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bridge: fdb: support match on nexthop ID in flush command

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Extend "fdb flush" command to match fdb entries with a specific nexthop ID.

Example:
$ bridge fdb flush dev vx10 nhid 2
This will flush all fdb entries pointing to vx10 with nexthop ID 2.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David Ahern <dsahern@kernel.org>
This commit is contained in:
Amit Cohen 2023-10-17 13:55:27 +03:00 committed by David Ahern
parent 69b0310e82
commit f3c34db4be
2 changed files with 16 additions and 1 deletions
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10
bridge/fdb.c
View File

@ -46,7 +46,8 @@ static void usage(void)
" bridge fdb get [ to ] LLADDR [ br BRDEV ] { brport | dev } DEV\n"
" [ vlan VID ] [ vni VNI ] [ self ] [ master ] [ dynamic ]\n"
" bridge fdb flush dev DEV [ brport DEV ] [ vlan VID ] [ src_vni VNI ]\n"
" [ self ] [ master ] [ [no]permanent | [no]static | [no]dynamic ]\n"
" [ nhid NHID ] [ self ] [ master ]\n"
" [ [no]permanent | [no]static | [no]dynamic ]\n"
" [ [no]added_by_user ] [ [no]extern_learn ] [ [no]sticky ]\n"
" [ [no]offloaded ]\n");
exit(-1);
@ -701,6 +702,7 @@ static int fdb_flush(int argc, char **argv)
unsigned short ndm_flags = 0;
unsigned short ndm_state = 0;
unsigned long src_vni = ~0;
__u32 nhid = 0;
char *endptr;
while (argc > 0) {
@ -769,6 +771,10 @@ static int fdb_flush(int argc, char **argv)
if ((endptr && *endptr) ||
(src_vni >> 24) || src_vni == ULONG_MAX)
invarg("invalid src VNI\n", *argv);
} else if (strcmp(*argv, "nhid") == 0) {
NEXT_ARG();
if (get_u32(&nhid, *argv, 0))
invarg("\"nid\" value is invalid\n", *argv);
} else if (strcmp(*argv, "help") == 0) {
NEXT_ARG();
} else {
@ -817,6 +823,8 @@ static int fdb_flush(int argc, char **argv)
addattr16(&req.n, sizeof(req), NDA_VLAN, vid);
if (src_vni != ~0)
addattr32(&req.n, sizeof(req), NDA_SRC_VNI, src_vni);
if (nhid > 0)
addattr32(&req.n, sizeof(req), NDA_NH_ID, nhid);
if (ndm_flags_mask)
addattr8(&req.n, sizeof(req), NDA_NDM_FLAGS_MASK,
ndm_flags_mask);

7
man/man8/bridge.8
View File

@ -130,6 +130,8 @@ bridge \- show / manipulate bridge addresses and devices
.IR VID " ] [ "
.B src_vni
.IR VNI " ] [ "
.B nhid
.IR NHID " ] ["
.BR self " ] [ " master " ] [ "
.BR [no]permanent " | " [no]static " | " [no]dynamic " ] [ "
.BR [no]added_by_user " ] [ " [no]extern_learn " ] [ "
@ -900,6 +902,11 @@ the src VNI Network Identifier (or VXLAN Segment ID) for the operation. Match
forwarding table entries only with the specified VNI. Valid if the referenced
device is a VXLAN type device.
.TP
.BI nhid " NHID"
the ECMP nexthop group for the operation. Match forwarding table entries only
with the specified NHID. Valid if the referenced device is a VXLAN type device.
.TP
.B self
the operation is fulfilled directly by the driver for the specified network