From 38055789d15155109b41602ad719d770af507030 Mon Sep 17 00:00:00 2001 From: Baochen Qiang Date: Thu, 1 Aug 2024 18:04:07 +0300 Subject: wifi: ath12k: use 128 bytes aligned iova in transmit path for WCN7850 In transmit path, it is likely that the iova is not aligned to PCIe TLP max payload size, which is 128 for WCN7850. Normally in such cases hardware is expected to split the packet into several parts in a manner such that they, other than the first one, have aligned iova. However due to hardware limitations, WCN7850 does not behave like that properly with some specific unaligned iova in transmit path. This easily results in target hang in a KPI transmit test: packet send/receive failure, WMI command send timeout etc. Also fatal error seen in PCIe level: ... Capabilities: ... ... DevSta: ... FatalErr+ ... ... ... Work around this by manually moving/reallocating payload buffer such that we can map it to a 128 bytes aligned iova. The moving requires sufficient head room or tail room in skb: for the former we can do ourselves a favor by asking some extra bytes when registering with mac80211, while for the latter we can do nothing. Moving/reallocating buffer consumes additional CPU cycles, but the good news is that an aligned iova increases PCIe efficiency. In my tests on some X86 platforms the KPI results are almost consistent. Since this is seen only with WCN7850, add a new hardware parameter to differentiate from others. Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3 Signed-off-by: Baochen Qiang Cc: Tested-by: Mark Pearson Signed-off-by: Kalle Valo Link: https://patch.msgid.link/20240715023814.20242-1-quic_bqiang@quicinc.com --- drivers/net/wireless/ath/ath12k/dp_tx.c | 72 +++++++++++++++++++++++++++++++++ drivers/net/wireless/ath/ath12k/hw.c | 6 +++ drivers/net/wireless/ath/ath12k/hw.h | 4 ++ drivers/net/wireless/ath/ath12k/mac.c | 1 + 4 files changed, 83 insertions(+) (limited to 'drivers') diff --git a/drivers/net/wireless/ath/ath12k/dp_tx.c b/drivers/net/wireless/ath/ath12k/dp_tx.c index d08c04343e90..44406e0b4a34 100644 --- a/drivers/net/wireless/ath/ath12k/dp_tx.c +++ b/drivers/net/wireless/ath/ath12k/dp_tx.c @@ -162,6 +162,60 @@ static int ath12k_dp_prepare_htt_metadata(struct sk_buff *skb) return 0; } +static void ath12k_dp_tx_move_payload(struct sk_buff *skb, + unsigned long delta, + bool head) +{ + unsigned long len = skb->len; + + if (head) { + skb_push(skb, delta); + memmove(skb->data, skb->data + delta, len); + skb_trim(skb, len); + } else { + skb_put(skb, delta); + memmove(skb->data + delta, skb->data, len); + skb_pull(skb, delta); + } +} + +static int ath12k_dp_tx_align_payload(struct ath12k_base *ab, + struct sk_buff **pskb) +{ + u32 iova_mask = ab->hw_params->iova_mask; + unsigned long offset, delta1, delta2; + struct sk_buff *skb2, *skb = *pskb; + unsigned int headroom = skb_headroom(skb); + int tailroom = skb_tailroom(skb); + int ret = 0; + + offset = (unsigned long)skb->data & iova_mask; + delta1 = offset; + delta2 = iova_mask - offset + 1; + + if (headroom >= delta1) { + ath12k_dp_tx_move_payload(skb, delta1, true); + } else if (tailroom >= delta2) { + ath12k_dp_tx_move_payload(skb, delta2, false); + } else { + skb2 = skb_realloc_headroom(skb, iova_mask); + if (!skb2) { + ret = -ENOMEM; + goto out; + } + + dev_kfree_skb_any(skb); + + offset = (unsigned long)skb2->data & iova_mask; + if (offset) + ath12k_dp_tx_move_payload(skb2, offset, true); + *pskb = skb2; + } + +out: + return ret; +} + int ath12k_dp_tx(struct ath12k *ar, struct ath12k_vif *arvif, struct sk_buff *skb) { @@ -184,6 +238,7 @@ int ath12k_dp_tx(struct ath12k *ar, struct ath12k_vif *arvif, bool tcl_ring_retry; bool msdu_ext_desc = false; bool add_htt_metadata = false; + u32 iova_mask = ab->hw_params->iova_mask; if (test_bit(ATH12K_FLAG_CRASH_FLUSH, &ar->ab->dev_flags)) return -ESHUTDOWN; @@ -279,6 +334,23 @@ tcl_ring_sel: goto fail_remove_tx_buf; } + if (iova_mask && + (unsigned long)skb->data & iova_mask) { + ret = ath12k_dp_tx_align_payload(ab, &skb); + if (ret) { + ath12k_warn(ab, "failed to align TX buffer %d\n", ret); + /* don't bail out, give original buffer + * a chance even unaligned. + */ + goto map; + } + + /* hdr is pointing to a wrong place after alignment, + * so refresh it for later use. + */ + hdr = (void *)skb->data; + } +map: ti.paddr = dma_map_single(ab->dev, skb->data, skb->len, DMA_TO_DEVICE); if (dma_mapping_error(ab->dev, ti.paddr)) { atomic_inc(&ab->soc_stats.tx_err.misc_fail); diff --git a/drivers/net/wireless/ath/ath12k/hw.c b/drivers/net/wireless/ath/ath12k/hw.c index 2e11ea763574..7b0b6a7f4701 100644 --- a/drivers/net/wireless/ath/ath12k/hw.c +++ b/drivers/net/wireless/ath/ath12k/hw.c @@ -924,6 +924,8 @@ static const struct ath12k_hw_params ath12k_hw_params[] = { .acpi_guid = NULL, .supports_dynamic_smps_6ghz = true, + + .iova_mask = 0, }, { .name = "wcn7850 hw2.0", @@ -1000,6 +1002,8 @@ static const struct ath12k_hw_params ath12k_hw_params[] = { .acpi_guid = &wcn7850_uuid, .supports_dynamic_smps_6ghz = false, + + .iova_mask = ATH12K_PCIE_MAX_PAYLOAD_SIZE - 1, }, { .name = "qcn9274 hw2.0", @@ -1072,6 +1076,8 @@ static const struct ath12k_hw_params ath12k_hw_params[] = { .acpi_guid = NULL, .supports_dynamic_smps_6ghz = true, + + .iova_mask = 0, }, }; diff --git a/drivers/net/wireless/ath/ath12k/hw.h b/drivers/net/wireless/ath/ath12k/hw.h index e792eb6b249b..b1d302c48326 100644 --- a/drivers/net/wireless/ath/ath12k/hw.h +++ b/drivers/net/wireless/ath/ath12k/hw.h @@ -96,6 +96,8 @@ #define ATH12K_M3_FILE "m3.bin" #define ATH12K_REGDB_FILE_NAME "regdb.bin" +#define ATH12K_PCIE_MAX_PAYLOAD_SIZE 128 + enum ath12k_hw_rate_cck { ATH12K_HW_RATE_CCK_LP_11M = 0, ATH12K_HW_RATE_CCK_LP_5_5M, @@ -215,6 +217,8 @@ struct ath12k_hw_params { const guid_t *acpi_guid; bool supports_dynamic_smps_6ghz; + + u32 iova_mask; }; struct ath12k_hw_ops { diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c index 8106297f0bc1..ce41c8153080 100644 --- a/drivers/net/wireless/ath/ath12k/mac.c +++ b/drivers/net/wireless/ath/ath12k/mac.c @@ -9193,6 +9193,7 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah) hw->vif_data_size = sizeof(struct ath12k_vif); hw->sta_data_size = sizeof(struct ath12k_sta); + hw->extra_tx_headroom = ab->hw_params->iova_mask; wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_STA_TX_PWR); -- cgit From f1cb9d5aefba07fc52b06b7bd5fdcd9ef91157b4 Mon Sep 17 00:00:00 2001 From: Bitterblue Smith Date: Tue, 6 Aug 2024 19:20:11 +0300 Subject: wifi: rtlwifi: rtl8192du: Initialise value32 in _rtl92du_init_queue_reserved_page GCC complains: In file included from include/linux/ieee80211.h:21, from include/net/mac80211.h:20, from drivers/net/wireless/realtek/rtlwifi/rtl8192du/../wifi.h:14, from drivers/net/wireless/realtek/rtlwifi/rtl8192du/hw.c:4: In function 'u32p_replace_bits', inlined from '_rtl92du_init_queue_reserved_page.isra' at drivers/net/wireless/realtek/rtlwifi/rtl8192du/hw.c:225:2: >> include/linux/bitfield.h:189:18: warning: 'value32' is used uninitialized [-Wuninitialized] Part of the variable is indeed left uninitialised. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202408062100.DWhN0CYH-lkp@intel.com/ Fixes: e769c67105d3 ("wifi: rtlwifi: Add rtl8192du/hw.{c,h}") Signed-off-by: Bitterblue Smith Acked-by: Ping-Ke Shih Signed-off-by: Kalle Valo Link: https://patch.msgid.link/2a808244-93d0-492c-b304-ae1974df5df9@gmail.com --- drivers/net/wireless/realtek/rtlwifi/rtl8192du/hw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192du/hw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/hw.c index 700c6e2bcad1..ff458fb8514d 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192du/hw.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/hw.c @@ -181,11 +181,11 @@ static void _rtl92du_init_queue_reserved_page(struct ieee80211_hw *hw, struct rtl_hal *rtlhal = rtl_hal(rtlpriv); u32 txqpagenum, txqpageunit; u32 txqremainingpage; + u32 value32 = 0; u32 numhq = 0; u32 numlq = 0; u32 numnq = 0; u32 numpubq; - u32 value32; if (rtlhal->macphymode != SINGLEMAC_SINGLEPHY) { numpubq = NORMAL_PAGE_NUM_PUBQ_92D_DUAL_MAC; -- cgit From e037a26ead187901f83cad9c503ccece5ff6817a Mon Sep 17 00:00:00 2001 From: Faizal Rahim Date: Sat, 6 Jul 2024 11:38:07 -0400 Subject: igc: Fix packet still tx after gate close by reducing i226 MAC retry buffer Testing uncovered that even when the taprio gate is closed, some packets still transmit. According to i225/6 hardware errata [1], traffic might overflow the planned QBV window. This happens because MAC maintains an internal buffer, primarily for supporting half duplex retries. Therefore, even when the gate closes, residual MAC data in the buffer may still transmit. To mitigate this for i226, reduce the MAC's internal buffer from 192 bytes to the recommended 88 bytes by modifying the RETX_CTL register value. This follows guidelines from: [1] Ethernet Controller I225/I22 Spec Update Rev 2.1 Errata Item 9: TSN: Packet Transmission Might Cross Qbv Window [2] I225/6 SW User Manual Rev 1.2.4: Section 8.11.5 Retry Buffer Control Note that the RETX_CTL register can't be used in TSN mode because half duplex feature cannot coexist with TSN. Test Steps: 1. Send taprio cmd to board A: tc qdisc replace dev enp1s0 parent root handle 100 taprio \ num_tc 4 \ map 3 2 1 0 3 3 3 3 3 3 3 3 3 3 3 3 \ queues 1@0 1@1 1@2 1@3 \ base-time 0 \ sched-entry S 0x07 500000 \ sched-entry S 0x0f 500000 \ flags 0x2 \ txtime-delay 0 Note that for TC3, gate should open for 500us and close for another 500us. 3. Take tcpdump log on Board B. 4. Send udp packets via UDP tai app from Board A to Board B. 5. Analyze tcpdump log via wireshark log on Board B. Ensure that the total time from the first to the last packet received during one cycle for TC3 does not exceed 500us. Fixes: 43546211738e ("igc: Add new device ID's") Signed-off-by: Faizal Rahim Acked-by: Vinicius Costa Gomes Tested-by: Mor Bar-Gabay Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/igc/igc_defines.h | 6 +++++ drivers/net/ethernet/intel/igc/igc_tsn.c | 34 ++++++++++++++++++++++++++++ 2 files changed, 40 insertions(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/intel/igc/igc_defines.h b/drivers/net/ethernet/intel/igc/igc_defines.h index 5f92b3c7c3d4..511384f3ec5c 100644 --- a/drivers/net/ethernet/intel/igc/igc_defines.h +++ b/drivers/net/ethernet/intel/igc/igc_defines.h @@ -404,6 +404,12 @@ #define IGC_DTXMXPKTSZ_TSN 0x19 /* 1600 bytes of max TX DMA packet size */ #define IGC_DTXMXPKTSZ_DEFAULT 0x98 /* 9728-byte Jumbo frames */ +/* Retry Buffer Control */ +#define IGC_RETX_CTL 0x041C +#define IGC_RETX_CTL_WATERMARK_MASK 0xF +#define IGC_RETX_CTL_QBVFULLTH_SHIFT 8 /* QBV Retry Buffer Full Threshold */ +#define IGC_RETX_CTL_QBVFULLEN 0x1000 /* Enable QBV Retry Buffer Full Threshold */ + /* Transmit Scheduling Latency */ /* Latency between transmission scheduling (LaunchTime) and the time * the packet is transmitted to the network in nanosecond. diff --git a/drivers/net/ethernet/intel/igc/igc_tsn.c b/drivers/net/ethernet/intel/igc/igc_tsn.c index 22cefb1eeedf..46d4c3275bbb 100644 --- a/drivers/net/ethernet/intel/igc/igc_tsn.c +++ b/drivers/net/ethernet/intel/igc/igc_tsn.c @@ -78,6 +78,15 @@ void igc_tsn_adjust_txtime_offset(struct igc_adapter *adapter) wr32(IGC_GTXOFFSET, txoffset); } +static void igc_tsn_restore_retx_default(struct igc_adapter *adapter) +{ + struct igc_hw *hw = &adapter->hw; + u32 retxctl; + + retxctl = rd32(IGC_RETX_CTL) & IGC_RETX_CTL_WATERMARK_MASK; + wr32(IGC_RETX_CTL, retxctl); +} + /* Returns the TSN specific registers to their default values after * the adapter is reset. */ @@ -91,6 +100,9 @@ static int igc_tsn_disable_offload(struct igc_adapter *adapter) wr32(IGC_TXPBS, I225_TXPBSIZE_DEFAULT); wr32(IGC_DTXMXPKTSZ, IGC_DTXMXPKTSZ_DEFAULT); + if (igc_is_device_id_i226(hw)) + igc_tsn_restore_retx_default(adapter); + tqavctrl = rd32(IGC_TQAVCTRL); tqavctrl &= ~(IGC_TQAVCTRL_TRANSMIT_MODE_TSN | IGC_TQAVCTRL_ENHANCED_QAV | IGC_TQAVCTRL_FUTSCDDIS); @@ -111,6 +123,25 @@ static int igc_tsn_disable_offload(struct igc_adapter *adapter) return 0; } +/* To partially fix i226 HW errata, reduce MAC internal buffering from 192 Bytes + * to 88 Bytes by setting RETX_CTL register using the recommendation from: + * a) Ethernet Controller I225/I226 Specification Update Rev 2.1 + * Item 9: TSN: Packet Transmission Might Cross the Qbv Window + * b) I225/6 SW User Manual Rev 1.2.4: Section 8.11.5 Retry Buffer Control + */ +static void igc_tsn_set_retx_qbvfullthreshold(struct igc_adapter *adapter) +{ + struct igc_hw *hw = &adapter->hw; + u32 retxctl, watermark; + + retxctl = rd32(IGC_RETX_CTL); + watermark = retxctl & IGC_RETX_CTL_WATERMARK_MASK; + /* Set QBVFULLTH value using watermark and set QBVFULLEN */ + retxctl |= (watermark << IGC_RETX_CTL_QBVFULLTH_SHIFT) | + IGC_RETX_CTL_QBVFULLEN; + wr32(IGC_RETX_CTL, retxctl); +} + static int igc_tsn_enable_offload(struct igc_adapter *adapter) { struct igc_hw *hw = &adapter->hw; @@ -123,6 +154,9 @@ static int igc_tsn_enable_offload(struct igc_adapter *adapter) wr32(IGC_DTXMXPKTSZ, IGC_DTXMXPKTSZ_TSN); wr32(IGC_TXPBS, IGC_TXPBSIZE_TSN); + if (igc_is_device_id_i226(hw)) + igc_tsn_set_retx_qbvfullthreshold(adapter); + for (i = 0; i < adapter->num_tx_queues; i++) { struct igc_ring *ring = adapter->tx_ring[i]; u32 txqctl = 0; -- cgit From f8d6acaee9d35cbff3c3cfad94641666c596f8da Mon Sep 17 00:00:00 2001 From: Faizal Rahim Date: Sun, 7 Jul 2024 08:53:16 -0400 Subject: igc: Fix qbv_config_change_errors logics When user issues these cmds: 1. Either a) or b) a) mqprio with hardware offload disabled b) taprio with txtime-assist feature enabled 2. etf 3. tc qdisc delete 4. taprio with base time in the past At step 4, qbv_config_change_errors wrongly increased by 1. Excerpt from IEEE 802.1Q-2018 8.6.9.3.1: "If AdminBaseTime specifies a time in the past, and the current schedule is running, then: Increment ConfigChangeError counter" qbv_config_change_errors should only increase if base time is in the past and no taprio is active. In user perspective, taprio was not active when first triggered at step 4. However, i225/6 reuses qbv for etf, so qbv is enabled with a dummy schedule at step 2 where it enters igc_tsn_enable_offload() and qbv_count got incremented to 1. At step 4, it enters igc_tsn_enable_offload() again, qbv_count is incremented to 2. Because taprio is running, tc_setup_type is TC_SETUP_QDISC_ETF and qbv_count > 1, qbv_config_change_errors value got incremented. This issue happens due to reliance on qbv_count field where a non-zero value indicates that taprio is running. But qbv_count increases regardless if taprio is triggered by user or by other tsn feature. It does not align with qbv_config_change_errors expectation where it is only concerned with taprio triggered by user. Fixing this by relocating the qbv_config_change_errors logic to igc_save_qbv_schedule(), eliminating reliance on qbv_count and its inaccuracies from i225/6's multiple uses of qbv feature for other TSN features. The new function created: igc_tsn_is_taprio_activated_by_user() uses taprio_offload_enable field to indicate that the current running taprio was triggered by user, instead of triggered by non-qbv feature like etf. Fixes: ae4fe4698300 ("igc: Add qbv_config_change_errors counter") Signed-off-by: Faizal Rahim Reviewed-by: Simon Horman Acked-by: Vinicius Costa Gomes Tested-by: Mor Bar-Gabay Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/igc/igc_main.c | 8 ++++++-- drivers/net/ethernet/intel/igc/igc_tsn.c | 16 ++++++++-------- drivers/net/ethernet/intel/igc/igc_tsn.h | 1 + 3 files changed, 15 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index 8daf938afc36..dfd6c00b4205 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -6315,12 +6315,16 @@ static int igc_save_qbv_schedule(struct igc_adapter *adapter, if (!validate_schedule(adapter, qopt)) return -EINVAL; + igc_ptp_read(adapter, &now); + + if (igc_tsn_is_taprio_activated_by_user(adapter) && + is_base_time_past(qopt->base_time, &now)) + adapter->qbv_config_change_errors++; + adapter->cycle_time = qopt->cycle_time; adapter->base_time = qopt->base_time; adapter->taprio_offload_enable = true; - igc_ptp_read(adapter, &now); - for (n = 0; n < qopt->num_entries; n++) { struct tc_taprio_sched_entry *e = &qopt->entries[n]; diff --git a/drivers/net/ethernet/intel/igc/igc_tsn.c b/drivers/net/ethernet/intel/igc/igc_tsn.c index 46d4c3275bbb..8ed7b965484d 100644 --- a/drivers/net/ethernet/intel/igc/igc_tsn.c +++ b/drivers/net/ethernet/intel/igc/igc_tsn.c @@ -87,6 +87,14 @@ static void igc_tsn_restore_retx_default(struct igc_adapter *adapter) wr32(IGC_RETX_CTL, retxctl); } +bool igc_tsn_is_taprio_activated_by_user(struct igc_adapter *adapter) +{ + struct igc_hw *hw = &adapter->hw; + + return (rd32(IGC_BASET_H) || rd32(IGC_BASET_L)) && + adapter->taprio_offload_enable; +} + /* Returns the TSN specific registers to their default values after * the adapter is reset. */ @@ -296,14 +304,6 @@ skip_cbs: s64 n = div64_s64(ktime_sub_ns(systim, base_time), cycle); base_time = ktime_add_ns(base_time, (n + 1) * cycle); - - /* Increase the counter if scheduling into the past while - * Gate Control List (GCL) is running. - */ - if ((rd32(IGC_BASET_H) || rd32(IGC_BASET_L)) && - (adapter->tc_setup_type == TC_SETUP_QDISC_TAPRIO) && - (adapter->qbv_count > 1)) - adapter->qbv_config_change_errors++; } else { if (igc_is_device_id_i226(hw)) { ktime_t adjust_time, expires_time; diff --git a/drivers/net/ethernet/intel/igc/igc_tsn.h b/drivers/net/ethernet/intel/igc/igc_tsn.h index b53e6af560b7..98ec845a86bf 100644 --- a/drivers/net/ethernet/intel/igc/igc_tsn.h +++ b/drivers/net/ethernet/intel/igc/igc_tsn.h @@ -7,5 +7,6 @@ int igc_tsn_offload_apply(struct igc_adapter *adapter); int igc_tsn_reset(struct igc_adapter *adapter); void igc_tsn_adjust_txtime_offset(struct igc_adapter *adapter); +bool igc_tsn_is_taprio_activated_by_user(struct igc_adapter *adapter); #endif /* _IGC_BASE_H */ -- cgit From 0afeaeb5dae86aceded0d5f0c3a54d27858c0c6f Mon Sep 17 00:00:00 2001 From: Faizal Rahim Date: Sun, 7 Jul 2024 08:53:17 -0400 Subject: igc: Fix reset adapter logics when tx mode change Following the "igc: Fix TX Hang issue when QBV Gate is close" changes, remaining issues with the reset adapter logic in igc_tsn_offload_apply() have been observed: 1. The reset adapter logics for i225 and i226 differ, although they should be the same according to the guidelines in I225/6 HW Design Section 7.5.2.1 on software initialization during tx mode changes. 2. The i225 resets adapter every time, even though tx mode doesn't change. This occurs solely based on the condition igc_is_device_id_i225() when calling schedule_work(). 3. i226 doesn't reset adapter for tsn->legacy tx mode changes. It only resets adapter for legacy->tsn tx mode transitions. 4. qbv_count introduced in the patch is actually not needed; in this context, a non-zero value of qbv_count is used to indicate if tx mode was unconditionally set to tsn in igc_tsn_enable_offload(). This could be replaced by checking the existing register IGC_TQAVCTRL_TRANSMIT_MODE_TSN bit. This patch resolves all issues and enters schedule_work() to reset the adapter only when changing tx mode. It also removes reliance on qbv_count. qbv_count field will be removed in a future patch. Test ran: 1. Verify reset adapter behaviour in i225/6: a) Enrol a new GCL Reset adapter observed (tx mode change legacy->tsn) b) Enrol a new GCL without deleting qdisc No reset adapter observed (tx mode remain tsn->tsn) c) Delete qdisc Reset adapter observed (tx mode change tsn->legacy) 2. Tested scenario from "igc: Fix TX Hang issue when QBV Gate is closed" to confirm it remains resolved. Fixes: 175c241288c0 ("igc: Fix TX Hang issue when QBV Gate is closed") Signed-off-by: Faizal Rahim Reviewed-by: Simon Horman Acked-by: Vinicius Costa Gomes Tested-by: Mor Bar-Gabay Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/igc/igc_tsn.c | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/intel/igc/igc_tsn.c b/drivers/net/ethernet/intel/igc/igc_tsn.c index 8ed7b965484d..ada751430517 100644 --- a/drivers/net/ethernet/intel/igc/igc_tsn.c +++ b/drivers/net/ethernet/intel/igc/igc_tsn.c @@ -49,6 +49,13 @@ static unsigned int igc_tsn_new_flags(struct igc_adapter *adapter) return new_flags; } +static bool igc_tsn_is_tx_mode_in_tsn(struct igc_adapter *adapter) +{ + struct igc_hw *hw = &adapter->hw; + + return !!(rd32(IGC_TQAVCTRL) & IGC_TQAVCTRL_TRANSMIT_MODE_TSN); +} + void igc_tsn_adjust_txtime_offset(struct igc_adapter *adapter) { struct igc_hw *hw = &adapter->hw; @@ -365,15 +372,22 @@ int igc_tsn_reset(struct igc_adapter *adapter) return err; } -int igc_tsn_offload_apply(struct igc_adapter *adapter) +static bool igc_tsn_will_tx_mode_change(struct igc_adapter *adapter) { - struct igc_hw *hw = &adapter->hw; + bool any_tsn_enabled = !!(igc_tsn_new_flags(adapter) & + IGC_FLAG_TSN_ANY_ENABLED); + + return (any_tsn_enabled && !igc_tsn_is_tx_mode_in_tsn(adapter)) || + (!any_tsn_enabled && igc_tsn_is_tx_mode_in_tsn(adapter)); +} - /* Per I225/6 HW Design Section 7.5.2.1, transmit mode - * cannot be changed dynamically. Require reset the adapter. +int igc_tsn_offload_apply(struct igc_adapter *adapter) +{ + /* Per I225/6 HW Design Section 7.5.2.1 guideline, if tx mode change + * from legacy->tsn or tsn->legacy, then reset adapter is needed. */ if (netif_running(adapter->netdev) && - (igc_is_device_id_i225(hw) || !adapter->qbv_count)) { + igc_tsn_will_tx_mode_change(adapter)) { schedule_work(&adapter->reset_task); return 0; } -- cgit From 6c3fc0b1c3d073bd6fc3bf43dbd0e64240537464 Mon Sep 17 00:00:00 2001 From: Faizal Rahim Date: Sun, 7 Jul 2024 08:53:18 -0400 Subject: igc: Fix qbv tx latency by setting gtxoffset A large tx latency issue was discovered during testing when only QBV was enabled. The issue occurs because gtxoffset was not set when QBV is active, it was only set when launch time is active. The patch "igc: Correct the launchtime offset" only sets gtxoffset when the launchtime_enable field is set by the user. Enabling launchtime_enable ultimately sets the register IGC_TXQCTL_QUEUE_MODE_LAUNCHT (referred to as LaunchT in the SW user manual). Section 7.5.2.6 of the IGC i225/6 SW User Manual Rev 1.2.4 states: "The latency between transmission scheduling (launch time) and the time the packet is transmitted to the network is listed in Table 7-61." However, the patch misinterprets the phrase "launch time" in that section by assuming it specifically refers to the LaunchT register, whereas it actually denotes the generic term for when a packet is released from the internal buffer to the MAC transmit logic. This launch time, as per that section, also implicitly refers to the QBV gate open time, where a packet waits in the buffer for the QBV gate to open. Therefore, latency applies whenever QBV is in use. TSN features such as QBU and QAV reuse QBV, making the latency universal to TSN features. Discussed with i226 HW owner (Shalev, Avi) and we were in agreement that the term "launch time" used in Section 7.5.2.6 is not clear and can be easily misinterpreted. Avi will update this section to: "When TQAVCTRL.TRANSMIT_MODE = TSN, the latency between transmission scheduling and the time the packet is transmitted to the network is listed in Table 7-61." Fix this issue by using igc_tsn_is_tx_mode_in_tsn() as a condition to write to gtxoffset, aligning with the newly updated SW User Manual. Tested: 1. Enrol taprio on talker board base-time 0 cycle-time 1000000 flags 0x2 index 0 cmd S gatemask 0x1 interval1 index 0 cmd S gatemask 0x1 interval2 Note: interval1 = interval for a 64 bytes packet to go through interval2 = cycle-time - interval1 2. Take tcpdump on listener board 3. Use udp tai app on talker to send packets to listener 4. Check the timestamp on listener via wireshark Test Result: 100 Mbps: 113 ~193 ns 1000 Mbps: 52 ~ 84 ns 2500 Mbps: 95 ~ 223 ns Note that the test result is similar to the patch "igc: Correct the launchtime offset". Fixes: 790835fcc0cb ("igc: Correct the launchtime offset") Signed-off-by: Faizal Rahim Reviewed-by: Simon Horman Acked-by: Vinicius Costa Gomes Tested-by: Mor Bar-Gabay Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/igc/igc_tsn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/intel/igc/igc_tsn.c b/drivers/net/ethernet/intel/igc/igc_tsn.c index ada751430517..d68fa7f3d5f0 100644 --- a/drivers/net/ethernet/intel/igc/igc_tsn.c +++ b/drivers/net/ethernet/intel/igc/igc_tsn.c @@ -61,7 +61,7 @@ void igc_tsn_adjust_txtime_offset(struct igc_adapter *adapter) struct igc_hw *hw = &adapter->hw; u16 txoffset; - if (!is_any_launchtime(adapter)) + if (!igc_tsn_is_tx_mode_in_tsn(adapter)) return; switch (adapter->link_speed) { -- cgit From e5876b088ba03a62124266fa20d00e65533c7269 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Tue, 6 Aug 2024 19:28:05 +0200 Subject: usbnet: ipheth: race between ipheth_close and error handling ipheth_sndbulk_callback() can submit carrier_work as a part of its error handling. That means that the driver must make sure that the work is cancelled after it has made sure that no more URB can terminate with an error condition. Hence the order of actions in ipheth_close() needs to be inverted. Signed-off-by: Oliver Neukum Signed-off-by: Foster Snowhill Tested-by: Georgi Valkov Signed-off-by: David S. Miller --- drivers/net/usb/ipheth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/usb/ipheth.c b/drivers/net/usb/ipheth.c index 687d70cfc556..6eeef10edada 100644 --- a/drivers/net/usb/ipheth.c +++ b/drivers/net/usb/ipheth.c @@ -475,8 +475,8 @@ static int ipheth_close(struct net_device *net) { struct ipheth_device *dev = netdev_priv(net); - cancel_delayed_work_sync(&dev->carrier_work); netif_stop_queue(net); + cancel_delayed_work_sync(&dev->carrier_work); return 0; } -- cgit From 655b46d7a39ac6f049698b27c1568c0f7ff85d1e Mon Sep 17 00:00:00 2001 From: Foster Snowhill Date: Tue, 6 Aug 2024 19:28:06 +0200 Subject: usbnet: ipheth: remove extraneous rx URB length check Rx URB length was already checked in ipheth_rcvbulk_callback_legacy() and ipheth_rcvbulk_callback_ncm(), depending on the current mode. The check in ipheth_rcvbulk_callback() was thus mostly a duplicate. The only place in ipheth_rcvbulk_callback() where we care about the URB length is for the initial control frame. These frames are always 4 bytes long. This has been checked as far back as iOS 4.2.1 on iPhone 3G. Remove the extraneous URB length check. For control frames, check for the specific 4-byte length instead. Signed-off-by: Foster Snowhill Tested-by: Georgi Valkov Signed-off-by: David S. Miller --- drivers/net/usb/ipheth.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/net/usb/ipheth.c b/drivers/net/usb/ipheth.c index 6eeef10edada..017255615508 100644 --- a/drivers/net/usb/ipheth.c +++ b/drivers/net/usb/ipheth.c @@ -286,11 +286,6 @@ static void ipheth_rcvbulk_callback(struct urb *urb) return; } - if (urb->actual_length <= IPHETH_IP_ALIGN) { - dev->net->stats.rx_length_errors++; - return; - } - /* RX URBs starting with 0x00 0x01 do not encapsulate Ethernet frames, * but rather are control frames. Their purpose is not documented, and * they don't affect driver functionality, okay to drop them. @@ -298,7 +293,8 @@ static void ipheth_rcvbulk_callback(struct urb *urb) * URB received from the bulk IN endpoint. */ if (unlikely - (((char *)urb->transfer_buffer)[0] == 0 && + (urb->actual_length == 4 && + ((char *)urb->transfer_buffer)[0] == 0 && ((char *)urb->transfer_buffer)[1] == 1)) goto rx_submit; -- cgit From 94d7eeb6c0ef0310992944f0d0296929816a2cb0 Mon Sep 17 00:00:00 2001 From: Foster Snowhill Date: Tue, 6 Aug 2024 19:28:07 +0200 Subject: usbnet: ipheth: drop RX URBs with no payload On iPhone 15 Pro Max one can observe periodic URBs with no payload on the "bulk in" (RX) endpoint. These don't seem to do anything meaningful. Reproduced on iOS 17.5.1 and 17.6. This behaviour isn't observed on iPhone 11 on the same iOS version. The nature of these zero-length URBs is so far unknown. Drop RX URBs with no payload. Signed-off-by: Foster Snowhill Signed-off-by: David S. Miller --- drivers/net/usb/ipheth.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers') diff --git a/drivers/net/usb/ipheth.c b/drivers/net/usb/ipheth.c index 017255615508..f04c7bf79665 100644 --- a/drivers/net/usb/ipheth.c +++ b/drivers/net/usb/ipheth.c @@ -286,6 +286,12 @@ static void ipheth_rcvbulk_callback(struct urb *urb) return; } + /* iPhone may periodically send URBs with no payload + * on the "bulk in" endpoint. It is safe to ignore them. + */ + if (urb->actual_length == 0) + goto rx_submit; + /* RX URBs starting with 0x00 0x01 do not encapsulate Ethernet frames, * but rather are control frames. Their purpose is not documented, and * they don't affect driver functionality, okay to drop them. -- cgit From 74efed51e0a4d62f998f806c307778b47fc73395 Mon Sep 17 00:00:00 2001 From: Foster Snowhill Date: Tue, 6 Aug 2024 19:28:08 +0200 Subject: usbnet: ipheth: do not stop RX on failing RX callback RX callbacks can fail for multiple reasons: * Payload too short * Payload formatted incorrecly (e.g. bad NCM framing) * Lack of memory None of these should cause the driver to seize up. Make such failures non-critical and continue processing further incoming URBs. Signed-off-by: Foster Snowhill Signed-off-by: David S. Miller --- drivers/net/usb/ipheth.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/usb/ipheth.c b/drivers/net/usb/ipheth.c index f04c7bf79665..cdc72559790a 100644 --- a/drivers/net/usb/ipheth.c +++ b/drivers/net/usb/ipheth.c @@ -308,7 +308,6 @@ static void ipheth_rcvbulk_callback(struct urb *urb) if (retval != 0) { dev_err(&dev->intf->dev, "%s: callback retval: %d\n", __func__, retval); - return; } rx_submit: -- cgit From 67927a1b255d883881be9467508e0af9a5e0be9d Mon Sep 17 00:00:00 2001 From: Foster Snowhill Date: Tue, 6 Aug 2024 19:28:09 +0200 Subject: usbnet: ipheth: fix carrier detection in modes 1 and 4 Apart from the standard "configurations", "interfaces" and "alternate interface settings" in USB, iOS devices also have a notion of "modes". In different modes, the device exposes a different set of available configurations. Depending on the iOS version, and depending on the current mode, the length and contents of the carrier state control message differs: * 1 byte (seen on iOS 4.2.1, 8.4): * 03: carrier off (mode 0) * 04: carrier on (mode 0) * 3 bytes (seen on iOS 10.3.4, 15.7.6): * 03 03 03: carrier off (mode 0) * 04 04 03: carrier on (mode 0) * 4 bytes (seen on iOS 16.5, 17.6): * 03 03 03 00: carrier off (mode 0) * 04 03 03 00: carrier off (mode 1) * 06 03 03 00: carrier off (mode 4) * 04 04 03 04: carrier on (mode 0 and 1) * 06 04 03 04: carrier on (mode 4) Before this change, the driver always used the first byte of the response to determine carrier state. From this larger sample, the first byte seems to indicate the number of available USB configurations in the current mode (with the exception of the default mode 0), and in some cases (namely mode 1 and 4) does not correlate with the carrier state. Previous logic erroneously counted `04 03 03 00` as "carrier on" and `06 04 03 04` as "carrier off" on iOS versions that support mode 1 and mode 4 respectively. Only modes 0, 1 and 4 expose the USB Ethernet interfaces necessary for the ipheth driver. Check the second byte of the control message where possible, and fall back to checking the first byte on older iOS versions. Signed-off-by: Foster Snowhill Tested-by: Georgi Valkov Signed-off-by: David S. Miller --- drivers/net/usb/ipheth.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/usb/ipheth.c b/drivers/net/usb/ipheth.c index cdc72559790a..46afb95ffabe 100644 --- a/drivers/net/usb/ipheth.c +++ b/drivers/net/usb/ipheth.c @@ -355,13 +355,14 @@ static int ipheth_carrier_set(struct ipheth_device *dev) 0x02, /* index */ dev->ctrl_buf, IPHETH_CTRL_BUF_SIZE, IPHETH_CTRL_TIMEOUT); - if (retval < 0) { + if (retval <= 0) { dev_err(&dev->intf->dev, "%s: usb_control_msg: %d\n", __func__, retval); return retval; } - if (dev->ctrl_buf[0] == IPHETH_CARRIER_ON) { + if ((retval == 1 && dev->ctrl_buf[0] == IPHETH_CARRIER_ON) || + (retval >= 2 && dev->ctrl_buf[1] == IPHETH_CARRIER_ON)) { netif_carrier_on(dev->net); if (dev->tx_urb->status != -EINPROGRESS) netif_wake_queue(dev->net); -- cgit From 3a3be7ff9224f424e485287b54be00d2c6bd9c40 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 8 Aug 2024 13:24:55 +0000 Subject: gtp: pull network headers in gtp_dev_xmit() syzbot/KMSAN reported use of uninit-value in get_dev_xmit() [1] We must make sure the IPv4 or Ipv6 header is pulled in skb->head before accessing fields in them. Use pskb_inet_may_pull() to fix this issue. [1] BUG: KMSAN: uninit-value in ipv6_pdp_find drivers/net/gtp.c:220 [inline] BUG: KMSAN: uninit-value in gtp_build_skb_ip6 drivers/net/gtp.c:1229 [inline] BUG: KMSAN: uninit-value in gtp_dev_xmit+0x1424/0x2540 drivers/net/gtp.c:1281 ipv6_pdp_find drivers/net/gtp.c:220 [inline] gtp_build_skb_ip6 drivers/net/gtp.c:1229 [inline] gtp_dev_xmit+0x1424/0x2540 drivers/net/gtp.c:1281 __netdev_start_xmit include/linux/netdevice.h:4913 [inline] netdev_start_xmit include/linux/netdevice.h:4922 [inline] xmit_one net/core/dev.c:3580 [inline] dev_hard_start_xmit+0x247/0xa20 net/core/dev.c:3596 __dev_queue_xmit+0x358c/0x5610 net/core/dev.c:4423 dev_queue_xmit include/linux/netdevice.h:3105 [inline] packet_xmit+0x9c/0x6c0 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3145 [inline] packet_sendmsg+0x90e3/0xa3a0 net/packet/af_packet.c:3177 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:745 __sys_sendto+0x685/0x830 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0x125/0x1d0 net/socket.c:2212 x64_sys_call+0x3799/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:45 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:3994 [inline] slab_alloc_node mm/slub.c:4037 [inline] kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4080 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:583 __alloc_skb+0x363/0x7b0 net/core/skbuff.c:674 alloc_skb include/linux/skbuff.h:1320 [inline] alloc_skb_with_frags+0xc8/0xbf0 net/core/skbuff.c:6526 sock_alloc_send_pskb+0xa81/0xbf0 net/core/sock.c:2815 packet_alloc_skb net/packet/af_packet.c:2994 [inline] packet_snd net/packet/af_packet.c:3088 [inline] packet_sendmsg+0x749c/0xa3a0 net/packet/af_packet.c:3177 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:745 __sys_sendto+0x685/0x830 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0x125/0x1d0 net/socket.c:2212 x64_sys_call+0x3799/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:45 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 0 UID: 0 PID: 7115 Comm: syz.1.515 Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Fixes: 999cb275c807 ("gtp: add IPv6 support") Fixes: 459aa660eb1d ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)") Signed-off-by: Eric Dumazet Cc: Harald Welte Reviewed-by: Pablo Neira Ayuso Link: https://patch.msgid.link/20240808132455.3413916-1-edumazet@google.com Signed-off-by: Jakub Kicinski --- drivers/net/gtp.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index 427b91aca50d..0696faf60013 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -1269,6 +1269,9 @@ static netdev_tx_t gtp_dev_xmit(struct sk_buff *skb, struct net_device *dev) if (skb_cow_head(skb, dev->needed_headroom)) goto tx_err; + if (!pskb_inet_may_pull(skb)) + goto tx_err; + skb_reset_inner_headers(skb); /* PDP context lookups in gtp_build_skb_*() need rcu read-side lock. */ -- cgit From c31fe2b5095d8c84562ce90db07600f7e9f318df Mon Sep 17 00:00:00 2001 From: Tariq Toukan Date: Thu, 8 Aug 2024 17:41:02 +0300 Subject: net/mlx5: SD, Do not query MPIR register if no sd_group Unconditionally calling the MPIR query on BF separate mode yields the FW syndrome below [1]. Do not call it unless admin clearly specified the SD group, i.e. expressing the intention of using the multi-PF netdev feature. This fix covers cases not covered in commit fca3b4791850 ("net/mlx5: Do not query MPIR on embedded CPU function"). [1] mlx5_cmd_out_err:808:(pid 8267): ACCESS_REG(0x805) op_mod(0x1) failed, status bad system state(0x4), syndrome (0x685f19), err(-5) Fixes: 678eb448055a ("net/mlx5: SD, Implement basic query and instantiation") Signed-off-by: Tariq Toukan Reviewed-by: Gal Pressman Link: https://patch.msgid.link/20240808144107.2095424-2-tariqt@nvidia.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c index f6deb5a3f820..eeb0b7ea05f1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c @@ -126,7 +126,7 @@ static bool mlx5_sd_is_supported(struct mlx5_core_dev *dev, u8 host_buses) } static int mlx5_query_sd(struct mlx5_core_dev *dev, bool *sdm, - u8 *host_buses, u8 *sd_group) + u8 *host_buses) { u32 out[MLX5_ST_SZ_DW(mpir_reg)]; int err; @@ -135,10 +135,6 @@ static int mlx5_query_sd(struct mlx5_core_dev *dev, bool *sdm, if (err) return err; - err = mlx5_query_nic_vport_sd_group(dev, sd_group); - if (err) - return err; - *sdm = MLX5_GET(mpir_reg, out, sdm); *host_buses = MLX5_GET(mpir_reg, out, host_buses); @@ -166,19 +162,23 @@ static int sd_init(struct mlx5_core_dev *dev) if (mlx5_core_is_ecpf(dev)) return 0; + err = mlx5_query_nic_vport_sd_group(dev, &sd_group); + if (err) + return err; + + if (!sd_group) + return 0; + if (!MLX5_CAP_MCAM_REG(dev, mpir)) return 0; - err = mlx5_query_sd(dev, &sdm, &host_buses, &sd_group); + err = mlx5_query_sd(dev, &sdm, &host_buses); if (err) return err; if (!sdm) return 0; - if (!sd_group) - return 0; - group_id = mlx5_sd_group_id(dev, sd_group); if (!mlx5_sd_is_supported(dev, host_buses)) { -- cgit From ab6013a59b4d0947fda409c29426dc904959e632 Mon Sep 17 00:00:00 2001 From: Dragos Tatulea Date: Thu, 8 Aug 2024 17:41:03 +0300 Subject: net/mlx5e: SHAMPO, Increase timeout to improve latency During latency tests (netperf TCP_RR) a 30% degradation of HW GRO vs SW GRO was observed. This is due to SHAMPO triggering timeout filler CQEs instead of delivering the CQE for the packet. Having a short timeout for SHAMPO doesn't bring any benefits as it is the driver that does the merging, not the hardware. On the contrary, it can have a negative impact: additional filler CQEs are generated due to the timeout. As there is no way to disable this timeout, this change sets it to the maximum value. Instead of using the packet_merge.timeout parameter which is also used for LRO, set the value directly when filling in the rest of the SHAMPO parameters in mlx5e_build_rq_param(). Fixes: 99be56171fa9 ("net/mlx5e: SHAMPO, Re-enable HW-GRO") Signed-off-by: Dragos Tatulea Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/20240808144107.2095424-3-tariqt@nvidia.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mellanox/mlx5/core/en.h | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en/params.c | 16 +++++++++++++++- drivers/net/ethernet/mellanox/mlx5/core/en/params.h | 1 + drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 12 ------------ 4 files changed, 17 insertions(+), 14 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index 5fd82c67b6ab..bb5da42edc23 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -130,7 +130,7 @@ struct page_pool; #define MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW 0x2 #define MLX5E_DEFAULT_LRO_TIMEOUT 32 -#define MLX5E_LRO_TIMEOUT_ARR_SIZE 4 +#define MLX5E_DEFAULT_SHAMPO_TIMEOUT 1024 #define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC 0x10 #define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC_FROM_CQE 0x3 diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/params.c b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c index 6c9ccccca81e..64b62ed17b07 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/params.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c @@ -928,7 +928,7 @@ int mlx5e_build_rq_param(struct mlx5_core_dev *mdev, MLX5_SET(wq, wq, log_headers_entry_size, mlx5e_shampo_get_log_hd_entry_size(mdev, params)); MLX5_SET(rqc, rqc, reservation_timeout, - params->packet_merge.timeout); + mlx5e_choose_lro_timeout(mdev, MLX5E_DEFAULT_SHAMPO_TIMEOUT)); MLX5_SET(rqc, rqc, shampo_match_criteria_type, params->packet_merge.shampo.match_criteria_type); MLX5_SET(rqc, rqc, shampo_no_match_alignment_granularity, @@ -1087,6 +1087,20 @@ static u32 mlx5e_shampo_icosq_sz(struct mlx5_core_dev *mdev, return wqebbs; } +#define MLX5E_LRO_TIMEOUT_ARR_SIZE 4 + +u32 mlx5e_choose_lro_timeout(struct mlx5_core_dev *mdev, u32 wanted_timeout) +{ + int i; + + /* The supported periods are organized in ascending order */ + for (i = 0; i < MLX5E_LRO_TIMEOUT_ARR_SIZE - 1; i++) + if (MLX5_CAP_ETH(mdev, lro_timer_supported_periods[i]) >= wanted_timeout) + break; + + return MLX5_CAP_ETH(mdev, lro_timer_supported_periods[i]); +} + static u32 mlx5e_mpwrq_total_umr_wqebbs(struct mlx5_core_dev *mdev, struct mlx5e_params *params, struct mlx5e_xsk_param *xsk) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/params.h b/drivers/net/ethernet/mellanox/mlx5/core/en/params.h index 749b2ec0436e..3f8986f9d862 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/params.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/params.h @@ -108,6 +108,7 @@ u32 mlx5e_shampo_hd_per_wqe(struct mlx5_core_dev *mdev, u32 mlx5e_shampo_hd_per_wq(struct mlx5_core_dev *mdev, struct mlx5e_params *params, struct mlx5e_rq_param *rq_param); +u32 mlx5e_choose_lro_timeout(struct mlx5_core_dev *mdev, u32 wanted_timeout); u8 mlx5e_mpwqe_get_log_stride_size(struct mlx5_core_dev *mdev, struct mlx5e_params *params, struct mlx5e_xsk_param *xsk); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 6f686fabed44..f04decca39f2 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -5167,18 +5167,6 @@ const struct net_device_ops mlx5e_netdev_ops = { #endif }; -static u32 mlx5e_choose_lro_timeout(struct mlx5_core_dev *mdev, u32 wanted_timeout) -{ - int i; - - /* The supported periods are organized in ascending order */ - for (i = 0; i < MLX5E_LRO_TIMEOUT_ARR_SIZE - 1; i++) - if (MLX5_CAP_ETH(mdev, lro_timer_supported_periods[i]) >= wanted_timeout) - break; - - return MLX5_CAP_ETH(mdev, lro_timer_supported_periods[i]); -} - void mlx5e_build_nic_params(struct mlx5e_priv *priv, struct mlx5e_xsk *xsk, u16 mtu) { struct mlx5e_params *params = &priv->channels.params; -- cgit From e6b5afd30b99b43682a7764e1a74a42fe4d5f4b3 Mon Sep 17 00:00:00 2001 From: Dragos Tatulea Date: Thu, 8 Aug 2024 17:41:04 +0300 Subject: net/mlx5e: Take state lock during tx timeout reporter mlx5e_safe_reopen_channels() requires the state lock taken. The referenced changed in the Fixes tag removed the lock to fix another issue. This patch adds it back but at a later point (when calling mlx5e_safe_reopen_channels()) to avoid the deadlock referenced in the Fixes tag. Fixes: eab0da38912e ("net/mlx5e: Fix possible deadlock on mlx5e_tx_timeout_work") Signed-off-by: Dragos Tatulea Link: https://lore.kernel.org/all/ZplpKq8FKi3vwfxv@gmail.com/T/ Reviewed-by: Breno Leitao Reviewed-by: Moshe Shemesh Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/20240808144107.2095424-4-tariqt@nvidia.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c index 22918b2ef7f1..09433b91be17 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c @@ -146,7 +146,9 @@ static int mlx5e_tx_reporter_timeout_recover(void *ctx) return err; } + mutex_lock(&priv->state_lock); err = mlx5e_safe_reopen_channels(priv); + mutex_unlock(&priv->state_lock); if (!err) { to_ctx->status = 1; /* all channels recovered */ return err; -- cgit From cbc796be1779c4dbc9a482c7233995e2a8b6bfb3 Mon Sep 17 00:00:00 2001 From: Cosmin Ratiu Date: Thu, 8 Aug 2024 17:41:05 +0300 Subject: net/mlx5e: Correctly report errors for ethtool rx flows Previously, an ethtool rx flow with no attrs would not be added to the NIC as it has no rules to configure the hw with, but it would be reported as successful to the caller (return code 0). This is confusing for the user as ethtool then reports "Added rule $num", but no rule was actually added. This change corrects that by instead reporting these wrong rules as -EINVAL. Fixes: b29c61dac3a2 ("net/mlx5e: Ethtool steering flow validation refactoring") Signed-off-by: Cosmin Ratiu Reviewed-by: Saeed Mahameed Reviewed-by: Dragos Tatulea Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/20240808144107.2095424-5-tariqt@nvidia.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mellanox/mlx5/core/en_fs_ethtool.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_fs_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_fs_ethtool.c index 3eccdadc0357..773624bb2c5d 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs_ethtool.c @@ -734,7 +734,7 @@ mlx5e_ethtool_flow_replace(struct mlx5e_priv *priv, if (num_tuples <= 0) { netdev_warn(priv->netdev, "%s: flow is not valid %d\n", __func__, num_tuples); - return num_tuples; + return num_tuples < 0 ? num_tuples : -EINVAL; } eth_ft = get_flow_table(priv, fs, num_tuples); -- cgit From 0b4a4534d083e055831b3bc29c5eafc918ed4d86 Mon Sep 17 00:00:00 2001 From: Gal Pressman Date: Thu, 8 Aug 2024 17:41:06 +0300 Subject: net/mlx5e: Fix queue stats access to non-existing channels splat The queue stats API queries the queues according to the real_num_[tr]x_queues, in case the device is down and channels were not yet created, don't try to query their statistics. To trigger the panic, run this command before the interface is brought up: ./cli.py --spec ../../../Documentation/netlink/specs/netdev.yaml --dump qstats-get --json '{"ifindex": 4}' BUG: kernel NULL pointer dereference, address: 0000000000000c00 PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP PTI CPU: 3 UID: 0 PID: 977 Comm: python3 Not tainted 6.10.0+ #40 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:mlx5e_get_queue_stats_rx+0x3c/0xb0 [mlx5_core] Code: fc 55 48 63 ee 53 48 89 d3 e8 40 3d 70 e1 85 c0 74 58 4c 89 ef e8 d4 07 04 00 84 c0 75 41 49 8b 84 24 f8 39 00 00 48 8b 04 e8 <48> 8b 90 00 0c 00 00 48 03 90 40 0a 00 00 48 89 53 08 48 8b 90 08 RSP: 0018:ffff888116be37d0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888116be3868 RCX: 0000000000000004 RDX: ffff88810ada4000 RSI: 0000000000000000 RDI: ffff888109df09c0 RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000004 R10: ffff88813461901c R11: ffffffffffffffff R12: ffff888109df0000 R13: ffff888109df09c0 R14: ffff888116be38d0 R15: 0000000000000000 FS: 00007f4375d5c740(0000) GS:ffff88852c980000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000c00 CR3: 0000000106ada006 CR4: 0000000000370eb0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ? __die+0x1f/0x60 ? page_fault_oops+0x14e/0x3d0 ? exc_page_fault+0x73/0x130 ? asm_exc_page_fault+0x22/0x30 ? mlx5e_get_queue_stats_rx+0x3c/0xb0 [mlx5_core] netdev_nl_stats_by_netdev+0x2a6/0x4c0 ? __rmqueue_pcplist+0x351/0x6f0 netdev_nl_qstats_get_dumpit+0xc4/0x1b0 genl_dumpit+0x2d/0x80 netlink_dump+0x199/0x410 __netlink_dump_start+0x1aa/0x2c0 genl_family_rcv_msg_dumpit+0x94/0xf0 ? __pfx_genl_start+0x10/0x10 ? __pfx_genl_dumpit+0x10/0x10 ? __pfx_genl_done+0x10/0x10 genl_rcv_msg+0x116/0x2b0 ? __pfx_netdev_nl_qstats_get_dumpit+0x10/0x10 ? __pfx_genl_rcv_msg+0x10/0x10 netlink_rcv_skb+0x54/0x100 genl_rcv+0x24/0x40 netlink_unicast+0x21a/0x340 netlink_sendmsg+0x1f4/0x440 __sys_sendto+0x1b6/0x1c0 ? do_sock_setsockopt+0xc3/0x180 ? __sys_setsockopt+0x60/0xb0 __x64_sys_sendto+0x20/0x30 do_syscall_64+0x50/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f43757132b0 Code: c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20 RSP: 002b:00007ffd258da048 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007ffd258da0f8 RCX: 00007f43757132b0 RDX: 000000000000001c RSI: 00007f437464b850 RDI: 0000000000000003 RBP: 00007f4375085de0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: ffffffffc4653600 R14: 0000000000000001 R15: 00007f43751a6147 Modules linked in: netconsole xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat br_netfilter rpcsec_gss_krb5 auth_rpcgss oid_registry overlay rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_iscsi ib_umad rdma_cm ib_ipoib iw_cm ib_cm mlx5_ib ib_uverbs ib_core zram zsmalloc mlx5_core fuse [last unloaded: netconsole] CR2: 0000000000000c00 ---[ end trace 0000000000000000 ]--- RIP: 0010:mlx5e_get_queue_stats_rx+0x3c/0xb0 [mlx5_core] Code: fc 55 48 63 ee 53 48 89 d3 e8 40 3d 70 e1 85 c0 74 58 4c 89 ef e8 d4 07 04 00 84 c0 75 41 49 8b 84 24 f8 39 00 00 48 8b 04 e8 <48> 8b 90 00 0c 00 00 48 03 90 40 0a 00 00 48 89 53 08 48 8b 90 08 RSP: 0018:ffff888116be37d0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888116be3868 RCX: 0000000000000004 RDX: ffff88810ada4000 RSI: 0000000000000000 RDI: ffff888109df09c0 RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000004 R10: ffff88813461901c R11: ffffffffffffffff R12: ffff888109df0000 R13: ffff888109df09c0 R14: ffff888116be38d0 R15: 0000000000000000 FS: 00007f4375d5c740(0000) GS:ffff88852c980000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000c00 CR3: 0000000106ada006 CR4: 0000000000370eb0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Fixes: 7b66ae536a78 ("net/mlx5e: Add per queue netdev-genl stats") Signed-off-by: Gal Pressman Signed-off-by: Tariq Toukan Reviewed-by: Joe Damato Link: https://patch.msgid.link/20240808144107.2095424-6-tariqt@nvidia.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index f04decca39f2..5df904639b0c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -5296,7 +5296,7 @@ static void mlx5e_get_queue_stats_rx(struct net_device *dev, int i, struct mlx5e_rq_stats *rq_stats; ASSERT_RTNL(); - if (mlx5e_is_uplink_rep(priv)) + if (mlx5e_is_uplink_rep(priv) || !priv->stats_nch) return; channel_stats = priv->channel_stats[i]; @@ -5316,6 +5316,9 @@ static void mlx5e_get_queue_stats_tx(struct net_device *dev, int i, struct mlx5e_sq_stats *sq_stats; ASSERT_RTNL(); + if (!priv->stats_nch) + return; + /* no special case needed for ptp htb etc since txq2sq_stats is kept up * to date for active sq_stats, otherwise get_base_stats takes care of * inactive sqs. -- cgit From 2ad4e1ada8eebafa2d75a4b75eeeca882de6ada1 Mon Sep 17 00:00:00 2001 From: Janne Grunau Date: Sat, 3 Aug 2024 21:52:55 +0200 Subject: wifi: brcmfmac: cfg80211: Handle SSID based pmksa deletion wpa_supplicant 2.11 sends since 1efdba5fdc2c ("Handle PMKSA flush in the driver for SAE/OWE offload cases") SSID based PMKSA del commands. brcmfmac is not prepared and tries to dereference the NULL bssid and pmkid pointers in cfg80211_pmksa. PMKID_V3 operations support SSID based updates so copy the SSID. Fixes: a96202acaea4 ("wifi: brcmfmac: cfg80211: Add support for PMKID_V3 operations") Cc: stable@vger.kernel.org # 6.4.x Signed-off-by: Janne Grunau Reviewed-by: Neal Gompa Acked-by: Arend van Spriel Signed-off-by: Kalle Valo Link: https://patch.msgid.link/20240803-brcmfmac_pmksa_del_ssid-v1-1-4e85f19135e1@jannau.net --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c index 1585a5653ee4..d4cc5fa92341 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c @@ -4320,9 +4320,16 @@ brcmf_pmksa_v3_op(struct brcmf_if *ifp, struct cfg80211_pmksa *pmksa, /* Single PMK operation */ pmk_op->count = cpu_to_le16(1); length += sizeof(struct brcmf_pmksa_v3); - memcpy(pmk_op->pmk[0].bssid, pmksa->bssid, ETH_ALEN); - memcpy(pmk_op->pmk[0].pmkid, pmksa->pmkid, WLAN_PMKID_LEN); - pmk_op->pmk[0].pmkid_len = WLAN_PMKID_LEN; + if (pmksa->bssid) + memcpy(pmk_op->pmk[0].bssid, pmksa->bssid, ETH_ALEN); + if (pmksa->pmkid) { + memcpy(pmk_op->pmk[0].pmkid, pmksa->pmkid, WLAN_PMKID_LEN); + pmk_op->pmk[0].pmkid_len = WLAN_PMKID_LEN; + } + if (pmksa->ssid && pmksa->ssid_len) { + memcpy(pmk_op->pmk[0].ssid.SSID, pmksa->ssid, pmksa->ssid_len); + pmk_op->pmk[0].ssid.SSID_len = pmksa->ssid_len; + } pmk_op->pmk[0].time_left = cpu_to_le32(alive ? BRCMF_PMKSA_NO_EXPIRY : 0); } -- cgit From 9a039eeb71a42c8b13408a1976e300f3898e1be0 Mon Sep 17 00:00:00 2001 From: Moon Yeounsu Date: Wed, 7 Aug 2024 19:07:21 +0900 Subject: net: ethernet: use ip_hdrlen() instead of bit shift `ip_hdr(skb)->ihl << 2` is the same as `ip_hdrlen(skb)` Therefore, we should use a well-defined function not a bit shift to find the header length. It also compresses two lines to a single line. Signed-off-by: Moon Yeounsu Reviewed-by: Christophe JAILLET Signed-off-by: David S. Miller --- drivers/net/ethernet/jme.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/jme.c b/drivers/net/ethernet/jme.c index b06e24562973..d8be0e4dcb07 100644 --- a/drivers/net/ethernet/jme.c +++ b/drivers/net/ethernet/jme.c @@ -946,15 +946,13 @@ jme_udpsum(struct sk_buff *skb) if (skb->protocol != htons(ETH_P_IP)) return csum; skb_set_network_header(skb, ETH_HLEN); - if ((ip_hdr(skb)->protocol != IPPROTO_UDP) || - (skb->len < (ETH_HLEN + - (ip_hdr(skb)->ihl << 2) + - sizeof(struct udphdr)))) { + + if (ip_hdr(skb)->protocol != IPPROTO_UDP || + skb->len < (ETH_HLEN + ip_hdrlen(skb) + sizeof(struct udphdr))) { skb_reset_network_header(skb); return csum; } - skb_set_transport_header(skb, - ETH_HLEN + (ip_hdr(skb)->ihl << 2)); + skb_set_transport_header(skb, ETH_HLEN + ip_hdrlen(skb)); csum = udp_hdr(skb)->check; skb_reset_transport_header(skb); skb_reset_network_header(skb); -- cgit From a9a18e8f770c9b0703dab93580d0b02e199a4c79 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 9 Aug 2024 15:28:19 +0300 Subject: atm: idt77252: prevent use after free in dequeue_rx() We can't dereference "skb" after calling vcc->push() because the skb is released. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- drivers/atm/idt77252.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c index e7f713cd70d3..a876024d8a05 100644 --- a/drivers/atm/idt77252.c +++ b/drivers/atm/idt77252.c @@ -1118,8 +1118,8 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) rpp->len += skb->len; if (stat & SAR_RSQE_EPDU) { + unsigned int len, truesize; unsigned char *l1l2; - unsigned int len; l1l2 = (unsigned char *) ((unsigned long) skb->data + skb->len - 6); @@ -1189,14 +1189,15 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) ATM_SKB(skb)->vcc = vcc; __net_timestamp(skb); + truesize = skb->truesize; vcc->push(vcc, skb); atomic_inc(&vcc->stats->rx); - if (skb->truesize > SAR_FB_SIZE_3) + if (truesize > SAR_FB_SIZE_3) add_rx_skb(card, 3, SAR_FB_SIZE_3, 1); - else if (skb->truesize > SAR_FB_SIZE_2) + else if (truesize > SAR_FB_SIZE_2) add_rx_skb(card, 2, SAR_FB_SIZE_2, 1); - else if (skb->truesize > SAR_FB_SIZE_1) + else if (truesize > SAR_FB_SIZE_1) add_rx_skb(card, 1, SAR_FB_SIZE_1, 1); else add_rx_skb(card, 0, SAR_FB_SIZE_0, 1); -- cgit From 9ff2f816e2aa65ca9a1cdf0954842f8173c0f48d Mon Sep 17 00:00:00 2001 From: Radhey Shyam Pandey Date: Fri, 9 Aug 2024 11:56:09 +0530 Subject: net: axienet: Fix register defines comment description In axiethernet header fix register defines comment description to be inline with IP documentation. It updates MAC configuration register, MDIO configuration register and frame filter control description. Fixes: 8a3b7a252dca ("drivers/net/ethernet/xilinx: added Xilinx AXI Ethernet driver") Signed-off-by: Radhey Shyam Pandey Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- drivers/net/ethernet/xilinx/xilinx_axienet.h | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet.h b/drivers/net/ethernet/xilinx/xilinx_axienet.h index fa5500decc96..c7d9221fafdc 100644 --- a/drivers/net/ethernet/xilinx/xilinx_axienet.h +++ b/drivers/net/ethernet/xilinx/xilinx_axienet.h @@ -160,16 +160,16 @@ #define XAE_RCW1_OFFSET 0x00000404 /* Rx Configuration Word 1 */ #define XAE_TC_OFFSET 0x00000408 /* Tx Configuration */ #define XAE_FCC_OFFSET 0x0000040C /* Flow Control Configuration */ -#define XAE_EMMC_OFFSET 0x00000410 /* EMAC mode configuration */ -#define XAE_PHYC_OFFSET 0x00000414 /* RGMII/SGMII configuration */ +#define XAE_EMMC_OFFSET 0x00000410 /* MAC speed configuration */ +#define XAE_PHYC_OFFSET 0x00000414 /* RX Max Frame Configuration */ #define XAE_ID_OFFSET 0x000004F8 /* Identification register */ -#define XAE_MDIO_MC_OFFSET 0x00000500 /* MII Management Config */ -#define XAE_MDIO_MCR_OFFSET 0x00000504 /* MII Management Control */ -#define XAE_MDIO_MWD_OFFSET 0x00000508 /* MII Management Write Data */ -#define XAE_MDIO_MRD_OFFSET 0x0000050C /* MII Management Read Data */ +#define XAE_MDIO_MC_OFFSET 0x00000500 /* MDIO Setup */ +#define XAE_MDIO_MCR_OFFSET 0x00000504 /* MDIO Control */ +#define XAE_MDIO_MWD_OFFSET 0x00000508 /* MDIO Write Data */ +#define XAE_MDIO_MRD_OFFSET 0x0000050C /* MDIO Read Data */ #define XAE_UAW0_OFFSET 0x00000700 /* Unicast address word 0 */ #define XAE_UAW1_OFFSET 0x00000704 /* Unicast address word 1 */ -#define XAE_FMI_OFFSET 0x00000708 /* Filter Mask Index */ +#define XAE_FMI_OFFSET 0x00000708 /* Frame Filter Control */ #define XAE_AF0_OFFSET 0x00000710 /* Address Filter 0 */ #define XAE_AF1_OFFSET 0x00000714 /* Address Filter 1 */ @@ -308,7 +308,7 @@ */ #define XAE_UAW1_UNICASTADDR_MASK 0x0000FFFF -/* Bit masks for Axi Ethernet FMI register */ +/* Bit masks for Axi Ethernet FMC register */ #define XAE_FMI_PM_MASK 0x80000000 /* Promis. mode enable */ #define XAE_FMI_IND_MASK 0x00000003 /* Index Mask */ -- cgit From 63796bc2e97cd5ebcef60bad4953259d4ad11cb4 Mon Sep 17 00:00:00 2001 From: Pawel Dembicki Date: Fri, 9 Aug 2024 21:38:02 +0200 Subject: net: dsa: vsc73xx: fix port MAC configuration in full duplex mode According to the datasheet description ("Port Mode Procedure" in 5.6.2), the VSC73XX_MAC_CFG_WEXC_DIS bit is configured only for half duplex mode. The WEXC_DIS bit is responsible for MAC behavior after an excessive collision. Let's set it as described in the datasheet. Fixes: 05bd97fc559d ("net: dsa: Add Vitesse VSC73xx DSA router driver") Reviewed-by: Linus Walleij Reviewed-by: Florian Fainelli Signed-off-by: Pawel Dembicki Signed-off-by: David S. Miller --- drivers/net/dsa/vitesse-vsc73xx-core.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/dsa/vitesse-vsc73xx-core.c b/drivers/net/dsa/vitesse-vsc73xx-core.c index d9d3e30fd47a..f548ed4cb23f 100644 --- a/drivers/net/dsa/vitesse-vsc73xx-core.c +++ b/drivers/net/dsa/vitesse-vsc73xx-core.c @@ -957,6 +957,11 @@ static void vsc73xx_mac_link_up(struct phylink_config *config, if (duplex == DUPLEX_FULL) val |= VSC73XX_MAC_CFG_FDX; + else + /* In datasheet description ("Port Mode Procedure" in 5.6.2) + * this bit is configured only for half duplex. + */ + val |= VSC73XX_MAC_CFG_WEXC_DIS; /* This routine is described in the datasheet (below ARBDISC register * description) @@ -967,7 +972,6 @@ static void vsc73xx_mac_link_up(struct phylink_config *config, get_random_bytes(&seed, 1); val |= seed << VSC73XX_MAC_CFG_SEED_OFFSET; val |= VSC73XX_MAC_CFG_SEED_LOAD; - val |= VSC73XX_MAC_CFG_WEXC_DIS; /* Those bits are responsible for MTU only. Kernel takes care about MTU, * let's enable +8 bytes frame length unconditionally. -- cgit From 5b9eebc2c7a5f0cc7950d918c1e8a4ad4bed5010 Mon Sep 17 00:00:00 2001 From: Pawel Dembicki Date: Fri, 9 Aug 2024 21:38:03 +0200 Subject: net: dsa: vsc73xx: pass value in phy_write operation In the 'vsc73xx_phy_write' function, the register value is missing, and the phy write operation always sends zeros. This commit passes the value variable into the proper register. Fixes: 05bd97fc559d ("net: dsa: Add Vitesse VSC73xx DSA router driver") Reviewed-by: Linus Walleij Reviewed-by: Florian Fainelli Signed-off-by: Pawel Dembicki Signed-off-by: David S. Miller --- drivers/net/dsa/vitesse-vsc73xx-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/dsa/vitesse-vsc73xx-core.c b/drivers/net/dsa/vitesse-vsc73xx-core.c index f548ed4cb23f..4b300c293dec 100644 --- a/drivers/net/dsa/vitesse-vsc73xx-core.c +++ b/drivers/net/dsa/vitesse-vsc73xx-core.c @@ -574,7 +574,7 @@ static int vsc73xx_phy_write(struct dsa_switch *ds, int phy, int regnum, return 0; } - cmd = (phy << 21) | (regnum << 16); + cmd = (phy << 21) | (regnum << 16) | val; ret = vsc73xx_write(vsc, VSC73XX_BLOCK_MII, 0, 1, cmd); if (ret) return ret; -- cgit From fa63c6434b6f6aaf9d8d599dc899bc0a074cc0ad Mon Sep 17 00:00:00 2001 From: Pawel Dembicki Date: Fri, 9 Aug 2024 21:38:04 +0200 Subject: net: dsa: vsc73xx: check busy flag in MDIO operations The VSC73xx has a busy flag used during MDIO operations. It is raised when MDIO read/write operations are in progress. Without it, PHYs are misconfigured and bus operations do not work as expected. Fixes: 05bd97fc559d ("net: dsa: Add Vitesse VSC73xx DSA router driver") Reviewed-by: Linus Walleij Reviewed-by: Florian Fainelli Signed-off-by: Pawel Dembicki Signed-off-by: David S. Miller --- drivers/net/dsa/vitesse-vsc73xx-core.c | 37 +++++++++++++++++++++++++++++++++- 1 file changed, 36 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/dsa/vitesse-vsc73xx-core.c b/drivers/net/dsa/vitesse-vsc73xx-core.c index 4b300c293dec..a789b2da9b7d 100644 --- a/drivers/net/dsa/vitesse-vsc73xx-core.c +++ b/drivers/net/dsa/vitesse-vsc73xx-core.c @@ -40,6 +40,10 @@ #define VSC73XX_BLOCK_ARBITER 0x5 /* Only subblock 0 */ #define VSC73XX_BLOCK_SYSTEM 0x7 /* Only subblock 0 */ +/* MII Block subblock */ +#define VSC73XX_BLOCK_MII_INTERNAL 0x0 /* Internal MDIO subblock */ +#define VSC73XX_BLOCK_MII_EXTERNAL 0x1 /* External MDIO subblock */ + #define CPU_PORT 6 /* CPU port */ /* MAC Block registers */ @@ -225,6 +229,8 @@ #define VSC73XX_MII_CMD 0x1 #define VSC73XX_MII_DATA 0x2 +#define VSC73XX_MII_STAT_BUSY BIT(3) + /* Arbiter block 5 registers */ #define VSC73XX_ARBEMPTY 0x0c #define VSC73XX_ARBDISC 0x0e @@ -299,6 +305,7 @@ #define IS_739X(a) (IS_7395(a) || IS_7398(a)) #define VSC73XX_POLL_SLEEP_US 1000 +#define VSC73XX_MDIO_POLL_SLEEP_US 5 #define VSC73XX_POLL_TIMEOUT_US 10000 struct vsc73xx_counter { @@ -527,6 +534,22 @@ static int vsc73xx_detect(struct vsc73xx *vsc) return 0; } +static int vsc73xx_mdio_busy_check(struct vsc73xx *vsc) +{ + int ret, err; + u32 val; + + ret = read_poll_timeout(vsc73xx_read, err, + err < 0 || !(val & VSC73XX_MII_STAT_BUSY), + VSC73XX_MDIO_POLL_SLEEP_US, + VSC73XX_POLL_TIMEOUT_US, false, vsc, + VSC73XX_BLOCK_MII, VSC73XX_BLOCK_MII_INTERNAL, + VSC73XX_MII_STAT, &val); + if (ret) + return ret; + return err; +} + static int vsc73xx_phy_read(struct dsa_switch *ds, int phy, int regnum) { struct vsc73xx *vsc = ds->priv; @@ -534,12 +557,20 @@ static int vsc73xx_phy_read(struct dsa_switch *ds, int phy, int regnum) u32 val; int ret; + ret = vsc73xx_mdio_busy_check(vsc); + if (ret) + return ret; + /* Setting bit 26 means "read" */ cmd = BIT(26) | (phy << 21) | (regnum << 16); ret = vsc73xx_write(vsc, VSC73XX_BLOCK_MII, 0, 1, cmd); if (ret) return ret; - msleep(2); + + ret = vsc73xx_mdio_busy_check(vsc); + if (ret) + return ret; + ret = vsc73xx_read(vsc, VSC73XX_BLOCK_MII, 0, 2, &val); if (ret) return ret; @@ -563,6 +594,10 @@ static int vsc73xx_phy_write(struct dsa_switch *ds, int phy, int regnum, u32 cmd; int ret; + ret = vsc73xx_mdio_busy_check(vsc); + if (ret) + return ret; + /* It was found through tedious experiments that this router * chip really hates to have it's PHYs reset. They * never recover if that happens: autonegotiation stops -- cgit From 9f9a72654622bae75adb1e1923d709e96ede3042 Mon Sep 17 00:00:00 2001 From: Pawel Dembicki Date: Fri, 9 Aug 2024 21:38:05 +0200 Subject: net: dsa: vsc73xx: allow phy resetting Resetting the VSC73xx PHY was problematic because the MDIO bus, without a busy check, read and wrote incorrect register values. My investigation indicates that resetting the PHY only triggers changes in configuration. However, improper register values written earlier were only exposed after a soft reset. The reset itself wasn't the issue; rather, the problem stemmed from incorrect read and write operations. A 'soft_reset' can now proceed normally. There are no reasons to keep the VSC73xx from being reset. This commit removes the reset blockade in the 'vsc73xx_phy_write' function. Reviewed-by: Linus Walleij Reviewed-by: Florian Fainelli Signed-off-by: Pawel Dembicki Signed-off-by: David S. Miller --- drivers/net/dsa/vitesse-vsc73xx-core.c | 11 ----------- 1 file changed, 11 deletions(-) (limited to 'drivers') diff --git a/drivers/net/dsa/vitesse-vsc73xx-core.c b/drivers/net/dsa/vitesse-vsc73xx-core.c index a789b2da9b7d..e3f95d2cc2c1 100644 --- a/drivers/net/dsa/vitesse-vsc73xx-core.c +++ b/drivers/net/dsa/vitesse-vsc73xx-core.c @@ -598,17 +598,6 @@ static int vsc73xx_phy_write(struct dsa_switch *ds, int phy, int regnum, if (ret) return ret; - /* It was found through tedious experiments that this router - * chip really hates to have it's PHYs reset. They - * never recover if that happens: autonegotiation stops - * working after a reset. Just filter out this command. - * (Resetting the whole chip is OK.) - */ - if (regnum == 0 && (val & BIT(15))) { - dev_info(vsc->dev, "reset PHY - disallowed\n"); - return 0; - } - cmd = (phy << 21) | (regnum << 16) | val; ret = vsc73xx_write(vsc, VSC73XX_BLOCK_MII, 0, 1, cmd); if (ret) -- cgit From de7a670f8defe4ed2115552ad23dea0f432f7be4 Mon Sep 17 00:00:00 2001 From: Pawel Dembicki Date: Fri, 9 Aug 2024 21:38:06 +0200 Subject: net: phy: vitesse: repair vsc73xx autonegotiation When the vsc73xx mdio bus work properly, the generic autonegotiation configuration works well. Reviewed-by: Linus Walleij Signed-off-by: Pawel Dembicki Signed-off-by: David S. Miller --- drivers/net/phy/vitesse.c | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'drivers') diff --git a/drivers/net/phy/vitesse.c b/drivers/net/phy/vitesse.c index 897b979ec03c..3b5fcaf0dd36 100644 --- a/drivers/net/phy/vitesse.c +++ b/drivers/net/phy/vitesse.c @@ -237,16 +237,6 @@ static int vsc739x_config_init(struct phy_device *phydev) return 0; } -static int vsc73xx_config_aneg(struct phy_device *phydev) -{ - /* The VSC73xx switches does not like to be instructed to - * do autonegotiation in any way, it prefers that you just go - * with the power-on/reset defaults. Writing some registers will - * just make autonegotiation permanently fail. - */ - return 0; -} - /* This adds a skew for both TX and RX clocks, so the skew should only be * applied to "rgmii-id" interfaces. It may not work as expected * on "rgmii-txid", "rgmii-rxid" or "rgmii" interfaces. @@ -444,7 +434,6 @@ static struct phy_driver vsc82xx_driver[] = { .phy_id_mask = 0x000ffff0, /* PHY_GBIT_FEATURES */ .config_init = vsc738x_config_init, - .config_aneg = vsc73xx_config_aneg, .read_page = vsc73xx_read_page, .write_page = vsc73xx_write_page, }, { @@ -453,7 +442,6 @@ static struct phy_driver vsc82xx_driver[] = { .phy_id_mask = 0x000ffff0, /* PHY_GBIT_FEATURES */ .config_init = vsc738x_config_init, - .config_aneg = vsc73xx_config_aneg, .read_page = vsc73xx_read_page, .write_page = vsc73xx_write_page, }, { @@ -462,7 +450,6 @@ static struct phy_driver vsc82xx_driver[] = { .phy_id_mask = 0x000ffff0, /* PHY_GBIT_FEATURES */ .config_init = vsc739x_config_init, - .config_aneg = vsc73xx_config_aneg, .read_page = vsc73xx_read_page, .write_page = vsc73xx_write_page, }, { @@ -471,7 +458,6 @@ static struct phy_driver vsc82xx_driver[] = { .phy_id_mask = 0x000ffff0, /* PHY_GBIT_FEATURES */ .config_init = vsc739x_config_init, - .config_aneg = vsc73xx_config_aneg, .read_page = vsc73xx_read_page, .write_page = vsc73xx_write_page, }, { -- cgit From 32316f676b4ee87c0404d333d248ccf777f739bc Mon Sep 17 00:00:00 2001 From: Haiyang Zhang Date: Fri, 9 Aug 2024 14:01:24 -0700 Subject: net: mana: Fix RX buf alloc_size alignment and atomic op panic The MANA driver's RX buffer alloc_size is passed into napi_build_skb() to create SKB. skb_shinfo(skb) is located at the end of skb, and its alignment is affected by the alloc_size passed into napi_build_skb(). The size needs to be aligned properly for better performance and atomic operations. Otherwise, on ARM64 CPU, for certain MTU settings like 4000, atomic operations may panic on the skb_shinfo(skb)->dataref due to alignment fault. To fix this bug, add proper alignment to the alloc_size calculation. Sample panic info: [ 253.298819] Unable to handle kernel paging request at virtual address ffff000129ba5cce [ 253.300900] Mem abort info: [ 253.301760] ESR = 0x0000000096000021 [ 253.302825] EC = 0x25: DABT (current EL), IL = 32 bits [ 253.304268] SET = 0, FnV = 0 [ 253.305172] EA = 0, S1PTW = 0 [ 253.306103] FSC = 0x21: alignment fault Call trace: __skb_clone+0xfc/0x198 skb_clone+0x78/0xe0 raw6_local_deliver+0xfc/0x228 ip6_protocol_deliver_rcu+0x80/0x500 ip6_input_finish+0x48/0x80 ip6_input+0x48/0xc0 ip6_sublist_rcv_finish+0x50/0x78 ip6_sublist_rcv+0x1cc/0x2b8 ipv6_list_rcv+0x100/0x150 __netif_receive_skb_list_core+0x180/0x220 netif_receive_skb_list_internal+0x198/0x2a8 __napi_poll+0x138/0x250 net_rx_action+0x148/0x330 handle_softirqs+0x12c/0x3a0 Cc: stable@vger.kernel.org Fixes: 80f6215b450e ("net: mana: Add support for jumbo frame") Signed-off-by: Haiyang Zhang Reviewed-by: Long Li Signed-off-by: David S. Miller --- drivers/net/ethernet/microsoft/mana/mana_en.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c index d2f07e179e86..ae717d06e66f 100644 --- a/drivers/net/ethernet/microsoft/mana/mana_en.c +++ b/drivers/net/ethernet/microsoft/mana/mana_en.c @@ -599,7 +599,11 @@ static void mana_get_rxbuf_cfg(int mtu, u32 *datasize, u32 *alloc_size, else *headroom = XDP_PACKET_HEADROOM; - *alloc_size = mtu + MANA_RXBUF_PAD + *headroom; + *alloc_size = SKB_DATA_ALIGN(mtu + MANA_RXBUF_PAD + *headroom); + + /* Using page pool in this case, so alloc_size is PAGE_SIZE */ + if (*alloc_size < PAGE_SIZE) + *alloc_size = PAGE_SIZE; *datasize = mtu + ETH_HLEN; } -- cgit From db1b4bedb9b97c6d34b03d03815147c04fffe8b4 Mon Sep 17 00:00:00 2001 From: Zheng Zhang Date: Sat, 10 Aug 2024 13:26:51 +0800 Subject: net: ethernet: mtk_wed: fix use-after-free panic in mtk_wed_setup_tc_block_cb() When there are multiple ap interfaces on one band and with WED on, turning the interface down will cause a kernel panic on MT798X. Previously, cb_priv was freed in mtk_wed_setup_tc_block() without marking NULL,and mtk_wed_setup_tc_block_cb() didn't check the value, too. Assign NULL after free cb_priv in mtk_wed_setup_tc_block() and check NULL in mtk_wed_setup_tc_block_cb(). ---------- Unable to handle kernel paging request at virtual address 0072460bca32b4f5 Call trace: mtk_wed_setup_tc_block_cb+0x4/0x38 0xffffffc0794084bc tcf_block_playback_offloads+0x70/0x1e8 tcf_block_unbind+0x6c/0xc8 ... --------- Fixes: 799684448e3e ("net: ethernet: mtk_wed: introduce wed wo support") Signed-off-by: Zheng Zhang Signed-off-by: David S. Miller --- drivers/net/ethernet/mediatek/mtk_wed.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mediatek/mtk_wed.c b/drivers/net/ethernet/mediatek/mtk_wed.c index 61334a71058c..e212a4ba9275 100644 --- a/drivers/net/ethernet/mediatek/mtk_wed.c +++ b/drivers/net/ethernet/mediatek/mtk_wed.c @@ -2666,14 +2666,15 @@ mtk_wed_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_pri { struct mtk_wed_flow_block_priv *priv = cb_priv; struct flow_cls_offload *cls = type_data; - struct mtk_wed_hw *hw = priv->hw; + struct mtk_wed_hw *hw = NULL; - if (!tc_can_offload(priv->dev)) + if (!priv || !tc_can_offload(priv->dev)) return -EOPNOTSUPP; if (type != TC_SETUP_CLSFLOWER) return -EOPNOTSUPP; + hw = priv->hw; return mtk_flow_offload_cmd(hw->eth, cls, hw->index); } @@ -2729,6 +2730,7 @@ mtk_wed_setup_tc_block(struct mtk_wed_hw *hw, struct net_device *dev, flow_block_cb_remove(block_cb, f); list_del(&block_cb->driver_list); kfree(block_cb->cb_priv); + block_cb->cb_priv = NULL; } return 0; default: -- cgit From 6e1918ff680527ce4be77426aa537012b5aa997c Mon Sep 17 00:00:00 2001 From: Kuniyuki Iwashima Date: Wed, 7 Aug 2024 21:00:21 -0700 Subject: net: macb: Use rcu_dereference() for idev->ifa_list in macb_suspend(). In macb_suspend(), idev->ifa_list is fetched with rcu_access_pointer() and later the pointer is dereferenced as ifa->ifa_local. So, idev->ifa_list must be fetched with rcu_dereference(). Fixes: 0cb8de39a776 ("net: macb: Add ARP support to WOL") Signed-off-by: Kuniyuki Iwashima Link: https://patch.msgid.link/20240808040021.6971-1-kuniyu@amazon.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/cadence/macb_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index 11665be3a22c..dcd3f54ed0cf 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -5250,8 +5250,8 @@ static int __maybe_unused macb_suspend(struct device *dev) if (bp->wol & MACB_WOL_ENABLED) { /* Check for IP address in WOL ARP mode */ idev = __in_dev_get_rcu(bp->dev); - if (idev && idev->ifa_list) - ifa = rcu_access_pointer(idev->ifa_list); + if (idev) + ifa = rcu_dereference(idev->ifa_list); if ((bp->wolopts & WAKE_ARP) && !ifa) { netdev_err(netdev, "IP address not assigned as required by WoL walk ARP\n"); return -EOPNOTSUPP; -- cgit From 479ffee68d59c599f8aed8fa2dcc8e13e7bd13c3 Mon Sep 17 00:00:00 2001 From: Bert Karwatzki Date: Mon, 12 Aug 2024 12:45:41 +0200 Subject: wifi: mt76: mt7921: fix NULL pointer access in mt7921_ipv6_addr_change When disabling wifi mt7921_ipv6_addr_change() is called as a notifier. At this point mvif->phy is already NULL so we cannot use it here. Signed-off-by: Bert Karwatzki Signed-off-by: Felix Fietkau Signed-off-by: Kalle Valo Link: https://patch.msgid.link/20240812104542.80760-1-spasswolf@web.de --- drivers/net/wireless/mediatek/mt76/mt7921/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c index 1bab93d049df..23b228804289 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c @@ -1183,7 +1183,7 @@ static void mt7921_ipv6_addr_change(struct ieee80211_hw *hw, struct inet6_dev *idev) { struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv; - struct mt792x_dev *dev = mvif->phy->dev; + struct mt792x_dev *dev = mt792x_hw_dev(hw); struct inet6_ifaddr *ifa; struct in6_addr ns_addrs[IEEE80211_BSS_ARP_ADDR_LIST_LEN]; struct sk_buff *skb; -- cgit From 38c8d02501c09454e4fbf0f67de03de35e94d384 Mon Sep 17 00:00:00 2001 From: Benjamin Berg Date: Mon, 12 Aug 2024 13:06:40 +0200 Subject: wifi: iwlwifi: correctly lookup DMA address in SG table The code to lookup the scatter gather table entry assumed that it was possible to use sg_virt() in order to lookup the DMA address in a mapped scatter gather table. However, this assumption is incorrect as the DMA mapping code may merge multiple entries into one. In that case, the DMA address space may have e.g. two consecutive pages which is correctly represented by the scatter gather list entry, however the virtual addresses for these two pages may differ and the relationship cannot be resolved anymore. Avoid this problem entirely by working with the offset into the mapped area instead of using virtual addresses. With that we only use the DMA length and DMA address from the scatter gather list entries. The underlying DMA/IOMMU code is therefore free to merge two entries into one even if the virtual addresses space for the area is not continuous. Fixes: 90db50755228 ("wifi: iwlwifi: use already mapped data when TXing an AMSDU") Reported-by: Chris Bainbridge Closes: https://lore.kernel.org/r/ZrNRoEbdkxkKFMBi@debian.local Signed-off-by: Benjamin Berg Tested-by: Chris Bainbridge Signed-off-by: Kalle Valo Link: https://patch.msgid.link/20240812110640.460514-1-benjamin@sipsolutions.net --- drivers/net/wireless/intel/iwlwifi/pcie/internal.h | 3 +- drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c | 5 +++- drivers/net/wireless/intel/iwlwifi/pcie/tx.c | 32 +++++++++++++++------- 3 files changed, 28 insertions(+), 12 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h index b59de4f80b4b..27a7e0b5b3d5 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h +++ b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h @@ -639,7 +639,8 @@ void iwl_trans_pcie_tx_reset(struct iwl_trans *trans); int iwl_pcie_txq_alloc(struct iwl_trans *trans, struct iwl_txq *txq, int slots_num, bool cmd_queue); -dma_addr_t iwl_pcie_get_sgt_tb_phys(struct sg_table *sgt, void *addr); +dma_addr_t iwl_pcie_get_sgt_tb_phys(struct sg_table *sgt, unsigned int offset, + unsigned int len); struct sg_table *iwl_pcie_prep_tso(struct iwl_trans *trans, struct sk_buff *skb, struct iwl_cmd_meta *cmd_meta, u8 **hdr, unsigned int hdr_room); diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c index 2e780fb2da42..b1846abb99b7 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c @@ -168,6 +168,7 @@ static int iwl_txq_gen2_build_amsdu(struct iwl_trans *trans, struct ieee80211_hdr *hdr = (void *)skb->data; unsigned int snap_ip_tcp_hdrlen, ip_hdrlen, total_len, hdr_room; unsigned int mss = skb_shinfo(skb)->gso_size; + unsigned int data_offset = 0; dma_addr_t start_hdr_phys; u16 length, amsdu_pad; u8 *start_hdr; @@ -260,7 +261,8 @@ static int iwl_txq_gen2_build_amsdu(struct iwl_trans *trans, int ret; tb_len = min_t(unsigned int, tso.size, data_left); - tb_phys = iwl_pcie_get_sgt_tb_phys(sgt, tso.data); + tb_phys = iwl_pcie_get_sgt_tb_phys(sgt, data_offset, + tb_len); /* Not a real mapping error, use direct comparison */ if (unlikely(tb_phys == DMA_MAPPING_ERROR)) goto out_err; @@ -272,6 +274,7 @@ static int iwl_txq_gen2_build_amsdu(struct iwl_trans *trans, goto out_err; data_left -= tb_len; + data_offset += tb_len; tso_build_data(skb, &tso, tb_len); } } diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c index 22d482ae53d9..9fe050f0ddc1 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c @@ -1814,23 +1814,31 @@ out: /** * iwl_pcie_get_sgt_tb_phys - Find TB address in mapped SG list * @sgt: scatter gather table - * @addr: Virtual address + * @offset: Offset into the mapped memory (i.e. SKB payload data) + * @len: Length of the area * - * Find the entry that includes the address for the given address and return - * correct physical address for the TB entry. + * Find the DMA address that corresponds to the SKB payload data at the + * position given by @offset. * * Returns: Address for TB entry */ -dma_addr_t iwl_pcie_get_sgt_tb_phys(struct sg_table *sgt, void *addr) +dma_addr_t iwl_pcie_get_sgt_tb_phys(struct sg_table *sgt, unsigned int offset, + unsigned int len) { struct scatterlist *sg; + unsigned int sg_offset = 0; int i; + /* + * Search the mapped DMA areas in the SG for the area that contains the + * data at offset with the given length. + */ for_each_sgtable_dma_sg(sgt, sg, i) { - if (addr >= sg_virt(sg) && - (u8 *)addr < (u8 *)sg_virt(sg) + sg_dma_len(sg)) - return sg_dma_address(sg) + - ((unsigned long)addr - (unsigned long)sg_virt(sg)); + if (offset >= sg_offset && + offset + len <= sg_offset + sg_dma_len(sg)) + return sg_dma_address(sg) + offset - sg_offset; + + sg_offset += sg_dma_len(sg); } WARN_ON_ONCE(1); @@ -1875,7 +1883,9 @@ struct sg_table *iwl_pcie_prep_tso(struct iwl_trans *trans, struct sk_buff *skb, sg_init_table(sgt->sgl, skb_shinfo(skb)->nr_frags + 1); - sgt->orig_nents = skb_to_sgvec(skb, sgt->sgl, 0, skb->len); + /* Only map the data, not the header (it is copied to the TSO page) */ + sgt->orig_nents = skb_to_sgvec(skb, sgt->sgl, skb_headlen(skb), + skb->data_len); if (WARN_ON_ONCE(sgt->orig_nents <= 0)) return NULL; @@ -1900,6 +1910,7 @@ static int iwl_fill_data_tbs_amsdu(struct iwl_trans *trans, struct sk_buff *skb, struct ieee80211_hdr *hdr = (void *)skb->data; unsigned int snap_ip_tcp_hdrlen, ip_hdrlen, total_len, hdr_room; unsigned int mss = skb_shinfo(skb)->gso_size; + unsigned int data_offset = 0; u16 length, iv_len, amsdu_pad; dma_addr_t start_hdr_phys; u8 *start_hdr, *pos_hdr; @@ -2000,7 +2011,7 @@ static int iwl_fill_data_tbs_amsdu(struct iwl_trans *trans, struct sk_buff *skb, data_left); dma_addr_t tb_phys; - tb_phys = iwl_pcie_get_sgt_tb_phys(sgt, tso.data); + tb_phys = iwl_pcie_get_sgt_tb_phys(sgt, data_offset, size); /* Not a real mapping error, use direct comparison */ if (unlikely(tb_phys == DMA_MAPPING_ERROR)) return -EINVAL; @@ -2011,6 +2022,7 @@ static int iwl_fill_data_tbs_amsdu(struct iwl_trans *trans, struct sk_buff *skb, tb_phys, size); data_left -= size; + data_offset += size; tso_build_data(skb, &tso, size); } } -- cgit From 58a63729c957621f1990c3494c702711188ca347 Mon Sep 17 00:00:00 2001 From: Long Li Date: Fri, 9 Aug 2024 08:58:58 -0700 Subject: net: mana: Fix doorbell out of order violation and avoid unnecessary doorbell rings After napi_complete_done() is called when NAPI is polling in the current process context, another NAPI may be scheduled and start running in softirq on another CPU and may ring the doorbell before the current CPU does. When combined with unnecessary rings when there is no need to arm the CQ, it triggers error paths in the hardware. This patch fixes this by calling napi_complete_done() after doorbell rings. It limits the number of unnecessary rings when there is no need to arm. MANA hardware specifies that there must be one doorbell ring every 8 CQ wraparounds. This driver guarantees one doorbell ring as soon as the number of consumed CQEs exceeds 4 CQ wraparounds. In practical workloads, the 4 CQ wraparounds proves to be big enough that it rarely exceeds this limit before all the napi weight is consumed. To implement this, add a per-CQ counter cq->work_done_since_doorbell, and make sure the CQ is armed as soon as passing 4 wraparounds of the CQ. Cc: stable@vger.kernel.org Fixes: e1b5683ff62e ("net: mana: Move NAPI from EQ to CQ") Reviewed-by: Haiyang Zhang Signed-off-by: Long Li Link: https://patch.msgid.link/1723219138-29887-1-git-send-email-longli@linuxonhyperv.com Signed-off-by: Paolo Abeni --- drivers/net/ethernet/microsoft/mana/mana_en.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c index ae717d06e66f..39f56973746d 100644 --- a/drivers/net/ethernet/microsoft/mana/mana_en.c +++ b/drivers/net/ethernet/microsoft/mana/mana_en.c @@ -1792,7 +1792,6 @@ static void mana_poll_rx_cq(struct mana_cq *cq) static int mana_cq_handler(void *context, struct gdma_queue *gdma_queue) { struct mana_cq *cq = context; - u8 arm_bit; int w; WARN_ON_ONCE(cq->gdma_cq != gdma_queue); @@ -1803,16 +1802,23 @@ static int mana_cq_handler(void *context, struct gdma_queue *gdma_queue) mana_poll_tx_cq(cq); w = cq->work_done; - - if (w < cq->budget && - napi_complete_done(&cq->napi, w)) { - arm_bit = SET_ARM_BIT; - } else { - arm_bit = 0; + cq->work_done_since_doorbell += w; + + if (w < cq->budget) { + mana_gd_ring_cq(gdma_queue, SET_ARM_BIT); + cq->work_done_since_doorbell = 0; + napi_complete_done(&cq->napi, w); + } else if (cq->work_done_since_doorbell > + cq->gdma_cq->queue_size / COMP_ENTRY_SIZE * 4) { + /* MANA hardware requires at least one doorbell ring every 8 + * wraparounds of CQ even if there is no need to arm the CQ. + * This driver rings the doorbell as soon as we have exceeded + * 4 wraparounds. + */ + mana_gd_ring_cq(gdma_queue, 0); + cq->work_done_since_doorbell = 0; } - mana_gd_ring_cq(gdma_queue, arm_bit); - return w; } -- cgit From df934abb185c71c9f2fa07a5013672d0cbd36560 Mon Sep 17 00:00:00 2001 From: David Thompson Date: Fri, 9 Aug 2024 12:36:12 -0400 Subject: mlxbf_gige: disable RX filters until RX path initialized A recent change to the driver exposed a bug where the MAC RX filters (unicast MAC, broadcast MAC, and multicast MAC) are configured and enabled before the RX path is fully initialized. The result of this bug is that after the PHY is started packets that match these MAC RX filters start to flow into the RX FIFO. And then, after rx_init() is completed, these packets will go into the driver RX ring as well. If enough packets are received to fill the RX ring (default size is 128 packets) before the call to request_irq() completes, the driver RX function becomes stuck. This bug is intermittent but is most likely to be seen where the oob_net0 interface is connected to a busy network with lots of broadcast and multicast traffic. All the MAC RX filters must be disabled until the RX path is ready, i.e. all initialization is done and all the IRQs are installed. Fixes: f7442a634ac0 ("mlxbf_gige: call request_irq() after NAPI initialized") Reviewed-by: Asmaa Mnebhi Signed-off-by: David Thompson Reviewed-by: Simon Horman Link: https://patch.msgid.link/20240809163612.12852-1-davthompson@nvidia.com Signed-off-by: Paolo Abeni --- .../net/ethernet/mellanox/mlxbf_gige/mlxbf_gige.h | 8 ++++ .../ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c | 10 +++++ .../ethernet/mellanox/mlxbf_gige/mlxbf_gige_regs.h | 2 + .../ethernet/mellanox/mlxbf_gige/mlxbf_gige_rx.c | 50 +++++++++++++++++++--- 4 files changed, 64 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige.h b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige.h index bc94e75a7aeb..e7777700ee18 100644 --- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige.h +++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige.h @@ -40,6 +40,7 @@ */ #define MLXBF_GIGE_BCAST_MAC_FILTER_IDX 0 #define MLXBF_GIGE_LOCAL_MAC_FILTER_IDX 1 +#define MLXBF_GIGE_MAX_FILTER_IDX 3 /* Define for broadcast MAC literal */ #define BCAST_MAC_ADDR 0xFFFFFFFFFFFF @@ -175,6 +176,13 @@ enum mlxbf_gige_res { int mlxbf_gige_mdio_probe(struct platform_device *pdev, struct mlxbf_gige *priv); void mlxbf_gige_mdio_remove(struct mlxbf_gige *priv); + +void mlxbf_gige_enable_multicast_rx(struct mlxbf_gige *priv); +void mlxbf_gige_disable_multicast_rx(struct mlxbf_gige *priv); +void mlxbf_gige_enable_mac_rx_filter(struct mlxbf_gige *priv, + unsigned int index); +void mlxbf_gige_disable_mac_rx_filter(struct mlxbf_gige *priv, + unsigned int index); void mlxbf_gige_set_mac_rx_filter(struct mlxbf_gige *priv, unsigned int index, u64 dmac); void mlxbf_gige_get_mac_rx_filter(struct mlxbf_gige *priv, diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c index b157f0f1c5a8..385a56ac7348 100644 --- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c +++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c @@ -168,6 +168,10 @@ static int mlxbf_gige_open(struct net_device *netdev) if (err) goto napi_deinit; + mlxbf_gige_enable_mac_rx_filter(priv, MLXBF_GIGE_BCAST_MAC_FILTER_IDX); + mlxbf_gige_enable_mac_rx_filter(priv, MLXBF_GIGE_LOCAL_MAC_FILTER_IDX); + mlxbf_gige_enable_multicast_rx(priv); + /* Set bits in INT_EN that we care about */ int_en = MLXBF_GIGE_INT_EN_HW_ACCESS_ERROR | MLXBF_GIGE_INT_EN_TX_CHECKSUM_INPUTS | @@ -379,6 +383,7 @@ static int mlxbf_gige_probe(struct platform_device *pdev) void __iomem *plu_base; void __iomem *base; int addr, phy_irq; + unsigned int i; int err; base = devm_platform_ioremap_resource(pdev, MLXBF_GIGE_RES_MAC); @@ -423,6 +428,11 @@ static int mlxbf_gige_probe(struct platform_device *pdev) priv->rx_q_entries = MLXBF_GIGE_DEFAULT_RXQ_SZ; priv->tx_q_entries = MLXBF_GIGE_DEFAULT_TXQ_SZ; + for (i = 0; i <= MLXBF_GIGE_MAX_FILTER_IDX; i++) + mlxbf_gige_disable_mac_rx_filter(priv, i); + mlxbf_gige_disable_multicast_rx(priv); + mlxbf_gige_disable_promisc(priv); + /* Write initial MAC address to hardware */ mlxbf_gige_initial_mac(priv); diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_regs.h b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_regs.h index 98a8681c21b9..4d14cb13fd64 100644 --- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_regs.h +++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_regs.h @@ -62,6 +62,8 @@ #define MLXBF_GIGE_TX_STATUS_DATA_FIFO_FULL BIT(1) #define MLXBF_GIGE_RX_MAC_FILTER_DMAC_RANGE_START 0x0520 #define MLXBF_GIGE_RX_MAC_FILTER_DMAC_RANGE_END 0x0528 +#define MLXBF_GIGE_RX_MAC_FILTER_GENERAL 0x0530 +#define MLXBF_GIGE_RX_MAC_FILTER_EN_MULTICAST BIT(1) #define MLXBF_GIGE_RX_MAC_FILTER_COUNT_DISC 0x0540 #define MLXBF_GIGE_RX_MAC_FILTER_COUNT_DISC_EN BIT(0) #define MLXBF_GIGE_RX_MAC_FILTER_COUNT_PASS 0x0548 diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_rx.c b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_rx.c index 699984358493..eb62620b63c7 100644 --- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_rx.c +++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_rx.c @@ -11,15 +11,31 @@ #include "mlxbf_gige.h" #include "mlxbf_gige_regs.h" -void mlxbf_gige_set_mac_rx_filter(struct mlxbf_gige *priv, - unsigned int index, u64 dmac) +void mlxbf_gige_enable_multicast_rx(struct mlxbf_gige *priv) { void __iomem *base = priv->base; - u64 control; + u64 data; - /* Write destination MAC to specified MAC RX filter */ - writeq(dmac, base + MLXBF_GIGE_RX_MAC_FILTER + - (index * MLXBF_GIGE_RX_MAC_FILTER_STRIDE)); + data = readq(base + MLXBF_GIGE_RX_MAC_FILTER_GENERAL); + data |= MLXBF_GIGE_RX_MAC_FILTER_EN_MULTICAST; + writeq(data, base + MLXBF_GIGE_RX_MAC_FILTER_GENERAL); +} + +void mlxbf_gige_disable_multicast_rx(struct mlxbf_gige *priv) +{ + void __iomem *base = priv->base; + u64 data; + + data = readq(base + MLXBF_GIGE_RX_MAC_FILTER_GENERAL); + data &= ~MLXBF_GIGE_RX_MAC_FILTER_EN_MULTICAST; + writeq(data, base + MLXBF_GIGE_RX_MAC_FILTER_GENERAL); +} + +void mlxbf_gige_enable_mac_rx_filter(struct mlxbf_gige *priv, + unsigned int index) +{ + void __iomem *base = priv->base; + u64 control; /* Enable MAC receive filter mask for specified index */ control = readq(base + MLXBF_GIGE_CONTROL); @@ -27,6 +43,28 @@ void mlxbf_gige_set_mac_rx_filter(struct mlxbf_gige *priv, writeq(control, base + MLXBF_GIGE_CONTROL); } +void mlxbf_gige_disable_mac_rx_filter(struct mlxbf_gige *priv, + unsigned int index) +{ + void __iomem *base = priv->base; + u64 control; + + /* Disable MAC receive filter mask for specified index */ + control = readq(base + MLXBF_GIGE_CONTROL); + control &= ~(MLXBF_GIGE_CONTROL_EN_SPECIFIC_MAC << index); + writeq(control, base + MLXBF_GIGE_CONTROL); +} + +void mlxbf_gige_set_mac_rx_filter(struct mlxbf_gige *priv, + unsigned int index, u64 dmac) +{ + void __iomem *base = priv->base; + + /* Write destination MAC to specified MAC RX filter */ + writeq(dmac, base + MLXBF_GIGE_RX_MAC_FILTER + + (index * MLXBF_GIGE_RX_MAC_FILTER_STRIDE)); +} + void mlxbf_gige_get_mac_rx_filter(struct mlxbf_gige *priv, unsigned int index, u64 *dmac) { -- cgit From 1f1b194284093d619c9fbc7e9e38b2c68d0408e8 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Mon, 12 Aug 2024 15:13:22 +0100 Subject: net: thunder_bgx: Fix netdev structure allocation Commit 94833addfaba ("net: thunderx: Unembed netdev structure") had a go at dynamically allocating the netdev structures for the thunderx_bgx driver. This change results in my ThunderX box catching fire (to be fair, it is what it does best). The issues with this change are that: - bgx_lmac_enable() is called *after* bgx_acpi_register_phy() and bgx_init_of_phy(), both expecting netdev to be a valid pointer. - bgx_init_of_phy() populates the MAC addresses for *all* LMACs attached to a given BGX instance, and thus needs netdev for each of them to have been allocated. There is a few things to be said about how the driver mixes LMAC and BGX states which leads to this sorry state, but that's beside the point. To address this, go back to a situation where all netdev structures are allocated before the driver starts relying on them, and move the freeing of these structures to driver removal. Someone brave enough can always go and restructure the driver if they want. Fixes: 94833addfaba ("net: thunderx: Unembed netdev structure") Signed-off-by: Marc Zyngier Cc: Breno Leitao Cc: Sunil Goutham Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Reviewed-by: Simon Horman Reviewed-by: Breno Leitao Link: https://patch.msgid.link/20240812141322.1742918-1-maz@kernel.org Signed-off-by: Paolo Abeni --- drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 30 ++++++++++++++++------- 1 file changed, 21 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c index a40c266c37f2..608cc6af5af1 100644 --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c @@ -1054,18 +1054,12 @@ static int phy_interface_mode(u8 lmac_type) static int bgx_lmac_enable(struct bgx *bgx, u8 lmacid) { - struct lmac *lmac, **priv; + struct lmac *lmac; u64 cfg; lmac = &bgx->lmac[lmacid]; lmac->bgx = bgx; - lmac->netdev = alloc_netdev_dummy(sizeof(struct lmac *)); - if (!lmac->netdev) - return -ENOMEM; - priv = netdev_priv(lmac->netdev); - *priv = lmac; - if ((lmac->lmac_type == BGX_MODE_SGMII) || (lmac->lmac_type == BGX_MODE_QSGMII) || (lmac->lmac_type == BGX_MODE_RGMII)) { @@ -1191,7 +1185,6 @@ static void bgx_lmac_disable(struct bgx *bgx, u8 lmacid) (lmac->lmac_type != BGX_MODE_10G_KR) && lmac->phydev) phy_disconnect(lmac->phydev); - free_netdev(lmac->netdev); lmac->phydev = NULL; } @@ -1653,6 +1646,23 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent) bgx_get_qlm_mode(bgx); + for (lmac = 0; lmac < bgx->lmac_count; lmac++) { + struct lmac *lmacp, **priv; + + lmacp = &bgx->lmac[lmac]; + lmacp->netdev = alloc_netdev_dummy(sizeof(struct lmac *)); + + if (!lmacp->netdev) { + for (int i = 0; i < lmac; i++) + free_netdev(bgx->lmac[i].netdev); + err = -ENOMEM; + goto err_enable; + } + + priv = netdev_priv(lmacp->netdev); + *priv = lmacp; + } + err = bgx_init_phy(bgx); if (err) goto err_enable; @@ -1692,8 +1702,10 @@ static void bgx_remove(struct pci_dev *pdev) u8 lmac; /* Disable all LMACs */ - for (lmac = 0; lmac < bgx->lmac_count; lmac++) + for (lmac = 0; lmac < bgx->lmac_count; lmac++) { bgx_lmac_disable(bgx, lmac); + free_netdev(bgx->lmac[lmac].netdev); + } pci_free_irq(pdev, GMPX_GMI_TX_INT, bgx); -- cgit From cdc90f75387c42d64a0ed1ba03550ea9447249d4 Mon Sep 17 00:00:00 2001 From: Oleksij Rempel Date: Tue, 13 Aug 2024 09:37:19 +0200 Subject: pse-core: Conditionally set current limit during PI regulator registration Fix an issue where `devm_regulator_register()` would fail for PSE controllers that do not support current limit control, such as simple GPIO-based controllers like the podl-pse-regulator. The `REGULATOR_CHANGE_CURRENT` flag and `max_uA` constraint are now conditionally set only if the `pi_set_current_limit` operation is supported. This change prevents the regulator registration routine from attempting to call `pse_pi_set_current_limit()`, which would return `-EOPNOTSUPP` and cause the registration to fail. Fixes: 4a83abcef5f4f ("net: pse-pd: Add new power limit get and set c33 features") Signed-off-by: Oleksij Rempel Reviewed-by: Kory Maincent Tested-by: Kyle Swenson Link: https://patch.msgid.link/20240813073719.2304633-1-o.rempel@pengutronix.de Signed-off-by: Paolo Abeni --- drivers/net/pse-pd/pse_core.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/pse-pd/pse_core.c b/drivers/net/pse-pd/pse_core.c index ec20953e0f82..4f032b16a8a0 100644 --- a/drivers/net/pse-pd/pse_core.c +++ b/drivers/net/pse-pd/pse_core.c @@ -401,9 +401,14 @@ devm_pse_pi_regulator_register(struct pse_controller_dev *pcdev, rdesc->ops = &pse_pi_ops; rdesc->owner = pcdev->owner; - rinit_data->constraints.valid_ops_mask = REGULATOR_CHANGE_STATUS | - REGULATOR_CHANGE_CURRENT; - rinit_data->constraints.max_uA = MAX_PI_CURRENT; + rinit_data->constraints.valid_ops_mask = REGULATOR_CHANGE_STATUS; + + if (pcdev->ops->pi_set_current_limit) { + rinit_data->constraints.valid_ops_mask |= + REGULATOR_CHANGE_CURRENT; + rinit_data->constraints.max_uA = MAX_PI_CURRENT; + } + rinit_data->supply_regulator = "vpwr"; rconfig.dev = pcdev->dev; -- cgit From 8445d9d3c03101859663d34fda747f6a50947556 Mon Sep 17 00:00:00 2001 From: Jie Wang Date: Tue, 13 Aug 2024 22:10:20 +0800 Subject: net: hns3: fix wrong use of semaphore up Currently, if hns3 PF or VF FLR reset failed after five times retry, the reset done process will directly release the semaphore which has already released in hclge_reset_prepare_general. This will cause down operation fail. So this patch fixes it by adding reset state judgement. The up operation is only called after successful PF FLR reset. Fixes: 8627bdedc435 ("net: hns3: refactor the precedure of PF FLR") Fixes: f28368bb4542 ("net: hns3: refactor the procedure of VF FLR") Signed-off-by: Jie Wang Signed-off-by: Jijie Shao Signed-off-by: Paolo Abeni --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 4 ++-- drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index 82574ce0194f..125e04434611 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -11516,8 +11516,8 @@ static void hclge_reset_done(struct hnae3_ae_dev *ae_dev) dev_err(&hdev->pdev->dev, "fail to rebuild, ret=%d\n", ret); hdev->reset_type = HNAE3_NONE_RESET; - clear_bit(HCLGE_STATE_RST_HANDLING, &hdev->state); - up(&hdev->reset_sem); + if (test_and_clear_bit(HCLGE_STATE_RST_HANDLING, &hdev->state)) + up(&hdev->reset_sem); } static void hclge_clear_resetting_state(struct hclge_dev *hdev) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c index 3735d2fed11f..094a7c7b5592 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c @@ -1747,8 +1747,8 @@ static void hclgevf_reset_done(struct hnae3_ae_dev *ae_dev) ret); hdev->reset_type = HNAE3_NONE_RESET; - clear_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state); - up(&hdev->reset_sem); + if (test_and_clear_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state)) + up(&hdev->reset_sem); } static u32 hclgevf_get_fw_version(struct hnae3_handle *handle) -- cgit From 30545e17eac1f50c5ef49644daf6af205100a965 Mon Sep 17 00:00:00 2001 From: Peiyang Wang Date: Tue, 13 Aug 2024 22:10:21 +0800 Subject: net: hns3: use the user's cfg after reset Consider the followed case that the user change speed and reset the net interface. Before the hw change speed successfully, the driver get old old speed from hw by timer task. After reset, the previous speed is config to hw. As a result, the new speed is configed successfully but lost after PF reset. The followed pictured shows more dirrectly. +------+ +----+ +----+ | USER | | PF | | HW | +---+--+ +-+--+ +-+--+ | ethtool -s 100G | | +------------------>| set speed 100G | | +--------------------->| | | set successfully | | |<---------------------+---+ | |query cfg (timer task)| | | +--------------------->| | handle speed | | return 200G | | changing event | ethtool --reset |<---------------------+ | (100G) +------------------>| cfg previous speed |<--+ | | after reset (200G) | | +--------------------->| | | +---+ | |query cfg (timer task)| | | +--------------------->| | handle speed | | return 100G | | changing event | |<---------------------+ | (200G) | | |<--+ | |query cfg (timer task)| | +--------------------->| | | return 200G | | |<---------------------+ | | | v v v This patch save new speed if hw change speed successfully, which will be used after reset successfully. Fixes: 2d03eacc0b7e ("net: hns3: Only update mac configuation when necessary") Signed-off-by: Peiyang Wang Signed-off-by: Jijie Shao Signed-off-by: Paolo Abeni --- .../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 24 ++++++++++++++++------ .../ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c | 3 +++ 2 files changed, 21 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index 125e04434611..465f0d582283 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -2653,8 +2653,17 @@ static int hclge_cfg_mac_speed_dup_h(struct hnae3_handle *handle, int speed, { struct hclge_vport *vport = hclge_get_vport(handle); struct hclge_dev *hdev = vport->back; + int ret; + + ret = hclge_cfg_mac_speed_dup(hdev, speed, duplex, lane_num); - return hclge_cfg_mac_speed_dup(hdev, speed, duplex, lane_num); + if (ret) + return ret; + + hdev->hw.mac.req_speed = speed; + hdev->hw.mac.req_duplex = duplex; + + return 0; } static int hclge_set_autoneg_en(struct hclge_dev *hdev, bool enable) @@ -2956,17 +2965,20 @@ static int hclge_mac_init(struct hclge_dev *hdev) if (!test_bit(HCLGE_STATE_RST_HANDLING, &hdev->state)) hdev->hw.mac.duplex = HCLGE_MAC_FULL; - ret = hclge_cfg_mac_speed_dup_hw(hdev, hdev->hw.mac.speed, - hdev->hw.mac.duplex, hdev->hw.mac.lane_num); - if (ret) - return ret; - if (hdev->hw.mac.support_autoneg) { ret = hclge_set_autoneg_en(hdev, hdev->hw.mac.autoneg); if (ret) return ret; } + if (!hdev->hw.mac.autoneg) { + ret = hclge_cfg_mac_speed_dup_hw(hdev, hdev->hw.mac.req_speed, + hdev->hw.mac.req_duplex, + hdev->hw.mac.lane_num); + if (ret) + return ret; + } + mac->link = 0; if (mac->user_fec_mode & BIT(HNAE3_FEC_USER_DEF)) { diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c index 85fb11de43a1..80079657afeb 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c @@ -191,6 +191,9 @@ static void hclge_mac_adjust_link(struct net_device *netdev) if (ret) netdev_err(netdev, "failed to adjust link.\n"); + hdev->hw.mac.req_speed = (u32)speed; + hdev->hw.mac.req_duplex = (u8)duplex; + ret = hclge_cfg_flowctrl(hdev); if (ret) netdev_err(netdev, "failed to configure flow control.\n"); -- cgit From be5e816d00a506719e9dbb1a9c861c5ced30a109 Mon Sep 17 00:00:00 2001 From: Jie Wang Date: Tue, 13 Aug 2024 22:10:22 +0800 Subject: net: hns3: fix a deadlock problem when config TC during resetting MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When config TC during the reset process, may cause a deadlock, the flow is as below: pf reset start │ ▼ ...... setup tc │ │ ▼ ▼ DOWN: napi_disable() napi_disable()(skip) │ │ │ ▼ ▼ ...... ...... │ │ ▼ │ napi_enable() │ ▼ UINIT: netif_napi_del() │ ▼ ...... │ ▼ INIT: netif_napi_add() │ ▼ ...... global reset start │ │ ▼ ▼ UP: napi_enable()(skip) ...... │ │ ▼ ▼ ...... napi_disable() In reset process, the driver will DOWN the port and then UINIT, in this case, the setup tc process will UP the port before UINIT, so cause the problem. Adds a DOWN process in UINIT to fix it. Fixes: bb6b94a896d4 ("net: hns3: Add reset interface implementation in client") Signed-off-by: Jie Wang Signed-off-by: Jijie Shao Signed-off-by: Paolo Abeni --- drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index a5fc0209d628..4cbc4d069a1f 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -5724,6 +5724,9 @@ static int hns3_reset_notify_uninit_enet(struct hnae3_handle *handle) struct net_device *netdev = handle->kinfo.netdev; struct hns3_nic_priv *priv = netdev_priv(netdev); + if (!test_bit(HNS3_NIC_STATE_DOWN, &priv->state)) + hns3_nic_net_stop(netdev); + if (!test_and_clear_bit(HNS3_NIC_STATE_INITED, &priv->state)) { netdev_warn(netdev, "already uninitialized\n"); return 0; -- cgit From 86db7bfb06704ef17340eeae71c832f21cfce35c Mon Sep 17 00:00:00 2001 From: Peiyang Wang Date: Tue, 13 Aug 2024 22:10:23 +0800 Subject: net: hns3: void array out of bound when loop tnl_num When query reg inf of SSU, it loops tnl_num times. However, tnl_num comes from hardware and the length of array is a fixed value. To void array out of bound, make sure the loop time is not greater than the length of array Signed-off-by: Peiyang Wang Signed-off-by: Jijie Shao Signed-off-by: Paolo Abeni --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.c index e132c2f09560..cc7f46c0b35f 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.c @@ -1598,8 +1598,7 @@ static void hclge_query_reg_info_of_ssu(struct hclge_dev *hdev) { u32 loop_para[HCLGE_MOD_MSG_PARA_ARRAY_MAX_SIZE] = {0}; struct hclge_mod_reg_common_msg msg; - u8 i, j, num; - u32 loop_time; + u8 i, j, num, loop_time; num = ARRAY_SIZE(hclge_ssu_reg_common_msg); for (i = 0; i < num; i++) { @@ -1609,7 +1608,8 @@ static void hclge_query_reg_info_of_ssu(struct hclge_dev *hdev) loop_time = 1; loop_para[0] = 0; if (msg.need_para) { - loop_time = hdev->ae_dev->dev_specs.tnl_num; + loop_time = min(hdev->ae_dev->dev_specs.tnl_num, + HCLGE_MOD_MSG_PARA_ARRAY_MAX_SIZE); for (j = 0; j < loop_time; j++) loop_para[j] = j + 1; } -- cgit From 7660833d217528c8f2385528951ab820a031e4e3 Mon Sep 17 00:00:00 2001 From: Peiyang Wang Date: Tue, 13 Aug 2024 22:10:24 +0800 Subject: net: hns3: use correct release function during uninitialization pci_request_regions is called to apply for PCI I/O and memory resources when the driver is initialized, Therefore, when the driver is uninstalled, pci_release_regions should be used to release PCI I/O and memory resources instead of pci_release_mem_regions is used to release memory reasouces only. Signed-off-by: Peiyang Wang Signed-off-by: Jijie Shao Signed-off-by: Paolo Abeni --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index 465f0d582283..6c33195a1168 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -11456,7 +11456,7 @@ static void hclge_pci_uninit(struct hclge_dev *hdev) pcim_iounmap(pdev, hdev->hw.hw.io_base); pci_free_irq_vectors(pdev); - pci_release_mem_regions(pdev); + pci_release_regions(pdev); pci_disable_device(pdev); } -- cgit