[PATCH ethtool-next 05/14] qsfp: Refactor sff8636_show_dom() by moving code into separate functions

[Danielle Ratson <danieller@nvidia.com>]

The sff8636_show_dom() function is quite lengthy, and with the planned
addition of JSON support, it will become even longer and more complex.

To improve readability and maintainability, refactor the function by
moving portions of the code into separate functions, following the
approach used in the cmis.c module.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
---
 qsfp.c | 144 +++++++++++++++++++++++++++++++++++----------------------
 1 file changed, 89 insertions(+), 55 deletions(-)

diff --git a/qsfp.c b/qsfp.c
index 674242c..13d8fb7 100644
--- a/qsfp.c
+++ b/qsfp.c
@@ -649,13 +649,94 @@ out:
 	}
 }
 
-static void sff8636_show_dom(const struct sff8636_memory_map *map)
+static void sff8636_show_dom_chan_lvl_tx_bias(const struct sff_diags *sd)
+{
+	char power_string[MAX_DESC_SIZE];
+	int i;
+
+	for (i = 0; i < SFF8636_MAX_CHANNEL_NUM; i++) {
+		snprintf(power_string, MAX_DESC_SIZE, "%s (Channel %d)",
+			 "Laser tx bias current", i+1);
+		PRINT_BIAS(power_string, sd->scd[i].bias_cur);
+	}
+}
+
+static void sff8636_show_dom_chan_lvl_tx_power(const struct sff_diags *sd)
+{
+	char power_string[MAX_DESC_SIZE];
+	int i;
+
+	for (i = 0; i < SFF8636_MAX_CHANNEL_NUM; i++) {
+		snprintf(power_string, MAX_DESC_SIZE, "%s (Channel %d)",
+			 "Transmit avg optical power", i+1);
+		PRINT_xX_PWR(power_string, sd->scd[i].tx_power);
+	}
+}
+
+static void sff8636_show_dom_chan_lvl_rx_power(const struct sff_diags *sd)
 {
-	struct sff_diags sd = {0};
-	char *rx_power_string = NULL;
 	char power_string[MAX_DESC_SIZE];
+	char *rx_power_string = NULL;
+	int i;
+
+	if (!sd->rx_power_type)
+		rx_power_string = "Receiver signal OMA";
+	else
+		rx_power_string = "Rcvr signal avg optical power";
+
+	for (i = 0; i < SFF8636_MAX_CHANNEL_NUM; i++) {
+		snprintf(power_string, MAX_DESC_SIZE, "%s (Channel %d)",
+			 rx_power_string, i+1);
+		PRINT_xX_PWR(power_string, sd->scd[i].rx_power);
+	}
+}
+
+static void
+sff8636_show_dom_chan_lvl_flags(const struct sff8636_memory_map *map)
+{
+	bool value;
 	int i;
 
+	for (i = 0; module_aw_chan_flags[i].fmt_str; ++i) {
+		int j = 1;
+
+		if (module_aw_chan_flags[i].type != MODULE_TYPE_SFF8636)
+			continue;
+
+		do {
+			value = map->lower_memory[module_aw_chan_flags[i].offset] &
+				module_aw_chan_flags[i].adver_value;
+			printf("\t%-41s (Chan %d) : %s\n",
+			       module_aw_chan_flags[i].fmt_str, j,
+			       ONOFF(value));
+			j++;
+			i++;
+		}
+		while (module_aw_chan_flags[i].fmt_str &&
+		       strcmp(module_aw_chan_flags[i].fmt_str,
+			      module_aw_chan_flags[i-1].fmt_str) == 0);
+		i--;
+	}
+}
+
+static void
+sff8636_show_dom_mod_lvl_flags(const struct sff8636_memory_map *map)
+{
+	int i;
+
+	for (i = 0; module_aw_mod_flags[i].str; ++i) {
+		if (module_aw_mod_flags[i].type == MODULE_TYPE_SFF8636)
+			printf("\t%-41s : %s\n",
+			       module_aw_mod_flags[i].str,
+			       ONOFF(map->lower_memory[module_aw_mod_flags[i].offset]
+				     & module_aw_mod_flags[i].value));
+	}
+}
+
+static void sff8636_show_dom(const struct sff8636_memory_map *map)
+{
+	struct sff_diags sd = {0};
+
 	/*
 	 * There is no clear identifier to signify the existence of
 	 * optical diagnostics similar to SFF-8472. So checking existence
@@ -687,60 +768,13 @@ static void sff8636_show_dom(const struct sff8636_memory_map *map)
 	printf("\t%-41s : %s\n", "Alarm/warning flags implemented",
 		(sd.supports_alarms ? "Yes" : "No"));
 
-	for (i = 0; i < SFF8636_MAX_CHANNEL_NUM; i++) {
-		snprintf(power_string, MAX_DESC_SIZE, "%s (Channel %d)",
-					"Laser tx bias current", i+1);
-		PRINT_BIAS(power_string, sd.scd[i].bias_cur);
-	}
-
-	for (i = 0; i < SFF8636_MAX_CHANNEL_NUM; i++) {
-		snprintf(power_string, MAX_DESC_SIZE, "%s (Channel %d)",
-					"Transmit avg optical power", i+1);
-		PRINT_xX_PWR(power_string, sd.scd[i].tx_power);
-	}
-
-	if (!sd.rx_power_type)
-		rx_power_string = "Receiver signal OMA";
-	else
-		rx_power_string = "Rcvr signal avg optical power";
-
-	for (i = 0; i < SFF8636_MAX_CHANNEL_NUM; i++) {
-		snprintf(power_string, MAX_DESC_SIZE, "%s(Channel %d)",
-					rx_power_string, i+1);
-		PRINT_xX_PWR(power_string, sd.scd[i].rx_power);
-	}
+	sff8636_show_dom_chan_lvl_tx_bias(&sd);
+	sff8636_show_dom_chan_lvl_tx_power(&sd);
+	sff8636_show_dom_chan_lvl_rx_power(&sd);
 
 	if (sd.supports_alarms) {
-		bool value;
-
-		for (i = 0; module_aw_chan_flags[i].fmt_str; ++i) {
-			int j = 1;
-
-			if (module_aw_chan_flags[i].type != MODULE_TYPE_SFF8636)
-				continue;
-
-			do {
-				value = map->lower_memory[module_aw_chan_flags[i].offset] &
-					module_aw_chan_flags[i].adver_value;
-				printf("\t%-41s (Chan %d) : %s\n",
-				       module_aw_chan_flags[i].fmt_str, j,
-				       value ? "On" : "Off");
-				j++;
-				i++;
-			}
-			while (module_aw_chan_flags[i].fmt_str &&
-			       strcmp(module_aw_chan_flags[i].fmt_str,
-				      module_aw_chan_flags[i-1].fmt_str) == 0);
-			i--;
-		}
-		for (i = 0; module_aw_mod_flags[i].str; ++i) {
-			if (module_aw_mod_flags[i].type == MODULE_TYPE_SFF8636)
-				printf("\t%-41s : %s\n",
-				       module_aw_mod_flags[i].str,
-				       (map->lower_memory[module_aw_mod_flags[i].offset]
-				       & module_aw_mod_flags[i].value) ?
-				       "On" : "Off");
-		}
+		sff8636_show_dom_chan_lvl_flags(map);
+		sff8636_show_dom_mod_lvl_flags(map);
 
 		sff_show_thresholds(sd);
 	}
-- 
2.47.0