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Subject[PATCH net-next] cryptd: Add cryptd_max_cpu_qlen module parameter
Date
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 <jmaxwell37@gmail.com>
---
crypto/cryptd.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/crypto/cryptd.c b/crypto/cryptd.c
index bd43cf5be14c..b1eb131c0f10 100644
--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -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;

--
2.13.6
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