Unable to compile BBRv3 in 32-bit arch cpu

[Chitose Ikeda]

Compiling BBR v3 on a 32-bit CPU will result in errors like this
arm:
ERROR: modpost: "__aeabi_uldivmod" [net/ipv4/tcp_bbr.ko] undefined!
ERROR: modpost: "__aeabi_ldivmod" [net/ipv4/tcp_bbr.ko] undefined!

x86, mips:

ERROR: modpost: "__udivdi3" [net/ipv4/tcp_bbr.ko] undefined!
ERROR: modpost: "__divdi3" [net/ipv4/tcp_bbr.ko] undefined!

Test with GCC 13 and GCC 14

For details, please refer to: https://github.com/openwrt/openwrt/actions/runs/10916627221

[Neal Cardwell]

Hi,

I see someone has proposed a patch for this (perhaps you? if so, thanks!):

  https://github.com/google/bbr/pull/11

Let's continue the discussion there.

Thanks!

neal

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