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-rw-r--r--src/vnet/gre/node.c802
1 files changed, 340 insertions, 462 deletions
diff --git a/src/vnet/gre/node.c b/src/vnet/gre/node.c
index ad3c8c6e10d..ff74d1b4e79 100644
--- a/src/vnet/gre/node.c
+++ b/src/vnet/gre/node.c
@@ -43,10 +43,12 @@ typedef struct
u32 length;
ip46_address_t src;
ip46_address_t dst;
- u8 is_ipv6;
} gre_rx_trace_t;
-static u8 *
+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 *);
@@ -59,6 +61,7 @@ format_gre_rx_trace (u8 * s, va_list * args)
format_ip46_address, &t->dst, IP46_TYPE_ANY);
return s;
}
+#endif /* CLIB_MARCH_VARIANT */
typedef struct
{
@@ -67,488 +70,363 @@ typedef struct
u16 *next_by_protocol;
} gre_input_runtime_t;
+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, u8 is_ipv6)
+ vlib_node_runtime_t * node, vlib_frame_t * frame,
+ const int is_ipv6)
{
gre_main_t *gm = &gre_main;
- __attribute__ ((unused)) u32 n_left_from, next_index, *from, *to_next;
- gre_tunnel_key_t cached_tunnel_key;
+ 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));
- u32 cached_tunnel_sw_if_index = ~0, tunnel_sw_if_index = ~0;
+ 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 thread_index = vm->thread_index;
- 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]));
+ }
- if (!is_ipv6)
- clib_memset (&cached_tunnel_key.gtk_v4, 0xff,
- sizeof (cached_tunnel_key.gtk_v4));
- else
- clib_memset (&cached_tunnel_key.gtk_v6, 0xff,
- sizeof (cached_tunnel_key.gtk_v6));
+ 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;
+ }
+
+ 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]);
+
+ if (is_ipv6)
+ {
+ gre_mk_key6 (&ip6[0]->dst_address,
+ &ip6[0]->src_address,
+ vnet_buffer (b[0])->ip.fib_index,
+ type[0], 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], 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], 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], 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);
+ }
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
+ 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];
+ }
- next_index = node->cached_next_index;
+ 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);
- while (n_left_from > 0)
+ 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 *ip4_0, *ip4_1;
- ip6_header_t *ip6_0, *ip6_1;
- gre_tunnel_key_t key0, key1;
-
- /* 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);
-
- if (!is_ipv6)
- {
- /* ip4_local hands us the ip header, not the gre header */
- ip4_0 = vlib_buffer_get_current (b0);
- ip4_1 = vlib_buffer_get_current (b1);
-
- vlib_buffer_advance (b0, sizeof (*ip4_0));
- vlib_buffer_advance (b1, sizeof (*ip4_1));
- }
- else
- {
- /* ip6_local hands us the ip header, not the gre header */
- ip6_0 = vlib_buffer_get_current (b0);
- ip6_1 = vlib_buffer_get_current (b1);
-
- vlib_buffer_advance (b0, sizeof (*ip6_0));
- vlib_buffer_advance (b1, sizeof (*ip6_1));
- }
-
- 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 (gm->next_by_protocol, protocol0, protocol1,
- &i0, &i1);
- next0 = vec_elt (gm->next_by_protocol, i0).next_index;
- next1 = vec_elt (gm->next_by_protocol, i1).next_index;
- u8 ttype0 = vec_elt (gm->next_by_protocol, i0).tunnel_type;
- u8 ttype1 = vec_elt (gm->next_by_protocol, i1).tunnel_type;
-
- 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_DROP))
- {
- if (is_ipv6)
- {
- gre_mk_key6 (&ip6_0->dst_address,
- &ip6_0->src_address,
- vnet_buffer (b0)->ip.fib_index,
- ttype0, 0, &key0.gtk_v6);
- }
- else
- {
- gre_mk_key4 (ip4_0->dst_address,
- ip4_0->src_address,
- vnet_buffer (b0)->ip.fib_index,
- ttype0, 0, &key0.gtk_v4);
- }
-
- if ((!is_ipv6 && !gre_match_key4 (&cached_tunnel_key.gtk_v4,
- &key0.gtk_v4)) ||
- (is_ipv6 && !gre_match_key6 (&cached_tunnel_key.gtk_v6,
- &key0.gtk_v6)))
- {
- gre_tunnel_t *t;
- uword *p;
-
- if (!is_ipv6)
- {
- p = hash_get_mem (gm->tunnel_by_key4, &key0.gtk_v4);
- }
- else
- {
- p = hash_get_mem (gm->tunnel_by_key6, &key0.gtk_v6);
- }
- 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]);
- tunnel_sw_if_index = t->sw_if_index;
-
- cached_tunnel_sw_if_index = tunnel_sw_if_index;
- if (!is_ipv6)
- {
- cached_tunnel_key.gtk_v4 = key0.gtk_v4;
- }
- else
- {
- cached_tunnel_key.gtk_v6 = key0.gtk_v6;
- }
- }
- 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,
- thread_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_DROP))
- {
- if (is_ipv6)
- {
- gre_mk_key6 (&ip6_1->dst_address,
- &ip6_1->src_address,
- vnet_buffer (b1)->ip.fib_index,
- ttype1, 0, &key1.gtk_v6);
- }
- else
- {
- gre_mk_key4 (ip4_1->dst_address,
- ip4_1->src_address,
- vnet_buffer (b1)->ip.fib_index,
- ttype1, 0, &key1.gtk_v4);
- }
-
- if ((!is_ipv6 && !gre_match_key4 (&cached_tunnel_key.gtk_v4,
- &key1.gtk_v4)) ||
- (is_ipv6 && !gre_match_key6 (&cached_tunnel_key.gtk_v6,
- &key1.gtk_v6)))
- {
- gre_tunnel_t *t;
- uword *p;
-
- if (!is_ipv6)
- {
- p = hash_get_mem (gm->tunnel_by_key4, &key1.gtk_v4);
- }
- else
- {
- p = hash_get_mem (gm->tunnel_by_key6, &key1.gtk_v6);
- }
- 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]);
- tunnel_sw_if_index = t->sw_if_index;
-
- cached_tunnel_sw_if_index = tunnel_sw_if_index;
- if (!is_ipv6)
- {
- cached_tunnel_key.gtk_v4 = key1.gtk_v4;
- }
- else
- {
- cached_tunnel_key.gtk_v6 = key1.gtk_v6;
- }
- }
- 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,
- thread_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;
- if (!is_ipv6)
- {
- tr->length = ip4_0->length;
- tr->src.ip4.as_u32 = ip4_0->src_address.as_u32;
- tr->dst.ip4.as_u32 = ip4_0->dst_address.as_u32;
- }
- else
- {
- tr->length = ip6_0->payload_length;
- tr->src.ip6.as_u64[0] = ip6_0->src_address.as_u64[0];
- tr->src.ip6.as_u64[1] = ip6_0->src_address.as_u64[1];
- tr->dst.ip6.as_u64[0] = ip6_0->dst_address.as_u64[0];
- tr->dst.ip6.as_u64[1] = ip6_0->dst_address.as_u64[1];
- }
- }
-
- 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;
- if (!is_ipv6)
- {
- tr->length = ip4_1->length;
- tr->src.ip4.as_u32 = ip4_1->src_address.as_u32;
- tr->dst.ip4.as_u32 = ip4_1->dst_address.as_u32;
- }
- else
- {
- tr->length = ip6_1->payload_length;
- tr->src.ip6.as_u64[0] = ip6_1->src_address.as_u64[0];
- tr->src.ip6.as_u64[1] = ip6_1->src_address.as_u64[1];
- tr->dst.ip6.as_u64[0] = ip6_1->dst_address.as_u64[0];
- tr->dst.ip6.as_u64[1] = ip6_1->dst_address.as_u64[1];
- }
- }
-
- 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;
+ }
+ else
+ {
+ cached_next_index = nidx[0] =
+ sparse_vec_index (gm->next_by_protocol, gre[0]->protocol);
+ cached_protocol = gre[0]->protocol;
+ }
+
+ 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], 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], 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);
- while (n_left_from > 0 && n_left_to_next > 0)
+ if (PREDICT_TRUE (next[0] > GRE_INPUT_NEXT_DROP))
{
- u32 bi0;
- vlib_buffer_t *b0;
- gre_header_t *h0;
- ip4_header_t *ip4_0;
- ip6_header_t *ip6_0;
- u16 version0;
- int verr0;
- u32 i0, next0;
- gre_tunnel_key_t key0;
-
- 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);
- ip4_0 = vlib_buffer_get_current (b0);
- ip6_0 = (void *) ip4_0;
-
- if (!is_ipv6)
- {
- vlib_buffer_advance (b0, sizeof (*ip4_0));
- }
- else
- {
- vlib_buffer_advance (b0, sizeof (*ip6_0));
- }
-
- h0 = vlib_buffer_get_current (b0);
-
- i0 = sparse_vec_index (gm->next_by_protocol, h0->protocol);
- next0 = vec_elt (gm->next_by_protocol, i0).next_index;
- u8 ttype0 = vec_elt (gm->next_by_protocol, i0).tunnel_type;
-
- 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_DROP))
- {
- if (is_ipv6)
- {
- gre_mk_key6 (&ip6_0->dst_address,
- &ip6_0->src_address,
- vnet_buffer (b0)->ip.fib_index,
- ttype0, 0, &key0.gtk_v6);
- }
- else
- {
- gre_mk_key4 (ip4_0->dst_address,
- ip4_0->src_address,
- vnet_buffer (b0)->ip.fib_index,
- ttype0, 0, &key0.gtk_v4);
- }
-
- if ((!is_ipv6 && !gre_match_key4 (&cached_tunnel_key.gtk_v4,
- &key0.gtk_v4)) ||
- (is_ipv6 && !gre_match_key6 (&cached_tunnel_key.gtk_v6,
- &key0.gtk_v6)))
- {
- gre_tunnel_t *t;
- uword *p;
-
- if (!is_ipv6)
- {
- p = hash_get_mem (gm->tunnel_by_key4, &key0.gtk_v4);
- }
- else
- {
- p = hash_get_mem (gm->tunnel_by_key6, &key0.gtk_v6);
- }
- 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]);
- tunnel_sw_if_index = t->sw_if_index;
-
- cached_tunnel_sw_if_index = tunnel_sw_if_index;
- if (!is_ipv6)
- {
- cached_tunnel_key.gtk_v4 = key0.gtk_v4;
- }
- else
- {
- cached_tunnel_key.gtk_v6 = key0.gtk_v6;
- }
- }
- 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,
- thread_index,
- tunnel_sw_if_index,
+ 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 /* 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;
- if (!is_ipv6)
- {
- tr->length = ip4_0->length;
- tr->src.ip4.as_u32 = ip4_0->src_address.as_u32;
- tr->dst.ip4.as_u32 = ip4_0->dst_address.as_u32;
- }
- else
- {
- tr->length = ip6_0->payload_length;
- tr->src.ip6.as_u64[0] = ip6_0->src_address.as_u64[0];
- tr->src.ip6.as_u64[1] = ip6_0->src_address.as_u64[1];
- tr->dst.ip6.as_u64[0] = ip6_0->dst_address.as_u64[0];
- tr->dst.ip6.as_u64[1] = ip6_0->dst_address.as_u64[1];
- }
- }
-
- vlib_buffer_advance (b0, sizeof (*h0));
-
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, next0);
+ len[0] /* bytes */ );
+ vnet_buffer (b[0])->sw_if_index[VLIB_RX] = tun_sw_if_index[0];
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ 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_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
+
vlib_node_increment_counter (vm,
- !is_ipv6 ? gre4_input_node.index :
- gre6_input_node.index, GRE_ERROR_PKTS_DECAP,
- from_frame->n_vectors);
- return from_frame->n_vectors;
+ 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,