From 74043f6b22c3201c63ae6ef37c4d3a96b0850e91 Mon Sep 17 00:00:00 2001 From: Jose Abreu Date: Wed, 7 Aug 2019 10:03:15 +0200 Subject: 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: Jose Abreu Signed-off-by: David S. Miller --- .../net/ethernet/stmicro/stmmac/stmmac_selftests.c | 205 +++++++++++++++++++++ 1 file changed, 205 insertions(+) (limited to 'drivers/net/ethernet/stmicro') diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c index 83b775a8cedc..6b08bb15af15 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c @@ -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, }, }; -- cgit v1.2.3-59-g8ed1b