Thread (29 messages) 29 messages, 3 authors, 2020-01-13

Re: [PATCH net-next v5 05/15] net: macsec: hardware offloading infrastructure

From: Antoine Tenart <hidden>
Date: 2020-01-13 14:58:07
Also in: lkml

Hello Jiri,

On Mon, Jan 13, 2020 at 03:34:52PM +0100, Jiri Pirko wrote:
Fri, Jan 10, 2020 at 05:20:00PM CET, antoine.tenart@bootlin.com wrote:

Couple nitpicks I randomly spotted:

[...]

quoted
+static bool macsec_is_offloaded(struct macsec_dev *macsec)
+{
+	if (macsec->offload == MACSEC_OFFLOAD_PHY)
+		return true;
+
+	return false;
Just:
	return macsec->offload == MACSEC_OFFLOAD_PHY;
This construction is because I split the phy offloading support from the
MAC one, and this check becomes more complex when the MAC offloading
support is applied. I could check it's not MACSEC_OFFLOAD_OFF, but I
think it's nice having the default set to false when reading the code.
quoted
+/* Checks if underlying layers implement MACsec offloading functions. */
+static bool macsec_check_offload(enum macsec_offload offload,
+				 struct macsec_dev *macsec)
+{
+	if (!macsec || !macsec->real_dev)
+		return false;
+
+	if (offload == MACSEC_OFFLOAD_PHY)
You have a helper for this already - macsec_is_offloaded(). No need for
"offload" arg then.
Same here, except the _PHY case is different from the _MAC one. So the
check needs to be specific to _PHY.
quoted
+		return macsec->real_dev->phydev &&
+		       macsec->real_dev->phydev->macsec_ops;
+
+	return false;
+}
+
+static const struct macsec_ops *__macsec_get_ops(enum macsec_offload offload,
+						 struct macsec_dev *macsec,
+						 struct macsec_context *ctx)
+{
+	if (ctx) {
+		memset(ctx, 0, sizeof(*ctx));
+		ctx->offload = offload;
+
+		if (offload == MACSEC_OFFLOAD_PHY)
Same here.
Same here.

Thanks,
Antoine

-- 
Antoine Ténart, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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