starfive-tech/linux.git/samples/bpf, branch visionfive_v1_5.13

bpf, samples: Fix xdpsock with '-M' parameter missing unload process

2021-07-28T12:37:21+00:00

[ Upstream commit 2620e92ae6ed83260eb46d214554cd308ee35d92 ] Execute the following command and exit, then execute it again, the following error will be reported: $ sudo ./samples/bpf/xdpsock -i ens4f2 -M ^C $ sudo ./samples/bpf/xdpsock -i ens4f2 -M libbpf: elf: skipping unrecognized data section(16) .eh_frame libbpf: elf: skipping relo section(17) .rel.eh_frame for section(16) .eh_frame libbpf: Kernel error message: XDP program already attached ERROR: link set xdp fd failed Commit c9d27c9e8dc7 ("samples: bpf: Do not unload prog within xdpsock") removed the unloading prog code because of the presence of bpf_link. This is fine if XDP_SHARED_UMEM is disabled, but if it is enabled, unloading the prog is still needed. Fixes: c9d27c9e8dc7 ("samples: bpf: Do not unload prog within xdpsock") Signed-off-by: Wang Hai Signed-off-by: Daniel Borkmann Acked-by: Magnus Karlsson Cc: Maciej Fijalkowski Link: https://lore.kernel.org/bpf/20210628091815.2373487-1-wanghai38@huawei.com Signed-off-by: Sasha Levin

samples/bpf: Fix the error return code of xdp_redirect's main()

2021-07-14T15:07:08+00:00

[ Upstream commit 7c6090ee2a7b3315410cfc83a94c3eb057407b25 ] Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. If bpf_map_update_elem() failed, main() should return a negative error. Fixes: 832622e6bd18 ("xdp: sample program for new bpf_redirect helper") Signed-off-by: Wang Hai Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210616042534.315097-1-wanghai38@huawei.com Signed-off-by: Sasha Levin

samples/bpf: Fix Segmentation fault for xdp_redirect command

2021-07-14T15:07:08+00:00

[ Upstream commit 85102ba58b4125ebad941d7555c3c248b23efd16 ] A Segmentation fault error is caused when the following command is executed. $ sudo ./samples/bpf/xdp_redirect lo Segmentation fault This command is missing a device as an argument, resulting in out-of-bounds access from argv. If the number of devices for the xdp_redirect parameter is not 2, we should report an error and exit. Fixes: 24251c264798 ("samples/bpf: add option for native and skb mode for redirect apps") Signed-off-by: Wang Hai Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210616042324.314832-1-wanghai38@huawei.com Signed-off-by: Sasha Levin

samples/bpf: Consider frame size in tx_only of xdpsock sample

2021-05-06T23:19:55+00:00

Fix the tx_only micro-benchmark in xdpsock to take frame size into consideration. It was hardcoded to the default value of frame_size which is 4K. Changing this on the command line to 2K made half of the packets illegal as they were outside the umem and were therefore discarded by the kernel. Fixes: 46738f73ea4f ("samples/bpf: add use of need_wakeup flag in xdpsock") Signed-off-by: Magnus Karlsson Signed-off-by: Daniel Borkmann Acked-by: Maciej Fijalkowski Link: https://lore.kernel.org/bpf/20210506124349.6666-1-magnus.karlsson@gmail.com

samples/bpf: Fix broken tracex1 due to kprobe argument change

2021-04-20T01:19:49+00:00

>From commit c0bbbdc32feb ("__netif_receive_skb_core: pass skb by reference"), the first argument passed into __netif_receive_skb_core has changed to reference of a skb pointer. This commit fixes by using bpf_probe_read_kernel. Signed-off-by: Yaqi Chen Signed-off-by: Alexei Starovoitov Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/20210416154803.37157-1-chendotjs@gmail.com

samples: bpf: Do not unload prog within xdpsock

2021-03-30T16:24:39+00:00

With the introduction of bpf_link in xsk's libbpf part, there's no further need for explicit unload of prog on xdpsock's termination. When process dies, the bpf_link's refcount will be decremented and resources will be unloaded/freed under the hood in case when there are no more active users. While at it, don't dump stats on error path. Signed-off-by: Maciej Fijalkowski Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20210329224316.17793-8-maciej.fijalkowski@intel.com

bpf: Remove unused headers

2021-03-26T05:03:46+00:00

The header is useless in sampleip_kern.c and trace_event_kern.c, remove it. Signed-off-by: Lu Wei Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210324083147.149278-1-luwei32@huawei.com

samples: bpf: Fix a spelling typo in do_hbm_test.sh

2021-03-16T05:17:35+00:00

This patch fixes a spelling typo in do_hbm_test.sh Signed-off-by: Masanari Iida Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210315124454.1744594-1-standby24x7@gmail.com

samples, bpf: Add missing munmap in xdpsock

2021-03-04T14:53:32+00:00

We mmap the umem region, but we never munmap it. Add the missing call at the end of the cleanup. Fixes: 3945b37a975d ("samples/bpf: use hugepages in xdpsock app") Signed-off-by: Maciej Fijalkowski Signed-off-by: Daniel Borkmann Acked-by: Björn Töpel Link: https://lore.kernel.org/bpf/20210303185636.18070-3-maciej.fijalkowski@intel.com

samples: bpf: Remove unneeded semicolon

2021-02-03T05:37:59+00:00

Eliminate the following coccicheck warning: ./samples/bpf/cookie_uid_helper_example.c:316:3-4: Unneeded semicolon Reported-by: Abaci Robot Signed-off-by: Yang Li Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/1612322248-35398-1-git-send-email-yang.lee@linux.alibaba.com