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797d46c34d
Move stmmac backport fix patches from ipq806x to generic backport directory as they got merged upstream and they fix wide performance regression. This will eventually cause performance increase on any user of the stmmac driver. Generic patch automatically refreshed with make target/linux/refresh. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
152 lines
4.0 KiB
Diff
152 lines
4.0 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
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Subject: net: replace GRO optimization patch with a new one that supports VLANs/bridges with different MAC addresses
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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include/linux/netdevice.h | 2 ++
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include/linux/skbuff.h | 3 ++-
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net/core/dev.c | 48 +++++++++++++++++++++++++++++++++++++++++++++++
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net/ethernet/eth.c | 18 +++++++++++++++++-
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4 files changed, 69 insertions(+), 2 deletions(-)
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--- a/include/linux/netdevice.h
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+++ b/include/linux/netdevice.h
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@@ -2157,6 +2157,8 @@ struct net_device {
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struct netdev_hw_addr_list mc;
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struct netdev_hw_addr_list dev_addrs;
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+ unsigned char local_addr_mask[MAX_ADDR_LEN];
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+
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#ifdef CONFIG_SYSFS
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struct kset *queues_kset;
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#endif
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--- a/include/linux/skbuff.h
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+++ b/include/linux/skbuff.h
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@@ -972,6 +972,7 @@ struct sk_buff {
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#ifdef CONFIG_IPV6_NDISC_NODETYPE
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__u8 ndisc_nodetype:2;
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#endif
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+ __u8 gro_skip:1;
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__u8 ipvs_property:1;
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__u8 inner_protocol_type:1;
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--- a/net/core/gro.c
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+++ b/net/core/gro.c
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@@ -491,6 +491,9 @@ static enum gro_result dev_gro_receive(s
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int same_flow;
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int grow;
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+ if (skb->gro_skip)
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+ goto normal;
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+
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if (netif_elide_gro(skb->dev))
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goto normal;
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--- a/net/core/dev.c
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+++ b/net/core/dev.c
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@@ -7625,6 +7625,48 @@ static void __netdev_adjacent_dev_unlink
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&upper_dev->adj_list.lower);
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}
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+static void __netdev_addr_mask(unsigned char *mask, const unsigned char *addr,
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+ struct net_device *dev)
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+{
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+ int i;
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+
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+ for (i = 0; i < dev->addr_len; i++)
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+ mask[i] |= addr[i] ^ dev->dev_addr[i];
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+}
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+
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+static void __netdev_upper_mask(unsigned char *mask, struct net_device *dev,
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+ struct net_device *lower)
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+{
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+ struct net_device *cur;
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+ struct list_head *iter;
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+
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+ netdev_for_each_upper_dev_rcu(dev, cur, iter) {
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+ __netdev_addr_mask(mask, cur->dev_addr, lower);
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+ __netdev_upper_mask(mask, cur, lower);
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+ }
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+}
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+
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+static void __netdev_update_addr_mask(struct net_device *dev)
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+{
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+ unsigned char mask[MAX_ADDR_LEN];
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+ struct net_device *cur;
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+ struct list_head *iter;
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+
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+ memset(mask, 0, sizeof(mask));
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+ __netdev_upper_mask(mask, dev, dev);
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+ memcpy(dev->local_addr_mask, mask, dev->addr_len);
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+
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+ netdev_for_each_lower_dev(dev, cur, iter)
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+ __netdev_update_addr_mask(cur);
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+}
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+
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+static void netdev_update_addr_mask(struct net_device *dev)
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+{
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+ rcu_read_lock();
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+ __netdev_update_addr_mask(dev);
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+ rcu_read_unlock();
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+}
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+
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static int __netdev_upper_dev_link(struct net_device *dev,
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struct net_device *upper_dev, bool master,
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void *upper_priv, void *upper_info,
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@@ -7676,6 +7718,7 @@ static int __netdev_upper_dev_link(struc
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if (ret)
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return ret;
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+ netdev_update_addr_mask(dev);
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ret = call_netdevice_notifiers_info(NETDEV_CHANGEUPPER,
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&changeupper_info.info);
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ret = notifier_to_errno(ret);
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@@ -7772,6 +7815,7 @@ static void __netdev_upper_dev_unlink(st
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__netdev_adjacent_dev_unlink_neighbour(dev, upper_dev);
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+ netdev_update_addr_mask(dev);
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call_netdevice_notifiers_info(NETDEV_CHANGEUPPER,
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&changeupper_info.info);
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@@ -8824,6 +8868,7 @@ int dev_set_mac_address(struct net_devic
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if (err)
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return err;
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dev->addr_assign_type = NET_ADDR_SET;
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+ netdev_update_addr_mask(dev);
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call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
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add_device_randomness(dev->dev_addr, dev->addr_len);
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return 0;
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--- a/net/ethernet/eth.c
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+++ b/net/ethernet/eth.c
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@@ -143,6 +143,18 @@ u32 eth_get_headlen(const struct net_dev
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}
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EXPORT_SYMBOL(eth_get_headlen);
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+static inline bool
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+eth_check_local_mask(const void *addr1, const void *addr2, const void *mask)
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+{
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+ const u16 *a1 = addr1;
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+ const u16 *a2 = addr2;
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+ const u16 *m = mask;
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+
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+ return (((a1[0] ^ a2[0]) & ~m[0]) |
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+ ((a1[1] ^ a2[1]) & ~m[1]) |
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+ ((a1[2] ^ a2[2]) & ~m[2]));
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+}
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+
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/**
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* eth_type_trans - determine the packet's protocol ID.
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* @skb: received socket data
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@@ -174,6 +186,10 @@ __be16 eth_type_trans(struct sk_buff *sk
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} else {
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skb->pkt_type = PACKET_OTHERHOST;
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}
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+
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+ if (eth_check_local_mask(eth->h_dest, dev->dev_addr,
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+ dev->local_addr_mask))
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+ skb->gro_skip = 1;
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}
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/*
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