1 files changed, 175 insertions, 0 deletions
diff --git a/examples/ip_pipeline/kni.c b/examples/ip_pipeline/kni.c
new file mode 100644
index 00000000..7e5ff054
--- /dev/null
+++ b/examples/ip_pipeline/kni.c
@@ -0,0 +1,175 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2018 Intel Corporation
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <rte_ethdev.h>
+#include <rte_bus_pci.h>
+#include <rte_string_fns.h>
+
+#include "kni.h"
+#include "mempool.h"
+#include "link.h"
+
+static struct kni_list kni_list;
+
+#ifndef KNI_MAX
+#define KNI_MAX                                            16
+#endif
+
+int
+kni_init(void)
+{
+	TAILQ_INIT(&kni_list);
+
+#ifdef RTE_LIBRTE_KNI
+	rte_kni_init(KNI_MAX);
+#endif
+
+	return 0;
+}
+
+struct kni *
+kni_find(const char *name)
+{
+	struct kni *kni;
+
+	if (name == NULL)
+		return NULL;
+
+	TAILQ_FOREACH(kni, &kni_list, node)
+		if (strcmp(kni->name, name) == 0)
+			return kni;
+
+	return NULL;
+}
+
+#ifndef RTE_LIBRTE_KNI
+
+struct kni *
+kni_create(const char *name __rte_unused,
+	struct kni_params *params __rte_unused)
+{
+	return NULL;
+}
+
+void
+kni_handle_request(void)
+{
+	return;
+}
+
+#else
+
+static int
+kni_config_network_interface(uint16_t port_id, uint8_t if_up)
+{
+	int ret = 0;
+
+	if (!rte_eth_dev_is_valid_port(port_id))
+		return -EINVAL;
+
+	ret = (if_up) ?
+		rte_eth_dev_set_link_up(port_id) :
+		rte_eth_dev_set_link_down(port_id);
+
+	return ret;
+}
+
+static int
+kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
+{
+	int ret;
+
+	if (!rte_eth_dev_is_valid_port(port_id))
+		return -EINVAL;
+
+	if (new_mtu > ETHER_MAX_LEN)
+		return -EINVAL;
+
+	/* Set new MTU */
+	ret = rte_eth_dev_set_mtu(port_id, new_mtu);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+struct kni *
+kni_create(const char *name, struct kni_params *params)
+{
+	struct rte_eth_dev_info dev_info;
+	struct rte_kni_conf kni_conf;
+	struct rte_kni_ops kni_ops;
+	struct kni *kni;
+	struct mempool *mempool;
+	struct link *link;
+	struct rte_kni *k;
+	const struct rte_pci_device *pci_dev;
+	const struct rte_bus *bus = NULL;
+
+	/* Check input params */
+	if ((name == NULL) ||
+		kni_find(name) ||
+		(params == NULL))
+		return NULL;
+
+	mempool = mempool_find(params->mempool_name);
+	link = link_find(params->link_name);
+	if ((mempool == NULL) ||
+		(link == NULL))
+		return NULL;
+
+	/* Resource create */
+	rte_eth_dev_info_get(link->port_id, &dev_info);
+
+	memset(&kni_conf, 0, sizeof(kni_conf));
+	snprintf(kni_conf.name, RTE_KNI_NAMESIZE, "%s", name);
+	kni_conf.force_bind = params->force_bind;
+	kni_conf.core_id = params->thread_id;
+	kni_conf.group_id = link->port_id;
+	kni_conf.mbuf_size = mempool->buffer_size;
+	if (dev_info.device)
+		bus = rte_bus_find_by_device(dev_info.device);
+	if (bus && !strcmp(bus->name, "pci")) {
+		pci_dev = RTE_DEV_TO_PCI(dev_info.device);
+		kni_conf.addr = pci_dev->addr;
+		kni_conf.id = pci_dev->id;
+	}
+
+	memset(&kni_ops, 0, sizeof(kni_ops));
+	kni_ops.port_id = link->port_id;
+	kni_ops.config_network_if = kni_config_network_interface;
+	kni_ops.change_mtu = kni_change_mtu;
+
+	k = rte_kni_alloc(mempool->m, &kni_conf, &kni_ops);
+	if (k == NULL)
+		return NULL;
+
+	/* Node allocation */
+	kni = calloc(1, sizeof(struct kni));
+	if (kni == NULL)
+		return NULL;
+
+	/* Node fill in */
+	strlcpy(kni->name, name, sizeof(kni->name));
+	kni->k = k;
+
+	/* Node add to list */
+	TAILQ_INSERT_TAIL(&kni_list, kni, node);
+
+	return kni;
+}
+
+void
+kni_handle_request(void)
+{
+	struct kni *kni;
+
+	TAILQ_FOREACH(kni, &kni_list, node)
+		rte_kni_handle_request(kni->k);
+}
+
+#endif