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authorMohsin Kazmi <sykazmi@cisco.com>2021-02-10 11:26:24 +0100
committerDamjan Marion <dmarion@me.com>2021-02-15 20:32:56 +0000
commit6809538e646bf86c000dc1faba60b0a4157ad898 (patch)
tree18a228b96226932381f15e44b4972636de1c7fe1 /src/vnet/devices/virtio/vhost_user_input.c
parent99c6dc6a7a36c0be95da9afb3ad8830b24754d4e (diff)
vlib: refactor checksum offload support
Type: refactor This patch refactors the offload flags in vlib_buffer_t. There are two main reasons behind this refactoring. First, offload flags are insufficient to represent outer and inner headers offloads. Second, room for these flags in first cacheline of vlib_buffer_t is also limited. This patch introduces a generic offload flag in first cacheline. And detailed offload flags in 2nd cacheline of the structure for performance optimization. Change-Id: Icc363a142fb9208ec7113ab5bbfc8230181f6004 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/vnet/devices/virtio/vhost_user_input.c')
-rw-r--r--src/vnet/devices/virtio/vhost_user_input.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/src/vnet/devices/virtio/vhost_user_input.c b/src/vnet/devices/virtio/vhost_user_input.c
index 62b59f69ba9..739125bbcfe 100644
--- a/src/vnet/devices/virtio/vhost_user_input.c
+++ b/src/vnet/devices/virtio/vhost_user_input.c
@@ -253,6 +253,7 @@ vhost_user_handle_rx_offload (vlib_buffer_t * b0, u8 * b0_data,
ethernet_header_t *eh = (ethernet_header_t *) b0_data;
u16 ethertype = clib_net_to_host_u16 (eh->type);
u16 l2hdr_sz = sizeof (ethernet_header_t);
+ u32 oflags = 0;
if (ethernet_frame_is_tagged (ethertype))
{
@@ -278,7 +279,8 @@ vhost_user_handle_rx_offload (vlib_buffer_t * b0, u8 * b0_data,
{
ip4_header_t *ip4 = (ip4_header_t *) (b0_data + l2hdr_sz);
l4_proto = ip4->protocol;
- b0->flags |= VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
+ b0->flags |= VNET_BUFFER_F_IS_IP4;
+ oflags |= VNET_BUFFER_OFFLOAD_F_IP_CKSUM;
}
else if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP6))
{
@@ -292,12 +294,12 @@ vhost_user_handle_rx_offload (vlib_buffer_t * b0, u8 * b0_data,
tcp_header_t *tcp = (tcp_header_t *)
(b0_data + vnet_buffer (b0)->l4_hdr_offset);
l4_hdr_sz = tcp_header_bytes (tcp);
- b0->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
+ oflags |= VNET_BUFFER_OFFLOAD_F_TCP_CKSUM;
}
else if (l4_proto == IP_PROTOCOL_UDP)
{
l4_hdr_sz = sizeof (udp_header_t);
- b0->flags |= VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
+ oflags |= VNET_BUFFER_OFFLOAD_F_UDP_CKSUM;
}
if (hdr->gso_type == VIRTIO_NET_HDR_GSO_UDP)
@@ -318,6 +320,9 @@ vhost_user_handle_rx_offload (vlib_buffer_t * b0, u8 * b0_data,
vnet_buffer2 (b0)->gso_l4_hdr_sz = l4_hdr_sz;
b0->flags |= (VNET_BUFFER_F_GSO | VNET_BUFFER_F_IS_IP6);
}
+
+ if (oflags)
+ vnet_buffer_offload_flags_set (b0, oflags);
}
static_always_inline void