On Tue, Nov 4, 2025 at 6:56 AM Daniel Jurgens <[email protected]> wrote: > > Filtering a flow requires a classifier to match the packets, and a rule > to filter on the matches. > > A classifier consists of one or more selectors. There is one selector > per header type. A selector must only use fields set in the selector > capability. If partial matching is supported, the classifier mask for a > particular field can be a subset of the mask for that field in the > capability. > > The rule consists of a priority, an action and a key. The key is a byte > array containing headers corresponding to the selectors in the > classifier. > > This patch implements ethtool rules for ethernet headers. > > Example: > $ ethtool -U ens9 flow-type ether dst 08:11:22:33:44:54 action 30 > Added rule with ID 1 > > The rule in the example directs received packets with the specified > destination MAC address to rq 30. > > Signed-off-by: Daniel Jurgens <[email protected]> > Reviewed-by: Parav Pandit <[email protected]> > Reviewed-by: Shahar Shitrit <[email protected]> > Reviewed-by: Xuan Zhuo <[email protected]> > --- > v4: > - Fixed double free bug in error flows > - Build bug on for classifier struct ordering. > - (u8 *) to (void *) casting. > - Documentation in UAPI > - Answered questions about overflow with no changes. > v6: > - Fix sparse warning "array of flexible structures" Jakub K/Simon H > v7: > - Move for (int i -> for (i hunk from next patch. Paolo Abeni > --- > drivers/net/virtio_net.c | 462 +++++++++++++++++++++++++++++ > include/uapi/linux/virtio_net_ff.h | 50 ++++ > 2 files changed, 512 insertions(+) > > diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c > index 998f2b3080b5..032932e5d616 100644 > --- a/drivers/net/virtio_net.c > +++ b/drivers/net/virtio_net.c > @@ -284,6 +284,11 @@ static const struct virtnet_stat_desc > virtnet_stats_tx_speed_desc_qstat[] = { > VIRTNET_STATS_DESC_TX_QSTAT(speed, ratelimit_packets, > hw_drop_ratelimits), > }; > > +struct virtnet_ethtool_ff { > + struct xarray rules; > + int num_rules; > +}; > + > #define VIRTNET_FF_ETHTOOL_GROUP_PRIORITY 1 > #define VIRTNET_FF_MAX_GROUPS 1 > > @@ -293,8 +298,16 @@ struct virtnet_ff { > struct virtio_net_ff_cap_data *ff_caps; > struct virtio_net_ff_cap_mask_data *ff_mask; > struct virtio_net_ff_actions *ff_actions; > + struct xarray classifiers; > + int num_classifiers;
This is unused. Thanks
