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From: <skori@marvell.com>
To: Sunil Kumar Kori <skori@marvell.com>, Rakesh Kudurumalla
<rkudurumalla@marvell.com>
CC: <dev@dpdk.org>
Subject: [PATCH v11 08/12] app/graph: support neigh command line interfaces
Date: Thu, 19 Oct 2023 23:00:07 +0530
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From: Sunil Kumar Kori <skori@marvell.com>
Adds neigh module to configure arp/neigh. This module uses
ipv4_rewrite and ipv6_rewrite node to write neigh information.
Following commands are exposed:
- neigh add ipv4 <ip> <mac>
- neigh add ipv6 <ip> <mac>
- help neigh
Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
Signed-off-by: Rakesh Kudurumalla <rkudurumalla@marvell.com>
---
app/graph/cli.c | 3 +
app/graph/ethdev.c | 2 +
app/graph/meson.build | 1 +
app/graph/module_api.h | 2 +
app/graph/neigh.c | 358 +++++++++++++++++++++++++++++++++++++
app/graph/neigh.h | 17 ++
app/graph/neigh_priv.h | 49 +++++
doc/guides/tools/graph.rst | 11 ++
8 files changed, 443 insertions(+)
create mode 100644 app/graph/neigh.c
create mode 100644 app/graph/neigh.h
create mode 100644 app/graph/neigh_priv.h
diff --git a/app/graph/cli.c b/app/graph/cli.c
index 1280422388..f564362da1 100644
--- a/app/graph/cli.c
+++ b/app/graph/cli.c
@@ -34,6 +34,9 @@ cmdline_parse_ctx_t modules_ctx[] = {
(cmdline_parse_inst_t *)&ipv4_lookup_help_cmd_ctx,
(cmdline_parse_inst_t *)&ipv6_lookup_cmd_ctx,
(cmdline_parse_inst_t *)&ipv6_lookup_help_cmd_ctx,
+ (cmdline_parse_inst_t *)&neigh_v4_cmd_ctx,
+ (cmdline_parse_inst_t *)&neigh_v6_cmd_ctx,
+ (cmdline_parse_inst_t *)&neigh_help_cmd_ctx,
NULL,
};
diff --git a/app/graph/ethdev.c b/app/graph/ethdev.c
index e3f9ee3e0c..c9b09168c1 100644
--- a/app/graph/ethdev.c
+++ b/app/graph/ethdev.c
@@ -166,6 +166,8 @@ ethdev_stop(void)
ethdev_list_clean();
route_ip4_list_clean();
route_ip6_list_clean();
+ neigh4_list_clean();
+ neigh6_list_clean();
printf("Bye...\n");
}
diff --git a/app/graph/meson.build b/app/graph/meson.build
index 413bbefc4e..8fa9d605b9 100644
--- a/app/graph/meson.build
+++ b/app/graph/meson.build
@@ -17,5 +17,6 @@ sources = files(
'ip6_route.c',
'main.c',
'mempool.c',
+ 'neigh.c',
'utils.c',
)
diff --git a/app/graph/module_api.h b/app/graph/module_api.h
index bd4d245c75..e9e42da7cc 100644
--- a/app/graph/module_api.h
+++ b/app/graph/module_api.h
@@ -12,8 +12,10 @@
#include "conn.h"
#include "ethdev.h"
#include "mempool.h"
+#include "neigh.h"
#include "route.h"
#include "utils.h"
+
/*
* Externs
*/
diff --git a/app/graph/neigh.c b/app/graph/neigh.c
new file mode 100644
index 0000000000..0cee502719
--- /dev/null
+++ b/app/graph/neigh.c
@@ -0,0 +1,358 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Marvell.
+ */
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <cmdline_parse.h>
+#include <cmdline_parse_num.h>
+#include <cmdline_parse_string.h>
+#include <cmdline_socket.h>
+#include <rte_ethdev.h>
+#include <rte_node_ip4_api.h>
+#include <rte_node_ip6_api.h>
+
+#include "neigh_priv.h"
+#include "module_api.h"
+
+static const char
+cmd_neigh_v4_help[] = "neigh add ipv4 <ip> <mac>";
+
+static const char
+cmd_neigh_v6_help[] = "neigh add ipv6 <ip> <mac>";
+
+struct neigh4_head neigh4 = TAILQ_HEAD_INITIALIZER(neigh4);
+struct neigh6_head neigh6 = TAILQ_HEAD_INITIALIZER(neigh6);
+
+void
+neigh4_list_clean(void)
+{
+ struct neigh_ipv4_config *v4_config;
+
+ while (!TAILQ_EMPTY(&neigh4)) {
+ v4_config = TAILQ_FIRST(&neigh4);
+ TAILQ_REMOVE(&neigh4, v4_config, next);
+ }
+}
+
+void
+neigh6_list_clean(void)
+{
+ struct neigh_ipv6_config *v6_config;
+
+ while (!TAILQ_EMPTY(&neigh6)) {
+ v6_config = TAILQ_FIRST(&neigh6);
+ TAILQ_REMOVE(&neigh6, v6_config, next);
+ }
+}
+
+static struct neigh_ipv4_config *
+find_neigh4_entry(uint32_t ip, uint64_t mac)
+{
+ struct neigh_ipv4_config *v4_config;
+
+ TAILQ_FOREACH(v4_config, &neigh4, next) {
+ if ((v4_config->ip == ip) && (v4_config->mac == mac))
+ return v4_config;
+ }
+ return NULL;
+}
+
+static struct neigh_ipv6_config *
+find_neigh6_entry(uint8_t *ip, uint64_t mac)
+{
+ struct neigh_ipv6_config *v6_config;
+
+ TAILQ_FOREACH(v6_config, &neigh6, next) {
+ if (!(memcmp(v6_config->ip, ip, 16)) && (v6_config->mac == mac))
+ return v6_config;
+ }
+ return NULL;
+}
+
+static int
+ip6_rewrite_node_add(struct neigh_ipv6_config *v6_config)
+{
+ uint8_t data[2 * RTE_ETHER_ADDR_LEN];
+ uint8_t len = 2 * RTE_ETHER_ADDR_LEN;
+ struct rte_ether_addr smac;
+ int16_t portid = 0;
+ int rc;
+
+ portid = ethdev_portid_by_ip6(v6_config->ip, NULL);
+ if (portid < 0) {
+ printf("Invalid portid found to add neigh\n");
+ return -EINVAL;
+ }
+
+ memset(data, 0, len);
+
+ /* Copy dst mac */
+ rte_memcpy((void *)&data[0], (void *)&v6_config->mac, RTE_ETHER_ADDR_LEN);
+
+ /* Copy src mac */
+ rc = rte_eth_macaddr_get(portid, &smac);
+ if (rc < 0)
+ return rc;
+
+ rte_memcpy(&data[RTE_ETHER_ADDR_LEN], smac.addr_bytes, RTE_ETHER_ADDR_LEN);
+
+ return rte_node_ip6_rewrite_add(portid, data, len, portid);
+}
+
+static int
+ip4_rewrite_node_add(struct neigh_ipv4_config *v4_config)
+{
+ uint8_t data[2 * RTE_ETHER_ADDR_LEN];
+ uint8_t len = 2 * RTE_ETHER_ADDR_LEN;
+ struct rte_ether_addr smac;
+ int16_t portid = 0;
+ int rc;
+
+ portid = ethdev_portid_by_ip4(v4_config->ip, 0);
+ if (portid < 0) {
+ printf("Invalid portid found to add neigh\n");
+ return -EINVAL;
+ }
+
+ memset(data, 0, len);
+
+ /* Copy dst mac */
+ rte_memcpy((void *)&data[0], (void *)&v4_config->mac, RTE_ETHER_ADDR_LEN);
+
+ /* Copy src mac */
+ rc = rte_eth_macaddr_get(portid, &smac);
+ if (rc < 0) {
+ printf("Cannot get MAC address: err=%d, port=%d\n", rc, portid);
+ return rc;
+ }
+
+ rte_memcpy(&data[RTE_ETHER_ADDR_LEN], smac.addr_bytes, RTE_ETHER_ADDR_LEN);
+
+ return rte_node_ip4_rewrite_add(portid, data, len, portid);
+}
+
+
+static int
+neigh_ip4_add(uint32_t ip, uint64_t mac)
+{
+ struct neigh_ipv4_config *v4_config;
+ int rc = -EINVAL;
+
+ v4_config = find_neigh4_entry(ip, mac);
+
+ if (!v4_config) {
+ v4_config = malloc(sizeof(struct neigh_ipv4_config));
+ if (!v4_config)
+ return -ENOMEM;
+ }
+
+ v4_config->ip = ip;
+ v4_config->mac = mac;
+ v4_config->is_used = true;
+
+ /* FIXME: Get graph status here and then update table */
+ rc = ip4_rewrite_node_add(v4_config);
+ if (rc)
+ goto free;
+
+ TAILQ_INSERT_TAIL(&neigh4, v4_config, next);
+ return 0;
+free:
+ free(v4_config);
+ return rc;
+}
+
+static int
+neigh_ip6_add(uint8_t *ip, uint64_t mac)
+{
+ struct neigh_ipv6_config *v6_config;
+ int rc = -EINVAL;
+ int j;
+
+ v6_config = find_neigh6_entry(ip, mac);
+
+ if (!v6_config) {
+ v6_config = malloc(sizeof(struct neigh_ipv6_config));
+ if (!v6_config)
+ return -ENOMEM;
+ }
+
+ for (j = 0; j < ETHDEV_IPV6_ADDR_LEN; j++)
+ v6_config->ip[j] = ip[j];
+
+ v6_config->mac = mac;
+ v6_config->is_used = true;
+
+ /* FIXME: Get graph status here and then update table */
+ rc = ip6_rewrite_node_add(v6_config);
+ if (rc)
+ goto free;
+
+ TAILQ_INSERT_TAIL(&neigh6, v6_config, next);
+ return 0;
+free:
+ free(v6_config);
+ return rc;
+}
+
+int
+neigh_ip4_add_to_rewrite(void)
+{
+ struct neigh_ipv4_config *neigh;
+ int rc;
+
+ TAILQ_FOREACH(neigh, &neigh4, next) {
+ rc = ip4_rewrite_node_add(neigh);
+ if (rc)
+ return rc;
+ }
+ return 0;
+}
+
+int
+neigh_ip6_add_to_rewrite(void)
+{
+ struct neigh_ipv6_config *neigh;
+ int rc;
+
+
+ TAILQ_FOREACH(neigh, &neigh6, next) {
+ rc = ip6_rewrite_node_add(neigh);
+ if (rc < 0)
+ return rc;
+ }
+
+ return 0;
+}
+
+static void
+cli_neigh_v4(void *parsed_result, __rte_unused struct cmdline *cl, void *data __rte_unused)
+{
+ struct neigh_v4_cmd_tokens *res = parsed_result;
+ int rc = -EINVAL;
+ uint64_t mac;
+ uint32_t ip;
+
+ if (parser_ip4_read(&ip, res->ip)) {
+ printf(MSG_ARG_INVALID, "ip");
+ return;
+ }
+
+ if (parser_mac_read(&mac, res->mac)) {
+ printf(MSG_ARG_INVALID, "mac");
+ return;
+ }
+
+ rc = neigh_ip4_add(ip, mac);
+ if (rc < 0)
+ printf(MSG_CMD_FAIL, res->cmd);
+}
+
+static void
+cli_neigh_v6(void *parsed_result, __rte_unused struct cmdline *cl, void *data __rte_unused)
+{
+ struct neigh_v6_cmd_tokens *res = parsed_result;
+ uint8_t ip[ETHDEV_IPV6_ADDR_LEN];
+ int rc = -EINVAL;
+ uint64_t mac;
+
+ if (parser_ip6_read(ip, res->ip)) {
+ printf(MSG_ARG_INVALID, "ip");
+ return;
+ }
+
+ if (parser_mac_read(&mac, res->mac)) {
+ printf(MSG_ARG_INVALID, "mac");
+ return;
+ }
+
+ rc = neigh_ip6_add(ip, mac);
+ if (rc < 0)
+ printf(MSG_CMD_FAIL, res->cmd);
+}
+
+static void
+cli_neigh_help(__rte_unused void *parsed_result, __rte_unused struct cmdline *cl,
+ __rte_unused void *data)
+{
+ size_t len;
+
+ len = strlen(conn->msg_out);
+ conn->msg_out += len;
+ snprintf(conn->msg_out, conn->msg_out_len_max, "\n%s\n%s\n%s\n",
+ "--------------------------- neigh command help ---------------------------",
+ cmd_neigh_v4_help, cmd_neigh_v6_help);
+
+ len = strlen(conn->msg_out);
+ conn->msg_out_len_max -= len;
+}
+
+cmdline_parse_token_string_t neigh_v4_cmd =
+ TOKEN_STRING_INITIALIZER(struct neigh_v4_cmd_tokens, cmd, "neigh");
+cmdline_parse_token_string_t neigh_v4_add =
+ TOKEN_STRING_INITIALIZER(struct neigh_v4_cmd_tokens, add, "add");
+cmdline_parse_token_string_t neigh_v4_ip4 =
+ TOKEN_STRING_INITIALIZER(struct neigh_v4_cmd_tokens, ip4, "ipv4");
+cmdline_parse_token_string_t neigh_v4_ip =
+ TOKEN_STRING_INITIALIZER(struct neigh_v4_cmd_tokens, ip, NULL);
+cmdline_parse_token_string_t neigh_v4_mac =
+ TOKEN_STRING_INITIALIZER(struct neigh_v4_cmd_tokens, mac, NULL);
+
+cmdline_parse_inst_t neigh_v4_cmd_ctx = {
+ .f = cli_neigh_v4,
+ .data = NULL,
+ .help_str = cmd_neigh_v4_help,
+ .tokens = {
+ (void *)&neigh_v4_cmd,
+ (void *)&neigh_v4_add,
+ (void *)&neigh_v4_ip4,
+ (void *)&neigh_v4_ip,
+ (void *)&neigh_v4_mac,
+ NULL,
+ },
+};
+
+cmdline_parse_token_string_t neigh_v6_cmd =
+ TOKEN_STRING_INITIALIZER(struct neigh_v6_cmd_tokens, cmd, "neigh");
+cmdline_parse_token_string_t neigh_v6_add =
+ TOKEN_STRING_INITIALIZER(struct neigh_v6_cmd_tokens, add, "add");
+cmdline_parse_token_string_t neigh_v6_ip6 =
+ TOKEN_STRING_INITIALIZER(struct neigh_v6_cmd_tokens, ip6, "ipv6");
+cmdline_parse_token_string_t neigh_v6_ip =
+ TOKEN_STRING_INITIALIZER(struct neigh_v6_cmd_tokens, ip, NULL);
+cmdline_parse_token_string_t neigh_v6_mac =
+ TOKEN_STRING_INITIALIZER(struct neigh_v6_cmd_tokens, mac, NULL);
+
+cmdline_parse_inst_t neigh_v6_cmd_ctx = {
+ .f = cli_neigh_v6,
+ .data = NULL,
+ .help_str = cmd_neigh_v6_help,
+ .tokens = {
+ (void *)&neigh_v6_cmd,
+ (void *)&neigh_v6_add,
+ (void *)&neigh_v6_ip6,
+ (void *)&neigh_v6_ip,
+ (void *)&neigh_v6_mac,
+ NULL,
+ },
+};
+
+cmdline_parse_token_string_t neigh_help_cmd =
+ TOKEN_STRING_INITIALIZER(struct neigh_help_cmd_tokens, cmd, "help");
+cmdline_parse_token_string_t neigh_help_module =
+ TOKEN_STRING_INITIALIZER(struct neigh_help_cmd_tokens, module, "neigh");
+
+cmdline_parse_inst_t neigh_help_cmd_ctx = {
+ .f = cli_neigh_help,
+ .data = NULL,
+ .help_str = "",
+ .tokens = {
+ (void *)&neigh_help_cmd,
+ (void *)&neigh_help_module,
+ NULL,
+ },
+};
diff --git a/app/graph/neigh.h b/app/graph/neigh.h
new file mode 100644
index 0000000000..928981fc31
--- /dev/null
+++ b/app/graph/neigh.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Marvell.
+ */
+
+#ifndef APP_GRAPH_NEIGH_H
+#define APP_GRAPH_NEIGH_H
+
+extern cmdline_parse_inst_t neigh_v4_cmd_ctx;
+extern cmdline_parse_inst_t neigh_v6_cmd_ctx;
+extern cmdline_parse_inst_t neigh_help_cmd_ctx;
+
+void neigh4_list_clean(void);
+void neigh6_list_clean(void);
+int neigh_ip4_add_to_rewrite(void);
+int neigh_ip6_add_to_rewrite(void);
+
+#endif
diff --git a/app/graph/neigh_priv.h b/app/graph/neigh_priv.h
new file mode 100644
index 0000000000..0ec9b1510f
--- /dev/null
+++ b/app/graph/neigh_priv.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Marvell.
+ */
+
+#ifndef APP_GRAPH_NEIGH_PRIV_H
+#define APP_GRAPH_NEIGH_PRIV_H
+
+#define MAX_NEIGH_ENTRIES 32
+
+struct neigh_v4_cmd_tokens {
+ cmdline_fixed_string_t cmd;
+ cmdline_fixed_string_t add;
+ cmdline_fixed_string_t ip4;
+ cmdline_fixed_string_t ip;
+ cmdline_fixed_string_t mac;
+};
+
+struct neigh_v6_cmd_tokens {
+ cmdline_fixed_string_t cmd;
+ cmdline_fixed_string_t add;
+ cmdline_fixed_string_t ip6;
+ cmdline_fixed_string_t ip;
+ cmdline_fixed_string_t mac;
+};
+
+struct neigh_help_cmd_tokens {
+ cmdline_fixed_string_t cmd;
+ cmdline_fixed_string_t module;
+};
+
+struct neigh_ipv4_config {
+ TAILQ_ENTRY(neigh_ipv4_config) next;
+ uint32_t ip;
+ uint64_t mac;
+ bool is_used;
+};
+
+TAILQ_HEAD(neigh4_head, neigh_ipv4_config);
+
+struct neigh_ipv6_config {
+ TAILQ_ENTRY(neigh_ipv6_config) next;
+ uint8_t ip[16];
+ uint64_t mac;
+ bool is_used;
+};
+
+TAILQ_HEAD(neigh6_head, neigh_ipv6_config);
+
+#endif
diff --git a/doc/guides/tools/graph.rst b/doc/guides/tools/graph.rst
index 56c2eaad26..b1bd2e6048 100644
--- a/doc/guides/tools/graph.rst
+++ b/doc/guides/tools/graph.rst
@@ -130,6 +130,17 @@ file to express the requested use case configuration.
| help ipv6_lookup | | Command to dump ``ipv6_lookup`` | Yes | Yes |
| | | help message. | | |
+--------------------------------------+-----------------------------------+---------+----------+
+ | neigh add ipv4 <ip> <mac> | | Command to add a neighbour | Yes | Yes |
+ | | | information into | | |
+ | | | ``ipv4_rewrite`` node. | | |
+ +--------------------------------------+-----------------------------------+---------+----------+
+ | neigh add ipv6 <ip> <mac> | | Command to add a neighbour | Yes | Yes |
+ | | | information into | | |
+ | | | ``ipv6_rewrite`` node. | | |
+ +--------------------------------------+-----------------------------------+---------+----------+
+ | help neigh | | Command to dump neigh help | Yes | Yes |
+ | | | message. | | |
+ +--------------------------------------+-----------------------------------+---------+----------+
Runtime configuration
---------------------
--
2.25.1