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slirp: add a fake NC-SI backend 

NC-SI (Network Controller Sideband Interface) enables a BMC to manage
a set of NICs on a system. This model takes the simplest approach and
reverses the NC-SI packets to pretend a NIC is present and exercise
the Linux driver.

The NCSI header file <ncsi-pkt.h> comes from mainline Linux and was
untabified.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Cédric Le Goater 2017-04-14 10:35:03 +02:00 committed by Jason Wang
parent ea337c6549
commit 47bb83cad4
6 changed files with 558 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/net/eth.h
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@ -209,6 +209,7 @@ struct tcp_hdr {
#define ETH_P_IPV6 (0x86dd)
#define ETH_P_VLAN (0x8100)
#define ETH_P_DVLAN (0x88a8)
#define ETH_P_NCSI (0x88f8)
#define ETH_P_UNKNOWN (0xffff)
#define VLAN_VID_MASK 0x0fff
#define IP_HEADER_VERSION_4 (4)

2
slirp/Makefile.objs
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@ -2,4 +2,4 @@ common-obj-y = cksum.o if.o ip_icmp.o ip6_icmp.o ip6_input.o ip6_output.o \
ip_input.o ip_output.o dnssearch.o dhcpv6.o
common-obj-y += slirp.o mbuf.o misc.o sbuf.o socket.o tcp_input.o tcp_output.o
common-obj-y += tcp_subr.o tcp_timer.o udp.o udp6.o bootp.o tftp.o arp_table.o \
ndp_table.o
ndp_table.o ncsi.o

419
slirp/ncsi-pkt.h Normal file
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@ -0,0 +1,419 @@
/*
* 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.
*/
#ifndef NCSI_PKT_H
#define NCSI_PKT_H
/* from linux/net/ncsi/ncsi-pkt.h */
#define __be32 uint32_t
#define __be16 uint16_t
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 packet */
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];
};
/* 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 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 */
};
/* Get package status */
struct ncsi_rsp_gps_pkt {
struct ncsi_rsp_pkt_hdr rsp; /* Response header */
__be32 status; /* Hardware arbitration status */
__be32 checksum;
};
/* Get package UUID */
struct ncsi_rsp_gpuuid_pkt {
struct ncsi_rsp_pkt_hdr rsp; /* Response header */
unsigned char uuid[16]; /* UUID */
__be32 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_GPS 0x1b /* Get package status */
#define NCSI_PKT_CMD_OEM 0x50 /* OEM */
#define NCSI_PKT_CMD_PLDM 0x51 /* PLDM request over NCSI over RBT */
#define NCSI_PKT_CMD_GPUUID 0x52 /* Get package UUID */
/* 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_GPS (NCSI_PKT_CMD_GPS + 0x80)
#define NCSI_PKT_RSP_OEM (NCSI_PKT_CMD_OEM + 0x80)
#define NCSI_PKT_RSP_PLDM (NCSI_PKT_CMD_PLDM + 0x80)
#define NCSI_PKT_RSP_GPUUID (NCSI_PKT_CMD_GPUUID + 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 */
/* NCSI AEN packet type */
#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 */
#endif /* NCSI_PKT_H */

130
slirp/ncsi.c Normal file
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@ -0,0 +1,130 @@
/*
* NC-SI (Network Controller Sideband Interface) "echo" model
*
* Copyright (C) 2016 IBM Corp.
*
* This code is licensed under the GPL version 2 or later. See the
* COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "slirp.h"
#include "ncsi-pkt.h"
/* Get Capabilities */
static int ncsi_rsp_handler_gc(struct ncsi_rsp_pkt_hdr *rnh)
{
struct ncsi_rsp_gc_pkt *rsp = (struct ncsi_rsp_gc_pkt *) rnh;
rsp->cap = htonl(~0);
rsp->bc_cap = htonl(~0);
rsp->mc_cap = htonl(~0);
rsp->buf_cap = htonl(~0);
rsp->aen_cap = htonl(~0);
rsp->vlan_mode = 0xff;
rsp->uc_cnt = 2;
return 0;
}
/* Get Link status */
static int ncsi_rsp_handler_gls(struct ncsi_rsp_pkt_hdr *rnh)
{
struct ncsi_rsp_gls_pkt *rsp = (struct ncsi_rsp_gls_pkt *) rnh;
rsp->status = htonl(0x1);
return 0;
}
static const struct ncsi_rsp_handler {
unsigned char type;
int payload;
int (*handler)(struct ncsi_rsp_pkt_hdr *rnh);
} ncsi_rsp_handlers[] = {
{ NCSI_PKT_RSP_CIS, 4, NULL },
{ NCSI_PKT_RSP_SP, 4, NULL },
{ NCSI_PKT_RSP_DP, 4, NULL },
{ NCSI_PKT_RSP_EC, 4, NULL },
{ NCSI_PKT_RSP_DC, 4, NULL },
{ NCSI_PKT_RSP_RC, 4, NULL },
{ NCSI_PKT_RSP_ECNT, 4, NULL },
{ NCSI_PKT_RSP_DCNT, 4, NULL },
{ NCSI_PKT_RSP_AE, 4, NULL },
{ NCSI_PKT_RSP_SL, 4, NULL },
{ NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls },
{ NCSI_PKT_RSP_SVF, 4, NULL },
{ NCSI_PKT_RSP_EV, 4, NULL },
{ NCSI_PKT_RSP_DV, 4, NULL },
{ NCSI_PKT_RSP_SMA, 4, NULL },
{ NCSI_PKT_RSP_EBF, 4, NULL },
{ NCSI_PKT_RSP_DBF, 4, NULL },
{ NCSI_PKT_RSP_EGMF, 4, NULL },
{ NCSI_PKT_RSP_DGMF, 4, NULL },
{ NCSI_PKT_RSP_SNFC, 4, NULL },
{ NCSI_PKT_RSP_GVI, 36, NULL },
{ NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc },
{ NCSI_PKT_RSP_GP, -1, NULL },
{ NCSI_PKT_RSP_GCPS, 172, NULL },
{ NCSI_PKT_RSP_GNS, 172, NULL },
{ NCSI_PKT_RSP_GNPTS, 172, NULL },
{ NCSI_PKT_RSP_GPS, 8, NULL },
{ NCSI_PKT_RSP_OEM, 0, NULL },
{ NCSI_PKT_RSP_PLDM, 0, NULL },
{ NCSI_PKT_RSP_GPUUID, 20, NULL }
};
/*
* packet format : ncsi header + payload + checksum
*/
#define NCSI_MAX_PAYLOAD 172
#define NCSI_MAX_LEN (sizeof(struct ncsi_pkt_hdr) + NCSI_MAX_PAYLOAD + 4)
void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len)
{
struct ncsi_pkt_hdr *nh = (struct ncsi_pkt_hdr *)(pkt + ETH_HLEN);
uint8_t ncsi_reply[ETH_HLEN + NCSI_MAX_LEN];
struct ethhdr *reh = (struct ethhdr *)ncsi_reply;
struct ncsi_rsp_pkt_hdr *rnh = (struct ncsi_rsp_pkt_hdr *)
(ncsi_reply + ETH_HLEN);
const struct ncsi_rsp_handler *handler = NULL;
int i;
memset(ncsi_reply, 0, sizeof(ncsi_reply));
memset(reh->h_dest, 0xff, ETH_ALEN);
memset(reh->h_source, 0xff, ETH_ALEN);
reh->h_proto = htons(ETH_P_NCSI);
for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) {
if (ncsi_rsp_handlers[i].type == nh->type + 0x80) {
handler = &ncsi_rsp_handlers[i];
break;
}
}
rnh->common.mc_id = nh->mc_id;
rnh->common.revision = NCSI_PKT_REVISION;
rnh->common.id = nh->id;
rnh->common.type = nh->type + 0x80;
rnh->common.channel = nh->channel;
if (handler) {
rnh->common.length = htons(handler->payload);
rnh->code = htons(NCSI_PKT_RSP_C_COMPLETED);
rnh->reason = htons(NCSI_PKT_RSP_R_NO_ERROR);
if (handler->handler) {
/* TODO: handle errors */
handler->handler(rnh);
}
} else {
rnh->common.length = 0;
rnh->code = htons(NCSI_PKT_RSP_C_UNAVAILABLE);
rnh->reason = htons(NCSI_PKT_RSP_R_UNKNOWN);
}
/* TODO: add a checksum at the end of the frame but the specs
* allows it to be zero */
slirp_output(slirp->opaque, ncsi_reply, ETH_HLEN + sizeof(*nh) +
(handler ? handler->payload : 0) + 4);
}

4
slirp/slirp.c
View File

@ -870,6 +870,10 @@ void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len)
}
break;
case ETH_P_NCSI:
ncsi_input(slirp, pkt, pkt_len);
break;
default:
break;
}

3
slirp/slirp.h
View File

@ -231,6 +231,9 @@ extern Slirp *slirp_instance;
void if_start(Slirp *);
/* ncsi.c */
void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len);
#ifndef _WIN32
#include <netdb.h>
#endif