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| author | Michael Bestas <mkbestas@lineageos.org> | 2020-03-08 00:00:18 +0200 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2020-03-08 00:00:18 +0200 |
| commit | 3010be7cfa594aac6134887b8505b3f1bd619ad4 (patch) | |
| tree | 867d21a3537efafc20045dc58ffd18104f0ca474 /net/wireless/util.c | |
| parent | a0edb0970a4d09aed24b6f37cd6fd0c545565485 (diff) | |
| parent | 4db1ebdd40ec0b6ee8fb5744b20274a37aea267d (diff) | |
Merge branch 'android-4.4-p' of https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-05200-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
4db1ebdd40ec0 FROMLIST: HID: nintendo: add nintendo switch controller driver
Conflicts:
arch/arm64/boot/Makefile
arch/arm64/kernel/psci.c
arch/x86/configs/x86_64_cuttlefish_defconfig
drivers/md/dm.c
drivers/of/Kconfig
drivers/thermal/thermal_core.c
fs/proc/meminfo.c
kernel/locking/spinlock_debug.c
kernel/time/hrtimer.c
net/wireless/util.c
Change-Id: I5b5163497b7c6ab8487ffbb2d036e4cda01ed670
Diffstat (limited to 'net/wireless/util.c')
| -rw-r--r-- | net/wireless/util.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c index 117229c0b5d0..dd4be0466ae0 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1908,3 +1908,48 @@ bool cfg80211_is_gratuitous_arp_unsolicited_na(struct sk_buff *skb) return false; } EXPORT_SYMBOL(cfg80211_is_gratuitous_arp_unsolicited_na); + +/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ +struct iapp_layer2_update { + u8 da[ETH_ALEN]; /* broadcast */ + u8 sa[ETH_ALEN]; /* STA addr */ + __be16 len; /* 6 */ + u8 dsap; /* 0 */ + u8 ssap; /* 0 */ + u8 control; + u8 xid_info[3]; +} __packed; + +void cfg80211_send_layer2_update(struct net_device *dev, const u8 *addr) +{ + struct iapp_layer2_update *msg; + struct sk_buff *skb; + + /* Send Level 2 Update Frame to update forwarding tables in layer 2 + * bridge devices */ + + skb = dev_alloc_skb(sizeof(*msg)); + if (!skb) + return; + msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); + + /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) + * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ + + eth_broadcast_addr(msg->da); + ether_addr_copy(msg->sa, addr); + msg->len = htons(6); + msg->dsap = 0; + msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ + msg->control = 0xaf; /* XID response lsb.1111F101. + * F=0 (no poll command; unsolicited frame) */ + msg->xid_info[0] = 0x81; /* XID format identifier */ + msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ + msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ + + skb->dev = dev; + skb->protocol = eth_type_trans(skb, dev); + memset(skb->cb, 0, sizeof(skb->cb)); + netif_rx_ni(skb); +} +EXPORT_SYMBOL(cfg80211_send_layer2_update); |