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bridge: fdb: support match on destination port in flush command

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Extend "fdb flush" command to match fdb entries with a specific destination
port.

Example:
$ bridge fdb flush dev vx10 port 1111
This will flush all fdb entries pointing to vx10 with destination port
1111.

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 13:55:29 +03:00 committed by David Ahern
parent 9107073a78
commit 1b429388aa
2 changed files with 28 additions and 1 deletions
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21
bridge/fdb.c
View File

@ -46,7 +46,7 @@ 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"
" [ nhid NHID ] [ vni VNI ] [ self ] [ master ]\n"
" [ nhid NHID ] [ vni VNI ] [ port PORT ] [ self ] [ master ]\n"
" [ [no]permanent | [no]static | [no]dynamic ]\n"
" [ [no]added_by_user ] [ [no]extern_learn ] [ [no]sticky ]\n"
" [ [no]offloaded ]\n");
@ -703,6 +703,7 @@ static int fdb_flush(int argc, char **argv)
unsigned short ndm_state = 0;
unsigned long src_vni = ~0;
unsigned long vni = ~0;
unsigned long port = 0;
__u32 nhid = 0;
char *endptr;
@ -782,6 +783,18 @@ static int fdb_flush(int argc, char **argv)
if ((endptr && *endptr) ||
(vni >> 24) || vni == ULONG_MAX)
invarg("invalid VNI\n", *argv);
} else if (strcmp(*argv, "port") == 0) {
NEXT_ARG();
port = strtoul(*argv, &endptr, 0);
if (endptr && *endptr) {
struct servent *pse;
pse = getservbyname(*argv, "udp");
if (!pse)
invarg("invalid port\n", *argv);
port = ntohs(pse->s_port);
} else if (port > 0xffff)
invarg("invalid port\n", *argv);
} else if (strcmp(*argv, "help") == 0) {
NEXT_ARG();
} else {
@ -834,6 +847,12 @@ static int fdb_flush(int argc, char **argv)
addattr32(&req.n, sizeof(req), NDA_NH_ID, nhid);
if (vni != ~0)
addattr32(&req.n, sizeof(req), NDA_VNI, vni);
if (port) {
unsigned short dport;
dport = htons((unsigned short)port);
addattr16(&req.n, sizeof(req), NDA_PORT, dport);
}
if (ndm_flags_mask)
addattr8(&req.n, sizeof(req), NDA_NDM_FLAGS_MASK,
ndm_flags_mask);

8
man/man8/bridge.8
View File

@ -134,6 +134,8 @@ bridge \- show / manipulate bridge addresses and devices
.IR NHID " ] ["
.B vni
.IR VNI " ] [ "
.B port
.IR PORT " ] ["
.BR self " ] [ " master " ] [ "
.BR [no]permanent " | " [no]static " | " [no]dynamic " ] [ "
.BR [no]added_by_user " ] [ " [no]extern_learn " ] [ "
@ -915,6 +917,12 @@ the VXLAN 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 port " PORT"
the UDP destination PORT number for the operation. Match forwarding table
entries only with the specified PORT. 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