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, 46 insertions, 11 deletions

diff --git a/net/6lowpan/iphc.c b/net/6lowpan/iphc.c
index 79f1fa22509a..6b1042e21656 100644
--- a/net/6lowpan/iphc.c
+++ b/net/6lowpan/iphc.c
@@ -278,6 +278,23 @@ lowpan_iphc_ctx_get_by_mcast_addr(const struct net_device *dev,
 	return ret;
 }
 
+static void lowpan_iphc_uncompress_lladdr(const struct net_device *dev,
+					  struct in6_addr *ipaddr,
+					  const void *lladdr)
+{
+	switch (dev->addr_len) {
+	case ETH_ALEN:
+		lowpan_iphc_uncompress_eui48_lladdr(ipaddr, lladdr);
+		break;
+	case EUI64_ADDR_LEN:
+		lowpan_iphc_uncompress_eui64_lladdr(ipaddr, lladdr);
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		break;
+	}
+}
+
 /* Uncompress address function for source and
  * destination address(non-multicast).
  *
@@ -320,7 +337,7 @@ static int lowpan_iphc_uncompress_addr(struct sk_buff *skb,
 			lowpan_iphc_uncompress_802154_lladdr(ipaddr, lladdr);
 			break;
 		default:
-			lowpan_iphc_uncompress_eui64_lladdr(ipaddr, lladdr);
+			lowpan_iphc_uncompress_lladdr(dev, ipaddr, lladdr);
 			break;
 		}
 		break;
@@ -381,7 +398,7 @@ static int lowpan_iphc_uncompress_ctx_addr(struct sk_buff *skb,
 			lowpan_iphc_uncompress_802154_lladdr(ipaddr, lladdr);
 			break;
 		default:
-			lowpan_iphc_uncompress_eui64_lladdr(ipaddr, lladdr);
+			lowpan_iphc_uncompress_lladdr(dev, ipaddr, lladdr);
 			break;
 		}
 		ipv6_addr_prefix_copy(ipaddr, &ctx->pfx, ctx->plen);
@@ -666,6 +683,8 @@ int lowpan_header_decompress(struct sk_buff *skb, const struct net_device *dev,
 
 	switch (iphc1 & (LOWPAN_IPHC_M | LOWPAN_IPHC_DAC)) {
 	case LOWPAN_IPHC_M | LOWPAN_IPHC_DAC:
+		skb->pkt_type = PACKET_BROADCAST;
+
 		spin_lock_bh(&lowpan_dev(dev)->ctx.lock);
 		ci = lowpan_iphc_ctx_get_by_id(dev, LOWPAN_IPHC_CID_DCI(cid));
 		if (!ci) {
@@ -681,11 +700,15 @@ int lowpan_header_decompress(struct sk_buff *skb, const struct net_device *dev,
 		spin_unlock_bh(&lowpan_dev(dev)->ctx.lock);
 		break;
 	case LOWPAN_IPHC_M:
+		skb->pkt_type = PACKET_BROADCAST;
+
 		/* multicast */
 		err = lowpan_uncompress_multicast_daddr(skb, &hdr.daddr,
 							iphc1 & LOWPAN_IPHC_DAM_MASK);
 		break;
 	case LOWPAN_IPHC_DAC:
+		skb->pkt_type = PACKET_HOST;
+
 		spin_lock_bh(&lowpan_dev(dev)->ctx.lock);
 		ci = lowpan_iphc_ctx_get_by_id(dev, LOWPAN_IPHC_CID_DCI(cid));
 		if (!ci) {
@@ -701,6 +724,8 @@ int lowpan_header_decompress(struct sk_buff *skb, const struct net_device *dev,
 		spin_unlock_bh(&lowpan_dev(dev)->ctx.lock);
 		break;
 	default:
+		skb->pkt_type = PACKET_HOST;
+
 		err = lowpan_iphc_uncompress_addr(skb, dev, &hdr.daddr,
 						  iphc1 & LOWPAN_IPHC_DAM_MASK,
 						  daddr);
@@ -802,6 +827,21 @@ lowpan_iphc_compress_ctx_802154_lladdr(const struct in6_addr *ipaddr,
 	return lladdr_compress;
 }
 
+static bool lowpan_iphc_addr_equal(const struct net_device *dev,
+				   const struct lowpan_iphc_ctx *ctx,
+				   const struct in6_addr *ipaddr,
+				   const void *lladdr)
+{
+	struct in6_addr tmp = {};
+
+	lowpan_iphc_uncompress_lladdr(dev, &tmp, lladdr);
+
+	if (ctx)
+		ipv6_addr_prefix_copy(&tmp, &ctx->pfx, ctx->plen);
+
+	return ipv6_addr_equal(&tmp, ipaddr);
+}
+
 static u8 lowpan_compress_ctx_addr(u8 **hc_ptr, const struct net_device *dev,
 				   const struct in6_addr *ipaddr,
 				   const struct lowpan_iphc_ctx *ctx,
@@ -819,13 +859,7 @@ static u8 lowpan_compress_ctx_addr(u8 **hc_ptr, const struct net_device *dev,
 		}
 		break;
 	default:
-		/* check for SAM/DAM = 11 */
-		memcpy(&tmp.s6_addr[8], lladdr, EUI64_ADDR_LEN);
-		/* second bit-flip (Universe/Local) is done according RFC2464 */
-		tmp.s6_addr[8] ^= 0x02;
-		/* context information are always used */
-		ipv6_addr_prefix_copy(&tmp, &ctx->pfx, ctx->plen);
-		if (ipv6_addr_equal(&tmp, ipaddr)) {
+		if (lowpan_iphc_addr_equal(dev, ctx, ipaddr, lladdr)) {
 			dam = LOWPAN_IPHC_DAM_11;
 			goto out;
 		}
@@ -921,11 +955,12 @@ static u8 lowpan_compress_addr_64(u8 **hc_ptr, const struct net_device *dev,
 		}
 		break;
 	default:
-		if (is_addr_mac_addr_based(ipaddr, lladdr)) {
-			dam = LOWPAN_IPHC_DAM_11; /* 0-bits */
+		if (lowpan_iphc_addr_equal(dev, NULL, ipaddr, lladdr)) {
+			dam = LOWPAN_IPHC_DAM_11;
 			pr_debug("address compression 0 bits\n");
 			goto out;
 		}
+
 		break;
 	}