diff options
Diffstat (limited to 'qemu/roms/ipxe/src/net/eth_slow.c')
| -rw-r--r-- | qemu/roms/ipxe/src/net/eth_slow.c | 278 |
1 files changed, 0 insertions, 278 deletions
diff --git a/qemu/roms/ipxe/src/net/eth_slow.c b/qemu/roms/ipxe/src/net/eth_slow.c deleted file mode 100644 index 049c26cb3..000000000 --- a/qemu/roms/ipxe/src/net/eth_slow.c +++ /dev/null @@ -1,278 +0,0 @@ -/* - * Copyright (C) 2010 Michael Brown <mbrown@fensystems.co.uk>. - * - * 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 any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - * You can also choose to distribute this program under the terms of - * the Unmodified Binary Distribution Licence (as given in the file - * COPYING.UBDL), provided that you have satisfied its requirements. - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -#include <stdlib.h> -#include <string.h> -#include <byteswap.h> -#include <errno.h> -#include <ipxe/iobuf.h> -#include <ipxe/netdevice.h> -#include <ipxe/if_ether.h> -#include <ipxe/ethernet.h> -#include <ipxe/eth_slow.h> - -/** @file - * - * Ethernet slow protocols - * - * We implement a very simple passive LACP entity, that pretends that - * each port is the only port on an individual system. We avoid the - * need for timeout logic (and retaining local state about our - * partner) by requesting the same timeout period (1s or 30s) as our - * partner requests, and then simply responding to every packet the - * partner sends us. - */ - -struct net_protocol eth_slow_protocol __net_protocol; - -/** Slow protocols multicast address */ -static const uint8_t eth_slow_address[ETH_ALEN] = - { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; - -/** - * Name LACP TLV type - * - * @v type LACP TLV type - * @ret name Name of LACP TLV type - */ -static inline __attribute__ (( always_inline )) const char * -eth_slow_lacp_tlv_name ( uint8_t type ) { - switch ( type ) { - case ETH_SLOW_TLV_TERMINATOR: return "terminator"; - case ETH_SLOW_TLV_LACP_ACTOR: return "actor"; - case ETH_SLOW_TLV_LACP_PARTNER: return "partner"; - case ETH_SLOW_TLV_LACP_COLLECTOR: return "collector"; - default: return "<invalid>"; - } -} - -/** - * Name marker TLV type - * - * @v type Marker TLV type - * @ret name Name of marker TLV type - */ -static inline __attribute__ (( always_inline )) const char * -eth_slow_marker_tlv_name ( uint8_t type ) { - switch ( type ) { - case ETH_SLOW_TLV_TERMINATOR: return "terminator"; - case ETH_SLOW_TLV_MARKER_REQUEST: return "request"; - case ETH_SLOW_TLV_MARKER_RESPONSE: return "response"; - default: return "<invalid>"; - } -} - -/** - * Name LACP state - * - * @v state LACP state - * @ret name LACP state name - */ -static const char * eth_slow_lacp_state_name ( uint8_t state ) { - static char state_chars[] = "AFGSRTLX"; - unsigned int i; - - for ( i = 0 ; i < 8 ; i++ ) { - state_chars[i] |= 0x20; - if ( state & ( 1 << i ) ) - state_chars[i] &= ~0x20; - } - return state_chars; -} - -/** - * Dump LACP packet - * - * @v iobuf I/O buffer - * @v netdev Network device - * @v label "RX" or "TX" - */ -static void eth_slow_lacp_dump ( struct io_buffer *iobuf, - struct net_device *netdev, - const char *label ) { - union eth_slow_packet *eth_slow = iobuf->data; - struct eth_slow_lacp *lacp = ð_slow->lacp; - - DBGC ( netdev, - "SLOW %s %s LACP actor (%04x,%s,%04x,%02x,%04x) [%s]\n", - netdev->name, label, ntohs ( lacp->actor.system_priority ), - eth_ntoa ( lacp->actor.system ), - ntohs ( lacp->actor.key ), - ntohs ( lacp->actor.port_priority ), - ntohs ( lacp->actor.port ), - eth_slow_lacp_state_name ( lacp->actor.state ) ); - DBGC ( netdev, - "SLOW %s %s LACP partner (%04x,%s,%04x,%02x,%04x) [%s]\n", - netdev->name, label, ntohs ( lacp->partner.system_priority ), - eth_ntoa ( lacp->partner.system ), - ntohs ( lacp->partner.key ), - ntohs ( lacp->partner.port_priority ), - ntohs ( lacp->partner.port ), - eth_slow_lacp_state_name ( lacp->partner.state ) ); - DBGC ( netdev, "SLOW %s %s LACP collector %04x (%d us)\n", - netdev->name, label, ntohs ( lacp->collector.max_delay ), - ( ntohs ( lacp->collector.max_delay ) * 10 ) ); - DBGC2_HDA ( netdev, 0, iobuf->data, iob_len ( iobuf ) ); -} - -/** - * Process incoming LACP packet - * - * @v iobuf I/O buffer - * @v netdev Network device - * @ret rc Return status code - */ -static int eth_slow_lacp_rx ( struct io_buffer *iobuf, - struct net_device *netdev ) { - union eth_slow_packet *eth_slow = iobuf->data; - struct eth_slow_lacp *lacp = ð_slow->lacp; - - eth_slow_lacp_dump ( iobuf, netdev, "RX" ); - - /* Build response */ - memset ( lacp->reserved, 0, sizeof ( lacp->reserved ) ); - memset ( &lacp->terminator, 0, sizeof ( lacp->terminator ) ); - memset ( &lacp->collector, 0, sizeof ( lacp->collector ) ); - lacp->collector.tlv.type = ETH_SLOW_TLV_LACP_COLLECTOR; - lacp->collector.tlv.length = ETH_SLOW_TLV_LACP_COLLECTOR_LEN; - memcpy ( &lacp->partner, &lacp->actor, sizeof ( lacp->partner ) ); - lacp->partner.tlv.type = ETH_SLOW_TLV_LACP_PARTNER; - lacp->partner.tlv.length = ETH_SLOW_TLV_LACP_PARTNER_LEN; - memset ( &lacp->partner.reserved, 0, - sizeof ( lacp->partner.reserved ) ); - memset ( &lacp->actor, 0, sizeof ( lacp->actor ) ); - lacp->actor.tlv.type = ETH_SLOW_TLV_LACP_ACTOR; - lacp->actor.tlv.length = ETH_SLOW_TLV_LACP_ACTOR_LEN; - lacp->actor.system_priority = htons ( LACP_SYSTEM_PRIORITY_MAX ); - memcpy ( lacp->actor.system, netdev->ll_addr, - sizeof ( lacp->actor.system ) ); - lacp->actor.key = htons ( 1 ); - lacp->actor.port_priority = htons ( LACP_PORT_PRIORITY_MAX ); - lacp->actor.port = htons ( 1 ); - lacp->actor.state = ( LACP_STATE_AGGREGATABLE | - LACP_STATE_IN_SYNC | - LACP_STATE_COLLECTING | - LACP_STATE_DISTRIBUTING | - ( lacp->partner.state & LACP_STATE_FAST ) ); - lacp->header.version = ETH_SLOW_LACP_VERSION; - - /* Send response */ - eth_slow_lacp_dump ( iobuf, netdev, "TX" ); - return net_tx ( iobuf, netdev, ð_slow_protocol, eth_slow_address, - netdev->ll_addr ); -} - -/** - * Dump marker packet - * - * @v iobuf I/O buffer - * @v netdev Network device - * @v label "RX" or "TX" - */ -static void eth_slow_marker_dump ( struct io_buffer *iobuf, - struct net_device *netdev, - const char *label ) { - union eth_slow_packet *eth_slow = iobuf->data; - struct eth_slow_marker *marker = ð_slow->marker; - - DBGC ( netdev, "SLOW %s %s marker %s port %04x system %s xact %08x\n", - netdev->name, label, - eth_slow_marker_tlv_name ( marker->marker.tlv.type ), - ntohs ( marker->marker.port ), - eth_ntoa ( marker->marker.system ), - ntohl ( marker->marker.xact ) ); - DBGC2_HDA ( netdev, 0, iobuf->data, iob_len ( iobuf ) ); -} - -/** - * Process incoming marker packet - * - * @v iobuf I/O buffer - * @v netdev Network device - * @ret rc Return status code - */ -static int eth_slow_marker_rx ( struct io_buffer *iobuf, - struct net_device *netdev ) { - union eth_slow_packet *eth_slow = iobuf->data; - struct eth_slow_marker *marker = ð_slow->marker; - - eth_slow_marker_dump ( iobuf, netdev, "RX" ); - - if ( marker->marker.tlv.type == ETH_SLOW_TLV_MARKER_REQUEST ) { - /* Send marker response */ - marker->marker.tlv.type = ETH_SLOW_TLV_MARKER_RESPONSE; - eth_slow_marker_dump ( iobuf, netdev, "TX" ); - return net_tx ( iobuf, netdev, ð_slow_protocol, - eth_slow_address, netdev->ll_addr ); - } else { - /* Discard all other marker packets */ - free_iob ( iobuf ); - return -EINVAL; - } -} - -/** - * Process incoming slow packet - * - * @v iobuf I/O buffer - * @v netdev Network device - * @v ll_dest Link-layer destination address - * @v ll_source Link-layer source address - * @v flags Packet flags - * @ret rc Return status code - */ -static int eth_slow_rx ( struct io_buffer *iobuf, - struct net_device *netdev, - const void *ll_dest __unused, - const void *ll_source __unused, - unsigned int flags __unused ) { - union eth_slow_packet *eth_slow = iobuf->data; - - /* Sanity checks */ - if ( iob_len ( iobuf ) < sizeof ( *eth_slow ) ) { - free_iob ( iobuf ); - return -EINVAL; - } - - /* Handle according to subtype */ - switch ( eth_slow->header.subtype ) { - case ETH_SLOW_SUBTYPE_LACP: - return eth_slow_lacp_rx ( iobuf, netdev ); - case ETH_SLOW_SUBTYPE_MARKER: - return eth_slow_marker_rx ( iobuf, netdev ); - default: - DBGC ( netdev, "SLOW %s RX unknown subtype %02x\n", - netdev->name, eth_slow->header.subtype ); - free_iob ( iobuf ); - return -EINVAL; - } -} - -/** Slow protocol */ -struct net_protocol eth_slow_protocol __net_protocol = { - .name = "Slow", - .net_proto = htons ( ETH_P_SLOW ), - .rx = eth_slow_rx, -}; |