dpdk_esp_encrypt: add to prefetch data

The memory areas storing vlib_buffer_t and ip4|6_and_esp_header_t
are not prefetched. The patch help dpdk_esp_encrypt to reduce 18
clocks/pkt from 149 to 131 on Haswell when running IPsec in tunnel
mode.

Change-Id: I4f4e9e2b3982a4b7810cab8ed828a5e4631f8f8c
Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>

1 files changed, 13 insertions, 3 deletions

diff --git a/src/plugins/dpdk/ipsec/esp_encrypt.c b/src/plugins/dpdk/ipsec/esp_encrypt.c
index 908f846e315..653c158fb94 100644
--- a/src/plugins/dpdk/ipsec/esp_encrypt.c
+++ b/src/plugins/dpdk/ipsec/esp_encrypt.c
@@ -155,8 +155,8 @@ dpdk_esp_encrypt_inline (vlib_main_t * vm,
       while (n_left_from > 0 && n_left_to_next > 0)
 	{
 	  clib_error_t *error;
-	  u32 bi0;
-	  vlib_buffer_t *b0 = 0;
+	  u32 bi0, bi1;
+	  vlib_buffer_t *b0, *b1;
 	  u32 sa_index0;
 	  ip4_and_esp_header_t *ih0, *oh0 = 0;
 	  ip6_and_esp_header_t *ih6_0, *oh6_0 = 0;
@@ -169,7 +169,7 @@ dpdk_esp_encrypt_inline (vlib_main_t * vm,
 	  u8 trunc_size;
 	  u16 rewrite_len;
 	  u16 udp_encap_adv = 0;
-	  struct rte_mbuf *mb0 = 0;
+	  struct rte_mbuf *mb0;
 	  struct rte_crypto_op *op;
 	  u16 res_idx;
 
@@ -188,6 +188,16 @@ dpdk_esp_encrypt_inline (vlib_main_t * vm,
 	  /* mb0 */
 	  CLIB_PREFETCH (mb0, CLIB_CACHE_LINE_BYTES, STORE);
 
+	  if (n_left_from > 1)
+	    {
+	      bi1 = from[1];
+	      b1 = vlib_get_buffer (vm, bi1);
+
+	      CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, LOAD);
+	      CLIB_PREFETCH (b1->data - CLIB_CACHE_LINE_BYTES,
+			     CLIB_CACHE_LINE_BYTES, STORE);
+	    }
+
 	  op = ops[0];
 	  ops += 1;
 	  ASSERT (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED);

path: root/tests/vpp/perf/l2/10ge2p1x710-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr.robot

# Copyright (c) 2019 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.

*** Settings ***
| Resource | resources/libraries/robot/performance/performance_setup.robot
| ...
| Force Tags | 3_NODE_SINGLE_LINK_TOPO | PERFTEST | HW_ENV | NDRPDR
| ... | NIC_Intel-X710 | ETH | L2BDMACLRN | FEATURE | ACL | ACL_STATEFUL
| ... | IACL | ACL1 | 10K_FLOWS
| ...
| Suite Setup | Run Keywords
| ... | Set up 3-node performance topology with DUT's NIC model | L2
| ... | ${nic_name}
| ... | AND | Set up performance test suite with ACL
| Suite Teardown | Tear down 3-node performance topology
| ...
| Test Setup | Set up performance test
| Test Teardown | Tear down performance test
| ...
| Test Template | Local Template
| ...
| Documentation | *RFC2544: Pkt throughput L2BD test cases with ACL*
| ...
| ... | *[Top] Network Topologies:* TG-DUT1-DUT2-TG 3-node circular topology\
| ... | with single links between nodes.
| ... | *[Enc] Packet Encapsulations:* Eth-IPv4-UDP for L2 switching of IPv4.
| ... | *[Cfg] DUT configuration:* DUT1 is configured with L2 bridge domain\
| ... | and MAC learning enabled. DUT2 is configured with L2 cross-connects.\
| ... | Required ACL rules are applied to input paths of both DUT1 intefaces.\
| ... | DUT1 and DUT2 are tested with ${nic_name}.\
| ... | *[Ver] TG verification:* TG finds and reports throughput NDR (Non Drop\
| ... | Rate) with zero packet loss tolerance and throughput PDR (Partial Drop\
| ... | Rate) with non-zero packet loss tolerance (LT) expressed in percentage\
| ... | of packets transmitted. NDR and PDR are discovered for different\
| ... | Ethernet L2 frame sizes using MLRsearch library.\
| ... | Test packets are generated by TG on\
| ... | links to DUTs. TG traffic profile contains two L3 flow-groups\
| ... | (flow-group per direction, ${flows_per_dir} flows per flow-group) with\
| ... | all packets containing Ethernet header, IPv4 header with UDP header and\
| ... | static payload. MAC addresses are matching MAC addresses of the TG node\
| ... | interfaces.
| ... | *[Ref] Applicable standard specifications:* RFC2544.

*** Variables ***
| ${nic_name}= | Intel-X710
| ${overhead}= | ${0}
# ACL test setup
| ${acl_action}= | permit+reflect
| ${acl_apply_type}= | input
| ${no_hit_aces_number}= | 1
| ${flows_per_dir}= | 10k
# starting points for non-hitting ACLs
| ${src_ip_start}= | 30.30.30.1
| ${dst_ip_start}= | 40.40.40.1
| ${ip_step}= | ${1}
| ${sport_start}= | ${1000}
| ${dport_start}= | ${1000}
| ${port_step}= | ${1}
| ${trex_stream1_subnet}= | 10.10.10.0/24
| ${trex_stream2_subnet}= | 20.20.20.0/24
# Traffic profile:
| ${traffic_profile}= | trex-sl-3n-ethip4udp-10u1000p-conc

*** Keywords ***
| Local Template
| | [Documentation]
| | ... | [Cfg] DUT runs L2BD config with ACLs with ${phy_cores} phy
| | ... | core(s).
| | ... | [Ver] Measure NDR and PDR values using MLRsearch algorithm.\
| | ...
| | ... | *Arguments:*
| | ... | - frame_size - Framesize in Bytes in integer or string (IMIX_v4_1).
| | ... | Type: integer, string
| | ... | - phy_cores - Number of physical cores. Type: integer
| | ... | - rxq - Number of RX queues, default value: ${None}. Type: integer
| | ...
| | [Arguments] | ${frame_size} | ${phy_cores} | ${rxq}=${None}
| | ...
| | Set Test Variable | \${frame_size}
| | ...
| | Given Add worker threads and rxqueues to all DUTs | ${phy_cores} | ${rxq}
| | And Add PCI devices to all DUTs
| | Set Max Rate And Jumbo And Handle Multi Seg
| | And Apply startup configuration on all VPP DUTs
| | When Initialize L2 bridge domain with IPv4 ACLs on DUT1 in 3-node circular topology
| | Then Find NDR and PDR intervals using optimized search

*** Test Cases ***
| tc01-64B-1c-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr
| | [Tags] | 64B | 1C
| | frame_size=${64} | phy_cores=${1}

| tc02-64B-2c-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr
| | [Tags] | 64B | 2C
| | frame_size=${64} | phy_cores=${2}

| tc03-64B-4c-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr
| | [Tags] | 64B | 4C
| | frame_size=${64} | phy_cores=${4}

| tc04-1518B-1c-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr
| | [Tags] | 1518B | 1C
| | frame_size=${1518} | phy_cores=${1}

| tc05-1518B-2c-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr
| | [Tags] | 1518B | 2C
| | frame_size=${1518} | phy_cores=${2}

| tc06-1518B-4c-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr
| | [Tags] | 1518B | 4C
| | frame_size=${1518} | phy_cores=${4}

| tc07-9000B-1c-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr
| | [Tags] | 9000B | 1C
| | frame_size=${9000} | phy_cores=${1}

| tc08-9000B-2c-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr
| | [Tags] | 9000B | 2C
| | frame_size=${9000} | phy_cores=${2}

| tc09-9000B-4c-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr
| | [Tags] | 9000B | 4C
| | frame_size=${9000} | phy_cores=${4}

| tc10-IMIX-1c-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr
| | [Tags] | IMIX | 1C
| | frame_size=IMIX_v4_1 | phy_cores=${1}

| tc11-IMIX-2c-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr
| | [Tags] | IMIX | 2C
| | frame_size=IMIX_v4_1 | phy_cores=${2}

| tc12-IMIX-4c-eth-l2bdbasemaclrn-iacl1sf-10kflows-ndrpdr
| | [Tags] | IMIX | 4C
| | frame_size=IMIX_v4_1 | phy_cores=${4}