From f8181b5e0e2fc6d328386471fc5a67f6686957aa Mon Sep 17 00:00:00 2001 From: Rick Macklem Date: Fri, 21 Jul 2017 00:14:43 +0000 Subject: [PATCH] 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. MFC after: 1 week --- sys/fs/nfsclient/nfs_clrpcops.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/sys/fs/nfsclient/nfs_clrpcops.c b/sys/fs/nfsclient/nfs_clrpcops.c index 23cc47f5c69c..c76f20e2507e 100644 --- a/sys/fs/nfsclient/nfs_clrpcops.c +++ b/sys/fs/nfsclient/nfs_clrpcops.c @@ -4674,6 +4674,11 @@ nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 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];