diff options
| author |   Mohsin Kazmi <sykazmi@cisco.com> | 2021-02-10 11:26:24 +0100 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2021-02-15 20:32:56 +0000 |
| commit | 6809538e646bf86c000dc1faba60b0a4157ad898 (patch) | |
| tree | 18a228b96226932381f15e44b4972636de1c7fe1 /src/vnet/devices/virtio/vhost_user_input.c | |
| parent | 99c6dc6a7a36c0be95da9afb3ad8830b24754d4e (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.c | 11 |
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 |