pf_tagname2tag
if ((rule->tag = pf_tagname2tag(rule->tagname)) == 0)
pf_tagname2tag(rule->match_tagname)) == 0)
pf_tagname2tag(newrule->tagname)) == 0)
if ((newrule->match_tag = pf_tagname2tag(
u_int16_t pf_tagname2tag(char *);