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a4dd7a1dad
qemu/hw/net
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Nabih Estefan Diaz a4dd7a1dad hw/net: GMAC Rx Implementation 
- Implementation of Receive function for packets
- Implementation for reading and writing from and to descriptors in
  memory for Rx

When RX starts, we need to flush the queued packets so that they
can be received by the GMAC device. Without this it won't work
with TAP NIC device.

When RX descriptor list is full, it returns a DMA_STATUS for
software to handle it. But there's no way to indicate the software has
handled all RX descriptors and the whole pipeline stalls.

We do something similar to NPCM7XX EMC to handle this case.

1. Return packet size when RX descriptor is full, effectively dropping
these packets in such a case.
2. When software clears RX descriptor full bit, continue receiving
further packets by flushing QEMU packet queue.

Added relevant trace-events

Change-Id: I132aa254a94cda1a586aba2ea33bbfc74ecdb831
Signed-off-by: Hao Wu <wuhaotsh@google.com>
Signed-off-by: Nabih Estefan <nabihestefan@google.com>
Reviewed-by: Tyrone Ting <kfting@nuvoton.com>
Message-id: 20240131002800.989285-5-nabihestefan@google.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-02-02 13:51:59 +00:00
..
can hw/net/can/sja1000: fix bug for single acceptance filter and standard frame 2024-01-05 16:20:15 +01:00
fsl_etsec net: Provide MemReentrancyGuard * to qemu_new_nic() 2023-11-21 15:42:34 +08:00
rocker net: Provide MemReentrancyGuard * to qemu_new_nic() 2023-11-21 15:42:34 +08:00
allwinner_emac.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
allwinner-sun8i-emac.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
cadence_gem.c hw/net: cadence_gem: Fix MDIO_OP_xxx values 2024-01-05 22:28:54 +03:00
dp8393x.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
e1000_common.h e1000: Split header files 2023-03-10 15:35:38 +08:00
e1000_regs.h hw/net: spelling fixes 2023-09-20 07:54:34 +03:00
e1000.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
e1000e_core.c e1000e: rename e1000e_ba_state and e1000e_write_hdr_to_rx_buffers 2023-09-18 14:36:13 +08:00
e1000e_core.h e1000e: Notify only new interrupts 2023-05-23 15:20:15 +08:00
e1000e.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
e1000x_common.c e1000x: Take CRC into consideration for size check 2023-05-23 15:20:15 +08:00
e1000x_common.h e1000x: Share more Rx filtering logic 2023-05-23 15:20:15 +08:00
e1000x_regs.h hw/net: spelling fixes 2023-09-20 07:54:34 +03:00
eepro100.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
etraxfs_eth.c net: Provide MemReentrancyGuard * to qemu_new_nic() 2023-11-21 15:42:34 +08:00
ftgmac100.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
i82596.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
i82596.h hw/net: Make NetCanReceive() return a boolean 2020-03-31 21:14:35 +08:00
igb_common.h igb: Add a VF reset handler 2023-11-13 15:33:37 +08:00
igb_core.c igb: Add a VF reset handler 2023-11-13 15:33:37 +08:00
igb_core.h igb: Add a VF reset handler 2023-11-13 15:33:37 +08:00
igb_regs.h hw/net: spelling fixes 2023-09-20 07:54:34 +03:00
igb.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
igbvf.c igb: Add Function Level Reset to PF and VF 2023-11-13 15:33:37 +08:00
imx_fec.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
Kconfig kconfig: Add PCIe devices to s390x machines 2023-07-14 11:10:57 +02:00
lan9118.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
lance.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
lasi_i82596.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
mcf_fec.c net: Provide MemReentrancyGuard * to qemu_new_nic() 2023-11-21 15:42:34 +08:00
meson.build hw/net: Add NPCMXXX GMAC device 2024-02-02 13:51:59 +00:00
mipsnet.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
msf2-emac.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
mv88w8618_eth.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
ne2000-isa.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
ne2000-pci.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
ne2000.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
ne2000.h Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
net_rx_pkt.c igb: Strip the second VLAN tag for extended VLAN 2023-05-23 15:20:15 +08:00
net_rx_pkt.h igb: Strip the second VLAN tag for extended VLAN 2023-05-23 15:20:15 +08:00
net_tx_pkt.c igb: Implement Tx SCTP CSO 2023-05-23 15:20:15 +08:00
net_tx_pkt.h igb: Implement Tx SCTP CSO 2023-05-23 15:20:15 +08:00
npcm7xx_emc.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
npcm_gmac.c hw/net: GMAC Rx Implementation 2024-02-02 13:51:59 +00:00
opencores_eth.c net: Provide MemReentrancyGuard * to qemu_new_nic() 2023-11-21 15:42:34 +08:00
pcnet-pci.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
pcnet.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
pcnet.h net: Replace TAB indentations with spaces 2022-11-11 09:39:03 +01:00
rtl8139.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
smc91c111.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
spapr_llan.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
stellaris_enet.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
sungem.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
sunhme.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
trace-events hw/net: GMAC Rx Implementation 2024-02-02 13:51:59 +00:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
tulip.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
tulip.h Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
vhost_net-stub.c virtio-net: add support for configure interrupt 2023-01-08 01:54:22 -05:00
vhost_net.c hw/net/vhost_net: Silence compiler warning when compiling with -Wshadow 2023-10-06 10:56:54 +02:00
virtio-net.c virtio-net: correctly copy vnet header when flushing TX 2024-01-25 14:58:00 +08:00
vmware_utils.h hw/net/vmxnet3: Fix code to work on big endian hosts, too 2017-11-20 11:08:00 +08:00
vmxnet3_defs.h include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
vmxnet3.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
vmxnet3.h hw/net: spelling fixes 2023-09-20 07:54:34 +03:00
vmxnet_debug.h
xen_nic.c system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
xgmac.c hw/net: Constify VMState 2023-12-30 07:38:06 +11:00
xilinx_axienet.c net: Provide MemReentrancyGuard * to qemu_new_nic() 2023-11-21 15:42:34 +08:00
xilinx_ethlite.c net: Provide MemReentrancyGuard * to qemu_new_nic() 2023-11-21 15:42:34 +08:00