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From 8e5969521d5df7a63d9a20597cb9d52b776c3e6e Mon Sep 17 00:00:00 2001
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From: Phil Sutter <psutter@redhat.com>
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Date: Tue, 28 Feb 2017 16:09:08 +0100
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Subject: [PATCH] bridge: Add learning and flood support
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1417289
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Upstream Status: iproute2.git commit f0f4ab600b5a9
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commit f0f4ab600b5a9d1f718c8812e20dffe61ca95989
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Author: Vlad Yasevich <vyasevic@redhat.com>
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Date: Wed May 21 09:53:43 2014 -0400
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bridge: Add learning and flood support
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Add ability to control learning and flood flags on bridge
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ports.
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Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
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---
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bridge/link.c | 22 ++++++++++++++++++++++
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man/man8/bridge.8 | 12 ++++++++++++
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2 files changed, 34 insertions(+)
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diff --git a/bridge/link.c b/bridge/link.c
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index 19d0642..176c906 100644
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--- a/bridge/link.c
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+++ b/bridge/link.c
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@@ -185,6 +185,12 @@ int print_linkinfo(const struct sockaddr_nl *who,
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if (prtb[IFLA_BRPORT_FAST_LEAVE])
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print_onoff(fp, "fastleave",
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rta_getattr_u8(prtb[IFLA_BRPORT_FAST_LEAVE]));
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+ if (prtb[IFLA_BRPORT_LEARNING])
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+ print_onoff(fp, "learning",
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+ rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING]));
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+ if (prtb[IFLA_BRPORT_UNICAST_FLOOD])
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+ print_onoff(fp, "flood",
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+ rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD]));
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}
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} else
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print_portstate(fp, rta_getattr_u8(tb[IFLA_PROTINFO]));
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@@ -214,6 +220,8 @@ static void usage(void)
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fprintf(stderr, " [ hairpin {on | off} ] \n");
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fprintf(stderr, " [ fastleave {on | off} ]\n");
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fprintf(stderr, " [ root_block {on | off} ]\n");
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+ fprintf(stderr, " [ learning {on | off} ]\n");
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+ fprintf(stderr, " [ flood {on | off} ]\n");
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fprintf(stderr, " [ hwmode {vepa | veb} ]\n");
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fprintf(stderr, " bridge link show [dev DEV]\n");
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exit(-1);
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@@ -243,6 +251,8 @@ static int brlink_modify(int argc, char **argv)
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char buf[512];
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} req;
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char *d = NULL;
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+ __s8 learning = -1;
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+ __s8 flood = -1;
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__s8 hairpin = -1;
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__s8 bpdu_guard = -1;
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__s8 fast_leave = -1;
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@@ -281,6 +291,14 @@ static int brlink_modify(int argc, char **argv)
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NEXT_ARG();
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if (!on_off("root_block", &root_block, *argv))
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exit(-1);
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+ } else if (strcmp(*argv, "learning") == 0) {
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+ NEXT_ARG();
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+ if (!on_off("learning", &learning, *argv))
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+ exit(-1);
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+ } else if (strcmp(*argv, "flood") == 0) {
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+ NEXT_ARG();
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+ if (!on_off("flood", &flood, *argv))
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+ exit(-1);
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} else if (strcmp(*argv, "cost") == 0) {
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NEXT_ARG();
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cost = atoi(*argv);
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@@ -335,6 +353,10 @@ static int brlink_modify(int argc, char **argv)
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fast_leave);
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if (root_block >= 0)
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addattr8(&req.n, sizeof(req), IFLA_BRPORT_PROTECT, root_block);
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+ if (flood >= 0)
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+ addattr8(&req.n, sizeof(req), IFLA_BRPORT_UNICAST_FLOOD, flood);
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+ if (learning >= 0)
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+ addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING, learning);
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if (cost > 0)
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addattr32(&req.n, sizeof(req), IFLA_BRPORT_COST, cost);
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diff --git a/man/man8/bridge.8 b/man/man8/bridge.8
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index 4f48546..5e51d54 100644
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--- a/man/man8/bridge.8
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+++ b/man/man8/bridge.8
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@@ -37,6 +37,8 @@ bridge \- show / manipulate bridge addresses and devices
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.BR hairpin " { " on " | " off " } ] [ "
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.BR fastleave " { " on " | " off " } ] [ "
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.BR root_block " { " on " | " off " } ] [ "
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+.BR learning " { " on " | " off " } ] [ "
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+.BR flood " { " on " | " off " } ] [ "
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.BR hwmode " { " vepa " | " veb " } ] "
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.ti -8
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@@ -255,6 +257,16 @@ Controls whether a given port is allowed to become root port or not. Only used
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when STP is enabled on the bridge. By default the flag is off.
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.TP
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+.BR "learning on " or " learning off "
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+Controls whether a given port will learn MAC addresses from received traffic or
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+not. If learning if off, the bridge will end up flooding any traffic for which
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+it has no FDB entry. By default this flag is on.
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+
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+.TP
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+.BR "flooding on " or " flooding off "
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+Controls whether a given port will flood unicast traffic for which there is no FDB entry. By default this flag is on.
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+
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+.TP
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.BI hwmode
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Some network interface cards support HW bridge functionality and they may be
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configured in different modes. Currently support modes are:
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--
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1.8.3.1
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