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rtnl: Add ARPHRD_PUREIP netdev type. #25

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@bmigunov bmigunov commented Mar 1, 2022

Since ARPHRD_PUREIP netdev type has been introduced in kernel on some of
the MTK-based devices, there have been issues caused by the subject.

This netdev type needs to be handled by ipconfig module, so this commit
adds the support of the ARPHRD_PUREIP by handling appropriate ntelink
events.

@@ -51,6 +51,10 @@
#define ARPHRD_RAWIP_1 (519) /* Vanilla kernel */
#define ARPHRD_RAWIP_2 (530) /* Some android kernels */

/* ARPHRD_PUREIP has been introduced in some MTK kernels (in intention to
* get rid of link local address creation for the ccmni net devices) */
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Untrue, well, maybe for MTK but in general reason was this https://lkml.org/lkml/2021/6/24/76 and the solution is not really accepted into kernels as of https://lkml.kernel.org/netdev/[email protected]/

Not yet sure if this is to be included. Upstream might criticize this for sure.

And, multi line comments are formatted (coding-style.txt M2):

/*
 * Line1.
 * Line2.
 */

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Comment section fixed.
It is possible for me to roll current MTK kernel's ccmni interface netdev type back to ARPHRD_PPP as long as it will not lead to any kind of issues (presumably).
But still, I'll leave this PR as a suggestion because there are no guarantees that ARPHRD_PUREIP will not be used in the future MTK projects.

Since ARPHRD_PUREIP netdev type has been introduced in kernel on some of
the MTK-based devices, there have been issues caused by the subject.

This netdev type needs to be handled by ipconfig module, so this commit
adds the support of the ARPHRD_PUREIP by handling appropriate ntelink
events.
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