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Date: Thu, 20 Oct 2022 11:10:02 +0200
From: Steen Hegelund <steen.hegelund@...rochip.com>
To: Casper Andersson <casper.casan@...il.com>
CC: "David S . Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
<UNGLinuxDriver@...rochip.com>,
Randy Dunlap <rdunlap@...radead.org>,
Russell King <rmk+kernel@...linux.org.uk>,
"Wan Jiabing" <wanjiabing@...o.com>,
Nathan Huckleberry <nhuck@...gle.com>,
<linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH net-next v2 5/9] net: microchip: sparx5: Adding port
keyset config and callback interface
Hi Casper,
On Thu, 2022-10-20 at 09:33 +0200, Casper Andersson wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>
> Hi Steen,
>
> On 2022-10-19 13:42, Steen Hegelund wrote:
> > This provides a default port keyset configuration for the Sparx5 IS2 VCAP
> > where all ports and all lookups in IS2 use the same keyset (MAC_ETYPE) for
> > all types of traffic.
> >
> > This means that no matter what frame type is received on any front port it
> > will generate the MAC_ETYPE keyset in the IS VCAP and any rule in the IS2
> > VCAP that uses this keyset will be matched against the keys in the
> > MAC_ETYPE keyset.
> >
> > The callback interface used by the VCAP API is populated with Sparx5
> > specific handler functions that takes care of the actual reading and
> > writing to data to the Sparx5 IS2 VCAP instance.
> >
> > A few functions are also added to the VCAP API to support addition of rule
> > fields such as the ingress port mask and the lookup bit.
> >
> > The IS2 VCAP in Sparx5 is really divided in two instances with lookup 0
> > and 1 in the first instance and lookup 2 and 3 in the second instance.
> > The lookup bit selects lookup 0 or 3 in the respective instance when it is
> > set.
> >
> > Signed-off-by: Steen Hegelund <steen.hegelund@...rochip.com>
> > ---
> > .../microchip/sparx5/sparx5_vcap_impl.c | 345 ++++++++++++++++++
> > .../net/ethernet/microchip/vcap/vcap_api.c | 81 ++++
> > .../ethernet/microchip/vcap/vcap_api_client.h | 5 +
> > 3 files changed, 431 insertions(+)
> >
> > diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c
> > b/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c
> > index 5ec005e636aa..dbd2c2c4d346 100644
> > --- a/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c
> > +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c
> > @@ -22,6 +22,54 @@
> >
> > #define SPARX5_IS2_LOOKUPS 4
> >
> > +/* IS2 port keyset selection control */
> > +
> > +/* IS2 non-ethernet traffic type keyset generation */
> > +enum vcap_is2_port_sel_noneth {
> > + VCAP_IS2_PS_NONETH_MAC_ETYPE,
> > + VCAP_IS2_PS_NONETH_CUSTOM_1,
> > + VCAP_IS2_PS_NONETH_CUSTOM_2,
> > + VCAP_IS2_PS_NONETH_NO_LOOKUP
> > +};
> > +
> > +/* IS2 IPv4 unicast traffic type keyset generation */
> > +enum vcap_is2_port_sel_ipv4_uc {
> > + VCAP_IS2_PS_IPV4_UC_MAC_ETYPE,
> > + VCAP_IS2_PS_IPV4_UC_IP4_TCP_UDP_OTHER,
> > + VCAP_IS2_PS_IPV4_UC_IP_7TUPLE,
> > +};
> > +
> > +/* IS2 IPv4 multicast traffic type keyset generation */
> > +enum vcap_is2_port_sel_ipv4_mc {
> > + VCAP_IS2_PS_IPV4_MC_MAC_ETYPE,
> > + VCAP_IS2_PS_IPV4_MC_IP4_TCP_UDP_OTHER,
> > + VCAP_IS2_PS_IPV4_MC_IP_7TUPLE,
> > + VCAP_IS2_PS_IPV4_MC_IP4_VID,
> > +};
> > +
> > +/* IS2 IPv6 unicast traffic type keyset generation */
> > +enum vcap_is2_port_sel_ipv6_uc {
> > + VCAP_IS2_PS_IPV6_UC_MAC_ETYPE,
> > + VCAP_IS2_PS_IPV6_UC_IP_7TUPLE,
> > + VCAP_IS2_PS_IPV6_UC_IP6_STD,
> > + VCAP_IS2_PS_IPV6_UC_IP4_TCP_UDP_OTHER,
> > +};
> > +
> > +/* IS2 IPv6 multicast traffic type keyset generation */
> > +enum vcap_is2_port_sel_ipv6_mc {
> > + VCAP_IS2_PS_IPV6_MC_MAC_ETYPE,
> > + VCAP_IS2_PS_IPV6_MC_IP_7TUPLE,
> > + VCAP_IS2_PS_IPV6_MC_IP6_VID,
> > + VCAP_IS2_PS_IPV6_MC_IP6_STD,
> > + VCAP_IS2_PS_IPV6_MC_IP4_TCP_UDP_OTHER,
> > +};
> > +
> > +/* IS2 ARP traffic type keyset generation */
> > +enum vcap_is2_port_sel_arp {
> > + VCAP_IS2_PS_ARP_MAC_ETYPE,
> > + VCAP_IS2_PS_ARP_ARP,
> > +};
> > +
> > static struct sparx5_vcap_inst {
> > enum vcap_type vtype; /* type of vcap */
> > int vinst; /* instance number within the same type */
> > @@ -58,6 +106,296 @@ static struct sparx5_vcap_inst {
> > },
> > };
> >
> > +/* Await the super VCAP completion of the current operation */
> > +static void sparx5_vcap_wait_super_update(struct sparx5 *sparx5)
> > +{
> > + u32 value;
> > +
> > + read_poll_timeout(spx5_rd, value,
> > + !VCAP_SUPER_CTRL_UPDATE_SHOT_GET(value), 500, 10000,
> > + false, sparx5, VCAP_SUPER_CTRL);
> > +}
> > +
> > +/* Initializing a VCAP address range: only IS2 for now */
> > +static void _sparx5_vcap_range_init(struct sparx5 *sparx5,
> > + struct vcap_admin *admin,
> > + u32 addr, u32 count)
> > +{
> > + u32 size = count - 1;
> > +
> > + spx5_wr(VCAP_SUPER_CFG_MV_NUM_POS_SET(0) |
> > + VCAP_SUPER_CFG_MV_SIZE_SET(size),
> > + sparx5, VCAP_SUPER_CFG);
> > + spx5_wr(VCAP_SUPER_CTRL_UPDATE_CMD_SET(VCAP_CMD_INITIALIZE) |
> > + VCAP_SUPER_CTRL_UPDATE_ENTRY_DIS_SET(0) |
> > + VCAP_SUPER_CTRL_UPDATE_ACTION_DIS_SET(0) |
> > + VCAP_SUPER_CTRL_UPDATE_CNT_DIS_SET(0) |
> > + VCAP_SUPER_CTRL_UPDATE_ADDR_SET(addr) |
> > + VCAP_SUPER_CTRL_CLEAR_CACHE_SET(true) |
> > + VCAP_SUPER_CTRL_UPDATE_SHOT_SET(true),
> > + sparx5, VCAP_SUPER_CTRL);
> > + sparx5_vcap_wait_super_update(sparx5);
> > +}
> > +
> > +/* Initializing VCAP rule data area */
> > +static void sparx5_vcap_block_init(struct sparx5 *sparx5,
> > + struct vcap_admin *admin)
> > +{
> > + _sparx5_vcap_range_init(sparx5, admin, admin->first_valid_addr,
> > + admin->last_valid_addr -
> > + admin->first_valid_addr);
> > +}
> > +
> > +/* Get the keyset name from the sparx5 VCAP model */
> > +static const char *sparx5_vcap_keyset_name(struct net_device *ndev,
> > + enum vcap_keyfield_set keyset)
> > +{
> > + struct sparx5_port *port = netdev_priv(ndev);
> > +
> > + return port->sparx5->vcap_ctrl->stats->keyfield_set_names[keyset];
> > +}
> > +
> > +/* Check if this is the first lookup of IS2 */
> > +static bool sparx5_vcap_is2_is_first_chain(struct vcap_rule *rule)
> > +{
> > + return (rule->vcap_chain_id >= SPARX5_VCAP_CID_IS2_L0 &&
> > + rule->vcap_chain_id < SPARX5_VCAP_CID_IS2_L1) ||
> > + ((rule->vcap_chain_id >= SPARX5_VCAP_CID_IS2_L2 &&
> > + rule->vcap_chain_id < SPARX5_VCAP_CID_IS2_L3));
> > +}
> > +
> > +/* Set the narrow range ingress port mask on a rule */
> > +static void sparx5_vcap_add_range_port_mask(struct vcap_rule *rule,
> > + struct net_device *ndev)
> > +{
> > + struct sparx5_port *port = netdev_priv(ndev);
> > + u32 port_mask;
> > + u32 range;
> > +
> > + range = port->portno / BITS_PER_TYPE(u32);
> > + /* Port bit set to match-any */
> > + port_mask = ~BIT(port->portno % BITS_PER_TYPE(u32));
> > + vcap_rule_add_key_u32(rule, VCAP_KF_IF_IGR_PORT_MASK_SEL, 0, 0xf);
> > + vcap_rule_add_key_u32(rule, VCAP_KF_IF_IGR_PORT_MASK_RNG, range, 0xf);
> > + vcap_rule_add_key_u32(rule, VCAP_KF_IF_IGR_PORT_MASK, 0, port_mask);
> > +}
> > +
> > +/* Set the wide range ingress port mask on a rule */
> > +static void sparx5_vcap_add_wide_port_mask(struct vcap_rule *rule,
> > + struct net_device *ndev)
> > +{
> > + struct sparx5_port *port = netdev_priv(ndev);
> > + struct vcap_u72_key port_mask;
> > + u32 range;
> > +
> > + /* Port bit set to match-any */
> > + memset(port_mask.value, 0, sizeof(port_mask.value));
> > + memset(port_mask.mask, 0xff, sizeof(port_mask.mask));
> > + range = port->portno / BITS_PER_BYTE;
> > + port_mask.mask[range] = ~BIT(port->portno % BITS_PER_BYTE);
> > + vcap_rule_add_key_u72(rule, VCAP_KF_IF_IGR_PORT_MASK, &port_mask);
> > +}
> > +
> > +/* API callback used for validating a field keyset (check the port keysets) */
> > +static enum vcap_keyfield_set
> > +sparx5_vcap_validate_keyset(struct net_device *ndev,
> > + struct vcap_admin *admin,
> > + struct vcap_rule *rule,
> > + struct vcap_keyset_list *kslist,
> > + u16 l3_proto)
> > +{
> > + if (!kslist || kslist->cnt == 0)
> > + return VCAP_KFS_NO_VALUE;
> > + /* for now just return whatever the API suggests */
> > + return kslist->keysets[0];
> > +}
> > +
> > +/* API callback used for adding default fields to a rule */
> > +static void sparx5_vcap_add_default_fields(struct net_device *ndev,
> > + struct vcap_admin *admin,
> > + struct vcap_rule *rule)
> > +{
> > + const struct vcap_field *field;
> > +
> > + field = vcap_lookup_keyfield(rule, VCAP_KF_IF_IGR_PORT_MASK);
> > + if (field && field->width == SPX5_PORTS)
> > + sparx5_vcap_add_wide_port_mask(rule, ndev);
> > + else if (field && field->width == BITS_PER_TYPE(u32))
> > + sparx5_vcap_add_range_port_mask(rule, ndev);
> > + else
> > + pr_err("%s:%d: %s: could not add an ingress port mask for: %s\n",
> > + __func__, __LINE__, netdev_name(ndev),
> > + sparx5_vcap_keyset_name(ndev, rule->keyset));
> > + /* add the lookup bit */
> > + if (sparx5_vcap_is2_is_first_chain(rule))
> > + vcap_rule_add_key_bit(rule, VCAP_KF_LOOKUP_FIRST_IS, VCAP_BIT_1);
> > + else
> > + vcap_rule_add_key_bit(rule, VCAP_KF_LOOKUP_FIRST_IS, VCAP_BIT_0);
> > +}
> > +
> > +/* API callback used for erasing the vcap cache area (not the register area) */
> > +static void sparx5_vcap_cache_erase(struct vcap_admin *admin)
> > +{
> > + memset(admin->cache.keystream, 0, STREAMSIZE);
> > + memset(admin->cache.maskstream, 0, STREAMSIZE);
> > + memset(admin->cache.actionstream, 0, STREAMSIZE);
> > + memset(&admin->cache.counter, 0, sizeof(admin->cache.counter));
> > +}
> > +
> > +/* API callback used for writing to the VCAP cache */
> > +static void sparx5_vcap_cache_write(struct net_device *ndev,
> > + struct vcap_admin *admin,
> > + enum vcap_selection sel,
> > + u32 start,
> > + u32 count)
> > +{
> > + struct sparx5_port *port = netdev_priv(ndev);
> > + struct sparx5 *sparx5 = port->sparx5;
> > + u32 *keystr, *mskstr, *actstr;
> > + int idx;
> > +
> > + keystr = &admin->cache.keystream[start];
> > + mskstr = &admin->cache.maskstream[start];
> > + actstr = &admin->cache.actionstream[start];
> > + switch (sel) {
> > + case VCAP_SEL_ENTRY:
> > + for (idx = 0; idx < count; ++idx) {
> > + /* Avoid 'match-off' by setting value & mask */
> > + spx5_wr(keystr[idx] & mskstr[idx], sparx5,
> > + VCAP_SUPER_VCAP_ENTRY_DAT(idx));
> > + spx5_wr(~mskstr[idx], sparx5,
> > + VCAP_SUPER_VCAP_MASK_DAT(idx));
> > + }
> > + break;
> > + case VCAP_SEL_ACTION:
> > + for (idx = 0; idx < count; ++idx)
> > + spx5_wr(actstr[idx], sparx5,
> > + VCAP_SUPER_VCAP_ACTION_DAT(idx));
> > + break;
> > + case VCAP_SEL_ALL:
> > + pr_err("%s:%d: cannot write all streams at once\n",
> > + __func__, __LINE__);
> > + break;
> > + default:
> > + break;
> > + }
> > +}
> > +
> > +/* API callback used for reading from the VCAP into the VCAP cache */
> > +static void sparx5_vcap_cache_read(struct net_device *ndev,
> > + struct vcap_admin *admin,
> > + enum vcap_selection sel, u32 start,
> > + u32 count)
> > +{
> > + /* this will be added later */
> > +}
> > +
> > +/* API callback used for initializing a VCAP address range */
> > +static void sparx5_vcap_range_init(struct net_device *ndev,
> > + struct vcap_admin *admin, u32 addr,
> > + u32 count)
> > +{
> > + struct sparx5_port *port = netdev_priv(ndev);
> > + struct sparx5 *sparx5 = port->sparx5;
> > +
> > + _sparx5_vcap_range_init(sparx5, admin, addr, count);
> > +}
> > +
> > +/* API callback used for updating the VCAP cache */
> > +static void sparx5_vcap_update(struct net_device *ndev,
> > + struct vcap_admin *admin, enum vcap_command cmd,
> > + enum vcap_selection sel, u32 addr)
> > +{
> > + struct sparx5_port *port = netdev_priv(ndev);
> > + struct sparx5 *sparx5 = port->sparx5;
> > + bool clear;
> > +
> > + clear = (cmd == VCAP_CMD_INITIALIZE);
> > + spx5_wr(VCAP_SUPER_CFG_MV_NUM_POS_SET(0) |
> > + VCAP_SUPER_CFG_MV_SIZE_SET(0), sparx5, VCAP_SUPER_CFG);
> > + spx5_wr(VCAP_SUPER_CTRL_UPDATE_CMD_SET(cmd) |
> > + VCAP_SUPER_CTRL_UPDATE_ENTRY_DIS_SET((VCAP_SEL_ENTRY & sel) == 0) |
> > + VCAP_SUPER_CTRL_UPDATE_ACTION_DIS_SET((VCAP_SEL_ACTION & sel) == 0) |
> > + VCAP_SUPER_CTRL_UPDATE_CNT_DIS_SET((VCAP_SEL_COUNTER & sel) == 0) |
> > + VCAP_SUPER_CTRL_UPDATE_ADDR_SET(addr) |
> > + VCAP_SUPER_CTRL_CLEAR_CACHE_SET(clear) |
> > + VCAP_SUPER_CTRL_UPDATE_SHOT_SET(true),
> > + sparx5, VCAP_SUPER_CTRL);
> > + sparx5_vcap_wait_super_update(sparx5);
> > +}
> > +
> > +/* API callback used for moving a block of rules in the VCAP */
> > +static void sparx5_vcap_move(struct net_device *ndev, struct vcap_admin *admin,
> > + u32 addr, int offset, int count)
> > +{
> > + /* this will be added later */
> > +}
> > +
> > +/* Provide port information via a callback interface */
> > +static int sparx5_port_info(struct net_device *ndev, enum vcap_type vtype,
> > + int (*pf)(void *out, int arg, const char *fmt, ...),
> > + void *out, int arg)
> > +{
> > + /* this will be added later */
> > + return 0;
> > +}
> > +
> > +/* API callback operations: only IS2 is supported for now */
> > +static struct vcap_operations sparx5_vcap_ops = {
> > + .validate_keyset = sparx5_vcap_validate_keyset,
> > + .add_default_fields = sparx5_vcap_add_default_fields,
> > + .cache_erase = sparx5_vcap_cache_erase,
> > + .cache_write = sparx5_vcap_cache_write,
> > + .cache_read = sparx5_vcap_cache_read,
> > + .init = sparx5_vcap_range_init,
> > + .update = sparx5_vcap_update,
> > + .move = sparx5_vcap_move,
> > + .port_info = sparx5_port_info,
> > +};
> > +
> > +/* Enable lookups per port and set the keyset generation: only IS2 for now */
> > +static void sparx5_vcap_port_key_selection(struct sparx5 *sparx5,
> > + struct vcap_admin *admin)
> > +{
> > + int portno, lookup;
> > + u32 keysel;
> > +
> > + /* enable all 4 lookups on all ports */
> > + for (portno = 0; portno < SPX5_PORTS; ++portno)
> > + spx5_wr(ANA_ACL_VCAP_S2_CFG_SEC_ENA_SET(0xf), sparx5,
> > + ANA_ACL_VCAP_S2_CFG(portno));
> > +
> > + /* all traffic types generate the MAC_ETYPE keyset for now in all
> > + * lookups on all ports
> > + */
> > + keysel = ANA_ACL_VCAP_S2_KEY_SEL_KEY_SEL_ENA_SET(true) |
> > + ANA_ACL_VCAP_S2_KEY_SEL_NON_ETH_KEY_SEL_SET(VCAP_IS2_PS_NONETH_MAC_ETYPE) |
> > + ANA_ACL_VCAP_S2_KEY_SEL_IP4_MC_KEY_SEL_SET(VCAP_IS2_PS_IPV4_MC_MAC_ETYPE) |
> > + ANA_ACL_VCAP_S2_KEY_SEL_IP4_UC_KEY_SEL_SET(VCAP_IS2_PS_IPV4_UC_MAC_ETYPE) |
> > + ANA_ACL_VCAP_S2_KEY_SEL_IP6_MC_KEY_SEL_SET(VCAP_IS2_PS_IPV6_MC_MAC_ETYPE) |
> > + ANA_ACL_VCAP_S2_KEY_SEL_IP6_UC_KEY_SEL_SET(VCAP_IS2_PS_IPV6_UC_MAC_ETYPE) |
> > + ANA_ACL_VCAP_S2_KEY_SEL_ARP_KEY_SEL_SET(VCAP_IS2_PS_ARP_MAC_ETYPE);
> > + for (lookup = 0; lookup < admin->lookups; ++lookup) {
> > + for (portno = 0; portno < SPX5_PORTS; ++portno) {
> > + spx5_wr(keysel, sparx5,
> > + ANA_ACL_VCAP_S2_KEY_SEL(portno, lookup));
> > + }
> > + }
> > +}
> > +
> > +/* Disable lookups per port and set the keyset generation: only IS2 for now */
> > +static void sparx5_vcap_port_key_deselection(struct sparx5 *sparx5,
> > + struct vcap_admin *admin)
> > +{
> > + int portno;
> > +
> > + for (portno = 0; portno < SPX5_PORTS; ++portno)
> > + spx5_rmw(ANA_ACL_VCAP_S2_CFG_SEC_ENA_SET(0),
> > + ANA_ACL_VCAP_S2_CFG_SEC_ENA,
> > + sparx5,
> > + ANA_ACL_VCAP_S2_CFG(portno));
> > +}
> > +
> > static void sparx5_vcap_admin_free(struct vcap_admin *admin)
> > {
> > if (!admin)
> > @@ -138,6 +476,7 @@ int sparx5_vcap_init(struct sparx5 *sparx5)
> > * - Lists of rules
> > * - Address information
> > * - Initialize VCAP blocks
> > + * - Configure port keysets
> > */
> > ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
> > if (!ctrl)
> > @@ -147,6 +486,8 @@ int sparx5_vcap_init(struct sparx5 *sparx5)
> > /* select the sparx5 VCAP model */
> > ctrl->vcaps = sparx5_vcaps;
> > ctrl->stats = &sparx5_vcap_stats;
> > + /* Setup callbacks to allow the API to use the VCAP HW */
> > + ctrl->ops = &sparx5_vcap_ops;
> >
> > INIT_LIST_HEAD(&ctrl->list);
> > for (idx = 0; idx < ARRAY_SIZE(sparx5_vcap_inst_cfg); ++idx) {
> > @@ -159,6 +500,9 @@ int sparx5_vcap_init(struct sparx5 *sparx5)
> > return err;
> > }
> > sparx5_vcap_block_alloc(sparx5, admin, cfg);
> > + sparx5_vcap_block_init(sparx5, admin);
> > + if (cfg->vinst == 0)
> > + sparx5_vcap_port_key_selection(sparx5, admin);
> > list_add_tail(&admin->list, &ctrl->list);
> > }
> >
> > @@ -174,6 +518,7 @@ void sparx5_vcap_destroy(struct sparx5 *sparx5)
> > return;
> >
> > list_for_each_entry_safe(admin, admin_next, &ctrl->list, list) {
> > + sparx5_vcap_port_key_deselection(sparx5, admin);
> > list_del(&admin->list);
> > sparx5_vcap_admin_free(admin);
> > }
> > diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api.c
> > b/drivers/net/ethernet/microchip/vcap/vcap_api.c
> > index aa6b451d79a6..d929d2d00b6c 100644
> > --- a/drivers/net/ethernet/microchip/vcap/vcap_api.c
> > +++ b/drivers/net/ethernet/microchip/vcap/vcap_api.c
> > @@ -21,6 +21,17 @@ struct vcap_rule_internal {
> > u32 addr; /* address in the VCAP at insertion */
> > };
> >
> > +/* Return the list of keyfields for the keyset */
> > +static const struct vcap_field *vcap_keyfields(struct vcap_control *vctrl,
> > + enum vcap_type vt,
> > + enum vcap_keyfield_set keyset)
> > +{
> > + /* Check that the keyset exists in the vcap keyset list */
> > + if (keyset >= vctrl->vcaps[vt].keyfield_set_size)
> > + return NULL;
> > + return vctrl->vcaps[vt].keyfield_set_map[keyset];
> > +}
> > +
> > /* Update the keyset for the rule */
> > int vcap_set_rule_set_keyset(struct vcap_rule *rule,
> > enum vcap_keyfield_set keyset)
> > @@ -227,6 +238,24 @@ int vcap_del_rule(struct vcap_control *vctrl, struct net_device *ndev, u32
> > id)
> > }
> > EXPORT_SYMBOL_GPL(vcap_del_rule);
> >
> > +/* Find information on a key field in a rule */
> > +const struct vcap_field *vcap_lookup_keyfield(struct vcap_rule *rule,
> > + enum vcap_key_field key)
> > +{
> > + struct vcap_rule_internal *ri = (struct vcap_rule_internal *)rule;
> > + enum vcap_keyfield_set keyset = rule->keyset;
> > + enum vcap_type vt = ri->admin->vtype;
> > + const struct vcap_field *fields;
> > +
> > + if (keyset == VCAP_KFS_NO_VALUE)
> > + return NULL;
> > + fields = vcap_keyfields(ri->vctrl, vt, keyset);
> > + if (!fields)
> > + return NULL;
> > + return &fields[key];
> > +}
> > +EXPORT_SYMBOL_GPL(vcap_lookup_keyfield);
> > +
> > static void vcap_copy_from_client_keyfield(struct vcap_rule *rule,
> > struct vcap_client_keyfield *field,
> > struct vcap_client_keyfield_data *data)
> > @@ -253,6 +282,47 @@ static int vcap_rule_add_key(struct vcap_rule *rule,
> > return 0;
> > }
> >
> > +static void vcap_rule_set_key_bitsize(struct vcap_u1_key *u1, enum vcap_bit val)
> > +{
> > + switch (val) {
> > + case VCAP_BIT_0:
> > + u1->value = 0;
> > + u1->mask = 1;
> > + break;
> > + case VCAP_BIT_1:
> > + u1->value = 1;
> > + u1->mask = 1;
> > + break;
> > + case VCAP_BIT_ANY:
> > + u1->value = 0;
> > + u1->mask = 0;
> > + break;
> > + }
> > +}
> > +
> > +/* Add a bit key with value and mask to the rule */
> > +int vcap_rule_add_key_bit(struct vcap_rule *rule, enum vcap_key_field key,
> > + enum vcap_bit val)
> > +{
> > + struct vcap_client_keyfield_data data;
> > +
> > + vcap_rule_set_key_bitsize(&data.u1, val);
> > + return vcap_rule_add_key(rule, key, VCAP_FIELD_BIT, &data);
> > +}
> > +EXPORT_SYMBOL_GPL(vcap_rule_add_key_bit);
> > +
> > +/* Add a 32 bit key field with value and mask to the rule */
> > +int vcap_rule_add_key_u32(struct vcap_rule *rule, enum vcap_key_field key,
> > + u32 value, u32 mask)
> > +{
> > + struct vcap_client_keyfield_data data;
> > +
> > + data.u32.value = value;
> > + data.u32.mask = mask;
> > + return vcap_rule_add_key(rule, key, VCAP_FIELD_U32, &data);
> > +}
> > +EXPORT_SYMBOL_GPL(vcap_rule_add_key_u32);
> > +
> > /* Add a 48 bit key with value and mask to the rule */
> > int vcap_rule_add_key_u48(struct vcap_rule *rule, enum vcap_key_field key,
> > struct vcap_u48_key *fieldval)
> > @@ -264,6 +334,17 @@ int vcap_rule_add_key_u48(struct vcap_rule *rule, enum vcap_key_field key,
> > }
> > EXPORT_SYMBOL_GPL(vcap_rule_add_key_u48);
> >
> > +/* Add a 72 bit key with value and mask to the rule */
> > +int vcap_rule_add_key_u72(struct vcap_rule *rule, enum vcap_key_field key,
> > + struct vcap_u72_key *fieldval)
> > +{
> > + struct vcap_client_keyfield_data data;
> > +
> > + memcpy(&data.u72, fieldval, sizeof(data.u72));
> > + return vcap_rule_add_key(rule, key, VCAP_FIELD_U72, &data);
> > +}
> > +EXPORT_SYMBOL_GPL(vcap_rule_add_key_u72);
> > +
> > static void vcap_copy_from_client_actionfield(struct vcap_rule *rule,
> > struct vcap_client_actionfield *field,
> > struct vcap_client_actionfield_data *data)
> > diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api_client.h
> > b/drivers/net/ethernet/microchip/vcap/vcap_api_client.h
> > index 2c4fd9d022f9..b0a2eae81dbe 100644
> > --- a/drivers/net/ethernet/microchip/vcap/vcap_api_client.h
> > +++ b/drivers/net/ethernet/microchip/vcap/vcap_api_client.h
> > @@ -173,6 +173,8 @@ int vcap_rule_add_key_u32(struct vcap_rule *rule, enum vcap_key_field key,
> > u32 value, u32 mask);
> > int vcap_rule_add_key_u48(struct vcap_rule *rule, enum vcap_key_field key,
> > struct vcap_u48_key *fieldval);
> > +int vcap_rule_add_key_u72(struct vcap_rule *rule, enum vcap_key_field key,
> > + struct vcap_u72_key *fieldval);
> > int vcap_rule_add_action_bit(struct vcap_rule *rule,
> > enum vcap_action_field action, enum vcap_bit val);
> > int vcap_rule_add_action_u32(struct vcap_rule *rule,
> > @@ -181,6 +183,9 @@ int vcap_rule_add_action_u32(struct vcap_rule *rule,
> > /* VCAP lookup operations */
> > /* Lookup a vcap instance using chain id */
> > struct vcap_admin *vcap_find_admin(struct vcap_control *vctrl, int cid);
> > +/* Find information on a key field in a rule */
> > +const struct vcap_field *vcap_lookup_keyfield(struct vcap_rule *rule,
> > + enum vcap_key_field key);
> > /* Find a rule id with a provided cookie */
> > int vcap_lookup_rule_by_cookie(struct vcap_control *vctrl, u64 cookie);
> >
> > --
> > 2.38.1
> >
>
> Tested on Microchip PCB135 switch.
>
> Tested-by: Casper Andersson <casper.casan@...il.com>
> Reviewed-by: Casper Andersson <casper.casan@...il.com>
>
Great that you did a test round this early.
BR
Steen
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