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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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IB/sa: Make sure SA queries use default P_Key
MADs sent to the SA should use the the default P_Key (0x7fff/0xffff). There's no requirement that the default P_Key is stored at index 0 in the local P_Key table, so add code to the sa_query module to look up the index of the default P_Key when creating an address handle for the SA (which is done any time the P_Key table might change), and use this index for all SA queries. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Sean Hefty
Roland Dreier
parent
1b844afe9e
commit
2aec5c602c
@ -56,6 +56,7 @@ MODULE_LICENSE("Dual BSD/GPL");
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struct ib_sa_sm_ah {
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struct ib_ah *ah;
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struct kref ref;
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u16 pkey_index;
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u8 src_path_mask;
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};
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@ -382,6 +383,13 @@ static void update_sm_ah(struct work_struct *work)
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kref_init(&new_ah->ref);
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new_ah->src_path_mask = (1 << port_attr.lmc) - 1;
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new_ah->pkey_index = 0;
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if (ib_find_pkey(port->agent->device, port->port_num,
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IB_DEFAULT_PKEY_FULL, &new_ah->pkey_index) &&
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ib_find_pkey(port->agent->device, port->port_num,
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IB_DEFAULT_PKEY_PARTIAL, &new_ah->pkey_index))
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printk(KERN_ERR "Couldn't find index for default PKey\n");
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memset(&ah_attr, 0, sizeof ah_attr);
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ah_attr.dlid = port_attr.sm_lid;
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ah_attr.sl = port_attr.sm_sl;
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@ -512,6 +520,35 @@ int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
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}
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EXPORT_SYMBOL(ib_init_ah_from_path);
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static int alloc_mad(struct ib_sa_query *query, gfp_t gfp_mask)
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{
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unsigned long flags;
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spin_lock_irqsave(&query->port->ah_lock, flags);
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kref_get(&query->port->sm_ah->ref);
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query->sm_ah = query->port->sm_ah;
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spin_unlock_irqrestore(&query->port->ah_lock, flags);
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query->mad_buf = ib_create_send_mad(query->port->agent, 1,
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query->sm_ah->pkey_index,
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0, IB_MGMT_SA_HDR, IB_MGMT_SA_DATA,
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gfp_mask);
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if (!query->mad_buf) {
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kref_put(&query->sm_ah->ref, free_sm_ah);
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return -ENOMEM;
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}
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query->mad_buf->ah = query->sm_ah->ah;
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return 0;
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}
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static void free_mad(struct ib_sa_query *query)
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{
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ib_free_send_mad(query->mad_buf);
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kref_put(&query->sm_ah->ref, free_sm_ah);
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}
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static void init_mad(struct ib_sa_mad *mad, struct ib_mad_agent *agent)
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{
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unsigned long flags;
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@ -548,20 +585,11 @@ static int send_mad(struct ib_sa_query *query, int timeout_ms, gfp_t gfp_mask)
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query->mad_buf->context[0] = query;
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query->id = id;
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spin_lock_irqsave(&query->port->ah_lock, flags);
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kref_get(&query->port->sm_ah->ref);
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query->sm_ah = query->port->sm_ah;
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spin_unlock_irqrestore(&query->port->ah_lock, flags);
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query->mad_buf->ah = query->sm_ah->ah;
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ret = ib_post_send_mad(query->mad_buf, NULL);
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if (ret) {
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spin_lock_irqsave(&idr_lock, flags);
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idr_remove(&query_idr, id);
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spin_unlock_irqrestore(&idr_lock, flags);
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kref_put(&query->sm_ah->ref, free_sm_ah);
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}
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/*
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@ -647,13 +675,10 @@ int ib_sa_path_rec_get(struct ib_sa_client *client,
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if (!query)
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return -ENOMEM;
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query->sa_query.mad_buf = ib_create_send_mad(agent, 1, 0,
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0, IB_MGMT_SA_HDR,
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IB_MGMT_SA_DATA, gfp_mask);
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if (!query->sa_query.mad_buf) {
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ret = -ENOMEM;
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query->sa_query.port = port;
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ret = alloc_mad(&query->sa_query, gfp_mask);
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if (ret)
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goto err1;
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}
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ib_sa_client_get(client);
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query->sa_query.client = client;
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@ -665,7 +690,6 @@ int ib_sa_path_rec_get(struct ib_sa_client *client,
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query->sa_query.callback = callback ? ib_sa_path_rec_callback : NULL;
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query->sa_query.release = ib_sa_path_rec_release;
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query->sa_query.port = port;
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mad->mad_hdr.method = IB_MGMT_METHOD_GET;
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mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_PATH_REC);
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mad->sa_hdr.comp_mask = comp_mask;
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@ -683,7 +707,7 @@ int ib_sa_path_rec_get(struct ib_sa_client *client,
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err2:
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*sa_query = NULL;
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ib_sa_client_put(query->sa_query.client);
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ib_free_send_mad(query->sa_query.mad_buf);
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free_mad(&query->sa_query);
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err1:
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kfree(query);
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@ -773,13 +797,10 @@ int ib_sa_service_rec_query(struct ib_sa_client *client,
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if (!query)
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return -ENOMEM;
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query->sa_query.mad_buf = ib_create_send_mad(agent, 1, 0,
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0, IB_MGMT_SA_HDR,
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IB_MGMT_SA_DATA, gfp_mask);
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if (!query->sa_query.mad_buf) {
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ret = -ENOMEM;
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query->sa_query.port = port;
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ret = alloc_mad(&query->sa_query, gfp_mask);
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if (ret)
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goto err1;
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}
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ib_sa_client_get(client);
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query->sa_query.client = client;
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@ -791,7 +812,6 @@ int ib_sa_service_rec_query(struct ib_sa_client *client,
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query->sa_query.callback = callback ? ib_sa_service_rec_callback : NULL;
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query->sa_query.release = ib_sa_service_rec_release;
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query->sa_query.port = port;
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mad->mad_hdr.method = method;
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mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_SERVICE_REC);
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mad->sa_hdr.comp_mask = comp_mask;
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@ -810,7 +830,7 @@ int ib_sa_service_rec_query(struct ib_sa_client *client,
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err2:
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*sa_query = NULL;
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ib_sa_client_put(query->sa_query.client);
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ib_free_send_mad(query->sa_query.mad_buf);
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free_mad(&query->sa_query);
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err1:
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kfree(query);
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@ -869,13 +889,10 @@ int ib_sa_mcmember_rec_query(struct ib_sa_client *client,
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if (!query)
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return -ENOMEM;
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query->sa_query.mad_buf = ib_create_send_mad(agent, 1, 0,
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0, IB_MGMT_SA_HDR,
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IB_MGMT_SA_DATA, gfp_mask);
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if (!query->sa_query.mad_buf) {
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ret = -ENOMEM;
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query->sa_query.port = port;
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ret = alloc_mad(&query->sa_query, gfp_mask);
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if (ret)
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goto err1;
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}
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ib_sa_client_get(client);
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query->sa_query.client = client;
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@ -887,7 +904,6 @@ int ib_sa_mcmember_rec_query(struct ib_sa_client *client,
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query->sa_query.callback = callback ? ib_sa_mcmember_rec_callback : NULL;
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query->sa_query.release = ib_sa_mcmember_rec_release;
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query->sa_query.port = port;
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mad->mad_hdr.method = method;
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mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_MC_MEMBER_REC);
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mad->sa_hdr.comp_mask = comp_mask;
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@ -906,7 +922,7 @@ int ib_sa_mcmember_rec_query(struct ib_sa_client *client,
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err2:
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*sa_query = NULL;
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ib_sa_client_put(query->sa_query.client);
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ib_free_send_mad(query->sa_query.mad_buf);
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free_mad(&query->sa_query);
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err1:
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kfree(query);
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@ -939,8 +955,7 @@ static void send_handler(struct ib_mad_agent *agent,
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idr_remove(&query_idr, query->id);
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spin_unlock_irqrestore(&idr_lock, flags);
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ib_free_send_mad(mad_send_wc->send_buf);
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kref_put(&query->sm_ah->ref, free_sm_ah);
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free_mad(query);
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ib_sa_client_put(query->client);
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query->release(query);
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}
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@ -111,6 +111,9 @@
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#define IB_QP1_QKEY 0x80010000
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#define IB_QP_SET_QKEY 0x80000000
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#define IB_DEFAULT_PKEY_PARTIAL 0x7FFF
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#define IB_DEFAULT_PKEY_FULL 0xFFFF
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enum {
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IB_MGMT_MAD_HDR = 24,
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IB_MGMT_MAD_DATA = 232,
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