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Date: Thu, 10 Nov 2022 23:29:55 -0800
From: Yonghong Song <yhs@...a.com>
To: Yang Jihong <yangjihong1@...wei.com>, ast@...nel.org,
daniel@...earbox.net, davem@...emloft.net, kuba@...nel.org,
hawk@...nel.org, john.fastabend@...il.com, andrii@...nel.org,
martin.lau@...ux.dev, song@...nel.org, yhs@...com,
kpsingh@...nel.org, sdf@...gle.com, haoluo@...gle.com,
jolsa@...nel.org, mykolal@...com, shuah@...nel.org,
tariqt@...dia.com, maximmi@...dia.com, netdev@...r.kernel.org,
bpf@...r.kernel.org, linux-kselftest@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH bpf v2] selftests/bpf: Fix xdp_synproxy compilation
failure in 32-bit arch
On 11/10/22 7:08 PM, Yang Jihong wrote:
> xdp_synproxy fails to be compiled in the 32-bit arch, log is as follows:
>
> xdp_synproxy.c: In function 'parse_options':
> xdp_synproxy.c:175:36: error: left shift count >= width of type [-Werror=shift-count-overflow]
> 175 | *tcpipopts = (mss6 << 32) | (ttl << 24) | (wscale << 16) | mss4;
> | ^~
> xdp_synproxy.c: In function 'syncookie_open_bpf_maps':
> xdp_synproxy.c:289:28: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
> 289 | .map_ids = (__u64)map_ids,
> | ^
>
> Fix it.
>
> Fixes: fb5cd0ce70d4 ("selftests/bpf: Add selftests for raw syncookie helpers")
> Signed-off-by: Yang Jihong <yangjihong1@...wei.com>
Acked-by: Yonghong Song <yhs@...com>
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