info; 7364509de14SVakul Garg alt_crypto_info = &ctx->crypto_send.info; 7374509de14SVakul Garg } 738c46234ebSDave Watson 739196c31b4SIlya Lesokhin /* Currently we don't support set crypto info more than one time */ 7401ddcbfbfSZiyang Xuan if (TLS_CRYPTO_INFO_READY(crypto_info)) 7411ddcbfbfSZiyang Xuan return -EBUSY; 742196c31b4SIlya Lesokhin 743a7b75c5aSChristoph Hellwig rc = copy_from_sockptr(crypto_info, optval, sizeof(*crypto_info)); 7443c4d7559SDave Watson if (rc) { 7453c4d7559SDave Watson rc = -EFAULT; 746257082e6SBoris Pismenny goto err_crypto_info; 7473c4d7559SDave Watson } 7483c4d7559SDave Watson 7493c4d7559SDave Watson /* check version */ 750130b392cSDave Watson if (crypto_info->version != TLS_1_2_VERSION && 751130b392cSDave Watson crypto_info->version != TLS_1_3_VERSION) { 7524a5cdc60SValentin Vidic rc = -EINVAL; 753196c31b4SIlya Lesokhin goto err_crypto_info; 7543c4d7559SDave Watson } 7553c4d7559SDave Watson 7564509de14SVakul Garg /* Ensure that TLS version and ciphers are same in both directions */ 7574509de14SVakul Garg if (TLS_CRYPTO_INFO_READY(alt_crypto_info)) { 7584509de14SVakul Garg if (alt_crypto_info->version != crypto_info->version || 7594509de14SVakul Garg alt_crypto_info->cipher_type != crypto_info->cipher_type) { 7604509de14SVakul Garg rc = -EINVAL; 7614509de14SVakul Garg goto err_crypto_info; 7624509de14SVakul Garg } 7634509de14SVakul Garg } 7644509de14SVakul Garg 765196c31b4SIlya Lesokhin switch (crypto_info->cipher_type) { 766fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_128: 767f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_gcm_128); 768f295b3aeSVakul Garg break; 769fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_256: { 770f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_gcm_256); 771f295b3aeSVakul Garg break; 772f295b3aeSVakul Garg } 773f295b3aeSVakul Garg case TLS_CIPHER_AES_CCM_128: 774f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_ccm_128); 775f295b3aeSVakul Garg break; 77674ea6106SVadim Fedorenko case TLS_CIPHER_CHACHA20_POLY1305: 77774ea6106SVadim Fedorenko optsize = sizeof(struct tls12_crypto_info_chacha20_poly1305); 77874ea6106SVadim Fedorenko break; 779227b9644STianjia Zhang case TLS_CIPHER_SM4_GCM: 780227b9644STianjia Zhang optsize = sizeof(struct tls12_crypto_info_sm4_gcm); 781227b9644STianjia Zhang break; 782227b9644STianjia Zhang case TLS_CIPHER_SM4_CCM: 783227b9644STianjia Zhang optsize = sizeof(struct tls12_crypto_info_sm4_ccm); 784227b9644STianjia Zhang break; 78562e56ef5STaehee Yoo case TLS_CIPHER_ARIA_GCM_128: 78662e56ef5STaehee Yoo if (crypto_info->version != TLS_1_2_VERSION) { 78762e56ef5STaehee Yoo rc = -EINVAL; 78862e56ef5STaehee Yoo goto err_crypto_info; 78962e56ef5STaehee Yoo } 79062e56ef5STaehee Yoo optsize = sizeof(struct tls12_crypto_info_aria_gcm_128); 79162e56ef5STaehee Yoo break; 79262e56ef5STaehee Yoo case TLS_CIPHER_ARIA_GCM_256: 79362e56ef5STaehee Yoo if (crypto_info->version != TLS_1_2_VERSION) { 79462e56ef5STaehee Yoo rc = -EINVAL; 79562e56ef5STaehee Yoo goto err_crypto_info; 79662e56ef5STaehee Yoo } 79762e56ef5STaehee Yoo optsize = sizeof(struct tls12_crypto_info_aria_gcm_256); 79862e56ef5STaehee Yoo break; 799f295b3aeSVakul Garg default: 800f295b3aeSVakul Garg rc = -EINVAL; 801f295b3aeSVakul Garg goto err_crypto_info; 802f295b3aeSVakul Garg } 803f295b3aeSVakul Garg 804fb99bce7SDave Watson if (optlen != optsize) { 8053c4d7559SDave Watson rc = -EINVAL; 8066db959c8SSabrina Dubroca goto err_crypto_info; 8073c4d7559SDave Watson } 808f295b3aeSVakul Garg 809d3c48151SChristoph Hellwig rc = copy_from_sockptr_offset(crypto_info + 1, optval, 810d3c48151SChristoph Hellwig sizeof(*crypto_info), 811196c31b4SIlya Lesokhin optlen - sizeof(*crypto_info)); 8123c4d7559SDave Watson if (rc) { 8133c4d7559SDave Watson rc = -EFAULT; 8143c4d7559SDave Watson goto err_crypto_info; 8153c4d7559SDave Watson } 8163c4d7559SDave Watson 817c46234ebSDave Watson if (tx) { 818e8f69799SIlya Lesokhin rc = tls_set_device_offload(sk, ctx); 819e8f69799SIlya Lesokhin conf = TLS_HW; 820b32fd3ccSJakub Kicinski if (!rc) { 821b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSTXDEVICE); 822b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXDEVICE); 823b32fd3ccSJakub Kicinski } else { 824c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 1); 825318892acSJakub Kicinski if (rc) 826318892acSJakub Kicinski goto err_crypto_info; 827b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSTXSW); 828b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXSW); 829f66de3eeSBoris Pismenny conf = TLS_SW; 830e8f69799SIlya Lesokhin } 831c46234ebSDave Watson } else { 8324799ac81SBoris Pismenny rc = tls_set_device_offload_rx(sk, ctx); 8334799ac81SBoris Pismenny conf = TLS_HW; 834b32fd3ccSJakub Kicinski if (!rc) { 835b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXDEVICE); 836b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXDEVICE); 837b32fd3ccSJakub Kicinski } else { 838c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 0); 839318892acSJakub Kicinski if (rc) 840318892acSJakub Kicinski goto err_crypto_info; 841b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXSW); 842b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXSW); 843f66de3eeSBoris Pismenny conf = TLS_SW; 844c46234ebSDave Watson } 845313ab004SJohn Fastabend tls_sw_strparser_arm(sk, ctx); 8464799ac81SBoris Pismenny } 847c46234ebSDave Watson 848f66de3eeSBoris Pismenny if (tx) 849f66de3eeSBoris Pismenny ctx->tx_conf = conf; 850f66de3eeSBoris Pismenny else 851f66de3eeSBoris Pismenny ctx->rx_conf = conf; 8526d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 853c46234ebSDave Watson if (tx) { 854ee181e52SIlya Lesokhin ctx->sk_write_space = sk->sk_write_space; 855ee181e52SIlya Lesokhin sk->sk_write_space = tls_write_space; 85684c61fe1SJakub Kicinski } else { 85784c61fe1SJakub Kicinski struct tls_sw_context_rx *rx_ctx = tls_sw_ctx_rx(ctx); 85884c61fe1SJakub Kicinski 85984c61fe1SJakub Kicinski tls_strp_check_rcv(&rx_ctx->strp); 860c46234ebSDave Watson } 8611ddcbfbfSZiyang Xuan return 0; 8623c4d7559SDave Watson 8633c4d7559SDave Watson err_crypto_info: 864c844eb46SSabrina Dubroca memzero_explicit(crypto_info, sizeof(union tls_crypto_context)); 8653c4d7559SDave Watson return rc; 8663c4d7559SDave Watson } 8673c4d7559SDave Watson 868c1318b39SBoris Pismenny static int do_tls_setsockopt_tx_zc(struct sock *sk, sockptr_t optval, 869c1318b39SBoris Pismenny unsigned int optlen) 870c1318b39SBoris Pismenny { 871c1318b39SBoris Pismenny struct tls_context *ctx = tls_get_ctx(sk); 872c1318b39SBoris Pismenny unsigned int value; 873c1318b39SBoris Pismenny 874c1318b39SBoris Pismenny if (sockptr_is_null(optval) || optlen != sizeof(value)) 875c1318b39SBoris Pismenny return -EINVAL; 876c1318b39SBoris Pismenny 877c1318b39SBoris Pismenny if (copy_from_sockptr(&value, optval, sizeof(value))) 878c1318b39SBoris Pismenny return -EFAULT; 879c1318b39SBoris Pismenny 880c1318b39SBoris Pismenny if (value > 1) 881c1318b39SBoris Pismenny return -EINVAL; 882c1318b39SBoris Pismenny 883c1318b39SBoris Pismenny ctx->zerocopy_sendfile = value; 884c1318b39SBoris Pismenny 885c1318b39SBoris Pismenny return 0; 886c1318b39SBoris Pismenny } 887c1318b39SBoris Pismenny 88888527790SJakub Kicinski static int do_tls_setsockopt_no_pad(struct sock *sk, sockptr_t optval, 88988527790SJakub Kicinski unsigned int optlen) 89088527790SJakub Kicinski { 89188527790SJakub Kicinski struct tls_context *ctx = tls_get_ctx(sk); 89288527790SJakub Kicinski u32 val; 89388527790SJakub Kicinski int rc; 89488527790SJakub Kicinski 89588527790SJakub Kicinski if (ctx->prot_info.version != TLS_1_3_VERSION || 89688527790SJakub Kicinski sockptr_is_null(optval) || optlen < sizeof(val)) 89788527790SJakub Kicinski return -EINVAL; 89888527790SJakub Kicinski 89988527790SJakub Kicinski rc = copy_from_sockptr(&val, optval, sizeof(val)); 90088527790SJakub Kicinski if (rc) 90188527790SJakub Kicinski return -EFAULT; 90288527790SJakub Kicinski if (val > 1) 90388527790SJakub Kicinski return -EINVAL; 90488527790SJakub Kicinski rc = check_zeroed_sockptr(optval, sizeof(val), optlen - sizeof(val)); 90588527790SJakub Kicinski if (rc < 1) 90688527790SJakub Kicinski return rc == 0 ? -EINVAL : rc; 90788527790SJakub Kicinski 90888527790SJakub Kicinski lock_sock(sk); 90988527790SJakub Kicinski rc = -EINVAL; 91088527790SJakub Kicinski if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) { 91188527790SJakub Kicinski ctx->rx_no_pad = val; 91288527790SJakub Kicinski tls_update_rx_zc_capable(ctx); 91388527790SJakub Kicinski rc = 0; 91488527790SJakub Kicinski } 91588527790SJakub Kicinski release_sock(sk); 91688527790SJakub Kicinski 91788527790SJakub Kicinski return rc; 91888527790SJakub Kicinski } 91988527790SJakub Kicinski 920a7b75c5aSChristoph Hellwig static int do_tls_setsockopt(struct sock *sk, int optname, sockptr_t optval, 921a7b75c5aSChristoph Hellwig unsigned int optlen) 9223c4d7559SDave Watson { 9233c4d7559SDave Watson int rc = 0; 9243c4d7559SDave Watson 9253c4d7559SDave Watson switch (optname) { 9263c4d7559SDave Watson case TLS_TX: 927c46234ebSDave Watson case TLS_RX: 9283c4d7559SDave Watson lock_sock(sk); 929c46234ebSDave Watson rc = do_tls_setsockopt_conf(sk, optval, optlen, 930c46234ebSDave Watson optname == TLS_TX); 9313c4d7559SDave Watson release_sock(sk); 9323c4d7559SDave Watson break; 933b489a6e5SMaxim Mikityanskiy case TLS_TX_ZEROCOPY_RO: 934c1318b39SBoris Pismenny lock_sock(sk); 935c1318b39SBoris Pismenny rc = do_tls_setsockopt_tx_zc(sk, optval, optlen); 936c1318b39SBoris Pismenny release_sock(sk); 937c1318b39SBoris Pismenny break; 93888527790SJakub Kicinski case TLS_RX_EXPECT_NO_PAD: 93988527790SJakub Kicinski rc = do_tls_setsockopt_no_pad(sk, optval, optlen); 94088527790SJakub Kicinski break; 9413c4d7559SDave Watson default: 9423c4d7559SDave Watson rc = -ENOPROTOOPT; 9433c4d7559SDave Watson break; 9443c4d7559SDave Watson } 9453c4d7559SDave Watson return rc; 9463c4d7559SDave Watson } 9473c4d7559SDave Watson 9483c4d7559SDave Watson static int tls_setsockopt(struct sock *sk, int level, int optname, 949a7b75c5aSChristoph Hellwig sockptr_t optval, unsigned int optlen) 9503c4d7559SDave Watson { 9513c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 9523c4d7559SDave Watson 9533c4d7559SDave Watson if (level != SOL_TLS) 954be7bbea1SJakub Kicinski return ctx->sk_proto->setsockopt(sk, level, optname, optval, 955be7bbea1SJakub Kicinski optlen); 9563c4d7559SDave Watson 9573c4d7559SDave Watson return do_tls_setsockopt(sk, optname, optval, optlen); 9583c4d7559SDave Watson } 9593c4d7559SDave Watson 96008700dabSJakub Kicinski struct tls_context *tls_ctx_create(struct sock *sk) 961dd0bed16SAtul Gupta { 962dd0bed16SAtul Gupta struct inet_connection_sock *icsk = inet_csk(sk); 963dd0bed16SAtul Gupta struct tls_context *ctx; 964dd0bed16SAtul Gupta 965c6ec179aSGanesh Goudar ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC); 966dd0bed16SAtul Gupta if (!ctx) 967dd0bed16SAtul Gupta return NULL; 968dd0bed16SAtul Gupta 96979ffe608SJakub Kicinski mutex_init(&ctx->tx_lock); 97015a7dea7SJakub Kicinski rcu_assign_pointer(icsk->icsk_ulp_data, ctx); 971d5bee737SJakub Sitnicki ctx->sk_proto = READ_ONCE(sk->sk_prot); 972c55dcdd4SMaxim Mikityanskiy ctx->sk = sk; 973dd0bed16SAtul Gupta return ctx; 974dd0bed16SAtul Gupta } 975dd0bed16SAtul Gupta 976f3911f73SJakub Kicinski static void build_proto_ops(struct proto_ops ops[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 977f3911f73SJakub Kicinski const struct proto_ops *base) 978f3911f73SJakub Kicinski { 979f3911f73SJakub Kicinski ops[TLS_BASE][TLS_BASE] = *base; 980f3911f73SJakub Kicinski 981f3911f73SJakub Kicinski ops[TLS_SW ][TLS_BASE] = ops[TLS_BASE][TLS_BASE]; 982df720d28SDavid Howells ops[TLS_SW ][TLS_BASE].splice_eof = tls_sw_splice_eof; 983f3911f73SJakub Kicinski 984f3911f73SJakub Kicinski ops[TLS_BASE][TLS_SW ] = ops[TLS_BASE][TLS_BASE]; 985f3911f73SJakub Kicinski ops[TLS_BASE][TLS_SW ].splice_read = tls_sw_splice_read; 986121dca78SJakub Kicinski ops[TLS_BASE][TLS_SW ].poll = tls_sk_poll; 987662fbcecSHannes Reinecke ops[TLS_BASE][TLS_SW ].read_sock = tls_sw_read_sock; 988f3911f73SJakub Kicinski 989f3911f73SJakub Kicinski ops[TLS_SW ][TLS_SW ] = ops[TLS_SW ][TLS_BASE]; 990f3911f73SJakub Kicinski ops[TLS_SW ][TLS_SW ].splice_read = tls_sw_splice_read; 991121dca78SJakub Kicinski ops[TLS_SW ][TLS_SW ].poll = tls_sk_poll; 992662fbcecSHannes Reinecke ops[TLS_SW ][TLS_SW ].read_sock = tls_sw_read_sock; 993f3911f73SJakub Kicinski 994f3911f73SJakub Kicinski #ifdef CONFIG_TLS_DEVICE 995f3911f73SJakub Kicinski ops[TLS_HW ][TLS_BASE] = ops[TLS_BASE][TLS_BASE]; 996f3911f73SJakub Kicinski 997f3911f73SJakub Kicinski ops[TLS_HW ][TLS_SW ] = ops[TLS_BASE][TLS_SW ]; 998f3911f73SJakub Kicinski 999f3911f73SJakub Kicinski ops[TLS_BASE][TLS_HW ] = ops[TLS_BASE][TLS_SW ]; 1000f3911f73SJakub Kicinski 1001f3911f73SJakub Kicinski ops[TLS_SW ][TLS_HW ] = ops[TLS_SW ][TLS_SW ]; 1002f3911f73SJakub Kicinski 1003f3911f73SJakub Kicinski ops[TLS_HW ][TLS_HW ] = ops[TLS_HW ][TLS_SW ]; 1004f3911f73SJakub Kicinski #endif 1005f3911f73SJakub Kicinski #ifdef CONFIG_TLS_TOE 1006f3911f73SJakub Kicinski ops[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 1007f3911f73SJakub Kicinski #endif 1008f3911f73SJakub Kicinski } 1009f3911f73SJakub Kicinski 101063a6b3feSAtul Gupta static void tls_build_proto(struct sock *sk) 101163a6b3feSAtul Gupta { 101263a6b3feSAtul Gupta int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 10139a893949SWill Deacon struct proto *prot = READ_ONCE(sk->sk_prot); 101463a6b3feSAtul Gupta 101563a6b3feSAtul Gupta /* Build IPv6 TLS whenever the address of tcpv6 _prot changes */ 101663a6b3feSAtul Gupta if (ip_ver == TLSV6 && 10175bb4c45dSJakub Sitnicki unlikely(prot != smp_load_acquire(&saved_tcpv6_prot))) { 101863a6b3feSAtul Gupta mutex_lock(&tcpv6_prot_mutex); 10195bb4c45dSJakub Sitnicki if (likely(prot != saved_tcpv6_prot)) { 10205bb4c45dSJakub Sitnicki build_protos(tls_prots[TLSV6], prot); 1021f3911f73SJakub Kicinski build_proto_ops(tls_proto_ops[TLSV6], 1022f3911f73SJakub Kicinski sk->sk_socket->ops); 10235bb4c45dSJakub Sitnicki smp_store_release(&saved_tcpv6_prot, prot); 102463a6b3feSAtul Gupta } 102563a6b3feSAtul Gupta mutex_unlock(&tcpv6_prot_mutex); 102663a6b3feSAtul Gupta } 102763a6b3feSAtul Gupta 102863a6b3feSAtul Gupta if (ip_ver == TLSV4 && 10295bb4c45dSJakub Sitnicki unlikely(prot != smp_load_acquire(&saved_tcpv4_prot))) { 103063a6b3feSAtul Gupta mutex_lock(&tcpv4_prot_mutex); 10315bb4c45dSJakub Sitnicki if (likely(prot != saved_tcpv4_prot)) { 10325bb4c45dSJakub Sitnicki build_protos(tls_prots[TLSV4], prot); 1033f3911f73SJakub Kicinski build_proto_ops(tls_proto_ops[TLSV4], 1034f3911f73SJakub Kicinski sk->sk_socket->ops); 10355bb4c45dSJakub Sitnicki smp_store_release(&saved_tcpv4_prot, prot); 103663a6b3feSAtul Gupta } 103763a6b3feSAtul Gupta mutex_unlock(&tcpv4_prot_mutex); 103863a6b3feSAtul Gupta } 103963a6b3feSAtul Gupta } 104063a6b3feSAtul Gupta 1041f66de3eeSBoris Pismenny static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 1042f13fe3e6SJakub Sitnicki const struct proto *base) 1043c113187dSBoris Pismenny { 1044f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE] = *base; 1045f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].setsockopt = tls_setsockopt; 1046f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].getsockopt = tls_getsockopt; 1047f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].close = tls_sk_proto_close; 1048c113187dSBoris Pismenny 1049f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 1050f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendmsg = tls_sw_sendmsg; 1051df720d28SDavid Howells prot[TLS_SW][TLS_BASE].splice_eof = tls_sw_splice_eof; 1052c46234ebSDave Watson 1053f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW] = prot[TLS_BASE][TLS_BASE]; 1054f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].recvmsg = tls_sw_recvmsg; 10557b50ecfcSCong Wang prot[TLS_BASE][TLS_SW].sock_is_readable = tls_sw_sock_is_readable; 1056f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].close = tls_sk_proto_close; 1057c46234ebSDave Watson 1058f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW] = prot[TLS_SW][TLS_BASE]; 1059f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].recvmsg = tls_sw_recvmsg; 10607b50ecfcSCong Wang prot[TLS_SW][TLS_SW].sock_is_readable = tls_sw_sock_is_readable; 1061f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].close = tls_sk_proto_close; 1062dd0bed16SAtul Gupta 1063e8f69799SIlya Lesokhin #ifdef CONFIG_TLS_DEVICE 1064e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 1065e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendmsg = tls_device_sendmsg; 1066d4c1e80bSDavid Howells prot[TLS_HW][TLS_BASE].splice_eof = tls_device_splice_eof; 1067e8f69799SIlya Lesokhin 1068e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW] = prot[TLS_BASE][TLS_SW]; 1069e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendmsg = tls_device_sendmsg; 1070d4c1e80bSDavid Howells prot[TLS_HW][TLS_SW].splice_eof = tls_device_splice_eof; 10714799ac81SBoris Pismenny 10724799ac81SBoris Pismenny prot[TLS_BASE][TLS_HW] = prot[TLS_BASE][TLS_SW]; 10734799ac81SBoris Pismenny 10744799ac81SBoris Pismenny prot[TLS_SW][TLS_HW] = prot[TLS_SW][TLS_SW]; 10754799ac81SBoris Pismenny 10764799ac81SBoris Pismenny prot[TLS_HW][TLS_HW] = prot[TLS_HW][TLS_SW]; 1077e8f69799SIlya Lesokhin #endif 107853b4414aSJakub Kicinski #ifdef CONFIG_TLS_TOE 1079f66de3eeSBoris Pismenny prot[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 10800eb8745eSJakub Kicinski prot[TLS_HW_RECORD][TLS_HW_RECORD].hash = tls_toe_hash; 10810eb8745eSJakub Kicinski prot[TLS_HW_RECORD][TLS_HW_RECORD].unhash = tls_toe_unhash; 108253b4414aSJakub Kicinski #endif 1083c113187dSBoris Pismenny } 1084c113187dSBoris Pismenny 10853c4d7559SDave Watson static int tls_init(struct sock *sk) 10863c4d7559SDave Watson { 10873c4d7559SDave Watson struct tls_context *ctx; 10883c4d7559SDave Watson int rc = 0; 10893c4d7559SDave Watson 109016bed0e6SJakub Kicinski tls_build_proto(sk); 109116bed0e6SJakub Kicinski 109253b4414aSJakub Kicinski #ifdef CONFIG_TLS_TOE 10930eb8745eSJakub Kicinski if (tls_toe_bypass(sk)) 109495fa1454SJohn Fastabend return 0; 109553b4414aSJakub Kicinski #endif 1096dd0bed16SAtul Gupta 1097d91c3e17SIlya Lesokhin /* The TLS ulp is currently supported only for TCP sockets 1098d91c3e17SIlya Lesokhin * in ESTABLISHED state. 1099d91c3e17SIlya Lesokhin * Supporting sockets in LISTEN state will require us 1100d91c3e17SIlya Lesokhin * to modify the accept implementation to clone rather then 1101d91c3e17SIlya Lesokhin * share the ulp context. 1102d91c3e17SIlya Lesokhin */ 1103d91c3e17SIlya Lesokhin if (sk->sk_state != TCP_ESTABLISHED) 11044a5cdc60SValentin Vidic return -ENOTCONN; 1105d91c3e17SIlya Lesokhin 11063c4d7559SDave Watson /* allocate tls context */ 110795fa1454SJohn Fastabend write_lock_bh(&sk->sk_callback_lock); 110808700dabSJakub Kicinski ctx = tls_ctx_create(sk); 11093c4d7559SDave Watson if (!ctx) { 11103c4d7559SDave Watson rc = -ENOMEM; 11113c4d7559SDave Watson goto out; 11123c4d7559SDave Watson } 11136d88207fSIlya Lesokhin 1114f66de3eeSBoris Pismenny ctx->tx_conf = TLS_BASE; 1115f66de3eeSBoris Pismenny ctx->rx_conf = TLS_BASE; 11166d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 11173c4d7559SDave Watson out: 111895fa1454SJohn Fastabend write_unlock_bh(&sk->sk_callback_lock); 11193c4d7559SDave Watson return rc; 11203c4d7559SDave Watson } 11213c4d7559SDave Watson 112233bfe20dSJohn Fastabend static void tls_update(struct sock *sk, struct proto *p, 112333bfe20dSJohn Fastabend void (*write_space)(struct sock *sk)) 112495fa1454SJohn Fastabend { 112595fa1454SJohn Fastabend struct tls_context *ctx; 112695fa1454SJohn Fastabend 1127e34a07c0SJakub Kicinski WARN_ON_ONCE(sk->sk_prot == p); 1128e34a07c0SJakub Kicinski 112995fa1454SJohn Fastabend ctx = tls_get_ctx(sk); 113033bfe20dSJohn Fastabend if (likely(ctx)) { 113133bfe20dSJohn Fastabend ctx->sk_write_space = write_space; 113295fa1454SJohn Fastabend ctx->sk_proto = p; 113333bfe20dSJohn Fastabend } else { 1134b8e202d1SJakub Sitnicki /* Pairs with lockless read in sk_clone_lock(). */ 1135b8e202d1SJakub Sitnicki WRITE_ONCE(sk->sk_prot, p); 113633bfe20dSJohn Fastabend sk->sk_write_space = write_space; 113733bfe20dSJohn Fastabend } 113895fa1454SJohn Fastabend } 113995fa1454SJohn Fastabend 114058790314SJakub Kicinski static u16 tls_user_config(struct tls_context *ctx, bool tx) 114158790314SJakub Kicinski { 114258790314SJakub Kicinski u16 config = tx ? ctx->tx_conf : ctx->rx_conf; 114358790314SJakub Kicinski 114458790314SJakub Kicinski switch (config) { 114558790314SJakub Kicinski case TLS_BASE: 114658790314SJakub Kicinski return TLS_CONF_BASE; 114758790314SJakub Kicinski case TLS_SW: 114858790314SJakub Kicinski return TLS_CONF_SW; 114958790314SJakub Kicinski case TLS_HW: 115058790314SJakub Kicinski return TLS_CONF_HW; 115158790314SJakub Kicinski case TLS_HW_RECORD: 115258790314SJakub Kicinski return TLS_CONF_HW_RECORD; 115358790314SJakub Kicinski } 115458790314SJakub Kicinski return 0; 115558790314SJakub Kicinski } 115658790314SJakub Kicinski 115726811cc9SDavide Caratti static int tls_get_info(const struct sock *sk, struct sk_buff *skb) 115826811cc9SDavide Caratti { 115926811cc9SDavide Caratti u16 version, cipher_type; 116026811cc9SDavide Caratti struct tls_context *ctx; 116126811cc9SDavide Caratti struct nlattr *start; 116226811cc9SDavide Caratti int err; 116326811cc9SDavide Caratti 116426811cc9SDavide Caratti start = nla_nest_start_noflag(skb, INET_ULP_INFO_TLS); 116526811cc9SDavide Caratti if (!start) 116626811cc9SDavide Caratti return -EMSGSIZE; 116726811cc9SDavide Caratti 116826811cc9SDavide Caratti rcu_read_lock(); 116926811cc9SDavide Caratti ctx = rcu_dereference(inet_csk(sk)->icsk_ulp_data); 117026811cc9SDavide Caratti if (!ctx) { 117126811cc9SDavide Caratti err = 0; 117226811cc9SDavide Caratti goto nla_failure; 117326811cc9SDavide Caratti } 117426811cc9SDavide Caratti version = ctx->prot_info.version; 117526811cc9SDavide Caratti if (version) { 117626811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_VERSION, version); 117726811cc9SDavide Caratti if (err) 117826811cc9SDavide Caratti goto nla_failure; 117926811cc9SDavide Caratti } 118026811cc9SDavide Caratti cipher_type = ctx->prot_info.cipher_type; 118126811cc9SDavide Caratti if (cipher_type) { 118226811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_CIPHER, cipher_type); 118326811cc9SDavide Caratti if (err) 118426811cc9SDavide Caratti goto nla_failure; 118526811cc9SDavide Caratti } 118626811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_TXCONF, tls_user_config(ctx, true)); 118726811cc9SDavide Caratti if (err) 118826811cc9SDavide Caratti goto nla_failure; 118926811cc9SDavide Caratti 119026811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_RXCONF, tls_user_config(ctx, false)); 119126811cc9SDavide Caratti if (err) 119226811cc9SDavide Caratti goto nla_failure; 119326811cc9SDavide Caratti 1194c1318b39SBoris Pismenny if (ctx->tx_conf == TLS_HW && ctx->zerocopy_sendfile) { 1195b489a6e5SMaxim Mikityanskiy err = nla_put_flag(skb, TLS_INFO_ZC_RO_TX); 1196c1318b39SBoris Pismenny if (err) 1197c1318b39SBoris Pismenny goto nla_failure; 1198c1318b39SBoris Pismenny } 119988527790SJakub Kicinski if (ctx->rx_no_pad) { 120088527790SJakub Kicinski err = nla_put_flag(skb, TLS_INFO_RX_NO_PAD); 120188527790SJakub Kicinski if (err) 120288527790SJakub Kicinski goto nla_failure; 120388527790SJakub Kicinski } 1204c1318b39SBoris Pismenny 120526811cc9SDavide Caratti rcu_read_unlock(); 120626811cc9SDavide Caratti nla_nest_end(skb, start); 120726811cc9SDavide Caratti return 0; 120826811cc9SDavide Caratti 120926811cc9SDavide Caratti nla_failure: 121026811cc9SDavide Caratti rcu_read_unlock(); 121126811cc9SDavide Caratti nla_nest_cancel(skb, start); 121226811cc9SDavide Caratti return err; 121326811cc9SDavide Caratti } 121426811cc9SDavide Caratti 121526811cc9SDavide Caratti static size_t tls_get_info_size(const struct sock *sk) 121626811cc9SDavide Caratti { 121726811cc9SDavide Caratti size_t size = 0; 121826811cc9SDavide Caratti 121926811cc9SDavide Caratti size += nla_total_size(0) + /* INET_ULP_INFO_TLS */ 122026811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_VERSION */ 122126811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_CIPHER */ 122226811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_RXCONF */ 122326811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_TXCONF */ 1224b489a6e5SMaxim Mikityanskiy nla_total_size(0) + /* TLS_INFO_ZC_RO_TX */ 122588527790SJakub Kicinski nla_total_size(0) + /* TLS_INFO_RX_NO_PAD */ 122626811cc9SDavide Caratti 0; 122726811cc9SDavide Caratti 122826811cc9SDavide Caratti return size; 122926811cc9SDavide Caratti } 123026811cc9SDavide Caratti 1231d26b698dSJakub Kicinski static int __net_init tls_init_net(struct net *net) 1232d26b698dSJakub Kicinski { 1233d26b698dSJakub Kicinski int err; 1234d26b698dSJakub Kicinski 1235d26b698dSJakub Kicinski net->mib.tls_statistics = alloc_percpu(struct linux_tls_mib); 1236d26b698dSJakub Kicinski if (!net->mib.tls_statistics) 1237d26b698dSJakub Kicinski return -ENOMEM; 1238d26b698dSJakub Kicinski 1239d26b698dSJakub Kicinski err = tls_proc_init(net); 1240d26b698dSJakub Kicinski if (err) 1241d26b698dSJakub Kicinski goto err_free_stats; 1242d26b698dSJakub Kicinski 1243d26b698dSJakub Kicinski return 0; 1244d26b698dSJakub Kicinski err_free_stats: 1245d26b698dSJakub Kicinski free_percpu(net->mib.tls_statistics); 1246d26b698dSJakub Kicinski return err; 1247d26b698dSJakub Kicinski } 1248d26b698dSJakub Kicinski 1249d26b698dSJakub Kicinski static void __net_exit tls_exit_net(struct net *net) 1250d26b698dSJakub Kicinski { 1251d26b698dSJakub Kicinski tls_proc_fini(net); 1252d26b698dSJakub Kicinski free_percpu(net->mib.tls_statistics); 1253d26b698dSJakub Kicinski } 1254d26b698dSJakub Kicinski 1255d26b698dSJakub Kicinski static struct pernet_operations tls_proc_ops = { 1256d26b698dSJakub Kicinski .init = tls_init_net, 1257d26b698dSJakub Kicinski .exit = tls_exit_net, 1258d26b698dSJakub Kicinski }; 1259d26b698dSJakub Kicinski 12603c4d7559SDave Watson static struct tcp_ulp_ops tcp_tls_ulp_ops __read_mostly = { 12613c4d7559SDave Watson .name = "tls", 12623c4d7559SDave Watson .owner = THIS_MODULE, 12633c4d7559SDave Watson .init = tls_init, 126495fa1454SJohn Fastabend .update = tls_update, 126526811cc9SDavide Caratti .get_info = tls_get_info, 126626811cc9SDavide Caratti .get_info_size = tls_get_info_size, 12673c4d7559SDave Watson }; 12683c4d7559SDave Watson 12693c4d7559SDave Watson static int __init tls_register(void) 12703c4d7559SDave Watson { 1271d26b698dSJakub Kicinski int err; 1272d26b698dSJakub Kicinski 1273d26b698dSJakub Kicinski err = register_pernet_subsys(&tls_proc_ops); 1274d26b698dSJakub Kicinski if (err) 1275d26b698dSJakub Kicinski return err; 1276d26b698dSJakub Kicinski 127784c61fe1SJakub Kicinski err = tls_strp_dev_init(); 127884c61fe1SJakub Kicinski if (err) 127984c61fe1SJakub Kicinski goto err_pernet; 128084c61fe1SJakub Kicinski 12813d8c51b2STariq Toukan err = tls_device_init(); 128284c61fe1SJakub Kicinski if (err) 128384c61fe1SJakub Kicinski goto err_strp; 12843d8c51b2STariq Toukan 12853c4d7559SDave Watson tcp_register_ulp(&tcp_tls_ulp_ops); 12863c4d7559SDave Watson 12873c4d7559SDave Watson return 0; 128884c61fe1SJakub Kicinski err_strp: 128984c61fe1SJakub Kicinski tls_strp_dev_exit(); 129084c61fe1SJakub Kicinski err_pernet: 129184c61fe1SJakub Kicinski unregister_pernet_subsys(&tls_proc_ops); 129284c61fe1SJakub Kicinski return err; 12933c4d7559SDave Watson } 12943c4d7559SDave Watson 12953c4d7559SDave Watson static void __exit tls_unregister(void) 12963c4d7559SDave Watson { 12973c4d7559SDave Watson tcp_unregister_ulp(&tcp_tls_ulp_ops); 129884c61fe1SJakub Kicinski tls_strp_dev_exit(); 1299e8f69799SIlya Lesokhin tls_device_cleanup(); 1300d26b698dSJakub Kicinski unregister_pernet_subsys(&tls_proc_ops); 13013c4d7559SDave Watson } 13023c4d7559SDave Watson 13033c4d7559SDave Watson module_init(tls_register); 13043c4d7559SDave Watson module_exit(tls_unregister); 1305