Hi Dave,
1) Remove "void *sysctl;" from ipv6_devconf, move it into
inet6_dev ie. "void *cnf_sysctl;" update all code users.
There is one problem with this that I am not able to figure out, perhaps I am
overlooking it. addrconf_sysctl_register() gets called for ipv6_devconf_dflt,
but there is no inet6_dev for this configuration, so is it possible to move the
sysctl up (there is no 'up' :-). I don't want to create a dummy inet6_dev for
this. One way is to embed the actual config structure as follows :
struct ipv6_devconf {
void *sysctl;
struct {
forwarding;
hop_limit;
...
} u;
};
and follow it up with #defines for all the elements, etc. Then I can use
sizeof(ipv6_devconf.u) without this problem. Another way to do this is using
pointer arithmetic :
RTA_PUT(skb, IFLA_INET6_CONF, &idev->cnf.sysctl-&idev->cnf.forwarding,
&idev->cnf);
(guess you may not like it based on your statement "pointers in it which makes
usage sloppy").
I also noticed there is no sysctl_register for ipv6_devconf, but there is a
unregister for that conf. Is that correct ?
2) Move "struct ipv6_devconf" into some linux/*.h ipv6 header
usable by users. Use an existing one if possible. Then
make sure net/if_inet6.h includes this thing.
The only two ipv6 specific files in linux are ipv6.h and ipv6_route.h, neither
are appropriate for sysctl stuff I think. So should I create a new file like the
one for ipv4_devconf exists in inetdevice.h ?
3) Change "int" members of struct "ipv6_devconf" to "s32".
All members (except use_tempaddr) seem to be >=0, should I change the definition
to __u32 instead ? I am OK either way, just wondering which is the right way to
do this.
Thanks,
- KK
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