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-rw-r--r--net/xfrm/espintcp.c8
-rw-r--r--net/xfrm/xfrm_device.c53
-rw-r--r--net/xfrm/xfrm_input.c28
-rw-r--r--net/xfrm/xfrm_interface.c215
-rw-r--r--net/xfrm/xfrm_ipcomp.c11
-rw-r--r--net/xfrm/xfrm_output.c4
-rw-r--r--net/xfrm/xfrm_policy.c66
-rw-r--r--net/xfrm/xfrm_replay.c10
-rw-r--r--net/xfrm/xfrm_state.c74
-rw-r--r--net/xfrm/xfrm_user.c451
10 files changed, 621 insertions, 299 deletions
diff --git a/net/xfrm/espintcp.c b/net/xfrm/espintcp.c
index 1f08ebf7d80c..29a540dcb5a7 100644
--- a/net/xfrm/espintcp.c
+++ b/net/xfrm/espintcp.c
@@ -91,7 +91,7 @@ static void espintcp_rcv(struct strparser *strp, struct sk_buff *skb)
}
/* remove header, leave non-ESP marker/SPI */
- if (!__pskb_pull(skb, rxm->offset + 2)) {
+ if (!pskb_pull(skb, rxm->offset + 2)) {
XFRM_INC_STATS(sock_net(strp->sk), LINUX_MIB_XFRMINERROR);
kfree_skb(skb);
return;
@@ -131,7 +131,7 @@ static int espintcp_parse(struct strparser *strp, struct sk_buff *skb)
}
static int espintcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
- int nonblock, int flags, int *addr_len)
+ int flags, int *addr_len)
{
struct espintcp_ctx *ctx = espintcp_getctx(sk);
struct sk_buff *skb;
@@ -139,8 +139,6 @@ static int espintcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
int copied;
int off = 0;
- flags |= nonblock ? MSG_DONTWAIT : 0;
-
skb = __skb_recv_datagram(sk, &ctx->ike_queue, flags, &off, &err);
if (!skb) {
if (err == -EAGAIN && sk->sk_shutdown & RCV_SHUTDOWN)
@@ -170,7 +168,7 @@ int espintcp_queue_out(struct sock *sk, struct sk_buff *skb)
{
struct espintcp_ctx *ctx = espintcp_getctx(sk);
- if (skb_queue_len(&ctx->out_queue) >= netdev_max_backlog)
+ if (skb_queue_len(&ctx->out_queue) >= READ_ONCE(netdev_max_backlog))
return -ENOBUFS;
__skb_queue_tail(&ctx->out_queue, skb);
diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c
index 3fa066419d37..5f5aafd418af 100644
--- a/net/xfrm/xfrm_device.c
+++ b/net/xfrm/xfrm_device.c
@@ -117,7 +117,7 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur
sp = skb_sec_path(skb);
x = sp->xvec[sp->len - 1];
- if (xo->flags & XFRM_GRO || x->xso.flags & XFRM_OFFLOAD_INBOUND)
+ if (xo->flags & XFRM_GRO || x->xso.dir == XFRM_DEV_OFFLOAD_IN)
return skb;
/* This skb was already validated on the upper/virtual dev */
@@ -143,7 +143,7 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur
segs = skb_gso_segment(skb, esp_features);
if (IS_ERR(segs)) {
kfree_skb(skb);
- atomic_long_inc(&dev->tx_dropped);
+ dev_core_stats_tx_dropped_inc(dev);
return NULL;
} else {
consume_skb(skb);
@@ -207,21 +207,31 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur
EXPORT_SYMBOL_GPL(validate_xmit_xfrm);
int xfrm_dev_state_add(struct net *net, struct xfrm_state *x,
- struct xfrm_user_offload *xuo)
+ struct xfrm_user_offload *xuo,
+ struct netlink_ext_ack *extack)
{
int err;
struct dst_entry *dst;
struct net_device *dev;
- struct xfrm_state_offload *xso = &x->xso;
+ struct xfrm_dev_offload *xso = &x->xso;
xfrm_address_t *saddr;
xfrm_address_t *daddr;
- if (!x->type_offload)
+ if (!x->type_offload) {
+ NL_SET_ERR_MSG(extack, "Type doesn't support offload");
return -EINVAL;
+ }
/* We don't yet support UDP encapsulation and TFC padding. */
- if (x->encap || x->tfcpad)
+ if (x->encap || x->tfcpad) {
+ NL_SET_ERR_MSG(extack, "Encapsulation and TFC padding can't be offloaded");
return -EINVAL;
+ }
+
+ if (xuo->flags & ~(XFRM_OFFLOAD_IPV6 | XFRM_OFFLOAD_INBOUND)) {
+ NL_SET_ERR_MSG(extack, "Unrecognized flags in offload request");
+ return -EINVAL;
+ }
dev = dev_get_by_index(net, xuo->ifindex);
if (!dev) {
@@ -253,6 +263,7 @@ int xfrm_dev_state_add(struct net *net, struct xfrm_state *x,
if (x->props.flags & XFRM_STATE_ESN &&
!dev->xfrmdev_ops->xdo_dev_state_advance_esn) {
+ NL_SET_ERR_MSG(extack, "Device doesn't support offload with ESN");
xso->dev = NULL;
dev_put(dev);
return -EINVAL;
@@ -261,19 +272,23 @@ int xfrm_dev_state_add(struct net *net, struct xfrm_state *x,
xso->dev = dev;
netdev_tracker_alloc(dev, &xso->dev_tracker, GFP_ATOMIC);
xso->real_dev = dev;
- xso->num_exthdrs = 1;
- xso->flags = xuo->flags;
+
+ if (xuo->flags & XFRM_OFFLOAD_INBOUND)
+ xso->dir = XFRM_DEV_OFFLOAD_IN;
+ else
+ xso->dir = XFRM_DEV_OFFLOAD_OUT;
err = dev->xfrmdev_ops->xdo_dev_state_add(x);
if (err) {
- xso->num_exthdrs = 0;
- xso->flags = 0;
xso->dev = NULL;
+ xso->dir = 0;
xso->real_dev = NULL;
- dev_put_track(dev, &xso->dev_tracker);
+ netdev_put(dev, &xso->dev_tracker);
- if (err != -EOPNOTSUPP)
+ if (err != -EOPNOTSUPP) {
+ NL_SET_ERR_MSG(extack, "Device failed to offload this state");
return err;
+ }
}
return 0;
@@ -380,16 +395,6 @@ static int xfrm_api_check(struct net_device *dev)
return NOTIFY_DONE;
}
-static int xfrm_dev_register(struct net_device *dev)
-{
- return xfrm_api_check(dev);
-}
-
-static int xfrm_dev_feat_change(struct net_device *dev)
-{
- return xfrm_api_check(dev);
-}
-
static int xfrm_dev_down(struct net_device *dev)
{
if (dev->features & NETIF_F_HW_ESP)
@@ -404,10 +409,10 @@ static int xfrm_dev_event(struct notifier_block *this, unsigned long event, void
switch (event) {
case NETDEV_REGISTER:
- return xfrm_dev_register(dev);
+ return xfrm_api_check(dev);
case NETDEV_FEAT_CHANGE:
- return xfrm_dev_feat_change(dev);
+ return xfrm_api_check(dev);
case NETDEV_DOWN:
case NETDEV_UNREGISTER:
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 144238a50f3d..97074f6f2bde 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -20,11 +20,13 @@
#include <net/xfrm.h>
#include <net/ip_tunnels.h>
#include <net/ip6_tunnel.h>
+#include <net/dst_metadata.h>
#include "xfrm_inout.h"
struct xfrm_trans_tasklet {
- struct tasklet_struct tasklet;
+ struct work_struct work;
+ spinlock_t queue_lock;
struct sk_buff_head queue;
};
@@ -669,7 +671,6 @@ resume:
x->curlft.bytes += skb->len;
x->curlft.packets++;
- x->curlft.use_time = ktime_get_real_seconds();
spin_unlock(&x->lock);
@@ -720,7 +721,8 @@ resume:
sp = skb_sec_path(skb);
if (sp)
sp->olen = 0;
- skb_dst_drop(skb);
+ if (skb_valid_dst(skb))
+ skb_dst_drop(skb);
gro_cells_receive(&gro_cells, skb);
return 0;
} else {
@@ -738,7 +740,8 @@ resume:
sp = skb_sec_path(skb);
if (sp)
sp->olen = 0;
- skb_dst_drop(skb);
+ if (skb_valid_dst(skb))
+ skb_dst_drop(skb);
gro_cells_receive(&gro_cells, skb);
return err;
}
@@ -761,18 +764,22 @@ int xfrm_input_resume(struct sk_buff *skb, int nexthdr)
}
EXPORT_SYMBOL(xfrm_input_resume);
-static void xfrm_trans_reinject(struct tasklet_struct *t)
+static void xfrm_trans_reinject(struct work_struct *work)
{
- struct xfrm_trans_tasklet *trans = from_tasklet(trans, t, tasklet);
+ struct xfrm_trans_tasklet *trans = container_of(work, struct xfrm_trans_tasklet, work);
struct sk_buff_head queue;
struct sk_buff *skb;
__skb_queue_head_init(&queue);
+ spin_lock_bh(&trans->queue_lock);
skb_queue_splice_init(&trans->queue, &queue);
+ spin_unlock_bh(&trans->queue_lock);
+ local_bh_disable();
while ((skb = __skb_dequeue(&queue)))
XFRM_TRANS_SKB_CB(skb)->finish(XFRM_TRANS_SKB_CB(skb)->net,
NULL, skb);
+ local_bh_enable();
}
int xfrm_trans_queue_net(struct net *net, struct sk_buff *skb,
@@ -783,15 +790,17 @@ int xfrm_trans_queue_net(struct net *net, struct sk_buff *skb,
trans = this_cpu_ptr(&xfrm_trans_tasklet);
- if (skb_queue_len(&trans->queue) >= netdev_max_backlog)
+ if (skb_queue_len(&trans->queue) >= READ_ONCE(netdev_max_backlog))
return -ENOBUFS;
BUILD_BUG_ON(sizeof(struct xfrm_trans_cb) > sizeof(skb->cb));
XFRM_TRANS_SKB_CB(skb)->finish = finish;
XFRM_TRANS_SKB_CB(skb)->net = net;
+ spin_lock_bh(&trans->queue_lock);
__skb_queue_tail(&trans->queue, skb);
- tasklet_schedule(&trans->tasklet);
+ spin_unlock_bh(&trans->queue_lock);
+ schedule_work(&trans->work);
return 0;
}
EXPORT_SYMBOL(xfrm_trans_queue_net);
@@ -818,7 +827,8 @@ void __init xfrm_input_init(void)
struct xfrm_trans_tasklet *trans;
trans = &per_cpu(xfrm_trans_tasklet, i);
+ spin_lock_init(&trans->queue_lock);
__skb_queue_head_init(&trans->queue);
- tasklet_setup(&trans->tasklet, xfrm_trans_reinject);
+ INIT_WORK(&trans->work, xfrm_trans_reinject);
}
}
diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c
index 57448fc519fc..5a67b120c4db 100644
--- a/net/xfrm/xfrm_interface.c
+++ b/net/xfrm/xfrm_interface.c
@@ -41,6 +41,7 @@
#include <net/addrconf.h>
#include <net/xfrm.h>
#include <net/net_namespace.h>
+#include <net/dst_metadata.h>
#include <net/netns/generic.h>
#include <linux/etherdevice.h>
@@ -56,6 +57,89 @@ static const struct net_device_ops xfrmi_netdev_ops;
struct xfrmi_net {
/* lists for storing interfaces in use */
struct xfrm_if __rcu *xfrmi[XFRMI_HASH_SIZE];
+ struct xfrm_if __rcu *collect_md_xfrmi;
+};
+
+static const struct nla_policy xfrm_lwt_policy[LWT_XFRM_MAX + 1] = {
+ [LWT_XFRM_IF_ID] = NLA_POLICY_MIN(NLA_U32, 1),
+ [LWT_XFRM_LINK] = NLA_POLICY_MIN(NLA_U32, 1),
+};
+
+static void xfrmi_destroy_state(struct lwtunnel_state *lwt)
+{
+}
+
+static int xfrmi_build_state(struct net *net, struct nlattr *nla,
+ unsigned int family, const void *cfg,
+ struct lwtunnel_state **ts,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[LWT_XFRM_MAX + 1];
+ struct lwtunnel_state *new_state;
+ struct xfrm_md_info *info;
+ int ret;
+
+ ret = nla_parse_nested(tb, LWT_XFRM_MAX, nla, xfrm_lwt_policy, extack);
+ if (ret < 0)
+ return ret;
+
+ if (!tb[LWT_XFRM_IF_ID]) {
+ NL_SET_ERR_MSG(extack, "if_id must be set");
+ return -EINVAL;
+ }
+
+ new_state = lwtunnel_state_alloc(sizeof(*info));
+ if (!new_state) {
+ NL_SET_ERR_MSG(extack, "failed to create encap info");
+ return -ENOMEM;
+ }
+
+ new_state->type = LWTUNNEL_ENCAP_XFRM;
+
+ info = lwt_xfrm_info(new_state);
+
+ info->if_id = nla_get_u32(tb[LWT_XFRM_IF_ID]);
+
+ if (tb[LWT_XFRM_LINK])
+ info->link = nla_get_u32(tb[LWT_XFRM_LINK]);
+
+ *ts = new_state;
+ return 0;
+}
+
+static int xfrmi_fill_encap_info(struct sk_buff *skb,
+ struct lwtunnel_state *lwt)
+{
+ struct xfrm_md_info *info = lwt_xfrm_info(lwt);
+
+ if (nla_put_u32(skb, LWT_XFRM_IF_ID, info->if_id) ||
+ (info->link && nla_put_u32(skb, LWT_XFRM_LINK, info->link)))
+ return -EMSGSIZE;
+
+ return 0;
+}
+
+static int xfrmi_encap_nlsize(struct lwtunnel_state *lwtstate)
+{
+ return nla_total_size(sizeof(u32)) + /* LWT_XFRM_IF_ID */
+ nla_total_size(sizeof(u32)); /* LWT_XFRM_LINK */
+}
+
+static int xfrmi_encap_cmp(struct lwtunnel_state *a, struct lwtunnel_state *b)
+{
+ struct xfrm_md_info *a_info = lwt_xfrm_info(a);
+ struct xfrm_md_info *b_info = lwt_xfrm_info(b);
+
+ return memcmp(a_info, b_info, sizeof(*a_info));
+}
+
+static const struct lwtunnel_encap_ops xfrmi_encap_ops = {
+ .build_state = xfrmi_build_state,
+ .destroy_state = xfrmi_destroy_state,
+ .fill_encap = xfrmi_fill_encap_info,
+ .get_encap_size = xfrmi_encap_nlsize,
+ .cmp_encap = xfrmi_encap_cmp,
+ .owner = THIS_MODULE,
};
#define for_each_xfrmi_rcu(start, xi) \
@@ -77,17 +161,23 @@ static struct xfrm_if *xfrmi_lookup(struct net *net, struct xfrm_state *x)
return xi;
}
+ xi = rcu_dereference(xfrmn->collect_md_xfrmi);
+ if (xi && (xi->dev->flags & IFF_UP))
+ return xi;
+
return NULL;
}
-static struct xfrm_if *xfrmi_decode_session(struct sk_buff *skb,
- unsigned short family)
+static bool xfrmi_decode_session(struct sk_buff *skb,
+ unsigned short family,
+ struct xfrm_if_decode_session_result *res)
{
struct net_device *dev;
+ struct xfrm_if *xi;
int ifindex = 0;
if (!secpath_exists(skb) || !skb->dev)
- return NULL;
+ return false;
switch (family) {
case AF_INET6:
@@ -107,11 +197,18 @@ static struct xfrm_if *xfrmi_decode_session(struct sk_buff *skb,
}
if (!dev || !(dev->flags & IFF_UP))
- return NULL;
+ return false;
if (dev->netdev_ops != &xfrmi_netdev_ops)
- return NULL;
+ return false;
+
+ xi = netdev_priv(dev);
+ res->net = xi->net;
- return netdev_priv(dev);
+ if (xi->p.collect_md)
+ res->if_id = xfrm_input_state(skb)->if_id;
+ else
+ res->if_id = xi->p.if_id;
+ return true;
}
static void xfrmi_link(struct xfrmi_net *xfrmn, struct xfrm_if *xi)
@@ -157,7 +254,10 @@ static int xfrmi_create(struct net_device *dev)
if (err < 0)
goto out;
- xfrmi_link(xfrmn, xi);
+ if (xi->p.collect_md)
+ rcu_assign_pointer(xfrmn->collect_md_xfrmi, xi);
+ else
+ xfrmi_link(xfrmn, xi);
return 0;
@@ -185,12 +285,15 @@ static void xfrmi_dev_uninit(struct net_device *dev)
struct xfrm_if *xi = netdev_priv(dev);
struct xfrmi_net *xfrmn = net_generic(xi->net, xfrmi_net_id);
- xfrmi_unlink(xfrmn, xi);
+ if (xi->p.collect_md)
+ RCU_INIT_POINTER(xfrmn->collect_md_xfrmi, NULL);
+ else
+ xfrmi_unlink(xfrmn, xi);
}
static void xfrmi_scrub_packet(struct sk_buff *skb, bool xnet)
{
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
skb->pkt_type = PACKET_HOST;
skb->skb_iif = 0;
skb->ignore_df = 0;
@@ -214,6 +317,7 @@ static int xfrmi_rcv_cb(struct sk_buff *skb, int err)
struct xfrm_state *x;
struct xfrm_if *xi;
bool xnet;
+ int link;
if (err && !secpath_exists(skb))
return 0;
@@ -224,6 +328,7 @@ static int xfrmi_rcv_cb(struct sk_buff *skb, int err)
if (!xi)
return 1;
+ link = skb->dev->ifindex;
dev = xi->dev;
skb->dev = dev;
@@ -254,6 +359,17 @@ static int xfrmi_rcv_cb(struct sk_buff *skb, int err)
}
xfrmi_scrub_packet(skb, xnet);
+ if (xi->p.collect_md) {
+ struct metadata_dst *md_dst;
+
+ md_dst = metadata_dst_alloc(0, METADATA_XFRM, GFP_ATOMIC);
+ if (!md_dst)
+ return -ENOMEM;
+
+ md_dst->u.xfrm_info.if_id = x->if_id;
+ md_dst->u.xfrm_info.link = link;
+ skb_dst_set(skb, (struct dst_entry *)md_dst);
+ }
dev_sw_netstats_rx_add(dev, skb->len);
return 0;
@@ -269,10 +385,23 @@ xfrmi_xmit2(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
struct net_device *tdev;
struct xfrm_state *x;
int err = -1;
+ u32 if_id;
int mtu;
+ if (xi->p.collect_md) {
+ struct xfrm_md_info *md_info = skb_xfrm_md_info(skb);
+
+ if (unlikely(!md_info))
+ return -EINVAL;
+
+ if_id = md_info->if_id;
+ fl->flowi_oif = md_info->link;
+ } else {
+ if_id = xi->p.if_id;
+ }
+
dst_hold(dst);
- dst = xfrm_lookup_with_ifid(xi->net, dst, fl, NULL, 0, xi->p.if_id);
+ dst = xfrm_lookup_with_ifid(xi->net, dst, fl, NULL, 0, if_id);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
dst = NULL;
@@ -283,7 +412,7 @@ xfrmi_xmit2(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
if (!x)
goto tx_err_link_failure;
- if (x->if_id != xi->p.if_id)
+ if (x->if_id != if_id)
goto tx_err_link_failure;
tdev = dst->dev;
@@ -304,7 +433,10 @@ xfrmi_xmit2(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
if (mtu < IPV6_MIN_MTU)
mtu = IPV6_MIN_MTU;
- icmpv6_ndo_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
+ if (skb->len > 1280)
+ icmpv6_ndo_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
+ else
+ goto xmit;
} else {
if (!(ip_hdr(skb)->frag_off & htons(IP_DF)))
goto xmit;
@@ -630,6 +762,9 @@ static void xfrmi_netlink_parms(struct nlattr *data[],
if (data[IFLA_XFRM_IF_ID])
parms->if_id = nla_get_u32(data[IFLA_XFRM_IF_ID]);
+
+ if (data[IFLA_XFRM_COLLECT_METADATA])
+ parms->collect_md = true;
}
static int xfrmi_newlink(struct net *src_net, struct net_device *dev,
@@ -642,14 +777,27 @@ static int xfrmi_newlink(struct net *src_net, struct net_device *dev,
int err;
xfrmi_netlink_parms(data, &p);
- if (!p.if_id) {
- NL_SET_ERR_MSG(extack, "if_id must be non zero");
- return -EINVAL;
- }
+ if (p.collect_md) {
+ struct xfrmi_net *xfrmn = net_generic(net, xfrmi_net_id);
- xi = xfrmi_locate(net, &p);
- if (xi)
- return -EEXIST;
+ if (p.link || p.if_id) {
+ NL_SET_ERR_MSG(extack, "link and if_id must be zero");
+ return -EINVAL;
+ }
+
+ if (rtnl_dereference(xfrmn->collect_md_xfrmi))
+ return -EEXIST;
+
+ } else {
+ if (!p.if_id) {
+ NL_SET_ERR_MSG(extack, "if_id must be non zero");
+ return -EINVAL;
+ }
+
+ xi = xfrmi_locate(net, &p);
+ if (xi)
+ return -EEXIST;
+ }
xi = netdev_priv(dev);
xi->p = p;
@@ -673,18 +821,28 @@ static int xfrmi_changelink(struct net_device *dev, struct nlattr *tb[],
struct net *net = xi->net;
struct xfrm_if_parms p = {};
+ xfrmi_netlink_parms(data, &p);
if (!p.if_id) {
NL_SET_ERR_MSG(extack, "if_id must be non zero");
return -EINVAL;
}
- xfrmi_netlink_parms(data, &p);
+ if (p.collect_md) {
+ NL_SET_ERR_MSG(extack, "collect_md can't be changed");
+ return -EINVAL;
+ }
+
xi = xfrmi_locate(net, &p);
if (!xi) {
xi = netdev_priv(dev);
} else {
if (xi->dev != dev)
return -EEXIST;
+ if (xi->p.collect_md) {
+ NL_SET_ERR_MSG(extack,
+ "device can't be changed to collect_md");
+ return -EINVAL;
+ }
}
return xfrmi_update(xi, &p);
@@ -697,6 +855,8 @@ static size_t xfrmi_get_size(const struct net_device *dev)
nla_total_size(4) +
/* IFLA_XFRM_IF_ID */
nla_total_size(4) +
+ /* IFLA_XFRM_COLLECT_METADATA */
+ nla_total_size(0) +
0;
}
@@ -706,7 +866,8 @@ static int xfrmi_fill_info(struct sk_buff *skb, const struct net_device *dev)
struct xfrm_if_parms *parm = &xi->p;
if (nla_put_u32(skb, IFLA_XFRM_LINK, parm->link) ||
- nla_put_u32(skb, IFLA_XFRM_IF_ID, parm->if_id))
+ nla_put_u32(skb, IFLA_XFRM_IF_ID, parm->if_id) ||
+ (xi->p.collect_md && nla_put_flag(skb, IFLA_XFRM_COLLECT_METADATA)))
goto nla_put_failure;
return 0;
@@ -722,8 +883,10 @@ static struct net *xfrmi_get_link_net(const struct net_device *dev)
}
static const struct nla_policy xfrmi_policy[IFLA_XFRM_MAX + 1] = {
- [IFLA_XFRM_LINK] = { .type = NLA_U32 },
- [IFLA_XFRM_IF_ID] = { .type = NLA_U32 },
+ [IFLA_XFRM_UNSPEC] = { .strict_start_type = IFLA_XFRM_COLLECT_METADATA },
+ [IFLA_XFRM_LINK] = { .type = NLA_U32 },
+ [IFLA_XFRM_IF_ID] = { .type = NLA_U32 },
+ [IFLA_XFRM_COLLECT_METADATA] = { .type = NLA_FLAG },
};
static struct rtnl_link_ops xfrmi_link_ops __read_mostly = {
@@ -759,6 +922,9 @@ static void __net_exit xfrmi_exit_batch_net(struct list_head *net_exit_list)
xip = &xi->next)
unregister_netdevice_queue(xi->dev, &list);
}
+ xi = rtnl_dereference(xfrmn->collect_md_xfrmi);
+ if (xi)
+ unregister_netdevice_queue(xi->dev, &list);
}
unregister_netdevice_many(&list);
rtnl_unlock();
@@ -996,6 +1162,8 @@ static int __init xfrmi_init(void)
if (err < 0)
goto rtnl_link_failed;
+ lwtunnel_encap_add_ops(&xfrmi_encap_ops, LWTUNNEL_ENCAP_XFRM);
+
xfrm_if_register_cb(&xfrm_if_cb);
return err;
@@ -1014,6 +1182,7 @@ pernet_dev_failed:
static void __exit xfrmi_fini(void)
{
xfrm_if_unregister_cb();
+ lwtunnel_encap_del_ops(&xfrmi_encap_ops, LWTUNNEL_ENCAP_XFRM);
rtnl_link_unregister(&xfrmi_link_ops);
xfrmi4_fini();
xfrmi6_fini();
diff --git a/net/xfrm/xfrm_ipcomp.c b/net/xfrm/xfrm_ipcomp.c
index cb40ff0ff28d..80143360bf09 100644
--- a/net/xfrm/xfrm_ipcomp.c
+++ b/net/xfrm/xfrm_ipcomp.c
@@ -203,6 +203,7 @@ static void ipcomp_free_scratches(void)
vfree(*per_cpu_ptr(scratches, i));
free_percpu(scratches);
+ ipcomp_scratches = NULL;
}
static void * __percpu *ipcomp_alloc_scratches(void)
@@ -325,18 +326,22 @@ void ipcomp_destroy(struct xfrm_state *x)
}
EXPORT_SYMBOL_GPL(ipcomp_destroy);
-int ipcomp_init_state(struct xfrm_state *x)
+int ipcomp_init_state(struct xfrm_state *x, struct netlink_ext_ack *extack)
{
int err;
struct ipcomp_data *ipcd;
struct xfrm_algo_desc *calg_desc;
err = -EINVAL;
- if (!x->calg)
+ if (!x->calg) {
+ NL_SET_ERR_MSG(extack, "Missing required compression algorithm");
goto out;
+ }
- if (x->encap)
+ if (x->encap) {
+ NL_SET_ERR_MSG(extack, "IPComp is not compatible with encapsulation");
goto out;
+ }
err = -ENOMEM;
ipcd = kzalloc(sizeof(*ipcd), GFP_KERNEL);
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index d4935b3b9983..9a5e79a38c67 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -273,6 +273,7 @@ static int xfrm4_beet_encap_add(struct xfrm_state *x, struct sk_buff *skb)
*/
static int xfrm4_tunnel_encap_add(struct xfrm_state *x, struct sk_buff *skb)
{
+ bool small_ipv6 = (skb->protocol == htons(ETH_P_IPV6)) && (skb->len <= IPV6_MIN_MTU);
struct dst_entry *dst = skb_dst(skb);
struct iphdr *top_iph;
int flags;
@@ -303,7 +304,7 @@ static int xfrm4_tunnel_encap_add(struct xfrm_state *x, struct sk_buff *skb)
if (flags & XFRM_STATE_NOECN)
IP_ECN_clear(top_iph);
- top_iph->frag_off = (flags & XFRM_STATE_NOPMTUDISC) ?
+ top_iph->frag_off = (flags & XFRM_STATE_NOPMTUDISC) || small_ipv6 ?
0 : (XFRM_MODE_SKB_CB(skb)->frag_off & htons(IP_DF));
top_iph->ttl = ip4_dst_hoplimit(xfrm_dst_child(dst));
@@ -533,7 +534,6 @@ static int xfrm_output_one(struct sk_buff *skb, int err)
x->curlft.bytes += skb->len;
x->curlft.packets++;
- x->curlft.use_time = ktime_get_real_seconds();
spin_unlock_bh(&x->lock);
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index dccb8f3318ef..e392d8d05e0c 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -31,6 +31,7 @@
#include <linux/if_tunnel.h>
#include <net/dst.h>
#include <net/flow.h>
+#include <net/inet_ecn.h>
#include <net/xfrm.h>
#include <net/ip.h>
#include <net/gre.h>
@@ -1888,7 +1889,7 @@ EXPORT_SYMBOL(xfrm_policy_walk_done);
*/
static int xfrm_policy_match(const struct xfrm_policy *pol,
const struct flowi *fl,
- u8 type, u16 family, int dir, u32 if_id)
+ u8 type, u16 family, u32 if_id)
{
const struct xfrm_selector *sel = &pol->selector;
int ret = -ESRCH;
@@ -2013,7 +2014,7 @@ static struct xfrm_policy *
__xfrm_policy_eval_candidates(struct hlist_head *chain,
struct xfrm_policy *prefer,
const struct flowi *fl,
- u8 type, u16 family, int dir, u32 if_id)
+ u8 type, u16 family, u32 if_id)
{
u32 priority = prefer ? prefer->priority : ~0u;
struct xfrm_policy *pol;
@@ -2027,7 +2028,7 @@ __xfrm_policy_eval_candidates(struct hlist_head *chain,
if (pol->priority > priority)
break;
- err = xfrm_policy_match(pol, fl, type, family, dir, if_id);
+ err = xfrm_policy_match(pol, fl, type, family, if_id);
if (err) {
if (err != -ESRCH)
return ERR_PTR(err);
@@ -2052,7 +2053,7 @@ static struct xfrm_policy *
xfrm_policy_eval_candidates(struct xfrm_pol_inexact_candidates *cand,
struct xfrm_policy *prefer,
const struct flowi *fl,
- u8 type, u16 family, int dir, u32 if_id)
+ u8 type, u16 family, u32 if_id)
{
struct xfrm_policy *tmp;
int i;
@@ -2060,8 +2061,7 @@ xfrm_policy_eval_candidates(struct xfrm_pol_inexact_candidates *cand,
for (i = 0; i < ARRAY_SIZE(cand->res); i++) {
tmp = __xfrm_policy_eval_candidates(cand->res[i],
prefer,
- fl, type, family, dir,
- if_id);
+ fl, type, family, if_id);
if (!tmp)
continue;
@@ -2100,7 +2100,7 @@ static struct xfrm_policy *xfrm_policy_lookup_bytype(struct net *net, u8 type,
ret = NULL;
hlist_for_each_entry_rcu(pol, chain, bydst) {
- err = xfrm_policy_match(pol, fl, type, family, dir, if_id);
+ err = xfrm_policy_match(pol, fl, type, family, if_id);
if (err) {
if (err == -ESRCH)
continue;
@@ -2119,7 +2119,7 @@ static struct xfrm_policy *xfrm_policy_lookup_bytype(struct net *net, u8 type,
goto skip_inexact;
pol = xfrm_policy_eval_candidates(&cand, ret, fl, type,
- family, dir, if_id);
+ family, if_id);
if (pol) {
ret = pol;
if (IS_ERR(pol))
@@ -2592,12 +2592,14 @@ static struct dst_entry *xfrm_bundle_create(struct xfrm_policy *policy,
if (xfrm[i]->props.mode != XFRM_MODE_TRANSPORT) {
__u32 mark = 0;
+ int oif;
if (xfrm[i]->props.smark.v || xfrm[i]->props.smark.m)
mark = xfrm_smark_get(fl->flowi_mark, xfrm[i]);
family = xfrm[i]->props.family;
- dst = xfrm_dst_lookup(xfrm[i], tos, fl->flowi_oif,
+ oif = fl->flowi_oif ? : fl->flowi_l3mdev;
+ dst = xfrm_dst_lookup(xfrm[i], tos, oif,
&saddr, &daddr, family, mark);
err = PTR_ERR(dst);
if (IS_ERR(dst))
@@ -2675,8 +2677,10 @@ static int xfrm_expand_policies(const struct flowi *fl, u16 family,
*num_xfrms = 0;
return 0;
}
- if (IS_ERR(pols[0]))
+ if (IS_ERR(pols[0])) {
+ *num_pols = 0;
return PTR_ERR(pols[0]);
+ }
*num_xfrms = pols[0]->xfrm_nr;
@@ -2691,6 +2695,7 @@ static int xfrm_expand_policies(const struct flowi *fl, u16 family,
if (pols[1]) {
if (IS_ERR(pols[1])) {
xfrm_pols_put(pols, *num_pols);
+ *num_pols = 0;
return PTR_ERR(pols[1]);
}
(*num_pols)++;
@@ -3156,8 +3161,8 @@ ok:
return dst;
nopol:
- if (!(dst_orig->dev->flags & IFF_LOOPBACK) &&
- !xfrm_default_allow(net, dir)) {
+ if ((!dst_orig->dev || !(dst_orig->dev->flags & IFF_LOOPBACK)) &&
+ net->xfrm.policy_default[dir] == XFRM_USERPOLICY_BLOCK) {
err = -EPERM;
goto error;
}
@@ -3295,7 +3300,7 @@ decode_session4(struct sk_buff *skb, struct flowi *fl, bool reverse)
fl4->flowi4_proto = iph->protocol;
fl4->daddr = reverse ? iph->saddr : iph->daddr;
fl4->saddr = reverse ? iph->daddr : iph->saddr;
- fl4->flowi4_tos = iph->tos;
+ fl4->flowi4_tos = iph->tos & ~INET_ECN_MASK;
if (!ip_is_fragment(iph)) {
switch (iph->protocol) {
@@ -3510,17 +3515,17 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
int xerr_idx = -1;
const struct xfrm_if_cb *ifcb;
struct sec_path *sp;
- struct xfrm_if *xi;
u32 if_id = 0;
rcu_read_lock();
ifcb = xfrm_if_get_cb();
if (ifcb) {
- xi = ifcb->decode_session(skb, family);
- if (xi) {
- if_id = xi->p.if_id;
- net = xi->net;
+ struct xfrm_if_decode_session_result r;
+
+ if (ifcb->decode_session(skb, family, &r)) {
+ if_id = r.if_id;
+ net = r.net;
}
}
rcu_read_unlock();
@@ -3568,7 +3573,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
}
if (!pol) {
- if (!xfrm_default_allow(net, dir)) {
+ if (net->xfrm.policy_default[dir] == XFRM_USERPOLICY_BLOCK) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMINNOPOLS);
return 0;
}
@@ -3593,6 +3598,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
if (pols[1]) {
if (IS_ERR(pols[1])) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMINPOLERROR);
+ xfrm_pol_put(pols[0]);
return 0;
}
pols[1]->curlft.use_time = ktime_get_real_seconds();
@@ -3628,7 +3634,8 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
}
xfrm_nr = ti;
- if (!xfrm_default_allow(net, dir) && !xfrm_nr) {
+ if (net->xfrm.policy_default[dir] == XFRM_USERPOLICY_BLOCK &&
+ !xfrm_nr) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMINNOSTATES);
goto reject;
}
@@ -3740,7 +3747,7 @@ static int stale_bundle(struct dst_entry *dst)
void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev)
{
while ((dst = xfrm_dst_child(dst)) && dst->xfrm && dst->dev == dev) {
- dst->dev = dev_net(dev)->loopback_dev;
+ dst->dev = blackhole_netdev;
dev_hold(dst->dev);
dev_put(dev);
}
@@ -4117,6 +4124,9 @@ static int __net_init xfrm_net_init(struct net *net)
spin_lock_init(&net->xfrm.xfrm_policy_lock);
seqcount_spinlock_init(&net->xfrm.xfrm_policy_hash_generation, &net->xfrm.xfrm_policy_lock);
mutex_init(&net->xfrm.xfrm_cfg_mutex);
+ net->xfrm.policy_default[XFRM_POLICY_IN] = XFRM_USERPOLICY_ACCEPT;
+ net->xfrm.policy_default[XFRM_POLICY_FWD] = XFRM_USERPOLICY_ACCEPT;
+ net->xfrm.policy_default[XFRM_POLICY_OUT] = XFRM_USERPOLICY_ACCEPT;
rv = xfrm_statistics_init(net);
if (rv < 0)
@@ -4255,7 +4265,7 @@ static bool xfrm_migrate_selector_match(const struct xfrm_selector *sel_cmp,
}
static struct xfrm_policy *xfrm_migrate_policy_find(const struct xfrm_selector *sel,
- u8 dir, u8 type, struct net *net)
+ u8 dir, u8 type, struct net *net, u32 if_id)
{
struct xfrm_policy *pol, *ret = NULL;
struct hlist_head *chain;
@@ -4264,7 +4274,8 @@ static struct xfrm_policy *xfrm_migrate_policy_find(const struct xfrm_selector *
spin_lock_bh(&net->xfrm.xfrm_policy_lock);
chain = policy_hash_direct(net, &sel->daddr, &sel->saddr, sel->family, dir);
hlist_for_each_entry(pol, chain, bydst) {
- if (xfrm_migrate_selector_match(sel, &pol->selector) &&
+ if ((if_id == 0 || pol->if_id == if_id) &&
+ xfrm_migrate_selector_match(sel, &pol->selector) &&
pol->type == type) {
ret = pol;
priority = ret->priority;
@@ -4276,7 +4287,8 @@ static struct xfrm_policy *xfrm_migrate_policy_find(const struct xfrm_selector *
if ((pol->priority >= priority) && ret)
break;
- if (xfrm_migrate_selector_match(sel, &pol->selector) &&
+ if ((if_id == 0 || pol->if_id == if_id) &&
+ xfrm_migrate_selector_match(sel, &pol->selector) &&
pol->type == type) {
ret = pol;
break;
@@ -4392,7 +4404,7 @@ static int xfrm_migrate_check(const struct xfrm_migrate *m, int num_migrate)
int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
struct xfrm_migrate *m, int num_migrate,
struct xfrm_kmaddress *k, struct net *net,
- struct xfrm_encap_tmpl *encap)
+ struct xfrm_encap_tmpl *encap, u32 if_id)
{
int i, err, nx_cur = 0, nx_new = 0;
struct xfrm_policy *pol = NULL;
@@ -4411,14 +4423,14 @@ int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
}
/* Stage 1 - find policy */
- if ((pol = xfrm_migrate_policy_find(sel, dir, type, net)) == NULL) {
+ if ((pol = xfrm_migrate_policy_find(sel, dir, type, net, if_id)) == NULL) {
err = -ENOENT;
goto out;
}
/* Stage 2 - find and update state(s) */
for (i = 0, mp = m; i < num_migrate; i++, mp++) {
- if ((x = xfrm_migrate_state_find(mp, net))) {
+ if ((x = xfrm_migrate_state_find(mp, net, if_id))) {
x_cur[nx_cur] = x;
nx_cur++;
xc = xfrm_state_migrate(x, mp, encap);
diff --git a/net/xfrm/xfrm_replay.c b/net/xfrm/xfrm_replay.c
index 9277d81b344c..9f4d42eb090f 100644
--- a/net/xfrm/xfrm_replay.c
+++ b/net/xfrm/xfrm_replay.c
@@ -766,18 +766,22 @@ int xfrm_replay_overflow(struct xfrm_state *x, struct sk_buff *skb)
}
#endif
-int xfrm_init_replay(struct xfrm_state *x)
+int xfrm_init_replay(struct xfrm_state *x, struct netlink_ext_ack *extack)
{
struct xfrm_replay_state_esn *replay_esn = x->replay_esn;
if (replay_esn) {
if (replay_esn->replay_window >
- replay_esn->bmp_len * sizeof(__u32) * 8)
+ replay_esn->bmp_len * sizeof(__u32) * 8) {
+ NL_SET_ERR_MSG(extack, "ESN replay window is too large for the chosen bitmap size");
return -EINVAL;
+ }
if (x->props.flags & XFRM_STATE_ESN) {
- if (replay_esn->replay_window == 0)
+ if (replay_esn->replay_window == 0) {
+ NL_SET_ERR_MSG(extack, "ESN replay window must be > 0");
return -EINVAL;
+ }
x->repl_mode = XFRM_REPLAY_MODE_ESN;
} else {
x->repl_mode = XFRM_REPLAY_MODE_BMP;
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index ca6bee18346d..3d2fe7712ac5 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -751,7 +751,7 @@ xfrm_dev_state_flush_secctx_check(struct net *net, struct net_device *dev, bool
for (i = 0; i <= net->xfrm.state_hmask; i++) {
struct xfrm_state *x;
- struct xfrm_state_offload *xso;
+ struct xfrm_dev_offload *xso;
hlist_for_each_entry(x, net->xfrm.state_bydst+i, bydst) {
xso = &x->xso;
@@ -835,7 +835,7 @@ int xfrm_dev_state_flush(struct net *net, struct net_device *dev, bool task_vali
err = -ESRCH;
for (i = 0; i <= net->xfrm.state_hmask; i++) {
struct xfrm_state *x;
- struct xfrm_state_offload *xso;
+ struct xfrm_dev_offload *xso;
restart:
hlist_for_each_entry(x, net->xfrm.state_bydst+i, bydst) {
xso = &x->xso;
@@ -1579,9 +1579,6 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig,
memcpy(&x->mark, &orig->mark, sizeof(x->mark));
memcpy(&x->props.smark, &orig->props.smark, sizeof(x->props.smark));
- if (xfrm_init_state(x) < 0)
- goto error;
-
x->props.flags = orig->props.flags;
x->props.extra_flags = orig->props.extra_flags;
@@ -1595,6 +1592,7 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig,
x->replay = orig->replay;
x->preplay = orig->preplay;
x->mapping_maxage = orig->mapping_maxage;
+ x->lastused = orig->lastused;
x->new_mapping = 0;
x->new_mapping_sport = 0;
@@ -1606,7 +1604,8 @@ out:
return NULL;
}
-struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net)
+struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net,
+ u32 if_id)
{
unsigned int h;
struct xfrm_state *x = NULL;
@@ -1622,6 +1621,8 @@ struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *n
continue;
if (m->reqid && x->props.reqid != m->reqid)
continue;
+ if (if_id != 0 && x->if_id != if_id)
+ continue;
if (!xfrm_addr_equal(&x->id.daddr, &m->old_daddr,
m->old_family) ||
!xfrm_addr_equal(&x->props.saddr, &m->old_saddr,
@@ -1637,6 +1638,8 @@ struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *n
if (x->props.mode != m->mode ||
x->id.proto != m->proto)
continue;
+ if (if_id != 0 && x->if_id != if_id)
+ continue;
if (!xfrm_addr_equal(&x->id.daddr, &m->old_daddr,
m->old_family) ||
!xfrm_addr_equal(&x->props.saddr, &m->old_saddr,
@@ -1663,6 +1666,11 @@ struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x,
if (!xc)
return NULL;
+ xc->props.family = m->new_family;
+
+ if (xfrm_init_state(xc) < 0)
+ goto error;
+
memcpy(&xc->id.daddr, &m->new_daddr, sizeof(xc->id.daddr));
memcpy(&xc->props.saddr, &m->new_saddr, sizeof(xc->props.saddr));
@@ -2064,7 +2072,7 @@ int xfrm_alloc_spi(struct xfrm_state *x, u32 low, u32 high)
} else {
u32 spi = 0;
for (h = 0; h < high-low+1; h++) {
- spi = low + prandom_u32()%(high-low+1);
+ spi = low + prandom_u32_max(high - low + 1);
x0 = xfrm_state_lookup(net, mark, &x->id.daddr, htonl(spi), x->id.proto, x->props.family);
if (x0 == NULL) {
newspi = htonl(spi);
@@ -2474,22 +2482,20 @@ EXPORT_SYMBOL(xfrm_user_policy);
static DEFINE_SPINLOCK(xfrm_km_lock);
-int xfrm_register_km(struct xfrm_mgr *km)
+void xfrm_register_km(struct xfrm_mgr *km)
{
spin_lock_bh(&xfrm_km_lock);
list_add_tail_rcu(&km->list, &xfrm_km_list);
spin_unlock_bh(&xfrm_km_lock);
- return 0;
}
EXPORT_SYMBOL(xfrm_register_km);
-int xfrm_unregister_km(struct xfrm_mgr *km)
+void xfrm_unregister_km(struct xfrm_mgr *km)
{
spin_lock_bh(&xfrm_km_lock);
list_del_rcu(&km->list);
spin_unlock_bh(&xfrm_km_lock);
synchronize_rcu();
- return 0;
}
EXPORT_SYMBOL(xfrm_unregister_km);
@@ -2572,7 +2578,7 @@ void xfrm_state_delete_tunnel(struct xfrm_state *x)
}
EXPORT_SYMBOL(xfrm_state_delete_tunnel);
-u32 __xfrm_state_mtu(struct xfrm_state *x, int mtu)
+u32 xfrm_state_mtu(struct xfrm_state *x, int mtu)
{
const struct xfrm_type *type = READ_ONCE(x->type);
struct crypto_aead *aead;
@@ -2603,19 +2609,10 @@ u32 __xfrm_state_mtu(struct xfrm_state *x, int mtu)
return ((mtu - x->props.header_len - crypto_aead_authsize(aead) -
net_adj) & ~(blksize - 1)) + net_adj - 2;
}
-EXPORT_SYMBOL_GPL(__xfrm_state_mtu);
+EXPORT_SYMBOL_GPL(xfrm_state_mtu);
-u32 xfrm_state_mtu(struct xfrm_state *x, int mtu)
-{
- mtu = __xfrm_state_mtu(x, mtu);
-
- if (x->props.family == AF_INET6 && mtu < IPV6_MIN_MTU)
- return IPV6_MIN_MTU;
-
- return mtu;
-}
-
-int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload)
+int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload,
+ struct netlink_ext_ack *extack)
{
const struct xfrm_mode *inner_mode;
const struct xfrm_mode *outer_mode;
@@ -2623,19 +2620,23 @@ int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload)
int err;
if (family == AF_INET &&
- xs_net(x)->ipv4.sysctl_ip_no_pmtu_disc)
+ READ_ONCE(xs_net(x)->ipv4.sysctl_ip_no_pmtu_disc))
x->props.flags |= XFRM_STATE_NOPMTUDISC;
err = -EPROTONOSUPPORT;
if (x->sel.family != AF_UNSPEC) {
inner_mode = xfrm_get_mode(x->props.mode, x->sel.family);
- if (inner_mode == NULL)
+ if (inner_mode == NULL) {
+ NL_SET_ERR_MSG(extack, "Requested mode not found");
goto error;
+ }
if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL) &&
- family != x->sel.family)
+ family != x->sel.family) {
+ NL_SET_ERR_MSG(extack, "Only tunnel modes can accommodate a change of family");
goto error;
+ }
x->inner_mode = *inner_mode;
} else {
@@ -2643,11 +2644,15 @@ int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload)
int iafamily = AF_INET;
inner_mode = xfrm_get_mode(x->props.mode, x->props.family);
- if (inner_mode == NULL)
+ if (inner_mode == NULL) {
+ NL_SET_ERR_MSG(extack, "Requested mode not found");
goto error;
+ }
- if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL))
+ if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL)) {
+ NL_SET_ERR_MSG(extack, "Only tunnel modes can accommodate an AF_UNSPEC selector");
goto error;
+ }
x->inner_mode = *inner_mode;
@@ -2662,24 +2667,27 @@ int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload)
}
x->type = xfrm_get_type(x->id.proto, family);
- if (x->type == NULL)
+ if (x->type == NULL) {
+ NL_SET_ERR_MSG(extack, "Requested type not found");
goto error;
+ }
x->type_offload = xfrm_get_type_offload(x->id.proto, family, offload);
- err = x->type->init_state(x);
+ err = x->type->init_state(x, extack);
if (err)
goto error;
outer_mode = xfrm_get_mode(x->props.mode, family);
if (!outer_mode) {
+ NL_SET_ERR_MSG(extack, "Requested mode not found");
err = -EPROTONOSUPPORT;
goto error;
}
x->outer_mode = *outer_mode;
if (init_replay) {
- err = xfrm_init_replay(x);
+ err = xfrm_init_replay(x, extack);
if (err)
goto error;
}
@@ -2694,7 +2702,7 @@ int xfrm_init_state(struct xfrm_state *x)
{
int err;
- err = __xfrm_init_state(x, true, false);
+ err = __xfrm_init_state(x, true, false, NULL);
if (!err)
x->km.state = XFRM_STATE_VALID;
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 8cd6c8129004..e73f9efc54c1 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -35,7 +35,8 @@
#endif
#include <asm/unaligned.h>
-static int verify_one_alg(struct nlattr **attrs, enum xfrm_attr_type_t type)
+static int verify_one_alg(struct nlattr **attrs, enum xfrm_attr_type_t type,
+ struct netlink_ext_ack *extack)
{
struct nlattr *rt = attrs[type];
struct xfrm_algo *algp;
@@ -44,8 +45,10 @@ static int verify_one_alg(struct nlattr **attrs, enum xfrm_attr_type_t type)
return 0;
algp = nla_data(rt);
- if (nla_len(rt) < (int)xfrm_alg_len(algp))
+ if (nla_len(rt) < (int)xfrm_alg_len(algp)) {
+ NL_SET_ERR_MSG(extack, "Invalid AUTH/CRYPT/COMP attribute length");
return -EINVAL;
+ }
switch (type) {
case XFRMA_ALG_AUTH:
@@ -54,6 +57,7 @@ static int verify_one_alg(struct nlattr **attrs, enum xfrm_attr_type_t type)
break;
default:
+ NL_SET_ERR_MSG(extack, "Invalid algorithm attribute type");
return -EINVAL;
}
@@ -61,7 +65,8 @@ static int verify_one_alg(struct nlattr **attrs, enum xfrm_attr_type_t type)
return 0;
}
-static int verify_auth_trunc(struct nlattr **attrs)
+static int verify_auth_trunc(struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct nlattr *rt = attrs[XFRMA_ALG_AUTH_TRUNC];
struct xfrm_algo_auth *algp;
@@ -70,14 +75,16 @@ static int verify_auth_trunc(struct nlattr **attrs)
return 0;
algp = nla_data(rt);
- if (nla_len(rt) < (int)xfrm_alg_auth_len(algp))
+ if (nla_len(rt) < (int)xfrm_alg_auth_len(algp)) {
+ NL_SET_ERR_MSG(extack, "Invalid AUTH_TRUNC attribute length");
return -EINVAL;
+ }
algp->alg_name[sizeof(algp->alg_name) - 1] = '\0';
return 0;
}
-static int verify_aead(struct nlattr **attrs)
+static int verify_aead(struct nlattr **attrs, struct netlink_ext_ack *extack)
{
struct nlattr *rt = attrs[XFRMA_ALG_AEAD];
struct xfrm_algo_aead *algp;
@@ -86,8 +93,10 @@ static int verify_aead(struct nlattr **attrs)
return 0;
algp = nla_data(rt);
- if (nla_len(rt) < (int)aead_len(algp))
+ if (nla_len(rt) < (int)aead_len(algp)) {
+ NL_SET_ERR_MSG(extack, "Invalid AEAD attribute length");
return -EINVAL;
+ }
algp->alg_name[sizeof(algp->alg_name) - 1] = '\0';
return 0;
@@ -102,7 +111,7 @@ static void verify_one_addr(struct nlattr **attrs, enum xfrm_attr_type_t type,
*addrp = nla_data(rt);
}
-static inline int verify_sec_ctx_len(struct nlattr **attrs)
+static inline int verify_sec_ctx_len(struct nlattr **attrs, struct netlink_ext_ack *extack)
{
struct nlattr *rt = attrs[XFRMA_SEC_CTX];
struct xfrm_user_sec_ctx *uctx;
@@ -112,42 +121,59 @@ static inline int verify_sec_ctx_len(struct nlattr **attrs)
uctx = nla_data(rt);
if (uctx->len > nla_len(rt) ||
- uctx->len != (sizeof(struct xfrm_user_sec_ctx) + uctx->ctx_len))
+ uctx->len != (sizeof(struct xfrm_user_sec_ctx) + uctx->ctx_len)) {
+ NL_SET_ERR_MSG(extack, "Invalid security context length");
return -EINVAL;
+ }
return 0;
}
static inline int verify_replay(struct xfrm_usersa_info *p,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct nlattr *rt = attrs[XFRMA_REPLAY_ESN_VAL];
struct xfrm_replay_state_esn *rs;
- if (!rt)
- return (p->flags & XFRM_STATE_ESN) ? -EINVAL : 0;
+ if (!rt) {
+ if (p->flags & XFRM_STATE_ESN) {
+ NL_SET_ERR_MSG(extack, "Missing required attribute for ESN");
+ return -EINVAL;
+ }
+ return 0;
+ }
rs = nla_data(rt);
- if (rs->bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof(rs->bmp[0]) / 8)
+ if (rs->bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof(rs->bmp[0]) / 8) {
+ NL_SET_ERR_MSG(extack, "ESN bitmap length must be <= 128");
return -EINVAL;
+ }
if (nla_len(rt) < (int)xfrm_replay_state_esn_len(rs) &&
- nla_len(rt) != sizeof(*rs))
+ nla_len(rt) != sizeof(*rs)) {
+ NL_SET_ERR_MSG(extack, "ESN attribute is too short to fit the full bitmap length");
return -EINVAL;
+ }
/* As only ESP and AH support ESN feature. */
- if ((p->id.proto != IPPROTO_ESP) && (p->id.proto != IPPROTO_AH))
+ if ((p->id.proto != IPPROTO_ESP) && (p->id.proto != IPPROTO_AH)) {
+ NL_SET_ERR_MSG(extack, "ESN only supported for ESP and AH");
return -EINVAL;
+ }
- if (p->replay_window != 0)
+ if (p->replay_window != 0) {
+ NL_SET_ERR_MSG(extack, "ESN not compatible with legacy replay_window");
return -EINVAL;
+ }
return 0;
}
static int verify_newsa_info(struct xfrm_usersa_info *p,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
int err;
@@ -161,10 +187,12 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
break;
#else
err = -EAFNOSUPPORT;
+ NL_SET_ERR_MSG(extack, "IPv6 support disabled");
goto out;
#endif
default:
+ NL_SET_ERR_MSG(extack, "Invalid address family");
goto out;
}
@@ -173,65 +201,98 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
break;
case AF_INET:
- if (p->sel.prefixlen_d > 32 || p->sel.prefixlen_s > 32)
+ if (p->sel.prefixlen_d > 32 || p->sel.prefixlen_s > 32) {
+ NL_SET_ERR_MSG(extack, "Invalid prefix length in selector (must be <= 32 for IPv4)");
goto out;
+ }
break;
case AF_INET6:
#if IS_ENABLED(CONFIG_IPV6)
- if (p->sel.prefixlen_d > 128 || p->sel.prefixlen_s > 128)
+ if (p->sel.prefixlen_d > 128 || p->sel.prefixlen_s > 128) {
+ NL_SET_ERR_MSG(extack, "Invalid prefix length in selector (must be <= 128 for IPv6)");
goto out;
+ }
break;
#else
+ NL_SET_ERR_MSG(extack, "IPv6 support disabled");
err = -EAFNOSUPPORT;
goto out;
#endif
default:
+ NL_SET_ERR_MSG(extack, "Invalid address family in selector");
goto out;
}
err = -EINVAL;
switch (p->id.proto) {
case IPPROTO_AH:
- if ((!attrs[XFRMA_ALG_AUTH] &&
- !attrs[XFRMA_ALG_AUTH_TRUNC]) ||
- attrs[XFRMA_ALG_AEAD] ||
+ if (!attrs[XFRMA_ALG_AUTH] &&
+ !attrs[XFRMA_ALG_AUTH_TRUNC]) {
+ NL_SET_ERR_MSG(extack, "Missing required attribute for AH: AUTH_TRUNC or AUTH");
+ goto out;
+ }
+
+ if (attrs[XFRMA_ALG_AEAD] ||
attrs[XFRMA_ALG_CRYPT] ||
attrs[XFRMA_ALG_COMP] ||
- attrs[XFRMA_TFCPAD])
+ attrs[XFRMA_TFCPAD]) {
+ NL_SET_ERR_MSG(extack, "Invalid attributes for AH: AEAD, CRYPT, COMP, TFCPAD");
goto out;
+ }
break;
case IPPROTO_ESP:
- if (attrs[XFRMA_ALG_COMP])
+ if (attrs[XFRMA_ALG_COMP]) {
+ NL_SET_ERR_MSG(extack, "Invalid attribute for ESP: COMP");
goto out;
+ }
+
if (!attrs[XFRMA_ALG_AUTH] &&
!attrs[XFRMA_ALG_AUTH_TRUNC] &&
!attrs[XFRMA_ALG_CRYPT] &&
- !attrs[XFRMA_ALG_AEAD])
+ !attrs[XFRMA_ALG_AEAD]) {
+ NL_SET_ERR_MSG(extack, "Missing required attribute for ESP: at least one of AUTH, AUTH_TRUNC, CRYPT, AEAD");
goto out;
+ }
+
if ((attrs[XFRMA_ALG_AUTH] ||
attrs[XFRMA_ALG_AUTH_TRUNC] ||
attrs[XFRMA_ALG_CRYPT]) &&
- attrs[XFRMA_ALG_AEAD])
+ attrs[XFRMA_ALG_AEAD]) {
+ NL_SET_ERR_MSG(extack, "Invalid attribute combination for ESP: AEAD can't be used with AUTH, AUTH_TRUNC, CRYPT");
goto out;
+ }
+
if (attrs[XFRMA_TFCPAD] &&
- p->mode != XFRM_MODE_TUNNEL)
+ p->mode != XFRM_MODE_TUNNEL) {
+ NL_SET_ERR_MSG(extack, "TFC padding can only be used in tunnel mode");
goto out;
+ }
break;
case IPPROTO_COMP:
- if (!attrs[XFRMA_ALG_COMP] ||
- attrs[XFRMA_ALG_AEAD] ||
+ if (!attrs[XFRMA_ALG_COMP]) {
+ NL_SET_ERR_MSG(extack, "Missing required attribute for COMP: COMP");
+ goto out;
+ }
+
+ if (attrs[XFRMA_ALG_AEAD] ||
attrs[XFRMA_ALG_AUTH] ||
attrs[XFRMA_ALG_AUTH_TRUNC] ||
attrs[XFRMA_ALG_CRYPT] ||
- attrs[XFRMA_TFCPAD] ||
- (ntohl(p->id.spi) >= 0x10000))
+ attrs[XFRMA_TFCPAD]) {
+ NL_SET_ERR_MSG(extack, "Invalid attributes for COMP: AEAD, AUTH, AUTH_TRUNC, CRYPT, TFCPAD");
+ goto out;
+ }
+
+ if (ntohl(p->id.spi) >= 0x10000) {
+ NL_SET_ERR_MSG(extack, "SPI is too large for COMP (must be < 0x10000)");
goto out;
+ }
break;
#if IS_ENABLED(CONFIG_IPV6)
@@ -244,29 +305,36 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
attrs[XFRMA_ALG_CRYPT] ||
attrs[XFRMA_ENCAP] ||
attrs[XFRMA_SEC_CTX] ||
- attrs[XFRMA_TFCPAD] ||
- !attrs[XFRMA_COADDR])
+ attrs[XFRMA_TFCPAD]) {
+ NL_SET_ERR_MSG(extack, "Invalid attributes for DSTOPTS/ROUTING");
goto out;
+ }
+
+ if (!attrs[XFRMA_COADDR]) {
+ NL_SET_ERR_MSG(extack, "Missing required COADDR attribute for DSTOPTS/ROUTING");
+ goto out;
+ }
break;
#endif
default:
+ NL_SET_ERR_MSG(extack, "Unsupported protocol");
goto out;
}
- if ((err = verify_aead(attrs)))
+ if ((err = verify_aead(attrs, extack)))
goto out;
- if ((err = verify_auth_trunc(attrs)))
+ if ((err = verify_auth_trunc(attrs, extack)))
goto out;
- if ((err = verify_one_alg(attrs, XFRMA_ALG_AUTH)))
+ if ((err = verify_one_alg(attrs, XFRMA_ALG_AUTH, extack)))
goto out;
- if ((err = verify_one_alg(attrs, XFRMA_ALG_CRYPT)))
+ if ((err = verify_one_alg(attrs, XFRMA_ALG_CRYPT, extack)))
goto out;
- if ((err = verify_one_alg(attrs, XFRMA_ALG_COMP)))
+ if ((err = verify_one_alg(attrs, XFRMA_ALG_COMP, extack)))
goto out;
- if ((err = verify_sec_ctx_len(attrs)))
+ if ((err = verify_sec_ctx_len(attrs, extack)))
goto out;
- if ((err = verify_replay(p, attrs)))
+ if ((err = verify_replay(p, attrs, extack)))
goto out;
err = -EINVAL;
@@ -278,14 +346,19 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
break;
default:
+ NL_SET_ERR_MSG(extack, "Unsupported mode");
goto out;
}
err = 0;
- if (attrs[XFRMA_MTIMER_THRESH])
- if (!attrs[XFRMA_ENCAP])
+ if (attrs[XFRMA_MTIMER_THRESH]) {
+ if (!attrs[XFRMA_ENCAP]) {
+ NL_SET_ERR_MSG(extack, "MTIMER_THRESH attribute can only be set on ENCAP states");
err = -EINVAL;
+ goto out;
+ }
+ }
out:
return err;
@@ -293,7 +366,7 @@ out:
static int attach_one_algo(struct xfrm_algo **algpp, u8 *props,
struct xfrm_algo_desc *(*get_byname)(const char *, int),
- struct nlattr *rta)
+ struct nlattr *rta, struct netlink_ext_ack *extack)
{
struct xfrm_algo *p, *ualg;
struct xfrm_algo_desc *algo;
@@ -304,8 +377,10 @@ static int attach_one_algo(struct xfrm_algo **algpp, u8 *props,
ualg = nla_data(rta);
algo = get_byname(ualg->alg_name, 1);
- if (!algo)
+ if (!algo) {
+ NL_SET_ERR_MSG(extack, "Requested COMP algorithm not found");
return -ENOSYS;
+ }
*props = algo->desc.sadb_alg_id;
p = kmemdup(ualg, xfrm_alg_len(ualg), GFP_KERNEL);
@@ -317,7 +392,8 @@ static int attach_one_algo(struct xfrm_algo **algpp, u8 *props,
return 0;
}
-static int attach_crypt(struct xfrm_state *x, struct nlattr *rta)
+static int attach_crypt(struct xfrm_state *x, struct nlattr *rta,
+ struct netlink_ext_ack *extack)
{
struct xfrm_algo *p, *ualg;
struct xfrm_algo_desc *algo;
@@ -328,8 +404,10 @@ static int attach_crypt(struct xfrm_state *x, struct nlattr *rta)
ualg = nla_data(rta);
algo = xfrm_ealg_get_byname(ualg->alg_name, 1);
- if (!algo)
+ if (!algo) {
+ NL_SET_ERR_MSG(extack, "Requested CRYPT algorithm not found");
return -ENOSYS;
+ }
x->props.ealgo = algo->desc.sadb_alg_id;
p = kmemdup(ualg, xfrm_alg_len(ualg), GFP_KERNEL);
@@ -343,7 +421,7 @@ static int attach_crypt(struct xfrm_state *x, struct nlattr *rta)
}
static int attach_auth(struct xfrm_algo_auth **algpp, u8 *props,
- struct nlattr *rta)
+ struct nlattr *rta, struct netlink_ext_ack *extack)
{
struct xfrm_algo *ualg;
struct xfrm_algo_auth *p;
@@ -355,8 +433,10 @@ static int attach_auth(struct xfrm_algo_auth **algpp, u8 *props,
ualg = nla_data(rta);
algo = xfrm_aalg_get_byname(ualg->alg_name, 1);
- if (!algo)
+ if (!algo) {
+ NL_SET_ERR_MSG(extack, "Requested AUTH algorithm not found");
return -ENOSYS;
+ }
*props = algo->desc.sadb_alg_id;
p = kmalloc(sizeof(*p) + (ualg->alg_key_len + 7) / 8, GFP_KERNEL);
@@ -373,7 +453,7 @@ static int attach_auth(struct xfrm_algo_auth **algpp, u8 *props,
}
static int attach_auth_trunc(struct xfrm_algo_auth **algpp, u8 *props,
- struct nlattr *rta)
+ struct nlattr *rta, struct netlink_ext_ack *extack)
{
struct xfrm_algo_auth *p, *ualg;
struct xfrm_algo_desc *algo;
@@ -384,10 +464,14 @@ static int attach_auth_trunc(struct xfrm_algo_auth **algpp, u8 *props,
ualg = nla_data(rta);
algo = xfrm_aalg_get_byname(ualg->alg_name, 1);
- if (!algo)
+ if (!algo) {
+ NL_SET_ERR_MSG(extack, "Requested AUTH_TRUNC algorithm not found");
return -ENOSYS;
- if (ualg->alg_trunc_len > algo->uinfo.auth.icv_fullbits)
+ }
+ if (ualg->alg_trunc_len > algo->uinfo.auth.icv_fullbits) {
+ NL_SET_ERR_MSG(extack, "Invalid length requested for truncated ICV");
return -EINVAL;
+ }
*props = algo->desc.sadb_alg_id;
p = kmemdup(ualg, xfrm_alg_auth_len(ualg), GFP_KERNEL);
@@ -402,7 +486,8 @@ static int attach_auth_trunc(struct xfrm_algo_auth **algpp, u8 *props,
return 0;
}
-static int attach_aead(struct xfrm_state *x, struct nlattr *rta)
+static int attach_aead(struct xfrm_state *x, struct nlattr *rta,
+ struct netlink_ext_ack *extack)
{
struct xfrm_algo_aead *p, *ualg;
struct xfrm_algo_desc *algo;
@@ -413,8 +498,10 @@ static int attach_aead(struct xfrm_state *x, struct nlattr *rta)
ualg = nla_data(rta);
algo = xfrm_aead_get_byname(ualg->alg_name, ualg->alg_icv_len, 1);
- if (!algo)
+ if (!algo) {
+ NL_SET_ERR_MSG(extack, "Requested AEAD algorithm not found");
return -ENOSYS;
+ }
x->props.ealgo = algo->desc.sadb_alg_id;
p = kmemdup(ualg, aead_len(ualg), GFP_KERNEL);
@@ -579,7 +666,8 @@ static void xfrm_smark_init(struct nlattr **attrs, struct xfrm_mark *m)
static struct xfrm_state *xfrm_state_construct(struct net *net,
struct xfrm_usersa_info *p,
struct nlattr **attrs,
- int *errp)
+ int *errp,
+ struct netlink_ext_ack *extack)
{
struct xfrm_state *x = xfrm_state_alloc(net);
int err = -ENOMEM;
@@ -606,21 +694,21 @@ static struct xfrm_state *xfrm_state_construct(struct net *net,
if (attrs[XFRMA_SA_EXTRA_FLAGS])
x->props.extra_flags = nla_get_u32(attrs[XFRMA_SA_EXTRA_FLAGS]);
- if ((err = attach_aead(x, attrs[XFRMA_ALG_AEAD])))
+ if ((err = attach_aead(x, attrs[XFRMA_ALG_AEAD], extack)))
goto error;
if ((err = attach_auth_trunc(&x->aalg, &x->props.aalgo,
- attrs[XFRMA_ALG_AUTH_TRUNC])))
+ attrs[XFRMA_ALG_AUTH_TRUNC], extack)))
goto error;
if (!x->props.aalgo) {
if ((err = attach_auth(&x->aalg, &x->props.aalgo,
- attrs[XFRMA_ALG_AUTH])))
+ attrs[XFRMA_ALG_AUTH], extack)))
goto error;
}
- if ((err = attach_crypt(x, attrs[XFRMA_ALG_CRYPT])))
+ if ((err = attach_crypt(x, attrs[XFRMA_ALG_CRYPT], extack)))
goto error;
if ((err = attach_one_algo(&x->calg, &x->props.calgo,
xfrm_calg_get_byname,
- attrs[XFRMA_ALG_COMP])))
+ attrs[XFRMA_ALG_COMP], extack)))
goto error;
if (attrs[XFRMA_TFCPAD])
@@ -630,15 +718,10 @@ static struct xfrm_state *xfrm_state_construct(struct net *net,
xfrm_smark_init(attrs, &x->props.smark);
- if (attrs[XFRMA_IF_ID]) {
+ if (attrs[XFRMA_IF_ID])
x->if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
- if (!x->if_id) {
- err = -EINVAL;
- goto error;
- }
- }
- err = __xfrm_init_state(x, false, attrs[XFRMA_OFFLOAD_DEV]);
+ err = __xfrm_init_state(x, false, attrs[XFRMA_OFFLOAD_DEV], extack);
if (err)
goto error;
@@ -658,7 +741,7 @@ static struct xfrm_state *xfrm_state_construct(struct net *net,
/* sysctl_xfrm_aevent_etime is in 100ms units */
x->replay_maxage = (net->xfrm.sysctl_aevent_etime*HZ)/XFRM_AE_ETH_M;
- if ((err = xfrm_init_replay(x)))
+ if ((err = xfrm_init_replay(x, extack)))
goto error;
/* override default values from above */
@@ -667,7 +750,8 @@ static struct xfrm_state *xfrm_state_construct(struct net *net,
/* configure the hardware if offload is requested */
if (attrs[XFRMA_OFFLOAD_DEV]) {
err = xfrm_dev_state_add(net, x,
- nla_data(attrs[XFRMA_OFFLOAD_DEV]));
+ nla_data(attrs[XFRMA_OFFLOAD_DEV]),
+ extack);
if (err)
goto error;
}
@@ -683,7 +767,7 @@ error_no_put:
}
static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs, struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrm_usersa_info *p = nlmsg_data(nlh);
@@ -691,11 +775,11 @@ static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
int err;
struct km_event c;
- err = verify_newsa_info(p, attrs);
+ err = verify_newsa_info(p, attrs, extack);
if (err)
return err;
- x = xfrm_state_construct(net, p, attrs, &err);
+ x = xfrm_state_construct(net, p, attrs, &err, extack);
if (!x)
return err;
@@ -762,7 +846,7 @@ static struct xfrm_state *xfrm_user_state_lookup(struct net *net,
}
static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs, struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrm_state *x;
@@ -845,7 +929,7 @@ static int copy_sec_ctx(struct xfrm_sec_ctx *s, struct sk_buff *skb)
return 0;
}
-static int copy_user_offload(struct xfrm_state_offload *xso, struct sk_buff *skb)
+static int copy_user_offload(struct xfrm_dev_offload *xso, struct sk_buff *skb)
{
struct xfrm_user_offload *xuo;
struct nlattr *attr;
@@ -857,7 +941,8 @@ static int copy_user_offload(struct xfrm_state_offload *xso, struct sk_buff *skb
xuo = nla_data(attr);
memset(xuo, 0, sizeof(*xuo));
xuo->ifindex = xso->dev->ifindex;
- xuo->flags = xso->flags;
+ if (xso->dir == XFRM_DEV_OFFLOAD_IN)
+ xuo->flags = XFRM_OFFLOAD_INBOUND;
return 0;
}
@@ -1258,7 +1343,8 @@ static int build_spdinfo(struct sk_buff *skb, struct net *net,
}
static int xfrm_set_spdinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrmu_spdhthresh *thresh4 = NULL;
@@ -1303,7 +1389,8 @@ static int xfrm_set_spdinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int xfrm_get_spdinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct sk_buff *r_skb;
@@ -1362,7 +1449,8 @@ static int build_sadinfo(struct sk_buff *skb, struct net *net,
}
static int xfrm_get_sadinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct sk_buff *r_skb;
@@ -1382,7 +1470,7 @@ static int xfrm_get_sadinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int xfrm_get_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs, struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrm_usersa_id *p = nlmsg_data(nlh);
@@ -1406,7 +1494,8 @@ out_noput:
}
static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrm_state *x;
@@ -1432,13 +1521,8 @@ static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
mark = xfrm_mark_get(attrs, &m);
- if (attrs[XFRMA_IF_ID]) {
+ if (attrs[XFRMA_IF_ID])
if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
- if (!if_id) {
- err = -EINVAL;
- goto out_noput;
- }
- }
if (p->info.seq) {
x = xfrm_find_acq_byseq(net, mark, p->info.seq);
@@ -1486,7 +1570,7 @@ out_noput:
return err;
}
-static int verify_policy_dir(u8 dir)
+static int verify_policy_dir(u8 dir, struct netlink_ext_ack *extack)
{
switch (dir) {
case XFRM_POLICY_IN:
@@ -1495,13 +1579,14 @@ static int verify_policy_dir(u8 dir)
break;
default:
+ NL_SET_ERR_MSG(extack, "Invalid policy direction");
return -EINVAL;
}
return 0;
}
-static int verify_policy_type(u8 type)
+static int verify_policy_type(u8 type, struct netlink_ext_ack *extack)
{
switch (type) {
case XFRM_POLICY_TYPE_MAIN:
@@ -1511,13 +1596,15 @@ static int verify_policy_type(u8 type)
break;
default:
+ NL_SET_ERR_MSG(extack, "Invalid policy type");
return -EINVAL;
}
return 0;
}
-static int verify_newpolicy_info(struct xfrm_userpolicy_info *p)
+static int verify_newpolicy_info(struct xfrm_userpolicy_info *p,
+ struct netlink_ext_ack *extack)
{
int ret;
@@ -1529,6 +1616,7 @@ static int verify_newpolicy_info(struct xfrm_userpolicy_info *p)
break;
default:
+ NL_SET_ERR_MSG(extack, "Invalid policy share");
return -EINVAL;
}
@@ -1538,35 +1626,44 @@ static int verify_newpolicy_info(struct xfrm_userpolicy_info *p)
break;
default:
+ NL_SET_ERR_MSG(extack, "Invalid policy action");
return -EINVAL;
}
switch (p->sel.family) {
case AF_INET:
- if (p->sel.prefixlen_d > 32 || p->sel.prefixlen_s > 32)
+ if (p->sel.prefixlen_d > 32 || p->sel.prefixlen_s > 32) {
+ NL_SET_ERR_MSG(extack, "Invalid prefix length in selector (must be <= 32 for IPv4)");
return -EINVAL;
+ }
break;
case AF_INET6:
#if IS_ENABLED(CONFIG_IPV6)
- if (p->sel.prefixlen_d > 128 || p->sel.prefixlen_s > 128)
+ if (p->sel.prefixlen_d > 128 || p->sel.prefixlen_s > 128) {
+ NL_SET_ERR_MSG(extack, "Invalid prefix length in selector (must be <= 128 for IPv6)");
return -EINVAL;
+ }
break;
#else
+ NL_SET_ERR_MSG(extack, "IPv6 support disabled");
return -EAFNOSUPPORT;
#endif
default:
+ NL_SET_ERR_MSG(extack, "Invalid selector family");
return -EINVAL;
}
- ret = verify_policy_dir(p->dir);
+ ret = verify_policy_dir(p->dir, extack);
if (ret)
return ret;
- if (p->index && (xfrm_policy_id2dir(p->index) != p->dir))
+ if (p->index && (xfrm_policy_id2dir(p->index) != p->dir)) {
+ NL_SET_ERR_MSG(extack, "Policy index doesn't match direction");
return -EINVAL;
+ }
return 0;
}
@@ -1608,13 +1705,16 @@ static void copy_templates(struct xfrm_policy *xp, struct xfrm_user_tmpl *ut,
}
}
-static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family)
+static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family,
+ struct netlink_ext_ack *extack)
{
u16 prev_family;
int i;
- if (nr > XFRM_MAX_DEPTH)
+ if (nr > XFRM_MAX_DEPTH) {
+ NL_SET_ERR_MSG(extack, "Template count must be <= XFRM_MAX_DEPTH (" __stringify(XFRM_MAX_DEPTH) ")");
return -EINVAL;
+ }
prev_family = family;
@@ -1634,12 +1734,16 @@ static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family)
case XFRM_MODE_BEET:
break;
default:
- if (ut[i].family != prev_family)
+ if (ut[i].family != prev_family) {
+ NL_SET_ERR_MSG(extack, "Mode in template doesn't support a family change");
return -EINVAL;
+ }
break;
}
- if (ut[i].mode >= XFRM_MODE_MAX)
+ if (ut[i].mode >= XFRM_MODE_MAX) {
+ NL_SET_ERR_MSG(extack, "Mode in template must be < XFRM_MODE_MAX (" __stringify(XFRM_MODE_MAX) ")");
return -EINVAL;
+ }
prev_family = ut[i].family;
@@ -1651,17 +1755,21 @@ static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family)
break;
#endif
default:
+ NL_SET_ERR_MSG(extack, "Invalid family in template");
return -EINVAL;
}
- if (!xfrm_id_proto_valid(ut[i].id.proto))
+ if (!xfrm_id_proto_valid(ut[i].id.proto)) {
+ NL_SET_ERR_MSG(extack, "Invalid XFRM protocol in template");
return -EINVAL;
+ }
}
return 0;
}
-static int copy_from_user_tmpl(struct xfrm_policy *pol, struct nlattr **attrs)
+static int copy_from_user_tmpl(struct xfrm_policy *pol, struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct nlattr *rt = attrs[XFRMA_TMPL];
@@ -1672,7 +1780,7 @@ static int copy_from_user_tmpl(struct xfrm_policy *pol, struct nlattr **attrs)
int nr = nla_len(rt) / sizeof(*utmpl);
int err;
- err = validate_tmpl(nr, utmpl, pol->family);
+ err = validate_tmpl(nr, utmpl, pol->family, extack);
if (err)
return err;
@@ -1681,7 +1789,8 @@ static int copy_from_user_tmpl(struct xfrm_policy *pol, struct nlattr **attrs)
return 0;
}
-static int copy_from_user_policy_type(u8 *tp, struct nlattr **attrs)
+static int copy_from_user_policy_type(u8 *tp, struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct nlattr *rt = attrs[XFRMA_POLICY_TYPE];
struct xfrm_userpolicy_type *upt;
@@ -1693,7 +1802,7 @@ static int copy_from_user_policy_type(u8 *tp, struct nlattr **attrs)
type = upt->type;
}
- err = verify_policy_type(type);
+ err = verify_policy_type(type, extack);
if (err)
return err;
@@ -1728,7 +1837,11 @@ static void copy_to_user_policy(struct xfrm_policy *xp, struct xfrm_userpolicy_i
p->share = XFRM_SHARE_ANY; /* XXX xp->share */
}
-static struct xfrm_policy *xfrm_policy_construct(struct net *net, struct xfrm_userpolicy_info *p, struct nlattr **attrs, int *errp)
+static struct xfrm_policy *xfrm_policy_construct(struct net *net,
+ struct xfrm_userpolicy_info *p,
+ struct nlattr **attrs,
+ int *errp,
+ struct netlink_ext_ack *extack)
{
struct xfrm_policy *xp = xfrm_policy_alloc(net, GFP_KERNEL);
int err;
@@ -1740,24 +1853,19 @@ static struct xfrm_policy *xfrm_policy_construct(struct net *net, struct xfrm_us
copy_from_user_policy(xp, p);
- err = copy_from_user_policy_type(&xp->type, attrs);
+ err = copy_from_user_policy_type(&xp->type, attrs, extack);
if (err)
goto error;
- if (!(err = copy_from_user_tmpl(xp, attrs)))
+ if (!(err = copy_from_user_tmpl(xp, attrs, extack)))
err = copy_from_user_sec_ctx(xp, attrs);
if (err)
goto error;
xfrm_mark_get(attrs, &xp->mark);
- if (attrs[XFRMA_IF_ID]) {
+ if (attrs[XFRMA_IF_ID])
xp->if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
- if (!xp->if_id) {
- err = -EINVAL;
- goto error;
- }
- }
return xp;
error:
@@ -1768,7 +1876,8 @@ static struct xfrm_policy *xfrm_policy_construct(struct net *net, struct xfrm_us
}
static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrm_userpolicy_info *p = nlmsg_data(nlh);
@@ -1777,14 +1886,14 @@ static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
int err;
int excl;
- err = verify_newpolicy_info(p);
+ err = verify_newpolicy_info(p, extack);
if (err)
return err;
- err = verify_sec_ctx_len(attrs);
+ err = verify_sec_ctx_len(attrs, extack);
if (err)
return err;
- xp = xfrm_policy_construct(net, p, attrs, &err);
+ xp = xfrm_policy_construct(net, p, attrs, &err, extack);
if (!xp)
return err;
@@ -2009,12 +2118,9 @@ static int xfrm_notify_userpolicy(struct net *net)
}
up = nlmsg_data(nlh);
- up->in = net->xfrm.policy_default & XFRM_POL_DEFAULT_IN ?
- XFRM_USERPOLICY_BLOCK : XFRM_USERPOLICY_ACCEPT;
- up->fwd = net->xfrm.policy_default & XFRM_POL_DEFAULT_FWD ?
- XFRM_USERPOLICY_BLOCK : XFRM_USERPOLICY_ACCEPT;
- up->out = net->xfrm.policy_default & XFRM_POL_DEFAULT_OUT ?
- XFRM_USERPOLICY_BLOCK : XFRM_USERPOLICY_ACCEPT;
+ up->in = net->xfrm.policy_default[XFRM_POLICY_IN];
+ up->fwd = net->xfrm.policy_default[XFRM_POLICY_FWD];
+ up->out = net->xfrm.policy_default[XFRM_POLICY_OUT];
nlmsg_end(skb, nlh);
@@ -2025,26 +2131,26 @@ static int xfrm_notify_userpolicy(struct net *net)
return err;
}
+static bool xfrm_userpolicy_is_valid(__u8 policy)
+{
+ return policy == XFRM_USERPOLICY_BLOCK ||
+ policy == XFRM_USERPOLICY_ACCEPT;
+}
+
static int xfrm_set_default(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs, struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrm_userpolicy_default *up = nlmsg_data(nlh);
- if (up->in == XFRM_USERPOLICY_BLOCK)
- net->xfrm.policy_default |= XFRM_POL_DEFAULT_IN;
- else if (up->in == XFRM_USERPOLICY_ACCEPT)
- net->xfrm.policy_default &= ~XFRM_POL_DEFAULT_IN;
+ if (xfrm_userpolicy_is_valid(up->in))
+ net->xfrm.policy_default[XFRM_POLICY_IN] = up->in;
- if (up->fwd == XFRM_USERPOLICY_BLOCK)
- net->xfrm.policy_default |= XFRM_POL_DEFAULT_FWD;
- else if (up->fwd == XFRM_USERPOLICY_ACCEPT)
- net->xfrm.policy_default &= ~XFRM_POL_DEFAULT_FWD;
+ if (xfrm_userpolicy_is_valid(up->fwd))
+ net->xfrm.policy_default[XFRM_POLICY_FWD] = up->fwd;
- if (up->out == XFRM_USERPOLICY_BLOCK)
- net->xfrm.policy_default |= XFRM_POL_DEFAULT_OUT;
- else if (up->out == XFRM_USERPOLICY_ACCEPT)
- net->xfrm.policy_default &= ~XFRM_POL_DEFAULT_OUT;
+ if (xfrm_userpolicy_is_valid(up->out))
+ net->xfrm.policy_default[XFRM_POLICY_OUT] = up->out;
rt_genid_bump_all(net);
@@ -2053,7 +2159,7 @@ static int xfrm_set_default(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int xfrm_get_default(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs, struct netlink_ext_ack *extack)
{
struct sk_buff *r_skb;
struct nlmsghdr *r_nlh;
@@ -2074,20 +2180,17 @@ static int xfrm_get_default(struct sk_buff *skb, struct nlmsghdr *nlh,
}
r_up = nlmsg_data(r_nlh);
-
- r_up->in = net->xfrm.policy_default & XFRM_POL_DEFAULT_IN ?
- XFRM_USERPOLICY_BLOCK : XFRM_USERPOLICY_ACCEPT;
- r_up->fwd = net->xfrm.policy_default & XFRM_POL_DEFAULT_FWD ?
- XFRM_USERPOLICY_BLOCK : XFRM_USERPOLICY_ACCEPT;
- r_up->out = net->xfrm.policy_default & XFRM_POL_DEFAULT_OUT ?
- XFRM_USERPOLICY_BLOCK : XFRM_USERPOLICY_ACCEPT;
+ r_up->in = net->xfrm.policy_default[XFRM_POLICY_IN];
+ r_up->fwd = net->xfrm.policy_default[XFRM_POLICY_FWD];
+ r_up->out = net->xfrm.policy_default[XFRM_POLICY_OUT];
nlmsg_end(r_skb, r_nlh);
return nlmsg_unicast(net->xfrm.nlsk, r_skb, portid);
}
static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrm_policy *xp;
@@ -2102,11 +2205,11 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
p = nlmsg_data(nlh);
delete = nlh->nlmsg_type == XFRM_MSG_DELPOLICY;
- err = copy_from_user_policy_type(&type, attrs);
+ err = copy_from_user_policy_type(&type, attrs, extack);
if (err)
return err;
- err = verify_policy_dir(p->dir);
+ err = verify_policy_dir(p->dir, extack);
if (err)
return err;
@@ -2122,7 +2225,7 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
struct nlattr *rt = attrs[XFRMA_SEC_CTX];
struct xfrm_sec_ctx *ctx;
- err = verify_sec_ctx_len(attrs);
+ err = verify_sec_ctx_len(attrs, extack);
if (err)
return err;
@@ -2170,7 +2273,8 @@ out:
}
static int xfrm_flush_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct km_event c;
@@ -2270,7 +2374,7 @@ out_cancel:
}
static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs, struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrm_state *x;
@@ -2314,7 +2418,7 @@ static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int xfrm_new_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs, struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrm_state *x;
@@ -2365,14 +2469,15 @@ out:
}
static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct km_event c;
u8 type = XFRM_POLICY_TYPE_MAIN;
int err;
- err = copy_from_user_policy_type(&type, attrs);
+ err = copy_from_user_policy_type(&type, attrs, extack);
if (err)
return err;
@@ -2393,7 +2498,8 @@ static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrm_policy *xp;
@@ -2404,11 +2510,11 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
struct xfrm_mark m;
u32 if_id = 0;
- err = copy_from_user_policy_type(&type, attrs);
+ err = copy_from_user_policy_type(&type, attrs, extack);
if (err)
return err;
- err = verify_policy_dir(p->dir);
+ err = verify_policy_dir(p->dir, extack);
if (err)
return err;
@@ -2424,7 +2530,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
struct nlattr *rt = attrs[XFRMA_SEC_CTX];
struct xfrm_sec_ctx *ctx;
- err = verify_sec_ctx_len(attrs);
+ err = verify_sec_ctx_len(attrs, extack);
if (err)
return err;
@@ -2459,7 +2565,8 @@ out:
}
static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrm_state *x;
@@ -2493,7 +2600,8 @@ out:
}
static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs,
+ struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct xfrm_policy *xp;
@@ -2511,15 +2619,15 @@ static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh,
xfrm_mark_get(attrs, &mark);
- err = verify_newpolicy_info(&ua->policy);
+ err = verify_newpolicy_info(&ua->policy, extack);
if (err)
goto free_state;
- err = verify_sec_ctx_len(attrs);
+ err = verify_sec_ctx_len(attrs, extack);
if (err)
goto free_state;
/* build an XP */
- xp = xfrm_policy_construct(net, &ua->policy, attrs, &err);
+ xp = xfrm_policy_construct(net, &ua->policy, attrs, &err, extack);
if (!xp)
goto free_state;
@@ -2598,7 +2706,7 @@ static int copy_from_user_migrate(struct xfrm_migrate *ma,
}
static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs, struct netlink_ext_ack *extack)
{
struct xfrm_userpolicy_id *pi = nlmsg_data(nlh);
struct xfrm_migrate m[XFRM_MAX_DEPTH];
@@ -2608,13 +2716,14 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
int n = 0;
struct net *net = sock_net(skb->sk);
struct xfrm_encap_tmpl *encap = NULL;
+ u32 if_id = 0;
if (attrs[XFRMA_MIGRATE] == NULL)
return -EINVAL;
kmp = attrs[XFRMA_KMADDRESS] ? &km : NULL;
- err = copy_from_user_policy_type(&type, attrs);
+ err = copy_from_user_policy_type(&type, attrs, extack);
if (err)
return err;
@@ -2632,7 +2741,10 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
return -ENOMEM;
}
- err = xfrm_migrate(&pi->sel, pi->dir, type, m, n, kmp, net, encap);
+ if (attrs[XFRMA_IF_ID])
+ if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
+
+ err = xfrm_migrate(&pi->sel, pi->dir, type, m, n, kmp, net, encap, if_id);
kfree(encap);
@@ -2640,7 +2752,7 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
}
#else
static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct nlattr **attrs)
+ struct nlattr **attrs, struct netlink_ext_ack *extack)
{
return -ENOPROTOOPT;
}
@@ -2836,7 +2948,8 @@ static const struct nla_policy xfrma_spd_policy[XFRMA_SPD_MAX+1] = {
};
static const struct xfrm_link {
- int (*doit)(struct sk_buff *, struct nlmsghdr *, struct nlattr **);
+ int (*doit)(struct sk_buff *, struct nlmsghdr *, struct nlattr **,
+ struct netlink_ext_ack *);
int (*start)(struct netlink_callback *);
int (*dump)(struct sk_buff *, struct netlink_callback *);
int (*done)(struct netlink_callback *);
@@ -2938,7 +3051,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,
goto err;
}
- err = link->doit(skb, nlh, attrs);
+ err = link->doit(skb, nlh, attrs, extack);
/* We need to free skb allocated in xfrm_alloc_compat() before
* returning from this function, because consume_skb() won't take
@@ -3289,11 +3402,11 @@ static struct xfrm_policy *xfrm_compile_policy(struct sock *sk, int opt,
*dir = -EINVAL;
if (len < sizeof(*p) ||
- verify_newpolicy_info(p))
+ verify_newpolicy_info(p, NULL))
return NULL;
nr = ((len - sizeof(*p)) / sizeof(*ut));
- if (validate_tmpl(nr, ut, p->sel.family))
+ if (validate_tmpl(nr, ut, p->sel.family, NULL))
return NULL;
if (p->dir > XFRM_POLICY_OUT)
@@ -3650,10 +3763,8 @@ static int __init xfrm_user_init(void)
rv = register_pernet_subsys(&xfrm_user_net_ops);
if (rv < 0)
return rv;
- rv = xfrm_register_km(&netlink_mgr);
- if (rv < 0)
- unregister_pernet_subsys(&xfrm_user_net_ops);
- return rv;
+ xfrm_register_km(&netlink_mgr);
+ return 0;
}
static void __exit xfrm_user_exit(void)
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.