[PATCH] examples/l3fwd: fix issue with MTU set on event mode

[Nithin Dabilpuram <ndabilpuram@marvell.com>]

MTU configuration is missing for ethdev when using eventmode
when user provides it via "--max-pkt-len" config. It is only
done in poll mode setup. Fix the event mode setup code to
do the same.

Fixes: 1bb4a528c41f ("ethdev: fix max Rx packet length")
Cc: ferruh.yigit@intel.com
Cc: stable@dpdk.org

Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
---
 examples/l3fwd/l3fwd.h       | 5 +++++
 examples/l3fwd/l3fwd_event.c | 6 ++++++
 examples/l3fwd/main.c        | 4 ++--
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/examples/l3fwd/l3fwd.h b/examples/l3fwd/l3fwd.h
index ad39496..b0bfdcc 100644
--- a/examples/l3fwd/l3fwd.h
+++ b/examples/l3fwd/l3fwd.h
@@ -107,6 +107,8 @@ extern struct lcore_conf lcore_conf[RTE_MAX_LCORE];
 
 extern struct parm_cfg parm_config;
 
+extern uint32_t max_pkt_len;
+
 /* Send burst of packets on an output interface */
 static inline int
 send_burst(struct lcore_conf *qconf, uint16_t n, uint16_t port)
@@ -193,6 +195,9 @@ is_valid_ipv4_pkt(struct rte_ipv4_hdr *pkt, uint32_t link_len)
 int
 init_mem(uint16_t portid, unsigned int nb_mbuf);
 
+int config_port_max_pkt_len(struct rte_eth_conf *conf,
+			    struct rte_eth_dev_info *dev_info);
+
 /* Function pointers for LPM, EM or FIB functionality. */
 void
 setup_lpm(const int socketid);
diff --git a/examples/l3fwd/l3fwd_event.c b/examples/l3fwd/l3fwd_event.c
index 7a40129..e72add8 100644
--- a/examples/l3fwd/l3fwd_event.c
+++ b/examples/l3fwd/l3fwd_event.c
@@ -73,6 +73,12 @@ l3fwd_eth_dev_port_setup(struct rte_eth_conf *port_conf)
 			rte_panic("Error during getting device (port %u) info:"
 				  "%s\n", port_id, strerror(-ret));
 
+		ret = config_port_max_pkt_len(&local_port_conf, &dev_info);
+		if (ret != 0)
+			rte_exit(EXIT_FAILURE,
+				"Invalid max packet length: %u (port %u)\n",
+				max_pkt_len, port_id);
+
 		if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE)
 			local_port_conf.txmode.offloads |=
 						RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
index a629198..6585c8b 100644
--- a/examples/l3fwd/main.c
+++ b/examples/l3fwd/main.c
@@ -135,7 +135,7 @@ static struct rte_eth_conf port_conf = {
 	},
 };
 
-static uint32_t max_pkt_len;
+uint32_t max_pkt_len;
 
 static struct rte_mempool *pktmbuf_pool[RTE_MAX_ETHPORTS][NB_SOCKETS];
 static struct rte_mempool *vector_pool[RTE_MAX_ETHPORTS];
@@ -1136,7 +1136,7 @@ eth_dev_get_overhead_len(uint32_t max_rx_pktlen, uint16_t max_mtu)
 	return overhead_len;
 }
 
-static int
+int
 config_port_max_pkt_len(struct rte_eth_conf *conf,
 		struct rte_eth_dev_info *dev_info)
 {
-- 
2.8.4