* See the License for the specific language governing permissions and
* limitations under the License.
*/
+/**
+ * @file
+ * @brief Common utility functions for IPv4 and IPv6 VXLAN GPE tunnels
+ *
+*/
#include <vnet/vxlan-gpe/vxlan_gpe.h>
+#include <vnet/fib/fib.h>
+#include <vnet/ip/format.h>
vxlan_gpe_main_t vxlan_gpe_main;
+/**
+ * @brief Tracing function for VXLAN GPE tunnel packets
+ *
+ * @param *s formatting string
+ * @param *args
+ *
+ * @return *s formatted string
+ *
+ */
u8 * format_vxlan_gpe_tunnel (u8 * s, va_list * args)
{
vxlan_gpe_tunnel_t * t = va_arg (*args, vxlan_gpe_tunnel_t *);
s = format (s, "[%d] local: %U remote: %U ",
t - gm->tunnels,
- format_ip4_address, &t->local,
- format_ip4_address, &t->remote);
+ format_ip46_address, &t->local, IP46_TYPE_ANY,
+ format_ip46_address, &t->remote, IP46_TYPE_ANY);
+
+ s = format (s, " vxlan VNI %d ", t->vni);
switch (t->protocol)
{
t->encap_fib_index,
t->decap_fib_index);
- s = format (s, " vxlan VNI %d ", t->vni);
-
return s;
}
+/**
+ * @brief Naming for VXLAN GPE tunnel
+ *
+ * @param *s formatting string
+ * @param *args
+ *
+ * @return *s formatted string
+ *
+ */
static u8 * format_vxlan_gpe_name (u8 * s, va_list * args)
{
- vxlan_gpe_main_t * gm = &vxlan_gpe_main;
- u32 i = va_arg (*args, u32);
- u32 show_dev_instance = ~0;
-
- if (i < vec_len (gm->dev_inst_by_real))
- show_dev_instance = gm->dev_inst_by_real[i];
-
- if (show_dev_instance != ~0)
- i = show_dev_instance;
-
- return format (s, "vxlan_gpe_tunnel%d", i);
-}
-
-static int vxlan_gpe_name_renumber (vnet_hw_interface_t * hi,
- u32 new_dev_instance)
-{
- vxlan_gpe_main_t * gm = &vxlan_gpe_main;
-
- vec_validate_init_empty (gm->dev_inst_by_real, hi->dev_instance, ~0);
-
- gm->dev_inst_by_real [hi->dev_instance] = new_dev_instance;
-
- return 0;
+ u32 dev_instance = va_arg (*args, u32);
+ return format (s, "vxlan_gpe_tunnel%d", dev_instance);
}
static uword dummy_interface_tx (vlib_main_t * vm,
return frame->n_vectors;
}
-static uword dummy_set_rewrite (vnet_main_t * vnm,
- u32 sw_if_index,
- u32 l3_type,
- void * dst_address,
- void * rewrite,
- uword max_rewrite_bytes)
+/**
+ * @brief CLI function for VXLAN GPE admin up/down
+ *
+ * @param *vnm
+ * @param hw_if_index
+ * @param flag
+ *
+ * @return *rc
+ *
+ */
+static clib_error_t *
+vxlan_gpe_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
{
+ if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
+ vnet_hw_interface_set_flags (vnm, hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP);
+ else
+ vnet_hw_interface_set_flags (vnm, hw_if_index, 0);
+
return 0;
}
.format_device_name = format_vxlan_gpe_name,
.format_tx_trace = format_vxlan_gpe_encap_trace,
.tx_function = dummy_interface_tx,
- .name_renumber = vxlan_gpe_name_renumber,
+ .admin_up_down_function = vxlan_gpe_interface_admin_up_down,
};
+static uword dummy_set_rewrite (vnet_main_t * vnm,
+ u32 sw_if_index,
+ u32 l3_type,
+ void * dst_address,
+ void * rewrite,
+ uword max_rewrite_bytes)
+{
+ return 0;
+}
+
+
+/**
+ * @brief Formatting function for tracing VXLAN GPE with length
+ *
+ * @param *s
+ * @param *args
+ *
+ * @return *s
+ *
+ */
static u8 * format_vxlan_gpe_header_with_length (u8 * s, va_list * args)
{
u32 dev_instance = va_arg (*args, u32);
#define foreach_gpe_copy_field \
-_(local.as_u32) \
-_(remote.as_u32) \
_(vni) \
_(protocol) \
_(encap_fib_index) \
-_(decap_fib_index)
+_(decap_fib_index)
-#define foreach_copy_field \
-_(src.as_u32) \
-_(dst.as_u32) \
-_(vni) \
-_(encap_fib_index) \
-_(decap_fib_index) \
-_(decap_next_index)
+#define foreach_copy_ipv4 { \
+ _(local.ip4.as_u32) \
+ _(remote.ip4.as_u32) \
+}
+#define foreach_copy_ipv6 { \
+ _(local.ip6.as_u64[0]) \
+ _(local.ip6.as_u64[1]) \
+ _(remote.ip6.as_u64[0]) \
+ _(remote.ip6.as_u64[1]) \
+}
-static int vxlan_gpe_rewrite (vxlan_gpe_tunnel_t * t)
+/**
+ * @brief Calculate IPv4 VXLAN GPE rewrite header
+ *
+ * @param *t
+ *
+ * @return rc
+ *
+ */
+static int vxlan4_gpe_rewrite (vxlan_gpe_tunnel_t * t)
{
u8 *rw = 0;
ip4_header_t * ip0;
ip0->protocol = IP_PROTOCOL_UDP;
/* we fix up the ip4 header length and checksum after-the-fact */
- ip0->src_address.as_u32 = t->local.as_u32;
- ip0->dst_address.as_u32 = t->remote.as_u32;
+ ip0->src_address.as_u32 = t->local.ip4.as_u32;
+ ip0->dst_address.as_u32 = t->remote.ip4.as_u32;
ip0->checksum = ip4_header_checksum (ip0);
/* UDP header, randomize src port on something, maybe? */
/* VXLAN header. Are we having fun yet? */
h0->vxlan.flags = VXLAN_GPE_FLAGS_I | VXLAN_GPE_FLAGS_P;
h0->vxlan.ver_res = VXLAN_GPE_VERSION;
- h0->vxlan.protocol = VXLAN_GPE_PROTOCOL_IP4;
+ h0->vxlan.protocol = t->protocol;
+ h0->vxlan.vni_res = clib_host_to_net_u32 (t->vni<<8);
+
+ t->rewrite = rw;
+ return (0);
+}
+
+/**
+ * @brief Calculate IPv6 VXLAN GPE rewrite header
+ *
+ * @param *t
+ *
+ * @return rc
+ *
+ */
+static int vxlan6_gpe_rewrite (vxlan_gpe_tunnel_t * t)
+{
+ u8 *rw = 0;
+ ip6_header_t * ip0;
+ ip6_vxlan_gpe_header_t * h0;
+ int len;
+
+ len = sizeof (*h0);
+
+ vec_validate_aligned (rw, len-1, CLIB_CACHE_LINE_BYTES);
+
+ h0 = (ip6_vxlan_gpe_header_t *) rw;
+
+ /* Fixed portion of the (outer) ip4 header */
+ ip0 = &h0->ip6;
+ ip0->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32(6 << 28);
+ ip0->hop_limit = 255;
+ ip0->protocol = IP_PROTOCOL_UDP;
+
+ ip0->src_address.as_u64[0] = t->local.ip6.as_u64[0];
+ ip0->src_address.as_u64[1] = t->local.ip6.as_u64[1];
+ ip0->dst_address.as_u64[0] = t->remote.ip6.as_u64[0];
+ ip0->dst_address.as_u64[1] = t->remote.ip6.as_u64[1];
+
+ /* UDP header, randomize src port on something, maybe? */
+ h0->udp.src_port = clib_host_to_net_u16 (4790);
+ h0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_vxlan_gpe);
+
+ /* VXLAN header. Are we having fun yet? */
+ h0->vxlan.flags = VXLAN_GPE_FLAGS_I | VXLAN_GPE_FLAGS_P;
+ h0->vxlan.ver_res = VXLAN_GPE_VERSION;
+ h0->vxlan.protocol = t->protocol;
h0->vxlan.vni_res = clib_host_to_net_u32 (t->vni<<8);
t->rewrite = rw;
return (0);
}
-int vnet_vxlan_gpe_add_del_tunnel
+/**
+ * @brief Add or Del a VXLAN GPE tunnel
+ *
+ * @param *a
+ * @param *sw_if_index
+ *
+ * @return rc
+ *
+ */
+int vnet_vxlan_gpe_add_del_tunnel
(vnet_vxlan_gpe_add_del_tunnel_args_t *a, u32 * sw_if_indexp)
{
vxlan_gpe_main_t * gm = &vxlan_gpe_main;
u32 hw_if_index = ~0;
u32 sw_if_index = ~0;
int rv;
- vxlan_gpe_tunnel_key_t key, *key_copy;
+ vxlan4_gpe_tunnel_key_t key4, *key4_copy;
+ vxlan6_gpe_tunnel_key_t key6, *key6_copy;
hash_pair_t *hp;
-
- key.local = a->local.as_u32;
- key.remote = a->remote.as_u32;
- key.vni = clib_host_to_net_u32 (a->vni << 8);
- key.pad = 0;
-
- p = hash_get_mem (gm->vxlan_gpe_tunnel_by_key, &key);
-
+
+ if (!a->is_ip6)
+ {
+ key4.local = a->local.ip4.as_u32;
+ key4.remote = a->remote.ip4.as_u32;
+ key4.vni = clib_host_to_net_u32 (a->vni << 8);
+ key4.pad = 0;
+
+ p = hash_get_mem(gm->vxlan4_gpe_tunnel_by_key, &key4);
+ }
+ else
+ {
+ key6.local.as_u64[0] = a->local.ip6.as_u64[0];
+ key6.local.as_u64[1] = a->local.ip6.as_u64[1];
+ key6.remote.as_u64[0] = a->remote.ip6.as_u64[0];
+ key6.remote.as_u64[1] = a->remote.ip6.as_u64[1];
+ key6.vni = clib_host_to_net_u32 (a->vni << 8);
+
+ p = hash_get_mem(gm->vxlan6_gpe_tunnel_by_key, &key6);
+ }
+
if (a->is_add)
{
/* adding a tunnel: tunnel must not already exist */
- if (p)
+ if (p)
return VNET_API_ERROR_INVALID_VALUE;
-
- if (a->decap_next_index >= VXLAN_GPE_INPUT_N_NEXT)
- return VNET_API_ERROR_INVALID_DECAP_NEXT;
-
+
pool_get_aligned (gm->tunnels, t, CLIB_CACHE_LINE_BYTES);
memset (t, 0, sizeof (*t));
-
+
/* copy from arg structure */
#define _(x) t->x = a->x;
foreach_gpe_copy_field;
+ if (!a->is_ip6) foreach_copy_ipv4
+ else foreach_copy_ipv6
#undef _
- rv = vxlan_gpe_rewrite (t);
+ if (!a->is_ip6) t->flags |= VXLAN_GPE_TUNNEL_IS_IPV4;
+
+ if (!a->is_ip6) {
+ rv = vxlan4_gpe_rewrite (t);
+ } else {
+ rv = vxlan6_gpe_rewrite (t);
+ }
if (rv)
- {
+ {
pool_put (gm->tunnels, t);
return rv;
- }
+ }
- key_copy = clib_mem_alloc (sizeof (*key_copy));
- clib_memcpy (key_copy, &key, sizeof (*key_copy));
+ if (!a->is_ip6)
+ {
+ key4_copy = clib_mem_alloc (sizeof (*key4_copy));
+ clib_memcpy (key4_copy, &key4, sizeof (*key4_copy));
+ hash_set_mem (gm->vxlan4_gpe_tunnel_by_key, key4_copy,
+ t - gm->tunnels);
+ }
+ else
+ {
+ key6_copy = clib_mem_alloc (sizeof (*key6_copy));
+ clib_memcpy (key6_copy, &key6, sizeof (*key6_copy));
+ hash_set_mem (gm->vxlan6_gpe_tunnel_by_key, key6_copy,
+ t - gm->tunnels);
+ }
- hash_set_mem (gm->vxlan_gpe_tunnel_by_key, key_copy,
- t - gm->tunnels);
-
if (vec_len (gm->free_vxlan_gpe_tunnel_hw_if_indices) > 0)
{
hw_if_index = gm->free_vxlan_gpe_tunnel_hw_if_indices
[vec_len (gm->free_vxlan_gpe_tunnel_hw_if_indices)-1];
_vec_len (gm->free_vxlan_gpe_tunnel_hw_if_indices) -= 1;
-
+
hi = vnet_get_hw_interface (vnm, hw_if_index);
hi->dev_instance = t - gm->tunnels;
hi->hw_instance = hi->dev_instance;
}
- else
+ else
{
hw_if_index = vnet_register_interface
(vnm, vxlan_gpe_device_class.index, t - gm->tunnels,
hi = vnet_get_hw_interface (vnm, hw_if_index);
hi->output_node_index = vxlan_gpe_encap_node.index;
}
-
+
t->hw_if_index = hw_if_index;
t->sw_if_index = sw_if_index = hi->sw_if_index;
-
- vnet_sw_interface_set_flags (vnm, hi->sw_if_index,
+ vec_validate_init_empty (gm->tunnel_index_by_sw_if_index, sw_if_index, ~0);
+ gm->tunnel_index_by_sw_if_index[sw_if_index] = t - gm->tunnels;
+
+ vnet_sw_interface_set_flags (vnm, hi->sw_if_index,
VNET_SW_INTERFACE_FLAG_ADMIN_UP);
}
else
{
/* deleting a tunnel: tunnel must exist */
- if (!p)
+ if (!p)
return VNET_API_ERROR_NO_SUCH_ENTRY;
t = pool_elt_at_index (gm->tunnels, p[0]);
vnet_sw_interface_set_flags (vnm, t->sw_if_index, 0 /* down */);
vec_add1 (gm->free_vxlan_gpe_tunnel_hw_if_indices, t->hw_if_index);
- hp = hash_get_pair (gm->vxlan_gpe_tunnel_by_key, &key);
- key_copy = (void *)(hp->key);
- hash_unset_mem (gm->vxlan_gpe_tunnel_by_key, &key);
- clib_mem_free (key_copy);
+ gm->tunnel_index_by_sw_if_index[t->sw_if_index] = ~0;
+
+ if (!a->is_ip6)
+ {
+ hp = hash_get_pair (gm->vxlan4_gpe_tunnel_by_key, &key4);
+ key4_copy = (void *)(hp->key);
+ hash_unset_mem (gm->vxlan4_gpe_tunnel_by_key, &key4);
+ clib_mem_free (key4_copy);
+ }
+ else
+ {
+ hp = hash_get_pair (gm->vxlan6_gpe_tunnel_by_key, &key6);
+ key6_copy = (void *)(hp->key);
+ hash_unset_mem (gm->vxlan4_gpe_tunnel_by_key, &key6);
+ clib_mem_free (key6_copy);
+ }
vec_free (t->rewrite);
pool_put (gm->tunnels, t);
return 0;
}
-static u32 fib_index_from_fib_id (u32 fib_id)
-{
- ip4_main_t * im = &ip4_main;
- uword * p;
-
- p = hash_get (im->fib_index_by_table_id, fib_id);
- if (!p)
- return ~0;
-
- return p[0];
-}
-
-static uword unformat_gpe_decap_next (unformat_input_t * input, va_list * args)
-{
- u32 * result = va_arg (*args, u32 *);
- u32 tmp;
-
- if (unformat (input, "drop"))
- *result = VXLAN_GPE_INPUT_NEXT_DROP;
- else if (unformat (input, "ip4"))
- *result = VXLAN_GPE_INPUT_NEXT_IP4_INPUT;
- else if (unformat (input, "ip6"))
- *result = VXLAN_GPE_INPUT_NEXT_IP6_INPUT;
- else if (unformat (input, "ethernet"))
- *result = VXLAN_GPE_INPUT_NEXT_ETHERNET_INPUT;
- else if (unformat (input, "%d", &tmp))
- *result = tmp;
- else
- return 0;
- return 1;
-}
-
static clib_error_t *
vxlan_gpe_add_del_tunnel_command_fn (vlib_main_t * vm,
unformat_input_t * input,
{
unformat_input_t _line_input, * line_input = &_line_input;
u8 is_add = 1;
- ip4_address_t local, remote;
+ ip46_address_t local, remote;
u8 local_set = 0;
u8 remote_set = 0;
+ u8 ipv4_set = 0;
+ u8 ipv6_set = 0;
u32 encap_fib_index = 0;
u32 decap_fib_index = 0;
u8 protocol = VXLAN_GPE_PROTOCOL_IP4;
- u32 decap_next_index = VXLAN_GPE_INPUT_NEXT_IP4_INPUT;
u32 vni;
u8 vni_set = 0;
int rv;
u32 tmp;
vnet_vxlan_gpe_add_del_tunnel_args_t _a, * a = &_a;
u32 sw_if_index;
-
+
/* Get a line of input. */
if (! unformat_user (input, unformat_line_input, line_input))
return 0;
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) {
if (unformat (line_input, "del"))
is_add = 0;
- else if (unformat (line_input, "local %U",
- unformat_ip4_address, &local))
+ else if (unformat (line_input, "local %U",
+ unformat_ip4_address, &local.ip4))
+ {
local_set = 1;
+ ipv4_set = 1;
+ }
else if (unformat (line_input, "remote %U",
- unformat_ip4_address, &remote))
+ unformat_ip4_address, &remote.ip4))
+ {
remote_set = 1;
+ ipv4_set = 1;
+ }
+ else if (unformat (line_input, "local %U",
+ unformat_ip6_address, &local.ip6))
+ {
+ local_set = 1;
+ ipv6_set = 1;
+ }
+ else if (unformat (line_input, "remote %U",
+ unformat_ip6_address, &remote.ip6))
+ {
+ remote_set = 1;
+ ipv6_set = 1;
+ }
else if (unformat (line_input, "encap-vrf-id %d", &tmp))
{
- encap_fib_index = fib_index_from_fib_id (tmp);
+ if (ipv6_set)
+ encap_fib_index = ip6_fib_index_from_table_id (tmp);
+ else
+ encap_fib_index = ip4_fib_index_from_table_id (tmp);
+
if (encap_fib_index == ~0)
return clib_error_return (0, "nonexistent encap fib id %d", tmp);
}
else if (unformat (line_input, "decap-vrf-id %d", &tmp))
{
- decap_fib_index = fib_index_from_fib_id (tmp);
+ if (ipv6_set)
+ decap_fib_index = ip6_fib_index_from_table_id (tmp);
+ else
+ decap_fib_index = ip4_fib_index_from_table_id (tmp);
+
if (decap_fib_index == ~0)
return clib_error_return (0, "nonexistent decap fib id %d", tmp);
}
- else if (unformat (line_input, "decap-next %U", unformat_gpe_decap_next,
- &decap_next_index))
- ;
else if (unformat (line_input, "vni %d", &vni))
vni_set = 1;
else if (unformat(line_input, "next-ip4"))
protocol = VXLAN_GPE_PROTOCOL_ETHERNET;
else if (unformat(line_input, "next-nsh"))
protocol = VXLAN_GPE_PROTOCOL_NSH;
- else
- return clib_error_return (0, "parse error: '%U'",
+ else
+ return clib_error_return (0, "parse error: '%U'",
format_unformat_error, line_input);
}
if (remote_set == 0)
return clib_error_return (0, "tunnel remote address not specified");
+ if (ipv4_set && ipv6_set)
+ return clib_error_return (0, "both IPv4 and IPv6 addresses specified");
+
+ if ((ipv4_set && memcmp(&local.ip4, &remote.ip4, sizeof(local.ip4)) == 0) ||
+ (ipv6_set && memcmp(&local.ip6, &remote.ip6, sizeof(local.ip6)) == 0))
+ return clib_error_return (0, "src and dst addresses are identical");
+
if (vni_set == 0)
return clib_error_return (0, "vni not specified");
memset (a, 0, sizeof (*a));
a->is_add = is_add;
+ a->is_ip6 = ipv6_set;
#define _(x) a->x = x;
foreach_gpe_copy_field;
+ if (ipv4_set) foreach_copy_ipv4
+ else foreach_copy_ipv6
#undef _
rv = vnet_vxlan_gpe_add_del_tunnel (a, &sw_if_index);
return clib_error_return (0, "tunnel does not exist...");
default:
- return clib_error_return
+ return clib_error_return
(0, "vnet_vxlan_gpe_add_del_tunnel returned %d", rv);
}
VLIB_CLI_COMMAND (create_vxlan_gpe_tunnel_command, static) = {
.path = "create vxlan-gpe tunnel",
- .short_help =
- "create vxlan-gpe tunnel local <ip4-addr> remote <ip4-addr>"
+ .short_help =
+ "create vxlan-gpe tunnel local <local-addr> remote <remote-addr>"
" vni <nn> [next-ip4][next-ip6][next-ethernet][next-nsh]"
" [encap-vrf-id <nn>] [decap-vrf-id <nn>]"
" [del]\n",
.function = vxlan_gpe_add_del_tunnel_command_fn,
};
+/**
+ * @brief CLI function for showing VXLAN GPE tunnels
+ *
+ * @param *vm
+ * @param *input
+ * @param *cmd
+ *
+ * @return error
+ *
+ */
static clib_error_t *
show_vxlan_gpe_tunnel_command_fn (vlib_main_t * vm,
unformat_input_t * input,
{
vxlan_gpe_main_t * gm = &vxlan_gpe_main;
vxlan_gpe_tunnel_t * t;
-
+
if (pool_elts (gm->tunnels) == 0)
vlib_cli_output (vm, "No vxlan-gpe tunnels configured.");
({
vlib_cli_output (vm, "%U", format_vxlan_gpe_tunnel, t);
}));
-
+
return 0;
}
.function = show_vxlan_gpe_tunnel_command_fn,
};
+/**
+ * @brief Feature init function for VXLAN GPE
+ *
+ * @param *vm
+ *
+ * @return error
+ *
+ */
clib_error_t *vxlan_gpe_init (vlib_main_t *vm)
{
vxlan_gpe_main_t *gm = &vxlan_gpe_main;
-
+
gm->vnet_main = vnet_get_main();
gm->vlib_main = vm;
-
- gm->vxlan_gpe_tunnel_by_key
- = hash_create_mem (0, sizeof(vxlan_gpe_tunnel_key_t), sizeof (uword));
- udp_register_dst_port (vm, UDP_DST_PORT_vxlan_gpe,
- vxlan_gpe_input_node.index, 1 /* is_ip4 */);
+ gm->vxlan4_gpe_tunnel_by_key
+ = hash_create_mem (0, sizeof(vxlan4_gpe_tunnel_key_t), sizeof (uword));
+
+ gm->vxlan6_gpe_tunnel_by_key
+ = hash_create_mem (0, sizeof(vxlan6_gpe_tunnel_key_t), sizeof (uword));
+
+
+ udp_register_dst_port (vm, UDP_DST_PORT_vxlan_gpe,
+ vxlan4_gpe_input_node.index, 1 /* is_ip4 */);
+ udp_register_dst_port (vm, UDP_DST_PORT_vxlan6_gpe,
+ vxlan6_gpe_input_node.index, 0 /* is_ip4 */);
return 0;
}
Code Review / vpp.git / blobdiff