app/testpmd: fix multicast address pool leak

A multicast address pool is allocated for a port when
using mcast_addr testpmd commands.

When closing a port or stopping testpmd, this pool was
not freed, resulting in a leak.
This issue has been caught using ASan.

Free this pool when closing the port.

Error info as following:
ERROR: LeakSanitizer: detected memory leaksDirect leak of
       192 byte(s)
0 0x7f6a2e0aeffe in __interceptor_realloc
	(/lib/x86_64-linux-gnu/libasan.so.5+0x10dffe)
1 0x565361eb340f in mcast_addr_pool_extend
	../app/test-pmd/config.c:5162
2 0x565361eb3556 in mcast_addr_pool_append
	../app/test-pmd/config.c:5180
3 0x565361eb3aae in mcast_addr_add
	../app/test-pmd/config.c:5243

Fixes: 8fff667578a7 ("app/testpmd: new command to add/remove multicast MAC addresses")
Cc: stable@dpdk.org
Signed-off-by: Ke Zhang <ke1x.zhang@intel.com>
Acked-by: Yuying Zhang <yuying.zhang@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@xilinx.com>

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 72d2606..d6caa1f 100644 (file)
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -6070,6 +6070,25 @@ mcast_addr_pool_remove(struct rte_port *port, uint32_t addr_idx)
                sizeof(struct rte_ether_addr) * (port->mc_addr_nb - addr_idx));
 }
 
+int
+mcast_addr_pool_destroy(portid_t port_id)
+{
+       struct rte_port *port;
+
+       if (port_id_is_invalid(port_id, ENABLED_WARN) ||
+           port_id == (portid_t)RTE_PORT_ALL)
+               return -EINVAL;
+       port = &ports[port_id];
+
+       if (port->mc_addr_nb != 0) {
+               /* free the pool of multicast addresses. */
+               free(port->mc_addr_pool);
+               port->mc_addr_pool = NULL;
+               port->mc_addr_nb = 0;
+       }
+       return 0;
+}
+
 static int
 eth_port_multicast_addr_list_set(portid_t port_id)
 {

diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 4d51eb9..9d6175e 100644 (file)
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -3237,6 +3237,7 @@ close_port(portid_t pid)
                }
 
                if (is_proc_primary()) {
+                       mcast_addr_pool_destroy(pi);
                        port_flow_flush(pi);
                        port_flex_item_flush(pi);
                        port_action_handle_flush(pi);

diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index 6693813..dd34b02 100644 (file)
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -991,6 +991,7 @@ int port_flow_create(portid_t port_id,
 int port_action_handle_query(portid_t port_id, uint32_t id);
 void update_age_action_context(const struct rte_flow_action *actions,
                     struct port_flow *pf);
+int mcast_addr_pool_destroy(portid_t port_id);
 int port_flow_destroy(portid_t port_id, uint32_t n, const uint32_t *rule);
 int port_flow_flush(portid_t port_id);
 int port_flow_dump(portid_t port_id, bool dump_all,