bpf: make skb->tc_classid also readable

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Currently, the tc_classid from eBPF skb context is write-only, but there's
no good reason for tc programs to limit it to write-only. For example,
it can be used to transfer its state via tail calls where the resulting
tc_classid gets filled gradually.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Daniel Borkmann 2016-03-16 01:42:49 +01:00 • committed by David S. Miller

parent 019ded3aa7

commit 09c37a2c5b

1 changed files with 6 additions and 6 deletions

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net/core/filter.c

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