[IrDA]: Use alloc_skb() in IrDA TX path
Samuel Ortiz [Fri, 21 Jul 2006 21:50:41 +0000 (14:50 -0700)]
As pointed out by Christoph Hellwig, dev_alloc_skb() is not intended to be
used for allocating TX sk_buff. The IrDA stack was exclusively calling
dev_alloc_skb() on the TX path, and this patch fixes that.

Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

12 files changed:
net/irda/af_irda.c
net/irda/ircomm/ircomm_lmp.c
net/irda/ircomm/ircomm_param.c
net/irda/ircomm/ircomm_tty.c
net/irda/iriap.c
net/irda/iriap_event.c
net/irda/irlan/irlan_common.c
net/irda/irlan/irlan_provider.c
net/irda/irlap.c
net/irda/irlap_frame.c
net/irda/irlmp.c
net/irda/irttp.c

index 7fae48a..17699ee 100644 (file)
@@ -308,7 +308,7 @@ static void irda_connect_response(struct irda_sock *self)
 
        IRDA_ASSERT(self != NULL, return;);
 
-       skb = dev_alloc_skb(64);
+       skb = alloc_skb(64, GFP_ATOMIC);
        if (skb == NULL) {
                IRDA_DEBUG(0, "%s() Unable to allocate sk_buff!\n",
                           __FUNCTION__);
index d909720..959874b 100644 (file)
@@ -81,7 +81,7 @@ static int ircomm_lmp_connect_response(struct ircomm_cb *self,
        
        /* Any userdata supplied? */
        if (userdata == NULL) {
-               tx_skb = dev_alloc_skb(64);
+               tx_skb = alloc_skb(64, GFP_ATOMIC);
                if (!tx_skb)
                        return -ENOMEM;
 
@@ -115,7 +115,7 @@ static int ircomm_lmp_disconnect_request(struct ircomm_cb *self,
        IRDA_DEBUG(0, "%s()\n", __FUNCTION__ );
 
         if (!userdata) {
-               tx_skb = dev_alloc_skb(64);
+               tx_skb = alloc_skb(64, GFP_ATOMIC);
                if (!tx_skb)
                        return -ENOMEM;
                
index 6009bab..a39f573 100644 (file)
@@ -121,7 +121,7 @@ int ircomm_param_request(struct ircomm_tty_cb *self, __u8 pi, int flush)
 
        skb = self->ctrl_skb;   
        if (!skb) {
-               skb = dev_alloc_skb(256);
+               skb = alloc_skb(256, GFP_ATOMIC);
                if (!skb) {
                        spin_unlock_irqrestore(&self->spinlock, flags);
                        return -ENOMEM;
index b400f27..cde3b84 100644 (file)
@@ -759,8 +759,9 @@ static int ircomm_tty_write(struct tty_struct *tty,
                        }
                } else {
                        /* Prepare a full sized frame */
-                       skb = dev_alloc_skb(self->max_data_size+
-                                           self->max_header_size);
+                       skb = alloc_skb(self->max_data_size+
+                                       self->max_header_size,
+                                       GFP_ATOMIC);
                        if (!skb) {
                                spin_unlock_irqrestore(&self->spinlock, flags);
                                return -ENOBUFS;
index a047265..61128aa 100644 (file)
@@ -345,7 +345,7 @@ static void iriap_disconnect_request(struct iriap_cb *self)
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
 
-       tx_skb = dev_alloc_skb(64);
+       tx_skb = alloc_skb(64, GFP_ATOMIC);
        if (tx_skb == NULL) {
                IRDA_DEBUG(0, "%s(), Could not allocate an sk_buff of length %d\n", 
                        __FUNCTION__, 64);
@@ -396,7 +396,7 @@ int iriap_getvaluebyclass_request(struct iriap_cb *self,
        attr_len = strlen(attr);        /* Up to IAS_MAX_ATTRIBNAME = 60 */
 
        skb_len = self->max_header_size+2+name_len+1+attr_len+4;
-       tx_skb = dev_alloc_skb(skb_len);
+       tx_skb = alloc_skb(skb_len, GFP_ATOMIC);
        if (!tx_skb)
                return -ENOMEM;
 
@@ -562,7 +562,8 @@ static void iriap_getvaluebyclass_response(struct iriap_cb *self,
         *  value. We add 32 bytes because of the 6 bytes for the frame and
         *  max 5 bytes for the value coding.
         */
-       tx_skb = dev_alloc_skb(value->len + self->max_header_size + 32);
+       tx_skb = alloc_skb(value->len + self->max_header_size + 32,
+                          GFP_ATOMIC);
        if (!tx_skb)
                return;
 
@@ -700,7 +701,7 @@ void iriap_send_ack(struct iriap_cb *self)
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
 
-       tx_skb = dev_alloc_skb(64);
+       tx_skb = alloc_skb(64, GFP_ATOMIC);
        if (!tx_skb)
                return;
 
index a736074..da17395 100644 (file)
@@ -365,7 +365,7 @@ static void state_r_disconnect(struct iriap_cb *self, IRIAP_EVENT event,
 
        switch (event) {
        case IAP_LM_CONNECT_INDICATION:
-               tx_skb = dev_alloc_skb(64);
+               tx_skb = alloc_skb(64, GFP_ATOMIC);
                if (tx_skb == NULL) {
                        IRDA_WARNING("%s: unable to malloc!\n", __FUNCTION__);
                        return;
index bd659dd..7dd0a2f 100644 (file)
@@ -636,7 +636,7 @@ void irlan_get_provider_info(struct irlan_cb *self)
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
 
-       skb = dev_alloc_skb(64);
+       skb = alloc_skb(64, GFP_ATOMIC);
        if (!skb)
                return;
 
@@ -668,7 +668,7 @@ void irlan_open_data_channel(struct irlan_cb *self)
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
        
-       skb = dev_alloc_skb(64);
+       skb = alloc_skb(64, GFP_ATOMIC);
        if (!skb)
                return;
 
@@ -704,7 +704,7 @@ void irlan_close_data_channel(struct irlan_cb *self)
        if (self->client.tsap_ctrl == NULL)
                return;
 
-       skb = dev_alloc_skb(64);
+       skb = alloc_skb(64, GFP_ATOMIC);
        if (!skb)
                return;
 
@@ -739,7 +739,7 @@ static void irlan_open_unicast_addr(struct irlan_cb *self)
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);       
        
-       skb = dev_alloc_skb(128);
+       skb = alloc_skb(128, GFP_ATOMIC);
        if (!skb)
                return;
 
@@ -777,7 +777,7 @@ void irlan_set_broadcast_filter(struct irlan_cb *self, int status)
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
        
-       skb = dev_alloc_skb(128);
+       skb = alloc_skb(128, GFP_ATOMIC);
        if (!skb)
                return;
 
@@ -816,7 +816,7 @@ void irlan_set_multicast_filter(struct irlan_cb *self, int status)
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
 
-       skb = dev_alloc_skb(128);
+       skb = alloc_skb(128, GFP_ATOMIC);
        if (!skb)
                return;
        
@@ -856,7 +856,7 @@ static void irlan_get_unicast_addr(struct irlan_cb *self)
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
        
-       skb = dev_alloc_skb(128);
+       skb = alloc_skb(128, GFP_ATOMIC);
        if (!skb)
                return;
 
@@ -891,7 +891,7 @@ void irlan_get_media_char(struct irlan_cb *self)
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
        
-       skb = dev_alloc_skb(64);
+       skb = alloc_skb(64, GFP_ATOMIC);
        if (!skb)
                return;
 
index 39c202d..9c0df86 100644 (file)
@@ -296,7 +296,7 @@ void irlan_provider_send_reply(struct irlan_cb *self, int command,
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
 
-       skb = dev_alloc_skb(128);
+       skb = alloc_skb(128, GFP_ATOMIC);
        if (!skb)
                return;
 
index cade355..9199c12 100644 (file)
@@ -882,7 +882,7 @@ static void irlap_change_speed(struct irlap_cb *self, __u32 speed, int now)
        /* Change speed now, or just piggyback speed on frames */
        if (now) {
                /* Send down empty frame to trigger speed change */
-               skb = dev_alloc_skb(0);
+               skb = alloc_skb(0, GFP_ATOMIC);
                if (skb)
                        irlap_queue_xmit(self, skb);
        }
index 3e9a06a..fa5c144 100644 (file)
@@ -117,7 +117,7 @@ void irlap_send_snrm_frame(struct irlap_cb *self, struct qos_info *qos)
        IRDA_ASSERT(self->magic == LAP_MAGIC, return;);
 
        /* Allocate frame */
-       tx_skb = dev_alloc_skb(64);
+       tx_skb = alloc_skb(64, GFP_ATOMIC);
        if (!tx_skb)
                return;
 
@@ -210,7 +210,7 @@ void irlap_send_ua_response_frame(struct irlap_cb *self, struct qos_info *qos)
        IRDA_ASSERT(self->magic == LAP_MAGIC, return;);
 
        /* Allocate frame */
-       tx_skb = dev_alloc_skb(64);
+       tx_skb = alloc_skb(64, GFP_ATOMIC);
        if (!tx_skb)
                return;
 
@@ -250,7 +250,7 @@ void irlap_send_dm_frame( struct irlap_cb *self)
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == LAP_MAGIC, return;);
 
-       tx_skb = dev_alloc_skb(32);
+       tx_skb = alloc_skb(32, GFP_ATOMIC);
        if (!tx_skb)
                return;
 
@@ -282,7 +282,7 @@ void irlap_send_disc_frame(struct irlap_cb *self)
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == LAP_MAGIC, return;);
 
-       tx_skb = dev_alloc_skb(16);
+       tx_skb = alloc_skb(16, GFP_ATOMIC);
        if (!tx_skb)
                return;
 
@@ -315,7 +315,7 @@ void irlap_send_discovery_xid_frame(struct irlap_cb *self, int S, __u8 s,
        IRDA_ASSERT(self->magic == LAP_MAGIC, return;);
        IRDA_ASSERT(discovery != NULL, return;);
 
-       tx_skb = dev_alloc_skb(64);
+       tx_skb = alloc_skb(64, GFP_ATOMIC);
        if (!tx_skb)
                return;
 
@@ -576,7 +576,7 @@ void irlap_send_rr_frame(struct irlap_cb *self, int command)
        struct sk_buff *tx_skb;
        __u8 *frame;
 
-       tx_skb = dev_alloc_skb(16);
+       tx_skb = alloc_skb(16, GFP_ATOMIC);
        if (!tx_skb)
                return;
 
@@ -601,7 +601,7 @@ void irlap_send_rd_frame(struct irlap_cb *self)
        struct sk_buff *tx_skb;
        __u8 *frame;
 
-       tx_skb = dev_alloc_skb(16);
+       tx_skb = alloc_skb(16, GFP_ATOMIC);
        if (!tx_skb)
                return;
 
@@ -1215,7 +1215,7 @@ void irlap_send_test_frame(struct irlap_cb *self, __u8 caddr, __u32 daddr,
        struct test_frame *frame;
        __u8 *info;
 
-       tx_skb = dev_alloc_skb(cmd->len+sizeof(struct test_frame));
+       tx_skb = alloc_skb(cmd->len+sizeof(struct test_frame), GFP_ATOMIC);
        if (!tx_skb)
                return;
 
index 129ad64..5ee7946 100644 (file)
@@ -395,7 +395,7 @@ int irlmp_connect_request(struct lsap_cb *self, __u8 dlsap_sel,
 
        /* Any userdata? */
        if (tx_skb == NULL) {
-               tx_skb = dev_alloc_skb(64);
+               tx_skb = alloc_skb(64, GFP_ATOMIC);
                if (!tx_skb)
                        return -ENOMEM;
 
index 49c51c5..7a3ccb8 100644 (file)
@@ -306,7 +306,8 @@ static inline void irttp_fragment_skb(struct tsap_cb *self,
                IRDA_DEBUG(2, "%s(), fragmenting ...\n", __FUNCTION__);
 
                /* Make new segment */
-               frag = dev_alloc_skb(self->max_seg_size+self->max_header_size);
+               frag = alloc_skb(self->max_seg_size+self->max_header_size,
+                                GFP_ATOMIC);
                if (!frag)
                        return;
 
@@ -805,7 +806,7 @@ static inline void irttp_give_credit(struct tsap_cb *self)
                   self->send_credit, self->avail_credit, self->remote_credit);
 
        /* Give credit to peer */
-       tx_skb = dev_alloc_skb(64);
+       tx_skb = alloc_skb(64, GFP_ATOMIC);
        if (!tx_skb)
                return;
 
@@ -1094,7 +1095,7 @@ int irttp_connect_request(struct tsap_cb *self, __u8 dtsap_sel,
 
        /* Any userdata supplied? */
        if (userdata == NULL) {
-               tx_skb = dev_alloc_skb(64);
+               tx_skb = alloc_skb(64, GFP_ATOMIC);
                if (!tx_skb)
                        return -ENOMEM;
 
@@ -1342,7 +1343,7 @@ int irttp_connect_response(struct tsap_cb *self, __u32 max_sdu_size,
 
        /* Any userdata supplied? */
        if (userdata == NULL) {
-               tx_skb = dev_alloc_skb(64);
+               tx_skb = alloc_skb(64, GFP_ATOMIC);
                if (!tx_skb)
                        return -ENOMEM;
 
@@ -1541,7 +1542,7 @@ int irttp_disconnect_request(struct tsap_cb *self, struct sk_buff *userdata,
 
        if (!userdata) {
                struct sk_buff *tx_skb;
-               tx_skb = dev_alloc_skb(64);
+               tx_skb = alloc_skb(64, GFP_ATOMIC);
                if (!tx_skb)
                        return -ENOMEM;