geneve: Simplify locking.

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The existing Geneve locking scheme was pulled over directly from
VXLAN. However, VXLAN has a number of built in mechanisms which make
the locking more complex and are unlikely to be necessary with Geneve.
This simplifies the locking to use a basic scheme of a mutex
when doing updates plus RCU on receive.

In addition to making the code easier to read, this also avoids the
possibility of a race when creating or destroying sockets since
UDP sockets and the list of Geneve sockets are protected by different
locks. After this change, the entire operation is atomic.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jesse Gross 2015-01-02 18:26:03 -08:00 • committed by David S. Miller

parent 61f3cade76

commit 829a3ada9c

2 changed files with 27 additions and 34 deletions

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2

include/net/geneve.h

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59

net/ipv4/geneve.c

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