diff options
Diffstat (limited to 'man/man8/tc-bpf.8')
| -rw-r--r-- | man/man8/tc-bpf.8 | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/man/man8/tc-bpf.8 b/man/man8/tc-bpf.8 index c8d5c5f9..2e9812ed 100644 --- a/man/man8/tc-bpf.8 +++ b/man/man8/tc-bpf.8 @@ -14,6 +14,10 @@ CLS_NAME ] [ UDS_FILE ] [ .B verbose ] [ +.B skip_hw +| +.B skip_sw +] [ .B police POLICE_SPEC ] [ .B action @@ -71,9 +75,9 @@ In Linux, it's generally considered that eBPF is the successor of cBPF. The kernel internally transforms cBPF expressions into eBPF expressions and executes the latter. Execution of them can be performed in an interpreter or at setup time, they can be just-in-time compiled (JIT'ed) to run as -native machine code. Currently, x86_64, ARM64 and s390 architectures have -eBPF JIT support, whereas PPC, SPARC, ARM and MIPS have cBPF, but did not -(yet) switch to eBPF JIT support. +native machine code. Currently, x86_64, ARM64, s390, ppc64 and sparc64 +architectures have eBPF JIT support, whereas PPC, SPARC, ARM and MIPS have +cBPF, but did not (yet) switch to eBPF JIT support. eBPF's instruction set has similar underlying principles as the cBPF instruction set, it however is modelled closer to the underlying @@ -137,6 +141,16 @@ if set, it will dump the eBPF verifier output, even if loading the eBPF program was successful. By default, only on error, the verifier log is being emitted to the user. +.SS skip_hw | skip_sw +hardware offload control flags. By default TC will try to offload +filters to hardware if possible. +.B skip_hw +explicitly disables the attempt to offload. +.B skip_sw +forces the offload and disables running the eBPF program in the kernel. +If hardware offload is not possible and this flag was set kernel will +report an error and filter will not be installed at all. + .SS police is an optional parameter for an eBPF/cBPF classifier that specifies a police in |