X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fnetdev-vport.c;h=1ef9114c7e3ab27206030fc26236e398270fb27d;hb=2b9d65898426b2e15d05dc6a9ffdbcb92933398f;hp=35092d25caa0e522dc3b97b693d91cff56681129;hpb=0bb5c3ec4dde32bfbdf8b63296d0580f33f829dd;p=sliver-openvswitch.git

diff --git a/lib/netdev-vport.c b/lib/netdev-vport.c
index 35092d25c..1ef9114c7 100644
--- a/lib/netdev-vport.c
+++ b/lib/netdev-vport.c
@@ -15,13 +15,19 @@
  */
 
 #include <config.h>
+
+#include "netdev-vport.h"
+
 #include <errno.h>
 #include <fcntl.h>
+#include <net/if.h>
 #include <sys/ioctl.h>
 
 #include "list.h"
-#include "netdev-vport.h"
+#include "netdev-provider.h"
 #include "openvswitch/datapath-protocol.h"
+#include "openvswitch/tunnel.h"
+#include "packets.h"
 #include "shash.h"
 #include "socket-util.h"
 #include "vlog.h"
@@ -34,28 +40,179 @@ struct netdev_vport_notifier {
     struct shash_node *shash_node;
 };
 
+struct netdev_dev_vport {
+    struct netdev_dev netdev_dev;
+};
+
+struct netdev_vport {
+    struct netdev netdev;
+};
+
+struct vport_info {
+    const char *devname;
+    const char *type;
+    void *config;
+};
+
+struct vport_class {
+    const struct netdev_class netdev_class;
+    int (*parse_config)(struct vport_info *port, const struct shash *args);
+};
+
 static struct shash netdev_vport_notifiers =
                                     SHASH_INITIALIZER(&netdev_vport_notifiers);
 
 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
 
-int
-netdev_vport_do_ioctl(int cmd, void *arg)
+static int netdev_vport_do_ioctl(int cmd, void *arg);
+static int netdev_vport_create(const struct netdev_class *, const char *,
+                               const struct shash *, struct netdev_dev **);
+static void netdev_vport_poll_notify(const struct netdev *);
+
+static bool
+is_vport_class(const struct netdev_class *class)
 {
-    static int ioctl_fd = -1;
+    return class->create == netdev_vport_create;
+}
 
-    if (ioctl_fd < 0) {
-        ioctl_fd = open("/dev/net/dp0", O_RDONLY | O_NONBLOCK);
-        if (ioctl_fd < 0) {
-            VLOG_ERR_RL(&rl, "failed to open ioctl fd: %s", strerror(errno));
-            return errno;
+static const struct vport_class *
+vport_class_cast(const struct netdev_class *class)
+{
+    assert(is_vport_class(class));
+    return CONTAINER_OF(class, struct vport_class, netdev_class);
+}
+
+static struct netdev_dev_vport *
+netdev_dev_vport_cast(const struct netdev_dev *netdev_dev)
+{
+    assert(is_vport_class(netdev_dev_get_class(netdev_dev)));
+    return CONTAINER_OF(netdev_dev, struct netdev_dev_vport, netdev_dev);
+}
+
+static struct netdev_vport *
+netdev_vport_cast(const struct netdev *netdev)
+{
+    struct netdev_dev *netdev_dev = netdev_get_dev(netdev);
+    assert(is_vport_class(netdev_dev_get_class(netdev_dev)));
+    return CONTAINER_OF(netdev, struct netdev_vport, netdev);
+}
+
+static int
+netdev_vport_parse_config(const struct netdev_class *netdev_class,
+                          const char *name, const struct shash *args,
+                          void **configp)
+{
+    const struct vport_class *c = vport_class_cast(netdev_class);
+    if (c->parse_config) {
+        struct vport_info info;
+        int error;
+
+        info.devname = name;
+        info.type = netdev_class->type;
+        error = (c->parse_config)(&info, args);
+        *configp = info.config;
+        return error;
+    } else {
+        if (!shash_is_empty(args)) {
+            VLOG_WARN("%s: arguments for %s vports should be empty",
+                      name, netdev_class->type);
         }
+        *configp = NULL;
+        return 0;
     }
+}
 
-    return ioctl(ioctl_fd, cmd, arg) ? errno : 0;
+static int
+netdev_vport_create(const struct netdev_class *class, const char *name,
+                    const struct shash *args OVS_UNUSED,
+                    struct netdev_dev **netdev_devp)
+{
+    int err;
+    struct odp_vport_add ova;
+    struct netdev_dev_vport *netdev_dev;
+
+    ovs_strlcpy(ova.port_type, class->type, sizeof ova.port_type);
+    ovs_strlcpy(ova.devname, name, sizeof ova.devname);
+    err = netdev_vport_parse_config(class, name, args, &ova.config);
+    if (err) {
+        goto exit;
+    }
+
+    err = netdev_vport_do_ioctl(ODP_VPORT_ADD, &ova);
+
+    if (err == EBUSY) {
+        VLOG_WARN("%s: destroying existing device", name);
+
+        err = netdev_vport_do_ioctl(ODP_VPORT_DEL, ova.devname);
+        if (err) {
+            goto exit;
+        }
+
+        err = netdev_vport_do_ioctl(ODP_VPORT_ADD, &ova);
+    }
+    if (err) {
+        goto exit;
+    }
+
+    netdev_dev = xmalloc(sizeof *netdev_dev);
+    netdev_dev_init(&netdev_dev->netdev_dev, name, class);
+
+    *netdev_devp = &netdev_dev->netdev_dev;
+
+exit:
+    free(ova.config);
+    return err;
 }
 
-int
+static void
+netdev_vport_destroy(struct netdev_dev *netdev_dev_)
+{
+    struct netdev_dev_vport *netdev_dev = netdev_dev_vport_cast(netdev_dev_);
+
+    free(netdev_dev);
+}
+
+static int
+netdev_vport_open(struct netdev_dev *netdev_dev_, int ethertype OVS_UNUSED,
+                struct netdev **netdevp)
+{
+    struct netdev_vport *netdev;
+
+    netdev = xmalloc(sizeof *netdev);
+    netdev_init(&netdev->netdev, netdev_dev_);
+
+    *netdevp = &netdev->netdev;
+    return 0;
+}
+
+static void
+netdev_vport_close(struct netdev *netdev_)
+{
+    struct netdev_vport *netdev = netdev_vport_cast(netdev_);
+    free(netdev);
+}
+
+static int
+netdev_vport_reconfigure(struct netdev_dev *netdev_dev,
+                         const struct shash *args)
+{
+    const char *name = netdev_dev_get_name(netdev_dev);
+    struct odp_vport_mod ovm;
+    int err;
+
+    ovs_strlcpy(ovm.devname, name, sizeof ovm.devname);
+    err = netdev_vport_parse_config(netdev_dev_get_class(netdev_dev), name,
+                                    args, &ovm.config);
+    if (err) {
+        return err;
+    }
+
+    err = netdev_vport_do_ioctl(ODP_VPORT_MOD, &ovm);
+    free(ovm.config);
+    return err;
+}
+
+static int
 netdev_vport_set_etheraddr(struct netdev *netdev,
                            const uint8_t mac[ETH_ADDR_LEN])
 {
@@ -76,7 +233,7 @@ netdev_vport_set_etheraddr(struct netdev *netdev,
     return 0;
 }
 
-int
+static int
 netdev_vport_get_etheraddr(const struct netdev *netdev,
                            uint8_t mac[ETH_ADDR_LEN])
 {
@@ -95,7 +252,7 @@ netdev_vport_get_etheraddr(const struct netdev *netdev,
     return 0;
 }
 
-int
+static int
 netdev_vport_get_mtu(const struct netdev *netdev, int *mtup)
 {
     struct odp_vport_mtu vport_mtu;
@@ -113,7 +270,7 @@ netdev_vport_get_mtu(const struct netdev *netdev, int *mtup)
     return 0;
 }
 
-int
+static int
 netdev_vport_get_carrier(const struct netdev *netdev OVS_UNUSED, bool *carrier)
 {
     *carrier = true;
@@ -192,7 +349,7 @@ netdev_vport_set_stats(struct netdev *netdev, const struct netdev_stats *stats)
     return err;
 }
 
-int
+static int
 netdev_vport_update_flags(struct netdev *netdev OVS_UNUSED,
                         enum netdev_flags off, enum netdev_flags on OVS_UNUSED,
                         enum netdev_flags *old_flagsp)
@@ -211,7 +368,7 @@ make_poll_name(const struct netdev *netdev)
     return xasprintf("%s:%s", netdev_get_type(netdev), netdev_get_name(netdev));
 }
 
-int
+static int
 netdev_vport_poll_add(struct netdev *netdev,
                       void (*cb)(struct netdev_notifier *), void *aux,
                       struct netdev_notifier **notifierp)
@@ -242,7 +399,7 @@ netdev_vport_poll_add(struct netdev *netdev,
     return 0;
 }
 
-void
+static void
 netdev_vport_poll_remove(struct netdev_notifier *notifier_)
 {
     struct netdev_vport_notifier *notifier =
@@ -258,8 +415,26 @@ netdev_vport_poll_remove(struct netdev_notifier *notifier_)
 
     free(notifier);
 }
+
+/* Helper functions. */
 
-void
+static int
+netdev_vport_do_ioctl(int cmd, void *arg)
+{
+    static int ioctl_fd = -1;
+
+    if (ioctl_fd < 0) {
+        ioctl_fd = open("/dev/net/dp0", O_RDONLY | O_NONBLOCK);
+        if (ioctl_fd < 0) {
+            VLOG_ERR_RL(&rl, "failed to open ioctl fd: %s", strerror(errno));
+            return errno;
+        }
+    }
+
+    return ioctl(ioctl_fd, cmd, arg) ? errno : 0;
+}
+
+static void
 netdev_vport_poll_notify(const struct netdev *netdev)
 {
     char *poll_name = make_poll_name(netdev);
@@ -277,3 +452,210 @@ netdev_vport_poll_notify(const struct netdev *netdev)
 
     free(poll_name);
 }
+
+/* Code specific to individual vport types. */
+
+static int
+parse_tunnel_config(struct vport_info *port, const struct shash *args)
+{
+    const char *name = port->devname;
+    bool is_gre = !strcmp(port->type, "gre");
+    struct tnl_port_config *config;
+    struct shash_node *node;
+    bool ipsec_ip_set = false;
+    bool ipsec_mech_set = false;
+
+    config = port->config = xzalloc(sizeof *config);
+    config->flags |= TNL_F_PMTUD;
+    config->flags |= TNL_F_HDR_CACHE;
+
+    SHASH_FOR_EACH (node, args) {
+        if (!strcmp(node->name, "remote_ip")) {
+            struct in_addr in_addr;
+            if (lookup_ip(node->data, &in_addr)) {
+                VLOG_WARN("%s: bad %s 'remote_ip'", name, port->type);
+            } else {
+                config->daddr = in_addr.s_addr;
+            }
+        } else if (!strcmp(node->name, "local_ip")) {
+            struct in_addr in_addr;
+            if (lookup_ip(node->data, &in_addr)) {
+                VLOG_WARN("%s: bad %s 'local_ip'", name, port->type);
+            } else {
+                config->saddr = in_addr.s_addr;
+            }
+        } else if (!strcmp(node->name, "key") && is_gre) {
+            if (!strcmp(node->data, "flow")) {
+                config->flags |= TNL_F_IN_KEY_MATCH;
+                config->flags |= TNL_F_OUT_KEY_ACTION;
+            } else {
+                config->out_key = config->in_key = htonl(atoi(node->data));
+            }
+        } else if (!strcmp(node->name, "in_key") && is_gre) {
+            if (!strcmp(node->data, "flow")) {
+                config->flags |= TNL_F_IN_KEY_MATCH;
+            } else {
+                config->in_key = htonl(atoi(node->data));
+            }
+        } else if (!strcmp(node->name, "out_key") && is_gre) {
+            if (!strcmp(node->data, "flow")) {
+                config->flags |= TNL_F_OUT_KEY_ACTION;
+            } else {
+                config->out_key = htonl(atoi(node->data));
+            }
+        } else if (!strcmp(node->name, "tos")) {
+            if (!strcmp(node->data, "inherit")) {
+                config->flags |= TNL_F_TOS_INHERIT;
+            } else {
+                config->tos = atoi(node->data);
+            }
+        } else if (!strcmp(node->name, "ttl")) {
+            if (!strcmp(node->data, "inherit")) {
+                config->flags |= TNL_F_TTL_INHERIT;
+            } else {
+                config->ttl = atoi(node->data);
+            }
+        } else if (!strcmp(node->name, "csum") && is_gre) {
+            if (!strcmp(node->data, "true")) {
+                config->flags |= TNL_F_CSUM;
+            }
+        } else if (!strcmp(node->name, "pmtud")) {
+            if (!strcmp(node->data, "false")) {
+                config->flags &= ~TNL_F_PMTUD;
+            }
+        } else if (!strcmp(node->name, "header_cache")) {
+            if (!strcmp(node->data, "false")) {
+                config->flags &= ~TNL_F_HDR_CACHE;
+            }
+        } else if (!strcmp(node->name, "ipsec_local_ip")) {
+            ipsec_ip_set = true;
+        } else if (!strcmp(node->name, "ipsec_cert")
+                   || !strcmp(node->name, "ipsec_psk")) {
+            ipsec_mech_set = true;
+        } else {
+            VLOG_WARN("%s: unknown %s argument '%s'",
+                      name, port->type, node->name);
+        }
+    }
+
+   /* IPsec doesn't work when header caching is enabled.  Disable it if the
+    * IPsec local IP address and authentication mechanism have been defined. */
+    if (ipsec_ip_set && ipsec_mech_set) {
+        VLOG_INFO("%s: header caching disabled due to use of IPsec", name);
+        config->flags &= ~TNL_F_HDR_CACHE;
+    }
+
+    if (!config->daddr) {
+        VLOG_WARN("%s: %s type requires valid 'remote_ip' argument",
+                  name, port->type);
+        return EINVAL;
+    }
+
+    return 0;
+}
+
+static int
+parse_patch_config(struct vport_info *port, const struct shash *args)
+{
+    const char *name = port->devname;
+    const char *peer;
+
+    peer = shash_find_data(args, "peer");
+    if (!peer) {
+        VLOG_WARN("%s: patch type requires valid 'peer' argument", name);
+        return EINVAL;
+    }
+
+    if (shash_count(args) > 1) {
+        VLOG_WARN("%s: patch type takes only a 'peer' argument", name);
+        return EINVAL;
+    }
+
+    if (strlen(peer) >= IFNAMSIZ) {
+        VLOG_WARN("%s: patch 'peer' arg too long", name);
+        return EINVAL;
+    }
+
+    if (!strcmp(name, peer)) {
+        VLOG_WARN("%s: patch peer must not be self", name);
+        return EINVAL;
+    }
+
+    port->config = xstrdup(peer);
+
+    return 0;
+}
+
+#define VPORT_FUNCTIONS                                     \
+    NULL,                       /* init */                  \
+    NULL,                       /* run */                   \
+    NULL,                       /* wait */                  \
+                                                            \
+    netdev_vport_create,                                    \
+    netdev_vport_destroy,                                   \
+    netdev_vport_reconfigure,                               \
+                                                            \
+    netdev_vport_open,                                      \
+    netdev_vport_close,                                     \
+                                                            \
+    NULL,                       /* enumerate */             \
+                                                            \
+    NULL,                       /* recv */                  \
+    NULL,                       /* recv_wait */             \
+    NULL,                       /* drain */                 \
+                                                            \
+    NULL,                       /* send */                  \
+    NULL,                       /* send_wait */             \
+                                                            \
+    netdev_vport_set_etheraddr,                             \
+    netdev_vport_get_etheraddr,                             \
+    netdev_vport_get_mtu,                                   \
+    NULL,                       /* get_ifindex */           \
+    netdev_vport_get_carrier,                               \
+    netdev_vport_get_stats,                                 \
+    netdev_vport_set_stats,                                 \
+                                                            \
+    NULL,                       /* get_features */          \
+    NULL,                       /* set_advertisements */    \
+    NULL,                       /* get_vlan_vid */          \
+                                                            \
+    NULL,                       /* set_policing */          \
+    NULL,                       /* get_qos_types */         \
+    NULL,                       /* get_qos_capabilities */  \
+    NULL,                       /* get_qos */               \
+    NULL,                       /* set_qos */               \
+    NULL,                       /* get_queue */             \
+    NULL,                       /* set_queue */             \
+    NULL,                       /* delete_queue */          \
+    NULL,                       /* get_queue_stats */       \
+    NULL,                       /* dump_queues */           \
+    NULL,                       /* dump_queue_stats */      \
+                                                            \
+    NULL,                       /* get_in4 */               \
+    NULL,                       /* set_in4 */               \
+    NULL,                       /* get_in6 */               \
+    NULL,                       /* add_router */            \
+    NULL,                       /* get_next_hop */          \
+    NULL,                       /* arp_lookup */            \
+                                                            \
+    netdev_vport_update_flags,                              \
+                                                            \
+    netdev_vport_poll_add,                                  \
+    netdev_vport_poll_remove,
+
+static const struct vport_class vport_gre_class
+        = { { "gre", VPORT_FUNCTIONS }, parse_tunnel_config };
+
+static const struct vport_class vport_capwap_class
+        = { { "capwap", VPORT_FUNCTIONS }, parse_tunnel_config };
+
+static const struct vport_class vport_patch_class
+        = { { "patch", VPORT_FUNCTIONS }, parse_patch_config };
+
+void
+netdev_vport_register(void)
+{
+    netdev_register_provider(&vport_gre_class.netdev_class);
+    netdev_register_provider(&vport_capwap_class.netdev_class);
+    netdev_register_provider(&vport_patch_class.netdev_class);
+}