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dpaa2-eth: Update hash key composition code

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Introduce an internal id bitfield to uniquely identify header fields
supported by the Rx distribution keys. For the hash key, add a
conversion from the RXH_* bitmask provided by ethtool to the internal
ids.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ioana Ciocoi Radulescu 2019-04-16 17:13:29 +00:00 committed by David S. Miller
parent 61f9bf0011
commit 3a1e6b84ad
2 changed files with 30 additions and 2 deletions
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19
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
View File

@ -2571,10 +2571,12 @@ static const struct dpaa2_eth_dist_fields dist_fields[] = {
.rxnfc_field = RXH_L2DA,
.cls_prot = NET_PROT_ETH,
.cls_field = NH_FLD_ETH_DA,
.id = DPAA2_ETH_DIST_ETHDST,
.size = 6,
}, {
.cls_prot = NET_PROT_ETH,
.cls_field = NH_FLD_ETH_SA,
.id = DPAA2_ETH_DIST_ETHSRC,
.size = 6,
}, {
/* This is the last ethertype field parsed:
@ -2583,28 +2585,33 @@ static const struct dpaa2_eth_dist_fields dist_fields[] = {
*/
.cls_prot = NET_PROT_ETH,
.cls_field = NH_FLD_ETH_TYPE,
.id = DPAA2_ETH_DIST_ETHTYPE,
.size = 2,
}, {
/* VLAN header */
.rxnfc_field = RXH_VLAN,
.cls_prot = NET_PROT_VLAN,
.cls_field = NH_FLD_VLAN_TCI,
.id = DPAA2_ETH_DIST_VLAN,
.size = 2,
}, {
/* IP header */
.rxnfc_field = RXH_IP_SRC,
.cls_prot = NET_PROT_IP,
.cls_field = NH_FLD_IP_SRC,
.id = DPAA2_ETH_DIST_IPSRC,
.size = 4,
}, {
.rxnfc_field = RXH_IP_DST,
.cls_prot = NET_PROT_IP,
.cls_field = NH_FLD_IP_DST,
.id = DPAA2_ETH_DIST_IPDST,
.size = 4,
}, {
.rxnfc_field = RXH_L3_PROTO,
.cls_prot = NET_PROT_IP,
.cls_field = NH_FLD_IP_PROTO,
.id = DPAA2_ETH_DIST_IPPROTO,
.size = 1,
}, {
/* Using UDP ports, this is functionally equivalent to raw
@ -2613,11 +2620,13 @@ static const struct dpaa2_eth_dist_fields dist_fields[] = {
.rxnfc_field = RXH_L4_B_0_1,
.cls_prot = NET_PROT_UDP,
.cls_field = NH_FLD_UDP_PORT_SRC,
.id = DPAA2_ETH_DIST_L4SRC,
.size = 2,
}, {
.rxnfc_field = RXH_L4_B_2_3,
.cls_prot = NET_PROT_UDP,
.cls_field = NH_FLD_UDP_PORT_DST,
.id = DPAA2_ETH_DIST_L4DST,
.size = 2,
},
};
@ -2734,7 +2743,7 @@ static int dpaa2_eth_set_dist_key(struct net_device *net_dev,
* For Rx flow classification key we set all supported fields
*/
if (type == DPAA2_ETH_RX_DIST_HASH) {
if (!(flags & dist_fields[i].rxnfc_field))
if (!(flags & dist_fields[i].id))
continue;
rx_hash_fields |= dist_fields[i].rxnfc_field;
}
@ -2792,11 +2801,17 @@ static int dpaa2_eth_set_dist_key(struct net_device *net_dev,
int dpaa2_eth_set_hash(struct net_device *net_dev, u64 flags)
{
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
u64 key = 0;
int i;
if (!dpaa2_eth_hash_enabled(priv))
return -EOPNOTSUPP;
return dpaa2_eth_set_dist_key(net_dev, DPAA2_ETH_RX_DIST_HASH, flags);
for (i = 0; i < ARRAY_SIZE(dist_fields); i++)
if (dist_fields[i].rxnfc_field & flags)
key |= dist_fields[i].id;
return dpaa2_eth_set_dist_key(net_dev, DPAA2_ETH_RX_DIST_HASH, key);
}
static int dpaa2_eth_set_cls(struct dpaa2_eth_priv *priv)

13
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
View File

@ -342,6 +342,7 @@ struct dpaa2_eth_dist_fields {
enum net_prot cls_prot;
int cls_field;
int size;
u64 id;
};
struct dpaa2_eth_cls_rule {
@ -455,6 +456,18 @@ enum dpaa2_eth_rx_dist {
DPAA2_ETH_RX_DIST_CLS
};
/* Unique IDs for the supported Rx classification header fields */
#define DPAA2_ETH_DIST_ETHDST BIT(0)
#define DPAA2_ETH_DIST_ETHSRC BIT(1)
#define DPAA2_ETH_DIST_ETHTYPE BIT(2)
#define DPAA2_ETH_DIST_VLAN BIT(3)
#define DPAA2_ETH_DIST_IPSRC BIT(4)
#define DPAA2_ETH_DIST_IPDST BIT(5)
#define DPAA2_ETH_DIST_IPPROTO BIT(6)
#define DPAA2_ETH_DIST_L4SRC BIT(7)
#define DPAA2_ETH_DIST_L4DST BIT(8)
#define DPAA2_ETH_DIST_ALL (~0U)
static inline
unsigned int dpaa2_eth_needed_headroom(struct dpaa2_eth_priv *priv,
struct sk_buff *skb)