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From: Chuck Lever <chuck.lever@oracle.com>
To: Neil Brown <neilb@suse.de>, Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: nfs@lists.sourceforge.net
Subject: Use of delayed request information in nlmsvc_lookup_host
Date: Wed, 14 Nov 2007 13:23:07 -0500	[thread overview]
Message-ID: <473B3D0B.3060204@oracle.com> (raw)

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Hi-

Historical question here.

nlmsvc_lookup_host() has this:

struct nlm_host *
nlmsvc_lookup_host(struct svc_rqst *rqstp,
                         const char *hostname, unsigned int hostname_len)
{
         struct sockaddr_in ssin = {0};

 >>>     ssin.sin_addr = rqstp->rq_daddr.addr;
         return nlm_lookup_host(1, svc_addr_in(rqstp),
                                rqstp->rq_prot, rqstp->rq_vers,
                                hostname, hostname_len, &ssin);
}

Why is it using rq_daddr to construct the lookup target?

The problem here is that rq_daddr isn't a full address.  It doesn't have 
address family information.  So nlmsvc_lookup_host() just assumes that 
what's stored in rq_daddr is always AF_INET.

As I started adding support for AF_INET6 to lockd, I noticed that 
there's no way for nlmsvc_lookup_host() to know that it should construct 
a sockaddr_in6 instead.

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             reply	other threads:[~2007-11-14 18:25 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-11-14 18:23 Chuck Lever [this message]
2007-11-14 18:43 ` Use of delayed request information in nlmsvc_lookup_host Trond Myklebust
2007-11-14 19:00   ` Chuck Lever
2007-11-14 19:32     ` J. Bruce Fields
2007-11-14 19:41     ` Trond Myklebust
2007-11-14 19:50       ` Trond Myklebust
2007-11-14 19:54       ` Chuck Lever
2007-11-15  1:41         ` Neil Brown
2007-11-15 13:55           ` Chuck Lever
2007-11-15 15:54             ` Trond Myklebust
2007-11-15 16:26               ` Chuck Lever
2007-11-15 17:00                 ` Chuck Lever
2007-11-15 17:23               ` Chuck Lever
2007-11-15 17:37                 ` Trond Myklebust
2007-11-15 18:02                   ` Chuck Lever
2007-11-15 16:00             ` Frank van Maarseveen

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