[dpdk-dev] [PATCH v4 3/3] app/testpmd: use API to set max LRO packet size

[Dekel Peled <dekelp@mellanox.com>]

This patch implements use of the API for LRO aggregated packet
max size.
It adds command-line and runtime commands to configure this value,
and adds option to show the supported value.
Documentation is updated accordingly.

Signed-off-by: Dekel Peled <dekelp@mellanox.com>
---
 app/test-pmd/cmdline.c                      | 73 +++++++++++++++++++++++++++++
 app/test-pmd/config.c                       |  2 +
 app/test-pmd/parameters.c                   |  7 +++
 app/test-pmd/testpmd.c                      |  1 +
 doc/guides/testpmd_app_ug/run_app.rst       |  5 ++
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |  9 ++++
 6 files changed, 97 insertions(+)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 49c45a3..62bbc81 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -2037,6 +2037,78 @@ struct cmd_config_max_pkt_len_result {
 	},
 };
 
+/* *** config max LRO aggregated packet size *** */
+struct cmd_config_max_lro_pkt_size_result {
+	cmdline_fixed_string_t port;
+	cmdline_fixed_string_t keyword;
+	cmdline_fixed_string_t all;
+	cmdline_fixed_string_t name;
+	uint32_t value;
+};
+
+static void
+cmd_config_max_lro_pkt_size_parsed(void *parsed_result,
+				__attribute__((unused)) struct cmdline *cl,
+				__attribute__((unused)) void *data)
+{
+	struct cmd_config_max_lro_pkt_size_result *res = parsed_result;
+	portid_t pid;
+
+	if (!all_ports_stopped()) {
+		printf("Please stop all ports first\n");
+		return;
+	}
+
+	RTE_ETH_FOREACH_DEV(pid) {
+		struct rte_port *port = &ports[pid];
+
+		if (!strcmp(res->name, "max-lro-pkt-size")) {
+			if (res->value ==
+					port->dev_conf.rxmode.max_lro_pkt_size)
+				return;
+
+			port->dev_conf.rxmode.max_lro_pkt_size = res->value;
+		} else {
+			printf("Unknown parameter\n");
+			return;
+		}
+	}
+
+	init_port_config();
+
+	cmd_reconfig_device_queue(RTE_PORT_ALL, 1, 1);
+}
+
+cmdline_parse_token_string_t cmd_config_max_lro_pkt_size_port =
+	TOKEN_STRING_INITIALIZER(struct cmd_config_max_lro_pkt_size_result,
+				 port, "port");
+cmdline_parse_token_string_t cmd_config_max_lro_pkt_size_keyword =
+	TOKEN_STRING_INITIALIZER(struct cmd_config_max_lro_pkt_size_result,
+				 keyword, "config");
+cmdline_parse_token_string_t cmd_config_max_lro_pkt_size_all =
+	TOKEN_STRING_INITIALIZER(struct cmd_config_max_lro_pkt_size_result,
+				 all, "all");
+cmdline_parse_token_string_t cmd_config_max_lro_pkt_size_name =
+	TOKEN_STRING_INITIALIZER(struct cmd_config_max_lro_pkt_size_result,
+				 name, "max-lro-pkt-size");
+cmdline_parse_token_num_t cmd_config_max_lro_pkt_size_value =
+	TOKEN_NUM_INITIALIZER(struct cmd_config_max_lro_pkt_size_result,
+			      value, UINT32);
+
+cmdline_parse_inst_t cmd_config_max_lro_pkt_size = {
+	.f = cmd_config_max_lro_pkt_size_parsed,
+	.data = NULL,
+	.help_str = "port config all max-lro-pkt-size <value>",
+	.tokens = {
+		(void *)&cmd_config_max_lro_pkt_size_port,
+		(void *)&cmd_config_max_lro_pkt_size_keyword,
+		(void *)&cmd_config_max_lro_pkt_size_all,
+		(void *)&cmd_config_max_lro_pkt_size_name,
+		(void *)&cmd_config_max_lro_pkt_size_value,
+		NULL,
+	},
+};
+
 /* *** configure port MTU *** */
 struct cmd_config_mtu_result {
 	cmdline_fixed_string_t port;
@@ -19025,6 +19097,7 @@ struct cmd_show_port_supported_ptypes_result {
 	(cmdline_parse_inst_t *)&cmd_config_rx_tx,
 	(cmdline_parse_inst_t *)&cmd_config_mtu,
 	(cmdline_parse_inst_t *)&cmd_config_max_pkt_len,
+	(cmdline_parse_inst_t *)&cmd_config_max_lro_pkt_size,
 	(cmdline_parse_inst_t *)&cmd_config_rx_mode_flag,
 	(cmdline_parse_inst_t *)&cmd_config_rss,
 	(cmdline_parse_inst_t *)&cmd_config_rxtx_ring_size,
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index b603974..e1e5cf7 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -616,6 +616,8 @@ static int bus_match_all(const struct rte_bus *bus, const void *data)
 	printf("Minimum size of RX buffer: %u\n", dev_info.min_rx_bufsize);
 	printf("Maximum configurable length of RX packet: %u\n",
 		dev_info.max_rx_pktlen);
+	printf("Maximum configurable size of LRO aggregated packet: %u\n",
+		dev_info.max_lro_pkt_size);
 	if (dev_info.max_vfs)
 		printf("Maximum number of VFs: %u\n", dev_info.max_vfs);
 	if (dev_info.max_vmdq_pools)
diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
index 9ea87c1..eda395b 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -107,6 +107,8 @@
 	printf("  --total-num-mbufs=N: set the number of mbufs to be allocated "
 	       "in mbuf pools.\n");
 	printf("  --max-pkt-len=N: set the maximum size of packet to N bytes.\n");
+	printf("  --max-lro-pkt-size=N: set the maximum LRO aggregated packet "
+	       "size to N bytes.\n");
 #ifdef RTE_LIBRTE_CMDLINE
 	printf("  --eth-peers-configfile=name: config file with ethernet addresses "
 	       "of peer ports.\n");
@@ -592,6 +594,7 @@
 		{ "mbuf-size",			1, 0, 0 },
 		{ "total-num-mbufs",		1, 0, 0 },
 		{ "max-pkt-len",		1, 0, 0 },
+		{ "max-lro-pkt-size",		1, 0, 0 },
 		{ "pkt-filter-mode",            1, 0, 0 },
 		{ "pkt-filter-report-hash",     1, 0, 0 },
 		{ "pkt-filter-size",            1, 0, 0 },
@@ -888,6 +891,10 @@
 						 "Invalid max-pkt-len=%d - should be > %d\n",
 						 n, RTE_ETHER_MIN_LEN);
 			}
+			if (!strcmp(lgopts[opt_idx].name, "max-lro-pkt-size")) {
+				n = atoi(optarg);
+				rx_mode.max_lro_pkt_size = (uint32_t) n;
+			}
 			if (!strcmp(lgopts[opt_idx].name, "pkt-filter-mode")) {
 				if (!strcmp(optarg, "signature"))
 					fdir_conf.mode =
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 5ba9741..3fe694f 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -419,6 +419,7 @@ struct fwd_engine * fwd_engines[] = {
 struct rte_eth_rxmode rx_mode = {
 	.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
 		/**< Default maximum frame length. */
+	.max_lro_pkt_size = RTE_ETHER_MAX_LEN,
 };
 
 struct rte_eth_txmode tx_mode = {
diff --git a/doc/guides/testpmd_app_ug/run_app.rst b/doc/guides/testpmd_app_ug/run_app.rst
index 00e0c2a..721f740 100644
--- a/doc/guides/testpmd_app_ug/run_app.rst
+++ b/doc/guides/testpmd_app_ug/run_app.rst
@@ -112,6 +112,11 @@ The command line options are:
 
     Set the maximum packet size to N bytes, where N >= 64. The default value is 1518.
 
+*   ``--max-lro-pkt-size=N``
+
+    Set the maximum LRO aggregated packet size to N bytes, where N >= 64.
+    The default value is 1518.
+
 *   ``--eth-peers-configfile=name``
 
     Use a configuration file containing the Ethernet addresses of the peer ports.
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index c68a742..0267295 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -2139,6 +2139,15 @@ Set the maximum packet length::
 
 This is equivalent to the ``--max-pkt-len`` command-line option.
 
+port config - max-lro-pkt-size
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Set the maximum LRO aggregated packet size::
+
+   testpmd> port config all max-lro-pkt-size (value)
+
+This is equivalent to the ``--max-lro-pkt-size`` command-line option.
+
 port config - Drop Packets
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-- 
1.8.3.1