[PATCH v2] net/igc: fix segmentation fault in secondary dpdk-symmetric_mp

[zhichaox.zeng@intel.com]

From: Zhichao Zeng <zhichaox.zeng@intel.com>

In the secondary dpdk-symmetric_mp process, the "smp_port_init" was
skipped, which cause some function pointers not to be initialized,
and a segmentation fault occurred when calling these function pointers.

This patch assigns initial values to rx_pkt_burst, tx_pkt_burst
and tx_pkt_prepare pointers to avoid calling null function pointer.

Fixes: 66fde1b943eb ("net/igc: add skeleton")
Cc: alvinx.zhang@intel.com
Cc: stable@dpdk.org

Signed-off-by: Zhichao Zeng <zhichaox.zeng@intel.com>

---
v2:
remove unnecessary parameters, move declaration to relevant header file
---
 drivers/net/igc/igc_ethdev.c | 3 +++
 drivers/net/igc/igc_txrx.c   | 6 +++---
 drivers/net/igc/igc_txrx.h   | 4 ++++
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/net/igc/igc_ethdev.c b/drivers/net/igc/igc_ethdev.c
index b9933b395d..25fb91bfec 100644
--- a/drivers/net/igc/igc_ethdev.c
+++ b/drivers/net/igc/igc_ethdev.c
@@ -1234,6 +1234,9 @@ eth_igc_dev_init(struct rte_eth_dev *dev)
 	dev->rx_queue_count = eth_igc_rx_queue_count;
 	dev->rx_descriptor_status = eth_igc_rx_descriptor_status;
 	dev->tx_descriptor_status = eth_igc_tx_descriptor_status;
+	dev->rx_pkt_burst = igc_recv_pkts;
+	dev->tx_pkt_burst = igc_xmit_pkts;
+	dev->tx_pkt_prepare = eth_igc_prep_pkts;
 
 	/*
 	 * for secondary processes, we don't initialize any further as primary
diff --git a/drivers/net/igc/igc_txrx.c b/drivers/net/igc/igc_txrx.c
index e48d5df11a..753ac8a411 100644
--- a/drivers/net/igc/igc_txrx.c
+++ b/drivers/net/igc/igc_txrx.c
@@ -345,7 +345,7 @@ rx_desc_get_pkt_info(struct igc_rx_queue *rxq, struct rte_mbuf *rxm,
 	rxm->packet_type = rx_desc_pkt_info_to_pkt_type(pkt_info);
 }
 
-static uint16_t
+uint16_t
 igc_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 {
 	struct igc_rx_queue * const rxq = rx_queue;
@@ -1397,7 +1397,7 @@ eth_igc_rx_queue_setup(struct rte_eth_dev *dev,
 }
 
 /* prepare packets for transmit */
-static uint16_t
+uint16_t
 eth_igc_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
 		uint16_t nb_pkts)
 {
@@ -1604,7 +1604,7 @@ tx_desc_cksum_flags_to_olinfo(uint64_t ol_flags)
 	return tmp;
 }
 
-static uint16_t
+uint16_t
 igc_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
 {
 	struct igc_tx_queue * const txq = tx_queue;
diff --git a/drivers/net/igc/igc_txrx.h b/drivers/net/igc/igc_txrx.h
index 535108a868..a5240df9d7 100644
--- a/drivers/net/igc/igc_txrx.h
+++ b/drivers/net/igc/igc_txrx.h
@@ -49,6 +49,10 @@ void eth_igc_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
 	struct rte_eth_txq_info *qinfo);
 void eth_igc_vlan_strip_queue_set(struct rte_eth_dev *dev,
 			uint16_t rx_queue_id, int on);
+uint16_t igc_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
+uint16_t igc_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts);
+uint16_t eth_igc_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
+	uint16_t nb_pkts);
 #ifdef __cplusplus
 }
 #endif
-- 
2.25.1