Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

 1) Significantly shrink the core networking routing structures. Result
    of http://vger.kernel.org/~davem/seoul2017_netdev_keynote.pdf

 2) Add netdevsim driver for testing various offloads, from Jakub
    Kicinski.

 3) Support cross-chip FDB operations in DSA, from Vivien Didelot.

 4) Add a 2nd listener hash table for TCP, similar to what was done for
    UDP. From Martin KaFai Lau.

 5) Add eBPF based queue selection to tun, from Jason Wang.

 6) Lockless qdisc support, from John Fastabend.

 7) SCTP stream interleave support, from Xin Long.

 8) Smoother TCP receive autotuning, from Eric Dumazet.

 9) Lots of erspan tunneling enhancements, from William Tu.

10) Add true function call support to BPF, from Alexei Starovoitov.

11) Add explicit support for GRO HW offloading, from Michael Chan.

12) Support extack generation in more netlink subsystems. From Alexander
    Aring, Quentin Monnet, and Jakub Kicinski.

13) Add 1000BaseX, flow control, and EEE support to mvneta driver. From
    Russell King.

14) Add flow table abstraction to netfilter, from Pablo Neira Ayuso.

15) Many improvements and simplifications to the NFP driver bpf JIT,
    from Jakub Kicinski.

16) Support for ipv6 non-equal cost multipath routing, from Ido
    Schimmel.

17) Add resource abstration to devlink, from Arkadi Sharshevsky.

18) Packet scheduler classifier shared filter block support, from Jiri
    Pirko.

19) Avoid locking in act_csum, from Davide Caratti.

20) devinet_ioctl() simplifications from Al viro.

21) More TCP bpf improvements from Lawrence Brakmo.

22) Add support for onlink ipv6 route flag, similar to ipv4, from David
    Ahern.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1925 commits)
  tls: Add support for encryption using async offload accelerator
  ip6mr: fix stale iterator
  net/sched: kconfig: Remove blank help texts
  openvswitch: meter: Use 64-bit arithmetic instead of 32-bit
  tcp_nv: fix potential integer overflow in tcpnv_acked
  r8169: fix RTL8168EP take too long to complete driver initialization.
  qmi_wwan: Add support for Quectel EP06
  rtnetlink: enable IFLA_IF_NETNSID for RTM_NEWLINK
  ipmr: Fix ptrdiff_t print formatting
  ibmvnic: Wait for device response when changing MAC
  qlcnic: fix deadlock bug
  tcp: release sk_frag.page in tcp_disconnect
  ipv4: Get the address of interface correctly.
  net_sched: gen_estimator: fix lockdep splat
  net: macb: Handle HRESP error
  net/mlx5e: IPoIB, Fix copy-paste bug in flow steering refactoring
  ipv6: addrconf: break critical section in addrconf_verify_rtnl()
  ipv6: change route cache aging logic
  i40e/i40evf: Update DESC_NEEDED value to reflect larger value
  bnxt_en: cleanup DIM work on device shutdown
  ...

1 files changed, 78 insertions, 41 deletions

diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 9dfc1c4..6c7d928 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -98,12 +98,18 @@ static const enum gpiod_flags gpio_flags[] = {
 
 static DEFINE_MUTEX(sfp_mutex);
 
+struct sff_data {
+	unsigned int gpios;
+	bool (*module_supported)(const struct sfp_eeprom_id *id);
+};
+
 struct sfp {
 	struct device *dev;
 	struct i2c_adapter *i2c;
 	struct mii_bus *i2c_mii;
 	struct sfp_bus *sfp_bus;
 	struct phy_device *mod_phy;
+	const struct sff_data *type;
 
 	unsigned int (*get_state)(struct sfp *);
 	void (*set_state)(struct sfp *, unsigned int);
@@ -123,6 +129,36 @@ struct sfp {
 	struct sfp_eeprom_id id;
 };
 
+static bool sff_module_supported(const struct sfp_eeprom_id *id)
+{
+	return id->base.phys_id == SFP_PHYS_ID_SFF &&
+	       id->base.phys_ext_id == SFP_PHYS_EXT_ID_SFP;
+}
+
+static const struct sff_data sff_data = {
+	.gpios = SFP_F_LOS | SFP_F_TX_FAULT | SFP_F_TX_DISABLE,
+	.module_supported = sff_module_supported,
+};
+
+static bool sfp_module_supported(const struct sfp_eeprom_id *id)
+{
+	return id->base.phys_id == SFP_PHYS_ID_SFP &&
+	       id->base.phys_ext_id == SFP_PHYS_EXT_ID_SFP;
+}
+
+static const struct sff_data sfp_data = {
+	.gpios = SFP_F_PRESENT | SFP_F_LOS | SFP_F_TX_FAULT |
+		 SFP_F_TX_DISABLE | SFP_F_RATE_SELECT,
+	.module_supported = sfp_module_supported,
+};
+
+static const struct of_device_id sfp_of_match[] = {
+	{ .compatible = "sff,sff", .data = &sff_data, },
+	{ .compatible = "sff,sfp", .data = &sfp_data, },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, sfp_of_match);
+
 static unsigned long poll_jiffies;
 
 static unsigned int sfp_gpio_get_state(struct sfp *sfp)
@@ -141,6 +177,11 @@ static unsigned int sfp_gpio_get_state(struct sfp *sfp)
 	return state;
 }
 
+static unsigned int sff_gpio_get_state(struct sfp *sfp)
+{
+	return sfp_gpio_get_state(sfp) | SFP_F_PRESENT;
+}
+
 static void sfp_gpio_set_state(struct sfp *sfp, unsigned int state)
 {
 	if (state & SFP_F_PRESENT) {
@@ -315,12 +356,12 @@ static void sfp_sm_probe_phy(struct sfp *sfp)
 	msleep(T_PHY_RESET_MS);
 
 	phy = mdiobus_scan(sfp->i2c_mii, SFP_PHY_ADDR);
-	if (IS_ERR(phy)) {
-		dev_err(sfp->dev, "mdiobus scan returned %ld\n", PTR_ERR(phy));
+	if (phy == ERR_PTR(-ENODEV)) {
+		dev_info(sfp->dev, "no PHY detected\n");
 		return;
 	}
-	if (!phy) {
-		dev_info(sfp->dev, "no PHY detected\n");
+	if (IS_ERR(phy)) {
+		dev_err(sfp->dev, "mdiobus scan returned %ld\n", PTR_ERR(phy));
 		return;
 	}
 
@@ -425,11 +466,6 @@ static int sfp_sm_mod_probe(struct sfp *sfp)
 {
 	/* SFP module inserted - read I2C data */
 	struct sfp_eeprom_id id;
-	char vendor[17];
-	char part[17];
-	char sn[17];
-	char date[9];
-	char rev[5];
 	u8 check;
 	int err;
 
@@ -465,24 +501,17 @@ static int sfp_sm_mod_probe(struct sfp *sfp)
 
 	sfp->id = id;
 
-	memcpy(vendor, sfp->id.base.vendor_name, 16);
-	vendor[16] = '\0';
-	memcpy(part, sfp->id.base.vendor_pn, 16);
-	part[16] = '\0';
-	memcpy(rev, sfp->id.base.vendor_rev, 4);
-	rev[4] = '\0';
-	memcpy(sn, sfp->id.ext.vendor_sn, 16);
-	sn[16] = '\0';
-	memcpy(date, sfp->id.ext.datecode, 8);
-	date[8] = '\0';
-
-	dev_info(sfp->dev, "module %s %s rev %s sn %s dc %s\n",
-		 vendor, part, rev, sn, date);
-
-	/* We only support SFP modules, not the legacy GBIC modules. */
-	if (sfp->id.base.phys_id != SFP_PHYS_ID_SFP ||
-	    sfp->id.base.phys_ext_id != SFP_PHYS_EXT_ID_SFP) {
-		dev_err(sfp->dev, "module is not SFP - phys id 0x%02x 0x%02x\n",
+	dev_info(sfp->dev, "module %.*s %.*s rev %.*s sn %.*s dc %.*s\n",
+		 (int)sizeof(id.base.vendor_name), id.base.vendor_name,
+		 (int)sizeof(id.base.vendor_pn), id.base.vendor_pn,
+		 (int)sizeof(id.base.vendor_rev), id.base.vendor_rev,
+		 (int)sizeof(id.ext.vendor_sn), id.ext.vendor_sn,
+		 (int)sizeof(id.ext.datecode), id.ext.datecode);
+
+	/* Check whether we support this module */
+	if (!sfp->type->module_supported(&sfp->id)) {
+		dev_err(sfp->dev,
+			"module is not supported - phys id 0x%02x 0x%02x\n",
 			sfp->id.base.phys_id, sfp->id.base.phys_ext_id);
 		return -EINVAL;
 	}
@@ -683,20 +712,19 @@ static int sfp_module_eeprom(struct sfp *sfp, struct ethtool_eeprom *ee,
 		len = min_t(unsigned int, last, ETH_MODULE_SFF_8079_LEN);
 		len -= first;
 
-		ret = sfp->read(sfp, false, first, data, len);
+		ret = sfp_read(sfp, false, first, data, len);
 		if (ret < 0)
 			return ret;
 
 		first += len;
 		data += len;
 	}
-	if (first >= ETH_MODULE_SFF_8079_LEN &&
-	    first < ETH_MODULE_SFF_8472_LEN) {
+	if (first < ETH_MODULE_SFF_8472_LEN && last > ETH_MODULE_SFF_8079_LEN) {
 		len = min_t(unsigned int, last, ETH_MODULE_SFF_8472_LEN);
 		len -= first;
 		first -= ETH_MODULE_SFF_8079_LEN;
 
-		ret = sfp->read(sfp, true, first, data, len);
+		ret = sfp_read(sfp, true, first, data, len);
 		if (ret < 0)
 			return ret;
 	}
@@ -801,6 +829,7 @@ static void sfp_cleanup(void *data)
 
 static int sfp_probe(struct platform_device *pdev)
 {
+	const struct sff_data *sff;
 	struct sfp *sfp;
 	bool poll = false;
 	int irq, err, i;
@@ -815,10 +844,19 @@ static int sfp_probe(struct platform_device *pdev)
 	if (err < 0)
 		return err;
 
+	sff = sfp->type = &sfp_data;
+
 	if (pdev->dev.of_node) {
 		struct device_node *node = pdev->dev.of_node;
+		const struct of_device_id *id;
 		struct device_node *np;
 
+		id = of_match_node(sfp_of_match, node);
+		if (WARN_ON(!id))
+			return -EINVAL;
+
+		sff = sfp->type = id->data;
+
 		np = of_parse_phandle(node, "i2c-bus", 0);
 		if (np) {
 			struct i2c_adapter *i2c;
@@ -834,17 +872,22 @@ static int sfp_probe(struct platform_device *pdev)
 				return err;
 			}
 		}
+	}
 
-		for (i = 0; i < GPIO_MAX; i++) {
+	for (i = 0; i < GPIO_MAX; i++)
+		if (sff->gpios & BIT(i)) {
 			sfp->gpio[i] = devm_gpiod_get_optional(sfp->dev,
 					   gpio_of_names[i], gpio_flags[i]);
 			if (IS_ERR(sfp->gpio[i]))
 				return PTR_ERR(sfp->gpio[i]);
 		}
 
-		sfp->get_state = sfp_gpio_get_state;
-		sfp->set_state = sfp_gpio_set_state;
-	}
+	sfp->get_state = sfp_gpio_get_state;
+	sfp->set_state = sfp_gpio_set_state;
+
+	/* Modules that have no detect signal are always present */
+	if (!(sfp->gpio[GPIO_MODDEF0]))
+		sfp->get_state = sff_gpio_get_state;
 
 	sfp->sfp_bus = sfp_register_socket(sfp->dev, sfp, &sfp_module_ops);
 	if (!sfp->sfp_bus)
@@ -899,12 +942,6 @@ static int sfp_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static const struct of_device_id sfp_of_match[] = {
-	{ .compatible = "sff,sfp", },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, sfp_of_match);
-
 static struct platform_driver sfp_driver = {
 	.probe = sfp_probe,
 	.remove = sfp_remove,