Thomas Graf [Thu, 29 Nov 2012 19:55:05 +0000 (20:55 +0100)]
openvswitch: Use eth_mac_addr() instead of duplicating it
bonus: if we ever are to use IFF_LIVE_ADDR_CHANGE for
anything further than to check availability in eth_mac_addr(),
Open vSwitch will be ready for that.
Signed-off-by: Thomas Graf <tgraf@redhat.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
Paul Marks [Mon, 3 Dec 2012 10:26:54 +0000 (10:26 +0000)]
ipv6: Fix default route failover when CONFIG_IPV6_ROUTER_PREF=n
I believe this commit from 2008 was incorrect:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=398bcbebb6f721ac308df1e3d658c0029bb74503
When CONFIG_IPV6_ROUTER_PREF is disabled, the kernel should follow
RFC4861 section 6.3.6: if no route is NUD_VALID, then traffic should be
sprayed across all routers (indirectly triggering NUD) until one of them
becomes NUD_VALID.
However, the following experiment demonstrates that this does not work:
1) Connect to an IPv6 network.
2) Change the router's MAC (and link-local) address.
The kernel will lock onto the first router and never try the new one, even
if the first becomes unreachable. This patch fixes the problem by
allowing rt6_check_neigh() to return 0; if all routers return 0, then
rt6_select() will fall back to round-robin behavior.
This patch should have no effect when CONFIG_IPV6_ROUTER_PREF=y.
Note that rt6_check_neigh() is only used in a boolean context, so I've
changed its return type accordingly.
Signed-off-by: Paul Marks <pmarks@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Historically tun supported two modes of operation:
- in default mode, a small number of packets would get queued
at the device, the rest would be queued in qdisc
- in one queue mode, all packets would get queued at the device
This might have made sense up to a point where we made the
queue depth for both modes the same and set it to
a huge value (500) so unless the consumer
is stuck the chance of losing packets is small.
Thus in practice both modes behave the same, but the
default mode has some problems:
- if packets are never consumed, fragments are never orphaned
which cases a DOS for sender using zero copy transmit
- overrun errors are hard to diagnose: fifo error is incremented
only once so you can not distinguish between
userspace that is stuck and a transient failure,
tcpdump on the device does not show any traffic
Userspace solves this simply by enabling IFF_ONE_QUEUE
but there seems to be little point in not doing the
right thing for everyone, by default.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Shmulik Ladkani [Sun, 2 Dec 2012 01:44:53 +0000 (01:44 +0000)]
ipv6: Make 'addrconf_rs_timer' send Router Solicitations (and re-arm itself) if Router Advertisements are accepted
As of 026359b [ipv6: Send ICMPv6 RSes only when RAs are accepted],
Router Solicitations are sent whenever kernel accepts Router
Advertisements on the interface.
However, this logic isn't reflected in 'addrconf_rs_timer'.
The timer fails to issue subsequent RS messages (and fails to re-arm
itself) if forwarding is enabled and the special hybrid mode is
enabled (accept_ra=2).
Fix the condition determining whether next RS should be sent, by using
'ipv6_accept_ra()'.
Reported-by: Ami Koren <amikoren@yahoo.com> Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
John Greene [Mon, 3 Dec 2012 06:19:33 +0000 (06:19 +0000)]
8139cp: properly support change of MTU values [v2]
The 8139cp driver has a change_mtu function that has not been
enabled since the dawn of the git repository. However, the
generic eth_change_mtu is not used in its place, so that
invalid MTU values can be set on the interface.
Original patch salvages the broken code for the single case of
setting the MTU while the interface is down, which is safe
and also includes the range check. Now enhanced to support up
or down interface.
v2: fix case where rxbufsz isn't changed in the up state case
Original patch from
http://lkml.indiana.edu/hypermail/linux/kernel/1202.2/00770.html
Testing: has been test on virtual 8139cp setup without issue,
have no access real hardware 8139cp, need testing help.
Signed-off-by: "John Greene" <jogreene@redhat.com> CC: "David S. Miller" <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Jason Wang [Sun, 2 Dec 2012 17:19:45 +0000 (17:19 +0000)]
tuntap: attach queue 0 before registering netdevice
We attach queue 0 after registering netdevice currently. This leads to call
netif_set_real_num_{tx|rx}_queues() after registering the netdevice. Since we
allow tun/tap has a maximum of 1024 queues, this may lead a huge number of
uevents to be injected to userspace since we create 2048 kobjects and then
remove 2046. Solve this problem by attaching queue 0 and set the real number of
queues before registering netdevice.
Reported-by: Jiri Slaby <jslaby@suse.cz> Tested-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
These packet counters are used to drive the zercopy
selection heuristic so nothing too bad happens if they are off a bit -
and they are also reset once in a while.
But it's cleaner to clear them when backend is set so that
we start in a known state.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call
The current SCTP stack is lacking a mechanism to have per association
statistics. This is an implementation modeled after OpenSolaris'
SCTP_GET_ASSOC_STATS.
Userspace part will follow on lksctp if/when there is a general ACK on
this.
V4:
- Move ipackets++ before q->immediate.func() for consistency reasons
- Move sctp_max_rto() at the end of sctp_transport_update_rto() to avoid
returning bogus RTO values
- return asoc->rto_min when max_obs_rto value has not changed
V3:
- Increase ictrlchunks in sctp_assoc_bh_rcv() as well
- Move ipackets++ to sctp_inq_push()
- return 0 when no rto updates took place since the last call
V2:
- Implement partial retrieval of stat struct to cope for future expansion
- Kill the rtxpackets counter as it cannot be precise anyway
- Rename outseqtsns to outofseqtsns to make it clearer that these are out
of sequence unexpected TSNs
- Move asoc->ipackets++ under a lock to avoid potential miscounts
- Fold asoc->opackets++ into the already existing asoc check
- Kill unneeded (q->asoc) test when increasing rtxchunks
- Do not count octrlchunks if sending failed (SCTP_XMIT_OK != 0)
- Don't count SHUTDOWNs as SACKs
- Move SCTP_GET_ASSOC_STATS to the private space API
- Adjust the len check in sctp_getsockopt_assoc_stats() to allow for
future struct growth
- Move association statistics in their own struct
- Update idupchunks when we send a SACK with dup TSNs
- return min_rto in max_rto when RTO has not changed. Also return the
transport when max_rto last changed.
Signed-off: Michele Baldessari <michele@acksyn.org> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch converts ep7211-sir driver to platform_driver.
Since driver can be used not only for EP7211 CPU, function names
was be renamed to generic clps711x...
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sun, 2 Dec 2012 07:33:10 +0000 (07:33 +0000)]
net: fix sparse endianness warnings on sock_common
# make C=2 CF=-D__CHECK_ENDIAN__ net/ipv4/inet_hashtables.o
...
net/ipv4/inet_hashtables.c:242:7: warning: restricted __portpair degrades to integer
net/ipv4/inet_hashtables.c:242:7: warning: restricted __addrpair degrades to integer
...
Move __portpair/__addrpair from include/net/inet_hashtables.h
to include/net/sock.h where we need them in struct sock_common
Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Ling Ma <ling.ma.program@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Sun, 2 Dec 2012 04:05:56 +0000 (04:05 +0000)]
bnx2x: fix 'Ethtool -A' when autoneg
When configuring pauses using 'ethtool -A', the requested values have
effect when used together with autoneg (up to this point, when configured
for autoneg, driver ignored requested pause configuration)
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Sun, 2 Dec 2012 04:05:54 +0000 (04:05 +0000)]
bnx2x: Handle a rarely missed interrupt
A rare case of no link due to a missed interrupt may occur due to a
race condition between acknowledging the IGU via the BAR and restoring the NIG
interrupt mask via the GRC.
To solve it, we wait for the IGU ack command to finish prior to restoring the
NIG interrupt mask.
Signed-off-by: Yaniv Rosner <yaniv.rosner@broadcom.com> Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Sun, 2 Dec 2012 04:05:53 +0000 (04:05 +0000)]
bnx2x: mask CPL_OF interrupt
Unmasked interrupt caused "FATAL HW block attention set2 0x20" messages
to erroneously appear, as the associated interrupt is fully recoverable.
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Barak Witkowski [Sun, 2 Dec 2012 04:05:52 +0000 (04:05 +0000)]
bnx2x: IGU parse error cause probe failure
If IGU parse error is encountered during the probing process, the error
propagates and the probe gracefully fails (until now, such errors were ignored,
later causing mischief).
Signed-off-by: Barak Witkowski <barak@broadcom.com> Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Sun, 2 Dec 2012 04:05:51 +0000 (04:05 +0000)]
bnx2x: Ext. config accessed only on non-E1x.
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Sun, 2 Dec 2012 04:05:50 +0000 (04:05 +0000)]
bnx2x: nvram enables dropless flow control
It is now possible to enable dropless flow control via nvram.
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Sun, 2 Dec 2012 04:05:49 +0000 (04:05 +0000)]
bnx2x: Correct advertised speed/duplex
If link is down due to management (and not due to actual phy link being lost),
driver should still behave as if the link is down; Querying via ethtool about
speed/duplex state should result in 'UNKNOWN' (same behaviour as when link is
actually down).
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Dmitry Kravkov [Sun, 2 Dec 2012 04:05:48 +0000 (04:05 +0000)]
bnx2x: Filter packets on FCoE rings
Whenever bnx2x fails to transmit a packet due to a full Tx ring, if the
ring size is zero (indicating an FCoE ring) driver filters the packet out
and gracefully continues.
Driver also gathers statistics on such filtered packets.
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Sun, 2 Dec 2012 04:05:45 +0000 (04:05 +0000)]
bnx2x: revised and corrected SPIO access
Changed naming convention of SPIO macros, and prevented access to invalid SPIOs.
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Amir Vadai [Sun, 2 Dec 2012 03:49:23 +0000 (03:49 +0000)]
net/mlx4_en: Set number of rx/tx channels using ethtool
Add support to changing number of rx/tx channels using
ethtool ('ethtool -[lL]'). Where the number of tx channels specified in ethtool
is the number of rings per user priority - not total number of tx rings.
Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Amir Vadai [Sun, 2 Dec 2012 03:49:22 +0000 (03:49 +0000)]
net/mlx4_en: Fix TX moderation info loss after set_ringparam is called
We need to re-set tx moderation information after calling set_ringparam
else default tx moderation will be used.
Also avoid related code duplication, by putting it in a utility function.
Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 2 Dec 2012 01:45:24 +0000 (20:45 -0500)]
Merge git://git.infradead.org/users/dwmw2/atm
David Woodhouse says:
====================
This is the result of pulling on the thread started by Krzysztof Mazur's
original patch 'pppoatm: don't send frames to destroyed vcc'.
Various problems in the pppoatm and br2684 code are solved, some of which
were easily triggered and would panic the kernel.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David Woodhouse [Thu, 29 Nov 2012 23:15:30 +0000 (23:15 +0000)]
solos-pci: clean up pclose() function
- Flush pending TX skbs from the queue rather than waiting for them all to
complete (suggested by Krzysztof Mazur <krzysiek@podlesie.net>).
- Clear ATM_VF_ADDR only when the PKT_PCLOSE packet has been submitted.
- Don't clear ATM_VF_READY at all — vcc_destroy_socket() does that for us.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Krzysztof Mazur [Wed, 28 Nov 2012 08:08:04 +0000 (09:08 +0100)]
br2684: allow assign only on a connected socket
The br2684 does not check if used vcc is in connected state,
causing potential Oops in pppoatm_send() when vcc->send() is called
on not fully connected socket.
Now br2684 can be assigned only on connected sockets; otherwise
-EINVAL error is returned.
Signed-off-by: Krzysztof Mazur <krzysiek@podlesie.net> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
David Woodhouse [Wed, 28 Nov 2012 00:05:52 +0000 (00:05 +0000)]
pppoatm: fix missing wakeup in pppoatm_send()
Now that we can return zero from pppoatm_send() for reasons *other* than
the queue being full, that means we can't depend on a subsequent call to
pppoatm_pop() waking the queue, and we might leave it stalled
indefinitely.
Use the ->release_cb() callback to wake the queue after the sock is
unlocked.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Krzysztof Mazur <krzysiek@podlesie.net>
David Woodhouse [Tue, 27 Nov 2012 23:28:36 +0000 (23:28 +0000)]
br2684: don't send frames on not-ready vcc
Avoid submitting packets to a vcc which is being closed. Things go badly
wrong when the ->pop method gets later called after everything's been
torn down.
Use the ATM socket lock for synchronisation with vcc_destroy_socket(),
which clears the ATM_VF_READY bit under the same lock. Otherwise, we
could end up submitting a packet to the device driver even after its
->ops->close method has been called. And it could call the vcc's ->pop
method after the protocol has been shut down. Which leads to a panic.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Krzysztof Mazur <krzysiek@podlesie.net>
David Woodhouse [Wed, 28 Nov 2012 00:03:11 +0000 (00:03 +0000)]
atm: add release_cb() callback to vcc
The immediate use case for this is that it will allow us to ensure that a
pppoatm queue is woken after it has to drop a packet due to the sock being
locked.
Note that 'release_cb' is called when the socket is *unlocked*. This is
not to be confused with vcc_release() — which probably ought to be called
vcc_close().
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Krzysztof Mazur <krzysiek@podlesie.net>
David Woodhouse [Tue, 27 Nov 2012 23:49:24 +0000 (23:49 +0000)]
solos-pci: wait for pending TX to complete when releasing vcc
We should no longer be calling the old pop routine for the vcc, after
vcc_release() has completed. Make sure we wait for any pending TX skbs
to complete, by waiting for our own PKT_PCLOSE control skb to be sent.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Wei Yongjun [Fri, 30 Nov 2012 20:01:25 +0000 (20:01 +0000)]
qlcnic: remove duplicated include from qlcnic_sysfs.c
Remove duplicated include.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Sony Chacko <sony.chacko@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
As of 026359b [ipv6: Send ICMPv6 RSes only when RAs are accepted], the
logic determining whether to send Router Solicitations is identical
to the logic determining whether kernel accepts Router Advertisements.
However the condition itself is repeated in several code locations.
Unify it by introducing 'ipv6_accept_ra()' accessor.
Also, simplify the condition expression, making it more readable.
No semantic change.
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 1 Dec 2012 16:30:10 +0000 (11:30 -0500)]
Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/bwh/sfc-next
Ben Hutchings says:
====================
1. More workarounds for TX queue flush failures that can occur during
interface reconfiguration.
2. Fix spurious failure of a firmware request running during a system
clock change, e.g. ntpd started at the same time as driver load.
3. Fix inconsistent statistics after a firmware upgrade.
4. Fix a variable (non-)initialisation in offline self-test that can
make it more disruptive than intended.
5. Fix a race that can (at least) cause an assertion failure.
6. Miscellaneous cleanup.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Tue, 13 Nov 2012 01:13:33 +0000 (01:13 +0000)]
ixgbe: Do not parse past IP header on fragments beyond the first
This change makes it so that only the first fragment in a series of fragments
will have the L4 header pulled. Previously we were always pulling the L4
header as well and in the case of UDP this can harm performance since only the
first fragment will have the header, the rest just contain data which should
be left in the paged portion of the packet.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Stephen Ko <stephen.s.ko@intel.com> Tested-by: Marcus Dennis <marcusx.e.dennis@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Bruce Allan [Wed, 28 Nov 2012 09:28:37 +0000 (09:28 +0000)]
e1000e: cosmetic cleanup of comments
Update comments to conform to the preferred style for networking code as
described in ./Documentation/CodingStyle and checked for in the recently
added checkpatch NETWORKING_BLOCK_COMMENT_STYLE test.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Carolyn Wyborny [Tue, 23 Oct 2012 12:54:33 +0000 (12:54 +0000)]
igb: Fix SerDes autoneg flow control.
This patch enables flow control to be set in SerDes autoneg mode. This is
done the way it is done for copper, but relies on a different set of register/bit
checks since this is all done within the MAC registers.
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Carolyn Wyborny [Thu, 22 Nov 2012 01:24:08 +0000 (01:24 +0000)]
igb: Workaround for global device reset problem on 82580.
Due to a hw errata, the global device reset doesn't always work on 82580
devices. This patch works around the problem not trying to do a global
device reset on these devices.
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
igb: Acquire, release semaphore for writing each EEPROM page
This patch allows software acquires and releases NVM resource for
writing each EEPROM page, instead of holding semaphore for the whole
data block which is too long and could trigger write fails on
unpredictable addresses.
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com> Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Carolyn Wyborny [Thu, 11 Oct 2012 02:15:45 +0000 (02:15 +0000)]
igb: Updates to read nvm function for i211 device
The i211 has an integrated secure space to store configuration information that is
usually stored in an EEPROM or flash type device. This patch updates the
read functions to return values or appropriate error codes to prevent
unnecessary init failures on some configuration schemes.
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com> Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
ixgbe: eliminate Smatch warnings in ixgbe_debugfs.c
This patch replaces calls to copy_to_user, copy_from_user, and the associated
logic, with calls to simple_read_from_buffer and simple_write_to_buffer
respectively. This was done to eliminate warnings generated by the Smatch
static analysis tool.
v2- Fix return values based community feedback
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> CC: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Josh Hay <joshua.a.hay@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Ben Hutchings [Wed, 28 Nov 2012 04:12:41 +0000 (04:12 +0000)]
sfc: Make module parameters really boolean
Most of the module parameters treated as boolean are currently exposed
as type int or uint. Defining them with the proper type is useful
documentation for both users and developers.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Sat, 1 Dec 2012 02:21:17 +0000 (02:21 +0000)]
sfc: Fix timekeeping in efx_mcdi_poll()
efx_mcdi_poll() uses get_seconds() to read the current time and to
implement a polling timeout. The use of this function was chosen
partly because it could easily be replaced in a co-sim environment
with a macro that read the simulated time.
Unfortunately the real get_seconds() returns the system time (real
time) which is subject to adjustment by e.g. ntpd. If the system time
is adjusted forward during a polled MCDI operation, the effective
timeout can be shorter than the intended 10 seconds, resulting in a
spurious failure. It is also possible for a backward adjustment to
delay detection of a areal failure.
Use jiffies instead, and change MCDI_RPC_TIMEOUT to be denominated in
jiffies. Also correct rounding of the timeout: check time > finish
(or rather time_after(time, finish)) and not time >= finish.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Daniel Pieczko [Tue, 2 Oct 2012 12:36:18 +0000 (13:36 +0100)]
sfc: Work-around flush timeout when flushes have completed
We sometimes hit a "failed to flush" timeout on some TX queues, but the
flushes have completed and the flush completion events seem to go missing.
In this case, we can check the TX_DESC_PTR_TBL register and drain the
queues if the flushes had finished.
[bwh: Minor fixes to coding style] Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Mon, 1 Oct 2012 19:58:35 +0000 (20:58 +0100)]
sfc: Reset driver's MAC stats after MC reboot seen
If the MC reboots then the stats it reports to us will have been
reset. We need to reset ours to get efx_update_diff_stat() working
properly.
(Ideally we would maintain stats across the reboot, but as this should
only happen immediately after a firmware upgrade it's not really worth
the trouble.)
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Tue, 18 Sep 2012 23:31:18 +0000 (00:31 +0100)]
sfc: Do not initialise buffer in efx_alloc_special_buffer()
Currently we initialise the newly allocated buffer to all-1s, which is
important for event queues but not for descriptor queues. And since
we also do that in efx_nic_init_eventq(), it is completely pointless
to do it here.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Tue, 18 Sep 2012 00:56:50 +0000 (01:56 +0100)]
sfc: Remove confusing MMIO functions
efx_writed_table() uses a step of 16 bytes but efx_readd_table() uses
a step of 4 bytes. Why are they different?
Firstly, register access is asymmetric:
- The EVQ_RPTR table and RX_INDIRECTION_TBL can (or must?) be written
as dwords even though they have a step size of 16 bytes, unlike
most other CSRs.
- In general, a read of any width is valid for registers, so long as
it does not cross register boundaries. There is also no latching
behaviour in the BIU, contrary to rumour.
We write to the EVQ_RPTR table with efx_writed_table() but never read
it back as it's write-only. We write to the RX_INDIRECTION_TBL with
efx_writed_table(), but only read it back for the register dump, where
we use efx_reado_table() as for any other table with step size of 16.
We read MC_TREG_SMEM with efx_readd_table() for the register dump, but
normally read and write it with efx_readd() and efx_writed() using
offsets calculated in bytes.
Since these functions are trivial and have few callers, it's clearer
to open-code them at the call sites. While we're at it, update the
comments on the BIU behaviour again.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Tue, 11 Sep 2012 17:25:13 +0000 (18:25 +0100)]
sfc: Fix check for failure of MC_CMD_FLUSH_RX_QUEUES
efx_mcdi_rpc_start() returns a negative value on error or zero on
success. However one caller that can't properly handle failure then
does WARN_ON(rc > 0). Change it to WARN_ON(rc < 0).
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Thu, 6 Sep 2012 15:52:31 +0000 (16:52 +0100)]
sfc: Really disable flow control while flushing
Receiving pause frames can block TX queue flushes. Earlier changes
work around this by reconfiguring the MAC during flushes for VFs, but
during flushes for the PF we would only change the fc_disable counter.
Unless the MAC is reconfigured for some other reason during the flush
(which I would not expect to happen) this had no effect at all.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Ben Hutchings [Thu, 6 Sep 2012 01:11:04 +0000 (02:11 +0100)]
sfc: Fix byte order warnings for ethtool RX filter interface
sparse has got a bit more picky since I last ran it over this. Add
forced casts for use of ~0 as a big-endian value. Undo the pointless
optimisation of parameter validation with '|'; using '||' avoids these
warnings.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Eric Dumazet [Fri, 30 Nov 2012 09:49:27 +0000 (09:49 +0000)]
net: move inet_dport/inet_num in sock_common
commit 68835aba4d9b (net: optimize INET input path further)
moved some fields used for tcp/udp sockets lookup in the first cache
line of struct sock_common.
This patch moves inet_dport/inet_num as well, filling a 32bit hole
on 64 bit arches and reducing number of cache line misses in lookups.
Also change INET_MATCH()/INET_TW_MATCH() to perform the ports match
before addresses match, as this check is more discriminant.
Remove the hash check from MATCH() macros because we dont need to
re validate the hash value after taking a refcount on socket, and
use likely/unlikely compiler hints, as the sk_hash/hash check
makes the following conditional tests 100% predicted by cpu.
Introduce skc_addrpair/skc_portpair pair values to better
document the alignment requirements of the port/addr pairs
used in the various MATCH() macros, and remove some casts.
The namespace check can also be done at last.
This slightly improves TCP/UDP lookup times.
IP/TCP early demux needs inet->rx_dst_ifindex and
TCP needs inet->min_ttl, lets group them together in same cache line.
With help from Ben Hutchings & Joe Perches.
Idea of this patch came after Ling Ma proposal to move skc_hash
to the beginning of struct sock_common, and should allow him
to submit a final version of his patch. My tests show an improvement
doing so.
Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Cc: Joe Perches <joe@perches.com> Cc: Ling Ma <ling.ma.program@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Haiyang Zhang [Fri, 30 Nov 2012 09:23:41 +0000 (09:23 +0000)]
hyperv: Add an error message to rndis_filter_set_device_mac()
This message indicates an error returned from the host when changing MAC address.
Reported-by: Michal Kubecek <mkubecek@suse.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Gallatin [Fri, 30 Nov 2012 08:31:59 +0000 (08:31 +0000)]
myri10ge: Add vlan rx for better GRO perf.
Unlike LRO, GRO requires that vlan tags be removed before
aggregation can occur. Since the myri10ge NIC does not support
hardware vlan tag offload, we must remove the tag in the driver
to achieve performance comparable to LRO for vlan tagged frames.
Thanks to Eric Duzamet for his help simplifying the original patch.
Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Gallatin [Fri, 30 Nov 2012 08:31:58 +0000 (08:31 +0000)]
myri10ge: Convert from LRO to GRO
Convert myri10ge from LRO to GRO, and simplify the driver by removing
various LRO-related code which is no longer needed including
ndo_fix_features op, custom skb building from frags, and LRO
header parsing.
Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Slaby [Fri, 30 Nov 2012 07:05:40 +0000 (07:05 +0000)]
MAINTAINERS: fix bouncing tun/tap entries
Delivery to the following recipient failed permanently:
vtun@office.satix.net
Technical details of permanent failure:
DNS Error: Domain name not found
Of course:
$ host office.satix.net
Host office.satix.net not found: 3(NXDOMAIN)
===========
And "Change of Email Address Notification":
Old Address New Address Email Subject
------------------------------------------------------
maxk@qualcomm.com maxk@qti.qualcomm.com "tuntap: multiqueue...
Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Maxim Krasnyansky <maxk@qti.qualcomm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
These macros, while reducing the amount of code, hide flow control
and make the code more confusing to follow and review. This patch
expands them. It should have no functional effect on the driver.
Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes a bug introduced in bbd9f9e which could prevent
some wakeups from working correctly if multiple wol options were
selected.
This helper function calculates a 16-bit crc and shifts it into
either the high or low 16 bits of a u32 so the caller can or it
directly into place. The function previously had a u16 return
type so would always have returned zero when filter was odd.
Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net> Reported-by: Bjorn Mork <bjorn@mork.no> Cc: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
smsc95xx: fix error handling in suspend failure case
This patch ensures that if we fail to suspend the LAN9500 device
we call usbnet_resume before returning failure, instead of
leaving the usbnet driver in an unusable state.
Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes a buffer overflow introduced by bbd9f9e, where
the filter_mask array is accessed beyond its bounds.
Updated to also add a check for kzalloc failure, as reported by
Bjorn Mork and Joe Perches.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net> Cc: Bjorn Mork <bjorn@mork.no> Cc: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
These macros, while reducing the amount of code, hide flow control
and make the code more confusing to follow and review. This patch
expands them. It should have no functional effect on the driver.
Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Thomas Graf [Fri, 30 Nov 2012 02:16:27 +0000 (02:16 +0000)]
sctp: verify length provided in heartbeat information parameter
If the variable parameter length provided in the mandatory
heartbeat information parameter exceeds the calculated payload
length the packet has been corrupted. Reply with a parameter
length protocol violation message.
Signed-off-by: Thomas Graf <tgraf@suug.ch> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Rami Rosen [Fri, 30 Nov 2012 01:08:47 +0000 (01:08 +0000)]
rtnelink: remove unused parameter from rtnl_create_link().
This patch removes an unused parameter (src_net) from rtnl_create_link()
method and from the method single invocation, in veth.
This parameter was used in the past when calling
ops->get_tx_queues(src_net, tb) in rtnl_create_link().
The get_tx_queues() member of rtnl_link_ops was replaced by two methods,
get_num_tx_queues() and get_num_rx_queues(), which do not get any
parameter. This was done in commit d40156aa5ecbd51fed932ed4813df82b56e5ff4d by
Jiri Pirko ("rtnl: allow to specify different num for rx and tx queue count").
Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alan Ott [Thu, 29 Nov 2012 15:55:44 +0000 (15:55 +0000)]
6lowpan: consider checksum bytes in fragmentation threshold
Change the threshold for framentation of a lowpan packet from
using the MTU size to now use the MTU size minus the checksum length,
which is added by the hardware. For IEEE 802.15.4, this effectively
changes it from 127 bytes to 125 bytes.
Signed-off-by: Alan Ott <alan@signal11.us> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 30 Nov 2012 17:12:05 +0000 (12:12 -0500)]
Merge branch 'for-davem' of git://gitorious.org/linux-can/linux-can-next
Marc Kleine-Budde says:
====================
this pull request is for net-next/master. There is a patch by Alexander
Stein fixing a reference counter problem which can make driver
unloading impossible (stable Cc'ed). And several patches by me which
remove an obsolete mechanism from several drivers, which is already
handled at the infrastructure level.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Akinobu Mita [Thu, 29 Nov 2012 01:27:45 +0000 (01:27 +0000)]
mISDN: improve bitops usage
This improves bitops usages in several points:
- Convert u64 to a proper bitmap declaration. This enables to remove
superfluous typecasting from 'u64' to 'unsigned long *'.
- Convert superfluous atomic bitops to non atomic bitops. The bitmap
is allocated on the stack and it is not accessed by any other threads,
so using atomic bitops is not necessary.
- Use find_next_zero_bit and find_next_zero_bit instead of calling
test_bit() for each bit.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
Yi Zou [Wed, 28 Nov 2012 13:45:24 +0000 (13:45 +0000)]
8021q: fix vlan device to inherit the unicast filtering capability flag
This bug is observed on running FCoE over a VLAN device associated w/
a real device that has IFF_UNICAST_FLT set since FCoE would add unicast
address such as FLOGI MAC to the VLAN interface that FCoE is on. Since
currently, VLAN device is not inheriting the IFF_UNICAST_FLT flag from the
parent real device even though the real device is capable of doing unicast
filtering. This forces the VLAN device and its real device go to promiscuous
mode unnecessarily even the added address is actually being added to the
available unicast filter table in real device.
Signed-off-by: Yi Zou <yi.zou@intel.com> Cc: devel@open-fcoe.org Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Bohac [Wed, 28 Nov 2012 04:42:14 +0000 (04:42 +0000)]
bonding: delete migrated IP addresses from the rlb hash table
Bonding in balance-alb mode records information from ARP packets
passing through the bond in a hash table (rx_hashtbl).
At certain situations (e.g. link change of a slave),
rlb_update_rx_clients() will send out ARP packets to update ARP
caches of other hosts on the network to achieve RX load
balancing.
The problem is that once an IP address is recorded in the hash
table, it stays there indefinitely. If this IP address is
migrated to a different host in the network, bonding still sends
out ARP packets that poison other systems' ARP caches with
invalid information.
This patch solves this by looking at all incoming ARP packets,
and checking if the source IP address is one of the source
addresses stored in the rx_hashtbl. If it is, but the MAC
addresses differ, the corresponding hash table entries are
removed. Thus, when an IP address is migrated, the first ARP
broadcast by its new owner will purge the offending entries of
rx_hashtbl.
The hash table is hashed by ip_dst. To be able to do the above
check efficiently (not walking the whole hash table), we need a
reverse mapping (by ip_src).
I added three new members in struct rlb_client_info:
rx_hashtbl[x].src_first will point to the start of a list of
entries for which hash(ip_src) == x.
The list is linked with src_next and src_prev.
When an incoming ARP packet arrives at rlb_arp_recv()
rlb_purge_src_ip() can quickly walk only the entries on the
corresponding lists, i.e. the entries that are likely to contain
the offending IP address.
To avoid confusion, I renamed these existing fields of struct
rlb_client_info:
next -> used_next
prev -> used_prev
rx_hashtbl_head -> rx_hashtbl_used_head
(The current linked list is _not_ a list of hash table
entries with colliding ip_dst. It's a list of entries that are
being used; its purpose is to avoid walking the whole hash table
when looking for used entries.)
Signed-off-by: Jiri Bohac <jbohac@suse.cz> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
zheng.li [Tue, 27 Nov 2012 23:57:04 +0000 (23:57 +0000)]
bonding: rlb mode of bond should not alter ARP originating via bridge
Do not modify or load balance ARP packets passing through balance-alb
mode (wherein the ARP did not originate locally, and arrived via a bridge).
Modifying pass-through ARP replies causes an incorrect MAC address
to be placed into the ARP packet, rendering peers unable to communicate
with the actual destination from which the ARP reply originated.
Load balancing pass-through ARP requests causes an entry to be
created for the peer in the rlb table, and bond_alb_monitor will
occasionally issue ARP updates to all peers in the table instrucing them
as to which MAC address they should communicate with; this occurs when
some event sets rx_ntt. In the bridged case, however, the MAC address
used for the update would be the MAC of the slave, not the actual source
MAC of the originating destination. This would render peers unable to
communicate with the destinations beyond the bridge.
Signed-off-by: Zheng Li <zheng.x.li@oracle.com> Cc: Jay Vosburgh <fubar@us.ibm.com> Cc: Andy Gospodarek <andy@greyhouse.net> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 30 Nov 2012 17:01:30 +0000 (12:01 -0500)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch
Conflicts:
net/ipv6/exthdrs_core.c
Jesse Gross says:
====================
This series of improvements for 3.8/net-next contains four components:
* Support for modifying IPv6 headers
* Support for matching and setting skb->mark for better integration with
things like iptables
* Ability to recognize the EtherType for RARP packets
* Two small performance enhancements
The movement of ipv6_find_hdr() into exthdrs_core.c causes two small merge
conflicts. I left it as is but can do the merge if you want. The conflicts
are:
* ipv6_find_hdr() and ipv6_find_tlv() were both moved to the bottom of
exthdrs_core.c. Both should stay.
* A new use of ipv6_find_hdr() was added to net/netfilter/ipvs/ip_vs_core.c
after this patch. The IPVS user has two instances of the old constant
name IP6T_FH_F_FRAG which has been renamed to IP6_FH_F_FRAG.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Mazur [Tue, 6 Nov 2012 22:17:02 +0000 (23:17 +0100)]
pppoatm: do not inline pppoatm_may_send()
The pppoatm_may_send() is quite heavy and it's called three times
in pppoatm_send() and inlining costs more than 200 bytes of code
(more than 10% of total pppoatm driver code size).
add/remove: 1/0 grow/shrink: 0/1 up/down: 132/-367 (-235)
function old new delta
pppoatm_may_send - 132 +132
pppoatm_send 900 533 -367
Signed-off-by: Krzysztof Mazur <krzysiek@podlesie.net> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
projects / linux-beck.git / log