This is a note to let you know that I've just added the patch titled
sierra_net: Add support for IPv6 and Dual-Stack Link Sense Indications
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
sierra_net-add-support-for-ipv6-and-dual-stack-link-sense-indications.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Jun 15 11:13:01 CEST 2017
From: Stefan Brüns <stefan.bruens@xxxxxxxxxxxxxx>
Date: Tue, 23 May 2017 21:53:43 -0400
Subject: sierra_net: Add support for IPv6 and Dual-Stack Link Sense Indications
From: Stefan Brüns <stefan.bruens@xxxxxxxxxxxxxx>
[ Upstream commit 5a70348e1187c5bf1cbd0ec51843f36befed1c2d ]
If a context is configured as dualstack ("IPv4v6"), the modem indicates
the context activation with a slightly different indication message.
The dual-stack indication omits the link_type (IPv4/v6) and adds
additional address fields.
IPv6 LSIs are identical to IPv4 LSIs, but have a different link type.
Signed-off-by: Stefan Brüns <stefan.bruens@xxxxxxxxxxxxxx>
Reviewed-by: Bjørn Mork <bjorn@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/usb/sierra_net.c | 101 ++++++++++++++++++++++++++++---------------
1 file changed, 66 insertions(+), 35 deletions(-)
--- a/drivers/net/usb/sierra_net.c
+++ b/drivers/net/usb/sierra_net.c
@@ -73,8 +73,6 @@ static atomic_t iface_counter = ATOMIC_I
/* Private data structure */
struct sierra_net_data {
- u8 ethr_hdr_tmpl[ETH_HLEN]; /* ethernet header template for rx'd pkts */
-
u16 link_up; /* air link up or down */
u8 tx_hdr_template[4]; /* part of HIP hdr for tx'd packets */
@@ -122,6 +120,7 @@ struct param {
/* LSI Protocol types */
#define SIERRA_NET_PROTOCOL_UMTS 0x01
+#define SIERRA_NET_PROTOCOL_UMTS_DS 0x04
/* LSI Coverage */
#define SIERRA_NET_COVERAGE_NONE 0x00
#define SIERRA_NET_COVERAGE_NOPACKET 0x01
@@ -129,7 +128,8 @@ struct param {
/* LSI Session */
#define SIERRA_NET_SESSION_IDLE 0x00
/* LSI Link types */
-#define SIERRA_NET_AS_LINK_TYPE_IPv4 0x00
+#define SIERRA_NET_AS_LINK_TYPE_IPV4 0x00
+#define SIERRA_NET_AS_LINK_TYPE_IPV6 0x02
struct lsi_umts {
u8 protocol;
@@ -137,9 +137,14 @@ struct lsi_umts {
__be16 length;
/* eventually use a union for the rest - assume umts for now */
u8 coverage;
- u8 unused2[41];
+ u8 network_len; /* network name len */
+ u8 network[40]; /* network name (UCS2, bigendian) */
u8 session_state;
u8 unused3[33];
+} __packed;
+
+struct lsi_umts_single {
+ struct lsi_umts lsi;
u8 link_type;
u8 pdp_addr_len; /* NW-supplied PDP address len */
u8 pdp_addr[16]; /* NW-supplied PDP address (bigendian)) */
@@ -158,10 +163,31 @@ struct lsi_umts {
u8 reserved[8];
} __packed;
+struct lsi_umts_dual {
+ struct lsi_umts lsi;
+ u8 pdp_addr4_len; /* NW-supplied PDP IPv4 address len */
+ u8 pdp_addr4[4]; /* NW-supplied PDP IPv4 address (bigendian)) */
+ u8 pdp_addr6_len; /* NW-supplied PDP IPv6 address len */
+ u8 pdp_addr6[16]; /* NW-supplied PDP IPv6 address (bigendian)) */
+ u8 unused4[23];
+ u8 dns1_addr4_len; /* NW-supplied 1st DNS v4 address len (bigendian) */
+ u8 dns1_addr4[4]; /* NW-supplied 1st DNS v4 address */
+ u8 dns1_addr6_len; /* NW-supplied 1st DNS v6 address len */
+ u8 dns1_addr6[16]; /* NW-supplied 1st DNS v6 address (bigendian)*/
+ u8 dns2_addr4_len; /* NW-supplied 2nd DNS v4 address len (bigendian) */
+ u8 dns2_addr4[4]; /* NW-supplied 2nd DNS v4 address */
+ u8 dns2_addr6_len; /* NW-supplied 2nd DNS v6 address len */
+ u8 dns2_addr6[16]; /* NW-supplied 2nd DNS v6 address (bigendian)*/
+ u8 unused5[68];
+} __packed;
+
#define SIERRA_NET_LSI_COMMON_LEN 4
-#define SIERRA_NET_LSI_UMTS_LEN (sizeof(struct lsi_umts))
+#define SIERRA_NET_LSI_UMTS_LEN (sizeof(struct lsi_umts_single))
#define SIERRA_NET_LSI_UMTS_STATUS_LEN \
(SIERRA_NET_LSI_UMTS_LEN - SIERRA_NET_LSI_COMMON_LEN)
+#define SIERRA_NET_LSI_UMTS_DS_LEN (sizeof(struct lsi_umts_dual))
+#define SIERRA_NET_LSI_UMTS_DS_STATUS_LEN \
+ (SIERRA_NET_LSI_UMTS_DS_LEN - SIERRA_NET_LSI_COMMON_LEN)
/* Forward definitions */
static void sierra_sync_timer(unsigned long syncdata);
@@ -191,10 +217,11 @@ static inline void sierra_net_set_privat
dev->data[0] = (unsigned long)priv;
}
-/* is packet IPv4 */
+/* is packet IPv4/IPv6 */
static inline int is_ip(struct sk_buff *skb)
{
- return skb->protocol == cpu_to_be16(ETH_P_IP);
+ return skb->protocol == cpu_to_be16(ETH_P_IP) ||
+ skb->protocol == cpu_to_be16(ETH_P_IPV6);
}
/*
@@ -350,18 +377,11 @@ static inline int sierra_net_is_valid_ad
static int sierra_net_parse_lsi(struct usbnet *dev, char *data, int datalen)
{
struct lsi_umts *lsi = (struct lsi_umts *)data;
+ u32 expected_length;
- if (datalen < sizeof(struct lsi_umts)) {
- netdev_err(dev->net, "%s: Data length %d, exp %Zu\n",
- __func__, datalen,
- sizeof(struct lsi_umts));
- return -1;
- }
-
- if (lsi->length != cpu_to_be16(SIERRA_NET_LSI_UMTS_STATUS_LEN)) {
- netdev_err(dev->net, "%s: LSI_UMTS_STATUS_LEN %d, exp %u\n",
- __func__, be16_to_cpu(lsi->length),
- (u32)SIERRA_NET_LSI_UMTS_STATUS_LEN);
+ if (datalen < sizeof(struct lsi_umts_single)) {
+ netdev_err(dev->net, "%s: Data length %d, exp >= %Zu\n",
+ __func__, datalen, sizeof(struct lsi_umts_single));
return -1;
}
@@ -373,22 +393,34 @@ static int sierra_net_parse_lsi(struct u
}
/* Validate the protocol - only support UMTS for now */
- if (lsi->protocol != SIERRA_NET_PROTOCOL_UMTS) {
+ if (lsi->protocol == SIERRA_NET_PROTOCOL_UMTS) {
+ struct lsi_umts_single *single = (struct lsi_umts_single *)lsi;
+
+ /* Validate the link type */
+ if (single->link_type != SIERRA_NET_AS_LINK_TYPE_IPV4 &&
+ single->link_type != SIERRA_NET_AS_LINK_TYPE_IPV6) {
+ netdev_err(dev->net, "Link type unsupported: 0x%02x\n",
+ single->link_type);
+ return -1;
+ }
+ expected_length = SIERRA_NET_LSI_UMTS_STATUS_LEN;
+ } else if (lsi->protocol == SIERRA_NET_PROTOCOL_UMTS_DS) {
+ expected_length = SIERRA_NET_LSI_UMTS_DS_STATUS_LEN;
+ } else {
netdev_err(dev->net, "Protocol unsupported, 0x%02x\n",
- lsi->protocol);
+ lsi->protocol);
return -1;
}
- /* Validate the link type */
- if (lsi->link_type != SIERRA_NET_AS_LINK_TYPE_IPv4) {
- netdev_err(dev->net, "Link type unsupported: 0x%02x\n",
- lsi->link_type);
+ if (be16_to_cpu(lsi->length) != expected_length) {
+ netdev_err(dev->net, "%s: LSI_UMTS_STATUS_LEN %d, exp %u\n",
+ __func__, be16_to_cpu(lsi->length), expected_length);
return -1;
}
/* Validate the coverage */
- if (lsi->coverage == SIERRA_NET_COVERAGE_NONE
- || lsi->coverage == SIERRA_NET_COVERAGE_NOPACKET) {
+ if (lsi->coverage == SIERRA_NET_COVERAGE_NONE ||
+ lsi->coverage == SIERRA_NET_COVERAGE_NOPACKET) {
netdev_err(dev->net, "No coverage, 0x%02x\n", lsi->coverage);
return 0;
}
@@ -662,7 +694,6 @@ static int sierra_net_bind(struct usbnet
u8 numendpoints;
u16 fwattr = 0;
int status;
- struct ethhdr *eth;
struct sierra_net_data *priv;
static const u8 sync_tmplate[sizeof(priv->sync_msg)] = {
0x00, 0x00, SIERRA_NET_HIP_MSYNC_ID, 0x00};
@@ -700,11 +731,6 @@ static int sierra_net_bind(struct usbnet
dev->net->dev_addr[ETH_ALEN-2] = atomic_inc_return(&iface_counter);
dev->net->dev_addr[ETH_ALEN-1] = ifacenum;
- /* we will have to manufacture ethernet headers, prepare template */
- eth = (struct ethhdr *)priv->ethr_hdr_tmpl;
- memcpy(ð->h_dest, dev->net->dev_addr, ETH_ALEN);
- eth->h_proto = cpu_to_be16(ETH_P_IP);
-
/* prepare shutdown message template */
memcpy(priv->shdwn_msg, shdwn_tmplate, sizeof(priv->shdwn_msg));
/* set context index initially to 0 - prepares tx hdr template */
@@ -833,9 +859,14 @@ static int sierra_net_rx_fixup(struct us
skb_pull(skb, hh.hdrlen);
- /* We are going to accept this packet, prepare it */
- memcpy(skb->data, sierra_net_get_private(dev)->ethr_hdr_tmpl,
- ETH_HLEN);
+ /* We are going to accept this packet, prepare it.
+ * In case protocol is IPv6, keep it, otherwise force IPv4.
+ */
+ skb_reset_mac_header(skb);
+ if (eth_hdr(skb)->h_proto != cpu_to_be16(ETH_P_IPV6))
+ eth_hdr(skb)->h_proto = cpu_to_be16(ETH_P_IP);
+ eth_zero_addr(eth_hdr(skb)->h_source);
+ memcpy(eth_hdr(skb)->h_dest, dev->net->dev_addr, ETH_ALEN);
/* Last packet in batch handled by usbnet */
if (hh.payload_len.word == skb->len)
Patches currently in stable-queue which might be from stefan.bruens@xxxxxxxxxxxxxx are
queue-4.4/sierra_net-skip-validating-irrelevant-fields-for-idle-lsis.patch
queue-4.4/sierra_net-add-support-for-ipv6-and-dual-stack-link-sense-indications.patch