1/* SPDX-License-Identifier: GPL-2.0-only */
  2/* Copyright (C) 2020 Chelsio Communications.  All rights reserved. */
  3
  4#ifndef __CHCR_KTLS_H__
  5#define __CHCR_KTLS_H__
  6
  7#include "cxgb4.h"
  8#include "t4_msg.h"
  9#include "t4_tcb.h"
 10#include "l2t.h"
 11#include "chcr_common.h"
 12#include "cxgb4_uld.h"
 13#include "clip_tbl.h"
 14
 15#define CHCR_KTLS_DRV_MODULE_NAME "ch_ktls"
 16#define CHCR_KTLS_DRV_VERSION "1.0.0.0-ko"
 17#define CHCR_KTLS_DRV_DESC "Chelsio NIC TLS ULD Driver"
 18
 19#define CHCR_TCB_STATE_CLOSED	0
 20#define CHCR_KTLS_KEY_CTX_LEN	16
 21#define CHCR_SET_TCB_FIELD_LEN	sizeof(struct cpl_set_tcb_field)
 22#define CHCR_PLAIN_TX_DATA_LEN	(sizeof(struct fw_ulptx_wr) +\
 23				 sizeof(struct ulp_txpkt) +\
 24				 sizeof(struct ulptx_idata) +\
 25				 sizeof(struct cpl_tx_data))
 26
 27#define CHCR_KTLS_WR_SIZE	(CHCR_PLAIN_TX_DATA_LEN +\
 28				 sizeof(struct cpl_tx_sec_pdu))
 29#define FALLBACK		35
 30
 31enum ch_ktls_open_state {
 32	CH_KTLS_OPEN_SUCCESS = 0,
 33	CH_KTLS_OPEN_PENDING = 1,
 34	CH_KTLS_OPEN_FAILURE = 2,
 35};
 36
 37struct chcr_ktls_info {
 38	struct sock *sk;
 39	spinlock_t lock; /* lock for pending_close */
 40	struct ktls_key_ctx key_ctx;
 41	struct adapter *adap;
 42	struct l2t_entry *l2te;
 43	struct net_device *netdev;
 44	struct completion completion;
 45	u64 iv;
 46	u64 record_no;
 47	int tid;
 48	int atid;
 49	int rx_qid;
 50	u32 iv_size;
 51	u32 prev_seq;
 52	u32 prev_ack;
 53	u32 salt_size;
 54	u32 key_ctx_len;
 55	u32 scmd0_seqno_numivs;
 56	u32 scmd0_ivgen_hdrlen;
 57	u32 tcp_start_seq_number;
 58	u32 scmd0_short_seqno_numivs;
 59	u32 scmd0_short_ivgen_hdrlen;
 60	u16 prev_win;
 61	u8 tx_chan;
 62	u8 smt_idx;
 63	u8 port_id;
 64	u8 ip_family;
 65	u8 first_qset;
 66	enum ch_ktls_open_state open_state;
 67	bool pending_close;
 68};
 69
 70struct chcr_ktls_ctx_tx {
 71	struct chcr_ktls_info *chcr_info;
 72};
 73
 74struct chcr_ktls_uld_ctx {
 75	struct list_head entry;
 76	struct cxgb4_lld_info lldi;
 77	struct xarray tid_list;
 78	bool detach;
 79};
 80
 81static inline struct chcr_ktls_info *
 82__chcr_get_ktls_tx_info(struct tls_offload_context_tx *octx)
 83{
 84	struct chcr_ktls_ctx_tx *priv_ctx;
 85
 86	BUILD_BUG_ON(sizeof(struct chcr_ktls_ctx_tx) > TLS_DRIVER_STATE_SIZE_TX);
 87	priv_ctx = (struct chcr_ktls_ctx_tx *)octx->driver_state;
 88	return priv_ctx->chcr_info;
 89}
 90
 91static inline struct chcr_ktls_info *
 92chcr_get_ktls_tx_info(struct tls_context *tls_ctx)
 93{
 94	struct chcr_ktls_ctx_tx *priv_ctx;
 95
 96	BUILD_BUG_ON(sizeof(struct chcr_ktls_ctx_tx) > TLS_DRIVER_STATE_SIZE_TX);
 97	priv_ctx = (struct chcr_ktls_ctx_tx *)__tls_driver_ctx(tls_ctx, TLS_OFFLOAD_CTX_DIR_TX);
 98	return priv_ctx->chcr_info;
 99}
100
101static inline void
102chcr_set_ktls_tx_info(struct tls_context *tls_ctx, struct chcr_ktls_info *chcr_info)
103{
104	struct chcr_ktls_ctx_tx *priv_ctx;
105
106	priv_ctx = __tls_driver_ctx(tls_ctx, TLS_OFFLOAD_CTX_DIR_TX);
107	priv_ctx->chcr_info = chcr_info;
108}
109
110static inline int chcr_get_first_rx_qid(struct adapter *adap)
111{
112	/* u_ctx is saved in adap, fetch it */
113	struct chcr_ktls_uld_ctx *u_ctx = adap->uld[CXGB4_ULD_KTLS].handle;
114
115	if (!u_ctx)
116		return -1;
117	return u_ctx->lldi.rxq_ids[0];
118}
119
120typedef int (*chcr_handler_func)(struct adapter *adap, unsigned char *input);
121#endif /* __CHCR_KTLS_H__ */