#include <vnet/ethernet/ethernet.h>
#include <vnet/fib/fib_entry.h>
#include <vnet/fib/fib_table.h>
+#include <vnet/fib/fib_entry_track.h>
#include <vnet/mfib/mfib_table.h>
#include <vnet/adj/adj_mcast.h>
#include <vnet/dpo/dpo.h>
#include <vnet/plugin/plugin.h>
#include <vpp/app/version.h>
#include <gtpu/gtpu.h>
-
+#include <vnet/flow/flow.h>
gtpu_main_t gtpu_main;
};
/* *INDENT-on* */
+u8 * format_gtpu_encap_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ gtpu_encap_trace_t * t
+ = va_arg (*args, gtpu_encap_trace_t *);
+
+ s = format (s, "GTPU encap to gtpu_tunnel%d tteid %d",
+ t->tunnel_index, t->tteid);
+ return s;
+}
+
static u8 *
format_decap_next (u8 * s, va_list * args)
{
{
gtpu_tunnel_t *t = va_arg (*args, gtpu_tunnel_t *);
gtpu_main_t *ngm = >pu_main;
+ ip4_main_t *im4 = &ip4_main;
+ ip6_main_t *im6 = &ip6_main;
+ u8 is_ipv6 = !ip46_address_is_ip4 (&t->dst);
- s = format (s, "[%d] src %U dst %U teid %d fib-idx %d sw-if-idx %d ",
+ u32 encap_vrf_id =
+ is_ipv6 ? im6->fibs[t->encap_fib_index].ft_table_id :
+ im4->fibs[t->encap_fib_index].ft_table_id;
+
+ s = format (s, "[%d] src %U dst %U teid %d tteid %d "
+ "encap-vrf-id %d sw-if-idx %d ",
t - ngm->tunnels,
format_ip46_address, &t->src, IP46_TYPE_ANY,
format_ip46_address, &t->dst, IP46_TYPE_ANY,
- t->teid, t->encap_fib_index, t->sw_if_index);
+ t->teid, t->tteid, encap_vrf_id, t->sw_if_index);
s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index);
s = format (s, "decap-next-%U ", format_decap_next, t->decap_next_index);
#define foreach_copy_field \
-_(teid) \
+_(teid) \
+_(tteid) \
_(mcast_sw_if_index) \
_(encap_fib_index) \
_(decap_next_index) \
/* GTPU header */
gtpu->ver_flags = GTPU_V1_VER | GTPU_PT_GTP;
gtpu->type = GTPU_TYPE_GTPU;
- gtpu->teid = clib_host_to_net_u32 (t->teid);
+ gtpu->teid = clib_host_to_net_u32 (t->tteid);
t->rewrite = r.rw;
/* Now only support 8-byte gtpu header. TBD */
return decap_next_index < r->n_next_nodes;
}
-static uword
-vtep_addr_ref (ip46_address_t * ip)
-{
- uword *vtep = ip46_address_is_ip4 (ip) ?
- hash_get (gtpu_main.vtep4, ip->ip4.as_u32) :
- hash_get_mem (gtpu_main.vtep6, &ip->ip6);
- if (vtep)
- return ++(*vtep);
- ip46_address_is_ip4 (ip) ?
- hash_set (gtpu_main.vtep4, ip->ip4.as_u32, 1) :
- hash_set_mem_alloc (>pu_main.vtep6, &ip->ip6, 1);
- return 1;
-}
-
-static uword
-vtep_addr_unref (ip46_address_t * ip)
-{
- uword *vtep = ip46_address_is_ip4 (ip) ?
- hash_get (gtpu_main.vtep4, ip->ip4.as_u32) :
- hash_get_mem (gtpu_main.vtep6, &ip->ip6);
- ASSERT (vtep);
- if (--(*vtep) != 0)
- return *vtep;
- ip46_address_is_ip4 (ip) ?
- hash_unset (gtpu_main.vtep4, ip->ip4.as_u32) :
- hash_unset_mem_free (>pu_main.vtep6, &ip->ip6);
- return 0;
-}
-
typedef CLIB_PACKED (union
{
struct
{
ASSERT (ip46_address_is_multicast (ip));
uword *p = hash_get_mem (gtpu_main.mcast_shared, ip);
- ASSERT (p);
+ ALWAYS_ASSERT (p);
return (mcast_shared_t)
{
.as_u64 = *p};
hash_unset_mem_free (>pu_main.mcast_shared, dst);
}
-int vnet_gtpu_add_del_tunnel
- (vnet_gtpu_add_del_tunnel_args_t * a, u32 * sw_if_indexp)
+int vnet_gtpu_add_mod_del_tunnel
+ (vnet_gtpu_add_mod_del_tunnel_args_t * a, u32 * sw_if_indexp)
{
gtpu_main_t *gtm = >pu_main;
gtpu_tunnel_t *t = 0;
u32 sw_if_index = ~0;
gtpu4_tunnel_key_t key4;
gtpu6_tunnel_key_t key6;
- u32 is_ip6 = a->is_ip6;
+ bool is_ip6 = !ip46_address_is_ip4 (&a->dst);
if (!is_ip6)
{
p = hash_get_mem (gtm->gtpu6_tunnel_by_key, &key6);
}
- if (a->is_add)
+ if (a->opn == GTPU_ADD_TUNNEL)
{
l2input_main_t *l2im = &l2input_main;
foreach_copy_field;
#undef _
+ /* default to same as local rx teid */
+ if (t->tteid == 0)
+ t->tteid = t->teid;
+
ip_udp_gtpu_rewrite (t, is_ip6);
+ /* clear the flow index */
+ t->flow_index = ~0;
+
/* copy the key */
if (is_ip6)
hash_set_mem_alloc (>m->gtpu6_tunnel_by_key, &key6,
if (!ip46_address_is_multicast (&t->dst))
{
/* Unicast tunnel -
- * source the FIB entry for the tunnel's destination
- * and become a child thereof. The tunnel will then get poked
+ * Track the FIB entry for the tunnel's destination.
+ * The tunnel will then get poked
* when the forwarding for the entry updates, and the tunnel can
* re-stack accordingly
*/
- vtep_addr_ref (&t->src);
- t->fib_entry_index = fib_table_entry_special_add
- (t->encap_fib_index, &tun_dst_pfx, FIB_SOURCE_RR,
- FIB_ENTRY_FLAG_NONE);
- t->sibling_index = fib_entry_child_add
- (t->fib_entry_index, gtm->fib_node_type, t - gtm->tunnels);
+ vtep_addr_ref (>m->vtep_table, t->encap_fib_index, &t->src);
+ t->fib_entry_index = fib_entry_track (t->encap_fib_index,
+ &tun_dst_pfx,
+ gtm->fib_node_type,
+ t - gtm->tunnels,
+ &t->sibling_index);
gtpu_tunnel_restack_dpo (t);
}
else
*/
fib_protocol_t fp = fib_ip_proto (is_ip6);
- if (vtep_addr_ref (&t->dst) == 1)
+ if (vtep_addr_ref (>m->vtep_table,
+ t->encap_fib_index, &t->dst) == 1)
{
fib_node_index_t mfei;
adj_index_t ai;
.frp_addr = zero_addr,
.frp_sw_if_index = 0xffffffff,
.frp_fib_index = ~0,
- .frp_weight = 0,
+ .frp_weight = 1,
.frp_flags = FIB_ROUTE_PATH_LOCAL,
+ .frp_mitf_flags = MFIB_ITF_FLAG_FORWARD,
};
const mfib_prefix_t mpfx = {
.fp_proto = fp,
* - the accepting interface is that from the API
*/
mfib_table_entry_path_update (t->encap_fib_index,
- &mpfx,
- MFIB_SOURCE_GTPU,
- &path, MFIB_ITF_FLAG_FORWARD);
+ &mpfx, MFIB_SOURCE_GTPU, &path);
path.frp_sw_if_index = a->mcast_sw_if_index;
path.frp_flags = FIB_ROUTE_PATH_FLAG_NONE;
+ path.frp_mitf_flags = MFIB_ITF_FLAG_ACCEPT;
mfei = mfib_table_entry_path_update (t->encap_fib_index,
&mpfx,
- MFIB_SOURCE_GTPU,
- &path,
- MFIB_ITF_FLAG_ACCEPT);
+ MFIB_SOURCE_GTPU, &path);
/*
* Create the mcast adjacency to send traffic to the group
}
else
{
- /* deleting a tunnel: tunnel must exist */
+ /* mod-tteid or deleting a tunnel: tunnel must exist */
if (!p)
return VNET_API_ERROR_NO_SUCH_ENTRY;
t = pool_elt_at_index (gtm->tunnels, p[0]);
sw_if_index = t->sw_if_index;
+ if (a->opn == GTPU_UPD_TTEID)
+ {
+ if (a->tteid == 0)
+ return VNET_API_ERROR_INVALID_VALUE;
+ t->tteid = a->tteid;
+ ip_udp_gtpu_rewrite (t, is_ip6);
+ return 0;
+ }
+
+ /* delete tunnel */
vnet_sw_interface_set_flags (vnm, t->sw_if_index, 0 /* down */ );
vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, t->sw_if_index);
si->flags |= VNET_SW_INTERFACE_FLAG_HIDDEN;
if (!ip46_address_is_multicast (&t->dst))
{
- vtep_addr_unref (&t->src);
- fib_entry_child_remove (t->fib_entry_index, t->sibling_index);
- fib_table_entry_delete_index (t->fib_entry_index, FIB_SOURCE_RR);
+ if (t->flow_index != ~0)
+ vnet_flow_del (vnm, t->flow_index);
+
+ vtep_addr_unref (>m->vtep_table, t->encap_fib_index, &t->src);
+ fib_entry_untrack (t->fib_entry_index, t->sibling_index);
}
- else if (vtep_addr_unref (&t->dst) == 0)
+ else if (vtep_addr_unref (>m->vtep_table,
+ t->encap_fib_index, &t->dst) == 0)
{
mcast_shared_remove (&t->dst);
}
if (sw_if_indexp)
*sw_if_indexp = sw_if_index;
+ if (a->opn == GTPU_ADD_TUNNEL)
+ {
+ /* register udp ports */
+ if (!is_ip6 && !udp_is_valid_dst_port (UDP_DST_PORT_GTPU, 1))
+ udp_register_dst_port (gtm->vlib_main, UDP_DST_PORT_GTPU,
+ gtpu4_input_node.index, /* is_ip4 */ 1);
+ if (is_ip6 && !udp_is_valid_dst_port (UDP_DST_PORT_GTPU6, 0))
+ udp_register_dst_port (gtm->vlib_main, UDP_DST_PORT_GTPU6,
+ gtpu6_input_node.index, /* is_ip4 */ 0);
+ }
+
return 0;
}
{
unformat_input_t _line_input, *line_input = &_line_input;
ip46_address_t src, dst;
- u8 is_add = 1;
+ u8 opn = GTPU_ADD_TUNNEL;
u8 src_set = 0;
u8 dst_set = 0;
u8 grp_set = 0;
u32 encap_fib_index = 0;
u32 mcast_sw_if_index = ~0;
u32 decap_next_index = GTPU_INPUT_NEXT_L2_INPUT;
- u32 teid = 0;
+ u32 teid = 0, tteid = 0;
u32 tmp;
int rv;
- vnet_gtpu_add_del_tunnel_args_t _a, *a = &_a;
+ vnet_gtpu_add_mod_del_tunnel_args_t _a, *a = &_a;
u32 tunnel_sw_if_index;
clib_error_t *error = NULL;
{
if (unformat (line_input, "del"))
{
- is_add = 0;
+ opn = GTPU_DEL_TUNNEL;
}
else if (unformat (line_input, "src %U",
unformat_ip4_address, &src.ip4))
;
else if (unformat (line_input, "teid %d", &teid))
;
+ else if (unformat (line_input, "tteid %d", &tteid))
+ ;
+ else if (unformat (line_input, "upd-tteid %d", &tteid))
+ opn = GTPU_UPD_TTEID;
else
{
error = clib_error_return (0, "parse error: '%U'",
}
}
- if (src_set == 0)
+ if (teid == 0)
+ {
+ error = clib_error_return (0, "tunnel teid specified");
+ goto done;
+ }
+
+ if (src_set == 0 && opn == GTPU_ADD_TUNNEL)
{
error = clib_error_return (0, "tunnel src address not specified");
goto done;
clib_memset (a, 0, sizeof (*a));
- a->is_add = is_add;
- a->is_ip6 = ipv6_set;
+ a->opn = opn;
#define _(x) a->x = x;
foreach_copy_field;
#undef _
- rv = vnet_gtpu_add_del_tunnel (a, &tunnel_sw_if_index);
+ rv = vnet_gtpu_add_mod_del_tunnel (a, &tunnel_sw_if_index);
switch (rv)
{
case 0:
- if (is_add)
+ if (opn == GTPU_ADD_TUNNEL)
vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
vnet_get_main (), tunnel_sw_if_index);
break;
error = clib_error_return (0, "tunnel does not exist...");
goto done;
+ case VNET_API_ERROR_INVALID_VALUE:
+ error = clib_error_return (0, "tx teid not specified...");
+ goto done;
+
default:
error = clib_error_return
(0, "vnet_gtpu_add_del_tunnel returned %d", rv);
/*?
* Add or delete a GTPU Tunnel.
*
- * GTPU provides the features needed to allow L2 bridge domains (BDs)
+ * GTPU can be used to transport Ethernet packets as its PDU type to
+ * provides allow L2 network or bridge domains (BDs)
* to span multiple servers. This is done by building an L2 overlay on
* top of an L3 network underlay using GTPU tunnels.
*
- * This makes it possible for servers to be co-located in the same data
- * center or be separated geographically as long as they are reachable
- * through the underlay L3 network.
- *
- * You can refer to this kind of L2 overlay bridge domain as a GTPU
- * (Virtual eXtensible VLAN) segment.
+ * GTPU can also be used to transport IP packetes as its PDU type to
+ * allow IP forwarding over underlay network, e.g. between RAN and UPF
+ * for mobility deplyments.
*
* @cliexpar
* Example of how to create a GTPU Tunnel:
- * @cliexcmd{create gtpu tunnel src 10.0.3.1 dst 10.0.3.3 teid 13 encap-vrf-id 7}
+ * @cliexcmd{create gtpu tunnel src 10.0.3.1 dst 10.0.3.3 teid 13 tteid 55 encap-vrf-id 7}
* Example of how to delete a GTPU Tunnel:
- * @cliexcmd{create gtpu tunnel src 10.0.3.1 dst 10.0.3.3 teid 13 del}
+ * @cliexcmd{create gtpu tunnel src 10.0.3.1 dst 10.0.3.3 teid 13 encap-vrf-id 7 del}
+ * Example of how to update tx TEID of a GTPU Tunnel:
+ * @cliexcmd{create gtpu tunnel src 10.0.3.1 dst 10.0.3.3 encap-vrf-id 7 upd-tteid 55}
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (create_gtpu_tunnel_command, static) = {
.path = "create gtpu tunnel",
.short_help =
- "create gtpu tunnel src <local-vtep-addr>"
- " {dst <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} teid <nn>"
- " [encap-vrf-id <nn>] [decap-next [l2|ip4|ip6|node <name>]] [del]",
+ "create gtpu tunnel src <local-tep-addr>"
+ " {dst <remote-tep-addr>|group <mcast-addr> <intf-name>}"
+ " teid <nn> [tteid <nn>] [encap-vrf-id <nn>]"
+ " [decap-next [l2|ip4|ip6|node <name>]] [del | upd-tteid <nn>]",
.function = gtpu_add_del_tunnel_command_fn,
};
/* *INDENT-ON* */
* @cliexpar
* Example of how to display the GTPU Tunnel entries:
* @cliexstart{show gtpu tunnel}
- * [0] src 10.0.3.1 dst 10.0.3.3 teid 13 encap_fib_index 0 sw_if_index 5 decap_next l2
+ * [0] src 10.0.3.1 dst 10.0.3.3 teid 13 tx-teid 55 encap_fib_index 0 sw_if_index 5 decap_next l2
* @cliexend
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (set_interface_ip6_gtpu_bypass_command, static) = {
.path = "set interface ip6 gtpu-bypass",
.function = set_ip6_gtpu_bypass,
- .short_help = "set interface ip gtpu-bypass <interface> [del]",
+ .short_help = "set interface ip6 gtpu-bypass <interface> [del]",
+};
+/* *INDENT-ON* */
+
+int
+vnet_gtpu_add_del_rx_flow (u32 hw_if_index, u32 t_index, int is_add)
+{
+ gtpu_main_t *gtm = >pu_main;
+ gtpu_tunnel_t *t = pool_elt_at_index (gtm->tunnels, t_index);
+ vnet_main_t *vnm = vnet_get_main ();
+ if (is_add)
+ {
+ if (t->flow_index == ~0)
+ {
+ vnet_flow_t flow = {
+ .actions =
+ VNET_FLOW_ACTION_REDIRECT_TO_NODE | VNET_FLOW_ACTION_MARK |
+ VNET_FLOW_ACTION_BUFFER_ADVANCE,
+ .mark_flow_id = t_index + gtm->flow_id_start,
+ .redirect_node_index = gtpu4_flow_input_node.index,
+ .buffer_advance = sizeof (ethernet_header_t)
+ + sizeof (ip4_header_t) + sizeof (udp_header_t),
+ .type = VNET_FLOW_TYPE_IP4_GTPU,
+ .ip4_gtpu = {
+ .protocol.prot = IP_PROTOCOL_UDP,
+ .src_addr.addr = t->dst.ip4,
+ .src_addr.mask.as_u32 = ~0,
+ .dst_addr.addr = t->src.ip4,
+ .dst_addr.mask.as_u32 = ~0,
+ .teid = t->teid,
+ }
+ ,
+ };
+ vnet_flow_add (vnm, &flow, &t->flow_index);
+ }
+
+ return vnet_flow_enable (vnm, t->flow_index, hw_if_index);
+ }
+
+ /* flow index is removed when the tunnel is deleted */
+ return vnet_flow_disable (vnm, t->flow_index, hw_if_index);
+}
+
+u32
+vnet_gtpu_get_tunnel_index (u32 sw_if_index)
+{
+ gtpu_main_t *gtm = >pu_main;
+
+ if (sw_if_index >= vec_len (gtm->tunnel_index_by_sw_if_index))
+ return ~0;
+ return gtm->tunnel_index_by_sw_if_index[sw_if_index];
+}
+
+static clib_error_t *
+gtpu_offload_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ vnet_main_t *vnm = vnet_get_main ();
+ u32 rx_sw_if_index = ~0;
+ u32 hw_if_index = ~0;
+ int is_add = 1;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "hw %U", unformat_vnet_hw_interface, vnm,
+ &hw_if_index))
+ continue;
+ if (unformat (line_input, "rx %U", unformat_vnet_sw_interface, vnm,
+ &rx_sw_if_index))
+ continue;
+ if (unformat (line_input, "del"))
+ {
+ is_add = 0;
+ continue;
+ }
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, line_input);
+ }
+
+ if (rx_sw_if_index == ~0)
+ return clib_error_return (0, "missing rx interface");
+ if (hw_if_index == ~0)
+ return clib_error_return (0, "missing hw interface");
+
+ u32 t_index = vnet_gtpu_get_tunnel_index (rx_sw_if_index);;
+ if (t_index == ~0)
+ return clib_error_return (0, "%U is not a gtpu tunnel",
+ format_vnet_sw_if_index_name, vnm,
+ rx_sw_if_index);
+
+ gtpu_main_t *gtm = >pu_main;
+ gtpu_tunnel_t *t = pool_elt_at_index (gtm->tunnels, t_index);
+
+ /* first support ipv4 hw offload */
+ if (!ip46_address_is_ip4 (&t->dst))
+ return clib_error_return (0, "currently only IPV4 tunnels are supported");
+
+ /* inner protocol should be IPv4/IPv6 */
+ if ((t->decap_next_index != GTPU_INPUT_NEXT_IP4_INPUT) &&
+ (t->decap_next_index != GTPU_INPUT_NEXT_IP6_INPUT))
+ return clib_error_return (0,
+ "currently only inner IPv4/IPv6 protocol is supported");
+
+ vnet_hw_interface_t *hw_if = vnet_get_hw_interface (vnm, hw_if_index);
+ ip4_main_t *im = &ip4_main;
+ u32 rx_fib_index =
+ vec_elt (im->fib_index_by_sw_if_index, hw_if->sw_if_index);
+
+ if (t->encap_fib_index != rx_fib_index)
+ return clib_error_return (0, "interface/tunnel fib mismatch");
+
+ if (vnet_gtpu_add_del_rx_flow (hw_if_index, t_index, is_add))
+ return clib_error_return (0, "error %s flow",
+ is_add ? "enabling" : "disabling");
+
+ return 0;
+}
+
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (gtpu_offload_command, static) = {
+ .path = "set flow-offload gtpu",
+ .short_help =
+ "set flow-offload gtpu hw <inerface-name> rx <tunnel-name> [del]",
+ .function = gtpu_offload_command_fn,
};
/* *INDENT-ON* */
gtm->vnet_main = vnet_get_main ();
gtm->vlib_main = vm;
+ vnet_flow_get_range (gtm->vnet_main, "gtpu", 1024 * 1024,
+ >m->flow_id_start);
+
/* initialize the ip6 hash */
gtm->gtpu6_tunnel_by_key = hash_create_mem (0,
sizeof (gtpu6_tunnel_key_t),
sizeof (uword));
- gtm->vtep6 = hash_create_mem (0, sizeof (ip6_address_t), sizeof (uword));
+ gtm->vtep_table = vtep_table_create ();
gtm->mcast_shared = hash_create_mem (0,
sizeof (ip46_address_t),
sizeof (mcast_shared_t));
- udp_register_dst_port (vm, UDP_DST_PORT_GTPU,
- gtpu4_input_node.index, /* is_ip4 */ 1);
- udp_register_dst_port (vm, UDP_DST_PORT_GTPU6,
- gtpu6_input_node.index, /* is_ip4 */ 0);
-
gtm->fib_node_type = fib_node_register_new_type (>pu_vft);
return 0;
/* *INDENT-OFF* */
VLIB_PLUGIN_REGISTER () = {
.version = VPP_BUILD_VER,
- .description = "GTPv1-U",
+ .description = "GPRS Tunnelling Protocol, User Data (GTPv1-U)",
};
/* *INDENT-ON* */
Code Review / vpp.git / blobdiff