Merge branch 'cxgb4-ch_ktls-updates-in-net-next'

Rohit Maheshwari says:

====================
cxgb4/ch_ktls: updates in net-next

This series of patches improves connections setup and statistics.

This series is broken down as follows:

Patch 1 fixes the handling of connection setup failure in HW. Driver
shouldn't return success to tls_dev_add, until HW returns success.

Patch 2 avoids the log flood.

Patch 3 adds ktls statistics at port level.

v1->v2:
- removed conn_up from all places.

v2->v3:
- Corrected timeout handling.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c

@@ -3527,6 +3527,10 @@ DEFINE_SHOW_ATTRIBUTE(meminfo);
 
 static int chcr_stats_show(struct seq_file *seq, void *v)
 {
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
+	struct ch_ktls_port_stats_debug *ktls_port;
+	int i = 0;
+#endif
 	struct adapter *adap = seq->private;
 
 	seq_puts(seq, "Chelsio Crypto Accelerator Stats \n");
@@ -3557,18 +3561,6 @@ static int chcr_stats_show(struct seq_file *seq, void *v)
 	seq_puts(seq, "\nChelsio KTLS Crypto Accelerator Stats\n");
 	seq_printf(seq, "Tx TLS offload refcount:          %20u\n",
 		   refcount_read(&adap->chcr_ktls.ktls_refcount));
-	seq_printf(seq, "Tx HW offload contexts added:     %20llu\n",
-		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_ctx));
-	seq_printf(seq, "Tx connection created:            %20llu\n",
-		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_connection_open));
-	seq_printf(seq, "Tx connection failed:             %20llu\n",
-		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_connection_fail));
-	seq_printf(seq, "Tx connection closed:             %20llu\n",
-		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_connection_close));
-	seq_printf(seq, "Packets passed for encryption :   %20llu\n",
-		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_encrypted_packets));
-	seq_printf(seq, "Bytes passed for encryption :     %20llu\n",
-		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_encrypted_bytes));
 	seq_printf(seq, "Tx records send:                  %20llu\n",
 		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_send_records));
 	seq_printf(seq, "Tx partial start of records:      %20llu\n",
@@ -3581,14 +3573,17 @@ static int chcr_stats_show(struct seq_file *seq, void *v)
 		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_complete_pkts));
 	seq_printf(seq, "TX trim pkts :                    %20llu\n",
 		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_trimmed_pkts));
-	seq_printf(seq, "Tx out of order packets:          %20llu\n",
-		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_ooo));
-	seq_printf(seq, "Tx drop pkts before HW offload:   %20llu\n",
-		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_skip_no_sync_data));
-	seq_printf(seq, "Tx drop not synced packets:       %20llu\n",
-		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_drop_no_sync_data));
-	seq_printf(seq, "Tx drop bypass req:               %20llu\n",
-		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_drop_bypass_req));
+	while (i < MAX_NPORTS) {
+		ktls_port = &adap->ch_ktls_stats.ktls_port[i];
+		seq_printf(seq, "Port %d\n", i);
+		seq_printf(seq, "Tx connection created:            %20llu\n",
+			   atomic64_read(&ktls_port->ktls_tx_connection_open));
+		seq_printf(seq, "Tx connection failed:             %20llu\n",
+			   atomic64_read(&ktls_port->ktls_tx_connection_fail));
+		seq_printf(seq, "Tx connection closed:             %20llu\n",
+			   atomic64_read(&ktls_port->ktls_tx_connection_close));
+		i++;
+	}
 #endif
 	return 0;
 }

drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c

@@ -117,14 +117,6 @@ static const char stats_strings[][ETH_GSTRING_LEN] = {
 	"vlan_insertions        ",
 	"gro_packets            ",
 	"gro_merged             ",
-};
-
-static char adapter_stats_strings[][ETH_GSTRING_LEN] = {
-	"db_drop                ",
-	"db_full                ",
-	"db_empty               ",
-	"write_coal_success     ",
-	"write_coal_fail        ",
 #if  IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 	"tx_tls_encrypted_packets",
 	"tx_tls_encrypted_bytes  ",
@@ -136,6 +128,14 @@ static char adapter_stats_strings[][ETH_GSTRING_LEN] = {
 #endif
 };
 
+static char adapter_stats_strings[][ETH_GSTRING_LEN] = {
+	"db_drop                ",
+	"db_full                ",
+	"db_empty               ",
+	"write_coal_success     ",
+	"write_coal_fail        ",
+};
+
 static char loopback_stats_strings[][ETH_GSTRING_LEN] = {
 	"-------Loopback----------- ",
 	"octets_ok              ",
@@ -257,14 +257,6 @@ struct queue_port_stats {
 	u64 vlan_ins;
 	u64 gro_pkts;
 	u64 gro_merged;
-};
-
-struct adapter_stats {
-	u64 db_drop;
-	u64 db_full;
-	u64 db_empty;
-	u64 wc_success;
-	u64 wc_fail;
 #if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 	u64 tx_tls_encrypted_packets;
 	u64 tx_tls_encrypted_bytes;
@@ -276,12 +268,23 @@ struct adapter_stats {
 #endif
 };
 
+struct adapter_stats {
+	u64 db_drop;
+	u64 db_full;
+	u64 db_empty;
+	u64 wc_success;
+	u64 wc_fail;
+};
+
 static void collect_sge_port_stats(const struct adapter *adap,
 				   const struct port_info *p,
 				   struct queue_port_stats *s)
 {
 	const struct sge_eth_txq *tx = &adap->sge.ethtxq[p->first_qset];
 	const struct sge_eth_rxq *rx = &adap->sge.ethrxq[p->first_qset];
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
+	const struct ch_ktls_port_stats_debug *ktls_stats;
+#endif
 	struct sge_eohw_txq *eohw_tx;
 	unsigned int i;
 
@@ -306,6 +309,21 @@ static void collect_sge_port_stats(const struct adapter *adap,
 			s->vlan_ins += eohw_tx->vlan_ins;
 		}
 	}
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
+	ktls_stats = &adap->ch_ktls_stats.ktls_port[p->port_id];
+	s->tx_tls_encrypted_packets =
+		atomic64_read(&ktls_stats->ktls_tx_encrypted_packets);
+	s->tx_tls_encrypted_bytes =
+		atomic64_read(&ktls_stats->ktls_tx_encrypted_bytes);
+	s->tx_tls_ctx = atomic64_read(&ktls_stats->ktls_tx_ctx);
+	s->tx_tls_ooo = atomic64_read(&ktls_stats->ktls_tx_ooo);
+	s->tx_tls_skip_no_sync_data =
+		atomic64_read(&ktls_stats->ktls_tx_skip_no_sync_data);
+	s->tx_tls_drop_no_sync_data =
+		atomic64_read(&ktls_stats->ktls_tx_drop_no_sync_data);
+	s->tx_tls_drop_bypass_req =
+		atomic64_read(&ktls_stats->ktls_tx_drop_bypass_req);
+#endif
 }
 
 static void collect_adapter_stats(struct adapter *adap, struct adapter_stats *s)

drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c

@@ -690,7 +690,7 @@ int cxgb4_set_ktls_feature(struct adapter *adap, bool enable)
 			 * ULD is/are already active, return failure.
 			 */
 			if (cxgb4_uld_in_use(adap)) {
-				dev_warn(adap->pdev_dev,
+				dev_dbg(adap->pdev_dev,
 					"ULD connections (tid/stid) active. Can't enable kTLS\n");
 				return -EINVAL;
 			}
@@ -699,7 +699,7 @@ int cxgb4_set_ktls_feature(struct adapter *adap, bool enable)
 			if (ret)
 				return ret;
 			refcount_set(&adap->chcr_ktls.ktls_refcount, 1);
-			pr_info("kTLS has been enabled. Restrictions placed on ULD support\n");
+			pr_debug("kTLS has been enabled. Restrictions placed on ULD support\n");
 		} else {
 			/* ktls settings already up, just increment refcount. */
 			refcount_inc(&adap->chcr_ktls.ktls_refcount);
@@ -716,7 +716,7 @@ int cxgb4_set_ktls_feature(struct adapter *adap, bool enable)
 					    0, 1, &params, &params);
 			if (ret)
 				return ret;
-			pr_info("kTLS is disabled. Restrictions on ULD support removed\n");
+			pr_debug("kTLS is disabled. Restrictions on ULD support removed\n");
 		}
 	}
 

drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h

@@ -44,6 +44,7 @@
 #include "cxgb4.h"
 
 #define MAX_ULD_QSETS 16
+#define MAX_ULD_NPORTS 4
 
 /* CPL message priority levels */
 enum {
@@ -365,17 +366,10 @@ struct cxgb4_virt_res {                      /* virtualized HW resources */
 };
 
 #if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
-struct ch_ktls_stats_debug {
+struct ch_ktls_port_stats_debug {
 	atomic64_t ktls_tx_connection_open;
 	atomic64_t ktls_tx_connection_fail;
 	atomic64_t ktls_tx_connection_close;
-	atomic64_t ktls_tx_send_records;
-	atomic64_t ktls_tx_end_pkts;
-	atomic64_t ktls_tx_start_pkts;
-	atomic64_t ktls_tx_middle_pkts;
-	atomic64_t ktls_tx_retransmit_pkts;
-	atomic64_t ktls_tx_complete_pkts;
-	atomic64_t ktls_tx_trimmed_pkts;
 	atomic64_t ktls_tx_encrypted_packets;
 	atomic64_t ktls_tx_encrypted_bytes;
 	atomic64_t ktls_tx_ctx;
@@ -384,6 +378,17 @@ struct ch_ktls_stats_debug {
 	atomic64_t ktls_tx_drop_no_sync_data;
 	atomic64_t ktls_tx_drop_bypass_req;
 };
+
+struct ch_ktls_stats_debug {
+	struct ch_ktls_port_stats_debug ktls_port[MAX_ULD_NPORTS];
+	atomic64_t ktls_tx_send_records;
+	atomic64_t ktls_tx_end_pkts;
+	atomic64_t ktls_tx_start_pkts;
+	atomic64_t ktls_tx_middle_pkts;
+	atomic64_t ktls_tx_retransmit_pkts;
+	atomic64_t ktls_tx_complete_pkts;
+	atomic64_t ktls_tx_trimmed_pkts;
+};
 #endif
 
 struct chcr_stats_debug {

drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.h

@@ -27,22 +27,20 @@
 #define CHCR_KTLS_WR_SIZE	(CHCR_PLAIN_TX_DATA_LEN +\
 				 sizeof(struct cpl_tx_sec_pdu))
 
-enum chcr_ktls_conn_state {
-	KTLS_CONN_CLOSED,
-	KTLS_CONN_ACT_OPEN_REQ,
-	KTLS_CONN_ACT_OPEN_RPL,
-	KTLS_CONN_SET_TCB_REQ,
-	KTLS_CONN_SET_TCB_RPL,
-	KTLS_CONN_TX_READY,
+enum ch_ktls_open_state {
+	CH_KTLS_OPEN_SUCCESS = 0,
+	CH_KTLS_OPEN_PENDING = 1,
+	CH_KTLS_OPEN_FAILURE = 2,
 };
 
 struct chcr_ktls_info {
 	struct sock *sk;
-	spinlock_t lock; /* state machine lock */
+	spinlock_t lock; /* lock for pending_close */
 	struct ktls_key_ctx key_ctx;
 	struct adapter *adap;
 	struct l2t_entry *l2te;
 	struct net_device *netdev;
+	struct completion completion;
 	u64 iv;
 	u64 record_no;
 	int tid;
@@ -58,13 +56,14 @@ struct chcr_ktls_info {
 	u32 tcp_start_seq_number;
 	u32 scmd0_short_seqno_numivs;
 	u32 scmd0_short_ivgen_hdrlen;
-	enum chcr_ktls_conn_state connection_state;
 	u16 prev_win;
 	u8 tx_chan;
 	u8 smt_idx;
 	u8 port_id;
 	u8 ip_family;
 	u8 first_qset;
+	enum ch_ktls_open_state open_state;
+	bool pending_close;
 };
 
 struct chcr_ktls_ofld_ctx_tx {