Merge tag 'net-6.1-rc3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bpf.

  The net-memcg fix stands out, the rest is very run-off-the-mill. Maybe
  I'm biased.

  Current release - regressions:

   - eth: fman: re-expose location of the MAC address to userspace,
     apparently some udev scripts depended on the exact value

  Current release - new code bugs:

   - bpf:
       - wait for busy refill_work when destroying bpf memory allocator
       - allow bpf_user_ringbuf_drain() callbacks to return 1
       - fix dispatcher patchable function entry to 5 bytes nop

  Previous releases - regressions:

   - net-memcg: avoid stalls when under memory pressure

   - tcp: fix indefinite deferral of RTO with SACK reneging

   - tipc: fix a null-ptr-deref in tipc_topsrv_accept

   - eth: macb: specify PHY PM management done by MAC

   - tcp: fix a signed-integer-overflow bug in tcp_add_backlog()

  Previous releases - always broken:

   - eth: amd-xgbe: SFP fixes and compatibility improvements

  Misc:

   - docs: netdev: offer performance feedback to contributors"

* tag 'net-6.1-rc3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (37 commits)
  net-memcg: avoid stalls when under memory pressure
  tcp: fix indefinite deferral of RTO with SACK reneging
  tcp: fix a signed-integer-overflow bug in tcp_add_backlog()
  net: lantiq_etop: don't free skb when returning NETDEV_TX_BUSY
  net: fix UAF issue in nfqnl_nf_hook_drop() when ops_init() failed
  docs: netdev: offer performance feedback to contributors
  kcm: annotate data-races around kcm->rx_wait
  kcm: annotate data-races around kcm->rx_psock
  net: fman: Use physical address for userspace interfaces
  net/mlx5e: Cleanup MACsec uninitialization routine
  atlantic: fix deadlock at aq_nic_stop
  nfp: only clean `sp_indiff` when application firmware is unloaded
  amd-xgbe: add the bit rate quirk for Molex cables
  amd-xgbe: fix the SFP compliance codes check for DAC cables
  amd-xgbe: enable PLL_CTL for fixed PHY modes only
  amd-xgbe: use enums for mailbox cmd and sub_cmds
  amd-xgbe: Yellow carp devices do not need rrc
  bpf: Use __llist_del_all() whenever possbile during memory draining
  bpf: Wait for busy refill_work when destroying bpf memory allocator
  MAINTAINERS: add keyword match on PTP
  ...

Author: torvalds

Documentation/process/maintainer-netdev.rst

@@ -319,3 +319,13 @@ unpatched tree to confirm infrastructure didn't mangle it.
 Finally, go back and read
 :ref:`Documentation/process/submitting-patches.rst <submittingpatches>`
 to be sure you are not repeating some common mistake documented there.
+
+My company uses peer feedback in employee performance reviews. Can I ask netdev maintainers for feedback?
+---------------------------------------------------------------------------------------------------------
+
+Yes, especially if you spend significant amount of time reviewing code
+and go out of your way to improve shared infrastructure.
+
+The feedback must be requested by you, the contributor, and will always
+be shared with you (even if you request for it to be submitted to your
+manager).

MAINTAINERS

@@ -16675,6 +16675,7 @@ F:	Documentation/driver-api/ptp.rst
 F:	drivers/net/phy/dp83640*
 F:	drivers/ptp/*
 F:	include/linux/ptp_cl*
+K:	(?:\b|_)ptp(?:\b|_)
 
 PTP VIRTUAL CLOCK SUPPORT
 M:	Yangbo Lu <[email protected]>

arch/x86/net/bpf_jit_comp.c

@@ -11,6 +11,7 @@
 #include <linux/bpf.h>
 #include <linux/memory.h>
 #include <linux/sort.h>
+#include <linux/init.h>
 #include <asm/extable.h>
 #include <asm/set_memory.h>
 #include <asm/nospec-branch.h>
@@ -388,6 +389,18 @@ static int __bpf_arch_text_poke(void *ip, enum bpf_text_poke_type t,
 	return ret;
 }
 
+int __init bpf_arch_init_dispatcher_early(void *ip)
+{
+	const u8 *nop_insn = x86_nops[5];
+
+	if (is_endbr(*(u32 *)ip))
+		ip += ENDBR_INSN_SIZE;
+
+	if (memcmp(ip, nop_insn, X86_PATCH_SIZE))
+		text_poke_early(ip, nop_insn, X86_PATCH_SIZE);
+	return 0;
+}
+
 int bpf_arch_text_poke(void *ip, enum bpf_text_poke_type t,
 		       void *old_addr, void *new_addr)
 {

drivers/net/ethernet/amd/xgbe/xgbe-pci.c

@@ -285,6 +285,9 @@ static int xgbe_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 		/* Yellow Carp devices do not need cdr workaround */
 		pdata->vdata->an_cdr_workaround = 0;
+
+		/* Yellow Carp devices do not need rrc */
+		pdata->vdata->enable_rrc = 0;
 	} else {
 		pdata->xpcs_window_def_reg = PCS_V2_WINDOW_DEF;
 		pdata->xpcs_window_sel_reg = PCS_V2_WINDOW_SELECT;
@@ -483,6 +486,7 @@ static struct xgbe_version_data xgbe_v2a = {
 	.tx_desc_prefetch		= 5,
 	.rx_desc_prefetch		= 5,
 	.an_cdr_workaround		= 1,
+	.enable_rrc			= 1,
 };
 
 static struct xgbe_version_data xgbe_v2b = {
@@ -498,6 +502,7 @@ static struct xgbe_version_data xgbe_v2b = {
 	.tx_desc_prefetch		= 5,
 	.rx_desc_prefetch		= 5,
 	.an_cdr_workaround		= 1,
+	.enable_rrc			= 1,
 };
 
 static const struct pci_device_id xgbe_pci_table[] = {

drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c

@@ -239,6 +239,7 @@ enum xgbe_sfp_speed {
 #define XGBE_SFP_BASE_BR_1GBE_MAX		0x0d
 #define XGBE_SFP_BASE_BR_10GBE_MIN		0x64
 #define XGBE_SFP_BASE_BR_10GBE_MAX		0x68
+#define XGBE_MOLEX_SFP_BASE_BR_10GBE_MAX	0x78
 
 #define XGBE_SFP_BASE_CU_CABLE_LEN		18
 
@@ -284,6 +285,8 @@ struct xgbe_sfp_eeprom {
 #define XGBE_BEL_FUSE_VENDOR	"BEL-FUSE        "
 #define XGBE_BEL_FUSE_PARTNO	"1GBT-SFP06      "
 
+#define XGBE_MOLEX_VENDOR	"Molex Inc.      "
+
 struct xgbe_sfp_ascii {
 	union {
 		char vendor[XGBE_SFP_BASE_VENDOR_NAME_LEN + 1];
@@ -834,7 +837,11 @@ static bool xgbe_phy_sfp_bit_rate(struct xgbe_sfp_eeprom *sfp_eeprom,
 		break;
 	case XGBE_SFP_SPEED_10000:
 		min = XGBE_SFP_BASE_BR_10GBE_MIN;
-		max = XGBE_SFP_BASE_BR_10GBE_MAX;
+		if (memcmp(&sfp_eeprom->base[XGBE_SFP_BASE_VENDOR_NAME],
+			   XGBE_MOLEX_VENDOR, XGBE_SFP_BASE_VENDOR_NAME_LEN) == 0)
+			max = XGBE_MOLEX_SFP_BASE_BR_10GBE_MAX;
+		else
+			max = XGBE_SFP_BASE_BR_10GBE_MAX;
 		break;
 	default:
 		return false;
@@ -1151,7 +1158,10 @@ static void xgbe_phy_sfp_parse_eeprom(struct xgbe_prv_data *pdata)
 	}
 
 	/* Determine the type of SFP */
-	if (sfp_base[XGBE_SFP_BASE_10GBE_CC] & XGBE_SFP_BASE_10GBE_CC_SR)
+	if (phy_data->sfp_cable == XGBE_SFP_CABLE_PASSIVE &&
+	    xgbe_phy_sfp_bit_rate(sfp_eeprom, XGBE_SFP_SPEED_10000))
+		phy_data->sfp_base = XGBE_SFP_BASE_10000_CR;
+	else if (sfp_base[XGBE_SFP_BASE_10GBE_CC] & XGBE_SFP_BASE_10GBE_CC_SR)
 		phy_data->sfp_base = XGBE_SFP_BASE_10000_SR;
 	else if (sfp_base[XGBE_SFP_BASE_10GBE_CC] & XGBE_SFP_BASE_10GBE_CC_LR)
 		phy_data->sfp_base = XGBE_SFP_BASE_10000_LR;
@@ -1167,9 +1177,6 @@ static void xgbe_phy_sfp_parse_eeprom(struct xgbe_prv_data *pdata)
 		phy_data->sfp_base = XGBE_SFP_BASE_1000_CX;
 	else if (sfp_base[XGBE_SFP_BASE_1GBE_CC] & XGBE_SFP_BASE_1GBE_CC_T)
 		phy_data->sfp_base = XGBE_SFP_BASE_1000_T;
-	else if ((phy_data->sfp_cable == XGBE_SFP_CABLE_PASSIVE) &&
-		 xgbe_phy_sfp_bit_rate(sfp_eeprom, XGBE_SFP_SPEED_10000))
-		phy_data->sfp_base = XGBE_SFP_BASE_10000_CR;
 
 	switch (phy_data->sfp_base) {
 	case XGBE_SFP_BASE_1000_T:
@@ -1979,6 +1986,10 @@ static void xgbe_phy_rx_reset(struct xgbe_prv_data *pdata)
 
 static void xgbe_phy_pll_ctrl(struct xgbe_prv_data *pdata, bool enable)
 {
+	/* PLL_CTRL feature needs to be enabled for fixed PHY modes (Non-Autoneg) only */
+	if (pdata->phy.autoneg != AUTONEG_DISABLE)
+		return;
+
 	XMDIO_WRITE_BITS(pdata, MDIO_MMD_PMAPMD, MDIO_VEND2_PMA_MISC_CTRL0,
 			 XGBE_PMA_PLL_CTRL_MASK,
 			 enable ? XGBE_PMA_PLL_CTRL_ENABLE
@@ -1989,7 +2000,7 @@ static void xgbe_phy_pll_ctrl(struct xgbe_prv_data *pdata, bool enable)
 }
 
 static void xgbe_phy_perform_ratechange(struct xgbe_prv_data *pdata,
-					unsigned int cmd, unsigned int sub_cmd)
+					enum xgbe_mb_cmd cmd, enum xgbe_mb_subcmd sub_cmd)
 {
 	unsigned int s0 = 0;
 	unsigned int wait;
@@ -2029,14 +2040,16 @@ static void xgbe_phy_perform_ratechange(struct xgbe_prv_data *pdata,
 	xgbe_phy_rx_reset(pdata);
 
 reenable_pll:
-	/* Enable PLL re-initialization */
-	xgbe_phy_pll_ctrl(pdata, true);
+	/* Enable PLL re-initialization, not needed for PHY Power Off and RRC cmds */
+	if (cmd != XGBE_MB_CMD_POWER_OFF &&
+	    cmd != XGBE_MB_CMD_RRC)
+		xgbe_phy_pll_ctrl(pdata, true);
 }
 
 static void xgbe_phy_rrc(struct xgbe_prv_data *pdata)
 {
 	/* Receiver Reset Cycle */
-	xgbe_phy_perform_ratechange(pdata, 5, 0);
+	xgbe_phy_perform_ratechange(pdata, XGBE_MB_CMD_RRC, XGBE_MB_SUBCMD_NONE);
 
 	netif_dbg(pdata, link, pdata->netdev, "receiver reset complete\n");
 }
@@ -2046,7 +2059,7 @@ static void xgbe_phy_power_off(struct xgbe_prv_data *pdata)
 	struct xgbe_phy_data *phy_data = pdata->phy_data;
 
 	/* Power off */
-	xgbe_phy_perform_ratechange(pdata, 0, 0);
+	xgbe_phy_perform_ratechange(pdata, XGBE_MB_CMD_POWER_OFF, XGBE_MB_SUBCMD_NONE);
 
 	phy_data->cur_mode = XGBE_MODE_UNKNOWN;
 
@@ -2061,14 +2074,17 @@ static void xgbe_phy_sfi_mode(struct xgbe_prv_data *pdata)
 
 	/* 10G/SFI */
 	if (phy_data->sfp_cable != XGBE_SFP_CABLE_PASSIVE) {
-		xgbe_phy_perform_ratechange(pdata, 3, 0);
+		xgbe_phy_perform_ratechange(pdata, XGBE_MB_CMD_SET_10G_SFI, XGBE_MB_SUBCMD_ACTIVE);
 	} else {
 		if (phy_data->sfp_cable_len <= 1)
-			xgbe_phy_perform_ratechange(pdata, 3, 1);
+			xgbe_phy_perform_ratechange(pdata, XGBE_MB_CMD_SET_10G_SFI,
+						    XGBE_MB_SUBCMD_PASSIVE_1M);
 		else if (phy_data->sfp_cable_len <= 3)
-			xgbe_phy_perform_ratechange(pdata, 3, 2);
+			xgbe_phy_perform_ratechange(pdata, XGBE_MB_CMD_SET_10G_SFI,
+						    XGBE_MB_SUBCMD_PASSIVE_3M);
 		else
-			xgbe_phy_perform_ratechange(pdata, 3, 3);
+			xgbe_phy_perform_ratechange(pdata, XGBE_MB_CMD_SET_10G_SFI,
+						    XGBE_MB_SUBCMD_PASSIVE_OTHER);
 	}
 
 	phy_data->cur_mode = XGBE_MODE_SFI;
@@ -2083,7 +2099,7 @@ static void xgbe_phy_x_mode(struct xgbe_prv_data *pdata)
 	xgbe_phy_set_redrv_mode(pdata);
 
 	/* 1G/X */
-	xgbe_phy_perform_ratechange(pdata, 1, 3);
+	xgbe_phy_perform_ratechange(pdata, XGBE_MB_CMD_SET_1G, XGBE_MB_SUBCMD_1G_KX);
 
 	phy_data->cur_mode = XGBE_MODE_X;
 
@@ -2097,7 +2113,7 @@ static void xgbe_phy_sgmii_1000_mode(struct xgbe_prv_data *pdata)
 	xgbe_phy_set_redrv_mode(pdata);
 
 	/* 1G/SGMII */
-	xgbe_phy_perform_ratechange(pdata, 1, 2);
+	xgbe_phy_perform_ratechange(pdata, XGBE_MB_CMD_SET_1G, XGBE_MB_SUBCMD_1G_SGMII);
 
 	phy_data->cur_mode = XGBE_MODE_SGMII_1000;
 
@@ -2111,7 +2127,7 @@ static void xgbe_phy_sgmii_100_mode(struct xgbe_prv_data *pdata)
 	xgbe_phy_set_redrv_mode(pdata);
 
 	/* 100M/SGMII */
-	xgbe_phy_perform_ratechange(pdata, 1, 1);
+	xgbe_phy_perform_ratechange(pdata, XGBE_MB_CMD_SET_1G, XGBE_MB_SUBCMD_100MBITS);
 
 	phy_data->cur_mode = XGBE_MODE_SGMII_100;
 
@@ -2125,7 +2141,7 @@ static void xgbe_phy_kr_mode(struct xgbe_prv_data *pdata)
 	xgbe_phy_set_redrv_mode(pdata);
 
 	/* 10G/KR */
-	xgbe_phy_perform_ratechange(pdata, 4, 0);
+	xgbe_phy_perform_ratechange(pdata, XGBE_MB_CMD_SET_10G_KR, XGBE_MB_SUBCMD_NONE);
 
 	phy_data->cur_mode = XGBE_MODE_KR;
 
@@ -2139,7 +2155,7 @@ static void xgbe_phy_kx_2500_mode(struct xgbe_prv_data *pdata)
 	xgbe_phy_set_redrv_mode(pdata);
 
 	/* 2.5G/KX */
-	xgbe_phy_perform_ratechange(pdata, 2, 0);
+	xgbe_phy_perform_ratechange(pdata, XGBE_MB_CMD_SET_2_5G, XGBE_MB_SUBCMD_NONE);
 
 	phy_data->cur_mode = XGBE_MODE_KX_2500;
 
@@ -2153,7 +2169,7 @@ static void xgbe_phy_kx_1000_mode(struct xgbe_prv_data *pdata)
 	xgbe_phy_set_redrv_mode(pdata);
 
 	/* 1G/KX */
-	xgbe_phy_perform_ratechange(pdata, 1, 3);
+	xgbe_phy_perform_ratechange(pdata, XGBE_MB_CMD_SET_1G, XGBE_MB_SUBCMD_1G_KX);
 
 	phy_data->cur_mode = XGBE_MODE_KX_1000;
 
@@ -2640,7 +2656,7 @@ static int xgbe_phy_link_status(struct xgbe_prv_data *pdata, int *an_restart)
 	}
 
 	/* No link, attempt a receiver reset cycle */
-	if (phy_data->rrc_count++ > XGBE_RRC_FREQUENCY) {
+	if (pdata->vdata->enable_rrc && phy_data->rrc_count++ > XGBE_RRC_FREQUENCY) {
 		phy_data->rrc_count = 0;
 		xgbe_phy_rrc(pdata);
 	}

drivers/net/ethernet/amd/xgbe/xgbe.h

@@ -611,6 +611,31 @@ enum xgbe_mdio_mode {
 	XGBE_MDIO_MODE_CL45,
 };
 
+enum xgbe_mb_cmd {
+	XGBE_MB_CMD_POWER_OFF = 0,
+	XGBE_MB_CMD_SET_1G,
+	XGBE_MB_CMD_SET_2_5G,
+	XGBE_MB_CMD_SET_10G_SFI,
+	XGBE_MB_CMD_SET_10G_KR,
+	XGBE_MB_CMD_RRC
+};
+
+enum xgbe_mb_subcmd {
+	XGBE_MB_SUBCMD_NONE = 0,
+
+	/* 10GbE SFP subcommands */
+	XGBE_MB_SUBCMD_ACTIVE = 0,
+	XGBE_MB_SUBCMD_PASSIVE_1M,
+	XGBE_MB_SUBCMD_PASSIVE_3M,
+	XGBE_MB_SUBCMD_PASSIVE_OTHER,
+
+	/* 1GbE Mode subcommands */
+	XGBE_MB_SUBCMD_10MBITS = 0,
+	XGBE_MB_SUBCMD_100MBITS,
+	XGBE_MB_SUBCMD_1G_SGMII,
+	XGBE_MB_SUBCMD_1G_KX
+};
+
 struct xgbe_phy {
 	struct ethtool_link_ksettings lks;
 
@@ -1013,6 +1038,7 @@ struct xgbe_version_data {
 	unsigned int tx_desc_prefetch;
 	unsigned int rx_desc_prefetch;
 	unsigned int an_cdr_workaround;
+	unsigned int enable_rrc;
 };
 
 struct xgbe_prv_data {