diff options
| author | Martin KaFai Lau <martin.lau@kernel.org> | 2023-09-15 09:18:10 -0700 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2023-09-15 11:26:58 -0700 |
| commit | 45ee73a0722b9e1d0b7a524d06756291b13b5912 (patch) | |
| tree | e7289b549a2a43c1ccae951f99284042f14cb57a /include | |
| parent | d609f3d228a8efe991f44f11f24146e2a5209755 (diff) | |
| parent | 0c6c9b105ee90d7415dc796bcf632147b3d267ce (diff) | |
Merge branch 'bpf: expose information about netdev xdp-metadata kfunc support'
Stanislav Fomichev says:
====================
Extend netdev netlink family to expose the bitmask with the
kfuncs that the device implements. The source of truth is the
device's xdp_metadata_ops. There is some amount of auto-generated
netlink boilerplate; the change itself is super minimal.
v2:
- add netdev->xdp_metadata_ops NULL check when dumping to netlink (Martin)
Cc: netdev@vger.kernel.org
Cc: Willem de Bruijn <willemb@google.com>
====================
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/xdp.h | 19 | ||||
| -rw-r--r-- | include/uapi/linux/netdev.h | 16 |
2 files changed, 31 insertions, 4 deletions
diff --git a/include/net/xdp.h b/include/net/xdp.h index de08c8e0d134..349c36fb5fd8 100644 --- a/include/net/xdp.h +++ b/include/net/xdp.h @@ -383,14 +383,25 @@ void xdp_attachment_setup(struct xdp_attachment_info *info, #define DEV_MAP_BULK_SIZE XDP_BULK_QUEUE_SIZE +/* Define the relationship between xdp-rx-metadata kfunc and + * various other entities: + * - xdp_rx_metadata enum + * - netdev netlink enum (Documentation/netlink/specs/netdev.yaml) + * - kfunc name + * - xdp_metadata_ops field + */ #define XDP_METADATA_KFUNC_xxx \ XDP_METADATA_KFUNC(XDP_METADATA_KFUNC_RX_TIMESTAMP, \ - bpf_xdp_metadata_rx_timestamp) \ + NETDEV_XDP_RX_METADATA_TIMESTAMP, \ + bpf_xdp_metadata_rx_timestamp, \ + xmo_rx_timestamp) \ XDP_METADATA_KFUNC(XDP_METADATA_KFUNC_RX_HASH, \ - bpf_xdp_metadata_rx_hash) \ + NETDEV_XDP_RX_METADATA_HASH, \ + bpf_xdp_metadata_rx_hash, \ + xmo_rx_hash) \ -enum { -#define XDP_METADATA_KFUNC(name, _) name, +enum xdp_rx_metadata { +#define XDP_METADATA_KFUNC(name, _, __, ___) name, XDP_METADATA_KFUNC_xxx #undef XDP_METADATA_KFUNC MAX_XDP_METADATA_KFUNC, diff --git a/include/uapi/linux/netdev.h b/include/uapi/linux/netdev.h index c1634b95c223..2943a151d4f1 100644 --- a/include/uapi/linux/netdev.h +++ b/include/uapi/linux/netdev.h @@ -38,11 +38,27 @@ enum netdev_xdp_act { NETDEV_XDP_ACT_MASK = 127, }; +/** + * enum netdev_xdp_rx_metadata + * @NETDEV_XDP_RX_METADATA_TIMESTAMP: Device is capable of exposing receive HW + * timestamp via bpf_xdp_metadata_rx_timestamp(). + * @NETDEV_XDP_RX_METADATA_HASH: Device is capable of exposing receive packet + * hash via bpf_xdp_metadata_rx_hash(). + */ +enum netdev_xdp_rx_metadata { + NETDEV_XDP_RX_METADATA_TIMESTAMP = 1, + NETDEV_XDP_RX_METADATA_HASH = 2, + + /* private: */ + NETDEV_XDP_RX_METADATA_MASK = 3, +}; + enum { NETDEV_A_DEV_IFINDEX = 1, NETDEV_A_DEV_PAD, NETDEV_A_DEV_XDP_FEATURES, NETDEV_A_DEV_XDP_ZC_MAX_SEGS, + NETDEV_A_DEV_XDP_RX_METADATA_FEATURES, __NETDEV_A_DEV_MAX, NETDEV_A_DEV_MAX = (__NETDEV_A_DEV_MAX - 1) |