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 <dek...@mellanox.com>
---
 app/test-pmd/cmdline.c                      | 73 +++++++++++++++++++++++++++++
 app/test-pmd/config.c                       |  2 +
 app/test-pmd/parameters.c                   |  5 ++
 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, 95 insertions(+)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 4478069..edfa60f 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;
@@ -19024,6 +19096,7 @@ 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 efe2812..50e6ac0 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -629,6 +629,8 @@ 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..3e371e2 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -592,6 +592,7 @@
                { "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 +889,10 @@
                                                 "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 38acbc5..d4f67ec 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

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