summaryrefslogtreecommitdiffstats
path: root/samples/bpf/xdp_fwd_user.c
AgeCommit message (Collapse)AuthorFilesLines
2022-06-15samples/bpf: Check detach prog exist or not in xdp_fwdZhengchao Shao1-6/+49
Before detach the prog, we should check detach prog exist or not. Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/20220606005425.261967-1-shaozhengchao@huawei.com
2022-02-03samples/bpf: Get rid of bpf_prog_load_xattr() useAndrii Nakryiko1-6/+9
Remove all the remaining uses of deprecated bpf_prog_load_xattr() API. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20220202225916.3313522-7-andrii@kernel.org
2022-01-20samples/bpf: adapt samples/bpf to bpf_xdp_xxx() APIsAndrii Nakryiko1-2/+2
Use new bpf_xdp_*() APIs across all XDP-related BPF samples. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20220120061422.2710637-5-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2021-12-14samples/bpf: Stop using bpf_object__find_program_by_title API.Kui-Feng Lee1-2/+10
bpf_object__find_program_by_title is going to be deprecated. Replace use cases of bpf_object__find_program_by_title in samples/bpf/ with bpf_object__for_each_program. Signed-off-by: Kui-Feng Lee <kuifeng@fb.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20211214035931.1148209-3-kuifeng@fb.com
2021-06-16samples/bpf: Add missing option to xdp_fwd usageWang Hai1-0/+2
xdp_fwd usage() is missing the introduction of the "-S" and "-F" options, this patch adds it. Fixes: d50ecc46d18f ("samples/bpf: Attach XDP programs in driver mode by default") Signed-off-by: Wang Hai <wanghai38@huawei.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Link: https://lore.kernel.org/bpf/20210615135554.29158-1-wanghai38@huawei.com
2020-01-20samples/bpf: Use consistent include paths for libbpfToke Høiland-Jørgensen1-1/+1
Fix all files in samples/bpf to include libbpf header files with the bpf/ prefix, to be consistent with external users of the library. Also ensure that all includes of exported libbpf header files (those that are exported on 'make install' of the library) use bracketed includes instead of quoted. To make sure no new files are introduced that doesn't include the bpf/ prefix in its include, remove tools/lib/bpf from the include path entirely, and use tools/lib instead. Fixes: 6910d7d3867a ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/157952560911.1683545.8795966751309534150.stgit@toke.dk
2019-12-16samples/bpf: Attach XDP programs in driver mode by defaultToke Høiland-Jørgensen1-3/+14
When attaching XDP programs, userspace can set flags to request the attach mode (generic/SKB mode, driver mode or hw offloaded mode). If no such flags are requested, the kernel will attempt to attach in driver mode, and then silently fall back to SKB mode if this fails. The silent fallback is a major source of user confusion, as users will try to load a program on a device without XDP support, and instead of an error they will get the silent fallback behaviour, not notice, and then wonder why performance is not what they were expecting. In an attempt to combat this, let's switch all the samples to default to explicitly requesting driver-mode attach. As part of this, ensure that all the userspace utilities have a switch to enable SKB mode. For those that have a switch to request driver mode, keep it but turn it into a no-op. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: David Ahern <dsahern@gmail.com> Link: https://lore.kernel.org/bpf/20191216110742.364456-1-toke@redhat.com
2019-08-09samples/bpf: make xdp_fwd more practically usable via devmap lookupJesper Dangaard Brouer1-11/+22
This address the TODO in samples/bpf/xdp_fwd_kern.c, which points out that the chosen egress index should be checked for existence in the devmap. This can now be done via taking advantage of Toke's work in commit 0cdbb4b09a06 ("devmap: Allow map lookups from eBPF"). This change makes xdp_fwd more practically usable, as this allows for a mixed environment, where IP-forwarding fallback to network stack, if the egress device isn't configured to use XDP. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Reviewed-by: David Ahern <dsahern@gmail.com> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-08-09samples/bpf: xdp_fwd rename devmap name to be xdp_tx_portsJesper Dangaard Brouer1-1/+1
The devmap name 'tx_port' came from a copy-paste from xdp_redirect_map which only have a single TX port. Change name to xdp_tx_ports to make it more descriptive. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Reviewed-by: David Ahern <dsahern@gmail.com> Acked-by: Yonghong Song <yhs@fb.com> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-06-18samples: bpf: refactor header include pathDaniel T. Lee1-1/+1
Currently, header inclusion in each file is inconsistent. For example, "libbpf.h" header is included as multiple ways. #include "bpf/libbpf.h" #include "libbpf.h" Due to commit b552d33c80a9 ("samples/bpf: fix include path in Makefile"), $(srctree)/tools/lib/bpf/ path had been included during build, path "bpf/" in header isn't necessary anymore. This commit removes path "bpf/" in header inclusion. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-07-27samples: bpf: convert xdp_fwd_user.c to libbpfJakub Kicinski1-11/+23
Convert xdp_fwd_user.c to use libbpf instead of bpf_load.o. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-14samples: bpf: include bpf/bpf.h instead of local libbpf.hJakub Kicinski1-1/+1
There are two files in the tree called libbpf.h which is becoming problematic. Most samples don't actually need the local libbpf.h they simply include it to get to bpf/bpf.h. Include bpf/bpf.h directly instead. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-05-11samples/bpf: Add example of ipv4 and ipv6 forwarding in XDPDavid Ahern1-0/+136
Simple example of fast-path forwarding. It has a serious flaw in not verifying the egress device index supports XDP forwarding. If the egress device does not packets are dropped. Take this only as a simple example of fast-path forwarding. Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 16:17:12 +0000