Re: [net-next v4 06/12] net: bnxt: Add TX inline buffer infrastructure
From: Pavan Chebbi <pavan.chebbi@broadcom.com>
Date: 2026-03-21 07:27:33
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On Fri, Mar 20, 2026 at 8:12 PM Joe Damato [off-list ref] wrote:
Add per-ring pre-allocated inline buffer fields (tx_inline_buf, tx_inline_dma, tx_inline_size) to bnxt_tx_ring_info and helpers to allocate and free them. A producer and consumer (tx_inline_prod, tx_inline_cons) are added to track which slot(s) of the inline buffer are in-use. The inline buffer will be used by the SW USO path for pre-allocated, pre-DMA-mapped per-segment header copies. In the future, this could be extended to support TX copybreak. Allocation helper is marked __maybe_unused in this commit because it will be wired in later. Suggested-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Joe Damato <redacted> --- rfcv2: - Added a producer and consumer to correctly track the in use header slots. drivers/net/ethernet/broadcom/bnxt/bnxt.c | 35 +++++++++++++++++++++++ drivers/net/ethernet/broadcom/bnxt/bnxt.h | 6 ++++ 2 files changed, 41 insertions(+)
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
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