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Date: Wed, 12 Aug 2015 16:55:07 +0530
From: Hariprasad Shenai <hariprasad@...lsio.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, leedom@...lsio.com, nirranjan@...lsio.com,
Hariprasad Shenai <hariprasad@...lsio.com>
Subject: [PATCH net-next 4/4] cxgb4: Add debugfs support to dump tid info
Add debugfs support to dump tid info like stid, sftid, tids, atid and
hwtids
Signed-off-by: Hariprasad Shenai <hariprasad@...lsio.com>
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 68 ++++++++++++++++++++++
drivers/net/ethernet/chelsio/cxgb4/sge.c | 9 ++-
drivers/net/ethernet/chelsio/cxgb4/t4_regs.h | 4 ++
3 files changed, 76 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 15d58c3..ce075d1 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -2257,6 +2257,73 @@ static const struct file_operations mem_debugfs_fops = {
.llseek = default_llseek,
};
+static int tid_info_show(struct seq_file *seq, void *v)
+{
+ struct adapter *adap = seq->private;
+ const struct tid_info *t = &adap->tids;
+ enum chip_type chip = CHELSIO_CHIP_VERSION(adap->params.chip);
+
+ if (t4_read_reg(adap, LE_DB_CONFIG_A) & HASHEN_F) {
+ unsigned int sb;
+
+ if (chip <= CHELSIO_T5)
+ sb = t4_read_reg(adap, LE_DB_SERVER_INDEX_A) / 4;
+ else
+ sb = t4_read_reg(adap, LE_DB_SRVR_START_INDEX_A);
+
+ if (sb) {
+ seq_printf(seq, "TID range: 0..%u/%u..%u", sb - 1,
+ adap->tids.hash_base,
+ t->ntids - 1);
+ seq_printf(seq, ", in use: %u/%u\n",
+ atomic_read(&t->tids_in_use),
+ atomic_read(&t->hash_tids_in_use));
+ } else if (adap->flags & FW_OFLD_CONN) {
+ seq_printf(seq, "TID range: %u..%u/%u..%u",
+ t->aftid_base,
+ t->aftid_end,
+ adap->tids.hash_base,
+ t->ntids - 1);
+ seq_printf(seq, ", in use: %u/%u\n",
+ atomic_read(&t->tids_in_use),
+ atomic_read(&t->hash_tids_in_use));
+ } else {
+ seq_printf(seq, "TID range: %u..%u",
+ adap->tids.hash_base,
+ t->ntids - 1);
+ seq_printf(seq, ", in use: %u\n",
+ atomic_read(&t->hash_tids_in_use));
+ }
+ } else if (t->ntids) {
+ seq_printf(seq, "TID range: 0..%u", t->ntids - 1);
+ seq_printf(seq, ", in use: %u\n",
+ atomic_read(&t->tids_in_use));
+ }
+
+ if (t->nstids)
+ seq_printf(seq, "STID range: %u..%u, in use: %u\n",
+ (!t->stid_base &&
+ (chip <= CHELSIO_T5)) ?
+ t->stid_base + 1 : t->stid_base,
+ t->stid_base + t->nstids - 1, t->stids_in_use);
+ if (t->natids)
+ seq_printf(seq, "ATID range: 0..%u, in use: %u\n",
+ t->natids - 1, t->atids_in_use);
+ seq_printf(seq, "FTID range: %u..%u\n", t->ftid_base,
+ t->ftid_base + t->nftids - 1);
+ if (t->nsftids)
+ seq_printf(seq, "SFTID range: %u..%u in use: %u\n",
+ t->sftid_base, t->sftid_base + t->nsftids - 2,
+ t->sftids_in_use);
+ if (t->ntids)
+ seq_printf(seq, "HW TID usage: %u IP users, %u IPv6 users\n",
+ t4_read_reg(adap, LE_DB_ACT_CNT_IPV4_A),
+ t4_read_reg(adap, LE_DB_ACT_CNT_IPV6_A));
+ return 0;
+}
+
+DEFINE_SIMPLE_DEBUGFS_FILE(tid_info);
+
static void add_debugfs_mem(struct adapter *adap, const char *name,
unsigned int idx, unsigned int size_mb)
{
@@ -2670,6 +2737,7 @@ int t4_setup_debugfs(struct adapter *adap)
#if IS_ENABLED(CONFIG_IPV6)
{ "clip_tbl", &clip_tbl_debugfs_fops, S_IRUSR, 0 },
#endif
+ { "tids", &tid_info_debugfs_fops, S_IRUSR, 0},
{ "blocked_fl", &blocked_fl_fops, S_IRUSR | S_IWUSR, 0 },
{ "meminfo", &meminfo_fops, S_IRUSR, 0 },
};
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index d4248d7..78f446c 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -1424,18 +1424,17 @@ static void restart_ctrlq(unsigned long data)
struct fw_wr_hdr *wr;
unsigned int ndesc = skb->priority; /* previously saved */
- /*
- * Write descriptors and free skbs outside the lock to limit
+ written += ndesc;
+ /* Write descriptors and free skbs outside the lock to limit
* wait times. q->full is still set so new skbs will be queued.
*/
+ wr = (struct fw_wr_hdr *)&q->q.desc[q->q.pidx];
+ txq_advance(&q->q, ndesc);
spin_unlock(&q->sendq.lock);
- wr = (struct fw_wr_hdr *)&q->q.desc[q->q.pidx];
inline_tx_skb(skb, &q->q, wr);
kfree_skb(skb);
- written += ndesc;
- txq_advance(&q->q, ndesc);
if (unlikely(txq_avail(&q->q) < TXQ_STOP_THRES)) {
unsigned long old = q->q.stops;
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
index 365ebd5..4d2c929 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
@@ -2732,6 +2732,10 @@
#define T6_LIPMISS_F T6_LIPMISS_V(1U)
#define LE_DB_CONFIG_A 0x19c04
+#define LE_DB_SERVER_INDEX_A 0x19c18
+#define LE_DB_SRVR_START_INDEX_A 0x19c18
+#define LE_DB_ACT_CNT_IPV4_A 0x19c20
+#define LE_DB_ACT_CNT_IPV6_A 0x19c24
#define LE_DB_HASH_TID_BASE_A 0x19c30
#define LE_DB_HASH_TBL_BASE_ADDR_A 0x19c30
#define LE_DB_INT_CAUSE_A 0x19c3c
--
2.3.4
--
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