Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

# gpg: Signature made Mon 15 Mar 2021 08:42:25 GMT
# gpg:                using RSA key EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* remotes/jasowang/tags/net-pull-request:
  net: Do not fill legacy info_str for backends
  hmp: Use QAPI NetdevInfo in hmp_info_network
  net: Move NetClientState.info_str to dynamic allocations
  tests: Add tests for query-netdev command
  qapi: net: Add query-netdev command
  pvrdma: wean code off pvrdma_ring.h kernel header
  lan9118: switch to use qemu_receive_packet() for loopback
  cadence_gem: switch to use qemu_receive_packet() for loopback
  pcnet: switch to use qemu_receive_packet() for loopback
  rtl8139: switch to use qemu_receive_packet() for loopback
  tx_pkt: switch to use qemu_receive_packet_iov() for loopback
  sungem: switch to use qemu_receive_packet() for loopback
  msf2-mac: switch to use qemu_receive_packet() for loopback
  dp8393x: switch to use qemu_receive_packet() for loopback packet
  e1000: switch to use qemu_receive_packet() for loopback
  net: introduce qemu_receive_packet()
  e1000: fail early for evil descriptor
  net: validate that ids are well formed
  net: Fix build error when DEBUG_NET is on
  virtio-net: calculating proper msix vectors on init

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# Conflicts:
#	hw/core/machine.c