af_packet: fix possible memory leak

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

Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod@intel.com>
Acked-by: Michal Jastrzebski <michalx.k.jastrzebski@intel.com>
Acked-by: John W. Linville <linville@tuxdriver.com>

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 236749b98879ca1f59d99944b1b523bebb13db66..755780a10af537e98b8b6280166bada53588ddd2 100644 (file)
--- 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)