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Commit 8b58a398 authored by Florian Westphal's avatar Florian Westphal Committed by David S. Miller
Browse files

ipv6: use flag instead of u16 for hop in inet6_skb_parm 



Hop was always either 0 or sizeof(struct ipv6hdr).

Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7c3d0d67

include/linux/ipv6.h

+1 −1
Original line number Diff line number Diff line
@@ -94,7 +94,6 @@ static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb) 
struct inet6_skb_parm {

	int			iif;

	__be16			ra;

	__u16			hop;

	__u16			dst0;

	__u16			srcrt;

	__u16			dst1;
@@ -111,6 +110,7 @@ struct inet6_skb_parm { 
#define IP6SKB_REROUTED		4

#define IP6SKB_ROUTERALERT	8

#define IP6SKB_FRAGMENTED      16

#define IP6SKB_HOPBYHOP        32

};



#define IP6CB(skb)	((struct inet6_skb_parm*)((skb)->cb))

net/ipv6/af_inet6.c

+2 −2
Original line number Diff line number Diff line
@@ -679,8 +679,8 @@ bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb, 
	const struct ipv6_pinfo *np = inet6_sk(sk);



	if (np->rxopt.all) {

		if ((opt->hop && (np->rxopt.bits.hopopts ||

				  np->rxopt.bits.ohopopts)) ||

		if (((opt->flags & IP6SKB_HOPBYHOP) &&

		     (np->rxopt.bits.hopopts || np->rxopt.bits.ohopopts)) ||

		    (ip6_flowinfo((struct ipv6hdr *) skb_network_header(skb)) &&

		     np->rxopt.bits.rxflow) ||

		    (opt->srcrt && (np->rxopt.bits.srcrt ||

net/ipv6/datagram.c

+4 −4
Original line number Diff line number Diff line
@@ -558,8 +558,8 @@ void ip6_datagram_recv_specific_ctl(struct sock *sk, struct msghdr *msg, 
	}



	/* HbH is allowed only once */

	if (np->rxopt.bits.hopopts && opt->hop) {

		u8 *ptr = nh + opt->hop;

	if (np->rxopt.bits.hopopts && (opt->flags & IP6SKB_HOPBYHOP)) {

		u8 *ptr = nh + sizeof(struct ipv6hdr);

		put_cmsg(msg, SOL_IPV6, IPV6_HOPOPTS, (ptr[1]+1)<<3, ptr);

	}
@@ -620,8 +620,8 @@ void ip6_datagram_recv_specific_ctl(struct sock *sk, struct msghdr *msg, 
		int hlim = ipv6_hdr(skb)->hop_limit;

		put_cmsg(msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);

	}

	if (np->rxopt.bits.ohopopts && opt->hop) {

		u8 *ptr = nh + opt->hop;

	if (np->rxopt.bits.ohopopts && (opt->flags & IP6SKB_HOPBYHOP)) {

		u8 *ptr = nh + sizeof(struct ipv6hdr);

		put_cmsg(msg, SOL_IPV6, IPV6_2292HOPOPTS, (ptr[1]+1)<<3, ptr);

	}

	if (np->rxopt.bits.odstopts && opt->dst0) {

net/ipv6/exthdrs.c

+1 −1
Original line number Diff line number Diff line
@@ -632,7 +632,7 @@ int ipv6_parse_hopopts(struct sk_buff *skb) 
		return -1;

	}



	opt->hop = sizeof(struct ipv6hdr);

	opt->flags |= IP6SKB_HOPBYHOP;

	if (ip6_parse_tlv(tlvprochopopt_lst, skb)) {

		skb->transport_header += (skb_transport_header(skb)[1] + 1) << 3;

		opt = IP6CB(skb);