From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/net/ipv4/tcp_recovery.c | 27 ++++++++-------------------
1 files changed, 8 insertions(+), 19 deletions(-)
diff --git a/kernel/net/ipv4/tcp_recovery.c b/kernel/net/ipv4/tcp_recovery.c
index 0d96dec..21fc985 100644
--- a/kernel/net/ipv4/tcp_recovery.c
+++ b/kernel/net/ipv4/tcp_recovery.c
@@ -2,20 +2,6 @@
#include <linux/tcp.h>
#include <net/tcp.h>
-void tcp_mark_skb_lost(struct sock *sk, struct sk_buff *skb)
-{
- struct tcp_sock *tp = tcp_sk(sk);
-
- tcp_skb_mark_lost_uncond_verify(tp, skb);
- if (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_RETRANS) {
- /* Account for retransmits that are lost again */
- TCP_SKB_CB(skb)->sacked &= ~TCPCB_SACKED_RETRANS;
- tp->retrans_out -= tcp_skb_pcount(skb);
- NET_ADD_STATS(sock_net(sk), LINUX_MIB_TCPLOSTRETRANSMIT,
- tcp_skb_pcount(skb));
- }
-}
-
static bool tcp_rack_sent_after(u64 t1, u64 t2, u32 seq1, u32 seq2)
{
return t1 > t2 || (t1 == t2 && after(seq1, seq2));
@@ -33,7 +19,8 @@
return 0;
if (tp->sacked_out >= tp->reordering &&
- !(sock_net(sk)->ipv4.sysctl_tcp_recovery & TCP_RACK_NO_DUPTHRESH))
+ !(READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_recovery) &
+ TCP_RACK_NO_DUPTHRESH))
return 0;
}
@@ -50,7 +37,7 @@
s32 tcp_rack_skb_timeout(struct tcp_sock *tp, struct sk_buff *skb, u32 reo_wnd)
{
return tp->rack.rtt_us + reo_wnd -
- tcp_stamp_us_delta(tp->tcp_mstamp, skb->skb_mstamp);
+ tcp_stamp_us_delta(tp->tcp_mstamp, tcp_skb_timestamp_us(skb));
}
/* RACK loss detection (IETF draft draft-ietf-tcpm-rack-01):
@@ -91,7 +78,8 @@
!(scb->sacked & TCPCB_SACKED_RETRANS))
continue;
- if (!tcp_rack_sent_after(tp->rack.mstamp, skb->skb_mstamp,
+ if (!tcp_rack_sent_after(tp->rack.mstamp,
+ tcp_skb_timestamp_us(skb),
tp->rack.end_seq, scb->end_seq))
break;
@@ -203,7 +191,8 @@
{
struct tcp_sock *tp = tcp_sk(sk);
- if (sock_net(sk)->ipv4.sysctl_tcp_recovery & TCP_RACK_STATIC_REO_WND ||
+ if ((READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_recovery) &
+ TCP_RACK_STATIC_REO_WND) ||
!rs->prior_delivered)
return;
@@ -246,6 +235,6 @@
tcp_fragment(sk, TCP_FRAG_IN_RTX_QUEUE, skb,
mss, mss, GFP_ATOMIC);
- tcp_skb_mark_lost_uncond_verify(tp, skb);
+ tcp_mark_skb_lost(sk, skb);
}
}
--
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