Commit 1b151e2435fc ("block: Remove special-casing of compound
pages") caused a change in behaviour when releasing the pages
if the buffer does not start at the beginning of the page. This
was because the calculation of the number of pages to release
was incorrect.
This was fixed by commit
ncdevmem is a devmem TCP netcat. It works similarly to netcat, but it
sends and receives data using the devmem TCP APIs. It uses udmabuf as
the dmabuf provider. It is compatible with a regular netcat running on
a peer, or a ncdevmem running on a peer.
In addition to normal netcat support,
Add documentation outlining the usage and details of devmem TCP.
Signed-off-by: Mina Almasry
Reviewed-by: Bagas Sanjaya
---
v9:
https://lore.kernel.org/netdev/20240403002053.2376017-14-almasrym...@google.com/
- Bagas doc suggestions.
v8:
- Applied docs suggestions (Randy). Thanks!
v7:
-
In tcp_recvmsg_locked(), detect if the skb being received by the user
is a devmem skb. In this case - if the user provided the MSG_SOCK_DEVMEM
flag - pass it to tcp_recvmsg_devmem() for custom handling.
tcp_recvmsg_devmem() copies any data in the skb header to the linear
buffer, and returns a
Add an interface for the user to notify the kernel that it is done
reading the devmem dmabuf frags returned as cmsg. The kernel will
drop the reference on the frags to make them available for reuse.
Signed-off-by: Willem de Bruijn
Signed-off-by: Kaiyuan Zhang
Signed-off-by: Mina Almasry
---
For device memory TCP, we expect the skb headers to be available in host
memory for access, and we expect the skb frags to be in device memory
and unaccessible to the host. We expect there to be no mixing and
matching of device memory frags (unaccessible) with host memory frags
(accessible) in the
Implement a memory provider that allocates dmabuf devmem in the form of
net_iov.
The provider receives a reference to the struct netdev_dmabuf_binding
via the pool->mp_priv pointer. The driver needs to set this pointer for
the provider in the net_iov.
The provider obtains a reference on the
Make skb_frag_page() fail in the case where the frag is not backed
by a page, and fix its relevant callers to handle this case.
Signed-off-by: Mina Almasry
---
v10:
- Fixed newly generated kdoc warnings found by patchwork. While we're
at it, fix the Return section of the functions I
Abstrace the memory type from the page_pool so we can later add support
for new memory types. Convert the page_pool to use the new netmem type
abstraction, rather than use struct page directly.
As of this patch the netmem type is a no-op abstraction: it's always a
struct page underneath. All the
Convert netmem to be a union of struct page and struct netmem. Overload
the LSB of struct netmem* to indicate that it's a net_iov, otherwise
it's a page.
Currently these entries in struct page are rented by the page_pool and
used exclusively by the net stack:
struct {
unsigned long
Implement netdev devmem allocator. The allocator takes a given struct
netdev_dmabuf_binding as input and allocates net_iov from that
binding.
The allocation simply delegates to the binding's genpool for the
allocation logic and wraps the returned memory region in a net_iov
struct.
Signed-off-by:
Add a netdev_dmabuf_binding struct which represents the
dma-buf-to-netdevice binding. The netlink API will bind the dma-buf to
rx queues on the netdevice. On the binding, the dma_buf_attach
& dma_buf_map_attachment will occur. The entries in the sg_table from
mapping will be inserted into a
API takes the dma-buf fd as input, and binds it to the netdevice. The
user can specify the rx queues to bind the dma-buf to.
Suggested-by: Stanislav Fomichev
Signed-off-by: Mina Almasry
---
v7:
- Use flags: [ admin-perm ] instead of a CAP_NET_ADMIN check.
Changes in v1:
- Add rx-queue-type
Add netdev_rx_queue_restart() function to netdev_rx_queue.h
Signed-off-by: David Wei
Signed-off-by: Mina Almasry
---
v11:
- Fix not checking dev->queue_mgmt_ops (Pavel).
- Fix ndo_queue_mem_free call that passed the wrong pointer (David).
v9:
v11: https://patchwork.kernel.org/project/netdevbpf/list/?series=857457=*
Major Changes:
--
v11 addresses feedback received in v10. The major change is the removal
of the memory provider ops as requested by Christoph. We still
accomplish the same thing, but utilizing direct
Hi Babu,
On 6/6/24 4:09 PM, Moger, Babu wrote:
Hi Reinette,
On 6/6/2024 3:33 PM, Reinette Chatre wrote:
Hi Babu,
On 6/5/24 2:36 PM, Babu Moger wrote:
The selftest noncont_cat_run_test fails on AMD with the warnings. Reason
is, AMD supports non contiguous CBM masks but does not report it
Hi Reinette,
On 6/6/2024 3:33 PM, Reinette Chatre wrote:
Hi Babu,
On 6/5/24 2:36 PM, Babu Moger wrote:
The selftest noncont_cat_run_test fails on AMD with the warnings. Reason
is, AMD supports non contiguous CBM masks but does not report it via
CPUID.
Update noncont_cat_run_test to check
On 6/6/24 03:57, Laura Nao wrote:
Hi Shuah,
On 5/6/24 13:13, Laura Nao wrote:
The watchdog selftest script supports various parameters for testing
different IOCTLs. The watchdog ping functionality is validated by
starting
a loop where the watchdog device is periodically pet, which can only
be
On 6/3/24 05:54, Amer Al Shanawany wrote:
seccomp_benchmark.c:197:24: warning: zero-length gnu_printf format
string [-Wformat-zero-length]
197 | ksft_print_msg("");
|^~
seccomp_benchmark.c:202:24: warning: zero-length gnu_printf format
string
On Thu, Apr 11, 2024 at 8:24 AM Xu Kuohai wrote:
>
> From: Xu Kuohai
>
> Add macro LSM_RET_INT to annotate lsm hook return integer type and the
> default return value, and the expected return range.
>
> The LSM_RET_INT is declared as:
>
> LSM_RET_INT(defval, min, max)
>
> where
>
> - defval is
This patch addresses the present TODO in the file.
I have tested it manually on my system and added relevant filtering to
ensure that the correct feature list is being checked.
Signed-off-by: Abhinav Jain
---
tools/testing/selftests/net/netdevice.sh | 21 +++--
1 file changed,
Hello:
This series was applied to bpf/bpf-next.git (master)
by Daniel Borkmann :
On Thu, 30 May 2024 15:41:07 +0800 you wrote:
> From: Geliang Tang
>
> For moving dctcp test dedicated code out of do_test() into test_dctcp().
> This patchset adds a new helper start_test() in bpf_tcp_ca.c to
On 06.06.24 22:36, Pankaj Raghav (Samsung) wrote:
From: Pankaj Raghav
create_pagecache_thp_and_fd() in split_huge_page_test.c used the
variable dummy to perform mmap read.
However, this test was skipped even on XFS which has large folio
support. The issue was compiler (gcc 13.2.0) was
On 6 Jun 2024, at 13:36, Pankaj Raghav (Samsung) wrote:
> From: Pankaj Raghav
>
> create_pagecache_thp_and_fd() in split_huge_page_test.c used the
> variable dummy to perform mmap read.
>
> However, this test was skipped even on XFS which has large folio
> support. The issue was compiler (gcc
From: Pankaj Raghav
create_pagecache_thp_and_fd() in split_huge_page_test.c used the
variable dummy to perform mmap read.
However, this test was skipped even on XFS which has large folio
support. The issue was compiler (gcc 13.2.0) was optimizing out the
dummy variable, therefore, not creating
Hi Babu,
On 6/5/24 2:36 PM, Babu Moger wrote:
The selftest noncont_cat_run_test fails on AMD with the warnings. Reason
is, AMD supports non contiguous CBM masks but does not report it via CPUID.
Update noncont_cat_run_test to check for the vendor when verifying CPUID.
Fixes: ae638551ab64
On Thu, Jun 06, 2024 at 10:21:51PM +0200, David Hildenbrand wrote:
> On 06.06.24 22:18, Pankaj Raghav (Samsung) wrote:
> > On Thu, Jun 06, 2024 at 05:57:21PM +0200, David Hildenbrand wrote:
> > > On 06.06.24 17:56, David Hildenbrand wrote:
> > > > On 06.06.24 15:58, Pankaj Raghav (Samsung) wrote:
On 06.06.24 22:18, Pankaj Raghav (Samsung) wrote:
On Thu, Jun 06, 2024 at 05:57:21PM +0200, David Hildenbrand wrote:
On 06.06.24 17:56, David Hildenbrand wrote:
On 06.06.24 15:58, Pankaj Raghav (Samsung) wrote:
From: Pankaj Raghav
create_pagecache_thp_and_fd() in split_huge_page_test.c used
On Thu, Jun 06, 2024 at 05:57:21PM +0200, David Hildenbrand wrote:
> On 06.06.24 17:56, David Hildenbrand wrote:
> > On 06.06.24 15:58, Pankaj Raghav (Samsung) wrote:
> > > From: Pankaj Raghav
> > >
> > > create_pagecache_thp_and_fd() in split_huge_page_test.c used the
> > > variable dummy to
On Thu, 2024-06-06 at 09:53 -0400, Ryan Sullivan wrote:
> Define a maximum allowable number of pids that can be livepatched in
> test-syscall.sh as with extremely large machines the output from a
> large number of processes overflows the dev/kmsg "expect" buffer in
> the "check_result" function
On Thu, Jun 6, 2024 at 9:54 AM Ryan Sullivan wrote:
>
> Define a maximum allowable number of pids that can be livepatched in
> test-syscall.sh as with extremely large machines the output from a
> large number of processes overflows the dev/kmsg "expect" buffer in
> the "check_result" function and
From: Mickaël Salaün
Replace a wrong EXPECT_GT(self->child_pid_exited, 0) with EXPECT_GE(),
which will be actually tested on the parent and child sides with a
following commit.
Cc: Shuah Khan
Reviewed-by: Kees Cook
Reviewed-by: Christian Brauner
Link:
Hi,
Just a couple of nits below:
On 6/3/24 7:05 PM, Yuanchu Xie wrote:
> Add workingset reporting documentation for better discoverability of
> its sysfs and memcg interfaces. Also document the required kernel
> config to enable workingset reporting.
>
> Signed-off-by: Yuanchu Xie
> ---
>
On Thu, Jun 6, 2024 at 9:49 AM Mina Almasry wrote:
>
> On Tue, Jun 4, 2024 at 3:46 AM Paolo Abeni wrote:
> >
> > On Thu, 2024-05-30 at 20:16 +, Mina Almasry wrote:
> > > diff --git a/net/core/gro.c b/net/core/gro.c
> > > index 26f09c3e830b7..7b9d018f552bd 100644
> > > --- a/net/core/gro.c
>
On Tue, Jun 4, 2024 at 3:46 AM Paolo Abeni wrote:
>
> On Thu, 2024-05-30 at 20:16 +, Mina Almasry wrote:
> > diff --git a/net/core/gro.c b/net/core/gro.c
> > index 26f09c3e830b7..7b9d018f552bd 100644
> > --- a/net/core/gro.c
> > +++ b/net/core/gro.c
> > @@ -422,6 +422,9 @@ static void
On 06.06.24 17:56, David Hildenbrand wrote:
On 06.06.24 15:58, Pankaj Raghav (Samsung) wrote:
From: Pankaj Raghav
create_pagecache_thp_and_fd() in split_huge_page_test.c used the
variable dummy to perform mmap read.
However, this test was skipped even on XFS which has large folio
support.
On 06.06.24 15:58, Pankaj Raghav (Samsung) wrote:
From: Pankaj Raghav
create_pagecache_thp_and_fd() in split_huge_page_test.c used the
variable dummy to perform mmap read.
However, this test was skipped even on XFS which has large folio
support. The issue was compiler (gcc 13.2.0) was
On 6 Jun 2024, at 8:44, Pankaj Raghav (Samsung) wrote:
> From: Pankaj Raghav
>
> create_pagecache_thp_and_fd() in split_huge_page_test.c used the
> variable dummy to perform mmap read.
>
> However, this test was skipped even on XFS which has large folio
> support. The issue was compiler (gcc
From: Pankaj Raghav
create_pagecache_thp_and_fd() in split_huge_page_test.c used the
variable dummy to perform mmap read.
However, this test was skipped even on XFS which has large folio
support. The issue was compiler (gcc 13.2.0) was optimizing out the
dummy variable, therefore, not creating
Hello:
This series was applied to netdev/net.git (main)
by Jakub Kicinski :
On Wed, 05 Jun 2024 11:21:15 +0200 you wrote:
> While looking at using 'lib.sh' for the MPTCP selftests [1], we found
> some small issues with 'lib.sh'. Here they are:
>
> - Patch 1: fix 'errexit' (set -e) support with
On Thu, Jun 06, 2024 at 03:35:31PM +0100, Matthew Wilcox wrote:
> On Thu, Jun 06, 2024 at 01:58:35PM +, Pankaj Raghav (Samsung) wrote:
> > +++ b/tools/testing/selftests/mm/split_huge_page_test.c
> > @@ -300,7 +300,7 @@ int create_pagecache_thp_and_fd(const char *testfile,
> > size_t fd_size,
Quoting Rob Herring (2024-06-05 16:47:20)
> On Mon, Jun 03, 2024 at 03:38:02PM -0700, Stephen Boyd wrote:
> > diff --git a/drivers/of/Makefile b/drivers/of/Makefile
> > index 2ae909adde49..abd9c578343b 100644
> > diff --git a/drivers/of/overlay_test.c b/drivers/of/overlay_test.c
> > new file mode
On 6 Jun 2024, at 7:35, Matthew Wilcox wrote:
> On Thu, Jun 06, 2024 at 01:58:35PM +, Pankaj Raghav (Samsung) wrote:
>> +++ b/tools/testing/selftests/mm/split_huge_page_test.c
>> @@ -300,7 +300,7 @@ int create_pagecache_thp_and_fd(const char *testfile,
>> size_t fd_size, int *fd,
>>
On Thu, Jun 06, 2024 at 01:58:35PM +, Pankaj Raghav (Samsung) wrote:
> +++ b/tools/testing/selftests/mm/split_huge_page_test.c
> @@ -300,7 +300,7 @@ int create_pagecache_thp_and_fd(const char *testfile,
> size_t fd_size, int *fd,
> char **addr)
> {
> size_t i;
> - int
On 6 Jun 2024, at 6:58, Pankaj Raghav (Samsung) wrote:
> From: Pankaj Raghav
>
> create_pagecache_thp_and_fd() in split_huge_page_test.c used the
> variable dummy to perform mmap read.
>
> However, this test was skipped even on XFS which has large folio
> support. The issue was compiler (gcc
On 6/6/24 18:44, Pankaj Raghav wrote:
+void run_dio_using_hugetlb(unsigned int start_off, unsigned int end_off)
+{
+ int fd;
+ char *buffer = NULL;
+ char *orig_buffer = NULL;
+ size_t h_pagesize = 0;
+ size_t writesize;
+ int free_hpage_b = 0;
+ int
From: Pankaj Raghav
create_pagecache_thp_and_fd() in split_huge_page_test.c used the
variable dummy to perform mmap read.
However, this test was skipped even on XFS which has large folio
support. The issue was compiler (gcc 13.2.0) was optimizing out the
dummy variable, therefore, not creating
Define a maximum allowable number of pids that can be livepatched in
test-syscall.sh as with extremely large machines the output from a
large number of processes overflows the dev/kmsg "expect" buffer in
the "check_result" function and causes a false error.
Reported-by: CKI Project
> +void run_dio_using_hugetlb(unsigned int start_off, unsigned int end_off)
> +{
> + int fd;
> + char *buffer = NULL;
> + char *orig_buffer = NULL;
> + size_t h_pagesize = 0;
> + size_t writesize;
> + int free_hpage_b = 0;
> + int free_hpage_a = 0;
> +
> +
On 6/6/24 3:36 AM, Mark Brown wrote:
> KTAP parsers interpret the output of ksft_test_result_*() as being the
> name of the test. The map_fixed_noreplace test uses a dynamically
> allocated base address for the mmap()s that it tests and currently
> includes this in the test names that it logs so
Hi Shuah,
On 5/6/24 13:13, Laura Nao wrote:
> The watchdog selftest script supports various parameters for testing
> different IOCTLs. The watchdog ping functionality is validated by
> starting
> a loop where the watchdog device is periodically pet, which can only
> be
> stopped by the user
On Mon, Jun 03, 2024 at 03:00:03PM GMT, Aaron Conole wrote:
> Adrian Moreno writes:
>
> > In the action formatting function ("dpstr"), the iteration is made over
> > the nla_map, so if there are more than one attribute from the same type
> > we only print the first one.
> >
> > Fix this by
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