linux-toradex.git/net/sched/cls_flow.c, branch v3.15

net_sched: add struct net pointer to tcf_proto_ops->dump

2014-01-13T19:50:14+00:00

It will be needed by the next patch.

Cc: Jamal Hadi Salim 
Cc: David S. Miller 
Signed-off-by: Cong Wang 
Signed-off-by: Jamal Hadi Salim 
Signed-off-by: David S. Miller

net_sched: cls: refactor out struct tcf_ext_map

2013-12-18T17:52:07+00:00

These information can be saved in tcf_exts, and this will
simplify the code.

Cc: Jamal Hadi Salim 
Cc: David S. Miller 
Signed-off-by: Cong Wang 
Signed-off-by: Jamal Hadi Salim 
Signed-off-by: David S. Miller

net_sched: act: use standard struct list_head

2013-12-18T17:52:07+00:00

Currently actions are chained by a singly linked list,
therefore it is a bit hard to add and remove a specific
entry. Convert it to struct list_head so that in the
latter patch we can remove an action without finding
its head.

Cc: Jamal Hadi Salim 
Cc: David S. Miller 
Signed-off-by: Cong Wang 
Signed-off-by: Jamal Hadi Salim 
Signed-off-by: David S. Miller

net: Change skb_get_rxhash to skb_get_hash

2013-12-17T21:36:21+00:00

Changing name of function as part of making the hash in skbuff to be
generic property, not just for receive path.

Signed-off-by: Tom Herbert 
Signed-off-by: David S. Miller

netlink: rename ssk to sk in struct netlink_skb_params

2013-04-19T18:57:56+00:00

Memory mapped netlink needs to store the receiving userspace socket
when sending from the kernel to userspace. Rename 'ssk' to 'sk' to
avoid confusion.

Signed-off-by: Patrick McHardy 
Signed-off-by: David S. Miller

pkt_sched: namespace aware act_mirred

2013-01-14T20:09:36+00:00

Eric Dumazet pointed out that act_mirred needs to find the current net_ns,
and struct net pointer is not provided in the call chain.  His original
patch made use of current->nsproxy->net_ns to find the network namespace,
but this fails to work correctly for userspace code that makes use of
netlink sockets in different network namespaces.  Instead, pass the
"struct net *" down along the call chain to where it is needed.

This version removes the ifb changes as Eric has submitted that patch
separately, but is otherwise identical to the previous version.

Signed-off-by: Benjamin LaHaise 
Tested-by: Eric Dumazet 
Acked-by: Jamal Hadi Salim 
Signed-off-by: David S. Miller

userns: Convert cls_flow to work with user namespaces enabled

2012-08-15T04:55:28+00:00

The flow classifier can use uids and gids of the sockets that
are transmitting packets and do insert those uids and gids
into the packet classification calcuation.  I don't fully
understand the details but it appears that we can depend
on specific uids and gids when making traffic classification
decisions.

To work with user namespaces enabled map from kuids and kgids
into uids and gids in the initial user namespace giving raw
integer values the code can play with and depend on.

To avoid issues of userspace depending on uids and gids in
packet classifiers installed from other user namespaces
and getting confused deny all packet classifiers that
use uids or gids that are not comming from a netlink socket
in the initial user namespace.

Cc: Patrick McHardy 
Cc: Eric Dumazet 
Cc: Jamal Hadi Salim 
Cc: Changli Gao 
Acked-by: David S. Miller 
Acked-by: Serge Hallyn 
Signed-off-by: Eric W. Biederman

net sched: Pass the skb into change so it can access NETLINK_CB

2012-08-15T04:55:28+00:00

cls_flow.c plays with uids and gids.  Unless I misread that
code it is possible for classifiers to depend on the specific uid and
gid values.  Therefore I need to know the user namespace of the
netlink socket that is installing the packet classifiers.  Pass
in the rtnetlink skb so I can access the NETLINK_CB of the passed
packet.  In particular I want access to sk_user_ns(NETLINK_CB(in_skb).ssk).

Pass in not the user namespace but the incomming rtnetlink skb into
the the classifier change routines as that is generally the more useful
parameter.

Cc: Jamal Hadi Salim 
Acked-by: David S. Miller 
Acked-by: Serge Hallyn 
Signed-off-by: Eric W. Biederman

pkt_sched: Stop using NLA_PUT*().

2012-04-01T22:11:37+00:00

These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.

Signed-off-by: David S. Miller

cls_flow: remove one dynamic array

2011-12-14T18:34:55+00:00

Its better to use a predefined size for this small automatic variable.

Removes a sparse error as well :

net/sched/cls_flow.c:288:13: error: bad constant expression

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller