Copy packet size from __sk_buff.len#310
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Instead of calculating the packet size by substracting data from data_end, use __sk_buff.len. This reduce the number of instructions for TC and CGROUP_SKB programs by 2. Additionally, it prevents erroneous size calculation if data_end is unset (can occurs with BPF_PROG_RUN).
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Instead of calculating the packet size by substracting
datafromdata_end, use__sk_buff.len. This reduces the number of instructions for TC and CGROUP_SKB programs by 2.Additionally, it prevents erroneous size calculation if
data_endis unset (can occur withBPF_PROG_RUN).