/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2009 - 2013 Daniel Borkmann.
 * Subject to the GPL, version 2.
 */

#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>

#include "pcap_io.h"
#include "built_in.h"
#include "die.h"
#include "iosched.h"
#include "ioops.h"

static ssize_t pcap_rw_write(int fd, pcap_pkthdr_t *phdr, enum pcap_type type,
			     const uint8_t *packet, size_t len)
{
	ssize_t ret, hdrsize = pcap_get_hdr_length(phdr, type), hdrlen = 0;

	ret = write_or_die(fd, &phdr->raw, hdrsize);
	if (unlikely(ret != hdrsize))
		panic("Failed to write pkt header!\n");

	hdrlen = pcap_get_length(phdr, type);
	if (unlikely(hdrlen != (ssize_t) len))
		return -EINVAL;

	ret = write_or_die(fd, packet, hdrlen);
	if (unlikely(ret != hdrlen))
		panic("Failed to write pkt payload!\n");

	return hdrsize + hdrlen;
}

static ssize_t pcap_rw_read(int fd, pcap_pkthdr_t *phdr, enum pcap_type type,
			    uint8_t *packet, size_t len)
{
	ssize_t ret, hdrsize = pcap_get_hdr_length(phdr, type), hdrlen = 0;

	ret = read_or_die(fd, &phdr->raw, hdrsize);
	if (unlikely(ret != hdrsize))
		return -EIO;

	hdrlen = pcap_get_length(phdr, type);
	if (unlikely(hdrlen == 0 || hdrlen > (ssize_t) len))
                return -EINVAL;

	ret = read(fd, packet, hdrlen);
	if (unlikely(ret != hdrlen))
		return -EIO;

	return hdrsize + hdrlen;
}

static void pcap_rw_init_once(bool enforce_prio)
{
	if (enforce_prio)
		set_ioprio_rt();
}

static void pcap_rw_fsync(int fd)
{
	fdatasync(fd);
}

const struct pcap_file_ops pcap_rw_ops = {
	.init_once_pcap = pcap_rw_init_once,
	.pull_fhdr_pcap = pcap_generic_pull_fhdr,
	.push_fhdr_pcap = pcap_generic_push_fhdr,
	.read_pcap = pcap_rw_read,
	.write_pcap = pcap_rw_write,
	.fsync_pcap = pcap_rw_fsync,
};
arch?h=nds-private-remove'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/arch?h=nds-private-remove&amp;id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/arch?h=nds-private-remove&amp;id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/arch?h=nds-private-remove&amp;id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/arch'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/arch?h=nds-private-remove&amp;id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'>arch</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'/><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>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-10 14:10:35 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-10 14:10:35 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/arch?h=nds-private-remove&amp;id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'>3ebc7033168d43d12e4941f48a6f257d3f1ea1b5</a> (<a href='/cgit.cgi/linux/net-next.git/patch/arch?id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'>86148ef43b4da95d656d29d4d4ba84e754aeca17</a> /<a href='/cgit.cgi/linux/net-next.git/tree/arch?h=nds-private-remove&amp;id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'>arch</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/arch?h=nds-private-remove&amp;id=3d88460dbd285e7f32437b530d5bb7cb916142fa'>3d88460dbd285e7f32437b530d5bb7cb916142fa</a> (<a href='/cgit.cgi/linux/net-next.git/diff/arch?h=nds-private-remove&amp;id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5&amp;id2=3d88460dbd285e7f32437b530d5bb7cb916142fa'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/arch?h=nds-private-remove&amp;id=f83e6862047e1e371bdc5d512dd6cabe8a3965b8'>f83e6862047e1e371bdc5d512dd6cabe8a3965b8</a> (<a href='/cgit.cgi/linux/net-next.git/diff/arch?h=nds-private-remove&amp;id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5&amp;id2=f83e6862047e1e371bdc5d512dd6cabe8a3965b8'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'powerpc-4.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux</div><div class='commit-msg'>Pull powerpc fixes friom Michael Ellerman:
 "Apologies for the late pull request, but Ben has been busy finding bugs.

   - Userspace was semi-randomly segfaulting on radix due to us
     incorrectly handling a fault triggered by autonuma, caused by a
     patch we merged earlier in v4.10 to prevent the kernel executing
     userspace.

   - We weren't marking host IPIs properly for KVM in the OPAL ICP
     backend.

   - The ERAT flushing on radix was missing an isync and was incorrectly
     marked as DD1 only.

   - The powernv CPU hotplug code was missing a wakeup type and failing
     to flush the interrupt correctly when using OPAL ICP

  Thanks to Benjamin Herrenschmidt"

* tag 'powerpc-4.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/powernv: Properly set "host-ipi" on IPIs
  powerpc/powernv: Fix CPU hotplug to handle waking on HVI
  powerpc/mm/radix: Update ERAT flushes when invalidating TLB
  powerpc/mm: Fix spurrious segfaults on radix with autonuma
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'>Diffstat</a> (limited to 'arch')</div><table summary='diffstat' class='diffstat'>