2010-07-07 11:12:45 +00:00
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From: Brandon Philips <bphilips@suse.de>
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Subject: [PATCH] bnx2: entropy source
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Patch-mainline: never
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References: FATE#307517
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Current disk-less systems have no entropy source whatsoever. Therefore, the
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network drivers tg3, bnx2, e1000, e1000e, igb and ixgbe should be enabled to
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feed entropy to the kernel via the IRQF_SAMPLE_RANDOM flag when loaded. This
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option shall not be enabled by default but implemented via a module option to
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be activated by the administrator.
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Signed-off-by: Brandon Philips <bphilips@suse.de>
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---
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drivers/net/bnx2.c | 7 +++++++
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1 file changed, 7 insertions(+)
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--- a/drivers/net/bnx2.c
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+++ b/drivers/net/bnx2.c
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@@ -84,6 +84,10 @@ MODULE_FIRMWARE(FW_MIPS_FILE_09);
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MODULE_FIRMWARE(FW_RV2P_FILE_09);
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MODULE_FIRMWARE(FW_RV2P_FILE_09_Ax);
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+static int entropy = 0;
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+module_param(entropy, int, 0);
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+MODULE_PARM_DESC(entropy, "Allow bnx2 to populate the /dev/random entropy pool");
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+
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static int disable_msi = 0;
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module_param(disable_msi, int, 0);
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2011-04-19 20:09:59 +00:00
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@@ -6116,6 +6120,9 @@ bnx2_request_irq(struct bnx2 *bp)
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2010-07-07 11:12:45 +00:00
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else
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flags = IRQF_SHARED;
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+ if (entropy)
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+ flags |= IRQF_SAMPLE_RANDOM;
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+
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for (i = 0; i < bp->irq_nvecs; i++) {
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irq = &bp->irq_tbl[i];
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rc = request_irq(irq->vector, irq->handler, flags, irq->name,
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