/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2012 Markus Amend <markus@netsniff-ng.org>, Deutsche Flugsicherung GmbH
 * Subject to the GPL, version 2.
 *
 * IPv6 Destination Options Header described in RFC2460
 */

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

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

struct dest_optshdr {
	uint8_t h_next_header;
	uint8_t hdr_len;
} __packed;


static void dissect_opt_dest(struct pkt_buff *pkt __maybe_unused,
			     ssize_t *opt_len)
{
	/* Have to been upgraded.
	 * http://tools.ietf.org/html/rfc2460#section-4.2
	 * Look also for proto_ipv6_hop_by_hop.h, it needs
	 * dissect_opt(), too.
	 */
	if (*opt_len)
		tprintf(", Option(s) recognized ");

	/* If adding dissector reduce opt_len for each using of pkt_pull
	 * to the same size.
	 */
}

static void dest_opts(struct pkt_buff *pkt)
{
	uint16_t hdr_ext_len;
	ssize_t opt_len;
	struct dest_optshdr *dest_ops;

	dest_ops = (struct dest_optshdr *) pkt_pull(pkt, sizeof(*dest_ops));
	if (dest_ops == NULL)
		return;

	/* Total Header Length in Bytes */
	hdr_ext_len = (dest_ops->hdr_len + 1) * 8;
	/* Options length in Bytes */
	opt_len = hdr_ext_len - sizeof(*dest_ops);

	tprintf("\t [ Destination Options ");
	tprintf("NextHdr (%u), ", dest_ops->h_next_header);
	if (opt_len > pkt_len(pkt) || opt_len < 0) {
	      tprintf("HdrExtLen (%u, %u Bytes, %s)", dest_ops->hdr_len,
		    hdr_ext_len, colorize_start_full(black, red)
		    "invalid" colorize_end());
		    return;
	}
	tprintf("HdrExtLen (%u, %u Bytes)", dest_ops->hdr_len,
		hdr_ext_len);

	dissect_opt_dest(pkt, &opt_len);

	tprintf(" ]\n");

	pkt_pull(pkt, opt_len);
	pkt_set_dissector(pkt, &eth_lay3, dest_ops->h_next_header);
}

static void dest_opts_less(struct pkt_buff *pkt)
{
	uint16_t hdr_ext_len;
	ssize_t opt_len;
	struct dest_optshdr *dest_ops;

	dest_ops = (struct dest_optshdr *) pkt_pull(pkt, sizeof(*dest_ops));
	if (dest_ops == NULL)
		return;

	/* Total Header Length in Bytes */
	hdr_ext_len = (dest_ops->hdr_len + 1) * 8;
	/* Options length in Bytes */
	opt_len = hdr_ext_len - sizeof(*dest_ops);
	if (opt_len > pkt_len(pkt) || opt_len < 0)
		return;

	tprintf(" Dest Ops");

	pkt_pull(pkt, opt_len);
	pkt_set_dissector(pkt, &eth_lay3, dest_ops->h_next_header);
}

struct protocol ipv6_dest_opts_ops = {
	.key = 0x3C,
	.print_full = dest_opts,
	.print_less = dest_opts_less,
};
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=a572a1b999489efb591287632279c6c9eca3e4ed'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&amp;id=a572a1b999489efb591287632279c6c9eca3e4ed'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/hsr?h=nds-private-remove&amp;id=a572a1b999489efb591287632279c6c9eca3e4ed'>hsr</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/hsr/hsr_netlink.c?h=nds-private-remove&amp;id=a572a1b999489efb591287632279c6c9eca3e4ed'>hsr_netlink.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/hsr/hsr_netlink.c?h=nds-private-remove&amp;id=a572a1b999489efb591287632279c6c9eca3e4ed&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
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<tr><th>author</th><td>Dave Airlie &lt;airlied@redhat.com&gt;</td><td class='right'>2017-01-26 06:44:03 +1000</td></tr>
<tr><th>committer</th><td>Dave Airlie &lt;airlied@redhat.com&gt;</td><td class='right'>2017-01-26 06:44:03 +1000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/request_sock.h?h=nds-private-remove&amp;id=54a07c7bb0da0343734c78212bbe9f3735394962'>54a07c7bb0da0343734c78212bbe9f3735394962</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/net/request_sock.h?id=54a07c7bb0da0343734c78212bbe9f3735394962'>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=54a07c7bb0da0343734c78212bbe9f3735394962'>714efff4608ddc0dda7dc85ca82ae98e2c58b52c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/net/request_sock.h?h=nds-private-remove&amp;id=54a07c7bb0da0343734c78212bbe9f3735394962'>include/net/request_sock.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/request_sock.h?h=nds-private-remove&amp;id=932790109f62aa52bdb4bb62aa66653c0b51bc75'>932790109f62aa52bdb4bb62aa66653c0b51bc75</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/request_sock.h?h=nds-private-remove&amp;id=54a07c7bb0da0343734c78212bbe9f3735394962&amp;id2=932790109f62aa52bdb4bb62aa66653c0b51bc75'>diff</a>)</td></tr></table>
<div class='commit-subject'>Revert "drm/probe-helpers: Drop locking from poll_enable"</div><div class='commit-msg'>This reverts commit 3846fd9b86001bea171943cc3bb9222cb6da6b42.

There were some precursor commits missing for this around connector
locking, we should probably merge Lyude's nouveau avoid the problem patch.
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=54a07c7bb0da0343734c78212bbe9f3735394962'>Diffstat</a> (limited to 'include/net/request_sock.h')</div><table summary='diffstat' class='diffstat'>