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authorHenrik Bjoernlund <henrik.bjoernlund@microchip.com>2020-10-27 13:02:42 +0300
committerJakub Kicinski <kuba@kernel.org>2020-10-30 04:39:43 +0300
commit90c628dd47ff4178f645b34938470bf43d02d123 (patch)
tree80bf540861d85c147f34e617b2e1499c2a7ea934 /net/bridge/br_input.c
parentae8a6e6e881880012705ae114a180592b88b3cfb (diff)
downloadlinux-90c628dd47ff4178f645b34938470bf43d02d123.tar.xz
net: bridge: extend the process of special frames
This patch extends the processing of frames in the bridge. Currently MRP frames needs special processing and the current implementation doesn't allow a nice way to process different frame types. Therefore try to improve this by adding a list that contains frame types that need special processing. This list is iterated for each input frame and if there is a match based on frame type then these functions will be called and decide what to do with the frame. It can process the frame then the bridge doesn't need to do anything or don't process so then the bridge will do normal forwarding. Signed-off-by: Henrik Bjoernlund <henrik.bjoernlund@microchip.com> Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com> Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/bridge/br_input.c')
-rw-r--r--net/bridge/br_input.c33
1 files changed, 32 insertions, 1 deletions
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 59a318b9f646..bece03bf83c4 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -254,6 +254,21 @@ frame_finish:
return RX_HANDLER_CONSUMED;
}
+/* Return 0 if the frame was not processed otherwise 1
+ * note: already called with rcu_read_lock
+ */
+static int br_process_frame_type(struct net_bridge_port *p,
+ struct sk_buff *skb)
+{
+ struct br_frame_type *tmp;
+
+ hlist_for_each_entry_rcu(tmp, &p->br->frame_type_list, list)
+ if (unlikely(tmp->type == skb->protocol))
+ return tmp->frame_handler(p, skb);
+
+ return 0;
+}
+
/*
* Return NULL if skb is handled
* note: already called with rcu_read_lock
@@ -343,7 +358,7 @@ static rx_handler_result_t br_handle_frame(struct sk_buff **pskb)
}
}
- if (unlikely(br_mrp_process(p, skb)))
+ if (unlikely(br_process_frame_type(p, skb)))
return RX_HANDLER_PASS;
forward:
@@ -380,3 +395,19 @@ rx_handler_func_t *br_get_rx_handler(const struct net_device *dev)
return br_handle_frame;
}
+
+void br_add_frame(struct net_bridge *br, struct br_frame_type *ft)
+{
+ hlist_add_head_rcu(&ft->list, &br->frame_type_list);
+}
+
+void br_del_frame(struct net_bridge *br, struct br_frame_type *ft)
+{
+ struct br_frame_type *tmp;
+
+ hlist_for_each_entry(tmp, &br->frame_type_list, list)
+ if (ft == tmp) {
+ hlist_del_rcu(&ft->list);
+ return;
+ }
+}