/* * netsniff-ng - the packet sniffing beast * Subject to the GPL, version 2. */ #include #include #include "die.h" #include "csum.h" #include "built_in.h" #include "trafgen_l3.h" #include "trafgen_l4.h" #include "trafgen_conf.h" #include "trafgen_proto.h" static struct proto_field udp_fields[] = { { .id = UDP_SPORT, .len = 2, .offset = 0 }, { .id = UDP_DPORT, .len = 2, .offset = 2 }, { .id = UDP_LEN, .len = 2, .offset = 4 }, { .id = UDP_CSUM, .len = 2, .offset = 6 }, }; static void udp_header_init(struct proto_hdr *hdr) { struct proto_hdr *lower; proto_lower_default_add(PROTO_IP4); lower = proto_current_header(); if (lower->id == PROTO_IP4) proto_field_set_default_u8(lower, IP4_PROTO, IPPROTO_UDP); proto_header_fields_add(hdr, udp_fields, array_size(udp_fields)); } static void udp_packet_finish(struct proto_hdr *hdr) { struct proto_hdr *lower = proto_lower_header(hdr); struct packet *pkt = current_packet(); uint16_t total_len; uint16_t csum; total_len = pkt->len - hdr->pkt_offset; proto_field_set_default_be16(hdr, UDP_LEN, total_len); if (proto_field_is_set(hdr, UDP_CSUM)) return; if (!lower || lower->id != PROTO_IP4) return; total_len = proto_field_get_u16(hdr, UDP_LEN); csum = p4_csum((void *) proto_header_ptr(lower), proto_header_ptr(hdr), total_len, IPPROTO_UDP); proto_field_set_be16(hdr, UDP_CSUM, bswap_16(csum)); } static struct proto_hdr udp_hdr = { .id = PROTO_UDP, .layer = PROTO_L4, .header_init = udp_header_init, .packet_finish = udp_packet_finish, }; void protos_l4_init(void) { proto_header_register(&udp_hdr); } 2313d76c3df7f545be5d0899b1aa'>refslog tree commit diff

path: root/sound/soc/intel/skylake/skl-topology.h

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