[0/2] net: Update MemReentrancyGuard for NIC

Message

Akihiko Odaki May 30, 2023, 2:43 a.m. UTC

Recently MemReentrancyGuard was added to DeviceState to record that the
device is engaging in I/O. The network device backend needs to update it
when delivering a packet to a device.

This implementation follows what bottom half does, but it does not add
a tracepoint for the case that the network device backend started
delivering a packet to a device which is already engaging in I/O. This
is because such reentrancy frequently happens for
qemu_flush_queued_packets() and is insignificant.

This series consists of two patches. The first patch makes a bulk change to
add a new parameter to qemu_new_nic() and does not contain behavioral changes.
The second patch actually implements MemReentrancyGuard update.

Akihiko Odaki (2):
  net: Provide MemReentrancyGuard * to qemu_new_nic()
  net: Update MemReentrancyGuard for NIC

 include/net/net.h             |  2 ++
 hw/net/allwinner-sun8i-emac.c |  3 ++-
 hw/net/allwinner_emac.c       |  3 ++-
 hw/net/cadence_gem.c          |  3 ++-
 hw/net/dp8393x.c              |  3 ++-
 hw/net/e1000.c                |  3 ++-
 hw/net/e1000e.c               |  2 +-
 hw/net/eepro100.c             |  4 +++-
 hw/net/etraxfs_eth.c          |  3 ++-
 hw/net/fsl_etsec/etsec.c      |  3 ++-
 hw/net/ftgmac100.c            |  3 ++-
 hw/net/i82596.c               |  2 +-
 hw/net/igb.c                  |  2 +-
 hw/net/imx_fec.c              |  2 +-
 hw/net/lan9118.c              |  3 ++-
 hw/net/mcf_fec.c              |  3 ++-
 hw/net/mipsnet.c              |  3 ++-
 hw/net/msf2-emac.c            |  3 ++-
 hw/net/mv88w8618_eth.c        |  3 ++-
 hw/net/ne2000-isa.c           |  3 ++-
 hw/net/ne2000-pci.c           |  3 ++-
 hw/net/npcm7xx_emc.c          |  3 ++-
 hw/net/opencores_eth.c        |  3 ++-
 hw/net/pcnet.c                |  3 ++-
 hw/net/rocker/rocker_fp.c     |  4 ++--
 hw/net/rtl8139.c              |  3 ++-
 hw/net/smc91c111.c            |  3 ++-
 hw/net/spapr_llan.c           |  3 ++-
 hw/net/stellaris_enet.c       |  3 ++-
 hw/net/sungem.c               |  2 +-
 hw/net/sunhme.c               |  3 ++-
 hw/net/tulip.c                |  3 ++-
 hw/net/virtio-net.c           |  6 ++++--
 hw/net/vmxnet3.c              |  2 +-
 hw/net/xen_nic.c              |  4 ++--
 hw/net/xgmac.c                |  3 ++-
 hw/net/xilinx_axienet.c       |  3 ++-
 hw/net/xilinx_ethlite.c       |  3 ++-
 hw/usb/dev-network.c          |  3 ++-
 net/net.c                     | 15 +++++++++++++++
 40 files changed, 90 insertions(+), 41 deletions(-)