netdev - Re: [PATCH v4 bpf-next 0/2] introduce xdp_init_buff/xdp_prepare

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Date:   Sun, 20 Dec 2020 10:18:58 +0200
From:   Shay Agroskin <shayagr@...zon.com>
To:     Lorenzo Bianconi <lorenzo@...nel.org>
CC:     <bpf@...r.kernel.org>, <netdev@...r.kernel.org>,
        <davem@...emloft.net>, <kuba@...nel.org>, <ast@...nel.org>,
        <daniel@...earbox.net>, <brouer@...hat.com>,
        <lorenzo.bianconi@...hat.com>, <alexander.duyck@...il.com>,
        <maciej.fijalkowski@...el.com>, <saeed@...nel.org>
Subject: Re: [PATCH v4 bpf-next 0/2] introduce xdp_init_buff/xdp_prepare_buff


Lorenzo Bianconi <lorenzo@...nel.org> writes:

> Introduce xdp_init_buff and xdp_prepare_buff utility routines to 
> initialize
> xdp_buff data structure and remove duplicated code in all XDP 
> capable
> drivers.
>
> Changes since v3:
> - use __always_inline instead of inline for 
> xdp_init_buff/xdp_prepare_buff
> - add 'const bool meta_valid' to xdp_prepare_buff signature to 
> avoid
>   overwriting data_meta with xdp_set_data_meta_invalid()
> - introduce removed comment in bnxt driver
>
> Changes since v2:
> - precompute xdp->data as hard_start + headroom and save it in a 
> local
>   variable to reuse it for xdp->data_end and xdp->data_meta in
>   xdp_prepare_buff()
>
> Changes since v1:
> - introduce xdp_prepare_buff utility routine
>
> Lorenzo Bianconi (2):
>   net: xdp: introduce xdp_init_buff utility routine
>   net: xdp: introduce xdp_prepare_buff utility routine
>
> Acked-by: Martin Habets <habetsm.xilinx@...il.com>
> Acked-by: Camelia Groza <camelia.groza@....com>
>
>  drivers/net/ethernet/amazon/ena/ena_netdev.c  | 10 ++++------

For changes in ena driver

Acked-by: Shay Agroskin <shayagr@...zon.com>

Also, wouldn't xdp_init_buff() change once the xdp_mb series is 
merged to take care of xdp.mb = 0 part ?
Maybe this series should wait until the other one is merged ?

>  drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c |  9 +++------
>  .../net/ethernet/cavium/thunder/nicvf_main.c  | 12 ++++++------
>  .../net/ethernet/freescale/dpaa/dpaa_eth.c    | 10 ++++------
>  .../net/ethernet/freescale/dpaa2/dpaa2-eth.c  | 14 
>  +++++---------
>  drivers/net/ethernet/intel/i40e/i40e_txrx.c   | 18 
>  +++++++++---------
>  drivers/net/ethernet/intel/ice/ice_txrx.c     | 15 
>  ++++++++-------
>  drivers/net/ethernet/intel/igb/igb_main.c     | 18 
>  +++++++++---------
>  drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 19 
>  +++++++++----------
>  .../net/ethernet/intel/ixgbevf/ixgbevf_main.c | 19 
>  +++++++++----------
>  drivers/net/ethernet/marvell/mvneta.c         | 10 +++-------
>  .../net/ethernet/marvell/mvpp2/mvpp2_main.c   | 14 
>  +++++++-------
>  drivers/net/ethernet/mellanox/mlx4/en_rx.c    |  9 +++------
>  .../net/ethernet/mellanox/mlx5/core/en_rx.c   |  8 ++------
>  .../ethernet/netronome/nfp/nfp_net_common.c   | 12 ++++++------
>  drivers/net/ethernet/qlogic/qede/qede_fp.c    |  9 +++------
>  drivers/net/ethernet/sfc/rx.c                 | 10 +++-------
>  drivers/net/ethernet/socionext/netsec.c       |  9 +++------
>  drivers/net/ethernet/ti/cpsw.c                | 18 
>  ++++++------------
>  drivers/net/ethernet/ti/cpsw_new.c            | 18 
>  ++++++------------
>  drivers/net/hyperv/netvsc_bpf.c               |  8 ++------
>  drivers/net/tun.c                             | 12 ++++--------
>  drivers/net/veth.c                            | 14 
>  +++++---------
>  drivers/net/virtio_net.c                      | 18 
>  ++++++------------
>  drivers/net/xen-netfront.c                    | 10 ++++------
>  include/net/xdp.h                             | 19 
>  +++++++++++++++++++
>  net/bpf/test_run.c                            |  9 +++------
>  net/core/dev.c                                | 18 
>  ++++++++----------
>  28 files changed, 159 insertions(+), 210 deletions(-)