app/testpmd: add ethernet peer command

This command will simulate the process of setting the
eth-peer from command line.

It will be useful to perform extra testing.

usage:
 testpmd> set eth-peer <port_id> <peer_addr>.

Signed-off-by: Wisam Jaddo <wisamm@mellanox.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

app/test-pmd/cmdline.c

@@ -486,6 +486,9 @@ static void cmd_help_long_parsed(void *parsed_result,
 			"set vf mac addr (port_id) (vf_id) (XX:XX:XX:XX:XX:XX)\n"
 			"    Set the MAC address for a VF from the PF.\n\n"
 
+			"set eth-peer (port_id) (peer_addr)\n"
+			"    set the peer address for certain port.\n\n"
+
 			"set port (port_id) uta (mac_address|all) (on|off)\n"
 			"    Add/Remove a or all unicast hash filter(s)"
 			"from port X.\n\n"
@@ -7182,6 +7185,50 @@ cmdline_parse_inst_t cmd_mac_addr = {
 	},
 };
 
+/* *** SET THE PEER ADDRESS FOR CERTAIN PORT *** */
+struct cmd_eth_peer_result {
+	cmdline_fixed_string_t set;
+	cmdline_fixed_string_t eth_peer;
+	portid_t port_id;
+	cmdline_fixed_string_t peer_addr;
+};
+
+static void cmd_set_eth_peer_parsed(void *parsed_result,
+			__attribute__((unused)) struct cmdline *cl,
+			__attribute__((unused)) void *data)
+{
+		struct cmd_eth_peer_result *res = parsed_result;
+
+		if (test_done == 0) {
+			printf("Please stop forwarding first\n");
+			return;
+		}
+		if (!strcmp(res->eth_peer, "eth-peer")) {
+			set_fwd_eth_peer(res->port_id, res->peer_addr);
+			fwd_config_setup();
+		}
+}
+cmdline_parse_token_string_t cmd_eth_peer_set =
+	TOKEN_STRING_INITIALIZER(struct cmd_eth_peer_result, set, "set");
+cmdline_parse_token_string_t cmd_eth_peer =
+	TOKEN_STRING_INITIALIZER(struct cmd_eth_peer_result, eth_peer, "eth-peer");
+cmdline_parse_token_num_t cmd_eth_peer_port_id =
+	TOKEN_NUM_INITIALIZER(struct cmd_eth_peer_result, port_id, UINT16);
+cmdline_parse_token_string_t cmd_eth_peer_addr =
+	TOKEN_STRING_INITIALIZER(struct cmd_eth_peer_result, peer_addr, NULL);
+
+cmdline_parse_inst_t cmd_set_fwd_eth_peer = {
+	.f = cmd_set_eth_peer_parsed,
+	.data = NULL,
+	.help_str = "set eth-peer <port_id> <peer_mac>",
+	.tokens = {
+		(void *)&cmd_eth_peer_set,
+		(void *)&cmd_eth_peer,
+		(void *)&cmd_eth_peer_port_id,
+		(void *)&cmd_eth_peer_addr,
+		NULL,
+	},
+};
 
 /* *** CONFIGURE QUEUE STATS COUNTER MAPPINGS *** */
 struct cmd_set_qmap_result {
@@ -15706,6 +15753,7 @@ cmdline_parse_ctx_t main_ctx[] = {
 	(cmdline_parse_inst_t *)&cmd_read_rxd_txd,
 	(cmdline_parse_inst_t *)&cmd_stop,
 	(cmdline_parse_inst_t *)&cmd_mac_addr,
+	(cmdline_parse_inst_t *)&cmd_set_fwd_eth_peer,
 	(cmdline_parse_inst_t *)&cmd_set_qmap,
 	(cmdline_parse_inst_t *)&cmd_set_xstats_hide_zero,
 	(cmdline_parse_inst_t *)&cmd_operate_port,

app/test-pmd/config.c

@@ -78,6 +78,7 @@
 #include <rte_pmd_bnxt.h>
 #endif
 #include <rte_gro.h>
+#include <cmdline_parse_etheraddr.h>
 
 #include "testpmd.h"
 
@@ -2238,6 +2239,24 @@ pkt_fwd_config_display(struct fwd_config *cfg)
 	printf("\n");
 }
 
+void
+set_fwd_eth_peer(portid_t port_id, char *peer_addr)
+{
+	uint8_t c, new_peer_addr[6];
+	if (!rte_eth_dev_is_valid_port(port_id)) {
+		printf("Error: Invalid port number %i\n", port_id);
+		return;
+	}
+	if (cmdline_parse_etheraddr(NULL, peer_addr, &new_peer_addr,
+					sizeof(new_peer_addr)) < 0) {
+		printf("Error: Invalid ethernet address: %s\n", peer_addr);
+		return;
+	}
+	for (c = 0; c < 6; c++)
+		peer_eth_addrs[port_id].addr_bytes[c] =
+			new_peer_addr[c];
+}
+
 int
 set_fwd_lcores_list(unsigned int *lcorelist, unsigned int nb_lc)
 {

app/test-pmd/testpmd.h

@@ -553,6 +553,8 @@ void set_def_fwd_config(void);
 void reconfig(portid_t new_port_id, unsigned socket_id);
 int init_fwd_streams(void);
 
+void set_fwd_eth_peer(portid_t port_id, char *peer_addr);
+
 void port_mtu_set(portid_t port_id, uint16_t mtu);
 void port_reg_bit_display(portid_t port_id, uint32_t reg_off, uint8_t bit_pos);
 void port_reg_bit_set(portid_t port_id, uint32_t reg_off, uint8_t bit_pos,

doc/guides/testpmd_app_ug/testpmd_funcs.rst

@@ -1089,6 +1089,15 @@ Set the MAC address for a VF from the PF::
 
    testpmd> set vf mac addr (port_id) (vf_id) (XX:XX:XX:XX:XX:XX)
 
+set eth-peer
+~~~~~~~~~~~~
+
+Set the forwarding peer address for certain port::
+
+   testpmd> set eth-peer (port_id) (perr_addr)
+
+This is equivalent to the ``--eth-peer`` command-line option.
+
 set port-uta
 ~~~~~~~~~~~~