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cxgb4/chcr: Add ipv6 support and statistics 

Adding ipv6 support and ktls related statistics.

v1->v2:
- added blank lines at 2 places.

v3->v4:
- Replaced atomic_t with atomic64_t
- added few necessary stat counters.

Signed-off-by: Rohit Maheshwari <rohitm@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rohit Maheshwari 2020-03-07 20:06:08 +05:30 committed by David S. Miller
parent dc05f3df8f
commit 62370a4f34
4 changed files with 149 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
drivers/crypto/chelsio/chcr_ktls.c
View File

@ -3,6 +3,7 @@
#ifdef CONFIG_CHELSIO_TLS_DEVICE
#include "chcr_ktls.h"
#include "clip_tbl.h"
static int chcr_init_tcb_fields(struct chcr_ktls_info *tx_info);
/*
@ -153,8 +154,10 @@ static int chcr_ktls_update_connection_state(struct chcr_ktls_info *tx_info,
/* FALLTHRU */
case KTLS_CONN_SET_TCB_RPL:
/* Check if l2t state is valid, then move to ready state. */
if (cxgb4_check_l2t_valid(tx_info->l2te))
if (cxgb4_check_l2t_valid(tx_info->l2te)) {
tx_info->connection_state = KTLS_CONN_TX_READY;
atomic64_inc(&tx_info->adap->chcr_stats.ktls_tx_ctx);
}
break;
case KTLS_CONN_TX_READY:
@ -219,6 +222,56 @@ static int chcr_ktls_act_open_req(struct sock *sk,
return cxgb4_l2t_send(tx_info->netdev, skb, tx_info->l2te);
}
/*
* chcr_ktls_act_open_req6: creates TCB entry for ipv6 connection.
* @sk - tcp socket.
* @tx_info - driver specific tls info.
* @atid - connection active tid.
* return - send success/failure.
*/
static int chcr_ktls_act_open_req6(struct sock *sk,
struct chcr_ktls_info *tx_info,
int atid)
{
struct inet_sock *inet = inet_sk(sk);
struct cpl_t6_act_open_req6 *cpl6;
struct cpl_act_open_req6 *cpl;
struct sk_buff *skb;
unsigned int len;
int qid_atid;
u64 options;
len = sizeof(*cpl6);
skb = alloc_skb(len, GFP_KERNEL);
if (unlikely(!skb))
return -ENOMEM;
/* mark it a control pkt */
set_wr_txq(skb, CPL_PRIORITY_CONTROL, tx_info->port_id);
cpl6 = __skb_put_zero(skb, len);
cpl = (struct cpl_act_open_req6 *)cpl6;
INIT_TP_WR(cpl6, 0);
qid_atid = TID_QID_V(tx_info->rx_qid) | TID_TID_V(atid);
OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, qid_atid));
cpl->local_port = inet->inet_sport;
cpl->peer_port = inet->inet_dport;
cpl->local_ip_hi = *(__be64 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8[0];
cpl->local_ip_lo = *(__be64 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8[8];
cpl->peer_ip_hi = *(__be64 *)&sk->sk_v6_daddr.in6_u.u6_addr8[0];
cpl->peer_ip_lo = *(__be64 *)&sk->sk_v6_daddr.in6_u.u6_addr8[8];
/* first 64 bit option field. */
options = TCAM_BYPASS_F | ULP_MODE_V(ULP_MODE_NONE) | NON_OFFLOAD_F |
SMAC_SEL_V(tx_info->smt_idx) | TX_CHAN_V(tx_info->tx_chan);
cpl->opt0 = cpu_to_be64(options);
/* next 64 bit option field. */
options =
TX_QUEUE_V(tx_info->adap->params.tp.tx_modq[tx_info->tx_chan]);
cpl->opt2 = htonl(options);
return cxgb4_l2t_send(tx_info->netdev, skb, tx_info->l2te);
}
/*
* chcr_setup_connection: create a TCB entry so that TP will form tcp packets.
* @sk - tcp socket.
@ -245,7 +298,13 @@ static int chcr_setup_connection(struct sock *sk,
ret = chcr_ktls_act_open_req(sk, tx_info, atid);
} else {
tx_info->ip_family = AF_INET6;
ret = -EOPNOTSUPP;
ret =
cxgb4_clip_get(tx_info->netdev,
(const u32 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8,
1);
if (ret)
goto out;
ret = chcr_ktls_act_open_req6(sk, tx_info, atid);
}
/* if return type is NET_XMIT_CN, msg will be sent but delayed, mark ret
@ -322,23 +381,35 @@ static void chcr_ktls_dev_del(struct net_device *netdev,
struct chcr_ktls_ofld_ctx_tx *tx_ctx =
chcr_get_ktls_tx_context(tls_ctx);
struct chcr_ktls_info *tx_info = tx_ctx->chcr_info;
struct sock *sk;
if (!tx_info)
return;
sk = tx_info->sk;
spin_lock(&tx_info->lock);
tx_info->connection_state = KTLS_CONN_CLOSED;
spin_unlock(&tx_info->lock);
/* clear l2t entry */
if (tx_info->l2te)
cxgb4_l2t_release(tx_info->l2te);
/* clear clip entry */
if (tx_info->ip_family == AF_INET6)
cxgb4_clip_release(netdev,
(const u32 *)&sk->sk_v6_daddr.in6_u.u6_addr8,
1);
/* clear tid */
if (tx_info->tid != -1) {
/* clear tcb state and then release tid */
chcr_ktls_mark_tcb_close(tx_info);
cxgb4_remove_tid(&tx_info->adap->tids, tx_info->tx_chan,
tx_info->tid, tx_info->ip_family);
}
atomic64_inc(&tx_info->adap->chcr_stats.ktls_tx_connection_close);
kvfree(tx_info);
tx_ctx->chcr_info = NULL;
}
@ -424,7 +495,7 @@ static int chcr_ktls_dev_add(struct net_device *netdev, struct sock *sk,
ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED)) {
memcpy(daaddr, &sk->sk_daddr, 4);
} else {
goto out2;
memcpy(daaddr, sk->sk_v6_daddr.in6_u.u6_addr8, 16);
}
/* get the l2t index */
@ -458,10 +529,12 @@ static int chcr_ktls_dev_add(struct net_device *netdev, struct sock *sk,
if (ret)
goto out2;
atomic64_inc(&adap->chcr_stats.ktls_tx_connection_open);
return 0;
out2:
kvfree(tx_info);
out:
atomic64_inc(&adap->chcr_stats.ktls_tx_connection_fail);
return ret;
}
@ -729,6 +802,7 @@ static int chcr_ktls_xmit_tcb_cpls(struct chcr_ktls_info *tx_info,
TCB_SND_UNA_RAW_V
(TCB_SND_UNA_RAW_M),
TCB_SND_UNA_RAW_V(0), 0);
atomic64_inc(&tx_info->adap->chcr_stats.ktls_tx_ooo);
cpl++;
}
/* update ack */
@ -1152,6 +1226,7 @@ static int chcr_ktls_xmit_wr_complete(struct sk_buff *skb,
chcr_txq_advance(&q->q, ndesc);
cxgb4_ring_tx_db(adap, &q->q, ndesc);
atomic64_inc(&adap->chcr_stats.ktls_tx_send_records);
return 0;
}
@ -1562,6 +1637,7 @@ static int chcr_end_part_handler(struct chcr_ktls_info *tx_info,
/* check if it is a complete record */
if (tls_end_offset == record->len) {
nskb = skb;
atomic64_inc(&tx_info->adap->chcr_stats.ktls_tx_complete_pkts);
} else {
dev_kfree_skb_any(skb);
@ -1579,6 +1655,7 @@ static int chcr_end_part_handler(struct chcr_ktls_info *tx_info,
*/
if (chcr_ktls_update_snd_una(tx_info, q))
goto out;
atomic64_inc(&tx_info->adap->chcr_stats.ktls_tx_end_pkts);
}
if (chcr_ktls_xmit_wr_complete(nskb, tx_info, q, tcp_seq,
@ -1649,6 +1726,7 @@ static int chcr_short_record_handler(struct chcr_ktls_info *tx_info,
/* free the last trimmed portion */
dev_kfree_skb_any(skb);
skb = tmp_skb;
atomic64_inc(&tx_info->adap->chcr_stats.ktls_tx_trimmed_pkts);
}
data_len = skb->data_len;
/* check if the middle record's start point is 16 byte aligned. CTR
@ -1720,6 +1798,7 @@ static int chcr_short_record_handler(struct chcr_ktls_info *tx_info,
*/
if (chcr_ktls_update_snd_una(tx_info, q))
goto out;
atomic64_inc(&tx_info->adap->chcr_stats.ktls_tx_middle_pkts);
} else {
/* Else means, its a partial first part of the record. Check if
* its only the header, don't need to send for encryption then.
@ -1734,6 +1813,7 @@ static int chcr_short_record_handler(struct chcr_ktls_info *tx_info,
}
return 0;
}
atomic64_inc(&tx_info->adap->chcr_stats.ktls_tx_start_pkts);
}
if (chcr_ktls_xmit_wr_short(skb, tx_info, q, tcp_seq, tcp_push_no_fin,
@ -1755,6 +1835,7 @@ int chcr_ktls_xmit(struct sk_buff *skb, struct net_device *dev)
struct tcphdr *th = tcp_hdr(skb);
int data_len, qidx, ret = 0, mss;
struct tls_record_info *record;
struct chcr_stats_debug *stats;
struct chcr_ktls_info *tx_info;
u32 tls_end_offset, tcp_seq;
struct tls_context *tls_ctx;
@ -1800,6 +1881,8 @@ int chcr_ktls_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_BUSY;
adap = tx_info->adap;
stats = &adap->chcr_stats;
qidx = skb->queue_mapping;
q = &adap->sge.ethtxq[qidx + tx_info->first_qset];
cxgb4_reclaim_completed_tx(adap, &q->q, true);
@ -1829,6 +1912,7 @@ int chcr_ktls_xmit(struct sk_buff *skb, struct net_device *dev)
* part of the record is received. Incase of partial end part of record,
* we will send the complete record again.
*/
do {
int i;
@ -1843,11 +1927,13 @@ int chcr_ktls_xmit(struct sk_buff *skb, struct net_device *dev)
*/
if (unlikely(!record)) {
spin_unlock_irqrestore(&tx_ctx->base.lock, flags);
atomic64_inc(&stats->ktls_tx_drop_no_sync_data);
goto out;
}
if (unlikely(tls_record_is_start_marker(record))) {
spin_unlock_irqrestore(&tx_ctx->base.lock, flags);
atomic64_inc(&stats->ktls_tx_skip_no_sync_data);
goto out;
}
@ -1918,6 +2004,10 @@ clear_ref:
} while (data_len > 0);
tx_info->prev_seq = ntohl(th->seq) + skb->data_len;
atomic64_inc(&stats->ktls_tx_encrypted_packets);
atomic64_add(skb->data_len, &stats->ktls_tx_encrypted_bytes);
/* tcp finish is set, send a separate tcp msg including all the options
* as well.
*/

1
drivers/crypto/chelsio/chcr_ktls.h
View File

@ -11,6 +11,7 @@
#include "t4_tcb.h"
#include "l2t.h"
#include "chcr_common.h"
#include "cxgb4_uld.h"
#define CHCR_TCB_STATE_CLOSED 0
#define CHCR_KTLS_KEY_CTX_LEN 16

35
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
View File

@ -3409,6 +3409,41 @@ static int chcr_stats_show(struct seq_file *seq, void *v)
atomic_read(&adap->chcr_stats.tls_pdu_rx));
seq_printf(seq, "TLS Keys (DDR) Count: %10u\n",
atomic_read(&adap->chcr_stats.tls_key));
#ifdef CONFIG_CHELSIO_TLS_DEVICE
seq_puts(seq, "\nChelsio KTLS Crypto Accelerator Stats\n");
seq_printf(seq, "Tx HW offload contexts added: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_ctx));
seq_printf(seq, "Tx connection created: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_connection_open));
seq_printf(seq, "Tx connection failed: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_connection_fail));
seq_printf(seq, "Tx connection closed: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_connection_close));
seq_printf(seq, "Packets passed for encryption : %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_encrypted_packets));
seq_printf(seq, "Bytes passed for encryption : %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_encrypted_bytes));
seq_printf(seq, "Tx records send: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_send_records));
seq_printf(seq, "Tx partial start of records: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_start_pkts));
seq_printf(seq, "Tx partial middle of records: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_middle_pkts));
seq_printf(seq, "Tx partial end of record: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_end_pkts));
seq_printf(seq, "Tx complete records: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_complete_pkts));
seq_printf(seq, "TX trim pkts : %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_trimmed_pkts));
seq_printf(seq, "Tx out of order packets: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_ooo));
seq_printf(seq, "Tx drop pkts before HW offload: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_skip_no_sync_data));
seq_printf(seq, "Tx drop not synced packets: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_drop_no_sync_data));
seq_printf(seq, "Tx drop bypass req: %20llu\n",
atomic64_read(&adap->chcr_stats.ktls_tx_drop_bypass_req));
#endif
return 0;
}

20
drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
View File

@ -357,6 +357,26 @@ struct chcr_stats_debug {
atomic_t tls_pdu_tx;
atomic_t tls_pdu_rx;
atomic_t tls_key;
#ifdef CONFIG_CHELSIO_TLS_DEVICE
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;
atomic64_t ktls_tx_ooo;
atomic64_t ktls_tx_skip_no_sync_data;
atomic64_t ktls_tx_drop_no_sync_data;
atomic64_t ktls_tx_drop_bypass_req;
#endif
};
#define OCQ_WIN_OFFSET(pdev, vres) \