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Wed, 4 Sep 2019 13:17:12 +0000 (UTC) From: Jose Abreu To: netdev@vger.kernel.org Subject: [PATCH v2 net-next 07/13] net: stmmac: selftests: Implement the ARP Offload test Date: Wed, 4 Sep 2019 15:16:59 +0200 Message-Id: <083b6a403678be95230d57af606dfc9eaa579fb2.1567602868.git.joabreu@synopsys.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190904_061716_091453_90233857 X-CRM114-Status: GOOD ( 13.91 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jose Abreu , Joao Pinto , Alexandre Torgue , linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, Maxime Coquelin , Giuseppe Cavallaro , "David S. Miller" , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Implement a test for ARP Offload feature. Signed-off-by: Jose Abreu --- Cc: Giuseppe Cavallaro Cc: Alexandre Torgue Cc: Jose Abreu Cc: "David S. Miller" Cc: Maxime Coquelin Cc: netdev@vger.kernel.org Cc: linux-stm32@st-md-mailman.stormreply.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- .../net/ethernet/stmicro/stmmac/stmmac_selftests.c | 110 +++++++++++++++++++++ 1 file changed, 110 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c index 36f74ee95295..8446b414b44d 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c @@ -196,6 +196,24 @@ static struct sk_buff *stmmac_test_get_udp_skb(struct stmmac_priv *priv, return skb; } +static struct sk_buff *stmmac_test_get_arp_skb(struct stmmac_priv *priv, + struct stmmac_packet_attrs *attr) +{ + __be32 ip_src = htonl(attr->ip_src); + __be32 ip_dst = htonl(attr->ip_dst); + struct sk_buff *skb = NULL; + + skb = arp_create(ARPOP_REQUEST, ETH_P_ARP, ip_dst, priv->dev, ip_src, + NULL, attr->src, attr->dst); + if (!skb) + return NULL; + + skb->pkt_type = PACKET_HOST; + skb->dev = priv->dev; + + return skb; +} + struct stmmac_test_priv { struct stmmac_packet_attrs *packet; struct packet_type pt; @@ -1428,6 +1446,94 @@ static int stmmac_test_l4filt_sa_udp(struct stmmac_priv *priv) return __stmmac_test_l4filt(priv, 0, dummy_port, 0, ~0, true); } +static int stmmac_test_arp_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 ethhdr *ehdr; + struct arphdr *ahdr; + + ehdr = (struct ethhdr *)skb_mac_header(skb); + if (!ether_addr_equal(ehdr->h_dest, tpriv->packet->src)) + goto out; + + ahdr = arp_hdr(skb); + if (ahdr->ar_op != htons(ARPOP_REPLY)) + goto out; + + tpriv->ok = true; + complete(&tpriv->comp); +out: + kfree_skb(skb); + return 0; +} + +static int stmmac_test_arpoffload(struct stmmac_priv *priv) +{ + unsigned char src[ETH_ALEN] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06}; + unsigned char dst[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + struct stmmac_packet_attrs attr = { }; + struct stmmac_test_priv *tpriv; + struct sk_buff *skb = NULL; + u32 ip_addr = 0xdeadcafe; + u32 ip_src = 0xdeadbeef; + int ret; + + if (!priv->dma_cap.arpoffsel) + 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_ARP); + tpriv->pt.func = stmmac_test_arp_validate; + tpriv->pt.dev = priv->dev; + tpriv->pt.af_packet_priv = tpriv; + tpriv->packet = &attr; + dev_add_pack(&tpriv->pt); + + attr.src = src; + attr.ip_src = ip_src; + attr.dst = dst; + attr.ip_dst = ip_addr; + + skb = stmmac_test_get_arp_skb(priv, &attr); + if (!skb) { + ret = -ENOMEM; + goto cleanup; + } + + ret = stmmac_set_arp_offload(priv, priv->hw, true, ip_addr); + if (ret) + goto cleanup; + + ret = dev_set_promiscuity(priv->dev, 1); + if (ret) + goto cleanup; + + skb_set_queue_mapping(skb, 0); + ret = dev_queue_xmit(skb); + if (ret) + goto cleanup_promisc; + + wait_for_completion_timeout(&tpriv->comp, STMMAC_LB_TIMEOUT); + ret = tpriv->ok ? 0 : -ETIMEDOUT; + +cleanup_promisc: + dev_set_promiscuity(priv->dev, -1); +cleanup: + stmmac_set_arp_offload(priv, priv->hw, false, 0x0); + dev_remove_pack(&tpriv->pt); + kfree(tpriv); + return ret; +} + #define STMMAC_LOOPBACK_NONE 0 #define STMMAC_LOOPBACK_MAC 1 #define STMMAC_LOOPBACK_PHY 2 @@ -1537,6 +1643,10 @@ static const struct stmmac_test { .name = "L4 SA UDP Filtering ", .lb = STMMAC_LOOPBACK_PHY, .fn = stmmac_test_l4filt_sa_udp, + }, { + .name = "ARP Offload ", + .lb = STMMAC_LOOPBACK_PHY, + .fn = stmmac_test_arpoffload, }, };