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Message-Id: <20220724080329.2613617-13-idosch@nvidia.com>
Date: Sun, 24 Jul 2022 11:03:26 +0300
From: Ido Schimmel <idosch@...dia.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
edumazet@...gle.com, petrm@...dia.com, amcohen@...dia.com,
danieller@...dia.com, richardcochran@...il.com, mlxsw@...dia.com,
Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 12/15] mlxsw: spectrum_ptp: Use 'struct mlxsw_sp_ptp_state' per ASIC
From: Amit Cohen <amcohen@...dia.com>
Currently, there is one shared structure that holds the required
structures and details for PTP. Most of the existing fields are relevant
only for Spectrum-1 (hash table, lock for hash table, delayed work, and
more). Rename the structure to be specific for Spectrum-1 and align the
existing code. Add a common structure which includes
'struct mlxsw_sp *mlxsw_sp' and will be returned from ptp_init()
operation, as the definition is shared between all ASICs' operations.
Signed-off-by: Amit Cohen <amcohen@...dia.com>
Reviewed-by: Petr Machata <petrm@...dia.com>
Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
.../ethernet/mellanox/mlxsw/spectrum_ptp.c | 51 +++++++++++++------
1 file changed, 35 insertions(+), 16 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c
index eab3d63ad2ac..c5ceb4326074 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c
@@ -29,6 +29,10 @@
struct mlxsw_sp_ptp_state {
struct mlxsw_sp *mlxsw_sp;
+};
+
+struct mlxsw_sp1_ptp_state {
+ struct mlxsw_sp_ptp_state common;
struct rhltable unmatched_ht;
spinlock_t unmatched_lock; /* protects the HT */
struct delayed_work ht_gc_dw;
@@ -70,6 +74,13 @@ struct mlxsw_sp_ptp_clock {
struct delayed_work overflow_work;
};
+static struct mlxsw_sp1_ptp_state *
+mlxsw_sp1_ptp_state(struct mlxsw_sp *mlxsw_sp)
+{
+ return container_of(mlxsw_sp->ptp_state, struct mlxsw_sp1_ptp_state,
+ common);
+}
+
static u64 __mlxsw_sp1_ptp_read_frc(struct mlxsw_sp_ptp_clock *clock,
struct ptp_system_timestamp *sts)
{
@@ -347,7 +358,7 @@ mlxsw_sp1_ptp_unmatched_save(struct mlxsw_sp *mlxsw_sp,
u64 timestamp)
{
int cycles = MLXSW_SP1_PTP_HT_GC_TIMEOUT / MLXSW_SP1_PTP_HT_GC_INTERVAL;
- struct mlxsw_sp_ptp_state *ptp_state = mlxsw_sp->ptp_state;
+ struct mlxsw_sp1_ptp_state *ptp_state = mlxsw_sp1_ptp_state(mlxsw_sp);
struct mlxsw_sp1_ptp_unmatched *unmatched;
int err;
@@ -358,7 +369,7 @@ mlxsw_sp1_ptp_unmatched_save(struct mlxsw_sp *mlxsw_sp,
unmatched->key = key;
unmatched->skb = skb;
unmatched->timestamp = timestamp;
- unmatched->gc_cycle = mlxsw_sp->ptp_state->gc_cycle + cycles;
+ unmatched->gc_cycle = ptp_state->gc_cycle + cycles;
err = rhltable_insert(&ptp_state->unmatched_ht, &unmatched->ht_node,
mlxsw_sp1_ptp_unmatched_ht_params);
@@ -372,11 +383,12 @@ static struct mlxsw_sp1_ptp_unmatched *
mlxsw_sp1_ptp_unmatched_lookup(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp1_ptp_key key, int *p_length)
{
+ struct mlxsw_sp1_ptp_state *ptp_state = mlxsw_sp1_ptp_state(mlxsw_sp);
struct mlxsw_sp1_ptp_unmatched *unmatched, *last = NULL;
struct rhlist_head *tmp, *list;
int length = 0;
- list = rhltable_lookup(&mlxsw_sp->ptp_state->unmatched_ht, &key,
+ list = rhltable_lookup(&ptp_state->unmatched_ht, &key,
mlxsw_sp1_ptp_unmatched_ht_params);
rhl_for_each_entry_rcu(unmatched, tmp, list, ht_node) {
last = unmatched;
@@ -391,7 +403,9 @@ static int
mlxsw_sp1_ptp_unmatched_remove(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp1_ptp_unmatched *unmatched)
{
- return rhltable_remove(&mlxsw_sp->ptp_state->unmatched_ht,
+ struct mlxsw_sp1_ptp_state *ptp_state = mlxsw_sp1_ptp_state(mlxsw_sp);
+
+ return rhltable_remove(&ptp_state->unmatched_ht,
&unmatched->ht_node,
mlxsw_sp1_ptp_unmatched_ht_params);
}
@@ -480,13 +494,14 @@ static void mlxsw_sp1_ptp_got_piece(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp1_ptp_key key,
struct sk_buff *skb, u64 timestamp)
{
+ struct mlxsw_sp1_ptp_state *ptp_state = mlxsw_sp1_ptp_state(mlxsw_sp);
struct mlxsw_sp1_ptp_unmatched *unmatched;
int length;
int err;
rcu_read_lock();
- spin_lock(&mlxsw_sp->ptp_state->unmatched_lock);
+ spin_lock(&ptp_state->unmatched_lock);
unmatched = mlxsw_sp1_ptp_unmatched_lookup(mlxsw_sp, key, &length);
if (skb && unmatched && unmatched->timestamp) {
@@ -514,7 +529,7 @@ static void mlxsw_sp1_ptp_got_piece(struct mlxsw_sp *mlxsw_sp,
WARN_ON_ONCE(err);
}
- spin_unlock(&mlxsw_sp->ptp_state->unmatched_lock);
+ spin_unlock(&ptp_state->unmatched_lock);
if (unmatched)
mlxsw_sp1_ptp_unmatched_finish(mlxsw_sp, unmatched);
@@ -610,9 +625,10 @@ void mlxsw_sp1_ptp_transmitted(struct mlxsw_sp *mlxsw_sp,
}
static void
-mlxsw_sp1_ptp_ht_gc_collect(struct mlxsw_sp_ptp_state *ptp_state,
+mlxsw_sp1_ptp_ht_gc_collect(struct mlxsw_sp1_ptp_state *ptp_state,
struct mlxsw_sp1_ptp_unmatched *unmatched)
{
+ struct mlxsw_sp *mlxsw_sp = ptp_state->common.mlxsw_sp;
struct mlxsw_sp_ptp_port_dir_stats *stats;
struct mlxsw_sp_port *mlxsw_sp_port;
int err;
@@ -635,7 +651,7 @@ mlxsw_sp1_ptp_ht_gc_collect(struct mlxsw_sp_ptp_state *ptp_state,
/* The packet was matched with timestamp during the walk. */
goto out;
- mlxsw_sp_port = ptp_state->mlxsw_sp->ports[unmatched->key.local_port];
+ mlxsw_sp_port = mlxsw_sp->ports[unmatched->key.local_port];
if (mlxsw_sp_port) {
stats = unmatched->key.ingress ?
&mlxsw_sp_port->ptp.stats.rx_gcd :
@@ -652,7 +668,7 @@ mlxsw_sp1_ptp_ht_gc_collect(struct mlxsw_sp_ptp_state *ptp_state,
* netif_receive_skb(), in process context, is seen elsewhere in the
* kernel, notably in pktgen.
*/
- mlxsw_sp1_ptp_unmatched_finish(ptp_state->mlxsw_sp, unmatched);
+ mlxsw_sp1_ptp_unmatched_finish(mlxsw_sp, unmatched);
out:
local_bh_enable();
@@ -662,12 +678,12 @@ static void mlxsw_sp1_ptp_ht_gc(struct work_struct *work)
{
struct delayed_work *dwork = to_delayed_work(work);
struct mlxsw_sp1_ptp_unmatched *unmatched;
- struct mlxsw_sp_ptp_state *ptp_state;
+ struct mlxsw_sp1_ptp_state *ptp_state;
struct rhashtable_iter iter;
u32 gc_cycle;
void *obj;
- ptp_state = container_of(dwork, struct mlxsw_sp_ptp_state, ht_gc_dw);
+ ptp_state = container_of(dwork, struct mlxsw_sp1_ptp_state, ht_gc_dw);
gc_cycle = ptp_state->gc_cycle++;
rhltable_walk_enter(&ptp_state->unmatched_ht, &iter);
@@ -808,7 +824,7 @@ static int mlxsw_sp1_ptp_shaper_params_set(struct mlxsw_sp *mlxsw_sp)
struct mlxsw_sp_ptp_state *mlxsw_sp1_ptp_init(struct mlxsw_sp *mlxsw_sp)
{
- struct mlxsw_sp_ptp_state *ptp_state;
+ struct mlxsw_sp1_ptp_state *ptp_state;
u16 message_type;
int err;
@@ -819,7 +835,7 @@ struct mlxsw_sp_ptp_state *mlxsw_sp1_ptp_init(struct mlxsw_sp *mlxsw_sp)
ptp_state = kzalloc(sizeof(*ptp_state), GFP_KERNEL);
if (!ptp_state)
return ERR_PTR(-ENOMEM);
- ptp_state->mlxsw_sp = mlxsw_sp;
+ ptp_state->common.mlxsw_sp = mlxsw_sp;
spin_lock_init(&ptp_state->unmatched_lock);
@@ -852,7 +868,7 @@ struct mlxsw_sp_ptp_state *mlxsw_sp1_ptp_init(struct mlxsw_sp *mlxsw_sp)
INIT_DELAYED_WORK(&ptp_state->ht_gc_dw, mlxsw_sp1_ptp_ht_gc);
mlxsw_core_schedule_dw(&ptp_state->ht_gc_dw,
MLXSW_SP1_PTP_HT_GC_INTERVAL);
- return ptp_state;
+ return &ptp_state->common;
err_fifo_clr:
mlxsw_sp_ptp_mtptpt_set(mlxsw_sp, MLXSW_REG_MTPTPT_TRAP_ID_PTP1, 0);
@@ -865,9 +881,12 @@ struct mlxsw_sp_ptp_state *mlxsw_sp1_ptp_init(struct mlxsw_sp *mlxsw_sp)
return ERR_PTR(err);
}
-void mlxsw_sp1_ptp_fini(struct mlxsw_sp_ptp_state *ptp_state)
+void mlxsw_sp1_ptp_fini(struct mlxsw_sp_ptp_state *ptp_state_common)
{
- struct mlxsw_sp *mlxsw_sp = ptp_state->mlxsw_sp;
+ struct mlxsw_sp *mlxsw_sp = ptp_state_common->mlxsw_sp;
+ struct mlxsw_sp1_ptp_state *ptp_state;
+
+ ptp_state = mlxsw_sp1_ptp_state(mlxsw_sp);
cancel_delayed_work_sync(&ptp_state->ht_gc_dw);
mlxsw_sp1_ptp_mtpppc_set(mlxsw_sp, 0, 0);
--
2.36.1
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