Commit graph

454939 commits

Author SHA1 Message Date
Jes Sorensen
e0ea5c8e66 staging: rtl8723au: Remove unused #defines WEP_KEY_LEN and MGMT_QUEUE_NUM
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:53 -07:00
Jes Sorensen
bf51cb6780 staging: rtl8723au: Remove duplicate defines of IEEE80211_HT_PARAM_CHA_SEC_*
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:53 -07:00
Jes Sorensen
2a907fe46b staging: rtl8723au: Remove obsolete rtw_set_fixed_ie23a()
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:53 -07:00
Jes Sorensen
a491548d66 staging: rtl8723au: issue_action_BA23a(): Use struct ieee80211_mgmt to build action frames
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:53 -07:00
Jes Sorensen
cc531f6154 staging: rtl8723au: ioctl_cfg80211.c: Use struct ieee80211_mgmt to build mgmt frame
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:53 -07:00
Jes Sorensen
2e74d336ed staging: rtl8723au: Let cfg80211 handle public action management frames
The driver shouldn't be dealing with public action management frames.
Let these go directly to the cfg80211 layer which can defer them to
userland if needed.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:53 -07:00
Jes Sorensen
372713a942 staging: rtl8723au: Do not xmit BSS Coexistence management action frames
The driver should not be issuing BSS Coexistence management action
frames when scanning. This isn't required by the spec, and if needed,
these should come from wpa_s instead.

Recommended by Johannes Berg.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:53 -07:00
Jes Sorensen
85d5120d52 staging: rtl8723au: issue_action_BSSCoexistPacket(): Use struct ieee80211_mgmt
This gets rid of the rtw_set_fixed_ie23a() usage here. Note that this
abuses ieee80211_mgmt.u.action.u.chan_switch for now, since the
correct defines are currently missing, and this one matches.

Need to fix up the definitions in ieee80211.h and afterwards fix it up
here.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:53 -07:00
Jes Sorensen
7ed61b5b30 staging: rtl8723au: issue_action_spct_ch_switch23a(): Use struct ieee80211_mgmt
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:53 -07:00
Jes Sorensen
f89547b651 staging: rtl8723au: _issue_deauth(): Use struct ieee80211_mgmt to build frame
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:53 -07:00
Jes Sorensen
c144c3bbd5 staging: rtl8723au: issue_assocrsp(): Use struct ieee80211_mgmt instead of rtw_set_fixed_ie23a()
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:48 -07:00
Jes Sorensen
88e06f0200 staging: rtl8723au: issue_auth(): Convert to using struct ieee80211_mgmt
This reduces the dependency of rtw_set_fixed_ie23a() which is
scheduled to go away.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:48 -07:00
Jes Sorensen
47e5d2f26d staging: rtl8723au: Make struct htpriv.ampdu_enable a bool
Be consistent in parsing it's value

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:47 -07:00
Jes Sorensen
6a5f657db5 staging: rtl8723au: Be consistent in how htpriv.ht_option is checked
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:47 -07:00
Jes Sorensen
6f765c20ca staging: rtl8723au: Make struct ht_priv.ht_option a bool
Match the return type of rtw_restructure_ht_ie23a() accordingly

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:47 -07:00
Jes Sorensen
c9324c8853 staging: rtl8723au: Remove WMM_ defines
Only one is used, and only describes the size of an array defined in a
local function. Use sizeof() in the local function to deobfuscate it.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:47 -07:00
Jes Sorensen
e1d143b495 staging: rtl8723au: OnAssocRsp23a(): Use cfg80211_* to parse IEs
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:47 -07:00
Jes Sorensen
3cdf27730a staging: rtl8723au: Make WMM_param_handler23a() and HT_caps_handler23a() take a const u8 *
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:47 -07:00
Jes Sorensen
0cac3f9ee4 staging: rtl8723au: Declare rtw_get_wpa{2, }_cipher_suite() static
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:47 -07:00
Jes Sorensen
0b548a5c4d staging: rtl8723au: Remove obsolete rtw_get_sec_ie23a()
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:47 -07:00
Jes Sorensen
77953edfac staging: rtl8723au: rtw_wlan_util.c: Use cfg80211_* to determine crypto
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:51:47 -07:00
Jes Sorensen
54ddd2266a staging: rtl8723au: rtw_get_bcn_info23a(): Use cfg80211_* to obtain crypto info
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 13:38:19 -07:00
Jes Sorensen
b277541584 staging: rtl8723au: rtw_update_ht_cap23a(): Use correct mask when determining 40MHz channel location
commit 4dc5f8bab2
Author: Jes Sorensen <Jes.Sorensen@redhat.com>
Date:   Tue May 27 13:43:12 2014 +0200

    staging: rtl8723au: Eliminate struct HT_info_element

    Yet another duplicate version of struct ieee80211_ht_operation

    Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>

introduced a bad error, applying the wrong value as the mask when
determining the location of the 40MHz channel, effectively making it
always determining it as not present. This caused hangs and delays
when running in 40MHz channel mode.

This should get it right.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:37:34 -07:00
Jes Sorensen
c2b8047aff staging: rtl8723au: collect_bss_info23a(): ieee80211_mgmt capab_info is little endian
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:35:41 -07:00
Jes Sorensen
5b124b1aa2 staging: rtl8723au: collect_bss_info23a(): Collect beacon_interval correct
Only retrieve beacon_interval from frames where it is present. This
avoids setting BeaconPeriod to garbage for other frame types.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:35:41 -07:00
Jes Sorensen
7882ef454c staging: rtl8723au: Rewrite update_beacon23a_info() tto use cfg80211_find_ie()
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:35:40 -07:00
Jes Sorensen
e3916153ea staging: rtl8723au: Remmove buddy-adapter linking
This sort of stuff should be handled by the bonding driver

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:35:40 -07:00
Jes Sorensen
a665bcc244 staging: rtl8723au: rtw_check_bcn_info23a(): Use capability bit define
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:35:40 -07:00
Jes Sorensen
ed08b4de7c staging: rtl8723au: Don't carry ht_cap_info and ht_param in struct wlan_bcn_info
These were just stored to check whether the beacon info had changed
and print a debug message in this case. If we ever need this again, we
can determine this change differently.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:35:40 -07:00
Jes Sorensen
4dc5f8bab2 staging: rtl8723au: Eliminate struct HT_info_element
Yet another duplicate version of struct ieee80211_ht_operation

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:35:40 -07:00
Jes Sorensen
6594c965ca staging: rtl8723au: Use correct struct for WLAN_EID_HT_CAPABILITY
WLAN_EID_HT_CAPABILITY carries a struct ieee80211_ht_operation - use
the right struct instead of a self invented one.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:35:40 -07:00
Jes Sorensen
65be27da49 staging: rtl8723au: Use struct ieee80211_ht_cap and associated #defines
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:35:40 -07:00
Jes Sorensen
198e95d548 staging: rtl8723au: Use struct ieee80211_mcs_info to describe MCS information
The original RTL code defined the MCS information as a 16 byte array
and blindly applied it's masking over the full array, ignoring the
fact that only the first 10 bytes describe the rx_mask and the rest
are different fields.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:35:40 -07:00
Jes Sorensen
8b3d9cde7d staging: rtl8723au: rtw_mlme.c: Remove some tab and parenthesis abuse
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:35:40 -07:00
Jes Sorensen
d54239a485 staging: rtl8723au: rtw_mlme_ext.c: Fix up some of the bad formatting
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-18 12:35:40 -07:00
Wahib Faizi
25da2290ea staging: usbip: usbip_host_driver.c: fix line over 80 characters
Fix coding style issue "line over 80 characters"
detected by checkpatch.pl in usbip_host_driver.c.

Signed-off-by: Wahib Faizi <wahibfaizi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-17 15:42:39 -07:00
Wahib Faizi
da87dba817 staging: usbip: usbip_host_driver.c: avoid assignment in if
Fix coding style issue "do not use assignment in if condition"
detected by checkpatch.pl in usbip_host_driver.c.

Signed-off-by: Wahib Faizi <wahibfaizi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-17 15:42:39 -07:00
Jes Sorensen
0c248b621b staging: rtl8723au: Reference correct firmwarefiles with MODULE_FIRMWARE()
Add missing firmware references, and request the correct one.

Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-17 15:39:02 -07:00
Jes Sorensen
6601e31fdf staging: rtl8723au: Request correct firmware file for A-cut parts
The filename requested by the driver didn't match what we had sitting
in /lib/firmware/

Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-17 15:39:02 -07:00
Jes Sorensen
4aea177681 staging: rtl8723au: Remove obsolete rtw_get_wps_ie23a()
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-17 15:30:33 -07:00
Jes Sorensen
715a8a7493 staging: rtl8723au: rtw_ap.c: Convert from rtw_get_wps_ie23a() to cfg80211_find_vendor_ie()
Some of this is hackish, but so was the original code. This needs to
be cleaned up eventually.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-17 15:30:33 -07:00
Jes Sorensen
d3797af488 staging: rtl8723au: ioctl_cfg80211.c: Convert rtw_get_wps_ie23a() to cfg80211_find_vendor_ie()
Given that the IE len is stored in a u8, there is no point having a
512 buffer to store it, nor check if the size exceeds this size.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-17 15:30:33 -07:00
Jes Sorensen
9c40e1230e staging: rtl8723au: rtw_mlme.c: Convert rtw_get_wps_ie23a() to cfg80211_find_vendor_ie()
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-17 15:30:33 -07:00
Jes Sorensen
6e5e41840e staging: rtl8723au: rtw_mlme_ext.c: Convert rtw_get_wps_ie23a() to cfg80211_find_vendor_ie()
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-17 15:30:33 -07:00
Jes Sorensen
fbf380cf9a staging: rtl8723au: rtw_get_wps_ie23a(): Remove unused dest pointer wps_ie
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-17 15:30:33 -07:00
Linus Torvalds
7171511eae Linux 3.16-rc1 2014-06-15 17:45:28 -10:00
Linus Torvalds
a9be22425e Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix checksumming regressions, from Tom Herbert.

 2) Undo unintentional permissions changes for SCTP rto_alpha and
    rto_beta sysfs knobs, from Denial Borkmann.

 3) VXLAN, like other IP tunnels, should advertize it's encapsulation
    size using dev->needed_headroom instead of dev->hard_header_len.
    From Cong Wang.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  net: sctp: fix permissions for rto_alpha and rto_beta knobs
  vxlan: Checksum fixes
  net: add skb_pop_rcv_encapsulation
  udp: call __skb_checksum_complete when doing full checksum
  net: Fix save software checksum complete
  net: Fix GSO constants to match NETIF flags
  udp: ipv4: do not waste time in __udp4_lib_mcast_demux_lookup
  vxlan: use dev->needed_headroom instead of dev->hard_header_len
  MAINTAINERS: update cxgb4 maintainer
2014-06-15 16:37:03 -10:00
Linus Torvalds
dd1845af24 This pull request contains the second half the of the clk changes for
3.16. They are simply fixes and code refactoring for the OMAP clock
 drivers. The sunxi clock driver changes include splitting out the one
 mega-driver into several smaller pieces and adding support for the A31
 SoC clocks.
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Merge tag 'clk-for-linus-3.16-part2' of git://git.linaro.org/people/mike.turquette/linux

Pull more clock framework updates from Mike Turquette:
 "This contains the second half the of the clk changes for 3.16.

  They are simply fixes and code refactoring for the OMAP clock drivers.
  The sunxi clock driver changes include splitting out the one
  mega-driver into several smaller pieces and adding support for the A31
  SoC clocks"

* tag 'clk-for-linus-3.16-part2' of git://git.linaro.org/people/mike.turquette/linux: (25 commits)
  clk: sunxi: document PRCM clock compatible strings
  clk: sunxi: add PRCM (Power/Reset/Clock Management) clks support
  clk: sun6i: Protect SDRAM gating bit
  clk: sun6i: Protect CPU clock
  clk: sunxi: Rework clock protection code
  clk: sunxi: Move the GMAC clock to a file of its own
  clk: sunxi: Move the 24M oscillator to a file of its own
  clk: sunxi: Remove calls to clk_put
  clk: sunxi: document new A31 USB clock compatible
  clk: sunxi: Implement A31 USB clock
  ARM: dts: OMAP5/DRA7: use omap5-mpu-dpll-clock capable of dealing with higher frequencies
  CLK: TI: dpll: support OMAP5 MPU DPLL that need special handling for higher frequencies
  ARM: OMAP5+: dpll: support Duty Cycle Correction(DCC)
  CLK: TI: clk-54xx: Set the rate for dpll_abe_m2x2_ck
  CLK: TI: Driver for DRA7 ATL (Audio Tracking Logic)
  dt:/bindings: DRA7 ATL (Audio Tracking Logic) clock bindings
  ARM: dts: dra7xx-clocks: Correct name for atl clkin3 clock
  CLK: TI: gate: add composite interface clock to OMAP2 only build
  ARM: OMAP2: clock: add DT boot support for cpufreq_ck
  CLK: TI: OMAP2: add clock init support
  ...
2014-06-15 16:02:20 -10:00
Linus Torvalds
b55b390202 Merge git://git.infradead.org/users/willy/linux-nvme
Pull NVMe update from Matthew Wilcox:
 "Mostly bugfixes again for the NVMe driver.  I'd like to call out the
  exported tracepoint in the block layer; I believe Keith has cleared
  this with Jens.

  We've had a few reports from people who're really pounding on NVMe
  devices at scale, hence the timeout changes (and new module
  parameters), hotplug cpu deadlock, tracepoints, and minor performance
  tweaks"

[ Jens hadn't seen that tracepoint thing, but is ok with it - it will
  end up going away when mq conversion happens ]

* git://git.infradead.org/users/willy/linux-nvme: (22 commits)
  NVMe: Fix START_STOP_UNIT Scsi->NVMe translation.
  NVMe: Use Log Page constants in SCSI emulation
  NVMe: Define Log Page constants
  NVMe: Fix hot cpu notification dead lock
  NVMe: Rename io_timeout to nvme_io_timeout
  NVMe: Use last bytes of f/w rev SCSI Inquiry
  NVMe: Adhere to request queue block accounting enable/disable
  NVMe: Fix nvme get/put queue semantics
  NVMe: Delete NVME_GET_FEAT_TEMP_THRESH
  NVMe: Make admin timeout a module parameter
  NVMe: Make iod bio timeout a parameter
  NVMe: Prevent possible NULL pointer dereference
  NVMe: Fix the buffer size passed in GetLogPage(CDW10.NUMD)
  NVMe: Update data structures for NVMe 1.2
  NVMe: Enable BUILD_BUG_ON checks
  NVMe: Update namespace and controller identify structures to the 1.1a spec
  NVMe: Flush with data support
  NVMe: Configure support for block flush
  NVMe: Add tracepoints
  NVMe: Protect against badly formatted CQEs
  ...
2014-06-15 15:58:03 -10:00
Daniel Borkmann
b58537a1f5 net: sctp: fix permissions for rto_alpha and rto_beta knobs
Commit 3fd091e73b ("[SCTP]: Remove multiple levels of msecs
to jiffies conversions.") has silently changed permissions for
rto_alpha and rto_beta knobs from 0644 to 0444. The purpose of
this was to discourage users from tweaking rto_alpha and
rto_beta knobs in production environments since they are key
to correctly compute rtt/srtt.

RFC4960 under section 6.3.1. RTO Calculation says regarding
rto_alpha and rto_beta under rule C3 and C4:

  [...]
  C3)  When a new RTT measurement R' is made, set

       RTTVAR <- (1 - RTO.Beta) * RTTVAR + RTO.Beta * |SRTT - R'|

       and

       SRTT <- (1 - RTO.Alpha) * SRTT + RTO.Alpha * R'

       Note: The value of SRTT used in the update to RTTVAR
       is its value before updating SRTT itself using the
       second assignment. After the computation, update
       RTO <- SRTT + 4 * RTTVAR.

  C4)  When data is in flight and when allowed by rule C5
       below, a new RTT measurement MUST be made each round
       trip. Furthermore, new RTT measurements SHOULD be
       made no more than once per round trip for a given
       destination transport address. There are two reasons
       for this recommendation: First, it appears that
       measuring more frequently often does not in practice
       yield any significant benefit [ALLMAN99]; second,
       if measurements are made more often, then the values
       of RTO.Alpha and RTO.Beta in rule C3 above should be
       adjusted so that SRTT and RTTVAR still adjust to
       changes at roughly the same rate (in terms of how many
       round trips it takes them to reflect new values) as
       they would if making only one measurement per
       round-trip and using RTO.Alpha and RTO.Beta as given
       in rule C3. However, the exact nature of these
       adjustments remains a research issue.
  [...]

While it is discouraged to adjust rto_alpha and rto_beta
and not further specified how to adjust them, the RFC also
doesn't explicitly forbid it, but rather gives a RECOMMENDED
default value (rto_alpha=3, rto_beta=2). We have a couple
of users relying on the old permissions before they got
changed. That said, if someone really has the urge to adjust
them, we could allow it with a warning in the log.

Fixes: 3fd091e73b ("[SCTP]: Remove multiple levels of msecs to jiffies conversions.")
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-15 01:17:32 -07:00