- 28 Jan, 2008 40 commits
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Johannes Berg authored
There are various decisions influencing the decision whether to buffer a frame for after the next DTIM beacon. The "do we have stations in PS mode" condition cannot be tested by the driver so mac80211 has to do that. To ease driver writing for hardware that can buffer frames until after the next DTIM beacon, introduce a new txctl flag telling the driver to buffer a specific frame. While at it, restructure and comment the code for multicast buffering and remove spurious "inline" directives. Signed-off-by:
Johannes Berg <johannes@sipsolutions.net> Cc: Michael Buesch <mb@bu3sch.de> Signed-off-by:
John W. Linville <linville@tuxdriver.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Johannes Berg authored
The function is only used locally. Signed-off-by:
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Johannes Berg authored
The previous patch left only one user of the ieee80211_is_eapol() function and that user can be eliminated easily by introducing a new "frame is EAPOL" flag to handle the frame specially (we already have this information) instead of doing the (expensive) ieee80211_is_eapol() all the time. Also, allow unencrypted frames to be sent when they are injected. Signed-off-by:
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Johannes Berg authored
This cleans up the eapol frame handling and some related code in the receive and transmit paths. After this patch * EAPOL frames addressed to us or the EAPOL group address are always accepted regardless of whether they are encrypted or not * other frames from a station are dropped if PAE is enabled and the station is not authorized * unencrypted frames (except the EAPOL frames above) are dropped if drop_unencrypted is enabled * some superfluous code that eth_type_trans handles anyway is gone * port control is done for transmitted packets Signed-off-by:
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Mattias Nissler authored
This adds all the tunable parameters used by rc80211_pid to debugfs for easy testing and tuning. Signed-off-by:
Mattias Nissler <mattias.nissler@gmx.de> Signed-off-by:
Stefano Brivio <stefano.brivio@polimi.it> Signed-off-by:
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Mattias Nissler authored
This adds a new debugfs file from which rate control relevant events can be read one event per line. The output includes the current time, so graphs can be created showing the rate control parameters. This helps in evaluating and tuning rate control parameters. While at it, we split headers and code for better readability. Signed-off-by:
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Stefano Brivio authored
This patch introduces a PID sharpening factor for faster response after association and low activity events. Signed-off-by:
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Stefano Brivio authored
This patch introduces a learning algorithm in order for the PID controller to learn how to map adjustment values to rates. This is better described in code comments. Signed-off-by:
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Stefano Brivio authored
This makes the new PID TX rate control algorithm the default instead of the rc80211_simple rate control algorithm. The simple algorithm was flawed in several ways: it wasn't responsive at all and didn't age the information it was relying on properly. The PID algorithm allows us to tune characteristics such as responsiveness by adjusting parameters and was found to generally behave better. The default algorithm can be overridden to select simple instead. Which ever algorithm is the default is included as part of the mac80211 module automatically. The other algorithm (simple vs. pid) can be selected for inclusion as well. If EMBEDDED is selected then the choice is available to have no default specified and neither algorithm included in mac80211. The default algorithm can be set through a modparam. While at it, mark rc80211-simple as deprecated, and schedule it for removal. Signed-off-by:
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Eric Dumazet authored
Because 'free_space' variable in __tcp_select_window() is signed, expression (free_space / 2) forces compiler to emit an integer divide. This can be changed to a plain right shift, less expensive. Signed-off-by:
Eric Dumazet <dada1@cosmosbay.com> Signed-off-by:
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Paul Moore authored
This patch fixes a number of small but potentially troublesome things in the XFRM/IPsec code: * Use the 'audit_enabled' variable already in include/linux/audit.h Removed the need for extern declarations local to each XFRM audit fuction * Convert 'sid' to 'secid' everywhere we can The 'sid' name is specific to SELinux, 'secid' is the common naming convention used by the kernel when refering to tokenized LSM labels, unfortunately we have to leave 'ctx_sid' in 'struct xfrm_sec_ctx' otherwise we risk breaking userspace * Convert address display to use standard NIP* macros Similar to what was recently done with the SPD audit code, this also also includes the removal of some unnecessary memcpy() calls * Move common code to xfrm_audit_common_stateinfo() Code consolidation from the "less is more" book on software development * Proper spacing around commas in function arguments Minor style tweak since I was already touching the code Signed-off-by:
Paul Moore <paul.moore@hp.com> Acked-by:
James Morris <jmorris@namei.org> Signed-off-by:
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Masahide NAKAMURA authored
Signed-off-by:
Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by:
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Masahide NAKAMURA authored
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Masahide NAKAMURA authored
This statistics is shown factor dropped by transformation at /proc/net/xfrm_stat for developer. It is a counter designed from current transformation source code and defined as linux private MIB. See Documentation/networking/xfrm_proc.txt for the detail. Signed-off-by:
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Masahide NAKAMURA authored
Disable spin_lock during xfrm_type.input() function. Follow design as IPsec inbound does. Signed-off-by:
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Masahide NAKAMURA authored
IPv6 specific thing is wrongly removed from transformation at net-2.6.25. This patch recovers it with current design. o Update "path" of xfrm_dst since IPv6 transformation should care about routing changes. It is required by MIPv6 and off-link destined IPsec. o Rename nfheader_len which is for non-fragment transformation used by MIPv6 to rt6i_nfheader_len as IPv6 name space. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Ilpo Järvinen authored
I'd say that most of what tcp_tso_should_defer had in between there was dead code because of this. Signed-off-by:
Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by:
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Matt Carlson authored
This patch updates the version number to 3.87. Signed-off-by:
Matt Carlson <mcarlson@broadcom.com> Signed-off-by:
Michael Chan <mchan@broadcom.com> Signed-off-by:
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Matt Carlson authored
This patch does three things. It modifies tg3_setup_flow_control() to use the administrator requested flow control settings if autonegotiation is turned off. It slightly modifies the tg3_setup_fiber_mii_phy() function to account for this new use case. And finally, it does the same for tg3_setup_copper_phy(). The copper modifications are more than a small multi-line change. The new code makes an attempt to avoid a link renegotiation if the link is active at half duplex and the only difference between the current advertised settings and requested advertised settings is the flow control advertisements. Signed-off-by:
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Matt Carlson authored
This patch modifies the software autoneg code to use the administrator specified flow control parameters. Since the autonegotiation code uses alternative flow control enumerations, the 1000-BaseX utility functions are used and code was added to convert the definitions to and from the alternate enumerations. Signed-off-by:
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Matt Carlson authored
This patch modifies the 5704S hardware autoneg code to use the administrator specified flow control parameters. Since the 5704S uses device specific flow control enumerations, the 1000-BaseX utility functions are used and code was added to convert the definitions to and from the proprietary enumerations. Signed-off-by:
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Matt Carlson authored
This patch replaces magic values with preprocessor definitions for the sg_dig_ctrl and sg_dig_status registers. This is preparatory work for the next patch. Signed-off-by:
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Matt Carlson authored
This patch adds two functions designed to convert abstract TX & RX flow control parameters to 1000-BaseT and 1000-BaseX autonegotiation advertisements. Code that uses standard definitions which statically advertises TX & RX flow control has been replaced with code that configures the advertisements based on administrator dictated preferences. Signed-off-by:
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Matt Carlson authored
This patch adds two new utility functions to resolve flow control. One function resolves flow control based on 1000-BaseT register definitions. The other resolves flow control based on 1000-Base X register definitions. Signed-off-by:
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Matt Carlson authored
This patch removes the TX and RX flow control flags from tg3_flags and adds two new flow control variables, flowctrl and active_flowctrl. Signed-off-by:
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Pavel Emelyanov authored
The neigh_del_timer() looks sane - it removes the timer and (conditionally) puts the neighbor. I expected, that the neigh_add_timer() is symmetrical to the del one - i.e. it holds the neighbor and arms the timer - but it turned out that it was not so. I think, that making them look symmetrical makes the code more readable. Signed-off-by:
Pavel Emelyanov <xemul@openvz.org> Signed-off-by:
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Pavel Emelyanov authored
This one is not that big, but is widely used: saves 1200 bytes from net/ipv4/built-in.o add/remove: 1/0 grow/shrink: 1/12 up/down: 97/-1300 (-1203) function old new delta inet_twsk_put - 87 +87 __inet_lookup_listener 274 284 +10 tcp_sacktag_write_queue 2255 2254 -1 tcp_time_wait 482 411 -71 __inet_check_established 796 722 -74 tcp_v4_err 973 898 -75 __inet_twsk_kill 230 154 -76 inet_twsk_deschedule 180 103 -77 tcp_v4_do_rcv 462 384 -78 inet_hash_connect 686 607 -79 inet_twdr_do_twkill_work 236 150 -86 inet_twdr_twcal_tick 395 307 -88 tcp_v4_rcv 1744 1480 -264 tcp_timewait_state_process 975 644 -331 Export it for ipv6 module. Signed-off-by:
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Pavel Emelyanov authored
This is -700 bytes from the net/ipv4/built-in.o add/remove: 1/0 grow/shrink: 1/3 up/down: 340/-1040 (-700) function old new delta __inet_lookup_established - 339 +339 tcp_sacktag_write_queue 2254 2255 +1 tcp_v4_err 1304 973 -331 tcp_v4_rcv 2089 1744 -345 tcp_v4_do_rcv 826 462 -364 Exporting is for dccp module (used via e.g. inet_lookup). Signed-off-by:
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Pavel Emelyanov authored
This one is used in quite many places in the networking code and seems to big to be inline. After the patch net/ipv4/build-in.o loses ~650 bytes: add/remove: 2/0 grow/shrink: 0/5 up/down: 461/-1114 (-653) function old new delta __inet_hash_nolisten - 282 +282 __inet_hash - 179 +179 tcp_sacktag_write_queue 2255 2254 -1 __inet_lookup_listener 284 274 -10 tcp_v4_syn_recv_sock 755 493 -262 tcp_v4_hash 389 35 -354 inet_hash_connect 1086 599 -487 This version addresses the issue pointed by Eric, that while being inline this function was optimized by gcc in respect to the 'listen_possible' argument. Signed-off-by:
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Vlad Yasevich authored
The Security Considerations section of RFC 5061 has the following text: If an SCTP endpoint that supports this extension receives an INIT that indicates that the peer supports the ASCONF extension but does NOT support the [RFC4895] extension, the receiver of such an INIT MUST send an ABORT in response. Note that an implementation is allowed to silently discard such an INIT as an option as well, but under NO circumstance is an implementation allowed to proceed with the association setup by sending an INIT-ACK in response. An implementation that receives an INIT-ACK that indicates that the peer does not support the [RFC4895] extension MUST NOT send the COOKIE-ECHO to establish the association. Instead, the implementation MUST discard the INIT-ACK and report to the upper- layer user that an association cannot be established destroying the Transmission Control Block (TCB). Follow the recomendations. Signed-off-by:
Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by:
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Vlad Yasevich authored
ADD-IP spec has a special case for processing ABORTs: F4) ... One special consideration is that ABORT Chunks arriving destined to the IP address being deleted MUST be ignored (see Section 5.3.1 for further details). Check if the address we received on is in the DEL state, and if so, ignore the ABORT. Signed-off-by: -
Vlad Yasevich authored
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Vlad Yasevich authored
The processing of the ASCONF chunks has changed a lot in the spec. New items are: 1. A list of ASCONF-ACK chunks is now cached 2. The source of the packet is used in response. 3. New handling for unexpect ASCONF chunks. Signed-off-by: -
Vlad Yasevich authored
C4) Both ASCONF and ASCONF-ACK Chunks MUST NOT be sent in any SCTP state except ESTABLISHED, SHUTDOWN-PENDING, SHUTDOWN-RECEIVED, and SHUTDOWN-SENT. Signed-off-by: -
Vlad Yasevich authored
ADD-IP draft section 5.2 specifies that if an association can not be found using the source and destination of the IP packet, then, if the packet contains ASCONF chunks, the Address Parameter TLV should be used to lookup an association. Signed-off-by:
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Vlad Yasevich authored
The ADD-IP "Set Primary IP Address" parameter is allowed in the INIT/INIT-ACK exchange. Allow processing of this parameter during the INIT/INIT-ACK. Signed-off-by:
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Vlad Yasevich authored
The Address Parameter in the parameter list of the ASCONF chunk may be a wildcard address. In this case special processing is required. For the 'add' case, the source IP of the packet is added. In the 'del' case, all addresses except the source IP of packet are removed. In the "mark primary" case, the source address is marked as primary. Signed-off-by:
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Vlad Yasevich authored
Now that we support AUTH, discard unauthenticated ASCONF and ASCONF ACK chunks as mandated in the ADD-IP spec. Signed-off-by:
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Herbert Xu authored
It appears that I've managed to create two different functions both called xfrm6_tunnel_output. This is because we have the plain tunnel encapsulation named xfrmX_tunnel as well as the tunnel-mode encapsulation which lives in the files xfrmX_mode_tunnel.c. This patch renames functions from the latter to use the xfrmX_mode_tunnel prefix to avoid name-space conflicts. Signed-off-by:
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Mattias Nissler authored
Add a new rate control algorithm based on a PID controller. It samples the percentage of failed frames over time, feeds the result into the controller and uses its output to control the TX rate. Signed-off-by:
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