return pkt_len;
}
+uint16_t
+initialize_tcp_header(struct tcp_hdr *tcp_hdr, uint16_t src_port,
+ uint16_t dst_port, uint16_t pkt_data_len)
+{
+ uint16_t pkt_len;
+
+ pkt_len = (uint16_t) (pkt_data_len + sizeof(struct tcp_hdr));
+
+ memset(tcp_hdr, 0, sizeof(struct tcp_hdr));
+ tcp_hdr->src_port = rte_cpu_to_be_16(src_port);
+ tcp_hdr->dst_port = rte_cpu_to_be_16(dst_port);
+
+ return pkt_len;
+}
+
+uint16_t
+initialize_sctp_header(struct sctp_hdr *sctp_hdr, uint16_t src_port,
+ uint16_t dst_port, uint16_t pkt_data_len)
+{
+ uint16_t pkt_len;
+
+ pkt_len = (uint16_t) (pkt_data_len + sizeof(struct udp_hdr));
+
+ sctp_hdr->src_port = rte_cpu_to_be_16(src_port);
+ sctp_hdr->dst_port = rte_cpu_to_be_16(dst_port);
+ sctp_hdr->tag = 0;
+ sctp_hdr->cksum = 0; /* No SCTP checksum. */
+
+ return pkt_len;
+}
uint16_t
initialize_ipv6_header(struct ipv6_hdr *ip_hdr, uint8_t *src_addr,
return pkt_len;
}
+uint16_t
+initialize_ipv4_header_proto(struct ipv4_hdr *ip_hdr, uint32_t src_addr,
+ uint32_t dst_addr, uint16_t pkt_data_len, uint8_t proto)
+{
+ uint16_t pkt_len;
+ unaligned_uint16_t *ptr16;
+ uint32_t ip_cksum;
+
+ /*
+ * Initialize IP header.
+ */
+ pkt_len = (uint16_t) (pkt_data_len + sizeof(struct ipv4_hdr));
+
+ ip_hdr->version_ihl = IP_VHL_DEF;
+ ip_hdr->type_of_service = 0;
+ ip_hdr->fragment_offset = 0;
+ ip_hdr->time_to_live = IP_DEFTTL;
+ ip_hdr->next_proto_id = proto;
+ ip_hdr->packet_id = 0;
+ ip_hdr->total_length = rte_cpu_to_be_16(pkt_len);
+ ip_hdr->src_addr = rte_cpu_to_be_32(src_addr);
+ ip_hdr->dst_addr = rte_cpu_to_be_32(dst_addr);
+
+ /*
+ * Compute IP header checksum.
+ */
+ ptr16 = (unaligned_uint16_t *)ip_hdr;
+ ip_cksum = 0;
+ ip_cksum += ptr16[0]; ip_cksum += ptr16[1];
+ ip_cksum += ptr16[2]; ip_cksum += ptr16[3];
+ ip_cksum += ptr16[4];
+ ip_cksum += ptr16[6]; ip_cksum += ptr16[7];
+ ip_cksum += ptr16[8]; ip_cksum += ptr16[9];
+ /*
+ * Reduce 32 bit checksum to 16 bits and complement it.
+ */
+ ip_cksum = ((ip_cksum & 0xFFFF0000) >> 16) +
+ (ip_cksum & 0x0000FFFF);
+ ip_cksum %= 65536;
+ ip_cksum = (~ip_cksum) & 0x0000FFFF;
+ if (ip_cksum == 0)
+ ip_cksum = 0xFFFF;
+ ip_hdr->hdr_checksum = (uint16_t) ip_cksum;
+
+ return pkt_len;
+}
/*
* The maximum number of segments per packet is used when creating
return nb_pkt;
}
+
+int
+generate_packet_burst_proto(struct rte_mempool *mp,
+ struct rte_mbuf **pkts_burst,
+ struct ether_hdr *eth_hdr, uint8_t vlan_enabled, void *ip_hdr,
+ uint8_t ipv4, uint8_t proto, void *proto_hdr,
+ int nb_pkt_per_burst, uint8_t pkt_len, uint8_t nb_pkt_segs)
+{
+ int i, nb_pkt = 0;
+ size_t eth_hdr_size;
+
+ struct rte_mbuf *pkt_seg;
+ struct rte_mbuf *pkt;
+
+ for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) {
+ pkt = rte_pktmbuf_alloc(mp);
+ if (pkt == NULL) {
+nomore_mbuf:
+ if (nb_pkt == 0)
+ return -1;
+ break;
+ }
+
+ pkt->data_len = pkt_len;
+ pkt_seg = pkt;
+ for (i = 1; i < nb_pkt_segs; i++) {
+ pkt_seg->next = rte_pktmbuf_alloc(mp);
+ if (pkt_seg->next == NULL) {
+ pkt->nb_segs = i;
+ rte_pktmbuf_free(pkt);
+ goto nomore_mbuf;
+ }
+ pkt_seg = pkt_seg->next;
+ pkt_seg->data_len = pkt_len;
+ }
+ pkt_seg->next = NULL; /* Last segment of packet. */
+
+ /*
+ * Copy headers in first packet segment(s).
+ */
+ if (vlan_enabled)
+ eth_hdr_size = sizeof(struct ether_hdr) +
+ sizeof(struct vlan_hdr);
+ else
+ eth_hdr_size = sizeof(struct ether_hdr);
+
+ copy_buf_to_pkt(eth_hdr, eth_hdr_size, pkt, 0);
+
+ if (ipv4) {
+ copy_buf_to_pkt(ip_hdr, sizeof(struct ipv4_hdr), pkt,
+ eth_hdr_size);
+ switch (proto) {
+ case IPPROTO_UDP:
+ copy_buf_to_pkt(proto_hdr,
+ sizeof(struct udp_hdr), pkt,
+ eth_hdr_size + sizeof(struct ipv4_hdr));
+ break;
+ case IPPROTO_TCP:
+ copy_buf_to_pkt(proto_hdr,
+ sizeof(struct tcp_hdr), pkt,
+ eth_hdr_size + sizeof(struct ipv4_hdr));
+ break;
+ case IPPROTO_SCTP:
+ copy_buf_to_pkt(proto_hdr,
+ sizeof(struct sctp_hdr), pkt,
+ eth_hdr_size + sizeof(struct ipv4_hdr));
+ break;
+ default:
+ break;
+ }
+ } else {
+ copy_buf_to_pkt(ip_hdr, sizeof(struct ipv6_hdr), pkt,
+ eth_hdr_size);
+ switch (proto) {
+ case IPPROTO_UDP:
+ copy_buf_to_pkt(proto_hdr,
+ sizeof(struct udp_hdr), pkt,
+ eth_hdr_size + sizeof(struct ipv6_hdr));
+ break;
+ case IPPROTO_TCP:
+ copy_buf_to_pkt(proto_hdr,
+ sizeof(struct tcp_hdr), pkt,
+ eth_hdr_size + sizeof(struct ipv6_hdr));
+ break;
+ case IPPROTO_SCTP:
+ copy_buf_to_pkt(proto_hdr,
+ sizeof(struct sctp_hdr), pkt,
+ eth_hdr_size + sizeof(struct ipv6_hdr));
+ break;
+ default:
+ break;
+ }
+ }
+
+ /*
+ * Complete first mbuf of packet and append it to the
+ * burst of packets to be transmitted.
+ */
+ pkt->nb_segs = nb_pkt_segs;
+ pkt->pkt_len = pkt_len;
+ pkt->l2_len = eth_hdr_size;
+
+ if (ipv4) {
+ pkt->vlan_tci = ETHER_TYPE_IPv4;
+ pkt->l3_len = sizeof(struct ipv4_hdr);
+ } else {
+ pkt->vlan_tci = ETHER_TYPE_IPv6;
+ pkt->l3_len = sizeof(struct ipv6_hdr);
+ }
+
+ pkts_burst[nb_pkt] = pkt;
+ }
+
+ return nb_pkt;
+}
Code Review / deb_dpdk.git / blobdiff