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authorMohsin Kazmi <sykazmi@cisco.com>2021-06-17 17:20:02 +0000
committerDamjan Marion <dmarion@me.com>2021-09-16 10:42:59 +0000
commit64dd1720e5fd6f0cd9b029a5bc312e7264ac7d24 (patch)
tree38d83830715d9ec702edd58b61c8fecdf26fc96f /src/plugins/dpdk/device/device.c
parent82f9444dbe7fc3719d43dad313df15f686e3b68c (diff)
dpdk: add support for outer udp and ipv4 checksums
Type: improvement Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com> Change-Id: I10141033030342881298d70742fa5bdea402b4c9
Diffstat (limited to 'src/plugins/dpdk/device/device.c')
-rw-r--r--src/plugins/dpdk/device/device.c38
1 files changed, 31 insertions, 7 deletions
diff --git a/src/plugins/dpdk/device/device.c b/src/plugins/dpdk/device/device.c
index 7c083e1dcf4..095036fcb5c 100644
--- a/src/plugins/dpdk/device/device.c
+++ b/src/plugins/dpdk/device/device.c
@@ -221,7 +221,8 @@ dpdk_buffer_tx_offload (dpdk_device_t * xd, vlib_buffer_t * b,
{
int is_ip4 = b->flags & VNET_BUFFER_F_IS_IP4;
u32 tso = b->flags & VNET_BUFFER_F_GSO, max_pkt_len;
- u32 ip_cksum, tcp_cksum, udp_cksum;
+ u32 ip_cksum, tcp_cksum, udp_cksum, outer_hdr_len = 0;
+ u32 outer_ip_cksum, vxlan_tunnel;
u64 ol_flags;
vnet_buffer_oflags_t oflags = 0;
@@ -233,23 +234,46 @@ dpdk_buffer_tx_offload (dpdk_device_t * xd, vlib_buffer_t * b,
ip_cksum = oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM;
tcp_cksum = oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM;
udp_cksum = oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM;
+ outer_ip_cksum = oflags & VNET_BUFFER_OFFLOAD_F_OUTER_IP_CKSUM;
+ vxlan_tunnel = oflags & VNET_BUFFER_OFFLOAD_F_TNL_VXLAN;
- mb->l2_len = vnet_buffer (b)->l3_hdr_offset - b->current_data;
- mb->l3_len = vnet_buffer (b)->l4_hdr_offset -
- vnet_buffer (b)->l3_hdr_offset;
- mb->outer_l3_len = 0;
- mb->outer_l2_len = 0;
ol_flags = is_ip4 ? PKT_TX_IPV4 : PKT_TX_IPV6;
ol_flags |= ip_cksum ? PKT_TX_IP_CKSUM : 0;
ol_flags |= tcp_cksum ? PKT_TX_TCP_CKSUM : 0;
ol_flags |= udp_cksum ? PKT_TX_UDP_CKSUM : 0;
+ if (vxlan_tunnel)
+ {
+ ol_flags |= outer_ip_cksum ? PKT_TX_OUTER_IPV4 | PKT_TX_OUTER_IP_CKSUM :
+ PKT_TX_OUTER_IPV6;
+ ol_flags |= PKT_TX_TUNNEL_VXLAN;
+ mb->l2_len =
+ vnet_buffer (b)->l3_hdr_offset - vnet_buffer2 (b)->outer_l4_hdr_offset;
+ mb->l3_len =
+ vnet_buffer (b)->l4_hdr_offset - vnet_buffer (b)->l3_hdr_offset;
+ mb->outer_l2_len =
+ vnet_buffer2 (b)->outer_l3_hdr_offset - b->current_data;
+ mb->outer_l3_len = vnet_buffer2 (b)->outer_l4_hdr_offset -
+ vnet_buffer2 (b)->outer_l3_hdr_offset;
+ outer_hdr_len = mb->outer_l2_len + mb->outer_l3_len;
+ }
+ else
+ {
+ mb->l2_len =
+ vnet_buffer (b)->l3_hdr_offset - vnet_buffer (b)->l2_hdr_offset;
+ mb->l3_len =
+ vnet_buffer (b)->l4_hdr_offset - vnet_buffer (b)->l3_hdr_offset;
+ mb->outer_l2_len = 0;
+ mb->outer_l3_len = 0;
+ }
+
if (tso)
{
mb->l4_len = vnet_buffer2 (b)->gso_l4_hdr_sz;
mb->tso_segsz = vnet_buffer2 (b)->gso_size;
/* ensure packet is large enough to require tso */
- max_pkt_len = mb->l2_len + mb->l3_len + mb->l4_len + mb->tso_segsz;
+ max_pkt_len =
+ outer_hdr_len + mb->l2_len + mb->l3_len + mb->l4_len + mb->tso_segsz;
if (mb->tso_segsz != 0 && mb->pkt_len > max_pkt_len)
ol_flags |= (tcp_cksum ? PKT_TX_TCP_SEG : PKT_TX_UDP_SEG);
}