- 01 5月, 2012 36 次提交
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由 Eric Dumazet 提交于
TCP or UDP stacks have big enough latencies that prefetching next pointer is worth it. Signed-off-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 James Chapman 提交于
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: NJames Chapman <jchapman@katalix.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Chris Elston 提交于
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: NChris Elston <celston@katalix.com> Signed-off-by: NJames Chapman <jchapman@katalix.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Chris Elston 提交于
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: NChris Elston <celston@katalix.com> Signed-off-by: NJames Chapman <jchapman@katalix.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Chris Elston 提交于
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: NChris Elston <celston@katalix.com> Signed-off-by: NJames Chapman <jchapman@katalix.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Chris Elston 提交于
If an L2TP tunnel uses IPv6, make sure the l2tp debugfs file shows the IPv6 address correctly. Signed-off-by: NChris Elston <celston@katalix.com> Signed-off-by: NJames Chapman <jchapman@katalix.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 James Chapman 提交于
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: NJames Chapman <jchapman@katalix.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 James Chapman 提交于
Checkpatch warns about the use of __attribute__((packed)). So use the recommended __packed syntax instead. Signed-off-by: NJames Chapman <jchapman@katalix.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 James Chapman 提交于
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: NJames Chapman <jchapman@katalix.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 James Chapman 提交于
Cleanup the l2tp_ip code to make use of an existing ipv4 support function. Signed-off-by: NJames Chapman <jchapman@katalix.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 James Chapman 提交于
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: NJames Chapman <jchapman@katalix.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Huang, Xiong 提交于
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: Nxiong <xiong@qca.qualcomm.com> Tested-by: NDavid Liu <dwliu@qca.qaulcomm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Huang, Xiong 提交于
L0S might be unstable if no cable link, only enable it when link up. Signed-off-by: Nxiong <xiong@qca.qualcomm.com> Tested-by: NLiu David <dwliu@qca.qualcomm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Huang, Xiong 提交于
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: Nxiong <xiong@qca.qualcomm.com> Tested-by: NLiu David <dwliu@qca.qualcomm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Huang, Xiong 提交于
common_task might be running while close routine is called, wait/cancel it. Signed-off-by: Nxiong <xiong@qca.qualcomm.com> Tested-by: NLiu David <dwliu@qca.qualcomm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Huang, Xiong 提交于
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: Nxiong <xiong@qca.qualcomm.com> Tested-by: NLiu David <dwliu@qca.qualcomm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Huang, Xiong 提交于
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: Nxiong <xiong@qca.qualcomm.com> Tested-by: NLiu David <dwliu@qca.qualcomm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Huang, Xiong 提交于
The Close-action is done by atl1c_reset_pcie, remove it from atl1c_get_permanent_address. Signed-off-by: Nxiong <xiong@qca.qualcomm.com> Tested-by: NLiu David <dwliu@qca.qualcomm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Huang, Xiong 提交于
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: Nxiong <xiong@qca.qualcomm.com> Tested-by: NLiu David <dwliu@qca.qualcomm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Huang, Xiong 提交于
On some platforms the PHY settings need to change depending on the cable link status to get better stability. Signed-off-by: Nxiong <xiong@qca.qualcomm.com> Tested-by: NLiu David <dwliu@qca.qualcomm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Huang, Xiong 提交于
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: Nxiong <xiong@qca.qualcomm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
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: NEric Dumazet <edumazet@google.com> Cc: Eilon Greenstein <eilong@broadcom.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Maciej Żenczykowski <maze@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Cc: Matt Carlson <mcarlson@broadcom.com> Cc: Michael Chan <mchan@broadcom.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 RongQing.Li 提交于
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: NRongQing.Li <roy.qing.li@gmail.com> Acked-by: NRichard Cochran <richardcochran@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
__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: NEric Dumazet <edumazet@google.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Maciej Żenczykowski <maze@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Cc: Matt Carlson <mcarlson@broadcom.com> Cc: Michael Chan <mchan@broadcom.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
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: NEric Dumazet <edumazet@google.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Maciej Żenczykowski <maze@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Cc: Matt Carlson <mcarlson@broadcom.com> Cc: Michael Chan <mchan@broadcom.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
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: NEric Dumazet <edumazet@google.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Maciej Żenczykowski <maze@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Cc: Matt Carlson <mcarlson@broadcom.com> Cc: Michael Chan <mchan@broadcom.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
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: NEric Dumazet <edumazet@google.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Maciej Żenczykowski <maze@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Cc: Matt Carlson <mcarlson@broadcom.com> Cc: Michael Chan <mchan@broadcom.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
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: NEric Dumazet <edumazet@google.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Maciej Żenczykowski <maze@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Cc: Matt Carlson <mcarlson@broadcom.com> Cc: Michael Chan <mchan@broadcom.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Willem de Bruijn 提交于
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: NWillem de Bruijn <willemb@google.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Willem de Bruijn 提交于
Signed-off-by: NWillem de Bruijn <willemb@google.com> Acked-by: NEilon Greenstein <eilong@broadcom.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Willem de Bruijn 提交于
Signed-off-by: NWillem de Bruijn <willemb@google.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Willem de Bruijn 提交于
Signed-off-by: NWillem de Bruijn <willemb@google.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Paul Gortmaker 提交于
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: NPaul Gortmaker <paul.gortmaker@windriver.com>
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由 Herbert Xu 提交于
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: NHerbert Xu <herbert@gondor.apana.org.au> Acked-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Reported-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 29 4月, 2012 4 次提交
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由 Benjamin LaHaise 提交于
Now that encap_rcv() works on IPv6 UDP sockets, wire L2TP up to IPv6. Support has been tested with and without hardware offloading. This version fixes the L2TP over localhost issue with incorrect checksums being reported. Signed-off-by: NBenjamin LaHaise <bcrl@kvack.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Benjamin LaHaise 提交于
Now that the sematics of udpv6_queue_rcv_skb() match IPv4's udp_queue_rcv_skb(), introduce the UDP encap_rcv() hook for IPv6. Signed-off-by: NBenjamin LaHaise <bcrl@kvack.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Benjamin LaHaise 提交于
In order to make sure that when the encap_rcv() hook is introduced it is not called with the socket lock held, move socket locking from callers into udpv6_queue_rcv_skb(), matching what happens in IPv4. Signed-off-by: NBenjamin LaHaise <bcrl@kvack.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Benjamin LaHaise 提交于
This is the first step in reworking the IPv6 UDP code to be structured more like the IPv4 UDP code. This patch creates __udpv6_queue_rcv_skb() with the equivalent sematics to __udp_queue_rcv_skb(), and wires it up to the backlog_rcv method. Signed-off-by: NBenjamin LaHaise <bcrl@kvack.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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