Drop unused functions.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
LUSTRE_SP_ANY = 0xFF
};
-const char *sptlrpc_part2name(enum lustre_sec_part sp);
enum lustre_sec_part sptlrpc_target_sec_part(struct obd_device *obd);
/**
enum lustre_sec_part to,
lnet_nid_t nid,
struct sptlrpc_flavor *sf);
-void sptlrpc_rule_set_dump(struct sptlrpc_rule_set *set);
int sptlrpc_process_config(struct lustre_cfg *lcfg);
void sptlrpc_conf_log_start(const char *logname);
void sptlrpc_conf_log_update_begin(const char *logname);
void sptlrpc_conf_log_update_end(const char *logname);
void sptlrpc_conf_client_adapt(struct obd_device *obd);
-void sptlrpc_target_choose_flavor(struct sptlrpc_rule_set *rset,
- enum lustre_sec_part from,
- lnet_nid_t nid,
- struct sptlrpc_flavor *flavor);
/* The maximum length of security payload. 1024 is enough for Kerberos 5,
* and should be enough for other future mechanisms but not sure.
* internal apis which only used by policy implementation
*/
int sptlrpc_get_next_secid(void);
-void sptlrpc_sec_destroy(struct ptlrpc_sec *sec);
/*
* exported client context api
*/
struct ptlrpc_cli_ctx *sptlrpc_cli_ctx_get(struct ptlrpc_cli_ctx *ctx);
void sptlrpc_cli_ctx_put(struct ptlrpc_cli_ctx *ctx, int sync);
-void sptlrpc_cli_ctx_expire(struct ptlrpc_cli_ctx *ctx);
-void sptlrpc_cli_ctx_wakeup(struct ptlrpc_cli_ctx *ctx);
-int sptlrpc_cli_ctx_display(struct ptlrpc_cli_ctx *ctx, char *buf, int bufsize);
/*
* exported client context wrap/buffers
/* gc */
void sptlrpc_gc_add_sec(struct ptlrpc_sec *sec);
void sptlrpc_gc_del_sec(struct ptlrpc_sec *sec);
-void sptlrpc_gc_add_ctx(struct ptlrpc_cli_ctx *ctx);
/* misc */
const char *sec2target_str(struct ptlrpc_sec *sec);
void sptlrpc_svc_free_rs(struct ptlrpc_reply_state *rs);
void sptlrpc_svc_ctx_addref(struct ptlrpc_request *req);
void sptlrpc_svc_ctx_decref(struct ptlrpc_request *req);
-void sptlrpc_svc_ctx_invalidate(struct ptlrpc_request *req);
int sptlrpc_target_export_check(struct obd_export *exp,
struct ptlrpc_request *req);
-void sptlrpc_target_update_exp_flavor(struct obd_device *obd,
- struct sptlrpc_rule_set *rset);
-
/*
* reverse context
*/
int sptlrpc_svc_install_rvs_ctx(struct obd_import *imp,
struct ptlrpc_svc_ctx *ctx);
-int sptlrpc_cli_install_rvs_ctx(struct obd_import *imp,
- struct ptlrpc_cli_ctx *ctx);
/* bulk security api */
-int sptlrpc_enc_pool_add_user(void);
-int sptlrpc_enc_pool_del_user(void);
-int sptlrpc_enc_pool_get_pages(struct ptlrpc_bulk_desc *desc);
void sptlrpc_enc_pool_put_pages(struct ptlrpc_bulk_desc *desc);
int sptlrpc_cli_wrap_bulk(struct ptlrpc_request *req,
}
EXPORT_SYMBOL(sptlrpc_cli_ctx_put);
-/**
- * Expire the client context immediately.
- *
- * \pre Caller must hold at least 1 reference on the \a ctx.
- */
-void sptlrpc_cli_ctx_expire(struct ptlrpc_cli_ctx *ctx)
-{
- LASSERT(ctx->cc_ops->force_die);
- ctx->cc_ops->force_die(ctx, 0);
-}
-EXPORT_SYMBOL(sptlrpc_cli_ctx_expire);
-
-/**
- * To wake up the threads who are waiting for this client context. Called
- * after some status change happened on \a ctx.
- */
-void sptlrpc_cli_ctx_wakeup(struct ptlrpc_cli_ctx *ctx)
-{
- struct ptlrpc_request *req, *next;
-
- spin_lock(&ctx->cc_lock);
- list_for_each_entry_safe(req, next, &ctx->cc_req_list,
- rq_ctx_chain) {
- list_del_init(&req->rq_ctx_chain);
- ptlrpc_client_wake_req(req);
- }
- spin_unlock(&ctx->cc_lock);
-}
-EXPORT_SYMBOL(sptlrpc_cli_ctx_wakeup);
-
-int sptlrpc_cli_ctx_display(struct ptlrpc_cli_ctx *ctx, char *buf, int bufsize)
-{
- LASSERT(ctx->cc_ops);
-
- if (ctx->cc_ops->display == NULL)
- return 0;
-
- return ctx->cc_ops->display(ctx, buf, bufsize);
-}
-
static int import_sec_check_expire(struct obd_import *imp)
{
int adapt = 0;
sptlrpc_policy_put(policy);
}
-void sptlrpc_sec_destroy(struct ptlrpc_sec *sec)
-{
- sec_cop_destroy_sec(sec);
-}
-EXPORT_SYMBOL(sptlrpc_sec_destroy);
-
static void sptlrpc_sec_kill(struct ptlrpc_sec *sec)
{
LASSERT_ATOMIC_POS(&sec->ps_refcount);
sptlrpc_sec_put(sec);
}
-void sptlrpc_import_flush_root_ctx(struct obd_import *imp)
-{
- /* it's important to use grace mode, see explain in
- * sptlrpc_req_refresh_ctx() */
- import_flush_ctx_common(imp, 0, 1, 1);
-}
-
void sptlrpc_import_flush_my_ctx(struct obd_import *imp)
{
import_flush_ctx_common(imp, from_kuid(&init_user_ns, current_uid()),
req->rq_repmsg = NULL;
}
-int sptlrpc_cli_install_rvs_ctx(struct obd_import *imp,
- struct ptlrpc_cli_ctx *ctx)
-{
- struct ptlrpc_sec_policy *policy = ctx->cc_sec->ps_policy;
-
- if (!policy->sp_cops->install_rctx)
- return 0;
- return policy->sp_cops->install_rctx(imp, ctx->cc_sec, ctx);
-}
-
int sptlrpc_svc_install_rvs_ctx(struct obd_import *imp,
struct ptlrpc_svc_ctx *ctx)
{
}
EXPORT_SYMBOL(sptlrpc_target_export_check);
-void sptlrpc_target_update_exp_flavor(struct obd_device *obd,
- struct sptlrpc_rule_set *rset)
-{
- struct obd_export *exp;
- struct sptlrpc_flavor new_flvr;
-
- LASSERT(obd);
-
- spin_lock(&obd->obd_dev_lock);
-
- list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
- if (exp->exp_connection == NULL)
- continue;
-
- /* note if this export had just been updated flavor
- * (exp_flvr_changed == 1), this will override the
- * previous one. */
- spin_lock(&exp->exp_lock);
- sptlrpc_target_choose_flavor(rset, exp->exp_sp_peer,
- exp->exp_connection->c_peer.nid,
- &new_flvr);
- if (exp->exp_flvr_changed ||
- !flavor_equal(&new_flvr, &exp->exp_flvr)) {
- exp->exp_flvr_old[1] = new_flvr;
- exp->exp_flvr_expire[1] = 0;
- exp->exp_flvr_changed = 1;
- exp->exp_flvr_adapt = 1;
-
- CDEBUG(D_SEC, "exp %p (%s): updated flavor %x->%x\n",
- exp, sptlrpc_part2name(exp->exp_sp_peer),
- exp->exp_flvr.sf_rpc,
- exp->exp_flvr_old[1].sf_rpc);
- }
- spin_unlock(&exp->exp_lock);
- }
-
- spin_unlock(&obd->obd_dev_lock);
-}
-EXPORT_SYMBOL(sptlrpc_target_update_exp_flavor);
-
static int sptlrpc_svc_check_from(struct ptlrpc_request *req, int svc_rc)
{
/* peer's claim is unreliable unless gss is being used */
req->rq_svc_ctx = NULL;
}
-void sptlrpc_svc_ctx_invalidate(struct ptlrpc_request *req)
-{
- struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx;
-
- if (ctx == NULL)
- return;
-
- LASSERT_ATOMIC_POS(&ctx->sc_refcount);
- if (ctx->sc_policy->sp_sops->invalidate_ctx)
- ctx->sc_policy->sp_sops->invalidate_ctx(ctx);
-}
-EXPORT_SYMBOL(sptlrpc_svc_ctx_invalidate);
-
/****************************************
* bulk security *
****************************************/
return cleaned;
}
-/*
- * merge @npools pointed by @pools which contains @npages new pages
- * into current pools.
- *
- * we have options to avoid most memory copy with some tricks. but we choose
- * the simplest way to avoid complexity. It's not frequently called.
- */
-static void enc_pools_insert(struct page ***pools, int npools, int npages)
-{
- int freeslot;
- int op_idx, np_idx, og_idx, ng_idx;
- int cur_npools, end_npools;
-
- LASSERT(npages > 0);
- LASSERT(page_pools.epp_total_pages+npages <= page_pools.epp_max_pages);
- LASSERT(npages_to_npools(npages) == npools);
- LASSERT(page_pools.epp_growing);
-
- spin_lock(&page_pools.epp_lock);
-
- /*
- * (1) fill all the free slots of current pools.
- */
- /* free slots are those left by rent pages, and the extra ones with
- * index >= total_pages, locate at the tail of last pool. */
- freeslot = page_pools.epp_total_pages % PAGES_PER_POOL;
- if (freeslot != 0)
- freeslot = PAGES_PER_POOL - freeslot;
- freeslot += page_pools.epp_total_pages - page_pools.epp_free_pages;
-
- op_idx = page_pools.epp_free_pages / PAGES_PER_POOL;
- og_idx = page_pools.epp_free_pages % PAGES_PER_POOL;
- np_idx = npools - 1;
- ng_idx = (npages - 1) % PAGES_PER_POOL;
-
- while (freeslot) {
- LASSERT(page_pools.epp_pools[op_idx][og_idx] == NULL);
- LASSERT(pools[np_idx][ng_idx] != NULL);
-
- page_pools.epp_pools[op_idx][og_idx] = pools[np_idx][ng_idx];
- pools[np_idx][ng_idx] = NULL;
-
- freeslot--;
-
- if (++og_idx == PAGES_PER_POOL) {
- op_idx++;
- og_idx = 0;
- }
- if (--ng_idx < 0) {
- if (np_idx == 0)
- break;
- np_idx--;
- ng_idx = PAGES_PER_POOL - 1;
- }
- }
-
- /*
- * (2) add pools if needed.
- */
- cur_npools = (page_pools.epp_total_pages + PAGES_PER_POOL - 1) /
- PAGES_PER_POOL;
- end_npools = (page_pools.epp_total_pages + npages + PAGES_PER_POOL - 1)
- / PAGES_PER_POOL;
- LASSERT(end_npools <= page_pools.epp_max_pools);
-
- np_idx = 0;
- while (cur_npools < end_npools) {
- LASSERT(page_pools.epp_pools[cur_npools] == NULL);
- LASSERT(np_idx < npools);
- LASSERT(pools[np_idx] != NULL);
-
- page_pools.epp_pools[cur_npools++] = pools[np_idx];
- pools[np_idx++] = NULL;
- }
-
- page_pools.epp_total_pages += npages;
- page_pools.epp_free_pages += npages;
- page_pools.epp_st_lowfree = page_pools.epp_free_pages;
-
- if (page_pools.epp_total_pages > page_pools.epp_st_max_pages)
- page_pools.epp_st_max_pages = page_pools.epp_total_pages;
-
- CDEBUG(D_SEC, "add %d pages to total %lu\n", npages,
- page_pools.epp_total_pages);
-
- spin_unlock(&page_pools.epp_lock);
-}
-
-static int enc_pools_add_pages(int npages)
-{
- static DEFINE_MUTEX(add_pages_mutex);
- struct page ***pools;
- int npools, alloced = 0;
- int i, j, rc = -ENOMEM;
-
- if (npages < PTLRPC_MAX_BRW_PAGES)
- npages = PTLRPC_MAX_BRW_PAGES;
-
- mutex_lock(&add_pages_mutex);
-
- if (npages + page_pools.epp_total_pages > page_pools.epp_max_pages)
- npages = page_pools.epp_max_pages - page_pools.epp_total_pages;
- LASSERT(npages > 0);
-
- page_pools.epp_st_grows++;
-
- npools = npages_to_npools(npages);
- pools = kcalloc(npools, sizeof(*pools), GFP_NOFS);
- if (pools == NULL)
- goto out;
-
- for (i = 0; i < npools; i++) {
- pools[i] = kzalloc(PAGE_CACHE_SIZE, GFP_NOFS);
- if (!pools[i])
- goto out_pools;
-
- for (j = 0; j < PAGES_PER_POOL && alloced < npages; j++) {
- pools[i][j] = alloc_page(GFP_NOFS |
- __GFP_HIGHMEM);
- if (pools[i][j] == NULL)
- goto out_pools;
-
- alloced++;
- }
- }
- LASSERT(alloced == npages);
-
- enc_pools_insert(pools, npools, npages);
- CDEBUG(D_SEC, "added %d pages into pools\n", npages);
- rc = 0;
-
-out_pools:
- enc_pools_cleanup(pools, npools);
- kfree(pools);
-out:
- if (rc) {
- page_pools.epp_st_grow_fails++;
- CERROR("Failed to allocate %d enc pages\n", npages);
- }
-
- mutex_unlock(&add_pages_mutex);
- return rc;
-}
-
static inline void enc_pools_wakeup(void)
{
assert_spin_locked(&page_pools.epp_lock);
}
}
-static int enc_pools_should_grow(int page_needed, time64_t now)
-{
- /* don't grow if someone else is growing the pools right now,
- * or the pools has reached its full capacity
- */
- if (page_pools.epp_growing ||
- page_pools.epp_total_pages == page_pools.epp_max_pages)
- return 0;
-
- /* if total pages is not enough, we need to grow */
- if (page_pools.epp_total_pages < page_needed)
- return 1;
-
- /*
- * we wanted to return 0 here if there was a shrink just happened
- * moment ago, but this may cause deadlock if both client and ost
- * live on single node.
- */
-#if 0
- if (now - page_pools.epp_last_shrink < 2)
- return 0;
-#endif
-
- /*
- * here we perhaps need consider other factors like wait queue
- * length, idle index, etc. ?
- */
-
- /* grow the pools in any other cases */
- return 1;
-}
-
-/*
- * we allocate the requested pages atomically.
- */
-int sptlrpc_enc_pool_get_pages(struct ptlrpc_bulk_desc *desc)
-{
- wait_queue_t waitlink;
- unsigned long this_idle = -1;
- unsigned long tick = 0;
- long now;
- int p_idx, g_idx;
- int i;
-
- LASSERT(desc->bd_iov_count > 0);
- LASSERT(desc->bd_iov_count <= page_pools.epp_max_pages);
-
- /* resent bulk, enc iov might have been allocated previously */
- if (desc->bd_enc_iov != NULL)
- return 0;
-
- desc->bd_enc_iov = kcalloc(desc->bd_iov_count,
- sizeof(*desc->bd_enc_iov), GFP_NOFS);
- if (desc->bd_enc_iov == NULL)
- return -ENOMEM;
-
- spin_lock(&page_pools.epp_lock);
-
- page_pools.epp_st_access++;
-again:
- if (unlikely(page_pools.epp_free_pages < desc->bd_iov_count)) {
- if (tick == 0)
- tick = cfs_time_current();
-
- now = ktime_get_seconds();
-
- page_pools.epp_st_missings++;
- page_pools.epp_pages_short += desc->bd_iov_count;
-
- if (enc_pools_should_grow(desc->bd_iov_count, now)) {
- page_pools.epp_growing = 1;
-
- spin_unlock(&page_pools.epp_lock);
- enc_pools_add_pages(page_pools.epp_pages_short / 2);
- spin_lock(&page_pools.epp_lock);
-
- page_pools.epp_growing = 0;
-
- enc_pools_wakeup();
- } else {
- if (++page_pools.epp_waitqlen >
- page_pools.epp_st_max_wqlen)
- page_pools.epp_st_max_wqlen =
- page_pools.epp_waitqlen;
-
- set_current_state(TASK_UNINTERRUPTIBLE);
- init_waitqueue_entry(&waitlink, current);
- add_wait_queue(&page_pools.epp_waitq, &waitlink);
-
- spin_unlock(&page_pools.epp_lock);
- schedule();
- remove_wait_queue(&page_pools.epp_waitq, &waitlink);
- LASSERT(page_pools.epp_waitqlen > 0);
- spin_lock(&page_pools.epp_lock);
- page_pools.epp_waitqlen--;
- }
-
- LASSERT(page_pools.epp_pages_short >= desc->bd_iov_count);
- page_pools.epp_pages_short -= desc->bd_iov_count;
-
- this_idle = 0;
- goto again;
- }
-
- /* record max wait time */
- if (unlikely(tick != 0)) {
- tick = cfs_time_current() - tick;
- if (tick > page_pools.epp_st_max_wait)
- page_pools.epp_st_max_wait = tick;
- }
-
- /* proceed with rest of allocation */
- page_pools.epp_free_pages -= desc->bd_iov_count;
-
- p_idx = page_pools.epp_free_pages / PAGES_PER_POOL;
- g_idx = page_pools.epp_free_pages % PAGES_PER_POOL;
-
- for (i = 0; i < desc->bd_iov_count; i++) {
- LASSERT(page_pools.epp_pools[p_idx][g_idx] != NULL);
- desc->bd_enc_iov[i].kiov_page =
- page_pools.epp_pools[p_idx][g_idx];
- page_pools.epp_pools[p_idx][g_idx] = NULL;
-
- if (++g_idx == PAGES_PER_POOL) {
- p_idx++;
- g_idx = 0;
- }
- }
-
- if (page_pools.epp_free_pages < page_pools.epp_st_lowfree)
- page_pools.epp_st_lowfree = page_pools.epp_free_pages;
-
- /*
- * new idle index = (old * weight + new) / (weight + 1)
- */
- if (this_idle == -1) {
- this_idle = page_pools.epp_free_pages * IDLE_IDX_MAX /
- page_pools.epp_total_pages;
- }
- page_pools.epp_idle_idx = (page_pools.epp_idle_idx * IDLE_IDX_WEIGHT +
- this_idle) /
- (IDLE_IDX_WEIGHT + 1);
-
- page_pools.epp_last_access = ktime_get_seconds();
-
- spin_unlock(&page_pools.epp_lock);
- return 0;
-}
-EXPORT_SYMBOL(sptlrpc_enc_pool_get_pages);
-
void sptlrpc_enc_pool_put_pages(struct ptlrpc_bulk_desc *desc)
{
int p_idx, g_idx;
}
EXPORT_SYMBOL(sptlrpc_enc_pool_put_pages);
-/*
- * we don't do much stuff for add_user/del_user anymore, except adding some
- * initial pages in add_user() if current pools are empty, rest would be
- * handled by the pools's self-adaption.
- */
-int sptlrpc_enc_pool_add_user(void)
-{
- int need_grow = 0;
-
- spin_lock(&page_pools.epp_lock);
- if (page_pools.epp_growing == 0 && page_pools.epp_total_pages == 0) {
- page_pools.epp_growing = 1;
- need_grow = 1;
- }
- spin_unlock(&page_pools.epp_lock);
-
- if (need_grow) {
- enc_pools_add_pages(PTLRPC_MAX_BRW_PAGES +
- PTLRPC_MAX_BRW_PAGES);
-
- spin_lock(&page_pools.epp_lock);
- page_pools.epp_growing = 0;
- enc_pools_wakeup();
- spin_unlock(&page_pools.epp_lock);
- }
- return 0;
-}
-EXPORT_SYMBOL(sptlrpc_enc_pool_add_user);
-
-int sptlrpc_enc_pool_del_user(void)
-{
- return 0;
-}
-EXPORT_SYMBOL(sptlrpc_enc_pool_del_user);
-
static inline void enc_pools_alloc(void)
{
LASSERT(page_pools.epp_max_pools);
#include "ptlrpc_internal.h"
-const char *sptlrpc_part2name(enum lustre_sec_part part)
-{
- switch (part) {
- case LUSTRE_SP_CLI:
- return "cli";
- case LUSTRE_SP_MDT:
- return "mdt";
- case LUSTRE_SP_OST:
- return "ost";
- case LUSTRE_SP_MGC:
- return "mgc";
- case LUSTRE_SP_MGS:
- return "mgs";
- case LUSTRE_SP_ANY:
- return "any";
- default:
- return "err";
- }
-}
-EXPORT_SYMBOL(sptlrpc_part2name);
-
enum lustre_sec_part sptlrpc_target_sec_part(struct obd_device *obd)
{
const char *type = obd->obd_type->typ_name;
}
EXPORT_SYMBOL(sptlrpc_rule_set_choose);
-void sptlrpc_rule_set_dump(struct sptlrpc_rule_set *rset)
-{
- struct sptlrpc_rule *r;
- int n;
-
- for (n = 0; n < rset->srs_nrule; n++) {
- r = &rset->srs_rules[n];
- CDEBUG(D_SEC, "<%02d> from %x to %x, net %x, rpc %x\n", n,
- r->sr_from, r->sr_to, r->sr_netid, r->sr_flvr.sf_rpc);
- }
-}
-EXPORT_SYMBOL(sptlrpc_rule_set_dump);
-
/**********************************
* sptlrpc configuration support *
**********************************/
flavor_set_flags(sf, from, to, 1);
}
-/**
- * called by target devices, determine the expected flavor from
- * certain peer (from, nid).
- */
-void sptlrpc_target_choose_flavor(struct sptlrpc_rule_set *rset,
- enum lustre_sec_part from,
- lnet_nid_t nid,
- struct sptlrpc_flavor *sf)
-{
- if (sptlrpc_rule_set_choose(rset, from, LUSTRE_SP_ANY, nid, sf) == 0)
- get_default_flavor(sf);
-}
-EXPORT_SYMBOL(sptlrpc_target_choose_flavor);
-
#define SEC_ADAPT_DELAY (10)
/**
}
EXPORT_SYMBOL(sptlrpc_gc_del_sec);
-void sptlrpc_gc_add_ctx(struct ptlrpc_cli_ctx *ctx)
-{
- LASSERT(list_empty(&ctx->cc_gc_chain));
-
- CDEBUG(D_SEC, "hand over ctx %p(%u->%s)\n",
- ctx, ctx->cc_vcred.vc_uid, sec2target_str(ctx->cc_sec));
- spin_lock(&sec_gc_ctx_list_lock);
- list_add(&ctx->cc_gc_chain, &sec_gc_ctx_list);
- spin_unlock(&sec_gc_ctx_list_lock);
-
- thread_add_flags(&sec_gc_thread, SVC_SIGNAL);
- wake_up(&sec_gc_thread.t_ctl_waitq);
-}
-EXPORT_SYMBOL(sptlrpc_gc_add_ctx);
-
static void sec_process_ctx_list(void)
{
struct ptlrpc_cli_ctx *ctx;
projects / linux-beck.git / commitdiff