Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Merge 'net' into 'net-next' to get the AF_PACKET bug fix that
Daniel's direct transmit changes depend upon.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/davinci_emac.txt

@@ -4,7 +4,7 @@ This file provides information, what the device node
 for the davinci_emac interface contains.
 
 Required properties:
-- compatible: "ti,davinci-dm6467-emac";
+- compatible: "ti,davinci-dm6467-emac" or "ti,am3517-emac"
 - reg: Offset and length of the register set for the device
 - ti,davinci-ctrl-reg-offset: offset to control register
 - ti,davinci-ctrl-mod-reg-offset: offset to control module register

Documentation/networking/packet_mmap.txt

@@ -123,6 +123,16 @@ Transmission process is similar to capture as shown below.
 [shutdown]  close() --------> destruction of the transmission socket and
                               deallocation of all associated resources.
 
+Socket creation and destruction is also straight forward, and is done
+the same way as in capturing described in the previous paragraph:
+
+ int fd = socket(PF_PACKET, mode, 0);
+
+The protocol can optionally be 0 in case we only want to transmit
+via this socket, which avoids an expensive call to packet_rcv().
+In this case, you also need to bind(2) the TX_RING with sll_protocol = 0
+set. Otherwise, htons(ETH_P_ALL) or any other protocol, for example.
+
 Binding the socket to your network interface is mandatory (with zero copy) to
 know the header size of frames used in the circular buffer.
 

MAINTAINERS

@@ -4450,10 +4450,8 @@ M:	Bruce Allan <bruce.w.allan@intel.com>
 M:	Carolyn Wyborny <carolyn.wyborny@intel.com>
 M:	Don Skidmore <donald.c.skidmore@intel.com>
 M:	Greg Rose <gregory.v.rose@intel.com>
-M:	Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
 M:	Alex Duyck <alexander.h.duyck@intel.com>
 M:	John Ronciak <john.ronciak@intel.com>
-M:	Tushar Dave <tushar.n.dave@intel.com>
 L:	e1000-devel@lists.sourceforge.net
 W:	http://www.intel.com/support/feedback.htm
 W:	http://e1000.sourceforge.net/

drivers/net/bonding/bond_main.c

@@ -4199,9 +4199,9 @@ static int bond_check_params(struct bond_params *params)
 	     (arp_ip_count < BOND_MAX_ARP_TARGETS) && arp_ip_target[i]; i++) {
 		/* not complete check, but should be good enough to
 		   catch mistakes */
-		__be32 ip = in_aton(arp_ip_target[i]);
-		if (!isdigit(arp_ip_target[i][0]) || ip == 0 ||
-		    ip == htonl(INADDR_BROADCAST)) {
+		__be32 ip;
+		if (!in4_pton(arp_ip_target[i], -1, (u8 *)&ip, -1, NULL) ||
+		    IS_IP_TARGET_UNUSABLE_ADDRESS(ip)) {
 			pr_warning("Warning: bad arp_ip_target module parameter (%s), ARP monitoring will not be performed\n",
 				   arp_ip_target[i]);
 			arp_interval = 0;

drivers/net/bonding/bond_sysfs.c

@@ -1634,12 +1634,12 @@ static ssize_t bonding_show_packets_per_slave(struct device *d,
 					      char *buf)
 {
 	struct bonding *bond = to_bond(d);
-	int packets_per_slave = bond->params.packets_per_slave;
+	unsigned int packets_per_slave = bond->params.packets_per_slave;
 
 	if (packets_per_slave > 1)
 		packets_per_slave = reciprocal_value(packets_per_slave);
 
-	return sprintf(buf, "%d\n", packets_per_slave);
+	return sprintf(buf, "%u\n", packets_per_slave);
 }
 
 static ssize_t bonding_store_packets_per_slave(struct device *d,

drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c

@@ -3114,6 +3114,11 @@ int bnx2x_sriov_configure(struct pci_dev *dev, int num_vfs_param)
 {
 	struct bnx2x *bp = netdev_priv(pci_get_drvdata(dev));
 
+	if (!IS_SRIOV(bp)) {
+		BNX2X_ERR("failed to configure SR-IOV since vfdb was not allocated. Check dmesg for errors in probe stage\n");
+		return -EINVAL;
+	}
+
 	DP(BNX2X_MSG_IOV, "bnx2x_sriov_configure called with %d, BNX2X_NR_VIRTFN(bp) was %d\n",
 	   num_vfs_param, BNX2X_NR_VIRTFN(bp));
 

drivers/net/ethernet/emulex/benet/be_hw.h

@@ -64,6 +64,9 @@
 #define SLIPORT_ERROR_NO_RESOURCE1	0x2
 #define SLIPORT_ERROR_NO_RESOURCE2	0x9
 
+#define SLIPORT_ERROR_FW_RESET1		0x2
+#define SLIPORT_ERROR_FW_RESET2		0x0
+
 /********* Memory BAR register ************/
 #define PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET 	0xfc
 /* Host Interrupt Enable, if set interrupts are enabled although "PCI Interrupt

drivers/net/ethernet/emulex/benet/be_main.c

@@ -2464,8 +2464,16 @@ void be_detect_error(struct be_adapter *adapter)
 	 */
 	if (sliport_status & SLIPORT_STATUS_ERR_MASK) {
 		adapter->hw_error = true;
-		dev_err(&adapter->pdev->dev,
-			"Error detected in the card\n");
+		/* Do not log error messages if its a FW reset */
+		if (sliport_err1 == SLIPORT_ERROR_FW_RESET1 &&
+		    sliport_err2 == SLIPORT_ERROR_FW_RESET2) {
+			dev_info(&adapter->pdev->dev,
+				 "Firmware update in progress\n");
+			return;
+		} else {
+			dev_err(&adapter->pdev->dev,
+				"Error detected in the card\n");
+		}
 	}
 
 	if (sliport_status & SLIPORT_STATUS_ERR_MASK) {
@@ -2932,28 +2940,35 @@ static void be_cancel_worker(struct be_adapter *adapter)
 	}
 }
 
-static int be_clear(struct be_adapter *adapter)
+static void be_mac_clear(struct be_adapter *adapter)
 {
 	int i;
 
+	if (adapter->pmac_id) {
+		for (i = 0; i < (adapter->uc_macs + 1); i++)
+			be_cmd_pmac_del(adapter, adapter->if_handle,
+					adapter->pmac_id[i], 0);
+		adapter->uc_macs = 0;
+
+		kfree(adapter->pmac_id);
+		adapter->pmac_id = NULL;
+	}
+}
+
+static int be_clear(struct be_adapter *adapter)
+{
 	be_cancel_worker(adapter);
 
 	if (sriov_enabled(adapter))
 		be_vf_clear(adapter);
 
 	/* delete the primary mac along with the uc-mac list */
-	for (i = 0; i < (adapter->uc_macs + 1); i++)
-		be_cmd_pmac_del(adapter, adapter->if_handle,
-				adapter->pmac_id[i], 0);
-	adapter->uc_macs = 0;
+	be_mac_clear(adapter);
 
 	be_cmd_if_destroy(adapter, adapter->if_handle,  0);
 
 	be_clear_queues(adapter);
 
-	kfree(adapter->pmac_id);
-	adapter->pmac_id = NULL;
-
 	be_msix_disable(adapter);
 	return 0;
 }
@@ -3812,6 +3827,8 @@ static int lancer_fw_download(struct be_adapter *adapter,
 	}
 
 	if (change_status == LANCER_FW_RESET_NEEDED) {
+		dev_info(&adapter->pdev->dev,
+			 "Resetting adapter to activate new FW\n");
 		status = lancer_physdev_ctrl(adapter,
 					     PHYSDEV_CONTROL_FW_RESET_MASK);
 		if (status) {
@@ -4363,13 +4380,13 @@ static int lancer_recover_func(struct be_adapter *adapter)
 			goto err;
 	}
 
-	dev_err(dev, "Error recovery successful\n");
+	dev_err(dev, "Adapter recovery successful\n");
 	return 0;
 err:
 	if (status == -EAGAIN)
 		dev_err(dev, "Waiting for resource provisioning\n");
 	else
-		dev_err(dev, "Error recovery failed\n");
+		dev_err(dev, "Adapter recovery failed\n");
 
 	return status;
 }

drivers/net/ethernet/marvell/mvneta.c

@@ -1378,7 +1378,7 @@ static void mvneta_rxq_drop_pkts(struct mvneta_port *pp,
 
 		dev_kfree_skb_any(skb);
 		dma_unmap_single(pp->dev->dev.parent, rx_desc->buf_phys_addr,
-				 rx_desc->data_size, DMA_FROM_DEVICE);
+				 MVNETA_RX_BUF_SIZE(pp->pkt_size), DMA_FROM_DEVICE);
 	}
 
 	if (rx_done)
@@ -1424,7 +1424,7 @@ static int mvneta_rx(struct mvneta_port *pp, int rx_todo,
 		}
 
 		dma_unmap_single(pp->dev->dev.parent, rx_desc->buf_phys_addr,
-				 rx_desc->data_size, DMA_FROM_DEVICE);
+				 MVNETA_RX_BUF_SIZE(pp->pkt_size), DMA_FROM_DEVICE);
 
 		rx_bytes = rx_desc->data_size -
 			(ETH_FCS_LEN + MVNETA_MH_SIZE);

drivers/net/ethernet/nvidia/forcedeth.c

@@ -5149,8 +5149,10 @@ static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64
 {
 	struct fe_priv *np = netdev_priv(dev);
 	u8 __iomem *base = get_hwbase(dev);
-	int result;
-	memset(buffer, 0, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(u64));
+	int result, count;
+
+	count = nv_get_sset_count(dev, ETH_SS_TEST);
+	memset(buffer, 0, count * sizeof(u64));
 
 	if (!nv_link_test(dev)) {
 		test->flags |= ETH_TEST_FL_FAILED;
@@ -5194,7 +5196,7 @@ static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64
 			return;
 		}
 
-		if (!nv_loopback_test(dev)) {
+		if (count > NV_TEST_COUNT_BASE && !nv_loopback_test(dev)) {
 			test->flags |= ETH_TEST_FL_FAILED;
 			buffer[3] = 1;
 		}

drivers/net/ethernet/qlogic/qlge/qlge.h

@@ -18,7 +18,7 @@
  */
 #define DRV_NAME  	"qlge"
 #define DRV_STRING 	"QLogic 10 Gigabit PCI-E Ethernet Driver "
-#define DRV_VERSION	"1.00.00.33"
+#define DRV_VERSION	"1.00.00.34"
 
 #define WQ_ADDR_ALIGN	0x3	/* 4 byte alignment */
 

drivers/net/ethernet/qlogic/qlge/qlge_ethtool.c

@@ -181,6 +181,7 @@ static const char ql_gstrings_test[][ETH_GSTRING_LEN] = {
 };
 #define QLGE_TEST_LEN (sizeof(ql_gstrings_test) / ETH_GSTRING_LEN)
 #define QLGE_STATS_LEN ARRAY_SIZE(ql_gstrings_stats)
+#define QLGE_RCV_MAC_ERR_STATS	7
 
 static int ql_update_ring_coalescing(struct ql_adapter *qdev)
 {
@@ -280,6 +281,9 @@ static void ql_update_stats(struct ql_adapter *qdev)
 		iter++;
 	}
 
+	/* Update receive mac error statistics */
+	iter += QLGE_RCV_MAC_ERR_STATS;
+
 	/*
 	 * Get Per-priority TX pause frame counter statistics.
 	 */

drivers/net/ethernet/qlogic/qlge/qlge_main.c

@@ -2376,14 +2376,6 @@ static netdev_features_t qlge_fix_features(struct net_device *ndev,
 	netdev_features_t features)
 {
 	int err;
-	/*
-	 * Since there is no support for separate rx/tx vlan accel
-	 * enable/disable make sure tx flag is always in same state as rx.
-	 */
-	if (features & NETIF_F_HW_VLAN_CTAG_RX)
-		features |= NETIF_F_HW_VLAN_CTAG_TX;
-	else
-		features &= ~NETIF_F_HW_VLAN_CTAG_TX;
 
 	/* Update the behavior of vlan accel in the adapter */
 	err = qlge_update_hw_vlan_features(ndev, features);

drivers/net/ethernet/ti/davinci_emac.c

@@ -61,6 +61,7 @@
 #include <linux/davinci_emac.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <linux/of_device.h>
 #include <linux/of_irq.h>
 #include <linux/of_net.h>
 
@@ -1752,10 +1753,14 @@ static const struct net_device_ops emac_netdev_ops = {
 #endif
 };
 
+static const struct of_device_id davinci_emac_of_match[];
+
 static struct emac_platform_data *
 davinci_emac_of_get_pdata(struct platform_device *pdev, struct emac_priv *priv)
 {
 	struct device_node *np;
+	const struct of_device_id *match;
+	const struct emac_platform_data *auxdata;
 	struct emac_platform_data *pdata = NULL;
 	const u8 *mac_addr;
 
@@ -1793,7 +1798,20 @@ davinci_emac_of_get_pdata(struct platform_device *pdev, struct emac_priv *priv)
 
 	priv->phy_node = of_parse_phandle(np, "phy-handle", 0);
 	if (!priv->phy_node)
-		pdata->phy_id = "";
+		pdata->phy_id = NULL;
+
+	auxdata = pdev->dev.platform_data;
+	if (auxdata) {
+		pdata->interrupt_enable = auxdata->interrupt_enable;
+		pdata->interrupt_disable = auxdata->interrupt_disable;
+	}
+
+	match = of_match_device(davinci_emac_of_match, &pdev->dev);
+	if (match && match->data) {
+		auxdata = match->data;
+		pdata->version = auxdata->version;
+		pdata->hw_ram_addr = auxdata->hw_ram_addr;
+	}
 
 	pdev->dev.platform_data = pdata;
 
@@ -2020,8 +2038,14 @@ static const struct dev_pm_ops davinci_emac_pm_ops = {
 };
 
 #if IS_ENABLED(CONFIG_OF)
+static const struct emac_platform_data am3517_emac_data = {
+	.version		= EMAC_VERSION_2,
+	.hw_ram_addr		= 0x01e20000,
+};
+
 static const struct of_device_id davinci_emac_of_match[] = {
 	{.compatible = "ti,davinci-dm6467-emac", },
+	{.compatible = "ti,am3517-emac", .data = &am3517_emac_data, },
 	{},
 };
 MODULE_DEVICE_TABLE(of, davinci_emac_of_match);

drivers/net/macvtap.c

@@ -872,6 +872,8 @@ static ssize_t macvtap_aio_read(struct kiocb *iocb, const struct iovec *iv,
 
 	ret = macvtap_do_read(q, iv, len, file->f_flags & O_NONBLOCK);
 	ret = min_t(ssize_t, ret, len); /* XXX copied from tun.c. Why? */
+	if (ret > 0)
+		iocb->ki_pos = ret;
 out:
 	return ret;
 }

drivers/net/tun.c

@@ -1355,6 +1355,8 @@ static ssize_t tun_chr_aio_read(struct kiocb *iocb, const struct iovec *iv,
 	ret = tun_do_read(tun, tfile, iv, len,
 			  file->f_flags & O_NONBLOCK);
 	ret = min_t(ssize_t, ret, len);
+	if (ret > 0)
+		iocb->ki_pos = ret;
 out:
 	tun_put(tun);
 	return ret;

drivers/net/virtio_net.c

@@ -425,10 +425,10 @@ static void receive_buf(struct receive_queue *rq, void *buf, unsigned int len)
 	if (unlikely(len < sizeof(struct virtio_net_hdr) + ETH_HLEN)) {
 		pr_debug("%s: short packet %i\n", dev->name, len);
 		dev->stats.rx_length_errors++;
-		if (vi->big_packets)
-			give_pages(rq, buf);
-		else if (vi->mergeable_rx_bufs)
+		if (vi->mergeable_rx_bufs)
 			put_page(virt_to_head_page(buf));
+		else if (vi->big_packets)
+			give_pages(rq, buf);
 		else
 			dev_kfree_skb(buf);
 		return;
@@ -1366,6 +1366,11 @@ static void virtnet_config_changed(struct virtio_device *vdev)
 
 static void virtnet_free_queues(struct virtnet_info *vi)
 {
+	int i;
+
+	for (i = 0; i < vi->max_queue_pairs; i++)
+		netif_napi_del(&vi->rq[i].napi);
+
 	kfree(vi->rq);
 	kfree(vi->sq);
 }
@@ -1395,10 +1400,10 @@ static void free_unused_bufs(struct virtnet_info *vi)
 		struct virtqueue *vq = vi->rq[i].vq;
 
 		while ((buf = virtqueue_detach_unused_buf(vq)) != NULL) {
-			if (vi->big_packets)
-				give_pages(&vi->rq[i], buf);
-			else if (vi->mergeable_rx_bufs)
+			if (vi->mergeable_rx_bufs)
 				put_page(virt_to_head_page(buf));
+			else if (vi->big_packets)
+				give_pages(&vi->rq[i], buf);
 			else
 				dev_kfree_skb(buf);
 			--vi->rq[i].num;

drivers/net/xen-netback/netback.c

@@ -1149,49 +1149,72 @@ static int xenvif_set_skb_gso(struct xenvif *vif,
 	return 0;
 }
 
-static inline void maybe_pull_tail(struct sk_buff *skb, unsigned int len)
+static inline int maybe_pull_tail(struct sk_buff *skb, unsigned int len,
+				  unsigned int max)
 {
-	if (skb_is_nonlinear(skb) && skb_headlen(skb) < len) {
-		/* If we need to pullup then pullup to the max, so we
-		 * won't need to do it again.
-		 */
-		int target = min_t(int, skb->len, MAX_TCP_HEADER);
-		__pskb_pull_tail(skb, target - skb_headlen(skb));
-	}
+	if (skb_headlen(skb) >= len)
+		return 0;
+
+	/* If we need to pullup then pullup to the max, so we
+	 * won't need to do it again.
+	 */
+	if (max > skb->len)
+		max = skb->len;
+
+	if (__pskb_pull_tail(skb, max - skb_headlen(skb)) == NULL)
+		return -ENOMEM;
+
+	if (skb_headlen(skb) < len)
+		return -EPROTO;
+
+	return 0;
 }
 
+/* This value should be large enough to cover a tagged ethernet header plus
+ * maximally sized IP and TCP or UDP headers.
+ */
+#define MAX_IP_HDR_LEN 128
+
 static int checksum_setup_ip(struct xenvif *vif, struct sk_buff *skb,
 			     int recalculate_partial_csum)
 {
-	struct iphdr *iph = (void *)skb->data;
-	unsigned int header_size;
 	unsigned int off;
-	int err = -EPROTO;
+	bool fragment;
+	int err;
+
+	fragment = false;
+
+	err = maybe_pull_tail(skb,
+			      sizeof(struct iphdr),
+			      MAX_IP_HDR_LEN);
+	if (err < 0)
+		goto out;
 
-	off = sizeof(struct iphdr);
+	if (ip_hdr(skb)->frag_off & htons(IP_OFFSET | IP_MF))
+		fragment = true;
 
-	header_size = skb->network_header + off + MAX_IPOPTLEN;
-	maybe_pull_tail(skb, header_size);
+	off = ip_hdrlen(skb);
 
-	off = iph->ihl * 4;
+	err = -EPROTO;
 
-	switch (iph->protocol) {
+	switch (ip_hdr(skb)->protocol) {
 	case IPPROTO_TCP:
 		if (!skb_partial_csum_set(skb, off,
 					  offsetof(struct tcphdr, check)))
 			goto out;
 
 		if (recalculate_partial_csum) {
-			struct tcphdr *tcph = tcp_hdr(skb);
-
-			header_size = skb->network_header +
-				off +
-				sizeof(struct tcphdr);
-			maybe_pull_tail(skb, header_size);
-
-			tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
-							 skb->len - off,
-							 IPPROTO_TCP, 0);
+			err = maybe_pull_tail(skb,
+					      off + sizeof(struct tcphdr),
+					      MAX_IP_HDR_LEN);
+			if (err < 0)
+				goto out;
+
+			tcp_hdr(skb)->check =
+				~csum_tcpudp_magic(ip_hdr(skb)->saddr,
+						   ip_hdr(skb)->daddr,
+						   skb->len - off,
+						   IPPROTO_TCP, 0);
 		}
 		break;
 	case IPPROTO_UDP:
@@ -1200,24 +1223,20 @@ static int checksum_setup_ip(struct xenvif *vif, struct sk_buff *skb,
 			goto out;
 
 		if (recalculate_partial_csum) {
-			struct udphdr *udph = udp_hdr(skb);
-
-			header_size = skb->network_header +
-				off +
-				sizeof(struct udphdr);
-			maybe_pull_tail(skb, header_size);
-
-			udph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
-							 skb->len - off,
-							 IPPROTO_UDP, 0);
+			err = maybe_pull_tail(skb,
+					      off + sizeof(struct udphdr),
+					      MAX_IP_HDR_LEN);
+			if (err < 0)
+				goto out;
+
+			udp_hdr(skb)->check =
+				~csum_tcpudp_magic(ip_hdr(skb)->saddr,
+						   ip_hdr(skb)->daddr,
+						   skb->len - off,
+						   IPPROTO_UDP, 0);
 		}
 		break;
 	default:
-		if (net_ratelimit())
-			netdev_err(vif->dev,
-				   "Attempting to checksum a non-TCP/UDP packet, "
-				   "dropping a protocol %d packet\n",
-				   iph->protocol);
 		goto out;
 	}
 
@@ -1227,75 +1246,99 @@ static int checksum_setup_ip(struct xenvif *vif, struct sk_buff *skb,
 	return err;
 }
 
+/* This value should be large enough to cover a tagged ethernet header plus
+ * an IPv6 header, all options, and a maximal TCP or UDP header.
+ */
+#define MAX_IPV6_HDR_LEN 256
+
+#define OPT_HDR(type, skb, off) \
+	(type *)(skb_network_header(skb) + (off))
+
 static int checksum_setup_ipv6(struct xenvif *vif, struct sk_buff *skb,
 			       int recalculate_partial_csum)
 {
-	int err = -EPROTO;
-	struct ipv6hdr *ipv6h = (void *)skb->data;
+	int err;
 	u8 nexthdr;
-	unsigned int header_size;
 	unsigned int off;
+	unsigned int len;
 	bool fragment;
 	bool done;
 
+	fragment = false;
 	done = false;
 
 	off = sizeof(struct ipv6hdr);
 
-	header_size = skb->network_header + off;
-	maybe_pull_tail(skb, header_size);
+	err = maybe_pull_tail(skb, off, MAX_IPV6_HDR_LEN);
+	if (err < 0)
+		goto out;
 
-	nexthdr = ipv6h->nexthdr;
+	nexthdr = ipv6_hdr(skb)->nexthdr;
 
-	while ((off <= sizeof(struct ipv6hdr) + ntohs(ipv6h->payload_len)) &&
-	       !done) {
+	len = sizeof(struct ipv6hdr) + ntohs(ipv6_hdr(skb)->payload_len);
+	while (off <= len && !done) {
 		switch (nexthdr) {
 		case IPPROTO_DSTOPTS:
 		case IPPROTO_HOPOPTS:
 		case IPPROTO_ROUTING: {
-			struct ipv6_opt_hdr *hp = (void *)(skb->data + off);
+			struct ipv6_opt_hdr *hp;
 
-			header_size = skb->network_header +
-				off +
-				sizeof(struct ipv6_opt_hdr);
-			maybe_pull_tail(skb, header_size);
+			err = maybe_pull_tail(skb,
+					      off +
+					      sizeof(struct ipv6_opt_hdr),
+					      MAX_IPV6_HDR_LEN);
+			if (err < 0)
+				goto out;
 
+			hp = OPT_HDR(struct ipv6_opt_hdr, skb, off);
 			nexthdr = hp->nexthdr;
 			off += ipv6_optlen(hp);
 			break;
 		}
 		case IPPROTO_AH: {
-			struct ip_auth_hdr *hp = (void *)(skb->data + off);
+			struct ip_auth_hdr *hp;
+
+			err = maybe_pull_tail(skb,
+					      off +
+					      sizeof(struct ip_auth_hdr),
+					      MAX_IPV6_HDR_LEN);
+			if (err < 0)
+				goto out;
+
+			hp = OPT_HDR(struct ip_auth_hdr, skb, off);
+			nexthdr = hp->nexthdr;
+			off += ipv6_authlen(hp);
+			break;
+		}
+		case IPPROTO_FRAGMENT: {
+			struct frag_hdr *hp;
 
-			header_size = skb->network_header +
-				off +
-				sizeof(struct ip_auth_hdr);
-			maybe_pull_tail(skb, header_size);
+			err = maybe_pull_tail(skb,
+					      off +
+					      sizeof(struct frag_hdr),
+					      MAX_IPV6_HDR_LEN);
+			if (err < 0)
+				goto out;
+
+			hp = OPT_HDR(struct frag_hdr, skb, off);
+
+			if (hp->frag_off & htons(IP6_OFFSET | IP6_MF))
+				fragment = true;
 
 			nexthdr = hp->nexthdr;
-			off += (hp->hdrlen+2)<<2;
+			off += sizeof(struct frag_hdr);
 			break;
 		}
-		case IPPROTO_FRAGMENT:
-			fragment = true;
-			/* fall through */
 		default:
 			done = true;
 			break;
 		}
 	}
 
-	if (!done) {
-		if (net_ratelimit())
-			netdev_err(vif->dev, "Failed to parse packet header\n");
-		goto out;
-	}
+	err = -EPROTO;
 
-	if (fragment) {
-		if (net_ratelimit())
-			netdev_err(vif->dev, "Packet is a fragment!\n");
+	if (!done || fragment)
 		goto out;
-	}
 
 	switch (nexthdr) {
 	case IPPROTO_TCP:
@@ -1304,17 +1347,17 @@ static int checksum_setup_ipv6(struct xenvif *vif, struct sk_buff *skb,
 			goto out;
 
 		if (recalculate_partial_csum) {
-			struct tcphdr *tcph = tcp_hdr(skb);
-
-			header_size = skb->network_header +
-				off +
-				sizeof(struct tcphdr);
-			maybe_pull_tail(skb, header_size);
-
-			tcph->check = ~csum_ipv6_magic(&ipv6h->saddr,
-						       &ipv6h->daddr,
-						       skb->len - off,
-						       IPPROTO_TCP, 0);
+			err = maybe_pull_tail(skb,
+					      off + sizeof(struct tcphdr),
+					      MAX_IPV6_HDR_LEN);
+			if (err < 0)
+				goto out;
+
+			tcp_hdr(skb)->check =
+				~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
+						 &ipv6_hdr(skb)->daddr,
+						 skb->len - off,
+						 IPPROTO_TCP, 0);
 		}
 		break;
 	case IPPROTO_UDP:
@@ -1323,25 +1366,20 @@ static int checksum_setup_ipv6(struct xenvif *vif, struct sk_buff *skb,
 			goto out;
 
 		if (recalculate_partial_csum) {
-			struct udphdr *udph = udp_hdr(skb);
-
-			header_size = skb->network_header +
-				off +
-				sizeof(struct udphdr);
-			maybe_pull_tail(skb, header_size);
-
-			udph->check = ~csum_ipv6_magic(&ipv6h->saddr,
-						       &ipv6h->daddr,
-						       skb->len - off,
-						       IPPROTO_UDP, 0);
+			err = maybe_pull_tail(skb,
+					      off + sizeof(struct udphdr),
+					      MAX_IPV6_HDR_LEN);
+			if (err < 0)
+				goto out;
+
+			udp_hdr(skb)->check =
+				~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
+						 &ipv6_hdr(skb)->daddr,
+						 skb->len - off,
+						 IPPROTO_UDP, 0);
 		}
 		break;
 	default:
-		if (net_ratelimit())
-			netdev_err(vif->dev,
-				   "Attempting to checksum a non-TCP/UDP packet, "
-				   "dropping a protocol %d packet\n",
-				   nexthdr);
 		goto out;
 	}
 

include/linux/ipv6.h

@@ -4,6 +4,7 @@
 #include <uapi/linux/ipv6.h>
 
 #define ipv6_optlen(p)  (((p)->hdrlen+1) << 3)
+#define ipv6_authlen(p) (((p)->hdrlen+2) << 2)
 /*
  * This structure contains configuration options per IPv6 link.
  */

include/net/ipv6.h

@@ -110,7 +110,8 @@ struct frag_hdr {
 	__be32	identification;
 };
 
-#define	IP6_MF	0x0001
+#define	IP6_MF		0x0001
+#define	IP6_OFFSET	0xFFF8
 
 #include <net/sock.h>
 

include/net/sock.h

@@ -1035,7 +1035,6 @@ enum cg_proto_flags {
 };
 
 struct cg_proto {
-	void			(*enter_memory_pressure)(struct sock *sk);
 	struct res_counter	memory_allocated;	/* Current allocated memory. */
 	struct percpu_counter	sockets_allocated;	/* Current number of sockets. */
 	int			memory_pressure;
@@ -1155,8 +1154,7 @@ static inline void sk_leave_memory_pressure(struct sock *sk)
 		struct proto *prot = sk->sk_prot;
 
 		for (; cg_proto; cg_proto = parent_cg_proto(prot, cg_proto))
-			if (cg_proto->memory_pressure)
-				cg_proto->memory_pressure = 0;
+			cg_proto->memory_pressure = 0;
 	}
 
 }
@@ -1171,7 +1169,7 @@ static inline void sk_enter_memory_pressure(struct sock *sk)
 		struct proto *prot = sk->sk_prot;
 
 		for (; cg_proto; cg_proto = parent_cg_proto(prot, cg_proto))
-			cg_proto->enter_memory_pressure(sk);
+			cg_proto->memory_pressure = 1;
 	}
 
 	sk->sk_prot->enter_memory_pressure(sk);

net/bridge/br_private.h

@@ -426,6 +426,16 @@ netdev_features_t br_features_recompute(struct net_bridge *br,
 int br_handle_frame_finish(struct sk_buff *skb);
 rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
 
+static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
+{
+	return rcu_dereference(dev->rx_handler) == br_handle_frame;
+}
+
+static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
+{
+	return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
+}
+
 /* br_ioctl.c */
 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,

net/bridge/br_stp_bpdu.c

@@ -153,7 +153,7 @@ void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
 	if (buf[0] != 0 || buf[1] != 0 || buf[2] != 0)
 		goto err;
 
-	p = br_port_get_rcu(dev);
+	p = br_port_get_check_rcu(dev);
 	if (!p)
 		goto err;
 

net/core/skbuff.c

@@ -3584,6 +3584,7 @@ void skb_scrub_packet(struct sk_buff *skb, bool xnet)
 	skb->tstamp.tv64 = 0;
 	skb->pkt_type = PACKET_HOST;
 	skb->skb_iif = 0;
+	skb->local_df = 0;
 	skb_dst_drop(skb);
 	skb->mark = 0;
 	secpath_reset(skb);

net/ipv4/tcp_memcontrol.c

@@ -6,13 +6,6 @@
 #include <linux/memcontrol.h>
 #include <linux/module.h>
 
-static void memcg_tcp_enter_memory_pressure(struct sock *sk)
-{
-	if (sk->sk_cgrp->memory_pressure)
-		sk->sk_cgrp->memory_pressure = 1;
-}
-EXPORT_SYMBOL(memcg_tcp_enter_memory_pressure);
-
 int tcp_init_cgroup(struct mem_cgroup *memcg, struct cgroup_subsys *ss)
 {
 	/*

net/packet/af_packet.c

@@ -237,6 +237,30 @@ struct packet_skb_cb {
 static void __fanout_unlink(struct sock *sk, struct packet_sock *po);
 static void __fanout_link(struct sock *sk, struct packet_sock *po);
 
+static struct net_device *packet_cached_dev_get(struct packet_sock *po)
+{
+	struct net_device *dev;
+
+	rcu_read_lock();
+	dev = rcu_dereference(po->cached_dev);
+	if (likely(dev))
+		dev_hold(dev);
+	rcu_read_unlock();
+
+	return dev;
+}
+
+static void packet_cached_dev_assign(struct packet_sock *po,
+				     struct net_device *dev)
+{
+	rcu_assign_pointer(po->cached_dev, dev);
+}
+
+static void packet_cached_dev_reset(struct packet_sock *po)
+{
+	RCU_INIT_POINTER(po->cached_dev, NULL);
+}
+
 /* register_prot_hook must be invoked with the po->bind_lock held,
  * or from a context in which asynchronous accesses to the packet
  * socket is not possible (packet_create()).
@@ -246,12 +270,10 @@ static void register_prot_hook(struct sock *sk)
 	struct packet_sock *po = pkt_sk(sk);
 
 	if (!po->running) {
-		if (po->fanout) {
+		if (po->fanout)
 			__fanout_link(sk, po);
-		} else {
+		else
 			dev_add_pack(&po->prot_hook);
-			rcu_assign_pointer(po->cached_dev, po->prot_hook.dev);
-		}
 
 		sock_hold(sk);
 		po->running = 1;
@@ -270,12 +292,11 @@ static void __unregister_prot_hook(struct sock *sk, bool sync)
 	struct packet_sock *po = pkt_sk(sk);
 
 	po->running = 0;
-	if (po->fanout) {
+
+	if (po->fanout)
 		__fanout_unlink(sk, po);
-	} else {
+	else
 		__dev_remove_pack(&po->prot_hook);
-		RCU_INIT_POINTER(po->cached_dev, NULL);
-	}
 
 	__sock_put(sk);
 
@@ -2061,19 +2082,6 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
 	return tp_len;
 }
 
-static struct net_device *packet_cached_dev_get(struct packet_sock *po)
-{
-	struct net_device *dev;
-
-	rcu_read_lock();
-	dev = rcu_dereference(po->cached_dev);
-	if (dev)
-		dev_hold(dev);
-	rcu_read_unlock();
-
-	return dev;
-}
-
 static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
 {
 	struct sk_buff *skb;
@@ -2090,7 +2098,7 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
 
 	mutex_lock(&po->pg_vec_lock);
 
-	if (saddr == NULL) {
+	if (likely(saddr == NULL)) {
 		dev	= packet_cached_dev_get(po);
 		proto	= po->num;
 		addr	= NULL;
@@ -2244,7 +2252,7 @@ static int packet_snd(struct socket *sock,
 	 *	Get and verify the address.
 	 */
 
-	if (saddr == NULL) {
+	if (likely(saddr == NULL)) {
 		dev	= packet_cached_dev_get(po);
 		proto	= po->num;
 		addr	= NULL;
@@ -2453,6 +2461,8 @@ static int packet_release(struct socket *sock)
 
 	spin_lock(&po->bind_lock);
 	unregister_prot_hook(sk, false);
+	packet_cached_dev_reset(po);
+
 	if (po->prot_hook.dev) {
 		dev_put(po->prot_hook.dev);
 		po->prot_hook.dev = NULL;
@@ -2508,14 +2518,17 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 protoc
 
 	spin_lock(&po->bind_lock);
 	unregister_prot_hook(sk, true);
+
 	po->num = protocol;
 	po->prot_hook.type = protocol;
 	if (po->prot_hook.dev)
 		dev_put(po->prot_hook.dev);
-	po->prot_hook.dev = dev;
 
+	po->prot_hook.dev = dev;
 	po->ifindex = dev ? dev->ifindex : 0;
 
+	packet_cached_dev_assign(po, dev);
+
 	if (protocol == 0)
 		goto out_unlock;
 
@@ -2628,7 +2641,8 @@ static int packet_create(struct net *net, struct socket *sock, int protocol,
 	po = pkt_sk(sk);
 	sk->sk_family = PF_PACKET;
 	po->num = proto;
-	RCU_INIT_POINTER(po->cached_dev, NULL);
+
+	packet_cached_dev_reset(po);
 
 	sk->sk_destruct = packet_sock_destruct;
 	sk_refcnt_debug_inc(sk);
@@ -3339,6 +3353,7 @@ static int packet_notifier(struct notifier_block *this,
 						sk->sk_error_report(sk);
 				}
 				if (msg == NETDEV_UNREGISTER) {
+					packet_cached_dev_reset(po);
 					po->ifindex = -1;
 					if (po->prot_hook.dev)
 						dev_put(po->prot_hook.dev);

net/sched/act_api.c

@@ -270,6 +270,16 @@ int tcf_register_action(struct tc_action_ops *act)
 {
 	struct tc_action_ops *a, **ap;
 
+	/* Must supply act, dump, cleanup and init */
+	if (!act->act || !act->dump || !act->cleanup || !act->init)
+		return -EINVAL;
+
+	/* Supply defaults */
+	if (!act->lookup)
+		act->lookup = tcf_hash_search;
+	if (!act->walk)
+		act->walk = tcf_generic_walker;
+
 	write_lock(&act_mod_lock);
 	for (ap = &act_base; (a = *ap) != NULL; ap = &a->next) {
 		if (act->type == a->type || (strcmp(act->kind, a->kind) == 0)) {
@@ -381,7 +391,7 @@ int tcf_action_exec(struct sk_buff *skb, const struct tc_action *act,
 	}
 	while ((a = act) != NULL) {
 repeat:
-		if (a->ops && a->ops->act) {
+		if (a->ops) {
 			ret = a->ops->act(skb, a, res);
 			if (TC_MUNGED & skb->tc_verd) {
 				/* copied already, allow trampling */
@@ -405,7 +415,7 @@ void tcf_action_destroy(struct tc_action *act, int bind)
 	struct tc_action *a;
 
 	for (a = act; a; a = act) {
-		if (a->ops && a->ops->cleanup) {
+		if (a->ops) {
 			if (a->ops->cleanup(a, bind) == ACT_P_DELETED)
 				module_put(a->ops->owner);
 			act = act->next;
@@ -424,7 +434,7 @@ tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
 {
 	int err = -EINVAL;
 
-	if (a->ops == NULL || a->ops->dump == NULL)
+	if (a->ops == NULL)
 		return err;
 	return a->ops->dump(skb, a, bind, ref);
 }
@@ -436,7 +446,7 @@ tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
 	unsigned char *b = skb_tail_pointer(skb);
 	struct nlattr *nest;
 
-	if (a->ops == NULL || a->ops->dump == NULL)
+	if (a->ops == NULL)
 		return err;
 
 	if (nla_put_string(skb, TCA_KIND, a->ops->kind))
@@ -723,8 +733,6 @@ tcf_action_get_1(struct nlattr *nla, struct nlmsghdr *n, u32 portid)
 	a->ops = tc_lookup_action(tb[TCA_ACT_KIND]);
 	if (a->ops == NULL)
 		goto err_free;
-	if (a->ops->lookup == NULL)
-		goto err_mod;
 	err = -ENOENT;
 	if (a->ops->lookup(a, index) == 0)
 		goto err_mod;
@@ -1084,12 +1092,6 @@ tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
 	memset(&a, 0, sizeof(struct tc_action));
 	a.ops = a_o;
 
-	if (a_o->walk == NULL) {
-		WARN(1, "tc_dump_action: %s !capable of dumping table\n",
-		     a_o->kind);
-		goto out_module_put;
-	}
-
 	nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
 			cb->nlh->nlmsg_type, sizeof(*t), 0);
 	if (!nlh)

net/sched/act_csum.c

@@ -585,9 +585,7 @@ static struct tc_action_ops act_csum_ops = {
 	.act		= tcf_csum,
 	.dump		= tcf_csum_dump,
 	.cleanup	= tcf_csum_cleanup,
-	.lookup		= tcf_hash_search,
 	.init		= tcf_csum_init,
-	.walk		= tcf_generic_walker
 };
 
 MODULE_DESCRIPTION("Checksum updating actions");

net/sched/act_gact.c

@@ -206,9 +206,7 @@ static struct tc_action_ops act_gact_ops = {
 	.act		=	tcf_gact,
 	.dump		=	tcf_gact_dump,
 	.cleanup	=	tcf_gact_cleanup,
-	.lookup		=	tcf_hash_search,
 	.init		=	tcf_gact_init,
-	.walk		=	tcf_generic_walker
 };
 
 MODULE_AUTHOR("Jamal Hadi Salim(2002-4)");

net/sched/act_ipt.c

@@ -298,9 +298,7 @@ static struct tc_action_ops act_ipt_ops = {
 	.act		=	tcf_ipt,
 	.dump		=	tcf_ipt_dump,
 	.cleanup	=	tcf_ipt_cleanup,
-	.lookup		=	tcf_hash_search,
 	.init		=	tcf_ipt_init,
-	.walk		=	tcf_generic_walker
 };
 
 static struct tc_action_ops act_xt_ops = {
@@ -312,9 +310,7 @@ static struct tc_action_ops act_xt_ops = {
 	.act		=	tcf_ipt,
 	.dump		=	tcf_ipt_dump,
 	.cleanup	=	tcf_ipt_cleanup,
-	.lookup		=	tcf_hash_search,
 	.init		=	tcf_ipt_init,
-	.walk		=	tcf_generic_walker
 };
 
 MODULE_AUTHOR("Jamal Hadi Salim(2002-13)");

net/sched/act_mirred.c

@@ -271,9 +271,7 @@ static struct tc_action_ops act_mirred_ops = {
 	.act		=	tcf_mirred,
 	.dump		=	tcf_mirred_dump,
 	.cleanup	=	tcf_mirred_cleanup,
-	.lookup		=	tcf_hash_search,
 	.init		=	tcf_mirred_init,
-	.walk		=	tcf_generic_walker
 };
 
 MODULE_AUTHOR("Jamal Hadi Salim(2002)");

net/sched/act_nat.c

@@ -308,9 +308,7 @@ static struct tc_action_ops act_nat_ops = {
 	.act		=	tcf_nat,
 	.dump		=	tcf_nat_dump,
 	.cleanup	=	tcf_nat_cleanup,
-	.lookup		=	tcf_hash_search,
 	.init		=	tcf_nat_init,
-	.walk		=	tcf_generic_walker
 };
 
 MODULE_DESCRIPTION("Stateless NAT actions");

net/sched/act_pedit.c

@@ -243,9 +243,7 @@ static struct tc_action_ops act_pedit_ops = {
 	.act		=	tcf_pedit,
 	.dump		=	tcf_pedit_dump,
 	.cleanup	=	tcf_pedit_cleanup,
-	.lookup		=	tcf_hash_search,
 	.init		=	tcf_pedit_init,
-	.walk		=	tcf_generic_walker
 };
 
 MODULE_AUTHOR("Jamal Hadi Salim(2002-4)");

net/sched/act_police.c

@@ -407,7 +407,6 @@ static struct tc_action_ops act_police_ops = {
 	.act		=	tcf_act_police,
 	.dump		=	tcf_act_police_dump,
 	.cleanup	=	tcf_act_police_cleanup,
-	.lookup		=	tcf_hash_search,
 	.init		=	tcf_act_police_locate,
 	.walk		=	tcf_act_police_walker
 };

net/sched/act_simple.c

@@ -201,7 +201,6 @@ static struct tc_action_ops act_simp_ops = {
 	.dump		=	tcf_simp_dump,
 	.cleanup	=	tcf_simp_cleanup,
 	.init		=	tcf_simp_init,
-	.walk		=	tcf_generic_walker,
 };
 
 MODULE_AUTHOR("Jamal Hadi Salim(2005)");

net/sched/act_skbedit.c

@@ -202,7 +202,6 @@ static struct tc_action_ops act_skbedit_ops = {
 	.dump		=	tcf_skbedit_dump,
 	.cleanup	=	tcf_skbedit_cleanup,
 	.init		=	tcf_skbedit_init,
-	.walk		=	tcf_generic_walker,
 };
 
 MODULE_AUTHOR("Alexander Duyck, <alexander.h.duyck@intel.com>");

net/sctp/transport.c

@@ -572,7 +572,7 @@ void sctp_transport_burst_limited(struct sctp_transport *t)
 	u32 old_cwnd = t->cwnd;
 	u32 max_burst_bytes;
 
-	if (t->burst_limited)
+	if (t->burst_limited || asoc->max_burst == 0)
 		return;
 
 	max_burst_bytes = t->flight_size + (asoc->max_burst * asoc->pathmtu);