diff options
Diffstat (limited to 'bsp/meta-freescale-3rdparty/recipes-kernel/linux/linux-fslc/ccimx6ul/0005-net-wireless-Add-cfg80211_is_gratuitous_arp_unsolici.patch')
| -rw-r--r-- | bsp/meta-freescale-3rdparty/recipes-kernel/linux/linux-fslc/ccimx6ul/0005-net-wireless-Add-cfg80211_is_gratuitous_arp_unsolici.patch | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/bsp/meta-freescale-3rdparty/recipes-kernel/linux/linux-fslc/ccimx6ul/0005-net-wireless-Add-cfg80211_is_gratuitous_arp_unsolici.patch b/bsp/meta-freescale-3rdparty/recipes-kernel/linux/linux-fslc/ccimx6ul/0005-net-wireless-Add-cfg80211_is_gratuitous_arp_unsolici.patch new file mode 100644 index 00000000..fbf1135e --- /dev/null +++ b/bsp/meta-freescale-3rdparty/recipes-kernel/linux/linux-fslc/ccimx6ul/0005-net-wireless-Add-cfg80211_is_gratuitous_arp_unsolici.patch @@ -0,0 +1,95 @@ +From: Alex Gonzalez <alex.gonzalez@digi.com> +Date: Fri, 7 Sep 2018 13:01:54 +0200 +Subject: [PATCH] net: wireless: Add + cfg80211_is_gratuitous_arp_unsolicited_na() + +The QCA6564 driver makes use of this call when compiled with the +QCA_VENDOR_KERNEL flag. + +Signed-off-by: Alex Gonzalez <alex.gonzalez@digi.com> +--- + include/net/cfg80211.h | 10 ++++++++++ + net/wireless/util.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++ + 2 files changed, 62 insertions(+) + +diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h +index 3082f6bf047d..42445bd1c26a 100644 +--- a/include/net/cfg80211.h ++++ b/include/net/cfg80211.h +@@ -6736,6 +6736,16 @@ void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp); + unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy); + + /** ++ * cfg80211_is_gratuitous_arp_unsolicited_na - packet is grat. ARP/unsol. NA ++ * @skb: the input packet, must be an ethernet frame already ++ * ++ * Return: %true if the packet is a gratuitous ARP or unsolicited NA packet. ++ * This is used to drop packets that shouldn't occur because the AP implements ++ * a proxy service. ++ */ ++bool cfg80211_is_gratuitous_arp_unsolicited_na(struct sk_buff *skb); ++ ++/** + * cfg80211_check_combinations - check interface combinations + * + * @wiphy: the wiphy +diff --git a/net/wireless/util.c b/net/wireless/util.c +index ec30e3732c7b..abcefae39e81 100644 +--- a/net/wireless/util.c ++++ b/net/wireless/util.c +@@ -2061,3 +2061,55 @@ int ieee80211_get_vht_max_nss(struct ieee80211_vht_cap *cap, + return max_vht_nss; + } + EXPORT_SYMBOL(ieee80211_get_vht_max_nss); ++ ++bool cfg80211_is_gratuitous_arp_unsolicited_na(struct sk_buff *skb) ++{ ++ const struct ethhdr *eth = (void *)skb->data; ++ ++ const struct { ++ struct arphdr hdr; ++ u8 ar_sha[ETH_ALEN]; ++ u8 ar_sip[4]; ++ u8 ar_tha[ETH_ALEN]; ++ u8 ar_tip[4]; ++ } __packed * arp; ++ ++ const struct ipv6hdr *ipv6; ++ const struct icmp6hdr *icmpv6; ++ ++ switch (eth->h_proto) { ++ case cpu_to_be16(ETH_P_ARP): ++ /* can't say - but will probably be dropped later anyway */ ++ if (!pskb_may_pull(skb, sizeof(*eth) + sizeof(*arp))) ++ return false; ++ ++ arp = (void *)(eth + 1); ++ ++ if ((arp->hdr.ar_op == cpu_to_be16(ARPOP_REPLY) || ++ arp->hdr.ar_op == cpu_to_be16(ARPOP_REQUEST)) && ++ !memcmp(arp->ar_sip, arp->ar_tip, sizeof(arp->ar_sip))) ++ return true; ++ break; ++ case cpu_to_be16(ETH_P_IPV6): ++ /* can't say - but will probably be dropped later anyway */ ++ if (!pskb_may_pull(skb, sizeof(*eth) + sizeof(*ipv6) + ++ sizeof(*icmpv6))) ++ return false; ++ ++ ipv6 = (void *)(eth + 1); ++ icmpv6 = (void *)(ipv6 + 1); ++ ++ if (icmpv6->icmp6_type == NDISC_NEIGHBOUR_ADVERTISEMENT && ++ !memcmp(&ipv6->saddr, &ipv6->daddr, sizeof(ipv6->saddr))) ++ return true; ++ break; ++ default: ++ /* no need to support other protocols, proxy service isn't ++ * specified for any others ++ */ ++ break; ++ } ++ ++ return false; ++} ++EXPORT_SYMBOL(cfg80211_is_gratuitous_arp_unsolicited_na); |