Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index fa2ae96..4ef0807 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -237,11 +237,8 @@
int retry_until;
if ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) {
- if (icsk->icsk_retransmits) {
- dst_negative_advice(sk);
- } else {
- sk_rethink_txhash(sk);
- }
+ if (icsk->icsk_retransmits)
+ __dst_negative_advice(sk);
retry_until = icsk->icsk_syn_retries ? : net->ipv4.sysctl_tcp_syn_retries;
expired = icsk->icsk_retransmits >= retry_until;
} else {
@@ -249,9 +246,7 @@
/* Black hole detection */
tcp_mtu_probing(icsk, sk);
- dst_negative_advice(sk);
- } else {
- sk_rethink_txhash(sk);
+ __dst_negative_advice(sk);
}
retry_until = net->ipv4.sysctl_tcp_retries2;
@@ -282,6 +277,11 @@
return 1;
}
+ if (sk_rethink_txhash(sk)) {
+ tp->timeout_rehash++;
+ __NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPTIMEOUTREHASH);
+ }
+
return 0;
}
@@ -326,7 +326,7 @@
/**
* tcp_delack_timer() - The TCP delayed ACK timeout handler
- * @data: Pointer to the current socket. (gets casted to struct sock *)
+ * @t: Pointer to the timer. (gets casted to struct sock *)
*
* This function gets (indirectly) called when the kernel timer for a TCP packet
* of this socket expires. Calls tcp_delack_timer_handler() to do the actual work.
@@ -343,7 +343,6 @@
if (!sock_owned_by_user(sk)) {
tcp_delack_timer_handler(sk);
} else {
- icsk->icsk_ack.blocked = 1;
__NET_INC_STATS(sock_net(sk), LINUX_MIB_DELAYEDACKLOCKED);
/* deleguate our work to tcp_release_cb() */
if (!test_and_set_bit(TCP_DELACK_TIMER_DEFERRED, &sk->sk_tsq_flags))
@@ -452,6 +451,7 @@
struct net *net = sock_net(sk);
struct inet_connection_sock *icsk = inet_csk(sk);
struct request_sock *req;
+ struct sk_buff *skb;
req = rcu_dereference_protected(tp->fastopen_rsk,
lockdep_sock_is_held(sk));
@@ -464,7 +464,12 @@
*/
return;
}
- if (!tp->packets_out || WARN_ON_ONCE(tcp_rtx_queue_empty(sk)))
+
+ if (!tp->packets_out)
+ return;
+
+ skb = tcp_rtx_queue_head(sk);
+ if (WARN_ON_ONCE(!skb))
return;
tp->tlp_high_seq = 0;
@@ -498,7 +503,7 @@
goto out;
}
tcp_enter_loss(sk);
- tcp_retransmit_skb(sk, tcp_rtx_queue_head(sk), 1);
+ tcp_retransmit_skb(sk, skb, 1);
__sk_dst_reset(sk);
goto out_reset_timer;
}
@@ -759,8 +764,14 @@
bh_lock_sock(sk);
if (!sock_owned_by_user(sk)) {
- if (tp->compressed_ack > TCP_FASTRETRANS_THRESH)
+ if (tp->compressed_ack) {
+ /* Since we have to send one ack finally,
+ * substract one from tp->compressed_ack to keep
+ * LINUX_MIB_TCPACKCOMPRESSED accurate.
+ */
+ tp->compressed_ack--;
tcp_send_ack(sk);
+ }
} else {
if (!test_and_set_bit(TCP_DELACK_TIMER_DEFERRED,
&sk->sk_tsq_flags))