diff options
Diffstat (limited to 'drivers/crypto/chelsio/chcr_ktls.h')
| -rw-r--r-- | drivers/crypto/chelsio/chcr_ktls.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/drivers/crypto/chelsio/chcr_ktls.h b/drivers/crypto/chelsio/chcr_ktls.h new file mode 100644 index 000000000000..5a7ae2ca446e --- /dev/null +++ b/drivers/crypto/chelsio/chcr_ktls.h @@ -0,0 +1,98 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Copyright (C) 2020 Chelsio Communications. All rights reserved. */ + +#ifndef __CHCR_KTLS_H__ +#define __CHCR_KTLS_H__ + +#ifdef CONFIG_CHELSIO_TLS_DEVICE +#include <net/tls.h> +#include "cxgb4.h" +#include "t4_msg.h" +#include "t4_tcb.h" +#include "l2t.h" +#include "chcr_common.h" +#include "cxgb4_uld.h" + +#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)) + +enum chcr_ktls_conn_state { + KTLS_CONN_CLOSED, + KTLS_CONN_ACT_OPEN_REQ, + KTLS_CONN_ACT_OPEN_RPL, + KTLS_CONN_SET_TCB_REQ, + KTLS_CONN_SET_TCB_RPL, + KTLS_CONN_TX_READY, +}; + +struct chcr_ktls_info { + struct sock *sk; + spinlock_t lock; /* state machine lock */ + struct ktls_key_ctx key_ctx; + struct adapter *adap; + struct l2t_entry *l2te; + struct net_device *netdev; + 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; + enum chcr_ktls_conn_state connection_state; + u16 prev_win; + u8 tx_chan; + u8 smt_idx; + u8 port_id; + u8 ip_family; + u8 first_qset; +}; + +struct chcr_ktls_ofld_ctx_tx { + struct tls_offload_context_tx base; + struct chcr_ktls_info *chcr_info; +}; + +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 uld_ctx *u_ctx = adap->uld[CXGB4_ULD_CRYPTO].handle; + + if (!u_ctx) + return -1; + return u_ctx->lldi.rxq_ids[0]; +} + +void chcr_enable_ktls(struct adapter *adap); +void chcr_disable_ktls(struct adapter *adap); +int chcr_ktls_cpl_act_open_rpl(struct adapter *adap, unsigned char *input); +int chcr_ktls_cpl_set_tcb_rpl(struct adapter *adap, unsigned char *input); +int chcr_ktls_xmit(struct sk_buff *skb, struct net_device *dev); +#endif /* CONFIG_CHELSIO_TLS_DEVICE */ +#endif /* __CHCR_KTLS_H__ */ |