#include <rte_ethdev.h>
#include <rte_errno.h>
-#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#define TAP_IOV_DEFAULT_MAX 1024
static int tap_devices_count;
-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,
DEV_RX_OFFLOAD_TCP_CKSUM;
}
+static void
+tap_rxq_pool_free(struct rte_mbuf *pool)
+{
+ struct rte_mbuf *mbuf = pool;
+ uint16_t nb_segs = 1;
+
+ if (mbuf == NULL)
+ return;
+
+ while (mbuf->next) {
+ mbuf = mbuf->next;
+ nb_segs++;
+ }
+ pool->nb_segs = nb_segs;
+ rte_pktmbuf_free(pool);
+}
+
/* Callback to handle the rx burst of packets to the correct interface and
* file descriptor(s) in a multi-queue setup.
*/
if (trigger == rxq->trigger_seen)
return 0;
- if (trigger)
- rxq->trigger_seen = trigger;
+
process_private = rte_eth_devices[rxq->in_port].process_private;
- rte_compiler_barrier();
for (num_rx = 0; num_rx < nb_pkts; ) {
struct rte_mbuf *mbuf = rxq->pool;
struct rte_mbuf *seg = NULL;
goto end;
seg->next = NULL;
- rte_pktmbuf_free(mbuf);
+ tap_rxq_pool_free(mbuf);
goto end;
}
rxq->stats.ipackets += num_rx;
rxq->stats.ibytes += num_rx_bytes;
+ if (trigger && num_rx < nb_pkts)
+ rxq->trigger_seen = trigger;
+
return num_rx;
}
}
}
-static inline void
+static inline int
tap_write_mbufs(struct tx_queue *txq, uint16_t num_mbufs,
struct rte_mbuf **pmbufs,
uint16_t *num_packets, unsigned long *num_tx_bytes)
char *buff_data = rte_pktmbuf_mtod(seg, void *);
proto = (*buff_data & 0xf0);
pi.proto = (proto == 0x40) ?
- rte_cpu_to_be_16(RTE_ETHER_TYPE_IPv4) :
+ rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4) :
((proto == 0x60) ?
- rte_cpu_to_be_16(RTE_ETHER_TYPE_IPv6) :
+ rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6) :
0x00);
}
seg_len = rte_pktmbuf_data_len(mbuf);
l234_hlen = mbuf->l2_len + mbuf->l3_len + mbuf->l4_len;
if (seg_len < l234_hlen)
- break;
+ return -1;
/* To change checksums, work on a * copy of l2, l3
* headers + l4 pseudo header
/* copy the tx frame data */
n = writev(process_private->txq_fds[txq->queue_id], iovecs, j);
if (n <= 0)
- break;
+ return -1;
+
(*num_packets)++;
(*num_tx_bytes) += rte_pktmbuf_pkt_len(mbuf);
}
+ return 0;
}
/* Callback to handle sending packets from the tap interface
uint16_t num_mbufs = 0;
uint16_t tso_segsz = 0;
int ret;
+ int num_tso_mbufs;
uint16_t hdrs_len;
- int j;
uint64_t tso;
tso = mbuf_in->ol_flags & PKT_TX_TCP_SEG;
if (tso) {
struct rte_gso_ctx *gso_ctx = &txq->gso_ctx;
- assert(gso_ctx != NULL);
-
/* TCP segmentation implies TCP checksum offload */
mbuf_in->ol_flags |= PKT_TX_TCP_CKSUM;
break;
}
gso_ctx->gso_size = tso_segsz;
- ret = rte_gso_segment(mbuf_in, /* packet to segment */
+ /* 'mbuf_in' packet to segment */
+ num_tso_mbufs = rte_gso_segment(mbuf_in,
gso_ctx, /* gso control block */
(struct rte_mbuf **)&gso_mbufs, /* out mbufs */
RTE_DIM(gso_mbufs)); /* max tso mbufs */
/* ret contains the number of new created mbufs */
- if (ret < 0)
+ if (num_tso_mbufs < 0)
break;
mbuf = gso_mbufs;
- num_mbufs = ret;
+ num_mbufs = num_tso_mbufs;
} else {
/* stats.errs will be incremented */
if (rte_pktmbuf_pkt_len(mbuf_in) > max_size)
break;
/* ret 0 indicates no new mbufs were created */
- ret = 0;
+ num_tso_mbufs = 0;
mbuf = &mbuf_in;
num_mbufs = 1;
}
- tap_write_mbufs(txq, num_mbufs, mbuf,
+ ret = tap_write_mbufs(txq, num_mbufs, mbuf,
&num_packets, &num_tx_bytes);
+ if (ret == -1) {
+ txq->stats.errs++;
+ /* free tso mbufs */
+ if (num_tso_mbufs > 0)
+ rte_pktmbuf_free_bulk(mbuf, num_tso_mbufs);
+ break;
+ }
num_tx++;
/* free original mbuf */
rte_pktmbuf_free(mbuf_in);
/* free tso mbufs */
- for (j = 0; j < ret; j++)
- rte_pktmbuf_free(mbuf[j]);
+ if (num_tso_mbufs > 0)
+ rte_pktmbuf_free_bulk(mbuf, num_tso_mbufs);
}
txq->stats.opackets += num_packets;
txq->stats.errs += nb_pkts - num_tx;
txq->stats.obytes += num_tx_bytes;
- return num_packets;
+ return num_tx;
}
static const char *
case SIOCSIFMTU:
break;
default:
- RTE_LOG(WARNING, PMD, "%s: ioctl() called with wrong arg\n",
+ TAP_LOG(WARNING, "%s: ioctl() called with wrong arg",
pmd->name);
return -EINVAL;
}
return capa;
}
-static void
+static int
tap_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
{
struct pmd_internals *internals = dev->data->dev_private;
* functions together and not in partial combinations
*/
dev_info->flow_type_rss_offloads = ~TAP_RSS_HF_MASK;
+
+ return 0;
}
static int
for (i = 0; i < imax; i++) {
tap_stats->q_opackets[i] = pmd->txq[i].stats.opackets;
- tap_stats->q_errors[i] = pmd->txq[i].stats.errs;
tap_stats->q_obytes[i] = pmd->txq[i].stats.obytes;
tx_total += tap_stats->q_opackets[i];
- tx_err_total += tap_stats->q_errors[i];
+ tx_err_total += pmd->txq[i].stats.errs;
tx_bytes_total += tap_stats->q_obytes[i];
}
return 0;
}
-static void
+static int
tap_stats_reset(struct rte_eth_dev *dev)
{
int i;
pmd->txq[i].stats.errs = 0;
pmd->txq[i].stats.obytes = 0;
}
+
+ return 0;
}
static void
int i;
struct pmd_internals *internals = dev->data->dev_private;
struct pmd_process_private *process_private = dev->process_private;
+ struct rx_queue *rxq;
tap_link_set_down(dev);
- tap_flow_flush(dev, NULL);
- tap_flow_implicit_flush(internals, NULL);
+ if (internals->nlsk_fd != -1) {
+ tap_flow_flush(dev, NULL);
+ tap_flow_implicit_flush(internals, NULL);
+ tap_nl_final(internals->nlsk_fd);
+ internals->nlsk_fd = -1;
+ }
for (i = 0; i < RTE_PMD_TAP_MAX_QUEUES; i++) {
if (process_private->rxq_fds[i] != -1) {
+ rxq = &internals->rxq[i];
close(process_private->rxq_fds[i]);
process_private->rxq_fds[i] = -1;
+ tap_rxq_pool_free(rxq->pool);
+ rte_free(rxq->iovecs);
+ rxq->pool = NULL;
+ rxq->iovecs = NULL;
}
if (process_private->txq_fds[i] != -1) {
close(process_private->txq_fds[i]);
if (process_private->rxq_fds[rxq->queue_id] > 0) {
close(process_private->rxq_fds[rxq->queue_id]);
process_private->rxq_fds[rxq->queue_id] = -1;
- rte_pktmbuf_free(rxq->pool);
+ tap_rxq_pool_free(rxq->pool);
rte_free(rxq->iovecs);
rxq->pool = NULL;
rxq->iovecs = NULL;
return 0;
}
-static void
+static int
tap_promisc_enable(struct rte_eth_dev *dev)
{
struct pmd_internals *pmd = dev->data->dev_private;
struct ifreq ifr = { .ifr_flags = IFF_PROMISC };
+ int ret;
+
+ ret = tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 1, LOCAL_AND_REMOTE);
+ if (ret != 0)
+ return ret;
+
+ if (pmd->remote_if_index && !pmd->flow_isolate) {
+ dev->data->promiscuous = 1;
+ ret = tap_flow_implicit_create(pmd, TAP_REMOTE_PROMISC);
+ if (ret != 0) {
+ /* Rollback promisc flag */
+ tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
+ /*
+ * rte_eth_dev_promiscuous_enable() rollback
+ * dev->data->promiscuous in the case of failure.
+ */
+ return ret;
+ }
+ }
- dev->data->promiscuous = 1;
- tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 1, LOCAL_AND_REMOTE);
- if (pmd->remote_if_index && !pmd->flow_isolate)
- tap_flow_implicit_create(pmd, TAP_REMOTE_PROMISC);
+ return 0;
}
-static void
+static int
tap_promisc_disable(struct rte_eth_dev *dev)
{
struct pmd_internals *pmd = dev->data->dev_private;
struct ifreq ifr = { .ifr_flags = IFF_PROMISC };
+ int ret;
+
+ ret = tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
+ if (ret != 0)
+ return ret;
+
+ if (pmd->remote_if_index && !pmd->flow_isolate) {
+ dev->data->promiscuous = 0;
+ ret = tap_flow_implicit_destroy(pmd, TAP_REMOTE_PROMISC);
+ if (ret != 0) {
+ /* Rollback promisc flag */
+ tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 1, LOCAL_AND_REMOTE);
+ /*
+ * rte_eth_dev_promiscuous_disable() rollback
+ * dev->data->promiscuous in the case of failure.
+ */
+ return ret;
+ }
+ }
- dev->data->promiscuous = 0;
- tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
- if (pmd->remote_if_index && !pmd->flow_isolate)
- tap_flow_implicit_destroy(pmd, TAP_REMOTE_PROMISC);
+ return 0;
}
-static void
+static int
tap_allmulti_enable(struct rte_eth_dev *dev)
{
struct pmd_internals *pmd = dev->data->dev_private;
struct ifreq ifr = { .ifr_flags = IFF_ALLMULTI };
+ int ret;
+
+ ret = tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 1, LOCAL_AND_REMOTE);
+ if (ret != 0)
+ return ret;
+
+ if (pmd->remote_if_index && !pmd->flow_isolate) {
+ dev->data->all_multicast = 1;
+ ret = tap_flow_implicit_create(pmd, TAP_REMOTE_ALLMULTI);
+ if (ret != 0) {
+ /* Rollback allmulti flag */
+ tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
+ /*
+ * rte_eth_dev_allmulticast_enable() rollback
+ * dev->data->all_multicast in the case of failure.
+ */
+ return ret;
+ }
+ }
- dev->data->all_multicast = 1;
- tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 1, LOCAL_AND_REMOTE);
- if (pmd->remote_if_index && !pmd->flow_isolate)
- tap_flow_implicit_create(pmd, TAP_REMOTE_ALLMULTI);
+ return 0;
}
-static void
+static int
tap_allmulti_disable(struct rte_eth_dev *dev)
{
struct pmd_internals *pmd = dev->data->dev_private;
struct ifreq ifr = { .ifr_flags = IFF_ALLMULTI };
+ int ret;
+
+ ret = tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
+ if (ret != 0)
+ return ret;
+
+ if (pmd->remote_if_index && !pmd->flow_isolate) {
+ dev->data->all_multicast = 0;
+ ret = tap_flow_implicit_destroy(pmd, TAP_REMOTE_ALLMULTI);
+ if (ret != 0) {
+ /* Rollback allmulti flag */
+ tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 1, LOCAL_AND_REMOTE);
+ /*
+ * rte_eth_dev_allmulticast_disable() rollback
+ * dev->data->all_multicast in the case of failure.
+ */
+ return ret;
+ }
+ }
- dev->data->all_multicast = 0;
- tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
- if (pmd->remote_if_index && !pmd->flow_isolate)
- tap_flow_implicit_destroy(pmd, TAP_REMOTE_ALLMULTI);
+ return 0;
}
static int
SOCKET_ID_ANY);
if (!mp) {
struct pmd_internals *pmd = dev->data->dev_private;
- RTE_LOG(DEBUG, PMD, "%s: failed to create mbuf pool for device %s\n",
+
+ TAP_LOG(ERR,
+ "%s: failed to create mbuf pool for device %s\n",
pmd->name, dev->device->name);
return -1;
}
return 0;
error:
- rte_pktmbuf_free(rxq->pool);
+ tap_rxq_pool_free(rxq->pool);
rxq->pool = NULL;
rte_free(rxq->iovecs);
rxq->iovecs = NULL;
int err;
err = tap_lsc_intr_handle_set(dev, set);
- if (err)
+ if (err < 0) {
+ if (!set)
+ tap_rx_intr_vec_set(dev, 0);
return err;
+ }
err = tap_rx_intr_vec_set(dev, set);
if (err && set)
tap_lsc_intr_handle_set(dev, 0);
pmd->dev = dev;
strlcpy(pmd->name, tap_name, sizeof(pmd->name));
pmd->type = type;
+ pmd->ka_fd = -1;
+ pmd->nlsk_fd = -1;
pmd->ioctl_sock = socket(AF_INET, SOCK_DGRAM, 0);
if (pmd->ioctl_sock == -1) {
dev->intr_handle = &pmd->intr_handle;
/* Presetup the fds to -1 as being not valid */
- pmd->ka_fd = -1;
for (i = 0; i < RTE_PMD_TAP_MAX_QUEUES; i++) {
process_private->rxq_fds[i] = -1;
process_private->txq_fds[i] = -1;
tap_flow_implicit_flush(pmd, NULL);
error_exit:
- if (pmd->ioctl_sock > 0)
+ if (pmd->nlsk_fd != -1)
+ close(pmd->nlsk_fd);
+ if (pmd->ka_fd != -1)
+ close(pmd->ka_fd);
+ if (pmd->ioctl_sock != -1)
close(pmd->ioctl_sock);
/* mac_addrs must not be freed alone because part of dev_private */
dev->data->mac_addrs = NULL;
/* Register IPC feed callback */
if (!tap_devices_count) {
ret = rte_mp_action_register(TAP_MP_KEY, tap_mp_sync_queues);
- if (ret < 0) {
+ if (ret < 0 && rte_errno != ENOTSUP) {
TAP_LOG(ERR, "tap: Failed to register IPC callback: %s",
strerror(rte_errno));
goto leave;
{
struct rte_eth_dev *eth_dev = NULL;
struct pmd_internals *internals;
- struct pmd_process_private *process_private;
- int i;
/* find the ethdev entry */
eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev));
if (rte_eal_process_type() != RTE_PROC_PRIMARY)
return rte_eth_dev_release_port(eth_dev);
- internals = eth_dev->data->dev_private;
- process_private = eth_dev->process_private;
+ tap_dev_close(eth_dev);
+ internals = eth_dev->data->dev_private;
TAP_LOG(DEBUG, "Closing %s Ethernet device on numa %u",
tuntap_types[internals->type], rte_socket_id());
- if (internals->nlsk_fd) {
- tap_flow_flush(eth_dev, NULL);
- tap_flow_implicit_flush(internals, NULL);
- tap_nl_final(internals->nlsk_fd);
- }
- for (i = 0; i < RTE_PMD_TAP_MAX_QUEUES; i++) {
- if (process_private->rxq_fds[i] != -1) {
- close(process_private->rxq_fds[i]);
- process_private->rxq_fds[i] = -1;
- }
- if (process_private->txq_fds[i] != -1) {
- close(process_private->txq_fds[i]);
- process_private->txq_fds[i] = -1;
- }
- }
-
close(internals->ioctl_sock);
rte_free(eth_dev->process_private);
if (tap_devices_count == 1)
tap_devices_count--;
rte_eth_dev_release_port(eth_dev);
- if (internals->ka_fd != -1) {
- close(internals->ka_fd);
- internals->ka_fd = -1;
- }
return 0;
}
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