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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2019, Intel Corporation. */
3
4#include "ice_txrx_lib.h"
5
6/**
7 * ice_release_rx_desc - Store the new tail and head values
8 * @rx_ring: ring to bump
9 * @val: new head index
10 */
11void ice_release_rx_desc(struct ice_ring *rx_ring, u16 val)
12{
13 u16 prev_ntu = rx_ring->next_to_use & ~0x7;
14
15 rx_ring->next_to_use = val;
16
17 /* update next to alloc since we have filled the ring */
18 rx_ring->next_to_alloc = val;
19
20 /* QRX_TAIL will be updated with any tail value, but hardware ignores
21 * the lower 3 bits. This makes it so we only bump tail on meaningful
22 * boundaries. Also, this allows us to bump tail on intervals of 8 up to
23 * the budget depending on the current traffic load.
24 */
25 val &= ~0x7;
26 if (prev_ntu != val) {
27 /* Force memory writes to complete before letting h/w
28 * know there are new descriptors to fetch. (Only
29 * applicable for weak-ordered memory model archs,
30 * such as IA-64).
31 */
32 wmb();
33 writel(val, rx_ring->tail);
34 }
35}
36
37/**
38 * ice_ptype_to_htype - get a hash type
39 * @ptype: the ptype value from the descriptor
40 *
41 * Returns a hash type to be used by skb_set_hash
42 */
43static enum pkt_hash_types ice_ptype_to_htype(u8 __always_unused ptype)
44{
45 return PKT_HASH_TYPE_NONE;
46}
47
48/**
49 * ice_rx_hash - set the hash value in the skb
50 * @rx_ring: descriptor ring
51 * @rx_desc: specific descriptor
52 * @skb: pointer to current skb
53 * @rx_ptype: the ptype value from the descriptor
54 */
55static void
56ice_rx_hash(struct ice_ring *rx_ring, union ice_32b_rx_flex_desc *rx_desc,
57 struct sk_buff *skb, u8 rx_ptype)
58{
59 struct ice_32b_rx_flex_desc_nic *nic_mdid;
60 u32 hash;
61
62 if (!(rx_ring->netdev->features & NETIF_F_RXHASH))
63 return;
64
65 if (rx_desc->wb.rxdid != ICE_RXDID_FLEX_NIC)
66 return;
67
68 nic_mdid = (struct ice_32b_rx_flex_desc_nic *)rx_desc;
69 hash = le32_to_cpu(nic_mdid->rss_hash);
70 skb_set_hash(skb, hash, ice_ptype_to_htype(rx_ptype));
71}
72
73/**
74 * ice_rx_csum - Indicate in skb if checksum is good
75 * @ring: the ring we care about
76 * @skb: skb currently being received and modified
77 * @rx_desc: the receive descriptor
78 * @ptype: the packet type decoded by hardware
79 *
80 * skb->protocol must be set before this function is called
81 */
82static void
83ice_rx_csum(struct ice_ring *ring, struct sk_buff *skb,
84 union ice_32b_rx_flex_desc *rx_desc, u8 ptype)
85{
86 struct ice_rx_ptype_decoded decoded;
87 u16 rx_status0, rx_status1;
88 bool ipv4, ipv6;
89
90 rx_status0 = le16_to_cpu(rx_desc->wb.status_error0);
91 rx_status1 = le16_to_cpu(rx_desc->wb.status_error1);
92
93 decoded = ice_decode_rx_desc_ptype(ptype);
94
95 /* Start with CHECKSUM_NONE and by default csum_level = 0 */
96 skb->ip_summed = CHECKSUM_NONE;
97 skb_checksum_none_assert(skb);
98
99 /* check if Rx checksum is enabled */
100 if (!(ring->netdev->features & NETIF_F_RXCSUM))
101 return;
102
103 /* check if HW has decoded the packet and checksum */
104 if (!(rx_status0 & BIT(ICE_RX_FLEX_DESC_STATUS0_L3L4P_S)))
105 return;
106
107 if (!(decoded.known && decoded.outer_ip))
108 return;
109
110 ipv4 = (decoded.outer_ip == ICE_RX_PTYPE_OUTER_IP) &&
111 (decoded.outer_ip_ver == ICE_RX_PTYPE_OUTER_IPV4);
112 ipv6 = (decoded.outer_ip == ICE_RX_PTYPE_OUTER_IP) &&
113 (decoded.outer_ip_ver == ICE_RX_PTYPE_OUTER_IPV6);
114
115 if (ipv4 && (rx_status0 & (BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_IPE_S) |
116 BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_EIPE_S))))
117 goto checksum_fail;
118
119 if (ipv6 && (rx_status0 & (BIT(ICE_RX_FLEX_DESC_STATUS0_IPV6EXADD_S))))
120 goto checksum_fail;
121
122 /* check for L4 errors and handle packets that were not able to be
123 * checksummed due to arrival speed
124 */
125 if (rx_status0 & BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_L4E_S))
126 goto checksum_fail;
127
128 /* check for outer UDP checksum error in tunneled packets */
129 if ((rx_status1 & BIT(ICE_RX_FLEX_DESC_STATUS1_NAT_S)) &&
130 (rx_status0 & BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_EUDPE_S)))
131 goto checksum_fail;
132
133 /* If there is an outer header present that might contain a checksum
134 * we need to bump the checksum level by 1 to reflect the fact that
135 * we are indicating we validated the inner checksum.
136 */
137 if (decoded.tunnel_type >= ICE_RX_PTYPE_TUNNEL_IP_GRENAT)
138 skb->csum_level = 1;
139
140 /* Only report checksum unnecessary for TCP, UDP, or SCTP */
141 switch (decoded.inner_prot) {
142 case ICE_RX_PTYPE_INNER_PROT_TCP:
143 case ICE_RX_PTYPE_INNER_PROT_UDP:
144 case ICE_RX_PTYPE_INNER_PROT_SCTP:
145 skb->ip_summed = CHECKSUM_UNNECESSARY;
146 default:
147 break;
148 }
149 return;
150
151checksum_fail:
152 ring->vsi->back->hw_csum_rx_error++;
153}
154
155/**
156 * ice_process_skb_fields - Populate skb header fields from Rx descriptor
157 * @rx_ring: Rx descriptor ring packet is being transacted on
158 * @rx_desc: pointer to the EOP Rx descriptor
159 * @skb: pointer to current skb being populated
160 * @ptype: the packet type decoded by hardware
161 *
162 * This function checks the ring, descriptor, and packet information in
163 * order to populate the hash, checksum, VLAN, protocol, and
164 * other fields within the skb.
165 */
166void
167ice_process_skb_fields(struct ice_ring *rx_ring,
168 union ice_32b_rx_flex_desc *rx_desc,
169 struct sk_buff *skb, u8 ptype)
170{
171 ice_rx_hash(rx_ring, rx_desc, skb, ptype);
172
173 /* modifies the skb - consumes the enet header */
174 skb->protocol = eth_type_trans(skb, rx_ring->netdev);
175
176 ice_rx_csum(rx_ring, skb, rx_desc, ptype);
177}
178
179/**
180 * ice_receive_skb - Send a completed packet up the stack
181 * @rx_ring: Rx ring in play
182 * @skb: packet to send up
183 * @vlan_tag: VLAN tag for packet
184 *
185 * This function sends the completed packet (via. skb) up the stack using
186 * gro receive functions (with/without VLAN tag)
187 */
188void
189ice_receive_skb(struct ice_ring *rx_ring, struct sk_buff *skb, u16 vlan_tag)
190{
191 if ((rx_ring->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
192 (vlan_tag & VLAN_VID_MASK))
193 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
194 if (napi_gro_receive(&rx_ring->q_vector->napi, skb) == GRO_DROP) {
195 /* this is tracked separately to help us debug stack drops */
196 rx_ring->rx_stats.gro_dropped++;
197 netdev_dbg(rx_ring->netdev, "Receive Queue %d: Dropped packet from GRO\n",
198 rx_ring->q_index);
199 }
200}
201
202/**
203 * ice_xmit_xdp_ring - submit single packet to XDP ring for transmission
204 * @data: packet data pointer
205 * @size: packet data size
206 * @xdp_ring: XDP ring for transmission
207 */
208int ice_xmit_xdp_ring(void *data, u16 size, struct ice_ring *xdp_ring)
209{
210 u16 i = xdp_ring->next_to_use;
211 struct ice_tx_desc *tx_desc;
212 struct ice_tx_buf *tx_buf;
213 dma_addr_t dma;
214
215 if (!unlikely(ICE_DESC_UNUSED(xdp_ring))) {
216 xdp_ring->tx_stats.tx_busy++;
217 return ICE_XDP_CONSUMED;
218 }
219
220 dma = dma_map_single(xdp_ring->dev, data, size, DMA_TO_DEVICE);
221 if (dma_mapping_error(xdp_ring->dev, dma))
222 return ICE_XDP_CONSUMED;
223
224 tx_buf = &xdp_ring->tx_buf[i];
225 tx_buf->bytecount = size;
226 tx_buf->gso_segs = 1;
227 tx_buf->raw_buf = data;
228
229 /* record length, and DMA address */
230 dma_unmap_len_set(tx_buf, len, size);
231 dma_unmap_addr_set(tx_buf, dma, dma);
232
233 tx_desc = ICE_TX_DESC(xdp_ring, i);
234 tx_desc->buf_addr = cpu_to_le64(dma);
235 tx_desc->cmd_type_offset_bsz = ice_build_ctob(ICE_TXD_LAST_DESC_CMD, 0,
236 size, 0);
237
238 /* Make certain all of the status bits have been updated
239 * before next_to_watch is written.
240 */
241 smp_wmb();
242
243 i++;
244 if (i == xdp_ring->count)
245 i = 0;
246
247 tx_buf->next_to_watch = tx_desc;
248 xdp_ring->next_to_use = i;
249
250 return ICE_XDP_TX;
251}
252
253/**
254 * ice_xmit_xdp_buff - convert an XDP buffer to an XDP frame and send it
255 * @xdp: XDP buffer
256 * @xdp_ring: XDP Tx ring
257 *
258 * Returns negative on failure, 0 on success.
259 */
260int ice_xmit_xdp_buff(struct xdp_buff *xdp, struct ice_ring *xdp_ring)
261{
262 struct xdp_frame *xdpf = xdp_convert_buff_to_frame(xdp);
263
264 if (unlikely(!xdpf))
265 return ICE_XDP_CONSUMED;
266
267 return ice_xmit_xdp_ring(xdpf->data, xdpf->len, xdp_ring);
268}
269
270/**
271 * ice_finalize_xdp_rx - Bump XDP Tx tail and/or flush redirect map
272 * @rx_ring: Rx ring
273 * @xdp_res: Result of the receive batch
274 *
275 * This function bumps XDP Tx tail and/or flush redirect map, and
276 * should be called when a batch of packets has been processed in the
277 * napi loop.
278 */
279void ice_finalize_xdp_rx(struct ice_ring *rx_ring, unsigned int xdp_res)
280{
281 if (xdp_res & ICE_XDP_REDIR)
282 xdp_do_flush_map();
283
284 if (xdp_res & ICE_XDP_TX) {
285 struct ice_ring *xdp_ring =
286 rx_ring->vsi->xdp_rings[rx_ring->q_index];
287
288 ice_xdp_ring_update_tail(xdp_ring);
289 }
290}
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2019, Intel Corporation. */
3
4#include <linux/filter.h>
5
6#include "ice_txrx_lib.h"
7#include "ice_eswitch.h"
8#include "ice_lib.h"
9
10/**
11 * ice_release_rx_desc - Store the new tail and head values
12 * @rx_ring: ring to bump
13 * @val: new head index
14 */
15void ice_release_rx_desc(struct ice_rx_ring *rx_ring, u16 val)
16{
17 u16 prev_ntu = rx_ring->next_to_use & ~0x7;
18
19 rx_ring->next_to_use = val;
20
21 /* update next to alloc since we have filled the ring */
22 rx_ring->next_to_alloc = val;
23
24 /* QRX_TAIL will be updated with any tail value, but hardware ignores
25 * the lower 3 bits. This makes it so we only bump tail on meaningful
26 * boundaries. Also, this allows us to bump tail on intervals of 8 up to
27 * the budget depending on the current traffic load.
28 */
29 val &= ~0x7;
30 if (prev_ntu != val) {
31 /* Force memory writes to complete before letting h/w
32 * know there are new descriptors to fetch. (Only
33 * applicable for weak-ordered memory model archs,
34 * such as IA-64).
35 */
36 wmb();
37 writel(val, rx_ring->tail);
38 }
39}
40
41/**
42 * ice_ptype_to_htype - get a hash type
43 * @ptype: the ptype value from the descriptor
44 *
45 * Returns appropriate hash type (such as PKT_HASH_TYPE_L2/L3/L4) to be used by
46 * skb_set_hash based on PTYPE as parsed by HW Rx pipeline and is part of
47 * Rx desc.
48 */
49static enum pkt_hash_types ice_ptype_to_htype(u16 ptype)
50{
51 struct ice_rx_ptype_decoded decoded = ice_decode_rx_desc_ptype(ptype);
52
53 if (!decoded.known)
54 return PKT_HASH_TYPE_NONE;
55 if (decoded.payload_layer == ICE_RX_PTYPE_PAYLOAD_LAYER_PAY4)
56 return PKT_HASH_TYPE_L4;
57 if (decoded.payload_layer == ICE_RX_PTYPE_PAYLOAD_LAYER_PAY3)
58 return PKT_HASH_TYPE_L3;
59 if (decoded.outer_ip == ICE_RX_PTYPE_OUTER_L2)
60 return PKT_HASH_TYPE_L2;
61
62 return PKT_HASH_TYPE_NONE;
63}
64
65/**
66 * ice_rx_hash - set the hash value in the skb
67 * @rx_ring: descriptor ring
68 * @rx_desc: specific descriptor
69 * @skb: pointer to current skb
70 * @rx_ptype: the ptype value from the descriptor
71 */
72static void
73ice_rx_hash(struct ice_rx_ring *rx_ring, union ice_32b_rx_flex_desc *rx_desc,
74 struct sk_buff *skb, u16 rx_ptype)
75{
76 struct ice_32b_rx_flex_desc_nic *nic_mdid;
77 u32 hash;
78
79 if (!(rx_ring->netdev->features & NETIF_F_RXHASH))
80 return;
81
82 if (rx_desc->wb.rxdid != ICE_RXDID_FLEX_NIC)
83 return;
84
85 nic_mdid = (struct ice_32b_rx_flex_desc_nic *)rx_desc;
86 hash = le32_to_cpu(nic_mdid->rss_hash);
87 skb_set_hash(skb, hash, ice_ptype_to_htype(rx_ptype));
88}
89
90/**
91 * ice_rx_csum - Indicate in skb if checksum is good
92 * @ring: the ring we care about
93 * @skb: skb currently being received and modified
94 * @rx_desc: the receive descriptor
95 * @ptype: the packet type decoded by hardware
96 *
97 * skb->protocol must be set before this function is called
98 */
99static void
100ice_rx_csum(struct ice_rx_ring *ring, struct sk_buff *skb,
101 union ice_32b_rx_flex_desc *rx_desc, u16 ptype)
102{
103 struct ice_rx_ptype_decoded decoded;
104 u16 rx_status0, rx_status1;
105 bool ipv4, ipv6;
106
107 rx_status0 = le16_to_cpu(rx_desc->wb.status_error0);
108 rx_status1 = le16_to_cpu(rx_desc->wb.status_error1);
109
110 decoded = ice_decode_rx_desc_ptype(ptype);
111
112 /* Start with CHECKSUM_NONE and by default csum_level = 0 */
113 skb->ip_summed = CHECKSUM_NONE;
114 skb_checksum_none_assert(skb);
115
116 /* check if Rx checksum is enabled */
117 if (!(ring->netdev->features & NETIF_F_RXCSUM))
118 return;
119
120 /* check if HW has decoded the packet and checksum */
121 if (!(rx_status0 & BIT(ICE_RX_FLEX_DESC_STATUS0_L3L4P_S)))
122 return;
123
124 if (!(decoded.known && decoded.outer_ip))
125 return;
126
127 ipv4 = (decoded.outer_ip == ICE_RX_PTYPE_OUTER_IP) &&
128 (decoded.outer_ip_ver == ICE_RX_PTYPE_OUTER_IPV4);
129 ipv6 = (decoded.outer_ip == ICE_RX_PTYPE_OUTER_IP) &&
130 (decoded.outer_ip_ver == ICE_RX_PTYPE_OUTER_IPV6);
131
132 if (ipv4 && (rx_status0 & (BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_IPE_S) |
133 BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_EIPE_S))))
134 goto checksum_fail;
135
136 if (ipv6 && (rx_status0 & (BIT(ICE_RX_FLEX_DESC_STATUS0_IPV6EXADD_S))))
137 goto checksum_fail;
138
139 /* check for L4 errors and handle packets that were not able to be
140 * checksummed due to arrival speed
141 */
142 if (rx_status0 & BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_L4E_S))
143 goto checksum_fail;
144
145 /* check for outer UDP checksum error in tunneled packets */
146 if ((rx_status1 & BIT(ICE_RX_FLEX_DESC_STATUS1_NAT_S)) &&
147 (rx_status0 & BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_EUDPE_S)))
148 goto checksum_fail;
149
150 /* If there is an outer header present that might contain a checksum
151 * we need to bump the checksum level by 1 to reflect the fact that
152 * we are indicating we validated the inner checksum.
153 */
154 if (decoded.tunnel_type >= ICE_RX_PTYPE_TUNNEL_IP_GRENAT)
155 skb->csum_level = 1;
156
157 /* Only report checksum unnecessary for TCP, UDP, or SCTP */
158 switch (decoded.inner_prot) {
159 case ICE_RX_PTYPE_INNER_PROT_TCP:
160 case ICE_RX_PTYPE_INNER_PROT_UDP:
161 case ICE_RX_PTYPE_INNER_PROT_SCTP:
162 skb->ip_summed = CHECKSUM_UNNECESSARY;
163 break;
164 default:
165 break;
166 }
167 return;
168
169checksum_fail:
170 ring->vsi->back->hw_csum_rx_error++;
171}
172
173/**
174 * ice_process_skb_fields - Populate skb header fields from Rx descriptor
175 * @rx_ring: Rx descriptor ring packet is being transacted on
176 * @rx_desc: pointer to the EOP Rx descriptor
177 * @skb: pointer to current skb being populated
178 * @ptype: the packet type decoded by hardware
179 *
180 * This function checks the ring, descriptor, and packet information in
181 * order to populate the hash, checksum, VLAN, protocol, and
182 * other fields within the skb.
183 */
184void
185ice_process_skb_fields(struct ice_rx_ring *rx_ring,
186 union ice_32b_rx_flex_desc *rx_desc,
187 struct sk_buff *skb, u16 ptype)
188{
189 ice_rx_hash(rx_ring, rx_desc, skb, ptype);
190
191 /* modifies the skb - consumes the enet header */
192 skb->protocol = eth_type_trans(skb, rx_ring->netdev);
193
194 ice_rx_csum(rx_ring, skb, rx_desc, ptype);
195
196 if (rx_ring->ptp_rx)
197 ice_ptp_rx_hwtstamp(rx_ring, rx_desc, skb);
198}
199
200/**
201 * ice_receive_skb - Send a completed packet up the stack
202 * @rx_ring: Rx ring in play
203 * @skb: packet to send up
204 * @vlan_tag: VLAN tag for packet
205 *
206 * This function sends the completed packet (via. skb) up the stack using
207 * gro receive functions (with/without VLAN tag)
208 */
209void
210ice_receive_skb(struct ice_rx_ring *rx_ring, struct sk_buff *skb, u16 vlan_tag)
211{
212 netdev_features_t features = rx_ring->netdev->features;
213 bool non_zero_vlan = !!(vlan_tag & VLAN_VID_MASK);
214
215 if ((features & NETIF_F_HW_VLAN_CTAG_RX) && non_zero_vlan)
216 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
217 else if ((features & NETIF_F_HW_VLAN_STAG_RX) && non_zero_vlan)
218 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021AD), vlan_tag);
219
220 napi_gro_receive(&rx_ring->q_vector->napi, skb);
221}
222
223/**
224 * ice_clean_xdp_irq - Reclaim resources after transmit completes on XDP ring
225 * @xdp_ring: XDP ring to clean
226 */
227static void ice_clean_xdp_irq(struct ice_tx_ring *xdp_ring)
228{
229 unsigned int total_bytes = 0, total_pkts = 0;
230 u16 tx_thresh = ICE_RING_QUARTER(xdp_ring);
231 u16 ntc = xdp_ring->next_to_clean;
232 struct ice_tx_desc *next_dd_desc;
233 u16 next_dd = xdp_ring->next_dd;
234 struct ice_tx_buf *tx_buf;
235 int i;
236
237 next_dd_desc = ICE_TX_DESC(xdp_ring, next_dd);
238 if (!(next_dd_desc->cmd_type_offset_bsz &
239 cpu_to_le64(ICE_TX_DESC_DTYPE_DESC_DONE)))
240 return;
241
242 for (i = 0; i < tx_thresh; i++) {
243 tx_buf = &xdp_ring->tx_buf[ntc];
244
245 total_bytes += tx_buf->bytecount;
246 /* normally tx_buf->gso_segs was taken but at this point
247 * it's always 1 for us
248 */
249 total_pkts++;
250
251 page_frag_free(tx_buf->raw_buf);
252 dma_unmap_single(xdp_ring->dev, dma_unmap_addr(tx_buf, dma),
253 dma_unmap_len(tx_buf, len), DMA_TO_DEVICE);
254 dma_unmap_len_set(tx_buf, len, 0);
255 tx_buf->raw_buf = NULL;
256
257 ntc++;
258 if (ntc >= xdp_ring->count)
259 ntc = 0;
260 }
261
262 next_dd_desc->cmd_type_offset_bsz = 0;
263 xdp_ring->next_dd = xdp_ring->next_dd + tx_thresh;
264 if (xdp_ring->next_dd > xdp_ring->count)
265 xdp_ring->next_dd = tx_thresh - 1;
266 xdp_ring->next_to_clean = ntc;
267 ice_update_tx_ring_stats(xdp_ring, total_pkts, total_bytes);
268}
269
270/**
271 * ice_xmit_xdp_ring - submit single packet to XDP ring for transmission
272 * @data: packet data pointer
273 * @size: packet data size
274 * @xdp_ring: XDP ring for transmission
275 */
276int ice_xmit_xdp_ring(void *data, u16 size, struct ice_tx_ring *xdp_ring)
277{
278 u16 tx_thresh = ICE_RING_QUARTER(xdp_ring);
279 u16 i = xdp_ring->next_to_use;
280 struct ice_tx_desc *tx_desc;
281 struct ice_tx_buf *tx_buf;
282 dma_addr_t dma;
283
284 if (ICE_DESC_UNUSED(xdp_ring) < tx_thresh)
285 ice_clean_xdp_irq(xdp_ring);
286
287 if (!unlikely(ICE_DESC_UNUSED(xdp_ring))) {
288 xdp_ring->ring_stats->tx_stats.tx_busy++;
289 return ICE_XDP_CONSUMED;
290 }
291
292 dma = dma_map_single(xdp_ring->dev, data, size, DMA_TO_DEVICE);
293 if (dma_mapping_error(xdp_ring->dev, dma))
294 return ICE_XDP_CONSUMED;
295
296 tx_buf = &xdp_ring->tx_buf[i];
297 tx_buf->bytecount = size;
298 tx_buf->gso_segs = 1;
299 tx_buf->raw_buf = data;
300
301 /* record length, and DMA address */
302 dma_unmap_len_set(tx_buf, len, size);
303 dma_unmap_addr_set(tx_buf, dma, dma);
304
305 tx_desc = ICE_TX_DESC(xdp_ring, i);
306 tx_desc->buf_addr = cpu_to_le64(dma);
307 tx_desc->cmd_type_offset_bsz = ice_build_ctob(ICE_TX_DESC_CMD_EOP, 0,
308 size, 0);
309
310 xdp_ring->xdp_tx_active++;
311 i++;
312 if (i == xdp_ring->count) {
313 i = 0;
314 tx_desc = ICE_TX_DESC(xdp_ring, xdp_ring->next_rs);
315 tx_desc->cmd_type_offset_bsz |=
316 cpu_to_le64(ICE_TX_DESC_CMD_RS << ICE_TXD_QW1_CMD_S);
317 xdp_ring->next_rs = tx_thresh - 1;
318 }
319 xdp_ring->next_to_use = i;
320
321 if (i > xdp_ring->next_rs) {
322 tx_desc = ICE_TX_DESC(xdp_ring, xdp_ring->next_rs);
323 tx_desc->cmd_type_offset_bsz |=
324 cpu_to_le64(ICE_TX_DESC_CMD_RS << ICE_TXD_QW1_CMD_S);
325 xdp_ring->next_rs += tx_thresh;
326 }
327
328 return ICE_XDP_TX;
329}
330
331/**
332 * ice_xmit_xdp_buff - convert an XDP buffer to an XDP frame and send it
333 * @xdp: XDP buffer
334 * @xdp_ring: XDP Tx ring
335 *
336 * Returns negative on failure, 0 on success.
337 */
338int ice_xmit_xdp_buff(struct xdp_buff *xdp, struct ice_tx_ring *xdp_ring)
339{
340 struct xdp_frame *xdpf = xdp_convert_buff_to_frame(xdp);
341
342 if (unlikely(!xdpf))
343 return ICE_XDP_CONSUMED;
344
345 return ice_xmit_xdp_ring(xdpf->data, xdpf->len, xdp_ring);
346}
347
348/**
349 * ice_finalize_xdp_rx - Bump XDP Tx tail and/or flush redirect map
350 * @xdp_ring: XDP ring
351 * @xdp_res: Result of the receive batch
352 *
353 * This function bumps XDP Tx tail and/or flush redirect map, and
354 * should be called when a batch of packets has been processed in the
355 * napi loop.
356 */
357void ice_finalize_xdp_rx(struct ice_tx_ring *xdp_ring, unsigned int xdp_res)
358{
359 if (xdp_res & ICE_XDP_REDIR)
360 xdp_do_flush_map();
361
362 if (xdp_res & ICE_XDP_TX) {
363 if (static_branch_unlikely(&ice_xdp_locking_key))
364 spin_lock(&xdp_ring->tx_lock);
365 ice_xdp_ring_update_tail(xdp_ring);
366 if (static_branch_unlikely(&ice_xdp_locking_key))
367 spin_unlock(&xdp_ring->tx_lock);
368 }
369}