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Commit d77b3831 authored by Ying Xue's avatar Ying Xue Committed by David S. Miller
Browse files

tipc: eliminate redundant code with kfree_skb_list routine 



sk_buff lists are currently relased by looping over the list and
explicitly releasing each buffer.

We replace all occurrences of this loop with a call to kfree_skb_list().

Signed-off-by: default avatarYing Xue <ying.xue@windriver.com>
Reviewed-by: default avatarPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: default avatarJon Maloy <jon.maloy@ericsson.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4ba3f99a

net/tipc/link.c

+8 −50
Original line number Diff line number Diff line
@@ -386,14 +386,7 @@ void tipc_link_wakeup_ports(struct tipc_link *l_ptr, int all) 
 */

static void link_release_outqueue(struct tipc_link *l_ptr)

{

	struct sk_buff *buf = l_ptr->first_out;

	struct sk_buff *next;



	while (buf) {

		next = buf->next;

		kfree_skb(buf);

		buf = next;

	}

	kfree_skb_list(l_ptr->first_out);

	l_ptr->first_out = NULL;

	l_ptr->out_queue_size = 0;

}
@@ -415,32 +408,15 @@ void tipc_link_reset_fragments(struct tipc_link *l_ptr) 
 */

void tipc_link_stop(struct tipc_link *l_ptr)

{

	struct sk_buff *buf;

	struct sk_buff *next;



	buf = l_ptr->oldest_deferred_in;

	while (buf) {

		next = buf->next;

		kfree_skb(buf);

		buf = next;

	}



	buf = l_ptr->first_out;

	while (buf) {

		next = buf->next;

		kfree_skb(buf);

		buf = next;

	}



	kfree_skb_list(l_ptr->oldest_deferred_in);

	kfree_skb_list(l_ptr->first_out);

	tipc_link_reset_fragments(l_ptr);



	kfree_skb(l_ptr->proto_msg_queue);

	l_ptr->proto_msg_queue = NULL;

}



void tipc_link_reset(struct tipc_link *l_ptr)

{

	struct sk_buff *buf;

	u32 prev_state = l_ptr->state;

	u32 checkpoint = l_ptr->next_in_no;

	int was_active_link = tipc_link_is_active(l_ptr);
@@ -471,12 +447,7 @@ void tipc_link_reset(struct tipc_link *l_ptr) 
	link_release_outqueue(l_ptr);

	kfree_skb(l_ptr->proto_msg_queue);

	l_ptr->proto_msg_queue = NULL;

	buf = l_ptr->oldest_deferred_in;

	while (buf) {

		struct sk_buff *next = buf->next;

		kfree_skb(buf);

		buf = next;

	}

	kfree_skb_list(l_ptr->oldest_deferred_in);

	if (!list_empty(&l_ptr->waiting_ports))

		tipc_link_wakeup_ports(l_ptr, 1);
@@ -1124,10 +1095,7 @@ static int link_send_sections_long(struct tipc_port *sender, 
		if (copy_from_user(buf->data + fragm_crs, sect_crs, sz)) {

			res = -EFAULT;

error:

			for (; buf_chain; buf_chain = buf) {

				buf = buf_chain->next;

				kfree_skb(buf_chain);

			}

			kfree_skb_list(buf_chain);

			return res;

		}

		sect_crs += sz;
@@ -1177,18 +1145,12 @@ static int link_send_sections_long(struct tipc_port *sender, 
		if (l_ptr->max_pkt < max_pkt) {

			sender->max_pkt = l_ptr->max_pkt;

			tipc_node_unlock(node);

			for (; buf_chain; buf_chain = buf) {

				buf = buf_chain->next;

				kfree_skb(buf_chain);

			}

			kfree_skb_list(buf_chain);

			goto again;

		}

	} else {

reject:

		for (; buf_chain; buf_chain = buf) {

			buf = buf_chain->next;

			kfree_skb(buf_chain);

		}

		kfree_skb_list(buf_chain);

		return tipc_port_reject_sections(sender, hdr, msg_sect,

						 len, TIPC_ERR_NO_NODE);

	}
@@ -2283,11 +2245,7 @@ static int link_send_long_buf(struct tipc_link *l_ptr, struct sk_buff *buf) 
		fragm = tipc_buf_acquire(fragm_sz + INT_H_SIZE);

		if (fragm == NULL) {

			kfree_skb(buf);

			while (buf_chain) {

				buf = buf_chain;

				buf_chain = buf_chain->next;

				kfree_skb(buf);

			}

			kfree_skb_list(buf_chain);

			return -ENOMEM;

		}

		msg_set_size(&fragm_hdr, fragm_sz + INT_H_SIZE);

net/tipc/node.c

+1 −5
Original line number Diff line number Diff line
@@ -291,11 +291,7 @@ static void node_lost_contact(struct tipc_node *n_ptr) 


	/* Flush broadcast link info associated with lost node */

	if (n_ptr->bclink.recv_permitted) {

		while (n_ptr->bclink.deferred_head) {

			struct sk_buff *buf = n_ptr->bclink.deferred_head;

			n_ptr->bclink.deferred_head = buf->next;

			kfree_skb(buf);

		}

		kfree_skb_list(n_ptr->bclink.deferred_head);

		n_ptr->bclink.deferred_size = 0;



		if (n_ptr->bclink.reasm_head) {