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/openbmc/linux/include/net/
H A Drtnetlink.hdiff 35b72beac967240c0a942a008284475b09440db9 Tue Oct 08 13:47:32 CDT 2024 Kuniyuki Iwashima <kuniyu@amazon.com> rtnetlink: Add bulk registration helpers for rtnetlink message handlers.

[ Upstream commit 07cc7b0b942bf55ef1a471470ecda8d2a6a6541f ]

Before commit addf9b90de22 ("net: rtnetlink: use rcu to free rtnl message
handlers"), once rtnl_msg_handlers[protocol] was allocated, the following
rtnl_register_module() for the same protocol never failed.

However, after the commit, rtnl_msg_handler[protocol][msgtype] needs to
be allocated in each rtnl_register_module(), so each call could fail.

Many callers of rtnl_register_module() do not handle the returned error,
and we need to add many error handlings.

To handle that easily, let's add wrapper functions for bulk registration
of rtnetlink message handlers.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Stable-dep-of: 78b7b991838a ("vxlan: Handle error of rtnl_register_module().")
Signed-off-by: Sasha Levin <sashal@kernel.org>
/openbmc/linux/net/core/
H A Drtnetlink.cdiff 35b72beac967240c0a942a008284475b09440db9 Tue Oct 08 13:47:32 CDT 2024 Kuniyuki Iwashima <kuniyu@amazon.com> rtnetlink: Add bulk registration helpers for rtnetlink message handlers.

[ Upstream commit 07cc7b0b942bf55ef1a471470ecda8d2a6a6541f ]

Before commit addf9b90de22 ("net: rtnetlink: use rcu to free rtnl message
handlers"), once rtnl_msg_handlers[protocol] was allocated, the following
rtnl_register_module() for the same protocol never failed.

However, after the commit, rtnl_msg_handler[protocol][msgtype] needs to
be allocated in each rtnl_register_module(), so each call could fail.

Many callers of rtnl_register_module() do not handle the returned error,
and we need to add many error handlings.

To handle that easily, let's add wrapper functions for bulk registration
of rtnetlink message handlers.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Stable-dep-of: 78b7b991838a ("vxlan: Handle error of rtnl_register_module().")
Signed-off-by: Sasha Levin <sashal@kernel.org>