From 1282ab76d983b2753b5cd4c9ae6b8019b0557b30 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Wed, 18 Apr 2012 03:06:00 -0500 Subject: [PATCH] [SCSI] be2iscsi: Freeing of WRB and SGL Handle in cleanup task The WRB and SGL Handle allocated for Login task were not freed back to the pool after the login process was done. This code releases the WRB and SGL Handle after the login process. v2: - Fix up locking so bh calls are not done when not needed. - Make beiscsi_cleanup_task static. Signed-off-by: Jayamohan Kallickal [various fixes] Signed-off-by: Mike Christie Signed-off-by: James Bottomley --- drivers/scsi/be2iscsi/be_main.c | 107 ++++++++++++++++++-------------- 1 file changed, 62 insertions(+), 45 deletions(-) diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index 23344c8c5b79..185cf394b9f0 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -1252,9 +1252,9 @@ hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn, task = pwrb_handle->pio_handle; io_task = task->dd_data; - spin_lock(&phba->mgmt_sgl_lock); + spin_lock_bh(&phba->mgmt_sgl_lock); free_mgmt_sgl_handle(phba, io_task->psgl_handle); - spin_unlock(&phba->mgmt_sgl_lock); + spin_unlock_bh(&phba->mgmt_sgl_lock); spin_lock_bh(&session->lock); free_wrb_handle(phba, pwrb_context, pwrb_handle); spin_unlock_bh(&session->lock); @@ -3693,6 +3693,57 @@ static void beiscsi_clean_port(struct beiscsi_hba *phba) kfree(phba->ep_array); } +static void beiscsi_cleanup_task(struct iscsi_task *task) +{ + struct beiscsi_io_task *io_task = task->dd_data; + struct iscsi_conn *conn = task->conn; + struct beiscsi_conn *beiscsi_conn = conn->dd_data; + struct beiscsi_hba *phba = beiscsi_conn->phba; + struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess; + struct hwi_wrb_context *pwrb_context; + struct hwi_controller *phwi_ctrlr; + + phwi_ctrlr = phba->phwi_ctrlr; + pwrb_context = &phwi_ctrlr->wrb_context[beiscsi_conn->beiscsi_conn_cid + - phba->fw_config.iscsi_cid_start]; + + if (io_task->cmd_bhs) { + pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs, + io_task->bhs_pa.u.a64.address); + io_task->cmd_bhs = NULL; + } + + if (task->sc) { + if (io_task->pwrb_handle) { + free_wrb_handle(phba, pwrb_context, + io_task->pwrb_handle); + io_task->pwrb_handle = NULL; + } + + if (io_task->psgl_handle) { + spin_lock(&phba->io_sgl_lock); + free_io_sgl_handle(phba, io_task->psgl_handle); + spin_unlock(&phba->io_sgl_lock); + io_task->psgl_handle = NULL; + } + } else { + if (!beiscsi_conn->login_in_progress) { + if (io_task->pwrb_handle) { + free_wrb_handle(phba, pwrb_context, + io_task->pwrb_handle); + io_task->pwrb_handle = NULL; + } + if (io_task->psgl_handle) { + spin_lock(&phba->mgmt_sgl_lock); + free_mgmt_sgl_handle(phba, + io_task->psgl_handle); + spin_unlock(&phba->mgmt_sgl_lock); + io_task->psgl_handle = NULL; + } + } + } +} + void beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn, struct beiscsi_offload_params *params) @@ -3701,12 +3752,19 @@ beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn, struct iscsi_target_context_update_wrb *pwrb = NULL; struct be_mem_descriptor *mem_descr; struct beiscsi_hba *phba = beiscsi_conn->phba; + struct iscsi_task *task = beiscsi_conn->task; + struct iscsi_session *session = task->conn->session; u32 doorbell = 0; /* * We can always use 0 here because it is reserved by libiscsi for * login/startup related tasks. */ + beiscsi_conn->login_in_progress = 0; + spin_lock_bh(&session->lock); + beiscsi_cleanup_task(task); + spin_unlock_bh(&session->lock); + pwrb_handle = alloc_wrb_handle(phba, (beiscsi_conn->beiscsi_conn_cid - phba->fw_config.iscsi_cid_start)); pwrb = (struct iscsi_target_context_update_wrb *)pwrb_handle->pwrb; @@ -3862,6 +3920,7 @@ static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode) io_task->pwrb_handle = beiscsi_conn->plogin_wrb_handle; } + beiscsi_conn->task = task; } else { spin_lock(&phba->mgmt_sgl_lock); io_task->psgl_handle = alloc_mgmt_sgl_handle(phba); @@ -3904,53 +3963,11 @@ free_hndls: io_task->pwrb_handle = NULL; pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs, io_task->bhs_pa.u.a64.address); + io_task->cmd_bhs = NULL; SE_DEBUG(DBG_LVL_1, "Alloc of SGL_ICD Failed\n"); return -ENOMEM; } -static void beiscsi_cleanup_task(struct iscsi_task *task) -{ - struct beiscsi_io_task *io_task = task->dd_data; - struct iscsi_conn *conn = task->conn; - struct beiscsi_conn *beiscsi_conn = conn->dd_data; - struct beiscsi_hba *phba = beiscsi_conn->phba; - struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess; - struct hwi_wrb_context *pwrb_context; - struct hwi_controller *phwi_ctrlr; - - phwi_ctrlr = phba->phwi_ctrlr; - pwrb_context = &phwi_ctrlr->wrb_context[beiscsi_conn->beiscsi_conn_cid - - phba->fw_config.iscsi_cid_start]; - if (io_task->pwrb_handle) { - free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle); - io_task->pwrb_handle = NULL; - } - - if (io_task->cmd_bhs) { - pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs, - io_task->bhs_pa.u.a64.address); - } - - if (task->sc) { - if (io_task->psgl_handle) { - spin_lock(&phba->io_sgl_lock); - free_io_sgl_handle(phba, io_task->psgl_handle); - spin_unlock(&phba->io_sgl_lock); - io_task->psgl_handle = NULL; - } - } else { - if (task->hdr && - ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN)) - return; - if (io_task->psgl_handle) { - spin_lock(&phba->mgmt_sgl_lock); - free_mgmt_sgl_handle(phba, io_task->psgl_handle); - spin_unlock(&phba->mgmt_sgl_lock); - io_task->psgl_handle = NULL; - } - } -} - static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg, unsigned int num_sg, unsigned int xferlen, unsigned int writedir) -- 2.20.1