linux-kernel - Re: [PATCH bpf V4 1/5] xdp: rss hash types representation

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Message-ID: <3de525f4-096b-b0fe-aaf3-7992acb2451f@redhat.com>
Date:   Fri, 31 Mar 2023 21:12:26 +0200
From:   Jesper Dangaard Brouer <jbrouer@...hat.com>
To:     kernel test robot <lkp@...el.com>, bpf@...r.kernel.org,
        Stanislav Fomichev <sdf@...gle.com>,
        Toke Høiland-Jørgensen 
        <toke@...hat.com>
Cc:     brouer@...hat.com, oe-kbuild-all@...ts.linux.dev,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        martin.lau@...nel.org, ast@...nel.org, daniel@...earbox.net,
        alexandr.lobakin@...el.com, larysa.zaremba@...el.com,
        xdp-hints@...-project.net, anthony.l.nguyen@...el.com,
        yoong.siang.song@...el.com, boon.leong.ong@...el.com,
        intel-wired-lan@...ts.osuosl.org, pabeni@...hat.com,
        jesse.brandeburg@...el.com, kuba@...nel.org, edumazet@...gle.com,
        john.fastabend@...il.com, hawk@...nel.org, davem@...emloft.net,
        tariqt@...dia.com
Subject: Re: [PATCH bpf V4 1/5] xdp: rss hash types representation


Hopefully addressed in V5.

I obviously need to change function signature for all driver xmo_rx_hash
calls in patch 1/5 to make this compile.  I kept the RSS type
implementations for each driver as separate patches as this is more
reasonable to review and handle.


On 31/03/2023 20.23, kernel test robot wrote:
>
[...]
> All errors (new ones prefixed by >>):
> 
>>> drivers/net/veth.c:1685:43: error: initialization of 'int (*)(const struct xdp_md *, u32 *, enum xdp_rss_hash_type *)' {aka 'int (*)(const struct xdp_md *, unsigned int *, enum xdp_rss_hash_type *)'} from incompatible pointer type 'int (*)(const struct xdp_md *, u32 *)' {aka 'int (*)(const struct xdp_md *, unsigned int *)'} [-Werror=incompatible-pointer-types]
>      1685 |         .xmo_rx_hash                    = veth_xdp_rx_hash,
>           |                                           ^~~~~~~~~~~~~~~~
>     drivers/net/veth.c:1685:43: note: (near initialization for 'veth_xdp_metadata_ops.xmo_rx_hash')
>     cc1: some warnings being treated as errors