tc: bpf: update list of archs with eBPF support in manpage

Update the list of architectures supporting eBPF JIT as of Linux 4.18.
Also mention the Linux version where support for a particular
architecture was introduced. Finally, reformat the list of architectures
as a bullet list in order to make it more readable.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/man/man8/tc-bpf.8 b/man/man8/tc-bpf.8
index d311f295615b83b25755368e136827ce03d49690..b2f9344f5e281ee3672d382af6006f9ac9d367b2 100644 (file)
--- a/man/man8/tc-bpf.8
+++ b/man/man8/tc-bpf.8
@@ -79,10 +79,39 @@ 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, 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.
-
+native machine code.
+.PP
+Currently, the eBPF JIT compiler is available for the following architectures:
+.IP * 4
+x86_64 (since Linux 3.18)
+.PD 0
+.IP *
+arm64 (since Linux 3.18)
+.IP *
+s390 (since Linux 4.1)
+.IP *
+ppc64 (since Linux 4.8)
+.IP *
+sparc64 (since Linux 4.12)
+.IP *
+mips64 (since Linux 4.13)
+.IP *
+arm32 (since Linux 4.14)
+.IP *
+x86_32 (since Linux 4.18)
+.PD
+.PP
+Whereas the following architectures have cBPF, but did not (yet) switch to eBPF
+JIT support:
+.IP * 4
+ppc32
+.PD 0
+.IP *
+sparc32
+.IP *
+mips32
+.PD
+.PP
 eBPF's instruction set has similar underlying principles as the cBPF
 instruction set, it however is modelled closer to the underlying
 architecture to better mimic native instruction sets with the aim to