[dpdk-dev] [PATCH v2] lpm6: make IPv6 addresses immutable

[Andrzej Ostruszka <aostruszka@marvell.com>]

None of the public functions modify IPv6 address passed.  So their
parameters are made const - with the exception of bulk functions.
This exception is due to compatibility problems - some compilers report
problems with const-casting of array of arrays.

Previously only lookup and add were updated to have addresses passed as
const so I'm adding this fixline.

Fixes: d82927d2f81d ("lpm6: make IPv6 address immutable")
Cc: stephen@networkplumber.org

Signed-off-by: Andrzej Ostruszka <aostruszka@marvell.com>
---

V2 changes:
-----------
* reverted changes to the bulk functions and modified commit message to
  reflect that

---
 lib/librte_lpm/rte_lpm6.c | 6 +++---
 lib/librte_lpm/rte_lpm6.h | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/lib/librte_lpm/rte_lpm6.c b/lib/librte_lpm/rte_lpm6.c
index d515600f1..1047efa8a 100644
--- a/lib/librte_lpm/rte_lpm6.c
+++ b/lib/librte_lpm/rte_lpm6.c
@@ -1019,8 +1019,8 @@ rte_lpm6_lookup_bulk_func(const struct rte_lpm6 *lpm,
  * Look for a rule in the high-level rules table
  */
 int
-rte_lpm6_is_rule_present(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
-		uint32_t *next_hop)
+rte_lpm6_is_rule_present(struct rte_lpm6 *lpm, const uint8_t *ip, uint8_t depth,
+			 uint32_t *next_hop)
 {
 	uint8_t masked_ip[RTE_LPM6_IPV6_ADDR_SIZE];
 
@@ -1290,7 +1290,7 @@ remove_tbl(struct rte_lpm6 *lpm, struct rte_lpm_tbl8_hdr *tbl_hdr,
  * Deletes a rule
  */
 int
-rte_lpm6_delete(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth)
+rte_lpm6_delete(struct rte_lpm6 *lpm, const uint8_t *ip, uint8_t depth)
 {
 	uint8_t masked_ip[RTE_LPM6_IPV6_ADDR_SIZE];
 	struct rte_lpm6_rule lsp_rule_obj;
diff --git a/lib/librte_lpm/rte_lpm6.h b/lib/librte_lpm/rte_lpm6.h
index 042991f8c..f96f3372e 100644
--- a/lib/librte_lpm/rte_lpm6.h
+++ b/lib/librte_lpm/rte_lpm6.h
@@ -113,8 +113,8 @@ rte_lpm6_add(struct rte_lpm6 *lpm, const uint8_t *ip, uint8_t depth,
  *   1 if the rule exists, 0 if it does not, a negative value on failure
  */
 int
-rte_lpm6_is_rule_present(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
-		uint32_t *next_hop);
+rte_lpm6_is_rule_present(struct rte_lpm6 *lpm, const uint8_t *ip, uint8_t depth,
+			 uint32_t *next_hop);
 
 /**
  * Delete a rule from the LPM table.
@@ -129,7 +129,7 @@ rte_lpm6_is_rule_present(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
  *   0 on success, negative value otherwise
  */
 int
-rte_lpm6_delete(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth);
+rte_lpm6_delete(struct rte_lpm6 *lpm, const uint8_t *ip, uint8_t depth);
 
 /**
  * Delete a rule from the LPM table.
-- 
2.17.1