#include <rte_net.h>
#include <rte_debug.h>
#include <rte_ip.h>
+#include <rte_string_fns.h>
#include <sys/types.h>
#include <sys/stat.h>
/* Linux based path to the TUN device */
#define TUN_TAP_DEV_PATH "/dev/net/tun"
#define DEFAULT_TAP_NAME "dtap"
+#define DEFAULT_TUN_NAME "dtun"
#define ETH_TAP_IFACE_ARG "iface"
#define ETH_TAP_REMOTE_ARG "remote"
#define ETH_TAP_MAC_ARG "mac"
#define ETH_TAP_MAC_FIXED "fixed"
+#define ETH_TAP_USR_MAC_FMT "xx:xx:xx:xx:xx:xx"
+#define ETH_TAP_CMP_MAC_FMT "0123456789ABCDEFabcdef"
+#define ETH_TAP_MAC_ARG_FMT ETH_TAP_MAC_FIXED "|" ETH_TAP_USR_MAC_FMT
+
static struct rte_vdev_driver pmd_tap_drv;
+static struct rte_vdev_driver pmd_tun_drv;
static const char *valid_arguments[] = {
ETH_TAP_IFACE_ARG,
};
static int tap_unit;
+static int tun_unit;
+
+static int tap_type;
+static char tuntap_name[8];
static volatile uint32_t tap_trigger; /* Rx trigger */
* Do not set IFF_NO_PI as packet information header will be needed
* to check if a received packet has been truncated.
*/
- ifr.ifr_flags = IFF_TAP;
+ ifr.ifr_flags = (tap_type) ? IFF_TAP : IFF_TUN | IFF_POINTOPOINT;
snprintf(ifr.ifr_name, IFNAMSIZ, "%s", pmd->name);
RTE_LOG(DEBUG, PMD, "ifr_name '%s'\n", ifr.ifr_name);
fd = open(TUN_TAP_DEV_PATH, O_RDWR);
if (fd < 0) {
- RTE_LOG(ERR, PMD, "Unable to create TAP interface\n");
+ RTE_LOG(ERR, PMD, "Unable to create %s interface\n",
+ tuntap_name);
goto error;
}
#ifdef IFF_MULTI_QUEUE
/* Grab the TUN features to verify we can work multi-queue */
if (ioctl(fd, TUNGETFEATURES, &features) < 0) {
- RTE_LOG(ERR, PMD, "TAP unable to get TUN/TAP features\n");
+ RTE_LOG(ERR, PMD, "%s unable to get TUN/TAP features\n",
+ tuntap_name);
goto error;
}
- RTE_LOG(DEBUG, PMD, " TAP Features %08x\n", features);
+ RTE_LOG(DEBUG, PMD, "%s Features %08x\n", tuntap_name, features);
if (features & IFF_MULTI_QUEUE) {
RTE_LOG(DEBUG, PMD, " Multi-queue support for %d queues\n",
return DEV_RX_OFFLOAD_SCATTER |
DEV_RX_OFFLOAD_IPV4_CKSUM |
DEV_RX_OFFLOAD_UDP_CKSUM |
- DEV_RX_OFFLOAD_TCP_CKSUM;
+ DEV_RX_OFFLOAD_TCP_CKSUM |
+ DEV_RX_OFFLOAD_CRC_STRIP;
}
static uint64_t
return DEV_RX_OFFLOAD_SCATTER |
DEV_RX_OFFLOAD_IPV4_CKSUM |
DEV_RX_OFFLOAD_UDP_CKSUM |
- DEV_RX_OFFLOAD_TCP_CKSUM;
+ DEV_RX_OFFLOAD_TCP_CKSUM |
+ DEV_RX_OFFLOAD_CRC_STRIP;
}
static bool
for (i = 0; i < nb_pkts; i++) {
struct rte_mbuf *mbuf = bufs[num_tx];
struct iovec iovecs[mbuf->nb_segs + 1];
- struct tun_pi pi = { .flags = 0 };
+ struct tun_pi pi = { .flags = 0, .proto = 0x00 };
struct rte_mbuf *seg = mbuf;
char m_copy[mbuf->data_len];
int n;
if (rte_pktmbuf_pkt_len(mbuf) > max_size)
break;
+ /*
+ * TUN and TAP are created with IFF_NO_PI disabled.
+ * For TUN PMD this mandatory as fields are used by
+ * Kernel tun.c to determine whether its IP or non IP
+ * packets.
+ *
+ * The logic fetches the first byte of data from mbuf.
+ * compares whether its v4 or v6. If none matches default
+ * value 0x00 is taken for protocol field.
+ */
+ char *buff_data = rte_pktmbuf_mtod(seg, void *);
+ j = (*buff_data & 0xf0);
+ if (j & (0x40 | 0x60))
+ pi.proto = (j == 0x40) ? 0x0008 : 0xdd86;
+
iovecs[0].iov_base = π
iovecs[0].iov_len = sizeof(pi);
for (j = 1; j <= mbuf->nb_segs; j++) {
dev_info->max_rx_queues = RTE_PMD_TAP_MAX_QUEUES;
dev_info->max_tx_queues = RTE_PMD_TAP_MAX_QUEUES;
dev_info->min_rx_bufsize = 0;
- dev_info->pci_dev = NULL;
dev_info->speed_capa = tap_dev_speed_capa();
dev_info->rx_queue_offload_capa = tap_rx_offload_get_queue_capa();
dev_info->rx_offload_capa = tap_rx_offload_get_port_capa() |
tap_flow_implicit_destroy(pmd, TAP_REMOTE_ALLMULTI);
}
-static void
+static int
tap_mac_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
{
struct pmd_internals *pmd = dev->data->dev_private;
enum ioctl_mode mode = LOCAL_ONLY;
struct ifreq ifr;
+ int ret;
if (is_zero_ether_addr(mac_addr)) {
RTE_LOG(ERR, PMD, "%s: can't set an empty MAC address\n",
dev->device->name);
- return;
+ return -EINVAL;
}
/* Check the actual current MAC address on the tap netdevice */
- if (tap_ioctl(pmd, SIOCGIFHWADDR, &ifr, 0, LOCAL_ONLY) < 0)
- return;
+ ret = tap_ioctl(pmd, SIOCGIFHWADDR, &ifr, 0, LOCAL_ONLY);
+ if (ret < 0)
+ return ret;
if (is_same_ether_addr((struct ether_addr *)&ifr.ifr_hwaddr.sa_data,
mac_addr))
- return;
+ return 0;
/* Check the current MAC address on the remote */
- if (tap_ioctl(pmd, SIOCGIFHWADDR, &ifr, 0, REMOTE_ONLY) < 0)
- return;
+ ret = tap_ioctl(pmd, SIOCGIFHWADDR, &ifr, 0, REMOTE_ONLY);
+ if (ret < 0)
+ return ret;
if (!is_same_ether_addr((struct ether_addr *)&ifr.ifr_hwaddr.sa_data,
mac_addr))
mode = LOCAL_AND_REMOTE;
ifr.ifr_hwaddr.sa_family = AF_LOCAL;
rte_memcpy(ifr.ifr_hwaddr.sa_data, mac_addr, ETHER_ADDR_LEN);
- if (tap_ioctl(pmd, SIOCSIFHWADDR, &ifr, 1, mode) < 0)
- return;
+ ret = tap_ioctl(pmd, SIOCSIFHWADDR, &ifr, 1, mode);
+ if (ret < 0)
+ return ret;
rte_memcpy(&pmd->eth_addr, mac_addr, ETHER_ADDR_LEN);
if (pmd->remote_if_index && !pmd->flow_isolate) {
/* Replace MAC redirection rule after a MAC change */
- if (tap_flow_implicit_destroy(pmd, TAP_REMOTE_LOCAL_MAC) < 0) {
+ ret = tap_flow_implicit_destroy(pmd, TAP_REMOTE_LOCAL_MAC);
+ if (ret < 0) {
RTE_LOG(ERR, PMD,
"%s: Couldn't delete MAC redirection rule\n",
dev->device->name);
- return;
+ return ret;
}
- if (tap_flow_implicit_create(pmd, TAP_REMOTE_LOCAL_MAC) < 0)
+ ret = tap_flow_implicit_create(pmd, TAP_REMOTE_LOCAL_MAC);
+ if (ret < 0) {
RTE_LOG(ERR, PMD,
"%s: Couldn't add MAC redirection rule\n",
dev->device->name);
+ return ret;
+ }
}
+
+ return 0;
}
static int
tmp = &(*tmp)->next;
}
- RTE_LOG(DEBUG, PMD, " RX TAP device name %s, qid %d on fd %d\n",
+ RTE_LOG(DEBUG, PMD, " RX TUNTAP device name %s, qid %d on fd %d\n",
internals->name, rx_queue_id, internals->rxq[rx_queue_id].fd);
return 0;
if (ret == -1)
return -1;
RTE_LOG(DEBUG, PMD,
- " TX TAP device name %s, qid %d on fd %d csum %s\n",
+ " TX TUNTAP device name %s, qid %d on fd %d csum %s\n",
internals->name, tx_queue_id, internals->txq[tx_queue_id].fd,
txq->csum ? "on" : "off");
static int
eth_dev_tap_create(struct rte_vdev_device *vdev, char *tap_name,
- char *remote_iface, int fixed_mac_type)
+ char *remote_iface, struct ether_addr *mac_addr)
{
int numa_node = rte_socket_id();
struct rte_eth_dev *dev;
struct ifreq ifr;
int i;
- RTE_LOG(DEBUG, PMD, " TAP device on numa %u\n", rte_socket_id());
+ RTE_LOG(DEBUG, PMD, "%s device on numa %u\n",
+ tuntap_name, rte_socket_id());
data = rte_zmalloc_socket(tap_name, sizeof(*data), 0, numa_node);
if (!data) {
- RTE_LOG(ERR, PMD, "TAP Failed to allocate data\n");
- goto error_exit;
+ RTE_LOG(ERR, PMD, "%s Failed to allocate data\n", tuntap_name);
+ goto error_exit_nodev;
}
dev = rte_eth_vdev_allocate(vdev, sizeof(*pmd));
if (!dev) {
- RTE_LOG(ERR, PMD, "TAP Unable to allocate device struct\n");
- goto error_exit;
+ RTE_LOG(ERR, PMD, "%s Unable to allocate device struct\n",
+ tuntap_name);
+ goto error_exit_nodev;
}
pmd = dev->data->dev_private;
pmd->ioctl_sock = socket(AF_INET, SOCK_DGRAM, 0);
if (pmd->ioctl_sock == -1) {
RTE_LOG(ERR, PMD,
- "TAP Unable to get a socket for management: %s\n",
- strerror(errno));
+ "%s Unable to get a socket for management: %s\n",
+ tuntap_name, strerror(errno));
goto error_exit;
}
pmd->txq[i].fd = -1;
}
- if (fixed_mac_type) {
- /* fixed mac = 00:64:74:61:70:<iface_idx> */
- static int iface_idx;
- char mac[ETHER_ADDR_LEN] = "\0dtap";
-
- mac[ETHER_ADDR_LEN - 1] = iface_idx++;
- rte_memcpy(&pmd->eth_addr, mac, ETHER_ADDR_LEN);
- } else {
- eth_random_addr((uint8_t *)&pmd->eth_addr);
+ if (tap_type) {
+ if (is_zero_ether_addr(mac_addr))
+ eth_random_addr((uint8_t *)&pmd->eth_addr);
+ else
+ rte_memcpy(&pmd->eth_addr, mac_addr, sizeof(*mac_addr));
}
/* Immediately create the netdevice (this will create the 1st queue). */
if (tap_ioctl(pmd, SIOCSIFMTU, &ifr, 1, LOCAL_AND_REMOTE) < 0)
goto error_exit;
- memset(&ifr, 0, sizeof(struct ifreq));
- ifr.ifr_hwaddr.sa_family = AF_LOCAL;
- rte_memcpy(ifr.ifr_hwaddr.sa_data, &pmd->eth_addr, ETHER_ADDR_LEN);
- if (tap_ioctl(pmd, SIOCSIFHWADDR, &ifr, 0, LOCAL_ONLY) < 0)
- goto error_exit;
+ if (tap_type) {
+ memset(&ifr, 0, sizeof(struct ifreq));
+ ifr.ifr_hwaddr.sa_family = AF_LOCAL;
+ rte_memcpy(ifr.ifr_hwaddr.sa_data, &pmd->eth_addr,
+ ETHER_ADDR_LEN);
+ if (tap_ioctl(pmd, SIOCSIFHWADDR, &ifr, 0, LOCAL_ONLY) < 0)
+ goto error_exit;
+ }
/*
* Set up everything related to rte_flow:
tap_flow_implicit_flush(pmd, NULL);
error_exit:
- RTE_LOG(ERR, PMD, "TAP Unable to initialize %s\n",
- rte_vdev_device_name(vdev));
+ if (pmd->ioctl_sock > 0)
+ close(pmd->ioctl_sock);
+ rte_eth_dev_release_port(dev);
+
+error_exit_nodev:
+ RTE_LOG(ERR, PMD, "%s Unable to initialize %s\n",
+ tuntap_name, rte_vdev_device_name(vdev));
rte_free(data);
return -EINVAL;
char *name = (char *)extra_args;
if (value)
- snprintf(name, RTE_ETH_NAME_MAX_LEN - 1, "%s", value);
+ strlcpy(name, value, RTE_ETH_NAME_MAX_LEN - 1);
else
snprintf(name, RTE_ETH_NAME_MAX_LEN - 1, "%s%d",
DEFAULT_TAP_NAME, (tap_unit - 1));
char *name = (char *)extra_args;
if (value)
- snprintf(name, RTE_ETH_NAME_MAX_LEN, "%s", value);
+ strlcpy(name, value, RTE_ETH_NAME_MAX_LEN);
return 0;
}
+static int parse_user_mac(struct ether_addr *user_mac,
+ const char *value)
+{
+ unsigned int index = 0;
+ char mac_temp[strlen(ETH_TAP_USR_MAC_FMT) + 1], *mac_byte = NULL;
+
+ if (user_mac == NULL || value == NULL)
+ return 0;
+
+ strlcpy(mac_temp, value, sizeof(mac_temp));
+ mac_byte = strtok(mac_temp, ":");
+
+ while ((mac_byte != NULL) &&
+ (strlen(mac_byte) <= 2) &&
+ (strlen(mac_byte) == strspn(mac_byte,
+ ETH_TAP_CMP_MAC_FMT))) {
+ user_mac->addr_bytes[index++] = strtoul(mac_byte, NULL, 16);
+ mac_byte = strtok(NULL, ":");
+ }
+
+ return index;
+}
+
static int
set_mac_type(const char *key __rte_unused,
const char *value,
void *extra_args)
{
- if (value &&
- !strncasecmp(ETH_TAP_MAC_FIXED, value, strlen(ETH_TAP_MAC_FIXED)))
- *(int *)extra_args = 1;
+ struct ether_addr *user_mac = extra_args;
+
+ if (!value)
+ return 0;
+
+ if (!strncasecmp(ETH_TAP_MAC_FIXED, value, strlen(ETH_TAP_MAC_FIXED))) {
+ static int iface_idx;
+
+ /* fixed mac = 00:64:74:61:70:<iface_idx> */
+ memcpy((char *)user_mac->addr_bytes, "\0dtap", ETHER_ADDR_LEN);
+ user_mac->addr_bytes[ETHER_ADDR_LEN - 1] = iface_idx++ + '0';
+ goto success;
+ }
+
+ if (parse_user_mac(user_mac, value) != 6)
+ goto error;
+success:
+ RTE_LOG(DEBUG, PMD, "TAP user MAC param (%s)\n", value);
return 0;
+
+error:
+ RTE_LOG(ERR, PMD, "TAP user MAC (%s) is not in format (%s|%s)\n",
+ value, ETH_TAP_MAC_FIXED, ETH_TAP_USR_MAC_FMT);
+ return -1;
+}
+
+/*
+ * Open a TUN interface device. TUN PMD
+ * 1) sets tap_type as false
+ * 2) intakes iface as argument.
+ * 3) as interface is virtual set speed to 10G
+ */
+static int
+rte_pmd_tun_probe(struct rte_vdev_device *dev)
+{
+ const char *name, *params;
+ int ret;
+ struct rte_kvargs *kvlist = NULL;
+ char tun_name[RTE_ETH_NAME_MAX_LEN];
+ char remote_iface[RTE_ETH_NAME_MAX_LEN];
+
+ tap_type = 0;
+ strcpy(tuntap_name, "TUN");
+
+ name = rte_vdev_device_name(dev);
+ params = rte_vdev_device_args(dev);
+ memset(remote_iface, 0, RTE_ETH_NAME_MAX_LEN);
+
+ if (params && (params[0] != '\0')) {
+ RTE_LOG(DEBUG, PMD, "parameters (%s)\n", params);
+
+ kvlist = rte_kvargs_parse(params, valid_arguments);
+ if (kvlist) {
+ if (rte_kvargs_count(kvlist, ETH_TAP_IFACE_ARG) == 1) {
+ ret = rte_kvargs_process(kvlist,
+ ETH_TAP_IFACE_ARG,
+ &set_interface_name,
+ tun_name);
+
+ if (ret == -1)
+ goto leave;
+ }
+ }
+ }
+ pmd_link.link_speed = ETH_SPEED_NUM_10G;
+
+ RTE_LOG(NOTICE, PMD, "Initializing pmd_tun for %s as %s\n",
+ name, tun_name);
+
+ ret = eth_dev_tap_create(dev, tun_name, remote_iface, 0);
+
+leave:
+ if (ret == -1) {
+ RTE_LOG(ERR, PMD, "Failed to create pmd for %s as %s\n",
+ name, tun_name);
+ tun_unit--; /* Restore the unit number */
+ }
+ rte_kvargs_free(kvlist);
+
+ return ret;
}
/* Open a TAP interface device.
int speed;
char tap_name[RTE_ETH_NAME_MAX_LEN];
char remote_iface[RTE_ETH_NAME_MAX_LEN];
- int fixed_mac_type = 0;
+ struct ether_addr user_mac = { .addr_bytes = {0} };
+
+ tap_type = 1;
+ strcpy(tuntap_name, "TAP");
name = rte_vdev_device_name(dev);
params = rte_vdev_device_args(dev);
ret = rte_kvargs_process(kvlist,
ETH_TAP_MAC_ARG,
&set_mac_type,
- &fixed_mac_type);
+ &user_mac);
if (ret == -1)
goto leave;
}
RTE_LOG(NOTICE, PMD, "Initializing pmd_tap for %s as %s\n",
name, tap_name);
- ret = eth_dev_tap_create(dev, tap_name, remote_iface, fixed_mac_type);
+ ret = eth_dev_tap_create(dev, tap_name, remote_iface, &user_mac);
leave:
if (ret == -1) {
return ret;
}
-/* detach a TAP device.
+/* detach a TUNTAP device.
*/
static int
rte_pmd_tap_remove(struct rte_vdev_device *dev)
return 0;
}
+static struct rte_vdev_driver pmd_tun_drv = {
+ .probe = rte_pmd_tun_probe,
+ .remove = rte_pmd_tap_remove,
+};
+
static struct rte_vdev_driver pmd_tap_drv = {
.probe = rte_pmd_tap_probe,
.remove = rte_pmd_tap_remove,
};
RTE_PMD_REGISTER_VDEV(net_tap, pmd_tap_drv);
+RTE_PMD_REGISTER_VDEV(net_tun, pmd_tun_drv);
RTE_PMD_REGISTER_ALIAS(net_tap, eth_tap);
+RTE_PMD_REGISTER_PARAM_STRING(net_tun,
+ ETH_TAP_IFACE_ARG "=<string> ");
RTE_PMD_REGISTER_PARAM_STRING(net_tap,
ETH_TAP_IFACE_ARG "=<string> "
- ETH_TAP_MAC_ARG "=" ETH_TAP_MAC_FIXED " "
+ ETH_TAP_MAC_ARG "=" ETH_TAP_MAC_ARG_FMT " "
ETH_TAP_REMOTE_ARG "=<string>");
git.droids-corp.org / dpdk.git / blobdiff