diff options
| author | Martin KaFai Lau <[email protected]> | 2022-03-09 01:04:56 -0800 |
|---|---|---|
| committer | Daniel Borkmann <[email protected]> | 2022-03-10 22:57:05 +0100 |
| commit | 539de9328e3ab444efe51ddc7416ce2a3f0f23b2 (patch) | |
| tree | f072bd14ec814bc1f408d924b7c138a753c215be /scripts/gdb/linux/device.py | |
| parent | 3b5d4ddf8fe1f60082513f94bae586ac80188a03 (diff) | |
bpf: Simplify insn rewrite on BPF_READ __sk_buff->tstamp
The skb->tc_at_ingress and skb->mono_delivery_time are at the same
byte offset. Thus, only one BPF_LDX_MEM(BPF_B) is needed
and both bits can be tested together.
/* BPF_READ: a = __sk_buff->tstamp */
if (skb->tc_at_ingress && skb->mono_delivery_time)
a = 0;
else
a = skb->tstamp;
Signed-off-by: Martin KaFai Lau <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'scripts/gdb/linux/device.py')
0 files changed, 0 insertions, 0 deletions