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 61f691a25cSArnd Bergmann static const struct proto *saved_tcpv6_prot; 62c113187dSBoris Pismenny static DEFINE_MUTEX(tcpv6_prot_mutex); 63f691a25cSArnd Bergmann static const struct proto *saved_tcpv4_prot; 6428cb6f1eSJohn Fastabend static DEFINE_MUTEX(tcpv4_prot_mutex); 65f66de3eeSBoris Pismenny static struct proto tls_prots[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG]; 66f3911f73SJakub Kicinski static struct proto_ops tls_proto_ops[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG]; 6763a6b3feSAtul Gupta static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 68f13fe3e6SJakub Sitnicki const struct proto *base); 696d88207fSIlya Lesokhin 7008700dabSJakub Kicinski void update_sk_prot(struct sock *sk, struct tls_context *ctx) 716d88207fSIlya Lesokhin { 72c113187dSBoris Pismenny int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 73c113187dSBoris Pismenny 74d5bee737SJakub Sitnicki WRITE_ONCE(sk->sk_prot, 75d5bee737SJakub Sitnicki &tls_prots[ip_ver][ctx->tx_conf][ctx->rx_conf]); 76f3911f73SJakub Kicinski WRITE_ONCE(sk->sk_socket->ops, 77f3911f73SJakub Kicinski &tls_proto_ops[ip_ver][ctx->tx_conf][ctx->rx_conf]); 786d88207fSIlya Lesokhin } 793c4d7559SDave Watson 803c4d7559SDave Watson int wait_on_pending_writer(struct sock *sk, long *timeo) 813c4d7559SDave Watson { 823c4d7559SDave Watson int rc = 0; 833c4d7559SDave Watson DEFINE_WAIT_FUNC(wait, woken_wake_function); 843c4d7559SDave Watson 853c4d7559SDave Watson add_wait_queue(sk_sleep(sk), &wait); 863c4d7559SDave Watson while (1) { 873c4d7559SDave Watson if (!*timeo) { 883c4d7559SDave Watson rc = -EAGAIN; 893c4d7559SDave Watson break; 903c4d7559SDave Watson } 913c4d7559SDave Watson 923c4d7559SDave Watson if (signal_pending(current)) { 933c4d7559SDave Watson rc = sock_intr_errno(*timeo); 943c4d7559SDave Watson break; 953c4d7559SDave Watson } 963c4d7559SDave Watson 973c4d7559SDave Watson if (sk_wait_event(sk, timeo, !sk->sk_write_pending, &wait)) 983c4d7559SDave Watson break; 993c4d7559SDave Watson } 1003c4d7559SDave Watson remove_wait_queue(sk_sleep(sk), &wait); 1013c4d7559SDave Watson return rc; 1023c4d7559SDave Watson } 1033c4d7559SDave Watson 1043c4d7559SDave Watson int tls_push_sg(struct sock *sk, 1053c4d7559SDave Watson struct tls_context *ctx, 1063c4d7559SDave Watson struct scatterlist *sg, 1073c4d7559SDave Watson u16 first_offset, 1083c4d7559SDave Watson int flags) 1093c4d7559SDave Watson { 1103c4d7559SDave Watson int sendpage_flags = flags | MSG_SENDPAGE_NOTLAST; 1113c4d7559SDave Watson int ret = 0; 1123c4d7559SDave Watson struct page *p; 1133c4d7559SDave Watson size_t size; 1143c4d7559SDave Watson int offset = first_offset; 1153c4d7559SDave Watson 1163c4d7559SDave Watson size = sg->length - offset; 1173c4d7559SDave Watson offset += sg->offset; 1183c4d7559SDave Watson 119c212d2c7SDave Watson ctx->in_tcp_sendpages = true; 1203c4d7559SDave Watson while (1) { 1213c4d7559SDave Watson if (sg_is_last(sg)) 1223c4d7559SDave Watson sendpage_flags = flags; 1233c4d7559SDave Watson 1243c4d7559SDave Watson /* is sending application-limited? */ 1253c4d7559SDave Watson tcp_rate_check_app_limited(sk); 1263c4d7559SDave Watson p = sg_page(sg); 1273c4d7559SDave Watson retry: 1283c4d7559SDave Watson ret = do_tcp_sendpages(sk, p, offset, size, sendpage_flags); 1293c4d7559SDave Watson 1303c4d7559SDave Watson if (ret != size) { 1313c4d7559SDave Watson if (ret > 0) { 1323c4d7559SDave Watson offset += ret; 1333c4d7559SDave Watson size -= ret; 1343c4d7559SDave Watson goto retry; 1353c4d7559SDave Watson } 1363c4d7559SDave Watson 1373c4d7559SDave Watson offset -= sg->offset; 1383c4d7559SDave Watson ctx->partially_sent_offset = offset; 1393c4d7559SDave Watson ctx->partially_sent_record = (void *)sg; 140080324c3SAndre Tomt ctx->in_tcp_sendpages = false; 1413c4d7559SDave Watson return ret; 1423c4d7559SDave Watson } 1433c4d7559SDave Watson 1443c4d7559SDave Watson put_page(p); 1453c4d7559SDave Watson sk_mem_uncharge(sk, sg->length); 1463c4d7559SDave Watson sg = sg_next(sg); 1473c4d7559SDave Watson if (!sg) 1483c4d7559SDave Watson break; 1493c4d7559SDave Watson 1503c4d7559SDave Watson offset = sg->offset; 1513c4d7559SDave Watson size = sg->length; 1523c4d7559SDave Watson } 1533c4d7559SDave Watson 154c212d2c7SDave Watson ctx->in_tcp_sendpages = false; 1553c4d7559SDave Watson 1563c4d7559SDave Watson return 0; 1573c4d7559SDave Watson } 1583c4d7559SDave Watson 1593c4d7559SDave Watson static int tls_handle_open_record(struct sock *sk, int flags) 1603c4d7559SDave Watson { 1613c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 1623c4d7559SDave Watson 1633c4d7559SDave Watson if (tls_is_pending_open_record(ctx)) 1643c4d7559SDave Watson return ctx->push_pending_record(sk, flags); 1653c4d7559SDave Watson 1663c4d7559SDave Watson return 0; 1673c4d7559SDave Watson } 1683c4d7559SDave Watson 16958790314SJakub Kicinski int tls_process_cmsg(struct sock *sk, struct msghdr *msg, 1703c4d7559SDave Watson unsigned char *record_type) 1713c4d7559SDave Watson { 1723c4d7559SDave Watson struct cmsghdr *cmsg; 1733c4d7559SDave Watson int rc = -EINVAL; 1743c4d7559SDave Watson 1753c4d7559SDave Watson for_each_cmsghdr(cmsg, msg) { 1763c4d7559SDave Watson if (!CMSG_OK(msg, cmsg)) 1773c4d7559SDave Watson return -EINVAL; 1783c4d7559SDave Watson if (cmsg->cmsg_level != SOL_TLS) 1793c4d7559SDave Watson continue; 1803c4d7559SDave Watson 1813c4d7559SDave Watson switch (cmsg->cmsg_type) { 1823c4d7559SDave Watson case TLS_SET_RECORD_TYPE: 1833c4d7559SDave Watson if (cmsg->cmsg_len < CMSG_LEN(sizeof(*record_type))) 1843c4d7559SDave Watson return -EINVAL; 1853c4d7559SDave Watson 1863c4d7559SDave Watson if (msg->msg_flags & MSG_MORE) 1873c4d7559SDave Watson return -EINVAL; 1883c4d7559SDave Watson 1893c4d7559SDave Watson rc = tls_handle_open_record(sk, msg->msg_flags); 1903c4d7559SDave Watson if (rc) 1913c4d7559SDave Watson return rc; 1923c4d7559SDave Watson 1933c4d7559SDave Watson *record_type = *(unsigned char *)CMSG_DATA(cmsg); 1943c4d7559SDave Watson rc = 0; 1953c4d7559SDave Watson break; 1963c4d7559SDave Watson default: 1973c4d7559SDave Watson return -EINVAL; 1983c4d7559SDave Watson } 1993c4d7559SDave Watson } 2003c4d7559SDave Watson 2013c4d7559SDave Watson return rc; 2023c4d7559SDave Watson } 2033c4d7559SDave Watson 204a42055e8SVakul Garg int tls_push_partial_record(struct sock *sk, struct tls_context *ctx, 205a42055e8SVakul Garg int flags) 2063c4d7559SDave Watson { 2073c4d7559SDave Watson struct scatterlist *sg; 2083c4d7559SDave Watson u16 offset; 2093c4d7559SDave Watson 2103c4d7559SDave Watson sg = ctx->partially_sent_record; 2113c4d7559SDave Watson offset = ctx->partially_sent_offset; 2123c4d7559SDave Watson 2133c4d7559SDave Watson ctx->partially_sent_record = NULL; 2143c4d7559SDave Watson return tls_push_sg(sk, ctx, sg, offset, flags); 2153c4d7559SDave Watson } 2163c4d7559SDave Watson 217c5daa6ccSJakub Kicinski void tls_free_partial_record(struct sock *sk, struct tls_context *ctx) 21835b71a34SJakub Kicinski { 21935b71a34SJakub Kicinski struct scatterlist *sg; 22035b71a34SJakub Kicinski 221c5daa6ccSJakub Kicinski for (sg = ctx->partially_sent_record; sg; sg = sg_next(sg)) { 22235b71a34SJakub Kicinski put_page(sg_page(sg)); 22335b71a34SJakub Kicinski sk_mem_uncharge(sk, sg->length); 22435b71a34SJakub Kicinski } 22535b71a34SJakub Kicinski ctx->partially_sent_record = NULL; 22635b71a34SJakub Kicinski } 22735b71a34SJakub Kicinski 2283c4d7559SDave Watson static void tls_write_space(struct sock *sk) 2293c4d7559SDave Watson { 2303c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 2313c4d7559SDave Watson 23267db7cd2SJohn Fastabend /* If in_tcp_sendpages call lower protocol write space handler 23367db7cd2SJohn Fastabend * to ensure we wake up any waiting operations there. For example 23467db7cd2SJohn Fastabend * if do_tcp_sendpages where to call sk_wait_event. 23567db7cd2SJohn Fastabend */ 23667db7cd2SJohn Fastabend if (ctx->in_tcp_sendpages) { 23767db7cd2SJohn Fastabend ctx->sk_write_space(sk); 238c212d2c7SDave Watson return; 23967db7cd2SJohn Fastabend } 240c212d2c7SDave Watson 2417463d3a2SBoris Pismenny #ifdef CONFIG_TLS_DEVICE 2427463d3a2SBoris Pismenny if (ctx->tx_conf == TLS_HW) 2437463d3a2SBoris Pismenny tls_device_write_space(sk, ctx); 2447463d3a2SBoris Pismenny else 2457463d3a2SBoris Pismenny #endif 2467463d3a2SBoris Pismenny tls_sw_write_space(sk, ctx); 2474504ab0eSVakul Garg 2484504ab0eSVakul Garg ctx->sk_write_space(sk); 2493c4d7559SDave Watson } 2503c4d7559SDave Watson 25115a7dea7SJakub Kicinski /** 25215a7dea7SJakub Kicinski * tls_ctx_free() - free TLS ULP context 25315a7dea7SJakub Kicinski * @sk: socket to with @ctx is attached 25415a7dea7SJakub Kicinski * @ctx: TLS context structure 25515a7dea7SJakub Kicinski * 25615a7dea7SJakub Kicinski * Free TLS context. If @sk is %NULL caller guarantees that the socket 25715a7dea7SJakub Kicinski * to which @ctx was attached has no outstanding references. 25815a7dea7SJakub Kicinski */ 25915a7dea7SJakub Kicinski void tls_ctx_free(struct sock *sk, struct tls_context *ctx) 26086029d10SSabrina Dubroca { 26186029d10SSabrina Dubroca if (!ctx) 26286029d10SSabrina Dubroca return; 26386029d10SSabrina Dubroca 26486029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_send, sizeof(ctx->crypto_send)); 26586029d10SSabrina Dubroca memzero_explicit(&ctx->crypto_recv, sizeof(ctx->crypto_recv)); 26679ffe608SJakub Kicinski mutex_destroy(&ctx->tx_lock); 26715a7dea7SJakub Kicinski 26815a7dea7SJakub Kicinski if (sk) 26915a7dea7SJakub Kicinski kfree_rcu(ctx, rcu); 27015a7dea7SJakub Kicinski else 27186029d10SSabrina Dubroca kfree(ctx); 27286029d10SSabrina Dubroca } 27386029d10SSabrina Dubroca 274313ab004SJohn Fastabend static void tls_sk_proto_cleanup(struct sock *sk, 275313ab004SJohn Fastabend struct tls_context *ctx, long timeo) 2763c4d7559SDave Watson { 2779354544cSDirk van der Merwe if (unlikely(sk->sk_write_pending) && 2789354544cSDirk van der Merwe !wait_on_pending_writer(sk, &timeo)) 2793c4d7559SDave Watson tls_handle_open_record(sk, 0); 2803c4d7559SDave Watson 281f66de3eeSBoris Pismenny /* We need these for tls_sw_fallback handling of other packets */ 282f66de3eeSBoris Pismenny if (ctx->tx_conf == TLS_SW) { 283dbe42559SDave Watson kfree(ctx->tx.rec_seq); 284dbe42559SDave Watson kfree(ctx->tx.iv); 285313ab004SJohn Fastabend tls_sw_release_resources_tx(sk); 286b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXSW); 28735b71a34SJakub Kicinski } else if (ctx->tx_conf == TLS_HW) { 28835b71a34SJakub Kicinski tls_device_free_resources_tx(sk); 289b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXDEVICE); 290f66de3eeSBoris Pismenny } 291f66de3eeSBoris Pismenny 292b32fd3ccSJakub Kicinski if (ctx->rx_conf == TLS_SW) { 293313ab004SJohn Fastabend tls_sw_release_resources_rx(sk); 294b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXSW); 295b32fd3ccSJakub Kicinski } else if (ctx->rx_conf == TLS_HW) { 2964799ac81SBoris Pismenny tls_device_offload_cleanup_rx(sk); 297b32fd3ccSJakub Kicinski TLS_DEC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXDEVICE); 298b32fd3ccSJakub Kicinski } 299e8f69799SIlya Lesokhin } 300e8f69799SIlya Lesokhin 301313ab004SJohn Fastabend static void tls_sk_proto_close(struct sock *sk, long timeout) 302313ab004SJohn Fastabend { 30395fa1454SJohn Fastabend struct inet_connection_sock *icsk = inet_csk(sk); 304313ab004SJohn Fastabend struct tls_context *ctx = tls_get_ctx(sk); 305313ab004SJohn Fastabend long timeo = sock_sndtimeo(sk, 0); 306313ab004SJohn Fastabend bool free_ctx; 307313ab004SJohn Fastabend 308313ab004SJohn Fastabend if (ctx->tx_conf == TLS_SW) 309313ab004SJohn Fastabend tls_sw_cancel_work_tx(ctx); 310313ab004SJohn Fastabend 311313ab004SJohn Fastabend lock_sock(sk); 312313ab004SJohn Fastabend free_ctx = ctx->tx_conf != TLS_HW && ctx->rx_conf != TLS_HW; 313313ab004SJohn Fastabend 314313ab004SJohn Fastabend if (ctx->tx_conf != TLS_BASE || ctx->rx_conf != TLS_BASE) 315313ab004SJohn Fastabend tls_sk_proto_cleanup(sk, ctx, timeo); 316313ab004SJohn Fastabend 31795fa1454SJohn Fastabend write_lock_bh(&sk->sk_callback_lock); 31895fa1454SJohn Fastabend if (free_ctx) 31915a7dea7SJakub Kicinski rcu_assign_pointer(icsk->icsk_ulp_data, NULL); 320d5bee737SJakub Sitnicki WRITE_ONCE(sk->sk_prot, ctx->sk_proto); 321d85f0177SJohn Fastabend if (sk->sk_write_space == tls_write_space) 32257c722e9SJakub Kicinski sk->sk_write_space = ctx->sk_write_space; 32395fa1454SJohn Fastabend write_unlock_bh(&sk->sk_callback_lock); 3243c4d7559SDave Watson release_sock(sk); 325313ab004SJohn Fastabend if (ctx->tx_conf == TLS_SW) 326313ab004SJohn Fastabend tls_sw_free_ctx_tx(ctx); 327313ab004SJohn Fastabend if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) 328313ab004SJohn Fastabend tls_sw_strparser_done(ctx); 329313ab004SJohn Fastabend if (ctx->rx_conf == TLS_SW) 330313ab004SJohn Fastabend tls_sw_free_ctx_rx(ctx); 331be7bbea1SJakub Kicinski ctx->sk_proto->close(sk, timeout); 332313ab004SJohn Fastabend 33398f0a395SEric Dumazet if (free_ctx) 33415a7dea7SJakub Kicinski tls_ctx_free(sk, ctx); 3353c4d7559SDave Watson } 3363c4d7559SDave Watson 337ffa81fa4SYutaro Hayakawa static int do_tls_getsockopt_conf(struct sock *sk, char __user *optval, 338ffa81fa4SYutaro Hayakawa int __user *optlen, int tx) 3393c4d7559SDave Watson { 3403c4d7559SDave Watson int rc = 0; 3413c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 3423c4d7559SDave Watson struct tls_crypto_info *crypto_info; 343ffa81fa4SYutaro Hayakawa struct cipher_context *cctx; 3443c4d7559SDave Watson int len; 3453c4d7559SDave Watson 3463c4d7559SDave Watson if (get_user(len, optlen)) 3473c4d7559SDave Watson return -EFAULT; 3483c4d7559SDave Watson 3493c4d7559SDave Watson if (!optval || (len < sizeof(*crypto_info))) { 3503c4d7559SDave Watson rc = -EINVAL; 3513c4d7559SDave Watson goto out; 3523c4d7559SDave Watson } 3533c4d7559SDave Watson 3543c4d7559SDave Watson if (!ctx) { 3553c4d7559SDave Watson rc = -EBUSY; 3563c4d7559SDave Watson goto out; 3573c4d7559SDave Watson } 3583c4d7559SDave Watson 3593c4d7559SDave Watson /* get user crypto info */ 360ffa81fa4SYutaro Hayakawa if (tx) { 36186029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 362ffa81fa4SYutaro Hayakawa cctx = &ctx->tx; 363ffa81fa4SYutaro Hayakawa } else { 364ffa81fa4SYutaro Hayakawa crypto_info = &ctx->crypto_recv.info; 365ffa81fa4SYutaro Hayakawa cctx = &ctx->rx; 366ffa81fa4SYutaro Hayakawa } 3673c4d7559SDave Watson 3683c4d7559SDave Watson if (!TLS_CRYPTO_INFO_READY(crypto_info)) { 3693c4d7559SDave Watson rc = -EBUSY; 3703c4d7559SDave Watson goto out; 3713c4d7559SDave Watson } 3723c4d7559SDave Watson 3735a3b886cSMatthias Rosenfelder if (len == sizeof(*crypto_info)) { 374ac55cd61SDan Carpenter if (copy_to_user(optval, crypto_info, sizeof(*crypto_info))) 375ac55cd61SDan Carpenter rc = -EFAULT; 3763c4d7559SDave Watson goto out; 3773c4d7559SDave Watson } 3783c4d7559SDave Watson 3793c4d7559SDave Watson switch (crypto_info->cipher_type) { 3803c4d7559SDave Watson case TLS_CIPHER_AES_GCM_128: { 3813c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128 * 3823c4d7559SDave Watson crypto_info_aes_gcm_128 = 3833c4d7559SDave Watson container_of(crypto_info, 3843c4d7559SDave Watson struct tls12_crypto_info_aes_gcm_128, 3853c4d7559SDave Watson info); 3863c4d7559SDave Watson 3873c4d7559SDave Watson if (len != sizeof(*crypto_info_aes_gcm_128)) { 3883c4d7559SDave Watson rc = -EINVAL; 3893c4d7559SDave Watson goto out; 3903c4d7559SDave Watson } 3913c4d7559SDave Watson lock_sock(sk); 392a1dfa681SBoris Pismenny memcpy(crypto_info_aes_gcm_128->iv, 393ffa81fa4SYutaro Hayakawa cctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, 3943c4d7559SDave Watson TLS_CIPHER_AES_GCM_128_IV_SIZE); 395ffa81fa4SYutaro Hayakawa memcpy(crypto_info_aes_gcm_128->rec_seq, cctx->rec_seq, 396c410c196SBoris Pismenny TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE); 3973c4d7559SDave Watson release_sock(sk); 398ac55cd61SDan Carpenter if (copy_to_user(optval, 3993c4d7559SDave Watson crypto_info_aes_gcm_128, 400ac55cd61SDan Carpenter sizeof(*crypto_info_aes_gcm_128))) 401ac55cd61SDan Carpenter rc = -EFAULT; 4023c4d7559SDave Watson break; 4033c4d7559SDave Watson } 404fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_256: { 405fb99bce7SDave Watson struct tls12_crypto_info_aes_gcm_256 * 406fb99bce7SDave Watson crypto_info_aes_gcm_256 = 407fb99bce7SDave Watson container_of(crypto_info, 408fb99bce7SDave Watson struct tls12_crypto_info_aes_gcm_256, 409fb99bce7SDave Watson info); 410fb99bce7SDave Watson 411fb99bce7SDave Watson if (len != sizeof(*crypto_info_aes_gcm_256)) { 412fb99bce7SDave Watson rc = -EINVAL; 413fb99bce7SDave Watson goto out; 414fb99bce7SDave Watson } 415fb99bce7SDave Watson lock_sock(sk); 416fb99bce7SDave Watson memcpy(crypto_info_aes_gcm_256->iv, 417ffa81fa4SYutaro Hayakawa cctx->iv + TLS_CIPHER_AES_GCM_256_SALT_SIZE, 418fb99bce7SDave Watson TLS_CIPHER_AES_GCM_256_IV_SIZE); 419ffa81fa4SYutaro Hayakawa memcpy(crypto_info_aes_gcm_256->rec_seq, cctx->rec_seq, 420fb99bce7SDave Watson TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE); 421fb99bce7SDave Watson release_sock(sk); 422fb99bce7SDave Watson if (copy_to_user(optval, 423fb99bce7SDave Watson crypto_info_aes_gcm_256, 424fb99bce7SDave Watson sizeof(*crypto_info_aes_gcm_256))) 425fb99bce7SDave Watson rc = -EFAULT; 426fb99bce7SDave Watson break; 427fb99bce7SDave Watson } 4283fb59a5dSTianjia Zhang case TLS_CIPHER_AES_CCM_128: { 4293fb59a5dSTianjia Zhang struct tls12_crypto_info_aes_ccm_128 *aes_ccm_128 = 4303fb59a5dSTianjia Zhang container_of(crypto_info, 4313fb59a5dSTianjia Zhang struct tls12_crypto_info_aes_ccm_128, info); 4323fb59a5dSTianjia Zhang 4333fb59a5dSTianjia Zhang if (len != sizeof(*aes_ccm_128)) { 4343fb59a5dSTianjia Zhang rc = -EINVAL; 4353fb59a5dSTianjia Zhang goto out; 4363fb59a5dSTianjia Zhang } 4373fb59a5dSTianjia Zhang lock_sock(sk); 4383fb59a5dSTianjia Zhang memcpy(aes_ccm_128->iv, 4393fb59a5dSTianjia Zhang cctx->iv + TLS_CIPHER_AES_CCM_128_SALT_SIZE, 4403fb59a5dSTianjia Zhang TLS_CIPHER_AES_CCM_128_IV_SIZE); 4413fb59a5dSTianjia Zhang memcpy(aes_ccm_128->rec_seq, cctx->rec_seq, 4423fb59a5dSTianjia Zhang TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE); 4433fb59a5dSTianjia Zhang release_sock(sk); 4443fb59a5dSTianjia Zhang if (copy_to_user(optval, aes_ccm_128, sizeof(*aes_ccm_128))) 4453fb59a5dSTianjia Zhang rc = -EFAULT; 4463fb59a5dSTianjia Zhang break; 4473fb59a5dSTianjia Zhang } 4483fb59a5dSTianjia Zhang case TLS_CIPHER_CHACHA20_POLY1305: { 4493fb59a5dSTianjia Zhang struct tls12_crypto_info_chacha20_poly1305 *chacha20_poly1305 = 4503fb59a5dSTianjia Zhang container_of(crypto_info, 4513fb59a5dSTianjia Zhang struct tls12_crypto_info_chacha20_poly1305, 4523fb59a5dSTianjia Zhang info); 4533fb59a5dSTianjia Zhang 4543fb59a5dSTianjia Zhang if (len != sizeof(*chacha20_poly1305)) { 4553fb59a5dSTianjia Zhang rc = -EINVAL; 4563fb59a5dSTianjia Zhang goto out; 4573fb59a5dSTianjia Zhang } 4583fb59a5dSTianjia Zhang lock_sock(sk); 4593fb59a5dSTianjia Zhang memcpy(chacha20_poly1305->iv, 4603fb59a5dSTianjia Zhang cctx->iv + TLS_CIPHER_CHACHA20_POLY1305_SALT_SIZE, 4613fb59a5dSTianjia Zhang TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE); 4623fb59a5dSTianjia Zhang memcpy(chacha20_poly1305->rec_seq, cctx->rec_seq, 4633fb59a5dSTianjia Zhang TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE); 4643fb59a5dSTianjia Zhang release_sock(sk); 4653fb59a5dSTianjia Zhang if (copy_to_user(optval, chacha20_poly1305, 4663fb59a5dSTianjia Zhang sizeof(*chacha20_poly1305))) 4673fb59a5dSTianjia Zhang rc = -EFAULT; 4683fb59a5dSTianjia Zhang break; 4693fb59a5dSTianjia Zhang } 470227b9644STianjia Zhang case TLS_CIPHER_SM4_GCM: { 471227b9644STianjia Zhang struct tls12_crypto_info_sm4_gcm *sm4_gcm_info = 472227b9644STianjia Zhang container_of(crypto_info, 473227b9644STianjia Zhang struct tls12_crypto_info_sm4_gcm, info); 474227b9644STianjia Zhang 475227b9644STianjia Zhang if (len != sizeof(*sm4_gcm_info)) { 476227b9644STianjia Zhang rc = -EINVAL; 477227b9644STianjia Zhang goto out; 478227b9644STianjia Zhang } 479227b9644STianjia Zhang lock_sock(sk); 480227b9644STianjia Zhang memcpy(sm4_gcm_info->iv, 481227b9644STianjia Zhang cctx->iv + TLS_CIPHER_SM4_GCM_SALT_SIZE, 482227b9644STianjia Zhang TLS_CIPHER_SM4_GCM_IV_SIZE); 483227b9644STianjia Zhang memcpy(sm4_gcm_info->rec_seq, cctx->rec_seq, 484227b9644STianjia Zhang TLS_CIPHER_SM4_GCM_REC_SEQ_SIZE); 485227b9644STianjia Zhang release_sock(sk); 486227b9644STianjia Zhang if (copy_to_user(optval, sm4_gcm_info, sizeof(*sm4_gcm_info))) 487227b9644STianjia Zhang rc = -EFAULT; 488227b9644STianjia Zhang break; 489227b9644STianjia Zhang } 490227b9644STianjia Zhang case TLS_CIPHER_SM4_CCM: { 491227b9644STianjia Zhang struct tls12_crypto_info_sm4_ccm *sm4_ccm_info = 492227b9644STianjia Zhang container_of(crypto_info, 493227b9644STianjia Zhang struct tls12_crypto_info_sm4_ccm, info); 494227b9644STianjia Zhang 495227b9644STianjia Zhang if (len != sizeof(*sm4_ccm_info)) { 496227b9644STianjia Zhang rc = -EINVAL; 497227b9644STianjia Zhang goto out; 498227b9644STianjia Zhang } 499227b9644STianjia Zhang lock_sock(sk); 500227b9644STianjia Zhang memcpy(sm4_ccm_info->iv, 501227b9644STianjia Zhang cctx->iv + TLS_CIPHER_SM4_CCM_SALT_SIZE, 502227b9644STianjia Zhang TLS_CIPHER_SM4_CCM_IV_SIZE); 503227b9644STianjia Zhang memcpy(sm4_ccm_info->rec_seq, cctx->rec_seq, 504227b9644STianjia Zhang TLS_CIPHER_SM4_CCM_REC_SEQ_SIZE); 505227b9644STianjia Zhang release_sock(sk); 506227b9644STianjia Zhang if (copy_to_user(optval, sm4_ccm_info, sizeof(*sm4_ccm_info))) 507227b9644STianjia Zhang rc = -EFAULT; 508227b9644STianjia Zhang break; 509227b9644STianjia Zhang } 5103c4d7559SDave Watson default: 5113c4d7559SDave Watson rc = -EINVAL; 5123c4d7559SDave Watson } 5133c4d7559SDave Watson 5143c4d7559SDave Watson out: 5153c4d7559SDave Watson return rc; 5163c4d7559SDave Watson } 5173c4d7559SDave Watson 518c1318b39SBoris Pismenny static int do_tls_getsockopt_tx_zc(struct sock *sk, char __user *optval, 519c1318b39SBoris Pismenny int __user *optlen) 520c1318b39SBoris Pismenny { 521c1318b39SBoris Pismenny struct tls_context *ctx = tls_get_ctx(sk); 522c1318b39SBoris Pismenny unsigned int value; 523c1318b39SBoris Pismenny int len; 524c1318b39SBoris Pismenny 525c1318b39SBoris Pismenny if (get_user(len, optlen)) 526c1318b39SBoris Pismenny return -EFAULT; 527c1318b39SBoris Pismenny 528c1318b39SBoris Pismenny if (len != sizeof(value)) 529c1318b39SBoris Pismenny return -EINVAL; 530c1318b39SBoris Pismenny 531c1318b39SBoris Pismenny value = ctx->zerocopy_sendfile; 532c1318b39SBoris Pismenny if (copy_to_user(optval, &value, sizeof(value))) 533c1318b39SBoris Pismenny return -EFAULT; 534c1318b39SBoris Pismenny 535c1318b39SBoris Pismenny return 0; 536c1318b39SBoris Pismenny } 537c1318b39SBoris Pismenny 53888527790SJakub Kicinski static int do_tls_getsockopt_no_pad(struct sock *sk, char __user *optval, 53988527790SJakub Kicinski int __user *optlen) 54088527790SJakub Kicinski { 54188527790SJakub Kicinski struct tls_context *ctx = tls_get_ctx(sk); 54257128e98SJakub Kicinski int value, len; 54388527790SJakub Kicinski 54488527790SJakub Kicinski if (ctx->prot_info.version != TLS_1_3_VERSION) 54588527790SJakub Kicinski return -EINVAL; 54688527790SJakub Kicinski 54788527790SJakub Kicinski if (get_user(len, optlen)) 54888527790SJakub Kicinski return -EFAULT; 54988527790SJakub Kicinski if (len < sizeof(value)) 55088527790SJakub Kicinski return -EINVAL; 55188527790SJakub Kicinski 55288527790SJakub Kicinski lock_sock(sk); 55357128e98SJakub Kicinski value = -EINVAL; 55488527790SJakub Kicinski if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) 55588527790SJakub Kicinski value = ctx->rx_no_pad; 55688527790SJakub Kicinski release_sock(sk); 55757128e98SJakub Kicinski if (value < 0) 55857128e98SJakub Kicinski return value; 55988527790SJakub Kicinski 56088527790SJakub Kicinski if (put_user(sizeof(value), optlen)) 56188527790SJakub Kicinski return -EFAULT; 56288527790SJakub Kicinski if (copy_to_user(optval, &value, sizeof(value))) 56388527790SJakub Kicinski return -EFAULT; 56488527790SJakub Kicinski 56588527790SJakub Kicinski return 0; 56688527790SJakub Kicinski } 56788527790SJakub Kicinski 5683c4d7559SDave Watson static int do_tls_getsockopt(struct sock *sk, int optname, 5693c4d7559SDave Watson char __user *optval, int __user *optlen) 5703c4d7559SDave Watson { 5713c4d7559SDave Watson int rc = 0; 5723c4d7559SDave Watson 5733c4d7559SDave Watson switch (optname) { 5743c4d7559SDave Watson case TLS_TX: 575ffa81fa4SYutaro Hayakawa case TLS_RX: 576ffa81fa4SYutaro Hayakawa rc = do_tls_getsockopt_conf(sk, optval, optlen, 577ffa81fa4SYutaro Hayakawa optname == TLS_TX); 5783c4d7559SDave Watson break; 579b489a6e5SMaxim Mikityanskiy case TLS_TX_ZEROCOPY_RO: 580c1318b39SBoris Pismenny rc = do_tls_getsockopt_tx_zc(sk, optval, optlen); 581c1318b39SBoris Pismenny break; 58288527790SJakub Kicinski case TLS_RX_EXPECT_NO_PAD: 58388527790SJakub Kicinski rc = do_tls_getsockopt_no_pad(sk, optval, optlen); 58488527790SJakub Kicinski break; 5853c4d7559SDave Watson default: 5863c4d7559SDave Watson rc = -ENOPROTOOPT; 5873c4d7559SDave Watson break; 5883c4d7559SDave Watson } 5893c4d7559SDave Watson return rc; 5903c4d7559SDave Watson } 5913c4d7559SDave Watson 5923c4d7559SDave Watson static int tls_getsockopt(struct sock *sk, int level, int optname, 5933c4d7559SDave Watson char __user *optval, int __user *optlen) 5943c4d7559SDave Watson { 5953c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 5963c4d7559SDave Watson 5973c4d7559SDave Watson if (level != SOL_TLS) 598be7bbea1SJakub Kicinski return ctx->sk_proto->getsockopt(sk, level, 599be7bbea1SJakub Kicinski optname, optval, optlen); 6003c4d7559SDave Watson 6013c4d7559SDave Watson return do_tls_getsockopt(sk, optname, optval, optlen); 6023c4d7559SDave Watson } 6033c4d7559SDave Watson 604a7b75c5aSChristoph Hellwig static int do_tls_setsockopt_conf(struct sock *sk, sockptr_t optval, 605c46234ebSDave Watson unsigned int optlen, int tx) 6063c4d7559SDave Watson { 607196c31b4SIlya Lesokhin struct tls_crypto_info *crypto_info; 6084509de14SVakul Garg struct tls_crypto_info *alt_crypto_info; 6093c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 610fb99bce7SDave Watson size_t optsize; 6113c4d7559SDave Watson int rc = 0; 61258371585SDave Watson int conf; 6133c4d7559SDave Watson 6141ddcbfbfSZiyang Xuan if (sockptr_is_null(optval) || (optlen < sizeof(*crypto_info))) 6151ddcbfbfSZiyang Xuan return -EINVAL; 6163c4d7559SDave Watson 6174509de14SVakul Garg if (tx) { 61886029d10SSabrina Dubroca crypto_info = &ctx->crypto_send.info; 6194509de14SVakul Garg alt_crypto_info = &ctx->crypto_recv.info; 6204509de14SVakul Garg } else { 62186029d10SSabrina Dubroca crypto_info = &ctx->crypto_recv.info; 6224509de14SVakul Garg alt_crypto_info = &ctx->crypto_send.info; 6234509de14SVakul Garg } 624c46234ebSDave Watson 625196c31b4SIlya Lesokhin /* Currently we don't support set crypto info more than one time */ 6261ddcbfbfSZiyang Xuan if (TLS_CRYPTO_INFO_READY(crypto_info)) 6271ddcbfbfSZiyang Xuan return -EBUSY; 628196c31b4SIlya Lesokhin 629a7b75c5aSChristoph Hellwig rc = copy_from_sockptr(crypto_info, optval, sizeof(*crypto_info)); 6303c4d7559SDave Watson if (rc) { 6313c4d7559SDave Watson rc = -EFAULT; 632257082e6SBoris Pismenny goto err_crypto_info; 6333c4d7559SDave Watson } 6343c4d7559SDave Watson 6353c4d7559SDave Watson /* check version */ 636130b392cSDave Watson if (crypto_info->version != TLS_1_2_VERSION && 637130b392cSDave Watson crypto_info->version != TLS_1_3_VERSION) { 6384a5cdc60SValentin Vidic rc = -EINVAL; 639196c31b4SIlya Lesokhin goto err_crypto_info; 6403c4d7559SDave Watson } 6413c4d7559SDave Watson 6424509de14SVakul Garg /* Ensure that TLS version and ciphers are same in both directions */ 6434509de14SVakul Garg if (TLS_CRYPTO_INFO_READY(alt_crypto_info)) { 6444509de14SVakul Garg if (alt_crypto_info->version != crypto_info->version || 6454509de14SVakul Garg alt_crypto_info->cipher_type != crypto_info->cipher_type) { 6464509de14SVakul Garg rc = -EINVAL; 6474509de14SVakul Garg goto err_crypto_info; 6484509de14SVakul Garg } 6494509de14SVakul Garg } 6504509de14SVakul Garg 651196c31b4SIlya Lesokhin switch (crypto_info->cipher_type) { 652fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_128: 653f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_gcm_128); 654f295b3aeSVakul Garg break; 655fb99bce7SDave Watson case TLS_CIPHER_AES_GCM_256: { 656f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_gcm_256); 657f295b3aeSVakul Garg break; 658f295b3aeSVakul Garg } 659f295b3aeSVakul Garg case TLS_CIPHER_AES_CCM_128: 660f295b3aeSVakul Garg optsize = sizeof(struct tls12_crypto_info_aes_ccm_128); 661f295b3aeSVakul Garg break; 66274ea6106SVadim Fedorenko case TLS_CIPHER_CHACHA20_POLY1305: 66374ea6106SVadim Fedorenko optsize = sizeof(struct tls12_crypto_info_chacha20_poly1305); 66474ea6106SVadim Fedorenko break; 665227b9644STianjia Zhang case TLS_CIPHER_SM4_GCM: 666227b9644STianjia Zhang optsize = sizeof(struct tls12_crypto_info_sm4_gcm); 667227b9644STianjia Zhang break; 668227b9644STianjia Zhang case TLS_CIPHER_SM4_CCM: 669227b9644STianjia Zhang optsize = sizeof(struct tls12_crypto_info_sm4_ccm); 670227b9644STianjia Zhang break; 671f295b3aeSVakul Garg default: 672f295b3aeSVakul Garg rc = -EINVAL; 673f295b3aeSVakul Garg goto err_crypto_info; 674f295b3aeSVakul Garg } 675f295b3aeSVakul Garg 676fb99bce7SDave Watson if (optlen != optsize) { 6773c4d7559SDave Watson rc = -EINVAL; 6786db959c8SSabrina Dubroca goto err_crypto_info; 6793c4d7559SDave Watson } 680f295b3aeSVakul Garg 681d3c48151SChristoph Hellwig rc = copy_from_sockptr_offset(crypto_info + 1, optval, 682d3c48151SChristoph Hellwig sizeof(*crypto_info), 683196c31b4SIlya Lesokhin optlen - sizeof(*crypto_info)); 6843c4d7559SDave Watson if (rc) { 6853c4d7559SDave Watson rc = -EFAULT; 6863c4d7559SDave Watson goto err_crypto_info; 6873c4d7559SDave Watson } 6883c4d7559SDave Watson 689c46234ebSDave Watson if (tx) { 690e8f69799SIlya Lesokhin rc = tls_set_device_offload(sk, ctx); 691e8f69799SIlya Lesokhin conf = TLS_HW; 692b32fd3ccSJakub Kicinski if (!rc) { 693b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSTXDEVICE); 694b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXDEVICE); 695b32fd3ccSJakub Kicinski } else { 696c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 1); 697318892acSJakub Kicinski if (rc) 698318892acSJakub Kicinski goto err_crypto_info; 699b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSTXSW); 700b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRTXSW); 701f66de3eeSBoris Pismenny conf = TLS_SW; 702e8f69799SIlya Lesokhin } 703c46234ebSDave Watson } else { 7044799ac81SBoris Pismenny rc = tls_set_device_offload_rx(sk, ctx); 7054799ac81SBoris Pismenny conf = TLS_HW; 706b32fd3ccSJakub Kicinski if (!rc) { 707b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXDEVICE); 708b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXDEVICE); 709b32fd3ccSJakub Kicinski } else { 710c46234ebSDave Watson rc = tls_set_sw_offload(sk, ctx, 0); 711318892acSJakub Kicinski if (rc) 712318892acSJakub Kicinski goto err_crypto_info; 713b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXSW); 714b32fd3ccSJakub Kicinski TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSCURRRXSW); 715f66de3eeSBoris Pismenny conf = TLS_SW; 716c46234ebSDave Watson } 717313ab004SJohn Fastabend tls_sw_strparser_arm(sk, ctx); 7184799ac81SBoris Pismenny } 719c46234ebSDave Watson 720f66de3eeSBoris Pismenny if (tx) 721f66de3eeSBoris Pismenny ctx->tx_conf = conf; 722f66de3eeSBoris Pismenny else 723f66de3eeSBoris Pismenny ctx->rx_conf = conf; 7246d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 725c46234ebSDave Watson if (tx) { 726ee181e52SIlya Lesokhin ctx->sk_write_space = sk->sk_write_space; 727ee181e52SIlya Lesokhin sk->sk_write_space = tls_write_space; 728*84c61fe1SJakub Kicinski } else { 729*84c61fe1SJakub Kicinski struct tls_sw_context_rx *rx_ctx = tls_sw_ctx_rx(ctx); 730*84c61fe1SJakub Kicinski 731*84c61fe1SJakub Kicinski tls_strp_check_rcv(&rx_ctx->strp); 732c46234ebSDave Watson } 7331ddcbfbfSZiyang Xuan return 0; 7343c4d7559SDave Watson 7353c4d7559SDave Watson err_crypto_info: 736c844eb46SSabrina Dubroca memzero_explicit(crypto_info, sizeof(union tls_crypto_context)); 7373c4d7559SDave Watson return rc; 7383c4d7559SDave Watson } 7393c4d7559SDave Watson 740c1318b39SBoris Pismenny static int do_tls_setsockopt_tx_zc(struct sock *sk, sockptr_t optval, 741c1318b39SBoris Pismenny unsigned int optlen) 742c1318b39SBoris Pismenny { 743c1318b39SBoris Pismenny struct tls_context *ctx = tls_get_ctx(sk); 744c1318b39SBoris Pismenny unsigned int value; 745c1318b39SBoris Pismenny 746c1318b39SBoris Pismenny if (sockptr_is_null(optval) || optlen != sizeof(value)) 747c1318b39SBoris Pismenny return -EINVAL; 748c1318b39SBoris Pismenny 749c1318b39SBoris Pismenny if (copy_from_sockptr(&value, optval, sizeof(value))) 750c1318b39SBoris Pismenny return -EFAULT; 751c1318b39SBoris Pismenny 752c1318b39SBoris Pismenny if (value > 1) 753c1318b39SBoris Pismenny return -EINVAL; 754c1318b39SBoris Pismenny 755c1318b39SBoris Pismenny ctx->zerocopy_sendfile = value; 756c1318b39SBoris Pismenny 757c1318b39SBoris Pismenny return 0; 758c1318b39SBoris Pismenny } 759c1318b39SBoris Pismenny 76088527790SJakub Kicinski static int do_tls_setsockopt_no_pad(struct sock *sk, sockptr_t optval, 76188527790SJakub Kicinski unsigned int optlen) 76288527790SJakub Kicinski { 76388527790SJakub Kicinski struct tls_context *ctx = tls_get_ctx(sk); 76488527790SJakub Kicinski u32 val; 76588527790SJakub Kicinski int rc; 76688527790SJakub Kicinski 76788527790SJakub Kicinski if (ctx->prot_info.version != TLS_1_3_VERSION || 76888527790SJakub Kicinski sockptr_is_null(optval) || optlen < sizeof(val)) 76988527790SJakub Kicinski return -EINVAL; 77088527790SJakub Kicinski 77188527790SJakub Kicinski rc = copy_from_sockptr(&val, optval, sizeof(val)); 77288527790SJakub Kicinski if (rc) 77388527790SJakub Kicinski return -EFAULT; 77488527790SJakub Kicinski if (val > 1) 77588527790SJakub Kicinski return -EINVAL; 77688527790SJakub Kicinski rc = check_zeroed_sockptr(optval, sizeof(val), optlen - sizeof(val)); 77788527790SJakub Kicinski if (rc < 1) 77888527790SJakub Kicinski return rc == 0 ? -EINVAL : rc; 77988527790SJakub Kicinski 78088527790SJakub Kicinski lock_sock(sk); 78188527790SJakub Kicinski rc = -EINVAL; 78288527790SJakub Kicinski if (ctx->rx_conf == TLS_SW || ctx->rx_conf == TLS_HW) { 78388527790SJakub Kicinski ctx->rx_no_pad = val; 78488527790SJakub Kicinski tls_update_rx_zc_capable(ctx); 78588527790SJakub Kicinski rc = 0; 78688527790SJakub Kicinski } 78788527790SJakub Kicinski release_sock(sk); 78888527790SJakub Kicinski 78988527790SJakub Kicinski return rc; 79088527790SJakub Kicinski } 79188527790SJakub Kicinski 792a7b75c5aSChristoph Hellwig static int do_tls_setsockopt(struct sock *sk, int optname, sockptr_t optval, 793a7b75c5aSChristoph Hellwig unsigned int optlen) 7943c4d7559SDave Watson { 7953c4d7559SDave Watson int rc = 0; 7963c4d7559SDave Watson 7973c4d7559SDave Watson switch (optname) { 7983c4d7559SDave Watson case TLS_TX: 799c46234ebSDave Watson case TLS_RX: 8003c4d7559SDave Watson lock_sock(sk); 801c46234ebSDave Watson rc = do_tls_setsockopt_conf(sk, optval, optlen, 802c46234ebSDave Watson optname == TLS_TX); 8033c4d7559SDave Watson release_sock(sk); 8043c4d7559SDave Watson break; 805b489a6e5SMaxim Mikityanskiy case TLS_TX_ZEROCOPY_RO: 806c1318b39SBoris Pismenny lock_sock(sk); 807c1318b39SBoris Pismenny rc = do_tls_setsockopt_tx_zc(sk, optval, optlen); 808c1318b39SBoris Pismenny release_sock(sk); 809c1318b39SBoris Pismenny break; 81088527790SJakub Kicinski case TLS_RX_EXPECT_NO_PAD: 81188527790SJakub Kicinski rc = do_tls_setsockopt_no_pad(sk, optval, optlen); 81288527790SJakub Kicinski break; 8133c4d7559SDave Watson default: 8143c4d7559SDave Watson rc = -ENOPROTOOPT; 8153c4d7559SDave Watson break; 8163c4d7559SDave Watson } 8173c4d7559SDave Watson return rc; 8183c4d7559SDave Watson } 8193c4d7559SDave Watson 8203c4d7559SDave Watson static int tls_setsockopt(struct sock *sk, int level, int optname, 821a7b75c5aSChristoph Hellwig sockptr_t optval, unsigned int optlen) 8223c4d7559SDave Watson { 8233c4d7559SDave Watson struct tls_context *ctx = tls_get_ctx(sk); 8243c4d7559SDave Watson 8253c4d7559SDave Watson if (level != SOL_TLS) 826be7bbea1SJakub Kicinski return ctx->sk_proto->setsockopt(sk, level, optname, optval, 827be7bbea1SJakub Kicinski optlen); 8283c4d7559SDave Watson 8293c4d7559SDave Watson return do_tls_setsockopt(sk, optname, optval, optlen); 8303c4d7559SDave Watson } 8313c4d7559SDave Watson 83208700dabSJakub Kicinski struct tls_context *tls_ctx_create(struct sock *sk) 833dd0bed16SAtul Gupta { 834dd0bed16SAtul Gupta struct inet_connection_sock *icsk = inet_csk(sk); 835dd0bed16SAtul Gupta struct tls_context *ctx; 836dd0bed16SAtul Gupta 837c6ec179aSGanesh Goudar ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC); 838dd0bed16SAtul Gupta if (!ctx) 839dd0bed16SAtul Gupta return NULL; 840dd0bed16SAtul Gupta 84179ffe608SJakub Kicinski mutex_init(&ctx->tx_lock); 84215a7dea7SJakub Kicinski rcu_assign_pointer(icsk->icsk_ulp_data, ctx); 843d5bee737SJakub Sitnicki ctx->sk_proto = READ_ONCE(sk->sk_prot); 844c55dcdd4SMaxim Mikityanskiy ctx->sk = sk; 845dd0bed16SAtul Gupta return ctx; 846dd0bed16SAtul Gupta } 847dd0bed16SAtul Gupta 848f3911f73SJakub Kicinski static void build_proto_ops(struct proto_ops ops[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 849f3911f73SJakub Kicinski const struct proto_ops *base) 850f3911f73SJakub Kicinski { 851f3911f73SJakub Kicinski ops[TLS_BASE][TLS_BASE] = *base; 852f3911f73SJakub Kicinski 853f3911f73SJakub Kicinski ops[TLS_SW ][TLS_BASE] = ops[TLS_BASE][TLS_BASE]; 854f3911f73SJakub Kicinski ops[TLS_SW ][TLS_BASE].sendpage_locked = tls_sw_sendpage_locked; 855f3911f73SJakub Kicinski 856f3911f73SJakub Kicinski ops[TLS_BASE][TLS_SW ] = ops[TLS_BASE][TLS_BASE]; 857f3911f73SJakub Kicinski ops[TLS_BASE][TLS_SW ].splice_read = tls_sw_splice_read; 858f3911f73SJakub Kicinski 859f3911f73SJakub Kicinski ops[TLS_SW ][TLS_SW ] = ops[TLS_SW ][TLS_BASE]; 860f3911f73SJakub Kicinski ops[TLS_SW ][TLS_SW ].splice_read = tls_sw_splice_read; 861f3911f73SJakub Kicinski 862f3911f73SJakub Kicinski #ifdef CONFIG_TLS_DEVICE 863f3911f73SJakub Kicinski ops[TLS_HW ][TLS_BASE] = ops[TLS_BASE][TLS_BASE]; 864f3911f73SJakub Kicinski ops[TLS_HW ][TLS_BASE].sendpage_locked = NULL; 865f3911f73SJakub Kicinski 866f3911f73SJakub Kicinski ops[TLS_HW ][TLS_SW ] = ops[TLS_BASE][TLS_SW ]; 867f3911f73SJakub Kicinski ops[TLS_HW ][TLS_SW ].sendpage_locked = NULL; 868f3911f73SJakub Kicinski 869f3911f73SJakub Kicinski ops[TLS_BASE][TLS_HW ] = ops[TLS_BASE][TLS_SW ]; 870f3911f73SJakub Kicinski 871f3911f73SJakub Kicinski ops[TLS_SW ][TLS_HW ] = ops[TLS_SW ][TLS_SW ]; 872f3911f73SJakub Kicinski 873f3911f73SJakub Kicinski ops[TLS_HW ][TLS_HW ] = ops[TLS_HW ][TLS_SW ]; 874f3911f73SJakub Kicinski ops[TLS_HW ][TLS_HW ].sendpage_locked = NULL; 875f3911f73SJakub Kicinski #endif 876f3911f73SJakub Kicinski #ifdef CONFIG_TLS_TOE 877f3911f73SJakub Kicinski ops[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 878f3911f73SJakub Kicinski #endif 879f3911f73SJakub Kicinski } 880f3911f73SJakub Kicinski 88163a6b3feSAtul Gupta static void tls_build_proto(struct sock *sk) 88263a6b3feSAtul Gupta { 88363a6b3feSAtul Gupta int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; 8849a893949SWill Deacon struct proto *prot = READ_ONCE(sk->sk_prot); 88563a6b3feSAtul Gupta 88663a6b3feSAtul Gupta /* Build IPv6 TLS whenever the address of tcpv6 _prot changes */ 88763a6b3feSAtul Gupta if (ip_ver == TLSV6 && 8885bb4c45dSJakub Sitnicki unlikely(prot != smp_load_acquire(&saved_tcpv6_prot))) { 88963a6b3feSAtul Gupta mutex_lock(&tcpv6_prot_mutex); 8905bb4c45dSJakub Sitnicki if (likely(prot != saved_tcpv6_prot)) { 8915bb4c45dSJakub Sitnicki build_protos(tls_prots[TLSV6], prot); 892f3911f73SJakub Kicinski build_proto_ops(tls_proto_ops[TLSV6], 893f3911f73SJakub Kicinski sk->sk_socket->ops); 8945bb4c45dSJakub Sitnicki smp_store_release(&saved_tcpv6_prot, prot); 89563a6b3feSAtul Gupta } 89663a6b3feSAtul Gupta mutex_unlock(&tcpv6_prot_mutex); 89763a6b3feSAtul Gupta } 89863a6b3feSAtul Gupta 89963a6b3feSAtul Gupta if (ip_ver == TLSV4 && 9005bb4c45dSJakub Sitnicki unlikely(prot != smp_load_acquire(&saved_tcpv4_prot))) { 90163a6b3feSAtul Gupta mutex_lock(&tcpv4_prot_mutex); 9025bb4c45dSJakub Sitnicki if (likely(prot != saved_tcpv4_prot)) { 9035bb4c45dSJakub Sitnicki build_protos(tls_prots[TLSV4], prot); 904f3911f73SJakub Kicinski build_proto_ops(tls_proto_ops[TLSV4], 905f3911f73SJakub Kicinski sk->sk_socket->ops); 9065bb4c45dSJakub Sitnicki smp_store_release(&saved_tcpv4_prot, prot); 90763a6b3feSAtul Gupta } 90863a6b3feSAtul Gupta mutex_unlock(&tcpv4_prot_mutex); 90963a6b3feSAtul Gupta } 91063a6b3feSAtul Gupta } 91163a6b3feSAtul Gupta 912f66de3eeSBoris Pismenny static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 913f13fe3e6SJakub Sitnicki const struct proto *base) 914c113187dSBoris Pismenny { 915f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE] = *base; 916f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].setsockopt = tls_setsockopt; 917f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].getsockopt = tls_getsockopt; 918f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_BASE].close = tls_sk_proto_close; 919c113187dSBoris Pismenny 920f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 921f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendmsg = tls_sw_sendmsg; 922f66de3eeSBoris Pismenny prot[TLS_SW][TLS_BASE].sendpage = tls_sw_sendpage; 923c46234ebSDave Watson 924f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW] = prot[TLS_BASE][TLS_BASE]; 925f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].recvmsg = tls_sw_recvmsg; 9267b50ecfcSCong Wang prot[TLS_BASE][TLS_SW].sock_is_readable = tls_sw_sock_is_readable; 927f66de3eeSBoris Pismenny prot[TLS_BASE][TLS_SW].close = tls_sk_proto_close; 928c46234ebSDave Watson 929f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW] = prot[TLS_SW][TLS_BASE]; 930f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].recvmsg = tls_sw_recvmsg; 9317b50ecfcSCong Wang prot[TLS_SW][TLS_SW].sock_is_readable = tls_sw_sock_is_readable; 932f66de3eeSBoris Pismenny prot[TLS_SW][TLS_SW].close = tls_sk_proto_close; 933dd0bed16SAtul Gupta 934e8f69799SIlya Lesokhin #ifdef CONFIG_TLS_DEVICE 935e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE] = prot[TLS_BASE][TLS_BASE]; 936e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendmsg = tls_device_sendmsg; 937e8f69799SIlya Lesokhin prot[TLS_HW][TLS_BASE].sendpage = tls_device_sendpage; 938e8f69799SIlya Lesokhin 939e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW] = prot[TLS_BASE][TLS_SW]; 940e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendmsg = tls_device_sendmsg; 941e8f69799SIlya Lesokhin prot[TLS_HW][TLS_SW].sendpage = tls_device_sendpage; 9424799ac81SBoris Pismenny 9434799ac81SBoris Pismenny prot[TLS_BASE][TLS_HW] = prot[TLS_BASE][TLS_SW]; 9444799ac81SBoris Pismenny 9454799ac81SBoris Pismenny prot[TLS_SW][TLS_HW] = prot[TLS_SW][TLS_SW]; 9464799ac81SBoris Pismenny 9474799ac81SBoris Pismenny prot[TLS_HW][TLS_HW] = prot[TLS_HW][TLS_SW]; 948e8f69799SIlya Lesokhin #endif 94953b4414aSJakub Kicinski #ifdef CONFIG_TLS_TOE 950f66de3eeSBoris Pismenny prot[TLS_HW_RECORD][TLS_HW_RECORD] = *base; 9510eb8745eSJakub Kicinski prot[TLS_HW_RECORD][TLS_HW_RECORD].hash = tls_toe_hash; 9520eb8745eSJakub Kicinski prot[TLS_HW_RECORD][TLS_HW_RECORD].unhash = tls_toe_unhash; 95353b4414aSJakub Kicinski #endif 954c113187dSBoris Pismenny } 955c113187dSBoris Pismenny 9563c4d7559SDave Watson static int tls_init(struct sock *sk) 9573c4d7559SDave Watson { 9583c4d7559SDave Watson struct tls_context *ctx; 9593c4d7559SDave Watson int rc = 0; 9603c4d7559SDave Watson 96116bed0e6SJakub Kicinski tls_build_proto(sk); 96216bed0e6SJakub Kicinski 96353b4414aSJakub Kicinski #ifdef CONFIG_TLS_TOE 9640eb8745eSJakub Kicinski if (tls_toe_bypass(sk)) 96595fa1454SJohn Fastabend return 0; 96653b4414aSJakub Kicinski #endif 967dd0bed16SAtul Gupta 968d91c3e17SIlya Lesokhin /* The TLS ulp is currently supported only for TCP sockets 969d91c3e17SIlya Lesokhin * in ESTABLISHED state. 970d91c3e17SIlya Lesokhin * Supporting sockets in LISTEN state will require us 971d91c3e17SIlya Lesokhin * to modify the accept implementation to clone rather then 972d91c3e17SIlya Lesokhin * share the ulp context. 973d91c3e17SIlya Lesokhin */ 974d91c3e17SIlya Lesokhin if (sk->sk_state != TCP_ESTABLISHED) 9754a5cdc60SValentin Vidic return -ENOTCONN; 976d91c3e17SIlya Lesokhin 9773c4d7559SDave Watson /* allocate tls context */ 97895fa1454SJohn Fastabend write_lock_bh(&sk->sk_callback_lock); 97908700dabSJakub Kicinski ctx = tls_ctx_create(sk); 9803c4d7559SDave Watson if (!ctx) { 9813c4d7559SDave Watson rc = -ENOMEM; 9823c4d7559SDave Watson goto out; 9833c4d7559SDave Watson } 9846d88207fSIlya Lesokhin 985f66de3eeSBoris Pismenny ctx->tx_conf = TLS_BASE; 986f66de3eeSBoris Pismenny ctx->rx_conf = TLS_BASE; 9876d88207fSIlya Lesokhin update_sk_prot(sk, ctx); 9883c4d7559SDave Watson out: 98995fa1454SJohn Fastabend write_unlock_bh(&sk->sk_callback_lock); 9903c4d7559SDave Watson return rc; 9913c4d7559SDave Watson } 9923c4d7559SDave Watson 99333bfe20dSJohn Fastabend static void tls_update(struct sock *sk, struct proto *p, 99433bfe20dSJohn Fastabend void (*write_space)(struct sock *sk)) 99595fa1454SJohn Fastabend { 99695fa1454SJohn Fastabend struct tls_context *ctx; 99795fa1454SJohn Fastabend 998e34a07c0SJakub Kicinski WARN_ON_ONCE(sk->sk_prot == p); 999e34a07c0SJakub Kicinski 100095fa1454SJohn Fastabend ctx = tls_get_ctx(sk); 100133bfe20dSJohn Fastabend if (likely(ctx)) { 100233bfe20dSJohn Fastabend ctx->sk_write_space = write_space; 100395fa1454SJohn Fastabend ctx->sk_proto = p; 100433bfe20dSJohn Fastabend } else { 1005b8e202d1SJakub Sitnicki /* Pairs with lockless read in sk_clone_lock(). */ 1006b8e202d1SJakub Sitnicki WRITE_ONCE(sk->sk_prot, p); 100733bfe20dSJohn Fastabend sk->sk_write_space = write_space; 100833bfe20dSJohn Fastabend } 100995fa1454SJohn Fastabend } 101095fa1454SJohn Fastabend 101158790314SJakub Kicinski static u16 tls_user_config(struct tls_context *ctx, bool tx) 101258790314SJakub Kicinski { 101358790314SJakub Kicinski u16 config = tx ? ctx->tx_conf : ctx->rx_conf; 101458790314SJakub Kicinski 101558790314SJakub Kicinski switch (config) { 101658790314SJakub Kicinski case TLS_BASE: 101758790314SJakub Kicinski return TLS_CONF_BASE; 101858790314SJakub Kicinski case TLS_SW: 101958790314SJakub Kicinski return TLS_CONF_SW; 102058790314SJakub Kicinski case TLS_HW: 102158790314SJakub Kicinski return TLS_CONF_HW; 102258790314SJakub Kicinski case TLS_HW_RECORD: 102358790314SJakub Kicinski return TLS_CONF_HW_RECORD; 102458790314SJakub Kicinski } 102558790314SJakub Kicinski return 0; 102658790314SJakub Kicinski } 102758790314SJakub Kicinski 102826811cc9SDavide Caratti static int tls_get_info(const struct sock *sk, struct sk_buff *skb) 102926811cc9SDavide Caratti { 103026811cc9SDavide Caratti u16 version, cipher_type; 103126811cc9SDavide Caratti struct tls_context *ctx; 103226811cc9SDavide Caratti struct nlattr *start; 103326811cc9SDavide Caratti int err; 103426811cc9SDavide Caratti 103526811cc9SDavide Caratti start = nla_nest_start_noflag(skb, INET_ULP_INFO_TLS); 103626811cc9SDavide Caratti if (!start) 103726811cc9SDavide Caratti return -EMSGSIZE; 103826811cc9SDavide Caratti 103926811cc9SDavide Caratti rcu_read_lock(); 104026811cc9SDavide Caratti ctx = rcu_dereference(inet_csk(sk)->icsk_ulp_data); 104126811cc9SDavide Caratti if (!ctx) { 104226811cc9SDavide Caratti err = 0; 104326811cc9SDavide Caratti goto nla_failure; 104426811cc9SDavide Caratti } 104526811cc9SDavide Caratti version = ctx->prot_info.version; 104626811cc9SDavide Caratti if (version) { 104726811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_VERSION, version); 104826811cc9SDavide Caratti if (err) 104926811cc9SDavide Caratti goto nla_failure; 105026811cc9SDavide Caratti } 105126811cc9SDavide Caratti cipher_type = ctx->prot_info.cipher_type; 105226811cc9SDavide Caratti if (cipher_type) { 105326811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_CIPHER, cipher_type); 105426811cc9SDavide Caratti if (err) 105526811cc9SDavide Caratti goto nla_failure; 105626811cc9SDavide Caratti } 105726811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_TXCONF, tls_user_config(ctx, true)); 105826811cc9SDavide Caratti if (err) 105926811cc9SDavide Caratti goto nla_failure; 106026811cc9SDavide Caratti 106126811cc9SDavide Caratti err = nla_put_u16(skb, TLS_INFO_RXCONF, tls_user_config(ctx, false)); 106226811cc9SDavide Caratti if (err) 106326811cc9SDavide Caratti goto nla_failure; 106426811cc9SDavide Caratti 1065c1318b39SBoris Pismenny if (ctx->tx_conf == TLS_HW && ctx->zerocopy_sendfile) { 1066b489a6e5SMaxim Mikityanskiy err = nla_put_flag(skb, TLS_INFO_ZC_RO_TX); 1067c1318b39SBoris Pismenny if (err) 1068c1318b39SBoris Pismenny goto nla_failure; 1069c1318b39SBoris Pismenny } 107088527790SJakub Kicinski if (ctx->rx_no_pad) { 107188527790SJakub Kicinski err = nla_put_flag(skb, TLS_INFO_RX_NO_PAD); 107288527790SJakub Kicinski if (err) 107388527790SJakub Kicinski goto nla_failure; 107488527790SJakub Kicinski } 1075c1318b39SBoris Pismenny 107626811cc9SDavide Caratti rcu_read_unlock(); 107726811cc9SDavide Caratti nla_nest_end(skb, start); 107826811cc9SDavide Caratti return 0; 107926811cc9SDavide Caratti 108026811cc9SDavide Caratti nla_failure: 108126811cc9SDavide Caratti rcu_read_unlock(); 108226811cc9SDavide Caratti nla_nest_cancel(skb, start); 108326811cc9SDavide Caratti return err; 108426811cc9SDavide Caratti } 108526811cc9SDavide Caratti 108626811cc9SDavide Caratti static size_t tls_get_info_size(const struct sock *sk) 108726811cc9SDavide Caratti { 108826811cc9SDavide Caratti size_t size = 0; 108926811cc9SDavide Caratti 109026811cc9SDavide Caratti size += nla_total_size(0) + /* INET_ULP_INFO_TLS */ 109126811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_VERSION */ 109226811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_CIPHER */ 109326811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_RXCONF */ 109426811cc9SDavide Caratti nla_total_size(sizeof(u16)) + /* TLS_INFO_TXCONF */ 1095b489a6e5SMaxim Mikityanskiy nla_total_size(0) + /* TLS_INFO_ZC_RO_TX */ 109688527790SJakub Kicinski nla_total_size(0) + /* TLS_INFO_RX_NO_PAD */ 109726811cc9SDavide Caratti 0; 109826811cc9SDavide Caratti 109926811cc9SDavide Caratti return size; 110026811cc9SDavide Caratti } 110126811cc9SDavide Caratti 1102d26b698dSJakub Kicinski static int __net_init tls_init_net(struct net *net) 1103d26b698dSJakub Kicinski { 1104d26b698dSJakub Kicinski int err; 1105d26b698dSJakub Kicinski 1106d26b698dSJakub Kicinski net->mib.tls_statistics = alloc_percpu(struct linux_tls_mib); 1107d26b698dSJakub Kicinski if (!net->mib.tls_statistics) 1108d26b698dSJakub Kicinski return -ENOMEM; 1109d26b698dSJakub Kicinski 1110d26b698dSJakub Kicinski err = tls_proc_init(net); 1111d26b698dSJakub Kicinski if (err) 1112d26b698dSJakub Kicinski goto err_free_stats; 1113d26b698dSJakub Kicinski 1114d26b698dSJakub Kicinski return 0; 1115d26b698dSJakub Kicinski err_free_stats: 1116d26b698dSJakub Kicinski free_percpu(net->mib.tls_statistics); 1117d26b698dSJakub Kicinski return err; 1118d26b698dSJakub Kicinski } 1119d26b698dSJakub Kicinski 1120d26b698dSJakub Kicinski static void __net_exit tls_exit_net(struct net *net) 1121d26b698dSJakub Kicinski { 1122d26b698dSJakub Kicinski tls_proc_fini(net); 1123d26b698dSJakub Kicinski free_percpu(net->mib.tls_statistics); 1124d26b698dSJakub Kicinski } 1125d26b698dSJakub Kicinski 1126d26b698dSJakub Kicinski static struct pernet_operations tls_proc_ops = { 1127d26b698dSJakub Kicinski .init = tls_init_net, 1128d26b698dSJakub Kicinski .exit = tls_exit_net, 1129d26b698dSJakub Kicinski }; 1130d26b698dSJakub Kicinski 11313c4d7559SDave Watson static struct tcp_ulp_ops tcp_tls_ulp_ops __read_mostly = { 11323c4d7559SDave Watson .name = "tls", 11333c4d7559SDave Watson .owner = THIS_MODULE, 11343c4d7559SDave Watson .init = tls_init, 113595fa1454SJohn Fastabend .update = tls_update, 113626811cc9SDavide Caratti .get_info = tls_get_info, 113726811cc9SDavide Caratti .get_info_size = tls_get_info_size, 11383c4d7559SDave Watson }; 11393c4d7559SDave Watson 11403c4d7559SDave Watson static int __init tls_register(void) 11413c4d7559SDave Watson { 1142d26b698dSJakub Kicinski int err; 1143d26b698dSJakub Kicinski 1144d26b698dSJakub Kicinski err = register_pernet_subsys(&tls_proc_ops); 1145d26b698dSJakub Kicinski if (err) 1146d26b698dSJakub Kicinski return err; 1147d26b698dSJakub Kicinski 1148*84c61fe1SJakub Kicinski err = tls_strp_dev_init(); 1149*84c61fe1SJakub Kicinski if (err) 1150*84c61fe1SJakub Kicinski goto err_pernet; 1151*84c61fe1SJakub Kicinski 11523d8c51b2STariq Toukan err = tls_device_init(); 1153*84c61fe1SJakub Kicinski if (err) 1154*84c61fe1SJakub Kicinski goto err_strp; 11553d8c51b2STariq Toukan 11563c4d7559SDave Watson tcp_register_ulp(&tcp_tls_ulp_ops); 11573c4d7559SDave Watson 11583c4d7559SDave Watson return 0; 1159*84c61fe1SJakub Kicinski err_strp: 1160*84c61fe1SJakub Kicinski tls_strp_dev_exit(); 1161*84c61fe1SJakub Kicinski err_pernet: 1162*84c61fe1SJakub Kicinski unregister_pernet_subsys(&tls_proc_ops); 1163*84c61fe1SJakub Kicinski return err; 11643c4d7559SDave Watson } 11653c4d7559SDave Watson 11663c4d7559SDave Watson static void __exit tls_unregister(void) 11673c4d7559SDave Watson { 11683c4d7559SDave Watson tcp_unregister_ulp(&tcp_tls_ulp_ops); 1169*84c61fe1SJakub Kicinski tls_strp_dev_exit(); 1170e8f69799SIlya Lesokhin tls_device_cleanup(); 1171d26b698dSJakub Kicinski unregister_pernet_subsys(&tls_proc_ops); 11723c4d7559SDave Watson } 11733c4d7559SDave Watson 11743c4d7559SDave Watson module_init(tls_register); 11753c4d7559SDave Watson module_exit(tls_unregister); 1176