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*2d2c5ea2STariq Toukan #define CIPHER_SIZE_DESC(cipher) [cipher] = { \ 62*2d2c5ea2STariq Toukan .iv = cipher ## _IV_SIZE, \ 63*2d2c5ea2STariq Toukan .key = cipher ## _KEY_SIZE, \ 64*2d2c5ea2STariq Toukan .salt = cipher ## _SALT_SIZE, \ 65*2d2c5ea2STariq Toukan .tag = cipher ## _TAG_SIZE, \ 66*2d2c5ea2STariq Toukan .rec_seq = cipher ## _REC_SEQ_SIZE, \ 67*2d2c5ea2STariq Toukan } 68*2d2c5ea2STariq Toukan 69*2d2c5ea2STariq Toukan const struct tls_cipher_size_desc tls_cipher_size_desc[] = { 70*2d2c5ea2STariq Toukan CIPHER_SIZE_DESC(TLS_CIPHER_AES_GCM_128), 71*2d2c5ea2STariq Toukan CIPHER_SIZE_DESC(TLS_CIPHER_AES_GCM_256), 72*2d2c5ea2STariq Toukan CIPHER_SIZE_DESC(TLS_CIPHER_AES_CCM_128), 73*2d2c5ea2STariq Toukan CIPHER_SIZE_DESC(TLS_CIPHER_CHACHA20_POLY1305), 74*2d2c5ea2STariq Toukan CIPHER_SIZE_DESC(TLS_CIPHER_SM4_GCM), 75*2d2c5ea2STariq Toukan CIPHER_SIZE_DESC(TLS_CIPHER_SM4_CCM), 76*2d2c5ea2STariq Toukan }; 77*2d2c5ea2STariq Toukan 78f691a25cSArnd Bergmann static const struct proto *saved_tcpv6_prot; 79c113187dSBoris Pismenny static DEFINE_MUTEX(tcpv6_prot_mutex); 80f691a25cSArnd Bergmann static const struct proto *saved_tcpv4_prot; 8128cb6f1eSJohn Fastabend static DEFINE_MUTEX(tcpv4_prot_mutex); 82f66de3eeSBoris Pismenny static struct proto tls_prots[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG]; 83f3911f73SJakub Kicinski static struct proto_ops tls_proto_ops[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG]; 8463a6b3feSAtul Gupta static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 85f13fe3e6SJakub Sitnicki const struct proto *base); 866d88207fSIlya Lesokhin 8708700dabSJakub Kicinski void update_sk_prot(struct sock *sk, struct tls_context *ctx) 886d88207fSIlya Lesokhin { 89c113187dSBoris Pismenny int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 90c113187dSBoris Pismenny 91d5bee737SJakub Sitnicki WRITE_ONCE(sk->sk_prot, 92d5bee737SJakub Sitnicki &tls_prots[ip_ver][ctx->tx_conf][ctx->rx_conf]); 93f3911f73SJakub Kicinski WRITE_ONCE(sk->sk_socket->ops, 94f3911f73SJakub Kicinski &tls_proto_ops[ip_ver][ctx->tx_conf][ctx->rx_conf]); 956d88207fSIlya Lesokhin } 963c4d7559SDave Watson 973c4d7559SDave Watson int wait_on_pending_writer(struct sock *sk, long *timeo) 983c4d7559SDave Watson { 993c4d7559SDave Watson int rc = 0; 1003c4d7559SDave Watson DEFINE_WAIT_FUNC(wait, woken_wake_function); 1013c4d7559SDave Watson 1023c4d7559SDave Watson add_wait_queue(sk_sleep(sk), &wait); 1033c4d7559SDave Watson while (1) { 1043c4d7559SDave Watson if (!*timeo) { 1053c4d7559SDave Watson rc = -EAGAIN; 1063c4d7559SDave Watson break; 1073c4d7559SDave Watson } 1083c4d7559SDave Watson 1093c4d7559SDave Watson if (signal_pending(current)) { 1103c4d7559SDave Watson rc = sock_intr_errno(*timeo); 1113c4d7559SDave Watson break; 1123c4d7559SDave Watson } 1133c4d7559SDave Watson 1143c4d7559SDave Watson if (sk_wait_event(sk, timeo, !sk->sk_write_pending, &wait)) 1153c4d7559SDave Watson break; 1163c4d7559SDave Watson } 1173c4d7559SDave Watson remove_wait_queue(sk_sleep(sk), &wait); 1183c4d7559SDave Watson return rc; 1193c4d7559SDave Watson } 1203c4d7559SDave Watson 1213c4d7559SDave Watson int tls_push_sg(struct sock *sk, 1223c4d7559SDave Watson struct tls_context *ctx, 1233c4d7559SDave Watson struct scatterlist *sg, 1243c4d7559SDave Watson u16 first_offset, 1253c4d7559SDave Watson int flags) 1263c4d7559SDave Watson { 1273c4d7559SDave Watson int sendpage_flags = flags | MSG_SENDPAGE_NOTLAST; 1283c4d7559SDave Watson int ret = 0; 1293c4d7559SDave Watson struct page *p; 1303c4d7559SDave Watson size_t size; 1313c4d7559SDave Watson int offset = first_offset; 1323c4d7559SDave Watson 1333c4d7559SDave Watson size = sg->length - offset; 1343c4d7559SDave Watson offset += sg->offset; 1353c4d7559SDave Watson 136c212d2c7SDave Watson ctx->in_tcp_sendpages = true; 1373c4d7559SDave Watson while (1) { 1383c4d7559SDave Watson if (sg_is_last(sg)) 1393c4d7559SDave Watson sendpage_flags = flags; 1403c4d7559SDave Watson 1413c4d7559SDave Watson /* is sending application-limited? */ 1423c4d7559SDave Watson tcp_rate_check_app_limited(sk); 1433c4d7559SDave Watson p = sg_page(sg); 1443c4d7559SDave Watson retry: 1453c4d7559SDave Watson ret = do_tcp_sendpages(sk, p, offset, size, sendpage_flags); 1463c4d7559SDave Watson 1473c4d7559SDave Watson if (ret != size) { 1483c4d7559SDave Watson if (ret > 0) { 1493c4d7559SDave Watson offset += ret; 1503c4d7559SDave Watson size -= ret; 1513c4d7559SDave Watson goto retry; 1523c4d7559SDave Watson } 1533c4d7559SDave Watson 1543c4d7559SDave Watson offset -= sg->offset; 1553c4d7559SDave Watson ctx->partially_sent_offset = offset; 1563c4d7559SDave Watson ctx->partially_sent_record = (void *)sg; 157080324c3SAndre Tomt ctx->in_tcp_sendpages = false; 1583c4d7559SDave Watson return ret; 1593c4d7559SDave Watson } 1603c4d7559SDave Watson 1613c4d7559SDave Watson put_page(p); 1623c4d7559SDave Watson sk_mem_uncharge(sk, sg->length); 1633c4d7559SDave Watson sg = sg_next(sg); 1643c4d7559SDave Watson if (!sg) 1653c4d7559SDave Watson break; 1663c4d7559SDave Watson 1673c4d7559SDave Watson offset = sg->offset; 1683c4d7559SDave Watson size = sg->length; 1693c4d7559SDave Watson } 1703c4d7559SDave Watson 171c212d2c7SDave Watson ctx->in_tcp_sendpages = false; 1723c4d7559SDave Watson 1733c4d7559SDave Watson return 0; 1743c4d7559SDave Watson } 1753c4d7559SDave Watson 1763c4d7559SDave Watson static int tls_handle_open_record(struct sock *sk, int flags) 1773c4d7559SDave Watson { 1783c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 1793c4d7559SDave Watson 1803c4d7559SDave Watson if (tls_is_pending_open_record(ctx)) 1813c4d7559SDave Watson return ctx->push_pending_record(sk, flags); 1823c4d7559SDave Watson 1833c4d7559SDave Watson return 0; 1843c4d7559SDave Watson } 1853c4d7559SDave Watson 18658790314SJakub Kicinski int tls_process_cmsg(struct sock *sk, struct msghdr *msg, 1873c4d7559SDave Watson unsigned char *record_type) 1883c4d7559SDave Watson { 1893c4d7559SDave Watson struct cmsghdr *cmsg; 1903c4d7559SDave Watson int rc = -EINVAL; 1913c4d7559SDave Watson 1923c4d7559SDave Watson for_each_cmsghdr(cmsg, msg) { 1933c4d7559SDave Watson if (!CMSG_OK(msg, cmsg)) 1943c4d7559SDave Watson return -EINVAL; 1953c4d7559SDave Watson if (cmsg->cmsg_level != SOL_TLS) 1963c4d7559SDave Watson continue; 1973c4d7559SDave Watson 1983c4d7559SDave Watson switch (cmsg->cmsg_type) { 1993c4d7559SDave Watson case TLS_SET_RECORD_TYPE: 2003c4d7559SDave Watson if (cmsg->cmsg_len < CMSG_LEN(sizeof(*record_type))) 2013c4d7559SDave Watson return -EINVAL; 2023c4d7559SDave Watson 2033c4d7559SDave Watson if (msg->msg_flags & MSG_MORE) 2043c4d7559SDave Watson return -EINVAL; 2053c4d7559SDave Watson 2063c4d7559SDave Watson rc = tls_handle_open_record(sk, msg->msg_flags); 2073c4d7559SDave Watson if (rc) 2083c4d7559SDave Watson return rc; 2093c4d7559SDave Watson 2103c4d7559SDave Watson *record_type = *(unsigned char *)CMSG_DATA(cmsg); 2113c4d7559SDave Watson rc = 0; 2123c4d7559SDave Watson break; 2133c4d7559SDave Watson default: 2143c4d7559SDave Watson return -EINVAL; 2153c4d7559SDave Watson } 2163c4d7559SDave Watson } 2173c4d7559SDave Watson 2183c4d7559SDave Watson return rc; 2193c4d7559SDave Watson } 2203c4d7559SDave Watson 221a42055e8SVakul Garg int tls_push_partial_record(struct sock *sk, struct tls_context *ctx, 222a42055e8SVakul Garg int flags) 2233c4d7559SDave Watson { 2243c4d7559SDave Watson struct scatterlist *sg; 2253c4d7559SDave Watson u16 offset; 2263c4d7559SDave Watson 2273c4d7559SDave Watson sg = ctx->partially_sent_record; 2283c4d7559SDave Watson offset = ctx->partially_sent_offset; 2293c4d7559SDave Watson 2303c4d7559SDave Watson ctx->partially_sent_record = NULL; 2313c4d7559SDave Watson return tls_push_sg(sk, ctx, sg, offset, flags); 2323c4d7559SDave Watson } 2333c4d7559SDave Watson 234c5daa6ccSJakub Kicinski void tls_free_partial_record(struct sock *sk, struct tls_context *ctx) 23535b71a34SJakub Kicinski { 23635b71a34SJakub Kicinski struct scatterlist *sg; 23735b71a34SJakub Kicinski 238c5daa6ccSJakub Kicinski for (sg = ctx->partially_sent_record; sg; sg = sg_next(sg)) { 23935b71a34SJakub Kicinski put_page(sg_page(sg)); 24035b71a34SJakub Kicinski sk_mem_uncharge(sk, sg->length); 24135b71a34SJakub Kicinski } 24235b71a34SJakub Kicinski ctx->partially_sent_record = NULL; 24335b71a34SJakub Kicinski } 24435b71a34SJakub Kicinski 2453c4d7559SDave Watson static void tls_write_space(struct sock *sk) 2463c4d7559SDave Watson { 2473c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 2483c4d7559SDave Watson 24967db7cd2SJohn Fastabend /* If in_tcp_sendpages call lower protocol write space handler 25067db7cd2SJohn Fastabend * to ensure we wake up any waiting operations there. For example 25167db7cd2SJohn Fastabend * if do_tcp_sendpages where to call sk_wait_event. 25267db7cd2SJohn Fastabend */ 25367db7cd2SJohn Fastabend if (ctx->in_tcp_sendpages) { 25467db7cd2SJohn Fastabend ctx->sk_write_space(sk); 255c212d2c7SDave Watson return; 25667db7cd2SJohn Fastabend } 257c212d2c7SDave Watson 2587463d3a2SBoris Pismenny #ifdef CONFIG_TLS_DEVICE 2597463d3a2SBoris Pismenny if (ctx->tx_conf == TLS_HW) 2607463d3a2SBoris Pismenny tls_device_write_space(sk, ctx); 2617463d3a2SBoris Pismenny else 2627463d3a2SBoris Pismenny #endif 2637463d3a2SBoris Pismenny tls_sw_write_space(sk, ctx); 2644504ab0eSVakul Garg 2654504ab0eSVakul Garg ctx->sk_write_space(sk); 2663c4d7559SDave Watson } 2673c4d7559SDave Watson 26815a7dea7SJakub Kicinski /** 26915a7dea7SJakub Kicinski * tls_ctx_free() - free TLS ULP context 27015a7dea7SJakub Kicinski * @sk: socket to with @ctx is attached 27115a7dea7SJakub Kicinski * @ctx: TLS context structure 27215a7dea7SJakub Kicinski * 27315a7dea7SJakub Kicinski * Free TLS context. If @sk is %NULL caller guarantees that the socket 27415a7dea7SJakub Kicinski * to which @ctx was attached has no outstanding references. 27515a7dea7SJakub Kicinski */ 27615a7dea7SJakub Kicinski void tls_ctx_free(struct sock *sk, struct tls_context *ctx) 27786029d10SSabrina Dubroca { 27886029d10SSabrina Dubroca if (!ctx) 27986029d10SSabrina Dubroca return; 28086029d10SSabrina Dubroca 28186029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_send, sizeof(ctx->crypto_send)); 28286029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_recv, sizeof(ctx->crypto_recv)); 28379ffe608SJakub Kicinski mutex_destroy(&ctx->tx_lock); 28415a7dea7SJakub Kicinski 28515a7dea7SJakub Kicinski if (sk) 28615a7dea7SJakub Kicinski kfree_rcu(ctx, rcu); 28715a7dea7SJakub Kicinski else 28886029d10SSabrina Dubroca kfree(ctx); 28986029d10SSabrina Dubroca } 29086029d10SSabrina Dubroca 291313ab004SJohn Fastabend static void tls_sk_proto_cleanup(struct sock *sk, 292313ab004SJohn Fastabend struct tls_context *ctx, long timeo) 2933c4d7559SDave Watson { 2949354544cSDirk van der Merwe if (unlikely(sk->sk_write_pending) && 2959354544cSDirk van der Merwe !wait_on_pending_writer(sk, &timeo)) 2963c4d7559SDave Watson tls_handle_open_record(sk, 0); 2973c4d7559SDave Watson 298f66de3eeSBoris Pismenny /* We need these for tls_sw_fallback handling of other packets */ 299f66de3eeSBoris Pismenny if (ctx->tx_conf == TLS_SW) { 300dbe42559SDave Watson kfree(ctx->tx.rec_seq); 301dbe42559SDave Watson kfree(ctx->tx.iv); 302313ab004SJohn Fastabend tls_sw_release_resources_tx(sk); 303b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXSW); 30435b71a34SJakub Kicinski } else if (ctx->tx_conf == TLS_HW) { 30535b71a34SJakub Kicinski tls_device_free_resources_tx(sk); 306b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXDEVICE); 307f66de3eeSBoris Pismenny } 308f66de3eeSBoris Pismenny 309b32fd3ccSJakub Kicinski if (ctx->rx_conf == TLS_SW) { 310313ab004SJohn Fastabend tls_sw_release_resources_rx(sk); 311b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXSW); 312b32fd3ccSJakub Kicinski } else if (ctx->rx_conf == TLS_HW) { 3134799ac81SBoris Pismenny tls_device_offload_cleanup_rx(sk); 314b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXDEVICE); 315b32fd3ccSJakub Kicinski } 316e8f69799SIlya Lesokhin } 317e8f69799SIlya Lesokhin 318313ab004SJohn Fastabend static void tls_sk_proto_close(struct sock *sk, long timeout) 319313ab004SJohn Fastabend { 32095fa1454SJohn Fastabend struct inet_connection_sock *icsk = inet_csk(sk); 321313ab004SJohn Fastabend struct tls_context *ctx = tls_get_ctx(sk); 322313ab004SJohn Fastabend long timeo = sock_sndtimeo(sk, 0); 323313ab004SJohn Fastabend bool free_ctx; 324313ab004SJohn Fastabend 325313ab004SJohn Fastabend if (ctx->tx_conf == TLS_SW) 326313ab004SJohn Fastabend tls_sw_cancel_work_tx(ctx); 327313ab004SJohn Fastabend 328313ab004SJohn Fastabend lock_sock(sk); 329313ab004SJohn Fastabend free_ctx = ctx->tx_conf != TLS_HW && ctx->rx_conf != TLS_HW; 330313ab004SJohn Fastabend 331313ab004SJohn Fastabend if (ctx->tx_conf != TLS_BASE || ctx->rx_conf != TLS_BASE) 332313ab004SJohn Fastabend tls_sk_proto_cleanup(sk, ctx, timeo); 333313ab004SJohn Fastabend 33495fa1454SJohn Fastabend write_lock_bh(&sk->sk_callback_lock); 33595fa1454SJohn Fastabend if (free_ctx) 33615a7dea7SJakub Kicinski rcu_assign_pointer(icsk->icsk_ulp_data, NULL); 337d5bee737SJakub Sitnicki WRITE_ONCE(sk->sk_prot, ctx->sk_proto); 338d85f0177SJohn Fastabend if (sk->sk_write_space == tls_write_space) 33957c722e9SJakub Kicinski sk->sk_write_space = ctx->sk_write_space; 34095fa1454SJohn Fastabend write_unlock_bh(&sk->sk_callback_lock); 3413c4d7559SDave Watson release_sock(sk); 342313ab004SJohn Fastabend if (ctx->tx_conf == TLS_SW) 343313ab004SJohn Fastabend tls_sw_free_ctx_tx(ctx); 344313ab004SJohn Fastabend if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) 345313ab004SJohn Fastabend tls_sw_strparser_done(ctx); 346313ab004SJohn Fastabend if (ctx->rx_conf == TLS_SW) 347313ab004SJohn Fastabend tls_sw_free_ctx_rx(ctx); 348be7bbea1SJakub Kicinski ctx->sk_proto->close(sk, timeout); 349313ab004SJohn Fastabend 35098f0a395SEric Dumazet if (free_ctx) 35115a7dea7SJakub Kicinski tls_ctx_free(sk, ctx); 3523c4d7559SDave Watson } 3533c4d7559SDave Watson 354ffa81fa4SYutaro Hayakawa static int do_tls_getsockopt_conf(struct sock *sk, char __user *optval, 355ffa81fa4SYutaro Hayakawa int __user *optlen, int tx) 3563c4d7559SDave Watson { 3573c4d7559SDave Watson int rc = 0; 3583c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 3593c4d7559SDave Watson struct tls_crypto_info *crypto_info; 360ffa81fa4SYutaro Hayakawa struct cipher_context *cctx; 3613c4d7559SDave Watson int len; 3623c4d7559SDave Watson 3633c4d7559SDave Watson if (get_user(len, optlen)) 3643c4d7559SDave Watson return -EFAULT; 3653c4d7559SDave Watson 3663c4d7559SDave Watson if (!optval || (len < sizeof(*crypto_info))) { 3673c4d7559SDave Watson rc = -EINVAL; 3683c4d7559SDave Watson goto out; 3693c4d7559SDave Watson } 3703c4d7559SDave Watson 3713c4d7559SDave Watson if (!ctx) { 3723c4d7559SDave Watson rc = -EBUSY; 3733c4d7559SDave Watson goto out; 3743c4d7559SDave Watson } 3753c4d7559SDave Watson 3763c4d7559SDave Watson /* get user crypto info */ 377ffa81fa4SYutaro Hayakawa if (tx) { 37886029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 379ffa81fa4SYutaro Hayakawa cctx = &ctx->tx; 380ffa81fa4SYutaro Hayakawa } else { 381ffa81fa4SYutaro Hayakawa crypto_info = &ctx->crypto_recv.info; 382ffa81fa4SYutaro Hayakawa cctx = &ctx->rx; 383ffa81fa4SYutaro Hayakawa } 3843c4d7559SDave Watson 3853c4d7559SDave Watson if (!TLS_CRYPTO_INFO_READY(crypto_info)) { 3863c4d7559SDave Watson rc = -EBUSY; 3873c4d7559SDave Watson goto out; 3883c4d7559SDave Watson } 3893c4d7559SDave Watson 3905a3b886cSMatthias Rosenfelder if (len == sizeof(*crypto_info)) { 391ac55cd61SDan Carpenter if (copy_to_user(optval, crypto_info, sizeof(*crypto_info))) 392ac55cd61SDan Carpenter rc = -EFAULT; 3933c4d7559SDave Watson goto out; 3943c4d7559SDave Watson } 3953c4d7559SDave Watson 3963c4d7559SDave Watson switch (crypto_info->cipher_type) { 3973c4d7559SDave Watson case TLS_CIPHER_AES_GCM_128: { 3983c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128 * 3993c4d7559SDave Watson crypto_info_aes_gcm_128 = 4003c4d7559SDave Watson container_of(crypto_info, 4013c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128, 4023c4d7559SDave Watson info); 4033c4d7559SDave Watson 4043c4d7559SDave Watson if (len != sizeof(*crypto_info_aes_gcm_128)) { 4053c4d7559SDave Watson rc = -EINVAL; 4063c4d7559SDave Watson goto out; 4073c4d7559SDave Watson } 4083c4d7559SDave Watson lock_sock(sk); 409a1dfa681SBoris Pismenny memcpy(crypto_info_aes_gcm_128->iv, 410ffa81fa4SYutaro Hayakawa cctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, 4113c4d7559SDave Watson TLS_CIPHER_AES_GCM_128_IV_SIZE); 412ffa81fa4SYutaro Hayakawa memcpy(crypto_info_aes_gcm_128->rec_seq, cctx->rec_seq, 413c410c196SBoris Pismenny TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE); 4143c4d7559SDave Watson release_sock(sk); 415ac55cd61SDan Carpenter if (copy_to_user(optval, 4163c4d7559SDave Watson crypto_info_aes_gcm_128, 417ac55cd61SDan Carpenter sizeof(*crypto_info_aes_gcm_128))) 418ac55cd61SDan Carpenter rc = -EFAULT; 4193c4d7559SDave Watson break; 4203c4d7559SDave Watson } 421fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_256: { 422fb99bce7SDave Watson struct tls12_crypto_info_aes_gcm_256 * 423fb99bce7SDave Watson crypto_info_aes_gcm_256 = 424fb99bce7SDave Watson container_of(crypto_info, 425fb99bce7SDave Watson struct tls12_crypto_info_aes_gcm_256, 426fb99bce7SDave Watson info); 427fb99bce7SDave Watson 428fb99bce7SDave Watson if (len != sizeof(*crypto_info_aes_gcm_256)) { 429fb99bce7SDave Watson rc = -EINVAL; 430fb99bce7SDave Watson goto out; 431fb99bce7SDave Watson } 432fb99bce7SDave Watson lock_sock(sk); 433fb99bce7SDave Watson memcpy(crypto_info_aes_gcm_256->iv, 434ffa81fa4SYutaro Hayakawa cctx->iv + TLS_CIPHER_AES_GCM_256_SALT_SIZE, 435fb99bce7SDave Watson TLS_CIPHER_AES_GCM_256_IV_SIZE); 436ffa81fa4SYutaro Hayakawa memcpy(crypto_info_aes_gcm_256->rec_seq, cctx->rec_seq, 437fb99bce7SDave Watson TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE); 438fb99bce7SDave Watson release_sock(sk); 439fb99bce7SDave Watson if (copy_to_user(optval, 440fb99bce7SDave Watson crypto_info_aes_gcm_256, 441fb99bce7SDave Watson sizeof(*crypto_info_aes_gcm_256))) 442fb99bce7SDave Watson rc = -EFAULT; 443fb99bce7SDave Watson break; 444fb99bce7SDave Watson } 4453fb59a5dSTianjia Zhang case TLS_CIPHER_AES_CCM_128: { 4463fb59a5dSTianjia Zhang struct tls12_crypto_info_aes_ccm_128 *aes_ccm_128 = 4473fb59a5dSTianjia Zhang container_of(crypto_info, 4483fb59a5dSTianjia Zhang struct tls12_crypto_info_aes_ccm_128, info); 4493fb59a5dSTianjia Zhang 4503fb59a5dSTianjia Zhang if (len != sizeof(*aes_ccm_128)) { 4513fb59a5dSTianjia Zhang rc = -EINVAL; 4523fb59a5dSTianjia Zhang goto out; 4533fb59a5dSTianjia Zhang } 4543fb59a5dSTianjia Zhang lock_sock(sk); 4553fb59a5dSTianjia Zhang memcpy(aes_ccm_128->iv, 4563fb59a5dSTianjia Zhang cctx->iv + TLS_CIPHER_AES_CCM_128_SALT_SIZE, 4573fb59a5dSTianjia Zhang TLS_CIPHER_AES_CCM_128_IV_SIZE); 4583fb59a5dSTianjia Zhang memcpy(aes_ccm_128->rec_seq, cctx->rec_seq, 4593fb59a5dSTianjia Zhang TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE); 4603fb59a5dSTianjia Zhang release_sock(sk); 4613fb59a5dSTianjia Zhang if (copy_to_user(optval, aes_ccm_128, sizeof(*aes_ccm_128))) 4623fb59a5dSTianjia Zhang rc = -EFAULT; 4633fb59a5dSTianjia Zhang break; 4643fb59a5dSTianjia Zhang } 4653fb59a5dSTianjia Zhang case TLS_CIPHER_CHACHA20_POLY1305: { 4663fb59a5dSTianjia Zhang struct tls12_crypto_info_chacha20_poly1305 *chacha20_poly1305 = 4673fb59a5dSTianjia Zhang container_of(crypto_info, 4683fb59a5dSTianjia Zhang struct tls12_crypto_info_chacha20_poly1305, 4693fb59a5dSTianjia Zhang info); 4703fb59a5dSTianjia Zhang 4713fb59a5dSTianjia Zhang if (len != sizeof(*chacha20_poly1305)) { 4723fb59a5dSTianjia Zhang rc = -EINVAL; 4733fb59a5dSTianjia Zhang goto out; 4743fb59a5dSTianjia Zhang } 4753fb59a5dSTianjia Zhang lock_sock(sk); 4763fb59a5dSTianjia Zhang memcpy(chacha20_poly1305->iv, 4773fb59a5dSTianjia Zhang cctx->iv + TLS_CIPHER_CHACHA20_POLY1305_SALT_SIZE, 4783fb59a5dSTianjia Zhang TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE); 4793fb59a5dSTianjia Zhang memcpy(chacha20_poly1305->rec_seq, cctx->rec_seq, 4803fb59a5dSTianjia Zhang TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE); 4813fb59a5dSTianjia Zhang release_sock(sk); 4823fb59a5dSTianjia Zhang if (copy_to_user(optval, chacha20_poly1305, 4833fb59a5dSTianjia Zhang sizeof(*chacha20_poly1305))) 4843fb59a5dSTianjia Zhang rc = -EFAULT; 4853fb59a5dSTianjia Zhang break; 4863fb59a5dSTianjia Zhang } 487227b9644STianjia Zhang case TLS_CIPHER_SM4_GCM: { 488227b9644STianjia Zhang struct tls12_crypto_info_sm4_gcm *sm4_gcm_info = 489227b9644STianjia Zhang container_of(crypto_info, 490227b9644STianjia Zhang struct tls12_crypto_info_sm4_gcm, info); 491227b9644STianjia Zhang 492227b9644STianjia Zhang if (len != sizeof(*sm4_gcm_info)) { 493227b9644STianjia Zhang rc = -EINVAL; 494227b9644STianjia Zhang goto out; 495227b9644STianjia Zhang } 496227b9644STianjia Zhang lock_sock(sk); 497227b9644STianjia Zhang memcpy(sm4_gcm_info->iv, 498227b9644STianjia Zhang cctx->iv + TLS_CIPHER_SM4_GCM_SALT_SIZE, 499227b9644STianjia Zhang TLS_CIPHER_SM4_GCM_IV_SIZE); 500227b9644STianjia Zhang memcpy(sm4_gcm_info->rec_seq, cctx->rec_seq, 501227b9644STianjia Zhang TLS_CIPHER_SM4_GCM_REC_SEQ_SIZE); 502227b9644STianjia Zhang release_sock(sk); 503227b9644STianjia Zhang if (copy_to_user(optval, sm4_gcm_info, sizeof(*sm4_gcm_info))) 504227b9644STianjia Zhang rc = -EFAULT; 505227b9644STianjia Zhang break; 506227b9644STianjia Zhang } 507227b9644STianjia Zhang case TLS_CIPHER_SM4_CCM: { 508227b9644STianjia Zhang struct tls12_crypto_info_sm4_ccm *sm4_ccm_info = 509227b9644STianjia Zhang container_of(crypto_info, 510227b9644STianjia Zhang struct tls12_crypto_info_sm4_ccm, info); 511227b9644STianjia Zhang 512227b9644STianjia Zhang if (len != sizeof(*sm4_ccm_info)) { 513227b9644STianjia Zhang rc = -EINVAL; 514227b9644STianjia Zhang goto out; 515227b9644STianjia Zhang } 516227b9644STianjia Zhang lock_sock(sk); 517227b9644STianjia Zhang memcpy(sm4_ccm_info->iv, 518227b9644STianjia Zhang cctx->iv + TLS_CIPHER_SM4_CCM_SALT_SIZE, 519227b9644STianjia Zhang TLS_CIPHER_SM4_CCM_IV_SIZE); 520227b9644STianjia Zhang memcpy(sm4_ccm_info->rec_seq, cctx->rec_seq, 521227b9644STianjia Zhang TLS_CIPHER_SM4_CCM_REC_SEQ_SIZE); 522227b9644STianjia Zhang release_sock(sk); 523227b9644STianjia Zhang if (copy_to_user(optval, sm4_ccm_info, sizeof(*sm4_ccm_info))) 524227b9644STianjia Zhang rc = -EFAULT; 525227b9644STianjia Zhang break; 526227b9644STianjia Zhang } 5273c4d7559SDave Watson default: 5283c4d7559SDave Watson rc = -EINVAL; 5293c4d7559SDave Watson } 5303c4d7559SDave Watson 5313c4d7559SDave Watson out: 5323c4d7559SDave Watson return rc; 5333c4d7559SDave Watson } 5343c4d7559SDave Watson 535c1318b39SBoris Pismenny static int do_tls_getsockopt_tx_zc(struct sock *sk, char __user *optval, 536c1318b39SBoris Pismenny int __user *optlen) 537c1318b39SBoris Pismenny { 538c1318b39SBoris Pismenny struct tls_context *ctx = tls_get_ctx(sk); 539c1318b39SBoris Pismenny unsigned int value; 540c1318b39SBoris Pismenny int len; 541c1318b39SBoris Pismenny 542c1318b39SBoris Pismenny if (get_user(len, optlen)) 543c1318b39SBoris Pismenny return -EFAULT; 544c1318b39SBoris Pismenny 545c1318b39SBoris Pismenny if (len != sizeof(value)) 546c1318b39SBoris Pismenny return -EINVAL; 547c1318b39SBoris Pismenny 548c1318b39SBoris Pismenny value = ctx->zerocopy_sendfile; 549c1318b39SBoris Pismenny if (copy_to_user(optval, &value, sizeof(value))) 550c1318b39SBoris Pismenny return -EFAULT; 551c1318b39SBoris Pismenny 552c1318b39SBoris Pismenny return 0; 553c1318b39SBoris Pismenny } 554c1318b39SBoris Pismenny 55588527790SJakub Kicinski static int do_tls_getsockopt_no_pad(struct sock *sk, char __user *optval, 55688527790SJakub Kicinski int __user *optlen) 55788527790SJakub Kicinski { 55888527790SJakub Kicinski struct tls_context *ctx = tls_get_ctx(sk); 55957128e98SJakub Kicinski int value, len; 56088527790SJakub Kicinski 56188527790SJakub Kicinski if (ctx->prot_info.version != TLS_1_3_VERSION) 56288527790SJakub Kicinski return -EINVAL; 56388527790SJakub Kicinski 56488527790SJakub Kicinski if (get_user(len, optlen)) 56588527790SJakub Kicinski return -EFAULT; 56688527790SJakub Kicinski if (len < sizeof(value)) 56788527790SJakub Kicinski return -EINVAL; 56888527790SJakub Kicinski 56988527790SJakub Kicinski lock_sock(sk); 57057128e98SJakub Kicinski value = -EINVAL; 57188527790SJakub Kicinski if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) 57288527790SJakub Kicinski value = ctx->rx_no_pad; 57388527790SJakub Kicinski release_sock(sk); 57457128e98SJakub Kicinski if (value < 0) 57557128e98SJakub Kicinski return value; 57688527790SJakub Kicinski 57788527790SJakub Kicinski if (put_user(sizeof(value), optlen)) 57888527790SJakub Kicinski return -EFAULT; 57988527790SJakub Kicinski if (copy_to_user(optval, &value, sizeof(value))) 58088527790SJakub Kicinski return -EFAULT; 58188527790SJakub Kicinski 58288527790SJakub Kicinski return 0; 58388527790SJakub Kicinski } 58488527790SJakub Kicinski 5853c4d7559SDave Watson static int do_tls_getsockopt(struct sock *sk, int optname, 5863c4d7559SDave Watson char __user *optval, int __user *optlen) 5873c4d7559SDave Watson { 5883c4d7559SDave Watson int rc = 0; 5893c4d7559SDave Watson 5903c4d7559SDave Watson switch (optname) { 5913c4d7559SDave Watson case TLS_TX: 592ffa81fa4SYutaro Hayakawa case TLS_RX: 593ffa81fa4SYutaro Hayakawa rc = do_tls_getsockopt_conf(sk, optval, optlen, 594ffa81fa4SYutaro Hayakawa optname == TLS_TX); 5953c4d7559SDave Watson break; 596b489a6e5SMaxim Mikityanskiy case TLS_TX_ZEROCOPY_RO: 597c1318b39SBoris Pismenny rc = do_tls_getsockopt_tx_zc(sk, optval, optlen); 598c1318b39SBoris Pismenny break; 59988527790SJakub Kicinski case TLS_RX_EXPECT_NO_PAD: 60088527790SJakub Kicinski rc = do_tls_getsockopt_no_pad(sk, optval, optlen); 60188527790SJakub Kicinski break; 6023c4d7559SDave Watson default: 6033c4d7559SDave Watson rc = -ENOPROTOOPT; 6043c4d7559SDave Watson break; 6053c4d7559SDave Watson } 6063c4d7559SDave Watson return rc; 6073c4d7559SDave Watson } 6083c4d7559SDave Watson 6093c4d7559SDave Watson static int tls_getsockopt(struct sock *sk, int level, int optname, 6103c4d7559SDave Watson char __user *optval, int __user *optlen) 6113c4d7559SDave Watson { 6123c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 6133c4d7559SDave Watson 6143c4d7559SDave Watson if (level != SOL_TLS) 615be7bbea1SJakub Kicinski return ctx->sk_proto->getsockopt(sk, level, 616be7bbea1SJakub Kicinski optname, optval, optlen); 6173c4d7559SDave Watson 6183c4d7559SDave Watson return do_tls_getsockopt(sk, optname, optval, optlen); 6193c4d7559SDave Watson } 6203c4d7559SDave Watson 621a7b75c5aSChristoph Hellwig static int do_tls_setsockopt_conf(struct sock *sk, sockptr_t optval, 622c46234ebSDave Watson unsigned int optlen, int tx) 6233c4d7559SDave Watson { 624196c31b4SIlya Lesokhin struct tls_crypto_info *crypto_info; 6254509de14SVakul Garg struct tls_crypto_info *alt_crypto_info; 6263c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 627fb99bce7SDave Watson size_t optsize; 6283c4d7559SDave Watson int rc = 0; 62958371585SDave Watson int conf; 6303c4d7559SDave Watson 6311ddcbfbfSZiyang Xuan if (sockptr_is_null(optval) || (optlen < sizeof(*crypto_info))) 6321ddcbfbfSZiyang Xuan return -EINVAL; 6333c4d7559SDave Watson 6344509de14SVakul Garg if (tx) { 63586029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 6364509de14SVakul Garg alt_crypto_info = &ctx->crypto_recv.info; 6374509de14SVakul Garg } else { 63886029d10SSabrina Dubroca crypto_info = &ctx->crypto_recv.info; 6394509de14SVakul Garg alt_crypto_info = &ctx->crypto_send.info; 6404509de14SVakul Garg } 641c46234ebSDave Watson 642196c31b4SIlya Lesokhin /* Currently we don't support set crypto info more than one time */ 6431ddcbfbfSZiyang Xuan if (TLS_CRYPTO_INFO_READY(crypto_info)) 6441ddcbfbfSZiyang Xuan return -EBUSY; 645196c31b4SIlya Lesokhin 646a7b75c5aSChristoph Hellwig rc = copy_from_sockptr(crypto_info, optval, sizeof(*crypto_info)); 6473c4d7559SDave Watson if (rc) { 6483c4d7559SDave Watson rc = -EFAULT; 649257082e6SBoris Pismenny goto err_crypto_info; 6503c4d7559SDave Watson } 6513c4d7559SDave Watson 6523c4d7559SDave Watson /* check version */ 653130b392cSDave Watson if (crypto_info->version != TLS_1_2_VERSION && 654130b392cSDave Watson crypto_info->version != TLS_1_3_VERSION) { 6554a5cdc60SValentin Vidic rc = -EINVAL; 656196c31b4SIlya Lesokhin goto err_crypto_info; 6573c4d7559SDave Watson } 6583c4d7559SDave Watson 6594509de14SVakul Garg /* Ensure that TLS version and ciphers are same in both directions */ 6604509de14SVakul Garg if (TLS_CRYPTO_INFO_READY(alt_crypto_info)) { 6614509de14SVakul Garg if (alt_crypto_info->version != crypto_info->version || 6624509de14SVakul Garg alt_crypto_info->cipher_type != crypto_info->cipher_type) { 6634509de14SVakul Garg rc = -EINVAL; 6644509de14SVakul Garg goto err_crypto_info; 6654509de14SVakul Garg } 6664509de14SVakul Garg } 6674509de14SVakul Garg 668196c31b4SIlya Lesokhin switch (crypto_info->cipher_type) { 669fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_128: 670f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_gcm_128); 671f295b3aeSVakul Garg break; 672fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_256: { 673f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_gcm_256); 674f295b3aeSVakul Garg break; 675f295b3aeSVakul Garg } 676f295b3aeSVakul Garg case TLS_CIPHER_AES_CCM_128: 677f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_ccm_128); 678f295b3aeSVakul Garg break; 67974ea6106SVadim Fedorenko case TLS_CIPHER_CHACHA20_POLY1305: 68074ea6106SVadim Fedorenko optsize = sizeof(struct tls12_crypto_info_chacha20_poly1305); 68174ea6106SVadim Fedorenko break; 682227b9644STianjia Zhang case TLS_CIPHER_SM4_GCM: 683227b9644STianjia Zhang optsize = sizeof(struct tls12_crypto_info_sm4_gcm); 684227b9644STianjia Zhang break; 685227b9644STianjia Zhang case TLS_CIPHER_SM4_CCM: 686227b9644STianjia Zhang optsize = sizeof(struct tls12_crypto_info_sm4_ccm); 687227b9644STianjia Zhang break; 688f295b3aeSVakul Garg default: 689f295b3aeSVakul Garg rc = -EINVAL; 690f295b3aeSVakul Garg goto err_crypto_info; 691f295b3aeSVakul Garg } 692f295b3aeSVakul Garg 693fb99bce7SDave Watson if (optlen != optsize) { 6943c4d7559SDave Watson rc = -EINVAL; 6956db959c8SSabrina Dubroca goto err_crypto_info; 6963c4d7559SDave Watson } 697f295b3aeSVakul Garg 698d3c48151SChristoph Hellwig rc = copy_from_sockptr_offset(crypto_info + 1, optval, 699d3c48151SChristoph Hellwig sizeof(*crypto_info), 700196c31b4SIlya Lesokhin optlen - sizeof(*crypto_info)); 7013c4d7559SDave Watson if (rc) { 7023c4d7559SDave Watson rc = -EFAULT; 7033c4d7559SDave Watson goto err_crypto_info; 7043c4d7559SDave Watson } 7053c4d7559SDave Watson 706c46234ebSDave Watson if (tx) { 707e8f69799SIlya Lesokhin rc = tls_set_device_offload(sk, ctx); 708e8f69799SIlya Lesokhin conf = TLS_HW; 709b32fd3ccSJakub Kicinski if (!rc) { 710b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSTXDEVICE); 711b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXDEVICE); 712b32fd3ccSJakub Kicinski } else { 713c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 1); 714318892acSJakub Kicinski if (rc) 715318892acSJakub Kicinski goto err_crypto_info; 716b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSTXSW); 717b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXSW); 718f66de3eeSBoris Pismenny conf = TLS_SW; 719e8f69799SIlya Lesokhin } 720c46234ebSDave Watson } else { 7214799ac81SBoris Pismenny rc = tls_set_device_offload_rx(sk, ctx); 7224799ac81SBoris Pismenny conf = TLS_HW; 723b32fd3ccSJakub Kicinski if (!rc) { 724b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXDEVICE); 725b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXDEVICE); 726b32fd3ccSJakub Kicinski } else { 727c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 0); 728318892acSJakub Kicinski if (rc) 729318892acSJakub Kicinski goto err_crypto_info; 730b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXSW); 731b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXSW); 732f66de3eeSBoris Pismenny conf = TLS_SW; 733c46234ebSDave Watson } 734313ab004SJohn Fastabend tls_sw_strparser_arm(sk, ctx); 7354799ac81SBoris Pismenny } 736c46234ebSDave Watson 737f66de3eeSBoris Pismenny if (tx) 738f66de3eeSBoris Pismenny ctx->tx_conf = conf; 739f66de3eeSBoris Pismenny else 740f66de3eeSBoris Pismenny ctx->rx_conf = conf; 7416d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 742c46234ebSDave Watson if (tx) { 743ee181e52SIlya Lesokhin ctx->sk_write_space = sk->sk_write_space; 744ee181e52SIlya Lesokhin sk->sk_write_space = tls_write_space; 74584c61fe1SJakub Kicinski } else { 74684c61fe1SJakub Kicinski struct tls_sw_context_rx *rx_ctx = tls_sw_ctx_rx(ctx); 74784c61fe1SJakub Kicinski 74884c61fe1SJakub Kicinski tls_strp_check_rcv(&rx_ctx->strp); 749c46234ebSDave Watson } 7501ddcbfbfSZiyang Xuan return 0; 7513c4d7559SDave Watson 7523c4d7559SDave Watson err_crypto_info: 753c844eb46SSabrina Dubroca memzero_explicit(crypto_info, sizeof(union tls_crypto_context)); 7543c4d7559SDave Watson return rc; 7553c4d7559SDave Watson } 7563c4d7559SDave Watson 757c1318b39SBoris Pismenny static int do_tls_setsockopt_tx_zc(struct sock *sk, sockptr_t optval, 758c1318b39SBoris Pismenny unsigned int optlen) 759c1318b39SBoris Pismenny { 760c1318b39SBoris Pismenny struct tls_context *ctx = tls_get_ctx(sk); 761c1318b39SBoris Pismenny unsigned int value; 762c1318b39SBoris Pismenny 763c1318b39SBoris Pismenny if (sockptr_is_null(optval) || optlen != sizeof(value)) 764c1318b39SBoris Pismenny return -EINVAL; 765c1318b39SBoris Pismenny 766c1318b39SBoris Pismenny if (copy_from_sockptr(&value, optval, sizeof(value))) 767c1318b39SBoris Pismenny return -EFAULT; 768c1318b39SBoris Pismenny 769c1318b39SBoris Pismenny if (value > 1) 770c1318b39SBoris Pismenny return -EINVAL; 771c1318b39SBoris Pismenny 772c1318b39SBoris Pismenny ctx->zerocopy_sendfile = value; 773c1318b39SBoris Pismenny 774c1318b39SBoris Pismenny return 0; 775c1318b39SBoris Pismenny } 776c1318b39SBoris Pismenny 77788527790SJakub Kicinski static int do_tls_setsockopt_no_pad(struct sock *sk, sockptr_t optval, 77888527790SJakub Kicinski unsigned int optlen) 77988527790SJakub Kicinski { 78088527790SJakub Kicinski struct tls_context *ctx = tls_get_ctx(sk); 78188527790SJakub Kicinski u32 val; 78288527790SJakub Kicinski int rc; 78388527790SJakub Kicinski 78488527790SJakub Kicinski if (ctx->prot_info.version != TLS_1_3_VERSION || 78588527790SJakub Kicinski sockptr_is_null(optval) || optlen < sizeof(val)) 78688527790SJakub Kicinski return -EINVAL; 78788527790SJakub Kicinski 78888527790SJakub Kicinski rc = copy_from_sockptr(&val, optval, sizeof(val)); 78988527790SJakub Kicinski if (rc) 79088527790SJakub Kicinski return -EFAULT; 79188527790SJakub Kicinski if (val > 1) 79288527790SJakub Kicinski return -EINVAL; 79388527790SJakub Kicinski rc = check_zeroed_sockptr(optval, sizeof(val), optlen - sizeof(val)); 79488527790SJakub Kicinski if (rc < 1) 79588527790SJakub Kicinski return rc == 0 ? -EINVAL : rc; 79688527790SJakub Kicinski 79788527790SJakub Kicinski lock_sock(sk); 79888527790SJakub Kicinski rc = -EINVAL; 79988527790SJakub Kicinski if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) { 80088527790SJakub Kicinski ctx->rx_no_pad = val; 80188527790SJakub Kicinski tls_update_rx_zc_capable(ctx); 80288527790SJakub Kicinski rc = 0; 80388527790SJakub Kicinski } 80488527790SJakub Kicinski release_sock(sk); 80588527790SJakub Kicinski 80688527790SJakub Kicinski return rc; 80788527790SJakub Kicinski } 80888527790SJakub Kicinski 809a7b75c5aSChristoph Hellwig static int do_tls_setsockopt(struct sock *sk, int optname, sockptr_t optval, 810a7b75c5aSChristoph Hellwig unsigned int optlen) 8113c4d7559SDave Watson { 8123c4d7559SDave Watson int rc = 0; 8133c4d7559SDave Watson 8143c4d7559SDave Watson switch (optname) { 8153c4d7559SDave Watson case TLS_TX: 816c46234ebSDave Watson case TLS_RX: 8173c4d7559SDave Watson lock_sock(sk); 818c46234ebSDave Watson rc = do_tls_setsockopt_conf(sk, optval, optlen, 819c46234ebSDave Watson optname == TLS_TX); 8203c4d7559SDave Watson release_sock(sk); 8213c4d7559SDave Watson break; 822b489a6e5SMaxim Mikityanskiy case TLS_TX_ZEROCOPY_RO: 823c1318b39SBoris Pismenny lock_sock(sk); 824c1318b39SBoris Pismenny rc = do_tls_setsockopt_tx_zc(sk, optval, optlen); 825c1318b39SBoris Pismenny release_sock(sk); 826c1318b39SBoris Pismenny break; 82788527790SJakub Kicinski case TLS_RX_EXPECT_NO_PAD: 82888527790SJakub Kicinski rc = do_tls_setsockopt_no_pad(sk, optval, optlen); 82988527790SJakub Kicinski break; 8303c4d7559SDave Watson default: 8313c4d7559SDave Watson rc = -ENOPROTOOPT; 8323c4d7559SDave Watson break; 8333c4d7559SDave Watson } 8343c4d7559SDave Watson return rc; 8353c4d7559SDave Watson } 8363c4d7559SDave Watson 8373c4d7559SDave Watson static int tls_setsockopt(struct sock *sk, int level, int optname, 838a7b75c5aSChristoph Hellwig sockptr_t optval, unsigned int optlen) 8393c4d7559SDave Watson { 8403c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 8413c4d7559SDave Watson 8423c4d7559SDave Watson if (level != SOL_TLS) 843be7bbea1SJakub Kicinski return ctx->sk_proto->setsockopt(sk, level, optname, optval, 844be7bbea1SJakub Kicinski optlen); 8453c4d7559SDave Watson 8463c4d7559SDave Watson return do_tls_setsockopt(sk, optname, optval, optlen); 8473c4d7559SDave Watson } 8483c4d7559SDave Watson 84908700dabSJakub Kicinski struct tls_context *tls_ctx_create(struct sock *sk) 850dd0bed16SAtul Gupta { 851dd0bed16SAtul Gupta struct inet_connection_sock *icsk = inet_csk(sk); 852dd0bed16SAtul Gupta struct tls_context *ctx; 853dd0bed16SAtul Gupta 854c6ec179aSGanesh Goudar ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC); 855dd0bed16SAtul Gupta if (!ctx) 856dd0bed16SAtul Gupta return NULL; 857dd0bed16SAtul Gupta 85879ffe608SJakub Kicinski mutex_init(&ctx->tx_lock); 85915a7dea7SJakub Kicinski rcu_assign_pointer(icsk->icsk_ulp_data, ctx); 860d5bee737SJakub Sitnicki ctx->sk_proto = READ_ONCE(sk->sk_prot); 861c55dcdd4SMaxim Mikityanskiy ctx->sk = sk; 862dd0bed16SAtul Gupta return ctx; 863dd0bed16SAtul Gupta } 864dd0bed16SAtul Gupta 865f3911f73SJakub Kicinski static void build_proto_ops(struct proto_ops ops[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 866f3911f73SJakub Kicinski const struct proto_ops *base) 867f3911f73SJakub Kicinski { 868f3911f73SJakub Kicinski ops[TLS_BASE][TLS_BASE] = *base; 869f3911f73SJakub Kicinski 870f3911f73SJakub Kicinski ops[TLS_SW ][TLS_BASE] = ops[TLS_BASE][TLS_BASE]; 871f3911f73SJakub Kicinski ops[TLS_SW ][TLS_BASE].sendpage_locked = tls_sw_sendpage_locked; 872f3911f73SJakub Kicinski 873f3911f73SJakub Kicinski ops[TLS_BASE][TLS_SW ] = ops[TLS_BASE][TLS_BASE]; 874f3911f73SJakub Kicinski ops[TLS_BASE][TLS_SW ].splice_read = tls_sw_splice_read; 875f3911f73SJakub Kicinski 876f3911f73SJakub Kicinski ops[TLS_SW ][TLS_SW ] = ops[TLS_SW ][TLS_BASE]; 877f3911f73SJakub Kicinski ops[TLS_SW ][TLS_SW ].splice_read = tls_sw_splice_read; 878f3911f73SJakub Kicinski 879f3911f73SJakub Kicinski #ifdef CONFIG_TLS_DEVICE 880f3911f73SJakub Kicinski ops[TLS_HW ][TLS_BASE] = ops[TLS_BASE][TLS_BASE]; 881f3911f73SJakub Kicinski ops[TLS_HW ][TLS_BASE].sendpage_locked = NULL; 882f3911f73SJakub Kicinski 883f3911f73SJakub Kicinski ops[TLS_HW ][TLS_SW ] = ops[TLS_BASE][TLS_SW ]; 884f3911f73SJakub Kicinski ops[TLS_HW ][TLS_SW ].sendpage_locked = NULL; 885f3911f73SJakub Kicinski 886f3911f73SJakub Kicinski ops[TLS_BASE][TLS_HW ] = ops[TLS_BASE][TLS_SW ]; 887f3911f73SJakub Kicinski 888f3911f73SJakub Kicinski ops[TLS_SW ][TLS_HW ] = ops[TLS_SW ][TLS_SW ]; 889f3911f73SJakub Kicinski 890f3911f73SJakub Kicinski ops[TLS_HW ][TLS_HW ] = ops[TLS_HW ][TLS_SW ]; 891f3911f73SJakub Kicinski ops[TLS_HW ][TLS_HW ].sendpage_locked = NULL; 892f3911f73SJakub Kicinski #endif 893f3911f73SJakub Kicinski #ifdef CONFIG_TLS_TOE 894f3911f73SJakub Kicinski ops[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 895f3911f73SJakub Kicinski #endif 896f3911f73SJakub Kicinski } 897f3911f73SJakub Kicinski 89863a6b3feSAtul Gupta static void tls_build_proto(struct sock *sk) 89963a6b3feSAtul Gupta { 90063a6b3feSAtul Gupta int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 9019a893949SWill Deacon struct proto *prot = READ_ONCE(sk->sk_prot); 90263a6b3feSAtul Gupta 90363a6b3feSAtul Gupta /* Build IPv6 TLS whenever the address of tcpv6 _prot changes */ 90463a6b3feSAtul Gupta if (ip_ver == TLSV6 && 9055bb4c45dSJakub Sitnicki unlikely(prot != smp_load_acquire(&saved_tcpv6_prot))) { 90663a6b3feSAtul Gupta mutex_lock(&tcpv6_prot_mutex); 9075bb4c45dSJakub Sitnicki if (likely(prot != saved_tcpv6_prot)) { 9085bb4c45dSJakub Sitnicki build_protos(tls_prots[TLSV6], prot); 909f3911f73SJakub Kicinski build_proto_ops(tls_proto_ops[TLSV6], 910f3911f73SJakub Kicinski sk->sk_socket->ops); 9115bb4c45dSJakub Sitnicki smp_store_release(&saved_tcpv6_prot, prot); 91263a6b3feSAtul Gupta } 91363a6b3feSAtul Gupta mutex_unlock(&tcpv6_prot_mutex); 91463a6b3feSAtul Gupta } 91563a6b3feSAtul Gupta 91663a6b3feSAtul Gupta if (ip_ver == TLSV4 && 9175bb4c45dSJakub Sitnicki unlikely(prot != smp_load_acquire(&saved_tcpv4_prot))) { 91863a6b3feSAtul Gupta mutex_lock(&tcpv4_prot_mutex); 9195bb4c45dSJakub Sitnicki if (likely(prot != saved_tcpv4_prot)) { 9205bb4c45dSJakub Sitnicki build_protos(tls_prots[TLSV4], prot); 921f3911f73SJakub Kicinski build_proto_ops(tls_proto_ops[TLSV4], 922f3911f73SJakub Kicinski sk->sk_socket->ops); 9235bb4c45dSJakub Sitnicki smp_store_release(&saved_tcpv4_prot, prot); 92463a6b3feSAtul Gupta } 92563a6b3feSAtul Gupta mutex_unlock(&tcpv4_prot_mutex); 92663a6b3feSAtul Gupta } 92763a6b3feSAtul Gupta } 92863a6b3feSAtul Gupta 929f66de3eeSBoris Pismenny static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 930f13fe3e6SJakub Sitnicki const struct proto *base) 931c113187dSBoris Pismenny { 932f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE] = *base; 933f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].setsockopt = tls_setsockopt; 934f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].getsockopt = tls_getsockopt; 935f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].close = tls_sk_proto_close; 936c113187dSBoris Pismenny 937f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 938f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendmsg = tls_sw_sendmsg; 939f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendpage = tls_sw_sendpage; 940c46234ebSDave Watson 941f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW] = prot[TLS_BASE][TLS_BASE]; 942f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].recvmsg = tls_sw_recvmsg; 9437b50ecfcSCong Wang prot[TLS_BASE][TLS_SW].sock_is_readable = tls_sw_sock_is_readable; 944f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].close = tls_sk_proto_close; 945c46234ebSDave Watson 946f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW] = prot[TLS_SW][TLS_BASE]; 947f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].recvmsg = tls_sw_recvmsg; 9487b50ecfcSCong Wang prot[TLS_SW][TLS_SW].sock_is_readable = tls_sw_sock_is_readable; 949f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].close = tls_sk_proto_close; 950dd0bed16SAtul Gupta 951e8f69799SIlya Lesokhin #ifdef CONFIG_TLS_DEVICE 952e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 953e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendmsg = tls_device_sendmsg; 954e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendpage = tls_device_sendpage; 955e8f69799SIlya Lesokhin 956e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW] = prot[TLS_BASE][TLS_SW]; 957e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendmsg = tls_device_sendmsg; 958e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendpage = tls_device_sendpage; 9594799ac81SBoris Pismenny 9604799ac81SBoris Pismenny prot[TLS_BASE][TLS_HW] = prot[TLS_BASE][TLS_SW]; 9614799ac81SBoris Pismenny 9624799ac81SBoris Pismenny prot[TLS_SW][TLS_HW] = prot[TLS_SW][TLS_SW]; 9634799ac81SBoris Pismenny 9644799ac81SBoris Pismenny prot[TLS_HW][TLS_HW] = prot[TLS_HW][TLS_SW]; 965e8f69799SIlya Lesokhin #endif 96653b4414aSJakub Kicinski #ifdef CONFIG_TLS_TOE 967f66de3eeSBoris Pismenny prot[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 9680eb8745eSJakub Kicinski prot[TLS_HW_RECORD][TLS_HW_RECORD].hash = tls_toe_hash; 9690eb8745eSJakub Kicinski prot[TLS_HW_RECORD][TLS_HW_RECORD].unhash = tls_toe_unhash; 97053b4414aSJakub Kicinski #endif 971c113187dSBoris Pismenny } 972c113187dSBoris Pismenny 9733c4d7559SDave Watson static int tls_init(struct sock *sk) 9743c4d7559SDave Watson { 9753c4d7559SDave Watson struct tls_context *ctx; 9763c4d7559SDave Watson int rc = 0; 9773c4d7559SDave Watson 97816bed0e6SJakub Kicinski tls_build_proto(sk); 97916bed0e6SJakub Kicinski 98053b4414aSJakub Kicinski #ifdef CONFIG_TLS_TOE 9810eb8745eSJakub Kicinski if (tls_toe_bypass(sk)) 98295fa1454SJohn Fastabend return 0; 98353b4414aSJakub Kicinski #endif 984dd0bed16SAtul Gupta 985d91c3e17SIlya Lesokhin /* The TLS ulp is currently supported only for TCP sockets 986d91c3e17SIlya Lesokhin * in ESTABLISHED state. 987d91c3e17SIlya Lesokhin * Supporting sockets in LISTEN state will require us 988d91c3e17SIlya Lesokhin * to modify the accept implementation to clone rather then 989d91c3e17SIlya Lesokhin * share the ulp context. 990d91c3e17SIlya Lesokhin */ 991d91c3e17SIlya Lesokhin if (sk->sk_state != TCP_ESTABLISHED) 9924a5cdc60SValentin Vidic return -ENOTCONN; 993d91c3e17SIlya Lesokhin 9943c4d7559SDave Watson /* allocate tls context */ 99595fa1454SJohn Fastabend write_lock_bh(&sk->sk_callback_lock); 99608700dabSJakub Kicinski ctx = tls_ctx_create(sk); 9973c4d7559SDave Watson if (!ctx) { 9983c4d7559SDave Watson rc = -ENOMEM; 9993c4d7559SDave Watson goto out; 10003c4d7559SDave Watson } 10016d88207fSIlya Lesokhin 1002f66de3eeSBoris Pismenny ctx->tx_conf = TLS_BASE; 1003f66de3eeSBoris Pismenny ctx->rx_conf = TLS_BASE; 10046d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 10053c4d7559SDave Watson out: 100695fa1454SJohn Fastabend write_unlock_bh(&sk->sk_callback_lock); 10073c4d7559SDave Watson return rc; 10083c4d7559SDave Watson } 10093c4d7559SDave Watson 101033bfe20dSJohn Fastabend static void tls_update(struct sock *sk, struct proto *p, 101133bfe20dSJohn Fastabend void (*write_space)(struct sock *sk)) 101295fa1454SJohn Fastabend { 101395fa1454SJohn Fastabend struct tls_context *ctx; 101495fa1454SJohn Fastabend 1015e34a07c0SJakub Kicinski WARN_ON_ONCE(sk->sk_prot == p); 1016e34a07c0SJakub Kicinski 101795fa1454SJohn Fastabend ctx = tls_get_ctx(sk); 101833bfe20dSJohn Fastabend if (likely(ctx)) { 101933bfe20dSJohn Fastabend ctx->sk_write_space = write_space; 102095fa1454SJohn Fastabend ctx->sk_proto = p; 102133bfe20dSJohn Fastabend } else { 1022b8e202d1SJakub Sitnicki /* Pairs with lockless read in sk_clone_lock(). */ 1023b8e202d1SJakub Sitnicki WRITE_ONCE(sk->sk_prot, p); 102433bfe20dSJohn Fastabend sk->sk_write_space = write_space; 102533bfe20dSJohn Fastabend } 102695fa1454SJohn Fastabend } 102795fa1454SJohn Fastabend 102858790314SJakub Kicinski static u16 tls_user_config(struct tls_context *ctx, bool tx) 102958790314SJakub Kicinski { 103058790314SJakub Kicinski u16 config = tx ? ctx->tx_conf : ctx->rx_conf; 103158790314SJakub Kicinski 103258790314SJakub Kicinski switch (config) { 103358790314SJakub Kicinski case TLS_BASE: 103458790314SJakub Kicinski return TLS_CONF_BASE; 103558790314SJakub Kicinski case TLS_SW: 103658790314SJakub Kicinski return TLS_CONF_SW; 103758790314SJakub Kicinski case TLS_HW: 103858790314SJakub Kicinski return TLS_CONF_HW; 103958790314SJakub Kicinski case TLS_HW_RECORD: 104058790314SJakub Kicinski return TLS_CONF_HW_RECORD; 104158790314SJakub Kicinski } 104258790314SJakub Kicinski return 0; 104358790314SJakub Kicinski } 104458790314SJakub Kicinski 104526811cc9SDavide Caratti static int tls_get_info(const struct sock *sk, struct sk_buff *skb) 104626811cc9SDavide Caratti { 104726811cc9SDavide Caratti u16 version, cipher_type; 104826811cc9SDavide Caratti struct tls_context *ctx; 104926811cc9SDavide Caratti struct nlattr *start; 105026811cc9SDavide Caratti int err; 105126811cc9SDavide Caratti 105226811cc9SDavide Caratti start = nla_nest_start_noflag(skb, INET_ULP_INFO_TLS); 105326811cc9SDavide Caratti if (!start) 105426811cc9SDavide Caratti return -EMSGSIZE; 105526811cc9SDavide Caratti 105626811cc9SDavide Caratti rcu_read_lock(); 105726811cc9SDavide Caratti ctx = rcu_dereference(inet_csk(sk)->icsk_ulp_data); 105826811cc9SDavide Caratti if (!ctx) { 105926811cc9SDavide Caratti err = 0; 106026811cc9SDavide Caratti goto nla_failure; 106126811cc9SDavide Caratti } 106226811cc9SDavide Caratti version = ctx->prot_info.version; 106326811cc9SDavide Caratti if (version) { 106426811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_VERSION, version); 106526811cc9SDavide Caratti if (err) 106626811cc9SDavide Caratti goto nla_failure; 106726811cc9SDavide Caratti } 106826811cc9SDavide Caratti cipher_type = ctx->prot_info.cipher_type; 106926811cc9SDavide Caratti if (cipher_type) { 107026811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_CIPHER, cipher_type); 107126811cc9SDavide Caratti if (err) 107226811cc9SDavide Caratti goto nla_failure; 107326811cc9SDavide Caratti } 107426811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_TXCONF, tls_user_config(ctx, true)); 107526811cc9SDavide Caratti if (err) 107626811cc9SDavide Caratti goto nla_failure; 107726811cc9SDavide Caratti 107826811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_RXCONF, tls_user_config(ctx, false)); 107926811cc9SDavide Caratti if (err) 108026811cc9SDavide Caratti goto nla_failure; 108126811cc9SDavide Caratti 1082c1318b39SBoris Pismenny if (ctx->tx_conf == TLS_HW && ctx->zerocopy_sendfile) { 1083b489a6e5SMaxim Mikityanskiy err = nla_put_flag(skb, TLS_INFO_ZC_RO_TX); 1084c1318b39SBoris Pismenny if (err) 1085c1318b39SBoris Pismenny goto nla_failure; 1086c1318b39SBoris Pismenny } 108788527790SJakub Kicinski if (ctx->rx_no_pad) { 108888527790SJakub Kicinski err = nla_put_flag(skb, TLS_INFO_RX_NO_PAD); 108988527790SJakub Kicinski if (err) 109088527790SJakub Kicinski goto nla_failure; 109188527790SJakub Kicinski } 1092c1318b39SBoris Pismenny 109326811cc9SDavide Caratti rcu_read_unlock(); 109426811cc9SDavide Caratti nla_nest_end(skb, start); 109526811cc9SDavide Caratti return 0; 109626811cc9SDavide Caratti 109726811cc9SDavide Caratti nla_failure: 109826811cc9SDavide Caratti rcu_read_unlock(); 109926811cc9SDavide Caratti nla_nest_cancel(skb, start); 110026811cc9SDavide Caratti return err; 110126811cc9SDavide Caratti } 110226811cc9SDavide Caratti 110326811cc9SDavide Caratti static size_t tls_get_info_size(const struct sock *sk) 110426811cc9SDavide Caratti { 110526811cc9SDavide Caratti size_t size = 0; 110626811cc9SDavide Caratti 110726811cc9SDavide Caratti size += nla_total_size(0) + /* INET_ULP_INFO_TLS */ 110826811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_VERSION */ 110926811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_CIPHER */ 111026811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_RXCONF */ 111126811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_TXCONF */ 1112b489a6e5SMaxim Mikityanskiy nla_total_size(0) + /* TLS_INFO_ZC_RO_TX */ 111388527790SJakub Kicinski nla_total_size(0) + /* TLS_INFO_RX_NO_PAD */ 111426811cc9SDavide Caratti 0; 111526811cc9SDavide Caratti 111626811cc9SDavide Caratti return size; 111726811cc9SDavide Caratti } 111826811cc9SDavide Caratti 1119d26b698dSJakub Kicinski static int __net_init tls_init_net(struct net *net) 1120d26b698dSJakub Kicinski { 1121d26b698dSJakub Kicinski int err; 1122d26b698dSJakub Kicinski 1123d26b698dSJakub Kicinski net->mib.tls_statistics = alloc_percpu(struct linux_tls_mib); 1124d26b698dSJakub Kicinski if (!net->mib.tls_statistics) 1125d26b698dSJakub Kicinski return -ENOMEM; 1126d26b698dSJakub Kicinski 1127d26b698dSJakub Kicinski err = tls_proc_init(net); 1128d26b698dSJakub Kicinski if (err) 1129d26b698dSJakub Kicinski goto err_free_stats; 1130d26b698dSJakub Kicinski 1131d26b698dSJakub Kicinski return 0; 1132d26b698dSJakub Kicinski err_free_stats: 1133d26b698dSJakub Kicinski free_percpu(net->mib.tls_statistics); 1134d26b698dSJakub Kicinski return err; 1135d26b698dSJakub Kicinski } 1136d26b698dSJakub Kicinski 1137d26b698dSJakub Kicinski static void __net_exit tls_exit_net(struct net *net) 1138d26b698dSJakub Kicinski { 1139d26b698dSJakub Kicinski tls_proc_fini(net); 1140d26b698dSJakub Kicinski free_percpu(net->mib.tls_statistics); 1141d26b698dSJakub Kicinski } 1142d26b698dSJakub Kicinski 1143d26b698dSJakub Kicinski static struct pernet_operations tls_proc_ops = { 1144d26b698dSJakub Kicinski .init = tls_init_net, 1145d26b698dSJakub Kicinski .exit = tls_exit_net, 1146d26b698dSJakub Kicinski }; 1147d26b698dSJakub Kicinski 11483c4d7559SDave Watson static struct tcp_ulp_ops tcp_tls_ulp_ops __read_mostly = { 11493c4d7559SDave Watson .name = "tls", 11503c4d7559SDave Watson .owner = THIS_MODULE, 11513c4d7559SDave Watson .init = tls_init, 115295fa1454SJohn Fastabend .update = tls_update, 115326811cc9SDavide Caratti .get_info = tls_get_info, 115426811cc9SDavide Caratti .get_info_size = tls_get_info_size, 11553c4d7559SDave Watson }; 11563c4d7559SDave Watson 11573c4d7559SDave Watson static int __init tls_register(void) 11583c4d7559SDave Watson { 1159d26b698dSJakub Kicinski int err; 1160d26b698dSJakub Kicinski 1161d26b698dSJakub Kicinski err = register_pernet_subsys(&tls_proc_ops); 1162d26b698dSJakub Kicinski if (err) 1163d26b698dSJakub Kicinski return err; 1164d26b698dSJakub Kicinski 116584c61fe1SJakub Kicinski err = tls_strp_dev_init(); 116684c61fe1SJakub Kicinski if (err) 116784c61fe1SJakub Kicinski goto err_pernet; 116884c61fe1SJakub Kicinski 11693d8c51b2STariq Toukan err = tls_device_init(); 117084c61fe1SJakub Kicinski if (err) 117184c61fe1SJakub Kicinski goto err_strp; 11723d8c51b2STariq Toukan 11733c4d7559SDave Watson tcp_register_ulp(&tcp_tls_ulp_ops); 11743c4d7559SDave Watson 11753c4d7559SDave Watson return 0; 117684c61fe1SJakub Kicinski err_strp: 117784c61fe1SJakub Kicinski tls_strp_dev_exit(); 117884c61fe1SJakub Kicinski err_pernet: 117984c61fe1SJakub Kicinski unregister_pernet_subsys(&tls_proc_ops); 118084c61fe1SJakub Kicinski return err; 11813c4d7559SDave Watson } 11823c4d7559SDave Watson 11833c4d7559SDave Watson static void __exit tls_unregister(void) 11843c4d7559SDave Watson { 11853c4d7559SDave Watson tcp_unregister_ulp(&tcp_tls_ulp_ops); 118684c61fe1SJakub Kicinski tls_strp_dev_exit(); 1187e8f69799SIlya Lesokhin tls_device_cleanup(); 1188d26b698dSJakub Kicinski unregister_pernet_subsys(&tls_proc_ops); 11893c4d7559SDave Watson } 11903c4d7559SDave Watson 11913c4d7559SDave Watson module_init(tls_register); 11923c4d7559SDave Watson module_exit(tls_unregister); 1193