net: introduce and use skb_frag_fill_page_desc()

Most users use __skb_frag_set_page()/skb_frag_off_set()/
skb_frag_size_set() to fill the page desc for a skb frag.

Introduce skb_frag_fill_page_desc

net: introduce and use skb_frag_fill_page_desc()

Most users use __skb_frag_set_page()/skb_frag_off_set()/
skb_frag_size_set() to fill the page desc for a skb frag.

Introduce skb_frag_fill_page_desc() to do that.

net/bpf/test_run.c does not call skb_frag_off_set() to
set the offset, "copy_from_user(page_address(page), ...)"
and 'shinfo' being part of the 'data' kzalloced in
bpf_test_init() suggest that it is assuming offset to be
initialized as zero, so call skb_frag_fill_page_desc()
with offset being zero for this case.

Also, skb_frag_set_page() is not used anymore, so remove
it.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

net: cxgb3: remove unused fl_to_qset function

clang with W=1 reports
drivers/net/ethernet/chelsio/cxgb3/sge.c:169:32: error: unused function
'fl_to_qset' [-Werror,-Wunused-function]
static inline

net: cxgb3: remove unused fl_to_qset function

clang with W=1 reports
drivers/net/ethernet/chelsio/cxgb3/sge.c:169:32: error: unused function
'fl_to_qset' [-Werror,-Wunused-function]
static inline struct sge_qset *fl_to_qset(const struct sge_fl *q, int qidx)
^
This function is not used, so remove it.

Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Link: https://lore.kernel.org/r/20230319172433.1708161-1-trix@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

show more ...

net: cxgb3: fix typos in kernel doc

Fix two trivial typos of 'pakcet' in cxgb3 kernel doc.

Signed-off-by: Jean Sacren <sakiwit@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

cxgb3: Use struct_group() for memcpy() region

In preparation for FORTIFY_SOURCE performing compile-time and run-time
field bounds checking for memcpy(), memmove(), and memset(), avoid
intentionally

cxgb3: Use struct_group() for memcpy() region

In preparation for FORTIFY_SOURCE performing compile-time and run-time
field bounds checking for memcpy(), memmove(), and memset(), avoid
intentionally writing across neighboring fields.

Use struct_group() in struct rss_hdr around members imm_data and intr_gen,
so they can be referenced together. This will allow memcpy() and sizeof()
to more easily reason about sizes, improve readability, and avoid future
warnings about writing beyond the end of imm_data.

"pahole" shows no size nor member offset changes to struct rss_hdr.
"objdump -d" shows no object code changes.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

cxgb3: fix oops on module removal

When removing the driver module w/o bringing an interface up before
the error below occurs. Reason seems to be that cancel_work_sync() is
called in t3_sge_stop() fo

cxgb3: fix oops on module removal

When removing the driver module w/o bringing an interface up before
the error below occurs. Reason seems to be that cancel_work_sync() is
called in t3_sge_stop() for a queue that hasn't been initialized yet.

[10085.941785] ------------[ cut here ]------------
[10085.941799] WARNING: CPU: 1 PID: 5850 at kernel/workqueue.c:3074 __flush_work+0x3ff/0x480
[10085.941819] Modules linked in: vfat snd_hda_codec_hdmi fat snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio led_class ee1004 iTCO_
wdt intel_tcc_cooling x86_pkg_temp_thermal coretemp aesni_intel crypto_simd cryptd snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core r
8169 snd_pcm realtek mdio_devres snd_timer snd i2c_i801 i2c_smbus libphy i915 i2c_algo_bit cxgb3(-) intel_gtt ttm mdio drm_kms_helper mei_me s
yscopyarea sysfillrect sysimgblt mei fb_sys_fops acpi_pad sch_fq_codel crypto_user drm efivarfs ext4 mbcache jbd2 crc32c_intel
[10085.941944] CPU: 1 PID: 5850 Comm: rmmod Not tainted 5.14.0-rc7-next-20210826+ #6
[10085.941974] Hardware name: System manufacturer System Product Name/PRIME H310I-PLUS, BIOS 2603 10/21/2019
[10085.941992] RIP: 0010:__flush_work+0x3ff/0x480
[10085.942003] Code: c0 74 6b 65 ff 0d d1 bd 78 75 e8 bc 2f 06 00 48 c7 c6 68 b1 88 8a 48 c7 c7 e0 5f b4 8b 45 31 ff e8 e6 66 04 00 e9 4b fe ff ff <0f> 0b 45 31 ff e9 41 fe ff ff e8 72 c1 79 00 85 c0 74 87 80 3d 22
[10085.942036] RSP: 0018:ffffa1744383fc08 EFLAGS: 00010246
[10085.942048] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000923
[10085.942062] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff91c901710a88
[10085.942076] RBP: ffffa1744383fce8 R08: 0000000000000001 R09: 0000000000000001
[10085.942090] R10: 00000000000000c2 R11: 0000000000000000 R12: ffff91c901710a88
[10085.942104] R13: 0000000000000000 R14: ffff91c909a96100 R15: 0000000000000001
[10085.942118] FS: 00007fe417837740(0000) GS:ffff91c969d00000(0000) knlGS:0000000000000000
[10085.942134] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10085.942146] CR2: 000055a8d567ecd8 CR3: 0000000121690003 CR4: 00000000003706e0
[10085.942160] Call Trace:
[10085.942166] ? __lock_acquire+0x3af/0x22e0
[10085.942177] ? cancel_work_sync+0xb/0x10
[10085.942187] __cancel_work_timer+0x128/0x1b0
[10085.942197] ? __pm_runtime_resume+0x5b/0x90
[10085.942208] cancel_work_sync+0xb/0x10
[10085.942217] t3_sge_stop+0x2f/0x50 [cxgb3]
[10085.942234] remove_one+0x26/0x190 [cxgb3]
[10085.942248] pci_device_remove+0x39/0xa0
[10085.942258] __device_release_driver+0x15e/0x240
[10085.942269] driver_detach+0xd9/0x120
[10085.942278] bus_remove_driver+0x53/0xd0
[10085.942288] driver_unregister+0x2c/0x50
[10085.942298] pci_unregister_driver+0x31/0x90
[10085.942307] cxgb3_cleanup_module+0x10/0x18c [cxgb3]
[10085.942324] __do_sys_delete_module+0x191/0x250
[10085.942336] ? syscall_enter_from_user_mode+0x21/0x60
[10085.942347] ? trace_hardirqs_on+0x2a/0xe0
[10085.942357] __x64_sys_delete_module+0x13/0x20
[10085.942368] do_syscall_64+0x40/0x90
[10085.942377] entry_SYSCALL_64_after_hwframe+0x44/0xae
[10085.942389] RIP: 0033:0x7fe41796323b

Fixes: 5e0b8928927f ("net:cxgb3: replace tasklets with works")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

net: chelsio: switch from 'pci_' to 'dma_' API

The wrappers in include/linux/pci-dma-compat.h should go away.

The patch has been generated with the coccinelle script below.

It has been hand modifi

net: chelsio: switch from 'pci_' to 'dma_' API

The wrappers in include/linux/pci-dma-compat.h should go away.

The patch has been generated with the coccinelle script below.

It has been hand modified to use 'dma_set_mask_and_coherent()' instead of
'pci_set_dma_mask()/pci_set_consistent_dma_mask()' when applicable.
This is less verbose.

It has been compile tested.

@@
@@
- PCI_DMA_BIDIRECTIONAL
+ DMA_BIDIRECTIONAL

@@
@@
- PCI_DMA_TODEVICE
+ DMA_TO_DEVICE

@@
@@
- PCI_DMA_FROMDEVICE
+ DMA_FROM_DEVICE

@@
@@
- PCI_DMA_NONE
+ DMA_NONE

@@
expression e1, e2, e3;
@@
- pci_alloc_consistent(e1, e2, e3)
+ dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3;
@@
- pci_zalloc_consistent(e1, e2, e3)
+ dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3, e4;
@@
- pci_free_consistent(e1, e2, e3, e4)
+ dma_free_coherent(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
- pci_map_single(e1, e2, e3, e4)
+ dma_map_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
- pci_unmap_single(e1, e2, e3, e4)
+ dma_unmap_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4, e5;
@@
- pci_map_page(e1, e2, e3, e4, e5)
+ dma_map_page(&e1->dev, e2, e3, e4, e5)

@@
expression e1, e2, e3, e4;
@@
- pci_unmap_page(e1, e2, e3, e4)
+ dma_unmap_page(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
- pci_map_sg(e1, e2, e3, e4)
+ dma_map_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
- pci_unmap_sg(e1, e2, e3, e4)
+ dma_unmap_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
- pci_dma_sync_single_for_cpu(e1, e2, e3, e4)
+ dma_sync_single_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
- pci_dma_sync_single_for_device(e1, e2, e3, e4)
+ dma_sync_single_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
- pci_dma_sync_sg_for_cpu(e1, e2, e3, e4)
+ dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
- pci_dma_sync_sg_for_device(e1, e2, e3, e4)
+ dma_sync_sg_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2;
@@
- pci_dma_mapping_error(e1, e2)
+ dma_mapping_error(&e1->dev, e2)

@@
expression e1, e2;
@@
- pci_set_dma_mask(e1, e2)
+ dma_set_mask(&e1->dev, e2)

@@
expression e1, e2;
@@
- pci_set_consistent_dma_mask(e1, e2)
+ dma_set_coherent_mask(&e1->dev, e2)

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

net:cxgb3: fix incorrect work cancellation

In my last changes in commit 5e0b8928927f I introduced a copy-paste bug,
leading to cancel twice qresume_task work for OFLD queue, and never the
one for CT

net:cxgb3: fix incorrect work cancellation

In my last changes in commit 5e0b8928927f I introduced a copy-paste bug,
leading to cancel twice qresume_task work for OFLD queue, and never the
one for CTRL queue. This patch cancels correctly both works.

Signed-off-by: Íñigo Huguet <ihuguet@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

net:cxgb3: replace tasklets with works

OFLD and CTRL TX queues can be stopped if there is no room in
their DMA rings. If this happens, they're tried to be restarted
later after having made some room

net:cxgb3: replace tasklets with works

OFLD and CTRL TX queues can be stopped if there is no room in
their DMA rings. If this happens, they're tried to be restarted
later after having made some room in the corresponding ring.

The tasks of restarting these queues were triggered using
tasklets, but they can be replaced for workqueue works, getting
them out of softirq context.

This queues stop/restart probably doesn't happen often and they
can be quite lengthy because they try to send all pending skbs.
Moreover, given that probably the ring is not empty yet, so the
DMA still has work to do, we don't need to be so fast to justify
using tasklets/softirq instead of running in a thread.

Signed-off-by: Íñigo Huguet <ihuguet@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

net: chelsio: remove leading spaces before tabs

There are a few leading spaces before tabs and remove it by running the
following commard:

$ find . -name '*.c' | xargs sed -r -i 's/^[ ]+\t/\t/'
$

net: chelsio: remove leading spaces before tabs

There are a few leading spaces before tabs and remove it by running the
following commard:

$ find . -name '*.c' | xargs sed -r -i 's/^[ ]+\t/\t/'
$ find . -name '*.h' | xargs sed -r -i 's/^[ ]+\t/\t/'

Cc: Rohit Maheshwari <rohitm@chelsio.com>
Signed-off-by: Hui Tang <tanghui20@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

net: chelsio: cxgb3: Fix wrong function name in comments

Fixes the following W=1 kernel build warning(s):

drivers/net/ethernet/chelsio/cxgb3/sge.c:677: warning: expecting prototype for free_qset()

net: chelsio: cxgb3: Fix wrong function name in comments

Fixes the following W=1 kernel build warning(s):

drivers/net/ethernet/chelsio/cxgb3/sge.c:677: warning: expecting prototype for free_qset(). Prototype was for t3_free_qset() instead
drivers/net/ethernet/chelsio/cxgb3/sge.c:1266: warning: expecting prototype for eth_xmit(). Prototype was for t3_eth_xmit() instead

Cc: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Yang Shen <shenyang39@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

cxgb3: fix error return code in t3_sge_alloc_qset()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: b1fb1f280d09 ("cxgb3 -

cxgb3: fix error return code in t3_sge_alloc_qset()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: b1fb1f280d09 ("cxgb3 - Fix dma mapping error path")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Acked-by: Raju Rangoju <rajur@chelsio.com>
Link: https://lore.kernel.org/r/1606902965-1646-1-git-send-email-zhangchangzhong@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

show more ...

net: cxgb3: Cleanup in_interrupt() usage

t3_sge_stop() is called from task context and from error handlers in
interrupt context. It relies on in_interrupt() to differentiate the
contexts.

in_interr

net: cxgb3: Cleanup in_interrupt() usage

t3_sge_stop() is called from task context and from error handlers in
interrupt context. It relies on in_interrupt() to differentiate the
contexts.

in_interrupt() is deprecated as it is ill defined and does not provide what
it suggests.

Instead of replacing it with some other construct, simply split the
function into t3_sge_stop_dma(), which can be called from any context, and
t3_sge_stop() which can be only called from task context.

This has the advantage that any bogus invocation of t3_sge_stop() from
wrong contexts can be caught by debug kernels instead of being papered over
by the conditional.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

drivers/net/ethernet: clean up mis-targeted comments

As part of the W=1 cleanups for ethernet, a million [*] driver
comments had to be cleaned up to get the W=1 compilation to
succeed. This change f

drivers/net/ethernet: clean up mis-targeted comments

As part of the W=1 cleanups for ethernet, a million [*] driver
comments had to be cleaned up to get the W=1 compilation to
succeed. This change finally makes the drivers/net/ethernet tree
compile with W=1 set on the command line. NOTE: The kernel uses
kdoc style (see Documentation/process/kernel-doc.rst) when
documenting code, not doxygen or other styles.

After this patch the x86_64 build has no warnings from W=1, however
scripts/kernel-doc says there are 1545 more warnings in source files, that
I need to develop a script to fix in a followup patch.

The errors fixed here are all kdoc of a few classes, with a few outliers:
In file included from drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c:10:
drivers/net/ethernet/qlogic/netxen/netxen_nic.h:1193:18: warning: ‘FW_DUMP_LEVELS’ defined but not used [-Wunused-const-variable=]
1193 | static const u32 FW_DUMP_LEVELS[] = { 0x3, 0x7, 0xf, 0x1f, 0x3f, 0x7f, 0xff };
| ^~~~~~~~~~~~~~
... repeats 4 times...
drivers/net/ethernet/sun/cassini.c:2084:24: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body]
2084 | RX_USED_ADD(page, i);
drivers/net/ethernet/natsemi/ns83820.c: In function ‘phy_intr’:
drivers/net/ethernet/natsemi/ns83820.c:603:6: warning: variable ‘tbisr’ set but not used [-Wunused-but-set-variable]
603 | u32 tbisr, tanar, tanlpar;
| ^~~~~
drivers/net/ethernet/natsemi/ns83820.c: In function ‘ns83820_get_link_ksettings’:
drivers/net/ethernet/natsemi/ns83820.c:1207:11: warning: variable ‘tanar’ set but not used [-Wunused-but-set-variable]
1207 | u32 cfg, tanar, tbicr;
| ^~~~~
drivers/net/ethernet/packetengines/yellowfin.c:1063:18: warning: variable ‘yf_size’ set but not used [-Wunused-but-set-variable]
1063 | int data_size, yf_size;
| ^~~~~~~

Normal kdoc fixes:
warning: Function parameter or member 'x' not described in 'y'
warning: Excess function parameter 'x' description in 'y'
warning: Cannot understand <string> on line <NNN> - I thought it was a doc line

[*] - ok it wasn't quite a million, but it felt like it.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

chelsio: convert tasklets to use new tasklet_setup() API

In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup(

chelsio: convert tasklets to use new tasklet_setup() API

In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.

Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

net: Take common prefetch code structure into a function

Many device drivers use the same prefetch code structure to
deal with small L1 cacheline size.
Take this code into a function and call it fro

net: Take common prefetch code structure into a function

Many device drivers use the same prefetch code structure to
deal with small L1 cacheline size.
Take this code into a function and call it from the drivers.

Suggested-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

net: Use skb_frag_off accessors

Use accessor functions for skb fragment's page_offset instead
of direct references, in preparation for bvec conversion.

Signed-off-by: Jonathan Lemon <jonathan.lemon

net: Use skb_frag_off accessors

Use accessor functions for skb fragment's page_offset instead
of direct references, in preparation for bvec conversion.

Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

net: Use skb accessors in network drivers

In preparation for unifying the skb_frag and bio_vec, use the fine
accessors which already exist and use skb_frag_t instead of
struct skb_frag_struct.

Sign

net: Use skb accessors in network drivers

In preparation for unifying the skb_frag and bio_vec, use the fine
accessors which already exist and use skb_frag_t instead of
struct skb_frag_struct.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

net: cxgb3: fix various indentation issues

There are handful of lines that have indentation issues, fix these.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Mille

net: cxgb3: fix various indentation issues

There are handful of lines that have indentation issues, fix these.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

cross-tree: phase out dma_zalloc_coherent()

We already need to zero out memory for dma_alloc_coherent(), as such
using dma_zalloc_coherent() is superflous. Phase it out.

This change was generated w

cross-tree: phase out dma_zalloc_coherent()

We already need to zero out memory for dma_alloc_coherent(), as such
using dma_zalloc_coherent() is superflous. Phase it out.

This change was generated with the following Coccinelle SmPL patch:

@ replace_dma_zalloc_coherent @
expression dev, size, data, handle, flags;
@@

-dma_zalloc_coherent(dev, size, handle, flags)
+dma_alloc_coherent(dev, size, handle, flags)

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
[hch: re-ran the script on the latest tree]
Signed-off-by: Christoph Hellwig <hch@lst.de>

show more ...

net: chelsio: Use zeroing memory allocator instead of allocator/memset

Use dma_zalloc_coherent for allocating zeroed
memory and remove unnecessary memset function.

Signed-off-by: YueHaibing <yuehai

net: chelsio: Use zeroing memory allocator instead of allocator/memset

Use dma_zalloc_coherent for allocating zeroed
memory and remove unnecessary memset function.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

cxgb3: Check and handle the dma mapping errors

This patch adds checks at approprate places whether *dma_map*() call has
succeeded or not.

Original Work by: Santosh Rastapur <santosh@chelsio.com>
Si

cxgb3: Check and handle the dma mapping errors

This patch adds checks at approprate places whether *dma_map*() call has
succeeded or not.

Original Work by: Santosh Rastapur <santosh@chelsio.com>
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

drivers/net: chelsio/cxgb*: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup()

drivers/net: chelsio/cxgb*: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Santosh Raspatur <santosh@chelsio.com>
Cc: Ganesh Goudar <ganeshgr@chelsio.com>
Cc: Casey Leedom <leedom@chelsio.com>
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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net: introduce __skb_put_[zero, data, u8]

follow Johannes Berg, semantic patch file as below,
@@
identifier p, p2;
expression len;
expression skb;
type t, t2;
@@
(
-p = __skb_put(skb, len);
+p = __s

net: introduce __skb_put_[zero, data, u8]

follow Johannes Berg, semantic patch file as below,
@@
identifier p, p2;
expression len;
expression skb;
type t, t2;
@@
(
-p = __skb_put(skb, len);
+p = __skb_put_zero(skb, len);
|
-p = (t)__skb_put(skb, len);
+p = __skb_put_zero(skb, len);
)
... when != p
(
p2 = (t2)p;
-memset(p2, 0, len);
|
-memset(p, 0, len);
)

@@
identifier p;
expression len;
expression skb;
type t;
@@
(
-t p = __skb_put(skb, len);
+t p = __skb_put_zero(skb, len);
)
... when != p
(
-memset(p, 0, len);
)

@@
type t, t2;
identifier p, p2;
expression skb;
@@
t *p;
...
(
-p = __skb_put(skb, sizeof(t));
+p = __skb_put_zero(skb, sizeof(t));
|
-p = (t *)__skb_put(skb, sizeof(t));
+p = __skb_put_zero(skb, sizeof(t));
)
... when != p
(
p2 = (t2)p;
-memset(p2, 0, sizeof(*p));
|
-memset(p, 0, sizeof(*p));
)

@@
expression skb, len;
@@
-memset(__skb_put(skb, len), 0, len);
+__skb_put_zero(skb, len);

@@
expression skb, len, data;
@@
-memcpy(__skb_put(skb, len), data, len);
+__skb_put_data(skb, data, len);

@@
expression SKB, C, S;
typedef u8;
identifier fn = {__skb_put};
fresh identifier fn2 = fn ## "_u8";
@@
- *(u8 *)fn(SKB, S) = C;
+ fn2(SKB, C);

Signed-off-by: yuan linyu <Linyu.Yuan@alcatel-sbell.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

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drivers: net: generalize napi_complete_done()

napi_complete_done() allows to opt-in for gro_flush_timeout,
added back in linux-3.19, commit 3b47d30396ba
("net: gro: add a per device gro flush timer"

drivers: net: generalize napi_complete_done()

napi_complete_done() allows to opt-in for gro_flush_timeout,
added back in linux-3.19, commit 3b47d30396ba
("net: gro: add a per device gro flush timer")

This allows for more efficient GRO aggregation without
sacrifying latencies.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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cxgb3/4/4vf: Update drivers to use dma_rmb/wmb where appropriate

Update the Chelsio Ethernet drivers to use the dma_rmb/wmb calls instead of
the full barriers in order to improve performance.

Cc: S

cxgb3/4/4vf: Update drivers to use dma_rmb/wmb where appropriate

Update the Chelsio Ethernet drivers to use the dma_rmb/wmb calls instead of
the full barriers in order to improve performance.

Cc: Santosh Raspatur <santosh@chelsio.com>
Cc: Hariprasad S <hariprasad@chelsio.com>
Cc: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...