1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2017 Mellanox Technologies, Ltd
5 #define MAX_PATTERN_NUM 4
8 generate_ipv4_flow(uint16_t port_id, uint16_t rx_q,
9 uint32_t src_ip, uint32_t src_mask,
10 uint32_t dest_ip, uint32_t dest_mask,
11 struct rte_flow_error *error);
15 * create a flow rule that sends packets with matching src and dest ip
21 * The selected target queue.
23 * The src ip value to match the input packet.
25 * The mask to apply to the src ip.
27 * The dest ip value to match the input packet.
29 * The mask to apply to the dest ip.
31 * Perform verbose error reporting if not NULL.
34 * A flow if the rule could be created else return NULL.
37 generate_ipv4_flow(uint16_t port_id, uint16_t rx_q,
38 uint32_t src_ip, uint32_t src_mask,
39 uint32_t dest_ip, uint32_t dest_mask,
40 struct rte_flow_error *error)
42 struct rte_flow_attr attr;
43 struct rte_flow_item pattern[MAX_PATTERN_NUM];
44 struct rte_flow_action action[MAX_PATTERN_NUM];
45 struct rte_flow *flow = NULL;
46 struct rte_flow_action_queue queue = { .index = rx_q };
47 struct rte_flow_item_eth eth_spec;
48 struct rte_flow_item_eth eth_mask;
49 struct rte_flow_item_ipv4 ip_spec;
50 struct rte_flow_item_ipv4 ip_mask;
53 memset(pattern, 0, sizeof(pattern));
54 memset(action, 0, sizeof(action));
57 * set the rule attribute.
58 * in this case only ingress packets will be checked.
60 memset(&attr, 0, sizeof(struct rte_flow_attr));
64 * create the action sequence.
65 * one action only, move packet to queue
68 action[0].type = RTE_FLOW_ACTION_TYPE_QUEUE;
69 action[0].conf = &queue;
70 action[1].type = RTE_FLOW_ACTION_TYPE_END;
73 * set the first level of the pattern (eth).
74 * since in this example we just want to get the
75 * ipv4 we set this level to allow all.
77 memset(ð_spec, 0, sizeof(struct rte_flow_item_eth));
78 memset(ð_mask, 0, sizeof(struct rte_flow_item_eth));
81 pattern[0].type = RTE_FLOW_ITEM_TYPE_ETH;
82 pattern[0].spec = ð_spec;
83 pattern[0].mask = ð_mask;
86 * setting the third level of the pattern (ip).
87 * in this example this is the level we care about
88 * so we set it according to the parameters.
90 memset(&ip_spec, 0, sizeof(struct rte_flow_item_ipv4));
91 memset(&ip_mask, 0, sizeof(struct rte_flow_item_ipv4));
92 ip_spec.hdr.dst_addr = htonl(dest_ip);
93 ip_mask.hdr.dst_addr = dest_mask;
94 ip_spec.hdr.src_addr = htonl(src_ip);
95 ip_mask.hdr.src_addr = src_mask;
96 pattern[1].type = RTE_FLOW_ITEM_TYPE_IPV4;
97 pattern[1].spec = &ip_spec;
98 pattern[1].mask = &ip_mask;
100 /* the final level must be always type end */
101 pattern[2].type = RTE_FLOW_ITEM_TYPE_END;
103 res = rte_flow_validate(port_id, &attr, pattern, action, error);
105 flow = rte_flow_create(port_id, &attr, pattern, action, error);