#include <vnet/ipip/ipip.h>
#include <vnet/vnet.h>
#include <vnet/adj/adj_nbr.h>
+#include <vnet/adj/adj_midchain.h>
#include <vnet/fib/ip4_fib.h>
#include <vnet/fib/ip6_fib.h>
#include <vnet/ip/format.h>
ip4->src_address.as_u32 = t->tunnel_src.ip4.as_u32;
ip4->dst_address.as_u32 = t->tunnel_dst.ip4.as_u32;
ip4->checksum = ip4_header_checksum (ip4);
+ if (!(t->flags & IPIP_TUNNEL_FLAG_ENCAP_COPY_DSCP))
+ ip4_header_set_dscp (ip4, t->dscp);
+ if (t->flags & IPIP_TUNNEL_FLAG_ENCAP_SET_DF)
+ ip4_header_set_df (ip4);
break;
case IPIP_TRANSPORT_IP6:
ip6->src_address.as_u64[1] = t->tunnel_src.ip6.as_u64[1];
ip6->dst_address.as_u64[0] = t->tunnel_dst.ip6.as_u64[0];
ip6->dst_address.as_u64[1] = t->tunnel_dst.ip6.as_u64[1];
+ if (!(t->flags & IPIP_TUNNEL_FLAG_ENCAP_COPY_DSCP))
+ ip6_set_dscp_network_order (ip6, t->dscp);
break;
+
default:
/* pass through */
;
const void *data)
{
ip4_header_t *ip4;
+ const ipip_tunnel_t *t = data;
ip4 = vlib_buffer_get_current (b);
ip4->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b));
- ip4->protocol =
- adj->ia_link == VNET_LINK_IP6 ? IP_PROTOCOL_IPV6 : IP_PROTOCOL_IP_IN_IP;
+ switch (adj->ia_link)
+ {
+ case VNET_LINK_IP6:
+ ip4->protocol = IP_PROTOCOL_IPV6;
+ if (t->flags & IPIP_TUNNEL_FLAG_ENCAP_COPY_DSCP)
+ ip4_header_set_dscp (ip4,
+ ip6_dscp_network_order ((ip6_header_t *) (ip4 +
+ 1)));
+ if (t->flags & IPIP_TUNNEL_FLAG_ENCAP_COPY_ECN)
+ ip4_header_set_ecn (ip4,
+ ip6_ecn_network_order ((ip6_header_t *) (ip4 +
+ 1)));
+ break;
+
+ case VNET_LINK_IP4:
+ ip4->protocol = IP_PROTOCOL_IP_IN_IP;
+ if (t->flags & IPIP_TUNNEL_FLAG_ENCAP_COPY_DSCP)
+ ip4_header_set_dscp (ip4, ip4_header_get_dscp (ip4 + 1));
+ if (t->flags & IPIP_TUNNEL_FLAG_ENCAP_COPY_ECN)
+ ip4_header_set_ecn (ip4, ip4_header_get_ecn (ip4 + 1));
+ if ((t->flags & IPIP_TUNNEL_FLAG_ENCAP_COPY_DF) &&
+ ip4_header_get_df (ip4 + 1))
+ ip4_header_set_df (ip4);
+ break;
+
+ default:
+ break;
+ }
+
ip4->checksum = ip4_header_checksum (ip4);
}
const void *data)
{
ip6_header_t *ip6;
+ const ipip_tunnel_t *t = data;
+
+ /* Must set locally originated otherwise we're not allowed to
+ fragment the packet later */
+ b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
ip6 = vlib_buffer_get_current (b);
ip6->payload_length =
clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b) -
sizeof (*ip6));
- ip6->protocol =
- adj->ia_link == VNET_LINK_IP6 ? IP_PROTOCOL_IPV6 : IP_PROTOCOL_IP_IN_IP;
+ switch (adj->ia_link)
+ {
+ case VNET_LINK_IP6:
+ ip6->protocol = IP_PROTOCOL_IPV6;
+ if (t->flags & IPIP_TUNNEL_FLAG_ENCAP_COPY_DSCP)
+ ip6_set_dscp_network_order (ip6, ip6_dscp_network_order (ip6 + 1));
+ if (t->flags & IPIP_TUNNEL_FLAG_ENCAP_COPY_ECN)
+ ip6_set_ecn_network_order (ip6, ip6_ecn_network_order (ip6 + 1));
+ break;
+
+ case VNET_LINK_IP4:
+ ip6->protocol = IP_PROTOCOL_IP_IN_IP;
+ if (t->flags & IPIP_TUNNEL_FLAG_ENCAP_COPY_DSCP)
+ ip6_set_dscp_network_order
+ (ip6, ip4_header_get_dscp ((ip4_header_t *) (ip6 + 1)));
+ if (t->flags & IPIP_TUNNEL_FLAG_ENCAP_COPY_ECN)
+ ip6_set_ecn_network_order
+ (ip6, ip4_header_get_ecn ((ip4_header_t *) (ip6 + 1)));
+ break;
+
+ default:
+ break;
+ }
}
static void
if ((vnet_hw_interface_get_flags (vnet_get_main (), t->hw_if_index) &
VNET_HW_INTERFACE_FLAG_LINK_UP) == 0)
{
- adj_nbr_midchain_unstack (ai);
- return;
+ adj_midchain_delegate_unstack (ai);
}
-
- dpo_id_t tmp = DPO_INVALID;
- fib_forward_chain_type_t fib_fwd =
- t->transport ==
- IPIP_TRANSPORT_IP6 ? FIB_FORW_CHAIN_TYPE_UNICAST_IP6 :
- FIB_FORW_CHAIN_TYPE_UNICAST_IP4;
-
- fib_entry_contribute_forwarding (t->p2p.fib_entry_index, fib_fwd, &tmp);
- if (DPO_LOAD_BALANCE == tmp.dpoi_type)
+ else
{
- /*
- * post IPIP rewrite we will load-balance. However, the IPIP encap
- * is always the same for this adjacency/tunnel and hence the IP/IPIP
- * src,dst hash is always the same result too. So we do that hash now and
- * stack on the choice.
- * If the choice is an incomplete adj then we will need a poke when
- * it becomes complete. This happens since the adj update walk propagates
- * as far a recursive paths.
- */
- const dpo_id_t *choice;
- load_balance_t *lb;
- int hash;
-
- lb = load_balance_get (tmp.dpoi_index);
-
- if (fib_fwd == FIB_FORW_CHAIN_TYPE_UNICAST_IP4)
- hash = ip4_compute_flow_hash ((ip4_header_t *) adj_get_rewrite (ai),
- lb->lb_hash_config);
- else
- hash = ip6_compute_flow_hash ((ip6_header_t *) adj_get_rewrite (ai),
- lb->lb_hash_config);
- choice =
- load_balance_get_bucket_i (lb, hash & lb->lb_n_buckets_minus_1);
- dpo_copy (&tmp, choice);
+ /* *INDENT-OFF* */
+ fib_prefix_t dst = {
+ .fp_len = t->transport == IPIP_TRANSPORT_IP6 ? 128 : 32,
+ .fp_proto = (t->transport == IPIP_TRANSPORT_IP6 ?
+ FIB_PROTOCOL_IP6 :
+ FIB_PROTOCOL_IP4),
+ .fp_addr = t->tunnel_dst
+ };
+ /* *INDENT-ON* */
+
+ adj_midchain_delegate_stack (ai, t->fib_index, &dst);
}
-
- adj_nbr_midchain_stack (ai, &tmp);
- dpo_reset (&tmp);
}
static adj_walk_rc_t
void
ipip_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
{
- ipip_tunnel_t *t;
adj_midchain_fixup_t f;
+ ipip_tunnel_t *t;
+ adj_flags_t af;
t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
if (!t)
return;
f = t->transport == IPIP_TRANSPORT_IP6 ? ipip6_fixup : ipip4_fixup;
-
- adj_nbr_midchain_update_rewrite (ai, f, NULL,
- (VNET_LINK_ETHERNET ==
- adj_get_link_type (ai) ?
- ADJ_FLAG_MIDCHAIN_NO_COUNT :
- ADJ_FLAG_NONE), ipip_build_rewrite (vnm,
- sw_if_index,
- adj_get_link_type
- (ai),
- NULL));
+ af = ADJ_FLAG_MIDCHAIN_IP_STACK;
+ if (VNET_LINK_ETHERNET == adj_get_link_type (ai))
+ af |= ADJ_FLAG_MIDCHAIN_NO_COUNT;
+
+ adj_nbr_midchain_update_rewrite (ai, f, t, af,
+ ipip_build_rewrite (vnm,
+ sw_if_index,
+ adj_get_link_type
+ (ai), NULL));
ipip_tunnel_stack (ai);
}
+u8 *
+format_ipip_tunnel_flags (u8 * s, va_list * args)
+{
+ ipip_tunnel_flags_t f = va_arg (*args, int);
+
+ if (f == IPIP_TUNNEL_FLAG_NONE)
+ return (format (s, "none"));
+
+#define _(a,b,c) if (f & IPIP_TUNNEL_FLAG_##a) s = format(s, "%s ", b);
+ forech_ipip_tunnel_flag
+#undef _
+ return (s);
+}
+
static u8 *
format_ipip_tunnel_name (u8 * s, va_list * args)
{
return /* no error */ 0;
}
+static int
+ipip_tunnel_desc (u32 sw_if_index,
+ ip46_address_t * src, ip46_address_t * dst, u8 * is_l2)
+{
+ ipip_tunnel_t *t;
+
+ t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
+ if (!t)
+ return -1;
+
+ *src = t->tunnel_src;
+ *dst = t->tunnel_dst;
+ *is_l2 = 0;
+
+ return (0);
+}
+
/* *INDENT-OFF* */
VNET_DEVICE_CLASS(ipip_device_class) = {
.name = "IPIP tunnel device",
.format_device = format_ipip_device,
.format_tx_trace = format_ipip_tx_trace,
.admin_up_down_function = ipip_interface_admin_up_down,
+ .ip_tun_desc = ipip_tunnel_desc,
#ifdef SOON
.clear counter = 0;
#endif
ipip_tunnel_db_find_by_sw_if_index (u32 sw_if_index)
{
ipip_main_t *gm = &ipip_main;
- if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
+ if (vec_len (gm->tunnel_index_by_sw_if_index) <= sw_if_index)
return NULL;
u32 ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
if (ti == ~0)
t->key = NULL;
}
-static ipip_tunnel_t *
-ipip_tunnel_from_fib_node (fib_node_t * node)
-{
- ipip_main_t *gm = &ipip_main;
- ASSERT (gm->fib_node_type == node->fn_type);
- return ((ipip_tunnel_t *) (((char *) node) -
- offsetof (ipip_tunnel_t, p2p.node)));
-}
-
-static fib_node_back_walk_rc_t
-ipip_tunnel_back_walk (fib_node_t * node, fib_node_back_walk_ctx_t * ctx)
-{
- ipip_tunnel_restack (ipip_tunnel_from_fib_node (node));
-
- return (FIB_NODE_BACK_WALK_CONTINUE);
-}
-
-static fib_node_t *
-ipip_tunnel_fib_node_get (fib_node_index_t index)
-{
- ipip_tunnel_t *gt;
- ipip_main_t *gm;
-
- gm = &ipip_main;
- gt = pool_elt_at_index (gm->tunnels, index);
-
- return (>->p2p.node);
-}
-
-static void
-ipip_tunnel_last_lock_gone (fib_node_t * node)
-{
- /*
- * The MPLS IPIP tunnel is a root of the graph. As such
- * it never has children and thus is never locked.
- */
- ASSERT (0);
-}
-
-/*
- * Virtual function table registered by IPIP tunnels
- * for participation in the FIB object graph.
- */
-const static fib_node_vft_t ipip_vft = {
- .fnv_get = ipip_tunnel_fib_node_get,
- .fnv_last_lock = ipip_tunnel_last_lock_gone,
- .fnv_back_walk = ipip_tunnel_back_walk,
-};
-
-static void
-ipip_fib_add (ipip_tunnel_t * t)
-{
- ipip_main_t *gm = &ipip_main;
- fib_prefix_t dst = {.fp_len = t->transport == IPIP_TRANSPORT_IP6 ? 128 : 32,
- .fp_proto =
- t->transport ==
- IPIP_TRANSPORT_IP6 ? FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4,
- .fp_addr = t->tunnel_dst
- };
-
- t->p2p.fib_entry_index =
- fib_table_entry_special_add (t->fib_index, &dst, FIB_SOURCE_RR,
- FIB_ENTRY_FLAG_NONE);
- t->p2p.sibling_index =
- fib_entry_child_add (t->p2p.fib_entry_index, gm->fib_node_type,
- t->dev_instance);
-}
-
-static void
-ipip_fib_delete (ipip_tunnel_t * t)
-{
- fib_entry_child_remove (t->p2p.fib_entry_index, t->p2p.sibling_index);
- fib_table_entry_delete_index (t->p2p.fib_entry_index, FIB_SOURCE_RR);
- fib_node_deinit (&t->p2p.node);
-}
-
int
ipip_add_tunnel (ipip_transport_t transport,
u32 instance, ip46_address_t * src, ip46_address_t * dst,
- u32 fib_index, u32 * sw_if_indexp)
+ u32 fib_index, ipip_tunnel_flags_t flags,
+ ip_dscp_t dscp, u32 * sw_if_indexp)
{
ipip_main_t *gm = &ipip_main;
vnet_main_t *vnm = gm->vnet_main;
return VNET_API_ERROR_IF_ALREADY_EXISTS;
pool_get_aligned (gm->tunnels, t, CLIB_CACHE_LINE_BYTES);
- memset (t, 0, sizeof (*t));
+ clib_memset (t, 0, sizeof (*t));
/* Reconcile the real dev_instance and a possible requested instance */
u32 t_idx = t - gm->tunnels; /* tunnel index (or instance) */
t->dev_instance = t_idx; /* actual */
t->user_instance = u_idx; /* name */
- fib_node_init (&t->p2p.node, gm->fib_node_type);
hw_if_index = vnet_register_interface (vnm, ipip_device_class.index, t_idx,
ipip_hw_interface_class.index,
t->hw_if_index = hw_if_index;
t->fib_index = fib_index;
t->sw_if_index = sw_if_index;
-
+ t->dscp = dscp;
+ t->flags = flags;
t->transport = transport;
+
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_idx;
hi->min_packet_bytes = 64 + sizeof (ip6_header_t);
}
- hi->per_packet_overhead_bytes = /* preamble */ 8 + /* inter frame gap */ 12;
-
/* Standard default ipip MTU. */
- hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] = 9000;
+ vnet_sw_interface_set_mtu (vnm, sw_if_index, 9000);
t->tunnel_src = *src;
t->tunnel_dst = *dst;
ipip_tunnel_db_add (t, &key);
- /*
- * Source the FIB entry for the tunnel's destination and become a
- * child thereof. The tunnel will then get poked when the forwarding
- * for the entry updates, and the tunnel can re-stack accordingly
- */
- ipip_fib_add (t);
if (sw_if_indexp)
*sw_if_indexp = sw_if_index;
vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
gm->tunnel_index_by_sw_if_index[sw_if_index] = ~0;
vnet_delete_hw_interface (vnm, t->hw_if_index);
- ipip_fib_delete (t);
hash_unset (gm->instance_used, t->user_instance);
ipip_tunnel_db_remove (t);
pool_put (gm->tunnels, t);
{
ipip_main_t *gm = &ipip_main;
- memset (gm, 0, sizeof (gm[0]));
+ clib_memset (gm, 0, sizeof (gm[0]));
gm->vlib_main = vm;
gm->vnet_main = vnet_get_main ();
gm->tunnel_by_key =
hash_create_mem (0, sizeof (ipip_tunnel_key_t), sizeof (uword));
- gm->fib_node_type = fib_node_register_new_type (&ipip_vft);
return 0;
}
Code Review / vpp.git / blobdiff