08 Jul, 2013
1 commit
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Continue the approach taken by commit d2b57063e4a ("IB/core: Reserve
bits in enum ib_qp_create_flags for low-level driver use") and add
reserved entries to the ib_qp_type and ib_wr_opcode enums. Low-level
drivers can then define macros to use these reserved values, giving
proper names to the macros for readability. Also add a range of
reserved flags to enum ib_send_flags.The mlx5 IB driver uses the new additions.
Signed-off-by: Jack Morgenstein
Signed-off-by: Roland Dreier
20 Jun, 2013
39 commits
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This typedef is unnecessary and should just be removed.
Signed-off-by: Joe Perches
Signed-off-by: David S. Miller -
This typedef is unnecessary and should just be removed.
Signed-off-by: Joe Perches
Signed-off-by: David S. Miller -
This patch removes an empty ifdef from inet_frag_intern()
in net/ipv4/inet_fragment.c.commit b67bfe0d42cac56c512dd5da4b1b347a23f4b70a
(hlist: drop the node parameter from iterators) removed hlist from
net/ipv4/inet_fragment.c, but did not remove the enclosing ifdef command,
which is now empty.Signed-off-by: Rami Rosen
Signed-off-by: David S. Miller -
htb_sched structures are big, and source of false sharing on SMP.
Every time a packet is queued or dequeue, many cache lines must be
touched because structures are not lay out properly.By carefully splitting htb_sched in two parts, and define sub structures
to increase data locality, we can improve performance dramatically on
SMP.New htb_prio structure can also be used in htb_class to increase data
locality.I got 26 % performance increase on a 24 threads machine, with 200
concurrent netperf in TCP_RR mode, using a HTB hierarchy of 4 classes.Signed-off-by: Eric Dumazet
Cc: Tom Herbert
Signed-off-by: David S. Miller -
In previous discussions, I tried to find some reasonable heuristics
for delayed ACK, however this seems not possible, according to Eric:"ACKS might also be delayed because of bidirectional
traffic, and is more controlled by the application
response time. TCP stack can not easily estimate it.""ACK can be incredibly useful to recover from losses in
a short time.The vast majority of TCP sessions are small lived, and we
send one ACK per received segment anyway at beginning or
retransmits to let the sender smoothly increase its cwnd,
so an auto-tuning facility wont help them that much."and according to David:
"ACKs are the only information we have to detect loss.
And, for the same reasons that TCP VEGAS is fundamentally
broken, we cannot measure the pipe or some other
receiver-side-visible piece of information to determine
when it's "safe" to stretch ACK.And even if it's "safe", we should not do it so that losses are
accurately detected and we don't spuriously retransmit.The only way to know when the bandwidth increases is to
"test" it, by sending more and more packets until drops happen.
That's why all successful congestion control algorithms must
operate on explicited tested pieces of information.Similarly, it's not really possible to universally know if
it's safe to stretch ACK or not."It still makes sense to enable or disable quick ack mode like
what TCP_QUICK_ACK does.Similar to TCP_QUICK_ACK option, but for people who can't
modify the source code and still wants to control
TCP delayed ACK behavior. As David suggested, this should belong
to per-path scope, since different pathes may want different
behaviors.Cc: Eric Dumazet
Cc: Rick Jones
Cc: Stephen Hemminger
Cc: "David S. Miller"
Cc: Thomas Graf
CC: David Laight
Signed-off-by: Cong Wang
Signed-off-by: David S. Miller -
Signed-off-by: Dave Jones
Signed-off-by: David S. Miller -
Pci core has been saved pm cap register offset by pdev->pm_cap in pci_pm_init()
in init path. So we can use pdev->pm_cap instead of using
pci_find_capability(pdev, PCI_CAP_ID_PM) for better performance and simplified code.Signed-off-by: Yijing Wang
Cc: Michael Chan
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: David S. Miller -
Pci core has been saved pm cap register offset by pdev->pm_cap in pci_pm_init()
in init path. So we can use pdev->pm_cap instead of using
pci_find_capability(pdev, PCI_CAP_ID_PM) for better performance and simplified code.Signed-off-by: Yijing Wang
Cc: "David S. Miller"
Cc: Patrick McHardy
Cc: Bill Pemberton
Cc: Greg Kroah-Hartman
Cc: netdev@vger.kernel.org (open list:NETWORKING DRIVERS)
Signed-off-by: David S. Miller -
Pci_enable_device() will set device power state to D0,
so it's no need to do it again in bnx2x_init_dev().
Also remove redundant PM Cap find code, because pci core
has been saved the pci device pm cap value.Signed-off-by: Yijing Wang
Cc: Eilon Greenstein
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Yuval Mintz
Signed-off-by: David S. Miller -
ETRAX_ETHERNET selects ETHERNET and MII, which depend on NETDEVICES.
I don't think anything should select NETDEVICES, so make it a
dependency. It also doesn't need to select or depend on ETHERNET,
which has nothing to do with the Ethernet library functions.BPCTL selects MII, which depends on NETDEVICES. But everything in the
drivers/staging/silicom directory is related to net devices, so make
NET_VENDOR_SILICOM depend on NETDEVICES and remove the now-redundant
dependencies on NET.Signed-off-by: Ben Hutchings
Signed-off-by: David S. Miller -
This has no dependency on any of the drivers under NET_CORE.
Signed-off-by: Ben Hutchings
Acked-by: Nicolas Ferre
Signed-off-by: David S. Miller -
All drivers that select MII also need to select NET_CORE because MII
depends on it. This is a bit ridiculous because NET_CORE is just a
menu option that doesn't enable any code by itself.There is also no need for it to be a visible option, since its users
all select it.Signed-off-by: Ben Hutchings
Acked-by: Jeff Kirsher
Signed-off-by: David S. Miller -
Signed-off-by: Weiping Pan
Signed-off-by: David S. Miller -
Also, cleanup bond_alb_handle_active_change() from 2 identical ifs.
Signed-off-by: Veaceslav Falico
Signed-off-by: David S. Miller -
be_find_vfs() is no longer needed as the common PCI calls provide the same
functionality.Signed-off-by: Sathya Perla
Signed-off-by: David S. Miller -
The use of this attribute has been added in 32b8a8e59c9c (sit: add IPv4 over
IPv4 support). It is optional, by default proto is IPPROTO_IPV6.Signed-off-by: Nicolas Dichtel
Signed-off-by: David S. Miller -
The current situation is that SOCK_MIN_RCVBUF is 2048 + sizeof(struct sk_buff))
while SOCK_MIN_SNDBUF is 2048. Since in both cases, skb->truesize is used for
sk_{r,w}mem_alloc accounting, we should have both sizes adjusted via defining a
TCP_SKB_MIN_TRUESIZE.Further, as Eric Dumazet points out, the minimal skb truesize in transmit path is
SKB_TRUESIZE(2048) after commit f07d960df33c5 ("tcp: avoid frag allocation for
small frames"), and tcp_sendmsg() tries to limit skb size to half the congestion
window, meaning we try to build two skbs at minimum. Thus, having SOCK_MIN_SNDBUF
as 2048 can hit a small regression for some applications setting to low
SO_SNDBUF / SO_RCVBUF. Note that we define a TCP_SKB_MIN_TRUESIZE, because
SKB_TRUESIZE(2048) adds SKB_DATA_ALIGN(sizeof(struct skb_shared_info)), but in
case of TCP skbs, the skb_shared_info is part of the 2048 bytes allocation for
skb->head.The minor adaption in sk_stream_moderate_sndbuf() is to silence a warning by
using a typed max macro, as similarly done in SOCK_MIN_RCVBUF occurences, that
would appear otherwise.Suggested-by: Eric Dumazet
Signed-off-by: Daniel Borkmann
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller -
thresh and interval are global resources,
only init net can change them.Signed-off-by: Gao feng
Signed-off-by: David S. Miller -
Though we don't export the /proc/sys/net/ipv[4,6]/neigh/default/
directory to the un-init_net, but we can still use cmd such as
"ip ntable change name arp_cache locktime 129" to change the locktime
of default neigh_parms.This patch disallows the un-init_net to find out the neigh_table.parms.
So the un-init_net will failed to influence the init_net.Signed-off-by: Gao feng
Signed-off-by: David S. Miller -
neigh_table.parms always exist and is initialized,kmemdup
can use it to create new neigh_parms, actually lookup_neigh_parms
here will return neigh_table.parms too.Signed-off-by: Gao feng
Signed-off-by: David S. Miller -
Check next packet availability by validating that HW has finished CQE
placement. This saves latency of another dma transaction performed to update
SB indexes.Signed-off-by: Dmitry Kravkov
Signed-off-by: Eilon Greenstein
Signed-off-by: David S. Miller -
Adds ndo_ll_poll method and locking for FPs between LL and the napi.
When receiving a packet we use skb_mark_ll to record the napi it came from.
Add each napi to the napi_hash right after netif_napi_add().Signed-off-by: Dmitry Kravkov
Signed-off-by: Eilon Greenstein
Reviewed-by: Eric Dumazet
Signed-off-by: David S. Miller -
Signed-off-by: Amir Vadai
Signed-off-by: David S. Miller -
Add basic support for LLS.
Signed-off-by: Amir Vadai
Reviewed-by: Eric Dumazet
Signed-off-by: David S. Miller -
Pravin B Shelar says:
====================
Following patch series adds support for gre tunneling.
First six patches extend kernel gre and ip_tunnel modules
api so that there is more code sharing between gre modules
and ovs. Rest of patches adds ovs tunneling infrastructre
and gre protocol vport.V2 fixes two patches according to comments from Jesse.
====================Signed-off-by: David S. Miller
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Add gre vport implementation. Most of gre protocol processing
is pushed to gre module. It make use of gre demultiplexer
therefore it can co-exist with linux device based gre tunnels.Signed-off-by: Pravin B Shelar
Acked-by: Jesse Gross
Signed-off-by: David S. Miller -
Following patch adds start offset for sw_flow-key, so that we can
skip tunneling information in key for non-tunnel flows.Signed-off-by: Pravin B Shelar
Acked-by: Jesse Gross
Signed-off-by: David S. Miller -
MAX_ACTIONS_BUFSIZE limits action list size, set tunnel action
needs extra space on action list, for now increase max actions list limit.Signed-off-by: Pravin B Shelar
Acked-by: Jesse Gross
Signed-off-by: David S. Miller -
Add ovs tunnel interface for set tunnel action for userspace.
Signed-off-by: Pravin B Shelar
Acked-by: Jesse Gross
Signed-off-by: David S. Miller -
Rather than validating actions and then copying all actiaons
in one block, following patch does same operation in single pass.
This validate and copy action one by one. This is required for
ovs tunneling patch.This patch does not change any functionality.
Signed-off-by: Pravin B Shelar
Acked-by: Jesse Gross
Signed-off-by: David S. Miller -
This flag will be used by ovs tunneling.
Signed-off-by: Pravin B Shelar
Signed-off-by: David S. Miller -
Process skb tunnel header before sending packet to protocol handler.
this allows code sharing between gre and ovs gre modules.Signed-off-by: Pravin B Shelar
Signed-off-by: David S. Miller -
Refactor various ip tunnels xmit functions and extend iptunnel_xmit()
so that there is more code sharing.Signed-off-by: Pravin B Shelar
Signed-off-by: David S. Miller -
This is required for OVS GRE offloading.
Signed-off-by: Pravin B Shelar
Signed-off-by: David S. Miller -
This is required for ovs gre module.
Signed-off-by: Pravin B Shelar
Signed-off-by: David S. Miller -
Currently there is only one user is allowed to register for gre
protocol. Following patch adds de-multiplexer. So that multiple
modules can listen on gre protocol e.g. kernel gre devices and ovs.Signed-off-by: Pravin B Shelar
Signed-off-by: David S. Miller -
Use cmpxchg() for atomic protocol registration which saves
code and data space.Signed-off-by: Pravin B Shelar
Signed-off-by: David S. Miller -
The only R8A7740 specific #ifdef hindering ARM multiplatform build is left in
sh_eth_rx(): it covers the code shifting Rx buffer descriptor word 0 by 16. Get
rid of the #ifdef by adding 'shift_rd0' field to the 'struct sh_eth_cpu_data',
making the shift dependent on it, and setting it to 1 for the R8A7740 case...Signed-off-by: Sergei Shtylyov
Signed-off-by: David S. Miller -
Fix the comment to 'enum TD_STS_BIT', reformat the values, and add a couple of
values missing before (though unused by the driver).Signed-off-by: Sergei Shtylyov
Signed-off-by: David S. Miller
