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Message-Id: <20180220192408.19763-4-stephen@networkplumber.org>
Date: Tue, 20 Feb 2018 11:24:06 -0800
From: Stephen Hemminger <stephen@...workplumber.org>
To: netdev@...r.kernel.org
Cc: Stephen Hemminger <sthemmin@...rosoft.com>,
Stephen Hemminger <stephen@...workplumber.org>
Subject: [PATCH v2 iproute2-next 3/5] bridge: add json support for link command
From: Stephen Hemminger <sthemmin@...rosoft.com>
Add json output for bridge link show command and reuse code
from ip command to display interface information.
This also changes the output format slightly for the non JSON case so
that it has same format as the ip link show command.
Signed-off-by: Stephen Hemminger <stephen@...workplumber.org>
---
bridge/link.c | 245 +++++++++++++++++++++++++++++++---------------------------
1 file changed, 132 insertions(+), 113 deletions(-)
diff --git a/bridge/link.c b/bridge/link.c
index 90c9734d9da1..e7ad5c61fa1e 100644
--- a/bridge/link.c
+++ b/bridge/link.c
@@ -12,6 +12,7 @@
#include <string.h>
#include <stdbool.h>
+#include "json_print.h"
#include "libnetlink.h"
#include "utils.h"
#include "br_common.h"
@@ -26,15 +27,21 @@ static const char *port_states[] = {
[BR_STATE_BLOCKING] = "blocking",
};
-static void print_link_flags(FILE *fp, unsigned int flags)
+static const char *hw_mode[] = {
+ "VEB", "VEPA"
+};
+
+static void print_link_flags(FILE *fp, unsigned int flags, unsigned int mdown)
{
- fprintf(fp, "<");
+ open_json_array(PRINT_ANY, is_json_context() ? "flags" : "<");
if (flags & IFF_UP && !(flags & IFF_RUNNING))
- fprintf(fp, "NO-CARRIER%s", flags ? "," : "");
+ print_string(PRINT_ANY, NULL,
+ flags ? "%s," : "%s", "NO-CARRIER");
flags &= ~IFF_RUNNING;
-#define _PF(f) if (flags&IFF_##f) { \
- flags &= ~IFF_##f ; \
- fprintf(fp, #f "%s", flags ? "," : ""); }
+
+#define _PF(f) if (flags&IFF_##f) { \
+ flags &= ~IFF_##f ; \
+ print_string(PRINT_ANY, NULL, flags ? "%s," : "%s", #f); }
_PF(LOOPBACK);
_PF(BROADCAST);
_PF(POINTOPOINT);
@@ -55,44 +62,119 @@ static void print_link_flags(FILE *fp, unsigned int flags)
_PF(ECHO);
#undef _PF
if (flags)
- fprintf(fp, "%x", flags);
- fprintf(fp, "> ");
+ print_hex(PRINT_ANY, NULL, "%x", flags);
+ if (mdown)
+ print_string(PRINT_ANY, NULL, ",%s", "M-DOWN");
+ close_json_array(PRINT_ANY, "> ");
}
-static const char *oper_states[] = {
- "UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN",
- "TESTING", "DORMANT", "UP"
-};
-
-static const char *hw_mode[] = {"VEB", "VEPA"};
+static void print_portstate(__u8 state)
+{
+ if (state <= BR_STATE_BLOCKING)
+ print_string(PRINT_ANY, "state",
+ "state %s ", port_states[state]);
+ else
+ print_uint(PRINT_ANY, "state",
+ "state (%d) ", state);
+}
-static void print_operstate(FILE *f, __u8 state)
+static void print_onoff(FILE *fp, const char *flag, __u8 val)
{
- if (state >= ARRAY_SIZE(oper_states))
- fprintf(f, "state %#x ", state);
+ if (is_json_context())
+ print_bool(PRINT_JSON, flag, NULL, val);
else
- fprintf(f, "state %s ", oper_states[state]);
+ fprintf(fp, "%s %s ", flag, val ? "on" : "off");
}
-static void print_portstate(FILE *f, __u8 state)
+static void print_hwmode(__u16 mode)
{
- if (state <= BR_STATE_BLOCKING)
- fprintf(f, "state %s ", port_states[state]);
+ if (mode >= ARRAY_SIZE(hw_mode))
+ print_0xhex(PRINT_ANY, "hwmode",
+ "hwmode %#hx ", mode);
else
- fprintf(f, "state (%d) ", state);
+ print_string(PRINT_ANY, "hwmode",
+ "hwmode %s ", hw_mode[mode]);
}
-static void print_onoff(FILE *f, char *flag, __u8 val)
+static void print_protinfo(FILE *fp, struct rtattr *attr)
{
- fprintf(f, "%s %s ", flag, val ? "on" : "off");
+ if (attr->rta_type & NLA_F_NESTED) {
+ struct rtattr *prtb[IFLA_BRPORT_MAX + 1];
+
+ parse_rtattr_nested(prtb, IFLA_BRPORT_MAX, attr);
+
+ if (prtb[IFLA_BRPORT_STATE])
+ print_portstate(rta_getattr_u8(prtb[IFLA_BRPORT_STATE]));
+
+ if (prtb[IFLA_BRPORT_PRIORITY])
+ print_uint(PRINT_ANY, "priority",
+ "priority %u ",
+ rta_getattr_u16(prtb[IFLA_BRPORT_PRIORITY]));
+
+ if (prtb[IFLA_BRPORT_COST])
+ print_uint(PRINT_ANY, "cost",
+ "cost %u ",
+ rta_getattr_u32(prtb[IFLA_BRPORT_COST]));
+
+ if (!show_details)
+ return;
+
+ if (!is_json_context())
+ fprintf(fp, "%s ", _SL_);
+
+ if (prtb[IFLA_BRPORT_MODE])
+ print_onoff(fp, "hairpin",
+ rta_getattr_u8(prtb[IFLA_BRPORT_MODE]));
+ if (prtb[IFLA_BRPORT_GUARD])
+ print_onoff(fp, "guard",
+ rta_getattr_u8(prtb[IFLA_BRPORT_GUARD]));
+ if (prtb[IFLA_BRPORT_PROTECT])
+ print_onoff(fp, "root_block",
+ rta_getattr_u8(prtb[IFLA_BRPORT_PROTECT]));
+ if (prtb[IFLA_BRPORT_FAST_LEAVE])
+ print_onoff(fp, "fastleave",
+ rta_getattr_u8(prtb[IFLA_BRPORT_FAST_LEAVE]));
+ if (prtb[IFLA_BRPORT_LEARNING])
+ print_onoff(fp, "learning",
+ rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING]));
+ if (prtb[IFLA_BRPORT_LEARNING_SYNC])
+ print_onoff(fp, "learning_sync",
+ rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING_SYNC]));
+ if (prtb[IFLA_BRPORT_UNICAST_FLOOD])
+ print_onoff(fp, "flood",
+ rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD]));
+ if (prtb[IFLA_BRPORT_MCAST_FLOOD])
+ print_onoff(fp, "mcast_flood",
+ rta_getattr_u8(prtb[IFLA_BRPORT_MCAST_FLOOD]));
+ if (prtb[IFLA_BRPORT_NEIGH_SUPPRESS])
+ print_onoff(fp, "neigh_suppress",
+ rta_getattr_u8(prtb[IFLA_BRPORT_NEIGH_SUPPRESS]));
+ if (prtb[IFLA_BRPORT_VLAN_TUNNEL])
+ print_onoff(fp, "vlan_tunnel",
+ rta_getattr_u8(prtb[IFLA_BRPORT_VLAN_TUNNEL]));
+ } else
+ print_portstate(rta_getattr_u8(attr));
}
-static void print_hwmode(FILE *f, __u16 mode)
+
+/*
+ * This is reported by HW devices that have some bridging
+ * capabilities.
+ */
+static void print_af_spec(FILE *fp, struct rtattr *attr)
{
- if (mode >= ARRAY_SIZE(hw_mode))
- fprintf(f, "hwmode %#hx ", mode);
- else
- fprintf(f, "hwmode %s ", hw_mode[mode]);
+ struct rtattr *aftb[IFLA_BRIDGE_MAX+1];
+
+ parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, attr);
+
+ if (aftb[IFLA_BRIDGE_MODE])
+ print_hwmode(rta_getattr_u16(aftb[IFLA_BRIDGE_MODE]));
+
+ if (!show_details)
+ return;
+
+ if (aftb[IFLA_BRIDGE_VLAN_INFO])
+ print_vlan_info(fp, aftb[IFLA_BRIDGE_VLAN_INFO]);
}
int print_linkinfo(const struct sockaddr_nl *who,
@@ -101,6 +183,7 @@ int print_linkinfo(const struct sockaddr_nl *who,
FILE *fp = arg;
struct ifinfomsg *ifi = NLMSG_DATA(n);
struct rtattr *tb[IFLA_MAX+1];
+ unsigned int m_flag = 0;
int len = n->nlmsg_len;
const char *name;
@@ -122,102 +205,34 @@ int print_linkinfo(const struct sockaddr_nl *who,
if (!name)
return -1;
+ open_json_object(NULL);
if (n->nlmsg_type == RTM_DELLINK)
- fprintf(fp, "Deleted ");
-
- fprintf(fp, "%d: ", ifi->ifi_index);
-
- print_name_and_link("%s: ", COLOR_NONE, name, tb);
+ print_bool(PRINT_ANY, "deleted", "Deleted ", true);
- if (tb[IFLA_OPERSTATE])
- print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));
-
- print_link_flags(fp, ifi->ifi_flags);
+ print_int(PRINT_ANY, "ifindex", "%d: ", ifi->ifi_index);
+ m_flag = print_name_and_link("%s: ", COLOR_IFNAME, name, tb);
+ print_link_flags(fp, ifi->ifi_flags, m_flag);
if (tb[IFLA_MTU])
- fprintf(fp, "mtu %u ", rta_getattr_u32(tb[IFLA_MTU]));
+ print_int(PRINT_ANY,
+ "mtu", "mtu %u ",
+ rta_getattr_u32(tb[IFLA_MTU]));
if (tb[IFLA_MASTER]) {
int master = rta_getattr_u32(tb[IFLA_MASTER]);
- fprintf(fp, "master %s ", ll_index_to_name(master));
+ print_string(PRINT_ANY, "master", "master %s ",
+ ll_index_to_name(master));
}
- if (tb[IFLA_PROTINFO]) {
- if (tb[IFLA_PROTINFO]->rta_type & NLA_F_NESTED) {
- struct rtattr *prtb[IFLA_BRPORT_MAX+1];
-
- parse_rtattr_nested(prtb, IFLA_BRPORT_MAX,
- tb[IFLA_PROTINFO]);
-
- if (prtb[IFLA_BRPORT_STATE])
- print_portstate(fp,
- rta_getattr_u8(prtb[IFLA_BRPORT_STATE]));
- if (prtb[IFLA_BRPORT_PRIORITY])
- fprintf(fp, "priority %hu ",
- rta_getattr_u16(prtb[IFLA_BRPORT_PRIORITY]));
- if (prtb[IFLA_BRPORT_COST])
- fprintf(fp, "cost %u ",
- rta_getattr_u32(prtb[IFLA_BRPORT_COST]));
-
- if (show_details) {
- fprintf(fp, "%s ", _SL_);
-
- if (prtb[IFLA_BRPORT_MODE])
- print_onoff(fp, "hairpin",
- rta_getattr_u8(prtb[IFLA_BRPORT_MODE]));
- if (prtb[IFLA_BRPORT_GUARD])
- print_onoff(fp, "guard",
- rta_getattr_u8(prtb[IFLA_BRPORT_GUARD]));
- if (prtb[IFLA_BRPORT_PROTECT])
- print_onoff(fp, "root_block",
- rta_getattr_u8(prtb[IFLA_BRPORT_PROTECT]));
- if (prtb[IFLA_BRPORT_FAST_LEAVE])
- print_onoff(fp, "fastleave",
- rta_getattr_u8(prtb[IFLA_BRPORT_FAST_LEAVE]));
- if (prtb[IFLA_BRPORT_LEARNING])
- print_onoff(fp, "learning",
- rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING]));
- if (prtb[IFLA_BRPORT_LEARNING_SYNC])
- print_onoff(fp, "learning_sync",
- rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING_SYNC]));
- if (prtb[IFLA_BRPORT_UNICAST_FLOOD])
- print_onoff(fp, "flood",
- rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD]));
- if (prtb[IFLA_BRPORT_MCAST_FLOOD])
- print_onoff(fp, "mcast_flood",
- rta_getattr_u8(prtb[IFLA_BRPORT_MCAST_FLOOD]));
- if (prtb[IFLA_BRPORT_NEIGH_SUPPRESS])
- print_onoff(fp, "neigh_suppress",
- rta_getattr_u8(prtb[IFLA_BRPORT_NEIGH_SUPPRESS]));
- if (prtb[IFLA_BRPORT_VLAN_TUNNEL])
- print_onoff(fp, "vlan_tunnel",
- rta_getattr_u8(prtb[IFLA_BRPORT_VLAN_TUNNEL]));
- }
- } else
- print_portstate(fp, rta_getattr_u8(tb[IFLA_PROTINFO]));
- }
+ if (tb[IFLA_PROTINFO])
+ print_protinfo(fp, tb[IFLA_PROTINFO]);
- if (tb[IFLA_AF_SPEC]) {
- /* This is reported by HW devices that have some bridging
- * capabilities.
- */
- struct rtattr *aftb[IFLA_BRIDGE_MAX+1];
-
- parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, tb[IFLA_AF_SPEC]);
-
- if (aftb[IFLA_BRIDGE_MODE])
- print_hwmode(fp, rta_getattr_u16(aftb[IFLA_BRIDGE_MODE]));
- if (show_details) {
- if (aftb[IFLA_BRIDGE_VLAN_INFO]) {
- fprintf(fp, "\n");
- print_vlan_info(fp, tb[IFLA_AF_SPEC],
- ifi->ifi_index);
- }
- }
- }
+ if (tb[IFLA_AF_SPEC])
+ print_af_spec(fp, tb[IFLA_AF_SPEC]);
- fprintf(fp, "\n");
+ print_string(PRINT_FP, NULL, "%s", "\n");
+ close_json_object();
fflush(fp);
return 0;
}
@@ -492,10 +507,14 @@ static int brlink_show(int argc, char **argv)
}
}
+ new_json_obj(json);
if (rtnl_dump_filter(&rth, print_linkinfo, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
+
+ delete_json_obj();
+ fflush(stdout);
return 0;
}
--
2.16.1
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