| 1e701f16982a9d15488a5aa8c7f5c41444b1de67 |
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08-Sep-2014 |
Tom Herbert <therbert@google.com> |
net: Fix GRE RX to use skb_transport_header for GRE header offset
GRE assumes that the GRE header is at skb_network_header +
ip_hrdlen(skb). It is more general to use skb_transport_header
and this allows the possbility of inserting additional header
between IP and GRE (which is what we will done in Generic UDP
Encapsulation for GRE).
Signed-off-by: Tom Herbert <therbert@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| 884d338c041c2aa4536ade8620efa585e7c57f3c |
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01-Sep-2014 |
Tom Herbert <therbert@google.com> |
gre: Add support for checksum unnecessary conversions
Call skb_checksum_try_convert and skb_gro_checksum_try_convert
after checksum is found present and validated in the GRE header
for normal and GRO paths respectively.
In GRO path, call skb_gro_checksum_try_convert
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| 77cffe23c1f88835f6bd7b47bfa0c060c2969828 |
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28-Aug-2014 |
Tom Herbert <therbert@google.com> |
net: Clarification of CHECKSUM_UNNECESSARY
This patch:
- Clarifies the specific requirements of devices returning
CHECKSUM_UNNECESSARY (comments in skbuff.h).
- Adds csum_level field to skbuff. This is used to express how
many checksums are covered by CHECKSUM_UNNECESSARY (stores n - 1).
This replaces the overloading of skb->encapsulation, that field is
is now only used to indicate inner headers are valid.
- Change __skb_checksum_validate_needed to "consume" each checksum
as indicated by csum_level as layers of the the packet are parsed.
- Remove skb_pop_rcv_encapsulation, no longer needed in the new
csum_level model.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| 48a5fc773190bd5339869003fa65d38559bb8890 |
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22-Aug-2014 |
Tom Herbert <therbert@google.com> |
gre: When GRE csum is present count as encap layer wrt csum
In GRE demux if the GRE checksum pop rcv encapsulation so that any
encapsulated checksums are treated as tunnel checksums.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| d0a7ebbc119738439ff00f7fadbd343ae20ea5e8 |
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11-Jul-2014 |
Amritha Nambiar <amritha.nambiar@intel.com> |
GRE: enable offloads for GRE
To get offloads to work with Generic Routing Encapsulation (GRE), the
outer transport header has to be reset after skb_push is done. This
patch has the support for this fix and hence GRE offloading.
Signed-off-by: Amritha Nambiar <amritha.nambiar@intel.com>
Signed-off-by: Joseph Gasparakis <joseph.gasparakis@intel.com>
Tested-By: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| 4749c09c37030ccdc44aecebe0f71b02a377fc14 |
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05-Jun-2014 |
Tom Herbert <therbert@google.com> |
gre: Call gso_make_checksum
Call gso_make_checksum. This should have the benefit of using a
checksum that may have been previously computed for the packet.
This also adds NETIF_F_GSO_GRE_CSUM to differentiate devices that
offload GRE GSO with and without the GRE checksum offloaed.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| b1036c6a470ccf5f18490a7ce4c99422d3bf77c4 |
|
08-May-2014 |
Tom Herbert <therbert@google.com> |
gre: Call skb_checksum_simple_validate
Use skb_checksum_simple_validate to verify checksum.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| fbd02dd405d0724a0f25897ed4a6813297c9b96f |
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24-Mar-2014 |
Pravin B Shelar <pshelar@nicira.com> |
ip_tunnel: Fix dst ref-count.
Commit 10ddceb22ba (ip_tunnel:multicast process cause panic due
to skb->_skb_refdst NULL pointer) removed dst-drop call from
ip-tunnel-recv.
Following commit reintroduce dst-drop and fix the original bug by
checking loopback packet before releasing dst.
Original bug: https://bugzilla.kernel.org/show_bug.cgi?id=70681
CC: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| 438e38fadca2f6e57eeecc08326c8a95758594d4 |
|
06-Jan-2014 |
Eric Dumazet <edumazet@google.com> |
gre_offload: statically build GRE offloading support
GRO/GSO layers can be enabled on a node, even if said
node is only forwarding packets.
This patch permits GSO (and upcoming GRO) support for GRE
encapsulated packets, even if the host has no GRE tunnel setup.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: H.K. Jerry Chu <hkchu@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| 2d26f0a3c0e22f6b3096a2503d086e4b5e99d708 |
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19-Oct-2013 |
Eric Dumazet <edumazet@google.com> |
ipv4: generalize gre_handle_offloads
This patch makes gre_handle_offloads() more generic
and rename it to iptunnel_handle_offloads()
This will be used to add GSO/TSO support to IPIP tunnels.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| c50cd357887acf9fd7af3a5d492911bd825555a2 |
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01-Jul-2013 |
Daniel Borkmann <dborkman@redhat.com> |
net: gre: move GSO functions to gre_offload
Similarly to TCP/UDP offloading, move all related GRE functions to
gre_offload.c to make things more explicit and similar to the rest
of the code.
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|