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authorVladimir Kropylev <vladimir.kropylev@enea.com>2019-06-25 00:06:52 +0300
committerFlorin Coras <florin.coras@gmail.com>2019-06-25 21:51:42 +0000
commit398afbd889f7751088b9e4bfc487b221719b80a5 (patch)
tree5e010739d0ad363b1a0e082a663e94aea949487d /src/vnet/tcp/tcp.h
parent217c62a53e5621bb8790a242a57dc7e9f8eef3a8 (diff)
tcp: window update ack
Type: feature Provide interface for sending Window Update ACK, ensuring it will be sent only once, if RWND became non-zero, after zero RWND has been advertised before. Change-Id: I7f0d8af76d7763208625df68ab4ac3727fdaf449 Signed-off-by: Vladimir Kropylev <vladimir.kropylev@enea.com>
Diffstat (limited to 'src/vnet/tcp/tcp.h')
-rw-r--r--src/vnet/tcp/tcp.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index b0c3ecc8c15..e4980dd64eb 100644
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -130,6 +130,7 @@ extern timer_expiration_handler tcp_timer_retransmit_syn_handler;
_(FINRCVD, "FIN received") \
_(RATE_SAMPLE, "Conn does rate sampling") \
_(TRACK_BURST, "Track burst") \
+ _(ZERO_RWND_SENT, "Zero RWND sent") \
typedef enum _tcp_connection_flag_bits
{
@@ -412,6 +413,10 @@ tcp_cong_recovery_off (tcp_connection_t * tc)
tcp_fastrecovery_first_off (tc);
}
+#define tcp_zero_rwnd_sent(tc) (tc)->flags &= TCP_CONN_ZERO_RWND_SENT
+#define tcp_zero_rwnd_sent_on(tc) (tc)->flags |= TCP_CONN_ZERO_RWND_SENT
+#define tcp_zero_rwnd_sent_off(tc) (tc)->flags &= ~TCP_CONN_ZERO_RWND_SENT
+
typedef enum _tcp_error
{
#define tcp_error(n,s) TCP_ERROR_##n,
@@ -682,6 +687,7 @@ void tcp_do_fastretransmits (tcp_worker_ctx_t * wrk);
void tcp_program_ack (tcp_worker_ctx_t * wrk, tcp_connection_t * tc);
void tcp_program_dupack (tcp_worker_ctx_t * wrk, tcp_connection_t * tc);
void tcp_send_acks (tcp_worker_ctx_t * wrk);
+void tcp_send_window_update_ack (tcp_connection_t * tc);
/*
* Rate estimation