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48 #include <rdma/ib_mad.h>
52 * rvt_process_mad - process an incoming MAD packet
53 * @ibdev: the infiniband device this packet came in on
54 * @mad_flags: MAD flags
55 * @port: the port number this packet came in on
56 * @in_wc: the work completion entry for this packet
57 * @in_grh: the global route header for this packet
58 * @in_mad: the incoming MAD
59 * @out_mad: any outgoing MAD reply
61 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
62 * interested in processing.
64 * Note that the verbs framework has already done the MAD sanity checks,
65 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
68 * This is called by the ib_mad module.
70 int rvt_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
71 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
72 const struct ib_mad_hdr *in, size_t in_mad_size,
73 struct ib_mad_hdr *out, size_t *out_mad_size,
74 u16 *out_mad_pkey_index)
77 * Drivers will need to provide a number of things. For exmaple counters
78 * will need to be maintained by the driver but shoud live in the rvt
79 * structure. More study will be needed to finalize the interface
80 * between drivers and rvt for mad packets.
85 return IB_MAD_RESULT_FAILURE;
88 static void rvt_send_mad_handler(struct ib_mad_agent *agent,
89 struct ib_mad_send_wc *mad_send_wc)
91 ib_free_send_mad(mad_send_wc->send_buf);
94 int rvt_create_mad_agents(struct rvt_dev_info *rdi)
96 struct ib_mad_agent *agent;
97 struct rvt_ibport *rvp;
101 for (p = 0; p < rdi->dparms.nports; p++) {
103 agent = ib_register_mad_agent(&rdi->ibdev, p + 1,
105 NULL, 0, rvt_send_mad_handler,
108 ret = PTR_ERR(agent);
112 rvp->send_agent = agent;
114 if (rdi->driver_f.notify_create_mad_agent)
115 rdi->driver_f.notify_create_mad_agent(rdi, p);
121 for (p = 0; p < rdi->dparms.nports; p++) {
123 if (rvp->send_agent) {
124 agent = rvp->send_agent;
125 rvp->send_agent = NULL;
126 ib_unregister_mad_agent(agent);
127 if (rdi->driver_f.notify_free_mad_agent)
128 rdi->driver_f.notify_free_mad_agent(rdi, p);
135 void rvt_free_mad_agents(struct rvt_dev_info *rdi)
137 struct ib_mad_agent *agent;
138 struct rvt_ibport *rvp;
141 for (p = 0; p < rdi->dparms.nports; p++) {
143 if (rvp->send_agent) {
144 agent = rvp->send_agent;
145 rvp->send_agent = NULL;
146 ib_unregister_mad_agent(agent);
149 ib_destroy_ah(&rvp->sm_ah->ibah);
153 if (rdi->driver_f.notify_free_mad_agent)
154 rdi->driver_f.notify_free_mad_agent(rdi, p);