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

Pull networking updates from David Miller:

 1) New ipset extensions for matching on destination MAC addresses, from
    Stefano Brivio.

 2) Add ipv4 ttl and tos, plus ipv6 flow label and hop limit offloads to
    nfp driver. From Stefano Brivio.

 3) Implement GRO for plain UDP sockets, from Paolo Abeni.

 4) Lots of work from Michał Mirosław to eliminate the VLAN_TAG_PRESENT
    bit so that we could support the entire vlan_tci value.

 5) Rework the IPSEC policy lookups to better optimize more usecases,
    from Florian Westphal.

 6) Infrastructure changes eliminating direct manipulation of SKB lists
    wherever possible, and to always use the appropriate SKB list
    helpers. This work is still ongoing...

 7) Lots of PHY driver and state machine improvements and
    simplifications, from Heiner Kallweit.

 8) Various TSO deferral refinements, from Eric Dumazet.

 9) Add ntuple filter support to aquantia driver, from Dmitry Bogdanov.

10) Batch dropping of XDP packets in tuntap, from Jason Wang.

11) Lots of cleanups and improvements to the r8169 driver from Heiner
    Kallweit, including support for ->xmit_more. This driver has been
    getting some much needed love since he started working on it.

12) Lots of new forwarding selftests from Petr Machata.

13) Enable VXLAN learning in mlxsw driver, from Ido Schimmel.

14) Packed ring support for virtio, from Tiwei Bie.

15) Add new Aquantia AQtion USB driver, from Dmitry Bezrukov.

16) Add XDP support to dpaa2-eth driver, from Ioana Ciocoi Radulescu.

17) Implement coalescing on TCP backlog queue, from Eric Dumazet.

18) Implement carrier change in tun driver, from Nicolas Dichtel.

19) Support msg_zerocopy in UDP, from Willem de Bruijn.

20) Significantly improve garbage collection of neighbor objects when
    the table has many PERMANENT entries, from David Ahern.

21) Remove egdev usage from nfp and mlx5, and remove the facility
    completely from the tree as it no longer has any users. From Oz
    Shlomo and others.

22) Add a NETDEV_PRE_CHANGEADDR so that drivers can veto the change and
    therefore abort the operation before the commit phase (which is the
    NETDEV_CHANGEADDR event). From Petr Machata.

23) Add indirect call wrappers to avoid retpoline overhead, and use them
    in the GRO code paths. From Paolo Abeni.

24) Add support for netlink FDB get operations, from Roopa Prabhu.

25) Support bloom filter in mlxsw driver, from Nir Dotan.

26) Add SKB extension infrastructure. This consolidates the handling of
    the auxiliary SKB data used by IPSEC and bridge netfilter, and is
    designed to support the needs to MPTCP which could be integrated in
    the future.

27) Lots of XDP TX optimizations in mlx5 from Tariq Toukan.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1845 commits)
  net: dccp: fix kernel crash on module load
  drivers/net: appletalk/cops: remove redundant if statement and mask
  bnx2x: Fix NULL pointer dereference in bnx2x_del_all_vlans() on some hw
  net/net_namespace: Check the return value of register_pernet_subsys()
  net/netlink_compat: Fix a missing check of nla_parse_nested
  ieee802154: lowpan_header_create check must check daddr
  net/mlx4_core: drop useless LIST_HEAD
  mlxsw: spectrum: drop useless LIST_HEAD
  net/mlx5e: drop useless LIST_HEAD
  iptunnel: Set tun_flags in the iptunnel_metadata_reply from src
  net/mlx5e: fix semicolon.cocci warnings
  staging: octeon: fix build failure with XFRM enabled
  net: Revert recent Spectre-v1 patches.
  can: af_can: Fix Spectre v1 vulnerability
  packet: validate address length if non-zero
  nfc: af_nfc: Fix Spectre v1 vulnerability
  phonet: af_phonet: Fix Spectre v1 vulnerability
  net: core: Fix Spectre v1 vulnerability
  net: minor cleanup in skb_ext_add()
  net: drop the unused helper skb_ext_get()
  ...

4 files changed, 249 insertions, 8 deletions

diff --git a/drivers/soc/fsl/dpio/dpio-service.c b/drivers/soc/fsl/dpio/dpio-service.c
index 321a92613a7e..ec0837ff039a 100644
--- a/drivers/soc/fsl/dpio/dpio-service.c
+++ b/drivers/soc/fsl/dpio/dpio-service.c
@@ -601,3 +601,71 @@ struct dpaa2_dq *dpaa2_io_store_next(struct dpaa2_io_store *s, int *is_last)
 	return ret;
 }
 EXPORT_SYMBOL_GPL(dpaa2_io_store_next);
+
+/**
+ * dpaa2_io_query_fq_count() - Get the frame and byte count for a given fq.
+ * @d: the given DPIO object.
+ * @fqid: the id of frame queue to be queried.
+ * @fcnt: the queried frame count.
+ * @bcnt: the queried byte count.
+ *
+ * Knowing the FQ count at run-time can be useful in debugging situations.
+ * The instantaneous frame- and byte-count are hereby returned.
+ *
+ * Return 0 for a successful query, and negative error code if query fails.
+ */
+int dpaa2_io_query_fq_count(struct dpaa2_io *d, u32 fqid,
+			    u32 *fcnt, u32 *bcnt)
+{
+	struct qbman_fq_query_np_rslt state;
+	struct qbman_swp *swp;
+	unsigned long irqflags;
+	int ret;
+
+	d = service_select(d);
+	if (!d)
+		return -ENODEV;
+
+	swp = d->swp;
+	spin_lock_irqsave(&d->lock_mgmt_cmd, irqflags);
+	ret = qbman_fq_query_state(swp, fqid, &state);
+	spin_unlock_irqrestore(&d->lock_mgmt_cmd, irqflags);
+	if (ret)
+		return ret;
+	*fcnt = qbman_fq_state_frame_count(&state);
+	*bcnt = qbman_fq_state_byte_count(&state);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dpaa2_io_query_fq_count);
+
+/**
+ * dpaa2_io_query_bp_count() - Query the number of buffers currently in a
+ * buffer pool.
+ * @d: the given DPIO object.
+ * @bpid: the index of buffer pool to be queried.
+ * @num: the queried number of buffers in the buffer pool.
+ *
+ * Return 0 for a successful query, and negative error code if query fails.
+ */
+int dpaa2_io_query_bp_count(struct dpaa2_io *d, u16 bpid, u32 *num)
+{
+	struct qbman_bp_query_rslt state;
+	struct qbman_swp *swp;
+	unsigned long irqflags;
+	int ret;
+
+	d = service_select(d);
+	if (!d)
+		return -ENODEV;
+
+	swp = d->swp;
+	spin_lock_irqsave(&d->lock_mgmt_cmd, irqflags);
+	ret = qbman_bp_query(swp, bpid, &state);
+	spin_unlock_irqrestore(&d->lock_mgmt_cmd, irqflags);
+	if (ret)
+		return ret;
+	*num = qbman_bp_info_num_free_bufs(&state);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dpaa2_io_query_bp_count);
diff --git a/drivers/soc/fsl/dpio/qbman-portal.c b/drivers/soc/fsl/dpio/qbman-portal.c
index cf1d448ea468..0bddb85c0ae5 100644
--- a/drivers/soc/fsl/dpio/qbman-portal.c
+++ b/drivers/soc/fsl/dpio/qbman-portal.c
@@ -1003,3 +1003,99 @@ int qbman_swp_CDAN_set(struct qbman_swp *s, u16 channelid,
 
 	return 0;
 }
+
+#define QBMAN_RESPONSE_VERB_MASK	0x7f
+#define QBMAN_FQ_QUERY_NP		0x45
+#define QBMAN_BP_QUERY			0x32
+
+struct qbman_fq_query_desc {
+	u8 verb;
+	u8 reserved[3];
+	__le32 fqid;
+	u8 reserved2[56];
+};
+
+int qbman_fq_query_state(struct qbman_swp *s, u32 fqid,
+			 struct qbman_fq_query_np_rslt *r)
+{
+	struct qbman_fq_query_desc *p;
+	void *resp;
+
+	p = (struct qbman_fq_query_desc *)qbman_swp_mc_start(s);
+	if (!p)
+		return -EBUSY;
+
+	/* FQID is a 24 bit value */
+	p->fqid = cpu_to_le32(fqid & 0x00FFFFFF);
+	resp = qbman_swp_mc_complete(s, p, QBMAN_FQ_QUERY_NP);
+	if (!resp) {
+		pr_err("qbman: Query FQID %d NP fields failed, no response\n",
+		       fqid);
+		return -EIO;
+	}
+	*r = *(struct qbman_fq_query_np_rslt *)resp;
+	/* Decode the outcome */
+	WARN_ON((r->verb & QBMAN_RESPONSE_VERB_MASK) != QBMAN_FQ_QUERY_NP);
+
+	/* Determine success or failure */
+	if (r->rslt != QBMAN_MC_RSLT_OK) {
+		pr_err("Query NP fields of FQID 0x%x failed, code=0x%02x\n",
+		       p->fqid, r->rslt);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+u32 qbman_fq_state_frame_count(const struct qbman_fq_query_np_rslt *r)
+{
+	return (le32_to_cpu(r->frm_cnt) & 0x00FFFFFF);
+}
+
+u32 qbman_fq_state_byte_count(const struct qbman_fq_query_np_rslt *r)
+{
+	return le32_to_cpu(r->byte_cnt);
+}
+
+struct qbman_bp_query_desc {
+	u8 verb;
+	u8 reserved;
+	__le16 bpid;
+	u8 reserved2[60];
+};
+
+int qbman_bp_query(struct qbman_swp *s, u16 bpid,
+		   struct qbman_bp_query_rslt *r)
+{
+	struct qbman_bp_query_desc *p;
+	void *resp;
+
+	p = (struct qbman_bp_query_desc *)qbman_swp_mc_start(s);
+	if (!p)
+		return -EBUSY;
+
+	p->bpid = cpu_to_le16(bpid);
+	resp = qbman_swp_mc_complete(s, p, QBMAN_BP_QUERY);
+	if (!resp) {
+		pr_err("qbman: Query BPID %d fields failed, no response\n",
+		       bpid);
+		return -EIO;
+	}
+	*r = *(struct qbman_bp_query_rslt *)resp;
+	/* Decode the outcome */
+	WARN_ON((r->verb & QBMAN_RESPONSE_VERB_MASK) != QBMAN_BP_QUERY);
+
+	/* Determine success or failure */
+	if (r->rslt != QBMAN_MC_RSLT_OK) {
+		pr_err("Query fields of BPID 0x%x failed, code=0x%02x\n",
+		       bpid, r->rslt);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+u32 qbman_bp_info_num_free_bufs(struct qbman_bp_query_rslt *a)
+{
+	return le32_to_cpu(a->fill);
+}
diff --git a/drivers/soc/fsl/dpio/qbman-portal.h b/drivers/soc/fsl/dpio/qbman-portal.h
index 89d1dd9969b6..fa35fc1afeaa 100644
--- a/drivers/soc/fsl/dpio/qbman-portal.h
+++ b/drivers/soc/fsl/dpio/qbman-portal.h
@@ -441,4 +441,62 @@ static inline void *qbman_swp_mc_complete(struct qbman_swp *swp, void *cmd,
 	return cmd;
 }
 
+/* Query APIs */
+struct qbman_fq_query_np_rslt {
+	u8 verb;
+	u8 rslt;
+	u8 st1;
+	u8 st2;
+	u8 reserved[2];
+	__le16 od1_sfdr;
+	__le16 od2_sfdr;
+	__le16 od3_sfdr;
+	__le16 ra1_sfdr;
+	__le16 ra2_sfdr;
+	__le32 pfdr_hptr;
+	__le32 pfdr_tptr;
+	__le32 frm_cnt;
+	__le32 byte_cnt;
+	__le16 ics_surp;
+	u8 is;
+	u8 reserved2[29];
+};
+
+int qbman_fq_query_state(struct qbman_swp *s, u32 fqid,
+			 struct qbman_fq_query_np_rslt *r);
+u32 qbman_fq_state_frame_count(const struct qbman_fq_query_np_rslt *r);
+u32 qbman_fq_state_byte_count(const struct qbman_fq_query_np_rslt *r);
+
+struct qbman_bp_query_rslt {
+	u8 verb;
+	u8 rslt;
+	u8 reserved[4];
+	u8 bdi;
+	u8 state;
+	__le32 fill;
+	__le32 hdotr;
+	__le16 swdet;
+	__le16 swdxt;
+	__le16 hwdet;
+	__le16 hwdxt;
+	__le16 swset;
+	__le16 swsxt;
+	__le16 vbpid;
+	__le16 icid;
+	__le64 bpscn_addr;
+	__le64 bpscn_ctx;
+	__le16 hw_targ;
+	u8 dbe;
+	u8 reserved2;
+	u8 sdcnt;
+	u8 hdcnt;
+	u8 sscnt;
+	u8 reserved3[9];
+};
+
+int qbman_bp_query(struct qbman_swp *s, u16 bpid,
+		   struct qbman_bp_query_rslt *r);
+
+u32 qbman_bp_info_num_free_bufs(struct qbman_bp_query_rslt *a);
+
 #endif /* __FSL_QBMAN_PORTAL_H */
diff --git a/drivers/soc/fsl/qbman/qman.c b/drivers/soc/fsl/qbman/qman.c
index 5ce24718c2fd..52c153cd795a 100644
--- a/drivers/soc/fsl/qbman/qman.c
+++ b/drivers/soc/fsl/qbman/qman.c
@@ -36,6 +36,8 @@
 #define MAX_IRQNAME	16	/* big enough for "QMan portal %d" */
 #define QMAN_POLL_LIMIT 32
 #define QMAN_PIRQ_DQRR_ITHRESH 12
+#define QMAN_DQRR_IT_MAX 15
+#define QMAN_ITP_MAX 0xFFF
 #define QMAN_PIRQ_MR_ITHRESH 4
 #define QMAN_PIRQ_IPERIOD 100
 
@@ -727,9 +729,15 @@ static inline void qm_dqrr_vdqcr_set(struct qm_portal *portal, u32 vdqcr)
 	qm_out(portal, QM_REG_DQRR_VDQCR, vdqcr);
 }
 
-static inline void qm_dqrr_set_ithresh(struct qm_portal *portal, u8 ithresh)
+static inline int qm_dqrr_set_ithresh(struct qm_portal *portal, u8 ithresh)
 {
+
+	if (ithresh > QMAN_DQRR_IT_MAX)
+		return -EINVAL;
+
 	qm_out(portal, QM_REG_DQRR_ITR, ithresh);
+
+	return 0;
 }
 
 /* --- MR API --- */
@@ -1012,20 +1020,27 @@ static inline void put_affine_portal(void)
 
 static struct workqueue_struct *qm_portal_wq;
 
-void qman_dqrr_set_ithresh(struct qman_portal *portal, u8 ithresh)
+int qman_dqrr_set_ithresh(struct qman_portal *portal, u8 ithresh)
 {
+	int res;
+
 	if (!portal)
-		return;
+		return -EINVAL;
+
+	res = qm_dqrr_set_ithresh(&portal->p, ithresh);
+	if (res)
+		return res;
 
-	qm_dqrr_set_ithresh(&portal->p, ithresh);
 	portal->p.dqrr.ithresh = ithresh;
+
+	return 0;
 }
 EXPORT_SYMBOL(qman_dqrr_set_ithresh);
 
 void qman_dqrr_get_ithresh(struct qman_portal *portal, u8 *ithresh)
 {
 	if (portal && ithresh)
-		*ithresh = portal->p.dqrr.ithresh;
+		*ithresh = qm_in(&portal->p, QM_REG_DQRR_ITR);
 }
 EXPORT_SYMBOL(qman_dqrr_get_ithresh);
 
@@ -1036,10 +1051,14 @@ void qman_portal_get_iperiod(struct qman_portal *portal, u32 *iperiod)
 }
 EXPORT_SYMBOL(qman_portal_get_iperiod);
 
-void qman_portal_set_iperiod(struct qman_portal *portal, u32 iperiod)
+int qman_portal_set_iperiod(struct qman_portal *portal, u32 iperiod)
 {
-	if (portal)
-		qm_out(&portal->p, QM_REG_ITPR, iperiod);
+	if (!portal || iperiod > QMAN_ITP_MAX)
+		return -EINVAL;
+
+	qm_out(&portal->p, QM_REG_ITPR, iperiod);
+
+	return 0;
 }
 EXPORT_SYMBOL(qman_portal_set_iperiod);