From 75cabb46935b6de8e2bdfde563e460ac41cfff12 Mon Sep 17 00:00:00 2001 From: Erni Sri Satya Vennela Date: Tue, 17 Jun 2025 00:17:34 -0700 Subject: net: mana: Add support for net_shaper_ops Introduce support for net_shaper_ops in the MANA driver, enabling configuration of rate limiting on the MANA NIC. To apply rate limiting, the driver issues a HWC command via mana_set_bw_clamp() and updates the corresponding shaper object in the net_shaper cache. If an error occurs during this process, the driver restores the previous speed by querying the current link configuration using mana_query_link_cfg(). The minimum supported bandwidth is 100 Mbps, and only values that are exact multiples of 100 Mbps are allowed. Any other values are rejected. To remove a shaper, the driver resets the bandwidth to the maximum supported by the SKU using mana_set_bw_clamp() and clears the associated cache entry. If an error occurs during this process, the shaper details are retained. On the hardware that does not support these APIs, the net-shaper calls to set speed would fail. Set the speed: ./tools/net/ynl/pyynl/cli.py \ --spec Documentation/netlink/specs/net_shaper.yaml \ --do set --json '{"ifindex":'$IFINDEX', "handle":{"scope": "netdev", "id":'$ID' }, "bw-max": 200000000 }' Get the shaper details: ./tools/net/ynl/pyynl/cli.py \ --spec Documentation/netlink/specs/net_shaper.yaml \ --do get --json '{"ifindex":'$IFINDEX', "handle":{"scope": "netdev", "id":'$ID' }}' > {'bw-max': 200000000, > 'handle': {'scope': 'netdev'}, > 'ifindex': $IFINDEX, > 'metric': 'bps'} Delete the shaper object: ./tools/net/ynl/pyynl/cli.py \ --spec Documentation/netlink/specs/net_shaper.yaml \ --do delete --json '{"ifindex":'$IFINDEX', "handle":{"scope": "netdev","id":'$ID' }}' Signed-off-by: Erni Sri Satya Vennela Reviewed-by: Haiyang Zhang Reviewed-by: Shradha Gupta Reviewed-by: Saurabh Singh Sengar Reviewed-by: Long Li Link: https://patch.msgid.link/1750144656-2021-3-git-send-email-ernis@linux.microsoft.com Signed-off-by: Paolo Abeni --- include/net/mana/mana.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'include') diff --git a/include/net/mana/mana.h b/include/net/mana/mana.h index 4176edf1be71..038b18340e51 100644 --- a/include/net/mana/mana.h +++ b/include/net/mana/mana.h @@ -5,6 +5,7 @@ #define _MANA_H #include +#include #include "gdma.h" #include "hw_channel.h" @@ -526,7 +527,12 @@ struct mana_port_context { struct mutex vport_mutex; int vport_use_count; + /* Net shaper handle*/ + struct net_shaper_handle handle; + u16 port_idx; + /* Currently configured speed (mbps) */ + u32 speed; bool port_is_up; bool port_st_save; /* Saved port state */ @@ -562,6 +568,9 @@ struct bpf_prog *mana_xdp_get(struct mana_port_context *apc); void mana_chn_setxdp(struct mana_port_context *apc, struct bpf_prog *prog); int mana_bpf(struct net_device *ndev, struct netdev_bpf *bpf); void mana_query_gf_stats(struct mana_port_context *apc); +int mana_query_link_cfg(struct mana_port_context *apc); +int mana_set_bw_clamp(struct mana_port_context *apc, u32 speed, + int enable_clamping); void mana_query_phy_stats(struct mana_port_context *apc); int mana_pre_alloc_rxbufs(struct mana_port_context *apc, int mtu, int num_queues); void mana_pre_dealloc_rxbufs(struct mana_port_context *apc); @@ -589,6 +598,8 @@ enum mana_command_code { MANA_FENCE_RQ = 0x20006, MANA_CONFIG_VPORT_RX = 0x20007, MANA_QUERY_VPORT_CONFIG = 0x20008, + MANA_QUERY_LINK_CONFIG = 0x2000A, + MANA_SET_BW_CLAMP = 0x2000B, MANA_QUERY_PHY_STAT = 0x2000c, /* Privileged commands for the PF mode */ @@ -598,6 +609,35 @@ enum mana_command_code { MANA_DEREGISTER_HW_PORT = 0x28004, }; +/* Query Link Configuration*/ +struct mana_query_link_config_req { + struct gdma_req_hdr hdr; + mana_handle_t vport; +}; /* HW DATA */ + +struct mana_query_link_config_resp { + struct gdma_resp_hdr hdr; + u32 qos_speed_mbps; + u8 qos_unconfigured; + u8 reserved1[3]; + u32 link_speed_mbps; + u8 reserved2[4]; +}; /* HW DATA */ + +/* Set Bandwidth Clamp*/ +struct mana_set_bw_clamp_req { + struct gdma_req_hdr hdr; + mana_handle_t vport; + enum TRI_STATE enable_clamping; + u32 link_speed_mbps; +}; /* HW DATA */ + +struct mana_set_bw_clamp_resp { + struct gdma_resp_hdr hdr; + u8 qos_unconfigured; + u8 reserved[7]; +}; /* HW DATA */ + /* Query Device Configuration */ struct mana_query_device_cfg_req { struct gdma_req_hdr hdr; -- cgit v1.2.3