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authorDave Barach <dave@barachs.net>2020-07-14 18:30:05 -0400
committerDamjan Marion <dmarion@me.com>2020-07-16 21:39:23 +0000
commitac0326fc5ae7ac4a8126bbc2f496a92fcfe4755e (patch)
tree3bb8d7fac43b165ccd6dd106b597fd733e5b28b8 /src/plugins/adl/node.c
parent9a0f2a5e7f678de58807fd49d47deec367656715 (diff)
adl: move allow/deny list function to plugin
Provide binary API compatibility support for the "cop" APIs until vpp 21.01. Change the deprecation date in map.api to vpp 21.01. Type: refactor Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: I0e60d96de4ae9ae4448f134cf257934126f3b760
Diffstat (limited to 'src/plugins/adl/node.c')
-rw-r--r--src/plugins/adl/node.c309
1 files changed, 309 insertions, 0 deletions
diff --git a/src/plugins/adl/node.c b/src/plugins/adl/node.c
new file mode 100644
index 00000000000..9ee991c4c6a
--- /dev/null
+++ b/src/plugins/adl/node.c
@@ -0,0 +1,309 @@
+/*
+ * Copyright (c) 2016,2020 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/adl/adl.h>
+#include <vnet/pg/pg.h>
+
+typedef struct {
+ u32 next_index;
+ u32 sw_if_index;
+} adl_input_trace_t;
+
+/* packet trace format function */
+static u8 * format_adl_input_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 *);
+ adl_input_trace_t * t = va_arg (*args, adl_input_trace_t *);
+
+ s = format (s, "ADL_INPUT: sw_if_index %d, next index %d",
+ t->sw_if_index, t->next_index);
+ return s;
+}
+
+#define foreach_adl_input_error \
+_(PROCESSED, "Allow/Deny packets processed")
+
+typedef enum {
+#define _(sym,str) ADL_INPUT_ERROR_##sym,
+ foreach_adl_input_error
+#undef _
+ ADL_INPUT_N_ERROR,
+} adl_input_error_t;
+
+static char * adl_input_error_strings[] = {
+#define _(sym,string) string,
+ foreach_adl_input_error
+#undef _
+};
+
+VLIB_NODE_FN (adl_input_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, * from, * to_next;
+ adl_feature_type_t next_index;
+ adl_main_t *am = &adl_main;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ 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 >= 4 && n_left_to_next >= 2)
+ {
+ u32 bi0, bi1;
+ vlib_buffer_t * b0, * b1;
+ u32 next0, next1;
+ u32 sw_if_index0, sw_if_index1;
+ ethernet_header_t * en0, * en1;
+ adl_config_main_t * ccm0, * ccm1;
+ u32 advance0, advance1;
+ int proto0, proto1;
+
+ /* 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, CLIB_CACHE_LINE_BYTES, STORE);
+ CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
+ }
+
+ /* speculatively enqueue b0 and b1 to the current next frame */
+ to_next[0] = bi0 = from[0];
+ to_next[1] = bi1 = from[1];
+ from += 2;
+ to_next += 2;
+ n_left_from -= 2;
+ n_left_to_next -= 2;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+
+ en0 = vlib_buffer_get_current (b0);
+ en1 = vlib_buffer_get_current (b1);
+
+ sw_if_index0 = adl_buffer(b0)->sw_if_index[VLIB_RX];
+ sw_if_index1 = adl_buffer(b1)->sw_if_index[VLIB_RX];
+
+ proto0 = VNET_ADL_DEFAULT;
+ proto1 = VNET_ADL_DEFAULT;
+ advance0 = 0;
+ advance1 = 0;
+
+ if (en0->type == clib_host_to_net_u16(ETHERNET_TYPE_IP4))
+ {
+ proto0 = VNET_ADL_IP4;
+ advance0 = sizeof(ethernet_header_t);
+ }
+ else if (en0->type == clib_host_to_net_u16(ETHERNET_TYPE_IP6))
+ {
+ proto0 = VNET_ADL_IP6;
+ advance0 = sizeof(ethernet_header_t);
+ }
+
+ if (en1->type == clib_host_to_net_u16(ETHERNET_TYPE_IP4))
+ {
+ proto1 = VNET_ADL_IP4;
+ advance1 = sizeof(ethernet_header_t);
+ }
+ else if (en1->type == clib_host_to_net_u16(ETHERNET_TYPE_IP6))
+ {
+ proto1 = VNET_ADL_IP6;
+ advance1 = sizeof(ethernet_header_t);
+ }
+
+ ccm0 = am->adl_config_mains + proto0;
+ ccm1 = am->adl_config_mains + proto1;
+ adl_buffer(b0)->adl.current_config_index =
+ ccm0->config_index_by_sw_if_index [sw_if_index0];
+
+ adl_buffer(b1)->adl.current_config_index =
+ ccm1->config_index_by_sw_if_index [sw_if_index1];
+
+ vlib_buffer_advance (b0, advance0);
+ vlib_buffer_advance (b1, advance1);
+
+ vnet_get_config_data (&ccm0->config_main,
+ &adl_buffer(b0)->adl.current_config_index,
+ &next0, 0 /* bytes of config data */);
+
+ vnet_get_config_data (&ccm1->config_main,
+ &adl_buffer(b1)->adl.current_config_index,
+ &next1, 0 /* bytes of config data */);
+
+ if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ adl_input_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ }
+
+ if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b1->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ adl_input_trace_t *t =
+ vlib_add_trace (vm, node, b1, sizeof (*t));
+ t->sw_if_index = sw_if_index1;
+ t->next_index = next1;
+ }
+ /* verify speculative enqueues, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, bi1, next0, next1);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t * b0;
+ u32 next0;
+ u32 sw_if_index0;
+ ethernet_header_t *en0;
+ adl_config_main_t *ccm0;
+ u32 advance0;
+ int proto0;
+
+ /* speculatively enqueue b0 to the current next frame */
+ 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);
+
+ /*
+ * Direct from the driver, we should be at offset 0
+ * aka at &b0->data[0]
+ */
+ ASSERT (b0->current_data == 0);
+
+ en0 = vlib_buffer_get_current (b0);
+
+ sw_if_index0 = adl_buffer(b0)->sw_if_index[VLIB_RX];
+
+ proto0 = VNET_ADL_DEFAULT;
+ advance0 = 0;
+
+ if (en0->type == clib_host_to_net_u16(ETHERNET_TYPE_IP4))
+ {
+ proto0 = VNET_ADL_IP4;
+ advance0 = sizeof(ethernet_header_t);
+ }
+ else if (en0->type == clib_host_to_net_u16(ETHERNET_TYPE_IP6))
+ {
+ proto0 = VNET_ADL_IP6;
+ advance0 = sizeof(ethernet_header_t);
+ }
+
+ ccm0 = am->adl_config_mains + proto0;
+ adl_buffer(b0)->adl.current_config_index =
+ ccm0->config_index_by_sw_if_index [sw_if_index0];
+
+ vlib_buffer_advance (b0, advance0);
+
+ vnet_get_config_data (&ccm0->config_main,
+ &adl_buffer(b0)->adl.current_config_index,
+ &next0, 0 /* bytes of config data */);
+
+ if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ adl_input_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ }
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ 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);
+ }
+ vlib_node_increment_counter (vm, adl_input_node.index,
+ ADL_INPUT_ERROR_PROCESSED, frame->n_vectors);
+ return frame->n_vectors;
+}
+
+VLIB_REGISTER_NODE (adl_input_node) = {
+ .name = "adl-input",
+ .vector_size = sizeof (u32),
+ .format_trace = format_adl_input_trace,
+ .unformat_buffer = unformat_ethernet_header,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(adl_input_error_strings),
+ .error_strings = adl_input_error_strings,
+
+ .n_next_nodes = ADL_RX_N_FEATURES,
+
+ /* edit / add dispositions here */
+ .next_nodes = {
+ [IP4_RX_ADL_ALLOWLIST] = "ip4-adl-allowlist",
+ [IP6_RX_ADL_ALLOWLIST] = "ip6-adl-allowlist",
+ [DEFAULT_RX_ADL_ALLOWLIST] = "default-adl-allowlist",
+ [IP4_RX_ADL_INPUT] = "ip4-input",
+ [IP6_RX_ADL_INPUT] = "ip6-input",
+ [DEFAULT_RX_ADL_INPUT] = "ethernet-input",
+ [RX_ADL_DROP] = "error-drop",
+ },
+};
+
+#define foreach_adl_stub \
+_(default-adl-allowlist, default_adl_allowlist)
+
+#define _(n,f) \
+ \
+static uword \
+f##_node_fn (vlib_main_t * vm, \
+ vlib_node_runtime_t * node, \
+ vlib_frame_t * frame) \
+{ \
+ clib_warning ("BUG: stub function called"); \
+ return 0; \
+} \
+ \
+VLIB_REGISTER_NODE (f##_input_node) = { \
+ .function = f##_node_fn, \
+ .name = #n, \
+ .vector_size = sizeof (u32), \
+ .type = VLIB_NODE_TYPE_INTERNAL, \
+ \
+ .n_errors = 0, \
+ .error_strings = 0, \
+ \
+ .n_next_nodes = 0, \
+};
+
+foreach_adl_stub;