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net: stmmac: selftests: Add test for VLAN and Double VLAN Filtering

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

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jose Abreu 2019-08-07 10:03:15 +02:00 committed by David S. Miller
parent 3cd1cfcba2
commit 74043f6b22
1 changed files with 205 additions and 0 deletions
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205
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
View file

@ -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,
},
};