1  /* SPDX-License-Identifier: GPL-2.0 */
2  /* Copyright (c) 2021, Intel Corporation. */
3  
4  #ifndef _IAVF_FDIR_H_
5  #define _IAVF_FDIR_H_
6  
7  struct iavf_adapter;
8  
9  /* State of Flow Director filter */
10  enum iavf_fdir_fltr_state_t {
11  	IAVF_FDIR_FLTR_ADD_REQUEST,	/* User requests to add filter */
12  	IAVF_FDIR_FLTR_ADD_PENDING,	/* Filter pending add by the PF */
13  	IAVF_FDIR_FLTR_DEL_REQUEST,	/* User requests to delete filter */
14  	IAVF_FDIR_FLTR_DEL_PENDING,	/* Filter pending delete by the PF */
15  	IAVF_FDIR_FLTR_ACTIVE,		/* Filter is active */
16  };
17  
18  enum iavf_fdir_flow_type {
19  	/* NONE - used for undef/error */
20  	IAVF_FDIR_FLOW_NONE = 0,
21  	IAVF_FDIR_FLOW_IPV4_TCP,
22  	IAVF_FDIR_FLOW_IPV4_UDP,
23  	IAVF_FDIR_FLOW_IPV4_SCTP,
24  	IAVF_FDIR_FLOW_IPV4_AH,
25  	IAVF_FDIR_FLOW_IPV4_ESP,
26  	IAVF_FDIR_FLOW_IPV4_OTHER,
27  	IAVF_FDIR_FLOW_IPV6_TCP,
28  	IAVF_FDIR_FLOW_IPV6_UDP,
29  	IAVF_FDIR_FLOW_IPV6_SCTP,
30  	IAVF_FDIR_FLOW_IPV6_AH,
31  	IAVF_FDIR_FLOW_IPV6_ESP,
32  	IAVF_FDIR_FLOW_IPV6_OTHER,
33  	IAVF_FDIR_FLOW_NON_IP_L2,
34  	/* MAX - this must be last and add anything new just above it */
35  	IAVF_FDIR_FLOW_PTYPE_MAX,
36  };
37  
38  /* Must not exceed the array element number of '__be32 data[2]' in the ethtool
39   * 'struct ethtool_rx_flow_spec.m_ext.data[2]' to express the flex-byte (word).
40   */
41  #define IAVF_FLEX_WORD_NUM	2
42  
43  struct iavf_flex_word {
44  	u16 offset;
45  	u16 word;
46  };
47  
48  struct iavf_ipv4_addrs {
49  	__be32 src_ip;
50  	__be32 dst_ip;
51  };
52  
53  struct iavf_ipv6_addrs {
54  	struct in6_addr src_ip;
55  	struct in6_addr dst_ip;
56  };
57  
58  struct iavf_fdir_eth {
59  	__be16 etype;
60  };
61  
62  struct iavf_fdir_ip {
63  	union {
64  		struct iavf_ipv4_addrs v4_addrs;
65  		struct iavf_ipv6_addrs v6_addrs;
66  	};
67  	__be16 src_port;
68  	__be16 dst_port;
69  	__be32 l4_header;	/* first 4 bytes of the layer 4 header */
70  	__be32 spi;		/* security parameter index for AH/ESP */
71  	union {
72  		u8 tos;
73  		u8 tclass;
74  	};
75  	u8 proto;
76  };
77  
78  struct iavf_fdir_extra {
79  	u32 usr_def[IAVF_FLEX_WORD_NUM];
80  };
81  
82  /* bookkeeping of Flow Director filters */
83  struct iavf_fdir_fltr {
84  	enum iavf_fdir_fltr_state_t state;
85  	struct list_head list;
86  
87  	enum iavf_fdir_flow_type flow_type;
88  
89  	struct iavf_fdir_eth eth_data;
90  	struct iavf_fdir_eth eth_mask;
91  
92  	struct iavf_fdir_ip ip_data;
93  	struct iavf_fdir_ip ip_mask;
94  
95  	struct iavf_fdir_extra ext_data;
96  	struct iavf_fdir_extra ext_mask;
97  
98  	enum virtchnl_action action;
99  
100  	/* flex byte filter data */
101  	u8 ip_ver; /* used to adjust the flex offset, 4 : IPv4, 6 : IPv6 */
102  	u8 flex_cnt;
103  	struct iavf_flex_word flex_words[IAVF_FLEX_WORD_NUM];
104  
105  	u32 flow_id;
106  
107  	u32 loc;	/* Rule location inside the flow table */
108  	u32 q_index;
109  
110  	struct virtchnl_fdir_add vc_add_msg;
111  };
112  
113  int iavf_fill_fdir_add_msg(struct iavf_adapter *adapter, struct iavf_fdir_fltr *fltr);
114  void iavf_print_fdir_fltr(struct iavf_adapter *adapter, struct iavf_fdir_fltr *fltr);
115  bool iavf_fdir_is_dup_fltr(struct iavf_adapter *adapter, struct iavf_fdir_fltr *fltr);
116  void iavf_fdir_list_add_fltr(struct iavf_adapter *adapter, struct iavf_fdir_fltr *fltr);
117  struct iavf_fdir_fltr *iavf_find_fdir_fltr_by_loc(struct iavf_adapter *adapter, u32 loc);
118  #endif /* _IAVF_FDIR_H_ */
119