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-rw-r--r--net/core/devlink.c10
-rw-r--r--net/core/flow_dissector.c18
-rw-r--r--net/core/link_watch.c5
-rw-r--r--net/core/page_pool.c10
-rw-r--r--net/core/rtnetlink.c3
-rw-r--r--net/core/skmsg.c39
6 files changed, 53 insertions, 32 deletions
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 8fdd04f00fd7..85032626de24 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -9328,18 +9328,10 @@ static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
switch (attrs->flavour) {
case DEVLINK_PORT_FLAVOUR_PHYSICAL:
- case DEVLINK_PORT_FLAVOUR_VIRTUAL:
n = snprintf(name, len, "p%u", attrs->phys.port_number);
if (n < len && attrs->split)
n += snprintf(name + n, len - n, "s%u",
attrs->phys.split_subport_number);
- if (!attrs->split)
- n = snprintf(name, len, "p%u", attrs->phys.port_number);
- else
- n = snprintf(name, len, "p%us%u",
- attrs->phys.port_number,
- attrs->phys.split_subport_number);
-
break;
case DEVLINK_PORT_FLAVOUR_CPU:
case DEVLINK_PORT_FLAVOUR_DSA:
@@ -9381,6 +9373,8 @@ static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
attrs->pci_sf.sf);
break;
+ case DEVLINK_PORT_FLAVOUR_VIRTUAL:
+ return -EOPNOTSUPP;
}
if (n >= len)
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 2aadbfc5193b..4b2415d34873 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -1504,7 +1504,7 @@ __be32 flow_get_u32_dst(const struct flow_keys *flow)
}
EXPORT_SYMBOL(flow_get_u32_dst);
-/* Sort the source and destination IP (and the ports if the IP are the same),
+/* Sort the source and destination IP and the ports,
* to have consistent hash within the two directions
*/
static inline void __flow_hash_consistentify(struct flow_keys *keys)
@@ -1515,11 +1515,11 @@ static inline void __flow_hash_consistentify(struct flow_keys *keys)
case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
addr_diff = (__force u32)keys->addrs.v4addrs.dst -
(__force u32)keys->addrs.v4addrs.src;
- if ((addr_diff < 0) ||
- (addr_diff == 0 &&
- ((__force u16)keys->ports.dst <
- (__force u16)keys->ports.src))) {
+ if (addr_diff < 0)
swap(keys->addrs.v4addrs.src, keys->addrs.v4addrs.dst);
+
+ if ((__force u16)keys->ports.dst <
+ (__force u16)keys->ports.src) {
swap(keys->ports.src, keys->ports.dst);
}
break;
@@ -1527,13 +1527,13 @@ static inline void __flow_hash_consistentify(struct flow_keys *keys)
addr_diff = memcmp(&keys->addrs.v6addrs.dst,
&keys->addrs.v6addrs.src,
sizeof(keys->addrs.v6addrs.dst));
- if ((addr_diff < 0) ||
- (addr_diff == 0 &&
- ((__force u16)keys->ports.dst <
- (__force u16)keys->ports.src))) {
+ if (addr_diff < 0) {
for (i = 0; i < 4; i++)
swap(keys->addrs.v6addrs.src.s6_addr32[i],
keys->addrs.v6addrs.dst.s6_addr32[i]);
+ }
+ if ((__force u16)keys->ports.dst <
+ (__force u16)keys->ports.src) {
swap(keys->ports.src, keys->ports.dst);
}
break;
diff --git a/net/core/link_watch.c b/net/core/link_watch.c
index 75431ca9300f..1a455847da54 100644
--- a/net/core/link_watch.c
+++ b/net/core/link_watch.c
@@ -158,7 +158,7 @@ static void linkwatch_do_dev(struct net_device *dev)
clear_bit(__LINK_STATE_LINKWATCH_PENDING, &dev->state);
rfc2863_policy(dev);
- if (dev->flags & IFF_UP && netif_device_present(dev)) {
+ if (dev->flags & IFF_UP) {
if (netif_carrier_ok(dev))
dev_activate(dev);
else
@@ -204,7 +204,8 @@ static void __linkwatch_run_queue(int urgent_only)
dev = list_first_entry(&wrk, struct net_device, link_watch_list);
list_del_init(&dev->link_watch_list);
- if (urgent_only && !linkwatch_urgent_event(dev)) {
+ if (!netif_device_present(dev) ||
+ (urgent_only && !linkwatch_urgent_event(dev))) {
list_add_tail(&dev->link_watch_list, &lweventlist);
continue;
}
diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index 5e4eb45b139c..8ab7b402244c 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -634,7 +634,15 @@ bool page_pool_return_skb_page(struct page *page)
struct page_pool *pp;
page = compound_head(page);
- if (unlikely(page->pp_magic != PP_SIGNATURE))
+
+ /* page->pp_magic is OR'ed with PP_SIGNATURE after the allocation
+ * in order to preserve any existing bits, such as bit 0 for the
+ * head page of compound page and bit 1 for pfmemalloc page, so
+ * mask those bits for freeing side when doing below checking,
+ * and page_is_pfmemalloc() is checked in __page_pool_put_page()
+ * to avoid recycling the pfmemalloc page.
+ */
+ if (unlikely((page->pp_magic & ~0x3UL) != PP_SIGNATURE))
return false;
pp = page->pp;
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index f6af3e74fc44..662eb1c37f47 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2608,6 +2608,7 @@ static int do_setlink(const struct sk_buff *skb,
return err;
if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD] || tb[IFLA_TARGET_NETNSID]) {
+ const char *pat = ifname && ifname[0] ? ifname : NULL;
struct net *net;
int new_ifindex;
@@ -2623,7 +2624,7 @@ static int do_setlink(const struct sk_buff *skb,
else
new_ifindex = 0;
- err = __dev_change_net_namespace(dev, net, ifname, new_ifindex);
+ err = __dev_change_net_namespace(dev, net, pat, new_ifindex);
put_net(net);
if (err)
goto errout;
diff --git a/net/core/skmsg.c b/net/core/skmsg.c
index 15d71288e741..2d6249b28928 100644
--- a/net/core/skmsg.c
+++ b/net/core/skmsg.c
@@ -584,29 +584,42 @@ static int sk_psock_handle_skb(struct sk_psock *psock, struct sk_buff *skb,
return sk_psock_skb_ingress(psock, skb);
}
-static void sock_drop(struct sock *sk, struct sk_buff *skb)
+static void sk_psock_skb_state(struct sk_psock *psock,
+ struct sk_psock_work_state *state,
+ struct sk_buff *skb,
+ int len, int off)
{
- sk_drops_add(sk, skb);
- kfree_skb(skb);
+ spin_lock_bh(&psock->ingress_lock);
+ if (sk_psock_test_state(psock, SK_PSOCK_TX_ENABLED)) {
+ state->skb = skb;
+ state->len = len;
+ state->off = off;
+ } else {
+ sock_drop(psock->sk, skb);
+ }
+ spin_unlock_bh(&psock->ingress_lock);
}
static void sk_psock_backlog(struct work_struct *work)
{
struct sk_psock *psock = container_of(work, struct sk_psock, work);
struct sk_psock_work_state *state = &psock->work_state;
- struct sk_buff *skb;
+ struct sk_buff *skb = NULL;
bool ingress;
u32 len, off;
int ret;
mutex_lock(&psock->work_mutex);
- if (state->skb) {
+ if (unlikely(state->skb)) {
+ spin_lock_bh(&psock->ingress_lock);
skb = state->skb;
len = state->len;
off = state->off;
state->skb = NULL;
- goto start;
+ spin_unlock_bh(&psock->ingress_lock);
}
+ if (skb)
+ goto start;
while ((skb = skb_dequeue(&psock->ingress_skb))) {
len = skb->len;
@@ -621,9 +634,8 @@ start:
len, ingress);
if (ret <= 0) {
if (ret == -EAGAIN) {
- state->skb = skb;
- state->len = len;
- state->off = off;
+ sk_psock_skb_state(psock, state, skb,
+ len, off);
goto end;
}
/* Hard errors break pipe and stop xmit. */
@@ -722,6 +734,11 @@ static void __sk_psock_zap_ingress(struct sk_psock *psock)
skb_bpf_redirect_clear(skb);
sock_drop(psock->sk, skb);
}
+ kfree_skb(psock->work_state.skb);
+ /* We null the skb here to ensure that calls to sk_psock_backlog
+ * do not pick up the free'd skb.
+ */
+ psock->work_state.skb = NULL;
__sk_psock_purge_ingress_msg(psock);
}
@@ -773,8 +790,6 @@ static void sk_psock_destroy(struct work_struct *work)
void sk_psock_drop(struct sock *sk, struct sk_psock *psock)
{
- sk_psock_stop(psock, false);
-
write_lock_bh(&sk->sk_callback_lock);
sk_psock_restore_proto(sk, psock);
rcu_assign_sk_user_data(sk, NULL);
@@ -784,6 +799,8 @@ void sk_psock_drop(struct sock *sk, struct sk_psock *psock)
sk_psock_stop_verdict(sk, psock);
write_unlock_bh(&sk->sk_callback_lock);
+ sk_psock_stop(psock, false);
+
INIT_RCU_WORK(&psock->rwork, sk_psock_destroy);
queue_rcu_work(system_wq, &psock->rwork);
}
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