/*
 *	This module:
 *		This module is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 *
 *	History
 *	03-01-2007	Added forwarding for x.25	Andrew Hendry
 */

#define pr_fmt(fmt) "X25: " fmt

#include <linux/if_arp.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <net/x25.h>

LIST_HEAD(x25_forward_list);
DEFINE_RWLOCK(x25_forward_list_lock);

int x25_forward_call(struct x25_address *dest_addr, struct x25_neigh *from,
			struct sk_buff *skb, int lci)
{
	struct x25_route *rt;
	struct x25_neigh *neigh_new = NULL;
	struct list_head *entry;
	struct x25_forward *x25_frwd, *new_frwd;
	struct sk_buff *skbn;
	short same_lci = 0;
	int rc = 0;

	if ((rt = x25_get_route(dest_addr)) == NULL)
		goto out_no_route;

	if ((neigh_new = x25_get_neigh(rt->dev)) == NULL) {
		/* This shouldn't happen, if it occurs somehow
		 * do something sensible
		 */
		goto out_put_route;
	}

	/* Avoid a loop. This is the normal exit path for a
	 * system with only one x.25 iface and default route
	 */
	if (rt->dev == from->dev) {
		goto out_put_nb;
	}

	/* Remote end sending a call request on an already
	 * established LCI? It shouldn't happen, just in case..
	 */
	read_lock_bh(&x25_forward_list_lock);
	list_for_each(entry, &x25_forward_list) {
		x25_frwd = list_entry(entry, struct x25_forward, node);
		if (x25_frwd->lci == lci) {
			pr_warn("call request for lci which is already registered!, transmitting but not registering new pair\n");
			same_lci = 1;
		}
	}
	read_unlock_bh(&x25_forward_list_lock);

	/* Save the forwarding details for future traffic */
	if (!same_lci){
		if ((new_frwd = kmalloc(sizeof(struct x25_forward),
						GFP_ATOMIC)) == NULL){
			rc = -ENOMEM;
			goto out_put_nb;
		}
		new_frwd->lci = lci;
		new_frwd->dev1 = rt->dev;
		new_frwd->dev2 = from->dev;
		write_lock_bh(&x25_forward_list_lock);
		list_add(&new_frwd->node, &x25_forward_list);
		write_unlock_bh(&x25_forward_list_lock);
	}

	/* Forward the call request */
	if ( (skbn = skb_clone(skb, GFP_ATOMIC)) == NULL){
		goto out_put_nb;
	}
	x25_transmit_link(skbn, neigh_new);
	rc = 1;


out_put_nb:
	x25_neigh_put(neigh_new);

out_put_route:
	x25_route_put(rt);

out_no_route:
	return rc;
}


int x25_forward_data(int lci, struct x25_neigh *from, struct sk_buff *skb) {

	struct x25_forward *frwd;
	struct list_head *entry;
	struct net_device *peer = NULL;
	struct x25_neigh *nb;
	struct sk_buff *skbn;
	int rc = 0;

	read_lock_bh(&x25_forward_list_lock);
	list_for_each(entry, &x25_forward_list) {
		frwd = list_entry(entry, struct x25_forward, node);
		if (frwd->lci == lci) {
			/* The call is established, either side can send */
			if (from->dev == frwd->dev1) {
				peer = frwd->dev2;
			} else {
				peer = frwd->dev1;
			}
			break;
		}
	}
	read_unlock_bh(&x25_forward_list_lock);

	if ( (nb = x25_get_neigh(peer)) == NULL)
		goto out;

	if ( (skbn = pskb_copy(skb, GFP_ATOMIC)) == NULL){
		goto output;

	}
	x25_transmit_link(skbn, nb);

	rc = 1;
output:
	x25_neigh_put(nb);
out:
	return rc;
}

void x25_clear_forward_by_lci(unsigned int lci)
{
	struct x25_forward *fwd;
	struct list_head *entry, *tmp;

	write_lock_bh(&x25_forward_list_lock);

	list_for_each_safe(entry, tmp, &x25_forward_list) {
		fwd = list_entry(entry, struct x25_forward, node);
		if (fwd->lci == lci) {
			list_del(&fwd->node);
			kfree(fwd);
		}
	}
	write_unlock_bh(&x25_forward_list_lock);
}


void x25_clear_forward_by_dev(struct net_device *dev)
{
	struct x25_forward *fwd;
	struct list_head *entry, *tmp;

	write_lock_bh(&x25_forward_list_lock);

	list_for_each_safe(entry, tmp, &x25_forward_list) {
		fwd = list_entry(entry, struct x25_forward, node);
		if ((fwd->dev1 == dev) || (fwd->dev2 == dev)){
			list_del(&fwd->node);
			kfree(fwd);
		}
	}
	write_unlock_bh(&x25_forward_list_lock);
}
n 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><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=d0e287a401d9acf67b75180b26e2d62b7d482652'>Diffstat</a> (limited to 'net/ipv4/tcp_veno.c')</div><table summary='diffstat' class='diffstat'>ion 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>Sergei Shtylyov &lt;sergei.shtylyov@cogentembedded.com&gt;</td><td class='right'>2017-01-29 15:07:34 +0300</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-30 22:05:43 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/pmu-events/arch/x86/ivybridge/pipeline.json?id=1a0bee6c1e788218fd1d141db320db970aace7f0'>1a0bee6c1e788218fd1d141db320db970aace7f0</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/perf/pmu-events/arch/x86/ivybridge/pipeline.json?id=1a0bee6c1e788218fd1d141db320db970aace7f0'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=1a0bee6c1e788218fd1d141db320db970aace7f0'>46c4116bc8ef4a7df718516a648597d9e21c15f1</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/perf/pmu-events/arch/x86/ivybridge/pipeline.json?id=1a0bee6c1e788218fd1d141db320db970aace7f0'>tools/perf/pmu-events/arch/x86/ivybridge/pipeline.json</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/pmu-events/arch/x86/ivybridge/pipeline.json?id=63c190429020a9701b42887ac22c28f287f1762f'>63c190429020a9701b42887ac22c28f287f1762f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/pmu-events/arch/x86/ivybridge/pipeline.json?id=1a0bee6c1e788218fd1d141db320db970aace7f0&amp;id2=63c190429020a9701b42887ac22c28f287f1762f'>diff</a>)</td></tr></table>
<div class='commit-subject'>sh_eth: rename EESIPR bits</div><div class='commit-msg'>Since the  commit  b0ca2a21f769 ("sh_eth: Add support of SH7763 to sh_eth")
the *enum* declaring the EESIPR bits (interrupt mask) went out of sync with
the *enum* declaring the EESR bits (interrupt status) WRT  bit naming  and
formatting. I'd like to restore the consistency by using EESIPR as the bit
name prefix, renaming the *enum* to EESIPR_BIT, and (finally) renaming the
bits according to the available  Renesas SH77{34|63} manuals; additionally,
reconstruct  couple names using  the EESR bit declaration above...

Signed-off-by: Sergei Shtylyov &lt;sergei.shtylyov@cogentembedded.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=1a0bee6c1e788218fd1d141db320db970aace7f0'>Diffstat</a> (limited to 'tools/perf/pmu-events/arch/x86/ivybridge/pipeline.json')</div><table summary='diffstat' class='diffstat'>