On 11/04/2022 11:57, Ido Schimmel wrote: > On Sat, Apr 09, 2022 at 01:58:56PM +0300, Nikolay Aleksandrov wrote: >> Add support for fdb flush filtering based on destination ifindex. The >> ifindex must either match a port's device ifindex or the bridge's. >> >> Signed-off-by: Nikolay Aleksandrov <[email protected]> >> --- >> include/uapi/linux/if_bridge.h | 1 + >> net/bridge/br_fdb.c | 7 +++++++ >> 2 files changed, 8 insertions(+) >> >> diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h >> index 4638d7e39f2a..67ee12586844 100644 >> --- a/include/uapi/linux/if_bridge.h >> +++ b/include/uapi/linux/if_bridge.h >> @@ -819,6 +819,7 @@ enum { >> FDB_FLUSH_NDM_STATE_MASK, >> FDB_FLUSH_NDM_FLAGS, >> FDB_FLUSH_NDM_FLAGS_MASK, >> + FDB_FLUSH_PORT_IFINDEX, >> __FDB_FLUSH_MAX >> }; >> #define FDB_FLUSH_MAX (__FDB_FLUSH_MAX - 1) >> diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c >> index 340a2ace1d5e..53208adf7474 100644 >> --- a/net/bridge/br_fdb.c >> +++ b/net/bridge/br_fdb.c >> @@ -628,6 +628,7 @@ static const struct nla_policy >> br_fdb_flush_policy[FDB_FLUSH_MAX + 1] = { >> [FDB_FLUSH_NDM_FLAGS] = { .type = NLA_U16 }, >> [FDB_FLUSH_NDM_STATE_MASK] = { .type = NLA_U16 }, >> [FDB_FLUSH_NDM_FLAGS_MASK] = { .type = NLA_U16 }, >> + [FDB_FLUSH_PORT_IFINDEX] = { .type = NLA_S32 }, >> }; >> >> int br_fdb_flush_nlattr(struct net_bridge *br, struct nlattr >> *fdb_flush_attr, >> @@ -664,6 +665,12 @@ int br_fdb_flush_nlattr(struct net_bridge *br, struct >> nlattr *fdb_flush_attr, >> ndm_flags_mask = >> nla_get_u16(fdb_flush_tb[FDB_FLUSH_NDM_FLAGS_MASK]); >> desc.flags_mask |= __ndm_flags_to_fdb_flags(ndm_flags_mask); >> } >> + if (fdb_flush_tb[FDB_FLUSH_PORT_IFINDEX]) { >> + int port_ifidx; >> + >> + port_ifidx = nla_get_u32(fdb_flush_tb[FDB_FLUSH_PORT_IFINDEX]); >> + desc.port_ifindex = port_ifidx; > > Commit message says "ifindex must either match a port's device ifindex > or the bridge's", but there is no validation. I realize such an > operation won't flush anything, but it's cleaner to just reject it here. >
Sure, I can add a check for the device when specified. >> + } >> >> br_debug(br, "flushing port ifindex: %d vlan id: %u flags: 0x%lx flags >> mask: 0x%lx\n", >> desc.port_ifindex, desc.vlan_id, desc.flags, desc.flags_mask); >> -- >> 2.35.1 >>
