netsniff-ng: calculate packets drops as percentage

bin/sostat

@@ -200,16 +200,55 @@ if [ -d /nsm/sensor_data ]; then
 	fi
 	echo
 	echo "-------------------------------------------------------------------------"
-	if ls /var/log/nsm/*/netsniff-ng.log > /dev/null 2>&1; then
-		echo
-		echo "${underline}Netsniff-NG${normal}:"
-		#awk 'BEGIN { RS="."; FS="/"; ORS="\n" } { if( $0 !~ /netsniff/ && substr( $2,2,length($2)-2 ) > 0 ) print "File:",FILENAME,"Processed:",$1,"Lost:",$2 }' /var/log/nsm/*/netsniff-ng.log | sed -e 's/(//' -e 's/)//' | column -t | grep -v "Lost:  -0"
-		for i in /var/log/nsm/*/netsniff.log; do egrep -v "^Executing|^RX|^Running|^Cannot set NIC flags" $i | sed 's|\.|\n|g' | sed 's|(||g' | sed 's|)||g' | sed 's|/| |g' | while read PROCESSED LOST; do echo "File: $i Processed: $PROCESSED Lost: $LOST"; done; done | column -t | grep -v "Processed:  Lost:" | grep -v "Lost:  -0"
-		if [ $? -gt 0 ]; then
-			echo
-			echo "0 Loss"
-		fi
-	fi
+        if ls /var/log/nsm/*/netsniff-ng.log > /dev/null 2>&1; then
+            echo
+            echo "${underline}Netsniff-NG${normal}:"
+            for i in /var/log/nsm/*/netsniff-ng.log;
+            do
+                if grep -q -e "-[1-9]*)" "$i"; then
+                    echo
+                    RCVD=()
+                    DRPD=()
+                    IFS=".(+"
+                    while read -ra line;
+                    do
+                        for word in "${line[@]}";
+                        do
+                            if [[ $word =~ ')' ]]; then
+                                RCVD+=(`echo "$word" | cut -d '/' -f1`);
+                            fi
+                        done;
+                    done < "$i"
+
+                    IFS='+' rcvd_sum=$(echo "scale=1;${RCVD[*]}"|bc)
+                    TOT_RCVD=`echo $rcvd_sum`
+
+                    IFS="-"
+                    while read -ra line;
+                    do
+                        for word in "${line[@]}";
+                        do
+                            if [[ $word =~ ')' ]]; then
+                                DRPD+=(`echo "$word" | cut -d ')' -f1`);
+                            fi
+                        done;
+                    done < "$i"
+
+                    IFS='+' drpd_sum=$(echo "scale=1;${DRPD[*]}"|bc)
+                    TOT_DRPD=`echo $drpd_sum`
+		    TOT_PKTS=`echo 'scale=2; '$TOT_DRPD'+'$TOT_RCVD''|bc`
+                    DRPD_PCT=`echo 'scale=2; '$TOT_DRPD'*100/'$TOT_PKTS''|bc`
+                    echo
+                    echo Percentage of packets dropped:
+                    echo
+		    echo $i " -- " $DRPD_PCT
+		    echo
+                else
+                    echo
+                    echo "0 Loss"
+                fi
+            done
+        fi
 	echo
 	header "PF_RING"
         cat /proc/net/pf_ring/info