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authorSteven Luong <sluong@cisco.com>2019-02-25 12:10:53 -0800
committerDamjan Marion <dmarion@me.com>2019-02-26 11:30:42 +0000
commitdd3737284d5021e2e3bd0413b61aab14797e365c (patch)
tree4c538ed6e44118102b9f2af9a2de5697e4d2a3d9 /src/plugins/vmxnet3/input.c
parent5ecd5a5d159332a964dd840fcdabe5f8d3111b0e (diff)
vmxnet3: lro/tso and rx checksum
Add lro/tso and rx checksum support. lro/tso is configured via startup.conf vmxnet3 { lro } It is disable by default due to not all versions of ESXi supports it. Change-Id: Icf224ff528884ecd9e655b4fcf4481194e8c5a63 Signed-off-by: Steven Luong <sluong@cisco.com>
Diffstat (limited to 'src/plugins/vmxnet3/input.c')
-rw-r--r--src/plugins/vmxnet3/input.c160
1 files changed, 136 insertions, 24 deletions
diff --git a/src/plugins/vmxnet3/input.c b/src/plugins/vmxnet3/input.c
index dffad6c7d47..87aa29cb49a 100644
--- a/src/plugins/vmxnet3/input.c
+++ b/src/plugins/vmxnet3/input.c
@@ -20,6 +20,9 @@
#include <vlib/pci/pci.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/devices/devices.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/udp/udp_packet.h>
#include <vmxnet3/vmxnet3.h>
@@ -71,6 +74,126 @@ vmxnet3_rx_comp_ring_advance_next (vmxnet3_rxq_t * rxq)
}
}
+static_always_inline void
+vmxnet3_handle_offload (vmxnet3_rx_comp * rx_comp, vlib_buffer_t * hb,
+ u16 * next, u16 gso_size)
+{
+ u8 l4_hdr_sz = 0;
+
+ if (gso_size)
+ {
+ if (rx_comp->flags & VMXNET3_RXCF_TCP)
+ {
+ tcp_header_t *tcp =
+ (tcp_header_t *) (hb->data + vnet_buffer (hb)->l4_hdr_offset);
+ l4_hdr_sz = tcp_header_bytes (tcp);
+ }
+ else if (rx_comp->flags & VMXNET3_RXCF_UDP)
+ {
+ udp_header_t *udp =
+ (udp_header_t *) (hb->data + vnet_buffer (hb)->l4_hdr_offset);
+ l4_hdr_sz = sizeof (*udp);
+ }
+ }
+
+ if (rx_comp->flags & VMXNET3_RXCF_IP4)
+ {
+ ip4_header_t *ip4 = (ip4_header_t *) (hb->data +
+ sizeof (ethernet_header_t));
+
+ vnet_buffer (hb)->l2_hdr_offset = 0;
+ vnet_buffer (hb)->l3_hdr_offset = sizeof (ethernet_header_t);
+ vnet_buffer (hb)->l4_hdr_offset = sizeof (ethernet_header_t) +
+ ip4_header_bytes (ip4);
+ hb->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
+ VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
+ VNET_BUFFER_F_L4_HDR_OFFSET_VALID | VNET_BUFFER_F_IS_IP4;
+ next[0] = VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT;
+
+ /* checksum offload */
+ if (!(rx_comp->index & VMXNET3_RXCI_CNC))
+ {
+ if (!(rx_comp->flags & VMXNET3_RXCF_IPC))
+ {
+ hb->flags |= VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
+ ip4->checksum = 0;
+ }
+ if (!(rx_comp->flags & VMXNET3_RXCF_TUC))
+ {
+ if (rx_comp->flags & VMXNET3_RXCF_TCP)
+ {
+ tcp_header_t *tcp =
+ (tcp_header_t *) (hb->data +
+ vnet_buffer (hb)->l4_hdr_offset);
+ hb->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
+ tcp->checksum = 0;
+ }
+ else if (rx_comp->flags & VMXNET3_RXCF_UDP)
+ {
+ udp_header_t *udp =
+ (udp_header_t *) (hb->data +
+ vnet_buffer (hb)->l4_hdr_offset);
+ hb->flags |= VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
+ udp->checksum = 0;
+ }
+ }
+ }
+
+ if (gso_size)
+ {
+ vnet_buffer2 (hb)->gso_size = gso_size;
+ vnet_buffer2 (hb)->gso_l4_hdr_sz = l4_hdr_sz;
+ hb->flags |= VNET_BUFFER_F_GSO;
+ }
+ vlib_buffer_advance (hb, device_input_next_node_advance[next[0]]);
+ }
+ else if (rx_comp->flags & VMXNET3_RXCF_IP6)
+ {
+ vnet_buffer (hb)->l2_hdr_offset = 0;
+ vnet_buffer (hb)->l3_hdr_offset = sizeof (ethernet_header_t);
+ vnet_buffer (hb)->l4_hdr_offset = sizeof (ethernet_header_t) +
+ sizeof (ip6_header_t);
+ hb->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
+ VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
+ VNET_BUFFER_F_L4_HDR_OFFSET_VALID | VNET_BUFFER_F_IS_IP6;
+ next[0] = VNET_DEVICE_INPUT_NEXT_IP6_INPUT;
+
+ /* checksum offload */
+ if (!(rx_comp->index & VMXNET3_RXCI_CNC))
+ {
+ if (!(rx_comp->flags & VMXNET3_RXCF_TUC))
+ {
+ if (rx_comp->flags & VMXNET3_RXCF_TCP)
+ {
+ tcp_header_t *tcp =
+ (tcp_header_t *) (hb->data +
+ vnet_buffer (hb)->l4_hdr_offset);
+ hb->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
+ tcp->checksum = 0;
+ }
+ else if (rx_comp->flags & VMXNET3_RXCF_UDP)
+ {
+ udp_header_t *udp =
+ (udp_header_t *) (hb->data +
+ vnet_buffer (hb)->l4_hdr_offset);
+ hb->flags |= VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
+ udp->checksum = 0;
+ }
+ }
+ }
+
+ if (gso_size)
+ {
+ vnet_buffer2 (hb)->gso_size = gso_size;
+ vnet_buffer2 (hb)->gso_l4_hdr_sz = l4_hdr_sz;
+ hb->flags |= VNET_BUFFER_F_GSO;
+ }
+ vlib_buffer_advance (hb, device_input_next_node_advance[next[0]]);
+ }
+ else
+ next[0] = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
+}
+
static_always_inline uword
vmxnet3_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame, vmxnet3_device_t * vd,
@@ -93,6 +216,7 @@ vmxnet3_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
u8 known_next = 0, got_packet = 0;
vmxnet3_rx_desc *rxd;
clib_error_t *error;
+ u16 gso_size = 0;
rxq = vec_elt_at_index (vd->rxqs, qid);
comp_ring = &rxq->rx_comp_ring;
@@ -164,6 +288,14 @@ vmxnet3_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
{
ASSERT (!(rxd->flags & VMXNET3_RXF_BTYPE));
/* start segment */
+ if ((vd->lro_enable) &&
+ (rx_comp->flags & VMXNET3_RXCF_CT) == VMXNET3_RXCOMP_TYPE_LRO)
+ {
+ vmxnet3_rx_comp_ext *lro = (vmxnet3_rx_comp_ext *) rx_comp;
+
+ gso_size = lro->flags & VMXNET3_RXECF_MSS_MASK;
+ }
+
hb = b0;
bi[0] = bi0;
if (!(rx_comp->index & VMXNET3_RXCI_EOP))
@@ -232,8 +364,6 @@ vmxnet3_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
if (got_packet)
{
- ethernet_header_t *e = (ethernet_header_t *) hb->data;
-
if (PREDICT_FALSE (vd->per_interface_next_index != ~0))
{
next_index = vd->per_interface_next_index;
@@ -254,31 +384,12 @@ vmxnet3_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
}
else
{
+ ethernet_header_t *e = (ethernet_header_t *) hb->data;
+
if (ethernet_frame_is_tagged (e->type))
next[0] = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
else
- {
- if (rx_comp->flags & VMXNET3_RXCF_IP4)
- {
- next[0] = VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT;
- hb->flags |= VNET_BUFFER_F_IS_IP4;
- vlib_buffer_advance (hb,
- device_input_next_node_advance
- [next[0]]);
- }
- else if (rx_comp->flags & VMXNET3_RXCF_IP6)
- {
- next[0] = VNET_DEVICE_INPUT_NEXT_IP6_INPUT;
- hb->flags |= VNET_BUFFER_F_IS_IP6;
- vlib_buffer_advance (hb,
- device_input_next_node_advance
- [next[0]]);
- }
- else
- {
- next[0] = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
- }
- }
+ vmxnet3_handle_offload (rx_comp, hb, next, gso_size);
}
n_rx_packets++;
@@ -286,6 +397,7 @@ vmxnet3_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
bi++;
hb = 0;
got_packet = 0;
+ gso_size = 0;
}
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