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Commit 2c0fd387 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo Committed by David S. Miller
Browse files

[SCTP]: Introduce sctp_hdr() 



For consistency with all the other skb->h.raw accessors.

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 967b05f6

include/linux/sctp.h

+9 −0
Original line number Diff line number Diff line
@@ -63,6 +63,15 @@ typedef struct sctphdr { 
	__be32 checksum;

} __attribute__((packed)) sctp_sctphdr_t;



#ifdef __KERNEL__

#include <linux/skbuff.h>



static inline struct sctphdr *sctp_hdr(const struct sk_buff *skb)

{

	return (struct sctphdr *)skb->h.raw;

}

#endif



/* Section 3.2.  Chunk Field Descriptions. */

typedef struct sctp_chunkhdr {

	__u8 type;

net/sctp/input.c

+5 −9
Original line number Diff line number Diff line
@@ -79,14 +79,10 @@ static void sctp_add_backlog(struct sock *sk, struct sk_buff *skb); 
/* Calculate the SCTP checksum of an SCTP packet.  */

static inline int sctp_rcv_checksum(struct sk_buff *skb)

{

	struct sctphdr *sh;

	__u32 cmp, val;

	struct sk_buff *list = skb_shinfo(skb)->frag_list;



	sh = (struct sctphdr *) skb->h.raw;

	cmp = ntohl(sh->checksum);



	val = sctp_start_cksum((__u8 *)sh, skb_headlen(skb));

	struct sctphdr *sh = sctp_hdr(skb);

	__u32 cmp = ntohl(sh->checksum);

	__u32 val = sctp_start_cksum((__u8 *)sh, skb_headlen(skb));



	for (; list; list = list->next)

		val = sctp_update_cksum((__u8 *)list->data, skb_headlen(list),
@@ -138,7 +134,7 @@ int sctp_rcv(struct sk_buff *skb) 
	if (skb_linearize(skb))

		goto discard_it;



	sh = (struct sctphdr *) skb->h.raw;

	sh = sctp_hdr(skb);



	/* Pull up the IP and SCTP headers. */

	__skb_pull(skb, skb_transport_offset(skb));
@@ -905,7 +901,7 @@ static struct sctp_association *__sctp_rcv_init_lookup(struct sk_buff *skb, 
	struct sctp_association *asoc;

	union sctp_addr addr;

	union sctp_addr *paddr = &addr;

	struct sctphdr *sh = (struct sctphdr *) skb->h.raw;

	struct sctphdr *sh = sctp_hdr(skb);

	sctp_chunkhdr_t *ch;

	union sctp_params params;

	sctp_init_chunk_t *init;

net/sctp/ipv6.c

+2 −2
Original line number Diff line number Diff line
@@ -390,7 +390,7 @@ static void sctp_v6_from_skb(union sctp_addr *addr,struct sk_buff *skb, 
	addr->v6.sin6_flowinfo = 0; /* FIXME */

	addr->v6.sin6_scope_id = ((struct inet6_skb_parm *)skb->cb)->iif;



	sh = (struct sctphdr *) skb->h.raw;

	sh = sctp_hdr(skb);

	if (is_saddr) {

		*port  = sh->source;

		from = &ipv6_hdr(skb)->saddr;
@@ -765,7 +765,7 @@ static void sctp_inet6_skb_msgname(struct sk_buff *skb, char *msgname, 
	if (msgname) {

		sctp_inet6_msgname(msgname, addr_len);

		sin6 = (struct sockaddr_in6 *)msgname;

		sh = (struct sctphdr *)skb->h.raw;

		sh = sctp_hdr(skb);

		sin6->sin6_port = sh->source;



		/* Map ipv4 address into v4-mapped-on-v6 address. */

net/sctp/protocol.c

+4 −6
Original line number Diff line number Diff line
@@ -235,7 +235,7 @@ static void sctp_v4_from_skb(union sctp_addr *addr, struct sk_buff *skb, 
	port = &addr->v4.sin_port;

	addr->v4.sin_family = AF_INET;



	sh = (struct sctphdr *) skb->h.raw;

	sh = sctp_hdr(skb);

	if (is_saddr) {

		*port  = sh->source;

		from = &ip_hdr(skb)->saddr;
@@ -731,13 +731,11 @@ static void sctp_inet_event_msgname(struct sctp_ulpevent *event, char *msgname, 
/* Initialize and copy out a msgname from an inbound skb. */

static void sctp_inet_skb_msgname(struct sk_buff *skb, char *msgname, int *len)

{

	struct sctphdr *sh;

	struct sockaddr_in *sin;



	if (msgname) {

		struct sctphdr *sh = sctp_hdr(skb);

		struct sockaddr_in *sin = (struct sockaddr_in *)msgname;



		sctp_inet_msgname(msgname, len);

		sin = (struct sockaddr_in *)msgname;

		sh = (struct sctphdr *)skb->h.raw;

		sin->sin_port = sh->source;

		sin->sin_addr.s_addr = ip_hdr(skb)->saddr;

	}