[dpdk-dev] [PATCH] af_packet: fix possible memory leak

[Daniel Mrzyglod]

In rte_pmd_init_internals, we are mapping memory but not released
if error occure it could produce memoryleak.
Add unmmap function to release memory.

Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod at intel.com>
---
 lib/librte_pmd_af_packet/rte_eth_af_packet.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/librte_pmd_af_packet/rte_eth_af_packet.c 
b/lib/librte_pmd_af_packet/rte_eth_af_packet.c
index 236749b..93e6b6b 100644
--- a/lib/librte_pmd_af_packet/rte_eth_af_packet.c
+++ b/lib/librte_pmd_af_packet/rte_eth_af_packet.c
@@ -481,6 +481,11 @@ rte_pmd_init_internals(const char *name,
        if (*internals == NULL)
                goto error;

+       for (q = 0; q < nb_queues; q++) {
+               (*internals)->rx_queue[q].map = MAP_FAILED;
+               (*internals)->tx_queue[q].map = MAP_FAILED;
+       }
+
        req = &((*internals)->req);

        req->tp_block_size = blocksize;
@@ -682,6 +687,8 @@ error:
                rte_free(pci_dev);
        if (*internals) {
                for (q = 0; q < nb_queues; q++) {
+                       munmap((*internals)->rx_queue[q].map,
+                                                       2 * req->tp_block_size 
* req->tp_block_nr);
                        if ((*internals)->rx_queue[q].rd)
                                rte_free((*internals)->rx_queue[q].rd);
                        if ((*internals)->tx_queue[q].rd)
-- 
2.1.0