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authorMartin KaFai Lau <[email protected]>2022-03-09 01:04:56 -0800
committerDaniel Borkmann <[email protected]>2022-03-10 22:57:05 +0100
commit539de9328e3ab444efe51ddc7416ce2a3f0f23b2 (patch)
treef072bd14ec814bc1f408d924b7c138a753c215be /lib/string_helpers.c
parent3b5d4ddf8fe1f60082513f94bae586ac80188a03 (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 'lib/string_helpers.c')
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