flow_control_pipe_sample.c

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/*
 * Copyright (c) 2022 NVIDIA CORPORATION AND AFFILIATES.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright notice, this list of
 *       conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice, this list of
 *       conditions and the following disclaimer in the documentation and/or other materials
 *       provided with the distribution.
 *     * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
 *       to endorse or promote products derived from this software without specific prior written
 *       permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
 
#include <string.h>
#include <unistd.h>
 
#include <rte_byteorder.h>
 
#include <doca_flow.h>
#include <doca_log.h>
#include <doca_bitfield.h>
 
#include "flow_common.h"
 
DOCA_LOG_REGISTER(FLOW_CONTROL_PIPE);
 
#define NB_ACTION_DESC (1)
#define DEFAULT_CTRL_PIPE_SIZE (8192)
 
/*
 * Create DOCA Flow pipe that match VXLAN traffic with changeable VXLAN tunnel ID and decap action
 *
 * @port [in]: port of the pipe
 * @port_id [in]: port ID of the pipe
 * @pipe [out]: created pipe pointer
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
static doca_error_t create_vxlan_pipe(struct doca_flow_port *port, int port_id, struct doca_flow_pipe **pipe)
{
    struct doca_flow_match match;
    struct doca_flow_actions actions, *actions_arr[NB_ACTIONS_ARR];
    struct doca_flow_fwd fwd;
    struct doca_flow_pipe_cfg *pipe_cfg;
    doca_error_t result;
 
    memset(&match, 0, sizeof(match));
    memset(&actions, 0, sizeof(actions));
    memset(&fwd, 0, sizeof(fwd));
 
    match.tun.type = DOCA_FLOW_TUN_VXLAN;
    match.tun.vxlan_type = DOCA_FLOW_TUN_EXT_VXLAN_STANDARD;
    match.tun.vxlan_tun_id = 0xffffffff;
 
    actions.decap_type = DOCA_FLOW_RESOURCE_TYPE_NON_SHARED;
    actions.decap_cfg.is_l2 = true;
    actions_arr[0] = &actions;
 
    result = doca_flow_pipe_cfg_create(&pipe_cfg, port);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to create doca_flow_pipe_cfg: %s", doca_error_get_descr(result));
        return result;
    }
 
    result = set_flow_pipe_cfg(pipe_cfg, "VXLAN_PIPE", DOCA_FLOW_PIPE_BASIC, false);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
    result = doca_flow_pipe_cfg_set_match(pipe_cfg, &match, NULL);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg match: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
    result = doca_flow_pipe_cfg_set_actions(pipe_cfg, actions_arr, NULL, NULL, NB_ACTIONS_ARR);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg actions: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
 
    fwd.type = DOCA_FLOW_FWD_PORT;
    fwd.port_id = port_id ^ 1;
 
    result = doca_flow_pipe_create(pipe_cfg, &fwd, NULL, pipe);
destroy_pipe_cfg:
    doca_flow_pipe_cfg_destroy(pipe_cfg);
    return result;
}
 
/*
 * Add DOCA Flow pipe entry with example VXLAN tunnel ID to match
 *
 * @pipe [in]: pipe of the entry
 * @status [in]: user context for adding entry
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
static doca_error_t add_vxlan_pipe_entry(struct doca_flow_pipe *pipe, struct entries_status *status)
{
    struct doca_flow_match match;
    struct doca_flow_actions actions;
    struct doca_flow_pipe_entry *entry;
 
    doca_be32_t vxlan_tun_id = DOCA_HTOBE32(0xcdab12);
    doca_error_t result;
 
    memset(&match, 0, sizeof(match));
    memset(&actions, 0, sizeof(actions));
 
    match.tun.vxlan_tun_id = vxlan_tun_id;
    actions.action_idx = 0;
 
    result = doca_flow_pipe_add_entry(0,
                      pipe,
                      &match,
                      &actions,
                      NULL,
                      NULL,
                      DOCA_FLOW_WAIT_FOR_BATCH,
                      status,
                      &entry);
    if (result != DOCA_SUCCESS)
        return result;
 
    return DOCA_SUCCESS;
}
 
/*
 * Create DOCA Flow pipe that match VXLAN-GPE traffic with changeable VXLAN tunnel ID/next
 * protocol and fwd to peer port
 *
 * @port [in]: port of the pipe
 * @port_id [in]: port ID of the pipe
 * @pipe [out]: created pipe pointer
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
static doca_error_t create_vxlan_gpe_pipe(struct doca_flow_port *port, int port_id, struct doca_flow_pipe **pipe)
{
    struct doca_flow_match match;
    struct doca_flow_fwd fwd;
    struct doca_flow_pipe_cfg *pipe_cfg;
    doca_error_t result;
    struct doca_flow_actions actions, *actions_arr[NB_ACTIONS_ARR];
    uint8_t src_mac[] = {0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff};
    uint8_t dst_mac[] = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
 
    memset(&match, 0, sizeof(match));
    memset(&fwd, 0, sizeof(fwd));
    memset(&actions, 0, sizeof(actions));
 
    match.tun.type = DOCA_FLOW_TUN_VXLAN;
    match.tun.vxlan_type = DOCA_FLOW_TUN_EXT_VXLAN_GPE;
    match.tun.vxlan_tun_id = 0xffffffff;
    match.tun.vxlan_gpe_next_protocol = 0xff;
    match.tun.vxlan_gpe_flags = 0xff;
 
    actions.decap_type = DOCA_FLOW_RESOURCE_TYPE_NON_SHARED;
    actions.decap_cfg.is_l2 = false;
    /* append eth header after decap vxlan-gpe tunnel for case next_proto is IPV4 */
    SET_MAC_ADDR(actions.decap_cfg.eth.src_mac,
             src_mac[0],
             src_mac[1],
             src_mac[2],
             src_mac[3],
             src_mac[4],
             src_mac[5]);
    SET_MAC_ADDR(actions.decap_cfg.eth.dst_mac,
             dst_mac[0],
             dst_mac[1],
             dst_mac[2],
             dst_mac[3],
             dst_mac[4],
             dst_mac[5]);
    actions.decap_cfg.eth.type = RTE_BE16(DOCA_FLOW_ETHER_TYPE_IPV4);
    actions_arr[0] = &actions;
 
    result = doca_flow_pipe_cfg_create(&pipe_cfg, port);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to create doca_flow_pipe_cfg: %s", doca_error_get_descr(result));
        return result;
    }
 
    result = set_flow_pipe_cfg(pipe_cfg, "VXLAN_PIPE_GPE", DOCA_FLOW_PIPE_BASIC, false);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
 
    result = doca_flow_pipe_cfg_set_match(pipe_cfg, &match, NULL);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg match: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
 
    result = doca_flow_pipe_cfg_set_actions(pipe_cfg, actions_arr, NULL, NULL, NB_ACTIONS_ARR);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg actions: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
 
    fwd.type = DOCA_FLOW_FWD_PORT;
    fwd.port_id = port_id ^ 1;
 
    result = doca_flow_pipe_create(pipe_cfg, &fwd, NULL, pipe);
destroy_pipe_cfg:
    doca_flow_pipe_cfg_destroy(pipe_cfg);
    return result;
}
 
/*
 * Add DOCA Flow pipe entry with example VXLAN-GPE tunnel ID to match
 *
 * @pipe [in]: pipe of the entry
 * @status [in]: user context for adding entry
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
static doca_error_t add_vxlan_gpe_pipe_entry(struct doca_flow_pipe *pipe, struct entries_status *status)
{
    struct doca_flow_match match;
    struct doca_flow_pipe_entry *entry;
 
    doca_be32_t vxlan_tun_id = DOCA_HTOBE32(0xcdab12);
    doca_error_t result;
 
    memset(&match, 0, sizeof(match));
 
    match.tun.vxlan_tun_id = vxlan_tun_id;
    match.tun.vxlan_gpe_next_protocol = DOCA_FLOW_VXLAN_GPE_TYPE_IPV4;
    match.tun.vxlan_gpe_flags = 0xF;
 
    result = doca_flow_pipe_add_entry(0, pipe, &match, NULL, NULL, NULL, DOCA_FLOW_WAIT_FOR_BATCH, status, &entry);
    if (result != DOCA_SUCCESS)
        return result;
 
    return DOCA_SUCCESS;
}
 
/*
 * Create DOCA Flow pipe that match MPLS traffic with changeable MPLS tunnel ID and decap action
 *
 * @port [in]: port of the pipe
 * @port_id [in]: port ID of the pipe
 * @pipe [out]: created pipe pointer
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
static doca_error_t create_mpls_pipe(struct doca_flow_port *port, int port_id, struct doca_flow_pipe **pipe)
{
    struct doca_flow_match match;
    struct doca_flow_match match_mask;
    struct doca_flow_actions actions, *actions_arr[NB_ACTIONS_ARR];
    struct doca_flow_fwd fwd;
    struct doca_flow_pipe_cfg *pipe_cfg;
    uint8_t src_mac[] = {0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff};
    uint8_t dst_mac[] = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
    doca_error_t result;
 
    memset(&match, 0, sizeof(match));
    memset(&match_mask, 0, sizeof(match_mask));
    memset(&actions, 0, sizeof(actions));
    memset(&fwd, 0, sizeof(fwd));
 
    actions.decap_type = DOCA_FLOW_RESOURCE_TYPE_NON_SHARED;
    actions.decap_cfg.is_l2 = false;
    /* append eth header after decap MPLS tunnel */
    SET_MAC_ADDR(actions.decap_cfg.eth.src_mac,
             src_mac[0],
             src_mac[1],
             src_mac[2],
             src_mac[3],
             src_mac[4],
             src_mac[5]);
    SET_MAC_ADDR(actions.decap_cfg.eth.dst_mac,
             dst_mac[0],
             dst_mac[1],
             dst_mac[2],
             dst_mac[3],
             dst_mac[4],
             dst_mac[5]);
    actions.decap_cfg.eth.type = RTE_BE16(DOCA_FLOW_ETHER_TYPE_IPV4);
    actions_arr[0] = &actions;
 
    match.outer.l4_type_ext = DOCA_FLOW_L4_TYPE_EXT_UDP;
    match.outer.udp.l4_port.dst_port = rte_cpu_to_be_16(DOCA_FLOW_MPLS_DEFAULT_PORT);
    match.tun.type = DOCA_FLOW_TUN_MPLS_O_UDP;
    match.tun.mpls[2].label = 0xffffffff;
 
    result = doca_flow_mpls_label_encode(0xfffff, 0, 0, true, &match_mask.tun.mpls[2]);
    if (result != DOCA_SUCCESS)
        return result;
 
    result = doca_flow_pipe_cfg_create(&pipe_cfg, port);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to create doca_flow_pipe_cfg: %s", doca_error_get_descr(result));
        return result;
    }
 
    result = set_flow_pipe_cfg(pipe_cfg, "MPLS_PIPE", DOCA_FLOW_PIPE_BASIC, false);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
    result = doca_flow_pipe_cfg_set_match(pipe_cfg, &match, &match_mask);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg match: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
    result = doca_flow_pipe_cfg_set_actions(pipe_cfg, actions_arr, NULL, NULL, NB_ACTIONS_ARR);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg actions: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
 
    fwd.type = DOCA_FLOW_FWD_PORT;
    fwd.port_id = port_id ^ 1;
 
    result = doca_flow_pipe_create(pipe_cfg, &fwd, NULL, pipe);
destroy_pipe_cfg:
    doca_flow_pipe_cfg_destroy(pipe_cfg);
    return result;
}
 
/*
 * Add DOCA Flow pipe entry with example MPLS tunnel ID to match
 *
 * @pipe [in]: pipe of the entry
 * @status [in]: user context for adding entry
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
static doca_error_t add_mpls_pipe_entry(struct doca_flow_pipe *pipe, struct entries_status *status)
{
    struct doca_flow_match match;
    struct doca_flow_actions actions;
    struct doca_flow_pipe_entry *entry;
    doca_error_t result;
 
    memset(&match, 0, sizeof(match));
    memset(&actions, 0, sizeof(actions));
 
    actions.action_idx = 0;
 
    result = doca_flow_mpls_label_encode(0xababa, 0, 0, true, &match.tun.mpls[2]);
    if (result != DOCA_SUCCESS)
        return result;
 
    result = doca_flow_pipe_add_entry(0,
                      pipe,
                      &match,
                      &actions,
                      NULL,
                      NULL,
                      DOCA_FLOW_WAIT_FOR_BATCH,
                      status,
                      &entry);
    if (result != DOCA_SUCCESS)
        return result;
 
    return DOCA_SUCCESS;
}
 
/*
 * Create DOCA Flow pipe that match GRE traffic with changeable GRE key and decap action
 *
 * @port [in]: port of the pipe
 * @port_id [in]: port ID of the pipe
 * @pipe [out]: created pipe pointer
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
static doca_error_t create_gre_pipe(struct doca_flow_port *port, int port_id, struct doca_flow_pipe **pipe)
{
    struct doca_flow_match match;
    struct doca_flow_actions actions, *actions_arr[NB_ACTIONS_ARR];
    struct doca_flow_fwd fwd;
    struct doca_flow_pipe_cfg *pipe_cfg;
    uint8_t src_mac[] = {0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff};
    uint8_t dst_mac[] = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
    doca_error_t result;
 
    memset(&match, 0, sizeof(match));
    memset(&actions, 0, sizeof(actions));
    memset(&fwd, 0, sizeof(fwd));
 
    match.tun.type = DOCA_FLOW_TUN_GRE;
    match.tun.key_present = true;
    match.tun.gre_key = 0xffffffff;
 
    actions.decap_type = DOCA_FLOW_RESOURCE_TYPE_NON_SHARED;
    actions.decap_cfg.is_l2 = false;
 
    /* append eth header after decap GRE tunnel */
    SET_MAC_ADDR(actions.decap_cfg.eth.src_mac,
             src_mac[0],
             src_mac[1],
             src_mac[2],
             src_mac[3],
             src_mac[4],
             src_mac[5]);
    SET_MAC_ADDR(actions.decap_cfg.eth.dst_mac,
             dst_mac[0],
             dst_mac[1],
             dst_mac[2],
             dst_mac[3],
             dst_mac[4],
             dst_mac[5]);
    actions.decap_cfg.eth.type = RTE_BE16(DOCA_FLOW_ETHER_TYPE_IPV4);
    actions_arr[0] = &actions;
 
    result = doca_flow_pipe_cfg_create(&pipe_cfg, port);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to create doca_flow_pipe_cfg: %s", doca_error_get_descr(result));
        return result;
    }
 
    result = set_flow_pipe_cfg(pipe_cfg, "GRE_PIPE", DOCA_FLOW_PIPE_BASIC, false);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
    result = doca_flow_pipe_cfg_set_match(pipe_cfg, &match, NULL);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg match: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
    result = doca_flow_pipe_cfg_set_actions(pipe_cfg, actions_arr, NULL, NULL, NB_ACTIONS_ARR);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg actions: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
 
    fwd.type = DOCA_FLOW_FWD_PORT;
    fwd.port_id = port_id ^ 1;
 
    result = doca_flow_pipe_create(pipe_cfg, &fwd, NULL, pipe);
destroy_pipe_cfg:
    doca_flow_pipe_cfg_destroy(pipe_cfg);
    return result;
}
 
/*
 * Add DOCA Flow pipe entry with example GRE key to match
 *
 * @pipe [in]: pipe of the entry
 * @status [in]: user context for adding entry
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
static doca_error_t add_gre_pipe_entry(struct doca_flow_pipe *pipe, struct entries_status *status)
{
    struct doca_flow_match match;
    struct doca_flow_actions actions;
    struct doca_flow_pipe_entry *entry;
    doca_be32_t gre_key = RTE_BE32(900);
    doca_error_t result;
 
    memset(&match, 0, sizeof(match));
    memset(&actions, 0, sizeof(actions));
 
    match.tun.gre_key = gre_key;
    actions.action_idx = 0;
 
    result = doca_flow_pipe_add_entry(0, pipe, &match, &actions, NULL, NULL, DOCA_FLOW_NO_WAIT, status, &entry);
    if (result != DOCA_SUCCESS)
        return result;
 
    return DOCA_SUCCESS;
}
 
/*
 * Create DOCA Flow pipe and entry that match NVGRE traffic with changeable vs_id/flow_id and
 * do hairpin action
 *
 * @port [in]: port of the pipe
 * @port_id [in]: port ID of the pipe
 * @status [in]: user context for adding entry
 * @num_of_entries [in]: total entry number
 * @pipe [out]: created pipe pointer
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
static doca_error_t create_nvgre_pipe_and_entry(struct doca_flow_port *port,
                        int port_id,
                        struct entries_status *status,
                        int *num_of_entries,
                        struct doca_flow_pipe **pipe)
{
    struct doca_flow_match match;
    struct doca_flow_actions actions, *actions_arr[NB_ACTIONS_ARR];
    struct doca_flow_fwd fwd;
    struct doca_flow_pipe_cfg *pipe_cfg;
    struct doca_flow_pipe_entry *entry;
    doca_error_t result;
 
    memset(&match, 0, sizeof(match));
    memset(&actions, 0, sizeof(actions));
    memset(&fwd, 0, sizeof(fwd));
 
    match.tun.type = DOCA_FLOW_TUN_GRE;
    match.tun.gre_type = DOCA_FLOW_TUN_EXT_GRE_NVGRE;
    match.tun.protocol = RTE_BE16(DOCA_FLOW_ETHER_TYPE_TEB);
    match.tun.nvgre_vs_id = 0xffffffff;
    match.tun.nvgre_flow_id = 0xff;
    match.inner.eth.type = RTE_BE16(DOCA_FLOW_ETHER_TYPE_IPV4);
    match.inner.ip4.next_proto = DOCA_FLOW_PROTO_UDP;
    match.inner.l3_type = DOCA_FLOW_L3_TYPE_IP4;
    match.inner.l4_type_ext = DOCA_FLOW_L4_TYPE_EXT_UDP;
    match.inner.udp.l4_port.src_port = RTE_BE16(1111);
 
    actions_arr[0] = &actions;
 
    result = doca_flow_pipe_cfg_create(&pipe_cfg, port);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to create doca_flow_pipe_cfg: %s", doca_error_get_descr(result));
        return result;
    }
 
    result = set_flow_pipe_cfg(pipe_cfg, "NVGRE_PIPE", DOCA_FLOW_PIPE_BASIC, false);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
    result = doca_flow_pipe_cfg_set_match(pipe_cfg, &match, NULL);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg match: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
    result = doca_flow_pipe_cfg_set_actions(pipe_cfg, actions_arr, NULL, NULL, NB_ACTIONS_ARR);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg actions: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
 
    fwd.type = DOCA_FLOW_FWD_PORT;
    fwd.port_id = port_id ^ 1;
 
    result = doca_flow_pipe_create(pipe_cfg, &fwd, NULL, pipe);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to create nvgre pipe: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
 
    memset(&match, 0, sizeof(match));
    memset(&actions, 0, sizeof(actions));
 
    match.tun.nvgre_vs_id = RTE_BE32((uint32_t)0x123456 << 8);
    match.tun.nvgre_flow_id = 0x78;
    actions.action_idx = 0;
 
    result = doca_flow_pipe_add_entry(0, *pipe, &match, &actions, NULL, NULL, DOCA_FLOW_NO_WAIT, status, &entry);
    if (result == DOCA_SUCCESS) {
        (*num_of_entries)++;
    }
destroy_pipe_cfg:
    doca_flow_pipe_cfg_destroy(pipe_cfg);
    return result;
}
 
/*
 * Create DOCA Flow control pipe
 *
 * @port [in]: port of the pipe
 * @pipe [out]: created pipe pointer
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
static doca_error_t create_control_pipe(struct doca_flow_port *port, struct doca_flow_pipe **pipe)
{
    struct doca_flow_pipe_cfg *pipe_cfg;
    doca_error_t result;
 
    result = doca_flow_pipe_cfg_create(&pipe_cfg, port);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to create doca_flow_pipe_cfg: %s", doca_error_get_descr(result));
        return result;
    }
 
    result = set_flow_pipe_cfg(pipe_cfg, "CONTROL_PIPE", DOCA_FLOW_PIPE_CONTROL, true);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to set doca_flow_pipe_cfg: %s", doca_error_get_descr(result));
        goto destroy_pipe_cfg;
    }
 
    result = doca_flow_pipe_create(pipe_cfg, NULL, NULL, pipe);
destroy_pipe_cfg:
    doca_flow_pipe_cfg_destroy(pipe_cfg);
    return result;
}
 
/*
 * Add DOCA Flow control entry jump to the NVGRE pipe
 *
 * @control_pipe [in]: the control pipe
 * @nvgre_pipe [in]: the nvgre pipe
 * @status [in]: user context for adding entry
 * @priority [in]: the priority of the new entry
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
static doca_error_t control_add_nvgre_entry(struct doca_flow_pipe *control_pipe,
                        struct doca_flow_pipe *nvgre_pipe,
                        struct entries_status *status,
                        uint8_t priority)
{
    struct doca_flow_match match;
    struct doca_flow_fwd fwd;
 
    memset(&match, 0, sizeof(match));
    memset(&fwd, 0, sizeof(fwd));
 
    match.parser_meta.outer_l3_type = DOCA_FLOW_L3_META_IPV4;
    match.outer.l3_type = DOCA_FLOW_L3_TYPE_IP4;
    match.outer.ip4.next_proto = DOCA_FLOW_PROTO_GRE;
    match.tun.type = DOCA_FLOW_TUN_GRE;
    match.tun.gre_type = DOCA_FLOW_TUN_EXT_GRE_STANDARD;
    match.tun.protocol = RTE_BE16(DOCA_FLOW_ETHER_TYPE_TEB);
 
    fwd.type = DOCA_FLOW_FWD_PIPE;
    fwd.next_pipe = nvgre_pipe;
 
    return doca_flow_pipe_control_add_entry(0,
                        priority,
                        control_pipe,
                        &match,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        &fwd,
                        status,
                        NULL);
}
 
/*
 * Add DOCA Flow pipe entries to the control pipe:
 * - entry with VXLAN match that forward the matched packet to vxlan_pipe
 * - entry with VXLAN-GPE match that forward the matched packet to vxlan_gpe_pipe
 * - entry with MPLS match that forward the matched packet to mpls_pipe
 * - entry with GRE match that forward the matched packet to gre_pipe
 *
 * @control_pipe [in]: pipe of the entry
 * @vxlan_pipe [in]: pipe to forward VXLAN traffic
 * @vxlan_gpe_pipe [in]: pipe to forward VXLAN-GPE traffic
 * @mpls_pipe [in]: pipe to forward MPLS traffic
 * @gre_pipe [in]: pipe to forward GRE traffic
 * @nvgre_pipe [in]: pipe to forward NVGRE traffic
 * @status [in]: user context for adding entry
 * @num_of_entries [in]: total entry number
 * @shared_counter_id [in]: shared counter id
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
static doca_error_t add_control_pipe_entries(struct doca_flow_pipe *control_pipe,
                         struct doca_flow_pipe *vxlan_pipe,
                         struct doca_flow_pipe *vxlan_gpe_pipe,
                         struct doca_flow_pipe *mpls_pipe,
                         struct doca_flow_pipe *gre_pipe,
                         struct doca_flow_pipe *nvgre_pipe,
                         struct entries_status *status,
                         int *num_of_entries,
                         int shared_counter_id)
{
    struct doca_flow_match match;
    struct doca_flow_fwd fwd;
    struct doca_flow_monitor monitor;
    uint8_t priority = 0;
    doca_error_t result;
 
    memset(&match, 0, sizeof(match));
    memset(&fwd, 0, sizeof(fwd));
    memset(&monitor, 0, sizeof(monitor));
 
    /* set shared counter ID */
    monitor.counter_type = DOCA_FLOW_RESOURCE_TYPE_SHARED;
    monitor.shared_counter.shared_counter_id = shared_counter_id;
 
    match.parser_meta.outer_l4_type = DOCA_FLOW_L4_META_UDP;
    match.parser_meta.outer_l3_type = DOCA_FLOW_L3_META_IPV4;
    match.outer.l4_type_ext = DOCA_FLOW_L4_TYPE_EXT_UDP;
    match.outer.udp.l4_port.dst_port = rte_cpu_to_be_16(DOCA_FLOW_VXLAN_GPE_DEFAULT_PORT);
 
    fwd.type = DOCA_FLOW_FWD_PIPE;
    fwd.next_pipe = vxlan_gpe_pipe;
 
    result = doca_flow_pipe_control_add_entry(0,
                          priority,
                          control_pipe,
                          &match,
                          NULL,
                          NULL,
                          NULL,
                          NULL,
                          NULL,
                          &monitor,
                          &fwd,
                          status,
                          NULL);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to add control pipe entry: %s", doca_error_get_descr(result));
        return result;
    }
    (*num_of_entries)++;
 
    memset(&match, 0, sizeof(match));
    memset(&fwd, 0, sizeof(fwd));
 
    match.parser_meta.outer_l4_type = DOCA_FLOW_L4_META_UDP;
    match.parser_meta.outer_l3_type = DOCA_FLOW_L3_META_IPV4;
    match.outer.l4_type_ext = DOCA_FLOW_L4_TYPE_EXT_UDP;
    match.outer.udp.l4_port.dst_port = rte_cpu_to_be_16(DOCA_FLOW_VXLAN_DEFAULT_PORT);
 
    fwd.type = DOCA_FLOW_FWD_PIPE;
    fwd.next_pipe = vxlan_pipe;
 
    result = doca_flow_pipe_control_add_entry(0,
                          priority,
                          control_pipe,
                          &match,
                          NULL,
                          NULL,
                          NULL,
                          NULL,
                          NULL,
                          &monitor,
                          &fwd,
                          status,
                          NULL);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to add control pipe entry: %s", doca_error_get_descr(result));
        return result;
    }
    (*num_of_entries)++;
 
    memset(&match, 0, sizeof(match));
    memset(&fwd, 0, sizeof(fwd));
 
    match.parser_meta.outer_l4_type = DOCA_FLOW_L4_META_UDP;
    match.parser_meta.outer_l3_type = DOCA_FLOW_L3_META_IPV4;
    match.outer.l4_type_ext = DOCA_FLOW_L4_TYPE_EXT_UDP;
    match.outer.udp.l4_port.dst_port = rte_cpu_to_be_16(DOCA_FLOW_MPLS_DEFAULT_PORT);
 
    fwd.type = DOCA_FLOW_FWD_PIPE;
    fwd.next_pipe = mpls_pipe;
 
    result = doca_flow_pipe_control_add_entry(0,
                          priority,
                          control_pipe,
                          &match,
                          NULL,
                          NULL,
                          NULL,
                          NULL,
                          NULL,
                          &monitor,
                          &fwd,
                          status,
                          NULL);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to add control pipe entry: %s", doca_error_get_descr(result));
        return result;
    }
    (*num_of_entries)++;
 
    memset(&match, 0, sizeof(match));
    memset(&fwd, 0, sizeof(fwd));
 
    match.parser_meta.outer_l3_type = DOCA_FLOW_L3_META_IPV4;
    match.outer.l3_type = DOCA_FLOW_L3_TYPE_IP4;
    match.outer.ip4.next_proto = DOCA_FLOW_PROTO_GRE;
 
    fwd.type = DOCA_FLOW_FWD_PIPE;
    fwd.next_pipe = gre_pipe;
 
    result = doca_flow_pipe_control_add_entry(0,
                          priority + 1,
                          control_pipe,
                          &match,
                          NULL,
                          NULL,
                          NULL,
                          NULL,
                          NULL,
                          &monitor,
                          &fwd,
                          status,
                          NULL);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to add control pipe entry: %s", doca_error_get_descr(result));
        return result;
    }
    (*num_of_entries)++;
 
    if (nvgre_pipe) {
        result = control_add_nvgre_entry(control_pipe, nvgre_pipe, status, priority);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to add control pipe entry: %s", doca_error_get_descr(result));
            return result;
        }
        (*num_of_entries)++;
    }
    return DOCA_SUCCESS;
}
 
/*
 * Run flow_control_pipe sample
 *
 * @nb_queues [in]: number of queues the sample will use
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise.
 */
doca_error_t flow_control_pipe(int nb_queues)
{
    int nb_ports = 2;
    struct flow_resources resource = {0};
    uint32_t nr_shared_resources[SHARED_RESOURCE_NUM_VALUES] = {0};
    struct doca_flow_port *ports[nb_ports];
    struct doca_dev *dev_arr[nb_ports];
    uint32_t actions_mem_size[nb_ports];
    struct doca_flow_pipe *vxlan_pipe;
    struct doca_flow_pipe *vxlan_gpe_pipe;
    struct doca_flow_pipe *mpls_pipe;
    struct doca_flow_pipe *gre_pipe;
    struct doca_flow_pipe *nvgre_pipe;
    struct doca_flow_pipe *control_pipe;
    struct entries_status status;
    int num_of_entries = 0;
    doca_error_t result;
    int port_id;
    uint32_t shared_counter_ids[] = {0, 1};
    struct doca_flow_shared_resource_cfg cfg = {0};
    struct doca_flow_resource_query query_results_array[nb_ports];
 
    nr_shared_resources[DOCA_FLOW_SHARED_RESOURCE_COUNTER] = 2;
    result = init_doca_flow(nb_queues, "vnf,hws", &resource, nr_shared_resources);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to init DOCA Flow: %s", doca_error_get_descr(result));
        return result;
    }
 
    memset(dev_arr, 0, sizeof(struct doca_dev *) * nb_ports);
    ARRAY_INIT(actions_mem_size, ACTIONS_MEM_SIZE(nb_queues, DEFAULT_CTRL_PIPE_SIZE));
    result = init_doca_flow_ports(nb_ports, ports, true, dev_arr, actions_mem_size);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to init DOCA ports: %s", doca_error_get_descr(result));
        doca_flow_destroy();
        return result;
    }
 
    for (port_id = 0; port_id < nb_ports; port_id++, num_of_entries = 0) {
        memset(&status, 0, sizeof(status));
 
        /* config and bind shared counter to port */
        result = doca_flow_shared_resource_set_cfg(DOCA_FLOW_SHARED_RESOURCE_COUNTER, port_id, &cfg);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to configure shared counter to port %d", port_id);
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
 
        result = doca_flow_shared_resources_bind(DOCA_FLOW_SHARED_RESOURCE_COUNTER,
                             &shared_counter_ids[port_id],
                             1,
                             ports[port_id]);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to bind shared counter to pipe");
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
 
        result = create_vxlan_pipe(ports[port_id], port_id, &vxlan_pipe);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to add vxlan pipe: %s", doca_error_get_descr(result));
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
 
        result = add_vxlan_pipe_entry(vxlan_pipe, &status);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to add vxlan pipe entry: %s", doca_error_get_descr(result));
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
        num_of_entries++;
 
        result = create_vxlan_gpe_pipe(ports[port_id], port_id, &vxlan_gpe_pipe);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to add vxlan gpe pipe: %s", doca_error_get_descr(result));
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
 
        result = add_vxlan_gpe_pipe_entry(vxlan_gpe_pipe, &status);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to add vxlan gpe pipe entry: %s", doca_error_get_descr(result));
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
        num_of_entries++;
 
        result = create_mpls_pipe(ports[port_id], port_id, &mpls_pipe);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to add mpls pipe: %s", doca_error_get_descr(result));
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
 
        result = add_mpls_pipe_entry(mpls_pipe, &status);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to add mpls pipe entry: %s", doca_error_get_descr(result));
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
        num_of_entries++;
 
        result = create_gre_pipe(ports[port_id], port_id, &gre_pipe);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to add gre pipe: %s", doca_error_get_descr(result));
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
 
        result = add_gre_pipe_entry(gre_pipe, &status);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to add gre pipe entry: %s", doca_error_get_descr(result));
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
        num_of_entries++;
 
        result = create_nvgre_pipe_and_entry(ports[port_id], port_id, &status, &num_of_entries, &nvgre_pipe);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to add gre pipe or entry: %s", doca_error_get_descr(result));
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
 
        result = create_control_pipe(ports[port_id], &control_pipe);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to create control pipe: %s", doca_error_get_descr(result));
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
 
        result = add_control_pipe_entries(control_pipe,
                          vxlan_pipe,
                          vxlan_gpe_pipe,
                          mpls_pipe,
                          gre_pipe,
                          nvgre_pipe,
                          &status,
                          &num_of_entries,
                          shared_counter_ids[port_id]);
        if (result != DOCA_SUCCESS) {
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
 
        result = doca_flow_entries_process(ports[port_id], 0, DEFAULT_TIMEOUT_US, num_of_entries);
        if (result != DOCA_SUCCESS) {
            DOCA_LOG_ERR("Failed to process entries: %s", doca_error_get_descr(result));
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return result;
        }
 
        if (status.nb_processed != num_of_entries || status.failure) {
            DOCA_LOG_ERR("Failed to process entries");
            stop_doca_flow_ports(nb_ports, ports);
            doca_flow_destroy();
            return DOCA_ERROR_BAD_STATE;
        }
    }
 
    DOCA_LOG_INFO("Wait few seconds for packets to arrive");
    sleep(10);
 
    result = doca_flow_shared_resources_query(DOCA_FLOW_SHARED_RESOURCE_COUNTER,
                          shared_counter_ids,
                          query_results_array,
                          nb_ports);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to query entry: %s", doca_error_get_descr(result));
        stop_doca_flow_ports(nb_ports, ports);
        doca_flow_destroy();
        return result;
    }
 
    for (port_id = 0; port_id < nb_ports; port_id++) {
        DOCA_LOG_INFO("Port %d:", port_id);
        DOCA_LOG_INFO("Total bytes: %ld", query_results_array[port_id].counter.total_bytes);
        DOCA_LOG_INFO("Total packets: %ld", query_results_array[port_id].counter.total_pkts);
    }
 
    result = stop_doca_flow_ports(nb_ports, ports);
    doca_flow_destroy();
    return result;
}