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-rw-r--r--MAINTAINERS2
-rw-r--r--src/vnet/CMakeLists.txt1
-rw-r--r--src/vnet/devices/virtio/device.c18
-rw-r--r--src/vnet/devices/virtio/vhost_user_output.c6
-rw-r--r--src/vnet/gso/FEATURE.yaml3
-rw-r--r--src/vnet/gso/gso.c1
-rw-r--r--src/vnet/gso/gso.h93
-rw-r--r--src/vnet/gso/hdr_offset_parser.h408
-rw-r--r--src/vnet/gso/node.c224
-rw-r--r--src/vnet/interface_output.h95
-rw-r--r--test/test_gso.py300
11 files changed, 933 insertions, 218 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index cf36e7a6207..83a2f61c9fd 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -237,7 +237,7 @@ VNET GSO
I: gso
M: Andrew Yourtchenko <ayourtch@gmail.com>
M: Mohsin Kazmi <sykazmi@cisco.com>
-F: src/vnet/interface_output.c
+F: src/vnet/gso/
Plugin - MAP
I: map
diff --git a/src/vnet/CMakeLists.txt b/src/vnet/CMakeLists.txt
index 69e041b0d12..bf1dba7f090 100644
--- a/src/vnet/CMakeLists.txt
+++ b/src/vnet/CMakeLists.txt
@@ -1004,6 +1004,7 @@ list(APPEND VNET_SOURCES
)
list(APPEND VNET_HEADERS
+ gso/hdr_offset_parser.h
gso/gso.h
)
diff --git a/src/vnet/devices/virtio/device.c b/src/vnet/devices/virtio/device.c
index 367372fa29a..d110946dede 100644
--- a/src/vnet/devices/virtio/device.c
+++ b/src/vnet/devices/virtio/device.c
@@ -23,7 +23,7 @@
#include <vlib/unix/unix.h>
#include <vnet/vnet.h>
#include <vnet/ethernet/ethernet.h>
-#include <vnet/gso/gso.h>
+#include <vnet/gso/hdr_offset_parser.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/tcp/tcp_packet.h>
@@ -173,7 +173,8 @@ set_checksum_offsets (vlib_buffer_t * b, struct virtio_net_hdr_v1 *hdr)
if (b->flags & VNET_BUFFER_F_IS_IP4)
{
ip4_header_t *ip4;
- gso_header_offset_t gho = vnet_gso_header_offset_parser (b, 0);
+ generic_header_offset_t gho = { 0 };
+ vnet_generic_header_offset_parser (b, &gho);
hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
hdr->csum_start = gho.l4_hdr_offset; // 0x22;
if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
@@ -196,7 +197,8 @@ set_checksum_offsets (vlib_buffer_t * b, struct virtio_net_hdr_v1 *hdr)
}
else if (b->flags & VNET_BUFFER_F_IS_IP6)
{
- gso_header_offset_t gho = vnet_gso_header_offset_parser (b, 1);
+ generic_header_offset_t gho = { 0 };
+ vnet_generic_header_offset_parser (b, &gho);
hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
hdr->csum_start = gho.l4_hdr_offset; // 0x36;
if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
@@ -216,10 +218,11 @@ set_gso_offsets (vlib_buffer_t * b, struct virtio_net_hdr_v1 *hdr)
if (b->flags & VNET_BUFFER_F_IS_IP4)
{
ip4_header_t *ip4;
- gso_header_offset_t gho = vnet_gso_header_offset_parser (b, 0);
+ generic_header_offset_t gho = { 0 };
+ vnet_generic_header_offset_parser (b, &gho);
hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4;
hdr->gso_size = vnet_buffer2 (b)->gso_size;
- hdr->hdr_len = gho.l4_hdr_offset + gho.l4_hdr_sz;
+ hdr->hdr_len = gho.hdr_sz;
hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
hdr->csum_start = gho.l4_hdr_offset; // 0x22;
hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum);
@@ -234,10 +237,11 @@ set_gso_offsets (vlib_buffer_t * b, struct virtio_net_hdr_v1 *hdr)
}
else if (b->flags & VNET_BUFFER_F_IS_IP6)
{
- gso_header_offset_t gho = vnet_gso_header_offset_parser (b, 1);
+ generic_header_offset_t gho = { 0 };
+ vnet_generic_header_offset_parser (b, &gho);
hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6;
hdr->gso_size = vnet_buffer2 (b)->gso_size;
- hdr->hdr_len = gho.l4_hdr_offset + gho.l4_hdr_sz;
+ hdr->hdr_len = gho.hdr_sz;
hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
hdr->csum_start = gho.l4_hdr_offset; // 0x36;
hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum);
diff --git a/src/vnet/devices/virtio/vhost_user_output.c b/src/vnet/devices/virtio/vhost_user_output.c
index e1f42ce1559..b6abe36d972 100644
--- a/src/vnet/devices/virtio/vhost_user_output.c
+++ b/src/vnet/devices/virtio/vhost_user_output.c
@@ -44,7 +44,7 @@
#include <vnet/devices/virtio/vhost_user.h>
#include <vnet/devices/virtio/vhost_user_inline.h>
-#include <vnet/gso/gso.h>
+#include <vnet/gso/hdr_offset_parser.h>
/*
* On the transmit side, we keep processing the buffers from vlib in the while
* loop and prepare the copy order to be executed later. However, the static
@@ -236,8 +236,8 @@ static_always_inline void
vhost_user_handle_tx_offload (vhost_user_intf_t * vui, vlib_buffer_t * b,
virtio_net_hdr_t * hdr)
{
- gso_header_offset_t gho =
- vnet_gso_header_offset_parser (b, b->flags & VNET_BUFFER_F_IS_IP6);
+ generic_header_offset_t gho = { 0 };
+ vnet_generic_header_offset_parser (b, &gho);
if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
{
ip4_header_t *ip4;
diff --git a/src/vnet/gso/FEATURE.yaml b/src/vnet/gso/FEATURE.yaml
index 4edca9c0c90..b3296d6efa6 100644
--- a/src/vnet/gso/FEATURE.yaml
+++ b/src/vnet/gso/FEATURE.yaml
@@ -4,9 +4,10 @@ maintainer: ayourtch@gmail.com sykazmi@cisco.com
features:
- Basic GSO support
- GSO for VLAN tagged packets
+ - GSO for VXLAN tunnel
- Provide inline function to get header offsets
description: "Generic Segmentation Offload"
missing:
- - Tunnels i.e. VXLAN
+ - Thorough Testing, IPIP, GRE, Geneve, IPSec
state: experimental
properties: [API, CLI]
diff --git a/src/vnet/gso/gso.c b/src/vnet/gso/gso.c
index cf90d22696d..c741b17bdd4 100644
--- a/src/vnet/gso/gso.c
+++ b/src/vnet/gso/gso.c
@@ -16,6 +16,7 @@
#include <vlib/vlib.h>
#include <vnet/vnet.h>
#include <vppinfra/error.h>
+#include <vnet/ethernet/ethernet.h>
#include <vnet/feature/feature.h>
#include <vnet/l2/l2_in_out_feat_arc.h>
#include <vnet/gso/gso.h>
diff --git a/src/vnet/gso/gso.h b/src/vnet/gso/gso.h
index 0e46c36f74d..8e174dfd1f6 100644
--- a/src/vnet/gso/gso.h
+++ b/src/vnet/gso/gso.h
@@ -16,25 +16,10 @@
#ifndef included_gso_h
#define included_gso_h
-#include <vnet/ethernet/ethernet.h>
-#include <vnet/ip/ip4_packet.h>
-#include <vnet/ip/ip6_packet.h>
-#include <vnet/udp/udp_packet.h>
#include <vnet/vnet.h>
typedef struct
{
- i16 l2_hdr_offset;
- i16 l3_hdr_offset;
- i16 l4_hdr_offset;
- u16 l4_hdr_sz;
- i16 outer_l2_hdr_offset;
- i16 outer_l3_hdr_offset;
- i16 outer_l4_hdr_offset;
-} gso_header_offset_t;
-
-typedef struct
-{
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
u16 msg_id_base;
@@ -44,84 +29,6 @@ extern gso_main_t gso_main;
int vnet_sw_interface_gso_enable_disable (u32 sw_if_index, u8 enable);
-static_always_inline gso_header_offset_t
-vnet_gso_header_offset_parser (vlib_buffer_t * b0, int is_ip6)
-{
- gso_header_offset_t gho = { 0 };
- u8 l4_proto = 0;
- u8 l4_hdr_sz = 0;
-
- if (PREDICT_TRUE ((b0->flags & (VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
- VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
- VNET_BUFFER_F_L4_HDR_OFFSET_VALID)) ==
- (VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
- VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
- VNET_BUFFER_F_L4_HDR_OFFSET_VALID)))
- {
- gho.l2_hdr_offset = vnet_buffer (b0)->l2_hdr_offset;
- gho.l3_hdr_offset = vnet_buffer (b0)->l3_hdr_offset;
- gho.l4_hdr_offset = vnet_buffer (b0)->l4_hdr_offset;
- gho.l4_hdr_sz = vnet_buffer2 (b0)->gso_l4_hdr_sz;
- return gho;
- }
-
- ethernet_header_t *eh = (ethernet_header_t *) vlib_buffer_get_current (b0);
- u16 ethertype = clib_net_to_host_u16 (eh->type);
- u16 l2hdr_sz = sizeof (ethernet_header_t);
-
- if (ethernet_frame_is_tagged (ethertype))
- {
- ethernet_vlan_header_t *vlan = (ethernet_vlan_header_t *) (eh + 1);
-
- ethertype = clib_net_to_host_u16 (vlan->type);
- l2hdr_sz += sizeof (*vlan);
- if (ethertype == ETHERNET_TYPE_VLAN)
- {
- vlan++;
- ethertype = clib_net_to_host_u16 (vlan->type);
- l2hdr_sz += sizeof (*vlan);
- }
- }
-
- gho.l2_hdr_offset = b0->current_data;
- gho.l3_hdr_offset = l2hdr_sz;
-
- if (PREDICT_TRUE (is_ip6 == 0))
- {
- ip4_header_t *ip4 =
- (ip4_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz);
- gho.l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4);
- l4_proto = ip4->protocol;
- }
- else if (PREDICT_TRUE (is_ip6))
- {
- ip6_header_t *ip6 =
- (ip6_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz);
- /* FIXME IPv6 EH traversal */
- gho.l4_hdr_offset = l2hdr_sz + sizeof (ip6_header_t);
- l4_proto = ip6->protocol;
- }
- if (l4_proto == IP_PROTOCOL_TCP)
- {
- tcp_header_t *tcp = (tcp_header_t *) (vlib_buffer_get_current (b0) +
- gho.l4_hdr_offset);
- l4_hdr_sz = tcp_header_bytes (tcp);
- }
- else if (l4_proto == IP_PROTOCOL_UDP)
- {
- udp_header_t *udp = (udp_header_t *) (vlib_buffer_get_current (b0) +
- gho.l4_hdr_offset);
- l4_hdr_sz = sizeof (*udp);
- }
-
- if (b0->flags & (VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_IS_IP6))
- {
- gho.l4_hdr_sz = l4_hdr_sz;
- }
-
- return gho;
-}
-
#endif /* included_gso_h */
/*
diff --git a/src/vnet/gso/hdr_offset_parser.h b/src/vnet/gso/hdr_offset_parser.h
new file mode 100644
index 00000000000..8f9e0cda984
--- /dev/null
+++ b/src/vnet/gso/hdr_offset_parser.h
@@ -0,0 +1,408 @@
+/*
+ * Copyright (c) 2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef included_hdr_offset_parser_h
+#define included_hdr_offset_parser_h
+
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vnet/udp/udp.h>
+#include <vnet/udp/udp_packet.h>
+#include <vnet/vnet.h>
+#include <vnet/vxlan/vxlan_packet.h>
+
+#define foreach_gho_flag \
+ _( 0, IP4) \
+ _( 1, IP6) \
+ _( 2, TCP) \
+ _( 3, UDP) \
+ _( 4, OUTER_IP4) \
+ _( 5, OUTER_IP6) \
+ _( 6, OUTER_TCP) \
+ _( 7, OUTER_UDP) \
+ _( 8, VXLAN_TUNNEL) \
+ _( 9, GRE_TUNNEL) \
+ _( 10, IPIP_TUNNEL) \
+ _( 11, GENEVE_TUNNEL)
+
+typedef enum gho_flag_t_
+{
+#define _(bit, name) GHO_F_##name = (1 << bit),
+ foreach_gho_flag
+#undef _
+} gho_flag_t;
+
+#define GHO_F_TUNNEL (GHO_F_VXLAN_TUNNEL | \
+ GHO_F_GENEVE_TUNNEL | \
+ GHO_F_IPIP_TUNNEL | \
+ GHO_F_GRE_TUNNEL)
+
+#define GHO_F_OUTER_HDR (GHO_F_OUTER_IP4 | \
+ GHO_F_OUTER_IP6 | \
+ GHO_F_OUTER_TCP | \
+ GHO_F_OUTER_UDP)
+
+#define GHO_F_INNER_HDR (GHO_F_IP4 | \
+ GHO_F_IP6 | \
+ GHO_F_UDP | \
+ GHO_F_TCP)
+
+typedef struct
+{
+ i16 outer_l2_hdr_offset;
+ i16 outer_l3_hdr_offset;
+ i16 outer_l4_hdr_offset;
+ u16 outer_l4_hdr_sz;
+ u16 outer_hdr_sz;
+ i16 l2_hdr_offset;
+ i16 l3_hdr_offset;
+ i16 l4_hdr_offset;
+ u16 l4_hdr_sz;
+ u16 hdr_sz;
+ gho_flag_t gho_flags;
+} generic_header_offset_t;
+
+static_always_inline u8 *
+format_generic_header_offset (u8 * s, va_list * args)
+{
+ generic_header_offset_t *gho = va_arg (*args, generic_header_offset_t *);
+
+ s = format (s, "\n\t");
+ if (gho->gho_flags & GHO_F_TUNNEL)
+ {
+ if (gho->gho_flags & GHO_F_VXLAN_TUNNEL)
+ s = format (s, "vxlan-tunnel ");
+ else if (gho->gho_flags & GHO_F_IPIP_TUNNEL)
+ s = format (s, "ipip-tunnel ");
+ else if (gho->gho_flags & GHO_F_GRE_TUNNEL)
+ s = format (s, "gre-tunnel ");
+ else if (gho->gho_flags & GHO_F_GENEVE_TUNNEL)
+ s = format (s, "geneve-tunnel ");
+
+ if (gho->gho_flags & GHO_F_OUTER_IP4)
+ s = format (s, "outer-ipv4 ");
+ else if (gho->gho_flags & GHO_F_OUTER_IP6)
+ s = format (s, "outer-ipv6 ");
+
+ if (gho->gho_flags & GHO_F_OUTER_UDP)
+ s = format (s, "outer-udp ");
+ else if (gho->gho_flags & GHO_F_OUTER_TCP)
+ s = format (s, "outer-tcp ");
+
+ s = format (s, "outer-hdr-sz %u outer-l2-hdr-offset %d "
+ "outer-l3-hdr-offset %d outer-l4-hdr-offset %d "
+ "outer-l4-hdr-sz %u\n\t",
+ gho->outer_hdr_sz, gho->outer_l2_hdr_offset,
+ gho->outer_l3_hdr_offset, gho->outer_l4_hdr_offset,
+ gho->outer_l4_hdr_sz);
+ }
+
+ if (gho->gho_flags & GHO_F_IP4)
+ s = format (s, "ipv4 ");
+ else if (gho->gho_flags & GHO_F_IP6)
+ s = format (s, "ipv6 ");
+
+ if (gho->gho_flags & GHO_F_TCP)
+ s = format (s, "tcp ");
+ else if (gho->gho_flags & GHO_F_UDP)
+ s = format (s, "udp ");
+
+ s = format (s, "hdr-sz %u l2-hdr-offset %d "
+ "l3-hdr-offset %d l4-hdr-offset %d "
+ "l4-hdr-sz %u",
+ gho->hdr_sz, gho->l2_hdr_offset, gho->l3_hdr_offset,
+ gho->l4_hdr_offset, gho->l4_hdr_sz);
+
+ return s;
+}
+
+static_always_inline void
+vnet_get_inner_header (vlib_buffer_t * b0, generic_header_offset_t * gho)
+{
+ if ((gho->gho_flags & GHO_F_TUNNEL)
+ && (gho->gho_flags & GHO_F_OUTER_HDR)
+ && (b0->current_data == gho->outer_l2_hdr_offset))
+ vlib_buffer_advance (b0, gho->outer_hdr_sz);
+}
+
+static_always_inline void
+vnet_get_outer_header (vlib_buffer_t * b0, generic_header_offset_t * gho)
+{
+ if ((gho->gho_flags & GHO_F_TUNNEL)
+ && (gho->gho_flags & GHO_F_OUTER_HDR)
+ && (b0->current_data == gho->l2_hdr_offset))
+ vlib_buffer_advance (b0, -gho->outer_hdr_sz);
+}
+
+static_always_inline void
+vnet_geneve_inner_header_parser_inline (vlib_buffer_t * b0,
+ generic_header_offset_t * gho)
+{
+ /* not supported yet */
+ if ((gho->gho_flags & GHO_F_GENEVE_TUNNEL) == 0)
+ return;
+
+ ASSERT (0);
+}
+
+static_always_inline void
+vnet_gre_inner_header_parser_inline (vlib_buffer_t * b0,
+ generic_header_offset_t * gho)
+{
+ /* not supported yet */
+ if ((gho->gho_flags & GHO_F_GRE_TUNNEL) == 0)
+ return;
+
+ ASSERT (0);
+}
+
+static_always_inline void
+vnet_ipip_inner_header_parser_inline (vlib_buffer_t * b0,
+ generic_header_offset_t * gho)
+{
+ /* not supported yet */
+ if ((gho->gho_flags & GHO_F_IPIP_TUNNEL) == 0)
+ return;
+
+ ASSERT (0);
+}
+
+static_always_inline void
+vnet_vxlan_inner_header_parser_inline (vlib_buffer_t * b0,
+ generic_header_offset_t * gho)
+{
+ u8 l4_proto = 0;
+ u8 l4_hdr_sz = 0;
+
+ if ((gho->gho_flags & GHO_F_VXLAN_TUNNEL) == 0)
+ return;
+
+ gho->outer_l2_hdr_offset = gho->l2_hdr_offset;
+ gho->outer_l3_hdr_offset = gho->l3_hdr_offset;
+ gho->outer_l4_hdr_offset = gho->l4_hdr_offset;
+ gho->outer_l4_hdr_sz = gho->l4_hdr_sz;
+ gho->outer_hdr_sz = gho->hdr_sz;
+
+ gho->l2_hdr_offset = 0;
+ gho->l3_hdr_offset = 0;
+ gho->l4_hdr_offset = 0;
+ gho->l4_hdr_sz = 0;
+ gho->hdr_sz = 0;
+
+ if (gho->gho_flags & GHO_F_IP4)
+ {
+ gho->gho_flags |= GHO_F_OUTER_IP4;
+ }
+ else if (gho->gho_flags & GHO_F_IP6)
+ {
+ gho->gho_flags |= GHO_F_OUTER_IP6;
+ }
+
+ if (gho->gho_flags & GHO_F_UDP)
+ {
+ gho->gho_flags |= GHO_F_OUTER_UDP;
+ }
+
+ gho->gho_flags &= ~GHO_F_INNER_HDR;
+
+ vnet_get_inner_header (b0, gho);
+
+ gho->l2_hdr_offset = b0->current_data;
+
+ ethernet_header_t *eh = (ethernet_header_t *) vlib_buffer_get_current (b0);
+ u16 ethertype = clib_net_to_host_u16 (eh->type);
+ u16 l2hdr_sz = sizeof (ethernet_header_t);
+
+ if (ethernet_frame_is_tagged (ethertype))
+ {
+ ethernet_vlan_header_t *vlan = (ethernet_vlan_header_t *) (eh + 1);
+
+ ethertype = clib_net_to_host_u16 (vlan->type);
+ l2hdr_sz += sizeof (*vlan);
+ if (ethertype == ETHERNET_TYPE_VLAN)
+ {
+ vlan++;
+ ethertype = clib_net_to_host_u16 (vlan->type);
+ l2hdr_sz += sizeof (*vlan);
+ }
+ }
+
+ gho->l3_hdr_offset = l2hdr_sz;
+
+ if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP4))
+ {
+ ip4_header_t *ip4 =
+ (ip4_header_t *) (vlib_buffer_get_current (b0) + gho->l3_hdr_offset);
+ gho->l4_hdr_offset = gho->l3_hdr_offset + ip4_header_bytes (ip4);
+ l4_proto = ip4->protocol;
+ gho->gho_flags |= GHO_F_IP4;
+ }
+ else if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP6))
+ {
+ ip6_header_t *ip6 =
+ (ip6_header_t *) (vlib_buffer_get_current (b0) + gho->l3_hdr_offset);
+ /* FIXME IPv6 EH traversal */
+ gho->l4_hdr_offset = gho->l3_hdr_offset + sizeof (ip6_header_t);
+ l4_proto = ip6->protocol;
+ gho->gho_flags |= GHO_F_IP6;
+ }
+ if (l4_proto == IP_PROTOCOL_TCP)
+ {
+ tcp_header_t *tcp = (tcp_header_t *) (vlib_buffer_get_current (b0) +
+ gho->l4_hdr_offset);
+ l4_hdr_sz = tcp_header_bytes (tcp);
+
+ gho->gho_flags |= GHO_F_TCP;
+
+ }
+ else if (l4_proto == IP_PROTOCOL_UDP)
+ {
+ udp_header_t *udp = (udp_header_t *) (vlib_buffer_get_current (b0) +
+ gho->l4_hdr_offset);
+ l4_hdr_sz = sizeof (*udp);
+
+ gho->gho_flags |= GHO_F_UDP;
+ }
+
+ gho->l4_hdr_sz = l4_hdr_sz;
+ gho->hdr_sz += gho->l4_hdr_offset + l4_hdr_sz;
+
+ vnet_get_outer_header (b0, gho);
+}
+
+static_always_inline void
+vnet_generic_inner_header_parser_inline (vlib_buffer_t * b0,
+ generic_header_offset_t * gho)
+{
+
+ if (gho->gho_flags & GHO_F_VXLAN_TUNNEL)
+ vnet_vxlan_inner_header_parser_inline (b0, gho);
+ else if (gho->gho_flags & GHO_F_IPIP_TUNNEL)
+ vnet_ipip_inner_header_parser_inline (b0, gho);
+ else if (gho->gho_flags & GHO_F_GRE_TUNNEL)
+ vnet_gre_inner_header_parser_inline (b0, gho);
+ else if (gho->gho_flags & GHO_F_GENEVE_TUNNEL)
+ vnet_geneve_inner_header_parser_inline (b0, gho);
+}
+
+static_always_inline void
+vnet_generic_outer_header_parser_inline (vlib_buffer_t * b0,
+ generic_header_offset_t * gho)
+{
+ u8 l4_proto = 0;
+ u8 l4_hdr_sz = 0;
+
+ ethernet_header_t *eh = (ethernet_header_t *) vlib_buffer_get_current (b0);
+ u16 ethertype = clib_net_to_host_u16 (eh->type);
+ u16 l2hdr_sz = sizeof (ethernet_header_t);
+
+ if (ethernet_frame_is_tagged (ethertype))
+ {
+ ethernet_vlan_header_t *vlan = (ethernet_vlan_header_t *) (eh + 1);
+
+ ethertype = clib_net_to_host_u16 (vlan->type);
+ l2hdr_sz += sizeof (*vlan);
+ if (ethertype == ETHERNET_TYPE_VLAN)
+ {
+ vlan++;
+ ethertype = clib_net_to_host_u16 (vlan->type);
+ l2hdr_sz += sizeof (*vlan);
+ }
+ }
+
+ gho->l2_hdr_offset = b0->current_data;
+ gho->l3_hdr_offset = l2hdr_sz;
+
+ if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP4))
+ {
+ ip4_header_t *ip4 =
+ (ip4_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz);
+ gho->l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4);
+ l4_proto = ip4->protocol;
+ gho->gho_flags |= GHO_F_IP4;
+ }
+ else if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP6))
+ {
+ ip6_header_t *ip6 =
+ (ip6_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz);
+ /* FIXME IPv6 EH traversal */
+ gho->l4_hdr_offset = l2hdr_sz + sizeof (ip6_header_t);
+ l4_proto = ip6->protocol;
+ gho->gho_flags |= GHO_F_IP6;
+ }
+ if (l4_proto == IP_PROTOCOL_TCP)
+ {
+ tcp_header_t *tcp = (tcp_header_t *) (vlib_buffer_get_current (b0) +
+ gho->l4_hdr_offset);
+ l4_hdr_sz = tcp_header_bytes (tcp);
+
+ gho->gho_flags |= GHO_F_TCP;
+ }
+ else if (l4_proto == IP_PROTOCOL_UDP)
+ {
+ udp_header_t *udp = (udp_header_t *) (vlib_buffer_get_current (b0) +
+ gho->l4_hdr_offset);
+ l4_hdr_sz = sizeof (*udp);
+
+ gho->gho_flags |= GHO_F_UDP;
+
+ if (UDP_DST_PORT_vxlan == clib_net_to_host_u16 (udp->dst_port))
+ {
+ gho->gho_flags |= GHO_F_VXLAN_TUNNEL;
+ gho->hdr_sz += sizeof (vxlan_header_t);
+ }
+ else if (UDP_DST_PORT_geneve == clib_net_to_host_u16 (udp->dst_port))
+ {
+ gho->gho_flags |= GHO_F_GENEVE_TUNNEL;
+ }
+ }
+ else if ((l4_proto == IP_PROTOCOL_IP_IN_IP)
+ || (l4_proto == IP_PROTOCOL_IPV6))
+ {
+ l4_hdr_sz = 0;
+ gho->gho_flags |= GHO_F_IPIP_TUNNEL;
+ }
+ else if (l4_proto == IP_PROTOCOL_GRE)
+ {
+ l4_hdr_sz = 0;
+ gho->gho_flags |= GHO_F_GRE_TUNNEL;
+ }
+
+ gho->l4_hdr_sz = l4_hdr_sz;
+ gho->hdr_sz += gho->l4_hdr_offset + l4_hdr_sz;
+}
+
+static_always_inline void
+vnet_generic_header_offset_parser (vlib_buffer_t * b0,
+ generic_header_offset_t * gho)
+{
+ vnet_generic_outer_header_parser_inline (b0, gho);
+
+ if (gho->gho_flags & GHO_F_TUNNEL)
+ {
+ vnet_generic_inner_header_parser_inline (b0, gho);
+ }
+}
+
+#endif /* included_hdr_offset_parser_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/vnet/gso/node.c b/src/vnet/gso/node.c
index b3125fee4c2..663f9cc602d 100644
--- a/src/vnet/gso/node.c
+++ b/src/vnet/gso/node.c
@@ -19,6 +19,7 @@
#include <vnet/ethernet/ethernet.h>
#include <vnet/feature/feature.h>
#include <vnet/gso/gso.h>
+#include <vnet/gso/hdr_offset_parser.h>
#include <vnet/ip/icmp46_packet.h>
#include <vnet/ip/ip4.h>
#include <vnet/ip/ip6.h>
@@ -29,6 +30,7 @@ typedef struct
u32 flags;
u16 gso_size;
u8 gso_l4_hdr_sz;
+ generic_header_offset_t gho;
} gso_trace_t;
static u8 *
@@ -40,32 +42,126 @@ format_gso_trace (u8 * s, va_list * args)
if (t->flags & VNET_BUFFER_F_GSO)
{
- s = format (s, "gso_sz %d gso_l4_hdr_sz %d",
- t->gso_size, t->gso_l4_hdr_sz);
+ s = format (s, "gso_sz %d gso_l4_hdr_sz %d %U",
+ t->gso_size, t->gso_l4_hdr_sz, format_generic_header_offset,
+ &t->gho);
}
else
{
- s = format (s, "non-gso buffer");
+ s =
+ format (s, "non-gso buffer %U", format_generic_header_offset,
+ &t->gho);
}
return s;
}
+static_always_inline void
+tso_segment_vxlan_tunnel_headers_fixup (vlib_main_t * vm, vlib_buffer_t * b,
+ generic_header_offset_t * gho)
+{
+ u8 proto = 0;
+ ip4_header_t *ip4 = 0;
+ ip6_header_t *ip6 = 0;
+ udp_header_t *udp = 0;
+
+ ip4 =
+ (ip4_header_t *) (vlib_buffer_get_current (b) + gho->outer_l3_hdr_offset);
+ ip6 =
+ (ip6_header_t *) (vlib_buffer_get_current (b) + gho->outer_l3_hdr_offset);
+ udp =
+ (udp_header_t *) (vlib_buffer_get_current (b) + gho->outer_l4_hdr_offset);
+
+ if (gho->gho_flags & GHO_F_OUTER_IP4)
+ {
+ proto = ip4->protocol;
+ ip4->length =
+ clib_host_to_net_u16 (b->current_length - gho->outer_l3_hdr_offset);
+ ip4->checksum = ip4_header_checksum (ip4);
+ }
+ else if (gho->gho_flags & GHO_F_OUTER_IP6)
+ {
+ proto = ip6->protocol;
+ ip6->payload_length =
+ clib_host_to_net_u16 (b->current_length - gho->outer_l4_hdr_offset);
+ }
+ if (proto == IP_PROTOCOL_UDP)
+ {
+ int bogus;
+ udp->length =
+ clib_host_to_net_u16 (b->current_length - gho->outer_l4_hdr_offset);
+ udp->checksum = 0;
+ if (gho->gho_flags & GHO_F_OUTER_IP6)
+ {
+ udp->checksum =
+ ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
+ }
+ else if (gho->gho_flags & GHO_F_OUTER_IP4)
+ {
+ udp->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
+ }
+ b->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
+ }
+}
+
+static_always_inline u16
+tso_segment_vxlan_tunnel_fixup (vlib_main_t * vm,
+ vnet_interface_per_thread_data_t * ptd,
+ vlib_buffer_t * sb0,
+ generic_header_offset_t * gho)
+{
+ u16 n_tx_bufs = vec_len (ptd->split_buffers);
+ u16 i = 0, n_tx_bytes = 0;
+
+ while (i < n_tx_bufs)
+ {
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, ptd->split_buffers[i]);
+ vnet_get_outer_header (b0, gho);
+ clib_memcpy_fast (vlib_buffer_get_current (b0),
+ vlib_buffer_get_current (sb0), gho->outer_hdr_sz);
+
+ tso_segment_vxlan_tunnel_headers_fixup (vm, b0, gho);
+ n_tx_bytes += gho->outer_hdr_sz;
+ i++;
+ }
+ return n_tx_bytes;
+}
+
static_always_inline u16
tso_alloc_tx_bufs (vlib_main_t * vm,
vnet_interface_per_thread_data_t * ptd,
vlib_buffer_t * b0, u32 n_bytes_b0, u16 l234_sz,
- u16 gso_size, gso_header_offset_t * gho)
+ u16 gso_size, u16 first_data_size,
+ generic_header_offset_t * gho)
{
- u16 size =
+ u16 n_alloc, size;
+ u16 first_packet_length = l234_sz + first_data_size;
+
+ /*
+ * size is the amount of data per segmented buffer except the 1st
+ * segmented buffer.
+ * l2_hdr_offset is an offset == current_data of vlib_buffer_t.
+ * l234_sz is hdr_sz from l2_hdr_offset.
+ */
+ size =
clib_min (gso_size, vlib_buffer_get_default_data_size (vm) - l234_sz
- gho->l2_hdr_offset);
- /* rounded-up division */
- u16 n_bufs = (n_bytes_b0 - l234_sz + (size - 1)) / size;
- u16 n_alloc;
+ /*
+ * First segmented buffer length is calculated separately.
+ * As it may contain less data than gso_size (when gso_size is
+ * greater than current_length of 1st buffer from GSO chained
+ * buffers) and/or size calculated above.
+ */
+ u16 n_bufs = 1;
+
+ /*
+ * Total packet length minus first packet length including l234 header.
+ * rounded-up division
+ */
+ ASSERT (n_bytes_b0 > first_packet_length);
+ n_bufs += ((n_bytes_b0 - first_packet_length + (size - 1)) / size);
- ASSERT (n_bufs > 0);
vec_validate (ptd->split_buffers, n_bufs - 1);
n_alloc = vlib_buffer_alloc (vm, ptd->split_buffers, n_bufs);
@@ -96,7 +192,7 @@ tso_init_buf_from_template (vlib_main_t * vm, vlib_buffer_t * nb0,
vlib_buffer_t * b0, u16 template_data_sz,
u16 gso_size, u8 ** p_dst_ptr, u16 * p_dst_left,
u32 next_tcp_seq, u32 flags,
- gso_header_offset_t * gho)
+ generic_header_offset_t * gho)
{
tso_init_buf_from_template_base (nb0, b0, flags, template_data_sz);
@@ -112,8 +208,9 @@ tso_init_buf_from_template (vlib_main_t * vm, vlib_buffer_t * nb0,
}
static_always_inline void
-tso_fixup_segmented_buf (vlib_buffer_t * b0, u8 tcp_flags, int is_ip6,
- gso_header_offset_t * gho)
+tso_fixup_segmented_buf (vlib_main_t * vm, vlib_buffer_t * b0, u8 tcp_flags,
+ int is_ip6, generic_header_offset_t * gho,
+ u32 do_csums)
{
ip4_header_t *ip4 =
(ip4_header_t *) (vlib_buffer_get_current (b0) + gho->l3_hdr_offset);
@@ -125,13 +222,37 @@ tso_fixup_segmented_buf (vlib_buffer_t * b0, u8 tcp_flags, int is_ip6,
tcp->flags = tcp_flags;
if (is_ip6)
- ip6->payload_length =
- clib_host_to_net_u16 (b0->current_length -
- (gho->l4_hdr_offset - gho->l2_hdr_offset));
+ {
+ ip6->payload_length =
+ clib_host_to_net_u16 (b0->current_length -
+ (gho->l4_hdr_offset - gho->l2_hdr_offset));
+ if (do_csums && (b0->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM))
+ {
+ int bogus = 0;
+ tcp->checksum = 0;
+ tcp->checksum =
+ ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip6, &bogus);
+ b0->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
+ }
+ }
else
- ip4->length =
- clib_host_to_net_u16 (b0->current_length -
- (gho->l3_hdr_offset - gho->l2_hdr_offset));
+ {
+ ip4->length =
+ clib_host_to_net_u16 (b0->current_length -
+ (gho->l3_hdr_offset - gho->l2_hdr_offset));
+ if (do_csums)
+ {
+ if (b0->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
+ ip4->checksum = ip4_header_checksum (ip4);
+ if (b0->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
+ {
+ tcp->checksum = 0;
+ tcp->checksum = ip4_tcp_udp_compute_checksum (vm, b0, ip4);
+ }
+ b0->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
+ b0->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
+ }
+ }
}
/**
@@ -145,13 +266,13 @@ tso_fixup_segmented_buf (vlib_buffer_t * b0, u8 tcp_flags, int is_ip6,
static_always_inline u32
tso_segment_buffer (vlib_main_t * vm, vnet_interface_per_thread_data_t * ptd,
- u32 sbi0, vlib_buffer_t * sb0, gso_header_offset_t * gho,
- u32 n_bytes_b0, int is_ip6)
+ u32 sbi0, vlib_buffer_t * sb0,
+ generic_header_offset_t * gho, u32 n_bytes_b0, int is_ip6,
+ u32 do_csums)
{
u32 n_tx_bytes = 0;
u16 gso_size = vnet_buffer2 (sb0)->gso_size;
- int l4_hdr_sz = gho->l4_hdr_sz;
u8 save_tcp_flags = 0;
u8 tcp_flags_no_fin_psh = 0;
u32 next_tcp_seq = 0;
@@ -166,12 +287,13 @@ tso_segment_buffer (vlib_main_t * vm, vnet_interface_per_thread_data_t * ptd,
u32 default_bflags =
sb0->flags & ~(VNET_BUFFER_F_GSO | VLIB_BUFFER_NEXT_PRESENT);
- u16 l234_sz = gho->l4_hdr_offset + l4_hdr_sz - gho->l2_hdr_offset;
+ u16 l234_sz = gho->hdr_sz;
int first_data_size = clib_min (gso_size, sb0->current_length - l234_sz);
next_tcp_seq += first_data_size;
if (PREDICT_FALSE
- (!tso_alloc_tx_bufs (vm, ptd, sb0, n_bytes_b0, l234_sz, gso_size, gho)))
+ (!tso_alloc_tx_bufs
+ (vm, ptd, sb0, n_bytes_b0, l234_sz, gso_size, first_data_size, gho)))
return 0;
vlib_buffer_t *b0 = vlib_get_buffer (vm, ptd->split_buffers[0]);
@@ -194,7 +316,8 @@ tso_segment_buffer (vlib_main_t * vm, vnet_interface_per_thread_data_t * ptd,
src_ptr = vlib_buffer_get_current (sb0) + l234_sz + first_data_size;
src_left = sb0->current_length - l234_sz - first_data_size;
- tso_fixup_segmented_buf (b0, tcp_flags_no_fin_psh, is_ip6, gho);
+ tso_fixup_segmented_buf (vm, b0, tcp_flags_no_fin_psh, is_ip6, gho,
+ do_csums);
/* grab a second buffer and prepare the loop */
ASSERT (dbi < vec_len (ptd->split_buffers));
@@ -243,8 +366,8 @@ tso_segment_buffer (vlib_main_t * vm, vnet_interface_per_thread_data_t * ptd,
if (0 == dst_left && total_src_left)
{
n_tx_bytes += cdb0->current_length;
- tso_fixup_segmented_buf (cdb0, tcp_flags_no_fin_psh, is_ip6,
- gho);
+ tso_fixup_segmented_buf (vm, cdb0, tcp_flags_no_fin_psh, is_ip6,
+ gho, do_csums);
ASSERT (dbi < vec_len (ptd->split_buffers));
cdb0 = vlib_get_buffer (vm, ptd->split_buffers[dbi++]);
tso_init_buf_from_template (vm, cdb0, b0, l234_sz,
@@ -253,7 +376,8 @@ tso_segment_buffer (vlib_main_t * vm, vnet_interface_per_thread_data_t * ptd,
}
}
- tso_fixup_segmented_buf (cdb0, save_tcp_flags, is_ip6, gho);
+ tso_fixup_segmented_buf (vm, cdb0, save_tcp_flags, is_ip6, gho,
+ do_csums);
n_tx_bytes += cdb0->current_length;
}
@@ -372,6 +496,7 @@ vnet_gso_node_inline (vlib_main_t * vm,
t0->flags = b[0]->flags & VNET_BUFFER_F_GSO;
t0->gso_size = vnet_buffer2 (b[0])->gso_size;
t0->gso_l4_hdr_sz = vnet_buffer2 (b[0])->gso_l4_hdr_sz;
+ vnet_generic_header_offset_parser (b[0], &t0->gho);
}
if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
{
@@ -379,6 +504,7 @@ vnet_gso_node_inline (vlib_main_t * vm,
t1->flags = b[1]->flags & VNET_BUFFER_F_GSO;
t1->gso_size = vnet_buffer2 (b[1])->gso_size;
t1->gso_l4_hdr_sz = vnet_buffer2 (b[1])->gso_l4_hdr_sz;
+ vnet_generic_header_offset_parser (b[1], &t1->gho);
}
if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
{
@@ -386,6 +512,7 @@ vnet_gso_node_inline (vlib_main_t * vm,
t2->flags = b[2]->flags & VNET_BUFFER_F_GSO;
t2->gso_size = vnet_buffer2 (b[2])->gso_size;
t2->gso_l4_hdr_sz = vnet_buffer2 (b[2])->gso_l4_hdr_sz;
+ vnet_generic_header_offset_parser (b[2], &t2->gho);
}
if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
{
@@ -393,6 +520,7 @@ vnet_gso_node_inline (vlib_main_t * vm,
t3->flags = b[3]->flags & VNET_BUFFER_F_GSO;
t3->gso_size = vnet_buffer2 (b[3])->gso_size;
t3->gso_l4_hdr_sz = vnet_buffer2 (b[3])->gso_l4_hdr_sz;
+ vnet_generic_header_offset_parser (b[3], &t3->gho);
}
from += 4;
@@ -419,6 +547,7 @@ vnet_gso_node_inline (vlib_main_t * vm,
vnet_hw_interface_t *hi0;
u32 next0 = 0;
u32 do_segmentation0 = 0;
+ u32 do_csums = 0;
swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
if (PREDICT_FALSE (hi->sw_if_index != swif0))
@@ -444,6 +573,7 @@ vnet_gso_node_inline (vlib_main_t * vm,
t0->flags = b[0]->flags & VNET_BUFFER_F_GSO;
t0->gso_size = vnet_buffer2 (b[0])->gso_size;
t0->gso_l4_hdr_sz = vnet_buffer2 (b[0])->gso_l4_hdr_sz;
+ vnet_generic_header_offset_parser (b[0], &t0->gho);
}
if (do_segmentation0)
@@ -458,14 +588,39 @@ vnet_gso_node_inline (vlib_main_t * vm,
to_next -= 1;
n_left_to_next += 1;
/* undo the counting. */
- gso_header_offset_t gho;
+ generic_header_offset_t gho = { 0 };
u32 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b[0]);
u32 n_tx_bytes = 0;
- gho = vnet_gso_header_offset_parser (b[0], is_ip6);
+ vnet_generic_header_offset_parser (b[0], &gho);
+
+ if (PREDICT_FALSE (gho.gho_flags & GHO_F_TUNNEL))
+ {
+ if (PREDICT_FALSE
+ ((gho.gho_flags & GHO_F_VXLAN_TUNNEL) == 0))
+ {
+ /* not supported yet */
+ drop_one_buffer_and_count (vm, vnm, node, from - 1,
+ hi->sw_if_index,
+ VNET_INTERFACE_OUTPUT_ERROR_UNHANDLED_GSO_TYPE);
+ b += 1;
+ continue;
+ }
+
+ vnet_get_inner_header (b[0], &gho);
+
+ n_bytes_b0 -= gho.outer_hdr_sz;
+ /*
+ * In case of tunnel encapsulated packet, we will
+ * calculate the checksums for segmented inner packets.
+ */
+ do_csums = 1;
+ is_ip6 = (gho.gho_flags & GHO_F_IP6) != 0;
+ }
+
n_tx_bytes =
tso_segment_buffer (vm, ptd, bi0, b[0], &gho, n_bytes_b0,
- is_ip6);
+ is_ip6, do_csums);
if (PREDICT_FALSE (n_tx_bytes == 0))
{
@@ -476,6 +631,13 @@ vnet_gso_node_inline (vlib_main_t * vm,
continue;
}
+ if (PREDICT_FALSE (gho.gho_flags & GHO_F_VXLAN_TUNNEL))
+ {
+ vnet_get_outer_header (b[0], &gho);
+ n_tx_bytes +=
+ tso_segment_vxlan_tunnel_fixup (vm, ptd, b[0], &gho);
+ }
+
u16 n_tx_bufs = vec_len (ptd->split_buffers);
u32 *from_seg = ptd->split_buffers;
@@ -489,6 +651,7 @@ vnet_gso_node_inline (vlib_main_t * vm,
{
sbi0 = to_next[0] = from_seg[0];
sb0 = vlib_get_buffer (vm, sbi0);
+ ASSERT (sb0->current_length > 0);
to_next += 1;
from_seg += 1;
n_left_to_next -= 1;
@@ -509,6 +672,7 @@ vnet_gso_node_inline (vlib_main_t * vm,
{
sbi0 = to_next[0] = from_seg[0];
sb0 = vlib_get_buffer (vm, sbi0);
+ ASSERT (sb0->current_length > 0);
to_next += 1;
from_seg += 1;
n_left_to_next -= 1;
diff --git a/src/vnet/interface_output.h b/src/vnet/interface_output.h
index 198ca282566..ef7aaa8999e 100644
--- a/src/vnet/interface_output.h
+++ b/src/vnet/interface_output.h
@@ -41,7 +41,44 @@
#define __INTERFACE_INLINES_H__
#include <vnet/vnet.h>
-#include <vnet/gso/gso.h>
+#include <vnet/gso/hdr_offset_parser.h>
+
+static_always_inline void
+vnet_calc_ip4_checksums (vlib_main_t * vm, vlib_buffer_t * b,
+ ip4_header_t * ip4, tcp_header_t * th,
+ udp_header_t * uh)
+{
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
+ ip4->checksum = ip4_header_checksum (ip4);
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
+ {
+ th->checksum = 0;
+ th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
+ }
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
+ {
+ uh->checksum = 0;
+ uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
+ }
+}
+
+static_always_inline void
+vnet_calc_ip6_checksums (vlib_main_t * vm, vlib_buffer_t * b,
+ ip6_header_t * ip6, tcp_header_t * th,
+ udp_header_t * uh)
+{
+ int bogus;
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
+ {
+ th->checksum = 0;
+ th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
+ }
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
+ {
+ uh->checksum = 0;
+ uh->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
+ }
+}
static_always_inline void
vnet_calc_checksums_inline (vlib_main_t * vm, vlib_buffer_t * b,
@@ -52,59 +89,51 @@ vnet_calc_checksums_inline (vlib_main_t * vm, vlib_buffer_t * b,
tcp_header_t *th;
udp_header_t *uh;
- ASSERT (!(is_ip4 && is_ip6));
-
if (with_gso)
{
- gso_header_offset_t gho;
- gho = vnet_gso_header_offset_parser (b, is_ip6);
+ generic_header_offset_t gho = { 0 };
+ vnet_generic_header_offset_parser (b, &gho);
+
+ ASSERT (gho.gho_flags ^ (GHO_F_IP4 | GHO_F_IP6));
+
+ vnet_get_inner_header (b, &gho);
+
ip4 = (ip4_header_t *)
(vlib_buffer_get_current (b) + gho.l3_hdr_offset);
ip6 = (ip6_header_t *)
(vlib_buffer_get_current (b) + gho.l3_hdr_offset);
th = (tcp_header_t *) (vlib_buffer_get_current (b) + gho.l4_hdr_offset);
uh = (udp_header_t *) (vlib_buffer_get_current (b) + gho.l4_hdr_offset);
+
+ if (gho.gho_flags & GHO_F_IP4)
+ {
+ vnet_calc_ip4_checksums (vm, b, ip4, th, uh);
+ }
+ else if (gho.gho_flags & GHO_F_IP6)
+ {
+ vnet_calc_ip6_checksums (vm, b, ip6, th, uh);
+ }
+
+ vnet_get_outer_header (b, &gho);
}
else
{
+ ASSERT (!(is_ip4 && is_ip6));
+
ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
ip6 = (ip6_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
th = (tcp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
uh = (udp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
- }
- if (is_ip4)
- {
- if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
- ip4->checksum = ip4_header_checksum (ip4);
- if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
+ if (is_ip4)
{
- th->checksum = 0;
- th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
+ vnet_calc_ip4_checksums (vm, b, ip4, th, uh);
}
- if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
+ if (is_ip6)
{
- uh->checksum = 0;
- uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
+ vnet_calc_ip6_checksums (vm, b, ip6, th, uh);
}
}
- if (is_ip6)
- {
- int bogus;
- if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
- {
- th->checksum = 0;
- th->checksum =
- ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
- }
- if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
- {
- uh->checksum = 0;
- uh->checksum =
- ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
- }
- }
-
b->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
b->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
b->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
diff --git a/test/test_gso.py b/test/test_gso.py
index 06ae7dd2f48..c5e537c91bd 100644
--- a/test/test_gso.py
+++ b/test/test_gso.py
@@ -12,6 +12,7 @@ import unittest
from scapy.packet import Raw
from scapy.layers.inet6 import IPv6, Ether, IP, UDP, ICMPv6PacketTooBig
+from scapy.layers.inet6 import ipv6nh, IPerror6
from scapy.layers.inet import TCP, ICMP
from scapy.layers.vxlan import VXLAN
from scapy.data import ETH_P_IP, ETH_P_IPV6, ETH_P_ARP
@@ -21,6 +22,7 @@ from vpp_object import VppObject
from vpp_interface import VppInterface
from vpp_ip import DpoProto
from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto
+from vpp_vxlan_tunnel import VppVxlanTunnel
from socket import AF_INET, AF_INET6, inet_pton
from util import reassemble4
@@ -39,6 +41,13 @@ class TestGSO(VppTestCase):
@classmethod
def setUpClass(self):
super(TestGSO, self).setUpClass()
+ res = self.create_pg_interfaces(range(2))
+ res_gso = self.create_pg_interfaces(range(2, 4), 1, 1460)
+ self.create_pg_interfaces(range(4, 5), 1, 8940)
+ self.pg_interfaces.append(res[0])
+ self.pg_interfaces.append(res[1])
+ self.pg_interfaces.append(res_gso[0])
+ self.pg_interfaces.append(res_gso[1])
@classmethod
def tearDownClass(self):
@@ -46,6 +55,24 @@ class TestGSO(VppTestCase):
def setUp(self):
super(TestGSO, self).setUp()
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.config_ip6()
+ i.disable_ipv6_ra()
+ i.resolve_arp()
+ i.resolve_ndp()
+
+ self.single_tunnel_bd = 10
+ self.vxlan = VppVxlanTunnel(self, src=self.pg0.local_ip4,
+ dst=self.pg0.remote_ip4,
+ vni=self.single_tunnel_bd)
+ self.vxlan.add_vpp_config()
+
+ self.vxlan2 = VppVxlanTunnel(self, src=self.pg0.local_ip6,
+ dst=self.pg0.remote_ip6,
+ vni=self.single_tunnel_bd)
+ self.vxlan2.add_vpp_config()
def tearDown(self):
super(TestGSO, self).tearDown()
@@ -60,15 +87,6 @@ class TestGSO(VppTestCase):
#
# Send jumbo frame with gso disabled and DF bit is set
#
- self.create_pg_interfaces(range(2))
- for i in self.pg_interfaces:
- i.admin_up()
- i.config_ip4()
- i.config_ip6()
- i.disable_ipv6_ra()
- i.resolve_arp()
- i.resolve_ndp()
-
p4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4,
flags='DF') /
@@ -89,15 +107,6 @@ class TestGSO(VppTestCase):
# Send jumbo frame with gso enabled and DF bit is set
# input and output interfaces support GSO
#
- self.create_pg_interfaces(range(2, 4), 1, 1460)
- for i in self.pg_interfaces:
- i.admin_up()
- i.config_ip4()
- i.config_ip6()
- i.disable_ipv6_ra()
- i.resolve_arp()
- i.resolve_ndp()
-
p41 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
IP(src=self.pg2.remote_ip4, dst=self.pg3.remote_ip4,
flags='DF') /
@@ -116,33 +125,43 @@ class TestGSO(VppTestCase):
self.assertEqual(rx[TCP].dport, 1234)
#
+ # ipv6
+ #
+ p61 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+ IPv6(src=self.pg2.remote_ip6, dst=self.pg3.remote_ip6) /
+ TCP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 65200))
+
+ rxs = self.send_and_expect(self.pg2, [p61], self.pg3)
+
+ for rx in rxs:
+ self.assertEqual(rx[Ether].src, self.pg3.local_mac)
+ self.assertEqual(rx[Ether].dst, self.pg3.remote_mac)
+ self.assertEqual(rx[IPv6].src, self.pg2.remote_ip6)
+ self.assertEqual(rx[IPv6].dst, self.pg3.remote_ip6)
+ self.assertEqual(rx[IPv6].plen, 65220) # 65200 + 20 (TCP)
+ self.assertEqual(rx[TCP].sport, 1234)
+ self.assertEqual(rx[TCP].dport, 1234)
+
+ #
# Send jumbo frame with gso enabled only on input interface
# and DF bit is set. GSO packet will be chunked into gso_size
# data payload
#
- self.create_pg_interfaces(range(4, 5))
- for i in self.pg_interfaces:
- i.admin_up()
- i.config_ip4()
- i.config_ip6()
- i.disable_ipv6_ra()
- i.resolve_arp()
- i.resolve_ndp()
-
- self.vapi.feature_gso_enable_disable(self.pg4.sw_if_index)
+ self.vapi.feature_gso_enable_disable(self.pg0.sw_if_index)
p42 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
- IP(src=self.pg2.remote_ip4, dst=self.pg4.remote_ip4,
+ IP(src=self.pg2.remote_ip4, dst=self.pg0.remote_ip4,
flags='DF') /
TCP(sport=1234, dport=1234) /
Raw(b'\xa5' * 65200))
- rxs = self.send_and_expect(self.pg2, [p42], self.pg4, 45)
+ rxs = self.send_and_expect(self.pg2, [p42], self.pg0, 45)
size = 0
for rx in rxs:
- self.assertEqual(rx[Ether].src, self.pg4.local_mac)
- self.assertEqual(rx[Ether].dst, self.pg4.remote_mac)
+ self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+ self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
self.assertEqual(rx[IP].src, self.pg2.remote_ip4)
- self.assertEqual(rx[IP].dst, self.pg4.remote_ip4)
+ self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
self.assertEqual(rx[TCP].sport, 1234)
self.assertEqual(rx[TCP].dport, 1234)
@@ -150,10 +169,32 @@ class TestGSO(VppTestCase):
self.assertEqual(size, 65200)
#
+ # ipv6
+ #
+ p62 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+ IPv6(src=self.pg2.remote_ip6, dst=self.pg0.remote_ip6) /
+ TCP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 65200))
+
+ rxs = self.send_and_expect(self.pg2, [p62], self.pg0, 45)
+ size = 0
+ for rx in rxs:
+ self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+ self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+ self.assertEqual(rx[IPv6].src, self.pg2.remote_ip6)
+ self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+ self.assertEqual(rx[TCP].sport, 1234)
+ self.assertEqual(rx[TCP].dport, 1234)
+
+ size = rxs[44][TCP].seq + rxs[44][IPv6].plen - 20
+ self.assertEqual(size, 65200)
+
+ #
# Send jumbo frame with gso enabled only on input interface
# and DF bit is unset. GSO packet will be fragmented.
#
self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [576, 0, 0, 0])
+ self.vapi.feature_gso_enable_disable(self.pg1.sw_if_index)
p43 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
IP(src=self.pg2.remote_ip4, dst=self.pg1.remote_ip4) /
@@ -172,37 +213,196 @@ class TestGSO(VppTestCase):
self.assertEqual(size, 65200)
#
+ # IPv6
+ # Send jumbo frame with gso enabled only on input interface.
+ # ICMPv6 Packet Too Big will be sent back to sender.
+ #
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1280, 0, 0, 0])
+ p63 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+ IPv6(src=self.pg2.remote_ip6, dst=self.pg1.remote_ip6) /
+ TCP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 65200))
+
+ rxs = self.send_and_expect(self.pg2, [p63], self.pg2, 1)
+ for rx in rxs:
+ self.assertEqual(rx[Ether].src, self.pg2.local_mac)
+ self.assertEqual(rx[Ether].dst, self.pg2.remote_mac)
+ self.assertEqual(rx[IPv6].src, self.pg2.local_ip6)
+ self.assertEqual(rx[IPv6].dst, self.pg2.remote_ip6)
+ self.assertEqual(rx[IPv6].plen, 1240) # MTU - IPv6 header
+ self.assertEqual(ipv6nh[rx[IPv6].nh], "ICMPv6")
+ self.assertEqual(rx[ICMPv6PacketTooBig].mtu, 1280)
+ self.assertEqual(rx[IPerror6].src, self.pg2.remote_ip6)
+ self.assertEqual(rx[IPerror6].dst, self.pg1.remote_ip6)
+ self.assertEqual(rx[IPerror6].plen - 20, 65200)
+
+ #
# Send jumbo frame with gso enabled only on input interface with 9K MTU
- # and DF bit is unset. GSO packet will be fragmented. GSO size will be
- # 8960.
+ # and DF bit is unset. GSO packet will be fragmented. MSS is 8960. GSO
+ # size will be min(MSS, 2048 - 14 - 20) vlib_buffer_t size
#
self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [9000, 0, 0, 0])
- self.create_pg_interfaces(range(5, 6), 1, 8960)
- for i in self.pg_interfaces:
- i.admin_up()
- i.config_ip4()
- i.config_ip6()
- i.disable_ipv6_ra()
- i.resolve_arp()
- i.resolve_ndp()
-
- self.vapi.sw_interface_set_mtu(self.pg5.sw_if_index, [9000, 0, 0, 0])
- self.vapi.feature_gso_enable_disable(self.pg1.sw_if_index)
- p44 = (Ether(src=self.pg5.remote_mac, dst=self.pg5.local_mac) /
- IP(src=self.pg5.remote_ip4, dst=self.pg1.remote_ip4) /
+ self.vapi.sw_interface_set_mtu(self.pg4.sw_if_index, [9000, 0, 0, 0])
+ p44 = (Ether(src=self.pg4.remote_mac, dst=self.pg4.local_mac) /
+ IP(src=self.pg4.remote_ip4, dst=self.pg1.remote_ip4) /
TCP(sport=1234, dport=1234) /
Raw(b'\xa5' * 65200))
self.pg1.enable_capture()
- rxs = self.send_and_expect(self.pg5, [p44], self.pg1, 33)
+ rxs = self.send_and_expect(self.pg4, [p44], self.pg1, 33)
size = 0
for rx in rxs:
self.assertEqual(rx[Ether].src, self.pg1.local_mac)
self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
- self.assertEqual(rx[IP].src, self.pg5.remote_ip4)
+ self.assertEqual(rx[IP].src, self.pg4.remote_ip4)
self.assertEqual(rx[IP].dst, self.pg1.remote_ip4)
size = rxs[32][TCP].seq + rxs[32][IP].len - 20 - 20
self.assertEqual(size, 65200)
+ #
+ # IPv6
+ #
+ p64 = (Ether(src=self.pg4.remote_mac, dst=self.pg4.local_mac) /
+ IPv6(src=self.pg4.remote_ip6, dst=self.pg1.remote_ip6) /
+ TCP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 65200))
+
+ self.pg1.enable_capture()
+ rxs = self.send_and_expect(self.pg4, [p64], self.pg1, 34)
+ size = 0
+ for rx in rxs:
+ self.assertEqual(rx[Ether].src, self.pg1.local_mac)
+ self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
+ self.assertEqual(rx[IPv6].src, self.pg4.remote_ip6)
+ self.assertEqual(rx[IPv6].dst, self.pg1.remote_ip6)
+ size = rxs[33][TCP].seq + rxs[33][IPv6].plen - 20
+ self.assertEqual(size, 65200)
+
+ def test_gso_vxlan(self):
+ """ GSO VXLAN test """
+ self.logger.info(self.vapi.cli("sh int addr"))
+ #
+ # Send jumbo frame with gso enabled only on input interface and
+ # create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg2
+ # into BD.
+ #
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.vxlan.sw_if_index, bd_id=self.single_tunnel_bd)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.pg2.sw_if_index, bd_id=self.single_tunnel_bd)
+ self.vapi.feature_gso_enable_disable(self.pg0.sw_if_index)
+
+ #
+ # IPv4/IPv4 - VXLAN
+ #
+ p45 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+ IP(src=self.pg2.remote_ip4, dst="172.16.3.3", flags='DF') /
+ TCP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 65200))
+
+ self.pg0.enable_capture()
+ rxs = self.send_and_expect(self.pg2, [p45], self.pg0, 45)
+ size = 0
+ for rx in rxs:
+ self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+ self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+ self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+ self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+ self.assertEqual(rx[VXLAN].vni, 10)
+ inner = rx[VXLAN].payload
+ self.assertEqual(inner[Ether].src, self.pg2.remote_mac)
+ self.assertEqual(inner[Ether].dst, "02:fe:60:1e:a2:79")
+ self.assertEqual(inner[IP].src, self.pg2.remote_ip4)
+ self.assertEqual(inner[IP].dst, "172.16.3.3")
+ size += inner[IP].len - 20 - 20
+ self.assertEqual(size, 65200)
+
+ #
+ # IPv4/IPv6 - VXLAN
+ #
+ p65 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+ IPv6(src=self.pg2.remote_ip6, dst="fd01:3::3") /
+ TCP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 65200))
+
+ self.pg0.enable_capture()
+ rxs = self.send_and_expect(self.pg2, [p65], self.pg0, 45)
+ size = 0
+ for rx in rxs:
+ self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+ self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+ self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+ self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+ self.assertEqual(rx[VXLAN].vni, 10)
+ inner = rx[VXLAN].payload
+ self.assertEqual(inner[Ether].src, self.pg2.remote_mac)
+ self.assertEqual(inner[Ether].dst, "02:fe:60:1e:a2:79")
+ self.assertEqual(inner[IPv6].src, self.pg2.remote_ip6)
+ self.assertEqual(inner[IPv6].dst, "fd01:3::3")
+ size += inner[IPv6].plen - 20
+ self.assertEqual(size, 65200)
+
+ #
+ # disable ipv4/vxlan
+ #
+ self.vxlan.remove_vpp_config()
+
+ #
+ # enable ipv6/vxlan
+ #
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.vxlan2.sw_if_index,
+ bd_id=self.single_tunnel_bd)
+
+ #
+ # IPv6/IPv4 - VXLAN
+ #
+ p46 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+ IP(src=self.pg2.remote_ip4, dst="172.16.3.3", flags='DF') /
+ TCP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 65200))
+
+ self.pg0.enable_capture()
+ rxs = self.send_and_expect(self.pg2, [p46], self.pg0, 45)
+ size = 0
+ for rx in rxs:
+ self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+ self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+ self.assertEqual(rx[IPv6].src, self.pg0.local_ip6)
+ self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+ self.assertEqual(rx[VXLAN].vni, 10)
+ inner = rx[VXLAN].payload
+ self.assertEqual(inner[Ether].src, self.pg2.remote_mac)
+ self.assertEqual(inner[Ether].dst, "02:fe:60:1e:a2:79")
+ self.assertEqual(inner[IP].src, self.pg2.remote_ip4)
+ self.assertEqual(inner[IP].dst, "172.16.3.3")
+ size += inner[IP].len - 20 - 20
+ self.assertEqual(size, 65200)
+
+ #
+ # IPv6/IPv6 - VXLAN
+ #
+ p66 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+ IPv6(src=self.pg2.remote_ip6, dst="fd01:3::3") /
+ TCP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 65200))
+
+ self.pg0.enable_capture()
+ rxs = self.send_and_expect(self.pg2, [p66], self.pg0, 45)
+ size = 0
+ for rx in rxs:
+ self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+ self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+ self.assertEqual(rx[IPv6].src, self.pg0.local_ip6)
+ self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+ self.assertEqual(rx[VXLAN].vni, 10)
+ inner = rx[VXLAN].payload
+ self.assertEqual(inner[Ether].src, self.pg2.remote_mac)
+ self.assertEqual(inner[Ether].dst, "02:fe:60:1e:a2:79")
+ self.assertEqual(inner[IPv6].src, self.pg2.remote_ip6)
+ self.assertEqual(inner[IPv6].dst, "fd01:3::3")
+ size += inner[IPv6].plen - 20
+ self.assertEqual(size, 65200)
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)