* [dpdk-dev] rte_lpm_add in librte_lpm
@ 2014-09-06 0:14 Jan Sacha
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From: Jan Sacha @ 2014-09-06 0:14 UTC (permalink / raw)
To: dev
Hi,
I've been playing with DPDK and I got some crashes in the LPM module. As
far as I know, this problem has not been reported yet. These crashes
happened in DPDK 1.7.0 and 1.6.0r2 (I didn't check other versions) when
I added new LPM routes.
In the lib/librte_lpm/rte_lpm.c file, line 399 (add_depth_small
function), there is the following condition:
if (!lpm->tbl24[i].valid || (lpm->tbl24[i].ext_entry == 0 &&
lpm->tbl24[i].depth <= depth))
If the new route has a lower depth than an existing non-extended entry,
this condition is not met. We then skip to line 418, where we assume the
entry is extended and use an uninitialized index. Is this a bug?
Thanks,
Jan
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