#include <rte_memcpy.h>
#include <rte_memzone.h>
#include <rte_launch.h>
-#include <rte_tailq.h>
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#define IP_HDRLEN 0x05 /* default IP header length == five 32-bits words. */
#define IP_VHL_DEF (IP_VERSION | IP_HDRLEN)
+#define GRE_KEY_PRESENT 0x2000
+#define GRE_KEY_LEN 4
+#define GRE_SUPPORTED_FIELDS GRE_KEY_PRESENT
+
/* We cannot use rte_cpu_to_be_16() on a constant in a switch/case */
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
#define _htons(x) ((uint16_t)((((x) & 0x00ffU) << 8) | (((x) & 0xff00U) >> 8)))
uint16_t outer_ethertype;
uint16_t outer_l2_len;
uint16_t outer_l3_len;
+ uint8_t outer_l4_proto;
uint16_t tso_segsz;
};
+/* simplified GRE header */
+struct simple_gre_hdr {
+ uint16_t flags;
+ uint16_t proto;
+};
+
static uint16_t
get_psd_sum(void *l3_hdr, uint16_t ethertype, uint64_t ol_flags)
{
info->outer_ethertype = info->ethertype;
info->outer_l2_len = info->l2_len;
info->outer_l3_len = info->l3_len;
+ info->outer_l4_proto = info->l4_proto;
eth_hdr = (struct ether_hdr *)((char *)udp_hdr +
sizeof(struct udp_hdr) +
info->l2_len += ETHER_VXLAN_HLEN; /* add udp + vxlan */
}
+/* Parse a gre header */
+static void
+parse_gre(struct simple_gre_hdr *gre_hdr, struct testpmd_offload_info *info)
+{
+ struct ether_hdr *eth_hdr;
+ struct ipv4_hdr *ipv4_hdr;
+ struct ipv6_hdr *ipv6_hdr;
+ uint8_t gre_len = 0;
+
+ /* check which fields are supported */
+ if ((gre_hdr->flags & _htons(~GRE_SUPPORTED_FIELDS)) != 0)
+ return;
+
+ gre_len += sizeof(struct simple_gre_hdr);
+
+ if (gre_hdr->flags & _htons(GRE_KEY_PRESENT))
+ gre_len += GRE_KEY_LEN;
+
+ if (gre_hdr->proto == _htons(ETHER_TYPE_IPv4)) {
+ info->is_tunnel = 1;
+ info->outer_ethertype = info->ethertype;
+ info->outer_l2_len = info->l2_len;
+ info->outer_l3_len = info->l3_len;
+ info->outer_l4_proto = info->l4_proto;
+
+ ipv4_hdr = (struct ipv4_hdr *)((char *)gre_hdr + gre_len);
+
+ parse_ipv4(ipv4_hdr, info);
+ info->ethertype = _htons(ETHER_TYPE_IPv4);
+ info->l2_len = 0;
+
+ } else if (gre_hdr->proto == _htons(ETHER_TYPE_IPv6)) {
+ info->is_tunnel = 1;
+ info->outer_ethertype = info->ethertype;
+ info->outer_l2_len = info->l2_len;
+ info->outer_l3_len = info->l3_len;
+ info->outer_l4_proto = info->l4_proto;
+
+ ipv6_hdr = (struct ipv6_hdr *)((char *)gre_hdr + gre_len);
+
+ info->ethertype = _htons(ETHER_TYPE_IPv6);
+ parse_ipv6(ipv6_hdr, info);
+ info->l2_len = 0;
+
+ } else if (gre_hdr->proto == _htons(ETHER_TYPE_TEB)) {
+ info->is_tunnel = 1;
+ info->outer_ethertype = info->ethertype;
+ info->outer_l2_len = info->l2_len;
+ info->outer_l3_len = info->l3_len;
+ info->outer_l4_proto = info->l4_proto;
+
+ eth_hdr = (struct ether_hdr *)((char *)gre_hdr + gre_len);
+
+ parse_ethernet(eth_hdr, info);
+ } else
+ return;
+
+ info->l2_len += gre_len;
+}
+
+
+/* Parse an encapsulated ip or ipv6 header */
+static void
+parse_encap_ip(void *encap_ip, struct testpmd_offload_info *info)
+{
+ struct ipv4_hdr *ipv4_hdr = encap_ip;
+ struct ipv6_hdr *ipv6_hdr = encap_ip;
+ uint8_t ip_version;
+
+ ip_version = (ipv4_hdr->version_ihl & 0xf0) >> 4;
+
+ if (ip_version != 4 && ip_version != 6)
+ return;
+
+ info->is_tunnel = 1;
+ info->outer_ethertype = info->ethertype;
+ info->outer_l2_len = info->l2_len;
+ info->outer_l3_len = info->l3_len;
+
+ if (ip_version == 4) {
+ parse_ipv4(ipv4_hdr, info);
+ info->ethertype = _htons(ETHER_TYPE_IPv4);
+ } else {
+ parse_ipv6(ipv6_hdr, info);
+ info->ethertype = _htons(ETHER_TYPE_IPv6);
+ }
+ info->l2_len = 0;
+}
+
/* modify the IPv4 or IPv4 source address of a packet */
static void
change_ip_addresses(void *l3_hdr, uint16_t ethertype)
* packet */
static uint64_t
process_outer_cksums(void *outer_l3_hdr, struct testpmd_offload_info *info,
-uint16_t testpmd_ol_flags)
+ uint16_t testpmd_ol_flags)
{
struct ipv4_hdr *ipv4_hdr = outer_l3_hdr;
struct ipv6_hdr *ipv6_hdr = outer_l3_hdr;
} else if (testpmd_ol_flags & TESTPMD_TX_OFFLOAD_OUTER_IP_CKSUM)
ol_flags |= PKT_TX_OUTER_IPV6;
+ if (info->outer_l4_proto != IPPROTO_UDP)
+ return ol_flags;
+
/* outer UDP checksum is always done in software as we have no
* hardware supporting it today, and no API for it. */
* Ether / (vlan) / IP|IP6 / UDP|TCP|SCTP .
* Ether / (vlan) / outer IP|IP6 / outer UDP / VxLAN / Ether / IP|IP6 /
* UDP|TCP|SCTP
+ * Ether / (vlan) / outer IP|IP6 / GRE / Ether / IP|IP6 / UDP|TCP|SCTP
+ * Ether / (vlan) / outer IP|IP6 / GRE / IP|IP6 / UDP|TCP|SCTP
+ * Ether / (vlan) / outer IP|IP6 / IP|IP6 / UDP|TCP|SCTP
*
* The testpmd command line for this forward engine sets the flags
* TESTPMD_TX_OFFLOAD_* in ports[tx_port].tx_ol_flags. They control
parse_ethernet(eth_hdr, &info);
l3_hdr = (char *)eth_hdr + info.l2_len;
- /* check if it's a supported tunnel (only vxlan for now) */
- if ((testpmd_ol_flags & TESTPMD_TX_OFFLOAD_PARSE_TUNNEL) &&
- info.l4_proto == IPPROTO_UDP) {
- struct udp_hdr *udp_hdr;
- udp_hdr = (struct udp_hdr *)((char *)l3_hdr + info.l3_len);
- parse_vxlan(udp_hdr, &info, m->ol_flags);
+ /* check if it's a supported tunnel */
+ if (testpmd_ol_flags & TESTPMD_TX_OFFLOAD_PARSE_TUNNEL) {
+ if (info.l4_proto == IPPROTO_UDP) {
+ struct udp_hdr *udp_hdr;
+ udp_hdr = (struct udp_hdr *)((char *)l3_hdr +
+ info.l3_len);
+ parse_vxlan(udp_hdr, &info, m->ol_flags);
+ } else if (info.l4_proto == IPPROTO_GRE) {
+ struct simple_gre_hdr *gre_hdr;
+ gre_hdr = (struct simple_gre_hdr *)
+ ((char *)l3_hdr + info.l3_len);
+ parse_gre(gre_hdr, &info);
+ } else if (info.l4_proto == IPPROTO_IPIP) {
+ void *encap_ip_hdr;
+ encap_ip_hdr = (char *)l3_hdr + info.l3_len;
+ parse_encap_ip(encap_ip_hdr, &info);
+ }
}
/* update l3_hdr and outer_l3_hdr if a tunnel was parsed */
m->outer_l3_len = info.outer_l3_len;
m->l2_len = info.l2_len;
m->l3_len = info.l3_len;
+ m->l4_len = info.l4_len;
}
else {
/* if there is a outer UDP cksum
git.droids-corp.org / dpdk.git / blobdiff