64 s =
format (s,
"GRE: tunnel %d len %d src %U dst %U",
81 s =
format (s,
"0x%04x", p);
91 u32 max_header_bytes = va_arg (*args,
u32);
93 u32 indent, header_bytes;
95 header_bytes =
sizeof (h[0]);
96 if (max_header_bytes != 0 && header_bytes > max_header_bytes)
97 return format (s,
"gre header truncated");
103 if (max_header_bytes != 0 && header_bytes > max_header_bytes)
111 max_header_bytes - header_bytes);
129 u16 *result = va_arg (*args,
u16 *);
149 u16 *result = va_arg (*args,
u16 *);
152 *result = clib_host_to_net_u16 ((
u16) * result);
159 u8 **result = va_arg (*args,
u8 **);
166 h->
protocol = clib_host_to_net_u16 (p);
171 u32 n_bytes =
sizeof (h[0]);
186 return (GRE_PROTOCOL_ip4);
188 return (GRE_PROTOCOL_ip6);
190 return (GRE_PROTOCOL_mpls_unicast);
192 return (GRE_PROTOCOL_teb);
194 return (GRE_PROTOCOL_arp);
200 return (GRE_PROTOCOL_ip4);
209 ip4_and_gre_header_t *h4;
210 ip6_and_gre_header_t *h6;
229 h4 = (ip4_and_gre_header_t *) rewrite;
233 h4->ip4.ip_version_and_header_length = 0x45;
235 h4->ip4.protocol = IP_PROTOCOL_GRE;
237 h4->ip4.src_address.as_u32 = t->
tunnel_src.ip4.as_u32;
244 h6 = (ip6_and_gre_header_t *) rewrite;
248 h6->ip6.ip_version_traffic_class_and_flow_label =
249 clib_host_to_net_u32 (6 << 28);
250 h6->ip6.hop_limit = 255;
251 h6->ip6.protocol = IP_PROTOCOL_GRE;
253 h6->ip6.src_address.as_u64[0] = t->
tunnel_src.ip6.as_u64[0];
254 h6->ip6.src_address.as_u64[1] = t->
tunnel_src.ip6.as_u64[1];
262 #define is_v4_packet(_h) ((*(u8*) _h) & 0xF0) == 0x40 325 u32 *from, *to_next, n_left_from, n_left_to_next;
339 while (n_left_from > 0)
348 while (n_left_from > 0 && n_left_to_next > 0)
369 tr->
src = gt->tunnel_src;
370 tr->
dst = gt->tunnel_src;
375 to_next, n_left_to_next,
406 u32 dev_instance = va_arg (*args,
u32);
407 return format (s,
"gre%d", dev_instance);
413 u32 dev_instance = va_arg (*args,
u32);
414 return format (s,
"teb-gre%d", dev_instance);
420 u32 dev_instance = va_arg (*args,
u32);
423 s =
format (s,
"GRE tunnel: id %d\n", dev_instance);
429 .name =
"GRE tunnel device",
447 .name =
"GRE TEB tunnel device",
483 pi->
name = protocol_name;
499 memset (gm, 0,
sizeof (gm[0]));
524 #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
vlib_node_registration_t gre4_input_node
(constructor) VLIB_REGISTER_NODE (gre4_input_node)
static uword gre_interface_tx(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
#define hash_set(h, key, value)
uword * tunnel_by_key6
Hash mapping ipv6 src/dst addr pair to tunnel.
void gre4_fixup(vlib_main_t *vm, ip_adjacency_t *adj, vlib_buffer_t *b0)
sll srl srl sll sra u16x4 i
Key for a IPv6 GRE Tunnel We use a different type so that the V4 key hash is as small as possible...
u8 runtime_data[0]
Function dependent node-runtime data.
uword * protocol_info_by_protocol
vnet_main_t * vnet_get_main(void)
#define VNET_HW_INTERFACE_CLASS(x,...)
static u8 * format_gre_tunnel_teb_name(u8 *s, va_list *args)
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.
char * name
Name (a c string).
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)
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)
void adj_nbr_midchain_update_rewrite(adj_index_t adj_index, adj_midchain_fixup_t fixup, adj_flags_t flags, u8 *rewrite)
adj_nbr_midchain_update_rewrite
unformat_function_t * unformat_pg_edit
ip4_and_gre_header_t ip4_and_gre
#define VLIB_INIT_FUNCTION(x)
IPv4 and GRE header union.
void gre_tunnel_stack(adj_index_t ai)
gre_tunnel_stack
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
ip6_and_gre_header_t ip6_and_gre
static uword gre_interface_tx_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
TX function.
#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)
#define hash_create_mem(elts, key_bytes, value_bytes)
uword * tunnel_by_key4
Hash mapping ipv4 src/dst addr pair to tunnel.
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
A representation of a GRE tunnel.
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)
vnet_device_class_t gre_device_teb_class
format_function_t * format_buffer
#define vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, bi0, next0)
Finish enqueueing one buffer forward in the graph.
#define vlib_get_next_frame(vm, node, next_index, vectors, n_vectors_left)
Get pointer to next frame vector data by (vlib_node_runtime_t, next_index).
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)
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.
gre_main_t * gre_get_main(vlib_main_t *vm)
clib_error_t * ip_main_init(vlib_main_t *vm)
static u8 * format_gre_device(u8 *s, va_list *args)
void gre6_fixup(vlib_main_t *vm, ip_adjacency_t *adj, vlib_buffer_t *b0)
#define VLIB_BUFFER_IS_TRACED
#define clib_memcpy(a, b, c)
Packets TX through the midchain do not increment the interface counters.
u32 adj_index_t
An index for adjacencies.
void vlib_put_next_frame(vlib_main_t *vm, vlib_node_runtime_t *r, u32 next_index, u32 n_vectors_left)
Release pointer to next frame vector data.
u8 * format_gre_header_with_length(u8 *s, va_list *args)
u8 * format_gre_tx_trace(u8 *s, va_list *args)
#define hash_create(elts, value_bytes)
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
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
clib_error_t * ip4_lookup_init(vlib_main_t *vm)
vnet_hw_interface_class_t gre_hw_interface_class
static void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
vnet_device_class_t gre_device_class
VLIB_DEVICE_TX_FUNCTION_MULTIARCH(gre_device_class, gre_interface_tx)
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)
uword unformat_gre_protocol_host_byte_order(unformat_input_t *input, va_list *args)
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)
vlib_node_registration_t gre6_input_node
(constructor) VLIB_REGISTER_NODE (gre6_input_node)
fib_prefix_t tunnel_dst
The tunnel's destination/remote address.
static vlib_node_t * vlib_get_node(vlib_main_t *vm, u32 i)
Get vlib node by index.
static uword gre_teb_interface_tx(vlib_main_t *vm, vlib_node_runtime_t *node, 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 clib_error_t * ip6_lookup_init(vlib_main_t *vm)
uword unformat_gre_protocol_net_byte_order(unformat_input_t *input, va_list *args)
u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index, VLIB_BUFFER_IS_TRACED: trace this buffer.
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
static u16 ip4_header_checksum(ip4_header_t *i)