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net: airoha: Introduce PPE debugfs support
Similar to PPE support for Mediatek devices, introduce PPE debugfs in order to dump binded and unbinded flows. Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Lorenzo Bianconi
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Paolo Abeni
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Mar 4, 2025
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,181 @@ | ||
| // SPDX-License-Identifier: GPL-2.0-only | ||
| /* | ||
| * Copyright (c) 2025 AIROHA Inc | ||
| * Author: Lorenzo Bianconi <lorenzo@kernel.org> | ||
| */ | ||
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| #include "airoha_eth.h" | ||
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| static void airoha_debugfs_ppe_print_tuple(struct seq_file *m, | ||
| void *src_addr, void *dest_addr, | ||
| u16 *src_port, u16 *dest_port, | ||
| bool ipv6) | ||
| { | ||
| __be32 n_addr[IPV6_ADDR_WORDS]; | ||
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| if (ipv6) { | ||
| ipv6_addr_cpu_to_be32(n_addr, src_addr); | ||
| seq_printf(m, "%pI6", n_addr); | ||
| } else { | ||
| seq_printf(m, "%pI4h", src_addr); | ||
| } | ||
| if (src_port) | ||
| seq_printf(m, ":%d", *src_port); | ||
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| seq_puts(m, "->"); | ||
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| if (ipv6) { | ||
| ipv6_addr_cpu_to_be32(n_addr, dest_addr); | ||
| seq_printf(m, "%pI6", n_addr); | ||
| } else { | ||
| seq_printf(m, "%pI4h", dest_addr); | ||
| } | ||
| if (dest_port) | ||
| seq_printf(m, ":%d", *dest_port); | ||
| } | ||
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| static int airoha_ppe_debugfs_foe_show(struct seq_file *m, void *private, | ||
| bool bind) | ||
| { | ||
| static const char *const ppe_type_str[] = { | ||
| [PPE_PKT_TYPE_IPV4_HNAPT] = "IPv4 5T", | ||
| [PPE_PKT_TYPE_IPV4_ROUTE] = "IPv4 3T", | ||
| [PPE_PKT_TYPE_BRIDGE] = "L2B", | ||
| [PPE_PKT_TYPE_IPV4_DSLITE] = "DS-LITE", | ||
| [PPE_PKT_TYPE_IPV6_ROUTE_3T] = "IPv6 3T", | ||
| [PPE_PKT_TYPE_IPV6_ROUTE_5T] = "IPv6 5T", | ||
| [PPE_PKT_TYPE_IPV6_6RD] = "6RD", | ||
| }; | ||
| static const char *const ppe_state_str[] = { | ||
| [AIROHA_FOE_STATE_INVALID] = "INV", | ||
| [AIROHA_FOE_STATE_UNBIND] = "UNB", | ||
| [AIROHA_FOE_STATE_BIND] = "BND", | ||
| [AIROHA_FOE_STATE_FIN] = "FIN", | ||
| }; | ||
| struct airoha_ppe *ppe = m->private; | ||
| int i; | ||
|
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| for (i = 0; i < PPE_NUM_ENTRIES; i++) { | ||
| const char *state_str, *type_str = "UNKNOWN"; | ||
| void *src_addr = NULL, *dest_addr = NULL; | ||
| u16 *src_port = NULL, *dest_port = NULL; | ||
| struct airoha_foe_mac_info_common *l2; | ||
| unsigned char h_source[ETH_ALEN] = {}; | ||
| unsigned char h_dest[ETH_ALEN]; | ||
| struct airoha_foe_entry *hwe; | ||
| u32 type, state, ib2, data; | ||
| bool ipv6 = false; | ||
|
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| hwe = airoha_ppe_foe_get_entry(ppe, i); | ||
| if (!hwe) | ||
| continue; | ||
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| state = FIELD_GET(AIROHA_FOE_IB1_BIND_STATE, hwe->ib1); | ||
| if (!state) | ||
| continue; | ||
|
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| if (bind && state != AIROHA_FOE_STATE_BIND) | ||
| continue; | ||
|
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| state_str = ppe_state_str[state % ARRAY_SIZE(ppe_state_str)]; | ||
| type = FIELD_GET(AIROHA_FOE_IB1_BIND_PACKET_TYPE, hwe->ib1); | ||
| if (type < ARRAY_SIZE(ppe_type_str) && ppe_type_str[type]) | ||
| type_str = ppe_type_str[type]; | ||
|
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| seq_printf(m, "%05x %s %7s", i, state_str, type_str); | ||
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| switch (type) { | ||
| case PPE_PKT_TYPE_IPV4_HNAPT: | ||
| case PPE_PKT_TYPE_IPV4_DSLITE: | ||
| src_port = &hwe->ipv4.orig_tuple.src_port; | ||
| dest_port = &hwe->ipv4.orig_tuple.dest_port; | ||
| fallthrough; | ||
| case PPE_PKT_TYPE_IPV4_ROUTE: | ||
| src_addr = &hwe->ipv4.orig_tuple.src_ip; | ||
| dest_addr = &hwe->ipv4.orig_tuple.dest_ip; | ||
| break; | ||
| case PPE_PKT_TYPE_IPV6_ROUTE_5T: | ||
| src_port = &hwe->ipv6.src_port; | ||
| dest_port = &hwe->ipv6.dest_port; | ||
| fallthrough; | ||
| case PPE_PKT_TYPE_IPV6_ROUTE_3T: | ||
| case PPE_PKT_TYPE_IPV6_6RD: | ||
| src_addr = &hwe->ipv6.src_ip; | ||
| dest_addr = &hwe->ipv6.dest_ip; | ||
| ipv6 = true; | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
|
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| if (src_addr && dest_addr) { | ||
| seq_puts(m, " orig="); | ||
| airoha_debugfs_ppe_print_tuple(m, src_addr, dest_addr, | ||
| src_port, dest_port, ipv6); | ||
| } | ||
|
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| switch (type) { | ||
| case PPE_PKT_TYPE_IPV4_HNAPT: | ||
| case PPE_PKT_TYPE_IPV4_DSLITE: | ||
| src_port = &hwe->ipv4.new_tuple.src_port; | ||
| dest_port = &hwe->ipv4.new_tuple.dest_port; | ||
| fallthrough; | ||
| case PPE_PKT_TYPE_IPV4_ROUTE: | ||
| src_addr = &hwe->ipv4.new_tuple.src_ip; | ||
| dest_addr = &hwe->ipv4.new_tuple.dest_ip; | ||
| seq_puts(m, " new="); | ||
| airoha_debugfs_ppe_print_tuple(m, src_addr, dest_addr, | ||
| src_port, dest_port, | ||
| ipv6); | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
|
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| if (type >= PPE_PKT_TYPE_IPV6_ROUTE_3T) { | ||
| data = hwe->ipv6.data; | ||
| ib2 = hwe->ipv6.ib2; | ||
| l2 = &hwe->ipv6.l2; | ||
| } else { | ||
| data = hwe->ipv4.data; | ||
| ib2 = hwe->ipv4.ib2; | ||
| l2 = &hwe->ipv4.l2.common; | ||
| *((__be16 *)&h_source[4]) = | ||
| cpu_to_be16(hwe->ipv4.l2.src_mac_lo); | ||
| } | ||
|
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| *((__be32 *)h_dest) = cpu_to_be32(l2->dest_mac_hi); | ||
| *((__be16 *)&h_dest[4]) = cpu_to_be16(l2->dest_mac_lo); | ||
| *((__be32 *)h_source) = cpu_to_be32(l2->src_mac_hi); | ||
|
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| seq_printf(m, " eth=%pM->%pM etype=%04x data=%08x" | ||
| " vlan=%d,%d ib1=%08x ib2=%08x\n", | ||
| h_source, h_dest, l2->etype, data, | ||
| l2->vlan1, l2->vlan2, hwe->ib1, ib2); | ||
| } | ||
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| return 0; | ||
| } | ||
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| static int airoha_ppe_debugfs_foe_all_show(struct seq_file *m, void *private) | ||
| { | ||
| return airoha_ppe_debugfs_foe_show(m, private, false); | ||
| } | ||
| DEFINE_SHOW_ATTRIBUTE(airoha_ppe_debugfs_foe_all); | ||
|
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| static int airoha_ppe_debugfs_foe_bind_show(struct seq_file *m, void *private) | ||
| { | ||
| return airoha_ppe_debugfs_foe_show(m, private, true); | ||
| } | ||
| DEFINE_SHOW_ATTRIBUTE(airoha_ppe_debugfs_foe_bind); | ||
|
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| int airoha_ppe_debugfs_init(struct airoha_ppe *ppe) | ||
| { | ||
| ppe->debugfs_dir = debugfs_create_dir("ppe", NULL); | ||
| debugfs_create_file("entries", 0444, ppe->debugfs_dir, ppe, | ||
| &airoha_ppe_debugfs_foe_all_fops); | ||
| debugfs_create_file("bind", 0444, ppe->debugfs_dir, ppe, | ||
| &airoha_ppe_debugfs_foe_bind_fops); | ||
|
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| return 0; | ||
| } |