From Philip Frey (bug 2420):
authorstig <stig@f5534014-38df-0310-8fa8-9805f1628bb7>
Sat, 12 Apr 2008 12:31:53 +0000 (12:31 +0000)
committerstig <stig@f5534014-38df-0310-8fa8-9805f1628bb7>
Sat, 12 Apr 2008 12:31:53 +0000 (12:31 +0000)
Merge of the CRC32C calculation out of packet-iscsi.c and packet-sctp.c
into the already existing crc32.c and crc32.h files.

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@24930 f5534014-38df-0310-8fa8-9805f1628bb7

epan/crc32.c
epan/crc32.h
epan/dissectors/packet-iscsi.c
epan/dissectors/packet-sctp.c

index 9775a3be48f793bc7fd8fc45dbad8af5e0435252..11062c0139f99ae6242628d60695df3253afa78b 100644 (file)
 #include <epan/tvbuff.h>
 #include <epan/crc32.h>
 
+/*****************************************************************/
+/*                                                               */
+/* CRC32C LOOKUP TABLE                                           */
+/* +++================                                           */
+/* The following CRC lookup table was generated automagically    */
+/* by the Rocksoft^tm Model CRC Algorithm Table Generation       */
+/* Program V1.0 using the following model parameters:            */
+/*                                                               */
+/*    Width   : 4 bytes.                                         */
+/*    Poly    : 0x1EDC6F41L                                      */
+/*    Reverse : TRUE.                                            */
+/*                                                               */
+/* For more information on the Rocksoft^tm Model CRC Algorithm,  */
+/* see the document titled "A Painless Guide to CRC Error        */
+/* Detection Algorithms" by Ross Williams                        */
+/* (ross@guest.adelaide.edu.au.). This document is likely to be  */
+/* in the FTP archive "ftp.adelaide.edu.au/pub/rocksoft".        */
+/*                                                               */
+/*****************************************************************/
+const guint32 crc32c_table[256] = {
+               0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L, 0xC79A971FL,
+               0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL, 0x8AD958CFL, 0x78B2DBCCL,
+               0x6BE22838L, 0x9989AB3BL, 0x4D43CFD0L, 0xBF284CD3L, 0xAC78BF27L,
+               0x5E133C24L, 0x105EC76FL, 0xE235446CL, 0xF165B798L, 0x030E349BL,
+               0xD7C45070L, 0x25AFD373L, 0x36FF2087L, 0xC494A384L, 0x9A879FA0L,
+               0x68EC1CA3L, 0x7BBCEF57L, 0x89D76C54L, 0x5D1D08BFL, 0xAF768BBCL,
+               0xBC267848L, 0x4E4DFB4BL, 0x20BD8EDEL, 0xD2D60DDDL, 0xC186FE29L,
+               0x33ED7D2AL, 0xE72719C1L, 0x154C9AC2L, 0x061C6936L, 0xF477EA35L,
+               0xAA64D611L, 0x580F5512L, 0x4B5FA6E6L, 0xB93425E5L, 0x6DFE410EL,
+               0x9F95C20DL, 0x8CC531F9L, 0x7EAEB2FAL, 0x30E349B1L, 0xC288CAB2L,
+               0xD1D83946L, 0x23B3BA45L, 0xF779DEAEL, 0x05125DADL, 0x1642AE59L,
+               0xE4292D5AL, 0xBA3A117EL, 0x4851927DL, 0x5B016189L, 0xA96AE28AL,
+               0x7DA08661L, 0x8FCB0562L, 0x9C9BF696L, 0x6EF07595L, 0x417B1DBCL,
+               0xB3109EBFL, 0xA0406D4BL, 0x522BEE48L, 0x86E18AA3L, 0x748A09A0L,
+               0x67DAFA54L, 0x95B17957L, 0xCBA24573L, 0x39C9C670L, 0x2A993584L,
+               0xD8F2B687L, 0x0C38D26CL, 0xFE53516FL, 0xED03A29BL, 0x1F682198L,
+               0x5125DAD3L, 0xA34E59D0L, 0xB01EAA24L, 0x42752927L, 0x96BF4DCCL,
+               0x64D4CECFL, 0x77843D3BL, 0x85EFBE38L, 0xDBFC821CL, 0x2997011FL,
+               0x3AC7F2EBL, 0xC8AC71E8L, 0x1C661503L, 0xEE0D9600L, 0xFD5D65F4L,
+               0x0F36E6F7L, 0x61C69362L, 0x93AD1061L, 0x80FDE395L, 0x72966096L,
+               0xA65C047DL, 0x5437877EL, 0x4767748AL, 0xB50CF789L, 0xEB1FCBADL,
+               0x197448AEL, 0x0A24BB5AL, 0xF84F3859L, 0x2C855CB2L, 0xDEEEDFB1L,
+               0xCDBE2C45L, 0x3FD5AF46L, 0x7198540DL, 0x83F3D70EL, 0x90A324FAL,
+               0x62C8A7F9L, 0xB602C312L, 0x44694011L, 0x5739B3E5L, 0xA55230E6L,
+               0xFB410CC2L, 0x092A8FC1L, 0x1A7A7C35L, 0xE811FF36L, 0x3CDB9BDDL,
+               0xCEB018DEL, 0xDDE0EB2AL, 0x2F8B6829L, 0x82F63B78L, 0x709DB87BL,
+               0x63CD4B8FL, 0x91A6C88CL, 0x456CAC67L, 0xB7072F64L, 0xA457DC90L,
+               0x563C5F93L, 0x082F63B7L, 0xFA44E0B4L, 0xE9141340L, 0x1B7F9043L,
+               0xCFB5F4A8L, 0x3DDE77ABL, 0x2E8E845FL, 0xDCE5075CL, 0x92A8FC17L,
+               0x60C37F14L, 0x73938CE0L, 0x81F80FE3L, 0x55326B08L, 0xA759E80BL,
+               0xB4091BFFL, 0x466298FCL, 0x1871A4D8L, 0xEA1A27DBL, 0xF94AD42FL,
+               0x0B21572CL, 0xDFEB33C7L, 0x2D80B0C4L, 0x3ED04330L, 0xCCBBC033L,
+               0xA24BB5A6L, 0x502036A5L, 0x4370C551L, 0xB11B4652L, 0x65D122B9L,
+               0x97BAA1BAL, 0x84EA524EL, 0x7681D14DL, 0x2892ED69L, 0xDAF96E6AL,
+               0xC9A99D9EL, 0x3BC21E9DL, 0xEF087A76L, 0x1D63F975L, 0x0E330A81L,
+               0xFC588982L, 0xB21572C9L, 0x407EF1CAL, 0x532E023EL, 0xA145813DL,
+               0x758FE5D6L, 0x87E466D5L, 0x94B49521L, 0x66DF1622L, 0x38CC2A06L,
+               0xCAA7A905L, 0xD9F75AF1L, 0x2B9CD9F2L, 0xFF56BD19L, 0x0D3D3E1AL,
+               0x1E6DCDEEL, 0xEC064EEDL, 0xC38D26C4L, 0x31E6A5C7L, 0x22B65633L,
+               0xD0DDD530L, 0x0417B1DBL, 0xF67C32D8L, 0xE52CC12CL, 0x1747422FL,
+               0x49547E0BL, 0xBB3FFD08L, 0xA86F0EFCL, 0x5A048DFFL, 0x8ECEE914L,
+               0x7CA56A17L, 0x6FF599E3L, 0x9D9E1AE0L, 0xD3D3E1ABL, 0x21B862A8L,
+               0x32E8915CL, 0xC083125FL, 0x144976B4L, 0xE622F5B7L, 0xF5720643L,
+               0x07198540L, 0x590AB964L, 0xAB613A67L, 0xB831C993L, 0x4A5A4A90L,
+               0x9E902E7BL, 0x6CFBAD78L, 0x7FAB5E8CL, 0x8DC0DD8FL, 0xE330A81AL,
+               0x115B2B19L, 0x020BD8EDL, 0xF0605BEEL, 0x24AA3F05L, 0xD6C1BC06L,
+               0xC5914FF2L, 0x37FACCF1L, 0x69E9F0D5L, 0x9B8273D6L, 0x88D28022L,
+               0x7AB90321L, 0xAE7367CAL, 0x5C18E4C9L, 0x4F48173DL, 0xBD23943EL,
+               0xF36E6F75L, 0x0105EC76L, 0x12551F82L, 0xE03E9C81L, 0x34F4F86AL,
+               0xC69F7B69L, 0xD5CF889DL, 0x27A40B9EL, 0x79B737BAL, 0x8BDCB4B9L,
+               0x988C474DL, 0x6AE7C44EL, 0xBE2DA0A5L, 0x4C4623A6L, 0x5F16D052L,
+               0xAD7D5351L };
+
 /*
  * Table for the AUTODIN/HDLC/802.x CRC.
  *
@@ -98,6 +171,16 @@ const guint32 crc32_ccitt_table[256] = {
 
 #define CRC32_CCITT_SEED    0xFFFFFFFF
 
+guint32 calculate_crc32c(const void *buf, int len, guint32 crc)
+{
+       const guint8 *p = (const guint8 *)buf;
+       crc = CRC32C_SWAP(crc);
+       while (len-- > 0) {
+               CRC32C(crc, *p++);
+       }
+       return CRC32C_SWAP(crc);
+}
+
 guint32
 crc32_ccitt(const guint8 *buf, guint len)
 {
index b497b04290d54fe7b03b7e9b3083a0ee3728f3c1..8de3148e38b0c2bf21043752533e9849073cd5ff 100644 (file)
 extern "C" {
 #endif /* __cplusplus */
 
+#define CRC32C_PRELOAD 0xffffffff
+
+/* 
+ * Byte swap fix contributed by Dave Wysochanski <davidw@netapp.com>.
+ */
+#define CRC32C_SWAP(crc32c_value)                              \
+       (((crc32c_value & 0xff000000) >> 24)    |       \
+        ((crc32c_value & 0x00ff0000) >>  8)    |       \
+        ((crc32c_value & 0x0000ff00) <<  8)    |       \
+        ((crc32c_value & 0x000000ff) << 24))
+
+#define CRC32C(c,d) (c=(c>>8)^crc32c_table[(c^(d))&0xFF])
+
+extern const guint32 crc32c_table[256];
+       
+/** Compute CRC32C checksum of a buffer of data.
+ @param buf The buffer containing the data.
+ @param len The number of bytes to include in the computation.
+ @param crc The preload value for the CRC32C computation.
+ @return The CRC32C checksum. */
+extern guint32 calculate_crc32c(const void *buf, int len, guint32 crc);
+
 extern const guint32 crc32_ccitt_table[256];
 
 /** Compute CRC32 CCITT checksum of a buffer of data.
index 0fcfe6e625c81f78b29ece9650f8ad68b9147b3d..7f710244d97ac65f0eec8d51270f14131c1a67de 100644 (file)
@@ -48,6 +48,7 @@
 #include "packet-scsi.h"
 #include "epan/nstime.h"
 #include <epan/emem.h>
+#include <epan/crc32.h>
 
 /* the absolute values of these constants don't matter as long as
  * latter revisions of the protocol are assigned a larger number */
@@ -510,117 +511,6 @@ static const value_string iscsi_reject_reasons[] = {
     {0, NULL},
 };
 
-/*****************************************************************/
-/*                                                               */
-/* CRC LOOKUP TABLE                                              */
-/* ================                                              */
-/* The following CRC lookup table was generated automagically    */
-/* by the Rocksoft^tm Model CRC Algorithm Table Generation       */
-/* Program V1.0 using the following model parameters:            */
-/*                                                               */
-/*    Width   : 4 bytes.                                         */
-/*    Poly    : 0x1EDC6F41L                                      */
-/*    Reverse : TRUE.                                            */
-/*                                                               */
-/* For more information on the Rocksoft^tm Model CRC Algorithm,  */
-/* see the document titled "A Painless Guide to CRC Error        */
-/* Detection Algorithms" by Ross Williams                        */
-/* (ross@guest.adelaide.edu.au.). This document is likely to be  */
-/* in the FTP archive "ftp.adelaide.edu.au/pub/rocksoft".        */
-/*                                                               */
-/*****************************************************************/
-
-static guint32 crc32Table[256] = {
-    0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L,
-    0xC79A971FL, 0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL,
-    0x8AD958CFL, 0x78B2DBCCL, 0x6BE22838L, 0x9989AB3BL,
-    0x4D43CFD0L, 0xBF284CD3L, 0xAC78BF27L, 0x5E133C24L,
-    0x105EC76FL, 0xE235446CL, 0xF165B798L, 0x030E349BL,
-    0xD7C45070L, 0x25AFD373L, 0x36FF2087L, 0xC494A384L,
-    0x9A879FA0L, 0x68EC1CA3L, 0x7BBCEF57L, 0x89D76C54L,
-    0x5D1D08BFL, 0xAF768BBCL, 0xBC267848L, 0x4E4DFB4BL,
-    0x20BD8EDEL, 0xD2D60DDDL, 0xC186FE29L, 0x33ED7D2AL,
-    0xE72719C1L, 0x154C9AC2L, 0x061C6936L, 0xF477EA35L,
-    0xAA64D611L, 0x580F5512L, 0x4B5FA6E6L, 0xB93425E5L,
-    0x6DFE410EL, 0x9F95C20DL, 0x8CC531F9L, 0x7EAEB2FAL,
-    0x30E349B1L, 0xC288CAB2L, 0xD1D83946L, 0x23B3BA45L,
-    0xF779DEAEL, 0x05125DADL, 0x1642AE59L, 0xE4292D5AL,
-    0xBA3A117EL, 0x4851927DL, 0x5B016189L, 0xA96AE28AL,
-    0x7DA08661L, 0x8FCB0562L, 0x9C9BF696L, 0x6EF07595L,
-    0x417B1DBCL, 0xB3109EBFL, 0xA0406D4BL, 0x522BEE48L,
-    0x86E18AA3L, 0x748A09A0L, 0x67DAFA54L, 0x95B17957L,
-    0xCBA24573L, 0x39C9C670L, 0x2A993584L, 0xD8F2B687L,
-    0x0C38D26CL, 0xFE53516FL, 0xED03A29BL, 0x1F682198L,
-    0x5125DAD3L, 0xA34E59D0L, 0xB01EAA24L, 0x42752927L,
-    0x96BF4DCCL, 0x64D4CECFL, 0x77843D3BL, 0x85EFBE38L,
-    0xDBFC821CL, 0x2997011FL, 0x3AC7F2EBL, 0xC8AC71E8L,
-    0x1C661503L, 0xEE0D9600L, 0xFD5D65F4L, 0x0F36E6F7L,
-    0x61C69362L, 0x93AD1061L, 0x80FDE395L, 0x72966096L,
-    0xA65C047DL, 0x5437877EL, 0x4767748AL, 0xB50CF789L,
-    0xEB1FCBADL, 0x197448AEL, 0x0A24BB5AL, 0xF84F3859L,
-    0x2C855CB2L, 0xDEEEDFB1L, 0xCDBE2C45L, 0x3FD5AF46L,
-    0x7198540DL, 0x83F3D70EL, 0x90A324FAL, 0x62C8A7F9L,
-    0xB602C312L, 0x44694011L, 0x5739B3E5L, 0xA55230E6L,
-    0xFB410CC2L, 0x092A8FC1L, 0x1A7A7C35L, 0xE811FF36L,
-    0x3CDB9BDDL, 0xCEB018DEL, 0xDDE0EB2AL, 0x2F8B6829L,
-    0x82F63B78L, 0x709DB87BL, 0x63CD4B8FL, 0x91A6C88CL,
-    0x456CAC67L, 0xB7072F64L, 0xA457DC90L, 0x563C5F93L,
-    0x082F63B7L, 0xFA44E0B4L, 0xE9141340L, 0x1B7F9043L,
-    0xCFB5F4A8L, 0x3DDE77ABL, 0x2E8E845FL, 0xDCE5075CL,
-    0x92A8FC17L, 0x60C37F14L, 0x73938CE0L, 0x81F80FE3L,
-    0x55326B08L, 0xA759E80BL, 0xB4091BFFL, 0x466298FCL,
-    0x1871A4D8L, 0xEA1A27DBL, 0xF94AD42FL, 0x0B21572CL,
-    0xDFEB33C7L, 0x2D80B0C4L, 0x3ED04330L, 0xCCBBC033L,
-    0xA24BB5A6L, 0x502036A5L, 0x4370C551L, 0xB11B4652L,
-    0x65D122B9L, 0x97BAA1BAL, 0x84EA524EL, 0x7681D14DL,
-    0x2892ED69L, 0xDAF96E6AL, 0xC9A99D9EL, 0x3BC21E9DL,
-    0xEF087A76L, 0x1D63F975L, 0x0E330A81L, 0xFC588982L,
-    0xB21572C9L, 0x407EF1CAL, 0x532E023EL, 0xA145813DL,
-    0x758FE5D6L, 0x87E466D5L, 0x94B49521L, 0x66DF1622L,
-    0x38CC2A06L, 0xCAA7A905L, 0xD9F75AF1L, 0x2B9CD9F2L,
-    0xFF56BD19L, 0x0D3D3E1AL, 0x1E6DCDEEL, 0xEC064EEDL,
-    0xC38D26C4L, 0x31E6A5C7L, 0x22B65633L, 0xD0DDD530L,
-    0x0417B1DBL, 0xF67C32D8L, 0xE52CC12CL, 0x1747422FL,
-    0x49547E0BL, 0xBB3FFD08L, 0xA86F0EFCL, 0x5A048DFFL,
-    0x8ECEE914L, 0x7CA56A17L, 0x6FF599E3L, 0x9D9E1AE0L,
-    0xD3D3E1ABL, 0x21B862A8L, 0x32E8915CL, 0xC083125FL,
-    0x144976B4L, 0xE622F5B7L, 0xF5720643L, 0x07198540L,
-    0x590AB964L, 0xAB613A67L, 0xB831C993L, 0x4A5A4A90L,
-    0x9E902E7BL, 0x6CFBAD78L, 0x7FAB5E8CL, 0x8DC0DD8FL,
-    0xE330A81AL, 0x115B2B19L, 0x020BD8EDL, 0xF0605BEEL,
-    0x24AA3F05L, 0xD6C1BC06L, 0xC5914FF2L, 0x37FACCF1L,
-    0x69E9F0D5L, 0x9B8273D6L, 0x88D28022L, 0x7AB90321L,
-    0xAE7367CAL, 0x5C18E4C9L, 0x4F48173DL, 0xBD23943EL,
-    0xF36E6F75L, 0x0105EC76L, 0x12551F82L, 0xE03E9C81L,
-    0x34F4F86AL, 0xC69F7B69L, 0xD5CF889DL, 0x27A40B9EL,
-    0x79B737BAL, 0x8BDCB4B9L, 0x988C474DL, 0x6AE7C44EL,
-    0xBE2DA0A5L, 0x4C4623A6L, 0x5F16D052L, 0xAD7D5351L
-};
-
-#define CRC32C_PRELOAD 0xffffffff
-
-/* 
- * Byte swap fix contributed by Dave Wysochanski <davidw@netapp.com>
- */
-#define CRC32C_SWAP(crc32c_value) \
-               (((crc32c_value & 0xff000000) >> 24) | \
-               ((crc32c_value & 0x00ff0000) >>  8) | \
-               ((crc32c_value & 0x0000ff00) <<  8) | \
-               ((crc32c_value & 0x000000ff) << 24))
-
-static guint32
-calculateCRC32(const void *buf, int len, guint32 crc) {
-    const guint8 *p = (const guint8 *)buf;
-    crc = CRC32C_SWAP(crc);
-    while(len-- > 0)
-        crc = crc32Table[(crc ^ *p++) & 0xff] ^ (crc >> 8);
-    return CRC32C_SWAP(crc);
-}
-
-
-
-
-
 /* structure and functions to keep track of 
  * COMMAND/DATA_IN/DATA_OUT/RESPONSE matching 
  */
@@ -657,7 +547,7 @@ handleHeaderDigest(iscsi_session_t *iscsi_session, proto_item *ti, tvbuff_t *tvb
     switch(iscsi_session->header_digest){
     case ISCSI_HEADER_DIGEST_CRC32:
        if(available_bytes >= (headerLen + 4)) {
-           guint32 crc = ~calculateCRC32(tvb_get_ptr(tvb, offset, headerLen), headerLen, CRC32C_PRELOAD);
+           guint32 crc = ~calculate_crc32c(tvb_get_ptr(tvb, offset, headerLen), headerLen, CRC32C_PRELOAD);
            guint32 sent = tvb_get_ntohl(tvb, offset + headerLen);
            if(crc == sent) {
                proto_tree_add_uint_format(ti, hf_iscsi_HeaderDigest32, tvb, offset + headerLen, 4, sent, "HeaderDigest: 0x%08x (Good CRC32)", sent);
@@ -676,7 +566,7 @@ handleDataDigest(proto_item *ti, tvbuff_t *tvb, guint offset, int dataLen) {
     if(enableDataDigests) {
        if(dataDigestIsCRC32) {
            if(available_bytes >= (dataLen + 4)) {
-               guint32 crc = ~calculateCRC32(tvb_get_ptr(tvb, offset, dataLen), dataLen, CRC32C_PRELOAD);
+               guint32 crc = ~calculate_crc32c(tvb_get_ptr(tvb, offset, dataLen), dataLen, CRC32C_PRELOAD);
                guint32 sent = tvb_get_ntohl(tvb, offset + dataLen);
                if(crc == sent) {
                    proto_tree_add_uint_format(ti, hf_iscsi_DataDigest32, tvb, offset + dataLen, 4, sent, "DataDigest: 0x%08x (Good CRC32)", sent);
@@ -2360,7 +2250,7 @@ dissect_iscsi(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gboolean chec
        if(digestsActive && (available_bytes>=(guint32) (48+4+ahsLen*4)) && (iscsi_session->header_digest==ISCSI_HEADER_DIGEST_AUTO) ){
             guint32 crc;
                /* we have enough data to test if HeaderDigest is enabled */
-            crc= ~calculateCRC32(tvb_get_ptr(tvb, offset, 48+ahsLen*4), 48+ahsLen*4, CRC32C_PRELOAD);
+            crc= ~calculate_crc32c(tvb_get_ptr(tvb, offset, 48+ahsLen*4), 48+ahsLen*4, CRC32C_PRELOAD);
             if(crc==tvb_get_ntohl(tvb,48+ahsLen*4)){
                 iscsi_session->header_digest=ISCSI_HEADER_DIGEST_CRC32;
             } else {
index 94a2eb2b8990ddf455de1f7c07358e101c557b86..1e33a37442baf457e4412b77ee2f6663c23add7d 100644 (file)
@@ -61,6 +61,7 @@
 #include <epan/emem.h>
 #include <epan/expert.h>
 #include <packet-frame.h>
+#include <epan/crc32.h>
 
 #define LT(x, y) ((gint32)((x) - (y)) < 0)
 
@@ -420,92 +421,12 @@ sctp_adler32(const unsigned char* buf, unsigned int len)
     return (s2 << 16) | s1;
 }
 
-/* The CRC32C code is taken from draft-ietf-tsvwg-sctpcsum-01.txt.
- * That code is copyrighted by D. Otis and has been modified.
- *
- * Polynomial is
- *
- *    x^32 + x^28 + x^27 + x^26 + x^25 + x^23 + x^22 + x^20 + x^19 +
- *    x^18 + x^14 + x^13 + x^11 + x^10 + x^9 + x^8 + x^6 + 1
- *
- * Note that this is not the AUTODIN/HDLC/802.x CRC - it uses a different
- * polynomial.
- */
-
-#define CRC32C(c,d) (c=(c>>8)^crc_c[(c^(d))&0xFF])
-static guint32 crc_c[256] =
-{
-0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L,
-0xC79A971FL, 0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL,
-0x8AD958CFL, 0x78B2DBCCL, 0x6BE22838L, 0x9989AB3BL,
-0x4D43CFD0L, 0xBF284CD3L, 0xAC78BF27L, 0x5E133C24L,
-0x105EC76FL, 0xE235446CL, 0xF165B798L, 0x030E349BL,
-0xD7C45070L, 0x25AFD373L, 0x36FF2087L, 0xC494A384L,
-0x9A879FA0L, 0x68EC1CA3L, 0x7BBCEF57L, 0x89D76C54L,
-0x5D1D08BFL, 0xAF768BBCL, 0xBC267848L, 0x4E4DFB4BL,
-0x20BD8EDEL, 0xD2D60DDDL, 0xC186FE29L, 0x33ED7D2AL,
-0xE72719C1L, 0x154C9AC2L, 0x061C6936L, 0xF477EA35L,
-0xAA64D611L, 0x580F5512L, 0x4B5FA6E6L, 0xB93425E5L,
-0x6DFE410EL, 0x9F95C20DL, 0x8CC531F9L, 0x7EAEB2FAL,
-0x30E349B1L, 0xC288CAB2L, 0xD1D83946L, 0x23B3BA45L,
-0xF779DEAEL, 0x05125DADL, 0x1642AE59L, 0xE4292D5AL,
-0xBA3A117EL, 0x4851927DL, 0x5B016189L, 0xA96AE28AL,
-0x7DA08661L, 0x8FCB0562L, 0x9C9BF696L, 0x6EF07595L,
-0x417B1DBCL, 0xB3109EBFL, 0xA0406D4BL, 0x522BEE48L,
-0x86E18AA3L, 0x748A09A0L, 0x67DAFA54L, 0x95B17957L,
-0xCBA24573L, 0x39C9C670L, 0x2A993584L, 0xD8F2B687L,
-0x0C38D26CL, 0xFE53516FL, 0xED03A29BL, 0x1F682198L,
-0x5125DAD3L, 0xA34E59D0L, 0xB01EAA24L, 0x42752927L,
-0x96BF4DCCL, 0x64D4CECFL, 0x77843D3BL, 0x85EFBE38L,
-0xDBFC821CL, 0x2997011FL, 0x3AC7F2EBL, 0xC8AC71E8L,
-0x1C661503L, 0xEE0D9600L, 0xFD5D65F4L, 0x0F36E6F7L,
-0x61C69362L, 0x93AD1061L, 0x80FDE395L, 0x72966096L,
-0xA65C047DL, 0x5437877EL, 0x4767748AL, 0xB50CF789L,
-0xEB1FCBADL, 0x197448AEL, 0x0A24BB5AL, 0xF84F3859L,
-0x2C855CB2L, 0xDEEEDFB1L, 0xCDBE2C45L, 0x3FD5AF46L,
-0x7198540DL, 0x83F3D70EL, 0x90A324FAL, 0x62C8A7F9L,
-0xB602C312L, 0x44694011L, 0x5739B3E5L, 0xA55230E6L,
-0xFB410CC2L, 0x092A8FC1L, 0x1A7A7C35L, 0xE811FF36L,
-0x3CDB9BDDL, 0xCEB018DEL, 0xDDE0EB2AL, 0x2F8B6829L,
-0x82F63B78L, 0x709DB87BL, 0x63CD4B8FL, 0x91A6C88CL,
-0x456CAC67L, 0xB7072F64L, 0xA457DC90L, 0x563C5F93L,
-0x082F63B7L, 0xFA44E0B4L, 0xE9141340L, 0x1B7F9043L,
-0xCFB5F4A8L, 0x3DDE77ABL, 0x2E8E845FL, 0xDCE5075CL,
-0x92A8FC17L, 0x60C37F14L, 0x73938CE0L, 0x81F80FE3L,
-0x55326B08L, 0xA759E80BL, 0xB4091BFFL, 0x466298FCL,
-0x1871A4D8L, 0xEA1A27DBL, 0xF94AD42FL, 0x0B21572CL,
-0xDFEB33C7L, 0x2D80B0C4L, 0x3ED04330L, 0xCCBBC033L,
-0xA24BB5A6L, 0x502036A5L, 0x4370C551L, 0xB11B4652L,
-0x65D122B9L, 0x97BAA1BAL, 0x84EA524EL, 0x7681D14DL,
-0x2892ED69L, 0xDAF96E6AL, 0xC9A99D9EL, 0x3BC21E9DL,
-0xEF087A76L, 0x1D63F975L, 0x0E330A81L, 0xFC588982L,
-0xB21572C9L, 0x407EF1CAL, 0x532E023EL, 0xA145813DL,
-0x758FE5D6L, 0x87E466D5L, 0x94B49521L, 0x66DF1622L,
-0x38CC2A06L, 0xCAA7A905L, 0xD9F75AF1L, 0x2B9CD9F2L,
-0xFF56BD19L, 0x0D3D3E1AL, 0x1E6DCDEEL, 0xEC064EEDL,
-0xC38D26C4L, 0x31E6A5C7L, 0x22B65633L, 0xD0DDD530L,
-0x0417B1DBL, 0xF67C32D8L, 0xE52CC12CL, 0x1747422FL,
-0x49547E0BL, 0xBB3FFD08L, 0xA86F0EFCL, 0x5A048DFFL,
-0x8ECEE914L, 0x7CA56A17L, 0x6FF599E3L, 0x9D9E1AE0L,
-0xD3D3E1ABL, 0x21B862A8L, 0x32E8915CL, 0xC083125FL,
-0x144976B4L, 0xE622F5B7L, 0xF5720643L, 0x07198540L,
-0x590AB964L, 0xAB613A67L, 0xB831C993L, 0x4A5A4A90L,
-0x9E902E7BL, 0x6CFBAD78L, 0x7FAB5E8CL, 0x8DC0DD8FL,
-0xE330A81AL, 0x115B2B19L, 0x020BD8EDL, 0xF0605BEEL,
-0x24AA3F05L, 0xD6C1BC06L, 0xC5914FF2L, 0x37FACCF1L,
-0x69E9F0D5L, 0x9B8273D6L, 0x88D28022L, 0x7AB90321L,
-0xAE7367CAL, 0x5C18E4C9L, 0x4F48173DL, 0xBD23943EL,
-0xF36E6F75L, 0x0105EC76L, 0x12551F82L, 0xE03E9C81L,
-0x34F4F86AL, 0xC69F7B69L, 0xD5CF889DL, 0x27A40B9EL,
-0x79B737BAL, 0x8BDCB4B9L, 0x988C474DL, 0x6AE7C44EL,
-0xBE2DA0A5L, 0x4C4623A6L, 0x5F16D052L, 0xAD7D5351L,
-};
 
 static guint32
 sctp_crc32c(const unsigned char* buf, unsigned int len)
 {
   unsigned int i;
-  guint32 crc32 = ~0U;
+  guint32 crc32 = CRC32C_PRELOAD;
   guint32 result;
   unsigned char byte0,byte1,byte2,byte3;