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path: root/tools/bpf/bpftool/prog.c
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2017-10-22tools: bpftool: add `bpftool prog help` as real command i.r.t exit codeQuentin Monnet1-0/+1
Make error messages and return codes more consistent. Specifically, make `bpftool prog help` a real command, instead of printing usage by default for a non-recognized "help" command. Output is the same, but this makes bpftool return with a success value instead of an error. Signed-off-by: Quentin Monnet <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-22tools: bpftool: use err() instead of info() if there are too many insnsQuentin Monnet1-1/+1
Make error messages and return codes more consistent. Specifically, replace the use of info() macro with err() when too many eBPF instructions are received to be dumped, given that bpftool returns with a non-null exit value in that case. Signed-off-by: Quentin Monnet <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-22tools: bpftool: fix return value when all eBPF programs have been shownQuentin Monnet1-1/+3
Change the program to have a more consistent return code. Specifically, do not make bpftool return an error code simply because it reaches the end of the list of the eBPF programs to show. Signed-off-by: Quentin Monnet <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-22tools: bpftool: add pointer to file argument to print_hex()Quentin Monnet1-2/+2
Make print_hex() able to print to any file instead of standard output only, and rename it to fprint_hex(). The function can now be called with the info() macro, for example, without splitting the output between standard and error outputs. Signed-off-by: Quentin Monnet <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-18tools: bpftool: use more common tag formatJakub Kicinski1-1/+1
Program tag is usually displayed as string of bytes without any separators (e.g. as "aa5520b1090cfeb6" vs MAC addr-like format bpftool uses currently: "aa:55:20:b1:09:0c:fe:b6"). Make bptfool use the more common format both for displaying the tag and selecting the program by tag. This was pointed out in review but I misunderstood the comment. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-10tools: bpftool: use the kernel's instruction printerJakub Kicinski1-8/+36
Compile the instruction printer from kernel/bpf and use it for disassembling "translated" eBPF code. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-04tools: bpf: add bpftoolJakub Kicinski1-0/+456
Add a simple tool for querying and updating BPF objects on the system. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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