vnet_link_t link_type, const void *dst_address)
{
gre_main_t *gm = &gre_main;
+ const ip46_address_t *dst;
ip4_and_gre_header_t *h4;
ip6_and_gre_header_t *h6;
gre_header_t *gre;
u32 ti;
u8 is_ipv6;
+ dst = dst_address;
ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
if (~0 == ti)
h4->ip4.protocol = IP_PROTOCOL_GRE;
/* fixup ip4 header length and checksum after-the-fact */
h4->ip4.src_address.as_u32 = t->tunnel_src.ip4.as_u32;
- h4->ip4.dst_address.as_u32 = t->tunnel_dst.fp_addr.ip4.as_u32;
+ h4->ip4.dst_address.as_u32 = dst->ip4.as_u32;
h4->ip4.checksum = ip4_header_checksum (&h4->ip4);
}
else
/* fixup ip6 header length and checksum after-the-fact */
h6->ip6.src_address.as_u64[0] = t->tunnel_src.ip6.as_u64[0];
h6->ip6.src_address.as_u64[1] = t->tunnel_src.ip6.as_u64[1];
- h6->ip6.dst_address.as_u64[0] = t->tunnel_dst.fp_addr.ip6.as_u64[0];
- h6->ip6.dst_address.as_u64[1] = t->tunnel_dst.fp_addr.ip6.as_u64[1];
+ h6->ip6.dst_address.as_u64[0] = dst->ip6.as_u64[0];
+ h6->ip6.dst_address.as_u64[1] = dst->ip6.as_u64[1];
}
if (PREDICT_FALSE (t->type == GRE_TUNNEL_TYPE_ERSPAN))
static void
gre4_fixup (vlib_main_t * vm,
- ip_adjacency_t * adj, vlib_buffer_t * b0, const void *data)
+ const ip_adjacency_t * adj, vlib_buffer_t * b0, const void *data)
{
ip4_header_t *ip0;
static void
gre6_fixup (vlib_main_t * vm,
- ip_adjacency_t * adj, vlib_buffer_t * b0, const void *data)
+ const ip_adjacency_t * adj, vlib_buffer_t * b0, const void *data)
{
ip6_header_t *ip0;
adj_nbr_midchain_update_rewrite
(ai, !is_ipv6 ? gre4_fixup : gre6_fixup, NULL, af,
- gre_build_rewrite (vnm, sw_if_index, adj_get_link_type (ai), NULL));
+ gre_build_rewrite (vnm, sw_if_index, adj_get_link_type (ai),
+ &t->tunnel_dst.fp_addr));
gre_tunnel_stack (ai);
}
+
+adj_walk_rc_t
+mgre_mk_complete_walk (adj_index_t ai, void *data)
+{
+ mgre_walk_ctx_t *ctx = data;
+ adj_midchain_fixup_t f;
+
+ f = (ctx->t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP4 ?
+ gre4_fixup : gre6_fixup);
+
+ adj_nbr_midchain_update_rewrite
+ (ai, f, NULL, ADJ_FLAG_MIDCHAIN_IP_STACK,
+ gre_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);
+}
+
+adj_walk_rc_t
+mgre_mk_incomplete_walk (adj_index_t ai, void *data)
+{
+ gre_tunnel_t *t = data;
+ adj_midchain_fixup_t f;
+
+ f = (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP4 ? gre4_fixup : gre6_fixup);
+
+ adj_nbr_midchain_update_rewrite (ai, f, NULL, ADJ_FLAG_NONE, NULL);
+
+ adj_midchain_delegate_unstack (ai);
+
+ return (ADJ_WALK_RC_CONTINUE);
+}
+
+void
+mgre_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
+{
+ gre_main_t *gm = &gre_main;
+ ip_adjacency_t *adj;
+ nhrp_entry_t *ne;
+ gre_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);
+
+ ne = nhrp_entry_find (sw_if_index, &adj->sub_type.nbr.next_hop);
+
+ if (NULL == ne)
+ // no NHRP entry to provide the next-hop
+ return;
+
+ mgre_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, mgre_mk_complete_walk, &ctx);
+}
#endif /* CLIB_MARCH_VARIANT */
typedef enum
.update_adjacency = gre_update_adj,
.flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
};
+
+VNET_HW_INTERFACE_CLASS (mgre_hw_interface_class) = {
+ .name = "mGRE",
+ .format_header = format_gre_header_with_length,
+ .unformat_header = unformat_gre_header,
+ .build_rewrite = gre_build_rewrite,
+ .update_adjacency = mgre_update_adj,
+ .flags = VNET_HW_INTERFACE_CLASS_FLAG_NBMA,
+};
/* *INDENT-ON* */
#endif /* CLIB_MARCH_VARIANT */