ip.h (698365fa1874aa7635d51667a34a2842228e9837) ip.h (60ff746739bf805a912484643c720b6124826140)
1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * Definitions for the IP module.
7 *
8 * Version: @(#)ip.h 1.0.2 05/07/93

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264 inet_sk(sk)->pmtudisc != IP_PMTUDISC_OMIT;
265}
266
267static inline bool ip_sk_use_pmtu(const struct sock *sk)
268{
269 return inet_sk(sk)->pmtudisc < IP_PMTUDISC_PROBE;
270}
271
1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * Definitions for the IP module.
7 *
8 * Version: @(#)ip.h 1.0.2 05/07/93

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264 inet_sk(sk)->pmtudisc != IP_PMTUDISC_OMIT;
265}
266
267static inline bool ip_sk_use_pmtu(const struct sock *sk)
268{
269 return inet_sk(sk)->pmtudisc < IP_PMTUDISC_PROBE;
270}
271
272static inline bool ip_sk_local_df(const struct sock *sk)
272static inline bool ip_sk_ignore_df(const struct sock *sk)
273{
274 return inet_sk(sk)->pmtudisc < IP_PMTUDISC_DO ||
275 inet_sk(sk)->pmtudisc == IP_PMTUDISC_OMIT;
276}
277
278static inline unsigned int ip_dst_mtu_maybe_forward(const struct dst_entry *dst,
279 bool forwarding)
280{

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299}
300
301void __ip_select_ident(struct iphdr *iph, struct dst_entry *dst, int more);
302
303static inline void ip_select_ident(struct sk_buff *skb, struct dst_entry *dst, struct sock *sk)
304{
305 struct iphdr *iph = ip_hdr(skb);
306
273{
274 return inet_sk(sk)->pmtudisc < IP_PMTUDISC_DO ||
275 inet_sk(sk)->pmtudisc == IP_PMTUDISC_OMIT;
276}
277
278static inline unsigned int ip_dst_mtu_maybe_forward(const struct dst_entry *dst,
279 bool forwarding)
280{

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299}
300
301void __ip_select_ident(struct iphdr *iph, struct dst_entry *dst, int more);
302
303static inline void ip_select_ident(struct sk_buff *skb, struct dst_entry *dst, struct sock *sk)
304{
305 struct iphdr *iph = ip_hdr(skb);
306
307 if ((iph->frag_off & htons(IP_DF)) && !skb->local_df) {
307 if ((iph->frag_off & htons(IP_DF)) && !skb->ignore_df) {
308 /* This is only to work around buggy Windows95/2000
309 * VJ compression implementations. If the ID field
310 * does not change, they drop every other packet in
311 * a TCP stream using header compression.
312 */
313 iph->id = (sk && inet_sk(sk)->inet_daddr) ?
314 htons(inet_sk(sk)->inet_id++) : 0;
315 } else
316 __ip_select_ident(iph, dst, 0);
317}
318
319static inline void ip_select_ident_more(struct sk_buff *skb, struct dst_entry *dst, struct sock *sk, int more)
320{
321 struct iphdr *iph = ip_hdr(skb);
322
308 /* This is only to work around buggy Windows95/2000
309 * VJ compression implementations. If the ID field
310 * does not change, they drop every other packet in
311 * a TCP stream using header compression.
312 */
313 iph->id = (sk && inet_sk(sk)->inet_daddr) ?
314 htons(inet_sk(sk)->inet_id++) : 0;
315 } else
316 __ip_select_ident(iph, dst, 0);
317}
318
319static inline void ip_select_ident_more(struct sk_buff *skb, struct dst_entry *dst, struct sock *sk, int more)
320{
321 struct iphdr *iph = ip_hdr(skb);
322
323 if ((iph->frag_off & htons(IP_DF)) && !skb->local_df) {
323 if ((iph->frag_off & htons(IP_DF)) && !skb->ignore_df) {
324 if (sk && inet_sk(sk)->inet_daddr) {
325 iph->id = htons(inet_sk(sk)->inet_id);
326 inet_sk(sk)->inet_id += 1 + more;
327 } else
328 iph->id = 0;
329 } else
330 __ip_select_ident(iph, dst, more);
331}

--- 191 unchanged lines hidden --- 		324 if (sk && inet_sk(sk)->inet_daddr) {
325 iph->id = htons(inet_sk(sk)->inet_id);
326 inet_sk(sk)->inet_id += 1 + more;
327 } else
328 iph->id = 0;
329 } else
330 __ip_select_ident(iph, dst, more);
331}

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