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From 0d1866b8c6f17a55207be651a3b3b93879fbdf1f Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Sat, 9 Nov 2019 15:02:49 +0200
Subject: [PATCH] net: mscc: ocelot: break out fdb operations into abstract
implementations
To be able to implement a DSA front-end over ocelot_fdb_add,
ocelot_fdb_del, ocelot_fdb_dump, these need to have a simple function
prototype that is independent of struct net_device, netlink skb, etc.
So rename the ndo ops of the ocelot driver into
ocelot_port_fdb_{add,del,dump}, and have them all call the abstract
implementations. At the same time, refactor ocelot_port_fdb_do_dump into
a function whose prototype is compatible with dsa_fdb_dump_cb_t, so that
the do_dump implementations can live together and be called by the
ocelot_fdb_dump through a function pointer.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/mscc/ocelot.c | 124 +++++++++++++++++++++++--------------
1 file changed, 78 insertions(+), 46 deletions(-)
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -21,6 +21,7 @@
#include <net/netevent.h>
#include <net/rtnetlink.h>
#include <net/switchdev.h>
+#include <net/dsa.h>
#include "ocelot.h"
#include "ocelot_ace.h"
@@ -814,21 +815,18 @@ static void ocelot_get_stats64(struct ne
stats->collisions = ocelot_read(ocelot, SYS_COUNT_TX_COLLISION);
}
-static int ocelot_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
- struct net_device *dev, const unsigned char *addr,
- u16 vid, u16 flags,
- struct netlink_ext_ack *extack)
+static int ocelot_fdb_add(struct ocelot *ocelot, int port,
+ const unsigned char *addr, u16 vid)
{
- struct ocelot_port *port = netdev_priv(dev);
- struct ocelot *ocelot = port->ocelot;
+ struct ocelot_port *ocelot_port = ocelot->ports[port];
if (!vid) {
- if (!port->vlan_aware)
+ if (!ocelot_port->vlan_aware)
/* If the bridge is not VLAN aware and no VID was
* provided, set it to pvid to ensure the MAC entry
* matches incoming untagged packets
*/
- vid = port->pvid;
+ vid = ocelot_port->pvid;
else
/* If the bridge is VLAN aware a VID must be provided as
* otherwise the learnt entry wouldn't match any frame.
@@ -836,20 +834,37 @@ static int ocelot_fdb_add(struct ndmsg *
return -EINVAL;
}
- return ocelot_mact_learn(ocelot, port->chip_port, addr, vid,
- ENTRYTYPE_LOCKED);
+ return ocelot_mact_learn(ocelot, port, addr, vid, ENTRYTYPE_LOCKED);
}
-static int ocelot_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
- struct net_device *dev,
- const unsigned char *addr, u16 vid)
+static int ocelot_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
+ struct net_device *dev,
+ const unsigned char *addr,
+ u16 vid, u16 flags,
+ struct netlink_ext_ack *extack)
{
- struct ocelot_port *port = netdev_priv(dev);
- struct ocelot *ocelot = port->ocelot;
+ struct ocelot_port *ocelot_port = netdev_priv(dev);
+ struct ocelot *ocelot = ocelot_port->ocelot;
+ return ocelot_fdb_add(ocelot, ocelot_port->chip_port, addr, vid);
+}
+
+static int ocelot_fdb_del(struct ocelot *ocelot, int port,
+ const unsigned char *addr, u16 vid)
+{
return ocelot_mact_forget(ocelot, addr, vid);
}
+static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
+ struct net_device *dev,
+ const unsigned char *addr, u16 vid)
+{
+ struct ocelot_port *ocelot_port = netdev_priv(dev);
+ struct ocelot *ocelot = ocelot_port->ocelot;
+
+ return ocelot_fdb_del(ocelot, ocelot_port->chip_port, addr, vid);
+}
+
struct ocelot_dump_ctx {
struct net_device *dev;
struct sk_buff *skb;
@@ -857,9 +872,10 @@ struct ocelot_dump_ctx {
int idx;
};
-static int ocelot_fdb_do_dump(struct ocelot_mact_entry *entry,
- struct ocelot_dump_ctx *dump)
+static int ocelot_port_fdb_do_dump(const unsigned char *addr, u16 vid,
+ bool is_static, void *data)
{
+ struct ocelot_dump_ctx *dump = data;
u32 portid = NETLINK_CB(dump->cb->skb).portid;
u32 seq = dump->cb->nlh->nlmsg_seq;
struct nlmsghdr *nlh;
@@ -880,12 +896,12 @@ static int ocelot_fdb_do_dump(struct oce
ndm->ndm_flags = NTF_SELF;
ndm->ndm_type = 0;
ndm->ndm_ifindex = dump->dev->ifindex;
- ndm->ndm_state = NUD_REACHABLE;
+ ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
- if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, entry->mac))
+ if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr))
goto nla_put_failure;
- if (entry->vid && nla_put_u16(dump->skb, NDA_VLAN, entry->vid))
+ if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid))
goto nla_put_failure;
nlmsg_end(dump->skb, nlh);
@@ -899,12 +915,11 @@ nla_put_failure:
return -EMSGSIZE;
}
-static inline int ocelot_mact_read(struct ocelot_port *port, int row, int col,
- struct ocelot_mact_entry *entry)
+static int ocelot_mact_read(struct ocelot *ocelot, int port, int row, int col,
+ struct ocelot_mact_entry *entry)
{
- struct ocelot *ocelot = port->ocelot;
- char mac[ETH_ALEN];
u32 val, dst, macl, mach;
+ char mac[ETH_ALEN];
/* Set row and column to read from */
ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_M_INDEX, row);
@@ -927,7 +942,7 @@ static inline int ocelot_mact_read(struc
* do not report it.
*/
dst = (val & ANA_TABLES_MACACCESS_DEST_IDX_M) >> 3;
- if (dst != port->chip_port)
+ if (dst != port)
return -EINVAL;
/* Get the entry's MAC address and VLAN id */
@@ -947,43 +962,60 @@ static inline int ocelot_mact_read(struc
return 0;
}
-static int ocelot_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
- struct net_device *dev,
- struct net_device *filter_dev, int *idx)
+static int ocelot_fdb_dump(struct ocelot *ocelot, int port,
+ dsa_fdb_dump_cb_t *cb, void *data)
{
- struct ocelot_port *port = netdev_priv(dev);
- int i, j, ret = 0;
- struct ocelot_dump_ctx dump = {
- .dev = dev,
- .skb = skb,
- .cb = cb,
- .idx = *idx,
- };
-
- struct ocelot_mact_entry entry;
+ int i, j;
/* Loop through all the mac tables entries. There are 1024 rows of 4
* entries.
*/
for (i = 0; i < 1024; i++) {
for (j = 0; j < 4; j++) {
- ret = ocelot_mact_read(port, i, j, &entry);
+ struct ocelot_mact_entry entry;
+ bool is_static;
+ int ret;
+
+ ret = ocelot_mact_read(ocelot, port, i, j, &entry);
/* If the entry is invalid (wrong port, invalid...),
* skip it.
*/
if (ret == -EINVAL)
continue;
else if (ret)
- goto end;
+ return ret;
+
+ is_static = (entry.type == ENTRYTYPE_LOCKED);
- ret = ocelot_fdb_do_dump(&entry, &dump);
+ ret = cb(entry.mac, entry.vid, is_static, data);
if (ret)
- goto end;
+ return ret;
}
}
-end:
+ return 0;
+}
+
+static int ocelot_port_fdb_dump(struct sk_buff *skb,
+ struct netlink_callback *cb,
+ struct net_device *dev,
+ struct net_device *filter_dev, int *idx)
+{
+ struct ocelot_port *ocelot_port = netdev_priv(dev);
+ struct ocelot *ocelot = ocelot_port->ocelot;
+ struct ocelot_dump_ctx dump = {
+ .dev = dev,
+ .skb = skb,
+ .cb = cb,
+ .idx = *idx,
+ };
+ int ret;
+
+ ret = ocelot_fdb_dump(ocelot, ocelot_port->chip_port,
+ ocelot_port_fdb_do_dump, &dump);
+
*idx = dump.idx;
+
return ret;
}
@@ -1129,9 +1161,9 @@ static const struct net_device_ops ocelo
.ndo_get_phys_port_name = ocelot_port_get_phys_port_name,
.ndo_set_mac_address = ocelot_port_set_mac_address,
.ndo_get_stats64 = ocelot_get_stats64,
- .ndo_fdb_add = ocelot_fdb_add,
- .ndo_fdb_del = ocelot_fdb_del,
- .ndo_fdb_dump = ocelot_fdb_dump,
+ .ndo_fdb_add = ocelot_port_fdb_add,
+ .ndo_fdb_del = ocelot_port_fdb_del,
+ .ndo_fdb_dump = ocelot_port_fdb_dump,
.ndo_vlan_rx_add_vid = ocelot_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = ocelot_vlan_rx_kill_vid,
.ndo_set_features = ocelot_set_features,
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