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path: root/drivers/net/ethernet/netronome/nfp/nfdk/dp.c
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Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/nfdk/dp.c')
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfdk/dp.c122
1 files changed, 60 insertions, 62 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfdk/dp.c b/drivers/net/ethernet/netronome/nfp/nfdk/dp.c
index 805071d64a20..2b427d8ccb2f 100644
--- a/drivers/net/ethernet/netronome/nfp/nfdk/dp.c
+++ b/drivers/net/ethernet/netronome/nfp/nfdk/dp.c
@@ -46,28 +46,16 @@ nfp_nfdk_tx_tso(struct nfp_net_r_vector *r_vec, struct nfp_nfdk_tx_buf *txbuf,
if (!skb->encapsulation) {
l3_offset = skb_network_offset(skb);
l4_offset = skb_transport_offset(skb);
- hdrlen = skb_transport_offset(skb) + tcp_hdrlen(skb);
+ hdrlen = skb_tcp_all_headers(skb);
} else {
l3_offset = skb_inner_network_offset(skb);
l4_offset = skb_inner_transport_offset(skb);
- hdrlen = skb_inner_transport_header(skb) - skb->data +
- inner_tcp_hdrlen(skb);
+ hdrlen = skb_inner_tcp_all_headers(skb);
}
segs = skb_shinfo(skb)->gso_segs;
mss = skb_shinfo(skb)->gso_size & NFDK_DESC_TX_MSS_MASK;
- /* Note: TSO of the packet with metadata prepended to skb is not
- * supported yet, in which case l3/l4_offset and lso_hdrlen need
- * be correctly handled here.
- * Concern:
- * The driver doesn't have md_bytes easily available at this point.
- * The PCI.IN PD ME won't have md_bytes bytes to add to lso_hdrlen,
- * so it needs the full length there. The app MEs might prefer
- * l3_offset and l4_offset relative to the start of packet data,
- * but could probably cope with it being relative to the CTM buf
- * data offset.
- */
txd.l3_offset = l3_offset;
txd.l4_offset = l4_offset;
txd.lso_meta_res = 0;
@@ -182,55 +170,52 @@ close_block:
return 0;
}
-static int nfp_nfdk_prep_port_id(struct sk_buff *skb)
+static int
+nfp_nfdk_prep_tx_meta(struct nfp_net_dp *dp, struct nfp_app *app,
+ struct sk_buff *skb)
{
struct metadata_dst *md_dst = skb_metadata_dst(skb);
unsigned char *data;
+ bool vlan_insert;
+ u32 meta_id = 0;
+ int md_bytes;
- if (likely(!md_dst))
- return 0;
- if (unlikely(md_dst->type != METADATA_HW_PORT_MUX))
- return 0;
-
- /* Note: Unsupported case when TSO a skb with metedata prepended.
- * See the comments in `nfp_nfdk_tx_tso` for details.
- */
- if (unlikely(md_dst && skb_is_gso(skb)))
- return -EOPNOTSUPP;
-
- if (unlikely(skb_cow_head(skb, sizeof(md_dst->u.port_info.port_id))))
- return -ENOMEM;
-
- data = skb_push(skb, sizeof(md_dst->u.port_info.port_id));
- put_unaligned_be32(md_dst->u.port_info.port_id, data);
-
- return sizeof(md_dst->u.port_info.port_id);
-}
+ if (unlikely(md_dst && md_dst->type != METADATA_HW_PORT_MUX))
+ md_dst = NULL;
-static int
-nfp_nfdk_prep_tx_meta(struct nfp_app *app, struct sk_buff *skb,
- struct nfp_net_r_vector *r_vec)
-{
- unsigned char *data;
- int res, md_bytes;
- u32 meta_id = 0;
+ vlan_insert = skb_vlan_tag_present(skb) && (dp->ctrl & NFP_NET_CFG_CTRL_TXVLAN_V2);
- res = nfp_nfdk_prep_port_id(skb);
- if (unlikely(res <= 0))
- return res;
+ if (!(md_dst || vlan_insert))
+ return 0;
- md_bytes = res;
- meta_id = NFP_NET_META_PORTID;
+ md_bytes = sizeof(meta_id) +
+ !!md_dst * NFP_NET_META_PORTID_SIZE +
+ vlan_insert * NFP_NET_META_VLAN_SIZE;
- if (unlikely(skb_cow_head(skb, sizeof(meta_id))))
+ if (unlikely(skb_cow_head(skb, md_bytes)))
return -ENOMEM;
- md_bytes += sizeof(meta_id);
+ data = skb_push(skb, md_bytes) + md_bytes;
+ if (md_dst) {
+ data -= NFP_NET_META_PORTID_SIZE;
+ put_unaligned_be32(md_dst->u.port_info.port_id, data);
+ meta_id = NFP_NET_META_PORTID;
+ }
+ if (vlan_insert) {
+ data -= NFP_NET_META_VLAN_SIZE;
+ /* data type of skb->vlan_proto is __be16
+ * so it fills metadata without calling put_unaligned_be16
+ */
+ memcpy(data, &skb->vlan_proto, sizeof(skb->vlan_proto));
+ put_unaligned_be16(skb_vlan_tag_get(skb), data + sizeof(skb->vlan_proto));
+ meta_id <<= NFP_NET_META_FIELD_SIZE;
+ meta_id |= NFP_NET_META_VLAN;
+ }
meta_id = FIELD_PREP(NFDK_META_LEN, md_bytes) |
FIELD_PREP(NFDK_META_FIELDS, meta_id);
- data = skb_push(skb, sizeof(meta_id));
+ data -= sizeof(meta_id);
put_unaligned_be32(meta_id, data);
return NFDK_DESC_TX_CHAIN_META;
@@ -278,7 +263,7 @@ netdev_tx_t nfp_nfdk_tx(struct sk_buff *skb, struct net_device *netdev)
return NETDEV_TX_BUSY;
}
- metadata = nfp_nfdk_prep_tx_meta(nn->app, skb, r_vec);
+ metadata = nfp_nfdk_prep_tx_meta(dp, nn->app, skb);
if (unlikely((int)metadata < 0))
goto err_flush;
@@ -327,7 +312,7 @@ netdev_tx_t nfp_nfdk_tx(struct sk_buff *skb, struct net_device *netdev)
FIELD_PREP(NFDK_DESC_TX_TYPE_HEAD, type);
txd->dma_len_type = cpu_to_le16(dlen_type);
- nfp_nfdk_tx_desc_set_dma_addr(txd, dma_addr);
+ nfp_desc_set_dma_addr_48b(txd, dma_addr);
/* starts at bit 0 */
BUILD_BUG_ON(!(NFDK_DESC_TX_DMA_LEN_HEAD & 1));
@@ -352,7 +337,7 @@ netdev_tx_t nfp_nfdk_tx(struct sk_buff *skb, struct net_device *netdev)
dlen_type = FIELD_PREP(NFDK_DESC_TX_DMA_LEN, dma_len);
txd->dma_len_type = cpu_to_le16(dlen_type);
- nfp_nfdk_tx_desc_set_dma_addr(txd, dma_addr);
+ nfp_desc_set_dma_addr_48b(txd, dma_addr);
dma_len -= dlen_type;
dma_addr += dlen_type + 1;
@@ -608,8 +593,8 @@ nfp_nfdk_rx_give_one(const struct nfp_net_dp *dp,
/* Fill freelist descriptor */
rx_ring->rxds[wr_idx].fld.reserved = 0;
rx_ring->rxds[wr_idx].fld.meta_len_dd = 0;
- nfp_desc_set_dma_addr(&rx_ring->rxds[wr_idx].fld,
- dma_addr + dp->rx_dma_off);
+ nfp_desc_set_dma_addr_48b(&rx_ring->rxds[wr_idx].fld,
+ dma_addr + dp->rx_dma_off);
rx_ring->wr_p++;
if (!(rx_ring->wr_p % NFP_NET_FL_BATCH)) {
@@ -730,7 +715,7 @@ static bool
nfp_nfdk_parse_meta(struct net_device *netdev, struct nfp_meta_parsed *meta,
void *data, void *pkt, unsigned int pkt_len, int meta_len)
{
- u32 meta_info;
+ u32 meta_info, vlan_info;
meta_info = get_unaligned_be32(data);
data += 4;
@@ -748,6 +733,17 @@ nfp_nfdk_parse_meta(struct net_device *netdev, struct nfp_meta_parsed *meta,
meta->mark = get_unaligned_be32(data);
data += 4;
break;
+ case NFP_NET_META_VLAN:
+ vlan_info = get_unaligned_be32(data);
+ if (FIELD_GET(NFP_NET_META_VLAN_STRIP, vlan_info)) {
+ meta->vlan.stripped = true;
+ meta->vlan.tpid = FIELD_GET(NFP_NET_META_VLAN_TPID_MASK,
+ vlan_info);
+ meta->vlan.tci = FIELD_GET(NFP_NET_META_VLAN_TCI_MASK,
+ vlan_info);
+ }
+ data += 4;
+ break;
case NFP_NET_META_PORTID:
meta->portid = get_unaligned_be32(data);
data += 4;
@@ -944,7 +940,7 @@ nfp_nfdk_tx_xdp_buf(struct nfp_net_dp *dp, struct nfp_net_rx_ring *rx_ring,
FIELD_PREP(NFDK_DESC_TX_TYPE_HEAD, type);
txd->dma_len_type = cpu_to_le16(dlen_type);
- nfp_nfdk_tx_desc_set_dma_addr(txd, dma_addr);
+ nfp_desc_set_dma_addr_48b(txd, dma_addr);
tmp_dlen = dlen_type & NFDK_DESC_TX_DMA_LEN_HEAD;
dma_len -= tmp_dlen;
@@ -955,7 +951,7 @@ nfp_nfdk_tx_xdp_buf(struct nfp_net_dp *dp, struct nfp_net_rx_ring *rx_ring,
dma_len -= 1;
dlen_type = FIELD_PREP(NFDK_DESC_TX_DMA_LEN, dma_len);
txd->dma_len_type = cpu_to_le16(dlen_type);
- nfp_nfdk_tx_desc_set_dma_addr(txd, dma_addr);
+ nfp_desc_set_dma_addr_48b(txd, dma_addr);
dlen_type &= NFDK_DESC_TX_DMA_LEN;
dma_len -= dlen_type;
@@ -1185,9 +1181,11 @@ static int nfp_nfdk_rx(struct nfp_net_rx_ring *rx_ring, int budget)
nfp_nfdk_rx_csum(dp, r_vec, rxd, &meta, skb);
- if (rxd->rxd.flags & PCIE_DESC_RX_VLAN)
- __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
- le16_to_cpu(rxd->rxd.vlan));
+ if (unlikely(!nfp_net_vlan_strip(skb, rxd, &meta))) {
+ nfp_nfdk_rx_drop(dp, r_vec, rx_ring, NULL, skb);
+ continue;
+ }
+
if (meta_len_xdp)
skb_metadata_set(skb, meta_len_xdp);
@@ -1349,7 +1347,7 @@ nfp_nfdk_ctrl_tx_one(struct nfp_net *nn, struct nfp_net_r_vector *r_vec,
FIELD_PREP(NFDK_DESC_TX_TYPE_HEAD, type);
txd->dma_len_type = cpu_to_le16(dlen_type);
- nfp_nfdk_tx_desc_set_dma_addr(txd, dma_addr);
+ nfp_desc_set_dma_addr_48b(txd, dma_addr);
tmp_dlen = dlen_type & NFDK_DESC_TX_DMA_LEN_HEAD;
dma_len -= tmp_dlen;
@@ -1360,7 +1358,7 @@ nfp_nfdk_ctrl_tx_one(struct nfp_net *nn, struct nfp_net_r_vector *r_vec,
dma_len -= 1;
dlen_type = FIELD_PREP(NFDK_DESC_TX_DMA_LEN, dma_len);
txd->dma_len_type = cpu_to_le16(dlen_type);
- nfp_nfdk_tx_desc_set_dma_addr(txd, dma_addr);
+ nfp_desc_set_dma_addr_48b(txd, dma_addr);
dlen_type &= NFDK_DESC_TX_DMA_LEN;
dma_len -= dlen_type;
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-28 17:09:18 +0300