void
lnet_md_unlink(lnet_libmd_t *md)
{
- if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) == 0) {
- /* first unlink attempt... */
- lnet_me_t *me = md->md_me;
+ if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) == 0) {
+ /* first unlink attempt... */
+ lnet_me_t *me = md->md_me;
- md->md_flags |= LNET_MD_FLAG_ZOMBIE;
+ md->md_flags |= LNET_MD_FLAG_ZOMBIE;
- /* Disassociate from ME (if any), and unlink it if it was created
- * with LNET_UNLINK */
- if (me != NULL) {
+ /* Disassociate from ME (if any), and unlink it if it was created
+ * with LNET_UNLINK */
+ if (me != NULL) {
/* detach MD from portal */
lnet_ptl_detach_md(me, md);
- if (me->me_unlink == LNET_UNLINK)
- lnet_me_unlink(me);
- }
+ if (me->me_unlink == LNET_UNLINK)
+ lnet_me_unlink(me);
+ }
- /* ensure all future handle lookups fail */
+ /* ensure all future handle lookups fail */
lnet_res_lh_invalidate(&md->md_lh);
- }
+ }
- if (md->md_refcount != 0) {
- CDEBUG(D_NET, "Queueing unlink of md %p\n", md);
- return;
- }
+ if (md->md_refcount != 0) {
+ CDEBUG(D_NET, "Queueing unlink of md %p\n", md);
+ return;
+ }
- CDEBUG(D_NET, "Unlinking md %p\n", md);
+ CDEBUG(D_NET, "Unlinking md %p\n", md);
- if (md->md_eq != NULL) {
+ if (md->md_eq != NULL) {
int cpt = lnet_cpt_of_cookie(md->md_lh.lh_cookie);
LASSERT(*md->md_eq->eq_refs[cpt] > 0);
static int
lnet_md_build(lnet_libmd_t *lmd, lnet_md_t *umd, int unlink)
{
- int i;
- unsigned int niov;
- int total_length = 0;
-
- lmd->md_me = NULL;
- lmd->md_start = umd->start;
- lmd->md_offset = 0;
- lmd->md_max_size = umd->max_size;
- lmd->md_options = umd->options;
- lmd->md_user_ptr = umd->user_ptr;
+ int i;
+ unsigned int niov;
+ int total_length = 0;
+
+ lmd->md_me = NULL;
+ lmd->md_start = umd->start;
+ lmd->md_offset = 0;
+ lmd->md_max_size = umd->max_size;
+ lmd->md_options = umd->options;
+ lmd->md_user_ptr = umd->user_ptr;
lmd->md_eq = NULL;
- lmd->md_threshold = umd->threshold;
- lmd->md_refcount = 0;
- lmd->md_flags = (unlink == LNET_UNLINK) ? LNET_MD_FLAG_AUTO_UNLINK : 0;
+ lmd->md_threshold = umd->threshold;
+ lmd->md_refcount = 0;
+ lmd->md_flags = (unlink == LNET_UNLINK) ? LNET_MD_FLAG_AUTO_UNLINK : 0;
- if ((umd->options & LNET_MD_IOVEC) != 0) {
+ if ((umd->options & LNET_MD_IOVEC) != 0) {
- if ((umd->options & LNET_MD_KIOV) != 0) /* Can't specify both */
- return -EINVAL;
+ if ((umd->options & LNET_MD_KIOV) != 0) /* Can't specify both */
+ return -EINVAL;
- lmd->md_niov = niov = umd->length;
- memcpy(lmd->md_iov.iov, umd->start,
- niov * sizeof (lmd->md_iov.iov[0]));
+ lmd->md_niov = niov = umd->length;
+ memcpy(lmd->md_iov.iov, umd->start,
+ niov * sizeof(lmd->md_iov.iov[0]));
- for (i = 0; i < (int)niov; i++) {
- /* We take the base address on trust */
- if (lmd->md_iov.iov[i].iov_len <= 0) /* invalid length */
- return -EINVAL;
+ for (i = 0; i < (int)niov; i++) {
+ /* We take the base address on trust */
+ if (lmd->md_iov.iov[i].iov_len <= 0) /* invalid length */
+ return -EINVAL;
- total_length += lmd->md_iov.iov[i].iov_len;
- }
+ total_length += lmd->md_iov.iov[i].iov_len;
+ }
- lmd->md_length = total_length;
+ lmd->md_length = total_length;
- if ((umd->options & LNET_MD_MAX_SIZE) != 0 && /* max size used */
- (umd->max_size < 0 ||
- umd->max_size > total_length)) // illegal max_size
- return -EINVAL;
+ if ((umd->options & LNET_MD_MAX_SIZE) != 0 && /* max size used */
+ (umd->max_size < 0 ||
+ umd->max_size > total_length)) // illegal max_size
+ return -EINVAL;
- } else if ((umd->options & LNET_MD_KIOV) != 0) {
- lmd->md_niov = niov = umd->length;
- memcpy(lmd->md_iov.kiov, umd->start,
- niov * sizeof (lmd->md_iov.kiov[0]));
+ } else if ((umd->options & LNET_MD_KIOV) != 0) {
+ lmd->md_niov = niov = umd->length;
+ memcpy(lmd->md_iov.kiov, umd->start,
+ niov * sizeof(lmd->md_iov.kiov[0]));
- for (i = 0; i < (int)niov; i++) {
- /* We take the page pointer on trust */
- if (lmd->md_iov.kiov[i].kiov_offset +
+ for (i = 0; i < (int)niov; i++) {
+ /* We take the page pointer on trust */
+ if (lmd->md_iov.kiov[i].kiov_offset +
lmd->md_iov.kiov[i].kiov_len > PAGE_SIZE)
- return -EINVAL; /* invalid length */
-
- total_length += lmd->md_iov.kiov[i].kiov_len;
- }
-
- lmd->md_length = total_length;
-
- if ((umd->options & LNET_MD_MAX_SIZE) != 0 && /* max size used */
- (umd->max_size < 0 ||
- umd->max_size > total_length)) // illegal max_size
- return -EINVAL;
- } else { /* contiguous */
- lmd->md_length = umd->length;
- lmd->md_niov = niov = 1;
- lmd->md_iov.iov[0].iov_base = umd->start;
- lmd->md_iov.iov[0].iov_len = umd->length;
-
- if ((umd->options & LNET_MD_MAX_SIZE) != 0 && /* max size used */
- (umd->max_size < 0 ||
- umd->max_size > (int)umd->length)) // illegal max_size
- return -EINVAL;
- }
+ return -EINVAL; /* invalid length */
+
+ total_length += lmd->md_iov.kiov[i].kiov_len;
+ }
+
+ lmd->md_length = total_length;
+
+ if ((umd->options & LNET_MD_MAX_SIZE) != 0 && /* max size used */
+ (umd->max_size < 0 ||
+ umd->max_size > total_length)) // illegal max_size
+ return -EINVAL;
+ } else { /* contiguous */
+ lmd->md_length = umd->length;
+ lmd->md_niov = niov = 1;
+ lmd->md_iov.iov[0].iov_base = umd->start;
+ lmd->md_iov.iov[0].iov_len = umd->length;
+
+ if ((umd->options & LNET_MD_MAX_SIZE) != 0 && /* max size used */
+ (umd->max_size < 0 ||
+ umd->max_size > (int)umd->length)) // illegal max_size
+ return -EINVAL;
+ }
return 0;
}
* otherwise caller may only lnet_md_free() it.
*/
/* This implementation doesn't know how to create START events or
- * disable END events. Best to LASSERT our caller is compliant so
+ * disable END events. Best to LASSERT our caller is compliant so
* we find out quickly... */
/* TODO - reevaluate what should be here in light of
* the removal of the start and end events
void
lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd)
{
- /* NB this doesn't copy out all the iov entries so when a
- * discontiguous MD is copied out, the target gets to know the
- * original iov pointer (in start) and the number of entries it had
- * and that's all.
- */
- umd->start = lmd->md_start;
- umd->length = ((lmd->md_options & (LNET_MD_IOVEC | LNET_MD_KIOV)) == 0) ?
- lmd->md_length : lmd->md_niov;
- umd->threshold = lmd->md_threshold;
- umd->max_size = lmd->md_max_size;
- umd->options = lmd->md_options;
- umd->user_ptr = lmd->md_user_ptr;
- lnet_eq2handle(&umd->eq_handle, lmd->md_eq);
+ /* NB this doesn't copy out all the iov entries so when a
+ * discontiguous MD is copied out, the target gets to know the
+ * original iov pointer (in start) and the number of entries it had
+ * and that's all.
+ */
+ umd->start = lmd->md_start;
+ umd->length = ((lmd->md_options & (LNET_MD_IOVEC | LNET_MD_KIOV)) == 0) ?
+ lmd->md_length : lmd->md_niov;
+ umd->threshold = lmd->md_threshold;
+ umd->max_size = lmd->md_max_size;
+ umd->options = lmd->md_options;
+ umd->user_ptr = lmd->md_user_ptr;
+ lnet_eq2handle(&umd->eq_handle, lmd->md_eq);
}
static int
lnet_md_validate(lnet_md_t *umd)
{
- if (umd->start == NULL && umd->length != 0) {
- CERROR("MD start pointer can not be NULL with length %u\n",
- umd->length);
- return -EINVAL;
- }
-
- if ((umd->options & (LNET_MD_KIOV | LNET_MD_IOVEC)) != 0 &&
- umd->length > LNET_MAX_IOV) {
- CERROR("Invalid option: too many fragments %u, %d max\n",
- umd->length, LNET_MAX_IOV);
- return -EINVAL;
- }
-
- return 0;
+ if (umd->start == NULL && umd->length != 0) {
+ CERROR("MD start pointer can not be NULL with length %u\n",
+ umd->length);
+ return -EINVAL;
+ }
+
+ if ((umd->options & (LNET_MD_KIOV | LNET_MD_IOVEC)) != 0 &&
+ umd->length > LNET_MAX_IOV) {
+ CERROR("Invalid option: too many fragments %u, %d max\n",
+ umd->length, LNET_MAX_IOV);
+ return -EINVAL;
+ }
+
+ return 0;
}
/**
* \param handle On successful returns, a handle to the newly created MD is
* saved here. This handle can be used later in LNetMDUnlink().
*
- * \retval 0 On success.
+ * \retval 0 On success.
* \retval -EINVAL If \a umd is not valid.
* \retval -ENOMEM If new MD cannot be allocated.
* \retval -ENOENT Either \a meh or \a umd.eq_handle does not point to a
LNetMDAttach(lnet_handle_me_t meh, lnet_md_t umd,
lnet_unlink_t unlink, lnet_handle_md_t *handle)
{
- struct list_head matches = LIST_HEAD_INIT(matches);
- struct list_head drops = LIST_HEAD_INIT(drops);
+ struct list_head matches = LIST_HEAD_INIT(matches);
+ struct list_head drops = LIST_HEAD_INIT(drops);
struct lnet_me *me;
struct lnet_libmd *md;
int cpt;
int rc;
- LASSERT (the_lnet.ln_refcount > 0);
+ LASSERT(the_lnet.ln_refcount > 0);
- if (lnet_md_validate(&umd) != 0)
- return -EINVAL;
+ if (lnet_md_validate(&umd) != 0)
+ return -EINVAL;
- if ((umd.options & (LNET_MD_OP_GET | LNET_MD_OP_PUT)) == 0) {
- CERROR("Invalid option: no MD_OP set\n");
- return -EINVAL;
- }
+ if ((umd.options & (LNET_MD_OP_GET | LNET_MD_OP_PUT)) == 0) {
+ CERROR("Invalid option: no MD_OP set\n");
+ return -EINVAL;
+ }
- md = lnet_md_alloc(&umd);
- if (md == NULL)
- return -ENOMEM;
+ md = lnet_md_alloc(&umd);
+ if (md == NULL)
+ return -ENOMEM;
rc = lnet_md_build(md, &umd, unlink);
if (rc != 0)
* saved here. This handle can be used later in LNetMDUnlink(), LNetPut(),
* and LNetGet() operations.
*
- * \retval 0 On success.
+ * \retval 0 On success.
* \retval -EINVAL If \a umd is not valid.
* \retval -ENOMEM If new MD cannot be allocated.
* \retval -ENOENT \a umd.eq_handle does not point to a valid EQ. Note that
int cpt;
int rc;
- LASSERT (the_lnet.ln_refcount > 0);
+ LASSERT(the_lnet.ln_refcount > 0);
- if (lnet_md_validate(&umd) != 0)
- return -EINVAL;
+ if (lnet_md_validate(&umd) != 0)
+ return -EINVAL;
- if ((umd.options & (LNET_MD_OP_GET | LNET_MD_OP_PUT)) != 0) {
- CERROR("Invalid option: GET|PUT illegal on active MDs\n");
- return -EINVAL;
- }
+ if ((umd.options & (LNET_MD_OP_GET | LNET_MD_OP_PUT)) != 0) {
+ CERROR("Invalid option: GET|PUT illegal on active MDs\n");
+ return -EINVAL;
+ }
- md = lnet_md_alloc(&umd);
- if (md == NULL)
- return -ENOMEM;
+ md = lnet_md_alloc(&umd);
+ if (md == NULL)
+ return -ENOMEM;
rc = lnet_md_build(md, &umd, unlink);
if (rc != 0)
*
* \param mdh A handle for the MD to be unlinked.
*
- * \retval 0 On success.
+ * \retval 0 On success.
* \retval -ENOENT If \a mdh does not point to a valid MD object.
*/
int
md = lnet_handle2md(&mdh);
if (md == NULL) {
lnet_res_unlock(cpt);
- return -ENOENT;
- }
+ return -ENOENT;
+ }
md->md_flags |= LNET_MD_FLAG_ABORTED;
/* If the MD is busy, lnet_md_unlink just marks it for deletion, and
lnet_eq_enqueue_event(md->md_eq, &ev);
}
- lnet_md_unlink(md);
+ lnet_md_unlink(md);
lnet_res_unlock(cpt);
return 0;
git://git.whamcloud.com / fs / lustre-release.git / blobdiff