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2009-12-04tcp: fix a timewait refcnt raceEric Dumazet1-3/+16
After TCP RCU conversion, tw->tw_refcnt should not be set to 1 in inet_twsk_alloc(). It allows a RCU reader to get this timewait socket, while we not yet stabilized it. Only choice we have is to set tw_refcnt to 0 in inet_twsk_alloc(), then atomic_add() it later, once everything is done. Location of this atomic_add() is tricky, because we dont want another writer to find this timewait in ehash, while tw_refcnt is still zero ! Thanks to Kapil Dakhane tests and reports. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04tcp: connect() race with timewait reuseEric Dumazet4-18/+47
Its currently possible that several threads issuing a connect() find the same timewait socket and try to reuse it, leading to list corruptions. Condition for bug is that these threads bound their socket on same address/port of to-be-find timewait socket, and connected to same target. (SO_REUSEADDR needed) To fix this problem, we could unhash timewait socket while holding ehash lock, to make sure lookups/changes will be serialized. Only first thread finds the timewait socket, other ones find the established socket and return an EADDRNOTAVAIL error. This second version takes into account Evgeniy's review and makes sure inet_twsk_put() is called outside of locked sections. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04be2net: Add support for ethtool self testSuresh R3-0/+223
This patch adds support for ethtool selftest. From: Suresh R <sureshr@serverengines.com> Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04tcp: diag: Dont report negative values for rx queueEric Dumazet2-3/+11
Both netlink and /proc/net/tcp interfaces can report transient negative values for rx queue. ss -> State Recv-Q Send-Q Local Address:Port Peer Address:Port ESTAB -6 6 127.0.0.1:45956 127.0.0.1:3333 netstat -> tcp 4294967290 6 127.0.0.1:37784 127.0.0.1:3333 ESTABLISHED This is because we dont lock socket while computing tp->rcv_nxt - tp->copied_seq, and another CPU can update copied_seq before rcv_next in RX path. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04net: Fix ks8851 snl NULL pointer dereference OopsTristram Ha1-2/+2
This fixes the NULL pointer dereference Oops in the ks8851 snl network driver during transmission. All socket buffers from the queue are processed inside the loop, but new workqueues have been scheduled to run. Signed-off-by: Tristram Ha <Tristram.Ha@micrel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04netdevice: provide common routine for macvlan and vlan operstate managementPatrick Mullaney4-46/+37
Provide common routine for the transition of operational state for a leaf device during a root device transition. Signed-off-by: Patrick Mullaney <pmullaney@novell.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04bnx2: Refine VPD logic.Michael Chan1-28/+21
- Replace magic values with constants - Simplify length calculation and fix a bug Based on valuable feedback from Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04ixgbe: use EIAM to automask MSI-XJesse Brandeburg1-6/+19
when disabling interrupts, driver was writing with IO, this is no necessary because on ixgbe parts the hardware can "oneshot" disable and clear the interrupt. So on 82598/82599 use of EIAM should avoid one posted write per interrupt when in MSI-X mode. This should improve performance and seems to in my limited testing, reduce CPU utilization VERY slightly. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04ixgbe: performance tweaksJesse Brandeburg3-30/+27
drop variables that had cache lines modified in simultaneous hot paths. keep some variables modified on hot paths but make their storage per queue. cache align DMA data buffer start addresses. cache align (padding) some structures that end within a cacheline. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04ixgbe: change default ring sizeJesse Brandeburg1-2/+2
decrease the memory utilization of the tx / rx queue allocation by changing the default ring size to 512 (from 1024). At 1024 rx entries of 2KB each (from 4kB slab) with 16 queues ixgbe was using 64 MB of memory per port, which is not necessary. Users can still change queue lengths with ethtool -k. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04ixgbe: select FCoE Tx queue in ndo_select_queueYi Zou1-10/+14
This removes the Tx queue selection for FCoE traffic from ixgbe_xmit_frame() and does it in the ndo_select_queue() call, moving all Tx queue selection into a single routine. Signed-off-by: Yi Zou <yi.zou@intel.com> Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04ixgbe: use known user priority for FCoE when DCB is enabledYi Zou3-13/+28
Store the user priority for FCoE and use it directly for outgoing FCoE traffic when DCB is enabled. Signed-off-by: Yi Zou <yi.zou@intel.com> Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04usbnet & cdc-ether: Autosuspend for online devicesOliver Neukum3-29/+142
Using remote wakeup and delayed transmission to allow online device to go into usb autosuspend. Minimal alternate support for devices that don't support remote wakeup. Signed-off-by: Oliver Neukum <oliver@neukum.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04cdc-ether: Implement reset_resume()Oliver Neukum1-0/+1
Normal resume can do double duty as reset_resume() for this driver as it keeps no state in the device Signed-off-by: Oliver Neukum <oliver@neukum.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04Merge branch 'master' of ↵David S. Miller14-116/+192
git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-next-2.6
2009-12-04Merge branch 'master' of ↵David S. Miller32-257/+253
git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
2009-12-04bnx2: Update version to 2.0.3.Michael Chan1-2/+2
Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04bnx2: Read firmware version from VPD.Michael Chan1-3/+99
And display it through ethtool -i. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04bnx2: Print warning when unable to allocate the full SKB/page ring.Michael Chan1-2/+10
Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: Benjamin Li <benli@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04bnx2: Dump some state during tx timeout.Michael Chan2-0/+25
To help debug the problem. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: Benjamin Li <benli@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04bnx2: Protect tx timeout reset with rtnl_lock().Michael Chan1-1/+5
To prevent race conditions with other reset events. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04tg3: Update version to 3.105Matt Carlson1-2/+2
This patch updates the tg3 version to 3.105. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04tg3: Clean tg3_init_one()Matt Carlson1-6/+2
Tg3's firmware is no longer loaded from tg3_init_one(). Remove the error path that releases the firmware back to the system. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04tg3: Use pci_read_vpd() instead of private methodMatt Carlson1-23/+12
If the driver needs to use PCI configuration space to read the VPD data, the accesses could collide with the pci_read_vpd() function. This patch converts the driver to use pci_read_vpd() to avoid any potential collisions. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04tg3: Add some VPD preprocessor constantsMatt Carlson3-10/+18
This patch cleans up the VPD code by creating preprocessor definitions and using them in the place of hardcoded constants. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04tg3: Add 57765 asic revMatt Carlson2-19/+62
This patch adds the 57765 asic revision. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04tg3: Make TSS enable independent of MSI-X enableMatt Carlson2-35/+57
The 57765 asic rev has MSI-X capability, but does not support TSS. This patch changes the tx paths so that TSS is explicitly mentioned, rather than implied through the ENABLE_MSIX flag. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04drivers/net: Move && and || to end of previous lineJoe Perches132-805/+799
Only files where David Miller is the primary git-signer. wireless, wimax, ixgbe, etc are not modified. Compile tested x86 allyesconfig only Not all files compiled (not x86 compatible) Added a few > 80 column lines, which I ignored. Existing checkpatch complaints ignored. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-04be2net: Bump up the driver version numberAjit Khaparde1-1/+1
Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03be2net: Support for WoL using magic packet after suspend.Ajit Khaparde6-0/+128
Add support for WOL using Magic Packet after suspend is done. Signed-off-by: Sarveshwar Bandi <sarveshwarb@serverengines.com> Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03be2net: Changes to print fw command opcode when command is failed by controller.Ajit Khaparde1-32/+57
When a firmware command fails, only the failure codes are printed. It is difficult to co-relate this to the actual command that has failed. These changes will now print the command code that has failed. Signed-off-by: Sarveshwar Bandi <sarveshwarb@serverengines.com> Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03net: Batch inet_twsk_purgeEric W. Biederman4-14/+24
This function walks the whole hashtable so there is no point in passing it a network namespace. Instead I purge all timewait sockets from dead network namespaces that I find. If the namespace is one of the once I am trying to purge I am guaranteed no new timewait sockets can be formed so this will get them all. If the namespace is one I am not acting for it might form a few more but I will call inet_twsk_purge again and shortly to get rid of them. In any even if the network namespace is dead timewait sockets are useless. Move the calls of inet_twsk_purge into batch_exit routines so that if I am killing a bunch of namespaces at once I will just call inet_twsk_purge once and save a lot of redundant unnecessary work. My simple 4k network namespace exit test the cleanup time dropped from roughly 8.2s to 1.6s. While the time spent running inet_twsk_purge fell to about 2ms. 1ms for ipv4 and 1ms for ipv6. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03net: Use rcu lookups in inet_twsk_purge.Eric W. Biederman1-15/+24
While we are looking up entries to free there is no reason to take the lock in inet_twsk_purge. We have to drop locks and restart occassionally anyway so adding a few more in case we get on the wrong list because of a timewait move is no big deal. At the same time not taking the lock for long periods of time is much more polite to the rest of the users of the hash table. In my test configuration of killing 4k network namespaces this change causes 4k back to back runs of inet_twsk_purge on an empty hash table to go from roughly 20.7s to 3.3s, and the total time to destroy 4k network namespaces goes from roughly 44s to 3.3s. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03net: Allow fib_rule_unregister to batchEric W. Biederman5-38/+57
Refactor the code so fib_rules_register always takes a template instead of the actual fib_rules_ops structure that will be used. This is required for network namespace support so 2 out of the 3 callers already do this, it allows the error handling to be made common, and it allows fib_rules_unregister to free the template for hte caller. Modify fib_rules_unregister to use call_rcu instead of syncrhonize_rcu to allw multiple namespaces to be cleaned up in the same rcu grace period. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03netns: Add an explicit rcu_barrier to unregister_pernet_{device|subsys}Eric W. Biederman1-2/+6
This allows namespace exit methods to batch work that comes requires an rcu barrier using call_rcu without having to treat the unregister_pernet_operations cases specially. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03net: Allow xfrm_user_net_exit to batch efficiently.Eric W. Biederman2-8/+11
xfrm.nlsk is provided by the xfrm_user module and is access via rcu from other parts of the xfrm code. Add xfrm.nlsk_stash a copy of xfrm.nlsk that will never be set to NULL. This allows the synchronize_net and netlink_kernel_release to be deferred until a whole batch of xfrm.nlsk sockets have been set to NULL. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03net: Move network device exit batchingEric W. Biederman2-24/+25
Move network device exit batching from a special case in net_namespace.c to using common mechanisms in dev.c Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03net: Add support for batching network namespace cleanupsEric W. Biederman2-61/+63
- Add exit_list to struct net to support building lists of network namespaces to cleanup. - Add exit_batch to pernet_operations to allow running operations only once during a network namespace exit. Instead of once per network namespace. - Factor opt ops_exit_list and ops_exit_free so the logic with cleanup up a network namespace does not need to be duplicated. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03ipv4 05/05: add sysctl to accept packets with local source addressesPatrick McHardy6-4/+17
commit 8ec1e0ebe26087bfc5c0394ada5feb5758014fc8 Author: Patrick McHardy <kaber@trash.net> Date: Thu Dec 3 12:16:35 2009 +0100 ipv4: add sysctl to accept packets with local source addresses Change fib_validate_source() to accept packets with a local source address when the "accept_local" sysctl is set for the incoming inet device. Combined with the previous patches, this allows to communicate between multiple local interfaces over the wire. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03net 04/05: fib_rules: allow to delete local rulePatrick McHardy3-3/+3
commit d124356ce314fff22a047ea334379d5105b2d834 Author: Patrick McHardy <kaber@trash.net> Date: Thu Dec 3 12:16:35 2009 +0100 net: fib_rules: allow to delete local rule Allow to delete the local rule and recreate it with a higher priority. This can be used to force packets with a local destination out on the wire instead of routing them to loopback. Additionally this patch allows to recreate rules with a priority of 0. Combined with the previous patch to allow oif classification, a socket can be bound to the desired interface and packets routed to the wire like this: # move local rule to lower priority ip rule add pref 1000 lookup local ip rule del pref 0 # route packets of sockets bound to eth0 to the wire independant # of the destination address ip rule add pref 100 oif eth0 lookup 100 ip route add default dev eth0 table 100 Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03net 03/05: fib_rules: add oif classificationPatrick McHardy3-1/+37
commit 68144d350f4f6c348659c825cde6a82b34c27a91 Author: Patrick McHardy <kaber@trash.net> Date: Thu Dec 3 12:05:25 2009 +0100 net: fib_rules: add oif classification Support routing table lookup based on the flow's oif. This is useful to classify packets originating from sockets bound to interfaces differently. The route cache already includes the oif and needs no changes. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03net 02/05: fib_rules: rename ifindex/ifname/FRA_IFNAME to ↵Patrick McHardy3-23/+25
iifindex/iifname/FRA_IIFNAME commit 229e77eec406ad68662f18e49fda8b5d366768c5 Author: Patrick McHardy <kaber@trash.net> Date: Thu Dec 3 12:05:23 2009 +0100 net: fib_rules: rename ifindex/ifname/FRA_IFNAME to iifindex/iifname/FRA_IIFNAME The next patch will add oif classification, rename interface related members and attributes to reflect that they're used for iif classification. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03net 01/05: fib_rules: rearrange struct fib_rulePatrick McHardy1-1/+1
commit b8952893d5d86f69c4e499d191b98c6658f64b0f Author: Patrick McHardy <kaber@trash.net> Date: Thu Dec 3 12:05:22 2009 +0100 net: fib_rules: rearrange struct fib_rule The ifname member is only used to resolve interface names and is not needed during rule lookups. The target and ctarget members however are used during rule lookups and are currently located in a second cacheline. Move ifname further to the end to make sure both target and ctarget are located in the same cacheline as other members used during rule lookups. The layout on 64 bit changes from: struct fib_rule { ... u32 table; /* 56 4 */ u8 action; /* 60 1 */ /* XXX 3 bytes hole, try to pack */ /* --- cacheline 1 boundary (64 bytes) --- */ u32 target; /* 64 4 */ /* XXX 4 bytes hole, try to pack */ struct fib_rule * ctarget; /* 72 8 */ struct rcu_head rcu; /* 80 16 */ struct net * fr_net; /* 96 8 */ }; to: struct fib_rule { ... u32 table; /* 40 4 */ u8 action; /* 44 1 */ /* XXX 3 bytes hole, try to pack */ u32 target; /* 48 4 */ /* XXX 4 bytes hole, try to pack */ struct fib_rule * ctarget; /* 56 8 */ /* --- cacheline 1 boundary (64 bytes) --- */ char ifname[16]; /* 64 16 */ struct rcu_head rcu; /* 80 16 */ struct net * fr_net; /* 96 8 */ }; Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03Bluetooth: Declare MODULE_FIRMWARE for Marvell SDIO driverBen Hutchings1-0/+2
Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-12-03Bluetooth: Add RFCOMM option to use L2CAP ERTM modeMarcel Holtmann1-0/+6
By default the RFCOMM layer would still use L2CAP basic mode. For testing purposes this option enables RFCOMM to select enhanced retransmission mode. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-12-03Bluetooth: Add L2CAP option for max transmit valueMarcel Holtmann1-1/+5
For testing purposes it is important to modify the max transmit value. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-12-03Bluetooth: Enable auto sleep mode for btmrvl driverAmitkumar Karwar3-22/+36
The auto sleep mode for btmrvl driver is not enabled by default. This patch enables auto sleep mode when card is probed. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-12-03Bluetooth: Fix 'SendRRorRNR' to send the ReqSeq valueGustavo F. Padovan1-0/+2
SendRRorRNR needs to acknowledge received I-frames (actually every packet needs to acknowledge received I-frames by sending the proper packet sequence number), so ReqSeq is set to the next I-frame number sequence to be pulled by the reassembly function. SendRRorRNR tells the remote side about local busy conditions, it sends a Receiver Ready frame if local busy is false or a Receiver Not Ready if local busy is true. ReqSeq is the packet's field to send the number of the acknowledged packets. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-12-03Bluetooth: Implement RejActioned flagGustavo F. Padovan2-3/+36
RejActioned is used to prevent retransmission when a entity is on the WAIT_F state, i.e., waiting for a frame with F-bit set due local busy condition or a expired retransmission timer. (When these two events raise they send a frame with the Poll bit set and enters in the WAIT_F state to wait for a frame with the Final bit set.) The local entity doesn't send I-frames(the data frames) until the receipt of a frame with F-bit set. When that happens it also set RejActioned to false. RejActioned is a mandatory feature of ERTM spec. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-12-03Bluetooth: Fix sending ReqSeq on I-framesGustavo F. Padovan2-3/+6
As specified by ERTM spec an ERTM channel can acknowledge received I-frames(the data frames) by sending an I-frame with the proper ReqSeq value (i.e. ReqSeq is set to BufferSeq). Until now we aren't setting the ReqSeq value on I-frame control bits. That way we can save sending S-frames(Supervise frames) only to acknowledge receipt of I-frames. It is very helpful to the full-duplex channel. ReqSeq is the packet sequence number sent in an acknowledgement frame to acknowledge receipt of frames up to (ReqSeq - 1). BufferSeq controls the receiver buffer, it is used to delay acknowledgement of new frames to not cause buffer overflow. BufferSeq value is not increased until frames are pulled by reassembly function. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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