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gso: add vxlan tunnel support

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Type: feature

Change-Id: I85f6ec77187a4983c66c5e22fd39fbb2cef82902
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
This commit is contained in:
Mohsin Kazmi
2020-04-17 16:50:56 +00:00
committed by Andrew Yourtchenko
parent 6440b7a602
commit 0b04209eda
11 changed files with 933 additions and 218 deletions
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95
src/vnet/interface_output.h
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@ -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;