From: Nikolay Aleksandrov <nikolay@nvidia.com>
Date: Sat, 28 Aug 2021 11:07:51 +0000 (+0300)
Subject: bridge: vlan: add support for vlan filtering when dumping options
X-Git-Tag: v5.16.0~46^2~14
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ecf6d8b4a1c5532040943620ec035aeec63c3e15;p=thirdparty%2Fiproute2.git

bridge: vlan: add support for vlan filtering when dumping options

In order to allow vlan filtering when dumping options we need to move
all print operations into the option dumping functions and add the
filtering after we've parsed the nested attributes so we can extract the
start and end vlan ids.

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
---

diff --git a/bridge/vlan.c b/bridge/vlan.c
index 8a2cc306c..77db90d8a 100644
--- a/bridge/vlan.c
+++ b/bridge/vlan.c
@@ -622,7 +622,7 @@ static int print_vlan_stats(struct nlmsghdr *n, void *arg)
 	return 0;
 }
 
-static void print_vlan_global_opts(struct rtattr *a)
+static void print_vlan_global_opts(struct rtattr *a, int ifindex)
 {
 	struct rtattr *vtb[BRIDGE_VLANDB_GOPTS_MAX + 1];
 	__u16 vid, vrange = 0;
@@ -637,11 +637,24 @@ static void print_vlan_global_opts(struct rtattr *a)
 		vrange = rta_getattr_u16(vtb[BRIDGE_VLANDB_GOPTS_RANGE]);
 	else
 		vrange = vid;
+
+	if (filter_vlan && (filter_vlan < vid || filter_vlan > vrange))
+		return;
+
+	if (vlan_rtm_cur_ifidx != ifindex) {
+		open_vlan_port(ifindex, VLAN_SHOW_VLAN);
+		open_json_object(NULL);
+		vlan_rtm_cur_ifidx = ifindex;
+	} else {
+		open_json_object(NULL);
+		print_string(PRINT_FP, NULL, "%-" __stringify(IFNAMSIZ) "s  ", "");
+	}
 	print_range("vlan", vid, vrange);
 	print_nl();
+	close_json_object();
 }
 
-static void print_vlan_opts(struct rtattr *a)
+static void print_vlan_opts(struct rtattr *a, int ifindex)
 {
 	struct rtattr *vtb[BRIDGE_VLANDB_ENTRY_MAX + 1];
 	struct bridge_vlan_xstats vstats;
@@ -662,6 +675,9 @@ static void print_vlan_opts(struct rtattr *a)
 	else
 		vrange = vinfo->vid;
 
+	if (filter_vlan && (filter_vlan < vinfo->vid || filter_vlan > vrange))
+		return;
+
 	if (vtb[BRIDGE_VLANDB_ENTRY_STATE])
 		state = rta_getattr_u8(vtb[BRIDGE_VLANDB_ENTRY_STATE]);
 
@@ -690,6 +706,15 @@ static void print_vlan_opts(struct rtattr *a)
 			vstats.tx_bytes = rta_getattr_u64(attr);
 		}
 	}
+
+	if (vlan_rtm_cur_ifidx != ifindex) {
+		open_vlan_port(ifindex, VLAN_SHOW_VLAN);
+		open_json_object(NULL);
+		vlan_rtm_cur_ifidx = ifindex;
+	} else {
+		open_json_object(NULL);
+		print_string(PRINT_FP, NULL, "%-" __stringify(IFNAMSIZ) "s  ", "");
+	}
 	print_range("vlan", vinfo->vid, vrange);
 	print_vlan_flags(vinfo->flags);
 	print_nl();
@@ -698,6 +723,7 @@ static void print_vlan_opts(struct rtattr *a)
 	print_nl();
 	if (show_stats)
 		__print_one_vlan_stats(&vstats);
+	close_json_object();
 }
 
 int print_vlan_rtm(struct nlmsghdr *n, void *arg, bool monitor, bool global_only)
@@ -746,23 +772,14 @@ int print_vlan_rtm(struct nlmsghdr *n, void *arg, bool monitor, bool global_only
 		    (global_only && rta_type != BRIDGE_VLANDB_GLOBAL_OPTIONS))
 			continue;
 
-		if (vlan_rtm_cur_ifidx != bvm->ifindex) {
-			open_vlan_port(bvm->ifindex, VLAN_SHOW_VLAN);
-			open_json_object(NULL);
-			vlan_rtm_cur_ifidx = bvm->ifindex;
-		} else {
-			open_json_object(NULL);
-			print_string(PRINT_FP, NULL, "%-" __stringify(IFNAMSIZ) "s  ", "");
-		}
 		switch (rta_type) {
 		case BRIDGE_VLANDB_ENTRY:
-			print_vlan_opts(a);
+			print_vlan_opts(a, bvm->ifindex);
 			break;
 		case BRIDGE_VLANDB_GLOBAL_OPTIONS:
-			print_vlan_global_opts(a);
+			print_vlan_global_opts(a, bvm->ifindex);
 			break;
 		}
-		close_json_object();
 	}
 
 	return 0;