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Date: Sun, 19 Apr 2020 01:52:57 +0300
From: Vladimir Oltean <olteanv@...il.com>
To: Po Liu <Po.Liu@....com>
Cc: "David S. Miller" <davem@...emloft.net>,
lkml <linux-kernel@...r.kernel.org>,
netdev <netdev@...r.kernel.org>,
Vinicius Costa Gomes <vinicius.gomes@...el.com>,
Claudiu Manoil <claudiu.manoil@....com>,
Vladimir Oltean <vladimir.oltean@....com>,
Alexandru Marginean <alexandru.marginean@....com>,
michael.chan@...adcom.com, vishal@...lsio.com, saeedm@...lanox.com,
leon@...nel.org, Jiri Pirko <jiri@...lanox.com>,
Ido Schimmel <idosch@...lanox.com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
Jakub Kicinski <kuba@...nel.org>,
Jamal Hadi Salim <jhs@...atatu.com>,
Cong Wang <xiyou.wangcong@...il.com>,
simon.horman@...ronome.com, pablo@...filter.org,
moshe@...lanox.com, Murali Karicheri <m-karicheri2@...com>,
Andre Guedes <andre.guedes@...ux.intel.com>,
Stephen Hemminger <stephen@...workplumber.org>
Subject: Re: [ v2,net-next 4/4] net: enetc: add tc flower psfp offload driver
Hi Po,
On Sat, 18 Apr 2020 at 04:35, Po Liu <Po.Liu@....com> wrote:
>
> This patch is to add tc flower offload for the enetc IEEE 802.1Qci(PSFP)
> function. There are four main feature parts to implement the flow
> policing and filtering for ingress flow with IEEE 802.1Qci features.
> They are stream identify(this is defined in the P802.1cb exactly but
> needed for 802.1Qci), stream filtering, stream gate and flow metering.
> Each function block includes many entries by index to assign parameters.
> So for one frame would be filtered by stream identify first, then
> flow into stream filter block by the same handle between stream identify
> and stream filtering. Then flow into stream gate control which assigned
> by the stream filtering entry. And then policing by the gate and limited
> by the max sdu in the filter block(optional). At last, policing by the
> flow metering block, index choosing at the fitering block.
> So you can see that each entry of block may link to many upper entries
> since they can be assigned same index means more streams want to share
> the same feature in the stream filtering or stream gate or flow
> metering.
> To implement such features, each stream filtered by source/destination
> mac address, some stream maybe also plus the vlan id value would be
> treated as one flow chain. This would be identified by the chain_index
> which already in the tc filter concept. Driver would maintain this chain
> and also with gate modules. The stream filter entry create by the gate
> index and flow meter(optional) entry id and also one priority value.
> Offloading only transfer the gate action and flow filtering parameters.
> Driver would create (or search same gate id and flow meter id and
> priority) one stream filter entry to set to the hardware. So stream
> filtering do not need transfer by the action offloading.
> This architecture is same with tc filter and actions relationship. tc
> filter maintain the list for each flow feature by keys. And actions
> maintain by the action list.
>
> Below showing a example commands by tc:
> > tc qdisc add dev eth0 ingress
> > ip link set eth0 address 10:00:80:00:00:00
> > tc filter add dev eth0 parent ffff: protocol ip chain 11 \
> flower skip_sw dst_mac 10:00:80:00:00:00 \
> action gate index 10 \
> sched-entry OPEN 200000000 1 8000000 \
> sched-entry CLOSE 100000000 -1 -1
>
> Command means to set the dst_mac 10:00:80:00:00:00 to index 11 of stream
> identify module. And the set the gate index 10 of stream gate module.
> The gate list is keeping OPEN state 200ms, and through the frames to the
> ingress queue 1, and max octets are the 8Mbytes.
>
> Signed-off-by: Po Liu <Po.Liu@....com>
> ---
> drivers/net/ethernet/freescale/enetc/enetc.c | 25 +-
> drivers/net/ethernet/freescale/enetc/enetc.h | 46 +-
> .../net/ethernet/freescale/enetc/enetc_hw.h | 142 +++
> .../net/ethernet/freescale/enetc/enetc_pf.c | 4 +-
> .../net/ethernet/freescale/enetc/enetc_qos.c | 1070 +++++++++++++++++
> 5 files changed, 1272 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c
> index 04aac7cbb506..298c55786fd9 100644
> --- a/drivers/net/ethernet/freescale/enetc/enetc.c
> +++ b/drivers/net/ethernet/freescale/enetc/enetc.c
> @@ -1521,6 +1521,8 @@ int enetc_setup_tc(struct net_device *ndev, enum tc_setup_type type,
> return enetc_setup_tc_cbs(ndev, type_data);
> case TC_SETUP_QDISC_ETF:
> return enetc_setup_tc_txtime(ndev, type_data);
> + case TC_SETUP_BLOCK:
> + return enetc_setup_tc_psfp(ndev, type_data);
> default:
> return -EOPNOTSUPP;
> }
> @@ -1573,17 +1575,23 @@ static int enetc_set_rss(struct net_device *ndev, int en)
> static int enetc_set_psfp(struct net_device *ndev, int en)
> {
> struct enetc_ndev_priv *priv = netdev_priv(ndev);
> + int err;
>
> if (en) {
> + err = enetc_psfp_enable(priv);
> + if (err)
> + return err;
> +
> priv->active_offloads |= ENETC_F_QCI;
> - enetc_get_max_cap(priv);
> - enetc_psfp_enable(&priv->si->hw);
> - } else {
> - priv->active_offloads &= ~ENETC_F_QCI;
> - memset(&priv->psfp_cap, 0, sizeof(struct psfp_cap));
> - enetc_psfp_disable(&priv->si->hw);
> + return 0;
> }
>
> + err = enetc_psfp_disable(priv);
> + if (err)
> + return err;
> +
> + priv->active_offloads &= ~ENETC_F_QCI;
> +
> return 0;
> }
>
> @@ -1591,14 +1599,15 @@ int enetc_set_features(struct net_device *ndev,
> netdev_features_t features)
> {
> netdev_features_t changed = ndev->features ^ features;
> + int err = 0;
>
> if (changed & NETIF_F_RXHASH)
> enetc_set_rss(ndev, !!(features & NETIF_F_RXHASH));
>
> if (changed & NETIF_F_HW_TC)
> - enetc_set_psfp(ndev, !!(features & NETIF_F_HW_TC));
> + err = enetc_set_psfp(ndev, !!(features & NETIF_F_HW_TC));
>
> - return 0;
> + return err;
> }
>
> #ifdef CONFIG_FSL_ENETC_PTP_CLOCK
> diff --git a/drivers/net/ethernet/freescale/enetc/enetc.h b/drivers/net/ethernet/freescale/enetc/enetc.h
> index 2cfe877c3778..b705464f6882 100644
> --- a/drivers/net/ethernet/freescale/enetc/enetc.h
> +++ b/drivers/net/ethernet/freescale/enetc/enetc.h
> @@ -300,6 +300,11 @@ int enetc_setup_tc_taprio(struct net_device *ndev, void *type_data);
> void enetc_sched_speed_set(struct net_device *ndev);
> int enetc_setup_tc_cbs(struct net_device *ndev, void *type_data);
> int enetc_setup_tc_txtime(struct net_device *ndev, void *type_data);
> +int enetc_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
> + void *cb_priv);
> +int enetc_setup_tc_psfp(struct net_device *ndev, void *type_data);
> +int enetc_psfp_init(struct enetc_ndev_priv *priv);
> +int enetc_psfp_clean(struct enetc_ndev_priv *priv);
>
> static inline void enetc_get_max_cap(struct enetc_ndev_priv *priv)
> {
> @@ -319,27 +324,60 @@ static inline void enetc_get_max_cap(struct enetc_ndev_priv *priv)
> priv->psfp_cap.max_psfp_meter = reg & ENETC_PFMCAPR_MSK;
> }
>
> -static inline void enetc_psfp_enable(struct enetc_hw *hw)
> +static inline int enetc_psfp_enable(struct enetc_ndev_priv *priv)
> {
> + struct enetc_hw *hw = &priv->si->hw;
> + int err;
> +
> + enetc_get_max_cap(priv);
> +
> + err = enetc_psfp_init(priv);
> + if (err)
> + return err;
> +
> enetc_wr(hw, ENETC_PPSFPMR, enetc_rd(hw, ENETC_PPSFPMR) |
> ENETC_PPSFPMR_PSFPEN | ENETC_PPSFPMR_VS |
> ENETC_PPSFPMR_PVC | ENETC_PPSFPMR_PVZC);
> +
> + return 0;
> }
>
> -static inline void enetc_psfp_disable(struct enetc_hw *hw)
> +static inline int enetc_psfp_disable(struct enetc_ndev_priv *priv)
> {
> + struct enetc_hw *hw = &priv->si->hw;
> + int err;
> +
> + err = enetc_psfp_clean(priv);
> + if (err)
> + return err;
> +
> enetc_wr(hw, ENETC_PPSFPMR, enetc_rd(hw, ENETC_PPSFPMR) &
> ~ENETC_PPSFPMR_PSFPEN & ~ENETC_PPSFPMR_VS &
> ~ENETC_PPSFPMR_PVC & ~ENETC_PPSFPMR_PVZC);
> +
> + memset(&priv->psfp_cap, 0, sizeof(struct psfp_cap));
> +
> + return 0;
> }
> +
> #else
> #define enetc_setup_tc_taprio(ndev, type_data) -EOPNOTSUPP
> #define enetc_sched_speed_set(ndev) (void)0
> #define enetc_setup_tc_cbs(ndev, type_data) -EOPNOTSUPP
> #define enetc_setup_tc_txtime(ndev, type_data) -EOPNOTSUPP
> +#define enetc_setup_tc_psfp(ndev, type_data) -EOPNOTSUPP
> +#define enetc_setup_tc_block_cb NULL
> +
> #define enetc_get_max_cap(p) \
> memset(&((p)->psfp_cap), 0, sizeof(struct psfp_cap))
>
> -#define enetc_psfp_enable(hw) (void)0
> -#define enetc_psfp_disable(hw) (void)0
> +static inline int enetc_psfp_enable(struct enetc_ndev_priv *priv)
> +{
> + return 0;
> +}
> +
> +static inline int enetc_psfp_disable(struct enetc_ndev_priv *priv)
> +{
> + return 0;
> +}
> #endif
> diff --git a/drivers/net/ethernet/freescale/enetc/enetc_hw.h b/drivers/net/ethernet/freescale/enetc/enetc_hw.h
> index 587974862f48..6314051bc6c1 100644
> --- a/drivers/net/ethernet/freescale/enetc/enetc_hw.h
> +++ b/drivers/net/ethernet/freescale/enetc/enetc_hw.h
> @@ -567,6 +567,9 @@ enum bdcr_cmd_class {
> BDCR_CMD_RFS,
> BDCR_CMD_PORT_GCL,
> BDCR_CMD_RECV_CLASSIFIER,
> + BDCR_CMD_STREAM_IDENTIFY,
> + BDCR_CMD_STREAM_FILTER,
> + BDCR_CMD_STREAM_GCL,
> __BDCR_CMD_MAX_LEN,
> BDCR_CMD_MAX_LEN = __BDCR_CMD_MAX_LEN - 1,
> };
> @@ -598,13 +601,152 @@ struct tgs_gcl_data {
> struct gce entry[];
> };
>
> +/* class 7, command 0, Stream Identity Entry Configuration */
> +struct streamid_conf {
> + __le32 stream_handle; /* init gate value */
> + __le32 iports;
> + u8 id_type;
> + u8 oui[3];
> + u8 res[3];
> + u8 en;
> +};
> +
> +#define ENETC_CBDR_SID_VID_MASK 0xfff
> +#define ENETC_CBDR_SID_VIDM BIT(12)
> +#define ENETC_CBDR_SID_TG_MASK 0xc000
> +/* streamid_conf address point to this data space */
> +struct streamid_data {
> + union {
> + u8 dmac[6];
> + u8 smac[6];
> + };
> + u16 vid_vidm_tg;
> +};
> +
> +#define ENETC_CBDR_SFI_PRI_MASK 0x7
> +#define ENETC_CBDR_SFI_PRIM BIT(3)
> +#define ENETC_CBDR_SFI_BLOV BIT(4)
> +#define ENETC_CBDR_SFI_BLEN BIT(5)
> +#define ENETC_CBDR_SFI_MSDUEN BIT(6)
> +#define ENETC_CBDR_SFI_FMITEN BIT(7)
> +#define ENETC_CBDR_SFI_ENABLE BIT(7)
> +/* class 8, command 0, Stream Filter Instance, Short Format */
> +struct sfi_conf {
> + __le32 stream_handle;
> + u8 multi;
> + u8 res[2];
> + u8 sthm;
> + /* Max Service Data Unit or Flow Meter Instance Table index.
> + * Depending on the value of FLT this represents either Max
> + * Service Data Unit (max frame size) allowed by the filter
> + * entry or is an index into the Flow Meter Instance table
> + * index identifying the policer which will be used to police
> + * it.
> + */
> + __le16 fm_inst_table_index;
> + __le16 msdu;
> + __le16 sg_inst_table_index;
> + u8 res1[2];
> + __le32 input_ports;
> + u8 res2[3];
> + u8 en;
> +};
> +
> +/* class 8, command 2 stream Filter Instance status query short format
> + * command no need structure define
> + * Stream Filter Instance Query Statistics Response data
> + */
> +struct sfi_counter_data {
> + u32 matchl;
> + u32 matchh;
> + u32 msdu_dropl;
> + u32 msdu_droph;
> + u32 stream_gate_dropl;
> + u32 stream_gate_droph;
> + u32 flow_meter_dropl;
> + u32 flow_meter_droph;
> +};
> +
> +#define ENETC_CBDR_SGI_OIPV_MASK 0x7
> +#define ENETC_CBDR_SGI_OIPV_EN BIT(3)
> +#define ENETC_CBDR_SGI_CGTST BIT(6)
> +#define ENETC_CBDR_SGI_OGTST BIT(7)
> +#define ENETC_CBDR_SGI_CFG_CHG BIT(1)
> +#define ENETC_CBDR_SGI_CFG_PND BIT(2)
> +#define ENETC_CBDR_SGI_OEX BIT(4)
> +#define ENETC_CBDR_SGI_OEXEN BIT(5)
> +#define ENETC_CBDR_SGI_IRX BIT(6)
> +#define ENETC_CBDR_SGI_IRXEN BIT(7)
> +#define ENETC_CBDR_SGI_ACLLEN_MASK 0x3
> +#define ENETC_CBDR_SGI_OCLLEN_MASK 0xc
> +#define ENETC_CBDR_SGI_EN BIT(7)
> +/* class 9, command 0, Stream Gate Instance Table, Short Format
> + * class 9, command 2, Stream Gate Instance Table entry query write back
> + * Short Format
> + */
> +struct sgi_table {
> + u8 res[8];
> + u8 oipv;
> + u8 res0[2];
> + u8 ocgtst;
> + u8 res1[7];
> + u8 gset;
> + u8 oacl_len;
> + u8 res2[2];
> + u8 en;
> +};
> +
> +#define ENETC_CBDR_SGI_AIPV_MASK 0x7
> +#define ENETC_CBDR_SGI_AIPV_EN BIT(3)
> +#define ENETC_CBDR_SGI_AGTST BIT(7)
> +
> +/* class 9, command 1, Stream Gate Control List, Long Format */
> +struct sgcl_conf {
> + u8 aipv;
> + u8 res[2];
> + u8 agtst;
> + u8 res1[4];
> + union {
> + struct {
> + u8 res2[4];
> + u8 acl_len;
> + u8 res3[3];
> + };
> + u8 cct[8]; /* Config change time */
> + };
> +};
> +
> +#define ENETC_CBDR_SGL_IOMEN BIT(0)
> +#define ENETC_CBDR_SGL_IPVEN BIT(3)
> +#define ENETC_CBDR_SGL_GTST BIT(4)
> +#define ENETC_CBDR_SGL_IPV_MASK 0xe
> +/* Stream Gate Control List Entry */
> +struct sgce {
> + u32 interval;
> + u8 msdu[3];
> + u8 multi;
> +};
> +
> +/* stream control list class 9 , cmd 1 data buffer */
> +struct sgcl_data {
> + u32 btl;
> + u32 bth;
> + u32 ct;
> + u32 cte;
> + struct sgce sgcl[0];
> +};
> +
> struct enetc_cbd {
> union{
> + struct sfi_conf sfi_conf;
> + struct sgi_table sgi_table;
> struct {
> __le32 addr[2];
> union {
> __le32 opt[4];
> struct tgs_gcl_conf gcl_conf;
> + struct streamid_conf sid_set;
> + struct sgcl_conf sgcl_conf;
> };
> }; /* Long format */
> __le32 data[6];
> diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
> index eacd597b55f2..d06fce0dcd8a 100644
> --- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
> +++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
> @@ -739,12 +739,10 @@ static void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
> if (si->hw_features & ENETC_SI_F_QBV)
> priv->active_offloads |= ENETC_F_QBV;
>
> - if (si->hw_features & ENETC_SI_F_PSFP) {
> + if (si->hw_features & ENETC_SI_F_PSFP && !enetc_psfp_enable(priv)) {
> priv->active_offloads |= ENETC_F_QCI;
> ndev->features |= NETIF_F_HW_TC;
> ndev->hw_features |= NETIF_F_HW_TC;
> - enetc_get_max_cap(priv);
> - enetc_psfp_enable(&si->hw);
> }
>
> /* pick up primary MAC address from SI */
> diff --git a/drivers/net/ethernet/freescale/enetc/enetc_qos.c b/drivers/net/ethernet/freescale/enetc/enetc_qos.c
> index 0c6bf3a55a9a..7944c243903c 100644
> --- a/drivers/net/ethernet/freescale/enetc/enetc_qos.c
> +++ b/drivers/net/ethernet/freescale/enetc/enetc_qos.c
> @@ -5,6 +5,9 @@
>
> #include <net/pkt_sched.h>
> #include <linux/math64.h>
> +#include <linux/refcount.h>
> +#include <net/pkt_cls.h>
> +#include <net/tc_act/tc_gate.h>
>
> static u16 enetc_get_max_gcl_len(struct enetc_hw *hw)
> {
> @@ -331,3 +334,1070 @@ int enetc_setup_tc_txtime(struct net_device *ndev, void *type_data)
>
> return 0;
> }
> +
> +enum streamid_type {
> + STREAMID_TYPE_RESERVED = 0,
> + STREAMID_TYPE_NULL,
> + STREAMID_TYPE_SMAC,
> +};
> +
> +enum streamid_vlan_tagged {
> + STREAMID_VLAN_RESERVED = 0,
> + STREAMID_VLAN_TAGGED,
> + STREAMID_VLAN_UNTAGGED,
> + STREAMID_VLAN_ALL,
> +};
> +
> +#define ENETC_PSFP_WILDCARD -1
> +#define HANDLE_OFFSET 100
> +
> +enum forward_type {
> + FILTER_ACTION_TYPE_PSFP = BIT(0),
> + FILTER_ACTION_TYPE_ACL = BIT(1),
> + FILTER_ACTION_TYPE_BOTH = GENMASK(1, 0),
> +};
> +
> +/* This is for limit output type for input actions */
> +struct actions_fwd {
> + u64 actions;
> + u64 keys; /* include the must needed keys */
> + enum forward_type output;
> +};
> +
> +struct psfp_streamfilter_counters {
> + u64 matching_frames_count;
> + u64 passing_frames_count;
> + u64 not_passing_frames_count;
> + u64 passing_sdu_count;
> + u64 not_passing_sdu_count;
> + u64 red_frames_count;
> +};
> +
> +struct enetc_streamid {
> + u32 index;
> + union {
> + u8 src_mac[6];
> + u8 dst_mac[6];
> + };
> + u8 filtertype;
> + u16 vid;
> + u8 tagged;
> + s32 handle;
> +};
> +
> +struct enetc_psfp_filter {
> + u32 index;
> + s32 handle;
> + s8 prio;
> + u32 gate_id;
> + s32 meter_id;
> + refcount_t refcount;
> + struct hlist_node node;
> +};
> +
> +struct enetc_psfp_gate {
> + u32 index;
> + s8 init_ipv;
> + u64 basetime;
> + u64 cycletime;
> + u64 cycletimext;
> + u32 num_entries;
> + refcount_t refcount;
> + struct hlist_node node;
> + struct action_gate_entry entries[0];
> +};
> +
> +struct enetc_stream_filter {
> + struct enetc_streamid sid;
> + u32 sfi_index;
> + u32 sgi_index;
> + struct flow_stats stats;
> + struct hlist_node node;
> +};
> +
> +struct enetc_psfp {
> + unsigned long dev_bitmap;
> + unsigned long *psfp_sfi_bitmap;
> + struct hlist_head stream_list;
> + struct hlist_head psfp_filter_list;
> + struct hlist_head psfp_gate_list;
> + spinlock_t psfp_lock; /* spinlock for the struct enetc_psfp r/w */
> +};
> +
> +struct actions_fwd enetc_act_fwd[] = {
> + {
> + BIT(FLOW_ACTION_GATE),
> + BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS),
> + FILTER_ACTION_TYPE_PSFP
> + },
> + /* example for ACL actions */
> + {
> + BIT(FLOW_ACTION_DROP),
> + 0,
> + FILTER_ACTION_TYPE_ACL
> + }
> +};
> +
> +static struct enetc_psfp epsfp = {
> + .psfp_sfi_bitmap = NULL,
> +};
> +
> +static LIST_HEAD(enetc_block_cb_list);
> +
> +static inline int enetc_get_port(struct enetc_ndev_priv *priv)
> +{
> + return priv->si->pdev->devfn & 0x7;
> +}
> +
> +/* Stream Identity Entry Set Descriptor */
> +static int enetc_streamid_hw_set(struct enetc_ndev_priv *priv,
> + struct enetc_streamid *sid,
> + u8 enable)
> +{
> + struct enetc_cbd cbd = {.cmd = 0};
> + struct streamid_data *si_data;
> + struct streamid_conf *si_conf;
> + u16 data_size;
> + dma_addr_t dma;
> + int err;
> +
> + if (sid->index >= priv->psfp_cap.max_streamid)
> + return -EINVAL;
> +
> + if (sid->filtertype != STREAMID_TYPE_NULL &&
> + sid->filtertype != STREAMID_TYPE_SMAC)
> + return -EOPNOTSUPP;
> +
> + /* Disable operation before enable */
> + cbd.index = cpu_to_le16((u16)sid->index);
> + cbd.cls = BDCR_CMD_STREAM_IDENTIFY;
> + cbd.status_flags = 0;
> +
> + data_size = sizeof(struct streamid_data);
> + si_data = kzalloc(data_size, __GFP_DMA | GFP_KERNEL);
> + cbd.length = cpu_to_le16(data_size);
> +
> + dma = dma_map_single(&priv->si->pdev->dev, si_data,
> + data_size, DMA_FROM_DEVICE);
> + if (dma_mapping_error(&priv->si->pdev->dev, dma)) {
> + netdev_err(priv->si->ndev, "DMA mapping failed!\n");
> + kfree(si_data);
> + return -ENOMEM;
> + }
> +
> + cbd.addr[0] = lower_32_bits(dma);
> + cbd.addr[1] = upper_32_bits(dma);
> + memset(si_data->dmac, 0xff, ETH_ALEN);
> + si_data->vid_vidm_tg =
> + cpu_to_le16(ENETC_CBDR_SID_VID_MASK
> + + ((0x3 << 14) | ENETC_CBDR_SID_VIDM));
> +
> + si_conf = &cbd.sid_set;
> + /* Only one port supported for one entry, set itself */
> + si_conf->iports = 1 << enetc_get_port(priv);
> + si_conf->id_type = 1;
> + si_conf->oui[2] = 0x0;
> + si_conf->oui[1] = 0x80;
> + si_conf->oui[0] = 0xC2;
> +
> + err = enetc_send_cmd(priv->si, &cbd);
> + if (err)
> + return -EINVAL;
> +
> + if (!enable) {
> + kfree(si_data);
> + return 0;
> + }
> +
> + /* Enable the entry overwrite again incase space flushed by hardware */
> + memset(&cbd, 0, sizeof(cbd));
> +
> + cbd.index = cpu_to_le16((u16)sid->index);
> + cbd.cmd = 0;
> + cbd.cls = BDCR_CMD_STREAM_IDENTIFY;
> + cbd.status_flags = 0;
> +
> + si_conf->en = 0x80;
> + si_conf->stream_handle = cpu_to_le32(sid->handle);
> + si_conf->iports = 1 << enetc_get_port(priv);
> + si_conf->id_type = sid->filtertype;
> + si_conf->oui[2] = 0x0;
> + si_conf->oui[1] = 0x80;
> + si_conf->oui[0] = 0xC2;
> +
> + memset(si_data, 0, data_size);
> +
> + cbd.length = cpu_to_le16(data_size);
> +
> + cbd.addr[0] = lower_32_bits(dma);
> + cbd.addr[1] = upper_32_bits(dma);
> +
> + /* VIDM default to be 1.
> + * VID Match. If set (b1) then the VID must match, otherwise
> + * any VID is considered a match. VIDM setting is only used
> + * when TG is set to b01.
> + */
> + if (si_conf->id_type == STREAMID_TYPE_NULL) {
> + ether_addr_copy(si_data->dmac, sid->dst_mac);
> + si_data->vid_vidm_tg =
> + cpu_to_le16((sid->vid & ENETC_CBDR_SID_VID_MASK) +
> + ((((u16)(sid->tagged) & 0x3) << 14)
> + | ENETC_CBDR_SID_VIDM));
> + } else if (si_conf->id_type == STREAMID_TYPE_SMAC) {
> + ether_addr_copy(si_data->smac, sid->src_mac);
> + si_data->vid_vidm_tg =
> + cpu_to_le16((sid->vid & ENETC_CBDR_SID_VID_MASK) +
> + ((((u16)(sid->tagged) & 0x3) << 14)
> + | ENETC_CBDR_SID_VIDM));
> + }
> +
> + err = enetc_send_cmd(priv->si, &cbd);
> + kfree(si_data);
> +
> + return err;
> +}
> +
> +/* Stream Filter Instance Set Descriptor */
> +static int enetc_streamfilter_hw_set(struct enetc_ndev_priv *priv,
> + struct enetc_psfp_filter *sfi,
> + u8 enable)
> +{
> + struct enetc_cbd cbd = {.cmd = 0};
> + struct sfi_conf *sfi_config;
> +
> + cbd.index = cpu_to_le16(sfi->index);
> + cbd.cls = BDCR_CMD_STREAM_FILTER;
> + cbd.status_flags = 0x80;
> + cbd.length = cpu_to_le16(1);
> +
> + sfi_config = &cbd.sfi_conf;
> + if (!enable)
> + goto exit;
> +
> + sfi_config->en = 0x80;
> +
> + if (sfi->handle >= 0) {
> + sfi_config->stream_handle =
> + cpu_to_le32(sfi->handle);
> + sfi_config->sthm |= 0x80;
> + }
> +
> + sfi_config->sg_inst_table_index = cpu_to_le16(sfi->gate_id);
> + sfi_config->input_ports = 1 << enetc_get_port(priv);
> +
> + /* The priority value which may be matched against the
> + * frame’s priority value to determine a match for this entry.
> + */
> + if (sfi->prio >= 0)
> + sfi_config->multi |= (sfi->prio & 0x7) | 0x8;
> +
> + /* Filter Type. Identifies the contents of the MSDU/FM_INST_INDEX
> + * field as being either an MSDU value or an index into the Flow
> + * Meter Instance table.
> + * TODO: no limit max sdu
> + */
> +
> + if (sfi->meter_id >= 0) {
> + sfi_config->fm_inst_table_index = cpu_to_le16(sfi->meter_id);
> + sfi_config->multi |= 0x80;
> + }
> +
> +exit:
> + return enetc_send_cmd(priv->si, &cbd);
> +}
> +
> +static int enetc_streamcounter_hw_get(struct enetc_ndev_priv *priv,
> + u32 index,
> + struct psfp_streamfilter_counters *cnt)
> +{
> + struct enetc_cbd cbd = { .cmd = 2 };
> + struct sfi_counter_data *data_buf;
> + dma_addr_t dma;
> + u16 data_size;
> + int err;
> +
> + cbd.index = cpu_to_le16((u16)index);
> + cbd.cmd = 2;
> + cbd.cls = BDCR_CMD_STREAM_FILTER;
> + cbd.status_flags = 0;
> +
> + data_size = sizeof(struct sfi_counter_data);
> + data_buf = kzalloc(data_size, __GFP_DMA | GFP_KERNEL);
> + if (!data_buf)
> + return -ENOMEM;
> +
> + dma = dma_map_single(&priv->si->pdev->dev, data_buf,
> + data_size, DMA_FROM_DEVICE);
> + if (dma_mapping_error(&priv->si->pdev->dev, dma)) {
> + netdev_err(priv->si->ndev, "DMA mapping failed!\n");
> + err = -ENOMEM;
> + goto exit;
> + }
> + cbd.addr[0] = lower_32_bits(dma);
> + cbd.addr[1] = upper_32_bits(dma);
> +
> + cbd.length = cpu_to_le16(data_size);
> +
> + err = enetc_send_cmd(priv->si, &cbd);
> + if (err)
> + goto exit;
> +
> + cnt->matching_frames_count =
> + ((u64)le32_to_cpu(data_buf->matchh) << 32)
> + + data_buf->matchl;
> +
> + cnt->not_passing_sdu_count =
> + ((u64)le32_to_cpu(data_buf->msdu_droph) << 32)
> + + data_buf->msdu_dropl;
> +
> + cnt->passing_sdu_count = cnt->matching_frames_count
> + - cnt->not_passing_sdu_count;
> +
> + cnt->not_passing_frames_count =
> + ((u64)le32_to_cpu(data_buf->stream_gate_droph) << 32)
> + + le32_to_cpu(data_buf->stream_gate_dropl);
> +
> + cnt->passing_frames_count = cnt->matching_frames_count
> + - cnt->not_passing_sdu_count
> + - cnt->not_passing_frames_count;
> +
> + cnt->red_frames_count =
> + ((u64)le32_to_cpu(data_buf->flow_meter_droph) << 32)
> + + le32_to_cpu(data_buf->flow_meter_dropl);
> +
> +exit:
> + kfree(data_buf);
> + return err;
> +}
> +
> +static int get_start_ns(struct enetc_ndev_priv *priv, u64 cycle, u64 *start)
> +{
> + u64 now_lo, now_hi, now, n;
> +
> + now_lo = enetc_rd(&priv->si->hw, ENETC_SICTR0);
> + now_hi = enetc_rd(&priv->si->hw, ENETC_SICTR1);
> + now = now_lo | now_hi << 32;
> +
> + if (WARN_ON(!cycle))
> + return -EFAULT;
> +
> + n = div64_u64(now, cycle);
> +
> + *start = (n + 1) * cycle;
> +
> + return 0;
> +}
> +
> +/* Stream Gate Instance Set Descriptor */
> +static int enetc_streamgate_hw_set(struct enetc_ndev_priv *priv,
> + struct enetc_psfp_gate *sgi,
> + u8 enable)
> +{
> + struct enetc_cbd cbd = { .cmd = 0 };
> + struct sgi_table *sgi_config;
> + struct sgcl_conf *sgcl_config;
> + struct sgcl_data *sgcl_data;
> + struct sgce *sgce;
> + dma_addr_t dma;
> + u16 data_size;
> + int err, i;
> +
> + cbd.index = cpu_to_le16(sgi->index);
> + cbd.cmd = 0;
> + cbd.cls = BDCR_CMD_STREAM_GCL;
> + cbd.status_flags = 0x80;
> +
> + /* disable */
> + if (!enable)
> + return enetc_send_cmd(priv->si, &cbd);
> +
> + if (!sgi->num_entries)
> + return 0;
> +
> + if (sgi->num_entries > priv->psfp_cap.max_psfp_gatelist ||
> + !sgi->cycletime)
> + return -EINVAL;
> +
> + /* enable */
> + sgi_config = &cbd.sgi_table;
> +
> + /* Keep open before gate list start */
> + sgi_config->ocgtst = 0x80;
> +
> + sgi_config->oipv = (sgi->init_ipv < 0) ?
> + 0x0 : ((sgi->init_ipv & 0x7) | 0x8);
> +
> + sgi_config->en = 0x80;
> +
> + /* Basic config */
> + err = enetc_send_cmd(priv->si, &cbd);
> + if (err)
> + return -EINVAL;
> +
> + memset(&cbd, 0, sizeof(cbd));
> +
> + cbd.index = cpu_to_le16(sgi->index);
> + cbd.cmd = 1;
> + cbd.cls = BDCR_CMD_STREAM_GCL;
> + cbd.status_flags = 0;
> +
> + sgcl_config = &cbd.sgcl_conf;
> +
> + sgcl_config->acl_len = (sgi->num_entries - 1) & 0x3;
> +
> + data_size = struct_size(sgcl_data, sgcl, sgi->num_entries);
> +
> + sgcl_data = kzalloc(data_size, __GFP_DMA | GFP_KERNEL);
> + if (!sgcl_data)
> + return -ENOMEM;
> +
> + cbd.length = cpu_to_le16(data_size);
> +
> + dma = dma_map_single(&priv->si->pdev->dev,
> + sgcl_data, data_size,
> + DMA_FROM_DEVICE);
> + if (dma_mapping_error(&priv->si->pdev->dev, dma)) {
> + netdev_err(priv->si->ndev, "DMA mapping failed!\n");
> + kfree(sgcl_data);
> + return -ENOMEM;
> + }
> +
> + cbd.addr[0] = lower_32_bits(dma);
> + cbd.addr[1] = upper_32_bits(dma);
> +
> + sgce = &sgcl_data->sgcl[0];
> +
> + sgcl_config->agtst = 0x80;
> +
> + sgcl_data->ct = cpu_to_le32(sgi->cycletime);
> + sgcl_data->cte = cpu_to_le32(sgi->cycletimext);
> +
> + if (sgi->init_ipv >= 0)
> + sgcl_config->aipv = (sgi->init_ipv & 0x7) | 0x8;
> +
> + for (i = 0; i < sgi->num_entries; i++) {
> + struct action_gate_entry *from = &sgi->entries[i];
> + struct sgce *to = &sgce[i];
> +
> + if (from->gate_state)
> + to->multi |= 0x10;
> +
> + if (from->ipv >= 0)
> + to->multi |= ((from->ipv & 0x7) << 5) | 0x08;
> +
> + if (from->maxoctets)
> + to->multi |= 0x01;
> +
> + to->interval = cpu_to_le32(from->interval);
> + to->msdu[0] = from->maxoctets & 0xFF;
> + to->msdu[1] = (from->maxoctets >> 8) & 0xFF;
> + to->msdu[2] = (from->maxoctets >> 16) & 0xFF;
> + }
> +
> + /* If basetime is 0, calculate start time */
> + if (!sgi->basetime) {
> + u64 start;
> +
> + err = get_start_ns(priv, sgi->cycletime, &start);
> + if (err)
> + goto exit;
> + sgcl_data->btl = cpu_to_le32(lower_32_bits(start));
> + sgcl_data->bth = cpu_to_le32(upper_32_bits(start));
> + } else {
> + u32 hi, lo;
> +
> + hi = upper_32_bits(sgi->basetime);
> + lo = lower_32_bits(sgi->basetime);
> + sgcl_data->bth = cpu_to_le32(hi);
> + sgcl_data->btl = cpu_to_le32(lo);
> + }
> +
> + err = enetc_send_cmd(priv->si, &cbd);
> +
> +exit:
> + kfree(sgcl_data);
> +
> + return err;
> +}
> +
> +static struct enetc_stream_filter *enetc_get_stream_by_index(u32 index)
> +{
> + struct enetc_stream_filter *f;
> +
> + hlist_for_each_entry(f, &epsfp.stream_list, node)
> + if (f->sid.index == index)
> + return f;
> +
> + return NULL;
> +}
> +
> +static struct enetc_psfp_gate *enetc_get_gate_by_index(u32 index)
> +{
> + struct enetc_psfp_gate *g;
> +
> + hlist_for_each_entry(g, &epsfp.psfp_gate_list, node)
> + if (g->index == index)
> + return g;
> +
> + return NULL;
> +}
> +
> +static struct enetc_psfp_filter *enetc_get_filter_by_index(u32 index)
> +{
> + struct enetc_psfp_filter *s;
> +
> + hlist_for_each_entry(s, &epsfp.psfp_filter_list, node)
> + if (s->index == index)
> + return s;
> +
> + return NULL;
> +}
> +
> +static struct enetc_psfp_filter
> + *enetc_psfp_check_sfi(struct enetc_psfp_filter *sfi)
> +{
> + struct enetc_psfp_filter *s;
> +
> + hlist_for_each_entry(s, &epsfp.psfp_filter_list, node)
> + if (s->gate_id == sfi->gate_id &&
> + s->prio == sfi->prio &&
> + s->meter_id == sfi->meter_id)
> + return s;
> +
> + return NULL;
> +}
> +
> +static int enetc_get_free_index(struct enetc_ndev_priv *priv)
> +{
> + u32 max_size = priv->psfp_cap.max_psfp_filter;
> + unsigned long index;
> +
> + index = find_first_zero_bit(epsfp.psfp_sfi_bitmap, max_size);
> + if (index == max_size)
> + return -1;
> +
> + return index;
> +}
> +
> +static void stream_filter_unref(struct enetc_ndev_priv *priv, u32 index)
> +{
> + struct enetc_psfp_filter *sfi;
> + u8 z;
> +
> + sfi = enetc_get_filter_by_index(index);
> + WARN_ON(!sfi);
> + z = refcount_dec_and_test(&sfi->refcount);
> +
> + if (z) {
> + enetc_streamfilter_hw_set(priv, sfi, false);
> + hlist_del(&sfi->node);
> + kfree(sfi);
> + clear_bit(sfi->index, epsfp.psfp_sfi_bitmap);
> + }
> +}
> +
> +static void stream_gate_unref(struct enetc_ndev_priv *priv, u32 index)
> +{
> + struct enetc_psfp_gate *sgi;
> + u8 z;
> +
> + sgi = enetc_get_gate_by_index(index);
> + WARN_ON(!sgi);
> + z = refcount_dec_and_test(&sgi->refcount);
> + if (z) {
> + enetc_streamgate_hw_set(priv, sgi, false);
> + hlist_del(&sgi->node);
> + kfree(sgi);
> + }
> +}
> +
> +static void remove_one_chain(struct enetc_ndev_priv *priv,
> + struct enetc_stream_filter *filter)
> +{
> + stream_gate_unref(priv, filter->sgi_index);
> + stream_filter_unref(priv, filter->sfi_index);
> +
> + hlist_del(&filter->node);
> + kfree(filter);
> +}
> +
> +static int enetc_psfp_hw_set(struct enetc_ndev_priv *priv,
> + struct enetc_streamid *sid,
> + struct enetc_psfp_filter *sfi,
> + struct enetc_psfp_gate *sgi)
> +{
> + int err;
> +
> + err = enetc_streamid_hw_set(priv, sid, true);
> + if (err)
> + return err;
> +
> + if (sfi) {
> + err = enetc_streamfilter_hw_set(priv, sfi, true);
> + if (err)
> + goto revert_sid;
> + }
> +
> + err = enetc_streamgate_hw_set(priv, sgi, true);
> + if (err)
> + goto revert_sfi;
> +
> + return 0;
> +
> +revert_sfi:
> + if (sfi)
> + enetc_streamfilter_hw_set(priv, sfi, false);
> +revert_sid:
> + enetc_streamid_hw_set(priv, sid, false);
> + return err;
> +}
> +
> +struct actions_fwd *enetc_check_flow_actions(u64 acts, unsigned int inputkeys)
> +{
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(enetc_act_fwd); i++)
> + if (acts == enetc_act_fwd[i].actions &&
> + inputkeys & enetc_act_fwd[i].keys)
> + return &enetc_act_fwd[i];
> +
> + return NULL;
> +}
> +
> +static int enetc_psfp_parse_clsflower(struct enetc_ndev_priv *priv,
> + struct flow_cls_offload *f)
> +{
> + struct flow_rule *rule = flow_cls_offload_flow_rule(f);
> + struct netlink_ext_ack *extack = f->common.extack;
> + struct enetc_stream_filter *filter, *old_filter;
> + struct enetc_psfp_filter *sfi, *old_sfi;
> + struct enetc_psfp_gate *sgi, *old_sgi;
> + struct flow_action_entry *entry;
> + struct action_gate_entry *e;
> + u8 sfi_overwrite = 0;
> + int entries_size;
> + int i, err;
> +
> + if (f->common.chain_index >= priv->psfp_cap.max_streamid) {
> + NL_SET_ERR_MSG_MOD(extack, "No Stream identify resource!");
> + return -ENOSPC;
> + }
> +
> + flow_action_for_each(i, entry, &rule->action)
> + if (entry->id == FLOW_ACTION_GATE)
> + break;
> +
> + if (entry->id != FLOW_ACTION_GATE)
> + return -EINVAL;
> +
> + filter = kzalloc(sizeof(*filter), GFP_KERNEL);
> + if (!filter)
> + return -ENOMEM;
> +
> + filter->sid.index = f->common.chain_index;
> +
> + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
> + struct flow_match_eth_addrs match;
> +
> + flow_rule_match_eth_addrs(rule, &match);
> +
> + if (!is_zero_ether_addr(match.mask->dst)) {
Does ENETC support masked matching on MAC address? If not, you should
error out if the mask is not ff:ff:ff:ff:ff:ff.
> + ether_addr_copy(filter->sid.dst_mac, match.key->dst);
> + filter->sid.filtertype = STREAMID_TYPE_NULL;
> + }
> +
> + if (!is_zero_ether_addr(match.mask->src)) {
> + ether_addr_copy(filter->sid.src_mac, match.key->src);
> + filter->sid.filtertype = STREAMID_TYPE_SMAC;
> + }
> + } else {
> + NL_SET_ERR_MSG_MOD(extack, "Unsupported, must ETH_ADDRS");
> + return -EINVAL;
> + }
> +
> + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
> + struct flow_match_vlan match;
> +
> + flow_rule_match_vlan(rule, &match);
> + if (match.mask->vlan_priority) {
> + if (match.mask->vlan_priority !=
> + (VLAN_PRIO_MASK >> VLAN_PRIO_SHIFT)) {
> + NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN priority");
> + err = -EINVAL;
> + goto free_filter;
> + }
> + }
> +
> + if (match.mask->vlan_tpid) {
> + if (match.mask->vlan_tpid != VLAN_VID_MASK) {
I'm pretty sure that vlan_tpid is the EtherType (0x8100, etc), and
that you actually meant vlan_id.
> + NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN id");
> + err = -EINVAL;
> + goto free_filter;
> + }
> +
> + filter->sid.vid = match.key->vlan_tpid;
> + if (!filter->sid.vid)
> + filter->sid.tagged = STREAMID_VLAN_UNTAGGED;
> + else
> + filter->sid.tagged = STREAMID_VLAN_TAGGED;
> + }
> + } else {
> + filter->sid.tagged = STREAMID_VLAN_ALL;
> + }
> +
> + /* parsing gate action */
> + if (entry->gate.index >= priv->psfp_cap.max_psfp_gate) {
> + NL_SET_ERR_MSG_MOD(extack, "No Stream Gate resource!");
> + err = -ENOSPC;
> + goto free_filter;
> + }
> +
> + if (entry->gate.num_entries >= priv->psfp_cap.max_psfp_gatelist) {
> + NL_SET_ERR_MSG_MOD(extack, "No Stream Gate resource!");
> + err = -ENOSPC;
> + goto free_filter;
> + }
> +
> + entries_size = struct_size(sgi, entries, entry->gate.num_entries);
> + sgi = kzalloc(entries_size, GFP_KERNEL);
> + if (!sgi) {
> + err = -ENOMEM;
> + goto free_filter;
> + }
> +
> + refcount_set(&sgi->refcount, 1);
> + sgi->index = entry->gate.index;
> + sgi->init_ipv = entry->gate.prio;
> + sgi->basetime = entry->gate.basetime;
> + sgi->cycletime = entry->gate.cycletime;
> + sgi->num_entries = entry->gate.num_entries;
> +
> + e = sgi->entries;
> + for (i = 0; i < entry->gate.num_entries; i++) {
> + e[i].gate_state = entry->gate.entries[i].gate_state;
> + e[i].interval = entry->gate.entries[i].interval;
> + e[i].ipv = entry->gate.entries[i].ipv;
> + e[i].maxoctets = entry->gate.entries[i].maxoctets;
> + }
> +
> + filter->sgi_index = sgi->index;
> +
> + sfi = kzalloc(sizeof(*sfi), GFP_KERNEL);
> + if (!sfi) {
> + err = -ENOMEM;
> + goto free_gate;
> + }
> +
> + refcount_set(&sfi->refcount, 1);
> + sfi->gate_id = sgi->index;
> +
> + /* flow meter not support yet */
> + sfi->meter_id = ENETC_PSFP_WILDCARD;
> +
> + /* prio ref the filter prio */
> + if (f->common.prio && f->common.prio <= BIT(3))
> + sfi->prio = f->common.prio - 1;
> + else
> + sfi->prio = ENETC_PSFP_WILDCARD;
> +
> + old_sfi = enetc_psfp_check_sfi(sfi);
> + if (!old_sfi) {
> + int index;
> +
> + index = enetc_get_free_index(priv);
> + if (sfi->handle < 0) {
> + NL_SET_ERR_MSG_MOD(extack, "No Stream Filter resource!");
> + err = -ENOSPC;
> + goto free_sfi;
> + }
> +
> + sfi->index = index;
> + sfi->handle = index + HANDLE_OFFSET;
> + /* Update the stream filter handle also */
> + filter->sid.handle = sfi->handle;
> + filter->sfi_index = sfi->index;
> + sfi_overwrite = 0;
> + } else {
> + filter->sfi_index = old_sfi->index;
> + filter->sid.handle = old_sfi->handle;
> + sfi_overwrite = 1;
> + }
> +
> + err = enetc_psfp_hw_set(priv, &filter->sid,
> + sfi_overwrite ? NULL : sfi, sgi);
> + if (err)
> + goto free_sfi;
> +
> + spin_lock(&epsfp.psfp_lock);
> + /* Remove the old node if exist and update with a new node */
> + old_sgi = enetc_get_gate_by_index(filter->sgi_index);
> + if (old_sgi) {
> + refcount_set(&sgi->refcount,
> + refcount_read(&old_sgi->refcount) + 1);
> + hlist_del(&old_sgi->node);
> + kfree(old_sgi);
> + }
> +
> + hlist_add_head(&sgi->node, &epsfp.psfp_gate_list);
> +
> + if (!old_sfi) {
> + hlist_add_head(&sfi->node, &epsfp.psfp_filter_list);
> + set_bit(sfi->index, epsfp.psfp_sfi_bitmap);
> + } else {
> + kfree(sfi);
> + refcount_inc(&old_sfi->refcount);
> + }
> +
> + old_filter = enetc_get_stream_by_index(filter->sid.index);
> + if (old_filter)
> + remove_one_chain(priv, old_filter);
> +
> + filter->stats.lastused = jiffies;
> + hlist_add_head(&filter->node, &epsfp.stream_list);
> +
> + spin_unlock(&epsfp.psfp_lock);
> +
> + return 0;
> +
> +free_sfi:
> + kfree(sfi);
> +free_gate:
> + kfree(sgi);
> +free_filter:
> + kfree(filter);
> +
> + return err;
> +}
> +
> +static int enetc_config_clsflower(struct enetc_ndev_priv *priv,
> + struct flow_cls_offload *cls_flower)
> +{
> + struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower);
> + struct netlink_ext_ack *extack = cls_flower->common.extack;
> + struct flow_dissector *dissector = rule->match.dissector;
> + struct flow_action *action = &rule->action;
> + struct flow_action_entry *entry;
> + struct actions_fwd *fwd;
> + u64 actions = 0;
> + int i, err;
> +
> + if (!flow_action_has_entries(action)) {
> + NL_SET_ERR_MSG_MOD(extack, "At least one action is needed");
> + return -EINVAL;
> + }
> +
> + flow_action_for_each(i, entry, action)
> + actions |= BIT(entry->id);
> +
> + fwd = enetc_check_flow_actions(actions, dissector->used_keys);
> + if (!fwd) {
> + NL_SET_ERR_MSG_MOD(extack, "Unsupported filter type!");
> + return -EOPNOTSUPP;
> + }
> +
> + if (fwd->output & FILTER_ACTION_TYPE_PSFP) {
> + err = enetc_psfp_parse_clsflower(priv, cls_flower);
> + if (err) {
> + NL_SET_ERR_MSG_MOD(extack, "Invalid PSFP inputs");
> + return err;
> + }
> + } else {
> + NL_SET_ERR_MSG_MOD(extack, "Unsupported actions");
> + return -EOPNOTSUPP;
> + }
> +
> + return 0;
> +}
> +
> +static int enetc_psfp_destroy_clsflower(struct enetc_ndev_priv *priv,
> + struct flow_cls_offload *f)
> +{
> + struct enetc_stream_filter *filter;
> + struct netlink_ext_ack *extack = f->common.extack;
> + int err;
> +
> + if (f->common.chain_index >= priv->psfp_cap.max_streamid) {
> + NL_SET_ERR_MSG_MOD(extack, "No Stream identify resource!");
> + return -ENOSPC;
> + }
> +
> + filter = enetc_get_stream_by_index(f->common.chain_index);
> + if (!filter)
> + return -EINVAL;
> +
> + err = enetc_streamid_hw_set(priv, &filter->sid, false);
> + if (err)
> + return err;
> +
> + remove_one_chain(priv, filter);
> +
> + return 0;
> +}
> +
> +static int enetc_destroy_clsflower(struct enetc_ndev_priv *priv,
> + struct flow_cls_offload *f)
> +{
> + return enetc_psfp_destroy_clsflower(priv, f);
> +}
> +
> +static int enetc_psfp_get_stats(struct enetc_ndev_priv *priv,
> + struct flow_cls_offload *f)
> +{
> + struct psfp_streamfilter_counters counters = {};
> + struct enetc_stream_filter *filter;
> + struct flow_stats stats = {};
> + int err;
> +
> + filter = enetc_get_stream_by_index(f->common.chain_index);
> + if (!filter)
> + return -EINVAL;
> +
> + err = enetc_streamcounter_hw_get(priv, filter->sfi_index, &counters);
> + if (err)
> + return -EINVAL;
> +
> + spin_lock(&epsfp.psfp_lock);
> + stats.pkts = counters.matching_frames_count - filter->stats.pkts;
> + stats.lastused = filter->stats.lastused;
> + filter->stats.pkts += stats.pkts;
> + spin_unlock(&epsfp.psfp_lock);
> +
> + flow_stats_update(&f->stats, 0x0, stats.pkts, stats.lastused,
> + FLOW_ACTION_HW_STATS_DELAYED);
> +
> + return 0;
> +}
> +
> +static int enetc_setup_tc_cls_flower(struct enetc_ndev_priv *priv,
> + struct flow_cls_offload *cls_flower)
> +{
> + switch (cls_flower->command) {
> + case FLOW_CLS_REPLACE:
> + return enetc_config_clsflower(priv, cls_flower);
> + case FLOW_CLS_DESTROY:
> + return enetc_destroy_clsflower(priv, cls_flower);
> + case FLOW_CLS_STATS:
> + return enetc_psfp_get_stats(priv, cls_flower);
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> +static inline void clean_psfp_sfi_bitmap(void)
> +{
> + bitmap_free(epsfp.psfp_sfi_bitmap);
> + epsfp.psfp_sfi_bitmap = NULL;
> +}
> +
> +static void clean_stream_list(void)
> +{
> + struct enetc_stream_filter *s;
> + struct hlist_node *tmp;
> +
> + hlist_for_each_entry_safe(s, tmp, &epsfp.stream_list, node) {
> + hlist_del(&s->node);
> + kfree(s);
> + }
> +}
> +
> +static void clean_sfi_list(void)
> +{
> + struct enetc_psfp_filter *sfi;
> + struct hlist_node *tmp;
> +
> + hlist_for_each_entry_safe(sfi, tmp, &epsfp.psfp_filter_list, node) {
> + hlist_del(&sfi->node);
> + kfree(sfi);
> + }
> +}
> +
> +static void clean_sgi_list(void)
> +{
> + struct enetc_psfp_gate *sgi;
> + struct hlist_node *tmp;
> +
> + hlist_for_each_entry_safe(sgi, tmp, &epsfp.psfp_gate_list, node) {
> + hlist_del(&sgi->node);
> + kfree(sgi);
> + }
> +}
> +
> +static void clean_psfp_all(void)
> +{
> + /* Disable all list nodes and free all memory */
> + clean_sfi_list();
> + clean_sgi_list();
> + clean_stream_list();
> + epsfp.dev_bitmap = 0;
> + clean_psfp_sfi_bitmap();
> +}
> +
> +int enetc_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
> + void *cb_priv)
> +{
> + struct net_device *ndev = cb_priv;
> +
> + if (!tc_can_offload(ndev))
> + return -EOPNOTSUPP;
> +
> + switch (type) {
> + case TC_SETUP_CLSFLOWER:
> + return enetc_setup_tc_cls_flower(netdev_priv(ndev), type_data);
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> +int enetc_psfp_init(struct enetc_ndev_priv *priv)
> +{
> + if (epsfp.psfp_sfi_bitmap)
> + return 0;
> +
> + epsfp.psfp_sfi_bitmap = bitmap_zalloc(priv->psfp_cap.max_psfp_filter,
> + GFP_KERNEL);
> + if (!epsfp.psfp_sfi_bitmap)
> + return -ENOMEM;
> +
> + spin_lock_init(&epsfp.psfp_lock);
> +
> + if (list_empty(&enetc_block_cb_list))
> + epsfp.dev_bitmap = 0;
> +
> + return 0;
> +}
> +
> +int enetc_psfp_clean(struct enetc_ndev_priv *priv)
> +{
> + if (!list_empty(&enetc_block_cb_list))
> + return -EBUSY;
> +
> + clean_psfp_all();
> +
> + return 0;
> +}
> +
> +int enetc_setup_tc_psfp(struct net_device *ndev, void *type_data)
> +{
> + struct enetc_ndev_priv *priv = netdev_priv(ndev);
> + struct flow_block_offload *f = type_data;
> + int err;
> +
> + err = flow_block_cb_setup_simple(f, &enetc_block_cb_list,
> + enetc_setup_tc_block_cb,
> + ndev, ndev, true);
> + if (err)
> + return err;
> +
> + switch (f->command) {
> + case FLOW_BLOCK_BIND:
> + set_bit(enetc_get_port(priv), &epsfp.dev_bitmap);
> + break;
> + case FLOW_BLOCK_UNBIND:
> + clear_bit(enetc_get_port(priv), &epsfp.dev_bitmap);
> + if (!epsfp.dev_bitmap)
> + clean_psfp_all();
> + break;
> + }
> +
> + return 0;
> +}
> --
> 2.17.1
>
Thanks,
-Vladimir
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