Merge branch 'nfp-XDP_TX-optimizations'

Jakub Kicinski says:

====================
nfp: optimize XDP TX and small fixes

This series optimizes the nfp XDP TX performance a little bit.
I run quick tests on an Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz.
Single core/queue performance for both touch and drop and touch and
forward is above 20Mpps @64B packets, drop being 2Mpps faster.
I think this is max for a single queue on the low power NFPs.

There are also a few minor fixes included for code in net-next.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/netronome/nfp/nfp_bpf_jit.c

@@ -798,7 +798,7 @@ wrp_test_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta,
 	const struct bpf_insn *insn = &meta->insn;
 
 	if (insn->off < 0) /* TODO */
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	wrp_test_reg_one(nfp_prog, insn->dst_reg * 2, alu_op,
 			 insn->src_reg * 2, br_mask, insn->off);
@@ -818,7 +818,7 @@ wrp_cmp_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta,
 	u32 tmp_reg;
 
 	if (insn->off < 0) /* TODO */
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog));
 	if (!swap)
@@ -847,7 +847,7 @@ wrp_cmp_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta,
 	u8 areg = insn->src_reg * 2, breg = insn->dst_reg * 2;
 
 	if (insn->off < 0) /* TODO */
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	if (swap) {
 		areg ^= breg;
@@ -1132,7 +1132,7 @@ static int mem_ldx4_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
 		emit_alu(nfp_prog, reg_both(meta->insn.dst_reg * 2),
 			 reg_none(), ALU_OP_NONE, NFP_BPF_ABI_LEN);
 	else
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	return 0;
 }
@@ -1143,7 +1143,7 @@ static int mem_ldx4_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
 
 	if (meta->insn.off != offsetof(struct xdp_md, data) &&
 	    meta->insn.off != offsetof(struct xdp_md, data_end))
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	emit_alu(nfp_prog, dst, reg_none(), ALU_OP_NONE, NFP_BPF_ABI_PKT);
 
@@ -1174,12 +1174,12 @@ static int mem_stx4_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
 	if (meta->insn.off == offsetof(struct sk_buff, mark))
 		return wrp_set_mark(nfp_prog, meta->insn.src_reg * 2);
 
-	return -ENOTSUPP;
+	return -EOPNOTSUPP;
 }
 
 static int mem_stx4_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
 {
-	return -ENOTSUPP;
+	return -EOPNOTSUPP;
 }
 
 static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
@@ -1192,7 +1192,7 @@ static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
 static int jump(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
 {
 	if (meta->insn.off < 0) /* TODO */
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 	emit_br(nfp_prog, BR_UNC, meta->insn.off, 0);
 
 	return 0;
@@ -1206,7 +1206,7 @@ static int jeq_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
 	u32 tmp_reg;
 
 	if (insn->off < 0) /* TODO */
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	if (imm & ~0U) {
 		tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog));
@@ -1245,7 +1245,7 @@ static int jset_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
 	u32 tmp_reg;
 
 	if (insn->off < 0) /* TODO */
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	if (!imm) {
 		meta->skip = true;
@@ -1276,7 +1276,7 @@ static int jne_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
 	u32 tmp_reg;
 
 	if (insn->off < 0) /* TODO */
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	if (!imm) {
 		emit_alu(nfp_prog, reg_none(), reg_a(insn->dst_reg * 2),
@@ -1302,7 +1302,7 @@ static int jeq_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
 	const struct bpf_insn *insn = &meta->insn;
 
 	if (insn->off < 0) /* TODO */
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(insn->dst_reg * 2),
 		 ALU_OP_XOR, reg_b(insn->src_reg * 2));

drivers/net/ethernet/netronome/nfp/nfp_net.h

@@ -201,6 +201,7 @@ struct nfp_net_tx_buf {
  * @txds:       Virtual address of TX ring in host memory
  * @dma:        DMA address of the TX ring
  * @size:       Size, in bytes, of the TX ring (needed to free)
+ * @is_xdp:	Is this a XDP TX ring?
  */
 struct nfp_net_tx_ring {
 	struct nfp_net_r_vector *r_vec;
@@ -221,6 +222,7 @@ struct nfp_net_tx_ring {
 
 	dma_addr_t dma;
 	unsigned int size;
+	bool is_xdp;
 } ____cacheline_aligned;
 
 /* RX and freelist descriptor format */
@@ -468,10 +470,10 @@ struct nfp_net_dp {
 	u8 chained_metadata_format:1;
 
 	u8 rx_dma_dir;
-	u8 rx_dma_off;
-
 	u8 rx_offset;
 
+	u32 rx_dma_off;
+
 	u32 ctrl;
 	u32 fl_bufsz;
 

drivers/net/ethernet/netronome/nfp/nfp_net_common.c

@@ -478,15 +478,18 @@ static irqreturn_t nfp_net_irq_exn(int irq, void *data)
  * @tx_ring:  TX ring structure
  * @r_vec:    IRQ vector servicing this ring
  * @idx:      Ring index
+ * @is_xdp:   Is this an XDP TX ring?
  */
 static void
 nfp_net_tx_ring_init(struct nfp_net_tx_ring *tx_ring,
-		     struct nfp_net_r_vector *r_vec, unsigned int idx)
+		     struct nfp_net_r_vector *r_vec, unsigned int idx,
+		     bool is_xdp)
 {
 	struct nfp_net *nn = r_vec->nfp_net;
 
 	tx_ring->idx = idx;
 	tx_ring->r_vec = r_vec;
+	tx_ring->is_xdp = is_xdp;
 
 	tx_ring->qcidx = tx_ring->idx * nn->stride_tx;
 	tx_ring->qcp_q = nn->tx_bar + NFP_QCP_QUEUE_OFF(tx_ring->qcidx);
@@ -924,6 +927,9 @@ static void nfp_net_tx_complete(struct nfp_net_tx_ring *tx_ring)
 	int fidx;
 	int idx;
 
+	if (tx_ring->wr_p == tx_ring->rd_p)
+		return;
+
 	/* Work out how many descriptors have been transmitted */
 	qcp_rd_p = nfp_qcp_rd_ptr_read(tx_ring->qcp_q);
 
@@ -994,11 +1000,13 @@ static void nfp_net_tx_complete(struct nfp_net_tx_ring *tx_ring)
 static void nfp_net_xdp_complete(struct nfp_net_tx_ring *tx_ring)
 {
 	struct nfp_net_r_vector *r_vec = tx_ring->r_vec;
-	struct nfp_net_dp *dp = &r_vec->nfp_net->dp;
 	u32 done_pkts = 0, done_bytes = 0;
 	int idx, todo;
 	u32 qcp_rd_p;
 
+	if (tx_ring->wr_p == tx_ring->rd_p)
+		return;
+
 	/* Work out how many descriptors have been transmitted */
 	qcp_rd_p = nfp_qcp_rd_ptr_read(tx_ring->qcp_q);
 
@@ -1010,22 +1018,12 @@ static void nfp_net_xdp_complete(struct nfp_net_tx_ring *tx_ring)
 	else
 		todo = qcp_rd_p + tx_ring->cnt - tx_ring->qcp_rd_p;
 
+	done_pkts = todo;
 	while (todo--) {
 		idx = tx_ring->rd_p & (tx_ring->cnt - 1);
 		tx_ring->rd_p++;
 
-		if (!tx_ring->txbufs[idx].frag)
-			continue;
-
-		nfp_net_dma_unmap_rx(dp, tx_ring->txbufs[idx].dma_addr);
-		__free_page(virt_to_page(tx_ring->txbufs[idx].frag));
-
-		done_pkts++;
 		done_bytes += tx_ring->txbufs[idx].real_len;
-
-		tx_ring->txbufs[idx].dma_addr = 0;
-		tx_ring->txbufs[idx].frag = NULL;
-		tx_ring->txbufs[idx].fidx = -2;
 	}
 
 	tx_ring->qcp_rd_p = qcp_rd_p;
@@ -1050,41 +1048,34 @@ static void nfp_net_xdp_complete(struct nfp_net_tx_ring *tx_ring)
 static void
 nfp_net_tx_ring_reset(struct nfp_net_dp *dp, struct nfp_net_tx_ring *tx_ring)
 {
-	struct nfp_net_r_vector *r_vec = tx_ring->r_vec;
 	const struct skb_frag_struct *frag;
 	struct netdev_queue *nd_q;
 
-	while (tx_ring->rd_p != tx_ring->wr_p) {
+	while (!tx_ring->is_xdp && tx_ring->rd_p != tx_ring->wr_p) {
 		struct nfp_net_tx_buf *tx_buf;
-		int idx;
+		struct sk_buff *skb;
+		int idx, nr_frags;
 
 		idx = tx_ring->rd_p & (tx_ring->cnt - 1);
 		tx_buf = &tx_ring->txbufs[idx];
 
-		if (tx_ring == r_vec->xdp_ring) {
-			nfp_net_dma_unmap_rx(dp, tx_buf->dma_addr);
-			__free_page(virt_to_page(tx_ring->txbufs[idx].frag));
-		} else {
-			struct sk_buff *skb = tx_ring->txbufs[idx].skb;
-			int nr_frags = skb_shinfo(skb)->nr_frags;
+		skb = tx_ring->txbufs[idx].skb;
+		nr_frags = skb_shinfo(skb)->nr_frags;
 
 		if (tx_buf->fidx == -1) {
 			/* unmap head */
 			dma_unmap_single(dp->dev, tx_buf->dma_addr,
-						 skb_headlen(skb),
-						 DMA_TO_DEVICE);
+					 skb_headlen(skb), DMA_TO_DEVICE);
 		} else {
 			/* unmap fragment */
 			frag = &skb_shinfo(skb)->frags[tx_buf->fidx];
 			dma_unmap_page(dp->dev, tx_buf->dma_addr,
-					       skb_frag_size(frag),
-					       DMA_TO_DEVICE);
+				       skb_frag_size(frag), DMA_TO_DEVICE);
 		}
 
 		/* check for last gather fragment */
 		if (tx_buf->fidx == nr_frags - 1)
 			dev_kfree_skb_any(skb);
-		}
 
 		tx_buf->dma_addr = 0;
 		tx_buf->skb = NULL;
@@ -1100,7 +1091,7 @@ nfp_net_tx_ring_reset(struct nfp_net_dp *dp, struct nfp_net_tx_ring *tx_ring)
 	tx_ring->qcp_rd_p = 0;
 	tx_ring->wr_ptr_add = 0;
 
-	if (tx_ring == r_vec->xdp_ring)
+	if (tx_ring->is_xdp)
 		return;
 
 	nd_q = netdev_get_tx_queue(dp->netdev, tx_ring->idx);
@@ -1153,16 +1144,13 @@ nfp_net_free_frag(void *frag, bool xdp)
 /**
  * nfp_net_rx_alloc_one() - Allocate and map page frag for RX
  * @dp:		NFP Net data path struct
- * @rx_ring:	RX ring structure of the skb
  * @dma_addr:	Pointer to storage for DMA address (output param)
  *
  * This function will allcate a new page frag, map it for DMA.
  *
  * Return: allocated page frag or NULL on failure.
  */
-static void *
-nfp_net_rx_alloc_one(struct nfp_net_dp *dp, struct nfp_net_rx_ring *rx_ring,
-		     dma_addr_t *dma_addr)
+static void *nfp_net_rx_alloc_one(struct nfp_net_dp *dp, dma_addr_t *dma_addr)
 {
 	void *frag;
 
@@ -1317,8 +1305,7 @@ nfp_net_rx_ring_bufs_alloc(struct nfp_net_dp *dp,
 	rxbufs = rx_ring->rxbufs;
 
 	for (i = 0; i < rx_ring->cnt - 1; i++) {
-		rxbufs[i].frag =
-			nfp_net_rx_alloc_one(dp, rx_ring, &rxbufs[i].dma_addr);
+		rxbufs[i].frag = nfp_net_rx_alloc_one(dp, &rxbufs[i].dma_addr);
 		if (!rxbufs[i].frag) {
 			nfp_net_rx_ring_bufs_free(dp, rx_ring);
 			return -ENOMEM;
@@ -1496,8 +1483,6 @@ nfp_net_tx_xdp_buf(struct nfp_net_dp *dp, struct nfp_net_rx_ring *rx_ring,
 {
 	struct nfp_net_tx_buf *txbuf;
 	struct nfp_net_tx_desc *txd;
-	dma_addr_t new_dma_addr;
-	void *new_frag;
 	int wr_idx;
 
 	if (unlikely(nfp_net_tx_full(tx_ring, 1))) {
@@ -1505,17 +1490,13 @@ nfp_net_tx_xdp_buf(struct nfp_net_dp *dp, struct nfp_net_rx_ring *rx_ring,
 		return false;
 	}
 
-	new_frag = nfp_net_napi_alloc_one(dp, &new_dma_addr);
-	if (unlikely(!new_frag)) {
-		nfp_net_rx_drop(dp, rx_ring->r_vec, rx_ring, rxbuf, NULL);
-		return false;
-	}
-	nfp_net_rx_give_one(dp, rx_ring, new_frag, new_dma_addr);
-
 	wr_idx = tx_ring->wr_p & (tx_ring->cnt - 1);
 
 	/* Stash the soft descriptor of the head then initialize it */
 	txbuf = &tx_ring->txbufs[wr_idx];
+
+	nfp_net_rx_give_one(dp, rx_ring, txbuf->frag, txbuf->dma_addr);
+
 	txbuf->frag = rxbuf->frag;
 	txbuf->dma_addr = rxbuf->dma_addr;
 	txbuf->fidx = -1;
@@ -1800,13 +1781,11 @@ static void nfp_net_tx_ring_free(struct nfp_net_tx_ring *tx_ring)
  * nfp_net_tx_ring_alloc() - Allocate resource for a TX ring
  * @dp:        NFP Net data path struct
  * @tx_ring:   TX Ring structure to allocate
- * @is_xdp:    True if ring will be used for XDP
  *
  * Return: 0 on success, negative errno otherwise.
  */
 static int
-nfp_net_tx_ring_alloc(struct nfp_net_dp *dp, struct nfp_net_tx_ring *tx_ring,
-		      bool is_xdp)
+nfp_net_tx_ring_alloc(struct nfp_net_dp *dp, struct nfp_net_tx_ring *tx_ring)
 {
 	struct nfp_net_r_vector *r_vec = tx_ring->r_vec;
 	int sz;
@@ -1824,7 +1803,7 @@ nfp_net_tx_ring_alloc(struct nfp_net_dp *dp, struct nfp_net_tx_ring *tx_ring,
 	if (!tx_ring->txbufs)
 		goto err_alloc;
 
-	if (!is_xdp)
+	if (!tx_ring->is_xdp)
 		netif_set_xps_queue(dp->netdev, &r_vec->affinity_mask,
 				    tx_ring->idx);
 
@@ -1835,6 +1814,45 @@ nfp_net_tx_ring_alloc(struct nfp_net_dp *dp, struct nfp_net_tx_ring *tx_ring,
 	return -ENOMEM;
 }
 
+static void
+nfp_net_tx_ring_bufs_free(struct nfp_net_dp *dp,
+			  struct nfp_net_tx_ring *tx_ring)
+{
+	unsigned int i;
+
+	if (!tx_ring->is_xdp)
+		return;
+
+	for (i = 0; i < tx_ring->cnt; i++) {
+		if (!tx_ring->txbufs[i].frag)
+			return;
+
+		nfp_net_dma_unmap_rx(dp, tx_ring->txbufs[i].dma_addr);
+		__free_page(virt_to_page(tx_ring->txbufs[i].frag));
+	}
+}
+
+static int
+nfp_net_tx_ring_bufs_alloc(struct nfp_net_dp *dp,
+			   struct nfp_net_tx_ring *tx_ring)
+{
+	struct nfp_net_tx_buf *txbufs = tx_ring->txbufs;
+	unsigned int i;
+
+	if (!tx_ring->is_xdp)
+		return 0;
+
+	for (i = 0; i < tx_ring->cnt; i++) {
+		txbufs[i].frag = nfp_net_rx_alloc_one(dp, &txbufs[i].dma_addr);
+		if (!txbufs[i].frag) {
+			nfp_net_tx_ring_bufs_free(dp, tx_ring);
+			return -ENOMEM;
+		}
+	}
+
+	return 0;
+}
+
 static int nfp_net_tx_rings_prepare(struct nfp_net *nn, struct nfp_net_dp *dp)
 {
 	unsigned int r;
@@ -1851,17 +1869,23 @@ static int nfp_net_tx_rings_prepare(struct nfp_net *nn, struct nfp_net_dp *dp)
 			bias = dp->num_stack_tx_rings;
 
 		nfp_net_tx_ring_init(&dp->tx_rings[r], &nn->r_vecs[r - bias],
-				     r);
+				     r, bias);
 
-		if (nfp_net_tx_ring_alloc(dp, &dp->tx_rings[r], bias))
+		if (nfp_net_tx_ring_alloc(dp, &dp->tx_rings[r]))
 			goto err_free_prev;
+
+		if (nfp_net_tx_ring_bufs_alloc(dp, &dp->tx_rings[r]))
+			goto err_free_ring;
 	}
 
 	return 0;
 
 err_free_prev:
-	while (r--)
+	while (r--) {
+		nfp_net_tx_ring_bufs_free(dp, &dp->tx_rings[r]);
+err_free_ring:
 		nfp_net_tx_ring_free(&dp->tx_rings[r]);
+	}
 	kfree(dp->tx_rings);
 	return -ENOMEM;
 }
@@ -1870,8 +1894,10 @@ static void nfp_net_tx_rings_free(struct nfp_net_dp *dp)
 {
 	unsigned int r;
 
-	for (r = 0; r < dp->num_tx_rings; r++)
+	for (r = 0; r < dp->num_tx_rings; r++) {
+		nfp_net_tx_ring_bufs_free(dp, &dp->tx_rings[r]);
 		nfp_net_tx_ring_free(&dp->tx_rings[r]);
+	}
 
 	kfree(dp->tx_rings);
 }
@@ -2369,8 +2395,10 @@ static void nfp_net_close_free_all(struct nfp_net *nn)
 		nfp_net_rx_ring_bufs_free(&nn->dp, &nn->dp.rx_rings[r]);
 		nfp_net_rx_ring_free(&nn->dp.rx_rings[r]);
 	}
-	for (r = 0; r < nn->dp.num_tx_rings; r++)
+	for (r = 0; r < nn->dp.num_tx_rings; r++) {
+		nfp_net_tx_ring_bufs_free(&nn->dp, &nn->dp.tx_rings[r]);
 		nfp_net_tx_ring_free(&nn->dp.tx_rings[r]);
+	}
 	for (r = 0; r < nn->dp.num_r_vecs; r++)
 		nfp_net_cleanup_vector(nn, &nn->r_vecs[r]);
 
@@ -2651,9 +2679,9 @@ nfp_net_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
 	struct nfp_net *nn = netdev_priv(netdev);
 
 	if (TC_H_MAJ(handle) != TC_H_MAJ(TC_H_INGRESS))
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 	if (proto != htons(ETH_P_ALL))
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	if (tc->type == TC_SETUP_CLSBPF && nfp_net_ebpf_capable(nn)) {
 		if (!nn->dp.bpf_offload_xdp)
@@ -2938,11 +2966,7 @@ static int nfp_net_xdp_setup(struct nfp_net *nn, struct bpf_prog *prog)
 	dp->xdp_prog = prog;
 	dp->num_tx_rings += prog ? nn->dp.num_rx_rings : -nn->dp.num_rx_rings;
 	dp->rx_dma_dir = prog ? DMA_BIDIRECTIONAL : DMA_FROM_DEVICE;
-	if (prog)
-		dp->rx_dma_off = XDP_PACKET_HEADROOM -
-			(nn->dp.rx_offset ?: NFP_NET_MAX_PREPEND);
-	else
-		dp->rx_dma_off = 0;
+	dp->rx_dma_off = prog ? XDP_PACKET_HEADROOM - nn->dp.rx_offset : 0;
 
 	/* We need RX reconfig to remap the buffers (BIDIR vs FROM_DEV) */
 	err = nfp_net_ring_reconfig(nn, dp);
@@ -3170,13 +3194,6 @@ int nfp_net_netdev_init(struct net_device *netdev)
 	struct nfp_net *nn = netdev_priv(netdev);
 	int err;
 
-	/* XDP calls for 256 byte packet headroom which wouldn't fit in a u8.
-	 * We, however, reuse the metadata prepend space for XDP buffers which
-	 * is at least 1 byte long and as long as XDP headroom doesn't increase
-	 * above 256 the *extra* XDP headroom will fit on 8 bits.
-	 */
-	BUILD_BUG_ON(XDP_PACKET_HEADROOM > 256);
-
 	nn->dp.chained_metadata_format = nn->fw_ver.major > 3;
 
 	nn->dp.rx_dma_dir = DMA_FROM_DEVICE;

drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c

@@ -791,7 +791,7 @@ static int nfp_net_set_coalesce(struct net_device *netdev,
 	    ec->tx_coalesce_usecs_high ||
 	    ec->tx_max_coalesced_frames_high ||
 	    ec->rate_sample_interval)
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	/* Compute factor used to convert coalesce '_usecs' parameters to
 	 * ME timestamp ticks.  There are 16 ME clock cycles for each timestamp

drivers/net/ethernet/netronome/nfp/nfp_net_offload.c

@@ -119,12 +119,12 @@ nfp_net_bpf_get_act(struct nfp_net *nn, struct tc_cls_bpf_offload *cls_bpf)
 		if (tc_no_actions(cls_bpf->exts))
 			return NN_ACT_DIRECT;
 
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 	}
 
 	/* TC legacy mode */
 	if (!tc_single_action(cls_bpf->exts))
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	tcf_exts_to_list(cls_bpf->exts, &actions);
 	list_for_each_entry(a, &actions, list) {
@@ -136,7 +136,7 @@ nfp_net_bpf_get_act(struct nfp_net *nn, struct tc_cls_bpf_offload *cls_bpf)
 			return NN_ACT_TC_REDIR;
 	}
 
-	return -ENOTSUPP;
+	return -EOPNOTSUPP;
 }
 
 static int
@@ -152,7 +152,7 @@ nfp_net_bpf_offload_prepare(struct nfp_net *nn,
 	int ret;
 
 	if (!IS_ENABLED(CONFIG_BPF_SYSCALL))
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	ret = nfp_net_bpf_get_act(nn, cls_bpf);
 	if (ret < 0)
@@ -162,7 +162,7 @@ nfp_net_bpf_offload_prepare(struct nfp_net *nn,
 	max_mtu = nn_readb(nn, NFP_NET_CFG_BPF_INL_MTU) * 64 - 32;
 	if (max_mtu < nn->dp.netdev->mtu) {
 		nn_info(nn, "BPF offload not supported with MTU larger than HW packet split boundary\n");
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 	}
 
 	start_off = nn_readw(nn, NFP_NET_CFG_BPF_START);
@@ -289,6 +289,6 @@ int nfp_net_bpf_offload(struct nfp_net *nn, struct tc_cls_bpf_offload *cls_bpf)
 		return nfp_net_bpf_stats_update(nn, cls_bpf);
 
 	default:
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 	}
 }

drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.c

@@ -78,7 +78,7 @@
 
 #define NSP_MAGIC		0xab10
 #define NSP_MAJOR		0
-#define NSP_MINOR		(__MAX_SPCODE - 1)
+#define NSP_MINOR		8
 
 #define NSP_CODE_MAJOR		GENMASK(15, 12)
 #define NSP_CODE_MINOR		GENMASK(11, 0)
@@ -94,8 +94,6 @@ enum nfp_nsp_cmd {
 	SPCODE_ETH_RESCAN	= 7, /* Rescan ETHs, write ETH_TABLE to buf */
 	SPCODE_ETH_CONTROL	= 8, /* Update media config from buffer */
 	SPCODE_NSP_IDENTIFY	= 13, /* Read NSP version */
-
-	__MAX_SPCODE,
 };
 
 static const struct {