diff options
Diffstat (limited to 'drivers/s390/net/qeth_core_main.c')
-rw-r--r-- | drivers/s390/net/qeth_core_main.c | 81 |
1 files changed, 67 insertions, 14 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index e2fbfff..642c77c 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -1784,6 +1784,8 @@ static int qeth_idx_activate_get_answer(struct qeth_channel *channel, QETH_DBF_TEXT(SETUP, 2, "idxanswr"); card = CARD_FROM_CDEV(channel->ccwdev); iob = qeth_get_buffer(channel); + if (!iob) + return -ENOMEM; iob->callback = idx_reply_cb; memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); channel->ccw.count = QETH_BUFSIZE; @@ -1834,6 +1836,8 @@ static int qeth_idx_activate_channel(struct qeth_channel *channel, QETH_DBF_TEXT(SETUP, 2, "idxactch"); iob = qeth_get_buffer(channel); + if (!iob) + return -ENOMEM; iob->callback = idx_reply_cb; memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); channel->ccw.count = IDX_ACTIVATE_SIZE; @@ -2940,9 +2944,16 @@ struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, struct qeth_cmd_buffer *iob; struct qeth_ipa_cmd *cmd; - iob = qeth_wait_for_buffer(&card->write); - cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); - qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); + iob = qeth_get_buffer(&card->write); + if (iob) { + cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); + qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); + } else { + dev_warn(&card->gdev->dev, + "The qeth driver ran out of channel command buffers\n"); + QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", + dev_name(&card->gdev->dev)); + } return iob; } @@ -3000,6 +3011,8 @@ int qeth_send_startlan(struct qeth_card *card) QETH_DBF_TEXT(SETUP, 2, "strtlan"); iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); + if (!iob) + return -ENOMEM; rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); return rc; } @@ -3045,11 +3058,13 @@ static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4); - cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); - cmd->data.setadapterparms.hdr.cmdlength = cmdlen; - cmd->data.setadapterparms.hdr.command_code = command; - cmd->data.setadapterparms.hdr.used_total = 1; - cmd->data.setadapterparms.hdr.seq_no = 1; + if (iob) { + cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); + cmd->data.setadapterparms.hdr.cmdlength = cmdlen; + cmd->data.setadapterparms.hdr.command_code = command; + cmd->data.setadapterparms.hdr.used_total = 1; + cmd->data.setadapterparms.hdr.seq_no = 1; + } return iob; } @@ -3062,6 +3077,8 @@ int qeth_query_setadapterparms(struct qeth_card *card) QETH_CARD_TEXT(card, 3, "queryadp"); iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, sizeof(struct qeth_ipacmd_setadpparms)); + if (!iob) + return -ENOMEM; rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); return rc; } @@ -3112,6 +3129,8 @@ int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); + if (!iob) + return -ENOMEM; rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); return rc; } @@ -3151,6 +3170,8 @@ int qeth_query_switch_attributes(struct qeth_card *card, return -ENOMEDIUM; iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, sizeof(struct qeth_ipacmd_setadpparms_hdr)); + if (!iob) + return -ENOMEM; return qeth_send_ipa_cmd(card, iob, qeth_query_switch_attributes_cb, sw_info); } @@ -3178,6 +3199,8 @@ static int qeth_query_setdiagass(struct qeth_card *card) QETH_DBF_TEXT(SETUP, 2, "qdiagass"); iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); + if (!iob) + return -ENOMEM; cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); cmd->data.diagass.subcmd_len = 16; cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; @@ -3229,6 +3252,8 @@ int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) QETH_DBF_TEXT(SETUP, 2, "diagtrap"); iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); + if (!iob) + return -ENOMEM; cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); cmd->data.diagass.subcmd_len = 80; cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; @@ -4194,6 +4219,8 @@ void qeth_setadp_promisc_mode(struct qeth_card *card) iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, sizeof(struct qeth_ipacmd_setadpparms)); + if (!iob) + return; cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); cmd->data.setadapterparms.data.mode = mode; qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); @@ -4264,6 +4291,8 @@ int qeth_setadpparms_change_macaddr(struct qeth_card *card) iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, sizeof(struct qeth_ipacmd_setadpparms)); + if (!iob) + return -ENOMEM; cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN; @@ -4377,6 +4406,8 @@ static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, sizeof(struct qeth_ipacmd_setadpparms_hdr) + sizeof(struct qeth_set_access_ctrl)); + if (!iob) + return -ENOMEM; cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; access_ctrl_req->subcmd_code = isolation; @@ -4620,6 +4651,10 @@ int qeth_snmp_command(struct qeth_card *card, char __user *udata) iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, QETH_SNMP_SETADP_CMDLENGTH + req_len); + if (!iob) { + rc = -ENOMEM; + goto out; + } cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, @@ -4631,7 +4666,7 @@ int qeth_snmp_command(struct qeth_card *card, char __user *udata) if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) rc = -EFAULT; } - +out: kfree(ureq); kfree(qinfo.udata); return rc; @@ -4702,6 +4737,10 @@ int qeth_query_oat_command(struct qeth_card *card, char __user *udata) iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, sizeof(struct qeth_ipacmd_setadpparms_hdr) + sizeof(struct qeth_query_oat)); + if (!iob) { + rc = -ENOMEM; + goto out_free; + } cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); oat_req = &cmd->data.setadapterparms.data.query_oat; oat_req->subcmd_code = oat_data.command; @@ -4767,6 +4806,8 @@ static int qeth_query_card_info(struct qeth_card *card, return -EOPNOTSUPP; iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, sizeof(struct qeth_ipacmd_setadpparms_hdr)); + if (!iob) + return -ENOMEM; return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, (void *)carrier_info); } @@ -5092,11 +5133,23 @@ retriable: card->options.adp.supported_funcs = 0; card->options.sbp.supported_funcs = 0; card->info.diagass_support = 0; - qeth_query_ipassists(card, QETH_PROT_IPV4); - if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) - qeth_query_setadapterparms(card); - if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) - qeth_query_setdiagass(card); + rc = qeth_query_ipassists(card, QETH_PROT_IPV4); + if (rc == -ENOMEM) + goto out; + if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { + rc = qeth_query_setadapterparms(card); + if (rc < 0) { + QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); + goto out; + } + } + if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { + rc = qeth_query_setdiagass(card); + if (rc < 0) { + QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); + goto out; + } + } return 0; out: dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " |