[Intel-wired-lan] [PATCH 1/6] [net-next]net: sched: act_mirred: Extend redirect action to accept a traffic class
Jamal Hadi Salim
jhs at mojatatu.com
Tue Aug 1 10:22:16 UTC 2017
On 17-07-31 08:37 PM, Amritha Nambiar wrote:
> The Mirred/redirect action is extended to forward to a traffic
> class on the device. The traffic class index needs to be
> provided in addition to the device's ifindex.
>
> Example:
> # tc filter add dev eth0 protocol ip parent ffff: prio 1 flower\
> dst_ip 192.168.1.1/32 ip_proto udp dst_port 22\
> skip_sw indev eth0 action mirred ingress redirect dev eth0 tc 1
>
> Signed-off-by: Amritha Nambiar <amritha.nambiar at intel.com>
> ---
> include/net/tc_act/tc_mirred.h | 7 +++++++
> include/uapi/linux/tc_act/tc_mirred.h | 5 +++++
> net/sched/act_mirred.c | 17 +++++++++++++++++
> 3 files changed, 29 insertions(+)
>
> diff --git a/include/net/tc_act/tc_mirred.h b/include/net/tc_act/tc_mirred.h
> index 604bc31..60058c4 100644
> --- a/include/net/tc_act/tc_mirred.h
> +++ b/include/net/tc_act/tc_mirred.h
> @@ -9,6 +9,8 @@ struct tcf_mirred {
> int tcfm_eaction;
> int tcfm_ifindex;
> bool tcfm_mac_header_xmit;
> + u8 tcfm_tc;
> + u32 flags;
> struct net_device __rcu *tcfm_dev;
> struct list_head tcfm_list;
> };
> @@ -37,4 +39,9 @@ static inline int tcf_mirred_ifindex(const struct tc_action *a)
> return to_mirred(a)->tcfm_ifindex;
> }
>
> +static inline int tcf_mirred_tc(const struct tc_action *a)
> +{
> + return to_mirred(a)->tcfm_tc;
> +}
> +
> #endif /* __NET_TC_MIR_H */
> diff --git a/include/uapi/linux/tc_act/tc_mirred.h b/include/uapi/linux/tc_act/tc_mirred.h
> index 3d7a2b3..8ff4d76 100644
> --- a/include/uapi/linux/tc_act/tc_mirred.h
> +++ b/include/uapi/linux/tc_act/tc_mirred.h
> @@ -9,6 +9,10 @@
> #define TCA_EGRESS_MIRROR 2 /* mirror packet to EGRESS */
> #define TCA_INGRESS_REDIR 3 /* packet redirect to INGRESS*/
> #define TCA_INGRESS_MIRROR 4 /* mirror packet to INGRESS */
> +
> +#define MIRRED_F_TC_MAP 0x1
> +#define MIRRED_TC_MAP_MAX 0x10
Assuming this is the max number of queues?
Where does this upper bound come from? Is it a spec
or an intel thing? If spec - mentioning which
spec and section would be useful.
cheers,
jamal
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