1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 #ifndef _RDS_IB_H 1 #ifndef _RDS_IB_H
3 #define _RDS_IB_H 2 #define _RDS_IB_H
4 3
5 #include <rdma/ib_verbs.h> 4 #include <rdma/ib_verbs.h>
6 #include <rdma/rdma_cm.h> 5 #include <rdma/rdma_cm.h>
7 #include <linux/interrupt.h> 6 #include <linux/interrupt.h>
8 #include <linux/pci.h> 7 #include <linux/pci.h>
9 #include <linux/slab.h> 8 #include <linux/slab.h>
10 #include "rds.h" 9 #include "rds.h"
11 #include "rdma_transport.h" 10 #include "rdma_transport.h"
12 11
13 #define RDS_IB_MAX_SGE 8 12 #define RDS_IB_MAX_SGE 8
14 #define RDS_IB_RECV_SGE 2 13 #define RDS_IB_RECV_SGE 2
15 14
16 #define RDS_IB_DEFAULT_RECV_WR 1024 15 #define RDS_IB_DEFAULT_RECV_WR 1024
17 #define RDS_IB_DEFAULT_SEND_WR 256 16 #define RDS_IB_DEFAULT_SEND_WR 256
18 #define RDS_IB_DEFAULT_FR_WR 512 17 #define RDS_IB_DEFAULT_FR_WR 512
19 18
20 #define RDS_IB_DEFAULT_RETRY_COUNT 1 !! 19 #define RDS_IB_DEFAULT_RETRY_COUNT 2
21 20
22 #define RDS_IB_SUPPORTED_PROTOCOLS 0x0000 21 #define RDS_IB_SUPPORTED_PROTOCOLS 0x00000003 /* minor versions supported */
23 22
24 #define RDS_IB_RECYCLE_BATCH_COUNT 32 23 #define RDS_IB_RECYCLE_BATCH_COUNT 32
25 24
26 #define RDS_IB_WC_MAX 32 25 #define RDS_IB_WC_MAX 32
27 26
28 extern struct rw_semaphore rds_ib_devices_lock 27 extern struct rw_semaphore rds_ib_devices_lock;
29 extern struct list_head rds_ib_devices; 28 extern struct list_head rds_ib_devices;
30 29
31 /* 30 /*
32 * IB posts RDS_FRAG_SIZE fragments of pages t 31 * IB posts RDS_FRAG_SIZE fragments of pages to the receive queues to
33 * try and minimize the amount of memory tied 32 * try and minimize the amount of memory tied up both the device and
34 * socket receive queues. 33 * socket receive queues.
35 */ 34 */
36 struct rds_page_frag { 35 struct rds_page_frag {
37 struct list_head f_item; 36 struct list_head f_item;
38 struct list_head f_cache_entry; 37 struct list_head f_cache_entry;
39 struct scatterlist f_sg; 38 struct scatterlist f_sg;
40 }; 39 };
41 40
42 struct rds_ib_incoming { 41 struct rds_ib_incoming {
43 struct list_head ii_frags; 42 struct list_head ii_frags;
44 struct list_head ii_cache_entry 43 struct list_head ii_cache_entry;
45 struct rds_incoming ii_inc; 44 struct rds_incoming ii_inc;
46 }; 45 };
47 46
48 struct rds_ib_cache_head { 47 struct rds_ib_cache_head {
49 struct list_head *first; 48 struct list_head *first;
50 unsigned long count; 49 unsigned long count;
51 }; 50 };
52 51
53 struct rds_ib_refill_cache { 52 struct rds_ib_refill_cache {
54 struct rds_ib_cache_head __percpu *per 53 struct rds_ib_cache_head __percpu *percpu;
55 struct list_head *xfer; 54 struct list_head *xfer;
56 struct list_head *ready; 55 struct list_head *ready;
57 }; 56 };
58 57
59 /* This is the common structure for the IB pri <<
60 * an RDS connection. The exchange is differe <<
61 * The reason is that the address size is diff <<
62 * exchanged are in the beginning of the struc <<
63 * for interoperability if same structure is u <<
64 */ <<
65 struct rds_ib_conn_priv_cmn { <<
66 u8 ricpc_protocol <<
67 u8 ricpc_protocol <<
68 __be16 ricpc_protocol <<
69 u8 ricpc_dp_toss; <<
70 u8 ripc_reserved1 <<
71 __be16 ripc_reserved2 <<
72 __be64 ricpc_ack_seq; <<
73 __be32 ricpc_credit; <<
74 }; <<
75 <<
76 struct rds_ib_connect_private { 58 struct rds_ib_connect_private {
77 /* Add new fields at the end, and don' 59 /* Add new fields at the end, and don't permute existing fields. */
78 __be32 dp_sad !! 60 __be32 dp_saddr;
79 __be32 dp_dad !! 61 __be32 dp_daddr;
80 struct rds_ib_conn_priv_cmn dp_cmn !! 62 u8 dp_protocol_major;
81 }; !! 63 u8 dp_protocol_minor;
82 !! 64 __be16 dp_protocol_minor_mask; /* bitmask */
83 struct rds6_ib_connect_private { !! 65 __be32 dp_reserved1;
84 /* Add new fields at the end, and don' !! 66 __be64 dp_ack_seq;
85 struct in6_addr dp_sad !! 67 __be32 dp_credit; /* non-zero enables flow ctl */
86 struct in6_addr dp_dad <<
87 struct rds_ib_conn_priv_cmn dp_cmn <<
88 }; <<
89 <<
90 #define dp_protocol_major dp_cmn.ricpc_p <<
91 #define dp_protocol_minor dp_cmn.ricpc_p <<
92 #define dp_protocol_minor_mask dp_cmn.ricpc_p <<
93 #define dp_ack_seq dp_cmn.ricpc_a <<
94 #define dp_credit dp_cmn.ricpc_c <<
95 <<
96 union rds_ib_conn_priv { <<
97 struct rds_ib_connect_private ricp_v <<
98 struct rds6_ib_connect_private ricp_v <<
99 }; 68 };
100 69
101 struct rds_ib_send_work { 70 struct rds_ib_send_work {
102 void *s_op; 71 void *s_op;
103 union { 72 union {
104 struct ib_send_wr s_wr; 73 struct ib_send_wr s_wr;
105 struct ib_rdma_wr s_rdma 74 struct ib_rdma_wr s_rdma_wr;
106 struct ib_atomic_wr s_atom 75 struct ib_atomic_wr s_atomic_wr;
107 }; 76 };
108 struct ib_sge s_sge[RDS_IB_M 77 struct ib_sge s_sge[RDS_IB_MAX_SGE];
109 unsigned long s_queued; 78 unsigned long s_queued;
110 }; 79 };
111 80
112 struct rds_ib_recv_work { 81 struct rds_ib_recv_work {
113 struct rds_ib_incoming *r_ibinc; 82 struct rds_ib_incoming *r_ibinc;
114 struct rds_page_frag *r_frag; 83 struct rds_page_frag *r_frag;
115 struct ib_recv_wr r_wr; 84 struct ib_recv_wr r_wr;
116 struct ib_sge r_sge[2]; 85 struct ib_sge r_sge[2];
117 }; 86 };
118 87
119 struct rds_ib_work_ring { 88 struct rds_ib_work_ring {
120 u32 w_nr; 89 u32 w_nr;
121 u32 w_alloc_ptr; 90 u32 w_alloc_ptr;
122 u32 w_alloc_ctr; 91 u32 w_alloc_ctr;
123 u32 w_free_ptr; 92 u32 w_free_ptr;
124 atomic_t w_free_ctr; 93 atomic_t w_free_ctr;
125 }; 94 };
126 95
127 /* Rings are posted with all the allocations t 96 /* Rings are posted with all the allocations they'll need to queue the
128 * incoming message to the receiving socket so 97 * incoming message to the receiving socket so this can't fail.
129 * All fragments start with a header, so we ca 98 * All fragments start with a header, so we can make sure we're not receiving
130 * garbage, and we can tell a small 8 byte fra 99 * garbage, and we can tell a small 8 byte fragment from an ACK frame.
131 */ 100 */
132 struct rds_ib_ack_state { 101 struct rds_ib_ack_state {
133 u64 ack_next; 102 u64 ack_next;
134 u64 ack_recv; 103 u64 ack_recv;
135 unsigned int ack_required:1; 104 unsigned int ack_required:1;
136 unsigned int ack_next_valid:1; 105 unsigned int ack_next_valid:1;
137 unsigned int ack_recv_valid:1; 106 unsigned int ack_recv_valid:1;
138 }; 107 };
139 108
140 109
141 struct rds_ib_device; 110 struct rds_ib_device;
142 111
143 struct rds_ib_connection { 112 struct rds_ib_connection {
144 113
145 struct list_head ib_node; 114 struct list_head ib_node;
146 struct rds_ib_device *rds_ibdev; 115 struct rds_ib_device *rds_ibdev;
147 struct rds_connection *conn; 116 struct rds_connection *conn;
148 117
149 /* alphabet soup, IBTA style */ 118 /* alphabet soup, IBTA style */
150 struct rdma_cm_id *i_cm_id; 119 struct rdma_cm_id *i_cm_id;
151 struct ib_pd *i_pd; 120 struct ib_pd *i_pd;
152 struct ib_cq *i_send_cq; 121 struct ib_cq *i_send_cq;
153 struct ib_cq *i_recv_cq; 122 struct ib_cq *i_recv_cq;
154 struct ib_wc i_send_wc[RDS_ 123 struct ib_wc i_send_wc[RDS_IB_WC_MAX];
155 struct ib_wc i_recv_wc[RDS_ 124 struct ib_wc i_recv_wc[RDS_IB_WC_MAX];
156 125
157 /* To control the number of wrs from f 126 /* To control the number of wrs from fastreg */
158 atomic_t i_fastreg_wrs; 127 atomic_t i_fastreg_wrs;
159 atomic_t i_fastreg_inus <<
160 128
161 /* interrupt handling */ 129 /* interrupt handling */
162 struct tasklet_struct i_send_tasklet 130 struct tasklet_struct i_send_tasklet;
163 struct tasklet_struct i_recv_tasklet 131 struct tasklet_struct i_recv_tasklet;
164 132
165 /* tx */ 133 /* tx */
166 struct rds_ib_work_ring i_send_ring; 134 struct rds_ib_work_ring i_send_ring;
167 struct rm_data_op *i_data_op; 135 struct rm_data_op *i_data_op;
168 struct rds_header **i_send_hdrs; !! 136 struct rds_header *i_send_hdrs;
169 dma_addr_t *i_send_hdrs_d !! 137 u64 i_send_hdrs_dma;
170 struct rds_ib_send_work *i_sends; 138 struct rds_ib_send_work *i_sends;
171 atomic_t i_signaled_sen 139 atomic_t i_signaled_sends;
172 140
173 /* rx */ 141 /* rx */
174 struct mutex i_recv_mutex; 142 struct mutex i_recv_mutex;
175 struct rds_ib_work_ring i_recv_ring; 143 struct rds_ib_work_ring i_recv_ring;
176 struct rds_ib_incoming *i_ibinc; 144 struct rds_ib_incoming *i_ibinc;
177 u32 i_recv_data_re 145 u32 i_recv_data_rem;
178 struct rds_header **i_recv_hdrs; !! 146 struct rds_header *i_recv_hdrs;
179 dma_addr_t *i_recv_hdrs_d !! 147 u64 i_recv_hdrs_dma;
180 struct rds_ib_recv_work *i_recvs; 148 struct rds_ib_recv_work *i_recvs;
181 u64 i_ack_recv; 149 u64 i_ack_recv; /* last ACK received */
182 struct rds_ib_refill_cache i_cache_inc 150 struct rds_ib_refill_cache i_cache_incs;
183 struct rds_ib_refill_cache i_cache_fra 151 struct rds_ib_refill_cache i_cache_frags;
184 atomic_t i_cache_allocs <<
185 152
186 /* sending acks */ 153 /* sending acks */
187 unsigned long i_ack_flags; 154 unsigned long i_ack_flags;
188 #ifdef KERNEL_HAS_ATOMIC64 155 #ifdef KERNEL_HAS_ATOMIC64
189 atomic64_t i_ack_next; 156 atomic64_t i_ack_next; /* next ACK to send */
190 #else 157 #else
191 spinlock_t i_ack_lock; 158 spinlock_t i_ack_lock; /* protect i_ack_next */
192 u64 i_ack_next; 159 u64 i_ack_next; /* next ACK to send */
193 #endif 160 #endif
194 struct rds_header *i_ack; 161 struct rds_header *i_ack;
195 struct ib_send_wr i_ack_wr; 162 struct ib_send_wr i_ack_wr;
196 struct ib_sge i_ack_sge; 163 struct ib_sge i_ack_sge;
197 dma_addr_t i_ack_dma; !! 164 u64 i_ack_dma;
198 unsigned long i_ack_queued; 165 unsigned long i_ack_queued;
199 166
200 /* Flow control related information 167 /* Flow control related information
201 * 168 *
202 * Our algorithm uses a pair variables 169 * Our algorithm uses a pair variables that we need to access
203 * atomically - one for the send credi 170 * atomically - one for the send credits, and one posted
204 * recv credits we need to transfer to 171 * recv credits we need to transfer to remote.
205 * Rather than protect them using a sl 172 * Rather than protect them using a slow spinlock, we put both into
206 * a single atomic_t and update it usi 173 * a single atomic_t and update it using cmpxchg
207 */ 174 */
208 atomic_t i_credits; 175 atomic_t i_credits;
209 176
210 /* Protocol version specific informati 177 /* Protocol version specific information */
211 unsigned int i_flowctl:1; 178 unsigned int i_flowctl:1; /* enable/disable flow ctl */
212 179
213 /* Batched completions */ 180 /* Batched completions */
214 unsigned int i_unsignaled_w 181 unsigned int i_unsignaled_wrs;
215 <<
216 /* Endpoint role in connection */ <<
217 bool i_active_side; <<
218 atomic_t i_cq_quiesce; <<
219 <<
220 /* Send/Recv vectors */ <<
221 int i_scq_vector; <<
222 int i_rcq_vector; <<
223 u8 i_sl; <<
224 }; 182 };
225 183
226 /* This assumes that atomic_t is at least 32 b 184 /* This assumes that atomic_t is at least 32 bits */
227 #define IB_GET_SEND_CREDITS(v) ((v) & 0xffff) 185 #define IB_GET_SEND_CREDITS(v) ((v) & 0xffff)
228 #define IB_GET_POST_CREDITS(v) ((v) >> 16) 186 #define IB_GET_POST_CREDITS(v) ((v) >> 16)
229 #define IB_SET_SEND_CREDITS(v) ((v) & 0xffff) 187 #define IB_SET_SEND_CREDITS(v) ((v) & 0xffff)
230 #define IB_SET_POST_CREDITS(v) ((v) << 16) 188 #define IB_SET_POST_CREDITS(v) ((v) << 16)
231 189
232 struct rds_ib_ipaddr { 190 struct rds_ib_ipaddr {
233 struct list_head list; 191 struct list_head list;
234 __be32 ipaddr; 192 __be32 ipaddr;
235 struct rcu_head rcu; 193 struct rcu_head rcu;
236 }; 194 };
237 195
238 enum { 196 enum {
239 RDS_IB_MR_8K_POOL, 197 RDS_IB_MR_8K_POOL,
240 RDS_IB_MR_1M_POOL, 198 RDS_IB_MR_1M_POOL,
241 }; 199 };
242 200
243 struct rds_ib_device { 201 struct rds_ib_device {
244 struct list_head list; 202 struct list_head list;
245 struct list_head ipaddr_list; 203 struct list_head ipaddr_list;
246 struct list_head conn_list; 204 struct list_head conn_list;
247 struct ib_device *dev; 205 struct ib_device *dev;
248 struct ib_pd *pd; 206 struct ib_pd *pd;
249 u8 odp_capable:1; !! 207 bool has_fmr;
>> 208 bool has_fr;
>> 209 bool use_fastreg;
250 210
251 unsigned int max_mrs; 211 unsigned int max_mrs;
252 struct rds_ib_mr_pool *mr_1m_pool; 212 struct rds_ib_mr_pool *mr_1m_pool;
253 struct rds_ib_mr_pool *mr_8k_pool; 213 struct rds_ib_mr_pool *mr_8k_pool;
>> 214 unsigned int fmr_max_remaps;
254 unsigned int max_8k_mrs; 215 unsigned int max_8k_mrs;
255 unsigned int max_1m_mrs; 216 unsigned int max_1m_mrs;
256 int max_sge; 217 int max_sge;
257 unsigned int max_wrs; 218 unsigned int max_wrs;
258 unsigned int max_initiator_ 219 unsigned int max_initiator_depth;
259 unsigned int max_responder_ 220 unsigned int max_responder_resources;
260 spinlock_t spinlock; 221 spinlock_t spinlock; /* protect the above */
261 refcount_t refcount; !! 222 atomic_t refcount;
262 struct work_struct free_work; 223 struct work_struct free_work;
263 int *vector_load; <<
264 }; 224 };
265 225
>> 226 #define ibdev_to_node(ibdev) dev_to_node(ibdev->dma_device)
266 #define rdsibdev_to_node(rdsibdev) ibdev_to_no 227 #define rdsibdev_to_node(rdsibdev) ibdev_to_node(rdsibdev->dev)
267 228
268 /* bits for i_ack_flags */ 229 /* bits for i_ack_flags */
269 #define IB_ACK_IN_FLIGHT 0 230 #define IB_ACK_IN_FLIGHT 0
270 #define IB_ACK_REQUESTED 1 231 #define IB_ACK_REQUESTED 1
271 232
272 /* Magic WR_ID for ACKs */ 233 /* Magic WR_ID for ACKs */
273 #define RDS_IB_ACK_WR_ID (~(u64) 0) 234 #define RDS_IB_ACK_WR_ID (~(u64) 0)
274 235
275 struct rds_ib_statistics { 236 struct rds_ib_statistics {
276 uint64_t s_ib_connect_raced; 237 uint64_t s_ib_connect_raced;
277 uint64_t s_ib_listen_closed_sta 238 uint64_t s_ib_listen_closed_stale;
278 uint64_t s_ib_evt_handler_call; 239 uint64_t s_ib_evt_handler_call;
279 uint64_t s_ib_tasklet_call; 240 uint64_t s_ib_tasklet_call;
280 uint64_t s_ib_tx_cq_event; 241 uint64_t s_ib_tx_cq_event;
281 uint64_t s_ib_tx_ring_full; 242 uint64_t s_ib_tx_ring_full;
282 uint64_t s_ib_tx_throttle; 243 uint64_t s_ib_tx_throttle;
283 uint64_t s_ib_tx_sg_mapping_fai 244 uint64_t s_ib_tx_sg_mapping_failure;
284 uint64_t s_ib_tx_stalled; 245 uint64_t s_ib_tx_stalled;
285 uint64_t s_ib_tx_credit_updates 246 uint64_t s_ib_tx_credit_updates;
286 uint64_t s_ib_rx_cq_event; 247 uint64_t s_ib_rx_cq_event;
287 uint64_t s_ib_rx_ring_empty; 248 uint64_t s_ib_rx_ring_empty;
288 uint64_t s_ib_rx_refill_from_cq 249 uint64_t s_ib_rx_refill_from_cq;
289 uint64_t s_ib_rx_refill_from_th 250 uint64_t s_ib_rx_refill_from_thread;
290 uint64_t s_ib_rx_alloc_limit; 251 uint64_t s_ib_rx_alloc_limit;
291 uint64_t s_ib_rx_total_frags; <<
292 uint64_t s_ib_rx_total_incs; <<
293 uint64_t s_ib_rx_credit_updates 252 uint64_t s_ib_rx_credit_updates;
294 uint64_t s_ib_ack_sent; 253 uint64_t s_ib_ack_sent;
295 uint64_t s_ib_ack_send_failure; 254 uint64_t s_ib_ack_send_failure;
296 uint64_t s_ib_ack_send_delayed; 255 uint64_t s_ib_ack_send_delayed;
297 uint64_t s_ib_ack_send_piggybac 256 uint64_t s_ib_ack_send_piggybacked;
298 uint64_t s_ib_ack_received; 257 uint64_t s_ib_ack_received;
299 uint64_t s_ib_rdma_mr_8k_alloc; 258 uint64_t s_ib_rdma_mr_8k_alloc;
300 uint64_t s_ib_rdma_mr_8k_free; 259 uint64_t s_ib_rdma_mr_8k_free;
301 uint64_t s_ib_rdma_mr_8k_used; 260 uint64_t s_ib_rdma_mr_8k_used;
302 uint64_t s_ib_rdma_mr_8k_pool_f 261 uint64_t s_ib_rdma_mr_8k_pool_flush;
303 uint64_t s_ib_rdma_mr_8k_pool_w 262 uint64_t s_ib_rdma_mr_8k_pool_wait;
304 uint64_t s_ib_rdma_mr_8k_pool_d 263 uint64_t s_ib_rdma_mr_8k_pool_depleted;
305 uint64_t s_ib_rdma_mr_1m_alloc; 264 uint64_t s_ib_rdma_mr_1m_alloc;
306 uint64_t s_ib_rdma_mr_1m_free; 265 uint64_t s_ib_rdma_mr_1m_free;
307 uint64_t s_ib_rdma_mr_1m_used; 266 uint64_t s_ib_rdma_mr_1m_used;
308 uint64_t s_ib_rdma_mr_1m_pool_f 267 uint64_t s_ib_rdma_mr_1m_pool_flush;
309 uint64_t s_ib_rdma_mr_1m_pool_w 268 uint64_t s_ib_rdma_mr_1m_pool_wait;
310 uint64_t s_ib_rdma_mr_1m_pool_d 269 uint64_t s_ib_rdma_mr_1m_pool_depleted;
311 uint64_t s_ib_rdma_mr_8k_reused 270 uint64_t s_ib_rdma_mr_8k_reused;
312 uint64_t s_ib_rdma_mr_1m_reused 271 uint64_t s_ib_rdma_mr_1m_reused;
313 uint64_t s_ib_atomic_cswp; 272 uint64_t s_ib_atomic_cswp;
314 uint64_t s_ib_atomic_fadd; 273 uint64_t s_ib_atomic_fadd;
315 uint64_t s_ib_recv_added_to_cac <<
316 uint64_t s_ib_recv_removed_from <<
317 }; 274 };
318 275
319 extern struct workqueue_struct *rds_ib_wq; 276 extern struct workqueue_struct *rds_ib_wq;
320 277
321 /* 278 /*
322 * Fake ib_dma_sync_sg_for_{cpu,device} as lon 279 * Fake ib_dma_sync_sg_for_{cpu,device} as long as ib_verbs.h
323 * doesn't define it. 280 * doesn't define it.
324 */ 281 */
325 static inline void rds_ib_dma_sync_sg_for_cpu( 282 static inline void rds_ib_dma_sync_sg_for_cpu(struct ib_device *dev,
326 283 struct scatterlist *sglist,
327 284 unsigned int sg_dma_len,
328 285 int direction)
329 { 286 {
330 struct scatterlist *sg; 287 struct scatterlist *sg;
331 unsigned int i; 288 unsigned int i;
332 289
333 for_each_sg(sglist, sg, sg_dma_len, i) 290 for_each_sg(sglist, sg, sg_dma_len, i) {
334 ib_dma_sync_single_for_cpu(dev !! 291 ib_dma_sync_single_for_cpu(dev,
335 sg_ !! 292 ib_sg_dma_address(dev, sg),
>> 293 ib_sg_dma_len(dev, sg),
>> 294 direction);
336 } 295 }
337 } 296 }
338 #define ib_dma_sync_sg_for_cpu rds_ib_dma_syn 297 #define ib_dma_sync_sg_for_cpu rds_ib_dma_sync_sg_for_cpu
339 298
340 static inline void rds_ib_dma_sync_sg_for_devi 299 static inline void rds_ib_dma_sync_sg_for_device(struct ib_device *dev,
341 300 struct scatterlist *sglist,
342 301 unsigned int sg_dma_len,
343 302 int direction)
344 { 303 {
345 struct scatterlist *sg; 304 struct scatterlist *sg;
346 unsigned int i; 305 unsigned int i;
347 306
348 for_each_sg(sglist, sg, sg_dma_len, i) 307 for_each_sg(sglist, sg, sg_dma_len, i) {
349 ib_dma_sync_single_for_device( !! 308 ib_dma_sync_single_for_device(dev,
350 !! 309 ib_sg_dma_address(dev, sg),
>> 310 ib_sg_dma_len(dev, sg),
>> 311 direction);
351 } 312 }
352 } 313 }
353 #define ib_dma_sync_sg_for_device rds_ib 314 #define ib_dma_sync_sg_for_device rds_ib_dma_sync_sg_for_device
354 315
355 316
356 /* ib.c */ 317 /* ib.c */
357 extern struct rds_transport rds_ib_transport; 318 extern struct rds_transport rds_ib_transport;
358 struct rds_ib_device *rds_ib_get_client_data(s 319 struct rds_ib_device *rds_ib_get_client_data(struct ib_device *device);
359 void rds_ib_dev_put(struct rds_ib_device *rds_ 320 void rds_ib_dev_put(struct rds_ib_device *rds_ibdev);
360 extern struct ib_client rds_ib_client; 321 extern struct ib_client rds_ib_client;
361 322
362 extern unsigned int rds_ib_retry_count; 323 extern unsigned int rds_ib_retry_count;
363 324
364 extern spinlock_t ib_nodev_conns_lock; 325 extern spinlock_t ib_nodev_conns_lock;
365 extern struct list_head ib_nodev_conns; 326 extern struct list_head ib_nodev_conns;
366 327
367 /* ib_cm.c */ 328 /* ib_cm.c */
368 int rds_ib_conn_alloc(struct rds_connection *c 329 int rds_ib_conn_alloc(struct rds_connection *conn, gfp_t gfp);
369 void rds_ib_conn_free(void *arg); 330 void rds_ib_conn_free(void *arg);
370 int rds_ib_conn_path_connect(struct rds_conn_p 331 int rds_ib_conn_path_connect(struct rds_conn_path *cp);
371 void rds_ib_conn_path_shutdown(struct rds_conn 332 void rds_ib_conn_path_shutdown(struct rds_conn_path *cp);
>> 333 void rds_ib_state_change(struct sock *sk);
>> 334 int rds_ib_listen_init(void);
>> 335 void rds_ib_listen_stop(void);
372 __printf(2, 3) 336 __printf(2, 3)
373 void __rds_ib_conn_error(struct rds_connection 337 void __rds_ib_conn_error(struct rds_connection *conn, const char *, ...);
374 int rds_ib_cm_handle_connect(struct rdma_cm_id 338 int rds_ib_cm_handle_connect(struct rdma_cm_id *cm_id,
375 struct rdma_cm_ev !! 339 struct rdma_cm_event *event);
376 int rds_ib_cm_initiate_connect(struct rdma_cm_ !! 340 int rds_ib_cm_initiate_connect(struct rdma_cm_id *cm_id);
377 void rds_ib_cm_connect_complete(struct rds_con 341 void rds_ib_cm_connect_complete(struct rds_connection *conn,
378 struct rdma_cm 342 struct rdma_cm_event *event);
379 343
>> 344
380 #define rds_ib_conn_error(conn, fmt...) \ 345 #define rds_ib_conn_error(conn, fmt...) \
381 __rds_ib_conn_error(conn, KERN_WARNING 346 __rds_ib_conn_error(conn, KERN_WARNING "RDS/IB: " fmt)
382 347
383 /* ib_rdma.c */ 348 /* ib_rdma.c */
384 int rds_ib_update_ipaddr(struct rds_ib_device !! 349 int rds_ib_update_ipaddr(struct rds_ib_device *rds_ibdev, __be32 ipaddr);
385 struct in6_addr *ipad <<
386 void rds_ib_add_conn(struct rds_ib_device *rds 350 void rds_ib_add_conn(struct rds_ib_device *rds_ibdev, struct rds_connection *conn);
387 void rds_ib_remove_conn(struct rds_ib_device * 351 void rds_ib_remove_conn(struct rds_ib_device *rds_ibdev, struct rds_connection *conn);
388 void rds_ib_destroy_nodev_conns(void); 352 void rds_ib_destroy_nodev_conns(void);
389 void rds_ib_mr_cqe_handler(struct rds_ib_conne 353 void rds_ib_mr_cqe_handler(struct rds_ib_connection *ic, struct ib_wc *wc);
390 354
391 /* ib_recv.c */ 355 /* ib_recv.c */
392 int rds_ib_recv_init(void); 356 int rds_ib_recv_init(void);
393 void rds_ib_recv_exit(void); 357 void rds_ib_recv_exit(void);
394 int rds_ib_recv_path(struct rds_conn_path *con 358 int rds_ib_recv_path(struct rds_conn_path *conn);
395 int rds_ib_recv_alloc_caches(struct rds_ib_con !! 359 int rds_ib_recv_alloc_caches(struct rds_ib_connection *ic);
396 void rds_ib_recv_free_caches(struct rds_ib_con 360 void rds_ib_recv_free_caches(struct rds_ib_connection *ic);
397 void rds_ib_recv_refill(struct rds_connection 361 void rds_ib_recv_refill(struct rds_connection *conn, int prefill, gfp_t gfp);
398 void rds_ib_inc_free(struct rds_incoming *inc) 362 void rds_ib_inc_free(struct rds_incoming *inc);
399 int rds_ib_inc_copy_to_user(struct rds_incomin 363 int rds_ib_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to);
400 void rds_ib_recv_cqe_handler(struct rds_ib_con 364 void rds_ib_recv_cqe_handler(struct rds_ib_connection *ic, struct ib_wc *wc,
401 struct rds_ib_ack 365 struct rds_ib_ack_state *state);
>> 366 void rds_ib_recv_tasklet_fn(unsigned long data);
402 void rds_ib_recv_init_ring(struct rds_ib_conne 367 void rds_ib_recv_init_ring(struct rds_ib_connection *ic);
403 void rds_ib_recv_clear_ring(struct rds_ib_conn 368 void rds_ib_recv_clear_ring(struct rds_ib_connection *ic);
404 void rds_ib_recv_init_ack(struct rds_ib_connec 369 void rds_ib_recv_init_ack(struct rds_ib_connection *ic);
405 void rds_ib_attempt_ack(struct rds_ib_connecti 370 void rds_ib_attempt_ack(struct rds_ib_connection *ic);
406 void rds_ib_ack_send_complete(struct rds_ib_co 371 void rds_ib_ack_send_complete(struct rds_ib_connection *ic);
407 u64 rds_ib_piggyb_ack(struct rds_ib_connection 372 u64 rds_ib_piggyb_ack(struct rds_ib_connection *ic);
408 void rds_ib_set_ack(struct rds_ib_connection * 373 void rds_ib_set_ack(struct rds_ib_connection *ic, u64 seq, int ack_required);
409 374
410 /* ib_ring.c */ 375 /* ib_ring.c */
411 void rds_ib_ring_init(struct rds_ib_work_ring 376 void rds_ib_ring_init(struct rds_ib_work_ring *ring, u32 nr);
412 void rds_ib_ring_resize(struct rds_ib_work_rin 377 void rds_ib_ring_resize(struct rds_ib_work_ring *ring, u32 nr);
413 u32 rds_ib_ring_alloc(struct rds_ib_work_ring 378 u32 rds_ib_ring_alloc(struct rds_ib_work_ring *ring, u32 val, u32 *pos);
414 void rds_ib_ring_free(struct rds_ib_work_ring 379 void rds_ib_ring_free(struct rds_ib_work_ring *ring, u32 val);
415 void rds_ib_ring_unalloc(struct rds_ib_work_ri 380 void rds_ib_ring_unalloc(struct rds_ib_work_ring *ring, u32 val);
416 int rds_ib_ring_empty(struct rds_ib_work_ring 381 int rds_ib_ring_empty(struct rds_ib_work_ring *ring);
417 int rds_ib_ring_low(struct rds_ib_work_ring *r 382 int rds_ib_ring_low(struct rds_ib_work_ring *ring);
418 u32 rds_ib_ring_oldest(struct rds_ib_work_ring 383 u32 rds_ib_ring_oldest(struct rds_ib_work_ring *ring);
419 u32 rds_ib_ring_completed(struct rds_ib_work_r 384 u32 rds_ib_ring_completed(struct rds_ib_work_ring *ring, u32 wr_id, u32 oldest);
420 extern wait_queue_head_t rds_ib_ring_empty_wai 385 extern wait_queue_head_t rds_ib_ring_empty_wait;
421 386
422 /* ib_send.c */ 387 /* ib_send.c */
423 void rds_ib_xmit_path_complete(struct rds_conn 388 void rds_ib_xmit_path_complete(struct rds_conn_path *cp);
424 int rds_ib_xmit(struct rds_connection *conn, s 389 int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm,
425 unsigned int hdr_off, unsigned 390 unsigned int hdr_off, unsigned int sg, unsigned int off);
426 void rds_ib_send_cqe_handler(struct rds_ib_con 391 void rds_ib_send_cqe_handler(struct rds_ib_connection *ic, struct ib_wc *wc);
427 void rds_ib_send_init_ring(struct rds_ib_conne 392 void rds_ib_send_init_ring(struct rds_ib_connection *ic);
428 void rds_ib_send_clear_ring(struct rds_ib_conn 393 void rds_ib_send_clear_ring(struct rds_ib_connection *ic);
429 int rds_ib_xmit_rdma(struct rds_connection *co 394 int rds_ib_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op);
430 void rds_ib_send_add_credits(struct rds_connec 395 void rds_ib_send_add_credits(struct rds_connection *conn, unsigned int credits);
431 void rds_ib_advertise_credits(struct rds_conne 396 void rds_ib_advertise_credits(struct rds_connection *conn, unsigned int posted);
432 int rds_ib_send_grab_credits(struct rds_ib_con 397 int rds_ib_send_grab_credits(struct rds_ib_connection *ic, u32 wanted,
433 u32 *adv_credits, 398 u32 *adv_credits, int need_posted, int max_posted);
434 int rds_ib_xmit_atomic(struct rds_connection * 399 int rds_ib_xmit_atomic(struct rds_connection *conn, struct rm_atomic_op *op);
435 400
436 /* ib_stats.c */ 401 /* ib_stats.c */
437 DECLARE_PER_CPU_SHARED_ALIGNED(struct rds_ib_s !! 402 DECLARE_PER_CPU(struct rds_ib_statistics, rds_ib_stats);
438 #define rds_ib_stats_inc(member) rds_stats_inc 403 #define rds_ib_stats_inc(member) rds_stats_inc_which(rds_ib_stats, member)
439 #define rds_ib_stats_add(member, count) \ <<
440 rds_stats_add_which(rds_ib_sta <<
441 unsigned int rds_ib_stats_info_copy(struct rds 404 unsigned int rds_ib_stats_info_copy(struct rds_info_iterator *iter,
442 unsigned i 405 unsigned int avail);
443 406
444 /* ib_sysctl.c */ 407 /* ib_sysctl.c */
445 int rds_ib_sysctl_init(void); 408 int rds_ib_sysctl_init(void);
446 void rds_ib_sysctl_exit(void); 409 void rds_ib_sysctl_exit(void);
447 extern unsigned long rds_ib_sysctl_max_send_wr 410 extern unsigned long rds_ib_sysctl_max_send_wr;
448 extern unsigned long rds_ib_sysctl_max_recv_wr 411 extern unsigned long rds_ib_sysctl_max_recv_wr;
449 extern unsigned long rds_ib_sysctl_max_unsig_w 412 extern unsigned long rds_ib_sysctl_max_unsig_wrs;
450 extern unsigned long rds_ib_sysctl_max_unsig_b 413 extern unsigned long rds_ib_sysctl_max_unsig_bytes;
451 extern unsigned long rds_ib_sysctl_max_recv_al 414 extern unsigned long rds_ib_sysctl_max_recv_allocation;
452 extern unsigned int rds_ib_sysctl_flow_control 415 extern unsigned int rds_ib_sysctl_flow_control;
453 416
454 #endif 417 #endif
455 418
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