コード例 #1
0
ファイル: offload.c プロジェクト: Lyude/linux
/**
 * nfp_flower_get_stats() - Populates flow stats obtained from hardware.
 * @app:	Pointer to the APP handle
 * @netdev:	Netdev structure.
 * @flow:	TC flower classifier offload structure
 * @egress:	Netdev is the egress dev.
 *
 * Populates a flow statistics structure which which corresponds to a
 * specific flow.
 *
 * Return: negative value on error, 0 if stats populated successfully.
 */
static int
nfp_flower_get_stats(struct nfp_app *app, struct net_device *netdev,
		     struct tc_cls_flower_offload *flow, bool egress)
{
	struct nfp_fl_payload *nfp_flow;
	struct net_device *ingr_dev;

	ingr_dev = egress ? NULL : netdev;
	nfp_flow = nfp_flower_search_fl_table(app, flow->cookie, ingr_dev,
					      NFP_FL_STATS_CTX_DONT_CARE);
	if (!nfp_flow)
		return -EINVAL;

	if (nfp_flow->ingress_offload && egress)
		return 0;

	spin_lock_bh(&nfp_flow->lock);
	tcf_exts_stats_update(flow->exts, nfp_flow->stats.bytes,
			      nfp_flow->stats.pkts, nfp_flow->stats.used);

	nfp_flow->stats.pkts = 0;
	nfp_flow->stats.bytes = 0;
	spin_unlock_bh(&nfp_flow->lock);

	return 0;
}
コード例 #2
0
ファイル: metadata.c プロジェクト: Anjali05/linux
int nfp_compile_flow_metadata(struct nfp_app *app,
			      struct tc_cls_flower_offload *flow,
			      struct nfp_fl_payload *nfp_flow,
			      struct net_device *netdev)
{
	struct nfp_flower_priv *priv = app->priv;
	struct nfp_fl_payload *check_entry;
	u8 new_mask_id;
	u32 stats_cxt;

	if (nfp_get_stats_entry(app, &stats_cxt))
		return -ENOENT;

	nfp_flow->meta.host_ctx_id = cpu_to_be32(stats_cxt);
	nfp_flow->meta.host_cookie = cpu_to_be64(flow->cookie);
	nfp_flow->ingress_dev = netdev;

	new_mask_id = 0;
	if (!nfp_check_mask_add(app, nfp_flow->mask_data,
				nfp_flow->meta.mask_len,
				&nfp_flow->meta.flags, &new_mask_id)) {
		if (nfp_release_stats_entry(app, stats_cxt))
			return -EINVAL;
		return -ENOENT;
	}

	nfp_flow->meta.flow_version = cpu_to_be64(priv->flower_version);
	priv->flower_version++;

	/* Update flow payload with mask ids. */
	nfp_flow->unmasked_data[NFP_FL_MASK_ID_LOCATION] = new_mask_id;
	priv->stats[stats_cxt].pkts = 0;
	priv->stats[stats_cxt].bytes = 0;
	priv->stats[stats_cxt].used = jiffies;

	check_entry = nfp_flower_search_fl_table(app, flow->cookie, netdev);
	if (check_entry) {
		if (nfp_release_stats_entry(app, stats_cxt))
			return -EINVAL;

		if (!nfp_check_mask_remove(app, nfp_flow->mask_data,
					   nfp_flow->meta.mask_len,
					   NULL, &new_mask_id))
			return -EINVAL;

		return -EEXIST;
	}

	return 0;
}
コード例 #3
0
ファイル: offload.c プロジェクト: Lyude/linux
/**
 * nfp_flower_del_offload() - Removes a flow from hardware.
 * @app:	Pointer to the APP handle
 * @netdev:	netdev structure.
 * @flow:	TC flower classifier offload structure
 * @egress:	Netdev is the egress dev.
 *
 * Removes a flow from the repeated hash structure and clears the
 * action payload.
 *
 * Return: negative value on error, 0 if removed successfully.
 */
static int
nfp_flower_del_offload(struct nfp_app *app, struct net_device *netdev,
		       struct tc_cls_flower_offload *flow, bool egress)
{
	struct nfp_port *port = nfp_port_from_netdev(netdev);
	struct nfp_fl_payload *nfp_flow;
	struct net_device *ingr_dev;
	int err;

	ingr_dev = egress ? NULL : netdev;
	nfp_flow = nfp_flower_search_fl_table(app, flow->cookie, ingr_dev,
					      NFP_FL_STATS_CTX_DONT_CARE);
	if (!nfp_flow)
		return egress ? 0 : -ENOENT;

	err = nfp_modify_flow_metadata(app, nfp_flow);
	if (err)
		goto err_free_flow;

	if (nfp_flow->nfp_tun_ipv4_addr)
		nfp_tunnel_del_ipv4_off(app, nfp_flow->nfp_tun_ipv4_addr);

	err = nfp_flower_xmit_flow(netdev, nfp_flow,
				   NFP_FLOWER_CMSG_TYPE_FLOW_DEL);
	if (err)
		goto err_free_flow;

err_free_flow:
	hash_del_rcu(&nfp_flow->link);
	port->tc_offload_cnt--;
	kfree(nfp_flow->action_data);
	kfree(nfp_flow->mask_data);
	kfree(nfp_flow->unmasked_data);
	kfree_rcu(nfp_flow, rcu);
	return err;
}
コード例 #4
0
ファイル: offload.c プロジェクト: Lyude/linux
/**
 * nfp_flower_add_offload() - Adds a new flow to hardware.
 * @app:	Pointer to the APP handle
 * @netdev:	netdev structure.
 * @flow:	TC flower classifier offload structure.
 * @egress:	NFP netdev is the egress.
 *
 * Adds a new flow to the repeated hash structure and action payload.
 *
 * Return: negative value on error, 0 if configured successfully.
 */
static int
nfp_flower_add_offload(struct nfp_app *app, struct net_device *netdev,
		       struct tc_cls_flower_offload *flow, bool egress)
{
	enum nfp_flower_tun_type tun_type = NFP_FL_TUNNEL_NONE;
	struct nfp_port *port = nfp_port_from_netdev(netdev);
	struct nfp_flower_priv *priv = app->priv;
	struct nfp_fl_payload *flow_pay;
	struct nfp_fl_key_ls *key_layer;
	struct net_device *ingr_dev;
	int err;

	ingr_dev = egress ? NULL : netdev;
	flow_pay = nfp_flower_search_fl_table(app, flow->cookie, ingr_dev,
					      NFP_FL_STATS_CTX_DONT_CARE);
	if (flow_pay) {
		/* Ignore as duplicate if it has been added by different cb. */
		if (flow_pay->ingress_offload && egress)
			return 0;
		else
			return -EOPNOTSUPP;
	}

	key_layer = kmalloc(sizeof(*key_layer), GFP_KERNEL);
	if (!key_layer)
		return -ENOMEM;

	err = nfp_flower_calculate_key_layers(app, key_layer, flow, egress,
					      &tun_type);
	if (err)
		goto err_free_key_ls;

	flow_pay = nfp_flower_allocate_new(key_layer, egress);
	if (!flow_pay) {
		err = -ENOMEM;
		goto err_free_key_ls;
	}

	flow_pay->ingress_dev = egress ? NULL : netdev;

	err = nfp_flower_compile_flow_match(flow, key_layer, netdev, flow_pay,
					    tun_type);
	if (err)
		goto err_destroy_flow;

	err = nfp_flower_compile_action(app, flow, netdev, flow_pay);
	if (err)
		goto err_destroy_flow;

	err = nfp_compile_flow_metadata(app, flow, flow_pay,
					flow_pay->ingress_dev);
	if (err)
		goto err_destroy_flow;

	err = nfp_flower_xmit_flow(netdev, flow_pay,
				   NFP_FLOWER_CMSG_TYPE_FLOW_ADD);
	if (err)
		goto err_destroy_flow;

	INIT_HLIST_NODE(&flow_pay->link);
	flow_pay->tc_flower_cookie = flow->cookie;
	hash_add_rcu(priv->flow_table, &flow_pay->link, flow->cookie);
	port->tc_offload_cnt++;

	/* Deallocate flow payload when flower rule has been destroyed. */
	kfree(key_layer);

	return 0;

err_destroy_flow:
	kfree(flow_pay->action_data);
	kfree(flow_pay->mask_data);
	kfree(flow_pay->unmasked_data);
	kfree(flow_pay);
err_free_key_ls:
	kfree(key_layer);
	return err;
}