user/sven/linux.git/drivers/net, branch v3.2.64

can: at91_can: add missing prepare and unprepare of the clock

2014-11-05T20:27:45Z

commit e77980e50bc2850599d4d9c0192b67a9ffd6daac upstream. In order to make the driver work with the common clock framework, this patch converts the clk_enable()/clk_disable() to clk_prepare_enable()/clk_disable_unprepare(). While there, add the missing error handling. Signed-off-by: David Dueck Signed-off-by: Anthony Harivel Acked-by: Boris Brezillon Signed-off-by: Marc Kleine-Budde Signed-off-by: Ben Hutchings

can: flexcan: put TX mailbox into TX_INACTIVE mode after tx-complete

2014-11-05T20:27:45Z

commit de5944883ebbedbf5adc8497659772f5da7b7d72 upstream. After sending a RTR frame the TX mailbox becomes a RX_EMPTY mailbox. To avoid side effects when the RX-FIFO is full, this patch puts the TX mailbox into TX_INACTIVE mode in the transmission complete interrupt handler. This, of course, leaves a race window between the actual completion of the transmission and the handling of tx-complete interrupt. However this is the best we can do without busy polling the tx complete interrupt. Signed-off-by: Marc Kleine-Budde [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings

can: flexcan: implement workaround for errata ERR005829

2014-11-05T20:27:45Z

commit 25e924450fcb23c11c07c95ea8964dd9f174652e upstream. This patch implements the workaround mentioned in ERR005829: ERR005829: FlexCAN: FlexCAN does not transmit a message that is enabled to be transmitted in a specific moment during the arbitration process. Workaround: The workaround consists of two extra steps after setting up a message for transmission: Step 8: Reserve the first valid mailbox as an inactive mailbox (CODE=0b1000). If RX FIFO is disabled, this mailbox must be message buffer 0. Otherwise, the first valid mailbox can be found using the "RX FIFO filters" table in the FlexCAN chapter of the chip reference manual. Step 9: Write twice INACTIVE code (0b1000) into the first valid mailbox. Signed-off-by: David Jander Signed-off-by: Marc Kleine-Budde Signed-off-by: Ben Hutchings

can: flexcan: correctly initialize mailboxes

2014-11-05T20:27:45Z

commit fc05b884a31dbf259cc73cc856e634ec3acbebb6 upstream. Apparently mailboxes may contain random data at startup, causing some of them being prepared for message reception. This causes overruns being missed or even confusing the IRQ check for trasmitted messages, increasing the transmit counter instead of the error counter. This patch initializes all mailboxes after the FIFO as RX_INACTIVE. Signed-off-by: David Jander Signed-off-by: Marc Kleine-Budde Signed-off-by: Ben Hutchings

can: flexcan: mark TX mailbox as TX_INACTIVE

2014-11-05T20:27:45Z

commit c32fe4ad3e4861b2bfa1f44114c564935a123dda upstream. This patch fixes the initialization of the TX mailbox. It is now correctly initialized as TX_INACTIVE not RX_EMPTY. Signed-off-by: Marc Kleine-Budde Signed-off-by: Ben Hutchings

Revert "iwlwifi: dvm: don't enable CTS to self"

2014-11-05T20:27:39Z

commit f47f46d7b09cf1d09e4b44b6cc4dd7d68a08028c upstream. This reverts commit 43d826ca5979927131685cc2092c7ce862cb91cd. This commit caused packet loss. Signed-off-by: Emmanuel Grumbach [bwh: Backported to 3.2: - Adjust filename - Condition for RXON_FLG_SELF_CTS_EN in iwlagn_commit_rxon() was different] Signed-off-by: Ben Hutchings

rtlwifi: rtl8192cu: Add new ID

2014-11-05T20:27:39Z

commit c66517165610b911e4c6d268f28d8c640832dbd1 upstream. The Sitecom WLA-2102 adapter uses this driver. Reported-by: Nico Baggus Signed-off-by: Larry Finger Cc: Nico Baggus Signed-off-by: John W. Linville Signed-off-by: Ben Hutchings

macvlan: Initialize vlan_features to turn on offload support.

2014-09-13T22:41:49Z

[ Upstream commit 081e83a78db9b0ae1f5eabc2dedecc865f509b98 ] Macvlan devices do not initialize vlan_features. As a result, any vlan devices configured on top of macvlans perform very poorly. Initialize vlan_features based on the vlan features of the lower-level device. Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings

inetpeer: get rid of ip_id_count

2014-09-13T22:41:48Z

[ Upstream commit 73f156a6e8c1074ac6327e0abd1169e95eb66463 ] Ideally, we would need to generate IP ID using a per destination IP generator. linux kernels used inet_peer cache for this purpose, but this had a huge cost on servers disabling MTU discovery. 1) each inet_peer struct consumes 192 bytes 2) inetpeer cache uses a binary tree of inet_peer structs, with a nominal size of ~66000 elements under load. 3) lookups in this tree are hitting a lot of cache lines, as tree depth is about 20. 4) If server deals with many tcp flows, we have a high probability of not finding the inet_peer, allocating a fresh one, inserting it in the tree with same initial ip_id_count, (cf secure_ip_id()) 5) We garbage collect inet_peer aggressively. IP ID generation do not have to be 'perfect' Goal is trying to avoid duplicates in a short period of time, so that reassembly units have a chance to complete reassembly of fragments belonging to one message before receiving other fragments with a recycled ID. We simply use an array of generators, and a Jenkin hash using the dst IP as a key. ipv6_select_ident() is put back into net/ipv6/ip6_output.c where it belongs (it is only used from this file) secure_ip_id() and secure_ipv6_id() no longer are needed. Rename ip_select_ident_more() to ip_select_ident_segs() to avoid unnecessary decrement/increment of the number of segments. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings

carl9170: fix sending URBs with wrong type when using full-speed

2014-09-13T22:41:44Z

commit 671796dd96b6cd85b75fba9d3007bcf7e5f7c309 upstream. The driver assumes that endpoint 4 is always an interrupt endpoint. Unfortunately the type differs between high-speed and full-speed configurations while in the former case it is indeed an interrupt endpoint this is not true for the latter case - here it is a bulk endpoint. When sending URBs with the wrong type the kernel will generate a warning message including backtrace. In this specific case there will be a huge amount of warnings which can bring the system to freeze. To fix this we are now sending URBs to endpoint 4 using the type found in the endpoint descriptor. A side note: The carl9170 firmware currently specifies endpoint 4 as interrupt endpoint even in the full-speed configuration but this has no relevance because before this firmware is loaded the endpoint type is as described above and after the firmware is running the stick is not reenumerated and so the old descriptor is used. Signed-off-by: Ronald Wahl Signed-off-by: John W. Linville Signed-off-by: Ben Hutchings