Re: [Qemu-devel] [PATCH] slirp: Add IPv6 support to the TFTP code

[Thomas Huth]

On 16.02.2016 11:30, Samuel Thibault wrote:
> Hello,
> 
> Thanks for working on it :)
> 
> Thomas Huth, on Tue 16 Feb 2016 09:47:38 +0100, wrote:
>> -static int tftp_session_allocate(Slirp *slirp, struct tftp_t *tp)
>> +static int tftp_session_allocate(struct sockaddr_storage *srcsas, Slirp 
>> *slirp,
>> +                                 struct tftp_t *tp)
> 
> slirp is usually the first parameter, it'd probably be better to keep
> this habit.

Ok, I don't have a preference here, so I'll change it.

>> -static int tftp_session_find(Slirp *slirp, struct tftp_t *tp)
>> +static int tftp_session_find(struct sockaddr_storage *srcsas, Slirp *slirp,
>> +                             struct tftp_t *tp)
> 
> ditto.
> 
>> +static void tftp_udp_output(struct tftp_session *spt, struct mbuf *m,
>> +                            struct tftp_t *recv_tp)
>> +{
>> +    if (spt->client_addr.ss_family == AF_INET6) {
>> +        struct sockaddr_in6 sa6, da6;
>> +
>> +        memcpy(&sa6.sin6_addr, spt->slirp->vhost_addr6.s6_addr, 16);
> 
> Why not simply sa6.sin6_addr = spt->slirp->vhost_addr6?
> 
> The compiler will optimize the structure assignment as an inline copy or
> memcpy call as appropriate.

That makes sense, too, I'll change it.

Thanks for the review!

 Thomas