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Commit 74043f6b authored by Jose Abreu's avatar Jose Abreu Committed by David S. Miller
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net: stmmac: selftests: Add test for VLAN and Double VLAN Filtering



Add a selftest for VLAN and Double VLAN Filtering in stmmac.

Signed-off-by: default avatarJose Abreu <joabreu@synopsys.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3cd1cfcb
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+205 −0
Original line number Diff line number Diff line
@@ -715,6 +715,203 @@ static int stmmac_test_rss(struct stmmac_priv *priv)
	return __stmmac_test_loopback(priv, &attr);
}

static int stmmac_test_vlan_validate(struct sk_buff *skb,
				     struct net_device *ndev,
				     struct packet_type *pt,
				     struct net_device *orig_ndev)
{
	struct stmmac_test_priv *tpriv = pt->af_packet_priv;
	struct stmmachdr *shdr;
	struct ethhdr *ehdr;
	struct udphdr *uhdr;
	struct iphdr *ihdr;

	skb = skb_unshare(skb, GFP_ATOMIC);
	if (!skb)
		goto out;

	if (skb_linearize(skb))
		goto out;
	if (skb_headlen(skb) < (STMMAC_TEST_PKT_SIZE - ETH_HLEN))
		goto out;

	ehdr = (struct ethhdr *)skb_mac_header(skb);
	if (!ether_addr_equal(ehdr->h_dest, tpriv->packet->dst))
		goto out;

	ihdr = ip_hdr(skb);
	if (tpriv->double_vlan)
		ihdr = (struct iphdr *)(skb_network_header(skb) + 4);
	if (ihdr->protocol != IPPROTO_UDP)
		goto out;

	uhdr = (struct udphdr *)((u8 *)ihdr + 4 * ihdr->ihl);
	if (uhdr->dest != htons(tpriv->packet->dport))
		goto out;

	shdr = (struct stmmachdr *)((u8 *)uhdr + sizeof(*uhdr));
	if (shdr->magic != cpu_to_be64(STMMAC_TEST_PKT_MAGIC))
		goto out;

	tpriv->ok = true;
	complete(&tpriv->comp);

out:
	kfree_skb(skb);
	return 0;
}

static int stmmac_test_vlanfilt(struct stmmac_priv *priv)
{
	struct stmmac_packet_attrs attr = { };
	struct stmmac_test_priv *tpriv;
	struct sk_buff *skb = NULL;
	int ret = 0, i;

	if (!priv->dma_cap.vlhash)
		return -EOPNOTSUPP;

	tpriv = kzalloc(sizeof(*tpriv), GFP_KERNEL);
	if (!tpriv)
		return -ENOMEM;

	tpriv->ok = false;
	init_completion(&tpriv->comp);

	tpriv->pt.type = htons(ETH_P_IP);
	tpriv->pt.func = stmmac_test_vlan_validate;
	tpriv->pt.dev = priv->dev;
	tpriv->pt.af_packet_priv = tpriv;
	tpriv->packet = &attr;

	/*
	 * As we use HASH filtering, false positives may appear. This is a
	 * specially chosen ID so that adjacent IDs (+4) have different
	 * HASH values.
	 */
	tpriv->vlan_id = 0x123;
	dev_add_pack(&tpriv->pt);

	ret = vlan_vid_add(priv->dev, htons(ETH_P_8021Q), tpriv->vlan_id);
	if (ret)
		goto cleanup;

	for (i = 0; i < 4; i++) {
		attr.vlan = 1;
		attr.vlan_id_out = tpriv->vlan_id + i;
		attr.dst = priv->dev->dev_addr;
		attr.sport = 9;
		attr.dport = 9;

		skb = stmmac_test_get_udp_skb(priv, &attr);
		if (!skb) {
			ret = -ENOMEM;
			goto vlan_del;
		}

		skb_set_queue_mapping(skb, 0);
		ret = dev_queue_xmit(skb);
		if (ret)
			goto vlan_del;

		wait_for_completion_timeout(&tpriv->comp, STMMAC_LB_TIMEOUT);
		ret = !tpriv->ok;
		if (ret && !i) {
			goto vlan_del;
		} else if (!ret && i) {
			ret = -1;
			goto vlan_del;
		} else {
			ret = 0;
		}

		tpriv->ok = false;
	}

vlan_del:
	vlan_vid_del(priv->dev, htons(ETH_P_8021Q), tpriv->vlan_id);
cleanup:
	dev_remove_pack(&tpriv->pt);
	kfree(tpriv);
	return ret;
}

static int stmmac_test_dvlanfilt(struct stmmac_priv *priv)
{
	struct stmmac_packet_attrs attr = { };
	struct stmmac_test_priv *tpriv;
	struct sk_buff *skb = NULL;
	int ret = 0, i;

	if (!priv->dma_cap.vlhash)
		return -EOPNOTSUPP;

	tpriv = kzalloc(sizeof(*tpriv), GFP_KERNEL);
	if (!tpriv)
		return -ENOMEM;

	tpriv->ok = false;
	tpriv->double_vlan = true;
	init_completion(&tpriv->comp);

	tpriv->pt.type = htons(ETH_P_8021Q);
	tpriv->pt.func = stmmac_test_vlan_validate;
	tpriv->pt.dev = priv->dev;
	tpriv->pt.af_packet_priv = tpriv;
	tpriv->packet = &attr;

	/*
	 * As we use HASH filtering, false positives may appear. This is a
	 * specially chosen ID so that adjacent IDs (+4) have different
	 * HASH values.
	 */
	tpriv->vlan_id = 0x123;
	dev_add_pack(&tpriv->pt);

	ret = vlan_vid_add(priv->dev, htons(ETH_P_8021AD), tpriv->vlan_id);
	if (ret)
		goto cleanup;

	for (i = 0; i < 4; i++) {
		attr.vlan = 2;
		attr.vlan_id_out = tpriv->vlan_id + i;
		attr.dst = priv->dev->dev_addr;
		attr.sport = 9;
		attr.dport = 9;

		skb = stmmac_test_get_udp_skb(priv, &attr);
		if (!skb) {
			ret = -ENOMEM;
			goto vlan_del;
		}

		skb_set_queue_mapping(skb, 0);
		ret = dev_queue_xmit(skb);
		if (ret)
			goto vlan_del;

		wait_for_completion_timeout(&tpriv->comp, STMMAC_LB_TIMEOUT);
		ret = !tpriv->ok;
		if (ret && !i) {
			goto vlan_del;
		} else if (!ret && i) {
			ret = -1;
			goto vlan_del;
		} else {
			ret = 0;
		}

		tpriv->ok = false;
	}

vlan_del:
	vlan_vid_del(priv->dev, htons(ETH_P_8021AD), tpriv->vlan_id);
cleanup:
	dev_remove_pack(&tpriv->pt);
	kfree(tpriv);
	return ret;
}

#define STMMAC_LOOPBACK_NONE	0
#define STMMAC_LOOPBACK_MAC	1
#define STMMAC_LOOPBACK_PHY	2
@@ -764,6 +961,14 @@ static const struct stmmac_test {
		.name = "RSS                  ",
		.lb = STMMAC_LOOPBACK_PHY,
		.fn = stmmac_test_rss,
	}, {
		.name = "VLAN Filtering       ",
		.lb = STMMAC_LOOPBACK_PHY,
		.fn = stmmac_test_vlanfilt,
	}, {
		.name = "Double VLAN Filtering",
		.lb = STMMAC_LOOPBACK_PHY,
		.fn = stmmac_test_dvlanfilt,
	},
};