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vr_dpdk_interface.c
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vr_dpdk_interface.c
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/*
* Copyright (C) 2014 Semihalf.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* vr_dpdk_interface.c -- vRouter interface callbacks
*
*/
#include "vr_dpdk.h"
#include "vr_dpdk_netlink.h"
#include "vr_dpdk_usocket.h"
#include "vr_dpdk_virtio.h"
#include <rte_errno.h>
#include <rte_ethdev.h>
#include <rte_ip_frag.h>
#include <rte_ip.h>
#include <rte_port_ethdev.h>
#include <rte_eth_af_packet.h>
/*
* dpdk_virtual_if_add - add a virtual (virtio) interface to vrouter.
* Returns 0 on success, < 0 otherwise.
*/
static int
dpdk_virtual_if_add(struct vr_interface *vif)
{
int ret;
uint16_t nrxqs, ntxqs;
RTE_LOG(INFO, VROUTER, "Adding vif %u (gen. %u) virtual device %s\n",
vif->vif_idx, vif->vif_gen, vif->vif_name);
nrxqs = vr_dpdk_virtio_nrxqs(vif);
/* virtio TX is thread safe, so we assign TX queue to each lcore */
ntxqs = (uint16_t)-1;
ret = vr_dpdk_lcore_if_schedule(vif, vr_dpdk_lcore_least_used_get(),
nrxqs, &vr_dpdk_virtio_rx_queue_init,
ntxqs, &vr_dpdk_virtio_tx_queue_init);
if (ret) {
return ret;
}
/*
* When something goes wrong, vr_netlink_uvhost_vif_add() returns
* non-zero value. Then we return this value here. It is handled by
* dp-core and dpdk_virtual_if_del() is called, so there is no need
* to do it manually here.
*
* Check dp-core/vf_interface.c:eth_drv_add() for reference.
*/
return vr_netlink_uvhost_vif_add(vif->vif_name, vif->vif_idx,
nrxqs, ntxqs);
}
/*
* dpdk_virtual_vlan_if_add - add a virtual VLAN interface to vRouter.
* Returns 0 on success, < 0 otherwise.
*/
static int
dpdk_virtual_vlan_if_add(struct vr_interface *vif)
{
RTE_LOG(INFO, VROUTER, "Adding vif %u (gen. %u) virtual VLAN(o/i) %u/%u device %s\n",
vif->vif_idx, vif->vif_gen, vif->vif_ovlan_id, vif->vif_vlan_id,
vif->vif_name);
RTE_LOG(INFO, VROUTER, " parent vif %u device %s\n",
vif->vif_parent->vif_idx, vif->vif_parent->vif_name);
return 0;
}
/*
* dpdk_virtual_if_del - deletes a virtual (virtio) interface from vrouter.
* Returns 0 on success, -1 otherwise.
*/
static int
dpdk_virtual_if_del(struct vr_interface *vif)
{
int ret;
RTE_LOG(INFO, VROUTER, "Deleting vif %u virtual device\n",
vif->vif_idx);
vr_dpdk_lcore_if_unschedule(vif);
ret = vr_netlink_uvhost_vif_del(vif->vif_idx);
if (ret) {
RTE_LOG(ERR, VROUTER, "Error deleting vif %u virtual device %s\n",
vif->vif_idx, vif->vif_name);
}
return ret;
}
/*
* dpdk_virtual_vlan_if_del - deletes a virtual VLAN interface from vRouter.
* Returns 0 on success, < 0 otherwise.
*/
static int
dpdk_virtual_vlan_if_del(struct vr_interface *vif)
{
RTE_LOG(INFO, VROUTER, "Deleting vif %u virtual VLAN(o/i) %u/%u device\n",
vif->vif_idx, vif->vif_ovlan_id, vif->vif_vlan_id);
return 0;
}
static inline void
dpdk_dbdf_to_pci(unsigned int dbdf,
struct rte_pci_addr *address)
{
address->domain = (dbdf >> 16);
address->bus = (dbdf >> 8) & 0xff;
address->devid = (dbdf >> 3) & 0x1f;
address->function = (dbdf & 0x7);
return;
}
static inline unsigned
dpdk_pci_to_dbdf(struct rte_pci_addr *address)
{
return address->domain << 16
| address->bus << 8
| address->devid
| address->function;
}
/* mirrors the function used in bonding */
static inline uint8_t
dpdk_find_port_id_by_pci_addr(const struct rte_pci_addr *addr)
{
uint8_t i;
struct rte_pci_addr *eth_pci_addr;
for (i = 0; i < rte_eth_dev_count(); i++) {
if (rte_eth_devices[i].pci_dev == NULL)
continue;
eth_pci_addr = &(rte_eth_devices[i].pci_dev->addr);
if (addr->bus == eth_pci_addr->bus &&
addr->devid == eth_pci_addr->devid &&
addr->domain == eth_pci_addr->domain &&
addr->function == eth_pci_addr->function) {
return i;
}
}
return VR_DPDK_INVALID_PORT_ID;
}
static inline void
dpdk_find_pci_addr_by_port(struct rte_pci_addr *addr, uint8_t port_id)
{
rte_memcpy(addr, &rte_eth_devices[port_id].pci_dev->addr, sizeof(struct rte_pci_addr));
}
static inline void
dpdk_set_hw_vlan_filter_strip(uint32_t port_id, struct vr_interface *vif)
{
uint32_t i, ret;
uint8_t *port_id_ptr;
int port_num = 0;
struct vr_dpdk_ethdev *ethdev = &vr_dpdk.ethdevs[port_id];
port_id_ptr = (ethdev->ethdev_nb_slaves == -1)?
ðdev->ethdev_port_id:ethdev->ethdev_slaves;
do {
/*
* TODO: vf_lcore_id check for SR-IOV VF should be a per-interface
* check to handle the case where a bond has a VF and a PF in it.
*/
if ((vr_dpdk.vlan_tag != VLAN_ID_INVALID) && vr_dpdk.vf_lcore_id) {
ret = rte_eth_dev_set_vlan_offload(*port_id_ptr, ETH_VLAN_FILTER_OFFLOAD);
if (ret) {
RTE_LOG(INFO, VROUTER, "Error %d enabling vlan offload on port %d\n",
ret, *port_id_ptr);
} else {
RTE_LOG(INFO, VROUTER, "Enabled vlan offload on port %d\n",
*port_id_ptr);
}
ret = rte_eth_dev_vlan_filter(*port_id_ptr, vr_dpdk.vlan_tag, 1);
if (ret) {
RTE_LOG(INFO, VROUTER, "Error %d enabling vlan %d on port %d\n",
ret, vr_dpdk.vlan_tag, *port_id_ptr);
} else {
RTE_LOG(INFO, VROUTER, "Enabled vlan %d on port %d\n",
vr_dpdk.vlan_tag, *port_id_ptr);
}
}
for (i=0; i< rte_eth_devices[*port_id_ptr].data->nb_rx_queues; i++)
{
if (vif->vif_flags & VIF_FLAG_VLAN_OFFLOAD) {
rte_eth_dev_set_vlan_strip_on_queue(*port_id_ptr, i, 1);
} else {
rte_eth_dev_set_vlan_strip_on_queue(*port_id_ptr, i, 0);
}
}
port_num++;
port_id_ptr++;
} while (port_num < ethdev->ethdev_nb_slaves);
}
void
dpdk_vif_attach_ethdev(struct vr_interface *vif,
struct vr_dpdk_ethdev *ethdev)
{
struct ether_addr mac_addr;
struct rte_eth_dev_info dev_info;
int ret;
vif->vif_os = (void *)ethdev;
rte_eth_dev_info_get(ethdev->ethdev_port_id, &dev_info);
if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_IPV4_CKSUM
&& dev_info.tx_offload_capa & DEV_TX_OFFLOAD_UDP_CKSUM
&& dev_info.tx_offload_capa & DEV_TX_OFFLOAD_TCP_CKSUM) {
vif->vif_flags |= VIF_FLAG_TX_CSUM_OFFLOAD;
} else {
vif->vif_flags &= ~VIF_FLAG_TX_CSUM_OFFLOAD;
}
if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_VLAN_INSERT
&& dev_info.rx_offload_capa & DEV_RX_OFFLOAD_VLAN_STRIP) {
vif->vif_flags |= VIF_FLAG_VLAN_OFFLOAD;
} else {
vif->vif_flags &= ~VIF_FLAG_VLAN_OFFLOAD;
}
/*
* Do not want to overwrite what agent had sent.
* Set only if the address is null.
*/
memset(&mac_addr, 0, sizeof(mac_addr));
if (memcmp(vif->vif_mac, mac_addr.addr_bytes, ETHER_ADDR_LEN) == 0) {
rte_eth_macaddr_get(ethdev->ethdev_port_id, &mac_addr);
memcpy(vif->vif_mac, mac_addr.addr_bytes, ETHER_ADDR_LEN);
} else {
/*
* On some hardware (e100e, virtual functions, etc) the MAC is random,
* so we check if vif and NIC MACs are match and set the NIC MAC.
*/
rte_eth_macaddr_get(ethdev->ethdev_port_id, &mac_addr);
if (memcmp(vif->vif_mac, mac_addr.addr_bytes, ETHER_ADDR_LEN) != 0) {
/* No match, so set vif MAC to NIC. */
ret = rte_eth_dev_default_mac_addr_set(ethdev->ethdev_port_id,
(struct ether_addr *)vif->vif_mac);
if (ret == 0) {
RTE_LOG(INFO, VROUTER, " eth dev %s now use vif MAC "
MAC_FORMAT "\n",
vif->vif_name, MAC_VALUE(vif->vif_mac));
} else {
RTE_LOG(ERR, VROUTER, " error setting vif MAC to eth dev %s: "
"%s (%d)\n",
vif->vif_name, rte_strerror(-ret), -ret);
}
}
}
}
/*
* dpdk_vlan_forwarding_if_add - add VLAN forwarding interface
* Returns 0 on success, < 0 otherwise.
*/
int
dpdk_vlan_forwarding_if_add(void)
{
int ret;
struct vr_interface vlan_fwd_intf;
strncpy((char *)vlan_fwd_intf.vif_name, vr_dpdk.vlan_name,
sizeof(vlan_fwd_intf.vif_name));
vlan_fwd_intf.vif_type = VIF_TYPE_VLAN;
RTE_LOG(INFO, VROUTER, "Adding VLAN forwarding interface %s\n",
vr_dpdk.vlan_name);
ret = vr_dpdk_knidev_init(0, &vlan_fwd_intf);
if (ret != 0) {
RTE_LOG(ERR, VROUTER, "Error initializing KNI for VLAN forwarding interface\n");
return ret;
}
/* Save KNI handler needed to send packets to the interface. */
vr_dpdk.vlan_kni = (struct rte_kni *)vlan_fwd_intf.vif_os;
/*
* Allocate a multi-producer single-consumer ring - a buffer for packets
* waiting to be send to the forwarding interface.
*/
vr_dpdk.vlan_ring = vr_dpdk_ring_allocate(VR_DPDK_FWD_LCORE_ID,
vr_dpdk.vlan_name, VR_DPDK_TX_RING_SZ, RING_F_SC_DEQ);
if (!vr_dpdk.vlan_ring) {
RTE_LOG(ERR, VROUTER, "Error allocating ring for VLAN forwarding interface\n");
vr_dpdk.vlan_kni = NULL;
vr_dpdk_knidev_release(&vlan_fwd_intf);
return -1;
}
return 0;
}
/*
* Add af_packet virtual device to communicate with veth namespace devices.
* The device is removed with dpdk_fabric_af_packet_if_del().
*/
static int
dpdk_af_packet_if_add(struct vr_interface *vif) {
int ret;
char params[VR_INTERFACE_NAME_LEN + 7];
char name[VR_INTERFACE_NAME_LEN];
struct vr_dpdk_ethdev *ethdev;
uint8_t port_id;
RTE_LOG(INFO, VROUTER, "Adding vif %u (gen. %u) af_packet device %s type %d transport %d\n",
vif->vif_idx, vif->vif_gen, vif->vif_name, vif->vif_type, vif->vif_transport);
ret = snprintf(name, VR_INTERFACE_NAME_LEN, "eth_vif_%d", vif->vif_idx);
if (ret < 0 || ret > VR_INTERFACE_NAME_LEN) {
RTE_LOG(ERR, VROUTER, "Error creating name for AF_PACKET %s\n", name);
return ret;
}
ret = snprintf(params, sizeof(params),
/* TODO: Optional af_packet mmap parameters
*
* "iface=%s,qpairs=%d,blocksz=%d,framesz=%d,framecnt=%d",
* vif->vif_name, 16, 4096, 2048, 512);
*/
"iface=%s", vif->vif_name);
if (ret < 0 || ret > sizeof(params)) {
RTE_LOG(ERR, VROUTER, "Error creating config for AF_PACKET %s\n", name);
return ret;
}
ret = rte_pmd_af_packet_devinit(name, params);
if (ret < 0) {
RTE_LOG(ERR, VROUTER, "Error initializing AF_PACKET device %s\n", name);
return ret;
}
port_id = (uint8_t)(rte_eth_dev_allocated(name) - rte_eth_devices);
ethdev = &vr_dpdk.ethdevs[port_id];
if (ethdev->ethdev_ptr != NULL) {
RTE_LOG(ERR, VROUTER,
"Error adding AF_PACKET device: PMD ID %"PRIu8" already added.\n",
port_id);
return -EEXIST;
}
ethdev->ethdev_port_id = port_id;
ret = vr_dpdk_ethdev_init(ethdev);
if (ret != 0)
return ret;
dpdk_vif_attach_ethdev(vif, ethdev);
ret = rte_eth_dev_start(port_id);
if (ret < 0) {
RTE_LOG(ERR, VROUTER, "Error starting eth device %" PRIu8": %s (%d)\n",
port_id, rte_strerror(-ret), -ret);
return ret;
}
/* schedule RX/TX queues */
return vr_dpdk_lcore_if_schedule(vif, vr_dpdk_lcore_least_used_get(),
ethdev->ethdev_nb_rss_queues, &vr_dpdk_ethdev_rx_queue_init,
ethdev->ethdev_nb_tx_queues, &vr_dpdk_ethdev_tx_queue_init);
}
/* Add fabric interface */
static int
dpdk_fabric_if_add(struct vr_interface *vif)
{
int ret;
uint8_t port_id;
struct rte_pci_addr pci_address;
struct vr_dpdk_ethdev *ethdev;
struct ether_addr mac_addr;
memset(&pci_address, 0, sizeof(pci_address));
memset(&mac_addr, 0, sizeof(mac_addr));
if (vif->vif_flags & VIF_FLAG_PMD) {
if (vif->vif_os_idx >= rte_eth_dev_count()) {
RTE_LOG(ERR, VROUTER, "Error adding vif %u eth device %s: invalid PMD %u"
" (must be less than %u)\n", vif->vif_idx, vif->vif_name,
vif->vif_os_idx, (unsigned)rte_eth_dev_count());
return -ENOENT;
}
port_id = vif->vif_os_idx;
/* TODO: does not work for host interfaces
dpdk_find_pci_addr_by_port(&pci_address, port_id);
vif->vif_os_idx = dpdk_pci_to_dbdf(&pci_address);
*/
rte_eth_macaddr_get(port_id, &mac_addr);
RTE_LOG(INFO, VROUTER, "Adding vif %u (gen. %u) eth device %" PRIu8
" (PMD) MAC " MAC_FORMAT " (vif MAC "MAC_FORMAT")\n",
vif->vif_idx, vif->vif_gen, port_id,
MAC_VALUE(mac_addr.addr_bytes), MAC_VALUE(vif->vif_mac));
} else {
dpdk_dbdf_to_pci(vif->vif_os_idx, &pci_address);
port_id = dpdk_find_port_id_by_pci_addr(&pci_address);
if (port_id == VR_DPDK_INVALID_PORT_ID) {
RTE_LOG(ERR, VROUTER, "Error adding vif %u eth device %s:"
" no port ID found for PCI " PCI_PRI_FMT "\n",
vif->vif_idx, vif->vif_name,
pci_address.domain, pci_address.bus,
pci_address.devid, pci_address.function);
return -ENOENT;
}
rte_eth_macaddr_get(port_id, &mac_addr);
RTE_LOG(INFO, VROUTER, "Adding vif %u (gen. %u) eth device %" PRIu8
" PCI " PCI_PRI_FMT " MAC " MAC_FORMAT " (vif MAC "MAC_FORMAT")\n",
vif->vif_idx, vif->vif_gen, port_id,
pci_address.domain, pci_address.bus,
pci_address.devid, pci_address.function,
MAC_VALUE(mac_addr.addr_bytes), MAC_VALUE(vif->vif_mac));
}
ethdev = &vr_dpdk.ethdevs[port_id];
if (ethdev->ethdev_ptr != NULL) {
RTE_LOG(ERR, VROUTER, " error adding eth dev %s: already added\n",
vif->vif_name);
return -EEXIST;
}
ethdev->ethdev_port_id = port_id;
/* init eth device */
ret = vr_dpdk_ethdev_init(ethdev);
if (ret != 0)
return ret;
dpdk_vif_attach_ethdev(vif, ethdev);
ret = rte_eth_dev_start(port_id);
if (ret < 0) {
RTE_LOG(ERR, VROUTER, " error starting eth device %" PRIu8
": %s (%d)\n", port_id, rte_strerror(-ret), -ret);
return ret;
}
ret = vr_dpdk_ethdev_rss_init(ethdev);
if (ret < 0)
return ret;
/* we need to init Flow Director after the device has started */
#if VR_DPDK_USE_HW_FILTERING
/* init hardware filtering */
ret = vr_dpdk_ethdev_filtering_init(vif, ethdev);
if (ret < 0)
return ret;
#endif
/* Set hardware VLAN stripping */
dpdk_set_hw_vlan_filter_strip(port_id, vif);
/* schedule RX/TX queues */
return vr_dpdk_lcore_if_schedule(vif, vr_dpdk_lcore_least_used_get(),
ethdev->ethdev_nb_rss_queues, &vr_dpdk_ethdev_rx_queue_init,
ethdev->ethdev_nb_tx_queues, &vr_dpdk_ethdev_tx_queue_init);
}
/* Delete fabric or af_packet interface */
static int
dpdk_fabric_af_packet_if_del(struct vr_interface *vif)
{
uint8_t port_id;
struct vr_dpdk_ethdev *ethdev;
struct rte_eth_dev *ethdev_ptr;
RTE_LOG(INFO, VROUTER, "Deleting vif %u %s device\n", vif->vif_idx,
vif_is_fabric(vif) ? "eth" : "af_packet");
/*
* If dpdk_fabric_if_add() failed before dpdk_vif_attach_ethdev,
* then vif->vif_os will be NULL.
*/
if (vif->vif_os == NULL) {
RTE_LOG(ERR, VROUTER, " error deleting %s dev %s: already removed\n",
vif_is_fabric(vif) ? "eth" : "af_packet", vif->vif_name);
return -EEXIST;
}
ethdev = (struct vr_dpdk_ethdev *)(vif->vif_os);
ethdev_ptr = ethdev->ethdev_ptr;
port_id = ethdev->ethdev_port_id;
/* unschedule RX/TX queues */
vr_dpdk_lcore_if_unschedule(vif);
rte_eth_dev_stop(port_id);
/* af_packet release */
if (vif_is_namespace(vif)) {
/**
* af_packet does not implement rte_driver.uninit() that should
* free memory and call rte_eth_dev_release_port(). If we ever wanted
* to move to the pcap driver, we should call rte_eth_dev_close(),
* then rte_eth_dev_detach(). _detach() will call .uninit(), that is
* implemented in pcap. .uninit() will free memory and call
* _release_port().
*/
rte_eth_dev_close(port_id);
rte_free(ethdev_ptr->data->dev_private);
rte_free(ethdev_ptr->data);
rte_free(ethdev_ptr->pci_dev);
rte_eth_dev_release_port(ethdev_ptr);
}
/* release eth device */
return vr_dpdk_ethdev_release(ethdev);
}
/* Add vhost interface */
static int
dpdk_vhost_if_add(struct vr_interface *vif)
{
uint8_t port_id;
int ret;
struct ether_addr mac_addr;
struct vr_dpdk_ethdev *ethdev;
/*
* The Agent passes xconnect fabric interface in cross_connect_idx,
* but dp-core does not copy it into vr_interface. Instead
* it looks for an interface with os_idx == cross_connect_idx
* and sets vif->vif_bridge if there is such an interface.
*/
ethdev = (struct vr_dpdk_ethdev *)(vif->vif_bridge->vif_os);
if (ethdev == NULL) {
RTE_LOG(ERR, VROUTER, "Error adding vif %u KNI device %s:"
" bridge vif %u ethdev is not initialized\n",
vif->vif_idx, vif->vif_name, vif->vif_bridge->vif_idx);
return -ENOENT;
}
port_id = ethdev->ethdev_port_id;
/* get interface MAC address */
memset(&mac_addr, 0, sizeof(mac_addr));
rte_eth_macaddr_get(port_id, &mac_addr);
RTE_LOG(INFO, VROUTER, "Adding vif %u (gen. %u) KNI device %s at eth device %" PRIu8
" MAC " MAC_FORMAT " (vif MAC " MAC_FORMAT ")\n",
vif->vif_idx, vif->vif_gen, vif->vif_name, port_id,
MAC_VALUE(mac_addr.addr_bytes), MAC_VALUE(vif->vif_mac));
/*
* KNI does not support bond interfaces and generate random MACs,
* so we try to get a bond member instead.
*/
if (ethdev->ethdev_nb_slaves > 0) {
port_id = ethdev->ethdev_slaves[0];
memset(&mac_addr, 0, sizeof(mac_addr));
rte_eth_macaddr_get(port_id, &mac_addr);
RTE_LOG(INFO, VROUTER, " using bond slave eth device %" PRIu8
" MAC " MAC_FORMAT "\n",
port_id, MAC_VALUE(mac_addr.addr_bytes));
}
/* init KNI */
ret = vr_dpdk_knidev_init(port_id, vif);
if (ret != 0)
return ret;
return vr_dpdk_lcore_if_schedule(vif, vr_dpdk_lcore_least_used_get(),
1, &vr_dpdk_kni_rx_queue_init,
1, &vr_dpdk_kni_tx_queue_init);
}
/* Delete vhost interface */
static int
dpdk_vhost_if_del(struct vr_interface *vif)
{
RTE_LOG(INFO, VROUTER, "Deleting vif %u KNI device %s\n",
vif->vif_idx, vif->vif_name);
vr_dpdk_lcore_if_unschedule(vif);
/* release KNI */
return vr_dpdk_knidev_release(vif);
}
/* Start interface monitoring */
static void
dpdk_monitoring_start(struct vr_interface *monitored_vif,
struct vr_interface *monitoring_vif)
{
uint8_t port_id;
/* set monitoring redirection */
vr_dpdk.monitorings[monitored_vif->vif_idx] = monitoring_vif->vif_idx;
/* set vif flag */
rte_wmb();
monitored_vif->vif_flags |= VIF_FLAG_MONITORED;
if(vif_is_fabric(monitored_vif)) {
port_id = (((struct vr_dpdk_ethdev *)(monitored_vif->vif_os))->ethdev_port_id);
rte_eth_promiscuous_enable(port_id);
}
}
/* Stop interface monitoring */
static void
dpdk_monitoring_stop(struct vr_interface *monitored_vif,
struct vr_interface *monitoring_vif)
{
#if !VR_DPDK_ENABLE_PROMISC
uint8_t port_id;
#endif
/* check if the monitored vif was reused */
if (vr_dpdk.monitorings[monitored_vif->vif_idx] != monitoring_vif->vif_idx)
return;
/* clear vif flag */
monitored_vif->vif_flags &= ~((unsigned int)VIF_FLAG_MONITORED);
rte_wmb();
/* clear monitoring redirection */
vr_dpdk.monitorings[monitored_vif->vif_idx] = VR_MAX_INTERFACES;
#if !VR_DPDK_ENABLE_PROMISC
if(vif_is_fabric(monitored_vif)) {
port_id = (((struct vr_dpdk_ethdev *)(monitored_vif->vif_os))->ethdev_port_id);
rte_eth_promiscuous_disable(port_id);
}
#endif
}
/* Add monitoring interface */
static int
dpdk_monitoring_if_add(struct vr_interface *vif)
{
int ret;
unsigned short monitored_vif_id = vif->vif_os_idx;
struct vr_interface *monitored_vif;
struct vrouter *router = vrouter_get(vif->vif_rid);
RTE_LOG(INFO, VROUTER, "Adding monitoring vif %u (gen. %u) KNI device %s"
" to monitor vif %u\n",
vif->vif_idx, vif->vif_gen, vif->vif_name, monitored_vif_id);
/* Check if vif exist.
* We don't need vif reference in order to monitor it.
* We use the VIF_FLAG_MONITORED to copy in/out packet to the
* monitoring interface. If the monitored vif get deleted, we simply
* get no more packets.
*/
monitored_vif = __vrouter_get_interface(router, monitored_vif_id);
if (!monitored_vif) {
RTE_LOG(ERR, VROUTER, " error getting vif to monitor:"
" vif %u does not exist\n", monitored_vif_id);
return -EINVAL;
}
/*
* TODO: we always use DPDK port 0 for monitoring KNI
* DPDK numerates all the detected Ethernet devices starting from 0.
* So we might only get into an issue if we have no eth devices at all
* or we have few eth ports and don't want to use the first one.
*/
ret = vr_dpdk_knidev_init(0, vif);
if (ret != 0)
return ret;
/* write-only interface */
ret = vr_dpdk_lcore_if_schedule(vif, vr_dpdk_lcore_least_used_get(),
0, NULL,
1, &vr_dpdk_kni_tx_queue_init);
if (ret != 0)
return ret;
/* start monitoring */
dpdk_monitoring_start(monitored_vif, vif);
return 0;
}
/* Delete monitoring interface */
static int
dpdk_monitoring_if_del(struct vr_interface *vif)
{
unsigned short monitored_vif_id = vif->vif_os_idx;
struct vr_interface *monitored_vif;
RTE_LOG(INFO, VROUTER, "Deleting monitoring vif %u KNI device"
" to monitor vif %u\n",
vif->vif_idx, monitored_vif_id);
/* check if vif exist */
monitored_vif = __vrouter_get_interface(vrouter_get(vif->vif_rid),
monitored_vif_id);
if (!monitored_vif) {
RTE_LOG(ERR, VROUTER, " error getting vif to monitor:"
" vif %u does not exist\n", monitored_vif_id);
} else {
/* stop monitoring */
dpdk_monitoring_stop(monitored_vif, vif);
}
vr_dpdk_lcore_if_unschedule(vif);
/* release KNI */
return vr_dpdk_knidev_release(vif);
}
/* Add agent interface */
static int
dpdk_agent_if_add(struct vr_interface *vif)
{
int ret;
RTE_LOG(INFO, VROUTER, "Adding vif %u (gen. %u) packet device %s\n",
vif->vif_idx, vif->vif_gen, vif->vif_name);
/* check if packet device is already added */
if (vr_dpdk.packet_transport != NULL) {
RTE_LOG(ERR, VROUTER, " error adding packet device %s: already exist\n",
vif->vif_name);
return -EEXIST;
}
/* init packet device */
ret = dpdk_packet_socket_init();
if (ret < 0) {
RTE_LOG(ERR, VROUTER, " error initializing packet socket: %s (%d)\n",
rte_strerror(errno), errno);
return ret;
}
vr_usocket_attach_vif(vr_dpdk.packet_transport, vif);
/* No need to schedule the pkt0 at the moment, since we RX from the
* socket and TX to the global packet_ring.
*/
return 0;
}
/* Delete agent interface */
static int
dpdk_agent_if_del(struct vr_interface *vif)
{
RTE_LOG(INFO, VROUTER, "Deleting vif %u packet device\n",
vif->vif_idx);
dpdk_packet_socket_close();
return 0;
}
extern void vhost_remove_xconnect(void);
/* vRouter callback */
static int
dpdk_if_add(struct vr_interface *vif)
{
if (vr_dpdk_is_stop_flag_set())
return -EINPROGRESS;
if (vif_is_fabric(vif)) return dpdk_fabric_if_add(vif);
else if (vif_is_vm(vif)) return dpdk_virtual_if_add(vif);
else if (vif_is_vlan(vif)) return dpdk_virtual_vlan_if_add(vif);
else if (vif_is_namespace(vif)) return dpdk_af_packet_if_add(vif);
else if (vif_is_vhost(vif)) return dpdk_vhost_if_add(vif);
else if (vif_is_agent(vif)) return dpdk_agent_if_add(vif);
else if (vif_is_monitoring(vif)) return dpdk_monitoring_if_add(vif);
RTE_LOG(ERR, VROUTER,
"Error adding vif %d (%s): unsupported interface type %d transport %d\n",
vif->vif_idx, vif->vif_name, vif->vif_type, vif->vif_transport);
return -EFAULT;
}
static int
dpdk_if_del(struct vr_interface *vif)
{
if (vr_dpdk_is_stop_flag_set())
return -EINPROGRESS;
if (vif_is_fabric(vif) ||
vif_is_namespace(vif)) return dpdk_fabric_af_packet_if_del(vif);
else if (vif_is_vm(vif)) return dpdk_virtual_if_del(vif);
else if (vif_is_vlan(vif)) return dpdk_virtual_vlan_if_del(vif);
else if (vif_is_vhost(vif)) return dpdk_vhost_if_del(vif);
else if (vif_is_agent(vif)) return dpdk_agent_if_del(vif);
else if (vif_is_monitoring(vif)) return dpdk_monitoring_if_del(vif);
RTE_LOG(ERR, VROUTER,
"Error deleting vif %d: unsupported interface type %d transport %d\n",
vif->vif_idx, vif->vif_type, vif->vif_transport);
return -EFAULT;
}
/* vRouter callback */
static int
dpdk_if_del_tap(struct vr_interface *vif)
{
/* TODO: we untap interfaces at if_del */
return 0;
}
/* vRouter callback */
static int
dpdk_if_add_tap(struct vr_interface *vif)
{
/* TODO: we tap interfaces at if_add */
return 0;
}
static inline void
dpdk_hw_checksum_at_offset(struct vr_packet *pkt, unsigned offset)
{
struct rte_mbuf *m = vr_dpdk_pkt_to_mbuf(pkt);
struct vr_ip *iph = NULL;
struct vr_ip6 *ip6h = NULL;
unsigned char iph_len = 0, iph_proto = 0;
struct vr_tcp *tcph;
struct vr_udp *udph;
RTE_VERIFY(0 < offset);
if (pkt->vp_type == VP_TYPE_IP || pkt->vp_type == VP_TYPE_IPOIP) {
iph = (struct vr_ip *)pkt_data_at_offset(pkt, offset);
iph_len = iph->ip_hl * 4;
iph_proto = iph->ip_proto;
m->ol_flags |= PKT_TX_IP_CKSUM | PKT_TX_IPV4;
iph->ip_csum = 0;
} else if (pkt->vp_type == VP_TYPE_IP6 || pkt->vp_type == VP_TYPE_IP6OIP) {
ip6h = (struct vr_ip6 *)pkt_data_at_offset(pkt, offset);
iph_len = sizeof(struct vr_ip6);
iph_proto = ip6h->ip6_nxt;
m->ol_flags |= PKT_TX_IPV6;
} else {
/* Nothing to do if the packet is neither IPv4 nor IPv6. */
return;
}
/* Note: Intel NICs need the checksum set to zero
* and proper l2/l3 lens to be set.
*/
m->l3_len = iph_len;
m->l2_len = offset - rte_pktmbuf_headroom(m);
/* calculate TCP/UDP checksum */
if (likely(iph_proto == VR_IP_PROTO_UDP)) {
m->ol_flags |= PKT_TX_UDP_CKSUM;
udph = (struct vr_udp *)pkt_data_at_offset(pkt, offset + iph_len);
udph->udp_csum = 0;
if (iph)
udph->udp_csum = rte_ipv4_phdr_cksum((struct ipv4_hdr *)iph, m->ol_flags);
else if (ip6h)
udph->udp_csum = rte_ipv6_phdr_cksum((struct ipv6_hdr *)ip6h, m->ol_flags);
} else if (likely(iph_proto == VR_IP_PROTO_TCP)) {
m->ol_flags |= PKT_TX_TCP_CKSUM;
tcph = (struct vr_tcp *)pkt_data_at_offset(pkt, offset + iph_len);
tcph->tcp_csum = 0;
if (iph)
tcph->tcp_csum = rte_ipv4_phdr_cksum((struct ipv4_hdr *)iph, m->ol_flags);
else if (ip6h)
tcph->tcp_csum = rte_ipv6_phdr_cksum((struct ipv6_hdr *)ip6h, m->ol_flags);
}
}
static inline void
dpdk_ipv4_sw_iphdr_checksum_at_offset(struct vr_packet *pkt, unsigned offset)
{
struct vr_ip *iph;
RTE_VERIFY(0 < offset);
iph = (struct vr_ip *)pkt_data_at_offset(pkt, offset);
iph->ip_csum = vr_ip_csum(iph);
}
static inline void
dpdk_sw_checksum_at_offset(struct vr_packet *pkt, unsigned offset)
{
struct vr_ip *iph = NULL;
struct vr_ip6 *ip6h = NULL;
unsigned char iph_len = 0, iph_proto = 0;
struct vr_udp *udph;
struct vr_tcp *tcph;
RTE_VERIFY(0 < offset);
if (pkt->vp_type == VP_TYPE_IP || pkt->vp_type == VP_TYPE_IPOIP) {
iph = (struct vr_ip *)pkt_data_at_offset(pkt, offset);
iph->ip_csum = vr_ip_csum(iph);
iph_len = iph->ip_hl * 4;
iph_proto = iph->ip_proto;
} else if (pkt->vp_type == VP_TYPE_IP6 || pkt->vp_type == VP_TYPE_IP6OIP) {
ip6h = (struct vr_ip6 *)pkt_data_at_offset(pkt, offset);
iph_len = sizeof(struct vr_ip6);
iph_proto = ip6h->ip6_nxt;
} else {
/* Nothing to do if the packet is neither IPv4 nor IPv6. */
return;
}
if (iph_proto == VR_IP_PROTO_UDP) {
udph = (struct vr_udp *)pkt_data_at_offset(pkt, offset + iph_len);
udph->udp_csum = 0;
if (iph)
udph->udp_csum = rte_ipv4_udptcp_cksum((struct ipv4_hdr *)iph, udph);
else if (ip6h)
udph->udp_csum = rte_ipv6_udptcp_cksum((struct ipv6_hdr *)ip6h, udph);
} else if (iph_proto == VR_IP_PROTO_TCP) {
tcph = (struct vr_tcp *)pkt_data_at_offset(pkt, offset + iph_len);
tcph->tcp_csum = 0;
if (iph)
tcph->tcp_csum = rte_ipv4_udptcp_cksum((struct ipv4_hdr *)iph, tcph);
else if (ip6h)
tcph->tcp_csum = rte_ipv6_udptcp_cksum((struct ipv6_hdr *)ip6h, tcph);
}
}
static inline void
dpdk_ipv4_outer_tunnel_hw_checksum(struct vr_packet *pkt)
{
struct rte_mbuf *m = vr_dpdk_pkt_to_mbuf(pkt);
unsigned offset = pkt->vp_data + sizeof(struct ether_hdr);
struct vr_ip *iph = (struct vr_ip *)pkt_data_at_offset(pkt, offset);
unsigned iph_len = iph->ip_hl * 4;
m->ol_flags |= PKT_TX_IP_CKSUM | PKT_TX_IPV4;
iph->ip_csum = 0;
m->l3_len = iph_len;
m->l2_len = offset - rte_pktmbuf_headroom(m);
}
static inline void
dpdk_ipv4_outer_tunnel_sw_checksum(struct vr_packet *pkt)
{
unsigned offset = pkt->vp_data + sizeof(struct ether_hdr);
struct vr_ip *iph = (struct vr_ip *)pkt_data_at_offset(pkt, offset);
iph->ip_csum = vr_ip_csum(iph);
}
static inline void
dpdk_hw_checksum(struct vr_packet *pkt)
{
/* if a tunnel */
if (vr_pkt_type_is_overlay(pkt->vp_type)) {
/* calculate outer checksum in soft */
dpdk_ipv4_sw_iphdr_checksum_at_offset(pkt,
pkt->vp_data + sizeof(struct ether_hdr));
/* calculate inner checksum in hardware */
dpdk_hw_checksum_at_offset(pkt, pkt_get_inner_network_header_off(pkt));
} else if (VP_TYPE_IP == pkt->vp_type || VP_TYPE_IP6 == pkt->vp_type) {
/* normal IPv4 or IPv6 packet */
dpdk_hw_checksum_at_offset(pkt, pkt->vp_data + sizeof(struct ether_hdr));
}
}
static inline void
dpdk_sw_checksum(struct vr_packet *pkt, bool will_fragment)
{
/* if a tunnel */
if (vr_pkt_type_is_overlay(pkt->vp_type)) {
/* calculate outer checksum */
if (!will_fragment)
dpdk_ipv4_sw_iphdr_checksum_at_offset(pkt,
pkt->vp_data + sizeof(struct ether_hdr));
/* calculate inner checksum */
dpdk_sw_checksum_at_offset(pkt, pkt_get_inner_network_header_off(pkt));
} else if (VP_TYPE_IP == pkt->vp_type || VP_TYPE_IP6 == pkt->vp_type) {
/* normal IPv4 or IPv6 packet */
dpdk_sw_checksum_at_offset(pkt, pkt->vp_data + sizeof(struct ether_hdr));
}
}
static uint16_t
dpdk_get_ether_header_len(const void *data)
{
struct ether_hdr *eth = (struct ether_hdr *)data;
if (eth->ether_type == rte_cpu_to_be_16(ETHER_TYPE_VLAN))
return sizeof(struct ether_hdr) + sizeof(struct vlan_hdr);
else
return sizeof(struct ether_hdr);
}