kernel: bump 5.4 to 5.4.114

Manually rebased*
  generic/backport-5.4/700-v5.5-net-core-allow-fast-GRO-for-skbs-with-Ethernet-heade.patch

Added new backport*
  generic/backport-5.4/050-gro-fix-napi_gro_frags-Fast-GRO-breakage-due-to-IP-a.patch

All others updated automatically.

The new backport was included based on this[1] upstream commit that will be
mainlined soon.  This change is needed because Eric Dumazet's check for
NET_IP_ALIGN (landed in 5.4.114) causes huge slowdowns on drivers which use
napi_gro_frags().

Build system: x86_64
Build-tested: ipq806x/R7800
Run-tested: ipq806x/R7800

No dmesg regressions, everything functional

*Credit to Alexander Lobakin
1. https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=7ad18ff6449cbd6beb26b53128ddf56d2685aa93

Signed-off-by: John Audia <graysky@archlinux.us>

9 files changed, 98 insertions, 23 deletions

diff --git a/target/linux/generic/backport-5.4/050-gro-fix-napi_gro_frags-Fast-GRO-breakage-due-to-IP-a.patch b/target/linux/generic/backport-5.4/050-gro-fix-napi_gro_frags-Fast-GRO-breakage-due-to-IP-a.patch
new file mode 100644
index 0000000000..17e9e34589
--- /dev/null
+++ b/target/linux/generic/backport-5.4/050-gro-fix-napi_gro_frags-Fast-GRO-breakage-due-to-IP-a.patch
@@ -0,0 +1,75 @@
+From 3007b05df4301aad179acc6ca1c3645785576df6 Mon Sep 17 00:00:00 2001
+From: Alexander Lobakin <alobakin@pm.me>
+Date: Mon, 19 Apr 2021 12:53:06 +0000
+Subject: gro: fix napi_gro_frags() Fast GRO breakage due to IP
+ alignment check
+
+Commit 7ad18ff6449cbd6beb26b53128ddf56d2685aa93 upstream.
+
+Commit 38ec4944b593 ("gro: ensure frag0 meets IP header alignment")
+did the right thing, but missed the fact that napi_gro_frags() logics
+calls for skb_gro_reset_offset() *before* pulling Ethernet header
+to the skb linear space.
+That said, the introduced check for frag0 address being aligned to 4
+always fails for it as Ethernet header is obviously 14 bytes long,
+and in case with NET_IP_ALIGN its start is not aligned to 4.
+
+Fix this by adding @nhoff argument to skb_gro_reset_offset() which
+tells if an IP header is placed right at the start of frag0 or not.
+This restores Fast GRO for napi_gro_frags() that became very slow
+after the mentioned commit, and preserves the introduced check to
+avoid silent unaligned accesses.
+
+From v1 [0]:
+ - inline tiny skb_gro_reset_offset() to let the code be optimized
+   more efficively (esp. for the !NET_IP_ALIGN case) (Eric);
+ - pull in Reviewed-by from Eric.
+
+[0] https://lore.kernel.org/netdev/20210418114200.5839-1-alobakin@pm.me
+
+Fixes: 38ec4944b593 ("gro: ensure frag0 meets IP header alignment")
+Reviewed-by: Eric Dumazet <edumazet@google.com>
+Signed-off-by: Alexander Lobakin <alobakin@pm.me>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ net/core/dev.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -5395,7 +5395,7 @@ static struct list_head *gro_list_prepar
+ 	return head;
+ }
+ 
+-static void skb_gro_reset_offset(struct sk_buff *skb)
++static inline void skb_gro_reset_offset(struct sk_buff *skb, u32 nhoff)
+ {
+ 	const struct skb_shared_info *pinfo = skb_shinfo(skb);
+ 	const skb_frag_t *frag0 = &pinfo->frags[0];
+@@ -5407,7 +5407,7 @@ static void skb_gro_reset_offset(struct
+ 	if (skb_mac_header(skb) == skb_tail_pointer(skb) &&
+ 	    pinfo->nr_frags &&
+ 	    !PageHighMem(skb_frag_page(frag0)) &&
+-	    (!NET_IP_ALIGN || !(skb_frag_off(frag0) & 3))) {
++	    (!NET_IP_ALIGN || !((skb_frag_off(frag0) + nhoff) & 3))) {
+ 		NAPI_GRO_CB(skb)->frag0 = skb_frag_address(frag0);
+ 		NAPI_GRO_CB(skb)->frag0_len = min_t(unsigned int,
+ 						    skb_frag_size(frag0),
+@@ -5640,7 +5640,7 @@ gro_result_t napi_gro_receive(struct nap
+ 	skb_mark_napi_id(skb, napi);
+ 	trace_napi_gro_receive_entry(skb);
+ 
+-	skb_gro_reset_offset(skb);
++	skb_gro_reset_offset(skb, 0);
+ 
+ 	ret = napi_skb_finish(napi, skb, dev_gro_receive(napi, skb));
+ 	trace_napi_gro_receive_exit(ret);
+@@ -5733,7 +5733,7 @@ static struct sk_buff *napi_frags_skb(st
+ 	napi->skb = NULL;
+ 
+ 	skb_reset_mac_header(skb);
+-	skb_gro_reset_offset(skb);
++	skb_gro_reset_offset(skb, hlen);
+ 
+ 	if (unlikely(skb_gro_header_hard(skb, hlen))) {
+ 		eth = skb_gro_header_slow(skb, hlen, 0);
diff --git a/target/linux/generic/backport-5.4/700-v5.5-net-core-allow-fast-GRO-for-skbs-with-Ethernet-heade.patch b/target/linux/generic/backport-5.4/700-v5.5-net-core-allow-fast-GRO-for-skbs-with-Ethernet-heade.patch
index a79c860187..a942a53809 100644
--- a/target/linux/generic/backport-5.4/700-v5.5-net-core-allow-fast-GRO-for-skbs-with-Ethernet-heade.patch
+++ b/target/linux/generic/backport-5.4/700-v5.5-net-core-allow-fast-GRO-for-skbs-with-Ethernet-heade.patch
@@ -66,13 +66,13 @@ Signed-off-by: David S. Miller <davem@davemloft.net>
 
 --- a/net/core/dev.c
 +++ b/net/core/dev.c
-@@ -5404,8 +5404,7 @@ static void skb_gro_reset_offset(struct
+@@ -5404,8 +5404,7 @@ static inline void skb_gro_reset_offset(
  	NAPI_GRO_CB(skb)->frag0 = NULL;
  	NAPI_GRO_CB(skb)->frag0_len = 0;
  
 -	if (skb_mac_header(skb) == skb_tail_pointer(skb) &&
 -	    pinfo->nr_frags &&
 +	if (!skb_headlen(skb) && pinfo->nr_frags &&
- 	    !PageHighMem(skb_frag_page(frag0))) {
+ 	    !PageHighMem(skb_frag_page(frag0)) &&
+ 	    (!NET_IP_ALIGN || !((skb_frag_off(frag0) + nhoff) & 3))) {
  		NAPI_GRO_CB(skb)->frag0 = skb_frag_address(frag0);
- 		NAPI_GRO_CB(skb)->frag0_len = min_t(unsigned int,
diff --git a/target/linux/generic/backport-5.4/747-v5.5-net-dsa-mv88e6xxx-Add-support-for-port-mirroring.patch b/target/linux/generic/backport-5.4/747-v5.5-net-dsa-mv88e6xxx-Add-support-for-port-mirroring.patch
index a23f45075f..30ff8aeab6 100644
--- a/target/linux/generic/backport-5.4/747-v5.5-net-dsa-mv88e6xxx-Add-support-for-port-mirroring.patch
+++ b/target/linux/generic/backport-5.4/747-v5.5-net-dsa-mv88e6xxx-Add-support-for-port-mirroring.patch
@@ -25,7 +25,7 @@ Signed-off-by: David S. Miller <davem@davemloft.net>
 
 --- a/drivers/net/dsa/mv88e6xxx/chip.c
 +++ b/drivers/net/dsa/mv88e6xxx/chip.c
-@@ -4926,6 +4926,80 @@ static int mv88e6xxx_port_mdb_del(struct
+@@ -4922,6 +4922,80 @@ static int mv88e6xxx_port_mdb_del(struct
  	return err;
  }
  
@@ -106,7 +106,7 @@ Signed-off-by: David S. Miller <davem@davemloft.net>
  static int mv88e6xxx_port_egress_floods(struct dsa_switch *ds, int port,
  					 bool unicast, bool multicast)
  {
-@@ -4980,6 +5054,8 @@ static const struct dsa_switch_ops mv88e
+@@ -4976,6 +5050,8 @@ static const struct dsa_switch_ops mv88e
  	.port_mdb_prepare       = mv88e6xxx_port_mdb_prepare,
  	.port_mdb_add           = mv88e6xxx_port_mdb_add,
  	.port_mdb_del           = mv88e6xxx_port_mdb_del,
diff --git a/target/linux/generic/backport-5.4/748-v5.5-net-dsa-mv88e6xxx-fix-broken-if-statement-because-of.patch b/target/linux/generic/backport-5.4/748-v5.5-net-dsa-mv88e6xxx-fix-broken-if-statement-because-of.patch
index 37e7a7f2a9..d8ec1240f7 100644
--- a/target/linux/generic/backport-5.4/748-v5.5-net-dsa-mv88e6xxx-fix-broken-if-statement-because-of.patch
+++ b/target/linux/generic/backport-5.4/748-v5.5-net-dsa-mv88e6xxx-fix-broken-if-statement-because-of.patch
@@ -19,7 +19,7 @@ Signed-off-by: David S. Miller <davem@davemloft.net>
 
 --- a/drivers/net/dsa/mv88e6xxx/chip.c
 +++ b/drivers/net/dsa/mv88e6xxx/chip.c
-@@ -4993,7 +4993,7 @@ static void mv88e6xxx_port_mirror_del(st
+@@ -4989,7 +4989,7 @@ static void mv88e6xxx_port_mirror_del(st
  		if (chip->info->ops->set_egress_port(chip,
  						     direction,
  						     dsa_upstream_port(ds,
diff --git a/target/linux/generic/pending-5.4/600-netfilter_conntrack_flush.patch b/target/linux/generic/pending-5.4/600-netfilter_conntrack_flush.patch
index 14d3a37a8c..eaf8c78052 100644
--- a/target/linux/generic/pending-5.4/600-netfilter_conntrack_flush.patch
+++ b/target/linux/generic/pending-5.4/600-netfilter_conntrack_flush.patch
@@ -17,7 +17,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  #include <net/net_namespace.h>
  #ifdef CONFIG_SYSCTL
  #include <linux/sysctl.h>
-@@ -454,6 +455,56 @@ static int ct_cpu_seq_show(struct seq_fi
+@@ -455,6 +456,56 @@ static int ct_cpu_seq_show(struct seq_fi
  	return 0;
  }
  
@@ -74,7 +74,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  static const struct seq_operations ct_cpu_seq_ops = {
  	.start	= ct_cpu_seq_start,
  	.next	= ct_cpu_seq_next,
-@@ -467,8 +518,9 @@ static int nf_conntrack_standalone_init_
+@@ -468,8 +519,9 @@ static int nf_conntrack_standalone_init_
  	kuid_t root_uid;
  	kgid_t root_gid;
  
diff --git a/target/linux/generic/pending-5.4/613-netfilter_optional_tcp_window_check.patch b/target/linux/generic/pending-5.4/613-netfilter_optional_tcp_window_check.patch
index 2881337724..0735f8d20d 100644
--- a/target/linux/generic/pending-5.4/613-netfilter_optional_tcp_window_check.patch
+++ b/target/linux/generic/pending-5.4/613-netfilter_optional_tcp_window_check.patch
@@ -49,7 +49,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  static bool enable_hooks __read_mostly;
  MODULE_PARM_DESC(enable_hooks, "Always enable conntrack hooks");
  module_param(enable_hooks, bool, 0000);
-@@ -649,6 +652,7 @@ enum nf_ct_sysctl_index {
+@@ -650,6 +653,7 @@ enum nf_ct_sysctl_index {
  	NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM,
  #endif
  
@@ -57,7 +57,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	__NF_SYSCTL_CT_LAST_SYSCTL,
  };
  
-@@ -975,6 +979,13 @@ static struct ctl_table nf_ct_sysctl_tab
+@@ -976,6 +980,13 @@ static struct ctl_table nf_ct_sysctl_tab
  		.proc_handler   = proc_dointvec_jiffies,
  	},
  #endif
diff --git a/target/linux/generic/pending-5.4/680-NET-skip-GRO-for-foreign-MAC-addresses.patch b/target/linux/generic/pending-5.4/680-NET-skip-GRO-for-foreign-MAC-addresses.patch
index ac7a24a049..d8d993fbd8 100644
--- a/target/linux/generic/pending-5.4/680-NET-skip-GRO-for-foreign-MAC-addresses.patch
+++ b/target/linux/generic/pending-5.4/680-NET-skip-GRO-for-foreign-MAC-addresses.patch
@@ -32,7 +32,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	__u16			tc_index;	/* traffic control index */
 --- a/net/core/dev.c
 +++ b/net/core/dev.c
-@@ -5469,6 +5469,9 @@ static enum gro_result dev_gro_receive(s
+@@ -5470,6 +5470,9 @@ static enum gro_result dev_gro_receive(s
  	int same_flow;
  	int grow;
  
@@ -42,7 +42,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	if (netif_elide_gro(skb->dev))
  		goto normal;
  
-@@ -7264,6 +7267,48 @@ static void __netdev_adjacent_dev_unlink
+@@ -7265,6 +7268,48 @@ static void __netdev_adjacent_dev_unlink
  					   &upper_dev->adj_list.lower);
  }
  
@@ -91,7 +91,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  static int __netdev_upper_dev_link(struct net_device *dev,
  				   struct net_device *upper_dev, bool master,
  				   void *upper_priv, void *upper_info,
-@@ -7314,6 +7359,7 @@ static int __netdev_upper_dev_link(struc
+@@ -7315,6 +7360,7 @@ static int __netdev_upper_dev_link(struc
  	if (ret)
  		return ret;
  
@@ -99,7 +99,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	ret = call_netdevice_notifiers_info(NETDEV_CHANGEUPPER,
  					    &changeupper_info.info);
  	ret = notifier_to_errno(ret);
-@@ -7407,6 +7453,7 @@ void netdev_upper_dev_unlink(struct net_
+@@ -7408,6 +7454,7 @@ void netdev_upper_dev_unlink(struct net_
  
  	__netdev_adjacent_dev_unlink_neighbour(dev, upper_dev);
  
@@ -107,7 +107,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	call_netdevice_notifiers_info(NETDEV_CHANGEUPPER,
  				      &changeupper_info.info);
  
-@@ -8137,6 +8184,7 @@ int dev_set_mac_address(struct net_devic
+@@ -8138,6 +8185,7 @@ int dev_set_mac_address(struct net_devic
  	if (err)
  		return err;
  	dev->addr_assign_type = NET_ADDR_SET;
diff --git a/target/linux/generic/pending-5.4/690-net-add-support-for-threaded-NAPI-polling.patch b/target/linux/generic/pending-5.4/690-net-add-support-for-threaded-NAPI-polling.patch
index a6ef897869..a3b71b1896 100644
--- a/target/linux/generic/pending-5.4/690-net-add-support-for-threaded-NAPI-polling.patch
+++ b/target/linux/generic/pending-5.4/690-net-add-support-for-threaded-NAPI-polling.patch
@@ -95,7 +95,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  
  static int netif_rx_internal(struct sk_buff *skb);
  static int call_netdevice_notifiers_info(unsigned long val,
-@@ -5911,6 +5912,11 @@ void __napi_schedule(struct napi_struct
+@@ -5912,6 +5913,11 @@ void __napi_schedule(struct napi_struct
  {
  	unsigned long flags;
  
@@ -107,7 +107,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	local_irq_save(flags);
  	____napi_schedule(this_cpu_ptr(&softnet_data), n);
  	local_irq_restore(flags);
-@@ -5958,6 +5964,11 @@ EXPORT_SYMBOL(napi_schedule_prep);
+@@ -5959,6 +5965,11 @@ EXPORT_SYMBOL(napi_schedule_prep);
   */
  void __napi_schedule_irqoff(struct napi_struct *n)
  {
@@ -119,7 +119,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	____napi_schedule(this_cpu_ptr(&softnet_data), n);
  }
  EXPORT_SYMBOL(__napi_schedule_irqoff);
-@@ -6219,9 +6230,89 @@ static void init_gro_hash(struct napi_st
+@@ -6220,9 +6231,89 @@ static void init_gro_hash(struct napi_st
  	napi->gro_bitmask = 0;
  }
  
@@ -209,7 +209,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	INIT_LIST_HEAD(&napi->poll_list);
  	hrtimer_init(&napi->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_PINNED);
  	napi->timer.function = napi_watchdog;
-@@ -6238,6 +6329,7 @@ void netif_napi_add(struct net_device *d
+@@ -6239,6 +6330,7 @@ void netif_napi_add(struct net_device *d
  #ifdef CONFIG_NETPOLL
  	napi->poll_owner = -1;
  #endif
@@ -217,7 +217,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	set_bit(NAPI_STATE_SCHED, &napi->state);
  	set_bit(NAPI_STATE_NPSVC, &napi->state);
  	list_add_rcu(&napi->dev_list, &dev->napi_list);
-@@ -6278,6 +6370,7 @@ static void flush_gro_hash(struct napi_s
+@@ -6279,6 +6371,7 @@ static void flush_gro_hash(struct napi_s
  void netif_napi_del(struct napi_struct *napi)
  {
  	might_sleep();
@@ -225,7 +225,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	if (napi_hash_del(napi))
  		synchronize_net();
  	list_del_init(&napi->dev_list);
-@@ -6290,50 +6383,18 @@ EXPORT_SYMBOL(netif_napi_del);
+@@ -6291,50 +6384,18 @@ EXPORT_SYMBOL(netif_napi_del);
  
  static int napi_poll(struct napi_struct *n, struct list_head *repoll)
  {
@@ -280,7 +280,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  
  	/* Some drivers may have called napi_schedule
  	 * prior to exhausting their budget.
-@@ -10313,6 +10374,10 @@ static int __init net_dev_init(void)
+@@ -10314,6 +10375,10 @@ static int __init net_dev_init(void)
  		sd->backlog.weight = weight_p;
  	}
  
diff --git a/target/linux/generic/pending-5.4/768-net-dsa-mv88e6xxx-Request-assisted-learning-on-CPU-port.patch b/target/linux/generic/pending-5.4/768-net-dsa-mv88e6xxx-Request-assisted-learning-on-CPU-port.patch
index cb421f164b..653a782f52 100644
--- a/target/linux/generic/pending-5.4/768-net-dsa-mv88e6xxx-Request-assisted-learning-on-CPU-port.patch
+++ b/target/linux/generic/pending-5.4/768-net-dsa-mv88e6xxx-Request-assisted-learning-on-CPU-port.patch
@@ -17,7 +17,7 @@ Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
 
 --- a/drivers/net/dsa/mv88e6xxx/chip.c
 +++ b/drivers/net/dsa/mv88e6xxx/chip.c
-@@ -5080,6 +5080,7 @@ static int mv88e6xxx_register_switch(str
+@@ -5076,6 +5076,7 @@ static int mv88e6xxx_register_switch(str
  	ds->ops = &mv88e6xxx_switch_ops;
  	ds->ageing_time_min = chip->info->age_time_coeff;
  	ds->ageing_time_max = chip->info->age_time_coeff * U8_MAX;