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2022-07-09mptcp: move MPTCPOPT_HMAC_LEN to net/mptcp.hGeliang Tang1-1/+2
Move macro MPTCPOPT_HMAC_LEN definition from net/mptcp/protocol.h to include/net/mptcp.h. Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: Geliang Tang <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-07-099p: Add client parameter to p9_req_put()Kent Overstreet1-1/+1
This is to aid in adding mempools, in the next patch. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Kent Overstreet <[email protected]> Cc: Eric Van Hensbergen <[email protected]> Cc: Latchesar Ionkov <[email protected]> Signed-off-by: Dominique Martinet <[email protected]>
2022-07-099p: Drop kref usageKent Overstreet1-3/+3
An upcoming patch is going to require passing the client through p9_req_put() -> p9_req_free(), but that's awkward with the kref indirection - so this patch switches to using refcount_t directly. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Kent Overstreet <[email protected]> Cc: Eric Van Hensbergen <[email protected]> Cc: Latchesar Ionkov <[email protected]> Signed-off-by: Dominique Martinet <[email protected]>
2022-07-08tls: create an internal headerJakub Kicinski1-276/+1
include/net/tls.h is getting a little long, and is probably hard for driver authors to navigate. Split out the internals into a header which will live under net/tls/. While at it move some static inlines with a single user into the source files, add a few tls_ prefixes and fix spelling of 'proccess'. Signed-off-by: Jakub Kicinski <[email protected]>
2022-07-08tls: rx: always allocate max possible aad size for decryptJakub Kicinski1-0/+1
AAD size is either 5 or 13. Really no point complicating the code for the 8B of difference. This will also let us turn the chunked up buffer into a sane struct. Signed-off-by: Jakub Kicinski <[email protected]>
2022-07-08strparser: pad sk_skb_cb to avoid straddling cachelinesJakub Kicinski1-4/+8
sk_skb_cb lives within skb->cb[]. skb->cb[] straddles 2 cache lines, each containing 24B of data. The first cache line does not contain much interesting information for users of strparser, so pad things a little. Previously strp_msg->full_len would live in the first cache line and strp_msg->offset in the second. We need to reorder the 8 byte temp_reg with struct tls_msg to prevent a 4B hole which would push the struct over 48B. Signed-off-by: Jakub Kicinski <[email protected]>
2022-07-08net: Fix data-races around sysctl_mem.Kuniyuki Iwashima1-1/+1
While reading .sysctl_mem, it can be changed concurrently. So, we need to add READ_ONCE() to avoid data-races. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Kuniyuki Iwashima <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-07-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski1-0/+1
No conflicts. Signed-off-by: Jakub Kicinski <[email protected]>
2022-07-06tls: rx: add sockopt for enabling optimistic decrypt with TLS 1.3Jakub Kicinski1-0/+3
Since optimisitic decrypt may add extra load in case of retries require socket owner to explicitly opt-in. Signed-off-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-07-06net/sched: act_police: allow 'continue' action offloadVlad Buslov1-0/+1
Offloading police with action TC_ACT_UNSPEC was erroneously disabled even though it was supported by mlx5 matchall offload implementation, which didn't verify the action type but instead assumed that any single police action attached to matchall classifier is a 'continue' action. Lack of action type check made it non-obvious what mlx5 matchall implementation actually supports and caused implementers and reviewers of referenced commits to disallow it as a part of improved validation code. Fixes: b8cd5831c61c ("net: flow_offload: add tc police action parameters") Fixes: b50e462bc22d ("net/sched: act_police: Add extack messages for offload failure") Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Ido Schimmel <[email protected]> Tested-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-07-05net: sched: provide shim definitions for taprio_offload_{get,free}Vladimir Oltean1-0/+17
All callers of taprio_offload_get() and taprio_offload_free() prior to the blamed commit are conditionally compiled based on CONFIG_NET_SCH_TAPRIO. felix_vsc9959.c is different; it provides vsc9959_qos_port_tas_set() even when taprio is compiled out. Provide shim definitions for the functions exported by taprio so that felix_vsc9959.c is able to compile. vsc9959_qos_port_tas_set() in that case is dead code anyway, and ocelot_port->taprio remains NULL, which is fine for the rest of the logic. Fixes: 1c9017e44af2 ("net: dsa: felix: keep reference on entire tc-taprio config") Reported-by: Colin Foster <[email protected]> Signed-off-by: Vladimir Oltean <[email protected]> Tested-by: Colin Foster <[email protected]> Acked-by: Vinicius Costa Gomes <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>
2022-07-02net: dsa: tag_ksz: add tag handling for Microchip LAN937xPrasanna Vengateshan1-0/+2
The Microchip LAN937X switches have a tagging protocol which is very similar to KSZ tagging. So that the implementation is added to tag_ksz.c and reused common APIs Signed-off-by: Prasanna Vengateshan <[email protected]> Signed-off-by: Arun Ramadoss <[email protected]> Reviewed-by: Vladimir Oltean <[email protected]> Reviewed-by: Florian Fainelli <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-07-029p fid refcount: add a 9p_fid_ref tracepointDominique Martinet1-0/+13
This adds a tracepoint event for 9p fid lifecycle tracing: when a fid is created, its reference count increased/decreased, and freed. The new 9p_fid_ref tracepoint should help anyone wishing to debug any fid problem such as missing clunk (destroy) or use-after-free. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Dominique Martinet <[email protected]>
2022-07-029p fid refcount: add p9_fid_get/put wrappersDominique Martinet1-0/+28
I was recently reminded that it is not clear that p9_client_clunk() was actually just decrementing refcount and clunking only when that reaches zero: make it clear through a set of helpers. This will also allow instrumenting refcounting better for debugging next patch Link: https://lkml.kernel.org/r/[email protected] Reviewed-by: Tyler Hicks <[email protected]> Reviewed-by: Christian Schoenebeck <[email protected]> Signed-off-by: Dominique Martinet <[email protected]>
2022-07-01net: remove SK_RECLAIM_THRESHOLD and SK_RECLAIM_CHUNKPaolo Abeni1-5/+0
There are no more users for the mentioned macros, just drop them. Signed-off-by: Paolo Abeni <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-07-01wifi: nl80211: retrieve EHT related elements in AP modeAloka Dixit1-0/+4
Add support to retrieve EHT capabilities and EHT operation elements passed by the userspace in the beacon template and store the pointers in struct cfg80211_ap_settings to be used by the drivers. Co-developed-by: Vikram Kandukuri <[email protected]> Signed-off-by: Vikram Kandukuri <[email protected]> Co-developed-by: Veerendranath Jakkam <[email protected]> Signed-off-by: Veerendranath Jakkam <[email protected]> Signed-off-by: Aloka Dixit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Johannes Berg <[email protected]>
2022-07-01wifi: cfg80211: Increase akm_suites array size in cfg80211_crypto_settingsVeerendranath Jakkam1-1/+10
Increase akm_suites array size in struct cfg80211_crypto_settings to 10 and advertise the capability to userspace. This allows userspace to send more than two AKMs to driver in netlink commands such as NL80211_CMD_CONNECT. This capability is needed for implementing WPA3-Personal transition mode correctly with any driver that handles roaming internally. Currently, the possible AKMs for multi-AKM connect can include PSK, PSK-SHA-256, SAE, FT-PSK and FT-SAE. Since the count is already 5, increasing the akm_suites array size to 10 should be reasonable for future usecases. Signed-off-by: Veerendranath Jakkam <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Johannes Berg <[email protected]>
2022-07-01wifi: mac80211: switch airtime fairness back to deficit round-robin schedulingFelix Fietkau1-3/+14
This reverts commits 6a789ba679d652587532cec2a0e0274fda172f3b and 2433647bc8d983a543e7d31b41ca2de1c7e2c198. The virtual time scheduler code has a number of issues: - queues slowed down by hardware/firmware powersave handling were not properly handled. - on ath10k in push-pull mode, tx queues that the driver tries to pull from were starved, causing excessive latency - delay between tx enqueue and reported airtime use were causing excessively bursty tx behavior The bursty behavior may also be present on the round-robin scheduler, but there it is much easier to fix without introducing additional regressions Signed-off-by: Felix Fietkau <[email protected]> Acked-by: Toke Høiland-Jørgensen <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Johannes Berg <[email protected]>
2022-07-01wifi: mac80211: fix a kernel-doc complaintJohannes Berg1-1/+1
Somehow kernel-doc complains here about strong markup, but we really don't need the [] so just remove that. Signed-off-by: Johannes Berg <[email protected]>
2022-07-01wifi: cfg80211: remove redundant documentationJohannes Berg1-10/+0
These struct members no longer exist, remove them from documentation. Signed-off-by: Johannes Berg <[email protected]>
2022-07-01wifi: mac80211: add a missing comma at kernel-doc markupMauro Carvalho Chehab1-1/+1
The lack of the colon makes it not parse the function parameter: include/net/mac80211.h:6250: warning: Function parameter or member 'vif' not described in 'ieee80211_channel_switch_disconnect' Fix it. Signed-off-by: Mauro Carvalho Chehab <[email protected]> Link: https://lore.kernel.org/r/11c1bdb861d89c93058fcfe312749b482851cbdb.1656409369.git.mchehab@kernel.org Signed-off-by: Johannes Berg <[email protected]>
2022-07-01wifi: cfg80211: fix kernel-doc warnings all over the fileMauro Carvalho Chehab1-7/+21
There are currently 17 kernel-doc warnings on this file: include/net/cfg80211.h:391: warning: Function parameter or member 'bw' not described in 'ieee80211_eht_mcs_nss_supp' include/net/cfg80211.h:437: warning: Function parameter or member 'eht_cap' not described in 'ieee80211_sband_iftype_data' include/net/cfg80211.h:507: warning: Function parameter or member 's1g' not described in 'ieee80211_sta_s1g_cap' include/net/cfg80211.h:1390: warning: Function parameter or member 'counter_offset_beacon' not described in 'cfg80211_color_change_settings' include/net/cfg80211.h:1390: warning: Function parameter or member 'counter_offset_presp' not described in 'cfg80211_color_change_settings' include/net/cfg80211.h:1430: warning: Enum value 'STATION_PARAM_APPLY_STA_TXPOWER' not described in enum 'station_parameters_apply_mask' include/net/cfg80211.h:2195: warning: Function parameter or member 'dot11MeshConnectedToAuthServer' not described in 'mesh_config' include/net/cfg80211.h:2341: warning: Function parameter or member 'short_ssid' not described in 'cfg80211_scan_6ghz_params' include/net/cfg80211.h:3328: warning: Function parameter or member 'kck_len' not described in 'cfg80211_gtk_rekey_data' include/net/cfg80211.h:3698: warning: Function parameter or member 'ftm' not described in 'cfg80211_pmsr_result' include/net/cfg80211.h:3828: warning: Function parameter or member 'global_mcast_stypes' not described in 'mgmt_frame_regs' include/net/cfg80211.h:4977: warning: Function parameter or member 'ftm' not described in 'cfg80211_pmsr_capabilities' include/net/cfg80211.h:5742: warning: Function parameter or member 'u' not described in 'wireless_dev' include/net/cfg80211.h:5742: warning: Function parameter or member 'links' not described in 'wireless_dev' include/net/cfg80211.h:5742: warning: Function parameter or member 'valid_links' not described in 'wireless_dev' include/net/cfg80211.h:6076: warning: Function parameter or member 'is_amsdu' not described in 'ieee80211_data_to_8023_exthdr' include/net/cfg80211.h:6949: warning: Function parameter or member 'sig_dbm' not described in 'cfg80211_notify_new_peer_candidate' Address them, in order to build a better documentation from this header. Signed-off-by: Mauro Carvalho Chehab <[email protected]> Link: https://lore.kernel.org/r/f6f522cdc716a01744bb0eae2186f4592976222b.1656409369.git.mchehab@kernel.org Signed-off-by: Johannes Berg <[email protected]>
2022-06-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski1-6/+10
drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c 9c5de246c1db ("net: sparx5: mdb add/del handle non-sparx5 devices") fbb89d02e33a ("net: sparx5: Allow mdb entries to both CPU and ports") Signed-off-by: Jakub Kicinski <[email protected]>
2022-06-30net, neigh: introduce interval_probe_time_ms for periodic probeYuwei Wang1-0/+1
commit ed6cd6a17896 ("net, neigh: Set lower cap for neigh_managed_work rearming") fixed a case when DELAY_PROBE_TIME is configured to 0, the processing of the system work queue hog CPU to 100%, and further more we should introduce a new option used by periodic probe Signed-off-by: Yuwei Wang <[email protected]> Signed-off-by: Paolo Abeni <[email protected]>
2022-06-29net: switchdev: add reminder near struct switchdev_notifier_fdb_infoVladimir Oltean1-0/+3
br_switchdev_fdb_notify() creates an on-stack FDB info variable, and initializes it member by member. As such, newly added fields which are not initialized by br_switchdev_fdb_notify() will contain junk bytes from the stack. Other uses of struct switchdev_notifier_fdb_info have a struct initializer which should put zeroes in the uninitialized fields. Add a reminder above the structure for future developers. Recently discussed during review. Link: https://patchwork.kernel.org/project/netdevbpf/patch/[email protected]/#24877698 Link: https://patchwork.kernel.org/project/netdevbpf/patch/[email protected]/#24912269 Signed-off-by: Vladimir Oltean <[email protected]> Reviewed-by: Ido Schimmel <[email protected]> Reviewed-by: Nikolay Aleksandrov <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>
2022-06-29net: dsa: add get_pause_stats supportOleksij Rempel1-0/+2
Add support for pause stats Signed-off-by: Oleksij Rempel <[email protected]> Reviewed-by: Vladimir Oltean <[email protected]> Reviewed-by: Florian Fainelli <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]>
2022-06-29wifi: mac80211: add gfp_t parameter to ieeee80211_obss_color_collision_notifyLorenzo Bianconi2-3/+5
Introduce the capability to specify gfp_t parameter to ieeee80211_obss_color_collision_notify routine since it runs in interrupt context in ieee80211_rx_check_bss_color_collision(). Fixes: 6d945a33f2b0a ("mac80211: introduce BSS color collision detection") Co-developed-by: Ryder Lee <[email protected]> Signed-off-by: Ryder Lee <[email protected]> Signed-off-by: Lorenzo Bianconi <[email protected]> Link: https://lore.kernel.org/r/02c990fb3fbd929c8548a656477d20d6c0427a13.1655419135.git.lorenzo@kernel.org Signed-off-by: Johannes Berg <[email protected]>
2022-06-27netfilter: nf_tables: avoid skb access on nf_stolenFlorian Westphal1-6/+10
When verdict is NF_STOLEN, the skb might have been freed. When tracing is enabled, this can result in a use-after-free: 1. access to skb->nf_trace 2. access to skb->mark 3. computation of trace id 4. dump of packet payload To avoid 1, keep a cached copy of skb->nf_trace in the trace state struct. Refresh this copy whenever verdict is != STOLEN. Avoid 2 by skipping skb->mark access if verdict is STOLEN. 3 is avoided by precomputing the trace id. Only dump the packet when verdict is not "STOLEN". Reported-by: Pablo Neira Ayuso <[email protected]> Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]>
2022-06-27net: dsa: add Renesas RZ/N1 switch tag driverClément Léger1-0/+2
The switch that is present on the Renesas RZ/N1 SoC uses a specific VLAN value followed by 6 bytes which contains forwarding configuration. Signed-off-by: Clément Léger <[email protected]> Reviewed-by: Vladimir Oltean <[email protected]> Reviewed-by: Florian Fainelli <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-06-27net: dsa: add support for ethtool get_rmon_stats()Clément Léger1-0/+3
Add support to allow dsa drivers to specify the .get_rmon_stats() operation. Signed-off-by: Clément Léger <[email protected]> Reviewed-by: Vladimir Oltean <[email protected]> Reviewed-by: Florian Fainelli <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-06-24net: helper function skb_len_addRichard Gobert1-3/+1
Move the len fields manipulation in the skbs to a helper function. There is a comment specifically requesting this and there are several other areas in the code displaying the same pattern which can be refactored. This improves code readability. Signed-off-by: Richard Gobert <[email protected]> Link: https://lore.kernel.org/r/20220622160853.GA6478@debian Signed-off-by: Jakub Kicinski <[email protected]>
2022-06-24Bonding: add per-port priority for failover re-selectionHangbin Liu2-0/+2
Add per port priority support for bonding active slave re-selection during failover. A higher number means higher priority in selection. The primary slave still has the highest priority. This option also follows the primary_reselect rules. This option could only be configured via netlink. Signed-off-by: Hangbin Liu <[email protected]> Acked-by: Jonathan Toppins <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-06-24bonding: add slave_dev field for bond_opt_valueHangbin Liu1-2/+8
Currently, bond_opt_value are mostly used for bonding option settings. If we want to set a value for slave, we need to re-alloc a string to store both slave name and vlaue, like bond_option_queue_id_set() does, which is complex and dumb. As Jon suggested, let's add a union field slave_dev for bond_opt_value, which will be benefit for future slave option setting. In function __bond_opt_init(), we will always check the extra field and set it if it's not NULL. Suggested-by: Jonathan Toppins <[email protected]> Signed-off-by: Hangbin Liu <[email protected]> Acked-by: Jonathan Toppins <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-06-24xfrm: change the type of xfrm_register_km and xfrm_unregister_kmZhengchao Shao1-2/+2
Functions xfrm_register_km and xfrm_unregister_km do always return 0, change the type of functions to void. Signed-off-by: Zhengchao Shao <[email protected]> Signed-off-by: Steffen Klassert <[email protected]>
2022-06-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski1-0/+5
No conflicts. Signed-off-by: Jakub Kicinski <[email protected]>
2022-06-23sock: redo the psock vs ULP protection checkJakub Kicinski1-0/+5
Commit 8a59f9d1e3d4 ("sock: Introduce sk->sk_prot->psock_update_sk_prot()") has moved the inet_csk_has_ulp(sk) check from sk_psock_init() to the new tcp_bpf_update_proto() function. I'm guessing that this was done to allow creating psocks for non-inet sockets. Unfortunately the destruction path for psock includes the ULP unwind, so we need to fail the sk_psock_init() itself. Otherwise if ULP is already present we'll notice that later, and call tcp_update_ulp() with the sk_proto of the ULP itself, which will most likely result in the ULP looping its callbacks. Fixes: 8a59f9d1e3d4 ("sock: Introduce sk->sk_prot->psock_update_sk_prot()") Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: John Fastabend <[email protected]> Reviewed-by: Jakub Sitnicki <[email protected]> Tested-by: Jakub Sitnicki <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Paolo Abeni <[email protected]>
2022-06-22af_unix: Remove unix_table_locks.Kuniyuki Iwashima1-1/+0
unix_table_locks are to protect the global hash table, unix_socket_table. The previous commit removed it, so let's clean up the unnecessary locks. Here is a test result on EC2 c5.9xlarge where 10 processes run concurrently in different netns and bind 100,000 sockets for each. without this series : 1m 38s with this series : 11s It is ~10x faster because the global hash table is split into 10 netns in this case. Signed-off-by: Kuniyuki Iwashima <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-06-22af_unix: Put a socket into a per-netns hash table.Kuniyuki Iwashima1-1/+0
This commit replaces the global hash table with a per-netns one and removes the global one. We now link a socket in each netns's hash table so we can save some netns comparisons when iterating through a hash bucket. Signed-off-by: Kuniyuki Iwashima <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-06-22af_unix: Define a per-netns hash table.Kuniyuki Iwashima2-0/+8
This commit adds a per netns hash table for AF_UNIX, which size is fixed as UNIX_HASH_SIZE for now. The first implementation defines a per-netns hash table as a single array of lock and list: struct unix_hashbucket { spinlock_t lock; struct hlist_head head; }; struct netns_unix { struct unix_hashbucket *hash; ... }; But, Eric pointed out memory cost that the structure has holes because of sizeof(spinlock_t), which is 4 (or more if LOCKDEP is enabled). [0] It could be expensive on a host with thousands of netns and few AF_UNIX sockets. For this reason, a per-netns hash table uses two dense arrays. struct unix_table { spinlock_t *locks; struct hlist_head *buckets; }; struct netns_unix { struct unix_table table; ... }; Note the length of the list has a significant impact rather than lock contention, so having shared locks can be an option. But, per-netns locks and lists still perform better than the global locks and per-netns lists. [1] Also, this patch adds a change so that struct netns_unix disappears from struct net if CONFIG_UNIX is disabled. [0]: https://lore.kernel.org/netdev/CANn89iLVxO5aqx16azNU7p7Z-nz5NrnM5QTqOzueVxEnkVTxyg@mail.gmail.com/ [1]: https://lore.kernel.org/netdev/[email protected]/ Signed-off-by: Kuniyuki Iwashima <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-06-22af_unix: Include the whole hash table size in UNIX_HASH_SIZE.Kuniyuki Iwashima1-3/+4
Currently, the size of AF_UNIX hash table is UNIX_HASH_SIZE * 2, the first half for bind()ed sockets and the second half for unbound ones. UNIX_HASH_SIZE * 2 is used to define the table and iterate over it. In some places, we use ARRAY_SIZE(unix_socket_table) instead of UNIX_HASH_SIZE * 2. However, we cannot use it anymore because we will allocate the hash table dynamically. Then, we would have to add UNIX_HASH_SIZE * 2 in many places, which would be troublesome. This patch adapts the UNIX_HASH_SIZE definition to include bound and unbound sockets and defines a new UNIX_HASH_MOD macro to ease calculations. Signed-off-by: Kuniyuki Iwashima <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-06-21raw: complete rcu conversionEric Dumazet1-2/+2
raw_diag_dump() can use rcu_read_lock() instead of read_lock() Now the hashinfo lock is only used from process context, in write mode only, we can convert it to a spinlock, and we do not need to block BH anymore. Signed-off-by: Eric Dumazet <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Paolo Abeni <[email protected]>
2022-06-20net: Introduce a new proto_ops ->read_skb()Cong Wang2-4/+2
Currently both splice() and sockmap use ->read_sock() to read skb from receive queue, but for sockmap we only read one entire skb at a time, so ->read_sock() is too conservative to use. Introduce a new proto_ops ->read_skb() which supports this sematic, with this we can finally pass the ownership of skb to recv actors. For non-TCP protocols, all ->read_sock() can be simply converted to ->read_skb(). Signed-off-by: Cong Wang <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Reviewed-by: John Fastabend <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2022-06-20tcp: Introduce tcp_read_skb()Cong Wang1-0/+2
This patch inroduces tcp_read_skb() based on tcp_read_sock(), a preparation for the next patch which actually introduces a new sock ops. TCP is special here, because it has tcp_read_sock() which is mainly used by splice(). tcp_read_sock() supports partial read and arbitrary offset, neither of them is needed for sockmap. Signed-off-by: Cong Wang <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Reviewed-by: Eric Dumazet <[email protected]> Reviewed-by: John Fastabend <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2022-06-20cfg80211: Indicate MLO connection info in connect and roam callbacksVeerendranath Jakkam1-23/+61
The MLO links used for connection with an MLD AP are decided by the driver in case of SME offloaded to driver. Add support for the drivers to indicate the information of links used for MLO connection in connect and roam callbacks, update the connected links information in wdev from connect/roam result sent by driver. Also, send the connected links information to userspace. Add a netlink flag attribute to indicate that userspace supports handling of MLO connection. Drivers must not do MLO connection when this flag is not set. This is to maintain backwards compatibility with older supplicant versions which doesn't have support for MLO connection. Signed-off-by: Veerendranath Jakkam <[email protected]> Signed-off-by: Johannes Berg <[email protected]>
2022-06-20wifi: mac80211: RCU-ify link STA pointersJohannes Berg1-1/+1
We need to be able to access these in a race-free way under traffic while adding/removing them, so RCU-ify the pointers. This requires passing a link_sta to a lot of functions so we don't have to do the RCU handling everywhere. Signed-off-by: Johannes Berg <[email protected]>
2022-06-20wifi: mac80211: return a beacon for a specific linkShaul Triebitz1-4/+10
Pass the link id through to the get_beacon and return the beacon for a specific link id. Signed-off-by: Shaul Triebitz <[email protected]> Signed-off-by: Johannes Berg <[email protected]>
2022-06-20wifi: mac80211: pass the link id in start/stop apShaul Triebitz1-2/+4
In start_ap and stop_ap mac80211 callbacks pass the link_id to the drivers. Signed-off-by: Shaul Triebitz <[email protected]> Signed-off-by: Johannes Berg <[email protected]>
2022-06-20wifi: cfg80211: add optional link add/remove callbacksJohannes Berg1-0/+12
Add some optional callbacks for link add/remove so that drivers can react here. Initially, I thought it would be sufficient to just create the link in start_ap etc., but it turns out that's not so simple, since there are quite a few callbacks that can be called: if they're erroneously without start_ap, things might crash. Thus it might be easier for drivers to allocate all the necessary data structures immediately, to not have to worry about it in each callback, since cfg80211 checks that the link ID is valid (has been added.) Signed-off-by: Johannes Berg <[email protected]>
2022-06-20wifi: mac80211: add sta link addition/removalJohannes Berg1-2/+11
Add the necessary infrastructure, including a new driver method, to add/remove links to/from a station. To do this, refactor the link alloc/free a bit, splitting that so we can do it without linking them, to handle failures better. Note that a station entry must be created representing an MLD or a non-MLD STA, it cannot change between the two. When representing an MLD, the 'deflink' is used for the first link, which might be removed later, in which case the memory isn't reused. Signed-off-by: Johannes Berg <[email protected]>
2022-06-20wifi: mac80211: add MLO link ID to TX frame metadataJohannes Berg1-0/+7
Take a few bits out of the control.flags to add the link ID to TX frame metadata, so drivers don't need to look it up by the address themselves. Implement that lookup where it's needed, for internal frame TX, and set it to "unspecified" for data transmissions. Signed-off-by: Johannes Berg <[email protected]>
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