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net/octeontx2: add TM dynamic topology update

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Add dynamic parent and shaper update callbacks that
can be used to change RR Quantum or PIR/CIR rate dynamically
post hierarchy commit. Dynamic parent update callback only
supports updating RR quantum of a given child with respect to
its parent. There is no support yet to change priority or parent
itself.

Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
Signed-off-by: Krzysztof Kanas <kkanas@marvell.com>
This commit is contained in:
Nithin Dabilpuram 2020-04-03 14:22:13 +05:30 committed by Ferruh Yigit
parent 1e25d57fae
commit 89d08a1ff8
1 changed files with 190 additions and 0 deletions
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190
drivers/net/octeontx2/otx2_tm.c
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@ -2237,6 +2237,194 @@ otx2_nix_tm_hierarchy_commit(struct rte_eth_dev *eth_dev,
return 0;
}
static int
otx2_nix_tm_node_shaper_update(struct rte_eth_dev *eth_dev,
uint32_t node_id,
uint32_t profile_id,
struct rte_tm_error *error)
{
struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
struct otx2_nix_tm_shaper_profile *profile = NULL;
struct otx2_mbox *mbox = dev->mbox;
struct otx2_nix_tm_node *tm_node;
struct nix_txschq_config *req;
uint8_t k;
int rc;
tm_node = nix_tm_node_search(dev, node_id, true);
if (!tm_node || nix_tm_is_leaf(dev, tm_node->lvl)) {
error->type = RTE_TM_ERROR_TYPE_NODE_ID;
error->message = "invalid node";
return -EINVAL;
}
if (profile_id == tm_node->params.shaper_profile_id)
return 0;
if (profile_id != RTE_TM_SHAPER_PROFILE_ID_NONE) {
profile = nix_tm_shaper_profile_search(dev, profile_id);
if (!profile) {
error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_ID;
error->message = "shaper profile ID not exist";
return -EINVAL;
}
}
tm_node->params.shaper_profile_id = profile_id;
/* Nothing to do if not yet committed */
if (!(dev->tm_flags & NIX_TM_COMMITTED))
return 0;
tm_node->flags &= ~NIX_TM_NODE_ENABLED;
/* Flush the specific node with SW_XOFF */
req = otx2_mbox_alloc_msg_nix_txschq_cfg(mbox);
req->lvl = tm_node->hw_lvl;
k = prepare_tm_sw_xoff(tm_node, true, req->reg, req->regval);
req->num_regs = k;
rc = send_tm_reqval(mbox, req, error);
if (rc)
return rc;
/* Update the PIR/CIR and clear SW XOFF */
req = otx2_mbox_alloc_msg_nix_txschq_cfg(mbox);
req->lvl = tm_node->hw_lvl;
k = prepare_tm_shaper_reg(tm_node, profile, req->reg, req->regval);
k += prepare_tm_sw_xoff(tm_node, false, &req->reg[k], &req->regval[k]);
req->num_regs = k;
rc = send_tm_reqval(mbox, req, error);
if (!rc)
tm_node->flags |= NIX_TM_NODE_ENABLED;
return rc;
}
static int
otx2_nix_tm_node_parent_update(struct rte_eth_dev *eth_dev,
uint32_t node_id, uint32_t new_parent_id,
uint32_t priority, uint32_t weight,
struct rte_tm_error *error)
{
struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
struct otx2_nix_tm_node *tm_node, *sibling;
struct otx2_nix_tm_node *new_parent;
struct nix_txschq_config *req;
uint8_t k;
int rc;
if (!(dev->tm_flags & NIX_TM_COMMITTED)) {
error->type = RTE_TM_ERROR_TYPE_UNSPECIFIED;
error->message = "hierarchy doesn't exist";
return -EINVAL;
}
tm_node = nix_tm_node_search(dev, node_id, true);
if (!tm_node) {
error->type = RTE_TM_ERROR_TYPE_NODE_ID;
error->message = "no such node";
return -EINVAL;
}
/* Parent id valid only for non root nodes */
if (tm_node->hw_lvl != dev->otx2_tm_root_lvl) {
new_parent = nix_tm_node_search(dev, new_parent_id, true);
if (!new_parent) {
error->type = RTE_TM_ERROR_TYPE_NODE_PARENT_NODE_ID;
error->message = "no such parent node";
return -EINVAL;
}
/* Current support is only for dynamic weight update */
if (tm_node->parent != new_parent ||
tm_node->priority != priority) {
error->type = RTE_TM_ERROR_TYPE_NODE_PARENT_NODE_ID;
error->message = "only weight update supported";
return -EINVAL;
}
}
/* Skip if no change */
if (tm_node->weight == weight)
return 0;
tm_node->weight = weight;
/* For leaf nodes, SQ CTX needs update */
if (nix_tm_is_leaf(dev, tm_node->lvl)) {
/* Update SQ quantum data on the fly */
rc = nix_sq_sched_data(dev, tm_node, true);
if (rc) {
error->type = RTE_TM_ERROR_TYPE_UNSPECIFIED;
error->message = "sq sched data update failed";
return rc;
}
} else {
/* XOFF Parent node */
req = otx2_mbox_alloc_msg_nix_txschq_cfg(dev->mbox);
req->lvl = tm_node->parent->hw_lvl;
req->num_regs = prepare_tm_sw_xoff(tm_node->parent, true,
req->reg, req->regval);
rc = send_tm_reqval(dev->mbox, req, error);
if (rc)
return rc;
/* XOFF this node and all other siblings */
req = otx2_mbox_alloc_msg_nix_txschq_cfg(dev->mbox);
req->lvl = tm_node->hw_lvl;
k = 0;
TAILQ_FOREACH(sibling, &dev->node_list, node) {
if (sibling->parent != tm_node->parent)
continue;
k += prepare_tm_sw_xoff(sibling, true, &req->reg[k],
&req->regval[k]);
}
req->num_regs = k;
rc = send_tm_reqval(dev->mbox, req, error);
if (rc)
return rc;
/* Update new weight for current node */
req = otx2_mbox_alloc_msg_nix_txschq_cfg(dev->mbox);
req->lvl = tm_node->hw_lvl;
req->num_regs = prepare_tm_sched_reg(dev, tm_node,
req->reg, req->regval);
rc = send_tm_reqval(dev->mbox, req, error);
if (rc)
return rc;
/* XON this node and all other siblings */
req = otx2_mbox_alloc_msg_nix_txschq_cfg(dev->mbox);
req->lvl = tm_node->hw_lvl;
k = 0;
TAILQ_FOREACH(sibling, &dev->node_list, node) {
if (sibling->parent != tm_node->parent)
continue;
k += prepare_tm_sw_xoff(sibling, false, &req->reg[k],
&req->regval[k]);
}
req->num_regs = k;
rc = send_tm_reqval(dev->mbox, req, error);
if (rc)
return rc;
/* XON Parent node */
req = otx2_mbox_alloc_msg_nix_txschq_cfg(dev->mbox);
req->lvl = tm_node->parent->hw_lvl;
req->num_regs = prepare_tm_sw_xoff(tm_node->parent, false,
req->reg, req->regval);
rc = send_tm_reqval(dev->mbox, req, error);
if (rc)
return rc;
}
return 0;
}
static int
otx2_nix_tm_node_stats_read(struct rte_eth_dev *eth_dev, uint32_t node_id,
struct rte_tm_node_stats *stats,
@ -2334,6 +2522,8 @@ const struct rte_tm_ops otx2_tm_ops = {
.node_resume = otx2_nix_tm_node_resume,
.hierarchy_commit = otx2_nix_tm_hierarchy_commit,
.node_shaper_update = otx2_nix_tm_node_shaper_update,
.node_parent_update = otx2_nix_tm_node_parent_update,
.node_stats_read = otx2_nix_tm_node_stats_read,
};