[dpdk-dev] [RFC PATCH 1/2] librte_pmd_pcap: Add support for port hotplug

[Tetsuya Mukawa <mukawa@igel.co.jp>]

This patch adds finalization code to free resources allocated by the
PMD.

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
---
 lib/librte_pmd_pcap/rte_eth_pcap.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/lib/librte_pmd_pcap/rte_eth_pcap.c b/lib/librte_pmd_pcap/rte_eth_pcap.c
index f12d1e7..90fc065 100644
--- a/lib/librte_pmd_pcap/rte_eth_pcap.c
+++ b/lib/librte_pmd_pcap/rte_eth_pcap.c
@@ -499,6 +499,13 @@ static struct eth_dev_ops ops = {
 		.stats_reset = eth_stats_reset,
 };
 
+static struct eth_driver rte_pcap_pmd = {
+	.pci_drv = {
+		.name = "rte_pcap_pmd",
+		.drv_flags = RTE_PCI_DRV_DETACHABLE,
+	},
+};
+
 /*
  * Function handler that opens the pcap file for reading a stores a
  * reference of it for use it later on.
@@ -743,6 +750,7 @@ rte_pmd_init_internals(const char *name, const unsigned nb_rx_queues,
 	(*eth_dev)->data = data;
 	(*eth_dev)->dev_ops = &ops;
 	(*eth_dev)->pci_dev = pci_dev;
+	(*eth_dev)->driver = &rte_pcap_pmd;
 
 	return 0;
 
@@ -927,10 +935,33 @@ rte_pmd_pcap_devinit(const char *name, const char *params)
 
 }
 
+static int
+rte_pmd_pcap_devclose(const char *name, const char *params __rte_unused)
+{
+	struct rte_eth_dev *eth_dev = NULL;
+
+	RTE_LOG(INFO, PMD, "Closing pcap ethdev on numa socket %u\n",
+			rte_socket_id());
+
+	/* reserve an ethdev entry */
+	eth_dev = rte_eth_dev_allocated(name);
+	if (eth_dev == NULL)
+		return -1;
+
+	rte_free(eth_dev->data->dev_private);
+	rte_free(eth_dev->data);
+	rte_free(eth_dev->pci_dev);
+
+	rte_eth_dev_free(name);
+
+	return 0;
+}
+
 static struct rte_driver pmd_pcap_drv = {
 	.name = "eth_pcap",
 	.type = PMD_VDEV,
 	.init = rte_pmd_pcap_devinit,
+	.close = rte_pmd_pcap_devclose,
 };
 
 PMD_REGISTER_DRIVER(pmd_pcap_drv);
-- 
1.9.1