406                                     u32* const ofs)) {  in FUNC()  argument
407     u32 first_unread_offset = *ofs;  in FUNC()
414         if (*ofs >= udp_len) return error_packet;  in FUNC()
415         v = udp[(*ofs)++];  in FUNC()
419             if (*ofs >= udp_len) return error_packet;  in FUNC()
420             w = udp[(*ofs)++];  in FUNC()
421             if (*ofs > first_unread_offset) first_unread_offset = *ofs;  in FUNC()
423 …      if (new_ofs >= *ofs) return error_packet;  /* RFC 1035 4.1.4 allows only backward pointers */  in FUNC()
424             *ofs = new_ofs;  in FUNC()
429             if (*ofs + label_size > udp_len) return error_packet;  in FUNC()
436                         u8 w = udp[(*ofs)++];  in FUNC()
441                     *ofs += label_size;  in FUNC()
445                 *ofs += label_size;  in FUNC()
448             if (first_unread_offset > *ofs) *ofs = first_unread_offset;  in FUNC()
482         u32 i, ofs = 12;  /* dns header is 12 bytes */  in FUNC()  local
487 …   match_result_type m = apf_internal_match_single_name(needles, needle_bound, udp, udp_len, &ofs);  in FUNC()
490             if (ofs + 2 > udp_len) return error_packet;  in FUNC()
491             qtype = (int)read_be16(udp + ofs);  in FUNC()
492             ofs += 4; /* skip be16 qtype & qclass */  in FUNC()
499 …   match_result_type m = apf_internal_match_single_name(needles, needle_bound, udp, udp_len, &ofs);  in FUNC()
501             ofs += 8; /* skip be16 type, class & be32 ttl */  in FUNC()
502             if (ofs + 2 > udp_len) return error_packet;  in FUNC()
503             ofs += 2 + read_be16(udp + ofs);  /* skip be16 rdata length field, plus length bytes */  in FUNC()
667 static u8 read_packet_u8(apf_context* ctx, u32 ofs) {  in read_packet_u8()  argument
668     return ctx->packet[ofs];  in read_packet_u8()