* [PATCH v4 2/2] profiles/network: Add support for handling extension hdr in ctrl msg
2015-05-14 7:47 [PATCH v4 1/2] lib/bnep: Update bnep header with BNEPGETSUPPFEAT and setup response Grzegorz Kolodziejczyk
@ 2015-05-14 7:47 ` Grzegorz Kolodziejczyk
2015-05-19 14:34 ` [PATCH v4 1/2] lib/bnep: Update bnep header with BNEPGETSUPPFEAT and setup response Szymon Janc
1 sibling, 0 replies; 5+ messages in thread
From: Grzegorz Kolodziejczyk @ 2015-05-14 7:47 UTC (permalink / raw)
To: linux-bluetooth
Support for extension headers is mandatory functionality. This patch
add support to it and leave responsibility for processing extension
header and sending setup success response to kernel.
This patch is necessary to pass PTS bnep test TC_CTRL_BV_19_C.
---
android/pan.c | 7 +++-
profiles/network/bnep.c | 102 ++++++++++++++++++++++++++++++++++++++++------
profiles/network/server.c | 7 +++-
tools/bneptest.c | 2 +-
4 files changed, 101 insertions(+), 17 deletions(-)
diff --git a/android/pan.c b/android/pan.c
index 6c9815b..0bb576e 100644
--- a/android/pan.c
+++ b/android/pan.c
@@ -471,8 +471,11 @@ static gboolean nap_setup_cb(GIOChannel *chan, GIOCondition cond,
sk = g_io_channel_unix_get_fd(chan);
- /* Reading BNEP_SETUP_CONNECTION_REQUEST_MSG */
- n = read(sk, packet, sizeof(packet));
+ /*
+ * BNEP_SETUP_CONNECTION_REQUEST_MSG should be read and left in case
+ * of kernel setup connection msg handling.
+ */
+ n = recv(sk, packet, sizeof(packet), MSG_PEEK);
if (n < 0) {
error("read(): %s(%d)", strerror(errno), errno);
goto failed;
diff --git a/profiles/network/bnep.c b/profiles/network/bnep.c
index e325b72..59599e4 100644
--- a/profiles/network/bnep.c
+++ b/profiles/network/bnep.c
@@ -124,6 +124,7 @@ static int bnep_connadd(int sk, uint16_t role, char *dev)
req.sock = sk;
req.role = role;
+ req.flags = (1 << BNEP_SETUP_RESPONSE);
if (ioctl(ctl, BNEPCONNADD, &req) < 0) {
int err = -errno;
error("bnep: Failed to add device %s: %s(%d)",
@@ -135,6 +136,18 @@ static int bnep_connadd(int sk, uint16_t role, char *dev)
return 0;
}
+static uint32_t bnep_getsuppfeat(void)
+{
+ uint32_t feat;
+
+ if (ioctl(ctl, BNEPGETSUPPFEAT, &feat) < 0)
+ feat = 0;
+
+ DBG("supported features: 0x%x", feat);
+
+ return feat;
+}
+
static int bnep_if_up(const char *devname)
{
struct ifreq ifr;
@@ -530,7 +543,9 @@ static uint16_t bnep_setup_decode(int sk, struct bnep_setup_conn_req *req,
uint8_t *dest, *source;
uint32_t val;
- if (req->type != BNEP_CONTROL || req->ctrl != BNEP_SETUP_CONN_REQ)
+ if (((req->type != BNEP_CONTROL) &&
+ (req->type != (BNEP_CONTROL | BNEP_EXT_HEADER))) ||
+ req->ctrl != BNEP_SETUP_CONN_REQ)
return BNEP_CONN_NOT_ALLOWED;
dest = req->service;
@@ -587,10 +602,55 @@ static uint16_t bnep_setup_decode(int sk, struct bnep_setup_conn_req *req,
return BNEP_CONN_INVALID_DST;
}
+static int bnep_server_add_legacy(int sk, uint16_t dst, char *bridge,
+ char *iface, const bdaddr_t *addr,
+ uint8_t *setup_data, int len)
+{
+ int err, n;
+ uint16_t rsp;
+
+ n = read(sk, setup_data, len);
+ if (n != len) {
+ err = -EIO;
+ rsp = BNEP_CONN_NOT_ALLOWED;
+ goto reply;
+ }
+
+ err = bnep_connadd(sk, dst, iface);
+ if (err < 0) {
+ rsp = BNEP_CONN_NOT_ALLOWED;
+ goto reply;
+ }
+
+ err = bnep_add_to_bridge(iface, bridge);
+ if (err < 0) {
+ bnep_conndel(addr);
+ rsp = BNEP_CONN_NOT_ALLOWED;
+ goto reply;
+ }
+
+ err = bnep_if_up(iface);
+ if (err < 0) {
+ bnep_del_from_bridge(iface, bridge);
+ bnep_conndel(addr);
+ rsp = BNEP_CONN_NOT_ALLOWED;
+ }
+
+reply:
+ if (bnep_send_ctrl_rsp(sk, BNEP_SETUP_CONN_RSP, rsp) < 0) {
+ err = -errno;
+ error("bnep: send ctrl rsp error: %s (%d)", strerror(-err),
+ -err);
+ }
+
+ return err;
+}
+
int bnep_server_add(int sk, char *bridge, char *iface, const bdaddr_t *addr,
uint8_t *setup_data, int len)
{
int err;
+ uint32_t feat;
uint16_t rsp, dst;
struct bnep_setup_conn_req *req = (void *) setup_data;
@@ -614,31 +674,49 @@ int bnep_server_add(int sk, char *bridge, char *iface, const bdaddr_t *addr,
err = -rsp;
error("bnep: error while decoding setup connection request: %d",
rsp);
- goto reply;
+ goto failed;
}
+ feat = bnep_getsuppfeat();
+
+ /*
+ * Take out setup data if kernel doesn't support handling it, especially
+ * setup request. If kernel would have set session flags, they should
+ * be checked and handled respectively.
+ */
+ if (!feat || !(feat & (1 << BNEP_SETUP_RESPONSE)))
+ return bnep_server_add_legacy(sk, dst, bridge, iface, addr,
+ setup_data, len);
+
err = bnep_connadd(sk, dst, iface);
if (err < 0) {
rsp = BNEP_CONN_NOT_ALLOWED;
- goto reply;
+ goto failed;
}
err = bnep_add_to_bridge(iface, bridge);
- if (err < 0) {
- bnep_conndel(addr);
- rsp = BNEP_CONN_NOT_ALLOWED;
- goto reply;
- }
+ if (err < 0)
+ goto failed_conn;
err = bnep_if_up(iface);
if (err < 0)
- rsp = BNEP_CONN_NOT_ALLOWED;
+ goto failed_bridge;
-reply:
+ return 0;
+
+failed_bridge:
+ bnep_del_from_bridge(iface, bridge);
+
+failed_conn:
+ bnep_conndel(addr);
+
+ return err;
+
+failed:
if (bnep_send_ctrl_rsp(sk, BNEP_SETUP_CONN_RSP, rsp) < 0) {
err = -errno;
- error("bnep: send ctrl rsp error: %s (%d)", strerror(errno),
- errno);
+ error("bnep: send ctrl rsp error: %s (%d)", strerror(-err),
+ -err);
}
return err;
diff --git a/profiles/network/server.c b/profiles/network/server.c
index 32aafc3..1bff9f8 100644
--- a/profiles/network/server.c
+++ b/profiles/network/server.c
@@ -327,8 +327,11 @@ static gboolean bnep_setup(GIOChannel *chan,
sk = g_io_channel_unix_get_fd(chan);
- /* Reading BNEP_SETUP_CONNECTION_REQUEST_MSG */
- n = read(sk, packet, sizeof(packet));
+ /*
+ * BNEP_SETUP_CONNECTION_REQUEST_MSG should be read and left in case
+ * of kernel setup connection msg handling.
+ */
+ n = recv(sk, packet, sizeof(packet), MSG_PEEK);
if (n < 0) {
error("read(): %s(%d)", strerror(errno), errno);
return FALSE;
diff --git a/tools/bneptest.c b/tools/bneptest.c
index 98ee9b1..a7d5815 100644
--- a/tools/bneptest.c
+++ b/tools/bneptest.c
@@ -327,7 +327,7 @@ static gboolean setup_bnep_cb(GIOChannel *chan, GIOCondition cond,
sk = g_io_channel_unix_get_fd(chan);
/* Reading BNEP_SETUP_CONNECTION_REQUEST_MSG */
- n = read(sk, packet, sizeof(packet));
+ n = recv(sk, packet, sizeof(packet), MSG_PEEK);
if (n < 0) {
error("read(): %s(%d)", strerror(errno), errno);
return FALSE;
--
2.1.0
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