forked from Minki/linux
bridge: mrp: Implement the MRP Interconnect API
Thie patch adds support for MRP Interconnect. Similar with the MRP ring, if the HW can't generate MRP_InTest frames, then the SW will try to generate them. And if also the SW fails to generate the frames then an error is return to userspace. The forwarding/termination of MRP_In frames is happening in the kernel and is done by MRP instances. Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Horatiu Vultur
David S. Miller
parent
f23f0db360
commit
537ed5676d
@ -4,6 +4,27 @@
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#include "br_private_mrp.h"
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static const u8 mrp_test_dmac[ETH_ALEN] = { 0x1, 0x15, 0x4e, 0x0, 0x0, 0x1 };
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static const u8 mrp_in_test_dmac[ETH_ALEN] = { 0x1, 0x15, 0x4e, 0x0, 0x0, 0x3 };
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static bool br_mrp_is_ring_port(struct net_bridge_port *p_port,
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struct net_bridge_port *s_port,
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struct net_bridge_port *port)
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{
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if (port == p_port ||
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port == s_port)
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return true;
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return false;
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}
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static bool br_mrp_is_in_port(struct net_bridge_port *i_port,
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struct net_bridge_port *port)
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{
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if (port == i_port)
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return true;
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return false;
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}
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static struct net_bridge_port *br_mrp_get_port(struct net_bridge *br,
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u32 ifindex)
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@ -37,6 +58,22 @@ static struct br_mrp *br_mrp_find_id(struct net_bridge *br, u32 ring_id)
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return res;
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}
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static struct br_mrp *br_mrp_find_in_id(struct net_bridge *br, u32 in_id)
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{
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struct br_mrp *res = NULL;
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struct br_mrp *mrp;
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list_for_each_entry_rcu(mrp, &br->mrp_list, list,
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lockdep_rtnl_is_held()) {
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if (mrp->in_id == in_id) {
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res = mrp;
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break;
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}
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}
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return res;
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}
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static bool br_mrp_unique_ifindex(struct net_bridge *br, u32 ifindex)
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{
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struct br_mrp *mrp;
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@ -52,6 +89,10 @@ static bool br_mrp_unique_ifindex(struct net_bridge *br, u32 ifindex)
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p = rtnl_dereference(mrp->s_port);
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if (p && p->dev->ifindex == ifindex)
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return false;
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p = rtnl_dereference(mrp->i_port);
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if (p && p->dev->ifindex == ifindex)
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return false;
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}
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return true;
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@ -66,7 +107,8 @@ static struct br_mrp *br_mrp_find_port(struct net_bridge *br,
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list_for_each_entry_rcu(mrp, &br->mrp_list, list,
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lockdep_rtnl_is_held()) {
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if (rcu_access_pointer(mrp->p_port) == p ||
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rcu_access_pointer(mrp->s_port) == p) {
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rcu_access_pointer(mrp->s_port) == p ||
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rcu_access_pointer(mrp->i_port) == p) {
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res = mrp;
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break;
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}
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@ -160,6 +202,36 @@ static struct sk_buff *br_mrp_alloc_test_skb(struct br_mrp *mrp,
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return skb;
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}
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static struct sk_buff *br_mrp_alloc_in_test_skb(struct br_mrp *mrp,
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struct net_bridge_port *p,
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enum br_mrp_port_role_type port_role)
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{
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struct br_mrp_in_test_hdr *hdr = NULL;
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struct sk_buff *skb = NULL;
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if (!p)
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return NULL;
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skb = br_mrp_skb_alloc(p, p->dev->dev_addr, mrp_in_test_dmac);
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if (!skb)
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return NULL;
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br_mrp_skb_tlv(skb, BR_MRP_TLV_HEADER_IN_TEST, sizeof(*hdr));
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hdr = skb_put(skb, sizeof(*hdr));
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hdr->id = cpu_to_be16(mrp->in_id);
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ether_addr_copy(hdr->sa, p->br->dev->dev_addr);
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hdr->port_role = cpu_to_be16(port_role);
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hdr->state = cpu_to_be16(mrp->in_state);
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hdr->transitions = cpu_to_be16(mrp->in_transitions);
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hdr->timestamp = cpu_to_be32(jiffies_to_msecs(jiffies));
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br_mrp_skb_common(skb, mrp);
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br_mrp_skb_tlv(skb, BR_MRP_TLV_HEADER_END, 0x0);
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return skb;
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}
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/* This function is continuously called in the following cases:
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* - when node role is MRM, in this case test_monitor is always set to false
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* because it needs to notify the userspace that the ring is open and needs to
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@ -239,6 +311,83 @@ out:
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usecs_to_jiffies(mrp->test_interval));
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}
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/* This function is continuously called when the node has the interconnect role
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* MIM. It would generate interconnect test frames and will send them on all 3
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* ports. But will also check if it stop receiving interconnect test frames.
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*/
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static void br_mrp_in_test_work_expired(struct work_struct *work)
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{
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struct delayed_work *del_work = to_delayed_work(work);
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struct br_mrp *mrp = container_of(del_work, struct br_mrp, in_test_work);
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struct net_bridge_port *p;
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bool notify_open = false;
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struct sk_buff *skb;
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if (time_before_eq(mrp->in_test_end, jiffies))
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return;
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if (mrp->in_test_count_miss < mrp->in_test_max_miss) {
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mrp->in_test_count_miss++;
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} else {
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/* Notify that the interconnect ring is open only if the
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* interconnect ring state is closed, otherwise it would
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* continue to notify at every interval.
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*/
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if (mrp->in_state == BR_MRP_IN_STATE_CLOSED)
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notify_open = true;
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}
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rcu_read_lock();
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p = rcu_dereference(mrp->p_port);
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if (p) {
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skb = br_mrp_alloc_in_test_skb(mrp, p,
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BR_MRP_PORT_ROLE_PRIMARY);
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if (!skb)
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goto out;
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skb_reset_network_header(skb);
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dev_queue_xmit(skb);
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if (notify_open && !mrp->in_role_offloaded)
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br_mrp_in_port_open(p->dev, true);
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}
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p = rcu_dereference(mrp->s_port);
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if (p) {
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skb = br_mrp_alloc_in_test_skb(mrp, p,
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BR_MRP_PORT_ROLE_SECONDARY);
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if (!skb)
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goto out;
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skb_reset_network_header(skb);
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dev_queue_xmit(skb);
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if (notify_open && !mrp->in_role_offloaded)
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br_mrp_in_port_open(p->dev, true);
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}
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p = rcu_dereference(mrp->i_port);
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if (p) {
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skb = br_mrp_alloc_in_test_skb(mrp, p,
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BR_MRP_PORT_ROLE_INTER);
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if (!skb)
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goto out;
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skb_reset_network_header(skb);
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dev_queue_xmit(skb);
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if (notify_open && !mrp->in_role_offloaded)
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br_mrp_in_port_open(p->dev, true);
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}
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out:
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rcu_read_unlock();
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queue_delayed_work(system_wq, &mrp->in_test_work,
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usecs_to_jiffies(mrp->in_test_interval));
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}
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/* Deletes the MRP instance.
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* note: called under rtnl_lock
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*/
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@ -251,6 +400,10 @@ static void br_mrp_del_impl(struct net_bridge *br, struct br_mrp *mrp)
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cancel_delayed_work_sync(&mrp->test_work);
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br_mrp_switchdev_send_ring_test(br, mrp, 0, 0, 0, 0);
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/* Stop sending MRP_InTest frames if has an interconnect role */
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cancel_delayed_work_sync(&mrp->in_test_work);
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br_mrp_switchdev_send_in_test(br, mrp, 0, 0, 0);
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br_mrp_switchdev_del(br, mrp);
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/* Reset the ports */
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@ -278,6 +431,18 @@ static void br_mrp_del_impl(struct net_bridge *br, struct br_mrp *mrp)
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rcu_assign_pointer(mrp->s_port, NULL);
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}
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p = rtnl_dereference(mrp->i_port);
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if (p) {
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spin_lock_bh(&br->lock);
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state = netif_running(br->dev) ?
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BR_STATE_FORWARDING : BR_STATE_DISABLED;
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p->state = state;
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p->flags &= ~BR_MRP_AWARE;
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spin_unlock_bh(&br->lock);
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br_mrp_port_switchdev_set_state(p, state);
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rcu_assign_pointer(mrp->i_port, NULL);
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}
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list_del_rcu(&mrp->list);
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kfree_rcu(mrp, rcu);
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}
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@ -329,6 +494,7 @@ int br_mrp_add(struct net_bridge *br, struct br_mrp_instance *instance)
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rcu_assign_pointer(mrp->s_port, p);
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INIT_DELAYED_WORK(&mrp->test_work, br_mrp_test_work_expired);
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INIT_DELAYED_WORK(&mrp->in_test_work, br_mrp_in_test_work_expired);
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list_add_tail_rcu(&mrp->list, &br->mrp_list);
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err = br_mrp_switchdev_add(br, mrp);
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@ -511,6 +677,180 @@ int br_mrp_start_test(struct net_bridge *br,
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return 0;
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}
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/* Set in state, int state can be only Open or Closed
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* note: already called with rtnl_lock
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*/
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int br_mrp_set_in_state(struct net_bridge *br, struct br_mrp_in_state *state)
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{
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struct br_mrp *mrp = br_mrp_find_in_id(br, state->in_id);
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if (!mrp)
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return -EINVAL;
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if (mrp->in_state == BR_MRP_IN_STATE_CLOSED &&
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state->in_state != BR_MRP_IN_STATE_CLOSED)
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mrp->in_transitions++;
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mrp->in_state = state->in_state;
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br_mrp_switchdev_set_in_state(br, mrp, state->in_state);
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return 0;
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}
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/* Set in role, in role can be only MIM(Media Interconnection Manager) or
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* MIC(Media Interconnection Client).
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* note: already called with rtnl_lock
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*/
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int br_mrp_set_in_role(struct net_bridge *br, struct br_mrp_in_role *role)
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{
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struct br_mrp *mrp = br_mrp_find_id(br, role->ring_id);
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struct net_bridge_port *p;
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int err;
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if (!mrp)
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return -EINVAL;
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if (!br_mrp_get_port(br, role->i_ifindex))
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return -EINVAL;
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if (role->in_role == BR_MRP_IN_ROLE_DISABLED) {
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u8 state;
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/* It is not allowed to disable a port that doesn't exist */
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p = rtnl_dereference(mrp->i_port);
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if (!p)
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return -EINVAL;
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/* Stop the generating MRP_InTest frames */
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cancel_delayed_work_sync(&mrp->in_test_work);
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br_mrp_switchdev_send_in_test(br, mrp, 0, 0, 0);
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/* Remove the port */
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spin_lock_bh(&br->lock);
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state = netif_running(br->dev) ?
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BR_STATE_FORWARDING : BR_STATE_DISABLED;
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p->state = state;
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p->flags &= ~BR_MRP_AWARE;
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spin_unlock_bh(&br->lock);
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br_mrp_port_switchdev_set_state(p, state);
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rcu_assign_pointer(mrp->i_port, NULL);
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mrp->in_role = role->in_role;
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mrp->in_id = 0;
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return 0;
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}
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/* It is not possible to have the same port part of multiple rings */
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if (!br_mrp_unique_ifindex(br, role->i_ifindex))
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return -EINVAL;
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/* It is not allowed to set a different interconnect port if the mrp
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* instance has already one. First it needs to be disabled and after
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* that set the new port
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*/
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if (rcu_access_pointer(mrp->i_port))
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return -EINVAL;
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p = br_mrp_get_port(br, role->i_ifindex);
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spin_lock_bh(&br->lock);
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p->state = BR_STATE_FORWARDING;
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p->flags |= BR_MRP_AWARE;
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spin_unlock_bh(&br->lock);
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rcu_assign_pointer(mrp->i_port, p);
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mrp->in_role = role->in_role;
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mrp->in_id = role->in_id;
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/* If there is an error just bailed out */
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err = br_mrp_switchdev_set_in_role(br, mrp, role->in_id,
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role->ring_id, role->in_role);
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if (err && err != -EOPNOTSUPP)
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return err;
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/* Now detect if the HW actually applied the role or not. If the HW
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* applied the role it means that the SW will not to do those operations
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* anymore. For example if the role is MIM then the HW will notify the
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* SW when interconnect ring is open, but if the is not pushed to the HW
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* the SW will need to detect when the interconnect ring is open.
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*/
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mrp->in_role_offloaded = err == -EOPNOTSUPP ? 0 : 1;
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return 0;
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}
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/* Start to generate MRP_InTest frames, the frames are generated by
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* HW and if it fails, they are generated by the SW.
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* note: already called with rtnl_lock
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*/
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int br_mrp_start_in_test(struct net_bridge *br,
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struct br_mrp_start_in_test *in_test)
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{
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struct br_mrp *mrp = br_mrp_find_in_id(br, in_test->in_id);
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if (!mrp)
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return -EINVAL;
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if (mrp->in_role != BR_MRP_IN_ROLE_MIM)
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return -EINVAL;
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/* Try to push it to the HW and if it fails then continue with SW
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* implementation and if that also fails then return error.
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*/
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if (!br_mrp_switchdev_send_in_test(br, mrp, in_test->interval,
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in_test->max_miss, in_test->period))
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return 0;
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mrp->in_test_interval = in_test->interval;
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mrp->in_test_end = jiffies + usecs_to_jiffies(in_test->period);
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mrp->in_test_max_miss = in_test->max_miss;
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mrp->in_test_count_miss = 0;
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queue_delayed_work(system_wq, &mrp->in_test_work,
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usecs_to_jiffies(in_test->interval));
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return 0;
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}
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/* Determin if the frame type is a ring frame */
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static bool br_mrp_ring_frame(struct sk_buff *skb)
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{
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const struct br_mrp_tlv_hdr *hdr;
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struct br_mrp_tlv_hdr _hdr;
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hdr = skb_header_pointer(skb, sizeof(uint16_t), sizeof(_hdr), &_hdr);
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if (!hdr)
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return false;
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if (hdr->type == BR_MRP_TLV_HEADER_RING_TEST ||
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hdr->type == BR_MRP_TLV_HEADER_RING_TOPO ||
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hdr->type == BR_MRP_TLV_HEADER_RING_LINK_DOWN ||
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hdr->type == BR_MRP_TLV_HEADER_RING_LINK_UP ||
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hdr->type == BR_MRP_TLV_HEADER_OPTION)
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return true;
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return false;
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}
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/* Determin if the frame type is an interconnect frame */
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static bool br_mrp_in_frame(struct sk_buff *skb)
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{
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const struct br_mrp_tlv_hdr *hdr;
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struct br_mrp_tlv_hdr _hdr;
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hdr = skb_header_pointer(skb, sizeof(uint16_t), sizeof(_hdr), &_hdr);
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if (!hdr)
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return false;
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if (hdr->type == BR_MRP_TLV_HEADER_IN_TEST ||
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hdr->type == BR_MRP_TLV_HEADER_IN_TOPO ||
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hdr->type == BR_MRP_TLV_HEADER_IN_LINK_DOWN ||
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hdr->type == BR_MRP_TLV_HEADER_IN_LINK_UP)
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return true;
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return false;
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}
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/* Process only MRP Test frame. All the other MRP frames are processed by
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* userspace application
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* note: already called with rcu_read_lock
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@ -591,17 +931,92 @@ static void br_mrp_mra_process(struct br_mrp *mrp, struct net_bridge *br,
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mrp->test_count_miss = 0;
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}
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/* This will just forward the frame to the other mrp ring port(MRC role) or will
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* not do anything.
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/* Process only MRP InTest frame. All the other MRP frames are processed by
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* userspace application
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* note: already called with rcu_read_lock
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*/
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static bool br_mrp_mim_process(struct br_mrp *mrp, struct net_bridge_port *port,
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struct sk_buff *skb)
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{
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const struct br_mrp_in_test_hdr *in_hdr;
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struct br_mrp_in_test_hdr _in_hdr;
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const struct br_mrp_tlv_hdr *hdr;
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struct br_mrp_tlv_hdr _hdr;
|
||||
|
||||
/* Each MRP header starts with a version field which is 16 bits.
|
||||
* Therefore skip the version and get directly the TLV header.
|
||||
*/
|
||||
hdr = skb_header_pointer(skb, sizeof(uint16_t), sizeof(_hdr), &_hdr);
|
||||
if (!hdr)
|
||||
return false;
|
||||
|
||||
/* The check for InTest frame type was already done */
|
||||
in_hdr = skb_header_pointer(skb, sizeof(uint16_t) + sizeof(_hdr),
|
||||
sizeof(_in_hdr), &_in_hdr);
|
||||
if (!in_hdr)
|
||||
return false;
|
||||
|
||||
/* It needs to process only it's own InTest frames. */
|
||||
if (mrp->in_id != ntohs(in_hdr->id))
|
||||
return false;
|
||||
|
||||
mrp->in_test_count_miss = 0;
|
||||
|
||||
/* Notify the userspace that the ring is closed only when the ring is
|
||||
* not closed
|
||||
*/
|
||||
if (mrp->in_state != BR_MRP_IN_STATE_CLOSED)
|
||||
br_mrp_in_port_open(port->dev, false);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/* Get the MRP frame type
|
||||
* note: already called with rcu_read_lock
|
||||
*/
|
||||
static u8 br_mrp_get_frame_type(struct sk_buff *skb)
|
||||
{
|
||||
const struct br_mrp_tlv_hdr *hdr;
|
||||
struct br_mrp_tlv_hdr _hdr;
|
||||
|
||||
/* Each MRP header starts with a version field which is 16 bits.
|
||||
* Therefore skip the version and get directly the TLV header.
|
||||
*/
|
||||
hdr = skb_header_pointer(skb, sizeof(uint16_t), sizeof(_hdr), &_hdr);
|
||||
if (!hdr)
|
||||
return 0xff;
|
||||
|
||||
return hdr->type;
|
||||
}
|
||||
|
||||
static bool br_mrp_mrm_behaviour(struct br_mrp *mrp)
|
||||
{
|
||||
if (mrp->ring_role == BR_MRP_RING_ROLE_MRM ||
|
||||
(mrp->ring_role == BR_MRP_RING_ROLE_MRA && !mrp->test_monitor))
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool br_mrp_mrc_behaviour(struct br_mrp *mrp)
|
||||
{
|
||||
if (mrp->ring_role == BR_MRP_RING_ROLE_MRC ||
|
||||
(mrp->ring_role == BR_MRP_RING_ROLE_MRA && mrp->test_monitor))
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
/* This will just forward the frame to the other mrp ring ports, depending on
|
||||
* the frame type, ring role and interconnect role
|
||||
* note: already called with rcu_read_lock
|
||||
*/
|
||||
static int br_mrp_rcv(struct net_bridge_port *p,
|
||||
struct sk_buff *skb, struct net_device *dev)
|
||||
{
|
||||
struct net_device *s_dev, *p_dev, *d_dev;
|
||||
struct net_bridge_port *p_port, *s_port;
|
||||
struct net_bridge_port *p_port, *s_port, *i_port = NULL;
|
||||
struct net_bridge_port *p_dst, *s_dst, *i_dst = NULL;
|
||||
struct net_bridge *br;
|
||||
struct sk_buff *nskb;
|
||||
struct br_mrp *mrp;
|
||||
|
||||
/* If port is disabled don't accept any frames */
|
||||
@ -616,46 +1031,139 @@ static int br_mrp_rcv(struct net_bridge_port *p,
|
||||
p_port = rcu_dereference(mrp->p_port);
|
||||
if (!p_port)
|
||||
return 0;
|
||||
p_dst = p_port;
|
||||
|
||||
s_port = rcu_dereference(mrp->s_port);
|
||||
if (!s_port)
|
||||
return 0;
|
||||
s_dst = s_port;
|
||||
|
||||
/* If the role is MRM then don't forward the frames */
|
||||
if (mrp->ring_role == BR_MRP_RING_ROLE_MRM) {
|
||||
br_mrp_mrm_process(mrp, p, skb);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* If the role is MRA then don't forward the frames if it behaves as
|
||||
* MRM node
|
||||
/* If the frame is a ring frame then it is not required to check the
|
||||
* interconnect role and ports to process or forward the frame
|
||||
*/
|
||||
if (mrp->ring_role == BR_MRP_RING_ROLE_MRA) {
|
||||
if (!mrp->test_monitor) {
|
||||
if (br_mrp_ring_frame(skb)) {
|
||||
/* If the role is MRM then don't forward the frames */
|
||||
if (mrp->ring_role == BR_MRP_RING_ROLE_MRM) {
|
||||
br_mrp_mrm_process(mrp, p, skb);
|
||||
return 1;
|
||||
goto no_forward;
|
||||
}
|
||||
|
||||
br_mrp_mra_process(mrp, br, p, skb);
|
||||
/* If the role is MRA then don't forward the frames if it
|
||||
* behaves as MRM node
|
||||
*/
|
||||
if (mrp->ring_role == BR_MRP_RING_ROLE_MRA) {
|
||||
if (!mrp->test_monitor) {
|
||||
br_mrp_mrm_process(mrp, p, skb);
|
||||
goto no_forward;
|
||||
}
|
||||
|
||||
br_mrp_mra_process(mrp, br, p, skb);
|
||||
}
|
||||
|
||||
goto forward;
|
||||
}
|
||||
|
||||
/* Clone the frame and forward it on the other MRP port */
|
||||
nskb = skb_clone(skb, GFP_ATOMIC);
|
||||
if (!nskb)
|
||||
return 0;
|
||||
if (br_mrp_in_frame(skb)) {
|
||||
u8 in_type = br_mrp_get_frame_type(skb);
|
||||
|
||||
p_dev = p_port->dev;
|
||||
s_dev = s_port->dev;
|
||||
i_port = rcu_dereference(mrp->i_port);
|
||||
i_dst = i_port;
|
||||
|
||||
if (p_dev == dev)
|
||||
d_dev = s_dev;
|
||||
else
|
||||
d_dev = p_dev;
|
||||
/* If the ring port is in block state it should not forward
|
||||
* In_Test frames
|
||||
*/
|
||||
if (br_mrp_is_ring_port(p_port, s_port, p) &&
|
||||
p->state == BR_STATE_BLOCKING &&
|
||||
in_type == BR_MRP_TLV_HEADER_IN_TEST)
|
||||
goto no_forward;
|
||||
|
||||
nskb->dev = d_dev;
|
||||
skb_push(nskb, ETH_HLEN);
|
||||
dev_queue_xmit(nskb);
|
||||
/* Nodes that behaves as MRM needs to stop forwarding the
|
||||
* frames in case the ring is closed, otherwise will be a loop.
|
||||
* In this case the frame is no forward between the ring ports.
|
||||
*/
|
||||
if (br_mrp_mrm_behaviour(mrp) &&
|
||||
br_mrp_is_ring_port(p_port, s_port, p) &&
|
||||
(s_port->state != BR_STATE_FORWARDING ||
|
||||
p_port->state != BR_STATE_FORWARDING)) {
|
||||
p_dst = NULL;
|
||||
s_dst = NULL;
|
||||
}
|
||||
|
||||
/* A node that behaves as MRC and doesn't have a interconnect
|
||||
* role then it should forward all frames between the ring ports
|
||||
* because it doesn't have an interconnect port
|
||||
*/
|
||||
if (br_mrp_mrc_behaviour(mrp) &&
|
||||
mrp->in_role == BR_MRP_IN_ROLE_DISABLED)
|
||||
goto forward;
|
||||
|
||||
if (mrp->in_role == BR_MRP_IN_ROLE_MIM) {
|
||||
if (in_type == BR_MRP_TLV_HEADER_IN_TEST) {
|
||||
/* MIM should not forward it's own InTest
|
||||
* frames
|
||||
*/
|
||||
if (br_mrp_mim_process(mrp, p, skb)) {
|
||||
goto no_forward;
|
||||
} else {
|
||||
if (br_mrp_is_ring_port(p_port, s_port,
|
||||
p))
|
||||
i_dst = NULL;
|
||||
|
||||
if (br_mrp_is_in_port(i_port, p))
|
||||
goto no_forward;
|
||||
}
|
||||
} else {
|
||||
/* MIM should forward IntLinkChange and
|
||||
* IntTopoChange between ring ports but MIM
|
||||
* should not forward IntLinkChange and
|
||||
* IntTopoChange if the frame was received at
|
||||
* the interconnect port
|
||||
*/
|
||||
if (br_mrp_is_ring_port(p_port, s_port, p))
|
||||
i_dst = NULL;
|
||||
|
||||
if (br_mrp_is_in_port(i_port, p))
|
||||
goto no_forward;
|
||||
}
|
||||
}
|
||||
|
||||
if (mrp->in_role == BR_MRP_IN_ROLE_MIC) {
|
||||
/* MIC should forward InTest frames on all ports
|
||||
* regardless of the received port
|
||||
*/
|
||||
if (in_type == BR_MRP_TLV_HEADER_IN_TEST)
|
||||
goto forward;
|
||||
|
||||
/* MIC should forward IntLinkChange frames only if they
|
||||
* are received on ring ports to all the ports
|
||||
*/
|
||||
if (br_mrp_is_ring_port(p_port, s_port, p) &&
|
||||
(in_type == BR_MRP_TLV_HEADER_IN_LINK_UP ||
|
||||
in_type == BR_MRP_TLV_HEADER_IN_LINK_DOWN))
|
||||
goto forward;
|
||||
|
||||
/* Should forward the InTopo frames only between the
|
||||
* ring ports
|
||||
*/
|
||||
if (in_type == BR_MRP_TLV_HEADER_IN_TOPO) {
|
||||
i_dst = NULL;
|
||||
goto forward;
|
||||
}
|
||||
|
||||
/* In all the other cases don't forward the frames */
|
||||
goto no_forward;
|
||||
}
|
||||
}
|
||||
|
||||
forward:
|
||||
if (p_dst)
|
||||
br_forward(p_dst, skb, true, false);
|
||||
if (s_dst)
|
||||
br_forward(s_dst, skb, true, false);
|
||||
if (i_dst)
|
||||
br_forward(i_dst, skb, true, false);
|
||||
|
||||
no_forward:
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
@ -57,6 +57,10 @@ int br_mrp_set_ring_state(struct net_bridge *br,
|
||||
struct br_mrp_ring_state *state);
|
||||
int br_mrp_set_ring_role(struct net_bridge *br, struct br_mrp_ring_role *role);
|
||||
int br_mrp_start_test(struct net_bridge *br, struct br_mrp_start_test *test);
|
||||
int br_mrp_set_in_state(struct net_bridge *br, struct br_mrp_in_state *state);
|
||||
int br_mrp_set_in_role(struct net_bridge *br, struct br_mrp_in_role *role);
|
||||
int br_mrp_start_in_test(struct net_bridge *br,
|
||||
struct br_mrp_start_in_test *test);
|
||||
|
||||
/* br_mrp_switchdev.c */
|
||||
int br_mrp_switchdev_add(struct net_bridge *br, struct br_mrp *mrp);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user