Re: [PATCH net-next v2 2/2] net/smc: support ipv4 mapped ipv6 addr client for smc-r v2

[Halil Pasic <pasic@linux.ibm.com>]

On Mon, 9 Dec 2024 09:49:23 +0100
Wenjia Zhang <wenjia@linux.ibm.com> wrote:

> > Otherwise, the code below is reasonable.
> >        if (!(ini->smcr_version & SMC_V2) ||
> > +#if IS_ENABLED(CONFIG_IPV6)
> > +        (smc->clcsock->sk->sk_family == AF_INET6 &&
> > +         !ipv6_addr_v4mapped(&smc->clcsock->sk->sk_v6_rcv_saddr)) ||
> > +#endif
> >            !smc_clc_ueid_count() ||
> >            smc_find_rdma_device(smc, ini))
> >            ini->smcr_version &= ~SMC_V2;
> >   
> Ok, I got your point, a socket with an address family other than AF_INET 
> and AF_INET6 is already pre-filtered, so that such extra condition 
> checking for the smc->clcsock->sk->sk_family != AF_INET is not 
> necessary, right?
> 
> Would you like to send a new version? And feel free to use this in the 
> new version:
> 
> Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>

I believe we would like to have a v3 here. Also I'm not sure
checking on saddr is sufficient, but I didn't do my research on
that question yet.

Regards,
Halil