17 Dec, 2011
1 commit
-
Use IS_ENABLED(CONFIG_FOO)
instead of defined(CONFIG_FOO) || defined (CONFIG_FOO_MODULE)Signed-off-by: Igor Maravić
Signed-off-by: David S. Miller
05 Dec, 2011
1 commit
-
We discovered that TCP stack could retransmit misaligned skbs if a
malicious peer acknowledged sub MSS frame. This currently can happen
only if output interface is non SG enabled : If SG is enabled, tcp
builds headless skbs (all payload is included in fragments), so the tcp
trimming process only removes parts of skb fragments, header stay
aligned.Some arches cant handle misalignments, so force a head reallocation and
shrink headroom to MAX_TCP_HEADER.Dont care about misaligments on x86 and PPC (or other arches setting
NET_IP_ALIGN to 0)This patch introduces __pskb_copy() which can specify the headroom of
new head, and pskb_copy() becomes a wrapper on top of __pskb_copy()Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
27 Nov, 2011
1 commit
-
Conflicts:
net/ipv4/inet_diag.c
23 Nov, 2011
1 commit
-
when skb_shift, we want to shift paged data from skb to tgt frag area.
Original comments revert the shift orderSigned-off-by: Feng King
Signed-off-by: David S. Miller
18 Nov, 2011
1 commit
-
…wireless-next into for-davem
Conflicts:
include/net/bluetooth/bluetooth.h
17 Nov, 2011
1 commit
-
v2: add couple missing conversions in drivers
split unexporting netdev_fix_features()
implemented %pNF
convert sock::sk_route_(no?)capsSigned-off-by: Michał Mirosław
Signed-off-by: David S. Miller
15 Nov, 2011
1 commit
-
One of the thing we discussed during netdev 2011 conference was the idea
to change some network drivers to allocate/populate their skb at RX
completion time, right before feeding the skb to network stack.In old days, we allocated skbs when populating the RX ring.
This means bringing into cpu cache sk_buff and skb_shared_info cache
lines (since we clear/initialize them), then 'queue' skb->data to NIC.By the time NIC fills a frame in skb->data buffer and host can process
it, cpu probably threw away the cache lines from its caches, because lot
of things happened between the allocation and final use.So the deal would be to allocate only the data buffer for the NIC to
populate its RX ring buffer. And use build_skb() at RX completion to
attach a data buffer (now filled with an ethernet frame) to a new skb,
initialize the skb_shared_info portion, and give the hot skb to network
stack.build_skb() is the function to allocate an skb, caller providing the
data buffer that should be attached to it. Drivers are expected to call
skb_reserve() right after build_skb() to adjust skb->data to the
Ethernet frame (usually skipping NET_SKB_PAD and NET_IP_ALIGN, but some
drivers might add a hardware provided alignment)Data provided to build_skb() MUST have been allocated by a prior
kmalloc() call, with enough room to add SKB_DATA_ALIGN(sizeof(struct
skb_shared_info)) bytes at the end of the data without corrupting
incoming frame.data = kmalloc(NET_SKB_PAD + NET_IP_ALIGN + 1536 +
SKB_DATA_ALIGN(sizeof(struct skb_shared_info)),
GFP_ATOMIC);
...
skb = build_skb(data);
if (!skb) {
recycle_data(data);
} else {
skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
...
}Signed-off-by: Eric Dumazet
CC: Eilon Greenstein
CC: Ben Hutchings
CC: Tom Herbert
CC: Jamal Hadi Salim
CC: Stephen Hemminger
CC: Thomas Graf
CC: Herbert Xu
CC: Jeff Kirsher
Signed-off-by: David S. Miller
10 Nov, 2011
1 commit
-
The 802.1X EAPOL handshake hostapd does requires
knowing whether the frame was ack'ed by the peer.
Currently, we fudge this pretty badly by not even
transmitting the frame as a normal data frame but
injecting it with radiotap and getting the status
out of radiotap monitor as well. This is rather
complex, confuses users (mon.wlan0 presence) and
doesn't work with all hardware.To get rid of that hack, introduce a real wifi TX
status option for data frame transmissions.This works similar to the existing TX timestamping
in that it reflects the SKB back to the socket's
error queue with a SCM_WIFI_STATUS cmsg that has
an int indicating ACK status (0/1).Since it is possible that at some point we will
want to have TX timestamping and wifi status in a
single errqueue SKB (there's little point in not
doing that), redefine SO_EE_ORIGIN_TIMESTAMPING
to SO_EE_ORIGIN_TXSTATUS which can collect more
than just the timestamp; keep the old constant
as an alias of course. Currently the internal APIs
don't make that possible, but it wouldn't be hard
to split them up in a way that makes it possible.Thanks to Neil Horman for helping me figure out
the functions that add the control messages.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
04 Nov, 2011
1 commit
-
Commit 87fb4b7b533073eeeaed0b6bf7c2328995f6c075 (net: more
accurate skb truesize) changed the alignment of size. This
can cause problems at least on some machines with NFS root:Unhandled fault: alignment exception (0x801) at 0xc183a43a
Internal error: : 801 [#1] PREEMPT
Modules linked in:
CPU: 0 Not tainted (3.1.0-08784-g5eeee4a #733)
pc : [] lr : [] psr: 60000013
sp : c180fef8 ip : 00000000 fp : c181f580
r10: 00000000 r9 : c044b28c r8 : 00000001
r7 : c183a3a0 r6 : c1835be0 r5 : c183a412 r4 : 000001f2
r3 : 00000000 r2 : 00000000 r1 : ffffffe6 r0 : c183a43a
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: 0005317f Table: 10004000 DAC: 00000017
Process swapper (pid: 1, stack limit = 0xc180e270)
Stack: (0xc180fef8 to 0xc1810000)
fee0: 00000024 00000000
ff00: 00000000 c183b9c0 c183b8e0 c044b28c c0507ccc c019dfc4 c180ff2c c0503cf8
ff20: c180ff4c c180ff4c 00000000 c1835420 c182c740 c18349c0 c05233c0 00000000
ff40: 00000000 c00e6bb8 c180e000 00000000 c04dd82c c0507e7c c050cc18 c183b9c0
ff60: c05233c0 00000000 00000000 c01f34f4 c0430d70 c019d364 c04dd898 c04dd898
ff80: c04dd82c c0507e7c c180e000 00000000 c04c584c c01f4918 c04dd898 c04dd82c
ffa0: c04ddd28 c180e000 00000000 c0008758 c181fa60 3231d82c 00000037 00000000
ffc0: 00000000 c04dd898 c04dd82c c04ddd28 00000013 00000000 00000000 00000000
ffe0: 00000000 c04b2224 00000000 c04b21a0 c001056c c001056c 00000000 00000000
Function entered at [] from []
Function entered at [] from []
Function entered at [] from []
Function entered at [] from []
Function entered at [] from []
Function entered at [] from []
Code: e1a00005 e3a01028 ebfa7cb0 e35a0000 (e5858028)Here PC is at __alloc_skb and &shinfo->dataref is unaligned because
skb->end can be unaligned without this patch.As explained by Eric Dumazet , this happens
only with SLOB, and not with SLAB or SLUB:* Eric Dumazet [111102 15:56]:
>
> Your patch is absolutely needed, I completely forgot about SLOB :(
>
> since, kmalloc(386) on SLOB gives exactly ksize=386 bytes, not nearest
> power of two.
>
> [ 60.305763] malloc(size=385)->ffff880112c11e38 ksize=386 -> nsize=2
> [ 60.305921] malloc(size=385)->ffff88007c92ce28 ksize=386 -> nsize=2
> [ 60.306898] malloc(size=656)->ffff88007c44ad28 ksize=656 -> nsize=272
> [ 60.325385] malloc(size=656)->ffff88007c575868 ksize=656 -> nsize=272
> [ 60.325531] malloc(size=656)->ffff88011c777230 ksize=656 -> nsize=272
> [ 60.325701] malloc(size=656)->ffff880114011008 ksize=656 -> nsize=272
> [ 60.346716] malloc(size=385)->ffff880114142008 ksize=386 -> nsize=2
> [ 60.346900] malloc(size=385)->ffff88011c777690 ksize=386 -> nsize=2Signed-off-by: Tony Lindgren
Acked-by: Eric Dumazet
Signed-off-by: David S. Miller
21 Oct, 2011
1 commit
-
I've split this bit out of the skb frag destructor patch since it helps enforce
the use of the fragment API.Signed-off-by: Ian Campbell
Signed-off-by: David S. Miller
20 Oct, 2011
1 commit
-
skb_recycle_check resets the skb if it's eligible for recycling.
However, there are times when a driver might want to optionally
manipulate the skb data with the skb before resetting the skb,
but after it has determined eligibility. We do this by splitting the
eligibility check from the skb reset, creating two inline functions to
accomplish that task.Signed-off-by: Andy Fleming
Acked-by: David Daney
Signed-off-by: David S. Miller
19 Oct, 2011
1 commit
-
To ease skb->truesize sanitization, its better to be able to localize
all references to skb frags size.Define accessors : skb_frag_size() to fetch frag size, and
skb_frag_size_{set|add|sub}() to manipulate it.Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
14 Oct, 2011
1 commit
-
skb truesize currently accounts for sk_buff struct and part of skb head.
kmalloc() roundings are also ignored.Considering that skb_shared_info is larger than sk_buff, its time to
take it into account for better memory accounting.This patch introduces SKB_TRUESIZE(X) macro to centralize various
assumptions into a single place.At skb alloc phase, we put skb_shared_info struct at the exact end of
skb head, to allow a better use of memory (lowering number of
reallocations), since kmalloc() gives us power-of-two memory blocks.Unless SLUB/SLUB debug is active, both skb->head and skb_shared_info are
aligned to cache lines, as before.Note: This patch might trigger performance regressions because of
misconfigured protocol stacks, hitting per socket or global memory
limits that were previously not reached. But its a necessary step for a
more accurate memory accounting.Signed-off-by: Eric Dumazet
CC: Andi Kleen
CC: Ben Hutchings
Signed-off-by: David S. Miller
22 Sep, 2011
1 commit
-
Conflicts:
MAINTAINERS
drivers/net/Kconfig
drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
drivers/net/ethernet/broadcom/tg3.c
drivers/net/wireless/iwlwifi/iwl-pci.c
drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c
drivers/net/wireless/rt2x00/rt2800usb.c
drivers/net/wireless/wl12xx/main.c
16 Sep, 2011
1 commit
-
dev_forward_skb loops an skb back into host networking
stack which might hang on the memory indefinitely.
In particular, this can happen in macvtap in bridged mode.
Copy the userspace fragments to avoid blocking the
sender in that case.As this patch makes skb_copy_ubufs extern now,
I also added some documentation and made it clear
the SKBTX_DEV_ZEROCOPY flag automatically instead
of doing it in all callers. This can be made into a separate
patch if people feel it's worth it.Signed-off-by: Michael S. Tsirkin
Signed-off-by: David S. Miller
25 Aug, 2011
1 commit
-
Signed-off-by: Ian Campbell
Cc: "David S. Miller"
Cc: Eric Dumazet
Cc: "Michał Mirosław"
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller
21 Aug, 2011
1 commit
-
Signed-off-by: Changli Gao
Signed-off-by: David S. Miller
18 Aug, 2011
1 commit
-
The l4_rxhash flag was added to the skb structure to indicate
that the rxhash value was computed over the 4 tuple for the
packet which includes the port information in the encapsulated
transport packet. This is used by the stack to preserve the
rxhash value in __skb_rx_tunnel.Signed-off-by: Tom Herbert
Signed-off-by: David S. Miller
02 Aug, 2011
1 commit
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Since skb_copy_bits() is called from assembly, add a fat comment to make
clear we should think twice before changing its prototype.Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
22 Jul, 2011
1 commit
-
There are two problems:
1) "n" was allocated with alloc_skb() so we should free it with
kfree_skb() instead of regular kfree().
2) We return the freed pointer instead of NULL.Signed-off-by: Dan Carpenter
Reviewed-by: Eric Dumazet
Signed-off-by: David S. Miller
09 Jul, 2011
1 commit
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This patch clears tx zero-copy flag as needed.
Signed-off-by: Shirley Ma
Signed-off-by: David S. Miller
07 Jul, 2011
1 commit
-
This patch adds userspace buffers support in skb shared info. A new
struct skb_ubuf_info is needed to maintain the userspace buffers
argument and index, a callback is used to notify userspace to release
the buffers once lower device has done DMA (Last reference to that skb
has gone).If there is any userspace apps to reference these userspace buffers,
then these userspaces buffers will be copied into kernel. This way we
can prevent userspace apps from holding these userspace buffers too long.Use destructor_arg to point to the userspace buffer info; a new tx flags
SKBTX_DEV_ZEROCOPY is added for zero-copy buffer check.Signed-off-by: Shirley Ma
Signed-off-by: David S. Miller
21 May, 2011
2 commits
-
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1446 commits)
macvlan: fix panic if lowerdev in a bond
tg3: Add braces around 5906 workaround.
tg3: Fix NETIF_F_LOOPBACK error
macvlan: remove one synchronize_rcu() call
networking: NET_CLS_ROUTE4 depends on INET
irda: Fix error propagation in ircomm_lmp_connect_response()
irda: Kill set but unused variable 'bytes' in irlan_check_command_param()
irda: Kill set but unused variable 'clen' in ircomm_connect_indication()
rxrpc: Fix set but unused variable 'usage' in rxrpc_get_transport()
be2net: Kill set but unused variable 'req' in lancer_fw_download()
irda: Kill set but unused vars 'saddr' and 'daddr' in irlan_provider_connect_indication()
atl1c: atl1c_resume() is only used when CONFIG_PM_SLEEP is defined.
rxrpc: Fix set but unused variable 'usage' in rxrpc_get_peer().
rxrpc: Kill set but unused variable 'local' in rxrpc_UDP_error_handler()
rxrpc: Kill set but unused variable 'sp' in rxrpc_process_connection()
rxrpc: Kill set but unused variable 'sp' in rxrpc_rotate_tx_window()
pkt_sched: Kill set but unused variable 'protocol' in tc_classify()
isdn: capi: Use pr_debug() instead of ifdefs.
tg3: Update version to 3.119
tg3: Apply rx_discards fix to 5719/5720
...Fix up trivial conflicts in arch/x86/Kconfig and net/mac80211/agg-tx.c
as per Davem. -
Commit e66eed651fd1 ("list: remove prefetching from regular list
iterators") removed the include of prefetch.h from list.h, which
uncovered several cases that had apparently relied on that rather
obscure header file dependency.So this fixes things up a bit, using
grep -L linux/prefetch.h $(git grep -l '[^a-z_]prefetchw*(' -- '*.[ch]')
grep -L 'prefetchw*(' $(git grep -l 'linux/prefetch.h' -- '*.[ch]')to guide us in finding files that either need
inclusion, or have it despite not needing it.There are more of them around (mostly network drivers), but this gets
many core ones.Reported-by: Stephen Rothwell
Signed-off-by: Linus Torvalds
18 May, 2011
1 commit
-
Commit 7fee226ad239 (add a noref bit on skb dst) forgot to use
skb_dst_force() on packets queued in sk_error_queueThis triggers following warning, for applications using IP_CMSG_PKTINFO
receiving one error status------------[ cut here ]------------
WARNING: at include/linux/skbuff.h:457 ip_cmsg_recv_pktinfo+0xa6/0xb0()
Hardware name: 2669UYD
Modules linked in: isofs vboxnetadp vboxnetflt nfsd ebtable_nat ebtables
lib80211_crypt_ccmp uinput xcbc hdaps tp_smapi thinkpad_ec radeonfb fb_ddc
radeon ttm drm_kms_helper drm ipw2200 intel_agp intel_gtt libipw i2c_algo_bit
i2c_i801 agpgart rng_core cfbfillrect cfbcopyarea cfbimgblt video raid10 raid1
raid0 linear md_mod vboxdrv
Pid: 4697, comm: miredo Not tainted 2.6.39-rc6-00569-g5895198-dirty #22
Call Trace:
[] ? printk+0x1d/0x1f
[] warn_slowpath_common+0x72/0xa0
[] ? ip_cmsg_recv_pktinfo+0xa6/0xb0
[] ? ip_cmsg_recv_pktinfo+0xa6/0xb0
[] warn_slowpath_null+0x20/0x30
[] ip_cmsg_recv_pktinfo+0xa6/0xb0
[] ip_cmsg_recv+0x127/0x260
[] ? skb_dequeue+0x4d/0x70
[] ? skb_copy_datagram_iovec+0x53/0x300
[] ? sub_preempt_count+0x24/0x50
[] ip_recv_error+0x23d/0x270
[] udp_recvmsg+0x264/0x2b0
[] inet_recvmsg+0xd9/0x130
[] sock_recvmsg+0xf2/0x120
[] ? might_fault+0x4b/0xa0
[] ? verify_iovec+0x4c/0xc0
[] ? sock_recvmsg_nosec+0x100/0x100
[] __sys_recvmsg+0x114/0x1e0
[] ? __lock_acquire+0x365/0x780
[] ? fget_light+0xa6/0x3e0
[] ? fget_light+0xbf/0x3e0
[] ? fget_light+0x2e/0x3e0
[] sys_recvmsg+0x39/0x60Close bug https://bugzilla.kernel.org/show_bug.cgi?id=34622
Reported-by: Witold Baryluk
Signed-off-by: Eric Dumazet
CC: Stephen Hemminger
Signed-off-by: David S. Miller
31 Mar, 2011
1 commit
-
Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi
17 Mar, 2011
1 commit
-
This patch allows rx_handlers to better signalize what to do next to
it's caller. That makes skb->deliver_no_wcard no longer needed.kernel-doc for rx_handler_result is taken from Nicolas' patch.
Signed-off-by: Jiri Pirko
Reviewed-by: Nicolas de Pesloüan
Signed-off-by: David S. Miller
02 Mar, 2011
1 commit
-
UFO doesn't really use the sk_sndmsg_* parameters so touching
them is pointless. It can't use them anyway since the whole
point of UFO is to use the original pages without copying.Signed-off-by: Herbert Xu
Acked-by: Eric Dumazet
Signed-off-by: David S. Miller
28 Jan, 2011
2 commits
-
pskb_expand_head() triggers a kmemcheck warning when copy of
skb_shared_info is done in pskb_expand_head()This is because destructor_arg field is not necessarily initialized at
this point. Add kmemcheck_annotate_variable() call in __alloc_skb() to
instruct kmemcheck this is a normal situation.Resolves bugzilla.kernel.org 27212
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=27212
Reported-by: Christian Casteyde
Signed-off-by: Eric Dumazet
CC: Andrew Morton
Signed-off-by: David S. Miller
27 Jan, 2011
1 commit
25 Jan, 2011
2 commits
-
Quoting Ben Hutchings: we presumably won't be defining features that
can only be enabled on 64-bit architectures.Occurences found by `grep -r` on net/, drivers/net, include/
[ Move features and vlan_features next to each other in
struct netdev, as per Eric Dumazet's suggestion -DaveM ]Signed-off-by: Michał Mirosław
Signed-off-by: David S. Miller -
Suppose that several linear skbs of the same flow were received by GRO. They
were thus merged into one skb with a frag_list. Then a new skb of the same flow
arrives, but it is a paged skb with data starting in its frags[].Before adding the skb to the frag_list skb_gro_receive() will of course adjust
the skb to throw away the headers. It correctly modifies the page_offset and
size of the frag, but it leaves incorrect information in the skb:
->data_len is not decreased at all.
->len is decreased only by headlen, as if no change were done to the frag.
Later in a receiving process this causes skb_copy_datagram_iovec() to return
-EFAULT and this is seen in userspace as the result of the recv() syscall.In practice the bug can be reproduced with the sfc driver. By default the
driver uses an adaptive scheme when it switches between using
napi_gro_receive() (with skbs) and napi_gro_frags() (with pages). The bug is
reproduced when under rx load with enough successful GRO merging the driver
decides to switch from the former to the latter.Manual control is also possible, so reproducing this is easy with netcat:
- on machine1 (with sfc): nc -l 12345 > /dev/null
- on machine2: nc machine1 12345 < /dev/zero
- on machine1:
echo 1 > /sys/module/sfc/parameters/rx_alloc_method # use skbs
echo 2 > /sys/module/sfc/parameters/rx_alloc_method # use pages
- See that nc has quit suddenly.[v2: Modified by Eric Dumazet to avoid advancing skb->data past the end
and to use a temporary variable.]Signed-off-by: Michal Schmidt
Acked-by: Eric Dumazet
Signed-off-by: David S. Miller
13 Jan, 2011
1 commit
-
The IPv6 tproxy patches split IPv6 defragmentation off of conntrack, but
failed to update the #ifdef stanzas guarding the defragmentation related
fields and code in skbuff and conntrack related code in nf_defrag_ipv6.c.This patch adds the required #ifdefs so that IPv6 tproxy can truly be used
without connection tracking.Original report:
http://marc.info/?l=linux-netdev&m=129010118516341&w=2Reported-by: Randy Dunlap
Acked-by: Randy Dunlap
Signed-off-by: KOVACS Krisztian
Signed-off-by: Pablo Neira Ayuso
17 Dec, 2010
1 commit
-
Replace skb->csum_start - skb_headroom(skb) with skb_checksum_start_offset().
Note for usb/smsc95xx: skb->data - skb->head == skb_headroom(skb).
Signed-off-by: Michał Mirosław
Signed-off-by: David S. Miller
04 Dec, 2010
1 commit
-
skb head being allocated by kmalloc(), it might be larger than what
actually requested because of discrete kmem caches sizes. Before
reallocating a new skb head, check if the current one has the needed
extra size.Do this check only if skb head is not shared.
Signed-off-by: Changli Gao
Cc: Eric Dumazet
Acked-by: Eric Dumazet
Signed-off-by: David S. Miller
24 Oct, 2010
1 commit
-
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1699 commits)
bnx2/bnx2x: Unsupported Ethtool operations should return -EINVAL.
vlan: Calling vlan_hwaccel_do_receive() is always valid.
tproxy: use the interface primary IP address as a default value for --on-ip
tproxy: added IPv6 support to the socket match
cxgb3: function namespace cleanup
tproxy: added IPv6 support to the TPROXY target
tproxy: added IPv6 socket lookup function to nf_tproxy_core
be2net: Changes to use only priority codes allowed by f/w
tproxy: allow non-local binds of IPv6 sockets if IP_TRANSPARENT is enabled
tproxy: added tproxy sockopt interface in the IPV6 layer
tproxy: added udp6_lib_lookup function
tproxy: added const specifiers to udp lookup functions
tproxy: split off ipv6 defragmentation to a separate module
l2tp: small cleanup
nf_nat: restrict ICMP translation for embedded header
can: mcp251x: fix generation of error frames
can: mcp251x: fix endless loop in interrupt handler if CANINTF_MERRF is set
can-raw: add msg_flags to distinguish local traffic
9p: client code cleanup
rds: make local functions/variables static
...Fix up conflicts in net/core/dev.c, drivers/net/pcmcia/smc91c92_cs.c and
drivers/net/wireless/ath/ath9k/debug.c as per David
17 Oct, 2010
1 commit
-
commit b30973f877 (node-aware skb allocation) spread a wrong habit of
allocating net drivers skbs on a given memory node : The one closest to
the NIC hardware. This is wrong because as soon as we try to scale
network stack, we need to use many cpus to handle traffic and hit
slub/slab management on cross-node allocations/frees when these cpus
have to alloc/free skbs bound to a central node.skb allocated in RX path are ephemeral, they have a very short
lifetime : Extra cost to maintain NUMA affinity is too expensive. What
appeared as a nice idea four years ago is in fact a bad one.In 2010, NIC hardwares are multiqueue, or we use RPS to spread the load,
and two 10Gb NIC might deliver more than 28 million packets per second,
needing all the available cpus.Cost of cross-node handling in network and vm stacks outperforms the
small benefit hardware had when doing its DMA transfert in its 'local'
memory node at RX time. Even trying to differentiate the two allocations
done for one skb (the sk_buff on local node, the data part on NIC
hardware node) is not enough to bring good performance.Signed-off-by: Eric Dumazet
Acked-by: Tom Herbert
Signed-off-by: David S. Miller
15 Sep, 2010
1 commit
-
…stedt/linux-2.6-trace into perf/core
10 Sep, 2010
1 commit
-
Conflicts:
net/mac80211/main.c