예제 #1
0
static int nf_nat_proto_clean(struct nf_conn *ct, void *data)
{
	struct nf_conn_nat *nat = nfct_nat(ct);

	if (nf_nat_proto_remove(ct, data))
		return 1;

	if (!nat)
		return 0;

	/* This netns is being destroyed, and conntrack has nat null binding.
	 * Remove it from bysource hash, as the table will be freed soon.
	 *
	 * Else, when the conntrack is destoyed, nf_nat_cleanup_conntrack()
	 * will delete entry from already-freed table.
	 */
	ct->status &= ~IPS_NAT_DONE_MASK;
	rhashtable_remove_fast(&nf_nat_bysource_table, &ct->nat_bysource,
			       nf_nat_bysource_params);

	/* don't delete conntrack.  Although that would make things a lot
	 * simpler, we'd end up flushing all conntracks on nat rmmod.
	 */
	return 0;
}
예제 #2
0
/* No one using conntrack by the time this called. */
static void nf_nat_cleanup_conntrack(struct nf_conn *ct)
{
	struct nf_conn_nat *nat = nf_ct_ext_find(ct, NF_CT_EXT_NAT);

	if (!nat)
		return;

	rhashtable_remove_fast(&nf_nat_bysource_table, &ct->nat_bysource,
			       nf_nat_bysource_params);
}
예제 #3
0
파일: bind.c 프로젝트: AshishNamdev/linux
void rds_remove_bound(struct rds_sock *rs)
{

	if (!rs->rs_bound_addr)
		return;

	rdsdebug("rs %p unbinding from %pI4:%d\n",
		 rs, &rs->rs_bound_addr,
		 ntohs(rs->rs_bound_port));

	rhashtable_remove_fast(&bind_hash_table, &rs->rs_bound_node, ht_parms);
	rds_sock_put(rs);
	rs->rs_bound_addr = 0;
}
예제 #4
0
파일: bnxt_tc.c 프로젝트: Lyude/linux
static int bnxt_tc_put_l2_node(struct bnxt *bp,
			       struct bnxt_tc_flow_node *flow_node)
{
	struct bnxt_tc_l2_node *l2_node = flow_node->l2_node;
	struct bnxt_tc_info *tc_info = bp->tc_info;
	int rc;

	/* remove flow_node from the L2 shared flow list */
	list_del(&flow_node->l2_list_node);
	if (--l2_node->refcount == 0) {
		rc =  rhashtable_remove_fast(&tc_info->l2_table, &l2_node->node,
					     tc_info->l2_ht_params);
		if (rc)
			netdev_err(bp->dev,
				   "Error: %s: rhashtable_remove_fast: %d",
				   __func__, rc);
		kfree_rcu(l2_node, rcu);
	}
	return 0;
}
예제 #5
0
static s64 __init test_rhashtable(struct rhashtable *ht, struct test_obj *array,
				  unsigned int entries)
{
	struct test_obj *obj;
	int err;
	unsigned int i, insert_retries = 0;
	s64 start, end;

	/*
	 * Insertion Test:
	 * Insert entries into table with all keys even numbers
	 */
	pr_info("  Adding %d keys\n", entries);
	start = ktime_get_ns();
	for (i = 0; i < entries; i++) {
		struct test_obj *obj = &array[i];

		obj->value.id = i * 2;
		err = insert_retry(ht, obj, test_rht_params);
		if (err > 0)
			insert_retries += err;
		else if (err)
			return err;
	}

	if (insert_retries)
		pr_info("  %u insertions retried due to memory pressure\n",
			insert_retries);

	test_bucket_stats(ht, entries);
	rcu_read_lock();
	test_rht_lookup(ht, array, entries);
	rcu_read_unlock();

	test_bucket_stats(ht, entries);

	pr_info("  Deleting %d keys\n", entries);
	for (i = 0; i < entries; i++) {
		struct test_obj_val key = {
			.id = i * 2,
		};

		if (array[i].value.id != TEST_INSERT_FAIL) {
			obj = rhashtable_lookup_fast(ht, &key, test_rht_params);
			BUG_ON(!obj);

			rhashtable_remove_fast(ht, &obj->node, test_rht_params);
		}

		cond_resched();
	}

	end = ktime_get_ns();
	pr_info("  Duration of test: %lld ns\n", end - start);

	return end - start;
}

static struct rhashtable ht;
static struct rhltable rhlt;

static int __init test_rhltable(unsigned int entries)
{
	struct test_obj_rhl *rhl_test_objects;
	unsigned long *obj_in_table;
	unsigned int i, j, k;
	int ret, err;

	if (entries == 0)
		entries = 1;

	rhl_test_objects = vzalloc(sizeof(*rhl_test_objects) * entries);
	if (!rhl_test_objects)
		return -ENOMEM;

	ret = -ENOMEM;
	obj_in_table = vzalloc(BITS_TO_LONGS(entries) * sizeof(unsigned long));
	if (!obj_in_table)
		goto out_free;

	/* nulls_base not supported in rhlist interface */
	test_rht_params.nulls_base = 0;
	err = rhltable_init(&rhlt, &test_rht_params);
	if (WARN_ON(err))
		goto out_free;

	k = prandom_u32();
	ret = 0;
	for (i = 0; i < entries; i++) {
		rhl_test_objects[i].value.id = k;
		err = rhltable_insert(&rhlt, &rhl_test_objects[i].list_node,
				      test_rht_params);
		if (WARN(err, "error %d on element %d\n", err, i))
			break;
		if (err == 0)
			set_bit(i, obj_in_table);
	}

	if (err)
		ret = err;

	pr_info("test %d add/delete pairs into rhlist\n", entries);
	for (i = 0; i < entries; i++) {
		struct rhlist_head *h, *pos;
		struct test_obj_rhl *obj;
		struct test_obj_val key = {
			.id = k,
		};
		bool found;

		rcu_read_lock();
		h = rhltable_lookup(&rhlt, &key, test_rht_params);
		if (WARN(!h, "key not found during iteration %d of %d", i, entries)) {
			rcu_read_unlock();
			break;
		}

		if (i) {
			j = i - 1;
			rhl_for_each_entry_rcu(obj, pos, h, list_node) {
				if (WARN(pos == &rhl_test_objects[j].list_node, "old element found, should be gone"))
					break;
			}
		}

		cond_resched_rcu();

		found = false;

		rhl_for_each_entry_rcu(obj, pos, h, list_node) {
			if (pos == &rhl_test_objects[i].list_node) {
				found = true;
				break;
			}
		}

		rcu_read_unlock();

		if (WARN(!found, "element %d not found", i))
			break;

		err = rhltable_remove(&rhlt, &rhl_test_objects[i].list_node, test_rht_params);
		WARN(err, "rhltable_remove: err %d for iteration %d\n", err, i);
		if (err == 0)
			clear_bit(i, obj_in_table);
	}

	if (ret == 0 && err)
		ret = err;

	for (i = 0; i < entries; i++) {
		WARN(test_bit(i, obj_in_table), "elem %d allegedly still present", i);

		err = rhltable_insert(&rhlt, &rhl_test_objects[i].list_node,
				      test_rht_params);
		if (WARN(err, "error %d on element %d\n", err, i))
			break;
		if (err == 0)
			set_bit(i, obj_in_table);
	}

	pr_info("test %d random rhlist add/delete operations\n", entries);
	for (j = 0; j < entries; j++) {
		u32 i = prandom_u32_max(entries);
		u32 prand = prandom_u32();

		cond_resched();

		if (prand == 0)
			prand = prandom_u32();

		if (prand & 1) {
			prand >>= 1;
			continue;
		}

		err = rhltable_remove(&rhlt, &rhl_test_objects[i].list_node, test_rht_params);
		if (test_bit(i, obj_in_table)) {
			clear_bit(i, obj_in_table);
			if (WARN(err, "cannot remove element at slot %d", i))
				continue;
		} else {
			if (WARN(err != -ENOENT, "removed non-existant element %d, error %d not %d",
			     i, err, -ENOENT))
				continue;
		}

		if (prand & 1) {
			prand >>= 1;
			continue;
		}

		err = rhltable_insert(&rhlt, &rhl_test_objects[i].list_node, test_rht_params);
		if (err == 0) {
			if (WARN(test_and_set_bit(i, obj_in_table), "succeeded to insert same object %d", i))
				continue;
		} else {
			if (WARN(!test_bit(i, obj_in_table), "failed to insert object %d", i))
				continue;
		}

		if (prand & 1) {
			prand >>= 1;
			continue;
		}