pico_constants.h

00001 /*********************************************************************
00002 PicoTCP. Copyright (c) 2012 TASS Belgium NV. Some rights reserved.
00003 See LICENSE and COPYING for usage.
00004 
00005 *********************************************************************/
00006 #ifndef _INCLUDE_PICO_CONST
00007 #define _INCLUDE_PICO_CONST
00008 /* Included from pico_config.h */
00009 /** Endian-dependant constants **/
00010 
00011 extern volatile unsigned long pico_tick;
00012 
00013 #ifdef PICO_BIGENDIAN
00014 
00015 # define PICO_IDETH_IPV4 0x0800
00016 # define PICO_IDETH_ARP 0x0806
00017 # define PICO_IDETH_IPV6 0x86DD
00018 
00019 # define PICO_ARP_REQUEST 0x0001
00020 # define PICO_ARP_REPLY   0x0002
00021 # define PICO_ARP_HTYPE_ETH 0x0001
00022 
00023 #define short_be(x) (x)
00024 #define long_be(x) (x)
00025 
00026 static inline uint16_t short_from(void *_p)
00027 {
00028   unsigned char *p = (unsigned char *)_p;
00029   uint16_t r, p0, p1;
00030   p0 = p[0];
00031   p1 = p[1];
00032   r = (p0 << 8) + p1;
00033   return r;
00034 }
00035 
00036 static inline uint32_t long_from(void *_p)
00037 {
00038   unsigned char *p = (unsigned char *)_p;
00039   uint32_t r, p0, p1, p2, p3;
00040   p0 = p[0];
00041   p1 = p[1];
00042   p2 = p[2];
00043   p3 = p[3];
00044   r = (p0 << 24) + (p1 << 16) + (p2 << 8) + p3;
00045   return r;
00046 }
00047 
00048 #else
00049 
00050 static inline uint16_t short_from(void *_p)
00051 {
00052   unsigned char *p = (unsigned char *)_p;
00053   uint16_t r, p0, p1;
00054   p0 = p[0];
00055   p1 = p[1];
00056   r = (p1 << 8) + p0;
00057   return r;
00058 }
00059 
00060 static inline uint32_t long_from(void *_p)
00061 {
00062   unsigned char *p = (unsigned char *)_p;
00063   uint32_t r, p0, p1, p2, p3;
00064   p0 = p[0];
00065   p1 = p[1];
00066   p2 = p[2];
00067   p3 = p[3];
00068   r = (p3 << 24) + (p2 << 16) + (p1 << 8) + p0;
00069   return r;
00070 }
00071 
00072 
00073 # define PICO_IDETH_IPV4 0x0008
00074 # define PICO_IDETH_ARP 0x0608
00075 # define PICO_IDETH_IPV6 0xDD86
00076 
00077 # define PICO_ARP_REQUEST 0x0100
00078 # define PICO_ARP_REPLY   0x0200
00079 # define PICO_ARP_HTYPE_ETH 0x0100
00080 
00081 static inline uint16_t short_be(uint16_t le)
00082 {
00083   return ((le & 0xFF) << 8) | ((le >> 8) & 0xFF);
00084 }
00085 
00086 static inline uint32_t long_be(uint32_t le)
00087 {
00088   uint8_t *b = (uint8_t *)&le;
00089   uint32_t be = 0;
00090   uint32_t b0, b1, b2;
00091   b0 = b[0];
00092   b1 = b[1];
00093   b2 = b[2];
00094   be = b[3] + (b2 << 8) + (b1 << 16) + (b0 << 24);
00095   return be;
00096 }
00097 #endif
00098 
00099 
00100 /* Add well-known host numbers here. (bigendian constants only beyond this point) */
00101 #define PICO_IP4_ANY (0x00000000U)
00102 #define PICO_IP4_BCAST (0xffffffffU)
00103 
00104 /* defined in modules/pico_ipv6.c */
00105 #ifdef PICO_SUPPORT_IPV6
00106 extern const uint8_t PICO_IPV6_ANY[PICO_SIZE_IP6];
00107 #endif
00108 
00109 static inline uint32_t pico_hash(char *name)
00110 {
00111   unsigned long hash = 5381;
00112   int c;
00113   while ((c = *name++))
00114     hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
00115   return hash;
00116 }
00117 
00118 /* Debug */
00119 //#define PICO_SUPPORT_DEBUG_MEMORY
00120 //#define PICO_SUPPORT_DEBUG_TOOLS
00121 #endif