#include <vnet/dpo/classify_dpo.h>
#include <vnet/mfib/mfib_table.h> /* for mFIB table and entry creation */
-/**
- * @file
- * @brief IPv4 Forwarding.
- *
- * This file contains the source code for IPv4 forwarding.
- */
-
-always_inline uword
-ip4_lookup_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame,
- int lookup_for_responses_to_locally_received_packets)
-{
- ip4_main_t *im = &ip4_main;
- vlib_combined_counter_main_t *cm = &load_balance_main.lbm_to_counters;
- u32 n_left_from, n_left_to_next, *from, *to_next;
- ip_lookup_next_t next;
- u32 thread_index = vlib_get_thread_index ();
-
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors;
- next = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- vlib_get_next_frame (vm, node, next, to_next, n_left_to_next);
-
- while (n_left_from >= 8 && n_left_to_next >= 4)
- {
- vlib_buffer_t *p0, *p1, *p2, *p3;
- ip4_header_t *ip0, *ip1, *ip2, *ip3;
- ip_lookup_next_t next0, next1, next2, next3;
- const load_balance_t *lb0, *lb1, *lb2, *lb3;
- ip4_fib_mtrie_t *mtrie0, *mtrie1, *mtrie2, *mtrie3;
- ip4_fib_mtrie_leaf_t leaf0, leaf1, leaf2, leaf3;
- ip4_address_t *dst_addr0, *dst_addr1, *dst_addr2, *dst_addr3;
- u32 pi0, fib_index0, lb_index0;
- u32 pi1, fib_index1, lb_index1;
- u32 pi2, fib_index2, lb_index2;
- u32 pi3, fib_index3, lb_index3;
- flow_hash_config_t flow_hash_config0, flow_hash_config1;
- flow_hash_config_t flow_hash_config2, flow_hash_config3;
- u32 hash_c0, hash_c1, hash_c2, hash_c3;
- const dpo_id_t *dpo0, *dpo1, *dpo2, *dpo3;
-
- /* Prefetch next iteration. */
- {
- vlib_buffer_t *p4, *p5, *p6, *p7;
-
- p4 = vlib_get_buffer (vm, from[4]);
- p5 = vlib_get_buffer (vm, from[5]);
- p6 = vlib_get_buffer (vm, from[6]);
- p7 = vlib_get_buffer (vm, from[7]);
-
- vlib_prefetch_buffer_header (p4, LOAD);
- vlib_prefetch_buffer_header (p5, LOAD);
- vlib_prefetch_buffer_header (p6, LOAD);
- vlib_prefetch_buffer_header (p7, LOAD);
-
- CLIB_PREFETCH (p4->data, sizeof (ip0[0]), LOAD);
- CLIB_PREFETCH (p5->data, sizeof (ip0[0]), LOAD);
- CLIB_PREFETCH (p6->data, sizeof (ip0[0]), LOAD);
- CLIB_PREFETCH (p7->data, sizeof (ip0[0]), LOAD);
- }
-
- pi0 = to_next[0] = from[0];
- pi1 = to_next[1] = from[1];
- pi2 = to_next[2] = from[2];
- pi3 = to_next[3] = from[3];
-
- from += 4;
- to_next += 4;
- n_left_to_next -= 4;
- n_left_from -= 4;
-
- p0 = vlib_get_buffer (vm, pi0);
- p1 = vlib_get_buffer (vm, pi1);
- p2 = vlib_get_buffer (vm, pi2);
- p3 = vlib_get_buffer (vm, pi3);
-
- ip0 = vlib_buffer_get_current (p0);
- ip1 = vlib_buffer_get_current (p1);
- ip2 = vlib_buffer_get_current (p2);
- ip3 = vlib_buffer_get_current (p3);
-
- dst_addr0 = &ip0->dst_address;
- dst_addr1 = &ip1->dst_address;
- dst_addr2 = &ip2->dst_address;
- dst_addr3 = &ip3->dst_address;
-
- fib_index0 =
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p0)->sw_if_index[VLIB_RX]);
- fib_index1 =
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p1)->sw_if_index[VLIB_RX]);
- fib_index2 =
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p2)->sw_if_index[VLIB_RX]);
- fib_index3 =
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p3)->sw_if_index[VLIB_RX]);
- fib_index0 =
- (vnet_buffer (p0)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX];
- fib_index1 =
- (vnet_buffer (p1)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? fib_index1 : vnet_buffer (p1)->sw_if_index[VLIB_TX];
- fib_index2 =
- (vnet_buffer (p2)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? fib_index2 : vnet_buffer (p2)->sw_if_index[VLIB_TX];
- fib_index3 =
- (vnet_buffer (p3)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? fib_index3 : vnet_buffer (p3)->sw_if_index[VLIB_TX];
-
-
- if (!lookup_for_responses_to_locally_received_packets)
- {
- mtrie0 = &ip4_fib_get (fib_index0)->mtrie;
- mtrie1 = &ip4_fib_get (fib_index1)->mtrie;
- mtrie2 = &ip4_fib_get (fib_index2)->mtrie;
- mtrie3 = &ip4_fib_get (fib_index3)->mtrie;
-
- leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, dst_addr0);
- leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, dst_addr1);
- leaf2 = ip4_fib_mtrie_lookup_step_one (mtrie2, dst_addr2);
- leaf3 = ip4_fib_mtrie_lookup_step_one (mtrie3, dst_addr3);
- }
-
- if (!lookup_for_responses_to_locally_received_packets)
- {
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 2);
- leaf2 = ip4_fib_mtrie_lookup_step (mtrie2, leaf2, dst_addr2, 2);
- leaf3 = ip4_fib_mtrie_lookup_step (mtrie3, leaf3, dst_addr3, 2);
- }
-
- if (!lookup_for_responses_to_locally_received_packets)
- {
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 3);
- leaf2 = ip4_fib_mtrie_lookup_step (mtrie2, leaf2, dst_addr2, 3);
- leaf3 = ip4_fib_mtrie_lookup_step (mtrie3, leaf3, dst_addr3, 3);
- }
-
- if (lookup_for_responses_to_locally_received_packets)
- {
- lb_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_RX];
- lb_index1 = vnet_buffer (p1)->ip.adj_index[VLIB_RX];
- lb_index2 = vnet_buffer (p2)->ip.adj_index[VLIB_RX];
- lb_index3 = vnet_buffer (p3)->ip.adj_index[VLIB_RX];
- }
- else
- {
- lb_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
- lb_index1 = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
- lb_index2 = ip4_fib_mtrie_leaf_get_adj_index (leaf2);
- lb_index3 = ip4_fib_mtrie_leaf_get_adj_index (leaf3);
- }
-
- ASSERT (lb_index0 && lb_index1 && lb_index2 && lb_index3);
- lb0 = load_balance_get (lb_index0);
- lb1 = load_balance_get (lb_index1);
- lb2 = load_balance_get (lb_index2);
- lb3 = load_balance_get (lb_index3);
-
- ASSERT (lb0->lb_n_buckets > 0);
- ASSERT (is_pow2 (lb0->lb_n_buckets));
- ASSERT (lb1->lb_n_buckets > 0);
- ASSERT (is_pow2 (lb1->lb_n_buckets));
- ASSERT (lb2->lb_n_buckets > 0);
- ASSERT (is_pow2 (lb2->lb_n_buckets));
- ASSERT (lb3->lb_n_buckets > 0);
- ASSERT (is_pow2 (lb3->lb_n_buckets));
-
- /* Use flow hash to compute multipath adjacency. */
- hash_c0 = vnet_buffer (p0)->ip.flow_hash = 0;
- hash_c1 = vnet_buffer (p1)->ip.flow_hash = 0;
- hash_c2 = vnet_buffer (p2)->ip.flow_hash = 0;
- hash_c3 = vnet_buffer (p3)->ip.flow_hash = 0;
- if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
- {
- flow_hash_config0 = lb0->lb_hash_config;
- hash_c0 = vnet_buffer (p0)->ip.flow_hash =
- ip4_compute_flow_hash (ip0, flow_hash_config0);
- dpo0 =
- load_balance_get_fwd_bucket (lb0,
- (hash_c0 &
- (lb0->lb_n_buckets_minus_1)));
- }
- else
- {
- dpo0 = load_balance_get_bucket_i (lb0, 0);
- }
- if (PREDICT_FALSE (lb1->lb_n_buckets > 1))
- {
- flow_hash_config1 = lb1->lb_hash_config;
- hash_c1 = vnet_buffer (p1)->ip.flow_hash =
- ip4_compute_flow_hash (ip1, flow_hash_config1);
- dpo1 =
- load_balance_get_fwd_bucket (lb1,
- (hash_c1 &
- (lb1->lb_n_buckets_minus_1)));
- }
- else
- {
- dpo1 = load_balance_get_bucket_i (lb1, 0);
- }
- if (PREDICT_FALSE (lb2->lb_n_buckets > 1))
- {
- flow_hash_config2 = lb2->lb_hash_config;
- hash_c2 = vnet_buffer (p2)->ip.flow_hash =
- ip4_compute_flow_hash (ip2, flow_hash_config2);
- dpo2 =
- load_balance_get_fwd_bucket (lb2,
- (hash_c2 &
- (lb2->lb_n_buckets_minus_1)));
- }
- else
- {
- dpo2 = load_balance_get_bucket_i (lb2, 0);
- }
- if (PREDICT_FALSE (lb3->lb_n_buckets > 1))
- {
- flow_hash_config3 = lb3->lb_hash_config;
- hash_c3 = vnet_buffer (p3)->ip.flow_hash =
- ip4_compute_flow_hash (ip3, flow_hash_config3);
- dpo3 =
- load_balance_get_fwd_bucket (lb3,
- (hash_c3 &
- (lb3->lb_n_buckets_minus_1)));
- }
- else
- {
- dpo3 = load_balance_get_bucket_i (lb3, 0);
- }
-
- next0 = dpo0->dpoi_next_node;
- vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
- next1 = dpo1->dpoi_next_node;
- vnet_buffer (p1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index;
- next2 = dpo2->dpoi_next_node;
- vnet_buffer (p2)->ip.adj_index[VLIB_TX] = dpo2->dpoi_index;
- next3 = dpo3->dpoi_next_node;
- vnet_buffer (p3)->ip.adj_index[VLIB_TX] = dpo3->dpoi_index;
-
- vlib_increment_combined_counter
- (cm, thread_index, lb_index0, 1,
- vlib_buffer_length_in_chain (vm, p0));
- vlib_increment_combined_counter
- (cm, thread_index, lb_index1, 1,
- vlib_buffer_length_in_chain (vm, p1));
- vlib_increment_combined_counter
- (cm, thread_index, lb_index2, 1,
- vlib_buffer_length_in_chain (vm, p2));
- vlib_increment_combined_counter
- (cm, thread_index, lb_index3, 1,
- vlib_buffer_length_in_chain (vm, p3));
-
- vlib_validate_buffer_enqueue_x4 (vm, node, next,
- to_next, n_left_to_next,
- pi0, pi1, pi2, pi3,
- next0, next1, next2, next3);
- }
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- vlib_buffer_t *p0;
- ip4_header_t *ip0;
- ip_lookup_next_t next0;
- const load_balance_t *lb0;
- ip4_fib_mtrie_t *mtrie0;
- ip4_fib_mtrie_leaf_t leaf0;
- ip4_address_t *dst_addr0;
- u32 pi0, fib_index0, lbi0;
- flow_hash_config_t flow_hash_config0;
- const dpo_id_t *dpo0;
- u32 hash_c0;
-
- pi0 = from[0];
- to_next[0] = pi0;
-
- p0 = vlib_get_buffer (vm, pi0);
-
- ip0 = vlib_buffer_get_current (p0);
-
- dst_addr0 = &ip0->dst_address;
-
- fib_index0 =
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p0)->sw_if_index[VLIB_RX]);
- fib_index0 =
- (vnet_buffer (p0)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX];
-
- if (!lookup_for_responses_to_locally_received_packets)
- {
- mtrie0 = &ip4_fib_get (fib_index0)->mtrie;
-
- leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, dst_addr0);
- }
-
- if (!lookup_for_responses_to_locally_received_packets)
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2);
-
- if (!lookup_for_responses_to_locally_received_packets)
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3);
-
- if (lookup_for_responses_to_locally_received_packets)
- lbi0 = vnet_buffer (p0)->ip.adj_index[VLIB_RX];
- else
- {
- /* Handle default route. */
- lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
- }
-
- ASSERT (lbi0);
- lb0 = load_balance_get (lbi0);
-
- ASSERT (lb0->lb_n_buckets > 0);
- ASSERT (is_pow2 (lb0->lb_n_buckets));
-
- /* Use flow hash to compute multipath adjacency. */
- hash_c0 = vnet_buffer (p0)->ip.flow_hash = 0;
- if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
- {
- flow_hash_config0 = lb0->lb_hash_config;
-
- hash_c0 = vnet_buffer (p0)->ip.flow_hash =
- ip4_compute_flow_hash (ip0, flow_hash_config0);
- dpo0 =
- load_balance_get_fwd_bucket (lb0,
- (hash_c0 &
- (lb0->lb_n_buckets_minus_1)));
- }
- else
- {
- dpo0 = load_balance_get_bucket_i (lb0, 0);
- }
-
- next0 = dpo0->dpoi_next_node;
- vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
-
- vlib_increment_combined_counter (cm, thread_index, lbi0, 1,
- vlib_buffer_length_in_chain (vm,
- p0));
-
- from += 1;
- to_next += 1;
- n_left_to_next -= 1;
- n_left_from -= 1;
-
- if (PREDICT_FALSE (next0 != next))
- {
- n_left_to_next += 1;
- vlib_put_next_frame (vm, node, next, n_left_to_next);
- next = next0;
- vlib_get_next_frame (vm, node, next, to_next, n_left_to_next);
- to_next[0] = pi0;
- to_next += 1;
- n_left_to_next -= 1;
- }
- }
-
- vlib_put_next_frame (vm, node, next, n_left_to_next);
- }
-
- if (node->flags & VLIB_NODE_FLAG_TRACE)
- ip4_forward_next_trace (vm, node, frame, VLIB_TX);
-
- return frame->n_vectors;
-}
+#include <vnet/ip/ip4_forward.h>
/** @brief IPv4 lookup node.
@node ip4-lookup
if (0 != --im->ip_enabled_by_sw_if_index[sw_if_index])
return;
}
- vnet_feature_enable_disable ("ip4-unicast", "ip4-drop", sw_if_index,
+ vnet_feature_enable_disable ("ip4-unicast", "ip4-not-enabled", sw_if_index,
!is_enable, 0, 0);
- vnet_feature_enable_disable ("ip4-multicast", "ip4-drop",
+ vnet_feature_enable_disable ("ip4-multicast", "ip4-not-enabled",
sw_if_index, !is_enable, 0, 0);
}
.runs_before = VNET_FEATURES ("ip4-lookup"),
};
-VNET_FEATURE_INIT (ip4_drop, static) =
+VNET_FEATURE_INIT (ip4_not_enabled, static) =
{
.arc_name = "ip4-unicast",
- .node_name = "ip4-drop",
+ .node_name = "ip4-not-enabled",
.runs_before = VNET_FEATURES ("ip4-lookup"),
};
.runs_before = VNET_FEATURES ("ip4-mfib-forward-lookup"),
};
-VNET_FEATURE_INIT (ip4_mc_drop, static) =
+VNET_FEATURE_INIT (ip4_mc_not_enabled, static) =
{
.arc_name = "ip4-multicast",
- .node_name = "ip4-drop",
+ .node_name = "ip4-not-enabled",
.runs_before = VNET_FEATURES ("ip4-mfib-forward-lookup"),
};
VNET_FEATURE_ARC_INIT (ip4_output, static) =
{
.arc_name = "ip4-output",
- .start_nodes = VNET_FEATURES ("ip4-rewrite", "ip4-midchain"),
+ .start_nodes = VNET_FEATURES ("ip4-rewrite", "ip4-midchain", "ip4-dvr-dpo"),
.arc_index_ptr = &ip4_main.lookup_main.output_feature_arc_index,
};
{
.arc_name = "ip4-output",
.node_name = "ip4-source-and-port-range-check-tx",
+ .runs_before = VNET_FEATURES ("ip4-outacl"),
+};
+
+VNET_FEATURE_INIT (ip4_outacl, static) =
+{
+ .arc_name = "ip4-output",
+ .node_name = "ip4-outacl",
.runs_before = VNET_FEATURES ("ipsec-output-ip4"),
};
ip4_address_t *address;
vlib_main_t *vm = vlib_get_main ();
+ vnet_sw_interface_update_unnumbered (sw_if_index, ~0, 0);
/* *INDENT-OFF* */
- foreach_ip_interface_address (lm4, ia, sw_if_index, 1 /* honor unnumbered */,
+ foreach_ip_interface_address (lm4, ia, sw_if_index, 0,
({
address = ip_interface_address_get_address (lm4, ia);
ip4_add_del_interface_address(vm, sw_if_index, address, ia->address_length, 1);
/* *INDENT-ON* */
}
- vnet_feature_enable_disable ("ip4-unicast", "ip4-drop", sw_if_index,
+ vnet_feature_enable_disable ("ip4-unicast", "ip4-not-enabled", sw_if_index,
is_add, 0, 0);
- vnet_feature_enable_disable ("ip4-multicast", "ip4-drop", sw_if_index,
- is_add, 0, 0);
+ vnet_feature_enable_disable ("ip4-multicast", "ip4-not-enabled",
+ sw_if_index, is_add, 0, 0);
return /* no error */ 0;
}
sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
sw_if_index1 = vnet_buffer (p1)->sw_if_index[VLIB_RX];
- /* Treat IP frag packets as "experimental" protocol for now
- until support of IP frag reassembly is implemented */
- proto0 = ip4_is_fragment (ip0) ? 0xfe : ip0->protocol;
- proto1 = ip4_is_fragment (ip1) ? 0xfe : ip1->protocol;
+ proto0 = ip0->protocol;
+ proto1 = ip1->protocol;
if (head_of_feature_arc == 0)
goto skip_checks;
vnet_buffer (p0)->l3_hdr_offset = p0->current_data;
sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
- /* Treat IP frag packets as "experimental" protocol for now
- until support of IP frag reassembly is implemented */
- proto0 = ip4_is_fragment (ip0) ? 0xfe : ip0->protocol;
+ proto0 = ip0->protocol;
if (head_of_feature_arc == 0 || p0->flags & VNET_BUFFER_F_IS_NATED)
goto skip_check;
if (adj->lookup_next_index == IP_LOOKUP_NEXT_REWRITE)
{
adj_unlock (ai);
- ai = adj_glean_add_or_lock (FIB_PROTOCOL_IP4, sw_if_index, &nh);
+ ai = adj_glean_add_or_lock (FIB_PROTOCOL_IP4,
+ VNET_LINK_IP4, sw_if_index, &nh);
adj = adj_get (ai);
}
IP4_REWRITE_NEXT_ICMP_ERROR,
} ip4_rewrite_next_t;
+always_inline void
+ip4_mtu_check (vlib_buffer_t * b, u16 buffer_packet_bytes,
+ u16 adj_packet_bytes, bool df, u32 * next, u32 * error)
+{
+ if (buffer_packet_bytes > adj_packet_bytes)
+ {
+ *error = IP4_ERROR_MTU_EXCEEDED;
+ if (df)
+ {
+ icmp4_error_set_vnet_buffer
+ (b, ICMP4_destination_unreachable,
+ ICMP4_destination_unreachable_fragmentation_needed_and_dont_fragment_set,
+ adj_packet_bytes);
+ *next = IP4_REWRITE_NEXT_ICMP_ERROR;
+ }
+ else
+ {
+ /* Add support for fragmentation here */
+ *next = IP4_REWRITE_NEXT_DROP;
+ }
+ }
+}
+
always_inline uword
ip4_rewrite_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
vnet_buffer (p1)->ip.save_rewrite_length = rw_len1;
/* Check MTU of outgoing interface. */
- error0 =
- (vlib_buffer_length_in_chain (vm, p0) >
- adj0[0].
- rewrite_header.max_l3_packet_bytes ? IP4_ERROR_MTU_EXCEEDED :
- error0);
- error1 =
- (vlib_buffer_length_in_chain (vm, p1) >
- adj1[0].
- rewrite_header.max_l3_packet_bytes ? IP4_ERROR_MTU_EXCEEDED :
- error1);
+ ip4_mtu_check (p0, vlib_buffer_length_in_chain (vm, p0),
+ adj0[0].rewrite_header.max_l3_packet_bytes,
+ ip0->flags_and_fragment_offset &
+ clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT),
+ &next0, &error0);
+ ip4_mtu_check (p1, vlib_buffer_length_in_chain (vm, p1),
+ adj1[0].rewrite_header.max_l3_packet_bytes,
+ ip1->flags_and_fragment_offset &
+ clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT),
+ &next1, &error1);
+
+ /* Guess we are only writing on simple Ethernet header. */
+ vnet_rewrite_two_headers (adj0[0], adj1[0],
+ ip0, ip1, sizeof (ethernet_header_t));
if (is_mcast)
{
IP4_ERROR_SAME_INTERFACE : error1);
}
+ p0->error = error_node->errors[error0];
+ p1->error = error_node->errors[error1];
/* Don't adjust the buffer for ttl issue; icmp-error node wants
* to see the IP headerr */
if (PREDICT_TRUE (error0 == IP4_ERROR_NONE))
tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index;
vnet_buffer (p0)->sw_if_index[VLIB_TX] = tx_sw_if_index0;
+ if (is_midchain)
+ {
+ adj0->sub_type.midchain.fixup_func
+ (vm, adj0, p0, adj0->sub_type.midchain.fixup_data);
+ }
+
if (PREDICT_FALSE
(adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES))
vnet_feature_arc_start (lm->output_feature_arc_index,
tx_sw_if_index0, &next0, p0);
+
}
if (PREDICT_TRUE (error1 == IP4_ERROR_NONE))
{
tx_sw_if_index1 = adj1[0].rewrite_header.sw_if_index;
vnet_buffer (p1)->sw_if_index[VLIB_TX] = tx_sw_if_index1;
+ if (is_midchain)
+ {
+ adj1->sub_type.midchain.fixup_func
+ (vm, adj1, p1, adj0->sub_type.midchain.fixup_data);
+ }
+
if (PREDICT_FALSE
(adj1[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES))
vnet_feature_arc_start (lm->output_feature_arc_index,
tx_sw_if_index1, &next1, p1);
}
- /* Guess we are only writing on simple Ethernet header. */
- vnet_rewrite_two_headers (adj0[0], adj1[0],
- ip0, ip1, sizeof (ethernet_header_t));
-
/*
* Bump the per-adjacency counters
*/
vlib_buffer_length_in_chain (vm, p1) + rw_len1);
}
- if (is_midchain)
- {
- adj0->sub_type.midchain.fixup_func (vm, adj0, p0);
- adj1->sub_type.midchain.fixup_func (vm, adj1, p1);
- }
if (is_mcast)
{
/*
/* Guess we are only writing on simple Ethernet header. */
vnet_rewrite_one_header (adj0[0], ip0, sizeof (ethernet_header_t));
+
if (is_mcast)
{
/*
vlib_buffer_length_in_chain (vm, p0) + rw_len0);
/* Check MTU of outgoing interface. */
- error0 = (vlib_buffer_length_in_chain (vm, p0)
- > adj0[0].rewrite_header.max_l3_packet_bytes
- ? IP4_ERROR_MTU_EXCEEDED : error0);
+ ip4_mtu_check (p0, vlib_buffer_length_in_chain (vm, p0),
+ adj0[0].rewrite_header.max_l3_packet_bytes,
+ ip0->flags_and_fragment_offset &
+ clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT),
+ &next0, &error0);
+
if (is_mcast)
{
error0 = ((adj0[0].rewrite_header.sw_if_index ==
if (is_midchain)
{
- adj0->sub_type.midchain.fixup_func (vm, adj0, p0);
+ adj0->sub_type.midchain.fixup_func
+ (vm, adj0, p0, adj0->sub_type.midchain.fixup_data);
}
if (PREDICT_FALSE
<em>Next Indices:</em>
- <code> adj->rewrite_header.next_index </code>
- or @c error-drop
+ or @c ip4-drop
*/
static uword
ip4_rewrite (vlib_main_t * vm,
.n_next_nodes = 2,
.next_nodes = {
- [IP4_REWRITE_NEXT_DROP] = "error-drop",
+ [IP4_REWRITE_NEXT_DROP] = "ip4-drop",
[IP4_REWRITE_NEXT_ICMP_ERROR] = "ip4-icmp-error",
},
};
Code Review / vpp.git / blobdiff