- 02 May, 2012 3 commits
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Bruce Allan authored
Secondary unicast and multicast addresses are added to the Receive Address registers (RAR) for most parts supported by the driver. For 82579, there is only one actual RAR and a number of Shared Receive Address registers (SHRAR) that are shared among the driver and f/w which can be reserved and write-protected by the f/w. On this device, use the SHRARs that are not taken by f/w for the additional addresses. Add a MAC ops function pointer infrastructure (similar to other MAC operations in the driver) for setting RARs, introduce a new rar_set function for 82579 and convert the existing code that sets RARs on other devices to a generic rar_set function. Signed-off-by:
Bruce Allan <bruce.w.allan@intel.com> Tested-by:
Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Bruce Allan authored
The PHY initialization flows and assorted workarounds for 82577/8/9 done during driver load and resume from Sx should be the same yet they are not. Combine the current flows/workarounds into a common set of functions that are called during the different code paths. Signed-off-by:
Aaron Brown <aaron.f.brown@intel.com> Signed-off-by:
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Bruce Allan authored
An update to the EEPROM on 82579 will extend a delay in hardware to fix an issue with WoL not working after a G3->S5 transition which is unrelated to the driver. However, this extended delay conflicts with nominal operation of the device when it is initialized by the driver and after every reset of the hardware (i.e. the driver starts configuring the device before the hardware is done with it's own configuration work). The workaround for when the driver is in control of the device is to tell the hardware after every reset the configuration delay should be the original shorter one. Some pre-existing variables are renamed generically to be re-used with new register accesses. Signed-off-by:
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- 01 May, 2012 35 commits
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Eric Dumazet authored
Add ECN (Explicit Congestion Notification) marking capability to netem tc qdisc add dev eth0 root netem drop 0.5 ecn Instead of dropping packets, try to ECN mark them. Signed-off-by:
Eric Dumazet <edumazet@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Cc: Hagen Paul Pfeifer <hagen@jauu.net> Cc: Stephen Hemminger <shemminger@vyatta.com> Acked-by:
Hagen Paul Pfeifer <hagen@jauu.net> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
remove useless casts and rename variables for less confusion. Signed-off-by:
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Eric Dumazet authored
TCP or UDP stacks have big enough latencies that prefetching next pointer is worth it. Signed-off-by:
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James Chapman authored
The netlink API lets users create unmanaged L2TPv3 tunnels using iproute2. Until now, a request to create an unmanaged L2TPv3 IP encapsulation tunnel over IPv6 would be rejected with EPROTONOSUPPORT. Now that l2tp_ip6 implements sockets for L2TP IP encapsulation over IPv6, we can add support for that tunnel type. Signed-off-by:
James Chapman <jchapman@katalix.com> Signed-off-by:
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Chris Elston authored
L2TPv3 defines an IP encapsulation packet format where data is carried directly over IP (no UDP). The kernel already has support for L2TP IP encapsulation over IPv4 (l2tp_ip). This patch introduces support for L2TP IP encapsulation over IPv6. The implementation is derived from ipv6/raw and ipv4/l2tp_ip. Signed-off-by:
Chris Elston <celston@katalix.com> Signed-off-by:
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Chris Elston authored
For implementing other protocols on top of IPv6, such as L2TPv3's IP encapsulation over ipv6, we'd like to call some IPv6 functions which are not currently exported. This patch exports them. Signed-off-by:
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Chris Elston authored
This patch adds support for unmanaged L2TPv3 tunnels over IPv6 using the netlink API. We already support unmanaged L2TPv3 tunnels over IPv4. A patch to iproute2 to make use of this feature will be submitted separately. Signed-off-by:
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Chris Elston authored
If an L2TP tunnel uses IPv6, make sure the l2tp debugfs file shows the IPv6 address correctly. Signed-off-by:
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James Chapman authored
Userspace uses connect() to associate a pppol2tp socket with a tunnel socket. This needs to allow the caller to supply the new IPv6 sockaddr_pppol2tp structures if IPv6 is used. Signed-off-by:
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James Chapman authored
Checkpatch warns about the use of __attribute__((packed)). So use the recommended __packed syntax instead. Signed-off-by:
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James Chapman authored
The l2tp_ip socket currently maintains packet/byte stats in its private socket structure. But these counters aren't exposed to userspace and so serve no purpose. The counters were also smp-unsafe. So this patch just gets rid of the stats. While here, change a couple of internal __u32 variables to u32. Signed-off-by:
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James Chapman authored
Cleanup the l2tp_ip code to make use of an existing ipv4 support function. Signed-off-by:
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James Chapman authored
L2TP uses 64-bit counters but since these are not updated atomically, we need to make them safe for smp. This patch addresses that. Signed-off-by:
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Huang, Xiong authored
PHY polling code for FPGA is considered in every MDIO R/W API. no need to add additional code to atl1c_change_mtu. Signed-off-by:
xiong <xiong@qca.qualcomm.com> Tested-by:
David Liu <dwliu@qca.qaulcomm.com> Signed-off-by:
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Huang, Xiong authored
L0S might be unstable if no cable link, only enable it when link up. Signed-off-by:
Liu David <dwliu@qca.qualcomm.com> Signed-off-by:
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Huang, Xiong authored
There may be tx-skbs still pending in HW when PHY link down. Reset MAC will make the DMA engine go to the start point. and release all pending skbs. Note: Reset MAC will clear any interrupt status and mask. Signed-off-by:
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Huang, Xiong authored
common_task might be running while close routine is called, wait/cancel it. Signed-off-by:
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Huang, Xiong authored
The hardware incorrectly process L0S/L1 entrance if the chipset/root response after specific/shorter timer and cause system hang. Enlarge the timeout value to avoid this issue. Signed-off-by:
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Huang, Xiong authored
On some platform with EEPROM/OTP existing, the BIOS could overwrite a new MAC address for the NIC. so, the permanent mac address should be from BIOS. the address is restored when driver removing. Voltage raising isn't applicable for l1d. Replace swab32 with htonl for big/little endian platform. related Registers are refined as well. Signed-off-by:
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Huang, Xiong authored
The Close-action is done by atl1c_reset_pcie, remove it from atl1c_get_permanent_address. Signed-off-by:
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Huang, Xiong authored
WoL status is read-clear and should be cleared when in S0 status. putting it in atl1c_reset_pcie is more suitable than in atl1c_get_permanent_address. Signed-off-by:
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Huang, Xiong authored
On some platforms the PHY settings need to change depending on the cable link status to get better stability. Signed-off-by:
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Huang, Xiong authored
All supported devices have one issue that msi interrupt doesn't assert if pci command register bit (PCI_COMMAND_INTX_DISABLE) is set. Add workaround in drivers/pci/quirks.c Signed-off-by:
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Eric Dumazet authored
Before doing skb->head_frag work on bnx2x driver, I found too much stuff was inlined in bnx2x/bnx2x_cmn.h for no good reason and made my work not very easy. Move some big functions out of this include file to the respective .c file. A lot of inline keywords are not needed at all in this huge driver. text data bss dec hex filename 490083 1270 56 491409 77f91 bnx2x/bnx2x.ko.before 484206 1270 56 485532 7689c bnx2x/bnx2x.ko Signed-off-by:
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RongQing.Li authored
The reset logic after a Rx FIFO overrun will clear the programmed multicast addresses. This patch fixes the issue by reprogramming the registers after the reset. The commit eefc48b0 ("pch_gbe: reprogram multicast address register on reset") tried to fix this problem, but it introduces unnecessary codes. In fact, all multicast addresses have been saved in netdev->mc, So we can call pch_gbe_set_multi() directly after reset_hw and reset_rx. This commit kills 50+ line codes Cc: Richard Cochran <richardcochran@gmail.com> Cc: Takahiro Shimizu <tshimizu818@gmail.com> Signed-off-by:
RongQing.Li <roy.qing.li@gmail.com> Acked-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
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Eric Dumazet authored
__skb_splice_bits() can check if skb to be spliced has its skb->head mapped to a page fragment, instead of a kmalloc() area. If so we can avoid a copy of the skb head and get a reference on underlying page. Signed-off-by:
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Eric Dumazet authored
TCP coalesce can check if skb to be merged has its skb->head mapped to a page fragment, instead of a kmalloc() area. We had to disable coalescing in this case, for performance reasons. We 'upgrade' skb->head as a fragment in itself. This reduces number of cache misses when user makes its copies, since a less sk_buff are fetched. This makes receive and ofo queues shorter and thus reduce cache line misses in TCP stack. This is a followup of patch "net: allow skb->head to be a page fragment" Tested with tg3 nic, with GRO on or off. We can see "TCPRcvCoalesce" counter being incremented. Signed-off-by:
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Eric Dumazet authored
GRO can check if skb to be merged has its skb->head mapped to a page fragment, instead of a kmalloc() area. We 'upgrade' skb->head as a fragment in itself This avoids the frag_list fallback, and permits to build true GRO skb (one sk_buff and up to 16 fragments), using less memory. This reduces number of cache misses when user makes its copy, since a single sk_buff is fetched. This is a followup of patch "net: allow skb->head to be a page fragment" Signed-off-by:
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Eric Dumazet authored
This patch converts tg3 driver, one of our reference drivers, to use new build_skb() api in frag mode. Instead of using kmalloc() to allocate the memory block that will be used by build_skb() as skb->head, we use a page fragment. This is a followup of patch "net: allow skb->head to be a page fragment" This allows GRO, TCP coalescing, and splice() to be more efficient. Incidentally, this also removes SLUB slow path contention in kfree() Signed-off-by:
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Eric Dumazet authored
skb->head is currently allocated from kmalloc(). This is convenient but has the drawback the data cannot be converted to a page fragment if needed. We have three spots were it hurts : 1) GRO aggregation When a linear skb must be appended to another skb, GRO uses the frag_list fallback, very inefficient since we keep all struct sk_buff around. So drivers enabling GRO but delivering linear skbs to network stack aren't enabling full GRO power. 2) splice(socket -> pipe). We must copy the linear part to a page fragment. This kind of defeats splice() purpose (zero copy claim) 3) TCP coalescing. Recently introduced, this permits to group several contiguous segments into a single skb. This shortens queue lengths and save kernel memory, and greatly reduce probabilities of TCP collapses. This coalescing doesnt work on linear skbs (or we would need to copy data, this would be too slow) Given all these issues, the following patch introduces the possibility of having skb->head be a fragment in itself. We use a new skb flag, skb->head_frag to carry this information. build_skb() is changed to accept a frag_size argument. Drivers willing to provide a page fragment instead of kmalloc() data will set a non zero value, set to the fragment size. Then, on situations we need to convert the skb head to a frag in itself, we can check if skb->head_frag is set and avoid the copies or various fallbacks we have. This means drivers currently using frags could be updated to avoid the current skb->head allocation and reduce their memory footprint (aka skb truesize). (thats 512 or 1024 bytes saved per skb). This also makes bpf/netfilter faster since the 'first frag' will be part of skb linear part, no need to copy data. Signed-off-by:
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Willem de Bruijn authored
Insert an skb_tx_timestamp call in both ndo_start_xmit routines Tested to work for the nv_start_xmit_optimized case Signed-off-by:
Willem de Bruijn <willemb@google.com> Acked-by:
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Willem de Bruijn authored
Signed-off-by:
Eilon Greenstein <eilong@broadcom.com> Acked-by:
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Willem de Bruijn authored
Signed-off-by:
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Willem de Bruijn authored
Signed-off-by:
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- 30 Apr, 2012 2 commits
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Paul Gortmaker authored
Some of the comment blocks are floating in limbo between two functions, or between blocks of code. Delete the extra line feeds between any comment and its associated following block of code, to be consistent with the majority of the rest of the kernel. Also delete trailing newlines at EOF and fix a couple trivial typos in existing comments. This is a 100% cosmetic change with no runtime impact. We get rid of over 500 lines of non-code, and being blank line deletes, they won't even show up as noise in git blame. Signed-off-by:Paul Gortmaker <paul.gortmaker@windriver.com>
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Herbert Xu authored
Unfortunately it seems that I didn't properly test the case of an expired external querier in the recent multicast bridge series. The setup of the timer in that case is completely broken and leads to a NULL-pointer dereference. This patch fixes it. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Acked-by:
Stephen Hemminger <shemminger@vyatta.com> Signed-off-by:
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