| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Tue, 6 Oct 2015 14:09:44 +1100
From: Gavin Shan <gwshan@...ux.vnet.ibm.com>
To: netdev@...r.kernel.org
Cc: benh@...nel.crashing.org, davem@...emloft.net,
Gavin Shan <gwshan@...ux.vnet.ibm.com>
Subject: [PATCH RFC v1 2/7] net/ncsi: Packet handler
NCSI packet encapsulated in ethernet frame is recognized by the
ethernet protocol field (0x88F8). According to NCSI spec, the
destination MAC field should be 0xFF's, but the source MAC field
could be arbitrary one since channel field in NCSI header indicates
the source of the packet.
There are 3 types of packets depending on the type field in the NCSI
packet header: command, response, Asynchronous Event Notification
(AEN). The command packets are sent from NCSI enabled interace to
the NCSI package or channel for purpose of information retrival or
configuration. The response packets, as responses to the received
command packets, originate from NCSI package or channel and terminate
at NCSI enabled interface. AEN packets are sent from NCSI channel
for asynchronous events that might indicate failure detected on
the active channel.
This implements the functions to handle NCSI packets.
Signed-off-by: Gavin Shan <gwshan@...ux.vnet.ibm.com>
---
include/uapi/linux/if_ether.h | 1 +
net/ncsi/Makefile | 3 +-
net/ncsi/internal.h | 6 +
net/ncsi/ncsi-aen.c | 194 +++++++
net/ncsi/ncsi-cmd.c | 380 ++++++++++++++
net/ncsi/ncsi-pkt.h | 391 ++++++++++++++
net/ncsi/ncsi-rsp.c | 1167 +++++++++++++++++++++++++++++++++++++++++
7 files changed, 2141 insertions(+), 1 deletion(-)
create mode 100644 net/ncsi/ncsi-aen.c
create mode 100644 net/ncsi/ncsi-cmd.c
create mode 100644 net/ncsi/ncsi-pkt.h
create mode 100644 net/ncsi/ncsi-rsp.c
diff --git a/include/uapi/linux/if_ether.h b/include/uapi/linux/if_ether.h
index aa63ed0..db85863 100644
--- a/include/uapi/linux/if_ether.h
+++ b/include/uapi/linux/if_ether.h
@@ -85,6 +85,7 @@
#define ETH_P_8021AH 0x88E7 /* 802.1ah Backbone Service Tag */
#define ETH_P_MVRP 0x88F5 /* 802.1Q MVRP */
#define ETH_P_1588 0x88F7 /* IEEE 1588 Timesync */
+#define ETH_P_NCSI 0x88F8 /* NCSI protocol */
#define ETH_P_PRP 0x88FB /* IEC 62439-3 PRP/HSRv0 */
#define ETH_P_FCOE 0x8906 /* Fibre Channel over Ethernet */
#define ETH_P_TDLS 0x890D /* TDLS */
diff --git a/net/ncsi/Makefile b/net/ncsi/Makefile
index 07b5625..e4094c2 100644
--- a/net/ncsi/Makefile
+++ b/net/ncsi/Makefile
@@ -1,4 +1,5 @@
#
# Makefile for NCSI API
#
-obj-$(CONFIG_NET_NCSI) += ncsi-manage.o
+obj-$(CONFIG_NET_NCSI) += ncsi-cmd.o ncsi-rsp.o ncsi-aen.o \
+ ncsi-manage.o
diff --git a/net/ncsi/internal.h b/net/ncsi/internal.h
index c9511bb..9262717 100644
--- a/net/ncsi/internal.h
+++ b/net/ncsi/internal.h
@@ -150,4 +150,10 @@ struct ncsi_req *ncsi_alloc_req(struct ncsi_dev_priv *ndp);
void ncsi_free_req(struct ncsi_req *nr, bool check, bool timeout);
struct ncsi_dev *ncsi_find_dev(struct net_device *dev);
+/* Packet handlers */
+int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca);
+int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt, struct net_device *orig_dev);
+int ncsi_aen_handler(struct ncsi_dev_priv *ndp, struct sk_buff *skb);
+
#endif /* __NCSI_INTERNAL_H__ */
diff --git a/net/ncsi/ncsi-aen.c b/net/ncsi/ncsi-aen.c
new file mode 100644
index 0000000..f5f4d2f
--- /dev/null
+++ b/net/ncsi/ncsi-aen.c
@@ -0,0 +1,194 @@
+/*
+ * Copyright Gavin Shan, IBM Corporation 2015.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+
+#include <net/ncsi.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+
+#include "internal.h"
+#include "ncsi-pkt.h"
+
+static int ncsi_validate_aen_pkt(struct ncsi_aen_pkt_hdr *h,
+ const unsigned short payload)
+{
+ unsigned char *stream;
+ __be32 *checksum, csum;
+ __be32 high, low;
+ int i;
+
+ if (h->common.revision != NCSI_PKT_REVISION)
+ return -EINVAL;
+ if (ntohs(h->common.length) != payload)
+ return -EINVAL;
+
+ /*
+ * Validate checksum, which might be zeroes if the
+ * sender doesn't support checksum according to NCSI
+ * specification.
+ */
+ checksum = (__be32 *)((void *)(h + 1) + payload - 4);
+ if (ntohl(*checksum) == 0)
+ return 0;
+
+ csum = 0;
+ stream = (unsigned char *)h;
+ for (i = 0; i < sizeof(*h) + payload - 4; i += 2) {
+ high = stream[i];
+ low = stream[i + 1];
+ csum += ((high << 8) | low);
+ }
+
+ csum = ~csum + 1;
+ if (*checksum != htonl(csum))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int ncsi_aen_handler_lsc(struct ncsi_dev_priv *ndp,
+ struct ncsi_aen_pkt_hdr *h)
+{
+ struct ncsi_aen_lsc_pkt *lsc;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_aen_pkt(h, 12);
+ if (ret)
+ return ret;
+
+ /* Find the NCSI channel */
+ ncsi_find_package_and_channel(ndp, h->common.channel, NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Update the link status */
+ ncm = &nc->nc_modes[NCSI_MODE_LINK];
+ lsc = (struct ncsi_aen_lsc_pkt *)h;
+ ncm->ncm_data[2] = ntohl(lsc->status);
+ ncm->ncm_data[4] = ntohl(lsc->oem_status);
+ if (!ndp->ndp_active_channel ||
+ ndp->ndp_active_channel != nc ||
+ ncm->ncm_data[2] & 0x1)
+ return 0;
+
+ /* If this channel is the active one and the link is down,
+ * we have to choose another channel to be active one.
+ */
+ ndp->ndp_flags |= NCSI_DEV_PRIV_FLAG_CHANGE_ACTIVE;
+ /* FIXME: Stop active channel and choose another one */
+
+ return 0;
+}
+
+static int ncsi_aen_handler_cr(struct ncsi_dev_priv *ndp,
+ struct ncsi_aen_pkt_hdr *h)
+{
+ struct ncsi_channel *nc;
+ int ret;
+
+ ret = ncsi_validate_aen_pkt(h, 4);
+ if (ret)
+ return ret;
+
+ /* Find the NCSI channel */
+ ncsi_find_package_and_channel(ndp, h->common.channel, NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* If the channel is active one, we need reconfigure it */
+ if (!ndp->ndp_active_channel ||
+ ndp->ndp_active_channel != nc)
+ return 0;
+
+ /* FIXME: Reconfigure active channel */
+
+ return 0;
+}
+
+static int ncsi_aen_handler_hncdsc(struct ncsi_dev_priv *ndp,
+ struct ncsi_aen_pkt_hdr *h)
+{
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ struct ncsi_aen_hncdsc_pkt *hncdsc;
+ int ret;
+
+ ret = ncsi_validate_aen_pkt(h, 4);
+ if (ret)
+ return ret;
+
+ /* Find the NCSI channel */
+ ncsi_find_package_and_channel(ndp, h->common.channel, NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* If the channel is active one, we need reconfigure it */
+ ncm = &nc->nc_modes[NCSI_MODE_LINK];
+ hncdsc = (struct ncsi_aen_hncdsc_pkt *)h;
+ ncm->ncm_data[3] = ntohl(hncdsc->status);
+ if (ndp->ndp_active_channel != nc ||
+ ncm->ncm_data[3] & 0x1)
+ return 0;
+
+ /* If this channel is the active one and the link doesn't
+ * work, we have to choose another channel to be active one.
+ * The logic here is exactly similar to what we do when link
+ * is down on the active channel.
+ */
+ ndp->ndp_flags |= NCSI_DEV_PRIV_FLAG_CHANGE_ACTIVE;
+ /* FIXME: Stop and choose another channel as active one */
+
+ return 0;
+}
+
+static struct ncsi_aen_handler {
+ unsigned char nah_type;
+ int (*nah_handler)(struct ncsi_dev_priv *ndp,
+ struct ncsi_aen_pkt_hdr *h);
+} ncsi_aen_handlers[] = {
+ { NCSI_PKT_AEN_LSC, ncsi_aen_handler_lsc },
+ { NCSI_PKT_AEN_CR, ncsi_aen_handler_cr },
+ { NCSI_PKT_AEN_HNCDSC, ncsi_aen_handler_hncdsc },
+ { 0, NULL }
+};
+
+int ncsi_aen_handler(struct ncsi_dev_priv *ndp, struct sk_buff *skb)
+{
+ struct ncsi_aen_pkt_hdr *h;
+ struct ncsi_aen_handler *nah;
+ int ret;
+
+ /* Find the handler */
+ h = (struct ncsi_aen_pkt_hdr *)skb_network_header(skb);
+ nah = ncsi_aen_handlers;
+ while (nah->nah_handler) {
+ if (nah->nah_type == h->type)
+ break;
+
+ nah++;
+ }
+
+ if (!nah->nah_handler) {
+ pr_warn("NCSI: Received unrecognized AEN packet (0x%x)\n",
+ h->type);
+ return -ENOENT;
+ }
+
+ ret = nah->nah_handler(ndp, h);
+ consume_skb(skb);
+
+ return ret;
+}
diff --git a/net/ncsi/ncsi-cmd.c b/net/ncsi/ncsi-cmd.c
new file mode 100644
index 0000000..d8efa25
--- /dev/null
+++ b/net/ncsi/ncsi-cmd.c
@@ -0,0 +1,380 @@
+/*
+ * Copyright Gavin Shan, IBM Corporation 2015.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+
+#include <net/ncsi.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+
+#include "internal.h"
+#include "ncsi-pkt.h"
+
+/*
+ * This function should be called after the data area has been
+ * populated completely.
+ */
+static int ncsi_cmd_build_header(struct ncsi_pkt_hdr *h,
+ struct ncsi_cmd_arg *nca)
+{
+ __be32 csum, *checksum;
+ __be32 low, high;
+ unsigned char *stream;
+ int i;
+
+ h->mc_id = 0;
+ h->revision = NCSI_PKT_REVISION;
+ h->reserved = 0;
+ h->id = nca->nca_id;
+ h->type = nca->nca_type;
+ h->channel = NCSI_TO_CHANNEL(nca->nca_package,
+ nca->nca_channel);
+ h->length = htons(nca->nca_payload);
+ h->reserved1[0] = 0;
+ h->reserved1[1] = 0;
+
+ /* Calculate the checksum */
+ csum = 0;
+ stream = (unsigned char *)h;
+ for (i = 0; i < sizeof(*h) + nca->nca_payload; i += 2) {
+ high = stream[i];
+ low = stream[i + 1];
+ csum += ((high << 8) | low);
+ }
+
+ /* Fill with the calculated checksum */
+ checksum = (__be32 *)((void *)(h + 1) + nca->nca_payload);
+ csum = (~csum + 1);
+ *checksum = htonl(csum);
+
+ return 0;
+}
+
+static int ncsi_cmd_handler_default(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_cmd_pkt *cmd;
+
+ if (!nca)
+ return 0;
+
+ cmd = (struct ncsi_cmd_pkt *)skb_put(skb, sizeof(*cmd));
+ memset(cmd, 0, sizeof(*cmd));
+ return ncsi_cmd_build_header(&cmd->cmd.common, nca);
+}
+
+static int ncsi_cmd_handler_sp(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_cmd_sp_pkt *cmd;
+
+ if (!nca)
+ return 4;
+
+ cmd = (struct ncsi_cmd_sp_pkt *)skb_put(skb, sizeof(*cmd));
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hw_arbitration = nca->nca_bytes[0];
+ return ncsi_cmd_build_header(&cmd->cmd.common, nca);
+}
+
+static int ncsi_cmd_handler_dc(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_cmd_dc_pkt *cmd;
+
+ if (!nca)
+ return 4;
+
+ cmd = (struct ncsi_cmd_dc_pkt *)skb_put(skb, sizeof(*cmd));
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->ald = nca->nca_bytes[0];
+ return ncsi_cmd_build_header(&cmd->cmd.common, nca);
+}
+
+static int ncsi_cmd_handler_rc(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_cmd_rc_pkt *cmd;
+
+ if (!nca)
+ return 4;
+
+ cmd = (struct ncsi_cmd_rc_pkt *)skb_put(skb, sizeof(*cmd));
+ memset(cmd, 0, sizeof(*cmd));
+ return ncsi_cmd_build_header(&cmd->cmd.common, nca);
+}
+
+static int ncsi_cmd_handler_ae(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_cmd_ae_pkt *cmd;
+
+ if (!nca)
+ return 8;
+
+ cmd = (struct ncsi_cmd_ae_pkt *)skb_put(skb, sizeof(*cmd));
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->mc_id = nca->nca_bytes[0];
+ cmd->mode = htonl(nca->nca_dwords[1]);
+ return ncsi_cmd_build_header(&cmd->cmd.common, nca);
+}
+
+static int ncsi_cmd_handler_sl(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_cmd_sl_pkt *cmd;
+
+ if (!nca)
+ return 8;
+
+ cmd = (struct ncsi_cmd_sl_pkt *)skb_put(skb, sizeof(*cmd));
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->mode = htonl(nca->nca_dwords[0]);
+ cmd->oem_mode = htonl(nca->nca_dwords[1]);
+ return ncsi_cmd_build_header(&cmd->cmd.common, nca);
+}
+
+static int ncsi_cmd_handler_svf(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_cmd_svf_pkt *cmd;
+
+ if (!nca)
+ return 4;
+
+ cmd = (struct ncsi_cmd_svf_pkt *)skb_put(skb, sizeof(*cmd));
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->vlan = htons(nca->nca_words[0]);
+ cmd->index = nca->nca_bytes[2];
+ cmd->enable = nca->nca_bytes[3];
+ return ncsi_cmd_build_header(&cmd->cmd.common, nca);
+}
+
+static int ncsi_cmd_handler_ev(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_cmd_ev_pkt *cmd;
+
+ if (!nca)
+ return 4;
+
+ cmd = (struct ncsi_cmd_ev_pkt *)skb_put(skb, sizeof(*cmd));
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->mode = nca->nca_bytes[0];
+ return ncsi_cmd_build_header(&cmd->cmd.common, nca);
+}
+
+static int ncsi_cmd_handler_sma(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_cmd_sma_pkt *cmd;
+ int i;
+
+ if (!nca)
+ return 8;
+
+ cmd = (struct ncsi_cmd_sma_pkt *)skb_put(skb, sizeof(*cmd));
+ memset(cmd, 0, sizeof(*cmd));
+ for (i = 0; i < 6; i++)
+ cmd->mac[i] = nca->nca_bytes[i];
+ cmd->index = nca->nca_bytes[6];
+ cmd->at_e = nca->nca_bytes[7];
+ return ncsi_cmd_build_header(&cmd->cmd.common, nca);
+}
+
+static int ncsi_cmd_handler_ebf(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_cmd_ebf_pkt *cmd;
+
+ if (!nca)
+ return 4;
+
+ cmd = (struct ncsi_cmd_ebf_pkt *)skb_put(skb, sizeof(*cmd));
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->mode = htonl(nca->nca_dwords[0]);
+ return ncsi_cmd_build_header(&cmd->cmd.common, nca);
+}
+
+static int ncsi_cmd_handler_egmf(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_cmd_egmf_pkt *cmd;
+
+ if (!nca)
+ return 4;
+
+ cmd = (struct ncsi_cmd_egmf_pkt *)skb_put(skb, sizeof(*cmd));
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->mode = htonl(nca->nca_dwords[0]);
+ return ncsi_cmd_build_header(&cmd->cmd.common, nca);
+}
+
+static int ncsi_cmd_handler_snfc(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_cmd_snfc_pkt *cmd;
+
+ if (!nca)
+ return 4;
+
+ cmd = (struct ncsi_cmd_snfc_pkt *)skb_put(skb, sizeof(*cmd));
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->mode = nca->nca_bytes[0];
+ return ncsi_cmd_build_header(&cmd->cmd.common, nca);
+}
+
+static struct ncsi_cmd_handler {
+ unsigned char nch_type;
+ int (*nch_handler)(struct sk_buff *skb,
+ struct ncsi_cmd_arg *nca);
+} ncsi_cmd_handlers[] = {
+ { NCSI_PKT_CMD_CIS, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_SP, ncsi_cmd_handler_sp },
+ { NCSI_PKT_CMD_DP, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_EC, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_DC, ncsi_cmd_handler_dc },
+ { NCSI_PKT_CMD_RC, ncsi_cmd_handler_rc },
+ { NCSI_PKT_CMD_ECNT, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_DCNT, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_AE, ncsi_cmd_handler_ae },
+ { NCSI_PKT_CMD_SL, ncsi_cmd_handler_sl },
+ { NCSI_PKT_CMD_GLS, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_SVF, ncsi_cmd_handler_svf },
+ { NCSI_PKT_CMD_EV, ncsi_cmd_handler_ev },
+ { NCSI_PKT_CMD_DV, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_SMA, ncsi_cmd_handler_sma },
+ { NCSI_PKT_CMD_EBF, ncsi_cmd_handler_ebf },
+ { NCSI_PKT_CMD_DBF, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_EGMF, ncsi_cmd_handler_egmf },
+ { NCSI_PKT_CMD_DGMF, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_SNFC, ncsi_cmd_handler_snfc },
+ { NCSI_PKT_CMD_GVI, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_GC, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_GP, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_GCPS, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_GNS, ncsi_cmd_handler_default },
+ { NCSI_PKT_CMD_GNPTS, ncsi_cmd_handler_default },
+ { 0, NULL }
+};
+
+static struct ncsi_req *ncsi_alloc_cmd_req(struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_dev_priv *ndp = nca->nca_ndp;
+ struct ncsi_dev *nd = &ndp->ndp_ndev;
+ struct net_device *dev = nd->nd_dev;
+ int hlen = LL_RESERVED_SPACE(dev);
+ int tlen = dev->needed_tailroom;
+ int len = hlen + tlen;
+ struct sk_buff *skb;
+ struct ncsi_req *nr;
+
+ nr = ncsi_alloc_req(ndp);
+ if (!nr)
+ return NULL;
+
+ /* NCSI command packet has 16-bytes header, payload,
+ * 4-bytes checksum and optional padding.
+ */
+ len += sizeof(struct ncsi_cmd_pkt_hdr);
+ len += 4;
+ if (nca->nca_payload < 26)
+ len += 26;
+ else
+ len += nca->nca_payload;
+
+ /* Allocate skb */
+ skb = alloc_skb(len, GFP_ATOMIC);
+ if (!skb) {
+ ncsi_free_req(nr, false, false);
+ return NULL;
+ }
+
+ nr->nr_cmd = skb;
+ skb_reserve(skb, hlen);
+ skb_reset_network_header(skb);
+
+ skb->dev = dev;
+ skb->protocol = htons(ETH_P_NCSI);
+
+ if (nca->nca_nlh) {
+ NCSI_CB(skb).nsp_valid = 1;
+ memcpy(&NCSI_CB(skb).nsp_nlh, nca->nca_nlh,
+ nlmsg_total_size(sizeof(struct ncsi_msg)));
+ } else {
+ NCSI_CB(skb).nsp_valid = 0;
+ }
+
+ return nr;
+}
+
+int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca)
+{
+ struct ncsi_req *nr;
+ struct ethhdr *eh;
+ struct ncsi_cmd_handler *nch;
+ int i, ret;
+
+ /* Search for the handler */
+ nch = ncsi_cmd_handlers;
+ while (nch->nch_handler) {
+ if (nch->nch_type == nca->nca_type)
+ break;
+ nch++;
+ }
+
+ if (!nch->nch_handler) {
+ pr_info("%s: Cannot send packet with type 0x%x\n",
+ __func__, nca->nca_type);
+ return -ENOENT;
+ }
+
+ /* Get packet payload length and allocate the request */
+ nca->nca_payload = nch->nch_handler(NULL, NULL);
+ nr = ncsi_alloc_cmd_req(nca);
+ if (!nr)
+ return -ENOMEM;
+
+ /* Prepare the packet */
+ nca->nca_id = nr->nr_id;
+ ret = nch->nch_handler(nr->nr_cmd, nca);
+ if (ret)
+ goto out;
+
+ /* Fill the ethernet header */
+ eh = (struct ethhdr *)skb_push(nr->nr_cmd, sizeof(*eh));
+ eh->h_proto = htons(ETH_P_NCSI);
+ for (i = 0; i < ETH_ALEN; i++) {
+ eh->h_dest[i] = 0xff;
+ eh->h_source[i] = 0xff;
+ }
+
+ /* Send NCSI packet */
+ skb_get(nr->nr_cmd);
+ ret = dev_queue_xmit_sk(NULL, nr->nr_cmd);
+ if (ret)
+ goto out;
+
+ /* Start the timer for the request that might not have
+ * corresponding response. I'm not sure 1 second delay
+ * here is enough. Anyway, NCSI is internal network, so
+ * the responsiveness should be as fast as enough.
+ */
+ nr->nr_timer_enabled = true;
+ mod_timer(&nr->nr_timer, jiffies + 1 * HZ);
+
+ return 0;
+out:
+ ncsi_free_req(nr, false, false);
+ return ret;
+}
diff --git a/net/ncsi/ncsi-pkt.h b/net/ncsi/ncsi-pkt.h
new file mode 100644
index 0000000..646f1fc
--- /dev/null
+++ b/net/ncsi/ncsi-pkt.h
@@ -0,0 +1,391 @@
+#ifndef __NCSI_PKT_H__
+#define __NCSI_PKT_H__
+
+struct ncsi_pkt_hdr {
+ unsigned char mc_id; /* Management controller ID */
+ unsigned char revision; /* NCSI version - 0x01 */
+ unsigned char reserved; /* Reserved */
+ unsigned char id; /* Packet sequence number */
+ unsigned char type; /* Packet type */
+ unsigned char channel; /* Network controller ID */
+ __be16 length; /* Payload length */
+ __be32 reserved1[2]; /* Reserved */
+};
+
+struct ncsi_cmd_pkt_hdr {
+ struct ncsi_pkt_hdr common; /* Common NCSI packet header */
+};
+
+struct ncsi_rsp_pkt_hdr {
+ struct ncsi_pkt_hdr common; /* Common NCSI packet header */
+ __be16 code; /* Response code */
+ __be16 reason; /* Response reason */
+};
+
+struct ncsi_aen_pkt_hdr {
+ struct ncsi_pkt_hdr common; /* Common NCSI packet header */
+ unsigned char reserved2[3]; /* Reserved */
+ unsigned char type; /* AEN packet type */
+};
+
+/* NCSI common command and response packets */
+struct ncsi_cmd_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[26];
+};
+
+struct ncsi_rsp_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Select Package */
+struct ncsi_cmd_sp_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char hw_arbitration; /* HW arbitration */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Disable Channel */
+struct ncsi_cmd_dc_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char ald; /* Allow link down */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Reset Channel */
+struct ncsi_cmd_rc_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 reserved; /* Reserved */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* AEN Enable */
+struct ncsi_cmd_ae_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char mc_id; /* MC ID */
+ __be32 mode; /* AEN working mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* Set Link */
+struct ncsi_cmd_sl_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 mode; /* Link working mode */
+ __be32 oem_mode; /* OEM link mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* Get Link Status */
+struct ncsi_rsp_gls_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 status; /* Link status */
+ __be32 other; /* Other indications */
+ __be32 oem_status; /* OEM link status */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[10];
+};
+
+/* Set VLAN Filter */
+struct ncsi_cmd_svf_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be16 reserved; /* Reserved */
+ __be16 vlan; /* VLAN ID */
+ __be16 reserved1; /* Reserved */
+ unsigned char index; /* VLAN table index */
+ unsigned char enable; /* Enable or disable */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[14];
+};
+
+/* Enable VLAN */
+struct ncsi_cmd_ev_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char mode; /* VLAN filter mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Set MAC Address */
+struct ncsi_cmd_sma_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char mac[6]; /* MAC address */
+ unsigned char index; /* MAC table index */
+ unsigned char at_e; /* Addr type and operation */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* Enable Broadcast Filter */
+struct ncsi_cmd_ebf_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 mode; /* Filter mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Enable Global Multicast Filter */
+struct ncsi_cmd_egmf_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 mode; /* Global MC mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Set NCSI Flow Control */
+struct ncsi_cmd_snfc_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char mode; /* Flow control mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Get Version ID */
+struct ncsi_rsp_gvi_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 ncsi_version; /* NCSI version */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char alpha2; /* NCSI version */
+ unsigned char fw_name[12]; /* f/w name string */
+ __be32 fw_version; /* f/w version */
+ __be16 pci_ids[4]; /* PCI IDs */
+ __be32 mf_id; /* Manufacture ID */
+ __be32 checksum;
+};
+
+/* Get Capabilities */
+struct ncsi_rsp_gc_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 cap; /* Capabilities */
+ __be32 bc_cap; /* Broadcast cap */
+ __be32 mc_cap; /* Multicast cap */
+ __be32 buf_cap; /* Buffering cap */
+ __be32 aen_cap; /* AEN cap */
+ unsigned char vlan_cnt; /* VLAN filter count */
+ unsigned char mixed_cnt; /* Mix filter count */
+ unsigned char mc_cnt; /* MC filter count */
+ unsigned char uc_cnt; /* UC filter count */
+ unsigned char reserved[2]; /* Reserved */
+ unsigned char vlan_mode; /* VLAN mode */
+ unsigned char channel_cnt; /* Channel count */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get Parameters */
+struct ncsi_rsp_gp_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ unsigned char mac_cnt; /* Number of MAC addr */
+ unsigned char reserved[2]; /* Reserved */
+ unsigned char mac_enable; /* MAC addr enable flags */
+ unsigned char vlan_cnt; /* VLAN tag count */
+ unsigned char reserved1; /* Reserved */
+ __be16 vlan_enable; /* VLAN tag enable flags */
+ __be32 link_mode; /* Link setting */
+ __be32 bc_mode; /* BC filter mode */
+ __be32 valid_modes; /* Valid mode parameters */
+ unsigned char vlan_mode; /* VLAN mode */
+ unsigned char fc_mode; /* Flow control mode */
+ unsigned char reserved2[2]; /* Reserved */
+ __be32 aen_mode; /* AEN mode */
+ unsigned char mac[6]; /* Supported MAC addr */
+ __be16 vlan; /* Supported VLAN tags */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get Controller Packet Statistics */
+struct ncsi_rsp_gcps_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 cnt_hi; /* Counter cleared */
+ __be32 cnt_lo; /* Counter cleared */
+ __be32 rx_bytes; /* Rx bytes */
+ __be32 tx_bytes; /* Tx bytes */
+ __be32 rx_uc_pkts; /* Rx UC packets */
+ __be32 rx_mc_pkts; /* Rx MC packets */
+ __be32 rx_bc_pkts; /* Rx BC packets */
+ __be32 tx_uc_pkts; /* Tx UC packets */
+ __be32 tx_mc_pkts; /* Tx MC packets */
+ __be32 tx_bc_pkts; /* Tx BC packets */
+ __be32 fcs_err; /* FCS errors */
+ __be32 align_err; /* Alignment errors */
+ __be32 false_carrier; /* False carrier detection */
+ __be32 runt_pkts; /* Rx runt packets */
+ __be32 jabber_pkts; /* Rx jabber packets */
+ __be32 rx_pause_xon; /* Rx pause XON frames */
+ __be32 rx_pause_xoff; /* Rx XOFF frames */
+ __be32 tx_pause_xon; /* Tx XON frames */
+ __be32 tx_pause_xoff; /* Tx XOFF frames */
+ __be32 tx_s_collision; /* Single collision frames */
+ __be32 tx_m_collision; /* Multiple collision frames */
+ __be32 l_collision; /* Late collision frames */
+ __be32 e_collision; /* Excessive collision frames */
+ __be32 rx_ctl_frames; /* Rx control frames */
+ __be32 rx_64_frames; /* Rx 64-bytes frames */
+ __be32 rx_127_frames; /* Rx 65-127 bytes frames */
+ __be32 rx_255_frames; /* Rx 128-255 bytes frames */
+ __be32 rx_511_frames; /* Rx 256-511 bytes frames */
+ __be32 rx_1023_frames; /* Rx 512-1023 bytes frames */
+ __be32 rx_1522_frames; /* Rx 1024-1522 bytes frames */
+ __be32 rx_9022_frames; /* Rx 1523-9022 bytes frames */
+ __be32 tx_64_frames; /* Tx 64-bytes frames */
+ __be32 tx_127_frames; /* Tx 65-127 bytes frames */
+ __be32 tx_255_frames; /* Tx 128-255 bytes frames */
+ __be32 tx_511_frames; /* Tx 256-511 bytes frames */
+ __be32 tx_1023_frames; /* Tx 512-1023 bytes frames */
+ __be32 tx_1522_frames; /* Tx 1024-1522 bytes frames */
+ __be32 tx_9022_frames; /* Tx 1523-9022 bytes frames */
+ __be32 rx_valid_bytes; /* Rx valid bytes */
+ __be32 rx_runt_pkts; /* Rx error runt packets */
+ __be32 rx_jabber_pkts; /* Rx error jabber packets */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get NCSI Statistics */
+struct ncsi_rsp_gns_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 rx_cmds; /* Rx NCSI commands */
+ __be32 dropped_cmds; /* Dropped commands */
+ __be32 cmd_type_errs; /* Command type errors */
+ __be32 cmd_csum_errs; /* Command checksum errors */
+ __be32 rx_pkts; /* Rx NCSI packets */
+ __be32 tx_pkts; /* Tx NCSI packets */
+ __be32 tx_aen_pkts; /* Tx AEN packets */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get NCSI Pass-through Statistics */
+struct ncsi_rsp_gnpts_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 tx_pkts; /* Tx packets */
+ __be32 tx_dropped; /* Tx dropped packets */
+ __be32 tx_channel_err; /* Tx channel errors */
+ __be32 tx_us_err; /* Tx undersize errors */
+ __be32 rx_pkts; /* Rx packets */
+ __be32 rx_dropped; /* Rx dropped packets */
+ __be32 rx_channel_err; /* Rx channel errors */
+ __be32 rx_us_err; /* Rx undersize errors */
+ __be32 rx_os_err; /* Rx oversize errors */
+ __be32 checksum; /* Checksum */
+};
+
+/* AEN: Link State Change */
+struct ncsi_aen_lsc_pkt {
+ struct ncsi_aen_pkt_hdr aen; /* AEN header */
+ __be32 status; /* Link status */
+ __be32 oem_status; /* OEM link status */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[14];
+};
+
+/* AEN: Configuration Required */
+struct ncsi_aen_cr_pkt {
+ struct ncsi_aen_pkt_hdr aen; /* AEN header */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* AEN: Host Network Controller Driver Status Change */
+struct ncsi_aen_hncdsc_pkt {
+ struct ncsi_aen_pkt_hdr aen; /* AEN header */
+ __be32 status; /* Status */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* NCSI packet revision */
+#define NCSI_PKT_REVISION 0x01
+
+/* NCSI packet commands */
+#define NCSI_PKT_CMD_CIS 0x00 /* Clear Initial State */
+#define NCSI_PKT_CMD_SP 0x01 /* Select Package */
+#define NCSI_PKT_CMD_DP 0x02 /* Deselect Package */
+#define NCSI_PKT_CMD_EC 0x03 /* Enable Channel */
+#define NCSI_PKT_CMD_DC 0x04 /* Disable Channel */
+#define NCSI_PKT_CMD_RC 0x05 /* Reset Channel */
+#define NCSI_PKT_CMD_ECNT 0x06 /* Enable Channel Network Tx */
+#define NCSI_PKT_CMD_DCNT 0x07 /* Disable Channel Network Tx */
+#define NCSI_PKT_CMD_AE 0x08 /* AEN Enable */
+#define NCSI_PKT_CMD_SL 0x09 /* Set Link */
+#define NCSI_PKT_CMD_GLS 0x0a /* Get Link */
+#define NCSI_PKT_CMD_SVF 0x0b /* Set VLAN Filter */
+#define NCSI_PKT_CMD_EV 0x0c /* Enable VLAN */
+#define NCSI_PKT_CMD_DV 0x0d /* Disable VLAN */
+#define NCSI_PKT_CMD_SMA 0x0e /* Set MAC address */
+#define NCSI_PKT_CMD_EBF 0x10 /* Enable Broadcast Filter */
+#define NCSI_PKT_CMD_DBF 0x11 /* Disable Broadcast Filter */
+#define NCSI_PKT_CMD_EGMF 0x12 /* Enable Global Multicast Filter */
+#define NCSI_PKT_CMD_DGMF 0x13 /* Disable Global Multicast Filter */
+#define NCSI_PKT_CMD_SNFC 0x14 /* Set NCSI Flow Control */
+#define NCSI_PKT_CMD_GVI 0x15 /* Get Version ID */
+#define NCSI_PKT_CMD_GC 0x16 /* Get Capabilities */
+#define NCSI_PKT_CMD_GP 0x17 /* Get Parameters */
+#define NCSI_PKT_CMD_GCPS 0x18 /* Get Controller Packet Statistics */
+#define NCSI_PKT_CMD_GNS 0x19 /* Get NCSI Statistics */
+#define NCSI_PKT_CMD_GNPTS 0x1a /* Get NCSI Pass-throu Statistics */
+#define NCSI_PKT_CMD_OEM 0x50 /* OEM */
+
+/* NCSI packet responses */
+#define NCSI_PKT_RSP_CIS (NCSI_PKT_CMD_CIS + 0x80)
+#define NCSI_PKT_RSP_SP (NCSI_PKT_CMD_SP + 0x80)
+#define NCSI_PKT_RSP_DP (NCSI_PKT_CMD_DP + 0x80)
+#define NCSI_PKT_RSP_EC (NCSI_PKT_CMD_EC + 0x80)
+#define NCSI_PKT_RSP_DC (NCSI_PKT_CMD_DC + 0x80)
+#define NCSI_PKT_RSP_RC (NCSI_PKT_CMD_RC + 0x80)
+#define NCSI_PKT_RSP_ECNT (NCSI_PKT_CMD_ECNT + 0x80)
+#define NCSI_PKT_RSP_DCNT (NCSI_PKT_CMD_DCNT + 0x80)
+#define NCSI_PKT_RSP_AE (NCSI_PKT_CMD_AE + 0x80)
+#define NCSI_PKT_RSP_SL (NCSI_PKT_CMD_SL + 0x80)
+#define NCSI_PKT_RSP_GLS (NCSI_PKT_CMD_GLS + 0x80)
+#define NCSI_PKT_RSP_SVF (NCSI_PKT_CMD_SVF + 0x80)
+#define NCSI_PKT_RSP_EV (NCSI_PKT_CMD_EV + 0x80)
+#define NCSI_PKT_RSP_DV (NCSI_PKT_CMD_DV + 0x80)
+#define NCSI_PKT_RSP_SMA (NCSI_PKT_CMD_SMA + 0x80)
+#define NCSI_PKT_RSP_EBF (NCSI_PKT_CMD_EBF + 0x80)
+#define NCSI_PKT_RSP_DBF (NCSI_PKT_CMD_DBF + 0x80)
+#define NCSI_PKT_RSP_EGMF (NCSI_PKT_CMD_EGMF + 0x80)
+#define NCSI_PKT_RSP_DGMF (NCSI_PKT_CMD_DGMF + 0x80)
+#define NCSI_PKT_RSP_SNFC (NCSI_PKT_CMD_SNFC + 0x80)
+#define NCSI_PKT_RSP_GVI (NCSI_PKT_CMD_GVI + 0x80)
+#define NCSI_PKT_RSP_GC (NCSI_PKT_CMD_GC + 0x80)
+#define NCSI_PKT_RSP_GP (NCSI_PKT_CMD_GP + 0x80)
+#define NCSI_PKT_RSP_GCPS (NCSI_PKT_CMD_GCPS + 0x80)
+#define NCSI_PKT_RSP_GNS (NCSI_PKT_CMD_GNS + 0x80)
+#define NCSI_PKT_RSP_GNPTS (NCSI_PKT_CMD_GNPTS + 0x80)
+#define NCSI_PKT_RSP_OEM (NCSI_PKT_CMD_OEM + 0x80)
+
+/* NCSI packet type: AEN */
+#define NCSI_PKT_AEN 0xFF /* AEN Packet */
+#define NCSI_PKT_AEN_LSC 0x00 /* Link status change */
+#define NCSI_PKT_AEN_CR 0x01 /* Configuration required */
+#define NCSI_PKT_AEN_HNCDSC 0x02 /* HNC driver status change */
+
+/* NCSI response code/reason */
+#define NCSI_PKT_RSP_C_COMPLETED 0x0000 /* Command Completed */
+#define NCSI_PKT_RSP_C_FAILED 0x0001 /* Command Failed */
+#define NCSI_PKT_RSP_C_UNAVAILABLE 0x0002 /* Command Unavailable */
+#define NCSI_PKT_RSP_C_UNSUPPORTED 0x0003 /* Command Unsupported */
+#define NCSI_PKT_RSP_R_NO_ERROR 0x0000 /* No Error */
+#define NCSI_PKT_RSP_R_INTERFACE 0x0001 /* Interface not ready */
+#define NCSI_PKT_RSP_R_PARAM 0x0002 /* Invalid Parameter */
+#define NCSI_PKT_RSP_R_CHANNEL 0x0003 /* Channel not Ready */
+#define NCSI_PKT_RSP_R_PACKAGE 0x0004 /* Package not Ready */
+#define NCSI_PKT_RSP_R_LENGTH 0x0005 /* Invalid payload length */
+#define NCSI_PKT_RSP_R_UNKNOWN 0x7fff /* Command type unsupported */
+
+/* NCSI AEN packet type */
+#define NCSI_PKT_AEN_LSC 0x00 /* Link status change */
+#define NCSI_PKT_AEN_CR 0x01 /* Configuration required */
+#define NCSI_PKT_AEN_HNCDSC 0x02 /* Host driver status change */
+
+#endif /* __NCSI_PKT_H__ */
diff --git a/net/ncsi/ncsi-rsp.c b/net/ncsi/ncsi-rsp.c
new file mode 100644
index 0000000..2b19653
--- /dev/null
+++ b/net/ncsi/ncsi-rsp.c
@@ -0,0 +1,1167 @@
+/*
+ * Copyright Gavin Shan, IBM Corporation 2015.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+
+#include <net/ncsi.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+
+#include "internal.h"
+#include "ncsi-pkt.h"
+
+static int ncsi_validate_rsp_pkt(struct ncsi_req *nr,
+ unsigned short payload)
+{
+ struct ncsi_rsp_pkt_hdr *h;
+ unsigned char *stream;
+ __be32 *checksum, csum;
+ __be32 high, low;
+ int i;
+
+ /*
+ * Check NCSI packet header. We don't need validate
+ * the packet type, which should have been checked
+ * before calling this function.
+ */
+ h = (struct ncsi_rsp_pkt_hdr *)skb_network_header(nr->nr_rsp);
+ if (h->common.revision != NCSI_PKT_REVISION)
+ return -EINVAL;
+ if (ntohs(h->common.length) != payload)
+ return -EINVAL;
+
+ /* Check on code and reason */
+ if (ntohs(h->code) != NCSI_PKT_RSP_C_COMPLETED ||
+ ntohs(h->reason) != NCSI_PKT_RSP_R_NO_ERROR)
+ return -EINVAL;
+
+ /*
+ * Validate checksum, which might be zeroes if the
+ * sender doesn't support checksum according to NCSI
+ * specification.
+ */
+ checksum = (__be32 *)((void *)(h + 1) + payload - 4);
+ if (ntohl(*checksum) == 0)
+ return 0;
+
+ csum = 0;
+ stream = (unsigned char *)h;
+ for (i = 0; i < sizeof(*h) + payload - 4; i += 2) {
+ high = stream[i];
+ low = stream[i + 1];
+ csum += ((high << 8) | low);
+ }
+
+ csum = ~csum + 1;
+ if (*checksum != htonl(csum))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_default(struct ncsi_req *nr)
+{
+ return ncsi_validate_rsp_pkt(nr, 0);
+}
+
+static int ncsi_rsp_handler_cis(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_package *np;
+ struct ncsi_channel *nc;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, &np, &nc);
+ if (!np)
+ return -ENODEV;
+
+ /* Add the channel if necessary */
+ if (!nc)
+ nc = ncsi_add_channel(np,
+ NCSI_CHANNEL_INDEX(rsp->rsp.common.channel));
+ else if (nc->nc_state == ncsi_channel_state_deselected_initial)
+ nc->nc_state = ncsi_channel_state_deselected_ready;
+ else if (nc->nc_state == ncsi_channel_state_selected_initial)
+ nc->nc_state = ncsi_channel_state_selected_ready;
+
+ return nc ? 0 : -ENODEV;
+}
+
+static int ncsi_rsp_handler_sp(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_package *np;
+ struct ncsi_channel *nc;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /*
+ * Add the package if it's not existing. Otherwise,
+ * to change the state of its child channels.
+ */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ &np, NULL);
+ if (!np) {
+ np = ncsi_add_package(ndp,
+ NCSI_PACKAGE_INDEX(rsp->rsp.common.channel));
+ if (!np)
+ return -ENODEV;
+ }
+
+ NCSI_FOR_EACH_CHANNEL(np, nc) {
+ if (nc->nc_state == ncsi_channel_state_deselected_initial)
+ nc->nc_state = ncsi_channel_state_selected_initial;
+ else if (nc->nc_state == ncsi_channel_state_deselected_ready)
+ nc->nc_state = ncsi_channel_state_selected_ready;
+ }
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_dp(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_package *np;
+ struct ncsi_channel *nc;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ &np, NULL);
+ if (!np)
+ return -ENODEV;
+
+ /* Change state of all channels attached to the package */
+ NCSI_FOR_EACH_CHANNEL(np, nc) {
+ if (nc->nc_state == ncsi_channel_state_selected_initial)
+ nc->nc_state = ncsi_channel_state_deselected_initial;
+ else if (nc->nc_state == ncsi_channel_state_selected_ready)
+ nc->nc_state = ncsi_channel_state_deselected_ready;
+ }
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_ec(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ ncm = &nc->nc_modes[NCSI_MODE_ENABLE];
+ if (ncm->ncm_enable)
+ return -EBUSY;
+
+ ncm->ncm_enable = 1;
+ return 0;
+}
+
+static int ncsi_rsp_handler_dc(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp= nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ ncm = &nc->nc_modes[NCSI_MODE_ENABLE];
+ if (!ncm->ncm_enable)
+ return -EBUSY;
+
+ ncm->ncm_enable = 0;;
+ return 0;
+}
+
+static int ncsi_rsp_handler_rc(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Update state for the specified channel */
+ if (nc->nc_state == ncsi_channel_state_deselected_ready)
+ nc->nc_state = ncsi_channel_state_deselected_initial;
+ else if (nc->nc_state == ncsi_channel_state_selected_ready)
+ nc->nc_state = ncsi_channel_state_selected_initial;
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_ecnt(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ ncm = &nc->nc_modes[NCSI_MODE_TX_ENABLE];
+ if (ncm->ncm_enable)
+ return -EBUSY;
+
+ ncm->ncm_enable = 1;
+ return 0;
+}
+
+static int ncsi_rsp_handler_dcnt(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ ncm = &nc->nc_modes[NCSI_MODE_TX_ENABLE];
+ if (!ncm->ncm_enable)
+ return -EBUSY;
+
+ ncm->ncm_enable = 1;
+ return 0;
+}
+
+static int ncsi_rsp_handler_ae(struct ncsi_req *nr)
+{
+ struct ncsi_cmd_ae_pkt *cmd;
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Check if the AEN has been enabled */
+ ncm = &nc->nc_modes[NCSI_MODE_AEN];
+ if (ncm->ncm_enable)
+ return -EBUSY;
+
+ /* Update to AEN configuration */
+ cmd = (struct ncsi_cmd_ae_pkt *)skb_network_header(nr->nr_cmd);
+ ncm->ncm_enable = 1;
+ ncm->ncm_data[0] = cmd->mc_id;
+ ncm->ncm_data[1] = ntohl(cmd->mode);
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_sl(struct ncsi_req *nr)
+{
+ struct ncsi_cmd_sl_pkt *cmd;
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ cmd = (struct ncsi_cmd_sl_pkt *)skb_network_header(nr->nr_cmd);
+ ncm = &nc->nc_modes[NCSI_MODE_LINK];
+ ncm->ncm_data[0] = ntohl(cmd->mode);
+ ncm->ncm_data[1] = ntohl(cmd->oem_mode);
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_gls(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_gls_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 16);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_gls_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ ncm = &nc->nc_modes[NCSI_MODE_LINK];
+ ncm->ncm_data[2] = ntohl(rsp->status);
+ ncm->ncm_data[3] = ntohl(rsp->other);
+ ncm->ncm_data[4] = ntohl(rsp->oem_status);
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_svf(struct ncsi_req *nr)
+{
+ struct ncsi_cmd_svf_pkt *cmd;
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_filter *ncf;
+ unsigned short vlan;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ cmd = (struct ncsi_cmd_svf_pkt *)skb_network_header(nr->nr_cmd);
+ ncf = nc->nc_filters[NCSI_FILTER_VLAN];
+ if (!ncf)
+ return -ENOENT;
+ if (cmd->index >= ncf->ncf_total)
+ return -ERANGE;
+
+ /* Add or remove the VLAN filter */
+ if (!(cmd->enable & 0x1)) {
+ ret = ncsi_del_channel_filter(nc, NCSI_FILTER_VLAN, cmd->index);
+ } else {
+ vlan = ntohs(cmd->vlan);
+ ret = ncsi_add_channel_filter(nc, NCSI_FILTER_VLAN, &vlan);
+ }
+
+ return ret;
+}
+
+static int ncsi_rsp_handler_ev(struct ncsi_req *nr)
+{
+ struct ncsi_cmd_ev_pkt *cmd;
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Check if VLAN mode has been enabled */
+ ncm = &nc->nc_modes[NCSI_MODE_VLAN];
+ if (ncm->ncm_enable)
+ return -EBUSY;
+
+ /* Update to VLAN mode */
+ cmd = (struct ncsi_cmd_ev_pkt *)skb_network_header(nr->nr_cmd);
+ ncm->ncm_enable = 1;
+ ncm->ncm_data[0] = ntohl(cmd->mode);
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_dv(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Check if VLAN mode has been enabled */
+ ncm = &nc->nc_modes[NCSI_MODE_VLAN];
+ if (!ncm->ncm_enable)
+ return -EBUSY;
+
+ /* Update to VLAN mode */
+ ncm->ncm_enable = 0;
+ return 0;
+}
+
+static int ncsi_rsp_handler_sma(struct ncsi_req *nr)
+{
+ struct ncsi_cmd_sma_pkt *cmd;
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_filter *ncf;
+ void *bitmap;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* According to NCSI spec 1.01, the mixed filter table
+ * isn't supported yet.
+ */
+ cmd = (struct ncsi_cmd_sma_pkt *)skb_network_header(nr->nr_cmd);
+ switch (cmd->at_e >> 5) {
+ case 0x0: /* UC address */
+ ncf = nc->nc_filters[NCSI_FILTER_UC];
+ break;
+ case 0x1: /* MC address */
+ ncf = nc->nc_filters[NCSI_FILTER_MC];
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Sanity check on the filter */
+ if (!ncf)
+ return -ENOENT;
+ else if (cmd->index >= ncf->ncf_total)
+ return -ERANGE;
+
+ bitmap = &ncf->ncf_bitmap;
+ if (cmd->at_e & 0x1) {
+ if (test_and_set_bit(cmd->index, bitmap))
+ return -EBUSY;
+ memcpy(ncf->ncf_data + 6 * cmd->index, cmd->mac, 6);
+ } else {
+ if (!test_and_clear_bit(cmd->index, bitmap))
+ return -EBUSY;
+
+ memset(ncf->ncf_data + 6 * cmd->index, 0, 6);
+ }
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_ebf(struct ncsi_req *nr)
+{
+ struct ncsi_cmd_ebf_pkt *cmd;
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the package and channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Check if broadcast filter has been enabled */
+ ncm = &nc->nc_modes[NCSI_MODE_BC];
+ if (ncm->ncm_enable)
+ return -EBUSY;
+
+ /* Update to broadcast filter mode */
+ cmd = (struct ncsi_cmd_ebf_pkt *)skb_network_header(nr->nr_cmd);
+ ncm->ncm_enable = 1;
+ ncm->ncm_data[0] = ntohl(cmd->mode);
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_dbf(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Check if broadcast filter isn't enabled */
+ ncm = &nc->nc_modes[NCSI_MODE_BC];
+ if (!ncm->ncm_enable)
+ return -EBUSY;
+
+ /* Update to broadcast filter mode */
+ ncm->ncm_enable = 0;
+ ncm->ncm_data[0] = 0;
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_egmf(struct ncsi_req *nr)
+{
+ struct ncsi_cmd_egmf_pkt *cmd;
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Check if multicast filter has been enabled */
+ ncm = &nc->nc_modes[NCSI_MODE_MC];
+ if (ncm->ncm_enable)
+ return -EBUSY;
+
+ /* Update to multicast filter mode */
+ cmd = (struct ncsi_cmd_egmf_pkt *)skb_network_header(nr->nr_cmd);
+ ncm->ncm_enable = 1;
+ ncm->ncm_data[0] = ntohl(cmd->mode);
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_dgmf(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Check if multicast filter has been enabled */
+ ncm = &nc->nc_modes[NCSI_MODE_MC];
+ if (!ncm->ncm_enable)
+ return -EBUSY;
+
+ /* Update to multicast filter mode */
+ ncm->ncm_enable = 0;
+ ncm->ncm_data[0] = 0;
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_snfc(struct ncsi_req *nr)
+{
+ struct ncsi_cmd_snfc_pkt *cmd;
+ struct ncsi_rsp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_mode *ncm;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 4);
+ if (ret)
+ return ret;
+
+ /* Find the channel */
+ rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Check if flow control has been enabled */
+ ncm = &nc->nc_modes[NCSI_MODE_FC];
+ if (ncm->ncm_enable)
+ return -EBUSY;
+
+ /* Update to flow control mode */
+ cmd = (struct ncsi_cmd_snfc_pkt *)skb_network_header(nr->nr_cmd);
+ ncm->ncm_enable = 1;
+ ncm->ncm_data[0] = cmd->mode;
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_gvi(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_gvi_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_version *ncv;
+ int i, ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 36);
+ if (ret)
+ return ret;
+
+ /* Find the channel */
+ rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Update to channel's version info */
+ ncv = &nc->nc_version;
+ ncv->ncv_version = ntohl(rsp->ncsi_version);
+ ncv->ncv_alpha2 = rsp->alpha2;
+ memcpy(ncv->ncv_fw_name, rsp->fw_name, 12);
+ ncv->ncv_fw_version = ntohl(rsp->fw_version);
+ for (i = 0; i < 4; i++)
+ ncv->ncv_pci_ids[i] = ntohs(rsp->pci_ids[i]);
+ ncv->ncv_mf_id = ntohl(rsp->mf_id);
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_gc(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_gc_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_filter *ncf;
+ size_t size, entry_size;
+ int cnt, i, ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 32);
+ if (ret)
+ return ret;
+
+ /* Find the channel */
+ rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Update channel's capabilities */
+ nc->nc_caps[NCSI_CAP_GENERIC].ncc_cap = ntohl(rsp->cap) &
+ NCSI_CAP_GENERIC_MASK;
+ nc->nc_caps[NCSI_CAP_BC].ncc_cap = ntohl(rsp->bc_cap) &
+ NCSI_CAP_BC_MASK;
+ nc->nc_caps[NCSI_CAP_MC].ncc_cap = ntohl(rsp->mc_cap) &
+ NCSI_CAP_MC_MASK;
+ nc->nc_caps[NCSI_CAP_BUFFER].ncc_cap = ntohl(rsp->buf_cap);
+ nc->nc_caps[NCSI_CAP_AEN].ncc_cap = ntohl(rsp->aen_cap) &
+ NCSI_CAP_AEN_MASK;
+ nc->nc_caps[NCSI_CAP_VLAN].ncc_cap = rsp->vlan_mode &
+ NCSI_CAP_VLAN_MASK;
+
+ /* Build filters */
+ for (i = 0; i < NCSI_FILTER_MAX; i++) {
+ switch (i) {
+ case NCSI_FILTER_VLAN:
+ cnt = rsp->vlan_cnt;
+ entry_size = 2;
+ break;
+ case NCSI_FILTER_MIXED:
+ cnt = rsp->mixed_cnt;
+ entry_size = 6;
+ break;
+ case NCSI_FILTER_MC:
+ cnt = rsp->mc_cnt;
+ entry_size = 6;
+ break;
+ case NCSI_FILTER_UC:
+ cnt = rsp->uc_cnt;
+ entry_size = 6;
+ break;
+ default:
+ continue;
+ }
+
+ if (!cnt || nc->nc_filters[i])
+ continue;
+
+ size = sizeof(*ncf) + cnt * entry_size;
+ ncf = kzalloc(size, GFP_ATOMIC);
+ if (!ncf) {
+ pr_warn("%s: Cannot alloc filter table (%d)\n",
+ __func__, i);
+ return -ENOMEM;
+ }
+
+ ncf->ncf_index = i;
+ ncf->ncf_total = cnt;
+ ncf->ncf_bitmap = 0x0ul;
+ nc->nc_filters[i] = ncf;
+ }
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_gp(struct ncsi_req *nr)
+{
+ struct ncsi_pkt_hdr *h;
+ struct ncsi_rsp_gp_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ unsigned short length, enable, vlan;
+ unsigned char *pdata;
+ int table, i, ret;
+
+ /*
+ * The get parameter response packet has variable length.
+ * The payload should be figured out from the packet
+ * header, instead of the fixed one we have for other types
+ * of packets.
+ */
+ h = (struct ncsi_pkt_hdr *)skb_network_header(nr->nr_rsp);
+ length = ntohs(h->length);
+ if (length < 32)
+ return -EINVAL;
+
+ ret = ncsi_validate_rsp_pkt( nr, length);
+ if (ret)
+ return ret;
+
+ /* Find the channel */
+ rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Modes with explicit enabled indications */
+ if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */
+ nc->nc_modes[NCSI_MODE_BC].ncm_enable = 1;
+ nc->nc_modes[NCSI_MODE_BC].ncm_data[0] = ntohl(rsp->bc_mode);
+ }
+ if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */
+ nc->nc_modes[NCSI_MODE_ENABLE].ncm_enable = 1;
+ if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */
+ nc->nc_modes[NCSI_MODE_TX_ENABLE].ncm_enable = 1;
+ if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */
+ nc->nc_modes[NCSI_MODE_MC].ncm_enable = 1;
+
+ /* Modes without explicit enabled indications */
+ nc->nc_modes[NCSI_MODE_LINK].ncm_enable = 1;
+ nc->nc_modes[NCSI_MODE_LINK].ncm_data[0] = ntohl(rsp->link_mode);
+ nc->nc_modes[NCSI_MODE_VLAN].ncm_enable = 1;
+ nc->nc_modes[NCSI_MODE_VLAN].ncm_data[0] = rsp->vlan_mode;
+ nc->nc_modes[NCSI_MODE_FC].ncm_enable = 1;
+ nc->nc_modes[NCSI_MODE_FC].ncm_data[0] = rsp->fc_mode;
+ nc->nc_modes[NCSI_MODE_AEN].ncm_enable = 1;
+ nc->nc_modes[NCSI_MODE_AEN].ncm_data[0] = ntohl(rsp->aen_mode);
+
+ /* MAC addresses filter table */
+ pdata = (unsigned char *)rsp + 48;
+ enable = rsp->mac_enable;
+ for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) {
+ if (i >= (nc->nc_filters[NCSI_FILTER_UC]->ncf_total +
+ nc->nc_filters[NCSI_FILTER_MC]->ncf_total))
+ table = NCSI_FILTER_MIXED;
+ else if (i >= nc->nc_filters[NCSI_FILTER_UC]->ncf_total)
+ table = NCSI_FILTER_MC;
+ else
+ table = NCSI_FILTER_UC;
+
+ if (!(enable & (0x1 << i)))
+ continue;
+
+ if (ncsi_find_channel_filter(nc, table, pdata) >= 0)
+ continue;
+
+ ncsi_add_channel_filter(nc, table, pdata);
+ }
+
+ /* VLAN filter table */
+ enable = ntohs(rsp->vlan_enable);
+ for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) {
+ if (!(enable & (0x1 << i)))
+ continue;
+
+ vlan = ntohs(*(__be16 *)pdata);
+ if (ncsi_find_channel_filter(nc, NCSI_FILTER_VLAN, &vlan) >= 0)
+ continue;
+
+ ncsi_add_channel_filter(nc, NCSI_FILTER_VLAN, &vlan);
+ }
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_gcps(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_gcps_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_stats *ncs;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 172);
+ if (ret)
+ return ret;
+
+ /* Find the channel */
+ rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Update HNC's statistics */
+ ncs = &nc->nc_stats;
+ ncs->ncs_hnc_cnt_hi = ntohl(rsp->cnt_hi);
+ ncs->ncs_hnc_cnt_lo = ntohl(rsp->cnt_lo);
+ ncs->ncs_hnc_rx_bytes = ntohl(rsp->rx_bytes);
+ ncs->ncs_hnc_tx_bytes = ntohl(rsp->tx_bytes);
+ ncs->ncs_hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts);
+ ncs->ncs_hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts);
+ ncs->ncs_hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts);
+ ncs->ncs_hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts);
+ ncs->ncs_hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts);
+ ncs->ncs_hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts);
+ ncs->ncs_hnc_fcs_err = ntohl(rsp->fcs_err);
+ ncs->ncs_hnc_align_err = ntohl(rsp->align_err);
+ ncs->ncs_hnc_false_carrier = ntohl(rsp->false_carrier);
+ ncs->ncs_hnc_runt_pkts = ntohl(rsp->runt_pkts);
+ ncs->ncs_hnc_jabber_pkts = ntohl(rsp->jabber_pkts);
+ ncs->ncs_hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon);
+ ncs->ncs_hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff);
+ ncs->ncs_hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon);
+ ncs->ncs_hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff);
+ ncs->ncs_hnc_tx_s_collision = ntohl(rsp->tx_s_collision);
+ ncs->ncs_hnc_tx_m_collision = ntohl(rsp->tx_m_collision);
+ ncs->ncs_hnc_l_collision = ntohl(rsp->l_collision);
+ ncs->ncs_hnc_e_collision = ntohl(rsp->e_collision);
+ ncs->ncs_hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames);
+ ncs->ncs_hnc_rx_64_frames = ntohl(rsp->rx_64_frames);
+ ncs->ncs_hnc_rx_127_frames = ntohl(rsp->rx_127_frames);
+ ncs->ncs_hnc_rx_255_frames = ntohl(rsp->rx_255_frames);
+ ncs->ncs_hnc_rx_511_frames = ntohl(rsp->rx_511_frames);
+ ncs->ncs_hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames);
+ ncs->ncs_hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames);
+ ncs->ncs_hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames);
+ ncs->ncs_hnc_tx_64_frames = ntohl(rsp->tx_64_frames);
+ ncs->ncs_hnc_tx_127_frames = ntohl(rsp->tx_127_frames);
+ ncs->ncs_hnc_tx_255_frames = ntohl(rsp->tx_255_frames);
+ ncs->ncs_hnc_tx_511_frames = ntohl(rsp->tx_511_frames);
+ ncs->ncs_hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames);
+ ncs->ncs_hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames);
+ ncs->ncs_hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames);
+ ncs->ncs_hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes);
+ ncs->ncs_hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts);
+ ncs->ncs_hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts);
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_gns(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_gns_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_stats *ncs;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 172);
+ if (ret)
+ return ret;
+
+ /* Find the channel */
+ rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Update HNC's statistics */
+ ncs = &nc->nc_stats;
+ ncs->ncs_ncsi_rx_cmds = ntohl(rsp->rx_cmds);
+ ncs->ncs_ncsi_dropped_cmds = ntohl(rsp->dropped_cmds);
+ ncs->ncs_ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs);
+ ncs->ncs_ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs);
+ ncs->ncs_ncsi_rx_pkts = ntohl(rsp->rx_pkts);
+ ncs->ncs_ncsi_tx_pkts = ntohl(rsp->tx_pkts);
+ ncs->ncs_ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts);
+
+ return 0;
+}
+
+static int ncsi_rsp_handler_gnpts(struct ncsi_req *nr)
+{
+ struct ncsi_rsp_gnpts_pkt *rsp;
+ struct ncsi_dev_priv *ndp = nr->nr_ndp;
+ struct ncsi_channel *nc;
+ struct ncsi_channel_stats *ncs;
+ int ret;
+
+ ret = ncsi_validate_rsp_pkt( nr, 172);
+ if (ret)
+ return ret;
+
+ /* Find the channel */
+ rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->nr_rsp);
+ ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
+ NULL, &nc);
+ if (!nc)
+ return -ENODEV;
+
+ /* Update HNC's statistics */
+ ncs = &nc->nc_stats;
+ ncs->ncs_pt_tx_pkts = ntohl(rsp->tx_pkts);
+ ncs->ncs_pt_tx_dropped = ntohl(rsp->tx_dropped);
+ ncs->ncs_pt_tx_channel_err = ntohl(rsp->tx_channel_err);
+ ncs->ncs_pt_tx_us_err = ntohl(rsp->tx_us_err);
+ ncs->ncs_pt_rx_pkts = ntohl(rsp->rx_pkts);
+ ncs->ncs_pt_rx_dropped = ntohl(rsp->rx_dropped);
+ ncs->ncs_pt_rx_channel_err = ntohl(rsp->rx_channel_err);
+ ncs->ncs_pt_rx_us_err = ntohl(rsp->rx_us_err);
+ ncs->ncs_pt_rx_os_err = ntohl(rsp->rx_os_err);
+
+ return 0;
+}
+
+static struct ncsi_rsp_handler {
+ unsigned char nrh_type;
+ int (*nrh_handler)(struct ncsi_req *nr);
+} ncsi_rsp_handlers[] = {
+ { NCSI_PKT_RSP_CIS, ncsi_rsp_handler_cis },
+ { NCSI_PKT_RSP_SP, ncsi_rsp_handler_sp },
+ { NCSI_PKT_RSP_DP, ncsi_rsp_handler_dp },
+ { NCSI_PKT_RSP_EC, ncsi_rsp_handler_ec },
+ { NCSI_PKT_RSP_DC, ncsi_rsp_handler_dc },
+ { NCSI_PKT_RSP_RC, ncsi_rsp_handler_rc },
+ { NCSI_PKT_RSP_ECNT, ncsi_rsp_handler_ecnt },
+ { NCSI_PKT_RSP_DCNT, ncsi_rsp_handler_dcnt },
+ { NCSI_PKT_RSP_AE, ncsi_rsp_handler_ae },
+ { NCSI_PKT_RSP_SL, ncsi_rsp_handler_sl },
+ { NCSI_PKT_RSP_GLS, ncsi_rsp_handler_gls },
+ { NCSI_PKT_RSP_SVF, ncsi_rsp_handler_svf },
+ { NCSI_PKT_RSP_EV, ncsi_rsp_handler_ev },
+ { NCSI_PKT_RSP_DV, ncsi_rsp_handler_dv },
+ { NCSI_PKT_RSP_SMA, ncsi_rsp_handler_sma },
+ { NCSI_PKT_RSP_EBF, ncsi_rsp_handler_ebf },
+ { NCSI_PKT_RSP_DBF, ncsi_rsp_handler_dbf },
+ { NCSI_PKT_RSP_EGMF, ncsi_rsp_handler_egmf },
+ { NCSI_PKT_RSP_DGMF, ncsi_rsp_handler_dgmf },
+ { NCSI_PKT_RSP_SNFC, ncsi_rsp_handler_snfc },
+ { NCSI_PKT_RSP_GVI, ncsi_rsp_handler_gvi },
+ { NCSI_PKT_RSP_GC, ncsi_rsp_handler_gc },
+ { NCSI_PKT_RSP_GP, ncsi_rsp_handler_gp },
+ { NCSI_PKT_RSP_GCPS, ncsi_rsp_handler_gcps },
+ { NCSI_PKT_RSP_GNS, ncsi_rsp_handler_gns },
+ { NCSI_PKT_RSP_GNPTS, ncsi_rsp_handler_gnpts },
+ { NCSI_PKT_RSP_OEM, ncsi_rsp_handler_default },
+ { 0, NULL }
+};
+
+#if 0
+void ncsi_pkt_dump(struct sk_buff *skb)
+{
+ struct skb_shared_info *info = skb_shinfo(skb);
+ skb_frag_t *frag;
+ char *data;
+ int limit, i;
+
+ pr_info("head: 0x%p data: 0x%p tail: 0x%p end: 0x%p\n",
+ skb->head, skb->data,
+ skb_tail_pointer(skb), skb_end_pointer(skb));
+ pr_info("mac_header: 0x%p network_header: 0x%p\n",
+ skb_mac_header(skb), skb_network_header(skb));
+ pr_info("len: 0x%x data_len: 0x%x truesize: 0x%x\n",
+ skb->len, skb->data_len, skb->truesize);
+
+ for (i = 0; i < info->nr_frags; i++) {
+ frag = &info->frags[i];
+ pr_info("FRAG[%d]: 0x%p offset: 0x%x size: 0x%x\n",
+ i, frag->page.p, frag->page_offset, frag->size);
+ }
+
+ data = skb_mac_header(skb);
+ limit = skb->len + sizeof(struct ethhdr);
+ for (i = 0; i < limit; data++, i++) {
+ if (i % 16 == 0)
+ printk("\n%02x ", *data);
+ else
+ printk("%02x ", *data);
+ }
+}
+#endif
+
+int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt, struct net_device *orig_dev)
+{
+ struct ncsi_rsp_handler *nrh = NULL;
+ struct ncsi_dev *nd;
+ struct ncsi_dev_priv *ndp;
+ struct ncsi_req *nr;
+ struct ncsi_pkt_hdr *hdr;
+ int ret;
+
+ /* Find the NCSI device */
+ nd = ncsi_find_dev(dev);
+ ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL;
+ if (!ndp)
+ return -ENODEV;
+
+ /* Check if it's AEN packet */
+ hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb);
+ if (hdr->type == NCSI_PKT_AEN)
+ return ncsi_aen_handler(ndp, skb);
+
+ /* Find the handler */
+ nrh = ncsi_rsp_handlers;
+ while (nrh->nrh_handler) {
+ if (nrh->nrh_type == hdr->type)
+ break;
+
+ nrh++;
+ }
+
+ if (!nrh->nrh_handler) {
+ pr_warn("NCSI: Received unrecognized packet (0x%x)\n",
+ hdr->type);
+ return -ENOENT;
+ }
+
+ /* Associate with the request */
+ nr = &ndp->ndp_reqs[hdr->id];
+ spin_lock(&ndp->ndp_req_lock);
+ if (!nr->nr_used) {
+ spin_unlock(&ndp->ndp_req_lock);
+ return -ENODEV;
+ }
+
+ nr->nr_rsp = skb;
+ if (!nr->nr_timer_enabled) {
+ spin_unlock(&ndp->ndp_req_lock);
+ ret = -ENOENT;
+ goto out;
+ }
+
+ /* Process the response */
+ ret = nrh->nrh_handler(nr);
+
+out:
+ ncsi_free_req(nr, true, false);
+ return ret;
+}
--
2.1.0
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists