Merge tag 'mlx5-updates-2021-08-16' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2021-08-16

The following patchset provides two separate mlx5 updates
1) Ethtool RSS context and MQPRIO channel mode support:
  1.1) enable mlx5e netdev driver to allow creating Transport Interface RX
       (TIRs) objects on the fly to be used for ethtool RSS contexts and
       TX MQPRIO channel mode
  1.2) Introduce mlx5e_rss object to manage such TIRs.
  1.3) Ethtool support for RSS context
  1.4) Support MQPRIO channel mode

2) Bridge offloads Lag support:
   to allow adding bond net devices to mlx5 bridge
  2.1) Address bridge port by (vport_num, esw_owner_vhca_id) pair
       since vport_num is only unique per eswitch and in lag mode we
       need to manage ports from both eswitches.
  2.2) Allow connectivity between representors of different eswitch
       instances that are attached to same bridge
  2.3) Bridge LAG, Require representors to be in shared FDB mode and
       introduce local and peer ports representors,
       match on paired eswitch metadata in peer FDB entries,
       And finally support addition/deletion and aging of peer flows.
====================

Signed-off-by: David S. Miller <[email protected]>

Author: davem330

drivers/net/ethernet/mellanox/mlx5/core/Makefile

@@ -22,13 +22,13 @@ mlx5_core-y :=	main.o cmd.o debugfs.o fw.o eq.o uar.o pagealloc.o \
 #
 # Netdev basic
 #
-mlx5_core-$(CONFIG_MLX5_CORE_EN) += en_main.o en_common.o en_fs.o en_ethtool.o \
+mlx5_core-$(CONFIG_MLX5_CORE_EN) += en/rqt.o en/tir.o en/rss.o en/rx_res.o \
+		en/channels.o en_main.o en_common.o en_fs.o en_ethtool.o \
 		en_tx.o en_rx.o en_dim.o en_txrx.o en/xdp.o en_stats.o \
 		en_selftest.o en/port.o en/monitor_stats.o en/health.o \
 		en/reporter_tx.o en/reporter_rx.o en/params.o en/xsk/pool.o \
 		en/xsk/setup.o en/xsk/rx.o en/xsk/tx.o en/devlink.o en/ptp.o \
-		en/qos.o en/trap.o en/fs_tt_redirect.o en/rqt.o en/tir.o \
-		en/rx_res.o en/channels.o
+		en/qos.o en/trap.o en/fs_tt_redirect.o
 
 #
 # Netdev extra

drivers/net/ethernet/mellanox/mlx5/core/en.h

@@ -72,6 +72,7 @@ struct page_pool;
 #define MLX5E_SW2HW_MTU(params, swmtu) ((swmtu) + ((params)->hard_mtu))
 
 #define MLX5E_MAX_NUM_TC	8
+#define MLX5E_MAX_NUM_MQPRIO_CH_TC TC_QOPT_MAX_QUEUE
 
 #define MLX5_RX_HEADROOM NET_SKB_PAD
 #define MLX5_SKB_FRAG_SZ(len)	(SKB_DATA_ALIGN(len) +	\
@@ -248,7 +249,10 @@ struct mlx5e_params {
 	u8  rq_wq_type;
 	u8  log_rq_mtu_frames;
 	u16 num_channels;
-	u8  num_tc;
+	struct {
+		u16 mode;
+		u8 num_tc;
+	} mqprio;
 	bool rx_cqe_compress_def;
 	bool tunneled_offload_en;
 	struct dim_cq_moder rx_cq_moderation;
@@ -268,6 +272,12 @@ struct mlx5e_params {
 	bool ptp_rx;
 };
 
+static inline u8 mlx5e_get_dcb_num_tc(struct mlx5e_params *params)
+{
+	return params->mqprio.mode == TC_MQPRIO_MODE_DCB ?
+		params->mqprio.num_tc : 1;
+}
+
 enum {
 	MLX5E_RQ_STATE_ENABLED,
 	MLX5E_RQ_STATE_RECOVERING,

drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c

@@ -326,13 +326,14 @@ static int mlx5e_ptp_open_txqsqs(struct mlx5e_ptp *c,
 				 struct mlx5e_ptp_params *cparams)
 {
 	struct mlx5e_params *params = &cparams->params;
+	u8 num_tc = mlx5e_get_dcb_num_tc(params);
 	int ix_base;
 	int err;
 	int tc;
 
-	ix_base = params->num_tc * params->num_channels;
+	ix_base = num_tc * params->num_channels;
 
-	for (tc = 0; tc < params->num_tc; tc++) {
+	for (tc = 0; tc < num_tc; tc++) {
 		int txq_ix = ix_base + tc;
 
 		err = mlx5e_ptp_open_txqsq(c, c->priv->tisn[c->lag_port][tc], txq_ix,
@@ -365,25 +366,28 @@ static int mlx5e_ptp_open_tx_cqs(struct mlx5e_ptp *c,
 	struct mlx5e_create_cq_param ccp = {};
 	struct dim_cq_moder ptp_moder = {};
 	struct mlx5e_cq_param *cq_param;
+	u8 num_tc;
 	int err;
 	int tc;
 
+	num_tc = mlx5e_get_dcb_num_tc(params);
+
 	ccp.node     = dev_to_node(mlx5_core_dma_dev(c->mdev));
 	ccp.ch_stats = c->stats;
 	ccp.napi     = &c->napi;
 	ccp.ix       = MLX5E_PTP_CHANNEL_IX;
 
 	cq_param = &cparams->txq_sq_param.cqp;
 
-	for (tc = 0; tc < params->num_tc; tc++) {
+	for (tc = 0; tc < num_tc; tc++) {
 		struct mlx5e_cq *cq = &c->ptpsq[tc].txqsq.cq;
 
 		err = mlx5e_open_cq(c->priv, ptp_moder, cq_param, &ccp, cq);
 		if (err)
 			goto out_err_txqsq_cq;
 	}
 
-	for (tc = 0; tc < params->num_tc; tc++) {
+	for (tc = 0; tc < num_tc; tc++) {
 		struct mlx5e_cq *cq = &c->ptpsq[tc].ts_cq;
 		struct mlx5e_ptpsq *ptpsq = &c->ptpsq[tc];
 
@@ -399,7 +403,7 @@ static int mlx5e_ptp_open_tx_cqs(struct mlx5e_ptp *c,
 out_err_ts_cq:
 	for (--tc; tc >= 0; tc--)
 		mlx5e_close_cq(&c->ptpsq[tc].ts_cq);
-	tc = params->num_tc;
+	tc = num_tc;
 out_err_txqsq_cq:
 	for (--tc; tc >= 0; tc--)
 		mlx5e_close_cq(&c->ptpsq[tc].txqsq.cq);
@@ -475,7 +479,7 @@ static void mlx5e_ptp_build_params(struct mlx5e_ptp *c,
 	params->num_channels = orig->num_channels;
 	params->hard_mtu = orig->hard_mtu;
 	params->sw_mtu = orig->sw_mtu;
-	params->num_tc = orig->num_tc;
+	params->mqprio = orig->mqprio;
 
 	/* SQ */
 	if (test_bit(MLX5E_PTP_STATE_TX, c->state)) {
@@ -680,7 +684,7 @@ int mlx5e_ptp_open(struct mlx5e_priv *priv, struct mlx5e_params *params,
 	c->pdev     = mlx5_core_dma_dev(priv->mdev);
 	c->netdev   = priv->netdev;
 	c->mkey_be  = cpu_to_be32(priv->mdev->mlx5e_res.hw_objs.mkey.key);
-	c->num_tc   = params->num_tc;
+	c->num_tc   = mlx5e_get_dcb_num_tc(params);
 	c->stats    = &priv->ptp_stats.ch;
 	c->lag_port = lag_port;
 

drivers/net/ethernet/mellanox/mlx5/core/en/qos.c

@@ -132,7 +132,7 @@ static u16 mlx5e_qid_from_qos(struct mlx5e_channels *chs, u16 qid)
 	 */
 	bool is_ptp = MLX5E_GET_PFLAG(&chs->params, MLX5E_PFLAG_TX_PORT_TS);
 
-	return (chs->params.num_channels + is_ptp) * chs->params.num_tc + qid;
+	return (chs->params.num_channels + is_ptp) * mlx5e_get_dcb_num_tc(&chs->params) + qid;
 }
 
 int mlx5e_get_txq_by_classid(struct mlx5e_priv *priv, u16 classid)