diff options
Diffstat (limited to 'drivers/char/ipmi/ipmi_msghandler.c')
-rw-r--r-- | drivers/char/ipmi/ipmi_msghandler.c | 121 |
1 files changed, 62 insertions, 59 deletions
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index 6707659cffd6..2aab80e19ae0 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -904,12 +904,14 @@ static int deliver_response(struct ipmi_smi *intf, struct ipmi_recv_msg *msg) rv = -EINVAL; } ipmi_free_recv_msg(msg); - } else if (!oops_in_progress) { + } else if (oops_in_progress) { /* * If we are running in the panic context, calling the * receive handler doesn't much meaning and has a deadlock * risk. At this moment, simply skip it in that case. */ + ipmi_free_recv_msg(msg); + } else { int index; struct ipmi_user *user = acquire_ipmi_user(msg->user, &index); @@ -2220,7 +2222,8 @@ static int i_ipmi_request(struct ipmi_user *user, else { smi_msg = ipmi_alloc_smi_msg(); if (smi_msg == NULL) { - ipmi_free_recv_msg(recv_msg); + if (!supplied_recv) + ipmi_free_recv_msg(recv_msg); rv = -ENOMEM; goto out; } @@ -4215,7 +4218,53 @@ static int handle_one_recv_msg(struct ipmi_smi *intf, int chan; ipmi_debug_msg("Recv:", msg->rsp, msg->rsp_size); - if (msg->rsp_size < 2) { + + if ((msg->data_size >= 2) + && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) + && (msg->data[1] == IPMI_SEND_MSG_CMD) + && (msg->user_data == NULL)) { + + if (intf->in_shutdown) + goto free_msg; + + /* + * This is the local response to a command send, start + * the timer for these. The user_data will not be + * NULL if this is a response send, and we will let + * response sends just go through. + */ + + /* + * Check for errors, if we get certain errors (ones + * that mean basically we can try again later), we + * ignore them and start the timer. Otherwise we + * report the error immediately. + */ + if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) + && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) + && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR) + && (msg->rsp[2] != IPMI_BUS_ERR) + && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) { + int ch = msg->rsp[3] & 0xf; + struct ipmi_channel *chans; + + /* Got an error sending the message, handle it. */ + + chans = READ_ONCE(intf->channel_list)->c; + if ((chans[ch].medium == IPMI_CHANNEL_MEDIUM_8023LAN) + || (chans[ch].medium == IPMI_CHANNEL_MEDIUM_ASYNC)) + ipmi_inc_stat(intf, sent_lan_command_errs); + else + ipmi_inc_stat(intf, sent_ipmb_command_errs); + intf_err_seq(intf, msg->msgid, msg->rsp[2]); + } else + /* The message was sent, start the timer. */ + intf_start_seq_timer(intf, msg->msgid); +free_msg: + requeue = 0; + goto out; + + } else if (msg->rsp_size < 2) { /* Message is too small to be correct. */ dev_warn(intf->si_dev, "BMC returned too small a message for netfn %x cmd %x, got %d bytes\n", @@ -4472,62 +4521,16 @@ void ipmi_smi_msg_received(struct ipmi_smi *intf, unsigned long flags = 0; /* keep us warning-free. */ int run_to_completion = intf->run_to_completion; - if ((msg->data_size >= 2) - && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) - && (msg->data[1] == IPMI_SEND_MSG_CMD) - && (msg->user_data == NULL)) { - - if (intf->in_shutdown) - goto free_msg; - - /* - * This is the local response to a command send, start - * the timer for these. The user_data will not be - * NULL if this is a response send, and we will let - * response sends just go through. - */ - - /* - * Check for errors, if we get certain errors (ones - * that mean basically we can try again later), we - * ignore them and start the timer. Otherwise we - * report the error immediately. - */ - if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) - && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) - && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR) - && (msg->rsp[2] != IPMI_BUS_ERR) - && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) { - int ch = msg->rsp[3] & 0xf; - struct ipmi_channel *chans; - - /* Got an error sending the message, handle it. */ - - chans = READ_ONCE(intf->channel_list)->c; - if ((chans[ch].medium == IPMI_CHANNEL_MEDIUM_8023LAN) - || (chans[ch].medium == IPMI_CHANNEL_MEDIUM_ASYNC)) - ipmi_inc_stat(intf, sent_lan_command_errs); - else - ipmi_inc_stat(intf, sent_ipmb_command_errs); - intf_err_seq(intf, msg->msgid, msg->rsp[2]); - } else - /* The message was sent, start the timer. */ - intf_start_seq_timer(intf, msg->msgid); - -free_msg: - ipmi_free_smi_msg(msg); - } else { - /* - * To preserve message order, we keep a queue and deliver from - * a tasklet. - */ - if (!run_to_completion) - spin_lock_irqsave(&intf->waiting_rcv_msgs_lock, flags); - list_add_tail(&msg->link, &intf->waiting_rcv_msgs); - if (!run_to_completion) - spin_unlock_irqrestore(&intf->waiting_rcv_msgs_lock, - flags); - } + /* + * To preserve message order, we keep a queue and deliver from + * a tasklet. + */ + if (!run_to_completion) + spin_lock_irqsave(&intf->waiting_rcv_msgs_lock, flags); + list_add_tail(&msg->link, &intf->waiting_rcv_msgs); + if (!run_to_completion) + spin_unlock_irqrestore(&intf->waiting_rcv_msgs_lock, + flags); if (!run_to_completion) spin_lock_irqsave(&intf->xmit_msgs_lock, flags); |