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-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum.c54
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum.h19
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c14
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c15
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c11
5 files changed, 64 insertions, 49 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index dee663229990..f891ddf19dbc 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -644,16 +644,25 @@ static u16 mlxsw_sp_hdroom_buf_delay_get(const struct mlxsw_sp *mlxsw_sp,
return 2 * delay_cells + mlxsw_sp_bytes_cells(mlxsw_sp, hdroom->mtu);
}
-int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
- struct mlxsw_sp_hdroom *hdroom,
- bool pause_en, struct ieee_pfc *my_pfc)
+static bool mlxsw_sp_hdroom_buf_is_used(const struct mlxsw_sp_hdroom *hdroom, int buf)
+{
+ int prio;
+
+ for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++) {
+ if (hdroom->prios.prio[prio].buf_idx == buf)
+ return true;
+ }
+ return false;
+}
+
+int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
+ struct mlxsw_sp_hdroom *hdroom)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
- u8 pfc_en = !!my_pfc ? my_pfc->pfc_en : 0;
char pbmc_pl[MLXSW_REG_PBMC_LEN];
u32 taken_headroom_cells = 0;
u32 max_headroom_cells;
- int i, j, err;
+ int i, err;
max_headroom_cells = mlxsw_sp_sb_max_headroom_cells(mlxsw_sp);
@@ -663,25 +672,14 @@ int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
return err;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
- bool configure = false;
- bool pfc = false;
+ struct mlxsw_sp_hdroom_buf *buf = &hdroom->bufs.buf[i];
u16 thres_cells;
u16 delay_cells;
u16 total_cells;
- bool lossy;
-
- for (j = 0; j < IEEE_8021QAZ_MAX_TCS; j++) {
- if (hdroom->prios.prio[j].buf_idx == i) {
- pfc = pfc_en & BIT(j);
- configure = true;
- break;
- }
- }
- if (!configure)
+ if (!mlxsw_sp_hdroom_buf_is_used(hdroom, i))
continue;
- lossy = !(pfc || pause_en);
thres_cells = mlxsw_sp_pg_buf_threshold_get(mlxsw_sp, hdroom->mtu);
thres_cells = mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, thres_cells);
delay_cells = mlxsw_sp_hdroom_buf_delay_get(mlxsw_sp, hdroom);
@@ -692,8 +690,7 @@ int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
if (taken_headroom_cells > max_headroom_cells)
return -ENOBUFS;
- mlxsw_sp_pg_buf_pack(pbmc_pl, i, total_cells,
- thres_cells, lossy);
+ mlxsw_sp_pg_buf_pack(pbmc_pl, i, total_cells, thres_cells, buf->lossy);
}
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
@@ -704,22 +701,9 @@ int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
return 0;
}
-int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
- struct mlxsw_sp_hdroom *hdroom,
- bool pause_en)
-{
- bool dcb_en = !!mlxsw_sp_port->dcb.ets;
- struct ieee_pfc *my_pfc;
-
- my_pfc = dcb_en ? mlxsw_sp_port->dcb.pfc : NULL;
-
- return __mlxsw_sp_port_headroom_set(mlxsw_sp_port, hdroom, pause_en, my_pfc);
-}
-
static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
- bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
struct mlxsw_sp_hdroom orig_hdroom;
struct mlxsw_sp_hdroom hdroom;
int err;
@@ -728,7 +712,7 @@ static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
hdroom = orig_hdroom;
hdroom.mtu = mtu;
- err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, &hdroom, pause_en);
+ err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, &hdroom);
if (err)
return err;
@@ -739,7 +723,7 @@ static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
return 0;
err_port_mtu_set:
- mlxsw_sp_port_headroom_set(mlxsw_sp_port, &orig_hdroom, pause_en);
+ mlxsw_sp_port_headroom_set(mlxsw_sp_port, &orig_hdroom);
return err;
}
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index b2677146a242..5245367d6fb2 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -430,9 +430,6 @@ enum mlxsw_sp_flood_type {
MLXSW_SP_FLOOD_TYPE_MC,
};
-int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
- struct mlxsw_sp_hdroom *hdroom,
- bool pause_en);
int mlxsw_sp_port_get_stats_raw(struct net_device *dev, int grp,
int prio, char *ppcnt_pl);
int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
@@ -446,12 +443,22 @@ struct mlxsw_sp_hdroom_prio {
u8 buf_idx;
/* Value of buf_idx deduced from the DCB ETS configuration. */
u8 ets_buf_idx;
+ bool lossy;
+};
+
+struct mlxsw_sp_hdroom_buf {
+ bool lossy;
};
+#define MLXSW_SP_PB_COUNT 10
+
struct mlxsw_sp_hdroom {
struct {
struct mlxsw_sp_hdroom_prio prio[IEEE_8021Q_MAX_PRIORITIES];
} prios;
+ struct {
+ struct mlxsw_sp_hdroom_buf buf[MLXSW_SP_PB_COUNT];
+ } bufs;
int delay_bytes;
int mtu;
};
@@ -497,6 +504,7 @@ u32 mlxsw_sp_cells_bytes(const struct mlxsw_sp *mlxsw_sp, u32 cells);
u32 mlxsw_sp_bytes_cells(const struct mlxsw_sp *mlxsw_sp, u32 bytes);
u32 mlxsw_sp_sb_max_headroom_cells(const struct mlxsw_sp *mlxsw_sp);
void mlxsw_sp_hdroom_prios_reset_buf_idx(struct mlxsw_sp_hdroom *hdroom);
+void mlxsw_sp_hdroom_bufs_reset_lossiness(struct mlxsw_sp_hdroom *hdroom);
extern const struct mlxsw_sp_sb_vals mlxsw_sp1_sb_vals;
extern const struct mlxsw_sp_sb_vals mlxsw_sp2_sb_vals;
@@ -538,9 +546,8 @@ int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
bool dwrr, u8 dwrr_weight);
int mlxsw_sp_port_prio_tc_set(struct mlxsw_sp_port *mlxsw_sp_port,
u8 switch_prio, u8 tclass);
-int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
- struct mlxsw_sp_hdroom *hdroom,
- bool pause_en, struct ieee_pfc *my_pfc);
+int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
+ struct mlxsw_sp_hdroom *hdroom);
int mlxsw_sp_port_ets_maxrate_set(struct mlxsw_sp_port *mlxsw_sp_port,
enum mlxsw_reg_qeec_hr hr, u8 index,
u8 next_index, u32 maxrate, u8 burst_size);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
index d029c873d63d..c30bbc62e7b0 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
@@ -340,6 +340,20 @@ void mlxsw_sp_hdroom_prios_reset_buf_idx(struct mlxsw_sp_hdroom *hdroom)
hdroom->prios.prio[prio].buf_idx = hdroom->prios.prio[prio].ets_buf_idx;
}
+void mlxsw_sp_hdroom_bufs_reset_lossiness(struct mlxsw_sp_hdroom *hdroom)
+{
+ int prio;
+ int i;
+
+ for (i = 0; i < DCBX_MAX_BUFFERS; i++)
+ hdroom->bufs.buf[i].lossy = true;
+
+ for (prio = 0; prio < IEEE_8021Q_MAX_PRIORITIES; prio++) {
+ if (!hdroom->prios.prio[prio].lossy)
+ hdroom->bufs.buf[hdroom->prios.prio[prio].buf_idx].lossy = false;
+ }
+}
+
static int mlxsw_sp_port_headroom_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
int err;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c
index e0b963bff8d4..6327a840f5e9 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c
@@ -113,7 +113,6 @@ static int mlxsw_sp_port_pg_destroy(struct mlxsw_sp_port *mlxsw_sp_port,
static int mlxsw_sp_port_headroom_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct ieee_ets *ets)
{
- bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
struct ieee_ets *my_ets = mlxsw_sp_port->dcb.ets;
struct net_device *dev = mlxsw_sp_port->dev;
struct mlxsw_sp_hdroom hdroom;
@@ -124,12 +123,12 @@ static int mlxsw_sp_port_headroom_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++)
hdroom.prios.prio[prio].ets_buf_idx = ets->prio_tc[prio];
mlxsw_sp_hdroom_prios_reset_buf_idx(&hdroom);
+ mlxsw_sp_hdroom_bufs_reset_lossiness(&hdroom);
/* Create the required PGs, but don't destroy existing ones, as
* traffic is still directed to them.
*/
- err = __mlxsw_sp_port_headroom_set(mlxsw_sp_port, &hdroom, pause_en,
- mlxsw_sp_port->dcb.pfc);
+ err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, &hdroom);
if (err) {
netdev_err(dev, "Failed to configure port's headroom\n");
return err;
@@ -613,6 +612,7 @@ static int mlxsw_sp_dcbnl_ieee_setpfc(struct net_device *dev,
bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
struct mlxsw_sp_hdroom orig_hdroom;
struct mlxsw_sp_hdroom hdroom;
+ int prio;
int err;
if (pause_en && pfc->pfc_en) {
@@ -628,7 +628,12 @@ static int mlxsw_sp_dcbnl_ieee_setpfc(struct net_device *dev,
else
hdroom.delay_bytes = 0;
- err = __mlxsw_sp_port_headroom_set(mlxsw_sp_port, &hdroom, pause_en, pfc);
+ for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++)
+ hdroom.prios.prio[prio].lossy = !(pfc->pfc_en & BIT(prio));
+
+ mlxsw_sp_hdroom_bufs_reset_lossiness(&hdroom);
+
+ err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, &hdroom);
if (err) {
netdev_err(dev, "Failed to configure port's headroom for PFC\n");
return err;
@@ -646,7 +651,7 @@ static int mlxsw_sp_dcbnl_ieee_setpfc(struct net_device *dev,
return 0;
err_port_pfc_set:
- __mlxsw_sp_port_headroom_set(mlxsw_sp_port, &orig_hdroom, pause_en, mlxsw_sp_port->dcb.pfc);
+ mlxsw_sp_port_headroom_set(mlxsw_sp_port, &orig_hdroom);
return err;
}
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c
index 36c02c66bb14..b527391860bf 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c
@@ -204,6 +204,7 @@ static int mlxsw_sp_port_set_pauseparam(struct net_device *dev,
bool pause_en = pause->tx_pause || pause->rx_pause;
struct mlxsw_sp_hdroom orig_hdroom;
struct mlxsw_sp_hdroom hdroom;
+ int prio;
int err;
if (mlxsw_sp_port->dcb.pfc && mlxsw_sp_port->dcb.pfc->pfc_en) {
@@ -224,7 +225,12 @@ static int mlxsw_sp_port_set_pauseparam(struct net_device *dev,
else
hdroom.delay_bytes = 0;
- err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, &hdroom, pause_en);
+ for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++)
+ hdroom.prios.prio[prio].lossy = !pause_en;
+
+ mlxsw_sp_hdroom_bufs_reset_lossiness(&hdroom);
+
+ err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, &hdroom);
if (err) {
netdev_err(dev, "Failed to configure port's headroom\n");
return err;
@@ -242,8 +248,7 @@ static int mlxsw_sp_port_set_pauseparam(struct net_device *dev,
return 0;
err_port_pause_configure:
- pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
- mlxsw_sp_port_headroom_set(mlxsw_sp_port, &orig_hdroom, pause_en);
+ mlxsw_sp_port_headroom_set(mlxsw_sp_port, &orig_hdroom);
return err;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-27 16:24:49 +0000