Configure static ingress classification based on VLAN PCP field.
If the DPNI doesn't have enough traffic classes to accommodate all
priority levels, the lowest ones end up on TC 0 (default on miss).
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
priv->enqueue = dpaa2_eth_enqueue_qd;
}
+/* Configure ingress classification based on VLAN PCP */
+static int set_vlan_qos(struct dpaa2_eth_priv *priv)
+{
+ struct device *dev = priv->net_dev->dev.parent;
+ struct dpkg_profile_cfg kg_cfg = {0};
+ struct dpni_qos_tbl_cfg qos_cfg = {0};
+ struct dpni_rule_cfg key_params;
+ void *dma_mem, *key, *mask;
+ u8 key_size = 2; /* VLAN TCI field */
+ int i, pcp, err;
+
+ /* VLAN-based classification only makes sense if we have multiple
+ * traffic classes.
+ * Also, we need to extract just the 3-bit PCP field from the VLAN
+ * header and we can only do that by using a mask
+ */
+ if (dpaa2_eth_tc_count(priv) == 1 || !dpaa2_eth_fs_mask_enabled(priv)) {
+ dev_dbg(dev, "VLAN-based QoS classification not supported\n");
+ return -EOPNOTSUPP;
+ }
+
+ dma_mem = kzalloc(DPAA2_CLASSIFIER_DMA_SIZE, GFP_KERNEL);
+ if (!dma_mem)
+ return -ENOMEM;
+
+ kg_cfg.num_extracts = 1;
+ kg_cfg.extracts[0].type = DPKG_EXTRACT_FROM_HDR;
+ kg_cfg.extracts[0].extract.from_hdr.prot = NET_PROT_VLAN;
+ kg_cfg.extracts[0].extract.from_hdr.type = DPKG_FULL_FIELD;
+ kg_cfg.extracts[0].extract.from_hdr.field = NH_FLD_VLAN_TCI;
+
+ err = dpni_prepare_key_cfg(&kg_cfg, dma_mem);
+ if (err) {
+ dev_err(dev, "dpni_prepare_key_cfg failed\n");
+ goto out_free_tbl;
+ }
+
+ /* set QoS table */
+ qos_cfg.default_tc = 0;
+ qos_cfg.discard_on_miss = 0;
+ qos_cfg.key_cfg_iova = dma_map_single(dev, dma_mem,
+ DPAA2_CLASSIFIER_DMA_SIZE,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, qos_cfg.key_cfg_iova)) {
+ dev_err(dev, "QoS table DMA mapping failed\n");
+ err = -ENOMEM;
+ goto out_free_tbl;
+ }
+
+ err = dpni_set_qos_table(priv->mc_io, 0, priv->mc_token, &qos_cfg);
+ if (err) {
+ dev_err(dev, "dpni_set_qos_table failed\n");
+ goto out_unmap_tbl;
+ }
+
+ /* Add QoS table entries */
+ key = kzalloc(key_size * 2, GFP_KERNEL);
+ if (!key) {
+ err = -ENOMEM;
+ goto out_unmap_tbl;
+ }
+ mask = key + key_size;
+ *(__be16 *)mask = cpu_to_be16(VLAN_PRIO_MASK);
+
+ key_params.key_iova = dma_map_single(dev, key, key_size * 2,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, key_params.key_iova)) {
+ dev_err(dev, "Qos table entry DMA mapping failed\n");
+ err = -ENOMEM;
+ goto out_free_key;
+ }
+
+ key_params.mask_iova = key_params.key_iova + key_size;
+ key_params.key_size = key_size;
+
+ /* We add rules for PCP-based distribution starting with highest
+ * priority (VLAN PCP = 7). If this DPNI doesn't have enough traffic
+ * classes to accommodate all priority levels, the lowest ones end up
+ * on TC 0 which was configured as default
+ */
+ for (i = dpaa2_eth_tc_count(priv) - 1, pcp = 7; i >= 0; i--, pcp--) {
+ *(__be16 *)key = cpu_to_be16(pcp << VLAN_PRIO_SHIFT);
+ dma_sync_single_for_device(dev, key_params.key_iova,
+ key_size * 2, DMA_TO_DEVICE);
+
+ err = dpni_add_qos_entry(priv->mc_io, 0, priv->mc_token,
+ &key_params, i, i);
+ if (err) {
+ dev_err(dev, "dpni_add_qos_entry failed\n");
+ dpni_clear_qos_table(priv->mc_io, 0, priv->mc_token);
+ goto out_unmap_key;
+ }
+ }
+
+ priv->vlan_cls_enabled = true;
+
+ /* Table and key memory is not persistent, clean everything up after
+ * configuration is finished
+ */
+out_unmap_key:
+ dma_unmap_single(dev, key_params.key_iova, key_size * 2, DMA_TO_DEVICE);
+out_free_key:
+ kfree(key);
+out_unmap_tbl:
+ dma_unmap_single(dev, qos_cfg.key_cfg_iova, DPAA2_CLASSIFIER_DMA_SIZE,
+ DMA_TO_DEVICE);
+out_free_tbl:
+ kfree(dma_mem);
+
+ return err;
+}
+
/* Configure the DPNI object this interface is associated with */
static int setup_dpni(struct fsl_mc_device *ls_dev)
{
goto close;
}
+ err = set_vlan_qos(priv);
+ if (err && err != -EOPNOTSUPP)
+ goto close;
+
priv->cls_rules = devm_kzalloc(dev, sizeof(struct dpaa2_eth_cls_rule) *
dpaa2_eth_fs_count(priv), GFP_KERNEL);
if (!priv->cls_rules) {
u64 rx_cls_fields;
struct dpaa2_eth_cls_rule *cls_rules;
u8 rx_cls_enabled;
+ u8 vlan_cls_enabled;
struct bpf_prog *xdp_prog;
#ifdef CONFIG_DEBUG_FS
struct dpaa2_debugfs dbg;
#define DPNI_CMDID_SET_RX_TC_DIST DPNI_CMD(0x235)
+#define DPNI_CMDID_SET_QOS_TBL DPNI_CMD(0x240)
+#define DPNI_CMDID_ADD_QOS_ENT DPNI_CMD(0x241)
+#define DPNI_CMDID_REMOVE_QOS_ENT DPNI_CMD(0x242)
+#define DPNI_CMDID_CLR_QOS_TBL DPNI_CMD(0x243)
#define DPNI_CMDID_ADD_FS_ENT DPNI_CMD(0x244)
#define DPNI_CMDID_REMOVE_FS_ENT DPNI_CMD(0x245)
#define DPNI_CMDID_CLR_FS_ENT DPNI_CMD(0x246)
__le64 mask_iova;
};
+#define DPNI_DISCARD_ON_MISS_SHIFT 0
+#define DPNI_DISCARD_ON_MISS_SIZE 1
+
+struct dpni_cmd_set_qos_table {
+ __le32 pad;
+ u8 default_tc;
+ /* only the LSB */
+ u8 discard_on_miss;
+ __le16 pad1[21];
+ __le64 key_cfg_iova;
+};
+
+struct dpni_cmd_add_qos_entry {
+ __le16 pad;
+ u8 tc_id;
+ u8 key_size;
+ __le16 index;
+ __le16 pad1;
+ __le64 key_iova;
+ __le64 mask_iova;
+};
+
+struct dpni_cmd_remove_qos_entry {
+ u8 pad[3];
+ u8 key_size;
+ __le32 pad1;
+ __le64 key_iova;
+ __le64 mask_iova;
+};
+
#endif /* _FSL_DPNI_CMD_H */
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
}
+
+/**
+ * dpni_set_qos_table() - Set QoS mapping table
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPNI object
+ * @cfg: QoS table configuration
+ *
+ * This function and all QoS-related functions require that
+ *'max_tcs > 1' was set at DPNI creation.
+ *
+ * warning: Before calling this function, call dpkg_prepare_key_cfg() to
+ * prepare the key_cfg_iova parameter
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpni_set_qos_table(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ const struct dpni_qos_tbl_cfg *cfg)
+{
+ struct dpni_cmd_set_qos_table *cmd_params;
+ struct fsl_mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_QOS_TBL,
+ cmd_flags,
+ token);
+ cmd_params = (struct dpni_cmd_set_qos_table *)cmd.params;
+ cmd_params->default_tc = cfg->default_tc;
+ cmd_params->key_cfg_iova = cpu_to_le64(cfg->key_cfg_iova);
+ dpni_set_field(cmd_params->discard_on_miss, DISCARD_ON_MISS,
+ cfg->discard_on_miss);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpni_add_qos_entry() - Add QoS mapping entry (to select a traffic class)
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPNI object
+ * @cfg: QoS rule to add
+ * @tc_id: Traffic class selection (0-7)
+ * @index: Location in the QoS table where to insert the entry.
+ * Only relevant if MASKING is enabled for QoS classification on
+ * this DPNI, it is ignored for exact match.
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpni_add_qos_entry(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ const struct dpni_rule_cfg *cfg,
+ u8 tc_id,
+ u16 index)
+{
+ struct dpni_cmd_add_qos_entry *cmd_params;
+ struct fsl_mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPNI_CMDID_ADD_QOS_ENT,
+ cmd_flags,
+ token);
+ cmd_params = (struct dpni_cmd_add_qos_entry *)cmd.params;
+ cmd_params->tc_id = tc_id;
+ cmd_params->key_size = cfg->key_size;
+ cmd_params->index = cpu_to_le16(index);
+ cmd_params->key_iova = cpu_to_le64(cfg->key_iova);
+ cmd_params->mask_iova = cpu_to_le64(cfg->mask_iova);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpni_remove_qos_entry() - Remove QoS mapping entry
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPNI object
+ * @cfg: QoS rule to remove
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpni_remove_qos_entry(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ const struct dpni_rule_cfg *cfg)
+{
+ struct dpni_cmd_remove_qos_entry *cmd_params;
+ struct fsl_mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPNI_CMDID_REMOVE_QOS_ENT,
+ cmd_flags,
+ token);
+ cmd_params = (struct dpni_cmd_remove_qos_entry *)cmd.params;
+ cmd_params->key_size = cfg->key_size;
+ cmd_params->key_iova = cpu_to_le64(cfg->key_iova);
+ cmd_params->mask_iova = cpu_to_le64(cfg->mask_iova);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpni_clear_qos_table() - Clear all QoS mapping entries
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPNI object
+ *
+ * Following this function call, all frames are directed to
+ * the default traffic class (0)
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpni_clear_qos_table(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token)
+{
+ struct fsl_mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPNI_CMDID_CLR_QOS_TBL,
+ cmd_flags,
+ token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
u16 token,
const struct dpni_rx_dist_cfg *cfg);
+/**
+ * struct dpni_qos_tbl_cfg - Structure representing QOS table configuration
+ * @key_cfg_iova: I/O virtual address of 256 bytes DMA-able memory filled with
+ * key extractions to be used as the QoS criteria by calling
+ * dpkg_prepare_key_cfg()
+ * @discard_on_miss: Set to '1' to discard frames in case of no match (miss);
+ * '0' to use the 'default_tc' in such cases
+ * @default_tc: Used in case of no-match and 'discard_on_miss'= 0
+ */
+struct dpni_qos_tbl_cfg {
+ u64 key_cfg_iova;
+ int discard_on_miss;
+ u8 default_tc;
+};
+
+int dpni_set_qos_table(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ const struct dpni_qos_tbl_cfg *cfg);
+
/**
* enum dpni_dest - DPNI destination types
* @DPNI_DEST_NONE: Unassigned destination; The queue is set in parked mode and
u8 tc_id,
const struct dpni_rule_cfg *cfg);
+int dpni_add_qos_entry(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ const struct dpni_rule_cfg *cfg,
+ u8 tc_id,
+ u16 index);
+
+int dpni_remove_qos_entry(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ const struct dpni_rule_cfg *cfg);
+
+int dpni_clear_qos_table(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token);
+
int dpni_get_api_version(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 *major_ver,
projects / kernel.git / commitdiff