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Carry recorded QOS bits in the outer VXLAN IP header

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Currently for VXLAN IPv4.

Change-Id: Id4b8bc0d9f6ab043810e4d1b9f28e01c27ce0660
Signed-off-by: Igor Mikhailov (imichail) <imichail@cisco.com>
This commit is contained in:
Igor Mikhailov (imichail)
2018-04-24 21:53:00 -07:00
committed by John Lo
parent 074883a223
commit 6636440abf
1 changed files with 35 additions and 0 deletions
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src/vnet/vxlan/encap.c
+35
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@@ -19,6 +19,7 @@
#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/vxlan/vxlan.h>
#include <vnet/qos/qos_types.h>
/* Statistics (not all errors) */
#define foreach_vxlan_encap_error \
@@ -181,6 +182,7 @@ vxlan_encap_inline (vlib_main_t * vm,
u16 payload_l1 = clib_host_to_net_u16 (len1 - l3_len);
ip4_header_t * ip4_0, * ip4_1;
qos_bits_t ip4_0_tos = 0, ip4_1_tos = 0;
ip6_header_t * ip6_0, * ip6_1;
udp_header_t * udp0, * udp1;
u8 * l3_0, * l3_1;
@@ -199,6 +201,17 @@ vxlan_encap_inline (vlib_main_t * vm,
ip4_0->length = clib_host_to_net_u16 (len0);
ip4_1->length = clib_host_to_net_u16 (len1);
if (PREDICT_FALSE (b0->flags & VNET_BUFFER_F_QOS_DATA_VALID))
{
ip4_0_tos = vnet_buffer2 (b0)->qos.bits;
ip4_0->tos = ip4_0_tos;
}
if (PREDICT_FALSE (b1->flags & VNET_BUFFER_F_QOS_DATA_VALID))
{
ip4_1_tos = vnet_buffer2 (b1)->qos.bits;
ip4_1->tos = ip4_1_tos;
}
l3_0 = (u8 *)ip4_0;
l3_1 = (u8 *)ip4_1;
udp0 = &hdr0->udp;
@@ -246,10 +259,20 @@ vxlan_encap_inline (vlib_main_t * vm,
ip_csum_t sum0 = ip4_0->checksum;
sum0 = ip_csum_update (sum0, 0, ip4_0->length, ip4_header_t,
length /* changed member */);
if (PREDICT_FALSE (ip4_0_tos))
{
sum0 = ip_csum_update (sum0, 0, ip4_0_tos, ip4_header_t,
tos /* changed member */);
}
ip4_0->checksum = ip_csum_fold (sum0);
ip_csum_t sum1 = ip4_1->checksum;
sum1 = ip_csum_update (sum1, 0, ip4_1->length, ip4_header_t,
length /* changed member */);
if (PREDICT_FALSE (ip4_1_tos))
{
sum1 = ip_csum_update (sum1, 0, ip4_1_tos, ip4_header_t,
tos /* changed member */);
}
ip4_1->checksum = ip_csum_fold (sum1);
}
/* IPv6 UDP checksum is mandatory */
@@ -329,6 +352,7 @@ vxlan_encap_inline (vlib_main_t * vm,
udp_header_t * udp0;
ip4_header_t * ip4_0;
qos_bits_t ip4_0_tos = 0;
ip6_header_t * ip6_0;
u8 * l3_0;
if (is_ip4)
@@ -341,6 +365,12 @@ vxlan_encap_inline (vlib_main_t * vm,
ip4_0 = &hdr->ip4;
ip4_0->length = clib_host_to_net_u16 (len0);
if (PREDICT_FALSE (b0->flags & VNET_BUFFER_F_QOS_DATA_VALID))
{
ip4_0_tos = vnet_buffer2 (b0)->qos.bits;
ip4_0->tos = ip4_0_tos;
}
l3_0 = (u8*)ip4_0;
udp0 = &hdr->udp;
}
@@ -374,6 +404,11 @@ vxlan_encap_inline (vlib_main_t * vm,
ip_csum_t sum0 = ip4_0->checksum;
sum0 = ip_csum_update (sum0, 0, ip4_0->length, ip4_header_t,
length /* changed member */);
if (PREDICT_FALSE (ip4_0_tos))
{
sum0 = ip_csum_update (sum0, 0, ip4_0_tos, ip4_header_t,
tos /* changed member */);
}
ip4_0->checksum = ip_csum_fold (sum0);
}
/* IPv6 UDP checksum is mandatory */