This restrict ARP handling to MAC and IP addresses but in practice we need
only this case anyway and other cases are very rar if exist at all. It makes
code much simpler and less error-prone.
Using the http module to download config files, produces memory errors,
after the config file is downloaded.
The error was traced to the tcp stack in grub-core/net/tcp.c. The wrong
netbuff pointer was being freed in the clean up loop.
Changing the code to free the correct netbuff pointer removes the runtime
error.
Closes 42765.
Many routers have long router advertisment interval configured by
default. The Neighbor Discovery protocol (RFC4861) has defined default
MaxRtrAdvInterval value as 600 seconds and
MinRtrAdvInterval as 0.33*MaxRtrAdvInterval. This makes
net_ipv6_autoconf fails more often than not as currently it passively
listens the RA message to perfom address autoconfiguration.
This patch tries to send router solicitation to overcome the problem of
long RA interval.
v2:
use cpu_to_be macro for network byte order conversion
add missing error handling
The structure size used in grub_netbuff_pull to get the pointer to
option header is apparently wrong, which leads to subsequent range check
failed and therefore not responding to any neighbor solicit message in my
testing.
It enables net boot even when there is no bootp/dhcp server.
* grub-core/net/drivers/ieee1275/ofnet.c: Add grub_ieee1275_parse_bootpath and
call it at grub_ieee1275_net_config_real.
* grub-core/kern/ieee1275/init.c: Add bootpath to grub_ieee1275_net_config.
* include/grub/ieee1275/ieee1275.h: Likewise.
In net/net.c there is a while (1) that only exits if there is a stop
condition and more then 10 packages or if there is no package received.
If GRUB is idle and enter in this loop, the only condition to leave is
if it doesn't have incoming packages. In a network with heavy traffic
this never happens.
Adding multiple questions on a single DNS query is not supportted by
most DNS servers. This patch issues two separate DNS queries
sequentially for ipv4 and then for ipv6.
Fixes: https://savannah.gnu.org/bugs/?39710
* grub-core/net/bootp.c (parse_dhcp_vendor): Add DNS option.
* grub-core/net/dns.c (grub_dns_qtype_id): New enum.
* (grub_net_dns_lookup): Now using separated dns packages.
* (grub_cmd_nslookup): Add error condition.
* (grub_cmd_list_dns): Print DNS option.
* (grub_cmd_add_dns): Add four parameters: --only-ipv4,
* --only-ipv6, --prefer-ipv4, and --prefer-ipv6.
* include/grub/net.h (grub_dns_option_t): New enum.
* (grub_net_network_level_address): option added.
Also-by: Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
Signed-off-by: Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
strncpy.
* grub-core/fs/jfs.c (grub_jfs_lookup_symlink): Likewise.
* grub-core/kern/misc.c (grub_strncpy): Move from here ...
* include/grub/misc.h (grub_strncpy): ... to here. Make inline.
* grub-core/net/net.c (grub_net_addr_to_str): Use COMPILE_TIME_ASSERT
+ strcpy rather than strncpy.
* Makefile.util.def (grub-mount): Add LIBGEOM to ldadd.
* grub-core/net/drivers/emu/emunet.c: Only include Linux-specific
headers on Linux.
(GRUB_MOD_INIT): Return immediately on non-Linux platforms; this
implementation is currently Linux-specific.
* util/getroot.c (exec_pipe): Define only on Linux or when either
libzfs or libnvpair is unavailable.
(find_root_devices_from_poolname): Remove unused path variable.
* grub-core/net/http.c (parse_line): Handle response 206.
(http_receive): Stall if too many packets are in the queue.
(http_establish): Fix range header.
(http_seek): Fix double free.
(http_close): Likewise.
(http_packets_pulled): New function.
(grub_http_protocol): Set http_seek
* grub-core/net/tcp.c (grub_net_tcp_socket): New field `i_stall'.
(ack_real): Set window depending on i_stall.
(grub_net_send_tcp_packet): Likewise.
(grub_net_tcp_stall): New function.
(grub_net_tcp_unstall): Likewise.
* include/grub/net/tcp.h (grub_net_tcp_stall): New proto.
(grub_net_tcp_unstall): Likewise.
* grub-core/net/net.c (receive_packets): Decrease the stop to 10
packets but stop only if stop condition is satisfied.
(grub_net_fs_read_real): Call packets_pulled after real read. Use
`stall' instead of `eof' as stop condition.
* grub-core/net/http.c (parse_line): Set `stall' on EOF.
(http_err): Likewise.
* grub-core/net/tftp.c (ack): Replace the first argument with data
instead of socket.
(tftp_receive): Stall if too many packets are in wait queue.
(tftp_packets_pulled): New function.
(grub_tftp_protocol): Set packets_pulled.
* include/grub/net.h (grub_net_packets): New field count.
(grub_net_put_packet): Increment count.
(grub_net_remove_packet): Likewise.
(grub_net_app_protocol): New field `packets_pulled'.
(grub_net): New field `stall'.
* grub-core/net/bootp.c (parse_dhcp_vendor): Parse mask.
(grub_net_configure_by_dhcp_ack): Use mask and grub_net_add_ipv4_local.
* grub-core/net/net.c (grub_net_add_addr): Split creating local route
into ...
(grub_net_add_ipv4_local): ... this.
(grub_cmd_addaddr): Use grub_net_add_ipv4_local.
* include/grub/net.h (GRUB_NET_BOOTP_NETMASK): New enum value.
(grub_net_add_ipv4_local): New proto.
* include/grub/ieee1275/ieee1275.h (grub_ieee1275_flag): New enum values
GRUB_IEEE1275_FLAG_NO_OFNET_SUFFIX and
GRUB_IEEE1275_FLAG_VIRT_TO_REAL_BROKEN.
* grub-core/net/drivers/efi/efinet.c (grub_efinet_findcards): Use
txbufsize.
* grub-core/kern/ieee1275/cmain.c (grub_ieee1275_find_options): Use
compatible property to check for macs. Set
GRUB_IEEE1275_FLAG_NO_OFNET_SUFFIX and
GRUB_IEEE1275_FLAG_VIRT_TO_REAL_BROKEN on macs.
* grub-core/net/drivers/ieee1275/ofnet.c (card_open): Don't add suffix
if GRUB_IEEE1275_FLAG_NO_OFNET_SUFFIX is set.
(send_card_buffer): Use txbuf.
(grub_ofnet_findcards): Allocate txbuf. Simplify code flow and move
nested function out of the parent while on it.
* include/grub/net.h (grub_net_poll_cards): New argument stop_condition.
All users updated.
* grub-core/net/arp.c (have_pending): New var.
(pending_req): Likewise.
(grub_net_arp_send_request): Fill pending_req and use have_pending as
stop indicator.
(grub_net_arp_receive): Set have_pending.
* grub-core/net/dns.c (recv_data): New field stop.
(recv_hook): Set stop.
(grub_net_dns_lookup): Init stop and use as stop condition.
* grub-core/net/http.c (http_establish): Use headers_recv as stop
condition.
* grub-core/net/net.c (grub_net_poll_cards): New argument
stop_condition. Stop when it goes true.
* grub-core/net/tcp.c (grub_net_tcp_open): Use `established' as stop
indicator.
* grub-core/net/tftp.c (tftp_open): Use `have_oack' as stop indicator.
* include/grub/net.h (grub_net_card_driver): Allow driver to modify
card. All users updated.
(grub_net_card): New members txbuf, rcvbuf, rcvbufsize and txbusy.
* grub-core/net/drivers/efi/efinet.c (send_card_buffer): Reuse buffer.
(get_card_packet): Likewise.
(grub_efinet_findcards): Init new fields.
with DMA.
* grub-core/commands/boot.c (grub_loader_noreturn): Rename to ...
(grub_loader_flags): ... this. All users updated.
(grub_loader_boot): Check for GRUB_LOADER_FLAG_NORETURN.
* grub-core/loader/i386/pc/pxechainloader.c (grub_cmd_pxechain): Mark
loader as GRUB_LOADER_FLAG_PXE_NOT_UNLOAD.
* grub-core/net/drivers/i386/pc/pxe.c (grub_pxe_shutdown): New
function.
(grub_pxe_restore): Likewise.
(fini_hnd): New var.
(GRUB_MOD_INIT): Register shutdown hook.
(GRUB_MOD_FINI): Shutdown and unregister shutdown hook.
* include/grub/loader.h (GRUB_LOADER_FLAG_NORETURN): New const.
(GRUB_LOADER_FLAG_PXE_NOT_UNLOAD): Likewise.
(grub_loader_set): Rename second argument to flags.
* grub-core/loader/i386/pc/pxechainloader.c: New file.
* grub-core/net/drivers/i386/pc/pxe.c (grub_pxe_get_cached): New
function.
(grub_pc_net_config_real): Use grub_pxe_get_cached.
* include/grub/i386/pc/pxe.h (grub_pxe_get_cached): New proto.
compact and more efficient code.
* grub-core/kern/list.c (grub_list_push): Moved from here ...
* include/grub/list.h (grub_list_push): ... to here. Set prev.
(grub_list_remove): Moved from here ...
* include/grub/list.h (grub_list_remove): ... here. Use and set prev.
(grub_prio_list_insert): Set prev.
* include/grub/list.h (grub_list): Add prev. All users updated.
