#include <vnet/fib/ip6_fib.h>
#include <vnet/ip/format.h>
#include <vnet/ipip/ipip.h>
+#include <vnet/nhrp/nhrp.h>
ipip_main_t ipip_main;
ipip_build_rewrite (vnet_main_t * vnm, u32 sw_if_index,
vnet_link_t link_type, const void *dst_address)
{
+ const ip46_address_t *dst;
ip4_header_t *ip4;
ip6_header_t *ip6;
u8 *rewrite = NULL;
- ipip_tunnel_t *t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
+ ipip_tunnel_t *t;
+
+ dst = dst_address;
+ t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
if (!t)
/* not one of ours */
ip4->ttl = 64;
/* fixup ip4 header length, protocol and checksum after-the-fact */
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);
+ ip4->dst_address.as_u32 = dst->ip4.as_u32;
if (!(t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP))
ip4_header_set_dscp (ip4, t->dscp);
if (t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_SET_DF)
ip4_header_set_df (ip4);
+ ip4->checksum = ip4_header_checksum (ip4);
break;
case IPIP_TRANSPORT_IP6:
/* fixup ip6 header length and protocol after-the-fact */
ip6->src_address.as_u64[0] = t->tunnel_src.ip6.as_u64[0];
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];
+ ip6->dst_address.as_u64[0] = dst->ip6.as_u64[0];
+ ip6->dst_address.as_u64[1] = dst->ip6.as_u64[1];
if (!(t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP))
ip6_set_dscp_network_order (ip6, t->dscp);
break;
-
- default:
- /* pass through */
- ;
}
return (rewrite);
}
ipip4_fixup (vlib_main_t * vm, const ip_adjacency_t * adj, vlib_buffer_t * b,
const void *data)
{
+ tunnel_encap_decap_flags_t flags;
ip4_header_t *ip4;
- const ipip_tunnel_t *t = data;
+
+ flags = pointer_to_uword (data);
ip4 = vlib_buffer_get_current (b);
ip4->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b));
{
case VNET_LINK_IP6:
ip4->protocol = IP_PROTOCOL_IPV6;
- if (t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
+ if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
ip4_header_set_dscp (ip4,
ip6_dscp_network_order ((ip6_header_t *) (ip4 +
1)));
- if (t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
+ if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
ip4_header_set_ecn (ip4,
ip6_ecn_network_order ((ip6_header_t *) (ip4 +
1)));
case VNET_LINK_IP4:
ip4->protocol = IP_PROTOCOL_IP_IN_IP;
- if (t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
+ if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
ip4_header_set_dscp (ip4, ip4_header_get_dscp (ip4 + 1));
- if (t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
+ if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
ip4_header_set_ecn (ip4, ip4_header_get_ecn (ip4 + 1));
- if ((t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DF) &&
+ if ((flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DF) &&
ip4_header_get_df (ip4 + 1))
ip4_header_set_df (ip4);
break;
ipip6_fixup (vlib_main_t * vm, const ip_adjacency_t * adj, vlib_buffer_t * b,
const void *data)
{
+ tunnel_encap_decap_flags_t flags;
ip6_header_t *ip6;
- const ipip_tunnel_t *t = data;
+
+ flags = pointer_to_uword (data);
/* Must set locally originated otherwise we're not allowed to
fragment the packet later */
{
case VNET_LINK_IP6:
ip6->protocol = IP_PROTOCOL_IPV6;
- if (t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
+ if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
ip6_set_dscp_network_order (ip6, ip6_dscp_network_order (ip6 + 1));
- if (t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
+ if (flags & TUNNEL_ENCAP_DECAP_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 & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
+ if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
ip6_set_dscp_network_order
(ip6, ip4_header_get_dscp ((ip4_header_t *) (ip6 + 1)));
- if (t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
+ if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
ip6_set_ecn_network_order
(ip6, ip4_header_get_ecn ((ip4_header_t *) (ip6 + 1)));
break;
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));
+ adj_nbr_midchain_update_rewrite
+ (ai, f, uword_to_pointer (t->flags, void *), af,
+ ipip_build_rewrite (vnm, sw_if_index,
+ adj_get_link_type (ai), &t->tunnel_dst));
ipip_tunnel_stack (ai);
}
+typedef struct mipip_walk_ctx_t_
+{
+ const ipip_tunnel_t *t;
+ const nhrp_entry_t *ne;
+} mipip_walk_ctx_t;
+
+static adj_walk_rc_t
+mipip_mk_complete_walk (adj_index_t ai, void *data)
+{
+ mipip_walk_ctx_t *ctx = data;
+ adj_midchain_fixup_t f;
+
+ f = ctx->t->transport == IPIP_TRANSPORT_IP6 ? ipip6_fixup : ipip4_fixup;
+
+ adj_nbr_midchain_update_rewrite
+ (ai, f, uword_to_pointer (ctx->t->flags, void *),
+ ADJ_FLAG_MIDCHAIN_IP_STACK, ipip_build_rewrite (vnet_get_main (),
+ ctx->t->sw_if_index,
+ adj_get_link_type (ai),
+ &nhrp_entry_get_nh
+ (ctx->ne)->fp_addr));
+
+ nhrp_entry_adj_stack (ctx->ne, ai);
+
+ return (ADJ_WALK_RC_CONTINUE);
+}
+
+static adj_walk_rc_t
+mipip_mk_incomplete_walk (adj_index_t ai, void *data)
+{
+ ipip_tunnel_t *t = data;
+ adj_midchain_fixup_t f;
+
+ f = t->transport == IPIP_TRANSPORT_IP6 ? ipip6_fixup : ipip4_fixup;
+
+ adj_nbr_midchain_update_rewrite (ai, f, NULL, ADJ_FLAG_NONE, NULL);
+
+ adj_midchain_delegate_unstack (ai);
+
+ return (ADJ_WALK_RC_CONTINUE);
+}
+
+void
+mipip_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
+{
+ ipip_main_t *gm = &ipip_main;
+ adj_midchain_fixup_t f;
+ ip_adjacency_t *adj;
+ nhrp_entry_t *ne;
+ ipip_tunnel_t *t;
+ u32 ti;
+
+ adj = adj_get (ai);
+ ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
+ t = pool_elt_at_index (gm->tunnels, ti);
+ f = t->transport == IPIP_TRANSPORT_IP6 ? ipip6_fixup : ipip4_fixup;
+
+ ne = nhrp_entry_find (sw_if_index, &adj->sub_type.nbr.next_hop);
+
+ if (NULL == ne)
+ {
+ // no NHRP entry to provide the next-hop
+ adj_nbr_midchain_update_rewrite
+ (ai, f, uword_to_pointer (t->flags, void *), ADJ_FLAG_NONE, NULL);
+ return;
+ }
+
+ mipip_walk_ctx_t ctx = {
+ .t = t,
+ .ne = ne
+ };
+ adj_nbr_walk_nh (sw_if_index,
+ adj->ia_nh_proto,
+ &adj->sub_type.nbr.next_hop, mipip_mk_complete_walk, &ctx);
+}
+
static u8 *
format_ipip_tunnel_name (u8 * s, va_list * args)
{
.update_adjacency = ipip_update_adj,
.flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
};
+
+VNET_HW_INTERFACE_CLASS(mipip_hw_interface_class) = {
+ .name = "mIPIP",
+ //.format_header = format_ipip_header_with_length,
+ //.unformat_header = unformat_ipip_header,
+ .build_rewrite = ipip_build_rewrite,
+ .update_adjacency = mipip_update_adj,
+ .flags = VNET_HW_INTERFACE_CLASS_FLAG_NBMA,
+};
/* *INDENT-ON* */
ipip_tunnel_t *
-ipip_tunnel_db_find (ipip_tunnel_key_t * key)
+ipip_tunnel_db_find (const ipip_tunnel_key_t * key)
{
ipip_main_t *gm = &ipip_main;
uword *p;
}
void
-ipip_tunnel_db_add (ipip_tunnel_t * t, ipip_tunnel_key_t * key)
+ipip_tunnel_db_add (ipip_tunnel_t * t, const ipip_tunnel_key_t * key)
{
ipip_main_t *gm = &ipip_main;
- t->key = clib_mem_alloc (sizeof (*t->key));
- clib_memcpy (t->key, key, sizeof (*key));
- hash_set_mem (gm->tunnel_by_key, t->key, t->dev_instance);
+ hash_set_mem_alloc (&gm->tunnel_by_key, key, t->dev_instance);
}
void
-ipip_tunnel_db_remove (ipip_tunnel_t * t)
+ipip_tunnel_db_remove (ipip_tunnel_t * t, const ipip_tunnel_key_t * key)
{
ipip_main_t *gm = &ipip_main;
- hash_unset_mem (gm->tunnel_by_key, t->key);
- clib_mem_free (t->key);
- t->key = NULL;
+ hash_unset_mem_free (&gm->tunnel_by_key, key);
+}
+
+void
+ipip_mk_key_i (ipip_transport_t transport,
+ ipip_mode_t mode,
+ const ip46_address_t * src,
+ const ip46_address_t * dst,
+ u32 fib_index, ipip_tunnel_key_t * key)
+{
+ key->transport = transport;
+ key->mode = mode;
+ key->src = *src;
+ key->dst = *dst;
+ key->fib_index = fib_index;
+ key->__pad = 0;;
+}
+
+void
+ipip_mk_key (const ipip_tunnel_t * t, ipip_tunnel_key_t * key)
+{
+ ipip_mk_key_i (t->transport, t->mode,
+ &t->tunnel_src, &t->tunnel_dst, t->fib_index, key);
+}
+
+static void
+ipip_nhrp_mk_key (const ipip_tunnel_t * t,
+ const nhrp_entry_t * ne, ipip_tunnel_key_t * key)
+{
+ const fib_prefix_t *nh;
+
+ nh = nhrp_entry_get_nh (ne);
+
+ /* construct the key using mode P2P so it can be found in the DP */
+ ipip_mk_key_i (t->transport, IPIP_MODE_P2P,
+ &t->tunnel_src, &nh->fp_addr,
+ nhrp_entry_get_fib_index (ne), key);
+}
+
+static void
+ipip_nhrp_entry_added (const nhrp_entry_t * ne)
+{
+ ipip_main_t *gm = &ipip_main;
+ const ip46_address_t *nh;
+ ipip_tunnel_key_t key;
+ ipip_tunnel_t *t;
+ u32 sw_if_index;
+ u32 t_idx;
+
+ sw_if_index = nhrp_entry_get_sw_if_index (ne);
+ if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
+ return;
+
+ t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
+
+ if (INDEX_INVALID == t_idx)
+ return;
+
+ t = pool_elt_at_index (gm->tunnels, t_idx);
+
+ ipip_nhrp_mk_key (t, ne, &key);
+ ipip_tunnel_db_add (t, &key);
+
+ // update the rewrites for each of the adjacencies for this next-hop
+ mipip_walk_ctx_t ctx = {
+ .t = t,
+ .ne = ne
+ };
+ nh = nhrp_entry_get_peer (ne);
+ adj_nbr_walk_nh (nhrp_entry_get_sw_if_index (ne),
+ (ip46_address_is_ip4 (nh) ?
+ FIB_PROTOCOL_IP4 :
+ FIB_PROTOCOL_IP6), nh, mipip_mk_complete_walk, &ctx);
+}
+
+static void
+ipip_nhrp_entry_deleted (const nhrp_entry_t * ne)
+{
+ ipip_main_t *gm = &ipip_main;
+ const ip46_address_t *nh;
+ ipip_tunnel_key_t key;
+ ipip_tunnel_t *t;
+ u32 sw_if_index;
+ u32 t_idx;
+
+ sw_if_index = nhrp_entry_get_sw_if_index (ne);
+ if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
+ return;
+
+ t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
+
+ if (INDEX_INVALID == t_idx)
+ return;
+
+ t = pool_elt_at_index (gm->tunnels, t_idx);
+
+ ipip_nhrp_mk_key (t, ne, &key);
+ ipip_tunnel_db_remove (t, &key);
+
+ nh = nhrp_entry_get_peer (ne);
+
+ /* make all the adjacencies incomplete */
+ adj_nbr_walk_nh (nhrp_entry_get_sw_if_index (ne),
+ (ip46_address_is_ip4 (nh) ?
+ FIB_PROTOCOL_IP4 :
+ FIB_PROTOCOL_IP6), nh, mipip_mk_incomplete_walk, t);
+}
+
+static walk_rc_t
+ipip_tunnel_delete_nhrp_walk (index_t nei, void *ctx)
+{
+ ipip_tunnel_t *t = ctx;
+ ipip_tunnel_key_t key;
+
+ ipip_nhrp_mk_key (t, nhrp_entry_get (nei), &key);
+ ipip_tunnel_db_remove (t, &key);
+
+ return (WALK_CONTINUE);
+}
+
+static walk_rc_t
+ipip_tunnel_add_nhrp_walk (index_t nei, void *ctx)
+{
+ ipip_tunnel_t *t = ctx;
+ ipip_tunnel_key_t key;
+
+ ipip_nhrp_mk_key (t, nhrp_entry_get (nei), &key);
+ ipip_tunnel_db_add (t, &key);
+
+ return (WALK_CONTINUE);
}
int
ipip_add_tunnel (ipip_transport_t transport,
u32 instance, ip46_address_t * src, ip46_address_t * dst,
u32 fib_index, tunnel_encap_decap_flags_t flags,
- ip_dscp_t dscp, u32 * sw_if_indexp)
+ ip_dscp_t dscp, tunnel_mode_t tmode, u32 * sw_if_indexp)
{
ipip_main_t *gm = &ipip_main;
vnet_main_t *vnm = gm->vnet_main;
ipip_tunnel_t *t;
vnet_hw_interface_t *hi;
u32 hw_if_index, sw_if_index;
- ipip_tunnel_key_t key = {.transport = transport,
- .fib_index = fib_index,
- .src = *src,
- .dst = *dst
- };
+ ipip_tunnel_key_t key;
+ ipip_mode_t mode;
+
+ if (tmode == TUNNEL_MODE_MP && !ip46_address_is_zero (dst))
+ return (VNET_API_ERROR_INVALID_DST_ADDRESS);
+
+ mode = (tmode == TUNNEL_MODE_P2P ? IPIP_MODE_P2P : IPIP_MODE_P2MP);
+ ipip_mk_key_i (transport, mode, src, dst, fib_index, &key);
+
t = ipip_tunnel_db_find (&key);
if (t)
{
t->user_instance = u_idx; /* name */
hw_if_index = vnet_register_interface (vnm, ipip_device_class.index, t_idx,
- ipip_hw_interface_class.index,
+ (mode == IPIP_MODE_P2P ?
+ ipip_hw_interface_class.index :
+ mipip_hw_interface_class.index),
t_idx);
hi = vnet_get_hw_interface (vnm, hw_if_index);
sw_if_index = hi->sw_if_index;
+ t->mode = mode;
t->hw_if_index = hw_if_index;
t->fib_index = fib_index;
t->sw_if_index = sw_if_index;
ipip_tunnel_db_add (t, &key);
+ if (t->mode == IPIP_MODE_P2MP)
+ nhrp_walk_itf (t->sw_if_index, ipip_tunnel_add_nhrp_walk, t);
+
if (sw_if_indexp)
*sw_if_indexp = sw_if_index;
ipip_main_t *gm = &ipip_main;
vnet_main_t *vnm = gm->vnet_main;
ipip_tunnel_t *t;
-
+ ipip_tunnel_key_t key;
t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
if (t == NULL)
return VNET_API_ERROR_NO_SUCH_ENTRY;
+ if (t->mode == IPIP_MODE_P2MP)
+ nhrp_walk_itf (t->sw_if_index, ipip_tunnel_delete_nhrp_walk, t);
+
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);
hash_unset (gm->instance_used, t->user_instance);
- ipip_tunnel_db_remove (t);
+
+ ipip_mk_key (t, &key);
+ ipip_tunnel_db_remove (t, &key);
pool_put (gm->tunnels, t);
return 0;
}
+const static nhrp_vft_t ipip_nhrp_vft = {
+ .nv_added = ipip_nhrp_entry_added,
+ .nv_deleted = ipip_nhrp_entry_deleted,
+};
+
static clib_error_t *
ipip_init (vlib_main_t * vm)
{
gm->tunnel_by_key =
hash_create_mem (0, sizeof (ipip_tunnel_key_t), sizeof (uword));
+ nhrp_register (&ipip_nhrp_vft);
+
return 0;
}
Code Review / vpp.git / blobdiff