diff options
Diffstat (limited to 'drivers/crypto/chelsio/chtls/chtls_cm.h')
| -rw-r--r-- | drivers/crypto/chelsio/chtls/chtls_cm.h | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/drivers/crypto/chelsio/chtls/chtls_cm.h b/drivers/crypto/chelsio/chtls/chtls_cm.h new file mode 100644 index 000000000..ef7261072 --- /dev/null +++ b/drivers/crypto/chelsio/chtls/chtls_cm.h @@ -0,0 +1,221 @@ +/* + * Copyright (c) 2018 Chelsio Communications, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __CHTLS_CM_H__ +#define __CHTLS_CM_H__ + +/* + * TCB settings + */ +/* 3:0 */ +#define TCB_ULP_TYPE_W 0 +#define TCB_ULP_TYPE_S 0 +#define TCB_ULP_TYPE_M 0xfULL +#define TCB_ULP_TYPE_V(x) ((x) << TCB_ULP_TYPE_S) + +/* 11:4 */ +#define TCB_ULP_RAW_W 0 +#define TCB_ULP_RAW_S 4 +#define TCB_ULP_RAW_M 0xffULL +#define TCB_ULP_RAW_V(x) ((x) << TCB_ULP_RAW_S) + +#define TF_TLS_KEY_SIZE_S 7 +#define TF_TLS_KEY_SIZE_V(x) ((x) << TF_TLS_KEY_SIZE_S) + +#define TF_TLS_CONTROL_S 2 +#define TF_TLS_CONTROL_V(x) ((x) << TF_TLS_CONTROL_S) + +#define TF_TLS_ACTIVE_S 1 +#define TF_TLS_ACTIVE_V(x) ((x) << TF_TLS_ACTIVE_S) + +#define TF_TLS_ENABLE_S 0 +#define TF_TLS_ENABLE_V(x) ((x) << TF_TLS_ENABLE_S) + +#define TF_RX_QUIESCE_S 15 +#define TF_RX_QUIESCE_V(x) ((x) << TF_RX_QUIESCE_S) + +/* + * Max receive window supported by HW in bytes. Only a small part of it can + * be set through option0, the rest needs to be set through RX_DATA_ACK. + */ +#define MAX_RCV_WND ((1U << 27) - 1) +#define MAX_MSS 65536 + +/* + * Min receive window. We want it to be large enough to accommodate receive + * coalescing, handle jumbo frames, and not trigger sender SWS avoidance. + */ +#define MIN_RCV_WND (24 * 1024U) +#define LOOPBACK(x) (((x) & htonl(0xff000000)) == htonl(0x7f000000)) + +/* for TX: a skb must have a headroom of at least TX_HEADER_LEN bytes */ +#define TX_HEADER_LEN \ + (sizeof(struct fw_ofld_tx_data_wr) + sizeof(struct sge_opaque_hdr)) +#define TX_TLSHDR_LEN \ + (sizeof(struct fw_tlstx_data_wr) + sizeof(struct cpl_tx_tls_sfo) + \ + sizeof(struct sge_opaque_hdr)) +#define TXDATA_SKB_LEN 128 + +enum { + CPL_TX_TLS_SFO_TYPE_CCS, + CPL_TX_TLS_SFO_TYPE_ALERT, + CPL_TX_TLS_SFO_TYPE_HANDSHAKE, + CPL_TX_TLS_SFO_TYPE_DATA, + CPL_TX_TLS_SFO_TYPE_HEARTBEAT, +}; + +enum { + TLS_HDR_TYPE_CCS = 20, + TLS_HDR_TYPE_ALERT, + TLS_HDR_TYPE_HANDSHAKE, + TLS_HDR_TYPE_RECORD, + TLS_HDR_TYPE_HEARTBEAT, +}; + +typedef void (*defer_handler_t)(struct chtls_dev *dev, struct sk_buff *skb); +extern struct request_sock_ops chtls_rsk_ops; + +struct deferred_skb_cb { + defer_handler_t handler; + struct chtls_dev *dev; +}; + +#define DEFERRED_SKB_CB(skb) ((struct deferred_skb_cb *)(skb)->cb) +#define failover_flowc_wr_len offsetof(struct fw_flowc_wr, mnemval[3]) +#define WR_SKB_CB(skb) ((struct wr_skb_cb *)(skb)->cb) +#define ACCEPT_QUEUE(sk) (&inet_csk(sk)->icsk_accept_queue.rskq_accept_head) + +#define SND_WSCALE(tp) ((tp)->rx_opt.snd_wscale) +#define RCV_WSCALE(tp) ((tp)->rx_opt.rcv_wscale) +#define USER_MSS(tp) ((tp)->rx_opt.user_mss) +#define TS_RECENT_STAMP(tp) ((tp)->rx_opt.ts_recent_stamp) +#define WSCALE_OK(tp) ((tp)->rx_opt.wscale_ok) +#define TSTAMP_OK(tp) ((tp)->rx_opt.tstamp_ok) +#define SACK_OK(tp) ((tp)->rx_opt.sack_ok) +#define INC_ORPHAN_COUNT(sk) percpu_counter_inc((sk)->sk_prot->orphan_count) + +/* TLS SKB */ +#define skb_ulp_tls_inline(skb) (ULP_SKB_CB(skb)->ulp.tls.ofld) +#define skb_ulp_tls_iv_imm(skb) (ULP_SKB_CB(skb)->ulp.tls.iv) + +void chtls_defer_reply(struct sk_buff *skb, struct chtls_dev *dev, + defer_handler_t handler); + +/* + * Returns true if the socket is in one of the supplied states. + */ +static inline unsigned int sk_in_state(const struct sock *sk, + unsigned int states) +{ + return states & (1 << sk->sk_state); +} + +static void chtls_rsk_destructor(struct request_sock *req) +{ + /* do nothing */ +} + +static inline void chtls_init_rsk_ops(struct proto *chtls_tcp_prot, + struct request_sock_ops *chtls_tcp_ops, + struct proto *tcp_prot, int family) +{ + memset(chtls_tcp_ops, 0, sizeof(*chtls_tcp_ops)); + chtls_tcp_ops->family = family; + chtls_tcp_ops->obj_size = sizeof(struct tcp_request_sock); + chtls_tcp_ops->destructor = chtls_rsk_destructor; + chtls_tcp_ops->slab = tcp_prot->rsk_prot->slab; + chtls_tcp_prot->rsk_prot = chtls_tcp_ops; +} + +static inline void chtls_reqsk_free(struct request_sock *req) +{ + if (req->rsk_listener) + sock_put(req->rsk_listener); + kmem_cache_free(req->rsk_ops->slab, req); +} + +#define DECLARE_TASK_FUNC(task, task_param) \ + static void task(struct work_struct *task_param) + +static inline void sk_wakeup_sleepers(struct sock *sk, bool interruptable) +{ + struct socket_wq *wq; + + rcu_read_lock(); + wq = rcu_dereference(sk->sk_wq); + if (skwq_has_sleeper(wq)) { + if (interruptable) + wake_up_interruptible(sk_sleep(sk)); + else + wake_up_all(sk_sleep(sk)); + } + rcu_read_unlock(); +} + +static inline void chtls_set_req_port(struct request_sock *oreq, + __be16 source, __be16 dest) +{ + inet_rsk(oreq)->ir_rmt_port = source; + inet_rsk(oreq)->ir_num = ntohs(dest); +} + +static inline void chtls_set_req_addr(struct request_sock *oreq, + __be32 local_ip, __be32 peer_ip) +{ + inet_rsk(oreq)->ir_loc_addr = local_ip; + inet_rsk(oreq)->ir_rmt_addr = peer_ip; +} + +static inline void chtls_free_skb(struct sock *sk, struct sk_buff *skb) +{ + skb_dst_set(skb, NULL); + __skb_unlink(skb, &sk->sk_receive_queue); + __kfree_skb(skb); +} + +static inline void chtls_kfree_skb(struct sock *sk, struct sk_buff *skb) +{ + skb_dst_set(skb, NULL); + __skb_unlink(skb, &sk->sk_receive_queue); + kfree_skb(skb); +} + +static inline void chtls_reset_wr_list(struct chtls_sock *csk) +{ + csk->wr_skb_head = NULL; + csk->wr_skb_tail = NULL; +} + +static inline void enqueue_wr(struct chtls_sock *csk, struct sk_buff *skb) +{ + WR_SKB_CB(skb)->next_wr = NULL; + + skb_get(skb); + + if (!csk->wr_skb_head) + csk->wr_skb_head = skb; + else + WR_SKB_CB(csk->wr_skb_tail)->next_wr = skb; + csk->wr_skb_tail = skb; +} + +static inline struct sk_buff *dequeue_wr(struct sock *sk) +{ + struct chtls_sock *csk = rcu_dereference_sk_user_data(sk); + struct sk_buff *skb = NULL; + + skb = csk->wr_skb_head; + + if (likely(skb)) { + /* Don't bother clearing the tail */ + csk->wr_skb_head = WR_SKB_CB(skb)->next_wr; + WR_SKB_CB(skb)->next_wr = NULL; + } + return skb; +} +#endif |