xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: sched: add API for registering unlocked offload block callbacks

Browse Source 
Extend struct flow_block_offload with "unlocked_driver_cb" flag to allow
registering and unregistering block hardware offload callbacks that do not
require caller to hold rtnl lock. Extend tcf_block with additional
lockeddevcnt counter that is incremented for each non-unlocked driver
callback attached to device. This counter is necessary to conditionally
obtain rtnl lock before calling hardware callbacks in following patches.

Register mlx5 tc block offload callbacks as "unlocked".

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Buslov
2019-08-26 16:45:01 +03:00
committed by David S. Miller
parent a449a3e77a
commit c9f14470d0
5 changed files with 13 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
net/sched/cls_api.c
View File

@@ -1418,6 +1418,8 @@ static int tcf_block_bind(struct tcf_block *block,
bo->extack);
if (err)
goto err_unroll;
if (!bo->unlocked_driver_cb)
block->lockeddevcnt++;
i++;
}
@@ -1433,6 +1435,8 @@ err_unroll:
block_cb->cb_priv, false,
tcf_block_offload_in_use(block),
NULL);
if (!bo->unlocked_driver_cb)
block->lockeddevcnt--;
}
flow_block_cb_free(block_cb);
}
@@ -1454,6 +1458,8 @@ static void tcf_block_unbind(struct tcf_block *block,
NULL);
list_del(&block_cb->list);
flow_block_cb_free(block_cb);
if (!bo->unlocked_driver_cb)
block->lockeddevcnt--;
}
}