From 151ac45348afc5b56baa584c7cd4876addf461ff Mon Sep 17 00:00:00 2001 From: Aakash Menon Date: Mon, 16 Sep 2024 22:18:29 -0700 Subject: net: sparx5: Fix invalid timestamps Bit 270-271 are occasionally unexpectedly set by the hardware. This issue was observed with 10G SFPs causing huge time errors (> 30ms) in PTP. Only 30 bits are needed for the nanosecond part of the timestamp, clear 2 most significant bits before extracting timestamp from the internal frame header. Fixes: 70dfe25cd866 ("net: sparx5: Update extraction/injection for timestamping") Signed-off-by: Aakash Menon Reviewed-by: Horatiu Vultur Signed-off-by: David S. Miller --- drivers/net/ethernet/microchip/sparx5/sparx5_packet.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_packet.c b/drivers/net/ethernet/microchip/sparx5/sparx5_packet.c index f3f5fb420468..70427643f777 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_packet.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_packet.c @@ -45,8 +45,12 @@ void sparx5_ifh_parse(u32 *ifh, struct frame_info *info) fwd = (fwd >> 5); info->src_port = FIELD_GET(GENMASK(7, 1), fwd); + /* + * Bit 270-271 are occasionally unexpectedly set by the hardware, + * clear bits before extracting timestamp + */ info->timestamp = - ((u64)xtr_hdr[2] << 24) | + ((u64)(xtr_hdr[2] & GENMASK(5, 0)) << 24) | ((u64)xtr_hdr[3] << 16) | ((u64)xtr_hdr[4] << 8) | ((u64)xtr_hdr[5] << 0); -- cgit v1.2.3 From 2bcae12c795f32ddfbf8c80d1b5f1d3286341c32 Mon Sep 17 00:00:00 2001 From: Gerd Bayer Date: Tue, 10 Sep 2024 10:53:51 +0200 Subject: net/mlx5: Fix error path in multi-packet WQE transmit Remove the erroneous unmap in case no DMA mapping was established The multi-packet WQE transmit code attempts to obtain a DMA mapping for the skb. This could fail, e.g. under memory pressure, when the IOMMU driver just can't allocate more memory for page tables. While the code tries to handle this in the path below the err_unmap label it erroneously unmaps one entry from the sq's FIFO list of active mappings. Since the current map attempt failed this unmap is removing some random DMA mapping that might still be required. If the PCI function now presents that IOVA, the IOMMU may assumes a rogue DMA access and e.g. on s390 puts the PCI function in error state. The erroneous behavior was seen in a stress-test environment that created memory pressure. Fixes: 5af75c747e2a ("net/mlx5e: Enhanced TX MPWQE for SKBs") Signed-off-by: Gerd Bayer Reviewed-by: Zhu Yanjun Acked-by: Maxim Mikityanskiy Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c index b09e9abd39f3..f8c7912abe0e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c @@ -642,7 +642,6 @@ mlx5e_sq_xmit_mpwqe(struct mlx5e_txqsq *sq, struct sk_buff *skb, return; err_unmap: - mlx5e_dma_unmap_wqe_err(sq, 1); sq->stats->dropped++; dev_kfree_skb_any(skb); mlx5e_tx_flush(sq); -- cgit v1.2.3 From ec793155894140df7421d25903de2e6bc12c695b Mon Sep 17 00:00:00 2001 From: Mohamed Khalfella Date: Wed, 4 Sep 2024 22:02:48 -0600 Subject: net/mlx5: Added cond_resched() to crdump collection Collecting crdump involves reading vsc registers from pci config space of mlx device, which can take long time to complete. This might result in starving other threads waiting to run on the cpu. Numbers I got from testing ConnectX-5 Ex MCX516A-CDAT in the lab: - mlx5_vsc_gw_read_block_fast() was called with length = 1310716. - mlx5_vsc_gw_read_fast() reads 4 bytes at a time. It was not used to read the entire 1310716 bytes. It was called 53813 times because there are jumps in read_addr. - On average mlx5_vsc_gw_read_fast() took 35284.4ns. - In total mlx5_vsc_wait_on_flag() called vsc_read() 54707 times. The average time for each call was 17548.3ns. In some instances vsc_read() was called more than one time when the flag was not set. As expected the thread released the cpu after 16 iterations in mlx5_vsc_wait_on_flag(). - Total time to read crdump was 35284.4ns * 53813 ~= 1.898s. It was seen in the field that crdump can take more than 5 seconds to complete. During that time mlx5_vsc_wait_on_flag() did not release the cpu because it did not complete 16 iterations. It is believed that pci config reads were slow. Adding cond_resched() every 128 register read improves the situation. In the common case the, crdump takes ~1.8989s, the thread yields the cpu every ~4.51ms. If crdump takes ~5s, the thread yields the cpu every ~18.0ms. Fixes: 8b9d8baae1de ("net/mlx5: Add Crdump support") Reviewed-by: Yuanyuan Zhong Signed-off-by: Mohamed Khalfella Reviewed-by: Moshe Shemesh Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/lib/pci_vsc.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/pci_vsc.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/pci_vsc.c index d0b595ba6110..432c98f2626d 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/pci_vsc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/pci_vsc.c @@ -24,6 +24,11 @@ pci_write_config_dword((dev)->pdev, (dev)->vsc_addr + (offset), (val)) #define VSC_MAX_RETRIES 2048 +/* Reading VSC registers can take relatively long time. + * Yield the cpu every 128 registers read. + */ +#define VSC_GW_READ_BLOCK_COUNT 128 + enum { VSC_CTRL_OFFSET = 0x4, VSC_COUNTER_OFFSET = 0x8, @@ -273,6 +278,7 @@ int mlx5_vsc_gw_read_block_fast(struct mlx5_core_dev *dev, u32 *data, { unsigned int next_read_addr = 0; unsigned int read_addr = 0; + unsigned int count = 0; while (read_addr < length) { if (mlx5_vsc_gw_read_fast(dev, read_addr, &next_read_addr, @@ -280,6 +286,10 @@ int mlx5_vsc_gw_read_block_fast(struct mlx5_core_dev *dev, u32 *data, return read_addr; read_addr = next_read_addr; + if (++count == VSC_GW_READ_BLOCK_COUNT) { + cond_resched(); + count = 0; + } } return length; } -- cgit v1.2.3 From f25389e779500cf4a59ef9804534237841bce536 Mon Sep 17 00:00:00 2001 From: Elena Salomatkina Date: Tue, 24 Sep 2024 19:00:18 +0300 Subject: net/mlx5e: Fix NULL deref in mlx5e_tir_builder_alloc() In mlx5e_tir_builder_alloc() kvzalloc() may return NULL which is dereferenced on the next line in a reference to the modify field. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: a6696735d694 ("net/mlx5e: Convert TIR to a dedicated object") Signed-off-by: Elena Salomatkina Reviewed-by: Simon Horman Reviewed-by: Kalesh AP Reviewed-by: Tariq Toukan Reviewed-by: Gal Pressman Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/en/tir.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tir.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tir.c index d4239e3b3c88..11f724ad90db 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/tir.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tir.c @@ -23,6 +23,9 @@ struct mlx5e_tir_builder *mlx5e_tir_builder_alloc(bool modify) struct mlx5e_tir_builder *builder; builder = kvzalloc(sizeof(*builder), GFP_KERNEL); + if (!builder) + return NULL; + builder->modify = modify; return builder; -- cgit v1.2.3 From d8c561741ef83980114b3f7f95ffac54600f3f16 Mon Sep 17 00:00:00 2001 From: Yevgeny Kliteynik Date: Thu, 19 Sep 2024 12:17:59 +0300 Subject: net/mlx5: HWS, fixed double-free in error flow of creating SQ When SQ creation fails, call the appropriate mlx5_core destroy function. This fixes the following smatch warnings: divers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_send.c:739 hws_send_ring_open_sq() warn: 'sq->dep_wqe' double freed hws_send_ring_open_sq() warn: 'sq->wq_ctrl.buf.frags' double freed hws_send_ring_open_sq() warn: 'sq->wr_priv' double freed Fixes: 2ca62599aa0b ("net/mlx5: HWS, added send engine and context handling") Reported-by: Dan Carpenter Closes: https://lore.kernel.org/all/e4ebc227-4b25-49bf-9e4c-14b7ea5c6a07@stanley.mountain/ Signed-off-by: Yevgeny Kliteynik Signed-off-by: Saeed Mahameed --- .../net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_send.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_send.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_send.c index a1adbb48735c..0c7989184c30 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_send.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_send.c @@ -653,6 +653,12 @@ static int hws_send_ring_create_sq(struct mlx5_core_dev *mdev, u32 pdn, return err; } +static void hws_send_ring_destroy_sq(struct mlx5_core_dev *mdev, + struct mlx5hws_send_ring_sq *sq) +{ + mlx5_core_destroy_sq(mdev, sq->sqn); +} + static int hws_send_ring_set_sq_rdy(struct mlx5_core_dev *mdev, u32 sqn) { void *in, *sqc; @@ -696,7 +702,7 @@ static int hws_send_ring_create_sq_rdy(struct mlx5_core_dev *mdev, u32 pdn, err = hws_send_ring_set_sq_rdy(mdev, sq->sqn); if (err) - hws_send_ring_close_sq(sq); + hws_send_ring_destroy_sq(mdev, sq); return err; } -- cgit v1.2.3 From d15525f300109fac5477dce1b8fef244c5dc9ec3 Mon Sep 17 00:00:00 2001 From: Yevgeny Kliteynik Date: Mon, 16 Sep 2024 14:13:39 +0300 Subject: net/mlx5: HWS, changed E2BIG error to a negative return code Fixed all the 'E2BIG' returns in error flow of functions to the negative '-E2BIG' as we are using negative error codes everywhere in HWS code. This also fixes the following smatch warnings: "warn: was negative '-E2BIG' intended?" Fixes: 74a778b4a63f ("net/mlx5: HWS, added definers handling") Reported-by: Dan Carpenter Closes: https://lore.kernel.org/all/f8c77688-7d83-4937-baba-ac844dfe2e0b@stanley.mountain/ Signed-off-by: Yevgeny Kliteynik Signed-off-by: Saeed Mahameed --- .../ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_bwc_complex.c | 2 +- .../net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_definer.c | 4 ++-- .../net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_bwc_complex.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_bwc_complex.c index bb563f50ef09..601fad5fc54a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_bwc_complex.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_bwc_complex.c @@ -33,7 +33,7 @@ bool mlx5hws_bwc_match_params_is_complex(struct mlx5hws_context *ctx, * and let the usual match creation path handle it, * both for good and bad flows. */ - if (ret == E2BIG) { + if (ret == -E2BIG) { is_complex = true; mlx5hws_dbg(ctx, "Matcher definer layout: need complex matcher\n"); } else { diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_definer.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_definer.c index 3bdb5c90efff..d566d2ddf424 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_definer.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_definer.c @@ -1845,7 +1845,7 @@ hws_definer_find_best_match_fit(struct mlx5hws_context *ctx, return 0; } - return E2BIG; + return -E2BIG; } static void @@ -1931,7 +1931,7 @@ mlx5hws_definer_calc_layout(struct mlx5hws_context *ctx, /* Find the match definer layout for header layout match union */ ret = hws_definer_find_best_match_fit(ctx, match_definer, match_hl); if (ret) { - if (ret == E2BIG) + if (ret == -E2BIG) mlx5hws_dbg(ctx, "Failed to create match definer from header layout - E2BIG\n"); else diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.c index 33d2b31e4b46..61a1155d4b4f 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_matcher.c @@ -675,7 +675,7 @@ static int hws_matcher_bind_mt(struct mlx5hws_matcher *matcher) if (!(matcher->flags & MLX5HWS_MATCHER_FLAGS_COLLISION)) { ret = mlx5hws_definer_mt_init(ctx, matcher->mt); if (ret) { - if (ret == E2BIG) + if (ret == -E2BIG) mlx5hws_err(ctx, "Failed to set matcher templates with match definers\n"); return ret; } -- cgit v1.2.3 From 023d2a43ed0d9ab73d4a35757121e4c8e01298e5 Mon Sep 17 00:00:00 2001 From: Dragos Tatulea Date: Tue, 13 Aug 2024 13:34:54 +0300 Subject: net/mlx5e: SHAMPO, Fix overflow of hd_per_wq When having larger RQ sizes and small MTUs sizes, the hd_per_wq variable can overflow. Like in the following case: $> ethtool --set-ring eth1 rx 8192 $> ip link set dev eth1 mtu 144 $> ethtool --features eth1 rx-gro-hw on ... yields in dmesg: mlx5_core 0000:08:00.1: mlx5_cmd_out_err:808:(pid 194797): CREATE_MKEY(0x200) op_mod(0x0) failed, status bad parameter(0x3), syndrome (0x3bf6f), err(-22) because hd_per_wq is 64K which overflows to 0 and makes the command fail. This patch increases the variable size to 32 bit. Fixes: 99be56171fa9 ("net/mlx5e: SHAMPO, Re-enable HW-GRO") Signed-off-by: Dragos Tatulea Reviewed-by: Tariq Toukan Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/en.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index da0a1c65ec4a..57b7298a0e79 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -627,7 +627,7 @@ struct mlx5e_shampo_hd { struct mlx5e_dma_info *info; struct mlx5e_frag_page *pages; u16 curr_page_index; - u16 hd_per_wq; + u32 hd_per_wq; u16 hd_per_wqe; unsigned long *bitmap; u16 pi; -- cgit v1.2.3 From 7b124695db40d5c9c5295a94ae928a8d67a01c3d Mon Sep 17 00:00:00 2001 From: Jianbo Liu Date: Mon, 2 Sep 2024 09:40:58 +0300 Subject: net/mlx5e: Fix crash caused by calling __xfrm_state_delete() twice The km.state is not checked in driver's delayed work. When xfrm_state_check_expire() is called, the state can be reset to XFRM_STATE_EXPIRED, even if it is XFRM_STATE_DEAD already. This happens when xfrm state is deleted, but not freed yet. As __xfrm_state_delete() is called again in xfrm timer, the following crash occurs. To fix this issue, skip xfrm_state_check_expire() if km.state is not XFRM_STATE_VALID. Oops: general protection fault, probably for non-canonical address 0xdead000000000108: 0000 [#1] SMP CPU: 5 UID: 0 PID: 7448 Comm: kworker/u102:2 Not tainted 6.11.0-rc2+ #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 Workqueue: mlx5e_ipsec: eth%d mlx5e_ipsec_handle_sw_limits [mlx5_core] RIP: 0010:__xfrm_state_delete+0x3d/0x1b0 Code: 0f 84 8b 01 00 00 48 89 fd c6 87 c8 00 00 00 05 48 8d bb 40 10 00 00 e8 11 04 1a 00 48 8b 95 b8 00 00 00 48 8b 85 c0 00 00 00 <48> 89 42 08 48 89 10 48 8b 55 10 48 b8 00 01 00 00 00 00 ad de 48 RSP: 0018:ffff88885f945ec8 EFLAGS: 00010246 RAX: dead000000000122 RBX: ffffffff82afa940 RCX: 0000000000000036 RDX: dead000000000100 RSI: 0000000000000000 RDI: ffffffff82afb980 RBP: ffff888109a20340 R08: ffff88885f945ea0 R09: 0000000000000000 R10: 0000000000000000 R11: ffff88885f945ff8 R12: 0000000000000246 R13: ffff888109a20340 R14: ffff88885f95f420 R15: ffff88885f95f400 FS: 0000000000000000(0000) GS:ffff88885f940000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2163102430 CR3: 00000001128d6001 CR4: 0000000000370eb0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ? die_addr+0x33/0x90 ? exc_general_protection+0x1a2/0x390 ? asm_exc_general_protection+0x22/0x30 ? __xfrm_state_delete+0x3d/0x1b0 ? __xfrm_state_delete+0x2f/0x1b0 xfrm_timer_handler+0x174/0x350 ? __xfrm_state_delete+0x1b0/0x1b0 __hrtimer_run_queues+0x121/0x270 hrtimer_run_softirq+0x88/0xd0 handle_softirqs+0xcc/0x270 do_softirq+0x3c/0x50 __local_bh_enable_ip+0x47/0x50 mlx5e_ipsec_handle_sw_limits+0x7d/0x90 [mlx5_core] process_one_work+0x137/0x2d0 worker_thread+0x28d/0x3a0 ? rescuer_thread+0x480/0x480 kthread+0xb8/0xe0 ? kthread_park+0x80/0x80 ret_from_fork+0x2d/0x50 ? kthread_park+0x80/0x80 ret_from_fork_asm+0x11/0x20 Fixes: b2f7b01d36a9 ("net/mlx5e: Simulate missing IPsec TX limits hardware functionality") Signed-off-by: Jianbo Liu Reviewed-by: Leon Romanovsky Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c index 3d274599015b..ca92e518be76 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c @@ -67,7 +67,6 @@ static void mlx5e_ipsec_handle_sw_limits(struct work_struct *_work) return; spin_lock_bh(&x->lock); - xfrm_state_check_expire(x); if (x->km.state == XFRM_STATE_EXPIRED) { sa_entry->attrs.drop = true; spin_unlock_bh(&x->lock); @@ -75,6 +74,13 @@ static void mlx5e_ipsec_handle_sw_limits(struct work_struct *_work) mlx5e_accel_ipsec_fs_modify(sa_entry); return; } + + if (x->km.state != XFRM_STATE_VALID) { + spin_unlock_bh(&x->lock); + return; + } + + xfrm_state_check_expire(x); spin_unlock_bh(&x->lock); queue_delayed_work(sa_entry->ipsec->wq, &dwork->dwork, -- cgit v1.2.3 From 45c0de18ff2dc9af01236380404bbd6a46502c69 Mon Sep 17 00:00:00 2001 From: Aleksander Jan Bajkowski Date: Mon, 23 Sep 2024 23:49:49 +0200 Subject: net: ethernet: lantiq_etop: fix memory disclosure When applying padding, the buffer is not zeroed, which results in memory disclosure. The mentioned data is observed on the wire. This patch uses skb_put_padto() to pad Ethernet frames properly. The mentioned function zeroes the expanded buffer. In case the packet cannot be padded it is silently dropped. Statistics are also not incremented. This driver does not support statistics in the old 32-bit format or the new 64-bit format. These will be added in the future. In its current form, the patch should be easily backported to stable versions. Ethernet MACs on Amazon-SE and Danube cannot do padding of the packets in hardware, so software padding must be applied. Fixes: 504d4721ee8e ("MIPS: Lantiq: Add ethernet driver") Signed-off-by: Aleksander Jan Bajkowski Reviewed-by: Jacob Keller Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20240923214949.231511-2-olek2@wp.pl Signed-off-by: Paolo Abeni --- drivers/net/ethernet/lantiq_etop.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/lantiq_etop.c b/drivers/net/ethernet/lantiq_etop.c index 3c289bfe0a09..7179271f63b6 100644 --- a/drivers/net/ethernet/lantiq_etop.c +++ b/drivers/net/ethernet/lantiq_etop.c @@ -481,7 +481,9 @@ ltq_etop_tx(struct sk_buff *skb, struct net_device *dev) unsigned long flags; u32 byte_offset; - len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len; + if (skb_put_padto(skb, ETH_ZLEN)) + return NETDEV_TX_OK; + len = skb->len; if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) || ch->skb[ch->dma.desc]) { netdev_err(dev, "tx ring full\n"); -- cgit v1.2.3 From a1477dc87dc4996dcf65a4893d4e2c3a6b593002 Mon Sep 17 00:00:00 2001 From: "Csókás, Bence" Date: Tue, 24 Sep 2024 11:37:04 +0200 Subject: net: fec: Restart PPS after link state change MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On link state change, the controller gets reset, causing PPS to drop out. Re-enable PPS if it was enabled before the controller reset. Fixes: 6605b730c061 ("FEC: Add time stamping code and a PTP hardware clock") Signed-off-by: Csókás, Bence Link: https://patch.msgid.link/20240924093705.2897329-1-csokas.bence@prolan.hu Signed-off-by: Paolo Abeni --- drivers/net/ethernet/freescale/fec.h | 6 ++++++ drivers/net/ethernet/freescale/fec_main.c | 11 ++++++++++- drivers/net/ethernet/freescale/fec_ptp.c | 30 ++++++++++++++++++++++++++++++ 3 files changed, 46 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h index a19cb2a786fd..0552317a2554 100644 --- a/drivers/net/ethernet/freescale/fec.h +++ b/drivers/net/ethernet/freescale/fec.h @@ -691,10 +691,16 @@ struct fec_enet_private { /* XDP BPF Program */ struct bpf_prog *xdp_prog; + struct { + int pps_enable; + } ptp_saved_state; + u64 ethtool_stats[]; }; void fec_ptp_init(struct platform_device *pdev, int irq_idx); +void fec_ptp_restore_state(struct fec_enet_private *fep); +void fec_ptp_save_state(struct fec_enet_private *fep); void fec_ptp_stop(struct platform_device *pdev); void fec_ptp_start_cyclecounter(struct net_device *ndev); int fec_ptp_set(struct net_device *ndev, struct kernel_hwtstamp_config *config, diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index acbb627d51bf..31ebf6a4f973 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -1077,6 +1077,8 @@ fec_restart(struct net_device *ndev) u32 rcntl = OPT_FRAME_SIZE | 0x04; u32 ecntl = FEC_ECR_ETHEREN; + fec_ptp_save_state(fep); + /* Whack a reset. We should wait for this. * For i.MX6SX SOC, enet use AXI bus, we use disable MAC * instead of reset MAC itself. @@ -1244,8 +1246,10 @@ fec_restart(struct net_device *ndev) writel(ecntl, fep->hwp + FEC_ECNTRL); fec_enet_active_rxring(ndev); - if (fep->bufdesc_ex) + if (fep->bufdesc_ex) { fec_ptp_start_cyclecounter(ndev); + fec_ptp_restore_state(fep); + } /* Enable interrupts we wish to service */ if (fep->link) @@ -1336,6 +1340,8 @@ fec_stop(struct net_device *ndev) netdev_err(ndev, "Graceful transmit stop did not complete!\n"); } + fec_ptp_save_state(fep); + /* Whack a reset. We should wait for this. * For i.MX6SX SOC, enet use AXI bus, we use disable MAC * instead of reset MAC itself. @@ -1366,6 +1372,9 @@ fec_stop(struct net_device *ndev) val = readl(fep->hwp + FEC_ECNTRL); val |= FEC_ECR_EN1588; writel(val, fep->hwp + FEC_ECNTRL); + + fec_ptp_start_cyclecounter(ndev); + fec_ptp_restore_state(fep); } } diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c index 4cffda363a14..df1ef023493b 100644 --- a/drivers/net/ethernet/freescale/fec_ptp.c +++ b/drivers/net/ethernet/freescale/fec_ptp.c @@ -764,6 +764,36 @@ void fec_ptp_init(struct platform_device *pdev, int irq_idx) schedule_delayed_work(&fep->time_keep, HZ); } +void fec_ptp_save_state(struct fec_enet_private *fep) +{ + unsigned long flags; + + spin_lock_irqsave(&fep->tmreg_lock, flags); + + fep->ptp_saved_state.pps_enable = fep->pps_enable; + + spin_unlock_irqrestore(&fep->tmreg_lock, flags); +} + +/* Restore PTP functionality after a reset */ +void fec_ptp_restore_state(struct fec_enet_private *fep) +{ + unsigned long flags; + + spin_lock_irqsave(&fep->tmreg_lock, flags); + + /* Reset turned it off, so adjust our status flag */ + fep->pps_enable = 0; + + spin_unlock_irqrestore(&fep->tmreg_lock, flags); + + /* Restart PPS if needed */ + if (fep->ptp_saved_state.pps_enable) { + /* Re-enable PPS */ + fec_ptp_enable_pps(fep, 1); + } +} + void fec_ptp_stop(struct platform_device *pdev) { struct net_device *ndev = platform_get_drvdata(pdev); -- cgit v1.2.3 From d9335d0232d2da605585eea1518ac6733518f938 Mon Sep 17 00:00:00 2001 From: "Csókás, Bence" Date: Tue, 24 Sep 2024 11:37:06 +0200 Subject: net: fec: Reload PTP registers after link-state change MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On link-state change, the controller gets reset, which clears all PTP registers, including PHC time, calibrated clock correction values etc. For correct IEEE 1588 operation we need to restore these after the reset. Fixes: 6605b730c061 ("FEC: Add time stamping code and a PTP hardware clock") Signed-off-by: Csókás, Bence Reviewed-by: Wei Fang Link: https://patch.msgid.link/20240924093705.2897329-2-csokas.bence@prolan.hu Signed-off-by: Paolo Abeni --- drivers/net/ethernet/freescale/fec.h | 3 +++ drivers/net/ethernet/freescale/fec_ptp.c | 20 ++++++++++++++++++++ 2 files changed, 23 insertions(+) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h index 0552317a2554..1cca0425d493 100644 --- a/drivers/net/ethernet/freescale/fec.h +++ b/drivers/net/ethernet/freescale/fec.h @@ -693,6 +693,9 @@ struct fec_enet_private { struct { int pps_enable; + u64 ns_sys, ns_phc; + u32 at_corr; + u8 at_inc_corr; } ptp_saved_state; u64 ethtool_stats[]; diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c index df1ef023493b..a4eb6edb850a 100644 --- a/drivers/net/ethernet/freescale/fec_ptp.c +++ b/drivers/net/ethernet/freescale/fec_ptp.c @@ -767,24 +767,44 @@ void fec_ptp_init(struct platform_device *pdev, int irq_idx) void fec_ptp_save_state(struct fec_enet_private *fep) { unsigned long flags; + u32 atime_inc_corr; spin_lock_irqsave(&fep->tmreg_lock, flags); fep->ptp_saved_state.pps_enable = fep->pps_enable; + fep->ptp_saved_state.ns_phc = timecounter_read(&fep->tc); + fep->ptp_saved_state.ns_sys = ktime_get_ns(); + + fep->ptp_saved_state.at_corr = readl(fep->hwp + FEC_ATIME_CORR); + atime_inc_corr = readl(fep->hwp + FEC_ATIME_INC) & FEC_T_INC_CORR_MASK; + fep->ptp_saved_state.at_inc_corr = (u8)(atime_inc_corr >> FEC_T_INC_CORR_OFFSET); + spin_unlock_irqrestore(&fep->tmreg_lock, flags); } /* Restore PTP functionality after a reset */ void fec_ptp_restore_state(struct fec_enet_private *fep) { + u32 atime_inc = readl(fep->hwp + FEC_ATIME_INC) & FEC_T_INC_MASK; unsigned long flags; + u32 counter; + u64 ns; spin_lock_irqsave(&fep->tmreg_lock, flags); /* Reset turned it off, so adjust our status flag */ fep->pps_enable = 0; + writel(fep->ptp_saved_state.at_corr, fep->hwp + FEC_ATIME_CORR); + atime_inc |= ((u32)fep->ptp_saved_state.at_inc_corr) << FEC_T_INC_CORR_OFFSET; + writel(atime_inc, fep->hwp + FEC_ATIME_INC); + + ns = ktime_get_ns() - fep->ptp_saved_state.ns_sys + fep->ptp_saved_state.ns_phc; + counter = ns & fep->cc.mask; + writel(counter, fep->hwp + FEC_ATIME); + timecounter_init(&fep->tc, &fep->cc, ns); + spin_unlock_irqrestore(&fep->tmreg_lock, flags); /* Restart PPS if needed */ -- cgit v1.2.3 From 1910bd470a0acea01b88722be61f0dfa29089730 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 24 Sep 2024 11:59:09 +0200 Subject: net: microchip: Make FDMA config symbol invisible There is no need to ask the user about enabling Microchip FDMA functionality, as all drivers that use it select the FDMA symbol. Hence make the symbol invisible, unless when compile-testing. Fixes: 30e48a75df9c6ead ("net: microchip: add FDMA library") Signed-off-by: Geert Uytterhoeven Reviewed-by: Daniel Machon Link: https://patch.msgid.link/8e2bcd8899c417a962b7ee3f75b29f35b25d7933.1727171879.git.geert+renesas@glider.be Signed-off-by: Paolo Abeni --- drivers/net/ethernet/microchip/fdma/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/microchip/fdma/Kconfig b/drivers/net/ethernet/microchip/fdma/Kconfig index 59159ad6701a..ec228c061351 100644 --- a/drivers/net/ethernet/microchip/fdma/Kconfig +++ b/drivers/net/ethernet/microchip/fdma/Kconfig @@ -6,7 +6,7 @@ if NET_VENDOR_MICROCHIP config FDMA - bool "FDMA API" + bool "FDMA API" if COMPILE_TEST help Provides the basic FDMA functionality for multiple Microchip switchcores. -- cgit v1.2.3 From e9d591b16c0ed8489aedc86cac237145815d14dc Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Tue, 24 Sep 2024 15:28:48 +0300 Subject: net: ethernet: ti: cpsw_ale: Fix warning on some platforms The number of register fields cannot be assumed to be ALE_FIELDS_MAX as some platforms can have lesser fields. Solve this by embedding the actual number of fields available in platform data and use that instead of ALE_FIELDS_MAX. Gets rid of the below warning on BeagleBone Black [ 1.007735] WARNING: CPU: 0 PID: 33 at drivers/base/regmap/regmap.c:1208 regmap_field_init+0x88/0x9c [ 1.007802] invalid empty mask defined [ 1.007812] Modules linked in: [ 1.007842] CPU: 0 UID: 0 PID: 33 Comm: kworker/u4:3 Not tainted 6.11.0-01459-g508403ab7b74-dirty #840 [ 1.007867] Hardware name: Generic AM33XX (Flattened Device Tree) [ 1.007890] Workqueue: events_unbound deferred_probe_work_func [ 1.007935] Call trace: [ 1.007957] unwind_backtrace from show_stack+0x10/0x14 [ 1.007999] show_stack from dump_stack_lvl+0x50/0x64 [ 1.008033] dump_stack_lvl from __warn+0x70/0x124 [ 1.008077] __warn from warn_slowpath_fmt+0x194/0x1a8 [ 1.008113] warn_slowpath_fmt from regmap_field_init+0x88/0x9c [ 1.008154] regmap_field_init from devm_regmap_field_alloc+0x48/0x64 [ 1.008193] devm_regmap_field_alloc from cpsw_ale_create+0xfc/0x320 [ 1.008251] cpsw_ale_create from cpsw_init_common+0x214/0x354 [ 1.008286] cpsw_init_common from cpsw_probe+0x4ac/0xb88 Reported-by: Geert Uytterhoeven Closes: https://lore.kernel.org/netdev/CAMuHMdUf-tKRDzkz2_m8qdFTFutefddU0NTratVrEjRTzA3yQQ@mail.gmail.com/ Fixes: 11cbcfeaa79e ("net: ethernet: ti: cpsw_ale: use regfields for number of Entries and Policers") Signed-off-by: Roger Quadros Tested-by: Geert Uytterhoeven Reviewed-by: Simon Horman Link: https://patch.msgid.link/20240924-am65-cpsw-multi-rx-fix-v1-1-0ca3fa9a1398@kernel.org Signed-off-by: Paolo Abeni --- drivers/net/ethernet/ti/cpsw_ale.c | 12 +++++++++++- drivers/net/ethernet/ti/cpsw_ale.h | 1 + 2 files changed, 12 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/cpsw_ale.c index 0d5d8917c70b..8d02d2b21429 100644 --- a/drivers/net/ethernet/ti/cpsw_ale.c +++ b/drivers/net/ethernet/ti/cpsw_ale.c @@ -96,6 +96,7 @@ enum { * @features: features supported by ALE * @tbl_entries: number of ALE entries * @reg_fields: pointer to array of register field configuration + * @num_fields: number of fields in the reg_fields array * @nu_switch_ale: NU Switch ALE * @vlan_entry_tbl: ALE vlan entry fields description tbl */ @@ -104,6 +105,7 @@ struct cpsw_ale_dev_id { u32 features; u32 tbl_entries; const struct reg_field *reg_fields; + int num_fields; bool nu_switch_ale; const struct ale_entry_fld *vlan_entry_tbl; }; @@ -1400,6 +1402,7 @@ static const struct cpsw_ale_dev_id cpsw_ale_id_match[] = { .dev_id = "cpsw", .tbl_entries = 1024, .reg_fields = ale_fields_cpsw, + .num_fields = ARRAY_SIZE(ale_fields_cpsw), .vlan_entry_tbl = vlan_entry_cpsw, }, { @@ -1407,12 +1410,14 @@ static const struct cpsw_ale_dev_id cpsw_ale_id_match[] = { .dev_id = "66ak2h-xgbe", .tbl_entries = 2048, .reg_fields = ale_fields_cpsw, + .num_fields = ARRAY_SIZE(ale_fields_cpsw), .vlan_entry_tbl = vlan_entry_cpsw, }, { .dev_id = "66ak2el", .features = CPSW_ALE_F_STATUS_REG, .reg_fields = ale_fields_cpsw_nu, + .num_fields = ARRAY_SIZE(ale_fields_cpsw_nu), .nu_switch_ale = true, .vlan_entry_tbl = vlan_entry_nu, }, @@ -1421,6 +1426,7 @@ static const struct cpsw_ale_dev_id cpsw_ale_id_match[] = { .features = CPSW_ALE_F_STATUS_REG, .tbl_entries = 64, .reg_fields = ale_fields_cpsw_nu, + .num_fields = ARRAY_SIZE(ale_fields_cpsw_nu), .nu_switch_ale = true, .vlan_entry_tbl = vlan_entry_nu, }, @@ -1429,6 +1435,7 @@ static const struct cpsw_ale_dev_id cpsw_ale_id_match[] = { .features = CPSW_ALE_F_STATUS_REG | CPSW_ALE_F_HW_AUTOAGING, .tbl_entries = 64, .reg_fields = ale_fields_cpsw_nu, + .num_fields = ARRAY_SIZE(ale_fields_cpsw_nu), .nu_switch_ale = true, .vlan_entry_tbl = vlan_entry_nu, }, @@ -1436,12 +1443,14 @@ static const struct cpsw_ale_dev_id cpsw_ale_id_match[] = { .dev_id = "j721e-cpswxg", .features = CPSW_ALE_F_STATUS_REG | CPSW_ALE_F_HW_AUTOAGING, .reg_fields = ale_fields_cpsw_nu, + .num_fields = ARRAY_SIZE(ale_fields_cpsw_nu), .vlan_entry_tbl = vlan_entry_k3_cpswxg, }, { .dev_id = "am64-cpswxg", .features = CPSW_ALE_F_STATUS_REG | CPSW_ALE_F_HW_AUTOAGING, .reg_fields = ale_fields_cpsw_nu, + .num_fields = ARRAY_SIZE(ale_fields_cpsw_nu), .vlan_entry_tbl = vlan_entry_k3_cpswxg, .tbl_entries = 512, }, @@ -1477,7 +1486,7 @@ static int cpsw_ale_regfield_init(struct cpsw_ale *ale) struct regmap *regmap = ale->regmap; int i; - for (i = 0; i < ALE_FIELDS_MAX; i++) { + for (i = 0; i < ale->params.num_fields; i++) { ale->fields[i] = devm_regmap_field_alloc(dev, regmap, reg_fields[i]); if (IS_ERR(ale->fields[i])) { @@ -1503,6 +1512,7 @@ struct cpsw_ale *cpsw_ale_create(struct cpsw_ale_params *params) params->ale_entries = ale_dev_id->tbl_entries; params->nu_switch_ale = ale_dev_id->nu_switch_ale; params->reg_fields = ale_dev_id->reg_fields; + params->num_fields = ale_dev_id->num_fields; ale = devm_kzalloc(params->dev, sizeof(*ale), GFP_KERNEL); if (!ale) diff --git a/drivers/net/ethernet/ti/cpsw_ale.h b/drivers/net/ethernet/ti/cpsw_ale.h index 1e4e9a3dd234..87b7d1b3a34a 100644 --- a/drivers/net/ethernet/ti/cpsw_ale.h +++ b/drivers/net/ethernet/ti/cpsw_ale.h @@ -24,6 +24,7 @@ struct cpsw_ale_params { */ bool nu_switch_ale; const struct reg_field *reg_fields; + int num_fields; const char *dev_id; unsigned long bus_freq; }; -- cgit v1.2.3 From 4c1b56671b68ffcbe6b78308bfdda6bcce6491ae Mon Sep 17 00:00:00 2001 From: Shenwei Wang Date: Tue, 24 Sep 2024 15:54:24 -0500 Subject: net: stmmac: dwmac4: extend timeout for VLAN Tag register busy bit check MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Increase the timeout for checking the busy bit of the VLAN Tag register from 10µs to 500ms. This change is necessary to accommodate scenarios where Energy Efficient Ethernet (EEE) is enabled. Overnight testing revealed that when EEE is active, the busy bit can remain set for up to approximately 300ms. The new 500ms timeout provides a safety margin. Fixes: ed64639bc1e0 ("net: stmmac: Add support for VLAN Rx filtering") Reviewed-by: Andrew Lunn Signed-off-by: Shenwei Wang Link: https://patch.msgid.link/20240924205424.573913-1-shenwei.wang@nxp.com Signed-off-by: Paolo Abeni --- drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c index a1858f083eef..e65a65666cc1 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c @@ -14,6 +14,7 @@ #include #include #include +#include #include "stmmac.h" #include "stmmac_pcs.h" #include "dwmac4.h" @@ -471,7 +472,7 @@ static int dwmac4_write_vlan_filter(struct net_device *dev, u8 index, u32 data) { void __iomem *ioaddr = (void __iomem *)dev->base_addr; - int i, timeout = 10; + int ret; u32 val; if (index >= hw->num_vlan) @@ -487,16 +488,15 @@ static int dwmac4_write_vlan_filter(struct net_device *dev, writel(val, ioaddr + GMAC_VLAN_TAG); - for (i = 0; i < timeout; i++) { - val = readl(ioaddr + GMAC_VLAN_TAG); - if (!(val & GMAC_VLAN_TAG_CTRL_OB)) - return 0; - udelay(1); + ret = readl_poll_timeout(ioaddr + GMAC_VLAN_TAG, val, + !(val & GMAC_VLAN_TAG_CTRL_OB), + 1000, 500000); + if (ret) { + netdev_err(dev, "Timeout accessing MAC_VLAN_Tag_Filter\n"); + return -EBUSY; } - netdev_err(dev, "Timeout accessing MAC_VLAN_Tag_Filter\n"); - - return -EBUSY; + return 0; } static int dwmac4_add_hw_vlan_rx_fltr(struct net_device *dev, -- cgit v1.2.3 From 3c97fe4f9fbc2bbc555b51268a9556e61cd3ca4e Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sat, 28 Sep 2024 13:04:01 +0300 Subject: net: ethernet: ti: am65-cpsw: Fix forever loop in cleanup code This error handling has a typo. It should i++ instead of i--. In the original code the error handling will loop until it crashes. Fixes: da70d184a8c3 ("net: ethernet: ti: am65-cpsw: Introduce multi queue Rx") Signed-off-by: Dan Carpenter Reviewed-by: Alexander Sverdlin Reviewed-by: Roger Quadros Link: https://patch.msgid.link/8e7960cc-415d-48d7-99ce-f623022ec7b5@stanley.mountain Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c index cbe99017cbfa..d253727b160f 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c @@ -763,7 +763,7 @@ fail_tx: k3_udma_glue_disable_rx_chn(rx_chn->rx_chn); fail_rx: - for (i = 0; i < common->rx_ch_num_flows; i--) + for (i = 0; i < common->rx_ch_num_flows; i++) k3_udma_glue_reset_rx_chn(rx_chn->rx_chn, i, &rx_chn->flows[i], am65_cpsw_nuss_rx_cleanup, 0); -- cgit v1.2.3