On 9/9/19 11:25 PM, Alan Maguire wrote:
> On Sun, 8 Sep 2019, Yonghong Song wrote:
>
>> For net side bpf_perf_event_output, we have
>> static unsigned long bpf_skb_copy(void *dst_buff, const void *skb,
>> unsigned long off, unsigned long len)
>> {
>>
On Sun, 8 Sep 2019, Yonghong Song wrote:
> For net side bpf_perf_event_output, we have
> static unsigned long bpf_skb_copy(void *dst_buff, const void *skb,
>unsigned long off, unsigned long len)
> {
> void *ptr = skb_header_pointer(skb, off, len, dst_b
On 9/7/19 2:40 PM, Alan Maguire wrote:
> packet capture is especially valuable in tracing contexts, so
> extend bpf_pcap helper to take a tracing-derived skb pointer
> as an argument.
>
> In the case of tracing programs, the starting protocol
> (corresponding to libpcap DLT_* values; 1 for Ether
packet capture is especially valuable in tracing contexts, so
extend bpf_pcap helper to take a tracing-derived skb pointer
as an argument.
In the case of tracing programs, the starting protocol
(corresponding to libpcap DLT_* values; 1 for Ethernet, 12 for
IP, etc) needs to be specified and should
