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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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net: dsa: bcm_sf2: Add support for IPv6 CFP rules
Inserting IPv6 CFP rules complicates the code a little bit in that we need to insert two rules side by side and chain them to match a full IPv6 tuple (src, dst IPv6 + port + protocol). 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
David S. Miller
parent
4daa70cfb6
commit
ba0696c22e
@ -1067,6 +1067,7 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev)
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* permanently used
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*/
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set_bit(0, priv->cfp.used);
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set_bit(0, priv->cfp.unique);
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bcm_sf2_identify_ports(priv, dn->child);
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@ -54,6 +54,7 @@ struct bcm_sf2_cfp_priv {
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/* Mutex protecting concurrent accesses to the CFP registers */
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struct mutex lock;
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DECLARE_BITMAP(used, CFP_NUM_RULES);
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DECLARE_BITMAP(unique, CFP_NUM_RULES);
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unsigned int rules_cnt;
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};
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@ -57,6 +57,60 @@ static const struct cfp_udf_layout udf_tcpip4_layout = {
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},
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};
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/* UDF slices layout for a TCPv6/UDPv6 specification */
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static const struct cfp_udf_layout udf_tcpip6_layout = {
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.udfs = {
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[0] = {
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.slices = {
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/* End of L2, byte offset 8, src IP[0:15] */
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CFG_UDF_EOL2 | 4,
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/* End of L2, byte offset 10, src IP[16:31] */
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CFG_UDF_EOL2 | 5,
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/* End of L2, byte offset 12, src IP[32:47] */
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CFG_UDF_EOL2 | 6,
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/* End of L2, byte offset 14, src IP[48:63] */
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CFG_UDF_EOL2 | 7,
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/* End of L2, byte offset 16, src IP[64:79] */
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CFG_UDF_EOL2 | 8,
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/* End of L2, byte offset 18, src IP[80:95] */
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CFG_UDF_EOL2 | 9,
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/* End of L2, byte offset 20, src IP[96:111] */
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CFG_UDF_EOL2 | 10,
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/* End of L2, byte offset 22, src IP[112:127] */
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CFG_UDF_EOL2 | 11,
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/* End of L3, byte offset 0, src port */
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CFG_UDF_EOL3 | 0,
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},
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.mask_value = L3_FRAMING_MASK | IPPROTO_MASK | IP_FRAG,
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.base_offset = CORE_UDF_0_B_0_8_PORT_0,
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},
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[3] = {
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.slices = {
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/* End of L2, byte offset 24, dst IP[0:15] */
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CFG_UDF_EOL2 | 12,
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/* End of L2, byte offset 26, dst IP[16:31] */
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CFG_UDF_EOL2 | 13,
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/* End of L2, byte offset 28, dst IP[32:47] */
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CFG_UDF_EOL2 | 14,
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/* End of L2, byte offset 30, dst IP[48:63] */
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CFG_UDF_EOL2 | 15,
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/* End of L2, byte offset 32, dst IP[64:79] */
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CFG_UDF_EOL2 | 16,
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/* End of L2, byte offset 34, dst IP[80:95] */
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CFG_UDF_EOL2 | 17,
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/* End of L2, byte offset 36, dst IP[96:111] */
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CFG_UDF_EOL2 | 18,
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/* End of L2, byte offset 38, dst IP[112:127] */
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CFG_UDF_EOL2 | 19,
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/* End of L3, byte offset 2, dst port */
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CFG_UDF_EOL3 | 1,
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},
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.mask_value = L3_FRAMING_MASK | IPPROTO_MASK | IP_FRAG,
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.base_offset = CORE_UDF_0_D_0_11_PORT_0,
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},
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},
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};
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static inline unsigned int bcm_sf2_get_num_udf_slices(const u8 *layout)
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{
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unsigned int i, count = 0;
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@ -153,7 +207,8 @@ static inline unsigned int bcm_sf2_cfp_rule_size(struct bcm_sf2_priv *priv)
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static int bcm_sf2_cfp_act_pol_set(struct bcm_sf2_priv *priv,
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unsigned int rule_index,
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unsigned int port_num,
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unsigned int queue_num)
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unsigned int queue_num,
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bool fwd_map_change)
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{
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int ret;
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u32 reg;
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@ -161,14 +216,17 @@ static int bcm_sf2_cfp_act_pol_set(struct bcm_sf2_priv *priv,
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/* Replace ARL derived destination with DST_MAP derived, define
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* which port and queue this should be forwarded to.
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*/
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reg = CHANGE_FWRD_MAP_IB_REP_ARL | BIT(port_num + DST_MAP_IB_SHIFT) |
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CHANGE_TC | queue_num << NEW_TC_SHIFT;
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if (fwd_map_change)
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reg = CHANGE_FWRD_MAP_IB_REP_ARL |
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BIT(port_num + DST_MAP_IB_SHIFT) |
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CHANGE_TC | queue_num << NEW_TC_SHIFT;
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else
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reg = 0;
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core_writel(priv, reg, CORE_ACT_POL_DATA0);
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/* Set classification ID that needs to be put in Broadcom tag */
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core_writel(priv, rule_index << CHAIN_ID_SHIFT,
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CORE_ACT_POL_DATA1);
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core_writel(priv, rule_index << CHAIN_ID_SHIFT, CORE_ACT_POL_DATA1);
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core_writel(priv, 0, CORE_ACT_POL_DATA2);
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@ -337,7 +395,8 @@ static int bcm_sf2_cfp_ipv4_rule_set(struct bcm_sf2_priv *priv, int port,
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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, queue_num);
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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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@ -348,17 +407,280 @@ static int bcm_sf2_cfp_ipv4_rule_set(struct bcm_sf2_priv *priv, int port,
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/* Flag the rule as being used and return it */
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set_bit(rule_index, priv->cfp.used);
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set_bit(rule_index, priv->cfp.unique);
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fs->location = rule_index;
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return 0;
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}
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static void bcm_sf2_cfp_slice_ipv6(struct bcm_sf2_priv *priv,
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const __be32 *ip6_addr, const __be16 port,
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unsigned int slice_num)
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{
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u32 reg, tmp, val;
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/* C-Tag [31:24]
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* UDF_n_B8 [23:8] (port)
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* UDF_n_B7 (upper) [7:0] (addr[15:8])
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*/
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reg = be32_to_cpu(ip6_addr[3]);
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val = (u32)be16_to_cpu(port) << 8 | ((reg >> 8) & 0xff);
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core_writel(priv, val, CORE_CFP_DATA_PORT(4));
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/* UDF_n_B7 (lower) [31:24] (addr[7:0])
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* UDF_n_B6 [23:8] (addr[31:16])
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* UDF_n_B5 (upper) [7:0] (addr[47:40])
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*/
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tmp = be32_to_cpu(ip6_addr[2]);
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val = (u32)(reg & 0xff) << 24 | (u32)(reg >> 16) << 8 |
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((tmp >> 8) & 0xff);
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core_writel(priv, val, CORE_CFP_DATA_PORT(3));
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/* UDF_n_B5 (lower) [31:24] (addr[39:32])
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* UDF_n_B4 [23:8] (addr[63:48])
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* UDF_n_B3 (upper) [7:0] (addr[79:72])
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*/
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reg = be32_to_cpu(ip6_addr[1]);
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val = (u32)(tmp & 0xff) << 24 | (u32)(tmp >> 16) << 8 |
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((reg >> 8) & 0xff);
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core_writel(priv, val, CORE_CFP_DATA_PORT(2));
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/* UDF_n_B3 (lower) [31:24] (addr[71:64])
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* UDF_n_B2 [23:8] (addr[95:80])
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* UDF_n_B1 (upper) [7:0] (addr[111:104])
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*/
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tmp = be32_to_cpu(ip6_addr[0]);
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val = (u32)(reg & 0xff) << 24 | (u32)(reg >> 16) << 8 |
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((tmp >> 8) & 0xff);
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core_writel(priv, val, CORE_CFP_DATA_PORT(1));
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/* UDF_n_B1 (lower) [31:24] (addr[103:96])
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* UDF_n_B0 [23:8] (addr[127:112])
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* Reserved [7:4]
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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)(tmp & 0xff) << 24 | (u32)(tmp >> 16) << 8 |
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SLICE_NUM(slice_num) | SLICE_VALID;
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core_writel(priv, reg, CORE_CFP_DATA_PORT(0));
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/* All other UDFs should be matched with the filter */
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core_writel(priv, 0x00ffffff, CORE_CFP_MASK_PORT(4));
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core_writel(priv, 0xffffffff, CORE_CFP_MASK_PORT(3));
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core_writel(priv, 0xffffffff, CORE_CFP_MASK_PORT(2));
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core_writel(priv, 0xffffffff, CORE_CFP_MASK_PORT(1));
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core_writel(priv, 0xffffff0f, CORE_CFP_MASK_PORT(0));
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}
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static int bcm_sf2_cfp_ipv6_rule_set(struct bcm_sf2_priv *priv, int port,
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unsigned int port_num,
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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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unsigned int slice_num, rule_index[2];
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struct ethtool_tcpip6_spec *v6_spec;
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const struct cfp_udf_layout *layout;
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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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u32 reg;
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switch (fs->flow_type & ~FLOW_EXT) {
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case TCP_V6_FLOW:
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ip_proto = IPPROTO_TCP;
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v6_spec = &fs->h_u.tcp_ip6_spec;
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break;
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case UDP_V6_FLOW:
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ip_proto = IPPROTO_UDP;
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v6_spec = &fs->h_u.udp_ip6_spec;
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break;
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default:
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return -EINVAL;
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}
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ip_frag = be32_to_cpu(fs->m_ext.data[0]);
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layout = &udf_tcpip6_layout;
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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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num_udf = bcm_sf2_get_num_udf_slices(layout->udfs[slice_num].slices);
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/* Negotiate two indexes, one for the second half which we are chained
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* from, which is what we will return to user-space, and a second one
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* which is used to store its first half. That first half does not
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* allow any choice of placement, so it just needs to find the next
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* available bit. We return the second half as fs->location because
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* that helps with the rule lookup later on since the second half is
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* chained from its first half, we can easily identify IPv6 CFP rules
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* by looking whether they carry a CHAIN_ID.
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*
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* We also want the second half to have a lower rule_index than its
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* first half because the HW search is by incrementing addresses.
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*/
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if (fs->location == RX_CLS_LOC_ANY)
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rule_index[0] = find_first_zero_bit(priv->cfp.used,
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bcm_sf2_cfp_rule_size(priv));
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else
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rule_index[0] = fs->location;
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/* Flag it as used (cleared on error path) such that we can immediately
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* obtain a second one to chain from.
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*/
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set_bit(rule_index[0], priv->cfp.used);
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rule_index[1] = find_first_zero_bit(priv->cfp.used,
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bcm_sf2_cfp_rule_size(priv));
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if (rule_index[1] > bcm_sf2_cfp_rule_size(priv)) {
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ret = -ENOSPC;
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goto out_err;
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}
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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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/* Apply to all packets received through this port */
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core_writel(priv, BIT(port), CORE_CFP_DATA_PORT(7));
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/* Source port map match */
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core_writel(priv, 0xff, CORE_CFP_MASK_PORT(7));
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/* S-Tag status [31:30]
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* C-Tag status [29:28]
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* L2 framing [27:26]
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* L3 framing [25:24]
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* IP ToS [23:16]
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* IP proto [15:08]
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* IP Fragm [7]
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* Non 1st frag [6]
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* IP Authen [5]
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* TTL range [4:3]
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* PPPoE session [2]
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* Reserved [1]
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* UDF_Valid[8] [0]
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*/
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reg = 1 << L3_FRAMING_SHIFT | ip_proto << IPPROTO_SHIFT |
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ip_frag << IP_FRAG_SHIFT | udf_upper_bits(num_udf);
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core_writel(priv, reg, CORE_CFP_DATA_PORT(6));
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/* Mask with the specific layout for IPv6 packets including
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* UDF_Valid[8]
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*/
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reg = layout->udfs[slice_num].mask_value | udf_upper_bits(num_udf);
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core_writel(priv, reg, CORE_CFP_MASK_PORT(6));
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/* UDF_Valid[7:0] [31:24]
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* S-Tag [23:8]
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* C-Tag [7:0]
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*/
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core_writel(priv, udf_lower_bits(num_udf) << 24, CORE_CFP_DATA_PORT(5));
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/* Mask all but valid UDFs */
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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, slice_num);
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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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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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}
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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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/* 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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}
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num_udf = bcm_sf2_get_num_udf_slices(layout->udfs[slice_num].slices);
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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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/* Chained rule, source port match is coming from the rule we are
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* chained from.
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*/
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core_writel(priv, 0, CORE_CFP_DATA_PORT(7));
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core_writel(priv, 0, CORE_CFP_MASK_PORT(7));
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/*
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* CHAIN ID [31:24] chain to previous slice
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* Reserved [23:20]
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* UDF_Valid[11:8] [19:16]
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* UDF_Valid[7:0] [15:8]
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* UDF_n_D11 [7:0]
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*/
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reg = rule_index[0] << 24 | udf_upper_bits(num_udf) << 16 |
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udf_lower_bits(num_udf) << 8;
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core_writel(priv, reg, CORE_CFP_DATA_PORT(6));
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/* Mask all except chain ID, UDF Valid[8] and UDF Valid[7:0] */
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reg = XCESS_ADDR_MASK << 24 | udf_upper_bits(num_udf) << 16 |
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udf_lower_bits(num_udf) << 8;
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core_writel(priv, reg, CORE_CFP_MASK_PORT(6));
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/* Don't care */
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core_writel(priv, 0, CORE_CFP_DATA_PORT(5));
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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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/* Insert into TCAM now */
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bcm_sf2_cfp_rule_addr_set(priv, rule_index[1]);
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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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}
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/* Insert into Action and policer RAMs now, set chain ID to
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* the one we are chained to
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*/
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ret = bcm_sf2_cfp_act_pol_set(priv, rule_index[0], 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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/* Turn on CFP for this rule now */
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reg = core_readl(priv, CORE_CFP_CTL_REG);
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reg |= BIT(port);
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core_writel(priv, reg, CORE_CFP_CTL_REG);
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/* Flag the second half rule as being used now, return it as the
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* location, and flag it as unique while dumping rules
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*/
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set_bit(rule_index[1], priv->cfp.used);
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set_bit(rule_index[1], priv->cfp.unique);
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fs->location = rule_index[1];
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return ret;
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out_err:
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clear_bit(rule_index[0], priv->cfp.used);
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return ret;
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}
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static int bcm_sf2_cfp_rule_set(struct dsa_switch *ds, int port,
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struct ethtool_rx_flow_spec *fs)
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{
|
||||
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
|
||||
unsigned int queue_num, port_num;
|
||||
int ret;
|
||||
int ret = -EINVAL;
|
||||
|
||||
/* Check for unsupported extensions */
|
||||
if ((fs->flow_type & FLOW_EXT) && (fs->m_ext.vlan_etype ||
|
||||
@ -391,15 +713,26 @@ static int bcm_sf2_cfp_rule_set(struct dsa_switch *ds, int port,
|
||||
if (port_num >= 7)
|
||||
port_num -= 1;
|
||||
|
||||
ret = bcm_sf2_cfp_ipv4_rule_set(priv, port, port_num, queue_num, fs);
|
||||
if (ret)
|
||||
return ret;
|
||||
switch (fs->flow_type & ~FLOW_EXT) {
|
||||
case TCP_V4_FLOW:
|
||||
case UDP_V4_FLOW:
|
||||
ret = bcm_sf2_cfp_ipv4_rule_set(priv, port, port_num,
|
||||
queue_num, fs);
|
||||
break;
|
||||
case TCP_V6_FLOW:
|
||||
case UDP_V6_FLOW:
|
||||
ret = bcm_sf2_cfp_ipv6_rule_set(priv, port, port_num,
|
||||
queue_num, fs);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return 0;
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int bcm_sf2_cfp_rule_del(struct bcm_sf2_priv *priv, int port,
|
||||
u32 loc)
|
||||
static int bcm_sf2_cfp_rule_del_one(struct bcm_sf2_priv *priv, int port,
|
||||
u32 loc, u32 *next_loc)
|
||||
{
|
||||
int ret;
|
||||
u32 reg;
|
||||
@ -415,6 +748,14 @@ static int bcm_sf2_cfp_rule_del(struct bcm_sf2_priv *priv, int port,
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Check if this is possibly an IPv6 rule that would
|
||||
* indicate we need to delete its companion rule
|
||||
* as well
|
||||
*/
|
||||
reg = core_readl(priv, CORE_CFP_DATA_PORT(6));
|
||||
if (next_loc)
|
||||
*next_loc = (reg >> 24) & CHAIN_ID_MASK;
|
||||
|
||||
/* Clear its valid bits */
|
||||
reg = core_readl(priv, CORE_CFP_DATA_PORT(0));
|
||||
reg &= ~SLICE_VALID;
|
||||
@ -426,10 +767,28 @@ static int bcm_sf2_cfp_rule_del(struct bcm_sf2_priv *priv, int port,
|
||||
return ret;
|
||||
|
||||
clear_bit(loc, priv->cfp.used);
|
||||
clear_bit(loc, priv->cfp.unique);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bcm_sf2_cfp_rule_del(struct bcm_sf2_priv *priv, int port,
|
||||
u32 loc)
|
||||
{
|
||||
u32 next_loc = 0;
|
||||
int ret;
|
||||
|
||||
ret = bcm_sf2_cfp_rule_del_one(priv, port, loc, &next_loc);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* If this was an IPv6 rule, delete is companion rule too */
|
||||
if (next_loc)
|
||||
ret = bcm_sf2_cfp_rule_del_one(priv, port, next_loc, NULL);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void bcm_sf2_invert_masks(struct ethtool_rx_flow_spec *flow)
|
||||
{
|
||||
unsigned int i;
|
||||
@ -444,12 +803,32 @@ static void bcm_sf2_invert_masks(struct ethtool_rx_flow_spec *flow)
|
||||
}
|
||||
|
||||
static int bcm_sf2_cfp_ipv4_rule_get(struct bcm_sf2_priv *priv, int port,
|
||||
struct ethtool_tcpip4_spec *v4_spec,
|
||||
struct ethtool_tcpip4_spec *v4_m_spec)
|
||||
struct ethtool_rx_flow_spec *fs)
|
||||
{
|
||||
struct ethtool_tcpip4_spec *v4_spec = NULL, *v4_m_spec = NULL;
|
||||
u16 src_dst_port;
|
||||
u32 reg, ipv4;
|
||||
|
||||
reg = core_readl(priv, CORE_CFP_DATA_PORT(6));
|
||||
|
||||
switch ((reg & IPPROTO_MASK) >> IPPROTO_SHIFT) {
|
||||
case IPPROTO_TCP:
|
||||
fs->flow_type = TCP_V4_FLOW;
|
||||
v4_spec = &fs->h_u.tcp_ip4_spec;
|
||||
v4_m_spec = &fs->m_u.tcp_ip4_spec;
|
||||
break;
|
||||
case IPPROTO_UDP:
|
||||
fs->flow_type = UDP_V4_FLOW;
|
||||
v4_spec = &fs->h_u.udp_ip4_spec;
|
||||
v4_m_spec = &fs->m_u.udp_ip4_spec;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
fs->m_ext.data[0] = cpu_to_be32((reg >> IP_FRAG_SHIFT) & 1);
|
||||
v4_spec->tos = (reg >> IPTOS_SHIFT) & IPTOS_MASK;
|
||||
|
||||
reg = core_readl(priv, CORE_CFP_DATA_PORT(3));
|
||||
/* src port [15:8] */
|
||||
src_dst_port = reg << 8;
|
||||
@ -490,12 +869,128 @@ static int bcm_sf2_cfp_ipv4_rule_get(struct bcm_sf2_priv *priv, int port,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bcm_sf2_cfp_unslice_ipv6(struct bcm_sf2_priv *priv,
|
||||
__be32 *ip6_addr, __be16 *port,
|
||||
__be32 *ip6_mask, __be16 *port_mask)
|
||||
{
|
||||
u32 reg, tmp;
|
||||
|
||||
/* C-Tag [31:24]
|
||||
* UDF_n_B8 [23:8] (port)
|
||||
* UDF_n_B7 (upper) [7:0] (addr[15:8])
|
||||
*/
|
||||
reg = core_readl(priv, CORE_CFP_DATA_PORT(4));
|
||||
*port = cpu_to_be32(reg) >> 8;
|
||||
*port_mask = cpu_to_be16(~0);
|
||||
tmp = (u32)(reg & 0xff) << 8;
|
||||
|
||||
/* UDF_n_B7 (lower) [31:24] (addr[7:0])
|
||||
* UDF_n_B6 [23:8] (addr[31:16])
|
||||
* UDF_n_B5 (upper) [7:0] (addr[47:40])
|
||||
*/
|
||||
reg = core_readl(priv, CORE_CFP_DATA_PORT(3));
|
||||
tmp |= (reg >> 24) & 0xff;
|
||||
tmp |= (u32)((reg >> 8) << 16);
|
||||
ip6_mask[3] = cpu_to_be32(~0);
|
||||
ip6_addr[3] = cpu_to_be32(tmp);
|
||||
tmp = (u32)(reg & 0xff) << 8;
|
||||
|
||||
/* UDF_n_B5 (lower) [31:24] (addr[39:32])
|
||||
* UDF_n_B4 [23:8] (addr[63:48])
|
||||
* UDF_n_B3 (upper) [7:0] (addr[79:72])
|
||||
*/
|
||||
reg = core_readl(priv, CORE_CFP_DATA_PORT(2));
|
||||
tmp |= (reg >> 24) & 0xff;
|
||||
tmp |= (u32)((reg >> 8) << 16);
|
||||
ip6_mask[2] = cpu_to_be32(~0);
|
||||
ip6_addr[2] = cpu_to_be32(tmp);
|
||||
tmp = (u32)(reg & 0xff) << 8;
|
||||
|
||||
/* UDF_n_B3 (lower) [31:24] (addr[71:64])
|
||||
* UDF_n_B2 [23:8] (addr[95:80])
|
||||
* UDF_n_B1 (upper) [7:0] (addr[111:104])
|
||||
*/
|
||||
reg = core_readl(priv, CORE_CFP_DATA_PORT(1));
|
||||
tmp |= (reg >> 24) & 0xff;
|
||||
tmp |= (u32)((reg >> 8) << 16);
|
||||
ip6_mask[1] = cpu_to_be32(~0);
|
||||
ip6_addr[1] = cpu_to_be32(tmp);
|
||||
tmp = (u32)(reg & 0xff) << 8;
|
||||
|
||||
/* UDF_n_B1 (lower) [31:24] (addr[103:96])
|
||||
* UDF_n_B0 [23:8] (addr[127:112])
|
||||
* Reserved [7:4]
|
||||
* Slice ID [3:2]
|
||||
* Slice valid [1:0]
|
||||
*/
|
||||
reg = core_readl(priv, CORE_CFP_DATA_PORT(0));
|
||||
tmp |= (reg >> 24) & 0xff;
|
||||
tmp |= (u32)((reg >> 8) << 16);
|
||||
ip6_mask[0] = cpu_to_be32(~0);
|
||||
ip6_addr[0] = cpu_to_be32(tmp);
|
||||
|
||||
if (!(reg & SLICE_VALID))
|
||||
return -EINVAL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bcm_sf2_cfp_ipv6_rule_get(struct bcm_sf2_priv *priv, int port,
|
||||
struct ethtool_rx_flow_spec *fs,
|
||||
u32 next_loc)
|
||||
{
|
||||
struct ethtool_tcpip6_spec *v6_spec = NULL, *v6_m_spec = NULL;
|
||||
u32 reg;
|
||||
int ret;
|
||||
|
||||
/* UDPv6 and TCPv6 both use ethtool_tcpip6_spec so we are fine
|
||||
* assuming tcp_ip6_spec here being an union.
|
||||
*/
|
||||
v6_spec = &fs->h_u.tcp_ip6_spec;
|
||||
v6_m_spec = &fs->m_u.tcp_ip6_spec;
|
||||
|
||||
/* Read the second half first */
|
||||
ret = bcm_sf2_cfp_unslice_ipv6(priv, v6_spec->ip6dst, &v6_spec->pdst,
|
||||
v6_m_spec->ip6dst, &v6_m_spec->pdst);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Read last to avoid next entry clobbering the results during search
|
||||
* operations. We would not have the port enabled for this rule, so
|
||||
* don't bother checking it.
|
||||
*/
|
||||
(void)core_readl(priv, CORE_CFP_DATA_PORT(7));
|
||||
|
||||
/* The slice number is valid, so read the rule we are chained from now
|
||||
* which is our first half.
|
||||
*/
|
||||
bcm_sf2_cfp_rule_addr_set(priv, next_loc);
|
||||
ret = bcm_sf2_cfp_op(priv, OP_SEL_READ | TCAM_SEL);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
reg = core_readl(priv, CORE_CFP_DATA_PORT(6));
|
||||
|
||||
switch ((reg & IPPROTO_MASK) >> IPPROTO_SHIFT) {
|
||||
case IPPROTO_TCP:
|
||||
fs->flow_type = TCP_V6_FLOW;
|
||||
break;
|
||||
case IPPROTO_UDP:
|
||||
fs->flow_type = UDP_V6_FLOW;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return bcm_sf2_cfp_unslice_ipv6(priv, v6_spec->ip6src, &v6_spec->psrc,
|
||||
v6_m_spec->ip6src, &v6_m_spec->psrc);
|
||||
}
|
||||
|
||||
static int bcm_sf2_cfp_rule_get(struct bcm_sf2_priv *priv, int port,
|
||||
struct ethtool_rxnfc *nfc)
|
||||
{
|
||||
struct ethtool_tcpip4_spec *v4_spec = NULL, *v4_m_spec;
|
||||
u32 reg, ipv4_or_chain_id;
|
||||
unsigned int queue_num;
|
||||
u32 reg;
|
||||
int ret;
|
||||
|
||||
bcm_sf2_cfp_rule_addr_set(priv, nfc->fs.location);
|
||||
@ -523,29 +1018,19 @@ static int bcm_sf2_cfp_rule_get(struct bcm_sf2_priv *priv, int port,
|
||||
queue_num = (reg >> NEW_TC_SHIFT) & NEW_TC_MASK;
|
||||
nfc->fs.ring_cookie += queue_num;
|
||||
|
||||
/* Extract the IP protocol */
|
||||
/* Extract the L3_FRAMING or CHAIN_ID */
|
||||
reg = core_readl(priv, CORE_CFP_DATA_PORT(6));
|
||||
switch ((reg & IPPROTO_MASK) >> IPPROTO_SHIFT) {
|
||||
case IPPROTO_TCP:
|
||||
nfc->fs.flow_type = TCP_V4_FLOW;
|
||||
v4_spec = &nfc->fs.h_u.tcp_ip4_spec;
|
||||
v4_m_spec = &nfc->fs.m_u.tcp_ip4_spec;
|
||||
break;
|
||||
case IPPROTO_UDP:
|
||||
nfc->fs.flow_type = UDP_V4_FLOW;
|
||||
v4_spec = &nfc->fs.h_u.udp_ip4_spec;
|
||||
v4_m_spec = &nfc->fs.m_u.udp_ip4_spec;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
nfc->fs.m_ext.data[0] = cpu_to_be32((reg >> IP_FRAG_SHIFT) & 1);
|
||||
if (v4_spec) {
|
||||
v4_spec->tos = (reg >> IPTOS_SHIFT) & IPTOS_MASK;
|
||||
ret = bcm_sf2_cfp_ipv4_rule_get(priv, port, v4_spec, v4_m_spec);
|
||||
}
|
||||
|
||||
/* With IPv6 rules this would contain a non-zero chain ID since
|
||||
* we reserve entry 0 and it cannot be used. So if we read 0 here
|
||||
* this means an IPv4 rule.
|
||||
*/
|
||||
ipv4_or_chain_id = (reg >> L3_FRAMING_SHIFT) & 0xff;
|
||||
if (ipv4_or_chain_id == 0)
|
||||
ret = bcm_sf2_cfp_ipv4_rule_get(priv, port, &nfc->fs);
|
||||
else
|
||||
ret = bcm_sf2_cfp_ipv6_rule_get(priv, port, &nfc->fs,
|
||||
ipv4_or_chain_id);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
@ -571,7 +1056,7 @@ static int bcm_sf2_cfp_rule_get_all(struct bcm_sf2_priv *priv,
|
||||
{
|
||||
unsigned int index = 1, rules_cnt = 0;
|
||||
|
||||
for_each_set_bit_from(index, priv->cfp.used, priv->num_cfp_rules) {
|
||||
for_each_set_bit_from(index, priv->cfp.unique, priv->num_cfp_rules) {
|
||||
rule_locs[rules_cnt] = index;
|
||||
rules_cnt++;
|
||||
}
|
||||
@ -594,7 +1079,7 @@ int bcm_sf2_get_rxnfc(struct dsa_switch *ds, int port,
|
||||
switch (nfc->cmd) {
|
||||
case ETHTOOL_GRXCLSRLCNT:
|
||||
/* Subtract the default, unusable rule */
|
||||
nfc->rule_cnt = bitmap_weight(priv->cfp.used,
|
||||
nfc->rule_cnt = bitmap_weight(priv->cfp.unique,
|
||||
priv->num_cfp_rules) - 1;
|
||||
/* We support specifying rule locations */
|
||||
nfc->data |= RX_CLS_LOC_SPECIAL;
|
||||
|
||||
@ -313,6 +313,7 @@ enum bcm_sf2_reg_offs {
|
||||
#define SLICE_VALID 3
|
||||
#define SLICE_NUM_SHIFT 2
|
||||
#define SLICE_NUM(x) ((x) << SLICE_NUM_SHIFT)
|
||||
#define SLICE_NUM_MASK 0xff
|
||||
|
||||
#define CORE_CFP_MASK_PORT_0 0x280c0
|
||||
|
||||
@ -408,6 +409,12 @@ enum bcm_sf2_reg_offs {
|
||||
#define CFG_UDF_EOL2 (2 << CFG_UDF_OFFSET_BASE_SHIFT)
|
||||
#define CFG_UDF_EOL3 (3 << CFG_UDF_OFFSET_BASE_SHIFT)
|
||||
|
||||
/* IPv6 slices */
|
||||
#define CORE_UDF_0_B_0_8_PORT_0 0x28500
|
||||
|
||||
/* IPv6 chained slices */
|
||||
#define CORE_UDF_0_D_0_11_PORT_0 0x28680
|
||||
|
||||
/* Number of slices for IPv4, IPv6 and non-IP */
|
||||
#define UDF_NUM_SLICES 4
|
||||
#define UDFS_PER_SLICE 9
|
||||
|
||||
Loading…
Reference in New Issue
Block a user