104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright (C) 2020 Chelsio Communications. All rights reserved. */
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#ifndef __CHCR_KTLS_H__
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#define __CHCR_KTLS_H__
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#ifdef CONFIG_CHELSIO_TLS_DEVICE
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#include <net/tls.h>
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#include "cxgb4.h"
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#include "t4_msg.h"
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#include "t4_tcb.h"
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#include "l2t.h"
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#include "chcr_common.h"
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#include "cxgb4_uld.h"
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#define CHCR_TCB_STATE_CLOSED 0
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#define CHCR_KTLS_KEY_CTX_LEN 16
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#define CHCR_SET_TCB_FIELD_LEN sizeof(struct cpl_set_tcb_field)
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#define CHCR_PLAIN_TX_DATA_LEN (sizeof(struct fw_ulptx_wr) +\
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sizeof(struct ulp_txpkt) +\
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sizeof(struct ulptx_idata) +\
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sizeof(struct cpl_tx_data))
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#define CHCR_KTLS_WR_SIZE (CHCR_PLAIN_TX_DATA_LEN +\
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sizeof(struct cpl_tx_sec_pdu))
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enum chcr_ktls_conn_state {
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KTLS_CONN_CLOSED,
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KTLS_CONN_ACT_OPEN_REQ,
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KTLS_CONN_ACT_OPEN_RPL,
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KTLS_CONN_SET_TCB_REQ,
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KTLS_CONN_SET_TCB_RPL,
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KTLS_CONN_TX_READY,
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};
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struct chcr_ktls_info {
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struct sock *sk;
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spinlock_t lock; /* state machine lock */
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struct ktls_key_ctx key_ctx;
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struct adapter *adap;
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struct l2t_entry *l2te;
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struct net_device *netdev;
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u64 iv;
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u64 record_no;
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int tid;
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int atid;
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int rx_qid;
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u32 iv_size;
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u32 prev_seq;
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u32 prev_ack;
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u32 salt_size;
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u32 key_ctx_len;
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u32 scmd0_seqno_numivs;
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u32 scmd0_ivgen_hdrlen;
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u32 tcp_start_seq_number;
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u32 scmd0_short_seqno_numivs;
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u32 scmd0_short_ivgen_hdrlen;
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enum chcr_ktls_conn_state connection_state;
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u16 prev_win;
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u8 tx_chan;
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u8 smt_idx;
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u8 port_id;
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u8 ip_family;
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u8 first_qset;
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};
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struct chcr_ktls_ofld_ctx_tx {
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struct tls_offload_context_tx base;
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struct chcr_ktls_info *chcr_info;
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};
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static inline struct chcr_ktls_ofld_ctx_tx *
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chcr_get_ktls_tx_context(struct tls_context *tls_ctx)
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{
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BUILD_BUG_ON(sizeof(struct chcr_ktls_ofld_ctx_tx) >
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TLS_OFFLOAD_CONTEXT_SIZE_TX);
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return container_of(tls_offload_ctx_tx(tls_ctx),
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struct chcr_ktls_ofld_ctx_tx,
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base);
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}
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static inline int chcr_get_first_rx_qid(struct adapter *adap)
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{
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/* u_ctx is saved in adap, fetch it */
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struct uld_ctx *u_ctx = adap->uld[CXGB4_ULD_CRYPTO].handle;
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if (!u_ctx)
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return -1;
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return u_ctx->lldi.rxq_ids[0];
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}
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int chcr_ktls_cpl_act_open_rpl(struct adapter *adap, unsigned char *input);
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int chcr_ktls_cpl_set_tcb_rpl(struct adapter *adap, unsigned char *input);
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int chcr_ktls_xmit(struct sk_buff *skb, struct net_device *dev);
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int chcr_ktls_dev_add(struct net_device *netdev, struct sock *sk,
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enum tls_offload_ctx_dir direction,
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struct tls_crypto_info *crypto_info,
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u32 start_offload_tcp_sn);
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void chcr_ktls_dev_del(struct net_device *netdev,
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struct tls_context *tls_ctx,
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enum tls_offload_ctx_dir direction);
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#endif /* CONFIG_CHELSIO_TLS_DEVICE */
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#endif /* __CHCR_KTLS_H__ */
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