Jesper Dangaard Brouer 4c03bdd7b5 xdp: adjust xdp redirect tracepoint to include return error code ... The return error code need to be included in the tracepoint xdp:xdp_redirect, else its not possible to distinguish successful or failed XDP_REDIRECT transmits. XDP have no queuing mechanism. Thus, it is fairly easily to overrun a NIC transmit queue. The eBPF program invoking helpers (bpf_redirect or bpf_redirect_map) to redirect a packet doesn't get any feedback whether the packet was actually transmitted. Info on failed transmits in the tracepoint xdp:xdp_redirect, is interesting as this opens for providing a feedback-loop to the receiving XDP program. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-08-18 16:18:40 -07:00
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events	xdp: adjust xdp redirect tracepoint to include return error code	2017-08-18 16:18:40 -07:00
define_trace.h	tracing: Introduce TRACE_EVENT_FN_COND macro	2015-12-23 14:27:21 -05:00
perf.h	tracing: Use outer () on __get_str() definition	2016-07-15 15:50:58 -04:00
syscall.h	tracing: Rename ftrace_event_{call,class} to trace_event_{call,class}	2015-05-13 14:06:10 -04:00
trace_events.h	tracing: define TRACE_DEFINE_SIZEOF() macro to map sizeof's to their values	2017-06-13 17:10:57 -04:00