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Nokia AS path filter generation improvements

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This commit is contained in:
Michail Litvak
2017-03-01 19:54:52 +02:00
parent 1cc07774cf
commit 7aed731cba
1 changed files with 12 additions and 14 deletions
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bgpq3_printer.c
+12 -14
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@@ -335,8 +335,7 @@ bgpq3_print_nokia_aspath(FILE* f, struct bgpq_expander* b)
if(b->asn32s[b->asnumber/65536] &&
b->asn32s[b->asnumber/65535][(b->asnumber%65536)/8]&
(0x80>>(b->asnumber%8))) {
fprintf(f," entry %u expression \"^%u(%u)*$\"\n", lineNo, b->asnumber,
b->asnumber);
fprintf(f," entry %u expression \"%u+\"\n", lineNo, b->asnumber);
lineNo++;
};
for(k=0;k<65536;k++) {
@@ -346,14 +345,14 @@ bgpq3_print_nokia_aspath(FILE* f, struct bgpq_expander* b)
if(b->asn32s[k][i]&(0x80>>j)) {
if(k*65536+i*8+j==b->asnumber) continue;
if(!nc) {
fprintf(f," entry %u expression \"^%u(.)*(%u",
fprintf(f," entry %u expression \"%u.*[%u",
lineNo,b->asnumber,k*65536+i*8+j);
} else {
fprintf(f,"|%u",k*65536+i*8+j);
fprintf(f," %u",k*65536+i*8+j);
};
nc++;
if(nc==b->aswidth) {
fprintf(f,")$\"\n");
fprintf(f,"]\"\n");
nc=0;
lineNo++;
};
@@ -361,9 +360,9 @@ bgpq3_print_nokia_aspath(FILE* f, struct bgpq_expander* b)
};
};
};
if(nc) fprintf(f,")$\"\n");
if(nc) fprintf(f,"]\"\n");
else if(lineNo==1)
fprintf(f," entry 1 \"!.*\"\n");
fprintf(f," entry 1 \"\"\n");
fprintf(f,"exit\ncommit\n");
return 0;
};
@@ -380,8 +379,7 @@ bgpq3_print_nokia_oaspath(FILE* f, struct bgpq_expander* b)
if(b->asn32s[b->asnumber/65536] &&
b->asn32s[b->asnumber/65536][(b->asnumber%65536)/8]&
(0x80>>(b->asnumber%8))) {
fprintf(f," entry %u expression \"^%u(%u)*$\"\n", lineNo, b->asnumber,
b->asnumber);
fprintf(f," entry %u expression \"%u+\"\n", lineNo, b->asnumber);
lineNo++;
};
for(k=0;k<65536;k++) {
@@ -392,14 +390,14 @@ bgpq3_print_nokia_oaspath(FILE* f, struct bgpq_expander* b)
if(b->asn32s[k][i]&(0x80>>j)) {
if(k*65536+i*8+j==b->asnumber) continue;
if(!nc) {
fprintf(f," entry %u expression \"^(.)*(%u",
fprintf(f," entry %u expression \".*[%u",
lineNo,k*65536+i*8+j);
} else {
fprintf(f,"|%u",k*65536+i*8+j);
fprintf(f," %u",k*65536+i*8+j);
}
nc++;
if(nc==b->aswidth) {
fprintf(f,")$\"\n");
fprintf(f,"]\"\n");
nc=0;
lineNo++;
};
@@ -407,9 +405,9 @@ bgpq3_print_nokia_oaspath(FILE* f, struct bgpq_expander* b)
};
};
};
if(nc) fprintf(f,")$\"\n");
if(nc) fprintf(f,"]\"\n");
else if(lineNo==1)
fprintf(f," entry 1 expression \"!.*\"\n");
fprintf(f," entry 1 expression \"\"\n");
fprintf(f,"exit\ncommit\n");
return 0;
};