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authorJeff Moyer <jmoyer@redhat.com>2005-06-22 22:05:59 -0700
committerDavid S. Miller <davem@davemloft.net>2005-06-22 22:05:59 -0700
commitfbeec2e1552949002065435c9829dc244ad85407 (patch)
treed97dc663bbef4bf59a1858b23a327f14043c33d1 /net/appletalk
parent115c1d6e61b70851d9a363328c3b8d4c2559a1d3 (diff)
downloadop-kernel-dev-fbeec2e1552949002065435c9829dc244ad85407.zip
op-kernel-dev-fbeec2e1552949002065435c9829dc244ad85407.tar.gz
[NETPOLL]: allow multiple netpoll_clients to register against one interface
This patch provides support for registering multiple netpoll clients to the same network device. Only one of these clients may register an rx_hook, however. In practice, this restriction has not been problematic. It is worth mentioning, though, that the current design can be easily extended to allow for the registration of multiple rx_hooks. The basic idea of the patch is that the rx_np pointer in the netpoll_info structure points to the struct netpoll that has rx_hook filled in. Aside from this one case, there is no need for a pointer from the struct net_device to an individual struct netpoll. A lock is introduced to protect the setting and clearing of the np_rx pointer. The pointer will only be cleared upon netpoll client module removal, and the lock should be uncontested. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/appletalk')
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