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9#ifndef AQ_RING_H
10#define AQ_RING_H
11
12#include "aq_common.h"
13
14struct page;
15struct aq_nic_cfg_s;
16
17struct aq_rxpage {
18 struct page *page;
19 dma_addr_t daddr;
20 unsigned int order;
21 unsigned int pg_off;
22};
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35
36struct __packed aq_ring_buff_s {
37 union {
38
39 dma_addr_t pa;
40
41 struct {
42 u32 rss_hash;
43 u16 next;
44 u8 is_hash_l4;
45 u8 rsvd1;
46 struct aq_rxpage rxdata;
47 u16 vlan_rx_tag;
48 };
49
50 struct {
51 dma_addr_t pa_eop;
52 struct sk_buff *skb;
53 };
54
55 struct {
56 u32 mss;
57 u8 len_l2;
58 u8 len_l3;
59 u8 len_l4;
60 u8 is_ipv6:1;
61 u8 rsvd2:7;
62 u32 len_pkt;
63 u16 vlan_tx_tag;
64 };
65 };
66 union {
67 struct {
68 u32 len:16;
69 u32 is_ip_cso:1;
70 u32 is_udp_cso:1;
71 u32 is_tcp_cso:1;
72 u32 is_cso_err:1;
73 u32 is_sop:1;
74 u32 is_eop:1;
75 u32 is_gso_tcp:1;
76 u32 is_gso_udp:1;
77 u32 is_mapped:1;
78 u32 is_cleaned:1;
79 u32 is_error:1;
80 u32 is_vlan:1;
81 u32 rsvd3:4;
82 u16 eop_index;
83 u16 rsvd4;
84 };
85 u64 flags;
86 };
87};
88
89struct aq_ring_stats_rx_s {
90 u64 errors;
91 u64 packets;
92 u64 bytes;
93 u64 lro_packets;
94 u64 jumbo_packets;
95 u64 pg_losts;
96 u64 pg_flips;
97 u64 pg_reuses;
98};
99
100struct aq_ring_stats_tx_s {
101 u64 errors;
102 u64 packets;
103 u64 bytes;
104 u64 queue_restarts;
105};
106
107union aq_ring_stats_s {
108 struct aq_ring_stats_rx_s rx;
109 struct aq_ring_stats_tx_s tx;
110};
111
112struct aq_ring_s {
113 struct aq_ring_buff_s *buff_ring;
114 u8 *dx_ring;
115 struct aq_nic_s *aq_nic;
116 unsigned int idx;
117 unsigned int hw_head;
118 unsigned int sw_head;
119 unsigned int sw_tail;
120 unsigned int size;
121 unsigned int dx_size;
122
123 unsigned int page_order;
124 union aq_ring_stats_s stats;
125 dma_addr_t dx_ring_pa;
126};
127
128struct aq_ring_param_s {
129 unsigned int vec_idx;
130 unsigned int cpu;
131 cpumask_t affinity_mask;
132};
133
134static inline void *aq_buf_vaddr(struct aq_rxpage *rxpage)
135{
136 return page_to_virt(rxpage->page) + rxpage->pg_off;
137}
138
139static inline dma_addr_t aq_buf_daddr(struct aq_rxpage *rxpage)
140{
141 return rxpage->daddr + rxpage->pg_off;
142}
143
144static inline unsigned int aq_ring_next_dx(struct aq_ring_s *self,
145 unsigned int dx)
146{
147 return (++dx >= self->size) ? 0U : dx;
148}
149
150static inline unsigned int aq_ring_avail_dx(struct aq_ring_s *self)
151{
152 return (((self->sw_tail >= self->sw_head)) ?
153 (self->size - 1) - self->sw_tail + self->sw_head :
154 self->sw_head - self->sw_tail - 1);
155}
156
157struct aq_ring_s *aq_ring_tx_alloc(struct aq_ring_s *self,
158 struct aq_nic_s *aq_nic,
159 unsigned int idx,
160 struct aq_nic_cfg_s *aq_nic_cfg);
161struct aq_ring_s *aq_ring_rx_alloc(struct aq_ring_s *self,
162 struct aq_nic_s *aq_nic,
163 unsigned int idx,
164 struct aq_nic_cfg_s *aq_nic_cfg);
165int aq_ring_init(struct aq_ring_s *self);
166void aq_ring_rx_deinit(struct aq_ring_s *self);
167void aq_ring_free(struct aq_ring_s *self);
168void aq_ring_update_queue_state(struct aq_ring_s *ring);
169void aq_ring_queue_wake(struct aq_ring_s *ring);
170void aq_ring_queue_stop(struct aq_ring_s *ring);
171bool aq_ring_tx_clean(struct aq_ring_s *self);
172int aq_ring_rx_clean(struct aq_ring_s *self,
173 struct napi_struct *napi,
174 int *work_done,
175 int budget);
176int aq_ring_rx_fill(struct aq_ring_s *self);
177
178struct aq_ring_s *aq_ring_hwts_rx_alloc(struct aq_ring_s *self,
179 struct aq_nic_s *aq_nic, unsigned int idx,
180 unsigned int size, unsigned int dx_size);
181void aq_ring_hwts_rx_clean(struct aq_ring_s *self, struct aq_nic_s *aq_nic);
182
183#endif
184