19                                     u32* const ofs)) {  in FUNC()  argument
20     u32 first_unread_offset = *ofs;  in FUNC()
27         if (*ofs >= udp_len) return error_packet;  in FUNC()
28         v = udp[(*ofs)++];  in FUNC()
32             if (*ofs >= udp_len) return error_packet;  in FUNC()
33             w = udp[(*ofs)++];  in FUNC()
34             if (*ofs > first_unread_offset) first_unread_offset = *ofs;  in FUNC()
36 …      if (new_ofs >= *ofs) return error_packet;  /* RFC 1035 4.1.4 allows only backward pointers */  in FUNC()
37             *ofs = new_ofs;  in FUNC()
42             if (*ofs + label_size > udp_len) return error_packet;  in FUNC()
49                         u8 w = udp[(*ofs)++];  in FUNC()
54                     *ofs += label_size;  in FUNC()
58                 *ofs += label_size;  in FUNC()
61             if (first_unread_offset > *ofs) *ofs = first_unread_offset;  in FUNC()
95         u32 i, ofs = 12;  /* dns header is 12 bytes */  in FUNC()  local
100             match_result_type m = match_single_name(needles, needle_bound, udp, udp_len, &ofs);  in FUNC()
103             if (ofs + 2 > udp_len) return error_packet;  in FUNC()
104             qtype = (int)read_be16(udp + ofs);  in FUNC()
105             ofs += 4; /* skip be16 qtype & qclass */  in FUNC()
112             match_result_type m = match_single_name(needles, needle_bound, udp, udp_len, &ofs);  in FUNC()
114             ofs += 8; /* skip be16 type, class & be32 ttl */  in FUNC()
115             if (ofs + 2 > udp_len) return error_packet;  in FUNC()
116             ofs += 2 + read_be16(udp + ofs);  /* skip be16 rdata length field, plus length bytes */  in FUNC()