New upstream version 18.05

[deb_dpdk.git] / examples / ip_pipeline / kni.c

diff --git a/examples/ip_pipeline/kni.c b/examples/ip_pipeline/kni.c
new file mode 100644 (file)
index 0000000..7e5ff05
--- /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