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path: root/drivers/net/ethernet/netronome/nfp/flower/qos_conf.c
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Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/flower/qos_conf.c')
-rw-r--r--drivers/net/ethernet/netronome/nfp/flower/qos_conf.c163
1 files changed, 162 insertions, 1 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/flower/qos_conf.c b/drivers/net/ethernet/netronome/nfp/flower/qos_conf.c
index 82422afa9f8b..0880a5d8e224 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/qos_conf.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/qos_conf.c
@@ -1,10 +1,162 @@
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2019 Netronome Systems, Inc. */
+#include <linux/math64.h>
#include <net/pkt_cls.h>
+#include <net/pkt_sched.h>
#include "cmsg.h"
#include "main.h"
+#include "../nfp_port.h"
+
+struct nfp_police_cfg_head {
+ __be32 flags_opts;
+ __be32 port;
+};
+
+/* Police cmsg for configuring a trTCM traffic conditioner (8W/32B)
+ * See RFC 2698 for more details.
+ * ----------------------------------------------------------------
+ * 3 2 1
+ * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Flag options |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Port Ingress |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Token Bucket Peak |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Token Bucket Committed |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Peak Burst Size |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Committed Burst Size |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Peak Information Rate |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Committed Information Rate |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+struct nfp_police_config {
+ struct nfp_police_cfg_head head;
+ __be32 bkt_tkn_p;
+ __be32 bkt_tkn_c;
+ __be32 pbs;
+ __be32 cbs;
+ __be32 pir;
+ __be32 cir;
+};
+
+static int
+nfp_flower_install_rate_limiter(struct nfp_app *app, struct net_device *netdev,
+ struct tc_cls_matchall_offload *flow,
+ struct netlink_ext_ack *extack)
+{
+ struct flow_action_entry *action = &flow->rule->action.entries[0];
+ struct nfp_flower_repr_priv *repr_priv;
+ struct nfp_police_config *config;
+ struct nfp_repr *repr;
+ struct sk_buff *skb;
+ u32 netdev_port_id;
+ u64 burst, rate;
+
+ if (!nfp_netdev_is_nfp_repr(netdev)) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on higher level port");
+ return -EOPNOTSUPP;
+ }
+ repr = netdev_priv(netdev);
+
+ if (tcf_block_shared(flow->common.block)) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on shared blocks");
+ return -EOPNOTSUPP;
+ }
+
+ if (repr->port->type != NFP_PORT_VF_PORT) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on non-VF ports");
+ return -EOPNOTSUPP;
+ }
+
+ if (!flow_offload_has_one_action(&flow->rule->action)) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload requires a single action");
+ return -EOPNOTSUPP;
+ }
+
+ if (flow->common.prio != (1 << 16)) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload requires highest priority");
+ return -EOPNOTSUPP;
+ }
+
+ if (action->id != FLOW_ACTION_POLICE) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload requires police action");
+ return -EOPNOTSUPP;
+ }
+
+ rate = action->police.rate_bytes_ps;
+ burst = div_u64(rate * PSCHED_NS2TICKS(action->police.burst),
+ PSCHED_TICKS_PER_SEC);
+ netdev_port_id = nfp_repr_get_port_id(netdev);
+
+ skb = nfp_flower_cmsg_alloc(repr->app, sizeof(struct nfp_police_config),
+ NFP_FLOWER_CMSG_TYPE_QOS_MOD, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ config = nfp_flower_cmsg_get_data(skb);
+ memset(config, 0, sizeof(struct nfp_police_config));
+ config->head.port = cpu_to_be32(netdev_port_id);
+ config->bkt_tkn_p = cpu_to_be32(burst);
+ config->bkt_tkn_c = cpu_to_be32(burst);
+ config->pbs = cpu_to_be32(burst);
+ config->cbs = cpu_to_be32(burst);
+ config->pir = cpu_to_be32(rate);
+ config->cir = cpu_to_be32(rate);
+ nfp_ctrl_tx(repr->app->ctrl, skb);
+
+ repr_priv = repr->app_priv;
+ repr_priv->qos_table.netdev_port_id = netdev_port_id;
+
+ return 0;
+}
+
+static int
+nfp_flower_remove_rate_limiter(struct nfp_app *app, struct net_device *netdev,
+ struct tc_cls_matchall_offload *flow,
+ struct netlink_ext_ack *extack)
+{
+ struct nfp_flower_repr_priv *repr_priv;
+ struct nfp_police_config *config;
+ struct nfp_repr *repr;
+ struct sk_buff *skb;
+ u32 netdev_port_id;
+
+ if (!nfp_netdev_is_nfp_repr(netdev)) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on higher level port");
+ return -EOPNOTSUPP;
+ }
+ repr = netdev_priv(netdev);
+
+ netdev_port_id = nfp_repr_get_port_id(netdev);
+ repr_priv = repr->app_priv;
+
+ if (!repr_priv->qos_table.netdev_port_id) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: cannot remove qos entry that does not exist");
+ return -EOPNOTSUPP;
+ }
+
+ skb = nfp_flower_cmsg_alloc(repr->app, sizeof(struct nfp_police_config),
+ NFP_FLOWER_CMSG_TYPE_QOS_DEL, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ /* Clear all qos associate data for this interface */
+ memset(&repr_priv->qos_table, 0, sizeof(struct nfp_fl_qos));
+ config = nfp_flower_cmsg_get_data(skb);
+ memset(config, 0, sizeof(struct nfp_police_config));
+ config->head.port = cpu_to_be32(netdev_port_id);
+ nfp_ctrl_tx(repr->app->ctrl, skb);
+
+ return 0;
+}
int nfp_flower_setup_qos_offload(struct nfp_app *app, struct net_device *netdev,
struct tc_cls_matchall_offload *flow)
@@ -17,5 +169,14 @@ int nfp_flower_setup_qos_offload(struct nfp_app *app, struct net_device *netdev,
return -EOPNOTSUPP;
}
- return -EOPNOTSUPP;
+ switch (flow->command) {
+ case TC_CLSMATCHALL_REPLACE:
+ return nfp_flower_install_rate_limiter(app, netdev, flow,
+ extack);
+ case TC_CLSMATCHALL_DESTROY:
+ return nfp_flower_remove_rate_limiter(app, netdev, flow,
+ extack);
+ default:
+ return -EOPNOTSUPP;
+ }
}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-19 20:04:41 +0200