diff options
Diffstat (limited to 'qemu/roms/ipxe/src/net/icmp.c')
| -rw-r--r-- | qemu/roms/ipxe/src/net/icmp.c | 230 |
1 files changed, 0 insertions, 230 deletions
diff --git a/qemu/roms/ipxe/src/net/icmp.c b/qemu/roms/ipxe/src/net/icmp.c deleted file mode 100644 index 5371277e4..000000000 --- a/qemu/roms/ipxe/src/net/icmp.c +++ /dev/null @@ -1,230 +0,0 @@ -/* - * Copyright (C) 2013 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 <string.h> -#include <byteswap.h> -#include <errno.h> -#include <ipxe/iobuf.h> -#include <ipxe/in.h> -#include <ipxe/tcpip.h> -#include <ipxe/ping.h> -#include <ipxe/crc32.h> -#include <ipxe/icmp.h> - -/** @file - * - * ICMP protocol - * - */ - -/** - * Identify ICMP echo protocol - * - * @v st_family Address family - * @ret echo_protocol ICMP echo protocol, or NULL - */ -static struct icmp_echo_protocol * icmp_echo_protocol ( sa_family_t family ) { - struct icmp_echo_protocol *echo_protocol; - - for_each_table_entry ( echo_protocol, ICMP_ECHO_PROTOCOLS ) { - if ( echo_protocol->family == family ) - return echo_protocol; - } - return NULL; -} - -/** - * - * Determine debugging colour for ICMP debug messages - * - * @v st_peer Peer address - * @ret col Debugging colour (for DBGC()) - */ -static uint32_t icmpcol ( struct sockaddr_tcpip *st_peer ) { - - return crc32_le ( 0, st_peer, sizeof ( *st_peer ) ); -} - -/** - * Transmit ICMP echo packet - * - * @v iobuf I/O buffer - * @v st_dest Destination socket address - * @v echo_protocol ICMP echo protocol - * @ret rc Return status code - */ -static int icmp_tx_echo ( struct io_buffer *iobuf, - struct sockaddr_tcpip *st_dest, - struct icmp_echo_protocol *echo_protocol ) { - struct icmp_echo *echo = iobuf->data; - int rc; - - /* Set ICMP type and (re)calculate checksum */ - echo->icmp.chksum = 0; - echo->icmp.chksum = tcpip_chksum ( echo, iob_len ( iobuf ) ); - - /* Transmit packet */ - if ( ( rc = tcpip_tx ( iobuf, echo_protocol->tcpip_protocol, NULL, - st_dest, NULL, - ( echo_protocol->net_checksum ? - &echo->icmp.chksum : NULL ) ) ) != 0 ) - return rc; - - return 0; -} - -/** - * Transmit ICMP echo request - * - * @v iobuf I/O buffer - * @v st_dest Destination socket address - * @ret rc Return status code - */ -int icmp_tx_echo_request ( struct io_buffer *iobuf, - struct sockaddr_tcpip *st_dest ) { - struct icmp_echo *echo = iobuf->data; - struct icmp_echo_protocol *echo_protocol; - int rc; - - /* Identify ICMP echo protocol */ - echo_protocol = icmp_echo_protocol ( st_dest->st_family ); - if ( ! echo_protocol ) { - DBGC ( icmpcol ( st_dest ), "ICMP TX echo request unknown " - "address family %d\n", st_dest->st_family ); - free_iob ( iobuf ); - return -ENOTSUP; - } - - /* Set type */ - echo->icmp.type = echo_protocol->request; - - /* Transmit request */ - DBGC ( icmpcol ( st_dest ), "ICMP TX echo request id %04x seq %04x\n", - ntohs ( echo->ident ), ntohs ( echo->sequence ) ); - if ( ( rc = icmp_tx_echo ( iobuf, st_dest, echo_protocol ) ) != 0 ) - return rc; - - return 0; -} - -/** - * Transmit ICMP echo reply - * - * @v iobuf I/O buffer - * @v st_dest Destination socket address - * @ret rc Return status code - */ -static int icmp_tx_echo_reply ( struct io_buffer *iobuf, - struct sockaddr_tcpip *st_dest, - struct icmp_echo_protocol *echo_protocol ) { - struct icmp_echo *echo = iobuf->data; - int rc; - - /* Set type */ - echo->icmp.type = echo_protocol->reply; - - /* Transmit reply */ - DBGC ( icmpcol ( st_dest ), "ICMP TX echo reply id %04x seq %04x\n", - ntohs ( echo->ident ), ntohs ( echo->sequence ) ); - if ( ( rc = icmp_tx_echo ( iobuf, st_dest, echo_protocol ) ) != 0 ) - return rc; - - return 0; -} - -/** - * Process a received ICMP echo request - * - * @v iobuf I/O buffer - * @v st_src Source socket address - * @v echo_protocol ICMP echo protocol - * @ret rc Return status code - */ -int icmp_rx_echo_request ( struct io_buffer *iobuf, - struct sockaddr_tcpip *st_src, - struct icmp_echo_protocol *echo_protocol ) { - struct icmp_echo *echo = iobuf->data; - int rc; - - /* Sanity check */ - if ( iob_len ( iobuf ) < sizeof ( *echo ) ) { - DBGC ( icmpcol ( st_src ), "ICMP RX echo request too short at " - "%zd bytes (min %zd bytes)\n", - iob_len ( iobuf ), sizeof ( *echo ) ); - free_iob ( iobuf ); - return -EINVAL; - } - DBGC ( icmpcol ( st_src ), "ICMP RX echo request id %04x seq %04x\n", - ntohs ( echo->ident ), ntohs ( echo->sequence ) ); - - /* Transmit echo reply */ - if ( ( rc = icmp_tx_echo_reply ( iobuf, st_src, echo_protocol ) ) != 0 ) - return rc; - - return 0; -} - -/** - * Process a received ICMP echo request - * - * @v iobuf I/O buffer - * @v st_src Source socket address - * @ret rc Return status code - */ -int icmp_rx_echo_reply ( struct io_buffer *iobuf, - struct sockaddr_tcpip *st_src ) { - struct icmp_echo *echo = iobuf->data; - int rc; - - /* Sanity check */ - if ( iob_len ( iobuf ) < sizeof ( *echo ) ) { - DBGC ( icmpcol ( st_src ), "ICMP RX echo reply too short at " - "%zd bytes (min %zd bytes)\n", - iob_len ( iobuf ), sizeof ( *echo ) ); - free_iob ( iobuf ); - return -EINVAL; - } - DBGC ( icmpcol ( st_src ), "ICMP RX echo reply id %04x seq %04x\n", - ntohs ( echo->ident ), ntohs ( echo->sequence ) ); - - /* Deliver to ping protocol */ - if ( ( rc = ping_rx ( iobuf, st_src ) ) != 0 ) - return rc; - - return 0; -} - -/** - * Receive ping reply (when no ping protocol is present) - * - * @v iobuf I/O buffer - * @v st_src Source socket address - * @ret rc Return status code - */ -__weak int ping_rx ( struct io_buffer *iobuf, - struct sockaddr_tcpip *st_src __unused ) { - free_iob ( iobuf ); - return 0; -} |