netdev - [PATCH net-next] chelsio/chtls: Utilizing multiple rxq/txq to process requests

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Date:   Mon,  2 Nov 2020 21:58:33 +0530
From:   Vinay Kumar Yadav <vinay.yadav@...lsio.com>
To:     netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org
Cc:     secdev@...lsio.com, Vinay Kumar Yadav <vinay.yadav@...lsio.com>,
        Ayush Sawal <ayush.sawal@...lsio.com>
Subject: [PATCH net-next] chelsio/chtls: Utilizing multiple rxq/txq to process requests

patch adds a logic to utilize multiple queues to process requests.
The queue selection logic uses a round-robin distribution technique
using a counter.

Signed-off-by: Ayush Sawal <ayush.sawal@...lsio.com>
Signed-off-by: Vinay Kumar Yadav <vinay.yadav@...lsio.com>
---
 drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls.h    | 1 +
 drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls.h b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls.h
index 2d3dfdd2a716..e7b78b68eaac 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls.h
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls.h
@@ -235,6 +235,7 @@ struct chtls_dev {
 	struct list_head na_node;
 	unsigned int send_page_order;
 	int max_host_sndbuf;
+	u32 round_robin_cnt;
 	struct key_map kmap;
 	unsigned int cdev_state;
 };
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
index ec4f79049a06..5c3242ec0e10 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
@@ -1220,8 +1220,9 @@ static struct sock *chtls_recv_sock(struct sock *lsk,
 	csk->sndbuf = csk->snd_win;
 	csk->ulp_mode = ULP_MODE_TLS;
 	step = cdev->lldi->nrxq / cdev->lldi->nchan;
-	csk->rss_qid = cdev->lldi->rxq_ids[port_id * step];
 	rxq_idx = port_id * step;
+	rxq_idx += cdev->round_robin_cnt++ % step;
+	csk->rss_qid = cdev->lldi->rxq_ids[rxq_idx];
 	csk->txq_idx = (rxq_idx < cdev->lldi->ntxq) ? rxq_idx :
 			port_id * step;
 	csk->sndbuf = newsk->sk_sndbuf;
-- 
2.18.1