Lines Matching refs:ofs

2  * Compares a (Q)NAME starting at udp[*ofs] with the target name.
9  * @param ofs - non-NULL - pointer to the offset of the beginning of the (Q)NAME.
19                                     u32* const ofs)) {
20     u32 first_unread_offset = *ofs;
27         if (*ofs >= udp_len) return error_packet;
28         v = udp[(*ofs)++];
32             if (*ofs >= udp_len) return error_packet;
33             w = udp[(*ofs)++];
34             if (*ofs > first_unread_offset) first_unread_offset = *ofs;
36             if (new_ofs >= *ofs) return error_packet;  /* RFC 1035 4.1.4 allows only backward pointers */
37             *ofs = new_ofs;
42             if (*ofs + label_size > udp_len) return error_packet;
49                         u8 w = udp[(*ofs)++];
54                     *ofs += label_size;
58                 *ofs += label_size;
61             if (first_unread_offset > *ofs) *ofs = first_unread_offset;
95         u32 i, ofs = 12;  /* dns header is 12 bytes */
100             match_result_type m = match_single_name(needles, needle_bound, udp, udp_len, &ofs);
103             if (ofs + 2 > udp_len) return error_packet;
104             qtype = (int)read_be16(udp + ofs);
105             ofs += 4; /* skip be16 qtype & qclass */
112             match_result_type m = match_single_name(needles, needle_bound, udp, udp_len, &ofs);
114             ofs += 8; /* skip be16 type, class & be32 ttl */
115             if (ofs + 2 > udp_len) return error_packet;
116             ofs += 2 + read_be16(udp + ofs);  /* skip be16 rdata length field, plus length bytes */