Update snd_una description to make it more readable.

Differential Revision:	https://reviews.freebsd.org/D3179
Reviewed by:		gnn
Sponsored by:		Limelight Networks

diff --git a/sys/netinet/tcp_var.h b/sys/netinet/tcp_var.h
index e8b6670cebb65e5fb81891f9d76c0a27dc561e43..d16f27b0f379fedc40ce1c877909b91fb514af26 100644 (file)
--- a/sys/netinet/tcp_var.h
+++ b/sys/netinet/tcp_var.h
@@ -113,7 +113,7 @@ struct tcpcb {
 
        struct  vnet *t_vnet;           /* back pointer to parent vnet */
 
-       tcp_seq snd_una;                /* send unacknowledged */
+       tcp_seq snd_una;                /* sent but unacknowledged */
        tcp_seq snd_max;                /* highest sequence number sent;
                                         * used to recognize retransmits
                                         */