Merge branch 'octeontx2-updates'

Naveen Mamindlapalli says:

====================
RVU NIX AF driver updates

This patch series includes a few enhancements and other updates to the
RVU NIX AF driver.

The first patch adds devlink option to configure NPC MCAM high priority
zone entries reservation. This is useful when the requester needs more
high priority entries than default reserved entries.

The second patch adds support for RSS hash computation using L3 SRC or
DST only, or L4 SRC or DST only.

The third patch updates DWRR MTU configuration for CN10KB silicon. HW uses
the DWRR MTU to compute DWRR weight.

Patch 4 configures the LBK link in TL3_TL2 configuration only when switch
mode is enabled.

Patch 5 adds an option in the mailbox request to enable/disable DROP_RE bit
which drops packets with L2 errors when set.

Patch 6 updates SMQ flush mechanism to stop other child nodes from
enqueuing any packets while SMQ flush is active. Otherwise SMQ flush may
timeout.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/octeontx2/af/common.h

@@ -145,6 +145,13 @@ enum nix_scheduler {
 #define TXSCH_TL1_DFLT_RR_PRIO		(0x7ull)
 #define CN10K_MAX_DWRR_WEIGHT          16384 /* Weight is 14bit on CN10K */
 
+/* Don't change the order as on CN10K (except CN10KB)
+ * SMQX_CFG[SDP] value should be 1 for SDP flows.
+ */
+#define SMQ_LINK_TYPE_RPM		0
+#define SMQ_LINK_TYPE_SDP		1
+#define SMQ_LINK_TYPE_LBK		2
+
 /* Min/Max packet sizes, excluding FCS */
 #define	NIC_HW_MIN_FRS			40
 #define	NIC_HW_MAX_FRS			9212

drivers/net/ethernet/marvell/octeontx2/af/mbox.h

@@ -1080,6 +1080,8 @@ struct nix_vtag_config_rsp {
 	 */
 };
 
+#define NIX_FLOW_KEY_TYPE_L3_L4_MASK (~(0xf << 28))
+
 struct nix_rss_flowkey_cfg {
 	struct mbox_msghdr hdr;
 	int	mcam_index;  /* MCAM entry index to modify */
@@ -1105,6 +1107,10 @@ struct nix_rss_flowkey_cfg {
 #define NIX_FLOW_KEY_TYPE_IPV4_PROTO	BIT(21)
 #define NIX_FLOW_KEY_TYPE_AH		BIT(22)
 #define NIX_FLOW_KEY_TYPE_ESP		BIT(23)
+#define NIX_FLOW_KEY_TYPE_L4_DST_ONLY BIT(28)
+#define NIX_FLOW_KEY_TYPE_L4_SRC_ONLY BIT(29)
+#define NIX_FLOW_KEY_TYPE_L3_DST_ONLY BIT(30)
+#define NIX_FLOW_KEY_TYPE_L3_SRC_ONLY BIT(31)
 	u32	flowkey_cfg; /* Flowkey types selected */
 	u8	group;       /* RSS context or group */
 };
@@ -1151,6 +1157,7 @@ struct nix_rx_cfg {
 	struct mbox_msghdr hdr;
 #define NIX_RX_OL3_VERIFY   BIT(0)
 #define NIX_RX_OL4_VERIFY   BIT(1)
+#define NIX_RX_DROP_RE      BIT(2)
 	u8 len_verify; /* Outer L3/L4 len check */
 #define NIX_RX_CSUM_OL4_VERIFY  BIT(0)
 	u8 csum_verify; /* Outer L4 checksum verification */
@@ -1239,7 +1246,9 @@ struct nix_hw_info {
 	u16 min_mtu;
 	u32 rpm_dwrr_mtu;
 	u32 sdp_dwrr_mtu;
-	u64 rsvd[16]; /* Add reserved fields for future expansion */
+	u32 lbk_dwrr_mtu;
+	u32 rsvd32[1];
+	u64 rsvd[15]; /* Add reserved fields for future expansion */
 };
 
 struct nix_bandprof_alloc_req {

drivers/net/ethernet/marvell/octeontx2/af/rvu.h

@@ -285,6 +285,22 @@ struct nix_mark_format {
 	u32 *cfg;
 };
 
+/* smq(flush) to tl1 cir/pir info */
+struct nix_smq_tree_ctx {
+	u64 cir_off;
+	u64 cir_val;
+	u64 pir_off;
+	u64 pir_val;
+};
+
+/* smq flush context */
+struct nix_smq_flush_ctx {
+	int smq;
+	u16 tl1_schq;
+	u16 tl2_schq;
+	struct nix_smq_tree_ctx smq_tree_ctx[NIX_TXSCH_LVL_CNT];
+};
+
 struct npc_pkind {
 	struct rsrc_bmap rsrc;
 	u32	*pfchan_map;
@@ -346,6 +362,7 @@ struct hw_cap {
 	bool	per_pf_mbox_regs; /* PF mbox specified in per PF registers ? */
 	bool	programmable_chans; /* Channels programmable ? */
 	bool	ipolicer;
+	bool	nix_multiple_dwrr_mtu;   /* Multiple DWRR_MTU to choose from */
 	bool	npc_hash_extract; /* Hash extract enabled ? */
 	bool	npc_exact_match_enabled; /* Exact match supported ? */
 };
@@ -802,8 +819,11 @@ int nix_aq_context_read(struct rvu *rvu, struct nix_hw *nix_hw,
 			struct nix_cn10k_aq_enq_rsp *aq_rsp,
 			u16 pcifunc, u8 ctype, u32 qidx);
 int rvu_get_nix_blkaddr(struct rvu *rvu, u16 pcifunc);
+int nix_get_dwrr_mtu_reg(struct rvu_hwinfo *hw, int smq_link_type);
 u32 convert_dwrr_mtu_to_bytes(u8 dwrr_mtu);
 u32 convert_bytes_to_dwrr_mtu(u32 bytes);
+void rvu_nix_tx_tl2_cfg(struct rvu *rvu, int blkaddr, u16 pcifunc,
+			struct nix_txsch *txsch, bool enable);
 
 /* NPC APIs */
 void rvu_npc_freemem(struct rvu *rvu);

drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c

@@ -1413,7 +1413,8 @@ static int rvu_af_dl_dwrr_mtu_set(struct devlink *devlink, u32 id,
 	u64 dwrr_mtu;
 
 	dwrr_mtu = convert_bytes_to_dwrr_mtu(ctx->val.vu32);
-	rvu_write64(rvu, BLKADDR_NIX0, NIX_AF_DWRR_RPM_MTU, dwrr_mtu);
+	rvu_write64(rvu, BLKADDR_NIX0,
+		    nix_get_dwrr_mtu_reg(rvu->hw, SMQ_LINK_TYPE_RPM), dwrr_mtu);
 
 	return 0;
 }
@@ -1428,7 +1429,8 @@ static int rvu_af_dl_dwrr_mtu_get(struct devlink *devlink, u32 id,
 	if (!rvu->hw->cap.nix_common_dwrr_mtu)
 		return -EOPNOTSUPP;
 
-	dwrr_mtu = rvu_read64(rvu, BLKADDR_NIX0, NIX_AF_DWRR_RPM_MTU);
+	dwrr_mtu = rvu_read64(rvu, BLKADDR_NIX0,
+			      nix_get_dwrr_mtu_reg(rvu->hw, SMQ_LINK_TYPE_RPM));
 	ctx->val.vu32 = convert_dwrr_mtu_to_bytes(dwrr_mtu);
 
 	return 0;
@@ -1438,6 +1440,7 @@ enum rvu_af_dl_param_id {
 	RVU_AF_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
 	RVU_AF_DEVLINK_PARAM_ID_DWRR_MTU,
 	RVU_AF_DEVLINK_PARAM_ID_NPC_EXACT_FEATURE_DISABLE,
+	RVU_AF_DEVLINK_PARAM_ID_NPC_MCAM_ZONE_PERCENT,
 };
 
 static int rvu_af_npc_exact_feature_get(struct devlink *devlink, u32 id,
@@ -1494,6 +1497,67 @@ static int rvu_af_npc_exact_feature_validate(struct devlink *devlink, u32 id,
 	return -EFAULT;
 }
 
+static int rvu_af_dl_npc_mcam_high_zone_percent_get(struct devlink *devlink, u32 id,
+						    struct devlink_param_gset_ctx *ctx)
+{
+	struct rvu_devlink *rvu_dl = devlink_priv(devlink);
+	struct rvu *rvu = rvu_dl->rvu;
+	struct npc_mcam *mcam;
+	u32 percent;
+
+	mcam = &rvu->hw->mcam;
+	percent = (mcam->hprio_count * 100) / mcam->bmap_entries;
+	ctx->val.vu8 = (u8)percent;
+
+	return 0;
+}
+
+static int rvu_af_dl_npc_mcam_high_zone_percent_set(struct devlink *devlink, u32 id,
+						    struct devlink_param_gset_ctx *ctx)
+{
+	struct rvu_devlink *rvu_dl = devlink_priv(devlink);
+	struct rvu *rvu = rvu_dl->rvu;
+	struct npc_mcam *mcam;
+	u32 percent;
+
+	percent = ctx->val.vu8;
+	mcam = &rvu->hw->mcam;
+	mcam->hprio_count = (mcam->bmap_entries * percent) / 100;
+	mcam->hprio_end = mcam->hprio_count;
+	mcam->lprio_count = (mcam->bmap_entries - mcam->hprio_count) / 2;
+	mcam->lprio_start = mcam->bmap_entries - mcam->lprio_count;
+
+	return 0;
+}
+
+static int rvu_af_dl_npc_mcam_high_zone_percent_validate(struct devlink *devlink, u32 id,
+							 union devlink_param_value val,
+							 struct netlink_ext_ack *extack)
+{
+	struct rvu_devlink *rvu_dl = devlink_priv(devlink);
+	struct rvu *rvu = rvu_dl->rvu;
+	struct npc_mcam *mcam;
+
+	/* The percent of high prio zone must range from 12% to 100% of unreserved mcam space */
+	if (val.vu8 < 12 || val.vu8 > 100) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "mcam high zone percent must be between 12% to 100%");
+		return -EINVAL;
+	}
+
+	/* Do not allow user to modify the high priority zone entries while mcam entries
+	 * have already been assigned.
+	 */
+	mcam = &rvu->hw->mcam;
+	if (mcam->bmap_fcnt < mcam->bmap_entries) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "mcam entries have already been assigned, can't resize");
+		return -EPERM;
+	}
+
+	return 0;
+}
+
 static const struct devlink_param rvu_af_dl_params[] = {
 	DEVLINK_PARAM_DRIVER(RVU_AF_DEVLINK_PARAM_ID_DWRR_MTU,
 			     "dwrr_mtu", DEVLINK_PARAM_TYPE_U32,
@@ -1509,6 +1573,12 @@ static const struct devlink_param rvu_af_dl_param_exact_match[] = {
 			     rvu_af_npc_exact_feature_get,
 			     rvu_af_npc_exact_feature_disable,
 			     rvu_af_npc_exact_feature_validate),
+	DEVLINK_PARAM_DRIVER(RVU_AF_DEVLINK_PARAM_ID_NPC_MCAM_ZONE_PERCENT,
+			     "npc_mcam_high_zone_percent", DEVLINK_PARAM_TYPE_U8,
+			     BIT(DEVLINK_PARAM_CMODE_RUNTIME),
+			     rvu_af_dl_npc_mcam_high_zone_percent_get,
+			     rvu_af_dl_npc_mcam_high_zone_percent_set,
+			     rvu_af_dl_npc_mcam_high_zone_percent_validate),
 };
 
 /* Devlink switch mode */

drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.h

@@ -272,7 +272,8 @@
 #define NIX_AF_DEBUG_NPC_RESP_DATAX(a)          (0x680 | (a) << 3)
 #define NIX_AF_SMQX_CFG(a)                      (0x700 | (a) << 16)
 #define NIX_AF_SQM_DBG_CTL_STATUS               (0x750)
-#define NIX_AF_DWRR_SDP_MTU                     (0x790)
+#define NIX_AF_DWRR_SDP_MTU                     (0x790) /* All CN10K except CN10KB */
+#define NIX_AF_DWRR_MTUX(a)			(0x790 | (a) << 16) /* Only for CN10KB */
 #define NIX_AF_DWRR_RPM_MTU                     (0x7A0)
 #define NIX_AF_PSE_CHANNEL_LEVEL                (0x800)
 #define NIX_AF_PSE_SHAPER_CFG                   (0x810)

drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c

@@ -8,6 +8,17 @@
 #include <linux/bitfield.h>
 #include "rvu.h"
 
+static void rvu_switch_enable_lbk_link(struct rvu *rvu, u16 pcifunc, bool enable)
+{
+	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
+	struct nix_hw *nix_hw;
+
+	nix_hw = get_nix_hw(rvu->hw, pfvf->nix_blkaddr);
+	/* Enable LBK links with channel 63 for TX MCAM rule */
+	rvu_nix_tx_tl2_cfg(rvu, pfvf->nix_blkaddr, pcifunc,
+			   &nix_hw->txsch[NIX_TXSCH_LVL_TL2], enable);
+}
+
 static int rvu_switch_install_rx_rule(struct rvu *rvu, u16 pcifunc,
 				      u16 chan_mask)
 {
@@ -52,6 +63,8 @@ static int rvu_switch_install_tx_rule(struct rvu *rvu, u16 pcifunc, u16 entry)
 	if (!test_bit(NIXLF_INITIALIZED, &pfvf->flags))
 		return 0;
 
+	rvu_switch_enable_lbk_link(rvu, pcifunc, true);
+
 	lbkid = pfvf->nix_blkaddr == BLKADDR_NIX0 ? 0 : 1;
 	ether_addr_copy(req.packet.dmac, pfvf->mac_addr);
 	eth_broadcast_addr((u8 *)&req.mask.dmac);
@@ -218,6 +231,9 @@ void rvu_switch_disable(struct rvu *rvu)
 				"Reverting RX rule for PF%d failed(%d)\n",
 				pf, err);
 
+		/* Disable LBK link */
+		rvu_switch_enable_lbk_link(rvu, pcifunc, false);
+
 		rvu_get_pf_numvfs(rvu, pf, &numvfs, NULL);
 		for (vf = 0; vf < numvfs; vf++) {
 			pcifunc = pf << 10 | ((vf + 1) & 0x3FF);
@@ -226,6 +242,8 @@ void rvu_switch_disable(struct rvu *rvu)
 				dev_err(rvu->dev,
 					"Reverting RX rule for PF%dVF%d failed(%d)\n",
 					pf, vf, err);
+
+			rvu_switch_enable_lbk_link(rvu, pcifunc, false);
 		}
 	}
 

drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c

@@ -8,6 +8,7 @@
 #include <linux/interrupt.h>
 #include <linux/pci.h>
 #include <net/tso.h>
+#include <linux/bitfield.h>
 
 #include "otx2_reg.h"
 #include "otx2_common.h"
@@ -642,6 +643,10 @@ int otx2_txschq_config(struct otx2_nic *pfvf, int lvl, int prio, bool txschq_for
 		req->regval[0] = ((u64)pfvf->tx_max_pktlen << 8) | OTX2_MIN_MTU;
 		req->regval[0] |= (0x20ULL << 51) | (0x80ULL << 39) |
 				  (0x2ULL << 36);
+		/* Set link type for DWRR MTU selection on CN10K silicons */
+		if (!is_dev_otx2(pfvf->pdev))
+			req->regval[0] |= FIELD_PREP(GENMASK_ULL(58, 57),
+						(u64)hw->smq_link_type);
 		req->num_regs++;
 		/* MDQ config */
 		parent = schq_list[NIX_TXSCH_LVL_TL4][prio];
@@ -1824,6 +1829,17 @@ void otx2_set_cints_affinity(struct otx2_nic *pfvf)
 	}
 }
 
+static u32 get_dwrr_mtu(struct otx2_nic *pfvf, struct nix_hw_info *hw)
+{
+	if (is_otx2_lbkvf(pfvf->pdev)) {
+		pfvf->hw.smq_link_type = SMQ_LINK_TYPE_LBK;
+		return hw->lbk_dwrr_mtu;
+	}
+
+	pfvf->hw.smq_link_type = SMQ_LINK_TYPE_RPM;
+	return hw->rpm_dwrr_mtu;
+}
+
 u16 otx2_get_max_mtu(struct otx2_nic *pfvf)
 {
 	struct nix_hw_info *rsp;
@@ -1853,7 +1869,7 @@ u16 otx2_get_max_mtu(struct otx2_nic *pfvf)
 		max_mtu = rsp->max_mtu - 8 - OTX2_ETH_HLEN;
 
 		/* Also save DWRR MTU, needed for DWRR weight calculation */
-		pfvf->hw.dwrr_mtu = rsp->rpm_dwrr_mtu;
+		pfvf->hw.dwrr_mtu = get_dwrr_mtu(pfvf, rsp);
 		if (!pfvf->hw.dwrr_mtu)
 			pfvf->hw.dwrr_mtu = 1;
 	}

drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h

@@ -227,6 +227,7 @@ struct otx2_hw {
 	u16			txschq_list[NIX_TXSCH_LVL_CNT][MAX_TXSCHQ_PER_FUNC];
 	u16			matchall_ipolicer;
 	u32			dwrr_mtu;
+	u8			smq_link_type;
 
 	/* HW settings, coalescing etc */
 	u16			rx_chan_base;