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Commit fec165c9 authored by Srikanth Jampala's avatar Srikanth Jampala Committed by Herbert Xu
Browse files

crypto: cavium/nitrox - add support for per device request statistics. 



Add per device statistics like number of requests posted,
dropped and completed etc.

Signed-off-by: default avatarSrikanth Jampala <Jampala.Srikanth@cavium.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 48e10548

drivers/crypto/cavium/nitrox/nitrox_dev.h

+7 −0
Original line number Diff line number Diff line
@@ -75,6 +75,12 @@ struct nitrox_hw { 
	u8 zip_cores;

};



struct nitrox_stats {

	atomic64_t posted;

	atomic64_t completed;

	atomic64_t dropped;

};



#define MAX_MSIX_VECTOR_NAME	20

/**

 * vectors for queues (64 AE, 64 SE and 64 ZIP) and
@@ -176,6 +182,7 @@ struct nitrox_device { 
	struct nitrox_msix msix;

	struct nitrox_bh bh;



	struct nitrox_stats stats;

	struct nitrox_hw hw;

#if IS_ENABLED(CONFIG_DEBUG_FS)

	struct dentry *debugfs_dir;

drivers/crypto/cavium/nitrox/nitrox_main.c

+5 −0
Original line number Diff line number Diff line
@@ -542,6 +542,11 @@ static int nitrox_probe(struct pci_dev *pdev, 
	if (err)

		goto pf_hw_fail;



	/* clear the statistics */

	atomic64_set(&ndev->stats.posted, 0);

	atomic64_set(&ndev->stats.completed, 0);

	atomic64_set(&ndev->stats.dropped, 0);



	atomic_set(&ndev->state, __NDEV_READY);

	/* barrier to sync with other cpus */

	smp_mb__after_atomic();

drivers/crypto/cavium/nitrox/nitrox_reqmgr.c

+8 −1
Original line number Diff line number Diff line
@@ -460,6 +460,9 @@ static void post_se_instr(struct nitrox_softreq *sr, 
	cmdq->write_idx = incr_index(idx, 1, ndev->qlen);



	spin_unlock_bh(&cmdq->cmdq_lock);



	/* increment the posted command count */

	atomic64_inc(&ndev->stats.posted);

}



static int post_backlog_cmds(struct nitrox_cmdq *cmdq)
@@ -508,8 +511,11 @@ static int nitrox_enqueue_request(struct nitrox_softreq *sr) 
	post_backlog_cmds(cmdq);



	if (unlikely(cmdq_full(cmdq, ndev->qlen))) {

		if (!(sr->flags & CRYPTO_TFM_REQ_MAY_BACKLOG))

		if (!(sr->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {

			/* increment drop count */

			atomic64_inc(&ndev->stats.dropped);

			return -ENOSPC;

		}

		/* add to backlog list */

		backlog_list_add(sr, cmdq);

		return -EBUSY;
@@ -694,6 +700,7 @@ static void process_response_list(struct nitrox_cmdq *cmdq) 
					    READ_ONCE(sr->resp.orh));

		}

		atomic_dec(&cmdq->pending_count);

		atomic64_inc(&ndev->stats.completed);

		/* sync with other cpus */

		smp_mb__after_atomic();

		/* remove from response list */