1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Atlantic Network Driver
3  * Copyright (C) 2020 Marvell International Ltd.
4  */
5 
6 #ifndef AQ_MACSEC_H
7 #define AQ_MACSEC_H
8 
9 #include <linux/netdevice.h>
10 #if IS_ENABLED(CONFIG_MACSEC)
11 
12 #include "net/macsec.h"
13 
14 struct aq_nic_s;
15 
16 #define AQ_MACSEC_MAX_SC 32
17 #define AQ_MACSEC_MAX_SA 32
18 
19 enum aq_macsec_sc_sa {
20 	aq_macsec_sa_sc_4sa_8sc,
21 	aq_macsec_sa_sc_not_used,
22 	aq_macsec_sa_sc_2sa_16sc,
23 	aq_macsec_sa_sc_1sa_32sc,
24 };
25 
26 struct aq_macsec_common_stats {
27 	/* Ingress Common Counters */
28 	struct {
29 		u64 ctl_pkts;
30 		u64 tagged_miss_pkts;
31 		u64 untagged_miss_pkts;
32 		u64 notag_pkts;
33 		u64 untagged_pkts;
34 		u64 bad_tag_pkts;
35 		u64 no_sci_pkts;
36 		u64 unknown_sci_pkts;
37 		u64 ctrl_prt_pass_pkts;
38 		u64 unctrl_prt_pass_pkts;
39 		u64 ctrl_prt_fail_pkts;
40 		u64 unctrl_prt_fail_pkts;
41 		u64 too_long_pkts;
42 		u64 igpoc_ctl_pkts;
43 		u64 ecc_error_pkts;
44 		u64 unctrl_hit_drop_redir;
45 	} in;
46 
47 	/* Egress Common Counters */
48 	struct {
49 		u64 ctl_pkts;
50 		u64 unknown_sa_pkts;
51 		u64 untagged_pkts;
52 		u64 too_long;
53 		u64 ecc_error_pkts;
54 		u64 unctrl_hit_drop_redir;
55 	} out;
56 };
57 
58 /* Ingress SA Counters */
59 struct aq_macsec_rx_sa_stats {
60 	u64 untagged_hit_pkts;
61 	u64 ctrl_hit_drop_redir_pkts;
62 	u64 not_using_sa;
63 	u64 unused_sa;
64 	u64 not_valid_pkts;
65 	u64 invalid_pkts;
66 	u64 ok_pkts;
67 	u64 late_pkts;
68 	u64 delayed_pkts;
69 	u64 unchecked_pkts;
70 	u64 validated_octets;
71 	u64 decrypted_octets;
72 };
73 
74 /* Egress SA Counters */
75 struct aq_macsec_tx_sa_stats {
76 	u64 sa_hit_drop_redirect;
77 	u64 sa_protected2_pkts;
78 	u64 sa_protected_pkts;
79 	u64 sa_encrypted_pkts;
80 };
81 
82 /* Egress SC Counters */
83 struct aq_macsec_tx_sc_stats {
84 	u64 sc_protected_pkts;
85 	u64 sc_encrypted_pkts;
86 	u64 sc_protected_octets;
87 	u64 sc_encrypted_octets;
88 };
89 
90 struct aq_macsec_txsc {
91 	u32 hw_sc_idx;
92 	unsigned long tx_sa_idx_busy;
93 	const struct macsec_secy *sw_secy;
94 	u8 tx_sa_key[MACSEC_NUM_AN][MACSEC_MAX_KEY_LEN];
95 	struct aq_macsec_tx_sc_stats stats;
96 	struct aq_macsec_tx_sa_stats tx_sa_stats[MACSEC_NUM_AN];
97 };
98 
99 struct aq_macsec_rxsc {
100 	u32 hw_sc_idx;
101 	unsigned long rx_sa_idx_busy;
102 	const struct macsec_secy *sw_secy;
103 	const struct macsec_rx_sc *sw_rxsc;
104 	u8 rx_sa_key[MACSEC_NUM_AN][MACSEC_MAX_KEY_LEN];
105 	struct aq_macsec_rx_sa_stats rx_sa_stats[MACSEC_NUM_AN];
106 };
107 
108 struct aq_macsec_cfg {
109 	enum aq_macsec_sc_sa sc_sa;
110 	/* Egress channel configuration */
111 	unsigned long txsc_idx_busy;
112 	struct aq_macsec_txsc aq_txsc[AQ_MACSEC_MAX_SC];
113 	/* Ingress channel configuration */
114 	unsigned long rxsc_idx_busy;
115 	struct aq_macsec_rxsc aq_rxsc[AQ_MACSEC_MAX_SC];
116 	/* Statistics / counters */
117 	struct aq_macsec_common_stats stats;
118 };
119 
120 extern const struct macsec_ops aq_macsec_ops;
121 
122 int aq_macsec_init(struct aq_nic_s *nic);
123 void aq_macsec_free(struct aq_nic_s *nic);
124 int aq_macsec_enable(struct aq_nic_s *nic);
125 void aq_macsec_work(struct aq_nic_s *nic);
126 u64 *aq_macsec_get_stats(struct aq_nic_s *nic, u64 *data);
127 int aq_macsec_rx_sa_cnt(struct aq_nic_s *nic);
128 int aq_macsec_tx_sc_cnt(struct aq_nic_s *nic);
129 int aq_macsec_tx_sa_cnt(struct aq_nic_s *nic);
130 
131 #endif
132 
133 #endif /* AQ_MACSEC_H */
134