From 28984c8584d2c96a9beb2dcebef2985bc041ca7b Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Sat, 25 Jul 2015 01:55:22 +0200
Subject: device: use general lock for port lists

* device/if_hdr.h (struct ifnet): Turn the port list locks into
general locks.
(port_list_{lock_init,lock,unlock): New macros.
* device/net_io.c (net_filter, net_set_filter): Use new macros.
* device/subrs.c (if_init_queues): Likewise.
---
 device/net_io.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

(limited to 'device/net_io.c')

diff --git a/device/net_io.c b/device/net_io.c
index 47ef2ea..12a1e9c 100644
--- a/device/net_io.c
+++ b/device/net_io.c
@@ -722,8 +722,8 @@ net_filter(kmsg, send_list)
 	 * Both locks are hold in case a filter is removed from both
 	 * queues.
 	 */
-	simple_lock(&ifp->if_rcv_port_list_lock);
-	simple_lock(&ifp->if_snd_port_list_lock);
+	port_list_lock(&ifp->if_rcv_port_list_lock);
+	port_list_lock(&ifp->if_snd_port_list_lock);
 	FILTER_ITERATE(if_port_list, infp, nextfp,
 		       net_kmsg(kmsg)->sent ? &infp->output : &infp->input)
 	{
@@ -853,8 +853,8 @@ net_filter(kmsg, send_list)
 	    }
 	}
 	FILTER_ITERATE_END
-	simple_unlock(&ifp->if_snd_port_list_lock);
-	simple_unlock(&ifp->if_rcv_port_list_lock);
+	port_list_unlock(&ifp->if_snd_port_list_lock);
+	port_list_unlock(&ifp->if_rcv_port_list_lock);
 
 	/*
 	 * Deallocate dead filters.
@@ -1255,8 +1255,8 @@ net_set_filter(
     in = (filter[0] & NETF_IN) != 0;
     out = (filter[0] & NETF_OUT) != 0;
 
-    simple_lock(&ifp->if_rcv_port_list_lock);
-    simple_lock(&ifp->if_snd_port_list_lock);
+    port_list_lock(&ifp->if_rcv_port_list_lock);
+    port_list_lock(&ifp->if_snd_port_list_lock);
 
     if (in)
 	check_filter_list(&ifp->if_rcv_port_list);
@@ -1272,8 +1272,8 @@ net_set_filter(
 	}
 	if (i == N_NET_HASH) {
 	    simple_unlock(&net_hash_header_lock);
-	    simple_unlock(&ifp->if_snd_port_list_lock);
-	    simple_unlock(&ifp->if_rcv_port_list_lock);
+	    port_list_unlock(&ifp->if_snd_port_list_lock);
+	    port_list_unlock(&ifp->if_rcv_port_list_lock);
 
             ipc_port_release_send(rcv_port);
 	    if (match != 0)
@@ -1352,8 +1352,8 @@ net_set_filter(
 	hash_entp->rcv_qlimit = net_add_q_info(rcv_port);
     }
     
-    simple_unlock(&ifp->if_snd_port_list_lock);
-    simple_unlock(&ifp->if_rcv_port_list_lock);
+    port_list_unlock(&ifp->if_snd_port_list_lock);
+    port_list_unlock(&ifp->if_rcv_port_list_lock);
 
 clean_and_return:
     /* No locks are held at this point. */
-- 
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