[PATCH V4 5/7] app/testpmd: compact RSS types output in some commands

[Huisong Li <lihuisong@huawei.com>]

From: Ferruh Yigit <ferruh.yigit@xilinx.com>

In port info command output, 'show port info all', supported RSS offload
types printed one type per line, and although this information is not
most important part of the command it takes big part of the command
output.

In port RSS hash and flow RSS command output, 'show port 0 rss-hash',
and 'flow query 0 0 rss', all enabled RSS types are printed on one line.
If there are many types, the print will be very long.

Compacting these RSS offloads and types output by fixing the length of the
character string printed on each line, instead of one per line or one line.
Output becomes as following:

Supported RSS offload flow types:
  ipv4-frag  ipv4-tcp  ipv4-udp  ipv4-sctp  ipv4-other
  ipv6-frag  ipv6-tcp  ipv6-udp  ipv6-sctp  ipv6-other
  l4-dst-only  l4-src-only  l3-dst-only  l3-src-only

Signed-off-by: Ferruh Yigit <ferruh.yigit@xilinx.com>
Signed-off-by: Huisong Li <lihuisong@huawei.com>
---
 app/test-pmd/config.c  | 68 +++++++++++++++++++++++++++++++-----------
 app/test-pmd/testpmd.h |  2 ++
 2 files changed, 52 insertions(+), 18 deletions(-)

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index a0a5f12c71..b3cb68003c 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -699,6 +699,38 @@ rsstypes_to_str(uint64_t rss_type)
 	return NULL;
 }
 
+static void
+rss_offload_types_display(uint64_t offload_types, uint16_t char_num_per_line)
+{
+	uint16_t unknown_offload_str_len;
+	uint16_t total_len = 0;
+	uint16_t str_len = 0;
+	uint64_t rss_offload;
+	uint16_t i;
+
+	for (i = 0; i < sizeof(offload_types) * CHAR_BIT; i++) {
+		rss_offload = RTE_BIT64(i);
+		if ((offload_types & rss_offload) != 0) {
+			const char *p = rsstypes_to_str(rss_offload);
+
+			unknown_offload_str_len =
+				strlen("unknown_offload(BIT())") + (i / 10 + 1);
+			str_len = p ? strlen(p) : unknown_offload_str_len;
+			str_len += 2; /* add two spaces */
+			if (total_len + str_len >= char_num_per_line) {
+				total_len = 0;
+				printf("\n");
+			}
+
+			if (p)
+				printf("  %s", p);
+			else
+				printf("  unknown_offload(BIT(%u))", i);
+			total_len += str_len;
+		}
+	}
+}
+
 void
 port_infos_display(portid_t port_id)
 {
@@ -803,21 +835,10 @@ port_infos_display(portid_t port_id)
 	if (!dev_info.flow_type_rss_offloads)
 		printf("No RSS offload flow type is supported.\n");
 	else {
-		uint64_t rss_offload_types = dev_info.flow_type_rss_offloads;
-		uint16_t i;
-
 		printf("Supported RSS offload flow types:\n");
-		for (i = 0; i < sizeof(rss_offload_types) * CHAR_BIT; i++) {
-			uint64_t rss_offload = RTE_BIT64(i);
-			if ((rss_offload_types & rss_offload) != 0) {
-				const char *p = rsstypes_to_str(rss_offload);
-				if (p)
-					printf("  %s\n", p);
-				else
-					printf("  unknown_offload(BIT(%u))\n",
-					       i);
-			}
-		}
+		rss_offload_types_display(dev_info.flow_type_rss_offloads,
+				TESTPMD_RSS_TYPES_CHAR_NUM_PER_LINE);
+		printf("\n");
 	}
 
 	printf("Minimum size of RX buffer: %u\n", dev_info.min_rx_bufsize);
@@ -1570,8 +1591,10 @@ port_flow_complain(struct rte_flow_error *error)
 }
 
 static void
-rss_types_display(uint64_t rss_types)
+rss_types_display(uint64_t rss_types, uint16_t char_num_per_line)
 {
+	uint16_t total_len = 0;
+	uint16_t str_len;
 	uint16_t i;
 
 	if (rss_types == 0)
@@ -1580,9 +1603,18 @@ rss_types_display(uint64_t rss_types)
 	for (i = 0; rss_type_table[i].str; i++) {
 		if (rss_type_table[i].rss_type == 0)
 			continue;
+
 		if ((rss_types & rss_type_table[i].rss_type) ==
-						rss_type_table[i].rss_type)
+					rss_type_table[i].rss_type) {
+			/* contain two spces */
+			str_len = strlen(rss_type_table[i].str) + 2;
+			if (total_len + str_len > char_num_per_line) {
+				printf("\n");
+				total_len = 0;
+			}
 			printf("  %s", rss_type_table[i].str);
+			total_len += str_len;
+		}
 	}
 }
 
@@ -1628,7 +1660,7 @@ rss_config_display(struct rte_flow_action_rss *rss_conf)
 		printf("  none\n");
 		return;
 	}
-	rss_types_display(rss_conf->types);
+	rss_types_display(rss_conf->types, TESTPMD_RSS_TYPES_CHAR_NUM_PER_LINE);
 }
 
 static struct port_indirect_action *
@@ -3859,7 +3891,7 @@ port_rss_hash_conf_show(portid_t port_id, int show_rss_key)
 		return;
 	}
 	printf("RSS functions:\n");
-	rss_types_display(rss_hf);
+	rss_types_display(rss_hf, TESTPMD_RSS_TYPES_CHAR_NUM_PER_LINE);
 	printf("\n");
 	if (!show_rss_key)
 		return;
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index 2e2987eb66..9cc5752f62 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -113,6 +113,8 @@ struct pkt_burst_stats {
 	unsigned int pkt_burst_spread[MAX_PKT_BURST + 1];
 };
 
+
+#define TESTPMD_RSS_TYPES_CHAR_NUM_PER_LINE 64
 /** Information for a given RSS type. */
 struct rss_type_info {
 	const char *str; /**< Type name. */
-- 
2.33.0