* [v2, net-next 0/9] Add more functionality to BNGE
@ 2025-08-18 19:47 Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 1/9] bng_en: Add initial support for RX and TX rings Bhargava Marreddy
` (8 more replies)
0 siblings, 9 replies; 11+ messages in thread
From: Bhargava Marreddy @ 2025-08-18 19:47 UTC (permalink / raw)
To: davem, edumazet, kuba, pabeni, andrew+netdev, horms
Cc: netdev, linux-kernel, michael.chan, pavan.chebbi,
vsrama-krishna.nemani, Bhargava Marreddy
Hi,
This patch series adds the infrastructure to make the netdevice
functional. It allocates data structures for core resources,
followed by their initialisation and registration with the firmware.
The core resources include the RX, TX, AGG, CMPL, and NQ rings,
as well as the VNIC. RX/TX functionality will be introduced in the
next patch series to keep this one at a reviewable size.
Changes from:
v1->v2
Addressed warnings and errors in the patch series.
Thanks,
Bhargava Marreddy (9):
bng_en: Add initial support for RX and TX rings
bng_en: Add initial support for CP and NQ rings
bng_en: Introduce VNIC
bng_en: Initialise core resources
bng_en: Allocate packet buffers
bng_en: Allocate stat contexts
bng_en: Register rings with the firmware
bng_en: Register default VNIC
bng_en: Configure default VNIC
drivers/net/ethernet/broadcom/Kconfig | 1 +
drivers/net/ethernet/broadcom/bnge/bnge.h | 27 +
.../net/ethernet/broadcom/bnge/bnge_core.c | 16 +
drivers/net/ethernet/broadcom/bnge/bnge_db.h | 34 +
.../ethernet/broadcom/bnge/bnge_hwrm_lib.c | 485 ++++
.../ethernet/broadcom/bnge/bnge_hwrm_lib.h | 31 +
.../net/ethernet/broadcom/bnge/bnge_netdev.c | 2186 +++++++++++++++++
.../net/ethernet/broadcom/bnge/bnge_netdev.h | 252 +-
.../net/ethernet/broadcom/bnge/bnge_resc.c | 4 +-
.../net/ethernet/broadcom/bnge/bnge_resc.h | 1 +
.../net/ethernet/broadcom/bnge/bnge_rmem.c | 58 +
.../net/ethernet/broadcom/bnge/bnge_rmem.h | 14 +
12 files changed, 3105 insertions(+), 4 deletions(-)
create mode 100644 drivers/net/ethernet/broadcom/bnge/bnge_db.h
--
2.47.3
^ permalink raw reply [flat|nested] 11+ messages in thread
* [v2, net-next 1/9] bng_en: Add initial support for RX and TX rings
2025-08-18 19:47 [v2, net-next 0/9] Add more functionality to BNGE Bhargava Marreddy
@ 2025-08-18 19:47 ` Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 2/9] bng_en: Add initial support for CP and NQ rings Bhargava Marreddy
` (7 subsequent siblings)
8 siblings, 0 replies; 11+ messages in thread
From: Bhargava Marreddy @ 2025-08-18 19:47 UTC (permalink / raw)
To: davem, edumazet, kuba, pabeni, andrew+netdev, horms
Cc: netdev, linux-kernel, michael.chan, pavan.chebbi,
vsrama-krishna.nemani, Bhargava Marreddy, Vikas Gupta,
Rajashekar Hudumula
Allocate data structures to support RX, AGG, and TX rings.
While data structures for RX/AGG rings are allocated,
initialise the page pool accordingly.
Signed-off-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Rajashekar Hudumula <rajashekar.hudumula@broadcom.com>
---
drivers/net/ethernet/broadcom/Kconfig | 1 +
drivers/net/ethernet/broadcom/bnge/bnge.h | 1 +
.../net/ethernet/broadcom/bnge/bnge_netdev.c | 343 +++++++++++++++++-
.../net/ethernet/broadcom/bnge/bnge_netdev.h | 90 ++++-
.../net/ethernet/broadcom/bnge/bnge_rmem.c | 58 +++
.../net/ethernet/broadcom/bnge/bnge_rmem.h | 12 +
6 files changed, 502 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/Kconfig b/drivers/net/ethernet/broadcom/Kconfig
index 0fc10e6c690..9fdef874f5c 100644
--- a/drivers/net/ethernet/broadcom/Kconfig
+++ b/drivers/net/ethernet/broadcom/Kconfig
@@ -257,6 +257,7 @@ config BNGE
tristate "Broadcom Ethernet device support"
depends on PCI
select NET_DEVLINK
+ select PAGE_POOL
help
This driver supports Broadcom 50/100/200/400/800 gigabit Ethernet cards.
The module will be called bng_en. To compile this driver as a module,
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge.h b/drivers/net/ethernet/broadcom/bnge/bnge.h
index 6fb3683b6b0..03e55b931f7 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge.h
@@ -129,6 +129,7 @@ struct bnge_dev {
unsigned long state;
#define BNGE_STATE_DRV_REGISTERED 0
+#define BNGE_STATE_OPEN 1
u64 fw_cap;
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
index 02254934f3d..9fbb1c385fe 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
@@ -14,10 +14,331 @@
#include <linux/if.h>
#include <net/ip.h>
#include <linux/skbuff.h>
+#include <net/page_pool/helpers.h>
#include "bnge.h"
#include "bnge_hwrm_lib.h"
#include "bnge_ethtool.h"
+#include "bnge_rmem.h"
+
+#define BNGE_RING_TO_TC_OFF(bd, tx) \
+ ((tx) % (bd)->tx_nr_rings_per_tc)
+
+#define BNGE_RING_TO_TC(bd, tx) \
+ ((tx) / (bd)->tx_nr_rings_per_tc)
+
+static bool bnge_separate_head_pool(struct bnge_rx_ring_info *rxr)
+{
+ return rxr->need_head_pool || PAGE_SIZE > BNGE_RX_PAGE_SIZE;
+}
+
+static void bnge_free_rx_rings(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i;
+
+ if (!bn->rx_ring)
+ return;
+
+ for (i = 0; i < bd->rx_nr_rings; i++) {
+ struct bnge_rx_ring_info *rxr = &bn->rx_ring[i];
+ struct bnge_ring_struct *ring;
+
+ page_pool_destroy(rxr->page_pool);
+ if (bnge_separate_head_pool(rxr))
+ page_pool_destroy(rxr->head_pool);
+ rxr->page_pool = rxr->head_pool = NULL;
+
+ kfree(rxr->rx_agg_bmap);
+ rxr->rx_agg_bmap = NULL;
+
+ ring = &rxr->rx_ring_struct;
+ bnge_free_ring(bd, &ring->ring_mem);
+
+ ring = &rxr->rx_agg_ring_struct;
+ bnge_free_ring(bd, &ring->ring_mem);
+ }
+}
+
+static int bnge_alloc_rx_page_pool(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr,
+ int numa_node)
+{
+ const unsigned int agg_size_fac = PAGE_SIZE / BNGE_RX_PAGE_SIZE;
+ const unsigned int rx_size_fac = PAGE_SIZE / SZ_4K;
+ struct page_pool_params pp = { 0 };
+ struct bnge_dev *bd = bn->bd;
+ struct page_pool *pool;
+
+ pp.pool_size = bn->rx_agg_ring_size / agg_size_fac;
+ pp.nid = numa_node;
+ pp.napi = &rxr->bnapi->napi;
+ pp.netdev = bn->netdev;
+ pp.dev = bd->dev;
+ pp.dma_dir = bn->rx_dir;
+ pp.max_len = PAGE_SIZE;
+ pp.flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV |
+ PP_FLAG_ALLOW_UNREADABLE_NETMEM;
+ pp.queue_idx = rxr->bnapi->index;
+
+ pool = page_pool_create(&pp);
+ if (IS_ERR(pool))
+ return PTR_ERR(pool);
+ rxr->page_pool = pool;
+
+ rxr->need_head_pool = page_pool_is_unreadable(pool);
+ if (bnge_separate_head_pool(rxr)) {
+ pp.pool_size = min(bn->rx_ring_size / rx_size_fac, 1024);
+ pp.flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV;
+ pool = page_pool_create(&pp);
+ if (IS_ERR(pool))
+ goto err_destroy_pp;
+ }
+ rxr->head_pool = pool;
+
+ return 0;
+
+err_destroy_pp:
+ page_pool_destroy(rxr->page_pool);
+ rxr->page_pool = NULL;
+ return PTR_ERR(pool);
+}
+
+static int bnge_alloc_rx_agg_bmap(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr)
+{
+ u16 mem_size;
+
+ rxr->rx_agg_bmap_size = bn->rx_agg_ring_mask + 1;
+ mem_size = rxr->rx_agg_bmap_size / 8;
+ rxr->rx_agg_bmap = kzalloc(mem_size, GFP_KERNEL);
+ if (!rxr->rx_agg_bmap)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int bnge_alloc_rx_rings(struct bnge_net *bn)
+{
+ int i, rc = 0, agg_rings = 0, cpu;
+ struct bnge_dev *bd = bn->bd;
+
+ if (!bn->rx_ring)
+ return -ENOMEM;
+
+ if (bnge_is_agg_reqd(bd))
+ agg_rings = 1;
+
+ for (i = 0; i < bd->rx_nr_rings; i++) {
+ struct bnge_rx_ring_info *rxr = &bn->rx_ring[i];
+ struct bnge_ring_struct *ring;
+ int cpu_node;
+
+ ring = &rxr->rx_ring_struct;
+
+ cpu = cpumask_local_spread(i, dev_to_node(bd->dev));
+ cpu_node = cpu_to_node(cpu);
+ netdev_dbg(bn->netdev, "Allocating page pool for rx_ring[%d] on numa_node: %d\n",
+ i, cpu_node);
+ rc = bnge_alloc_rx_page_pool(bn, rxr, cpu_node);
+ if (rc)
+ return rc;
+
+ rc = bnge_alloc_ring(bd, &ring->ring_mem);
+ if (rc)
+ return rc;
+
+ ring->grp_idx = i;
+ if (agg_rings) {
+ ring = &rxr->rx_agg_ring_struct;
+ rc = bnge_alloc_ring(bd, &ring->ring_mem);
+ if (rc)
+ return rc;
+
+ ring->grp_idx = i;
+ rc = bnge_alloc_rx_agg_bmap(bn, rxr);
+ if (rc)
+ return rc;
+ }
+ }
+
+ return rc;
+}
+
+static void bnge_free_tx_rings(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i;
+
+ if (!bn->tx_ring)
+ return;
+
+ for (i = 0; i < bd->tx_nr_rings; i++) {
+ struct bnge_tx_ring_info *txr = &bn->tx_ring[i];
+ struct bnge_ring_struct *ring;
+
+ ring = &txr->tx_ring_struct;
+
+ bnge_free_ring(bd, &ring->ring_mem);
+ }
+}
+
+static int bnge_alloc_tx_rings(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i, j, rc;
+
+ for (i = 0, j = 0; i < bd->tx_nr_rings; i++) {
+ struct bnge_tx_ring_info *txr = &bn->tx_ring[i];
+ struct bnge_ring_struct *ring;
+ u8 qidx;
+
+ ring = &txr->tx_ring_struct;
+
+ rc = bnge_alloc_ring(bd, &ring->ring_mem);
+ if (rc)
+ return rc;
+
+ ring->grp_idx = txr->bnapi->index;
+ qidx = bd->tc_to_qidx[j];
+ ring->queue_id = bd->q_info[qidx].queue_id;
+ if (BNGE_RING_TO_TC_OFF(bd, i) == (bd->tx_nr_rings_per_tc - 1))
+ j++;
+ }
+
+ return 0;
+}
+
+static void bnge_free_core(struct bnge_net *bn)
+{
+ bnge_free_tx_rings(bn);
+ bnge_free_rx_rings(bn);
+ kfree(bn->tx_ring_map);
+ bn->tx_ring_map = NULL;
+ kfree(bn->tx_ring);
+ bn->tx_ring = NULL;
+ kfree(bn->rx_ring);
+ bn->rx_ring = NULL;
+ kfree(bn->bnapi);
+ bn->bnapi = NULL;
+}
+
+static int bnge_alloc_core(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i, j, size, arr_size;
+ int rc = -ENOMEM;
+ void *bnapi;
+
+ arr_size = L1_CACHE_ALIGN(sizeof(struct bnge_napi *) *
+ bd->nq_nr_rings);
+ size = L1_CACHE_ALIGN(sizeof(struct bnge_napi));
+ bnapi = kzalloc(arr_size + size * bd->nq_nr_rings, GFP_KERNEL);
+ if (!bnapi)
+ return rc;
+
+ bn->bnapi = bnapi;
+ bnapi += arr_size;
+ for (i = 0; i < bd->nq_nr_rings; i++, bnapi += size) {
+ struct bnge_nq_ring_info *nqr;
+
+ bn->bnapi[i] = bnapi;
+ bn->bnapi[i]->index = i;
+ bn->bnapi[i]->bn = bn;
+ nqr = &bn->bnapi[i]->nq_ring;
+ nqr->ring_struct.ring_mem.flags = BNGE_RMEM_RING_PTE_FLAG;
+ }
+
+ bn->rx_ring = kcalloc(bd->rx_nr_rings,
+ sizeof(struct bnge_rx_ring_info),
+ GFP_KERNEL);
+ if (!bn->rx_ring)
+ goto err_free_core;
+
+ for (i = 0; i < bd->rx_nr_rings; i++) {
+ struct bnge_rx_ring_info *rxr = &bn->rx_ring[i];
+
+ rxr->rx_ring_struct.ring_mem.flags =
+ BNGE_RMEM_RING_PTE_FLAG;
+ rxr->rx_agg_ring_struct.ring_mem.flags =
+ BNGE_RMEM_RING_PTE_FLAG;
+ rxr->bnapi = bn->bnapi[i];
+ bn->bnapi[i]->rx_ring = &bn->rx_ring[i];
+ }
+
+ bn->tx_ring = kcalloc(bd->tx_nr_rings,
+ sizeof(struct bnge_tx_ring_info),
+ GFP_KERNEL);
+ if (!bn->tx_ring)
+ goto err_free_core;
+
+ bn->tx_ring_map = kcalloc(bd->tx_nr_rings, sizeof(u16),
+ GFP_KERNEL);
+
+ if (!bn->tx_ring_map)
+ goto err_free_core;
+
+ if (bd->flags & BNGE_EN_SHARED_CHNL)
+ j = 0;
+ else
+ j = bd->rx_nr_rings;
+
+ for (i = 0; i < bd->tx_nr_rings; i++) {
+ struct bnge_tx_ring_info *txr = &bn->tx_ring[i];
+ struct bnge_napi *bnapi2;
+ int k;
+
+ txr->tx_ring_struct.ring_mem.flags = BNGE_RMEM_RING_PTE_FLAG;
+ bn->tx_ring_map[i] = i;
+ k = j + BNGE_RING_TO_TC_OFF(bd, i);
+
+ bnapi2 = bn->bnapi[k];
+ txr->txq_index = i;
+ txr->tx_napi_idx =
+ BNGE_RING_TO_TC(bd, txr->txq_index);
+ bnapi2->tx_ring[txr->tx_napi_idx] = txr;
+ txr->bnapi = bnapi2;
+ }
+
+ bnge_init_ring_struct(bn);
+
+ rc = bnge_alloc_rx_rings(bn);
+ if (rc)
+ goto err_free_core;
+
+ rc = bnge_alloc_tx_rings(bn);
+ if (rc)
+ goto err_free_core;
+
+ return 0;
+
+err_free_core:
+ bnge_free_core(bn);
+ return rc;
+}
+
+static int bnge_open_core(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int rc;
+
+ netif_carrier_off(bn->netdev);
+
+ rc = bnge_reserve_rings(bd);
+ if (rc) {
+ netdev_err(bn->netdev, "bnge_reserve_rings err: %d\n", rc);
+ return rc;
+ }
+
+ rc = bnge_alloc_core(bn);
+ if (rc) {
+ netdev_err(bn->netdev, "bnge_alloc_core err: %d\n", rc);
+ return rc;
+ }
+
+ set_bit(BNGE_STATE_OPEN, &bd->state);
+ return 0;
+}
static netdev_tx_t bnge_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
@@ -28,11 +349,30 @@ static netdev_tx_t bnge_start_xmit(struct sk_buff *skb, struct net_device *dev)
static int bnge_open(struct net_device *dev)
{
- return 0;
+ struct bnge_net *bn = netdev_priv(dev);
+ int rc;
+
+ rc = bnge_open_core(bn);
+ if (rc)
+ netdev_err(dev, "bnge_open_core err: %d\n", rc);
+
+ return rc;
+}
+
+static void bnge_close_core(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+
+ clear_bit(BNGE_STATE_OPEN, &bd->state);
+ bnge_free_core(bn);
}
static int bnge_close(struct net_device *dev)
{
+ struct bnge_net *bn = netdev_priv(dev);
+
+ bnge_close_core(bn);
+
return 0;
}
@@ -238,6 +578,7 @@ int bnge_netdev_alloc(struct bnge_dev *bd, int max_irqs)
bn->rx_ring_size = BNGE_DEFAULT_RX_RING_SIZE;
bn->tx_ring_size = BNGE_DEFAULT_TX_RING_SIZE;
+ bn->rx_dir = DMA_FROM_DEVICE;
bnge_set_tpa_flags(bd);
bnge_set_ring_params(bd);
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
index a650d71a58d..b78b5e6d3ed 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
@@ -113,8 +113,7 @@ struct bnge_sw_rx_bd {
};
struct bnge_sw_rx_agg_bd {
- struct page *page;
- unsigned int offset;
+ netmem_ref netmem;
dma_addr_t mapping;
};
@@ -164,6 +163,14 @@ struct bnge_net {
struct hlist_head l2_fltr_hash_tbl[BNGE_L2_FLTR_HASH_SIZE];
u32 hash_seed;
u64 toeplitz_prefix;
+
+ struct bnge_napi **bnapi;
+
+ struct bnge_rx_ring_info *rx_ring;
+ struct bnge_tx_ring_info *tx_ring;
+
+ u16 *tx_ring_map;
+ enum dma_data_direction rx_dir;
};
#define BNGE_DEFAULT_RX_RING_SIZE 511
@@ -203,4 +210,83 @@ void bnge_set_ring_params(struct bnge_dev *bd);
#define BNGE_MAX_RX_JUM_DESC_CNT (RX_DESC_CNT * MAX_RX_AGG_PAGES - 1)
#define BNGE_MAX_TX_DESC_CNT (TX_DESC_CNT * MAX_TX_PAGES - 1)
+#define BNGE_MAX_TXR_PER_NAPI 8
+
+#define bnge_for_each_napi_tx(iter, bnapi, txr) \
+ for (iter = 0, txr = (bnapi)->tx_ring[0]; txr; \
+ txr = (iter < BNGE_MAX_TXR_PER_NAPI - 1) ? \
+ (bnapi)->tx_ring[++iter] : NULL)
+
+struct bnge_cp_ring_info {
+ struct bnge_napi *bnapi;
+ dma_addr_t *desc_mapping;
+ struct tx_cmp **desc_ring;
+ struct bnge_ring_struct ring_struct;
+};
+
+struct bnge_nq_ring_info {
+ struct bnge_napi *bnapi;
+ dma_addr_t *desc_mapping;
+ struct nqe_cn **desc_ring;
+ struct bnge_ring_struct ring_struct;
+};
+
+struct bnge_rx_ring_info {
+ struct bnge_napi *bnapi;
+ struct bnge_cp_ring_info *rx_cpr;
+ u16 rx_prod;
+ u16 rx_agg_prod;
+ u16 rx_sw_agg_prod;
+ u16 rx_next_cons;
+
+ struct rx_bd *rx_desc_ring[MAX_RX_PAGES];
+ struct bnge_sw_rx_bd *rx_buf_ring;
+
+ struct rx_bd *rx_agg_desc_ring[MAX_RX_AGG_PAGES];
+ struct bnge_sw_rx_agg_bd *rx_agg_buf_ring;
+
+ unsigned long *rx_agg_bmap;
+ u16 rx_agg_bmap_size;
+
+ dma_addr_t rx_desc_mapping[MAX_RX_PAGES];
+ dma_addr_t rx_agg_desc_mapping[MAX_RX_AGG_PAGES];
+
+ struct bnge_ring_struct rx_ring_struct;
+ struct bnge_ring_struct rx_agg_ring_struct;
+ struct page_pool *page_pool;
+ struct page_pool *head_pool;
+ bool need_head_pool;
+};
+
+struct bnge_tx_ring_info {
+ struct bnge_napi *bnapi;
+ struct bnge_cp_ring_info *tx_cpr;
+ u16 tx_prod;
+ u16 tx_cons;
+ u16 tx_hw_cons;
+ u16 txq_index;
+ u8 tx_napi_idx;
+ u8 kick_pending;
+
+ struct tx_bd *tx_desc_ring[MAX_TX_PAGES];
+ struct bnge_sw_tx_bd *tx_buf_ring;
+
+ dma_addr_t tx_desc_mapping[MAX_TX_PAGES];
+
+ u32 dev_state;
+#define BNGE_DEV_STATE_CLOSING 0x1
+
+ struct bnge_ring_struct tx_ring_struct;
+};
+
+struct bnge_napi {
+ struct napi_struct napi;
+ struct bnge_net *bn;
+ int index;
+
+ struct bnge_nq_ring_info nq_ring;
+ struct bnge_rx_ring_info *rx_ring;
+ struct bnge_tx_ring_info *tx_ring[BNGE_MAX_TXR_PER_NAPI];
+};
+
#endif /* _BNGE_NETDEV_H_ */
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_rmem.c b/drivers/net/ethernet/broadcom/bnge/bnge_rmem.c
index 52ada65943a..e0c16ed6286 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_rmem.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_rmem.c
@@ -436,3 +436,61 @@ int bnge_alloc_ctx_mem(struct bnge_dev *bd)
return 0;
}
+
+void bnge_init_ring_struct(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i, j;
+
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ struct bnge_napi *bnapi = bn->bnapi[i];
+ struct bnge_ring_mem_info *rmem;
+ struct bnge_nq_ring_info *nqr;
+ struct bnge_rx_ring_info *rxr;
+ struct bnge_tx_ring_info *txr;
+ struct bnge_ring_struct *ring;
+
+ nqr = &bnapi->nq_ring;
+ ring = &nqr->ring_struct;
+ rmem = &ring->ring_mem;
+ rmem->nr_pages = bn->cp_nr_pages;
+ rmem->page_size = HW_CMPD_RING_SIZE;
+ rmem->pg_arr = (void **)nqr->desc_ring;
+ rmem->dma_arr = nqr->desc_mapping;
+ rmem->vmem_size = 0;
+
+ rxr = bnapi->rx_ring;
+ if (!rxr)
+ goto skip_rx;
+
+ ring = &rxr->rx_ring_struct;
+ rmem = &ring->ring_mem;
+ rmem->nr_pages = bn->rx_nr_pages;
+ rmem->page_size = HW_RXBD_RING_SIZE;
+ rmem->pg_arr = (void **)rxr->rx_desc_ring;
+ rmem->dma_arr = rxr->rx_desc_mapping;
+ rmem->vmem_size = SW_RXBD_RING_SIZE * bn->rx_nr_pages;
+ rmem->vmem = (void **)&rxr->rx_buf_ring;
+
+ ring = &rxr->rx_agg_ring_struct;
+ rmem = &ring->ring_mem;
+ rmem->nr_pages = bn->rx_agg_nr_pages;
+ rmem->page_size = HW_RXBD_RING_SIZE;
+ rmem->pg_arr = (void **)rxr->rx_agg_desc_ring;
+ rmem->dma_arr = rxr->rx_agg_desc_mapping;
+ rmem->vmem_size = SW_RXBD_AGG_RING_SIZE * bn->rx_agg_nr_pages;
+ rmem->vmem = (void **)&rxr->rx_agg_buf_ring;
+
+skip_rx:
+ bnge_for_each_napi_tx(j, bnapi, txr) {
+ ring = &txr->tx_ring_struct;
+ rmem = &ring->ring_mem;
+ rmem->nr_pages = bn->tx_nr_pages;
+ rmem->page_size = HW_TXBD_RING_SIZE;
+ rmem->pg_arr = (void **)txr->tx_desc_ring;
+ rmem->dma_arr = txr->tx_desc_mapping;
+ rmem->vmem_size = SW_TXBD_RING_SIZE * bn->tx_nr_pages;
+ rmem->vmem = (void **)&txr->tx_buf_ring;
+ }
+ }
+}
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h b/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h
index 300f1d8268e..162a66c7983 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h
@@ -6,6 +6,7 @@
struct bnge_ctx_mem_type;
struct bnge_dev;
+struct bnge_net;
#define PTU_PTE_VALID 0x1UL
#define PTU_PTE_LAST 0x2UL
@@ -180,9 +181,20 @@ struct bnge_ctx_mem_info {
struct bnge_ctx_mem_type ctx_arr[BNGE_CTX_V2_MAX];
};
+struct bnge_ring_struct {
+ struct bnge_ring_mem_info ring_mem;
+
+ union {
+ u16 grp_idx;
+ u16 map_idx; /* Used by NQs */
+ };
+ u8 queue_id;
+};
+
int bnge_alloc_ring(struct bnge_dev *bd, struct bnge_ring_mem_info *rmem);
void bnge_free_ring(struct bnge_dev *bd, struct bnge_ring_mem_info *rmem);
int bnge_alloc_ctx_mem(struct bnge_dev *bd);
void bnge_free_ctx_mem(struct bnge_dev *bd);
+void bnge_init_ring_struct(struct bnge_net *bn);
#endif /* _BNGE_RMEM_H_ */
--
2.47.3
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [v2, net-next 2/9] bng_en: Add initial support for CP and NQ rings
2025-08-18 19:47 [v2, net-next 0/9] Add more functionality to BNGE Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 1/9] bng_en: Add initial support for RX and TX rings Bhargava Marreddy
@ 2025-08-18 19:47 ` Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 3/9] bng_en: Introduce VNIC Bhargava Marreddy
` (6 subsequent siblings)
8 siblings, 0 replies; 11+ messages in thread
From: Bhargava Marreddy @ 2025-08-18 19:47 UTC (permalink / raw)
To: davem, edumazet, kuba, pabeni, andrew+netdev, horms
Cc: netdev, linux-kernel, michael.chan, pavan.chebbi,
vsrama-krishna.nemani, Bhargava Marreddy, Vikas Gupta,
Rajashekar Hudumula
Allocate CP and NQ related data structures and add support to
associate NQ and CQ rings. Also, add the association of NQ, NAPI,
and interrupts.
Signed-off-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Rajashekar Hudumula <rajashekar.hudumula@broadcom.com>
---
drivers/net/ethernet/broadcom/bnge/bnge.h | 1 +
.../net/ethernet/broadcom/bnge/bnge_netdev.c | 434 ++++++++++++++++++
.../net/ethernet/broadcom/bnge/bnge_netdev.h | 12 +
.../net/ethernet/broadcom/bnge/bnge_resc.c | 2 +-
4 files changed, 448 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge.h b/drivers/net/ethernet/broadcom/bnge/bnge.h
index 03e55b931f7..c536c0cc66e 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge.h
@@ -215,5 +215,6 @@ static inline bool bnge_is_agg_reqd(struct bnge_dev *bd)
}
bool bnge_aux_registered(struct bnge_dev *bd);
+u16 bnge_aux_get_msix(struct bnge_dev *bd);
#endif /* _BNGE_H_ */
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
index 9fbb1c385fe..d8976faabd3 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
@@ -27,6 +27,225 @@
#define BNGE_RING_TO_TC(bd, tx) \
((tx) / (bd)->tx_nr_rings_per_tc)
+#define BNGE_TC_TO_RING_BASE(bd, tc) \
+ ((tc) * (bd)->tx_nr_rings_per_tc)
+
+static void bnge_free_nq_desc_arr(struct bnge_nq_ring_info *nqr)
+{
+ struct bnge_ring_struct *ring = &nqr->ring_struct;
+
+ kfree(nqr->desc_ring);
+ nqr->desc_ring = NULL;
+ ring->ring_mem.pg_arr = NULL;
+ kfree(nqr->desc_mapping);
+ nqr->desc_mapping = NULL;
+ ring->ring_mem.dma_arr = NULL;
+}
+
+static void bnge_free_cp_desc_arr(struct bnge_cp_ring_info *cpr)
+{
+ struct bnge_ring_struct *ring = &cpr->ring_struct;
+
+ kfree(cpr->desc_ring);
+ cpr->desc_ring = NULL;
+ ring->ring_mem.pg_arr = NULL;
+ kfree(cpr->desc_mapping);
+ cpr->desc_mapping = NULL;
+ ring->ring_mem.dma_arr = NULL;
+}
+
+static int bnge_alloc_nq_desc_arr(struct bnge_nq_ring_info *nqr, int n)
+{
+ nqr->desc_ring = kcalloc(n, sizeof(*nqr->desc_ring), GFP_KERNEL);
+ if (!nqr->desc_ring)
+ return -ENOMEM;
+
+ nqr->desc_mapping = kcalloc(n, sizeof(*nqr->desc_mapping), GFP_KERNEL);
+ if (!nqr->desc_mapping)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int bnge_alloc_cp_desc_arr(struct bnge_cp_ring_info *cpr, int n)
+{
+ cpr->desc_ring = kcalloc(n, sizeof(*cpr->desc_ring), GFP_KERNEL);
+ if (!cpr->desc_ring)
+ return -ENOMEM;
+
+ cpr->desc_mapping = kcalloc(n, sizeof(*cpr->desc_mapping), GFP_KERNEL);
+ if (!cpr->desc_mapping)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void bnge_free_nq_arrays(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i;
+
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ struct bnge_napi *bnapi = bn->bnapi[i];
+
+ bnge_free_nq_desc_arr(&bnapi->nq_ring);
+ }
+}
+
+static int bnge_alloc_nq_arrays(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i;
+
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ struct bnge_napi *bnapi = bn->bnapi[i];
+ int rc;
+
+ rc = bnge_alloc_nq_desc_arr(&bnapi->nq_ring, bn->cp_nr_pages);
+ if (rc)
+ return rc;
+ }
+
+ return 0;
+}
+
+static void bnge_free_nq_tree(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i;
+
+ if (!bn->bnapi)
+ return;
+
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ struct bnge_napi *bnapi = bn->bnapi[i];
+ struct bnge_nq_ring_info *nqr;
+ struct bnge_ring_struct *ring;
+ int j;
+
+ nqr = &bnapi->nq_ring;
+ ring = &nqr->ring_struct;
+
+ bnge_free_ring(bd, &ring->ring_mem);
+
+ if (!nqr->cp_ring_arr)
+ continue;
+
+ for (j = 0; j < nqr->cp_ring_count; j++) {
+ struct bnge_cp_ring_info *cpr = &nqr->cp_ring_arr[j];
+
+ ring = &cpr->ring_struct;
+ bnge_free_ring(bd, &ring->ring_mem);
+ bnge_free_cp_desc_arr(cpr);
+ }
+ kfree(nqr->cp_ring_arr);
+ nqr->cp_ring_arr = NULL;
+ nqr->cp_ring_count = 0;
+ }
+}
+
+static int alloc_one_cp_ring(struct bnge_net *bn,
+ struct bnge_cp_ring_info *cpr)
+{
+ struct bnge_ring_mem_info *rmem;
+ struct bnge_ring_struct *ring;
+ struct bnge_dev *bd = bn->bd;
+ int rc;
+
+ rc = bnge_alloc_cp_desc_arr(cpr, bn->cp_nr_pages);
+ if (rc) {
+ bnge_free_cp_desc_arr(cpr);
+ return -ENOMEM;
+ }
+ ring = &cpr->ring_struct;
+ rmem = &ring->ring_mem;
+ rmem->nr_pages = bn->cp_nr_pages;
+ rmem->page_size = HW_CMPD_RING_SIZE;
+ rmem->pg_arr = (void **)cpr->desc_ring;
+ rmem->dma_arr = cpr->desc_mapping;
+ rmem->flags = BNGE_RMEM_RING_PTE_FLAG;
+ rc = bnge_alloc_ring(bd, rmem);
+ if (rc) {
+ bnge_free_ring(bd, rmem);
+ bnge_free_cp_desc_arr(cpr);
+ }
+
+ return rc;
+}
+
+static int bnge_alloc_nq_tree(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i, j, rc, ulp_msix;
+ int tcs = 1;
+
+ ulp_msix = bnge_aux_get_msix(bd);
+ for (i = 0, j = 0; i < bd->nq_nr_rings; i++) {
+ bool sh = !!(bd->flags & BNGE_EN_SHARED_CHNL);
+ struct bnge_napi *bnapi = bn->bnapi[i];
+ struct bnge_nq_ring_info *nqr;
+ struct bnge_cp_ring_info *cpr;
+ struct bnge_ring_struct *ring;
+ int cp_count = 0, k;
+ int rx = 0, tx = 0;
+
+ if (!bnapi)
+ continue;
+
+ nqr = &bnapi->nq_ring;
+ nqr->bnapi = bnapi;
+ ring = &nqr->ring_struct;
+
+ rc = bnge_alloc_ring(bd, &ring->ring_mem);
+ if (rc)
+ return rc;
+
+ ring->map_idx = ulp_msix + i;
+
+ if (i < bd->rx_nr_rings) {
+ cp_count++;
+ rx = 1;
+ }
+
+ if ((sh && i < bd->tx_nr_rings) ||
+ (!sh && i >= bd->rx_nr_rings)) {
+ cp_count += tcs;
+ tx = 1;
+ }
+
+ nqr->cp_ring_arr = kcalloc(cp_count, sizeof(*cpr),
+ GFP_KERNEL);
+ if (!nqr->cp_ring_arr)
+ return -ENOMEM;
+
+ nqr->cp_ring_count = cp_count;
+
+ for (k = 0; k < cp_count; k++) {
+ cpr = &nqr->cp_ring_arr[k];
+ rc = alloc_one_cp_ring(bn, cpr);
+ if (rc)
+ return rc;
+
+ cpr->bnapi = bnapi;
+ cpr->cp_idx = k;
+ if (!k && rx) {
+ bn->rx_ring[i].rx_cpr = cpr;
+ cpr->cp_ring_type = BNGE_NQ_HDL_TYPE_RX;
+ } else {
+ int n, tc = k - rx;
+
+ n = BNGE_TC_TO_RING_BASE(bd, tc) + j;
+ bn->tx_ring[n].tx_cpr = cpr;
+ cpr->cp_ring_type = BNGE_NQ_HDL_TYPE_TX;
+ }
+ }
+ if (tx)
+ j++;
+ }
+
+ return 0;
+}
+
static bool bnge_separate_head_pool(struct bnge_rx_ring_info *rxr)
{
return rxr->need_head_pool || PAGE_SIZE > BNGE_RX_PAGE_SIZE;
@@ -209,10 +428,19 @@ static int bnge_alloc_tx_rings(struct bnge_net *bn)
return 0;
}
+static void bnge_free_ring_grps(struct bnge_net *bn)
+{
+ kfree(bn->grp_info);
+ bn->grp_info = NULL;
+}
+
static void bnge_free_core(struct bnge_net *bn)
{
bnge_free_tx_rings(bn);
bnge_free_rx_rings(bn);
+ bnge_free_nq_tree(bn);
+ bnge_free_nq_arrays(bn);
+ bnge_free_ring_grps(bn);
kfree(bn->tx_ring_map);
bn->tx_ring_map = NULL;
kfree(bn->tx_ring);
@@ -300,6 +528,10 @@ static int bnge_alloc_core(struct bnge_net *bn)
txr->bnapi = bnapi2;
}
+ rc = bnge_alloc_nq_arrays(bn);
+ if (rc)
+ goto err_free_core;
+
bnge_init_ring_struct(bn);
rc = bnge_alloc_rx_rings(bn);
@@ -310,13 +542,198 @@ static int bnge_alloc_core(struct bnge_net *bn)
if (rc)
goto err_free_core;
+ rc = bnge_alloc_nq_tree(bn);
+ if (rc)
+ goto err_free_core;
+
return 0;
err_free_core:
bnge_free_core(bn);
+
+ return rc;
+}
+
+static int bnge_cp_num_to_irq_num(struct bnge_net *bn, int n)
+{
+ struct bnge_napi *bnapi = bn->bnapi[n];
+ struct bnge_nq_ring_info *nqr;
+
+ nqr = &bnapi->nq_ring;
+
+ return nqr->ring_struct.map_idx;
+}
+
+static irqreturn_t bnge_msix(int irq, void *dev_instance)
+{
+ /* NAPI scheduling to be added in a future patch */
+ return IRQ_HANDLED;
+}
+
+static void bnge_setup_msix(struct bnge_net *bn)
+{
+ struct net_device *dev = bn->netdev;
+ struct bnge_dev *bd = bn->bd;
+ int len, i;
+
+ len = sizeof(bd->irq_tbl[0].name);
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ int map_idx = bnge_cp_num_to_irq_num(bn, i);
+ char *attr;
+
+ if (bd->flags & BNGE_EN_SHARED_CHNL)
+ attr = "TxRx";
+ else if (i < bd->rx_nr_rings)
+ attr = "rx";
+ else
+ attr = "tx";
+
+ snprintf(bd->irq_tbl[map_idx].name, len, "%s-%s-%d", dev->name,
+ attr, i);
+ bd->irq_tbl[map_idx].handler = bnge_msix;
+ }
+}
+
+static int bnge_set_real_num_queues(struct bnge_net *bn)
+{
+ struct net_device *dev = bn->netdev;
+ struct bnge_dev *bd = bn->bd;
+ int rc;
+
+ rc = netif_set_real_num_tx_queues(dev, bd->tx_nr_rings);
+ if (rc)
+ return rc;
+
+ return netif_set_real_num_rx_queues(dev, bd->rx_nr_rings);
+}
+
+static int bnge_setup_interrupts(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+
+ if (!bd->irq_tbl) {
+ if (bnge_alloc_irqs(bd))
+ return -ENODEV;
+ }
+
+ bnge_setup_msix(bn);
+
+ return bnge_set_real_num_queues(bn);
+}
+
+static int bnge_request_irq(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i, rc;
+
+ rc = bnge_setup_interrupts(bn);
+ if (rc) {
+ netdev_err(bn->netdev, "bnge_setup_interrupts err: %d\n", rc);
+ return rc;
+ }
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ int map_idx = bnge_cp_num_to_irq_num(bn, i);
+ struct bnge_irq *irq = &bd->irq_tbl[map_idx];
+
+ rc = request_irq(irq->vector, irq->handler, 0, irq->name,
+ bn->bnapi[i]);
+ if (rc)
+ break;
+
+ netif_napi_set_irq_locked(&bn->bnapi[i]->napi, irq->vector);
+ irq->requested = 1;
+
+ if (zalloc_cpumask_var(&irq->cpu_mask, GFP_KERNEL)) {
+ int numa_node = dev_to_node(&bd->pdev->dev);
+
+ irq->have_cpumask = 1;
+ cpumask_set_cpu(cpumask_local_spread(i, numa_node),
+ irq->cpu_mask);
+ rc = irq_set_affinity_hint(irq->vector, irq->cpu_mask);
+ if (rc) {
+ netdev_warn(bn->netdev,
+ "Set affinity failed, IRQ = %d\n",
+ irq->vector);
+ break;
+ }
+ }
+ }
+
return rc;
}
+static int bnge_napi_poll(struct napi_struct *napi, int budget)
+{
+ int work_done = 0;
+
+ /* defer NAPI implementation to next patch series */
+ napi_complete_done(napi, work_done);
+
+ return work_done;
+}
+
+static void bnge_init_napi(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ struct bnge_napi *bnapi;
+ int i;
+
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ bnapi = bn->bnapi[i];
+ netif_napi_add_config(bn->netdev, &bnapi->napi, bnge_napi_poll,
+ bnapi->index);
+ }
+}
+
+static void bnge_del_napi(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i;
+
+ if (!bn->bnapi)
+ return;
+
+ for (i = 0; i < bd->rx_nr_rings; i++)
+ netif_queue_set_napi(bn->netdev, i, NETDEV_QUEUE_TYPE_RX, NULL);
+ for (i = 0; i < bd->tx_nr_rings; i++)
+ netif_queue_set_napi(bn->netdev, i, NETDEV_QUEUE_TYPE_TX, NULL);
+
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ struct bnge_napi *bnapi = bn->bnapi[i];
+
+ __netif_napi_del(&bnapi->napi);
+ }
+
+ /* Wait for RCU grace period after removing NAPI instances */
+ synchronize_net();
+}
+
+static void bnge_free_irq(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ struct bnge_irq *irq;
+ int i;
+
+ if (!bd->irq_tbl || !bn->bnapi)
+ return;
+
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ int map_idx = bnge_cp_num_to_irq_num(bn, i);
+
+ irq = &bd->irq_tbl[map_idx];
+ if (irq->requested) {
+ if (irq->have_cpumask) {
+ irq_set_affinity_hint(irq->vector, NULL);
+ free_cpumask_var(irq->cpu_mask);
+ irq->have_cpumask = 0;
+ }
+ free_irq(irq->vector, bn->bnapi[i]);
+ }
+
+ irq->requested = 0;
+ }
+}
+
static int bnge_open_core(struct bnge_net *bn)
{
struct bnge_dev *bd = bn->bd;
@@ -336,8 +753,22 @@ static int bnge_open_core(struct bnge_net *bn)
return rc;
}
+ bnge_init_napi(bn);
+ rc = bnge_request_irq(bn);
+ if (rc) {
+ netdev_err(bn->netdev, "bnge_request_irq err: %d\n", rc);
+ goto err_del_napi;
+ }
+
set_bit(BNGE_STATE_OPEN, &bd->state);
+
return 0;
+
+err_del_napi:
+ bnge_del_napi(bn);
+ bnge_free_core(bn);
+
+ return rc;
}
static netdev_tx_t bnge_start_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -364,6 +795,9 @@ static void bnge_close_core(struct bnge_net *bn)
struct bnge_dev *bd = bn->bd;
clear_bit(BNGE_STATE_OPEN, &bd->state);
+ bnge_free_irq(bn);
+ bnge_del_napi(bn);
+
bnge_free_core(bn);
}
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
index b78b5e6d3ed..665a20380de 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
@@ -132,6 +132,9 @@ enum {
#define BNGE_NET_EN_TPA (BNGE_NET_EN_GRO | BNGE_NET_EN_LRO)
+#define BNGE_NQ_HDL_TYPE_RX 0x00
+#define BNGE_NQ_HDL_TYPE_TX 0x01
+
struct bnge_net {
struct bnge_dev *bd;
struct net_device *netdev;
@@ -171,6 +174,10 @@ struct bnge_net {
u16 *tx_ring_map;
enum dma_data_direction rx_dir;
+
+ /* grp_info indexed by napi/nq index */
+ struct bnge_ring_grp_info *grp_info;
+ int total_irqs;
};
#define BNGE_DEFAULT_RX_RING_SIZE 511
@@ -222,6 +229,8 @@ struct bnge_cp_ring_info {
dma_addr_t *desc_mapping;
struct tx_cmp **desc_ring;
struct bnge_ring_struct ring_struct;
+ u8 cp_ring_type;
+ u8 cp_idx;
};
struct bnge_nq_ring_info {
@@ -229,6 +238,9 @@ struct bnge_nq_ring_info {
dma_addr_t *desc_mapping;
struct nqe_cn **desc_ring;
struct bnge_ring_struct ring_struct;
+
+ int cp_ring_count;
+ struct bnge_cp_ring_info *cp_ring_arr;
};
struct bnge_rx_ring_info {
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_resc.c b/drivers/net/ethernet/broadcom/bnge/bnge_resc.c
index c79a3607a1b..5597af1b3b7 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_resc.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_resc.c
@@ -46,7 +46,7 @@ static int bnge_aux_get_dflt_msix(struct bnge_dev *bd)
return min_t(int, roce_msix, num_online_cpus() + 1);
}
-static u16 bnge_aux_get_msix(struct bnge_dev *bd)
+u16 bnge_aux_get_msix(struct bnge_dev *bd)
{
if (bnge_is_roce_en(bd))
return bd->aux_num_msix;
--
2.47.3
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [v2, net-next 3/9] bng_en: Introduce VNIC
2025-08-18 19:47 [v2, net-next 0/9] Add more functionality to BNGE Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 1/9] bng_en: Add initial support for RX and TX rings Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 2/9] bng_en: Add initial support for CP and NQ rings Bhargava Marreddy
@ 2025-08-18 19:47 ` Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 4/9] bng_en: Initialise core resources Bhargava Marreddy
` (5 subsequent siblings)
8 siblings, 0 replies; 11+ messages in thread
From: Bhargava Marreddy @ 2025-08-18 19:47 UTC (permalink / raw)
To: davem, edumazet, kuba, pabeni, andrew+netdev, horms
Cc: netdev, linux-kernel, michael.chan, pavan.chebbi,
vsrama-krishna.nemani, Bhargava Marreddy, Vikas Gupta,
Rajashekar Hudumula
Add the VNIC-specific structures and DMA memory necessary to support
UC/MC and RSS functionality.
Signed-off-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Rajashekar Hudumula <rajashekar.hudumula@broadcom.com>
---
.../net/ethernet/broadcom/bnge/bnge_netdev.c | 130 ++++++++++++++++++
.../net/ethernet/broadcom/bnge/bnge_netdev.h | 30 ++++
2 files changed, 160 insertions(+)
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
index d8976faabd3..cc7c2aa59fe 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
@@ -428,6 +428,123 @@ static int bnge_alloc_tx_rings(struct bnge_net *bn)
return 0;
}
+static void bnge_free_vnic_attributes(struct bnge_net *bn)
+{
+ struct pci_dev *pdev = bn->bd->pdev;
+ struct bnge_vnic_info *vnic;
+ int i;
+
+ if (!bn->vnic_info)
+ return;
+
+ for (i = 0; i < bn->nr_vnics; i++) {
+ vnic = &bn->vnic_info[i];
+
+ kfree(vnic->uc_list);
+ vnic->uc_list = NULL;
+
+ if (vnic->mc_list) {
+ dma_free_coherent(&pdev->dev, vnic->mc_list_size,
+ vnic->mc_list, vnic->mc_list_mapping);
+ vnic->mc_list = NULL;
+ }
+
+ if (vnic->rss_table) {
+ dma_free_coherent(&pdev->dev, vnic->rss_table_size,
+ vnic->rss_table,
+ vnic->rss_table_dma_addr);
+ vnic->rss_table = NULL;
+ }
+
+ vnic->rss_hash_key = NULL;
+ vnic->flags = 0;
+ }
+}
+
+static int bnge_alloc_vnic_attributes(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ struct bnge_vnic_info *vnic;
+ int i, rc = 0, size;
+
+ for (i = 0; i < bn->nr_vnics; i++) {
+ vnic = &bn->vnic_info[i];
+
+ if (vnic->flags & BNGE_VNIC_UCAST_FLAG) {
+ int mem_size = (BNGE_MAX_UC_ADDRS - 1) * ETH_ALEN;
+
+ if (mem_size > 0) {
+ vnic->uc_list = kmalloc(mem_size, GFP_KERNEL);
+ if (!vnic->uc_list) {
+ rc = -ENOMEM;
+ goto out;
+ }
+ }
+ }
+
+ if (vnic->flags & BNGE_VNIC_MCAST_FLAG) {
+ vnic->mc_list_size = BNGE_MAX_MC_ADDRS * ETH_ALEN;
+ vnic->mc_list =
+ dma_alloc_coherent(bd->dev,
+ vnic->mc_list_size,
+ &vnic->mc_list_mapping,
+ GFP_KERNEL);
+ if (!vnic->mc_list) {
+ rc = -ENOMEM;
+ goto out;
+ }
+ }
+
+ /* Allocate rss table and hash key */
+ size = L1_CACHE_ALIGN(HW_HASH_INDEX_SIZE * sizeof(u16));
+ size = L1_CACHE_ALIGN(BNGE_MAX_RSS_TABLE_SIZE);
+
+ vnic->rss_table_size = size + HW_HASH_KEY_SIZE;
+ vnic->rss_table = dma_alloc_coherent(bd->dev,
+ vnic->rss_table_size,
+ &vnic->rss_table_dma_addr,
+ GFP_KERNEL);
+ if (!vnic->rss_table) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ vnic->rss_hash_key = ((void *)vnic->rss_table) + size;
+ vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr + size;
+ }
+
+ return 0;
+
+out:
+ return rc;
+}
+
+static int bnge_alloc_vnics(struct bnge_net *bn)
+{
+ int num_vnics;
+
+ /* Allocate only 1 VNIC for now
+ * Additional VNICs will be added based on RFS/NTUPLE in future patches
+ */
+ num_vnics = 1;
+
+ bn->vnic_info = kcalloc(num_vnics, sizeof(struct bnge_vnic_info),
+ GFP_KERNEL);
+ if (!bn->vnic_info)
+ return -ENOMEM;
+
+ bn->nr_vnics = num_vnics;
+
+ return 0;
+}
+
+static void bnge_free_vnics(struct bnge_net *bn)
+{
+ kfree(bn->vnic_info);
+ bn->vnic_info = NULL;
+ bn->nr_vnics = 0;
+}
+
static void bnge_free_ring_grps(struct bnge_net *bn)
{
kfree(bn->grp_info);
@@ -436,11 +553,13 @@ static void bnge_free_ring_grps(struct bnge_net *bn)
static void bnge_free_core(struct bnge_net *bn)
{
+ bnge_free_vnic_attributes(bn);
bnge_free_tx_rings(bn);
bnge_free_rx_rings(bn);
bnge_free_nq_tree(bn);
bnge_free_nq_arrays(bn);
bnge_free_ring_grps(bn);
+ bnge_free_vnics(bn);
kfree(bn->tx_ring_map);
bn->tx_ring_map = NULL;
kfree(bn->tx_ring);
@@ -528,6 +647,10 @@ static int bnge_alloc_core(struct bnge_net *bn)
txr->bnapi = bnapi2;
}
+ rc = bnge_alloc_vnics(bn);
+ if (rc)
+ goto err_free_core;
+
rc = bnge_alloc_nq_arrays(bn);
if (rc)
goto err_free_core;
@@ -546,6 +669,13 @@ static int bnge_alloc_core(struct bnge_net *bn)
if (rc)
goto err_free_core;
+ bn->vnic_info[BNGE_VNIC_DEFAULT].flags |= BNGE_VNIC_RSS_FLAG |
+ BNGE_VNIC_MCAST_FLAG |
+ BNGE_VNIC_UCAST_FLAG;
+ rc = bnge_alloc_vnic_attributes(bn);
+ if (rc)
+ goto err_free_core;
+
return 0;
err_free_core:
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
index 665a20380de..8bc0d09e041 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
@@ -177,6 +177,8 @@ struct bnge_net {
/* grp_info indexed by napi/nq index */
struct bnge_ring_grp_info *grp_info;
+ struct bnge_vnic_info *vnic_info;
+ int nr_vnics;
int total_irqs;
};
@@ -301,4 +303,32 @@ struct bnge_napi {
struct bnge_tx_ring_info *tx_ring[BNGE_MAX_TXR_PER_NAPI];
};
+#define INVALID_STATS_CTX_ID -1
+#define BNGE_VNIC_DEFAULT 0
+#define BNGE_MAX_UC_ADDRS 4
+
+struct bnge_vnic_info {
+ u8 *uc_list;
+ dma_addr_t rss_table_dma_addr;
+ __le16 *rss_table;
+ dma_addr_t rss_hash_key_dma_addr;
+ u64 *rss_hash_key;
+ int rss_table_size;
+#define BNGE_RSS_TABLE_ENTRIES 64
+#define BNGE_RSS_TABLE_SIZE (BNGE_RSS_TABLE_ENTRIES * 4)
+#define BNGE_RSS_TABLE_MAX_TBL 8
+#define BNGE_MAX_RSS_TABLE_SIZE \
+ (BNGE_RSS_TABLE_SIZE * BNGE_RSS_TABLE_MAX_TBL)
+
+ u8 *mc_list;
+ int mc_list_size;
+ int mc_list_count;
+ dma_addr_t mc_list_mapping;
+#define BNGE_MAX_MC_ADDRS 16
+
+ u32 flags;
+#define BNGE_VNIC_RSS_FLAG 1
+#define BNGE_VNIC_MCAST_FLAG 4
+#define BNGE_VNIC_UCAST_FLAG 8
+};
#endif /* _BNGE_NETDEV_H_ */
--
2.47.3
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [v2, net-next 4/9] bng_en: Initialise core resources
2025-08-18 19:47 [v2, net-next 0/9] Add more functionality to BNGE Bhargava Marreddy
` (2 preceding siblings ...)
2025-08-18 19:47 ` [v2, net-next 3/9] bng_en: Introduce VNIC Bhargava Marreddy
@ 2025-08-18 19:47 ` Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 5/9] bng_en: Allocate packet buffers Bhargava Marreddy
` (4 subsequent siblings)
8 siblings, 0 replies; 11+ messages in thread
From: Bhargava Marreddy @ 2025-08-18 19:47 UTC (permalink / raw)
To: davem, edumazet, kuba, pabeni, andrew+netdev, horms
Cc: netdev, linux-kernel, michael.chan, pavan.chebbi,
vsrama-krishna.nemani, Bhargava Marreddy, Vikas Gupta,
Rajashekar Hudumula
Add initial settings to all core resources, such as
the RX, AGG, TX, CQ, and NQ rings, as well as the VNIC.
This will help enable these resources in future patches.
Signed-off-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Rajashekar Hudumula <rajashekar.hudumula@broadcom.com>
---
.../net/ethernet/broadcom/bnge/bnge_netdev.c | 216 ++++++++++++++++++
.../net/ethernet/broadcom/bnge/bnge_netdev.h | 48 ++++
.../net/ethernet/broadcom/bnge/bnge_rmem.h | 1 +
3 files changed, 265 insertions(+)
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
index cc7c2aa59fe..a5724d389b0 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
@@ -700,6 +700,204 @@ static irqreturn_t bnge_msix(int irq, void *dev_instance)
return IRQ_HANDLED;
}
+static void bnge_init_nq_tree(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i, j;
+
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ struct bnge_nq_ring_info *nqr = &bn->bnapi[i]->nq_ring;
+ struct bnge_ring_struct *ring = &nqr->ring_struct;
+
+ ring->fw_ring_id = INVALID_HW_RING_ID;
+ if (!nqr->cp_ring_arr)
+ continue;
+ for (j = 0; j < nqr->cp_ring_count; j++) {
+ struct bnge_cp_ring_info *cpr = &nqr->cp_ring_arr[j];
+
+ ring = &cpr->ring_struct;
+ ring->fw_ring_id = INVALID_HW_RING_ID;
+ }
+ }
+}
+
+static void bnge_init_rxbd_pages(struct bnge_ring_struct *ring, u32 type)
+{
+ struct rx_bd **rx_desc_ring;
+ u32 prod;
+ int i;
+
+ rx_desc_ring = (struct rx_bd **)ring->ring_mem.pg_arr;
+ for (i = 0, prod = 0; i < ring->ring_mem.nr_pages; i++) {
+ struct rx_bd *rxbd;
+ int j;
+
+ rxbd = rx_desc_ring[i];
+ if (!rxbd)
+ continue;
+
+ for (j = 0; j < RX_DESC_CNT; j++, rxbd++, prod++) {
+ rxbd->rx_bd_len_flags_type = cpu_to_le32(type);
+ rxbd->rx_bd_opaque = prod;
+ }
+ }
+}
+
+static void bnge_init_one_rx_ring_rxbd(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr)
+{
+ struct bnge_ring_struct *ring;
+ u32 type;
+
+ type = (bn->rx_buf_use_size << RX_BD_LEN_SHIFT) |
+ RX_BD_TYPE_RX_PACKET_BD | RX_BD_FLAGS_EOP;
+
+ if (NET_IP_ALIGN == 2)
+ type |= RX_BD_FLAGS_SOP;
+
+ ring = &rxr->rx_ring_struct;
+ bnge_init_rxbd_pages(ring, type);
+ ring->fw_ring_id = INVALID_HW_RING_ID;
+}
+
+static void bnge_init_one_rx_agg_ring_rxbd(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr)
+{
+ struct bnge_ring_struct *ring;
+ u32 type;
+
+ ring = &rxr->rx_agg_ring_struct;
+ ring->fw_ring_id = INVALID_HW_RING_ID;
+ if (bnge_is_agg_reqd(bn->bd)) {
+ type = ((u32)BNGE_RX_PAGE_SIZE << RX_BD_LEN_SHIFT) |
+ RX_BD_TYPE_RX_AGG_BD | RX_BD_FLAGS_SOP;
+
+ bnge_init_rxbd_pages(ring, type);
+ }
+}
+
+static int bnge_init_one_rx_ring(struct bnge_net *bn, int ring_nr)
+{
+ struct bnge_rx_ring_info *rxr;
+
+ rxr = &bn->rx_ring[ring_nr];
+ bnge_init_one_rx_ring_rxbd(bn, rxr);
+
+ netif_queue_set_napi(bn->netdev, ring_nr, NETDEV_QUEUE_TYPE_RX,
+ &rxr->bnapi->napi);
+
+ bnge_init_one_rx_agg_ring_rxbd(bn, rxr);
+
+ return 0;
+}
+
+static int bnge_init_rx_rings(struct bnge_net *bn)
+{
+ int i, rc = 0;
+
+#define BNGE_RX_OFFSET (NET_SKB_PAD + NET_IP_ALIGN)
+#define BNGE_RX_DMA_OFFSET NET_SKB_PAD
+ bn->rx_offset = BNGE_RX_OFFSET;
+ bn->rx_dma_offset = BNGE_RX_DMA_OFFSET;
+
+ for (i = 0; i < bn->bd->rx_nr_rings; i++) {
+ rc = bnge_init_one_rx_ring(bn, i);
+ if (rc)
+ break;
+ }
+
+ return rc;
+}
+
+static int bnge_init_tx_rings(struct bnge_net *bn)
+{
+ int i;
+
+ bn->tx_wake_thresh = max_t(int, bn->tx_ring_size / 2,
+ BNGE_MIN_TX_DESC_CNT);
+
+ for (i = 0; i < bn->bd->tx_nr_rings; i++) {
+ struct bnge_tx_ring_info *txr = &bn->tx_ring[i];
+ struct bnge_ring_struct *ring = &txr->tx_ring_struct;
+
+ ring->fw_ring_id = INVALID_HW_RING_ID;
+
+ netif_queue_set_napi(bn->netdev, i, NETDEV_QUEUE_TYPE_TX,
+ &txr->bnapi->napi);
+ }
+
+ return 0;
+}
+
+static int bnge_init_ring_grps(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i;
+
+ bn->grp_info = kcalloc(bd->nq_nr_rings,
+ sizeof(struct bnge_ring_grp_info),
+ GFP_KERNEL);
+ if (!bn->grp_info)
+ return -ENOMEM;
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ bn->grp_info[i].fw_stats_ctx = INVALID_HW_RING_ID;
+ bn->grp_info[i].fw_grp_id = INVALID_HW_RING_ID;
+ bn->grp_info[i].rx_fw_ring_id = INVALID_HW_RING_ID;
+ bn->grp_info[i].agg_fw_ring_id = INVALID_HW_RING_ID;
+ bn->grp_info[i].nq_fw_ring_id = INVALID_HW_RING_ID;
+ }
+
+ return 0;
+}
+
+static void bnge_init_vnics(struct bnge_net *bn)
+{
+ struct bnge_vnic_info *vnic0 = &bn->vnic_info[BNGE_VNIC_DEFAULT];
+ int i;
+
+ for (i = 0; i < bn->nr_vnics; i++) {
+ struct bnge_vnic_info *vnic = &bn->vnic_info[i];
+ int j;
+
+ vnic->fw_vnic_id = INVALID_HW_RING_ID;
+ vnic->vnic_id = i;
+ for (j = 0; j < BNGE_MAX_CTX_PER_VNIC; j++)
+ vnic->fw_rss_cos_lb_ctx[j] = INVALID_HW_RING_ID;
+
+ if (bn->vnic_info[i].rss_hash_key) {
+ if (i == BNGE_VNIC_DEFAULT) {
+ u8 *key = (void *)vnic->rss_hash_key;
+ int k;
+
+ if (!bn->rss_hash_key_valid &&
+ !bn->rss_hash_key_updated) {
+ get_random_bytes(bn->rss_hash_key,
+ HW_HASH_KEY_SIZE);
+ bn->rss_hash_key_updated = true;
+ }
+
+ memcpy(vnic->rss_hash_key, bn->rss_hash_key,
+ HW_HASH_KEY_SIZE);
+
+ if (!bn->rss_hash_key_updated)
+ continue;
+
+ bn->rss_hash_key_updated = false;
+ bn->rss_hash_key_valid = true;
+
+ bn->toeplitz_prefix = 0;
+ for (k = 0; k < 8; k++) {
+ bn->toeplitz_prefix <<= 8;
+ bn->toeplitz_prefix |= key[k];
+ }
+ } else {
+ memcpy(vnic->rss_hash_key, vnic0->rss_hash_key,
+ HW_HASH_KEY_SIZE);
+ }
+ }
+ }
+}
+
static void bnge_setup_msix(struct bnge_net *bn)
{
struct net_device *dev = bn->netdev;
@@ -864,6 +1062,17 @@ static void bnge_free_irq(struct bnge_net *bn)
}
}
+static int bnge_init_nic(struct bnge_net *bn)
+{
+ bnge_init_nq_tree(bn);
+ bnge_init_rx_rings(bn);
+ bnge_init_tx_rings(bn);
+ bnge_init_ring_grps(bn);
+ bnge_init_vnics(bn);
+
+ return 0;
+}
+
static int bnge_open_core(struct bnge_net *bn)
{
struct bnge_dev *bd = bn->bd;
@@ -890,10 +1099,17 @@ static int bnge_open_core(struct bnge_net *bn)
goto err_del_napi;
}
+ rc = bnge_init_nic(bn);
+ if (rc) {
+ netdev_err(bn->netdev, "bnge_init_nic err: %d\n", rc);
+ goto err_free_irq;
+ }
set_bit(BNGE_STATE_OPEN, &bd->state);
return 0;
+err_free_irq:
+ bnge_free_irq(bn);
err_del_napi:
bnge_del_napi(bn);
bnge_free_core(bn);
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
index 8bc0d09e041..0859f500b3f 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
@@ -117,6 +117,20 @@ struct bnge_sw_rx_agg_bd {
dma_addr_t mapping;
};
+#define HWRM_RING_ALLOC_TX 0x1
+#define HWRM_RING_ALLOC_RX 0x2
+#define HWRM_RING_ALLOC_AGG 0x4
+#define HWRM_RING_ALLOC_CMPL 0x8
+#define HWRM_RING_ALLOC_NQ 0x10
+
+struct bnge_ring_grp_info {
+ u16 fw_stats_ctx;
+ u16 fw_grp_id;
+ u16 rx_fw_ring_id;
+ u16 agg_fw_ring_id;
+ u16 nq_fw_ring_id;
+};
+
#define BNGE_RX_COPY_THRESH 256
#define BNGE_HW_FEATURE_VLAN_ALL_RX \
@@ -132,6 +146,28 @@ enum {
#define BNGE_NET_EN_TPA (BNGE_NET_EN_GRO | BNGE_NET_EN_LRO)
+/* Minimum TX BDs for a TX packet with MAX_SKB_FRAGS + 1. We need one extra
+ * BD because the first TX BD is always a long BD.
+ */
+#define BNGE_MIN_TX_DESC_CNT (MAX_SKB_FRAGS + 2)
+
+#define RX_RING(bn, x) (((x) & (bn)->rx_ring_mask) >> (BNGE_PAGE_SHIFT - 4))
+#define RX_AGG_RING(bn, x) (((x) & (bn)->rx_agg_ring_mask) >> \
+ (BNGE_PAGE_SHIFT - 4))
+#define RX_IDX(x) ((x) & (RX_DESC_CNT - 1))
+
+#define TX_RING(bn, x) (((x) & (bn)->tx_ring_mask) >> (BNGE_PAGE_SHIFT - 4))
+#define TX_IDX(x) ((x) & (TX_DESC_CNT - 1))
+
+#define CP_RING(x) (((x) & ~(CP_DESC_CNT - 1)) >> (BNGE_PAGE_SHIFT - 4))
+#define CP_IDX(x) ((x) & (CP_DESC_CNT - 1))
+
+#define RING_RX(bn, idx) ((idx) & (bn)->rx_ring_mask)
+#define NEXT_RX(idx) ((idx) + 1)
+
+#define RING_RX_AGG(bn, idx) ((idx) & (bn)->rx_agg_ring_mask)
+#define NEXT_RX_AGG(idx) ((idx) + 1)
+
#define BNGE_NQ_HDL_TYPE_RX 0x00
#define BNGE_NQ_HDL_TYPE_TX 0x01
@@ -180,6 +216,14 @@ struct bnge_net {
struct bnge_vnic_info *vnic_info;
int nr_vnics;
int total_irqs;
+
+ int tx_wake_thresh;
+ u16 rx_offset;
+ u16 rx_dma_offset;
+
+ u8 rss_hash_key[HW_HASH_KEY_SIZE];
+ u8 rss_hash_key_valid:1;
+ u8 rss_hash_key_updated:1;
};
#define BNGE_DEFAULT_RX_RING_SIZE 511
@@ -308,6 +352,9 @@ struct bnge_napi {
#define BNGE_MAX_UC_ADDRS 4
struct bnge_vnic_info {
+ u16 fw_vnic_id;
+#define BNGE_MAX_CTX_PER_VNIC 8
+ u16 fw_rss_cos_lb_ctx[BNGE_MAX_CTX_PER_VNIC];
u8 *uc_list;
dma_addr_t rss_table_dma_addr;
__le16 *rss_table;
@@ -330,5 +377,6 @@ struct bnge_vnic_info {
#define BNGE_VNIC_RSS_FLAG 1
#define BNGE_VNIC_MCAST_FLAG 4
#define BNGE_VNIC_UCAST_FLAG 8
+ u32 vnic_id;
};
#endif /* _BNGE_NETDEV_H_ */
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h b/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h
index 162a66c7983..0e7684e2071 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h
@@ -184,6 +184,7 @@ struct bnge_ctx_mem_info {
struct bnge_ring_struct {
struct bnge_ring_mem_info ring_mem;
+ u16 fw_ring_id;
union {
u16 grp_idx;
u16 map_idx; /* Used by NQs */
--
2.47.3
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [v2, net-next 5/9] bng_en: Allocate packet buffers
2025-08-18 19:47 [v2, net-next 0/9] Add more functionality to BNGE Bhargava Marreddy
` (3 preceding siblings ...)
2025-08-18 19:47 ` [v2, net-next 4/9] bng_en: Initialise core resources Bhargava Marreddy
@ 2025-08-18 19:47 ` Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 6/9] bng_en: Allocate stat contexts Bhargava Marreddy
` (3 subsequent siblings)
8 siblings, 0 replies; 11+ messages in thread
From: Bhargava Marreddy @ 2025-08-18 19:47 UTC (permalink / raw)
To: davem, edumazet, kuba, pabeni, andrew+netdev, horms
Cc: netdev, linux-kernel, michael.chan, pavan.chebbi,
vsrama-krishna.nemani, Bhargava Marreddy, Vikas Gupta,
Rajashekar Hudumula
Populate packet buffers into the RX and AGG rings while these
rings are being initialized.
Signed-off-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Rajashekar Hudumula <rajashekar.hudumula@broadcom.com>
---
.../net/ethernet/broadcom/bnge/bnge_netdev.c | 218 +++++++++++++++++-
1 file changed, 217 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
index a5724d389b0..d1674408d6a 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
@@ -251,6 +251,76 @@ static bool bnge_separate_head_pool(struct bnge_rx_ring_info *rxr)
return rxr->need_head_pool || PAGE_SIZE > BNGE_RX_PAGE_SIZE;
}
+static void bnge_free_one_rx_ring(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr)
+{
+ int i, max_idx;
+
+ if (!rxr->rx_buf_ring)
+ return;
+
+ max_idx = bn->rx_nr_pages * RX_DESC_CNT;
+
+ for (i = 0; i < max_idx; i++) {
+ struct bnge_sw_rx_bd *rx_buf = &rxr->rx_buf_ring[i];
+ void *data = rx_buf->data;
+
+ if (!data)
+ continue;
+
+ rx_buf->data = NULL;
+ page_pool_free_va(rxr->head_pool, data, true);
+ }
+}
+
+static void bnge_free_one_rx_agg_ring(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr)
+{
+ int i, max_idx;
+
+ if (!rxr->rx_agg_buf_ring)
+ return;
+
+ max_idx = bn->rx_agg_nr_pages * RX_DESC_CNT;
+
+ for (i = 0; i < max_idx; i++) {
+ struct bnge_sw_rx_agg_bd *rx_agg_buf = &rxr->rx_agg_buf_ring[i];
+ netmem_ref netmem = rx_agg_buf->netmem;
+
+ if (!netmem)
+ continue;
+
+ rx_agg_buf->netmem = 0;
+ __clear_bit(i, rxr->rx_agg_bmap);
+
+ page_pool_recycle_direct_netmem(rxr->page_pool, netmem);
+ }
+}
+
+static void bnge_free_one_rx_pkt_mem(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr)
+{
+ bnge_free_one_rx_ring(bn, rxr);
+ bnge_free_one_rx_agg_ring(bn, rxr);
+}
+
+static void bnge_free_rx_pkt_bufs(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i;
+
+ if (!bn->rx_ring)
+ return;
+
+ for (i = 0; i < bd->rx_nr_rings; i++)
+ bnge_free_one_rx_pkt_mem(bn, &bn->rx_ring[i]);
+}
+
+static void bnge_free_pkts_mem(struct bnge_net *bn)
+{
+ bnge_free_rx_pkt_bufs(bn);
+}
+
static void bnge_free_rx_rings(struct bnge_net *bn)
{
struct bnge_dev *bd = bn->bd;
@@ -721,6 +791,151 @@ static void bnge_init_nq_tree(struct bnge_net *bn)
}
}
+static netmem_ref __bnge_alloc_rx_netmem(struct bnge_net *bn,
+ dma_addr_t *mapping,
+ struct bnge_rx_ring_info *rxr,
+ gfp_t gfp)
+{
+ netmem_ref netmem;
+
+ netmem = page_pool_alloc_netmems(rxr->page_pool, gfp);
+ if (!netmem)
+ return 0;
+
+ *mapping = page_pool_get_dma_addr_netmem(netmem);
+ return netmem;
+}
+
+static u8 *__bnge_alloc_rx_frag(struct bnge_net *bn, dma_addr_t *mapping,
+ struct bnge_rx_ring_info *rxr,
+ gfp_t gfp)
+{
+ unsigned int offset;
+ struct page *page;
+
+ page = page_pool_alloc_frag(rxr->head_pool, &offset,
+ bn->rx_buf_size, gfp);
+ if (!page)
+ return NULL;
+
+ *mapping = page_pool_get_dma_addr(page) + bn->rx_dma_offset + offset;
+ return page_address(page) + offset;
+}
+
+static int bnge_alloc_rx_data(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr,
+ u16 prod, gfp_t gfp)
+{
+ struct bnge_sw_rx_bd *rx_buf = &rxr->rx_buf_ring[RING_RX(bn, prod)];
+ struct rx_bd *rxbd;
+ dma_addr_t mapping;
+ u8 *data;
+
+ rxbd = &rxr->rx_desc_ring[RX_RING(bn, prod)][RX_IDX(prod)];
+ data = __bnge_alloc_rx_frag(bn, &mapping, rxr, gfp);
+ if (!data)
+ return -ENOMEM;
+
+ rx_buf->data = data;
+ rx_buf->data_ptr = data + bn->rx_offset;
+ rx_buf->mapping = mapping;
+
+ rxbd->rx_bd_haddr = cpu_to_le64(mapping);
+
+ return 0;
+}
+
+static void bnge_alloc_one_rx_pkt_mem(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr,
+ int ring_nr)
+{
+ u32 prod;
+ int i;
+
+ prod = rxr->rx_prod;
+ for (i = 0; i < bn->rx_ring_size; i++) {
+ if (bnge_alloc_rx_data(bn, rxr, prod, GFP_KERNEL)) {
+ netdev_warn(bn->netdev, "init'ed rx ring %d with %d/%d skbs only\n",
+ ring_nr, i, bn->rx_ring_size);
+ break;
+ }
+ prod = NEXT_RX(prod);
+ }
+ rxr->rx_prod = prod;
+}
+
+static u16 bnge_find_next_agg_idx(struct bnge_rx_ring_info *rxr, u16 idx)
+{
+ u16 next, max = rxr->rx_agg_bmap_size;
+
+ next = find_next_zero_bit(rxr->rx_agg_bmap, max, idx);
+ if (next >= max)
+ next = find_first_zero_bit(rxr->rx_agg_bmap, max);
+ return next;
+}
+
+static int bnge_alloc_rx_netmem(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr,
+ u16 prod, gfp_t gfp)
+{
+ struct bnge_sw_rx_agg_bd *rx_agg_buf;
+ u16 sw_prod = rxr->rx_sw_agg_prod;
+ struct rx_bd *rxbd;
+ dma_addr_t mapping;
+ netmem_ref netmem;
+
+ rxbd = &rxr->rx_agg_desc_ring[RX_AGG_RING(bn, prod)][RX_IDX(prod)];
+ netmem = __bnge_alloc_rx_netmem(bn, &mapping, rxr, gfp);
+ if (!netmem)
+ return -ENOMEM;
+
+ if (unlikely(test_bit(sw_prod, rxr->rx_agg_bmap)))
+ sw_prod = bnge_find_next_agg_idx(rxr, sw_prod);
+
+ __set_bit(sw_prod, rxr->rx_agg_bmap);
+ rx_agg_buf = &rxr->rx_agg_buf_ring[sw_prod];
+ rxr->rx_sw_agg_prod = RING_RX_AGG(bn, NEXT_RX_AGG(sw_prod));
+
+ rx_agg_buf->netmem = netmem;
+ rx_agg_buf->mapping = mapping;
+ rxbd->rx_bd_haddr = cpu_to_le64(mapping);
+ rxbd->rx_bd_opaque = sw_prod;
+ return 0;
+}
+
+static void bnge_alloc_one_rx_ring_netmem(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr,
+ int ring_nr)
+{
+ u32 prod;
+ int i;
+
+ prod = rxr->rx_agg_prod;
+ for (i = 0; i < bn->rx_agg_ring_size; i++) {
+ if (bnge_alloc_rx_netmem(bn, rxr, prod, GFP_KERNEL)) {
+ netdev_warn(bn->netdev, "init'ed rx ring %d with %d/%d pages only\n",
+ ring_nr, i, bn->rx_ring_size);
+ break;
+ }
+ prod = NEXT_RX_AGG(prod);
+ }
+ rxr->rx_agg_prod = prod;
+}
+
+static int bnge_alloc_one_rx_ring(struct bnge_net *bn, int ring_nr)
+{
+ struct bnge_rx_ring_info *rxr = &bn->rx_ring[ring_nr];
+
+ bnge_alloc_one_rx_pkt_mem(bn, rxr, ring_nr);
+
+ if (!(bnge_is_agg_reqd(bn->bd)))
+ return 0;
+
+ bnge_alloc_one_rx_ring_netmem(bn, rxr, ring_nr);
+
+ return 0;
+}
+
static void bnge_init_rxbd_pages(struct bnge_ring_struct *ring, u32 type)
{
struct rx_bd **rx_desc_ring;
@@ -788,7 +1003,7 @@ static int bnge_init_one_rx_ring(struct bnge_net *bn, int ring_nr)
bnge_init_one_rx_agg_ring_rxbd(bn, rxr);
- return 0;
+ return bnge_alloc_one_rx_ring(bn, ring_nr);
}
static int bnge_init_rx_rings(struct bnge_net *bn)
@@ -1141,6 +1356,7 @@ static void bnge_close_core(struct bnge_net *bn)
struct bnge_dev *bd = bn->bd;
clear_bit(BNGE_STATE_OPEN, &bd->state);
+ bnge_free_pkts_mem(bn);
bnge_free_irq(bn);
bnge_del_napi(bn);
--
2.47.3
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [v2, net-next 6/9] bng_en: Allocate stat contexts
2025-08-18 19:47 [v2, net-next 0/9] Add more functionality to BNGE Bhargava Marreddy
` (4 preceding siblings ...)
2025-08-18 19:47 ` [v2, net-next 5/9] bng_en: Allocate packet buffers Bhargava Marreddy
@ 2025-08-18 19:47 ` Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 7/9] bng_en: Register rings with the firmware Bhargava Marreddy
` (2 subsequent siblings)
8 siblings, 0 replies; 11+ messages in thread
From: Bhargava Marreddy @ 2025-08-18 19:47 UTC (permalink / raw)
To: davem, edumazet, kuba, pabeni, andrew+netdev, horms
Cc: netdev, linux-kernel, michael.chan, pavan.chebbi,
vsrama-krishna.nemani, Bhargava Marreddy, Vikas Gupta,
Rajashekar Hudumula
Allocate the hardware statistics context with the firmware and
register DMA memory required for ring statistics. This helps the
driver to collect ring statistics provided by the firmware.
Signed-off-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Rajashekar Hudumula <rajashekar.hudumula@broadcom.com>
---
.../ethernet/broadcom/bnge/bnge_hwrm_lib.c | 59 +++++++++++
.../ethernet/broadcom/bnge/bnge_hwrm_lib.h | 2 +
.../net/ethernet/broadcom/bnge/bnge_netdev.c | 97 ++++++++++++++++++-
.../net/ethernet/broadcom/bnge/bnge_netdev.h | 12 +++
4 files changed, 169 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
index 5c178fade06..eb72b7ec555 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
@@ -701,3 +701,62 @@ int bnge_hwrm_queue_qportcfg(struct bnge_dev *bd)
bnge_hwrm_req_drop(bd, req);
return rc;
}
+
+void bnge_hwrm_stat_ctx_free(struct bnge_net *bn)
+{
+ struct hwrm_stat_ctx_free_input *req;
+ struct bnge_dev *bd = bn->bd;
+ int i;
+
+ if (!bn->bnapi)
+ return;
+
+ if (bnge_hwrm_req_init(bd, req, HWRM_STAT_CTX_FREE))
+ return;
+
+ bnge_hwrm_req_hold(bd, req);
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ struct bnge_napi *bnapi = bn->bnapi[i];
+ struct bnge_nq_ring_info *nqr = &bnapi->nq_ring;
+
+ if (nqr->hw_stats_ctx_id != INVALID_STATS_CTX_ID) {
+ req->stat_ctx_id = cpu_to_le32(nqr->hw_stats_ctx_id);
+ bnge_hwrm_req_send(bd, req);
+
+ nqr->hw_stats_ctx_id = INVALID_STATS_CTX_ID;
+ }
+ }
+ bnge_hwrm_req_drop(bd, req);
+}
+
+int bnge_hwrm_stat_ctx_alloc(struct bnge_net *bn)
+{
+ struct hwrm_stat_ctx_alloc_output *resp;
+ struct hwrm_stat_ctx_alloc_input *req;
+ struct bnge_dev *bd = bn->bd;
+ int rc, i;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_STAT_CTX_ALLOC);
+ if (rc)
+ return rc;
+
+ req->stats_dma_length = cpu_to_le16(bd->hw_ring_stats_size);
+ req->update_period_ms = cpu_to_le32(bn->stats_coal_ticks / 1000);
+
+ resp = bnge_hwrm_req_hold(bd, req);
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ struct bnge_napi *bnapi = bn->bnapi[i];
+ struct bnge_nq_ring_info *nqr = &bnapi->nq_ring;
+
+ req->stats_dma_addr = cpu_to_le64(nqr->stats.hw_stats_map);
+
+ rc = bnge_hwrm_req_send(bd, req);
+ if (rc)
+ break;
+
+ nqr->hw_stats_ctx_id = le32_to_cpu(resp->stat_ctx_id);
+ bn->grp_info[i].fw_stats_ctx = nqr->hw_stats_ctx_id;
+ }
+ bnge_hwrm_req_drop(bd, req);
+ return rc;
+}
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
index 6c03923eb55..1c3fd02d7e0 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
@@ -24,4 +24,6 @@ int bnge_hwrm_func_qcfg(struct bnge_dev *bd);
int bnge_hwrm_func_resc_qcaps(struct bnge_dev *bd);
int bnge_hwrm_queue_qportcfg(struct bnge_dev *bd);
+void bnge_hwrm_stat_ctx_free(struct bnge_net *bn);
+int bnge_hwrm_stat_ctx_alloc(struct bnge_net *bn);
#endif /* _BNGE_HWRM_LIB_H_ */
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
index d1674408d6a..046219c11f9 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
@@ -30,6 +30,70 @@
#define BNGE_TC_TO_RING_BASE(bd, tc) \
((tc) * (bd)->tx_nr_rings_per_tc)
+static void bnge_free_stats_mem(struct bnge_net *bn,
+ struct bnge_stats_mem *stats)
+{
+ struct bnge_dev *bd = bn->bd;
+
+ if (stats->hw_stats) {
+ dma_free_coherent(bd->dev, stats->len, stats->hw_stats,
+ stats->hw_stats_map);
+ stats->hw_stats = NULL;
+ }
+}
+
+static int bnge_alloc_stats_mem(struct bnge_net *bn,
+ struct bnge_stats_mem *stats)
+{
+ struct bnge_dev *bd = bn->bd;
+
+ stats->hw_stats = dma_alloc_coherent(bd->dev, stats->len,
+ &stats->hw_stats_map, GFP_KERNEL);
+ if (!stats->hw_stats)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void bnge_free_ring_stats(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i;
+
+ if (!bn->bnapi)
+ return;
+
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ struct bnge_napi *bnapi = bn->bnapi[i];
+ struct bnge_nq_ring_info *nqr = &bnapi->nq_ring;
+
+ bnge_free_stats_mem(bn, &nqr->stats);
+ }
+}
+
+static int bnge_alloc_ring_stats(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ u32 size, i;
+ int rc;
+
+ size = bd->hw_ring_stats_size;
+
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ struct bnge_napi *bnapi = bn->bnapi[i];
+ struct bnge_nq_ring_info *nqr = &bnapi->nq_ring;
+
+ nqr->stats.len = size;
+ rc = bnge_alloc_stats_mem(bn, &nqr->stats);
+ if (rc)
+ return rc;
+
+ nqr->hw_stats_ctx_id = INVALID_STATS_CTX_ID;
+ }
+
+ return 0;
+}
+
static void bnge_free_nq_desc_arr(struct bnge_nq_ring_info *nqr)
{
struct bnge_ring_struct *ring = &nqr->ring_struct;
@@ -628,6 +692,7 @@ static void bnge_free_core(struct bnge_net *bn)
bnge_free_rx_rings(bn);
bnge_free_nq_tree(bn);
bnge_free_nq_arrays(bn);
+ bnge_free_ring_stats(bn);
bnge_free_ring_grps(bn);
bnge_free_vnics(bn);
kfree(bn->tx_ring_map);
@@ -717,6 +782,10 @@ static int bnge_alloc_core(struct bnge_net *bn)
txr->bnapi = bnapi2;
}
+ rc = bnge_alloc_ring_stats(bn);
+ if (rc)
+ goto err_free_core;
+
rc = bnge_alloc_vnics(bn);
if (rc)
goto err_free_core;
@@ -1164,6 +1233,11 @@ static int bnge_setup_interrupts(struct bnge_net *bn)
return bnge_set_real_num_queues(bn);
}
+static void bnge_hwrm_resource_free(struct bnge_net *bn, bool close_path)
+{
+ bnge_hwrm_stat_ctx_free(bn);
+}
+
static int bnge_request_irq(struct bnge_net *bn)
{
struct bnge_dev *bd = bn->bd;
@@ -1205,6 +1279,27 @@ static int bnge_request_irq(struct bnge_net *bn)
return rc;
}
+static int bnge_init_chip(struct bnge_net *bn)
+{
+ int rc = 0;
+
+#define BNGE_DEF_STATS_COAL_TICKS 1000000
+ bn->stats_coal_ticks = BNGE_DEF_STATS_COAL_TICKS;
+
+ rc = bnge_hwrm_stat_ctx_alloc(bn);
+ if (rc) {
+ netdev_err(bn->netdev, "hwrm stat ctx alloc failure rc: %d\n",
+ rc);
+ goto err_out;
+ }
+
+ return 0;
+err_out:
+ bnge_hwrm_resource_free(bn, 0);
+
+ return rc;
+}
+
static int bnge_napi_poll(struct napi_struct *napi, int budget)
{
int work_done = 0;
@@ -1285,7 +1380,7 @@ static int bnge_init_nic(struct bnge_net *bn)
bnge_init_ring_grps(bn);
bnge_init_vnics(bn);
- return 0;
+ return bnge_init_chip(bn);
}
static int bnge_open_core(struct bnge_net *bn)
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
index 0859f500b3f..387f68d24a4 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
@@ -224,6 +224,7 @@ struct bnge_net {
u8 rss_hash_key[HW_HASH_KEY_SIZE];
u8 rss_hash_key_valid:1;
u8 rss_hash_key_updated:1;
+ u32 stats_coal_ticks;
};
#define BNGE_DEFAULT_RX_RING_SIZE 511
@@ -270,6 +271,14 @@ void bnge_set_ring_params(struct bnge_dev *bd);
txr = (iter < BNGE_MAX_TXR_PER_NAPI - 1) ? \
(bnapi)->tx_ring[++iter] : NULL)
+struct bnge_stats_mem {
+ u64 *sw_stats;
+ u64 *hw_masks;
+ void *hw_stats;
+ dma_addr_t hw_stats_map;
+ int len;
+};
+
struct bnge_cp_ring_info {
struct bnge_napi *bnapi;
dma_addr_t *desc_mapping;
@@ -285,6 +294,9 @@ struct bnge_nq_ring_info {
struct nqe_cn **desc_ring;
struct bnge_ring_struct ring_struct;
+ struct bnge_stats_mem stats;
+ u32 hw_stats_ctx_id;
+
int cp_ring_count;
struct bnge_cp_ring_info *cp_ring_arr;
};
--
2.47.3
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [v2, net-next 7/9] bng_en: Register rings with the firmware
2025-08-18 19:47 [v2, net-next 0/9] Add more functionality to BNGE Bhargava Marreddy
` (5 preceding siblings ...)
2025-08-18 19:47 ` [v2, net-next 6/9] bng_en: Allocate stat contexts Bhargava Marreddy
@ 2025-08-18 19:47 ` Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 8/9] bng_en: Register default VNIC Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 9/9] bng_en: Configure " Bhargava Marreddy
8 siblings, 0 replies; 11+ messages in thread
From: Bhargava Marreddy @ 2025-08-18 19:47 UTC (permalink / raw)
To: davem, edumazet, kuba, pabeni, andrew+netdev, horms
Cc: netdev, linux-kernel, michael.chan, pavan.chebbi,
vsrama-krishna.nemani, Bhargava Marreddy, Vikas Gupta,
Rajashekar Hudumula
Enable ring functionality by registering RX, AGG, TX, CMPL, and
NQ rings with the firmware. Initialise the doorbells associated
with the rings.
Signed-off-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Rajashekar Hudumula <rajashekar.hudumula@broadcom.com>
---
drivers/net/ethernet/broadcom/bnge/bnge.h | 24 ++
.../net/ethernet/broadcom/bnge/bnge_core.c | 4 +
drivers/net/ethernet/broadcom/bnge/bnge_db.h | 34 ++
.../ethernet/broadcom/bnge/bnge_hwrm_lib.c | 147 ++++++++
.../ethernet/broadcom/bnge/bnge_hwrm_lib.h | 6 +
.../net/ethernet/broadcom/bnge/bnge_netdev.c | 349 ++++++++++++++++++
.../net/ethernet/broadcom/bnge/bnge_netdev.h | 16 +
.../net/ethernet/broadcom/bnge/bnge_rmem.h | 1 +
8 files changed, 581 insertions(+)
create mode 100644 drivers/net/ethernet/broadcom/bnge/bnge_db.h
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge.h b/drivers/net/ethernet/broadcom/bnge/bnge.h
index c536c0cc66e..aee65a6c980 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge.h
@@ -102,6 +102,10 @@ struct bnge_dev {
u16 chip_num;
u8 chip_rev;
+#if BITS_PER_LONG == 32
+ /* ensure atomic 64-bit doorbell writes on 32-bit systems. */
+ spinlock_t db_lock;
+#endif
int db_offset; /* db_offset within db_size */
int db_size;
@@ -214,6 +218,26 @@ static inline bool bnge_is_agg_reqd(struct bnge_dev *bd)
return true;
}
+static inline void bnge_writeq(struct bnge_dev *bd, u64 val,
+ void __iomem *addr)
+{
+#if BITS_PER_LONG == 32
+ spin_lock(&bd->db_lock);
+ lo_hi_writeq(val, addr);
+ spin_unlock(&bd->db_lock);
+#else
+ writeq(val, addr);
+#endif
+}
+
+/* For TX and RX ring doorbells */
+static inline void bnge_db_write(struct bnge_dev *bd, struct bnge_db_info *db,
+ u32 idx)
+{
+ bnge_writeq(bd, db->db_key64 | DB_RING_IDX(db, idx),
+ db->doorbell);
+}
+
bool bnge_aux_registered(struct bnge_dev *bd);
u16 bnge_aux_get_msix(struct bnge_dev *bd);
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_core.c b/drivers/net/ethernet/broadcom/bnge/bnge_core.c
index 68da656f289..304b1e4d5a0 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_core.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_core.c
@@ -296,6 +296,10 @@ static int bnge_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_config_uninit;
}
+#if BITS_PER_LONG == 32
+ spin_lock_init(&bd->db_lock);
+#endif
+
rc = bnge_alloc_irqs(bd);
if (rc) {
dev_err(&pdev->dev, "Error IRQ allocation rc = %d\n", rc);
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_db.h b/drivers/net/ethernet/broadcom/bnge/bnge_db.h
new file mode 100644
index 00000000000..950ed582f1d
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_db.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2025 Broadcom */
+
+#ifndef _BNGE_DB_H_
+#define _BNGE_DB_H_
+
+/* 64-bit doorbell */
+#define DBR_EPOCH_SFT 24
+#define DBR_TOGGLE_SFT 25
+#define DBR_XID_SFT 32
+#define DBR_PATH_L2 (0x1ULL << 56)
+#define DBR_VALID (0x1ULL << 58)
+#define DBR_TYPE_SQ (0x0ULL << 60)
+#define DBR_TYPE_SRQ (0x2ULL << 60)
+#define DBR_TYPE_CQ (0x4ULL << 60)
+#define DBR_TYPE_CQ_ARMALL (0x6ULL << 60)
+#define DBR_TYPE_NQ (0xaULL << 60)
+#define DBR_TYPE_NQ_ARM (0xbULL << 60)
+#define DBR_TYPE_NQ_MASK (0xeULL << 60)
+
+struct bnge_db_info {
+ void __iomem *doorbell;
+ u64 db_key64;
+ u32 db_ring_mask;
+ u32 db_epoch_mask;
+ u8 db_epoch_shift;
+};
+
+#define DB_EPOCH(db, idx) (((idx) & (db)->db_epoch_mask) << \
+ ((db)->db_epoch_shift))
+#define DB_RING_IDX(db, idx) (((idx) & (db)->db_ring_mask) | \
+ DB_EPOCH(db, idx))
+
+#endif /* _BNGE_DB_H_ */
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
index eb72b7ec555..4c6a2ea08f5 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
@@ -760,3 +760,150 @@ int bnge_hwrm_stat_ctx_alloc(struct bnge_net *bn)
bnge_hwrm_req_drop(bd, req);
return rc;
}
+
+int hwrm_ring_free_send_msg(struct bnge_net *bn,
+ struct bnge_ring_struct *ring,
+ u32 ring_type, int cmpl_ring_id)
+{
+ struct hwrm_ring_free_input *req;
+ struct bnge_dev *bd = bn->bd;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_RING_FREE);
+ if (rc)
+ goto exit;
+
+ req->cmpl_ring = cpu_to_le16(cmpl_ring_id);
+ req->ring_type = ring_type;
+ req->ring_id = cpu_to_le16(ring->fw_ring_id);
+
+ bnge_hwrm_req_hold(bd, req);
+ rc = bnge_hwrm_req_send(bd, req);
+ bnge_hwrm_req_drop(bd, req);
+exit:
+ if (rc) {
+ netdev_err(bd->netdev, "hwrm_ring_free type %d failed. rc:%d\n", ring_type, rc);
+ return -EIO;
+ }
+ return 0;
+}
+
+int hwrm_ring_alloc_send_msg(struct bnge_net *bn,
+ struct bnge_ring_struct *ring,
+ u32 ring_type, u32 map_index)
+{
+ struct bnge_ring_mem_info *rmem = &ring->ring_mem;
+ struct bnge_ring_grp_info *grp_info;
+ struct hwrm_ring_alloc_output *resp;
+ struct hwrm_ring_alloc_input *req;
+ struct bnge_dev *bd = bn->bd;
+ u16 ring_id, flags = 0;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_RING_ALLOC);
+ if (rc)
+ goto exit;
+
+ req->enables = 0;
+ if (rmem->nr_pages > 1) {
+ req->page_tbl_addr = cpu_to_le64(rmem->dma_pg_tbl);
+ /* Page size is in log2 units */
+ req->page_size = BNGE_PAGE_SHIFT;
+ req->page_tbl_depth = 1;
+ } else {
+ req->page_tbl_addr = cpu_to_le64(rmem->dma_arr[0]);
+ }
+ req->fbo = 0;
+ /* Association of ring index with doorbell index and MSIX number */
+ req->logical_id = cpu_to_le16(map_index);
+
+ switch (ring_type) {
+ case HWRM_RING_ALLOC_TX: {
+ struct bnge_tx_ring_info *txr;
+
+ txr = container_of(ring, struct bnge_tx_ring_info,
+ tx_ring_struct);
+ req->ring_type = RING_ALLOC_REQ_RING_TYPE_TX;
+ /* Association of transmit ring with completion ring */
+ grp_info = &bn->grp_info[ring->grp_idx];
+ req->cmpl_ring_id = cpu_to_le16(bnge_cp_ring_for_tx(txr));
+ req->length = cpu_to_le32(bn->tx_ring_mask + 1);
+ req->stat_ctx_id = cpu_to_le32(grp_info->fw_stats_ctx);
+ req->queue_id = cpu_to_le16(ring->queue_id);
+ req->flags = cpu_to_le16(flags);
+ break;
+ }
+ case HWRM_RING_ALLOC_RX:
+ req->ring_type = RING_ALLOC_REQ_RING_TYPE_RX;
+ req->length = cpu_to_le32(bn->rx_ring_mask + 1);
+
+ /* Association of rx ring with stats context */
+ grp_info = &bn->grp_info[ring->grp_idx];
+ req->rx_buf_size = cpu_to_le16(bn->rx_buf_use_size);
+ req->stat_ctx_id = cpu_to_le32(grp_info->fw_stats_ctx);
+ req->enables |=
+ cpu_to_le32(RING_ALLOC_REQ_ENABLES_RX_BUF_SIZE_VALID);
+ if (NET_IP_ALIGN == 2)
+ flags = RING_ALLOC_REQ_FLAGS_RX_SOP_PAD;
+ req->flags = cpu_to_le16(flags);
+ break;
+ case HWRM_RING_ALLOC_AGG:
+ req->ring_type = RING_ALLOC_REQ_RING_TYPE_RX_AGG;
+ /* Association of agg ring with rx ring */
+ grp_info = &bn->grp_info[ring->grp_idx];
+ req->rx_ring_id = cpu_to_le16(grp_info->rx_fw_ring_id);
+ req->rx_buf_size = cpu_to_le16(BNGE_RX_PAGE_SIZE);
+ req->stat_ctx_id = cpu_to_le32(grp_info->fw_stats_ctx);
+ req->enables |=
+ cpu_to_le32(RING_ALLOC_REQ_ENABLES_RX_RING_ID_VALID |
+ RING_ALLOC_REQ_ENABLES_RX_BUF_SIZE_VALID);
+ req->length = cpu_to_le32(bn->rx_agg_ring_mask + 1);
+ break;
+ case HWRM_RING_ALLOC_CMPL:
+ req->ring_type = RING_ALLOC_REQ_RING_TYPE_L2_CMPL;
+ req->length = cpu_to_le32(bn->cp_ring_mask + 1);
+ /* Association of cp ring with nq */
+ grp_info = &bn->grp_info[map_index];
+ req->nq_ring_id = cpu_to_le16(grp_info->nq_fw_ring_id);
+ req->cq_handle = cpu_to_le64(ring->handle);
+ req->enables |=
+ cpu_to_le32(RING_ALLOC_REQ_ENABLES_NQ_RING_ID_VALID);
+ break;
+ case HWRM_RING_ALLOC_NQ:
+ req->ring_type = RING_ALLOC_REQ_RING_TYPE_NQ;
+ req->length = cpu_to_le32(bn->cp_ring_mask + 1);
+ req->int_mode = RING_ALLOC_REQ_INT_MODE_MSIX;
+ break;
+ default:
+ netdev_err(bn->netdev, "hwrm alloc invalid ring type %d\n", ring_type);
+ return -EINVAL;
+ }
+
+ resp = bnge_hwrm_req_hold(bd, req);
+ rc = bnge_hwrm_req_send(bd, req);
+ ring_id = le16_to_cpu(resp->ring_id);
+ bnge_hwrm_req_drop(bd, req);
+
+exit:
+ if (rc) {
+ netdev_err(bd->netdev, "hwrm_ring_alloc type %d failed. rc:%d\n", ring_type, rc);
+ return -EIO;
+ }
+ ring->fw_ring_id = ring_id;
+ return rc;
+}
+
+int bnge_hwrm_set_async_event_cr(struct bnge_dev *bd, int idx)
+{
+ struct hwrm_func_cfg_input *req;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_FUNC_CFG);
+ if (rc)
+ return rc;
+
+ req->fid = cpu_to_le16(0xffff);
+ req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ASYNC_EVENT_CR);
+ req->async_event_cr = cpu_to_le16(idx);
+ return bnge_hwrm_req_send(bd, req);
+}
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
index 1c3fd02d7e0..b2e2ec47be2 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
@@ -26,4 +26,10 @@ int bnge_hwrm_queue_qportcfg(struct bnge_dev *bd);
void bnge_hwrm_stat_ctx_free(struct bnge_net *bn);
int bnge_hwrm_stat_ctx_alloc(struct bnge_net *bn);
+int hwrm_ring_free_send_msg(struct bnge_net *bn, struct bnge_ring_struct *ring,
+ u32 ring_type, int cmpl_ring_id);
+int hwrm_ring_alloc_send_msg(struct bnge_net *bn,
+ struct bnge_ring_struct *ring,
+ u32 ring_type, u32 map_index);
+int bnge_hwrm_set_async_event_cr(struct bnge_dev *bd, int idx);
#endif /* _BNGE_HWRM_LIB_H_ */
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
index 046219c11f9..c74b2343acd 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
@@ -823,6 +823,28 @@ static int bnge_alloc_core(struct bnge_net *bn)
return rc;
}
+u16 bnge_cp_ring_for_rx(struct bnge_rx_ring_info *rxr)
+{
+ return rxr->rx_cpr->ring_struct.fw_ring_id;
+}
+
+u16 bnge_cp_ring_for_tx(struct bnge_tx_ring_info *txr)
+{
+ return txr->tx_cpr->ring_struct.fw_ring_id;
+}
+
+static void bnge_db_nq(struct bnge_net *bn, struct bnge_db_info *db, u32 idx)
+{
+ bnge_writeq(bn->bd, db->db_key64 | DBR_TYPE_NQ_MASK |
+ DB_RING_IDX(db, idx), db->doorbell);
+}
+
+static void bnge_db_cq(struct bnge_net *bn, struct bnge_db_info *db, u32 idx)
+{
+ bnge_writeq(bn->bd, db->db_key64 | DBR_TYPE_CQ_ARMALL |
+ DB_RING_IDX(db, idx), db->doorbell);
+}
+
static int bnge_cp_num_to_irq_num(struct bnge_net *bn, int n)
{
struct bnge_napi *bnapi = bn->bnapi[n];
@@ -1182,6 +1204,326 @@ static void bnge_init_vnics(struct bnge_net *bn)
}
}
+static void bnge_set_db_mask(struct bnge_net *bn, struct bnge_db_info *db,
+ u32 ring_type)
+{
+ switch (ring_type) {
+ case HWRM_RING_ALLOC_TX:
+ db->db_ring_mask = bn->tx_ring_mask;
+ break;
+ case HWRM_RING_ALLOC_RX:
+ db->db_ring_mask = bn->rx_ring_mask;
+ break;
+ case HWRM_RING_ALLOC_AGG:
+ db->db_ring_mask = bn->rx_agg_ring_mask;
+ break;
+ case HWRM_RING_ALLOC_CMPL:
+ case HWRM_RING_ALLOC_NQ:
+ db->db_ring_mask = bn->cp_ring_mask;
+ break;
+ }
+ db->db_epoch_mask = db->db_ring_mask + 1;
+ db->db_epoch_shift = DBR_EPOCH_SFT - ilog2(db->db_epoch_mask);
+}
+
+static void bnge_set_db(struct bnge_net *bn, struct bnge_db_info *db,
+ u32 ring_type, u32 map_idx, u32 xid)
+{
+ struct bnge_dev *bd = bn->bd;
+
+ switch (ring_type) {
+ case HWRM_RING_ALLOC_TX:
+ db->db_key64 = DBR_PATH_L2 | DBR_TYPE_SQ;
+ break;
+ case HWRM_RING_ALLOC_RX:
+ case HWRM_RING_ALLOC_AGG:
+ db->db_key64 = DBR_PATH_L2 | DBR_TYPE_SRQ;
+ break;
+ case HWRM_RING_ALLOC_CMPL:
+ db->db_key64 = DBR_PATH_L2;
+ break;
+ case HWRM_RING_ALLOC_NQ:
+ db->db_key64 = DBR_PATH_L2;
+ break;
+ }
+ db->db_key64 |= ((u64)xid << DBR_XID_SFT) | DBR_VALID;
+
+ db->doorbell = bd->bar1 + bd->db_offset;
+ bnge_set_db_mask(bn, db, ring_type);
+}
+
+static int bnge_hwrm_cp_ring_alloc(struct bnge_net *bn,
+ struct bnge_cp_ring_info *cpr)
+{
+ const u32 type = HWRM_RING_ALLOC_CMPL;
+ struct bnge_napi *bnapi = cpr->bnapi;
+ struct bnge_ring_struct *ring;
+ u32 map_idx = bnapi->index;
+ int rc;
+
+ ring = &cpr->ring_struct;
+ ring->handle = BNGE_SET_NQ_HDL(cpr);
+ rc = hwrm_ring_alloc_send_msg(bn, ring, type, map_idx);
+ if (rc)
+ return rc;
+
+ bnge_set_db(bn, &cpr->cp_db, type, map_idx, ring->fw_ring_id);
+ bnge_db_cq(bn, &cpr->cp_db, cpr->cp_raw_cons);
+
+ return 0;
+}
+
+static int bnge_hwrm_tx_ring_alloc(struct bnge_net *bn,
+ struct bnge_tx_ring_info *txr, u32 tx_idx)
+{
+ struct bnge_ring_struct *ring = &txr->tx_ring_struct;
+ const u32 type = HWRM_RING_ALLOC_TX;
+ int rc;
+
+ rc = hwrm_ring_alloc_send_msg(bn, ring, type, tx_idx);
+ if (rc)
+ return rc;
+
+ bnge_set_db(bn, &txr->tx_db, type, tx_idx, ring->fw_ring_id);
+
+ return 0;
+}
+
+static int bnge_hwrm_rx_agg_ring_alloc(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr)
+{
+ struct bnge_ring_struct *ring = &rxr->rx_agg_ring_struct;
+ u32 type = HWRM_RING_ALLOC_AGG;
+ struct bnge_dev *bd = bn->bd;
+ u32 grp_idx = ring->grp_idx;
+ u32 map_idx;
+ int rc;
+
+ map_idx = grp_idx + bd->rx_nr_rings;
+ rc = hwrm_ring_alloc_send_msg(bn, ring, type, map_idx);
+ if (rc)
+ return rc;
+
+ bnge_set_db(bn, &rxr->rx_agg_db, type, map_idx,
+ ring->fw_ring_id);
+ bnge_db_write(bn->bd, &rxr->rx_agg_db, rxr->rx_agg_prod);
+ bnge_db_write(bn->bd, &rxr->rx_db, rxr->rx_prod);
+ bn->grp_info[grp_idx].agg_fw_ring_id = ring->fw_ring_id;
+
+ return 0;
+}
+
+static int bnge_hwrm_rx_ring_alloc(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr)
+{
+ struct bnge_ring_struct *ring = &rxr->rx_ring_struct;
+ struct bnge_napi *bnapi = rxr->bnapi;
+ u32 type = HWRM_RING_ALLOC_RX;
+ u32 map_idx = bnapi->index;
+ int rc;
+
+ rc = hwrm_ring_alloc_send_msg(bn, ring, type, map_idx);
+ if (rc)
+ return rc;
+
+ bnge_set_db(bn, &rxr->rx_db, type, map_idx, ring->fw_ring_id);
+ bn->grp_info[map_idx].rx_fw_ring_id = ring->fw_ring_id;
+
+ return 0;
+}
+
+static int bnge_hwrm_ring_alloc(struct bnge_net *bn)
+{
+ struct bnge_dev *bd = bn->bd;
+ bool agg_rings;
+ int i, rc = 0;
+
+ agg_rings = !!(bnge_is_agg_reqd(bd));
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ struct bnge_napi *bnapi = bn->bnapi[i];
+ struct bnge_nq_ring_info *nqr = &bnapi->nq_ring;
+ struct bnge_ring_struct *ring = &nqr->ring_struct;
+ u32 type = HWRM_RING_ALLOC_NQ;
+ u32 map_idx = ring->map_idx;
+ unsigned int vector;
+
+ vector = bd->irq_tbl[map_idx].vector;
+ disable_irq_nosync(vector);
+ rc = hwrm_ring_alloc_send_msg(bn, ring, type, map_idx);
+ if (rc) {
+ enable_irq(vector);
+ goto err_out;
+ }
+ bnge_set_db(bn, &nqr->nq_db, type, map_idx, ring->fw_ring_id);
+ bnge_db_nq(bn, &nqr->nq_db, nqr->nq_raw_cons);
+ enable_irq(vector);
+ bn->grp_info[i].nq_fw_ring_id = ring->fw_ring_id;
+
+ if (!i) {
+ rc = bnge_hwrm_set_async_event_cr(bd, ring->fw_ring_id);
+ if (rc)
+ netdev_warn(bn->netdev, "Failed to set async event completion ring.\n");
+ }
+ }
+
+ for (i = 0; i < bd->tx_nr_rings; i++) {
+ struct bnge_tx_ring_info *txr = &bn->tx_ring[i];
+
+ rc = bnge_hwrm_cp_ring_alloc(bn, txr->tx_cpr);
+ if (rc)
+ goto err_out;
+ rc = bnge_hwrm_tx_ring_alloc(bn, txr, i);
+ if (rc)
+ goto err_out;
+ }
+
+ for (i = 0; i < bd->rx_nr_rings; i++) {
+ struct bnge_rx_ring_info *rxr = &bn->rx_ring[i];
+ struct bnge_cp_ring_info *cpr;
+ struct bnge_ring_struct *ring;
+ struct bnge_napi *bnapi;
+ u32 map_idx, type;
+
+ rc = bnge_hwrm_rx_ring_alloc(bn, rxr);
+ if (rc)
+ goto err_out;
+ /* If we have agg rings, post agg buffers first. */
+ if (!agg_rings)
+ bnge_db_write(bn->bd, &rxr->rx_db, rxr->rx_prod);
+
+ cpr = rxr->rx_cpr;
+ bnapi = rxr->bnapi;
+ type = HWRM_RING_ALLOC_CMPL;
+ map_idx = bnapi->index;
+
+ ring = &cpr->ring_struct;
+ ring->handle = BNGE_SET_NQ_HDL(cpr);
+ rc = hwrm_ring_alloc_send_msg(bn, ring, type, map_idx);
+ if (rc)
+ goto err_out;
+ bnge_set_db(bn, &cpr->cp_db, type, map_idx,
+ ring->fw_ring_id);
+ bnge_db_cq(bn, &cpr->cp_db, cpr->cp_raw_cons);
+ }
+
+ if (agg_rings) {
+ for (i = 0; i < bd->rx_nr_rings; i++) {
+ rc = bnge_hwrm_rx_agg_ring_alloc(bn, &bn->rx_ring[i]);
+ if (rc)
+ goto err_out;
+ }
+ }
+err_out:
+ return rc;
+}
+
+static void bnge_hwrm_rx_ring_free(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr,
+ bool close_path)
+{
+ struct bnge_ring_struct *ring = &rxr->rx_ring_struct;
+ u32 grp_idx = rxr->bnapi->index;
+ u32 cmpl_ring_id;
+
+ if (ring->fw_ring_id == INVALID_HW_RING_ID)
+ return;
+
+ cmpl_ring_id = bnge_cp_ring_for_rx(rxr);
+ hwrm_ring_free_send_msg(bn, ring,
+ RING_FREE_REQ_RING_TYPE_RX,
+ close_path ? cmpl_ring_id :
+ INVALID_HW_RING_ID);
+ ring->fw_ring_id = INVALID_HW_RING_ID;
+ bn->grp_info[grp_idx].rx_fw_ring_id = INVALID_HW_RING_ID;
+}
+
+static void bnge_hwrm_rx_agg_ring_free(struct bnge_net *bn,
+ struct bnge_rx_ring_info *rxr,
+ bool close_path)
+{
+ struct bnge_ring_struct *ring = &rxr->rx_agg_ring_struct;
+ u32 grp_idx = rxr->bnapi->index;
+ u32 cmpl_ring_id;
+
+ if (ring->fw_ring_id == INVALID_HW_RING_ID)
+ return;
+
+ cmpl_ring_id = bnge_cp_ring_for_rx(rxr);
+ hwrm_ring_free_send_msg(bn, ring, RING_FREE_REQ_RING_TYPE_RX_AGG,
+ close_path ? cmpl_ring_id :
+ INVALID_HW_RING_ID);
+ ring->fw_ring_id = INVALID_HW_RING_ID;
+ bn->grp_info[grp_idx].agg_fw_ring_id = INVALID_HW_RING_ID;
+}
+
+static void bnge_hwrm_tx_ring_free(struct bnge_net *bn,
+ struct bnge_tx_ring_info *txr,
+ bool close_path)
+{
+ struct bnge_ring_struct *ring = &txr->tx_ring_struct;
+ u32 cmpl_ring_id;
+
+ if (ring->fw_ring_id == INVALID_HW_RING_ID)
+ return;
+
+ cmpl_ring_id = close_path ? bnge_cp_ring_for_tx(txr) :
+ INVALID_HW_RING_ID;
+ hwrm_ring_free_send_msg(bn, ring, RING_FREE_REQ_RING_TYPE_TX,
+ cmpl_ring_id);
+ ring->fw_ring_id = INVALID_HW_RING_ID;
+}
+
+static void bnge_hwrm_cp_ring_free(struct bnge_net *bn,
+ struct bnge_cp_ring_info *cpr)
+{
+ struct bnge_ring_struct *ring;
+
+ ring = &cpr->ring_struct;
+ if (ring->fw_ring_id == INVALID_HW_RING_ID)
+ return;
+
+ hwrm_ring_free_send_msg(bn, ring, RING_FREE_REQ_RING_TYPE_L2_CMPL,
+ INVALID_HW_RING_ID);
+ ring->fw_ring_id = INVALID_HW_RING_ID;
+}
+
+static void bnge_hwrm_ring_free(struct bnge_net *bn, bool close_path)
+{
+ struct bnge_dev *bd = bn->bd;
+ int i;
+
+ if (!bn->bnapi)
+ return;
+
+ for (i = 0; i < bd->tx_nr_rings; i++)
+ bnge_hwrm_tx_ring_free(bn, &bn->tx_ring[i], close_path);
+
+ for (i = 0; i < bd->rx_nr_rings; i++) {
+ bnge_hwrm_rx_ring_free(bn, &bn->rx_ring[i], close_path);
+ bnge_hwrm_rx_agg_ring_free(bn, &bn->rx_ring[i], close_path);
+ }
+
+ for (i = 0; i < bd->nq_nr_rings; i++) {
+ struct bnge_napi *bnapi = bn->bnapi[i];
+ struct bnge_nq_ring_info *nqr;
+ struct bnge_ring_struct *ring;
+ int j;
+
+ nqr = &bnapi->nq_ring;
+ for (j = 0; j < nqr->cp_ring_count && nqr->cp_ring_arr; j++)
+ bnge_hwrm_cp_ring_free(bn, &nqr->cp_ring_arr[j]);
+
+ ring = &nqr->ring_struct;
+ if (ring->fw_ring_id != INVALID_HW_RING_ID) {
+ hwrm_ring_free_send_msg(bn, ring,
+ RING_FREE_REQ_RING_TYPE_NQ,
+ INVALID_HW_RING_ID);
+ ring->fw_ring_id = INVALID_HW_RING_ID;
+ bn->grp_info[i].nq_fw_ring_id = INVALID_HW_RING_ID;
+ }
+ }
+}
+
static void bnge_setup_msix(struct bnge_net *bn)
{
struct net_device *dev = bn->netdev;
@@ -1235,6 +1577,7 @@ static int bnge_setup_interrupts(struct bnge_net *bn)
static void bnge_hwrm_resource_free(struct bnge_net *bn, bool close_path)
{
+ bnge_hwrm_ring_free(bn, close_path);
bnge_hwrm_stat_ctx_free(bn);
}
@@ -1293,6 +1636,12 @@ static int bnge_init_chip(struct bnge_net *bn)
goto err_out;
}
+ rc = bnge_hwrm_ring_alloc(bn);
+ if (rc) {
+ netdev_err(bn->netdev, "hwrm ring alloc failure rc: %d\n", rc);
+ goto err_out;
+ }
+
return 0;
err_out:
bnge_hwrm_resource_free(bn, 0);
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
index 387f68d24a4..b9d0e66fa6b 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
@@ -5,6 +5,8 @@
#define _BNGE_NETDEV_H_
#include <linux/bnxt/hsi.h>
+#include <linux/io-64-nonatomic-lo-hi.h>
+#include "bnge_db.h"
struct tx_bd {
__le32 tx_bd_len_flags_type;
@@ -168,6 +170,7 @@ enum {
#define RING_RX_AGG(bn, idx) ((idx) & (bn)->rx_agg_ring_mask)
#define NEXT_RX_AGG(idx) ((idx) + 1)
+#define BNGE_NQ_HDL_TYPE_SHIFT 24
#define BNGE_NQ_HDL_TYPE_RX 0x00
#define BNGE_NQ_HDL_TYPE_TX 0x01
@@ -271,6 +274,9 @@ void bnge_set_ring_params(struct bnge_dev *bd);
txr = (iter < BNGE_MAX_TXR_PER_NAPI - 1) ? \
(bnapi)->tx_ring[++iter] : NULL)
+#define BNGE_SET_NQ_HDL(cpr) \
+ (((cpr)->cp_ring_type << BNGE_NQ_HDL_TYPE_SHIFT) | (cpr)->cp_idx)
+
struct bnge_stats_mem {
u64 *sw_stats;
u64 *hw_masks;
@@ -286,6 +292,8 @@ struct bnge_cp_ring_info {
struct bnge_ring_struct ring_struct;
u8 cp_ring_type;
u8 cp_idx;
+ u32 cp_raw_cons;
+ struct bnge_db_info cp_db;
};
struct bnge_nq_ring_info {
@@ -293,6 +301,8 @@ struct bnge_nq_ring_info {
dma_addr_t *desc_mapping;
struct nqe_cn **desc_ring;
struct bnge_ring_struct ring_struct;
+ u32 nq_raw_cons;
+ struct bnge_db_info nq_db;
struct bnge_stats_mem stats;
u32 hw_stats_ctx_id;
@@ -308,6 +318,8 @@ struct bnge_rx_ring_info {
u16 rx_agg_prod;
u16 rx_sw_agg_prod;
u16 rx_next_cons;
+ struct bnge_db_info rx_db;
+ struct bnge_db_info rx_agg_db;
struct rx_bd *rx_desc_ring[MAX_RX_PAGES];
struct bnge_sw_rx_bd *rx_buf_ring;
@@ -337,6 +349,7 @@ struct bnge_tx_ring_info {
u16 txq_index;
u8 tx_napi_idx;
u8 kick_pending;
+ struct bnge_db_info tx_db;
struct tx_bd *tx_desc_ring[MAX_TX_PAGES];
struct bnge_sw_tx_bd *tx_buf_ring;
@@ -391,4 +404,7 @@ struct bnge_vnic_info {
#define BNGE_VNIC_UCAST_FLAG 8
u32 vnic_id;
};
+
+u16 bnge_cp_ring_for_rx(struct bnge_rx_ring_info *rxr);
+u16 bnge_cp_ring_for_tx(struct bnge_tx_ring_info *txr);
#endif /* _BNGE_NETDEV_H_ */
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h b/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h
index 0e7684e2071..341c7f81ed0 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_rmem.h
@@ -189,6 +189,7 @@ struct bnge_ring_struct {
u16 grp_idx;
u16 map_idx; /* Used by NQs */
};
+ u32 handle;
u8 queue_id;
};
--
2.47.3
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [v2, net-next 8/9] bng_en: Register default VNIC
2025-08-18 19:47 [v2, net-next 0/9] Add more functionality to BNGE Bhargava Marreddy
` (6 preceding siblings ...)
2025-08-18 19:47 ` [v2, net-next 7/9] bng_en: Register rings with the firmware Bhargava Marreddy
@ 2025-08-18 19:47 ` Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 9/9] bng_en: Configure " Bhargava Marreddy
8 siblings, 0 replies; 11+ messages in thread
From: Bhargava Marreddy @ 2025-08-18 19:47 UTC (permalink / raw)
To: davem, edumazet, kuba, pabeni, andrew+netdev, horms
Cc: netdev, linux-kernel, michael.chan, pavan.chebbi,
vsrama-krishna.nemani, Bhargava Marreddy, Vikas Gupta,
Rajashekar Hudumula
Allocate the default VNIC with the firmware and configure its RSS,
HDS, and Jumbo parameters. Add related functions to support VNIC
configuration for these parameters.
Signed-off-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Rajashekar Hudumula <rajashekar.hudumula@broadcom.com>
---
drivers/net/ethernet/broadcom/bnge/bnge.h | 1 +
.../net/ethernet/broadcom/bnge/bnge_core.c | 12 +
.../ethernet/broadcom/bnge/bnge_hwrm_lib.c | 207 ++++++++++++++++++
.../ethernet/broadcom/bnge/bnge_hwrm_lib.h | 19 ++
.../net/ethernet/broadcom/bnge/bnge_netdev.c | 134 ++++++++++++
.../net/ethernet/broadcom/bnge/bnge_netdev.h | 4 +
.../net/ethernet/broadcom/bnge/bnge_resc.c | 2 +-
.../net/ethernet/broadcom/bnge/bnge_resc.h | 1 +
8 files changed, 379 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge.h b/drivers/net/ethernet/broadcom/bnge/bnge.h
index aee65a6c980..7aed5f81cd5 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge.h
@@ -160,6 +160,7 @@ struct bnge_dev {
u16 rss_indir_tbl_entries;
u32 rss_cap;
+ u32 rss_hash_cfg;
u16 rx_nr_rings;
u16 tx_nr_rings;
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_core.c b/drivers/net/ethernet/broadcom/bnge/bnge_core.c
index 304b1e4d5a0..2c72dd34d50 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_core.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_core.c
@@ -96,6 +96,16 @@ static void bnge_fw_unregister_dev(struct bnge_dev *bd)
bnge_free_ctx_mem(bd);
}
+static void bnge_set_dflt_rss_hash_type(struct bnge_dev *bd)
+{
+ bd->rss_hash_cfg = VNIC_RSS_CFG_REQ_HASH_TYPE_IPV4 |
+ VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV4 |
+ VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6 |
+ VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV6 |
+ VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV4 |
+ VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV6;
+}
+
static int bnge_fw_register_dev(struct bnge_dev *bd)
{
int rc;
@@ -137,6 +147,8 @@ static int bnge_fw_register_dev(struct bnge_dev *bd)
goto err_func_unrgtr;
}
+ bnge_set_dflt_rss_hash_type(bd);
+
return 0;
err_func_unrgtr:
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
index 4c6a2ea08f5..4d3cf73cdf5 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
@@ -6,6 +6,8 @@
#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/bnxt/hsi.h>
+#include <linux/if_vlan.h>
+#include <net/netdev_queues.h>
#include "bnge.h"
#include "bnge_hwrm.h"
@@ -702,6 +704,211 @@ int bnge_hwrm_queue_qportcfg(struct bnge_dev *bd)
return rc;
}
+int bnge_hwrm_vnic_set_hds(struct bnge_net *bn, struct bnge_vnic_info *vnic)
+{
+ u16 hds_thresh = (u16)bn->netdev->cfg_pending->hds_thresh;
+ struct hwrm_vnic_plcmodes_cfg_input *req;
+ struct bnge_dev *bd = bn->bd;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_VNIC_PLCMODES_CFG);
+ if (rc)
+ return rc;
+
+ req->flags = cpu_to_le32(VNIC_PLCMODES_CFG_REQ_FLAGS_JUMBO_PLACEMENT);
+ req->enables = cpu_to_le32(BNGE_PLC_EN_JUMBO_THRES_VALID);
+ req->jumbo_thresh = cpu_to_le16(bn->rx_buf_use_size);
+
+ if (bnge_is_agg_reqd(bd)) {
+ req->flags |= cpu_to_le32(VNIC_PLCMODES_CFG_REQ_FLAGS_HDS_IPV4 |
+ VNIC_PLCMODES_CFG_REQ_FLAGS_HDS_IPV6);
+ req->enables |=
+ cpu_to_le32(BNGE_PLC_EN_HDS_THRES_VALID);
+ req->hds_threshold = cpu_to_le16(hds_thresh);
+ }
+ req->vnic_id = cpu_to_le32(vnic->fw_vnic_id);
+ return bnge_hwrm_req_send(bd, req);
+}
+
+int bnge_hwrm_vnic_ctx_alloc(struct bnge_dev *bd,
+ struct bnge_vnic_info *vnic, u16 ctx_idx)
+{
+ struct hwrm_vnic_rss_cos_lb_ctx_alloc_output *resp;
+ struct hwrm_vnic_rss_cos_lb_ctx_alloc_input *req;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_VNIC_RSS_COS_LB_CTX_ALLOC);
+ if (rc)
+ return rc;
+
+ resp = bnge_hwrm_req_hold(bd, req);
+ rc = bnge_hwrm_req_send(bd, req);
+ if (!rc)
+ vnic->fw_rss_cos_lb_ctx[ctx_idx] =
+ le16_to_cpu(resp->rss_cos_lb_ctx_id);
+ bnge_hwrm_req_drop(bd, req);
+
+ return rc;
+}
+
+static void
+__bnge_hwrm_vnic_set_rss(struct bnge_net *bn,
+ struct hwrm_vnic_rss_cfg_input *req,
+ struct bnge_vnic_info *vnic)
+{
+ struct bnge_dev *bd = bn->bd;
+
+ bnge_fill_hw_rss_tbl(bn, vnic);
+ req->flags |= VNIC_RSS_CFG_REQ_FLAGS_IPSEC_HASH_TYPE_CFG_SUPPORT;
+
+ req->hash_type = cpu_to_le32(bd->rss_hash_cfg);
+ req->hash_mode_flags = VNIC_RSS_CFG_REQ_HASH_MODE_FLAGS_DEFAULT;
+ req->ring_grp_tbl_addr = cpu_to_le64(vnic->rss_table_dma_addr);
+ req->hash_key_tbl_addr = cpu_to_le64(vnic->rss_hash_key_dma_addr);
+}
+
+int bnge_hwrm_vnic_set_rss(struct bnge_net *bn,
+ struct bnge_vnic_info *vnic, bool set_rss)
+{
+ struct hwrm_vnic_rss_cfg_input *req;
+ struct bnge_dev *bd = bn->bd;
+ dma_addr_t ring_tbl_map;
+ u32 i, nr_ctxs;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_VNIC_RSS_CFG);
+ if (rc)
+ return rc;
+
+ req->vnic_id = cpu_to_le16(vnic->fw_vnic_id);
+ if (!set_rss)
+ return bnge_hwrm_req_send(bd, req);
+
+ __bnge_hwrm_vnic_set_rss(bn, req, vnic);
+ ring_tbl_map = vnic->rss_table_dma_addr;
+ nr_ctxs = bnge_get_nr_rss_ctxs(bd->rx_nr_rings);
+
+ bnge_hwrm_req_hold(bd, req);
+ for (i = 0; i < nr_ctxs; ring_tbl_map += BNGE_RSS_TABLE_SIZE, i++) {
+ req->ring_grp_tbl_addr = cpu_to_le64(ring_tbl_map);
+ req->ring_table_pair_index = i;
+ req->rss_ctx_idx = cpu_to_le16(vnic->fw_rss_cos_lb_ctx[i]);
+ rc = bnge_hwrm_req_send(bd, req);
+ if (rc)
+ goto exit;
+ }
+
+exit:
+ bnge_hwrm_req_drop(bd, req);
+ return rc;
+}
+
+int bnge_hwrm_vnic_cfg(struct bnge_net *bn, struct bnge_vnic_info *vnic)
+{
+ struct bnge_rx_ring_info *rxr = &bn->rx_ring[0];
+ struct hwrm_vnic_cfg_input *req;
+ struct bnge_dev *bd = bn->bd;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_VNIC_CFG);
+ if (rc)
+ return rc;
+
+ req->default_rx_ring_id =
+ cpu_to_le16(rxr->rx_ring_struct.fw_ring_id);
+ req->default_cmpl_ring_id =
+ cpu_to_le16(bnge_cp_ring_for_rx(rxr));
+ req->enables =
+ cpu_to_le32(VNIC_CFG_REQ_ENABLES_DEFAULT_RX_RING_ID |
+ VNIC_CFG_REQ_ENABLES_DEFAULT_CMPL_RING_ID);
+ vnic->mru = bd->netdev->mtu + ETH_HLEN + VLAN_HLEN;
+ req->mru = cpu_to_le16(vnic->mru);
+
+ req->vnic_id = cpu_to_le16(vnic->fw_vnic_id);
+
+ if (bd->flags & BNGE_EN_STRIP_VLAN)
+ req->flags |= cpu_to_le32(VNIC_CFG_REQ_FLAGS_VLAN_STRIP_MODE);
+ if (vnic->vnic_id == BNGE_VNIC_DEFAULT && bnge_aux_registered(bd))
+ req->flags |= cpu_to_le32(BNGE_VNIC_CFG_ROCE_DUAL_MODE);
+
+ return bnge_hwrm_req_send(bd, req);
+}
+
+void bnge_hwrm_update_rss_hash_cfg(struct bnge_net *bn)
+{
+ struct bnge_vnic_info *vnic = &bn->vnic_info[BNGE_VNIC_DEFAULT];
+ struct hwrm_vnic_rss_qcfg_output *resp;
+ struct hwrm_vnic_rss_qcfg_input *req;
+ struct bnge_dev *bd = bn->bd;
+
+ if (bnge_hwrm_req_init(bd, req, HWRM_VNIC_RSS_QCFG))
+ return;
+
+ req->vnic_id = cpu_to_le16(vnic->fw_vnic_id);
+ /* all contexts configured to same hash_type, zero always exists */
+ req->rss_ctx_idx = cpu_to_le16(vnic->fw_rss_cos_lb_ctx[0]);
+ resp = bnge_hwrm_req_hold(bd, req);
+ if (!bnge_hwrm_req_send(bd, req))
+ bd->rss_hash_cfg =
+ le32_to_cpu(resp->hash_type) ?: bd->rss_hash_cfg;
+ bnge_hwrm_req_drop(bd, req);
+}
+
+int bnge_hwrm_vnic_alloc(struct bnge_dev *bd, struct bnge_vnic_info *vnic,
+ unsigned int nr_rings)
+{
+ struct hwrm_vnic_alloc_output *resp;
+ struct hwrm_vnic_alloc_input *req;
+ unsigned int i;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_VNIC_ALLOC);
+ if (rc)
+ return rc;
+
+ for (i = 0; i < BNGE_MAX_CTX_PER_VNIC; i++)
+ vnic->fw_rss_cos_lb_ctx[i] = INVALID_HW_RING_ID;
+ if (vnic->vnic_id == BNGE_VNIC_DEFAULT)
+ req->flags = cpu_to_le32(VNIC_ALLOC_REQ_FLAGS_DEFAULT);
+
+ resp = bnge_hwrm_req_hold(bd, req);
+ rc = bnge_hwrm_req_send(bd, req);
+ if (!rc)
+ vnic->fw_vnic_id = le32_to_cpu(resp->vnic_id);
+ bnge_hwrm_req_drop(bd, req);
+ return rc;
+}
+
+void bnge_hwrm_vnic_free_one(struct bnge_dev *bd, struct bnge_vnic_info *vnic)
+{
+ if (vnic->fw_vnic_id != INVALID_HW_RING_ID) {
+ struct hwrm_vnic_free_input *req;
+
+ if (bnge_hwrm_req_init(bd, req, HWRM_VNIC_FREE))
+ return;
+
+ req->vnic_id = cpu_to_le32(vnic->fw_vnic_id);
+
+ bnge_hwrm_req_send(bd, req);
+ vnic->fw_vnic_id = INVALID_HW_RING_ID;
+ }
+}
+
+void bnge_hwrm_vnic_ctx_free_one(struct bnge_dev *bd,
+ struct bnge_vnic_info *vnic, u16 ctx_idx)
+{
+ struct hwrm_vnic_rss_cos_lb_ctx_free_input *req;
+
+ if (bnge_hwrm_req_init(bd, req, HWRM_VNIC_RSS_COS_LB_CTX_FREE))
+ return;
+
+ req->rss_cos_lb_ctx_id =
+ cpu_to_le16(vnic->fw_rss_cos_lb_ctx[ctx_idx]);
+
+ bnge_hwrm_req_send(bd, req);
+ vnic->fw_rss_cos_lb_ctx[ctx_idx] = INVALID_HW_RING_ID;
+}
+
void bnge_hwrm_stat_ctx_free(struct bnge_net *bn)
{
struct hwrm_stat_ctx_free_input *req;
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
index b2e2ec47be2..09517ffb1a2 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
@@ -4,6 +4,13 @@
#ifndef _BNGE_HWRM_LIB_H_
#define _BNGE_HWRM_LIB_H_
+#define BNGE_PLC_EN_JUMBO_THRES_VALID \
+ VNIC_PLCMODES_CFG_REQ_ENABLES_JUMBO_THRESH_VALID
+#define BNGE_PLC_EN_HDS_THRES_VALID \
+ VNIC_PLCMODES_CFG_REQ_ENABLES_HDS_THRESHOLD_VALID
+#define BNGE_VNIC_CFG_ROCE_DUAL_MODE \
+ VNIC_CFG_REQ_FLAGS_ROCE_DUAL_VNIC_MODE
+
int bnge_hwrm_ver_get(struct bnge_dev *bd);
int bnge_hwrm_func_reset(struct bnge_dev *bd);
int bnge_hwrm_fw_set_time(struct bnge_dev *bd);
@@ -24,6 +31,18 @@ int bnge_hwrm_func_qcfg(struct bnge_dev *bd);
int bnge_hwrm_func_resc_qcaps(struct bnge_dev *bd);
int bnge_hwrm_queue_qportcfg(struct bnge_dev *bd);
+int bnge_hwrm_vnic_set_hds(struct bnge_net *bn, struct bnge_vnic_info *vnic);
+int bnge_hwrm_vnic_ctx_alloc(struct bnge_dev *bd,
+ struct bnge_vnic_info *vnic, u16 ctx_idx);
+int bnge_hwrm_vnic_set_rss(struct bnge_net *bn,
+ struct bnge_vnic_info *vnic, bool set_rss);
+int bnge_hwrm_vnic_cfg(struct bnge_net *bn, struct bnge_vnic_info *vnic);
+void bnge_hwrm_update_rss_hash_cfg(struct bnge_net *bn);
+int bnge_hwrm_vnic_alloc(struct bnge_dev *bd, struct bnge_vnic_info *vnic,
+ unsigned int nr_rings);
+void bnge_hwrm_vnic_free_one(struct bnge_dev *bd, struct bnge_vnic_info *vnic);
+void bnge_hwrm_vnic_ctx_free_one(struct bnge_dev *bd,
+ struct bnge_vnic_info *vnic, u16 ctx_idx);
void bnge_hwrm_stat_ctx_free(struct bnge_net *bn);
int bnge_hwrm_stat_ctx_alloc(struct bnge_net *bn);
int hwrm_ring_free_send_msg(struct bnge_net *bn, struct bnge_ring_struct *ring,
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
index c74b2343acd..10d845b091c 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
@@ -1417,6 +1417,117 @@ static int bnge_hwrm_ring_alloc(struct bnge_net *bn)
return rc;
}
+int bnge_get_nr_rss_ctxs(int rx_rings)
+{
+ if (!rx_rings)
+ return 0;
+ return bnge_adjust_pow_two(rx_rings - 1, BNGE_RSS_TABLE_ENTRIES);
+}
+
+void bnge_fill_hw_rss_tbl(struct bnge_net *bn, struct bnge_vnic_info *vnic)
+{
+ __le16 *ring_tbl = vnic->rss_table;
+ struct bnge_rx_ring_info *rxr;
+ struct bnge_dev *bd = bn->bd;
+ u16 tbl_size, i;
+
+ tbl_size = bnge_get_rxfh_indir_size(bd);
+
+ for (i = 0; i < tbl_size; i++) {
+ u16 ring_id, j;
+
+ j = bd->rss_indir_tbl[i];
+ rxr = &bn->rx_ring[j];
+
+ ring_id = rxr->rx_ring_struct.fw_ring_id;
+ *ring_tbl++ = cpu_to_le16(ring_id);
+ ring_id = bnge_cp_ring_for_rx(rxr);
+ *ring_tbl++ = cpu_to_le16(ring_id);
+ }
+}
+
+static int bnge_hwrm_vnic_rss_cfg(struct bnge_net *bn,
+ struct bnge_vnic_info *vnic)
+{
+ int rc;
+
+ rc = bnge_hwrm_vnic_set_rss(bn, vnic, true);
+ if (rc) {
+ netdev_err(bn->netdev, "hwrm vnic %d set rss failure rc: %d\n",
+ vnic->vnic_id, rc);
+ return rc;
+ }
+ rc = bnge_hwrm_vnic_cfg(bn, vnic);
+ if (rc)
+ netdev_err(bn->netdev, "hwrm vnic %d cfg failure rc: %d\n",
+ vnic->vnic_id, rc);
+ return rc;
+}
+
+static int bnge_setup_vnic(struct bnge_net *bn, struct bnge_vnic_info *vnic)
+{
+ struct bnge_dev *bd = bn->bd;
+ int rc, i, nr_ctxs;
+
+ nr_ctxs = bnge_get_nr_rss_ctxs(bd->rx_nr_rings);
+ for (i = 0; i < nr_ctxs; i++) {
+ rc = bnge_hwrm_vnic_ctx_alloc(bd, vnic, i);
+ if (rc) {
+ netdev_err(bn->netdev, "hwrm vnic %d ctx %d alloc failure rc: %d\n",
+ vnic->vnic_id, i, rc);
+ break;
+ }
+ bn->rsscos_nr_ctxs++;
+ }
+ if (i < nr_ctxs)
+ return -ENOMEM;
+
+ rc = bnge_hwrm_vnic_rss_cfg(bn, vnic);
+ if (rc)
+ return rc;
+
+ if (bnge_is_agg_reqd(bd)) {
+ rc = bnge_hwrm_vnic_set_hds(bn, vnic);
+ if (rc) {
+ netdev_err(bn->netdev, "hwrm vnic %d set hds failure rc: %d\n",
+ vnic->vnic_id, rc);
+ }
+ }
+ return rc;
+}
+
+static void bnge_hwrm_vnic_free(struct bnge_net *bn)
+{
+ int i;
+
+ for (i = 0; i < bn->nr_vnics; i++)
+ bnge_hwrm_vnic_free_one(bn->bd, &bn->vnic_info[i]);
+}
+
+static void bnge_hwrm_vnic_ctx_free(struct bnge_net *bn)
+{
+ int i, j;
+
+ for (i = 0; i < bn->nr_vnics; i++) {
+ struct bnge_vnic_info *vnic = &bn->vnic_info[i];
+
+ for (j = 0; j < BNGE_MAX_CTX_PER_VNIC; j++) {
+ if (vnic->fw_rss_cos_lb_ctx[j] != INVALID_HW_RING_ID)
+ bnge_hwrm_vnic_ctx_free_one(bn->bd, vnic, j);
+ }
+ }
+ bn->rsscos_nr_ctxs = 0;
+}
+
+static void bnge_clear_vnic(struct bnge_net *bn)
+{
+ if (!bn->vnic_info)
+ return;
+
+ bnge_hwrm_vnic_free(bn);
+ bnge_hwrm_vnic_ctx_free(bn);
+}
+
static void bnge_hwrm_rx_ring_free(struct bnge_net *bn,
struct bnge_rx_ring_info *rxr,
bool close_path)
@@ -1577,6 +1688,7 @@ static int bnge_setup_interrupts(struct bnge_net *bn)
static void bnge_hwrm_resource_free(struct bnge_net *bn, bool close_path)
{
+ bnge_clear_vnic(bn);
bnge_hwrm_ring_free(bn, close_path);
bnge_hwrm_stat_ctx_free(bn);
}
@@ -1624,6 +1736,8 @@ static int bnge_request_irq(struct bnge_net *bn)
static int bnge_init_chip(struct bnge_net *bn)
{
+ struct bnge_vnic_info *vnic = &bn->vnic_info[BNGE_VNIC_DEFAULT];
+ struct bnge_dev *bd = bn->bd;
int rc = 0;
#define BNGE_DEF_STATS_COAL_TICKS 1000000
@@ -1642,6 +1756,18 @@ static int bnge_init_chip(struct bnge_net *bn)
goto err_out;
}
+ rc = bnge_hwrm_vnic_alloc(bd, vnic, bd->rx_nr_rings);
+ if (rc) {
+ netdev_err(bn->netdev, "hwrm vnic alloc failure rc: %d\n", rc);
+ goto err_out;
+ }
+
+ rc = bnge_setup_vnic(bn, vnic);
+ if (rc)
+ goto err_out;
+ if (bd->rss_cap & BNGE_RSS_CAP_RSS_HASH_TYPE_DELTA)
+ bnge_hwrm_update_rss_hash_cfg(bn);
+
return 0;
err_out:
bnge_hwrm_resource_free(bn, 0);
@@ -1795,11 +1921,19 @@ static int bnge_open(struct net_device *dev)
return rc;
}
+static int bnge_shutdown_nic(struct bnge_net *bn)
+{
+ /* TODO: close_path = 0 until we make NAPI functional */
+ bnge_hwrm_resource_free(bn, 0);
+ return 0;
+}
+
static void bnge_close_core(struct bnge_net *bn)
{
struct bnge_dev *bd = bn->bd;
clear_bit(BNGE_STATE_OPEN, &bd->state);
+ bnge_shutdown_nic(bn);
bnge_free_pkts_mem(bn);
bnge_free_irq(bn);
bnge_del_napi(bn);
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
index b9d0e66fa6b..43c64633ed5 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
@@ -227,6 +227,7 @@ struct bnge_net {
u8 rss_hash_key[HW_HASH_KEY_SIZE];
u8 rss_hash_key_valid:1;
u8 rss_hash_key_updated:1;
+ int rsscos_nr_ctxs;
u32 stats_coal_ticks;
};
@@ -380,6 +381,7 @@ struct bnge_vnic_info {
u16 fw_vnic_id;
#define BNGE_MAX_CTX_PER_VNIC 8
u16 fw_rss_cos_lb_ctx[BNGE_MAX_CTX_PER_VNIC];
+ u16 mru;
u8 *uc_list;
dma_addr_t rss_table_dma_addr;
__le16 *rss_table;
@@ -407,4 +409,6 @@ struct bnge_vnic_info {
u16 bnge_cp_ring_for_rx(struct bnge_rx_ring_info *rxr);
u16 bnge_cp_ring_for_tx(struct bnge_tx_ring_info *txr);
+int bnge_get_nr_rss_ctxs(int rx_rings);
+void bnge_fill_hw_rss_tbl(struct bnge_net *bn, struct bnge_vnic_info *vnic);
#endif /* _BNGE_NETDEV_H_ */
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_resc.c b/drivers/net/ethernet/broadcom/bnge/bnge_resc.c
index 5597af1b3b7..e0556097593 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_resc.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_resc.c
@@ -184,7 +184,7 @@ static u16 bnge_get_total_vnics(struct bnge_dev *bd, u16 rx_rings)
return 1;
}
-static u32 bnge_get_rxfh_indir_size(struct bnge_dev *bd)
+u32 bnge_get_rxfh_indir_size(struct bnge_dev *bd)
{
return bnge_cal_nr_rss_ctxs(bd->rx_nr_rings) *
BNGE_RSS_TABLE_ENTRIES;
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_resc.h b/drivers/net/ethernet/broadcom/bnge/bnge_resc.h
index 54ef1c7d882..ad429fe6574 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_resc.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_resc.h
@@ -72,6 +72,7 @@ void bnge_free_irqs(struct bnge_dev *bd);
int bnge_net_init_dflt_config(struct bnge_dev *bd);
void bnge_net_uninit_dflt_config(struct bnge_dev *bd);
void bnge_aux_init_dflt_config(struct bnge_dev *bd);
+u32 bnge_get_rxfh_indir_size(struct bnge_dev *bd);
static inline u32
bnge_adjust_pow_two(u32 total_ent, u16 ent_per_blk)
--
2.47.3
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [v2, net-next 9/9] bng_en: Configure default VNIC
2025-08-18 19:47 [v2, net-next 0/9] Add more functionality to BNGE Bhargava Marreddy
` (7 preceding siblings ...)
2025-08-18 19:47 ` [v2, net-next 8/9] bng_en: Register default VNIC Bhargava Marreddy
@ 2025-08-18 19:47 ` Bhargava Marreddy
2025-08-19 13:03 ` Jakub Kicinski
8 siblings, 1 reply; 11+ messages in thread
From: Bhargava Marreddy @ 2025-08-18 19:47 UTC (permalink / raw)
To: davem, edumazet, kuba, pabeni, andrew+netdev, horms
Cc: netdev, linux-kernel, michael.chan, pavan.chebbi,
vsrama-krishna.nemani, Bhargava Marreddy, Vikas Gupta,
Rajashekar Hudumula
Add functions to add a filter to the VNIC to configure unicast
addresses. Also, add multicast, broadcast, and promiscuous settings
to the default VNIC.
Signed-off-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Rajashekar Hudumula <rajashekar.hudumula@broadcom.com>
---
.../ethernet/broadcom/bnge/bnge_hwrm_lib.c | 72 +++++
.../ethernet/broadcom/bnge/bnge_hwrm_lib.h | 4 +
.../net/ethernet/broadcom/bnge/bnge_netdev.c | 271 ++++++++++++++++++
.../net/ethernet/broadcom/bnge/bnge_netdev.h | 40 +++
4 files changed, 387 insertions(+)
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
index 4d3cf73cdf5..a7eb5c5e5c9 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
@@ -854,6 +854,78 @@ void bnge_hwrm_update_rss_hash_cfg(struct bnge_net *bn)
bnge_hwrm_req_drop(bd, req);
}
+int bnge_hwrm_l2_filter_free(struct bnge_dev *bd, struct bnge_l2_filter *fltr)
+{
+ struct hwrm_cfa_l2_filter_free_input *req;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_CFA_L2_FILTER_FREE);
+ if (rc)
+ return rc;
+
+ req->l2_filter_id = fltr->base.filter_id;
+ return bnge_hwrm_req_send(bd, req);
+}
+
+int bnge_hwrm_l2_filter_alloc(struct bnge_dev *bd, struct bnge_l2_filter *fltr)
+{
+ struct hwrm_cfa_l2_filter_alloc_output *resp;
+ struct hwrm_cfa_l2_filter_alloc_input *req;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_CFA_L2_FILTER_ALLOC);
+ if (rc)
+ return rc;
+
+ req->flags = cpu_to_le32(CFA_L2_FILTER_ALLOC_REQ_FLAGS_PATH_RX);
+
+ req->flags |= cpu_to_le32(CFA_L2_FILTER_ALLOC_REQ_FLAGS_OUTERMOST);
+ req->dst_id = cpu_to_le16(fltr->base.fw_vnic_id);
+ req->enables =
+ cpu_to_le32(CFA_L2_FILTER_ALLOC_REQ_ENABLES_L2_ADDR |
+ CFA_L2_FILTER_ALLOC_REQ_ENABLES_DST_ID |
+ CFA_L2_FILTER_ALLOC_REQ_ENABLES_L2_ADDR_MASK);
+ ether_addr_copy(req->l2_addr, fltr->l2_key.dst_mac_addr);
+ eth_broadcast_addr(req->l2_addr_mask);
+
+ if (fltr->l2_key.vlan) {
+ req->enables |=
+ cpu_to_le32(CFA_L2_FILTER_ALLOC_REQ_ENABLES_L2_IVLAN |
+ CFA_L2_FILTER_ALLOC_REQ_ENABLES_L2_IVLAN_MASK |
+ CFA_L2_FILTER_ALLOC_REQ_ENABLES_NUM_VLANS);
+ req->num_vlans = 1;
+ req->l2_ivlan = cpu_to_le16(fltr->l2_key.vlan);
+ req->l2_ivlan_mask = cpu_to_le16(0xfff);
+ }
+
+ resp = bnge_hwrm_req_hold(bd, req);
+ rc = bnge_hwrm_req_send(bd, req);
+ if (!rc)
+ fltr->base.filter_id = resp->l2_filter_id;
+
+ bnge_hwrm_req_drop(bd, req);
+ return rc;
+}
+
+int bnge_hwrm_cfa_l2_set_rx_mask(struct bnge_dev *bd,
+ struct bnge_vnic_info *vnic)
+{
+ struct hwrm_cfa_l2_set_rx_mask_input *req;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_CFA_L2_SET_RX_MASK);
+ if (rc)
+ return rc;
+
+ req->vnic_id = cpu_to_le32(vnic->fw_vnic_id);
+ if (vnic->rx_mask & CFA_L2_SET_RX_MASK_REQ_MASK_MCAST) {
+ req->num_mc_entries = cpu_to_le32(vnic->mc_list_count);
+ req->mc_tbl_addr = cpu_to_le64(vnic->mc_list_mapping);
+ }
+ req->mask = cpu_to_le32(vnic->rx_mask);
+ return bnge_hwrm_req_send_silent(bd, req);
+}
+
int bnge_hwrm_vnic_alloc(struct bnge_dev *bd, struct bnge_vnic_info *vnic,
unsigned int nr_rings)
{
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
index 09517ffb1a2..042f28e84a0 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
@@ -43,6 +43,10 @@ int bnge_hwrm_vnic_alloc(struct bnge_dev *bd, struct bnge_vnic_info *vnic,
void bnge_hwrm_vnic_free_one(struct bnge_dev *bd, struct bnge_vnic_info *vnic);
void bnge_hwrm_vnic_ctx_free_one(struct bnge_dev *bd,
struct bnge_vnic_info *vnic, u16 ctx_idx);
+int bnge_hwrm_l2_filter_free(struct bnge_dev *bd, struct bnge_l2_filter *fltr);
+int bnge_hwrm_l2_filter_alloc(struct bnge_dev *bd, struct bnge_l2_filter *fltr);
+int bnge_hwrm_cfa_l2_set_rx_mask(struct bnge_dev *bd,
+ struct bnge_vnic_info *vnic);
void bnge_hwrm_stat_ctx_free(struct bnge_net *bn);
int bnge_hwrm_stat_ctx_alloc(struct bnge_net *bn);
int hwrm_ring_free_send_msg(struct bnge_net *bn, struct bnge_ring_struct *ring,
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
index 10d845b091c..ce802dd2e9f 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
@@ -1496,6 +1496,231 @@ static int bnge_setup_vnic(struct bnge_net *bn, struct bnge_vnic_info *vnic)
return rc;
}
+static void bnge_del_l2_filter(struct bnge_net *bn, struct bnge_l2_filter *fltr)
+{
+ if (!atomic_dec_and_test(&fltr->refcnt))
+ return;
+ hlist_del_rcu(&fltr->base.hash);
+ kfree_rcu(fltr, base.rcu);
+}
+
+static int bnge_init_l2_filter(struct bnge_net *bn, struct bnge_l2_filter *fltr,
+ struct bnge_l2_key *key, u32 idx)
+{
+ struct hlist_head *head;
+
+ ether_addr_copy(fltr->l2_key.dst_mac_addr, key->dst_mac_addr);
+ fltr->l2_key.vlan = key->vlan;
+ fltr->base.type = BNGE_FLTR_TYPE_L2;
+
+ head = &bn->l2_fltr_hash_tbl[idx];
+ hlist_add_head_rcu(&fltr->base.hash, head);
+ atomic_set(&fltr->refcnt, 1);
+ return 0;
+}
+
+static struct bnge_l2_filter *__bnge_lookup_l2_filter(struct bnge_net *bn,
+ struct bnge_l2_key *key,
+ u32 idx)
+{
+ struct bnge_l2_filter *fltr;
+ struct hlist_head *head;
+
+ head = &bn->l2_fltr_hash_tbl[idx];
+ hlist_for_each_entry_rcu(fltr, head, base.hash) {
+ struct bnge_l2_key *l2_key = &fltr->l2_key;
+
+ if (ether_addr_equal(l2_key->dst_mac_addr, key->dst_mac_addr) &&
+ l2_key->vlan == key->vlan)
+ return fltr;
+ }
+ return NULL;
+}
+
+static struct bnge_l2_filter *bnge_lookup_l2_filter(struct bnge_net *bn,
+ struct bnge_l2_key *key,
+ u32 idx)
+{
+ struct bnge_l2_filter *fltr;
+
+ rcu_read_lock();
+ fltr = __bnge_lookup_l2_filter(bn, key, idx);
+ if (fltr)
+ atomic_inc(&fltr->refcnt);
+ rcu_read_unlock();
+ return fltr;
+}
+
+static struct bnge_l2_filter *bnge_alloc_l2_filter(struct bnge_net *bn,
+ struct bnge_l2_key *key,
+ gfp_t gfp)
+{
+ struct bnge_l2_filter *fltr;
+ u32 idx;
+ int rc;
+
+ idx = jhash2(&key->filter_key, BNGE_L2_KEY_SIZE, bn->hash_seed) &
+ BNGE_L2_FLTR_HASH_MASK;
+ fltr = bnge_lookup_l2_filter(bn, key, idx);
+ if (fltr)
+ return fltr;
+
+ fltr = kzalloc(sizeof(*fltr), gfp);
+ if (!fltr)
+ return ERR_PTR(-ENOMEM);
+ rc = bnge_init_l2_filter(bn, fltr, key, idx);
+ if (rc) {
+ bnge_del_l2_filter(bn, fltr);
+ fltr = ERR_PTR(rc);
+ }
+ return fltr;
+}
+
+static int bnge_hwrm_set_vnic_filter(struct bnge_net *bn, u16 vnic_id, u16 idx,
+ const u8 *mac_addr)
+{
+ struct bnge_l2_filter *fltr;
+ struct bnge_l2_key key;
+ int rc;
+
+ ether_addr_copy(key.dst_mac_addr, mac_addr);
+ key.vlan = 0;
+ fltr = bnge_alloc_l2_filter(bn, &key, GFP_KERNEL);
+ if (IS_ERR(fltr))
+ return PTR_ERR(fltr);
+
+ fltr->base.fw_vnic_id = bn->vnic_info[vnic_id].fw_vnic_id;
+ rc = bnge_hwrm_l2_filter_alloc(bn->bd, fltr);
+ if (rc)
+ bnge_del_l2_filter(bn, fltr);
+ else
+ bn->vnic_info[vnic_id].l2_filters[idx] = fltr;
+ return rc;
+}
+
+static bool bnge_mc_list_updated(struct bnge_net *bn, u32 *rx_mask)
+{
+ struct bnge_vnic_info *vnic = &bn->vnic_info[BNGE_VNIC_DEFAULT];
+ struct net_device *dev = bn->netdev;
+ struct netdev_hw_addr *ha;
+ int mc_count = 0, off = 0;
+ bool update = false;
+ u8 *haddr;
+
+ netdev_for_each_mc_addr(ha, dev) {
+ if (mc_count >= BNGE_MAX_MC_ADDRS) {
+ *rx_mask |= CFA_L2_SET_RX_MASK_REQ_MASK_ALL_MCAST;
+ vnic->mc_list_count = 0;
+ return false;
+ }
+ haddr = ha->addr;
+ if (!ether_addr_equal(haddr, vnic->mc_list + off)) {
+ memcpy(vnic->mc_list + off, haddr, ETH_ALEN);
+ update = true;
+ }
+ off += ETH_ALEN;
+ mc_count++;
+ }
+ if (mc_count)
+ *rx_mask |= CFA_L2_SET_RX_MASK_REQ_MASK_MCAST;
+
+ if (mc_count != vnic->mc_list_count) {
+ vnic->mc_list_count = mc_count;
+ update = true;
+ }
+ return update;
+}
+
+static bool bnge_uc_list_updated(struct bnge_net *bn)
+{
+ struct bnge_vnic_info *vnic = &bn->vnic_info[BNGE_VNIC_DEFAULT];
+ struct net_device *dev = bn->netdev;
+ struct netdev_hw_addr *ha;
+ int off = 0;
+
+ if (netdev_uc_count(dev) != (vnic->uc_filter_count - 1))
+ return true;
+
+ netdev_for_each_uc_addr(ha, dev) {
+ if (!ether_addr_equal(ha->addr, vnic->uc_list + off))
+ return true;
+
+ off += ETH_ALEN;
+ }
+ return false;
+}
+
+static bool bnge_promisc_ok(struct bnge_net *bn)
+{
+ return true;
+}
+
+static int bnge_cfg_def_vnic(struct bnge_net *bn)
+{
+ struct bnge_vnic_info *vnic = &bn->vnic_info[BNGE_VNIC_DEFAULT];
+ struct net_device *dev = bn->netdev;
+ struct bnge_dev *bd = bn->bd;
+ struct netdev_hw_addr *ha;
+ int i, off = 0, rc;
+ bool uc_update;
+
+ netif_addr_lock_bh(dev);
+ uc_update = bnge_uc_list_updated(bn);
+ netif_addr_unlock_bh(dev);
+
+ if (!uc_update)
+ goto skip_uc;
+
+ for (i = 1; i < vnic->uc_filter_count; i++) {
+ struct bnge_l2_filter *fltr = vnic->l2_filters[i];
+
+ bnge_hwrm_l2_filter_free(bd, fltr);
+ bnge_del_l2_filter(bn, fltr);
+ }
+
+ vnic->uc_filter_count = 1;
+
+ netif_addr_lock_bh(dev);
+ if (netdev_uc_count(dev) > (BNGE_MAX_UC_ADDRS - 1)) {
+ vnic->rx_mask |= CFA_L2_SET_RX_MASK_REQ_MASK_PROMISCUOUS;
+ } else {
+ netdev_for_each_uc_addr(ha, dev) {
+ memcpy(vnic->uc_list + off, ha->addr, ETH_ALEN);
+ off += ETH_ALEN;
+ vnic->uc_filter_count++;
+ }
+ }
+ netif_addr_unlock_bh(dev);
+
+ for (i = 1, off = 0; i < vnic->uc_filter_count; i++, off += ETH_ALEN) {
+ rc = bnge_hwrm_set_vnic_filter(bn, 0, i, vnic->uc_list + off);
+ if (rc) {
+ netdev_err(dev, "HWRM vnic filter failure rc: %d\n", rc);
+ vnic->uc_filter_count = i;
+ return rc;
+ }
+ }
+
+skip_uc:
+ if ((vnic->rx_mask & CFA_L2_SET_RX_MASK_REQ_MASK_PROMISCUOUS) &&
+ !bnge_promisc_ok(bn))
+ vnic->rx_mask &= ~CFA_L2_SET_RX_MASK_REQ_MASK_PROMISCUOUS;
+ rc = bnge_hwrm_cfa_l2_set_rx_mask(bd, vnic);
+ if (rc && (vnic->rx_mask & CFA_L2_SET_RX_MASK_REQ_MASK_MCAST)) {
+ netdev_info(dev, "Failed setting MC filters rc: %d, turning on ALL_MCAST mode\n",
+ rc);
+ vnic->rx_mask &= ~CFA_L2_SET_RX_MASK_REQ_MASK_MCAST;
+ vnic->rx_mask |= CFA_L2_SET_RX_MASK_REQ_MASK_ALL_MCAST;
+ vnic->mc_list_count = 0;
+ rc = bnge_hwrm_cfa_l2_set_rx_mask(bd, vnic);
+ }
+ if (rc)
+ netdev_err(dev, "HWRM cfa l2 rx mask failure rc: %d\n",
+ rc);
+
+ return rc;
+}
+
static void bnge_hwrm_vnic_free(struct bnge_net *bn)
{
int i;
@@ -1519,11 +1744,27 @@ static void bnge_hwrm_vnic_ctx_free(struct bnge_net *bn)
bn->rsscos_nr_ctxs = 0;
}
+static void bnge_hwrm_clear_vnic_filter(struct bnge_net *bn)
+{
+ struct bnge_vnic_info *vnic = &bn->vnic_info[BNGE_VNIC_DEFAULT];
+ int i;
+
+ for (i = 0; i < vnic->uc_filter_count; i++) {
+ struct bnge_l2_filter *fltr = vnic->l2_filters[i];
+
+ bnge_hwrm_l2_filter_free(bn->bd, fltr);
+ bnge_del_l2_filter(bn, fltr);
+ }
+
+ vnic->uc_filter_count = 0;
+}
+
static void bnge_clear_vnic(struct bnge_net *bn)
{
if (!bn->vnic_info)
return;
+ bnge_hwrm_clear_vnic_filter(bn);
bnge_hwrm_vnic_free(bn);
bnge_hwrm_vnic_ctx_free(bn);
}
@@ -1768,6 +2009,36 @@ static int bnge_init_chip(struct bnge_net *bn)
if (bd->rss_cap & BNGE_RSS_CAP_RSS_HASH_TYPE_DELTA)
bnge_hwrm_update_rss_hash_cfg(bn);
+ /* Filter for default vnic 0 */
+ rc = bnge_hwrm_set_vnic_filter(bn, 0, 0, bn->netdev->dev_addr);
+ if (rc) {
+ netdev_err(bn->netdev, "HWRM vnic filter failure rc: %d\n", rc);
+ goto err_out;
+ }
+ vnic->uc_filter_count = 1;
+
+ vnic->rx_mask = 0;
+
+ if (bn->netdev->flags & IFF_BROADCAST)
+ vnic->rx_mask |= CFA_L2_SET_RX_MASK_REQ_MASK_BCAST;
+
+ if (bn->netdev->flags & IFF_PROMISC)
+ vnic->rx_mask |= CFA_L2_SET_RX_MASK_REQ_MASK_PROMISCUOUS;
+
+ if (bn->netdev->flags & IFF_ALLMULTI) {
+ vnic->rx_mask |= CFA_L2_SET_RX_MASK_REQ_MASK_ALL_MCAST;
+ vnic->mc_list_count = 0;
+ } else if (bn->netdev->flags & IFF_MULTICAST) {
+ u32 mask = 0;
+
+ bnge_mc_list_updated(bn, &mask);
+ vnic->rx_mask |= mask;
+ }
+
+ rc = bnge_cfg_def_vnic(bn);
+ if (rc)
+ goto err_out;
+
return 0;
err_out:
bnge_hwrm_resource_free(bn, 0);
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
index 43c64633ed5..565a10b4dab 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
@@ -382,6 +382,10 @@ struct bnge_vnic_info {
#define BNGE_MAX_CTX_PER_VNIC 8
u16 fw_rss_cos_lb_ctx[BNGE_MAX_CTX_PER_VNIC];
u16 mru;
+#define BNGE_MAX_UC_ADDRS 4
+ /* index 0 always dev_addr */
+ struct bnge_l2_filter *l2_filters[BNGE_MAX_UC_ADDRS];
+ u16 uc_filter_count;
u8 *uc_list;
dma_addr_t rss_table_dma_addr;
__le16 *rss_table;
@@ -393,6 +397,7 @@ struct bnge_vnic_info {
#define BNGE_RSS_TABLE_MAX_TBL 8
#define BNGE_MAX_RSS_TABLE_SIZE \
(BNGE_RSS_TABLE_SIZE * BNGE_RSS_TABLE_MAX_TBL)
+ u32 rx_mask;
u8 *mc_list;
int mc_list_size;
@@ -407,6 +412,41 @@ struct bnge_vnic_info {
u32 vnic_id;
};
+struct bnge_filter_base {
+ struct hlist_node hash;
+ struct list_head list;
+ __le64 filter_id;
+ u8 type;
+#define BNGE_FLTR_TYPE_L2 2
+ u8 flags;
+ u16 rxq;
+ u16 fw_vnic_id;
+ u16 vf_idx;
+ unsigned long state;
+#define BNGE_FLTR_VALID 0
+#define BNGE_FLTR_FW_DELETED 2
+
+ struct rcu_head rcu;
+};
+
+struct bnge_l2_key {
+ union {
+ struct {
+ u8 dst_mac_addr[ETH_ALEN];
+ u16 vlan;
+ };
+ u32 filter_key;
+ };
+};
+
+#define BNGE_L2_KEY_SIZE (sizeof(struct bnge_l2_key) / 4)
+struct bnge_l2_filter {
+ /* base filter must be the first member */
+ struct bnge_filter_base base;
+ struct bnge_l2_key l2_key;
+ atomic_t refcnt;
+};
+
u16 bnge_cp_ring_for_rx(struct bnge_rx_ring_info *rxr);
u16 bnge_cp_ring_for_tx(struct bnge_tx_ring_info *txr);
int bnge_get_nr_rss_ctxs(int rx_rings);
--
2.47.3
^ permalink raw reply related [flat|nested] 11+ messages in thread
* Re: [v2, net-next 9/9] bng_en: Configure default VNIC
2025-08-18 19:47 ` [v2, net-next 9/9] bng_en: Configure " Bhargava Marreddy
@ 2025-08-19 13:03 ` Jakub Kicinski
0 siblings, 0 replies; 11+ messages in thread
From: Jakub Kicinski @ 2025-08-19 13:03 UTC (permalink / raw)
To: Bhargava Marreddy
Cc: davem, edumazet, pabeni, andrew+netdev, horms, netdev,
linux-kernel, michael.chan, pavan.chebbi, vsrama-krishna.nemani,
Vikas Gupta, Rajashekar Hudumula
On Mon, 18 Aug 2025 19:47:16 +0000 Bhargava Marreddy wrote:
> +struct bnge_l2_filter {
> + /* base filter must be the first member */
> + struct bnge_filter_base base;
> + struct bnge_l2_key l2_key;
> + atomic_t refcnt;
please use refcount_t for refcounts.
--
pw-bot: cr
^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2025-08-19 13:03 UTC | newest]
Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-08-18 19:47 [v2, net-next 0/9] Add more functionality to BNGE Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 1/9] bng_en: Add initial support for RX and TX rings Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 2/9] bng_en: Add initial support for CP and NQ rings Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 3/9] bng_en: Introduce VNIC Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 4/9] bng_en: Initialise core resources Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 5/9] bng_en: Allocate packet buffers Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 6/9] bng_en: Allocate stat contexts Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 7/9] bng_en: Register rings with the firmware Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 8/9] bng_en: Register default VNIC Bhargava Marreddy
2025-08-18 19:47 ` [v2, net-next 9/9] bng_en: Configure " Bhargava Marreddy
2025-08-19 13:03 ` Jakub Kicinski
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