o add a flags parameter to netisr_register that is used to specify

  whether or not the isr needs to hold Giant when running; Giant-less
  operation is also controlled by the setting of debug_mpsafenet
o mark all netisr's except NETISR_IP as needing Giant
o add a GIANT_REQUIRED assertion to the top of netisr's that need Giant
o pickup Giant (when debug_mpsafenet is 1) inside ip_input before
  calling up with a packet
o change netisr handling so swi_net runs w/o Giant; instead we grab
  Giant before invoking handlers based on whether the handler needs Giant
o change netisr handling so that netisr's that are marked MPSAFE may
  have multiple instances active at a time
o add netisr statistics for packets dropped because the isr is inactive

Supported by:	FreeBSD Foundation

1 files changed, 3 insertions, 1 deletions

diff --git a/sys/netipx/ipx_input.c b/sys/netipx/ipx_input.c
index d62c95f..a511a4f 100644
--- a/sys/netipx/ipx_input.c
+++ b/sys/netipx/ipx_input.c
@@ -119,7 +119,7 @@ ipx_init()
 
 	ipxintrq.ifq_maxlen = ipxqmaxlen;
 	mtx_init(&ipxintrq.ifq_mtx, "ipx_inq", NULL, MTX_DEF);
-	netisr_register(NETISR_IPX, ipxintr, &ipxintrq);
+	netisr_register(NETISR_IPX, ipxintr, &ipxintrq, 0);
 }
 
 /*
@@ -133,6 +133,8 @@ ipxintr(struct mbuf *m)
 	struct ipx_ifaddr *ia;
 	int len;
 
+	GIANT_REQUIRED;
+
 	/*
 	 * If no IPX addresses have been set yet but the interfaces
 	 * are receiving, can't do anything with incoming packets yet.