tcp: make tcp_lro_flush() static

tcp_lro_flush() is not used anymore outside of tcp_lro.c. Therefore
make it static.

Reviewed by:		rscheff, glebius, Peter Lei
Sponsored by:		Netflix, Inc.
Differential Revision:	https://reviews.freebsd.org/D46435

sys/netinet/tcp_lro.c

@@ -83,6 +83,7 @@ static MALLOC_DEFINE(M_LRO, "LRO", "LRO control structures");
 static void	tcp_lro_rx_done(struct lro_ctrl *lc);
 static int	tcp_lro_rx_common(struct lro_ctrl *lc, struct mbuf *m,
 		    uint32_t csum, bool use_hash);
+static void	tcp_lro_flush(struct lro_ctrl *lc, struct lro_entry *le);
 
 SYSCTL_NODE(_net_inet_tcp, OID_AUTO, lro,  CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
     "TCP LRO");
@@ -1104,7 +1105,7 @@ tcp_lro_condense(struct lro_ctrl *lc, struct lro_entry *le)
 	}
 }
 
-void
+static void
 tcp_lro_flush(struct lro_ctrl *lc, struct lro_entry *le)
 {
 

sys/netinet/tcp_lro.h

@@ -216,7 +216,6 @@ int tcp_lro_init(struct lro_ctrl *);
 int tcp_lro_init_args(struct lro_ctrl *, struct ifnet *, unsigned, unsigned);
 void tcp_lro_free(struct lro_ctrl *);
 void tcp_lro_flush_inactive(struct lro_ctrl *, const struct timeval *);
-void tcp_lro_flush(struct lro_ctrl *, struct lro_entry *);
 void tcp_lro_flush_all(struct lro_ctrl *);
 extern int (*tcp_lro_flush_tcphpts)(struct lro_ctrl *, struct lro_entry *);
 int tcp_lro_rx(struct lro_ctrl *, struct mbuf *, uint32_t);