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authorPhilip Kirk <Phil.Kirk@Sun.COM>2009-06-15 05:57:03 -0400
committerPhilip Kirk <Phil.Kirk@Sun.COM>2009-06-15 05:57:03 -0400
commit410734d49da2a410ec87758533a8f01c75aa0bd8 (patch)
treec7d458af0dc4054b456e3dd858a9df02e35218c8 /usr/src/uts/common/inet/tcp.h
parent4bc40f6908f439ff427ce56daad14366e8a63f7c (diff)
downloadillumos-joyent-410734d49da2a410ec87758533a8f01c75aa0bd8.tar.gz
6485039 TCP needs to perform shrunk window functionality robustly.
Diffstat (limited to 'usr/src/uts/common/inet/tcp.h')
-rw-r--r--usr/src/uts/common/inet/tcp.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/usr/src/uts/common/inet/tcp.h b/usr/src/uts/common/inet/tcp.h
index 1d10a8cbfa..74ffce34f4 100644
--- a/usr/src/uts/common/inet/tcp.h
+++ b/usr/src/uts/common/inet/tcp.h
@@ -292,7 +292,8 @@ typedef struct tcp_s {
tcp_tconnind_started : 1, /* conn_ind message is being sent */
tcp_lso :1, /* Lower layer is capable of LSO */
tcp_refuse :1, /* Connection needs refusing */
- tcp_pad_to_bit_31 : 16;
+ tcp_is_wnd_shrnk : 1, /* Window has shrunk */
+ tcp_pad_to_bit_31 : 15;
uint32_t tcp_if_mtu; /* Outgoing interface MTU. */
@@ -602,6 +603,11 @@ typedef struct tcp_s {
boolean_t tcp_flow_stopped;
/*
+ * Sender's next sequence number at the time the window was shrunk.
+ */
+ uint32_t tcp_snxt_shrunk;
+
+ /*
* The socket generation number is bumped when an outgoing connection
* attempts is made, and it sent up to the socket when the
* connection was successfully established, or an error occured. The