From f02bdffca29bc41e440ac67ffd47b56834d3bf85 Mon Sep 17 00:00:00 2001 From: Vivien Didelot Date: Sun, 11 Oct 2015 18:08:36 -0400 Subject: [PATCH] net: dsa: mv88e6xxx: do not support per-port FID Since we configure a switch chip through a Linux bridge, and a bridge is implemented as a VLAN, there is no need for per-port FID anymore. This patch gets rid of this and simplifies the driver code since we can now directly map all 4095 FIDs available to all VLANs. Signed-off-by: Vivien Didelot Signed-off-by: David S. Miller --- drivers/net/dsa/mv88e6xxx.c | 69 ++++++------------------------------- drivers/net/dsa/mv88e6xxx.h | 5 --- 2 files changed, 11 insertions(+), 63 deletions(-) diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c index 8d62bb344d43..b2b99f8ef29b 100644 --- a/drivers/net/dsa/mv88e6xxx.c +++ b/drivers/net/dsa/mv88e6xxx.c @@ -1468,6 +1468,7 @@ static int _mv88e6xxx_vlan_init(struct dsa_switch *ds, u16 vid, struct mv88e6xxx_vtu_stu_entry vlan = { .valid = true, .vid = vid, + .fid = vid, /* We use one FID per VLAN */ }; int i; @@ -1501,22 +1502,10 @@ static int _mv88e6xxx_vlan_init(struct dsa_switch *ds, u16 vid, return err; } - /* Non-bridged ports and bridge groups use FIDs from 1 to - * num_ports; VLANs use FIDs from num_ports+1 to 4095. - */ - vlan.fid = find_next_zero_bit(ps->fid_bitmap, VLAN_N_VID, - ps->num_ports + 1); - if (unlikely(vlan.fid == VLAN_N_VID)) { - pr_err("no more FID available for VLAN %d\n", vid); - return -ENOSPC; - } - /* Clear all MAC addresses from the new database */ err = _mv88e6xxx_atu_flush(ds, vlan.fid, true); if (err) return err; - - set_bit(vlan.fid, ps->fid_bitmap); } *entry = vlan; @@ -1556,7 +1545,6 @@ int mv88e6xxx_port_vlan_del(struct dsa_switch *ds, int port, u16 vid) { struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); struct mv88e6xxx_vtu_stu_entry vlan; - bool keep = false; int i, err; mutex_lock(&ps->smi_mutex); @@ -1574,28 +1562,22 @@ int mv88e6xxx_port_vlan_del(struct dsa_switch *ds, int port, u16 vid) vlan.data[port] = GLOBAL_VTU_DATA_MEMBER_TAG_NON_MEMBER; /* keep the VLAN unless all ports are excluded */ + vlan.valid = false; for (i = 0; i < ps->num_ports; ++i) { if (dsa_is_cpu_port(ds, i)) continue; if (vlan.data[i] != GLOBAL_VTU_DATA_MEMBER_TAG_NON_MEMBER) { - keep = true; + vlan.valid = true; break; } } - vlan.valid = keep; err = _mv88e6xxx_vtu_loadpurge(ds, &vlan); if (err) goto unlock; err = _mv88e6xxx_atu_remove(ds, vlan.fid, port, false); - if (err) - goto unlock; - - if (!keep) - clear_bit(vlan.fid, ps->fid_bitmap); - unlock: mutex_unlock(&ps->smi_mutex); @@ -1722,37 +1704,13 @@ static int _mv88e6xxx_atu_load(struct dsa_switch *ds, return _mv88e6xxx_atu_cmd(ds, GLOBAL_ATU_OP_LOAD_DB); } -static int _mv88e6xxx_port_vid_to_fid(struct dsa_switch *ds, int port, u16 vid) -{ - struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); - struct mv88e6xxx_vtu_stu_entry vlan; - int err; - - if (vid == 0) - return ps->fid[port]; - - err = _mv88e6xxx_port_vtu_getnext(ds, port, vid - 1, &vlan); - if (err) - return err; - - if (vlan.vid == vid) - return vlan.fid; - - return -ENOENT; -} - static int _mv88e6xxx_port_fdb_load(struct dsa_switch *ds, int port, const unsigned char *addr, u16 vid, u8 state) { struct mv88e6xxx_atu_entry entry = { 0 }; - int ret; - - ret = _mv88e6xxx_port_vid_to_fid(ds, port, vid); - if (ret < 0) - return ret; - entry.fid = ret; + entry.fid = vid; /* We use one FID per VLAN */ entry.state = state; ether_addr_copy(entry.mac, addr); if (state != GLOBAL_ATU_DATA_STATE_UNUSED) { @@ -1767,6 +1725,10 @@ int mv88e6xxx_port_fdb_prepare(struct dsa_switch *ds, int port, const struct switchdev_obj_port_fdb *fdb, struct switchdev_trans *trans) { + /* We don't use per-port FDB */ + if (fdb->vid == 0) + return -EOPNOTSUPP; + /* We don't need any dynamic resource from the kernel (yet), * so skip the prepare phase. */ @@ -1864,16 +1826,11 @@ int mv88e6xxx_port_fdb_getnext(struct dsa_switch *ds, int port, { struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); struct mv88e6xxx_atu_entry next; - u16 fid; + u16 fid = *vid; /* We use one FID per VLAN */ int ret; mutex_lock(&ps->smi_mutex); - ret = _mv88e6xxx_port_vid_to_fid(ds, port, *vid); - if (ret < 0) - goto unlock; - fid = ret; - do { if (is_broadcast_ether_addr(addr)) { struct mv88e6xxx_vtu_stu_entry vtu; @@ -1924,7 +1881,7 @@ static void mv88e6xxx_bridge_work(struct work_struct *work) static int mv88e6xxx_setup_port(struct dsa_switch *ds, int port) { struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); - int ret, fid; + int ret; u16 reg; mutex_lock(&ps->smi_mutex); @@ -2143,15 +2100,11 @@ static int mv88e6xxx_setup_port(struct dsa_switch *ds, int port) if (ret) goto abort; - /* Port based VLAN map: give each port its own address + /* Port based VLAN map: do not give each port its own address * database, allow the CPU port to talk to each of the 'real' * ports, and allow each of the 'real' ports to only talk to * the upstream port. */ - fid = port + 1; - ps->fid[port] = fid; - set_bit(fid, ps->fid_bitmap); - if (dsa_is_cpu_port(ds, port)) reg = BIT(ps->num_ports) - 1; else diff --git a/drivers/net/dsa/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx.h index 10387c2e999c..9b6104b94ce4 100644 --- a/drivers/net/dsa/mv88e6xxx.h +++ b/drivers/net/dsa/mv88e6xxx.h @@ -402,11 +402,6 @@ struct mv88e6xxx_priv_state { int id; /* switch product id */ int num_ports; /* number of switch ports */ - /* hw bridging */ - - DECLARE_BITMAP(fid_bitmap, VLAN_N_VID); /* FIDs 1 to 4095 available */ - u16 fid[DSA_MAX_PORTS]; /* per (non-bridged) port FID */ - unsigned long port_state_update_mask; u8 port_state[DSA_MAX_PORTS]; -- 2.20.1