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cfg80211: configuration for WoWLAN over TCP 

Intel Wireless devices are able to make a TCP connection
after suspending, sending some data and waking up when
the connection receives wakeup data (or breaks). Add the
WoWLAN configuration and feature advertising API for it.

Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2013-01-23 22:57:40 +01:00
parent a0497f9f57
commit 2a0e047ed6
4 changed files with 474 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
include/net/cfg80211.h
View File

@ -19,6 +19,7 @@
#include <linux/nl80211.h>
#include <linux/if_ether.h>
#include <linux/ieee80211.h>
#include <linux/net.h>
#include <net/regulatory.h>
/**
@ -1587,6 +1588,41 @@ struct cfg80211_wowlan_trig_pkt_pattern {
int pkt_offset;
};
/**
* struct cfg80211_wowlan_tcp - TCP connection parameters
*
* @sock: (internal) socket for source port allocation
* @src: source IP address
* @dst: destination IP address
* @dst_mac: destination MAC address
* @src_port: source port
* @dst_port: destination port
* @payload_len: data payload length
* @payload: data payload buffer
* @payload_seq: payload sequence stamping configuration
* @data_interval: interval at which to send data packets
* @wake_len: wakeup payload match length
* @wake_data: wakeup payload match data
* @wake_mask: wakeup payload match mask
* @tokens_size: length of the tokens buffer
* @payload_tok: payload token usage configuration
*/
struct cfg80211_wowlan_tcp {
struct socket *sock;
__be32 src, dst;
u16 src_port, dst_port;
u8 dst_mac[ETH_ALEN];
int payload_len;
const u8 *payload;
struct nl80211_wowlan_tcp_data_seq payload_seq;
u32 data_interval;
u32 wake_len;
const u8 *wake_data, *wake_mask;
u32 tokens_size;
/* must be last, variable member */
struct nl80211_wowlan_tcp_data_token payload_tok;
};
/**
* struct cfg80211_wowlan - Wake on Wireless-LAN support info
*
@ -1601,12 +1637,15 @@ struct cfg80211_wowlan_trig_pkt_pattern {
* @eap_identity_req: wake up on EAP identity request packet
* @four_way_handshake: wake up on 4-way handshake
* @rfkill_release: wake up when rfkill is released
* @tcp: TCP connection establishment/wakeup parameters, see nl80211.h.
* NULL if not configured.
*/
struct cfg80211_wowlan {
bool any, disconnect, magic_pkt, gtk_rekey_failure,
eap_identity_req, four_way_handshake,
rfkill_release;
struct cfg80211_wowlan_trig_pkt_pattern *patterns;
struct cfg80211_wowlan_tcp *tcp;
int n_patterns;
};
@ -1626,11 +1665,15 @@ struct cfg80211_wowlan {
* frame triggers an 802.3 frame should be reported, for
* disconnect due to deauth 802.11 frame. This indicates which
* it is.
* @tcp_match: TCP wakeup packet received
* @tcp_connlost: TCP connection lost or failed to establish
* @tcp_nomoretokens: TCP data ran out of tokens
*/
struct cfg80211_wowlan_wakeup {
bool disconnect, magic_pkt, gtk_rekey_failure,
eap_identity_req, four_way_handshake,
rfkill_release, packet_80211;
rfkill_release, packet_80211,
tcp_match, tcp_connlost, tcp_nomoretokens;
s32 pattern_idx;
u32 packet_present_len, packet_len;
const void *packet;
@ -2285,6 +2328,14 @@ enum wiphy_wowlan_support_flags {
WIPHY_WOWLAN_RFKILL_RELEASE = BIT(7),
};
struct wiphy_wowlan_tcp_support {
const struct nl80211_wowlan_tcp_data_token_feature *tok;
u32 data_payload_max;
u32 data_interval_max;
u32 wake_payload_max;
bool seq;
};
/**
* struct wiphy_wowlan_support - WoWLAN support data
* @flags: see &enum wiphy_wowlan_support_flags
@ -2293,6 +2344,7 @@ enum wiphy_wowlan_support_flags {
* @pattern_max_len: maximum length of each pattern
* @pattern_min_len: minimum length of each pattern
* @max_pkt_offset: maximum Rx packet offset
* @tcp: TCP wakeup support information
*/
struct wiphy_wowlan_support {
u32 flags;
@ -2300,6 +2352,7 @@ struct wiphy_wowlan_support {
int pattern_max_len;
int pattern_min_len;
int max_pkt_offset;
const struct wiphy_wowlan_tcp_support *tcp;
};
/**

125
include/uapi/linux/nl80211.h
View File

@ -2991,6 +2991,17 @@ struct nl80211_wowlan_pattern_support {
* @NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN: Original length of the 802.3
* packet, may be bigger than the @NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023
* attribute if the packet was truncated somewhere.
* @NL80211_WOWLAN_TRIG_TCP_CONNECTION: TCP connection wake, see DOC section
* "TCP connection wakeup" for more details. This is a nested attribute
* containing the exact information for establishing and keeping alive
* the TCP connection.
* @NL80211_WOWLAN_TRIG_TCP_WAKEUP_MATCH: For wakeup reporting only, the
* wakeup packet was received on the TCP connection
* @NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST: For wakeup reporting only, the
* TCP connection was lost or failed to be established
* @NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS: For wakeup reporting only,
* the TCP connection ran out of tokens to use for data to send to the
* service
* @NUM_NL80211_WOWLAN_TRIG: number of wake on wireless triggers
* @MAX_NL80211_WOWLAN_TRIG: highest wowlan trigger attribute number
*
@ -3012,12 +3023,126 @@ enum nl80211_wowlan_triggers {
NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN,
NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023,
NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN,
NL80211_WOWLAN_TRIG_TCP_CONNECTION,
NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH,
NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST,
NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS,
/* keep last */
NUM_NL80211_WOWLAN_TRIG,
MAX_NL80211_WOWLAN_TRIG = NUM_NL80211_WOWLAN_TRIG - 1
};
/**
* DOC: TCP connection wakeup
*
* Some devices can establish a TCP connection in order to be woken up by a
* packet coming in from outside their network segment, or behind NAT. If
* configured, the device will establish a TCP connection to the given
* service, and periodically send data to that service. The first data
* packet is usually transmitted after SYN/ACK, also ACKing the SYN/ACK.
* The data packets can optionally include a (little endian) sequence
* number (in the TCP payload!) that is generated by the device, and, also
* optionally, a token from a list of tokens. This serves as a keep-alive
* with the service, and for NATed connections, etc.
*
* During this keep-alive period, the server doesn't send any data to the
* client. When receiving data, it is compared against the wakeup pattern
* (and mask) and if it matches, the host is woken up. Similarly, if the
* connection breaks or cannot be established to start with, the host is
* also woken up.
*
* Developer's note: ARP offload is required for this, otherwise TCP
* response packets might not go through correctly.
*/
/**
* struct nl80211_wowlan_tcp_data_seq - WoWLAN TCP data sequence
* @start: starting value
* @offset: offset of sequence number in packet
* @len: length of the sequence value to write, 1 through 4
*
* Note: don't confuse with the TCP sequence number(s), this is for the
* keepalive packet payload. The actual value is written into the packet
* in little endian.
*/
struct nl80211_wowlan_tcp_data_seq {
__u32 start, offset, len;
};
/**
* struct nl80211_wowlan_tcp_data_token - WoWLAN TCP data token config
* @offset: offset of token in packet
* @len: length of each token
* @token_stream: stream of data to be used for the tokens, the length must
* be a multiple of @len for this to make sense
*/
struct nl80211_wowlan_tcp_data_token {
__u32 offset, len;
__u8 token_stream[];
};
/**
* struct nl80211_wowlan_tcp_data_token_feature - data token features
* @min_len: minimum token length
* @max_len: maximum token length
* @bufsize: total available token buffer size (max size of @token_stream)
*/
struct nl80211_wowlan_tcp_data_token_feature {
__u32 min_len, max_len, bufsize;
};
/**
* enum nl80211_wowlan_tcp_attrs - WoWLAN TCP connection parameters
* @__NL80211_WOWLAN_TCP_INVALID: invalid number for nested attributes
* @NL80211_WOWLAN_TCP_SRC_IPV4: source IPv4 address (in network byte order)
* @NL80211_WOWLAN_TCP_DST_IPV4: destination IPv4 address
* (in network byte order)
* @NL80211_WOWLAN_TCP_DST_MAC: destination MAC address, this is given because
* route lookup when configured might be invalid by the time we suspend,
* and doing a route lookup when suspending is no longer possible as it
* might require ARP querying.
* @NL80211_WOWLAN_TCP_SRC_PORT: source port (u16); optional, if not given a
* socket and port will be allocated
* @NL80211_WOWLAN_TCP_DST_PORT: destination port (u16)
* @NL80211_WOWLAN_TCP_DATA_PAYLOAD: data packet payload, at least one byte.
* For feature advertising, a u32 attribute holding the maximum length
* of the data payload.
* @NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ: data packet sequence configuration
* (if desired), a &struct nl80211_wowlan_tcp_data_seq. For feature
* advertising it is just a flag
* @NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN: data packet token configuration,
* see &struct nl80211_wowlan_tcp_data_token and for advertising see
* &struct nl80211_wowlan_tcp_data_token_feature.
* @NL80211_WOWLAN_TCP_DATA_INTERVAL: data interval in seconds, maximum
* interval in feature advertising (u32)
* @NL80211_WOWLAN_TCP_WAKE_PAYLOAD: wake packet payload, for advertising a
* u32 attribute holding the maximum length
* @NL80211_WOWLAN_TCP_WAKE_MASK: Wake packet payload mask, not used for
* feature advertising. The mask works like @NL80211_WOWLAN_PKTPAT_MASK
* but on the TCP payload only.
* @NUM_NL80211_WOWLAN_TCP: number of TCP attributes
* @MAX_NL80211_WOWLAN_TCP: highest attribute number
*/
enum nl80211_wowlan_tcp_attrs {
__NL80211_WOWLAN_TCP_INVALID,
NL80211_WOWLAN_TCP_SRC_IPV4,
NL80211_WOWLAN_TCP_DST_IPV4,
NL80211_WOWLAN_TCP_DST_MAC,
NL80211_WOWLAN_TCP_SRC_PORT,
NL80211_WOWLAN_TCP_DST_PORT,
NL80211_WOWLAN_TCP_DATA_PAYLOAD,
NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
NL80211_WOWLAN_TCP_DATA_INTERVAL,
NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
NL80211_WOWLAN_TCP_WAKE_MASK,
/* keep last */
NUM_NL80211_WOWLAN_TCP,
MAX_NL80211_WOWLAN_TCP = NUM_NL80211_WOWLAN_TCP - 1
};
/**
* enum nl80211_iface_limit_attrs - limit attributes
* @NL80211_IFACE_LIMIT_UNSPEC: (reserved)

3
net/wireless/core.h
View File

@ -108,6 +108,9 @@ cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
for (i = 0; i < rdev->wowlan->n_patterns; i++)
kfree(rdev->wowlan->patterns[i].mask);
kfree(rdev->wowlan->patterns);
if (rdev->wowlan->tcp && rdev->wowlan->tcp->sock)
sock_release(rdev->wowlan->tcp->sock);
kfree(rdev->wowlan->tcp);
kfree(rdev->wowlan);
}

295
net/wireless/nl80211.c
View File

@ -19,6 +19,7 @@
#include <net/genetlink.h>
#include <net/cfg80211.h>
#include <net/sock.h>
#include <net/inet_connection_sock.h>
#include "core.h"
#include "nl80211.h"
#include "reg.h"
@ -399,6 +400,26 @@ nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
};
static const struct nla_policy
nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
[NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
[NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
[NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
[NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
[NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
[NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
.len = sizeof(struct nl80211_wowlan_tcp_data_seq)
},
[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
.len = sizeof(struct nl80211_wowlan_tcp_data_token)
},
[NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
[NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
};
/* policy for GTK rekey offload attributes */
@ -872,6 +893,48 @@ static int nl80211_put_iface_combinations(struct wiphy *wiphy,
return -ENOBUFS;
}
#ifdef CONFIG_PM
static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
struct sk_buff *msg)
{
const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp;
struct nlattr *nl_tcp;
if (!tcp)
return 0;
nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
if (!nl_tcp)
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
tcp->data_payload_max))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
tcp->data_payload_max))
return -ENOBUFS;
if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
return -ENOBUFS;
if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
sizeof(*tcp->tok), tcp->tok))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
tcp->data_interval_max))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
tcp->wake_payload_max))
return -ENOBUFS;
nla_nest_end(msg, nl_tcp);
return 0;
}
#endif
static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flags,
struct cfg80211_registered_device *dev)
{
@ -1246,6 +1309,9 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flag
goto nla_put_failure;
}
if (nl80211_send_wowlan_tcp_caps(dev, msg))
goto nla_put_failure;
nla_nest_end(msg, nl_wowlan);
}
#endif
@ -6930,16 +6996,67 @@ static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
return 0;
}
static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
struct cfg80211_wowlan_tcp *tcp)
{
struct nlattr *nl_tcp;
if (!tcp)
return 0;
nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
if (!nl_tcp)
return -ENOBUFS;
if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
tcp->payload_len, tcp->payload) ||
nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
tcp->data_interval) ||
nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
tcp->wake_len, tcp->wake_data) ||
nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
return -ENOBUFS;
if (tcp->payload_seq.len &&
nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
sizeof(tcp->payload_seq), &tcp->payload_seq))
return -ENOBUFS;
if (tcp->payload_tok.len &&
nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
sizeof(tcp->payload_tok) + tcp->tokens_size,
&tcp->payload_tok))
return -ENOBUFS;
return 0;
}
static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct sk_buff *msg;
void *hdr;
u32 size = NLMSG_DEFAULT_SIZE;
if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
!rdev->wiphy.wowlan.tcp)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (rdev->wowlan && rdev->wowlan->tcp) {
/* adjust size to have room for all the data */
size += rdev->wowlan->tcp->tokens_size +
rdev->wowlan->tcp->payload_len +
rdev->wowlan->tcp->wake_len +
rdev->wowlan->tcp->wake_len / 8;
}
msg = nlmsg_new(size, GFP_KERNEL);
if (!msg)
return -ENOMEM;
@ -6970,8 +7087,13 @@ static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
(rdev->wowlan->rfkill_release &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
goto nla_put_failure;
if (nl80211_send_wowlan_patterns(msg, rdev))
goto nla_put_failure;
if (nl80211_send_wowlan_tcp(msg, rdev->wowlan->tcp))
goto nla_put_failure;
nla_nest_end(msg, nl_wowlan);
}
@ -6983,6 +7105,150 @@ static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
return -ENOBUFS;
}
static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
struct nlattr *attr,
struct cfg80211_wowlan *trig)
{
struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
struct cfg80211_wowlan_tcp *cfg;
struct nl80211_wowlan_tcp_data_token *tok = NULL;
struct nl80211_wowlan_tcp_data_seq *seq = NULL;
u32 size;
u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
int err, port;
if (!rdev->wiphy.wowlan.tcp)
return -EINVAL;
err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
nla_data(attr), nla_len(attr),
nl80211_wowlan_tcp_policy);
if (err)
return err;
if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
!tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
!tb[NL80211_WOWLAN_TCP_DST_MAC] ||
!tb[NL80211_WOWLAN_TCP_DST_PORT] ||
!tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
!tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
!tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
!tb[NL80211_WOWLAN_TCP_WAKE_MASK])
return -EINVAL;
data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
if (data_size > rdev->wiphy.wowlan.tcp->data_payload_max)
return -EINVAL;
if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
rdev->wiphy.wowlan.tcp->data_interval_max)
return -EINVAL;
wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
if (wake_size > rdev->wiphy.wowlan.tcp->wake_payload_max)
return -EINVAL;
wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
return -EINVAL;
if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
tokens_size = tokln - sizeof(*tok);
if (!tok->len || tokens_size % tok->len)
return -EINVAL;
if (!rdev->wiphy.wowlan.tcp->tok)
return -EINVAL;
if (tok->len > rdev->wiphy.wowlan.tcp->tok->max_len)
return -EINVAL;
if (tok->len < rdev->wiphy.wowlan.tcp->tok->min_len)
return -EINVAL;
if (tokens_size > rdev->wiphy.wowlan.tcp->tok->bufsize)
return -EINVAL;
if (tok->offset + tok->len > data_size)
return -EINVAL;
}
if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
if (!rdev->wiphy.wowlan.tcp->seq)
return -EINVAL;
if (seq->len == 0 || seq->len > 4)
return -EINVAL;
if (seq->len + seq->offset > data_size)
return -EINVAL;
}
size = sizeof(*cfg);
size += data_size;
size += wake_size + wake_mask_size;
size += tokens_size;
cfg = kzalloc(size, GFP_KERNEL);
if (!cfg)
return -ENOMEM;
cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
ETH_ALEN);
if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
else
port = 0;
#ifdef CONFIG_INET
/* allocate a socket and port for it and use it */
err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
IPPROTO_TCP, &cfg->sock, 1);
if (err) {
kfree(cfg);
return err;
}
if (inet_csk_get_port(cfg->sock->sk, port)) {
sock_release(cfg->sock);
kfree(cfg);
return -EADDRINUSE;
}
cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
#else
if (!port) {
kfree(cfg);
return -EINVAL;
}
cfg->src_port = port;
#endif
cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
cfg->payload_len = data_size;
cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
memcpy((void *)cfg->payload,
nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
data_size);
if (seq)
cfg->payload_seq = *seq;
cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
cfg->wake_len = wake_size;
cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
memcpy((void *)cfg->wake_data,
nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
wake_size);
cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
data_size + wake_size;
memcpy((void *)cfg->wake_mask,
nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
wake_mask_size);
if (tok) {
cfg->tokens_size = tokens_size;
memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
}
trig->tcp = cfg;
return 0;
}
static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
@ -6993,7 +7259,8 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
int err, i;
bool prev_enabled = rdev->wowlan;
if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
!rdev->wiphy.wowlan.tcp)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
@ -7120,6 +7387,14 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
}
}
if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
err = nl80211_parse_wowlan_tcp(
rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
&new_triggers);
if (err)
goto error;
}
ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
if (!ntrig) {
err = -ENOMEM;
@ -7137,6 +7412,9 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
for (i = 0; i < new_triggers.n_patterns; i++)
kfree(new_triggers.patterns[i].mask);
kfree(new_triggers.patterns);
if (new_triggers.tcp && new_triggers.tcp->sock)
sock_release(new_triggers.tcp->sock);
kfree(new_triggers.tcp);
return err;
}
#endif
@ -9418,6 +9696,17 @@ void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
wakeup->pattern_idx))
goto free_msg;
if (wakeup->tcp_match)
nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
if (wakeup->tcp_connlost)
nla_put_flag(msg,
NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
if (wakeup->tcp_nomoretokens)
nla_put_flag(msg,
NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
if (wakeup->packet) {
u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;