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2013-10-12batman-adv: create common header for ICMP packetsAntonio Quartulli
the icmp and the icmp_rr packets share the same initial fields since they use the same code to be processed and forwarded. Extract the common fields and put them into a separate struct so that future ICMP packets can be easily added without bloating the packet definition. However, keep the seqno field outside of the newly created common header because future ICMP types may require a bigger sequence number space. This change breaks compatibility due to fields reordering in the ICMP headers. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-10-12batman-adv: use htons when possibleAntonio Quartulli
When comparing a network ordered value with a constant, it is better to convert the constant at compile time by means of htons() instead of converting the value at runtime using ntohs(). This refactoring may slightly improve the code performance. Moreover substitute __constant_htons() with htons() since the latter increase readability and it is smart enough to be as efficient as the former Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
2013-10-12batman-adv: Fragment and send skbs larger than mtuMartin Hundebøll
Non-broadcast packets larger than MTU are fragmented and sent with an encapsulating header. Up to 16 fragments are supported, which are sent in reverse order on the wire to allow minimal memory copying when creating fragments. Signed-off-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2013-10-12batman-adv: Receive fragmented packets and mergeMartin Hundebøll
Fragments arriving at their destination are buffered for later merge. Merged packets are passed to the main receive function as had they never been fragmented. Fragments are forwarded without merging if the MTU of the outgoing interface is smaller than the size of the merged packet. Signed-off-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2013-10-12batman-adv: Remove old fragmentation codeMartin Hundebøll
Remove the existing fragmentation code before adding the new version and delete unicast.{h,c}. batadv_unicast_send_skb() is moved to send.c and renamed to batadv_send_skb_unicast(). fragmentation entry in sysfs (bat_priv->fragmentation) is kept for use in the new fragmentation code. BATADV_UNICAST_FRAG packet type is renamed to BATADV_FRAG for use in the new fragmentation code. Signed-off-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2013-10-12batman-adv: use VLAN_ETH_HLEN instead of sizeof(struct vlan_eth_hdr)Antonio Quartulli
Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-10-12batman-adv: h_vlan_encapsulated_proto access refactoringAntonio Quartulli
In case of a VLAN tagged frame the ethhdr pointer is moved forward by 4 bytes so that the offset of h_proto in struct ethhdr matches the real h_vlan_encapsulated_proto address in the skb. While this trickery is correct it makes the code harder to understand and may lead to bugs in case of re-use of ethhdr for other purposes. This patch introduces a proto variable to make things cleaner and easier to understand. Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-10-12batman-adv: don't use call_rcu if not neededAntonio Quartulli
batadv_tt_global_entry_free_ref uses call_rcu to schedule a function which will only free the global entry itself. For this reason call_rcu is useless and kfree_rcu can be used to simplify the code. Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-10-12batman-adv: remove batadv_tt_global_add_orig declarationAntonio Quartulli
batadv_tt_global_add_orig is neither used nor implemented anymore, therefore it is possible to remove its declaration Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-10-12batman-adv: make tt_global_add static and return boolAntonio Quartulli
batadv_tt_global_add is not used anymore outside of the TT code thanks to the TVLV implementation. It can therefore be declared as static Last user has been removed by 3de4e64df0f1326db7cc0ef25f5af8522850252d ("batman-adv: tvlv - convert roaming adv packet to use tvlv unicast packets") Moreover make it return bool since its result can be either 0 or 1. Reported-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-10-12batman-adv: only add recordroute information to icmp request/replySimon Wunderlich
Adding host information for record route is only required for ICMP requests and replys, and should not be added to just any (future?) packet type. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2013-10-11tcp: tcp_transmit_skb() optimizationsEric Dumazet
1) We need to take a timestamp only for skb that should be cloned. Other skbs are not in write queue and no rtt estimation is done on them. 2) the unlikely() hint is wrong for receivers (they send pure ACK) Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: MF Nowlan <fitz@cs.yale.edu> Cc: Yuchung Cheng <ycheng@google.com> Cc: Neal Cardwell <ncardwell@google.com> Acked-By: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-11Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-mergeDavid S. Miller
Included changes: - update emails for A. Quartulli and M. Lindner in MAINTAINERS - switch to the next on-the-wire protocol version - introduce the T(ype) V(ersion) L(ength) V(alue) framework - adjust the existing components to make them use the new TVLV code - make the TT component use CRC32 instead of CRC16 - totally remove the VIS functionality (has been moved to userspace) - reorder packet types and flags - add static checks on packet format - remove __packed from batadv_ogm_packet
2013-10-10Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next Jeff Kirsher says: ==================== This series contains updates to i40e only. Alex provides the majority of the patches against i40e, where he does cleanup of the Tx and RX queues and to align the code with the known good Tx/Rx queue code in the ixgbe driver. Anjali provides an i40e patch to update link events to not print to the log until the device is administratively up. Catherine provides a patch to update the driver version. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-10inet: rename ir_loc_port to ir_numEric Dumazet
In commit 634fb979e8f ("inet: includes a sock_common in request_sock") I forgot that the two ports in sock_common do not have same byte order : skc_dport is __be16 (network order), but skc_num is __u16 (host order) So sparse complains because ir_loc_port (mapped into skc_num) is considered as __u16 while it should be __be16 Let rename ir_loc_port to ireq->ir_num (analogy with inet->inet_num), and perform appropriate htons/ntohs conversions. Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-10rt2x00: rt2800lib: fix VGC adjustment for RT3572 and RT3593Gabor Juhos
The Ralink DPO_RT5572_LinuxSTA_2.6.1.3_20121022 reference driver uses different RSSI threshold and VGC adjustment values for the RT3572 and RT3593 chipsets. Update the rt2800_link_tuner function to use the same values. Also change the comment in the function to make it more generic. References: RT35xx_ChipAGCAdjust function in chips/rt35xx.c RSSI_FOR_MID_LOW_SENSIBILITY constant in include/chip/rtmp_phy.h RT3593_R66_MID_LOW_SENS_GET macro in include/chip/rt3593.h RT3593_R66_NON_MID_LOW_SEMS_GET macro in include/chips/rt3593.h Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10rt2x00: rt2800lib: fix VGC adjustment for RT5592Gabor Juhos
In commit 3d81535ea5940446510a8a5cee1c6ad23c90c753 (rt2800: 5592: add chip specific vgc calculations) the rt2800_link_tuner function has been modified to adjust VGC level for the RT5592 chipset. On the RT5592 chipset, the VGC level must be adjusted only if rssi is greater than -65. However the current code adjusts the VGC value by 0x10 regardless of the actual chipset if the rssi value is between -80 and -65. Fix the broken behaviour by reordering the if-else statements. Cc: stable@vger.kernel.org Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10rt2x00: use generic EWMA functions for average RSSI calculationsGabor Juhos
Remove the local MOVING_AVERAGE implementation, and use the generic EWMA functions instead. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10rt2x00: rt2800lib: no need to toggle RF R30 bit 7 twiceKevin Lo
In rt2800_config_channel_rf3xxx(), there's no need to toggle RF R30 bit 7 twice. Signed-off-by: Kevin Lo <kevlo@kevlo.org> Acked-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10net: p54spi: remove deprecated IRQF_DISABLEDMichael Opdenacker
This patch proposes to remove the use of the IRQF_DISABLED flag It's a NOOP since 2.6.35 and it will be removed one day. Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10rt2x00: do not pause queue on flushStanislaw Gruszka
Pausing queue on flush make no sense since txdone procedure un-pause queue. Before flush procedure we have to assure queue is stopped, i.e. on receive path h/w RX is disabled, on transmit path queue is disabled in mac80211. That conditions are true except one function: rt2x00usb_watchdog_tx_dma(), so add stop/start queue there. Note stop/start queue can be racy if we do this from multiple paths, but currently we stop TX queues only on rt2x00lib_disable_radio(), which also stop/sync watchdog, hance we have no race condition. Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10rt2x00: rt2800lib: fix default VGC values for RT3572 for the 5GHz bandGabor Juhos
The rt2x00 driver uses 0x22 as a default VGC value in VGC adjustment for the RT3572 chipset. In the Ralink DPO_RT5572_LinuxSTA_2.6.1.3_20121022 driver, this value is only used for initialization. During VGC adjustment, the reference driver uses different values. Update the 'rt2800_get_default_vgc' function to synchronize the values with the reference driver. Also add the missing AGC initialization code into the 'rt2800_config_channel' function. References: RT35xx_SetAGCInitValue in chip/rt35xx.c RT35xx_ChipAGCAdjust in chip/rt35xx.c Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10rt2x00: rt2800lib: fix VGC programming for RT3572 and RT3593Gabor Juhos
According to the DPO_RT5572_LinuxSTA_2.6.1.3_20121022 reference driver, programming of the 'BBP 66' register on the RT3572 and RT3593 chipsets must be done via the 'rt2800_bbp_write_with_rx_chain' function. This ensures that value is correclty set for all RX chains. References: RT35xx_ChipAGCAdjust and RT35xx_SetAGCInitValue functions in chips/rt35xx.c Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10rt2x00: rt2800lib: fix default VGC values for RT3593Gabor Juhos
Update the rt2800_get_default_vgc function to use the same VGC values that the DPO_RT5572_LinuxSTA_2.6.1.3_20121022 reference driver uses. References: RT35xx_ChipAGCAdjust in chips/rt35xx.c RT3593_R66_MID_LOW_SENS_GET macro in include/chip/rt3593.h RT3593_R66_NON_MID_LOW_SEMS_GET macro in include/chips/rt3593.h Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10rt2x00: rt2800lib: remove TXPOWER_DELTA entry from extended EEPROM mapGabor Juhos
The TXPOWER_DELTA field of the regular EEPROM stores the TX power compensation value for HT40. The extended EEPROM has no such field, it stores separate TX power values for HT20 and for HT40. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Paul Menzel <paulepanter@users.sourceforge.net> Acked-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10rt2x00: rt2800lib: remove TXMIXER_GAIN entries from the extended EEPROM mapGabor Juhos
The comments are indicating that the TXMIXER_GAIN_BG and TXMIXED_GAIN_A entries are overlapping with the RSSI_BG2 and RSSI_A2 entries in the extended EEPROM map. This is not correct, because the upper byte of the RSSI_BG2 and RSSI_A2 entries are reserved. There are no TX mixer gain values are stored at all in the extended EEPROM. Remove the initialization of these entries from the extended EEPROM map to reflect this. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Paul Menzel <paulepanter@users.sourceforge.net> Acked-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10brcmsmac: add support for a BCM4313 with PCI id 0x4313Hauke Mehrtens
There are some BCM4313 out there with a PCI id of 0x4313. These devices are missing a sprom and are only used on routers or other embedded devices. We found one connected to a BCM63XX SoC. This devices was found by someone in this ticket: https://dev.openwrt.org/ticket/13551 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10bcma: add PCI id 0x4313Hauke Mehrtens
This PCI id is used by some BCM4313 cards without a sprom. I have seen such a card on a router connected to some BCM63XX SoC via PCIe. There are cards out there with the same PCI id and a BCM4311, which is a pre ieee80211n chip only supporting ieee80211a, these are still not supported by b43 and not detected by ssb. This devices was found by someone in this ticket: https://dev.openwrt.org/ticket/13551 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10bcma: reject PCI cards in bcma.Hauke Mehrtens
bcma currently only supports PCIe cards and no PCI cards, reject them if we find them. I have never heard of any PCI card using the AI bus (bcma), all of them are using ssb instead. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10net: wireless: wl1251: update firmware pathFelipe Balbi
TI firmwares are located under ti-connectivity directory. Update path to make sure driver can find and load firmware blob. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10rt2x00_pci: Fix interrupt handler name (visible at /proc/interrupts)Kirill Tkhai
Currently driver name is wrong. PCI device address is visible at /proc/interrupts instead of the name: 43: 124 0 0 0 PCI-MSI-edge rtsx_pci 44: 384 0 0 0 PCI-MSI-edge snd_hda_intel 45: 25096 0 0 0 PCI-MSI-edge 0000:01:00.0 ^^^^^^^^^^^^ So, pass the right name. rt2x00_ops->name contains KBUILD_MODNAME and good for that, so pass it. Handler names will be "rt2500pci", "rt2500pci" etc. Signed-off-by: Kirill Tkhai <tkhai@yandex.ru> CC: Ivo van Doorn <IvDoorn@gmail.com> CC: Gertjan van Wingerde <gwingerde@gmail.com> CC: Helmut Schaa <helmut.schaa@googlemail.com> CC: linux-wireless@vger.kernel.org Acked-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10wcn36xx: mac80211 driver for Qualcomm WCN3660/WCN3680 hardwareEugene Krasnikov
This is a mac80211 driver for Qualcomm WCN3660/WCN3680 devices. So far WCN3660/WCN3680 is available only on MSM platform. Firmware can be found here: https://www.codeaurora.org/cgit/external/hisense/platform/vendor/qcom-opensource/wlan/prima/tree/firmware_bin?h=8130_CS Wiki page is available here: http://wireless.kernel.org/en/users/Drivers/wcn36xx A lot people made a contribution to this driver. Here is the list in alphabetical order: Eugene Krasnikov <k.eugene.e@gmail.com> Kalle Valo <kvalo@qca.qualcomm.com> Olof Johansson <dev@skyshaper.net> Pontus Fuchs <pontus.fuchs@gmail.com> Yanbo Li <yanbol@qti.qualcomm.com> Signed-off-by: Eugene Krasnikov <k.eugene.e@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10mwifiex: Change variable type to boolPeter Senna Tschudin
The variables cancel_scan_cmd, enable_data, hs_activate and valid are only assigned the values true and false. Change its type to bool. The simplified semantic patch that find this problem is as follows (http://coccinelle.lip6.fr/): @exists@ type T; identifier b; @@ - T + bool b = ...; ... when any b = \(true\|false\) Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Acked-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-10Merge branch 'for-john' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
2013-10-09i40e: Bump versionCatherine Sullivan
Update the version number of the driver. Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-10-09i40e: Add support for 64 bit netstatsAlexander Duyck
This change brings support for 64 bit netstats to the driver. Previously the stats were 64 bit but highly racy due to the fact that 64 bit transactions are not atomic on 32 bit systems. This change makes is so that the 64 bit byte and packet stats are reliable on all architectures. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-10-09i40e: Move rings from pointer to array to array of pointersAlexander Duyck
Allocate the queue pairs individually instead of as a group. This allows for much easier queue management as it is possible to dynamically resize the queues without having to free and allocate the entire block. Ease statistic collection by treating Tx/Rx queue pairs as a single unit. Each pair is allocated together and starts with a Tx queue and ends with an Rx queue. By ordering them this way it is possible to know the Rx offset based on a pointer to the Tx queue. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-10-09i40e: Replace ring container array with linked listAlexander Duyck
This replaces the ring container array with a linked list. The idea is to make the logic much easier to deal with since this will allow us to call a simple helper function from the q_vectors to go through the entire list. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-10-09i40e: Move q_vectors from pointer to array to array of pointersAlexander Duyck
Allocate the q_vectors individually. The advantage to this is that it allows for easier freeing and allocation. In addition it makes it so that we could do node specific allocations at some point in the future. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-10-09i40e: Split bytes and packets from Rx/Tx statsAlexander Duyck
This makes it so that the Tx and Rx byte and packet counts are separated from the rest of the statistics. This allows for better isolation of these stats when we move them into the 64 bit statistics. Simplify things by re-ordering how the stats display in ethtool. Instead of displaying all of the Tx queues as a block, followed by all the Rx queues, the new order is Tx[0], Rx[0], Tx[1], Rx[1], ..., Tx[n], Rx[n]. This reduces the loops and cleans up the display for testing purposes since it is very easy to verify if flow director is doing the right thing as the Tx and Rx queue pair are shown in pairs. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-10-09i40e: Add support for Tx byte queue limitsAlexander Duyck
Implement BQL (byte queue limit) support in i40e. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-10-09i40e: Drop dead code and flags from Tx hotpathAlexander Duyck
Drop Tx flag and TXSW which is tested but never set. As a result of this change we can drop a complicated check that always resulted in the final result of i40e_tx_csum being equal to the CHECKSUM_PARTIAL value. As such we can replace the entire function call with just a check for skb->summed == CHECKSUM_PARTIAL. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-10-09i40e: clean up Tx fast pathAlexander Duyck
Sync the fast path for i40e_tx_map and i40e_clean_tx_irq so that they are similar to igb and ixgbe. - Only update the Tx descriptor ring in tx_map - Make skb mapping always on the first buffer in the chain - Drop the use of MAPPED_AS_PAGE Tx flag - Only store flags on the first buffer_info structure Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-10-09i40e: Do not directly increment Tx next_to_useAlexander Duyck
Avoid directly incrementing next_to_use for multiple reasons. The main reason being that if we directly increment it then it can attain a state where it is equal to the ring count. Technically this is a state it should not be able to reach but the way this is written it now can. This patch pulls the value off into a register and then increments it and writes back either the value or 0 depending on if the value is equal to the ring count. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-10-09i40e: Cleanup Tx buffer info layoutAlexander Duyck
- drop the mapped_as_page u8 from the Tx buffer info as it was unused - use the DMA unmap accessors for Tx DMA - replace checks of DMA with checks of the unmap length to verify if an unmap is needed - update the Tx buffer layout to make it consistent with igb, ixgbe Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-10-10tcp: use ACCESS_ONCE() in tcp_update_pacing_rate()Eric Dumazet
sk_pacing_rate is read by sch_fq packet scheduler at any time, with no synchronization, so make sure we update it in a sensible way. ACCESS_ONCE() is how we instruct compiler to not do stupid things, like using the memory location as a temporary variable. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-10inet: includes a sock_common in request_sockEric Dumazet
TCP listener refactoring, part 5 : We want to be able to insert request sockets (SYN_RECV) into main ehash table instead of the per listener hash table to allow RCU lookups and remove listener lock contention. This patch includes the needed struct sock_common in front of struct request_sock This means there is no more inet6_request_sock IPv6 specific structure. Following inet_request_sock fields were renamed as they became macros to reference fields from struct sock_common. Prefix ir_ was chosen to avoid name collisions. loc_port -> ir_loc_port loc_addr -> ir_loc_addr rmt_addr -> ir_rmt_addr rmt_port -> ir_rmt_port iif -> ir_iif Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-10net: gro: allow to build full sized skbEric Dumazet
skb_gro_receive() is currently limited to 16 or 17 MSS per GRO skb, typically 24616 bytes, because it fills up to MAX_SKB_FRAGS frags. It's relatively easy to extend the skb using frag_list to allow more frags to be appended into the last sk_buff. This still builds very efficient skbs, and allows reaching 45 MSS per skb. (45 MSS GRO packet uses one skb plus a frag_list containing 2 additional sk_buff) High speed TCP flows benefit from this extension by lowering TCP stack cpu usage (less packets stored in receive queue, less ACK packets processed) Forwarding setups could be hurt, as such skbs will need to be linearized, although its not a new problem, as GRO could already provide skbs with a frag_list. We could make the 65536 bytes threshold a tunable to mitigate this. (First time we need to linearize skb in skb_needs_linearize(), we could lower the tunable to ~16*1460 so that following skb_gro_receive() calls build smaller skbs) Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-10fib_trie: only calc for the un-first nodebaker.zhang
This is a enhancement. for the first node in fib_trie, newpos is 0, bit is 1. Only for the leaf or node with unmatched key need calc pos. Signed-off-by: baker.zhang <baker.kernel@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-10veth: allow to setup multicast address for veth deviceGao feng
We can only setup multicast address for network device when net_device_ops->ndo_set_rx_mode is not null. Some configurations need to add multicast address for net device, such as netfilter cluster match module. Add a fake ndo_set_rx_mode function to allow this operation. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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