> -----Original Message-----
> From: Maxime Coquelin <maxime.coque...@redhat.com>
> Sent: Tuesday, March 16, 2021 5:38 PM
> To: dev@dpdk.org; Xia, Chenbo <chenbo....@intel.com>; amore...@redhat.com;
> david.march...@redhat.com; olivier.m...@6wind.com; bnem...@redhat.com
> Cc: Maxime Coquelin <maxime.coque...@redhat.com>
> Subject: [PATCH v4 0/4] net/virtio: make virtqueue struct cache-friendly
>
> This series optimizes the cache usage of virtqueue struct,
> by making a "fake" mbuf being dynamically allocated in Rx
> virtnet struct, by removing a useless virtuque pointer
> into the virtnet structs and by moving a few fields
> to pack holes.
>
> drivers/net/virtio/virtio_ethdev.c | 64 +++++++++++--------
> drivers/net/virtio/virtio_rxtx.c | 37 +++++------
> drivers/net/virtio/virtio_rxtx.h | 5 +-
> drivers/net/virtio/virtio_rxtx_packed.c | 4 +-
> drivers/net/virtio/virtio_rxtx_packed.h | 6 +-
> drivers/net/virtio/virtio_rxtx_packed_avx.h | 4 +-
> drivers/net/virtio/virtio_rxtx_packed_neon.h | 4 +-
> drivers/net/virtio/virtio_rxtx_simple.h | 2 +-
> .../net/virtio/virtio_rxtx_simple_altivec.c | 2 +-
> drivers/net/virtio/virtio_rxtx_simple_neon.c | 2 +-
> drivers/net/virtio/virtio_rxtx_simple_sse.c | 2 +-
> .../net/virtio/virtio_user/virtio_user_dev.c | 4 +-
> drivers/net/virtio/virtio_user_ethdev.c | 2 +-
> drivers/net/virtio/virtqueue.h | 24 ++++---
> 14 files changed, 87 insertions(+), 75 deletions(-)
>
> --
> 2.29.2
With below commit log change(because of commit log line too long)
net/virtio: allocate fake mbuf in Rx queue
[...]
struct virtnet_rx {
struct virtqueue *vq; /*0 8*/
/* XXX 56 bytes hole, try to pack */
/* --- cacheline 1 boundary (64 bytes) --- */
struct rte_mbuf fake_mbuf __attribute__((__aligned__(64))); /*64 128*/
/* --- cacheline 3 boundary (192 bytes) --- */
Series applied to next-virtio/main.
Thanks!
Chenbo
