#include "netdev-provider.h"
#include "netdev-vport.h"
#include "netlink.h"
+#include "netlink-notifier.h"
#include "netlink-socket.h"
#include "ofpbuf.h"
#include "openflow/openflow.h"
#include "packets.h"
#include "poll-loop.h"
-#include "rtnetlink.h"
#include "rtnetlink-link.h"
#include "socket-util.h"
#include "shash.h"
#define ADVERTISED_Asym_Pause (1 << 14)
#endif
+/* These were introduced in Linux 2.6.24, so they might be missing if we
+ * have old headers. */
+#ifndef ETHTOOL_GFLAGS
+#define ETHTOOL_GFLAGS 0x00000025 /* Get flags bitmap(ethtool_value) */
+#endif
+#ifndef ETHTOOL_SFLAGS
+#define ETHTOOL_SFLAGS 0x00000026 /* Set flags bitmap(ethtool_value) */
+#endif
+
/* This was introduced in Linux 2.6.25, so it might be missing if we have old
* headers. */
#ifndef TC_RTAB_SIZE
/* Creates system and internal devices. */
static int
-netdev_linux_create(const struct netdev_class *class,
- const char *name, const struct shash *args,
- struct netdev_dev **netdev_devp)
+netdev_linux_create(const struct netdev_class *class, const char *name,
+ struct netdev_dev **netdev_devp)
{
struct netdev_dev_linux *netdev_dev;
int error;
- if (!shash_is_empty(args)) {
- VLOG_WARN("%s: arguments for %s devices should be empty",
- name, class->type);
- }
-
if (!cache_notifier_refcount) {
error = rtnetlink_link_notifier_register(&netdev_linux_cache_notifier,
netdev_linux_cache_cb, NULL);
netdev_dev = xzalloc(sizeof *netdev_dev);
netdev_dev->change_seq = 1;
- netdev_dev_init(&netdev_dev->netdev_dev, name, args, class);
+ netdev_dev_init(&netdev_dev->netdev_dev, name, class);
*netdev_devp = &netdev_dev->netdev_dev;
return 0;
* be unavailable to other reads for tap devices. */
static int
netdev_linux_create_tap(const struct netdev_class *class OVS_UNUSED,
- const char *name, const struct shash *args,
- struct netdev_dev **netdev_devp)
+ const char *name, struct netdev_dev **netdev_devp)
{
struct netdev_dev_linux *netdev_dev;
struct tap_state *state;
struct ifreq ifr;
int error;
- if (!shash_is_empty(args)) {
- VLOG_WARN("%s: arguments for TAP devices should be empty", name);
- }
-
netdev_dev = xzalloc(sizeof *netdev_dev);
state = &netdev_dev->state.tap;
goto error;
}
- netdev_dev_init(&netdev_dev->netdev_dev, name, args, &netdev_tap_class);
+ netdev_dev_init(&netdev_dev->netdev_dev, name, &netdev_tap_class);
*netdev_devp = &netdev_dev->netdev_dev;
return 0;
}
static int
-netdev_linux_open(struct netdev_dev *netdev_dev_, int ethertype,
- struct netdev **netdevp)
+netdev_linux_open(struct netdev_dev *netdev_dev_, struct netdev **netdevp)
{
struct netdev_dev_linux *netdev_dev = netdev_dev_linux_cast(netdev_dev_);
struct netdev_linux *netdev;
* directions appearing to be reversed. */
netdev->fd = netdev_dev->state.tap.fd;
netdev_dev->state.tap.opened = true;
- } else if (ethertype != NETDEV_ETH_TYPE_NONE) {
- struct sockaddr_ll sll;
- int protocol;
- int ifindex;
-
- /* Create file descriptor. */
- protocol = (ethertype == NETDEV_ETH_TYPE_ANY ? ETH_P_ALL
- : ethertype == NETDEV_ETH_TYPE_802_2 ? ETH_P_802_2
- : ethertype);
- netdev->fd = socket(PF_PACKET, SOCK_RAW,
- (OVS_FORCE int) htons(protocol));
- if (netdev->fd < 0) {
- error = errno;
- goto error;
- }
-
- /* Set non-blocking mode. */
- error = set_nonblocking(netdev->fd);
- if (error) {
- goto error;
- }
-
- /* Get ethernet device index. */
- error = get_ifindex(&netdev->netdev, &ifindex);
- if (error) {
- goto error;
- }
-
- /* Bind to specific ethernet device. */
- memset(&sll, 0, sizeof sll);
- sll.sll_family = AF_PACKET;
- sll.sll_ifindex = ifindex;
- if (bind(netdev->fd,
- (struct sockaddr *) &sll, sizeof sll) < 0) {
- error = errno;
- VLOG_ERR("bind to %s failed: %s", netdev_dev_get_name(netdev_dev_),
- strerror(error));
- goto error;
- }
-
- /* Between the socket() and bind() calls above, the socket receives all
- * packets of the requested type on all system interfaces. We do not
- * want to receive that data, but there is no way to avoid it. So we
- * must now drain out the receive queue. */
- error = drain_rcvbuf(netdev->fd);
- if (error) {
- goto error;
- }
}
*netdevp = &netdev->netdev;
}
}
+static int
+netdev_linux_listen(struct netdev *netdev_)
+{
+ struct netdev_linux *netdev = netdev_linux_cast(netdev_);
+ struct sockaddr_ll sll;
+ int ifindex;
+ int error;
+ int fd;
+
+ if (netdev->fd >= 0) {
+ return 0;
+ }
+
+ /* Create file descriptor. */
+ fd = socket(PF_PACKET, SOCK_RAW, 0);
+ if (fd < 0) {
+ error = errno;
+ VLOG_ERR("failed to create raw socket (%s)", strerror(error));
+ goto error;
+ }
+
+ /* Set non-blocking mode. */
+ error = set_nonblocking(fd);
+ if (error) {
+ goto error;
+ }
+
+ /* Get ethernet device index. */
+ error = get_ifindex(&netdev->netdev, &ifindex);
+ if (error) {
+ goto error;
+ }
+
+ /* Bind to specific ethernet device. */
+ memset(&sll, 0, sizeof sll);
+ sll.sll_family = AF_PACKET;
+ sll.sll_ifindex = ifindex;
+ sll.sll_protocol = (OVS_FORCE unsigned short int) htons(ETH_P_ALL);
+ if (bind(fd, (struct sockaddr *) &sll, sizeof sll) < 0) {
+ error = errno;
+ VLOG_ERR("%s: failed to bind raw socket (%s)",
+ netdev_get_name(netdev_), strerror(error));
+ goto error;
+ }
+
+ netdev->fd = fd;
+ return 0;
+
+error:
+ if (fd >= 0) {
+ close(fd);
+ }
+ return error;
+}
+
static int
netdev_linux_recv(struct netdev *netdev_, void *data, size_t size)
{
struct netdev_linux *netdev = netdev_linux_cast(netdev_);
if (netdev->fd < 0) {
- /* Device was opened with NETDEV_ETH_TYPE_NONE. */
+ /* Device is not listening. */
return -EAGAIN;
}
\
CREATE, \
netdev_linux_destroy, \
+ NULL, /* get_config */ \
NULL, /* set_config */ \
- NULL, /* config_equal */ \
\
netdev_linux_open, \
netdev_linux_close, \
\
ENUMERATE, \
\
+ netdev_linux_listen, \
netdev_linux_recv, \
netdev_linux_recv_wait, \
netdev_linux_drain, \
}
}
+/* Modifies the 'flag' bit in ethtool's flags field for 'netdev'. If
+ * 'enable' is true, the bit is set. Otherwise, it is cleared. */
+int
+netdev_linux_ethtool_set_flag(struct netdev *netdev, uint32_t flag,
+ const char *flag_name, bool enable)
+{
+ const char *netdev_name = netdev_get_name(netdev);
+ struct ethtool_value evalue;
+ uint32_t new_flags;
+ int error;
+
+ memset(&evalue, 0, sizeof evalue);
+ error = netdev_linux_do_ethtool(netdev_name,
+ (struct ethtool_cmd *)&evalue,
+ ETHTOOL_GFLAGS, "ETHTOOL_GFLAGS");
+ if (error) {
+ return error;
+ }
+
+ evalue.data = new_flags = (evalue.data & ~flag) | (enable ? flag : 0);
+ error = netdev_linux_do_ethtool(netdev_name,
+ (struct ethtool_cmd *)&evalue,
+ ETHTOOL_SFLAGS, "ETHTOOL_SFLAGS");
+ if (error) {
+ return error;
+ }
+
+ memset(&evalue, 0, sizeof evalue);
+ error = netdev_linux_do_ethtool(netdev_name,
+ (struct ethtool_cmd *)&evalue,
+ ETHTOOL_GFLAGS, "ETHTOOL_GFLAGS");
+ if (error) {
+ return error;
+ }
+
+ if (new_flags != evalue.data) {
+ VLOG_WARN_RL(&rl, "attempt to %s ethtool %s flag on network "
+ "device %s failed", enable ? "enable" : "disable",
+ flag_name, netdev_name);
+ return EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
static int
netdev_linux_do_ioctl(const char *name, struct ifreq *ifr, int cmd,
const char *cmd_name)
git://git.onelab.eu / sliver-openvswitch.git / blobdiff