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/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright (C) 2020 Chelsio Communications. All rights reserved. */
#ifndef __CHCR_KTLS_H__
#define __CHCR_KTLS_H__
#include "cxgb4.h"
#include "t4_msg.h"
#include "t4_tcb.h"
#include "l2t.h"
#include "chcr_common.h"
#include "cxgb4_uld.h"
#include "clip_tbl.h"
#define CHCR_KTLS_DRV_MODULE_NAME "ch_ktls"
#define CHCR_KTLS_DRV_VERSION "1.0.0.0-ko"
#define CHCR_KTLS_DRV_DESC "Chelsio NIC TLS ULD Driver"
#define CHCR_TCB_STATE_CLOSED 0
#define CHCR_KTLS_KEY_CTX_LEN 16
#define CHCR_SET_TCB_FIELD_LEN sizeof(struct cpl_set_tcb_field)
#define CHCR_PLAIN_TX_DATA_LEN (sizeof(struct fw_ulptx_wr) +\
sizeof(struct ulp_txpkt) +\
sizeof(struct ulptx_idata) +\
sizeof(struct cpl_tx_data))
#define CHCR_KTLS_WR_SIZE (CHCR_PLAIN_TX_DATA_LEN +\
sizeof(struct cpl_tx_sec_pdu))
#define FALLBACK 35
enum ch_ktls_open_state {
CH_KTLS_OPEN_SUCCESS = 0,
CH_KTLS_OPEN_PENDING = 1,
CH_KTLS_OPEN_FAILURE = 2,
};
struct chcr_ktls_info {
struct sock *sk;
spinlock_t lock; /* lock for pending_close */
struct ktls_key_ctx key_ctx;
struct adapter *adap;
struct l2t_entry *l2te;
struct net_device *netdev;
struct completion completion;
u64 iv;
u64 record_no;
int tid;
int atid;
int rx_qid;
u32 iv_size;
u32 prev_seq;
u32 prev_ack;
u32 salt_size;
u32 key_ctx_len;
u32 scmd0_seqno_numivs;
u32 scmd0_ivgen_hdrlen;
u32 tcp_start_seq_number;
u32 scmd0_short_seqno_numivs;
u32 scmd0_short_ivgen_hdrlen;
u16 prev_win;
u8 tx_chan;
u8 smt_idx;
u8 port_id;
u8 ip_family;
u8 first_qset;
enum ch_ktls_open_state open_state;
bool pending_close;
};
struct chcr_ktls_ofld_ctx_tx {
struct tls_offload_context_tx base;
struct chcr_ktls_info *chcr_info;
};
struct chcr_ktls_uld_ctx {
struct list_head entry;
struct cxgb4_lld_info lldi;
struct xarray tid_list;
bool detach;
};
static inline struct chcr_ktls_ofld_ctx_tx *
chcr_get_ktls_tx_context(struct tls_context *tls_ctx)
{
BUILD_BUG_ON(sizeof(struct chcr_ktls_ofld_ctx_tx) >
TLS_OFFLOAD_CONTEXT_SIZE_TX);
return container_of(tls_offload_ctx_tx(tls_ctx),
struct chcr_ktls_ofld_ctx_tx,
base);
}
static inline int chcr_get_first_rx_qid(struct adapter *adap)
{
/* u_ctx is saved in adap, fetch it */
struct chcr_ktls_uld_ctx *u_ctx = adap->uld[CXGB4_ULD_KTLS].handle;
if (!u_ctx)
return -1;
return u_ctx->lldi.rxq_ids[0];
}
typedef int (*chcr_handler_func)(struct adapter *adap, unsigned char *input);
#endif /* __CHCR_KTLS_H__ */
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