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Adapt to latest version of BCC #21

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Adapt to latest version of BCC #21

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5 changes: 3 additions & 2 deletions ebpf-http-statistics.c
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Original file line number Diff line number Diff line change
Expand Up @@ -83,14 +83,15 @@ int kprobe__skb_copy_datagram_iter(struct pt_regs *ctx, const struct sk_buff *sk
* parsers infeasible.
*/
u8 data[8] = {};
void* dst = skb->data + offset;
if (available_data > HTTP_REQUEST_MIN_LEN) {
/* We have confirmed having access to 7 bytes, but need 8 bytes to check the
* space after OPTIONS. bpf_probe_read() requires its second argument to be
* an immediate, so we obtain the data in this unsexy way.
*/
bpf_probe_read(&data, 8, skb->data + offset);
bpf_probe_read(&data, 8, dst);
} else {
bpf_probe_read(&data, 7, skb->data + offset);
bpf_probe_read(&data, 7, dst);
}

switch (data[0]) {
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