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

Pull networking updates from David Millar:
 "Here are some highlights from the 2065 networking commits that
  happened this development cycle:

   1) XDP support for IXGBE (John Fastabend) and thunderx (Sunil Kowuri)

   2) Add a generic XDP driver, so that anyone can test XDP even if they
      lack a networking device whose driver has explicit XDP support
      (me).

   3) Sparc64 now has an eBPF JIT too (me)

   4) Add a BPF program testing framework via BPF_PROG_TEST_RUN (Alexei
      Starovoitov)

   5) Make netfitler network namespace teardown less expensive (Florian
      Westphal)

   6) Add symmetric hashing support to nft_hash (Laura Garcia Liebana)

   7) Implement NAPI and GRO in netvsc driver (Stephen Hemminger)

   8) Support TC flower offload statistics in mlxsw (Arkadi Sharshevsky)

   9) Multiqueue support in stmmac driver (Joao Pinto)

  10) Remove TCP timewait recycling, it never really could possibly work
      well in the real world and timestamp randomization really zaps any
      hint of usability this feature had (Soheil Hassas Yeganeh)

  11) Support level3 vs level4 ECMP route hashing in ipv4 (Nikolay
      Aleksandrov)

  12) Add socket busy poll support to epoll (Sridhar Samudrala)

  13) Netlink extended ACK support (Johannes Berg, Pablo Neira Ayuso,
      and several others)

  14) IPSEC hw offload infrastructure (Steffen Klassert)"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2065 commits)
  tipc: refactor function tipc_sk_recv_stream()
  tipc: refactor function tipc_sk_recvmsg()
  net: thunderx: Optimize page recycling for XDP
  net: thunderx: Support for XDP header adjustment
  net: thunderx: Add support for XDP_TX
  net: thunderx: Add support for XDP_DROP
  net: thunderx: Add basic XDP support
  net: thunderx: Cleanup receive buffer allocation
  net: thunderx: Optimize CQE_TX handling
  net: thunderx: Optimize RBDR descriptor handling
  net: thunderx: Support for page recycling
  ipx: call ipxitf_put() in ioctl error path
  net: sched: add helpers to handle extended actions
  qed*: Fix issues in the ptp filter config implementation.
  qede: Fix concurrency issue in PTP Tx path processing.
  stmmac: Add support for SIMATIC IOT2000 platform
  net: hns: fix ethtool_get_strings overflow in hns driver
  tcp: fix wraparound issue in tcp_lp
  bpf, arm64: fix jit branch offset related to ldimm64
  bpf, arm64: implement jiting of BPF_XADD
  ...

1 files changed, 81 insertions, 0 deletions

diff --git a/drivers/net/ethernet/apm/xgene-v2/ring.c b/drivers/net/ethernet/apm/xgene-v2/ring.c
new file mode 100644
index 0000000..3881082
--- /dev/null
+++ b/drivers/net/ethernet/apm/xgene-v2/ring.c
@@ -0,0 +1,81 @@
+/*
+ * Applied Micro X-Gene SoC Ethernet v2 Driver
+ *
+ * Copyright (c) 2017, Applied Micro Circuits Corporation
+ * Author(s): Iyappan Subramanian <isubramanian@apm.com>
+ *	      Keyur Chudgar <kchudgar@apm.com>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "main.h"
+
+/* create circular linked list of descriptors */
+void xge_setup_desc(struct xge_desc_ring *ring)
+{
+	struct xge_raw_desc *raw_desc;
+	dma_addr_t dma_h, next_dma;
+	u16 offset;
+	int i;
+
+	for (i = 0; i < XGENE_ENET_NUM_DESC; i++) {
+		raw_desc = &ring->raw_desc[i];
+
+		offset = (i + 1) & (XGENE_ENET_NUM_DESC - 1);
+		next_dma = ring->dma_addr + (offset * XGENE_ENET_DESC_SIZE);
+
+		raw_desc->m0 = cpu_to_le64(SET_BITS(E, 1) |
+					   SET_BITS(PKT_SIZE, SLOT_EMPTY));
+		dma_h = upper_32_bits(next_dma);
+		raw_desc->m1 = cpu_to_le64(SET_BITS(NEXT_DESC_ADDRL, next_dma) |
+					   SET_BITS(NEXT_DESC_ADDRH, dma_h));
+	}
+}
+
+void xge_update_tx_desc_addr(struct xge_pdata *pdata)
+{
+	struct xge_desc_ring *ring = pdata->tx_ring;
+	dma_addr_t dma_addr = ring->dma_addr;
+
+	xge_wr_csr(pdata, DMATXDESCL, dma_addr);
+	xge_wr_csr(pdata, DMATXDESCH, upper_32_bits(dma_addr));
+
+	ring->head = 0;
+	ring->tail = 0;
+}
+
+void xge_update_rx_desc_addr(struct xge_pdata *pdata)
+{
+	struct xge_desc_ring *ring = pdata->rx_ring;
+	dma_addr_t dma_addr = ring->dma_addr;
+
+	xge_wr_csr(pdata, DMARXDESCL, dma_addr);
+	xge_wr_csr(pdata, DMARXDESCH, upper_32_bits(dma_addr));
+
+	ring->head = 0;
+	ring->tail = 0;
+}
+
+void xge_intr_enable(struct xge_pdata *pdata)
+{
+	u32 data;
+
+	data = RX_PKT_RCVD | TX_PKT_SENT;
+	xge_wr_csr(pdata, DMAINTRMASK, data);
+}
+
+void xge_intr_disable(struct xge_pdata *pdata)
+{
+	xge_wr_csr(pdata, DMAINTRMASK, 0);
+}