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* [MACVLAN]: Allow setting mac address while device is upPatrick McHardy2008-01-28
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [MACVLAN]: Remove unnecessary IFF_UP checkPatrick McHardy2008-01-28
| | | | | | | | Only devices that are UP are in the hash, so macvlan_broadcast() doesn't need to check for IFF_UP. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPCONFIG]: Mark vendor_class_identifier as __initdata.David S. Miller2008-01-28
| | | | | | Based upon a suggestion by Francois Romieu. Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPVS]: Create synced connections with their real stateRumen G. Bogdanovski2008-01-28
| | | | | | | | | | | | | | With this patch the synced connections are created with their real state, which can be changed on the next synchronizations if necessary. This way on fail-over all the connections will be treated according to their actual state, causing no scheduling problems (the active and the nonactive connections have different weights in the schedulers). The backwards compatibility is preserved and the existing tools will show the true connection states even on the backup director. Signed-off-by: Rumen G. Bogdanovski <rumen@voicecho.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPVS]: Flag synced connections and expose them in procRumen G. Bogdanovski2008-01-28
| | | | | | | | | | | This patch labels the sync-created connections with IP_VS_CONN_F_SYNC flag and creates /proc/net/ip_vs_conn_sync to enable monitoring of the origin of the connections, if they are local or created by the synchronization. Signed-off-by: Rumen G. Bogdanovski <rumen@voicecho.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* ieee80211: Add IEEE80211_MAX_FRAME_LEN to linux/ieee80211.hMichael Wu2008-01-28
| | | | | | | | | | | | | | | This patch adds IEEE80211_MAX_FRAME_LEN which is useful for drivers trying to determine how much to allocate for their RX buffers. It also updates the comment on IEEE80211_MAX_DATA_LEN based on revisions in 802.11e. IEEE80211_MAX_FRAG_THRESHOLD and IEEE80211_MAX_RTS_THRESHOLD are also revised due to the new maximum frame size. Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: Accept auto txpower settingMattias Nissler2008-01-28
| | | | | | | | | | | This changes the SIWTXPOWER ioctl to also accept a txpower setting of "automatic". Since mac80211 currently cannot tell drivers to automatically adjust tx power, we select the tx power level of the current channel. While this is kind of a hack, it certainly saves some iwconfig users from headaches. Signed-off-by: Mattias Nissler <mattias.nissler@gmx.de> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETPOLL]: Don't need rx_flags.Stephen Hemminger2008-01-28
| | | | | | | | The rx_flags variable is redundant. Turning rx on/off is done via setting the rx_np pointer. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETPOLL]: Kill NETPOLL_RX_DROP, set but never tested.Stephen Hemminger2008-01-28
| | | | | Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETPOLL]: no need to store local_macStephen Hemminger2008-01-28
| | | | | | | | The local_mac is managed by the network device, no need to keep a spare copy and all the management problems that could cause. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETPOLL]: netpoll_poll() cleanupStephen Hemminger2008-01-28
| | | | | | | | | | Restructure code slightly to improve readability: * dereference device once * change obvious while() loop * let poll_napi() handle null list itself Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETPOLL]: Use skb_queue_purge().Stephen Hemminger2008-01-28
| | | | | | | Use standard routine for flushing queue. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Correct DSACK check placingIlpo Järvinen2008-01-28
| | | | | | | | | | | Previously one of the in-block skip branches was missing it. Also, drop it from tail-fully-processed case because the next iteration will do exactly the same thing, i.e., process the SACK block that contains the DSACK information. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CAN]: Add documentationOliver Hartkopp2008-01-28
| | | | | | | | This patch adds documentation for the PF_CAN protocol family. Signed-off-by: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> Signed-off-by: Urs Thuermann <urs.thuermann@volkswagen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CAN]: Add maintainer entriesOliver Hartkopp2008-01-28
| | | | | | | | This patch adds entries in the CREDITS and MAINTAINERS file for CAN. Signed-off-by: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> Signed-off-by: Urs Thuermann <urs.thuermann@volkswagen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CAN]: Add missing Kbuild entriesOliver Hartkopp2008-01-28
| | | | | | | | | This patch adds the missing Kbuild entries and the missing Kbuild file in include/linux/can for the CAN subsystem. Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CAN]: Fix plain integer definitions in userspace header.Oliver Hartkopp2008-01-28
| | | | | | | | | | | This patch fixes the use of plain integers instead of __u32 in a struct that is visible from kernel space and user space. Thanks to Sam Ravnborg for pointing out the wrong plain int usage. Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CAN]: Add virtual CAN netdevice driverOliver Hartkopp2008-01-28
| | | | | | | | | | This patch adds the virtual CAN bus (vcan) network driver. The vcan device is just a loopback device for CAN frames, no real CAN hardware is involved. Signed-off-by: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> Signed-off-by: Urs Thuermann <urs.thuermann@volkswagen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CAN]: Add broadcast manager (bcm) protocolOliver Hartkopp2008-01-28
| | | | | | | | This patch adds the CAN broadcast manager (bcm) protocol. Signed-off-by: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> Signed-off-by: Urs Thuermann <urs.thuermann@volkswagen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CAN]: Add raw protocolOliver Hartkopp2008-01-28
| | | | | | | | This patch adds the CAN raw protocol. Signed-off-by: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> Signed-off-by: Urs Thuermann <urs.thuermann@volkswagen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CAN]: Add PF_CAN core moduleOliver Hartkopp2008-01-28
| | | | | | | | | | This patch adds the CAN core functionality but no protocols or drivers. No protocol implementations are included here. They come as separate patches. Protocol numbers are already in include/linux/can.h. Signed-off-by: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> Signed-off-by: Urs Thuermann <urs.thuermann@volkswagen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CAN]: Allocate protocol numbers for PF_CANOliver Hartkopp2008-01-28
| | | | | | | | | | This patch adds a protocol/address family number, ARP hardware type, ethernet packet type, and a line discipline number for the SocketCAN implementation. Signed-off-by: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> Signed-off-by: Urs Thuermann <urs.thuermann@volkswagen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: NET_CLS_ROUTE : convert ip_rt_acct to per_cpu variablesEric Dumazet2008-01-28
| | | | | | | | | | | | | ip_rt_acct needs 4096 bytes per cpu to perform some accounting. It is actually allocated as a single huge array [4096*NR_CPUS] (rounded up to a power of two) Converting it to a per cpu variable is wanted to : - Save space on machines were num_possible_cpus() < NR_CPUS - Better NUMA placement (each cpu gets memory on its node) Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Rewrite SACK block processing & sack_recv_cache useIlpo Järvinen2008-01-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Key points of this patch are: - In case new SACK information is advance only type, no skb processing below previously discovered highest point is done - Optimize cases below highest point too since there's no need to always go up to highest point (which is very likely still present in that SACK), this is not entirely true though because I'm dropping the fastpath_skb_hint which could previously optimize those cases even better. Whether that's significant, I'm not too sure. Currently it will provide skipping by walking. Combined with RB-tree, all skipping would become fast too regardless of window size (can be done incrementally later). Previously a number of cases in TCP SACK processing fails to take advantage of costly stored information in sack_recv_cache, most importantly, expected events such as cumulative ACK and new hole ACKs. Processing on such ACKs result in rather long walks building up latencies (which easily gets nasty when window is huge). Those latencies are often completely unnecessary compared with the amount of _new_ information received, usually for cumulative ACK there's no new information at all, yet TCP walks whole queue unnecessary potentially taking a number of costly cache misses on the way, etc.! Since the inclusion of highest_sack, there's a lot information that is very likely redundant (SACK fastpath hint stuff, fackets_out, highest_sack), though there's no ultimate guarantee that they'll remain the same whole the time (in all unearthly scenarios). Take advantage of this knowledge here and drop fastpath hint and use direct access to highest SACKed skb as a replacement. Effectively "special cased" fastpath is dropped. This change adds some complexity to introduce better coveraged "fastpath", though the added complexity should make TCP behave more cache friendly. The current ACK's SACK blocks are compared against each cached block individially and only ranges that are new are then scanned by the high constant walk. For other parts of write queue, even when in previously known part of the SACK blocks, a faster skip function is used (if necessary at all). In addition, whenever possible, TCP fast-forwards to highest_sack skb that was made available by an earlier patch. In typical case, no other things but this fast-forward and mandatory markings after that occur making the access pattern quite similar to the former fastpath "special case". DSACKs are special case that must always be walked. The local to recv_sack_cache copying could be more intelligent w.r.t DSACKs which are likely to be there only once but that is left to a separate patch. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Earlier SACK block verification & simplify access to themIlpo Järvinen2008-01-28
| | | | | Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Create tcp_sacktag_one().Ilpo Järvinen2008-01-28
| | | | | | | | | | Worker function that implements the main logic of the inner-most loop of tcp_sacktag_write_queue(). Idea was originally presented by David S. Miller. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Prior_fackets can be replaced by highest_sack seqIlpo Järvinen2008-01-28
| | | | | Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Make lost retrans detection more self-containedIlpo Järvinen2008-01-28
| | | | | | | | | Highest_sack_end_seq is no longer calculated in the loop, thus it can be pushed to the worker function altogether making that function independent of the sacktag. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Convert highest_sack to sk_buff to allow direct accessIlpo Järvinen2008-01-28
| | | | | | | It is going to replace the sack fastpath hint quite soon... :-) Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: non-FACK SACK follows conservative SACK loss recoveryIlpo Järvinen2008-01-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many assumptions that are true when no reordering or other strange events happen are not a part of the RFC3517. FACK implementation is based on such assumptions. Previously (before the rewrite) the non-FACK SACK was basically doing fast rexmit and then it times out all skbs when first cumulative ACK arrives, which cannot really be called SACK based recovery :-). RFC3517 SACK disables these things: - Per SKB timeouts & head timeout entry to recovery - Marking at least one skb while in recovery (RFC3517 does this only for the fast retransmission but not for the other skbs when cumulative ACKs arrive in the recovery) - Sacktag's loss detection flavors B and C (see comment before tcp_sacktag_write_queue) This does not implement the "last resort" rule 3 of NextSeg, which allows retransmissions also when not enough SACK blocks have yet arrived above a segment for IsLost to return true [RFC3517]. The implementation differs from RFC3517 in these points: - Rate-halving is used instead of FlightSize / 2 - Instead of using dupACKs to trigger the recovery, the number of SACK blocks is used as FACK does with SACK blocks+holes (which provides more accurate number). It seems that the difference can affect negatively only if the receiver does not generate SACK blocks at all even though it claimed to be SACK-capable. - Dupthresh is not a constant one. Dynamical adjustments include both holes and sacked segments (equal to what FACK has) due to complexity involved in determining the number sacked blocks between highest_sack and the reordered segment. Thus it's will be an over-estimate. Implementation note: tcp_clean_rtx_queue doesn't need a lost_cnt tweak because head skb at that point cannot be SACKED_ACKED (nor would such situation last for long enough to cause problems). Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Extend reordering detection to cover CA_Loss partiallyIlpo Järvinen2008-01-28
| | | | | | | | | | | | | | | | | This implements more accurately what is stated in sacktag's overall comment: "Both of these heuristics are not used in Loss state, when we cannot account for retransmits accurately." When CA_Loss state is entered, the state changer ensures that undo_marker is only set if no TCPCB_RETRANS skbs were found, thus having non-zero undo_marker in CA_Loss basically tells that the R-bits still accurately reflect the current state of TCP. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Move !in_sack test earlier in sacktag & reorganize if()sIlpo Järvinen2008-01-28
| | | | | | | | All intermediate conditions include it already, make them simpler as well. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Move sock_valbool_flag to socket.cPavel Emelyanov2008-01-28
| | | | | | | | | | | | | | | | The sock_valbool_flag() helper is used in setsockopt to set or reset some flag on the sock. This helper is required in the net/socket.c only, so move it there. Besides, patch two places in sys_setsockopt() that repeat this helper functionality manually. Since this is not a bugfix, but a trivial cleanup, I prepared this patch against net-2.6.25, but it also applies (with a single offset) to the latest net-2.6. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Use sockfd_lookup_light in the rest of the net/socket.cPavel Emelyanov2008-01-28
| | | | | | | | | | | | Some time ago a sockfd_lookup_light was introduced and most of the socket.c file was patched to use it. However two routines were left - sys_sendto and sys_recvfrom. Patch them as well, since this helper does exactly what these two need. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4] ipconfig: Implement DHCP Class-identifierRainer Jochem2008-01-28
| | | | | | | From : Rainer Jochem <rainer.jochem@mpi-sb.mpg.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Move Qdisc_class_ops and Qdisc_ops in appropriate sections.Eric Dumazet2008-01-28
| | | | | | | | | | Qdisc_class_ops are const, and Qdisc_ops are mostly read. Using "const" and "__read_mostly" qualifiers helps to reduce false sharing. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6] ADDRCONF: Support RFC3484 configurable address selection policy table.YOSHIFUJI Hideaki2008-01-28
| | | | | | | | Policy table is implemented as an RCU linear list since we do not expect large list nor frequent updates. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6] ADDRCONF: Allow address selection policy with ifindex.YOSHIFUJI Hideaki2008-01-28
| | | | | | | This patch allows ifindex to be a key for address selection policy table. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6] ADDRCONF: Rename ipv6_saddr_label() to ipv6_addr_label().YOSHIFUJI Hideaki2008-01-28
| | | | | | | | | This patch renames ipv6_saddr_label() to ipv6_addr_label() because address label is used for both of source address and destination address. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Kill afinfo->nf_post_routingDavid S. Miller2008-01-28
| | | | | | | | | | After changeset: [NETFILTER]: Introduce NF_INET_ hook values It always evaluates to NF_INET_POST_ROUTING. Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: Introduce NF_INET_ hook valuesPatrick McHardy2008-01-28
| | | | | | | | | | | The IPv4 and IPv6 hook values are identical, yet some code tries to figure out the "correct" value by looking at the address family. Introduce NF_INET_* values for both IPv4 and IPv6. The old values are kept in a #ifndef __KERNEL__ section for userspace compatibility. Signed-off-by: Patrick McHardy <kaber@trash.net> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Add async resume support on inputHerbert Xu2008-01-28
| | | | | | | | | This patch adds support for async resumptions on input. To do so, the transform would return -EINPROGRESS and subsequently invoke the function xfrm_input_resume to resume processing. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Remove nhoff from xfrm_inputHerbert Xu2008-01-28
| | | | | | | | | | | | | | | | | | The nhoff field isn't actually necessary in xfrm_input. For tunnel mode transforms we now throw away the output IP header so it makes no sense to fill in the nexthdr field. For transport mode we can now let the function transport_finish do the setting and it knows where the nexthdr field is. The only other thing that needs the nexthdr field to be set is the header extraction code. However, we can simply move the protocol extraction out of the generic header extraction. We want to minimise the amount of info we have to carry around between transforms as this simplifies the resumption process for async crypto. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Make x->lastused an unsigned longHerbert Xu2008-01-28
| | | | | | | | | | | | | | Currently x->lastused is u64 which means that it cannot be read/written atomically on all architectures. David Miller observed that the value stored in it is only an unsigned long which is always atomic. So based on his suggestion this patch changes the internal representation from u64 to unsigned long while the user-interface still refers to it as u64. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Move state lock into x->type->inputHerbert Xu2008-01-28
| | | | | | | | | | | | This patch releases the lock on the state before calling x->type->input. It also adds the lock to the spots where they're currently needed. Most of those places (all except mip6) are expected to disappear with async crypto. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Move integrity stat collection into xfrm_inputHerbert Xu2008-01-28
| | | | | | | | | | | | | | | | Similar to the moving out of the replay processing on the output, this patch moves the integrity stat collectin from x->type->input into xfrm_input. This would eventually allow transforms such as AH/ESP to be lockless. The error value EBADMSG (currently unused in the crypto layer) is used to indicate a failed integrity check. In future this error can be directly returned by the crypto layer once we switch to aead algorithms. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Store xfrm states in security path directlyHerbert Xu2008-01-28
| | | | | | | | | | | | | | As it is xfrm_input first collects a list of xfrm states on the stack before storing them in the packet's security path just before it returns. For async crypto, this construction presents an obstacle since we may need to leave the loop after each transform. In fact, it's much easier to just skip the stack completely and always store to the security path. This is proven by the fact that this patch actually shrinks the code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Merge most of the input pathHerbert Xu2008-01-28
| | | | | | | | | | | | As part of the work on asynchronous cryptographic operations, we need to be able to resume from the spot where they occur. As such, it helps if we isolate them to one spot. This patch moves most of the remaining family-specific processing into the common input code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Add async resume support on outputHerbert Xu2008-01-28
| | | | | | | | | This patch adds support for async resumptions on output. To do so, the transform would return -EINPROGRESS and subsequently invoke the function xfrm_output_resume to resume processing. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Merge most of the output pathHerbert Xu2008-01-28
| | | | | | | | | | | | As part of the work on asynchrnous cryptographic operations, we need to be able to resume from the spot where they occur. As such, it helps if we isolate them to one spot. This patch moves most of the remaining family-specific processing into the common output code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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