diff options
| author | Larysa Zaremba <larysa.zaremba@intel.com> | 2023-12-06 00:08:33 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-12-14 03:16:40 +0300 |
| commit | d951c14ad237b087f0d1377c44932fcc0b322c40 (patch) | |
| tree | 80b5844be8c9ebc54ed7814dad6cddbb77aca313 /drivers/net/ethernet/intel/ice/ice_txrx_lib.h | |
| parent | 6b62a42149032db305dfd687d7118aa870b4a2f9 (diff) | |
| download | linux-d951c14ad237b087f0d1377c44932fcc0b322c40.tar.xz | |
ice: Introduce ice_xdp_buff
In order to use XDP hints via kfuncs we need to put
RX descriptor and miscellaneous data next to xdp_buff.
Same as in hints implementations in other drivers, we achieve
this through putting xdp_buff into a child structure.
Currently, xdp_buff is stored in the ring structure,
so replace it with union that includes child structure.
This way enough memory is available while existing XDP code
remains isolated from hints.
Minimum size of the new child structure (ice_xdp_buff) is exactly
64 bytes (single cache line). To place it at the start of a cache line,
move 'next' field from CL1 to CL4, as it isn't used often. This still
leaves 192 bits available in CL3 for packet context extensions.
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/r/20231205210847.28460-5-larysa.zaremba@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_txrx_lib.h')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_txrx_lib.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx_lib.h b/drivers/net/ethernet/intel/ice/ice_txrx_lib.h index e1d49e1235b3..81b8856d8e13 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx_lib.h +++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.h @@ -151,4 +151,14 @@ ice_process_skb_fields(struct ice_rx_ring *rx_ring, struct sk_buff *skb); void ice_receive_skb(struct ice_rx_ring *rx_ring, struct sk_buff *skb, u16 vlan_tag); + +static inline void +ice_xdp_meta_set_desc(struct xdp_buff *xdp, + union ice_32b_rx_flex_desc *eop_desc) +{ + struct ice_xdp_buff *xdp_ext = container_of(xdp, struct ice_xdp_buff, + xdp_buff); + + xdp_ext->eop_desc = eop_desc; +} #endif /* !_ICE_TXRX_LIB_H_ */ |