#include <obd_support.h>
#include <obd_class.h>
#include <libcfs/libcfs.h>
+#include <lustre_req_layout.h>
#include "ptlrpc_internal.h"
/**
memcpy(rule->tr_name, start->tc_name, strlen(start->tc_name));
rule->tr_rpc_rate = start->u.tc_start.ts_rpc_rate;
+ rule->tr_flags = start->u.tc_start.ts_rule_flags;
rule->tr_nsecs = NSEC_PER_SEC;
do_div(rule->tr_nsecs, rule->tr_rpc_rate);
rule->tr_depth = tbf_depth;
head->th_rule = rule;
}
+ CDEBUG(D_RPCTRACE, "TBF starts rule@%p rate %llu gen %llu\n",
+ rule, rule->tr_rpc_rate, rule->tr_generation);
+
return 0;
}
cli1 = container_of(e1, struct nrs_tbf_client, tc_node);
cli2 = container_of(e2, struct nrs_tbf_client, tc_node);
- if (cli1->tc_check_time + cli1->tc_nsecs <
- cli2->tc_check_time + cli2->tc_nsecs)
+ if (cli1->tc_deadline < cli2->tc_deadline)
return 1;
- else if (cli1->tc_check_time + cli1->tc_nsecs >
- cli2->tc_check_time + cli2->tc_nsecs)
+ else if (cli1->tc_deadline > cli2->tc_deadline)
return 0;
if (cli1->tc_check_time < cli2->tc_check_time)
return cli->tc_jobid;
}
-static void *nrs_tbf_jobid_hop_object(struct hlist_node *hnode)
+static void *nrs_tbf_hop_object(struct hlist_node *hnode)
{
return hlist_entry(hnode, struct nrs_tbf_client, tc_hnode);
}
.hs_hash = nrs_tbf_jobid_hop_hash,
.hs_keycmp = nrs_tbf_jobid_hop_keycmp,
.hs_key = nrs_tbf_jobid_hop_key,
- .hs_object = nrs_tbf_jobid_hop_object,
+ .hs_object = nrs_tbf_hop_object,
.hs_get = nrs_tbf_jobid_hop_get,
.hs_put = nrs_tbf_jobid_hop_put,
.hs_put_locked = nrs_tbf_jobid_hop_put,
struct hlist_node *hnode;
struct nrs_tbf_client *cli;
- /* cfs_hash_bd_peek_locked is a somehow "internal" function
- * of cfs_hash, it doesn't add refcount on object. */
- hnode = cfs_hash_bd_peek_locked(hs, bd, (void *)jobid);
+ hnode = cfs_hash_bd_lookup_locked(hs, bd, (void *)jobid);
if (hnode == NULL)
return NULL;
- cfs_hash_get(hs, hnode);
cli = container_of0(hnode, struct nrs_tbf_client, tc_hnode);
if (!list_empty(&cli->tc_lru))
list_del_init(&cli->tc_lru);
start.tc_name = NRS_TBF_DEFAULT_RULE;
INIT_LIST_HEAD(&start.u.tc_start.ts_jobids);
rc = nrs_tbf_rule_start(policy, head, &start);
+ if (rc) {
+ cfs_hash_putref(head->th_cli_hash);
+ head->th_cli_hash = NULL;
+ }
return rc;
}
list_for_each_entry_safe(jobid, n, jobid_list, tj_linkage) {
OBD_FREE(jobid->tj_id, strlen(jobid->tj_id) + 1);
list_del(&jobid->tj_linkage);
- OBD_FREE(jobid, sizeof(struct nrs_tbf_jobid));
+ OBD_FREE_PTR(jobid);
}
}
static int
-nrs_tbf_jobid_list_add(const struct cfs_lstr *id, struct list_head *jobid_list)
+nrs_tbf_jobid_list_add(struct cfs_lstr *id, struct list_head *jobid_list)
{
struct nrs_tbf_jobid *jobid;
+ char *ptr;
- OBD_ALLOC(jobid, sizeof(struct nrs_tbf_jobid));
+ OBD_ALLOC_PTR(jobid);
if (jobid == NULL)
return -ENOMEM;
OBD_ALLOC(jobid->tj_id, id->ls_len + 1);
if (jobid->tj_id == NULL) {
- OBD_FREE(jobid, sizeof(struct nrs_tbf_jobid));
+ OBD_FREE_PTR(jobid);
return -ENOMEM;
}
memcpy(jobid->tj_id, id->ls_str, id->ls_len);
+ ptr = lprocfs_strnstr(id->ls_str, "*", id->ls_len);
+ if (ptr == NULL)
+ jobid->tj_match_flag = NRS_TBF_MATCH_FULL;
+ else
+ jobid->tj_match_flag = NRS_TBF_MATCH_WILDCARD;
+
list_add_tail(&jobid->tj_linkage, jobid_list);
return 0;
}
+static bool
+cfs_match_wildcard(const char *pattern, const char *content)
+{
+ if (*pattern == '\0' && *content == '\0')
+ return true;
+
+ if (*pattern == '*' && *(pattern + 1) != '\0' && *content == '\0')
+ return false;
+
+ while (*pattern == *content) {
+ pattern++;
+ content++;
+ if (*pattern == '\0' && *content == '\0')
+ return true;
+
+ if (*pattern == '*' && *(pattern + 1) != '\0' &&
+ *content == '\0')
+ return false;
+ }
+
+ if (*pattern == '*')
+ return (cfs_match_wildcard(pattern + 1, content) ||
+ cfs_match_wildcard(pattern, content + 1));
+
+ return false;
+}
+
+static inline bool
+nrs_tbf_jobid_match(const struct nrs_tbf_jobid *jobid, const char *id)
+{
+ if (jobid->tj_match_flag == NRS_TBF_MATCH_FULL)
+ return strcmp(jobid->tj_id, id) == 0;
+
+ if (jobid->tj_match_flag == NRS_TBF_MATCH_WILDCARD)
+ return cfs_match_wildcard(jobid->tj_id, id);
+
+ return false;
+}
+
static int
nrs_tbf_jobid_list_match(struct list_head *jobid_list, char *id)
{
struct nrs_tbf_jobid *jobid;
list_for_each_entry(jobid, jobid_list, tj_linkage) {
- if (strcmp(id, jobid->tj_id) == 0)
+ if (nrs_tbf_jobid_match(jobid, id))
return 1;
}
return 0;
return &cli->tc_nid;
}
-static void *nrs_tbf_nid_hop_object(struct hlist_node *hnode)
-{
- return hlist_entry(hnode, struct nrs_tbf_client, tc_hnode);
-}
-
static void nrs_tbf_nid_hop_get(struct cfs_hash *hs, struct hlist_node *hnode)
{
struct nrs_tbf_client *cli = hlist_entry(hnode,
.hs_hash = nrs_tbf_nid_hop_hash,
.hs_keycmp = nrs_tbf_nid_hop_keycmp,
.hs_key = nrs_tbf_nid_hop_key,
- .hs_object = nrs_tbf_nid_hop_object,
+ .hs_object = nrs_tbf_hop_object,
.hs_get = nrs_tbf_nid_hop_get,
.hs_put = nrs_tbf_nid_hop_put,
.hs_put_locked = nrs_tbf_nid_hop_put,
start.tc_name = NRS_TBF_DEFAULT_RULE;
INIT_LIST_HEAD(&start.u.tc_start.ts_nids);
rc = nrs_tbf_rule_start(policy, head, &start);
+ if (rc) {
+ cfs_hash_putref(head->th_cli_hash);
+ head->th_cli_hash = NULL;
+ }
return rc;
}
.o_rule_fini = nrs_tbf_nid_rule_fini,
};
+static unsigned nrs_tbf_hop_hash(struct cfs_hash *hs, const void *key,
+ unsigned mask)
+{
+ return cfs_hash_djb2_hash(key, strlen(key), mask);
+}
+
+static int nrs_tbf_hop_keycmp(const void *key, struct hlist_node *hnode)
+{
+ struct nrs_tbf_client *cli = hlist_entry(hnode,
+ struct nrs_tbf_client,
+ tc_hnode);
+
+ return (strcmp(cli->tc_key, key) == 0);
+}
+
+static void *nrs_tbf_hop_key(struct hlist_node *hnode)
+{
+ struct nrs_tbf_client *cli = hlist_entry(hnode,
+ struct nrs_tbf_client,
+ tc_hnode);
+ return cli->tc_key;
+}
+
+static void nrs_tbf_hop_get(struct cfs_hash *hs, struct hlist_node *hnode)
+{
+ struct nrs_tbf_client *cli = hlist_entry(hnode,
+ struct nrs_tbf_client,
+ tc_hnode);
+
+ atomic_inc(&cli->tc_ref);
+}
+
+static void nrs_tbf_hop_put(struct cfs_hash *hs, struct hlist_node *hnode)
+{
+ struct nrs_tbf_client *cli = hlist_entry(hnode,
+ struct nrs_tbf_client,
+ tc_hnode);
+
+ atomic_dec(&cli->tc_ref);
+}
+
+static void nrs_tbf_hop_exit(struct cfs_hash *hs, struct hlist_node *hnode)
+
+{
+ struct nrs_tbf_client *cli = hlist_entry(hnode,
+ struct nrs_tbf_client,
+ tc_hnode);
+
+ LASSERT(atomic_read(&cli->tc_ref) == 0);
+ nrs_tbf_cli_fini(cli);
+}
+
+static struct cfs_hash_ops nrs_tbf_hash_ops = {
+ .hs_hash = nrs_tbf_hop_hash,
+ .hs_keycmp = nrs_tbf_hop_keycmp,
+ .hs_key = nrs_tbf_hop_key,
+ .hs_object = nrs_tbf_hop_object,
+ .hs_get = nrs_tbf_hop_get,
+ .hs_put = nrs_tbf_hop_put,
+ .hs_put_locked = nrs_tbf_hop_put,
+ .hs_exit = nrs_tbf_hop_exit,
+};
+
+#define NRS_TBF_GENERIC_BKT_BITS 10
+#define NRS_TBF_GENERIC_HASH_FLAGS (CFS_HASH_SPIN_BKTLOCK | \
+ CFS_HASH_NO_ITEMREF | \
+ CFS_HASH_DEPTH)
+
+static int
+nrs_tbf_startup(struct ptlrpc_nrs_policy *policy, struct nrs_tbf_head *head)
+{
+ struct nrs_tbf_cmd start;
+ struct nrs_tbf_bucket *bkt;
+ int bits;
+ int i;
+ int rc;
+ struct cfs_hash_bd bd;
+
+ bits = nrs_tbf_jobid_hash_order();
+ if (bits < NRS_TBF_GENERIC_BKT_BITS)
+ bits = NRS_TBF_GENERIC_BKT_BITS;
+ head->th_cli_hash = cfs_hash_create("nrs_tbf_hash",
+ bits, bits,
+ NRS_TBF_GENERIC_BKT_BITS,
+ sizeof(*bkt), 0, 0,
+ &nrs_tbf_hash_ops,
+ NRS_TBF_GENERIC_HASH_FLAGS);
+ if (head->th_cli_hash == NULL)
+ return -ENOMEM;
+
+ cfs_hash_for_each_bucket(head->th_cli_hash, &bd, i) {
+ bkt = cfs_hash_bd_extra_get(head->th_cli_hash, &bd);
+ INIT_LIST_HEAD(&bkt->ntb_lru);
+ }
+
+ memset(&start, 0, sizeof(start));
+ start.u.tc_start.ts_conds_str = "*";
+
+ start.u.tc_start.ts_rpc_rate = tbf_rate;
+ start.u.tc_start.ts_rule_flags = NTRS_DEFAULT;
+ start.tc_name = NRS_TBF_DEFAULT_RULE;
+ INIT_LIST_HEAD(&start.u.tc_start.ts_conds);
+ rc = nrs_tbf_rule_start(policy, head, &start);
+ if (rc)
+ cfs_hash_putref(head->th_cli_hash);
+
+ return rc;
+}
+
+static struct nrs_tbf_client *
+nrs_tbf_cli_hash_lookup(struct cfs_hash *hs, struct cfs_hash_bd *bd,
+ const char *key)
+{
+ struct hlist_node *hnode;
+ struct nrs_tbf_client *cli;
+
+ hnode = cfs_hash_bd_lookup_locked(hs, bd, (void *)key);
+ if (hnode == NULL)
+ return NULL;
+
+ cli = container_of0(hnode, struct nrs_tbf_client, tc_hnode);
+ if (!list_empty(&cli->tc_lru))
+ list_del_init(&cli->tc_lru);
+ return cli;
+}
+
+/**
+ * ONLY opcode presented in this function will be checked in
+ * nrs_tbf_id_cli_set(). That means, we can add or remove an
+ * opcode to enable or disable requests handled in nrs_tbf
+ */
+static struct req_format *req_fmt(__u32 opcode)
+{
+ switch (opcode) {
+ case OST_GETATTR:
+ return &RQF_OST_GETATTR;
+ case OST_SETATTR:
+ return &RQF_OST_SETATTR;
+ case OST_READ:
+ return &RQF_OST_BRW_READ;
+ case OST_WRITE:
+ return &RQF_OST_BRW_WRITE;
+ /* FIXME: OST_CREATE and OST_DESTROY comes from MDS
+ * in most case. Should they be removed? */
+ case OST_CREATE:
+ return &RQF_OST_CREATE;
+ case OST_DESTROY:
+ return &RQF_OST_DESTROY;
+ case OST_PUNCH:
+ return &RQF_OST_PUNCH;
+ case OST_SYNC:
+ return &RQF_OST_SYNC;
+ case OST_LADVISE:
+ return &RQF_OST_LADVISE;
+ case MDS_GETATTR:
+ return &RQF_MDS_GETATTR;
+ case MDS_GETATTR_NAME:
+ return &RQF_MDS_GETATTR_NAME;
+ /* close is skipped to avoid LDLM cancel slowness */
+#if 0
+ case MDS_CLOSE:
+ return &RQF_MDS_CLOSE;
+#endif
+ case MDS_REINT:
+ return &RQF_MDS_REINT;
+ case MDS_READPAGE:
+ return &RQF_MDS_READPAGE;
+ case MDS_GET_ROOT:
+ return &RQF_MDS_GET_ROOT;
+ case MDS_STATFS:
+ return &RQF_MDS_STATFS;
+ case MDS_SYNC:
+ return &RQF_MDS_SYNC;
+ case MDS_QUOTACTL:
+ return &RQF_MDS_QUOTACTL;
+ case MDS_GETXATTR:
+ return &RQF_MDS_GETXATTR;
+ case MDS_GET_INFO:
+ return &RQF_MDS_GET_INFO;
+ /* HSM op is skipped */
+#if 0
+ case MDS_HSM_STATE_GET:
+ return &RQF_MDS_HSM_STATE_GET;
+ case MDS_HSM_STATE_SET:
+ return &RQF_MDS_HSM_STATE_SET;
+ case MDS_HSM_ACTION:
+ return &RQF_MDS_HSM_ACTION;
+ case MDS_HSM_CT_REGISTER:
+ return &RQF_MDS_HSM_CT_REGISTER;
+ case MDS_HSM_CT_UNREGISTER:
+ return &RQF_MDS_HSM_CT_UNREGISTER;
+#endif
+ case MDS_SWAP_LAYOUTS:
+ return &RQF_MDS_SWAP_LAYOUTS;
+ case LDLM_ENQUEUE:
+ return &RQF_LDLM_ENQUEUE;
+ default:
+ return NULL;
+ }
+}
+
+static struct req_format *intent_req_fmt(__u32 it_opc)
+{
+ if (it_opc & (IT_OPEN | IT_CREAT))
+ return &RQF_LDLM_INTENT_OPEN;
+ else if (it_opc & (IT_GETATTR | IT_LOOKUP))
+ return &RQF_LDLM_INTENT_GETATTR;
+ else if (it_opc & IT_GETXATTR)
+ return &RQF_LDLM_INTENT_GETXATTR;
+ else if (it_opc & (IT_GLIMPSE | IT_BRW))
+ return &RQF_LDLM_INTENT;
+ else
+ return NULL;
+}
+
+static int ost_tbf_id_cli_set(struct ptlrpc_request *req,
+ struct tbf_id *id)
+{
+ struct ost_body *body;
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
+ if (body != NULL) {
+ id->ti_uid = body->oa.o_uid;
+ id->ti_gid = body->oa.o_gid;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static void unpack_ugid_from_mdt_body(struct ptlrpc_request *req,
+ struct tbf_id *id)
+{
+ struct mdt_body *b = req_capsule_client_get(&req->rq_pill,
+ &RMF_MDT_BODY);
+ LASSERT(b != NULL);
+
+ /* TODO: nodemaping feature converts {ug}id from individual
+ * clients to the actual ones of the file system. Some work
+ * may be needed to fix this. */
+ id->ti_uid = b->mbo_uid;
+ id->ti_gid = b->mbo_gid;
+}
+
+static void unpack_ugid_from_mdt_rec_reint(struct ptlrpc_request *req,
+ struct tbf_id *id)
+{
+ struct mdt_rec_reint *rec;
+
+ rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
+ LASSERT(rec != NULL);
+
+ /* use the fs{ug}id as {ug}id of the process */
+ id->ti_uid = rec->rr_fsuid;
+ id->ti_gid = rec->rr_fsgid;
+}
+
+static int mdt_tbf_id_cli_set(struct ptlrpc_request *req,
+ struct tbf_id *id)
+{
+ u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
+ int rc = 0;
+
+ switch (opc) {
+ case MDS_GETATTR:
+ case MDS_GETATTR_NAME:
+ case MDS_GET_ROOT:
+ case MDS_READPAGE:
+ case MDS_SYNC:
+ case MDS_GETXATTR:
+ case MDS_HSM_STATE_GET ... MDS_SWAP_LAYOUTS:
+ unpack_ugid_from_mdt_body(req, id);
+ break;
+ case MDS_CLOSE:
+ case MDS_REINT:
+ unpack_ugid_from_mdt_rec_reint(req, id);
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+ return rc;
+}
+
+static int ldlm_tbf_id_cli_set(struct ptlrpc_request *req,
+ struct tbf_id *id)
+{
+ struct ldlm_intent *lit;
+ struct req_format *fmt;
+
+ if (req->rq_reqmsg->lm_bufcount <= DLM_INTENT_IT_OFF)
+ return -EINVAL;
+
+ req_capsule_extend(&req->rq_pill, &RQF_LDLM_INTENT_BASIC);
+ lit = req_capsule_client_get(&req->rq_pill, &RMF_LDLM_INTENT);
+ if (lit == NULL)
+ return -EINVAL;
+
+ fmt = intent_req_fmt(lit->opc);
+ if (fmt == NULL)
+ return -EINVAL;
+
+ req_capsule_extend(&req->rq_pill, fmt);
+
+ if (lit->opc & (IT_GETXATTR | IT_GETATTR | IT_LOOKUP))
+ unpack_ugid_from_mdt_body(req, id);
+ else if (lit->opc & (IT_OPEN | IT_OPEN | IT_GLIMPSE | IT_BRW))
+ unpack_ugid_from_mdt_rec_reint(req, id);
+ else
+ return -EINVAL;
+ return 0;
+}
+
+static int nrs_tbf_id_cli_set(struct ptlrpc_request *req, struct tbf_id *id,
+ enum nrs_tbf_flag ti_type)
+{
+ u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
+ struct req_format *fmt = req_fmt(opc);
+ bool fmt_unset = false;
+ int rc;
+
+ memset(id, 0, sizeof(struct tbf_id));
+ id->ti_type = ti_type;
+
+ if (fmt == NULL)
+ return -EINVAL;
+ req_capsule_init(&req->rq_pill, req, RCL_SERVER);
+ if (req->rq_pill.rc_fmt == NULL) {
+ req_capsule_set(&req->rq_pill, fmt);
+ fmt_unset = true;
+ }
+
+ if (opc < OST_LAST_OPC)
+ rc = ost_tbf_id_cli_set(req, id);
+ else if (opc >= MDS_FIRST_OPC && opc < MDS_LAST_OPC)
+ rc = mdt_tbf_id_cli_set(req, id);
+ else if (opc == LDLM_ENQUEUE)
+ rc = ldlm_tbf_id_cli_set(req, id);
+ else
+ rc = -EINVAL;
+
+ /* restore it to the initialized state */
+ if (fmt_unset)
+ req->rq_pill.rc_fmt = NULL;
+ return rc;
+}
+
+static inline void nrs_tbf_cli_gen_key(struct nrs_tbf_client *cli,
+ struct ptlrpc_request *req,
+ char *keystr, size_t keystr_sz)
+{
+ const char *jobid;
+ u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
+ struct tbf_id id;
+
+ nrs_tbf_id_cli_set(req, &id, NRS_TBF_FLAG_UID | NRS_TBF_FLAG_GID);
+ jobid = lustre_msg_get_jobid(req->rq_reqmsg);
+ if (jobid == NULL)
+ jobid = NRS_TBF_JOBID_NULL;
+
+ snprintf(keystr, keystr_sz, "%s_%s_%d_%u_%u", jobid,
+ libcfs_nid2str(req->rq_peer.nid), opc, id.ti_uid,
+ id.ti_gid);
+
+ if (cli) {
+ INIT_LIST_HEAD(&cli->tc_lru);
+ strlcpy(cli->tc_key, keystr, sizeof(cli->tc_key));
+ strlcpy(cli->tc_jobid, jobid, sizeof(cli->tc_jobid));
+ cli->tc_nid = req->rq_peer.nid;
+ cli->tc_opcode = opc;
+ cli->tc_id = id;
+ }
+}
+
+static struct nrs_tbf_client *
+nrs_tbf_cli_find(struct nrs_tbf_head *head, struct ptlrpc_request *req)
+{
+ struct nrs_tbf_client *cli;
+ struct cfs_hash *hs = head->th_cli_hash;
+ struct cfs_hash_bd bd;
+ char keystr[NRS_TBF_KEY_LEN];
+
+ nrs_tbf_cli_gen_key(NULL, req, keystr, sizeof(keystr));
+ cfs_hash_bd_get_and_lock(hs, (void *)keystr, &bd, 1);
+ cli = nrs_tbf_cli_hash_lookup(hs, &bd, keystr);
+ cfs_hash_bd_unlock(hs, &bd, 1);
+
+ return cli;
+}
+
+static struct nrs_tbf_client *
+nrs_tbf_cli_findadd(struct nrs_tbf_head *head,
+ struct nrs_tbf_client *cli)
+{
+ const char *key;
+ struct nrs_tbf_client *ret;
+ struct cfs_hash *hs = head->th_cli_hash;
+ struct cfs_hash_bd bd;
+
+ key = cli->tc_key;
+ cfs_hash_bd_get_and_lock(hs, (void *)key, &bd, 1);
+ ret = nrs_tbf_cli_hash_lookup(hs, &bd, key);
+ if (ret == NULL) {
+ cfs_hash_bd_add_locked(hs, &bd, &cli->tc_hnode);
+ ret = cli;
+ }
+ cfs_hash_bd_unlock(hs, &bd, 1);
+
+ return ret;
+}
+
+static void
+nrs_tbf_cli_put(struct nrs_tbf_head *head, struct nrs_tbf_client *cli)
+{
+ struct cfs_hash_bd bd;
+ struct cfs_hash *hs = head->th_cli_hash;
+ struct nrs_tbf_bucket *bkt;
+ int hw;
+ struct list_head zombies;
+
+ INIT_LIST_HEAD(&zombies);
+ cfs_hash_bd_get(hs, &cli->tc_key, &bd);
+ bkt = cfs_hash_bd_extra_get(hs, &bd);
+ if (!cfs_hash_bd_dec_and_lock(hs, &bd, &cli->tc_ref))
+ return;
+ LASSERT(list_empty(&cli->tc_lru));
+ list_add_tail(&cli->tc_lru, &bkt->ntb_lru);
+
+ /**
+ * Check and purge the LRU, there is at least one client in the LRU.
+ */
+ hw = tbf_jobid_cache_size >> (hs->hs_cur_bits - hs->hs_bkt_bits);
+ while (cfs_hash_bd_count_get(&bd) > hw) {
+ if (unlikely(list_empty(&bkt->ntb_lru)))
+ break;
+ cli = list_entry(bkt->ntb_lru.next,
+ struct nrs_tbf_client,
+ tc_lru);
+ LASSERT(atomic_read(&cli->tc_ref) == 0);
+ cfs_hash_bd_del_locked(hs, &bd, &cli->tc_hnode);
+ list_move(&cli->tc_lru, &zombies);
+ }
+ cfs_hash_bd_unlock(head->th_cli_hash, &bd, 1);
+
+ while (!list_empty(&zombies)) {
+ cli = container_of0(zombies.next,
+ struct nrs_tbf_client, tc_lru);
+ list_del_init(&cli->tc_lru);
+ nrs_tbf_cli_fini(cli);
+ }
+}
+
+static void
+nrs_tbf_generic_cli_init(struct nrs_tbf_client *cli,
+ struct ptlrpc_request *req)
+{
+ char keystr[NRS_TBF_KEY_LEN];
+
+ nrs_tbf_cli_gen_key(cli, req, keystr, sizeof(keystr));
+}
+
+static void
+nrs_tbf_id_list_free(struct list_head *uid_list)
+{
+ struct nrs_tbf_id *nti_id, *n;
+
+ list_for_each_entry_safe(nti_id, n, uid_list, nti_linkage) {
+ list_del_init(&nti_id->nti_linkage);
+ OBD_FREE_PTR(nti_id);
+ }
+}
+
+static void
+nrs_tbf_expression_free(struct nrs_tbf_expression *expr)
+{
+ LASSERT(expr->te_field >= NRS_TBF_FIELD_NID &&
+ expr->te_field < NRS_TBF_FIELD_MAX);
+ switch (expr->te_field) {
+ case NRS_TBF_FIELD_NID:
+ cfs_free_nidlist(&expr->te_cond);
+ break;
+ case NRS_TBF_FIELD_JOBID:
+ nrs_tbf_jobid_list_free(&expr->te_cond);
+ break;
+ case NRS_TBF_FIELD_OPCODE:
+ CFS_FREE_BITMAP(expr->te_opcodes);
+ break;
+ case NRS_TBF_FIELD_UID:
+ case NRS_TBF_FIELD_GID:
+ nrs_tbf_id_list_free(&expr->te_cond);
+ break;
+ default:
+ LBUG();
+ }
+ OBD_FREE_PTR(expr);
+}
+
+static void
+nrs_tbf_conjunction_free(struct nrs_tbf_conjunction *conjunction)
+{
+ struct nrs_tbf_expression *expression;
+ struct nrs_tbf_expression *n;
+
+ LASSERT(list_empty(&conjunction->tc_linkage));
+ list_for_each_entry_safe(expression, n,
+ &conjunction->tc_expressions,
+ te_linkage) {
+ list_del_init(&expression->te_linkage);
+ nrs_tbf_expression_free(expression);
+ }
+ OBD_FREE_PTR(conjunction);
+}
+
+static void
+nrs_tbf_conds_free(struct list_head *cond_list)
+{
+ struct nrs_tbf_conjunction *conjunction;
+ struct nrs_tbf_conjunction *n;
+
+ list_for_each_entry_safe(conjunction, n, cond_list, tc_linkage) {
+ list_del_init(&conjunction->tc_linkage);
+ nrs_tbf_conjunction_free(conjunction);
+ }
+}
+
+static void
+nrs_tbf_generic_cmd_fini(struct nrs_tbf_cmd *cmd)
+{
+ if (!list_empty(&cmd->u.tc_start.ts_conds))
+ nrs_tbf_conds_free(&cmd->u.tc_start.ts_conds);
+ if (cmd->u.tc_start.ts_conds_str)
+ OBD_FREE(cmd->u.tc_start.ts_conds_str,
+ strlen(cmd->u.tc_start.ts_conds_str) + 1);
+}
+
+#define NRS_TBF_DISJUNCTION_DELIM (',')
+#define NRS_TBF_CONJUNCTION_DELIM ('&')
+#define NRS_TBF_EXPRESSION_DELIM ('=')
+
+static inline bool
+nrs_tbf_check_field(struct cfs_lstr *field, char *str)
+{
+ int len = strlen(str);
+
+ return (field->ls_len == len &&
+ strncmp(field->ls_str, str, len) == 0);
+}
+
+static int
+nrs_tbf_opcode_list_parse(char *str, int len, struct cfs_bitmap **bitmaptr);
+static int
+nrs_tbf_id_list_parse(char *str, int len, struct list_head *id_list,
+ enum nrs_tbf_flag tif);
+
+static int
+nrs_tbf_expression_parse(struct cfs_lstr *src, struct list_head *cond_list)
+{
+ struct nrs_tbf_expression *expr;
+ struct cfs_lstr field;
+ int rc = 0;
+
+ OBD_ALLOC_PTR(expr);
+ if (expr == NULL)
+ return -ENOMEM;
+
+ rc = cfs_gettok(src, NRS_TBF_EXPRESSION_DELIM, &field);
+ if (rc == 0 || src->ls_len <= 2 || src->ls_str[0] != '{' ||
+ src->ls_str[src->ls_len - 1] != '}')
+ GOTO(out, rc = -EINVAL);
+
+ /* Skip '{' and '}' */
+ src->ls_str++;
+ src->ls_len -= 2;
+
+ if (nrs_tbf_check_field(&field, "nid")) {
+ if (cfs_parse_nidlist(src->ls_str,
+ src->ls_len,
+ &expr->te_cond) <= 0)
+ GOTO(out, rc = -EINVAL);
+ expr->te_field = NRS_TBF_FIELD_NID;
+ } else if (nrs_tbf_check_field(&field, "jobid")) {
+ if (nrs_tbf_jobid_list_parse(src->ls_str,
+ src->ls_len,
+ &expr->te_cond) < 0)
+ GOTO(out, rc = -EINVAL);
+ expr->te_field = NRS_TBF_FIELD_JOBID;
+ } else if (nrs_tbf_check_field(&field, "opcode")) {
+ if (nrs_tbf_opcode_list_parse(src->ls_str,
+ src->ls_len,
+ &expr->te_opcodes) < 0)
+ GOTO(out, rc = -EINVAL);
+ expr->te_field = NRS_TBF_FIELD_OPCODE;
+ } else if (nrs_tbf_check_field(&field, "uid")) {
+ if (nrs_tbf_id_list_parse(src->ls_str,
+ src->ls_len,
+ &expr->te_cond,
+ NRS_TBF_FLAG_UID) < 0)
+ GOTO(out, rc = -EINVAL);
+ expr->te_field = NRS_TBF_FIELD_UID;
+ } else if (nrs_tbf_check_field(&field, "gid")) {
+ if (nrs_tbf_id_list_parse(src->ls_str,
+ src->ls_len,
+ &expr->te_cond,
+ NRS_TBF_FLAG_GID) < 0)
+ GOTO(out, rc = -EINVAL);
+ expr->te_field = NRS_TBF_FIELD_GID;
+ } else {
+ GOTO(out, rc = -EINVAL);
+ }
+
+ list_add_tail(&expr->te_linkage, cond_list);
+ return 0;
+out:
+ OBD_FREE_PTR(expr);
+ return rc;
+}
+
+static int
+nrs_tbf_conjunction_parse(struct cfs_lstr *src, struct list_head *cond_list)
+{
+ struct nrs_tbf_conjunction *conjunction;
+ struct cfs_lstr expr;
+ int rc = 0;
+
+ OBD_ALLOC_PTR(conjunction);
+ if (conjunction == NULL)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&conjunction->tc_expressions);
+ list_add_tail(&conjunction->tc_linkage, cond_list);
+
+ while (src->ls_str) {
+ rc = cfs_gettok(src, NRS_TBF_CONJUNCTION_DELIM, &expr);
+ if (rc == 0) {
+ rc = -EINVAL;
+ break;
+ }
+ rc = nrs_tbf_expression_parse(&expr,
+ &conjunction->tc_expressions);
+ if (rc)
+ break;
+ }
+ return rc;
+}
+
+static int
+nrs_tbf_conds_parse(char *str, int len, struct list_head *cond_list)
+{
+ struct cfs_lstr src;
+ struct cfs_lstr res;
+ int rc = 0;
+
+ src.ls_str = str;
+ src.ls_len = len;
+ INIT_LIST_HEAD(cond_list);
+ while (src.ls_str) {
+ rc = cfs_gettok(&src, NRS_TBF_DISJUNCTION_DELIM, &res);
+ if (rc == 0) {
+ rc = -EINVAL;
+ break;
+ }
+ rc = nrs_tbf_conjunction_parse(&res, cond_list);
+ if (rc)
+ break;
+ }
+ return rc;
+}
+
+static int
+nrs_tbf_generic_parse(struct nrs_tbf_cmd *cmd, const char *id)
+{
+ int rc;
+
+ OBD_ALLOC(cmd->u.tc_start.ts_conds_str, strlen(id) + 1);
+ if (cmd->u.tc_start.ts_conds_str == NULL)
+ return -ENOMEM;
+
+ memcpy(cmd->u.tc_start.ts_conds_str, id, strlen(id));
+
+ /* Parse hybird NID and JOBID conditions */
+ rc = nrs_tbf_conds_parse(cmd->u.tc_start.ts_conds_str,
+ strlen(cmd->u.tc_start.ts_conds_str),
+ &cmd->u.tc_start.ts_conds);
+ if (rc)
+ nrs_tbf_generic_cmd_fini(cmd);
+
+ return rc;
+}
+
+static int
+nrs_tbf_id_list_match(struct list_head *id_list, struct tbf_id id);
+
+static int
+nrs_tbf_expression_match(struct nrs_tbf_expression *expr,
+ struct nrs_tbf_rule *rule,
+ struct nrs_tbf_client *cli)
+{
+ switch (expr->te_field) {
+ case NRS_TBF_FIELD_NID:
+ return cfs_match_nid(cli->tc_nid, &expr->te_cond);
+ case NRS_TBF_FIELD_JOBID:
+ return nrs_tbf_jobid_list_match(&expr->te_cond, cli->tc_jobid);
+ case NRS_TBF_FIELD_OPCODE:
+ return cfs_bitmap_check(expr->te_opcodes, cli->tc_opcode);
+ case NRS_TBF_FIELD_UID:
+ case NRS_TBF_FIELD_GID:
+ return nrs_tbf_id_list_match(&expr->te_cond, cli->tc_id);
+ default:
+ return 0;
+ }
+}
+
+static int
+nrs_tbf_conjunction_match(struct nrs_tbf_conjunction *conjunction,
+ struct nrs_tbf_rule *rule,
+ struct nrs_tbf_client *cli)
+{
+ struct nrs_tbf_expression *expr;
+ int matched;
+
+ list_for_each_entry(expr, &conjunction->tc_expressions, te_linkage) {
+ matched = nrs_tbf_expression_match(expr, rule, cli);
+ if (!matched)
+ return 0;
+ }
+
+ return 1;
+}
+
+static int
+nrs_tbf_cond_match(struct nrs_tbf_rule *rule, struct nrs_tbf_client *cli)
+{
+ struct nrs_tbf_conjunction *conjunction;
+ int matched;
+
+ list_for_each_entry(conjunction, &rule->tr_conds, tc_linkage) {
+ matched = nrs_tbf_conjunction_match(conjunction, rule, cli);
+ if (matched)
+ return 1;
+ }
+
+ return 0;
+}
+
+static void
+nrs_tbf_generic_rule_fini(struct nrs_tbf_rule *rule)
+{
+ if (!list_empty(&rule->tr_conds))
+ nrs_tbf_conds_free(&rule->tr_conds);
+ LASSERT(rule->tr_conds_str != NULL);
+ OBD_FREE(rule->tr_conds_str, strlen(rule->tr_conds_str) + 1);
+}
+
+static int
+nrs_tbf_rule_init(struct ptlrpc_nrs_policy *policy,
+ struct nrs_tbf_rule *rule, struct nrs_tbf_cmd *start)
+{
+ int rc = 0;
+
+ LASSERT(start->u.tc_start.ts_conds_str);
+ OBD_ALLOC(rule->tr_conds_str,
+ strlen(start->u.tc_start.ts_conds_str) + 1);
+ if (rule->tr_conds_str == NULL)
+ return -ENOMEM;
+
+ memcpy(rule->tr_conds_str,
+ start->u.tc_start.ts_conds_str,
+ strlen(start->u.tc_start.ts_conds_str));
+
+ INIT_LIST_HEAD(&rule->tr_conds);
+ if (!list_empty(&start->u.tc_start.ts_conds)) {
+ rc = nrs_tbf_conds_parse(rule->tr_conds_str,
+ strlen(rule->tr_conds_str),
+ &rule->tr_conds);
+ }
+ if (rc)
+ nrs_tbf_generic_rule_fini(rule);
+
+ return rc;
+}
+
+static int
+nrs_tbf_generic_rule_dump(struct nrs_tbf_rule *rule, struct seq_file *m)
+{
+ seq_printf(m, "%s %s %llu, ref %d\n", rule->tr_name,
+ rule->tr_conds_str, rule->tr_rpc_rate,
+ atomic_read(&rule->tr_ref) - 1);
+ return 0;
+}
+
+static int
+nrs_tbf_generic_rule_match(struct nrs_tbf_rule *rule,
+ struct nrs_tbf_client *cli)
+{
+ return nrs_tbf_cond_match(rule, cli);
+}
+
+static struct nrs_tbf_ops nrs_tbf_generic_ops = {
+ .o_name = NRS_TBF_TYPE_GENERIC,
+ .o_startup = nrs_tbf_startup,
+ .o_cli_find = nrs_tbf_cli_find,
+ .o_cli_findadd = nrs_tbf_cli_findadd,
+ .o_cli_put = nrs_tbf_cli_put,
+ .o_cli_init = nrs_tbf_generic_cli_init,
+ .o_rule_init = nrs_tbf_rule_init,
+ .o_rule_dump = nrs_tbf_generic_rule_dump,
+ .o_rule_match = nrs_tbf_generic_rule_match,
+ .o_rule_fini = nrs_tbf_generic_rule_fini,
+};
+
static void nrs_tbf_opcode_rule_fini(struct nrs_tbf_rule *rule)
{
if (rule->tr_opcodes != NULL)
struct nrs_tbf_client *cli = hlist_entry(hnode,
struct nrs_tbf_client,
tc_hnode);
-
- return &cli->tc_opcode;
-}
-
-static void *nrs_tbf_opcode_hop_object(struct hlist_node *hnode)
-{
- return hlist_entry(hnode, struct nrs_tbf_client, tc_hnode);
+
+ return &cli->tc_opcode;
}
static void nrs_tbf_opcode_hop_get(struct cfs_hash *hs,
.hs_hash = nrs_tbf_opcode_hop_hash,
.hs_keycmp = nrs_tbf_opcode_hop_keycmp,
.hs_key = nrs_tbf_opcode_hop_key,
- .hs_object = nrs_tbf_opcode_hop_object,
+ .hs_object = nrs_tbf_hop_object,
.hs_get = nrs_tbf_opcode_hop_get,
.hs_put = nrs_tbf_opcode_hop_put,
.hs_put_locked = nrs_tbf_opcode_hop_put,
}
static int
-nrs_tbf_opcode_list_parse(char *str, int len, struct cfs_bitmap *opcodes)
+nrs_tbf_opcode_list_parse(char *str, int len, struct cfs_bitmap **bitmaptr)
{
+ struct cfs_bitmap *opcodes;
struct cfs_lstr src;
struct cfs_lstr res;
int rc = 0;
-
ENTRY;
+ opcodes = CFS_ALLOCATE_BITMAP(LUSTRE_MAX_OPCODES);
+ if (opcodes == NULL)
+ return -ENOMEM;
+
src.ls_str = str;
src.ls_len = len;
while (src.ls_str) {
break;
}
+ if (rc == 0)
+ *bitmaptr = opcodes;
+ else
+ CFS_FREE_BITMAP(opcodes);
+
RETURN(rc);
}
struct cfs_lstr src;
int rc;
- cmd->u.tc_start.ts_opcodes = CFS_ALLOCATE_BITMAP(LUSTRE_MAX_OPCODES);
- if (cmd->u.tc_start.ts_opcodes == NULL)
- return -ENOMEM;
-
src.ls_str = id;
src.ls_len = strlen(id);
rc = nrs_tbf_check_id_value(&src, "opcode");
if (rc)
- GOTO(out, rc);
+ return rc;
OBD_ALLOC(cmd->u.tc_start.ts_opcodes_str, src.ls_len + 1);
if (cmd->u.tc_start.ts_opcodes_str == NULL)
- GOTO(out, rc = -ENOMEM);
+ return -ENOMEM;
memcpy(cmd->u.tc_start.ts_opcodes_str, src.ls_str, src.ls_len);
/* parse opcode list */
rc = nrs_tbf_opcode_list_parse(cmd->u.tc_start.ts_opcodes_str,
strlen(cmd->u.tc_start.ts_opcodes_str),
- cmd->u.tc_start.ts_opcodes);
-out:
- if (rc != 0)
+ &cmd->u.tc_start.ts_opcodes);
+ if (rc)
nrs_tbf_opcode_cmd_fini(cmd);
return rc;
struct nrs_tbf_rule *rule,
struct nrs_tbf_cmd *start)
{
+ int rc = 0;
+
LASSERT(start->u.tc_start.ts_opcodes_str != NULL);
OBD_ALLOC(rule->tr_opcodes_str,
strlen(start->u.tc_start.ts_opcodes_str) + 1);
strncpy(rule->tr_opcodes_str, start->u.tc_start.ts_opcodes_str,
strlen(start->u.tc_start.ts_opcodes_str) + 1);
+ /* Default rule '*' */
if (start->u.tc_start.ts_opcodes == NULL)
return 0;
- rule->tr_opcodes = CFS_ALLOCATE_BITMAP(LUSTRE_MAX_OPCODES);
- if (rule->tr_opcodes == NULL) {
+ rc = nrs_tbf_opcode_list_parse(rule->tr_opcodes_str,
+ strlen(rule->tr_opcodes_str),
+ &rule->tr_opcodes);
+ if (rc)
OBD_FREE(rule->tr_opcodes_str,
strlen(start->u.tc_start.ts_opcodes_str) + 1);
- return -ENOMEM;
- }
- cfs_bitmap_copy(rule->tr_opcodes, start->u.tc_start.ts_opcodes);
-
- return 0;
+ return rc;
}
static int
.o_rule_fini = nrs_tbf_opcode_rule_fini,
};
+static unsigned nrs_tbf_id_hop_hash(struct cfs_hash *hs, const void *key,
+ unsigned mask)
+{
+ return cfs_hash_djb2_hash(key, sizeof(struct tbf_id), mask);
+}
+
+static int nrs_tbf_id_hop_keycmp(const void *key, struct hlist_node *hnode)
+{
+ const struct tbf_id *opc = key;
+ enum nrs_tbf_flag ntf;
+ struct nrs_tbf_client *cli = hlist_entry(hnode, struct nrs_tbf_client,
+ tc_hnode);
+ ntf = opc->ti_type & cli->tc_id.ti_type;
+ if ((ntf & NRS_TBF_FLAG_UID) && opc->ti_uid != cli->tc_id.ti_uid)
+ return 0;
+
+ if ((ntf & NRS_TBF_FLAG_GID) && opc->ti_gid != cli->tc_id.ti_gid)
+ return 0;
+
+ return 1;
+}
+
+static void *nrs_tbf_id_hop_key(struct hlist_node *hnode)
+{
+ struct nrs_tbf_client *cli = hlist_entry(hnode,
+ struct nrs_tbf_client,
+ tc_hnode);
+ return &cli->tc_id;
+}
+
+static void nrs_tbf_id_hop_get(struct cfs_hash *hs, struct hlist_node *hnode)
+{
+ struct nrs_tbf_client *cli = hlist_entry(hnode,
+ struct nrs_tbf_client,
+ tc_hnode);
+
+ atomic_inc(&cli->tc_ref);
+}
+
+static void nrs_tbf_id_hop_put(struct cfs_hash *hs, struct hlist_node *hnode)
+{
+ struct nrs_tbf_client *cli = hlist_entry(hnode,
+ struct nrs_tbf_client,
+ tc_hnode);
+
+ atomic_dec(&cli->tc_ref);
+}
+
+static void
+nrs_tbf_id_hop_exit(struct cfs_hash *hs, struct hlist_node *hnode)
+
+{
+ struct nrs_tbf_client *cli = hlist_entry(hnode,
+ struct nrs_tbf_client,
+ tc_hnode);
+
+ LASSERT(atomic_read(&cli->tc_ref) == 0);
+ nrs_tbf_cli_fini(cli);
+}
+
+static struct cfs_hash_ops nrs_tbf_id_hash_ops = {
+ .hs_hash = nrs_tbf_id_hop_hash,
+ .hs_keycmp = nrs_tbf_id_hop_keycmp,
+ .hs_key = nrs_tbf_id_hop_key,
+ .hs_object = nrs_tbf_hop_object,
+ .hs_get = nrs_tbf_id_hop_get,
+ .hs_put = nrs_tbf_id_hop_put,
+ .hs_put_locked = nrs_tbf_id_hop_put,
+ .hs_exit = nrs_tbf_id_hop_exit,
+};
+
+static int
+nrs_tbf_id_startup(struct ptlrpc_nrs_policy *policy,
+ struct nrs_tbf_head *head)
+{
+ struct nrs_tbf_cmd start;
+ int rc;
+
+ head->th_cli_hash = cfs_hash_create("nrs_tbf_id_hash",
+ NRS_TBF_NID_BITS,
+ NRS_TBF_NID_BITS,
+ NRS_TBF_NID_BKT_BITS, 0,
+ CFS_HASH_MIN_THETA,
+ CFS_HASH_MAX_THETA,
+ &nrs_tbf_id_hash_ops,
+ CFS_HASH_RW_BKTLOCK);
+ if (head->th_cli_hash == NULL)
+ return -ENOMEM;
+
+ memset(&start, 0, sizeof(start));
+ start.u.tc_start.ts_ids_str = "*";
+ start.u.tc_start.ts_rpc_rate = tbf_rate;
+ start.u.tc_start.ts_rule_flags = NTRS_DEFAULT;
+ start.tc_name = NRS_TBF_DEFAULT_RULE;
+ INIT_LIST_HEAD(&start.u.tc_start.ts_ids);
+ rc = nrs_tbf_rule_start(policy, head, &start);
+ if (rc) {
+ cfs_hash_putref(head->th_cli_hash);
+ head->th_cli_hash = NULL;
+ }
+
+ return rc;
+}
+
+static struct nrs_tbf_client *
+nrs_tbf_id_cli_find(struct nrs_tbf_head *head,
+ struct ptlrpc_request *req)
+{
+ struct tbf_id id;
+
+ LASSERT(head->th_type_flag == NRS_TBF_FLAG_UID ||
+ head->th_type_flag == NRS_TBF_FLAG_GID);
+
+ nrs_tbf_id_cli_set(req, &id, head->th_type_flag);
+ return cfs_hash_lookup(head->th_cli_hash, &id);
+}
+
+static struct nrs_tbf_client *
+nrs_tbf_id_cli_findadd(struct nrs_tbf_head *head,
+ struct nrs_tbf_client *cli)
+{
+ return cfs_hash_findadd_unique(head->th_cli_hash, &cli->tc_id,
+ &cli->tc_hnode);
+}
+
+static void
+nrs_tbf_uid_cli_init(struct nrs_tbf_client *cli,
+ struct ptlrpc_request *req)
+{
+ nrs_tbf_id_cli_set(req, &cli->tc_id, NRS_TBF_FLAG_UID);
+}
+
+static void
+nrs_tbf_gid_cli_init(struct nrs_tbf_client *cli,
+ struct ptlrpc_request *req)
+{
+ nrs_tbf_id_cli_set(req, &cli->tc_id, NRS_TBF_FLAG_GID);
+}
+
+static int
+nrs_tbf_id_list_match(struct list_head *id_list, struct tbf_id id)
+{
+ struct nrs_tbf_id *nti_id;
+ enum nrs_tbf_flag flag;
+
+ list_for_each_entry(nti_id, id_list, nti_linkage) {
+ flag = id.ti_type & nti_id->nti_id.ti_type;
+ if (!flag)
+ continue;
+
+ if ((flag & NRS_TBF_FLAG_UID) &&
+ (id.ti_uid != nti_id->nti_id.ti_uid))
+ continue;
+
+ if ((flag & NRS_TBF_FLAG_GID) &&
+ (id.ti_gid != nti_id->nti_id.ti_gid))
+ continue;
+
+ return 1;
+ }
+ return 0;
+}
+
+static int
+nrs_tbf_id_rule_match(struct nrs_tbf_rule *rule,
+ struct nrs_tbf_client *cli)
+{
+ return nrs_tbf_id_list_match(&rule->tr_ids, cli->tc_id);
+}
+
+static void nrs_tbf_id_cmd_fini(struct nrs_tbf_cmd *cmd)
+{
+ nrs_tbf_id_list_free(&cmd->u.tc_start.ts_ids);
+
+ if (cmd->u.tc_start.ts_ids_str)
+ OBD_FREE(cmd->u.tc_start.ts_ids_str,
+ strlen(cmd->u.tc_start.ts_ids_str) + 1);
+}
+
+static int
+nrs_tbf_id_list_parse(char *str, int len, struct list_head *id_list,
+ enum nrs_tbf_flag tif)
+{
+ struct cfs_lstr src;
+ struct cfs_lstr res;
+ int rc = 0;
+ struct tbf_id id = { 0 };
+ ENTRY;
+
+ if (tif != NRS_TBF_FLAG_UID && tif != NRS_TBF_FLAG_GID)
+ RETURN(-EINVAL);
+
+ src.ls_str = str;
+ src.ls_len = len;
+ INIT_LIST_HEAD(id_list);
+ while (src.ls_str) {
+ struct nrs_tbf_id *nti_id;
+
+ if (cfs_gettok(&src, ' ', &res) == 0)
+ GOTO(out, rc = -EINVAL);
+
+ id.ti_type = tif;
+ if (tif == NRS_TBF_FLAG_UID) {
+ if (!cfs_str2num_check(res.ls_str, res.ls_len,
+ &id.ti_uid, 0, (u32)~0U))
+ GOTO(out, rc = -EINVAL);
+ } else {
+ if (!cfs_str2num_check(res.ls_str, res.ls_len,
+ &id.ti_gid, 0, (u32)~0U))
+ GOTO(out, rc = -EINVAL);
+ }
+
+ OBD_ALLOC_PTR(nti_id);
+ if (nti_id == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ nti_id->nti_id = id;
+ list_add_tail(&nti_id->nti_linkage, id_list);
+ }
+out:
+ if (rc)
+ nrs_tbf_id_list_free(id_list);
+ RETURN(rc);
+}
+
+static int nrs_tbf_ug_id_parse(struct nrs_tbf_cmd *cmd, char *id)
+{
+ struct cfs_lstr src;
+ int rc;
+ enum nrs_tbf_flag tif;
+
+ tif = cmd->u.tc_start.ts_valid_type;
+
+ src.ls_str = id;
+ src.ls_len = strlen(id);
+
+ rc = nrs_tbf_check_id_value(&src,
+ tif == NRS_TBF_FLAG_UID ? "uid" : "gid");
+ if (rc)
+ return rc;
+
+ OBD_ALLOC(cmd->u.tc_start.ts_ids_str, src.ls_len + 1);
+ if (cmd->u.tc_start.ts_ids_str == NULL)
+ return -ENOMEM;
+
+ strlcpy(cmd->u.tc_start.ts_ids_str, src.ls_str, src.ls_len + 1);
+
+ rc = nrs_tbf_id_list_parse(cmd->u.tc_start.ts_ids_str,
+ strlen(cmd->u.tc_start.ts_ids_str),
+ &cmd->u.tc_start.ts_ids, tif);
+ if (rc)
+ nrs_tbf_id_cmd_fini(cmd);
+
+ return rc;
+}
+
+static int
+nrs_tbf_id_rule_init(struct ptlrpc_nrs_policy *policy,
+ struct nrs_tbf_rule *rule,
+ struct nrs_tbf_cmd *start)
+{
+ struct nrs_tbf_head *head = rule->tr_head;
+ int rc = 0;
+ enum nrs_tbf_flag tif = head->th_type_flag;
+ int ids_len = strlen(start->u.tc_start.ts_ids_str) + 1;
+
+ LASSERT(start->u.tc_start.ts_ids_str);
+ INIT_LIST_HEAD(&rule->tr_ids);
+
+ OBD_ALLOC(rule->tr_ids_str, ids_len);
+ if (rule->tr_ids_str == NULL)
+ return -ENOMEM;
+
+ strlcpy(rule->tr_ids_str, start->u.tc_start.ts_ids_str,
+ ids_len);
+
+ if (!list_empty(&start->u.tc_start.ts_ids)) {
+ rc = nrs_tbf_id_list_parse(rule->tr_ids_str,
+ strlen(rule->tr_ids_str),
+ &rule->tr_ids, tif);
+ if (rc)
+ CERROR("%ss {%s} illegal\n",
+ tif == NRS_TBF_FLAG_UID ? "uid" : "gid",
+ rule->tr_ids_str);
+ }
+ if (rc) {
+ OBD_FREE(rule->tr_ids_str, ids_len);
+ rule->tr_ids_str = NULL;
+ }
+ return rc;
+}
+
+static int
+nrs_tbf_id_rule_dump(struct nrs_tbf_rule *rule, struct seq_file *m)
+{
+ seq_printf(m, "%s {%s} %llu, ref %d\n", rule->tr_name,
+ rule->tr_ids_str, rule->tr_rpc_rate,
+ atomic_read(&rule->tr_ref) - 1);
+ return 0;
+}
+
+static void nrs_tbf_id_rule_fini(struct nrs_tbf_rule *rule)
+{
+ nrs_tbf_id_list_free(&rule->tr_ids);
+ if (rule->tr_ids_str != NULL)
+ OBD_FREE(rule->tr_ids_str, strlen(rule->tr_ids_str) + 1);
+}
+
+struct nrs_tbf_ops nrs_tbf_uid_ops = {
+ .o_name = NRS_TBF_TYPE_UID,
+ .o_startup = nrs_tbf_id_startup,
+ .o_cli_find = nrs_tbf_id_cli_find,
+ .o_cli_findadd = nrs_tbf_id_cli_findadd,
+ .o_cli_put = nrs_tbf_nid_cli_put,
+ .o_cli_init = nrs_tbf_uid_cli_init,
+ .o_rule_init = nrs_tbf_id_rule_init,
+ .o_rule_dump = nrs_tbf_id_rule_dump,
+ .o_rule_match = nrs_tbf_id_rule_match,
+ .o_rule_fini = nrs_tbf_id_rule_fini,
+};
+
+struct nrs_tbf_ops nrs_tbf_gid_ops = {
+ .o_name = NRS_TBF_TYPE_GID,
+ .o_startup = nrs_tbf_id_startup,
+ .o_cli_find = nrs_tbf_id_cli_find,
+ .o_cli_findadd = nrs_tbf_id_cli_findadd,
+ .o_cli_put = nrs_tbf_nid_cli_put,
+ .o_cli_init = nrs_tbf_gid_cli_init,
+ .o_rule_init = nrs_tbf_id_rule_init,
+ .o_rule_dump = nrs_tbf_id_rule_dump,
+ .o_rule_match = nrs_tbf_id_rule_match,
+ .o_rule_fini = nrs_tbf_id_rule_fini,
+};
+
static struct nrs_tbf_type nrs_tbf_types[] = {
{
.ntt_name = NRS_TBF_TYPE_JOBID,
.ntt_flag = NRS_TBF_FLAG_OPCODE,
.ntt_ops = &nrs_tbf_opcode_ops,
},
+ {
+ .ntt_name = NRS_TBF_TYPE_GENERIC,
+ .ntt_flag = NRS_TBF_FLAG_GENERIC,
+ .ntt_ops = &nrs_tbf_generic_ops,
+ },
+ {
+ .ntt_name = NRS_TBF_TYPE_UID,
+ .ntt_flag = NRS_TBF_FLAG_UID,
+ .ntt_ops = &nrs_tbf_uid_ops,
+ },
+ {
+ .ntt_name = NRS_TBF_TYPE_GID,
+ .ntt_flag = NRS_TBF_FLAG_GID,
+ .ntt_ops = &nrs_tbf_gid_ops,
+ },
};
/**
struct nrs_tbf_head *head;
struct nrs_tbf_ops *ops;
__u32 type;
+ char *name;
int found = 0;
int i;
int rc = 0;
- if (arg == NULL || strlen(arg) > NRS_TBF_TYPE_MAX_LEN)
+ if (arg == NULL)
+ name = NRS_TBF_TYPE_GENERIC;
+ else if (strlen(arg) < NRS_TBF_TYPE_MAX_LEN)
+ name = arg;
+ else
GOTO(out, rc = -EINVAL);
for (i = 0; i < ARRAY_SIZE(nrs_tbf_types); i++) {
- if (strcmp(arg, nrs_tbf_types[i].ntt_name) == 0) {
+ if (strcmp(name, nrs_tbf_types[i].ntt_name) == 0) {
ops = nrs_tbf_types[i].ntt_ops;
type = nrs_tbf_types[i].ntt_flag;
found = 1;
if (head == NULL)
GOTO(out, rc = -ENOMEM);
- memcpy(head->th_type, arg, strlen(arg));
- head->th_type[strlen(arg)] = '\0';
+ memcpy(head->th_type, name, strlen(name));
+ head->th_type[strlen(name)] = '\0';
head->th_ops = ops;
head->th_type_flag = type;
cli->tc_rule->tr_flags & NTRS_STOPPING) {
struct nrs_tbf_rule *rule;
+ CDEBUG(D_RPCTRACE,
+ "TBF class@%p rate %llu sequence %d, "
+ "rule flags %d, head sequence %d\n",
+ cli, cli->tc_rpc_rate,
+ cli->tc_rule_sequence,
+ cli->tc_rule->tr_flags,
+ atomic_read(&head->th_rule_sequence));
rule = nrs_tbf_rule_match(head, cli);
- if (rule != cli->tc_rule)
+ if (rule != cli->tc_rule) {
nrs_tbf_cli_reset(head, rule, cli);
- else
+ } else {
+ if (cli->tc_rule_generation != rule->tr_generation)
+ nrs_tbf_cli_reset_value(head, cli);
nrs_tbf_rule_put(rule);
+ }
} else if (cli->tc_rule_generation !=
cli->tc_rule->tr_generation) {
nrs_tbf_cli_reset_value(head, cli);
struct ptlrpc_nrs_request,
nr_u.tbf.tr_list);
} else {
+ struct nrs_tbf_rule *rule = cli->tc_rule;
__u64 now = ktime_to_ns(ktime_get());
__u64 passed;
__u64 ntoken;
__u64 deadline;
+ __u64 old_resid = 0;
deadline = cli->tc_check_time +
cli->tc_nsecs;
passed = now - cli->tc_check_time;
ntoken = passed * cli->tc_rpc_rate;
do_div(ntoken, NSEC_PER_SEC);
+
ntoken += cli->tc_ntoken;
- if (ntoken > cli->tc_depth)
+ if (rule->tr_flags & NTRS_REALTIME) {
+ LASSERT(cli->tc_nsecs_resid < cli->tc_nsecs);
+ old_resid = cli->tc_nsecs_resid;
+ cli->tc_nsecs_resid += passed % cli->tc_nsecs;
+ if (cli->tc_nsecs_resid > cli->tc_nsecs) {
+ ntoken++;
+ cli->tc_nsecs_resid -= cli->tc_nsecs;
+ }
+ } else if (ntoken > cli->tc_depth)
ntoken = cli->tc_depth;
+
if (ntoken > 0) {
struct ptlrpc_request *req;
nrq = list_entry(cli->tc_list.next,
&cli->tc_node);
cli->tc_in_heap = false;
} else {
+ if (!(rule->tr_flags & NTRS_REALTIME))
+ cli->tc_deadline = now + cli->tc_nsecs;
cfs_binheap_relocate(head->th_binheap,
&cli->tc_node);
}
CDEBUG(D_RPCTRACE,
- "NRS start %s request from %s, "
- "seq: %llu\n",
- policy->pol_desc->pd_name,
- libcfs_id2str(req->rq_peer),
- nrq->nr_u.tbf.tr_sequence);
+ "TBF dequeues: class@%p rate %llu gen %llu "
+ "token %llu, rule@%p rate %llu gen %llu\n",
+ cli, cli->tc_rpc_rate,
+ cli->tc_rule_generation, cli->tc_ntoken,
+ cli->tc_rule, cli->tc_rule->tr_rpc_rate,
+ cli->tc_rule->tr_generation);
} else {
ktime_t time;
+ if (rule->tr_flags & NTRS_REALTIME) {
+ cli->tc_deadline = deadline;
+ cli->tc_nsecs_resid = old_resid;
+ cfs_binheap_relocate(head->th_binheap,
+ &cli->tc_node);
+ if (node != cfs_binheap_root(head->th_binheap))
+ return nrs_tbf_req_get(policy,
+ peek, force);
+ }
policy->pol_nrs->nrs_throttling = 1;
head->th_deadline = deadline;
time = ktime_set(0, 0);
struct nrs_tbf_head, th_res);
if (list_empty(&cli->tc_list)) {
LASSERT(!cli->tc_in_heap);
+ cli->tc_deadline = cli->tc_check_time + cli->tc_nsecs;
rc = cfs_binheap_insert(head->th_binheap, &cli->tc_node);
if (rc == 0) {
cli->tc_in_heap = true;
list_add_tail(&nrq->nr_u.tbf.tr_list,
&cli->tc_list);
if (policy->pol_nrs->nrs_throttling) {
- __u64 deadline = cli->tc_check_time +
- cli->tc_nsecs;
+ __u64 deadline = cli->tc_deadline;
if ((head->th_deadline > deadline) &&
(hrtimer_try_to_cancel(&head->th_timer)
>= 0)) {
list_add_tail(&nrq->nr_u.tbf.tr_list,
&cli->tc_list);
}
+
+ if (rc == 0)
+ CDEBUG(D_RPCTRACE,
+ "TBF enqueues: class@%p rate %llu gen %llu "
+ "token %llu, rule@%p rate %llu gen %llu\n",
+ cli, cli->tc_rpc_rate,
+ cli->tc_rule_generation, cli->tc_ntoken,
+ cli->tc_rule, cli->tc_rule->tr_rpc_rate,
+ cli->tc_rule->tr_generation);
+
return rc;
}
nrq->nr_u.tbf.tr_sequence);
}
-#ifdef CONFIG_PROC_FS
-
/**
- * lprocfs interface
+ * debugfs interface
*/
/**
static int nrs_tbf_id_parse(struct nrs_tbf_cmd *cmd, char *token)
{
int rc;
+ ENTRY;
switch (cmd->u.tc_start.ts_valid_type) {
case NRS_TBF_FLAG_JOBID:
case NRS_TBF_FLAG_OPCODE:
rc = nrs_tbf_opcode_parse(cmd, token);
break;
+ case NRS_TBF_FLAG_GENERIC:
+ rc = nrs_tbf_generic_parse(cmd, token);
+ break;
+ case NRS_TBF_FLAG_UID:
+ case NRS_TBF_FLAG_GID:
+ rc = nrs_tbf_ug_id_parse(cmd, token);
+ break;
default:
RETURN(-EINVAL);
}
- return rc;
+ RETURN(rc);
}
static void nrs_tbf_cmd_fini(struct nrs_tbf_cmd *cmd)
{
if (cmd->tc_cmd == NRS_CTL_TBF_START_RULE) {
- if (cmd->u.tc_start.ts_valid_type == NRS_TBF_FLAG_JOBID)
+ switch (cmd->u.tc_start.ts_valid_type) {
+ case NRS_TBF_FLAG_JOBID:
nrs_tbf_jobid_cmd_fini(cmd);
- else if (cmd->u.tc_start.ts_valid_type == NRS_TBF_FLAG_NID)
+ break;
+ case NRS_TBF_FLAG_NID:
nrs_tbf_nid_cmd_fini(cmd);
- else if (cmd->u.tc_start.ts_valid_type == NRS_TBF_FLAG_OPCODE)
+ break;
+ case NRS_TBF_FLAG_OPCODE:
nrs_tbf_opcode_cmd_fini(cmd);
+ break;
+ case NRS_TBF_FLAG_GENERIC:
+ nrs_tbf_generic_cmd_fini(cmd);
+ break;
+ case NRS_TBF_FLAG_UID:
+ case NRS_TBF_FLAG_GID:
+ nrs_tbf_id_cmd_fini(cmd);
+ break;
+ default:
+ CWARN("unknown NRS_TBF_FLAGS:0x%x\n",
+ cmd->u.tc_start.ts_valid_type);
+ }
}
}
cmd->u.tc_change.tc_next_name = val;
else
return -EINVAL;
+ } else if (strcmp(key, "realtime") == 0) {
+ unsigned long realtime;
+
+ rc = kstrtoul(val, 10, &realtime);
+ if (rc)
+ return rc;
+
+ if (realtime > 0)
+ cmd->u.tc_start.ts_rule_flags |= NTRS_REALTIME;
} else {
return -EINVAL;
}
return type;
}
-extern struct nrs_core nrs_core;
#define LPROCFS_WR_NRS_TBF_MAX_CMD (4096)
static ssize_t
ptlrpc_lprocfs_nrs_tbf_rule_seq_write(struct file *file,
out:
return rc ? rc : count;
}
-LPROC_SEQ_FOPS(ptlrpc_lprocfs_nrs_tbf_rule);
+
+LDEBUGFS_SEQ_FOPS(ptlrpc_lprocfs_nrs_tbf_rule);
/**
* Initializes a TBF policy's lprocfs interface for service \a svc
{ NULL }
};
- if (svc->srv_procroot == NULL)
+ if (!svc->srv_debugfs_entry)
return 0;
- return lprocfs_add_vars(svc->srv_procroot, nrs_tbf_lprocfs_vars, NULL);
-}
-
-/**
- * Cleans up a TBF policy's lprocfs interface for service \a svc
- *
- * \param[in] svc the service
- */
-static void nrs_tbf_lprocfs_fini(struct ptlrpc_service *svc)
-{
- if (svc->srv_procroot == NULL)
- return;
-
- lprocfs_remove_proc_entry("nrs_tbf_rule", svc->srv_procroot);
+ return ldebugfs_add_vars(svc->srv_debugfs_entry, nrs_tbf_lprocfs_vars,
+ NULL);
}
-#endif /* CONFIG_PROC_FS */
-
/**
* TBF policy operations
*/
.op_req_enqueue = nrs_tbf_req_add,
.op_req_dequeue = nrs_tbf_req_del,
.op_req_stop = nrs_tbf_req_stop,
-#ifdef CONFIG_PROC_FS
.op_lprocfs_init = nrs_tbf_lprocfs_init,
- .op_lprocfs_fini = nrs_tbf_lprocfs_fini,
-#endif
};
/**
git://git.whamcloud.com / fs / lustre-release.git / blobdiff