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ANDROID: GKI: net: add vendor hooks net qos for gki purpose

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Add vendor hooks to support net qos policy feature:

1.android_rvh_tcp_rcv_spurious_retrans
With this hook we could trace the ACK path through the segments which
are spuriously retransmitted by sender.

Bug: 351960112
Bug: 356582738
Bug: 356617512
Bug: 422600631

Change-Id: I739cef428f4a43999d99393a205b3d53a1eb52da
Signed-off-by: Jyu Jiang <jyu.jiang@vivo.corp-partner.google.com>
This commit is contained in:
Jyu Jiang
2024-07-10 11:13:49 +08:00
committed by Treehugger Robot
parent 54f2463845
commit 6c1c18fcb8
3 changed files with 5 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@@ -312,6 +312,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_tcp_select_window);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_inet_sock_create);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_inet_sock_release);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_bpf_skb_load_bytes);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_tcp_rcv_spurious_retrans);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_tcp_rtt_estimator);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_udp_enqueue_schedule_skb);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_build_skb_around);

2
include/trace/hooks/net.h
View File

@@ -123,6 +123,8 @@ DECLARE_RESTRICTED_HOOK(android_rvh_bpf_skb_load_bytes,
TP_PROTO(const struct sk_buff *skb, u32 offset, void *to, u32 len,
int *handled, int *err),
TP_ARGS(skb, offset, to, len, handled, err), 1);
DECLARE_RESTRICTED_HOOK(android_rvh_tcp_rcv_spurious_retrans,
TP_PROTO(struct sock *sk), TP_ARGS(sk), 1);
DECLARE_HOOK(android_vh_tcp_rtt_estimator,
TP_PROTO(struct sock *sk, long mrtt_us), TP_ARGS(sk, mrtt_us));
DECLARE_HOOK(android_vh_udp_enqueue_schedule_skb,

2
net/ipv4/tcp_input.c
View File

@@ -4700,6 +4700,8 @@ static void tcp_rcv_spurious_retrans(struct sock *sk, const struct sk_buff *skb)
* repathing due to our own RTO, then rehash the socket to repath our
* packets.
*/
trace_android_rvh_tcp_rcv_spurious_retrans(sk);
#if IS_ENABLED(CONFIG_IPV6)
if (inet_csk(sk)->icsk_ca_state != TCP_CA_Loss &&
skb->protocol == htons(ETH_P_IPV6) &&