return of the accept filter part II

accept filters are now loadable as well as able to be compiled into
the kernel.

two accept filters are provided, one that returns sockets when data
arrives the other when an http request is completed (doesn't work
with 0.9 requests)

Reviewed by: jmg

1 files changed, 11 insertions, 0 deletions

diff --git a/sys/kern/uipc_sockbuf.c b/sys/kern/uipc_sockbuf.c
index 1026672..42e02a5 100644
--- a/sys/kern/uipc_sockbuf.c
+++ b/sys/kern/uipc_sockbuf.c
@@ -107,10 +107,21 @@ soisconnected(so)
 	struct socket *so;
 {
 	struct socket *head = so->so_head;
+	int	s;
 
 	so->so_state &= ~(SS_ISCONNECTING|SS_ISDISCONNECTING|SS_ISCONFIRMING);
 	so->so_state |= SS_ISCONNECTED;
 	if (head && (so->so_state & SS_INCOMP)) {
+		if ((so->so_options & SO_ACCEPTFILTER) != 0) {
+			s = splnet();
+			so->so_upcall = head->so_accf->so_accept_filter->accf_callback;
+			so->so_upcallarg = head->so_accf->so_accept_filter_arg;
+			so->so_rcv.sb_flags |= SB_UPCALL;
+			so->so_options &= ~SO_ACCEPTFILTER;
+			splx(s);
+			so->so_upcall(so, so->so_upcallarg, 0);
+			return;
+		}
 		TAILQ_REMOVE(&head->so_incomp, so, so_list);
 		head->so_incqlen--;
 		so->so_state &= ~SS_INCOMP;