1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*******************************************************************************
3  *
4  * Intel 10 Gigabit PCI Express Linux drive
5  * Copyright(c) 2016 Intel Corporation.
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms and conditions of the GNU General Public License,
9  * version 2, as published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
14  * more details.
15  *
16  * You should have received a copy of the GNU General Public License along
17  * with this program.  If not, see <http://www.gnu.org/licenses/>.
18  *
19  * The full GNU General Public License is included in this distribution in
20  * the file called "COPYING".
21  *
22  * Contact Information:
23  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25  *
26  ******************************************************************************/
27 
28 #ifndef _IXGBE_MODEL_H_
29 #define _IXGBE_MODEL_H_
30 
31 #include "ixgbe.h"
32 #include "ixgbe_type.h"
33 
34 struct ixgbe_mat_field {
35 	unsigned int off;
36 	int (*val)(struct ixgbe_fdir_filter *input,
37 		   union ixgbe_atr_input *mask,
38 		   u32 val, u32 m);
39 	unsigned int type;
40 };
41 
42 struct ixgbe_jump_table {
43 	struct ixgbe_mat_field *mat;
44 	struct ixgbe_fdir_filter *input;
45 	union ixgbe_atr_input *mask;
46 	u32 link_hdl;
47 	unsigned long child_loc_map[32];
48 };
49 
50 #define IXGBE_MAX_HW_ENTRIES 2045
51 
52 static inline int ixgbe_mat_prgm_sip(struct ixgbe_fdir_filter *input,
53 				     union ixgbe_atr_input *mask,
54 				     u32 val, u32 m)
55 {
56 	input->filter.formatted.src_ip[0] = val;
57 	mask->formatted.src_ip[0] = m;
58 	return 0;
59 }
60 
61 static inline int ixgbe_mat_prgm_dip(struct ixgbe_fdir_filter *input,
62 				     union ixgbe_atr_input *mask,
63 				     u32 val, u32 m)
64 {
65 	input->filter.formatted.dst_ip[0] = val;
66 	mask->formatted.dst_ip[0] = m;
67 	return 0;
68 }
69 
70 static struct ixgbe_mat_field ixgbe_ipv4_fields[] = {
71 	{ .off = 12, .val = ixgbe_mat_prgm_sip,
72 	  .type = IXGBE_ATR_FLOW_TYPE_IPV4},
73 	{ .off = 16, .val = ixgbe_mat_prgm_dip,
74 	  .type = IXGBE_ATR_FLOW_TYPE_IPV4},
75 	{ .val = NULL } /* terminal node */
76 };
77 
78 static inline int ixgbe_mat_prgm_ports(struct ixgbe_fdir_filter *input,
79 				       union ixgbe_atr_input *mask,
80 				       u32 val, u32 m)
81 {
82 	input->filter.formatted.src_port = val & 0xffff;
83 	mask->formatted.src_port = m & 0xffff;
84 	input->filter.formatted.dst_port = val >> 16;
85 	mask->formatted.dst_port = m >> 16;
86 
87 	return 0;
88 };
89 
90 static struct ixgbe_mat_field ixgbe_tcp_fields[] = {
91 	{.off = 0, .val = ixgbe_mat_prgm_ports,
92 	 .type = IXGBE_ATR_FLOW_TYPE_TCPV4},
93 	{ .val = NULL } /* terminal node */
94 };
95 
96 static struct ixgbe_mat_field ixgbe_udp_fields[] = {
97 	{.off = 0, .val = ixgbe_mat_prgm_ports,
98 	 .type = IXGBE_ATR_FLOW_TYPE_UDPV4},
99 	{ .val = NULL } /* terminal node */
100 };
101 
102 struct ixgbe_nexthdr {
103 	/* offset, shift, and mask of position to next header */
104 	unsigned int o;
105 	u32 s;
106 	u32 m;
107 	/* match criteria to make this jump*/
108 	unsigned int off;
109 	u32 val;
110 	u32 mask;
111 	/* location of jump to make */
112 	struct ixgbe_mat_field *jump;
113 };
114 
115 static struct ixgbe_nexthdr ixgbe_ipv4_jumps[] = {
116 	{ .o = 0, .s = 6, .m = 0xf,
117 	  .off = 8, .val = 0x600, .mask = 0xff00, .jump = ixgbe_tcp_fields},
118 	{ .o = 0, .s = 6, .m = 0xf,
119 	  .off = 8, .val = 0x1100, .mask = 0xff00, .jump = ixgbe_udp_fields},
120 	{ .jump = NULL } /* terminal node */
121 };
122 #endif /* _IXGBE_MODEL_H_ */
123