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The port netdevs are each associated with a different local port number in the device. These local ports are grouped into groups of 4 (e.g. (1-4), (5-8)) called clusters. The cluster constitutes the one of two possible modules they can be mapped to. This mapping is board-specific and done by the device's firmware during init. When splitting a port by 4, the device requires us to first unmap all the ports in the cluster and then map each to a single lane in the module associated with the port netdev used as the handle for the operation. This means that two port netdevs will disappear, as only 100Gb/s (4 lanes) ports can be split and we are guaranteed to have two of these ((1, 3), (5, 7) etc.) in a cluster. When unsplit occurs we need to reinstantiate the two original 100Gb/s ports and map each to its origianl module. Therefore, during driver init store the initial local port to module mapping, so it can be used later during unsplitting. Note that a by 2 split doesn't require us to store the mapping, as we only need to reinstantiate one port whose module is known. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| cmd.h | ||
| core_hwmon.c | ||
| core.c | ||
| core.h | ||
| emad.h | ||
| item.h | ||
| Kconfig | ||
| Makefile | ||
| pci.c | ||
| pci.h | ||
| port.h | ||
| reg.h | ||
| spectrum_buffers.c | ||
| spectrum_switchdev.c | ||
| spectrum.c | ||
| spectrum.h | ||
| switchx2.c | ||
| trap.h | ||
| txheader.h | ||