Merge tag 'net-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:

 - Add redirect_neigh() BPF packet redirect helper, allowing to limit
   stack traversal in common container configs and improving TCP
   back-pressure.

   Daniel reports ~10Gbps => ~15Gbps single stream TCP performance gain.

 - Expand netlink policy support and improve policy export to user
   space. (Ge)netlink core performs request validation according to
   declared policies. Expand the expressiveness of those policies
   (min/max length and bitmasks). Allow dumping policies for particular
   commands. This is used for feature discovery by user space (instead
   of kernel version parsing or trial and error).

 - Support IGMPv3/MLDv2 multicast listener discovery protocols in
   bridge.

 - Allow more than 255 IPv4 multicast interfaces.

 - Add support for Type of Service (ToS) reflection in SYN/SYN-ACK
   packets of TCPv6.

 - In Multi-patch TCP (MPTCP) support concurrent transmission of data on
   multiple subflows in a load balancing scenario. Enhance advertising
   addresses via the RM_ADDR/ADD_ADDR options.

 - Support SMC-Dv2 version of SMC, which enables multi-subnet
   deployments.

 - Allow more calls to same peer in RxRPC.

 - Support two new Controller Area Network (CAN) protocols - CAN-FD and
   ISO 15765-2:2016.

 - Add xfrm/IPsec compat layer, solving the 32bit user space on 64bit
   kernel problem.

 - Add TC actions for implementing MPLS L2 VPNs.

 - Improve nexthop code - e.g. handle various corner cases when nexthop
   objects are removed from groups better, skip unnecessary
   notifications and make it easier to offload nexthops into HW by
   converting to a blocking notifier.

 - Support adding and consuming TCP header options by BPF programs,
   opening the doors for easy experimental and deployment-specific TCP
   option use.

 - Reorganize TCP congestion control (CC) initialization to simplify
   life of TCP CC implemented in BPF.

 - Add support for shipping BPF programs with the kernel and loading
   them early on boot via the User Mode Driver mechanism, hence reusing
   all the user space infra we have.

 - Support sleepable BPF programs, initially targeting LSM and tracing.

 - Add bpf_d_path() helper for returning full path for given 'struct
   path'.

 - Make bpf_tail_call compatible with bpf-to-bpf calls.

 - Allow BPF programs to call map_update_elem on sockmaps.

 - Add BPF Type Format (BTF) support for type and enum discovery, as
   well as support for using BTF within the kernel itself (current use
   is for pretty printing structures).

 - Support listing and getting information about bpf_links via the bpf
   syscall.

 - Enhance kernel interfaces around NIC firmware update. Allow
   specifying overwrite mask to control if settings etc. are reset
   during update; report expected max time operation may take to users;
   support firmware activation without machine reboot incl. limits of
   how much impact reset may have (e.g. dropping link or not).

 - Extend ethtool configuration interface to report IEEE-standard
   counters, to limit the need for per-vendor logic in user space.

 - Adopt or extend devlink use for debug, monitoring, fw update in many
   drivers (dsa loop, ice, ionic, sja1105, qed, mlxsw, mv88e6xxx,
   dpaa2-eth).

 - In mlxsw expose critical and emergency SFP module temperature alarms.
   Refactor port buffer handling to make the defaults more suitable and
   support setting these values explicitly via the DCBNL interface.

 - Add XDP support for Intel's igb driver.

 - Support offloading TC flower classification and filtering rules to
   mscc_ocelot switches.

 - Add PTP support for Marvell Octeontx2 and PP2.2 hardware, as well as
   fixed interval period pulse generator and one-step timestamping in
   dpaa-eth.

 - Add support for various auth offloads in WiFi APs, e.g. SAE (WPA3)
   offload.

 - Add Lynx PHY/PCS MDIO module, and convert various drivers which have
   this HW to use it. Convert mvpp2 to split PCS.

 - Support Marvell Prestera 98DX3255 24-port switch ASICs, as well as
   7-port Mediatek MT7531 IP.

 - Add initial support for QCA6390 and IPQ6018 in ath11k WiFi driver,
   and wcn3680 support in wcn36xx.

 - Improve performance for packets which don't require much offloads on
   recent Mellanox NICs by 20% by making multiple packets share a
   descriptor entry.

 - Move chelsio inline crypto drivers (for TLS and IPsec) from the
   crypto subtree to drivers/net. Move MDIO drivers out of the phy
   directory.

 - Clean up a lot of W=1 warnings, reportedly the actively developed
   subsections of networking drivers should now build W=1 warning free.

 - Make sure drivers don't use in_interrupt() to dynamically adapt their
   code. Convert tasklets to use new tasklet_setup API (sadly this
   conversion is not yet complete).

* tag 'net-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2583 commits)
  Revert "bpfilter: Fix build error with CONFIG_BPFILTER_UMH"
  net, sockmap: Don't call bpf_prog_put() on NULL pointer
  bpf, selftest: Fix flaky tcp_hdr_options test when adding addr to lo
  bpf, sockmap: Add locking annotations to iterator
  netfilter: nftables: allow re-computing sctp CRC-32C in 'payload' statements
  net: fix pos incrementment in ipv6_route_seq_next
  net/smc: fix invalid return code in smcd_new_buf_create()
  net/smc: fix valid DMBE buffer sizes
  net/smc: fix use-after-free of delayed events
  bpfilter: Fix build error with CONFIG_BPFILTER_UMH
  cxgb4/ch_ipsec: Replace the module name to ch_ipsec from chcr
  net: sched: Fix suspicious RCU usage while accessing tcf_tunnel_info
  bpf: Fix register equivalence tracking.
  rxrpc: Fix loss of final ack on shutdown
  rxrpc: Fix bundle counting for exclusive connections
  netfilter: restore NF_INET_NUMHOOKS
  ibmveth: Identify ingress large send packets.
  ibmveth: Switch order of ibmveth_helper calls.
  cxgb4: handle 4-tuple PEDIT to NAT mode translation
  selftests: Add VRF route leaking tests
  ...

4 files changed, 16 insertions, 28 deletions

diff --git a/drivers/net/wireless/intersil/hostap/hostap.h b/drivers/net/wireless/intersil/hostap/hostap.h
index 8130d29c7989..c4b81ff7d7e4 100644
--- a/drivers/net/wireless/intersil/hostap/hostap.h
+++ b/drivers/net/wireless/intersil/hostap/hostap.h
@@ -8,8 +8,10 @@
 #include "hostap_wlan.h"
 #include "hostap_ap.h"
 
-static const long freq_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
-				  2447, 2452, 2457, 2462, 2467, 2472, 2484 };
+static const long __maybe_unused freq_list[] = {
+	2412, 2417, 2422, 2427, 2432, 2437, 2442,
+	2447, 2452, 2457, 2462, 2467, 2472, 2484
+};
 #define FREQ_COUNT ARRAY_SIZE(freq_list)
 
 /* hostap.c */
diff --git a/drivers/net/wireless/intersil/hostap/hostap_ap.c b/drivers/net/wireless/intersil/hostap/hostap_ap.c
index 3ec46f48cfde..8bcc1cdcb75b 100644
--- a/drivers/net/wireless/intersil/hostap/hostap_ap.c
+++ b/drivers/net/wireless/intersil/hostap/hostap_ap.c
@@ -1504,7 +1504,7 @@ static void handle_assoc(local_info_t *local, struct sk_buff *skb,
 	u16 resp = WLAN_STATUS_SUCCESS;
 	struct sta_info *sta = NULL;
 	int send_deauth = 0;
-	char *txt = "";
+	char __always_unused *txt = "";
 	u8 prev_ap[ETH_ALEN];
 
 	left = len = skb->len - IEEE80211_MGMT_HDR_LEN;
diff --git a/drivers/net/wireless/intersil/hostap/hostap_hw.c b/drivers/net/wireless/intersil/hostap/hostap_hw.c
index b6c497ce12e1..22cfb6452644 100644
--- a/drivers/net/wireless/intersil/hostap/hostap_hw.c
+++ b/drivers/net/wireless/intersil/hostap/hostap_hw.c
@@ -320,12 +320,6 @@ static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0,
 	iface = netdev_priv(dev);
 	local = iface->local;
 
-	if (in_interrupt()) {
-		printk(KERN_DEBUG "%s: hfa384x_cmd called from interrupt "
-		       "context\n", dev->name);
-		return -1;
-	}
-
 	if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) {
 		printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n",
 		       dev->name);
@@ -1560,12 +1554,6 @@ static void prism2_hw_reset(struct net_device *dev)
 	iface = netdev_priv(dev);
 	local = iface->local;
 
-	if (in_interrupt()) {
-		printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called "
-		       "in interrupt context\n", dev->name);
-		return;
-	}
-
 	if (local->hw_downloading)
 		return;
 
@@ -1803,7 +1791,7 @@ static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev)
 	struct hfa384x_tx_frame txdesc;
 	struct hostap_skb_tx_data *meta;
 	int hdr_len, data_len, idx, res, ret = -1;
-	u16 tx_control, fc;
+	u16 tx_control;
 
 	iface = netdev_priv(dev);
 	local = iface->local;
@@ -1826,7 +1814,6 @@ static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev)
 	/* skb->data starts with txdesc->frame_control */
 	hdr_len = 24;
 	skb_copy_from_linear_data(skb, &txdesc.frame_control, hdr_len);
- 	fc = le16_to_cpu(txdesc.frame_control);
 	if (ieee80211_is_data(txdesc.frame_control) &&
 	    ieee80211_has_a4(txdesc.frame_control) &&
 	    skb->len >= 30) {
@@ -2083,9 +2070,9 @@ static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb)
 
 
 /* Called only as a tasklet (software IRQ) */
-static void hostap_rx_tasklet(unsigned long data)
+static void hostap_rx_tasklet(struct tasklet_struct *t)
 {
-	local_info_t *local = (local_info_t *) data;
+	local_info_t *local = from_tasklet(local, t, rx_tasklet);
 	struct sk_buff *skb;
 
 	while ((skb = skb_dequeue(&local->rx_list)) != NULL)
@@ -2288,9 +2275,9 @@ static void prism2_tx_ev(local_info_t *local)
 
 
 /* Called only as a tasklet (software IRQ) */
-static void hostap_sta_tx_exc_tasklet(unsigned long data)
+static void hostap_sta_tx_exc_tasklet(struct tasklet_struct *t)
 {
-	local_info_t *local = (local_info_t *) data;
+	local_info_t *local = from_tasklet(local, t, sta_tx_exc_tasklet);
 	struct sk_buff *skb;
 
 	while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) {
@@ -2390,9 +2377,9 @@ static void prism2_txexc(local_info_t *local)
 
 
 /* Called only as a tasklet (software IRQ) */
-static void hostap_info_tasklet(unsigned long data)
+static void hostap_info_tasklet(struct tasklet_struct *t)
 {
-	local_info_t *local = (local_info_t *) data;
+	local_info_t *local = from_tasklet(local, t, info_tasklet);
 	struct sk_buff *skb;
 
 	while ((skb = skb_dequeue(&local->info_list)) != NULL) {
@@ -2469,9 +2456,9 @@ static void prism2_info(local_info_t *local)
 
 
 /* Called only as a tasklet (software IRQ) */
-static void hostap_bap_tasklet(unsigned long data)
+static void hostap_bap_tasklet(struct tasklet_struct *t)
 {
-	local_info_t *local = (local_info_t *) data;
+	local_info_t *local = from_tasklet(local, t, bap_tasklet);
 	struct net_device *dev = local->dev;
 	u16 ev;
 	int frames = 30;
@@ -3183,7 +3170,7 @@ prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx,
 	/* Initialize tasklets for handling hardware IRQ related operations
 	 * outside hw IRQ handler */
 #define HOSTAP_TASKLET_INIT(q, f, d) \
-do { memset((q), 0, sizeof(*(q))); (q)->func = (f); (q)->data = (d); } \
+do { memset((q), 0, sizeof(*(q))); (q)->func = (void(*)(unsigned long))(f); } \
 while (0)
 	HOSTAP_TASKLET_INIT(&local->bap_tasklet, hostap_bap_tasklet,
 			    (unsigned long) local);
diff --git a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c
index 1ca9731d9b14..514c7b01dbf6 100644
--- a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c
+++ b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c
@@ -1955,7 +1955,7 @@ static inline int prism2_translate_scan(local_info_t *local,
 					char *buffer, int buflen)
 {
 	struct hfa384x_hostscan_result *scan;
-	int entry, hostscan;
+	int entry;
 	char *current_ev = buffer;
 	char *end_buf = buffer + buflen;
 	struct list_head *ptr;
@@ -1968,7 +1968,6 @@ static inline int prism2_translate_scan(local_info_t *local,
 		bss->included = 0;
 	}
 
-	hostscan = local->last_scan_type == PRISM2_HOSTSCAN;
 	for (entry = 0; entry < local->last_scan_results_count; entry++) {
 		int found = 0;
 		scan = &local->last_scan_results[entry];