[PATCH v2 2/3] app/graph: add ethdev forward command

[Rakesh Kudurumalla]

Adds a txport to forward packet for every rxport

Mapping will be used to forward packets to txport
received on rxport

Following commands are exposed:
        - ethdev forward <tx_dev_name> <rx_dev_name>"

Signed-off-by: Rakesh Kudurumalla <rkuduruma...@marvell.com>
---
 app/graph/cli.c         |  1 +
 app/graph/ethdev.c      | 62 +++++++++++++++++++++++++++++++++++++++++
 app/graph/ethdev.h      |  1 +
 app/graph/ethdev_priv.h |  8 ++++++
 4 files changed, 72 insertions(+)

diff --git a/app/graph/cli.c b/app/graph/cli.c
index 30b12312d6..76f5b8e670 100644
--- a/app/graph/cli.c
+++ b/app/graph/cli.c
@@ -32,6 +32,7 @@ cmdline_parse_ctx_t modules_ctx[] = {
        (cmdline_parse_inst_t *)&ethdev_prom_mode_cmd_ctx,
        (cmdline_parse_inst_t *)&ethdev_ip4_cmd_ctx,
        (cmdline_parse_inst_t *)&ethdev_ip6_cmd_ctx,
+       (cmdline_parse_inst_t *)&ethdev_forward_cmd_ctx,
        (cmdline_parse_inst_t *)&ethdev_cmd_ctx,
        (cmdline_parse_inst_t *)&ethdev_help_cmd_ctx,
        (cmdline_parse_inst_t *)&ethdev_rx_cmd_ctx,
diff --git a/app/graph/ethdev.c b/app/graph/ethdev.c
index c9b09168c1..bceee659a2 100644
--- a/app/graph/ethdev.c
+++ b/app/graph/ethdev.c
@@ -38,6 +38,10 @@ cmd_ethdev_ip4_addr_help[] = "ethdev <ethdev_name> ip4 addr 
add <ip> netmask <ma
 static const char
 cmd_ethdev_ip6_addr_help[] = "ethdev <ethdev_name> ip6 addr add <ip> netmask 
<mask>";
 
+static const char
+cmd_ethdev_forward_help[] = "ethdev forward <tx_dev_name> <rx_dev_name>";
+
+
 static struct rte_eth_conf port_conf_default = {
        .link_speeds = 0,
        .rxmode = {
@@ -888,3 +892,61 @@ cmdline_parse_inst_t ethdev_help_cmd_ctx = {
                NULL,
        },
 };
+
+static int
+ethdev_forward_config(char *tx_name, char *rx_name)
+{
+       struct ethdev *port;
+       uint16_t portid_rx = 0;
+       uint16_t portid_tx = 0;
+       int rc = -EINVAL;
+
+       rc = rte_eth_dev_get_port_by_name(tx_name, &portid_tx);
+       if (rc < 0)
+               return rc;
+
+       rc = rte_eth_dev_get_port_by_name(rx_name, &portid_rx);
+       if (rc < 0)
+               return rc;
+
+       port = ethdev_port_by_id(portid_rx);
+       if (port) {
+               port->config.tx_port_id = portid_tx;
+               rc = 0;
+       }
+
+       return rc;
+}
+
+static void
+cli_ethdev_forward(void *parsed_result, __rte_unused struct cmdline *cl, void 
*data __rte_unused)
+{
+       struct ethdev_fwd_cmd_tokens *res = parsed_result;
+       int rc = -EINVAL;
+
+       rc = ethdev_forward_config(res->tx_dev, res->rx_dev);
+       if (rc < 0)
+               printf(MSG_CMD_FAIL, res->cmd);
+}
+
+cmdline_parse_token_string_t ethdev_l2_cmd =
+       TOKEN_STRING_INITIALIZER(struct ethdev_fwd_cmd_tokens, cmd, "ethdev");
+cmdline_parse_token_string_t ethdev_fwd_cmd =
+       TOKEN_STRING_INITIALIZER(struct ethdev_fwd_cmd_tokens, fwd, "forward");
+cmdline_parse_token_string_t ethdev_tx_device =
+       TOKEN_STRING_INITIALIZER(struct ethdev_fwd_cmd_tokens, tx_dev, NULL);
+cmdline_parse_token_string_t ethdev_rx_device =
+       TOKEN_STRING_INITIALIZER(struct ethdev_fwd_cmd_tokens, rx_dev, NULL);
+
+cmdline_parse_inst_t ethdev_forward_cmd_ctx = {
+       .f = cli_ethdev_forward,
+       .data = NULL,
+       .help_str = cmd_ethdev_forward_help,
+       .tokens = {
+              (void *)&ethdev_l2_cmd,
+              (void *)&ethdev_fwd_cmd,
+              (void *)&ethdev_tx_device,
+              (void *)&ethdev_rx_device,
+              NULL,
+       },
+};
diff --git a/app/graph/ethdev.h b/app/graph/ethdev.h
index 94d3247a2c..836052046b 100644
--- a/app/graph/ethdev.h
+++ b/app/graph/ethdev.h
@@ -15,6 +15,7 @@ extern cmdline_parse_inst_t ethdev_mtu_cmd_ctx;
 extern cmdline_parse_inst_t ethdev_prom_mode_cmd_ctx;
 extern cmdline_parse_inst_t ethdev_ip4_cmd_ctx;
 extern cmdline_parse_inst_t ethdev_ip6_cmd_ctx;
+extern cmdline_parse_inst_t ethdev_forward_cmd_ctx;
 extern cmdline_parse_inst_t ethdev_cmd_ctx;
 extern cmdline_parse_inst_t ethdev_help_cmd_ctx;
 
diff --git a/app/graph/ethdev_priv.h b/app/graph/ethdev_priv.h
index f231f3f3e1..e5e5fbc9ae 100644
--- a/app/graph/ethdev_priv.h
+++ b/app/graph/ethdev_priv.h
@@ -61,6 +61,13 @@ struct ethdev_ip6_cmd_tokens {
        cmdline_fixed_string_t mask;
 };
 
+struct ethdev_fwd_cmd_tokens {
+       cmdline_fixed_string_t cmd;
+       cmdline_fixed_string_t fwd;
+       cmdline_fixed_string_t tx_dev;
+       cmdline_fixed_string_t rx_dev;
+};
+
 struct ethdev_cmd_tokens {
        cmdline_fixed_string_t cmd;
        cmdline_fixed_string_t dev;
@@ -98,6 +105,7 @@ struct ethdev_config {
                uint32_t queue_size;
        } tx;
 
+       uint16_t tx_port_id;
        int promiscuous;
        uint32_t mtu;
 };
-- 
2.25.1