Re: Generic Netlink HOW-TO based on Jamal's original doc

[Randy Dunlap <randy.dunlap@oracle.com>]

Thomas Graf wrote:
> * Randy Dunlap <randy.dunlap@oracle.com> 2006-11-10 14:49
>>> I thought I chose GENL_NAMESIZ wisely but to be sure I checked
>>> with Mr. Alignment himself, Arnaldo:
>> Hm, looks OK to me.  Am I missing something?
> 
> It is OK, I was merely trying to prove it :-)
> 
>>> struct genl_family {
>>>        unsigned int               id;                   /* 0(0)     4 */
>>>        unsigned int               hdrsize;              /* 4(0)     4 */
>>>        char                       name[16];             /* 8(0)    16 */
>>>        unsigned int               version;              /* 24(0)     4 */
>>>        unsigned int               maxattr;              /* 28(0)     4 */
>>>        /* ---------- cacheline 1 boundary ---------- */
>>>        struct nlattr * *          attrbuf;              /* 32(0)     4 */
>>>        struct list_head           ops_list;             /* 36(0)     8 */
>>>        struct list_head           family_list;          /* 44(0)     8 */
>>> }; /* size: 52 */
>> How about field size issues?  Usually for int's etc. that are in
>> userspace interfaces, we use __u32 etc.
> 
> This is kernel side only, struct genl_family lives in net/genetlink.h
> and is not exported to userspace.

OK, thanks for the clarifications.

-- 
~Randy