Add 2 byte padding to napi_gro_cb struct to ensure zeroed member is
aligned after flush_id member was removed in the original commit.
Fixes: 4b0ebbca3e16 ("net: gro: move L3 flush checks to tcp_gro_receive and
udp_gro_receive_segment")
Suggested-by: Geert Uytterhoeven
Signed-off-b
Jakub Kicinski wrote:
> On Tue, 14 May 2024 14:13:21 +0200 Geert Uytterhoeven wrote:
>> On Thu, May 9, 2024 at 9:09 PM Richard Gobert
>> wrote:
>>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>>> iph->id, ...) against all packets in a
Eric Dumazet wrote:
> On Thu, May 9, 2024 at 8:58 PM Richard Gobert
> wrote:
>>
>
>>
>> Interesting, I think that is indeed a bug, that exists also in the current
>> implementation.
>> NAPI_GRO_CB(p)->ip_fixedid (is_atomic before we renamed it in t
Added flush id selftests to test different cases where DF flag is set or
unset and id value changes in the following packets. All cases where the
packets should coalesce or should not coalesce are tested.
Signed-off-by: Richard Gobert
---
tools/testing/selftests/net/gro.c | 138
10.09% [kernel] [k] inet_gro_receive
2.08% [kernel] [k] tcp_gro_receive
patch applied:
6.97% [kernel] [k] inet_gro_receive
3.68% [kernel] [k] tcp_gro_receive
Signed-off-by: Richard Gobert
---
include/net/gro.h | 76 +-
net
This patch converts references of skb->network_header to napi_gro_cb's
network_offset and inner_network_offset.
Signed-off-by: Richard Gobert
---
include/net/gro.h| 9 +++--
net/ipv4/af_inet.c | 4
net/ipv4/tcp_offload.c | 3 ++-
net/ipv6/ip6_offload.c | 5 ++
P bug
- Remove more conditionals and memory fetches from inet_gro_flush
- v1:
https://lore.kernel.org/netdev/e1d22505-c5f8-4c02-a997-642484803...@gmail.com/
Richard Gobert (3):
net: gro: use cb instead of skb->network_header
net: gro: move L3 flush checks to tcp_gro_receive and
udp
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>> iph->id, ...) against all packets in a loop. These flush checks are used in
>> all merging UDP and TCP flows.
>>
>> These checks need to be
Eric Dumazet wrote:
> On Tue, May 7, 2024 at 6:30 PM Richard Gobert
> wrote:
>>
>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>> iph->id, ...) against all packets in a loop. These flush checks are used in
>> all merging UDP and TCP flo
Added flush id selftests to test different cases where DF flag is set or
unset and id value changes in the following packets. All cases where the
packets should coalesce or should not coalesce are tested.
Signed-off-by: Richard Gobert
---
tools/testing/selftests/net/gro.c | 138
10.09% [kernel] [k] inet_gro_receive
2.08% [kernel] [k] tcp_gro_receive
patch applied:
6.97% [kernel] [k] inet_gro_receive
3.68% [kernel] [k] tcp_gro_receive
Signed-off-by: Richard Gobert
---
include/net/gro.h | 78 +-
net
This patch converts references of skb->network_header to napi_gro_cb's
network_offset and inner_network_offset.
Signed-off-by: Richard Gobert
---
include/net/gro.h| 9 +++--
net/ipv4/af_inet.c | 4
net/ipv4/tcp_offload.c | 3 ++-
net/ipv6/ip6_offload.c | 5 ++
02-a997-642484803...@gmail.com/
Richard Gobert (3):
net: gro: use cb instead of skb->network_header
net: gro: move L3 flush checks to tcp_gro_receive and udp_gro_receive_segment
selftests/net: add flush id selftests
include/net/gro.h | 87 ---
net/core/gro.c
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> Added flush id selftests to test different cases where DF flag is set or
>> unset and id value changes in the following packets. All cases where the
>> packets should coalesce or should not coalesce are tested.
>>
>&
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>> iph->id, ...) against all packets in a loop. These flush checks are used in
>> all merging UDP and TCP flows.
>>
>> These checks need to be
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> This patch converts references of skb->network_header to napi_gro_cb's
>> network_offset and inner_network_offset.
>>
>> Signed-off-by: Richard Gobert
>> ---
>> include/net/gro.h| 9 +++-
Added flush id selftests to test different cases where DF flag is set or
unset and id value changes in the following packets. All cases where the
packets should coalesce or should not coalesce are tested.
Signed-off-by: Richard Gobert
---
tools/testing/selftests/net/gro.c | 147
09% [kernel] [k] inet_gro_receive
2.08% [kernel] [k] tcp_gro_receive
patch applied:
6.97% [kernel] [k] inet_gro_receive
3.68% [kernel] [k] tcp_gro_receive
Signed-off-by: Richard Gobert
---
include/net/gro.h | 66 ++
net
This patch converts references of skb->network_header to napi_gro_cb's
network_offset and inner_network_offset.
Signed-off-by: Richard Gobert
---
include/net/gro.h| 9 +++--
net/ipv4/af_inet.c | 4
net/ipv4/tcp_offload.c | 3 ++-
net/ipv6/ip6_offload.c | 5 ++
.kernel.org/netdev/e1d22505-c5f8-4c02-a997-642484803...@gmail.com/
Richard Gobert (3):
net: gro: use cb instead of skb->network_header
net: gro: move L3 flush checks to tcp_gro_receive and udp_gro_receive_segment
selftests/net: add flush id selftests
include/net/gro.h | 75 +
Paolo Abeni wrote:
> On Fri, 2024-04-12 at 17:55 +0200, Richard Gobert wrote:
>> This patch adds network_offset and inner_network_offset to napi_gro_cb, and
>> makes sure both are set correctly. In the common path there's only one
>> write (skb_gro_reset_offset).
&g
Paolo Abeni wrote:
> On Tue, 2024-04-16 at 11:21 +0200, Paolo Abeni wrote:
>> On Fri, 2024-04-12 at 17:55 +0200, Richard Gobert wrote:
>>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>>> iph->id, ...) against all packets in a loo
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> Added flush id selftests to test different cases where DF flag is set or
>> unset and id value changes in the following packets. All cases where the
>> packets should coalesce or should not coalesce are tested.
>>
>&
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> This patch adds network_offset and inner_network_offset to napi_gro_cb, and
>> makes sure both are set correctly. In the common path there's only one
>> write (skb_gro_reset_offset).
>>
>> Signed-off-by:
Added flush id selftests to test different cases where DF flag is set or
unset and id value changes in the following packets. All cases where the
packets should coalesce or should not coalesce are tested.
Signed-off-by: Richard Gobert
---
tools/testing/selftests/net/gro.c | 144
6.97% [kernel] [k] inet_gro_receive
3.68% [kernel] [k] tcp_gro_receive
Signed-off-by: Richard Gobert
---
include/net/gro.h | 66 ++
net/core/gro.c | 4 ---
net/ipv4/af_inet.c | 41 +-
net/ipv4/tcp_off
This patch adds network_offset and inner_network_offset to napi_gro_cb, and
makes sure both are set correctly. In the common path there's only one
write (skb_gro_reset_offset).
Signed-off-by: Richard Gobert
---
drivers/net/geneve.c | 1 +
drivers/net/vxlan/vxlan_core.c
ore.kernel.org/all/2ce1600b-e733-448b-91ac-9d0ae2b86...@gmail.com/
v1 -> v2:
- Pass p_off in *_gro_complete to fix UDP bug
- Remove more conditionals and memory fetches from inet_gro_flush
- v1:
https://lore.kernel.org/netdev/e1d22505-c5f8-4c02-a997-642484803...@gmail.com/
Richard Gobert
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> Willem de Bruijn wrote:
>>> Richard Gobert wrote:
>>>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>>>> iph->id, ...) against all packets in a loop. These flush checks are
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>> iph->id, ...) against all packets in a loop. These flush checks are used
>> currently only in tcp flows in GRO.
>>
>> These checks need to
Willem de Bruijn wrote:
> And the latter parse the network header for total_len/payload_len, to
> find their original offset.
>
> It's also a bit of a hack. But a lot smaller patch, probably.
While producing a smaller change - this is a bit of a hacky code change.
My initial idea was to use netw
Added flush id selftests to test different cases where DF flag is set or
unset and id value changes in the following packets. All cases where the
packets should coalesce or should not coalesce are tested.
Signed-off-by: Richard Gobert
---
tools/testing/selftests/net/gro.c | 144
_receive is included because of -g, in this case GRO is just
overhead)
net-next:
1.26% [kernel] [k] inet_gro_receive
patch applied:
0.85% [kernel] [k] inet_gro_receive
Signed-off-by: Richard Gobert
---
include/net/gro.h | 66 ++
net
This patch adds network_offset and inner_network_offset to napi_gro_cb, and
makes sure both are set correctly. In the common path there's only one
write (skb_gro_reset_offset).
Signed-off-by: Richard Gobert
---
drivers/net/geneve.c | 1 +
drivers/net/vxlan/vxlan_core.c
Add local address bind support to existing udpgro_fwd.sh vxlan selftest, to
ensure UDP socket lookup in GRO is working.
Signed-off-by: Richard Gobert
---
tools/testing/selftests/net/udpgro_fwd.sh | 10 +++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/tools/testing
bytes bytes bytessecs.10^6bits/sec
131072 16384 163845.01 2877.38
Fixes: 57c67ff4bd92 ("udp: additional GRO support")
Suggested-by: Eric Dumazet
Signed-off-by: Richard Gobert
---
drivers/net/geneve.c | 7 ---
drivers/net/vxlan/vxlan_core.c |
plain (non-fraglisted) UDP GRO
packets")
Signed-off-by: Richard Gobert
---
net/ipv4/udp_offload.c | 13 -
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
index 3498dd1d0694..1f4e08f43c4b 100644
--- a/net/ipv4/udp_offlo
.kernel.org/netdev/e1d22505-c5f8-4c02-a997-642484803...@gmail.com/
Richard Gobert (6):
net: gro: add flush check in udp_gro_receive_segment
net: gro: add p_off param in *_gro_complete
selftests/net: add local address bind in vxlan selftest
net: gro: add {inner_}network_offset to napi_gro_cb
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> This patch adds network_offset and inner_network_offset to napi_gro_cb, and
>> makes sure both are set correctly. In the common path there's only one
>> write (skb_gro_reset_offset).
>>
>> Signed-off-by:
Paolo Abeni wrote:
> On Tue, 2024-03-26 at 18:25 +0100, Richard Gobert wrote:
>> Paolo Abeni wrote:
>>> Hi,
>>>
>>> On Tue, 2024-03-26 at 16:02 +0100, Richard Gobert wrote:
>>>> This patch is meaningful by itself - removing checks against non-rel
Paolo Abeni wrote:
> Hi,
>
> On Tue, 2024-03-26 at 16:02 +0100, Richard Gobert wrote:
>> This patch is meaningful by itself - removing checks against non-relevant
>> packets and making the flush/flush_id checks in a single place.
>
> I'm personally not sure this p
Willem de Bruijn wrote:> One issue: if the do this move in net/next, then a
later fix that
> relies on it cannot be backporter to older stable kernels.
>
I understand. I can either add a first commit to this series which fixes
the bug by checking ->flush and ->flush_id in udp_gro_receive_segment
Eric Dumazet wrote:
>
> I do not understand this patch 4/4 then.
>
> Why bother moving stuff in net/ipv4/tcp_offload.c if we plan to move
> it back to where it belongs ?
Willem also pointed that out, and I agree. I'll post a v5 and move this
functionality to gro.c. Currently, gro_network_flush w
Eric Dumazet wrote:
> On Mon, Mar 25, 2024 at 7:27 PM Richard Gobert
> wrote:
>>
>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>> iph->id, ...) against all packets in a loop. These flush checks are used
>> currently only in tcp flows i
Willem de Bruijn wrote:
> My main concern is moving this code to tcp_offload.c, if it likely
> soon will be moved elsewhere again.
Got it. I'll move these functions to gro.c and post a v5 with Jakub's
requests as well.
Willem de Bruijn wrote:
> In v3 we discussed how the flush on network layer differences (like
> TTL or ToS) currently only affect the TCP GRO path, but should apply
> more broadly.
>
> We agreed that it is fine to leave that to a separate patch series.
>
> But seeing this patch, it introduces a l
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> Eric Dumazet wrote:
>>> On Sat, Mar 9, 2024 at 4:35 PM Richard Gobert
>>> wrote:
>>>>
>>>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>>>> iph->id, ...) a
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>> iph->id, ...) against all packets in a loop. These flush checks are
>> relevant only to tcp flows, and as such they're used to determine whether
Eric Dumazet wrote:
> On Sat, Mar 9, 2024 at 4:35 PM Richard Gobert
> wrote:
>>
>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>> iph->id, ...) against all packets in a loop. These flush checks are
>> relevant only to tcp flows, and
6% [kernel] [k] inet_gro_receive
patch applied:
0.85% [kernel] [k] inet_gro_receive
udpgro_bench.sh single connection GRO improvement:
net-next:
0.76% [kernel] [k] inet_gro_receive
patch applied:
0.61% [kernel] [k] inet_gro_receive
Signed-off-by: Richard Gobert
---
includ
This patch adds network_offset and inner_network_offset to napi_gro_cb, and
makes sure both are set correctly. In the common path there's only one
write (skb_gro_reset_offset).
Signed-off-by: Richard Gobert
---
include/net/gro.h | 18 --
net/8021q/vlan_core.c | 2 ++
Add local address bind support to existing udpgro_fwd.sh vxlan selftest, to
ensure UDP socket lookup in GRO is working.
Signed-off-by: Richard Gobert
---
tools/testing/selftests/net/udpgro_fwd.sh | 10 +++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/tools/testing
bytes bytes bytessecs.10^6bits/sec
131072 16384 163845.01 2877.38
Fixes: 57c67ff4bd92 ("udp: additional GRO support")
Suggested-by: Eric Dumazet
Signed-off-by: Richard Gobert
---
drivers/net/geneve.c | 7 ---
drivers/net/vxlan/vxlan_core.c |
el.org/netdev/2ce1600b-e733-448b-91ac-9d0ae2b86...@gmail.com/
v1 -> v2:
- Pass p_off in *_gro_complete to fix UDP bug
- Remove more conditionals and memory fetches from inet_gro_flush
- v1:
https://lore.kernel.org/netdev/e1d22505-c5f8-4c02-a997-642484803...@gmail.com/
Richard Gobert (4):
Eric Dumazet wrote:
> On Thu, Mar 7, 2024 at 2:28 PM Richard Gobert
> wrote:
>>
>> This patch sets network_header and inner_network_header to their respective
>> values during the receive phase of GRO. This allows us to use
>> inner_network_header later on in GRO.
6% [kernel] [k] inet_gro_receive
patch applied:
0.85% [kernel] [k] inet_gro_receive
udpgro_bench.sh single connection GRO improvement:
net-next:
0.76% [kernel] [k] inet_gro_receive
patch applied:
0.61% [kernel] [k] inet_gro_receive
Signed-off-by: Richard Gobert
---
includ
: Richard Gobert
---
include/net/gro.h | 13 +++--
net/8021q/vlan_core.c | 5 +
net/ethernet/eth.c | 1 +
net/ipv4/af_inet.c | 9 ++---
net/ipv4/gre_offload.c | 1 +
net/ipv6/ip6_offload.c | 12 +---
6 files changed, 25 insertions(+), 16 deletions(-)
diff --git
Add local address bind support to existing udpgro_fwd.sh vxlan selftest, to
ensure UDP socket lookup in GRO is working.
Signed-off-by: Richard Gobert
---
tools/testing/selftests/net/udpgro_fwd.sh | 10 +++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/tools/testing
bytes bytes bytessecs.10^6bits/sec
131072 16384 163845.01 2877.38
Fixes: 57c67ff4bd92 ("udp: additional GRO support")
Suggested-by: Eric Dumazet
Signed-off-by: Richard Gobert
---
drivers/net/geneve.c | 7 ---
drivers/net/vxlan/vxlan_core.c |
org/netdev/e1d22505-c5f8-4c02-a997-642484803...@gmail.com/
Richard Gobert (4):
net: gro: add p_off param in *_gro_complete
selftests/net: add local address bind in vxlan selftest
net: gro: set inner_network_header in receive phase
net: gro: move L3 flush checks to tcp_gro_receive
drivers/
Eric Dumazet wrote:
> On Thu, Feb 29, 2024 at 2:22 PM Richard Gobert
> wrote:
>>
>>
>>
>> Eric Dumazet wrote:
>>>
>>> My intuition is that this patch has a high cost for normal GRO processing.
>>> SW-GRO is already a bottleneck on ARM c
Eric Dumazet wrote:
>
> My intuition is that this patch has a high cost for normal GRO processing.
> SW-GRO is already a bottleneck on ARM cores in smart NICS.
>
> I would suggest instead using parameters to give both the nhoff and thoff
> values
> this would avoid many conditionals in the fa
% [kernel] [k] inet_gro_receive
Signed-off-by: Richard Gobert
---
include/net/gro.h | 9 ++
net/core/gro.c | 3 --
net/ipv4/af_inet.c | 36 -
net/ipv4/tcp_offload.c | 71 ++
net/ipv6/ip6_offload.c |
Add local address bind support to existing udpgro_fwd.sh vxlan selftest, to
ensure UDP socket lookup in GRO is working.
Signed-off-by: Richard Gobert
---
tools/testing/selftests/net/udpgro_fwd.sh | 10 +++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/tools/testing
r_network_header offset during the GRO complete phase,
depending on skb->encapsulation.
Fixes: 57c67ff4bd92 ("udp: additional GRO support")
Signed-off-by: Richard Gobert
---
include/net/gro.h| 14 +-
net/8021q/vlan_core.c| 3 +++
net/ipv4/af_inet.c | 8 +
://lore.kernel.org/netdev/df300a49-7811-4126-a56a-a77100c88...@gmail.com/).
Richard Gobert (3):
net: gro: set {inner_,}network_header in receive phase
selftests/net: add local address bind in vxlan selftest
net: gro: move L3 flush checks to tcp_gro_receive
include/net/gro.h
.
I changed the receive socket filter to accept a packet with one extension
header. This change exposed a bug in the fragment test -- the old BPF did
not accept the fragment packet. I updated correct_num_packets in the
fragment test accordingly.
Signed-off-by: Richard Gobert
Reviewed-by: Willem de
kets with ext headers.
Signed-off-by: Richard Gobert
Reviewed-by: Willem de Bruijn
Reviewed-by: David Ahern
---
net/ipv6/ip6_offload.c | 51 +-
1 file changed, 41 insertions(+), 10 deletions(-)
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offloa
This commit adds net_offload to IPv6 Hop-by-Hop extension headers (as it
is done for routing and dstopts) since it is supported in GSO and GRO.
This allows to remove specific HBH conditionals in GSO and GRO when
pulling and parsing an incoming packet.
Signed-off-by: Richard Gobert
Reviewed-by
header payloads do not coalesce.
- Added more info in the second commit message regarding the code changes.
- v1:
https://lore.kernel.org/netdev/f4eff69d-3917-4c42-8c6b-d09597ac4...@gmail.com/
Richard Gobert (3):
net: gso: add HBH extension header offload support
net: gro: parse ipv6 ext h
Eric Dumazet wrote:
>
>
> Hmm... I was looking at
>
> skb_checksum_setup_ipv6() , it uses skb_maybe_pull_tail( ...
> sizeof(struct ipv6_opt_hdr))
> ipv6_skip_exthdr() also uses sizeof(struct ipv6_opt_hdr)
> ip6_tnl_parse_tlv_enc_lim also uses the same.
> hbh_mt6(), ipv6header_mt6(), .. same..
Eric Dumazet wrote:
> On Tue, Jan 2, 2024 at 2:25 PM Richard Gobert
> wrote:
>>
>> The existing code always pulls the IPv6 header and sets the transport
>> offset initially. Then optionally again pulls any extension headers in
>> ipv6_gso_pull_exthdrs and sets
.
I changed the receive socket filter to accept a packet with one extension
header. This change exposed a bug in the fragment test -- the old BPF did
not accept the fragment packet. I updated correct_num_packets in the
fragment test accordingly.
Signed-off-by: Richard Gobert
---
tools/testing
kets with ext headers.
Signed-off-by: Richard Gobert
Reviewed-by: Willem de Bruijn
---
include/net/ipv6.h | 1 +
net/ipv6/ip6_offload.c | 51 +-
2 files changed, 42 insertions(+), 10 deletions(-)
diff --git a/include/net/ipv6.h b/include/net/ipv
This commit adds net_offload to IPv6 Hop-by-Hop extension headers (as it
is done for routing and dstopts) since it is supported in GSO and GRO.
This allows to remove specific HBH conditionals in GSO and GRO when
pulling and parsing an incoming packet.
Signed-off-by: Richard Gobert
Reviewed-by
ith different extension
header payloads do not coalesce.
- Added more info in the second commit message regarding the code changes.
- v1:
https://lore.kernel.org/netdev/f4eff69d-3917-4c42-8c6b-d09597ac4...@gmail.com/
Richard Gobert (3):
net: gso: add HBH extension header offload supp
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> Currently there is no test which checks that IPv6 extension header packets
>> successfully coalesce. This commit adds a test, which verifies two IPv6
>> packets with HBH extension headers do coalesce.
>>
>> I
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> This commit utilizes a new helper function, ipv6_gro_pull_exthdrs, which
>> is used in ipv6_gro_receive to pull ipv6 ext headers instead of
>> ipv6_gso_pull_exthdrs. To use ipv6_gso_pull_exthdr, pskb_pull and
>> _
a bug in the fragment test -- the old BPF did
not accept the fragment packet. I updated correct_num_packets in the
fragment test accordingly.
Signed-off-by: Richard Gobert
---
tools/testing/selftests/net/gro.c | 78 ---
1 file changed, 71 insertions(+), 7 deletions
around the call to ipv6_gso_pull_exthdrs and
enables the frag0 fast path in IPv6 packets with ext headers.
Signed-off-by: Richard Gobert
---
net/ipv6/ip6_offload.c | 51 +-
1 file changed, 41 insertions(+), 10 deletions(-)
diff --git a/net/ipv6/ip6_offload.c
This commit adds net_offload to IPv6 Hop-by-Hop extension headers (as it
is done for routing and dstopts) since it is supported in GSO and GRO.
This allows to remove specific HBH conditionals in GSO and GRO when
pulling and parsing an incoming packet.
Signed-off-by: Richard Gobert
---
net/ipv6
- Added a utility function to support frag0 fast path in ipv6_gro_receive
- Added self-test for IPv6 packets with extension headers in GRO
Richard
Richard Gobert (3):
net: gso: add HBH extension header offload support
net: gro: parse ipv6 ext headers without frag0 invalidation
selftests/net
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