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linux/net/ncsi/ncsi-rsp.c
Samuel Mendoza-Jonas 04bad8bda9 net/ncsi: Don't return error on normal response 
Several response handlers return EBUSY if the data corresponding to the
command/response pair is already set. There is no reason to return an
error here; the channel is advertising something as enabled because we
told it to enable it, and it's possible that the feature has been
enabled previously.

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 15:09:44 +09:00

1049 lines
27 KiB
C
Raw Blame History

/*
* 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_request *nr,
unsigned short payload)
{
struct ncsi_rsp_pkt_hdr *h;
u32 checksum;
__be32 *pchecksum;
/* 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->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.
*/
pchecksum = (__be32 *)((void *)(h + 1) + payload - 4);
if (ntohl(*pchecksum) == 0)
return 0;
checksum = ncsi_calculate_checksum((unsigned char *)h,
sizeof(*h) + payload - 4);
if (*pchecksum != htonl(checksum))
return -EINVAL;
return 0;
}
static int ncsi_rsp_handler_cis(struct ncsi_request *nr)
{
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_package *np;
struct ncsi_channel *nc;
unsigned char id;
rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, &np, &nc);
if (!nc) {
if (ndp->flags & NCSI_DEV_PROBED)
return -ENXIO;
id = NCSI_CHANNEL_INDEX(rsp->rsp.common.channel);
nc = ncsi_add_channel(np, id);
}
return nc ? 0 : -ENODEV;
}
static int ncsi_rsp_handler_sp(struct ncsi_request *nr)
{
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_package *np;
unsigned char id;
/* 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->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
&np, NULL);
if (!np) {
if (ndp->flags & NCSI_DEV_PROBED)
return -ENXIO;
id = NCSI_PACKAGE_INDEX(rsp->rsp.common.channel);
np = ncsi_add_package(ndp, id);
if (!np)
return -ENODEV;
}
return 0;
}
static int ncsi_rsp_handler_dp(struct ncsi_request *nr)
{
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_package *np;
struct ncsi_channel *nc;
unsigned long flags;
/* Find the package */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(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) {
spin_lock_irqsave(&nc->lock, flags);
nc->state = NCSI_CHANNEL_INACTIVE;
spin_unlock_irqrestore(&nc->lock, flags);
}
return 0;
}
static int ncsi_rsp_handler_ec(struct ncsi_request *nr)
{
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
NULL, &nc);
if (!nc)
return -ENODEV;
ncm = &nc->modes[NCSI_MODE_ENABLE];
if (ncm->enable)
return 0;
ncm->enable = 1;
return 0;
}
static int ncsi_rsp_handler_dc(struct ncsi_request *nr)
{
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = 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->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
NULL, &nc);
if (!nc)
return -ENODEV;
ncm = &nc->modes[NCSI_MODE_ENABLE];
if (!ncm->enable)
return 0;
ncm->enable = 0;
return 0;
}
static int ncsi_rsp_handler_rc(struct ncsi_request *nr)
{
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
unsigned long flags;
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
NULL, &nc);
if (!nc)
return -ENODEV;
/* Update state for the specified channel */
spin_lock_irqsave(&nc->lock, flags);
nc->state = NCSI_CHANNEL_INACTIVE;
spin_unlock_irqrestore(&nc->lock, flags);
return 0;
}
static int ncsi_rsp_handler_ecnt(struct ncsi_request *nr)
{
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
NULL, &nc);
if (!nc)
return -ENODEV;
ncm = &nc->modes[NCSI_MODE_TX_ENABLE];
if (ncm->enable)
return 0;
ncm->enable = 1;
return 0;
}
static int ncsi_rsp_handler_dcnt(struct ncsi_request *nr)
{
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
NULL, &nc);
if (!nc)
return -ENODEV;
ncm = &nc->modes[NCSI_MODE_TX_ENABLE];
if (!ncm->enable)
return 0;
ncm->enable = 1;
return 0;
}
static int ncsi_rsp_handler_ae(struct ncsi_request *nr)
{
struct ncsi_cmd_ae_pkt *cmd;
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(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->modes[NCSI_MODE_AEN];
if (ncm->enable)
return 0;
/* Update to AEN configuration */
cmd = (struct ncsi_cmd_ae_pkt *)skb_network_header(nr->cmd);
ncm->enable = 1;
ncm->data[0] = cmd->mc_id;
ncm->data[1] = ntohl(cmd->mode);
return 0;
}
static int ncsi_rsp_handler_sl(struct ncsi_request *nr)
{
struct ncsi_cmd_sl_pkt *cmd;
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(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->cmd);
ncm = &nc->modes[NCSI_MODE_LINK];
ncm->data[0] = ntohl(cmd->mode);
ncm->data[1] = ntohl(cmd->oem_mode);
return 0;
}
static int ncsi_rsp_handler_gls(struct ncsi_request *nr)
{
struct ncsi_rsp_gls_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
unsigned long flags;
/* Find the package and channel */
rsp = (struct ncsi_rsp_gls_pkt *)skb_network_header(nr->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
NULL, &nc);
if (!nc)
return -ENODEV;
ncm = &nc->modes[NCSI_MODE_LINK];
ncm->data[2] = ntohl(rsp->status);
ncm->data[3] = ntohl(rsp->other);
ncm->data[4] = ntohl(rsp->oem_status);
if (nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN)
return 0;
/* Reset the channel monitor if it has been enabled */
spin_lock_irqsave(&nc->lock, flags);
nc->monitor.state = NCSI_CHANNEL_MONITOR_START;
spin_unlock_irqrestore(&nc->lock, flags);
return 0;
}
static int ncsi_rsp_handler_svf(struct ncsi_request *nr)
{
struct ncsi_cmd_svf_pkt *cmd;
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_filter *ncf;
unsigned short vlan;
int ret;
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(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->cmd);
ncf = nc->filters[NCSI_FILTER_VLAN];
if (!ncf)
return -ENOENT;
if (cmd->index >= ncf->total)
return -ERANGE;
/* Add or remove the VLAN filter */
if (!(cmd->enable & 0x1)) {
/* HW indexes from 1 */
ret = ncsi_remove_filter(nc, NCSI_FILTER_VLAN, cmd->index - 1);
} else {
vlan = ntohs(cmd->vlan);
ret = ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan);
}
return ret;
}
static int ncsi_rsp_handler_ev(struct ncsi_request *nr)
{
struct ncsi_cmd_ev_pkt *cmd;
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(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->modes[NCSI_MODE_VLAN];
if (ncm->enable)
return 0;
/* Update to VLAN mode */
cmd = (struct ncsi_cmd_ev_pkt *)skb_network_header(nr->cmd);
ncm->enable = 1;
ncm->data[0] = ntohl(cmd->mode);
return 0;
}
static int ncsi_rsp_handler_dv(struct ncsi_request *nr)
{
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(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->modes[NCSI_MODE_VLAN];
if (!ncm->enable)
return 0;
/* Update to VLAN mode */
ncm->enable = 0;
return 0;
}
static int ncsi_rsp_handler_sma(struct ncsi_request *nr)
{
struct ncsi_cmd_sma_pkt *cmd;
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_filter *ncf;
void *bitmap;
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(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->cmd);
switch (cmd->at_e >> 5) {
case 0x0: /* UC address */
ncf = nc->filters[NCSI_FILTER_UC];
break;
case 0x1: /* MC address */
ncf = nc->filters[NCSI_FILTER_MC];
break;
default:
return -EINVAL;
}
/* Sanity check on the filter */
if (!ncf)
return -ENOENT;
else if (cmd->index >= ncf->total)
return -ERANGE;
bitmap = &ncf->bitmap;
if (cmd->at_e & 0x1) {
set_bit(cmd->index, bitmap);
memcpy(ncf->data + 6 * cmd->index, cmd->mac, 6);
} else {
clear_bit(cmd->index, bitmap);
memset(ncf->data + 6 * cmd->index, 0, 6);
}
return 0;
}
static int ncsi_rsp_handler_ebf(struct ncsi_request *nr)
{
struct ncsi_cmd_ebf_pkt *cmd;
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
/* Find the package and channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(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->modes[NCSI_MODE_BC];
if (ncm->enable)
return 0;
/* Update to broadcast filter mode */
cmd = (struct ncsi_cmd_ebf_pkt *)skb_network_header(nr->cmd);
ncm->enable = 1;
ncm->data[0] = ntohl(cmd->mode);
return 0;
}
static int ncsi_rsp_handler_dbf(struct ncsi_request *nr)
{
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
rsp = (struct ncsi_rsp_pkt *)skb_network_header(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->modes[NCSI_MODE_BC];
if (!ncm->enable)
return 0;
/* Update to broadcast filter mode */
ncm->enable = 0;
ncm->data[0] = 0;
return 0;
}
static int ncsi_rsp_handler_egmf(struct ncsi_request *nr)
{
struct ncsi_cmd_egmf_pkt *cmd;
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
/* Find the channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(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->modes[NCSI_MODE_MC];
if (ncm->enable)
return 0;
/* Update to multicast filter mode */
cmd = (struct ncsi_cmd_egmf_pkt *)skb_network_header(nr->cmd);
ncm->enable = 1;
ncm->data[0] = ntohl(cmd->mode);
return 0;
}
static int ncsi_rsp_handler_dgmf(struct ncsi_request *nr)
{
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
rsp = (struct ncsi_rsp_pkt *)skb_network_header(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->modes[NCSI_MODE_MC];
if (!ncm->enable)
return 0;
/* Update to multicast filter mode */
ncm->enable = 0;
ncm->data[0] = 0;
return 0;
}
static int ncsi_rsp_handler_snfc(struct ncsi_request *nr)
{
struct ncsi_cmd_snfc_pkt *cmd;
struct ncsi_rsp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_mode *ncm;
/* Find the channel */
rsp = (struct ncsi_rsp_pkt *)skb_network_header(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->modes[NCSI_MODE_FC];
if (ncm->enable)
return 0;
/* Update to flow control mode */
cmd = (struct ncsi_cmd_snfc_pkt *)skb_network_header(nr->cmd);
ncm->enable = 1;
ncm->data[0] = cmd->mode;
return 0;
}
static int ncsi_rsp_handler_gvi(struct ncsi_request *nr)
{
struct ncsi_rsp_gvi_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_version *ncv;
int i;
/* Find the channel */
rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(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->version;
ncv->version = ntohl(rsp->ncsi_version);
ncv->alpha2 = rsp->alpha2;
memcpy(ncv->fw_name, rsp->fw_name, 12);
ncv->fw_version = ntohl(rsp->fw_version);
for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++)
ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]);
ncv->mf_id = ntohl(rsp->mf_id);
return 0;
}
static int ncsi_rsp_handler_gc(struct ncsi_request *nr)
{
struct ncsi_rsp_gc_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_filter *ncf;
size_t size, entry_size;
int cnt, i;
/* Find the channel */
rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
NULL, &nc);
if (!nc)
return -ENODEV;
/* Update channel's capabilities */
nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) &
NCSI_CAP_GENERIC_MASK;
nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) &
NCSI_CAP_BC_MASK;
nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) &
NCSI_CAP_MC_MASK;
nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap);
nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) &
NCSI_CAP_AEN_MASK;
nc->caps[NCSI_CAP_VLAN].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->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->index = i;
ncf->total = cnt;
if (i == NCSI_FILTER_VLAN) {
/* Set VLAN filters active so they are cleared in
* first configuration state
*/
ncf->bitmap = U64_MAX;
} else {
ncf->bitmap = 0x0ul;
}
nc->filters[i] = ncf;
}
return 0;
}
static int ncsi_rsp_handler_gp(struct ncsi_request *nr)
{
struct ncsi_rsp_gp_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
unsigned short enable, vlan;
unsigned char *pdata;
int table, i;
/* Find the channel */
rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(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->modes[NCSI_MODE_BC].enable = 1;
nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode);
}
if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */
nc->modes[NCSI_MODE_ENABLE].enable = 1;
if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */
nc->modes[NCSI_MODE_TX_ENABLE].enable = 1;
if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */
nc->modes[NCSI_MODE_MC].enable = 1;
/* Modes without explicit enabled indications */
nc->modes[NCSI_MODE_LINK].enable = 1;
nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode);
nc->modes[NCSI_MODE_VLAN].enable = 1;
nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode;
nc->modes[NCSI_MODE_FC].enable = 1;
nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode;
nc->modes[NCSI_MODE_AEN].enable = 1;
nc->modes[NCSI_MODE_AEN].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->filters[NCSI_FILTER_UC]->total +
nc->filters[NCSI_FILTER_MC]->total))
table = NCSI_FILTER_MIXED;
else if (i >= nc->filters[NCSI_FILTER_UC]->total)
table = NCSI_FILTER_MC;
else
table = NCSI_FILTER_UC;
if (!(enable & (0x1 << i)))
continue;
if (ncsi_find_filter(nc, table, pdata) >= 0)
continue;
ncsi_add_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_filter(nc, NCSI_FILTER_VLAN, &vlan) >= 0)
continue;
ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan);
}
return 0;
}
static int ncsi_rsp_handler_gcps(struct ncsi_request *nr)
{
struct ncsi_rsp_gcps_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_stats *ncs;
/* Find the channel */
rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
NULL, &nc);
if (!nc)
return -ENODEV;
/* Update HNC's statistics */
ncs = &nc->stats;
ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi);
ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo);
ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes);
ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes);
ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts);
ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts);
ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts);
ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts);
ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts);
ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts);
ncs->hnc_fcs_err = ntohl(rsp->fcs_err);
ncs->hnc_align_err = ntohl(rsp->align_err);
ncs->hnc_false_carrier = ntohl(rsp->false_carrier);
ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts);
ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts);
ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon);
ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff);
ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon);
ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff);
ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision);
ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision);
ncs->hnc_l_collision = ntohl(rsp->l_collision);
ncs->hnc_e_collision = ntohl(rsp->e_collision);
ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames);
ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames);
ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames);
ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames);
ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames);
ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames);
ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames);
ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames);
ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames);
ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames);
ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames);
ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames);
ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames);
ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames);
ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames);
ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes);
ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts);
ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts);
return 0;
}
static int ncsi_rsp_handler_gns(struct ncsi_request *nr)
{
struct ncsi_rsp_gns_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_stats *ncs;
/* Find the channel */
rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
NULL, &nc);
if (!nc)
return -ENODEV;
/* Update HNC's statistics */
ncs = &nc->stats;
ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds);
ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds);
ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs);
ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs);
ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts);
ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts);
ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts);
return 0;
}
static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr)
{
struct ncsi_rsp_gnpts_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_channel *nc;
struct ncsi_channel_stats *ncs;
/* Find the channel */
rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
NULL, &nc);
if (!nc)
return -ENODEV;
/* Update HNC's statistics */
ncs = &nc->stats;
ncs->pt_tx_pkts = ntohl(rsp->tx_pkts);
ncs->pt_tx_dropped = ntohl(rsp->tx_dropped);
ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err);
ncs->pt_tx_us_err = ntohl(rsp->tx_us_err);
ncs->pt_rx_pkts = ntohl(rsp->rx_pkts);
ncs->pt_rx_dropped = ntohl(rsp->rx_dropped);
ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err);
ncs->pt_rx_us_err = ntohl(rsp->rx_us_err);
ncs->pt_rx_os_err = ntohl(rsp->rx_os_err);
return 0;
}
static int ncsi_rsp_handler_gps(struct ncsi_request *nr)
{
struct ncsi_rsp_gps_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_package *np;
/* Find the package */
rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(nr->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
&np, NULL);
if (!np)
return -ENODEV;
return 0;
}
static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr)
{
struct ncsi_rsp_gpuuid_pkt *rsp;
struct ncsi_dev_priv *ndp = nr->ndp;
struct ncsi_package *np;
/* Find the package */
rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(nr->rsp);
ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
&np, NULL);
if (!np)
return -ENODEV;
memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid));
return 0;
}
static struct ncsi_rsp_handler {
unsigned char type;
int payload;
int (*handler)(struct ncsi_request *nr);
} ncsi_rsp_handlers[] = {
{ NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis },
{ NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp },
{ NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp },
{ NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec },
{ NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc },
{ NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc },
{ NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt },
{ NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt },
{ NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae },
{ NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl },
{ NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls },
{ NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf },
{ NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev },
{ NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv },
{ NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma },
{ NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf },
{ NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf },
{ NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf },
{ NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf },
{ NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc },
{ NCSI_PKT_RSP_GVI, 40, ncsi_rsp_handler_gvi },
{ NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc },
{ NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp },
{ NCSI_PKT_RSP_GCPS, 172, ncsi_rsp_handler_gcps },
{ NCSI_PKT_RSP_GNS, 172, ncsi_rsp_handler_gns },
{ NCSI_PKT_RSP_GNPTS, 172, ncsi_rsp_handler_gnpts },
{ NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps },
{ NCSI_PKT_RSP_OEM, 0, NULL },
{ NCSI_PKT_RSP_PLDM, 0, NULL },
{ NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid }
};
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_request *nr;
struct ncsi_pkt_hdr *hdr;
unsigned long flags;
int payload, i, 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 is 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 */
for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) {
if (ncsi_rsp_handlers[i].type == hdr->type) {
if (ncsi_rsp_handlers[i].handler)
nrh = &ncsi_rsp_handlers[i];
else
nrh = NULL;
break;
}
}
if (!nrh) {
netdev_err(nd->dev, "Received unrecognized packet (0x%x)\n",
hdr->type);
return -ENOENT;
}
/* Associate with the request */
spin_lock_irqsave(&ndp->lock, flags);
nr = &ndp->requests[hdr->id];
if (!nr->used) {
spin_unlock_irqrestore(&ndp->lock, flags);
return -ENODEV;
}
nr->rsp = skb;
if (!nr->enabled) {
spin_unlock_irqrestore(&ndp->lock, flags);
ret = -ENOENT;
goto out;
}
/* Validate the packet */
spin_unlock_irqrestore(&ndp->lock, flags);
payload = nrh->payload;
if (payload < 0)
payload = ntohs(hdr->length);
ret = ncsi_validate_rsp_pkt(nr, payload);
if (ret) {
netdev_warn(ndp->ndev.dev,
"NCSI: 'bad' packet ignored for type 0x%x\n",
hdr->type);
goto out;
}
/* Process the packet */
ret = nrh->handler(nr);
if (ret)
netdev_err(ndp->ndev.dev,
"NCSI: Handler for packet type 0x%x returned %d\n",
hdr->type, ret);
out:
ncsi_free_request(nr);
return ret;
}
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