25 #ifndef CLIB_MARCH_VARIANT 64 #ifndef CLIB_MARCH_VARIANT 72 s =
format (s,
"GRE: tunnel %d len %d src %U dst %U",
89 s =
format (s,
"0x%04x", p);
99 u32 max_header_bytes = va_arg (*args,
u32);
101 u32 indent, header_bytes;
103 header_bytes =
sizeof (h[0]);
104 if (max_header_bytes != 0 && header_bytes > max_header_bytes)
105 return format (s,
"gre header truncated");
111 if (max_header_bytes != 0 && header_bytes < max_header_bytes)
119 max_header_bytes - header_bytes);
137 u16 *result = va_arg (*args,
u16 *);
157 u16 *result = va_arg (*args,
u16 *);
160 *result = clib_host_to_net_u16 ((
u16) * result);
167 u8 **result = va_arg (*args,
u8 **);
174 h->
protocol = clib_host_to_net_u16 (p);
179 u32 n_bytes =
sizeof (h[0]);
194 return (GRE_PROTOCOL_ip4);
196 return (GRE_PROTOCOL_ip6);
198 return (GRE_PROTOCOL_mpls_unicast);
200 return (GRE_PROTOCOL_teb);
202 return (GRE_PROTOCOL_arp);
208 return (GRE_PROTOCOL_ip4);
217 const ip46_address_t *
dst;
218 ip4_and_gre_header_t *h4;
219 ip6_and_gre_header_t *h6;
240 h4 = (ip4_and_gre_header_t *) rewrite;
242 h4->ip4.ip_version_and_header_length = 0x45;
246 h4->ip4.src_address.as_u32 = t->
tunnel_src.ip4.as_u32;
247 h4->ip4.dst_address.as_u32 = dst->ip4.as_u32;
253 h6 = (ip6_and_gre_header_t *) rewrite;
255 h6->ip6.ip_version_traffic_class_and_flow_label =
256 clib_host_to_net_u32 (6 << 28);
257 h6->ip6.hop_limit = 255;
258 h6->ip6.protocol = IP_PROTOCOL_GRE;
260 h6->ip6.src_address.as_u64[0] = t->
tunnel_src.ip6.as_u64[0];
261 h6->ip6.src_address.as_u64[1] = t->
tunnel_src.ip6.as_u64[1];
262 h6->ip6.dst_address.as_u64[0] = dst->ip6.as_u64[0];
263 h6->ip6.dst_address.as_u64[1] = dst->ip6.as_u64[1];
268 gre->
protocol = clib_host_to_net_u16 (GRE_PROTOCOL_erspan);
278 #define is_v4_packet(_h) ((*(u8*) _h) & 0xF0) == 0x40 389 u32 *from, n_left_from;
396 n_left_from =
frame->n_vectors;
399 while (n_left_from >= 2)
412 (sw_if_index[1] !=
vnet_buffer (b[1])->sw_if_index[VLIB_TX]))
434 h0->seq_num = clib_host_to_net_u32 (seq_num);
436 h0->t2.cos_en_t_session |= clib_host_to_net_u16 (gt[0]->
session_id);
448 h0->seq_num = clib_host_to_net_u32 (seq_num);
450 h0->t2.cos_en_t_session |= clib_host_to_net_u16 (gt[1]->
session_id);
476 while (n_left_from >= 1)
501 h0->seq_num = clib_host_to_net_u32 (seq_num);
503 h0->t2.cos_en_t_session |= clib_host_to_net_u16 (gt[0]->
session_id);
525 GRE_ERROR_PKTS_ENCAP,
frame->n_vectors);
527 return frame->n_vectors;
531 #define gre_error(n,s) s, 540 .vector_size =
sizeof (
u32),
552 #ifndef CLIB_MARCH_VARIANT 556 u32 dev_instance = va_arg (*args,
u32);
561 return format (s,
"<improperly-referenced>");
570 u32 dev_instance = va_arg (*args,
u32);
573 s =
format (s,
"GRE tunnel: id %d\n", dev_instance);
579 ip46_address_t *
src, ip46_address_t *
dst,
u8 * is_l2)
595 *is_l2 = t->
type == GRE_TUNNEL_TYPE_TEB;
602 .name =
"GRE tunnel device",
642 pi->
name = protocol_name;
685 #define _(n,s) add_protocol (gm, GRE_PROTOCOL_##s, #s);
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
fib_protocol_t fp_proto
protocol type
uword * seq_num_by_key
Hash mapping tunnel src/dst addr and fib-idx to sequence number.
VNET_HW_INTERFACE_CLASS(gre_hw_interface_class)
void adj_nbr_walk_nh(u32 sw_if_index, fib_protocol_t adj_nh_proto, const ip46_address_t *nh, adj_walk_cb_t cb, void *ctx)
Walk adjacencies on a link with a given next-hop.
#define hash_set(h, key, value)
uword * tunnel_by_key6
Hash mapping to tunnels with ipv6 src/dst addr.
static adj_walk_rc_t mgre_mk_complete_walk(adj_index_t ai, void *ctx)
Key for a IPv6 GRE Tunnel We use a different type so that the V4 key hash is as small as possible...
uword * protocol_info_by_protocol
vnet_main_t * vnet_get_main(void)
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
static clib_error_t * ip4_lookup_init(vlib_main_t *vm)
vnet_link_t adj_get_link_type(adj_index_t ai)
Return the link type of the adjacency.
gre_protocol_t protocol
GRE protocol type in host byte order.
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
char * name
Name (a c string).
a non-broadcast multiple access interface
A GRE payload protocol registration.
#define vec_add2(V, P, N)
Add N elements to end of vector V, return pointer to new elements in P.
#define hash_set_mem(h, key, value)
#define VLIB_NODE_FN(node)
static uword vlib_buffer_length_in_chain(vlib_main_t *vm, vlib_buffer_t *b)
Get length in bytes of the buffer chain.
u32 * tunnel_index_by_sw_if_index
Mapping from sw_if_index to tunnel index.
VNET_DEVICE_CLASS(gre_device_class)
#define clib_memcpy(d, s, n)
vnet_hw_interface_class_t mgre_hw_interface_class
Hash key for GRE header seq number generation for ERSPAN encap.
vl_api_ip_proto_t protocol
static ip_adjacency_t * adj_get(adj_index_t adj_index)
Get a pointer to an adjacency object from its index.
unformat_function_t * unformat_pg_edit
ip4_and_gre_header_t ip4_and_gre
vl_api_interface_index_t sw_if_index
static void gre4_fixup(vlib_main_t *vm, const ip_adjacency_t *adj, vlib_buffer_t *b0, const void *data)
#define VLIB_INIT_FUNCTION(x)
void gre_tunnel_stack(adj_index_t ai)
gre_tunnel_stack
enum adj_walk_rc_t_ adj_walk_rc_t
return codes from a adjacency walker callback function
struct ip_adjacency_t_::@119::@120 nbr
IP_LOOKUP_NEXT_ARP/IP_LOOKUP_NEXT_REWRITE.
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
static_always_inline void vlib_buffer_enqueue_to_single_next(vlib_main_t *vm, vlib_node_runtime_t *node, u32 *buffers, u16 next_index, u32 count)
ip6_and_gre_header_t ip6_and_gre
union ip_adjacency_t_::@119 sub_type
adj_index_t l2_adj_index
an L2 tunnel always rquires an L2 midchain.
#define vlib_call_init_function(vm, x)
ip46_address_t tunnel_src
The tunnel's source/local address.
uword unformat_gre_header(unformat_input_t *input, va_list *args)
#define hash_create_string(elts, value_bytes)
vl_api_fib_path_type_t type
#define hash_create_mem(elts, key_bytes, value_bytes)
uword * tunnel_by_key4
Hash mapping to tunnels with ipv4 src/dst addr.
#define ADJ_INDEX_INVALID
Invalid ADJ index - used when no adj is known likewise blazoned capitals INVALID speak volumes where ...
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
A representation of a GRE tunnel.
vlib_node_registration_t gre_encap_node
(constructor) VLIB_REGISTER_NODE (gre_encap_node)
static ip_protocol_info_t * ip_get_protocol_info(ip_main_t *im, u32 protocol)
ip46_address_t fp_addr
The address type is not deriveable from the fp_addr member.
format_function_t * format_header
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
u32 node_index
Node which handles this type.
void gre_update_adj(vnet_main_t *vnm, u32 sw_if_index, adj_index_t ai)
u8 * format_gre_tx_trace(u8 *s, va_list *args)
format_function_t * format_buffer
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
uword * protocol_info_by_name
Hash tables mapping name/protocol to protocol info index.
static u8 * format_gre_tunnel_name(u8 *s, va_list *args)
format_function_t format_ip46_address
static clib_error_t * gre_input_init(vlib_main_t *vm)
static clib_error_t * gre_init(vlib_main_t *vm)
Key for a IPv4 GRE Tunnel.
#define VLIB_REGISTER_NODE(x,...)
clib_error_t * ip_main_init(vlib_main_t *vm)
static u8 * format_gre_device(u8 *s, va_list *args)
static int gre_tunnel_desc(u32 sw_if_index, ip46_address_t *src, ip46_address_t *dst, u8 *is_l2)
void adj_nbr_midchain_update_rewrite(adj_index_t adj_index, adj_midchain_fixup_t fixup, const void *fixup_data, adj_flags_t flags, u8 *rewrite)
adj_nbr_midchain_update_rewrite
u32 adj_index_t
An index for adjacencies.
u8 * format_gre_header_with_length(u8 *s, va_list *args)
vlib_main_t vlib_node_runtime_t * node
#define hash_create(elts, value_bytes)
static u8 * gre_build_rewrite(vnet_main_t *vnm, u32 sw_if_index, vnet_link_t link_type, const void *dst_address)
u32 next_index
Next index for this type.
enum vnet_link_t_ vnet_link_t
Link Type: A description of the protocol of packets on the link.
static int gre_proto_from_vnet_link(vnet_link_t link)
gre_tunnel_t * tunnels
pool of tunnel instances
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
vnet_hw_interface_class_t gre_hw_interface_class
#define clib_atomic_fetch_add(a, b)
enum adj_flags_t_ adj_flags_t
Flags on an IP adjacency.
static void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
void mgre_update_adj(vnet_main_t *vnm, u32 sw_if_index, adj_index_t ai)
vnet_device_class_t gre_device_class
clib_error_t * gre_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
static void add_protocol(gre_main_t *gm, gre_protocol_t protocol, char *protocol_name)
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
uword unformat_gre_protocol_host_byte_order(unformat_input_t *input, va_list *args)
#define GRE_FLAGS_SEQUENCE
VLIB buffer representation.
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
a point 2 point interface
u8 * format_gre_header(u8 *s, va_list *args)
unformat_function_t unformat_pg_gre_header
u8 * format_gre_protocol(u8 *s, va_list *args)
fib_prefix_t tunnel_dst
The tunnel's destination/remote address.
nhrp_entry_t * nhrp_entry_find(u32 sw_if_index, const ip46_address_t *peer)
static vlib_node_t * vlib_get_node(vlib_main_t *vm, u32 i)
Get vlib node by index.
void nhrp_entry_adj_stack(const nhrp_entry_t *ne, adj_index_t ai)
vlib_main_t vlib_node_runtime_t vlib_frame_t * frame
static gre_protocol_info_t * gre_get_protocol_info(gre_main_t *em, gre_protocol_t protocol)
gre_protocol_info_t * protocol_infos
GRE payload protocol registrations.
static void gre6_fixup(vlib_main_t *vm, const ip_adjacency_t *adj, vlib_buffer_t *b0, const void *data)
static_always_inline void vlib_get_buffers(vlib_main_t *vm, u32 *bi, vlib_buffer_t **b, int count)
Translate array of buffer indices into buffer pointers.
static clib_error_t * ip6_lookup_init(vlib_main_t *vm)
uword unformat_gre_protocol_net_byte_order(unformat_input_t *input, va_list *args)
static char * gre_error_strings[]
static u16 ip4_header_checksum(ip4_header_t *i)