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| author |   Miroslav Lichvar <mlichvar@redhat.com> | 2017-05-19 17:52:37 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-05-21 13:37:32 -0400 |
| commit | 90b602f80397657429373ca009f98aec4dd3c553 (patch) | |
| tree | b6ce4214ce48199983704bf95540370472b5da44 /include/linux/netdevice.h | |
| parent | net: ethernet: update drivers to handle HWTSTAMP_FILTER_NTP_ALL (diff) | |
| download | linux-dev-90b602f80397657429373ca009f98aec4dd3c553.tar.xz linux-dev-90b602f80397657429373ca009f98aec4dd3c553.zip | |
net: add function to retrieve original skb device using NAPI ID
Since commit b68581778cd0 ("net: Make skb->skb_iif always track
skb->dev") skbs don't have the original index of the interface which
received the packet. This information is now needed for a new control
message related to hardware timestamping.
Instead of adding a new field to skb, we can find the device by the NAPI
ID if it is available, i.e. CONFIG_NET_RX_BUSY_POLL is enabled and the
driver is using NAPI. Add dev_get_by_napi_id() and also skb_napi_id() to
hide the CONFIG_NET_RX_BUSY_POLL ifdef.
CC: Richard Cochran <richardcochran@gmail.com>
Suggested-by: Willem de Bruijn <willemb@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/netdevice.h')
| -rw-r--r-- | include/linux/netdevice.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index f8f7cd52a0a0..c50c9218e31e 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2456,6 +2456,7 @@ static inline int dev_recursion_level(void) struct net_device *dev_get_by_index(struct net *net, int ifindex); struct net_device *__dev_get_by_index(struct net *net, int ifindex); struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); +struct net_device *dev_get_by_napi_id(unsigned int napi_id); int netdev_get_name(struct net *net, char *name, int ifindex); int dev_restart(struct net_device *dev); int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb); |