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2021-02-02samples: bpf: Remove unneeded semicolonYang Li1-1/+1
Eliminate the following coccicheck warning: ./samples/bpf/cookie_uid_helper_example.c:316:3-4: Unneeded semicolon Reported-by: Abaci Robot <[email protected]> Signed-off-by: Yang Li <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2021-01-14bpf: Rename BPF_XADD and prepare to encode other atomics in .immBrendan Jackman1-4/+4
A subsequent patch will add additional atomic operations. These new operations will use the same opcode field as the existing XADD, with the immediate discriminating different operations. In preparation, rename the instruction mode BPF_ATOMIC and start calling the zero immediate BPF_ADD. This is possible (doesn't break existing valid BPF progs) because the immediate field is currently reserved MBZ and BPF_ADD is zero. All uses are removed from the tree but the BPF_XADD definition is kept around to avoid breaking builds for people including kernel headers. Signed-off-by: Brendan Jackman <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Björn Töpel <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2018-05-14samples: bpf: rename libbpf.h to bpf_insn.hJakub Kicinski1-1/+1
The libbpf.h file in samples is clashing with libbpf's header. Since it only includes a subset of filter.h instruction helpers rename it to bpf_insn.h. Drop the unnecessary include of bpf/bpf.h. Signed-off-by: Jakub Kicinski <[email protected]> Acked-by: Jesper Dangaard Brouer <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-03-28samples/bpf: fix spelling mistake: "revieve" -> "receive"Colin Ian King1-1/+1
Trivial fix to spelling mistake in error message text Signed-off-by: Colin Ian King <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-05-11samples/bpf: run cleanup routines when receiving SIGTERMAndy Gospodarek1-1/+3
Shahid Habib noticed that when xdp1 was killed from a different console the xdp program was not cleaned-up properly in the kernel and it continued to forward traffic. Most of the applications in samples/bpf cleanup properly, but only when getting SIGINT. Since kill defaults to using SIGTERM, add support to cleanup when the application receives either SIGINT or SIGTERM. Signed-off-by: Andy Gospodarek <[email protected]> Reported-by: Shahid Habib <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-05-02bpf, samples: fix build warning in cookie_uid_helper_exampleDaniel Borkmann1-3/+3
Fix the following warnings triggered by 51570a5ab2b7 ("A Sample of using socket cookie and uid for traffic monitoring"): In file included from /home/foo/net-next/samples/bpf/cookie_uid_helper_example.c:54:0: /home/foo/net-next/samples/bpf/cookie_uid_helper_example.c: In function 'prog_load': /home/foo/net-next/samples/bpf/cookie_uid_helper_example.c:119:27: warning: overflow in implicit constant conversion [-Woverflow] -32 + offsetof(struct stats, uid)), ^ /home/foo/net-next/samples/bpf/libbpf.h:135:12: note: in definition of macro 'BPF_STX_MEM' .off = OFF, \ ^ /home/foo/net-next/samples/bpf/cookie_uid_helper_example.c:121:27: warning: overflow in implicit constant conversion [-Woverflow] -32 + offsetof(struct stats, packets), 1), ^ /home/foo/net-next/samples/bpf/libbpf.h:155:12: note: in definition of macro 'BPF_ST_MEM' .off = OFF, \ ^ /home/foo/net-next/samples/bpf/cookie_uid_helper_example.c:129:27: warning: overflow in implicit constant conversion [-Woverflow] -32 + offsetof(struct stats, bytes)), ^ /home/foo/net-next/samples/bpf/libbpf.h:135:12: note: in definition of macro 'BPF_STX_MEM' .off = OFF, \ ^ HOSTLD /home/foo/net-next/samples/bpf/per_socket_stats_example Fixes: 51570a5ab2b7 ("A Sample of using socket cookie and uid for traffic monitoring") Signed-off-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-04-24samples/bpf: add static to function with no prototypeAlexander Alemayhu1-1/+1
Fixes the following warning samples/bpf/cookie_uid_helper_example.c: At top level: samples/bpf/cookie_uid_helper_example.c:276:6: warning: no previous prototype for ‘finish’ [-Wmissing-prototypes] void finish(int ret) ^~~~~~ HOSTLD samples/bpf/per_socket_stats_example Signed-off-by: Alexander Alemayhu <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-04-08Sample program using SO_COOKIEChenbo Feng1-21/+125
Added a per socket traffic monitoring option to illustrate the usage of new getsockopt SO_COOKIE. The program is based on the socket traffic monitoring program using xt_eBPF and in the new option the data entry can be directly accessed using socket cookie. The cookie retrieved allow us to lookup an element in the eBPF for a specific socket. Signed-off-by: Chenbo Feng <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-03-23A Sample of using socket cookie and uid for traffic monitoringChenbo Feng1-0/+217
Add a sample program to demostrate the possible usage of get_socket_cookie and get_socket_uid helper function. The program will store bytes and packets counting of in/out traffic monitored by iptables and store the stats in a bpf map in per socket base. The owner uid of the socket will be stored as part of the data entry. A shell script for running the program is also included. Acked-by: Alexei Starovoitov <[email protected]> Acked-by: Willem de Bruijn <[email protected]> Signed-off-by: Chenbo Feng <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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