[dpdk-dev] [PATCH 4/6] test-pmd: allow txpkts to be setup via command line

[Cyril Chemparathy <cchemparathy@tilera.com>]

We allow a new --txpkts command-line parameter to configure segment sizes when
in txonly or flowgen forwarding modes.

Signed-off-by: Cyril Chemparathy <cchemparathy@tilera.com>
---
 app/test-pmd/parameters.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
index 67081d7..ce90399 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -476,6 +476,52 @@ parse_ringnuma_config(const char *q_arg)
 	return 0;
 }
 
+static unsigned int
+parse_item_list(char* str, unsigned int max_items, unsigned int *parsed_items)
+{
+	unsigned int nb_item;
+	unsigned int value;
+	unsigned int i;
+	int value_ok;
+	char c;
+
+	/*
+	 * First parse all items in the list and store their value.
+	 */
+	value = 0;
+	nb_item = 0;
+	value_ok = 0;
+	for (i = 0; i < strlen(str); i++) {
+		c = str[i];
+		if ((c >= '0') && (c <= '9')) {
+			value = (unsigned int) (value * 10 + (c - '0'));
+			value_ok = 1;
+			continue;
+		}
+		if (c != ',') {
+			printf("character %c is not a decimal digit\n", c);
+			return (0);
+		}
+		if (! value_ok) {
+			printf("No valid value before comma\n");
+			return (0);
+		}
+		if (nb_item < max_items) {
+			parsed_items[nb_item] = value;
+			value_ok = 0;
+			value = 0;
+		}
+		nb_item++;
+	}
+
+	if (nb_item >= max_items)
+		rte_exit(EXIT_FAILURE, "too many txpkt segments!\n");
+
+	parsed_items[nb_item++] = value;
+
+	return (nb_item);
+}
+
 void
 launch_args_parse(int argc, char** argv)
 {
@@ -538,6 +584,7 @@ launch_args_parse(int argc, char** argv)
 		{ "tx-queue-stats-mapping",	1, 0, 0 },
 		{ "rx-queue-stats-mapping",	1, 0, 0 },
 		{ "no-flush-rx",	0, 0, 0 },
+		{ "txpkts",			1, 0, 0 },
 		{ 0, 0, 0, 0 },
 	};
 
@@ -983,6 +1030,16 @@ launch_args_parse(int argc, char** argv)
 						 "invalid RX queue statistics mapping config entered\n");
 				}
 			}
+			if (!strcmp(lgopts[opt_idx].name, "txpkts")) {
+				unsigned seg_lengths[RTE_MAX_SEGS_PER_PKT];
+				unsigned int nb_segs;
+
+				nb_segs = parse_item_list(optarg, RTE_MAX_SEGS_PER_PKT, seg_lengths);
+				if (nb_segs > 0)
+					set_tx_pkt_segments(seg_lengths, nb_segs);
+				else
+					rte_exit(EXIT_FAILURE, "bad txpkts\n");
+			}
 			if (!strcmp(lgopts[opt_idx].name, "no-flush-rx"))
 				no_flush_rx = 1;
 
-- 
1.8.3.1