| Message ID | 20210512231941.19211-4-linus.luessing@c0d3.blue (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: bridge: split IPv4/v6 mc router state and export for batman-adv | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Clearly marked for net-next |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | success | CCed 6 of 6 maintainers |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 63 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/header_inline | success | Link |
On 13/05/2021 02:19, Linus Lüssing wrote: > In preparation for the upcoming split of multicast router state into > their IPv4 and IPv6 variants and to avoid IPv6 #ifdef clutter later add > some inline functions for the protocol specific parts in the mdb router > netlink code. Also the we need iterate over the port instead of router > list to be able put one router port entry with both the IPv4 and IPv6 > multicast router info later. > > Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> > --- > net/bridge/br_mdb.c | 39 ++++++++++++++++++++++++++++++++++----- > 1 file changed, 34 insertions(+), 5 deletions(-) > Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index d61def8..482edb9 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -16,29 +16,58 @@ #include "br_private.h" +static bool br_rports_have_mc_router(struct net_bridge *br) +{ + return !hlist_empty(&br->ip4_mc_router_list); +} + +static bool +br_ip4_rports_get_timer(struct net_bridge_port *port, unsigned long *timer) +{ + *timer = br_timer_value(&port->ip4_mc_router_timer); + return !hlist_unhashed(&port->ip4_rlist); +} + +static bool +br_ip6_rports_get_timer(struct net_bridge_port *port, unsigned long *timer) +{ + *timer = 0; + return false; +} + static int br_rports_fill_info(struct sk_buff *skb, struct netlink_callback *cb, struct net_device *dev) { struct net_bridge *br = netdev_priv(dev); - struct net_bridge_port *p; + bool have_ip4_mc_rtr, have_ip6_mc_rtr; + unsigned long ip4_timer, ip6_timer; struct nlattr *nest, *port_nest; + struct net_bridge_port *p; - if (!br->multicast_router || hlist_empty(&br->ip4_mc_router_list)) + if (!br->multicast_router) + return 0; + + if (!br_rports_have_mc_router(br)) return 0; nest = nla_nest_start_noflag(skb, MDBA_ROUTER); if (nest == NULL) return -EMSGSIZE; - hlist_for_each_entry_rcu(p, &br->ip4_mc_router_list, ip4_rlist) { - if (!p) + list_for_each_entry_rcu(p, &br->port_list, list) { + have_ip4_mc_rtr = br_ip4_rports_get_timer(p, &ip4_timer); + have_ip6_mc_rtr = br_ip6_rports_get_timer(p, &ip6_timer); + + if (!have_ip4_mc_rtr && !have_ip6_mc_rtr) continue; + port_nest = nla_nest_start_noflag(skb, MDBA_ROUTER_PORT); if (!port_nest) goto fail; + if (nla_put_nohdr(skb, sizeof(u32), &p->dev->ifindex) || nla_put_u32(skb, MDBA_ROUTER_PATTR_TIMER, - br_timer_value(&p->ip4_mc_router_timer)) || + max(ip4_timer, ip6_timer)) || nla_put_u8(skb, MDBA_ROUTER_PATTR_TYPE, p->multicast_router)) { nla_nest_cancel(skb, port_nest);
In preparation for the upcoming split of multicast router state into their IPv4 and IPv6 variants and to avoid IPv6 #ifdef clutter later add some inline functions for the protocol specific parts in the mdb router netlink code. Also the we need iterate over the port instead of router list to be able put one router port entry with both the IPv4 and IPv6 multicast router info later. Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> --- net/bridge/br_mdb.c | 39 ++++++++++++++++++++++++++++++++++----- 1 file changed, 34 insertions(+), 5 deletions(-)