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List:       freebsd-arch
Subject:    change divert socket to use a sockaddr_div struct
From:       Nick Hibma <nick () van-laarhoven ! org>
Date:       2020-02-27 9:15:01
Message-ID: FDA3F6E5-5CB3-4A28-BE61-34A374886B9A () van-laarhoven ! org
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Folks,

We would like to use FIBs for routing, but currently cannot because the FIB is lost \
when the packet goes through a divert socket for processing. I've attached a patch \
that should fix this situation, and while there fix the limit of 7 characters for the \
interface name which some people got bitten by. This fix was suggested some time ago \
by Warner Losh.

I've changed the sockaddr_in to a sockaddr_di struct to pass the FIB number and the \
complete interface, and other info in and out. But this seems to lead to memory \
corruption. Perhaps someone who knows the API can tell me where I should look for \
memory corruption issues, because this patch causes random crashes. I assume it's \
because of overwriting random memory.

Thanks in advance.

Nick Hibma
nick@van-laarhoven.org

-- Open Source: We stand on the shoulders of giants.


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