mirror of
https://github.com/torvalds/linux.git
synced 2024-12-23 19:31:53 +00:00
3e0629cb6c
The source MAC is needed in RoCE when building the QP1 header. Currently, this is obtained from the source net device. However, the net device may not yet exist, or can be destroyed in parallel to this QP1 send operation (e.g through the VPI port change flow) so accessing it may cause a kernel crash. To fix this, we maintain a source MAC cache per port for the net device in struct mlx4_ib_roce. This cached MAC is initialized to be the default MAC address obtained during HCA initialization via QUERY_PORT. This cached MAC is updated via the netdev event notifier handler. Since the cached MAC is held in an atomic64 object, we do not need locking when accessing it. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com> |
||
|---|---|---|
| .. | ||
| amso1100 | ||
| cxgb3 | ||
| cxgb4 | ||
| ehca | ||
| ipath | ||
| mlx4 | ||
| mlx5 | ||
| mthca | ||
| nes | ||
| ocrdma | ||
| qib | ||
| usnic | ||
| Makefile | ||