diff options
Diffstat (limited to 'src/vnet/gre/gre.c')
| -rw-r--r-- | src/vnet/gre/gre.c | 61 |
1 files changed, 57 insertions, 4 deletions
diff --git a/src/vnet/gre/gre.c b/src/vnet/gre/gre.c index 4f16b5db387..f06f19fab2a 100644 --- a/src/vnet/gre/gre.c +++ b/src/vnet/gre/gre.c @@ -18,6 +18,7 @@ #include <vnet/vnet.h> #include <vnet/gre/gre.h> #include <vnet/adj/adj_midchain.h> +#include <vnet/nhrp/nhrp.h> extern gre_main_t gre_main; @@ -213,6 +214,7 @@ gre_build_rewrite (vnet_main_t * vnm, 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; @@ -221,6 +223,7 @@ gre_build_rewrite (vnet_main_t * vnm, u32 ti; u8 is_ipv6; + dst = dst_address; ti = gm->tunnel_index_by_sw_if_index[sw_if_index]; if (~0 == ti) @@ -241,7 +244,7 @@ gre_build_rewrite (vnet_main_t * vnm, 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 @@ -256,8 +259,8 @@ gre_build_rewrite (vnet_main_t * vnm, /* 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)) @@ -322,10 +325,51 @@ gre_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai) 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); } + +static adj_walk_rc_t +mgre_mk_complete_walk (adj_index_t ai, void *ctx) +{ + nhrp_entry_adj_stack (ctx, 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; + adj_flags_t af; + u8 is_ipv6; + 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); + is_ipv6 = t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6 ? 1 : 0; + af = ADJ_FLAG_MIDCHAIN_IP_STACK; + + 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), + &adj->sub_type.nbr.next_hop)); + + 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; + + adj_nbr_walk_nh (sw_if_index, t->tunnel_dst.fp_proto, + &adj->sub_type.nbr.next_hop, mgre_mk_complete_walk, ne); +} #endif /* CLIB_MARCH_VARIANT */ typedef enum @@ -574,6 +618,15 @@ VNET_HW_INTERFACE_CLASS (gre_hw_interface_class) = { .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 */ |