Re: [dpdk-dev] [PATCH v11 0/5] net/virtio: support GUEST ANNOUNCE

[Yuanhan Liu <yliu@fridaylinux.org>]

Xiao told me that this series (except the last patch) was already applied
to the Thomas master branch. I then realised it was my mistake.

I applied v10 last week locally for some basic testing. There is a conflict
in last patch, that's why the last patch is not merged. I forgot to do
a reset before I applied another patch. Then later, I did a push to the
next-virtio tree, thus patches from Xiao were also pushed. Ferruh then
did a pull from it. As a result, they got merged to the master branch
before I realised. Non-rebase is allowed there, thus I have made a patch
to fix my mistake.

Meanwhile, I have also spotted a build error when shared lib is enabled.
I will send them out soon.

	--yliu

On Wed, Jan 17, 2018 at 05:40:58AM +0800, Xiao Wang wrote:
> When live migration is finished, the backup VM needs to proactively announce
> its new location. DPDK vhost has implemented VHOST_USER_PROTOCOL_F_RARP to
> generate a RARP packet to switch in dequeue path. Another method is to let
> the guest proactively send out RARP packet using VIRTIO_NET_F_GUEST_ANNOUNCE
> feature.
> 
> This patch set enables this feature in virtio pmd, to support VM running virtio
> pmd be migrated without vhost supporting RARP generation.
> 
> v11:
> - Add check for parameter and tailroom in rte_net_make_rarp_packet.
> - Allocate mbuf in rte_net_make_rarp_packet.
> 
> v10:
> - Add a bold doxygen comment for the experimental function.
> 
> v9:
> - Introduce function with the experimental state.
> 
> v8:
> - Add a helper in lib/librte_net to make rarp packet, it's used by
>   both vhost and virtio.
> 
> v7:
> - Improve comment for state_lock.
> - Rename spinlock variable 'sl' to 'lock'.
> 
> v6:
> - Use rte_pktmbuf_alloc() instead of rte_mbuf_raw_alloc().
> - Remove the 'len' parameter in calling virtio_send_command().
> - Remove extra space between typo and var.
> - Improve comment and alignment.
> - Remove the unnecessary header file.
> - A better usage of 'unlikely' indication.
> 
> v5:
> - Remove txvq parameter in virtio_inject_pkts.
> - Zero hw->special_buf after using it.
> - Return the retval of tx_pkt_burst().
> - Allocate a mbuf pointer on stack directly.
> 
> v4:
> - Move spinlock lock/unlock into dev_pause/resume.
> - Separate out a patch for packet injection.
> 
> v3:
> - Remove Tx function code duplication, use a special pointer for rarp
>   injection.
> - Rename function generate_rarp to virtio_notify_peers, replace
>   'virtnet_' with 'virtio_'.
> - Add comment for state_lock.
> - Typo fix and comment improvement.
> 
> v2:
> - Use spaces instead of tabs between the code and comments.
> - Remove unnecessary parentheses.
> - Use rte_pktmbuf_mtod directly to get eth_hdr addr.
> - Fix virtio_dev_pause return value check.
> 
> Xiao Wang (5):
>   net/virtio: make control queue thread-safe
>   net/virtio: add packet injection method
>   net: add a helper for making RARP packet
>   vhost: use lib API to make RARP packet
>   net/virtio: support GUEST ANNOUNCE
> 
>  drivers/net/virtio/virtio_ethdev.c      | 113 +++++++++++++++++++++++++++++++-
>  drivers/net/virtio/virtio_ethdev.h      |   6 ++
>  drivers/net/virtio/virtio_pci.h         |   7 ++
>  drivers/net/virtio/virtio_rxtx.c        |   3 +-
>  drivers/net/virtio/virtio_rxtx.h        |   1 +
>  drivers/net/virtio/virtio_rxtx_simple.c |   2 +-
>  drivers/net/virtio/virtqueue.h          |  11 ++++
>  lib/Makefile                            |   3 +-
>  lib/librte_net/Makefile                 |   1 +
>  lib/librte_net/rte_arp.c                |  50 ++++++++++++++
>  lib/librte_net/rte_arp.h                |  18 +++++
>  lib/librte_net/rte_net_version.map      |   6 ++
>  lib/librte_vhost/Makefile               |   2 +-
>  lib/librte_vhost/virtio_net.c           |  51 +-------------
>  14 files changed, 219 insertions(+), 55 deletions(-)
>  create mode 100644 lib/librte_net/rte_arp.c
> 
> -- 
> 2.15.1