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

Pull networking updates from David Miller:
 "Reasonably busy this cycle, but perhaps not as busy as in the 4.12
  merge window:

   1) Several optimizations for UDP processing under high load from
      Paolo Abeni.

   2) Support pacing internally in TCP when using the sch_fq packet
      scheduler for this is not practical. From Eric Dumazet.

   3) Support mutliple filter chains per qdisc, from Jiri Pirko.

   4) Move to 1ms TCP timestamp clock, from Eric Dumazet.

   5) Add batch dequeueing to vhost_net, from Jason Wang.

   6) Flesh out more completely SCTP checksum offload support, from
      Davide Caratti.

   7) More plumbing of extended netlink ACKs, from David Ahern, Pablo
      Neira Ayuso, and Matthias Schiffer.

   8) Add devlink support to nfp driver, from Simon Horman.

   9) Add RTM_F_FIB_MATCH flag to RTM_GETROUTE queries, from Roopa
      Prabhu.

  10) Add stack depth tracking to BPF verifier and use this information
      in the various eBPF JITs. From Alexei Starovoitov.

  11) Support XDP on qed device VFs, from Yuval Mintz.

  12) Introduce BPF PROG ID for better introspection of installed BPF
      programs. From Martin KaFai Lau.

  13) Add bpf_set_hash helper for TC bpf programs, from Daniel Borkmann.

  14) For loads, allow narrower accesses in bpf verifier checking, from
      Yonghong Song.

  15) Support MIPS in the BPF selftests and samples infrastructure, the
      MIPS eBPF JIT will be merged in via the MIPS GIT tree. From David
      Daney.

  16) Support kernel based TLS, from Dave Watson and others.

  17) Remove completely DST garbage collection, from Wei Wang.

  18) Allow installing TCP MD5 rules using prefixes, from Ivan
      Delalande.

  19) Add XDP support to Intel i40e driver, from Björn Töpel

  20) Add support for TC flower offload in nfp driver, from Simon
      Horman, Pieter Jansen van Vuuren, Benjamin LaHaise, Jakub
      Kicinski, and Bert van Leeuwen.

  21) IPSEC offloading support in mlx5, from Ilan Tayari.

  22) Add HW PTP support to macb driver, from Rafal Ozieblo.

  23) Networking refcount_t conversions, From Elena Reshetova.

  24) Add sock_ops support to BPF, from Lawrence Brako. This is useful
      for tuning the TCP sockopt settings of a group of applications,
      currently via CGROUPs"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1899 commits)
  net: phy: dp83867: add workaround for incorrect RX_CTRL pin strap
  dt-bindings: phy: dp83867: provide a workaround for incorrect RX_CTRL pin strap
  cxgb4: Support for get_ts_info ethtool method
  cxgb4: Add PTP Hardware Clock (PHC) support
  cxgb4: time stamping interface for PTP
  nfp: default to chained metadata prepend format
  nfp: remove legacy MAC address lookup
  nfp: improve order of interfaces in breakout mode
  net: macb: remove extraneous return when MACB_EXT_DESC is defined
  bpf: add missing break in for the TCP_BPF_SNDCWND_CLAMP case
  bpf: fix return in load_bpf_file
  mpls: fix rtm policy in mpls_getroute
  net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t
  net, ax25: convert ax25_route.refcount from atomic_t to refcount_t
  net, ax25: convert ax25_uid_assoc.refcount from atomic_t to refcount_t
  net, sctp: convert sctp_ep_common.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_transport.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_chunk.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_datamsg.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_auth_bytes.refcnt from atomic_t to refcount_t
  ...

1 files changed, 126 insertions, 0 deletions

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_app.c b/drivers/net/ethernet/netronome/nfp/nfp_app.c
new file mode 100644
index 000000000000..c704c022574f
--- /dev/null
+++ b/drivers/net/ethernet/netronome/nfp/nfp_app.c
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2017 Netronome Systems, Inc.
+ *
+ * This software is dual licensed under the GNU General License Version 2,
+ * June 1991 as shown in the file COPYING in the top-level directory of this
+ * source tree or the BSD 2-Clause License provided below.  You have the
+ * option to license this software under the complete terms of either license.
+ *
+ * The BSD 2-Clause License:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      1. Redistributions of source code must retain the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer.
+ *
+ *      2. Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials
+ *         provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+
+#include "nfpcore/nfp_cpp.h"
+#include "nfpcore/nfp_nffw.h"
+#include "nfp_app.h"
+#include "nfp_main.h"
+#include "nfp_net_repr.h"
+
+static const struct nfp_app_type *apps[] = {
+	&app_nic,
+	&app_bpf,
+#ifdef CONFIG_NFP_APP_FLOWER
+	&app_flower,
+#endif
+};
+
+const char *nfp_app_mip_name(struct nfp_app *app)
+{
+	if (!app || !app->pf->mip)
+		return "";
+	return nfp_mip_name(app->pf->mip);
+}
+
+struct sk_buff *
+nfp_app_ctrl_msg_alloc(struct nfp_app *app, unsigned int size, gfp_t priority)
+{
+	struct sk_buff *skb;
+
+	if (nfp_app_ctrl_has_meta(app))
+		size += 8;
+
+	skb = alloc_skb(size, priority);
+	if (!skb)
+		return NULL;
+
+	if (nfp_app_ctrl_has_meta(app))
+		skb_reserve(skb, 8);
+
+	return skb;
+}
+
+struct nfp_reprs *
+nfp_app_reprs_set(struct nfp_app *app, enum nfp_repr_type type,
+		  struct nfp_reprs *reprs)
+{
+	struct nfp_reprs *old;
+
+	old = rcu_dereference_protected(app->reprs[type],
+					lockdep_is_held(&app->pf->lock));
+	if (reprs && old) {
+		old = ERR_PTR(-EBUSY);
+		goto exit_unlock;
+	}
+
+	rcu_assign_pointer(app->reprs[type], reprs);
+
+exit_unlock:
+	return old;
+}
+
+struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id)
+{
+	struct nfp_app *app;
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(apps); i++)
+		if (apps[i]->id == id)
+			break;
+	if (i == ARRAY_SIZE(apps)) {
+		nfp_err(pf->cpp, "failed to find app with ID 0x%02hhx\n", id);
+		return ERR_PTR(-EINVAL);
+	}
+
+	if (WARN_ON(!apps[i]->name || !apps[i]->vnic_init))
+		return ERR_PTR(-EINVAL);
+
+	app = kzalloc(sizeof(*app), GFP_KERNEL);
+	if (!app)
+		return ERR_PTR(-ENOMEM);
+
+	app->pf = pf;
+	app->cpp = pf->cpp;
+	app->pdev = pf->pdev;
+	app->type = apps[i];
+
+	return app;
+}
+
+void nfp_app_free(struct nfp_app *app)
+{
+	kfree(app);
+}