Merge branch 'for-2.6.27' of git://linux-nfs.org/~bfields/linux

* 'for-2.6.27' of git://linux-nfs.org/~bfields/linux: (51 commits)
  nfsd: nfs4xdr.c do-while is not a compound statement
  nfsd: Use C99 initializers in fs/nfsd/nfs4xdr.c
  lockd: Pass "struct sockaddr *" to new failover-by-IP function
  lockd: get host reference in nlmsvc_create_block() instead of callers
  lockd: minor svclock.c style fixes
  lockd: eliminate duplicate nlmsvc_lookup_host call from nlmsvc_lock
  lockd: eliminate duplicate nlmsvc_lookup_host call from nlmsvc_testlock
  lockd: nlm_release_host() checks for NULL, caller needn't
  file lock: reorder struct file_lock to save space on 64 bit builds
  nfsd: take file and mnt write in nfs4_upgrade_open
  nfsd: document open share bit tracking
  nfsd: tabulate nfs4 xdr encoding functions
  nfsd: dprint operation names
  svcrdma: Change WR context get/put to use the kmem cache
  svcrdma: Create a kmem cache for the WR contexts
  svcrdma: Add flush_scheduled_work to module exit function
  svcrdma: Limit ORD based on client's advertised IRD
  svcrdma: Remove unused wait q from svcrdma_xprt structure
  svcrdma: Remove unneeded spin locks from __svc_rdma_free
  svcrdma: Add dma map count and WARN_ON
  ...

3 files changed, 35 insertions, 11 deletions

diff --git a/include/linux/sunrpc/gss_krb5.h b/include/linux/sunrpc/gss_krb5.h
index a10f1fb0bf7c..e7bbdba474d5 100644
--- a/include/linux/sunrpc/gss_krb5.h
+++ b/include/linux/sunrpc/gss_krb5.h
@@ -51,6 +51,9 @@ struct krb5_ctx {
 
 extern spinlock_t krb5_seq_lock;
 
+/* The length of the Kerberos GSS token header */
+#define GSS_KRB5_TOK_HDR_LEN    (16)
+
 #define KG_TOK_MIC_MSG    0x0101
 #define KG_TOK_WRAP_MSG   0x0201
 
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 4b54c5fdcfd9..dc69068d94c7 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -22,7 +22,7 @@
 /*
  * This is the RPC server thread function prototype
  */
-typedef void            (*svc_thread_fn)(struct svc_rqst *);
+typedef int             (*svc_thread_fn)(void *);
 
 /*
  *
@@ -80,7 +80,6 @@ struct svc_serv {
         struct module *         sv_module;      /* optional module to count when
                                                  * adding threads */
         svc_thread_fn           sv_function;    /* main function for threads */
-        int                     sv_kill_signal; /* signal to kill threads */
 };
 
 /*
@@ -388,8 +387,8 @@ struct svc_rqst *svc_prepare_thread(struct svc_serv *serv,
                                         struct svc_pool *pool);
 void               svc_exit_thread(struct svc_rqst *);
 struct svc_serv *  svc_create_pooled(struct svc_program *, unsigned int,
-                        void (*shutdown)(struct svc_serv*),
-                        svc_thread_fn, int sig, struct module *);
+                        void (*shutdown)(struct svc_serv*), svc_thread_fn,
+                        struct module *);
 int                svc_set_num_threads(struct svc_serv *, struct svc_pool *, int);
 void               svc_destroy(struct svc_serv *);
 int                svc_process(struct svc_rqst *);
diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h
index 05eb4664d0dd..ef2e3a20bf3b 100644
--- a/include/linux/sunrpc/svc_rdma.h
+++ b/include/linux/sunrpc/svc_rdma.h
@@ -72,7 +72,7 @@ extern atomic_t rdma_stat_sq_prod;
  */
 struct svc_rdma_op_ctxt {
         struct svc_rdma_op_ctxt *read_hdr;
-        struct list_head free_list;
+        int hdr_count;
         struct xdr_buf arg;
         struct list_head dto_q;
         enum ib_wr_opcode wr_op;
@@ -86,6 +86,31 @@ struct svc_rdma_op_ctxt {
         struct page *pages[RPCSVC_MAXPAGES];
 };
 
+/*
+ * NFS_ requests are mapped on the client side by the chunk lists in
+ * the RPCRDMA header. During the fetching of the RPC from the client
+ * and the writing of the reply to the client, the memory in the
+ * client and the memory in the server must be mapped as contiguous
+ * vaddr/len for access by the hardware. These data strucures keep
+ * these mappings.
+ *
+ * For an RDMA_WRITE, the 'sge' maps the RPC REPLY. For RDMA_READ, the
+ * 'sge' in the svc_rdma_req_map maps the server side RPC reply and the
+ * 'ch' field maps the read-list of the RPCRDMA header to the 'sge'
+ * mapping of the reply.
+ */
+struct svc_rdma_chunk_sge {
+        int start;              /* sge no for this chunk */
+        int count;              /* sge count for this chunk */
+};
+struct svc_rdma_req_map {
+        unsigned long count;
+        union {
+                struct kvec sge[RPCSVC_MAXPAGES];
+                struct svc_rdma_chunk_sge ch[RPCSVC_MAXPAGES];
+        };
+};
+
 #define RDMACTXT_F_LAST_CTXT    2
 
 struct svcxprt_rdma {
@@ -93,7 +118,6 @@ struct svcxprt_rdma {
         struct rdma_cm_id    *sc_cm_id;         /* RDMA connection id */
         struct list_head     sc_accept_q;       /* Conn. waiting accept */
         int                  sc_ord;            /* RDMA read limit */
-        wait_queue_head_t    sc_read_wait;
         int                  sc_max_sge;
 
         int                  sc_sq_depth;       /* Depth of SQ */
@@ -104,12 +128,8 @@ struct svcxprt_rdma {
 
         struct ib_pd         *sc_pd;
 
+        atomic_t             sc_dma_used;
         atomic_t             sc_ctxt_used;
-        struct list_head     sc_ctxt_free;
-        int                  sc_ctxt_cnt;
-        int                  sc_ctxt_bump;
-        int                  sc_ctxt_max;
-        spinlock_t           sc_ctxt_lock;
         struct list_head     sc_rq_dto_q;
         spinlock_t           sc_rq_dto_lock;
         struct ib_qp         *sc_qp;
@@ -173,6 +193,8 @@ extern int svc_rdma_post_recv(struct svcxprt_rdma *);
 extern int svc_rdma_create_listen(struct svc_serv *, int, struct sockaddr *);
 extern struct svc_rdma_op_ctxt *svc_rdma_get_context(struct svcxprt_rdma *);
 extern void svc_rdma_put_context(struct svc_rdma_op_ctxt *, int);
+extern struct svc_rdma_req_map *svc_rdma_get_req_map(void);
+extern void svc_rdma_put_req_map(struct svc_rdma_req_map *);
 extern void svc_sq_reap(struct svcxprt_rdma *);
 extern void svc_rq_reap(struct svcxprt_rdma *);
 extern struct svc_xprt_class svc_rdma_class;