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test_tables.cpp
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/* Copyright 2013-present Barefoot Networks, Inc.
*
* 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.
*/
/*
* Antonin Bas ([email protected])
*
*/
#include <gtest/gtest.h>
#include <bm/bm_sim/tables.h>
#include <atomic>
#include <memory>
#include <random>
#include <thread>
#include <future>
#include <limits>
#include <string>
#include <vector>
#include <set>
using namespace bm;
using testing::Types;
using std::string;
using std::to_string;
using std::chrono::milliseconds;
using std::this_thread::sleep_until;
using std::this_thread::sleep_for;
using MUExact = MatchUnitExact<ActionEntry>;
using MULPM = MatchUnitLPM<ActionEntry>;
using MUTernary = MatchUnitTernary<ActionEntry>;
using MURange = MatchUnitRange<ActionEntry>;
namespace {
// used for hit / miss next node selection tests (NextNodeHitMiss)
struct DummyNode: public ControlFlowNode {
DummyNode()
: ControlFlowNode("", 0) { }
const ControlFlowNode *operator()(Packet *) const { return nullptr; }
};
template <typename MUType>
struct match_type_test { };
template <>
struct match_type_test<MUExact> {
static constexpr MatchKeyParam::Type type = MatchKeyParam::Type::EXACT;
};
template <>
struct match_type_test<MULPM> {
static constexpr MatchKeyParam::Type type = MatchKeyParam::Type::LPM;
};
template <>
struct match_type_test<MUTernary> {
static constexpr MatchKeyParam::Type type = MatchKeyParam::Type::TERNARY;
};
template <>
struct match_type_test<MURange> {
static constexpr MatchKeyParam::Type type = MatchKeyParam::Type::RANGE;
};
LookupStructureFactory lookup_factory;
} // namespace
template <typename MUType>
class TableSizeTwo : public ::testing::Test {
protected:
static constexpr size_t t_size = 2u;
static constexpr int default_priority = 7;
PHVFactory phv_factory;
MatchKeyBuilder key_builder;
std::unique_ptr<MatchTable> table;
MatchKeyBuilder key_builder_w_valid;
std::unique_ptr<MatchTable> table_w_valid;
HeaderType testHeaderType;
header_id_t testHeader1{0}, testHeader2{1};
p4object_id_t action_id{0}, action_id_1{1};
ActionFn action_fn, action_fn_1;
std::unique_ptr<PHVSourceIface> phv_source{nullptr};
DummyNode node_miss_default{};
TableSizeTwo()
: testHeaderType("test_t", 0),
action_fn("action", action_id, 0 /* no param */),
action_fn_1("action_1", action_id_1, 1 /* 1 param */),
phv_source(PHVSourceIface::make_phv_source()) {
testHeaderType.push_back_field("f16", 16);
testHeaderType.push_back_field("f48", 48);
phv_factory.push_back_header("test1", testHeader1, testHeaderType);
phv_factory.push_back_header("test2", testHeader2, testHeaderType);
key_builder.push_back_field(testHeader1, 0, 16,
match_type_test<MUType>::type);
key_builder_w_valid.push_back_field(testHeader1, 0, 16,
match_type_test<MUType>::type);
key_builder_w_valid.push_back_valid_header(testHeader2);
std::unique_ptr<MUType> match_unit;
// true enables counters
match_unit = std::unique_ptr<MUType>(
new MUType(t_size, key_builder, &lookup_factory));
table = std::unique_ptr<MatchTable>(
new MatchTable("test_table", 0, std::move(match_unit), true));
table->set_next_node(action_id, nullptr);
table->set_next_node(action_id_1, nullptr);
table->set_next_node_miss_default(&node_miss_default);
match_unit = std::unique_ptr<MUType>(
new MUType(t_size, key_builder_w_valid, &lookup_factory));
table_w_valid = std::unique_ptr<MatchTable>(
new MatchTable("test_table", 0, std::move(match_unit)));
table_w_valid->set_next_node(action_id, nullptr);
table_w_valid->set_next_node(action_id_1, nullptr);
table_w_valid->set_next_node_miss_default(&node_miss_default);
}
std::vector<MatchKeyParam> make_match_key(const std::string &key);
MatchErrorCode add_entry(const std::string &key,
entry_handle_t *handle) {
auto match_key = make_match_key(key);
return table->add_entry(match_key, &action_fn, ActionData(), handle,
default_priority);
}
MatchErrorCode add_entry_w_valid(const std::string &key,
bool valid,
entry_handle_t *handle);
Packet get_pkt(int length) {
// dummy packet, won't be parsed
Packet packet = Packet::make_new(
length, PacketBuffer(length * 2), phv_source.get());
packet.get_phv()->get_header(testHeader1).mark_valid();
packet.get_phv()->get_header(testHeader2).mark_valid();
// return std::move(packet);
// enable NVRO
return packet;
}
const ActionEntry &lookup(const Packet &pkt, bool *hit,
entry_handle_t *handle) {
const ControlFlowNode *next_node;
(void)next_node;
return table->lookup(pkt, hit, handle, &next_node);
}
virtual void SetUp() {
phv_source->set_phv_factory(0, &phv_factory);
}
// virtual void TearDown() { }
};
template <>
std::vector<MatchKeyParam>
TableSizeTwo<MUExact>::make_match_key(const std::string &key) {
std::vector<MatchKeyParam> match_key;
match_key.emplace_back(MatchKeyParam::Type::EXACT, key);
return match_key;
}
template<>
std::vector<MatchKeyParam>
TableSizeTwo<MULPM>::make_match_key(const std::string &key) {
std::vector<MatchKeyParam> match_key;
int prefix_length = 16;
match_key.emplace_back(MatchKeyParam::Type::LPM, key, prefix_length);
return match_key;
}
template<>
std::vector<MatchKeyParam>
TableSizeTwo<MUTernary>::make_match_key(const std::string &key) {
std::vector<MatchKeyParam> match_key;
std::string mask = "\xff\xff";
match_key.emplace_back(MatchKeyParam::Type::TERNARY, key, std::move(mask));
return match_key;
}
template<>
std::vector<MatchKeyParam>
TableSizeTwo<MURange>::make_match_key(const std::string &key) {
std::vector<MatchKeyParam> match_key;
Data start(key.data(), key.size());
Data end;
// we create a range with 5 values
end.add(start, Data(4));
match_key.emplace_back(MatchKeyParam::Type::RANGE, key, end.get_string());
return match_key;
}
template<>
MatchErrorCode
TableSizeTwo<MUExact>::add_entry_w_valid(const std::string &key,
bool valid,
entry_handle_t *handle) {
ActionData action_data;
std::vector<MatchKeyParam> match_key;
match_key.emplace_back(MatchKeyParam::Type::EXACT, key);
// I'm putting the valid match in second position on purpose
match_key.emplace_back(MatchKeyParam::Type::VALID, valid ? "\x01" : "\x00");
return table_w_valid->add_entry(match_key, &action_fn, action_data, handle);
}
template<>
MatchErrorCode
TableSizeTwo<MULPM>::add_entry_w_valid(const std::string &key,
bool valid,
entry_handle_t *handle) {
ActionData action_data;
std::vector<MatchKeyParam> match_key;
int prefix_length = 16;
match_key.emplace_back(MatchKeyParam::Type::LPM, key, prefix_length);
match_key.emplace_back(MatchKeyParam::Type::VALID, valid ? "\x01" : "\x00");
return table_w_valid->add_entry(match_key, &action_fn, action_data, handle);
}
template<>
MatchErrorCode
TableSizeTwo<MUTernary>::add_entry_w_valid(const std::string &key,
bool valid,
entry_handle_t *handle) {
ActionData action_data;
std::vector<MatchKeyParam> match_key;
std::string mask = "\xff\xff";
int priority = 1;
match_key.emplace_back(MatchKeyParam::Type::TERNARY, key, std::move(mask));
match_key.emplace_back(MatchKeyParam::Type::VALID, valid ? "\x01" : "\x00");
return table_w_valid->add_entry(match_key, &action_fn, action_data,
handle, priority);
}
template<>
MatchErrorCode
TableSizeTwo<MURange>::add_entry_w_valid(const std::string &key,
bool valid,
entry_handle_t *handle) {
ActionData action_data;
std::vector<MatchKeyParam> match_key;
Data start(key.data(), key.size());
Data end;
// we create a range with 5 values
end.add(start, Data(4));
int priority = 1;
match_key.emplace_back(MatchKeyParam::Type::RANGE, key, end.get_string());
match_key.emplace_back(MatchKeyParam::Type::VALID, valid ? "\x01" : "\x00");
return table_w_valid->add_entry(match_key, &action_fn, action_data,
handle, priority);
}
using MUTypes = Types<MUExact,
MULPM,
MUTernary,
MURange>;
TYPED_TEST_SUITE(TableSizeTwo, MUTypes);
TYPED_TEST(TableSizeTwo, AddEntry) {
std::string key_1 = "\xaa\xaa";
std::string key_2 = "\xbb\xbb";
std::string key_3 = "\xcc\xcc";
entry_handle_t handle;
MatchErrorCode rc;
rc = this->add_entry(key_1, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_EQ(1u, this->table->get_num_entries());
rc = this->add_entry(key_1, &handle);
ASSERT_EQ(MatchErrorCode::DUPLICATE_ENTRY, rc);
ASSERT_EQ(1u, this->table->get_num_entries());
rc = this->add_entry(key_2, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_EQ(2u, this->table->get_num_entries());
rc = this->add_entry(key_3, &handle);
ASSERT_EQ(MatchErrorCode::TABLE_FULL, rc);
ASSERT_EQ(2u, this->table->get_num_entries());
}
TYPED_TEST(TableSizeTwo, IsValidHandle) {
std::string key_ = "\xaa\xaa";
entry_handle_t handle_1 = 0;
MatchErrorCode rc;
ASSERT_FALSE(this->table->is_valid_handle(handle_1));
rc = this->add_entry(key_, &handle_1);
ASSERT_EQ(rc, MatchErrorCode::SUCCESS);
ASSERT_TRUE(this->table->is_valid_handle(handle_1));
}
TYPED_TEST(TableSizeTwo, DeleteEntry) {
std::string key_ = "\xaa\xaa";
ByteContainer key("0xaaaa");
entry_handle_t handle;
MatchErrorCode rc;
rc = this->add_entry(key_, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
rc = this->table->delete_entry(handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_EQ(0u, this->table->get_num_entries());
rc = this->table->delete_entry(handle);
ASSERT_EQ(MatchErrorCode::INVALID_HANDLE, rc);
rc = this->add_entry(key_, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
}
TYPED_TEST(TableSizeTwo, DeleteEntryHandleUpdate) {
std::string key_ = "\xaa\xaa";
ByteContainer key("0xaaaa");
entry_handle_t handle_1, handle_2;
MatchErrorCode rc;
rc = this->add_entry(key_, &handle_1);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
rc = this->table->delete_entry(handle_1);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_EQ(0u, this->table->get_num_entries());
rc = this->add_entry(key_, &handle_2);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_NE(handle_1, handle_2);
rc = this->table->delete_entry(handle_1);
ASSERT_EQ(MatchErrorCode::EXPIRED_HANDLE, rc);
}
// This test was added for this issue:
// https://github.com/p4lang/behavioral-model/issues/549.
// Removing and entry increments the version field; the handle's version wraps
// around, but the entry's did not.
TYPED_TEST(TableSizeTwo, HandleVersionWrapAround) {
std::string key_ = "\xaa\xaa";
ByteContainer key("0xaaaa");
entry_handle_t handle;
MatchErrorCode rc;
for (unsigned int i = 0; i < 257; ++i) {
rc = this->add_entry(key_, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
rc = this->table->delete_entry(handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
}
}
TYPED_TEST(TableSizeTwo, LookupEntry) {
std::string key_ = "\x0a\xba";
ByteContainer key("0x0aba");
entry_handle_t handle;
MatchErrorCode rc;
entry_handle_t lookup_handle;
bool hit;
Packet pkt = this->get_pkt(64);
Field &f = pkt.get_phv()->get_field(this->testHeader1, 0);
rc = this->add_entry(key_, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
f.set("0xaba");
this->lookup(pkt, &hit, &lookup_handle);
ASSERT_TRUE(hit);
// has to be large enough for range test
f.set("0xcba");
this->lookup(pkt, &hit, &lookup_handle);
ASSERT_FALSE(hit);
rc = this->table->delete_entry(handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
f.set("0xaba");
this->lookup(pkt, &hit, &lookup_handle);
ASSERT_FALSE(hit);
}
// This test was added after a bug was found in entry management for Ternary and
// Range tables: when adding 2 entries to the table, then removing the first
// added; we would observe an error when sending a packet matching the second
// entry added only (bmv2 would report a table hit instead of a miss, with a
// corrupt entry handle).
TYPED_TEST(TableSizeTwo, DeleteEntry2) {
std::string key_ = "\xaa\xaa";
std::string bad_key_ = "\xbb\xbb";
ByteContainer key("0xaaaa");
entry_handle_t handle_1, handle_2, lookup_handle;
MatchErrorCode rc;
bool hit;
auto pkt = this->get_pkt(64);
auto &f = pkt.get_phv()->get_field(this->testHeader1, 0);
f.set(key);
rc = this->add_entry(bad_key_, &handle_1);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
this->lookup(pkt, &hit, &lookup_handle);
ASSERT_FALSE(hit);
rc = this->add_entry(key_, &handle_2);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
this->lookup(pkt, &hit, &lookup_handle);
ASSERT_TRUE(hit);
ASSERT_EQ(handle_2, lookup_handle);
rc = this->table->delete_entry(handle_1);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
this->lookup(pkt, &hit, &lookup_handle);
ASSERT_TRUE(hit);
ASSERT_EQ(handle_2, lookup_handle);
rc = this->table->delete_entry(handle_2);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
this->lookup(pkt, &hit, &lookup_handle);
ASSERT_FALSE(hit);
}
TYPED_TEST(TableSizeTwo, PacketEntryIndex) {
std::string key = "\x0a\xba";
entry_handle_t handle;
MatchErrorCode rc;
Packet pkt = this->get_pkt(64);
Field &f = pkt.get_phv()->get_field(this->testHeader1, 0);
rc = this->add_entry(key, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
const auto handle_index_mask = static_cast<entry_handle_t>(0x00ffffff);
ASSERT_EQ(Packet::INVALID_ENTRY_INDEX, pkt.get_entry_index());
// table hit
f.set("0xaba");
ASSERT_EQ(nullptr, this->table->apply_action(&pkt));
ASSERT_EQ(handle_index_mask & handle, pkt.get_entry_index());
rc = this->table->delete_entry(handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
// table miss
ASSERT_EQ(&this->node_miss_default, this->table->apply_action(&pkt));
ASSERT_EQ(Packet::INVALID_ENTRY_INDEX, pkt.get_entry_index());
}
TYPED_TEST(TableSizeTwo, NextNodeHitMiss) {
std::string key = "\x0a\xba";
entry_handle_t handle;
MatchErrorCode rc;
Packet pkt = this->get_pkt(64);
Field &f = pkt.get_phv()->get_field(this->testHeader1, 0);
// before even adding entry
// miss, next node is default one (as per the P4 program)
f.set("0xaba");
ASSERT_EQ(&this->node_miss_default, this->table->apply_action(&pkt));
rc = this->add_entry(key, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
// we call apply_action, even though no action has been set
// base case
// hit, next node set to nullptr
f.set("0xaba");
ASSERT_EQ(nullptr, this->table->apply_action(&pkt));
// miss, next node is default one (as per the P4 program)
f.set("0xcba");
ASSERT_EQ(&this->node_miss_default, this->table->apply_action(&pkt));
// need to remove entry because the node pointer is inserted in the entry when
// the entry is added
rc = this->table->delete_entry(handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
DummyNode dummy_node_hit, dummy_node_miss;
this->table->set_next_node_hit(&dummy_node_hit);
this->table->set_next_node_miss(&dummy_node_miss);
rc = this->add_entry(key, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
f.set("0xaba");
ASSERT_EQ(&dummy_node_hit, this->table->apply_action(&pkt));
f.set("0xcba");
ASSERT_EQ(&dummy_node_miss, this->table->apply_action(&pkt));
rc = this->table->delete_entry(handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
f.set("0xaba");
ASSERT_EQ(&dummy_node_miss, this->table->apply_action(&pkt));
}
TYPED_TEST(TableSizeTwo, SetDefaultAction) {
std::string key = "\x0a\xba";
MatchErrorCode rc;
Packet pkt = this->get_pkt(64);
Field &f = pkt.get_phv()->get_field(this->testHeader1, 0);
// before even adding entry
// miss, next node is default one (as per the P4 program)
f.set("0xaba");
ASSERT_EQ(&this->node_miss_default, this->table->apply_action(&pkt));
MatchTable::Entry de;
rc = this->table->get_default_entry(&de);
ASSERT_EQ(MatchErrorCode::NO_DEFAULT_ENTRY, rc);
rc = this->table->set_default_action(&this->action_fn, ActionData());
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_EQ(nullptr, this->table->apply_action(&pkt));
rc = this->table->get_default_entry(&de);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_EQ(&this->action_fn, de.action_fn);
}
TYPED_TEST(TableSizeTwo, ConstDefaultActionFn) {
std::string key = "\x0a\xba";
MatchErrorCode rc;
Packet pkt = this->get_pkt(64);
Field &f = pkt.get_phv()->get_field(this->testHeader1, 0);
f.set("0xaba");
ActionFn bad_action_fn("bad_action", 1, 0);
this->table->set_next_node(1, nullptr);
this->table->set_const_default_action_fn(&this->action_fn);
// try to set the default action function to something new, should fail
rc = this->table->set_default_action(&bad_action_fn, ActionData());
ASSERT_EQ(MatchErrorCode::DEFAULT_ACTION_IS_CONST, rc);
// no default entry, so next node is default one
ASSERT_EQ(&this->node_miss_default, this->table->apply_action(&pkt));
// setting the default entry succeeds if the action function matches the const
// specification
rc = this->table->set_default_action(&this->action_fn, ActionData());
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_EQ(nullptr, this->table->apply_action(&pkt));
}
TYPED_TEST(TableSizeTwo, ConstDefaultEntry) {
std::string key = "\x0a\xba";
Packet pkt = this->get_pkt(64);
Field &f = pkt.get_phv()->get_field(this->testHeader1, 0);
f.set("0xaba");
ActionFn bad_action_fn("bad_action", 1, 0);
this->table->set_next_node(1, nullptr);
auto change_default_entry = [this, &bad_action_fn](
MatchErrorCode expected_rc_action_data,
MatchErrorCode expected_rc_action_fn) {
MatchErrorCode rc;
rc = this->table->set_default_action(&this->action_fn, ActionData());
ASSERT_EQ(expected_rc_action_data, rc);
rc = this->table->set_default_action(&bad_action_fn, ActionData());
ASSERT_EQ(expected_rc_action_fn, rc);
};
// false means non-const
this->table->set_default_default_entry(&this->action_fn, ActionData(), false);
// both changing action data and action fn should succeed
change_default_entry(MatchErrorCode::SUCCESS, MatchErrorCode::SUCCESS);
this->table->set_const_default_action_fn(&this->action_fn);
// can change the action data, not the action function
change_default_entry(MatchErrorCode::SUCCESS,
MatchErrorCode::DEFAULT_ACTION_IS_CONST);
// true means const
this->table->set_default_default_entry(&this->action_fn, ActionData(), true);
// no change possible
change_default_entry(MatchErrorCode::DEFAULT_ENTRY_IS_CONST,
MatchErrorCode::DEFAULT_ENTRY_IS_CONST);
ASSERT_EQ(nullptr, this->table->apply_action(&pkt));
}
TYPED_TEST(TableSizeTwo, ModifyEntry) {
std::string key_ = "\x0a\xba";
ByteContainer key("0x0aba");
entry_handle_t handle;
MatchErrorCode rc;
entry_handle_t lookup_handle;
bool hit;
Packet pkt = this->get_pkt(64);
Field &f = pkt.get_phv()->get_field(this->testHeader1, 0);
rc = this->add_entry(key_, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
f.set("0xaba");
const ActionEntry &entry_1 = this->lookup(pkt, &hit, &lookup_handle);
ASSERT_TRUE(hit);
ASSERT_EQ(0, entry_1.action_fn.action_data_size());
// in theory I could modify the entry directly using the pointer, but I need
// to exercise my modify_entry function
// we modify the entry, this time using some action data
ActionData new_action_data;
new_action_data.push_back_action_data(0xaba);
rc = this->table->modify_entry(handle, &this->action_fn_1,
std::move(new_action_data));
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
const ActionEntry &entry_2 = this->lookup(pkt, &hit, &lookup_handle);
ASSERT_TRUE(hit);
ASSERT_NE(0, entry_2.action_fn.action_data_size());
ASSERT_EQ((unsigned) 0xaba,
entry_2.action_fn.get_action_data_at(0).get_uint());
}
TYPED_TEST(TableSizeTwo, Counters) {
std::string key_ = "\x0a\xba";
entry_handle_t handle;
entry_handle_t bad_handle = 999u;
MatchErrorCode rc;
rc = this->add_entry(key_, &handle);
ASSERT_EQ(rc, MatchErrorCode::SUCCESS);
ASSERT_EQ(1u, this->table->get_num_entries());
uint64_t counter_bytes = 0, counter_packets = 0;
rc = this->table->query_counters(bad_handle, &counter_bytes,
&counter_packets);
ASSERT_EQ(rc, MatchErrorCode::INVALID_HANDLE);
rc = this->table->query_counters(handle, &counter_bytes, &counter_packets);
ASSERT_EQ(rc, MatchErrorCode::SUCCESS);
ASSERT_EQ(0u, counter_bytes);
ASSERT_EQ(0u, counter_packets);
Packet pkt = this->get_pkt(64);
Field &f = pkt.get_phv()->get_field(this->testHeader1, 0);
f.set("0xaba");
// there is no action specified for the entry, potential for a bug :(
this->table->apply_action(&pkt);
rc = this->table->query_counters(handle, &counter_bytes, &counter_packets);
ASSERT_EQ(rc, MatchErrorCode::SUCCESS);
ASSERT_EQ(64u, counter_bytes);
ASSERT_EQ(1u, counter_packets);
f.set("0xcba");
this->table->apply_action(&pkt);
// counters should not have been incremented
rc = this->table->query_counters(handle, &counter_bytes, &counter_packets);
ASSERT_EQ(rc, MatchErrorCode::SUCCESS);
ASSERT_EQ(64u, counter_bytes);
ASSERT_EQ(1u, counter_packets);
}
TYPED_TEST(TableSizeTwo, CountersReset) {
std::string key1("\x0a\xba"), key2("\x0a\xbb"), key3("\x0a\xbc");
entry_handle_t h1, h2, h3;
MatchErrorCode rc;
rc = this->add_entry(key1, &h1);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
rc = this->add_entry(key2, &h2);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
rc = this->add_entry(key3, &h3);
ASSERT_NE(MatchErrorCode::SUCCESS, rc); // table full
uint64_t counter_bytes = 0, counter_packets = 0;
auto send_pkt_and_increment = [this, &key1]() {
Packet pkt = this->get_pkt(64);
Field &f = pkt.get_phv()->get_field(this->testHeader1, 0);
f.set(key1.data(), key1.size());
this->table->apply_action(&pkt);
};
auto query_counter = [this, &h1, &counter_bytes, &counter_packets]() {
auto code = this->table->query_counters(h1, &counter_bytes,
&counter_packets);
ASSERT_EQ(code, MatchErrorCode::SUCCESS);
};
query_counter();
ASSERT_EQ(0u, counter_packets);
send_pkt_and_increment();
query_counter();
ASSERT_EQ(1u, counter_packets);
// now delete the entry
rc = this->table->delete_entry(h1);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
// add the entry back and check that the counters have been reset (the entry
// occupies the same "slot" in the table)
rc = this->add_entry(key1, &h1);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
query_counter();
ASSERT_EQ(0u, counter_packets);
ASSERT_EQ(0u, counter_bytes);
}
TYPED_TEST(TableSizeTwo, Meters) {
using clock = std::chrono::high_resolution_clock;
std::string key_ = "\x0a\xba";
ByteContainer key("0x0aba");
entry_handle_t handle;
entry_handle_t bad_handle = 999u;
MatchErrorCode rc;
Packet pkt = this->get_pkt(64);
Field &f = pkt.get_phv()->get_field(this->testHeader1, 0);
f.set("0xaba");
const Field &f_c = pkt.get_phv()->get_field(this->testHeader2, 0);
const Meter::color_t GREEN = 0;
const Meter::color_t RED = 1;
// 1 rate, same size as table
MeterArray meters("meter_test", 0, Meter::MeterType::PACKETS, 1,
this->t_size);
rc = this->add_entry(key_, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_EQ(1u, this->table->get_num_entries());
std::vector<Meter::rate_config_t> rates = {};
rc = this->table->set_meter_rates(handle, rates);
ASSERT_EQ(MatchErrorCode::METERS_DISABLED, rc);
this->table->set_direct_meters(&meters, this->testHeader2, 0);
std::vector<Meter::color_t> output;
output.reserve(32);
Meter::reset_global_clock();
clock::time_point next_stop = clock::now();
// meter rates not configured yet, all packets should be 'GREEN'
for (size_t i = 0; i < 20; i++) {
this->table->apply_action(&pkt);
Meter::color_t color = f_c.get_int();
output.push_back(color);
next_stop += milliseconds(100);
sleep_until(next_stop);
}
std::vector<Meter::color_t> expected(20, GREEN);
ASSERT_EQ(expected, output);
rc = this->table->set_meter_rates(handle, rates);
ASSERT_EQ(MatchErrorCode::ERROR, rc); // because rates vector empty
// 1 packet per second, burst size of 2 packets
Meter::rate_config_t one_rate = {0.000001, 2};
rates.push_back(one_rate);
rc = this->table->set_meter_rates(handle, rates);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
Meter::reset_global_clock();
output.clear();
std::vector<int> int_ms = {10, 10, 1100, 0};
for (int ms : int_ms) {
this->table->apply_action(&pkt);
Meter::color_t color = f_c.get_int();
output.push_back(color);
next_stop += milliseconds(ms);
sleep_until(next_stop);
}
expected = {GREEN, GREEN, RED, GREEN};
ASSERT_EQ(expected, output);
rc = this->table->set_meter_rates(bad_handle, rates);
ASSERT_EQ(MatchErrorCode::INVALID_HANDLE, rc);
}
TYPED_TEST(TableSizeTwo, Valid) {
std::string key_ = "\x0a\xba";
bool valid = true;
entry_handle_t handle;
MatchErrorCode rc;
entry_handle_t lookup_handle;
bool hit;
const ControlFlowNode *next_node;
rc = this->add_entry_w_valid(key_, valid, &handle);
ASSERT_EQ(rc, MatchErrorCode::SUCCESS);
ASSERT_EQ(1u, this->table_w_valid->get_num_entries());
Packet pkt = this->get_pkt(64);
Field &f = pkt.get_phv()->get_field(this->testHeader1, 0);
f.set("0xaba");
Header &h2 = pkt.get_phv()->get_header(this->testHeader2);
EXPECT_TRUE(h2.is_valid());
h2.mark_invalid();
this->table_w_valid->lookup(pkt, &hit, &lookup_handle, &next_node);
ASSERT_FALSE(hit);
h2.mark_valid();
this->table_w_valid->lookup(pkt, &hit, &lookup_handle, &next_node);
ASSERT_TRUE(hit);
}
TYPED_TEST(TableSizeTwo, ResetState) {
std::string key_ = "\x0a\xba";
ByteContainer key("0x0aba");
entry_handle_t handle;
MatchErrorCode rc;
entry_handle_t lookup_handle;
bool hit;
Packet pkt = this->get_pkt(64);
Field &f = pkt.get_phv()->get_field(this->testHeader1, 0);
rc = this->add_entry(key_, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
f.set("0xaba");
this->lookup(pkt, &hit, &lookup_handle);
ASSERT_TRUE(hit);
this->table->reset_state();
this->lookup(pkt, &hit, &lookup_handle);
ASSERT_FALSE(hit);
rc = this->table->delete_entry(handle);
ASSERT_EQ(MatchErrorCode::INVALID_HANDLE, rc);
rc = this->add_entry(key_, &handle);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
this->lookup(pkt, &hit, &lookup_handle);
ASSERT_TRUE(hit);
}
TYPED_TEST(TableSizeTwo, HandleIterator) {
entry_handle_t handle_1, handle_2;
MatchErrorCode rc;
rc = this->add_entry("\x0a\xba", &handle_1);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
rc = this->add_entry("\x12\x34", &handle_2);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
auto it = this->table->handles_begin();
ASSERT_EQ(handle_1, *it);
ASSERT_EQ(handle_1, *it++);
ASSERT_EQ(handle_2, *it);
ASSERT_EQ(this->table->handles_end(), ++it);
}
TYPED_TEST(TableSizeTwo, GetEntryFromKey) {
std::string key_1 = "\xaa\xaa";
std::string key_2 = "\xbb\xbb";
entry_handle_t handle_1, handle_2;
MatchErrorCode rc;
MatchTable::Entry entry;
auto match_key_1 = this->make_match_key(key_1);
auto match_key_2 = this->make_match_key(key_2);
rc = this->table->get_entry_from_key(match_key_1, &entry,
this->default_priority);
ASSERT_EQ(MatchErrorCode::BAD_MATCH_KEY, rc);
rc = this->add_entry(key_1, &handle_1);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
rc = this->table->get_entry_from_key(match_key_1, &entry,
this->default_priority);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_EQ(handle_1, entry.handle);
rc = this->add_entry(key_2, &handle_2);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
rc = this->table->get_entry_from_key(match_key_1, &entry,
this->default_priority);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_EQ(handle_1, entry.handle);
rc = this->table->get_entry_from_key(match_key_2, &entry,
this->default_priority);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_EQ(handle_2, entry.handle);
// we delete the first entry, then add it again, then retrieve the entry
// this was added because an earlier implementation would return the correct
// internal handle with an incorrect version number (so entry.handle was
// incorrect)
rc = this->table->delete_entry(handle_1);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
rc = this->add_entry(key_1, &handle_1);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
rc = this->table->get_entry_from_key(match_key_1, &entry,
this->default_priority);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
ASSERT_EQ(handle_1, entry.handle);
}
TYPED_TEST(TableSizeTwo, GetEntries) {
MatchErrorCode rc;
std::vector<entry_handle_t> handles;
std::vector<std::string> keys;
size_t num_entries = 2;
for (size_t e = 0; e < num_entries; e++) {
keys.emplace_back(2, static_cast<char>(e + 1));
handles.push_back(0);
rc = this->add_entry(keys.back(), &handles.back());
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);
}
const auto entries = this->table->get_entries();
ASSERT_EQ(num_entries, entries.size());
for (size_t i = 0; i < num_entries; i++) {
const auto &e = entries[i];
ASSERT_EQ(handles[i], e.handle);
ASSERT_EQ(keys[i], e.match_key[0].key);
ASSERT_EQ(&this->action_fn, e.action_fn);
ASSERT_EQ(0u, e.action_data.size());
ASSERT_EQ(0u, e.timeout_ms);
ASSERT_EQ(0u, e.time_since_hit_ms);
}
}
TYPED_TEST(TableSizeTwo, ImmutableEntries) {
MatchErrorCode rc;
entry_handle_t handle_1, handle_2;
std::string key_1("\xaa\xaa");
std::string key_2("\xbb\xbb");
rc = this->add_entry(key_1, &handle_1);
ASSERT_EQ(MatchErrorCode::SUCCESS, rc);