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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: Srikanth Jampala <Jampala.Srikanth@cavium.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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48e10548f8
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fec165c947
3 changed files with 20 additions and 1 deletions
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@ -75,6 +75,12 @@ struct nitrox_hw {
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u8 zip_cores;
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};
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struct nitrox_stats {
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atomic64_t posted;
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atomic64_t completed;
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atomic64_t dropped;
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};
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#define MAX_MSIX_VECTOR_NAME 20
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/**
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* vectors for queues (64 AE, 64 SE and 64 ZIP) and
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@ -176,6 +182,7 @@ struct nitrox_device {
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struct nitrox_msix msix;
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struct nitrox_bh bh;
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struct nitrox_stats stats;
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struct nitrox_hw hw;
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#if IS_ENABLED(CONFIG_DEBUG_FS)
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struct dentry *debugfs_dir;
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@ -542,6 +542,11 @@ static int nitrox_probe(struct pci_dev *pdev,
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if (err)
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goto pf_hw_fail;
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/* clear the statistics */
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atomic64_set(&ndev->stats.posted, 0);
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atomic64_set(&ndev->stats.completed, 0);
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atomic64_set(&ndev->stats.dropped, 0);
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atomic_set(&ndev->state, __NDEV_READY);
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/* barrier to sync with other cpus */
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smp_mb__after_atomic();
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@ -460,6 +460,9 @@ static void post_se_instr(struct nitrox_softreq *sr,
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cmdq->write_idx = incr_index(idx, 1, ndev->qlen);
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spin_unlock_bh(&cmdq->cmdq_lock);
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/* increment the posted command count */
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atomic64_inc(&ndev->stats.posted);
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}
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static int post_backlog_cmds(struct nitrox_cmdq *cmdq)
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@ -508,8 +511,11 @@ static int nitrox_enqueue_request(struct nitrox_softreq *sr)
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post_backlog_cmds(cmdq);
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if (unlikely(cmdq_full(cmdq, ndev->qlen))) {
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if (!(sr->flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
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if (!(sr->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
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/* increment drop count */
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atomic64_inc(&ndev->stats.dropped);
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return -ENOSPC;
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}
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/* add to backlog list */
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backlog_list_add(sr, cmdq);
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return -EBUSY;
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@ -694,6 +700,7 @@ static void process_response_list(struct nitrox_cmdq *cmdq)
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READ_ONCE(sr->resp.orh));
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}
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atomic_dec(&cmdq->pending_count);
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atomic64_inc(&ndev->stats.completed);
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/* sync with other cpus */
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smp_mb__after_atomic();
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/* remove from response list */
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