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1 | /* SPDX-License-Identifier: BSD-3-Clause |
2 | * Copyright 2017 Mellanox Technologies, Ltd | |
3 | */ | |
4 | ||
9f95a23c TL |
5 | #define MAX_PATTERN_NUM 3 |
6 | #define MAX_ACTION_NUM 2 | |
11fdf7f2 TL |
7 | |
8 | struct rte_flow * | |
9 | generate_ipv4_flow(uint16_t port_id, uint16_t rx_q, | |
10 | uint32_t src_ip, uint32_t src_mask, | |
11 | uint32_t dest_ip, uint32_t dest_mask, | |
12 | struct rte_flow_error *error); | |
13 | ||
14 | ||
15 | /** | |
16 | * create a flow rule that sends packets with matching src and dest ip | |
17 | * to selected queue. | |
18 | * | |
19 | * @param port_id | |
20 | * The selected port. | |
21 | * @param rx_q | |
22 | * The selected target queue. | |
23 | * @param src_ip | |
24 | * The src ip value to match the input packet. | |
25 | * @param src_mask | |
26 | * The mask to apply to the src ip. | |
27 | * @param dest_ip | |
28 | * The dest ip value to match the input packet. | |
29 | * @param dest_mask | |
30 | * The mask to apply to the dest ip. | |
31 | * @param[out] error | |
32 | * Perform verbose error reporting if not NULL. | |
33 | * | |
34 | * @return | |
35 | * A flow if the rule could be created else return NULL. | |
36 | */ | |
37 | struct rte_flow * | |
38 | generate_ipv4_flow(uint16_t port_id, uint16_t rx_q, | |
39 | uint32_t src_ip, uint32_t src_mask, | |
40 | uint32_t dest_ip, uint32_t dest_mask, | |
41 | struct rte_flow_error *error) | |
42 | { | |
43 | struct rte_flow_attr attr; | |
44 | struct rte_flow_item pattern[MAX_PATTERN_NUM]; | |
9f95a23c | 45 | struct rte_flow_action action[MAX_ACTION_NUM]; |
11fdf7f2 TL |
46 | struct rte_flow *flow = NULL; |
47 | struct rte_flow_action_queue queue = { .index = rx_q }; | |
11fdf7f2 TL |
48 | struct rte_flow_item_ipv4 ip_spec; |
49 | struct rte_flow_item_ipv4 ip_mask; | |
50 | int res; | |
51 | ||
52 | memset(pattern, 0, sizeof(pattern)); | |
53 | memset(action, 0, sizeof(action)); | |
54 | ||
55 | /* | |
56 | * set the rule attribute. | |
57 | * in this case only ingress packets will be checked. | |
58 | */ | |
59 | memset(&attr, 0, sizeof(struct rte_flow_attr)); | |
60 | attr.ingress = 1; | |
61 | ||
62 | /* | |
63 | * create the action sequence. | |
64 | * one action only, move packet to queue | |
65 | */ | |
11fdf7f2 TL |
66 | action[0].type = RTE_FLOW_ACTION_TYPE_QUEUE; |
67 | action[0].conf = &queue; | |
68 | action[1].type = RTE_FLOW_ACTION_TYPE_END; | |
69 | ||
70 | /* | |
9f95a23c | 71 | * set the first level of the pattern (ETH). |
11fdf7f2 TL |
72 | * since in this example we just want to get the |
73 | * ipv4 we set this level to allow all. | |
74 | */ | |
11fdf7f2 | 75 | pattern[0].type = RTE_FLOW_ITEM_TYPE_ETH; |
11fdf7f2 TL |
76 | |
77 | /* | |
9f95a23c | 78 | * setting the second level of the pattern (IP). |
11fdf7f2 TL |
79 | * in this example this is the level we care about |
80 | * so we set it according to the parameters. | |
81 | */ | |
82 | memset(&ip_spec, 0, sizeof(struct rte_flow_item_ipv4)); | |
83 | memset(&ip_mask, 0, sizeof(struct rte_flow_item_ipv4)); | |
84 | ip_spec.hdr.dst_addr = htonl(dest_ip); | |
85 | ip_mask.hdr.dst_addr = dest_mask; | |
86 | ip_spec.hdr.src_addr = htonl(src_ip); | |
87 | ip_mask.hdr.src_addr = src_mask; | |
9f95a23c TL |
88 | pattern[1].type = RTE_FLOW_ITEM_TYPE_IPV4; |
89 | pattern[1].spec = &ip_spec; | |
90 | pattern[1].mask = &ip_mask; | |
11fdf7f2 TL |
91 | |
92 | /* the final level must be always type end */ | |
9f95a23c | 93 | pattern[2].type = RTE_FLOW_ITEM_TYPE_END; |
11fdf7f2 TL |
94 | |
95 | res = rte_flow_validate(port_id, &attr, pattern, action, error); | |
96 | if (!res) | |
97 | flow = rte_flow_create(port_id, &attr, pattern, action, error); | |
98 | ||
99 | return flow; | |
100 | } | |
101 |