This patch introduced VXLAN-GPE support to csum forwarding engine by
recognizing VXLAN-GPE UDP port and parsing tunnel payload according to
next-protocol type.
Signed-off-by: Xueming Li <xuemi...@mellanox.com>
---
app/test-pmd/csumonly.c | 96 +++++++++++++++++++++++++++++++++--
app/test-pmd/parameters.c | 12 ++++-
app/test-pmd/testpmd.h | 2 +
doc/guides/testpmd_app_ug/run_app.rst | 5 ++
4 files changed, 111 insertions(+), 4 deletions(-)
diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c
index 00ec40d58..526d28e74 100644
--- a/app/test-pmd/csumonly.c
+++ b/app/test-pmd/csumonly.c
@@ -56,6 +56,10 @@
#define GRE_SUPPORTED_FIELDS (GRE_CHECKSUM_PRESENT | GRE_KEY_PRESENT |\
GRE_SEQUENCE_PRESENT)
+#define VXLAN_GPE_TYPE_IPv4 1
+#define VXLAN_GPE_TYPE_IPv6 2
+#define VXLAN_GPE_TYPE_ETH 3
+
/* 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)))
@@ -63,6 +67,8 @@
#define _htons(x) (x)
#endif
+uint16_t vxlan_gpe_udp_port = 4790;
+
/* structure that caches offload info for the current packet */
struct testpmd_offload_info {
uint16_t ethertype;
@@ -87,6 +93,14 @@ struct simple_gre_hdr {
uint16_t proto;
} __attribute__((__packed__));
+/* simplified VXLAN-GPE header */
+struct vxlan_gpe_hdr {
+ uint8_t vx_flags; /**< flag (8). */
+ uint8_t reserved[2]; /**< Reserved (16). */
+ uint8_t proto; /**< next-protocol (8). */
+ uint32_t vx_vni; /**< VNI (24) + Reserved (8). */
+} __attribute__((__packed__));
+
static uint16_t
get_udptcp_checksum(void *l3_hdr, void *l4_hdr, uint16_t ethertype)
{
@@ -197,6 +211,70 @@ parse_vxlan(struct udp_hdr *udp_hdr,
info->l2_len += ETHER_VXLAN_HLEN; /* add udp + vxlan */
}
+/* Parse a vxlan-gpe header */
+static void
+parse_vxlan_gpe(struct udp_hdr *udp_hdr,
+ struct testpmd_offload_info *info)
+{
+ struct ether_hdr *eth_hdr;
+ struct ipv4_hdr *ipv4_hdr;
+ struct ipv6_hdr *ipv6_hdr;
+ struct vxlan_gpe_hdr *vxlan_gpe_hdr;
+ uint8_t vxlan_gpe_len = sizeof(*vxlan_gpe_hdr);
+
+ /* check udp destination port, 4790 is the default vxlan-gpe port */
+ if (udp_hdr->dst_port != _htons(vxlan_gpe_udp_port))
+ return;
+
+ vxlan_gpe_hdr = (struct vxlan_gpe_hdr *)((char *)udp_hdr +
+ sizeof(struct udp_hdr));
+
+ if (!vxlan_gpe_hdr->proto || vxlan_gpe_hdr->proto ==
+ VXLAN_GPE_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 *)vxlan_gpe_hdr +
+ vxlan_gpe_len);
+
+ parse_ipv4(ipv4_hdr, info);
+ info->ethertype = _htons(ETHER_TYPE_IPv4);
+ info->l2_len = 0;
+
+ } else if (vxlan_gpe_hdr->proto == VXLAN_GPE_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 *)vxlan_gpe_hdr +
+ vxlan_gpe_len);
+
+ info->ethertype = _htons(ETHER_TYPE_IPv6);
+ parse_ipv6(ipv6_hdr, info);
+ info->l2_len = 0;
+
+ } else if (vxlan_gpe_hdr->proto == VXLAN_GPE_TYPE_ETH) {
+ 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 *)vxlan_gpe_hdr +
+ vxlan_gpe_len);
+
+ parse_ethernet(eth_hdr, info);
+ } else
+ return;
+
+ info->l2_len += ETHER_VXLAN_HLEN;
+}
+
/* Parse a gre header */
static void
parse_gre(struct simple_gre_hdr *gre_hdr, struct testpmd_offload_info *info)
@@ -591,6 +669,10 @@ pkt_copy_split(const struct rte_mbuf *pkt)
* 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 / outer UDP / VXLAN-GPE / Ether / IP|IP6 /
+ * UDP|TCP|SCTP
+ * Ether / (vlan) / outer IP|IP6 / outer UDP / VXLAN-GPE / 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
@@ -694,10 +776,18 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
udp_hdr = (struct udp_hdr *)((char *)l3_hdr +
info.l3_len);
- parse_vxlan(udp_hdr, &info, m->packet_type);
- if (info.is_tunnel)
- tx_ol_flags |= (PKT_TX_TUNNEL_VXLAN |
+ parse_vxlan_gpe(udp_hdr, &info);
+ if (info.is_tunnel) {
+ tx_ol_flags |= (PKT_TX_TUNNEL_UNKNOWN |
PKT_TX_OUTER_UDP);
+ } else {
+ parse_vxlan(udp_hdr, &info,
+ m->packet_type);
+ if (info.is_tunnel)
+ tx_ol_flags |=
+ (PKT_TX_TUNNEL_VXLAN |
+ PKT_TX_OUTER_UDP);
+ }
} else if (info.l4_proto == IPPROTO_GRE) {
struct simple_gre_hdr *gre_hdr;
diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
index 97d22b860..d7489bcec 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -70,7 +70,7 @@ usage(char* progname)
"--rss-ip | --rss-udp | "
"--rxpt= | --rxht= | --rxwt= | --rxfreet= | "
"--txpt= | --txht= | --txwt= | --txfreet= | "
- "--txrst= | --tx-offloads ]\n",
+ "--txrst= | --tx-offloads= | --vxlan-gpe-port= ]\n",
progname);
#ifdef RTE_LIBRTE_CMDLINE
printf(" --interactive: run in interactive mode.\n");
@@ -186,6 +186,7 @@ usage(char* progname)
printf(" --flow-isolate-all: "
"requests flow API isolated mode on all ports at initialization
time.\n");
printf(" --tx-offloads=0xXXXXXXXX: hexadecimal bitmask of TX queue
offloads\n");
+ printf(" --vxlan-gpe-port=N: UPD port of tunnel VXLAN-GPE\n");
}
#ifdef RTE_LIBRTE_CMDLINE
@@ -621,6 +622,7 @@ launch_args_parse(int argc, char** argv)
{ "print-event", 1, 0, 0 },
{ "mask-event", 1, 0, 0 },
{ "tx-offloads", 1, 0, 0 },
+ { "vxlan-gpe-port", 1, 0, 0 },
{ 0, 0, 0, 0 },
};
@@ -1092,6 +1094,14 @@ launch_args_parse(int argc, char** argv)
rte_exit(EXIT_FAILURE,
"tx-offloads must be >= 0\n");
}
+ if (!strcmp(lgopts[opt_idx].name, "vxlan-gpe-port")) {
+ n = atoi(optarg);
+ if (n >= 0)
+ vxlan_gpe_udp_port = (uint16_t)n;
+ else
+ rte_exit(EXIT_FAILURE,
+ "vxlan-gpe-port must be >=
0\n");
+ }
if (!strcmp(lgopts[opt_idx].name, "print-event"))
if (parse_event_printing_config(optarg, 1)) {
rte_exit(EXIT_FAILURE,
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index 153abea05..4cec239fe 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -433,6 +433,8 @@ extern uint32_t retry_enabled;
extern struct fwd_lcore **fwd_lcores;
extern struct fwd_stream **fwd_streams;
+extern uint16_t vxlan_gpe_udp_port; /**< UDP port of tunnel VXLAN-GPE. */
+
extern portid_t nb_peer_eth_addrs; /**< Number of peer ethernet addresses. */
extern struct ether_addr peer_eth_addrs[RTE_MAX_ETHPORTS];
diff --git a/doc/guides/testpmd_app_ug/run_app.rst
b/doc/guides/testpmd_app_ug/run_app.rst
index 1fd53958a..2e8690f41 100644
--- a/doc/guides/testpmd_app_ug/run_app.rst
+++ b/doc/guides/testpmd_app_ug/run_app.rst
@@ -479,3 +479,8 @@ The commandline options are:
Set the hexadecimal bitmask of TX queue offloads.
The default value is 0.
+
+* ``--vxlan-gpe-port=N``
+
+ Set the UDP port number of tunnel VXLAN-GPE to N.
+ The default value is 4790.
--
2.13.3
