kernel/net/ipv4/esp4_offload.c, branch linux-6.2.y

xfrm: replay: Fix ESN wrap around for GSO

2022-10-19T07:00:53Z

When using GSO it can happen that the wrong seq_hi is used for the last packets before the wrap around. This can lead to double usage of a sequence number. To avoid this, we should serialize this last GSO packet. Fixes: d7dbefc45cf5 ("xfrm: Add xfrm_replay_overflow functions for offloading") Co-developed-by: Steffen Klassert Signed-off-by: Christian Langrock Signed-off-by: Steffen Klassert

esp: choose the correct inner protocol for GSO on inter address family tunnels

2022-08-29T08:20:58Z

Commit 23c7f8d7989e ("net: Fix esp GSO on inter address family tunnels.") is incomplete. It passes to skb_eth_gso_segment the protocol for the outer IP version, instead of the inner IP version, so we end up calling inet_gso_segment on an inner IPv6 packet and ipv6_gso_segment on an inner IPv4 packet and the packets are dropped. This patch completes the fix by selecting the correct protocol based on the inner mode's family. Fixes: c35fe4106b92 ("xfrm: Add mode handlers for IPsec on layer 2") Signed-off-by: Sabrina Dubroca Signed-off-by: Steffen Klassert

net: Fix esp GSO on inter address family tunnels.

2022-03-07T12:14:04Z

The esp tunnel GSO handlers use skb_mac_gso_segment to push the inner packet to the segmentation handlers. However, skb_mac_gso_segment takes the Ethernet Protocol ID from 'skb->protocol' which is wrong for inter address family tunnels. We fix this by introducing a new skb_eth_gso_segment function. This function can be used if it is necessary to pass the Ethernet Protocol ID directly to the segmentation handler. First users of this function will be the esp4 and esp6 tunnel segmentation handlers. Fixes: c35fe4106b92 ("xfrm: Add mode handlers for IPsec on layer 2") Signed-off-by: Steffen Klassert

esp: Fix BEET mode inter address family tunneling on GSO

2022-03-07T12:14:03Z

The xfrm{4,6}_beet_gso_segment() functions did not correctly set the SKB_GSO_IPXIP4 and SKB_GSO_IPXIP6 gso types for the address family tunneling case. Fix this by setting these gso types. Fixes: 384a46ea7bdc7 ("esp4: add gso_segment for esp4 beet mode") Fixes: 7f9e40eb18a99 ("esp6: add gso_segment for esp6 beet mode") Signed-off-by: Steffen Klassert

net: move gro definitions to include/net/gro.h

2021-11-16T13:16:54Z

include/linux/netdevice.h became too big, move gro stuff into include/net/gro.h Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller

xfrm: remove description from xfrm_type struct

2021-06-09T07:38:52Z

Its set but never read. Reduces size of xfrm_type to 64 bytes on 64bit. Signed-off-by: Florian Westphal Signed-off-by: Steffen Klassert

esp: drop unneeded assignment in esp4_gro_receive()

2021-05-14T11:44:39Z

Making '!=' operation with 0 directly after calling the function xfrm_parse_spi() is more efficient, assignment to err is redundant. Eliminate the following clang_analyzer warning: net/ipv4/esp4_offload.c:41:7: warning: Although the value stored to 'err' is used in the enclosing expression, the value is never actually read from 'err' No functional change, only more efficient. Reported-by: Abaci Robot Signed-off-by: Yang Li Signed-off-by: Steffen Klassert

xfrm: Provide private skb extensions for segmented and hw offloaded ESP packets

2021-03-29T07:14:12Z

Commit 94579ac3f6d0 ("xfrm: Fix double ESP trailer insertion in IPsec crypto offload.") added a XFRM_XMIT flag to avoid duplicate ESP trailer insertion on HW offload. This flag is set on the secpath that is shared amongst segments. This lead to a situation where some segments are not transformed correctly when segmentation happens at layer 3. Fix this by using private skb extensions for segmented and hw offloaded ESP packets. Fixes: 94579ac3f6d0 ("xfrm: Fix double ESP trailer insertion in IPsec crypto offload.") Signed-off-by: Steffen Klassert

esp: delete NETIF_F_SCTP_CRC bit from features for esp offload

2021-03-22T06:43:31Z

Now in esp4/6_gso_segment(), before calling inner proto .gso_segment, NETIF_F_CSUM_MASK bits are deleted, as HW won't be able to do the csum for inner proto due to the packet encrypted already. So the UDP/TCP packet has to do the checksum on its own .gso_segment. But SCTP is using CRC checksum, and for that NETIF_F_SCTP_CRC should be deleted to make SCTP do the csum in own .gso_segment as well. In Xiumei's testing with SCTP over IPsec/veth, the packets are kept dropping due to the wrong CRC checksum. Reported-by: Xiumei Mu Fixes: 7862b4058b9f ("esp: Add gso handlers for esp4 and esp6") Signed-off-by: Xin Long Signed-off-by: Steffen Klassert

net: Simplify the calculation of variables

2021-01-27T10:49:55Z

Fix the following coccicheck warnings: ./net/ipv4/esp4_offload.c:288:32-34: WARNING !A || A && B is equivalent to !A || B. Reported-by: Abaci Robot Signed-off-by: Jiapeng Zhong Signed-off-by: Steffen Klassert