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Nikolay Aleksandrov says:

====================
bridge: complete netlink support

This set completes the bridge device's netlink support and makes it
possible to view and configure everything that can be configured via
sysfs. I have tested all of these (setting and getting). There're a few
longer line warnings about the br_get_size() ifla comments but I think we
should have them to know what has been accounted for. I have used the sysfs
interface as a guide of what and how to set. As usual I'll send the
corresponding iproute2 patches later.
The bridge port's netlink interface will be completed after this set gets
applied in some form.

This patch-set is on top of my last vlan cleanups set:
http://www.spinics.net/lists/netdev/msg346005.html
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller committed Oct 4, 2015
2 parents 68d4e52 + 0f963b7 commit 3e087ca
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Showing 4 changed files with 326 additions and 9 deletions.
36 changes: 36 additions & 0 deletions include/uapi/linux/if_link.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -232,11 +232,47 @@ enum {
IFLA_BR_PRIORITY,
IFLA_BR_VLAN_FILTERING,
IFLA_BR_VLAN_PROTOCOL,
IFLA_BR_GROUP_FWD_MASK,
IFLA_BR_ROOT_ID,
IFLA_BR_BRIDGE_ID,
IFLA_BR_ROOT_PORT,
IFLA_BR_ROOT_PATH_COST,
IFLA_BR_TOPOLOGY_CHANGE,
IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
IFLA_BR_HELLO_TIMER,
IFLA_BR_TCN_TIMER,
IFLA_BR_TOPOLOGY_CHANGE_TIMER,
IFLA_BR_GC_TIMER,
IFLA_BR_GROUP_ADDR,
IFLA_BR_FDB_FLUSH,
IFLA_BR_MCAST_ROUTER,
IFLA_BR_MCAST_SNOOPING,
IFLA_BR_MCAST_QUERY_USE_IFADDR,
IFLA_BR_MCAST_QUERIER,
IFLA_BR_MCAST_HASH_ELASTICITY,
IFLA_BR_MCAST_HASH_MAX,
IFLA_BR_MCAST_LAST_MEMBER_CNT,
IFLA_BR_MCAST_STARTUP_QUERY_CNT,
IFLA_BR_MCAST_LAST_MEMBER_INTVL,
IFLA_BR_MCAST_MEMBERSHIP_INTVL,
IFLA_BR_MCAST_QUERIER_INTVL,
IFLA_BR_MCAST_QUERY_INTVL,
IFLA_BR_MCAST_QUERY_RESPONSE_INTVL,
IFLA_BR_MCAST_STARTUP_QUERY_INTVL,
IFLA_BR_NF_CALL_IPTABLES,
IFLA_BR_NF_CALL_IP6TABLES,
IFLA_BR_NF_CALL_ARPTABLES,
IFLA_BR_VLAN_DEFAULT_PVID,
__IFLA_BR_MAX,
};

#define IFLA_BR_MAX (__IFLA_BR_MAX - 1)

struct ifla_bridge_id {
__u8 prio[2];
__u8 addr[6]; /* ETH_ALEN */
};

enum {
BRIDGE_MODE_UNSPEC,
BRIDGE_MODE_HAIRPIN,
Expand Down
284 changes: 282 additions & 2 deletions net/bridge/br_netlink.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -764,6 +764,27 @@ static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
[IFLA_BR_PRIORITY] = { .type = NLA_U16 },
[IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
[IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
[IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
[IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
.len = ETH_ALEN },
[IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
[IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
[IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
[IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
[IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
[IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
[IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
[IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
[IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
[IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
[IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
[IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
[IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
[IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
[IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
[IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
[IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
};

static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
Expand Down Expand Up @@ -827,6 +848,158 @@ static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
if (err)
return err;
}

if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
__u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);

err = __br_vlan_set_default_pvid(br, defpvid);
if (err)
return err;
}
#endif

if (data[IFLA_BR_GROUP_FWD_MASK]) {
u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);

if (fwd_mask & BR_GROUPFWD_RESTRICTED)
return -EINVAL;
br->group_fwd_mask = fwd_mask;
}

if (data[IFLA_BR_GROUP_ADDR]) {
u8 new_addr[ETH_ALEN];

if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
return -EINVAL;
memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
if (!is_link_local_ether_addr(new_addr))
return -EINVAL;
if (new_addr[5] == 1 || /* 802.3x Pause address */
new_addr[5] == 2 || /* 802.3ad Slow protocols */
new_addr[5] == 3) /* 802.1X PAE address */
return -EINVAL;
spin_lock_bh(&br->lock);
memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
spin_unlock_bh(&br->lock);
br->group_addr_set = true;
br_recalculate_fwd_mask(br);
}

if (data[IFLA_BR_FDB_FLUSH])
br_fdb_flush(br);

#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
if (data[IFLA_BR_MCAST_ROUTER]) {
u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);

err = br_multicast_set_router(br, multicast_router);
if (err)
return err;
}

if (data[IFLA_BR_MCAST_SNOOPING]) {
u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);

err = br_multicast_toggle(br, mcast_snooping);
if (err)
return err;
}

if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
u8 val;

val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
br->multicast_query_use_ifaddr = !!val;
}

if (data[IFLA_BR_MCAST_QUERIER]) {
u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);

err = br_multicast_set_querier(br, mcast_querier);
if (err)
return err;
}

if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) {
u32 val = nla_get_u32(data[IFLA_BR_MCAST_HASH_ELASTICITY]);

br->hash_elasticity = val;
}

if (data[IFLA_BR_MCAST_HASH_MAX]) {
u32 hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);

err = br_multicast_set_hash_max(br, hash_max);
if (err)
return err;
}

if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);

br->multicast_last_member_count = val;
}

if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);

br->multicast_startup_query_count = val;
}

if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);

br->multicast_last_member_interval = clock_t_to_jiffies(val);
}

if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);

br->multicast_membership_interval = clock_t_to_jiffies(val);
}

if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);

br->multicast_querier_interval = clock_t_to_jiffies(val);
}

if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);

br->multicast_query_interval = clock_t_to_jiffies(val);
}

if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);

br->multicast_query_response_interval = clock_t_to_jiffies(val);
}

if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);

br->multicast_startup_query_interval = clock_t_to_jiffies(val);
}
#endif
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
if (data[IFLA_BR_NF_CALL_IPTABLES]) {
u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);

br->nf_call_iptables = val ? true : false;
}

if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);

br->nf_call_ip6tables = val ? true : false;
}

if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);

br->nf_call_arptables = val ? true : false;
}
#endif

return 0;
Expand All @@ -843,32 +1016,139 @@ static size_t br_get_size(const struct net_device *brdev)
nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */
#endif
nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */
nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */
nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */
nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */
nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */
nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */
nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
nla_total_size(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
nla_total_size(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
nla_total_size(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
nla_total_size(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */
nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */
nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */
nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
#endif
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */
nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */
nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */
#endif
0;
}

static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
{
struct net_bridge *br = netdev_priv(brdev);
u64 hello_timer, tcn_timer, topology_change_timer, gc_timer, clockval;
u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
u32 hello_time = jiffies_to_clock_t(br->hello_time);
u32 age_time = jiffies_to_clock_t(br->max_age);
u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
u32 stp_enabled = br->stp_enabled;
u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
u16 group_fwd_mask = br->group_fwd_mask;
u8 vlan_enabled = br_vlan_enabled(br);
struct ifla_bridge_id root_id, bridge_id;

memset(&bridge_id, 0, sizeof(bridge_id));
memset(&root_id, 0, sizeof(root_id));
memcpy(root_id.prio, br->designated_root.prio, sizeof(root_id.prio));
memcpy(root_id.addr, br->designated_root.addr, sizeof(root_id.addr));
memcpy(bridge_id.prio, br->bridge_id.prio, sizeof(bridge_id.prio));
memcpy(bridge_id.addr, br->bridge_id.addr, sizeof(bridge_id.addr));
hello_timer = br_timer_value(&br->hello_timer);
tcn_timer = br_timer_value(&br->tcn_timer);
topology_change_timer = br_timer_value(&br->topology_change_timer);
gc_timer = br_timer_value(&br->gc_timer);
clockval = 0;

if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled))
nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, group_fwd_mask) ||
nla_put(skb, IFLA_BR_ROOT_ID, sizeof(root_id), &root_id) ||
nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(bridge_id), &bridge_id) ||
nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
br->topology_change_detected) ||
nla_put_u64(skb, IFLA_BR_HELLO_TIMER, hello_timer) ||
nla_put_u64(skb, IFLA_BR_TCN_TIMER, tcn_timer) ||
nla_put_u64(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER,
topology_change_timer) ||
nla_put_u64(skb, IFLA_BR_GC_TIMER, gc_timer) ||
nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr))
return -EMSGSIZE;

#ifdef CONFIG_BRIDGE_VLAN_FILTERING
if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto))
if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid))
return -EMSGSIZE;
#endif
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) ||
nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
br->multicast_query_use_ifaddr) ||
nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, br->multicast_querier) ||
nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY,
br->hash_elasticity) ||
nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
br->multicast_last_member_count) ||
nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
br->multicast_startup_query_count))
return -EMSGSIZE;

clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
if (nla_put_u64(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval))
return -EMSGSIZE;
clockval = jiffies_to_clock_t(br->multicast_membership_interval);
if (nla_put_u64(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval))
return -EMSGSIZE;
clockval = jiffies_to_clock_t(br->multicast_querier_interval);
if (nla_put_u64(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval))
return -EMSGSIZE;
clockval = jiffies_to_clock_t(br->multicast_query_interval);
if (nla_put_u64(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval))
return -EMSGSIZE;
clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
if (nla_put_u64(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval))
return -EMSGSIZE;
clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
if (nla_put_u64(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval))
return -EMSGSIZE;
#endif
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
br->nf_call_iptables ? 1 : 0) ||
nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
br->nf_call_ip6tables ? 1 : 0) ||
nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
br->nf_call_arptables ? 1 : 0))
return -EMSGSIZE;
#endif

Expand Down
1 change: 1 addition & 0 deletions net/bridge/br_private.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -690,6 +690,7 @@ int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
int br_vlan_init(struct net_bridge *br);
int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid);
int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
void nbp_vlan_flush(struct net_bridge_port *port);
Expand Down
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