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-rw-r--r--include/net/bluetooth/bluetooth.h65
-rw-r--r--include/net/bluetooth/l2cap.h1
-rw-r--r--include/net/busy_poll.h2
-rw-r--r--include/net/esp.h2
-rw-r--r--include/net/inet_sock.h5
-rw-r--r--include/net/ip.h4
-rw-r--r--include/net/sock.h2
-rw-r--r--include/net/tcp.h11
8 files changed, 79 insertions, 13 deletions
diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index fabee6db0..421d41ef4 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -370,6 +370,71 @@ out:
return NULL;
}
+/* Shall not be called with lock_sock held */
+static inline struct sk_buff *bt_skb_sendmsg(struct sock *sk,
+ struct msghdr *msg,
+ size_t len, size_t mtu,
+ size_t headroom, size_t tailroom)
+{
+ struct sk_buff *skb;
+ size_t size = min_t(size_t, len, mtu);
+ int err;
+
+ skb = bt_skb_send_alloc(sk, size + headroom + tailroom,
+ msg->msg_flags & MSG_DONTWAIT, &err);
+ if (!skb)
+ return ERR_PTR(err);
+
+ skb_reserve(skb, headroom);
+ skb_tailroom_reserve(skb, mtu, tailroom);
+
+ if (!copy_from_iter_full(skb_put(skb, size), size, &msg->msg_iter)) {
+ kfree_skb(skb);
+ return ERR_PTR(-EFAULT);
+ }
+
+ skb->priority = sk->sk_priority;
+
+ return skb;
+}
+
+/* Similar to bt_skb_sendmsg but can split the msg into multiple fragments
+ * accourding to the MTU.
+ */
+static inline struct sk_buff *bt_skb_sendmmsg(struct sock *sk,
+ struct msghdr *msg,
+ size_t len, size_t mtu,
+ size_t headroom, size_t tailroom)
+{
+ struct sk_buff *skb, **frag;
+
+ skb = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom);
+ if (IS_ERR_OR_NULL(skb))
+ return skb;
+
+ len -= skb->len;
+ if (!len)
+ return skb;
+
+ /* Add remaining data over MTU as continuation fragments */
+ frag = &skb_shinfo(skb)->frag_list;
+ while (len) {
+ struct sk_buff *tmp;
+
+ tmp = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom);
+ if (IS_ERR(tmp)) {
+ return skb;
+ }
+
+ len -= tmp->len;
+
+ *frag = tmp;
+ frag = &(*frag)->next;
+ }
+
+ return skb;
+}
+
int bt_to_errno(u16 code);
void hci_sock_set_flag(struct sock *sk, int nr);
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 21dbd38f7..da0ef935c 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -798,6 +798,7 @@ enum {
};
void l2cap_chan_hold(struct l2cap_chan *c);
+struct l2cap_chan *l2cap_chan_hold_unless_zero(struct l2cap_chan *c);
void l2cap_chan_put(struct l2cap_chan *c);
static inline void l2cap_chan_lock(struct l2cap_chan *chan)
diff --git a/include/net/busy_poll.h b/include/net/busy_poll.h
index c76a5e989..8f42f6f3a 100644
--- a/include/net/busy_poll.h
+++ b/include/net/busy_poll.h
@@ -43,7 +43,7 @@ extern unsigned int sysctl_net_busy_poll __read_mostly;
static inline bool net_busy_loop_on(void)
{
- return sysctl_net_busy_poll;
+ return READ_ONCE(sysctl_net_busy_poll);
}
static inline bool sk_can_busy_loop(const struct sock *sk)
diff --git a/include/net/esp.h b/include/net/esp.h
index 465e38890..117652eb6 100644
--- a/include/net/esp.h
+++ b/include/net/esp.h
@@ -4,8 +4,6 @@
#include <linux/skbuff.h>
-#define ESP_SKB_FRAG_MAXSIZE (PAGE_SIZE << SKB_FRAG_PAGE_ORDER)
-
struct ip_esp_hdr;
static inline struct ip_esp_hdr *ip_esp_hdr(const struct sk_buff *skb)
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index a80fd0ac4..d5552ff1d 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -111,7 +111,8 @@ static inline struct inet_request_sock *inet_rsk(const struct request_sock *sk)
static inline u32 inet_request_mark(const struct sock *sk, struct sk_buff *skb)
{
- if (!sk->sk_mark && sock_net(sk)->ipv4.sysctl_tcp_fwmark_accept)
+ if (!sk->sk_mark &&
+ READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_fwmark_accept))
return skb->mark;
return sk->sk_mark;
@@ -357,7 +358,7 @@ static inline bool inet_get_convert_csum(struct sock *sk)
static inline bool inet_can_nonlocal_bind(struct net *net,
struct inet_sock *inet)
{
- return net->ipv4.sysctl_ip_nonlocal_bind ||
+ return READ_ONCE(net->ipv4.sysctl_ip_nonlocal_bind) ||
inet->freebind || inet->transparent;
}
diff --git a/include/net/ip.h b/include/net/ip.h
index d1a4efedb..0f820e68b 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -341,7 +341,7 @@ void ipfrag_init(void);
void ip_static_sysctl_init(void);
#define IP4_REPLY_MARK(net, mark) \
- ((net)->ipv4.sysctl_fwmark_reflect ? (mark) : 0)
+ (READ_ONCE((net)->ipv4.sysctl_fwmark_reflect) ? (mark) : 0)
static inline bool ip_is_fragment(const struct iphdr *iph)
{
@@ -402,7 +402,7 @@ static inline unsigned int ip_dst_mtu_maybe_forward(const struct dst_entry *dst,
struct net *net = dev_net(dst->dev);
unsigned int mtu;
- if (net->ipv4.sysctl_ip_fwd_use_pmtu ||
+ if (READ_ONCE(net->ipv4.sysctl_ip_fwd_use_pmtu) ||
ip_mtu_locked(dst) ||
!forwarding)
return dst_mtu(dst);
diff --git a/include/net/sock.h b/include/net/sock.h
index 7d3a4c2ee..98946f907 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1381,7 +1381,7 @@ void __sk_mem_reclaim(struct sock *sk, int amount);
/* sysctl_mem values are in pages, we convert them in SK_MEM_QUANTUM units */
static inline long sk_prot_mem_limits(const struct sock *sk, int index)
{
- long val = sk->sk_prot->sysctl_mem[index];
+ long val = READ_ONCE(sk->sk_prot->sysctl_mem[index]);
#if PAGE_SIZE > SK_MEM_QUANTUM
val <<= PAGE_SHIFT - SK_MEM_QUANTUM_SHIFT;
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 5c5807ed6..436ad4bc9 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1339,8 +1339,8 @@ static inline void tcp_slow_start_after_idle_check(struct sock *sk)
struct tcp_sock *tp = tcp_sk(sk);
s32 delta;
- if (!sock_net(sk)->ipv4.sysctl_tcp_slow_start_after_idle || tp->packets_out ||
- ca_ops->cong_control)
+ if (!READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_slow_start_after_idle) ||
+ tp->packets_out || ca_ops->cong_control)
return;
delta = tcp_jiffies32 - tp->lsndtime;
if (delta > inet_csk(sk)->icsk_rto)
@@ -1355,7 +1355,7 @@ void tcp_select_initial_window(const struct sock *sk, int __space,
static inline int tcp_win_from_space(const struct sock *sk, int space)
{
- int tcp_adv_win_scale = sock_net(sk)->ipv4.sysctl_tcp_adv_win_scale;
+ int tcp_adv_win_scale = READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_adv_win_scale);
return tcp_adv_win_scale <= 0 ?
(space>>(-tcp_adv_win_scale)) :
@@ -1430,7 +1430,8 @@ static inline u32 keepalive_time_elapsed(const struct tcp_sock *tp)
static inline int tcp_fin_time(const struct sock *sk)
{
- int fin_timeout = tcp_sk(sk)->linger2 ? : sock_net(sk)->ipv4.sysctl_tcp_fin_timeout;
+ int fin_timeout = tcp_sk(sk)->linger2 ? :
+ READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_fin_timeout);
const int rto = inet_csk(sk)->icsk_rto;
if (fin_timeout < (rto << 2) - (rto >> 1))
@@ -1875,7 +1876,7 @@ void __tcp_v4_send_check(struct sk_buff *skb, __be32 saddr, __be32 daddr);
static inline u32 tcp_notsent_lowat(const struct tcp_sock *tp)
{
struct net *net = sock_net((struct sock *)tp);
- return tp->notsent_lowat ?: net->ipv4.sysctl_tcp_notsent_lowat;
+ return tp->notsent_lowat ?: READ_ONCE(net->ipv4.sysctl_tcp_notsent_lowat);
}
static inline bool tcp_stream_memory_free(const struct sock *sk)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 07:56:40 +0000