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net: dsa: bcm_sf2: Add support for matching VLAN TCI 

Update relevant code paths to support the programming and matching of
VLAN TCI, this is the only member of the ethtool_flow_ext that we can
match, the switch does not permit matching the VLAN Ethernet Type field.

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 2020-03-30 14:38:53 -07:00 committed by David S. Miller
parent c2d639d118
commit 7555020c44
1 changed files with 38 additions and 15 deletions
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53
drivers/net/dsa/bcm_sf2_cfp.c
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@ -261,6 +261,7 @@ static int bcm_sf2_cfp_act_pol_set(struct bcm_sf2_priv *priv,
static void bcm_sf2_cfp_slice_ipv4(struct bcm_sf2_priv *priv,
struct flow_dissector_key_ipv4_addrs *addrs,
struct flow_dissector_key_ports *ports,
const __be16 vlan_tci,
unsigned int slice_num, u8 num_udf,
bool mask)
{
@ -270,16 +271,17 @@ static void bcm_sf2_cfp_slice_ipv4(struct bcm_sf2_priv *priv,
* S-Tag [23:8]
* C-Tag [7:0]
*/
reg = udf_lower_bits(num_udf) << 24 | be16_to_cpu(vlan_tci) >> 8;
if (mask)
core_writel(priv, udf_lower_bits(num_udf) << 24, CORE_CFP_MASK_PORT(5));
core_writel(priv, reg, CORE_CFP_MASK_PORT(5));
else
core_writel(priv, udf_lower_bits(num_udf) << 24, CORE_CFP_DATA_PORT(5));
core_writel(priv, reg, CORE_CFP_DATA_PORT(5));
/* C-Tag [31:24]
* UDF_n_A8 [23:8]
* UDF_n_A7 [7:0]
*/
reg = 0;
reg = (u32)(be16_to_cpu(vlan_tci) & 0xff) << 24;
if (mask)
offset = CORE_CFP_MASK_PORT(4);
else
@ -345,6 +347,7 @@ static int bcm_sf2_cfp_ipv4_rule_set(struct bcm_sf2_priv *priv, int port,
struct ethtool_rx_flow_spec *fs)
{
struct ethtool_rx_flow_spec_input input = {};
__be16 vlan_tci = 0 , vlan_m_tci = 0xffff;
const struct cfp_udf_layout *layout;
unsigned int slice_num, rule_index;
struct ethtool_rx_flow_rule *flow;
@ -369,6 +372,12 @@ static int bcm_sf2_cfp_ipv4_rule_set(struct bcm_sf2_priv *priv, int port,
ip_frag = !!(be32_to_cpu(fs->h_ext.data[0]) & 1);
/* Extract VLAN TCI */
if (fs->flow_type & FLOW_EXT) {
vlan_tci = fs->h_ext.vlan_tci;
vlan_m_tci = fs->m_ext.vlan_tci;
}
/* Locate the first rule available */
if (fs->location == RX_CLS_LOC_ANY)
rule_index = find_first_zero_bit(priv->cfp.used,
@ -431,10 +440,10 @@ static int bcm_sf2_cfp_ipv4_rule_set(struct bcm_sf2_priv *priv, int port,
udf_upper_bits(num_udf), CORE_CFP_MASK_PORT(6));
/* Program the match and the mask */
bcm_sf2_cfp_slice_ipv4(priv, ipv4.key, ports.key, slice_num,
num_udf, false);
bcm_sf2_cfp_slice_ipv4(priv, ipv4.mask, ports.mask, SLICE_NUM_MASK,
num_udf, true);
bcm_sf2_cfp_slice_ipv4(priv, ipv4.key, ports.key, vlan_tci,
slice_num, num_udf, false);
bcm_sf2_cfp_slice_ipv4(priv, ipv4.mask, ports.mask, vlan_m_tci,
SLICE_NUM_MASK, num_udf, true);
/* Insert into TCAM now */
bcm_sf2_cfp_rule_addr_set(priv, rule_index);
@ -470,6 +479,7 @@ out_err_flow_rule:
static void bcm_sf2_cfp_slice_ipv6(struct bcm_sf2_priv *priv,
const __be32 *ip6_addr, const __be16 port,
const __be16 vlan_tci,
unsigned int slice_num, u32 udf_bits,
bool mask)
{
@ -479,10 +489,11 @@ static void bcm_sf2_cfp_slice_ipv6(struct bcm_sf2_priv *priv,
* S-Tag [23:8]
* C-Tag [7:0]
*/
reg = udf_bits << 24 | be16_to_cpu(vlan_tci) >> 8;
if (mask)
core_writel(priv, udf_bits << 24, CORE_CFP_MASK_PORT(5));
core_writel(priv, reg, CORE_CFP_MASK_PORT(5));
else
core_writel(priv, udf_bits << 24, CORE_CFP_DATA_PORT(5));
core_writel(priv, reg, CORE_CFP_DATA_PORT(5));
/* C-Tag [31:24]
* UDF_n_B8 [23:8] (port)
@ -490,6 +501,7 @@ static void bcm_sf2_cfp_slice_ipv6(struct bcm_sf2_priv *priv,
*/
reg = be32_to_cpu(ip6_addr[3]);
val = (u32)be16_to_cpu(port) << 8 | ((reg >> 8) & 0xff);
val |= (u32)(be16_to_cpu(vlan_tci) & 0xff) << 24;
if (mask)
offset = CORE_CFP_MASK_PORT(4);
else
@ -598,6 +610,11 @@ static int bcm_sf2_cfp_rule_cmp(struct bcm_sf2_priv *priv, int port,
ret = memcmp(&rule->fs.h_u, &fs->h_u, fs_size);
ret |= memcmp(&rule->fs.m_u, &fs->m_u, fs_size);
/* Compare VLAN TCI values as well */
if (rule->fs.flow_type & FLOW_EXT) {
ret |= rule->fs.h_ext.vlan_tci != fs->h_ext.vlan_tci;
ret |= rule->fs.m_ext.vlan_tci != fs->m_ext.vlan_tci;
}
if (ret == 0)
break;
}
@ -611,6 +628,7 @@ static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
struct ethtool_rx_flow_spec *fs)
{
struct ethtool_rx_flow_spec_input input = {};
__be16 vlan_tci = 0, vlan_m_tci = 0xffff;
unsigned int slice_num, rule_index[2];
const struct cfp_udf_layout *layout;
struct ethtool_rx_flow_rule *flow;
@ -634,6 +652,12 @@ static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
ip_frag = !!(be32_to_cpu(fs->h_ext.data[0]) & 1);
/* Extract VLAN TCI */
if (fs->flow_type & FLOW_EXT) {
vlan_tci = fs->h_ext.vlan_tci;
vlan_m_tci = fs->m_ext.vlan_tci;
}
layout = &udf_tcpip6_layout;
slice_num = bcm_sf2_get_slice_number(layout, 0);
if (slice_num == UDF_NUM_SLICES)
@ -717,10 +741,10 @@ static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
/* Slice the IPv6 source address and port */
bcm_sf2_cfp_slice_ipv6(priv, ipv6.key->src.in6_u.u6_addr32,
ports.key->src, slice_num,
ports.key->src, vlan_tci, slice_num,
udf_lower_bits(num_udf), false);
bcm_sf2_cfp_slice_ipv6(priv, ipv6.mask->src.in6_u.u6_addr32,
ports.mask->src, SLICE_NUM_MASK,
ports.mask->src, vlan_m_tci, SLICE_NUM_MASK,
udf_lower_bits(num_udf), true);
/* Insert into TCAM now because we need to insert a second rule */
@ -773,10 +797,10 @@ static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
core_writel(priv, reg, CORE_CFP_MASK_PORT(6));
bcm_sf2_cfp_slice_ipv6(priv, ipv6.key->dst.in6_u.u6_addr32,
ports.key->dst, slice_num,
ports.key->dst, 0, slice_num,
0, false);
bcm_sf2_cfp_slice_ipv6(priv, ipv6.mask->dst.in6_u.u6_addr32,
ports.key->dst, SLICE_NUM_MASK,
ports.key->dst, 0, SLICE_NUM_MASK,
0, true);
/* Insert into TCAM now */
@ -878,8 +902,7 @@ static int bcm_sf2_cfp_rule_set(struct dsa_switch *ds, int port,
int ret = -EINVAL;
/* Check for unsupported extensions */
if ((fs->flow_type & FLOW_EXT) ||
(fs->flow_type & FLOW_MAC_EXT) ||
if ((fs->flow_type & FLOW_MAC_EXT) ||
fs->m_ext.data[1])
return -EINVAL;