*/
#include <vlib/vlib.h>
-#include <vnet/pg/pg.h>
#include <vnet/ip/ip.h>
#include <vnet/mpls/mpls.h>
#include <vnet/ip/ip_frag.h>
+#include <vnet/adj/adj_dp.h>
typedef struct {
/* Adjacency taken. */
}
if (mode == MPLS_OUTPUT_MIDCHAIN_MODE)
{
- adj0->sub_type.midchain.fixup_func
- (vm, adj0, p0,
- adj0->sub_type.midchain.fixup_data);
- adj1->sub_type.midchain.fixup_func
- (vm, adj1, p1,
- adj1->sub_type.midchain.fixup_data);
- }
+ adj_midchain_fixup (vm, adj0, p0, VNET_LINK_MPLS);
+ adj_midchain_fixup (vm, adj1, p1, VNET_LINK_MPLS);
+ }
- p0->error = error_node->errors[error0];
- p1->error = error_node->errors[error1];
+ p0->error = error_node->errors[error0];
+ p1->error = error_node->errors[error1];
- if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED))
- {
- mpls_output_trace_t *tr = vlib_add_trace (vm, node,
- p0, sizeof (*tr));
- tr->adj_index = vnet_buffer(p0)->ip.adj_index[VLIB_TX];
- tr->flow_hash = vnet_buffer(p0)->ip.flow_hash;
- }
- if (PREDICT_FALSE(p1->flags & VLIB_BUFFER_IS_TRACED))
- {
- mpls_output_trace_t *tr = vlib_add_trace (vm, node,
- p1, sizeof (*tr));
- tr->adj_index = vnet_buffer(p1)->ip.adj_index[VLIB_TX];
- tr->flow_hash = vnet_buffer(p1)->ip.flow_hash;
- }
+ if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ mpls_output_trace_t *tr =
+ vlib_add_trace (vm, node, p0, sizeof (*tr));
+ tr->adj_index = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
+ tr->flow_hash = vnet_buffer (p0)->ip.flow_hash;
+ }
+ if (PREDICT_FALSE (p1->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ mpls_output_trace_t *tr =
+ vlib_add_trace (vm, node, p1, sizeof (*tr));
+ tr->adj_index = vnet_buffer (p1)->ip.adj_index[VLIB_TX];
+ tr->flow_hash = vnet_buffer (p1)->ip.flow_hash;
+ }
- vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
- to_next, n_left_to_next,
- pi0, pi1, next0, next1);
- }
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
+ n_left_to_next, pi0, pi1, next0,
+ next1);
+ }
while (n_left_from > 0 && n_left_to_next > 0)
{
hdr0 = vlib_buffer_get_current (p0);
/* Guess we are only writing on simple Ethernet header. */
- vnet_rewrite_one_header (adj0[0], hdr0,
+ vnet_rewrite_one_header (adj0[0], hdr0,
sizeof (ethernet_header_t));
-
+
/* Update packet buffer attributes/set output interface. */
rw_len0 = adj0[0].rewrite_header.data_bytes;
vnet_buffer (p0)->mpls.save_rewrite_length = rw_len0;
}
if (mode == MPLS_OUTPUT_MIDCHAIN_MODE)
{
- adj0->sub_type.midchain.fixup_func
- (vm, adj0, p0,
- adj0->sub_type.midchain.fixup_data);
- }
+ adj_midchain_fixup (vm, adj0, p0, VNET_LINK_MPLS);
+ }
- p0->error = error_node->errors[error0];
+ p0->error = error_node->errors[error0];
from += 1;
n_left_from -= 1;
to_next += 1;
n_left_to_next -= 1;
-
- if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED))
+
+ if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED))
{
- mpls_output_trace_t *tr = vlib_add_trace (vm, node,
+ mpls_output_trace_t *tr = vlib_add_trace (vm, node,
p0, sizeof (*tr));
tr->adj_index = vnet_buffer(p0)->ip.adj_index[VLIB_TX];
tr->flow_hash = vnet_buffer(p0)->ip.flow_hash;
.format_trace = format_mpls_output_trace,
};
-static char *mpls_frag_error_strings[] = {
-#define _(sym,string) string,
- foreach_ip_frag_error
-#undef _
-};
-
typedef struct mpls_frag_trace_t_
{
u16 pkt_size;
typedef enum
{
- MPLS_FRAG_NEXT_REWRITE,
- MPLS_FRAG_NEXT_REWRITE_MIDCHAIN,
- MPLS_FRAG_NEXT_ICMP_ERROR,
- MPLS_FRAG_NEXT_DROP,
- MPLS_FRAG_N_NEXT,
+ MPLS_FRAG_NEXT_REWRITE,
+ MPLS_FRAG_NEXT_REWRITE_MIDCHAIN,
+ MPLS_FRAG_NEXT_ICMP4_ERROR,
+ MPLS_FRAG_NEXT_ICMP6_ERROR,
+ MPLS_FRAG_NEXT_DROP,
+ MPLS_FRAG_N_NEXT,
} mpls_frag_next_t;
static uword
vlib_frame_t * frame)
{
u32 n_left_from, next_index, * from, * to_next, n_left_to_next, *frags;
- vlib_node_runtime_t * error_node;
- error_node = vlib_node_get_runtime (vm, mpls_output_node.index);
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
mpls_frag_next_t next0;
u32 pi0, adj_index0;
ip_frag_error_t error0 = IP_FRAG_ERROR_NONE;
- i16 encap_size;
- u8 is_ip4;
-
- pi0 = to_next[0] = from[0];
- p0 = vlib_get_buffer (vm, pi0);
- from += 1;
- n_left_from -= 1;
- is_ip4 = vnet_buffer (p0)->mpls.pyld_proto == DPO_PROTO_IP4;
-
- adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
- adj0 = adj_get(adj_index0);
-
- /* the size of the MPLS stack */
- encap_size = vnet_buffer(p0)->l3_hdr_offset - p0->current_data;
-
- /* IP fragmentation */
- if (is_ip4)
- error0 = ip4_frag_do_fragment (vm, pi0,
- adj0->rewrite_header.max_l3_packet_bytes,
- encap_size, &frags);
- else
- error0 = ip6_frag_do_fragment (vm, pi0,
- adj0->rewrite_header.max_l3_packet_bytes,
- encap_size, &frags);
-
- if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
- {
- mpls_frag_trace_t *tr =
- vlib_add_trace (vm, node, p0, sizeof (*tr));
- tr->mtu = adj0->rewrite_header.max_l3_packet_bytes;
- tr->pkt_size = vlib_buffer_length_in_chain(vm, p0);
- }
-
- if (PREDICT_TRUE(error0 == IP_FRAG_ERROR_NONE))
- {
- /* Free original buffer chain */
- vlib_buffer_free_one (vm, pi0); /* Free original packet */
- next0 = (IP_LOOKUP_NEXT_MIDCHAIN == adj0->lookup_next_index ?
- MPLS_FRAG_NEXT_REWRITE_MIDCHAIN :
- MPLS_FRAG_NEXT_REWRITE);
- }
- else if (is_ip4 && error0 == IP_FRAG_ERROR_DONT_FRAGMENT_SET)
- {
- icmp4_error_set_vnet_buffer (
- p0, ICMP4_destination_unreachable,
- ICMP4_destination_unreachable_fragmentation_needed_and_dont_fragment_set,
- vnet_buffer (p0)->ip_frag.mtu);
- next0 = MPLS_FRAG_NEXT_ICMP_ERROR;
- }
- else
- {
- vlib_error_count (vm, next_index, error0, 1);
- vec_add1 (frags, pi0); /* Get rid of the original buffer */
- next0 = MPLS_FRAG_NEXT_DROP;
- }
-
- /* Send fragments that were added in the frame */
- u32 *frag_from, frag_left;
-
- frag_from = frags;
- frag_left = vec_len (frags);
-
- while (frag_left > 0)
- {
- while (frag_left > 0 && n_left_to_next > 0)
- {
- u32 i;
- i = to_next[0] = frag_from[0];
- frag_from += 1;
- frag_left -= 1;
- to_next += 1;
- n_left_to_next -= 1;
-
- p0 = vlib_get_buffer (vm, i);
- p0->error = error_node->errors[error0];
-
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next, i,
- next0);
- }
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- vlib_get_next_frame (vm, node, next_index, to_next,
- n_left_to_next);
- }
- vec_reset_length (frags);
+ i16 encap_size, mtu;
+ u8 is_ip4;
+
+ pi0 = to_next[0] = from[0];
+ p0 = vlib_get_buffer (vm, pi0);
+ from += 1;
+ n_left_from -= 1;
+ is_ip4 = vnet_buffer (p0)->mpls.pyld_proto == DPO_PROTO_IP4;
+
+ adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
+ adj0 = adj_get (adj_index0);
+
+ /* the size of the MPLS stack */
+ encap_size = vnet_buffer (p0)->l3_hdr_offset - p0->current_data;
+ mtu = adj0->rewrite_header.max_l3_packet_bytes - encap_size;
+
+ /* IP fragmentation */
+ if (is_ip4)
+ error0 = ip4_frag_do_fragment (vm, pi0, mtu, encap_size, &frags);
+ else
+ {
+ if (!(p0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED))
+ {
+ /* only fragment locally generated IPv6 */
+ error0 = IP_FRAG_ERROR_DONT_FRAGMENT_SET;
+ }
+ else
+ {
+ error0 =
+ ip6_frag_do_fragment (vm, pi0, mtu, encap_size, &frags);
+ }
+ }
+
+ if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ mpls_frag_trace_t *tr =
+ vlib_add_trace (vm, node, p0, sizeof (*tr));
+ tr->mtu = mtu;
+ tr->pkt_size = vlib_buffer_length_in_chain (vm, p0);
+ }
+
+ if (PREDICT_TRUE (error0 == IP_FRAG_ERROR_NONE))
+ {
+ /* Free original buffer chain */
+ vlib_buffer_free_one (vm, pi0);
+ next0 = (IP_LOOKUP_NEXT_MIDCHAIN == adj0->lookup_next_index ?
+ MPLS_FRAG_NEXT_REWRITE_MIDCHAIN :
+ MPLS_FRAG_NEXT_REWRITE);
+ }
+ else
+ {
+ vlib_error_count (vm, node->node_index, error0, 1);
+
+ if (error0 == IP_FRAG_ERROR_DONT_FRAGMENT_SET)
+ {
+ vlib_buffer_advance (p0, encap_size);
+ if (is_ip4)
+ {
+ icmp4_error_set_vnet_buffer (
+ p0, ICMP4_destination_unreachable,
+ ICMP4_destination_unreachable_fragmentation_needed_and_dont_fragment_set,
+ mtu);
+ next0 = MPLS_FRAG_NEXT_ICMP4_ERROR;
+ }
+ else
+ {
+ icmp6_error_set_vnet_buffer (p0, ICMP6_packet_too_big,
+ 0, mtu);
+ next0 = MPLS_FRAG_NEXT_ICMP6_ERROR;
+ }
+ }
+ else
+ {
+ next0 = MPLS_FRAG_NEXT_DROP;
+ }
+
+ /* Get rid of the original buffer */
+ vec_add1 (frags, pi0);
+ }
+
+ /* Send fragments that were added in the frame */
+ u32 *frag_from, frag_left;
+
+ frag_from = frags;
+ frag_left = vec_len (frags);
+
+ while (frag_left > 0)
+ {
+ while (frag_left > 0 && n_left_to_next > 0)
+ {
+ u32 i;
+ i = to_next[0] = frag_from[0];
+ frag_from += 1;
+ frag_left -= 1;
+ to_next += 1;
+ n_left_to_next -= 1;
+
+ vlib_validate_buffer_enqueue_x1 (
+ vm, node, next_index, to_next, n_left_to_next, i, next0);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ vlib_get_next_frame (vm, node, next_index, to_next,
+ n_left_to_next);
+ }
+ vec_reset_length (frags);
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
}
VLIB_REGISTER_NODE (mpls_frag_node) = {
- .function = mpls_frag,
- .name = "mpls-frag",
- .vector_size = sizeof (u32),
- .format_trace = format_mpls_frag_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = IP_FRAG_N_ERROR,
- .error_strings = mpls_frag_error_strings,
-
- .n_next_nodes = MPLS_FRAG_N_NEXT,
- .next_nodes = {
- [MPLS_FRAG_NEXT_REWRITE] = "mpls-output",
- [MPLS_FRAG_NEXT_REWRITE_MIDCHAIN] = "mpls-midchain",
- [MPLS_FRAG_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [MPLS_FRAG_NEXT_DROP] = "mpls-drop"
- },
+ .function = mpls_frag,
+ .name = "mpls-frag",
+ .vector_size = sizeof (u32),
+ .format_trace = format_mpls_frag_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = IP_FRAG_N_ERROR,
+ .error_counters = ip_frag_error_counters,
+
+ .n_next_nodes = MPLS_FRAG_N_NEXT,
+ .next_nodes = { [MPLS_FRAG_NEXT_REWRITE] = "mpls-output",
+ [MPLS_FRAG_NEXT_REWRITE_MIDCHAIN] = "mpls-midchain",
+ [MPLS_FRAG_NEXT_ICMP4_ERROR] = "ip4-icmp-error",
+ [MPLS_FRAG_NEXT_ICMP6_ERROR] = "ip6-icmp-error",
+ [MPLS_FRAG_NEXT_DROP] = "mpls-drop" },
};
/*
else
{
next0 = MPLS_ADJ_INCOMPLETE_NEXT_IP6;
- }
+ }
- if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED))
+ if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED))
{
mpls_adj_incomplete_trace_t *tr =
vlib_add_trace (vm, node, p0, sizeof (*tr));
#undef _
},
};
-
Code Review / vpp.git / blobdiff