vmxnet3: per interface gso support

[vpp.git] / src / plugins / vmxnet3 / input.c

diff --git a/src/plugins/vmxnet3/input.c b/src/plugins/vmxnet3/input.c
index 9392d57..b1f2834 100644 (file)
--- 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 +74,128 @@ 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 gso_size)
+{
+  u8 l4_hdr_sz = 0;
+
+  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;
+
+      /* 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)
+       {
+         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);
+           }
+         vnet_buffer2 (hb)->gso_size = gso_size;
+         vnet_buffer2 (hb)->gso_l4_hdr_sz = l4_hdr_sz;
+         hb->flags |= VNET_BUFFER_F_GSO;
+       }
+    }
+  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;
+
+      /* 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)
+       {
+         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);
+           }
+         vnet_buffer2 (hb)->gso_size = gso_size;
+         vnet_buffer2 (hb)->gso_l4_hdr_sz = l4_hdr_sz;
+         hb->flags |= VNET_BUFFER_F_GSO;
+       }
+    }
+}
+
 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 +218,7 @@ 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;
@@ -100,8 +226,9 @@ vmxnet3_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
   next = nexts;
   rx_comp = &rxq->rx_comp[comp_ring->next];
 
-  while (PREDICT_TRUE (n_rx_packets < VLIB_FRAME_SIZE) &&
-        (comp_ring->gen == (rx_comp->flags & VMXNET3_RXCF_GEN)))
+  while (PREDICT_TRUE ((n_rx_packets < VLIB_FRAME_SIZE) &&
+                      (comp_ring->gen ==
+                       (rx_comp->flags & VMXNET3_RXCF_GEN))))
     {
       vlib_buffer_t *b0;
       u32 bi0;
@@ -163,6 +290,14 @@ vmxnet3_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
        {
          ASSERT (!(rxd->flags & VMXNET3_RXF_BTYPE));
          /* start segment */
+         if (vd->gso_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))
@@ -231,8 +366,6 @@ 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;
@@ -248,36 +381,14 @@ vmxnet3_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
            }
 
          if (PREDICT_FALSE (known_next))
-           {
-             next[0] = next_index;
-           }
+           next[0] = next_index;
          else
            {
-             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;
-                   }
-               }
+             ethernet_header_t *e = (ethernet_header_t *) hb->data;
+
+             next[0] = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
+             if (!ethernet_frame_is_tagged (e->type))
+               vmxnet3_handle_offload (rx_comp, hb, gso_size);
            }
 
          n_rx_packets++;
@@ -285,6 +396,7 @@ vmxnet3_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
          bi++;
          hb = 0;
          got_packet = 0;
+         gso_size = 0;
        }
 
     next: