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Commit d9edf9e2 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo Committed by David S. Miller
Browse files

[SK_BUFF]: Introduce igmp_hdr() & friends, remove skb->h.igmph 



Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cc70ab26

include/linux/igmp.h

+21 −0
Original line number Diff line number Diff line
@@ -80,6 +80,27 @@ struct igmpv3_query { 
	__be32 srcs[0];

};



#ifdef __KERNEL__

#include <linux/skbuff.h>



static inline struct igmphdr *igmp_hdr(const struct sk_buff *skb)

{

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

}



static inline struct igmpv3_report *

			igmpv3_report_hdr(const struct sk_buff *skb)

{

	return (struct igmpv3_report *)skb->h.raw;

}



static inline struct igmpv3_query *

			igmpv3_query_hdr(const struct sk_buff *skb)

{

	return (struct igmpv3_query *)skb->h.raw;

}

#endif



#define IGMP_HOST_MEMBERSHIP_QUERY	0x11	/* From RFC1112 */

#define IGMP_HOST_MEMBERSHIP_REPORT	0x12	/* Ditto */

#define IGMP_DVMRP			0x13	/* DVMRP routing */

include/linux/skbuff.h

+0 −1
Original line number Diff line number Diff line
@@ -240,7 +240,6 @@ struct sk_buff { 
		struct tcphdr	*th;

		struct udphdr	*uh;

		struct icmphdr	*icmph;

		struct igmphdr	*igmph;

		struct iphdr	*ipiph;

		struct ipv6hdr	*ipv6h;

		unsigned char	*raw;

net/ipv4/igmp.c

+11 −11
Original line number Diff line number Diff line
@@ -333,8 +333,8 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) 
	((u8*)&pip[1])[2] = 0;

	((u8*)&pip[1])[3] = 0;



	pig =(struct igmpv3_report *)skb_put(skb, sizeof(*pig));

	skb->h.igmph = (struct igmphdr *)pig;

	skb->h.raw = skb_put(skb, sizeof(*pig));

	pig = igmpv3_report_hdr(skb);

	pig->type = IGMPV3_HOST_MEMBERSHIP_REPORT;

	pig->resv1 = 0;

	pig->csum = 0;
@@ -346,13 +346,13 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) 
static int igmpv3_sendpack(struct sk_buff *skb)

{

	struct iphdr *pip = ip_hdr(skb);

	struct igmphdr *pig = skb->h.igmph;

	struct igmphdr *pig = igmp_hdr(skb);

	const int iplen = skb->tail - skb->nh.raw;

	const int igmplen = skb->tail - skb->h.raw;



	pip->tot_len = htons(iplen);

	ip_send_check(pip);

	pig->csum = ip_compute_csum(skb->h.igmph, igmplen);

	pig->csum = ip_compute_csum(igmp_hdr(skb), igmplen);



	return NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, skb->dev,

		       dst_output);
@@ -379,7 +379,7 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ip_mc_list *pmc, 
	pgr->grec_auxwords = 0;

	pgr->grec_nsrcs = 0;

	pgr->grec_mca = pmc->multiaddr;

	pih = (struct igmpv3_report *)skb->h.igmph;

	pih = igmpv3_report_hdr(skb);

	pih->ngrec = htons(ntohs(pih->ngrec)+1);

	*ppgr = pgr;

	return skb;
@@ -412,7 +412,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc, 
	if (!*psf_list)

		goto empty_source;



	pih = skb ? (struct igmpv3_report *)skb->h.igmph : NULL;

	pih = skb ? igmpv3_report_hdr(skb) : NULL;



	/* EX and TO_EX get a fresh packet, if needed */

	if (truncate) {
@@ -829,8 +829,8 @@ static void igmp_heard_report(struct in_device *in_dev, __be32 group) 
static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb,

	int len)

{

	struct igmphdr 		*ih = skb->h.igmph;

	struct igmpv3_query *ih3 = (struct igmpv3_query *)ih;

	struct igmphdr 		*ih = igmp_hdr(skb);

	struct igmpv3_query *ih3 = igmpv3_query_hdr(skb);

	struct ip_mc_list	*im;

	__be32			group = ih->group;

	int			max_delay;
@@ -863,12 +863,12 @@ static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb, 
		if (!pskb_may_pull(skb, sizeof(struct igmpv3_query)))

			return;



		ih3 = (struct igmpv3_query *) skb->h.raw;

		ih3 = igmpv3_query_hdr(skb);

		if (ih3->nsrcs) {

			if (!pskb_may_pull(skb, sizeof(struct igmpv3_query)

					   + ntohs(ih3->nsrcs)*sizeof(__be32)))

				return;

			ih3 = (struct igmpv3_query *) skb->h.raw;

			ih3 = igmpv3_query_hdr(skb);

		}



		max_delay = IGMPV3_MRC(ih3->code)*(HZ/IGMP_TIMER_SCALE);
@@ -945,7 +945,7 @@ int igmp_rcv(struct sk_buff *skb) 
			goto drop;

	}



	ih = skb->h.igmph;

	ih = igmp_hdr(skb);

	switch (ih->type) {

	case IGMP_HOST_MEMBERSHIP_QUERY:

		igmp_heard_query(in_dev, skb, len);

net/ipv4/ipmr.c

+1 −1
Original line number Diff line number Diff line
@@ -1430,7 +1430,7 @@ int pim_rcv_v1(struct sk_buff * skb) 
	if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(*encap)))

		goto drop;



	pim = (struct igmphdr*)skb->h.raw;

	pim = igmp_hdr(skb);



	if (!mroute_do_pim ||

	    skb->len < sizeof(*pim) + sizeof(*encap) ||