android_external_android-clat, branch replicant-6.0-0003 Unnamed repository; edit this file 'description' to name the repository. Process packets in bursts. 2016-06-09T04:15:23+00:00 Lorenzo Colitti lorenzo@google.com 2015-09-25T16:27:34+00:00 bee83f8d7edb48a1d8b8f2333a1b259854c44b95 Add a "packet_burst" config option that will cause clatd to read (and write) in bursts of up to that number of packets, instead of always only reading one packet at a time. This reduces poll overhead and improves performance. The variable is initially set to 10. Bug: 24113287 Change-Id: I7feba4127538c5a89f92e0ebea1fb75971d6b901 
Add a "packet_burst" config option that will cause clatd to read
(and write) in bursts of up to that number of packets, instead of
always only reading one packet at a time. This reduces poll
overhead and improves performance.

The variable is initially set to 10.

Bug: 24113287
Change-Id: I7feba4127538c5a89f92e0ebea1fb75971d6b901
Run the receive path in its own thread. 2016-06-09T04:12:27+00:00 Lorenzo Colitti lorenzo@google.com 2015-09-25T17:19:14+00:00 4f99df509e1e6626967aa8bb394045932e75576b Bug: 24113287 Change-Id: I3e77f5d5e9fcc47819f2a9fe60cff4aa7f97a8bd 
Bug: 24113287
Change-Id: I3e77f5d5e9fcc47819f2a9fe60cff4aa7f97a8bd
clatd: Fix packet corruption seen with GRO packets 2016-05-23T08:43:02+00:00 Subash Abhinov Kasiviswanathan subashab@codeaurora.org 2016-01-15T04:17:46+00:00 8ac9b35e42dcd874cd313c4bcf9d3244f80ba725 MTU serves a dual purpose for CLAT. The segment size of the packet ring is based on the MAXMTU apart from the interface MTU itself. GRO coalesce happens on the receive path which is not affected by the MTU (transmit). In other words, increasing the MAXMTU does not affect if a GRO coalesced packet is delivered to CLAT. It only affects the amount of data being read from the TPacket ring. Introduce a new parameter MAXMRU which handles the increased MRU to account for GRO packets. Increase the ring size to compensate for the larger segments to maintain the same throughput as earlier. Change-Id: I30057970973b99181505e698f64e7fa5aa0a27d9 
MTU serves a dual purpose for CLAT. The segment size of the packet
ring is based on the MAXMTU apart from the interface MTU itself.

GRO coalesce happens on the receive path which is not affected by
the MTU (transmit). In other words, increasing the MAXMTU does not
affect if a GRO coalesced packet is delivered to CLAT.
It only affects the amount of data being read from the TPacket ring.

Introduce a new parameter MAXMRU which handles the increased MRU
to account for GRO packets. Increase the ring size to compensate
for the larger segments to maintain the same throughput as earlier.

Change-Id: I30057970973b99181505e698f64e7fa5aa0a27d9
Merge branch 'LA.BF64.1.2.2_rb4.9' of git://codeaurora.org/platform/external/android-clat into cm-13.0 2015-12-08T06:52:58+00:00 Steve Kondik steve@cyngn.com 2015-12-08T06:52:58+00:00 54455ee38fc75efa23fc7b8e57ca1c954380ecbe Change-Id: I8ff75c228032b83459bfc1090488fb670c01734e 
Change-Id: I8ff75c228032b83459bfc1090488fb670c01734e
clatd: Relay checksum information from packet socket to TUN interface 2015-11-15T20:21:45+00:00 Subash Abhinov Kasiviswanathan subashab@codeaurora.org 2015-10-27T00:45:04+00:00 32961d08e3abe5b4e81178bb8c37dd4df231306d With this change, we can notify network stack to disable checksum validation for GRO packets as well as other packets which have checksum validation completed earlier in a driver. GRO packets have the ip_summed field set to CHECKSUM_PARTIAL while checksum offloaded packets have the ip_summed field as CHECKSUM_UNNECESSARY. Kernel copies this ip_summed field to the status field in the tpacket filter. The information from the status field is then passed as part of the TUN header to the TUN interface. Any other packet will have the complete checksum validation done in the network stack. Note that this only applies to packets which are captured in packet sockets and passed onto the TUN interface. Change-Id: I536c0356cbbf30fed7ecda5fdd0d38fa0dfd7bf3 
With this change, we can notify network stack to disable checksum
validation for GRO packets as well as other packets which have
checksum validation completed earlier in a driver.

GRO packets have the ip_summed field set to CHECKSUM_PARTIAL while
checksum offloaded packets have the ip_summed field as
CHECKSUM_UNNECESSARY. Kernel copies this ip_summed field to the
status field in the tpacket filter. The information from the status
field is then passed as part of the TUN header to the TUN interface.

Any other packet will have the complete checksum validation done
in the network stack. Note that this only applies to packets which
are captured in packet sockets and passed onto the TUN interface.

Change-Id: I536c0356cbbf30fed7ecda5fdd0d38fa0dfd7bf3
Revert "clatd: Use the TUN_NOCHECKSUM flag for the tun device" 2015-11-15T19:59:53+00:00 Subash Abhinov Kasiviswanathan subashab@codeaurora.org 2015-10-28T00:13:17+00:00 b38ac868d20bb9c1cae087ab18691d242aad0c5c This reverts commit 7efed4e30259da5348c4a7c2c77a0d0d4b13834d. This change may bypass checksum validation for all packets even if they have not been validated earlier. Hardware supports checksum offload for IPv4 / IPv6 UDP and TCP packets only. ICMPv4 / ICMPv6 / fragmented packet checksum offload is not supported and as a result the checksum will not be validated even once before these packet are delivered to the application. Change-Id: I28152b63bb432c3dc37fe7a713c3b225a662f678 
This reverts commit 7efed4e30259da5348c4a7c2c77a0d0d4b13834d.

This change may bypass checksum validation for all packets even if
they have not been validated earlier.

Hardware supports checksum offload for IPv4 / IPv6 UDP and TCP
packets only. ICMPv4 / ICMPv6 / fragmented packet checksum offload
is not supported and as a result the checksum will not be validated
even once before these packet are delivered to the application.

Change-Id: I28152b63bb432c3dc37fe7a713c3b225a662f678
clatd: Fix compilation warnings 2015-11-04T18:58:29+00:00 Steve Kondik steve@cyngn.com 2015-11-04T18:58:29+00:00 11ffa2451829c9bcb86f00c1cfff9f3be4b7064c Change-Id: Icd63e74aa14d1fe4d3220134bd17fc222492ea2d 
Change-Id: Icd63e74aa14d1fe4d3220134bd17fc222492ea2d
clatd: Use the TUN_NOCHECKSUM flag for the tun device 2015-10-12T16:56:09+00:00 Subash Abhinov Kasiviswanathan subashab@codeaurora.org 2015-10-11T01:41:32+00:00 7efed4e30259da5348c4a7c2c77a0d0d4b13834d This is needed to handle cases when the packet socket receives a GRO coalesced packet which will not have a valid TCP checksum. TUN_NOCHECKSUM is used only when the checksum has already been verified prior to this and GRO is being used. Change-Id: I1409967523152bb7620b4881526e78e8c222cc72 
This is needed to handle cases when the packet socket receives
a GRO coalesced packet which will not have a valid TCP checksum.
TUN_NOCHECKSUM is used only when the checksum has already been
verified prior to this and GRO is being used.

Change-Id: I1409967523152bb7620b4881526e78e8c222cc72
am ca1976f4: am 9fbed20c: am 624e743c: am 8dccd379: am 05ff508a: Remove unused variables. 2015-03-26T21:35:47+00:00 Chih-Hung Hsieh chh@google.com 2015-03-26T21:35:47+00:00 35b34f09ab343ae8a75fcb9ff3cea180cf58992a * commit 'ca1976f4a486d48d5e96ac0bfa16560820bea777': 
* commit 'ca1976f4a486d48d5e96ac0bfa16560820bea777':
am ea2105a3: am ce88200a: am 23d83ff2: am cca70d8b: am dce3ddf5: Call read on any event, not just on POLLIN. 2015-03-26T21:35:47+00:00 Lorenzo Colitti lorenzo@google.com 2015-03-26T21:35:47+00:00 da702e8a958aaaff690a5a37ba2ca9c93bf8a86d * commit 'ea2105a379cc829e3265ce5c37710c47b80dbd48': 
* commit 'ea2105a379cc829e3265ce5c37710c47b80dbd48':