On Mon, Nov 28, 2016 at 10:17:23AM +0100, Daniel Borkmann wrote:
> On 11/28/2016 05:32 AM, David Ahern wrote:
> >Build of samples/bpf on debian/jessie fails with:
> >
> > HOSTCC /home/dsa/kernel-3.git/samples/bpf/test_lru_dist.o
> >/home/dsa/kernel-3.git/samples/bpf/test_lru_dist.c: In
On Fri, Oct 12, 2018 at 11:54:42AM -0700, Yonghong Song wrote:
> This patch added interface to load a program with the following
> additional information:
>. prog_btf_fd
>. func_info and func_info_len
> where func_info will provides function range and type_id
> corresponding to each
On Tue, Oct 16, 2018 at 05:32:13PM -0700, Yonghong Song wrote:
>
>
> On 10/15/18 4:12 PM, Martin Lau wrote:
> > On Fri, Oct 12, 2018 at 11:54:42AM -0700, Yonghong Song wrote:
> >> This patch added interface to load a program with the following
> >> additional in
On Wed, Oct 17, 2018 at 10:25:21AM -0700, Yonghong Song wrote:
>
>
> On 10/17/18 9:13 AM, Edward Cree wrote:
> > On 17/10/18 08:23, Yonghong Song wrote:
> >> This patch adds BTF_KIND_FUNC and BTF_KIND_FUNC_PROTO
> >> support to the type section. BTF_KIND_FUNC_PROTO is used
> >> to specify the
On Thu, Oct 18, 2018 at 08:41:52PM +0100, Edward Cree wrote:
> On 18/10/18 19:12, Martin Lau wrote:
> > The BTF verification and bpf_prog_load() has to treat
> > them differently.
> >
> > Are you suggesting they can be treated the same for
> >
On Thu, Oct 18, 2018 at 05:47:11PM +0100, Edward Cree wrote:
> On 17/10/18 18:50, Martin Lau wrote:
> > On Wed, Oct 17, 2018 at 10:25:21AM -0700, Yonghong Song wrote:
> >> What you stated is true, BTF_KIND_FUNC_PROTO corresponds to
> >> dwarf subroutine tag which has
On Thu, Oct 18, 2018 at 04:52:40PM -0700, Joe Stringer wrote:
> On Thu, 18 Oct 2018 at 14:20, Daniel Borkmann wrote:
> >
> > On 10/18/2018 11:06 PM, Joe Stringer wrote:
> > > On Thu, 18 Oct 2018 at 11:54, Nitin Hande wrote:
> > [...]
> > >> Open Issue
> > >> * The underlying code relies on
On Fri, Oct 19, 2018 at 06:04:11PM +0100, Edward Cree wrote:
> On 18/10/18 22:19, Martin Lau wrote:
> > As I have mentioned earlier, it is also special to
> > the kernel because the BTF verifier and bpf_prog_load()
> > need to do different checks for FUNC and FUNC_PROTO to
>
On Fri, Oct 19, 2018 at 12:36:49PM -0700, Martin Lau wrote:
> On Fri, Oct 19, 2018 at 06:04:11PM +0100, Edward Cree wrote:
> > On 18/10/18 22:19, Martin Lau wrote:
> > > As I have mentioned earlier, it is also special to
> > > the kernel because the BTF verifier and
On Fri, Oct 19, 2018 at 10:26:53PM +0100, Edward Cree wrote:
> On 19/10/18 20:36, Martin Lau wrote:
> > On Fri, Oct 19, 2018 at 06:04:11PM +0100, Edward Cree wrote:
> >> But you *do* have such a new section.
> >> The patch comment talks about a 'FuncInfo Table
On Wed, Nov 07, 2018 at 01:36:07PM -0800, Andrey Ignatov wrote:
> Lookup functions in sk_lookup have different expectations about byte
> order of provided arguments.
>
> Specifically __inet_lookup, __udp4_lib_lookup and __udp6_lib_lookup
> expect dport to be in network byte order and do
On Mon, Nov 12, 2018 at 03:29:25PM -0800, Stanislav Fomichev wrote:
> On 11/12, Martin Lau wrote:
> > On Mon, Nov 12, 2018 at 02:10:11PM -0800, Stanislav Fomichev wrote:
> > > On 11/12, Martin Lau wrote:
> > > > On Fri, Nov 09, 2018 at 08:21:41AM -
On Fri, Nov 09, 2018 at 10:18:16AM -0800, Joe Stringer wrote:
> Daniel Borkmann reports:
>
> test_progs.c: In function ‘main’:
> test_progs.c:81:3: warning: ‘duration’ may be used uninitialized in this
> function [-Wmaybe-uninitialized]
>printf("%s:PASS:%s %d nsec\n", __func__, tag,
On Wed, Nov 07, 2018 at 12:29:30PM +, Quentin Monnet wrote:
> The limit for memory locked in the kernel by a process is usually set to
> 64 bytes by default. This can be an issue when creating large BPF maps
hmm... 64 _k_bytes?
> and/or loading many programs. A workaround is to raise this
On Thu, Nov 08, 2018 at 04:11:37PM +0100, Nicolas Dichtel wrote:
> This new mode enables to add or remove an l2 header in a programmatic way
> with cls_bpf.
> For example, it enables to play with mpls headers.
>
> Signed-off-by: Nicolas Dichtel
> ---
> include/uapi/linux/bpf.h | 3 ++
>
On Sun, Nov 11, 2018 at 12:43:27AM +0100, Nicolas Dichtel wrote:
> Le 09/11/2018 à 19:51, Martin Lau a écrit :
> > On Thu, Nov 08, 2018 at 04:11:37PM +0100, Nicolas Dichtel wrote:
> [snip]
> >> +static int bpf_skb_data_shrink(struct sk_buff *skb, u32 len)
> >> +{
>
On Fri, Nov 09, 2018 at 08:21:41AM -0800, Stanislav Fomichev wrote:
[ ... ]
> @@ -1918,23 +2160,20 @@ void *bpf_object__priv(struct bpf_object *obj)
> }
>
> static struct bpf_program *
> -__bpf_program__next(struct bpf_program *prev, struct bpf_object *obj)
> +__bpf_program__iter(struct
On Fri, Nov 09, 2018 at 10:54:01AM -0800, Andrey Ignatov wrote:
> Make bpf_sk_lookup_tcp, bpf_sk_lookup_udp and bpf_sk_release helpers
> available in programs of type BPF_PROG_TYPE_CGROUP_SOCK_ADDR.
>
> Such programs operate on sockets and have access to socket and struct
> sockaddr passed by
On Thu, Nov 08, 2018 at 08:54:25AM -0800, Andrey Ignatov wrote:
> Use bpf_sk_lookup_tcp, bpf_sk_lookup_udp and bpf_sk_release helpers from
> test_sock_addr programs to make sure they're available and can lookup
> and release socket properly for IPv4/IPv4, TCP/UDP.
>
> Reading from a few fields of
On Thu, Nov 08, 2018 at 08:54:23AM -0800, Andrey Ignatov wrote:
> Split bpf_sk_lookup to separate core functionality, that can be reused
> to make socket lookup available to more program types, from
> functionality specific to program types that have access to skb.
>
> Core functionality is
On Thu, Nov 08, 2018 at 08:54:24AM -0800, Andrey Ignatov wrote:
> Make bpf_sk_lookup_tcp, bpf_sk_lookup_udp and bpf_sk_release helpers
> available in programs of type BPF_PROG_TYPE_CGROUP_SOCK_ADDR.
>
> Such programs operate on sockets and have access to socket and struct
> sockaddr passed by
On Mon, Nov 12, 2018 at 02:10:11PM -0800, Stanislav Fomichev wrote:
> On 11/12, Martin Lau wrote:
> > On Fri, Nov 09, 2018 at 08:21:41AM -0800, Stanislav Fomichev wrote:
> > [ ... ]
> > > @@ -1918,23 +2160,20 @@ void *bpf_object__priv(struct bpf_object *obj)
> > >
On Wed, Nov 21, 2018 at 11:22:42AM -0800, Yonghong Song wrote:
> Commit 2993e0515bb4 ("tools/bpf: add support to read .BTF.ext sections")
> added support to read .BTF.ext sections from an object file, create
> and pass prog_btf_fd and func_info to the kernel.
>
> The program btf_fd (prog->btf_fd)
On Wed, Nov 21, 2018 at 02:22:14PM -0800, Alexei Starovoitov wrote:
> On 11/21/18 12:18 PM, Yonghong Song wrote:
> >
> >
> > On 11/21/18 9:40 AM, Andrey Ignatov wrote:
> >> More and more projects use libbpf and one day it'll likely be packaged
> >> and distributed as DSO and that requires ABI
On Sat, Nov 24, 2018 at 11:20:45PM -0800, Yonghong Song wrote:
> The selftest test_btf is changed to test both jit and non-jit.
> The test result should be the same regardless of whether jit
> is enabled or not.
Acked-by: Martin KaFai Lau
On Sat, Nov 24, 2018 at 11:20:44PM -0800, Yonghong Song wrote:
> Commit 838e96904ff3 ("bpf: Introduce bpf_func_info")
> added bpf func info support. The userspace is able
> to get better ksym's for bpf programs with jit, and
> is able to print out func prototypes.
>
> For a program containing
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