OpenCloudOS-Kernel/include
David S. Miller 60cd6e63ec RxRPC rewrite
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Merge tag 'rxrpc-rewrite-20160922-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

David Howells says:

====================
rxrpc: Preparation for slow-start algorithm [ver #2]

Here are some patches that prepare for improvements in ACK generation and
for the implementation of the slow-start part of the protocol:

 (1) Stop storing the protocol header in the Tx socket buffers, but rather
     generate it on the fly.  This potentially saves a little space and
     makes it easier to alter the header just before transmission (the
     flags may get altered and the serial number has to be changed).

 (2) Mask off the Tx buffer annotations and add a flag to record which ones
     have already been resent.

 (3) Track RTT on a per-peer basis for use in future changes.  Tracepoints
     are added to log this.

 (4) Send PING ACKs in response to incoming calls to elicit a PING-RESPONSE
     ACK from which RTT data can be calculated.  The response also carries
     other useful information.

 (5) Expedite PING-RESPONSE ACK generation from sendmsg.  If we're actively
     using sendmsg, this allows us, under some circumstances, to avoid
     having to rely on the background work item to run to generate this
     ACK.

     This requires ktime_sub_ms() to be added.

 (6) Set the REQUEST-ACK flag on some DATA packets to elicit ACK-REQUESTED
     ACKs from which RTT data can be calculated.

 (7) Limit the use of pings and ACK requests for RTT determination.

Changes:

 (V2) Don't use the C division operator for 64-bit division.  One instance
      should use do_div() and the other should be using nsecs_to_jiffies().

      The last two patches got transposed, leading to an undefined symbol
      in one of them.

      Reported-by: kbuild test robot <lkp@intel.com>
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-22 08:14:59 -04:00
..
acpi treewide: replace obsolete _refok by __ref 2016-08-02 17:31:41 -04:00
asm-generic mm/usercopy: get rid of CONFIG_DEBUG_STRICT_USER_COPY_CHECKS 2016-08-30 10:10:21 -07:00
clocksource
crypto A number of improvements for the /dev/random driver; the most 2016-07-27 15:11:55 -07:00
drm Merge branch 'drm-next-4.8' of git://people.freedesktop.org/~agd5f/linux into drm-next 2016-08-08 16:45:33 +10:00
dt-bindings ARM: DT updates for v4.8 2016-08-01 18:37:45 -04:00
keys
kvm KVM/ARM Changes for v4.8 - Take 2 2016-08-04 13:59:56 +02:00
linux RxRPC rewrite 2016-09-22 08:14:59 -04:00
math-emu
media dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
memory
misc cxl: Add cxl_check_and_switch_mode() API to switch bi-modal cards 2016-07-14 20:28:11 +10:00
net sctp: rename WORD_TRUNC/ROUND macros 2016-09-22 03:13:26 -04:00
pcmcia
ras tracing, RAS: Cleanup on __get_str() usage 2016-07-15 15:51:16 -04:00
rdma IB/core: Use memdup_user() rather than duplicating its implementation 2016-08-23 12:40:13 -04:00
rxrpc rxrpc: Rewrite the data and ack handling code 2016-09-08 11:10:12 +01:00
scsi Merge remote-tracking branch 'mkp-scsi/4.8/scsi-fixes' into fixes 2016-08-19 07:41:12 -07:00
soc ARM: SoC driver updates for v4.8 2016-08-01 18:36:01 -04:00
sound Merge tag 'drm-for-v4.8' of git://people.freedesktop.org/~airlied/linux 2016-08-01 21:44:08 -04:00
target target: Fix ordered task CHECK_CONDITION early exception handling 2016-07-20 00:58:40 -07:00
trace rxrpc: Add per-peer RTT tracker 2016-09-22 01:26:25 +01:00
uapi net/sched: act_vlan: Introduce TCA_VLAN_ACT_MODIFY vlan action 2016-09-22 01:34:20 -04:00
video gpu: ipu-v3: ipu-dmfc: Use static DMFC FIFO allocation mechanism 2016-07-12 18:23:43 +02:00
xen xen: change the type of xen_vcpu_id to uint32_t 2016-08-24 18:17:27 +01:00
Kbuild