Return-Path: From: Bruna Moreira To: linux-bluetooth@vger.kernel.org Cc: Bruna Moreira Subject: [PATCH 2/5] Add internal buffer to GAttrib struct Date: Wed, 16 Mar 2011 07:25:09 -0400 Message-Id: <1300274712-3931-2-git-send-email-bruna.moreira@openbossa.org> In-Reply-To: <1300274712-3931-1-git-send-email-bruna.moreira@openbossa.org> References: <1300274712-3931-1-git-send-email-bruna.moreira@openbossa.org> Sender: linux-bluetooth-owner@vger.kernel.org List-ID: The new buffer is allocated in g_attrib_new() and it will be used to send/receive PDUs. The buffer size is the MTU read from L2CAP channel limited to ATT_MAX_MTU. Functions to handle the buffer size were also created. --- attrib/gattrib.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ attrib/gattrib.h | 3 +++ 2 files changed, 49 insertions(+), 0 deletions(-) diff --git a/attrib/gattrib.c b/attrib/gattrib.c index 07e56de..ba168e7 100644 --- a/attrib/gattrib.c +++ b/attrib/gattrib.c @@ -40,6 +40,8 @@ struct _GAttrib { GIOChannel *io; gint refs; + uint8_t *buf; + int buflen; guint read_watch; guint write_watch; guint timeout_watch; @@ -193,6 +195,8 @@ static void attrib_destroy(GAttrib *attrib) g_io_channel_unref(attrib->io); } + g_free(attrib->buf); + if (attrib->destroy) attrib->destroy(attrib->destroy_user_data); @@ -386,6 +390,7 @@ done: GAttrib *g_attrib_new(GIOChannel *io) { struct _GAttrib *attrib; + uint16_t omtu; g_io_channel_set_encoding(io, NULL, NULL); g_io_channel_set_buffered(io, FALSE); @@ -401,6 +406,17 @@ GAttrib *g_attrib_new(GIOChannel *io) G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL, received_data, attrib); + if (bt_io_get(attrib->io, BT_IO_L2CAP, NULL, + BT_IO_OPT_OMTU, &omtu, + BT_IO_OPT_INVALID)) { + if (omtu > ATT_MAX_MTU) + omtu = ATT_MAX_MTU; + } else + omtu = ATT_DEFAULT_LE_MTU; + + attrib->buf = g_malloc0(omtu); + attrib->buflen = omtu; + return g_attrib_ref(attrib); } @@ -504,6 +520,36 @@ gboolean g_attrib_set_debug(GAttrib *attrib, return TRUE; } +uint8_t *g_attrib_get_buffer(GAttrib *attrib, int *len) +{ + if (len == NULL) + return NULL; + + *len = attrib->buflen; + + return attrib->buf; +} + +gboolean g_attrib_set_buffer(GAttrib *attrib, int mtu) +{ + if (mtu < ATT_DEFAULT_LE_MTU) + mtu = ATT_DEFAULT_LE_MTU; + + if (mtu > ATT_MAX_MTU) + mtu = ATT_MAX_MTU; + + if (!bt_io_set(attrib->io, BT_IO_L2CAP, NULL, + BT_IO_OPT_OMTU, mtu, + BT_IO_OPT_INVALID)) + return FALSE; + + attrib->buf = g_realloc(attrib->buf, mtu); + + attrib->buflen = mtu; + + return TRUE; +} + guint g_attrib_register(GAttrib *attrib, guint8 opcode, GAttribNotifyFunc func, gpointer user_data, GDestroyNotify notify) diff --git a/attrib/gattrib.h b/attrib/gattrib.h index f25208d..0211068 100644 --- a/attrib/gattrib.h +++ b/attrib/gattrib.h @@ -68,6 +68,9 @@ guint g_attrib_register(GAttrib *attrib, guint8 opcode, gboolean g_attrib_is_encrypted(GAttrib *attrib); +uint8_t *g_attrib_get_buffer(GAttrib *attrib, int *len); +gboolean g_attrib_set_buffer(GAttrib *attrib, int mtu); + gboolean g_attrib_unregister(GAttrib *attrib, guint id); gboolean g_attrib_unregister_all(GAttrib *attrib); -- 1.7.0.4