diff options
Diffstat (limited to 'src/plugins/gbp/gbp_classify_node.c')
| -rw-r--r-- | src/plugins/gbp/gbp_classify_node.c | 628 |
1 files changed, 0 insertions, 628 deletions
diff --git a/src/plugins/gbp/gbp_classify_node.c b/src/plugins/gbp/gbp_classify_node.c deleted file mode 100644 index a2058a21284..00000000000 --- a/src/plugins/gbp/gbp_classify_node.c +++ /dev/null @@ -1,628 +0,0 @@ -/* - * gbp.h : Group Based Policy - * - * Copyright (c) 2018 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <plugins/gbp/gbp.h> -#include <plugins/gbp/gbp_classify.h> -#include <plugins/gbp/gbp_policy_dpo.h> -#include <plugins/gbp/gbp_ext_itf.h> -#include <vnet/fib/ip4_fib.h> -#include <vnet/fib/ip6_fib.h> -#include <vnet/dpo/load_balance.h> -#include <vnet/l2/l2_input.h> -#include <vnet/l2/feat_bitmap.h> -#include <vnet/fib/fib_table.h> -#include <vnet/vxlan-gbp/vxlan_gbp_packet.h> -#include <vnet/ethernet/arp_packet.h> - -/** - * per-packet trace data - */ -typedef struct gbp_classify_trace_t_ -{ - /* per-pkt trace data */ - sclass_t sclass; -} gbp_classify_trace_t; - -/* - * determine the SRC EPG form the input port - */ -always_inline uword -gbp_classify_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, - gbp_src_classify_type_t type, dpo_proto_t dproto) -{ - gbp_src_classify_main_t *gscm = &gbp_src_classify_main; - u32 n_left_from, *from, *to_next; - u32 next_index; - - next_index = 0; - n_left_from = frame->n_vectors; - from = vlib_frame_vector_args (frame); - - while (n_left_from > 0) - { - u32 n_left_to_next; - - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 next0, bi0, sw_if_index0; - const gbp_endpoint_t *ge0; - vlib_buffer_t *b0; - sclass_t sclass0; - - 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); - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - vnet_buffer2 (b0)->gbp.flags = VXLAN_GBP_GPFLAGS_NONE; - - if (GBP_SRC_CLASSIFY_NULL == type) - { - sclass0 = SCLASS_INVALID; - next0 = - vnet_l2_feature_next (b0, gscm->l2_input_feat_next[type], - L2INPUT_FEAT_GBP_NULL_CLASSIFY); - } - else - { - if (DPO_PROTO_ETHERNET == dproto) - { - const ethernet_header_t *h0; - - h0 = vlib_buffer_get_current (b0); - next0 = - vnet_l2_feature_next (b0, gscm->l2_input_feat_next[type], - L2INPUT_FEAT_GBP_SRC_CLASSIFY); - ge0 = gbp_endpoint_find_mac (h0->src_address, - vnet_buffer (b0)->l2.bd_index); - } - else if (DPO_PROTO_IP4 == dproto) - { - const ip4_header_t *h0; - - h0 = vlib_buffer_get_current (b0); - - ge0 = gbp_endpoint_find_ip4 - (&h0->src_address, - fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, - sw_if_index0)); - - - /* - * Go straight to looukp, do not pass go, do not collect $200 - */ - next0 = 0; - } - else if (DPO_PROTO_IP6 == dproto) - { - const ip6_header_t *h0; - - h0 = vlib_buffer_get_current (b0); - - ge0 = gbp_endpoint_find_ip6 - (&h0->src_address, - fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP6, - sw_if_index0)); - - - /* - * Go straight to lookup, do not pass go, do not collect $200 - */ - next0 = 0; - } - else - { - ge0 = NULL; - next0 = 0; - ASSERT (0); - } - - if (PREDICT_TRUE (NULL != ge0)) - sclass0 = ge0->ge_fwd.gef_sclass; - else - sclass0 = SCLASS_INVALID; - } - - vnet_buffer2 (b0)->gbp.sclass = sclass0; - - if (PREDICT_FALSE ((b0->flags & VLIB_BUFFER_IS_TRACED))) - { - gbp_classify_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->sclass = sclass0; - } - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi0, next0); - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - return frame->n_vectors; -} - -VLIB_NODE_FN (gbp_src_classify_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return (gbp_classify_inline (vm, node, frame, - GBP_SRC_CLASSIFY_PORT, DPO_PROTO_ETHERNET)); -} - -VLIB_NODE_FN (gbp_null_classify_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return (gbp_classify_inline (vm, node, frame, - GBP_SRC_CLASSIFY_NULL, DPO_PROTO_ETHERNET)); -} - -VLIB_NODE_FN (gbp_ip4_src_classify_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return (gbp_classify_inline (vm, node, frame, - GBP_SRC_CLASSIFY_PORT, DPO_PROTO_IP4)); -} - -VLIB_NODE_FN (gbp_ip6_src_classify_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return (gbp_classify_inline (vm, node, frame, - GBP_SRC_CLASSIFY_PORT, DPO_PROTO_IP6)); -} - - -/* packet trace format function */ -static u8 * -format_gbp_classify_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 *); - gbp_classify_trace_t *t = va_arg (*args, gbp_classify_trace_t *); - - s = format (s, "sclass:%d", t->sclass); - - return s; -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (gbp_null_classify_node) = { - .name = "gbp-null-classify", - .vector_size = sizeof (u32), - .format_trace = format_gbp_classify_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = 0, - .n_next_nodes = 0, -}; - -VLIB_REGISTER_NODE (gbp_src_classify_node) = { - .name = "gbp-src-classify", - .vector_size = sizeof (u32), - .format_trace = format_gbp_classify_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = 0, - .n_next_nodes = 0, -}; - -VLIB_REGISTER_NODE (gbp_ip4_src_classify_node) = { - .name = "ip4-gbp-src-classify", - .vector_size = sizeof (u32), - .format_trace = format_gbp_classify_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = 0, - .n_next_nodes = 1, - .next_nodes = { - [0] = "ip4-lookup" - }, -}; - -VLIB_REGISTER_NODE (gbp_ip6_src_classify_node) = { - .name = "ip6-gbp-src-classify", - .vector_size = sizeof (u32), - .format_trace = format_gbp_classify_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = 0, - .n_next_nodes = 1, - .next_nodes = { - [0] = "ip6-lookup" - }, -}; - -VNET_FEATURE_INIT (gbp_ip4_src_classify_feat_node, static) = -{ - .arc_name = "ip4-unicast", - .node_name = "ip4-gbp-src-classify", - .runs_before = VNET_FEATURES ("nat44-out2in"), -}; -VNET_FEATURE_INIT (gbp_ip6_src_classify_feat_node, static) = -{ - .arc_name = "ip6-unicast", - .node_name = "ip6-gbp-src-classify", - .runs_before = VNET_FEATURES ("nat66-out2in"), -}; - -/* *INDENT-ON* */ - -typedef enum gbp_lpm_classify_next_t_ -{ - GPB_LPM_CLASSIFY_DROP, -} gbp_lpm_classify_next_t; - -/** - * per-packet trace data - */ -typedef struct gbp_lpm_classify_trace_t_ -{ - sclass_t sclass; - index_t lbi; - ip46_address_t src; -} gbp_lpm_classify_trace_t; - -/* packet trace format function */ -static u8 * -format_gbp_lpm_classify_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 *); - gbp_lpm_classify_trace_t *t = va_arg (*args, gbp_lpm_classify_trace_t *); - - s = format (s, "sclass:%d lb:%d src:%U", - t->sclass, t->lbi, format_ip46_address, &t->src, IP46_TYPE_ANY); - - return s; -} - -enum gbp_lpm_type -{ - GBP_LPM_RECIRC, - GBP_LPM_EPG, - GBP_LPM_ANON -}; - -/* - * Determine the SRC EPG from a LPM - */ -always_inline uword -gbp_lpm_classify_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, - const dpo_proto_t dproto, - const enum gbp_lpm_type type) -{ - gbp_src_classify_main_t *gscm = &gbp_src_classify_main; - u32 n_left_from, *from, *to_next; - u32 next_index; - - next_index = 0; - n_left_from = frame->n_vectors; - from = vlib_frame_vector_args (frame); - - while (n_left_from > 0) - { - u32 n_left_to_next; - - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0, sw_if_index0, fib_index0, lbi0; - const gbp_endpoint_t *ge0, *ge_lpm0; - gbp_lpm_classify_next_t next0; - const ethernet_header_t *eh0; - const gbp_policy_dpo_t *gpd0; - const ip4_address_t *ip4_0; - const ip6_address_t *ip6_0; - const gbp_recirc_t *gr0; - vlib_buffer_t *b0; - sclass_t sclass0; - - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - ip4_0 = NULL; - ip6_0 = NULL; - next0 = GPB_LPM_CLASSIFY_DROP; - - lbi0 = ~0; - eh0 = NULL; - b0 = vlib_get_buffer (vm, bi0); - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - vnet_buffer2 (b0)->gbp.flags = VXLAN_GBP_GPFLAGS_NONE; - - if (DPO_PROTO_IP4 == dproto) - ip4_0 = - &((ip4_header_t *) vlib_buffer_get_current (b0))->src_address; - else if (DPO_PROTO_IP6 == dproto) - ip6_0 = - &((ip6_header_t *) vlib_buffer_get_current (b0))->src_address; - else if (DPO_PROTO_ETHERNET == dproto) - { - eh0 = vlib_buffer_get_current (b0); - gbp_classify_get_ip_address (eh0, &ip4_0, &ip6_0, - GBP_CLASSIFY_GET_IP_SRC); - } - - if (GBP_LPM_RECIRC == type) - { - gr0 = gbp_recirc_get (sw_if_index0); - fib_index0 = gr0->gr_fib_index[dproto]; - ge0 = NULL; - - vnet_feature_next (&next0, b0); - } - else - { - if (NULL == eh0) - { - /* packet should be l2 */ - sclass0 = SCLASS_INVALID; - goto trace; - } - - if (GBP_LPM_ANON == type) - { - /* - * anonymous LPM classification: only honour LPM as no EP - * were programmed - */ - gbp_ext_itf_t *gei = gbp_ext_itf_get (sw_if_index0); - if (ip4_0) - fib_index0 = gei->gx_fib_index[DPO_PROTO_IP4]; - else if (ip6_0) - fib_index0 = gei->gx_fib_index[DPO_PROTO_IP6]; - else - { - /* not IP so no LPM classify possible */ - sclass0 = SCLASS_INVALID; - next0 = GPB_LPM_CLASSIFY_DROP; - goto trace; - } - next0 = vnet_l2_feature_next - (b0, gscm->l2_input_feat_next[GBP_SRC_CLASSIFY_LPM_ANON], - L2INPUT_FEAT_GBP_LPM_ANON_CLASSIFY); - } - else - { - /* - * not an anonymous LPM classification: check it comes from - * an EP, and use EP RD info - */ - ge0 = gbp_endpoint_find_mac (eh0->src_address, - vnet_buffer (b0)->l2.bd_index); - - if (NULL == ge0) - { - /* packet must have come from an EP's mac */ - sclass0 = SCLASS_INVALID; - goto trace; - } - - fib_index0 = ge0->ge_fwd.gef_fib_index; - - if (~0 == fib_index0) - { - sclass0 = SCLASS_INVALID; - goto trace; - } - - if (ip4_0) - { - ge_lpm0 = gbp_endpoint_find_ip4 (ip4_0, fib_index0); - } - else if (ip6_0) - { - ge_lpm0 = gbp_endpoint_find_ip6 (ip6_0, fib_index0); - } - else - { - ge_lpm0 = NULL; - } - - next0 = vnet_l2_feature_next - (b0, gscm->l2_input_feat_next[GBP_SRC_CLASSIFY_LPM], - L2INPUT_FEAT_GBP_LPM_CLASSIFY); - - /* - * if we found the EP by IP lookup, it must be from the EP - * not a network behind it - */ - if (NULL != ge_lpm0) - { - if (PREDICT_FALSE (ge0 != ge_lpm0)) - { - /* an EP spoofing another EP */ - sclass0 = SCLASS_INVALID; - next0 = GPB_LPM_CLASSIFY_DROP; - } - else - { - sclass0 = ge0->ge_fwd.gef_sclass; - } - goto trace; - } - } - } - - gpd0 = gbp_classify_get_gpd (ip4_0, ip6_0, fib_index0); - if (0 == gpd0) - { - /* could not classify => drop */ - sclass0 = SCLASS_INVALID; - next0 = GPB_LPM_CLASSIFY_DROP; - goto trace; - } - - sclass0 = gpd0->gpd_sclass; - - /* all packets from an external network should not be learned by the - * reciever. so set the Do-not-learn bit here */ - vnet_buffer2 (b0)->gbp.flags = VXLAN_GBP_GPFLAGS_D; - - trace: - vnet_buffer2 (b0)->gbp.sclass = sclass0; - - if (PREDICT_FALSE ((b0->flags & VLIB_BUFFER_IS_TRACED))) - { - gbp_lpm_classify_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->sclass = sclass0; - t->lbi = lbi0; - if (ip4_0) - t->src.ip4 = *ip4_0; - if (ip6_0) - t->src.ip6 = *ip6_0; - } - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi0, next0); - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - return frame->n_vectors; -} - -VLIB_NODE_FN (gbp_ip4_lpm_classify_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return (gbp_lpm_classify_inline - (vm, node, frame, DPO_PROTO_IP4, GBP_LPM_RECIRC)); -} - -VLIB_NODE_FN (gbp_ip6_lpm_classify_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return (gbp_lpm_classify_inline - (vm, node, frame, DPO_PROTO_IP6, GBP_LPM_RECIRC)); -} - -VLIB_NODE_FN (gbp_l2_lpm_classify_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return (gbp_lpm_classify_inline - (vm, node, frame, DPO_PROTO_ETHERNET, GBP_LPM_EPG)); -} - -VLIB_NODE_FN (gbp_l2_lpm_anon_classify_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return (gbp_lpm_classify_inline - (vm, node, frame, DPO_PROTO_ETHERNET, GBP_LPM_ANON)); -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (gbp_ip4_lpm_classify_node) = { - .name = "ip4-gbp-lpm-classify", - .vector_size = sizeof (u32), - .format_trace = format_gbp_lpm_classify_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = 0, - .n_next_nodes = 1, - .next_nodes = { - [GPB_LPM_CLASSIFY_DROP] = "ip4-drop" - }, -}; - -VLIB_REGISTER_NODE (gbp_ip6_lpm_classify_node) = { - .name = "ip6-gbp-lpm-classify", - .vector_size = sizeof (u32), - .format_trace = format_gbp_lpm_classify_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = 0, - .n_next_nodes = 1, - .next_nodes = { - [GPB_LPM_CLASSIFY_DROP] = "ip6-drop" - }, -}; - -VLIB_REGISTER_NODE (gbp_l2_lpm_classify_node) = { - .name = "l2-gbp-lpm-classify", - .vector_size = sizeof (u32), - .format_trace = format_gbp_lpm_classify_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = 0, - .n_next_nodes = 1, - .next_nodes = { - [GPB_LPM_CLASSIFY_DROP] = "error-drop" - }, -}; - -VLIB_REGISTER_NODE (gbp_l2_lpm_anon_classify_node) = { - .name = "l2-gbp-lpm-anon-classify", - .vector_size = sizeof (u32), - .format_trace = format_gbp_lpm_classify_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = 0, - .n_next_nodes = 1, - .next_nodes = { - [GPB_LPM_CLASSIFY_DROP] = "error-drop" - }, -}; - -VNET_FEATURE_INIT (gbp_ip4_lpm_classify_feat_node, static) = -{ - .arc_name = "ip4-unicast", - .node_name = "ip4-gbp-lpm-classify", - .runs_before = VNET_FEATURES ("nat44-out2in"), -}; -VNET_FEATURE_INIT (gbp_ip6_lpm_classify_feat_node, static) = -{ - .arc_name = "ip6-unicast", - .node_name = "ip6-gbp-lpm-classify", - .runs_before = VNET_FEATURES ("nat66-out2in"), -}; - -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |