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| author | Jiri Pirko | 2018-01-17 11:46:51 +0100 |
|---|---|---|
| committer | David S. Miller | 2018-01-17 20:53:57 +0100 |
| commit | 7960d1daf278cbe23bb48974fe6ae6a1e44c3c15 (patch) | |
| tree | 8372dff3b1b3c49916b48db78c56b93fd6dfe611 /include/uapi/linux/rtnetlink.h | |
| parent | net: sched: keep track of offloaded filters and check tc offload feature (diff) | |
| download | kernel-qcow2-linux-7960d1daf278cbe23bb48974fe6ae6a1e44c3c15.tar.gz kernel-qcow2-linux-7960d1daf278cbe23bb48974fe6ae6a1e44c3c15.tar.xz kernel-qcow2-linux-7960d1daf278cbe23bb48974fe6ae6a1e44c3c15.zip | |
net: sched: use block index as a handle instead of qdisc when block is shared
As the tcm_ifindex with value TCM_IFINDEX_MAGIC_BLOCK is invalid ifindex,
use it to indicate that we work with block, instead of qdisc.
So if tcm_ifindex is set to TCM_IFINDEX_MAGIC_BLOCK, tcm_parent is used
to carry block_index.
If the block is set to be shared between at least 2 qdiscs, it is
forbidden to use the qdisc handle to add/delete filters. In that case,
userspace has to pass block_index.
Also, for dump of the filters, in case the block is shared in between at
least 2 qdiscs, the each filter is dumped with tcm_ifindex value
TCM_IFINDEX_MAGIC_BLOCK and tcm_parent set to block_index. That gives
the user clear indication, that the filter belongs to a shared block
and not only to one qdisc under which it is dumped.
Suggested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/rtnetlink.h')
| -rw-r--r-- | include/uapi/linux/rtnetlink.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h index 843e29aa3cac..da878f2e7c39 100644 --- a/include/uapi/linux/rtnetlink.h +++ b/include/uapi/linux/rtnetlink.h @@ -541,9 +541,19 @@ struct tcmsg { int tcm_ifindex; __u32 tcm_handle; __u32 tcm_parent; +/* tcm_block_index is used instead of tcm_parent + * in case tcm_ifindex == TCM_IFINDEX_MAGIC_BLOCK + */ +#define tcm_block_index tcm_parent __u32 tcm_info; }; +/* For manipulation of filters in shared block, tcm_ifindex is set to + * TCM_IFINDEX_MAGIC_BLOCK, and tcm_parent is aliased to tcm_block_index + * which is the block index. + */ +#define TCM_IFINDEX_MAGIC_BLOCK (0xFFFFFFFFU) + enum { TCA_UNSPEC, TCA_KIND, |