From 3d64ea387cc3ba884f9d2b5c41a8625d48deb933 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 26 Jun 2019 02:39:33 +0300 Subject: [PATCH 01/10] net: dsa: sja1105: Build PTP support in main DSA driver As Arnd Bergmann pointed out in commit 78fe8a28fb96 ("net: dsa: sja1105: fix ptp link error"), there is no point in having PTP support as a separate loadable kernel module. So remove the exported symbols and make sja1105.ko contain PTP support or not based on CONFIG_NET_DSA_SJA1105_PTP. Signed-off-by: Vladimir Oltean Acked-by: Willem de Bruijn Signed-off-by: David S. Miller --- drivers/net/dsa/sja1105/Makefile | 2 +- drivers/net/dsa/sja1105/sja1105_ptp.c | 12 ------------ drivers/net/dsa/sja1105/sja1105_spi.c | 2 -- drivers/net/dsa/sja1105/sja1105_static_config.c | 3 --- 4 files changed, 1 insertion(+), 18 deletions(-) diff --git a/drivers/net/dsa/sja1105/Makefile b/drivers/net/dsa/sja1105/Makefile index 9a22f68b39e99..4483113e62592 100644 --- a/drivers/net/dsa/sja1105/Makefile +++ b/drivers/net/dsa/sja1105/Makefile @@ -10,5 +10,5 @@ sja1105-objs := \ sja1105_dynamic_config.o \ ifdef CONFIG_NET_DSA_SJA1105_PTP -obj-$(CONFIG_NET_DSA_SJA1105) += sja1105_ptp.o +sja1105-objs += sja1105_ptp.o endif diff --git a/drivers/net/dsa/sja1105/sja1105_ptp.c b/drivers/net/dsa/sja1105/sja1105_ptp.c index 3041cf9d58565..c7ce1edd84711 100644 --- a/drivers/net/dsa/sja1105/sja1105_ptp.c +++ b/drivers/net/dsa/sja1105/sja1105_ptp.c @@ -77,7 +77,6 @@ int sja1105_get_ts_info(struct dsa_switch *ds, int port, info->phc_index = ptp_clock_index(priv->clock); return 0; } -EXPORT_SYMBOL_GPL(sja1105_get_ts_info); int sja1105et_ptp_cmd(const void *ctx, const void *data) { @@ -95,7 +94,6 @@ int sja1105et_ptp_cmd(const void *ctx, const void *data) return sja1105_spi_send_packed_buf(priv, SPI_WRITE, regs->ptp_control, buf, SJA1105_SIZE_PTP_CMD); } -EXPORT_SYMBOL_GPL(sja1105et_ptp_cmd); int sja1105pqrs_ptp_cmd(const void *ctx, const void *data) { @@ -113,7 +111,6 @@ int sja1105pqrs_ptp_cmd(const void *ctx, const void *data) return sja1105_spi_send_packed_buf(priv, SPI_WRITE, regs->ptp_control, buf, SJA1105_SIZE_PTP_CMD); } -EXPORT_SYMBOL_GPL(sja1105pqrs_ptp_cmd); /* The switch returns partial timestamps (24 bits for SJA1105 E/T, which wrap * around in 0.135 seconds, and 32 bits for P/Q/R/S, wrapping around in 34.35 @@ -146,7 +143,6 @@ u64 sja1105_tstamp_reconstruct(struct sja1105_private *priv, u64 now, return ts_reconstructed; } -EXPORT_SYMBOL_GPL(sja1105_tstamp_reconstruct); /* Reads the SPI interface for an egress timestamp generated by the switch * for frames sent using management routes. @@ -219,7 +215,6 @@ int sja1105_ptpegr_ts_poll(struct sja1105_private *priv, int port, u64 *ts) return 0; } -EXPORT_SYMBOL_GPL(sja1105_ptpegr_ts_poll); int sja1105_ptp_reset(struct sja1105_private *priv) { @@ -240,7 +235,6 @@ int sja1105_ptp_reset(struct sja1105_private *priv) return rc; } -EXPORT_SYMBOL_GPL(sja1105_ptp_reset); static int sja1105_ptp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) @@ -387,7 +381,6 @@ int sja1105_ptp_clock_register(struct sja1105_private *priv) return sja1105_ptp_reset(priv); } -EXPORT_SYMBOL_GPL(sja1105_ptp_clock_register); void sja1105_ptp_clock_unregister(struct sja1105_private *priv) { @@ -397,8 +390,3 @@ void sja1105_ptp_clock_unregister(struct sja1105_private *priv) ptp_clock_unregister(priv->clock); priv->clock = NULL; } -EXPORT_SYMBOL_GPL(sja1105_ptp_clock_unregister); - -MODULE_AUTHOR("Vladimir Oltean "); -MODULE_DESCRIPTION("SJA1105 PHC Driver"); -MODULE_LICENSE("GPL v2"); diff --git a/drivers/net/dsa/sja1105/sja1105_spi.c b/drivers/net/dsa/sja1105/sja1105_spi.c index f7e51debb9302..84dc603138cf3 100644 --- a/drivers/net/dsa/sja1105/sja1105_spi.c +++ b/drivers/net/dsa/sja1105/sja1105_spi.c @@ -100,7 +100,6 @@ int sja1105_spi_send_packed_buf(const struct sja1105_private *priv, return 0; } -EXPORT_SYMBOL_GPL(sja1105_spi_send_packed_buf); /* If @rw is: * - SPI_WRITE: creates and sends an SPI write message at absolute @@ -136,7 +135,6 @@ int sja1105_spi_send_int(const struct sja1105_private *priv, return rc; } -EXPORT_SYMBOL_GPL(sja1105_spi_send_int); /* Should be used if a @packed_buf larger than SJA1105_SIZE_SPI_MSG_MAXLEN * must be sent/received. Splitting the buffer into chunks and assembling diff --git a/drivers/net/dsa/sja1105/sja1105_static_config.c b/drivers/net/dsa/sja1105/sja1105_static_config.c index 58f273eaf1ea5..242f001c59fe8 100644 --- a/drivers/net/dsa/sja1105/sja1105_static_config.c +++ b/drivers/net/dsa/sja1105/sja1105_static_config.c @@ -35,7 +35,6 @@ void sja1105_pack(void *buf, const u64 *val, int start, int end, size_t len) } dump_stack(); } -EXPORT_SYMBOL_GPL(sja1105_pack); void sja1105_unpack(const void *buf, u64 *val, int start, int end, size_t len) { @@ -53,7 +52,6 @@ void sja1105_unpack(const void *buf, u64 *val, int start, int end, size_t len) start, end); dump_stack(); } -EXPORT_SYMBOL_GPL(sja1105_unpack); void sja1105_packing(void *buf, u64 *val, int start, int end, size_t len, enum packing_op op) @@ -76,7 +74,6 @@ void sja1105_packing(void *buf, u64 *val, int start, int end, } dump_stack(); } -EXPORT_SYMBOL_GPL(sja1105_packing); /* Little-endian Ethernet CRC32 of data packed as big-endian u32 words */ u32 sja1105_crc32(const void *buf, size_t len) From 29dd908d355f565bc2c1ab475f0322b29e9cf3eb Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 26 Jun 2019 02:39:34 +0300 Subject: [PATCH 02/10] net: dsa: sja1105: Cancel PTP delayed work on unregister Currently when the driver unloads and PTP is enabled, the delayed work that prevents the timecounter from expiring becomes a ticking time bomb. The kernel will schedule the work thread within 60 seconds of driver removal, but the work handler is no longer there, leading to this strange and inconclusive stack trace: [ 64.473112] Unable to handle kernel paging request at virtual address 79746970 [ 64.480340] pgd = 008c4af9 [ 64.483042] [79746970] *pgd=00000000 [ 64.486620] Internal error: Oops: 80000005 [#1] SMP ARM [ 64.491820] Modules linked in: [ 64.494871] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.2.0-rc5-01634-ge3a2773ba9e5 #1246 [ 64.503007] Hardware name: Freescale LS1021A [ 64.507259] PC is at 0x79746970 [ 64.510393] LR is at call_timer_fn+0x3c/0x18c [ 64.514729] pc : [<79746970>] lr : [] psr: 60010113 [ 64.520965] sp : c1901de0 ip : 00000000 fp : c1903080 [ 64.526163] r10: c1901e38 r9 : ffffe000 r8 : c19064ac [ 64.531363] r7 : 79746972 r6 : e98dd260 r5 : 00000100 r4 : c1a9e4a0 [ 64.537859] r3 : c1900000 r2 : ffffa400 r1 : 79746972 r0 : e98dd260 [ 64.544359] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none [ 64.551460] Control: 10c5387d Table: a8a2806a DAC: 00000051 [ 64.557176] Process swapper/0 (pid: 0, stack limit = 0x1ddb27f0) [ 64.563147] Stack: (0xc1901de0 to 0xc1902000) [ 64.567481] 1de0: eb6a4918 3d60d7c3 c1a9e554 e98dd260 eb6a34c0 c1a9e4a0 ffffa400 c19064ac [ 64.575616] 1e00: ffffe000 c03bd95c c1901e34 c1901e34 eb6a34c0 c1901e30 c1903d00 c186f4c0 [ 64.583751] 1e20: c1906488 29e34000 c1903080 c03bdca4 00000000 eaa6f218 00000000 eb6a45c0 [ 64.591886] 1e40: eb6a45c0 20010193 00000003 c03c0a68 20010193 3f7231be c1903084 00000002 [ 64.600022] 1e60: 00000082 00000001 ffffe000 c1a9e0a4 00000100 c0302298 02b64722 0000000f [ 64.608157] 1e80: c186b3c8 c1877540 c19064ac 0000000a c186b350 ffffa401 c1903d00 c1107348 [ 64.616292] 1ea0: 00200102 c0d87a14 ea823c00 ffffe000 00000012 00000000 00000000 ea810800 [ 64.624427] 1ec0: f0803000 c1876ba8 00000000 c034c784 c18774b8 c039fb50 c1906c90 c1978aac [ 64.632562] 1ee0: f080200c f0802000 c1901f10 c0709ca8 c03091a0 60010013 ffffffff c1901f44 [ 64.640697] 1f00: 00000000 c1900000 c1876ba8 c0301a8c 00000000 000070a0 eb6ac1a0 c031da60 [ 64.648832] 1f20: ffffe000 c19064ac c19064f0 00000001 00000000 c1906488 c1876ba8 00000000 [ 64.656967] 1f40: ffffffff c1901f60 c030919c c03091a0 60010013 ffffffff 00000051 00000000 [ 64.665102] 1f60: ffffe000 c0376aa4 c1a9da37 ffffffff 00000037 3f7231be c1ab20c0 000000cc [ 64.673238] 1f80: c1906488 c1906480 ffffffff 00000037 c1ab20c0 c1ab20c0 00000001 c0376e1c [ 64.681373] 1fa0: c1ab2118 c1700ea8 ffffffff ffffffff 00000000 c1700754 c17dfa40 ebfffd80 [ 64.689509] 1fc0: 00000000 c17dfa40 3f7733be 00000000 00000000 c1700330 00000051 10c0387d [ 64.697644] 1fe0: 00000000 8f000000 410fc075 10c5387d 00000000 00000000 00000000 00000000 [ 64.705788] [] (call_timer_fn) from [] (expire_timers+0xd8/0x144) [ 64.713579] [] (expire_timers) from [] (run_timer_softirq+0xe4/0x1dc) [ 64.721716] [] (run_timer_softirq) from [] (__do_softirq+0x130/0x3c8) [ 64.729854] [] (__do_softirq) from [] (irq_exit+0xbc/0xd8) [ 64.737040] [] (irq_exit) from [] (__handle_domain_irq+0x60/0xb4) [ 64.744833] [] (__handle_domain_irq) from [] (gic_handle_irq+0x58/0x9c) [ 64.753143] [] (gic_handle_irq) from [] (__irq_svc+0x6c/0x90) [ 64.760583] Exception stack(0xc1901f10 to 0xc1901f58) [ 64.765605] 1f00: 00000000 000070a0 eb6ac1a0 c031da60 [ 64.773740] 1f20: ffffe000 c19064ac c19064f0 00000001 00000000 c1906488 c1876ba8 00000000 [ 64.781873] 1f40: ffffffff c1901f60 c030919c c03091a0 60010013 ffffffff [ 64.788456] [] (__irq_svc) from [] (arch_cpu_idle+0x38/0x3c) [ 64.795816] [] (arch_cpu_idle) from [] (do_idle+0x1bc/0x298) [ 64.803175] [] (do_idle) from [] (cpu_startup_entry+0x18/0x1c) [ 64.810707] [] (cpu_startup_entry) from [] (start_kernel+0x480/0x4ac) [ 64.818839] Code: bad PC value [ 64.821890] ---[ end trace e226ed97b1c584cd ]--- [ 64.826482] Kernel panic - not syncing: Fatal exception in interrupt [ 64.832807] CPU1: stopping [ 64.835501] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G D 5.2.0-rc5-01634-ge3a2773ba9e5 #1246 [ 64.845013] Hardware name: Freescale LS1021A [ 64.849266] [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [ 64.856972] [] (show_stack) from [] (dump_stack+0xb4/0xc8) [ 64.864159] [] (dump_stack) from [] (handle_IPI+0x3bc/0x3dc) [ 64.871519] [] (handle_IPI) from [] (gic_handle_irq+0x98/0x9c) [ 64.879050] [] (gic_handle_irq) from [] (__irq_svc+0x6c/0x90) [ 64.886489] Exception stack(0xea8cbf60 to 0xea8cbfa8) [ 64.891514] bf60: 00000000 0000307c eb6c11a0 c031da60 ffffe000 c19064ac c19064f0 00000002 [ 64.899649] bf80: 00000000 c1906488 c1876ba8 00000000 00000000 ea8cbfb0 c030919c c03091a0 [ 64.907780] bfa0: 600d0013 ffffffff [ 64.911250] [] (__irq_svc) from [] (arch_cpu_idle+0x38/0x3c) [ 64.918609] [] (arch_cpu_idle) from [] (do_idle+0x1bc/0x298) [ 64.925967] [] (do_idle) from [] (cpu_startup_entry+0x18/0x1c) [ 64.933496] [] (cpu_startup_entry) from [<803025cc>] (0x803025cc) [ 64.940422] Rebooting in 3 seconds.. In this case, what happened is that the DSA driver failed to probe at boot time due to a PHY issue during phylink_connect_phy: [ 2.245607] fsl-gianfar soc:ethernet@2d90000 eth2: error -19 setting up slave phy [ 2.258051] sja1105 spi0.1: failed to create slave for port 0.0 Fixes: bb77f36ac21d ("net: dsa: sja1105: Add support for the PTP clock") Signed-off-by: Vladimir Oltean Acked-by: Willem de Bruijn Signed-off-by: David S. Miller --- drivers/net/dsa/sja1105/sja1105_ptp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/dsa/sja1105/sja1105_ptp.c b/drivers/net/dsa/sja1105/sja1105_ptp.c index c7ce1edd84711..d19cfdf681af4 100644 --- a/drivers/net/dsa/sja1105/sja1105_ptp.c +++ b/drivers/net/dsa/sja1105/sja1105_ptp.c @@ -387,6 +387,7 @@ void sja1105_ptp_clock_unregister(struct sja1105_private *priv) if (IS_ERR_OR_NULL(priv->clock)) return; + cancel_delayed_work_sync(&priv->refresh_work); ptp_clock_unregister(priv->clock); priv->clock = NULL; } From e3502b8297878130a9375f6fe1367dc317f79453 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 26 Jun 2019 02:39:35 +0300 Subject: [PATCH 03/10] net: dsa: sja1105: Make vid 1 the default pvid In SJA1105 there is no concept of 'default values' per se, everything needs to be driver-supplied through the static configuration tables. The issue is that the hardware manual says that 'at least the default untagging VLAN' is mandatory to be provided through the static config. But VLAN 0 isn't a very good initial pvid - its use is reserved for priority-tagged frames, and the layers of the stack that care about those already make sure that this VLAN is installed, as can be seen in the message below: 8021q: adding VLAN 0 to HW filter on device swp2 So change the pvid provided through the static configuration to 1, which matches the bridge core's defaults. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller --- drivers/net/dsa/sja1105/sja1105_main.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c index 9395e8f5f790e..bc9f37cd3876e 100644 --- a/drivers/net/dsa/sja1105/sja1105_main.c +++ b/drivers/net/dsa/sja1105/sja1105_main.c @@ -80,7 +80,7 @@ static int sja1105_init_mac_settings(struct sja1105_private *priv) .maxage = 0xFF, /* Internal VLAN (pvid) to apply to untagged ingress */ .vlanprio = 0, - .vlanid = 0, + .vlanid = 1, .ing_mirr = false, .egr_mirr = false, /* Don't drop traffic with other EtherType than ETH_P_IP */ @@ -264,20 +264,15 @@ static int sja1105_init_static_vlan(struct sja1105_private *priv) .vmemb_port = 0, .vlan_bc = 0, .tag_port = 0, - .vlanid = 0, + .vlanid = 1, }; int i; table = &priv->static_config.tables[BLK_IDX_VLAN_LOOKUP]; - /* The static VLAN table will only contain the initial pvid of 0. + /* The static VLAN table will only contain the initial pvid of 1. * All other VLANs are to be configured through dynamic entries, * and kept in the static configuration table as backing memory. - * The pvid of 0 is sufficient to pass traffic while the ports are - * standalone and when vlan_filtering is disabled. When filtering - * gets enabled, the switchdev core sets up the VLAN ID 1 and sets - * it as the new pvid. Actually 'pvid 1' still comes up in 'bridge - * vlan' even when vlan_filtering is off, but it has no effect. */ if (table->entry_count) { kfree(table->entries); @@ -291,7 +286,7 @@ static int sja1105_init_static_vlan(struct sja1105_private *priv) table->entry_count = 1; - /* VLAN ID 0: all DT-defined ports are members; no restrictions on + /* VLAN 1: all DT-defined ports are members; no restrictions on * forwarding; always transmit priority-tagged frames as untagged. */ for (i = 0; i < SJA1105_NUM_PORTS; i++) { From 0803948e23dac864374d981b06460b7350cca1b9 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 26 Jun 2019 02:39:36 +0300 Subject: [PATCH 04/10] net: dsa: sja1105: Actually implement the P/Q/R/S FDB bits In commit 1da73821343c ("net: dsa: sja1105: Add FDB operations for P/Q/R/S series"), these bits were set in the static config, but apparently they did not do anything. The reason is that the packing accessors for them were part of a patch I forgot to send. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller --- drivers/net/dsa/sja1105/sja1105_static_config.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/dsa/sja1105/sja1105_static_config.c b/drivers/net/dsa/sja1105/sja1105_static_config.c index 242f001c59fe8..a1e9656c881c2 100644 --- a/drivers/net/dsa/sja1105/sja1105_static_config.c +++ b/drivers/net/dsa/sja1105/sja1105_static_config.c @@ -232,9 +232,14 @@ sja1105pqrs_l2_lookup_params_entry_packing(void *buf, void *entry_ptr, struct sja1105_l2_lookup_params_entry *entry = entry_ptr; sja1105_packing(buf, &entry->maxage, 57, 43, size, op); + sja1105_packing(buf, &entry->start_dynspc, 42, 33, size, op); + sja1105_packing(buf, &entry->drpnolearn, 32, 28, size, op); sja1105_packing(buf, &entry->shared_learn, 27, 27, size, op); sja1105_packing(buf, &entry->no_enf_hostprt, 26, 26, size, op); sja1105_packing(buf, &entry->no_mgmt_learn, 25, 25, size, op); + sja1105_packing(buf, &entry->use_static, 24, 24, size, op); + sja1105_packing(buf, &entry->owr_dyn, 23, 23, size, op); + sja1105_packing(buf, &entry->learn_once, 22, 22, size, op); return size; } From 6c56e167cc1b60f69a265ead1ef7f413f0e2ed64 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 26 Jun 2019 02:39:37 +0300 Subject: [PATCH 05/10] net: dsa: sja1105: Make P/Q/R/S learn MAC addresses At the end of the commit 1da73821343c ("net: dsa: sja1105: Add FDB operations for P/Q/R/S series") message, I said that: At the moment only FDB entries installed statically through 'bridge fdb' are visible in the dump callback - the dynamically learned ones are still under investigation. It looks like the reason why they were not visible in 'bridge fdb' was that they were never learned - always flooded. SJA1105 P/Q/R/S manual says about the MAXADDRP[port] field: Specify the maximum number of MAC address dynamically learned from the respective port. It is used to limit the number of learned MAC addresses per port. It looks like not providing a value in the static config (aka providing zeroes) is enough for it to not store the learned addresses in the FDB. For now we divide the 1024 entry FDB "equally" amongst the 5 ports. This may be revisited if the situation calls for that - for now I'm happy that learning works. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller --- drivers/net/dsa/sja1105/sja1105_main.c | 3 +++ drivers/net/dsa/sja1105/sja1105_static_config.c | 4 ++++ drivers/net/dsa/sja1105/sja1105_static_config.h | 1 + 3 files changed, 8 insertions(+) diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c index bc9f37cd3876e..46a3c81825ecd 100644 --- a/drivers/net/dsa/sja1105/sja1105_main.c +++ b/drivers/net/dsa/sja1105/sja1105_main.c @@ -203,6 +203,7 @@ static int sja1105_init_static_fdb(struct sja1105_private *priv) static int sja1105_init_l2_lookup_params(struct sja1105_private *priv) { struct sja1105_table *table; + u64 max_fdb_entries = SJA1105_MAX_L2_LOOKUP_COUNT / SJA1105_NUM_PORTS; struct sja1105_l2_lookup_params_entry default_l2_lookup_params = { /* Learned FDB entries are forgotten after 300 seconds */ .maxage = SJA1105_AGEING_TIME_MS(300000), @@ -210,6 +211,8 @@ static int sja1105_init_l2_lookup_params(struct sja1105_private *priv) .dyn_tbsz = SJA1105ET_FDB_BIN_SIZE, /* And the P/Q/R/S equivalent setting: */ .start_dynspc = 0, + .maxaddrp = {max_fdb_entries, max_fdb_entries, max_fdb_entries, + max_fdb_entries, max_fdb_entries, }, /* 2^8 + 2^5 + 2^3 + 2^2 + 2^1 + 1 in Koopman notation */ .poly = 0x97, /* This selects between Independent VLAN Learning (IVL) and diff --git a/drivers/net/dsa/sja1105/sja1105_static_config.c b/drivers/net/dsa/sja1105/sja1105_static_config.c index a1e9656c881c2..b31c737dc5602 100644 --- a/drivers/net/dsa/sja1105/sja1105_static_config.c +++ b/drivers/net/dsa/sja1105/sja1105_static_config.c @@ -230,7 +230,11 @@ sja1105pqrs_l2_lookup_params_entry_packing(void *buf, void *entry_ptr, { const size_t size = SJA1105PQRS_SIZE_L2_LOOKUP_PARAMS_ENTRY; struct sja1105_l2_lookup_params_entry *entry = entry_ptr; + int offset, i; + for (i = 0, offset = 58; i < 5; i++, offset += 11) + sja1105_packing(buf, &entry->maxaddrp[i], + offset + 10, offset + 0, size, op); sja1105_packing(buf, &entry->maxage, 57, 43, size, op); sja1105_packing(buf, &entry->start_dynspc, 42, 33, size, op); sja1105_packing(buf, &entry->drpnolearn, 32, 28, size, op); diff --git a/drivers/net/dsa/sja1105/sja1105_static_config.h b/drivers/net/dsa/sja1105/sja1105_static_config.h index a9586d0b4b3be..2a3a1a92d7c37 100644 --- a/drivers/net/dsa/sja1105/sja1105_static_config.h +++ b/drivers/net/dsa/sja1105/sja1105_static_config.h @@ -151,6 +151,7 @@ struct sja1105_l2_lookup_entry { }; struct sja1105_l2_lookup_params_entry { + u64 maxaddrp[5]; /* P/Q/R/S only */ u64 start_dynspc; /* P/Q/R/S only */ u64 drpnolearn; /* P/Q/R/S only */ u64 use_static; /* P/Q/R/S only */ From 60f6053ff142217488d3f0d7b692f6a4ef45b99f Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 26 Jun 2019 02:39:38 +0300 Subject: [PATCH 06/10] net: dsa: sja1105: Back up static FDB entries in kernel memory After commit 8456721dd4ec ("net: dsa: sja1105: Add support for configuring address ageing time"), we started to reset the switch rather often (each time the bridge core changes the ageing time on a switch port). The unfortunate reality is that SJA1105 doesn't have any {cold, warm, whatever} reset mode in which it accepts a new configuration stream without flushing the FDB. Instead, in its world, the FDB *is* an optional part of the static configuration. So we play its game, and do what we also do for VLANs: for each 'bridge fdb' command, we add the FDB entry through the dynamic interface, and we append the in-kernel static config memory with info that we're going to use later, when the next reset command is going to be issued. The result is that 'bridge fdb' commands are now persistent (dynamically learned entries are lost, but that's ok). Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller --- drivers/net/dsa/sja1105/sja1105_main.c | 111 ++++++++++++++++++++++--- 1 file changed, 99 insertions(+), 12 deletions(-) diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c index 46a3c81825ecd..80d8d2f5c472d 100644 --- a/drivers/net/dsa/sja1105/sja1105_main.c +++ b/drivers/net/dsa/sja1105/sja1105_main.c @@ -816,6 +816,77 @@ static void sja1105_phylink_validate(struct dsa_switch *ds, int port, __ETHTOOL_LINK_MODE_MASK_NBITS); } +static int +sja1105_find_static_fdb_entry(struct sja1105_private *priv, int port, + const struct sja1105_l2_lookup_entry *requested) +{ + struct sja1105_l2_lookup_entry *l2_lookup; + struct sja1105_table *table; + int i; + + table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP]; + l2_lookup = table->entries; + + for (i = 0; i < table->entry_count; i++) + if (l2_lookup[i].macaddr == requested->macaddr && + l2_lookup[i].vlanid == requested->vlanid && + l2_lookup[i].destports & BIT(port)) + return i; + + return -1; +} + +/* We want FDB entries added statically through the bridge command to persist + * across switch resets, which are a common thing during normal SJA1105 + * operation. So we have to back them up in the static configuration tables + * and hence apply them on next static config upload... yay! + */ +static int +sja1105_static_fdb_change(struct sja1105_private *priv, int port, + const struct sja1105_l2_lookup_entry *requested, + bool keep) +{ + struct sja1105_l2_lookup_entry *l2_lookup; + struct sja1105_table *table; + int rc, match; + + table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP]; + + match = sja1105_find_static_fdb_entry(priv, port, requested); + if (match < 0) { + /* Can't delete a missing entry. */ + if (!keep) + return 0; + + /* No match => new entry */ + rc = sja1105_table_resize(table, table->entry_count + 1); + if (rc) + return rc; + + match = table->entry_count - 1; + } + + /* Assign pointer after the resize (it may be new memory) */ + l2_lookup = table->entries; + + /* We have a match. + * If the job was to add this FDB entry, it's already done (mostly + * anyway, since the port forwarding mask may have changed, case in + * which we update it). + * Otherwise we have to delete it. + */ + if (keep) { + l2_lookup[match] = *requested; + return 0; + } + + /* To remove, the strategy is to overwrite the element with + * the last one, and then reduce the array size by 1 + */ + l2_lookup[match] = l2_lookup[table->entry_count - 1]; + return sja1105_table_resize(table, table->entry_count - 1); +} + /* First-generation switches have a 4-way set associative TCAM that * holds the FDB entries. An FDB index spans from 0 to 1023 and is comprised of * a "bin" (grouping of 4 entries) and a "way" (an entry within a bin). @@ -866,7 +937,7 @@ int sja1105et_fdb_add(struct dsa_switch *ds, int port, struct sja1105_private *priv = ds->priv; struct device *dev = ds->dev; int last_unused = -1; - int bin, way; + int bin, way, rc; bin = sja1105et_fdb_hash(priv, addr, vid); @@ -910,9 +981,13 @@ int sja1105et_fdb_add(struct dsa_switch *ds, int port, } l2_lookup.index = sja1105et_fdb_index(bin, way); - return sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, - l2_lookup.index, &l2_lookup, - true); + rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, + l2_lookup.index, &l2_lookup, + true); + if (rc < 0) + return rc; + + return sja1105_static_fdb_change(priv, port, &l2_lookup, true); } int sja1105et_fdb_del(struct dsa_switch *ds, int port, @@ -920,7 +995,7 @@ int sja1105et_fdb_del(struct dsa_switch *ds, int port, { struct sja1105_l2_lookup_entry l2_lookup = {0}; struct sja1105_private *priv = ds->priv; - int index, bin, way; + int index, bin, way, rc; bool keep; bin = sja1105et_fdb_hash(priv, addr, vid); @@ -942,8 +1017,12 @@ int sja1105et_fdb_del(struct dsa_switch *ds, int port, else keep = false; - return sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, - index, &l2_lookup, keep); + rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, + index, &l2_lookup, keep); + if (rc < 0) + return rc; + + return sja1105_static_fdb_change(priv, port, &l2_lookup, keep); } int sja1105pqrs_fdb_add(struct dsa_switch *ds, int port, @@ -994,9 +1073,13 @@ int sja1105pqrs_fdb_add(struct dsa_switch *ds, int port, l2_lookup.index = i; skip_finding_an_index: - return sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, - l2_lookup.index, &l2_lookup, - true); + rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, + l2_lookup.index, &l2_lookup, + true); + if (rc < 0) + return rc; + + return sja1105_static_fdb_change(priv, port, &l2_lookup, true); } int sja1105pqrs_fdb_del(struct dsa_switch *ds, int port, @@ -1030,8 +1113,12 @@ int sja1105pqrs_fdb_del(struct dsa_switch *ds, int port, else keep = false; - return sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, - l2_lookup.index, &l2_lookup, keep); + rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, + l2_lookup.index, &l2_lookup, keep); + if (rc < 0) + return rc; + + return sja1105_static_fdb_change(priv, port, &l2_lookup, keep); } static int sja1105_fdb_add(struct dsa_switch *ds, int port, From 4a95078636402d425ad1c8411aff44be30e6a962 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 26 Jun 2019 02:39:39 +0300 Subject: [PATCH 07/10] net: dsa: sja1105: Add a high-level overview of the dynamic config interface When trying to add support for LOCKEDS (static FDB entries) on SJA1105 P/Q/R/S, at first I didn't remember how the abstraction I created worked, and actually thought it works by mistake. To avoid other people staring at the code and not making much sense out of it, add some comments at the top of the file. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller --- .../net/dsa/sja1105/sja1105_dynamic_config.c | 92 +++++++++++++++++++ 1 file changed, 92 insertions(+) diff --git a/drivers/net/dsa/sja1105/sja1105_dynamic_config.c b/drivers/net/dsa/sja1105/sja1105_dynamic_config.c index 56c83b9d52e40..3acd486159817 100644 --- a/drivers/net/dsa/sja1105/sja1105_dynamic_config.c +++ b/drivers/net/dsa/sja1105/sja1105_dynamic_config.c @@ -3,6 +3,98 @@ */ #include "sja1105.h" +/* In the dynamic configuration interface, the switch exposes a register-like + * view of some of the static configuration tables. + * Many times the field organization of the dynamic tables is abbreviated (not + * all fields are dynamically reconfigurable) and different from the static + * ones, but the key reason for having it is that we can spare a switch reset + * for settings that can be changed dynamically. + * + * This file creates a per-switch-family abstraction called + * struct sja1105_dynamic_table_ops and two operations that work with it: + * - sja1105_dynamic_config_write + * - sja1105_dynamic_config_read + * + * Compared to the struct sja1105_table_ops from sja1105_static_config.c, + * the dynamic accessors work with a compound buffer: + * + * packed_buf + * + * | + * V + * +-----------------------------------------+------------------+ + * | ENTRY BUFFER | COMMAND BUFFER | + * +-----------------------------------------+------------------+ + * + * <----------------------- packed_size ------------------------> + * + * The ENTRY BUFFER may or may not have the same layout, or size, as its static + * configuration table entry counterpart. When it does, the same packing + * function is reused (bar exceptional cases - see + * sja1105pqrs_dyn_l2_lookup_entry_packing). + * + * The reason for the COMMAND BUFFER being at the end is to be able to send + * a dynamic write command through a single SPI burst. By the time the switch + * reacts to the command, the ENTRY BUFFER is already populated with the data + * sent by the core. + * + * The COMMAND BUFFER is always SJA1105_SIZE_DYN_CMD bytes (one 32-bit word) in + * size. + * + * Sometimes the ENTRY BUFFER does not really exist (when the number of fields + * that can be reconfigured is small), then the switch repurposes some of the + * unused 32 bits of the COMMAND BUFFER to hold ENTRY data. + * + * The key members of struct sja1105_dynamic_table_ops are: + * - .entry_packing: A function that deals with packing an ENTRY structure + * into an SPI buffer, or retrieving an ENTRY structure + * from one. + * The @packed_buf pointer it's given does always point to + * the ENTRY portion of the buffer. + * - .cmd_packing: A function that deals with packing/unpacking the COMMAND + * structure to/from the SPI buffer. + * It is given the same @packed_buf pointer as .entry_packing, + * so most of the time, the @packed_buf points *behind* the + * COMMAND offset inside the buffer. + * To access the COMMAND portion of the buffer, the function + * knows its correct offset. + * Giving both functions the same pointer is handy because in + * extreme cases (see sja1105pqrs_dyn_l2_lookup_entry_packing) + * the .entry_packing is able to jump to the COMMAND portion, + * or vice-versa (sja1105pqrs_l2_lookup_cmd_packing). + * - .access: A bitmap of: + * OP_READ: Set if the hardware manual marks the ENTRY portion of the + * dynamic configuration table buffer as R (readable) after + * an SPI read command (the switch will populate the buffer). + * OP_WRITE: Set if the manual marks the ENTRY portion of the dynamic + * table buffer as W (writable) after an SPI write command + * (the switch will read the fields provided in the buffer). + * OP_DEL: Set if the manual says the VALIDENT bit is supported in the + * COMMAND portion of this dynamic config buffer (i.e. the + * specified entry can be invalidated through a SPI write + * command). + * OP_SEARCH: Set if the manual says that the index of an entry can + * be retrieved in the COMMAND portion of the buffer based + * on its ENTRY portion, as a result of a SPI write command. + * Only the TCAM-based FDB table on SJA1105 P/Q/R/S supports + * this. + * - .max_entry_count: The number of entries, counting from zero, that can be + * reconfigured through the dynamic interface. If a static + * table can be reconfigured at all dynamically, this + * number always matches the maximum number of supported + * static entries. + * - .packed_size: The length in bytes of the compound ENTRY + COMMAND BUFFER. + * Note that sometimes the compound buffer may contain holes in + * it (see sja1105_vlan_lookup_cmd_packing). The @packed_buf is + * contiguous however, so @packed_size includes any unused + * bytes. + * - .addr: The base SPI address at which the buffer must be written to the + * switch's memory. When looking at the hardware manual, this must + * always match the lowest documented address for the ENTRY, and not + * that of the COMMAND, since the other 32-bit words will follow along + * at the correct addresses. + */ + #define SJA1105_SIZE_DYN_CMD 4 #define SJA1105ET_SIZE_MAC_CONFIG_DYN_ENTRY \ From 17ae6555406a345c7d4096c4c274447e869e9384 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 26 Jun 2019 02:39:40 +0300 Subject: [PATCH 08/10] net: dsa: sja1105: Populate is_static for FDB entries on P/Q/R/S The reason why this wasn't tackled earlier is that I had hoped I understood the user manual wrong. But unfortunately hacks are required in order to retrieve the static/dynamic nature of FDB entries on SJA1105 P/Q/R/S, since this info is stored in the writeback buffer of the dynamic config command. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller --- .../net/dsa/sja1105/sja1105_dynamic_config.c | 62 ++++++++++++++++++- drivers/net/dsa/sja1105/sja1105_main.c | 3 +- .../net/dsa/sja1105/sja1105_static_config.h | 2 +- 3 files changed, 62 insertions(+), 5 deletions(-) diff --git a/drivers/net/dsa/sja1105/sja1105_dynamic_config.c b/drivers/net/dsa/sja1105/sja1105_dynamic_config.c index 3acd486159817..6bfb1696a6f28 100644 --- a/drivers/net/dsa/sja1105/sja1105_dynamic_config.c +++ b/drivers/net/dsa/sja1105/sja1105_dynamic_config.c @@ -149,13 +149,11 @@ sja1105pqrs_l2_lookup_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd, { u8 *p = buf + SJA1105PQRS_SIZE_L2_LOOKUP_ENTRY; const int size = SJA1105_SIZE_DYN_CMD; - u64 lockeds = 0; u64 hostcmd; sja1105_packing(p, &cmd->valid, 31, 31, size, op); sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op); sja1105_packing(p, &cmd->errors, 29, 29, size, op); - sja1105_packing(p, &lockeds, 28, 28, size, op); sja1105_packing(p, &cmd->valident, 27, 27, size, op); /* VALIDENT is supposed to indicate "keep or not", but in SJA1105 E/T, @@ -205,6 +203,64 @@ sja1105pqrs_l2_lookup_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd, SJA1105PQRS_SIZE_L2_LOOKUP_ENTRY, op); } +/* The switch is so retarded that it makes our command/entry abstraction + * crumble apart. + * + * On P/Q/R/S, the switch tries to say whether a FDB entry + * is statically programmed or dynamically learned via a flag called LOCKEDS. + * The hardware manual says about this fiels: + * + * On write will specify the format of ENTRY. + * On read the flag will be found cleared at times the VALID flag is found + * set. The flag will also be found cleared in response to a read having the + * MGMTROUTE flag set. In response to a read with the MGMTROUTE flag + * cleared, the flag be set if the most recent access operated on an entry + * that was either loaded by configuration or through dynamic reconfiguration + * (as opposed to automatically learned entries). + * + * The trouble with this flag is that it's part of the *command* to access the + * dynamic interface, and not part of the *entry* retrieved from it. + * Otherwise said, for a sja1105_dynamic_config_read, LOCKEDS is supposed to be + * an output from the switch into the command buffer, and for a + * sja1105_dynamic_config_write, the switch treats LOCKEDS as an input + * (hence we can write either static, or automatically learned entries, from + * the core). + * But the manual contradicts itself in the last phrase where it says that on + * read, LOCKEDS will be set to 1 for all FDB entries written through the + * dynamic interface (therefore, the value of LOCKEDS from the + * sja1105_dynamic_config_write is not really used for anything, it'll store a + * 1 anyway). + * This means you can't really write a FDB entry with LOCKEDS=0 (automatically + * learned) into the switch, which kind of makes sense. + * As for reading through the dynamic interface, it doesn't make too much sense + * to put LOCKEDS into the command, since the switch will inevitably have to + * ignore it (otherwise a command would be like "read the FDB entry 123, but + * only if it's dynamically learned" <- well how am I supposed to know?) and + * just use it as an output buffer for its findings. But guess what... that's + * what the entry buffer is for! + * Unfortunately, what really breaks this abstraction is the fact that it + * wasn't designed having the fact in mind that the switch can output + * entry-related data as writeback through the command buffer. + * However, whether a FDB entry is statically or dynamically learned *is* part + * of the entry and not the command data, no matter what the switch thinks. + * In order to do that, we'll need to wrap around the + * sja1105pqrs_l2_lookup_entry_packing from sja1105_static_config.c, and take + * a peek outside of the caller-supplied @buf (the entry buffer), to reach the + * command buffer. + */ +static size_t +sja1105pqrs_dyn_l2_lookup_entry_packing(void *buf, void *entry_ptr, + enum packing_op op) +{ + struct sja1105_l2_lookup_entry *entry = entry_ptr; + u8 *cmd = buf + SJA1105PQRS_SIZE_L2_LOOKUP_ENTRY; + const int size = SJA1105_SIZE_DYN_CMD; + + sja1105_packing(cmd, &entry->lockeds, 28, 28, size, op); + + return sja1105pqrs_l2_lookup_entry_packing(buf, entry_ptr, op); +} + static void sja1105et_l2_lookup_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd, enum packing_op op) @@ -485,7 +541,7 @@ struct sja1105_dynamic_table_ops sja1105et_dyn_ops[BLK_IDX_MAX_DYN] = { /* SJA1105P/Q/R/S: Second generation */ struct sja1105_dynamic_table_ops sja1105pqrs_dyn_ops[BLK_IDX_MAX_DYN] = { [BLK_IDX_L2_LOOKUP] = { - .entry_packing = sja1105pqrs_l2_lookup_entry_packing, + .entry_packing = sja1105pqrs_dyn_l2_lookup_entry_packing, .cmd_packing = sja1105pqrs_l2_lookup_cmd_packing, .access = (OP_READ | OP_WRITE | OP_DEL | OP_SEARCH), .max_entry_count = SJA1105_MAX_L2_LOOKUP_COUNT, diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c index 80d8d2f5c472d..ed0b721c794e5 100644 --- a/drivers/net/dsa/sja1105/sja1105_main.c +++ b/drivers/net/dsa/sja1105/sja1105_main.c @@ -1070,6 +1070,7 @@ int sja1105pqrs_fdb_add(struct dsa_switch *ds, int port, dev_err(ds->dev, "FDB is full, cannot add entry.\n"); return -EINVAL; } + l2_lookup.lockeds = true; l2_lookup.index = i; skip_finding_an_index: @@ -1205,7 +1206,7 @@ static int sja1105_fdb_dump(struct dsa_switch *ds, int port, */ if (!dsa_port_is_vlan_filtering(&ds->ports[port])) l2_lookup.vlanid = 1; - cb(macaddr, l2_lookup.vlanid, false, data); + cb(macaddr, l2_lookup.vlanid, l2_lookup.lockeds, data); } return 0; } diff --git a/drivers/net/dsa/sja1105/sja1105_static_config.h b/drivers/net/dsa/sja1105/sja1105_static_config.h index 2a3a1a92d7c37..684465fc08827 100644 --- a/drivers/net/dsa/sja1105/sja1105_static_config.h +++ b/drivers/net/dsa/sja1105/sja1105_static_config.h @@ -132,7 +132,7 @@ struct sja1105_l2_lookup_entry { u64 mask_vlanid; u64 mask_macaddr; u64 iotag; - bool lockeds; + u64 lockeds; union { /* LOCKEDS=1: Static FDB entries */ struct { From b3ee526a88d36dec752179d8866954a4e83f15aa Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 26 Jun 2019 02:39:41 +0300 Subject: [PATCH 09/10] net: dsa: sja1105: Use correct dsa_8021q VIDs for FDB commands A FDB entry means that "frames that match this VID and DMAC must be forwarded to this port". In the case of dsa_8021q however, the VID is not a single one (and neither two, as my previous patch assumed). The VID can be set either by the CPU port (1 tx_vid), or by any of the other front-panel port (n-1 rx_vid's). Fixes: 93647594d8f5 ("net: dsa: sja1105: Hide the dsa_8021q VLANs from the bridge fdb command") Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller --- drivers/net/dsa/sja1105/sja1105_main.c | 82 ++++++++++++++++++-------- 1 file changed, 56 insertions(+), 26 deletions(-) diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c index ed0b721c794e5..cadee76949357 100644 --- a/drivers/net/dsa/sja1105/sja1105_main.c +++ b/drivers/net/dsa/sja1105/sja1105_main.c @@ -1126,44 +1126,60 @@ static int sja1105_fdb_add(struct dsa_switch *ds, int port, const unsigned char *addr, u16 vid) { struct sja1105_private *priv = ds->priv; - int rc; + u16 rx_vid, tx_vid; + int rc, i; + + if (dsa_port_is_vlan_filtering(&ds->ports[port])) + return priv->info->fdb_add_cmd(ds, port, addr, vid); /* Since we make use of VLANs even when the bridge core doesn't tell us * to, translate these FDB entries into the correct dsa_8021q ones. + * The basic idea (also repeats for removal below) is: + * - Each of the other front-panel ports needs to be able to forward a + * pvid-tagged (aka tagged with their rx_vid) frame that matches this + * DMAC. + * - The CPU port (aka the tx_vid of this port) needs to be able to + * send a frame matching this DMAC to the specified port. + * For a better picture see net/dsa/tag_8021q.c. */ - if (!dsa_port_is_vlan_filtering(&ds->ports[port])) { - unsigned int upstream = dsa_upstream_port(priv->ds, port); - u16 tx_vid = dsa_8021q_tx_vid(ds, port); - u16 rx_vid = dsa_8021q_rx_vid(ds, port); + for (i = 0; i < SJA1105_NUM_PORTS; i++) { + if (i == port) + continue; + if (i == dsa_upstream_port(priv->ds, port)) + continue; - rc = priv->info->fdb_add_cmd(ds, port, addr, tx_vid); + rx_vid = dsa_8021q_rx_vid(ds, i); + rc = priv->info->fdb_add_cmd(ds, port, addr, rx_vid); if (rc < 0) return rc; - return priv->info->fdb_add_cmd(ds, upstream, addr, rx_vid); } - return priv->info->fdb_add_cmd(ds, port, addr, vid); + tx_vid = dsa_8021q_tx_vid(ds, port); + return priv->info->fdb_add_cmd(ds, port, addr, tx_vid); } static int sja1105_fdb_del(struct dsa_switch *ds, int port, const unsigned char *addr, u16 vid) { struct sja1105_private *priv = ds->priv; - int rc; + u16 rx_vid, tx_vid; + int rc, i; - /* Since we make use of VLANs even when the bridge core doesn't tell us - * to, translate these FDB entries into the correct dsa_8021q ones. - */ - if (!dsa_port_is_vlan_filtering(&ds->ports[port])) { - unsigned int upstream = dsa_upstream_port(priv->ds, port); - u16 tx_vid = dsa_8021q_tx_vid(ds, port); - u16 rx_vid = dsa_8021q_rx_vid(ds, port); + if (dsa_port_is_vlan_filtering(&ds->ports[port])) + return priv->info->fdb_del_cmd(ds, port, addr, vid); - rc = priv->info->fdb_del_cmd(ds, port, addr, tx_vid); + for (i = 0; i < SJA1105_NUM_PORTS; i++) { + if (i == port) + continue; + if (i == dsa_upstream_port(priv->ds, port)) + continue; + + rx_vid = dsa_8021q_rx_vid(ds, i); + rc = priv->info->fdb_del_cmd(ds, port, addr, rx_vid); if (rc < 0) return rc; - return priv->info->fdb_del_cmd(ds, upstream, addr, rx_vid); } - return priv->info->fdb_del_cmd(ds, port, addr, vid); + tx_vid = dsa_8021q_tx_vid(ds, port); + return priv->info->fdb_del_cmd(ds, port, addr, tx_vid); } static int sja1105_fdb_dump(struct dsa_switch *ds, int port, @@ -1171,8 +1187,12 @@ static int sja1105_fdb_dump(struct dsa_switch *ds, int port, { struct sja1105_private *priv = ds->priv; struct device *dev = ds->dev; + u16 rx_vid, tx_vid; int i; + rx_vid = dsa_8021q_rx_vid(ds, port); + tx_vid = dsa_8021q_tx_vid(ds, port); + for (i = 0; i < SJA1105_MAX_L2_LOOKUP_COUNT; i++) { struct sja1105_l2_lookup_entry l2_lookup = {0}; u8 macaddr[ETH_ALEN]; @@ -1198,14 +1218,24 @@ static int sja1105_fdb_dump(struct dsa_switch *ds, int port, continue; u64_to_ether_addr(l2_lookup.macaddr, macaddr); - /* We need to hide the dsa_8021q VLAN from the user. - * Convert the TX VID into the pvid that is active in - * standalone and non-vlan_filtering modes, aka 1. - * The RX VID is applied on the CPU port, which is not seen by - * the bridge core anyway, so there's nothing to hide. + /* We need to hide the dsa_8021q VLANs from the user. This + * basically means hiding the duplicates and only showing + * the pvid that is supposed to be active in standalone and + * non-vlan_filtering modes (aka 1). + * - For statically added FDB entries (bridge fdb add), we + * can convert the TX VID (coming from the CPU port) into the + * pvid and ignore the RX VIDs of the other ports. + * - For dynamically learned FDB entries, a single entry with + * no duplicates is learned - that which has the real port's + * pvid, aka RX VID. */ - if (!dsa_port_is_vlan_filtering(&ds->ports[port])) - l2_lookup.vlanid = 1; + if (!dsa_port_is_vlan_filtering(&ds->ports[port])) { + if (l2_lookup.vlanid == tx_vid || + l2_lookup.vlanid == rx_vid) + l2_lookup.vlanid = 1; + else + continue; + } cb(macaddr, l2_lookup.vlanid, l2_lookup.lockeds, data); } return 0; From d763778224ea8005b650e12d8f4cd470265fe0b9 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 26 Jun 2019 02:39:42 +0300 Subject: [PATCH 10/10] net: dsa: sja1105: Implement is_static for FDB entries on E/T The first generation switches don't tell us through the dynamic config interface whether the dumped FDB entries are static or not (the LOCKEDS bit from P/Q/R/S). However, now that we're keeping a mirror of all 'bridge fdb' commands in the static config, this is an opportunity to compare a dumped FDB entry to the driver's private database. After all, what makes an entry static is that *we* added it. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller --- drivers/net/dsa/sja1105/sja1105_main.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c index cadee76949357..caebf76eaa3e7 100644 --- a/drivers/net/dsa/sja1105/sja1105_main.c +++ b/drivers/net/dsa/sja1105/sja1105_main.c @@ -1218,6 +1218,21 @@ static int sja1105_fdb_dump(struct dsa_switch *ds, int port, continue; u64_to_ether_addr(l2_lookup.macaddr, macaddr); + /* On SJA1105 E/T, the switch doesn't implement the LOCKEDS + * bit, so it doesn't tell us whether a FDB entry is static + * or not. + * But, of course, we can find out - we're the ones who added + * it in the first place. + */ + if (priv->info->device_id == SJA1105E_DEVICE_ID || + priv->info->device_id == SJA1105T_DEVICE_ID) { + int match; + + match = sja1105_find_static_fdb_entry(priv, port, + &l2_lookup); + l2_lookup.lockeds = (match >= 0); + } + /* We need to hide the dsa_8021q VLANs from the user. This * basically means hiding the duplicates and only showing * the pvid that is supposed to be active in standalone and