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decode the output of u32 matches

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reverse the match offset/mask values into ip header matches.
This commit is contained in:
Stephen Hemminger 2008-02-18 11:35:29 -08:00
parent 5ef8215700
commit 4c9ffc2f8c
1 changed files with 31 additions and 6 deletions
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37
tc/f_u32.c
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@ -797,11 +797,27 @@ static void show_key(FILE *f, const struct tc_u32_key *key)
goto raw;
switch (key->off) {
case 0:
switch (ntohl(key->mask)) {
case 0x0f000000:
fprintf(f, "\n ihl %u", ntohl(key->val) >> 24);
return;
case 0x00ff0000:
fprintf(f, "\n dsfield %#x", ntohl(key->val) >> 16);
return;
}
break;
case 8:
if (ntohl(key->mask) == 0x00ff0000) {
fprintf(f, "\n protocol %u", ntohl(key->val) >> 16);
return;
}
break;
case 12:
case 16: {
int bits = mask2bits(key->mask);
if (bits >= 0) {
fprintf(f, "\n %s %s/%d\n",
fprintf(f, "\n %s %s/%d",
key->off == 12 ? "src" : "dst",
inet_ntop(AF_INET, &key->val,
abuf, sizeof(abuf)),
@ -812,11 +828,20 @@ static void show_key(FILE *f, const struct tc_u32_key *key)
break;
case 20:
case 22:
if (key->mask == ntohl(0xffff)) {
fprintf(f, "\n %s %u\n",
key->off == 20 ? "sport" : "dport",
(unsigned short) ntohl(key->val));
switch (ntohl(key->mask)) {
case 0x0000ffff:
fprintf(f, "\n sport %u",
ntohl(key->val) & 0xffff);
return;
case 0xffff0000:
fprintf(f, "\n dport %u",
ntohl(key->val) >> 16);
return;
case 0xffffffff:
fprintf(f, "\n sport %u, port %u",
ntohl(key->val) & 0xffff,
ntohl(key->val) >> 16);
return;
}
}