Imported Upstream version 16.04

Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 285 insertions, 0 deletions

diff --git a/app/test/packet_burst_generator.c b/app/test/packet_burst_generator.c
new file mode 100644
index 00000000..a93c3b59
--- /dev/null
+++ b/app/test/packet_burst_generator.c
@@ -0,0 +1,285 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <rte_byteorder.h>
+#include <rte_mbuf.h>
+
+#include "packet_burst_generator.h"
+
+#define UDP_SRC_PORT 1024
+#define UDP_DST_PORT 1024
+
+
+#define IP_DEFTTL  64   /* from RFC 1340. */
+#define IP_VERSION 0x40
+#define IP_HDRLEN  0x05 /* default IP header length == five 32-bits words. */
+#define IP_VHL_DEF (IP_VERSION | IP_HDRLEN)
+
+static void
+copy_buf_to_pkt_segs(void *buf, unsigned len, struct rte_mbuf *pkt,
+		unsigned offset)
+{
+	struct rte_mbuf *seg;
+	void *seg_buf;
+	unsigned copy_len;
+
+	seg = pkt;
+	while (offset >= seg->data_len) {
+		offset -= seg->data_len;
+		seg = seg->next;
+	}
+	copy_len = seg->data_len - offset;
+	seg_buf = rte_pktmbuf_mtod_offset(seg, char *, offset);
+	while (len > copy_len) {
+		rte_memcpy(seg_buf, buf, (size_t) copy_len);
+		len -= copy_len;
+		buf = ((char *) buf + copy_len);
+		seg = seg->next;
+		seg_buf = rte_pktmbuf_mtod(seg, void *);
+	}
+	rte_memcpy(seg_buf, buf, (size_t) len);
+}
+
+static inline void
+copy_buf_to_pkt(void *buf, unsigned len, struct rte_mbuf *pkt, unsigned offset)
+{
+	if (offset + len <= pkt->data_len) {
+		rte_memcpy(rte_pktmbuf_mtod_offset(pkt, char *, offset), buf,
+			   (size_t) len);
+		return;
+	}
+	copy_buf_to_pkt_segs(buf, len, pkt, offset);
+}
+
+void
+initialize_eth_header(struct ether_hdr *eth_hdr, struct ether_addr *src_mac,
+		struct ether_addr *dst_mac, uint16_t ether_type,
+		uint8_t vlan_enabled, uint16_t van_id)
+{
+	ether_addr_copy(dst_mac, &eth_hdr->d_addr);
+	ether_addr_copy(src_mac, &eth_hdr->s_addr);
+
+	if (vlan_enabled) {
+		struct vlan_hdr *vhdr = (struct vlan_hdr *)((uint8_t *)eth_hdr +
+				sizeof(struct ether_hdr));
+
+		eth_hdr->ether_type = rte_cpu_to_be_16(ETHER_TYPE_VLAN);
+
+		vhdr->eth_proto =  rte_cpu_to_be_16(ether_type);
+		vhdr->vlan_tci = van_id;
+	} else {
+		eth_hdr->ether_type = rte_cpu_to_be_16(ether_type);
+	}
+}
+
+void
+initialize_arp_header(struct arp_hdr *arp_hdr, struct ether_addr *src_mac,
+		struct ether_addr *dst_mac, uint32_t src_ip, uint32_t dst_ip,
+		uint32_t opcode)
+{
+	arp_hdr->arp_hrd = rte_cpu_to_be_16(ARP_HRD_ETHER);
+	arp_hdr->arp_pro = rte_cpu_to_be_16(ETHER_TYPE_IPv4);
+	arp_hdr->arp_hln = ETHER_ADDR_LEN;
+	arp_hdr->arp_pln = sizeof(uint32_t);
+	arp_hdr->arp_op = rte_cpu_to_be_16(opcode);
+	ether_addr_copy(src_mac, &arp_hdr->arp_data.arp_sha);
+	arp_hdr->arp_data.arp_sip = src_ip;
+	ether_addr_copy(dst_mac, &arp_hdr->arp_data.arp_tha);
+	arp_hdr->arp_data.arp_tip = dst_ip;
+}
+
+uint16_t
+initialize_udp_header(struct udp_hdr *udp_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));
+
+	udp_hdr->src_port = rte_cpu_to_be_16(src_port);
+	udp_hdr->dst_port = rte_cpu_to_be_16(dst_port);
+	udp_hdr->dgram_len = rte_cpu_to_be_16(pkt_len);
+	udp_hdr->dgram_cksum = 0; /* No UDP checksum. */
+
+	return pkt_len;
+}
+
+
+uint16_t
+initialize_ipv6_header(struct ipv6_hdr *ip_hdr, uint8_t *src_addr,
+		uint8_t *dst_addr, uint16_t pkt_data_len)
+{
+	ip_hdr->vtc_flow = 0;
+	ip_hdr->payload_len = pkt_data_len;
+	ip_hdr->proto = IPPROTO_UDP;
+	ip_hdr->hop_limits = IP_DEFTTL;
+
+	rte_memcpy(ip_hdr->src_addr, src_addr, sizeof(ip_hdr->src_addr));
+	rte_memcpy(ip_hdr->dst_addr, dst_addr, sizeof(ip_hdr->dst_addr));
+
+	return (uint16_t) (pkt_data_len + sizeof(struct ipv6_hdr));
+}
+
+uint16_t
+initialize_ipv4_header(struct ipv4_hdr *ip_hdr, uint32_t src_addr,
+		uint32_t dst_addr, uint16_t pkt_data_len)
+{
+	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 = IPPROTO_UDP;
+	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
+ * scattered transmit packets composed of a list of mbufs.
+ */
+#define RTE_MAX_SEGS_PER_PKT 255 /**< pkt.nb_segs is a 8-bit unsigned char. */
+
+
+int
+generate_packet_burst(struct rte_mempool *mp, struct rte_mbuf **pkts_burst,
+		struct ether_hdr *eth_hdr, uint8_t vlan_enabled, void *ip_hdr,
+		uint8_t ipv4, struct udp_hdr *udp_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);
+			copy_buf_to_pkt(udp_hdr, sizeof(*udp_hdr), pkt, eth_hdr_size +
+					sizeof(struct ipv4_hdr));
+		} else {
+			copy_buf_to_pkt(ip_hdr, sizeof(struct ipv6_hdr), pkt, eth_hdr_size);
+			copy_buf_to_pkt(udp_hdr, sizeof(*udp_hdr), pkt, eth_hdr_size +
+					sizeof(struct ipv6_hdr));
+		}
+
+		/*
+		 * 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;
+}