Date: Thu, 27 Jul 2017 23:09:12 +0000 (UTC) From: Rick Macklem <rmacklem@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r321632 - stable/11/sys/fs/nfsclient Message-ID: <201707272309.v6RN9CUs029717@repo.freebsd.org>
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Author: rmacklem Date: Thu Jul 27 23:09:12 2017 New Revision: 321632 URL: https://svnweb.freebsd.org/changeset/base/321632 Log: MFC: r321314 r320062 introduced a bug when doing NFSv4.1 mounts against some non-FreeBSD servers. r320062 used nm_rsize, nm_wsize to set the maximum request/response sizes for the NFSv4.1 session. If rsize,wsize are not specified as options, the value of nm_rsize, nm_wsize is 0 at session creation, resulting in values for request/response that are too small. This patch fixes the problem. A workaround is to specify rsize=N,wsize=N mount options explicitly, so they are set before session creation. This bug only affects NFSv4.1 mounts against some non-FreeBSD servers. Modified: stable/11/sys/fs/nfsclient/nfs_clrpcops.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/fs/nfsclient/nfs_clrpcops.c ============================================================================== --- stable/11/sys/fs/nfsclient/nfs_clrpcops.c Thu Jul 27 23:01:07 2017 (r321631) +++ stable/11/sys/fs/nfsclient/nfs_clrpcops.c Thu Jul 27 23:09:12 2017 (r321632) @@ -4664,6 +4664,11 @@ nfsrpc_createsession(struct nfsmount *nmp, struct nfsc struct nfsrv_descript *nd = &nfsd; int error, irdcnt; + /* Make sure nm_rsize, nm_wsize is set. */ + if (nmp->nm_rsize > NFS_MAXBSIZE || nmp->nm_rsize == 0) + nmp->nm_rsize = NFS_MAXBSIZE; + if (nmp->nm_wsize > NFS_MAXBSIZE || nmp->nm_wsize == 0) + nmp->nm_wsize = NFS_MAXBSIZE; nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); *tl++ = sep->nfsess_clientid.lval[0];
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