Using SIMD instruction to accelarate encapsulation operation.
Signed-off-by: Jijiang Liu
---
lib/librte_ether/libtunnel/rte_vxlan_opt.c | 251
1 files changed, 251 insertions(+), 0 deletions(-)
create mode 100644 lib/librte_ether/libtunnel/rte_vxlan_opt.c
diff --git a/lib/librte_ether/libtunnel/rte_vxlan_opt.c
b/lib/librte_ether/libtunnel/rte_vxlan_opt.c
new file mode 100644
index 000..e59ed2c
--- /dev/null
+++ b/lib/librte_ether/libtunnel/rte_vxlan_opt.c
@@ -0,0 +1,251 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2015 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
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include
+#include
+#include
+
+#include "vxlan_opt.h"
+
+#ifndef __INTEL_COMPILER
+#pragma GCC diagnostic ignored "-Wcast-qual"
+#endif
+
+#pragma GCC diagnostic ignored "-Wstrict-aliasing"
+
+#define PORT_MIN49152
+#define PORT_MAX65535
+#define PORT_RANGE ((PORT_MAX - PORT_MIN) + 1)
+
+#define DUMMY_FOR_TEST
+#define RTE_DEFAULT_VXLAN_PORT 4789
+
+#define LOOP 4
+#define MAC_LEN6
+#define PREFIX ETHER_HDR_LEN + 4
+#define UDP_PRE_SZ (sizeof(struct udp_hdr) + sizeof(struct vxlan_hdr))
+#define IP_PRE_SZ (UDP_PRE_SZ + sizeof(struct ipv4_hdr))
+#define VXLAN_PKT_HDR_SIZE (IP_PRE_SZ + ETHER_HDR_LEN)
+
+#define VXLAN_SIZE sizeof(struct vxlan_hdr)
+#define INNER_PRE_SZ (14 + 20 + 8 + 8)
+#define DECAP_OFFSET (16 + 8 + 8)
+#define DETECT_OFFSET 12
+
+struct eth_pkt_info {
+ uint8_t l2_len;
+ uint16_t ethertype;
+ uint16_t l3_len;
+ uint16_t l4_proto;
+ uint16_t l4_len;
+};
+
+/* 16Bytes tx meta data */
+struct vxlan_tx_meta {
+ uint32_t sip;
+ uint32_t dip;
+ uint32_t vni;
+ uint16_t sport;
+} __attribute__((__aligned__(16)));
+
+
+/* Parse an IPv4 header to fill l3_len, l4_len, and l4_proto */
+static void
+parse_ipv4(struct ipv4_hdr *ipv4_hdr, struct eth_pkt_info *info)
+{
+ struct tcp_hdr *tcp_hdr;
+
+ info->l3_len = (ipv4_hdr->version_ihl & 0x0f) * 4;
+ info->l4_proto = ipv4_hdr->next_proto_id;
+
+ /* only fill l4_len for TCP, it's useful for TSO */
+ if (info->l4_proto == IPPROTO_TCP) {
+ tcp_hdr = (struct tcp_hdr *)((char *)ipv4_hdr + info->l3_len);
+ info->l4_len = (tcp_hdr->data_off & 0xf0) >> 2;
+ } else
+ info->l4_len = 0;
+}
+
+/* Parse an IPv6 header to fill l3_len, l4_len, and l4_proto */
+static void
+parse_ipv6(struct ipv6_hdr *ipv6_hdr, struct eth_pkt_info *info)
+{
+ struct tcp_hdr *tcp_hdr;
+
+ info->l3_len = sizeof(struct ipv6_hdr);
+ info->l4_proto = ipv6_hdr->proto;
+
+ /* only fill l4_len for TCP, it's useful for TSO */
+ if (info->l4_proto == IPPROTO_TCP) {
+ tcp_hdr = (struct tcp_hdr *)((char *)ipv6_hdr + info->l3_len);
+ info->l4_len = (tcp_hdr->data_off & 0xf0) >> 2;
+ } else
+ info->l4_len = 0;
+}
+
+/*
+ * Parse an ethernet header to fill the ethertype, l2_len, l3_len and
+ * ipproto. This function is able to recognize IPv4/IPv6 with one optional vlan
+ * header. The l4_len argument is only set in case of TCP (useful for TSO).
+ */
+static void
+parse_ethernet(struct ether_hdr *eth_hdr, struct eth_pkt_info *info)
+{
