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authorEsben Haabendal <esben@geanix.com>2021-06-17 11:49:28 +0200
committerDavid S. Miller <davem@davemloft.net>2021-06-17 20:39:48 +0200
commit14870b75fe0be5c565339f008ba25326f86a7ce8 (patch)
tree258a2f07982f0fa8a7f9bd9cf4632cff349b1cdc /fs/notify/dnotify
parentnet: gianfar: Add definitions for CAR1 and CAM1 register bits (diff)
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net: gianfar: Implement rx_missed_errors counter
Devices with RMON support has a 16-bit RDRP counter. It provides: "Receive dropped packets counter. Increments for frames received which are streamed to system but are later dropped due to lack of system resources." To handle more than 2^16 dropped packets, a carry bit in CAR1 register is set on overflow, so we enable irq when this is set, extending the counter to 2^64 for handling situations where lots of packets are missed (e.g. during heavy network storms). Signed-off-by: Esben Haabendal <esben@geanix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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