net/mrvl: fix mbuf to bpool lookup

Since in DPDK 17.11 port type was changed from uint8_t to uint16_t
the MBUF_INVALID_PORT value became 0xffff but in mrvl_tx_pkt_burst()
when trying to lookup bpool using mbuf port, we check if the port
is invalid according to value 0xff. This causes segmentation fault.

Solution: since the valid port value cannot exceed RTE_MAX_ETHPORTS
(size of bpool lookup table) any other values consider as invalid so
the packet should be returned to DPDK pool.

Fixes: afb4d0d0bf91 ("net/mrvl: add Rx/Tx support")
Cc: stable@dpdk.org
Signed-off-by: Natalie Samsonov <nsamsono@marvell.com>

diff --git a/drivers/net/mrvl/mrvl_ethdev.c b/drivers/net/mrvl/mrvl_ethdev.c
index 3b60f91..705c4bd 100644 (file)
--- a/drivers/net/mrvl/mrvl_ethdev.c
+++ b/drivers/net/mrvl/mrvl_ethdev.c
@@ -2096,8 +2096,9 @@ mrvl_tx_pkt_burst(void *txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
                sq->ent[sq->head].buff.addr =
                        rte_mbuf_data_iova_default(mbuf);
                sq->ent[sq->head].bpool =
-                       (unlikely(mbuf->port == 0xff || mbuf->refcnt > 1)) ?
-                        NULL : mrvl_port_to_bpool_lookup[mbuf->port];
+                       (unlikely(mbuf->port >= RTE_MAX_ETHPORTS ||
+                        mbuf->refcnt > 1)) ? NULL :
+                        mrvl_port_to_bpool_lookup[mbuf->port];
                sq->head = (sq->head + 1) & MRVL_PP2_TX_SHADOWQ_MASK;
                sq->size++;
 
@@ -2430,6 +2431,7 @@ rte_pmd_mrvl_probe(struct rte_vdev_device *vdev)
        }
 
        memset(mrvl_port_bpool_size, 0, sizeof(mrvl_port_bpool_size));
+       memset(mrvl_port_to_bpool_lookup, 0, sizeof(mrvl_port_to_bpool_lookup));
 
        mrvl_lcore_first = RTE_MAX_LCORE;
        mrvl_lcore_last = 0;