Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2023-02-14 (ice)

This series contains updates to ice driver only.

Karol extends support for GPIO pins to E823 devices.

Daniel Vacek stops processing of PTP packets when link is down.

Pawel adds support for BIG TCP for IPv6.

Tony changes return type of ice_vsi_realloc_stat_arrays() as it always
returns success.

Zhu Yanjun updates kdoc stating supported TLVs.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
  ice: Mention CEE DCBX in code comment
  ice: Change ice_vsi_realloc_stat_arrays() to void
  ice: add support BIG TCP on IPv6
  ice/ptp: fix the PTP worker retrying indefinitely if the link went down
  ice: Add GPIO pin support for E823 products
====================

Link: https://lore.kernel.org/r/20230214213003.2117125-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

8 files changed, 109 insertions, 11 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 7bd50e49312c..b0e29e342401 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -123,6 +123,8 @@
 
 #define ICE_MAX_MTU	(ICE_AQ_SET_MAC_FRAME_SIZE_MAX - ICE_ETH_PKT_HDR_PAD)
 
+#define ICE_MAX_TSO_SIZE 131072
+
 #define ICE_UP_TABLE_TRANSLATE(val, i) \
 		(((val) << ICE_AQ_VSI_UP_TABLE_UP##i##_S) & \
 		  ICE_AQ_VSI_UP_TABLE_UP##i##_M)
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 1b79bb0a4fcd..c2fda4fa4188 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -208,6 +208,31 @@ bool ice_is_e810t(struct ice_hw *hw)
 }
 
 /**
+ * ice_is_e823
+ * @hw: pointer to the hardware structure
+ *
+ * returns true if the device is E823-L or E823-C based, false if not.
+ */
+bool ice_is_e823(struct ice_hw *hw)
+{
+	switch (hw->device_id) {
+	case ICE_DEV_ID_E823L_BACKPLANE:
+	case ICE_DEV_ID_E823L_SFP:
+	case ICE_DEV_ID_E823L_10G_BASE_T:
+	case ICE_DEV_ID_E823L_1GBE:
+	case ICE_DEV_ID_E823L_QSFP:
+	case ICE_DEV_ID_E823C_BACKPLANE:
+	case ICE_DEV_ID_E823C_QSFP:
+	case ICE_DEV_ID_E823C_SFP:
+	case ICE_DEV_ID_E823C_10G_BASE_T:
+	case ICE_DEV_ID_E823C_SGMII:
+		return true;
+	default:
+		return false;
+	}
+}
+
+/**
  * ice_clear_pf_cfg - Clear PF configuration
  * @hw: pointer to the hardware structure
  *
diff --git a/drivers/net/ethernet/intel/ice/ice_common.h b/drivers/net/ethernet/intel/ice/ice_common.h
index 98aa8d124730..8ba5f935a092 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.h
+++ b/drivers/net/ethernet/intel/ice/ice_common.h
@@ -199,6 +199,7 @@ void
 ice_stat_update32(struct ice_hw *hw, u32 reg, bool prev_stat_loaded,
 		  u64 *prev_stat, u64 *cur_stat);
 bool ice_is_e810t(struct ice_hw *hw);
+bool ice_is_e823(struct ice_hw *hw);
 int
 ice_sched_query_elem(struct ice_hw *hw, u32 node_teid,
 		     struct ice_aqc_txsched_elem_data *buf);
diff --git a/drivers/net/ethernet/intel/ice/ice_dcb.c b/drivers/net/ethernet/intel/ice/ice_dcb.c
index 776c1ff6e265..c557dfc50aad 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb.c
@@ -569,7 +569,7 @@ ice_parse_cee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
  * @tlv: Organization specific TLV
  * @dcbcfg: Local store to update ETS REC data
  *
- * Currently only IEEE 802.1Qaz TLV is supported, all others
+ * Currently IEEE 802.1Qaz and CEE DCBX TLV are supported, others
  * will be returned
  */
 static void
@@ -588,7 +588,7 @@ ice_parse_org_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
 		ice_parse_cee_tlv(tlv, dcbcfg);
 		break;
 	default:
-		break;
+		break; /* Other OUIs not supported */
 	}
 }
 
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index 37fe639712e6..8cfc30fc9840 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -3426,7 +3426,7 @@ ice_vsi_rebuild_set_coalesce(struct ice_vsi *vsi,
  * @prev_txq: Number of Tx rings before ring reallocation
  * @prev_rxq: Number of Rx rings before ring reallocation
  */
-static int
+static void
 ice_vsi_realloc_stat_arrays(struct ice_vsi *vsi, int prev_txq, int prev_rxq)
 {
 	struct ice_vsi_stats *vsi_stat;
@@ -3434,9 +3434,9 @@ ice_vsi_realloc_stat_arrays(struct ice_vsi *vsi, int prev_txq, int prev_rxq)
 	int i;
 
 	if (!prev_txq || !prev_rxq)
-		return 0;
+		return;
 	if (vsi->type == ICE_VSI_CHNL)
-		return 0;
+		return;
 
 	vsi_stat = pf->vsi_stats[vsi->idx];
 
@@ -3457,8 +3457,6 @@ ice_vsi_realloc_stat_arrays(struct ice_vsi *vsi, int prev_txq, int prev_rxq)
 			}
 		}
 	}
-
-	return 0;
 }
 
 /**
@@ -3515,8 +3513,7 @@ int ice_vsi_rebuild(struct ice_vsi *vsi, u32 vsi_flags)
 		}
 	}
 
-	if (ice_vsi_realloc_stat_arrays(vsi, prev_txq, prev_rxq))
-		goto err_vsi_cfg_tc_lan;
+	ice_vsi_realloc_stat_arrays(vsi, prev_txq, prev_rxq);
 
 	ice_vsi_rebuild_set_coalesce(vsi, coalesce, prev_num_q_vectors);
 	kfree(coalesce);
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 4994a0e5a668..71e7fa0a0bde 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -3444,6 +3444,8 @@ static void ice_set_netdev_features(struct net_device *netdev)
 	 * be changed at runtime
 	 */
 	netdev->hw_features |= NETIF_F_RXFCS;
+
+	netif_set_tso_max_size(netdev, ICE_MAX_TSO_SIZE);
 }
 
 /**
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c
index 3abc8db1d065..ac6f06f9a2ed 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c
@@ -680,6 +680,7 @@ static bool ice_ptp_tx_tstamp(struct ice_ptp_tx *tx)
 	struct ice_pf *pf;
 	struct ice_hw *hw;
 	u64 tstamp_ready;
+	bool link_up;
 	int err;
 	u8 idx;
 
@@ -695,11 +696,14 @@ static bool ice_ptp_tx_tstamp(struct ice_ptp_tx *tx)
 	if (err)
 		return false;
 
+	/* Drop packets if the link went down */
+	link_up = ptp_port->link_up;
+
 	for_each_set_bit(idx, tx->in_use, tx->len) {
 		struct skb_shared_hwtstamps shhwtstamps = {};
 		u8 phy_idx = idx + tx->offset;
 		u64 raw_tstamp = 0, tstamp;
-		bool drop_ts = false;
+		bool drop_ts = !link_up;
 		struct sk_buff *skb;
 
 		/* Drop packets which have waited for more than 2 seconds */
@@ -728,7 +732,7 @@ static bool ice_ptp_tx_tstamp(struct ice_ptp_tx *tx)
 		ice_trace(tx_tstamp_fw_req, tx->tstamps[idx].skb, idx);
 
 		err = ice_read_phy_tstamp(hw, tx->block, phy_idx, &raw_tstamp);
-		if (err)
+		if (err && !drop_ts)
 			continue;
 
 		ice_trace(tx_tstamp_fw_done, tx->tstamps[idx].skb, idx);
@@ -1770,6 +1774,38 @@ ice_ptp_gpio_enable_e810(struct ptp_clock_info *info,
 }
 
 /**
+ * ice_ptp_gpio_enable_e823 - Enable/disable ancillary features of PHC
+ * @info: the driver's PTP info structure
+ * @rq: The requested feature to change
+ * @on: Enable/disable flag
+ */
+static int ice_ptp_gpio_enable_e823(struct ptp_clock_info *info,
+				    struct ptp_clock_request *rq, int on)
+{
+	struct ice_pf *pf = ptp_info_to_pf(info);
+	struct ice_perout_channel clk_cfg = {0};
+	int err;
+
+	switch (rq->type) {
+	case PTP_CLK_REQ_PPS:
+		clk_cfg.gpio_pin = PPS_PIN_INDEX;
+		clk_cfg.period = NSEC_PER_SEC;
+		clk_cfg.ena = !!on;
+
+		err = ice_ptp_cfg_clkout(pf, PPS_CLK_GEN_CHAN, &clk_cfg, true);
+		break;
+	case PTP_CLK_REQ_EXTTS:
+		err = ice_ptp_cfg_extts(pf, !!on, rq->extts.index,
+					TIME_SYNC_PIN_INDEX, rq->extts.flags);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return err;
+}
+
+/**
  * ice_ptp_gettimex64 - Get the time of the clock
  * @info: the driver's PTP info structure
  * @ts: timespec64 structure to hold the current time value
@@ -2221,6 +2257,19 @@ ice_ptp_setup_pins_e810(struct ice_pf *pf, struct ptp_clock_info *info)
 }
 
 /**
+ * ice_ptp_setup_pins_e823 - Setup PTP pins in sysfs
+ * @pf: pointer to the PF instance
+ * @info: PTP clock capabilities
+ */
+static void
+ice_ptp_setup_pins_e823(struct ice_pf *pf, struct ptp_clock_info *info)
+{
+	info->pps = 1;
+	info->n_per_out = 0;
+	info->n_ext_ts = 1;
+}
+
+/**
  * ice_ptp_set_funcs_e822 - Set specialized functions for E822 support
  * @pf: Board private structure
  * @info: PTP info to fill
@@ -2258,6 +2307,23 @@ ice_ptp_set_funcs_e810(struct ice_pf *pf, struct ptp_clock_info *info)
 }
 
 /**
+ * ice_ptp_set_funcs_e823 - Set specialized functions for E823 support
+ * @pf: Board private structure
+ * @info: PTP info to fill
+ *
+ * Assign functions to the PTP capabiltiies structure for E823 devices.
+ * Functions which operate across all device families should be set directly
+ * in ice_ptp_set_caps. Only add functions here which are distinct for e823
+ * devices.
+ */
+static void
+ice_ptp_set_funcs_e823(struct ice_pf *pf, struct ptp_clock_info *info)
+{
+	info->enable = ice_ptp_gpio_enable_e823;
+	ice_ptp_setup_pins_e823(pf, info);
+}
+
+/**
  * ice_ptp_set_caps - Set PTP capabilities
  * @pf: Board private structure
  */
@@ -2277,6 +2343,8 @@ static void ice_ptp_set_caps(struct ice_pf *pf)
 
 	if (ice_is_e810(&pf->hw))
 		ice_ptp_set_funcs_e810(pf, info);
+	else if (ice_is_e823(&pf->hw))
+		ice_ptp_set_funcs_e823(pf, info);
 	else
 		ice_ptp_set_funcs_e822(pf, info);
 }
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c
index 466113c86e6f..c036be5eb35d 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
@@ -2327,6 +2327,9 @@ ice_xmit_frame_ring(struct sk_buff *skb, struct ice_tx_ring *tx_ring)
 
 	ice_trace(xmit_frame_ring, tx_ring, skb);
 
+	if (unlikely(ipv6_hopopt_jumbo_remove(skb)))
+		goto out_drop;
+
 	count = ice_xmit_desc_count(skb);
 	if (ice_chk_linearize(skb, count)) {
 		if (__skb_linearize(skb))