luci-olsr: add snr for olsr neighbours and update Legend

applications/luci-olsr/luasrc/controller/olsr.lua

@@ -227,9 +227,9 @@ function action_neigh(json)
 				for assocmac, assot in pairs(val.list) do
 					assocmac = string.lower(assocmac or "")
 					if rmac == assocmac then
-						signal = tonumber(assot.signal)
+						signal = tonumber(assot.signal)*-1
-						noise = tonumber(assot.noise)
+						noise = tonumber(assot.noise)*-1
-						snr = signal/noise
+						snr = noise - signal
 					end
 				end
 			end

applications/luci-olsr/luasrc/tools/olsr.lua

@@ -26,3 +26,17 @@ function etx_color(etx)
 	return color
 end
 
+function snr_color(snr)
+	local color = "#bb3333"
+	if snr == 0 then
+		color = "#bb3333"
+	elseif snr > 30 then
+		color = "#00cc00"
+	elseif snr > 20 then
+		color = "#ffcb05"
+	elseif snr > 5 then
+		color = "#ff6600"
+	end
+	return color
+end
+

applications/luci-olsr/luasrc/view/status-olsr/legend.htm

@@ -3,9 +3,18 @@
 	<li><strong>LQ: </strong><%:Success rate of packages received from the neighbour%></li>
 	<li><strong>NLQ: </strong><%:Success rate of packages sent to the neighbour%></li>
 	<li><strong>ETX: </strong><%:Expected retransmission count%></li>
-	<li><strong><span style="color:#00cc00"><%:Green%></span></strong>:<%:Very good (ETX < 2)%></li>
+	<ul>
-	<li><strong><span style="color:#ffcb05"><%:Yellow%></span></strong>:<%:Good (2 < ETX < 4)%></li>
+		<li><strong><span style="color:#00cc00"><%:Green%></span></strong>:<%:Very good (ETX < 2)%></li>
-	<li><strong><span style="color:#ff6600"><%:Orange%></span></strong>:<%:Still usable (4 < ETX < 10)%></li>
+		<li><strong><span style="color:#ffcb05"><%:Yellow%></span></strong>:<%:Good (2 < ETX < 4)%></li>
-	<li><strong><span style="color:#bb3333"><%:Red%></span></strong>:<%:Bad (ETX > 10)%></li>
+		<li><strong><span style="color:#ff6600"><%:Orange%></span></strong>:<%:Still usable (4 < ETX < 10)%></li>
+		<li><strong><span style="color:#bb3333"><%:Red%></span></strong>:<%:Bad (ETX > 10)%></li>
+	</ul>
+	<li><strong>SNR: </strong><%:Signal Noise Ratio%></li>
+	<ul>
+		<li><strong><span style="color:#00cc00"><%:Green%></span></strong>:<%:Very good (SNR > 30)%></li>
+		<li><strong><span style="color:#ffcb05"><%:Yellow%></span></strong>:<%:Good (30 > SNR > 20)%></li>
+		<li><strong><span style="color:#ff6600"><%:Orange%></span></strong>:<%:Still usable (20 > SNR > 5)%></li>
+		<li><strong><span style="color:#bb3333"><%:Red%></span></strong>:<%:Bad (SNR < 5)%></li>
+	</ul>
 </ul>
 

applications/luci-olsr/luasrc/view/status-olsr/neighbors.htm

@@ -24,6 +24,7 @@ if luci.http.formvalue("status") == "1" then
 			link.linkCost = 0
 		end
 		local color = olsrtools.etx_color(link.linkCost)
+		local snr_color = olsrtools.snr_color(link.snr)
 		defaultgw_color = ""
 		if link.defaultgw == 1 then
 			defaultgw_color = "#ffff99"
@@ -43,6 +44,7 @@ if luci.http.formvalue("status") == "1" then
 			signal = string.format("%.3f", link.signal),
 			noise = string.format("%.3f", link.noise),
 			color = color,
+			snr_color = snr_color,
 			dfgcolor = defaultgw_color,
 			proto = link.proto
 			}
@@ -100,7 +102,7 @@ end
 						'<td class="cbi-section-table-titles" style="background-color:%s">%s</td>' +
 						'<td class="cbi-section-table-titles" style="background-color:%s" title="Signal: %s Noise: %s">%s</td>' +
 						'</tr>',
-						neigh.dfgcolor, neigh.ifn, neigh.lip, neigh.lmac, neigh.dfgcolor, neigh.lq, neigh.dfgcolor, neigh.nlq, neigh.color, neigh.cost, neigh.color, neigh.signal, neigh.noise, neigh.snr || '?'
+						neigh.dfgcolor, neigh.ifn, neigh.lip, neigh.lmac, neigh.dfgcolor, neigh.lq, neigh.dfgcolor, neigh.nlq, neigh.color, neigh.cost, neigh.snr_color, neigh.signal, neigh.noise, neigh.snr || '?'
 					);
 				}
 
@@ -140,6 +142,7 @@ end
 			end
 
 			color = olsrtools.etx_color(link.linkCost)
+			snr_color = olsrtools.snr_color(link.snr)
 
 			defaultgw_color = ""
 			if link.defaultgw == 1 then
@@ -158,7 +161,7 @@ end
 			<td class="cbi-section-table-titles" style="background-color:<%=defaultgw_color%>"><%=string.format("%.3f", link.linkQuality)%></td>
 			<td class="cbi-section-table-titles" style="background-color:<%=defaultgw_color%>"><%=string.format("%.3f", link.neighborLinkQuality)%></td>
 			<td class="cbi-section-table-titles" style="background-color:<%=color%>"><%=string.format("%.3f", link.linkCost)%></td>
-			<td class="cbi-section-table-titles" style="background-color:<%=color%>" title="Signal: <%=string.format("%.3f", link.signal)%> Noise: <%=string.format("%.3f", link.noise)%>"><%=string.format("%.3f", link.snr)%></td>
+			<td class="cbi-section-table-titles" style="background-color:<%=snr_color%>" title="Signal: <%=string.format("%.3f", link.signal)%> Noise: <%=string.format("%.3f", link.noise)%>"><%=string.format("%.3f", link.snr)%></td>
 		</tr>
 		<% 
 			i = ((i % 2) + 1)