netdev - [PATCH iproute2-next v3 1/2] ipaddress: correctly print a VF hw address in the IPoIB case

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Date:   Sat, 22 Jun 2019 20:00:34 +0200
From:   Denis Kirjanov <kda@...ux-powerpc.org>
To:     stephen@...workplumber.org, dsahern@...il.com
Cc:     netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        dledford@...hat.com, mkubecek@...e.cz,
        Denis Kirjanov <kda@...ux-powerpc.org>
Subject: [PATCH iproute2-next v3 1/2] ipaddress: correctly print a VF hw address in the IPoIB case

Current code assumes that we print ethernet mac and
that doesn't work in the IPoIB case with SRIOV-enabled hardware

Before:
11: ib1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 2044 qdisc pfifo_fast
state UP mode DEFAULT group default qlen 256
        link/infiniband
80:00:00:66:fe:80:00:00:00:00:00:00:24:8a:07:03:00:a4:3e:7c brd
00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff
        vf 0 MAC 14:80:00:00:66:fe, spoof checking off, link-state disable,
    trust off, query_rss off
    ...

After:
11: ib1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 2044 qdisc pfifo_fast
state UP mode DEFAULT group default qlen 256
        link/infiniband
80:00:00:66:fe:80:00:00:00:00:00:00:24:8a:07:03:00:a4:3e:7c brd
00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff
        vf 0     link/infiniband
80:00:00:66:fe:80:00:00:00:00:00:00:24:8a:07:03:00:a4:3e:7c brd
00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff, spoof
checking off, link-state disable, trust off, query_rss off

v1->v2: updated kernel headers to uapi commit
v2->v3: fixed alignment

Signed-off-by: Denis Kirjanov <kda@...ux-powerpc.org>
---
 ip/ipaddress.c | 44 +++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 39 insertions(+), 5 deletions(-)

diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index b504200b..52078675 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -26,6 +26,7 @@
 
 #include <linux/netdevice.h>
 #include <linux/if_arp.h>
+#include <linux/if_infiniband.h>
 #include <linux/sockios.h>
 #include <linux/net_namespace.h>
 
@@ -349,9 +350,10 @@ static void print_af_spec(FILE *fp, struct rtattr *af_spec_attr)
 
 static void print_vf_stats64(FILE *fp, struct rtattr *vfstats);
 
-static void print_vfinfo(FILE *fp, struct rtattr *vfinfo)
+static void print_vfinfo(struct ifinfomsg *ifi, FILE *fp, struct rtattr *vfinfo)
 {
 	struct ifla_vf_mac *vf_mac;
+	struct ifla_vf_broadcast *vf_broadcast;
 	struct ifla_vf_tx_rate *vf_tx_rate;
 	struct rtattr *vf[IFLA_VF_MAX + 1] = {};
 
@@ -365,13 +367,45 @@ static void print_vfinfo(FILE *fp, struct rtattr *vfinfo)
 	parse_rtattr_nested(vf, IFLA_VF_MAX, vfinfo);
 
 	vf_mac = RTA_DATA(vf[IFLA_VF_MAC]);
+	vf_broadcast = RTA_DATA(vf[IFLA_VF_BROADCAST]);
 	vf_tx_rate = RTA_DATA(vf[IFLA_VF_TX_RATE]);
 
 	print_string(PRINT_FP, NULL, "%s    ", _SL_);
 	print_int(PRINT_ANY, "vf", "vf %d ", vf_mac->vf);
-	print_string(PRINT_ANY, "mac", "MAC %s",
-		     ll_addr_n2a((unsigned char *) &vf_mac->mac,
-				 ETH_ALEN, 0, b1, sizeof(b1)));
+
+	print_string(PRINT_ANY,
+			"link_type",
+			"    link/%s ",
+			ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
+
+	print_color_string(PRINT_ANY,
+				COLOR_MAC,
+				"address",
+				"%s",
+				ll_addr_n2a((unsigned char *) &vf_mac->mac,
+					ifi->ifi_type == ARPHRD_ETHER ?
+					ETH_ALEN : INFINIBAND_ALEN,
+					ifi->ifi_type,
+					b1, sizeof(b1)));
+
+	if (vf[IFLA_VF_BROADCAST]) {
+		if (ifi->ifi_flags&IFF_POINTOPOINT) {
+			print_string(PRINT_FP, NULL, " peer ", NULL);
+			print_bool(PRINT_JSON,
+					"link_pointtopoint", NULL, true);
+		} else
+			print_string(PRINT_FP, NULL, " brd ", NULL);
+
+		print_color_string(PRINT_ANY,
+				COLOR_MAC,
+				"broadcast",
+				"%s",
+				ll_addr_n2a((unsigned char *) &vf_broadcast->broadcast,
+					ifi->ifi_type == ARPHRD_ETHER ?
+					ETH_ALEN : INFINIBAND_ALEN,
+					ifi->ifi_type,
+					b1, sizeof(b1)));
+	}
 
 	if (vf[IFLA_VF_VLAN_LIST]) {
 		struct rtattr *i, *vfvlanlist = vf[IFLA_VF_VLAN_LIST];
@@ -1102,7 +1136,7 @@ int print_linkinfo(struct nlmsghdr *n, void *arg)
 		open_json_array(PRINT_JSON, "vfinfo_list");
 		for (i = RTA_DATA(vflist); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
 			open_json_object(NULL);
-			print_vfinfo(fp, i);
+			print_vfinfo(ifi, fp, i);
 			close_json_object();
 		}
 		close_json_array(PRINT_JSON, NULL);
-- 
2.12.3