ANDROID: GKI: net: add vendor hooks net qos for gki purpose 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>
diff --git a/drivers/android/vendor_hooks.c b/drivers/android/vendor_hooks.c index 2e785dc..e574f96 100644 --- a/drivers/android/vendor_hooks.c +++ b/drivers/android/vendor_hooks.c
@@ -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);
diff --git a/include/trace/hooks/net.h b/include/trace/hooks/net.h index 54e1dca..b608745 100644 --- a/include/trace/hooks/net.h +++ b/include/trace/hooks/net.h
@@ -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,
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 65b3586..3da69dc 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c
@@ -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) &&