diff options
| author | Alexander Lobakin <aleksander.lobakin@intel.com> | 2025-06-12 19:02:31 +0300 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2025-06-16 21:40:15 +0300 |
| commit | 40e846d122df9b299e700ec86d01ef647fc0b09f (patch) | |
| tree | da6b9259b1ea62f844ce8a6e8243b14182acc91d /include/net/libeth/tx.h | |
| parent | b3ad8450b4dc46c4ab0641f665068fd2a4d1adba (diff) | |
| download | linux-40e846d122df9b299e700ec86d01ef647fc0b09f.tar.xz | |
libeth: xsk: add XSk xmit functions
Reuse core sending functions to send XSk xmit frames.
Both metadata and no metadata pools/driver are supported. libeth_xdp
also provides generic XSk metadata ops, currently with the checksum
offload only and for cases when HW doesn't require supplying L3/L4
checksum offsets. Drivers are free to pass their own ops.
&libeth_xdp_tx_bulk is not used here as it would be redundant;
pool->tx_descs are accessed directly.
Fake "libeth_xsktmo" is needed to hide implementation details from the
drivers when they want to use the generic ops: the original struct is
defined in the same file where dev->xsk_tx_metadata_ops gets set to
avoid duplication of slowpath; at the same time; XSk xmit functions
use local "fast" copy to inline XMO callbacks.
Tx descriptor filling loop is unrolled by 8.
Suggested-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> # optimizations
Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'include/net/libeth/tx.h')
| -rw-r--r-- | include/net/libeth/tx.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/net/libeth/tx.h b/include/net/libeth/tx.h index 44192bec86d7..c3db5c6f1641 100644 --- a/include/net/libeth/tx.h +++ b/include/net/libeth/tx.h @@ -12,7 +12,7 @@ /** * enum libeth_sqe_type - type of &libeth_sqe to act on Tx completion - * @LIBETH_SQE_EMPTY: unused/empty OR XDP_TX frag, no action required + * @LIBETH_SQE_EMPTY: unused/empty OR XDP_TX/XSk frame, no action required * @LIBETH_SQE_CTX: context descriptor with empty SQE, no action required * @LIBETH_SQE_SLAB: kmalloc-allocated buffer, unmap and kfree() * @LIBETH_SQE_FRAG: mapped skb frag, only unmap DMA @@ -93,7 +93,7 @@ struct libeth_sqe { * @bq: XDP frame bulk to combine return operations * @ss: onstack NAPI stats to fill * @xss: onstack XDPSQ NAPI stats to fill - * @xdp_tx: number of XDP frames processed + * @xdp_tx: number of XDP-not-XSk frames processed * @napi: whether it's called from the NAPI context * * libeth uses this structure to access objects needed for performing full |