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openwrt/target/linux/generic/backport-5.4/707-v5.7-0011-net-dsa-bcm_s...

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From 7555020c44db75a0d934dffc0aa6c678b52b2a13 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Mon, 30 Mar 2020 14:38:53 -0700
Subject: [PATCH] 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>
---
drivers/net/dsa/bcm_sf2_cfp.c | 53 +++++++++++++++++++++++++----------
1 file changed, 38 insertions(+), 15 deletions(-)
--- a/drivers/net/dsa/bcm_sf2_cfp.c
+++ b/drivers/net/dsa/bcm_sf2_cfp.c
@@ -261,6 +261,7 @@ static int bcm_sf2_cfp_act_pol_set(struc
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(struc
* 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(str
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(str
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(str
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(struc
* 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(struc
*/
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 b
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(str
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(str
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(str
/* 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(str
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 d
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;
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