nfsd4: support BIND_CONN_TO_SESSION

Basic xdr and processing for BIND_CONN_TO_SESSION.  This adds a
connection to the list of connections associated with a session.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 32 insertions, 2 deletions

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index ca3786905dec..4ff2c9e0b276 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -421,6 +421,21 @@ nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access
         DECODE_TAIL;
 }
 
+static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts)
+{
+        DECODE_HEAD;
+        u32 dummy;
+
+        READ_BUF(NFS4_MAX_SESSIONID_LEN + 8);
+        COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+        READ32(bcts->dir);
+        /* XXX: Perhaps Tom Tucker could help us figure out how we
+         * should be using ctsa_use_conn_in_rdma_mode: */
+        READ32(dummy);
+
+        DECODE_TAIL;
+}
+
 static __be32
 nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close)
 {
@@ -1359,7 +1374,7 @@ static nfsd4_dec nfsd41_dec_ops[] = {
 
         /* new operations for NFSv4.1 */
         [OP_BACKCHANNEL_CTL]    = (nfsd4_dec)nfsd4_decode_notsupp,
-        [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_notsupp,
+        [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session,
         [OP_EXCHANGE_ID]        = (nfsd4_dec)nfsd4_decode_exchange_id,
         [OP_CREATE_SESSION]     = (nfsd4_dec)nfsd4_decode_create_session,
         [OP_DESTROY_SESSION]    = (nfsd4_dec)nfsd4_decode_destroy_session,
@@ -2383,6 +2398,21 @@ nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_
         return nfserr;
 }
 
+static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts)
+{
+        __be32 *p;
+
+        if (!nfserr) {
+                RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8);
+                WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+                WRITE32(bcts->dir);
+                /* XXX: ? */
+                WRITE32(0);
+                ADJUST_ARGS();
+        }
+        return nfserr;
+}
+
 static __be32
 nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close)
 {
@@ -3174,7 +3204,7 @@ static nfsd4_enc nfsd4_enc_ops[] = {
 
         /* NFSv4.1 operations */
         [OP_BACKCHANNEL_CTL]    = (nfsd4_enc)nfsd4_encode_noop,
-        [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_noop,
+        [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session,
         [OP_EXCHANGE_ID]        = (nfsd4_enc)nfsd4_encode_exchange_id,
         [OP_CREATE_SESSION]     = (nfsd4_enc)nfsd4_encode_create_session,
         [OP_DESTROY_SESSION]    = (nfsd4_enc)nfsd4_encode_destroy_session,