On Thu, Feb 22, 2024 at 3:38 PM Rahul Bhansali <rbhans...@marvell.com> wrote:
>
> LLC transaction optimization by using LDWB LDTYPE option
> in SG preparation for Tx. With this, if data is present
> and dirty in LLC then the LLC would mark the data clean.
>
> Signed-off-by: Rahul Bhansali <rbhans...@marvell.com>
Series applied to dpdk-next-net-mrvl/for-main. Thanks
> ---
> Changes in v2: No change
>
> drivers/net/cnxk/cn10k_tx.h | 16 +++++++++++++---
> 1 file changed, 13 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/cnxk/cn10k_tx.h b/drivers/net/cnxk/cn10k_tx.h
> index 664e47e1fc..fcd19be77e 100644
> --- a/drivers/net/cnxk/cn10k_tx.h
> +++ b/drivers/net/cnxk/cn10k_tx.h
> @@ -331,9 +331,15 @@ cn10k_nix_tx_skeleton(struct cn10k_eth_txq *txq,
> uint64_t *cmd,
> else
> cmd[2] = NIX_SUBDC_EXT << 60;
> cmd[3] = 0;
> - cmd[4] = (NIX_SUBDC_SG << 60) | BIT_ULL(48);
> + if (!(flags & NIX_TX_OFFLOAD_MBUF_NOFF_F))
> + cmd[4] = (NIX_SUBDC_SG << 60) | (NIX_SENDLDTYPE_LDWB
> << 58) | BIT_ULL(48);
> + else
> + cmd[4] = (NIX_SUBDC_SG << 60) | BIT_ULL(48);
> } else {
> - cmd[2] = (NIX_SUBDC_SG << 60) | BIT_ULL(48);
> + if (!(flags & NIX_TX_OFFLOAD_MBUF_NOFF_F))
> + cmd[2] = (NIX_SUBDC_SG << 60) | (NIX_SENDLDTYPE_LDWB
> << 58) | BIT_ULL(48);
> + else
> + cmd[2] = (NIX_SUBDC_SG << 60) | BIT_ULL(48);
> }
> }
>
> @@ -1989,7 +1995,11 @@ cn10k_nix_xmit_pkts_vector(void *tx_queue, uint64_t
> *ws,
>
> senddesc01_w1 = vdupq_n_u64(0);
> senddesc23_w1 = senddesc01_w1;
> - sgdesc01_w0 = vdupq_n_u64((NIX_SUBDC_SG << 60) | BIT_ULL(48));
> + if (!(flags & NIX_TX_OFFLOAD_MBUF_NOFF_F))
> + sgdesc01_w0 = vdupq_n_u64((NIX_SUBDC_SG << 60) |
> (NIX_SENDLDTYPE_LDWB << 58) |
> + BIT_ULL(48));
> + else
> + sgdesc01_w0 = vdupq_n_u64((NIX_SUBDC_SG << 60) | BIT_ULL(48));
> sgdesc23_w0 = sgdesc01_w0;
>
> if (flags & NIX_TX_NEED_EXT_HDR) {
> --
> 2.25.1
>
