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-rw-r--r--include/net/ax25.h12
-rw-r--r--include/net/gro_cells.h23
-rw-r--r--include/net/icmp.h9
-rw-r--r--include/net/inet_connection_sock.h5
-rw-r--r--include/net/inetpeer.h1
-rw-r--r--include/net/ip.h2
-rw-r--r--include/net/ip_fib.h2
-rw-r--r--include/net/l3mdev.h3
-rw-r--r--include/net/neighbour.h28
-rw-r--r--include/net/netfilter/nf_tables.h29
-rw-r--r--include/net/phonet/pep.h5
-rw-r--r--include/net/sock.h36
-rw-r--r--include/net/tcp.h1
13 files changed, 135 insertions, 21 deletions
diff --git a/include/net/ax25.h b/include/net/ax25.h
index e602f8177ebf..b507ce2b1952 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -199,6 +199,18 @@ static inline void ax25_hold_route(ax25_route *ax25_rt)
void __ax25_put_route(ax25_route *ax25_rt);
+extern rwlock_t ax25_route_lock;
+
+static inline void ax25_route_lock_use(void)
+{
+ read_lock(&ax25_route_lock);
+}
+
+static inline void ax25_route_lock_unuse(void)
+{
+ read_unlock(&ax25_route_lock);
+}
+
static inline void ax25_put_route(ax25_route *ax25_rt)
{
if (atomic_dec_and_test(&ax25_rt->refcount))
diff --git a/include/net/gro_cells.h b/include/net/gro_cells.h
index 2a1abbf8da74..6db0e8534127 100644
--- a/include/net/gro_cells.h
+++ b/include/net/gro_cells.h
@@ -18,22 +18,36 @@ static inline int gro_cells_receive(struct gro_cells *gcells, struct sk_buff *sk
{
struct gro_cell *cell;
struct net_device *dev = skb->dev;
+ int res;
- if (!gcells->cells || skb_cloned(skb) || !(dev->features & NETIF_F_GRO))
- return netif_rx(skb);
+ rcu_read_lock();
+ if (unlikely(!(dev->flags & IFF_UP)))
+ goto drop;
+
+ if (!gcells->cells || skb_cloned(skb) || !(dev->features & NETIF_F_GRO)) {
+ res = netif_rx(skb);
+ goto unlock;
+ }
cell = this_cpu_ptr(gcells->cells);
if (skb_queue_len(&cell->napi_skbs) > netdev_max_backlog) {
+drop:
atomic_long_inc(&dev->rx_dropped);
kfree_skb(skb);
- return NET_RX_DROP;
+ res = NET_RX_DROP;
+ goto unlock;
}
__skb_queue_tail(&cell->napi_skbs, skb);
if (skb_queue_len(&cell->napi_skbs) == 1)
napi_schedule(&cell->napi);
- return NET_RX_SUCCESS;
+
+ res = NET_RX_SUCCESS;
+
+unlock:
+ rcu_read_unlock();
+ return res;
}
/* called under BH context */
@@ -86,6 +100,7 @@ static inline void gro_cells_destroy(struct gro_cells *gcells)
for_each_possible_cpu(i) {
struct gro_cell *cell = per_cpu_ptr(gcells->cells, i);
+ napi_disable(&cell->napi);
netif_napi_del(&cell->napi);
__skb_queue_purge(&cell->napi_skbs);
}
diff --git a/include/net/icmp.h b/include/net/icmp.h
index 3ef2743a8eec..8665bf24e3b7 100644
--- a/include/net/icmp.h
+++ b/include/net/icmp.h
@@ -22,6 +22,7 @@
#include <net/inet_sock.h>
#include <net/snmp.h>
+#include <net/ip.h>
struct icmp_err {
int errno;
@@ -39,7 +40,13 @@ struct net_proto_family;
struct sk_buff;
struct net;
-void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info);
+void __icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info,
+ const struct ip_options *opt);
+static inline void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
+{
+ __icmp_send(skb_in, type, code, info, &IPCB(skb_in)->opt);
+}
+
int icmp_rcv(struct sk_buff *skb);
void icmp_err(struct sk_buff *skb, u32 info);
int icmp_init(void);
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
index 197a30d221e9..146054ceea8e 100644
--- a/include/net/inet_connection_sock.h
+++ b/include/net/inet_connection_sock.h
@@ -289,11 +289,6 @@ static inline int inet_csk_reqsk_queue_len(const struct sock *sk)
return reqsk_queue_len(&inet_csk(sk)->icsk_accept_queue);
}
-static inline int inet_csk_reqsk_queue_young(const struct sock *sk)
-{
- return reqsk_queue_len_young(&inet_csk(sk)->icsk_accept_queue);
-}
-
static inline int inet_csk_reqsk_queue_is_full(const struct sock *sk)
{
return inet_csk_reqsk_queue_len(sk) >= sk->sk_max_ack_backlog;
diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index 235c7811a86a..408d76f47bd2 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -40,6 +40,7 @@ struct inet_peer {
u32 metrics[RTAX_MAX];
u32 rate_tokens; /* rate limiting for ICMP */
+ u32 n_redirects;
unsigned long rate_last;
union {
struct list_head gc_list;
diff --git a/include/net/ip.h b/include/net/ip.h
index 8646da034851..f06cd30bb44c 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -570,6 +570,8 @@ static inline int ip_options_echo(struct ip_options *dopt, struct sk_buff *skb)
}
void ip_options_fragment(struct sk_buff *skb);
+int __ip_options_compile(struct net *net, struct ip_options *opt,
+ struct sk_buff *skb, __be32 *info);
int ip_options_compile(struct net *net, struct ip_options *opt,
struct sk_buff *skb);
int ip_options_get(struct net *net, struct ip_options_rcu **optp,
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index a6446d72c5d9..a85028e06b1e 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -242,7 +242,7 @@ int fib_table_insert(struct net *, struct fib_table *, struct fib_config *);
int fib_table_delete(struct net *, struct fib_table *, struct fib_config *);
int fib_table_dump(struct fib_table *table, struct sk_buff *skb,
struct netlink_callback *cb);
-int fib_table_flush(struct net *net, struct fib_table *table);
+int fib_table_flush(struct net *net, struct fib_table *table, bool flush_all);
struct fib_table *fib_trie_unmerge(struct fib_table *main_tb);
void fib_table_flush_external(struct fib_table *table);
void fib_free_table(struct fib_table *tb);
diff --git a/include/net/l3mdev.h b/include/net/l3mdev.h
index 3832099289c5..128487658ff7 100644
--- a/include/net/l3mdev.h
+++ b/include/net/l3mdev.h
@@ -142,7 +142,8 @@ struct sk_buff *l3mdev_l3_rcv(struct sk_buff *skb, u16 proto)
if (netif_is_l3_slave(skb->dev))
master = netdev_master_upper_dev_get_rcu(skb->dev);
- else if (netif_is_l3_master(skb->dev))
+ else if (netif_is_l3_master(skb->dev) ||
+ netif_has_l3_rx_handler(skb->dev))
master = skb->dev;
if (master && master->l3mdev_ops->l3mdev_l3_rcv)
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 8b683841e574..f6017ddc4ded 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -448,6 +448,7 @@ static inline int neigh_hh_bridge(struct hh_cache *hh, struct sk_buff *skb)
static inline int neigh_hh_output(const struct hh_cache *hh, struct sk_buff *skb)
{
+ unsigned int hh_alen = 0;
unsigned int seq;
int hh_len;
@@ -455,16 +456,33 @@ static inline int neigh_hh_output(const struct hh_cache *hh, struct sk_buff *skb
seq = read_seqbegin(&hh->hh_lock);
hh_len = hh->hh_len;
if (likely(hh_len <= HH_DATA_MOD)) {
- /* this is inlined by gcc */
- memcpy(skb->data - HH_DATA_MOD, hh->hh_data, HH_DATA_MOD);
+ hh_alen = HH_DATA_MOD;
+
+ /* skb_push() would proceed silently if we have room for
+ * the unaligned size but not for the aligned size:
+ * check headroom explicitly.
+ */
+ if (likely(skb_headroom(skb) >= HH_DATA_MOD)) {
+ /* this is inlined by gcc */
+ memcpy(skb->data - HH_DATA_MOD, hh->hh_data,
+ HH_DATA_MOD);
+ }
} else {
- int hh_alen = HH_DATA_ALIGN(hh_len);
+ hh_alen = HH_DATA_ALIGN(hh_len);
- memcpy(skb->data - hh_alen, hh->hh_data, hh_alen);
+ if (likely(skb_headroom(skb) >= hh_alen)) {
+ memcpy(skb->data - hh_alen, hh->hh_data,
+ hh_alen);
+ }
}
} while (read_seqretry(&hh->hh_lock, seq));
- skb_push(skb, hh_len);
+ if (WARN_ON_ONCE(skb_headroom(skb) < hh_alen)) {
+ kfree_skb(skb);
+ return NET_XMIT_DROP;
+ }
+
+ __skb_push(skb, hh_len);
return dev_queue_xmit(skb);
}
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index b02af0bf5777..66f6b84df287 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -87,6 +87,35 @@ struct nft_regs {
};
};
+/* Store/load an u16 or u8 integer to/from the u32 data register.
+ *
+ * Note, when using concatenations, register allocation happens at 32-bit
+ * level. So for store instruction, pad the rest part with zero to avoid
+ * garbage values.
+ */
+
+static inline void nft_reg_store16(u32 *dreg, u16 val)
+{
+ *dreg = 0;
+ *(u16 *)dreg = val;
+}
+
+static inline void nft_reg_store8(u32 *dreg, u8 val)
+{
+ *dreg = 0;
+ *(u8 *)dreg = val;
+}
+
+static inline u16 nft_reg_load16(u32 *sreg)
+{
+ return *(u16 *)sreg;
+}
+
+static inline u8 nft_reg_load8(u32 *sreg)
+{
+ return *(u8 *)sreg;
+}
+
static inline void nft_data_copy(u32 *dst, const struct nft_data *src,
unsigned int len)
{
diff --git a/include/net/phonet/pep.h b/include/net/phonet/pep.h
index b669fe6dbc3b..98f31c7ea23d 100644
--- a/include/net/phonet/pep.h
+++ b/include/net/phonet/pep.h
@@ -63,10 +63,11 @@ struct pnpipehdr {
u8 state_after_reset; /* reset request */
u8 error_code; /* any response */
u8 pep_type; /* status indication */
- u8 data[1];
+ u8 data0; /* anything else */
};
+ u8 data[];
};
-#define other_pep_type data[1]
+#define other_pep_type data[0]
static inline struct pnpipehdr *pnp_hdr(struct sk_buff *skb)
{
diff --git a/include/net/sock.h b/include/net/sock.h
index 6d42ed883bf9..15bb04dec40e 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -284,6 +284,7 @@ struct sock_common {
* @sk_filter: socket filtering instructions
* @sk_timer: sock cleanup timer
* @sk_stamp: time stamp of last packet received
+ * @sk_stamp_seq: lock for accessing sk_stamp on 32 bit architectures only
* @sk_tsflags: SO_TIMESTAMPING socket options
* @sk_tskey: counter to disambiguate concurrent tstamp requests
* @sk_socket: Identd and reporting IO signals
@@ -425,6 +426,9 @@ struct sock {
long sk_sndtimeo;
struct timer_list sk_timer;
ktime_t sk_stamp;
+#if BITS_PER_LONG==32
+ seqlock_t sk_stamp_seq;
+#endif
u16 sk_tsflags;
u8 sk_shutdown;
u32 sk_tskey;
@@ -2114,6 +2118,34 @@ static inline void sk_drops_add(struct sock *sk, const struct sk_buff *skb)
atomic_add(segs, &sk->sk_drops);
}
+static inline ktime_t sock_read_timestamp(struct sock *sk)
+{
+#if BITS_PER_LONG==32
+ unsigned int seq;
+ ktime_t kt;
+
+ do {
+ seq = read_seqbegin(&sk->sk_stamp_seq);
+ kt = sk->sk_stamp;
+ } while (read_seqretry(&sk->sk_stamp_seq, seq));
+
+ return kt;
+#else
+ return sk->sk_stamp;
+#endif
+}
+
+static inline void sock_write_timestamp(struct sock *sk, ktime_t kt)
+{
+#if BITS_PER_LONG==32
+ write_seqlock(&sk->sk_stamp_seq);
+ sk->sk_stamp = kt;
+ write_sequnlock(&sk->sk_stamp_seq);
+#else
+ sk->sk_stamp = kt;
+#endif
+}
+
void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
struct sk_buff *skb);
void __sock_recv_wifi_status(struct msghdr *msg, struct sock *sk,
@@ -2138,7 +2170,7 @@ sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb)
(sk->sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE)))
__sock_recv_timestamp(msg, sk, skb);
else
- sk->sk_stamp = kt;
+ sock_write_timestamp(sk, kt);
if (sock_flag(sk, SOCK_WIFI_STATUS) && skb->wifi_acked_valid)
__sock_recv_wifi_status(msg, sk, skb);
@@ -2158,7 +2190,7 @@ static inline void sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk,
if (sk->sk_flags & FLAGS_TS_OR_DROPS || sk->sk_tsflags & TSFLAGS_ANY)
__sock_recv_ts_and_drops(msg, sk, skb);
else
- sk->sk_stamp = skb->tstamp;
+ sock_write_timestamp(sk, skb->tstamp);
}
void __sock_tx_timestamp(__u16 tsflags, __u8 *tx_flags);
diff --git a/include/net/tcp.h b/include/net/tcp.h
index c3f4f6a9e6c3..fed2a78fb8cb 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1526,6 +1526,7 @@ static inline void tcp_write_queue_purge(struct sock *sk)
sk_wmem_free_skb(sk, skb);
sk_mem_reclaim(sk);
tcp_clear_all_retrans_hints(tcp_sk(sk));
+ inet_csk(sk)->icsk_backoff = 0;
}
static inline struct sk_buff *tcp_write_queue_head(const struct sock *sk)
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-27 05:59:31 +0000