majek

all:
	clang -g -O2 -Wall -Wextra net.c send.c -o send
	clang -g -O2 -Wall -Wextra net.c receive.c -o receive
	clang -g -O2 -Wall -Wextra net.c proxy-naive.c -o proxy-naive
	clang -g -O2 -Wall -Wextra net.c proxy-splice.c -o proxy-splice

majek

package main

import (
	"flag"
	"fmt"
	"net"
	"os"
	"strings"
	"sync/atomic"
	"time"

majek

How to run:

go build udp.go; sudo bash -c "ulimit -n 100000; ./udpserver"
go build udpclient.go && ./udpclient
sudo netstat -l4np --udp|grep :1234|tr -s " "|egrep -v "p 0"

Sample output

127.0.87.133:1234 0.347 ms

majek

package main

import (
	"fmt"
	"os"
	"strings"
	"math/rand"


	"github.com/gdamore/mangos"

majek

#!/bin/bash

cat << EOF > /tmp/xxx
4.1.1	2015-06-17		100100 weekly downloads	 
4.0.3	2015-04-15		9494 weekly downloads	 
3.23.2.1	2015-02-23		1919 weekly downloads	 
3.23.2	2014-12-22		1515 weekly downloads	 
3.22.3	2014-08-15		99 weekly downloads	 
3.21.2	2014-03-28		88 weekly downloads	 
3.19.1	2013-12-20		1515 weekly downloads	 

majek

diff -Nraup ixgbe-linux-netmap/ixgbe-3.23.2.1/src/ixgbe_main.c ixgbe-linux-netmap-single-queue/ixgbe-3.23.2.1/src/ixgbe_main.c
--- ixgbe-linux-netmap/ixgbe-3.23.2.1/src/ixgbe_main.c	2015-06-20 14:23:38.457783634 +0100
+++ ixgbe-linux-netmap-single-queue/ixgbe-3.23.2.1/src/ixgbe_main.c	2015-06-20 14:23:31.330496612 +0100
@@ -686,6 +686,7 @@ static bool ixgbe_clean_tx_irq(struct ix
 	if (test_bit(__IXGBE_DOWN, &adapter->state))
 		return true;
 
+        if (tx_ring->queue_index == 0) {
 #ifdef DEV_NETMAP
         /*    

majek

/*
 *  gcc flood_mmap.c -l pcap -O3 -o flood_mmap
 */
#include <arpa/inet.h>
#include <ctype.h>
#include <getopt.h>
#include <linux/if_packet.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <pcap/pcap.h>

majek

#!/bin/bash

(mkdir git && cd git && git init)

for NAME in `ls open*tgz|cut -d "." -f 1|sort`; do
    FILE=$NAME.tgz
    MD5=`md5sum $FILE`
    tar xzf $FILE
    (cd git && git rm -r *)
    mv $NAME/* git

majek

#!/usr/bin/env python
import collections
import itertools
import sys

import string
import array

def load_memory(filename):
    regs = {}

majek

data = [
    [
        "16030100e2010000de030151d1743150b15934aa386f69a593d0f59ddfae80394da9ad164c06814b9cb81d000048c00ac0140088008700390038c00fc00500840035c007c009c011c0130045004400330032c00cc00ec002c0040096004100040005002fc008c01200160013c00dc003feff000a00ff0100006d00000024002200001f7777772e79786567336e6274733668736a743573696b64676d73642e636f6d000b000403000102000a00340032000e000d0019000b000c00180009000a00160017000800060007001400150004000500120013000100020003000f00100011000f000101",
        "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