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