/*
 *  Common NFSv4 ACL handling definitions.
 *
 *  Copyright (c) 2002 The Regents of the University of Michigan.
 *  All rights reserved.
 *
 *  Marius Aamodt Eriksen <marius@umich.edu>
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the University nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef LINUX_NFS4_ACL_H
#define LINUX_NFS4_ACL_H

struct nfs4_acl;
struct svc_fh;
struct svc_rqst;

/*
 * Maximum ACL we'll accept from a client; chosen (somewhat
 * arbitrarily) so that kmalloc'ing the ACL shouldn't require a
 * high-order allocation.  This allows 204 ACEs on x86_64:
 */
#define NFS4_ACL_MAX ((PAGE_SIZE - sizeof(struct nfs4_acl)) \
			/ sizeof(struct nfs4_ace))

int nfs4_acl_bytes(int entries);
int nfs4_acl_get_whotype(char *, u32);
__be32 nfs4_acl_write_who(struct xdr_stream *xdr, int who);

int nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry,
		struct nfs4_acl **acl);
__be32 nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
		struct nfs4_acl *acl);

#endif /* LINUX_NFS4_ACL_H */
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=1697599ee301a52cded6499a09bd609f7f63fd06&amp;showmsg=1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&amp;id=1697599ee301a52cded6499a09bd609f7f63fd06&amp;showmsg=1'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/l2tp?h=nds-private-remove&amp;id=1697599ee301a52cded6499a09bd609f7f63fd06&amp;showmsg=1'>l2tp</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/l2tp?h=nds-private-remove&amp;id=1697599ee301a52cded6499a09bd609f7f63fd06'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr class='logheader'><td><span title='2017-02-07 13:07:47 -0500'>2017-02-07</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net/l2tp?h=nds-private-remove&amp;id=0dec879f636f11b0ffda1cb5fd96a1754c59ead3'>net: use dst_confirm_neigh for UDP, RAW, ICMP, L2TP</a></td><td>Julian Anastasov</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+2</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
When same struct dst_entry can be used for many different
neighbours we can not use it for pending confirmations.

The datagram protocols can use MSG_CONFIRM to confirm the
neighbour. When used with MSG_PROBE we do not reach the
code where neighbour is confirmed, so we have to do the
same slow lookup by using the dst_confirm_neigh() helper.
When MSG_PROBE is not used, ip_append_data/ip6_append_data
will set the skb flag dst_pending_confirm.

Reported-by: YueHaibing &lt;yuehaibing@huawei.com&gt;
Fixes: 5110effee8fd ("net: Do delayed neigh confirmation.")
Fixes: f2bb4bedf35d ("ipv4: Cache output routes in fib_info nexthops.")
Signed-off-by: Julian Anastasov &lt;ja@ssi.bg&gt;
Acked-by: Eric Dumazet &lt;edumazet@google.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


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