diff options
| author | Larysa Zaremba <larysa.zaremba@intel.com> | 2023-12-06 00:08:39 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-12-14 03:16:41 +0300 |
| commit | 714ed949c6f3ebdff562bd9eb7247abf6a79a416 (patch) | |
| tree | 61498bc14409d767073a3b6192a85deb05771731 /drivers/net/ethernet/intel/ice/ice_txrx_lib.c | |
| parent | e6795330f88b4f643c649a02662d47b779340535 (diff) | |
| download | linux-714ed949c6f3ebdff562bd9eb7247abf6a79a416.tar.xz | |
ice: Implement VLAN tag hint
Implement .xmo_rx_vlan_tag callback to allow XDP code to read
packet's VLAN tag.
At the same time, use vlan_tci instead of vlan_tag in touched code,
because VLAN tag often refers to VLAN proto and VLAN TCI combined,
while in the code we clearly store only VLAN TCI.
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Link: https://lore.kernel.org/r/20231205210847.28460-11-larysa.zaremba@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_txrx_lib.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_txrx_lib.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c index 09610c5615a8..25ffb539b474 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c @@ -599,7 +599,33 @@ static int ice_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash, return 0; } +/** + * ice_xdp_rx_vlan_tag - VLAN tag XDP hint handler + * @ctx: XDP buff pointer + * @vlan_proto: destination address for VLAN protocol + * @vlan_tci: destination address for VLAN TCI + * + * Copy VLAN tag (if was stripped) and corresponding protocol + * to the destination address. + */ +static int ice_xdp_rx_vlan_tag(const struct xdp_md *ctx, __be16 *vlan_proto, + u16 *vlan_tci) +{ + const struct ice_xdp_buff *xdp_ext = (void *)ctx; + + *vlan_proto = xdp_ext->pkt_ctx->vlan_proto; + if (!*vlan_proto) + return -ENODATA; + + *vlan_tci = ice_get_vlan_tci(xdp_ext->eop_desc); + if (!*vlan_tci) + return -ENODATA; + + return 0; +} + const struct xdp_metadata_ops ice_xdp_md_ops = { .xmo_rx_timestamp = ice_xdp_rx_hw_ts, .xmo_rx_hash = ice_xdp_rx_hash, + .xmo_rx_vlan_tag = ice_xdp_rx_vlan_tag, }; |