From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G
---
kernel/include/net/tls.h | 646 +++++++++++++++++++++++++++++++++++++++++++---------------
1 files changed, 476 insertions(+), 170 deletions(-)
diff --git a/kernel/include/net/tls.h b/kernel/include/net/tls.h
index 9caef9b..419a67c 100644
--- a/kernel/include/net/tls.h
+++ b/kernel/include/net/tls.h
@@ -39,9 +39,16 @@
#include <linux/crypto.h>
#include <linux/socket.h>
#include <linux/tcp.h>
+#include <linux/skmsg.h>
+#include <linux/mutex.h>
+#include <linux/netdevice.h>
+#include <linux/rcupdate.h>
+#include <linux/android_kabi.h>
+
+#include <net/net_namespace.h>
#include <net/tcp.h>
#include <net/strparser.h>
-
+#include <crypto/aead.h>
#include <uapi/linux/tls.h>
@@ -56,74 +63,111 @@
#define TLS_RECORD_TYPE_DATA 0x17
#define TLS_AAD_SPACE_SIZE 13
-#define TLS_DEVICE_NAME_MAX 32
-/*
- * This structure defines the routines for Inline TLS driver.
- * The following routines are optional and filled with a
- * null pointer if not defined.
+#define MAX_IV_SIZE 16
+#define TLS_MAX_REC_SEQ_SIZE 8
+
+/* For AES-CCM, the full 16-bytes of IV is made of '4' fields of given sizes.
*
- * @name: Its the name of registered Inline tls device
- * @dev_list: Inline tls device list
- * int (*feature)(struct tls_device *device);
- * Called to return Inline TLS driver capability
+ * IV[16] = b0[1] || implicit nonce[4] || explicit nonce[8] || length[3]
*
- * int (*hash)(struct tls_device *device, struct sock *sk);
- * This function sets Inline driver for listen and program
- * device specific functioanlity as required
- *
- * void (*unhash)(struct tls_device *device, struct sock *sk);
- * This function cleans listen state set by Inline TLS driver
+ * The field 'length' is encoded in field 'b0' as '(length width - 1)'.
+ * Hence b0 contains (3 - 1) = 2.
*/
-struct tls_device {
- char name[TLS_DEVICE_NAME_MAX];
- struct list_head dev_list;
- int (*feature)(struct tls_device *device);
- int (*hash)(struct tls_device *device, struct sock *sk);
- void (*unhash)(struct tls_device *device, struct sock *sk);
-};
+#define TLS_AES_CCM_IV_B0_BYTE 2
+
+#define __TLS_INC_STATS(net, field) \
+ __SNMP_INC_STATS((net)->mib.tls_statistics, field)
+#define TLS_INC_STATS(net, field) \
+ SNMP_INC_STATS((net)->mib.tls_statistics, field)
+#define __TLS_DEC_STATS(net, field) \
+ __SNMP_DEC_STATS((net)->mib.tls_statistics, field)
+#define TLS_DEC_STATS(net, field) \
+ SNMP_DEC_STATS((net)->mib.tls_statistics, field)
enum {
TLS_BASE,
TLS_SW,
-#ifdef CONFIG_TLS_DEVICE
TLS_HW,
-#endif
TLS_HW_RECORD,
TLS_NUM_CONFIG,
+};
+
+/* TLS records are maintained in 'struct tls_rec'. It stores the memory pages
+ * allocated or mapped for each TLS record. After encryption, the records are
+ * stores in a linked list.
+ */
+struct tls_rec {
+ struct list_head list;
+ int tx_ready;
+ int tx_flags;
+
+ struct sk_msg msg_plaintext;
+ struct sk_msg msg_encrypted;
+
+ /* AAD | msg_plaintext.sg.data | sg_tag */
+ struct scatterlist sg_aead_in[2];
+ /* AAD | msg_encrypted.sg.data (data contains overhead for hdr & iv & tag) */
+ struct scatterlist sg_aead_out[2];
+
+ char content_type;
+ struct scatterlist sg_content_type;
+
+ char aad_space[TLS_AAD_SPACE_SIZE];
+ u8 iv_data[MAX_IV_SIZE];
+ struct aead_request aead_req;
+
+ ANDROID_KABI_RESERVE(1);
+
+ u8 aead_req_ctx[];
+};
+
+struct tls_msg {
+ struct strp_msg rxm;
+ u8 control;
+};
+
+struct tx_work {
+ struct delayed_work work;
+ struct sock *sk;
};
struct tls_sw_context_tx {
struct crypto_aead *aead_send;
struct crypto_wait async_wait;
+ struct tx_work tx_work;
+ struct tls_rec *open_rec;
+ struct list_head tx_list;
+ atomic_t encrypt_pending;
+ /* protect crypto_wait with encrypt_pending */
+ spinlock_t encrypt_compl_lock;
+ int async_notify;
+ u8 async_capable:1;
- char aad_space[TLS_AAD_SPACE_SIZE];
+#define BIT_TX_SCHEDULED 0
+#define BIT_TX_CLOSING 1
+ unsigned long tx_bitmask;
- unsigned int sg_plaintext_size;
- int sg_plaintext_num_elem;
- struct scatterlist sg_plaintext_data[MAX_SKB_FRAGS];
-
- unsigned int sg_encrypted_size;
- int sg_encrypted_num_elem;
- struct scatterlist sg_encrypted_data[MAX_SKB_FRAGS];
-
- /* AAD | sg_plaintext_data | sg_tag */
- struct scatterlist sg_aead_in[2];
- /* AAD | sg_encrypted_data (data contain overhead for hdr&iv&tag) */
- struct scatterlist sg_aead_out[2];
+ ANDROID_KABI_RESERVE(1);
};
struct tls_sw_context_rx {
struct crypto_aead *aead_recv;
struct crypto_wait async_wait;
-
struct strparser strp;
+ struct sk_buff_head rx_list; /* list of decrypted 'data' records */
void (*saved_data_ready)(struct sock *sk);
- unsigned int (*sk_poll)(struct file *file, struct socket *sock,
- struct poll_table_struct *wait);
+
struct sk_buff *recv_pkt;
u8 control;
- bool decrypted;
+ u8 async_capable:1;
+ u8 decrypted:1;
+ atomic_t decrypt_pending;
+ /* protect crypto_wait with decrypt_pending*/
+ spinlock_t decrypt_compl_lock;
+ bool async_notify;
+
+ ANDROID_KABI_RESERVE(1);
};
struct tls_record_info {
@@ -145,24 +189,28 @@
struct scatterlist sg_tx_data[MAX_SKB_FRAGS];
void (*sk_destruct)(struct sock *sk);
- u8 driver_state[];
+ u8 driver_state[] __aligned(8);
/* The TLS layer reserves room for driver specific state
* Currently the belief is that there is not enough
* driver specific state to justify another layer of indirection
*/
-#define TLS_DRIVER_STATE_SIZE (max_t(size_t, 8, sizeof(void *)))
+#define TLS_DRIVER_STATE_SIZE_TX 16
};
#define TLS_OFFLOAD_CONTEXT_SIZE_TX \
- (ALIGN(sizeof(struct tls_offload_context_tx), sizeof(void *)) + \
- TLS_DRIVER_STATE_SIZE)
-
-enum {
- TLS_PENDING_CLOSED_RECORD
-};
+ (sizeof(struct tls_offload_context_tx) + TLS_DRIVER_STATE_SIZE_TX)
enum tls_context_flags {
- TLS_RX_SYNC_RUNNING = 0,
+ /* tls_device_down was called after the netdev went down, device state
+ * was released, and kTLS works in software, even though rx_conf is
+ * still TLS_HW (needed for transition).
+ */
+ TLS_RX_DEV_DEGRADED = 0,
+ /* Unlike RX where resync is driven entirely by the core in TX only
+ * the driver knows when things went out of sync, so we need the flag
+ * to be atomic.
+ */
+ TLS_TX_SYNC_SCHED = 1,
/* tls_dev_del was called for the RX side, device state was released,
* but tls_ctx->netdev might still be kept, because TX-side driver
* resources might not be released yet. Used to prevent the second
@@ -172,104 +220,186 @@
};
struct cipher_context {
- u16 prepend_size;
- u16 tag_size;
- u16 overhead_size;
- u16 iv_size;
char *iv;
- u16 rec_seq_size;
char *rec_seq;
};
union tls_crypto_context {
struct tls_crypto_info info;
- struct tls12_crypto_info_aes_gcm_128 aes_gcm_128;
+ union {
+ struct tls12_crypto_info_aes_gcm_128 aes_gcm_128;
+ struct tls12_crypto_info_aes_gcm_256 aes_gcm_256;
+ };
+};
+
+struct tls_prot_info {
+ u16 version;
+ u16 cipher_type;
+ u16 prepend_size;
+ u16 tag_size;
+ u16 overhead_size;
+ u16 iv_size;
+ u16 salt_size;
+ u16 rec_seq_size;
+ u16 aad_size;
+ u16 tail_size;
};
struct tls_context {
- union tls_crypto_context crypto_send;
- union tls_crypto_context crypto_recv;
-
- struct list_head list;
- struct net_device *netdev;
- refcount_t refcount;
-
- void *priv_ctx_tx;
- void *priv_ctx_rx;
+ /* read-only cache line */
+ struct tls_prot_info prot_info;
u8 tx_conf:3;
u8 rx_conf:3;
+ int (*push_pending_record)(struct sock *sk, int flags);
+ void (*sk_write_space)(struct sock *sk);
+
+ void *priv_ctx_tx;
+ void *priv_ctx_rx;
+
+ struct net_device *netdev;
+
+ /* rw cache line */
struct cipher_context tx;
struct cipher_context rx;
struct scatterlist *partially_sent_record;
u16 partially_sent_offset;
- unsigned long flags;
+
bool in_tcp_sendpages;
+ bool pending_open_record_frags;
- u16 pending_open_record_frags;
- int (*push_pending_record)(struct sock *sk, int flags);
+ struct mutex tx_lock; /* protects partially_sent_* fields and
+ * per-type TX fields
+ */
+ unsigned long flags;
- void (*sk_write_space)(struct sock *sk);
+ /* cache cold stuff */
+ struct proto *sk_proto;
+ struct sock *sk;
+
void (*sk_destruct)(struct sock *sk);
- void (*sk_proto_close)(struct sock *sk, long timeout);
- int (*setsockopt)(struct sock *sk, int level,
- int optname, char __user *optval,
- unsigned int optlen);
- int (*getsockopt)(struct sock *sk, int level,
- int optname, char __user *optval,
- int __user *optlen);
- int (*hash)(struct sock *sk);
- void (*unhash)(struct sock *sk);
+ union tls_crypto_context crypto_send;
+ union tls_crypto_context crypto_recv;
+
+ struct list_head list;
+ refcount_t refcount;
+ struct rcu_head rcu;
+};
+
+enum tls_offload_ctx_dir {
+ TLS_OFFLOAD_CTX_DIR_RX,
+ TLS_OFFLOAD_CTX_DIR_TX,
+};
+
+struct tlsdev_ops {
+ int (*tls_dev_add)(struct net_device *netdev, struct sock *sk,
+ enum tls_offload_ctx_dir direction,
+ struct tls_crypto_info *crypto_info,
+ u32 start_offload_tcp_sn);
+ void (*tls_dev_del)(struct net_device *netdev,
+ struct tls_context *ctx,
+ enum tls_offload_ctx_dir direction);
+ int (*tls_dev_resync)(struct net_device *netdev,
+ struct sock *sk, u32 seq, u8 *rcd_sn,
+ enum tls_offload_ctx_dir direction);
+
+ ANDROID_KABI_RESERVE(1);
+ ANDROID_KABI_RESERVE(2);
+ ANDROID_KABI_RESERVE(3);
+ ANDROID_KABI_RESERVE(4);
+
+};
+
+enum tls_offload_sync_type {
+ TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ = 0,
+ TLS_OFFLOAD_SYNC_TYPE_CORE_NEXT_HINT = 1,
+ TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ_ASYNC = 2,
+};
+
+#define TLS_DEVICE_RESYNC_NH_START_IVAL 2
+#define TLS_DEVICE_RESYNC_NH_MAX_IVAL 128
+
+#define TLS_DEVICE_RESYNC_ASYNC_LOGMAX 13
+struct tls_offload_resync_async {
+ atomic64_t req;
+ u16 loglen;
+ u16 rcd_delta;
+ u32 log[TLS_DEVICE_RESYNC_ASYNC_LOGMAX];
};
struct tls_offload_context_rx {
/* sw must be the first member of tls_offload_context_rx */
struct tls_sw_context_rx sw;
- atomic64_t resync_req;
- u8 driver_state[];
+ enum tls_offload_sync_type resync_type;
+ /* this member is set regardless of resync_type, to avoid branches */
+ u8 resync_nh_reset:1;
+ /* CORE_NEXT_HINT-only member, but use the hole here */
+ u8 resync_nh_do_now:1;
+ union {
+ /* TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ */
+ struct {
+ atomic64_t resync_req;
+ };
+ /* TLS_OFFLOAD_SYNC_TYPE_CORE_NEXT_HINT */
+ struct {
+ u32 decrypted_failed;
+ u32 decrypted_tgt;
+ } resync_nh;
+ /* TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ_ASYNC */
+ struct {
+ struct tls_offload_resync_async *resync_async;
+ };
+ };
+ u8 driver_state[] __aligned(8);
/* The TLS layer reserves room for driver specific state
* Currently the belief is that there is not enough
* driver specific state to justify another layer of indirection
*/
+#define TLS_DRIVER_STATE_SIZE_RX 8
};
#define TLS_OFFLOAD_CONTEXT_SIZE_RX \
- (ALIGN(sizeof(struct tls_offload_context_rx), sizeof(void *)) + \
- TLS_DRIVER_STATE_SIZE)
+ (sizeof(struct tls_offload_context_rx) + TLS_DRIVER_STATE_SIZE_RX)
-void tls_ctx_free(struct tls_context *ctx);
+struct tls_context *tls_ctx_create(struct sock *sk);
+void tls_ctx_free(struct sock *sk, struct tls_context *ctx);
+void update_sk_prot(struct sock *sk, struct tls_context *ctx);
+
int wait_on_pending_writer(struct sock *sk, long *timeo);
int tls_sk_query(struct sock *sk, int optname, char __user *optval,
int __user *optlen);
int tls_sk_attach(struct sock *sk, int optname, char __user *optval,
unsigned int optlen);
+void tls_err_abort(struct sock *sk, int err);
int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx, int tx);
+void tls_sw_strparser_arm(struct sock *sk, struct tls_context *ctx);
+void tls_sw_strparser_done(struct tls_context *tls_ctx);
int tls_sw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size);
+int tls_sw_sendpage_locked(struct sock *sk, struct page *page,
+ int offset, size_t size, int flags);
int tls_sw_sendpage(struct sock *sk, struct page *page,
int offset, size_t size, int flags);
-void tls_sw_close(struct sock *sk, long timeout);
-void tls_sw_free_resources_tx(struct sock *sk);
+void tls_sw_cancel_work_tx(struct tls_context *tls_ctx);
+void tls_sw_release_resources_tx(struct sock *sk);
+void tls_sw_free_ctx_tx(struct tls_context *tls_ctx);
void tls_sw_free_resources_rx(struct sock *sk);
void tls_sw_release_resources_rx(struct sock *sk);
+void tls_sw_free_ctx_rx(struct tls_context *tls_ctx);
int tls_sw_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
int nonblock, int flags, int *addr_len);
-unsigned int tls_sw_poll(struct file *file, struct socket *sock,
- struct poll_table_struct *wait);
+bool tls_sw_stream_read(const struct sock *sk);
ssize_t tls_sw_splice_read(struct socket *sock, loff_t *ppos,
struct pipe_inode_info *pipe,
size_t len, unsigned int flags);
-int tls_set_device_offload(struct sock *sk, struct tls_context *ctx);
int tls_device_sendmsg(struct sock *sk, struct msghdr *msg, size_t size);
int tls_device_sendpage(struct sock *sk, struct page *page,
int offset, size_t size, int flags);
-void tls_device_sk_destruct(struct sock *sk);
-void tls_device_init(void);
-void tls_device_cleanup(void);
+int tls_tx_records(struct sock *sk, int flags);
struct tls_record_info *tls_get_record(struct tls_offload_context_tx *context,
u32 seq, u64 *p_record_sn);
@@ -284,31 +414,16 @@
return rec->end_seq - rec->len;
}
-void tls_sk_destruct(struct sock *sk, struct tls_context *ctx);
int tls_push_sg(struct sock *sk, struct tls_context *ctx,
struct scatterlist *sg, u16 first_offset,
int flags);
-int tls_push_pending_closed_record(struct sock *sk, struct tls_context *ctx,
- int flags, long *timeo);
+int tls_push_partial_record(struct sock *sk, struct tls_context *ctx,
+ int flags);
+void tls_free_partial_record(struct sock *sk, struct tls_context *ctx);
-static inline bool tls_is_pending_closed_record(struct tls_context *ctx)
+static inline struct tls_msg *tls_msg(struct sk_buff *skb)
{
- return test_bit(TLS_PENDING_CLOSED_RECORD, &ctx->flags);
-}
-
-static inline int tls_complete_pending_work(struct sock *sk,
- struct tls_context *ctx,
- int flags, long *timeo)
-{
- int rc = 0;
-
- if (unlikely(sk->sk_write_pending))
- rc = wait_on_pending_writer(sk, timeo);
-
- if (!rc && tls_is_pending_closed_record(ctx))
- rc = tls_push_pending_closed_record(sk, ctx, flags, timeo);
-
- return rc;
+ return (struct tls_msg *)strp_msg(skb);
}
static inline bool tls_is_partially_sent_record(struct tls_context *ctx)
@@ -321,9 +436,40 @@
return tls_ctx->pending_open_record_frags;
}
+static inline bool is_tx_ready(struct tls_sw_context_tx *ctx)
+{
+ struct tls_rec *rec;
+
+ rec = list_first_entry(&ctx->tx_list, struct tls_rec, list);
+ if (!rec)
+ return false;
+
+ return READ_ONCE(rec->tx_ready);
+}
+
+static inline u16 tls_user_config(struct tls_context *ctx, bool tx)
+{
+ u16 config = tx ? ctx->tx_conf : ctx->rx_conf;
+
+ switch (config) {
+ case TLS_BASE:
+ return TLS_CONF_BASE;
+ case TLS_SW:
+ return TLS_CONF_SW;
+ case TLS_HW:
+ return TLS_CONF_HW;
+ case TLS_HW_RECORD:
+ return TLS_CONF_HW_RECORD;
+ }
+ return 0;
+}
+
struct sk_buff *
tls_validate_xmit_skb(struct sock *sk, struct net_device *dev,
struct sk_buff *skb);
+struct sk_buff *
+tls_validate_xmit_skb_sw(struct sock *sk, struct net_device *dev,
+ struct sk_buff *skb);
static inline bool tls_is_sk_tx_device_offloaded(struct sock *sk)
{
@@ -334,12 +480,6 @@
#else
return false;
#endif
-}
-
-static inline void tls_err_abort(struct sock *sk, int err)
-{
- sk->sk_err = err;
- sk->sk_error_report(sk);
}
static inline bool tls_bigint_increment(unsigned char *seq, int len)
@@ -355,58 +495,102 @@
return (i == -1);
}
-static inline void tls_advance_record_sn(struct sock *sk,
- struct cipher_context *ctx)
+static inline void tls_bigint_subtract(unsigned char *seq, int n)
{
- if (tls_bigint_increment(ctx->rec_seq, ctx->rec_seq_size))
- tls_err_abort(sk, EBADMSG);
- tls_bigint_increment(ctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE,
- ctx->iv_size);
-}
+ u64 rcd_sn;
+ __be64 *p;
-static inline void tls_fill_prepend(struct tls_context *ctx,
- char *buf,
- size_t plaintext_len,
- unsigned char record_type)
-{
- size_t pkt_len, iv_size = ctx->tx.iv_size;
+ BUILD_BUG_ON(TLS_MAX_REC_SEQ_SIZE != 8);
- pkt_len = plaintext_len + iv_size + ctx->tx.tag_size;
-
- /* we cover nonce explicit here as well, so buf should be of
- * size KTLS_DTLS_HEADER_SIZE + KTLS_DTLS_NONCE_EXPLICIT_SIZE
- */
- buf[0] = record_type;
- buf[1] = TLS_VERSION_MINOR(ctx->crypto_send.info.version);
- buf[2] = TLS_VERSION_MAJOR(ctx->crypto_send.info.version);
- /* we can use IV for nonce explicit according to spec */
- buf[3] = pkt_len >> 8;
- buf[4] = pkt_len & 0xFF;
- memcpy(buf + TLS_NONCE_OFFSET,
- ctx->tx.iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, iv_size);
-}
-
-static inline void tls_make_aad(char *buf,
- size_t size,
- char *record_sequence,
- int record_sequence_size,
- unsigned char record_type)
-{
- memcpy(buf, record_sequence, record_sequence_size);
-
- buf[8] = record_type;
- buf[9] = TLS_1_2_VERSION_MAJOR;
- buf[10] = TLS_1_2_VERSION_MINOR;
- buf[11] = size >> 8;
- buf[12] = size & 0xFF;
+ p = (__be64 *)seq;
+ rcd_sn = be64_to_cpu(*p);
+ *p = cpu_to_be64(rcd_sn - n);
}
static inline struct tls_context *tls_get_ctx(const struct sock *sk)
{
struct inet_connection_sock *icsk = inet_csk(sk);
- return icsk->icsk_ulp_data;
+ /* Use RCU on icsk_ulp_data only for sock diag code,
+ * TLS data path doesn't need rcu_dereference().
+ */
+ return (__force void *)icsk->icsk_ulp_data;
}
+
+static inline void tls_advance_record_sn(struct sock *sk,
+ struct tls_prot_info *prot,
+ struct cipher_context *ctx)
+{
+ if (tls_bigint_increment(ctx->rec_seq, prot->rec_seq_size))
+ tls_err_abort(sk, -EBADMSG);
+
+ if (prot->version != TLS_1_3_VERSION)
+ tls_bigint_increment(ctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE,
+ prot->iv_size);
+}
+
+static inline void tls_fill_prepend(struct tls_context *ctx,
+ char *buf,
+ size_t plaintext_len,
+ unsigned char record_type,
+ int version)
+{
+ struct tls_prot_info *prot = &ctx->prot_info;
+ size_t pkt_len, iv_size = prot->iv_size;
+
+ pkt_len = plaintext_len + prot->tag_size;
+ if (version != TLS_1_3_VERSION) {
+ pkt_len += iv_size;
+
+ memcpy(buf + TLS_NONCE_OFFSET,
+ ctx->tx.iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, iv_size);
+ }
+
+ /* we cover nonce explicit here as well, so buf should be of
+ * size KTLS_DTLS_HEADER_SIZE + KTLS_DTLS_NONCE_EXPLICIT_SIZE
+ */
+ buf[0] = version == TLS_1_3_VERSION ?
+ TLS_RECORD_TYPE_DATA : record_type;
+ /* Note that VERSION must be TLS_1_2 for both TLS1.2 and TLS1.3 */
+ buf[1] = TLS_1_2_VERSION_MINOR;
+ buf[2] = TLS_1_2_VERSION_MAJOR;
+ /* we can use IV for nonce explicit according to spec */
+ buf[3] = pkt_len >> 8;
+ buf[4] = pkt_len & 0xFF;
+}
+
+static inline void tls_make_aad(char *buf,
+ size_t size,
+ char *record_sequence,
+ int record_sequence_size,
+ unsigned char record_type,
+ int version)
+{
+ if (version != TLS_1_3_VERSION) {
+ memcpy(buf, record_sequence, record_sequence_size);
+ buf += 8;
+ } else {
+ size += TLS_CIPHER_AES_GCM_128_TAG_SIZE;
+ }
+
+ buf[0] = version == TLS_1_3_VERSION ?
+ TLS_RECORD_TYPE_DATA : record_type;
+ buf[1] = TLS_1_2_VERSION_MAJOR;
+ buf[2] = TLS_1_2_VERSION_MINOR;
+ buf[3] = size >> 8;
+ buf[4] = size & 0xFF;
+}
+
+static inline void xor_iv_with_seq(int version, char *iv, char *seq)
+{
+ int i;
+
+ if (version == TLS_1_3_VERSION) {
+ for (i = 0; i < 8; i++)
+ iv[i + 4] ^= seq[i];
+ }
+}
+
static inline struct tls_sw_context_rx *tls_sw_ctx_rx(
const struct tls_context *tls_ctx)
@@ -426,41 +610,163 @@
return (struct tls_offload_context_tx *)tls_ctx->priv_ctx_tx;
}
+static inline bool tls_sw_has_ctx_tx(const struct sock *sk)
+{
+ struct tls_context *ctx = tls_get_ctx(sk);
+
+ if (!ctx)
+ return false;
+ return !!tls_sw_ctx_tx(ctx);
+}
+
+static inline bool tls_sw_has_ctx_rx(const struct sock *sk)
+{
+ struct tls_context *ctx = tls_get_ctx(sk);
+
+ if (!ctx)
+ return false;
+ return !!tls_sw_ctx_rx(ctx);
+}
+
+void tls_sw_write_space(struct sock *sk, struct tls_context *ctx);
+void tls_device_write_space(struct sock *sk, struct tls_context *ctx);
+
static inline struct tls_offload_context_rx *
tls_offload_ctx_rx(const struct tls_context *tls_ctx)
{
return (struct tls_offload_context_rx *)tls_ctx->priv_ctx_rx;
}
+#if IS_ENABLED(CONFIG_TLS_DEVICE)
+static inline void *__tls_driver_ctx(struct tls_context *tls_ctx,
+ enum tls_offload_ctx_dir direction)
+{
+ if (direction == TLS_OFFLOAD_CTX_DIR_TX)
+ return tls_offload_ctx_tx(tls_ctx)->driver_state;
+ else
+ return tls_offload_ctx_rx(tls_ctx)->driver_state;
+}
+
+static inline void *
+tls_driver_ctx(const struct sock *sk, enum tls_offload_ctx_dir direction)
+{
+ return __tls_driver_ctx(tls_get_ctx(sk), direction);
+}
+#endif
+
+#define RESYNC_REQ BIT(0)
+#define RESYNC_REQ_ASYNC BIT(1)
/* The TLS context is valid until sk_destruct is called */
static inline void tls_offload_rx_resync_request(struct sock *sk, __be32 seq)
{
struct tls_context *tls_ctx = tls_get_ctx(sk);
struct tls_offload_context_rx *rx_ctx = tls_offload_ctx_rx(tls_ctx);
- atomic64_set(&rx_ctx->resync_req, ((((uint64_t)seq) << 32) | 1));
+ atomic64_set(&rx_ctx->resync_req, ((u64)ntohl(seq) << 32) | RESYNC_REQ);
}
+/* Log all TLS record header TCP sequences in [seq, seq+len] */
+static inline void
+tls_offload_rx_resync_async_request_start(struct sock *sk, __be32 seq, u16 len)
+{
+ struct tls_context *tls_ctx = tls_get_ctx(sk);
+ struct tls_offload_context_rx *rx_ctx = tls_offload_ctx_rx(tls_ctx);
+
+ atomic64_set(&rx_ctx->resync_async->req, ((u64)ntohl(seq) << 32) |
+ ((u64)len << 16) | RESYNC_REQ | RESYNC_REQ_ASYNC);
+ rx_ctx->resync_async->loglen = 0;
+ rx_ctx->resync_async->rcd_delta = 0;
+}
+
+static inline void
+tls_offload_rx_resync_async_request_end(struct sock *sk, __be32 seq)
+{
+ struct tls_context *tls_ctx = tls_get_ctx(sk);
+ struct tls_offload_context_rx *rx_ctx = tls_offload_ctx_rx(tls_ctx);
+
+ atomic64_set(&rx_ctx->resync_async->req,
+ ((u64)ntohl(seq) << 32) | RESYNC_REQ);
+}
+
+static inline void
+tls_offload_rx_resync_set_type(struct sock *sk, enum tls_offload_sync_type type)
+{
+ struct tls_context *tls_ctx = tls_get_ctx(sk);
+
+ tls_offload_ctx_rx(tls_ctx)->resync_type = type;
+}
+
+/* Driver's seq tracking has to be disabled until resync succeeded */
+static inline bool tls_offload_tx_resync_pending(struct sock *sk)
+{
+ struct tls_context *tls_ctx = tls_get_ctx(sk);
+ bool ret;
+
+ ret = test_bit(TLS_TX_SYNC_SCHED, &tls_ctx->flags);
+ smp_mb__after_atomic();
+ return ret;
+}
+
+int __net_init tls_proc_init(struct net *net);
+void __net_exit tls_proc_fini(struct net *net);
int tls_proccess_cmsg(struct sock *sk, struct msghdr *msg,
unsigned char *record_type);
-void tls_register_device(struct tls_device *device);
-void tls_unregister_device(struct tls_device *device);
-int tls_device_decrypted(struct sock *sk, struct sk_buff *skb);
int decrypt_skb(struct sock *sk, struct sk_buff *skb,
struct scatterlist *sgout);
-
-struct sk_buff *tls_validate_xmit_skb(struct sock *sk,
- struct net_device *dev,
- struct sk_buff *skb);
+struct sk_buff *tls_encrypt_skb(struct sk_buff *skb);
int tls_sw_fallback_init(struct sock *sk,
struct tls_offload_context_tx *offload_ctx,
struct tls_crypto_info *crypto_info);
+#ifdef CONFIG_TLS_DEVICE
+int tls_device_init(void);
+void tls_device_cleanup(void);
+void tls_device_sk_destruct(struct sock *sk);
+int tls_set_device_offload(struct sock *sk, struct tls_context *ctx);
+void tls_device_free_resources_tx(struct sock *sk);
int tls_set_device_offload_rx(struct sock *sk, struct tls_context *ctx);
-
void tls_device_offload_cleanup_rx(struct sock *sk);
-void handle_device_resync(struct sock *sk, u32 seq, u64 rcd_sn);
+void tls_device_rx_resync_new_rec(struct sock *sk, u32 rcd_len, u32 seq);
+void tls_offload_tx_resync_request(struct sock *sk, u32 got_seq, u32 exp_seq);
+int tls_device_decrypted(struct sock *sk, struct tls_context *tls_ctx,
+ struct sk_buff *skb, struct strp_msg *rxm);
+static inline bool tls_is_sk_rx_device_offloaded(struct sock *sk)
+{
+ if (!sk_fullsock(sk) ||
+ smp_load_acquire(&sk->sk_destruct) != tls_device_sk_destruct)
+ return false;
+ return tls_get_ctx(sk)->rx_conf == TLS_HW;
+}
+#else
+static inline int tls_device_init(void) { return 0; }
+static inline void tls_device_cleanup(void) {}
+
+static inline int
+tls_set_device_offload(struct sock *sk, struct tls_context *ctx)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline void tls_device_free_resources_tx(struct sock *sk) {}
+
+static inline int
+tls_set_device_offload_rx(struct sock *sk, struct tls_context *ctx)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline void tls_device_offload_cleanup_rx(struct sock *sk) {}
+static inline void
+tls_device_rx_resync_new_rec(struct sock *sk, u32 rcd_len, u32 seq) {}
+
+static inline int
+tls_device_decrypted(struct sock *sk, struct tls_context *tls_ctx,
+ struct sk_buff *skb, struct strp_msg *rxm)
+{
+ return 0;
+}
+#endif
#endif /* _TLS_OFFLOAD_H */
--
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