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xdp: Add VLAN tag hint

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Implement functionality that enables drivers to expose VLAN tag
to XDP code.

VLAN tag is represented by 2 variables:
- protocol ID, which is passed to bpf code in BE
- VLAN TCI, in host byte order

Acked-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Acked-by: Jesper Dangaard Brouer <hawk@kernel.org>
Link: https://lore.kernel.org/r/20231205210847.28460-10-larysa.zaremba@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Larysa Zaremba
2023-12-05 22:08:38 +01:00
committed by Andrii Nakryiko
parent b166b99eed
commit 43e7309228
1 changed files with 3 additions and 3 deletions
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6
include/uapi/linux/netdev.h
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@@ -44,13 +44,13 @@ enum netdev_xdp_act {
* timestamp via bpf_xdp_metadata_rx_timestamp(). * timestamp via bpf_xdp_metadata_rx_timestamp().
* @NETDEV_XDP_RX_METADATA_HASH: Device is capable of exposing receive packet * @NETDEV_XDP_RX_METADATA_HASH: Device is capable of exposing receive packet
* hash via bpf_xdp_metadata_rx_hash(). * hash via bpf_xdp_metadata_rx_hash().
* @NETDEV_XDP_RX_METADATA_VLAN_TAG: Device is capable of exposing receive
* packet VLAN tag via bpf_xdp_metadata_rx_vlan_tag().
*/ */
enum netdev_xdp_rx_metadata { enum netdev_xdp_rx_metadata {
NETDEV_XDP_RX_METADATA_TIMESTAMP = 1, NETDEV_XDP_RX_METADATA_TIMESTAMP = 1,
NETDEV_XDP_RX_METADATA_HASH = 2, NETDEV_XDP_RX_METADATA_HASH = 2,
NETDEV_XDP_RX_METADATA_VLAN_TAG = 4,
/* private: */
NETDEV_XDP_RX_METADATA_MASK = 3,
}; };
/** /**