lpm6: fix missing free

lpm6 autotests failed with the default alloc of 512M Memory.
While >=2500M was a workaround it became clear while debugging that it
had a leak.
One could see a lot of output like:
  LPM Test tests6[i]: FAIL
  LPM: LPM memory allocation failed

It turned out that in rte_lpm6_free
- lpm might not be freed if it didn't find a te (early return)
- lpm->rules_tbl was not freed ever

Fixes: 899d8bc9b3b5 ("lpm: make tailq fully local")

Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>

diff --git a/lib/librte_lpm/rte_lpm6.c b/lib/librte_lpm/rte_lpm6.c
index 6c2b293..eded772 100644 (file)
--- a/lib/librte_lpm/rte_lpm6.c
+++ b/lib/librte_lpm/rte_lpm6.c
@@ -277,15 +277,13 @@ rte_lpm6_free(struct rte_lpm6 *lpm)
                if (te->data == (void *) lpm)
                        break;
        }
-       if (te == NULL) {
-               rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
-               return;
-       }
 
-       TAILQ_REMOVE(lpm_list, te, next);
+       if (te != NULL)
+               TAILQ_REMOVE(lpm_list, te, next);
 
        rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
 
+       rte_free(lpm->rules_tbl);
        rte_free(lpm);
        rte_free(te);
 }