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69f9aff2 |
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30-Oct-2023 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Switch to linux/sprintf.h The commit 39ced19b9e60 ("lib/vsprintf: split out sprintf() and friends") introduced a new header for the sprintf related functions which were previously exposed via linux/kernel.h. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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#
eb7da4f1 |
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21-Jan-2022 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Migrate to linux/container_of.h The commit d2a8ebbf8192 ("kernel.h: split out container_of() and typeof_member() macros") introduced a new header for the container_of related macros from (previously) linux/kernel.h. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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#
a2b7b148 |
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08-Aug-2021 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Drop NULL check before dropping references The check if a batman-adv related object is NULL or not is now directly in the batadv_*_put functions. It is not needed anymore to perform this check outside these function: The changes were generated using a coccinelle semantic patch: @@ expression E; @@ - if (likely(E != NULL)) ( batadv_backbone_gw_put | batadv_claim_put | batadv_dat_entry_put | batadv_gw_node_put | batadv_hardif_neigh_put | batadv_hardif_put | batadv_nc_node_put | batadv_nc_path_put | batadv_neigh_ifinfo_put | batadv_neigh_node_put | batadv_orig_ifinfo_put | batadv_orig_node_put | batadv_orig_node_vlan_put | batadv_softif_vlan_put | batadv_tp_vars_put | batadv_tt_global_entry_put | batadv_tt_local_entry_put | batadv_tt_orig_list_entry_put | batadv_tt_req_node_put | batadv_tvlv_container_put | batadv_tvlv_handler_put )(E); Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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e78783da |
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08-Aug-2021 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Check ptr for NULL before reducing its refcnt The commit b37a46683739 ("netdevice: add the case if dev is NULL") changed the way how the NULL check for net_devices have to be handled when trying to reduce its reference counter. Before this commit, it was the responsibility of the caller to check whether the object is NULL or not. But it was changed to behave more like kfree. Now the callee has to handle the NULL-case. The batman-adv code was scanned via cocinelle for similar places. These were changed to use the paradigm @@ identifier E, T, R, C; identifier put; @@ void put(struct T *E) { + if (!E) + return; kref_put(&E->C, R); } Functions which were used in other sources files were moved to the header to allow the compiler to inline the NULL check and the kref_put call. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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#
79a0bffb |
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08-Aug-2021 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Drop NULL check before dropping references The check if a batman-adv related object is NULL or not is now directly in the batadv_*_put functions. It is not needed anymore to perform this check outside these function: The changes were generated using a coccinelle semantic patch: @@ expression E; @@ - if (likely(E != NULL)) ( batadv_backbone_gw_put | batadv_claim_put | batadv_dat_entry_put | batadv_gw_node_put | batadv_hardif_neigh_put | batadv_hardif_put | batadv_nc_node_put | batadv_nc_path_put | batadv_neigh_ifinfo_put | batadv_neigh_node_put | batadv_orig_ifinfo_put | batadv_orig_node_put | batadv_orig_node_vlan_put | batadv_softif_vlan_put | batadv_tp_vars_put | batadv_tt_global_entry_put | batadv_tt_local_entry_put | batadv_tt_orig_list_entry_put | batadv_tt_req_node_put | batadv_tvlv_container_put | batadv_tvlv_handler_put )(E); Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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#
6340dcbd |
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08-Aug-2021 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Check ptr for NULL before reducing its refcnt The commit b37a46683739 ("netdevice: add the case if dev is NULL") changed the way how the NULL check for net_devices have to be handled when trying to reduce its reference counter. Before this commit, it was the responsibility of the caller to check whether the object is NULL or not. But it was changed to behave more like kfree. Now the callee has to handle the NULL-case. The batman-adv code was scanned via cocinelle for similar places. These were changed to use the paradigm @@ identifier E, T, R, C; identifier put; @@ void put(struct T *E) { + if (!E) + return; kref_put(&E->C, R); } Functions which were used in other sources files were moved to the header to allow the compiler to inline the NULL check and the kref_put call. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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1160dfa1 |
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05-Aug-2021 |
Yajun Deng <yajun.deng@linux.dev> |
net: Remove redundant if statements The 'if (dev)' statement already move into dev_{put , hold}, so remove redundant if statements. Signed-off-by: Yajun Deng <yajun.deng@linux.dev> Signed-off-by: David S. Miller <davem@davemloft.net>
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cfa55c6d |
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31-Dec-2020 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Drop publication years from copyright info The batman-adv source code was using the year of publication (to net-next) as "last" year for the copyright statement. The whole source code mentioned in the MAINTAINERS "BATMAN ADVANCED" section was handled as a single entity regarding the publishing year. This avoided having outdated (in sense of year information - not copyright holder) publishing information inside several files. But since the simple "update copyright year" commit (without other changes) in the file was not well received in the upstream kernel, the option to not have a copyright year (for initial and last publication) in the files are chosen instead. More detailed information about the years can still be retrieved from the SCM system. Signed-off-by: Sven Eckelmann <sven@narfation.org> Acked-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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aff6f5a6 |
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17-Aug-2020 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Drop deprecated debugfs support The debugfs support in batman-adv was marked as deprecated by the commit 00caf6a2b318 ("batman-adv: Mark debugfs functionality as deprecated") and scheduled for removal in 2021. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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303216e7 |
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22-Jul-2020 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Avoid uninitialized chaddr when handling DHCP The gateway client code can try to optimize the delivery of DHCP packets to avoid broadcasting them through the whole mesh. But also transmissions to the client can be optimized by looking up the destination via the chaddr of the DHCP packet. But the chaddr is currently only done when chaddr is fully inside the non-paged area of the skbuff. Otherwise it will not be initialized and the unoptimized path should have been taken. But the implementation didn't handle this correctly. It didn't retrieve the correct chaddr but still tried to perform the TT lookup with this uninitialized memory. Reported-by: syzbot+ab16e463b903f5a37036@syzkaller.appspotmail.com Fixes: 6c413b1c22a2 ("batman-adv: send every DHCP packet as bat-unicast") Signed-off-by: Sven Eckelmann <sven@narfation.org> Acked-by: Antonio Quartulli <a@unstable.cc> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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cf78bb0b |
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20-May-2020 |
Antonio Quartulli <a@unstable.cc> |
batman-adv: use rcu_replace_pointer() where appropriate In commit a63fc6b75cca ("rcu: Upgrade rcu_swap_protected() to rcu_replace_pointer()") a new helper macro named rcu_replace_pointer() was introduced to simplify code requiring to switch an rcu pointer to a new value while extracting the old one. Use rcu_replace_pointer() where appropriate to make code slimer. Signed-off-by: Antonio Quartulli <a@unstable.cc> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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68e039f9 |
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31-Dec-2019 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Update copyright years for 2020 Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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0fa4c30d |
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03-Mar-2019 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Make sysfs support optional The sysfs files will be marked as deprecated in the near future. They are already replaced by the batadv generic netlink family. Add an Kconfig option to disable the sysfs support for users who want to test their tools or want to safe some space. This setting should currently still be enabled by default to keep backward compatible with legacy tools. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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0d5f20c4 |
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03-Mar-2019 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Drop license boilerplate All files got a SPDX-License-Identifier with commit 7db7d9f369a4 ("batman-adv: Add SPDX license identifier above copyright header"). All the required information about the license conditions can be found in LICENSES/. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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e2d0d35b |
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23-Nov-2018 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Add gateway mesh genl configuration The mesh/soft-interface can optimize the handling of DHCP packets. Instead of flooding them through the whole mesh, it can be forwarded as unicast to a specific gateway server. The originator which injects the packets in the mesh has to select (based on sel_class thresholds) a responsible gateway server. This is done by switching this originator to the gw_mode client. The servers announce their forwarding bandwidth (download/upload) when the gw_mode server was selected. The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH commands allow to set/get the configuration of this feature using the attributes: * u8 BATADV_ATTR_GW_MODE (0 == off, 1 == client, 2 == server) * u32 BATADV_ATTR_GW_BANDWIDTH_DOWN (in 100 kbit/s steps) * u32 BATADV_ATTR_GW_BANDWIDTH_UP (in 100 kbit/s steps) * u32 BATADV_ATTR_GW_SEL_CLASS Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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7a79d717 |
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31-Dec-2018 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Update copyright years for 2019 Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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9264c85c |
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30-Oct-2018 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Add inconsistent gateway netlink dump detection The netlink dump functionality transfers a large number of entries from the kernel to userspace. It is rather likely that the transfer has to interrupted and later continued. During that time, it can happen that either new entries are added or removed. The userspace could than either receive some entries multiple times or miss entries. Commit 670dc2833d14 ("netlink: advertise incomplete dumps") introduced a mechanism to inform userspace about this problem. Userspace can then decide whether it is necessary or not to retry dumping the information again. The netlink dump functions have to be switched to exclusive locks to avoid changes while the current message is prepared. And an external generation sequence counter is introduced which tracks all modifications of the list. Reported-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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dff9bc42 |
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12-Aug-2018 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prevent duplicated gateway_node entry The function batadv_gw_node_add is responsible for adding new gw_node to the gateway_list. It is expecting that the caller already checked that there is not already an entry with the same key or not. But the lock for the list is only held when the list is really modified. This could lead to duplicated entries because another context could create an entry with the same key between the check and the list manipulation. The check and the manipulation of the list must therefore be in the same locked code section. Fixes: c6c8fea29769 ("net: Add batman-adv meshing protocol") Signed-off-by: Sven Eckelmann <sven@narfation.org> Acked-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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a752c0a4 |
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21-Mar-2018 |
Linus Lüssing <linus.luessing@c0d3.blue> |
batman-adv: fix packet loss for broadcasted DHCP packets to a server DHCP connectivity issues can currently occur if the following conditions are met: 1) A DHCP packet from a client to a server 2) This packet has a multicast destination 3) This destination has a matching entry in the translation table (FF:FF:FF:FF:FF:FF for IPv4, 33:33:00:01:00:02/33:33:00:01:00:03 for IPv6) 4) The orig-node determined by TT for the multicast destination does not match the orig-node determined by best-gateway-selection In this case the DHCP packet will be dropped. The "gateway-out-of-range" check is supposed to only be applied to unicasted DHCP packets to a specific DHCP server. In that case dropping the the unicasted frame forces the client to retry via a broadcasted one, but now directed to the new best gateway. A DHCP packet with broadcast/multicast destination is already ensured to always be delivered to the best gateway. Dropping a multicasted DHCP packet here will only prevent completing DHCP as there is no other fallback. So far, it seems the unicast check was implicitly performed by expecting the batadv_transtable_search() to return NULL for multicast destinations. However, a multicast address could have always ended up in the translation table and in fact is now common. To fix this potential loss of a DHCP client-to-server packet to a multicast address this patch adds an explicit multicast destination check to reliably bail out of the gateway-out-of-range check for such destinations. The issue and fix were tested in the following three node setup: - Line topology, A-B-C - A: gateway client, DHCP client - B: gateway server, hop-penalty increased: 30->60, DHCP server - C: gateway server, code modifications to announce FF:FF:FF:FF:FF:FF Without this patch, A would never transmit its DHCP Discover packet due to an always "out-of-range" condition. With this patch, a full DHCP handshake between A and B was possible again. Fixes: be7af5cf9cae ("batman-adv: refactoring gateway handling code") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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6b1aea8c |
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31-Dec-2017 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Update copyright years for 2018 Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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fec149f5 |
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21-Dec-2017 |
Sven Eckelmann <sven.eckelmann@openmesh.com> |
batman-adv: Convert packet.h to uapi header The header file is used by different userspace programs to inject packets or to decode sniffed packets. It should therefore be available to them as userspace header. Also other components in the kernel (like the flow dissector) require access to the packet definitions to be able to decode ETH_P_BATMAN ethernet packets. Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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ff15c27c |
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02-Dec-2017 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Add kernel-doc to externally visible functions According to the kernel-doc documentation, externally visible functions should be documented. This refers to all all non-static function which can (and will) be used by functions in other sources files. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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7e9a8c2c |
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02-Dec-2017 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Use parentheses in function kernel-doc The documentation describing kernel-doc comments for functions ("How to format kernel-doc comments") uses parentheses at the end of the function name. Using this format allows to use a consistent style when adding documentation to a function and when referencing this function in a different kernel-doc section. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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b92b94ac |
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19-Nov-2017 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: include gfp.h for GFP_* defines The linux/gfp.h provides the GFP_ATOMIC and GFP_KERNEL define. It should therefore be included instead of linux/fs.h. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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7db7d9f3 |
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19-Nov-2017 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Add SPDX license identifier above copyright header The "Linux kernel licensing rules" require that each file has a SPDX license identifier as first line (and sometimes as second line). The FSFE REUSE practices [1] would also require the same tags but have no restrictions on the placement in the source file. Using the "Linux kernel licensing rules" is therefore also fulfilling the FSFE REUSE practices requirements at the same time. [1] https://reuse.software/practices/ Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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825ffe1f |
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23-Aug-2017 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Remove unnecessary parentheses checkpatch introduced with commit 63b7c73ec86b ("checkpatch: add --strict check for ifs with unnecessary parentheses") an additional test which identifies some unnecessary parentheses. Remove these unnecessary parentheses to avoid the warnings and to unify the coding style slightly more. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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ac79cbb9 |
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31-Dec-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: update copyright years for 2017 Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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70ea5cee |
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26-Jul-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Use proper name for gateway list head The batman-adv codebase is using "list" for the list node (prev/next) and <list content descriptor>+"_list" for the head of a list. Not using this naming scheme can up in confusions when reading the code. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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422d2f77 |
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24-Jul-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Remove needless init of variables on stack Some variables are overwritten immediatelly in a functions. These don't have to be initialized to a specific value on the stack because the value will be overwritten before they will be used anywhere. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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dc1cbd14 |
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16-Jul-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Allow to disable debugfs support The files provided by batman-adv via debugfs are currently converted to netlink. Tools which are not yet converted to use the netlink interface may still rely on the old debugfs files. But systems which already upgraded their tools can save some space by disabling this feature. The default configuration of batman-adv on amd64 can reduce the size of the module by around 11% when this feature is disabled. $ size net/batman-adv/batman-adv.ko* text data bss dec hex filename 150507 10395 4160 165062 284c6 net/batman-adv/batman-adv.ko.y 137106 7099 2112 146317 23b8d net/batman-adv/batman-adv.ko.n Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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f665fa7e |
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15-Jul-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Place kref_get for gw_node near use It is hard to understand why the refcnt is increased when it isn't done near the actual place the new reference is used. So using kref_get right before the place which requires the reference and in the same function helps to avoid accidental problems caused by incorrect reference counting. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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55db2d59 |
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15-Jul-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Place kref_get for orig_node near use It is hard to understand why the refcnt is increased when it isn't done near the actual place the new reference is used. So using kref_get right before the place which requires the reference and in the same function helps to avoid accidental problems caused by incorrect reference counting. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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d7129daf |
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03-Jul-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: netlink: add gateway table queries Add BATADV_CMD_GET_GATEWAYS commands, using handlers bat_gw_dump in batadv_algo_ops. Will always return -EOPNOTSUPP for now, as no implementations exist yet. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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50164d8f |
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02-Jul-2016 |
Antonio Quartulli <a@unstable.cc> |
batman-adv: B.A.T.M.A.N. V - implement GW selection logic Since the GW selection logic has been made routing protocol specific it is now possible for B.A.T.M.A.N V to have its own mechanism by providing the API implementation. Implement the GW specific API in the B.A.T.M.A.N. V protocol in order to provide a working GW selection mechanism. Signed-off-by: Antonio Quartulli <a@unstable.cc> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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34d99cfe |
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02-Jul-2016 |
Antonio Quartulli <a@unstable.cc> |
batman-adv: make GW election code protocol specific Each routing protocol may have its own specific logic about gateway election which is potentially based on the metric being used. Create two GW specific API functions and move the current election logic in the B.A.T.M.A.N. IV specific code. Signed-off-by: Antonio Quartulli <a@unstable.cc> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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ba412080 |
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15-May-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Consolidate logging related functions There are several places in batman-adv which provide logging related functions. These should be grouped together in the log.* files to make them easier to find. Reported-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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3a24a63e |
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05-May-2016 |
Antonio Quartulli <a@unstable.cc> |
batman-adv: move GW mode and selection class to private data structure To reduce the field pollution in our main batadv_priv data structure we've already created some substructures so that we could group fields in a convenient manner. However gw_mode and gw_sel_class are still part of the main object. More both fields to the GW private substructure. Signed-off-by: Antonio Quartulli <a@unstable.cc> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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92d2b1a5 |
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25-May-2016 |
Antonio Quartulli <a@unstable.cc> |
batman-adv: statically print gateway table header To make it easier to search through the code it is better to print static strings directly instead of using format strings printing constants. This was addressed in a previous patch, but the Gateway table header was not updated accordingly. Signed-off-by: Antonio Quartulli <a@unstable.cc> Reviewed-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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c3ba37a7 |
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05-Mar-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Use kref_get for batadv_gw_node_add batadv_gw_node_add requires that the caller already has a valid reference for orig_node. It is therefore not possible that it has an reference counter of 0 and was still given to this function The kref_get function instead WARNs (with debug information) when the reference counter would still be 0. This makes a bug in batman-adv better visible because kref_get_unless_zero would have ignored this problem. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
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a08d497d |
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05-Mar-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Use kref_get for batadv_gw_select batadv_gw_select requires that the caller already has a valid reference for new_gw_node. It is therefore not possible that it has an reference counter of 0 and was still given to this function The kref_get function instead WARNs (with debug information) when the reference counter would still be 0. This makes a bug in batman-adv better visible because kref_get_unless_zero would have ignored this problem. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
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#
3a01743d |
|
17-Jan-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Rename batadv_gw_node *_free_ref function to *_put The batman-adv source code is the only place in the kernel which uses the *_free_ref naming scheme for the *_put functions. Changing it to *_put makes it more consistent and makes it easier to understand the connection to the *_get functions. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
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#
044fa3ae |
|
17-Jan-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Rename batadv_neigh_ifinfo *_free_ref function to *_put The batman-adv source code is the only place in the kernel which uses the *_free_ref naming scheme for the *_put functions. Changing it to *_put makes it more consistent and makes it easier to understand the connection to the *_get functions. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
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#
25bb2509 |
|
17-Jan-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Rename batadv_neigh_node *_free_ref function to *_put The batman-adv source code is the only place in the kernel which uses the *_free_ref naming scheme for the *_put functions. Changing it to *_put makes it more consistent and makes it easier to understand the connection to the *_get functions. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
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#
82047ad7 |
|
17-Jan-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Rename batadv_hardif *_free_ref function to *_put The batman-adv source code is the only place in the kernel which uses the *_free_ref naming scheme for the *_put functions. Changing it to *_put makes it more consistent and makes it easier to understand the connection to the *_get functions. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
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#
5d967310 |
|
17-Jan-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Rename batadv_orig_node *_free_ref function to *_put The batman-adv source code is the only place in the kernel which uses the *_free_ref naming scheme for the *_put functions. Changing it to *_put makes it more consistent and makes it easier to understand the connection to the *_get functions. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
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#
c18bdd01 |
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31-Jan-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Only put gw_node list reference when removed The batadv_gw_node reference counter in batadv_gw_node_update can only be reduced when the list entry was actually removed. Otherwise the reference counter may reach zero when batadv_gw_node_update is called from two different contexts for the same gw_node but only one context is actually removing the entry from the list. The release function for this gw_node is not called inside the list_lock spinlock protected region because the function batadv_gw_node_update still holds a gw_node reference for the object pointer on the stack. Thus the actual release function (when required) will be called only at the end of the function. Fixes: bd3524c14bd0 ("batman-adv: remove obsolete deleted attribute for gateway node") Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
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#
7c124391 |
|
16-Jan-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Convert batadv_orig_node to kref batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
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#
e7aed321 |
|
16-Jan-2016 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Convert batadv_gw_node to kref batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
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#
0046b040 |
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31-Dec-2015 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: update copyright years for 2016 Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
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#
62fe710f |
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15-Sep-2015 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Fix kerneldoc parsing of return description Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
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#
1e3b4669 |
|
04-Aug-2015 |
Simon Wunderlich <sw@simonwunderlich.de> |
batman-adv: fix gateway client style issues commit 0511575c4d03 ("batman-adv: remove obsolete deleted attribute for gateway node") incorrectly added an empy line and forgot to remove an include. Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
bd3524c1 |
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03-Aug-2015 |
Simon Wunderlich <simon@open-mesh.com> |
batman-adv: remove obsolete deleted attribute for gateway node With rcu, the gateway node deleted attribute is not needed anymore. In fact, it may delay the free of the gateway node and its referenced structures. Therefore remove it altogether and simplify purging as well. Signed-off-by: Simon Wunderlich <simon@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
4f248cff |
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09-Jun-2015 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Remove multiple assignment per line The Linux CodingStyle disallows multiple assignments in a single line. (see chapter 1) Reported-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
6b5e971a |
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26-May-2015 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Replace C99 int types with kernel type (s|u)(8|16|32|64) are the preferred types in the kernel. The use of the standard C99 types u?int(8|16|32|64)_t are objected by some people and even checkpatch now warns about using them. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
571a9637 |
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16-Jun-2015 |
Ruben Wisniewski <ruben@freifunk-nrw.de> |
batman-adv: Avoid u32 overflow during gateway select The gateway selection based on fast connections is using a single value calculated from the average tq (0-255) and the download bandwidth (in 100Kibit). The formula for the first step (tq ** 2 * 10000 * bandwidth) tends to overflow a u32 with low bandwidth settings like 50 [100KiBit] and a tq value of over 92. Changing this to a 64 bit unsigned integer allows to support a bandwidth_down with up to ~2.8e10 [100KiBit] and a perfect tq of 255. This is ~6.6 times higher than the maximum possible value of the gateway announcement TVLV. This problem only affects the non-default gw_sel_class 1. Signed-off-by: Ruben Wisniewsi <ruben@vfn-nrw.de> [sven@narfation.org: rewritten commit message] Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
e071d93e |
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22-Jun-2015 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Replace gw_reselect divisor with simple shift The gw_factor is divided by BATADV_TQ_LOCAL_WINDOW_SIZE ** 2 * 64. But the rest of the calculation has nothing to do with the tq window size and therefore the calculation is just (tmp_gw_factor / (64 ** 3)). Replace it with a simple shift to avoid a costly 64-bit divide when the max_gw_factor is changed from u32 to u64. This type change is necessary to avoid an overflow bug. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
27a4d5ef |
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24-Jun-2015 |
Simon Wunderlich <simon@open-mesh.com> |
batman-adv: initialize up/down values when adding a gateway Without this initialization, gateways which actually announce up/down bandwidth of 0/0 could be added. If these nodes get purged via _batadv_purge_orig() later, the gw_node structure does not get removed since batadv_gw_node_delete() updates the gw_node with up/down bandwidth of 0/0, and the updating function then discards the change and does not free gw_node. This results in leaking the gw_node structures, which references other structures: gw_node -> orig_node -> orig_node_ifinfo -> hardif. When removing the interface later, the open reference on the hardif may cause hangs with the infamous "unregister_netdevice: waiting for mesh1 to become free. Usage count = 1" message. Signed-off-by: Simon Wunderlich <simon@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
7dac6d93 |
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23-Apr-2015 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Remove unused post-VLAN ethhdr in batadv_gw_dhcp_recipient_get Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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#
1e2c2a4f |
|
17-Apr-2015 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Add required includes to all files The header files could not be build indepdent from each other. This is happened because headers didn't include the files for things they've used. This was problematic because the success of a build depended on the knowledge about the right order of local includes. Also source files were not including everything they've used explicitly. Instead they required that transitive includes are always stable. This is problematic because some transitive includes are not obvious, depend on config settings and may not be stable in the future. The order for include blocks are: * primary headers (main.h and the *.h file of a *.c file) * global linux headers * required local headers * extra forward declarations for pointers in function/struct declarations The only exceptions are linux/bitops.h and linux/if_ether.h in packet.h. This header file is shared with userspace applications like batctl and must therefore build together with userspace applications. The header linux/bitops.h is not part of the uapi headers and linux/if_ether.h conflicts with the musl implementation of netinet/if_ether.h. The maintainers rejected the use of __KERNEL__ preprocessor checks and thus these two headers are only in main.h. All files using packet.h first have to include main.h to work correctly. Reported-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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#
9f6446c7 |
|
23-Apr-2015 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: update copyright years for 2015 Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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#
92b83917 |
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22-Feb-2015 |
Joe Perches <joe@perches.com> |
batman-adv: Fix use of seq_has_overflowed() net-next commit 6d91147d183c ("batman-adv: Remove uses of return value of seq_printf") incorrectly changed the overflow occurred return from -1 to 1. Change it back so that the test of batadv_write_buffer_text's return value in batadv_gw_client_seq_print_text works properly. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
6d91147d |
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16-Feb-2015 |
Joe Perches <joe@perches.com> |
batman-adv: Remove uses of return value of seq_printf This function is soon going to return void so remove the return value use. Convert the return value to test seq_has_overflowed() instead. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Antonio Quartulli <antonio@meshcoding.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
aa143d28 |
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01-Sep-2014 |
Antonio Quartulli <antonio@meshcoding.com> |
batman-adv: checkpatch - Please use a blank line after declarations Signed-off-by: Antonio Quartulli <antonio@meshcoding.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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#
0d164491 |
|
20-Dec-2014 |
Antonio Quartulli <antonio@meshcoding.com> |
batman-adv: avoid NULL dereferences and fix if check Gateway having bandwidth_down equal to zero are not accepted at all and so never added to the Gateway list. For this reason checking the bandwidth_down member in batadv_gw_out_of_range() is useless. This is probably a copy/paste error and this check was supposed to be "!gw_node" only. Moreover, the way the check is written now may also lead to a NULL dereference. Fix this by rewriting the if-condition properly. Introduced by 414254e342a0d58144de40c3da777521ebaeeb07 ("batman-adv: tvlv - gateway download/upload bandwidth container") Signed-off-by: Antonio Quartulli <antonio@meshcoding.com> Reported-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
377fe0f9 |
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01-May-2014 |
Antonio Quartulli <antonio@open-mesh.com> |
batman-adv: increase orig refcount when storing ref in gw_node A pointer to the orig_node representing a bat-gateway is stored in the gw_node->orig_node member, but the refcount for such orig_node is never increased. This leads to memory faults when gw_node->orig_node is accessed and the originator has already been freed. Fix this by increasing the refcount on gw_node creation and decreasing it on gw_node free. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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#
8fdd0153 |
|
21-Jan-2014 |
Antonio Quartulli <antonio@meshcoding.com> |
batman-adv: prefer ether_addr_copy to memcpy On some architectures ether_addr_copy() is slightly faster than memcpy() therefore use the former when possible. Signed-off-by: Antonio Quartulli <antonio@meshcoding.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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#
927c2ed7 |
|
19-Jan-2014 |
Linus Lüssing <linus.luessing@c0d3.blue> |
batman-adv: use vlan_/eth_hdr() instead of skb->data in interface_tx path Our .ndo_start_xmit handler (batadv_interface_tx()) can rely on having the skb mac header pointer set correctly since the following commit present in kernels >= 3.9: "net: reset mac header in dev_start_xmit()" (6d1ccff627) Therefore we can safely use eth_hdr() and vlan_eth_hdr() instead of skb->data now, which spares us some ugly type casts. At the same time set the mac_header in batadv_dat_snoop_incoming_arp_request() before sending the skb along the TX path. Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
2045ceae |
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12-Feb-2014 |
stephen hemminger <stephen@networkplumber.org> |
net: remove unnecessary return's One of my pet coding style peeves is the practice of adding extra return; at the end of function. Kill several instances of this in network code. I suppose some coccinelle wizardy could do this automatically. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
e19f9759 |
|
04-Jan-2014 |
Simon Wunderlich <sw@simonwunderlich.de> |
batman-adv: update copyright years for 2014 Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
7351a482 |
|
13-Nov-2013 |
Simon Wunderlich <simon@open-mesh.com> |
batman-adv: split out router from orig_node For the network wide multi interface optimization there are different routers for each outgoing interface (outgoing from the OGM perspective, incoming for payload traffic). To reflect this, change the router and associated data to a list of routers. While at it, rename batadv_orig_node_get_router() to batadv_orig_router_get() to follow the new naming scheme. Signed-off-by: Simon Wunderlich <simon@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
89652331 |
|
13-Nov-2013 |
Simon Wunderlich <simon@open-mesh.com> |
batman-adv: split tq information in neigh_node struct For the network wide multi interface optimization it is required to save metrics per outgoing interface in one neighbor. Therefore a new type is introduced to keep interface-specific information. This also requires some changes in access and list management. The compare and equiv_or_better API calls are changed to take the outgoing interface into consideration. Signed-off-by: Simon Wunderlich <simon@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
6c413b1c |
|
05-Nov-2013 |
Antonio Quartulli <antonio@open-mesh.com> |
batman-adv: send every DHCP packet as bat-unicast In different situations it is possible that the DHCP server or client uses broadcast Ethernet frames to send messages to each other. The GW component in batman-adv takes care of using bat-unicast packets to bring broadcast DHCP Discover/Requests to the "best" server. On the way back the DHCP server usually sends unicasts, but upon client request it may decide to use broadcasts as well. This patch improves the GW component so that it now snoops and sends as unicast all the DHCP packets, no matter if they were generated by a DHCP server or client. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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#
4e820e72 |
|
04-Nov-2013 |
Antonio Quartulli <antonio@open-mesh.com> |
batman-adv: rename gw_deselect() to gw_reselect() The function batadv_gw_deselect() is actually not deselecting anything. It is just informing the GW code to perform a re-election procedure when possible. The current gateway is not being touched at all and therefore the name of this function is rather misleading. Rename it to batadv_gw_reselect() to batadv_gw_reselect() to make its behaviour easier to grasp. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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#
f3163181 |
|
04-Nov-2013 |
Antonio Quartulli <antonio@open-mesh.com> |
batman-adv: deselect current GW on client mode switch off When switching from gw_mode client to either off or server the current selected gateway has to be deselected. In this way when client mode is enabled again a gateway re-election is forced and a GW_ADD event is consequently sent. The current behaviour instead is to keep the current gateway leading to no GW_ADD event when gw_mode client is selected for a second time Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
ebf38fb7 |
|
03-Nov-2013 |
Antonio Quartulli <antonio@meshcoding.com> |
batman-adv: remove FSF address from GPL disclaimer As suggested by checkpatch, remove all the references to the FSF address since the kernel already has one reference in its documentation. In this way it is easier to update it in case of future changes. Signed-off-by: Antonio Quartulli <antonio@meshcoding.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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#
0538f759 |
|
01-Sep-2013 |
Antonio Quartulli <antonio@open-mesh.com> |
batman-adv: make struct batadv_neigh_node algorithm agnostic some of the fields in struct batadv_neigh_node are strictly related to the B.A.T.M.A.N. IV algorithm. In order to make the struct usable by any routing algorithm it has to be split and made more generic Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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#
e75de4fa |
|
10-Jul-2013 |
Antonio Quartulli <antonio@open-mesh.com> |
batman-adv: remove bogus comment this comment refers to the old batmand codebase and does not make sense anymore. Remove it Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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#
bbb877ed |
|
03-Jun-2013 |
Antonio Quartulli <antonio@open-mesh.com> |
batman-adv: make the GW module correctly talk to the new VLAN-TT The gateway code is now adapted in order to correctly interact with the Translation Table component by using the vlan ID Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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#
c018ad3d |
|
03-Jun-2013 |
Antonio Quartulli <antonio@open-mesh.com> |
batman-adv: add the VLAN ID attribute to the TT entry To make the translation table code VLAN-aware, each entry must carry the VLAN ID which it belongs to. This patch adds such attribute to the related TT structures. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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#
293e9338 |
|
18-May-2013 |
Antonio Quartulli <ordex@autistici.org> |
batman-adv: use htons when possible When comparing a network ordered value with a constant, it is better to convert the constant at compile time by means of htons() instead of converting the value at runtime using ntohs(). This refactoring may slightly improve the code performance. Moreover substitute __constant_htons() with htons() since the latter increase readability and it is smart enough to be as efficient as the former Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
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#
f7f8ed56 |
|
12-May-2013 |
Antonio Quartulli <ordex@autistici.org> |
batman-adv: h_vlan_encapsulated_proto access refactoring In case of a VLAN tagged frame the ethhdr pointer is moved forward by 4 bytes so that the offset of h_proto in struct ethhdr matches the real h_vlan_encapsulated_proto address in the skb. While this trickery is correct it makes the code harder to understand and may lead to bugs in case of re-use of ethhdr for other purposes. This patch introduces a proto variable to make things cleaner and easier to understand. Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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#
414254e3 |
|
23-Apr-2013 |
Marek Lindner <lindner_marek@yahoo.de> |
batman-adv: tvlv - gateway download/upload bandwidth container Prior to this patch batman-adv read the advertised uplink bandwidth from userspace and compressed this information into a single byte called "gateway class". Now the download & upload bandwidth information is sent as-is. No userspace change is necessary since the sysfs API always allowed to specify a bandwidth. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Spyros Gasteratos <morfeas3000@gmail.com> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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#
c6eaa3f0 |
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12-Jul-2013 |
Antonio Quartulli <antonio@open-mesh.com> |
batman-adv: send GW_DEL event when the gw client mode is deselected Whenever the GW client mode is deselected, a DEL event has to be sent in order to tell userspace that the current gateway has been lost. Send the uevent on state change only if a gateway was currently selected. Reported-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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#
9d2c9488 |
|
06-Aug-2013 |
Linus Lüssing <linus.luessing@c0d3.blue> |
batman-adv: fix potential kernel paging errors for unicast transmissions There are several functions which might reallocate skb data. Currently some places keep reusing their old ethhdr pointer regardless of whether they became invalid after such a reallocation or not. This potentially leads to kernel paging errors. This patch fixes these by refetching the ethdr pointer after the potential reallocations. Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
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#
0c814653 |
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21-Mar-2013 |
Antonio Quartulli <ordex@autistici.org> |
batman-adv: use seq_puts instead of seq_printf when the format is constant As reported by checkpatch, seq_puts has to be preferred with respect to seq_printf when the format is a constant string (no va_args) Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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#
b67bfe0d |
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27-Feb-2013 |
Sasha Levin <sasha.levin@oracle.com> |
hlist: drop the node parameter from iterators I'm not sure why, but the hlist for each entry iterators were conceived list_for_each_entry(pos, head, member) The hlist ones were greedy and wanted an extra parameter: hlist_for_each_entry(tpos, pos, head, member) Why did they need an extra pos parameter? I'm not quite sure. Not only they don't really need it, it also prevents the iterator from looking exactly like the list iterator, which is unfortunate. Besides the semantic patch, there was some manual work required: - Fix up the actual hlist iterators in linux/list.h - Fix up the declaration of other iterators based on the hlist ones. - A very small amount of places were using the 'node' parameter, this was modified to use 'obj->member' instead. - Coccinelle didn't handle the hlist_for_each_entry_safe iterator properly, so those had to be fixed up manually. The semantic patch which is mostly the work of Peter Senna Tschudin is here: @@ iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host; type T; expression a,c,d,e; identifier b; statement S; @@ -T b; <+... when != b ( hlist_for_each_entry(a, - b, c, d) S | hlist_for_each_entry_continue(a, - b, c) S | hlist_for_each_entry_from(a, - b, c) S | hlist_for_each_entry_rcu(a, - b, c, d) S | hlist_for_each_entry_rcu_bh(a, - b, c, d) S | hlist_for_each_entry_continue_rcu_bh(a, - b, c) S | for_each_busy_worker(a, c, - b, d) S | ax25_uid_for_each(a, - b, c) S | ax25_for_each(a, - b, c) S | inet_bind_bucket_for_each(a, - b, c) S | sctp_for_each_hentry(a, - b, c) S | sk_for_each(a, - b, c) S | sk_for_each_rcu(a, - b, c) S | sk_for_each_from -(a, b) +(a) S + sk_for_each_from(a) S | sk_for_each_safe(a, - b, c, d) S | sk_for_each_bound(a, - b, c) S | hlist_for_each_entry_safe(a, - b, c, d, e) S | hlist_for_each_entry_continue_rcu(a, - b, c) S | nr_neigh_for_each(a, - b, c) S | nr_neigh_for_each_safe(a, - b, c, d) S | nr_node_for_each(a, - b, c) S | nr_node_for_each_safe(a, - b, c, d) S | - for_each_gfn_sp(a, c, d, b) S + for_each_gfn_sp(a, c, d) S | - for_each_gfn_indirect_valid_sp(a, c, d, b) S + for_each_gfn_indirect_valid_sp(a, c, d) S | for_each_host(a, - b, c) S | for_each_host_safe(a, - b, c, d) S | for_each_mesh_entry(a, - b, c, d) S ) ...+> [akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c] [akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c] [akpm@linux-foundation.org: checkpatch fixes] [akpm@linux-foundation.org: fix warnings] [akpm@linux-foudnation.org: redo intrusive kvm changes] Tested-by: Peter Senna Tschudin <peter.senna@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Gleb Natapov <gleb@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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#
0b873931 |
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03-Jan-2013 |
Antonio Quartulli <ordex@autistici.org> |
batman-adv: update copyright years Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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#
30da63a6 |
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03-Aug-2012 |
Marek Lindner <lindner_marek@yahoo.de> |
batman-adv: consolidate duplicated primary_if checking code Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
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#
c67893d1 |
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08-Jul-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Reduce accumulated length of simple statements Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
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#
807736f6 |
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15-Jul-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Split batadv_priv in sub-structures for features The structure batadv_priv grows everytime a new feature is introduced. It gets hard to find the parts of the struct that belongs to a specific feature. This becomes even harder by the fact that not every feature uses a prefix in the member name. The variables for bridge loop avoidence, gateway handling, translation table and visualization server are moved into separate structs that are included in the bat_priv main struct. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
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#
caa0bf64 |
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03-Aug-2012 |
Marek Lindner <lindner_marek@yahoo.de> |
batman-adv: select an internet gateway if none was chosen This is a regression introduced by: 2265c141086474bbae55a5bb3afa1ebb78ccaa7c ("batman-adv: gateway election code refactoring") Reported-by: Nicolás Echániz <nicoechaniz@codigosur.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
b706b13b |
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10-Jun-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Remove bat_ prefix from bat_{debugfs, sysfs}.{c, h} The "bat_" prefix in the source files implementing the batman-adv sysfs and debugfs interface doesn't have a special meaning and are only used by these files and files that implement the actual B.A.T.M.A.N. path finding algorithm. The prefix is better suited to mark files that are used to implement the main part of the path finding. All other files should not use it and therefore gets renamed. Signed-off-by: Sven Eckelmann <sven@narfation.org>
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56303d34 |
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05-Jun-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix types structs with batadv_ Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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39c75a51 |
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03-Jun-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix main enum with BATADV_ Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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e9a4f295 |
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03-Jun-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix hard-interface enum with BATADV_ Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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#
cd646ab1 |
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03-Jun-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix gateway enum with BATADV_ Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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#
42d0b044 |
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03-Jun-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix main defines with BATADV_ Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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#
347c80f0 |
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03-Jun-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix local defines with BATADV_ Reported-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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3e34819e |
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16-May-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix remaining function like macros with batadv_ Signed-off-by: Sven Eckelmann <sven@narfation.org>
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#
1409a834 |
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12-May-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix gateway_client local static functions with batadv_ All non-static symbols of batman-adv were prefixed with batadv_ to avoid collisions with other symbols of the kernel. Other symbols of batman-adv should use the same prefix to keep the naming scheme consistent. Signed-off-by: Sven Eckelmann <sven@narfation.org>
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1eda58bf |
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12-May-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix main static inline functions with batadv_ All non-static symbols of batman-adv were prefixed with batadv_ to avoid collisions with other symbols of the kernel. Other symbols of batman-adv should use the same prefix to keep the naming scheme consistent. Signed-off-by: Sven Eckelmann <sven@narfation.org>
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e5d89254 |
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12-May-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix hard-interface static inline functions with batadv_ All non-static symbols of batman-adv were prefixed with batadv_ to avoid collisions with other symbols of the kernel. Other symbols of batman-adv should use the same prefix to keep the naming scheme consistent. Signed-off-by: Sven Eckelmann <sven@narfation.org>
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9cfc7bd6 |
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11-May-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Reformat multiline comments to consistent style batman-adv doesn't follow the style for multiline comments that David S. Miller prefers. All comments should be reformatted to follow this consistent style to make the code slightly more readable. Signed-off-by: Sven Eckelmann <sven@narfation.org>
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08c36d3e |
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11-May-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix translation-table non-static functions with batadv_ batman-adv can be compiled as part of the kernel instead of an module. In that case the linker will see all non-static symbols of batman-adv and all other non-static symbols of the kernel. This could lead to symbol collisions. A prefix for the batman-adv symbols that defines their private namespace avoids such a problem. Reported-by: David Miller <davem@davemloft.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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30d3c511 |
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11-May-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix routing non-static functions with batadv_ batman-adv can be compiled as part of the kernel instead of an module. In that case the linker will see all non-static symbols of batman-adv and all other non-static symbols of the kernel. This could lead to symbol collisions. A prefix for the batman-adv symbols that defines their private namespace avoids such a problem. Reported-by: David Miller <davem@davemloft.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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7d211efc |
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11-May-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix originator non-static functions with batadv_ batman-adv can be compiled as part of the kernel instead of an module. In that case the linker will see all non-static symbols of batman-adv and all other non-static symbols of the kernel. This could lead to symbol collisions. A prefix for the batman-adv symbols that defines their private namespace avoids such a problem. Reported-by: David Miller <davem@davemloft.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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#
84d5e5e0 |
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11-May-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix gateway-common non-static functions with batadv_ batman-adv can be compiled as part of the kernel instead of an module. In that case the linker will see all non-static symbols of batman-adv and all other non-static symbols of the kernel. This could lead to symbol collisions. A prefix for the batman-adv symbols that defines their private namespace avoids such a problem. Reported-by: David Miller <davem@davemloft.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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#
7cf06bc6 |
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11-May-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix gateway-client non-static functions with batadv_ batman-adv can be compiled as part of the kernel instead of an module. In that case the linker will see all non-static symbols of batman-adv and all other non-static symbols of the kernel. This could lead to symbol collisions. A prefix for the batman-adv symbols that defines their private namespace avoids such a problem. Reported-by: David Miller <davem@davemloft.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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5853e22c |
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11-May-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Prefix bat_sysfs non-static functions with batadv_ batman-adv can be compiled as part of the kernel instead of an module. In that case the linker will see all non-static symbols of batman-adv and all other non-static symbols of the kernel. This could lead to symbol collisions. A prefix for the batman-adv symbols that defines their private namespace avoids such a problem. Reported-by: David Miller <davem@davemloft.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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9205cc52 |
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27-Feb-2012 |
Antonio Quartulli <ordex@autistici.org> |
batman-adv: fix wrong dhcp option list browsing In is_type_dhcprequest(), while parsing a DHCP message, if the entry we found in the option list is neither a padding nor the dhcp-type, we have to ignore it and jump as many bytes as its length + 1. The "+ 1" byte is given by the subtype field itself that has to be jumped too. Reported-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
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86ceb360 |
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07-Mar-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Ignore 80-chars per line limits for strings Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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7c64fd98 |
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28-Feb-2012 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Fix indentation of multiline statements Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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567db7b0 |
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31-Dec-2011 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Update copyright years Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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032b7969 |
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20-Dec-2011 |
Marek Lindner <lindner_marek@yahoo.de> |
batman-adv: convert time_after instances to has_timed_out To increase readability the has_timed_out() functions has been introduced. This patch converts existing time_after() calls to use this wrapper function (if applicable). This patch also converts all timeouts to miliseconds to be consistent. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
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2ef04f47 |
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28-Nov-2011 |
Dan Carpenter <dan.carpenter@oracle.com> |
batman-adv: remove extra negation in gw_out_of_range() There is a typo here where an extra '!' made the check to the opposite of what was intended. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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be7af5cf |
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08-Sep-2011 |
Marek Lindner <lindner_marek@yahoo.de> |
batman-adv: refactoring gateway handling code Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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015758d0 |
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09-Jul-2011 |
Antonio Quartulli <ordex@autistici.org> |
batman-adv: correct several typ0s in the comments Several typos have been corrected and some sentences have been rephrased Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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44c4349a |
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05-Jul-2011 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Replace version info instead of appending them The version number of modules build outside of the tree can get revision numbers added. This is useful to give hints about the revision of a distribution package and the used patchset. The prepended source number or branch name doesn't add any additional information which would help to identify problems and can therefore be omitted. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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43676ab5 |
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26-Apr-2011 |
Antonio Quartulli <ordex@autistici.org> |
batman-adv: improved gateway tq-based selection If a client issues a DHCPREQUEST for renewal, the packet is dropped if the old destination (the old gateway for the client) TQ is smaller than the current best gateway TQ less GW_THRESHOLD Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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19595e05 |
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12-Jun-2011 |
Antonio Quartulli <ordex@autistici.org> |
batman-adv: throw uevent in userspace on gateway add/change/del event In case of new default gw, changing the default gw or deleting the default gw a uevent is triggered with type=gw, action=add/change/del and data={GW_ORIG_ADDRESS} (if any). Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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2265c141 |
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26-Apr-2011 |
Antonio Quartulli <ordex@autistici.org> |
batman-adv: gateway election code refactoring The gateway election mechanism has been a little revised. Now the gw_election is trigered by an atomic_t flag (gw_reselect) which is set to 1 in case of election needed, avoding to set curr_gw to NULL. Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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b4e17054 |
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15-Jun-2011 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Reduce usage of char char was used in different places to store information without really using the characteristics of that data type or by ignoring the fact that char has not a well defined signedness. Signed-off-by: Sven Eckelmann <sven@narfation.org>
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ecbd5321 |
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09-Jun-2011 |
Marek Lindner <lindner_marek@yahoo.de> |
batman-adv: use NO_FLAGS define instead of hard-coding 0 The definition NO_FLAGS was introduced to make the code more readable and shall be used to initialize flag fields. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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6b9aadfa |
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03-Jun-2011 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Don't return value in void function gw_node_delete is defined with "void" as return type, but still tries to return a value. The called function gw_node_delete is also return as void and thus doesn't provide a value for us. Signed-off-by: Sven Eckelmann <sven@narfation.org>
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728cbc6a |
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14-May-2011 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Use rcu_dereference_protected by update-side Usually rcu_dereference isn't necessary in situations were the RCU-protected data structure cannot change, but sparse and lockdep still need a similar functionality for analysis. rcu_dereference_protected implements the reduced version which should be used to support the dynamic and static analysis. Signed-off-by: Sven Eckelmann <sven@narfation.org>
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704509b8 |
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14-May-2011 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Calculate sizeof using variable insead of types Documentation/CodingStyle recommends to use the form p = kmalloc(sizeof(*p), ...); to calculate the size of a struct and not the version where the struct name is spelled out to prevent bugs when the type of p changes. This also seems appropriate for manipulation of buffers when they are directly associated with p. Signed-off-by: Sven Eckelmann <sven@narfation.org>
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747e4221 |
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14-May-2011 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Add const type qualifier for pointers batman-adv uses pointers which are marked as const and should not violate that type qualifier by passing it to functions which force a cast to the non-const version. Signed-off-by: Sven Eckelmann <sven@narfation.org>
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1b38bed5 |
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10-May-2011 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Use kzalloc rather than kmalloc followed by memset with 0 Signed-off-by: Sven Eckelmann <sven@narfation.org>
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eb340b2f |
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02-May-2011 |
Paul E. McKenney <paulmck@kernel.org> |
batman,rcu: convert call_rcu(gw_node_free_rcu) to kfree_rcu The RCU callback gw_node_free_rcu() just calls kfree(), so we can use kfree_rcu() instead of call_rcu(). Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Marek Lindner <lindner_marek@yahoo.de> Cc: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Acked-by: David S. Miller <davem@davemloft.net> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Acked-by: Sven Eckelmann <sven@narfation.org>
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32ae9b22 |
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20-Apr-2011 |
Marek Lindner <lindner_marek@yahoo.de> |
batman-adv: Make bat_priv->primary_if an rcu protected pointer The rcu protected macros rcu_dereference() and rcu_assign_pointer() for the bat_priv->primary_if need to be used, as well as spin/rcu locking. Otherwise we might end up using a primary_if pointer pointing to already freed memory. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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71e4aa9c |
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25-Apr-2011 |
Antonio Quartulli <ordex@autistici.org> |
batman-adv: fix gw_node_update() and gw_election() This is a regression from c4aac1ab9b973798163b34939b522f01e4d28ac9 - gw_node_update() doesn't add a new gw_node in case of empty curr_gw. This means that at the beginning no gw_node is added, leading to an empty gateway list. - gw_election() is terminating in case of curr_gw == NULL. It has to terminate in case of curr_gw != NULL Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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c4aac1ab |
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23-Mar-2011 |
Marek Lindner <lindner_marek@yahoo.de> |
batman-adv: concentrate all curr_gw related rcu operations in select/deselect functions Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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e1a5382f |
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14-Mar-2011 |
Linus Lüssing <linus.luessing@c0d3.blue> |
batman-adv: Make orig_node->router an rcu protected pointer The rcu protected macros rcu_dereference() and rcu_assign_pointer() for the orig_node->router need to be used, as well as spin/rcu locking. Otherwise we might end up using a router pointer pointing to already freed memory. Therefore this commit introduces the safe getter method orig_node_get_router(). Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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57f0c07c |
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14-Mar-2011 |
Linus Lüssing <linus.luessing@c0d3.blue> |
batman-adv: Simplify gw_check_election(), use gw_get_selected() gw_get_selected() can get us the desired orig_node directly, therefore reusing that function in gw_check_election(). Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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4c804850 |
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14-Mar-2011 |
Linus Lüssing <linus.luessing@c0d3.blue> |
batman-adv: Make gateway_get_selected type safe Make the return value explicit instead of (void *). Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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7b36e8ee |
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17-Feb-2011 |
Marek Lindner <lindner_marek@yahoo.de> |
batman-adv: Correct rcu refcounting for orig_node It might be possible that 2 threads access the same data in the same rcu grace period. The first thread calls call_rcu() to decrement the refcount and free the data while the second thread increases the refcount to use the data. To avoid this race condition all refcount operations have to be atomic. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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43c70ad5 |
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13-Feb-2011 |
Linus Lüssing <linus.luessing@c0d3.blue> |
batman-adv: Increase orig_node refcount before releasing rcu read lock When unicast_send_skb() is increasing the orig_node's refcount another thread might have been freeing this orig_node already. We need to increase the refcount in the rcu read lock protected area to avoid that. Signed-off-by: Linus Lüssing <linus.luessing@ascom.ch> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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5d02b3cd |
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13-Feb-2011 |
Linus Lüssing <linus.luessing@c0d3.blue> |
batman-adv: Make bat_priv->curr_gw an rcu protected pointer The rcu protected macros rcu_dereference() and rcu_assign_pointer() for the bat_priv->curr_gw need to be used, as well as spin/rcu locking. Otherwise we might end up using a curr_gw pointer pointing to already freed memory. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Linus Lüssing <linus.luessing@ascom.ch> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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25b6d3c1 |
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10-Feb-2011 |
Marek Lindner <lindner_marek@yahoo.de> |
batman-adv: Correct rcu refcounting for gw_node It might be possible that 2 threads access the same data in the same rcu grace period. The first thread calls call_rcu() to decrement the refcount and free the data while the second thread increases the refcount to use the data. To avoid this race condition all refcount operations have to be atomic. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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64afe353 |
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27-Jan-2011 |
Sven Eckelmann <sven@narfation.org> |
batman-adv: Update copyright years Signed-off-by: Sven Eckelmann <sven@narfation.org>
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c6c8fea2 |
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13-Dec-2010 |
Sven Eckelmann <sven@narfation.org> |
net: Add batman-adv meshing protocol B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is a routing protocol for multi-hop ad-hoc mesh networks. The networks may be wired or wireless. See http://www.open-mesh.org/ for more information and user space tools. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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