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[netdata] add feature for BR to request router role upgrade (#7597)

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This commit adds a new mechanism to allow border routers to request
router role upgrade.

A border router which provides IP connectivity (either adding an
external route prefix or an on-mesh prefix with default route flag)
and is acting as a REED is eligible to request a router role upgrade
by sending an "Address Solicit" request to leader with status reason
`BorderRouterRequest`. This reason is used when the number of active
routers in the Thread mesh is above the threshold, and only if the
number of existing eligible BRs (determined from the network data)
that are acting as router is less than two. This mechanism  allows up
to two eligible border routers to request router role upgrade when
the number of routers is already above the threshold.

This commit also adds a new test-case `test_br_upgrade_router_role`
which validates the behavior of the new mechanism.
This commit is contained in:
Abtin Keshavarzian
2022-06-22 11:45:30 -07:00
committed by GitHub
parent 4164a5029d
commit 64e837861f
14 changed files with 452 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tests/unit/test_network_data.cpp
+40 -7
View File
@@ -149,7 +149,8 @@ void TestNetworkDataIterator(void)
},
};
const uint16_t kRlocs[] = {0xc800, 0x5400};
const uint16_t kRlocs[] = {0xc800, 0x5400};
const uint16_t kNonExistingRlocs[] = {0xc700, 0x0000, 0x5401};
NetworkData netData(*instance, kNetworkData, sizeof(kNetworkData));
@@ -179,6 +180,16 @@ void TestNetworkDataIterator(void)
SuccessOrQuit(netData.FindBorderRouters(kChildRoleOnly, rlocs, rlocsLength));
VerifyOrQuit(rlocsLength == 0);
VerifyOrQuit(netData.CountBorderRouters(kChildRoleOnly) == 0);
for (uint16_t rloc16 : kRlocs)
{
VerifyOrQuit(netData.ContainsBorderRouterWithRloc(rloc16));
}
for (uint16_t rloc16 : kNonExistingRlocs)
{
VerifyOrQuit(!netData.ContainsBorderRouterWithRloc(rloc16));
}
}
{
@@ -252,9 +263,10 @@ void TestNetworkDataIterator(void)
},
};
const uint16_t kRlocsAnyRole[] = {0x1000, 0x5400, 0x0401};
const uint16_t kRlocsRouterRole[] = {0x1000, 0x5400};
const uint16_t kRlocsChildRole[] = {0x0401};
const uint16_t kRlocsAnyRole[] = {0x1000, 0x5400, 0x0401};
const uint16_t kRlocsRouterRole[] = {0x1000, 0x5400};
const uint16_t kRlocsChildRole[] = {0x0401};
const uint16_t kNonExistingRlocs[] = {0x6000, 0x0000, 0x0402};
NetworkData netData(*instance, kNetworkData, sizeof(kNetworkData));
@@ -297,6 +309,16 @@ void TestNetworkDataIterator(void)
rlocsLength = GetArrayLength(kRlocsAnyRole);
SuccessOrQuit(netData.FindBorderRouters(kAnyRole, rlocs, rlocsLength));
VerifyRlocsArray(rlocs, rlocsLength, kRlocsAnyRole);
for (uint16_t rloc16 : kRlocsAnyRole)
{
VerifyOrQuit(netData.ContainsBorderRouterWithRloc(rloc16));
}
for (uint16_t rloc16 : kNonExistingRlocs)
{
VerifyOrQuit(!netData.ContainsBorderRouterWithRloc(rloc16));
}
}
{
@@ -410,9 +432,10 @@ void TestNetworkDataIterator(void)
},
};
const uint16_t kRlocsAnyRole[] = {0xec00, 0x2801, 0x2800};
const uint16_t kRlocsRouterRole[] = {0xec00, 0x2800};
const uint16_t kRlocsChildRole[] = {0x2801};
const uint16_t kRlocsAnyRole[] = {0xec00, 0x2801, 0x2800};
const uint16_t kRlocsRouterRole[] = {0xec00, 0x2800};
const uint16_t kRlocsChildRole[] = {0x2801};
const uint16_t kNonExistingRlocs[] = {0x6000, 0x0000, 0x2806, 0x4c00};
NetworkData netData(*instance, kNetworkData, sizeof(kNetworkData));
@@ -451,6 +474,16 @@ void TestNetworkDataIterator(void)
SuccessOrQuit(netData.FindBorderRouters(kChildRoleOnly, rlocs, rlocsLength));
VerifyRlocsArray(rlocs, rlocsLength, kRlocsChildRole);
VerifyOrQuit(netData.CountBorderRouters(kChildRoleOnly) == GetArrayLength(kRlocsChildRole));
for (uint16_t rloc16 : kRlocsAnyRole)
{
VerifyOrQuit(netData.ContainsBorderRouterWithRloc(rloc16));
}
for (uint16_t rloc16 : kNonExistingRlocs)
{
VerifyOrQuit(!netData.ContainsBorderRouterWithRloc(rloc16));
}
}
testFreeInstance(instance);