This patchset adds support for logging MCDI (Management-Controller-to- Driver Interface) interactions between the sfc driver and a bound device, to aid in debugging. Solarflare has a tool to decode the resulting traces and will look to open-source this if there is any external interest, but the protocol is already detailed in drivers/net/ethernet/sfc/mcdi_pcol.h. The logging buffer we allocate per MCDI context is a work area for constructing each individual message before logging it with netif_info. The reason the buffer is long-lived is simply to avoid the overhead of allocating and freeing it every MCDI call, since MCDIs are already known to be serialised for other reasons.
-- v3: add some explanations to cover letter and patch #4 v2: avoid long lines in cover letter; fix multiline comment style Edward Cree (3): sfc: add tracing of MCDI commands sfc: add sysfs entry to control MCDI tracing sfc: add module parameter to enable MCDI logging on new functions Jon Cooper (1): sfc: Initialise MCDI buffers to 0 on declaration. drivers/net/ethernet/sfc/Kconfig | 9 ++++ drivers/net/ethernet/sfc/ef10.c | 27 ++++++---- drivers/net/ethernet/sfc/efx.c | 49 +++++++++++++++--- drivers/net/ethernet/sfc/mcdi.c | 108 ++++++++++++++++++++++++++++++++++++--- drivers/net/ethernet/sfc/mcdi.h | 14 +++-- drivers/net/ethernet/sfc/ptp.c | 6 +-- 6 files changed, 181 insertions(+), 32 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
