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Diffstat (limited to 'net/mctp/route.c')
-rw-r--r--net/mctp/route.c43
1 files changed, 31 insertions, 12 deletions
diff --git a/net/mctp/route.c b/net/mctp/route.c
index 0c2ed75a9e28..28648a7ec866 100644
--- a/net/mctp/route.c
+++ b/net/mctp/route.c
@@ -107,9 +107,12 @@ static struct mctp_sock *mctp_lookup_bind(struct net *net, struct sk_buff *skb)
* and peer addresses, or either being ANY.
*/
-static bool mctp_key_match(struct mctp_sk_key *key, mctp_eid_t local,
- mctp_eid_t peer, u8 tag)
+static bool mctp_key_match(struct mctp_sk_key *key, unsigned int net,
+ mctp_eid_t local, mctp_eid_t peer, u8 tag)
{
+ if (key->net != net)
+ return false;
+
if (!mctp_address_matches(key->local_addr, local))
return false;
@@ -126,7 +129,7 @@ static bool mctp_key_match(struct mctp_sk_key *key, mctp_eid_t local,
* key exists.
*/
static struct mctp_sk_key *mctp_lookup_key(struct net *net, struct sk_buff *skb,
- mctp_eid_t peer,
+ unsigned int netid, mctp_eid_t peer,
unsigned long *irqflags)
__acquires(&key->lock)
{
@@ -142,7 +145,7 @@ static struct mctp_sk_key *mctp_lookup_key(struct net *net, struct sk_buff *skb,
spin_lock_irqsave(&net->mctp.keys_lock, flags);
hlist_for_each_entry(key, &net->mctp.keys, hlist) {
- if (!mctp_key_match(key, mh->dest, peer, tag))
+ if (!mctp_key_match(key, netid, mh->dest, peer, tag))
continue;
spin_lock(&key->lock);
@@ -165,6 +168,7 @@ static struct mctp_sk_key *mctp_lookup_key(struct net *net, struct sk_buff *skb,
}
static struct mctp_sk_key *mctp_key_alloc(struct mctp_sock *msk,
+ unsigned int net,
mctp_eid_t local, mctp_eid_t peer,
u8 tag, gfp_t gfp)
{
@@ -174,6 +178,7 @@ static struct mctp_sk_key *mctp_key_alloc(struct mctp_sock *msk,
if (!key)
return NULL;
+ key->net = net;
key->peer_addr = peer;
key->local_addr = local;
key->tag = tag;
@@ -219,8 +224,8 @@ static int mctp_key_add(struct mctp_sk_key *key, struct mctp_sock *msk)
}
hlist_for_each_entry(tmp, &net->mctp.keys, hlist) {
- if (mctp_key_match(tmp, key->local_addr, key->peer_addr,
- key->tag)) {
+ if (mctp_key_match(tmp, key->net, key->local_addr,
+ key->peer_addr, key->tag)) {
spin_lock(&tmp->lock);
if (tmp->valid)
rc = -EEXIST;
@@ -361,6 +366,7 @@ static int mctp_route_input(struct mctp_route *route, struct sk_buff *skb)
struct net *net = dev_net(skb->dev);
struct mctp_sock *msk;
struct mctp_hdr *mh;
+ unsigned int netid;
unsigned long f;
u8 tag, flags;
int rc;
@@ -379,6 +385,7 @@ static int mctp_route_input(struct mctp_route *route, struct sk_buff *skb)
/* grab header, advance data ptr */
mh = mctp_hdr(skb);
+ netid = mctp_cb(skb)->net;
skb_pull(skb, sizeof(struct mctp_hdr));
if (mh->ver != 1)
@@ -392,7 +399,7 @@ static int mctp_route_input(struct mctp_route *route, struct sk_buff *skb)
/* lookup socket / reasm context, exactly matching (src,dest,tag).
* we hold a ref on the key, and key->lock held.
*/
- key = mctp_lookup_key(net, skb, mh->src, &f);
+ key = mctp_lookup_key(net, skb, netid, mh->src, &f);
if (flags & MCTP_HDR_FLAG_SOM) {
if (key) {
@@ -406,7 +413,8 @@ static int mctp_route_input(struct mctp_route *route, struct sk_buff *skb)
* this lookup requires key->peer to be MCTP_ADDR_ANY,
* it doesn't match just any key->peer.
*/
- any_key = mctp_lookup_key(net, skb, MCTP_ADDR_ANY, &f);
+ any_key = mctp_lookup_key(net, skb, netid,
+ MCTP_ADDR_ANY, &f);
if (any_key) {
msk = container_of(any_key->sk,
struct mctp_sock, sk);
@@ -443,7 +451,7 @@ static int mctp_route_input(struct mctp_route *route, struct sk_buff *skb)
* packets for this message
*/
if (!key) {
- key = mctp_key_alloc(msk, mh->dest, mh->src,
+ key = mctp_key_alloc(msk, netid, mh->dest, mh->src,
tag, GFP_ATOMIC);
if (!key) {
rc = -ENOMEM;
@@ -637,6 +645,7 @@ static void mctp_reserve_tag(struct net *net, struct mctp_sk_key *key,
* it for the socket msk
*/
struct mctp_sk_key *mctp_alloc_local_tag(struct mctp_sock *msk,
+ unsigned int netid,
mctp_eid_t local, mctp_eid_t peer,
bool manual, u8 *tagp)
{
@@ -651,7 +660,7 @@ struct mctp_sk_key *mctp_alloc_local_tag(struct mctp_sock *msk,
peer = MCTP_ADDR_ANY;
/* be optimistic, alloc now */
- key = mctp_key_alloc(msk, local, peer, 0, GFP_KERNEL);
+ key = mctp_key_alloc(msk, netid, local, peer, 0, GFP_KERNEL);
if (!key)
return ERR_PTR(-ENOMEM);
@@ -668,6 +677,10 @@ struct mctp_sk_key *mctp_alloc_local_tag(struct mctp_sock *msk,
* lock held, they don't change over the lifetime of the key.
*/
+ /* tags are net-specific */
+ if (tmp->net != netid)
+ continue;
+
/* if we don't own the tag, it can't conflict */
if (tmp->tag & MCTP_HDR_FLAG_TO)
continue;
@@ -716,6 +729,7 @@ struct mctp_sk_key *mctp_alloc_local_tag(struct mctp_sock *msk,
}
static struct mctp_sk_key *mctp_lookup_prealloc_tag(struct mctp_sock *msk,
+ unsigned int netid,
mctp_eid_t daddr,
u8 req_tag, u8 *tagp)
{
@@ -730,6 +744,9 @@ static struct mctp_sk_key *mctp_lookup_prealloc_tag(struct mctp_sock *msk,
spin_lock_irqsave(&mns->keys_lock, flags);
hlist_for_each_entry(tmp, &mns->keys, hlist) {
+ if (tmp->net != netid)
+ continue;
+
if (tmp->tag != req_tag)
continue;
@@ -910,6 +927,7 @@ int mctp_local_output(struct sock *sk, struct mctp_route *rt,
struct mctp_sk_key *key;
struct mctp_hdr *hdr;
unsigned long flags;
+ unsigned int netid;
unsigned int mtu;
mctp_eid_t saddr;
bool ext_rt;
@@ -960,16 +978,17 @@ int mctp_local_output(struct sock *sk, struct mctp_route *rt,
rc = 0;
}
spin_unlock_irqrestore(&rt->dev->addrs_lock, flags);
+ netid = READ_ONCE(rt->dev->net);
if (rc)
goto out_release;
if (req_tag & MCTP_TAG_OWNER) {
if (req_tag & MCTP_TAG_PREALLOC)
- key = mctp_lookup_prealloc_tag(msk, daddr,
+ key = mctp_lookup_prealloc_tag(msk, netid, daddr,
req_tag, &tag);
else
- key = mctp_alloc_local_tag(msk, saddr, daddr,
+ key = mctp_alloc_local_tag(msk, netid, saddr, daddr,
false, &tag);
if (IS_ERR(key)) {
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-06 23:11:29 +0000