Bug Summary

File:home/bhubbard/working/src/ceph/src/spdk/dpdk/lib/librte_mbuf/rte_mbuf_ptype.c
Warning:line 205, column 3
Value stored to 'buflen' is never read

Annotated Source Code

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1/* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2016 6WIND S.A.
3 */
4
5#include <stdint.h>
6
7#include <rte_mbuf.h>
8#include <rte_mbuf_ptype.h>
9
10/* get the name of the l2 packet type */
11const char *rte_get_ptype_l2_name(uint32_t ptype)
12{
13 switch (ptype & RTE_PTYPE_L2_MASK0x0000000f) {
14 case RTE_PTYPE_L2_ETHER0x00000001: return "L2_ETHER";
15 case RTE_PTYPE_L2_ETHER_TIMESYNC0x00000002: return "L2_ETHER_TIMESYNC";
16 case RTE_PTYPE_L2_ETHER_ARP0x00000003: return "L2_ETHER_ARP";
17 case RTE_PTYPE_L2_ETHER_LLDP0x00000004: return "L2_ETHER_LLDP";
18 case RTE_PTYPE_L2_ETHER_NSH0x00000005: return "L2_ETHER_NSH";
19 case RTE_PTYPE_L2_ETHER_VLAN0x00000006: return "L2_ETHER_VLAN";
20 case RTE_PTYPE_L2_ETHER_QINQ0x00000007: return "L2_ETHER_QINQ";
21 case RTE_PTYPE_L2_ETHER_PPPOE0x00000008: return "L2_ETHER_PPPOE";
22 case RTE_PTYPE_L2_ETHER_FCOE0x00000009: return "L2_ETHER_FCOE";
23 case RTE_PTYPE_L2_ETHER_MPLS0x0000000a: return "L2_ETHER_MPLS";
24 default: return "L2_UNKNOWN";
25 }
26}
27
28/* get the name of the l3 packet type */
29const char *rte_get_ptype_l3_name(uint32_t ptype)
30{
31 switch (ptype & RTE_PTYPE_L3_MASK0x000000f0) {
32 case RTE_PTYPE_L3_IPV40x00000010: return "L3_IPV4";
33 case RTE_PTYPE_L3_IPV4_EXT0x00000030: return "L3_IPV4_EXT";
34 case RTE_PTYPE_L3_IPV60x00000040: return "L3_IPV6";
35 case RTE_PTYPE_L3_IPV4_EXT_UNKNOWN0x00000090: return "L3_IPV4_EXT_UNKNOWN";
36 case RTE_PTYPE_L3_IPV6_EXT0x000000c0: return "L3_IPV6_EXT";
37 case RTE_PTYPE_L3_IPV6_EXT_UNKNOWN0x000000e0: return "L3_IPV6_EXT_UNKNOWN";
38 default: return "L3_UNKNOWN";
39 }
40}
41
42/* get the name of the l4 packet type */
43const char *rte_get_ptype_l4_name(uint32_t ptype)
44{
45 switch (ptype & RTE_PTYPE_L4_MASK0x00000f00) {
46 case RTE_PTYPE_L4_TCP0x00000100: return "L4_TCP";
47 case RTE_PTYPE_L4_UDP0x00000200: return "L4_UDP";
48 case RTE_PTYPE_L4_FRAG0x00000300: return "L4_FRAG";
49 case RTE_PTYPE_L4_SCTP0x00000400: return "L4_SCTP";
50 case RTE_PTYPE_L4_ICMP0x00000500: return "L4_ICMP";
51 case RTE_PTYPE_L4_NONFRAG0x00000600: return "L4_NONFRAG";
52 case RTE_PTYPE_L4_IGMP0x00000700: return "L4_IGMP";
53 default: return "L4_UNKNOWN";
54 }
55}
56
57/* get the name of the tunnel packet type */
58const char *rte_get_ptype_tunnel_name(uint32_t ptype)
59{
60 switch (ptype & RTE_PTYPE_TUNNEL_MASK0x0000f000) {
61 case RTE_PTYPE_TUNNEL_IP0x00001000: return "TUNNEL_IP";
62 case RTE_PTYPE_TUNNEL_GRE0x00002000: return "TUNNEL_GRE";
63 case RTE_PTYPE_TUNNEL_VXLAN0x00003000: return "TUNNEL_VXLAN";
64 case RTE_PTYPE_TUNNEL_NVGRE0x00004000: return "TUNNEL_NVGRE";
65 case RTE_PTYPE_TUNNEL_GENEVE0x00005000: return "TUNNEL_GENEVE";
66 case RTE_PTYPE_TUNNEL_GRENAT0x00006000: return "TUNNEL_GRENAT";
67 case RTE_PTYPE_TUNNEL_GTPC0x00007000: return "TUNNEL_GTPC";
68 case RTE_PTYPE_TUNNEL_GTPU0x00008000: return "TUNNEL_GTPU";
69 case RTE_PTYPE_TUNNEL_ESP0x00009000: return "TUNNEL_ESP";
70 case RTE_PTYPE_TUNNEL_L2TP0x0000a000: return "TUNNEL_L2TP";
71 case RTE_PTYPE_TUNNEL_VXLAN_GPE0x0000b000: return "TUNNEL_VXLAN_GPE";
72 case RTE_PTYPE_TUNNEL_MPLS_IN_UDP0x0000d000: return "TUNNEL_MPLS_IN_UDP";
73 case RTE_PTYPE_TUNNEL_MPLS_IN_GRE0x0000c000: return "TUNNEL_MPLS_IN_GRE";
74 default: return "TUNNEL_UNKNOWN";
75 }
76}
77
78/* get the name of the inner_l2 packet type */
79const char *rte_get_ptype_inner_l2_name(uint32_t ptype)
80{
81 switch (ptype & RTE_PTYPE_INNER_L2_MASK0x000f0000) {
82 case RTE_PTYPE_INNER_L2_ETHER0x00010000: return "INNER_L2_ETHER";
83 case RTE_PTYPE_INNER_L2_ETHER_VLAN0x00020000: return "INNER_L2_ETHER_VLAN";
84 case RTE_PTYPE_INNER_L2_ETHER_QINQ0x00030000: return "INNER_L2_ETHER_QINQ";
85 default: return "INNER_L2_UNKNOWN";
86 }
87}
88
89/* get the name of the inner_l3 packet type */
90const char *rte_get_ptype_inner_l3_name(uint32_t ptype)
91{
92 switch (ptype & RTE_PTYPE_INNER_L3_MASK0x00f00000) {
93 case RTE_PTYPE_INNER_L3_IPV40x00100000: return "INNER_L3_IPV4";
94 case RTE_PTYPE_INNER_L3_IPV4_EXT0x00200000: return "INNER_L3_IPV4_EXT";
95 case RTE_PTYPE_INNER_L3_IPV60x00300000: return "INNER_L3_IPV6";
96 case RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN0x00400000:
97 return "INNER_L3_IPV4_EXT_UNKNOWN";
98 case RTE_PTYPE_INNER_L3_IPV6_EXT0x00500000: return "INNER_L3_IPV6_EXT";
99 case RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN0x00600000:
100 return "INNER_L3_IPV6_EXT_UNKNOWN";
101 default: return "INNER_L3_UNKNOWN";
102 }
103}
104
105/* get the name of the inner_l4 packet type */
106const char *rte_get_ptype_inner_l4_name(uint32_t ptype)
107{
108 switch (ptype & RTE_PTYPE_INNER_L4_MASK0x0f000000) {
109 case RTE_PTYPE_INNER_L4_TCP0x01000000: return "INNER_L4_TCP";
110 case RTE_PTYPE_INNER_L4_UDP0x02000000: return "INNER_L4_UDP";
111 case RTE_PTYPE_INNER_L4_FRAG0x03000000: return "INNER_L4_FRAG";
112 case RTE_PTYPE_INNER_L4_SCTP0x04000000: return "INNER_L4_SCTP";
113 case RTE_PTYPE_INNER_L4_ICMP0x05000000: return "INNER_L4_ICMP";
114 case RTE_PTYPE_INNER_L4_NONFRAG0x06000000: return "INNER_L4_NONFRAG";
115 default: return "INNER_L4_UNKNOWN";
116 }
117}
118
119/* write the packet type name into the buffer */
120int rte_get_ptype_name(uint32_t ptype, char *buf, size_t buflen)
121{
122 int ret;
123
124 if (buflen == 0)
125 return -1;
126
127 buf[0] = '\0';
128 if ((ptype & RTE_PTYPE_ALL_MASK0x0fffffff) == RTE_PTYPE_UNKNOWN0x00000000) {
129 ret = snprintf(buf, buflen, "UNKNOWN");
130 if (ret < 0)
131 return -1;
132 if ((size_t)ret >= buflen)
133 return -1;
134 return 0;
135 }
136
137 if ((ptype & RTE_PTYPE_L2_MASK0x0000000f) != 0) {
138 ret = snprintf(buf, buflen, "%s ",
139 rte_get_ptype_l2_name(ptype));
140 if (ret < 0)
141 return -1;
142 if ((size_t)ret >= buflen)
143 return -1;
144 buf += ret;
145 buflen -= ret;
146 }
147 if ((ptype & RTE_PTYPE_L3_MASK0x000000f0) != 0) {
148 ret = snprintf(buf, buflen, "%s ",
149 rte_get_ptype_l3_name(ptype));
150 if (ret < 0)
151 return -1;
152 if ((size_t)ret >= buflen)
153 return -1;
154 buf += ret;
155 buflen -= ret;
156 }
157 if ((ptype & RTE_PTYPE_L4_MASK0x00000f00) != 0) {
158 ret = snprintf(buf, buflen, "%s ",
159 rte_get_ptype_l4_name(ptype));
160 if (ret < 0)
161 return -1;
162 if ((size_t)ret >= buflen)
163 return -1;
164 buf += ret;
165 buflen -= ret;
166 }
167 if ((ptype & RTE_PTYPE_TUNNEL_MASK0x0000f000) != 0) {
168 ret = snprintf(buf, buflen, "%s ",
169 rte_get_ptype_tunnel_name(ptype));
170 if (ret < 0)
171 return -1;
172 if ((size_t)ret >= buflen)
173 return -1;
174 buf += ret;
175 buflen -= ret;
176 }
177 if ((ptype & RTE_PTYPE_INNER_L2_MASK0x000f0000) != 0) {
178 ret = snprintf(buf, buflen, "%s ",
179 rte_get_ptype_inner_l2_name(ptype));
180 if (ret < 0)
181 return -1;
182 if ((size_t)ret >= buflen)
183 return -1;
184 buf += ret;
185 buflen -= ret;
186 }
187 if ((ptype & RTE_PTYPE_INNER_L3_MASK0x00f00000) != 0) {
188 ret = snprintf(buf, buflen, "%s ",
189 rte_get_ptype_inner_l3_name(ptype));
190 if (ret < 0)
191 return -1;
192 if ((size_t)ret >= buflen)
193 return -1;
194 buf += ret;
195 buflen -= ret;
196 }
197 if ((ptype & RTE_PTYPE_INNER_L4_MASK0x0f000000) != 0) {
198 ret = snprintf(buf, buflen, "%s ",
199 rte_get_ptype_inner_l4_name(ptype));
200 if (ret < 0)
201 return -1;
202 if ((size_t)ret >= buflen)
203 return -1;
204 buf += ret;
205 buflen -= ret;
Value stored to 'buflen' is never read
206 }
207
208 return 0;
209}