linux

dropmon: add ability to detect when hardware dropsrxpackets Patch to add the ability to detect drops in hardware interfaces via dropwatch. Adds a tracepoint to net_rx_action to signal everytime a napi instance is polled. The dropmon code then periodically checks to see if the rx_frames counter has changed, and if so, adds a drop notification to the netlink protocol, using the reserved all-0's vector to indicate the drop location was in hardware, rather than somewhere in the code. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> include/linux/net_dropmon.h \| 8 ++ include/trace/napi.h \| 11 +++ net/core/dev.c \| 5 + net/core/drop_monitor.c \| 124 ++++++++++++++++++++++++++++++++++++++++++-- net/core/net-traces.c \| 4 + net/core/netpoll.c \| 2 6 files changed, 149 insertions(+), 5 deletions(-) Signed-off-by: David S. Miller <davem@davemloft.net> 2009-05-21 07:36:08 +00:00