return status;
}
+static int
+is_create_with_attrs(struct nfsd4_open *open)
+{
+ return open->op_create == NFS4_OPEN_CREATE
+ && (open->op_createmode == NFS4_CREATE_UNCHECKED
+ || open->op_createmode == NFS4_CREATE_GUARDED
+ || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
+}
+
+/*
+ * if error occurs when setting the acl, just clear the acl bit
+ * in the returned attr bitmap.
+ */
+static void
+do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ struct nfs4_acl *acl, u32 *bmval)
+{
+ __be32 status;
+
+ status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
+ if (status)
+ /*
+ * We should probably fail the whole open at this point,
+ * but we've already created the file, so it's too late;
+ * So this seems the least of evils:
+ */
+ bmval[0] &= ~FATTR4_WORD0_ACL;
+}
+
static inline void
fh_dup2(struct svc_fh *dst, struct svc_fh *src)
{
if (status)
goto out;
+ if (is_create_with_attrs(open) && open->op_acl != NULL)
+ do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval);
+
set_change_info(&open->op_cinfo, current_fh);
fh_dup2(current_fh, &resfh);
status = nfserr_badtype;
}
- if (!status) {
- fh_unlock(&cstate->current_fh);
- set_change_info(&create->cr_cinfo, &cstate->current_fh);
- fh_dup2(&cstate->current_fh, &resfh);
- }
+ if (status)
+ goto out;
+ if (create->cr_acl != NULL)
+ do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
+ create->cr_bmval);
+
+ fh_unlock(&cstate->current_fh);
+ set_change_info(&create->cr_cinfo, &cstate->current_fh);
+ fh_dup2(&cstate->current_fh, &resfh);
+out:
fh_put(&resfh);
return status;
}
static const char *nfsd4_op_name(unsigned opnum);
/*
- * This is a replay of a compound for which no cache entry pages
- * were used. Encode the sequence operation, and if cachethis is FALSE
- * encode the uncache rep error on the next operation.
- */
-static __be32
-nfsd4_enc_uncached_replay(struct nfsd4_compoundargs *args,
- struct nfsd4_compoundres *resp)
-{
- struct nfsd4_op *op;
-
- dprintk("--> %s resp->opcnt %d ce_cachethis %u \n", __func__,
- resp->opcnt, resp->cstate.slot->sl_cache_entry.ce_cachethis);
-
- /* Encode the replayed sequence operation */
- BUG_ON(resp->opcnt != 1);
- op = &args->ops[resp->opcnt - 1];
- nfsd4_encode_operation(resp, op);
-
- /*return nfserr_retry_uncached_rep in next operation. */
- if (resp->cstate.slot->sl_cache_entry.ce_cachethis == 0) {
- op = &args->ops[resp->opcnt++];
- op->status = nfserr_retry_uncached_rep;
- nfsd4_encode_operation(resp, op);
- }
- return op->status;
-}
-
-/*
* Enforce NFSv4.1 COMPOUND ordering rules.
*
* TODO:
BUG_ON(op->status == nfs_ok);
encode_op:
- /* Only from SEQUENCE or CREATE_SESSION */
+ /* Only from SEQUENCE */
if (resp->cstate.status == nfserr_replay_cache) {
dprintk("%s NFS4.1 replay from cache\n", __func__);
- if (nfsd4_not_cached(resp))
- status = nfsd4_enc_uncached_replay(args, resp);
- else
- status = op->status;
+ status = op->status;
goto out;
}
if (op->status == nfserr_replay_me) {
/*
* Give the client the number of slots it requests bound by
- * NFSD_MAX_SLOTS_PER_SESSION and by sv_drc_max_pages.
+ * NFSD_MAX_SLOTS_PER_SESSION and by nfsd_drc_max_mem.
*
- * If we run out of pages (sv_drc_pages_used == sv_drc_max_pages) we
- * should (up to a point) re-negotiate active sessions and reduce their
- * slot usage to make rooom for new connections. For now we just fail the
- * create session.
+ * If we run out of reserved DRC memory we should (up to a point) re-negotiate
+ * active sessions and reduce their slot usage to make rooom for new
+ * connections. For now we just fail the create session.
*/
static int set_forechannel_maxreqs(struct nfsd4_channel_attrs *fchan)
{
- int status = 0, np = fchan->maxreqs * NFSD_PAGES_PER_SLOT;
+ int mem;
if (fchan->maxreqs < 1)
return nfserr_inval;
else if (fchan->maxreqs > NFSD_MAX_SLOTS_PER_SESSION)
fchan->maxreqs = NFSD_MAX_SLOTS_PER_SESSION;
- spin_lock(&nfsd_serv->sv_lock);
- if (np + nfsd_serv->sv_drc_pages_used > nfsd_serv->sv_drc_max_pages)
- np = nfsd_serv->sv_drc_max_pages - nfsd_serv->sv_drc_pages_used;
- nfsd_serv->sv_drc_pages_used += np;
- spin_unlock(&nfsd_serv->sv_lock);
+ mem = fchan->maxreqs * NFSD_SLOT_CACHE_SIZE;
- if (np <= 0) {
- status = nfserr_resource;
- fchan->maxreqs = 0;
- } else
- fchan->maxreqs = np / NFSD_PAGES_PER_SLOT;
+ spin_lock(&nfsd_drc_lock);
+ if (mem + nfsd_drc_mem_used > nfsd_drc_max_mem)
+ mem = ((nfsd_drc_max_mem - nfsd_drc_mem_used) /
+ NFSD_SLOT_CACHE_SIZE) * NFSD_SLOT_CACHE_SIZE;
+ nfsd_drc_mem_used += mem;
+ spin_unlock(&nfsd_drc_lock);
- return status;
+ fchan->maxreqs = mem / NFSD_SLOT_CACHE_SIZE;
+ if (fchan->maxreqs == 0)
+ return nfserr_resource;
+ return 0;
}
/*
fchan->maxresp_sz = maxcount;
session_fchan->maxresp_sz = fchan->maxresp_sz;
- /* Set the max response cached size our default which is
- * a multiple of PAGE_SIZE and small */
- session_fchan->maxresp_cached = NFSD_PAGES_PER_SLOT * PAGE_SIZE;
+ session_fchan->maxresp_cached = NFSD_SLOT_CACHE_SIZE;
fchan->maxresp_cached = session_fchan->maxresp_cached;
/* Use the client's maxops if possible */
fchan->maxops = NFSD_MAX_OPS_PER_COMPOUND;
session_fchan->maxops = fchan->maxops;
- /* try to use the client requested number of slots */
- if (fchan->maxreqs > NFSD_MAX_SLOTS_PER_SESSION)
- fchan->maxreqs = NFSD_MAX_SLOTS_PER_SESSION;
-
/* FIXME: Error means no more DRC pages so the server should
* recover pages from existing sessions. For now fail session
* creation.
struct nfsd4_cache_entry *e = &ses->se_slots[i].sl_cache_entry;
nfsd4_release_respages(e->ce_respages, e->ce_resused);
}
+ spin_lock(&nfsd_drc_lock);
+ nfsd_drc_mem_used -= ses->se_fchannel.maxreqs * NFSD_SLOT_CACHE_SIZE;
+ spin_unlock(&nfsd_drc_lock);
kfree(ses);
}
free_client(struct nfs4_client *clp)
{
shutdown_callback_client(clp);
- nfsd4_release_respages(clp->cl_slot.sl_cache_entry.ce_respages,
- clp->cl_slot.sl_cache_entry.ce_resused);
if (clp->cl_cred.cr_group_info)
put_group_info(clp->cl_cred.cr_group_info);
kfree(clp->cl_principal);
}
/*
+ * Encode the replay sequence operation from the slot values.
+ * If cachethis is FALSE encode the uncached rep error on the next
+ * operation which sets resp->p and increments resp->opcnt for
+ * nfs4svc_encode_compoundres.
+ *
+ */
+static __be32
+nfsd4_enc_sequence_replay(struct nfsd4_compoundargs *args,
+ struct nfsd4_compoundres *resp)
+{
+ struct nfsd4_op *op;
+ struct nfsd4_slot *slot = resp->cstate.slot;
+
+ dprintk("--> %s resp->opcnt %d cachethis %u \n", __func__,
+ resp->opcnt, resp->cstate.slot->sl_cache_entry.ce_cachethis);
+
+ /* Encode the replayed sequence operation */
+ op = &args->ops[resp->opcnt - 1];
+ nfsd4_encode_operation(resp, op);
+
+ /* Return nfserr_retry_uncached_rep in next operation. */
+ if (args->opcnt > 1 && slot->sl_cache_entry.ce_cachethis == 0) {
+ op = &args->ops[resp->opcnt++];
+ op->status = nfserr_retry_uncached_rep;
+ nfsd4_encode_operation(resp, op);
+ }
+ return op->status;
+}
+
+/*
* Keep the first page of the replay. Copy the NFSv4.1 data from the first
* cached page. Replace any futher replay pages from the cache.
*/
* session inactivity timer fires and a solo sequence operation
* is sent (lease renewal).
*/
- if (seq && nfsd4_not_cached(resp)) {
- seq->maxslots = resp->cstate.session->se_fchannel.maxreqs;
- return nfs_ok;
- }
+ seq->maxslots = resp->cstate.session->se_fchannel.maxreqs;
+
+ /* Either returns 0 or nfserr_retry_uncached */
+ status = nfsd4_enc_sequence_replay(resp->rqstp->rq_argp, resp);
+ if (status == nfserr_retry_uncached_rep)
+ return status;
if (!nfsd41_copy_replay_data(resp, entry)) {
/*
exid->clientid.cl_boot = new->cl_clientid.cl_boot;
exid->clientid.cl_id = new->cl_clientid.cl_id;
- new->cl_slot.sl_seqid = 0;
exid->seqid = 1;
nfsd4_set_ex_flags(new, exid);
dprintk("nfsd4_exchange_id seqid %d flags %x\n",
- new->cl_slot.sl_seqid, new->cl_exchange_flags);
+ new->cl_cs_slot.sl_seqid, new->cl_exchange_flags);
status = nfs_ok;
out:
}
static int
-check_slot_seqid(u32 seqid, struct nfsd4_slot *slot)
+check_slot_seqid(u32 seqid, u32 slot_seqid, int slot_inuse)
{
- dprintk("%s enter. seqid %d slot->sl_seqid %d\n", __func__, seqid,
- slot->sl_seqid);
+ dprintk("%s enter. seqid %d slot_seqid %d\n", __func__, seqid,
+ slot_seqid);
/* The slot is in use, and no response has been sent. */
- if (slot->sl_inuse) {
- if (seqid == slot->sl_seqid)
+ if (slot_inuse) {
+ if (seqid == slot_seqid)
return nfserr_jukebox;
else
return nfserr_seq_misordered;
}
/* Normal */
- if (likely(seqid == slot->sl_seqid + 1))
+ if (likely(seqid == slot_seqid + 1))
return nfs_ok;
/* Replay */
- if (seqid == slot->sl_seqid)
+ if (seqid == slot_seqid)
return nfserr_replay_cache;
/* Wraparound */
- if (seqid == 1 && (slot->sl_seqid + 1) == 0)
+ if (seqid == 1 && (slot_seqid + 1) == 0)
return nfs_ok;
/* Misordered replay or misordered new request */
return nfserr_seq_misordered;
}
+/*
+ * Cache the create session result into the create session single DRC
+ * slot cache by saving the xdr structure. sl_seqid has been set.
+ * Do this for solo or embedded create session operations.
+ */
+static void
+nfsd4_cache_create_session(struct nfsd4_create_session *cr_ses,
+ struct nfsd4_clid_slot *slot, int nfserr)
+{
+ slot->sl_status = nfserr;
+ memcpy(&slot->sl_cr_ses, cr_ses, sizeof(*cr_ses));
+}
+
+static __be32
+nfsd4_replay_create_session(struct nfsd4_create_session *cr_ses,
+ struct nfsd4_clid_slot *slot)
+{
+ memcpy(cr_ses, &slot->sl_cr_ses, sizeof(*cr_ses));
+ return slot->sl_status;
+}
+
__be32
nfsd4_create_session(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate,
struct nfsd4_create_session *cr_ses)
{
u32 ip_addr = svc_addr_in(rqstp)->sin_addr.s_addr;
- struct nfsd4_compoundres *resp = rqstp->rq_resp;
struct nfs4_client *conf, *unconf;
- struct nfsd4_slot *slot = NULL;
+ struct nfsd4_clid_slot *cs_slot = NULL;
int status = 0;
nfs4_lock_state();
conf = find_confirmed_client(&cr_ses->clientid);
if (conf) {
- slot = &conf->cl_slot;
- status = check_slot_seqid(cr_ses->seqid, slot);
+ cs_slot = &conf->cl_cs_slot;
+ status = check_slot_seqid(cr_ses->seqid, cs_slot->sl_seqid, 0);
if (status == nfserr_replay_cache) {
dprintk("Got a create_session replay! seqid= %d\n",
- slot->sl_seqid);
- cstate->slot = slot;
- cstate->status = status;
+ cs_slot->sl_seqid);
/* Return the cached reply status */
- status = nfsd4_replay_cache_entry(resp, NULL);
+ status = nfsd4_replay_create_session(cr_ses, cs_slot);
goto out;
- } else if (cr_ses->seqid != conf->cl_slot.sl_seqid + 1) {
+ } else if (cr_ses->seqid != cs_slot->sl_seqid + 1) {
status = nfserr_seq_misordered;
dprintk("Sequence misordered!\n");
dprintk("Expected seqid= %d but got seqid= %d\n",
- slot->sl_seqid, cr_ses->seqid);
+ cs_slot->sl_seqid, cr_ses->seqid);
goto out;
}
- conf->cl_slot.sl_seqid++;
+ cs_slot->sl_seqid++;
} else if (unconf) {
if (!same_creds(&unconf->cl_cred, &rqstp->rq_cred) ||
(ip_addr != unconf->cl_addr)) {
goto out;
}
- slot = &unconf->cl_slot;
- status = check_slot_seqid(cr_ses->seqid, slot);
+ cs_slot = &unconf->cl_cs_slot;
+ status = check_slot_seqid(cr_ses->seqid, cs_slot->sl_seqid, 0);
if (status) {
/* an unconfirmed replay returns misordered */
status = nfserr_seq_misordered;
- goto out;
+ goto out_cache;
}
- slot->sl_seqid++; /* from 0 to 1 */
+ cs_slot->sl_seqid++; /* from 0 to 1 */
move_to_confirmed(unconf);
/*
memcpy(cr_ses->sessionid.data, conf->cl_sessionid.data,
NFS4_MAX_SESSIONID_LEN);
- cr_ses->seqid = slot->sl_seqid;
+ cr_ses->seqid = cs_slot->sl_seqid;
- slot->sl_inuse = true;
- cstate->slot = slot;
- /* Ensure a page is used for the cache */
- slot->sl_cache_entry.ce_cachethis = 1;
+out_cache:
+ /* cache solo and embedded create sessions under the state lock */
+ nfsd4_cache_create_session(cr_ses, cs_slot, status);
out:
nfs4_unlock_state();
dprintk("%s returns %d\n", __func__, ntohl(status));
slot = &session->se_slots[seq->slotid];
dprintk("%s: slotid %d\n", __func__, seq->slotid);
- status = check_slot_seqid(seq->seqid, slot);
+ status = check_slot_seqid(seq->seqid, slot->sl_seqid, slot->sl_inuse);
if (status == nfserr_replay_cache) {
cstate->slot = slot;
cstate->session = session;
dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__);
resp->cstate.slot->sl_inuse = 0;
}
- if (resp->cstate.session)
- nfsd4_put_session(resp->cstate.session);
+ nfsd4_put_session(resp->cstate.session);
}
return 1;
}
size -= len;
mesg += len;
}
-
- mutex_unlock(&nfsd_mutex);
- return (mesg-buf);
-
+ rv = mesg - buf;
out_free:
kfree(nthreads);
mutex_unlock(&nfsd_mutex);
DEFINE_MUTEX(nfsd_mutex);
struct svc_serv *nfsd_serv;
+/*
+ * nfsd_drc_lock protects nfsd_drc_max_pages and nfsd_drc_pages_used.
+ * nfsd_drc_max_pages limits the total amount of memory available for
+ * version 4.1 DRC caches.
+ * nfsd_drc_pages_used tracks the current version 4.1 DRC memory usage.
+ */
+spinlock_t nfsd_drc_lock;
+unsigned int nfsd_drc_max_mem;
+unsigned int nfsd_drc_mem_used;
+
#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
static struct svc_stat nfsd_acl_svcstats;
static struct svc_version * nfsd_acl_version[] = {
*/
static void set_max_drc(void)
{
- /* The percent of nr_free_buffer_pages used by the V4.1 server DRC */
- #define NFSD_DRC_SIZE_SHIFT 7
- nfsd_serv->sv_drc_max_pages = nr_free_buffer_pages()
- >> NFSD_DRC_SIZE_SHIFT;
- nfsd_serv->sv_drc_pages_used = 0;
- dprintk("%s svc_drc_max_pages %u\n", __func__,
- nfsd_serv->sv_drc_max_pages);
+ #define NFSD_DRC_SIZE_SHIFT 10
+ nfsd_drc_max_mem = (nr_free_buffer_pages()
+ >> NFSD_DRC_SIZE_SHIFT) * PAGE_SIZE;
+ nfsd_drc_mem_used = 0;
+ spin_lock_init(&nfsd_drc_lock);
+ dprintk("%s nfsd_drc_max_mem %u \n", __func__, nfsd_drc_max_mem);
}
int nfsd_create_serv(void)
Needs to be updated if more operations are defined in future.*/
#define FIRST_NFS4_OP OP_ACCESS
-#define LAST_NFS4_OP OP_RELEASE_LOCKOWNER
+#define LAST_NFS4_OP OP_RECLAIM_COMPLETE
enum nfsstat4 {
NFS4_OK = 0,
extern u32 nfsd_supported_minorversion;
extern struct mutex nfsd_mutex;
extern struct svc_serv *nfsd_serv;
+extern spinlock_t nfsd_drc_lock;
+extern unsigned int nfsd_drc_max_mem;
+extern unsigned int nfsd_drc_mem_used;
extern struct seq_operations nfs_exports_op;
#define NFSD_MAX_SLOTS_PER_SESSION 128
/* Maximum number of pages per slot cache entry */
#define NFSD_PAGES_PER_SLOT 1
+#define NFSD_SLOT_CACHE_SIZE PAGE_SIZE
/* Maximum number of operations per session compound */
#define NFSD_MAX_OPS_PER_COMPOUND 16
u32 rdma_attrs;
};
+struct nfsd4_create_session {
+ clientid_t clientid;
+ struct nfs4_sessionid sessionid;
+ u32 seqid;
+ u32 flags;
+ struct nfsd4_channel_attrs fore_channel;
+ struct nfsd4_channel_attrs back_channel;
+ u32 callback_prog;
+ u32 uid;
+ u32 gid;
+};
+
+/* The single slot clientid cache structure */
+struct nfsd4_clid_slot {
+ u32 sl_seqid;
+ __be32 sl_status;
+ struct nfsd4_create_session sl_cr_ses;
+};
+
struct nfsd4_session {
struct kref se_ref;
struct list_head se_hash; /* hash by sessionid */
/* for nfs41 */
struct list_head cl_sessions;
- struct nfsd4_slot cl_slot; /* create_session slot */
+ struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */
u32 cl_exchange_flags;
struct nfs4_sessionid cl_sessionid;
};
int spa_how;
};
-struct nfsd4_create_session {
- clientid_t clientid;
- struct nfs4_sessionid sessionid;
- u32 seqid;
- u32 flags;
- struct nfsd4_channel_attrs fore_channel;
- struct nfsd4_channel_attrs back_channel;
- u32 callback_prog;
- u32 uid;
- u32 gid;
-};
-
struct nfsd4_sequence {
struct nfs4_sessionid sessionid; /* request/response */
u32 seqid; /* request/response */
struct module * sv_module; /* optional module to count when
* adding threads */
svc_thread_fn sv_function; /* main function for threads */
- unsigned int sv_drc_max_pages; /* Total pages for DRC */
- unsigned int sv_drc_pages_used;/* DRC pages used */
#if defined(CONFIG_NFS_V4_1)
struct list_head sv_cb_list; /* queue for callback requests
* that arrive over the same
EXPORT_SYMBOL_GPL(sunrpc_cache_lookup);
-static void queue_loose(struct cache_detail *detail, struct cache_head *ch);
+static void cache_dequeue(struct cache_detail *detail, struct cache_head *ch);
static int cache_fresh_locked(struct cache_head *head, time_t expiry)
{
cache_revisit_request(head);
if (test_and_clear_bit(CACHE_PENDING, &head->flags)) {
cache_revisit_request(head);
- queue_loose(detail, head);
+ cache_dequeue(detail, head);
}
}
return cd->cache_upcall(cd, h);
}
+static inline int cache_is_valid(struct cache_detail *detail, struct cache_head *h)
+{
+ if (!test_bit(CACHE_VALID, &h->flags) ||
+ h->expiry_time < get_seconds())
+ return -EAGAIN;
+ else if (detail->flush_time > h->last_refresh)
+ return -EAGAIN;
+ else {
+ /* entry is valid */
+ if (test_bit(CACHE_NEGATIVE, &h->flags))
+ return -ENOENT;
+ else
+ return 0;
+ }
+}
+
/*
* This is the generic cache management routine for all
* the authentication caches.
*
*
* Returns 0 if the cache_head can be used, or cache_puts it and returns
- * -EAGAIN if upcall is pending,
- * -ETIMEDOUT if upcall failed and should be retried,
+ * -EAGAIN if upcall is pending and request has been queued
+ * -ETIMEDOUT if upcall failed or request could not be queue or
+ * upcall completed but item is still invalid (implying that
+ * the cache item has been replaced with a newer one).
* -ENOENT if cache entry was negative
*/
int cache_check(struct cache_detail *detail,
long refresh_age, age;
/* First decide return status as best we can */
- if (!test_bit(CACHE_VALID, &h->flags) ||
- h->expiry_time < get_seconds())
- rv = -EAGAIN;
- else if (detail->flush_time > h->last_refresh)
- rv = -EAGAIN;
- else {
- /* entry is valid */
- if (test_bit(CACHE_NEGATIVE, &h->flags))
- rv = -ENOENT;
- else rv = 0;
- }
+ rv = cache_is_valid(detail, h);
/* now see if we want to start an upcall */
refresh_age = (h->expiry_time - h->last_refresh);
switch (cache_make_upcall(detail, h)) {
case -EINVAL:
clear_bit(CACHE_PENDING, &h->flags);
+ cache_revisit_request(h);
if (rv == -EAGAIN) {
set_bit(CACHE_NEGATIVE, &h->flags);
cache_fresh_unlocked(h, detail,
}
}
- if (rv == -EAGAIN)
- if (cache_defer_req(rqstp, h) != 0)
- rv = -ETIMEDOUT;
-
+ if (rv == -EAGAIN) {
+ if (cache_defer_req(rqstp, h) == 0) {
+ /* Request is not deferred */
+ rv = cache_is_valid(detail, h);
+ if (rv == -EAGAIN)
+ rv = -ETIMEDOUT;
+ }
+ }
if (rv)
cache_put(h, detail);
return rv;
)
continue;
if (test_and_clear_bit(CACHE_PENDING, &ch->flags))
- queue_loose(current_detail, ch);
+ cache_dequeue(current_detail, ch);
if (atomic_read(&ch->ref.refcount) == 1)
break;
if (!ch)
current_index ++;
spin_unlock(&cache_list_lock);
- if (ch)
+ if (ch) {
+ cache_revisit_request(ch);
cache_put(ch, d);
+ }
} else
spin_unlock(&cache_list_lock);
* or continue and drop the oldest below
*/
if (net_random()&1)
- return -ETIMEDOUT;
+ return 0;
}
dreq = req->defer(req);
if (dreq == NULL)
- return -ETIMEDOUT;
+ return 0;
dreq->item = item;
if (!test_bit(CACHE_PENDING, &item->flags)) {
/* must have just been validated... */
cache_revisit_request(item);
+ return 0;
}
- return 0;
+ return 1;
}
static void cache_revisit_request(struct cache_head *item)
-static void queue_loose(struct cache_detail *detail, struct cache_head *ch)
+static void cache_dequeue(struct cache_detail *detail, struct cache_head *ch)
{
struct cache_queue *cq;
spin_lock(&queue_lock);
case 0:
*gip = ug->gi;
get_group_info(*gip);
+ cache_put(&ug->h, &unix_gid_cache);
return 0;
default:
return -EAGAIN;
}
/*
+ * See net/ipv6/ip_sockglue.c : ip_cmsg_recv_pktinfo
+ */
+static int svc_udp_get_dest_address4(struct svc_rqst *rqstp,
+ struct cmsghdr *cmh)
+{
+ struct in_pktinfo *pki = CMSG_DATA(cmh);
+ if (cmh->cmsg_type != IP_PKTINFO)
+ return 0;
+ rqstp->rq_daddr.addr.s_addr = pki->ipi_spec_dst.s_addr;
+ return 1;
+}
+
+/*
+ * See net/ipv6/datagram.c : datagram_recv_ctl
+ */
+static int svc_udp_get_dest_address6(struct svc_rqst *rqstp,
+ struct cmsghdr *cmh)
+{
+ struct in6_pktinfo *pki = CMSG_DATA(cmh);
+ if (cmh->cmsg_type != IPV6_PKTINFO)
+ return 0;
+ ipv6_addr_copy(&rqstp->rq_daddr.addr6, &pki->ipi6_addr);
+ return 1;
+}
+
+/*
* Copy the UDP datagram's destination address to the rqstp structure.
* The 'destination' address in this case is the address to which the
* peer sent the datagram, i.e. our local address. For multihomed
* hosts, this can change from msg to msg. Note that only the IP
* address changes, the port number should remain the same.
*/
-static void svc_udp_get_dest_address(struct svc_rqst *rqstp,
- struct cmsghdr *cmh)
+static int svc_udp_get_dest_address(struct svc_rqst *rqstp,
+ struct cmsghdr *cmh)
{
- struct svc_sock *svsk =
- container_of(rqstp->rq_xprt, struct svc_sock, sk_xprt);
- switch (svsk->sk_sk->sk_family) {
- case AF_INET: {
- struct in_pktinfo *pki = CMSG_DATA(cmh);
- rqstp->rq_daddr.addr.s_addr = pki->ipi_spec_dst.s_addr;
- break;
- }
- case AF_INET6: {
- struct in6_pktinfo *pki = CMSG_DATA(cmh);
- ipv6_addr_copy(&rqstp->rq_daddr.addr6, &pki->ipi6_addr);
- break;
- }
+ switch (cmh->cmsg_level) {
+ case SOL_IP:
+ return svc_udp_get_dest_address4(rqstp, cmh);
+ case SOL_IPV6:
+ return svc_udp_get_dest_address6(rqstp, cmh);
}
+
+ return 0;
}
/*
rqstp->rq_prot = IPPROTO_UDP;
- if (cmh->cmsg_level != IPPROTO_IP ||
- cmh->cmsg_type != IP_PKTINFO) {
+ if (!svc_udp_get_dest_address(rqstp, cmh)) {
if (net_ratelimit())
- printk("rpcsvc: received unknown control message:"
- "%d/%d\n",
- cmh->cmsg_level, cmh->cmsg_type);
+ printk(KERN_WARNING
+ "svc: received unknown control message %d/%d; "
+ "dropping RPC reply datagram\n",
+ cmh->cmsg_level, cmh->cmsg_type);
skb_free_datagram(svsk->sk_sk, skb);
return 0;
}
- svc_udp_get_dest_address(rqstp, cmh);
if (skb_is_nonlinear(skb)) {
/* we have to copy */
static void svc_udp_init(struct svc_sock *svsk, struct svc_serv *serv)
{
- int one = 1;
- mm_segment_t oldfs;
+ int err, level, optname, one = 1;
svc_xprt_init(&svc_udp_class, &svsk->sk_xprt, serv);
clear_bit(XPT_CACHE_AUTH, &svsk->sk_xprt.xpt_flags);
set_bit(XPT_DATA, &svsk->sk_xprt.xpt_flags);
set_bit(XPT_CHNGBUF, &svsk->sk_xprt.xpt_flags);
- oldfs = get_fs();
- set_fs(KERNEL_DS);
/* make sure we get destination address info */
- svsk->sk_sock->ops->setsockopt(svsk->sk_sock, IPPROTO_IP, IP_PKTINFO,
- (char __user *)&one, sizeof(one));
- set_fs(oldfs);
+ switch (svsk->sk_sk->sk_family) {
+ case AF_INET:
+ level = SOL_IP;
+ optname = IP_PKTINFO;
+ break;
+ case AF_INET6:
+ level = SOL_IPV6;
+ optname = IPV6_RECVPKTINFO;
+ break;
+ default:
+ BUG();
+ }
+ err = kernel_setsockopt(svsk->sk_sock, level, optname,
+ (char *)&one, sizeof(one));
+ dprintk("svc: kernel_setsockopt returned %d\n", err);
}
/*
goto err;
mr = ib_alloc_fast_reg_mr(xprt->sc_pd, RPCSVC_MAXPAGES);
- if (!mr)
+ if (IS_ERR(mr))
goto err_free_frmr;
pl = ib_alloc_fast_reg_page_list(xprt->sc_cm_id->device,
RPCSVC_MAXPAGES);
- if (!pl)
+ if (IS_ERR(pl))
goto err_free_mr;
frmr->mr = mr;
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff