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SubjectRe: Linux 4.4.217
diff --git a/Makefile b/Makefile
index e0bcd5a0ae9b..d983151a864b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 4
-SUBLEVEL = 216
+SUBLEVEL = 217
EXTRAVERSION =
NAME = Blurry Fish Butt

diff --git a/arch/arc/include/asm/linkage.h b/arch/arc/include/asm/linkage.h
index 5faad17118b4..3ed7ea726fb5 100644
--- a/arch/arc/include/asm/linkage.h
+++ b/arch/arc/include/asm/linkage.h
@@ -12,6 +12,8 @@
#ifdef __ASSEMBLY__

#define ASM_NL ` /* use '`' to mark new line in macro */
+#define __ALIGN .align 4
+#define __ALIGN_STR __stringify(__ALIGN)

/* annotation for data we want in DCCM - if enabled in .config */
.macro ARCFP_DATA nm
diff --git a/arch/arm/kernel/vdso.c b/arch/arm/kernel/vdso.c
index 2dee87273e51..5ab9af255c78 100644
--- a/arch/arm/kernel/vdso.c
+++ b/arch/arm/kernel/vdso.c
@@ -84,6 +84,8 @@ static bool __init cntvct_functional(void)
* this.
*/
np = of_find_compatible_node(NULL, NULL, "arm,armv7-timer");
+ if (!np)
+ np = of_find_compatible_node(NULL, NULL, "arm,armv8-timer");
if (!np)
goto out_put;

diff --git a/arch/arm/lib/copy_from_user.S b/arch/arm/lib/copy_from_user.S
index e32b51838439..05955ed85c2c 100644
--- a/arch/arm/lib/copy_from_user.S
+++ b/arch/arm/lib/copy_from_user.S
@@ -100,7 +100,7 @@ ENTRY(arm_copy_from_user)

ENDPROC(arm_copy_from_user)

- .pushsection .fixup,"ax"
+ .pushsection .text.fixup,"ax"
.align 0
copy_abort_preamble
ldmfd sp!, {r1, r2}
diff --git a/arch/x86/kernel/cpu/perf_event_amd_uncore.c b/arch/x86/kernel/cpu/perf_event_amd_uncore.c
index 49742746a6c9..98e786a779fd 100644
--- a/arch/x86/kernel/cpu/perf_event_amd_uncore.c
+++ b/arch/x86/kernel/cpu/perf_event_amd_uncore.c
@@ -181,21 +181,19 @@ static int amd_uncore_event_init(struct perf_event *event)
return -ENOENT;

/*
- * NB and L2 counters (MSRs) are shared across all cores that share the
- * same NB / L2 cache. Interrupts can be directed to a single target
- * core, however, event counts generated by processes running on other
- * cores cannot be masked out. So we do not support sampling and
- * per-thread events.
+ * NB and Last level cache counters (MSRs) are shared across all cores
+ * that share the same NB / Last level cache. On family 16h and below,
+ * Interrupts can be directed to a single target core, however, event
+ * counts generated by processes running on other cores cannot be masked
+ * out. So we do not support sampling and per-thread events via
+ * CAP_NO_INTERRUPT, and we do not enable counter overflow interrupts:
*/
- if (is_sampling_event(event) || event->attach_state & PERF_ATTACH_TASK)
- return -EINVAL;

/* NB and L2 counters do not have usr/os/guest/host bits */
if (event->attr.exclude_user || event->attr.exclude_kernel ||
event->attr.exclude_host || event->attr.exclude_guest)
return -EINVAL;

- /* and we do not enable counter overflow interrupts */
hwc->config = event->attr.config & AMD64_RAW_EVENT_MASK_NB;
hwc->idx = -1;

@@ -271,6 +269,7 @@ static struct pmu amd_nb_pmu = {
.start = amd_uncore_start,
.stop = amd_uncore_stop,
.read = amd_uncore_read,
+ .capabilities = PERF_PMU_CAP_NO_INTERRUPT,
};

static struct pmu amd_l2_pmu = {
@@ -282,6 +281,7 @@ static struct pmu amd_l2_pmu = {
.start = amd_uncore_start,
.stop = amd_uncore_stop,
.read = amd_uncore_read,
+ .capabilities = PERF_PMU_CAP_NO_INTERRUPT,
};

static struct amd_uncore *amd_uncore_alloc(unsigned int cpu)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 767be5e61913..466028623e1a 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -5010,6 +5010,7 @@ int x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len)
ctxt->fetch.ptr = ctxt->fetch.data;
ctxt->fetch.end = ctxt->fetch.data + insn_len;
ctxt->opcode_len = 1;
+ ctxt->intercept = x86_intercept_none;
if (insn_len > 0)
memcpy(ctxt->fetch.data, insn, insn_len);
else {
diff --git a/drivers/firmware/efi/efivars.c b/drivers/firmware/efi/efivars.c
index 10e6774ab2a2..fc4d0228b7d8 100644
--- a/drivers/firmware/efi/efivars.c
+++ b/drivers/firmware/efi/efivars.c
@@ -139,13 +139,16 @@ static ssize_t
efivar_attr_read(struct efivar_entry *entry, char *buf)
{
struct efi_variable *var = &entry->var;
+ unsigned long size = sizeof(var->Data);
char *str = buf;
+ int ret;

if (!entry || !buf)
return -EINVAL;

- var->DataSize = 1024;
- if (efivar_entry_get(entry, &var->Attributes, &var->DataSize, var->Data))
+ ret = efivar_entry_get(entry, &var->Attributes, &size, var->Data);
+ var->DataSize = size;
+ if (ret)
return -EIO;

if (var->Attributes & EFI_VARIABLE_NON_VOLATILE)
@@ -172,13 +175,16 @@ static ssize_t
efivar_size_read(struct efivar_entry *entry, char *buf)
{
struct efi_variable *var = &entry->var;
+ unsigned long size = sizeof(var->Data);
char *str = buf;
+ int ret;

if (!entry || !buf)
return -EINVAL;

- var->DataSize = 1024;
- if (efivar_entry_get(entry, &var->Attributes, &var->DataSize, var->Data))
+ ret = efivar_entry_get(entry, &var->Attributes, &size, var->Data);
+ var->DataSize = size;
+ if (ret)
return -EIO;

str += sprintf(str, "0x%lx\n", var->DataSize);
@@ -189,12 +195,15 @@ static ssize_t
efivar_data_read(struct efivar_entry *entry, char *buf)
{
struct efi_variable *var = &entry->var;
+ unsigned long size = sizeof(var->Data);
+ int ret;

if (!entry || !buf)
return -EINVAL;

- var->DataSize = 1024;
- if (efivar_entry_get(entry, &var->Attributes, &var->DataSize, var->Data))
+ ret = efivar_entry_get(entry, &var->Attributes, &size, var->Data);
+ var->DataSize = size;
+ if (ret)
return -EIO;

memcpy(buf, var->Data, var->DataSize);
@@ -263,6 +272,9 @@ efivar_store_raw(struct efivar_entry *entry, const char *buf, size_t count)
u8 *data;
int err;

+ if (!entry || !buf)
+ return -EINVAL;
+
if (is_compat()) {
struct compat_efi_variable *compat;

@@ -314,14 +326,16 @@ efivar_show_raw(struct efivar_entry *entry, char *buf)
{
struct efi_variable *var = &entry->var;
struct compat_efi_variable *compat;
+ unsigned long datasize = sizeof(var->Data);
size_t size;
+ int ret;

if (!entry || !buf)
return 0;

- var->DataSize = 1024;
- if (efivar_entry_get(entry, &entry->var.Attributes,
- &entry->var.DataSize, entry->var.Data))
+ ret = efivar_entry_get(entry, &var->Attributes, &datasize, var->Data);
+ var->DataSize = datasize;
+ if (ret)
return -EIO;

if (is_compat()) {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
index d799927d3a5d..96d557b97f5c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
@@ -346,8 +346,7 @@ bool amdgpu_atombios_get_connector_info_from_object_table(struct amdgpu_device *
router.ddc_valid = false;
router.cd_valid = false;
for (j = 0; j < ((le16_to_cpu(path->usSize) - 8) / 2); j++) {
- uint8_t grph_obj_type=
- grph_obj_type =
+ uint8_t grph_obj_type =
(le16_to_cpu(path->usGraphicObjIds[j]) &
OBJECT_TYPE_MASK) >> OBJECT_TYPE_SHIFT;

diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index cbad1926cec1..00169c9eb3ee 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -39,6 +39,7 @@
#include <linux/dmi.h>
#include <linux/slab.h>
#include <linux/iommu.h>
+#include <linux/limits.h>
#include <asm/irq_remapping.h>
#include <asm/iommu_table.h>

@@ -138,6 +139,13 @@ dmar_alloc_pci_notify_info(struct pci_dev *dev, unsigned long event)

BUG_ON(dev->is_virtfn);

+ /*
+ * Ignore devices that have a domain number higher than what can
+ * be looked up in DMAR, e.g. VMD subdevices with domain 0x10000
+ */
+ if (pci_domain_nr(dev->bus) > U16_MAX)
+ return NULL;
+
/* Only generate path[] for device addition event */
if (event == BUS_NOTIFY_ADD_DEVICE)
for (tmp = dev; tmp; tmp = tmp->bus->self)
@@ -438,12 +446,13 @@ static int __init dmar_parse_one_andd(struct acpi_dmar_header *header,

/* Check for NUL termination within the designated length */
if (strnlen(andd->device_name, header->length - 8) == header->length - 8) {
- WARN_TAINT(1, TAINT_FIRMWARE_WORKAROUND,
+ pr_warn(FW_BUG
"Your BIOS is broken; ANDD object name is not NUL-terminated\n"
"BIOS vendor: %s; Ver: %s; Product Version: %s\n",
dmi_get_system_info(DMI_BIOS_VENDOR),
dmi_get_system_info(DMI_BIOS_VERSION),
dmi_get_system_info(DMI_PRODUCT_VERSION));
+ add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
return -EINVAL;
}
pr_info("ANDD device: %x name: %s\n", andd->device_number,
@@ -469,14 +478,14 @@ static int dmar_parse_one_rhsa(struct acpi_dmar_header *header, void *arg)
return 0;
}
}
- WARN_TAINT(
- 1, TAINT_FIRMWARE_WORKAROUND,
+ pr_warn(FW_BUG
"Your BIOS is broken; RHSA refers to non-existent DMAR unit at %llx\n"
"BIOS vendor: %s; Ver: %s; Product Version: %s\n",
- drhd->reg_base_addr,
+ rhsa->base_address,
dmi_get_system_info(DMI_BIOS_VENDOR),
dmi_get_system_info(DMI_BIOS_VERSION),
dmi_get_system_info(DMI_PRODUCT_VERSION));
+ add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);

return 0;
}
@@ -822,14 +831,14 @@ int __init dmar_table_init(void)

static void warn_invalid_dmar(u64 addr, const char *message)
{
- WARN_TAINT_ONCE(
- 1, TAINT_FIRMWARE_WORKAROUND,
+ pr_warn_once(FW_BUG
"Your BIOS is broken; DMAR reported at address %llx%s!\n"
"BIOS vendor: %s; Ver: %s; Product Version: %s\n",
addr, message,
dmi_get_system_info(DMI_BIOS_VENDOR),
dmi_get_system_info(DMI_BIOS_VERSION),
dmi_get_system_info(DMI_PRODUCT_VERSION));
+ add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
}

static int __ref
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index a2005b82ec8f..ed6cb3abf645 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -3949,10 +3949,11 @@ static void quirk_ioat_snb_local_iommu(struct pci_dev *pdev)

/* we know that the this iommu should be at offset 0xa000 from vtbar */
drhd = dmar_find_matched_drhd_unit(pdev);
- if (WARN_TAINT_ONCE(!drhd || drhd->reg_base_addr - vtbar != 0xa000,
- TAINT_FIRMWARE_WORKAROUND,
- "BIOS assigned incorrect VT-d unit for Intel(R) QuickData Technology device\n"))
+ if (!drhd || drhd->reg_base_addr - vtbar != 0xa000) {
+ pr_warn_once(FW_BUG "BIOS assigned incorrect VT-d unit for Intel(R) QuickData Technology device\n");
+ add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
pdev->dev.archdata.iommu = DUMMY_DEVICE_DOMAIN_INFO;
+ }
}
DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB, quirk_ioat_snb_local_iommu);

@@ -5016,8 +5017,10 @@ static phys_addr_t intel_iommu_iova_to_phys(struct iommu_domain *domain,
u64 phys = 0;

pte = pfn_to_dma_pte(dmar_domain, iova >> VTD_PAGE_SHIFT, &level);
- if (pte)
- phys = dma_pte_addr(pte);
+ if (pte && dma_pte_present(pte))
+ phys = dma_pte_addr(pte) +
+ (iova & (BIT_MASK(level_to_offset_bits(level) +
+ VTD_PAGE_SHIFT) - 1));

return phys;
}
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index 0615522933dc..41bd9186d383 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -74,11 +74,6 @@ struct arp_pkt {
};
#pragma pack()

-static inline struct arp_pkt *arp_pkt(const struct sk_buff *skb)
-{
- return (struct arp_pkt *)skb_network_header(skb);
-}
-
/* Forward declaration */
static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[],
bool strict_match);
@@ -577,10 +572,11 @@ static void rlb_req_update_subnet_clients(struct bonding *bond, __be32 src_ip)
spin_unlock(&bond->mode_lock);
}

-static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bond)
+static struct slave *rlb_choose_channel(struct sk_buff *skb,
+ struct bonding *bond,
+ const struct arp_pkt *arp)
{
struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
- struct arp_pkt *arp = arp_pkt(skb);
struct slave *assigned_slave, *curr_active_slave;
struct rlb_client_info *client_info;
u32 hash_index = 0;
@@ -677,8 +673,12 @@ static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bon
*/
static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond)
{
- struct arp_pkt *arp = arp_pkt(skb);
struct slave *tx_slave = NULL;
+ struct arp_pkt *arp;
+
+ if (!pskb_network_may_pull(skb, sizeof(*arp)))
+ return NULL;
+ arp = (struct arp_pkt *)skb_network_header(skb);

/* Don't modify or load balance ARPs that do not originate locally
* (e.g.,arrive via a bridge).
@@ -688,7 +688,7 @@ static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond)

if (arp->op_code == htons(ARPOP_REPLY)) {
/* the arp must be sent on the selected rx channel */
- tx_slave = rlb_choose_channel(skb, bond);
+ tx_slave = rlb_choose_channel(skb, bond, arp);
if (tx_slave)
ether_addr_copy(arp->mac_src, tx_slave->dev->dev_addr);
netdev_dbg(bond->dev, "Server sent ARP Reply packet\n");
@@ -698,7 +698,7 @@ static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond)
* When the arp reply is received the entry will be updated
* with the correct unicast address of the client.
*/
- rlb_choose_channel(skb, bond);
+ rlb_choose_channel(skb, bond, arp);

/* The ARP reply packets must be delayed so that
* they can cancel out the influence of the ARP request.
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 81282b811a6c..d91953eabfeb 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -5310,13 +5310,13 @@ static int bnxt_change_mtu(struct net_device *dev, int new_mtu)
return -EINVAL;

if (netif_running(dev))
- bnxt_close_nic(bp, false, false);
+ bnxt_close_nic(bp, true, false);

dev->mtu = new_mtu;
bnxt_set_ring_params(bp);

if (netif_running(dev))
- return bnxt_open_nic(bp, false, false);
+ return bnxt_open_nic(bp, true, false);

return 0;
}
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 0ee164d09f39..9c608211fcfd 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -2510,15 +2510,15 @@ fec_enet_set_coalesce(struct net_device *ndev, struct ethtool_coalesce *ec)
return -EINVAL;
}

- cycle = fec_enet_us_to_itr_clock(ndev, fep->rx_time_itr);
+ cycle = fec_enet_us_to_itr_clock(ndev, ec->rx_coalesce_usecs);
if (cycle > 0xFFFF) {
pr_err("Rx coalesed usec exceeed hardware limiation");
return -EINVAL;
}

- cycle = fec_enet_us_to_itr_clock(ndev, fep->tx_time_itr);
+ cycle = fec_enet_us_to_itr_clock(ndev, ec->tx_coalesce_usecs);
if (cycle > 0xFFFF) {
- pr_err("Rx coalesed usec exceeed hardware limiation");
+ pr_err("Tx coalesed usec exceeed hardware limiation");
return -EINVAL;
}

diff --git a/drivers/net/ethernet/micrel/ks8851_mll.c b/drivers/net/ethernet/micrel/ks8851_mll.c
index d94e151cff12..d4747caf1e7c 100644
--- a/drivers/net/ethernet/micrel/ks8851_mll.c
+++ b/drivers/net/ethernet/micrel/ks8851_mll.c
@@ -831,14 +831,17 @@ static irqreturn_t ks_irq(int irq, void *pw)
{
struct net_device *netdev = pw;
struct ks_net *ks = netdev_priv(netdev);
+ unsigned long flags;
u16 status;

+ spin_lock_irqsave(&ks->statelock, flags);
/*this should be the first in IRQ handler */
ks_save_cmd_reg(ks);

status = ks_rdreg16(ks, KS_ISR);
if (unlikely(!status)) {
ks_restore_cmd_reg(ks);
+ spin_unlock_irqrestore(&ks->statelock, flags);
return IRQ_NONE;
}

@@ -864,6 +867,7 @@ static irqreturn_t ks_irq(int irq, void *pw)
ks->netdev->stats.rx_over_errors++;
/* this should be the last in IRQ handler*/
ks_restore_cmd_reg(ks);
+ spin_unlock_irqrestore(&ks->statelock, flags);
return IRQ_HANDLED;
}

@@ -933,6 +937,7 @@ static int ks_net_stop(struct net_device *netdev)

/* shutdown RX/TX QMU */
ks_disable_qmu(ks);
+ ks_disable_int(ks);

/* set powermode to soft power down to save power */
ks_set_powermode(ks, PMECR_PM_SOFTDOWN);
@@ -989,10 +994,9 @@ static netdev_tx_t ks_start_xmit(struct sk_buff *skb, struct net_device *netdev)
{
netdev_tx_t retv = NETDEV_TX_OK;
struct ks_net *ks = netdev_priv(netdev);
+ unsigned long flags;

- disable_irq(netdev->irq);
- ks_disable_int(ks);
- spin_lock(&ks->statelock);
+ spin_lock_irqsave(&ks->statelock, flags);

/* Extra space are required:
* 4 byte for alignment, 4 for status/length, 4 for CRC
@@ -1006,9 +1010,7 @@ static netdev_tx_t ks_start_xmit(struct sk_buff *skb, struct net_device *netdev)
dev_kfree_skb(skb);
} else
retv = NETDEV_TX_BUSY;
- spin_unlock(&ks->statelock);
- ks_enable_int(ks);
- enable_irq(netdev->irq);
+ spin_unlock_irqrestore(&ks->statelock, flags);
return retv;
}

diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c
index 142015af43db..835087597b82 100644
--- a/drivers/net/ipvlan/ipvlan_core.c
+++ b/drivers/net/ipvlan/ipvlan_core.c
@@ -251,6 +251,7 @@ acct:
} else {
kfree_skb(skb);
}
+ cond_resched();
}
}

@@ -429,19 +430,21 @@ static int ipvlan_process_outbound(struct sk_buff *skb,
struct ethhdr *ethh = eth_hdr(skb);
int ret = NET_XMIT_DROP;

- /* In this mode we dont care about multicast and broadcast traffic */
- if (is_multicast_ether_addr(ethh->h_dest)) {
- pr_warn_ratelimited("Dropped {multi|broad}cast of type= [%x]\n",
- ntohs(skb->protocol));
- kfree_skb(skb);
- goto out;
- }
-
/* The ipvlan is a pseudo-L2 device, so the packets that we receive
* will have L2; which need to discarded and processed further
* in the net-ns of the main-device.
*/
if (skb_mac_header_was_set(skb)) {
+ /* In this mode we dont care about
+ * multicast and broadcast traffic */
+ if (is_multicast_ether_addr(ethh->h_dest)) {
+ pr_debug_ratelimited(
+ "Dropped {multi|broad}cast of type=[%x]\n",
+ ntohs(skb->protocol));
+ kfree_skb(skb);
+ goto out;
+ }
+
skb_pull(skb, sizeof(*ethh));
skb->mac_header = (typeof(skb->mac_header))~0U;
skb_reset_network_header(skb);
diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c
index ae02ce17c505..b4d5f53c97d3 100644
--- a/drivers/net/ipvlan/ipvlan_main.c
+++ b/drivers/net/ipvlan/ipvlan_main.c
@@ -145,7 +145,6 @@ static void ipvlan_uninit(struct net_device *dev)
static int ipvlan_open(struct net_device *dev)
{
struct ipvl_dev *ipvlan = netdev_priv(dev);
- struct net_device *phy_dev = ipvlan->phy_dev;
struct ipvl_addr *addr;

if (ipvlan->port->mode == IPVLAN_MODE_L3)
@@ -156,7 +155,7 @@ static int ipvlan_open(struct net_device *dev)
list_for_each_entry(addr, &ipvlan->addrs, anode)
ipvlan_ht_addr_add(ipvlan, addr);

- return dev_uc_add(phy_dev, phy_dev->dev_addr);
+ return 0;
}

static int ipvlan_stop(struct net_device *dev)
@@ -168,8 +167,6 @@ static int ipvlan_stop(struct net_device *dev)
dev_uc_unsync(phy_dev, dev);
dev_mc_unsync(phy_dev, dev);

- dev_uc_del(phy_dev, phy_dev->dev_addr);
-
list_for_each_entry(addr, &ipvlan->addrs, anode)
ipvlan_ht_addr_del(addr);

diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index bd49303f7db2..84767722065a 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -306,6 +306,8 @@ static void macvlan_process_broadcast(struct work_struct *w)
rcu_read_unlock();

kfree_skb(skb);
+
+ cond_resched();
}
}

diff --git a/drivers/net/slip/slhc.c b/drivers/net/slip/slhc.c
index ddceed3c5a4a..a516470da015 100644
--- a/drivers/net/slip/slhc.c
+++ b/drivers/net/slip/slhc.c
@@ -232,7 +232,7 @@ slhc_compress(struct slcompress *comp, unsigned char *icp, int isize,
register struct cstate *cs = lcs->next;
register unsigned long deltaS, deltaA;
register short changes = 0;
- int hlen;
+ int nlen, hlen;
unsigned char new_seq[16];
register unsigned char *cp = new_seq;
struct iphdr *ip;
@@ -248,6 +248,8 @@ slhc_compress(struct slcompress *comp, unsigned char *icp, int isize,
return isize;

ip = (struct iphdr *) icp;
+ if (ip->version != 4 || ip->ihl < 5)
+ return isize;

/* Bail if this packet isn't TCP, or is an IP fragment */
if (ip->protocol != IPPROTO_TCP || (ntohs(ip->frag_off) & 0x3fff)) {
@@ -258,10 +260,14 @@ slhc_compress(struct slcompress *comp, unsigned char *icp, int isize,
comp->sls_o_tcp++;
return isize;
}
- /* Extract TCP header */
+ nlen = ip->ihl * 4;
+ if (isize < nlen + sizeof(*th))
+ return isize;

- th = (struct tcphdr *)(((unsigned char *)ip) + ip->ihl*4);
- hlen = ip->ihl*4 + th->doff*4;
+ th = (struct tcphdr *)(icp + nlen);
+ if (th->doff < sizeof(struct tcphdr) / 4)
+ return isize;
+ hlen = nlen + th->doff * 4;

/* Bail if the TCP packet isn't `compressible' (i.e., ACK isn't set or
* some other control bit is set). Also uncompressible if
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index 285d376f53ef..e51fb7cb7728 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -2169,6 +2169,8 @@ team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
[TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
[TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
[TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
+ [TEAM_ATTR_OPTION_PORT_IFINDEX] = { .type = NLA_U32 },
+ [TEAM_ATTR_OPTION_ARRAY_INDEX] = { .type = NLA_U32 },
};

static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 23e299c86b81..27e9c089b2fc 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -3328,14 +3328,20 @@ static void r8153_init(struct r8152 *tp)
if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_BOOT_CTRL) &
AUTOLOAD_DONE)
break;
+
msleep(20);
+ if (test_bit(RTL8152_UNPLUG, &tp->flags))
+ break;
}

for (i = 0; i < 500; i++) {
ocp_data = ocp_reg_read(tp, OCP_PHY_STATUS) & PHY_STAT_MASK;
if (ocp_data == PHY_STAT_LAN_ON || ocp_data == PHY_STAT_PWRDN)
break;
+
msleep(20);
+ if (test_bit(RTL8152_UNPLUG, &tp->flags))
+ break;
}

usb_disable_lpm(tp->udev);
diff --git a/drivers/net/wireless/mwifiex/tdls.c b/drivers/net/wireless/mwifiex/tdls.c
index 9275f9c3f869..14ce8ead5941 100644
--- a/drivers/net/wireless/mwifiex/tdls.c
+++ b/drivers/net/wireless/mwifiex/tdls.c
@@ -910,59 +910,117 @@ void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,

switch (*pos) {
case WLAN_EID_SUPP_RATES:
+ if (pos[1] > 32)
+ return;
sta_ptr->tdls_cap.rates_len = pos[1];
for (i = 0; i < pos[1]; i++)
sta_ptr->tdls_cap.rates[i] = pos[i + 2];
break;

case WLAN_EID_EXT_SUPP_RATES:
+ if (pos[1] > 32)
+ return;
basic = sta_ptr->tdls_cap.rates_len;
+ if (pos[1] > 32 - basic)
+ return;
for (i = 0; i < pos[1]; i++)
sta_ptr->tdls_cap.rates[basic + i] = pos[i + 2];
sta_ptr->tdls_cap.rates_len += pos[1];
break;
case WLAN_EID_HT_CAPABILITY:
- memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos,
+ if (pos > end - sizeof(struct ieee80211_ht_cap) - 2)
+ return;
+ if (pos[1] != sizeof(struct ieee80211_ht_cap))
+ return;
+ /* copy the ie's value into ht_capb*/
+ memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos + 2,
sizeof(struct ieee80211_ht_cap));
sta_ptr->is_11n_enabled = 1;
break;
case WLAN_EID_HT_OPERATION:
- memcpy(&sta_ptr->tdls_cap.ht_oper, pos,
+ if (pos > end -
+ sizeof(struct ieee80211_ht_operation) - 2)
+ return;
+ if (pos[1] != sizeof(struct ieee80211_ht_operation))
+ return;
+ /* copy the ie's value into ht_oper*/
+ memcpy(&sta_ptr->tdls_cap.ht_oper, pos + 2,
sizeof(struct ieee80211_ht_operation));
break;
case WLAN_EID_BSS_COEX_2040:
+ if (pos > end - 3)
+ return;
+ if (pos[1] != 1)
+ return;
sta_ptr->tdls_cap.coex_2040 = pos[2];
break;
case WLAN_EID_EXT_CAPABILITY:
+ if (pos > end - sizeof(struct ieee_types_header))
+ return;
+ if (pos[1] < sizeof(struct ieee_types_header))
+ return;
+ if (pos[1] > 8)
+ return;
memcpy((u8 *)&sta_ptr->tdls_cap.extcap, pos,
sizeof(struct ieee_types_header) +
min_t(u8, pos[1], 8));
break;
case WLAN_EID_RSN:
+ if (pos > end - sizeof(struct ieee_types_header))
+ return;
+ if (pos[1] < sizeof(struct ieee_types_header))
+ return;
+ if (pos[1] > IEEE_MAX_IE_SIZE -
+ sizeof(struct ieee_types_header))
+ return;
memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos,
sizeof(struct ieee_types_header) +
min_t(u8, pos[1], IEEE_MAX_IE_SIZE -
sizeof(struct ieee_types_header)));
break;
case WLAN_EID_QOS_CAPA:
+ if (pos > end - 3)
+ return;
+ if (pos[1] != 1)
+ return;
sta_ptr->tdls_cap.qos_info = pos[2];
break;
case WLAN_EID_VHT_OPERATION:
- if (priv->adapter->is_hw_11ac_capable)
- memcpy(&sta_ptr->tdls_cap.vhtoper, pos,
+ if (priv->adapter->is_hw_11ac_capable) {
+ if (pos > end -
+ sizeof(struct ieee80211_vht_operation) - 2)
+ return;
+ if (pos[1] !=
+ sizeof(struct ieee80211_vht_operation))
+ return;
+ /* copy the ie's value into vhtoper*/
+ memcpy(&sta_ptr->tdls_cap.vhtoper, pos + 2,
sizeof(struct ieee80211_vht_operation));
+ }
break;
case WLAN_EID_VHT_CAPABILITY:
if (priv->adapter->is_hw_11ac_capable) {
- memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos,
+ if (pos > end -
+ sizeof(struct ieee80211_vht_cap) - 2)
+ return;
+ if (pos[1] != sizeof(struct ieee80211_vht_cap))
+ return;
+ /* copy the ie's value into vhtcap*/
+ memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos + 2,
sizeof(struct ieee80211_vht_cap));
sta_ptr->is_11ac_enabled = 1;
}
break;
case WLAN_EID_AID:
- if (priv->adapter->is_hw_11ac_capable)
+ if (priv->adapter->is_hw_11ac_capable) {
+ if (pos > end - 4)
+ return;
+ if (pos[1] != 2)
+ return;
sta_ptr->tdls_cap.aid =
le16_to_cpu(*(__le16 *)(pos + 2));
+ }
+ break;
default:
break;
}
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 063fdfcf8275..32226dd19932 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -1245,7 +1245,7 @@ static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry,
if (!(*opened & FILE_OPENED))
return finish_no_open(file, d);
dput(d);
- return 0;
+ return excl && (flags & O_CREAT) ? -EEXIST : 0;
}

BUG_ON(d != NULL);
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 6457023d8fac..3233e5ac9774 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -1041,8 +1041,8 @@ static bool jbd2_write_access_granted(handle_t *handle, struct buffer_head *bh,
/* For undo access buffer must have data copied */
if (undo && !jh->b_committed_data)
goto out;
- if (jh->b_transaction != handle->h_transaction &&
- jh->b_next_transaction != handle->h_transaction)
+ if (READ_ONCE(jh->b_transaction) != handle->h_transaction &&
+ READ_ONCE(jh->b_next_transaction) != handle->h_transaction)
goto out;
/*
* There are two reasons for the barrier here:
@@ -2458,8 +2458,8 @@ void __jbd2_journal_refile_buffer(struct journal_head *jh)
* our jh reference and thus __jbd2_journal_file_buffer() must not
* take a new one.
*/
- jh->b_transaction = jh->b_next_transaction;
- jh->b_next_transaction = NULL;
+ WRITE_ONCE(jh->b_transaction, jh->b_next_transaction);
+ WRITE_ONCE(jh->b_next_transaction, NULL);
if (buffer_freed(bh))
jlist = BJ_Forget;
else if (jh->b_modified)
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 2ac3d2527ad2..21e5fcbcb227 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -657,8 +657,6 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
goto out_label_free;
}

- array = kmap(page);
-
status = nfs_readdir_alloc_pages(pages, array_size);
if (status < 0)
goto out_release_array;
diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h
index 59160de702b6..99ae8ac65eca 100644
--- a/include/net/fib_rules.h
+++ b/include/net/fib_rules.h
@@ -85,6 +85,7 @@ struct fib_rules_ops {
[FRA_OIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
[FRA_PRIORITY] = { .type = NLA_U32 }, \
[FRA_FWMARK] = { .type = NLA_U32 }, \
+ [FRA_TUN_ID] = { .type = NLA_U64 }, \
[FRA_FWMASK] = { .type = NLA_U32 }, \
[FRA_TABLE] = { .type = NLA_U32 }, \
[FRA_SUPPRESS_PREFIXLEN] = { .type = NLA_U32 }, \
diff --git a/kernel/signal.c b/kernel/signal.c
index 7e4a4b199a11..90a94e54db09 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -373,27 +373,32 @@ __sigqueue_alloc(int sig, struct task_struct *t, gfp_t flags, int override_rlimi
{
struct sigqueue *q = NULL;
struct user_struct *user;
+ int sigpending;

/*
* Protect access to @t credentials. This can go away when all
* callers hold rcu read lock.
+ *
+ * NOTE! A pending signal will hold on to the user refcount,
+ * and we get/put the refcount only when the sigpending count
+ * changes from/to zero.
*/
rcu_read_lock();
- user = get_uid(__task_cred(t)->user);
- atomic_inc(&user->sigpending);
+ user = __task_cred(t)->user;
+ sigpending = atomic_inc_return(&user->sigpending);
+ if (sigpending == 1)
+ get_uid(user);
rcu_read_unlock();

- if (override_rlimit ||
- atomic_read(&user->sigpending) <=
- task_rlimit(t, RLIMIT_SIGPENDING)) {
+ if (override_rlimit || likely(sigpending <= task_rlimit(t, RLIMIT_SIGPENDING))) {
q = kmem_cache_alloc(sigqueue_cachep, flags);
} else {
print_dropped_signal(sig);
}

if (unlikely(q == NULL)) {
- atomic_dec(&user->sigpending);
- free_uid(user);
+ if (atomic_dec_and_test(&user->sigpending))
+ free_uid(user);
} else {
INIT_LIST_HEAD(&q->list);
q->flags = 0;
@@ -407,8 +412,8 @@ static void __sigqueue_free(struct sigqueue *q)
{
if (q->flags & SIGQUEUE_PREALLOC)
return;
- atomic_dec(&q->user->sigpending);
- free_uid(q->user);
+ if (atomic_dec_and_test(&q->user->sigpending))
+ free_uid(q->user);
kmem_cache_free(sigqueue_cachep, q);
}

diff --git a/mm/slub.c b/mm/slub.c
index 8f5dcb0ac24f..cb9069ccf67c 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2931,6 +2931,15 @@ int kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t size,
void *object = c->freelist;

if (unlikely(!object)) {
+ /*
+ * We may have removed an object from c->freelist using
+ * the fastpath in the previous iteration; in that case,
+ * c->tid has not been bumped yet.
+ * Since ___slab_alloc() may reenable interrupts while
+ * allocating memory, we should bump c->tid now.
+ */
+ c->tid = next_tid(c->tid);
+
/*
* Invoking slow path likely have side-effect
* of re-populating per CPU c->freelist
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 912d9c36fb1c..caea5bb38d4b 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -135,7 +135,7 @@ static void batadv_iv_ogm_orig_free(struct batadv_orig_node *orig_node)
* Returns 0 on success, a negative error code otherwise.
*/
static int batadv_iv_ogm_orig_add_if(struct batadv_orig_node *orig_node,
- int max_if_num)
+ unsigned int max_if_num)
{
void *data_ptr;
size_t old_size;
@@ -155,10 +155,8 @@ static int batadv_iv_ogm_orig_add_if(struct batadv_orig_node *orig_node,
orig_node->bat_iv.bcast_own = data_ptr;

data_ptr = kmalloc_array(max_if_num, sizeof(u8), GFP_ATOMIC);
- if (!data_ptr) {
- kfree(orig_node->bat_iv.bcast_own);
+ if (!data_ptr)
goto unlock;
- }

memcpy(data_ptr, orig_node->bat_iv.bcast_own_sum,
(max_if_num - 1) * sizeof(u8));
@@ -183,9 +181,11 @@ unlock:
* Returns 0 on success, a negative error code otherwise.
*/
static int batadv_iv_ogm_orig_del_if(struct batadv_orig_node *orig_node,
- int max_if_num, int del_if_num)
+ unsigned int max_if_num,
+ unsigned int del_if_num)
{
- int chunk_size, ret = -ENOMEM, if_offset;
+ int ret = -ENOMEM;
+ size_t chunk_size, if_offset;
void *data_ptr = NULL;

spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock);
@@ -203,8 +203,9 @@ static int batadv_iv_ogm_orig_del_if(struct batadv_orig_node *orig_node,
memcpy(data_ptr, orig_node->bat_iv.bcast_own, del_if_num * chunk_size);

/* copy second part */
+ if_offset = (del_if_num + 1) * chunk_size;
memcpy((char *)data_ptr + del_if_num * chunk_size,
- orig_node->bat_iv.bcast_own + ((del_if_num + 1) * chunk_size),
+ (uint8_t *)orig_node->bat_iv.bcast_own + if_offset,
(max_if_num - del_if_num) * chunk_size);

free_bcast_own:
@@ -252,7 +253,8 @@ static struct batadv_orig_node *
batadv_iv_ogm_orig_get(struct batadv_priv *bat_priv, const u8 *addr)
{
struct batadv_orig_node *orig_node;
- int size, hash_added;
+ int hash_added;
+ size_t size;

orig_node = batadv_orig_hash_find(bat_priv, addr);
if (orig_node)
@@ -314,14 +316,18 @@ static int batadv_iv_ogm_iface_enable(struct batadv_hard_iface *hard_iface)
unsigned char *ogm_buff;
u32 random_seqno;

+ mutex_lock(&hard_iface->bat_iv.ogm_buff_mutex);
+
/* randomize initial seqno to avoid collision */
get_random_bytes(&random_seqno, sizeof(random_seqno));
atomic_set(&hard_iface->bat_iv.ogm_seqno, random_seqno);

hard_iface->bat_iv.ogm_buff_len = BATADV_OGM_HLEN;
ogm_buff = kmalloc(hard_iface->bat_iv.ogm_buff_len, GFP_ATOMIC);
- if (!ogm_buff)
+ if (!ogm_buff) {
+ mutex_unlock(&hard_iface->bat_iv.ogm_buff_mutex);
return -ENOMEM;
+ }

hard_iface->bat_iv.ogm_buff = ogm_buff;

@@ -333,36 +339,60 @@ static int batadv_iv_ogm_iface_enable(struct batadv_hard_iface *hard_iface)
batadv_ogm_packet->reserved = 0;
batadv_ogm_packet->tq = BATADV_TQ_MAX_VALUE;

+ mutex_unlock(&hard_iface->bat_iv.ogm_buff_mutex);
+
return 0;
}

static void batadv_iv_ogm_iface_disable(struct batadv_hard_iface *hard_iface)
{
+ mutex_lock(&hard_iface->bat_iv.ogm_buff_mutex);
+
kfree(hard_iface->bat_iv.ogm_buff);
hard_iface->bat_iv.ogm_buff = NULL;
+
+ mutex_unlock(&hard_iface->bat_iv.ogm_buff_mutex);
}

static void batadv_iv_ogm_iface_update_mac(struct batadv_hard_iface *hard_iface)
{
struct batadv_ogm_packet *batadv_ogm_packet;
- unsigned char *ogm_buff = hard_iface->bat_iv.ogm_buff;
+ void *ogm_buff;

- batadv_ogm_packet = (struct batadv_ogm_packet *)ogm_buff;
+ mutex_lock(&hard_iface->bat_iv.ogm_buff_mutex);
+
+ ogm_buff = hard_iface->bat_iv.ogm_buff;
+ if (!ogm_buff)
+ goto unlock;
+
+ batadv_ogm_packet = ogm_buff;
ether_addr_copy(batadv_ogm_packet->orig,
hard_iface->net_dev->dev_addr);
ether_addr_copy(batadv_ogm_packet->prev_sender,
hard_iface->net_dev->dev_addr);
+
+unlock:
+ mutex_unlock(&hard_iface->bat_iv.ogm_buff_mutex);
}

static void
batadv_iv_ogm_primary_iface_set(struct batadv_hard_iface *hard_iface)
{
struct batadv_ogm_packet *batadv_ogm_packet;
- unsigned char *ogm_buff = hard_iface->bat_iv.ogm_buff;
+ void *ogm_buff;

- batadv_ogm_packet = (struct batadv_ogm_packet *)ogm_buff;
+ mutex_lock(&hard_iface->bat_iv.ogm_buff_mutex);
+
+ ogm_buff = hard_iface->bat_iv.ogm_buff;
+ if (!ogm_buff)
+ goto unlock;
+
+ batadv_ogm_packet = ogm_buff;
batadv_ogm_packet->flags = BATADV_PRIMARIES_FIRST_HOP;
batadv_ogm_packet->ttl = BATADV_TTL;
+
+unlock:
+ mutex_unlock(&hard_iface->bat_iv.ogm_buff_mutex);
}

/* when do we schedule our own ogm to be sent */
@@ -395,14 +425,19 @@ static u8 batadv_hop_penalty(u8 tq, const struct batadv_priv *bat_priv)
return new_tq;
}

-/* is there another aggregated packet here? */
-static bool batadv_iv_ogm_aggr_packet(int buff_pos, int packet_len,
- __be16 tvlv_len)
+static bool
+batadv_iv_ogm_aggr_packet(int buff_pos, int packet_len,
+ const struct batadv_ogm_packet *ogm_packet)
{
int next_buff_pos = 0;

- next_buff_pos += buff_pos + BATADV_OGM_HLEN;
- next_buff_pos += ntohs(tvlv_len);
+ /* check if there is enough space for the header */
+ next_buff_pos += buff_pos + sizeof(*ogm_packet);
+ if (next_buff_pos > packet_len)
+ return false;
+
+ /* check if there is enough space for the optional TVLV */
+ next_buff_pos += ntohs(ogm_packet->tvlv_len);

return (next_buff_pos <= packet_len) &&
(next_buff_pos <= BATADV_MAX_AGGREGATION_BYTES);
@@ -430,7 +465,7 @@ static void batadv_iv_ogm_send_to_if(struct batadv_forw_packet *forw_packet,

/* adjust all flags and log packets */
while (batadv_iv_ogm_aggr_packet(buff_pos, forw_packet->packet_len,
- batadv_ogm_packet->tvlv_len)) {
+ batadv_ogm_packet)) {
/* we might have aggregated direct link packets with an
* ordinary base packet
*/
@@ -871,7 +906,7 @@ batadv_iv_ogm_slide_own_bcast_window(struct batadv_hard_iface *hard_iface)
u32 i;
size_t word_index;
u8 *w;
- int if_num;
+ unsigned int if_num;

for (i = 0; i < hash->size; i++) {
head = &hash->table[i];
@@ -892,7 +927,11 @@ batadv_iv_ogm_slide_own_bcast_window(struct batadv_hard_iface *hard_iface)
}
}

-static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
+/**
+ * batadv_iv_ogm_schedule_buff() - schedule submission of hardif ogm buffer
+ * @hard_iface: interface whose ogm buffer should be transmitted
+ */
+static void batadv_iv_ogm_schedule_buff(struct batadv_hard_iface *hard_iface)
{
struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
unsigned char **ogm_buff = &hard_iface->bat_iv.ogm_buff;
@@ -903,6 +942,12 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
u16 tvlv_len = 0;
unsigned long send_time;

+ lockdep_assert_held(&hard_iface->bat_iv.ogm_buff_mutex);
+
+ /* interface already disabled by batadv_iv_ogm_iface_disable */
+ if (!*ogm_buff)
+ return;
+
primary_if = batadv_primary_if_get_selected(bat_priv);

if (hard_iface == primary_if) {
@@ -954,6 +999,17 @@ out:
batadv_hardif_free_ref(primary_if);
}

+static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
+{
+ if (hard_iface->if_status == BATADV_IF_NOT_IN_USE ||
+ hard_iface->if_status == BATADV_IF_TO_BE_REMOVED)
+ return;
+
+ mutex_lock(&hard_iface->bat_iv.ogm_buff_mutex);
+ batadv_iv_ogm_schedule_buff(hard_iface);
+ mutex_unlock(&hard_iface->bat_iv.ogm_buff_mutex);
+}
+
/**
* batadv_iv_ogm_orig_update - use OGM to update corresponding data in an
* originator
@@ -982,7 +1038,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
struct batadv_neigh_node *tmp_neigh_node = NULL;
struct batadv_neigh_node *router = NULL;
struct batadv_orig_node *orig_node_tmp;
- int if_num;
+ unsigned int if_num;
u8 sum_orig, sum_neigh;
u8 *neigh_addr;
u8 tq_avg;
@@ -1140,9 +1196,10 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
u8 total_count;
u8 orig_eq_count, neigh_rq_count, neigh_rq_inv, tq_own;
unsigned int neigh_rq_inv_cube, neigh_rq_max_cube;
- int tq_asym_penalty, inv_asym_penalty, if_num, ret = 0;
+ int if_num, ret = 0;
+ unsigned int tq_asym_penalty, inv_asym_penalty;
unsigned int combined_tq;
- int tq_iface_penalty;
+ unsigned int tq_iface_penalty;

/* find corresponding one hop neighbor */
rcu_read_lock();
@@ -1179,7 +1236,7 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
orig_node->last_seen = jiffies;

/* find packet count of corresponding one hop neighbor */
- spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock);
+ spin_lock_bh(&orig_neigh_node->bat_iv.ogm_cnt_lock);
if_num = if_incoming->if_num;
orig_eq_count = orig_neigh_node->bat_iv.bcast_own_sum[if_num];
neigh_ifinfo = batadv_neigh_ifinfo_new(neigh_node, if_outgoing);
@@ -1189,7 +1246,7 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
} else {
neigh_rq_count = 0;
}
- spin_unlock_bh(&orig_node->bat_iv.ogm_cnt_lock);
+ spin_unlock_bh(&orig_neigh_node->bat_iv.ogm_cnt_lock);

/* pay attention to not get a value bigger than 100 % */
if (orig_eq_count > neigh_rq_count)
@@ -1646,9 +1703,9 @@ static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset,

if (is_my_orig) {
unsigned long *word;
- int offset;
+ size_t offset;
s32 bit_pos;
- s16 if_num;
+ unsigned int if_num;
u8 *weight;

orig_neigh_node = batadv_iv_ogm_orig_get(bat_priv,
@@ -1748,7 +1805,7 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb,

/* unpack the aggregated packets and process them one by one */
while (batadv_iv_ogm_aggr_packet(ogm_offset, skb_headlen(skb),
- ogm_packet->tvlv_len)) {
+ ogm_packet)) {
batadv_iv_ogm_process(skb, ogm_offset, if_incoming);

ogm_offset += BATADV_OGM_HLEN;
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index c5208136e3fc..cea7fdeac5aa 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -129,7 +129,19 @@ batadv_backbone_gw_free_ref(struct batadv_bla_backbone_gw *backbone_gw)
/* finally deinitialize the claim */
static void batadv_claim_release(struct batadv_bla_claim *claim)
{
- batadv_backbone_gw_free_ref(claim->backbone_gw);
+ struct batadv_bla_backbone_gw *old_backbone_gw;
+
+ spin_lock_bh(&claim->backbone_lock);
+ old_backbone_gw = claim->backbone_gw;
+ claim->backbone_gw = NULL;
+ spin_unlock_bh(&claim->backbone_lock);
+
+ spin_lock_bh(&old_backbone_gw->crc_lock);
+ old_backbone_gw->crc ^= crc16(0, claim->addr, ETH_ALEN);
+ spin_unlock_bh(&old_backbone_gw->crc_lock);
+
+ batadv_backbone_gw_free_ref(old_backbone_gw);
+
kfree_rcu(claim, rcu);
}

@@ -256,7 +268,9 @@ batadv_bla_del_backbone_claims(struct batadv_bla_backbone_gw *backbone_gw)
}

/* all claims gone, initialize CRC */
+ spin_lock_bh(&backbone_gw->crc_lock);
backbone_gw->crc = BATADV_BLA_CRC_INIT;
+ spin_unlock_bh(&backbone_gw->crc_lock);
}

/**
@@ -352,9 +366,12 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, u8 *mac,
break;
}

- if (vid & BATADV_VLAN_HAS_TAG)
+ if (vid & BATADV_VLAN_HAS_TAG) {
skb = vlan_insert_tag(skb, htons(ETH_P_8021Q),
vid & VLAN_VID_MASK);
+ if (!skb)
+ goto out;
+ }

skb_reset_mac_header(skb);
skb->protocol = eth_type_trans(skb, soft_iface);
@@ -404,6 +421,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, u8 *orig,
entry->lasttime = jiffies;
entry->crc = BATADV_BLA_CRC_INIT;
entry->bat_priv = bat_priv;
+ spin_lock_init(&entry->crc_lock);
atomic_set(&entry->request_sent, 0);
atomic_set(&entry->wait_periods, 0);
ether_addr_copy(entry->orig, orig);
@@ -553,7 +571,9 @@ static void batadv_bla_send_announce(struct batadv_priv *bat_priv,
__be16 crc;

memcpy(mac, batadv_announce_mac, 4);
+ spin_lock_bh(&backbone_gw->crc_lock);
crc = htons(backbone_gw->crc);
+ spin_unlock_bh(&backbone_gw->crc_lock);
memcpy(&mac[4], &crc, 2);

batadv_bla_send_claim(bat_priv, mac, backbone_gw->vid,
@@ -571,8 +591,10 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
const u8 *mac, const unsigned short vid,
struct batadv_bla_backbone_gw *backbone_gw)
{
+ struct batadv_bla_backbone_gw *old_backbone_gw;
struct batadv_bla_claim *claim;
struct batadv_bla_claim search_claim;
+ bool remove_crc = false;
int hash_added;

ether_addr_copy(search_claim.addr, mac);
@@ -586,8 +608,10 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
return;

ether_addr_copy(claim->addr, mac);
+ spin_lock_init(&claim->backbone_lock);
claim->vid = vid;
claim->lasttime = jiffies;
+ atomic_inc(&backbone_gw->refcount);
claim->backbone_gw = backbone_gw;

atomic_set(&claim->refcount, 2);
@@ -614,20 +638,55 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
"bla_add_claim(): changing ownership for %pM, vid %d\n",
mac, BATADV_PRINT_VID(vid));

- claim->backbone_gw->crc ^= crc16(0, claim->addr, ETH_ALEN);
- batadv_backbone_gw_free_ref(claim->backbone_gw);
+ remove_crc = true;
}
- /* set (new) backbone gw */
+
+ /* replace backbone_gw atomically and adjust reference counters */
+ spin_lock_bh(&claim->backbone_lock);
+ old_backbone_gw = claim->backbone_gw;
atomic_inc(&backbone_gw->refcount);
claim->backbone_gw = backbone_gw;
+ spin_unlock_bh(&claim->backbone_lock);
+
+ if (remove_crc) {
+ /* remove claim address from old backbone_gw */
+ spin_lock_bh(&old_backbone_gw->crc_lock);
+ old_backbone_gw->crc ^= crc16(0, claim->addr, ETH_ALEN);
+ spin_unlock_bh(&old_backbone_gw->crc_lock);
+ }

+ batadv_backbone_gw_free_ref(old_backbone_gw);
+
+ /* add claim address to new backbone_gw */
+ spin_lock_bh(&backbone_gw->crc_lock);
backbone_gw->crc ^= crc16(0, claim->addr, ETH_ALEN);
+ spin_unlock_bh(&backbone_gw->crc_lock);
backbone_gw->lasttime = jiffies;

claim_free_ref:
batadv_claim_free_ref(claim);
}

+/**
+ * batadv_bla_claim_get_backbone_gw - Get valid reference for backbone_gw of
+ * claim
+ * @claim: claim whose backbone_gw should be returned
+ *
+ * Return: valid reference to claim::backbone_gw
+ */
+static struct batadv_bla_backbone_gw *
+batadv_bla_claim_get_backbone_gw(struct batadv_bla_claim *claim)
+{
+ struct batadv_bla_backbone_gw *backbone_gw;
+
+ spin_lock_bh(&claim->backbone_lock);
+ backbone_gw = claim->backbone_gw;
+ atomic_inc(&backbone_gw->refcount);
+ spin_unlock_bh(&claim->backbone_lock);
+
+ return backbone_gw;
+}
+
/* Delete a claim from the claim hash which has the
* given mac address and vid.
*/
@@ -635,6 +694,8 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
const u8 *mac, const unsigned short vid)
{
struct batadv_bla_claim search_claim, *claim;
+ struct batadv_bla_claim *claim_removed_entry;
+ struct hlist_node *claim_removed_node;

ether_addr_copy(search_claim.addr, mac);
search_claim.vid = vid;
@@ -645,12 +706,18 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla_del_claim(): %pM, vid %d\n",
mac, BATADV_PRINT_VID(vid));

- batadv_hash_remove(bat_priv->bla.claim_hash, batadv_compare_claim,
- batadv_choose_claim, claim);
- batadv_claim_free_ref(claim); /* reference from the hash is gone */
+ claim_removed_node = batadv_hash_remove(bat_priv->bla.claim_hash,
+ batadv_compare_claim,
+ batadv_choose_claim, claim);
+ if (!claim_removed_node)
+ goto free_claim;

- claim->backbone_gw->crc ^= crc16(0, claim->addr, ETH_ALEN);
+ /* reference from the hash is gone */
+ claim_removed_entry = hlist_entry(claim_removed_node,
+ struct batadv_bla_claim, hash_entry);
+ batadv_claim_free_ref(claim_removed_entry);

+free_claim:
/* don't need the reference from hash_find() anymore */
batadv_claim_free_ref(claim);
}
@@ -660,7 +727,7 @@ static int batadv_handle_announce(struct batadv_priv *bat_priv, u8 *an_addr,
u8 *backbone_addr, unsigned short vid)
{
struct batadv_bla_backbone_gw *backbone_gw;
- u16 crc;
+ u16 backbone_crc, crc;

if (memcmp(an_addr, batadv_announce_mac, 4) != 0)
return 0;
@@ -679,12 +746,16 @@ static int batadv_handle_announce(struct batadv_priv *bat_priv, u8 *an_addr,
"handle_announce(): ANNOUNCE vid %d (sent by %pM)... CRC = %#.4x\n",
BATADV_PRINT_VID(vid), backbone_gw->orig, crc);

- if (backbone_gw->crc != crc) {
+ spin_lock_bh(&backbone_gw->crc_lock);
+ backbone_crc = backbone_gw->crc;
+ spin_unlock_bh(&backbone_gw->crc_lock);
+
+ if (backbone_crc != crc) {
batadv_dbg(BATADV_DBG_BLA, backbone_gw->bat_priv,
"handle_announce(): CRC FAILED for %pM/%d (my = %#.4x, sent = %#.4x)\n",
backbone_gw->orig,
BATADV_PRINT_VID(backbone_gw->vid),
- backbone_gw->crc, crc);
+ backbone_crc, crc);

batadv_bla_send_request(backbone_gw);
} else {
@@ -1056,6 +1127,7 @@ static void batadv_bla_purge_claims(struct batadv_priv *bat_priv,
struct batadv_hard_iface *primary_if,
int now)
{
+ struct batadv_bla_backbone_gw *backbone_gw;
struct batadv_bla_claim *claim;
struct hlist_head *head;
struct batadv_hashtable *hash;
@@ -1070,14 +1142,17 @@ static void batadv_bla_purge_claims(struct batadv_priv *bat_priv,

rcu_read_lock();
hlist_for_each_entry_rcu(claim, head, hash_entry) {
+ backbone_gw = batadv_bla_claim_get_backbone_gw(claim);
if (now)
goto purge_now;
- if (!batadv_compare_eth(claim->backbone_gw->orig,
+
+ if (!batadv_compare_eth(backbone_gw->orig,
primary_if->net_dev->dev_addr))
- continue;
+ goto skip;
+
if (!batadv_has_timed_out(claim->lasttime,
BATADV_BLA_CLAIM_TIMEOUT))
- continue;
+ goto skip;

batadv_dbg(BATADV_DBG_BLA, bat_priv,
"bla_purge_claims(): %pM, vid %d, time out\n",
@@ -1085,8 +1160,10 @@ static void batadv_bla_purge_claims(struct batadv_priv *bat_priv,

purge_now:
batadv_handle_unclaim(bat_priv, primary_if,
- claim->backbone_gw->orig,
+ backbone_gw->orig,
claim->addr, claim->vid);
+skip:
+ batadv_backbone_gw_free_ref(backbone_gw);
}
rcu_read_unlock();
}
@@ -1470,9 +1547,11 @@ void batadv_bla_free(struct batadv_priv *bat_priv)
int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
unsigned short vid, bool is_bcast)
{
+ struct batadv_bla_backbone_gw *backbone_gw;
struct ethhdr *ethhdr;
struct batadv_bla_claim search_claim, *claim = NULL;
struct batadv_hard_iface *primary_if;
+ bool own_claim;
int ret;

ethhdr = eth_hdr(skb);
@@ -1504,8 +1583,12 @@ int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
}

/* if it is our own claim ... */
- if (batadv_compare_eth(claim->backbone_gw->orig,
- primary_if->net_dev->dev_addr)) {
+ backbone_gw = batadv_bla_claim_get_backbone_gw(claim);
+ own_claim = batadv_compare_eth(backbone_gw->orig,
+ primary_if->net_dev->dev_addr);
+ batadv_backbone_gw_free_ref(backbone_gw);
+
+ if (own_claim) {
/* ... allow it in any case */
claim->lasttime = jiffies;
goto allow;
@@ -1568,7 +1651,9 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
{
struct ethhdr *ethhdr;
struct batadv_bla_claim search_claim, *claim = NULL;
+ struct batadv_bla_backbone_gw *backbone_gw;
struct batadv_hard_iface *primary_if;
+ bool client_roamed;
int ret = 0;

primary_if = batadv_primary_if_get_selected(bat_priv);
@@ -1598,8 +1683,12 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
goto allow;

/* check if we are responsible. */
- if (batadv_compare_eth(claim->backbone_gw->orig,
- primary_if->net_dev->dev_addr)) {
+ backbone_gw = batadv_bla_claim_get_backbone_gw(claim);
+ client_roamed = batadv_compare_eth(backbone_gw->orig,
+ primary_if->net_dev->dev_addr);
+ batadv_backbone_gw_free_ref(backbone_gw);
+
+ if (client_roamed) {
/* if yes, the client has roamed and we have
* to unclaim it.
*/
@@ -1652,9 +1741,11 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)
struct net_device *net_dev = (struct net_device *)seq->private;
struct batadv_priv *bat_priv = netdev_priv(net_dev);
struct batadv_hashtable *hash = bat_priv->bla.claim_hash;
+ struct batadv_bla_backbone_gw *backbone_gw;
struct batadv_bla_claim *claim;
struct batadv_hard_iface *primary_if;
struct hlist_head *head;
+ u16 backbone_crc;
u32 i;
bool is_own;
u8 *primary_addr;
@@ -1675,13 +1766,21 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)

rcu_read_lock();
hlist_for_each_entry_rcu(claim, head, hash_entry) {
- is_own = batadv_compare_eth(claim->backbone_gw->orig,
+ backbone_gw = batadv_bla_claim_get_backbone_gw(claim);
+
+ is_own = batadv_compare_eth(backbone_gw->orig,
primary_addr);
+
+ spin_lock_bh(&backbone_gw->crc_lock);
+ backbone_crc = backbone_gw->crc;
+ spin_unlock_bh(&backbone_gw->crc_lock);
seq_printf(seq, " * %pM on %5d by %pM [%c] (%#.4x)\n",
claim->addr, BATADV_PRINT_VID(claim->vid),
- claim->backbone_gw->orig,
+ backbone_gw->orig,
(is_own ? 'x' : ' '),
- claim->backbone_gw->crc);
+ backbone_crc);
+
+ batadv_backbone_gw_free_ref(backbone_gw);
}
rcu_read_unlock();
}
@@ -1700,6 +1799,7 @@ int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
struct batadv_hard_iface *primary_if;
struct hlist_head *head;
int secs, msecs;
+ u16 backbone_crc;
u32 i;
bool is_own;
u8 *primary_addr;
@@ -1730,10 +1830,14 @@ int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
if (is_own)
continue;

+ spin_lock_bh(&backbone_gw->crc_lock);
+ backbone_crc = backbone_gw->crc;
+ spin_unlock_bh(&backbone_gw->crc_lock);
+
seq_printf(seq, " * %pM on %5d %4i.%03is (%#.4x)\n",
backbone_gw->orig,
BATADV_PRINT_VID(backbone_gw->vid), secs,
- msecs, backbone_gw->crc);
+ msecs, backbone_crc);
}
rcu_read_unlock();
}
diff --git a/net/batman-adv/debugfs.c b/net/batman-adv/debugfs.c
index c4c1e8030ba0..b2ef03a3a2d4 100644
--- a/net/batman-adv/debugfs.c
+++ b/net/batman-adv/debugfs.c
@@ -19,6 +19,7 @@
#include "main.h"

#include <linux/compiler.h>
+#include <linux/dcache.h>
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/errno.h>
@@ -506,6 +507,25 @@ out:
return -ENOMEM;
}

+/**
+ * batadv_debugfs_rename_hardif() - Fix debugfs path for renamed hardif
+ * @hard_iface: hard interface which was renamed
+ */
+void batadv_debugfs_rename_hardif(struct batadv_hard_iface *hard_iface)
+{
+ const char *name = hard_iface->net_dev->name;
+ struct dentry *dir;
+ struct dentry *d;
+
+ dir = hard_iface->debug_dir;
+ if (!dir)
+ return;
+
+ d = debugfs_rename(dir->d_parent, dir, dir->d_parent, name);
+ if (!d)
+ pr_err("Can't rename debugfs dir to %s\n", name);
+}
+
/**
* batadv_debugfs_del_hardif - delete the base directory for a hard interface
* in debugfs.
@@ -561,6 +581,26 @@ out:
return -ENOMEM;
}

+/**
+ * batadv_debugfs_rename_meshif() - Fix debugfs path for renamed softif
+ * @dev: net_device which was renamed
+ */
+void batadv_debugfs_rename_meshif(struct net_device *dev)
+{
+ struct batadv_priv *bat_priv = netdev_priv(dev);
+ const char *name = dev->name;
+ struct dentry *dir;
+ struct dentry *d;
+
+ dir = bat_priv->debug_dir;
+ if (!dir)
+ return;
+
+ d = debugfs_rename(dir->d_parent, dir, dir->d_parent, name);
+ if (!d)
+ pr_err("Can't rename debugfs dir to %s\n", name);
+}
+
void batadv_debugfs_del_meshif(struct net_device *dev)
{
struct batadv_priv *bat_priv = netdev_priv(dev);
diff --git a/net/batman-adv/debugfs.h b/net/batman-adv/debugfs.h
index 80ab8d6f0ab3..347f793a18b2 100644
--- a/net/batman-adv/debugfs.h
+++ b/net/batman-adv/debugfs.h
@@ -31,8 +31,10 @@ struct net_device;
void batadv_debugfs_init(void);
void batadv_debugfs_destroy(void);
int batadv_debugfs_add_meshif(struct net_device *dev);
+void batadv_debugfs_rename_meshif(struct net_device *dev);
void batadv_debugfs_del_meshif(struct net_device *dev);
int batadv_debugfs_add_hardif(struct batadv_hard_iface *hard_iface);
+void batadv_debugfs_rename_hardif(struct batadv_hard_iface *hard_iface);
void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface);

#else
@@ -50,6 +52,10 @@ static inline int batadv_debugfs_add_meshif(struct net_device *dev)
return 0;
}

+static inline void batadv_debugfs_rename_meshif(struct net_device *dev)
+{
+}
+
static inline void batadv_debugfs_del_meshif(struct net_device *dev)
{
}
@@ -60,6 +66,11 @@ int batadv_debugfs_add_hardif(struct batadv_hard_iface *hard_iface)
return 0;
}

+static inline
+void batadv_debugfs_rename_hardif(struct batadv_hard_iface *hard_iface)
+{
+}
+
static inline
void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface)
{
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 76808c5e8183..769683da8d9d 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -993,15 +993,19 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
if (!skb_new)
goto out;

- if (vid & BATADV_VLAN_HAS_TAG)
+ if (vid & BATADV_VLAN_HAS_TAG) {
skb_new = vlan_insert_tag(skb_new, htons(ETH_P_8021Q),
vid & VLAN_VID_MASK);
+ if (!skb_new)
+ goto out;
+ }

skb_reset_mac_header(skb_new);
skb_new->protocol = eth_type_trans(skb_new,
bat_priv->soft_iface);
- bat_priv->stats.rx_packets++;
- bat_priv->stats.rx_bytes += skb->len + ETH_HLEN + hdr_size;
+ batadv_inc_counter(bat_priv, BATADV_CNT_RX);
+ batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES,
+ skb->len + ETH_HLEN + hdr_size);
bat_priv->soft_iface->last_rx = jiffies;

netif_rx(skb_new);
@@ -1073,9 +1077,12 @@ bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
*/
skb_reset_mac_header(skb_new);

- if (vid & BATADV_VLAN_HAS_TAG)
+ if (vid & BATADV_VLAN_HAS_TAG) {
skb_new = vlan_insert_tag(skb_new, htons(ETH_P_8021Q),
vid & VLAN_VID_MASK);
+ if (!skb_new)
+ goto out;
+ }

/* To preserve backwards compatibility, the node has choose the outgoing
* format based on the incoming request packet type. The assumption is
diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c
index d50c3b003dc9..9751b207b01f 100644
--- a/net/batman-adv/fragmentation.c
+++ b/net/batman-adv/fragmentation.c
@@ -233,8 +233,10 @@ err_unlock:
spin_unlock_bh(&chain->lock);

err:
- if (!ret)
+ if (!ret) {
kfree(frag_entry_new);
+ kfree_skb(skb);
+ }

return ret;
}
@@ -329,9 +331,9 @@ bool batadv_frag_skb_buffer(struct sk_buff **skb,
goto out_err;

out:
- *skb = skb_out;
ret = true;
out_err:
+ *skb = skb_out;
return ret;
}

@@ -478,6 +480,10 @@ bool batadv_frag_send_packet(struct sk_buff *skb,

/* Eat and send fragments from the tail of skb */
while (skb->len > max_fragment_size) {
+ /* The initial check in this function should cover this case */
+ if (frag_header.no == BATADV_FRAG_MAX_FRAGMENTS - 1)
+ goto out_err;
+
skb_fragment = batadv_frag_create(skb, &frag_header, mtu);
if (!skb_fragment)
goto out_err;
@@ -488,10 +494,6 @@ bool batadv_frag_send_packet(struct sk_buff *skb,
batadv_send_skb_packet(skb_fragment, neigh_node->if_incoming,
neigh_node->addr);
frag_header.no++;
-
- /* The initial check in this function should cover this case */
- if (frag_header.no == BATADV_FRAG_MAX_FRAGMENTS - 1)
- goto out_err;
}

/* Make room for the fragment header. */
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index 6abfba1e227f..a88b529b7ca0 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -29,6 +29,7 @@
#include <linux/ipv6.h>
#include <linux/kernel.h>
#include <linux/list.h>
+#include <linux/lockdep.h>
#include <linux/netdevice.h>
#include <linux/rculist.h>
#include <linux/rcupdate.h>
@@ -413,6 +414,9 @@ out:
* @bat_priv: the bat priv with all the soft interface information
* @orig_node: originator announcing gateway capabilities
* @gateway: announced bandwidth information
+ *
+ * Has to be called with the appropriate locks being acquired
+ * (gw.list_lock).
*/
static void batadv_gw_node_add(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node,
@@ -420,6 +424,8 @@ static void batadv_gw_node_add(struct batadv_priv *bat_priv,
{
struct batadv_gw_node *gw_node;

+ lockdep_assert_held(&bat_priv->gw.list_lock);
+
if (gateway->bandwidth_down == 0)
return;

@@ -438,9 +444,7 @@ static void batadv_gw_node_add(struct batadv_priv *bat_priv,
gw_node->bandwidth_up = ntohl(gateway->bandwidth_up);
atomic_set(&gw_node->refcount, 1);

- spin_lock_bh(&bat_priv->gw.list_lock);
hlist_add_head_rcu(&gw_node->list, &bat_priv->gw.list);
- spin_unlock_bh(&bat_priv->gw.list_lock);

batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
"Found new gateway %pM -> gw bandwidth: %u.%u/%u.%u MBit\n",
@@ -493,11 +497,14 @@ void batadv_gw_node_update(struct batadv_priv *bat_priv,
{
struct batadv_gw_node *gw_node, *curr_gw = NULL;

+ spin_lock_bh(&bat_priv->gw.list_lock);
gw_node = batadv_gw_node_get(bat_priv, orig_node);
if (!gw_node) {
batadv_gw_node_add(bat_priv, orig_node, gateway);
+ spin_unlock_bh(&bat_priv->gw.list_lock);
goto out;
}
+ spin_unlock_bh(&bat_priv->gw.list_lock);

if ((gw_node->bandwidth_down == ntohl(gateway->bandwidth_down)) &&
(gw_node->bandwidth_up == ntohl(gateway->bandwidth_up)))
@@ -527,11 +534,12 @@ void batadv_gw_node_update(struct batadv_priv *bat_priv,
* gets dereferenced.
*/
spin_lock_bh(&bat_priv->gw.list_lock);
- hlist_del_init_rcu(&gw_node->list);
+ if (!hlist_unhashed(&gw_node->list)) {
+ hlist_del_init_rcu(&gw_node->list);
+ batadv_gw_node_free_ref(gw_node);
+ }
spin_unlock_bh(&bat_priv->gw.list_lock);

- batadv_gw_node_free_ref(gw_node);
-
curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
if (gw_node == curr_gw)
batadv_gw_reselect(bat_priv);
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 3c8d8142e8c6..c59bbc327763 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -26,6 +26,7 @@
#include <linux/if.h>
#include <linux/kernel.h>
#include <linux/list.h>
+#include <linux/mutex.h>
#include <linux/netdevice.h>
#include <linux/printk.h>
#include <linux/rculist.h>
@@ -45,13 +46,16 @@
#include "sysfs.h"
#include "translation-table.h"

-void batadv_hardif_free_rcu(struct rcu_head *rcu)
+/**
+ * batadv_hardif_release - release hard interface from lists and queue for
+ * free after rcu grace period
+ * @hard_iface: the hard interface to free
+ */
+void batadv_hardif_release(struct batadv_hard_iface *hard_iface)
{
- struct batadv_hard_iface *hard_iface;
-
- hard_iface = container_of(rcu, struct batadv_hard_iface, rcu);
dev_put(hard_iface->net_dev);
- kfree(hard_iface);
+
+ kfree_rcu(hard_iface, rcu);
}

struct batadv_hard_iface *
@@ -73,6 +77,28 @@ out:
return hard_iface;
}

+/**
+ * batadv_mutual_parents - check if two devices are each others parent
+ * @dev1: 1st net_device
+ * @dev2: 2nd net_device
+ *
+ * veth devices come in pairs and each is the parent of the other!
+ *
+ * Return: true if the devices are each others parent, otherwise false
+ */
+static bool batadv_mutual_parents(const struct net_device *dev1,
+ const struct net_device *dev2)
+{
+ int dev1_parent_iflink = dev_get_iflink(dev1);
+ int dev2_parent_iflink = dev_get_iflink(dev2);
+
+ if (!dev1_parent_iflink || !dev2_parent_iflink)
+ return false;
+
+ return (dev1_parent_iflink == dev2->ifindex) &&
+ (dev2_parent_iflink == dev1->ifindex);
+}
+
/**
* batadv_is_on_batman_iface - check if a device is a batman iface descendant
* @net_dev: the device to check
@@ -108,6 +134,9 @@ static bool batadv_is_on_batman_iface(const struct net_device *net_dev)
return false;
}

+ if (batadv_mutual_parents(net_dev, parent_dev))
+ return false;
+
ret = batadv_is_on_batman_iface(parent_dev);

return ret;
@@ -465,6 +494,11 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface,
hard_iface->soft_iface = soft_iface;
bat_priv = netdev_priv(hard_iface->soft_iface);

+ if (bat_priv->num_ifaces >= UINT_MAX) {
+ ret = -ENOSPC;
+ goto err_dev;
+ }
+
ret = netdev_master_upper_dev_link(hard_iface->net_dev, soft_iface);
if (ret)
goto err_dev;
@@ -537,8 +571,7 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface,
struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
struct batadv_hard_iface *primary_if = NULL;

- if (hard_iface->if_status == BATADV_IF_ACTIVE)
- batadv_hardif_deactivate_interface(hard_iface);
+ batadv_hardif_deactivate_interface(hard_iface);

if (hard_iface->if_status != BATADV_IF_INACTIVE)
goto out;
@@ -573,7 +606,7 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface,
batadv_hardif_recalc_extra_skbroom(hard_iface->soft_iface);

/* nobody uses this interface anymore */
- if (!bat_priv->num_ifaces) {
+ if (bat_priv->num_ifaces == 0) {
batadv_gw_check_client_stop(bat_priv);

if (autodel == BATADV_IF_CLEANUP_AUTO)
@@ -629,7 +662,7 @@ batadv_hardif_add_interface(struct net_device *net_dev)
if (ret)
goto free_if;

- hard_iface->if_num = -1;
+ hard_iface->if_num = 0;
hard_iface->net_dev = net_dev;
hard_iface->soft_iface = NULL;
hard_iface->if_status = BATADV_IF_NOT_IN_USE;
@@ -639,6 +672,7 @@ batadv_hardif_add_interface(struct net_device *net_dev)
goto free_sysfs;

INIT_LIST_HEAD(&hard_iface->list);
+ mutex_init(&hard_iface->bat_iv.ogm_buff_mutex);
INIT_WORK(&hard_iface->cleanup_work,
batadv_hardif_remove_interface_finish);

@@ -693,6 +727,32 @@ void batadv_hardif_remove_interfaces(void)
rtnl_unlock();
}

+/**
+ * batadv_hard_if_event_softif() - Handle events for soft interfaces
+ * @event: NETDEV_* event to handle
+ * @net_dev: net_device which generated an event
+ *
+ * Return: NOTIFY_* result
+ */
+static int batadv_hard_if_event_softif(unsigned long event,
+ struct net_device *net_dev)
+{
+ struct batadv_priv *bat_priv;
+
+ switch (event) {
+ case NETDEV_REGISTER:
+ batadv_sysfs_add_meshif(net_dev);
+ bat_priv = netdev_priv(net_dev);
+ batadv_softif_create_vlan(bat_priv, BATADV_NO_FLAGS);
+ break;
+ case NETDEV_CHANGENAME:
+ batadv_debugfs_rename_meshif(net_dev);
+ break;
+ }
+
+ return NOTIFY_DONE;
+}
+
static int batadv_hard_if_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
@@ -701,12 +761,8 @@ static int batadv_hard_if_event(struct notifier_block *this,
struct batadv_hard_iface *primary_if = NULL;
struct batadv_priv *bat_priv;

- if (batadv_softif_is_valid(net_dev) && event == NETDEV_REGISTER) {
- batadv_sysfs_add_meshif(net_dev);
- bat_priv = netdev_priv(net_dev);
- batadv_softif_create_vlan(bat_priv, BATADV_NO_FLAGS);
- return NOTIFY_DONE;
- }
+ if (batadv_softif_is_valid(net_dev))
+ return batadv_hard_if_event_softif(event, net_dev);

hard_iface = batadv_hardif_get_by_netdev(net_dev);
if (!hard_iface && event == NETDEV_REGISTER)
@@ -748,6 +804,9 @@ static int batadv_hard_if_event(struct notifier_block *this,
if (hard_iface == primary_if)
batadv_primary_if_update_addr(bat_priv, NULL);
break;
+ case NETDEV_CHANGENAME:
+ batadv_debugfs_rename_hardif(hard_iface);
+ break;
default:
break;
}
diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h
index 7b12ea8ea29d..4d74c0415911 100644
--- a/net/batman-adv/hard-interface.h
+++ b/net/batman-adv/hard-interface.h
@@ -61,18 +61,18 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface,
void batadv_hardif_remove_interfaces(void);
int batadv_hardif_min_mtu(struct net_device *soft_iface);
void batadv_update_min_mtu(struct net_device *soft_iface);
-void batadv_hardif_free_rcu(struct rcu_head *rcu);
+void batadv_hardif_release(struct batadv_hard_iface *hard_iface);

/**
* batadv_hardif_free_ref - decrement the hard interface refcounter and
- * possibly free it
+ * possibly release it
* @hard_iface: the hard interface to free
*/
static inline void
batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface)
{
if (atomic_dec_and_test(&hard_iface->refcount))
- call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu);
+ batadv_hardif_release(hard_iface);
}

static inline struct batadv_hard_iface *
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index d7f17c1aa4a4..2bdbaff3279b 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -1079,15 +1079,20 @@ void batadv_tvlv_handler_register(struct batadv_priv *bat_priv,
{
struct batadv_tvlv_handler *tvlv_handler;

+ spin_lock_bh(&bat_priv->tvlv.handler_list_lock);
+
tvlv_handler = batadv_tvlv_handler_get(bat_priv, type, version);
if (tvlv_handler) {
+ spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);
batadv_tvlv_handler_free_ref(tvlv_handler);
return;
}

tvlv_handler = kzalloc(sizeof(*tvlv_handler), GFP_ATOMIC);
- if (!tvlv_handler)
+ if (!tvlv_handler) {
+ spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);
return;
+ }

tvlv_handler->ogm_handler = optr;
tvlv_handler->unicast_handler = uptr;
@@ -1097,7 +1102,6 @@ void batadv_tvlv_handler_register(struct batadv_priv *bat_priv,
atomic_set(&tvlv_handler->refcount, 1);
INIT_HLIST_NODE(&tvlv_handler->list);

- spin_lock_bh(&bat_priv->tvlv.handler_list_lock);
hlist_add_head_rcu(&tvlv_handler->list, &bat_priv->tvlv.handler_list);
spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);
}
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index d0956f726547..86c69208da2b 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -828,19 +828,29 @@ static struct batadv_nc_node
spinlock_t *lock; /* Used to lock list selected by "int in_coding" */
struct list_head *list;

+ /* Select ingoing or outgoing coding node */
+ if (in_coding) {
+ lock = &orig_neigh_node->in_coding_list_lock;
+ list = &orig_neigh_node->in_coding_list;
+ } else {
+ lock = &orig_neigh_node->out_coding_list_lock;
+ list = &orig_neigh_node->out_coding_list;
+ }
+
+ spin_lock_bh(lock);
+
/* Check if nc_node is already added */
nc_node = batadv_nc_find_nc_node(orig_node, orig_neigh_node, in_coding);

/* Node found */
if (nc_node)
- return nc_node;
+ goto unlock;

nc_node = kzalloc(sizeof(*nc_node), GFP_ATOMIC);
if (!nc_node)
- return NULL;
+ goto unlock;

- if (!atomic_inc_not_zero(&orig_neigh_node->refcount))
- goto free;
+ atomic_inc(&orig_neigh_node->refcount);

/* Initialize nc_node */
INIT_LIST_HEAD(&nc_node->list);
@@ -848,28 +858,15 @@ static struct batadv_nc_node
nc_node->orig_node = orig_neigh_node;
atomic_set(&nc_node->refcount, 2);

- /* Select ingoing or outgoing coding node */
- if (in_coding) {
- lock = &orig_neigh_node->in_coding_list_lock;
- list = &orig_neigh_node->in_coding_list;
- } else {
- lock = &orig_neigh_node->out_coding_list_lock;
- list = &orig_neigh_node->out_coding_list;
- }
-
batadv_dbg(BATADV_DBG_NC, bat_priv, "Adding nc_node %pM -> %pM\n",
nc_node->addr, nc_node->orig_node->orig);

/* Add nc_node to orig_node */
- spin_lock_bh(lock);
list_add_tail_rcu(&nc_node->list, list);
+unlock:
spin_unlock_bh(lock);

return nc_node;
-
-free:
- kfree(nc_node);
- return NULL;
}

/**
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 6282f021ddfb..b3013fbc417e 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -462,6 +462,8 @@ batadv_neigh_node_new(struct batadv_orig_node *orig_node,
{
struct batadv_neigh_node *neigh_node;

+ spin_lock_bh(&orig_node->neigh_list_lock);
+
neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr);
if (neigh_node)
goto out;
@@ -483,19 +485,20 @@ batadv_neigh_node_new(struct batadv_orig_node *orig_node,
ether_addr_copy(neigh_node->addr, neigh_addr);
neigh_node->if_incoming = hard_iface;
neigh_node->orig_node = orig_node;
+ neigh_node->last_seen = jiffies;

/* extra reference for return */
atomic_set(&neigh_node->refcount, 2);

- spin_lock_bh(&orig_node->neigh_list_lock);
hlist_add_head_rcu(&neigh_node->list, &orig_node->neigh_list);
- spin_unlock_bh(&orig_node->neigh_list_lock);

batadv_dbg(BATADV_DBG_BATMAN, orig_node->bat_priv,
"Creating new neighbor %pM for orig_node %pM on interface %s\n",
neigh_addr, orig_node->orig, hard_iface->net_dev->name);

out:
+ spin_unlock_bh(&orig_node->neigh_list_lock);
+
return neigh_node;
}

@@ -561,6 +564,8 @@ static void batadv_orig_node_release(struct batadv_orig_node *orig_node)
struct hlist_node *node_tmp;
struct batadv_neigh_node *neigh_node;
struct batadv_orig_ifinfo *orig_ifinfo;
+ struct batadv_orig_node_vlan *vlan;
+ struct batadv_orig_ifinfo *last_candidate;

spin_lock_bh(&orig_node->neigh_list_lock);

@@ -576,8 +581,21 @@ static void batadv_orig_node_release(struct batadv_orig_node *orig_node)
hlist_del_rcu(&orig_ifinfo->list);
batadv_orig_ifinfo_free_ref(orig_ifinfo);
}
+
+ last_candidate = orig_node->last_bonding_candidate;
+ orig_node->last_bonding_candidate = NULL;
spin_unlock_bh(&orig_node->neigh_list_lock);

+ if (last_candidate)
+ batadv_orig_ifinfo_free_ref(last_candidate);
+
+ spin_lock_bh(&orig_node->vlan_list_lock);
+ hlist_for_each_entry_safe(vlan, node_tmp, &orig_node->vlan_list, list) {
+ hlist_del_rcu(&vlan->list);
+ batadv_orig_node_vlan_free_ref(vlan);
+ }
+ spin_unlock_bh(&orig_node->vlan_list_lock);
+
/* Free nc_nodes */
batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL);

@@ -1085,7 +1103,7 @@ out:
}

int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface,
- int max_if_num)
+ unsigned int max_if_num)
{
struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
struct batadv_algo_ops *bao = bat_priv->bat_algo_ops;
@@ -1121,7 +1139,7 @@ err:
}

int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface,
- int max_if_num)
+ unsigned int max_if_num)
{
struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
struct batadv_hashtable *hash = bat_priv->orig_hash;
diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h
index a5c37882b409..65824d892a6a 100644
--- a/net/batman-adv/originator.h
+++ b/net/batman-adv/originator.h
@@ -67,9 +67,9 @@ void batadv_orig_ifinfo_free_ref(struct batadv_orig_ifinfo *orig_ifinfo);
int batadv_orig_seq_print_text(struct seq_file *seq, void *offset);
int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset);
int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface,
- int max_if_num);
+ unsigned int max_if_num);
int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface,
- int max_if_num);
+ unsigned int max_if_num);
struct batadv_orig_node_vlan *
batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node,
unsigned short vid);
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index d8a2f33e60e5..b3e8b0e3073c 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -359,6 +359,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
if (skb_cow(skb, ETH_HLEN) < 0)
goto out;

+ ethhdr = eth_hdr(skb);
icmph = (struct batadv_icmp_header *)skb->data;
icmp_packet_rr = (struct batadv_icmp_packet_rr *)icmph;
if (icmp_packet_rr->rr_cur >= BATADV_RR_LEN)
@@ -438,6 +439,52 @@ static int batadv_check_unicast_packet(struct batadv_priv *bat_priv,
return 0;
}

+/**
+ * batadv_last_bonding_get - Get last_bonding_candidate of orig_node
+ * @orig_node: originator node whose last bonding candidate should be retrieved
+ *
+ * Return: last bonding candidate of router or NULL if not found
+ *
+ * The object is returned with refcounter increased by 1.
+ */
+static struct batadv_orig_ifinfo *
+batadv_last_bonding_get(struct batadv_orig_node *orig_node)
+{
+ struct batadv_orig_ifinfo *last_bonding_candidate;
+
+ spin_lock_bh(&orig_node->neigh_list_lock);
+ last_bonding_candidate = orig_node->last_bonding_candidate;
+
+ if (last_bonding_candidate)
+ atomic_inc(&last_bonding_candidate->refcount);
+ spin_unlock_bh(&orig_node->neigh_list_lock);
+
+ return last_bonding_candidate;
+}
+
+/**
+ * batadv_last_bonding_replace - Replace last_bonding_candidate of orig_node
+ * @orig_node: originator node whose bonding candidates should be replaced
+ * @new_candidate: new bonding candidate or NULL
+ */
+static void
+batadv_last_bonding_replace(struct batadv_orig_node *orig_node,
+ struct batadv_orig_ifinfo *new_candidate)
+{
+ struct batadv_orig_ifinfo *old_candidate;
+
+ spin_lock_bh(&orig_node->neigh_list_lock);
+ old_candidate = orig_node->last_bonding_candidate;
+
+ if (new_candidate)
+ atomic_inc(&new_candidate->refcount);
+ orig_node->last_bonding_candidate = new_candidate;
+ spin_unlock_bh(&orig_node->neigh_list_lock);
+
+ if (old_candidate)
+ batadv_orig_ifinfo_free_ref(old_candidate);
+}
+
/**
* batadv_find_router - find a suitable router for this originator
* @bat_priv: the bat priv with all the soft interface information
@@ -485,7 +532,7 @@ batadv_find_router(struct batadv_priv *bat_priv,
* router - obviously there are no other candidates.
*/
rcu_read_lock();
- last_candidate = orig_node->last_bonding_candidate;
+ last_candidate = batadv_last_bonding_get(orig_node);
if (last_candidate)
last_cand_router = rcu_dereference(last_candidate->router);

@@ -545,10 +592,6 @@ next:
}
rcu_read_unlock();

- /* last_bonding_candidate is reset below, remove the old reference. */
- if (orig_node->last_bonding_candidate)
- batadv_orig_ifinfo_free_ref(orig_node->last_bonding_candidate);
-
/* After finding candidates, handle the three cases:
* 1) there is a next candidate, use that
* 2) there is no next candidate, use the first of the list
@@ -557,23 +600,33 @@ next:
if (next_candidate) {
batadv_neigh_node_free_ref(router);

- /* remove references to first candidate, we don't need it. */
- if (first_candidate) {
- batadv_neigh_node_free_ref(first_candidate_router);
- batadv_orig_ifinfo_free_ref(first_candidate);
- }
+ atomic_inc(&next_candidate_router->refcount);
router = next_candidate_router;
- orig_node->last_bonding_candidate = next_candidate;
+ batadv_last_bonding_replace(orig_node, next_candidate);
} else if (first_candidate) {
batadv_neigh_node_free_ref(router);

- /* refcounting has already been done in the loop above. */
+ atomic_inc(&first_candidate_router->refcount);
router = first_candidate_router;
- orig_node->last_bonding_candidate = first_candidate;
+ batadv_last_bonding_replace(orig_node, first_candidate);
} else {
- orig_node->last_bonding_candidate = NULL;
+ batadv_last_bonding_replace(orig_node, NULL);
+ }
+
+ /* cleanup of candidates */
+ if (first_candidate) {
+ batadv_neigh_node_free_ref(first_candidate_router);
+ batadv_orig_ifinfo_free_ref(first_candidate);
}

+ if (next_candidate) {
+ batadv_neigh_node_free_ref(next_candidate_router);
+ batadv_orig_ifinfo_free_ref(next_candidate);
+ }
+
+ if (last_candidate)
+ batadv_orig_ifinfo_free_ref(last_candidate);
+
return router;
}

@@ -585,6 +638,7 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
struct batadv_unicast_packet *unicast_packet;
struct ethhdr *ethhdr = eth_hdr(skb);
int res, hdr_len, ret = NET_RX_DROP;
+ unsigned int len;

unicast_packet = (struct batadv_unicast_packet *)skb->data;

@@ -625,6 +679,7 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
if (hdr_len > 0)
batadv_skb_set_priority(skb, hdr_len);

+ len = skb->len;
res = batadv_send_skb_to_orig(skb, orig_node, recv_if);

/* translate transmit result into receive result */
@@ -632,7 +687,7 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
/* skb was transmitted and consumed */
batadv_inc_counter(bat_priv, BATADV_CNT_FORWARD);
batadv_add_counter(bat_priv, BATADV_CNT_FORWARD_BYTES,
- skb->len + ETH_HLEN);
+ len + ETH_HLEN);

ret = NET_RX_SUCCESS;
} else if (res == NET_XMIT_POLICED) {
@@ -649,6 +704,7 @@ out:
/**
* batadv_reroute_unicast_packet - update the unicast header for re-routing
* @bat_priv: the bat priv with all the soft interface information
+ * @skb: unicast packet to process
* @unicast_packet: the unicast header to be updated
* @dst_addr: the payload destination
* @vid: VLAN identifier
@@ -660,7 +716,7 @@ out:
* Returns true if the packet header has been updated, false otherwise
*/
static bool
-batadv_reroute_unicast_packet(struct batadv_priv *bat_priv,
+batadv_reroute_unicast_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
struct batadv_unicast_packet *unicast_packet,
u8 *dst_addr, unsigned short vid)
{
@@ -689,8 +745,10 @@ batadv_reroute_unicast_packet(struct batadv_priv *bat_priv,
}

/* update the packet header */
+ skb_postpull_rcsum(skb, unicast_packet, sizeof(*unicast_packet));
ether_addr_copy(unicast_packet->dest, orig_addr);
unicast_packet->ttvn = orig_ttvn;
+ skb_postpush_rcsum(skb, unicast_packet, sizeof(*unicast_packet));

ret = true;
out:
@@ -730,7 +788,7 @@ static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
* the packet to
*/
if (batadv_tt_local_client_is_roaming(bat_priv, ethhdr->h_dest, vid)) {
- if (batadv_reroute_unicast_packet(bat_priv, unicast_packet,
+ if (batadv_reroute_unicast_packet(bat_priv, skb, unicast_packet,
ethhdr->h_dest, vid))
batadv_dbg_ratelimited(BATADV_DBG_TT,
bat_priv,
@@ -776,7 +834,7 @@ static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
* destination can possibly be updated and forwarded towards the new
* target host
*/
- if (batadv_reroute_unicast_packet(bat_priv, unicast_packet,
+ if (batadv_reroute_unicast_packet(bat_priv, skb, unicast_packet,
ethhdr->h_dest, vid)) {
batadv_dbg_ratelimited(BATADV_DBG_TT, bat_priv,
"Rerouting unicast packet to %pM (dst=%pM): TTVN mismatch old_ttvn=%u new_ttvn=%u\n",
@@ -799,12 +857,14 @@ static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
if (!primary_if)
return 0;

+ /* update the packet header */
+ skb_postpull_rcsum(skb, unicast_packet, sizeof(*unicast_packet));
ether_addr_copy(unicast_packet->dest, primary_if->net_dev->dev_addr);
+ unicast_packet->ttvn = curr_ttvn;
+ skb_postpush_rcsum(skb, unicast_packet, sizeof(*unicast_packet));

batadv_hardif_free_ref(primary_if);

- unicast_packet->ttvn = curr_ttvn;
-
return 1;
}

@@ -849,7 +909,6 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
bool is4addr;

unicast_packet = (struct batadv_unicast_packet *)skb->data;
- unicast_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;

is4addr = unicast_packet->packet_type == BATADV_UNICAST_4ADDR;
/* the caller function should have already pulled 2 bytes */
@@ -870,9 +929,13 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
if (!batadv_check_unicast_ttvn(bat_priv, skb, hdr_size))
return NET_RX_DROP;

+ unicast_packet = (struct batadv_unicast_packet *)skb->data;
+
/* packet for me */
if (batadv_is_my_mac(bat_priv, unicast_packet->dest)) {
if (is4addr) {
+ unicast_4addr_packet =
+ (struct batadv_unicast_4addr_packet *)skb->data;
subtype = unicast_4addr_packet->subtype;
batadv_dat_inc_counter(bat_priv, subtype);

@@ -998,6 +1061,12 @@ int batadv_recv_frag_packet(struct sk_buff *skb,
batadv_inc_counter(bat_priv, BATADV_CNT_FRAG_RX);
batadv_add_counter(bat_priv, BATADV_CNT_FRAG_RX_BYTES, skb->len);

+ /* batadv_frag_skb_buffer will always consume the skb and
+ * the caller should therefore never try to free the
+ * skb after this point
+ */
+ ret = NET_RX_SUCCESS;
+
/* Add fragment to buffer and merge if possible. */
if (!batadv_frag_skb_buffer(&skb, orig_node_src))
goto out;
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 0e0c3b8ed927..11fbfb222c49 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -381,8 +381,8 @@ int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
struct batadv_orig_node *orig_node;

orig_node = batadv_gw_get_selected_orig(bat_priv);
- return batadv_send_skb_unicast(bat_priv, skb, BATADV_UNICAST, 0,
- orig_node, vid);
+ return batadv_send_skb_unicast(bat_priv, skb, BATADV_UNICAST_4ADDR,
+ BATADV_P_DATA, orig_node, vid);
}

void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface)
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 4812123e0a2c..ff693887ea82 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -1000,7 +1000,9 @@ void batadv_softif_destroy_sysfs(struct net_device *soft_iface)
static void batadv_softif_destroy_netlink(struct net_device *soft_iface,
struct list_head *head)
{
+ struct batadv_priv *bat_priv = netdev_priv(soft_iface);
struct batadv_hard_iface *hard_iface;
+ struct batadv_softif_vlan *vlan;

list_for_each_entry(hard_iface, &batadv_hardif_list, list) {
if (hard_iface->soft_iface == soft_iface)
@@ -1008,6 +1010,13 @@ static void batadv_softif_destroy_netlink(struct net_device *soft_iface,
BATADV_IF_CLEANUP_KEEP);
}

+ /* destroy the "untagged" VLAN */
+ vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS);
+ if (vlan) {
+ batadv_softif_destroy_vlan(bat_priv, vlan);
+ batadv_softif_vlan_free_ref(vlan);
+ }
+
batadv_sysfs_del_meshif(soft_iface);
unregister_netdevice_queue(soft_iface, head);
}
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index ffd49b40e76a..67ee7c83a28d 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -197,8 +197,11 @@ batadv_tt_global_hash_find(struct batadv_priv *bat_priv, const u8 *addr,
static void
batadv_tt_local_entry_free_ref(struct batadv_tt_local_entry *tt_local_entry)
{
- if (atomic_dec_and_test(&tt_local_entry->common.refcount))
+ if (atomic_dec_and_test(&tt_local_entry->common.refcount)) {
+ batadv_softif_vlan_free_ref(tt_local_entry->vlan);
+
kfree_rcu(tt_local_entry, common.rcu);
+ }
}

/**
@@ -303,9 +306,11 @@ static void batadv_tt_global_size_mod(struct batadv_orig_node *orig_node,

if (atomic_add_return(v, &vlan->tt.num_entries) == 0) {
spin_lock_bh(&orig_node->vlan_list_lock);
- hlist_del_init_rcu(&vlan->list);
+ if (!hlist_unhashed(&vlan->list)) {
+ hlist_del_init_rcu(&vlan->list);
+ batadv_orig_node_vlan_free_ref(vlan);
+ }
spin_unlock_bh(&orig_node->vlan_list_lock);
- batadv_orig_node_vlan_free_ref(vlan);
}

batadv_orig_node_vlan_free_ref(vlan);
@@ -503,14 +508,26 @@ static void batadv_tt_global_free(struct batadv_priv *bat_priv,
struct batadv_tt_global_entry *tt_global,
const char *message)
{
+ struct batadv_tt_global_entry *tt_removed_entry;
+ struct hlist_node *tt_removed_node;
+
batadv_dbg(BATADV_DBG_TT, bat_priv,
"Deleting global tt entry %pM (vid: %d): %s\n",
tt_global->common.addr,
BATADV_PRINT_VID(tt_global->common.vid), message);

- batadv_hash_remove(bat_priv->tt.global_hash, batadv_compare_tt,
- batadv_choose_tt, &tt_global->common);
- batadv_tt_global_entry_free_ref(tt_global);
+ tt_removed_node = batadv_hash_remove(bat_priv->tt.global_hash,
+ batadv_compare_tt,
+ batadv_choose_tt,
+ &tt_global->common);
+ if (!tt_removed_node)
+ return;
+
+ /* drop reference of remove hash entry */
+ tt_removed_entry = hlist_entry(tt_removed_node,
+ struct batadv_tt_global_entry,
+ common.hash_entry);
+ batadv_tt_global_entry_free_ref(tt_removed_entry);
}

/**
@@ -636,7 +653,6 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const u8 *addr,
if (unlikely(hash_added != 0)) {
/* remove the reference for the hash */
batadv_tt_local_entry_free_ref(tt_local);
- batadv_softif_vlan_free_ref(vlan);
goto out;
}

@@ -740,7 +756,7 @@ batadv_tt_prepare_tvlv_global_data(struct batadv_orig_node *orig_node,
struct batadv_orig_node_vlan *vlan;
u8 *tt_change_ptr;

- rcu_read_lock();
+ spin_lock_bh(&orig_node->vlan_list_lock);
hlist_for_each_entry_rcu(vlan, &orig_node->vlan_list, list) {
num_vlan++;
num_entries += atomic_read(&vlan->tt.num_entries);
@@ -778,7 +794,7 @@ batadv_tt_prepare_tvlv_global_data(struct batadv_orig_node *orig_node,
*tt_change = (struct batadv_tvlv_tt_change *)tt_change_ptr;

out:
- rcu_read_unlock();
+ spin_unlock_bh(&orig_node->vlan_list_lock);
return tvlv_len;
}

@@ -809,15 +825,20 @@ batadv_tt_prepare_tvlv_local_data(struct batadv_priv *bat_priv,
struct batadv_tvlv_tt_vlan_data *tt_vlan;
struct batadv_softif_vlan *vlan;
u16 num_vlan = 0;
- u16 num_entries = 0;
+ u16 vlan_entries = 0;
+ u16 total_entries = 0;
u16 tvlv_len;
u8 *tt_change_ptr;
int change_offset;

- rcu_read_lock();
+ spin_lock_bh(&bat_priv->softif_vlan_list_lock);
hlist_for_each_entry_rcu(vlan, &bat_priv->softif_vlan_list, list) {
+ vlan_entries = atomic_read(&vlan->tt.num_entries);
+ if (vlan_entries < 1)
+ continue;
+
num_vlan++;
- num_entries += atomic_read(&vlan->tt.num_entries);
+ total_entries += vlan_entries;
}

change_offset = sizeof(**tt_data);
@@ -825,7 +846,7 @@ batadv_tt_prepare_tvlv_local_data(struct batadv_priv *bat_priv,

/* if tt_len is negative, allocate the space needed by the full table */
if (*tt_len < 0)
- *tt_len = batadv_tt_len(num_entries);
+ *tt_len = batadv_tt_len(total_entries);

tvlv_len = *tt_len;
tvlv_len += change_offset;
@@ -842,6 +863,10 @@ batadv_tt_prepare_tvlv_local_data(struct batadv_priv *bat_priv,

tt_vlan = (struct batadv_tvlv_tt_vlan_data *)(*tt_data + 1);
hlist_for_each_entry_rcu(vlan, &bat_priv->softif_vlan_list, list) {
+ vlan_entries = atomic_read(&vlan->tt.num_entries);
+ if (vlan_entries < 1)
+ continue;
+
tt_vlan->vid = htons(vlan->vid);
tt_vlan->crc = htonl(vlan->tt.crc);

@@ -852,7 +877,7 @@ batadv_tt_prepare_tvlv_local_data(struct batadv_priv *bat_priv,
*tt_change = (struct batadv_tvlv_tt_change *)tt_change_ptr;

out:
- rcu_read_unlock();
+ spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
return tvlv_len;
}

@@ -940,7 +965,6 @@ int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset)
struct batadv_tt_common_entry *tt_common_entry;
struct batadv_tt_local_entry *tt_local;
struct batadv_hard_iface *primary_if;
- struct batadv_softif_vlan *vlan;
struct hlist_head *head;
unsigned short vid;
u32 i;
@@ -977,13 +1001,6 @@ int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset)

no_purge = tt_common_entry->flags & np_flag;

- vlan = batadv_softif_vlan_get(bat_priv, vid);
- if (!vlan) {
- seq_printf(seq, "Cannot retrieve VLAN %d\n",
- BATADV_PRINT_VID(vid));
- continue;
- }
-
seq_printf(seq,
" * %pM %4i [%c%c%c%c%c%c] %3u.%03u (%#.8x)\n",
tt_common_entry->addr,
@@ -1001,9 +1018,7 @@ int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset)
BATADV_TT_CLIENT_ISOLA) ? 'I' : '.'),
no_purge ? 0 : last_seen_secs,
no_purge ? 0 : last_seen_msecs,
- vlan->tt.crc);
-
- batadv_softif_vlan_free_ref(vlan);
+ tt_local->vlan->tt.crc);
}
rcu_read_unlock();
}
@@ -1046,10 +1061,10 @@ u16 batadv_tt_local_remove(struct batadv_priv *bat_priv, const u8 *addr,
unsigned short vid, const char *message,
bool roaming)
{
+ struct batadv_tt_local_entry *tt_removed_entry;
struct batadv_tt_local_entry *tt_local_entry;
u16 flags, curr_flags = BATADV_NO_FLAGS;
- struct batadv_softif_vlan *vlan;
- void *tt_entry_exists;
+ struct hlist_node *tt_removed_node;

tt_local_entry = batadv_tt_local_hash_find(bat_priv, addr, vid);
if (!tt_local_entry)
@@ -1078,23 +1093,18 @@ u16 batadv_tt_local_remove(struct batadv_priv *bat_priv, const u8 *addr,
*/
batadv_tt_local_event(bat_priv, tt_local_entry, BATADV_TT_CLIENT_DEL);

- tt_entry_exists = batadv_hash_remove(bat_priv->tt.local_hash,
+ tt_removed_node = batadv_hash_remove(bat_priv->tt.local_hash,
batadv_compare_tt,
batadv_choose_tt,
&tt_local_entry->common);
- if (!tt_entry_exists)
- goto out;
-
- /* extra call to free the local tt entry */
- batadv_tt_local_entry_free_ref(tt_local_entry);
-
- /* decrease the reference held for this vlan */
- vlan = batadv_softif_vlan_get(bat_priv, vid);
- if (!vlan)
+ if (!tt_removed_node)
goto out;

- batadv_softif_vlan_free_ref(vlan);
- batadv_softif_vlan_free_ref(vlan);
+ /* drop reference of remove hash entry */
+ tt_removed_entry = hlist_entry(tt_removed_node,
+ struct batadv_tt_local_entry,
+ common.hash_entry);
+ batadv_tt_local_entry_free_ref(tt_removed_entry);

out:
if (tt_local_entry)
@@ -1168,7 +1178,6 @@ static void batadv_tt_local_table_free(struct batadv_priv *bat_priv)
spinlock_t *list_lock; /* protects write access to the hash lists */
struct batadv_tt_common_entry *tt_common_entry;
struct batadv_tt_local_entry *tt_local;
- struct batadv_softif_vlan *vlan;
struct hlist_node *node_tmp;
struct hlist_head *head;
u32 i;
@@ -1190,14 +1199,6 @@ static void batadv_tt_local_table_free(struct batadv_priv *bat_priv)
struct batadv_tt_local_entry,
common);

- /* decrease the reference held for this vlan */
- vlan = batadv_softif_vlan_get(bat_priv,
- tt_common_entry->vid);
- if (vlan) {
- batadv_softif_vlan_free_ref(vlan);
- batadv_softif_vlan_free_ref(vlan);
- }
-
batadv_tt_local_entry_free_ref(tt_local);
}
spin_unlock_bh(list_lock);
@@ -1273,7 +1274,8 @@ batadv_tt_global_orig_entry_find(const struct batadv_tt_global_entry *entry,
*/
static bool
batadv_tt_global_entry_has_orig(const struct batadv_tt_global_entry *entry,
- const struct batadv_orig_node *orig_node)
+ const struct batadv_orig_node *orig_node,
+ u8 *flags)
{
struct batadv_tt_orig_list_entry *orig_entry;
bool found = false;
@@ -1281,25 +1283,64 @@ batadv_tt_global_entry_has_orig(const struct batadv_tt_global_entry *entry,
orig_entry = batadv_tt_global_orig_entry_find(entry, orig_node);
if (orig_entry) {
found = true;
+
+ if (flags)
+ *flags = orig_entry->flags;
+
batadv_tt_orig_list_entry_free_ref(orig_entry);
}

return found;
}

+/**
+ * batadv_tt_global_sync_flags - update TT sync flags
+ * @tt_global: the TT global entry to update sync flags in
+ *
+ * Updates the sync flag bits in the tt_global flag attribute with a logical
+ * OR of all sync flags from any of its TT orig entries.
+ */
+static void
+batadv_tt_global_sync_flags(struct batadv_tt_global_entry *tt_global)
+{
+ struct batadv_tt_orig_list_entry *orig_entry;
+ const struct hlist_head *head;
+ u16 flags = BATADV_NO_FLAGS;
+
+ rcu_read_lock();
+ head = &tt_global->orig_list;
+ hlist_for_each_entry_rcu(orig_entry, head, list)
+ flags |= orig_entry->flags;
+ rcu_read_unlock();
+
+ flags |= tt_global->common.flags & (~BATADV_TT_SYNC_MASK);
+ tt_global->common.flags = flags;
+}
+
+/**
+ * batadv_tt_global_orig_entry_add - add or update a TT orig entry
+ * @tt_global: the TT global entry to add an orig entry in
+ * @orig_node: the originator to add an orig entry for
+ * @ttvn: translation table version number of this changeset
+ * @flags: TT sync flags
+ */
static void
batadv_tt_global_orig_entry_add(struct batadv_tt_global_entry *tt_global,
- struct batadv_orig_node *orig_node, int ttvn)
+ struct batadv_orig_node *orig_node, int ttvn,
+ u8 flags)
{
struct batadv_tt_orig_list_entry *orig_entry;

+ spin_lock_bh(&tt_global->list_lock);
+
orig_entry = batadv_tt_global_orig_entry_find(tt_global, orig_node);
if (orig_entry) {
/* refresh the ttvn: the current value could be a bogus one that
* was added during a "temporary client detection"
*/
orig_entry->ttvn = ttvn;
- goto out;
+ orig_entry->flags = flags;
+ goto sync_flags;
}

orig_entry = kzalloc(sizeof(*orig_entry), GFP_ATOMIC);
@@ -1311,17 +1352,20 @@ batadv_tt_global_orig_entry_add(struct batadv_tt_global_entry *tt_global,
batadv_tt_global_size_inc(orig_node, tt_global->common.vid);
orig_entry->orig_node = orig_node;
orig_entry->ttvn = ttvn;
+ orig_entry->flags = flags;
atomic_set(&orig_entry->refcount, 2);

- spin_lock_bh(&tt_global->list_lock);
hlist_add_head_rcu(&orig_entry->list,
&tt_global->orig_list);
- spin_unlock_bh(&tt_global->list_lock);
atomic_inc(&tt_global->orig_list_count);

+sync_flags:
+ batadv_tt_global_sync_flags(tt_global);
out:
if (orig_entry)
batadv_tt_orig_list_entry_free_ref(orig_entry);
+
+ spin_unlock_bh(&tt_global->list_lock);
}

/**
@@ -1379,7 +1423,8 @@ static bool batadv_tt_global_add(struct batadv_priv *bat_priv,
ether_addr_copy(common->addr, tt_addr);
common->vid = vid;

- common->flags = flags;
+ common->flags = flags & (~BATADV_TT_SYNC_MASK);
+
tt_global_entry->roam_at = 0;
/* node must store current time in case of roaming. This is
* needed to purge this entry out on timeout (if nobody claims
@@ -1420,7 +1465,7 @@ static bool batadv_tt_global_add(struct batadv_priv *bat_priv,
if (!(common->flags & BATADV_TT_CLIENT_TEMP))
goto out;
if (batadv_tt_global_entry_has_orig(tt_global_entry,
- orig_node))
+ orig_node, NULL))
goto out_remove;
batadv_tt_global_del_orig_list(tt_global_entry);
goto add_orig_entry;
@@ -1441,7 +1486,7 @@ static bool batadv_tt_global_add(struct batadv_priv *bat_priv,
* TT_CLIENT_WIFI, therefore they have to be copied in the
* client entry
*/
- tt_global_entry->common.flags |= flags;
+ tt_global_entry->common.flags |= flags & (~BATADV_TT_SYNC_MASK);

/* If there is the BATADV_TT_CLIENT_ROAM flag set, there is only
* one originator left in the list and we previously received a
@@ -1458,7 +1503,8 @@ static bool batadv_tt_global_add(struct batadv_priv *bat_priv,
}
add_orig_entry:
/* add the new orig_entry (if needed) or update it */
- batadv_tt_global_orig_entry_add(tt_global_entry, orig_node, ttvn);
+ batadv_tt_global_orig_entry_add(tt_global_entry, orig_node, ttvn,
+ flags & BATADV_TT_SYNC_MASK);

batadv_dbg(BATADV_DBG_TT, bat_priv,
"Creating new global tt entry: %pM (vid: %d, via %pM)\n",
@@ -2111,6 +2157,7 @@ static u32 batadv_tt_global_crc(struct batadv_priv *bat_priv,
unsigned short vid)
{
struct batadv_hashtable *hash = bat_priv->tt.global_hash;
+ struct batadv_tt_orig_list_entry *tt_orig;
struct batadv_tt_common_entry *tt_common;
struct batadv_tt_global_entry *tt_global;
struct hlist_head *head;
@@ -2149,8 +2196,9 @@ static u32 batadv_tt_global_crc(struct batadv_priv *bat_priv,
/* find out if this global entry is announced by this
* originator
*/
- if (!batadv_tt_global_entry_has_orig(tt_global,
- orig_node))
+ tt_orig = batadv_tt_global_orig_entry_find(tt_global,
+ orig_node);
+ if (!tt_orig)
continue;

/* use network order to read the VID: this ensures that
@@ -2162,10 +2210,12 @@ static u32 batadv_tt_global_crc(struct batadv_priv *bat_priv,
/* compute the CRC on flags that have to be kept in sync
* among nodes
*/
- flags = tt_common->flags & BATADV_TT_SYNC_MASK;
+ flags = tt_orig->flags;
crc_tmp = crc32c(crc_tmp, &flags, sizeof(flags));

crc ^= crc32c(crc_tmp, tt_common->addr, ETH_ALEN);
+
+ batadv_tt_orig_list_entry_free_ref(tt_orig);
}
rcu_read_unlock();
}
@@ -2230,6 +2280,29 @@ static u32 batadv_tt_local_crc(struct batadv_priv *bat_priv,
return crc;
}

+/**
+ * batadv_tt_req_node_release - free tt_req node entry
+ * @ref: kref pointer of the tt req_node entry
+ */
+static void batadv_tt_req_node_release(struct kref *ref)
+{
+ struct batadv_tt_req_node *tt_req_node;
+
+ tt_req_node = container_of(ref, struct batadv_tt_req_node, refcount);
+
+ kfree(tt_req_node);
+}
+
+/**
+ * batadv_tt_req_node_put - decrement the tt_req_node refcounter and
+ * possibly release it
+ * @tt_req_node: tt_req_node to be free'd
+ */
+static void batadv_tt_req_node_put(struct batadv_tt_req_node *tt_req_node)
+{
+ kref_put(&tt_req_node->refcount, batadv_tt_req_node_release);
+}
+
static void batadv_tt_req_list_free(struct batadv_priv *bat_priv)
{
struct batadv_tt_req_node *node;
@@ -2239,7 +2312,7 @@ static void batadv_tt_req_list_free(struct batadv_priv *bat_priv)

hlist_for_each_entry_safe(node, safe, &bat_priv->tt.req_list, list) {
hlist_del_init(&node->list);
- kfree(node);
+ batadv_tt_req_node_put(node);
}

spin_unlock_bh(&bat_priv->tt.req_list_lock);
@@ -2276,7 +2349,7 @@ static void batadv_tt_req_purge(struct batadv_priv *bat_priv)
if (batadv_has_timed_out(node->issued_at,
BATADV_TT_REQUEST_TIMEOUT)) {
hlist_del_init(&node->list);
- kfree(node);
+ batadv_tt_req_node_put(node);
}
}
spin_unlock_bh(&bat_priv->tt.req_list_lock);
@@ -2308,9 +2381,11 @@ batadv_tt_req_node_new(struct batadv_priv *bat_priv,
if (!tt_req_node)
goto unlock;

+ kref_init(&tt_req_node->refcount);
ether_addr_copy(tt_req_node->addr, orig_node->orig);
tt_req_node->issued_at = jiffies;

+ kref_get(&tt_req_node->refcount);
hlist_add_head(&tt_req_node->list, &bat_priv->tt.req_list);
unlock:
spin_unlock_bh(&bat_priv->tt.req_list_lock);
@@ -2324,17 +2399,24 @@ unlock:
*
* Returns 1 if the entry is a valid, 0 otherwise.
*/
-static int batadv_tt_local_valid(const void *entry_ptr, const void *data_ptr)
+static int batadv_tt_local_valid(const void *entry_ptr,
+ const void *data_ptr,
+ u8 *flags)
{
const struct batadv_tt_common_entry *tt_common_entry = entry_ptr;

if (tt_common_entry->flags & BATADV_TT_CLIENT_NEW)
return 0;
+
+ if (flags)
+ *flags = tt_common_entry->flags;
+
return 1;
}

static int batadv_tt_global_valid(const void *entry_ptr,
- const void *data_ptr)
+ const void *data_ptr,
+ u8 *flags)
{
const struct batadv_tt_common_entry *tt_common_entry = entry_ptr;
const struct batadv_tt_global_entry *tt_global_entry;
@@ -2348,7 +2430,8 @@ static int batadv_tt_global_valid(const void *entry_ptr,
struct batadv_tt_global_entry,
common);

- return batadv_tt_global_entry_has_orig(tt_global_entry, orig_node);
+ return batadv_tt_global_entry_has_orig(tt_global_entry, orig_node,
+ flags);
}

/**
@@ -2364,18 +2447,25 @@ static int batadv_tt_global_valid(const void *entry_ptr,
static void batadv_tt_tvlv_generate(struct batadv_priv *bat_priv,
struct batadv_hashtable *hash,
void *tvlv_buff, u16 tt_len,
- int (*valid_cb)(const void *, const void *),
+ int (*valid_cb)(const void *,
+ const void *,
+ u8 *flags),
void *cb_data)
{
struct batadv_tt_common_entry *tt_common_entry;
struct batadv_tvlv_tt_change *tt_change;
struct hlist_head *head;
u16 tt_tot, tt_num_entries = 0;
+ u8 flags;
+ bool ret;
u32 i;

tt_tot = batadv_tt_entries(tt_len);
tt_change = (struct batadv_tvlv_tt_change *)tvlv_buff;

+ if (!valid_cb)
+ return;
+
rcu_read_lock();
for (i = 0; i < hash->size; i++) {
head = &hash->table[i];
@@ -2385,11 +2475,12 @@ static void batadv_tt_tvlv_generate(struct batadv_priv *bat_priv,
if (tt_tot == tt_num_entries)
break;

- if ((valid_cb) && (!valid_cb(tt_common_entry, cb_data)))
+ ret = valid_cb(tt_common_entry, cb_data, &flags);
+ if (!ret)
continue;

ether_addr_copy(tt_change->addr, tt_common_entry->addr);
- tt_change->flags = tt_common_entry->flags;
+ tt_change->flags = flags;
tt_change->vid = htons(tt_common_entry->vid);
memset(tt_change->reserved, 0,
sizeof(tt_change->reserved));
@@ -2560,13 +2651,19 @@ static int batadv_send_tt_request(struct batadv_priv *bat_priv,
out:
if (primary_if)
batadv_hardif_free_ref(primary_if);
+
if (ret && tt_req_node) {
spin_lock_bh(&bat_priv->tt.req_list_lock);
- /* hlist_del_init() verifies tt_req_node still is in the list */
- hlist_del_init(&tt_req_node->list);
+ if (!hlist_unhashed(&tt_req_node->list)) {
+ hlist_del_init(&tt_req_node->list);
+ batadv_tt_req_node_put(tt_req_node);
+ }
spin_unlock_bh(&bat_priv->tt.req_list_lock);
- kfree(tt_req_node);
}
+
+ if (tt_req_node)
+ batadv_tt_req_node_put(tt_req_node);
+
kfree(tvlv_tt_data);
return ret;
}
@@ -3002,7 +3099,7 @@ static void batadv_handle_tt_response(struct batadv_priv *bat_priv,
if (!batadv_compare_eth(node->addr, resp_src))
continue;
hlist_del_init(&node->list);
- kfree(node);
+ batadv_tt_req_node_put(node);
}

spin_unlock_bh(&bat_priv->tt.req_list_lock);
@@ -3227,7 +3324,6 @@ static void batadv_tt_local_purge_pending_clients(struct batadv_priv *bat_priv)
struct batadv_hashtable *hash = bat_priv->tt.local_hash;
struct batadv_tt_common_entry *tt_common;
struct batadv_tt_local_entry *tt_local;
- struct batadv_softif_vlan *vlan;
struct hlist_node *node_tmp;
struct hlist_head *head;
spinlock_t *list_lock; /* protects write access to the hash lists */
@@ -3257,13 +3353,6 @@ static void batadv_tt_local_purge_pending_clients(struct batadv_priv *bat_priv)
struct batadv_tt_local_entry,
common);

- /* decrease the reference held for this vlan */
- vlan = batadv_softif_vlan_get(bat_priv, tt_common->vid);
- if (vlan) {
- batadv_softif_vlan_free_ref(vlan);
- batadv_softif_vlan_free_ref(vlan);
- }
-
batadv_tt_local_entry_free_ref(tt_local);
}
spin_unlock_bh(list_lock);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index cbd347c2e4a5..8fce1241ad6d 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -77,11 +77,13 @@ enum batadv_dhcp_recipient {
* @ogm_buff: buffer holding the OGM packet
* @ogm_buff_len: length of the OGM packet buffer
* @ogm_seqno: OGM sequence number - used to identify each OGM
+ * @ogm_buff_mutex: lock protecting ogm_buff and ogm_buff_len
*/
struct batadv_hard_iface_bat_iv {
unsigned char *ogm_buff;
int ogm_buff_len;
atomic_t ogm_seqno;
+ struct mutex ogm_buff_mutex;
};

/**
@@ -103,7 +105,7 @@ struct batadv_hard_iface_bat_iv {
*/
struct batadv_hard_iface {
struct list_head list;
- s16 if_num;
+ unsigned int if_num;
char if_status;
struct net_device *net_dev;
u8 num_bcasts;
@@ -287,7 +289,9 @@ struct batadv_orig_node {
DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
u32 last_bcast_seqno;
struct hlist_head neigh_list;
- /* neigh_list_lock protects: neigh_list and router */
+ /* neigh_list_lock protects: neigh_list, ifinfo_list,
+ * last_bonding_candidate and router
+ */
spinlock_t neigh_list_lock;
struct hlist_node hash_entry;
struct batadv_priv *bat_priv;
@@ -806,7 +810,7 @@ struct batadv_priv {
atomic_t bcast_seqno;
atomic_t bcast_queue_left;
atomic_t batman_queue_left;
- char num_ifaces;
+ unsigned int num_ifaces;
struct kobject *mesh_obj;
struct dentry *debug_dir;
struct hlist_head forw_bat_list;
@@ -884,6 +888,7 @@ struct batadv_socket_packet {
* backbone gateway - no bcast traffic is formwared until the situation was
* resolved
* @crc: crc16 checksum over all claims
+ * @crc_lock: lock protecting crc
* @refcount: number of contexts the object is used
* @rcu: struct used for freeing in an RCU-safe manner
*/
@@ -897,6 +902,7 @@ struct batadv_bla_backbone_gw {
atomic_t wait_periods;
atomic_t request_sent;
u16 crc;
+ spinlock_t crc_lock; /* protects crc */
atomic_t refcount;
struct rcu_head rcu;
};
@@ -915,6 +921,7 @@ struct batadv_bla_claim {
u8 addr[ETH_ALEN];
unsigned short vid;
struct batadv_bla_backbone_gw *backbone_gw;
+ spinlock_t backbone_lock; /* protects backbone_gw */
unsigned long lasttime;
struct hlist_node hash_entry;
struct rcu_head rcu;
@@ -947,10 +954,12 @@ struct batadv_tt_common_entry {
* struct batadv_tt_local_entry - translation table local entry data
* @common: general translation table data
* @last_seen: timestamp used for purging stale tt local entries
+ * @vlan: soft-interface vlan of the entry
*/
struct batadv_tt_local_entry {
struct batadv_tt_common_entry common;
unsigned long last_seen;
+ struct batadv_softif_vlan *vlan;
};

/**
@@ -973,6 +982,7 @@ struct batadv_tt_global_entry {
* struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
* @orig_node: pointer to orig node announcing this non-mesh client
* @ttvn: translation table version number which added the non-mesh client
+ * @flags: per orig entry TT sync flags
* @list: list node for batadv_tt_global_entry::orig_list
* @refcount: number of contexts the object is used
* @rcu: struct used for freeing in an RCU-safe manner
@@ -980,6 +990,7 @@ struct batadv_tt_global_entry {
struct batadv_tt_orig_list_entry {
struct batadv_orig_node *orig_node;
u8 ttvn;
+ u8 flags;
struct hlist_node list;
atomic_t refcount;
struct rcu_head rcu;
@@ -999,11 +1010,13 @@ struct batadv_tt_change_node {
* struct batadv_tt_req_node - data to keep track of the tt requests in flight
* @addr: mac address address of the originator this request was sent to
* @issued_at: timestamp used for purging stale tt requests
+ * @refcount: number of contexts the object is used by
* @list: list node for batadv_priv_tt::req_list
*/
struct batadv_tt_req_node {
u8 addr[ETH_ALEN];
unsigned long issued_at;
+ struct kref refcount;
struct hlist_node list;
};

@@ -1168,9 +1181,9 @@ struct batadv_algo_ops {
struct batadv_hard_iface *hard_iface);
void (*bat_orig_free)(struct batadv_orig_node *orig_node);
int (*bat_orig_add_if)(struct batadv_orig_node *orig_node,
- int max_if_num);
+ unsigned int max_if_num);
int (*bat_orig_del_if)(struct batadv_orig_node *orig_node,
- int max_if_num, int del_if_num);
+ unsigned int max_if_num, unsigned int del_if_num);
};

/**
diff --git a/net/ieee802154/nl_policy.c b/net/ieee802154/nl_policy.c
index 35c432668454..040983fc15da 100644
--- a/net/ieee802154/nl_policy.c
+++ b/net/ieee802154/nl_policy.c
@@ -30,7 +30,13 @@ const struct nla_policy ieee802154_policy[IEEE802154_ATTR_MAX + 1] = {
[IEEE802154_ATTR_HW_ADDR] = { .type = NLA_HW_ADDR, },
[IEEE802154_ATTR_PAN_ID] = { .type = NLA_U16, },
[IEEE802154_ATTR_CHANNEL] = { .type = NLA_U8, },
+ [IEEE802154_ATTR_BCN_ORD] = { .type = NLA_U8, },
+ [IEEE802154_ATTR_SF_ORD] = { .type = NLA_U8, },
+ [IEEE802154_ATTR_PAN_COORD] = { .type = NLA_U8, },
+ [IEEE802154_ATTR_BAT_EXT] = { .type = NLA_U8, },
+ [IEEE802154_ATTR_COORD_REALIGN] = { .type = NLA_U8, },
[IEEE802154_ATTR_PAGE] = { .type = NLA_U8, },
+ [IEEE802154_ATTR_DEV_TYPE] = { .type = NLA_U8, },
[IEEE802154_ATTR_COORD_SHORT_ADDR] = { .type = NLA_U16, },
[IEEE802154_ATTR_COORD_HW_ADDR] = { .type = NLA_HW_ADDR, },
[IEEE802154_ATTR_COORD_PAN_ID] = { .type = NLA_U16, },
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index 7fe643062013..98ed5e43ab7b 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -1809,6 +1809,7 @@ void cipso_v4_error(struct sk_buff *skb, int error, u32 gateway)
{
unsigned char optbuf[sizeof(struct ip_options) + 40];
struct ip_options *opt = (struct ip_options *)optbuf;
+ int res;

if (ip_hdr(skb)->protocol == IPPROTO_ICMP || error != -EACCES)
return;
@@ -1820,7 +1821,11 @@ void cipso_v4_error(struct sk_buff *skb, int error, u32 gateway)

memset(opt, 0, sizeof(struct ip_options));
opt->optlen = ip_hdr(skb)->ihl*4 - sizeof(struct iphdr);
- if (__ip_options_compile(dev_net(skb->dev), opt, skb, NULL))
+ rcu_read_lock();
+ res = __ip_options_compile(dev_net(skb->dev), opt, skb, NULL);
+ rcu_read_unlock();
+
+ if (res)
return;

if (gateway)
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 71263754b19b..bd2a6ec7572a 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -185,9 +185,15 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
retv = -EBUSY;
break;
}
- } else if (sk->sk_protocol != IPPROTO_TCP)
+ } else if (sk->sk_protocol == IPPROTO_TCP) {
+ if (sk->sk_prot != &tcpv6_prot) {
+ retv = -EBUSY;
+ break;
+ }
break;
-
+ } else {
+ break;
+ }
if (sk->sk_state != TCP_ESTABLISHED) {
retv = -ENOTCONN;
break;
diff --git a/net/netfilter/nfnetlink_cthelper.c b/net/netfilter/nfnetlink_cthelper.c
index ac143ae4f7b6..8c1733869343 100644
--- a/net/netfilter/nfnetlink_cthelper.c
+++ b/net/netfilter/nfnetlink_cthelper.c
@@ -711,6 +711,8 @@ static const struct nla_policy nfnl_cthelper_policy[NFCTH_MAX+1] = {
[NFCTH_NAME] = { .type = NLA_NUL_STRING,
.len = NF_CT_HELPER_NAME_LEN-1 },
[NFCTH_QUEUE_NUM] = { .type = NLA_U32, },
+ [NFCTH_PRIV_DATA_LEN] = { .type = NLA_U32, },
+ [NFCTH_STATUS] = { .type = NLA_U32, },
};

static const struct nfnl_callback nfnl_cthelper_cb[NFNL_MSG_CTHELPER_MAX] = {
diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c
index 5a58f9f38095..291f24fef19a 100644
--- a/net/nfc/hci/core.c
+++ b/net/nfc/hci/core.c
@@ -193,13 +193,20 @@ exit:
void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
struct sk_buff *skb)
{
- u8 gate = hdev->pipes[pipe].gate;
u8 status = NFC_HCI_ANY_OK;
struct hci_create_pipe_resp *create_info;
struct hci_delete_pipe_noti *delete_info;
struct hci_all_pipe_cleared_noti *cleared_info;
+ u8 gate;

- pr_debug("from gate %x pipe %x cmd %x\n", gate, pipe, cmd);
+ pr_debug("from pipe %x cmd %x\n", pipe, cmd);
+
+ if (pipe >= NFC_HCI_MAX_PIPES) {
+ status = NFC_HCI_ANY_E_NOK;
+ goto exit;
+ }
+
+ gate = hdev->pipes[pipe].gate;

switch (cmd) {
case NFC_HCI_ADM_NOTIFY_PIPE_CREATED:
@@ -387,8 +394,14 @@ void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
struct sk_buff *skb)
{
int r = 0;
- u8 gate = hdev->pipes[pipe].gate;
+ u8 gate;
+
+ if (pipe >= NFC_HCI_MAX_PIPES) {
+ pr_err("Discarded event %x to invalid pipe %x\n", event, pipe);
+ goto exit;
+ }

+ gate = hdev->pipes[pipe].gate;
if (gate == NFC_HCI_INVALID_GATE) {
pr_err("Discarded event %x to unopened pipe %x\n", event, pipe);
goto exit;
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 04d4c388a7a8..c9d5e9c62178 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -62,7 +62,10 @@ static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = {
[NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED },
[NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING,
.len = NFC_FIRMWARE_NAME_MAXSIZE },
+ [NFC_ATTR_SE_INDEX] = { .type = NLA_U32 },
[NFC_ATTR_SE_APDU] = { .type = NLA_BINARY },
+ [NFC_ATTR_VENDOR_ID] = { .type = NLA_U32 },
+ [NFC_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
[NFC_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },

};
diff --git a/net/sched/sch_fq.c b/net/sched/sch_fq.c
index fb99872ef426..eb814ffc0902 100644
--- a/net/sched/sch_fq.c
+++ b/net/sched/sch_fq.c
@@ -668,6 +668,7 @@ static const struct nla_policy fq_policy[TCA_FQ_MAX + 1] = {
[TCA_FQ_FLOW_MAX_RATE] = { .type = NLA_U32 },
[TCA_FQ_BUCKETS_LOG] = { .type = NLA_U32 },
[TCA_FQ_FLOW_REFILL_DELAY] = { .type = NLA_U32 },
+ [TCA_FQ_ORPHAN_MASK] = { .type = NLA_U32 },
};

static int fq_change(struct Qdisc *sch, struct nlattr *opt)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 4b30e91106d0..c6c168f20b0f 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -404,6 +404,8 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_MDID] = { .type = NLA_U16 },
[NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
+ [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
+ [NL80211_ATTR_MAX_CRIT_PROT_DURATION] = { .type = NLA_U16 },
[NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
[NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
[NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
@@ -429,6 +431,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
[NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
[NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
+ [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
[NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
[NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
[NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
\
 
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  Last update: 2020-03-21 10:26    [W:0.112 / U:1.980 seconds]
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