linux-dev/net/batman-adv/send.c, branch linus/master

batman-adv: Migrate to linux/container_of.h

2022-03-02T08:00:13Z

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 Signed-off-by: Simon Wunderlich

batman-adv: bcast: remove remaining skb-copy calls

2021-08-18T16:39:00Z

We currently have two code paths for broadcast packets: A) self-generated, via batadv_interface_tx()-> batadv_send_bcast_packet(). B) received/forwarded, via batadv_recv_bcast_packet()-> batadv_forw_bcast_packet(). For A), self-generated broadcast packets: The only modifications to the skb data is the ethernet header which is added/pushed to the skb in batadv_send_broadcast_skb()->batadv_send_skb_packet(). However before doing so, batadv_skb_head_push() is called which calls skb_cow_head() to unshare the space for the to be pushed ethernet header. So for this case, it is safe to use skb clones. For B), received/forwarded packets: The same applies as in A) for the to be forwarded packets. Only the ethernet header is added. However after (queueing for) forwarding the packet in batadv_recv_bcast_packet()->batadv_forw_bcast_packet(), a packet is additionally decapsulated and is sent up the stack through batadv_recv_bcast_packet()->batadv_interface_rx(). Protocols higher up the stack are already required to check if the packet is shared and create a copy for further modifications. When the next (protocol) layer works correctly, it cannot happen that it tries to operate on the data behind the skb clone which is still queued up for forwarding. Co-authored-by: Sven Eckelmann Signed-off-by: Sven Eckelmann Signed-off-by: Linus Lüssing Signed-off-by: Simon Wunderlich

batman-adv: Drop NULL check before dropping references

2021-08-08T18:21:40Z

batman-adv: bcast: avoid skb-copy for (re)queued broadcasts

2021-05-17T10:00:44Z

Broadcast packets send via batadv_send_outstanding_bcast_packet() were originally copied in batadv_forw_bcast_packet_to_list() before being queued. And after that only the ethernet header will be pushed through batadv_send_broadcast_skb()->batadv_send_skb_packet() which works safely on skb clones as it uses batadv_skb_head_push()->skb_cow_head(). Signed-off-by: Linus Lüssing Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich

batman-adv: bcast: queue per interface, if needed

2021-05-17T10:00:44Z

Currently we schedule a broadcast packet like: 3x: [ [(re-)queue] --> for(hard-if): maybe-transmit ] The intention of queueing a broadcast packet multiple times is to increase robustness for wireless interfaces. However on interfaces which we only broadcast on once the queueing induces an unnecessary penalty. This patch restructures the queueing to be performed on a per interface basis: for(hard-if): - transmit - if wireless: [queue] --> transmit --> [requeue] --> transmit Next to the performance benefits on non-wireless interfaces this should also make it easier to apply alternative strategies for transmissions on wireless interfaces in the future (for instance sending via unicast transmissions on wireless interfaces, without queueing in batman-adv, if appropriate). Signed-off-by: Linus Lüssing Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich

batman-adv: Drop publication years from copyright info

2021-02-06T08:22:10Z

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 Acked-by: Marek Lindner Signed-off-by: Simon Wunderlich

batman-adv: Drop repeated words in comments

2020-08-18T17:39:54Z

checkpatch found various instances of "Possible repeated word" in various comments. Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich

batman-adv: Fix typos and grammar in documentation

2020-06-26T08:36:30Z

Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich

2019-12-31T23:00:33Z