diff mbox series

[xfrm-next,v10,7/8] xfrm: add support to HW update soft and hard limits

Message ID 81d3bb42285f89d4ce8b7b319e90241e4eaaf084.1670005543.git.leonro@nvidia.com (mailing list archive)
State Awaiting Upstream
Delegated to: Netdev Maintainers
Headers show
Series Extend XFRM core to allow packet offload configuration | expand

Checks

Context Check Description
netdev/tree_selection success Guessed tree name to be net-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 4351 this patch: 4351
netdev/cc_maintainers warning 1 maintainers not CCed: pabeni@redhat.com
netdev/build_clang success Errors and warnings before: 1040 this patch: 1040
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 4537 this patch: 4537
netdev/checkpatch warning CHECK: Blank lines aren't necessary before a close brace '}' WARNING: Unnecessary space before function pointer arguments
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Leon Romanovsky Dec. 2, 2022, 6:41 p.m. UTC 
From: Leon Romanovsky <leonro@nvidia.com>

Both in RX and TX, the traffic that performs IPsec packet offload
transformation is accounted by HW. It is needed to properly handle
hard limits that require to drop the packet.

It means that XFRM core needs to update internal counters with the one
that accounted by the HW, so new callbacks are introduced in this patch.

In case of soft or hard limit is occurred, the driver should call to
xfrm_state_check_expire() that will perform key rekeying exactly as
done by XFRM core.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 include/linux/netdevice.h |  1 +
 include/net/xfrm.h        | 17 +++++++++++++++++
 net/xfrm/xfrm_state.c     |  4 ++++
 3 files changed, 22 insertions(+)
diff mbox series

Patch

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 4096e3fe8e4a..29ae964e3b89 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1040,6 +1040,7 @@  struct xfrmdev_ops {
 	bool	(*xdo_dev_offload_ok) (struct sk_buff *skb,
 				       struct xfrm_state *x);
 	void	(*xdo_dev_state_advance_esn) (struct xfrm_state *x);
+	void	(*xdo_dev_state_update_curlft) (struct xfrm_state *x);
 	int	(*xdo_dev_policy_add) (struct xfrm_policy *x);
 	void	(*xdo_dev_policy_delete) (struct xfrm_policy *x);
 	void	(*xdo_dev_policy_free) (struct xfrm_policy *x);
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index b6ee14991a32..5413cdd5ad62 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -1571,6 +1571,23 @@  struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark, u32 if_id,
 struct xfrm_state *xfrm_state_lookup_byspi(struct net *net, __be32 spi,
 					      unsigned short family);
 int xfrm_state_check_expire(struct xfrm_state *x);
+#ifdef CONFIG_XFRM_OFFLOAD
+static inline void xfrm_dev_state_update_curlft(struct xfrm_state *x)
+{
+	struct xfrm_dev_offload *xdo = &x->xso;
+	struct net_device *dev = xdo->dev;
+
+	if (x->xso.type != XFRM_DEV_OFFLOAD_PACKET)
+		return;
+
+	if (dev && dev->xfrmdev_ops &&
+	    dev->xfrmdev_ops->xdo_dev_state_update_curlft)
+		dev->xfrmdev_ops->xdo_dev_state_update_curlft(x);
+
+}
+#else
+static inline void xfrm_dev_state_update_curlft(struct xfrm_state *x) {}
+#endif
 void xfrm_state_insert(struct xfrm_state *x);
 int xfrm_state_add(struct xfrm_state *x);
 int xfrm_state_update(struct xfrm_state *x);
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 2a190e85da80..cc1d0ea42672 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -570,6 +570,8 @@  static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me)
 	int err = 0;
 
 	spin_lock(&x->lock);
+	xfrm_dev_state_update_curlft(x);
+
 	if (x->km.state == XFRM_STATE_DEAD)
 		goto out;
 	if (x->km.state == XFRM_STATE_EXPIRED)
@@ -1936,6 +1938,8 @@  EXPORT_SYMBOL(xfrm_state_update);
 
 int xfrm_state_check_expire(struct xfrm_state *x)
 {
+	xfrm_dev_state_update_curlft(x);
+
 	if (!x->curlft.use_time)
 		x->curlft.use_time = ktime_get_real_seconds();