/*
* Copyright (c) 2011, 2013 Gaetano Catalli.
- * Copyright (c) 2013 YAMAMOTO Takashi.
+ * Copyright (c) 2013, 2014 YAMAMOTO Takashi.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include "rtbsd.h"
#include "coverage.h"
+#include "dpif-netdev.h"
#include "dynamic-string.h"
#include "fatal-signal.h"
#include "ofpbuf.h"
#include "ovs-thread.h"
#include "packets.h"
#include "poll-loop.h"
-#include "socket-util.h"
#include "shash.h"
+#include "socket-util.h"
#include "svec.h"
#include "util.h"
#include "vlog.h"
VLOG_DEFINE_THIS_MODULE(netdev_bsd);
\f
-struct netdev_rx_bsd {
- struct netdev_rx up;
+struct netdev_rxq_bsd {
+ struct netdev_rxq up;
/* Packet capture descriptor for a system network device.
* For a tap device this is NULL. */
struct ovs_mutex mutex;
unsigned int cache_valid;
- unsigned int change_seq;
int ifindex;
uint8_t etheraddr[ETH_ADDR_LEN];
#endif
static void netdev_bsd_run(void);
+static int netdev_bsd_get_mtu(const struct netdev *netdev_, int *mtup);
static bool
is_netdev_bsd_class(const struct netdev_class *netdev_class)
return CONTAINER_OF(netdev, struct netdev_bsd, up);
}
-static struct netdev_rx_bsd *
-netdev_rx_bsd_cast(const struct netdev_rx *rx)
+static struct netdev_rxq_bsd *
+netdev_rxq_bsd_cast(const struct netdev_rxq *rxq)
{
- ovs_assert(is_netdev_bsd_class(netdev_get_class(rx->netdev)));
- return CONTAINER_OF(rx, struct netdev_rx_bsd, up);
+ ovs_assert(is_netdev_bsd_class(netdev_get_class(rxq->netdev)));
+ return CONTAINER_OF(rxq, struct netdev_rxq_bsd, up);
}
static const char *
rtbsd_notifier_wait();
}
-static void
-netdev_bsd_changed(struct netdev_bsd *dev)
-{
- dev->change_seq++;
- if (!dev->change_seq) {
- dev->change_seq++;
- }
-}
-
/* Invalidate cache in case of interface status change. */
static void
netdev_bsd_cache_cb(const struct rtbsd_change *change,
if (is_netdev_bsd_class(netdev_class)) {
dev = netdev_bsd_cast(base_dev);
dev->cache_valid = 0;
- netdev_bsd_changed(dev);
+ netdev_change_seq_changed(base_dev);
}
netdev_close(base_dev);
}
struct netdev *netdev = node->data;
dev = netdev_bsd_cast(netdev);
dev->cache_valid = 0;
- netdev_bsd_changed(dev);
+ netdev_change_seq_changed(netdev);
netdev_close(netdev);
}
shash_destroy(&device_shash);
}
ovs_mutex_init(&netdev->mutex);
- netdev->change_seq = 1;
netdev->tap_fd = -1;
netdev->kernel_name = xstrdup(netdev_->name);
* to retrieve the name of the tap device. */
ovs_mutex_init(&netdev->mutex);
netdev->tap_fd = open("/dev/tap", O_RDWR);
- netdev->change_seq = 1;
if (netdev->tap_fd < 0) {
error = errno;
VLOG_WARN("opening \"/dev/tap\" failed: %s", ovs_strerror(error));
return error;
}
-static struct netdev_rx *
-netdev_bsd_rx_alloc(void)
+static struct netdev_rxq *
+netdev_bsd_rxq_alloc(void)
{
- struct netdev_rx_bsd *rx = xzalloc(sizeof *rx);
- return &rx->up;
+ struct netdev_rxq_bsd *rxq = xzalloc(sizeof *rxq);
+ return &rxq->up;
}
static int
-netdev_bsd_rx_construct(struct netdev_rx *rx_)
+netdev_bsd_rxq_construct(struct netdev_rxq *rxq_)
{
- struct netdev_rx_bsd *rx = netdev_rx_bsd_cast(rx_);
- struct netdev *netdev_ = rx->up.netdev;
+ struct netdev_rxq_bsd *rxq = netdev_rxq_bsd_cast(rxq_);
+ struct netdev *netdev_ = rxq->up.netdev;
struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
int error;
if (!strcmp(netdev_get_type(netdev_), "tap")) {
- rx->pcap_handle = NULL;
- rx->fd = netdev->tap_fd;
+ rxq->pcap_handle = NULL;
+ rxq->fd = netdev->tap_fd;
error = 0;
} else {
ovs_mutex_lock(&netdev->mutex);
error = netdev_bsd_open_pcap(netdev_get_kernel_name(netdev_),
- &rx->pcap_handle, &rx->fd);
- if (!error) {
- netdev_bsd_changed(netdev);
- }
+ &rxq->pcap_handle, &rxq->fd);
ovs_mutex_unlock(&netdev->mutex);
}
}
static void
-netdev_bsd_rx_destruct(struct netdev_rx *rx_)
+netdev_bsd_rxq_destruct(struct netdev_rxq *rxq_)
{
- struct netdev_rx_bsd *rx = netdev_rx_bsd_cast(rx_);
+ struct netdev_rxq_bsd *rxq = netdev_rxq_bsd_cast(rxq_);
- if (rx->pcap_handle) {
- pcap_close(rx->pcap_handle);
+ if (rxq->pcap_handle) {
+ pcap_close(rxq->pcap_handle);
}
}
static void
-netdev_bsd_rx_dealloc(struct netdev_rx *rx_)
+netdev_bsd_rxq_dealloc(struct netdev_rxq *rxq_)
{
- struct netdev_rx_bsd *rx = netdev_rx_bsd_cast(rx_);
+ struct netdev_rxq_bsd *rxq = netdev_rxq_bsd_cast(rxq_);
- free(rx);
+ free(rxq);
}
/* The recv callback of the netdev class returns the number of bytes of the
* This function attempts to receive a packet from the specified network
* device. It is assumed that the network device is a system device or a tap
* device opened as a system one. In this case the read operation is performed
- * from rx->pcap.
+ * from rxq->pcap.
*/
static int
-netdev_rx_bsd_recv_pcap(struct netdev_rx_bsd *rx, void *data, size_t size)
+netdev_rxq_bsd_recv_pcap(struct netdev_rxq_bsd *rxq, struct ofpbuf *buffer)
{
struct pcap_arg arg;
int ret;
/* prepare the pcap argument to store the packet */
- arg.size = size;
- arg.data = data;
+ arg.size = ofpbuf_tailroom(buffer);
+ arg.data = ofpbuf_data(buffer);
for (;;) {
- ret = pcap_dispatch(rx->pcap_handle, 1, proc_pkt, (u_char *) &arg);
+ ret = pcap_dispatch(rxq->pcap_handle, 1, proc_pkt, (u_char *) &arg);
if (ret > 0) {
- return arg.retval; /* arg.retval < 0 is handled in the caller */
+ ofpbuf_set_size(buffer, ofpbuf_size(buffer) + arg.retval);
+ return 0;
}
if (ret == -1) {
if (errno == EINTR) {
}
}
- return -EAGAIN;
+ return EAGAIN;
}
}
/*
* This function attempts to receive a packet from the specified network
* device. It is assumed that the network device is a tap device and
- * 'rx->fd' is initialized with the tap file descriptor.
+ * 'rxq->fd' is initialized with the tap file descriptor.
*/
static int
-netdev_rx_bsd_recv_tap(struct netdev_rx_bsd *rx, void *data, size_t size)
+netdev_rxq_bsd_recv_tap(struct netdev_rxq_bsd *rxq, struct ofpbuf *buffer)
{
+ size_t size = ofpbuf_tailroom(buffer);
+
for (;;) {
- ssize_t retval = read(rx->fd, data, size);
+ ssize_t retval = read(rxq->fd, ofpbuf_data(buffer), size);
if (retval >= 0) {
- return retval;
+ ofpbuf_set_size(buffer, ofpbuf_size(buffer) + retval);
+ return 0;
} else if (errno != EINTR) {
if (errno != EAGAIN) {
VLOG_WARN_RL(&rl, "error receiving Ethernet packet on %s: %s",
- ovs_strerror(errno), netdev_rx_get_name(&rx->up));
+ ovs_strerror(errno), netdev_rxq_get_name(&rxq->up));
}
- return -errno;
+ return errno;
}
}
}
static int
-netdev_bsd_rx_recv(struct netdev_rx *rx_, void *data, size_t size)
+netdev_bsd_rxq_recv(struct netdev_rxq *rxq_, struct ofpbuf **packet, int *c)
{
- struct netdev_rx_bsd *rx = netdev_rx_bsd_cast(rx_);
+ struct netdev_rxq_bsd *rxq = netdev_rxq_bsd_cast(rxq_);
+ struct netdev *netdev = rxq->up.netdev;
+ struct ofpbuf *buffer;
+ ssize_t retval;
+ int mtu;
+
+ if (netdev_bsd_get_mtu(netdev, &mtu)) {
+ mtu = ETH_PAYLOAD_MAX;
+ }
- return (rx->pcap_handle
- ? netdev_rx_bsd_recv_pcap(rx, data, size)
- : netdev_rx_bsd_recv_tap(rx, data, size));
+ buffer = ofpbuf_new_with_headroom(VLAN_ETH_HEADER_LEN + mtu, DP_NETDEV_HEADROOM);
+
+ retval = (rxq->pcap_handle
+ ? netdev_rxq_bsd_recv_pcap(rxq, buffer)
+ : netdev_rxq_bsd_recv_tap(rxq, buffer));
+
+ if (retval) {
+ ofpbuf_delete(buffer);
+ } else {
+ dp_packet_pad(buffer);
+ packet[0] = buffer;
+ *c = 1;
+ }
+ return retval;
}
/*
* Registers with the poll loop to wake up from the next call to poll_block()
- * when a packet is ready to be received with netdev_rx_recv() on 'rx'.
+ * when a packet is ready to be received with netdev_rxq_recv() on 'rxq'.
*/
static void
-netdev_bsd_rx_wait(struct netdev_rx *rx_)
+netdev_bsd_rxq_wait(struct netdev_rxq *rxq_)
{
- struct netdev_rx_bsd *rx = netdev_rx_bsd_cast(rx_);
+ struct netdev_rxq_bsd *rxq = netdev_rxq_bsd_cast(rxq_);
- poll_fd_wait(rx->fd, POLLIN);
+ poll_fd_wait(rxq->fd, POLLIN);
}
-/* Discards all packets waiting to be received from 'rx'. */
+/* Discards all packets waiting to be received from 'rxq'. */
static int
-netdev_bsd_rx_drain(struct netdev_rx *rx_)
+netdev_bsd_rxq_drain(struct netdev_rxq *rxq_)
{
struct ifreq ifr;
- struct netdev_rx_bsd *rx = netdev_rx_bsd_cast(rx_);
+ struct netdev_rxq_bsd *rxq = netdev_rxq_bsd_cast(rxq_);
- strcpy(ifr.ifr_name, netdev_get_kernel_name(netdev_rx_get_netdev(rx_)));
- if (ioctl(rx->fd, BIOCFLUSH, &ifr) == -1) {
+ strcpy(ifr.ifr_name, netdev_get_kernel_name(netdev_rxq_get_netdev(rxq_)));
+ if (ioctl(rxq->fd, BIOCFLUSH, &ifr) == -1) {
VLOG_DBG_RL(&rl, "%s: ioctl(BIOCFLUSH) failed: %s",
- netdev_rx_get_name(rx_), ovs_strerror(errno));
+ netdev_rxq_get_name(rxq_), ovs_strerror(errno));
return errno;
}
return 0;
* system or a tap device.
*/
static int
-netdev_bsd_send(struct netdev *netdev_, const void *data, size_t size)
+netdev_bsd_send(struct netdev *netdev_, struct ofpbuf *pkt, bool may_steal)
{
struct netdev_bsd *dev = netdev_bsd_cast(netdev_);
const char *name = netdev_get_name(netdev_);
+ const void *data = ofpbuf_data(pkt);
+ size_t size = ofpbuf_size(pkt);
int error;
ovs_mutex_lock(&dev->mutex);
}
}
} else if (retval != size) {
- VLOG_WARN_RL(&rl, "sent partial Ethernet packet (%zd bytes of "
- "%zu) on %s", retval, size, name);
+ VLOG_WARN_RL(&rl, "sent partial Ethernet packet (%"PRIuSIZE"d bytes of "
+ "%"PRIuSIZE") on %s", retval, size, name);
error = EMSGSIZE;
} else {
break;
}
ovs_mutex_unlock(&dev->mutex);
+ if (may_steal) {
+ ofpbuf_delete(pkt);
+ }
+
return error;
}
if (!error) {
netdev->cache_valid |= VALID_ETHERADDR;
memcpy(netdev->etheraddr, mac, ETH_ADDR_LEN);
- netdev_bsd_changed(netdev);
+ netdev_change_seq_changed(netdev_);
}
}
ovs_mutex_unlock(&netdev->mutex);
}
static void
-convert_stats(struct netdev_stats *stats, const struct if_data *ifd)
+convert_stats_system(struct netdev_stats *stats, const struct if_data *ifd)
{
/*
* note: UINT64_MAX means unsupported
stats->tx_window_errors = UINT64_MAX;
}
+static void
+convert_stats_tap(struct netdev_stats *stats, const struct if_data *ifd)
+{
+ /*
+ * Similar to convert_stats_system but swapping rxq and tx
+ * because 'ifd' is stats for the network interface side of the
+ * tap device and what the caller wants is one for the character
+ * device side.
+ *
+ * note: UINT64_MAX means unsupported
+ */
+ stats->rx_packets = ifd->ifi_opackets;
+ stats->tx_packets = ifd->ifi_ipackets;
+ stats->rx_bytes = ifd->ifi_ibytes;
+ stats->tx_bytes = ifd->ifi_obytes;
+ stats->rx_errors = ifd->ifi_oerrors;
+ stats->tx_errors = ifd->ifi_ierrors;
+ stats->rx_dropped = UINT64_MAX;
+ stats->tx_dropped = ifd->ifi_iqdrops;
+ stats->multicast = ifd->ifi_omcasts;
+ stats->collisions = UINT64_MAX;
+ stats->rx_length_errors = UINT64_MAX;
+ stats->rx_over_errors = UINT64_MAX;
+ stats->rx_crc_errors = UINT64_MAX;
+ stats->rx_frame_errors = UINT64_MAX;
+ stats->rx_fifo_errors = UINT64_MAX;
+ stats->rx_missed_errors = UINT64_MAX;
+ stats->tx_aborted_errors = UINT64_MAX;
+ stats->tx_carrier_errors = UINT64_MAX;
+ stats->tx_fifo_errors = UINT64_MAX;
+ stats->tx_heartbeat_errors = UINT64_MAX;
+ stats->tx_window_errors = UINT64_MAX;
+}
+
+static void
+convert_stats(const struct netdev *netdev, struct netdev_stats *stats,
+ const struct if_data *ifd)
+{
+ if (netdev_bsd_cast(netdev)->tap_fd == -1) {
+ convert_stats_system(stats, ifd);
+ } else {
+ convert_stats_tap(stats, ifd);
+ }
+}
+
/* Retrieves current device stats for 'netdev'. */
static int
netdev_bsd_get_stats(const struct netdev *netdev_, struct netdev_stats *stats)
netdev_get_name(netdev_), ovs_strerror(errno));
return errno;
} else if (!strcmp(ifmd.ifmd_name, netdev_get_name(netdev_))) {
- convert_stats(stats, &ifmd.ifmd_data);
+ convert_stats(netdev, stats, &ifdr.ifdr_data);
break;
}
}
sizeof(ifdr.ifdr_name));
error = af_link_ioctl(SIOCGIFDATA, &ifdr);
if (!error) {
- convert_stats(stats, &ifdr.ifdr_data);
+ convert_stats(netdev_, stats, &ifdr.ifdr_data);
}
return error;
#else
netdev->netmask = mask;
}
}
- netdev_bsd_changed(netdev);
+ netdev_change_seq_changed(netdev_);
}
ovs_mutex_unlock(&netdev->mutex);
iff |= IFF_PPROMISC;
#endif
}
+ if (nd & NETDEV_LOOPBACK) {
+ iff |= IFF_LOOPBACK;
+ }
return iff;
}
if (iff & IFF_PROMISC) {
nd |= NETDEV_PROMISC;
}
+ if (iff & IFF_LOOPBACK) {
+ nd |= NETDEV_LOOPBACK;
+ }
return nd;
}
netdev_bsd_update_flags(struct netdev *netdev_, enum netdev_flags off,
enum netdev_flags on, enum netdev_flags *old_flagsp)
{
- struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
int old_flags, new_flags;
int error;
new_flags = (old_flags & ~nd_to_iff_flags(off)) | nd_to_iff_flags(on);
if (new_flags != old_flags) {
error = set_flags(netdev_get_kernel_name(netdev_), new_flags);
- netdev_bsd_changed(netdev);
+ netdev_change_seq_changed(netdev_);
}
}
return error;
}
-static unsigned int
-netdev_bsd_change_seq(const struct netdev *netdev)
-{
- return netdev_bsd_cast(netdev)->change_seq;
+/* Linux has also different GET_STATS, SET_STATS,
+ * GET_STATUS)
+ */
+#define NETDEV_BSD_CLASS(NAME, CONSTRUCT, \
+ GET_FEATURES) \
+{ \
+ NAME, \
+ \
+ NULL, /* init */ \
+ netdev_bsd_run, \
+ netdev_bsd_wait, \
+ netdev_bsd_alloc, \
+ CONSTRUCT, \
+ netdev_bsd_destruct, \
+ netdev_bsd_dealloc, \
+ NULL, /* get_config */ \
+ NULL, /* set_config */ \
+ NULL, /* get_tunnel_config */ \
+ \
+ netdev_bsd_send, \
+ netdev_bsd_send_wait, \
+ \
+ netdev_bsd_set_etheraddr, \
+ netdev_bsd_get_etheraddr, \
+ netdev_bsd_get_mtu, \
+ NULL, /* set_mtu */ \
+ netdev_bsd_get_ifindex, \
+ netdev_bsd_get_carrier, \
+ NULL, /* get_carrier_resets */ \
+ NULL, /* set_miimon_interval */ \
+ netdev_bsd_get_stats, \
+ NULL, /* set_stats */ \
+ \
+ GET_FEATURES, \
+ NULL, /* set_advertisement */ \
+ NULL, /* set_policing */ \
+ NULL, /* get_qos_type */ \
+ NULL, /* get_qos_capabilities */ \
+ NULL, /* get_qos */ \
+ NULL, /* set_qos */ \
+ NULL, /* get_queue */ \
+ NULL, /* set_queue */ \
+ NULL, /* delete_queue */ \
+ NULL, /* get_queue_stats */ \
+ NULL, /* queue_dump_start */ \
+ NULL, /* queue_dump_next */ \
+ NULL, /* queue_dump_done */ \
+ NULL, /* dump_queue_stats */ \
+ \
+ netdev_bsd_get_in4, \
+ netdev_bsd_set_in4, \
+ netdev_bsd_get_in6, \
+ NULL, /* add_router */ \
+ netdev_bsd_get_next_hop, \
+ NULL, /* get_status */ \
+ netdev_bsd_arp_lookup, /* arp_lookup */ \
+ \
+ netdev_bsd_update_flags, \
+ \
+ netdev_bsd_rxq_alloc, \
+ netdev_bsd_rxq_construct, \
+ netdev_bsd_rxq_destruct, \
+ netdev_bsd_rxq_dealloc, \
+ netdev_bsd_rxq_recv, \
+ netdev_bsd_rxq_wait, \
+ netdev_bsd_rxq_drain, \
}
-
-const struct netdev_class netdev_bsd_class = {
- "system",
-
- NULL, /* init */
- netdev_bsd_run,
- netdev_bsd_wait,
- netdev_bsd_alloc,
- netdev_bsd_construct_system,
- netdev_bsd_destruct,
- netdev_bsd_dealloc,
- NULL, /* get_config */
- NULL, /* set_config */
- NULL, /* get_tunnel_config */
-
- netdev_bsd_send,
- netdev_bsd_send_wait,
-
- netdev_bsd_set_etheraddr,
- netdev_bsd_get_etheraddr,
- netdev_bsd_get_mtu,
- NULL, /* set_mtu */
- netdev_bsd_get_ifindex,
- netdev_bsd_get_carrier,
- NULL, /* get_carrier_resets */
- NULL, /* set_miimon_interval */
- netdev_bsd_get_stats,
- NULL, /* set_stats */
-
- netdev_bsd_get_features,
- NULL, /* set_advertisement */
- NULL, /* set_policing */
- NULL, /* get_qos_type */
- NULL, /* get_qos_capabilities */
- NULL, /* get_qos */
- NULL, /* set_qos */
- NULL, /* get_queue */
- NULL, /* set_queue */
- NULL, /* delete_queue */
- NULL, /* get_queue_stats */
- NULL, /* queue_dump_start */
- NULL, /* queue_dump_next */
- NULL, /* queue_dump_done */
- NULL, /* dump_queue_stats */
-
- netdev_bsd_get_in4,
- netdev_bsd_set_in4,
- netdev_bsd_get_in6,
- NULL, /* add_router */
- netdev_bsd_get_next_hop,
- NULL, /* get_status */
- netdev_bsd_arp_lookup, /* arp_lookup */
-
- netdev_bsd_update_flags,
-
- netdev_bsd_change_seq,
-
- netdev_bsd_rx_alloc,
- netdev_bsd_rx_construct,
- netdev_bsd_rx_destruct,
- netdev_bsd_rx_dealloc,
- netdev_bsd_rx_recv,
- netdev_bsd_rx_wait,
- netdev_bsd_rx_drain,
-};
-
-const struct netdev_class netdev_tap_class = {
- "tap",
-
- NULL, /* init */
- netdev_bsd_run,
- netdev_bsd_wait,
- netdev_bsd_alloc,
- netdev_bsd_construct_tap,
- netdev_bsd_destruct,
- netdev_bsd_dealloc,
- NULL, /* get_config */
- NULL, /* set_config */
- NULL, /* get_tunnel_config */
-
- netdev_bsd_send,
- netdev_bsd_send_wait,
-
- netdev_bsd_set_etheraddr,
- netdev_bsd_get_etheraddr,
- netdev_bsd_get_mtu,
- NULL, /* set_mtu */
- netdev_bsd_get_ifindex,
- netdev_bsd_get_carrier,
- NULL, /* get_carrier_resets */
- NULL, /* set_miimon_interval */
- netdev_bsd_get_stats,
- NULL, /* set_stats */
-
- netdev_bsd_get_features,
- NULL, /* set_advertisement */
- NULL, /* set_policing */
- NULL, /* get_qos_type */
- NULL, /* get_qos_capabilities */
- NULL, /* get_qos */
- NULL, /* set_qos */
- NULL, /* get_queue */
- NULL, /* set_queue */
- NULL, /* delete_queue */
- NULL, /* get_queue_stats */
- NULL, /* queue_dump_start */
- NULL, /* queue_dump_next */
- NULL, /* queue_dump_done */
- NULL, /* dump_queue_stats */
-
- netdev_bsd_get_in4,
- netdev_bsd_set_in4,
- netdev_bsd_get_in6,
- NULL, /* add_router */
- netdev_bsd_get_next_hop,
- NULL, /* get_status */
- netdev_bsd_arp_lookup, /* arp_lookup */
-
- netdev_bsd_update_flags,
-
- netdev_bsd_change_seq,
-
- netdev_bsd_rx_alloc,
- netdev_bsd_rx_construct,
- netdev_bsd_rx_destruct,
- netdev_bsd_rx_dealloc,
- netdev_bsd_rx_recv,
- netdev_bsd_rx_wait,
- netdev_bsd_rx_drain,
-};
+const struct netdev_class netdev_bsd_class =
+ NETDEV_BSD_CLASS(
+ "system",
+ netdev_bsd_construct_system,
+ netdev_bsd_get_features);
+
+const struct netdev_class netdev_tap_class =
+ NETDEV_BSD_CLASS(
+ "tap",
+ netdev_bsd_construct_tap,
+ netdev_bsd_get_features);
\f
static void
git://git.onelab.eu / sliver-openvswitch.git / blobdiff