[PATCH net-next] net: lan966x: Add VCAP debugFS support
From: Horatiu Vultur
Date: Thu Feb 02 2023 - 09:55:21 EST
Enable debugfs for vcap for lan966x. This will allow to print all the
entries in the VCAP and also the port information regarding which keys
are configured.
Signed-off-by: Horatiu Vultur <horatiu.vultur@xxxxxxxxxxxxx>
---
.../net/ethernet/microchip/lan966x/Makefile | 2 +
.../ethernet/microchip/lan966x/lan966x_main.c | 4 +
.../ethernet/microchip/lan966x/lan966x_main.h | 26 +++++
.../microchip/lan966x/lan966x_vcap_debugfs.c | 94 +++++++++++++++++++
.../microchip/lan966x/lan966x_vcap_impl.c | 26 ++---
5 files changed, 136 insertions(+), 16 deletions(-)
create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_vcap_debugfs.c
diff --git a/drivers/net/ethernet/microchip/lan966x/Makefile b/drivers/net/ethernet/microchip/lan966x/Makefile
index 56afd694f3c78..7b0cda4ffa6b5 100644
--- a/drivers/net/ethernet/microchip/lan966x/Makefile
+++ b/drivers/net/ethernet/microchip/lan966x/Makefile
@@ -15,5 +15,7 @@ lan966x-switch-objs := lan966x_main.o lan966x_phylink.o lan966x_port.o \
lan966x_xdp.o lan966x_vcap_impl.o lan966x_vcap_ag_api.o \
lan966x_tc_flower.o lan966x_goto.o
+lan966x-switch-$(CONFIG_DEBUG_FS) += lan966x_vcap_debugfs.o
+
# Provide include files
ccflags-y += -I$(srctree)/drivers/net/ethernet/microchip/vcap
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
index 580c91d24a528..47b37ab9d7d5e 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
@@ -1035,6 +1035,8 @@ static int lan966x_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, lan966x);
lan966x->dev = &pdev->dev;
+ lan966x->debugfs_root = debugfs_create_dir("lan966x", NULL);
+
if (!device_get_mac_address(&pdev->dev, mac_addr)) {
ether_addr_copy(lan966x->base_mac, mac_addr);
} else {
@@ -1223,6 +1225,8 @@ static int lan966x_remove(struct platform_device *pdev)
lan966x_fdb_deinit(lan966x);
lan966x_ptp_deinit(lan966x);
+ debugfs_remove_recursive(lan966x->debugfs_root);
+
return 0;
}
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
index 26646ca5929d1..49f5159afbf30 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
@@ -3,6 +3,7 @@
#ifndef __LAN966X_MAIN_H__
#define __LAN966X_MAIN_H__
+#include <linux/debugfs.h>
#include <linux/etherdevice.h>
#include <linux/if_vlan.h>
#include <linux/jiffies.h>
@@ -14,6 +15,9 @@
#include <net/pkt_sched.h>
#include <net/switchdev.h>
+#include <vcap_api.h>
+#include <vcap_api_client.h>
+
#include "lan966x_regs.h"
#include "lan966x_ifh.h"
@@ -128,6 +132,13 @@ enum LAN966X_PORT_MASK_MODE {
LAN966X_PMM_REDIRECT,
};
+enum vcap_is2_port_sel_ipv6 {
+ VCAP_IS2_PS_IPV6_TCPUDP_OTHER,
+ VCAP_IS2_PS_IPV6_STD,
+ VCAP_IS2_PS_IPV6_IP4_TCPUDP_IP4_OTHER,
+ VCAP_IS2_PS_IPV6_MAC_ETYPE,
+};
+
struct lan966x_port;
struct lan966x_db {
@@ -315,6 +326,9 @@ struct lan966x {
/* vcap */
struct vcap_control *vcap_ctrl;
+
+ /* debugfs */
+ struct dentry *debugfs_root;
};
struct lan966x_port_config {
@@ -601,6 +615,18 @@ static inline bool lan966x_xdp_port_present(struct lan966x_port *port)
int lan966x_vcap_init(struct lan966x *lan966x);
void lan966x_vcap_deinit(struct lan966x *lan966x);
+#if defined(CONFIG_DEBUG_FS)
+int lan966x_vcap_port_info(struct net_device *dev,
+ struct vcap_admin *admin,
+ struct vcap_output_print *out);
+#else
+static inline int lan966x_vcap_port_info(struct net_device *dev,
+ struct vcap_admin *admin,
+ struct vcap_output_print *out)
+{
+ return 0;
+}
+#endif
int lan966x_tc_flower(struct lan966x_port *port,
struct flow_cls_offload *f,
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_vcap_debugfs.c b/drivers/net/ethernet/microchip/lan966x/lan966x_vcap_debugfs.c
new file mode 100644
index 0000000000000..7a0db58f55136
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_vcap_debugfs.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "lan966x_main.h"
+#include "lan966x_vcap_ag_api.h"
+#include "vcap_api.h"
+#include "vcap_api_client.h"
+
+static void lan966x_vcap_port_keys(struct lan966x_port *port,
+ struct vcap_admin *admin,
+ struct vcap_output_print *out)
+{
+ struct lan966x *lan966x = port->lan966x;
+ u32 val;
+
+ out->prf(out->dst, " port[%d] (%s): ", port->chip_port,
+ netdev_name(port->dev));
+
+ val = lan_rd(lan966x, ANA_VCAP_S2_CFG(port->chip_port));
+ out->prf(out->dst, "\n state: ");
+ if (ANA_VCAP_S2_CFG_ENA_GET(val))
+ out->prf(out->dst, "on");
+ else
+ out->prf(out->dst, "off");
+
+ for (int l = 0; l < admin->lookups; ++l) {
+ out->prf(out->dst, "\n Lookup %d: ", l);
+
+ out->prf(out->dst, "\n snap: ");
+ if (ANA_VCAP_S2_CFG_SNAP_DIS_GET(val) & (BIT(0) << l))
+ out->prf(out->dst, "mac_llc");
+ else
+ out->prf(out->dst, "mac_snap");
+
+ out->prf(out->dst, "\n oam: ");
+ if (ANA_VCAP_S2_CFG_OAM_DIS_GET(val) & (BIT(0) << l))
+ out->prf(out->dst, "mac_etype");
+ else
+ out->prf(out->dst, "mac_oam");
+
+ out->prf(out->dst, "\n arp: ");
+ if (ANA_VCAP_S2_CFG_ARP_DIS_GET(val) & (BIT(0) << l))
+ out->prf(out->dst, "mac_etype");
+ else
+ out->prf(out->dst, "mac_arp");
+
+ out->prf(out->dst, "\n ipv4_other: ");
+ if (ANA_VCAP_S2_CFG_IP_OTHER_DIS_GET(val) & (BIT(0) << l))
+ out->prf(out->dst, "mac_etype");
+ else
+ out->prf(out->dst, "ip4_other");
+
+ out->prf(out->dst, "\n ipv4_tcp_udp: ");
+ if (ANA_VCAP_S2_CFG_IP_TCPUDP_DIS_GET(val) & (BIT(0) << l))
+ out->prf(out->dst, "mac_etype");
+ else
+ out->prf(out->dst, "ipv4_tcp_udp");
+
+ out->prf(out->dst, "\n ipv6: ");
+ switch (ANA_VCAP_S2_CFG_IP6_CFG_GET(val) & (0x3 << l)) {
+ case VCAP_IS2_PS_IPV6_TCPUDP_OTHER:
+ out->prf(out->dst, "ipv6_tcp_udp ipv6_tcp_udp");
+ break;
+ case VCAP_IS2_PS_IPV6_STD:
+ out->prf(out->dst, "ipv6_std");
+ break;
+ case VCAP_IS2_PS_IPV6_IP4_TCPUDP_IP4_OTHER:
+ out->prf(out->dst, "ipv4_tcp_udp ipv4_tcp_udp");
+ break;
+ case VCAP_IS2_PS_IPV6_MAC_ETYPE:
+ out->prf(out->dst, "mac_etype");
+ break;
+ }
+ }
+
+ out->prf(out->dst, "\n");
+}
+
+int lan966x_vcap_port_info(struct net_device *dev,
+ struct vcap_admin *admin,
+ struct vcap_output_print *out)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ struct lan966x *lan966x = port->lan966x;
+ const struct vcap_info *vcap;
+ struct vcap_control *vctrl;
+
+ vctrl = lan966x->vcap_ctrl;
+ vcap = &vctrl->vcaps[admin->vtype];
+
+ out->prf(out->dst, "%s:\n", vcap->name);
+ lan966x_vcap_port_keys(port, admin, out);
+
+ return 0;
+}
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.c b/drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.c
index 72fbbf49a4a74..68f9d69fd37b6 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.c
@@ -4,18 +4,12 @@
#include "lan966x_vcap_ag_api.h"
#include "vcap_api.h"
#include "vcap_api_client.h"
+#include "vcap_api_debugfs.h"
#define STREAMSIZE (64 * 4)
#define LAN966X_IS2_LOOKUPS 2
-enum vcap_is2_port_sel_ipv6 {
- VCAP_IS2_PS_IPV6_TCPUDP_OTHER,
- VCAP_IS2_PS_IPV6_STD,
- VCAP_IS2_PS_IPV6_IP4_TCPUDP_IP4_OTHER,
- VCAP_IS2_PS_IPV6_MAC_ETYPE,
-};
-
static struct lan966x_vcap_inst {
enum vcap_type vtype; /* type of vcap */
int tgt_inst; /* hardware instance number */
@@ -385,13 +379,6 @@ static void lan966x_vcap_move(struct net_device *dev,
lan966x_vcap_wait_update(lan966x, admin->tgt_inst);
}
-static int lan966x_vcap_port_info(struct net_device *dev,
- struct vcap_admin *admin,
- struct vcap_output_print *out)
-{
- return 0;
-}
-
static struct vcap_operations lan966x_vcap_ops = {
.validate_keyset = lan966x_vcap_validate_keyset,
.add_default_fields = lan966x_vcap_add_default_fields,
@@ -486,6 +473,7 @@ int lan966x_vcap_init(struct lan966x *lan966x)
struct lan966x_vcap_inst *cfg;
struct vcap_control *ctrl;
struct vcap_admin *admin;
+ struct dentry *dir;
ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
if (!ctrl)
@@ -509,11 +497,17 @@ int lan966x_vcap_init(struct lan966x *lan966x)
list_add_tail(&admin->list, &ctrl->list);
}
- for (int p = 0; p < lan966x->num_phys_ports; ++p)
- if (lan966x->ports[p])
+ dir = vcap_debugfs(lan966x->dev, lan966x->debugfs_root, ctrl);
+ for (int p = 0; p < lan966x->num_phys_ports; ++p) {
+ if (lan966x->ports[p]) {
+ vcap_port_debugfs(lan966x->dev, dir, ctrl,
+ lan966x->ports[p]->dev);
+
lan_rmw(ANA_VCAP_S2_CFG_ENA_SET(true),
ANA_VCAP_S2_CFG_ENA, lan966x,
ANA_VCAP_S2_CFG(lan966x->ports[p]->chip_port));
+ }
+ }
lan966x->vcap_ctrl = ctrl;
--
2.38.0