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badf3ada60
This patch overloads the DSA master netdev, aka CPU Ethernet MAC to also include switch-side statistics, which is useful for debugging purposes, when the switch is not properly connected to the Ethernet MAC (duplex mismatch, (RG)MII electrical issues etc.). We accomplish this by retaining the original copy of the master netdev's ethtool_ops, and just overload the 3 operations we care about: get_sset_count, get_strings and get_ethtool_stats so as to intercept these calls and call into the original master_netdev ethtool_ops, plus our own. We take this approach as opposed to providing a set of DSA helper functions that would retrive the CPU port's statistics, because the entire purpose of DSA is to allow unmodified Ethernet MAC drivers to be used as CPU conduit interfaces, therefore, statistics overlay in such drivers would simply not scale. The new ethtool -S <iface> output would therefore look like this now: <iface> statistics p<2 digits cpu port number>_<switch MIB counter names> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| dsa_priv.h | ||
| dsa.c | ||
| Kconfig | ||
| Makefile | ||
| slave.c | ||
| tag_brcm.c | ||
| tag_dsa.c | ||
| tag_edsa.c | ||
| tag_trailer.c | ||