This is an attempt to add LSC and Rxq interrupt for a virtual device,
virtio-user (with the backend of both vhost-user and vhost-kernel).
HOW TO TEST:
Step 1: start testpmd with a virtual vhost device:
$ testpmd -c 0x3 -n 4 --socket-mem 1024 --no-pci \
--vdev 'eth_vhost0,iface=/tmp/sock0' -- -i
Step 2: start l3fwd-power with a virtio-user device:
$ l3fwd-power -c 0xc -n 4 --socket-mem 1024 --no-pci \
--file-prefix=l3fwd-pwd \
--vdev=virtio_user0,path=/tmp/sock0 \
-- -p 1 -P --config="(0,0,1)" \
--no-numa --parse-ptype
Step 3: start burst in testpmd
(testpmd)> start tx_first
Packets will be received and forwarded back by l3fwd-power.
And l3fwd-power will keep in polling mode.
Step 4: stop burst in testpmd
(testpmd)> stop
l3fwd-power will change to interrupt mode with few CPU
consumption.
Step 5: kill testpmd
$ kill -p `pidof testpmd`
The link status will be changed to down in l3fwd-power.
Signed-off-by: Jianfeng Tan <jianfeng....@intel.com>
Jianfeng Tan (5):
eal/linux: add interrupt type for vdev
net/virtio-user: add rxq interrupt mode support
net/virtio-user: support to report net status
net/virtio-user: add lsc support with vhost-user adapter
net/virtio-user: add lsc support with vhost-kernel adapter
drivers/net/virtio/virtio_ethdev.c | 46 +++++++++----
drivers/net/virtio/virtio_ethdev.h | 2 +
drivers/net/virtio/virtio_user/virtio_user_dev.c | 52 ++++++++++++++-
drivers/net/virtio/virtio_user/virtio_user_dev.h | 4 +-
drivers/net/virtio/virtio_user_ethdev.c | 76 +++++++++++++++++++---
lib/librte_eal/linuxapp/eal/eal_interrupts.c | 32 ++++++++-
lib/librte_eal/linuxapp/eal/eal_pci_vfio.c | 2 +
.../linuxapp/eal/include/exec-env/rte_interrupts.h | 5 +-
8 files changed, 192 insertions(+), 27 deletions(-)
--
2.7.4
