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From: Rohit Maheshwari <rohitm@chelsio.com>
To: kuba@kernel.org, netdev@vger.kernel.org, davem@davemloft.net
Cc: secdev@chelsio.com, Rohit Maheshwari <rohitm@chelsio.com>
Subject: [net v6 12/12] ch_ktls: stop the txq if reaches threshold
Date: Mon,  9 Nov 2020 16:21:42 +0530	[thread overview]
Message-ID: <20201109105142.15398-13-rohitm@chelsio.com> (raw)
In-Reply-To: <20201109105142.15398-1-rohitm@chelsio.com>

Stop the queue and ask for the credits if queue reaches to
threashold.

Fixes: 5a4b9fe7fece ("cxgb4/chcr: complete record tx handling")
Signed-off-by: Rohit Maheshwari <rohitm@chelsio.com>
---
 .../chelsio/inline_crypto/ch_ktls/chcr_ktls.c  | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c
index a732051b21e4..c24485c0d512 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c
@@ -835,7 +835,7 @@ static int chcr_ktls_xmit_tcb_cpls(struct chcr_ktls_info *tx_info,
 {
 	bool first_wr = ((tx_info->prev_ack == 0) && (tx_info->prev_win == 0));
 	struct ch_ktls_port_stats_debug *port_stats;
-	u32 len, cpl = 0, ndesc, wr_len;
+	u32 len, cpl = 0, ndesc, wr_len, wr_mid = 0;
 	struct fw_ulptx_wr *wr;
 	int credits;
 	void *pos;
@@ -851,6 +851,11 @@ static int chcr_ktls_xmit_tcb_cpls(struct chcr_ktls_info *tx_info,
 		return NETDEV_TX_BUSY;
 	}
 
+	if (unlikely(credits < ETHTXQ_STOP_THRES)) {
+		chcr_eth_txq_stop(q);
+		wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F;
+	}
+
 	pos = &q->q.desc[q->q.pidx];
 	/* make space for WR, we'll fill it later when we know all the cpls
 	 * being sent out and have complete length.
@@ -905,7 +910,8 @@ static int chcr_ktls_xmit_tcb_cpls(struct chcr_ktls_info *tx_info,
 		wr->op_to_compl = htonl(FW_WR_OP_V(FW_ULPTX_WR));
 		wr->cookie = 0;
 		/* fill len in wr field */
-		wr->flowid_len16 = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(len, 16)));
+		wr->flowid_len16 = htonl(wr_mid |
+					 FW_WR_LEN16_V(DIV_ROUND_UP(len, 16)));
 
 		ndesc = DIV_ROUND_UP(len, 64);
 		chcr_txq_advance(&q->q, ndesc);
@@ -986,6 +992,7 @@ chcr_ktls_write_tcp_options(struct chcr_ktls_info *tx_info, struct sk_buff *skb,
 	struct tcphdr *tcp;
 	int len16, pktlen;
 	struct iphdr *ip;
+	u32 wr_mid = 0;
 	int credits;
 	u8 buf[150];
 	u64 cntrl1;
@@ -1010,6 +1017,11 @@ chcr_ktls_write_tcp_options(struct chcr_ktls_info *tx_info, struct sk_buff *skb,
 		return NETDEV_TX_BUSY;
 	}
 
+	if (unlikely(credits < ETHTXQ_STOP_THRES)) {
+		chcr_eth_txq_stop(q);
+		wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F;
+	}
+
 	pos = &q->q.desc[q->q.pidx];
 	wr = pos;
 
@@ -1017,7 +1029,7 @@ chcr_ktls_write_tcp_options(struct chcr_ktls_info *tx_info, struct sk_buff *skb,
 	wr->op_immdlen = htonl(FW_WR_OP_V(FW_ETH_TX_PKT_WR) |
 			       FW_WR_IMMDLEN_V(ctrl));
 
-	wr->equiq_to_len16 = htonl(FW_WR_LEN16_V(len16));
+	wr->equiq_to_len16 = htonl(wr_mid | FW_WR_LEN16_V(len16));
 	wr->r3 = 0;
 
 	cpl = (void *)(wr + 1);
-- 
2.18.1


  parent reply	other threads:[~2020-11-09 10:53 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-09 10:51 [net v6 00/12] cxgb4/ch_ktls: Fixes in nic tls code Rohit Maheshwari
2020-11-09 10:51 ` [net v6 01/12] cxgb4/ch_ktls: decrypted bit is not enough Rohit Maheshwari
2020-11-09 10:51 ` [net v6 02/12] ch_ktls: Correction in finding correct length Rohit Maheshwari
2020-11-09 10:51 ` [net v6 03/12] ch_ktls: Update cheksum information Rohit Maheshwari
2020-11-09 10:51 ` [net v6 04/12] cxgb4/ch_ktls: creating skbs causes panic Rohit Maheshwari
2020-11-09 10:51 ` [net v6 05/12] ch_ktls: Correction in trimmed_len calculation Rohit Maheshwari
2020-11-09 10:51 ` [net v6 06/12] ch_ktls: missing handling of header alone Rohit Maheshwari
2020-11-09 10:51 ` [net v6 07/12] ch_ktls: Correction in middle record handling Rohit Maheshwari
2020-11-09 10:51 ` [net v6 08/12] ch_ktls: packet handling prior to start marker Rohit Maheshwari
2020-11-09 10:51 ` [net v6 09/12] ch_ktls: don't free skb before sending FIN Rohit Maheshwari
2020-11-09 10:51 ` [net v6 10/12] ch_ktls/cxgb4: handle partial tag alone SKBs Rohit Maheshwari
2020-11-09 10:51 ` [net v6 11/12] ch_ktls: tcb update fails sometimes Rohit Maheshwari
2020-11-09 10:51 ` Rohit Maheshwari [this message]
2020-11-12  0:37 ` [net v6 00/12] cxgb4/ch_ktls: Fixes in nic tls code Jakub Kicinski

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