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2015-10-01bridge: vlan: fix possible null vlgrp deref while registering new portNikolay Aleksandrov1-1/+3
While a new port is being initialized the rx_handler gets set, but the vlans get initialized later in br_add_if() and in that window if we receive a frame with a link-local address we can try to dereference p->vlgrp in: br_handle_frame() -> br_handle_local_finish() -> br_should_learn() Fix this by checking vlgrp before using it. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-01bridge: vlan: adjust rhashtable initial size and hash locks sizeNikolay Aleksandrov1-0/+2
As Stephen pointed out the default initial size is more than we need, so let's start small (4 elements, thus nelem_hint = 3). Also limit the hash locks to the number of CPUs as we don't need any write-side scaling and this looks like the minimum. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: dsa: fix preparation of a port STP updateVivien Didelot1-3/+8
Because of the default 0 value of ret in dsa_slave_port_attr_set, a driver may return -EOPNOTSUPP from the commit phase of a STP state, which triggers a WARN() from switchdev. This happened on a 6185 switch which does not support hardware bridging. Reported-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: Add support for filtering neigh dump by master deviceDavid Ahern2-1/+32
Add support for filtering neighbor dumps by master device by adding the NDA_MASTER attribute to the dump request. A new netlink flag, NLM_F_DUMP_FILTERED, is added to indicate the kernel supports the request and output is filtered as requested. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29tcp: fix tcp_v6_md5_do_lookup prototypeEric Dumazet1-1/+1
tcp_v6_md5_do_lookup() now takes a const socket, even if CONFIG_TCP_MD5SIG is not set. Fixes: b83e3deb974c ("tcp: md5: constify tcp_md5_do_lookup() socket argument") From: Eric Dumazet <edumazet@google.com> Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: switchdev: extract struct switchdev_obj_*Vivien Didelot1-27/+26
Now that switchdev and its drivers directly use specific switchdev_obj_* structures, move them out of the switchdev_obj union and get rif of this outer structure. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: switchdev: abstract object in add/del opsVivien Didelot6-117/+99
Similar to the notifier_call callback of a notifier_block, change the function signature of switchdev add and del operations to: int switchdev_port_obj_add/del(struct net_device *dev, enum switchdev_obj_id id, void *obj); This allows the caller to pass a specific switchdev_obj_* structure instead of the generic switchdev_obj one. Drivers implementation of these operations and switchdev have been changed accordingly. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: switchdev: pass callback to dump operationVivien Didelot4-48/+53
Similar to the notifier_call callback of a notifier_block, change the function signature of switchdev dump operation to: int switchdev_port_obj_dump(struct net_device *dev, enum switchdev_obj_id id, void *obj, int (*cb)(void *obj)); This allows the caller to pass and expect back a specific switchdev_obj_* structure instead of the generic switchdev_obj one. Drivers implementation of dump operation can now expect this specific structure and call the callback with it. Drivers have been changed accordingly. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: switchdev: remove dev from switchdev_obj cbVivien Didelot4-9/+7
The net_device associated to a dump operation does not have to be passed to the callback. switchdev stores it in a superset struct, if needed. Also some drivers (such as DSA drivers) may not have easy access to it. This will simplify pushing the callback function down to the drivers. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: switchdev: move dev in switchdev_fdb_dumpVivien Didelot1-1/+3
The FDB dump callback requires the related net_device so move it to the struct switchdev_fdb_dump superset instead of using a callback param. With this done, it'll be simpler to change the dump function signature. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: switchdev: remove dev in port_vlan_dump_putVivien Didelot1-6/+5
The static switchdev_port_vlan_dump_put function does not need the net_device parameter, so remove it. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: macmace: Allow modular buildGeert Uytterhoeven1-1/+1
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29m68k/mac: Export Peripheral System Controller (PSC) base address to modulesGeert Uytterhoeven1-0/+1
If CONFIG_MACMACE=m: ERROR: psc [drivers/net/ethernet/apple/macmace.ko] undefined! Add the missing export to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: hplance: Allow modular buildGeert Uytterhoeven1-1/+1
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: 7990: Export lance_poll() to modulesGeert Uytterhoeven1-0/+1
If CONFIG_HPLANCE=m and CONFIG_NET_POLL_CONTROLLER=y: ERROR: "lance_poll" [drivers/net/ethernet/amd/hplance.ko] undefined! Add the missing export to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: mac8390: Allow modular buildGeert Uytterhoeven2-23/+11
The modular driver supports only one card, just like the built-in driver. Note that this limitation is a problem which affects all Nubus card drivers, because they have to do all their own bus matching, because Nubus still lacks the necessary driver model support. Suggested-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29dsa: mv88e6xxx: Fix unsigned/signed issueAndrew Lunn1-1/+2
commit dea870242a9c ("dsa: mv88e6xxx: Allow speed/duplex of port to be configured") leads to the following static checker warning: drivers/net/dsa/mv88e6xxx.c:585 mv88e6xxx_adjust_link() warn: unsigned 'ret' is never less than zero. drivers/net/dsa/mv88e6xxx.c 573 void mv88e6xxx_adjust_link(struct dsa_switch *ds, int port, 574 struct phy_device *phydev) 575 { 576 struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); 577 u32 ret, reg; 578 579 if (!phy_is_pseudo_fixed_link(phydev)) 580 return; 581 582 mutex_lock(&ps->smi_mutex); 583 584 ret = _mv88e6xxx_reg_read(ds, REG_PORT(port), PORT_PCS_CTRL); 585 if (ret < 0) Make ret an int, which is the return type for _mv88e6xxx_reg_read() Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: Move netif_index_is_l3_master to l3mdev.hDavid Ahern3-21/+25
Change CONFIG dependency to CONFIG_NET_L3_MASTER_DEV as well. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: Remove vrf header fileDavid Ahern3-31/+15
Move remaining structs to VRF driver and delete the vrf header file. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: Remove the now unused vrf_ptrDavid Ahern3-38/+2
Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: Replace calls to vrf_dev_get_rthDavid Ahern2-27/+3
Replace calls to vrf_dev_get_rth with l3mdev_get_rtable. The check on the flow flags is handled in the l3mdev operation. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: Replace vrf_dev_table and friendsDavid Ahern3-86/+5
Replace calls to vrf_dev_table and friends with l3mdev_fib_table and kin. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: Replace vrf_master_ifindex{, _rcu} with l3mdev equivalentsDavid Ahern7-63/+20
Replace calls to vrf_master_ifindex_rcu and vrf_master_ifindex with either l3mdev_master_ifindex_rcu or l3mdev_master_ifindex. The pattern: oif = vrf_master_ifindex(dev) ? : dev->ifindex; is replaced with oif = l3mdev_fib_oif(dev); And remove the now unused vrf macros. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: Add support for l3mdev ops to VRF driverDavid Ahern2-0/+30
Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: Introduce L3 Master device abstractionDavid Ahern8-0/+246
L3 master devices allow users of the abstraction to influence FIB lookups for enslaved devices. Current API provides a means for the master device to return a specific FIB table for an enslaved device, to return an rtable/custom dst and influence the OIF used for fib lookups. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: Rename IFF_VRF_MASTER to IFF_L3MDEV_MASTERDavid Ahern7-16/+16
Rename IFF_VRF_MASTER to IFF_L3MDEV_MASTER and update the name of the netif_is_vrf and netif_index_is_vrf macros. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29tcp: prepare fastopen code for upcoming listener changesEric Dumazet9-60/+35
While auditing TCP stack for upcoming 'lockless' listener changes, I found I had to change fastopen_init_queue() to properly init the object before publishing it. Otherwise an other cpu could try to lock the spinlock before it gets properly initialized. Instead of adding appropriate barriers, just remove dynamic memory allocations : - Structure is 28 bytes on 64bit arches. Using additional 8 bytes for holding a pointer seems overkill. - Two listeners can share same cache line and performance would suffer. If we really want to save few bytes, we would instead dynamically allocate whole struct request_sock_queue in the future. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29tcp: constify tcp_syn_flood_action() socket argumentEric Dumazet2-7/+7
tcp_syn_flood_action() will soon be called with unlocked socket. In order to avoid SYN flood warning being emitted multiple times, use xchg(). Extend max_qlen_log and synflood_warned fields in struct listen_sock to u32 Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29tcp: constify tcp_v{4|6}_route_req() sock argumentEric Dumazet3-3/+5
These functions do not change the listener socket. Goal is to make sure tcp_conn_request() is not messing with listener in a racy way. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29tcp: cookie_init_sequence() cleanupsEric Dumazet3-18/+12
Some common IPv4/IPv6 code can be factorized. Also constify cookie_init_sequence() socket argument. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29tcp/dccp: constify syn_recv_sock() method sock argumentEric Dumazet7-9/+12
We'll soon no longer hold listener socket lock, these functions do not modify the socket in any way. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29tcp: constify tcp_create_openreq_child() socket argumentEric Dumazet2-2/+4
This method does not touch the listener socket. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29dccp: constify dccp_create_openreq_child() sock argumentEric Dumazet2-2/+2
socket no longer needs to be read/write Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: constify sk_gfp_atomic() sock argumentEric Dumazet1-1/+1
Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29inet: constify __inet_inherit_port() sock argumentEric Dumazet2-2/+2
socket is not touched, make it const. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29inet: constify inet_csk_route_child_sock() socket argumentEric Dumazet2-2/+3
The socket points to the (shared) listener. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29dccp: use inet6_csk_route_req() helperEric Dumazet4-21/+13
Before changing dccp_v6_request_recv_sock() sock argument to const, we need to get rid of security_sk_classify_flow(), and it seems doable by reusing inet6_csk_route_req() helper. We need to add a proto parameter to inet6_csk_route_req(), not assume it is TCP. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29tcp: remove tcp_rcv_state_process() tcp_hdr argumentEric Dumazet5-7/+6
Factorize code to get tcp header from skb. It makes no sense to duplicate code in callers. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29tcp: remove unused len argument from tcp_rcv_state_process()Eric Dumazet5-8/+7
Once we realize tcp_rcv_synsent_state_process() does not use its 'len' argument and we get rid of it, then it becomes clear this argument is no longer used in tcp_rcv_state_process() Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29tcp/dccp: constify send_synack and send_reset socket argumentEric Dumazet7-14/+14
None of these functions need to change the socket, make it const. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: Remove martian_source_keep_err goto labelDavid Ahern1-4/+2
err is initialized to -EINVAL when it is declared. It is not reset until fib_lookup which is well after the 3 users of the martian_source jump. So resetting err to -EINVAL at martian_source label is not needed. Removing that line obviates the need for the martian_source_keep_err label so delete it. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: Swap ordering of tests in ip_route_input_mcAlexander Duyck1-3/+2
This patch just swaps the ordering of one of the conditional tests in ip_route_input_mc. Specifically it swaps the testing for the source address to see if it is loopback, and the test to see if we allow a loopback source address. The reason for swapping these two tests is because it is much faster to test if an address is loopback than it is to dereference several pointers to get at the net structure to see if the use of loopback is allowed. Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net/ipv4: Pass proto as u8 instead of u16 in ip_check_mc_rcuAlexander Duyck2-2/+2
This patch updates ip_check_mc_rcu so that protocol is passed as a u8 instead of a u16. The motivation is just to avoid any unneeded type transitions since some systems will require an instruction to zero extend a u8 field to a u16. Also it makes it a bit more readable as to the fact that protocol is a u8 so there are no byte ordering changes needed to pass it. Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29RESEND: [PATCH v3 net-next] sky2: use random address if EEPROM is badLiviu Dudau1-0/+12
On some embedded systems the EEPROM does not contain a valid MAC address. In that case it is better to fallback to a generated mac address and let init scripts fix the value later. Reported-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> [Changed handcoded setup to use eth_hw_addr_random() and to save new address into HW] Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29netpoll: Drop budget parameter from NAPI polling call hierarchyAlexander Duyck1-12/+11
For some reason we were carrying the budget value around between the various calls to napi->poll. If for example one of the drivers called had a bug in which it returned a non-zero value for work this could result in the budget value becoming negative. Rather than carry around a value of budget that is 0 or less we can instead just loop through and pass 0 to each napi->poll call. If any driver returns a value for work done that is non-zero then we can report that driver and continue rather than allowing a bad actor to make the budget value negative and pass that negative value to napi->poll. Note, the only actual change here is that instead of letting budget become negative we are keeping it at 0 regardless of the value returned for work since it should not be possible for the polling routine to do any actual work with a budget of 0. So if the polling routine returns a non-0 value we are just reporting it and continuing with a budget of 0 rather than letting that work value be subtracted from the budget of 0. Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29bridge: vlan: add per-vlan struct and move to rhashtablesNikolay Aleksandrov9-460/+732
This patch changes the bridge vlan implementation to use rhashtables instead of bitmaps. The main motivation behind this change is that we need extensible per-vlan structures (both per-port and global) so more advanced features can be introduced and the vlan support can be extended. I've tried to break this up but the moment net_port_vlans is changed and the whole API goes away, thus this is a larger patch. A few short goals of this patch are: - Extensible per-vlan structs stored in rhashtables and a sorted list - Keep user-visible behaviour (compressed vlans etc) - Keep fastpath ingress/egress logic the same (optimizations to come later) Here's a brief list of some of the new features we'd like to introduce: - per-vlan counters - vlan ingress/egress mapping - per-vlan igmp configuration - vlan priorities - avoid fdb entries replication (e.g. local fdb scaling issues) The structure is kept single for both global and per-port entries so to avoid code duplication where possible and also because we'll soon introduce "port0 / aka bridge as port" which should simplify things further (thanks to Vlad for the suggestion!). Now we have per-vlan global rhashtable (bridge-wide) and per-vlan port rhashtable, if an entry is added to a port it'll get a pointer to its global context so it can be quickly accessed later. There's also a sorted vlan list which is used for stable walks and some user-visible behaviour such as the vlan ranges, also for error paths. VLANs are stored in a "vlan group" which currently contains the rhashtable, sorted vlan list and the number of "real" vlan entries. A good side-effect of this change is that it resembles how hw keeps per-vlan data. One important note after this change is that if a VLAN is being looked up in the bridge's rhashtable for filtering purposes (or to check if it's an existing usable entry, not just a global context) then the new helper br_vlan_should_use() needs to be used if the vlan is found. In case the lookup is done only with a port's vlan group, then this check can be skipped. Things tested so far: - basic vlan ingress/egress - pvids - untagged vlans - undef CONFIG_BRIDGE_VLAN_FILTERING - adding/deleting vlans in different scenarios (with/without global ctx, while transmitting traffic, in ranges etc) - loading/removing the module while having/adding/deleting vlans - extracting bridge vlan information (user ABI), compressed requests - adding/deleting fdbs on vlans - bridge mac change, promisc mode - default pvid change - kmemleak ON during the whole time Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: mvneta: Statically assign queues to CPUsMaxime Ripard1-1/+142
Since the switch to per-CPU interrupts, we lost the ability to set which CPU was going to receive our RX interrupt, which was now only the CPU on which the mvneta_open function was run. We can now assign our queues to their respective CPUs, and make sure only this CPU is going to handle our traffic. This also paves the road to be able to change that at runtime, and later on to support RSS. [gregory.clement@free-electrons.com]: hardened the CPU hotplug support. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: mvneta: Allow different queuesMaxime Ripard1-69/+11
The mvneta driver allows to change the default RX queue trough the rxq_def kernel parameter. However, the current code doesn't allow to have any value but 0. It is actively checked for in the driver's probe because the drivers makes a number of assumption and takes a number of shortcuts in order to just use that RX queue. Remove these limitations in order to be able to specify any available queue. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: mvneta: Handle per-cpu interruptsMaxime Ripard1-29/+62
Now that our interrupt controller is allowing us to use per-CPU interrupts, actually use it in the mvneta driver. This involves obviously reworking the driver to have a CPU-local NAPI structure, and report for incoming packet using that structure. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: mvneta: Fix CPU_MAP registers initialisationMaxime Ripard1-1/+1
The CPU_MAP register is duplicated for each CPUs at different addresses, each instance being at a different address. However, the code so far was using CONFIG_NR_CPUS to initialise the CPU_MAP registers for each registers, while the SoCs embed at most 4 CPUs. This is especially an issue with multi_v7_defconfig, where CONFIG_NR_CPUS is currently set to 16, resulting in writes to registers that are not CPU_MAP. Fixes: c5aff18204da ("net: mvneta: driver for Marvell Armada 370/XP network unit") Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: <stable@vger.kernel.org> # v3.8+ Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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