e1000, e1000e: Move per-packet TX offload flags out of context state

sum_needed and cptse flags are received from the guest within each
transmit data descriptor. They are not part of the offload context;
instead, they determine how to apply a previously received context to
the packet being transmitted:

- If cptse is set, perform both segmentation and checksum offload
  using the parameters in the TSO context; otherwise just do checksum
  offload. (Currently the e1000 device incorrectly stores only one
  context, which will be fixed in a subsequent patch.)

- Depending on the bits set in sum_needed, possibly perform L4
  checksum offload and/or IP checksum offload, using the parameters in
  the appropriate context.

Move these flags out of struct e1000x_txd_props, which is otherwise
dedicated to storing values from a context descriptor, and into the
per-packet TX struct.

Signed-off-by: Ed Swierk <eswierk@skyportsystems.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/hw/net/e1000e_core.h b/hw/net/e1000e_core.h
index 1ff6978ca1..7d8ff41890 100644
--- a/hw/net/e1000e_core.h
+++ b/hw/net/e1000e_core.h
@@ -71,6 +71,8 @@ struct E1000Core {
         e1000x_txd_props props;
 
         bool skip_cp;
+        unsigned char sum_needed;
+        bool cptse;
         struct NetTxPkt *tx_pkt;
     } tx[E1000E_NUM_QUEUES];