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kernel: describe bridge patch "remove IPv6 depependency of bridge in 2.6.38+"

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It was initially added in r27237 by jow as patch from Jonas.

SVN-Revision: 46826
This commit is contained in:
Rafał Miłecki 2015-09-08 16:43:10 +00:00
parent f8a689d276
commit 255d7ad8ba
3 changed files with 39 additions and 0 deletions
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13
target/linux/generic/patches-3.18/643-bridge_remove_ipv6_dependency.patch
View file

@ -1,3 +1,16 @@
From: Jonas Gorski <jonas.gorski+openwrt@gmail.com>
Subject: [PATCH] bridge: remove IPv6 depependency of bridge in 2.6.38+
Since 2.6.38 the bridge module has a dependency to IPv6 if IPv6 is
enabled. Since the IPv6 module isn't exactly lightweight and bridge also
only needs a single function from IPv6, it's rather easy to create a
common "lib" module with a RCU pointer to the actual implementation, if
the IPv6 module is loaded (although slightly hackish).
The codepath seems to be only taken when using IPv6, so there should be
no negative side effects when IPv6 isn't loaded. I did not measure how
big the performance impact is.
---
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -88,6 +88,12 @@ int ipv6_rcv_saddr_equal(const struct so

13
target/linux/generic/patches-4.0/643-bridge_remove_ipv6_dependency.patch
View file

@ -1,3 +1,16 @@
From: Jonas Gorski <jonas.gorski+openwrt@gmail.com>
Subject: [PATCH] bridge: remove IPv6 depependency of bridge in 2.6.38+
Since 2.6.38 the bridge module has a dependency to IPv6 if IPv6 is
enabled. Since the IPv6 module isn't exactly lightweight and bridge also
only needs a single function from IPv6, it's rather easy to create a
common "lib" module with a RCU pointer to the actual implementation, if
the IPv6 module is loaded (although slightly hackish).
The codepath seems to be only taken when using IPv6, so there should be
no negative side effects when IPv6 isn't loaded. I did not measure how
big the performance impact is.
---
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -91,6 +91,12 @@ int ipv6_rcv_saddr_equal(const struct so

13
target/linux/generic/patches-4.1/643-bridge_remove_ipv6_dependency.patch
View file

@ -1,3 +1,16 @@
From: Jonas Gorski <jonas.gorski+openwrt@gmail.com>
Subject: [PATCH] bridge: remove IPv6 depependency of bridge in 2.6.38+
Since 2.6.38 the bridge module has a dependency to IPv6 if IPv6 is
enabled. Since the IPv6 module isn't exactly lightweight and bridge also
only needs a single function from IPv6, it's rather easy to create a
common "lib" module with a RCU pointer to the actual implementation, if
the IPv6 module is loaded (although slightly hackish).
The codepath seems to be only taken when using IPv6, so there should be
no negative side effects when IPv6 isn't loaded. I did not measure how
big the performance impact is.
---
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -91,6 +91,12 @@ int ipv6_rcv_saddr_equal(const struct so