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cryptd: Add cryptd_max_cpu_qlen module parameter

PATCH In review Jon Maxwell 2 participants 2 messages Nov 22, 2017 – Nov 29, 2017 Crypto API

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Jon Maxwell

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PATCH 1/1 cryptd: Add cryptd_max_cpu_qlen module parameter

Make the cryptd queue length configurable. We recently had customer where this needed to be tuned to accommodate the aesni_intel module and prevent packet drop.

Signed-off-by Jon Maxwell <[email protected]>
---
 crypto/cryptd.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
crypto/cryptd.c +5 -2
index bd43cf5be14c..b1eb131c0f10 100644
@@ -32,7 +32,9 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 
-#define CRYPTD_MAX_CPU_QLEN 1000
+unsigned int cryptd_max_cpu_qlen = 1000;
+module_param(cryptd_max_cpu_qlen, uint, 0);
+MODULE_PARM_DESC(cryptd_max_cpu_qlen, "Set cryptd Max queue depth");
 
 struct cryptd_cpu_queue {
 	struct crypto_queue queue;

@@ -116,6 +118,7 @@ static int cryptd_init_queue(struct cryptd_queue *queue,
 		crypto_init_queue(&cpu_queue->queue, max_cpu_qlen);
 		INIT_WORK(&cpu_queue->work, cryptd_queue_worker);
 	}
+	pr_info("cryptd: max_cpu_qlen set to %d\n", max_cpu_qlen);
 	return 0;
 }
 

@@ -1372,7 +1375,7 @@ static int __init cryptd_init(void)
 {
 	int err;
 
-	err = cryptd_init_queue(&queue, CRYPTD_MAX_CPU_QLEN);
+	err = cryptd_init_queue(&queue, cryptd_max_cpu_qlen);
 	if (err)
 		return err;
Signature · 1 line
2.13.6
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#1 lore raw
Quoted 5 lines · Jon Maxwell

Make the cryptd queue length configurable. We recently had customer where this needed to be tuned to accommodate the aesni_intel module and prevent packet drop.

Signed-off-by Jon Maxwell <[email protected]>

Patch applied. Thanks.

Signature · 3 lines
Email: Herbert Xu <[email protected]>
Home Page: http://gondor.apana.org.au/~herbert/
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