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xfrm: add new device offload acquire flag

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During XFRM acquire flow, a default SA is created to be updated later,
once acquire netlink message is handled in user space. When the relevant
policy is offloaded this default SA is also offloaded to IPsec offload
supporting driver, however this SA does not have context suitable for
offloading in HW, nor is interesting to offload to HW, consequently needs
a special driver handling apart from other offloaded SA(s).
Add a special flag that marks such SA so driver can handle it correctly.

Signed-off-by: Raed Salem <raeds@nvidia.com>
Link: https://lore.kernel.org/r/f5da0834d8c6b82ab9ba38bd4a0c55e71f0e3dab.1678714336.git.leon@kernel.org
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Raed Salem 2023-03-14 10:58:39 +02:00 committed by Leon Romanovsky
parent fa5aa2f890
commit e0aeb9b90a
2 changed files with 6 additions and 0 deletions
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5
include/net/xfrm.h
View file

@ -138,6 +138,10 @@ enum {
XFRM_DEV_OFFLOAD_PACKET,
};
enum {
XFRM_DEV_OFFLOAD_FLAG_ACQ = 1,
};
struct xfrm_dev_offload {
struct net_device *dev;
netdevice_tracker dev_tracker;
@ -145,6 +149,7 @@ struct xfrm_dev_offload {
unsigned long offload_handle;
u8 dir : 2;
u8 type : 2;
u8 flags : 2;
};
struct xfrm_mode {

1
net/xfrm/xfrm_state.c
View file

@ -1272,6 +1272,7 @@ xfrm_state_find(const xfrm_address_t *daddr, const xfrm_address_t *saddr,
xso->dir = xdo->dir;
xso->dev = xdo->dev;
xso->real_dev = xdo->real_dev;
xso->flags = XFRM_DEV_OFFLOAD_FLAG_ACQ;
netdev_tracker_alloc(xso->dev, &xso->dev_tracker,
GFP_ATOMIC);
error = xso->dev->xfrmdev_ops->xdo_dev_state_add(x, NULL);