| Message ID | 20211008193801.41297-1-snelson@pensando.io (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 5c976a56570f29aaf4a2f9a1bf99789c252183c9 |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | [net] ionic: don't remove netdev->dev_addr when syncing uc list | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Single patches do not need cover letters |
| netdev/fixes_present | success | Fixes tag present in non-next series |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Clearly marked for net |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | warning | 2 maintainers not CCed: allenbh@pensando.io saeedm@nvidia.com |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Signed-off-by tag matches author and committer |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Fixes tag looks correct |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 10 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/header_inline | success | No static functions without inline keyword in header files |
Hello: This patch was applied to netdev/net.git (master) by David S. Miller <davem@davemloft.net>: On Fri, 8 Oct 2021 12:38:01 -0700 you wrote: > Bridging, and possibly other upper stack gizmos, adds the > lower device's netdev->dev_addr to its own uc list, and > then requests it be deleted when the upper bridge device is > removed. This delete request also happens with the bridging > vlan_filtering is enabled and then disabled. > > Bonding has a similar behavior with the uc list, but since it > also uses set_mac to manage netdev->dev_addr, it doesn't have > the same the failure case. > > [...] Here is the summary with links: - [net] ionic: don't remove netdev->dev_addr when syncing uc list https://git.kernel.org/netdev/net/c/5c976a56570f You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c index ccf3ffcd3939..7f3322ce044c 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c @@ -1379,6 +1379,10 @@ static int ionic_addr_add(struct net_device *netdev, const u8 *addr) static int ionic_addr_del(struct net_device *netdev, const u8 *addr) { + /* Don't delete our own address from the uc list */ + if (ether_addr_equal(addr, netdev->dev_addr)) + return 0; + return ionic_lif_list_addr(netdev_priv(netdev), addr, DEL_ADDR); }
Bridging, and possibly other upper stack gizmos, adds the lower device's netdev->dev_addr to its own uc list, and then requests it be deleted when the upper bridge device is removed. This delete request also happens with the bridging vlan_filtering is enabled and then disabled. Bonding has a similar behavior with the uc list, but since it also uses set_mac to manage netdev->dev_addr, it doesn't have the same the failure case. Because we store our netdev->dev_addr in our uc list, we need to ignore the delete request from dev_uc_sync so as to not lose the address and all hope of communicating. Note that ndo_set_mac_address is expressly changing netdev->dev_addr, so no limitation is set there. Fixes: 2a654540be10 ("ionic: Add Rx filter and rx_mode ndo support") Signed-off-by: Shannon Nelson <snelson@pensando.io> --- drivers/net/ethernet/pensando/ionic/ionic_lif.c | 4 ++++ 1 file changed, 4 insertions(+)