Bug Summary

File:home/bhubbard/working/src/ceph/src/spdk/dpdk/lib/librte_ethdev/rte_flow.c
Warning:line 743, column 17
Dereference of null pointer

Annotated Source Code

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1/* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2016 6WIND S.A.
3 * Copyright 2016 Mellanox Technologies, Ltd
4 */
5
6#include <errno(*__errno_location ()).h>
7#include <stddef.h>
8#include <stdint.h>
9#include <string.h>
10
11#include <rte_common.h>
12#include <rte_errno(per_lcore__rte_errno).h>
13#include <rte_branch_prediction.h>
14#include <rte_string_fns.h>
15#include "rte_ethdev.h"
16#include "rte_flow_driver.h"
17#include "rte_flow.h"
18
19/**
20 * Flow elements description tables.
21 */
22struct rte_flow_desc_data {
23 const char *name;
24 size_t size;
25};
26
27/** Generate flow_item[] entry. */
28#define MK_FLOW_ITEM(t, s)[RTE_FLOW_ITEM_TYPE_t] = { .name = "t", .size = s, } \
29 [RTE_FLOW_ITEM_TYPE_ ## t] = { \
30 .name = # t, \
31 .size = s, \
32 }
33
34/** Information about known flow pattern items. */
35static const struct rte_flow_desc_data rte_flow_desc_item[] = {
36 MK_FLOW_ITEM(END, 0)[RTE_FLOW_ITEM_TYPE_END] = { .name = "END", .size = 0, },
37 MK_FLOW_ITEM(VOID, 0)[RTE_FLOW_ITEM_TYPE_VOID] = { .name = "VOID", .size = 0, },
38 MK_FLOW_ITEM(INVERT, 0)[RTE_FLOW_ITEM_TYPE_INVERT] = { .name = "INVERT", .size = 0, },
39 MK_FLOW_ITEM(ANY, sizeof(struct rte_flow_item_any))[RTE_FLOW_ITEM_TYPE_ANY] = { .name = "ANY", .size = sizeof(struct
rte_flow_item_any), },
40 MK_FLOW_ITEM(PF, 0)[RTE_FLOW_ITEM_TYPE_PF] = { .name = "PF", .size = 0, },
41 MK_FLOW_ITEM(VF, sizeof(struct rte_flow_item_vf))[RTE_FLOW_ITEM_TYPE_VF] = { .name = "VF", .size = sizeof(struct
rte_flow_item_vf), },
42 MK_FLOW_ITEM(PHY_PORT, sizeof(struct rte_flow_item_phy_port))[RTE_FLOW_ITEM_TYPE_PHY_PORT] = { .name = "PHY_PORT", .size =
sizeof(struct rte_flow_item_phy_port), },
43 MK_FLOW_ITEM(PORT_ID, sizeof(struct rte_flow_item_port_id))[RTE_FLOW_ITEM_TYPE_PORT_ID] = { .name = "PORT_ID", .size = sizeof
(struct rte_flow_item_port_id), },
44 MK_FLOW_ITEM(RAW, sizeof(struct rte_flow_item_raw))[RTE_FLOW_ITEM_TYPE_RAW] = { .name = "RAW", .size = sizeof(struct
rte_flow_item_raw), },
45 MK_FLOW_ITEM(ETH, sizeof(struct rte_flow_item_eth))[RTE_FLOW_ITEM_TYPE_ETH] = { .name = "ETH", .size = sizeof(struct
rte_flow_item_eth), },
46 MK_FLOW_ITEM(VLAN, sizeof(struct rte_flow_item_vlan))[RTE_FLOW_ITEM_TYPE_VLAN] = { .name = "VLAN", .size = sizeof(
struct rte_flow_item_vlan), },
47 MK_FLOW_ITEM(IPV4, sizeof(struct rte_flow_item_ipv4))[RTE_FLOW_ITEM_TYPE_IPV4] = { .name = "IPV4", .size = sizeof(
struct rte_flow_item_ipv4), },
48 MK_FLOW_ITEM(IPV6, sizeof(struct rte_flow_item_ipv6))[RTE_FLOW_ITEM_TYPE_IPV6] = { .name = "IPV6", .size = sizeof(
struct rte_flow_item_ipv6), },
49 MK_FLOW_ITEM(ICMP, sizeof(struct rte_flow_item_icmp))[RTE_FLOW_ITEM_TYPE_ICMP] = { .name = "ICMP", .size = sizeof(
struct rte_flow_item_icmp), },
50 MK_FLOW_ITEM(UDP, sizeof(struct rte_flow_item_udp))[RTE_FLOW_ITEM_TYPE_UDP] = { .name = "UDP", .size = sizeof(struct
rte_flow_item_udp), },
51 MK_FLOW_ITEM(TCP, sizeof(struct rte_flow_item_tcp))[RTE_FLOW_ITEM_TYPE_TCP] = { .name = "TCP", .size = sizeof(struct
rte_flow_item_tcp), },
52 MK_FLOW_ITEM(SCTP, sizeof(struct rte_flow_item_sctp))[RTE_FLOW_ITEM_TYPE_SCTP] = { .name = "SCTP", .size = sizeof(
struct rte_flow_item_sctp), },
53 MK_FLOW_ITEM(VXLAN, sizeof(struct rte_flow_item_vxlan))[RTE_FLOW_ITEM_TYPE_VXLAN] = { .name = "VXLAN", .size = sizeof
(struct rte_flow_item_vxlan), },
54 MK_FLOW_ITEM(E_TAG, sizeof(struct rte_flow_item_e_tag))[RTE_FLOW_ITEM_TYPE_E_TAG] = { .name = "E_TAG", .size = sizeof
(struct rte_flow_item_e_tag), },
55 MK_FLOW_ITEM(NVGRE, sizeof(struct rte_flow_item_nvgre))[RTE_FLOW_ITEM_TYPE_NVGRE] = { .name = "NVGRE", .size = sizeof
(struct rte_flow_item_nvgre), },
56 MK_FLOW_ITEM(MPLS, sizeof(struct rte_flow_item_mpls))[RTE_FLOW_ITEM_TYPE_MPLS] = { .name = "MPLS", .size = sizeof(
struct rte_flow_item_mpls), },
57 MK_FLOW_ITEM(GRE, sizeof(struct rte_flow_item_gre))[RTE_FLOW_ITEM_TYPE_GRE] = { .name = "GRE", .size = sizeof(struct
rte_flow_item_gre), },
58 MK_FLOW_ITEM(FUZZY, sizeof(struct rte_flow_item_fuzzy))[RTE_FLOW_ITEM_TYPE_FUZZY] = { .name = "FUZZY", .size = sizeof
(struct rte_flow_item_fuzzy), },
59 MK_FLOW_ITEM(GTP, sizeof(struct rte_flow_item_gtp))[RTE_FLOW_ITEM_TYPE_GTP] = { .name = "GTP", .size = sizeof(struct
rte_flow_item_gtp), },
60 MK_FLOW_ITEM(GTPC, sizeof(struct rte_flow_item_gtp))[RTE_FLOW_ITEM_TYPE_GTPC] = { .name = "GTPC", .size = sizeof(
struct rte_flow_item_gtp), },
61 MK_FLOW_ITEM(GTPU, sizeof(struct rte_flow_item_gtp))[RTE_FLOW_ITEM_TYPE_GTPU] = { .name = "GTPU", .size = sizeof(
struct rte_flow_item_gtp), },
62 MK_FLOW_ITEM(ESP, sizeof(struct rte_flow_item_esp))[RTE_FLOW_ITEM_TYPE_ESP] = { .name = "ESP", .size = sizeof(struct
rte_flow_item_esp), },
63 MK_FLOW_ITEM(GENEVE, sizeof(struct rte_flow_item_geneve))[RTE_FLOW_ITEM_TYPE_GENEVE] = { .name = "GENEVE", .size = sizeof
(struct rte_flow_item_geneve), },
64 MK_FLOW_ITEM(VXLAN_GPE, sizeof(struct rte_flow_item_vxlan_gpe))[RTE_FLOW_ITEM_TYPE_VXLAN_GPE] = { .name = "VXLAN_GPE", .size
= sizeof(struct rte_flow_item_vxlan_gpe), },
65 MK_FLOW_ITEM(ARP_ETH_IPV4, sizeof(struct rte_flow_item_arp_eth_ipv4))[RTE_FLOW_ITEM_TYPE_ARP_ETH_IPV4] = { .name = "ARP_ETH_IPV4",
.size = sizeof(struct rte_flow_item_arp_eth_ipv4), },
66 MK_FLOW_ITEM(IPV6_EXT, sizeof(struct rte_flow_item_ipv6_ext))[RTE_FLOW_ITEM_TYPE_IPV6_EXT] = { .name = "IPV6_EXT", .size =
sizeof(struct rte_flow_item_ipv6_ext), },
67 MK_FLOW_ITEM(ICMP6, sizeof(struct rte_flow_item_icmp6))[RTE_FLOW_ITEM_TYPE_ICMP6] = { .name = "ICMP6", .size = sizeof
(struct rte_flow_item_icmp6), },
68 MK_FLOW_ITEM(ICMP6_ND_NS, sizeof(struct rte_flow_item_icmp6_nd_ns))[RTE_FLOW_ITEM_TYPE_ICMP6_ND_NS] = { .name = "ICMP6_ND_NS", .
size = sizeof(struct rte_flow_item_icmp6_nd_ns), },
69 MK_FLOW_ITEM(ICMP6_ND_NA, sizeof(struct rte_flow_item_icmp6_nd_na))[RTE_FLOW_ITEM_TYPE_ICMP6_ND_NA] = { .name = "ICMP6_ND_NA", .
size = sizeof(struct rte_flow_item_icmp6_nd_na), },
70 MK_FLOW_ITEM(ICMP6_ND_OPT, sizeof(struct rte_flow_item_icmp6_nd_opt))[RTE_FLOW_ITEM_TYPE_ICMP6_ND_OPT] = { .name = "ICMP6_ND_OPT",
.size = sizeof(struct rte_flow_item_icmp6_nd_opt), },
71 MK_FLOW_ITEM(ICMP6_ND_OPT_SLA_ETH,[RTE_FLOW_ITEM_TYPE_ICMP6_ND_OPT_SLA_ETH] = { .name = "ICMP6_ND_OPT_SLA_ETH"
, .size = sizeof(struct rte_flow_item_icmp6_nd_opt_sla_eth), }
72 sizeof(struct rte_flow_item_icmp6_nd_opt_sla_eth))[RTE_FLOW_ITEM_TYPE_ICMP6_ND_OPT_SLA_ETH] = { .name = "ICMP6_ND_OPT_SLA_ETH"
, .size = sizeof(struct rte_flow_item_icmp6_nd_opt_sla_eth), },
73 MK_FLOW_ITEM(ICMP6_ND_OPT_TLA_ETH,[RTE_FLOW_ITEM_TYPE_ICMP6_ND_OPT_TLA_ETH] = { .name = "ICMP6_ND_OPT_TLA_ETH"
, .size = sizeof(struct rte_flow_item_icmp6_nd_opt_tla_eth), }
74 sizeof(struct rte_flow_item_icmp6_nd_opt_tla_eth))[RTE_FLOW_ITEM_TYPE_ICMP6_ND_OPT_TLA_ETH] = { .name = "ICMP6_ND_OPT_TLA_ETH"
, .size = sizeof(struct rte_flow_item_icmp6_nd_opt_tla_eth), },
75 MK_FLOW_ITEM(MARK, sizeof(struct rte_flow_item_mark))[RTE_FLOW_ITEM_TYPE_MARK] = { .name = "MARK", .size = sizeof(
struct rte_flow_item_mark), },
76 MK_FLOW_ITEM(META, sizeof(struct rte_flow_item_meta))[RTE_FLOW_ITEM_TYPE_META] = { .name = "META", .size = sizeof(
struct rte_flow_item_meta), },
77};
78
79/** Generate flow_action[] entry. */
80#define MK_FLOW_ACTION(t, s)[RTE_FLOW_ACTION_TYPE_t] = { .name = "t", .size = s, } \
81 [RTE_FLOW_ACTION_TYPE_ ## t] = { \
82 .name = # t, \
83 .size = s, \
84 }
85
86/** Information about known flow actions. */
87static const struct rte_flow_desc_data rte_flow_desc_action[] = {
88 MK_FLOW_ACTION(END, 0)[RTE_FLOW_ACTION_TYPE_END] = { .name = "END", .size = 0, },
89 MK_FLOW_ACTION(VOID, 0)[RTE_FLOW_ACTION_TYPE_VOID] = { .name = "VOID", .size = 0, },
90 MK_FLOW_ACTION(PASSTHRU, 0)[RTE_FLOW_ACTION_TYPE_PASSTHRU] = { .name = "PASSTHRU", .size
= 0, },
91 MK_FLOW_ACTION(JUMP, sizeof(struct rte_flow_action_jump))[RTE_FLOW_ACTION_TYPE_JUMP] = { .name = "JUMP", .size = sizeof
(struct rte_flow_action_jump), },
92 MK_FLOW_ACTION(MARK, sizeof(struct rte_flow_action_mark))[RTE_FLOW_ACTION_TYPE_MARK] = { .name = "MARK", .size = sizeof
(struct rte_flow_action_mark), },
93 MK_FLOW_ACTION(FLAG, 0)[RTE_FLOW_ACTION_TYPE_FLAG] = { .name = "FLAG", .size = 0, },
94 MK_FLOW_ACTION(QUEUE, sizeof(struct rte_flow_action_queue))[RTE_FLOW_ACTION_TYPE_QUEUE] = { .name = "QUEUE", .size = sizeof
(struct rte_flow_action_queue), },
95 MK_FLOW_ACTION(DROP, 0)[RTE_FLOW_ACTION_TYPE_DROP] = { .name = "DROP", .size = 0, },
96 MK_FLOW_ACTION(COUNT, sizeof(struct rte_flow_action_count))[RTE_FLOW_ACTION_TYPE_COUNT] = { .name = "COUNT", .size = sizeof
(struct rte_flow_action_count), },
97 MK_FLOW_ACTION(RSS, sizeof(struct rte_flow_action_rss))[RTE_FLOW_ACTION_TYPE_RSS] = { .name = "RSS", .size = sizeof(
struct rte_flow_action_rss), },
98 MK_FLOW_ACTION(PF, 0)[RTE_FLOW_ACTION_TYPE_PF] = { .name = "PF", .size = 0, },
99 MK_FLOW_ACTION(VF, sizeof(struct rte_flow_action_vf))[RTE_FLOW_ACTION_TYPE_VF] = { .name = "VF", .size = sizeof(struct
rte_flow_action_vf), },
100 MK_FLOW_ACTION(PHY_PORT, sizeof(struct rte_flow_action_phy_port))[RTE_FLOW_ACTION_TYPE_PHY_PORT] = { .name = "PHY_PORT", .size
= sizeof(struct rte_flow_action_phy_port), },
101 MK_FLOW_ACTION(PORT_ID, sizeof(struct rte_flow_action_port_id))[RTE_FLOW_ACTION_TYPE_PORT_ID] = { .name = "PORT_ID", .size =
sizeof(struct rte_flow_action_port_id), },
102 MK_FLOW_ACTION(METER, sizeof(struct rte_flow_action_meter))[RTE_FLOW_ACTION_TYPE_METER] = { .name = "METER", .size = sizeof
(struct rte_flow_action_meter), },
103 MK_FLOW_ACTION(SECURITY, sizeof(struct rte_flow_action_security))[RTE_FLOW_ACTION_TYPE_SECURITY] = { .name = "SECURITY", .size
= sizeof(struct rte_flow_action_security), },
104 MK_FLOW_ACTION(OF_SET_MPLS_TTL,[RTE_FLOW_ACTION_TYPE_OF_SET_MPLS_TTL] = { .name = "OF_SET_MPLS_TTL"
, .size = sizeof(struct rte_flow_action_of_set_mpls_ttl), }
105 sizeof(struct rte_flow_action_of_set_mpls_ttl))[RTE_FLOW_ACTION_TYPE_OF_SET_MPLS_TTL] = { .name = "OF_SET_MPLS_TTL"
, .size = sizeof(struct rte_flow_action_of_set_mpls_ttl), },
106 MK_FLOW_ACTION(OF_DEC_MPLS_TTL, 0)[RTE_FLOW_ACTION_TYPE_OF_DEC_MPLS_TTL] = { .name = "OF_DEC_MPLS_TTL"
, .size = 0, },
107 MK_FLOW_ACTION(OF_SET_NW_TTL,[RTE_FLOW_ACTION_TYPE_OF_SET_NW_TTL] = { .name = "OF_SET_NW_TTL"
, .size = sizeof(struct rte_flow_action_of_set_nw_ttl), }
108 sizeof(struct rte_flow_action_of_set_nw_ttl))[RTE_FLOW_ACTION_TYPE_OF_SET_NW_TTL] = { .name = "OF_SET_NW_TTL"
, .size = sizeof(struct rte_flow_action_of_set_nw_ttl), },
109 MK_FLOW_ACTION(OF_DEC_NW_TTL, 0)[RTE_FLOW_ACTION_TYPE_OF_DEC_NW_TTL] = { .name = "OF_DEC_NW_TTL"
, .size = 0, },
110 MK_FLOW_ACTION(OF_COPY_TTL_OUT, 0)[RTE_FLOW_ACTION_TYPE_OF_COPY_TTL_OUT] = { .name = "OF_COPY_TTL_OUT"
, .size = 0, },
111 MK_FLOW_ACTION(OF_COPY_TTL_IN, 0)[RTE_FLOW_ACTION_TYPE_OF_COPY_TTL_IN] = { .name = "OF_COPY_TTL_IN"
, .size = 0, },
112 MK_FLOW_ACTION(OF_POP_VLAN, 0)[RTE_FLOW_ACTION_TYPE_OF_POP_VLAN] = { .name = "OF_POP_VLAN",
.size = 0, },
113 MK_FLOW_ACTION(OF_PUSH_VLAN,[RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN] = { .name = "OF_PUSH_VLAN"
, .size = sizeof(struct rte_flow_action_of_push_vlan), }
114 sizeof(struct rte_flow_action_of_push_vlan))[RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN] = { .name = "OF_PUSH_VLAN"
, .size = sizeof(struct rte_flow_action_of_push_vlan), },
115 MK_FLOW_ACTION(OF_SET_VLAN_VID,[RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID] = { .name = "OF_SET_VLAN_VID"
, .size = sizeof(struct rte_flow_action_of_set_vlan_vid), }
116 sizeof(struct rte_flow_action_of_set_vlan_vid))[RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID] = { .name = "OF_SET_VLAN_VID"
, .size = sizeof(struct rte_flow_action_of_set_vlan_vid), },
117 MK_FLOW_ACTION(OF_SET_VLAN_PCP,[RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP] = { .name = "OF_SET_VLAN_PCP"
, .size = sizeof(struct rte_flow_action_of_set_vlan_pcp), }
118 sizeof(struct rte_flow_action_of_set_vlan_pcp))[RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP] = { .name = "OF_SET_VLAN_PCP"
, .size = sizeof(struct rte_flow_action_of_set_vlan_pcp), },
119 MK_FLOW_ACTION(OF_POP_MPLS,[RTE_FLOW_ACTION_TYPE_OF_POP_MPLS] = { .name = "OF_POP_MPLS",
.size = sizeof(struct rte_flow_action_of_pop_mpls), }
120 sizeof(struct rte_flow_action_of_pop_mpls))[RTE_FLOW_ACTION_TYPE_OF_POP_MPLS] = { .name = "OF_POP_MPLS",
.size = sizeof(struct rte_flow_action_of_pop_mpls), },
121 MK_FLOW_ACTION(OF_PUSH_MPLS,[RTE_FLOW_ACTION_TYPE_OF_PUSH_MPLS] = { .name = "OF_PUSH_MPLS"
, .size = sizeof(struct rte_flow_action_of_push_mpls), }
122 sizeof(struct rte_flow_action_of_push_mpls))[RTE_FLOW_ACTION_TYPE_OF_PUSH_MPLS] = { .name = "OF_PUSH_MPLS"
, .size = sizeof(struct rte_flow_action_of_push_mpls), },
123 MK_FLOW_ACTION(VXLAN_ENCAP, sizeof(struct rte_flow_action_vxlan_encap))[RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP] = { .name = "VXLAN_ENCAP",
.size = sizeof(struct rte_flow_action_vxlan_encap), },
124 MK_FLOW_ACTION(VXLAN_DECAP, 0)[RTE_FLOW_ACTION_TYPE_VXLAN_DECAP] = { .name = "VXLAN_DECAP",
.size = 0, },
125 MK_FLOW_ACTION(NVGRE_ENCAP, sizeof(struct rte_flow_action_vxlan_encap))[RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP] = { .name = "NVGRE_ENCAP",
.size = sizeof(struct rte_flow_action_vxlan_encap), },
126 MK_FLOW_ACTION(NVGRE_DECAP, 0)[RTE_FLOW_ACTION_TYPE_NVGRE_DECAP] = { .name = "NVGRE_DECAP",
.size = 0, },
127 MK_FLOW_ACTION(RAW_ENCAP, sizeof(struct rte_flow_action_raw_encap))[RTE_FLOW_ACTION_TYPE_RAW_ENCAP] = { .name = "RAW_ENCAP", .size
= sizeof(struct rte_flow_action_raw_encap), },
128 MK_FLOW_ACTION(RAW_DECAP, sizeof(struct rte_flow_action_raw_decap))[RTE_FLOW_ACTION_TYPE_RAW_DECAP] = { .name = "RAW_DECAP", .size
= sizeof(struct rte_flow_action_raw_decap), },
129 MK_FLOW_ACTION(SET_IPV4_SRC,[RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC] = { .name = "SET_IPV4_SRC"
, .size = sizeof(struct rte_flow_action_set_ipv4), }
130 sizeof(struct rte_flow_action_set_ipv4))[RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC] = { .name = "SET_IPV4_SRC"
, .size = sizeof(struct rte_flow_action_set_ipv4), },
131 MK_FLOW_ACTION(SET_IPV4_DST,[RTE_FLOW_ACTION_TYPE_SET_IPV4_DST] = { .name = "SET_IPV4_DST"
, .size = sizeof(struct rte_flow_action_set_ipv4), }
132 sizeof(struct rte_flow_action_set_ipv4))[RTE_FLOW_ACTION_TYPE_SET_IPV4_DST] = { .name = "SET_IPV4_DST"
, .size = sizeof(struct rte_flow_action_set_ipv4), },
133 MK_FLOW_ACTION(SET_IPV6_SRC,[RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC] = { .name = "SET_IPV6_SRC"
, .size = sizeof(struct rte_flow_action_set_ipv6), }
134 sizeof(struct rte_flow_action_set_ipv6))[RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC] = { .name = "SET_IPV6_SRC"
, .size = sizeof(struct rte_flow_action_set_ipv6), },
135 MK_FLOW_ACTION(SET_IPV6_DST,[RTE_FLOW_ACTION_TYPE_SET_IPV6_DST] = { .name = "SET_IPV6_DST"
, .size = sizeof(struct rte_flow_action_set_ipv6), }
136 sizeof(struct rte_flow_action_set_ipv6))[RTE_FLOW_ACTION_TYPE_SET_IPV6_DST] = { .name = "SET_IPV6_DST"
, .size = sizeof(struct rte_flow_action_set_ipv6), },
137 MK_FLOW_ACTION(SET_TP_SRC,[RTE_FLOW_ACTION_TYPE_SET_TP_SRC] = { .name = "SET_TP_SRC", .
size = sizeof(struct rte_flow_action_set_tp), }
138 sizeof(struct rte_flow_action_set_tp))[RTE_FLOW_ACTION_TYPE_SET_TP_SRC] = { .name = "SET_TP_SRC", .
size = sizeof(struct rte_flow_action_set_tp), },
139 MK_FLOW_ACTION(SET_TP_DST,[RTE_FLOW_ACTION_TYPE_SET_TP_DST] = { .name = "SET_TP_DST", .
size = sizeof(struct rte_flow_action_set_tp), }
140 sizeof(struct rte_flow_action_set_tp))[RTE_FLOW_ACTION_TYPE_SET_TP_DST] = { .name = "SET_TP_DST", .
size = sizeof(struct rte_flow_action_set_tp), },
141 MK_FLOW_ACTION(MAC_SWAP, 0)[RTE_FLOW_ACTION_TYPE_MAC_SWAP] = { .name = "MAC_SWAP", .size
= 0, },
142 MK_FLOW_ACTION(DEC_TTL, 0)[RTE_FLOW_ACTION_TYPE_DEC_TTL] = { .name = "DEC_TTL", .size =
0, },
143 MK_FLOW_ACTION(SET_TTL, sizeof(struct rte_flow_action_set_ttl))[RTE_FLOW_ACTION_TYPE_SET_TTL] = { .name = "SET_TTL", .size =
sizeof(struct rte_flow_action_set_ttl), },
144 MK_FLOW_ACTION(SET_MAC_SRC, sizeof(struct rte_flow_action_set_mac))[RTE_FLOW_ACTION_TYPE_SET_MAC_SRC] = { .name = "SET_MAC_SRC",
.size = sizeof(struct rte_flow_action_set_mac), },
145 MK_FLOW_ACTION(SET_MAC_DST, sizeof(struct rte_flow_action_set_mac))[RTE_FLOW_ACTION_TYPE_SET_MAC_DST] = { .name = "SET_MAC_DST",
.size = sizeof(struct rte_flow_action_set_mac), },
146};
147
148static int
149flow_err(uint16_t port_id, int ret, struct rte_flow_error *error)
150{
151 if (ret == 0)
152 return 0;
153 if (rte_eth_dev_is_removed(port_id))
154 return rte_flow_error_set(error, EIO5,
155 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
156 NULL((void*)0), rte_strerror(EIO5));
157 return ret;
158}
159
160/* Get generic flow operations structure from a port. */
161const struct rte_flow_ops *
162rte_flow_ops_get(uint16_t port_id, struct rte_flow_error *error)
163{
164 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
165 const struct rte_flow_ops *ops;
166 int code;
167
168 if (unlikely(!rte_eth_dev_is_valid_port(port_id))__builtin_expect(!!(!rte_eth_dev_is_valid_port(port_id)), 0))
169 code = ENODEV19;
170 else if (unlikely(!dev->dev_ops->filter_ctrl ||__builtin_expect(!!(!dev->dev_ops->filter_ctrl || dev->
dev_ops->filter_ctrl(dev, RTE_ETH_FILTER_GENERIC, RTE_ETH_FILTER_GET
, &ops) || !ops), 0)
171 dev->dev_ops->filter_ctrl(dev,__builtin_expect(!!(!dev->dev_ops->filter_ctrl || dev->
dev_ops->filter_ctrl(dev, RTE_ETH_FILTER_GENERIC, RTE_ETH_FILTER_GET
, &ops) || !ops), 0)
172 RTE_ETH_FILTER_GENERIC,__builtin_expect(!!(!dev->dev_ops->filter_ctrl || dev->
dev_ops->filter_ctrl(dev, RTE_ETH_FILTER_GENERIC, RTE_ETH_FILTER_GET
, &ops) || !ops), 0)
173 RTE_ETH_FILTER_GET,__builtin_expect(!!(!dev->dev_ops->filter_ctrl || dev->
dev_ops->filter_ctrl(dev, RTE_ETH_FILTER_GENERIC, RTE_ETH_FILTER_GET
, &ops) || !ops), 0)
174 &ops) ||__builtin_expect(!!(!dev->dev_ops->filter_ctrl || dev->
dev_ops->filter_ctrl(dev, RTE_ETH_FILTER_GENERIC, RTE_ETH_FILTER_GET
, &ops) || !ops), 0)
175 !ops)__builtin_expect(!!(!dev->dev_ops->filter_ctrl || dev->
dev_ops->filter_ctrl(dev, RTE_ETH_FILTER_GENERIC, RTE_ETH_FILTER_GET
, &ops) || !ops), 0))
176 code = ENOSYS38;
177 else
178 return ops;
179 rte_flow_error_set(error, code, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
180 NULL((void*)0), rte_strerror(code));
181 return NULL((void*)0);
182}
183
184/* Check whether a flow rule can be created on a given port. */
185int
186rte_flow_validate(uint16_t port_id,
187 const struct rte_flow_attr *attr,
188 const struct rte_flow_item pattern[],
189 const struct rte_flow_action actions[],
190 struct rte_flow_error *error)
191{
192 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
193 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
194
195 if (unlikely(!ops)__builtin_expect(!!(!ops), 0))
196 return -rte_errno(per_lcore__rte_errno);
197 if (likely(!!ops->validate)__builtin_expect(!!(!!ops->validate), 1))
198 return flow_err(port_id, ops->validate(dev, attr, pattern,
199 actions, error), error);
200 return rte_flow_error_set(error, ENOSYS38,
201 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
202 NULL((void*)0), rte_strerror(ENOSYS38));
203}
204
205/* Create a flow rule on a given port. */
206struct rte_flow *
207rte_flow_create(uint16_t port_id,
208 const struct rte_flow_attr *attr,
209 const struct rte_flow_item pattern[],
210 const struct rte_flow_action actions[],
211 struct rte_flow_error *error)
212{
213 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
214 struct rte_flow *flow;
215 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
216
217 if (unlikely(!ops)__builtin_expect(!!(!ops), 0))
218 return NULL((void*)0);
219 if (likely(!!ops->create)__builtin_expect(!!(!!ops->create), 1)) {
220 flow = ops->create(dev, attr, pattern, actions, error);
221 if (flow == NULL((void*)0))
222 flow_err(port_id, -rte_errno(per_lcore__rte_errno), error);
223 return flow;
224 }
225 rte_flow_error_set(error, ENOSYS38, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
226 NULL((void*)0), rte_strerror(ENOSYS38));
227 return NULL((void*)0);
228}
229
230/* Destroy a flow rule on a given port. */
231int
232rte_flow_destroy(uint16_t port_id,
233 struct rte_flow *flow,
234 struct rte_flow_error *error)
235{
236 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
237 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
238
239 if (unlikely(!ops)__builtin_expect(!!(!ops), 0))
240 return -rte_errno(per_lcore__rte_errno);
241 if (likely(!!ops->destroy)__builtin_expect(!!(!!ops->destroy), 1))
242 return flow_err(port_id, ops->destroy(dev, flow, error),
243 error);
244 return rte_flow_error_set(error, ENOSYS38,
245 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
246 NULL((void*)0), rte_strerror(ENOSYS38));
247}
248
249/* Destroy all flow rules associated with a port. */
250int
251rte_flow_flush(uint16_t port_id,
252 struct rte_flow_error *error)
253{
254 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
255 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
256
257 if (unlikely(!ops)__builtin_expect(!!(!ops), 0))
258 return -rte_errno(per_lcore__rte_errno);
259 if (likely(!!ops->flush)__builtin_expect(!!(!!ops->flush), 1))
260 return flow_err(port_id, ops->flush(dev, error), error);
261 return rte_flow_error_set(error, ENOSYS38,
262 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
263 NULL((void*)0), rte_strerror(ENOSYS38));
264}
265
266/* Query an existing flow rule. */
267int
268rte_flow_query(uint16_t port_id,
269 struct rte_flow *flow,
270 const struct rte_flow_action *action,
271 void *data,
272 struct rte_flow_error *error)
273{
274 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
275 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
276
277 if (!ops)
278 return -rte_errno(per_lcore__rte_errno);
279 if (likely(!!ops->query)__builtin_expect(!!(!!ops->query), 1))
280 return flow_err(port_id, ops->query(dev, flow, action, data,
281 error), error);
282 return rte_flow_error_set(error, ENOSYS38,
283 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
284 NULL((void*)0), rte_strerror(ENOSYS38));
285}
286
287/* Restrict ingress traffic to the defined flow rules. */
288int
289rte_flow_isolate(uint16_t port_id,
290 int set,
291 struct rte_flow_error *error)
292{
293 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
294 const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
295
296 if (!ops)
297 return -rte_errno(per_lcore__rte_errno);
298 if (likely(!!ops->isolate)__builtin_expect(!!(!!ops->isolate), 1))
299 return flow_err(port_id, ops->isolate(dev, set, error), error);
300 return rte_flow_error_set(error, ENOSYS38,
301 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
302 NULL((void*)0), rte_strerror(ENOSYS38));
303}
304
305/* Initialize flow error structure. */
306int
307rte_flow_error_set(struct rte_flow_error *error,
308 int code,
309 enum rte_flow_error_type type,
310 const void *cause,
311 const char *message)
312{
313 if (error) {
314 *error = (struct rte_flow_error){
315 .type = type,
316 .cause = cause,
317 .message = message,
318 };
319 }
320 rte_errno(per_lcore__rte_errno) = code;
321 return -code;
322}
323
324/** Pattern item specification types. */
325enum rte_flow_conv_item_spec_type {
326 RTE_FLOW_CONV_ITEM_SPEC,
327 RTE_FLOW_CONV_ITEM_LAST,
328 RTE_FLOW_CONV_ITEM_MASK,
329};
330
331/**
332 * Copy pattern item specification.
333 *
334 * @param[out] buf
335 * Output buffer. Can be NULL if @p size is zero.
336 * @param size
337 * Size of @p buf in bytes.
338 * @param[in] item
339 * Pattern item to copy specification from.
340 * @param type
341 * Specification selector for either @p spec, @p last or @p mask.
342 *
343 * @return
344 * Number of bytes needed to store pattern item specification regardless
345 * of @p size. @p buf contents are truncated to @p size if not large
346 * enough.
347 */
348static size_t
349rte_flow_conv_item_spec(void *buf, const size_t size,
350 const struct rte_flow_item *item,
351 enum rte_flow_conv_item_spec_type type)
352{
353 size_t off;
354 const void *data =
355 type == RTE_FLOW_CONV_ITEM_SPEC ? item->spec :
356 type == RTE_FLOW_CONV_ITEM_LAST ? item->last :
357 type == RTE_FLOW_CONV_ITEM_MASK ? item->mask :
358 NULL((void*)0);
359
360 switch (item->type) {
361 union {
362 const struct rte_flow_item_raw *raw;
363 } spec;
364 union {
365 const struct rte_flow_item_raw *raw;
366 } last;
367 union {
368 const struct rte_flow_item_raw *raw;
369 } mask;
370 union {
371 const struct rte_flow_item_raw *raw;
372 } src;
373 union {
374 struct rte_flow_item_raw *raw;
375 } dst;
376 size_t tmp;
377
378 case RTE_FLOW_ITEM_TYPE_RAW:
379 spec.raw = item->spec;
380 last.raw = item->last ? item->last : item->spec;
381 mask.raw = item->mask ? item->mask : &rte_flow_item_raw_mask;
382 src.raw = data;
383 dst.raw = buf;
384 rte_memcpy(dst.raw,
385 (&(struct rte_flow_item_raw){
386 .relative = src.raw->relative,
387 .search = src.raw->search,
388 .reserved = src.raw->reserved,
389 .offset = src.raw->offset,
390 .limit = src.raw->limit,
391 .length = src.raw->length,
392 }),
393 size > sizeof(*dst.raw) ? sizeof(*dst.raw) : size);
394 off = sizeof(*dst.raw);
395 if (type == RTE_FLOW_CONV_ITEM_SPEC ||
396 (type == RTE_FLOW_CONV_ITEM_MASK &&
397 ((spec.raw->length & mask.raw->length) >=
398 (last.raw->length & mask.raw->length))))
399 tmp = spec.raw->length & mask.raw->length;
400 else
401 tmp = last.raw->length & mask.raw->length;
402 if (tmp) {
403 off = RTE_ALIGN_CEIL(off, sizeof(*dst.raw->pattern))(__typeof__(((off) + ((__typeof__(off)) (sizeof(*dst.raw->
pattern)) - 1))))((((off) + ((__typeof__(off)) (sizeof(*dst.raw
->pattern)) - 1))) & (~((__typeof__(((off) + ((__typeof__
(off)) (sizeof(*dst.raw->pattern)) - 1))))((sizeof(*dst.raw
->pattern)) - 1))));
404 if (size >= off + tmp)
405 dst.raw->pattern = rte_memcpy
406 ((void *)((uintptr_t)dst.raw + off),
407 src.raw->pattern, tmp);
408 off += tmp;
409 }
410 break;
411 default:
412 off = rte_flow_desc_item[item->type].size;
413 rte_memcpy(buf, data, (size > off ? off : size));
414 break;
415 }
416 return off;
417}
418
419/**
420 * Copy action configuration.
421 *
422 * @param[out] buf
423 * Output buffer. Can be NULL if @p size is zero.
424 * @param size
425 * Size of @p buf in bytes.
426 * @param[in] action
427 * Action to copy configuration from.
428 *
429 * @return
430 * Number of bytes needed to store pattern item specification regardless
431 * of @p size. @p buf contents are truncated to @p size if not large
432 * enough.
433 */
434static size_t
435rte_flow_conv_action_conf(void *buf, const size_t size,
436 const struct rte_flow_action *action)
437{
438 size_t off;
439
440 switch (action->type) {
441 union {
442 const struct rte_flow_action_rss *rss;
443 const struct rte_flow_action_vxlan_encap *vxlan_encap;
444 const struct rte_flow_action_nvgre_encap *nvgre_encap;
445 } src;
446 union {
447 struct rte_flow_action_rss *rss;
448 struct rte_flow_action_vxlan_encap *vxlan_encap;
449 struct rte_flow_action_nvgre_encap *nvgre_encap;
450 } dst;
451 size_t tmp;
452 int ret;
453
454 case RTE_FLOW_ACTION_TYPE_RSS:
455 src.rss = action->conf;
456 dst.rss = buf;
457 rte_memcpy(dst.rss,
458 (&(struct rte_flow_action_rss){
459 .func = src.rss->func,
460 .level = src.rss->level,
461 .types = src.rss->types,
462 .key_len = src.rss->key_len,
463 .queue_num = src.rss->queue_num,
464 }),
465 size > sizeof(*dst.rss) ? sizeof(*dst.rss) : size);
466 off = sizeof(*dst.rss);
467 if (src.rss->key_len) {
468 off = RTE_ALIGN_CEIL(off, sizeof(*dst.rss->key))(__typeof__(((off) + ((__typeof__(off)) (sizeof(*dst.rss->
key)) - 1))))((((off) + ((__typeof__(off)) (sizeof(*dst.rss->
key)) - 1))) & (~((__typeof__(((off) + ((__typeof__(off))
(sizeof(*dst.rss->key)) - 1))))((sizeof(*dst.rss->key)
) - 1))));
469 tmp = sizeof(*src.rss->key) * src.rss->key_len;
470 if (size >= off + tmp)
471 dst.rss->key = rte_memcpy
472 ((void *)((uintptr_t)dst.rss + off),
473 src.rss->key, tmp);
474 off += tmp;
475 }
476 if (src.rss->queue_num) {
477 off = RTE_ALIGN_CEIL(off, sizeof(*dst.rss->queue))(__typeof__(((off) + ((__typeof__(off)) (sizeof(*dst.rss->
queue)) - 1))))((((off) + ((__typeof__(off)) (sizeof(*dst.rss
->queue)) - 1))) & (~((__typeof__(((off) + ((__typeof__
(off)) (sizeof(*dst.rss->queue)) - 1))))((sizeof(*dst.rss->
queue)) - 1))));
478 tmp = sizeof(*src.rss->queue) * src.rss->queue_num;
479 if (size >= off + tmp)
480 dst.rss->queue = rte_memcpy
481 ((void *)((uintptr_t)dst.rss + off),
482 src.rss->queue, tmp);
483 off += tmp;
484 }
485 break;
486 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
487 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
488 src.vxlan_encap = action->conf;
489 dst.vxlan_encap = buf;
490 RTE_BUILD_BUG_ON(sizeof(*src.vxlan_encap) !=((void)sizeof(char[1 - 2*!!(sizeof(*src.vxlan_encap) != sizeof
(*src.nvgre_encap) || __builtin_offsetof(struct rte_flow_action_vxlan_encap
, definition) != __builtin_offsetof(struct rte_flow_action_nvgre_encap
, definition))]))
491 sizeof(*src.nvgre_encap) ||((void)sizeof(char[1 - 2*!!(sizeof(*src.vxlan_encap) != sizeof
(*src.nvgre_encap) || __builtin_offsetof(struct rte_flow_action_vxlan_encap
, definition) != __builtin_offsetof(struct rte_flow_action_nvgre_encap
, definition))]))
492 offsetof(struct rte_flow_action_vxlan_encap,((void)sizeof(char[1 - 2*!!(sizeof(*src.vxlan_encap) != sizeof
(*src.nvgre_encap) || __builtin_offsetof(struct rte_flow_action_vxlan_encap
, definition) != __builtin_offsetof(struct rte_flow_action_nvgre_encap
, definition))]))
493 definition) !=((void)sizeof(char[1 - 2*!!(sizeof(*src.vxlan_encap) != sizeof
(*src.nvgre_encap) || __builtin_offsetof(struct rte_flow_action_vxlan_encap
, definition) != __builtin_offsetof(struct rte_flow_action_nvgre_encap
, definition))]))
494 offsetof(struct rte_flow_action_nvgre_encap,((void)sizeof(char[1 - 2*!!(sizeof(*src.vxlan_encap) != sizeof
(*src.nvgre_encap) || __builtin_offsetof(struct rte_flow_action_vxlan_encap
, definition) != __builtin_offsetof(struct rte_flow_action_nvgre_encap
, definition))]))
495 definition))((void)sizeof(char[1 - 2*!!(sizeof(*src.vxlan_encap) != sizeof
(*src.nvgre_encap) || __builtin_offsetof(struct rte_flow_action_vxlan_encap
, definition) != __builtin_offsetof(struct rte_flow_action_nvgre_encap
, definition))]));
496 off = sizeof(*dst.vxlan_encap);
497 if (src.vxlan_encap->definition) {
498 off = RTE_ALIGN_CEIL(__typeof__(((off) + ((__typeof__(off)) (sizeof(*dst.vxlan_encap
->definition)) - 1))))((((off) + ((__typeof__(off)) (sizeof
(*dst.vxlan_encap->definition)) - 1))) & (~((__typeof__
(((off) + ((__typeof__(off)) (sizeof(*dst.vxlan_encap->definition
)) - 1))))((sizeof(*dst.vxlan_encap->definition)) - 1))))
499 (off, sizeof(*dst.vxlan_encap->definition))(__typeof__(((off) + ((__typeof__(off)) (sizeof(*dst.vxlan_encap
->definition)) - 1))))((((off) + ((__typeof__(off)) (sizeof
(*dst.vxlan_encap->definition)) - 1))) & (~((__typeof__
(((off) + ((__typeof__(off)) (sizeof(*dst.vxlan_encap->definition
)) - 1))))((sizeof(*dst.vxlan_encap->definition)) - 1))));
500 ret = rte_flow_conv
501 (RTE_FLOW_CONV_OP_PATTERN,
502 (void *)((uintptr_t)dst.vxlan_encap + off),
503 size > off ? size - off : 0,
504 src.vxlan_encap->definition, NULL((void*)0));
505 if (ret < 0)
506 return 0;
507 if (size >= off + ret)
508 dst.vxlan_encap->definition =
509 (void *)((uintptr_t)dst.vxlan_encap +
510 off);
511 off += ret;
512 }
513 break;
514 default:
515 off = rte_flow_desc_action[action->type].size;
516 rte_memcpy(buf, action->conf, (size > off ? off : size));
517 break;
518 }
519 return off;
520}
521
522/**
523 * Copy a list of pattern items.
524 *
525 * @param[out] dst
526 * Destination buffer. Can be NULL if @p size is zero.
527 * @param size
528 * Size of @p dst in bytes.
529 * @param[in] src
530 * Source pattern items.
531 * @param num
532 * Maximum number of pattern items to process from @p src or 0 to process
533 * the entire list. In both cases, processing stops after
534 * RTE_FLOW_ITEM_TYPE_END is encountered.
535 * @param[out] error
536 * Perform verbose error reporting if not NULL.
537 *
538 * @return
539 * A positive value representing the number of bytes needed to store
540 * pattern items regardless of @p size on success (@p buf contents are
541 * truncated to @p size if not large enough), a negative errno value
542 * otherwise and rte_errno is set.
543 */
544static int
545rte_flow_conv_pattern(struct rte_flow_item *dst,
546 const size_t size,
547 const struct rte_flow_item *src,
548 unsigned int num,
549 struct rte_flow_error *error)
550{
551 uintptr_t data = (uintptr_t)dst;
552 size_t off;
553 size_t ret;
554 unsigned int i;
555
556 for (i = 0, off = 0; !num || i != num; ++i, ++src, ++dst) {
557 if ((size_t)src->type >= RTE_DIM(rte_flow_desc_item)(sizeof (rte_flow_desc_item) / sizeof ((rte_flow_desc_item)[0
])) ||
558 !rte_flow_desc_item[src->type].name)
559 return rte_flow_error_set
560 (error, ENOTSUP95, RTE_FLOW_ERROR_TYPE_ITEM, src,
561 "cannot convert unknown item type");
562 if (size >= off + sizeof(*dst))
563 *dst = (struct rte_flow_item){
564 .type = src->type,
565 };
566 off += sizeof(*dst);
567 if (!src->type)
568 num = i + 1;
569 }
570 num = i;
571 src -= num;
572 dst -= num;
573 do {
574 if (src->spec) {
575 off = RTE_ALIGN_CEIL(off, sizeof(double))(__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) - 1)
)))((((off) + ((__typeof__(off)) (sizeof(double)) - 1))) &
(~((__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) -
1))))((sizeof(double)) - 1))));
576 ret = rte_flow_conv_item_spec
577 ((void *)(data + off),
578 size > off ? size - off : 0, src,
579 RTE_FLOW_CONV_ITEM_SPEC);
580 if (size && size >= off + ret)
581 dst->spec = (void *)(data + off);
582 off += ret;
583
584 }
585 if (src->last) {
586 off = RTE_ALIGN_CEIL(off, sizeof(double))(__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) - 1)
)))((((off) + ((__typeof__(off)) (sizeof(double)) - 1))) &
(~((__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) -
1))))((sizeof(double)) - 1))));
587 ret = rte_flow_conv_item_spec
588 ((void *)(data + off),
589 size > off ? size - off : 0, src,
590 RTE_FLOW_CONV_ITEM_LAST);
591 if (size && size >= off + ret)
592 dst->last = (void *)(data + off);
593 off += ret;
594 }
595 if (src->mask) {
596 off = RTE_ALIGN_CEIL(off, sizeof(double))(__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) - 1)
)))((((off) + ((__typeof__(off)) (sizeof(double)) - 1))) &
(~((__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) -
1))))((sizeof(double)) - 1))));
597 ret = rte_flow_conv_item_spec
598 ((void *)(data + off),
599 size > off ? size - off : 0, src,
600 RTE_FLOW_CONV_ITEM_MASK);
601 if (size && size >= off + ret)
602 dst->mask = (void *)(data + off);
603 off += ret;
604 }
605 ++src;
606 ++dst;
607 } while (--num);
608 return off;
609}
610
611/**
612 * Copy a list of actions.
613 *
614 * @param[out] dst
615 * Destination buffer. Can be NULL if @p size is zero.
616 * @param size
617 * Size of @p dst in bytes.
618 * @param[in] src
619 * Source actions.
620 * @param num
621 * Maximum number of actions to process from @p src or 0 to process the
622 * entire list. In both cases, processing stops after
623 * RTE_FLOW_ACTION_TYPE_END is encountered.
624 * @param[out] error
625 * Perform verbose error reporting if not NULL.
626 *
627 * @return
628 * A positive value representing the number of bytes needed to store
629 * actions regardless of @p size on success (@p buf contents are truncated
630 * to @p size if not large enough), a negative errno value otherwise and
631 * rte_errno is set.
632 */
633static int
634rte_flow_conv_actions(struct rte_flow_action *dst,
635 const size_t size,
636 const struct rte_flow_action *src,
637 unsigned int num,
638 struct rte_flow_error *error)
639{
640 uintptr_t data = (uintptr_t)dst;
641 size_t off;
642 size_t ret;
643 unsigned int i;
644
645 for (i = 0, off = 0; !num || i != num; ++i, ++src, ++dst) {
646 if ((size_t)src->type >= RTE_DIM(rte_flow_desc_action)(sizeof (rte_flow_desc_action) / sizeof ((rte_flow_desc_action
)[0])) ||
647 !rte_flow_desc_action[src->type].name)
648 return rte_flow_error_set
649 (error, ENOTSUP95, RTE_FLOW_ERROR_TYPE_ACTION,
650 src, "cannot convert unknown action type");
651 if (size >= off + sizeof(*dst))
652 *dst = (struct rte_flow_action){
653 .type = src->type,
654 };
655 off += sizeof(*dst);
656 if (!src->type)
657 num = i + 1;
658 }
659 num = i;
660 src -= num;
661 dst -= num;
662 do {
663 if (src->conf) {
664 off = RTE_ALIGN_CEIL(off, sizeof(double))(__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) - 1)
)))((((off) + ((__typeof__(off)) (sizeof(double)) - 1))) &
(~((__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) -
1))))((sizeof(double)) - 1))));
665 ret = rte_flow_conv_action_conf
666 ((void *)(data + off),
667 size > off ? size - off : 0, src);
668 if (size && size >= off + ret)
669 dst->conf = (void *)(data + off);
670 off += ret;
671 }
672 ++src;
673 ++dst;
674 } while (--num);
675 return off;
676}
677
678/**
679 * Copy flow rule components.
680 *
681 * This comprises the flow rule descriptor itself, attributes, pattern and
682 * actions list. NULL components in @p src are skipped.
683 *
684 * @param[out] dst
685 * Destination buffer. Can be NULL if @p size is zero.
686 * @param size
687 * Size of @p dst in bytes.
688 * @param[in] src
689 * Source flow rule descriptor.
690 * @param[out] error
691 * Perform verbose error reporting if not NULL.
692 *
693 * @return
694 * A positive value representing the number of bytes needed to store all
695 * components including the descriptor regardless of @p size on success
696 * (@p buf contents are truncated to @p size if not large enough), a
697 * negative errno value otherwise and rte_errno is set.
698 */
699static int
700rte_flow_conv_rule(struct rte_flow_conv_rule *dst,
701 const size_t size,
702 const struct rte_flow_conv_rule *src,
703 struct rte_flow_error *error)
704{
705 size_t off;
706 int ret;
707
708 rte_memcpy(dst,
709 (&(struct rte_flow_conv_rule){
710 .attr = NULL((void*)0),
711 .pattern = NULL((void*)0),
712 .actions = NULL((void*)0),
713 }),
714 size > sizeof(*dst) ? sizeof(*dst) : size);
10
←
'?' condition is false
→
715 off = sizeof(*dst);
716 if (src->attr_ro) {
11
←
Taking false branch
→
717 off = RTE_ALIGN_CEIL(off, sizeof(double))(__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) - 1)
)))((((off) + ((__typeof__(off)) (sizeof(double)) - 1))) &
(~((__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) -
1))))((sizeof(double)) - 1))));
718 if (size && size >= off + sizeof(*dst->attr))
719 dst->attr = rte_memcpy
720 ((void *)((uintptr_t)dst + off),
721 src->attr_ro, sizeof(*dst->attr));
722 off += sizeof(*dst->attr);
723 }
724 if (src->pattern_ro) {
12
←
Taking true branch
→
725 off = RTE_ALIGN_CEIL(off, sizeof(double))(__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) - 1)
)))((((off) + ((__typeof__(off)) (sizeof(double)) - 1))) &
(~((__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) -
1))))((sizeof(double)) - 1))));
726 ret = rte_flow_conv_pattern((void *)((uintptr_t)dst + off),
727 size > off ? size - off : 0,
13
←
'?' condition is false
→
728 src->pattern_ro, 0, error);
729 if (ret < 0)
14
←
Assuming 'ret' is >= 0
→
15
←
Taking false branch
→
730 return ret;
731 if (size && size >= off + (size_t)ret)
732 dst->pattern = (void *)((uintptr_t)dst + off);
733 off += ret;
734 }
735 if (src->actions_ro) {
16
←
Taking true branch
→
736 off = RTE_ALIGN_CEIL(off, sizeof(double))(__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) - 1)
)))((((off) + ((__typeof__(off)) (sizeof(double)) - 1))) &
(~((__typeof__(((off) + ((__typeof__(off)) (sizeof(double)) -
1))))((sizeof(double)) - 1))));
737 ret = rte_flow_conv_actions((void *)((uintptr_t)dst + off),
738 size > off ? size - off : 0,
17
←
'?' condition is false
→
739 src->actions_ro, 0, error);
740 if (ret < 0)
18
←
Assuming 'ret' is >= 0
→
19
←
Taking false branch
→
741 return ret;
742 if (size >= off + (size_t)ret)
20
←
Taking true branch
→
743 dst->actions = (void *)((uintptr_t)dst + off);
21
←
Dereference of null pointer
744 off += ret;
745 }
746 return off;
747}
748
749/**
750 * Retrieve the name of a pattern item/action type.
751 *
752 * @param is_action
753 * Nonzero when @p src represents an action type instead of a pattern item
754 * type.
755 * @param is_ptr
756 * Nonzero to write string address instead of contents into @p dst.
757 * @param[out] dst
758 * Destination buffer. Can be NULL if @p size is zero.
759 * @param size
760 * Size of @p dst in bytes.
761 * @param[in] src
762 * Depending on @p is_action, source pattern item or action type cast as a
763 * pointer.
764 * @param[out] error
765 * Perform verbose error reporting if not NULL.
766 *
767 * @return
768 * A positive value representing the number of bytes needed to store the
769 * name or its address regardless of @p size on success (@p buf contents
770 * are truncated to @p size if not large enough), a negative errno value
771 * otherwise and rte_errno is set.
772 */
773static int
774rte_flow_conv_name(int is_action,
775 int is_ptr,
776 char *dst,
777 const size_t size,
778 const void *src,
779 struct rte_flow_error *error)
780{
781 struct desc_info {
782 const struct rte_flow_desc_data *data;
783 size_t num;
784 };
785 static const struct desc_info info_rep[2] = {
786 { rte_flow_desc_item, RTE_DIM(rte_flow_desc_item)(sizeof (rte_flow_desc_item) / sizeof ((rte_flow_desc_item)[0
])), },
787 { rte_flow_desc_action, RTE_DIM(rte_flow_desc_action)(sizeof (rte_flow_desc_action) / sizeof ((rte_flow_desc_action
)[0])), },
788 };
789 const struct desc_info *const info = &info_rep[!!is_action];
790 unsigned int type = (uintptr_t)src;
791
792 if (type >= info->num)
793 return rte_flow_error_set
794 (error, EINVAL22, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL((void*)0),
795 "unknown object type to retrieve the name of");
796 if (!is_ptr)
797 return strlcpy(dst, info->data[type].name, size)rte_strlcpy(dst, info->data[type].name, size);
798 if (size >= sizeof(const char **))
799 *((const char **)dst) = info->data[type].name;
800 return sizeof(const char **);
801}
802
803/** Helper function to convert flow API objects. */
804int
805rte_flow_conv(enum rte_flow_conv_op op,
806 void *dst,
807 size_t size,
808 const void *src,
809 struct rte_flow_error *error)
810{
811 switch (op) {
7
←
Control jumps to 'case RTE_FLOW_CONV_OP_RULE:' at line 830
→
812 const struct rte_flow_attr *attr;
813
814 case RTE_FLOW_CONV_OP_NONE:
815 return 0;
816 case RTE_FLOW_CONV_OP_ATTR:
817 attr = src;
818 if (size > sizeof(*attr))
819 size = sizeof(*attr);
820 rte_memcpy(dst, attr, size);
821 return sizeof(*attr);
822 case RTE_FLOW_CONV_OP_ITEM:
823 return rte_flow_conv_pattern(dst, size, src, 1, error);
824 case RTE_FLOW_CONV_OP_ACTION:
825 return rte_flow_conv_actions(dst, size, src, 1, error);
826 case RTE_FLOW_CONV_OP_PATTERN:
827 return rte_flow_conv_pattern(dst, size, src, 0, error);
828 case RTE_FLOW_CONV_OP_ACTIONS:
829 return rte_flow_conv_actions(dst, size, src, 0, error);
830 case RTE_FLOW_CONV_OP_RULE:
831 return rte_flow_conv_rule(dst, size, src, error);
8
←
Passing null pointer value via 1st parameter 'dst'
→
9
←
Calling 'rte_flow_conv_rule'
→
832 case RTE_FLOW_CONV_OP_ITEM_NAME:
833 return rte_flow_conv_name(0, 0, dst, size, src, error);
834 case RTE_FLOW_CONV_OP_ACTION_NAME:
835 return rte_flow_conv_name(1, 0, dst, size, src, error);
836 case RTE_FLOW_CONV_OP_ITEM_NAME_PTR:
837 return rte_flow_conv_name(0, 1, dst, size, src, error);
838 case RTE_FLOW_CONV_OP_ACTION_NAME_PTR:
839 return rte_flow_conv_name(1, 1, dst, size, src, error);
840 }
841 return rte_flow_error_set
842 (error, ENOTSUP95, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL((void*)0),
843 "unknown object conversion operation");
844}
845
846/** Store a full rte_flow description. */
847size_t
848rte_flow_copy(struct rte_flow_desc *desc, size_t len,
849 const struct rte_flow_attr *attr,
850 const struct rte_flow_item *items,
851 const struct rte_flow_action *actions)
852{
853 /*
854 * Overlap struct rte_flow_conv with struct rte_flow_desc in order
855 * to convert the former to the latter without wasting space.
856 */
857 struct rte_flow_conv_rule *dst =
3
←
'dst' initialized to a null pointer value
→
858 len ?
1
Assuming 'len' is 0
→
2
←
'?' condition is false
→
859 (void *)((uintptr_t)desc +
860 (offsetof(struct rte_flow_desc, actions)__builtin_offsetof(struct rte_flow_desc, actions) -
861 offsetof(struct rte_flow_conv_rule, actions)__builtin_offsetof(struct rte_flow_conv_rule, actions))) :
862 NULL((void*)0);
863 size_t dst_size =
864 len > sizeof(*desc) - sizeof(*dst) ?
4
←
'?' condition is false
→
865 len - (sizeof(*desc) - sizeof(*dst)) :
866 0;
867 struct rte_flow_conv_rule src = {
868 .attr_ro = NULL((void*)0),
869 .pattern_ro = items,
870 .actions_ro = actions,
871 };
872 int ret;
873
874 RTE_BUILD_BUG_ON(sizeof(struct rte_flow_desc) <((void)sizeof(char[1 - 2*!!(sizeof(struct rte_flow_desc) <
sizeof(struct rte_flow_conv_rule))]))
875 sizeof(struct rte_flow_conv_rule))((void)sizeof(char[1 - 2*!!(sizeof(struct rte_flow_desc) <
sizeof(struct rte_flow_conv_rule))]));
876 if (dst_size &&
877 (&dst->pattern != &desc->items ||
878 &dst->actions != &desc->actions ||
879 (uintptr_t)(dst + 1) != (uintptr_t)(desc + 1))) {
880 rte_errno(per_lcore__rte_errno) = EINVAL22;
881 return 0;
882 }
883 ret = rte_flow_conv(RTE_FLOW_CONV_OP_RULE, dst, dst_size, &src, NULL((void*)0));
5
←
Passing null pointer value via 2nd parameter 'dst'
→
6
←
Calling 'rte_flow_conv'
→
884 if (ret < 0)
885 return 0;
886 ret += sizeof(*desc) - sizeof(*dst);
887 rte_memcpy(desc,
888 (&(struct rte_flow_desc){
889 .size = ret,
890 .attr = *attr,
891 .items = dst_size ? dst->pattern : NULL((void*)0),
892 .actions = dst_size ? dst->actions : NULL((void*)0),
893 }),
894 len > sizeof(*desc) ? sizeof(*desc) : len);
895 return ret;
896}
897
898/**
899 * Expand RSS flows into several possible flows according to the RSS hash
900 * fields requested and the driver capabilities.
901 */
902int __rte_experimental__attribute__((section(".text.experimental")))
903rte_flow_expand_rss(struct rte_flow_expand_rss *buf, size_t size,
904 const struct rte_flow_item *pattern, uint64_t types,
905 const struct rte_flow_expand_node graph[],
906 int graph_root_index)
907{
908 const int elt_n = 8;
909 const struct rte_flow_item *item;
910 const struct rte_flow_expand_node *node = &graph[graph_root_index];
911 const int *next_node;
912 const int *stack[elt_n];
913 int stack_pos = 0;
914 struct rte_flow_item flow_items[elt_n];
915 unsigned int i;
916 size_t lsize;
917 size_t user_pattern_size = 0;
918 void *addr = NULL((void*)0);
919
920 lsize = offsetof(struct rte_flow_expand_rss, entry)__builtin_offsetof(struct rte_flow_expand_rss, entry) +
921 elt_n * sizeof(buf->entry[0]);
922 if (lsize <= size) {
923 buf->entry[0].priority = 0;
924 buf->entry[0].pattern = (void *)&buf->entry[elt_n];
925 buf->entries = 0;
926 addr = buf->entry[0].pattern;
927 }
928 for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
929 const struct rte_flow_expand_node *next = NULL((void*)0);
930
931 for (i = 0; node->next && node->next[i]; ++i) {
932 next = &graph[node->next[i]];
933 if (next->type == item->type)
934 break;
935 }
936 if (next)
937 node = next;
938 user_pattern_size += sizeof(*item);
939 }
940 user_pattern_size += sizeof(*item); /* Handle END item. */
941 lsize += user_pattern_size;
942 /* Copy the user pattern in the first entry of the buffer. */
943 if (lsize <= size) {
944 rte_memcpy(addr, pattern, user_pattern_size);
945 addr = (void *)(((uintptr_t)addr) + user_pattern_size);
946 buf->entries = 1;
947 }
948 /* Start expanding. */
949 memset(flow_items, 0, sizeof(flow_items));
950 user_pattern_size -= sizeof(*item);
951 next_node = node->next;
952 stack[stack_pos] = next_node;
953 node = next_node ? &graph[*next_node] : NULL((void*)0);
954 while (node) {
955 flow_items[stack_pos].type = node->type;
956 if (node->rss_types & types) {
957 /*
958 * compute the number of items to copy from the
959 * expansion and copy it.
960 * When the stack_pos is 0, there are 1 element in it,
961 * plus the addition END item.
962 */
963 int elt = stack_pos + 2;
964
965 flow_items[stack_pos + 1].type = RTE_FLOW_ITEM_TYPE_END;
966 lsize += elt * sizeof(*item) + user_pattern_size;
967 if (lsize <= size) {
968 size_t n = elt * sizeof(*item);
969
970 buf->entry[buf->entries].priority =
971 stack_pos + 1;
972 buf->entry[buf->entries].pattern = addr;
973 buf->entries++;
974 rte_memcpy(addr, buf->entry[0].pattern,
975 user_pattern_size);
976 addr = (void *)(((uintptr_t)addr) +
977 user_pattern_size);
978 rte_memcpy(addr, flow_items, n);
979 addr = (void *)(((uintptr_t)addr) + n);
980 }
981 }
982 /* Go deeper. */
983 if (node->next) {
984 next_node = node->next;
985 if (stack_pos++ == elt_n) {
986 rte_errno(per_lcore__rte_errno) = E2BIG7;
987 return -rte_errno(per_lcore__rte_errno);
988 }
989 stack[stack_pos] = next_node;
990 } else if (*(next_node + 1)) {
991 /* Follow up with the next possibility. */
992 ++next_node;
993 } else {
994 /* Move to the next path. */
995 if (stack_pos)
996 next_node = stack[--stack_pos];
997 next_node++;
998 stack[stack_pos] = next_node;
999 }
1000 node = *next_node ? &graph[*next_node] : NULL((void*)0);
1001 };
1002 return lsize;
1003}