Improve the description resp. provide some more details. Signed-off-by: Daniel Borkmann <dborkman@xxxxxxxxxx> --- man7/packet.7 | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/man7/packet.7 b/man7/packet.7 index 1d3f222..7a2ce1e 100644 --- a/man7/packet.7 +++ b/man7/packet.7 @@ -431,9 +431,14 @@ integer option before creating the ring. .BR PACKET_QDISC_BYPASS " (since Linux 3.14)" .\" commit d346a3fae3ff1d99f5d0c819bf86edf9094a26a1 By default, packets sent through packet sockets pass through the kernel's -qdisc (traffic control) layer. -This can be bypassed by setting this integer option to 1; -this is useful for usage scenarios similar to pktgen. +qdisc (traffic control) layer, which is fine for the vast majority of use +cases. +For traffic generator appliances using packet socket that intend to flood +the network with brute force i.e., to test devices under load in a similar +fashion to pktgen, this layer can be bypassed by setting this integer option +to 1. Side-effects are that packet buffering in qdisc layer is avoided +which will lead to increased drops when net device transmit queues are busy; +therefore, use at your own risk. .SS Ioctls .B SIOCGSTAMP can be used to receive the timestamp of the last received packet. -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
