/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2009, 2010 Daniel Borkmann.
 * Subject to the GPL, version 2.
 */

#include <stdio.h>
#include <stdint.h>
#include <netinet/in.h>    /* for ntohs() */

#include "proto.h"
#include "protos.h"
#include "dissector_eth.h"
#include "pkt_buff.h"

struct udphdr {
	uint16_t source;
	uint16_t dest;
	uint16_t len;
	uint16_t check;
} __packed;

static void udp(struct pkt_buff *pkt)
{
	struct udphdr *udp = (struct udphdr *) pkt_pull(pkt, sizeof(*udp));
	ssize_t len;
	uint16_t src, dest;
	char *src_name, *dest_name;

	if (udp == NULL)
		return;

	len = ntohs(udp->len) - sizeof(*udp);
	src = ntohs(udp->source);
	dest = ntohs(udp->dest);

	src_name = lookup_port_udp(src);
	dest_name = lookup_port_udp(dest);

	tprintf(" [ UDP ");
	tprintf("Port (%u", src);
	if (src_name)
		tprintf(" (%s%s%s)", colorize_start(bold), src_name,
			colorize_end());
	tprintf(" => %u", dest);
	if (dest_name)
		tprintf(" (%s%s%s)", colorize_start(bold), dest_name,
			colorize_end());
	tprintf("), ");
	if(len > pkt_len(pkt) || len < 0){
		tprintf("Len (%u) %s, ", ntohs(udp->len),
			colorize_start_full(black, red)
			"invalid" colorize_end());
	}
	tprintf("Len (%u Bytes, %zd Bytes Data), ", ntohs(udp->len), len);
	tprintf("CSum (0x%.4x)", ntohs(udp->check));
	tprintf(" ]\n");
}

static void udp_less(struct pkt_buff *pkt)
{
	struct udphdr *udp = (struct udphdr *) pkt_pull(pkt, sizeof(*udp));
	uint16_t src, dest;
	char *src_name, *dest_name;

	if (udp == NULL)
		return;

	src = ntohs(udp->source);
	dest = ntohs(udp->dest);

	src_name = lookup_port_udp(src);
	dest_name = lookup_port_udp(dest);

	tprintf(" UDP %u", src);
	if(src_name)
		tprintf("(%s%s%s)", colorize_start(bold), src_name,
			colorize_end());
	tprintf("/%u", dest);
	if (dest_name)
		tprintf("(%s%s%s)", colorize_start(bold), dest_name,
			colorize_end());
}

struct protocol udp_ops = {
	.key = 0x11,
	.print_full = udp,
	.print_less = udp_less,
};
timator.c?id=45203a3b380cee28f570475c0d28c169f908c209'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/core/gen_estimator.c?id=45203a3b380cee28f570475c0d28c169f908c209'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/core/gen_estimator.c'>
<input type='hidden' name='id' value='45203a3b380cee28f570475c0d28c169f908c209'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=45203a3b380cee28f570475c0d28c169f908c209'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=45203a3b380cee28f570475c0d28c169f908c209'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/core?id=45203a3b380cee28f570475c0d28c169f908c209'>core</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/core/gen_estimator.c?id=45203a3b380cee28f570475c0d28c169f908c209'>gen_estimator.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='45203a3b380cee28f570475c0d28c169f908c209'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Eric Dumazet &lt;edumazet@google.com&gt;</td><td class='right'>2013-06-06 08:43:22 -0700</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2013-06-11 02:51:03 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/core/gen_estimator.c?id=45203a3b380cee28f570475c0d28c169f908c209'>45203a3b380cee28f570475c0d28c169f908c209</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/core/gen_estimator.c?id=45203a3b380cee28f570475c0d28c169f908c209'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=45203a3b380cee28f570475c0d28c169f908c209'>9d9b00da9accbc0ea01c91c206cb86a2f9dd7609</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/core/gen_estimator.c?id=45203a3b380cee28f570475c0d28c169f908c209'>net/core/gen_estimator.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/core/gen_estimator.c?id=b41abb42bf62a85a32c41dab873220598a6ee266'>b41abb42bf62a85a32c41dab873220598a6ee266</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/core/gen_estimator.c?id=45203a3b380cee28f570475c0d28c169f908c209&amp;id2=b41abb42bf62a85a32c41dab873220598a6ee266'>diff</a>)</td></tr></table>
<div class='commit-subject'>net_sched: add 64bit rate estimators</div><div class='commit-msg'>struct gnet_stats_rate_est contains u32 fields, so the bytes per second
field can wrap at 34360Mbit.

Add a new gnet_stats_rate_est64 structure to get 64bit bps/pps fields,
and switch the kernel to use this structure natively.

This structure is dumped to user space as a new attribute :

TCA_STATS_RATE_EST64

Old tc command will now display the capped bps (to 34360Mbit), instead
of wrapped values, and updated tc command will display correct
information.

Old tc command output, after patch :

eric:~# tc -s -d qd sh dev lo
qdisc pfifo 8001: root refcnt 2 limit 1000p
 Sent 80868245400 bytes 1978837 pkt (dropped 0, overlimits 0 requeues 0)
 rate 34360Mbit 189696pps backlog 0b 0p requeues 0

This patch carefully reorganizes "struct Qdisc" layout to get optimal
performance on SMP.

Signed-off-by: Eric Dumazet &lt;edumazet@google.com&gt;
Cc: Ben Hutchings &lt;bhutchings@solarflare.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=45203a3b380cee28f570475c0d28c169f908c209'>Diffstat</a> (limited to 'net/core/gen_estimator.c')</div><table summary='diffstat' class='diffstat'>