- 03 Nov, 2012 15 commits
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Eric Dumazet authored
For passive TCP connections using TCP_DEFER_ACCEPT facility, we incorrectly increment req->retrans each time timeout triggers while no SYNACK is sent. SYNACK are not sent for TCP_DEFER_ACCEPT that were established (for which we received the ACK from client). Only the last SYNACK is sent so that we can receive again an ACK from client, to move the req into accept queue. We plan to change this later to avoid the useless retransmit (and potential problem as this SYNACK could be lost) TCP_INFO later gives wrong information to user, claiming imaginary retransmits. Decouple req->retrans field into two independent fields : num_retrans : number of retransmit num_timeout : number of timeouts num_timeout is the counter that is incremented at each timeout, regardless of actual SYNACK being sent or not, and used to compute the exponential timeout. Introduce inet_rtx_syn_ack() helper to increment num_retrans only if ->rtx_syn_ack() succeeded. Use inet_rtx_syn_ack() from tcp_check_req() to increment num_retrans when we re-send a SYNACK in answer to a (retransmitted) SYN. Prior to this patch, we were not counting these retransmits. Change tcp_v[46]_rtx_synack() to increment TCP_MIB_RETRANSSEGS only if a synack packet was successfully queued. Reported-by:
Yuchung Cheng <ycheng@google.com> Signed-off-by:
Eric Dumazet <edumazet@google.com> Cc: Julian Anastasov <ja@ssi.bg> Cc: Vijay Subramanian <subramanian.vijay@gmail.com> Cc: Elliott Hughes <enh@google.com> Cc: Neal Cardwell <ncardwell@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Ben Hutchings authored
Commit e5a55a89 ('net: create generic bridge ops') broke the handling of a non-zero starting index in rtnl_bridge_getlink() (based on the old br_dump_ifinfo()). When the starting index is non-zero, we need to increment the current index for each entry that we are skipping. Also, we need to check the index before both cases, since we may previously have stopped iteration between getting information about a device from its master and from itself. Signed-off-by:
Ben Hutchings <bhutchings@solarflare.com> Tested-by:
John Fastabend <john.r.fastabend@intel.com> Signed-off-by:
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Nicolas Dichtel authored
fib6_add_rt2node() will reject the nexthop if this flag is set, so we perform the check only for the first nexthop. Signed-off-by:
Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by:
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Ben Hutchings authored
Since this array is no longer part of the bridge driver, it should have an 'eth' prefix not 'br'. We also assume that either it's 16-bit-aligned or the architecture has efficient unaligned access. Ensure the first of these is true by explicitly aligning it. Signed-off-by:
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Ben Hutchings authored
Function name should include '_ether_addr'. Return type should be bool. Parameter name should be 'addr' not 'dest' (also matching kernel-doc). Signed-off-by:
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Ben Hutchings authored
Parse the string into an array of bytes rather than ints, so we can use is_link_local() rather than reimplementing it. Signed-off-by:
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Ben Hutchings authored
This was missed in commit a24006ed ('ptp: Enable clock drivers along with associated net/PHY drivers') which enabled sfc's clock driver unconditionally. Reported-by:
kbuild test robot <fengguang.wu@intel.com> Signed-off-by:
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Michael S. Tsirkin authored
It seems that to avoid deadlocks it is enough to poll vq before we are going to use the last buffer. This is faster than c70aa540. Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
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Michael S. Tsirkin authored
Even when vhost-net is in zero-copy transmit mode, net core might still decide to copy the skb later which is somewhat slower than a copy in user context: data copy overhead is added to the cost of page pin/unpin. The result is that enabling tx zero copy option leads to higher CPU utilization for guest to guest and guest to host traffic. To fix this, suppress zero copy tx after a given number of packets triggered late data copy. Re-enable periodically to detect workload changes. Signed-off-by:
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Michael S. Tsirkin authored
Zerocopy handling code is vhost-net specific. Move it from vhost.c/vhost.h out to net.c Signed-off-by:
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Michael S. Tsirkin authored
This will be used to disable zerocopy when error rate is high. Signed-off-by:
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Michael S. Tsirkin authored
Better document macros for DMA tracking. Add an explicit one for DMA in progress instead of relying on user supplying len != 1. Signed-off-by:
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Michael S. Tsirkin authored
When tun transmits a zero copy skb, it orphans the frags which might need to allocate extra memory, in atomic context. If that fails, notify ubufs callback before freeing the skb as a hint that device should disable zerocopy mode. Signed-off-by:
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Michael S. Tsirkin authored
Orphaning frags for zero copy skbs needs to allocate data in atomic context so is has a chance to fail. If it does we currently discard the skb which is safe, but we don't report anything to the caller, so it can not recover by e.g. disabling zero copy. Add an API to free skb reporting such errors: this is used by tun in case orphaning frags fails. Signed-off-by:
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Michael S. Tsirkin authored
Even if skb is marked for zero copy, net core might still decide to copy it later which is somewhat slower than a copy in user context: besides copying the data we need to pin/unpin the pages. Add a parameter reporting such cases through zero copy callback: if this happens a lot, device can take this into account and switch to copying in user context. This patch updates all users but ignores the passed value for now: it will be used by follow-up patches. Signed-off-by:
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- 02 Nov, 2012 1 commit
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-nextDavid S. Miller authored
Jeff Kirsher says: ==================== This series contains updates to igb, ixgbe and e1000. ==================== Signed-off-by:
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- 01 Nov, 2012 24 commits
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Amerigo Wang authored
#if defined(CONFIG_FOO) || defined(CONFIG_FOO_MODULE) can be replaced by #if IS_ENABLED(CONFIG_FOO) Cc: David S. Miller <davem@davemloft.net> Signed-off-by:
Cong Wang <amwang@redhat.com> Signed-off-by:
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Amerigo Wang authored
#if defined(CONFIG_FOO) || defined(CONFIG_FOO_MODULE) can be replaced by #if IS_ENABLED(CONFIG_FOO) Cc: David S. Miller <davem@davemloft.net> Signed-off-by:
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Nicolas Dichtel authored
Signed-off-by:
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stephen hemminger authored
This was picked up by sparse. Signed-off-by:
Stephen Hemminger <shemminger@vyatta.com> Signed-off-by:
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Frank Li authored
This patch adds a driver for the FEC(MX6) that offers time stamping and a PTP haderware clock. Because FEC\ENET(MX6) hardware frequency adjustment is complex, we have implemented this in software by changing the multiplication factor of the timecounter. Signed-off-by:
Frank Li <Frank.Li@freescale.com> Signed-off-by:
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Frank Li authored
Set GRP1 BIT21 ENET_CLK_SEL: Enet tx reference clk from internal clock from anatop (loopback through pad), this clock also sent out to external PHY Signed-off-by:
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Frank Li authored
Add ENET 1588 clock input pin MX6Q_PAD_GPIO_16__ENET_ANATOP_ETHERNET_REF_OUT and anatop PLL8 clock source for ENET Signed-off-by:
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Frank Li authored
A new file fec_ptp.c will use fec_enet_private to support 1588 PTP move such structure to common header file fec.h Signed-off-by:
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Hannes Frederic Sowa authored
Signed-off-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
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Richard Cochran authored
This patch hooks into the CPTS code and adds support for the HWTSTAMP ioctl. The patch includes code for the CPSW version found in the dm814x even though the background device tree support for this board is still missing. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
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Richard Cochran authored
This patch adds a way to configure the CPTS input clock scaling factors via the device tree. Signed-off-by:
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Richard Cochran authored
Because time stamping on both external ports of the switch simultaneously is positively useless from the application's point of view, this patch provides a DT configuration method to choose the active port. Signed-off-by:
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Richard Cochran authored
Signed-off-by:
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Richard Cochran authored
This patch adds a driver for the CPTS that offers time stamping and a PTP hardware clock. Because some of the CPTS hardware variants (like the am335x) do not support frequency adjustment, we have implemented this in software by changing the multiplication factor of the timecounter. Signed-off-by:
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Richard Cochran authored
This patch fixes the cpsw driver to operate correctly with both the dm814x and the am335x versions of the switch hardware. Signed-off-by:
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Richard Cochran authored
This patch lets the CPSW driver remember the version number in order to support the two different variants already in the wild. Signed-off-by:
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Richard Cochran authored
Signed-off-by:
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Richard Cochran authored
The code mixes up the CPSW_SS and the CPSW_WR register naming. This patch changes the names to conform to the published Technical Reference Manual from TI, in order to make working on the code less confusing. Signed-off-by:
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Mugunthan V N authored
Adding multicast address to ALE table via netdev ops to subscribe, transmit or receive multicast frames to and from the network Signed-off-by:
Mugunthan V N <mugunthanvnm@ti.com> Acked-by:
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Jean-Christophe PLAGNIOL-VILLARD authored
If no pinctrl available just report a warning as some architecture may not need to do anything. Signed-off-by:
Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> [nicolas.ferre@atmel.com: adapt the error path, remove unneeded headers] Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by:
Joachim Eastwood <manabian@gmail.com> Signed-off-by:
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Havard Skinnemoen authored
Make the ethernet frame payload word-aligned, possibly making the memcpy into the skb a bit faster. This will be even more important after we eliminate the copy altogether. Also eliminate the redundant RX_OFFSET constant -- it has the same definition and purpose as NET_IP_ALIGN. Signed-off-by:
Havard Skinnemoen <havard@skinnemoen.net> [nicolas.ferre@atmel.com: adapt to newer kernel] Signed-off-by:
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Nicolas Ferre authored
Handle all TX errors, not only underruns. TX error management is deferred to a dedicated workqueue. Reinitialize the TX ring after treating all remaining frames, and restart the controller when everything has been cleaned up properly. Napi is not stopped during this task as the driver only handles napi for RX for now. With this sequence, we do not need a special check during the xmit method as the packets will be caught by TX disable during workqueue execution. Signed-off-by:
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Nicolas Ferre authored
Add macb_get_regs() ethtool function and its helper function: macb_get_regs_len(). The version field is deduced from the IP revision which gives the "MACB or GEM" information. An additional version field is reserved. Signed-off-by:
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Havard Skinnemoen authored
Instead of masking head and tail every time we increment them, just let them wrap through UINT_MAX and mask them when subscripting. Add simple accessor functions to do the subscripting properly to minimize the chances of messing this up. This makes the code slightly smaller, and hopefully faster as well. Also, doing the ring buffer management this way will simplify things a lot when making the ring sizes configurable in the future. Available number of descriptors in ring buffer function by David Laight. Signed-off-by:
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