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WSL2-Linux-Kernel
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net: rename local_df to ignore_df 

As suggested by several people, rename local_df to ignore_df,
since it means "ignore df bit if it is set".

Cc: Maciej Żenczykowski <maze@google.com>
Cc: Florian Westphal <fw@strlen.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
WANG Cong 2014-05-04 16:39:18 -07:00 коммит произвёл David S. Miller
Родитель 5f013c9bc7
Коммит 60ff746739
17 изменённых файлов: 42 добавлений и 42 удалений
Показать статистику Скачать Patch файл Скачать Diff файл Показать все файлы Свернуть все файлы

4
include/linux/skbuff.h
Просмотреть файл

@ -426,7 +426,7 @@ static inline u32 skb_mstamp_us_delta(const struct skb_mstamp *t1,
* @csum_start: Offset from skb->head where checksumming should start
* @csum_offset: Offset from csum_start where checksum should be stored
* @priority: Packet queueing priority
* @local_df: allow local fragmentation
* @ignore_df: allow local fragmentation
* @cloned: Head may be cloned (check refcnt to be sure)
* @ip_summed: Driver fed us an IP checksum
* @nohdr: Payload reference only, must not modify header
@ -514,7 +514,7 @@ struct sk_buff {
};
__u32 priority;
kmemcheck_bitfield_begin(flags1);
__u8 local_df:1,
__u8 ignore_df:1,
cloned:1,
ip_summed:2,
nohdr:1,

6
include/net/ip.h
Просмотреть файл

@ -269,7 +269,7 @@ static inline bool ip_sk_use_pmtu(const struct sock *sk)
return inet_sk(sk)->pmtudisc < IP_PMTUDISC_PROBE;
}
static inline bool ip_sk_local_df(const struct sock *sk)
static inline bool ip_sk_ignore_df(const struct sock *sk)
{
return inet_sk(sk)->pmtudisc < IP_PMTUDISC_DO ||
inet_sk(sk)->pmtudisc == IP_PMTUDISC_OMIT;
@ -304,7 +304,7 @@ static inline void ip_select_ident(struct sk_buff *skb, struct dst_entry *dst, s
{
struct iphdr *iph = ip_hdr(skb);
if ((iph->frag_off & htons(IP_DF)) && !skb->local_df) {
if ((iph->frag_off & htons(IP_DF)) && !skb->ignore_df) {
/* This is only to work around buggy Windows95/2000
* VJ compression implementations. If the ID field
* does not change, they drop every other packet in
@ -320,7 +320,7 @@ static inline void ip_select_ident_more(struct sk_buff *skb, struct dst_entry *d
{
struct iphdr *iph = ip_hdr(skb);
if ((iph->frag_off & htons(IP_DF)) && !skb->local_df) {
if ((iph->frag_off & htons(IP_DF)) && !skb->ignore_df) {
if (sk && inet_sk(sk)->inet_daddr) {
iph->id = htons(inet_sk(sk)->inet_id);
inet_sk(sk)->inet_id += 1 + more;

2
include/net/ip6_route.h
Просмотреть файл

@ -185,7 +185,7 @@ static inline bool ip6_sk_accept_pmtu(const struct sock *sk)
inet6_sk(sk)->pmtudisc != IPV6_PMTUDISC_OMIT;
}
static inline bool ip6_sk_local_df(const struct sock *sk)
static inline bool ip6_sk_ignore_df(const struct sock *sk)
{
return inet6_sk(sk)->pmtudisc < IPV6_PMTUDISC_DO ||
inet6_sk(sk)->pmtudisc == IPV6_PMTUDISC_OMIT;

4
net/core/skbuff.c
Просмотреть файл

@ -694,7 +694,7 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
#endif
memcpy(new->cb, old->cb, sizeof(old->cb));
new->csum = old->csum;
new->local_df = old->local_df;
new->ignore_df = old->ignore_df;
new->pkt_type = old->pkt_type;
new->ip_summed = old->ip_summed;
skb_copy_queue_mapping(new, old);
@ -3913,7 +3913,7 @@ void skb_scrub_packet(struct sk_buff *skb, bool xnet)
skb->tstamp.tv64 = 0;
skb->pkt_type = PACKET_HOST;
skb->skb_iif = 0;
skb->local_df = 0;
skb->ignore_df = 0;
skb_dst_drop(skb);
skb->mark = 0;
secpath_reset(skb);

2
net/ipv4/ip_forward.c
Просмотреть файл

@ -42,7 +42,7 @@
static bool ip_may_fragment(const struct sk_buff *skb)
{
return unlikely((ip_hdr(skb)->frag_off & htons(IP_DF)) == 0) ||
skb->local_df;
skb->ignore_df;
}
static bool ip_exceeds_mtu(const struct sk_buff *skb, unsigned int mtu)

12
net/ipv4/ip_output.c
Просмотреть файл

@ -415,7 +415,7 @@ packet_routed:
skb_reset_network_header(skb);
iph = ip_hdr(skb);
*((__be16 *)iph) = htons((4 << 12) | (5 << 8) | (inet->tos & 0xff));
if (ip_dont_fragment(sk, &rt->dst) && !skb->local_df)
if (ip_dont_fragment(sk, &rt->dst) && !skb->ignore_df)
iph->frag_off = htons(IP_DF);
else
iph->frag_off = 0;
@ -501,7 +501,7 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
iph = ip_hdr(skb);
mtu = ip_skb_dst_mtu(skb);
if (unlikely(((iph->frag_off & htons(IP_DF)) && !skb->local_df) ||
if (unlikely(((iph->frag_off & htons(IP_DF)) && !skb->ignore_df) ||
(IPCB(skb)->frag_max_size &&
IPCB(skb)->frag_max_size > mtu))) {
IP_INC_STATS(dev_net(dev), IPSTATS_MIB_FRAGFAILS);
@ -866,7 +866,7 @@ static int __ip_append_data(struct sock *sk,
fragheaderlen = sizeof(struct iphdr) + (opt ? opt->optlen : 0);
maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen;
maxnonfragsize = ip_sk_local_df(sk) ? 0xFFFF : mtu;
maxnonfragsize = ip_sk_ignore_df(sk) ? 0xFFFF : mtu;
if (cork->length + length > maxnonfragsize - fragheaderlen) {
ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport,
@ -1189,7 +1189,7 @@ ssize_t ip_append_page(struct sock *sk, struct flowi4 *fl4, struct page *page,
fragheaderlen = sizeof(struct iphdr) + (opt ? opt->optlen : 0);
maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen;
maxnonfragsize = ip_sk_local_df(sk) ? 0xFFFF : mtu;
maxnonfragsize = ip_sk_ignore_df(sk) ? 0xFFFF : mtu;
if (cork->length + size > maxnonfragsize - fragheaderlen) {
ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport,
@ -1350,10 +1350,10 @@ struct sk_buff *__ip_make_skb(struct sock *sk,
* to fragment the frame generated here. No matter, what transforms
* how transforms change size of the packet, it will come out.
*/
skb->local_df = ip_sk_local_df(sk);
skb->ignore_df = ip_sk_ignore_df(sk);
/* DF bit is set when we want to see DF on outgoing frames.
* If local_df is set too, we still allow to fragment this frame
* If ignore_df is set too, we still allow to fragment this frame
* locally. */
if (inet->pmtudisc == IP_PMTUDISC_DO ||
inet->pmtudisc == IP_PMTUDISC_PROBE ||

2
net/ipv4/netfilter/nf_defrag_ipv4.c
Просмотреть файл

@ -34,7 +34,7 @@ static int nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user)
if (!err) {
ip_send_check(ip_hdr(skb));
skb->local_df = 1;
skb->ignore_df = 1;
}
return err;

2
net/ipv4/xfrm4_output.c
Просмотреть файл

@ -25,7 +25,7 @@ static int xfrm4_tunnel_check_size(struct sk_buff *skb)
if (IPCB(skb)->flags & IPSKB_XFRM_TUNNEL_SIZE)
goto out;
if (!(ip_hdr(skb)->frag_off & htons(IP_DF)) || skb->local_df)
if (!(ip_hdr(skb)->frag_off & htons(IP_DF)) || skb->ignore_df)
goto out;
mtu = dst_mtu(skb_dst(skb));

12
net/ipv6/ip6_output.c
Просмотреть файл

@ -219,7 +219,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6,
skb->mark = sk->sk_mark;
mtu = dst_mtu(dst);
if ((skb->len <= mtu) || skb->local_df || skb_is_gso(skb)) {
if ((skb->len <= mtu) || skb->ignore_df || skb_is_gso(skb)) {
IP6_UPD_PO_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_OUT, skb->len);
return NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, skb, NULL,
@ -347,11 +347,11 @@ static bool ip6_pkt_too_big(const struct sk_buff *skb, unsigned int mtu)
if (skb->len <= mtu)
return false;
/* ipv6 conntrack defrag sets max_frag_size + local_df */
/* ipv6 conntrack defrag sets max_frag_size + ignore_df */
if (IP6CB(skb)->frag_max_size && IP6CB(skb)->frag_max_size > mtu)
return true;
if (skb->local_df)
if (skb->ignore_df)
return false;
if (skb_is_gso(skb) && skb_gso_network_seglen(skb) <= mtu)
@ -559,7 +559,7 @@ int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
/* We must not fragment if the socket is set to force MTU discovery
* or if the skb it not generated by a local socket.
*/
if (unlikely(!skb->local_df && skb->len > mtu) ||
if (unlikely(!skb->ignore_df && skb->len > mtu) ||
(IP6CB(skb)->frag_max_size &&
IP6CB(skb)->frag_max_size > mtu)) {
if (skb->sk && dst_allfrag(skb_dst(skb)))
@ -1234,7 +1234,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
sizeof(struct frag_hdr) : 0) +
rt->rt6i_nfheader_len;
if (ip6_sk_local_df(sk))
if (ip6_sk_ignore_df(sk))
maxnonfragsize = sizeof(struct ipv6hdr) + IPV6_MAXPLEN;
else
maxnonfragsize = mtu;
@ -1544,7 +1544,7 @@ int ip6_push_pending_frames(struct sock *sk)
}
/* Allow local fragmentation. */
skb->local_df = ip6_sk_local_df(sk);
skb->ignore_df = ip6_sk_ignore_df(sk);
*final_dst = fl6->daddr;
__skb_pull(skb, skb_network_header_len(skb));

2
net/ipv6/netfilter/nf_conntrack_reasm.c
Просмотреть файл

@ -451,7 +451,7 @@ nf_ct_frag6_reasm(struct frag_queue *fq, struct net_device *dev)
}
sub_frag_mem_limit(&fq->q, head->truesize);
head->local_df = 1;
head->ignore_df = 1;
head->next = NULL;
head->dev = dev;
head->tstamp = fq->q.stamp;

6
net/ipv6/xfrm6_output.c
Просмотреть файл

@ -78,7 +78,7 @@ static int xfrm6_tunnel_check_size(struct sk_buff *skb)
if (mtu < IPV6_MIN_MTU)
mtu = IPV6_MIN_MTU;
if (!skb->local_df && skb->len > mtu) {
if (!skb->ignore_df && skb->len > mtu) {
skb->dev = dst->dev;
if (xfrm6_local_dontfrag(skb))
@ -120,7 +120,7 @@ int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb)
#endif
skb->protocol = htons(ETH_P_IPV6);
skb->local_df = 1;
skb->ignore_df = 1;
return x->outer_mode->output2(x, skb);
}
@ -150,7 +150,7 @@ static int __xfrm6_output(struct sk_buff *skb)
if (skb->len > mtu && xfrm6_local_dontfrag(skb)) {
xfrm6_local_rxpmtu(skb, mtu);
return -EMSGSIZE;
} else if (!skb->local_df && skb->len > mtu && skb->sk) {
} else if (!skb->ignore_df && skb->len > mtu && skb->sk) {
xfrm_local_error(skb, mtu);
return -EMSGSIZE;
}

2
net/l2tp/l2tp_core.c
Просмотреть файл

@ -1073,7 +1073,7 @@ static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb,
}
/* Queue the packet to IP for output */
skb->local_df = 1;
skb->ignore_df = 1;
#if IS_ENABLED(CONFIG_IPV6)
if (tunnel->sock->sk_family == PF_INET6 && !tunnel->v4mapped)
error = inet6_csk_xmit(tunnel->sock, skb, NULL);

20
net/netfilter/ipvs/ip_vs_xmit.c
Просмотреть файл

@ -562,7 +562,7 @@ ip_vs_bypass_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
ip_send_check(iph);
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
skb->ignore_df = 1;
ip_vs_send_or_cont(NFPROTO_IPV4, skb, cp, 0);
rcu_read_unlock();
@ -590,7 +590,7 @@ ip_vs_bypass_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
goto tx_error;
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
skb->ignore_df = 1;
ip_vs_send_or_cont(NFPROTO_IPV6, skb, cp, 0);
rcu_read_unlock();
@ -684,7 +684,7 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
MTU problem. */
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
skb->ignore_df = 1;
rc = ip_vs_nat_send_or_cont(NFPROTO_IPV4, skb, cp, local);
rcu_read_unlock();
@ -774,7 +774,7 @@ ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
MTU problem. */
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
skb->ignore_df = 1;
rc = ip_vs_nat_send_or_cont(NFPROTO_IPV6, skb, cp, local);
rcu_read_unlock();
@ -886,7 +886,7 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
ip_select_ident(skb, &rt->dst, NULL);
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
skb->ignore_df = 1;
ret = ip_vs_tunnel_xmit_prepare(skb, cp);
if (ret == NF_ACCEPT)
@ -974,7 +974,7 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
iph->hop_limit = old_iph->hop_limit;
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
skb->ignore_df = 1;
ret = ip_vs_tunnel_xmit_prepare(skb, cp);
if (ret == NF_ACCEPT)
@ -1023,7 +1023,7 @@ ip_vs_dr_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
ip_send_check(ip_hdr(skb));
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
skb->ignore_df = 1;
ip_vs_send_or_cont(NFPROTO_IPV4, skb, cp, 0);
rcu_read_unlock();
@ -1060,7 +1060,7 @@ ip_vs_dr_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
}
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
skb->ignore_df = 1;
ip_vs_send_or_cont(NFPROTO_IPV6, skb, cp, 0);
rcu_read_unlock();
@ -1157,7 +1157,7 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
ip_vs_nat_icmp(skb, pp, cp, 0);
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
skb->ignore_df = 1;
rc = ip_vs_nat_send_or_cont(NFPROTO_IPV4, skb, cp, local);
rcu_read_unlock();
@ -1249,7 +1249,7 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
ip_vs_nat_icmp_v6(skb, pp, cp, 0);
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
skb->ignore_df = 1;
rc = ip_vs_nat_send_or_cont(NFPROTO_IPV6, skb, cp, local);
rcu_read_unlock();

2
net/openvswitch/vport-gre.c
Просмотреть файл

@ -172,7 +172,7 @@ static int gre_tnl_send(struct vport *vport, struct sk_buff *skb)
df = OVS_CB(skb)->tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ?
htons(IP_DF) : 0;
skb->local_df = 1;
skb->ignore_df = 1;
return iptunnel_xmit(skb->sk, rt, skb, fl.saddr,
OVS_CB(skb)->tun_key->ipv4_dst, IPPROTO_GRE,

2
net/openvswitch/vport-vxlan.c
Просмотреть файл

@ -170,7 +170,7 @@ static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
df = OVS_CB(skb)->tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ?
htons(IP_DF) : 0;
skb->local_df = 1;
skb->ignore_df = 1;
inet_get_local_port_range(net, &port_min, &port_max);
src_port = vxlan_src_port(port_min, port_max, skb);

2
net/sctp/ipv6.c
Просмотреть файл

@ -216,7 +216,7 @@ static int sctp_v6_xmit(struct sk_buff *skb, struct sctp_transport *transport)
IP6_ECN_flow_xmit(sk, fl6->flowlabel);
if (!(transport->param_flags & SPP_PMTUD_ENABLE))
skb->local_df = 1;
skb->ignore_df = 1;
SCTP_INC_STATS(sock_net(sk), SCTP_MIB_OUTSCTPPACKS);

2
net/sctp/output.c
Просмотреть файл

@ -591,7 +591,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
pr_debug("***sctp_transmit_packet*** skb->len:%d\n", nskb->len);
nskb->local_df = packet->ipfragok;
nskb->ignore_df = packet->ipfragok;
tp->af_specific->sctp_xmit(nskb, tp);
out: