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net: dsa: bcm_sf2: Add support for ethtool::rxnfc

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Add support for configuring classification rules using the
ethtool::rxnfc API.  This is useful to program the switch's CFP/TCAM to
redirect specific packets to specific ports/queues for instance. For
now, we allow any kind of IPv4 5-tuple matching.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli
2017-01-30 09:48:43 -08:00
committed by David S. Miller
parent 853458087e
commit 7318166cac
4 changed files with 645 additions and 0 deletions
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drivers/net/dsa/Makefile
+1
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@@ -1,5 +1,6 @@
obj-$(CONFIG_NET_DSA_MV88E6060) += mv88e6060.o
obj-$(CONFIG_NET_DSA_BCM_SF2) += bcm_sf2.o
bcm_sf2-objs += bcm_sf2_cfp.o
obj-$(CONFIG_NET_DSA_QCA8K) += qca8k.o
obj-y += b53/
drivers/net/dsa/bcm_sf2.c
+14
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@@ -1045,6 +1045,8 @@ static const struct dsa_switch_ops bcm_sf2_ops = {
.port_fdb_dump = b53_fdb_dump,
.port_fdb_add = b53_fdb_add,
.port_fdb_del = b53_fdb_del,
.get_rxnfc = bcm_sf2_get_rxnfc,
.set_rxnfc = bcm_sf2_set_rxnfc,
};
struct bcm_sf2_of_data {
@@ -1168,6 +1170,12 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev)
spin_lock_init(&priv->indir_lock);
mutex_init(&priv->stats_mutex);
mutex_init(&priv->cfp.lock);
/* CFP rule #0 cannot be used for specific classifications, flag it as
* permanently used
*/
set_bit(0, priv->cfp.used);
bcm_sf2_identify_ports(priv, dn->child);
@@ -1197,6 +1205,12 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev)
return ret;
}
ret = bcm_sf2_cfp_rst(priv);
if (ret) {
pr_err("failed to reset CFP\n");
goto out_mdio;
}
/* Disable all interrupts and request them */
bcm_sf2_intr_disable(priv);
drivers/net/dsa/bcm_sf2.h
+17
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@@ -52,6 +52,13 @@ struct bcm_sf2_port_status {
struct ethtool_eee eee;
};
struct bcm_sf2_cfp_priv {
/* Mutex protecting concurrent accesses to the CFP registers */
struct mutex lock;
DECLARE_BITMAP(used, CFP_NUM_RULES);
unsigned int rules_cnt;
};
struct bcm_sf2_priv {
/* Base registers, keep those in order with BCM_SF2_REGS_NAME */
void __iomem *core;
@@ -103,6 +110,9 @@ struct bcm_sf2_priv {
/* Bitmask of ports needing BRCM tags */
unsigned int brcm_tag_mask;
/* CFP rules context */
struct bcm_sf2_cfp_priv cfp;
};
static inline struct bcm_sf2_priv *bcm_sf2_to_priv(struct dsa_switch *ds)
@@ -197,4 +207,11 @@ SF2_IO_MACRO(acb);
SWITCH_INTR_L2(0);
SWITCH_INTR_L2(1);
/* RXNFC */
int bcm_sf2_get_rxnfc(struct dsa_switch *ds, int port,
struct ethtool_rxnfc *nfc, u32 *rule_locs);
int bcm_sf2_set_rxnfc(struct dsa_switch *ds, int port,
struct ethtool_rxnfc *nfc);
int bcm_sf2_cfp_rst(struct bcm_sf2_priv *priv);
#endif /* __BCM_SF2_H */
drivers/net/dsa/bcm_sf2_cfp.c
+613
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