From b1ac6fb440d6abf77ae82667b57126c6059c7bd6 Mon Sep 17 00:00:00 2001 From: Vivien Didelot Date: Thu, 1 Aug 2019 14:36:37 -0400 Subject: [PATCH] net: dsa: mv88e6xxx: call vtu_getnext directly in vlan_add Wrapping mv88e6xxx_vtu_getnext makes the code less easy to read and _mv88e6xxx_port_vlan_add is the only function requiring the preparation of a new VLAN entry. To simplify things up, remove the mv88e6xxx_vtu_get wrapper and explicit the VLAN lookup in _mv88e6xxx_port_vlan_add. This rework also avoids programming the broadcast entries again when changing a port's membership, e.g. from tagged to untagged. At the same time, rename the helper using an old underscore convention. Signed-off-by: Vivien Didelot Signed-off-by: David S. Miller --- drivers/net/dsa/mv88e6xxx/chip.c | 93 +++++++++++++++----------------- 1 file changed, 44 insertions(+), 49 deletions(-) diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index 50a6dbcc669c..b9dd5c4461b6 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -1401,43 +1401,6 @@ static int mv88e6xxx_atu_new(struct mv88e6xxx_chip *chip, u16 *fid) return mv88e6xxx_g1_atu_flush(chip, *fid, true); } -static int mv88e6xxx_vtu_get(struct mv88e6xxx_chip *chip, u16 vid, - struct mv88e6xxx_vtu_entry *entry, bool new) -{ - int err; - - if (!vid) - return -EOPNOTSUPP; - - entry->vid = vid - 1; - entry->valid = false; - - err = mv88e6xxx_vtu_getnext(chip, entry); - if (err) - return err; - - if (entry->vid == vid && entry->valid) - return 0; - - if (new) { - int i; - - /* Initialize a fresh VLAN entry */ - memset(entry, 0, sizeof(*entry)); - entry->vid = vid; - - /* Exclude all ports */ - for (i = 0; i < mv88e6xxx_num_ports(chip); ++i) - entry->member[i] = - MV88E6XXX_G1_VTU_DATA_MEMBER_TAG_NON_MEMBER; - - return mv88e6xxx_atu_new(chip, &entry->fid); - } - - /* switchdev expects -EOPNOTSUPP to honor software VLANs */ - return -EOPNOTSUPP; -} - static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port, u16 vid_begin, u16 vid_end) { @@ -1616,26 +1579,58 @@ static int mv88e6xxx_broadcast_setup(struct mv88e6xxx_chip *chip, u16 vid) return 0; } -static int _mv88e6xxx_port_vlan_add(struct mv88e6xxx_chip *chip, int port, +static int mv88e6xxx_port_vlan_join(struct mv88e6xxx_chip *chip, int port, u16 vid, u8 member) { + const u8 non_member = MV88E6XXX_G1_VTU_DATA_MEMBER_TAG_NON_MEMBER; struct mv88e6xxx_vtu_entry vlan; - int err; + int i, err; - err = mv88e6xxx_vtu_get(chip, vid, &vlan, true); - if (err) - return err; + if (!vid) + return -EOPNOTSUPP; - if (vlan.valid && vlan.member[port] == member) - return 0; - vlan.valid = true; - vlan.member[port] = member; + vlan.vid = vid - 1; + vlan.valid = false; - err = mv88e6xxx_vtu_loadpurge(chip, &vlan); + err = mv88e6xxx_vtu_getnext(chip, &vlan); if (err) return err; - return mv88e6xxx_broadcast_setup(chip, vid); + if (vlan.vid != vid || !vlan.valid) { + memset(&vlan, 0, sizeof(vlan)); + + err = mv88e6xxx_atu_new(chip, &vlan.fid); + if (err) + return err; + + for (i = 0; i < mv88e6xxx_num_ports(chip); ++i) + if (i == port) + vlan.member[i] = member; + else + vlan.member[i] = non_member; + + vlan.vid = vid; + vlan.valid = true; + + err = mv88e6xxx_vtu_loadpurge(chip, &vlan); + if (err) + return err; + + err = mv88e6xxx_broadcast_setup(chip, vlan.vid); + if (err) + return err; + } else if (vlan.member[port] != member) { + vlan.member[port] = member; + + err = mv88e6xxx_vtu_loadpurge(chip, &vlan); + if (err) + return err; + } else { + dev_info(chip->dev, "p%d: already a member of VLAN %d\n", + port, vid); + } + + return 0; } static void mv88e6xxx_port_vlan_add(struct dsa_switch *ds, int port, @@ -1660,7 +1655,7 @@ static void mv88e6xxx_port_vlan_add(struct dsa_switch *ds, int port, mv88e6xxx_reg_lock(chip); for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) - if (_mv88e6xxx_port_vlan_add(chip, port, vid, member)) + if (mv88e6xxx_port_vlan_join(chip, port, vid, member)) dev_err(ds->dev, "p%d: failed to add VLAN %d%c\n", port, vid, untagged ? 'u' : 't'); -- 2.30.2