_(IP6_INPUT, "ip6-input") \
_(MPLS_INPUT, "mpls-input")
-typedef enum {
+typedef enum
+{
#define _(s,n) GRE_INPUT_NEXT_##s,
foreach_gre_input_next
#undef _
- GRE_INPUT_N_NEXT,
+ GRE_INPUT_N_NEXT,
} gre_input_next_t;
-typedef struct {
+typedef struct
+{
u32 tunnel_id;
u32 length;
- ip4_address_t src;
- ip4_address_t dst;
+ ip46_address_t src;
+ ip46_address_t dst;
} gre_rx_trace_t;
-u8 * format_gre_rx_trace (u8 * s, va_list * args)
+extern u8 *format_gre_rx_trace (u8 * s, va_list * args);
+
+#ifndef CLIB_MARCH_VARIANT
+u8 *
+format_gre_rx_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- gre_rx_trace_t * t = va_arg (*args, gre_rx_trace_t *);
-
+ gre_rx_trace_t *t = va_arg (*args, gre_rx_trace_t *);
+
s = format (s, "GRE: tunnel %d len %d src %U dst %U",
- t->tunnel_id, clib_net_to_host_u16(t->length),
- format_ip4_address, &t->src.as_u8,
- format_ip4_address, &t->dst.as_u8);
+ t->tunnel_id, clib_net_to_host_u16 (t->length),
+ format_ip46_address, &t->src, IP46_TYPE_ANY,
+ format_ip46_address, &t->dst, IP46_TYPE_ANY);
return s;
}
+#endif /* CLIB_MARCH_VARIANT */
-typedef struct {
+typedef struct
+{
/* Sparse vector mapping gre protocol in network byte order
to next index. */
- u16 * next_by_protocol;
+ u16 *next_by_protocol;
} gre_input_runtime_t;
-static uword
+always_inline void
+gre_trace (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_buffer_t * b,
+ u32 tun_sw_if_index, const ip6_header_t * ip6,
+ const ip4_header_t * ip4, int is_ipv6)
+{
+ gre_rx_trace_t *tr = vlib_add_trace (vm, node,
+ b, sizeof (*tr));
+ tr->tunnel_id = tun_sw_if_index;
+ if (is_ipv6)
+ {
+ tr->length = ip6->payload_length;
+ tr->src.ip6.as_u64[0] = ip6->src_address.as_u64[0];
+ tr->src.ip6.as_u64[1] = ip6->src_address.as_u64[1];
+ tr->dst.ip6.as_u64[0] = ip6->dst_address.as_u64[0];
+ tr->dst.ip6.as_u64[1] = ip6->dst_address.as_u64[1];
+ }
+ else
+ {
+ tr->length = ip4->length;
+ tr->src.as_u64[0] = tr->src.as_u64[1] = 0;
+ tr->dst.as_u64[0] = tr->dst.as_u64[1] = 0;
+ tr->src.ip4.as_u32 = ip4->src_address.as_u32;
+ tr->dst.ip4.as_u32 = ip4->dst_address.as_u32;
+ }
+}
+
+always_inline void
+gre_tunnel_get (const gre_main_t * gm, vlib_node_runtime_t * node,
+ vlib_buffer_t * b, u16 * next, const gre_tunnel_key_t * key,
+ gre_tunnel_key_t * cached_key, u32 * tun_sw_if_index,
+ u32 * cached_tun_sw_if_index, int is_ipv6)
+{
+ const uword *p;
+ p = is_ipv6 ? hash_get_mem (gm->tunnel_by_key6, &key->gtk_v6)
+ : hash_get_mem (gm->tunnel_by_key4, &key->gtk_v4);
+ if (PREDICT_FALSE (!p))
+ {
+ *next = GRE_INPUT_NEXT_DROP;
+ b->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL];
+ *tun_sw_if_index = ~0;
+ }
+ else
+ {
+ const gre_tunnel_t *tun;
+ tun = pool_elt_at_index (gm->tunnels, *p);
+ *cached_tun_sw_if_index = *tun_sw_if_index = tun->sw_if_index;
+ if (is_ipv6)
+ cached_key->gtk_v6 = key->gtk_v6;
+ else
+ cached_key->gtk_v4 = key->gtk_v4;
+ }
+}
+
+always_inline uword
gre_input (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
+ vlib_node_runtime_t * node, vlib_frame_t * frame,
+ const int is_ipv6)
{
- gre_main_t * gm = &gre_main;
- gre_input_runtime_t * rt = (void *) node->runtime_data;
- __attribute__((unused)) u32 n_left_from, next_index, * from, * to_next;
- u64 cached_tunnel_key = (u64) ~0;
- u32 cached_tunnel_sw_if_index = 0, tunnel_sw_if_index = 0;
+ gre_main_t *gm = &gre_main;
+ u32 *from, n_left_from;
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
+ u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
+ u16 cached_protocol = ~0;
+ u32 cached_next_index = SPARSE_VEC_INVALID_INDEX;
+ u32 cached_tun_sw_if_index = ~0;
+ gre_tunnel_key_t cached_key;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ vlib_get_buffers (vm, from, bufs, n_left_from);
+
+ if (is_ipv6)
+ clib_memset (&cached_key.gtk_v6, 0xff, sizeof (cached_key.gtk_v6));
+ else
+ clib_memset (&cached_key.gtk_v4, 0xff, sizeof (cached_key.gtk_v4));
+
+ while (n_left_from >= 2)
+ {
+ const ip6_header_t *ip6[2];
+ const ip4_header_t *ip4[2];
+ const gre_header_t *gre[2];
+ u32 nidx[2];
+ next_info_t ni[2];
+ u8 type[2];
+ u16 version[2];
+ u32 len[2];
+ gre_tunnel_key_t key[2];
+ u8 matched[2];
+ u32 tun_sw_if_index[2];
+
+ if (PREDICT_TRUE (n_left_from >= 6))
+ {
+ vlib_prefetch_buffer_data (b[2], LOAD);
+ vlib_prefetch_buffer_data (b[3], LOAD);
+ vlib_prefetch_buffer_header (b[4], STORE);
+ vlib_prefetch_buffer_header (b[5], STORE);
+ }
- u32 cpu_index = os_get_cpu_number();
- u32 len;
- vnet_interface_main_t *im = &gm->vnet_main->interface_main;
+ if (is_ipv6)
+ {
+ /* ip6_local hands us the ip header, not the gre header */
+ ip6[0] = vlib_buffer_get_current (b[0]);
+ ip6[1] = vlib_buffer_get_current (b[1]);
+ gre[0] = (void *) (ip6[0] + 1);
+ gre[1] = (void *) (ip6[1] + 1);
+ vlib_buffer_advance (b[0], sizeof (*ip6[0]) + sizeof (*gre[0]));
+ vlib_buffer_advance (b[1], sizeof (*ip6[0]) + sizeof (*gre[0]));
+ }
+ else
+ {
+ /* ip4_local hands us the ip header, not the gre header */
+ ip4[0] = vlib_buffer_get_current (b[0]);
+ ip4[1] = vlib_buffer_get_current (b[1]);
+ gre[0] = (void *) (ip4[0] + 1);
+ gre[1] = (void *) (ip4[1] + 1);
+ vlib_buffer_advance (b[0], sizeof (*ip4[0]) + sizeof (*gre[0]));
+ vlib_buffer_advance (b[1], sizeof (*ip4[0]) + sizeof (*gre[0]));
+ }
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
+ if (PREDICT_TRUE (cached_protocol == gre[0]->protocol))
+ {
+ nidx[0] = cached_next_index;
+ }
+ else
+ {
+ cached_next_index = nidx[0] =
+ sparse_vec_index (gm->next_by_protocol, gre[0]->protocol);
+ cached_protocol = gre[0]->protocol;
+ }
+ if (PREDICT_TRUE (cached_protocol == gre[1]->protocol))
+ {
+ nidx[1] = cached_next_index;
+ }
+ else
+ {
+ cached_next_index = nidx[1] =
+ sparse_vec_index (gm->next_by_protocol, gre[1]->protocol);
+ cached_protocol = gre[1]->protocol;
+ }
- next_index = node->cached_next_index;
+ ni[0] = vec_elt (gm->next_by_protocol, nidx[0]);
+ ni[1] = vec_elt (gm->next_by_protocol, nidx[1]);
+ next[0] = ni[0].next_index;
+ next[1] = ni[1].next_index;
+ type[0] = ni[0].tunnel_type;
+ type[1] = ni[1].tunnel_type;
+
+ b[0]->error = nidx[0] == SPARSE_VEC_INVALID_INDEX
+ ? node->errors[GRE_ERROR_UNKNOWN_PROTOCOL]
+ : node->errors[GRE_ERROR_NONE];
+ b[1]->error = nidx[1] == SPARSE_VEC_INVALID_INDEX
+ ? node->errors[GRE_ERROR_UNKNOWN_PROTOCOL]
+ : node->errors[GRE_ERROR_NONE];
+
+ version[0] = clib_net_to_host_u16 (gre[0]->flags_and_version);
+ version[1] = clib_net_to_host_u16 (gre[1]->flags_and_version);
+ version[0] &= GRE_VERSION_MASK;
+ version[1] &= GRE_VERSION_MASK;
+
+ b[0]->error = version[0]
+ ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] : b[0]->error;
+ next[0] = version[0] ? GRE_INPUT_NEXT_DROP : next[0];
+ b[1]->error = version[1]
+ ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] : b[1]->error;
+ next[1] = version[1] ? GRE_INPUT_NEXT_DROP : next[1];
+
+ len[0] = vlib_buffer_length_in_chain (vm, b[0]);
+ len[1] = vlib_buffer_length_in_chain (vm, b[1]);
+
+ /* always search for P2P types in the DP */
+ if (is_ipv6)
+ {
+ gre_mk_key6 (&ip6[0]->dst_address,
+ &ip6[0]->src_address,
+ vnet_buffer (b[0])->ip.fib_index,
+ type[0], TUNNEL_MODE_P2P, 0, &key[0].gtk_v6);
+ gre_mk_key6 (&ip6[1]->dst_address,
+ &ip6[1]->src_address,
+ vnet_buffer (b[1])->ip.fib_index,
+ type[1], TUNNEL_MODE_P2P, 0, &key[1].gtk_v6);
+ matched[0] = gre_match_key6 (&cached_key.gtk_v6, &key[0].gtk_v6);
+ matched[1] = gre_match_key6 (&cached_key.gtk_v6, &key[1].gtk_v6);
+ }
+ else
+ {
+ gre_mk_key4 (ip4[0]->dst_address,
+ ip4[0]->src_address,
+ vnet_buffer (b[0])->ip.fib_index,
+ type[0], TUNNEL_MODE_P2P, 0, &key[0].gtk_v4);
+ gre_mk_key4 (ip4[1]->dst_address,
+ ip4[1]->src_address,
+ vnet_buffer (b[1])->ip.fib_index,
+ type[1], TUNNEL_MODE_P2P, 0, &key[1].gtk_v4);
+ matched[0] = gre_match_key4 (&cached_key.gtk_v4, &key[0].gtk_v4);
+ matched[1] = gre_match_key4 (&cached_key.gtk_v4, &key[1].gtk_v4);
+ }
- while (n_left_from > 0)
+ tun_sw_if_index[0] = cached_tun_sw_if_index;
+ tun_sw_if_index[1] = cached_tun_sw_if_index;
+ if (PREDICT_FALSE (!matched[0]))
+ gre_tunnel_get (gm, node, b[0], &next[0], &key[0], &cached_key,
+ &tun_sw_if_index[0], &cached_tun_sw_if_index,
+ is_ipv6);
+ if (PREDICT_FALSE (!matched[1]))
+ gre_tunnel_get (gm, node, b[1], &next[1], &key[1], &cached_key,
+ &tun_sw_if_index[1], &cached_tun_sw_if_index,
+ is_ipv6);
+
+ if (PREDICT_TRUE (next[0] > GRE_INPUT_NEXT_DROP))
+ {
+ vlib_increment_combined_counter (&gm->vnet_main->
+ interface_main.combined_sw_if_counters
+ [VNET_INTERFACE_COUNTER_RX],
+ vm->thread_index,
+ tun_sw_if_index[0],
+ 1 /* packets */ ,
+ len[0] /* bytes */ );
+ vnet_buffer (b[0])->sw_if_index[VLIB_RX] = tun_sw_if_index[0];
+ }
+ if (PREDICT_TRUE (next[1] > GRE_INPUT_NEXT_DROP))
+ {
+ vlib_increment_combined_counter (&gm->vnet_main->
+ interface_main.combined_sw_if_counters
+ [VNET_INTERFACE_COUNTER_RX],
+ vm->thread_index,
+ tun_sw_if_index[1],
+ 1 /* packets */ ,
+ len[1] /* bytes */ );
+ vnet_buffer (b[1])->sw_if_index[VLIB_RX] = tun_sw_if_index[1];
+ }
+
+ if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
+ gre_trace (vm, node, b[0], tun_sw_if_index[0], ip6[0], ip4[0],
+ is_ipv6);
+ if (PREDICT_FALSE (b[1]->flags & VLIB_BUFFER_IS_TRACED))
+ gre_trace (vm, node, b[1], tun_sw_if_index[1], ip6[1], ip4[1],
+ is_ipv6);
+
+ b += 2;
+ next += 2;
+ n_left_from -= 2;
+ }
+
+ while (n_left_from >= 1)
{
- u32 n_left_to_next;
+ const ip6_header_t *ip6[1];
+ const ip4_header_t *ip4[1];
+ const gre_header_t *gre[1];
+ u32 nidx[1];
+ next_info_t ni[1];
+ u8 type[1];
+ u16 version[1];
+ u32 len[1];
+ gre_tunnel_key_t key[1];
+ u8 matched[1];
+ u32 tun_sw_if_index[1];
+
+ if (PREDICT_TRUE (n_left_from >= 3))
+ {
+ vlib_prefetch_buffer_data (b[1], LOAD);
+ vlib_prefetch_buffer_header (b[2], STORE);
+ }
- vlib_get_next_frame (vm, node, next_index,
- to_next, n_left_to_next);
+ if (is_ipv6)
+ {
+ /* ip6_local hands us the ip header, not the gre header */
+ ip6[0] = vlib_buffer_get_current (b[0]);
+ gre[0] = (void *) (ip6[0] + 1);
+ vlib_buffer_advance (b[0], sizeof (*ip6[0]) + sizeof (*gre[0]));
+ }
+ else
+ {
+ /* ip4_local hands us the ip header, not the gre header */
+ ip4[0] = vlib_buffer_get_current (b[0]);
+ gre[0] = (void *) (ip4[0] + 1);
+ vlib_buffer_advance (b[0], sizeof (*ip4[0]) + sizeof (*gre[0]));
+ }
- while (n_left_from >= 4 && n_left_to_next >= 2)
+ if (PREDICT_TRUE (cached_protocol == gre[0]->protocol))
{
- u32 bi0, bi1;
- vlib_buffer_t * b0, * b1;
- gre_header_t * h0, * h1;
- u16 version0, version1;
- int verr0, verr1;
- u32 i0, i1, next0, next1, protocol0, protocol1;
- ip4_header_t *ip0, *ip1;
-
- /* Prefetch next iteration. */
- {
- vlib_buffer_t * p2, * p3;
-
- p2 = vlib_get_buffer (vm, from[2]);
- p3 = vlib_get_buffer (vm, from[3]);
-
- vlib_prefetch_buffer_header (p2, LOAD);
- vlib_prefetch_buffer_header (p3, LOAD);
-
- CLIB_PREFETCH (p2->data, sizeof (h0[0]), LOAD);
- CLIB_PREFETCH (p3->data, sizeof (h1[0]), LOAD);
- }
-
- bi0 = from[0];
- bi1 = from[1];
- to_next[0] = bi0;
- to_next[1] = bi1;
- from += 2;
- to_next += 2;
- n_left_to_next -= 2;
- n_left_from -= 2;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- /* ip4_local hands us the ip header, not the gre header */
- ip0 = vlib_buffer_get_current (b0);
- ip1 = vlib_buffer_get_current (b1);
-
- /* Save src + dst ip4 address, e.g. for mpls-o-gre */
- vnet_buffer(b0)->gre.src = ip0->src_address.as_u32;
- vnet_buffer(b0)->gre.dst = ip0->dst_address.as_u32;
- vnet_buffer(b1)->gre.src = ip1->src_address.as_u32;
- vnet_buffer(b1)->gre.dst = ip1->dst_address.as_u32;
-
- vlib_buffer_advance (b0, sizeof (*ip0));
- vlib_buffer_advance (b1, sizeof (*ip1));
-
- h0 = vlib_buffer_get_current (b0);
- h1 = vlib_buffer_get_current (b1);
-
- /* Index sparse array with network byte order. */
- protocol0 = h0->protocol;
- protocol1 = h1->protocol;
- sparse_vec_index2 (rt->next_by_protocol, protocol0, protocol1,
- &i0, &i1);
- next0 = vec_elt(rt->next_by_protocol, i0);
- next1 = vec_elt(rt->next_by_protocol, i1);
-
- b0->error = node->errors[i0 == SPARSE_VEC_INVALID_INDEX ? GRE_ERROR_UNKNOWN_PROTOCOL : GRE_ERROR_NONE];
- b1->error = node->errors[i1 == SPARSE_VEC_INVALID_INDEX ? GRE_ERROR_UNKNOWN_PROTOCOL : GRE_ERROR_NONE];
-
- version0 = clib_net_to_host_u16 (h0->flags_and_version);
- verr0 = version0 & GRE_VERSION_MASK;
- version1 = clib_net_to_host_u16 (h1->flags_and_version);
- verr1 = version1 & GRE_VERSION_MASK;
-
- b0->error = verr0 ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION]
- : b0->error;
- next0 = verr0 ? GRE_INPUT_NEXT_DROP : next0;
- b1->error = verr1 ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION]
- : b1->error;
- next1 = verr1 ? GRE_INPUT_NEXT_DROP : next1;
-
-
- /* RPF check for ip4/ip6 input */
- if (PREDICT_TRUE(next0 == GRE_INPUT_NEXT_IP4_INPUT
- || next0 == GRE_INPUT_NEXT_IP6_INPUT
- || next0 == GRE_INPUT_NEXT_ETHERNET_INPUT
- || next0 == GRE_INPUT_NEXT_MPLS_INPUT))
- {
- u64 key = ((u64)(vnet_buffer(b0)->gre.dst) << 32) |
- (u64)(vnet_buffer(b0)->gre.src);
-
- if (cached_tunnel_key != key)
- {
- vnet_hw_interface_t * hi;
- gre_tunnel_t * t;
- uword * p;
-
- p = hash_get (gm->tunnel_by_key, key);
- if (!p)
- {
- next0 = GRE_INPUT_NEXT_DROP;
- b0->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL];
- goto drop0;
- }
- t = pool_elt_at_index (gm->tunnels, p[0]);
- hi = vnet_get_hw_interface (gm->vnet_main,
- t->hw_if_index);
- tunnel_sw_if_index = hi->sw_if_index;
-
- cached_tunnel_sw_if_index = tunnel_sw_if_index;
- }
- else
- {
- tunnel_sw_if_index = cached_tunnel_sw_if_index;
- }
- }
- else
- {
- next0 = GRE_INPUT_NEXT_DROP;
- goto drop0;
- }
- len = vlib_buffer_length_in_chain (vm, b0);
- vlib_increment_combined_counter (im->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_RX,
- cpu_index,
- tunnel_sw_if_index,
- 1 /* packets */,
- len /* bytes */);
-
- vnet_buffer(b0)->sw_if_index[VLIB_RX] = tunnel_sw_if_index;
-
-drop0:
- if (PREDICT_TRUE(next1 == GRE_INPUT_NEXT_IP4_INPUT
- || next1 == GRE_INPUT_NEXT_IP6_INPUT
- || next1 == GRE_INPUT_NEXT_ETHERNET_INPUT
- || next1 == GRE_INPUT_NEXT_MPLS_INPUT))
- {
- u64 key = ((u64)(vnet_buffer(b1)->gre.dst) << 32) |
- (u64)(vnet_buffer(b1)->gre.src);
-
- if (cached_tunnel_key != key)
- {
- vnet_hw_interface_t * hi;
- gre_tunnel_t * t;
- uword * p;
-
- p = hash_get (gm->tunnel_by_key, key);
- if (!p)
- {
- next1 = GRE_INPUT_NEXT_DROP;
- b1->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL];
- goto drop1;
- }
- t = pool_elt_at_index (gm->tunnels, p[0]);
- hi = vnet_get_hw_interface (gm->vnet_main,
- t->hw_if_index);
- tunnel_sw_if_index = hi->sw_if_index;
-
- cached_tunnel_sw_if_index = tunnel_sw_if_index;
- }
- else
- {
- tunnel_sw_if_index = cached_tunnel_sw_if_index;
- }
- }
- else
- {
- next1 = GRE_INPUT_NEXT_DROP;
- goto drop1;
- }
- len = vlib_buffer_length_in_chain (vm, b1);
- vlib_increment_combined_counter (im->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_RX,
- cpu_index,
- tunnel_sw_if_index,
- 1 /* packets */,
- len /* bytes */);
-
- vnet_buffer(b1)->sw_if_index[VLIB_RX] = tunnel_sw_if_index;
-
-drop1:
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- gre_rx_trace_t *tr = vlib_add_trace (vm, node,
- b0, sizeof (*tr));
- tr->tunnel_id = tunnel_sw_if_index;
- tr->length = ip0->length;
- tr->src.as_u32 = ip0->src_address.as_u32;
- tr->dst.as_u32 = ip0->dst_address.as_u32;
- }
-
- if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
- {
- gre_rx_trace_t *tr = vlib_add_trace (vm, node,
- b1, sizeof (*tr));
- tr->tunnel_id = tunnel_sw_if_index;
- tr->length = ip1->length;
- tr->src.as_u32 = ip1->src_address.as_u32;
- tr->dst.as_u32 = ip1->dst_address.as_u32;
- }
-
- vlib_buffer_advance (b0, sizeof (*h0));
- vlib_buffer_advance (b1, sizeof (*h1));
-
- vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, bi1, next0, next1);
+ nidx[0] = cached_next_index;
}
-
- while (n_left_from > 0 && n_left_to_next > 0)
+ else
{
- u32 bi0;
- vlib_buffer_t * b0;
- gre_header_t * h0;
- ip4_header_t * ip0;
- u16 version0;
- int verr0;
- u32 i0, next0;
-
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
- ip0 = vlib_buffer_get_current (b0);
-
- vnet_buffer(b0)->gre.src = ip0->src_address.as_u32;
- vnet_buffer(b0)->gre.dst = ip0->dst_address.as_u32;
-
- vlib_buffer_advance (b0, sizeof (*ip0));
-
- h0 = vlib_buffer_get_current (b0);
-
- i0 = sparse_vec_index (rt->next_by_protocol, h0->protocol);
- next0 = vec_elt(rt->next_by_protocol, i0);
-
- b0->error =
- node->errors[i0 == SPARSE_VEC_INVALID_INDEX
- ? GRE_ERROR_UNKNOWN_PROTOCOL : GRE_ERROR_NONE];
-
- version0 = clib_net_to_host_u16 (h0->flags_and_version);
- verr0 = version0 & GRE_VERSION_MASK;
- b0->error = verr0 ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION]
- : b0->error;
- next0 = verr0 ? GRE_INPUT_NEXT_DROP : next0;
-
-
- /* For IP payload we need to find source interface
- so we can increase counters and help forward node to
- pick right FIB */
- /* RPF check for ip4/ip6 input */
- if (PREDICT_TRUE(next0 == GRE_INPUT_NEXT_IP4_INPUT
- || next0 == GRE_INPUT_NEXT_IP6_INPUT
- || next0 == GRE_INPUT_NEXT_ETHERNET_INPUT
- || next0 == GRE_INPUT_NEXT_MPLS_INPUT))
- {
- u64 key = ((u64)(vnet_buffer(b0)->gre.dst) << 32) |
- (u64)(vnet_buffer(b0)->gre.src);
-
- if (cached_tunnel_key != key)
- {
- vnet_hw_interface_t * hi;
- gre_tunnel_t * t;
- uword * p;
-
- p = hash_get (gm->tunnel_by_key, key);
- if (!p)
- {
- next0 = GRE_INPUT_NEXT_DROP;
- b0->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL];
- goto drop;
- }
- t = pool_elt_at_index (gm->tunnels, p[0]);
- hi = vnet_get_hw_interface (gm->vnet_main,
- t->hw_if_index);
- tunnel_sw_if_index = hi->sw_if_index;
-
- cached_tunnel_sw_if_index = tunnel_sw_if_index;
- }
- else
- {
- tunnel_sw_if_index = cached_tunnel_sw_if_index;
- }
- }
- else
- {
- next0 = GRE_INPUT_NEXT_DROP;
- goto drop;
- }
- len = vlib_buffer_length_in_chain (vm, b0);
- vlib_increment_combined_counter (im->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_RX,
- cpu_index,
- tunnel_sw_if_index,
- 1 /* packets */,
- len /* bytes */);
-
- vnet_buffer(b0)->sw_if_index[VLIB_RX] = tunnel_sw_if_index;
-
-drop:
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- gre_rx_trace_t *tr = vlib_add_trace (vm, node,
- b0, sizeof (*tr));
- tr->tunnel_id = tunnel_sw_if_index;
- tr->length = ip0->length;
- tr->src.as_u32 = ip0->src_address.as_u32;
- tr->dst.as_u32 = ip0->dst_address.as_u32;
- }
-
- vlib_buffer_advance (b0, sizeof (*h0));
-
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, next0);
+ cached_next_index = nidx[0] =
+ sparse_vec_index (gm->next_by_protocol, gre[0]->protocol);
+ cached_protocol = gre[0]->protocol;
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ ni[0] = vec_elt (gm->next_by_protocol, nidx[0]);
+ next[0] = ni[0].next_index;
+ type[0] = ni[0].tunnel_type;
+
+ b[0]->error = nidx[0] == SPARSE_VEC_INVALID_INDEX
+ ? node->errors[GRE_ERROR_UNKNOWN_PROTOCOL]
+ : node->errors[GRE_ERROR_NONE];
+
+ version[0] = clib_net_to_host_u16 (gre[0]->flags_and_version);
+ version[0] &= GRE_VERSION_MASK;
+
+ b[0]->error = version[0]
+ ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] : b[0]->error;
+ next[0] = version[0] ? GRE_INPUT_NEXT_DROP : next[0];
+
+ len[0] = vlib_buffer_length_in_chain (vm, b[0]);
+
+ if (is_ipv6)
+ {
+ gre_mk_key6 (&ip6[0]->dst_address,
+ &ip6[0]->src_address,
+ vnet_buffer (b[0])->ip.fib_index,
+ type[0], TUNNEL_MODE_P2P, 0, &key[0].gtk_v6);
+ matched[0] = gre_match_key6 (&cached_key.gtk_v6, &key[0].gtk_v6);
+ }
+ else
+ {
+ gre_mk_key4 (ip4[0]->dst_address,
+ ip4[0]->src_address,
+ vnet_buffer (b[0])->ip.fib_index,
+ type[0], TUNNEL_MODE_P2P, 0, &key[0].gtk_v4);
+ matched[0] = gre_match_key4 (&cached_key.gtk_v4, &key[0].gtk_v4);
+ }
+
+ tun_sw_if_index[0] = cached_tun_sw_if_index;
+ if (PREDICT_FALSE (!matched[0]))
+ gre_tunnel_get (gm, node, b[0], &next[0], &key[0], &cached_key,
+ &tun_sw_if_index[0], &cached_tun_sw_if_index,
+ is_ipv6);
+
+ if (PREDICT_TRUE (next[0] > GRE_INPUT_NEXT_DROP))
+ {
+ vlib_increment_combined_counter (&gm->vnet_main->
+ interface_main.combined_sw_if_counters
+ [VNET_INTERFACE_COUNTER_RX],
+ vm->thread_index,
+ tun_sw_if_index[0],
+ 1 /* packets */ ,
+ len[0] /* bytes */ );
+ vnet_buffer (b[0])->sw_if_index[VLIB_RX] = tun_sw_if_index[0];
+ }
+
+ if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
+ gre_trace (vm, node, b[0], tun_sw_if_index[0], ip6[0], ip4[0],
+ is_ipv6);
+
+ b += 1;
+ next += 1;
+ n_left_from -= 1;
}
- vlib_node_increment_counter (vm, gre_input_node.index,
- GRE_ERROR_PKTS_DECAP, from_frame->n_vectors);
- return from_frame->n_vectors;
+
+ vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
+
+ vlib_node_increment_counter (vm,
+ is_ipv6 ? gre6_input_node.index :
+ gre4_input_node.index, GRE_ERROR_PKTS_DECAP,
+ n_left_from);
+
+ return frame->n_vectors;
+}
+
+VLIB_NODE_FN (gre4_input_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return gre_input (vm, node, from_frame, /* is_ip6 */ 0);
+}
+
+VLIB_NODE_FN (gre6_input_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return gre_input (vm, node, from_frame, /* is_ip6 */ 1);
}
-static char * gre_error_strings[] = {
+static char *gre_error_strings[] = {
#define gre_error(n,s) s,
#include "error.def"
#undef gre_error
};
-VLIB_REGISTER_NODE (gre_input_node) = {
- .function = gre_input,
- .name = "gre-input",
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (gre4_input_node) = {
+ .name = "gre4-input",
+ /* Takes a vector of packets. */
+ .vector_size = sizeof (u32),
+
+ .n_errors = GRE_N_ERROR,
+ .error_strings = gre_error_strings,
+
+ .n_next_nodes = GRE_INPUT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [GRE_INPUT_NEXT_##s] = n,
+ foreach_gre_input_next
+#undef _
+ },
+
+ .format_buffer = format_gre_header_with_length,
+ .format_trace = format_gre_rx_trace,
+ .unformat_buffer = unformat_gre_header,
+};
+
+VLIB_REGISTER_NODE (gre6_input_node) = {
+ .name = "gre6-input",
/* Takes a vector of packets. */
.vector_size = sizeof (u32),
.format_trace = format_gre_rx_trace,
.unformat_buffer = unformat_gre_header,
};
+/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (gre_input_node, gre_input)
-
+#ifndef CLIB_MARCH_VARIANT
void
gre_register_input_protocol (vlib_main_t * vm,
- gre_protocol_t protocol,
- u32 node_index)
+ gre_protocol_t protocol, u32 node_index,
+ gre_tunnel_type_t tunnel_type)
{
- gre_main_t * em = &gre_main;
- gre_protocol_info_t * pi;
- gre_input_runtime_t * rt;
- u16 * n;
+ gre_main_t *em = &gre_main;
+ gre_protocol_info_t *pi;
+ next_info_t *n;
+ u32 i;
{
- clib_error_t * error = vlib_call_init_function (vm, gre_input_init);
+ clib_error_t *error = vlib_call_init_function (vm, gre_input_init);
if (error)
clib_error_report (error);
}
pi = gre_get_protocol_info (em, protocol);
pi->node_index = node_index;
- pi->next_index = vlib_node_add_next (vm,
- gre_input_node.index,
- node_index);
+ pi->tunnel_type = tunnel_type;
+ pi->next_index = vlib_node_add_next (vm, gre4_input_node.index, node_index);
+ i = vlib_node_add_next (vm, gre6_input_node.index, node_index);
+ ASSERT (i == pi->next_index);
/* Setup gre protocol -> next index sparse vector mapping. */
- rt = vlib_node_get_runtime_data (vm, gre_input_node.index);
- n = sparse_vec_validate (rt->next_by_protocol,
- clib_host_to_net_u16 (protocol));
- n[0] = pi->next_index;
+ n = sparse_vec_validate (em->next_by_protocol,
+ clib_host_to_net_u16 (protocol));
+ n->next_index = pi->next_index;
+ n->tunnel_type = tunnel_type;
}
static void
gre_setup_node (vlib_main_t * vm, u32 node_index)
{
- vlib_node_t * n = vlib_get_node (vm, node_index);
- pg_node_t * pn = pg_get_node (node_index);
+ vlib_node_t *n = vlib_get_node (vm, node_index);
+ pg_node_t *pn = pg_get_node (node_index);
n->format_buffer = format_gre_header_with_length;
n->unformat_buffer = unformat_gre_header;
pn->unformat_edit = unformat_pg_gre_header;
}
-static clib_error_t * gre_input_init (vlib_main_t * vm)
+static clib_error_t *
+gre_input_init (vlib_main_t * vm)
{
- gre_input_runtime_t * rt;
+ gre_main_t *gm = &gre_main;
vlib_node_t *ethernet_input, *ip4_input, *ip6_input, *mpls_unicast_input;
{
- clib_error_t * error;
+ clib_error_t *error;
error = vlib_call_init_function (vm, gre_init);
if (error)
clib_error_report (error);
}
- gre_setup_node (vm, gre_input_node.index);
+ gre_setup_node (vm, gre4_input_node.index);
+ gre_setup_node (vm, gre6_input_node.index);
- rt = vlib_node_get_runtime_data (vm, gre_input_node.index);
-
- rt->next_by_protocol = sparse_vec_new
- (/* elt bytes */ sizeof (rt->next_by_protocol[0]),
+ gm->next_by_protocol = sparse_vec_new
+ ( /* elt bytes */ sizeof (gm->next_by_protocol[0]),
/* bits in index */ BITS (((gre_header_t *) 0)->protocol));
/* These could be moved to the supported protocol input node defn's */
- ethernet_input = vlib_get_node_by_name (vm, (u8 *)"ethernet-input");
- ASSERT(ethernet_input);
- ip4_input = vlib_get_node_by_name (vm, (u8 *)"ip4-input");
- ASSERT(ip4_input);
- ip6_input = vlib_get_node_by_name (vm, (u8 *)"ip6-input");
- ASSERT(ip6_input);
- mpls_unicast_input = vlib_get_node_by_name (vm, (u8 *)"mpls-input");
- ASSERT(mpls_unicast_input);
+ ethernet_input = vlib_get_node_by_name (vm, (u8 *) "ethernet-input");
+ ASSERT (ethernet_input);
+ ip4_input = vlib_get_node_by_name (vm, (u8 *) "ip4-input");
+ ASSERT (ip4_input);
+ ip6_input = vlib_get_node_by_name (vm, (u8 *) "ip6-input");
+ ASSERT (ip6_input);
+ mpls_unicast_input = vlib_get_node_by_name (vm, (u8 *) "mpls-input");
+ ASSERT (mpls_unicast_input);
gre_register_input_protocol (vm, GRE_PROTOCOL_teb,
- ethernet_input->index);
+ ethernet_input->index, GRE_TUNNEL_TYPE_TEB);
- gre_register_input_protocol (vm, GRE_PROTOCOL_ip4,
- ip4_input->index);
+ gre_register_input_protocol (vm, GRE_PROTOCOL_ip4,
+ ip4_input->index, GRE_TUNNEL_TYPE_L3);
- gre_register_input_protocol (vm, GRE_PROTOCOL_ip6,
- ip6_input->index);
+ gre_register_input_protocol (vm, GRE_PROTOCOL_ip6,
+ ip6_input->index, GRE_TUNNEL_TYPE_L3);
gre_register_input_protocol (vm, GRE_PROTOCOL_mpls_unicast,
- mpls_unicast_input->index);
-
- ip4_register_protocol (IP_PROTOCOL_GRE, gre_input_node.index);
+ mpls_unicast_input->index, GRE_TUNNEL_TYPE_L3);
return 0;
}
VLIB_INIT_FUNCTION (gre_input_init);
+
+#endif /* CLIB_MARCH_VARIANT */
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff