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dsa: bcm_sf2: use flow_rule infrastructure
Update this driver to use the flow_rule infrastructure, hence we can use the same code to populate hardware IR from ethtool_rx_flow and the cls_flower interfaces. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pablo Neira Ayuso
David S. Miller
parent
eca4205f9e
commit
e4f7ef54cb
@ -16,6 +16,7 @@
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#include <linux/netdevice.h>
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#include <net/dsa.h>
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#include <linux/bitmap.h>
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#include <net/flow_offload.h>
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#include "bcm_sf2.h"
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#include "bcm_sf2_regs.h"
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@ -257,7 +258,8 @@ static int bcm_sf2_cfp_act_pol_set(struct bcm_sf2_priv *priv,
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}
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static void bcm_sf2_cfp_slice_ipv4(struct bcm_sf2_priv *priv,
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struct ethtool_tcpip4_spec *v4_spec,
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struct flow_dissector_key_ipv4_addrs *addrs,
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struct flow_dissector_key_ports *ports,
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unsigned int slice_num,
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bool mask)
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{
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@ -278,7 +280,7 @@ static void bcm_sf2_cfp_slice_ipv4(struct bcm_sf2_priv *priv,
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* UDF_n_A6 [23:8]
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* UDF_n_A5 [7:0]
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*/
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reg = be16_to_cpu(v4_spec->pdst) >> 8;
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reg = be16_to_cpu(ports->dst) >> 8;
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if (mask)
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offset = CORE_CFP_MASK_PORT(3);
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else
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@ -289,9 +291,9 @@ static void bcm_sf2_cfp_slice_ipv4(struct bcm_sf2_priv *priv,
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* UDF_n_A4 [23:8]
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* UDF_n_A3 [7:0]
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*/
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reg = (be16_to_cpu(v4_spec->pdst) & 0xff) << 24 |
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(u32)be16_to_cpu(v4_spec->psrc) << 8 |
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(be32_to_cpu(v4_spec->ip4dst) & 0x0000ff00) >> 8;
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reg = (be16_to_cpu(ports->dst) & 0xff) << 24 |
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(u32)be16_to_cpu(ports->src) << 8 |
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(be32_to_cpu(addrs->dst) & 0x0000ff00) >> 8;
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if (mask)
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offset = CORE_CFP_MASK_PORT(2);
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else
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@ -302,9 +304,9 @@ static void bcm_sf2_cfp_slice_ipv4(struct bcm_sf2_priv *priv,
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* UDF_n_A2 [23:8]
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* UDF_n_A1 [7:0]
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*/
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reg = (u32)(be32_to_cpu(v4_spec->ip4dst) & 0xff) << 24 |
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(u32)(be32_to_cpu(v4_spec->ip4dst) >> 16) << 8 |
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(be32_to_cpu(v4_spec->ip4src) & 0x0000ff00) >> 8;
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reg = (u32)(be32_to_cpu(addrs->dst) & 0xff) << 24 |
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(u32)(be32_to_cpu(addrs->dst) >> 16) << 8 |
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(be32_to_cpu(addrs->src) & 0x0000ff00) >> 8;
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if (mask)
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offset = CORE_CFP_MASK_PORT(1);
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else
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@ -317,8 +319,8 @@ static void bcm_sf2_cfp_slice_ipv4(struct bcm_sf2_priv *priv,
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* Slice ID [3:2]
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* Slice valid [1:0]
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*/
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reg = (u32)(be32_to_cpu(v4_spec->ip4src) & 0xff) << 24 |
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(u32)(be32_to_cpu(v4_spec->ip4src) >> 16) << 8 |
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reg = (u32)(be32_to_cpu(addrs->src) & 0xff) << 24 |
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(u32)(be32_to_cpu(addrs->src) >> 16) << 8 |
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SLICE_NUM(slice_num) | SLICE_VALID;
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if (mask)
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offset = CORE_CFP_MASK_PORT(0);
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@ -332,9 +334,13 @@ static int bcm_sf2_cfp_ipv4_rule_set(struct bcm_sf2_priv *priv, int port,
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unsigned int queue_num,
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struct ethtool_rx_flow_spec *fs)
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{
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struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec;
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struct ethtool_rx_flow_spec_input input = {};
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const struct cfp_udf_layout *layout;
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unsigned int slice_num, rule_index;
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struct ethtool_rx_flow_rule *flow;
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struct flow_match_ipv4_addrs ipv4;
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struct flow_match_ports ports;
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struct flow_match_ip ip;
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u8 ip_proto, ip_frag;
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u8 num_udf;
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u32 reg;
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@ -343,13 +349,9 @@ static int bcm_sf2_cfp_ipv4_rule_set(struct bcm_sf2_priv *priv, int port,
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switch (fs->flow_type & ~FLOW_EXT) {
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case TCP_V4_FLOW:
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ip_proto = IPPROTO_TCP;
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v4_spec = &fs->h_u.tcp_ip4_spec;
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v4_m_spec = &fs->m_u.tcp_ip4_spec;
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break;
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case UDP_V4_FLOW:
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ip_proto = IPPROTO_UDP;
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v4_spec = &fs->h_u.udp_ip4_spec;
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v4_m_spec = &fs->m_u.udp_ip4_spec;
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break;
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default:
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return -EINVAL;
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@ -367,11 +369,22 @@ static int bcm_sf2_cfp_ipv4_rule_set(struct bcm_sf2_priv *priv, int port,
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if (rule_index > bcm_sf2_cfp_rule_size(priv))
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return -ENOSPC;
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input.fs = fs;
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flow = ethtool_rx_flow_rule_create(&input);
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if (IS_ERR(flow))
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return PTR_ERR(flow);
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flow_rule_match_ipv4_addrs(flow->rule, &ipv4);
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flow_rule_match_ports(flow->rule, &ports);
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flow_rule_match_ip(flow->rule, &ip);
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layout = &udf_tcpip4_layout;
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/* We only use one UDF slice for now */
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slice_num = bcm_sf2_get_slice_number(layout, 0);
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if (slice_num == UDF_NUM_SLICES)
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return -EINVAL;
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if (slice_num == UDF_NUM_SLICES) {
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ret = -EINVAL;
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goto out_err_flow_rule;
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}
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num_udf = bcm_sf2_get_num_udf_slices(layout->udfs[slice_num].slices);
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@ -398,7 +411,7 @@ static int bcm_sf2_cfp_ipv4_rule_set(struct bcm_sf2_priv *priv, int port,
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* Reserved [1]
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* UDF_Valid[8] [0]
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*/
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core_writel(priv, v4_spec->tos << IPTOS_SHIFT |
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core_writel(priv, ip.key->tos << IPTOS_SHIFT |
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ip_proto << IPPROTO_SHIFT | ip_frag << IP_FRAG_SHIFT |
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udf_upper_bits(num_udf),
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CORE_CFP_DATA_PORT(6));
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@ -417,8 +430,8 @@ static int bcm_sf2_cfp_ipv4_rule_set(struct bcm_sf2_priv *priv, int port,
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core_writel(priv, udf_lower_bits(num_udf) << 24, CORE_CFP_MASK_PORT(5));
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/* Program the match and the mask */
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bcm_sf2_cfp_slice_ipv4(priv, v4_spec, slice_num, false);
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bcm_sf2_cfp_slice_ipv4(priv, v4_m_spec, SLICE_NUM_MASK, true);
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bcm_sf2_cfp_slice_ipv4(priv, ipv4.key, ports.key, slice_num, false);
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bcm_sf2_cfp_slice_ipv4(priv, ipv4.mask, ports.mask, SLICE_NUM_MASK, true);
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/* Insert into TCAM now */
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bcm_sf2_cfp_rule_addr_set(priv, rule_index);
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@ -426,14 +439,14 @@ static int bcm_sf2_cfp_ipv4_rule_set(struct bcm_sf2_priv *priv, int port,
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ret = bcm_sf2_cfp_op(priv, OP_SEL_WRITE | TCAM_SEL);
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if (ret) {
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pr_err("TCAM entry at addr %d failed\n", rule_index);
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return ret;
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goto out_err_flow_rule;
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}
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/* Insert into Action and policer RAMs now */
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ret = bcm_sf2_cfp_act_pol_set(priv, rule_index, port_num,
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queue_num, true);
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if (ret)
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return ret;
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goto out_err_flow_rule;
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/* Turn on CFP for this rule now */
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reg = core_readl(priv, CORE_CFP_CTL_REG);
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@ -446,6 +459,10 @@ static int bcm_sf2_cfp_ipv4_rule_set(struct bcm_sf2_priv *priv, int port,
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fs->location = rule_index;
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return 0;
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out_err_flow_rule:
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ethtool_rx_flow_rule_destroy(flow);
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return ret;
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}
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static void bcm_sf2_cfp_slice_ipv6(struct bcm_sf2_priv *priv,
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@ -582,8 +599,12 @@ static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
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struct ethtool_rx_flow_spec *fs)
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{
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struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec;
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struct ethtool_rx_flow_spec_input input = {};
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unsigned int slice_num, rule_index[2];
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const struct cfp_udf_layout *layout;
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struct ethtool_rx_flow_rule *flow;
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struct flow_match_ipv6_addrs ipv6;
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struct flow_match_ports ports;
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u8 ip_proto, ip_frag;
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int ret = 0;
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u8 num_udf;
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@ -645,6 +666,15 @@ static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
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goto out_err;
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}
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input.fs = fs;
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flow = ethtool_rx_flow_rule_create(&input);
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if (IS_ERR(flow)) {
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ret = PTR_ERR(flow);
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goto out_err;
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}
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flow_rule_match_ipv6_addrs(flow->rule, &ipv6);
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flow_rule_match_ports(flow->rule, &ports);
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/* Apply the UDF layout for this filter */
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bcm_sf2_cfp_udf_set(priv, layout, slice_num);
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@ -688,10 +718,10 @@ static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
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core_writel(priv, udf_lower_bits(num_udf) << 24, CORE_CFP_MASK_PORT(5));
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/* Slice the IPv6 source address and port */
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bcm_sf2_cfp_slice_ipv6(priv, v6_spec->ip6src, v6_spec->psrc,
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slice_num, false);
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bcm_sf2_cfp_slice_ipv6(priv, v6_m_spec->ip6src, v6_m_spec->psrc,
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SLICE_NUM_MASK, true);
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bcm_sf2_cfp_slice_ipv6(priv, ipv6.key->src.in6_u.u6_addr32,
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ports.key->src, slice_num, false);
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bcm_sf2_cfp_slice_ipv6(priv, ipv6.mask->src.in6_u.u6_addr32,
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ports.mask->src, SLICE_NUM_MASK, true);
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/* Insert into TCAM now because we need to insert a second rule */
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bcm_sf2_cfp_rule_addr_set(priv, rule_index[0]);
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@ -699,20 +729,20 @@ static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
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ret = bcm_sf2_cfp_op(priv, OP_SEL_WRITE | TCAM_SEL);
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if (ret) {
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pr_err("TCAM entry at addr %d failed\n", rule_index[0]);
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goto out_err;
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goto out_err_flow_rule;
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}
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/* Insert into Action and policer RAMs now */
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ret = bcm_sf2_cfp_act_pol_set(priv, rule_index[0], port_num,
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queue_num, false);
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if (ret)
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goto out_err;
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goto out_err_flow_rule;
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/* Now deal with the second slice to chain this rule */
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slice_num = bcm_sf2_get_slice_number(layout, slice_num + 1);
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if (slice_num == UDF_NUM_SLICES) {
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ret = -EINVAL;
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goto out_err;
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goto out_err_flow_rule;
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}
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num_udf = bcm_sf2_get_num_udf_slices(layout->udfs[slice_num].slices);
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@ -748,10 +778,10 @@ static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
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/* Mask all */
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core_writel(priv, 0, CORE_CFP_MASK_PORT(5));
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bcm_sf2_cfp_slice_ipv6(priv, v6_spec->ip6dst, v6_spec->pdst, slice_num,
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false);
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bcm_sf2_cfp_slice_ipv6(priv, v6_m_spec->ip6dst, v6_m_spec->pdst,
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SLICE_NUM_MASK, true);
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bcm_sf2_cfp_slice_ipv6(priv, ipv6.key->dst.in6_u.u6_addr32,
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ports.key->dst, slice_num, false);
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bcm_sf2_cfp_slice_ipv6(priv, ipv6.mask->dst.in6_u.u6_addr32,
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ports.key->dst, SLICE_NUM_MASK, true);
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/* Insert into TCAM now */
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bcm_sf2_cfp_rule_addr_set(priv, rule_index[1]);
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@ -759,7 +789,7 @@ static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
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ret = bcm_sf2_cfp_op(priv, OP_SEL_WRITE | TCAM_SEL);
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if (ret) {
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pr_err("TCAM entry at addr %d failed\n", rule_index[1]);
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goto out_err;
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goto out_err_flow_rule;
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}
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/* Insert into Action and policer RAMs now, set chain ID to
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@ -768,7 +798,7 @@ static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
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ret = bcm_sf2_cfp_act_pol_set(priv, rule_index[1], port_num,
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queue_num, true);
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if (ret)
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goto out_err;
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goto out_err_flow_rule;
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/* Turn on CFP for this rule now */
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reg = core_readl(priv, CORE_CFP_CTL_REG);
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@ -784,6 +814,8 @@ static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
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return ret;
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out_err_flow_rule:
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ethtool_rx_flow_rule_destroy(flow);
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out_err:
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clear_bit(rule_index[1], priv->cfp.used);
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return ret;
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