[PATCH 03/10] net/ncsi: NCSI response packet handler
Joel Stanley
joel at jms.id.au
Fri Jul 1 00:05:15 AEST 2016
On Thu, Jun 30, 2016 at 7:57 PM, Gavin Shan <gwshan at linux.vnet.ibm.com> wrote:
> The NCSI response packets are sent to MC (Management Controller)
> from the remote end. They are responses of NCSI command packets
> for multiple purposes: completion status of NCSI command packets,
> return NCSI channel's capability or configuration etc.
>
> This defines struct to represent NCSI response packets and introduces
> function ncsi_rcv_rsp() which will be used to receive NCSI response
> packets and parse them.
>
> Signed-off-by: Gavin Shan <gwshan at linux.vnet.ibm.com>
> ---
> net/ncsi/Makefile | 2 +-
> net/ncsi/internal.h | 2 +
> net/ncsi/ncsi-pkt.h | 191 +++++++++
> net/ncsi/ncsi-rsp.c | 1159 +++++++++++++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 1353 insertions(+), 1 deletion(-)
> create mode 100644 net/ncsi/ncsi-rsp.c
>
> diff --git a/net/ncsi/Makefile b/net/ncsi/Makefile
> index abc4046..4751819 100644
> --- a/net/ncsi/Makefile
> +++ b/net/ncsi/Makefile
> @@ -1,4 +1,4 @@
> #
> # Makefile for NCSI API
> #
> -obj-$(CONFIG_NET_NCSI) += ncsi-cmd.o ncsi-manage.o
> +obj-$(CONFIG_NET_NCSI) += ncsi-cmd.o ncsi-rsp.o ncsi-manage.o
> diff --git a/net/ncsi/internal.h b/net/ncsi/internal.h
> index 0c51c89..d435f91 100644
> --- a/net/ncsi/internal.h
> +++ b/net/ncsi/internal.h
> @@ -267,5 +267,7 @@ 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);
>
> #endif /* __NCSI_INTERNAL_H__ */
> diff --git a/net/ncsi/ncsi-pkt.h b/net/ncsi/ncsi-pkt.h
> index 7f030b5..95882f3 100644
> --- a/net/ncsi/ncsi-pkt.h
> +++ b/net/ncsi/ncsi-pkt.h
> @@ -25,6 +25,12 @@ 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 */
> +};
> +
> /* NCSI common command packet */
> struct ncsi_cmd_pkt {
> struct ncsi_cmd_pkt_hdr cmd; /* Command header */
> @@ -32,6 +38,12 @@ struct ncsi_cmd_pkt {
> 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 */
> @@ -133,6 +145,143 @@ struct ncsi_cmd_snfc_pkt {
> unsigned char pad[22];
> };
>
> +/* 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;
> + unsigned char pad[10];
> +};
> +
> +/* 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 */
> +};
> +
> /* NCSI packet revision */
> #define NCSI_PKT_REVISION 0x01
>
> @@ -165,4 +314,46 @@ struct ncsi_cmd_snfc_pkt {
> #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 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 */
> +
> #endif /* __NCSI_PKT_H__ */
> diff --git a/net/ncsi/ncsi-rsp.c b/net/ncsi/ncsi-rsp.c
> new file mode 100644
> index 0000000..257079fc
> --- /dev/null
> +++ b/net/ncsi/ncsi-rsp.c
> @@ -0,0 +1,1159 @@
> +/*
> + * Copyright Gavin Shan, IBM Corporation 2016.
> + *
> + * 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;
This chunk is also in patch 2. Perhaps a function?
> + 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;
> + unsigned char id;
> + 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 (!nc) {
> + id = NCSI_CHANNEL_INDEX(rsp->rsp.common.channel);
> + nc = ncsi_add_channel(np, id);
> + } 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;
> + unsigned char id;
> + int ret;
> +
> + ret = ncsi_validate_rsp_pkt(nr, 4);
What's the 4?
> + if (ret)
> + return ret;
> +
> + /* Add the package if it's not existing. Otherwise,
> + * to change the state of its child channels.
> + */
Perhaps:
/*
* Add the package if it does not exist. Otherwise change the
* state of the package's 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) {
> + id = NCSI_PACKAGE_INDEX(rsp->rsp.common.channel);
> + np = ncsi_add_package(ndp, id);
> + if (!np)
> + return -ENODEV;
I recall when doing bring up I think this was a location where we
would fail to find anything. Should we add some error messages instead
of returning silently?
I think you should be able to reproduce by having the pinmux incorrectly set.
> + }
> +
> + 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)
What's dp? Depopulate?
> +{
> + 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++)
ARRAY_SIZE(ncv->ncv_pci_ids) instead of 4
> + 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
Not sure how you will go getting this in. I assume you don't make it
run-time enabled as you're concerned with performance?
> +static 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;
> + unsigned long flags;
> + int ret;
> +
> + /* Find the NCSI device */
> + nd = ncsi_find_dev(dev);
> + ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL;
> + if (!ndp)
> + return -ENODEV;
> +
> + /* Find the handler */
> + hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb);
> + 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_irqsave(&ndp->ndp_req_lock, flags);
> + if (!nr->nr_used) {
> + spin_unlock_irqrestore(&ndp->ndp_req_lock, flags);
> + return -ENODEV;
> + }
> +
> + nr->nr_rsp = skb;
> + if (!nr->nr_timer_enabled) {
> + ret = -ENOENT;
> + goto out;
> + }
> +
> + /* Process the response */
> + ret = nrh->nrh_handler(nr);
> +
> +out:
> + spin_unlock_irqrestore(&ndp->ndp_req_lock, flags);
> + ncsi_free_req(nr, true, false);
> + return ret;
> +}
> --
> 2.1.0
>
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