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, 76 insertions, 35 deletions

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index 99b0487..c0fd351 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -293,9 +293,15 @@ int nfp_net_reconfig(struct nfp_net *nn, u32 update)
  */
 static int nfp_net_reconfig_mbox(struct nfp_net *nn, u32 mbox_cmd)
 {
+	u32 mbox = nn->tlv_caps.mbox_off;
 	int ret;
 
-	nn_writeq(nn, NFP_NET_CFG_MBOX_CMD, mbox_cmd);
+	if (!nfp_net_has_mbox(&nn->tlv_caps)) {
+		nn_err(nn, "no mailbox present, command: %u\n", mbox_cmd);
+		return -EIO;
+	}
+
+	nn_writeq(nn, mbox + NFP_NET_CFG_MBOX_SIMPLE_CMD, mbox_cmd);
 
 	ret = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_MBOX);
 	if (ret) {
@@ -303,7 +309,7 @@ static int nfp_net_reconfig_mbox(struct nfp_net *nn, u32 mbox_cmd)
 		return ret;
 	}
 
-	return -nn_readl(nn, NFP_NET_CFG_MBOX_RET);
+	return -nn_readl(nn, mbox + NFP_NET_CFG_MBOX_SIMPLE_RET);
 }
 
 /* Interrupt configuration and handling
@@ -1610,11 +1616,13 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
 	unsigned int true_bufsz;
 	struct sk_buff *skb;
 	int pkts_polled = 0;
+	struct xdp_buff xdp;
 	int idx;
 
 	rcu_read_lock();
 	xdp_prog = READ_ONCE(dp->xdp_prog);
 	true_bufsz = xdp_prog ? PAGE_SIZE : dp->fl_bufsz;
+	xdp.rxq = &rx_ring->xdp_rxq;
 	tx_ring = r_vec->xdp_ring;
 
 	while (pkts_polled < budget) {
@@ -1705,7 +1713,6 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
 				  dp->bpf_offload_xdp) && !meta.portid) {
 			void *orig_data = rxbuf->frag + pkt_off;
 			unsigned int dma_off;
-			struct xdp_buff xdp;
 			int act;
 
 			xdp.data_hard_start = rxbuf->frag + NFP_NET_RX_BUF_HEADROOM;
@@ -1919,6 +1926,13 @@ err_free:
 	return false;
 }
 
+bool __nfp_ctrl_tx(struct nfp_net *nn, struct sk_buff *skb)
+{
+	struct nfp_net_r_vector *r_vec = &nn->r_vecs[0];
+
+	return nfp_ctrl_tx_one(nn, r_vec, skb, false);
+}
+
 bool nfp_ctrl_tx(struct nfp_net *nn, struct sk_buff *skb)
 {
 	struct nfp_net_r_vector *r_vec = &nn->r_vecs[0];
@@ -2254,6 +2268,8 @@ static void nfp_net_rx_ring_free(struct nfp_net_rx_ring *rx_ring)
 	struct nfp_net_r_vector *r_vec = rx_ring->r_vec;
 	struct nfp_net_dp *dp = &r_vec->nfp_net->dp;
 
+	if (dp->netdev)
+		xdp_rxq_info_unreg(&rx_ring->xdp_rxq);
 	kfree(rx_ring->rxbufs);
 
 	if (rx_ring->rxds)
@@ -2277,7 +2293,14 @@ static void nfp_net_rx_ring_free(struct nfp_net_rx_ring *rx_ring)
 static int
 nfp_net_rx_ring_alloc(struct nfp_net_dp *dp, struct nfp_net_rx_ring *rx_ring)
 {
-	int sz;
+	int sz, err;
+
+	if (dp->netdev) {
+		err = xdp_rxq_info_reg(&rx_ring->xdp_rxq, dp->netdev,
+				       rx_ring->idx);
+		if (err < 0)
+			return err;
+	}
 
 	rx_ring->cnt = dp->rxd_cnt;
 	rx_ring->size = sizeof(*rx_ring->rxds) * rx_ring->cnt;
@@ -2441,7 +2464,7 @@ void nfp_net_coalesce_write_cfg(struct nfp_net *nn)
 	 * ME timestamp ticks.  There are 16 ME clock cycles for each timestamp
 	 * count.
 	 */
-	factor = nn->me_freq_mhz / 16;
+	factor = nn->tlv_caps.me_freq_mhz / 16;
 
 	/* copy RX interrupt coalesce parameters */
 	value = (nn->rx_coalesce_max_frames << 16) |
@@ -2852,6 +2875,11 @@ static void nfp_net_set_rx_mode(struct net_device *netdev)
 
 	new_ctrl = nn->dp.ctrl;
 
+	if (!netdev_mc_empty(netdev) || netdev->flags & IFF_ALLMULTI)
+		new_ctrl |= nn->cap & NFP_NET_CFG_CTRL_L2MC;
+	else
+		new_ctrl &= ~NFP_NET_CFG_CTRL_L2MC;
+
 	if (netdev->flags & IFF_PROMISC) {
 		if (nn->cap & NFP_NET_CFG_CTRL_PROMISC)
 			new_ctrl |= NFP_NET_CFG_CTRL_PROMISC;
@@ -3036,6 +3064,11 @@ static int nfp_net_change_mtu(struct net_device *netdev, int new_mtu)
 {
 	struct nfp_net *nn = netdev_priv(netdev);
 	struct nfp_net_dp *dp;
+	int err;
+
+	err = nfp_app_change_mtu(nn->app, netdev, new_mtu);
+	if (err)
+		return err;
 
 	dp = nfp_net_clone_dp(nn);
 	if (!dp)
@@ -3057,8 +3090,9 @@ nfp_net_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
 	if (!vid)
 		return 0;
 
-	nn_writew(nn, NFP_NET_CFG_VLAN_FILTER_VID, vid);
-	nn_writew(nn, NFP_NET_CFG_VLAN_FILTER_PROTO, ETH_P_8021Q);
+	nn_writew(nn, nn->tlv_caps.mbox_off + NFP_NET_CFG_VLAN_FILTER_VID, vid);
+	nn_writew(nn, nn->tlv_caps.mbox_off + NFP_NET_CFG_VLAN_FILTER_PROTO,
+		  ETH_P_8021Q);
 
 	return nfp_net_reconfig_mbox(nn, NFP_NET_CFG_MBOX_CMD_CTAG_FILTER_ADD);
 }
@@ -3074,8 +3108,9 @@ nfp_net_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid)
 	if (!vid)
 		return 0;
 
-	nn_writew(nn, NFP_NET_CFG_VLAN_FILTER_VID, vid);
-	nn_writew(nn, NFP_NET_CFG_VLAN_FILTER_PROTO, ETH_P_8021Q);
+	nn_writew(nn, nn->tlv_caps.mbox_off + NFP_NET_CFG_VLAN_FILTER_VID, vid);
+	nn_writew(nn, nn->tlv_caps.mbox_off + NFP_NET_CFG_VLAN_FILTER_PROTO,
+		  ETH_P_8021Q);
 
 	return nfp_net_reconfig_mbox(nn, NFP_NET_CFG_MBOX_CMD_CTAG_FILTER_KILL);
 }
@@ -3368,7 +3403,7 @@ nfp_net_xdp_setup(struct nfp_net *nn, struct bpf_prog *prog, u32 flags,
 	if (err)
 		return err;
 
-	err = nfp_app_xdp_offload(nn->app, nn, offload_prog);
+	err = nfp_app_xdp_offload(nn->app, nn, offload_prog, extack);
 	if (err && flags & XDP_FLAGS_HW_MODE)
 		return err;
 
@@ -3394,17 +3429,10 @@ static int nfp_net_xdp(struct net_device *netdev, struct netdev_bpf *xdp)
 		if (nn->dp.bpf_offload_xdp)
 			xdp->prog_attached = XDP_ATTACHED_HW;
 		xdp->prog_id = nn->xdp_prog ? nn->xdp_prog->aux->id : 0;
+		xdp->prog_flags = nn->xdp_prog ? nn->xdp_flags : 0;
 		return 0;
-	case BPF_OFFLOAD_VERIFIER_PREP:
-		return nfp_app_bpf_verifier_prep(nn->app, nn, xdp);
-	case BPF_OFFLOAD_TRANSLATE:
-		return nfp_app_bpf_translate(nn->app, nn,
-					     xdp->offload.prog);
-	case BPF_OFFLOAD_DESTROY:
-		return nfp_app_bpf_destroy(nn->app, nn,
-					   xdp->offload.prog);
 	default:
-		return -EINVAL;
+		return nfp_app_bpf(nn->app, nn, xdp);
 	}
 }
 
@@ -3563,9 +3591,6 @@ struct nfp_net *nfp_net_alloc(struct pci_dev *pdev, bool needs_netdev,
  */
 void nfp_net_free(struct nfp_net *nn)
 {
-	if (nn->xdp_prog)
-		bpf_prog_put(nn->xdp_prog);
-
 	if (nn->dp.netdev)
 		free_netdev(nn->dp.netdev);
 	else
@@ -3731,18 +3756,8 @@ static void nfp_net_netdev_init(struct nfp_net *nn)
 	nfp_net_set_ethtool_ops(netdev);
 }
 
-/**
- * nfp_net_init() - Initialise/finalise the nfp_net structure
- * @nn:		NFP Net device structure
- *
- * Return: 0 on success or negative errno on error.
- */
-int nfp_net_init(struct nfp_net *nn)
+static int nfp_net_read_caps(struct nfp_net *nn)
 {
-	int err;
-
-	nn->dp.rx_dma_dir = DMA_FROM_DEVICE;
-
 	/* Get some of the read-only fields from the BAR */
 	nn->cap = nn_readl(nn, NFP_NET_CFG_CAP);
 	nn->max_mtu = nn_readl(nn, NFP_NET_CFG_MAX_MTU);
@@ -3775,6 +3790,29 @@ int nfp_net_init(struct nfp_net *nn)
 		nn->dp.rx_offset = NFP_NET_RX_OFFSET;
 	}
 
+	/* For control vNICs mask out the capabilities app doesn't want. */
+	if (!nn->dp.netdev)
+		nn->cap &= nn->app->type->ctrl_cap_mask;
+
+	return 0;
+}
+
+/**
+ * nfp_net_init() - Initialise/finalise the nfp_net structure
+ * @nn:		NFP Net device structure
+ *
+ * Return: 0 on success or negative errno on error.
+ */
+int nfp_net_init(struct nfp_net *nn)
+{
+	int err;
+
+	nn->dp.rx_dma_dir = DMA_FROM_DEVICE;
+
+	err = nfp_net_read_caps(nn);
+	if (err)
+		return err;
+
 	/* Set default MTU and Freelist buffer size */
 	if (nn->max_mtu < NFP_NET_DEFAULT_MTU)
 		nn->dp.mtu = nn->max_mtu;
@@ -3791,8 +3829,6 @@ int nfp_net_init(struct nfp_net *nn)
 	/* Allow L2 Broadcast and Multicast through by default, if supported */
 	if (nn->cap & NFP_NET_CFG_CTRL_L2BC)
 		nn->dp.ctrl |= NFP_NET_CFG_CTRL_L2BC;
-	if (nn->cap & NFP_NET_CFG_CTRL_L2MC)
-		nn->dp.ctrl |= NFP_NET_CFG_CTRL_L2MC;
 
 	/* Allow IRQ moderation, if supported */
 	if (nn->cap & NFP_NET_CFG_CTRL_IRQMOD) {
@@ -3800,6 +3836,11 @@ int nfp_net_init(struct nfp_net *nn)
 		nn->dp.ctrl |= NFP_NET_CFG_CTRL_IRQMOD;
 	}
 
+	err = nfp_net_tlv_caps_parse(&nn->pdev->dev, nn->dp.ctrl_bar,
+				     &nn->tlv_caps);
+	if (err)
+		return err;
+
 	if (nn->dp.netdev)
 		nfp_net_netdev_init(nn);