@@ -41,6 +41,7 @@ struct fbnic_dev {
u32 readrq;
/* Local copy of the devices TCAM */
+ struct fbnic_act_tcam act_tcam[FBNIC_RPC_TCAM_ACT_NUM_ENTRIES];
struct fbnic_mac_addr mac_addr[FBNIC_RPC_TCAM_MACDA_NUM_ENTRIES];
u8 mac_addr_boundary;
@@ -537,20 +537,79 @@ enum {
#define FBNIC_RPC_RMI_CONFIG_FCS_PRESENT CSR_BIT(8)
#define FBNIC_RPC_RMI_CONFIG_ENABLE CSR_BIT(12)
#define FBNIC_RPC_RMI_CONFIG_MTU CSR_GENMASK(31, 16)
+
+#define FBNIC_RPC_ACT_TBL0_DEFAULT 0x0840a /* 0x21028 */
+#define FBNIC_RPC_ACT_TBL0_DROP CSR_BIT(0)
+#define FBNIC_RPC_ACT_TBL0_DEST_MASK CSR_GENMASK(3, 1)
+enum {
+ FBNIC_RPC_ACT_TBL0_DEST_HOST = 1,
+ FBNIC_RPC_ACT_TBL0_DEST_BMC = 2,
+ FBNIC_RPC_ACT_TBL0_DEST_EI = 4,
+};
+
+#define FBNIC_RPC_ACT_TBL0_DMA_HINT CSR_GENMASK(24, 16)
+#define FBNIC_RPC_ACT_TBL0_RSS_CTXT_ID CSR_BIT(30)
+
+#define FBNIC_RPC_ACT_TBL1_DEFAULT 0x0840b /* 0x2102c */
+#define FBNIC_RPC_ACT_TBL1_RSS_ENA_MASK CSR_GENMASK(15, 0)
+enum {
+ FBNIC_RPC_ACT_TBL1_RSS_ENA_IP_SRC = 1,
+ FBNIC_RPC_ACT_TBL1_RSS_ENA_IP_DST = 2,
+ FBNIC_RPC_ACT_TBL1_RSS_ENA_L4_SRC = 4,
+ FBNIC_RPC_ACT_TBL1_RSS_ENA_L4_DST = 8,
+ FBNIC_RPC_ACT_TBL1_RSS_ENA_L2_DA = 16,
+ FBNIC_RPC_ACT_TBL1_RSS_ENA_L4_RSS_BYTE = 32,
+ FBNIC_RPC_ACT_TBL1_RSS_ENA_IV6_FL_LBL = 64,
+ FBNIC_RPC_ACT_TBL1_RSS_ENA_OV6_FL_LBL = 128,
+ FBNIC_RPC_ACT_TBL1_RSS_ENA_DSCP = 256,
+ FBNIC_RPC_ACT_TBL1_RSS_ENA_L3_PROT = 512,
+ FBNIC_RPC_ACT_TBL1_RSS_ENA_L4_PROT = 1024,
+};
+
+#define FBNIC_RPC_RSS_KEY(n) (0x0840c + (n)) /* 0x21030 + 4*n */
+#define FBNIC_RPC_RSS_KEY_BIT_LEN 425
+#define FBNIC_RPC_RSS_KEY_BYTE_LEN \
+ DIV_ROUND_UP(FBNIC_RPC_RSS_KEY_BIT_LEN, 8)
+#define FBNIC_RPC_RSS_KEY_DWORD_LEN \
+ DIV_ROUND_UP(FBNIC_RPC_RSS_KEY_BIT_LEN, 32)
+#define FBNIC_RPC_RSS_KEY_LAST_IDX \
+ (FBNIC_RPC_RSS_KEY_DWORD_LEN - 1)
+#define FBNIC_RPC_RSS_KEY_LAST_MASK \
+ CSR_GENMASK(31, \
+ FBNIC_RPC_RSS_KEY_DWORD_LEN * 32 - \
+ FBNIC_RPC_RSS_KEY_BIT_LEN)
+
#define FBNIC_RPC_TCAM_MACDA_VALIDATE 0x0852d /* 0x214b4 */
#define FBNIC_CSR_END_RPC 0x0856b /* CSR section delimiter */
/* RPC RAM Registers */
#define FBNIC_CSR_START_RPC_RAM 0x08800 /* CSR section delimiter */
+#define FBNIC_RPC_ACT_TBL0(n) (0x08800 + (n)) /* 0x22000 + 4*n */
+#define FBNIC_RPC_ACT_TBL1(n) (0x08840 + (n)) /* 0x22100 + 4*n */
#define FBNIC_RPC_ACT_TBL_NUM_ENTRIES 64
/* TCAM Tables */
#define FBNIC_RPC_TCAM_VALIDATE CSR_BIT(31)
+
+/* 64 Action TCAM Entries, 12 registers
+ * 3 mixed, src port, dst port, 6 L4 words, and Validate
+ */
+#define FBNIC_RPC_TCAM_ACT(m, n) \
+ (0x08880 + 0x40 * (n) + (m)) /* 0x22200 + 256*n + 4*m */
+
+#define FBNIC_RPC_TCAM_ACT_VALUE CSR_GENMASK(15, 0)
+#define FBNIC_RPC_TCAM_ACT_MASK CSR_GENMASK(31, 16)
+
#define FBNIC_RPC_TCAM_MACDA(m, n) \
(0x08b80 + 0x20 * (n) + (m)) /* 0x022e00 + 128*n + 4*m */
#define FBNIC_RPC_TCAM_MACDA_VALUE CSR_GENMASK(15, 0)
#define FBNIC_RPC_TCAM_MACDA_MASK CSR_GENMASK(31, 16)
+
+#define FBNIC_RPC_RSS_TBL(n, m) \
+ (0x08d20 + 0x100 * (n) + (m)) /* 0x023480 + 1024*n + 4*m */
+#define FBNIC_RPC_RSS_TBL_COUNT 2
+#define FBNIC_RPC_RSS_TBL_SIZE 256
#define FBNIC_CSR_END_RPC_RAM 0x08f1f /* CSR section delimiter */
/* Fab Registers */
@@ -50,6 +50,7 @@ int __fbnic_open(struct fbnic_net *fbn)
goto release_ownership;
/* Pull the BMC config and initialize the RPC */
fbnic_bmc_rpc_init(fbd);
+ fbnic_rss_reinit(fbd, fbn);
return 0;
release_ownership:
@@ -262,6 +263,7 @@ void __fbnic_set_rx_mode(struct net_device *netdev)
fbnic_sift_macda(fbd);
/* Write updates to hardware */
+ fbnic_write_rules(fbd);
fbnic_write_macda(fbd);
}
@@ -398,6 +400,10 @@ struct net_device *fbnic_netdev_alloc(struct fbnic_dev *fbd)
fbnic_reset_queues(fbn, default_queues, default_queues);
+ fbnic_reset_indir_tbl(fbn);
+ fbnic_rss_key_fill(fbn->rss_key);
+ fbnic_rss_init_en_mask(fbn);
+
netdev->features |=
NETIF_F_RXHASH |
NETIF_F_SG |
@@ -7,6 +7,8 @@
#include <linux/types.h>
#include <linux/phylink.h>
+#include "fbnic_csr.h"
+#include "fbnic_rpc.h"
#include "fbnic_txrx.h"
struct fbnic_net {
@@ -36,7 +38,12 @@ struct fbnic_net {
u16 num_tx_queues;
u16 num_rx_queues;
+ u8 indir_tbl[FBNIC_RPC_RSS_TBL_COUNT][FBNIC_RPC_RSS_TBL_SIZE];
+ u32 rss_key[FBNIC_RPC_RSS_KEY_DWORD_LEN];
+ u32 rss_flow_hash[FBNIC_NUM_HASH_OPT];
+
u64 link_down_events;
+
struct list_head napis;
};
@@ -133,6 +133,8 @@ void fbnic_up(struct fbnic_net *fbn)
fbnic_fill(fbn);
+ fbnic_rss_reinit_hw(fbn->fbd, fbn);
+
__fbnic_set_rx_mode(fbn->netdev);
/* Enable Tx/Rx processing */
@@ -151,6 +153,8 @@ static void fbnic_down_noidle(struct fbnic_net *fbn)
netif_tx_disable(fbn->netdev);
fbnic_clear_rx_mode(fbn->netdev);
+ fbnic_clear_rules(fbn->fbd);
+ fbnic_rss_disable_hw(fbn->fbd);
fbnic_disable(fbn);
}
@@ -2,11 +2,102 @@
/* Copyright (c) Meta Platforms, Inc. and affiliates. */
#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
#include "fbnic.h"
#include "fbnic_netdev.h"
#include "fbnic_rpc.h"
+void fbnic_reset_indir_tbl(struct fbnic_net *fbn)
+{
+ unsigned int num_rx = fbn->num_rx_queues;
+ unsigned int i;
+
+ for (i = 0; i < FBNIC_RPC_RSS_TBL_SIZE; i++) {
+ fbn->indir_tbl[0][i] = ethtool_rxfh_indir_default(i, num_rx);
+ fbn->indir_tbl[1][i] = ethtool_rxfh_indir_default(i, num_rx);
+ }
+}
+
+void fbnic_rss_key_fill(u32 *buffer)
+{
+ static u32 rss_key[FBNIC_RPC_RSS_KEY_DWORD_LEN];
+
+ net_get_random_once(rss_key, sizeof(rss_key));
+ rss_key[FBNIC_RPC_RSS_KEY_LAST_IDX] &= FBNIC_RPC_RSS_KEY_LAST_MASK;
+
+ memcpy(buffer, rss_key, sizeof(rss_key));
+}
+
+#define RX_HASH_OPT_L4 \
+ (RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3)
+#define RX_HASH_OPT_L3 \
+ (RXH_IP_SRC | RXH_IP_DST)
+#define RX_HASH_OPT_L2 RXH_L2DA
+
+void fbnic_rss_init_en_mask(struct fbnic_net *fbn)
+{
+ fbn->rss_flow_hash[FBNIC_TCP4_HASH_OPT] = RX_HASH_OPT_L4;
+ fbn->rss_flow_hash[FBNIC_TCP6_HASH_OPT] = RX_HASH_OPT_L4;
+
+ fbn->rss_flow_hash[FBNIC_UDP4_HASH_OPT] = RX_HASH_OPT_L3;
+ fbn->rss_flow_hash[FBNIC_UDP6_HASH_OPT] = RX_HASH_OPT_L3;
+ fbn->rss_flow_hash[FBNIC_IPV4_HASH_OPT] = RX_HASH_OPT_L3;
+ fbn->rss_flow_hash[FBNIC_IPV6_HASH_OPT] = RX_HASH_OPT_L3;
+
+ fbn->rss_flow_hash[FBNIC_ETHER_HASH_OPT] = RX_HASH_OPT_L2;
+}
+
+void fbnic_rss_disable_hw(struct fbnic_dev *fbd)
+{
+ /* Disable RPC by clearing enable bit and configuration */
+ if (!fbnic_bmc_present(fbd))
+ wr32(fbd, FBNIC_RPC_RMI_CONFIG,
+ FIELD_PREP(FBNIC_RPC_RMI_CONFIG_OH_BYTES, 20));
+}
+
+#define FBNIC_FH_2_RSSEM_BIT(_fh, _rssem, _val) \
+ FIELD_PREP(FBNIC_RPC_ACT_TBL1_RSS_ENA_##_rssem, \
+ FIELD_GET(RXH_##_fh, _val))
+static u16 fbnic_flow_hash_2_rss_en_mask(struct fbnic_net *fbn, int flow_type)
+{
+ u32 flow_hash = fbn->rss_flow_hash[flow_type];
+ u32 rss_en_mask = 0;
+
+ rss_en_mask |= FBNIC_FH_2_RSSEM_BIT(L2DA, L2_DA, flow_hash);
+ rss_en_mask |= FBNIC_FH_2_RSSEM_BIT(IP_SRC, IP_SRC, flow_hash);
+ rss_en_mask |= FBNIC_FH_2_RSSEM_BIT(IP_DST, IP_DST, flow_hash);
+ rss_en_mask |= FBNIC_FH_2_RSSEM_BIT(L4_B_0_1, L4_SRC, flow_hash);
+ rss_en_mask |= FBNIC_FH_2_RSSEM_BIT(L4_B_2_3, L4_DST, flow_hash);
+
+ return rss_en_mask;
+}
+
+void fbnic_rss_reinit_hw(struct fbnic_dev *fbd, struct fbnic_net *fbn)
+{
+ unsigned int i;
+
+ for (i = 0; i < FBNIC_RPC_RSS_TBL_SIZE; i++) {
+ wr32(fbd, FBNIC_RPC_RSS_TBL(0, i), fbn->indir_tbl[0][i]);
+ wr32(fbd, FBNIC_RPC_RSS_TBL(1, i), fbn->indir_tbl[1][i]);
+ }
+
+ for (i = 0; i < FBNIC_RPC_RSS_KEY_DWORD_LEN; i++)
+ wr32(fbd, FBNIC_RPC_RSS_KEY(i), fbn->rss_key[i]);
+
+ /* Default action for this to drop w/ no destination */
+ wr32(fbd, FBNIC_RPC_ACT_TBL0_DEFAULT, FBNIC_RPC_ACT_TBL0_DROP);
+ wrfl(fbd);
+
+ wr32(fbd, FBNIC_RPC_ACT_TBL1_DEFAULT, 0);
+
+ /* If it isn't already enabled set the RMI Config value to enable RPC */
+ wr32(fbd, FBNIC_RPC_RMI_CONFIG,
+ FIELD_PREP(FBNIC_RPC_RMI_CONFIG_MTU, FBNIC_MAX_JUMBO_FRAME_SIZE) |
+ FIELD_PREP(FBNIC_RPC_RMI_CONFIG_OH_BYTES, 20) |
+ FBNIC_RPC_RMI_CONFIG_ENABLE);
+}
+
static int fbnic_read_macda_entry(struct fbnic_dev *fbd, unsigned int idx,
struct fbnic_mac_addr *mac_addr)
{
@@ -30,7 +121,9 @@ static int fbnic_read_macda_entry(struct fbnic_dev *fbd, unsigned int idx,
void fbnic_bmc_rpc_all_multi_config(struct fbnic_dev *fbd,
bool enable_host)
{
+ struct fbnic_act_tcam *act_tcam;
struct fbnic_mac_addr *mac_addr;
+ int j;
/* We need to add the all multicast filter at the end of the
* multicast address list. This way if there are any that are
@@ -61,13 +154,51 @@ void fbnic_bmc_rpc_all_multi_config(struct fbnic_dev *fbd,
clear_bit(FBNIC_MAC_ADDR_T_BMC, mac_addr->act_tcam);
mac_addr->state = FBNIC_TCAM_S_DELETE;
}
+
+ /* We have to add a special handler for multicast as the
+ * BMC may have an all-multi rule already in place. As such
+ * adding a rule ourselves won't do any good so we will have
+ * to modify the rules for the ALL MULTI below if the BMC
+ * already has the rule in place.
+ */
+ act_tcam = &fbd->act_tcam[FBNIC_RPC_ACT_TBL_BMC_ALL_MULTI_OFFSET];
+
+ /* If we are not enabling the rule just delete it. We will fall
+ * back to the RSS rules that support the multicast addresses.
+ */
+ if (!fbnic_bmc_present(fbd) || !fbd->fw_cap.all_multi || enable_host) {
+ if (act_tcam->state == FBNIC_TCAM_S_VALID)
+ act_tcam->state = FBNIC_TCAM_S_DELETE;
+ return;
+ }
+
+ /* Rewrite TCAM rule 23 to handle BMC all-multi traffic */
+ act_tcam->dest = FIELD_PREP(FBNIC_RPC_ACT_TBL0_DEST_MASK,
+ FBNIC_RPC_ACT_TBL0_DEST_BMC);
+ act_tcam->mask.tcam[0] = 0xffff;
+
+ /* MACDA 0 - 3 is reserved for the BMC MAC address */
+ act_tcam->value.tcam[1] =
+ FIELD_PREP(FBNIC_RPC_TCAM_ACT1_L2_MACDA_IDX,
+ fbd->mac_addr_boundary - 1) |
+ FBNIC_RPC_TCAM_ACT1_L2_MACDA_VALID;
+ act_tcam->mask.tcam[1] = 0xffff &
+ ~FBNIC_RPC_TCAM_ACT1_L2_MACDA_IDX &
+ ~FBNIC_RPC_TCAM_ACT1_L2_MACDA_VALID;
+
+ for (j = 2; j < FBNIC_RPC_TCAM_ACT_WORD_LEN; j++)
+ act_tcam->mask.tcam[j] = 0xffff;
+
+ act_tcam->state = FBNIC_TCAM_S_UPDATE;
}
void fbnic_bmc_rpc_init(struct fbnic_dev *fbd)
{
int i = FBNIC_RPC_TCAM_MACDA_BMC_ADDR_IDX;
+ struct fbnic_act_tcam *act_tcam;
struct fbnic_mac_addr *mac_addr;
u32 macda_validate;
+ int j;
/* Verify that RPC is already enabled, if not abort */
macda_validate = rd32(fbd, FBNIC_RPC_TCAM_MACDA_VALIDATE);
@@ -140,11 +271,116 @@ void fbnic_bmc_rpc_init(struct fbnic_dev *fbd)
mac_addr->state = FBNIC_TCAM_S_VALID;
}
+ /* Rewrite TCAM rule 0 if it isn't present to relocate BMC rules */
+ act_tcam = &fbd->act_tcam[FBNIC_RPC_ACT_TBL_BMC_OFFSET];
+ act_tcam->dest = FIELD_PREP(FBNIC_RPC_ACT_TBL0_DEST_MASK,
+ FBNIC_RPC_ACT_TBL0_DEST_BMC);
+ act_tcam->mask.tcam[0] = 0xffff;
+
+ /* MACDA 0 - 3 is reserved for the BMC MAC address
+ * to account for that we have to mask out the lower 2 bits
+ * of the macda by performing an &= with 0x1c.
+ */
+ act_tcam->value.tcam[1] = FBNIC_RPC_TCAM_ACT1_L2_MACDA_VALID;
+ act_tcam->mask.tcam[1] = 0xffff &
+ ~FIELD_PREP(FBNIC_RPC_TCAM_ACT1_L2_MACDA_IDX, 0x1c) &
+ ~FBNIC_RPC_TCAM_ACT1_L2_MACDA_VALID;
+
+ for (j = 2; j < FBNIC_RPC_TCAM_ACT_WORD_LEN; j++)
+ act_tcam->mask.tcam[j] = 0xffff;
+
+ act_tcam->state = FBNIC_TCAM_S_UPDATE;
+
fbnic_bmc_rpc_all_multi_config(fbd, false);
fbnic_bmc_set_present(fbd, true);
}
+#define FBNIC_ACT1_INIT(_l4, _udp, _ip, _v6) \
+ (((_l4) ? FBNIC_RPC_TCAM_ACT1_L4_VALID : 0) | \
+ ((_udp) ? FBNIC_RPC_TCAM_ACT1_L4_IS_UDP : 0) | \
+ ((_ip) ? FBNIC_RPC_TCAM_ACT1_IP_VALID : 0) | \
+ ((_v6) ? FBNIC_RPC_TCAM_ACT1_IP_IS_V6 : 0))
+
+void fbnic_rss_reinit(struct fbnic_dev *fbd, struct fbnic_net *fbn)
+{
+ static const u32 act1_value[FBNIC_NUM_HASH_OPT] = {
+ FBNIC_ACT1_INIT(1, 1, 1, 1), /* UDP6 */
+ FBNIC_ACT1_INIT(1, 1, 1, 0), /* UDP4 */
+ FBNIC_ACT1_INIT(1, 0, 1, 1), /* TCP6 */
+ FBNIC_ACT1_INIT(1, 0, 1, 0), /* TCP4 */
+ FBNIC_ACT1_INIT(0, 0, 1, 1), /* IP6 */
+ FBNIC_ACT1_INIT(0, 0, 1, 0), /* IP4 */
+ 0 /* Ether */
+ };
+ unsigned int i;
+
+ /* To support scenarios where a BMC is present we must write the
+ * rules twice, once for the unicast cases, and once again for
+ * the broadcast/multicast cases as we have to support 2 destinations.
+ */
+ BUILD_BUG_ON(FBNIC_RSS_EN_NUM_UNICAST * 2 != FBNIC_RSS_EN_NUM_ENTRIES);
+ BUILD_BUG_ON(ARRAY_SIZE(act1_value) != FBNIC_NUM_HASH_OPT);
+
+ /* Program RSS hash enable mask for host in action TCAM/table. */
+ for (i = fbnic_bmc_present(fbd) ? 0 : FBNIC_RSS_EN_NUM_UNICAST;
+ i < FBNIC_RSS_EN_NUM_ENTRIES; i++) {
+ unsigned int idx = i + FBNIC_RPC_ACT_TBL_RSS_OFFSET;
+ struct fbnic_act_tcam *act_tcam = &fbd->act_tcam[idx];
+ u32 flow_hash, dest, rss_en_mask;
+ int flow_type, j;
+ u16 value = 0;
+
+ flow_type = i % FBNIC_RSS_EN_NUM_UNICAST;
+ flow_hash = fbn->rss_flow_hash[flow_type];
+
+ /* Set DEST_HOST based on absence of RXH_DISCARD */
+ dest = FIELD_PREP(FBNIC_RPC_ACT_TBL0_DEST_MASK,
+ !(RXH_DISCARD & flow_hash) ?
+ FBNIC_RPC_ACT_TBL0_DEST_HOST : 0);
+
+ if (i >= FBNIC_RSS_EN_NUM_UNICAST && fbnic_bmc_present(fbd))
+ dest |= FIELD_PREP(FBNIC_RPC_ACT_TBL0_DEST_MASK,
+ FBNIC_RPC_ACT_TBL0_DEST_BMC);
+
+ if (!dest)
+ dest = FBNIC_RPC_ACT_TBL0_DROP;
+
+ if (act1_value[flow_type] & FBNIC_RPC_TCAM_ACT1_L4_VALID)
+ dest |= FIELD_PREP(FBNIC_RPC_ACT_TBL0_DMA_HINT,
+ FBNIC_RCD_HDR_AL_DMA_HINT_L4);
+
+ rss_en_mask = fbnic_flow_hash_2_rss_en_mask(fbn, flow_type);
+
+ act_tcam->dest = dest;
+ act_tcam->rss_en_mask = rss_en_mask;
+ act_tcam->state = FBNIC_TCAM_S_UPDATE;
+
+ act_tcam->mask.tcam[0] = 0xffff;
+
+ /* We reserve the upper 8 MACDA TCAM entries for host
+ * unicast. So we set the value to 24, and the mask the
+ * lower bits so that the lower entries can be used as
+ * multicast or BMC addresses.
+ */
+ if (i < FBNIC_RSS_EN_NUM_UNICAST)
+ value = FIELD_PREP(FBNIC_RPC_TCAM_ACT1_L2_MACDA_IDX,
+ fbd->mac_addr_boundary);
+ value |= FBNIC_RPC_TCAM_ACT1_L2_MACDA_VALID;
+
+ flow_type = i % FBNIC_RSS_EN_NUM_UNICAST;
+ value |= act1_value[flow_type];
+
+ act_tcam->value.tcam[1] = value;
+ act_tcam->mask.tcam[1] = ~value;
+
+ for (j = 2; j < FBNIC_RPC_TCAM_ACT_WORD_LEN; j++)
+ act_tcam->mask.tcam[j] = 0xffff;
+
+ act_tcam->state = FBNIC_TCAM_S_UPDATE;
+ }
+}
+
struct fbnic_mac_addr *__fbnic_uc_sync(struct fbnic_dev *fbd,
const unsigned char *addr)
{
@@ -292,6 +528,38 @@ static void fbnic_clear_macda_entry(struct fbnic_dev *fbd, unsigned int idx)
wr32(fbd, FBNIC_RPC_TCAM_MACDA(idx, i), 0);
}
+static void fbnic_clear_macda(struct fbnic_dev *fbd)
+{
+ int idx;
+
+ for (idx = ARRAY_SIZE(fbd->mac_addr); idx--;) {
+ struct fbnic_mac_addr *mac_addr = &fbd->mac_addr[idx];
+
+ if (mac_addr->state == FBNIC_TCAM_S_DISABLED)
+ continue;
+
+ if (test_bit(FBNIC_MAC_ADDR_T_BMC, mac_addr->act_tcam)) {
+ if (fbnic_bmc_present(fbd))
+ continue;
+ dev_warn_once(fbd->dev,
+ "Found BMC MAC address w/ BMC not present\n");
+ }
+
+ fbnic_clear_macda_entry(fbd, idx);
+
+ /* If rule was already destined for deletion just wipe it now */
+ if (mac_addr->state == FBNIC_TCAM_S_DELETE) {
+ memset(mac_addr, 0, sizeof(*mac_addr));
+ continue;
+ }
+
+ /* Change state to update so that we will rewrite
+ * this tcam the next time fbnic_write_macda is called.
+ */
+ mac_addr->state = FBNIC_TCAM_S_UPDATE;
+ }
+}
+
static void fbnic_write_macda_entry(struct fbnic_dev *fbd, unsigned int idx,
struct fbnic_mac_addr *mac_addr)
{
@@ -336,3 +604,106 @@ void fbnic_write_macda(struct fbnic_dev *fbd)
mac_addr->state = FBNIC_TCAM_S_VALID;
}
}
+
+static void fbnic_clear_act_tcam(struct fbnic_dev *fbd, unsigned int idx)
+{
+ int i;
+
+ /* Invalidate entry and clear addr state info */
+ for (i = 0; i <= FBNIC_RPC_TCAM_ACT_WORD_LEN; i++)
+ wr32(fbd, FBNIC_RPC_TCAM_ACT(idx, i), 0);
+}
+
+void fbnic_clear_rules(struct fbnic_dev *fbd)
+{
+ u32 dest = FIELD_PREP(FBNIC_RPC_ACT_TBL0_DEST_MASK,
+ FBNIC_RPC_ACT_TBL0_DEST_BMC);
+ int i = FBNIC_RPC_TCAM_ACT_NUM_ENTRIES - 1;
+ struct fbnic_act_tcam *act_tcam;
+
+ /* Clear MAC rules */
+ fbnic_clear_macda(fbd);
+
+ /* If BMC is present we need to preserve the last rule which
+ * will be used to route traffic to the BMC if it is received.
+ *
+ * At this point it should be the only MAC address in the MACDA
+ * so any unicast or multicast traffic received should be routed
+ * to it. So leave the last rule in place.
+ *
+ * It will be rewritten to add the host again when we bring
+ * the interface back up.
+ */
+ if (fbnic_bmc_present(fbd)) {
+ act_tcam = &fbd->act_tcam[i];
+
+ if (act_tcam->state == FBNIC_TCAM_S_VALID &&
+ (act_tcam->dest & dest)) {
+ wr32(fbd, FBNIC_RPC_ACT_TBL0(i), dest);
+ wr32(fbd, FBNIC_RPC_ACT_TBL1(i), 0);
+
+ act_tcam->state = FBNIC_TCAM_S_UPDATE;
+
+ i--;
+ }
+ }
+
+ /* Work from the bottom up deleting all other rules from hardware */
+ do {
+ act_tcam = &fbd->act_tcam[i];
+
+ if (act_tcam->state != FBNIC_TCAM_S_VALID)
+ continue;
+
+ fbnic_clear_act_tcam(fbd, i);
+ act_tcam->state = FBNIC_TCAM_S_UPDATE;
+ } while (i--);
+}
+
+static void fbnic_delete_act_tcam(struct fbnic_dev *fbd, unsigned int idx)
+{
+ fbnic_clear_act_tcam(fbd, idx);
+ memset(&fbd->act_tcam[idx], 0, sizeof(struct fbnic_act_tcam));
+}
+
+static void fbnic_update_act_tcam(struct fbnic_dev *fbd, unsigned int idx)
+{
+ struct fbnic_act_tcam *act_tcam = &fbd->act_tcam[idx];
+ int i;
+
+ /* Update entry by writing the destination and RSS mask */
+ wr32(fbd, FBNIC_RPC_ACT_TBL0(idx), act_tcam->dest);
+ wr32(fbd, FBNIC_RPC_ACT_TBL1(idx), act_tcam->rss_en_mask);
+
+ /* Write new TCAM rule to hardware */
+ for (i = 0; i < FBNIC_RPC_TCAM_ACT_WORD_LEN; i++)
+ wr32(fbd, FBNIC_RPC_TCAM_ACT(idx, i),
+ FIELD_PREP(FBNIC_RPC_TCAM_ACT_MASK,
+ act_tcam->mask.tcam[i]) |
+ FIELD_PREP(FBNIC_RPC_TCAM_ACT_VALUE,
+ act_tcam->value.tcam[i]));
+
+ wrfl(fbd);
+
+ wr32(fbd, FBNIC_RPC_TCAM_ACT(idx, i), FBNIC_RPC_TCAM_VALIDATE);
+ act_tcam->state = FBNIC_TCAM_S_VALID;
+}
+
+void fbnic_write_rules(struct fbnic_dev *fbd)
+{
+ int i;
+
+ /* Flush any pending action table rules */
+ for (i = 0; i < FBNIC_RPC_ACT_TBL_NUM_ENTRIES; i++) {
+ struct fbnic_act_tcam *act_tcam = &fbd->act_tcam[i];
+
+ /* Check if update flag is set else exit. */
+ if (!(act_tcam->state & FBNIC_TCAM_S_UPDATE))
+ continue;
+
+ if (act_tcam->state == FBNIC_TCAM_S_DELETE)
+ fbnic_delete_act_tcam(fbd, i);
+ else
+ fbnic_update_act_tcam(fbd, i);
+ }
+}
@@ -54,9 +54,21 @@ struct fbnic_act_tcam {
};
enum {
+ FBNIC_RSS_EN_HOST_UDP6,
+ FBNIC_RSS_EN_HOST_UDP4,
+ FBNIC_RSS_EN_HOST_TCP6,
+ FBNIC_RSS_EN_HOST_TCP4,
+ FBNIC_RSS_EN_HOST_IP6,
+ FBNIC_RSS_EN_HOST_IP4,
FBNIC_RSS_EN_HOST_ETHER,
+ FBNIC_RSS_EN_XCAST_UDP6,
+#define FBNIC_RSS_EN_NUM_UNICAST FBNIC_RSS_EN_XCAST_UDP6
+ FBNIC_RSS_EN_XCAST_UDP4,
+ FBNIC_RSS_EN_XCAST_TCP6,
+ FBNIC_RSS_EN_XCAST_TCP4,
+ FBNIC_RSS_EN_XCAST_IP6,
+ FBNIC_RSS_EN_XCAST_IP4,
FBNIC_RSS_EN_XCAST_ETHER,
-#define FBNIC_RSS_EN_NUM_UNICAST FBNIC_RSS_EN_XCAST_ETHER
FBNIC_RSS_EN_NUM_ENTRIES
};
@@ -91,8 +103,22 @@ enum {
#define FBNIC_MAC_ADDR_T_HOST_LEN \
(FBNIC_MAC_ADDR_T_HOST_LAST - FBNIC_MAC_ADDR_T_HOST_START)
+#define FBNIC_RPC_TCAM_ACT0_IPSRC_IDX CSR_GENMASK(2, 0)
+#define FBNIC_RPC_TCAM_ACT0_IPSRC_VALID CSR_BIT(3)
+#define FBNIC_RPC_TCAM_ACT0_IPDST_IDX CSR_GENMASK(6, 4)
+#define FBNIC_RPC_TCAM_ACT0_IPDST_VALID CSR_BIT(7)
+#define FBNIC_RPC_TCAM_ACT0_OUTER_IPSRC_IDX CSR_GENMASK(10, 8)
+#define FBNIC_RPC_TCAM_ACT0_OUTER_IPSRC_VALID CSR_BIT(11)
+#define FBNIC_RPC_TCAM_ACT0_OUTER_IPDST_IDX CSR_GENMASK(14, 12)
+#define FBNIC_RPC_TCAM_ACT0_OUTER_IPDST_VALID CSR_BIT(15)
+
#define FBNIC_RPC_TCAM_ACT1_L2_MACDA_IDX CSR_GENMASK(9, 5)
#define FBNIC_RPC_TCAM_ACT1_L2_MACDA_VALID CSR_BIT(10)
+#define FBNIC_RPC_TCAM_ACT1_IP_IS_V6 CSR_BIT(11)
+#define FBNIC_RPC_TCAM_ACT1_IP_VALID CSR_BIT(12)
+#define FBNIC_RPC_TCAM_ACT1_OUTER_IP_VALID CSR_BIT(13)
+#define FBNIC_RPC_TCAM_ACT1_L4_IS_UDP CSR_BIT(14)
+#define FBNIC_RPC_TCAM_ACT1_L4_VALID CSR_BIT(15)
/* TCAM 0 - 3 reserved for BMC MAC addresses */
#define FBNIC_RPC_TCAM_MACDA_BMC_ADDR_IDX 0
@@ -114,11 +140,32 @@ enum {
/* Reserved for use to record Multicast promisc, or Promiscuous */
#define FBNIC_RPC_TCAM_MACDA_PROMISC_IDX 31
+enum {
+ FBNIC_UDP6_HASH_OPT,
+ FBNIC_UDP4_HASH_OPT,
+ FBNIC_TCP6_HASH_OPT,
+ FBNIC_TCP4_HASH_OPT,
+#define FBNIC_L4_HASH_OPT FBNIC_TCP4_HASH_OPT
+ FBNIC_IPV6_HASH_OPT,
+ FBNIC_IPV4_HASH_OPT,
+#define FBNIC_IP_HASH_OPT FBNIC_IPV4_HASH_OPT
+ FBNIC_ETHER_HASH_OPT,
+ FBNIC_NUM_HASH_OPT,
+};
+
struct fbnic_dev;
+struct fbnic_net;
void fbnic_bmc_rpc_init(struct fbnic_dev *fbd);
void fbnic_bmc_rpc_all_multi_config(struct fbnic_dev *fbd, bool enable_host);
+void fbnic_reset_indir_tbl(struct fbnic_net *fbn);
+void fbnic_rss_key_fill(u32 *buffer);
+void fbnic_rss_init_en_mask(struct fbnic_net *fbn);
+void fbnic_rss_disable_hw(struct fbnic_dev *fbd);
+void fbnic_rss_reinit_hw(struct fbnic_dev *fbd, struct fbnic_net *fbn);
+void fbnic_rss_reinit(struct fbnic_dev *fbd, struct fbnic_net *fbn);
+
int __fbnic_xc_unsync(struct fbnic_mac_addr *mac_addr, unsigned int tcam_idx);
struct fbnic_mac_addr *__fbnic_uc_sync(struct fbnic_dev *fbd,
const unsigned char *addr);
@@ -136,4 +183,7 @@ static inline int __fbnic_mc_unsync(struct fbnic_mac_addr *mac_addr)
{
return __fbnic_xc_unsync(mac_addr, FBNIC_MAC_ADDR_T_MULTICAST);
}
+
+void fbnic_clear_rules(struct fbnic_dev *fbd);
+void fbnic_write_rules(struct fbnic_dev *fbd);
#endif /* _FBNIC_RPC_H_ */