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lpm6: fix possible garbage in lookup

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Fix issue reported by clang scan-build

Value of pointer tbl_next was uninitialized. When function lookup_step()
take else branch it may provide garbage into tbl = tbl_next;

Fixes: 5c510e13a9cb ("lpm: add IPv6 support")

Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod@intel.com>
This commit is contained in:
Daniel Mrzyglod 2016-04-27 17:07:53 +02:00 committed by Thomas Monjalon
parent 6226aa5672
commit 9199cd6d51
1 changed files with 2 additions and 2 deletions

4
lib/librte_lpm/rte_lpm6.c

@ -601,7 +601,7 @@ int
rte_lpm6_lookup(const struct rte_lpm6 *lpm, uint8_t *ip, uint8_t *next_hop)
{
const struct rte_lpm6_tbl_entry *tbl;
const struct rte_lpm6_tbl_entry *tbl_next;
const struct rte_lpm6_tbl_entry *tbl_next = NULL;
int status;
uint8_t first_byte;
uint32_t tbl24_index;
@ -636,7 +636,7 @@ rte_lpm6_lookup_bulk_func(const struct rte_lpm6 *lpm,
{
unsigned i;
const struct rte_lpm6_tbl_entry *tbl;
const struct rte_lpm6_tbl_entry *tbl_next;
const struct rte_lpm6_tbl_entry *tbl_next = NULL;
uint32_t tbl24_index;
uint8_t first_byte, next_hop;
int status;