Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c
index 5611b75..189ef15 100644
--- a/net/xfrm/xfrm_device.c
+++ b/net/xfrm/xfrm_device.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* xfrm_device.c - IPsec device offloading code.
*
@@ -5,11 +6,6 @@
*
* Author:
* Steffen Klassert <steffen.klassert@secunet.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#include <linux/errno.h>
@@ -23,6 +19,60 @@
#include <linux/notifier.h>
#ifdef CONFIG_XFRM_OFFLOAD
+static void __xfrm_transport_prep(struct xfrm_state *x, struct sk_buff *skb,
+ unsigned int hsize)
+{
+ struct xfrm_offload *xo = xfrm_offload(skb);
+
+ skb_reset_mac_len(skb);
+ pskb_pull(skb, skb->mac_len + hsize + x->props.header_len);
+
+ if (xo->flags & XFRM_GSO_SEGMENT) {
+ skb_reset_transport_header(skb);
+ skb->transport_header -= x->props.header_len;
+ }
+}
+
+static void __xfrm_mode_tunnel_prep(struct xfrm_state *x, struct sk_buff *skb,
+ unsigned int hsize)
+
+{
+ struct xfrm_offload *xo = xfrm_offload(skb);
+
+ if (xo->flags & XFRM_GSO_SEGMENT)
+ skb->transport_header = skb->network_header + hsize;
+
+ skb_reset_mac_len(skb);
+ pskb_pull(skb, skb->mac_len + x->props.header_len);
+}
+
+/* Adjust pointers into the packet when IPsec is done at layer2 */
+static void xfrm_outer_mode_prep(struct xfrm_state *x, struct sk_buff *skb)
+{
+ switch (x->outer_mode.encap) {
+ case XFRM_MODE_TUNNEL:
+ if (x->outer_mode.family == AF_INET)
+ return __xfrm_mode_tunnel_prep(x, skb,
+ sizeof(struct iphdr));
+ if (x->outer_mode.family == AF_INET6)
+ return __xfrm_mode_tunnel_prep(x, skb,
+ sizeof(struct ipv6hdr));
+ break;
+ case XFRM_MODE_TRANSPORT:
+ if (x->outer_mode.family == AF_INET)
+ return __xfrm_transport_prep(x, skb,
+ sizeof(struct iphdr));
+ if (x->outer_mode.family == AF_INET6)
+ return __xfrm_transport_prep(x, skb,
+ sizeof(struct ipv6hdr));
+ break;
+ case XFRM_MODE_ROUTEOPTIMIZATION:
+ case XFRM_MODE_IN_TRIGGER:
+ case XFRM_MODE_BEET:
+ break;
+ }
+}
+
struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features, bool *again)
{
int err;
@@ -32,6 +82,7 @@
struct softnet_data *sd;
netdev_features_t esp_features = features;
struct xfrm_offload *xo = xfrm_offload(skb);
+ struct sec_path *sp;
if (!xo)
return skb;
@@ -39,7 +90,8 @@
if (!(features & NETIF_F_HW_ESP))
esp_features = features & ~(NETIF_F_SG | NETIF_F_CSUM_MASK);
- x = skb->sp->xvec[skb->sp->len - 1];
+ sp = skb_sec_path(skb);
+ x = sp->xvec[sp->len - 1];
if (xo->flags & XFRM_GRO || x->xso.flags & XFRM_OFFLOAD_INBOUND)
return skb;
@@ -76,7 +128,8 @@
}
if (!skb->next) {
- x->outer_mode->xmit(x, skb);
+ esp_features |= skb->dev->gso_partial_features;
+ xfrm_outer_mode_prep(x, skb);
xo->flags |= XFRM_DEV_RESUME;
@@ -99,12 +152,14 @@
do {
struct sk_buff *nskb = skb2->next;
- skb2->next = NULL;
+
+ esp_features |= skb->dev->gso_partial_features;
+ skb_mark_not_on_list(skb2);
xo = xfrm_offload(skb2);
xo->flags |= XFRM_DEV_RESUME;
- x->outer_mode->xmit(x, skb2);
+ xfrm_outer_mode_prep(x, skb2);
err = x->type_offload->xmit(x, skb2, esp_features);
if (!err) {
@@ -192,9 +247,13 @@
err = dev->xfrmdev_ops->xdo_dev_state_add(x);
if (err) {
+ xso->num_exthdrs = 0;
+ xso->flags = 0;
xso->dev = NULL;
dev_put(dev);
- return err;
+
+ if (err != -EOPNOTSUPP)
+ return err;
}
return 0;
@@ -212,9 +271,8 @@
return false;
if ((!dev || (dev == xfrm_dst_path(dst)->dev)) &&
- (!xdst->child->xfrm && x->type->get_mtu)) {
- mtu = x->type->get_mtu(x, xdst->child_mtu_cached);
-
+ (!xdst->child->xfrm)) {
+ mtu = xfrm_state_mtu(x, xdst->child_mtu_cached);
if (skb->len <= mtu)
goto ok;
@@ -241,7 +299,7 @@
unsigned long flags;
rcu_read_lock();
- txq = netdev_pick_tx(dev, skb, NULL);
+ txq = netdev_core_pick_tx(dev, skb, NULL);
HARD_TX_LOCK(dev, txq, smp_processor_id());
if (!netif_xmit_frozen_or_stopped(txq))