diff options
Diffstat (limited to 'include/net/tls.h')
| -rw-r--r-- | include/net/tls.h | 127 |
1 files changed, 104 insertions, 23 deletions
diff --git a/include/net/tls.h b/include/net/tls.h index f5fb16da3860..70c273777fe9 100644 --- a/include/net/tls.h +++ b/include/net/tls.h @@ -83,24 +83,10 @@ struct tls_device { void (*unhash)(struct tls_device *device, struct sock *sk); }; -struct tls_sw_context { +struct tls_sw_context_tx { struct crypto_aead *aead_send; - struct crypto_aead *aead_recv; struct crypto_wait async_wait; - /* Receive context */ - struct strparser strp; - 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; - - char rx_aad_ciphertext[TLS_AAD_SPACE_SIZE]; - char rx_aad_plaintext[TLS_AAD_SPACE_SIZE]; - - /* Sending context */ char aad_space[TLS_AAD_SPACE_SIZE]; unsigned int sg_plaintext_size; @@ -117,6 +103,54 @@ struct tls_sw_context { struct scatterlist sg_aead_out[2]; }; +struct tls_sw_context_rx { + struct crypto_aead *aead_recv; + struct crypto_wait async_wait; + + struct strparser strp; + 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; + + char rx_aad_ciphertext[TLS_AAD_SPACE_SIZE]; + char rx_aad_plaintext[TLS_AAD_SPACE_SIZE]; + +}; + +struct tls_record_info { + struct list_head list; + u32 end_seq; + int len; + int num_frags; + skb_frag_t frags[MAX_SKB_FRAGS]; +}; + +struct tls_offload_context { + struct crypto_aead *aead_send; + spinlock_t lock; /* protects records list */ + struct list_head records_list; + struct tls_record_info *open_record; + struct tls_record_info *retransmit_hint; + u64 hint_record_sn; + u64 unacked_record_sn; + + struct scatterlist sg_tx_data[MAX_SKB_FRAGS]; + void (*sk_destruct)(struct sock *sk); + u8 driver_state[]; + /* 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_OFFLOAD_CONTEXT_SIZE \ + (ALIGN(sizeof(struct tls_offload_context), sizeof(void *)) + \ + TLS_DRIVER_STATE_SIZE) + enum { TLS_PENDING_CLOSED_RECORD }; @@ -141,9 +175,15 @@ struct tls_context { struct tls12_crypto_info_aes_gcm_128 crypto_recv_aes_gcm_128; }; - void *priv_ctx; + struct list_head list; + struct net_device *netdev; + refcount_t refcount; + + void *priv_ctx_tx; + void *priv_ctx_rx; - u8 conf:3; + u8 tx_conf:3; + u8 rx_conf:3; struct cipher_context tx; struct cipher_context rx; @@ -181,7 +221,8 @@ int tls_sw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size); 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(struct sock *sk); +void tls_sw_free_resources_tx(struct sock *sk); +void tls_sw_free_resources_rx(struct sock *sk); 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, @@ -190,9 +231,28 @@ ssize_t tls_sw_splice_read(struct socket *sock, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags); -void tls_sk_destruct(struct sock *sk, struct tls_context *ctx); -void tls_icsk_clean_acked(struct sock *sk); +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); + +struct tls_record_info *tls_get_record(struct tls_offload_context *context, + u32 seq, u64 *p_record_sn); + +static inline bool tls_record_is_start_marker(struct tls_record_info *rec) +{ + return rec->len == 0; +} +static inline u32 tls_record_start_seq(struct tls_record_info *rec) +{ + 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); @@ -229,6 +289,13 @@ static inline bool tls_is_pending_open_record(struct tls_context *tls_ctx) return tls_ctx->pending_open_record_frags; } +static inline bool tls_is_sk_tx_device_offloaded(struct sock *sk) +{ + return sk_fullsock(sk) && + /* matches smp_store_release in tls_set_device_offload */ + smp_load_acquire(&sk->sk_destruct) == &tls_device_sk_destruct; +} + static inline void tls_err_abort(struct sock *sk, int err) { sk->sk_err = err; @@ -301,16 +368,22 @@ static inline struct tls_context *tls_get_ctx(const struct sock *sk) return icsk->icsk_ulp_data; } -static inline struct tls_sw_context *tls_sw_ctx( +static inline struct tls_sw_context_rx *tls_sw_ctx_rx( const struct tls_context *tls_ctx) { - return (struct tls_sw_context *)tls_ctx->priv_ctx; + return (struct tls_sw_context_rx *)tls_ctx->priv_ctx_rx; +} + +static inline struct tls_sw_context_tx *tls_sw_ctx_tx( + const struct tls_context *tls_ctx) +{ + return (struct tls_sw_context_tx *)tls_ctx->priv_ctx_tx; } static inline struct tls_offload_context *tls_offload_ctx( const struct tls_context *tls_ctx) { - return (struct tls_offload_context *)tls_ctx->priv_ctx; + return (struct tls_offload_context *)tls_ctx->priv_ctx_tx; } int tls_proccess_cmsg(struct sock *sk, struct msghdr *msg, @@ -318,4 +391,12 @@ int tls_proccess_cmsg(struct sock *sk, struct msghdr *msg, void tls_register_device(struct tls_device *device); void tls_unregister_device(struct tls_device *device); +struct sk_buff *tls_validate_xmit_skb(struct sock *sk, + struct net_device *dev, + struct sk_buff *skb); + +int tls_sw_fallback_init(struct sock *sk, + struct tls_offload_context *offload_ctx, + struct tls_crypto_info *crypto_info); + #endif /* _TLS_OFFLOAD_H */ |