- 28 Jul, 2014 6 commits
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Florian Westphal authored
no longer used. Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Florian Westphal authored
The 'nqueues' counter is protected by the lru list lock, once thats removed this needs to be converted to atomic counter. Given this isn't used for anything except for reporting it to userspace via /proc, just remove it. We still report the memory currently used by fragment reassembly queues. Signed-off-by:
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Florian Westphal authored
When the high_thresh limit is reached we try to toss the 'oldest' incomplete fragment queues until memory limits are below the low_thresh value. This happens in softirq/packet processing context. This has two drawbacks: 1) processors might evict a queue that was about to be completed by another cpu, because they will compete wrt. resource usage and resource reclaim. 2) LRU list maintenance is expensive. But when constantly overloaded, even the 'least recently used' element is recent, so removing 'lru' queue first is not 'fairer' than removing any other fragment queue. This moves eviction out of the fast path: When the low threshold is reached, a work queue is scheduled which then iterates over the table and removes the queues that exceed the memory limits of the namespace. It sets a new flag called INET_FRAG_EVICTED on the evicted queues so the proper counters will get incremented when the queue is forcefully expired. When the high threshold is reached, no more fragment queues are created until we're below the limit again. The LRU list is now unused and will be removed in a followup patch. Joint work with Nikolay Aleksandrov. Suggested-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
Nikolay Aleksandrov <nikolay@redhat.com> Signed-off-by:
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Florian Westphal authored
First step to move eviction handling into a work queue. We lose two spots that accounted evicted fragments in MIB counters. Accounting will be restored since the upcoming work-queue evictor invokes the frag queue timer callbacks instead. Signed-off-by:
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Florian Westphal authored
hide actual hash size from individual users: The _find function will now fold the given hash value into the required range. Signed-off-by:
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Florian Westphal authored
Signed-off-by:
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- 25 Jul, 2014 21 commits
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Li RongQing authored
After 11878b40[net-timestamp: SOCK_RAW and PING timestamping], this comment becomes obsolete since the codes check not only UDP socket, but also RAW sock; and the codes are clear, not need the comments Signed-off-by:
Li RongQing <roy.qing.li@gmail.com> Signed-off-by:
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David S. Miller authored
Cyrille Pitchen says: ==================== net/macb: add HW features to macb driver this series of patches adds new hardware features to macb driver. These features can be enabled/disabled at runtime using ethtool. Depending on hardware and design configuration, some are enabled by default whereas other are disabled. For instance, checksum offload features are enabled by default for gem designed for packet buffer mode but disabled for fifo mode design or for old macb. Besides, the scatter-gather feature is enabled and tested on macb but disabled on sama5d3x gem. When testing this feature on sama5d3x gem, TX lockups occured frequently. Also, the RX checksum offload feature is enabled at GEM level only when both IFF_PROMISC bit is clear in dev->flags and NETIF_F_RXCSUM bit is set in dev->features. ==================== Signed-off-by: -
Cyrille Pitchen authored
Signed-off-by:
Cyrille Pitchen <cyrille.pitchen@atmel.com> Signed-off-by:
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Cyrille Pitchen authored
this new compatibility string prevents macb/gem driver from using the scatter-gather and gso features on sama5d3x boards. Signed-off-by:
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Cyrille Pitchen authored
When RX checksum offload is enabled at GEM level (bit 24 set in the Network Control Register), frames with invalid IP, TCP or UDP checksums are discarted even if promiscuous mode is enabled (bit 4 set in the Network Control Register). This was verified with a simple userspace program, which corrupts UDP checksum using libnetfilter_queue. Then both IFF_PROMISC bit must be clear in dev->flags and NETIF_F_RXCSUM bit must be set in dev->features to enable RX checksum offload at GEM level. This way tcpdump is still able to capture corrupted frames. Also skb->ip_summed is set to CHECKSUM_UNNECESSARY only when both TCP/IP or UDP/IP checksums were verified by the GEM. Indeed the GEM may verify only IP checksum but not the one for ICMP (or other protocol than TCP or UDP). Signed-off-by:
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Cyrille Pitchen authored
Signed-off-by:
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Cyrille Pitchen authored
The scatter-gather feature will allow to enable the Generic Segmentation Offload. Generic Segmentation Offload can be enabled/disabled using ethtool -K DEVNAME gso on|off. e.g: ethtool -K eth0 gso off When enabled, the driver may be provided with socket buffers splitted into many fragments. These fragments need to be queued into the TX ring in reverse order, starting from to the last one down to the first one, to avoid a race condition with the MAC. Especially the 'TX_USED' bit in word 1 of the transmit buffer descriptor of the first fragment should be cleared at the very final step of the queueing algorithm. This will tell the hardware that fragments are ready to be sent. Also since the MAC only update the status word of the first buffer descriptor of the ethernet frame, the queueing algorithm can no longer expect a 'TX_USED' bit to be set by the MAC into the buffer descriptor following the one for last fragment of the skb. This is why the driver sets the 'TX_USED' bit before queueing any fragment, so the end of queue position is well defined for the MAC. Signed-off-by:
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Nicolas Ferre authored
This addition will also allow to configure DMA burst length. Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by:
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Mugunthan V N authored
removing unused function as part of driver cleanup.` Signed-off-by:
Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by:
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Fengguang Wu authored
Fixes sparse warning intrduced by commit 0fef9d03 ("net/mlx4_en: Disable blueflame using ethtool private flags") Signed-off-by:
Fengguang Wu <fengguang.wu@intel.com> Signed-off-by:
Amir Vadai <amirv@mellanox.com> Signed-off-by:
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Sonic Zhang authored
Ethernet RX DMA buffers are polled in NAPI work queue other than received directly in DMA RX interrupt handler. Signed-off-by:
Sonic Zhang <sonic.zhang@analog.com> Signed-off-by:
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WANG Cong authored
"net" is normally for struct net*, pointer to struct net_device should be named to either "dev" or "ndev" etc. Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
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Himangi Saraogi authored
This patch changes instances of magic numbers like 4 and 8 to equivalent constants. The Coccinelle semantic patch used for making the change is as follows: // <smpl> @r@ type T; T E; identifier fld; identifier c; @@ E->fld & c @s@ constant C; identifier r.c; @@ #define c C @@ r.T E; identifier r.fld; identifier r.c; constant s.C; @@ E->fld & - C + c // </smpl> Signed-off-by:
Himangi Saraogi <himangi774@gmail.com> Acked-by:
Julia Lawall <julia.lawall@lip6.fr> Signed-off-by:
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Hariprasad Shenai authored
Fix incorrect check introduced in commit fc5ab020 ("cxgb4: Replaced the backdoor mechanism to access the HW memory with PCIe Window method"). We where checking for write operation and doing a read, changed it accordingly. Signed-off-by:
Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by:
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Alexei Starovoitov authored
eBPF is used by socket filtering, seccomp and soon by tracing and exposed to userspace, therefore 'sock_filter_int' name is not accurate. Rename it to 'bpf_insn' Signed-off-by:
Alexei Starovoitov <ast@plumgrid.com> Signed-off-by:
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Fabio Estevam authored
Get rid of the CONFIG_PM_SLEEP ifdef by annotating the suspend/resume functions with '__maybe_unused' in order to keep the code simpler and shorter. While at it, declare the suspend/resume functions in a single line. Signed-off-by:
Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by:
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Himangi Saraogi authored
In this file, function names are otherwise used as pointers without &. A simplified version of the Coccinelle semantic patch that makes this change is as follows: // <smpl> @r@ identifier f; @@ f(...) { ... } @@ identifier r.f; @@ - &f + f // </smpl> Signed-off-by: -
Himangi Saraogi authored
In this file, function names are otherwise used as pointers without &. A simplified version of the Coccinelle semantic patch that makes this change is as follows: // <smpl> @r@ identifier f; @@ f(...) { ... } @@ identifier r.f; @@ - &f + f // </smpl> Signed-off-by: -
Himangi Saraogi authored
In this file, function names are otherwise used as pointers without &. A simplified version of the Coccinelle semantic patch that makes this change is as follows: // <smpl> @r@ identifier f; @@ f(...) { ... } @@ identifier r.f; @@ - &f + f // </smpl> Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/pshelar/openvswitchDavid S. Miller authored
Pravin B Shelar says: ==================== Open vSwitch Following patches adds three features to OVS 1. Add fairness to upcall processing. 2. Hash action. 3. Enable Tunnel GSO features. Rest of patches are bug fixes related to patches from same series. v2 series changes first patch according to comment from Dave Miller. v3 series changes first patch according to comment from Nikolay Aleksandrov. v4 series update recirc patch commit msg. v5 series resolve conflict with net-next, updated recic action patch. v6 series sends all patches. v7 series drop recirc patches. v8 series checkpatch fix v9 series drop HASH action patch. update sample action commit msg. ==================== Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-nextDavid S. Miller authored
Jeff Kirsher says: ==================== Intel Wired LAN Driver Updates 2014-07-24 This series contains updates to igb, ixgbe, i40e and i40evf. Mark fixes a possible attempt to dereference a NULL pointer in ixgbe_probe(). Also changes some uses of strncpy to strlcpy when clearing is not needed to prevent information leakage. Jacob fixes a bug in the misuse of the list_for_each macro to loop over every entry in the bus_list. Instead of attempting to loop over the list from a random entry point, go up to the bus and use the real list_head entry point. This prevents the possible read or write of unallocated or incorrectly addressed memory. Then provides a patch to prevent the display of the minimum link qualification check if we might be in a virtual machine. This check is incorrect and misleading in this case, since we actually do not really know what the available bandwidth is. To do so, we simply check whether each function on the bus matches our device id. Carolyn adds a check and prints the error cause register value when the hardware detects a malformed packet to assist the user. Toralf Förster fixes a format mismatch in i40e which was found using cppcheck. Shannon adds nvmupdate support by implementing a state machine intended to support the userland tool for updating the device eeprom. Jesse fixes the extension header checksum logic for IPv6 in i40e and i40evf. Mitch reduces a delay in the i40evf driver where we do not need to delay an entire millisecond to get into our critical section. Kamil fixes an issue where access to the NVM was being blocked until a driver reset where a check for NVM related admin queue commands would not recognize that such a command was received and would not clear nvm_busy flag. Catherine fixes a couple of firmware API version errors. ==================== Signed-off-by:
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- 24 Jul, 2014 13 commits
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Andy Zhou authored
Fix a bug where skb_clone() NULL check is missing in sample action implementation. Signed-off-by:
Andy Zhou <azhou@nicira.com> Signed-off-by:
Pravin B Shelar <pshelar@nicira.com>
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Simon Horman authored
The sample action is rather generic, allowing arbitrary actions to be executed based on a probability. However its use, within the Open vSwitch code-base is limited: only a single user-space action is ever nested. A consequence of the current implementation of sample actions is that depending on weather the sample action executed (due to its probability) any side-effects of nested actions may or may not be present before executing subsequent actions. This has the potential to complicate verification of valid actions by the (kernel) datapath. And indeed adding support for push and pop MPLS actions inside sample actions is one case where such case. In order to allow all supported actions to be continue to be nested inside sample actions without the potential need for complex verification code this patch changes the implementation of the sample action in the kernel datapath so that sample actions are more like a function call and any side effects of nested actions are not present when executing subsequent actions. With the above in mind the motivation for this change is twofold: * To contain side-effects the sample action in the hope of making it easier to deal with in the future and; * To avoid some rather complex verification code introduced in the MPLS datapath patch. Signed-off-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
Jesse Gross <jesse@nicira.com> Signed-off-by:
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Andy Zhou authored
In queue_userspace_packet(), the ovs_nla_put_flow return value is not checked. This is fine as long as key_attr_size() returns the correct value. In case it does not, the current code may corrupt buffer memory. Add a run time assertion catch this case to avoid silent failure. Reported-by:
Ben Pfaff <blp@nicira.com> Signed-off-by:
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Shannon Nelson authored
Sometimes the AQTX answer comes back with no data, but we still want to print the descriptor that got written back. Change-ID: I5f734d99b4c95510987413893f0a34626571d474 Signed-off-by:
Shannon Nelson <shannon.nelson@intel.com> Tested-by:
Jim Young <jamesx.m.young@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Catherine Sullivan authored
Give link a little more time to come back up after setting flow control before resetting. In the new NVMs it is taking longer for link to come back. This causes the driver to attempt to reset the link, which then errors because the firmware was already in the middle of a reset. Also, initialize err to 0. Change-ID: I1cc987a944e389d8909c262da5796f50722b4d6b Signed-off-by:
Catherine Sullivan <catherine.sullivan@intel.com> Tested-by:
Jim Young <jmyoungx@intel.com> Signed-off-by:
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Catherine Sullivan authored
Reword the error messages. Also add a major version check because We only want to warn on nvm_minor > expected_minor if nvm_major == expected_major. Lastly, change an if to an else if because the two statements will never evaluate to true at the same time. Change-ID: I6ddf9986f26b35f6879cbeac4fcef04a8497a383 Signed-off-by:
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Kamil Krawczyk authored
Copy desc and buffer data even for ARQ events which return error status. Previously, a check for NVM related AQ commands which is done later in this function would not recognize that such a command was received and would not clear nvm_busy flag. This would block access to NVM until a driver reset. This will fix that. Change-ID: If69ad74e165b56081c0686b97402511d2e2880c0 Signed-off-by:
Kamil Krawczyk <kamil.krawczyk@intel.com> Tested-by:
Sibai Li <sibai.li@intel.com> Signed-off-by:
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Mitch Williams authored
We really don't need to delay an entire millisecond just to get into our critical section. A microsecond will be sufficient, thank you. Change-ID: I2d02ece6610007d98cabcb3f42df9a774bb54e59 Signed-off-by:
Mitch Williams <mitch.a.williams@intel.com> Tested-by:
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Jesse Brandeburg authored
The hardware design requires that the driver avoid indicating checksum offload success on some ipv6 frames with extension headers. The code needs to just check for the IPV6EXADD bit and if it is set punt the checksum to the stack. I don't know why the code was checking TCP on inner protocol, as that code doesn't make any sense to me but seems wrong, so remove it. Change-ID: I10d3aacdbb1819fb60b4b0eb80e6cc67ef2c9599 Signed-off-by:
Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-By:
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Shannon Nelson authored
This implements a state machine intended to support the userland tool for updating the device eeprom. The state machine implements one-shot reads, writes, multi-step write sessions, and checksum requests. If we're in the middle of a multi-step write session, no one should fire off other writes, however, one shot reads are valid. The userland tool is expected to keep track of its session status, arrange the placement and ordering of the writes, and deal with the checksum requirement. This patch also adds nvmupdate support to ethtool callbacks. The get_eeprom() and set_eeprom() services in ethtool are used here to facilitate the userland NVMUpdate tool. The 'magic' value in the get and set commands is used to pass additional control information for managing the read and write steps. The read operation works both as normally expected in the standard ethtool method, as well as with the extra NVM controls. The write operation works only for the expanded NVM functions - the normal ethtool method is not allowed because of the NVM semaphore management needed for multipart writes, as well as the checksum requirement. Change-ID: I1d84a170153a9f437906744e2e350fd68fe7563d Signed-off-by:
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Toralf Förster authored
spotted by cppcheck Signed-off-by:
Toralf Förster <toralf.foerster@gmx.de> Tested-by:
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Todd Fujinaka authored
Bump version number. Signed-off-by:
Todd Fujinaka <todd.fujinaka@intel.com> Tested-by:
Aaron Brown <aaron.f.brown@intel.com> Signed-off-by:
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Carolyn Wyborny authored
This patch adds a check and prints the error cause register value when the hardware detects a malformed packet. This is a very unlikely scenario but has been seen occasionally, so printing the message to assist the user. Signed-off-by:
Carolyn Wyborny <carolyn.wyborny@intel.com> Signed-off-by:
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