1 #include <stdbool.h> 2 #include <stdint.h> 3 #include <stdio.h> 4 #include <linux/ip.h> 5 6 #ifndef IPTOS_NORMALSVC 7 # define IPTOS_NORMALSVC 0 8 #endif 9 10 struct tos_value_mask { 11 uint8_t value, mask; 12 }; 13 14 static const struct tos_symbol_info { 15 unsigned char value; 16 const char *name; 17 } tos_symbol_names[] = { 18 {IPTOS_LOWDELAY, "Minimize-Delay"}, 19 {IPTOS_THROUGHPUT, "Maximize-Throughput"}, 20 {IPTOS_RELIABILITY, "Maximize-Reliability"}, 21 {IPTOS_MINCOST, "Minimize-Cost"}, 22 {IPTOS_NORMALSVC, "Normal-Service"}, 23 {}, 24 }; 25 26 static bool tos_try_print_symbolic(const char *prefix, 27 uint8_t value, uint8_t mask) 28 { 29 const struct tos_symbol_info *symbol; 30 31 if (mask != 0x3F) 32 return false; 33 34 for (symbol = tos_symbol_names; symbol->name != NULL; ++symbol) 35 if (value == symbol->value) { 36 printf(" %s%s", prefix, symbol->name); 37 return true; 38 } 39 40 return false; 41 } 42
