--- /dev/null
+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * lib-p30.h
+ *
+ * Top level include for library side routines
+ */
+
+#ifndef _LIB_P30_H_
+#define _LIB_P30_H_
+
+#ifdef __KERNEL__
+# include <asm/page.h>
+# include <linux/string.h>
+#else
+# include <portals/list.h>
+# include <string.h>
+#endif
+#include <portals/types.h>
+#include <linux/kp30.h>
+#include <portals/p30.h>
+#include <portals/errno.h>
+#include <portals/lib-types.h>
+#include <portals/lib-nal.h>
+#include <portals/lib-dispatch.h>
+
+static inline int ptl_is_wire_handle_none (ptl_handle_wire_t *wh)
+{
+ return (wh->wh_interface_cookie == PTL_WIRE_HANDLE_NONE.wh_interface_cookie &&
+ wh->wh_object_cookie == PTL_WIRE_HANDLE_NONE.wh_object_cookie);
+}
+
+#ifdef __KERNEL__
+#define state_lock(nal,flagsp) \
+do { \
+ CDEBUG(D_PORTALS, "taking state lock\n"); \
+ nal->cb_cli(nal, flagsp); \
+} while (0)
+
+#define state_unlock(nal,flagsp) \
+{ \
+ CDEBUG(D_PORTALS, "releasing state lock\n"); \
+ nal->cb_sti(nal, flagsp); \
+}
+#else
+/* not needed in user space until we thread there */
+#define state_lock(nal,flagsp) \
+do { \
+ CDEBUG(D_PORTALS, "taking state lock\n"); \
+ CDEBUG(D_PORTALS, "%p:%p\n", nal, flagsp); \
+} while (0)
+
+#define state_unlock(nal,flagsp) \
+{ \
+ CDEBUG(D_PORTALS, "releasing state lock\n"); \
+ CDEBUG(D_PORTALS, "%p:%p\n", nal, flagsp); \
+}
+#endif /* __KERNEL__ */
+
+#ifndef PTL_USE_SLAB_CACHE
+
+#define MAX_MES 2048
+#define MAX_MDS 2048
+#define MAX_MSGS 2048 /* Outstanding messages */
+#define MAX_EQS 512
+
+extern int lib_freelist_init (nal_cb_t *nal, lib_freelist_t *fl, int nobj, int objsize);
+extern void lib_freelist_fini (nal_cb_t *nal, lib_freelist_t *fl);
+
+static inline void *
+lib_freelist_alloc (lib_freelist_t *fl)
+{
+ /* ALWAYS called with statelock held */
+ lib_freeobj_t *o;
+
+ if (list_empty (&fl->fl_list))
+ return (NULL);
+
+ o = list_entry (fl->fl_list.next, lib_freeobj_t, fo_list);
+ list_del (&o->fo_list);
+ return ((void *)&o->fo_contents);
+}
+
+static inline void
+lib_freelist_free (lib_freelist_t *fl, void *obj)
+{
+ /* ALWAYS called with statelock held */
+ lib_freeobj_t *o = list_entry (obj, lib_freeobj_t, fo_contents);
+
+ list_add (&o->fo_list, &fl->fl_list);
+}
+
+
+static inline lib_eq_t *
+lib_eq_alloc (nal_cb_t *nal)
+{
+ /* NEVER called with statelock held */
+ unsigned long flags;
+ lib_eq_t *eq;
+
+ state_lock (nal, &flags);
+ eq = (lib_eq_t *)lib_freelist_alloc (&nal->ni.ni_free_eqs);
+ state_unlock (nal, &flags);
+
+ return (eq);
+}
+
+static inline void
+lib_eq_free (nal_cb_t *nal, lib_eq_t *eq)
+{
+ /* ALWAYS called with statelock held */
+ lib_freelist_free (&nal->ni.ni_free_eqs, eq);
+}
+
+static inline lib_md_t *
+lib_md_alloc (nal_cb_t *nal)
+{
+ /* NEVER called with statelock held */
+ unsigned long flags;
+ lib_md_t *md;
+
+ state_lock (nal, &flags);
+ md = (lib_md_t *)lib_freelist_alloc (&nal->ni.ni_free_mds);
+ state_unlock (nal, &flags);
+
+ return (md);
+}
+
+static inline void
+lib_md_free (nal_cb_t *nal, lib_md_t *md)
+{
+ /* ALWAYS called with statelock held */
+ lib_freelist_free (&nal->ni.ni_free_mds, md);
+}
+
+static inline lib_me_t *
+lib_me_alloc (nal_cb_t *nal)
+{
+ /* NEVER called with statelock held */
+ unsigned long flags;
+ lib_me_t *me;
+
+ state_lock (nal, &flags);
+ me = (lib_me_t *)lib_freelist_alloc (&nal->ni.ni_free_mes);
+ state_unlock (nal, &flags);
+
+ return (me);
+}
+
+static inline void
+lib_me_free (nal_cb_t *nal, lib_me_t *me)
+{
+ /* ALWAYS called with statelock held */
+ lib_freelist_free (&nal->ni.ni_free_mes, me);
+}
+
+static inline lib_msg_t *
+lib_msg_alloc (nal_cb_t *nal)
+{
+ /* ALWAYS called with statelock held */
+ return ((lib_msg_t *)lib_freelist_alloc (&nal->ni.ni_free_msgs));
+}
+
+static inline void
+lib_msg_free (nal_cb_t *nal, lib_msg_t *msg)
+{
+ /* ALWAYS called with statelock held */
+ lib_freelist_free (&nal->ni.ni_free_msgs, msg);
+}
+
+#else
+
+extern kmem_cache_t *ptl_md_slab;
+extern kmem_cache_t *ptl_msg_slab;
+extern kmem_cache_t *ptl_me_slab;
+extern kmem_cache_t *ptl_eq_slab;
+extern atomic_t md_in_use_count;
+extern atomic_t msg_in_use_count;
+extern atomic_t me_in_use_count;
+extern atomic_t eq_in_use_count;
+
+static inline lib_eq_t *
+lib_eq_alloc (nal_cb_t *nal)
+{
+ /* NEVER called with statelock held */
+ lib_eq_t *eq = kmem_cache_alloc(ptl_eq_slab, GFP_NOFS);
+
+ if (eq == NULL)
+ return (NULL);
+
+ atomic_inc (&eq_in_use_count);
+ return (eq);
+}
+
+static inline void
+lib_eq_free (nal_cb_t *nal, lib_eq_t *eq)
+{
+ /* ALWAYS called with statelock held */
+ atomic_dec (&eq_in_use_count);
+ kmem_cache_free(ptl_eq_slab, eq);
+}
+
+static inline lib_md_t *
+lib_md_alloc (nal_cb_t *nal)
+{
+ /* NEVER called with statelock held */
+ lib_md_t *md = kmem_cache_alloc(ptl_md_slab, GFP_NOFS);
+
+ if (md == NULL)
+ return (NULL);
+
+ atomic_inc (&md_in_use_count);
+ return (md);
+}
+
+static inline void
+lib_md_free (nal_cb_t *nal, lib_md_t *md)
+{
+ /* ALWAYS called with statelock held */
+ atomic_dec (&md_in_use_count);
+ kmem_cache_free(ptl_md_slab, md);
+}
+
+static inline lib_me_t *
+lib_me_alloc (nal_cb_t *nal)
+{
+ /* NEVER called with statelock held */
+ lib_me_t *me = kmem_cache_alloc(ptl_me_slab, GFP_NOFS);
+
+ if (me == NULL)
+ return (NULL);
+
+ atomic_inc (&me_in_use_count);
+ return (me);
+}
+
+static inline void
+lib_me_free(nal_cb_t *nal, lib_me_t *me)
+{
+ /* ALWAYS called with statelock held */
+ atomic_dec (&me_in_use_count);
+ kmem_cache_free(ptl_me_slab, me);
+}
+
+static inline lib_msg_t *
+lib_msg_alloc(nal_cb_t *nal)
+{
+ /* ALWAYS called with statelock held */
+ lib_msg_t *msg = kmem_cache_alloc(ptl_msg_slab, GFP_ATOMIC);
+
+ if (msg == NULL)
+ return (NULL);
+
+ atomic_inc (&msg_in_use_count);
+ return (msg);
+}
+
+static inline void
+lib_msg_free(nal_cb_t *nal, lib_msg_t *msg)
+{
+ /* ALWAYS called with statelock held */
+ atomic_dec (&msg_in_use_count);
+ kmem_cache_free(ptl_msg_slab, msg);
+}
+#endif
+
+extern lib_handle_t *lib_lookup_cookie (nal_cb_t *nal, __u64 cookie, int type);
+extern void lib_initialise_handle (nal_cb_t *nal, lib_handle_t *lh, int type);
+extern void lib_invalidate_handle (nal_cb_t *nal, lib_handle_t *lh);
+
+static inline void
+ptl_eq2handle (ptl_handle_eq_t *handle, lib_eq_t *eq)
+{
+ handle->cookie = eq->eq_lh.lh_cookie;
+}
+
+static inline lib_eq_t *
+ptl_handle2eq (ptl_handle_eq_t *handle, nal_cb_t *nal)
+{
+ /* ALWAYS called with statelock held */
+ lib_handle_t *lh = lib_lookup_cookie (nal, handle->cookie,
+ PTL_COOKIE_TYPE_EQ);
+ if (lh == NULL)
+ return (NULL);
+
+ return (lh_entry (lh, lib_eq_t, eq_lh));
+}
+
+static inline void
+ptl_md2handle (ptl_handle_md_t *handle, lib_md_t *md)
+{
+ handle->cookie = md->md_lh.lh_cookie;
+}
+
+static inline lib_md_t *
+ptl_handle2md (ptl_handle_md_t *handle, nal_cb_t *nal)
+{
+ /* ALWAYS called with statelock held */
+ lib_handle_t *lh = lib_lookup_cookie (nal, handle->cookie,
+ PTL_COOKIE_TYPE_MD);
+ if (lh == NULL)
+ return (NULL);
+
+ return (lh_entry (lh, lib_md_t, md_lh));
+}
+
+static inline lib_md_t *
+ptl_wire_handle2md (ptl_handle_wire_t *wh, nal_cb_t *nal)
+{
+ /* ALWAYS called with statelock held */
+ lib_handle_t *lh;
+
+ if (wh->wh_interface_cookie != nal->ni.ni_interface_cookie)
+ return (NULL);
+
+ lh = lib_lookup_cookie (nal, wh->wh_object_cookie,
+ PTL_COOKIE_TYPE_MD);
+ if (lh == NULL)
+ return (NULL);
+
+ return (lh_entry (lh, lib_md_t, md_lh));
+}
+
+static inline void
+ptl_me2handle (ptl_handle_me_t *handle, lib_me_t *me)
+{
+ handle->cookie = me->me_lh.lh_cookie;
+}
+
+static inline lib_me_t *
+ptl_handle2me (ptl_handle_me_t *handle, nal_cb_t *nal)
+{
+ /* ALWAYS called with statelock held */
+ lib_handle_t *lh = lib_lookup_cookie (nal, handle->cookie,
+ PTL_COOKIE_TYPE_ME);
+ if (lh == NULL)
+ return (NULL);
+
+ return (lh_entry (lh, lib_me_t, me_lh));
+}
+
+extern int lib_init(nal_cb_t * cb, ptl_nid_t nid, ptl_pid_t pid, int gsize,
+ ptl_pt_index_t tbl_size, ptl_ac_index_t ac_size);
+extern int lib_fini(nal_cb_t * cb);
+extern void lib_dispatch(nal_cb_t * cb, void *private, int index,
+ void *arg_block, void *ret_block);
+extern char *dispatch_name(int index);
+
+/*
+ * When the NAL detects an incoming message, it should call
+ * lib_parse() decode it. The NAL callbacks will be handed
+ * the private cookie as a way for the NAL to maintain state
+ * about which transaction is being processed. An extra parameter,
+ * lib_cookie will contain the necessary information for
+ * finalizing the message.
+ *
+ * After it has finished the handling the message, it should
+ * call lib_finalize() with the lib_cookie parameter.
+ * Call backs will be made to write events, send acks or
+ * replies and so on.
+ */
+extern int lib_parse(nal_cb_t * nal, ptl_hdr_t * hdr, void *private);
+extern int lib_finalize(nal_cb_t * nal, void *private, lib_msg_t * msg);
+extern void print_hdr(nal_cb_t * nal, ptl_hdr_t * hdr);
+
+extern ptl_size_t lib_iov_nob (int niov, struct iovec *iov);
+extern void lib_copy_iov2buf (char *dest, int niov, struct iovec *iov, ptl_size_t len);
+extern void lib_copy_buf2iov (int niov, struct iovec *iov, char *dest, ptl_size_t len);
+
+extern ptl_size_t lib_kiov_nob (int niov, ptl_kiov_t *iov);
+extern void lib_copy_kiov2buf (char *dest, int niov, ptl_kiov_t *iov, ptl_size_t len);
+extern void lib_copy_buf2kiov (int niov, ptl_kiov_t *iov, char *src, ptl_size_t len);
+extern void lib_assert_wire_constants (void);
+
+extern void lib_recv (nal_cb_t *nal, void *private, lib_msg_t *msg, lib_md_t *md,
+ ptl_size_t offset, ptl_size_t mlen, ptl_size_t rlen);
+extern int lib_send (nal_cb_t *nal, void *private, lib_msg_t *msg,
+ ptl_hdr_t *hdr, int type, ptl_nid_t nid, ptl_pid_t pid,
+ lib_md_t *md, ptl_size_t offset, ptl_size_t len);
+
+extern void lib_md_deconstruct(nal_cb_t * nal, lib_md_t * md_in,
+ ptl_md_t * md_out);
+extern void lib_md_unlink(nal_cb_t * nal, lib_md_t * md_in);
+extern void lib_me_unlink(nal_cb_t * nal, lib_me_t * me_in);
+#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff