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Message-Id: <f10743c39acd854257a066f554f595a0cfa9f820.1473667613.git.rahul.lakkireddy@chelsio.com>
Date: Mon, 12 Sep 2016 13:42:36 +0530
From: Rahul Lakkireddy <rahul.lakkireddy@...lsio.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, hariprasad@...lsio.com, leedom@...lsio.com,
nirranjan@...lsio.com, indranil@...lsio.com,
Rahul Lakkireddy <rahul.lakkireddy@...lsio.com>
Subject: [PATCH net-next 3/7] cxgb4: add debugfs support to dump filter debug logs
Add debugfs support to dump filter debug information.
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@...lsio.com>
Signed-off-by: Hariprasad Shenai <hariprasad@...lsio.com>
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 4 +-
drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c | 415 +++++++++++++++++++++
drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.h | 2 +
drivers/net/ethernet/chelsio/cxgb4/t4_values.h | 5 +-
4 files changed, 424 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 91fb508..72cf3de2 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -1,7 +1,7 @@
/*
* This file is part of the Chelsio T4 Ethernet driver for Linux.
*
- * Copyright (c) 2003-2014 Chelsio Communications, Inc. All rights reserved.
+ * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -45,6 +45,7 @@
#include "cxgb4_debugfs.h"
#include "clip_tbl.h"
#include "l2t.h"
+#include "cxgb4_filter.h"
/* generic seq_file support for showing a table of size rows x width. */
static void *seq_tab_get_idx(struct seq_tab *tb, loff_t pos)
@@ -3272,6 +3273,7 @@ int t4_setup_debugfs(struct adapter *adap)
{ "tids", &tid_info_debugfs_fops, S_IRUSR, 0},
{ "blocked_fl", &blocked_fl_fops, S_IRUSR | S_IWUSR, 0 },
{ "meminfo", &meminfo_fops, S_IRUSR, 0 },
+ { "filters", &filters_debugfs_fops, S_IRUSR, 0 },
};
/* Debug FS nodes common to all T5 and later adapters.
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
index 490bd94..51b6745 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
@@ -34,6 +34,7 @@
#include "cxgb4.h"
#include "t4_regs.h"
+#include "t4_values.h"
#include "l2t.h"
#include "t4fw_api.h"
#include "cxgb4_filter.h"
@@ -669,3 +670,417 @@ void filter_rpl(struct adapter *adap, const struct cpl_set_tcb_rpl *rpl)
complete(&ctx->completion);
}
}
+
+/* Retrieve the packet count for the specified filter. */
+int cxgb4_get_filter_count(struct adapter *adapter, unsigned int fidx,
+ u64 *c, int hash, bool get_byte)
+{
+ struct filter_entry *f;
+ unsigned int tcb_base, tcbaddr;
+ unsigned int max_ftids;
+ int ret;
+
+ tcb_base = t4_read_reg(adapter, TP_CMM_TCB_BASE_A);
+ max_ftids = adapter->tids.nftids;
+ if ((fidx != (max_ftids + adapter->tids.nsftids - 1)) &&
+ (fidx >= max_ftids))
+ return -E2BIG;
+
+ f = &adapter->tids.ftid_tab[fidx];
+ if (!f->valid)
+ return -EINVAL;
+
+ tcbaddr = tcb_base + f->tid * TCB_SIZE;
+
+ if (is_t4(adapter->params.chip)) {
+ /* For T4, the Filter Packet Hit Count is maintained as a
+ * 64-bit Big Endian value in the TCB fields
+ * {t_rtt_ts_recent_age, t_rtseq_recent} ... The format in
+ * memory is swizzled/mapped in a manner such that instead
+ * of having this 64-bit counter show up at offset 24
+ * ((TCB_T_RTT_TS_RECENT_AGE_W == 6) * sizeof(u32)), it
+ * actually shows up at offset 16. Hence the constant "4"
+ * below instead of TCB_T_RTT_TS_RECENT_AGE_W.
+ */
+ if (get_byte) {
+ unsigned int word_offset = 4;
+ __be64 be64_byte_count;
+
+ spin_lock(&adapter->win0_lock);
+ ret = t4_memory_rw(adapter, MEMWIN_NIC, MEM_EDC0,
+ tcbaddr +
+ (word_offset * sizeof(__be32)),
+ sizeof(be64_byte_count),
+ &be64_byte_count,
+ T4_MEMORY_READ);
+ spin_unlock(&adapter->win0_lock);
+ if (ret < 0)
+ return ret;
+ *c = be64_to_cpu(be64_byte_count);
+ } else {
+ unsigned int word_offset = 4;
+ __be64 be64_count;
+
+ spin_lock(&adapter->win0_lock);
+ ret = t4_memory_rw(adapter, MEMWIN_NIC, MEM_EDC0,
+ tcbaddr +
+ (word_offset * sizeof(__be32)),
+ sizeof(be64_count),
+ (__be32 *)&be64_count,
+ T4_MEMORY_READ);
+ spin_unlock(&adapter->win0_lock);
+ if (ret < 0)
+ return ret;
+ *c = be64_to_cpu(be64_count);
+ }
+ } else {
+ /* For T5, the Filter Packet Hit Count is maintained as a
+ * 32-bit Big Endian value in the TCB field {timestamp}.
+ * Instead of the filter hit count showing up at offset 20
+ * ((TCB_TIMESTAMP_W == 5) * sizeof(u32)), it actually shows
+ * up at offset 24. Hence the constant "6" below.
+ */
+ if (get_byte) {
+ unsigned int word_offset = 4;
+ __be64 be64_byte_count;
+
+ spin_lock(&adapter->win0_lock);
+ ret = t4_memory_rw(adapter, MEMWIN_NIC, MEM_EDC0,
+ tcbaddr +
+ (word_offset * sizeof(__be32)),
+ sizeof(be64_byte_count),
+ &be64_byte_count,
+ T4_MEMORY_READ);
+ spin_unlock(&adapter->win0_lock);
+ if (ret < 0)
+ return ret;
+ *c = be64_to_cpu(be64_byte_count);
+ } else {
+ unsigned int word_offset = 6;
+ __be32 be32_count;
+
+ spin_lock(&adapter->win0_lock);
+ ret = t4_memory_rw(adapter, MEMWIN_NIC, MEM_EDC0,
+ tcbaddr +
+ (word_offset * sizeof(__be32)),
+ sizeof(be32_count), &be32_count,
+ T4_MEMORY_READ);
+ spin_unlock(&adapter->win0_lock);
+ if (ret < 0)
+ return ret;
+ *c = (u64)be32_to_cpu(be32_count);
+ }
+ }
+
+ return 0;
+}
+
+/* Filter Table. */
+static void filters_show_ipaddr(struct seq_file *seq,
+ int type, u8 *addr, u8 *addrm)
+{
+ int noctets, octet;
+
+ seq_puts(seq, " ");
+ if (type == 0) {
+ noctets = 4;
+ seq_printf(seq, "%48s", " ");
+ } else {
+ noctets = 16;
+ }
+
+ for (octet = 0; octet < noctets; octet++)
+ seq_printf(seq, "%02x", addr[octet]);
+ seq_puts(seq, "/");
+ for (octet = 0; octet < noctets; octet++)
+ seq_printf(seq, "%02x", addrm[octet]);
+}
+
+static void filters_display(struct seq_file *seq, unsigned int fidx,
+ struct filter_entry *f, int hash)
+{
+ struct adapter *adapter = seq->private;
+ u32 fconf = adapter->params.tp.vlan_pri_map;
+ u32 tpiconf = adapter->params.tp.ingress_config;
+ int i;
+
+ /* Filter index */
+ seq_printf(seq, "%4d%c%c", fidx,
+ (!f->locked ? ' ' : '!'),
+ (!f->pending ? ' ' : (!f->valid ? '+' : '-')));
+
+ if (f->fs.hitcnts) {
+ u64 hitcnt;
+ int ret;
+
+ ret = cxgb4_get_filter_count(adapter, fidx, &hitcnt,
+ hash, false);
+ if (ret)
+ seq_printf(seq, " %20s", "hits={ERROR}");
+ else
+ seq_printf(seq, " %20llu", hitcnt);
+ } else {
+ seq_printf(seq, " %20s", "Disabled");
+ }
+
+ /* Compressed header portion of filter. */
+ for (i = FT_FIRST_S; i <= FT_LAST_S; i++) {
+ switch (fconf & (1 << i)) {
+ case 0:
+ /* compressed filter field not enabled */
+ break;
+
+ case FCOE_F:
+ seq_printf(seq, " %1d/%1d",
+ f->fs.val.fcoe, f->fs.mask.fcoe);
+ break;
+
+ case PORT_F:
+ seq_printf(seq, " %1d/%1d",
+ f->fs.val.iport, f->fs.mask.iport);
+ break;
+
+ case VNIC_ID_F:
+ if ((tpiconf & VNIC_F) == 0)
+ seq_printf(seq, " %1d:%04x/%1d:%04x",
+ f->fs.val.ovlan_vld,
+ f->fs.val.ovlan,
+ f->fs.mask.ovlan_vld,
+ f->fs.mask.ovlan);
+ else
+ seq_printf(seq, " %1d:%1x:%02x/%1d:%1x:%02x",
+ f->fs.val.ovlan_vld,
+ (f->fs.val.ovlan >> 13) & 0x7,
+ f->fs.val.ovlan & 0x7f,
+ f->fs.mask.ovlan_vld,
+ (f->fs.mask.ovlan >> 13) & 0x7,
+ f->fs.mask.ovlan & 0x7f);
+ break;
+
+ case VLAN_F:
+ seq_printf(seq, " %1d:%04x/%1d:%04x",
+ f->fs.val.ivlan_vld,
+ f->fs.val.ivlan,
+ f->fs.mask.ivlan_vld,
+ f->fs.mask.ivlan);
+ break;
+
+ case TOS_F:
+ seq_printf(seq, " %02x/%02x",
+ f->fs.val.tos, f->fs.mask.tos);
+ break;
+
+ case PROTOCOL_F:
+ seq_printf(seq, " %02x/%02x",
+ f->fs.val.proto, f->fs.mask.proto);
+ break;
+
+ case ETHERTYPE_F:
+ seq_printf(seq, " %04x/%04x",
+ f->fs.val.ethtype, f->fs.mask.ethtype);
+ break;
+
+ case MACMATCH_F:
+ seq_printf(seq, " %03x/%03x",
+ f->fs.val.macidx, f->fs.mask.macidx);
+ break;
+
+ case MPSHITTYPE_F:
+ seq_printf(seq, " %1x/%1x",
+ f->fs.val.matchtype,
+ f->fs.mask.matchtype);
+ break;
+
+ case FRAGMENTATION_F:
+ seq_printf(seq, " %1d/%1d",
+ f->fs.val.frag, f->fs.mask.frag);
+ break;
+ }
+ }
+
+ /* Fixed portion of filter. */
+ filters_show_ipaddr(seq, f->fs.type,
+ f->fs.val.lip, f->fs.mask.lip);
+ filters_show_ipaddr(seq, f->fs.type,
+ f->fs.val.fip, f->fs.mask.fip);
+ seq_printf(seq, " %04x/%04x %04x/%04x",
+ f->fs.val.lport, f->fs.mask.lport,
+ f->fs.val.fport, f->fs.mask.fport);
+
+ /* Variable length filter action. */
+ if (f->fs.action == FILTER_DROP) {
+ seq_puts(seq, " Drop");
+ } else if (f->fs.action == FILTER_SWITCH) {
+ seq_printf(seq, " Switch: port=%d", f->fs.eport);
+ if (f->fs.newdmac)
+ seq_printf(seq,
+ ", dmac=%02x:%02x:%02x:%02x:%02x:%02x, l2tidx=%d",
+ f->fs.dmac[0], f->fs.dmac[1],
+ f->fs.dmac[2], f->fs.dmac[3],
+ f->fs.dmac[4], f->fs.dmac[5],
+ f->l2t->idx);
+ if (f->fs.newsmac)
+ seq_printf(seq,
+ ", smac=%02x:%02x:%02x:%02x:%02x:%02x, smtidx=%d",
+ f->fs.smac[0], f->fs.smac[1],
+ f->fs.smac[2], f->fs.smac[3],
+ f->fs.smac[4], f->fs.smac[5],
+ f->smtidx);
+ if (f->fs.newvlan == VLAN_REMOVE)
+ seq_puts(seq, ", vlan=none");
+ else if (f->fs.newvlan == VLAN_INSERT)
+ seq_printf(seq, ", vlan=insert(%x)",
+ f->fs.vlan);
+ else if (f->fs.newvlan == VLAN_REWRITE)
+ seq_printf(seq, ", vlan=rewrite(%x)",
+ f->fs.vlan);
+ } else {
+ seq_puts(seq, " Pass: Q=");
+ if (f->fs.dirsteer == 0) {
+ seq_puts(seq, "RSS");
+ if (f->fs.maskhash)
+ seq_puts(seq, "(TCB=hash)");
+ } else {
+ seq_printf(seq, "%d", f->fs.iq);
+ if (f->fs.dirsteerhash == 0)
+ seq_puts(seq, "(QID)");
+ else
+ seq_puts(seq, "(hash)");
+ }
+ }
+ if (f->fs.prio)
+ seq_puts(seq, " Prio");
+ if (f->fs.rpttid)
+ seq_puts(seq, " RptTID");
+ seq_puts(seq, "\n");
+}
+
+static int filters_show(struct seq_file *seq, void *v)
+{
+ struct adapter *adapter = seq->private;
+ u32 fconf = adapter->params.tp.vlan_pri_map;
+ u32 tpiconf = adapter->params.tp.ingress_config;
+ int i;
+
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(seq, "[[Legend: '!' => locked; '+' => pending set; '-' => pending clear]]\n");
+ seq_puts(seq, " Idx Hits");
+ for (i = FT_FIRST_S; i <= FT_LAST_S; i++) {
+ switch (fconf & (1 << i)) {
+ case 0:
+ /* compressed filter field not enabled */
+ break;
+
+ case FCOE_F:
+ seq_puts(seq, " FCoE");
+ break;
+
+ case PORT_F:
+ seq_puts(seq, " Port");
+ break;
+
+ case VNIC_ID_F:
+ if ((tpiconf & VNIC_F) == 0)
+ seq_puts(seq, " vld:oVLAN");
+ else
+ seq_puts(seq, " VFvld:PF:VF");
+ break;
+
+ case VLAN_F:
+ seq_puts(seq, " vld:iVLAN");
+ break;
+
+ case TOS_F:
+ seq_puts(seq, " TOS");
+ break;
+
+ case PROTOCOL_F:
+ seq_puts(seq, " Prot");
+ break;
+
+ case ETHERTYPE_F:
+ seq_puts(seq, " EthType");
+ break;
+
+ case MACMATCH_F:
+ seq_puts(seq, " MACIdx");
+ break;
+
+ case MPSHITTYPE_F:
+ seq_puts(seq, " MPS");
+ break;
+
+ case FRAGMENTATION_F:
+ seq_puts(seq, " Frag");
+ break;
+ }
+ }
+ seq_printf(seq, " %65s %65s %9s %9s %s\n",
+ "LIP", "FIP", "LPORT", "FPORT", "Action");
+ } else {
+ int fidx = (uintptr_t)v - 2;
+ struct filter_entry *f = &adapter->tids.ftid_tab[fidx];
+
+ /* if this entry isn't filled in just return */
+ if (!f->valid && !f->pending)
+ return 0;
+
+ filters_display(seq, fidx, f, 0);
+ }
+ return 0;
+}
+
+static inline void *filters_get_idx(struct adapter *adapter, loff_t pos)
+{
+ if (pos > (adapter->tids.nftids + adapter->tids.nsftids))
+ return NULL;
+
+ return (void *)(uintptr_t)(pos + 1);
+}
+
+static void *filters_start(struct seq_file *seq, loff_t *pos)
+{
+ struct adapter *adapter = seq->private;
+
+ return *pos ? filters_get_idx(adapter, *pos) : SEQ_START_TOKEN;
+}
+
+static void *filters_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ struct adapter *adapter = seq->private;
+
+ (*pos)++;
+ return filters_get_idx(adapter, *pos);
+}
+
+static void filters_stop(struct seq_file *seq, void *v)
+{
+}
+
+static const struct seq_operations filters_seq_ops = {
+ .start = filters_start,
+ .next = filters_next,
+ .stop = filters_stop,
+ .show = filters_show
+};
+
+int filters_open(struct inode *inode, struct file *file)
+{
+ struct adapter *adapter = inode->i_private;
+ int res;
+
+ res = seq_open(file, &filters_seq_ops);
+ if (!res) {
+ struct seq_file *seq = file->private_data;
+
+ seq->private = adapter;
+ }
+ return res;
+}
+
+const struct file_operations filters_debugfs_fops = {
+ .owner = THIS_MODULE,
+ .open = filters_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+};
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.h
index 23742cb..e801e0b 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.h
@@ -37,6 +37,8 @@
#include "t4_msg.h"
+extern const struct file_operations filters_debugfs_fops;
+
void filter_rpl(struct adapter *adap, const struct cpl_set_tcb_rpl *rpl);
void clear_filter(struct adapter *adap, struct filter_entry *f);
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_values.h b/drivers/net/ethernet/chelsio/cxgb4/t4_values.h
index 36cf307..0115222 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_values.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_values.h
@@ -1,7 +1,7 @@
/*
* This file is part of the Chelsio T4 Ethernet driver for Linux.
*
- * Copyright (c) 2003-2014 Chelsio Communications, Inc. All rights reserved.
+ * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@@ -121,6 +121,9 @@
* selects for a particular field being present. These fields, when present
* in the Compressed Filter Tuple, have the following widths in bits.
*/
+#define FT_FIRST_S FCOE_S
+#define FT_LAST_S FRAGMENTATION_S
+
#define FT_FCOE_W 1
#define FT_PORT_W 3
#define FT_VNIC_ID_W 17
--
2.5.3
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