With the latest change of separating vports into their own modules,
it is necessary to export all public functions in linux/compat/
directory. Also, we should prefix functions which replace the
upstream ones with 'rpl_' and others with 'ovs_'. This will prevent
the linker error when vport modules use those functions in the future.
e.g., the to be merged vport-stt module will use the flex_array_*
functions which are not currently exported.
Co-authored-by: Tuan Nguyen <tuan.nguyen@veriksystems.com>
Signed-off-by: Alex Wang <alexw@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
skb protocol offsets are relative to the beginning of the
buffer and therefore must be updated if the buffer size is
expanded. Kernel functions do this automatically for existing
fields but obviously not for anything that we backport. This
introduces a wrapper for pskb_expand_head() to update the
inner protocol fields that we have backported.
Without this, a kernel crash can be triggered with tunnel
packets that do not have enough headroom and need to be
segmented. pskb_expand_head() is called in directly through
skb_cow_head() at the beginning of each of the tunnel transmit
routines.
Reported-by: Yinpeijun <yinpeijun@huawei.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Upstream commit:
net: rename vlan_tx_* helpers since "tx" is misleading there
The same macros are used for rx as well. So rename it.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Upstream: df8a39d ("net: rename vlan_tx_* helpers since "tx" is misleading there")
Signed-off-by: Thomas Graf <tgraf@noironetworks.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
So it can be used from out of openvswitch code.
Did couple of cosmetic changes on the way, namely variable naming and
adding support for 8021AD proto.
Note on backwards compatability:
Unlike the upstream version, the backport of skb_vlan_push() does not
support translating a hardware accelerated 8021AD tag to software.
This is not a problem though as it preserves existing behaviour.
Upstream: 93515d53 ("net: move vlan pop/push functions into common code")
Signed-off-by: Thomas Graf <tgraf@noironetworks.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
note that skb_make_writable already exists in net/netfilter/core.c
but does something slightly different.
Upstream: e219512 ("net: move make_writable helper into common code")
Signed-off-by: Thomas Graf <tgraf@noironetworks.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
This patch mostly is related to tunnel API where RHEL 7
kernel API are not in-sync with newer linux kernel API. So
extra checks are required to check for parameters of API.
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Jiri Benc <jbenc@redhat.com>
This is the ported version of commit 36d5fe6a with the same name from net-next.
Apart from the small datapath.c changes it adjust the compat layer files as
well. This is the original commit message:
"skb_zerocopy can copy elements of the frags array between skbs, but it doesn't
orphan them. Also, it doesn't handle errors, so this patch takes care of that
as well, and modify the callers accordingly. skb_tx_error() is also added to
the callers so they will signal the failed delivery towards the creator of the
skb."
Signed-off-by: Zoltan Kiss <zoltan.kiss@citrix.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
These functions will be factored out and exported upstream. On
kernels 3.5 and newer the backport will provide zero copy support
but older kernels will work as before (due to lack of skb->head_frag).
Signed-off-by: Jesse Gross <jesse@nicira.com>
Following patch restructures ovs tunneling and gre vport
implementation to make ovs tunneling more in sync with
upstream kernel tunneling. Doing this tunneling code is
simplified as most of protocol processing on send and
recv is pushed to kernel tunneling. For external ovs
module the code is moved to kernel compatibility code.
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
The linux-2.6 and compat-2.6 directories apply equally to the upcoming
Linux 3.0 release, so this drops the 2.6 suffix and updates Makefiles.
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
