[dpdk-dev] [PATCH v2 2/2] lib/lpm:fix an initialization issue of valid_group in the delete_depth_small()
Bruce Richardson
bruce.richardson at intel.com
Fri Oct 30 15:24:25 CET 2015
On Fri, Oct 30, 2015 at 02:22:27PM +0000, Bruce Richardson wrote:
> On Fri, Oct 30, 2015 at 09:14:39PM +0800, Jijiang Liu wrote:
>
> Title can be shortened to: "lpm: fix initialization of valid_group field"
>
> > Fixes an initialization issue of 'valid_group' in the delete_depth_small function.
> >
> > In this function, use new rte_lpm_tbl8_entry we call A to replace the old rte_lpm_tbl8_entry. But the valid_group do not set VALID, so it
> > will be INVALID.
> >
> > Then when adding a new route which depth is > 24,the tbl8_alloc() function will search the rte_lpm_tbl8_entrys to find INVALID
> > valid_group, and it will return the A to the add_depth_big function, so A's data is overridden.
> >
>
> Not sure this message is entirely clear.
> How about:
> When adding an entry to a tbl8, the .valid_group field should always be set,
> so that future adds do not accidently find and use this table, thinking it is
> currently invalid, i.e. unused, and thereby overwrite existing entries.
>
> > Signed-off-by: NaNa <nana.nn at alibaba-inc.com>
> >
Assuming we get a little cleanup on commit title and log message (Thomas, perhaps
just a rewrite on commit?):
Acked-by: Bruce Richardson <bruce.richardson at intel.com>
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