_ Git - flowspec-xdp/blob - dropcount.sh

   1 #!/bin/bash
   2 function PRINTCNT() {
   3 if [ "$KEY" != "" ]; then
   4         if [ "$KEY" = "0" ]; then
   5                 echo -e "$CNT:\tInvalid packet length"
   6         elif [ "$KEY" = "1" ]; then
   7                 echo -e "$CNT:\tInvalid VLAN tag"
   8         elif [ "$KEY" = "2" ]; then
   9                 echo -e "$CNT:\tInvalid/rejected IHL IPv4 field"
  10         elif [ "$KEY" = "3" ]; then
  11                 echo -e "$CNT:\tRejected IPv6 fragments"
  12         else
  13                 echo -en "$CNT:\t"
  14                 cat "$(dirname ${BASH_SOURCE[0]})/installed-rules.txt" | head -n $(( $KEY - 3 )) | tail -n1
  15         fi
  16 fi
  17 CNT=0
  18 }
  19 bpftool map show | grep drop_cnt_map | awk '{ print $1 }' | tr -d ':' | while read IF; do
  20         bpftool map dump id "$IF" | {
  21                 KEY=""
  22                 CNT=0
  23                 while read LINE; do
  24                         case "$LINE" in
  25                                 "key:") ;;
  26                                 "value"*)
  27                                         CNT=$(( $CNT + $(echo "$LINE" | awk '{ print "0x" $11 $10 $9 $8 $7 $6 $5 $4 }') ))
  28                                         ;;
  29                                 "Found "*) ;;
  30                                 *)
  31                                         PRINTCNT
  32                                         KEY=$((16#$(echo "$LINE" | awk '{ print $4 $3 $2 $1 }')))
  33                                         ;;
  34                         esac
  35                 done
  36                 PRINTCNT
  37         }
  38 done