Commit 83a95df0 authored by Rohit Maheshwari's avatar Rohit Maheshwari Committed by Jakub Kicinski
Browse files

ch_ktls: stop the txq if reaches threshold 



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

Fixes: 5a4b9fe7 ("cxgb4/chcr: complete record tx handling")
Signed-off-by: default avatarRohit Maheshwari <rohitm@chelsio.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 7d01c428

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

+15 −3
Original line number Diff line number Diff line
@@ -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);