Re: [PATCH net] netfilter: nf_conntrack_sip: fix the ct_sip_parse_numerical_param() return value.

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On Fri, Jun 23, 2023 at 11:23:46AM +0000, Gavrilov Ilia wrote:
> From: "Ilia.Gavrilov" <Ilia.Gavrilov@xxxxxxxxxxx>
> 
> ct_sip_parse_numerical_param() returns only 0 or 1 now.
> But process_register_request() and process_register_response() imply
> checking for a negative value if parsing of a numerical header parameter
> failed.
> The invocation in nf_nat_sip() looks correct:
>  	if (ct_sip_parse_numerical_param(...) > 0 &&
>  	    ...) { ... }
> 
> Make the return value of the function ct_sip_parse_numerical_param()
> a tristate to fix all the cases
> a) return 1 if value is found; *val is set
> b) return 0 if value is not found; *val is unchanged
> c) return -1 on error; *val is undefined

Applied to nf.git



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