1/* SPDX-License-Identifier: GPL-2.0 */
2/* Copyright(c) 2017 Oracle and/or its affiliates. All rights reserved. */
3
4#ifndef _IXGBE_IPSEC_H_
5#define _IXGBE_IPSEC_H_
6
7#define IXGBE_IPSEC_MAX_SA_COUNT	1024
8#define IXGBE_IPSEC_MAX_RX_IP_COUNT	128
9#define IXGBE_IPSEC_BASE_RX_INDEX	0
10#define IXGBE_IPSEC_BASE_TX_INDEX	IXGBE_IPSEC_MAX_SA_COUNT
11#define IXGBE_IPSEC_AUTH_BITS		128
12
13#define IXGBE_RXTXIDX_IPS_EN		0x00000001
14#define IXGBE_RXIDX_TBL_SHIFT		1
15enum ixgbe_ipsec_tbl_sel {
16	ips_rx_ip_tbl	=	0x01,
17	ips_rx_spi_tbl	=	0x02,
18	ips_rx_key_tbl	=	0x03,
19};
20
21#define IXGBE_RXTXIDX_IDX_SHIFT		3
22#define IXGBE_RXTXIDX_READ		0x40000000
23#define IXGBE_RXTXIDX_WRITE		0x80000000
24
25#define IXGBE_RXMOD_VALID		0x00000001
26#define IXGBE_RXMOD_PROTO_ESP		0x00000004
27#define IXGBE_RXMOD_DECRYPT		0x00000008
28#define IXGBE_RXMOD_IPV6		0x00000010
29#define IXGBE_RXTXMOD_VF		0x00000020
30
31struct rx_sa {
32	struct hlist_node hlist;
33	struct xfrm_state *xs;
34	__be32 ipaddr[4];
35	u32 key[4];
36	u32 salt;
37	u32 mode;
38	u8  iptbl_ind;
39	bool used;
40	bool decrypt;
41	u32 vf;
42};
43
44struct rx_ip_sa {
45	__be32 ipaddr[4];
46	u32 ref_cnt;
47	bool used;
48};
49
50struct tx_sa {
51	struct xfrm_state *xs;
52	u32 key[4];
53	u32 salt;
54	u32 mode;
55	bool encrypt;
56	bool used;
57	u32 vf;
58};
59
60struct ixgbe_ipsec_tx_data {
61	u32 flags;
62	u16 trailer_len;
63	u16 sa_idx;
64};
65
66struct ixgbe_ipsec {
67	u16 num_rx_sa;
68	u16 num_tx_sa;
69	struct rx_ip_sa *ip_tbl;
70	struct rx_sa *rx_tbl;
71	struct tx_sa *tx_tbl;
72	DECLARE_HASHTABLE(rx_sa_list, 10);
73};
74
75struct sa_mbx_msg {
76	__be32 spi;
77	u8 dir;
78	u8 proto;
79	u16 family;
80	__be32 addr[4];
81	u32 key[5];
82};
83#endif /* _IXGBE_IPSEC_H_ */
84